CN112780533B - Compression chamber type fluid conveying system - Google Patents
Compression chamber type fluid conveying system Download PDFInfo
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- CN112780533B CN112780533B CN202110192006.3A CN202110192006A CN112780533B CN 112780533 B CN112780533 B CN 112780533B CN 202110192006 A CN202110192006 A CN 202110192006A CN 112780533 B CN112780533 B CN 112780533B
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- compression
- contrast agent
- crankshaft
- saline solution
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- 230000006835 compression Effects 0.000 title claims abstract description 93
- 238000007906 compression Methods 0.000 title claims abstract description 93
- 239000012530 fluid Substances 0.000 title claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 72
- 239000002872 contrast media Substances 0.000 claims abstract description 60
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 50
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 17
- 230000001360 synchronised effect Effects 0.000 claims description 24
- 239000012528 membrane Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 13
- 239000007924 injection Substances 0.000 abstract description 13
- 230000007547 defect Effects 0.000 abstract description 6
- 230000002572 peristaltic effect Effects 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000003325 tomography Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002591 computed tomography Methods 0.000 description 4
- 229940039231 contrast media Drugs 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention belongs to the technical field of computer X-ray tomography, and relates to a compression cavity type fluid conveying system, which comprises a compression cavity type hose system, a linear motion assembly and a driving assembly, wherein the compression cavity type hose system comprises a hose pipe, a linear motion assembly and a driving assembly; the compression cavity type hose system comprises a liquid taking system and a compression system; the liquid taking system comprises a contrast agent liquid taking device and a saline solution liquid taking device; the compression system comprises a shared liquid pipe, a flow sensor, a compression pipeline, a compressor, a pulse controller, a pressure measurement chamber and an output joint; the linear motion assembly is used for periodically compressing the compressor; the driving assembly is used for providing power for the linear motion assembly. The invention can solve the defects of complicated operation process and insufficient utilization of liquid medicine of the traditional syringe type injector and the problems of limited injection pressure and unstable fluid injection rate of a peristaltic pump hose system.
Description
Technical Field
The invention belongs to the technical field of Computed Tomography (CT), relates to an injector for injecting contrast medium and saline solution to a patient, and particularly relates to a compression cavity type fluid conveying system.
Background
In many medical diagnostic and therapeutic procedures, a physician or other person injects a contrast media into a patient to assist the physician's diagnosis in conjunction with Computed Tomography (CT) imaging. The contrast agent arrives at the detection site through the vein because the X-ray can penetrate the normal tissue organs of the human body but is impermeable to the contrast agent, so that an image of the desired tissue site can be obtained by displaying an image of the contrast agent under the X-ray, and the obtained image can be displayed on a monitor and recorded.
In the existing market, most injectors comprise an automatic driving syringe, some injectors only have one syringe, and some injectors comprise two syringes, one for contrast media and the other for saline solution, but the syringe type injectors cannot continuously perform multiple injections from one contrast media container, namely, when the contrast media or saline solution in the syringe is insufficient, the injector needs to stop to perform the drug sucking operation. Therefore, the operation flow thereof must include: the medicine suction, the air exhaust and the injection are carried out simultaneously, the operation can be carried out sequentially only according to fixed steps, the flow is solidified, and the fixed and unreduceable time of an operator is required. And when the contrast agent or the saline solution in any one injection tube exists in the injection tube for more than a certain time, the contrast agent or the saline solution is considered to be unusable and must be replaced, so that the contrast agent or the saline solution is wasted to different degrees, and the full utilization of the contrast agent or the saline solution is not facilitated.
The problem can be solved by adopting a syringe form for providing pipeline fluid power in a hose pump form, the core part of the existing hose pump structure form is a peristaltic pump, and the peristaltic pump has the following defects: (1) because the peristaltic pump pipe uses the hose, the peristaltic pump pipe has limited bearing pressure, cannot reach the high output pressure of the traditional injection pipe, has limited application scenes, and cannot be applied to the condition of high injection pressure; (2) because the pump generates a pulse flow when operating, the fluid pressure cannot be kept constant in the pipeline system, namely, the pulse pressure exists, and the flow rate of the contrast medium or saline solution entering the patient is unstable, so that the final imaging effect is influenced.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a compression cavity type fluid conveying system which can solve the defects that the operation process of the traditional syringe type injector is complicated and the liquid medicine cannot be fully utilized, and can also solve the problems of limited injection pressure and unstable fluid injection rate of a peristaltic pump type hose system.
