CN116989948B - Leak protection gas detection device is used in fire control face guard production - Google Patents
Leak protection gas detection device is used in fire control face guard production Download PDFInfo
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- CN116989948B CN116989948B CN202311239743.XA CN202311239743A CN116989948B CN 116989948 B CN116989948 B CN 116989948B CN 202311239743 A CN202311239743 A CN 202311239743A CN 116989948 B CN116989948 B CN 116989948B
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 47
- 210000001097 facial muscle Anatomy 0.000 abstract description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 32
- 229910002092 carbon dioxide Inorganic materials 0.000 description 16
- 239000001569 carbon dioxide Substances 0.000 description 16
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 7
- 210000004373 mandible Anatomy 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 239000002341 toxic gas Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses an air leakage prevention detection device for fire mask production, in particular to the field of air leakage prevention detection, which comprises a host machine, wherein an elastic head die is arranged on the host machine and is used for being supported in the fire mask during detection; the simulation assembly comprises a main body part, a mandibular part and a driving part I, wherein the mandibular part is hinged to the lower side of the main body part, and the driving part I is used for driving the mandibular part to swing up and down. According to the invention, the mouth opening and closing condition of a person can be simulated through the vertical swing of the mandibular part, the stretching of facial muscles can be simulated, if air leakage occurs during detection, different gases can be mixed, whether the fire protection mask leaks or not can be judged by detecting the content of the test gas in the mixed gas, and the safety of firefighters and escape and trapped personnel is ensured under the condition of loudly shouting and without air leakage after loudly shouting by the fire protection mask which is qualified in detection.
Description
Technical Field
The invention relates to the technical field of air leakage prevention detection, in particular to an air leakage prevention detection device for fire mask production.
Background
The fire protection mask is equipment which is worn by firefighters and ensures respiratory safety in the case of fire or emergency, and a considerable part of families are equipped with the fire protection mask at present, so that the firefighters can wear the fire protection mask for escape in the case of fire.
The fire control face guard mainly comprises parts such as the cover body, eye window, filter element, half face guard and bandeau, when wearing, overlaps the cover body on the head, and the cover body is fixed with the elastic fabric in the position of neck contact, half face guard cover the mouth and nose position, and taut bandeau at last can, when breathing, filter element can filter out the toxic composition in the scene of a fire air, makes it turn into cleaner air relatively to supply to breathe the use.
Because the fire scene is filled with toxic gas, once the fire mask leaks gas, the toxic gas enters the mask and is inhaled by a person to poison, so that the fire mask needs to be detected in a gas leakage prevention mode during production of the fire mask. The prior art adopts a fire control mask air tightness tester, a test head die is arranged on the tester, during test, the fire control mask is sleeved on the head die, a fixing device is used for fixing the contact part of the mask and the neck, so that air leakage cannot occur at the contact part, then a vacuum pump is started to pump air from the mask, the pressure in the mask reaches-1000 pa-1000pa, the air pumping is stopped, and after the pressure is maintained for a period of time, the change value of the pressure in the mask is recorded. Judging whether the fire mask leaks according to the pressure change value.
When fire fighters rush into a fire scene to fight fire or escape, the gas pressure is increased due to the higher temperature of the fire scene, and high-temperature toxic gas can permeate into the cover body from the connecting part (elastic fabric) of the cover body and the neck. The firefighter always can shout for trapped people when fighting fire, the trapped people wearing the firefighter mask can also shout loudly, in the process of shout or calling for help, the mouth opening degree is large, the mandible is movable, the facial muscles are stretched, the distance between the front end of the mandible and the nose can be increased, slippage can be generated between the half mask and the nose, or slippage can be generated between the chin and the half mask, if the half mask is not tightly sealed, gaps can be generated at the nose part or the chin part, the gaps are not easy to eliminate after shouting loudly, so that toxic gas enters the half mask, and is inhaled by the person, thereby causing poisoning.
The head mould on the fire mask air tightness tester in the prior art is fixed, and after the half mask is attached to the position of the mouth and the nose, the half mask and the head mould keep a relatively static state, so that the air leakage prevention performance after megasonic shouting cannot be tested.
