A stratified pumping test device and its blockage clearing method

Abstract

The present invention discloses a layered pumping test device and a blockage clearing method thereof, and relates to the technical field of pumping test in geological exploration. The present invention comprises a pumping cannula, the top of the pumping cannula is connected to a pumping pump and an air cylinder, the top of the air cylinder is connected to an air pump, and a blockage clearing power assembly is provided in the air cylinder and the pumping cannula; the bottom of the pumping cannula is connected to a suction pipe head, and a plurality of rows of seepage holes are provided around the upper ring of the suction pipe head, and a blockage clearing assembly is provided in the suction pipe head corresponding to each row of seepage holes and below the blockage clearing power assembly; a horizontal retaining ring assembly is provided on the pumping cannula. The present invention can clear the blockage of the suction assembly immediately, so that the suction pipe head can complete the blockage clearing in the borehole, eliminating the trouble of extracting the water from the borehole to carry out the cleaning. The invention is convenient to use, saves time, and helps to indirectly improve the use and operation efficiency of the device.

Description

Technical Field

[0001] The invention relates to the technical field of water pumping tests in geological exploration, in particular to a layered water pumping test device and a blockage clearing method thereof. Background Art

[0002] In hydrogeological and engineering surveys, stratified pumping tests of different aquifers can accurately capture detailed hydrogeological parameters. This involves pumping water from different depths. This is a commonly used technique in hydrogeological exploration, enabling the acquisition of hydrological characteristics at different depths within a single borehole, thereby reducing drilling costs.

[0003] In the prior art, the invention patent published by the Hydrogeological and Environmental Geological Survey Center of the China Geological Survey with publication number CN105089664A provides an automatic measurement system and method for a multi-aquifer deep-hole stratified pumping test. The system includes an aquifer sealer for isolating multiple aquifers from each other, and a data acquisition and processing device for measuring the hydrogeological parameters of different aquifers. The data acquisition and processing device includes an uphole data processing and display unit and a downhole data acquisition unit, which are respectively arranged in a sealed shell. The communication cable of the downhole data acquisition unit passes through the aquifer sealer and extends into the aquifer downhole to collect dynamic information of the aquifer. The uphole data processing and display unit is used to receive the dynamic information and process it to generate hydrogeological parameter data, thereby isolating multiple aquifers from each other, and measuring the hydrogeological parameters of each aquifer separately and displaying them in real time.

[0004] The invention patent published by Sichuan Institute of Geological Engineering Group Co., Ltd. with publication number CN110700348A provides a method and device for layered water-stopping outside the casing of a groundwater layered pumping test. It uses water-swelling rubber containing sodium polyacrylate super absorbent resin as the water-stopping material for the gap outside the test casing. According to the pumping test period, the water-stopping time and expansion ratio of the water-swelling rubber material are controlled by controlling the component ratio of the sodium polyacrylate super absorbent resin added to the water-swelling rubber material, thereby adjusting the time to complete the gap closure and water-stopping.

[0005] The existing stratified water pumping device has a water absorption component inserted into the borehole, which may become clogged during long-term use. However, most of the water absorption components are not equipped with a mechanism that can actively clear the blockage. As a result, after the blockage occurs, the water absorption component generally needs to be extracted from the borehole to clear the blockage, which is cumbersome to operate and indirectly affects the efficiency of the device. Summary of the Invention

[0006] The present invention provides a layered pumping test device and a blockage clearing method thereof, aiming to make up for the deficiencies of the prior art and solve at least one problem of the prior art mentioned in the background art.

[0007] The present invention adopts the following technical solutions to achieve the invention objectives:

[0008] A layered water pumping test device includes a water pumping cannula, the top of the water pumping cannula is connected to a water pump and an air cylinder, the top of the air cylinder is connected to the air pump, and a blockage clearing power assembly is provided in the air cylinder and the water pumping cannula; the bottom of the water pumping cannula is connected to a water suction pipe head, and a plurality of rows of water seepage holes are arranged around the upper circumference of the water suction pipe head, and a blockage clearing assembly is provided in the water suction pipe head corresponding to each row of water seepage holes and below the blockage clearing power assembly; a horizontal retaining ring assembly is provided on the water pumping cannula.

[0009] In the aforementioned stratified water pumping test device, two water sealing rings are respectively provided at the upper and lower ends of the water suction pipe head, and an inflatable leather ring is sealed between the two water sealing rings; the two upper water sealing rings and the two lower water sealing rings are connected by a first air injection pipe, and the upper water sealing ring is connected to the second air injection pipe, and the second air injection pipe is connected to the air pump through the first air guide hose.