In order to solve the defects of the prior art, the technical scheme provided by the invention is as follows:
the invention provides a compression cavity type fluid conveying system which comprises a compression cavity type hose system, a linear motion assembly and a driving assembly, wherein the compression cavity type hose system comprises a hose pipe and a hose pipe;
the compression cavity type hose system comprises a liquid taking system and a compression system;
the liquid taking system comprises a contrast agent liquid taking device and a saline solution liquid taking device; at least two sets of contrast agent liquid taking devices are arranged; the contrast agent liquid taking device comprises a contrast agent sharp needle head, a contrast agent conduit, and a bubble sensor and a shut-off valve which are arranged on the contrast agent conduit, wherein the inlet end of the contrast agent conduit is connected with the contrast agent sharp needle head; the saline solution liquid taking device comprises a saline solution sharp needle head, a saline solution conduit, and an air bubble sensor and a shut-off valve which are arranged on the saline solution conduit, wherein the inlet end of the saline solution conduit is connected with the saline solution sharp needle head;
the compression system comprises a shared liquid pipe, a flow sensor, a compression pipeline, a compressor, a pulse controller, a pressure measuring chamber and an output joint; the inlet end of the common liquid pipe is connected with the outlet ends of the contrast agent conduit and the saline solution conduit, and the outlet end of the common liquid pipe is connected with the inlet end of the compression pipeline; the flow sensor is positioned on the common liquid pipe; at least two sets of compression pipelines are arranged; the compressors are positioned on the compression pipeline, and at least one compressor is in a compression state; the outlet end of the compression pipeline is connected with the pulse controller, the pressure measuring chamber and the output connector through a liquid outlet pipeline;
the linear motion assembly is used for periodically compressing the compressor;
the driving assembly is connected with the linear motion assembly and used for providing power for the linear motion assembly.
Preferably, the compressor is a corrugated compressor or a spherical compressor;
the outer wall of the compressor is resilient.
Preferably, the inlet end and the outlet end of the compressor are both provided with one-way valves;
the inlet end of the compressor is positioned below the compressor, and the outlet end of the compressor is positioned above the compressor;
and limiting bosses are arranged at the inlet end and the outlet end of the compressor.
Preferably, the pulse suppressor comprises a receiving area, a first elastic membrane and a sealing area; the receiving area is communicated with the liquid outlet pipeline; the elastic membrane is used for separating the receiving area and the sealing area; the sealing region is filled with a compressible material.
Preferably, the pressure measuring chamber comprises a pressure measuring tube and a first protrusion and a second protrusion arranged on the pressure measuring tube; the pressure measuring pipe is connected with the liquid outlet pipeline; the first bulge and the second bulge are communicated with the pressure measuring pipe; a second elastic membrane is arranged at the outer end of the first bulge; and a third elastic membrane is arranged at the outer end of the second bulge.
Preferably, the driving assembly comprises a driving motor, a small synchronous pulley, a synchronous belt, a large synchronous pulley, a crankshaft, a connecting rod, a connecting piece and a crankshaft bearing seat;
the driving motor drives the synchronous belt to rotate through the small synchronous belt pulley; the synchronous belt drives the large synchronous belt pulley to rotate; the large synchronous belt wheel is fixedly connected with the crankshaft through a pin key and drives the crankshaft to perform circular rotation motion; the crankshaft drives the big end of the connecting rod to do circular motion around the central axis of the crankshaft; the small end of the connecting rod is fixedly connected with the connecting piece through a pin shaft; the connecting piece is fixedly connected with the linear motion assembly; the crankshaft bearing seats are connected with two ends of the crankshaft.
Preferably, the crankshaft comprises a driving wheel mounting shaft, two driven wheel mounting shafts and two bearing seat mounting shafts; the driven wheel mounting shaft is fixed at two ends of the driving wheel mounting shaft, is parallel to the driving wheel mounting shaft and is symmetrically distributed at two sides of the driving wheel mounting shaft; the bearing seat mounting shaft is fixed at the outer end of the driven wheel mounting shaft, and the central axis of the bearing seat mounting shaft is collinear with the central axis of the driving wheel mounting shaft; the driving wheel mounting shaft is used for mounting a large synchronous belt pulley, the driven wheel mounting shaft is used for mounting a large head end of a connecting rod, and the bearing seat mounting shaft is used for mounting a crankshaft bearing seat.
Preferably, the connecting piece is U-shaped, two parallel side edges of the connecting piece are connected with the small end of the connecting rod through a pin shaft, and the top end of the connecting piece is fixedly connected with the linear motion assembly through a screw.
Preferably, the linear motion assembly comprises a support plate, a first linear bearing seat, a first linear guide rod, a movable compression plate and a fixed plate; the first linear bearing seat is fixed on the supporting plate, and the linear guide rod is movably connected with the first linear bearing seat; the movable compression plate is fixedly connected with the linear guide rod; the movable compression plate and the fixed plate are respectively connected with the inlet end and the outlet end of the compressor.
Preferably, the fixing plate is provided with a first clamping groove; the movable compression plate is provided with a second clamping groove; the first clamping groove and the second clamping groove are both arc-shaped; the first clamping groove and the second clamping groove are respectively connected with the inlet end and the outlet end of the compressor.
The invention has the beneficial effects that:
1) The compressor is arranged, so that high-pressure fluid can be continuously provided;
2) The pulse suppressor is arranged, so that the pulse of the flowing fluid can be suppressed, and the stability of the fluid injection rate is ensured;
3) The invention is provided with a plurality of contrast agent liquid taking devices simultaneously, and the bubble sensor and the stop valve are arranged on the contrast agent liquid taking devices, so that empty contrast agent liquid taking devices can be detected in time, pipelines can be switched through the stop valve, and the defects that the traditional injection tube type injector is complicated in operation process and liquid medicine cannot be fully utilized are overcome.
