CN222469322U

CN222469322U - River dredging screening device

Info

Publication number: CN222469322U
Application number: CN202323449211.7U
Authority: CN
Inventors: 黄炳昆; 赖卓志; 林捷深; 黄宋义
Original assignee: Guangdong Machinery Research Institute Co ltd
Current assignee: Guangdong Machinery Research Institute Co ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2025-02-14
Anticipated expiration: 2033-12-15

Abstract

The utility model relates to a river channel silt clearing and screening device, comprising a feed hopper, a discharge port of the feed hopper being in a horizontal structure, a first flushing unit being arranged on one side of the feed hopper, and a flushing port of the first flushing unit facing the discharge port. The utility model can solve the problem that the silt has high viscosity and contains large stones, and some mud lumps cannot be separated during the screening process.

Description

River dredging screening device

Technical Field

The utility model relates to the technical field of screening devices, in particular to a river dredging screening device.

Background

River dredging generally refers to river treatment, and belongs to hydraulic engineering. The silt deposited on the river bottom is salvaged to the shore through mechanical equipment, so that the river dredging effect is achieved. The salvaged sludge is usually dehydrated and then used for reinforcing the river levee.

When dredging river channel, the silt needs to be screened by a screening device. In engineering, vibrating screens are often used as screening devices. When the device is used, a worker pours water with mud to be cleaned into the vibrating screen through the feeding hopper by the hooking machine, and the mud is separated from sand, stone, garbage and other impurities by the screen of the vibrating screen, so that a screening effect is realized on the mud. However, when the conventional vibrating screen is used, part of mud clusters cannot be separated due to the fact that the viscosity of river mud is high and larger stones are contained, and the condition that the large stones block a feeding hopper exists, so that screening efficiency and screening effect are affected.

Disclosure of utility model

In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a river dredging and screening device, which can solve the problems that the sludge has higher viscosity and contains larger stones and partial mud clusters cannot be separated in the screening process.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a river dredging screening device which comprises a feeding hopper, wherein a discharge hole of the feeding hopper is of a horizontal structure, one side of the feeding hopper is provided with a first flushing unit, and a flushing hole of the first flushing unit faces to the discharge hole.

The preferable technical scheme of the utility model is that the feed inlet of the feed hopper is in a frustum shape.

The preferable technical scheme of the utility model is that the first flushing unit is a flushing water pipe, and the flushing water pipe is arranged at the bevel edge of the frustum in the feed inlet.

The preferable technical scheme of the utility model is that the flushing water pipes are symmetrically arranged, and the number of the flushing water pipes is two.

The preferable technical scheme of the utility model is that a first screen is arranged at the feed inlet of the feed hopper, at least one side of the first screen is provided with a second flushing unit, and the flushing port of the second flushing unit faces the first screen.

The utility model has the preferable technical scheme that one side of the first screen is provided with a pushing unit, one end of the first screen is hinged with the feeding port, and the acting end of the pushing unit acts on the other end of the first screen opposite to the hinged part.

The pushing unit is a hydraulic oil rod, and the acting end of the hydraulic oil rod is fixedly connected with the first screen opposite to the other end of the hinge part.

The utility model is characterized in that the utility model also comprises a stone guide rail, and an inlet of the stone guide rail is arranged at the hinge part of the first screen.

The utility model adopts the preferable technical scheme that a protective fence is arranged on the stone guide rail.

The preferable technical scheme of the utility model is that the second flushing unit is a high-pressure flushing water cannon, the number of which is four and which is rectangular in distribution.

The utility model has the beneficial effects that:

The utility model provides a river dredging screening device, which aims to efficiently separate mud with high viscosity, wherein a discharge hole of a feed hopper of the device is of a horizontal structure, a high-pressure first flushing unit is arranged at the discharge hole, and flushing high-pressure water flow is impacted to small stones and mud clusters adhered with mud at the discharge hole, so that the mud and the small stones are primarily flushed before entering a next vibration module, the problems that mud clusters cannot be separated due to the fact that the mud sticks to the stones and the mud is high in viscosity are greatly reduced, and the mud and the stones are better separated. The arrangement of the flushing port towards the outlet also ensures that the sludge and stones are smoothly sent to the outlet in the flushing process, and avoids the problems of blockage and sedimentation in the flushing process. The utility model has simple and compact structural design and small occupied space, is suitable for reconstruction according to the existing device structure, and has wide application scene.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a perspective view of a river dredging screening device according to the first embodiment;

FIG. 2 is a left side view of a river dredging screening device according to the first embodiment;

Fig. 3 is an enlarged view of a portion a in fig. 1.