Disclosure of Invention
The invention provides an air leakage prevention detection device for fire mask production, which aims to solve the problems that: the head mould on the fire control face guard gas tightness tester is fixed, and after half face guard pastes in mouth and nose position department, half face guard just keeps relative static state with the head mould, makes unable test in the gas leakage prevention performance after the megaphone shouts.
In order to achieve the above purpose, the invention provides an air leakage prevention detection device for fire mask production, which comprises a main machine, wherein the main machine is provided with: the elastic head die is used for being supported in the fire mask during detection; the simulation assembly comprises a main body part, a lower jaw part and a first driving part, wherein the lower jaw part is hinged to the lower side of the main body part, the first driving part is used for driving the lower jaw part to swing up and down, and the main body part and the lower jaw part are fixedly connected with the inner surface of the head part of the elastic head die; the clamp is fixedly arranged on the host machine and used for clamping the neck sleeve of the fire-fighting mask at the neck part of the elastic head die; the air supply assembly comprises a first tank body, an air supply pump and a first communicating pipe, wherein the first tank body and the air supply pump are fixedly arranged in the main machine, an air outlet of the air supply pump is communicated with the interior of the first tank body, an air inlet of the air supply pump is communicated with an air supply device, the air supply device is used for supplying test air, an air inlet end of the first communicating pipe is communicated with the interior of the first tank body, and an air outlet end of the first communicating pipe penetrates into the interior of the elastic head die and penetrates out from the side face of the elastic head die; the detection assembly comprises a tank body II, a communicating pipe II and a gas detector, wherein the tank body II is fixedly arranged in the host, the detection end of the gas detector is positioned in the tank body II, the gas detector is used for detecting the content of test gas in the tank body II, the air inlet end of the communicating pipe II is communicated with the tank body II, and the air outlet end of the communicating pipe II penetrates into the elastic head die and penetrates out of the nose part of the elastic head die; during detection, the air supply assembly provides test air between the fire mask and the elastic head die, and the driving component I drives the mandibular component to swing up and down to simulate the opening and closing of the mouth of the person, wherein the test air and the air in the tank body II are different kinds of air.
In a preferred embodiment, the first tank body is provided with a first pressure sensor, a detection end of the first pressure sensor is located in the first tank body, the first pressure sensor is used for detecting the pressure in the first tank body, the second tank body is provided with a second pressure sensor, a detection end of the second pressure sensor is located in the second tank body, the second pressure sensor is used for detecting the pressure in the first tank body, the air leakage prevention detection device further comprises a control device, and the control device controls the air supply pump to supply air according to the detection pressure of the second pressure sensor, so that the air pressure in the first tank body is basically the same as the air pressure in the second tank body.
In a preferred embodiment, a fan is installed in the main machine, the air outlet end of the fan is communicated with the interior of the second tank body, and the fan sends air into the interior of the second tank body before the elastic head mould supports the fire protection mask.
In a preferred embodiment, a partition plate is vertically arranged in the second tank in a sliding manner, a first cylinder is arranged at the bottom of the second tank, the fixed end of the first cylinder is fixedly connected with the host, and the output end of the first cylinder is fixedly connected with the partition plate.
In a preferred embodiment, a main vacuum pump is fixedly arranged in the main machine, the suction end of the main vacuum pump is communicated with the interior of the first tank body, and the main vacuum pump is used for exhausting gas between the fire-fighting mask and the elastic head mould after the elastic head mould supports the fire-fighting mask and before detection.
In a preferred embodiment, the leak protection gas detection device still includes swing subassembly, and swing subassembly includes the support, and support fixed mounting is on the host computer, and the top of support is provided with the fly leaf, and the both sides of fly leaf upper end all are fixedly connected with keep the board, and the both sides of keep the board all are fixedly connected with side axle, and two side axles all with support transverse sliding connection, swing subassembly still includes drive part two, drive part two is used for driving the fly leaf transverse reciprocating motion.
In a preferred embodiment, the second driving part comprises a second motor, the second motor is fixedly connected with the support, the output end of the second motor is fixedly connected with a cam, one side of the cam is provided with a protruding portion, one side of the bottom of the movable plate is fixedly connected with a stop pin, springs are sleeved on the two side shafts, and two ends of each spring are respectively pressed with the holding plate and the support.
