Self-priming pump and exhaust structure

Abstract

This invention relates to the field of self-priming pump technology, and discloses a self-priming pump and an exhaust structure. The exhaust structure includes a mounting base, on which a water inlet unit and an exhaust unit are provided. The water inlet unit includes a water inlet chamber opened within the mounting base, and a second sealing plug is movably connected within the water inlet chamber. The exhaust unit includes an exhaust chamber opened within the mounting base, and a first exhaust mechanism and a second exhaust mechanism are provided within the exhaust chamber. When the second exhaust mechanism and the first exhaust mechanism are far apart, the exhaust unit drives the first exhaust mechanism to open for air intake, and when the second exhaust mechanism and the first exhaust mechanism are close together, it drives the second exhaust mechanism to open for air blowing. This invention, by setting up a water inlet unit, uses the water inlet chamber to deliver water to the delivery pipe, so that the self-priming pump can start smoothly. At the same time, after the self-priming pump enters the working state, the water inlet unit allows water to be stored again inside the water inlet chamber, so that the self-priming pump can be used when restarting after a short stop.

Description

Technical Field

[0001] This invention belongs to the field of self-priming pump technology, specifically, it relates to a self-priming pump and an exhaust structure. Background Technology

[0002] A self-priming pump is specifically a self-priming centrifugal pump. It has advantages such as easy maintenance, high efficiency, long service life, and strong self-priming ability. Usually, self-priming pumps are equipped with a self-venting structure inside to vent air and ensure that the self-priming pump can work normally.

[0003] Chinese patent CN221423527U discloses an exhaust structure for a self-priming pump. Through the cooperation of a pull rope, compression spring, locking rod, and locking block, the filter plate can be quickly removed from the housing, allowing for rapid cleaning after prolonged filtration, thus improving the pump's efficiency. Through the cooperation of a retaining ring, sliding rod, spring, and sealing cap, the sealing cap can block the retaining ring after pumping, allowing exhaust by opening the sealing cap. After exhaust, the sealing cap closes the retaining ring to prevent gas backflow, thereby ensuring pumping quality.

[0004] However, this technical solution still has at least the following drawbacks: It lacks the ability to store water during subsequent use, and cannot quickly provide water to achieve rapid venting when restarting after a short shutdown. Therefore, this invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a self-priming pump and an exhaust structure. By setting up a water inlet unit, water is supplied to the delivery pipe through the water inlet chamber, so that the self-priming pump can start smoothly. At the same time, after the self-priming pump enters the working state, the water inlet unit stores water again in the water inlet chamber, so that the self-priming pump can be used after a short stop, which is convenient and quick, without the need for manual water addition. By setting up an exhaust unit, air is evacuated from the delivery pipe, so that the water in the water source is lifted upwards in the delivery pipe, making it easier for the self-priming pump to draw water out more quickly.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] The exhaust structure includes a mounting base, on which a water inlet unit and an exhaust unit are provided;

[0008] The water inlet unit includes a water inlet cavity formed in the mounting base, and a second sealing plug is movably connected in the water inlet cavity;

[0009] The exhaust unit includes an exhaust chamber opened in the mounting base. The exhaust chamber is provided with a first exhaust mechanism and a second exhaust mechanism. When the second exhaust mechanism and the first exhaust mechanism are far apart, the exhaust unit drives the first exhaust mechanism to open to draw in air, and when the second exhaust mechanism and the first exhaust mechanism are close together, the exhaust unit drives the second exhaust mechanism to open to blow air.

[0010] A linkage unit is provided between the water inlet unit and the exhaust unit. The linkage unit includes a third gear, and tooth grooves and racks are respectively provided on both sides of the third gear. The tooth grooves and racks mesh with the third gear to enable the water inlet unit and the exhaust unit to work together.