In the figure:

1-first screen mesh, 2-hinge part, 3-feed hopper, 31-discharge port, 32-feed port, 4-feed hopper bracket, 5-screen box, 6-high pressure water pipe, 7-first screen mesh, 8-second screen mesh, 9-pushing unit, 10-damping spring, 11-first flushing unit, 12-second flushing unit, 13-water cannon bracket, 14-stone guide rail, 15-guard rail and 16-vibrator.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intervening medium, or may be in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1-3, the connection between the lines and the pipelines is omitted in the drawings, and the river dredging screening device provided in this embodiment is divided into a feeding module and a vibrating module, the two modules are sequentially connected, the feeding module comprises a feeding hopper bracket 4, a feeding hopper 3 and a first flushing unit 11, and the feeding hopper 3 is welded at the top of the feeding hopper bracket 4. The feed inlet 32 of feeder hopper 3 is the frustum, and upper wide and lower narrow, and the bottom of feeder hopper 3 is cuboid structure, and its discharge gate 31 department is horizontal structure, and the washing mouth of first washing unit is towards discharge gate 31. For the bottom of the feeder hopper 3 of traditional screening plant is the swash plate structure, and in order to separate the high-efficient separation of viscidity great silt in this embodiment, the discharge gate department of the feeder hopper 3 of the device is horizontal structure, and be provided with the first washing unit 11 of high pressure in discharge gate department, strike the stone and the mud ball that the adhesion of discharge gate department had the silt with the high-pressure rivers that wash for silt and stone just received preliminary washing before getting into next vibration module, alleviateed stone adhesion silt and silt viscidity higher lead to the unable separation of mud ball's problem greatly, help separating silt and stone and separation mud ball better. The arrangement of the flushing port towards the outlet also ensures that the sludge and stones are smoothly sent to the outlet in the flushing process, and avoids the problems of blockage and sedimentation in the flushing process. The frustum-shaped feeding port is designed to help improve the fluidity of materials, so that sludge and stones can enter the feeding hopper 3 more easily and smoothly. Compared with feed inlets in other shapes, the frustum-shaped design can reduce the resistance of materials and reduce the viscosity of fluid, so that the materials can more smoothly enter the dredging device, and the subsequent screening process is facilitated.

Specifically, the first flushing unit 11 is a flushing water pipe, and is disposed at the inclined edge of the frustum in the feed port, and in order to prevent the hard object from damaging the water pipe, the water pipe is made of a metal material and welded at the inclined edge. The form occupation space of water pipe is little, sets up the frustum hypotenuse department in the feed inlet with the wash pipe, can make full use of slope structure. The design of slope helps the smooth and easy flow of rivers, makes the rivers that wash cover whole feed inlet better, ensures that the washing effect is even, reduces and washes the dead angle to improve the cleaning efficiency of desilting device. Further, by arranging two flushing pipes symmetrically, a more uniform flushing effect can be achieved. Two flushing water pipes are respectively positioned at two sides of the feed inlet, so that the flushing water flow can form symmetrical impact force in the feed inlet, the silt and the stone are uniformly cleaned in the flushing process, and the flushing efficiency of the screening device is improved.

Preferably, a pre-screening module is also included before the feeding module, in particular comprising a first screen 1 for screening large stones, a second flushing unit 12 (the second flushing unit 12 in this embodiment is a high-pressure flushing water cannon), a cannon stand 13. The top of the feed hopper 3 is provided with a first screen 1 with the inner width of 500 mm, four high-pressure flushing water cannons are arranged around the first screen 1 and distributed in a rectangular shape, and flushing ports of the high-pressure flushing water cannons face the first screen 1. The pre-screening module can isolate stone blocks with the diameter being larger than 500 mm, and the high-pressure flushing water cannons around can flush silt attached to the stone blocks and perform primary flushing on larger silt blocks. The setting of first screen cloth 1 can carry out preliminary separation before the material gets into the dredging device in feed inlet department, blocks materials such as large granule's stone to alleviate the burden of dredging device follow-up screening part. This helps to improve overall dredging efficiency and reduces impact and loss on screening equipment. By the arrangement of the first screen 1, the possibility that large particle materials enter subsequent equipment can be reduced, and the maintenance frequency of the equipment is reduced. This helps to extend the service life of the apparatus, reduces maintenance costs and downtime, and improves the reliability of the dredging device.

Further, a pushing unit 9 is arranged on one side of the first screen 1, one end of the first screen 1 is hinged with the feed inlet, and the acting end of the pushing unit 9 acts on the other end of the first screen 1 opposite to the hinged portion 2. When the stones on the first screen 1 are blocked, the acting end of the pushing unit 9 pushes the first screen 1 to dump the large stones isolated on the first screen 1 to the ground. The provision of the pushing unit 9 helps to prevent excessive accumulation of larger volumes of impurities on the first screen 1 during screening, reduces the risk of clogging and reduces the risk and cost of manual cleaning of the screens. The design can keep the permeability of the first screen cloth 1, and improves the stability and the reliability of the dredging device. Preferably, the pushing unit 9 is a hydraulic oil rod, and the acting end of the hydraulic oil rod is fixedly connected with the other end of the first screen 1 opposite to the hinge part. The hydraulic oil lever active end is fixedly connected to the other end of the first screen 1 opposite to the hinge, and this structural design ensures the reliability and stability of the pushing unit 9. The hydraulic system provides stable driving force, reduces the influence of vibration and impact on equipment, and prolongs the service life of the dredging device. In addition, the hydraulic oil lever can provide a large pushing force, which contributes to more effective cleaning of sludge and foreign matters on the first screen 1. This helps to increase the cleaning efficiency of the dredging device, making it more efficient.