In a preferred embodiment, the fixture is provided with two, and two fixtures are located the both sides of elasticity head mould respectively, and the fixture includes the fixing base, fixing base and host computer fixed connection, rotate on the fixing base and be connected with the lead screw, and the one end fixed mounting of fixing base has motor one, and the output of motor one and the one end fixed connection of lead screw have the slip table on the fixing base, and the slip table passes through screw drive with the lead screw to be connected, and one side fixedly connected with splint of slip table.
In a preferred embodiment, the main body part is internally provided with a concave cavity, the micro vacuum pump is fixedly arranged in the concave cavity, the air outlet end of the micro vacuum pump is communicated with the third communicating pipe, and the air outlet end of the third communicating pipe is fixedly connected with the sucking disc.
In a preferred embodiment, an elastic rope is arranged in the concave cavity, one end of the elastic rope is fixedly connected with the inner side wall of the concave cavity, and the other end of the elastic rope is fixedly connected with the communicating pipe III.
The invention has the technical effects and advantages that: according to the invention, the mouth opening and closing condition of a person can be simulated through the vertical swing of the mandibular part, the stretching of facial muscles can be simulated, if air leakage occurs during detection, different gases can be mixed, whether the fire protection mask leaks or not can be judged by detecting the content of the test gas in the mixed gas, and the safety of firefighters and escape and trapped personnel is ensured under the condition of loudly shouting and without air leakage after loudly shouting by the fire protection mask which is qualified in detection.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a cross-sectional view of the overall structure of the present invention.
Fig. 3 is a cross-sectional view of the fire-fighting mask of the present invention as it is being sleeved over an elastic head mold.
FIG. 4 is a schematic diagram of a simulation module according to the present invention.
Fig. 5 is a schematic structural view of the swing assembly of the present invention.
Fig. 6 is a front view of the swing assembly of the present invention.
Fig. 7 is a schematic structural view of the clamp of the present invention.
Fig. 8 is a schematic view of a plugged filter element according to the present invention.
The reference numerals are: 1. a host; 2. an elastic head mold; 3. a simulation component; 31. a body member; 311. a cavity; 32. a mandibular part; 33. a first driving part; 34. a pin shaft; 4. a gas supply assembly; 41. a first tank body; 42. an air supply pump; 43. a first communicating pipe; 44. a first pressure sensor; 45. a main vacuum pump; 5. a detection assembly; 51. a second tank body; 52. a second communicating pipe; 53. a gas detector; 54. a second pressure sensor; 55. a blower; 56. a partition plate; 57. a first cylinder; 6. a clamp; 61. a fixing seat; 62. a screw rod; 63. a first motor; 64. a sliding table; 65. a clamping plate; 7. a micro vacuum pump; 71. a third communicating pipe; 72. a suction cup; 73. an elastic rope; 8. a swing assembly; 81. a bracket; 82. a movable plate; 821. a holding plate; 83. a side shaft; 84. a second driving part; 841. a cam; 8411. a protruding portion; 842. a stop pin; 843. a second motor; 844. a spring; 100. a fire mask; 101. a half mask; 102. a neck sleeve; 103. a filter element; 104. a fixing belt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8 of the specification, an air leakage prevention detection device for fire mask production comprises a main machine 1, wherein the main machine 1 is provided with: an elastic head mold 2, the elastic head mold 2 being for supporting inside the fire mask 100 at the time of detection; the simulation assembly 3, the simulation assembly 3 comprises a main body part 31, a lower jaw part 32 and a first driving part 33, the lower jaw part 32 is hinged to the lower side of the main body part 31, the first driving part 33 is used for driving the lower jaw part 32 to swing up and down, and the main body part 31 and the lower jaw part 32 are fixedly connected with the inner surface of the head of the elastic head die 2; the clamp 6 is fixedly arranged on the host 1, and the clamp 6 is used for clamping the neck 102 of the fire protection mask 100 at the neck of the elastic head die 2; the air supply assembly 4, the air supply assembly 4 includes a first tank 41, an air supply pump 42 and a first communicating pipe 43, the first tank 41 and the air supply pump 42 are fixedly installed in the main machine 1, an air outlet of the air supply pump 42 is communicated with the interior of the first tank 41, an air inlet of the air supply pump 42 is communicated with an air supply device, the air supply device is used for providing test air, an air inlet end of the first communicating pipe 43 is communicated with the interior of the first tank 41, and an air outlet end of the first communicating pipe 43 penetrates into the interior of the elastic head die 2 and penetrates out from the side surface of the elastic head die 2; the detection assembly 5 comprises a second tank body 51, a second communicating pipe 52 and a gas detector 53, wherein the second tank body 51 is fixedly arranged in the main machine 1, the detection end of the gas detector 53 is positioned in the second tank body 51, the gas detector 53 is used for detecting the content of test gas in the second tank body 51, the air inlet end of the second communicating pipe 52 is communicated with the interior of the second tank body 51, and the air outlet end of the second communicating pipe 52 penetrates into the interior of the elastic head die 2 and penetrates out of the nose of the elastic head die 2; during detection, the air supply assembly 4 supplies test air between the fire mask 100 and the elastic head die 2, and the first driving component 33 drives the lower jaw component 32 to swing up and down to simulate opening and closing of a human mouth, wherein the test air and air in the second tank body 51 are different types of air.