[0010] In the aforementioned stratified pumping test device, the horizontal retaining ring assembly includes a sliding sleeve mounted on the water pumping pipe, a tightening bolt is screwed through the sliding sleeve, and the tightening bolt is in contact with the outer wall of the water pumping pipe; the sliding sleeve is upwardly connected to at least two vertical support shafts, and the vertical support shafts are connected to the horizontal retaining ring.

[0011] In the aforementioned stratified water pumping test device, the top end of the air cylinder is connected to the third air injection pipe, and the third air injection pipe is connected to the air pump through the second air guide hose.

[0012] In the aforementioned stratified water pumping test device, the top plate of the water pumping tube is connected to one end of a Z-shaped pipe, the bent portion of the Z-shaped pipe is connected to the air cylinder, and the other end of the Z-shaped pipe is connected to the water pump via a water hose.

[0013] In the aforementioned stratified pumping test device, the blockage clearing power assembly includes a sealing baffle arranged in the air cylinder, a sealed air cavity is formed between the sealing baffle and the top plate of the air cylinder, the sealing baffle is connected to the top end of the sliding shaft, and the bottom end of the sliding shaft is connected to the conical top cover arranged directly above the blockage clearing assembly; it also includes two mounting rings arranged at intervals inside the water pumping pipe, and the sliding mounting shaft is pushed through the two mounting rings by a first spring.

[0014] In the aforementioned stratified pumping test device, a water trough is provided on the conical top cover.

[0015] In the aforementioned stratified water pumping test device, the inner wall of the water suction pipe head is connected around a positioning shaft arranged in a one-to-one correspondence with the clearing assembly, and the positioning shaft is pushed and slidably connected to the clearing assembly through a second spring.

[0016] In the aforementioned stratified pumping test device, the blockage clearing assembly includes a vertical slide connected to a second spring, and the vertical slide is connected to a plug shaft with a conical top end arranged corresponding to the setting position of the corresponding column of seepage holes; the top end of the vertical slide is bent and tilted outward.

[0017] The cam is opened when the air pump is turned off and the air inlet is opened, and the air inlet is opened when the air inlet is opened. Beneficial effects

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this invention, an air pump can be used to inflate two inflatable leather rings. Once inflated, the two inflatable leather rings can block the water extraction layer in the borehole from top to bottom, preventing water from different water layers from mixing and affecting the accuracy of the experimental data after extraction. The above design effectively solves the problem of water from different water layers mixing during the stratified water extraction process and can effectively improve the accuracy of the final results of the stratified water extraction test.

[0020] 2. In the present invention, the air cylinder can be pressurized and inflated by an air pump, and the compression drives the sealing block plate, the sliding shaft and the conical top cover to slide downward. When the conical top cover slides downward, the inclined plane guiding principle can synchronously drive the clearing components and the multiple rows of plug shafts thereon to slide synchronously outward to penetrate and plug in the corresponding seepage holes on the suction pipe head to clear the seepage holes, thereby realizing instant cleaning of the blockage of the water suction component, so that the suction pipe head can be cleared in the drilled hole, eliminating the trouble of extracting it from the drilled hole for cleaning. It is convenient to use, saves time, and helps to indirectly improve the operating efficiency of the device.

[0021] 3. In this invention, both the sealing plate and the conical top cover are pneumatically actuated, making it particularly suitable for remotely deploying the blockage clearing assembly during drilling. This avoids interruptions caused by frequent blockages, thereby improving the efficiency of the entire water extraction process.

[0022] 4. In the present invention, the water pumping cannula can slide up and down along the sliding sleeve to adjust the water intake depth to achieve layered water intake, and the tightening bolt on the sliding sleeve can lock and fix the water pumping cannula to keep the water pumping cannula in the required use position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 Schematic diagram of the structure of the layered pumping test device provided by the present invention Figure 1 ;

[0025] Figure 2 Schematic diagram of the structure of the layered pumping test device provided by the present invention Figure 2 ;

[0026] Figure 3 Schematic diagram of the internal structure of the water pump, air cylinder and water suction pipe head of the present invention Figure 1 ;

[0027] Figure 4 Schematic diagram of the internal structure of the water pump, air cylinder and water suction pipe head of the present invention Figure 2 ;

[0028] Figure 5 Schematic diagram of the internal structure of the lower part of the water pumping cannula and the air cylinder of the present invention Figure 1 ;

[0029] Figure 6 Schematic diagram of the internal structure of the lower part of the water pumping cannula and the air cylinder of the present invention Figure 2 ;

[0030] Figure 7 Schematic diagram of the internal structure of the gas cylinder of the present invention and its structure with the conical top cover;

[0031] Figure 8 It is a schematic diagram of the conical top cover and its connection structure of the present invention.

