Underground continuous wall bottom negative pressure type gravel cleaning device

Abstract

The utility model provides a kind of underground continuous wall bottom negative pressure type gravel cleaning device, belong to hydraulic engineering underground continuous wall construction technical field, comprising: vertical pipeline, gas source system, loudspeaker mouth, discharge assembly, metal plate.The utility model, using air compressor, gas hose forms high-pressure gas output supply, loudspeaker mouth inside of vertical pipeline bottom is connected metal plate, metal plate and the inside wall of loudspeaker mouth form oblique upward airflow passage, when high-speed airflow is sprayed into airflow passage inside, venturi effect is generated in loudspeaker mouth, and the negative pressure adsorption fragment is generated, compared with sand pump, it is not easy to block, and small particle and gravel can be thoroughly removed;Compared with grab mechanical applicability is stronger;Compared with artificial cleaning efficiency is higher, it is worth popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of construction technology of underground continuous walls in water conservancy projects, specifically a negative pressure gravel cleaning device at the bottom of an underground continuous wall. Background Technology

[0002] During the construction of the anti-seepage wall, impurities such as gravel and mud easily accumulate at the bottom of the trench. Traditional cleaning methods, such as sand pumps or grab buckets, have the following drawbacks:

[0003] 1. Sand pumps are prone to clogging, resulting in low cleaning efficiency and difficulty in completely removing fine particles and gravel;

[0004] 2. Grab machinery has limited operating space and poor adaptability to narrow and deep slots;

[0005] 3. Manual cleaning is labor-intensive and poses safety hazards.

[0006] Therefore, this utility model provides a negative pressure gravel cleaning device for the bottom of underground continuous wall, used to clean gravel in narrow areas (bottom of the slot). Utility Model Content

[0007] To address the difficulty of clearing gravel in narrow areas, this invention provides a negative pressure gravel clearing device for the bottom of underground continuous walls.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A negative pressure rubble removal device for the bottom of an underground continuous wall includes:

[0010] A vertical pipe, the top of which is provided with a discharge component, and the bottom of which is located at the inner bottom of the slot is fixedly installed with a flared mouth;

[0011] An air compressor, wherein the air outlet end of the air compressor is connected to an air delivery hose, and a metal plate is fixedly connected to the inner side of the flared mouth, the metal plate and the inner side wall of the flared mouth forming an upwardly angled airflow channel, and the end of the air delivery hose away from the air compressor is fixedly connected to the outer side of the flared mouth, and the air delivery hose is connected to the airflow channel.

[0012] As a further description of the above technical solution:

[0013] The vertical pipe is either a segmented threaded connection pipe or a segmented flange connection pipe.

[0014] As a further description of the above technical solution:

[0015] A flexible sealing skirt is fixedly installed at the bottom of the flared opening, and the height of the flexible sealing skirt is 40-90mm.

[0016] As a further description of the above technical solution:

[0017] The discharge assembly includes:

[0018] A horizontal pipe that is fixedly installed at the top of a vertical pipe and is positioned horizontally.

[0019] A conical filter element is fixedly installed at the end of the horizontal pipe away from the vertical pipe;

[0020] The horizontal pipe has a branch pipe fixedly connected to its side at an angle downwards.

[0021] As a further description of the above technical solution:

[0022] Also includes:

[0023] A slag collection trough is installed on the ground plane at the top of the slot;

[0024] The bottom end of the branch pipe is located inside the slag collection tank.

[0025] As a further description of the above technical solution:

[0026] A flexible connection is provided on the horizontal pipe and on the section of the branch pipe that is far away from the vertical pipe;

[0027] A base plate is fixedly connected to the bottom of a section of a horizontal pipe located away from the vertical pipe. A foot is hinged to the base plate and fixedly installed on the ground plane at the top of the slot.

[0028] As a further description of the above technical solution:

[0029] The section of the horizontal pipe located on the branch pipe away from the vertical pipe and the area on the horizontal pipe located at the top of the branch pipe form a low-pressure section.

[0030] As a further description of the above technical solution:

[0031] The angle between the airflow channel and the vertical pipe is 30°-60°.