It should be noted that, the elastic head mold 2 is a model simulating a human head, and has a head and a neck, wherein the head may be made of elastic silica gel, the neck may be made of elastic silica gel, or may be made of plastic, preferably made of elastic silica gel, and the neck 102 of the fire-fighting mask 100 is more easily sealed and is not easily leaked when the clamp 6 clamps the neck. The clamp 6 may be a cylinder clamp, that is, two cylinders are used, and an arc clamping plate is installed at the output ends of the two cylinders, and the two arc clamping plates are driven by the cylinders to clamp the neck sleeve 102 at the neck of the elastic head die 2.
It should be noted that, the air supply device may be an air storage tank, the test gas may be carbon dioxide, the second tank 51 may be air, if the half mask 101 leaks, the carbon dioxide in the first tank 41 may be mixed with the air in the second tank 51, so that the content of the carbon dioxide in the second tank 51 is increased, and the gas detector 53 is a carbon dioxide detector and is fixedly installed on the second tank 51, and the content of the carbon dioxide is detected by the gas detector 53.
In the above scheme, the main body part 31 is hinged to the upper end of the mandible part 32 through the pin shaft 34, the first driving part 33 is in the form of an air cylinder, namely, the fixed end of the air cylinder is hinged to the main body part 31, the output end of the air cylinder is hinged to the mandible part 32, the mandible part 32 is driven to swing up and down through the expansion and contraction of the air cylinder, and in the process of the vertical swing of the mandible part 32, the main body part 31 and the mandible part 32 are fixedly connected with the inner surface of the head of the elastic head mold 2, so that the silica gel of the head can be driven to stretch and shrink, the stretching of facial muscles of a person can be simulated, and the actual situation can be more fit.
In a specific implementation scenario, when the anti-leakage detection is performed, firstly, the fire-fighting mask 100 is sleeved on the elastic head die 2, then the neck sleeve 102 is clamped at the neck of the elastic head die 2 through the clamp 6 to prevent air leakage, then the fixing belt 104 on the fire-fighting mask 100 is used to fix the fire-fighting mask 100 on the elastic head die 2, and secondly, the air supply pump 42 supplies test air between the fire-fighting mask 100 and the elastic head die 2 through the first tank 41 and the first communicating pipe 43 in sequence. During detection, the first driving part 33 drives the lower jaw part 32 to swing up and down, the lower jaw part is stopped after swinging for 2-3min, and if gaps are formed at the positions of the half face masks 101, carbon dioxide between the fire fighting face masks 100 and the elastic head mould 2 enters the inside of the half face masks 101 through the gaps, so that the gas content of the carbon dioxide in the second tank body 51 is increased. The amount of carbon dioxide in the second tank 51 is detected by the gas detector 53, and if the amount of carbon dioxide is significantly increased, it is indicated that the air leakage is generated. In this way, the fire mask 100 is safe for firefighters and escape and trapped personnel without leakage during and after megasonic shouting.