[0032] Figure markings: 1-water suction pipe; 101-air cylinder; 102-Z-shaped connecting pipe; 103-third air injection pipe; 2-water suction pipe head; 201-water sealing ring; 202-inflatable leather ring; 203-first air injection pipe; 204-positioning shaft; 205-water seepage hole; 206-second air injection pipe; 207-second spring; 3-horizontal baffle ring assembly; 301-vertical support shaft; 302-sliding sleeve; 303-horizontal baffle ring; 4-air pump; 401-first air guide hose; 402-second air guide hose; 5-water suction pump; 501-water guide hose; 6-blocking power assembly; 601-sealing plug; 602-conical top cover; 603-water trough; 604-sliding shaft; 605-mounting ring; 606-first spring; 7-blocking assembly; 701-insertion shaft; 702-vertical slide plate. Implementation Method

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the embodiments of the present invention described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0035] In the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0036] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0037] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Example. A layered pumping test device, the structure of which is as follows Figure 1-Figure 7 As shown, it includes a water pumping cannula 1, the top of the water pumping cannula 1 is connected to a water pump 5 and an air cylinder 101 with a diameter larger than that of the water pumping cannula 1, the top of the air cylinder 101 is connected to the air pump 4, and a clearing power component 6 is provided in the air cylinder 101 and the water pumping cannula 1; the bottom of the water pumping cannula 1 is welded with a water suction pipe head 2, and the upper part of the water suction pipe head 2 is surrounded by multiple rows of seepage holes 205, and each row of seepage holes 205 is respectively provided with a clearing component 7 in the water suction pipe head 2; a horizontal retaining ring component 3 is provided on the water pumping cannula 1.

[0040] The water pumping cannula 1 is used to place the entire test device into the borehole.

[0041] Specifically, a row of scales is provided on the circumferential outer wall of the water extraction cannula 1 ; and three rows and four columns of water seepage holes 205 are provided on the circumferential outer wall of the water suction pipe head 2 .

[0042] Two water sealing rings 201 are symmetrically welded at the upper and lower ends of the water suction pipe head 2, with a total of four water sealing rings 201. An inflatable leather ring 202 is sealed and connected between the two water sealing rings 201 at the upper and lower ends, and the inflatable leather ring 202 and the two water sealing rings 201 are sealed to form an air bag; the two upper water sealing rings 201 and the two lower water sealing rings 201 are connected by a welded first air injection pipe 203, and the upper water sealing ring 201 is welded with a second air injection pipe 206, and the second air injection pipe 206 is connected to the air pump 4 through a first air guide hose 401.

[0043] The air pump 4 can inflate the two inflatable rings 202 via the first air guide hose 401, the second air injection pipe 206, and the first air injection pipe 203. Once inflated, the two inflatable rings 202 can seal the water layer in the borehole from top to bottom, preventing water from different water layers from mixing and affecting the accuracy of experimental data after extraction. When the water pump 5 is activated, water in the water layer in the borehole can be extracted sequentially through the water suction pipe head 2, the water extraction cannula 1, the water guide hose 501, and the water outlet at the top of the water pump 5.

[0044] The horizontal retaining ring assembly 3 includes a sliding sleeve 302 that is sleeved on the water pumping cannula 1, and a tightening bolt is screwed through the sliding sleeve 302, and the tightening bolt is in contact with the outer wall of the water pumping cannula 1; two L-shaped vertical support shafts 301 are welded upward to the sliding sleeve 302, and the vertical support shafts 301 are welded to the horizontal retaining ring 303.

[0045] The horizontal retaining ring assembly 3 is used to limit the position of the test device at the borehole. The water pumping cannula 1 can slide up and down along the sliding sleeve 302 to adjust the water intake depth and realize stratified water intake. The tightening bolt on the sliding sleeve 302 can lock and fix the water pumping cannula 1, so that the water pumping cannula 1 remains at the required operating length.

[0046] A third gas injection pipe 103 is welded to the middle of the top of the gas cylinder 101 , and the third gas injection pipe 103 is connected to the gas pump 4 through a second gas guide hose 402 .

[0047] The top plate of the water pumping cannula 1 is connected to one end of a Z-shaped pipe 102 , the bent portion of the Z-shaped pipe 102 is welded to the air cylinder 101 , and the other end of the Z-shaped pipe 102 is connected to the water pump 5 via a water hose 501 .