[0011] In a preferred embodiment of the present invention, the water inlet unit further includes a sealing mechanism, the sealing mechanism including a first sealing plug, a connecting plate fixedly installed on one side of the first sealing plug, the two sides of the connecting plate being rotatably connected to the inner wall of the water inlet cavity, and a locking component provided at one end of the sealing mechanism, the sealing mechanism controlling the first sealing plug to open so that the bottom of the water inlet cavity is opened by the locking component.

[0012] In a preferred embodiment of the present invention, the locking assembly includes a lever located outside the mounting base, with a rotating shaft fixedly mounted at the bottom of the lever. The rotating shaft movably passes through the mounting base. A rotating plate is fixedly mounted on one side of the rotating shaft inside the water inlet chamber. A rotating rod is fixedly mounted on one end of the rotating plate. A movable groove is provided at one end of the connecting plate, and the rotating rod is movably connected to the movable groove. A locking groove is provided on one side of the second sealing plug, and a locking rod is fixedly mounted on the lever, the locking rod being adapted to the locking groove.

[0013] In a preferred embodiment of the present invention, a second mounting bracket is fixedly installed on the top of the second sealing plug, the tooth groove is formed on one side of the second mounting bracket, and the second mounting bracket is also provided with a slot on one side of the tooth groove. The linkage unit further includes a support mechanism, the support mechanism includes a fixing plate, the fixing plate is fixedly installed on the top of the mounting base, a limit shaft is fixedly installed on the fixing plate, and the third gear is movably sleeved on the limit shaft.

[0014] In a preferred embodiment of the present invention, the linkage unit further includes a support base, on which a first mounting bracket is fixedly installed at both ends. The side of the first mounting bracket near the water inlet unit is movably connected to the rack via a support rod. A third sliding groove is provided on both sides of the rack, and a push plate is slidably connected to the third sliding groove. The push plate is rotatably connected to a third gear, and the push plate is movably sleeved on the third gear. The rack and the third gear achieve synchronous translational movement through the push plate.

[0015] In a preferred embodiment of the present invention, a plug rod is rotatably mounted on the bottom of the support base, the plug rod is movably inserted into the top of the mounting base, the bottom of the plug rod has a groove, the side of the plug rod has a flat surface, push posts are movably inserted into both sides of the mounting base, the push posts are aligned with the plug rod, a stop bar is fixedly mounted on one end of the push post, the top of the plug rod passes through the support base and is fixedly mounted with a first gear, a second gear is meshed with one side of the first gear, a knob is fixedly mounted on the top of the first gear, and a pull bracket is rotatably mounted on the top of the knob.

[0016] In a preferred embodiment of the present invention, a first pushing mechanism and a second pushing mechanism are respectively provided on both sides of the mounting base. The first pushing mechanism includes a first fixed base, a first rocker arm is rotatably mounted on one side of the first fixed base, a first torsion spring is installed between the first rocker arm and the first fixed base, and a first sliding groove is provided on the first rocker arm.

[0017] The second pushing mechanism includes a second fixed seat, a second rocker arm rotatably mounted on one side of the second fixed seat, a second torsion spring installed between the second rocker arm and the second fixed seat, and a second sliding groove provided on the second rocker arm;

[0018] Both the first fixed seat and the second fixed seat are fixedly connected to the mounting base, and both the first sliding groove and the second sliding groove are slidably connected to the stop rod.

[0019] In a preferred embodiment of the present invention, mounting plates are movably sleeved at both ends of the limiting shaft, and a sliding rod is fixedly installed at the bottom of the mounting plate. One end of the sliding rod movably passes through the fixed plate and extends to the outside. A push rod is fixedly installed at the bottom of one end of the sliding rod. When the first pushing mechanism and the second pushing mechanism are working, they drive the push rod to move.

[0020] In a preferred embodiment of the present invention, the first exhaust mechanism includes a fixed plug, which is fixedly installed at the bottom of the exhaust chamber. A first air passage is provided on the fixed plug, and a first support column is movably inserted into the fixed plug. A first sealing plate and a first bottom plate are fixedly installed at the top and bottom of the first support column, respectively, and a first spring is movably sleeved at the bottom of the first support column.