Drawings
FIG. 1 is a schematic external view of a fluid delivery system having a compression chamber according to the present invention;
FIG. 2 is a block diagram of a compression chamber hose system provided by the present invention;
FIG. 3 is a block diagram of a drive assembly provided by the present invention;
FIG. 4 is a block diagram of a linear motion assembly provided by the present invention;
FIG. 5 is a schematic view of a crankshaft;
FIG. 6 (a) is a schematic view of the attachment of the connector to the first linear guide;
FIG. 6 (b) is a schematic structural diagram of the connecting member and the first linear guide rod;
FIG. 7 (a) is a schematic structural view of the big end of the connecting rod located at 9 o' clock direction of the crankshaft bearing seat;
FIG. 7 (b) is a schematic view of the big end of the connecting rod located at the 6 o' clock direction of the crankshaft bearing seat;
FIG. 7 (c) is a schematic structural diagram of the big end of the connecting rod located at the 3 o' clock direction of the crankshaft bearing seat;
FIG. 7 (d) is a schematic view of the big end of the connecting rod at 12 o' clock of the crankshaft bearing seat;
FIG. 8 (a) is an external view of the pulse suppressor;
FIG. 8 (b) is an external view of the pulse suppressor;
FIG. 8 (c) is a cross-sectional view of the pulse suppressor at high line pressures;
FIG. 8 (d) is a cross-sectional view of the pulse suppressor at low line pressure;
FIG. 9 (a) is an external view of the corrugated compressor in a pressure-released state;
FIG. 9 (b) is a cross-sectional view of the corrugated compressor in a pressure-relieved condition;
FIG. 9 (c) is an external view of the corrugated compressor in a fully compressed state;
FIG. 9 (d) is a cross-sectional view of the corrugated compressor in a fully compressed state;
FIG. 10 (a) is an external view of a spherical compressor in a pressure-released state;
FIG. 10 (b) is a cross-sectional view of the spherical compressor in a pressure-relieved condition;
FIG. 10 (c) is an external view of the spherical compressor in a compressed state;
FIG. 11 (a) is an external view of a pressure measuring chamber;
FIG. 11 (b) is a cross-sectional view of the pressure measurement chamber when not subjected to fluid pressure;
FIG. 11 (c) is a cross-sectional view of the pressure measurement chamber when subjected to fluid pressure;
FIG. 12 (a) is a sectional view with the shutoff valve open;
FIG. 12 (b) is a sectional view when the shut-off valve is closed;
wherein, 1 is a compression cavity type hose system; 2 is a linear motion component; 3 is a driving component; 101 is a saline solution sharp needle; 102 is a saline solution catheter; 104. 118 is a contrast agent conduit; 105. 107 is a check valve; 103. 119 is a contrast agent sharp needle head; 109 is an output connector; 110 is a pressure measurement chamber; 111 is a pulse controller; 123. 124, 125, 126 are ultrasonic bubble sensors; 117 is a common liquid pipe; 127 is an ultrasonic flow sensor; 106. 116 is a compression line; 31 is a crankshaft; 311. 312 is driven wheel mounting shaft; 313. 315 is a bearing seat mounting shaft; 314 is a driving wheel mounting shaft; 32 is a connecting rod; 33 is a connecting piece; 34 is a crankshaft bearing seat; 331 is a screw; 332 is a pin shaft; 35 is a large synchronous belt wheel; 36 is a synchronous belt; 37 is a small synchronous pulley; 38 is a driving motor; 21 is a first linear guide rod; 22 is a second linear guide; 23 is a second linear bearing seat; 24 is a fixing plate; 241 is a first clamping groove; 25 is a first linear bearing seat; 26 is a support plate; 27 is a movable compression plate; 271 is a second clamping groove; 108. 114 is a corrugated compressor; 1141. 1082 is a side wall of the corrugated compressor; 1084 is the inlet end of the corrugated compressor; 1087 is the outlet end of the corrugated compressor; 1088 is a fixed ring; 1081. 1083, 116, 112 are limit bosses; 1085. 1042 is the inner cavity of the corrugated compressor; 11. 12 is a spherical compressor; 111 is the outlet end of the spherical compressor; 113 is the side wall of the spherical compressor; 114 is the inner cavity of the spherical compressor; 115 is the inlet end of a spherical compressor; 1112. 1113 is a receiving area; 1111. 1115 is a first elastomeric membrane; 1110. 1114 is a sealing area; 1101 is a second elastic membrane; 1102 is a third elastic membrane; 1103 is a first bump; 1104 is a second bump; 1105 is a pressure measuring tube; 120. 121, 122 are stop valves; 1201 is a valve body; 1202 is a valve core; 1203 is a head end; 1204 is a depression; 1205 is an installation space.
Detailed Description
The present invention will be further described with reference to the following embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and the protection scope of the present invention is not limited thereby.
An embodiment of the present invention provides a compression chamber type fluid delivery system, see fig. 1, comprising a compression chamber type hose system 1, a linear motion assembly 2 and a driving assembly 3.
