Self-cleaning type air bag for underground air supply and using method of self-cleaning type air bag

Abstract

The invention discloses a self-cleaning type air bag for underground air supply and a using method thereof, and the self-cleaning type air bag comprises a cylindrical barrel which is horizontally arranged; the air inlet pipe is communicated with the upper surface of the cylindrical barrel; the air outlet pipe is communicated with the upper surface of the cylindrical barrel; the two transverse pipes are symmetrically distributed about the central axis of the cylindrical barrel, and the two ends of the transverse pipes communicate with the two ends of the cylindrical barrel; the magnetic block is arranged in the transverse pipe in a sliding fit manner; the annular moving cavity is vertically distributed to restrain the two transverse pipes in the annular moving cavity; the extension ring is located on the outer edge of the annular moving cavity and extends outwards to be in contact with the inner wall of the cylindrical barrel; and the two hoops are fixedly connected in the ring of the annular moving seat and are in sliding connection with the two transverse pipes, and the two hoops are attracted with the magnetic block. The oil dirt removing device has the beneficial effects that the extension ring moves back and forth in the cylindrical barrel, and oil dirt on the inner ring wall of the cylindrical barrel is comprehensively removed.

Description

Technical Field

[0001] This invention relates to the field of underground mining operations technology, and in particular to a self-cleaning air supply unit for underground ventilation and its usage method. Background Technology

[0002] Downhole operations are typically supported by air compressors, with the air compressor and air tank working together to form the core downhole air supply system. The air tank has inspection ports, and the oil and grease inside must be cleaned regularly. The existing operating procedures are as follows: After opening the manhole or handhole, ensure the air tank is completely isolated from the system and the internal pressure is zero. Then, use specialized tools through the inspection port, such as wooden mallets, copper hammers (tools that do not easily generate sparks), or specialized explosion-proof scrapers, to manually scrape and clean the air tank from the outside. This operation is particularly laborious and has blind spots. For particularly stubborn oil and grease, under the guidance of professionals, a special oil stain cleaner can be used for spraying or soaking.

[0003] For example, Chinese invention patent authorization announcement number CN114849367B discloses a 0.8 cubic meter gas-water separator, including a bottom support, a cylindrical tank, a column tube, a three-way pipe, a pressure gauge, an inlet pipe, an outlet pipe, an electric regulating valve, a hose, a drain pipe, a ball valve, a pneumatic motor, bearings, a circular sealing plate, brush bristles, a rotating rod, an outer long tube, an arc groove, an annular block, an inner short tube, a filter disc, an outer circular hole, an outer rubber disc, an inner rubber disc, and an inner circular hole. The inner wall cleaning component rotates the connected rotating rod 16 and its installed brush bristle 15 by the pneumatic motor 12. However, the contact between the brush bristles and the inner annular wall of the cylindrical tank 2 is flexible, making it ineffective at removing stubborn grease. The position of the rotating rod and brush bristles is fixed relative to the round can, and the area of ​​the inner ring wall of the round can that can be contacted is fixed and limited, making it impossible to clean the inner ring wall completely; moreover, when inspection and maintenance are required, the rotating rod and brush bristles will block or obstruct the visual inspection of the inner wall, increasing the difficulty of manual inspection. Summary of the Invention

[0004] The technical problem to be solved by this invention is that existing air bag cleaning components cannot effectively remove stubborn oil stains, have a fixed and limited cleaning area, and increase the difficulty of inspection. To address this, a self-cleaning air bag for downhole air supply and its usage method are provided.

[0005] The technical solution of the present invention is: a self-cleaning air pack for downhole air supply, comprising: a cylindrical body, the cylindrical body being horizontally positioned; an air inlet pipe, the air inlet pipe being connected to the upper surface of the cylindrical body; an air outlet pipe, the air outlet pipe being connected to the upper surface of the cylindrical body; at least two horizontal pipes, the two horizontal pipes being symmetrically distributed about the central axis of the cylindrical body and having their ends connected to both ends of the cylindrical body; a magnetic block, the magnetic block being slidably fitted inside the horizontal pipe; an annular moving cavity, the annular moving cavity being vertically distributed and constraining the two horizontal pipes within it; an extension ring, the extension ring being located at the outer edge of the annular moving cavity and extending outward to contact the inner wall of the cylindrical body; two clamps, the two clamps being fixedly connected to the annular moving seat within the ring and slidably connected to the two horizontal pipes, the two clamps being attracted to the magnetic block; and an air pump, the air pump being connected to one end of each of the two horizontal pipes via air pipes.