[0021] The second exhaust mechanism includes a piston, which is fixedly connected to the first mounting bracket and movably connected to the exhaust chamber. A second air passage is provided on the piston, and a second support column is movably inserted into the piston. A second sealing plate and a second bottom plate are fixedly installed on the top and bottom of the second support column, respectively, and a second spring is movably sleeved on the bottom of the second support column.

[0022] A self-priming pump is used to install an exhaust structure, including a self-priming pump body. A bent pipe is installed at one end of the self-priming pump body, and a delivery pipe is installed at the other end of the bent pipe. A mounting base is fixedly installed on the delivery pipe, and both the water inlet chamber and the exhaust chamber are connected to the delivery pipe. A baffle is installed inside the delivery pipe, and filter screens are fixedly installed on both sides of the baffle. A power unit is installed on the baffle through a drive shaft.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] This invention provides a water inlet unit that delivers water to the delivery pipe through the water inlet chamber, enabling the self-priming pump to start smoothly. After the self-priming pump enters the working state, the water inlet unit allows water to be stored in the water inlet chamber again, making it convenient and quick to start the self-priming pump after a short shutdown, without the need for manual water replenishment.

[0025] This invention uses an exhaust unit to evacuate the delivery pipe, thereby lifting the water from the water source upwards and enabling the self-priming pump to draw the water out more quickly. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the self-priming pump and exhaust structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the delivery pipe of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure at the connecting plate of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the fixing plug in this invention;

[0030] Figure 5 This is a schematic diagram of the piston structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure at the second rocker arm of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure at the first rocker arm of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure at the tooth groove of the present invention;

[0034] Figure 9 This is a schematic diagram of the rack structure of the present invention;

[0035] Figure 10 This is a schematic diagram of the exploded structure at the third gear of the present invention;

[0036] Figure 11 This is a schematic diagram of the structure at the second fixing seat of the present invention;

[0037] Figure 12 This is a schematic diagram of the structure of the first fixing seat of the present invention.

[0038] Figure label:

[0039] 100. Self-priming pump body; 101. Bent pipe; 102. Delivery pipe; 103. Power unit; 104. Baffle; 105. Filter screen;

[0040] 200. Mounting base; 201. Fixing plug; 202. First air passage; 203. First support column; 204. First sealing plate; 205. First base plate; 206. First spring; 207. Piston; 208. Second air passage; 209. Second support column; 210. Second sealing plate; 211. Second base plate; 212. Second spring; 213. First mounting bracket;

[0041] 300. First sealing plug; 301. Connecting plate; 302. Movable groove; 303. Rotating shaft; 304. Rotating plate; 305. Rotating rod; 306. Toggle rod; 307. Second sealing plug; 308. Locking rod; 309. Locking groove; 310. Second mounting bracket;

[0042] 400. Support base; 401. First gear; 402. Second gear; 403. Insert rod; 404. Groove; 405. Flat surface; 406. Push column; 407. Stop bar; 408. Knob; 409. Pull bracket;

[0043] 500, First fixed seat; 501, First rocker arm; 502, First slide groove; 503, First torsion spring; 504, Second fixed seat; 505, Second rocker arm; 506, Second slide groove; 507, Second torsion spring;

[0044] 600. Fixed plate; 601. Limiting shaft; 602. Third gear; 603. Gear groove; 604. Empty groove; 605. Push plate; 606. Rack; 607. Third slide groove; 608. Mounting plate; 609. Slide rod; 610. Push rod. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0046] Example 1

[0047] like Figures 1 to 12 As shown, the exhaust structure includes a mounting base 200, on which a water inlet unit and an exhaust unit are provided;

[0048] The water inlet unit includes a water inlet cavity opened in the mounting base 200, and a second sealing plug 307 is movably connected in the water inlet cavity;

[0049] The exhaust unit includes an exhaust chamber opened in the mounting base 200. A first exhaust mechanism and a second exhaust mechanism are provided in the exhaust chamber. When the second exhaust mechanism and the first exhaust mechanism are far apart, the exhaust unit drives the first exhaust mechanism to open to draw in air, and when the second exhaust mechanism and the first exhaust mechanism are close together, it drives the second exhaust mechanism to open to blow air.