In use, the compression chamber fluid delivery system provided by the invention is provided with a support device for fixing the compression chamber hose system, the linear motion assembly and the drive assembly. The form of the supporting device is designed according to the actual use requirement.
The compression cavity type hose system comprises a liquid taking system and a compression system; the liquid taking system comprises a contrast agent liquid taking device and a saline solution liquid taking device; at least two sets of contrast agent liquid taking devices are provided; the contrast agent liquid taking device comprises a contrast agent sharp needle head, a contrast agent conduit, and a bubble sensor and a shut-off valve which are arranged on the contrast agent conduit, wherein the inlet end of the contrast agent conduit is connected with the contrast agent sharp needle head; the saline solution liquid taking device comprises a saline solution sharp needle, a saline solution conduit, and an air bubble sensor and a shut-off valve which are arranged on the saline solution conduit, wherein the inlet end of the saline solution conduit is connected with the saline solution sharp needle. During the injection operation, when the liquid in any one of the contrast agent container or the saline solution container is used up, the bubble sensor of the pipeline in which the contrast agent container or the saline solution container is located can detect the existence of the gas, know which specific container is used up, and switch the pipeline by closing the valve. During in-service use, can select for use detachable mode to fix strutting arrangement with sharp syringe needle of contrast agent, contrast agent pipe, saline solution point syringe needle, saline solution pipe, bubble sensor and shut-off valve etc. as required.
The compression system comprises a shared liquid pipe, a flow sensor, a compression pipeline, a compressor, a liquid outlet pipeline, a pulse controller, a pressure measurement chamber and an output joint; the inlet end of the common liquid pipe is connected with the outlet ends of the contrast agent conduit and the saline solution conduit, and the outlet end is connected with the inlet end of the compression pipeline; the flow sensor is positioned on the common liquid pipe; at least two sets of compression pipelines are arranged; the compressors are positioned on the compression pipeline, and at least one compressor is in a compression state; the outlet end of the compression pipeline is connected with the pulse controller, the pressure measuring chamber and the output connector through the liquid outlet pipeline. The compressor is a container having an outer wall with resilient compressibility and resiliency, and having at least one inlet end and at least one outlet end. A flow sensor is used to monitor the flow of fluid from the common fluid line. Because the structural motion mode of the compressor determines that the fluid output mode of a single compressor can only be periodic and pulse fluid, in order to ensure that the pipeline part of the fluid flowing through the compressor is continuous and the pressure is kept stable, at least two sets of compression pipelines are provided, and at least one compressor is in a compression state at the same time, the fluid in the subsequent pipeline can be ensured to be continuous high-pressure fluid. Meanwhile, the invention is provided with the pulse suppressor, so that the pulse of the flowing fluid can be suppressed, and the fluid with stable, continuous and stable pressure can be obtained. During the in-service use, can select for use detachable mode with sharing liquid pipe, flow sensor, compression pipeline, compressor, pulse controller, pressure measurement room and output joint etc. and fix to strutting arrangement as required.
In an alternative embodiment of the invention, the flow sensor is an ultrasonic flow sensor.
In an alternative embodiment of the invention, the bubble sensor is an ultrasonic bubble sensor.
In an optional embodiment of the invention, a bubble sensor is further arranged on the liquid outlet pipeline and used for monitoring whether gas is generated in the compression link or not. The bubble sensor is an ultrasonic bubble sensor.
In an alternative embodiment of the present invention, the contrast medium conduit, the saline solution conduit, the common liquid conduit, the compression conduit and the effluent conduit are flexible conduits.
In an optional embodiment of the invention, the shut-off valve adopts a stop valve which shuts off the fluid in the hose in a non-contact manner, so that the pollution to the contrast agent and the saline solution is avoided.
In an alternative embodiment of the invention, referring to fig. 2, a compression chamber hose system comprises a fluid extraction system and a compression system; the liquid taking system comprises a contrast agent liquid taking device and a saline solution liquid taking device; two sets of contrast agent liquid taking devices are provided; the inlet end of the contrast agent conduit 104 is connected with a contrast agent sharp needle head 103, and an ultrasonic bubble sensor 125 and a stop valve 121 are sequentially arranged behind the contrast agent sharp needle head 103; the inlet end of the contrast conduit 118 is connected to a contrast tip needle 119, and the contrast tip needle 119 is followed by an ultrasonic bubble sensor 124 and a shut-off valve 120. The inlet end of the saline solution conduit 102 is connected with the saline solution sharp needle 101, and an ultrasonic bubble sensor 123 and a stop valve 122 are arranged behind the saline solution sharp needle 101 in sequence.
In an alternative embodiment of the present invention, referring to fig. 2, the compression system comprises a common liquid pipe 117, an ultrasonic flow sensor 127 disposed on the common liquid pipe 117, two sets of compression lines 106 and 116, compressors 108 and 114 disposed on the compression lines, an outlet line, an ultrasonic bubble sensor 126 disposed on the outlet line, a pulse controller 111, a pressure measurement chamber 110, and an output connector 109. The inlet end of the common liquid tube 117 is connected to the outlet ends of the contrast agent conduits 104 and 118 and the saline solution conduit 102, and the outlet ends are connected to the inlet ends of the compression lines 106 and 116 by a tee 112; the outlet ends of the compression pipelines 106 and 116 are connected with the inlet end of the liquid outlet pipeline through a tee joint, and the liquid outlet pipeline is sequentially provided with an ultrasonic bubble sensor 126, a pulse controller 111, a pressure measuring chamber 110 and an output connector 109.