[0048] The blockage clearing power assembly 6 includes a sealing plug 601 arranged in the air cylinder 101, and a sealed air cavity is formed between the sealing plug 601 and the top plate of the air cylinder 101. The sealing plug 601 is welded to the top of the sliding shaft 604. The sliding shaft 604 is preferably a hexagonal sliding shaft. The bottom end of the sliding shaft 604 is welded to a conical top cover 602 directly above the blockage clearing assembly 7; it also includes two mounting rings 605 arranged at intervals inside the water pumping cannula 1, and the first spring 606 pushes the sliding mounting slide 604 through the two mounting rings 605.

[0049] The circumferential conical surface of the conical top cover 602 slides downward and comes into contact with the top bent portions of the four vertical slides 702 .

[0050] Two sealing rubber rings are installed on the outer circumference of the sealing plate 601 at intervals, and the two sealing rubber rings are in extrusion and friction contact with the inner wall of the air cylinder 101.

[0051] The conical top cover 602 is surrounded by four rectangular water grooves 603, which can ensure the water flow between the suction pipe head 2 and the water extraction intubation 1, and prevent the conical top cover 602 from being too large and blocking the bottom opening of the water extraction intubation 1, thereby affecting the water extraction flow.

[0052] The inner wall of the water suction pipe head 2 is surrounded by four positioning shafts 204 corresponding to the clearing components 7 one to one. The positioning shaft 204 is preferably a hexagonal positioning shaft, and the positioning shaft 204 is pushed and slidably connected to the clearing components 7 by a second spring 207.

[0053] The clearing assembly 7 includes a vertical slide 702 connected to the second spring 207. Attached to the slide 702 are plug shafts 701 with tapered tips, positioned corresponding to the positions of the corresponding rows of seepage holes 205. The tips of the slides 702 are bent outward and tilted. When the plug shafts 701 slide outward, they engage the seepage holes 205 on the suction pipe head 2 in a one-to-one fashion.

[0054] The above-mentioned clearing method of the stratified pumping test device, when the seepage hole 205 is blocked and needs to be cleared, the clearing method includes the following steps: closing the valve of the air pump 4 for inflating the second air injection pipe 206, and opening the valve for inflating the third air injection pipe 103, starting the air pump 4, inflating and pressurizing the air cylinder 101 through the second air guide hose 402 and the third air injection pipe 103, and overcoming the elastic force of the first spring 606 to drive the sealing plate 601, the sliding shaft 604 and the conical top cover 602 to slide downward, and the conical top cover 602 slides downward through the inclined surface of the conical top cover 602 and the bending inclination of the top of the vertical slide 702. The inclined sections cooperate to overcome the elastic force of the second spring 207, that is, through the principle of inclined surface guidance, synchronously drive the vertical slide 702 to slide outward. When the vertical slide 702 slides outward, it penetrates the water seepage hole 205 on the water suction pipe head 2 through the plug shaft 701 to clear the water seepage hole 205. After the blockage is cleared, the air pump 4 is deflated. Under the rebound action of the first spring 606, the first spring 606 pushes the sealing block 601, the sliding shaft 604 and the conical top cover 602 to reset. Under the rebound action of the second spring 207, the vertical slide 702 and the plug shaft 701 thereon are pushed back to reset. The plug shaft 701 is separated from the water seepage hole 205, which realizes the immediate clearing of the blockage of the water suction component, allowing the water suction pipe head 2 to be cleared in the drilled hole, eliminating the trouble of extracting it from the drilled hole to clean it. It is convenient to use, saves time, and helps to indirectly improve the operating efficiency of the device.

[0055] The sealing plug 601 and the conical top cover 602 are pneumatically driven, and are particularly suitable for remotely arranging the clearing components in a drilling operation.

[0056] In summary, when the stratified water pumping test device provided by the present invention is used, the water suction pipe head 2 and the water suction cannula 1 are inserted into the pre-drilled hole, the horizontal retaining ring assembly 3 is supported on the top opening of the hole, and then the air pump 4 is started. Conventional valves are provided on the two air guide hoses on the air pump 4. First, the air valve on the first air guide hose 401 is opened to inflate the two inflatable leather rings 202. After the two inflatable leather rings 202 are inflated, the water intake layer in the drilled hole can be sealed up and down; the water suction cannula 1 can slide up and down along the sliding sleeve 302 to adjust the water intake depth to achieve stratified water intake, and the tightening bolt on the sliding sleeve 302 can lock and fix the water suction cannula 1, so that the water suction cannula 1 is maintained at the required usage length; when the seepage hole 205 on the water suction pipe head 2 is blocked and needs to be cleaned, it can be cleaned according to the above method.