[0050] A linkage unit is provided between the water inlet unit and the exhaust unit. The linkage unit includes a third gear 602. The third gear 602 has a tooth groove 603 and a rack 606 on both sides. The tooth groove 603 and the rack 606 mesh on the third gear 602 to enable the water inlet unit and the exhaust unit to work together.

[0051] like Figures 2 to 3 As shown, in a specific embodiment, the water inlet unit further includes a sealing mechanism, which includes a first sealing plug 300. A connecting plate 301 is fixedly installed on one side of the first sealing plug 300. Both sides of the connecting plate 301 are rotatably connected to the inner wall of the water inlet chamber. A locking component is provided at one end of the sealing mechanism. The sealing mechanism controls the first sealing plug 300 to open so that the bottom of the water inlet chamber is opened through the locking component. In this configuration, when the first sealing plug 300 seals the water inlet chamber, the water inside the water inlet chamber can be retained for subsequent reuse.

[0052] like Figures 1 to 3 As shown, the locking assembly further includes a lever 306, which is located outside the mounting base 200. A rotating shaft 303 is fixedly mounted on the bottom of the lever 306, and the rotating shaft 303 movably passes through the mounting base 200. A rotating plate 304 is fixedly mounted on one side of the rotating shaft 303 inside the water inlet chamber. A rotating rod 305 is fixedly mounted on one end of the rotating plate 304. A movable groove 302 is opened at one end of the connecting plate 301, and the rotating rod 305 is movably connected in the movable groove 302. A slot 309 is opened on one side of the second sealing plug 307, and a locking rod 308 is fixedly mounted on the lever 306. The locking rod 308 is adapted to the slot 309. In this configuration, the slot 309 has a shape that combines an arc and a straight line. When the locking rod 308 is located in the arc section of the slot 309, the second sealing plug 307 is in a locked state. When the locking rod 308 is in the vertical section of the slot 309, the second sealing plug 307 is in an unlocked state.

[0053] Example 2

[0054] like Figures 6 to 8As shown, a second mounting bracket 310 is fixedly installed on the top of the second sealing plug 307. A toothed groove 603 is formed on one side of the second mounting bracket 310. A slot 604 is also formed on one side of the toothed groove 603 on the second mounting bracket 310. The linkage unit also includes a support mechanism, which includes a fixing plate 600. The fixing plate 600 is fixedly installed on the top of the mounting base 200. A limiting shaft 601 is fixedly installed on the fixing plate 600. The third gear 602 is movably sleeved on the limiting shaft 601. In this configuration, when the third gear 602 is aligned with the toothed groove 603, the two mesh with each other. When the third gear 602 is aligned with the slot 604, the third gear 602 does not mesh with the toothed groove 603. The limiting shaft 601 has a limiting groove, and the third gear 602, sleeved on the limiting shaft 601, still maintains its rotational function.

[0055] like Figure 6 , Figure 7 , Figure 8 , Figure 10 As shown, in a specific embodiment, the linkage unit further includes a support base 400. First mounting brackets 213 are fixedly installed at both ends of the support base 400. The side of the first mounting bracket 213 closest to the water inlet unit is movably connected to the rack 606 via a support rod. Third sliding grooves 607 are provided on both sides of the rack 606. Push plates 605 are slidably connected to the third sliding grooves 607. Push plates 605 are rotatably connected to the third gear 602, and are movably sleeved on the third gear 602. The rack 606 and the third gear 602 achieve synchronous translational movement through the push plates 605. In this configuration, when the third gear 602 and the rack 606 move relative to each other, the push plates 605 slide relative to the rack 606. The limiting effect of the push plates 605 ensures that the third gear 602 and the rack 606 always remain on the same plane.