The driving assembly is connected with the compressor through the linear motion assembly and used for providing power for the linear motion assembly.
The linear motion assembly is a connection conversion unit, can convert the circular motion of the driving assembly into reciprocating linear motion and is used for periodically compressing the compressor; the compression cavity type hose system is driven to carry out fluid conveying in a reciprocating linear motion mode.
Specifically, referring to fig. 3, 6 (a) and 6 (b), the driving assembly 3 includes a driving motor 38, a small timing pulley 37, a timing belt 36, a large timing pulley 35, a crankshaft 31, a connecting rod 32, a connecting member 33 and a crankshaft bearing seat 34; the driving motor 38 drives the synchronous belt 36 to rotate through the small synchronous belt wheel 37; the synchronous belt 36 drives the large synchronous belt wheel 35 to rotate; the large synchronous belt wheel 35 is fixedly connected with the crankshaft 31 through a pin key and drives the crankshaft 31 to perform circular rotation motion; when the crankshaft 31 performs circular rotation motion, the big end of the connecting rod 32 is driven to perform circular motion around the central axis of the crankshaft 31; the small end of the connecting rod 32 is fixedly connected with the connecting piece 33 through a pin 332; the connecting piece 33 is fixedly connected with the linear motion assembly; both ends of the crankshaft 31 are connected to crankshaft bearing blocks 34; the crankshaft bearing block 34 is fixedly connected to the support device.
Specifically, referring to fig. 3 and 5, the crankshaft includes a drive wheel mounting shaft 314, two driven wheel mounting shafts 311, 312, and two bearing block mounting shafts 313, 315. Driven wheel installation axle 311 and driven wheel installation axle 312 are fixed in the both ends of action wheel installation axle 314, are parallel with action wheel installation axle 314, and the symmetric distribution is in the both sides of action wheel installation axle 314. The mounting shafts 313 and 315 are fixed to the outer ends of the driven wheel mounting shaft 312 and the driven wheel mounting shaft 315, respectively, with the central axes of the mounting shafts 313 and 315 being collinear with the central axis of the driving wheel mounting shaft 314. The driving pulley mounting shaft 314 is used for mounting the large synchronous pulley 35, the driven pulley mounting shafts 311, 312 are used for mounting the large head end of the connecting rod 32, and the bearing seat mounting shafts 313, 315 are used for mounting the crankshaft bearing seat 34.
Specifically, referring to fig. 4, the linear motion assembly includes a support plate 26, a first linear bearing housing 25, a first linear guide 21, a movable compression plate 27, and a fixing plate 24. The supporting plate 26 is fixedly arranged on the supporting device; the first linear bearing seat 25 is fixed on the support plate 26, and the first linear guide rod 21 is movably connected with the first linear bearing seat 25; can do up-and-down reciprocating motion in the linear direction; the movable compression plate 27 is fixedly connected with the linear guide rod 21; the movable compression plate 27 and the fixed plate 24 are connected to the inlet and outlet ends of the compressor, respectively. The fixing plate is fixed on the supporting device.
Referring to fig. 3, 6 (a) and 6 (b), the connecting member 33 is U-shaped, two parallel sides of which are connected to the small end of the connecting rod 32 by a pin 332, the top end of which is provided with a threaded hole, and the top end of which is fixedly connected to the first linear guide rod 21 by a screw 331.
Referring to fig. 7 (a), 7 (b), 7 (c) and 7 (d), when the crankshaft 31 rotates, the large end of the connecting rod 32 is driven to make a circular motion, the small end of the connecting rod 32 can rotate around the pin 332, the small end of the connecting rod 32 is connected with the first linear guide rod 21, and the first linear guide rod 21 makes a linear motion in the vertical direction. When the first linear guide rod makes up-and-down reciprocating linear motion, the movable compression plate is driven to do up-and-down reciprocating linear motion, and meanwhile, the movable compression plate drives the compressor to do reciprocating compression and release. Since the driven wheel mounting shaft 311 and the driven wheel mounting shaft 312 of the crankshaft 31 are symmetrically distributed about the central axis of the crankshaft 31, when the crankshaft 31 rotates, one of the two compressors is in a compressed state and the other compressor is in a released state.
In an alternative embodiment of the invention, see fig. 4, a movable compression plate 27 is fixed to the top end of the linear guide 21.
In an alternative embodiment of the present invention, referring to fig. 4, the fixing plate 24 is provided with a first clamping groove 241, the movable compression plate 27 is provided with a second clamping groove 271, the first clamping groove 241 and the second clamping groove 271 are both arc-shaped, and the first clamping groove 241 and the second clamping groove 271 are used for fixing the compressor.