Referring to fig. 1-2 of the specification, a first pressure sensor 44 is installed on a first tank 41, a detection end of the first pressure sensor 44 is located in the first tank 41, the first pressure sensor 44 is used for detecting pressure in the first tank 41, a second pressure sensor 54 is installed on a second tank 51, a detection end of the second pressure sensor 54 is located in the second tank 51, the second pressure sensor 54 is used for detecting pressure in the first tank 41, and the anti-leakage detection device further comprises a control device, and the control device controls the air supply pump 42 to supply air according to the detection pressure of the second pressure sensor 54, so that the air pressure in the first tank 41 and the air pressure in the second tank 51 are basically the same.
It should be noted that, during the detection process, if the gas pressure inside the half mask 101 (i.e. inside the second tank 51) is greater than the gas pressure between the elastic head mold 2 and the fire protection mask 100 (i.e. inside the first tank 41), the half mask 101 will have a tendency to be outwardly opened and separate from the face of the elastic head mold 2, and if the gas pressure inside the half mask 101 is less than the gas pressure between the elastic head mold 2 and the half mask 101, the face compression force between the half mask 101 and the elastic head mold 2 will be increased; the former would make the half mask 101 more prone to leakage and the latter would make the half mask 101 less prone to leakage, both of which are in line with the actual situation, and therefore it is necessary to ensure that the gas pressure inside the half mask 101 and between the elastic head mold 2 and the half mask 101 is substantially equal.
In the above-mentioned scheme, the control device is a control main board, the pressure sensor two 54 detects the gas pressure inside the tank body two 51 (which is basically equal to the atmospheric pressure), then the control main board controls the gas supply pump 42 to supply gas, the pressure sensor one 44 detects the gas pressure inside the tank body one 41, and when the gas pressure inside the tank body one 41 just exceeds the gas pressure inside the tank body two 51, the gas supply pump 42 stops supplying gas, and at this time, the gas pressures inside the tank body one 41 and the tank body two 51 are basically equal.
Further, a fan 55 is installed in the main machine 1, an air outlet end of the fan 55 is communicated with the interior of the second tank 51, and before the elastic head mould 2 supports the fire protection mask 100, the fan 55 sends air into the interior of the second tank 51.
The fan 55 is communicated with the interior of the second tank 51 through a valve, and before the detection, air is sent into the interior of the second tank 51 through the fan 55, so as to discharge carbon dioxide possibly leaking into the interior of the second tank 51 in the previous detection process.
Further, a partition plate 56 is vertically arranged in the second tank body 51 in a sliding manner, a first air cylinder 57 is arranged at the bottom of the second tank body 51, the fixed end of the first air cylinder 57 is fixedly connected with the host 1, and the output end of the first air cylinder 57 is fixedly connected with the partition plate 56.
It should be noted that, when the mandibular part 32 opens for the last time, or after the mandibular part 32 opens for the last time and closes again, the first cylinder 57 may drive the partition 56 to move downward, so that the gas pressure inside the second tank 51 is smaller than the gas pressure inside the first tank 41, and if a leakage occurs, then the carbon dioxide inside the first tank 41 will quickly enter the second tank 51, so that the carbon dioxide content inside the second tank 51 will quickly rise, and the detection result of the gas detector 53 will be more accurate.
It should be noted that, when the mandibular part 32 is opened last time, or after the mandibular part 32 is opened last time and closed again, if leakage occurs, the inner and outer pressures of the half mask 101 are equal, so the half mask 101 will not be adsorbed on the face position of the elastic head mold 2, even if the half mask 101 is adsorbed on the face position, the detection result will not be affected, and if no leakage occurs, the carbon dioxide content in the tank body two 51 will not rise, so that the qualified product and the unqualified product can still be detected.
Further, a main vacuum pump 45 is fixedly installed in the main machine 1, the air suction end of the main vacuum pump 45 is communicated with the interior of the first tank 41, and the main vacuum pump 45 is used for discharging air between the fire-fighting mask 100 and the elastic head mould 2 after the elastic head mould 2 supports the fire-fighting mask 100 and before detection.