[0056] like Figure 9 , Figure 11 , Figure 12 As shown, furthermore, a rod 403 is rotatably mounted on the bottom of the support base 400. The rod 403 is movably inserted into the top of the mounting base 200. A groove 404 is formed at the bottom of the rod 403, and a flat surface 405 is formed on the side of the rod 403. Push posts 406 are movably inserted into both sides of the mounting base 200. The push posts 406 are aligned with the rod 403. A stop bar 407 is fixedly mounted at one end of the push post 406. The top of the rod 403 passes through the support base 400 and is fixedly mounted with a first gear 401. A second gear 402 is meshed with one side of the first gear 401. A knob 408 is fixedly mounted on the top of the first gear 401, and a pull bracket 409 is rotatably mounted on the top of the knob 408. In this configuration, there are two rods 403 and their connecting parts. When one of the first gears 401 rotates, the meshing of the second gear 402 causes the other first gear 401 to rotate simultaneously, so that the push posts 406 on both sides move simultaneously.

[0057] like Figures 11 to 12 As shown, further, a first pushing mechanism and a second pushing mechanism are respectively provided on both sides of the mounting base 200. The first pushing mechanism includes a first fixed base 500. A first rocker arm 501 is rotatably mounted on one side of the first fixed base 500. A first torsion spring 503 is installed between the first rocker arm 501 and the first fixed base 500. A first sliding groove 502 is provided on the first rocker arm 501.

[0058] The second pushing mechanism includes a second fixed seat 504, a second rocker arm 505 is rotatably mounted on one side of the second fixed seat 504, a second torsion spring 507 is installed between the second rocker arm 505 and the second fixed seat 504, and a second sliding groove 506 is provided on the second rocker arm 505.

[0059] Both the first fixed seat 500 and the second fixed seat 504 are fixedly connected to the mounting seat 200, and both the first sliding groove 502 and the second sliding groove 506 are slidably connected to the stop bar 407.

[0060] In this configuration, the first fixed seat 500 in the first pushing mechanism is located near the middle of the first rocker arm 501, so that the moving direction of the push column 406 is opposite to the moving direction of one end of the first rocker arm 501. In the second pushing mechanism, the second fixed seat 504 is located at the end of the second rocker arm 505, so that the moving direction of the push column 406 is the same as the moving direction of one end of the second rocker arm 505, so that when the push columns 406 on both sides extend or retract, one end of the first rocker arm 501 and the second rocker arm 505 rotate in the same direction.

[0061] like Figures 6 to 8 As shown, further, mounting plates 608 are movably sleeved at both ends of the limiting shaft 601, and a slide rod 609 is fixedly installed at the bottom of the mounting plate 608. One end of the slide rod 609 movably passes through the fixed plate 600 and extends to the outside. A push rod 610 is fixedly installed at the bottom of one end of the slide rod 609. When the first pushing mechanism and the second pushing mechanism work, they drive the push rod 610 to move.

[0062] like Figure 2 , Figure 4 , Figure 5 As shown, the first exhaust mechanism further includes a fixed plug 201, which is fixedly installed at the bottom of the exhaust chamber. A first air passage 202 is opened on the fixed plug 201. A first support column 203 is also movably inserted into the fixed plug 201. A first sealing plate 204 and a first bottom plate 205 are fixedly installed at the top and bottom of the first support column 203, respectively. A first spring 206 is also movably sleeved at the bottom of the first support column 203.

[0063] The second exhaust mechanism includes a piston 207, which is fixedly connected to the first mounting bracket 213 and movably connected to the exhaust chamber. A second air passage 208 is provided on the piston 207, and a second support column 209 is movably inserted into the piston 207. A second sealing plate 210 and a second bottom plate 211 are fixedly installed on the top and bottom of the second support column 209, respectively. A second spring 212 is movably sleeved on the bottom of the second support column 209.