[0032] The beneficial effects of this utility model are:

[0033] This invention utilizes an air compressor and a flexible air hose to supply high-pressure gas. A metal plate is connected to the inner side of the flared end at the bottom of a vertical pipe. The metal plate and the inner wall of the flared end form an upward-sloping airflow channel. When high-speed airflow is ejected into the airflow channel, a Venturi effect is generated inside the flared end, creating negative pressure that adsorbs debris. Compared to sand pumps, this method is less prone to clogging and can thoroughly remove fine particles and gravel. Compared to grab buckets, it has greater mechanical applicability. Compared to manual cleaning, it is more efficient and worthy of widespread application. Attached Figure Description

[0034] The following figures are shown to more clearly illustrate a negative pressure gravel removal device at the bottom of an underground continuous wall;

[0035] Figure 1 This is a schematic diagram of the present invention.

[0036] The labels in the attached diagram;

[0037] 1. Slot; 2. Vertical pipe; 3. Bell mouth; 4. Flexible sealing skirt; 5. Metal plate; 6. Gas delivery hose; 7. Air compressor; 8. Slag collection tank; 9. Conical filter element; 10. Branch pipe; 11. Foot; 12. Base plate; 13. Flexible connection part; a. Low pressure section. Detailed Implementation

[0038] Please refer to the attached document. Figure 1 This application illustrates a negative pressure gravel cleaning device for the bottom of a continuous underground wall, used to clean gravel in narrow areas (bottom of the slot). Specifically, it includes: a vertical pipe 2 and an air source system. A discharge assembly is installed at the top of the vertical pipe 2 to discharge the discharged gravel to a suitable location. A flared opening 3 is fixedly installed at the bottom of the vertical pipe 2, located inside the slot 1. The flared opening 3 has a structure that is smaller at the top and larger at the bottom. The air source system includes an air compressor 7 and an air delivery hose 6. The air outlet of the air compressor 7 is connected to the air delivery hose 6. A metal plate 5 is fixedly connected to the inner side of the flared opening 3. The metal plate 5 is sheet-like and can be arc-shaped, multi-bent, etc. The metal plate 5 and the inner wall of the flared opening 3 form an upwardly sloping airflow channel. The end of the air delivery hose 6 away from the air compressor 7 is fixedly connected to the outer side of the flared opening 3, and the air delivery hose 6 communicates with the airflow channel.

[0039] When in use, align the bottom of the horn 3 with the gap in the underground continuous wall, and the air source system (air compressor 7) is activated. High-pressure gas is injected through the air delivery hose 6 and, guided by the airflow channel, the airflow is injected upward along the vertical pipe 2. This creates a Venturi effect inside the horn, and the resulting negative pressure adsorbs the crushed material, which flows upward along the vertical pipe 2 and is ejected from the discharge component, thus cleaning the crushed stone at the bottom of the slot.

[0040] In one embodiment, the vertical pipe 2 is a segmented threaded connection pipe, with two adjacent pipe sections fixedly installed by threads.

[0041] In one embodiment, the vertical pipe 2 is a segmented flange-connected pipe, with two adjacent pipe sections fixedly installed through a flange structure.

[0042] The segmented, multi-section, detachable / assembleable pipe structure facilitates transportation and installation. When dealing with slots of different heights, the number of pipe sections can be selected according to requirements.

[0043] In one embodiment, a flexible sealing skirt 4 is fixedly installed at the bottom of the flared mouth 3. The flexible sealing skirt 4 is made of wear-resistant rubber material, which can protect the bottom of the flared mouth 3. Generally, the height of the flexible sealing skirt 4 is 40-90mm, which can enhance the fit between the bottom of the flexible sealing skirt 4 and the irregular bottom surface.

[0044] In one embodiment, the discharge assembly includes: a horizontal pipe fixedly installed at the top of the vertical pipe 2 and arranged horizontally; a conical filter element 9 fixedly installed at the port of the horizontal pipe away from the vertical pipe 2; and a branch pipe 10 arranged obliquely downwards fixedly connected to the side of the horizontal pipe.

[0045] The horizontal pipe is used to guide gravel and debris and adjust the direction of airflow. The conical filter element 9 can filter gravel and debris and allow airflow to flow out. The branch pipe 10 is used to guide gravel and debris to fall downwards.

[0046] In one embodiment, it further includes: a slag collection trough 8 disposed on the ground plane at the top of the slot 1, with the bottom end of the branch pipe 10 located inside the slag collection trough 8.