It should be noted that, the air supply pump 42 and the main vacuum pump 45 are both communicated with the first tank 41 through the valve, before the air supply pump 42 supplies carbon dioxide into the first tank 41, air between the elastic head mold 2 and the fire-fighting mask 100 can be pumped out through the main vacuum pump 45, and the pressure between the elastic head mold 2 and the fire-fighting mask 100 is reduced, and the purpose is that after the air supply pump 42 supplies carbon dioxide, the air content between the elastic head mold 2 and the fire-fighting mask 100 is less, so the concentration of carbon dioxide is higher, and the detection result is more accurate.
Referring to fig. 1-6 of the specification, the air leakage prevention detection device further comprises a swinging assembly 8, the swinging assembly 8 comprises a bracket 81, the bracket 81 is fixedly installed on the host 1, a movable plate 82 is arranged above the bracket 81, two sides of the upper end of the movable plate 82 are fixedly connected with a retaining plate 821, two sides of the retaining plate 821 are fixedly connected with side shafts 83, the two side shafts 83 are transversely and slidably connected with the bracket 81, the swinging assembly 8 further comprises a second driving part 84, and the second driving part 84 is used for driving the movable plate 82 to transversely reciprocate.
Further, the second driving part 84 includes a second motor 843, the second motor 843 is fixedly connected with the bracket 81, the output end of the second motor 843 is fixedly connected with a cam 841, one side of the cam 841 is provided with a protrusion 8411, one side of the bottom of the movable plate 82 is fixedly connected with a stop pin 842, two side shafts 83 are respectively sleeved with a spring 844, and two ends of the spring 844 are respectively pressed with the holding plate 821 and the bracket 81.
Since the filter element 103 is filled with the filler for filtering, it is relatively heavy and is shaken when a person runs, and therefore, it is necessary to detect the air leakage preventing performance of the fire mask 100 at this time, that is, the swing assembly 8 is used. When the fire mask 100 is fitted over the elastic head mold 2, the filter element 103 is positioned between the two holding plates 821, but the bottom of the filter element 103 is not in contact with the upper surface of the movable plate 82, preventing the test when the mandibular part 32 is opened and closed from being affected by the blocking of the upper surface of the movable plate 82. The cam 841 is driven to rotate by the second motor 843, the cam 841 can push the blocking pin 842 to enable the movable plate 82 and the side shaft 83 to slide back and forth on the support 81, the section of the side shaft 83 is elliptical, the protruding portion 8411 is located on the right side, the blocking pin 842 is located on the left side as shown in fig. 5, then the cam 841 only needs to rotate once, and the movable plate 82 can move back and forth and gradually attenuate under the action of the spring 844. In this way, the air leakage preventing performance of the filter element 103 upon shaking can be detected. This detection can be performed by detecting the opening and closing of the mandibular part 32.
Referring to fig. 1-7 of the specification, two clamps 6 are provided, the two clamps 6 are respectively located at two sides of the elastic head die 2, each clamp 6 comprises a fixing seat 61, the fixing seat 61 is fixedly connected with the host 1, a screw rod 62 is rotatably connected to the fixing seat 61, one end of the fixing seat 61 is fixedly provided with a motor one 63, the output end of the motor one 63 is fixedly connected with one end of the screw rod 62, a sliding table 64 is slidably mounted on the fixing seat 61, the sliding table 64 is connected with the screw rod 62 through threaded transmission, and one side of the sliding table 64 is fixedly connected with a clamping plate 65.
When the neck sleeve 102 is clamped at the neck position of the elastic head mold 2, the first motor 63 drives the screw rod 62 to rotate, and the screw rod 62 drives the sliding table 64 and the clamping plate 65 to move, so that the clamping plates 65 of the two clamps 6 clamp together.
Referring to fig. 1-8 of the specification, a cavity 311 is formed in the main body part 31, a micro vacuum pump 7 is fixedly installed in the cavity 311, the air outlet end of the micro vacuum pump 7 is communicated with a third communicating pipe 71, and the air outlet end of the third communicating pipe 71 is fixedly connected with a sucker 72.
Further, an elastic rope 73 is arranged in the concave cavity 311, one end of the elastic rope 73 is fixedly connected with the inner side wall of the concave cavity 311, and the other end of the elastic rope 73 is fixedly connected with the communicating pipe III 71.