[0064] In this configuration, when the second exhaust mechanism rises, the negative pressure generated inside causes the second sealing plate 210 to be pressed downward, thus blocking the second air passage 208, and the first sealing plate 204 to be pressed upward, thus opening the first air passage 202. When the second exhaust mechanism falls, the positive pressure generated inside causes the second sealing plate 210 to be pressed upward, thus opening the second air passage 208, and the first sealing plate 204 to be pressed downward, thus closing the first air passage 202.

[0065] Example 3

[0066] like Figures 1 to 2 As shown, a self-priming pump is used to install an exhaust structure, including a self-priming pump body 100. A bent pipe 101 is installed at one end of the self-priming pump body 100, and a delivery pipe 102 is installed at one end of the bent pipe 101. A mounting base 200 is fixedly installed on the delivery pipe 102, and both the water inlet chamber and the exhaust chamber are connected to the delivery pipe 102. A baffle 104 is installed inside the delivery pipe 102, and filter screens 105 are fixedly installed on both sides of the baffle 104. A power unit 103 is installed on the baffle 104 through a drive shaft.

[0067] The implementation principle of the self-priming pump and exhaust structure in this embodiment is as follows: Before the self-priming pump is started, the baffle 104 is in the state of blocking the delivery pipe 102. At this time, the lever 306 is moved to unlock the locking lever 308 and the locking groove 309, and the pull bracket 409 is pulled up to drive the first mounting bracket 213 to rise. The first mounting bracket 213 drives the piston 207 to rise, so that the pressure between the piston 207 and the fixed plug 201 is reduced. At this time, the air in the delivery pipe 102 pushes open the first sealing plate 204 under the action of pressure and enters the exhaust chamber. The pressure in the delivery pipe 102 is reduced, so that the liquid level at one end is raised.

[0068] When the first mounting bracket 213 rises, it drives the rack 606 to rise. The rack 606 drives the third gear 602 to rotate. The third gear 602 drives the second mounting bracket 310 to fall through meshing with the tooth groove 603. The second mounting bracket 310 drives the second sealing plug 307 to fall. When the lever 306 is turned, it drives the rotating shaft 303 to rotate. The rotating shaft 303 drives the rotating rod 305 to press down through the rotating plate 304, so that the connecting plate 301 drives the first sealing plug 300 to tilt up. At this time, the water inlet chamber is connected to the delivery pipe 102. When the second sealing plug 307 falls, it delivers the water in the water inlet chamber to the delivery pipe 102 and enters the water inlet of the self-priming pump body 100 through the bent pipe 101.

[0069] When the puller 409 rises, it drives the support seat 400 to rise, and the support seat 400 drives the insert rod 403 to rise. When the piston 207 moves to the top, the second sealing plug 307 moves to the bottom. At this time, the insert rod 403 moves to the state where the groove 404 is aligned with the push column 406, so that the second rocker 505 loses support. At this time, the second rocker 505 rotates under the action of the second torsion spring 507 and pushes the push rod 610 to move. The push rod 610 drives the mounting plate 608 to move through the slide rod 609. The mounting plate 608 drives the push plate 605 to move, so that the third gear 602 and the rack 606 move. At this time, the third gear 602 moves to the empty groove 604 and is offset from the tooth groove 603.

[0070] Rotate knob 408, knob 408 drives first gear 401 to rotate, first gear 401 drives insert rod 403 to rotate, so that flat surface 405 rotates to be aligned with push column 406. At this time, press down pull bracket 409 to make piston 207 descend, and during the descent, the gas in exhaust chamber is discharged through second air passage 208.

[0071] At this time, the self-priming pump body 100 is started. During the start-up phase, the self-priming pump body 100 delivers the water in the bend pipe 101 to the impeller. The power unit 103 is controlled to open the baffle 104. At this time, the suction of the self-priming pump body 100 enables the delivery pipe 102 to successfully deliver the water flow to the impeller.