Preferably, it further comprises a stone guide 14, the entrance of the stone guide 14 being provided in the hinge of the first screen 1. The design of the stone guides 14 ensures that the first screen 1 is pushed to guide the poured stones orderly towards the collection zone of the ground. This helps concentrating the stone into appointed region, and convenient follow-up processing and clearance have improved the whole efficiency of river channel dredging operation. Further, a guard rail 15 is provided on the block guide 14. The arrangement of the guard rail 15 can effectively promote the safety of the stone guide 14. By arranging the guard rail 15 on the guide rail, stones can be prevented from being separated from the guide rail in the sliding or moving process, the accidental risk is reduced, and the safety of operators and surrounding environment is protected.

The vibration plate comprises a screen box 5, a high-pressure water pipe 6, a first-stage screen 7, a second-stage screen 8, a vibrator 16 and a vibration damping spring 10. The vibration plate adopts a cylindrical eccentric shaft vibration exciter and a deflection block to adjust the amplitude, and the vibrator 16 is arranged on the side plate of the screen box 5 and is driven by a motor to rotate through a triangle belt to generate centrifugal inertia force so as to force the screen box 5 to vibrate. The side plate of the screen box 5 is made of high-quality steel plates, and the side plate is connected with the cross beam and the vibration exciter base through high-strength bolts or ring slot rivets. The motor makes the eccentric block of the vibration exciter rotate at high speed through the triangular belt. The running eccentric blocks generate great centrifugal force to excite the screen box 5 to generate circular motion with certain amplitude, and the material on the screen is subjected to impulse transmitted by the screen box 5 on the inclined screen surface to generate continuous throwing motion, so that the particles smaller than the screen holes are thoroughly screened in the process of meeting the material and the screen surface, thereby realizing classification. The top of the screen box 5 is transversely provided with a screen box high-pressure water pipe 6, the bottom of the screen box high-pressure water pipe 6 is fixedly connected with a plurality of spray heads which are arranged in an array, the spray heads point to a first-stage screen 7, and mud balls with higher viscosity are dispersed by using high-pressure water. The aperture of the first-stage screen 7 is 10 mm, is used for sieving small stones, garbage and the like. The secondary screen 8 has a pore diameter of 4 mm and is used for screening fine sand.

The river dredging screening device of the embodiment realizes separation of mud, sand, stone, garbage and other impurities in river mud, and creates favorable conditions for mud dehydration at the rear end of the process.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. The utility model is not to be limited by the specific embodiments disclosed herein, but rather, embodiments falling within the scope of the appended claims are intended to be embraced by the utility model.

Claims

1. River channel dredging screening plant, its characterized in that:

The novel feeding device comprises a feeding hopper (3), wherein a discharge hole (31) of the feeding hopper (3) is of a horizontal structure, a first flushing unit (11) is arranged on one side of the feeding hopper (3), and a flushing hole of the first flushing unit (11) faces the discharge hole (31).

2. The river dredging screening apparatus according to claim 1, wherein:

the feed inlet (32) of the feed hopper (3) is in a frustum shape.

3. The river dredging screening apparatus according to claim 2, wherein:

the first flushing unit (11) is a flushing water pipe;

the flushing water pipe is arranged at the bevel edge of the frustum in the feeding hole (32).

4. A river dredging screening apparatus according to claim 3, wherein:

The flushing water pipes are symmetrically arranged, and the number of the flushing water pipes is two.

5. The river dredging screening apparatus according to claim 1, wherein:

The feeding hopper (3) is characterized in that a first screen (1) is arranged at a feeding hole (32) of the feeding hopper (3), a second flushing unit (12) is arranged on at least one side of the first screen (1), and a flushing hole of the second flushing unit (12) faces the first screen (1).

6. The river dredging screening apparatus according to claim 5, wherein:

a pushing unit (9) is arranged on one side of the first screen (1);

One end of the first screen (1) is hinged with the feeding port (32), and the acting end of the pushing unit (9) acts on the other end of the first screen (1) opposite to the hinge part (2).

7. The river dredging screening apparatus according to claim 6, wherein:

the pushing unit (9) is a hydraulic oil rod;

The acting end of the hydraulic oil rod is fixedly connected with the other end of the first screen (1) opposite to the hinge part (2).

8. The river dredging screening apparatus according to claim 6, wherein:

Also comprises a stone guide rail (14);

The inlet of the stone guide (14) is arranged at the hinge part (2) of the first screen (1).

9. The river dredging screening apparatus according to claim 8, wherein:

And a protective fence (15) is arranged on the stone guide rail (14).

10. The river dredging screening apparatus according to claim 5, wherein:

the second flushing units (12) are high-pressure flushing water cannons, are four in number and are distributed in a rectangular shape.