In an alternative embodiment of the present invention, referring to fig. 4, the linear motion assembly further includes two second linear guide rods 22 and two second linear bearing blocks 23, the second linear bearing blocks 23 are fixed at both sides of the compression plate 27, the second linear guide rods 22 are movably connected with the second linear bearing blocks 23, and the second linear guide rods are fixedly connected with the supporting device. The first linear guide rod 21 drives the movable compression plate 27 to move up and down, the movable compression plate 27 moves up and down along the second linear guide rod 22, and the second linear guide rod 22 and the second linear bearing seat 23 are used for ensuring that the movable compression plate 27 moves up and down along the vertical direction.
In an alternative embodiment of the invention, both the inlet and outlet ends of the compressor are provided with one-way valves. The check valve can be connected to the compressor in a threaded connection mode, can also be connected in a welding mode, and can also be placed in the compressor in an internal preset mode.
In an alternative embodiment of the invention, the inlet end of the compressor is below the compressor and the outlet end is above the compressor. Since the gas is always in the uppermost position in its interior cavity, the inlet end is below the compressor to allow the complete removal of any gas that may be present in its interior. Before use, the air in the compressor may be discharged into a compression line and finally to the atmosphere through an output fitting.
In an alternative embodiment of the invention, the two ends of the compressor are provided with limit bosses. The limiting boss is used for effectively fixing the two ends of the compressor on the movable compression plate and the fixed plate in the linear motion assembly, so that the compressor can execute a fully and completely compression work and pressure release process by each reciprocating linear motion of the movable compression plate, and the reduction of fluid conveying efficiency caused by untimely elastic recovery after the pressure of the compressor is released is avoided.
In an alternative embodiment of the invention, the compressor is a corrugated compressor.
In an alternative embodiment of the present invention, referring to fig. 9 (a) and 9 (b), the corrugated compressor 108 has an inlet end 1084 and an outlet end 1087, with a resilient sidewall 1082 in the form of a bellows, and a retaining ring 1088 is provided at the inlet end 1084, a retaining ring 1088 is provided between the corrugated compressor 108 and the retaining ring 1083, a retaining ring 1081 is provided at the outlet end 1087, and a retaining ring 1088 is provided between the corrugated compressor 108 and the retaining ring 1081. The two fixing rings are respectively and fixedly connected with the first clamping groove and the second clamping groove. Referring to fig. 2 and 9 (b), when the movable compression plate drives the limit boss 1081 to move vertically downward, the check valve 107 installed at the inlet end 1084 can prevent the fluid from flowing out of the inlet end 1084, so as to ensure that the fluid can only flow out of the outlet end 1087, and when the movable compression plate drives the limit boss 1081 to move upward, the check valve 105 installed at the outlet end 1087 can prevent the fluid from flowing into the corrugated compressor 108 from the fluid outlet, so as to ensure that the fluid can only flow in from the inlet end 1084 and flow out of the outlet end 1087, so as to ensure the uniqueness of the flowing direction of the fluid inside the corrugated compressor 108. Referring to fig. 9 (b), when the corrugated compressor 108 is fully depressurized, the corrugated compressor 108 is in a state of highest height at this time. The volume of the chamber 1085 of the bellows compressor 108 in this state is the largest, and it is assumed that the value of the chamber volume is V1. Referring to fig. 9 (c) and 9 (d), when the corrugated compressor 114 is in a fully compressed state, the corrugated compressor 114 is in a state of a lowest height, and the volume inside thereof becomes minimum due to the pressing of the outer wall. Fig. 9 (d) is a cross-sectional view of the corrugated compressor 114 in a compressed state, in which the side wall 1141 is in a compressed state, and the volume of the cavity 1142 is at a minimum state, and assuming that the volume of the cavity 1142 is V2, the difference between V1 and V2 is the volume of fluid that can be output by a single compression of the corrugated compressor 114.
In another embodiment of the invention, the compressor is a spherical compressor. Referring to fig. 10 (a), the spherical compressor 11 has a circular or elliptical elastic outer wall. Referring to fig. 10 (b), the spherical compressor 11 has an inlet end 115 and an outlet end 111, an inner cavity 114 with a variable volume and an elastic sidewall 113, a limit boss 116 provided at the inlet end 115, and a limit boss 112 provided at the outlet end 111. Referring to fig. 10 (a) and 10 (b), when the pressure of the spherical compressor is completely released, it is assumed that the internal cavity volume of the spherical compressor 11 in this state is V3. Referring to fig. 10 (c), when the spherical compressor 12 is in the fully compressed state, and the volume inside the cavity of the spherical compressor 12 is set to V4, the difference between V3 and V4 is the volume of the fluid extruded by a single compression of the spherical compressor.