[0072] After the self-priming pump body 100 is in normal working condition, manually pull the second mounting bracket 310 to reset the second sealing plug 307. When the second sealing plug 307 is reset, the negative pressure generated in the water inlet chamber causes water to flow into the water inlet chamber. After the reset is completed, the lever 306 can be turned to lock the second sealing plug 307 again through the locking lever 308 and the locking groove 309. At the same time, the sealing effect of the first sealing plug 300 allows the water in the air inlet chamber to be retained for the next use.

[0073] At this time, since the second mounting bracket 310 and the first mounting bracket 213 are both in the initial state, and the third gear 602 is always engaged with the rack 606, the third gear 602 is also engaged with the tooth groove 603. Rotate the knob 408 again to reset the insertion rod 403. During the rotation, the flat surface 405 of the insertion rod 403 disengages from the push post 406 to lift the push post 406 and reset it. During the lifting process, the push post 406 pushes one end of the first rocker arm 501 so that its other end drives the push rod 610 to move, thereby resetting the third gear 602 and maintaining its engagement with the tooth groove 603 and the rack 606.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An exhaust structure, characterized in that, Includes a mounting base (200), on which a water inlet unit and an exhaust unit are provided; The water inlet unit includes a water inlet cavity opened in the mounting base (200), and a second sealing plug (307) is movably connected in the water inlet cavity. The exhaust unit includes an exhaust chamber opened in the mounting base (200), and a first exhaust mechanism and a second exhaust mechanism are provided in the exhaust chamber. When the second exhaust mechanism and the first exhaust mechanism are far apart, the exhaust unit drives the first exhaust mechanism to open to draw in air, and when the second exhaust mechanism and the first exhaust mechanism are close together, the exhaust unit drives the second exhaust mechanism to open to blow air. A linkage unit is provided between the water inlet unit and the exhaust unit. The linkage unit includes a third gear (602). The third gear (602) has a tooth groove (603) and a rack (606) on both sides respectively. The tooth groove (603) and the rack (606) mesh with the third gear (602) to make the water inlet unit and the exhaust unit work together. The water inlet unit also includes a sealing mechanism, which includes a first sealing plug (300). A connecting plate (301) is fixedly installed on one side of the first sealing plug (300). The two sides of the connecting plate (301) are rotatably connected to the inner wall of the water inlet chamber. A locking component is provided at one end of the sealing mechanism. The sealing mechanism controls the first sealing plug (300) to open so that the bottom of the water inlet chamber is opened through the locking component. The second sealing plug (307) is fixedly mounted with a second mounting bracket (310), the toothed groove (603) is opened on one side of the second mounting bracket (310), and the second mounting bracket (310) is also provided with a slot (604) on one side of the toothed groove (603). The linkage unit also includes a support mechanism, the support mechanism includes a fixing plate (600), the fixing plate (600) is fixedly mounted on the top of the mounting base (200), the fixing plate (600) is fixedly mounted with a limit shaft (601), and the third gear (602) is movably sleeved on the limit shaft (601). The linkage unit also includes a support base (400), on which a first mounting bracket (213) is fixedly installed at both ends. The side of the first mounting bracket (213) near the water inlet unit is movably connected to the rack (606) via a support rod. A third sliding groove (607) is provided on both sides of the rack (606). A push plate (605) is slidably connected on the third sliding groove (607). The push plate (605) is rotatably connected to the third gear (602). The push plate (605) is movably sleeved on the third gear (602). The rack (606) and the third gear (602) achieve synchronous translational movement through the push plate (605). A rod (403) is rotatably mounted on the bottom of the support base (400). The rod (403) is movably inserted into the top of the mounting base (200). A groove (404) is provided at the bottom of the rod (403). A flat surface (405) is provided on the side of the rod (403). Push pins (406) are movably inserted into both sides of the mounting base (200). The push pins (406) are aligned with the rod (403). A stop bar (407) is fixedly installed at one end of the push pins (406). The top of the rod (403) passes through the support base (400) and is fixedly mounted with a first gear (401). A second gear (402) is meshed with one side of the first gear (401). The mounting base (200) is provided with a first pushing mechanism and a second pushing mechanism on both sides respectively. The first pushing mechanism includes a first fixed base (500). A first rocker arm (501) is rotatably mounted on one side of the first fixed base (500). A first torsion spring (503) is installed between the first rocker arm (501) and the first fixed base (500). A first sliding groove (502) is provided on the first rocker arm (501). The second pushing mechanism includes a second fixed seat (504), a second rocker arm (505) is rotatably mounted on one side of the second fixed seat (504), a second torsion spring (507) is installed between the second rocker arm (505) and the second fixed seat (504), and a second slide groove (506) is provided on the second rocker arm (505). The first fixed seat (500) and the second fixed seat (504) are both fixedly connected to the mounting seat (200), and the first sliding groove (502) and the second sliding groove (506) are both slidably connected to the stop bar (407); The limiting shaft (601) is movably sleeved with mounting plates (608) at both ends. A slide rod (609) is fixedly installed at the bottom of the mounting plate (608). One end of the slide rod (609) movably passes through the fixed plate (600) and extends to the outside. A push rod (610) is fixedly installed at the bottom of one end of the slide rod (609). When the first pushing mechanism and the second pushing mechanism work, they drive the push rod (610) to move.