In the detection, the filter element 103 needs to be plugged to prevent the gas from entering and exiting from the filter element 103, and a plug of the fire protection mask 100 may be used, or a suction cup 72 may be used, that is, a vacuum pump 7 may be used to pump negative pressure to the position of the suction cup 72, so that the suction cup 72 is adsorbed on one end of the filter element 103 close to the half mask 101. By the arrangement of the elastic string 73, when the communicating tube three 71 is pulled out, the elastic string 73 is elongated, and when the suction cup 72 is released, the elastic string 73 pulls the communicating tube three 71 into the cavity 311.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides a fire control face guard production is with leak protection gas detection device which characterized in that, includes host computer (1), be provided with on host computer (1):
an elastic head mold (2), wherein the elastic head mold (2) is used for being supported inside the fire protection mask (100) during detection;
the simulation assembly (3), the simulation assembly (3) comprises a main body part (31), a mandibular part (32) and a driving part I (33), the mandibular part (32) is hinged to the lower side of the main body part (31), the driving part I (33) is used for driving the mandibular part (32) to swing up and down, and the main body part (31) and the mandibular part (32) are fixedly connected with the inner surface of the head of the elastic head die (2);
the clamp (6) is fixedly arranged on the host machine (1), and the clamp (6) is used for clamping the neck sleeve (102) of the fire-fighting mask (100) at the neck of the elastic head die (2);
the air supply assembly (4), the air supply assembly (4) comprises a first tank body (41), an air supply pump (42) and a first communicating pipe (43), the first tank body (41) and the air supply pump (42) are fixedly arranged in the main machine (1), an air outlet of the air supply pump (42) is communicated with the inside of the first tank body (41), an air inlet of the air supply pump (42) is communicated with an air supply device, the air supply device is used for providing test air, an air inlet end of the first communicating pipe (43) is communicated with the inside of the first tank body (41), and an air outlet end of the first communicating pipe (43) penetrates into the inside of the elastic head die (2) and penetrates out from the side surface of the elastic head die (2);
the detection assembly (5), the detection assembly (5) comprises a tank body II (51), a communicating pipe II (52) and a gas detector (53), the tank body II (51) is fixedly arranged in the main machine (1), a detection end of the gas detector (53) is positioned in the tank body II (51), the gas detector (53) is used for detecting the content of test gas in the tank body II (51), an air inlet end of the communicating pipe II (52) is communicated with the tank body II (51), and an air outlet end of the communicating pipe II (52) penetrates into the elastic head die (2) and penetrates out of the nose of the elastic head die (2);
during detection, the air supply assembly (4) supplies test air between the fire mask (100) and the elastic head die (2), and the first driving component (33) drives the lower jaw component (32) to swing up and down to simulate opening and closing of a mouth of a person, wherein the test air and air in the second tank body (51) are different types of air.
2. The leak detection device for fire mask production according to claim 1, wherein: the gas leakage prevention detection device comprises a tank body I (41), a pressure sensor I (44) is arranged on the tank body I (41), a detection end of the pressure sensor I (44) is located in the tank body I (41), the pressure sensor I (44) is used for detecting the pressure in the tank body I (41), a pressure sensor II (54) is arranged on a tank body II (51), a detection end of the pressure sensor II (54) is located in the tank body II (51), the pressure sensor II (54) is used for detecting the pressure in the tank body I (41), and the gas leakage prevention detection device further comprises a control device, and the control device controls the gas supply pump (42) to supply gas according to the detection pressure of the pressure sensor II (54) so that the gas pressure in the tank body I (41) is basically the same as the gas pressure in the tank body II (51).
3. The leak detection device for fire mask production according to claim 2, wherein: the inside of host computer (1) is installed fan (55), the air-out end of fan (55) communicates with the inside of jar body two (51), before elasticity head mould (2) support fire control face guard (100), air is sent into to the inside of jar body two (51) to fan (55).
4. The leak detection device for fire mask production according to claim 1, wherein: the novel oil tank is characterized in that a partition plate (56) is vertically arranged in the tank body II (51) in a sliding mode, a first air cylinder (57) is arranged at the bottom of the tank body II (51), the fixed end of the first air cylinder (57) is fixedly connected with the host machine (1), and the output end of the first air cylinder (57) is fixedly connected with the partition plate (56).