[0057] The circuits, electronic components, and modules involved in the present invention are all prior art and are fully capable of implementation by those skilled in the art. The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A stratified pumping test device, characterized in that: The invention comprises a water pumping cannula (1), the top of the water pumping cannula (1) is connected to a water pump (5) and an air cylinder (101), the top of the air cylinder (101) is connected to an air pump (4), and a blockage clearing power assembly (6) is provided in the air cylinder (101) and the water pumping cannula (1); the bottom of the water pumping cannula (1) is connected to a water suction pipe head (2), a plurality of rows of water seepage holes (205) are provided around the upper periphery of the water suction pipe head (2), and a blockage clearing assembly (7) is provided in the water suction pipe head (2) corresponding to each row of water seepage holes (205) and below the blockage clearing power assembly (6); a horizontal retaining ring assembly (3) is provided on the water pumping cannula (1): The horizontal retaining ring assembly (3) comprises a sliding sleeve (302) sleeved on the water pumping cannula (1), a tightening bolt being screwed through the sliding sleeve (302), and the tightening bolt being in contact with the outer wall of the water pumping cannula (1); the sliding sleeve (302) is upwardly connected to at least two vertical support shafts (301), and the vertical support shafts (301) are connected to the horizontal retaining ring (303); The blockage clearing power assembly (6) includes a sealing plug (601) arranged in the air cylinder (101), a sealed air cavity is formed between the sealing plug (601) and the top plate of the air cylinder (101), the sealing plug (601) is connected to the top end of the sliding shaft (604), and the bottom end of the sliding shaft (604) is connected to the conical top cover (602) arranged directly above the blockage clearing assembly (7); and further includes two mounting rings (605) arranged at intervals inside the water pumping cannula (1), and the two mounting rings (605) are pushed through the sliding mounting sliding shaft (604) by a first spring (606); The inner wall of the water suction pipe head (2) is connected to a positioning shaft (204) arranged in a one-to-one correspondence with the clearing assembly (7), and the positioning shaft (204) is pushed and slidably connected to the clearing assembly (7) via a second spring (207); The clearing assembly (7) comprises a vertical slide (702) connected to a second spring (207), and the vertical slide (702) is connected to a plug shaft (701) with a conical top end arranged corresponding to the position of the seepage holes (205) in the corresponding row; the top end of the vertical slide (702) is bent and tilted outward.

2. A stratified pumping test device according to claim 1, characterized in that: Two water sealing rings (201) are respectively provided at the upper and lower ends of the water suction pipe head (2), and an air-filled leather ring (202) is sealed between the two water sealing rings (201); the two upper water sealing rings (201) and the two lower water sealing rings (201) are connected via a first air injection pipe (203); the upper water sealing ring (201) is connected to a second air injection pipe (206), and the second air injection pipe (206) is connected to the air pump (4) via a first air guide hose (401).

3. A stratified pumping test device according to claim 1, characterized in that: The top plate of the water pumping cannula (1) is connected to one end of a Z-shaped pipe (102), the bent portion of the Z-shaped pipe (102) is connected to the air cylinder (101), and the other end of the Z-shaped pipe (102) is connected to the water pump (5) via a water guide hose (501).

4. A stratified pumping test device according to claim 1, characterized in that: The top end of the air cylinder (101) is connected to a third air injection pipe (103), and the third air injection pipe (103) is connected to the air pump (4) via a second air guide hose (402).

5. The stratified pumping test device according to claim 1, characterized in that: The conical top cover (602) is provided with a water channel (603).

6. The method for clearing blockage of a stratified pumping test device according to claim 1, characterized in that: When the seepage hole (205) is blocked and needs to be cleared, the clearing method includes the following steps: closing the valve of the air pump (4) for inflating the second air injection pipe (206), and opening the valve for inflating the third air injection pipe (103), starting the air pump (4), inflating and pressurizing the air cylinder (101) through the second air guide hose (402) and the third air injection pipe (103) and overcoming the elastic force of the first spring (606) to drive the sealing plate (601), the sliding shaft (604) and the conical top cover (602) to slide downward, and the conical top cover (602) is pushed down by the inclined surface of the conical top cover (602) and the vertical slide plate (702) when sliding downward. The bent inclined section at the end cooperates to overcome the elastic force of the second spring (207) to drive the vertical slide plate (702) to slide outward. When the vertical slide plate (702) slides outward, it penetrates and dredges the seepage hole (205) on the suction pipe head (2) through the plug shaft (701), thereby completing the clearing of the seepage hole (205); after the clearing is completed, the air pump (4) is deflated, and under the rebound action of the first spring (606), the sealing plate (601), the sliding shaft (604) and the conical top cover (602) are reset. Under the rebound action of the second spring (207), the vertical slide plate (702) and the plug shaft (701) are reset.

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