[0047] The slag collection trough 8 is used to store gravel, debris, and other items that fall from the bottom of the branch pipe 10.

[0048] In one embodiment, a flexible connection 13 is provided on the horizontal pipe and on the section of the branch pipe 10 away from the vertical pipe 2. A base plate 12 is fixedly connected to the bottom of the horizontal pipe and on the section of the branch pipe 10 away from the vertical pipe 2. A foot 11 is hinged on the base plate 12 and fixedly installed on the ground plane at the top of the slot 1.

[0049] Through the designed flexible connection part 13, the user can press down on the horizontal pipe above the branch pipe 10, which can deform downwards, so that the horizontal pipe part on the base plate 12 is tilted. In this way, the gravel in the horizontal pipe part on the base plate 12 can fall down and fall into the slag collection tank 8 through the branch pipe 10.

[0050] In one embodiment, a section of the horizontal pipe located away from the vertical pipe 2 and a region on the horizontal pipe located at the top of the branch pipe 10 form a low-pressure section a. Solids such as gravel and debris fall downwards under the influence of gravity in the low-pressure section a, and can fall more effectively from the branch pipe 10.

[0051] In one embodiment, the angle between the airflow channel and the vertical pipe 2 is generally designed to be 30°-60°, such as 36°, 42°, 50°, etc., to ensure that the airflow is obliquely upward.

[0052] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0053] It should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A negative pressure type gravel cleaning device for the bottom of an underground continuous wall, characterized in that, include: A vertical pipe (2) is provided with a discharge component at the top end of the vertical pipe (2) and a flared mouth (3) is fixedly installed at the bottom end of the vertical pipe (2) and at the bottom of the slot (1). An air compressor (7) is provided with an air delivery hose (6) connected to its outlet end. A metal plate (5) is fixedly connected to the inner side of the horn (3). The metal plate (5) and the inner wall of the horn (3) form an upwardly oriented airflow channel. The end of the air delivery hose (6) away from the air compressor (7) is fixedly connected to the outer side of the horn (3), and the air delivery hose (6) is connected to the airflow channel.

2. The negative pressure type gravel cleaning device at the bottom of an underground continuous wall according to claim 1, characterized in that: The vertical pipe (2) is a segmented threaded connection pipe or the vertical pipe (2) is a segmented flange connection pipe.

3. The negative pressure gravel cleaning device at the bottom of an underground continuous wall according to claim 1, characterized in that: A flexible sealing skirt (4) is fixedly installed at the bottom of the flared mouth (3), and the height of the flexible sealing skirt (4) is 40-90mm.

4. The negative pressure type gravel cleaning device at the bottom of an underground continuous wall according to claim 3, characterized in that, The discharge assembly includes: A horizontal pipe that is fixedly installed at the top of the vertical pipe (2) and is set horizontally; A conical filter element (9) is fixedly installed at the port of the horizontal pipe away from the vertical pipe (2); A branch pipe (10) is fixedly connected to the side of the horizontal pipe at an angle downward.

5. A negative pressure gravel cleaning device for the bottom of a continuous underground wall according to claim 4, characterized in that, Also includes: A slag collection trough (8) is set on the ground plane at the top of the slot (1); The bottom end of the branch pipe (10) is located inside the slag collection tank (8).

6. The negative pressure type gravel cleaning device at the bottom of an underground continuous wall according to claim 4, characterized in that: A flexible connection (13) is provided on a section of the horizontal pipe that is away from the vertical pipe (2) and located on the branch pipe (10). A base plate (12) is fixedly connected to the bottom of a section of the horizontal pipe located away from the vertical pipe (2) of the branch pipe (10). A foot (11) is hinged to the base plate (12), and the foot (11) is fixedly installed on the ground plane at the top of the slot (1).

7. The negative pressure type gravel cleaning device at the bottom of an underground continuous wall according to claim 4, characterized in that: A section of the horizontal pipe located on the branch pipe (10) away from the vertical pipe (2) forms a low-pressure section (a) with a region on the horizontal pipe located at the top of the branch pipe (10).

8. The negative pressure gravel cleaning device at the bottom of an underground continuous wall according to claim 1, characterized in that: The angle between the airflow channel and the vertical pipe (2) is 30°-60°.

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