[0006] The improvement of the above scheme is that the annular moving cavity is provided with a liquid injection port, and a number of nozzles are evenly distributed on the outer circumferential surface of the annular moving cavity.

[0007] In the above scheme, the extension ring is located on one side of the annular moving cavity.

[0008] In the above scheme, the extension ring is located on both sides of the annular moving cavity.

[0009] The annular moving cavity described in the above scheme is made of an elastic material.

[0010] The method of using a self-cleaning air manifold for downhole air supply includes the following steps: After the air manifold is stopped, air is blown into the horizontal tube by an air pump to push the magnetic block to move. The magnetic block drives the annular moving cavity to slide along the horizontal tube through the clamp. The extended ring contacts the inner wall of the cylindrical body to remove the adhering oil stains. When the magnetic block moves to the end of the horizontal tube away from the air pump, air is drawn in by the air pump. The magnetic block is driven back to the initial position by the negative pressure, which drives the annular moving cavity back to the initial position. This process is repeated to remove the oil stains from the inner wall of the cylindrical body.

[0011] The beneficial effect of this invention is that the cooperation of the horizontal tube, magnetic block, clamp, annular moving cavity and extension ring allows the extension ring to move back and forth in the cylindrical body, so as to more thoroughly remove the oil stains adhering to the inner ring wall of the cylindrical body, while occupying little internal space of the cylindrical body and not affecting the normal operation of the air receiver. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the self-cleaning air supply unit for downhole air supply according to the present invention; Figure 2 yes Figure 1 Front view of the annular moving cavity and the extension ring; Figure 3 This is a schematic diagram of a preferred embodiment of the present invention; In the diagram, 1. Cylindrical cylinder, 2. Inlet pipe, 3. Outlet pipe, 4. Horizontal pipe, 5. Magnetic block, 6. Annular moving cavity, 7. Extension ring, 8. Clamp, 9. Air pump, 10. Air pipe, 11. Nozzle. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments implemented by those skilled in the art without creative effort are within the protection scope of the present invention.

[0014] like Figure 1-2 As shown, a self-cleaning air supply unit for downhole ventilation includes: a cylindrical body 1, which is horizontally positioned; an air inlet pipe 2, which is connected to the upper surface of the cylindrical body; an air outlet pipe 3, which is connected to the upper surface of the cylindrical body; at least two horizontal pipes 4, which are symmetrically distributed about the central axis of the cylindrical body and whose ends are connected to the two ends of the cylindrical body; a magnetic block 5, which is slidably fitted inside the horizontal pipe; an annular moving cavity 6, which is vertically distributed and constrains the two horizontal pipes; an extension ring 7, which is located at the outer edge of the annular moving cavity and extends outward to contact the inner wall of the cylindrical body; two clamps 8, which are fixed inside the annular moving seat and slidably connected to the two horizontal pipes, and the two clamps are attracted to the magnetic block; and an air pump 9, which is connected to one end of each of the two horizontal pipes through an air pipe 10.

[0015] Specifically, the cylindrical body is equipped with a reliable safety valve and a drain valve. An inspection port is located at one end of the cylindrical body. The inlet and outlet pipes are located at opposite ends of the upper surface of the cylindrical body. The air pump is a vortex pump, which can be switched via an interface to perform blowing or suction functions. To ensure consistent gas flow rate in each horizontal pipe, two air pumps can be installed, and a PLC can be used to coordinate and control two or more vortex pumps to ensure consistent gas flow rate entering the two pipes. The horizontal pipes are made of austenitic stainless steel with a wall thickness of less than 1mm to ensure sufficient magnetic attraction to overcome the sliding friction between the clamp and the pipe fitting.

[0016] In one embodiment of the present invention, there are two horizontal tubes. The magnetic block inside each horizontal tube can be either clearance-fitted or in a movable-seal fit with the tube. When the magnetic block is in a movable-seal fit with the horizontal tube, the horizontal tube is divided into two cavities. Of course, there can be three or more horizontal tubes. The more horizontal tubes there are, the more corresponding magnetic blocks and clamps there are, and the more reliable the constraint on the annular moving cavity. The annular moving cavity is made of a rigid material.