5. The leak detection device for fire mask production according to claim 1, wherein: the inside fixed mounting of host computer (1) has main vacuum pump (45), main vacuum pump (45) inhale the inside intercommunication of end and jar body one (41), after elasticity head mould (2) support fire control face guard (100) and before detecting, main vacuum pump (45) are used for discharging the gas between fire control face guard (100) and elasticity head mould (2).
6. The leak detection device for fire mask production according to claim 1, wherein: leak protection gas detection device still includes swing subassembly (8), swing subassembly (8) include support (81), support (81) fixed mounting is on host computer (1), the top of support (81) is provided with fly leaf (82), the equal fixedly connected with of both sides of fly leaf (82) upper end keeps board (821), the equal fixedly connected with side axle (83) of both sides of keeping board (821), two side axle (83) all with support (81) transverse sliding connection, swing subassembly (8) still include drive part two (84), drive part two (84) are used for driving fly leaf (82) transverse reciprocating motion.
7. The leak detection device for fire mask production of claim 6, wherein: the second driving part (84) comprises a second motor (843), the second motor (843) is fixedly connected with the support (81), the output end of the second motor (843) is fixedly connected with a cam (841), one side of the cam (841) is provided with a protruding portion (8411), one side of the bottom of the movable plate (82) is fixedly connected with a stop pin (842), two side shafts (83) are respectively sleeved with a spring (844), and two ends of the spring (844) are respectively pressed with the retaining plate (821) and the support (81).
8. The leak detection device for fire mask production according to claim 1, wherein: the fixture comprises two fixtures (6), wherein the two fixtures (6) are respectively located on two sides of an elastic head die (2), each fixture (6) comprises a fixing seat (61), each fixing seat (61) is fixedly connected with a screw rod (62) in a rotating mode, one end of each fixing seat (61) is fixedly provided with a motor I (63), the output end of each motor I (63) is fixedly connected with one end of each screw rod (62), a sliding table (64) is slidably installed on each fixing seat (61), each sliding table (64) is connected with each screw rod (62) through a threaded transmission mode, and one side of each sliding table (64) is fixedly connected with a clamping plate (65).
9. The leak detection device for fire mask production according to claim 1, wherein: the novel vacuum pump is characterized in that a concave cavity (311) is formed in the main body part (31), a micro vacuum pump (7) is fixedly installed in the concave cavity (311), a third communicating pipe (71) is communicated with the air outlet end of the micro vacuum pump (7), and a sucker (72) is fixedly connected with the air outlet end of the third communicating pipe (71).
10. The leak detection device for fire mask production of claim 9, wherein: an elastic rope (73) is arranged in the concave cavity (311), one end of the elastic rope (73) is fixedly connected with the inner side wall of the concave cavity (311), and the other end of the elastic rope (73) is fixedly connected with a communication pipe III (71).
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| CN202311239743.XA CN116989948B (en) | 2023-09-25 | 2023-09-25 | Leak protection gas detection device is used in fire control face guard production |
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| CN117419945B (en) * | 2023-12-19 | 2024-03-12 | 四川烈火胜服科技有限公司 | Closed circulation type respirator performance detection device |
| CN119104233A (en) * | 2024-10-09 | 2024-12-10 | 江苏国健检测技术有限公司 | Gas mask air tightness detection device |
| CN119714729B (en) * | 2025-02-26 | 2025-09-05 | 朝阳市加华电子有限公司 | An anti-leakage detection device for fire mask production |
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| CN102944371A (en) * | 2012-11-06 | 2013-02-27 | 北京航空航天大学 | Detection system for noninvasive ventilation interface |
| CN104048800A (en) * | 2014-06-12 | 2014-09-17 | 湖北华强科技有限责任公司 | Protective mask air tightness detecting device |
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| US8196454B2 (en) * | 2009-12-11 | 2012-06-12 | Hamilton Associates, Inc. | Portable multi-function system for testing protective devices |
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| CN102944371A (en) * | 2012-11-06 | 2013-02-27 | 北京航空航天大学 | Detection system for noninvasive ventilation interface |
| CN104048800A (en) * | 2014-06-12 | 2014-09-17 | 湖北华强科技有限责任公司 | Protective mask air tightness detecting device |
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