Fig. 8 (a) and 8 (b) are external views of a pulse suppressor used in the present invention. The pulse suppressor comprises a receiving area, a first elastic membrane and a sealing area; the receiving area is communicated with the liquid outlet pipeline; the elastic membrane is used for separating the receiving area and the sealing area; the sealing region is filled with a compressible material, such as a gas. Specifically, referring to fig. 8 (c), when a high-pressure fluid enters the receiving area 1113 of the pulse suppressor, the first elastic diaphragm 1115 is pushed to elastically deform upwards, and a compressible gas is stored in the sealing area 1114, so that the sealing area 1114 is in a compressed state, stores pressure potential energy, and stores a part of the high-pressure fluid in the bulged area of the first elastic diaphragm 1115, thereby achieving the purpose of balancing the pressure in the pipeline. Referring to fig. 8 (d), when the liquid pressure in the channel is lower than the average value, the originally compressed region 1114 of the pulse suppressor is changed to the relaxed state 1110, and the pressure potential energy is released, so that the liquid stored in the receiving region 1112 is discharged into the channel by the first elastic diaphragm 1111, which supplements the liquid pressure in the liquid outlet channel to balance the liquid outlet channel pressure in the low pressure state.
Fig. 11 (a) is an external view of the pressure measurement chamber. Specifically, referring to fig. 11 (a), 11 (b) and 11 (c), the pressure measurement chamber 110 includes a pressure measurement pipe 1105 and first and second protrusions 1103 and 1104 provided on the pressure measurement pipe; the pressure measuring pipe 1105 is connected with the liquid outlet pipeline; the first and second protrusions 1103 and 1104 communicate with the pressure measurement tube 1105; a second elastic membrane 1101 is arranged at the outer end of the first protrusion 1103; the outer end of the second protrusion 1104 is provided with a third elastic membrane 1102. Second and third elastomeric diaphragms 1101, 1102 are elastomeric metal diaphragms that elastically deform when subjected to fluid pressure and return to their original shape when the fluid pressure is removed. When the pressure measurement chamber is subjected to fluid pressure, as shown in fig. 11 (c), the second elastic diaphragm 1101 and the third elastic diaphragm 1102 are deformed, and the deformation amounts of the second elastic diaphragm 1101 and the third elastic diaphragm 1102 can be accurately captured under the detection of the displacement sensor, so that the data of the deformation amounts of the second elastic diaphragm 1101 and the third elastic diaphragm 1102 can be converted into the value of the fluid pressure in the pressure measurement chamber 110. If there is a difference in the amount of deformation of the second elastic diaphragm 1101 and the third elastic diaphragm 1102, the detected pressure difference value thereof may be corrected to obtain an accurate pressure value.
Fig. 12 (a) is a cross-sectional view of the shut-off valves (120, 121, and 122) in an open position, wherein the valve body 1201 has a mounting space 1205 for the contrast conduits 104 and 118 and the saline conduit 102, the mounting space having a recess 1204 shaped similarly to the head end 1203 of the valve spool 1202, and the shut-off valves 120, 121, and 122 are in an open state, the distance between the valve spool 1202 and the recess 1204 allowing fluid in the contrast conduits 104 and 118 and the saline conduit 102 to pass through. Fig. 12 (b) is a sectional view of shut valves 120, 121, and 122 in the closed position. At this time, the valve core 1202 moves downward, and the space between the head end and the recess 1204 is reduced until the contrast medium conduits 104 and 118 and the saline solution conduit 102 are completely pressed, so as to close the contrast medium conduits 104 and 118 and the saline solution conduit 102.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (6)
1. A compression chamber type fluid conveying system is characterized by comprising a compression chamber type hose system, a linear motion assembly and a driving assembly;
the compression cavity type hose system comprises a liquid taking system and a compression system;
the liquid taking system comprises a contrast agent liquid taking device and a saline solution liquid taking device; at least two sets of contrast agent liquid taking devices are arranged; the contrast agent liquid taking device comprises a contrast agent sharp needle head, a contrast agent conduit, and a bubble sensor and a shut-off valve which are arranged on the contrast agent conduit, wherein the inlet end of the contrast agent conduit is connected with the contrast agent sharp needle head; the saline solution liquid taking device comprises a saline solution sharp needle head, a saline solution conduit, and an air bubble sensor and a shut-off valve which are arranged on the saline solution conduit, wherein the inlet end of the saline solution conduit is connected with the saline solution sharp needle head;
the compression system comprises a shared liquid pipe, a flow sensor, a compression pipeline, a compressor, a pulse suppressor, a pressure measuring chamber and an output joint; the inlet end of the common liquid pipe is connected with the outlet ends of the contrast agent conduit and the saline solution conduit, and the outlet end of the common liquid pipe is connected with the inlet end of the compression pipeline; the flow sensor is positioned on the common liquid pipe; at least two sets of compression pipelines are arranged; the compressors are positioned on the compression pipeline, and at least one compressor is in a compression state; the outlet end of the compression pipeline is connected with the pulse suppressor, the pressure measuring chamber and the output connector through a liquid outlet pipeline;
the compressor is a corrugated compressor or a spherical compressor; the outer wall of the compressor has elasticity; the inlet end and the outlet end of the compressor are both provided with one-way valves; the inlet end of the compressor is positioned below the compressor, and the outlet end of the compressor is positioned above the compressor; the inlet end and the outlet end of the compressor are provided with limit bosses;
the linear motion assembly is used for periodically compressing the compressor; the linear motion assembly comprises a support plate, a first linear bearing seat, a first linear guide rod, a movable compression plate and a fixing plate; the first linear bearing seat is fixed on the supporting plate, and the linear guide rod is movably connected with the first linear bearing seat; the movable compression plate is fixedly connected with the linear guide rod; the fixing plate is provided with a first clamping groove; the movable compression plate is provided with a second clamping groove; the first clamping groove and the second clamping groove are both arc-shaped; the first clamping groove and the second clamping groove are respectively connected with the inlet end and the outlet end of the compressor;
the driving assembly is connected with the linear motion assembly and used for providing power for the linear motion assembly.