[0017] The method of using a self-cleaning air manifold for downhole air supply includes the following steps: After the air manifold is stopped, air is blown into the horizontal tube by an air pump to push the magnetic block to move. The magnetic block drives the annular moving cavity to slide along the horizontal tube through the clamp. The extended ring contacts the inner wall of the cylindrical body to remove the adhering oil stains. When the magnetic block moves to the end of the horizontal tube away from the air pump, air is drawn in by the air pump. The magnetic block is driven back to the initial position by the negative pressure, which drives the annular moving cavity back to the initial position. This process is repeated to remove the oil stains from the inner wall of the cylindrical body.

[0018] In a preferred embodiment of the present invention, the annular moving cavity is provided with an injection port, and a plurality of nozzles 11 are evenly distributed on the outer circumferential surface of the annular moving cavity. When it is necessary to clean stubborn grease from the inner ring wall of the cylindrical cylinder, the inspection hole is opened, the hose is connected to the injection port, and an external water pump is used to pump in the grease cleaner. As the annular moving cavity moves back and forth, the grease cleaner is sprayed onto the inner ring wall of the cylindrical cylinder through the nozzles, and then scraped off by the extension ring, which can peel off stubborn grease. After the grease cleaner is sprayed out, the hose is removed, the injection port is closed, and finally, the inside of the cylindrical cylinder is ensured to be dry before the inspection hole is closed. The annular moving cavity is made of elastic material. When no grease cleaner is injected, it is in a contracted state, reducing the space occupied. When grease cleaner is injected, the annular moving cavity expands, which will drive the extension ring to further squeeze the inner ring wall of the cylindrical cylinder, improving the grease removal efficiency.

[0019] As an embodiment of the present invention, the extension ring can be inclined at a certain angle to the annular moving cavity, so that the extension ring and the inner ring wall of the cylindrical body have an angle, which can improve the cleaning effect of oil stains and avoid damaging the inner wall of the cylindrical body.

[0020] As one embodiment of the present invention, there is one extension ring located on one side of the annular moving cavity; there may also be two, such as... Figure 3 As shown, they are located on both sides of the annular moving cavity. Clearly, the two extended rings provide a larger and more comprehensive cleaning area.

Claims

1. A self-cleaning air supply unit for downhole ventilation, characterized by: include: A cylindrical body (1) is horizontally positioned; an air inlet pipe (2) is connected to the upper surface of the cylindrical body; An exhaust pipe (3) is connected to the upper surface of a cylindrical body; at least two horizontal pipes (4) are symmetrically distributed about the central axis of the cylindrical body and their ends are connected to the two ends of the cylindrical body; a magnetic block (5) is slidably fitted inside the horizontal pipe; and an annular moving cavity (6) is vertically distributed to constrain the two horizontal pipes. Extension ring (7), the extension ring is located on the outer edge of the annular moving cavity and extends outward to contact the inner wall of the cylindrical body; two clamps (8), the two clamps are fixed in the ring of the annular moving seat and are slidably connected to the two horizontal tubes, the two clamps are attracted to the magnetic block; air pump (9), the air pump is connected to one end of the two horizontal tubes through air pipes (10).

2. The self-cleaning air supply unit for downhole air supply as described in claim 1, characterized in that: The annular moving cavity is provided with an injection port, and a number of nozzles (11) are evenly distributed on the outer circumferential surface of the annular moving cavity.

3. The self-cleaning air supply unit for downhole air supply as described in claim 1, characterized in that: The extension ring is located on one side of the annular moving cavity.

4. The self-cleaning air supply unit for downhole air supply as described in claim 1, characterized in that: The extension rings are located on both sides of the annular moving cavity.

5. The self-cleaning air supply unit for downhole air supply as described in claim 2, characterized in that: The annular moving cavity is made of an elastic material.

6. The method of using the self-cleaning air manifold for downhole air supply as described in claim 1, characterized in that: Includes the following steps: After the blower stops, air is blown into the horizontal tube by the air pump, which pushes the magnetic block to move. The magnetic block moves along the horizontal tube through the clamp, and the extended ring contacts the inner wall of the cylindrical body to remove the oil stains. When the magnetic block moves to the end of the horizontal tube away from the air pump, the air pump draws in air, and the magnetic block is driven back to the initial position by the negative pressure, which in turn drives the annular moving cavity back to the initial position. This process is repeated to remove the oil stains from the inner wall of the cylindrical body.

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