2. The exhaust structure according to claim 1, characterized in that, The locking assembly includes a lever (306), which is located outside the mounting base (200). A rotating shaft (303) is fixedly installed at the bottom of the lever (306). The rotating shaft (303) movably passes through the mounting base (200). A rotating plate (304) is fixedly installed on one side of the rotating shaft (303) inside the water inlet chamber. A rotating rod (305) is fixedly installed at one end of the rotating plate (304). A movable groove (302) is opened at one end of the connecting plate (301). The rotating rod (305) is movably connected in the movable groove (302). A slot (309) is opened on one side of the second sealing plug (307). A locking rod (308) is fixedly installed on the lever (306). The locking rod (308) is adapted to the slot (309).

3. The exhaust structure according to claim 2, characterized in that, A knob (408) is fixedly mounted on the top of the first gear (401), and a pull bracket (409) is rotatably mounted on the top of the knob (408).

4. The exhaust structure according to claim 3, characterized in that, The first exhaust mechanism includes a fixed plug (201), which is fixedly installed at the bottom of the exhaust chamber. A first air passage (202) is opened on the fixed plug (201). A first support column (203) is also movably inserted into the fixed plug (201). A first sealing plate (204) and a first bottom plate (205) are fixedly installed at the top and bottom of the first support column (203), respectively. A first spring (206) is also movably sleeved at the bottom of the first support column (203). The second exhaust mechanism includes a piston (207), which is fixedly connected to the first mounting bracket (213). The piston (207) is movably connected to the exhaust chamber. A second air passage (208) is provided on the piston (207). A second support column (209) is also movably inserted into the piston (207). A second sealing plate (210) and a second bottom plate (211) are fixedly installed on the top and bottom of the second support column (209), respectively. A second spring (212) is also movably sleeved on the bottom of the second support column (209).

5. A self-priming pump, used to install the exhaust structure according to any one of claims 1-4, characterized in that, The system includes a self-priming pump body (100), one end of which is fitted with a bent pipe (101), and the other end of which is fitted with a conveying pipe (102). The mounting base (200) is fixedly installed on the conveying pipe (102), and both the water inlet chamber and the exhaust chamber are connected to the conveying pipe (102). A baffle (104) is installed inside the conveying pipe (102), and filter screens (105) are fixedly installed on both sides of the baffle (104). A power device (103) is installed on the baffle (104) through a drive shaft.

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