2. The system of claim 1, wherein said pulse dampener comprises a receiving area, a first resilient diaphragm, and a sealing area; the receiving area is communicated with the liquid outlet pipeline; the elastic membrane is used for separating the receiving area and the sealing area; the sealing region is filled with a compressible material.
3. The fluid delivery system of claim 1, wherein the pressure measurement chamber comprises a pressure measurement tube and first and second protrusions disposed on the pressure measurement tube; the pressure measuring tube is connected with the liquid outlet pipeline; the first bulge and the second bulge are communicated with the pressure measuring pipe; a second elastic diaphragm is arranged at the outer end of the first bulge; and a third elastic membrane is arranged at the outer end of the second bulge.
4. The system of claim 1, wherein said drive assembly comprises a drive motor, a small timing pulley, a timing belt, a large timing pulley, a crankshaft, a connecting rod, a connecting member, and a crankshaft bearing mount;
the driving motor drives the synchronous belt to rotate through the small synchronous belt pulley; the synchronous belt drives the large synchronous belt pulley to rotate; the large synchronous belt wheel is fixedly connected with the crankshaft through a pin key and drives the crankshaft to perform circular rotation motion; the crankshaft drives the big end of the connecting rod to do circular motion around the central axis of the crankshaft; the small end of the connecting rod is fixedly connected with the connecting piece through a pin shaft; the connecting piece is fixedly connected with the linear motion assembly; the crankshaft bearing seat is connected with two ends of the crankshaft.
5. The compression pocket fluid delivery system of claim 4, wherein said crankshaft comprises a drive wheel mounting shaft, two driven wheel mounting shafts and two bearing seat mounting shafts; the driven wheel mounting shaft is fixed at two ends of the driving wheel mounting shaft, is parallel to the driving wheel mounting shaft and is symmetrically distributed at two sides of the driving wheel mounting shaft; the bearing seat mounting shaft is fixed at the outer end of the driven wheel mounting shaft, and the central axis of the bearing seat mounting shaft is collinear with the central axis of the driving wheel mounting shaft; the driving wheel mounting shaft is used for mounting a large synchronous belt pulley, the driven wheel mounting shaft is used for mounting a large head end of a connecting rod, and the bearing seat mounting shaft is used for mounting a crankshaft bearing seat.
6. The system of claim 4, wherein said connecting member is U-shaped, and has two parallel sides connected to the small end of said connecting rod by a pin, and a top end fixedly connected to the linear motion assembly by a screw.
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| CN202110192006.3A CN112780533B (en) | 2021-02-20 | 2021-02-20 | Compression chamber type fluid conveying system |
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| CN202110192006.3A CN112780533B (en) | 2021-02-20 | 2021-02-20 | Compression chamber type fluid conveying system |
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| CN112780533B true CN112780533B (en) | 2023-02-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865585A (en) * | 2006-06-23 | 2006-11-22 | 华南理工大学 | Non-contact pulp flow pulse reducer for high-speed paper machine approach flow system |
| CN101337106A (en) * | 2007-07-02 | 2009-01-07 | 欧利奇股份有限公司 | Syringe, squeeze valve and pressure measurement interface hose system |
| CN105031773A (en) * | 2015-08-27 | 2015-11-11 | 南京润泽流体控制设备有限公司 | Double-head continuous sample feeding device |
| CN110860008A (en) * | 2019-11-04 | 2020-03-06 | 珠海英智科技有限公司 | Infusion system and method |
| CN111420156A (en) * | 2020-03-18 | 2020-07-17 | 深圳圣诺医疗设备股份有限公司 | automatic injection device |
-
2021
- 2021-02-20 CN CN202110192006.3A patent/CN112780533B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865585A (en) * | 2006-06-23 | 2006-11-22 | 华南理工大学 | Non-contact pulp flow pulse reducer for high-speed paper machine approach flow system |
| CN101337106A (en) * | 2007-07-02 | 2009-01-07 | 欧利奇股份有限公司 | Syringe, squeeze valve and pressure measurement interface hose system |
| CN102698335A (en) * | 2007-07-02 | 2012-10-03 | 欧利奇股份有限公司 | Hose system for an injector, squeeze valve and pressure measuring interface |
| CN105031773A (en) * | 2015-08-27 | 2015-11-11 | 南京润泽流体控制设备有限公司 | Double-head continuous sample feeding device |
| CN110860008A (en) * | 2019-11-04 | 2020-03-06 | 珠海英智科技有限公司 | Infusion system and method |
| CN111420156A (en) * | 2020-03-18 | 2020-07-17 | 深圳圣诺医疗设备股份有限公司 | automatic injection device |
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