A deep well pump

Abstract

The present invention relates to a deep well pump, comprising a pump body, a protective cover is installed outside the pump body, a water inlet cavity and a mounting cavity are arranged inside the protective cover, the motor of the pump body is located in the mounting cavity, the water pump of the pump body is located in the water inlet cavity, a plurality of water inlet holes are opened on the cavity wall of the water inlet cavity away from the pump body, an annular filter screen is also arranged in the water inlet cavity, the filter screen is located between the plurality of water inlet holes and the water inlet of the pump body, and a protective end cover is wrapped around the bottom of the protective cover. The present invention has the effects of high protection and automatic sewage discharge.

Description

Technical Field

[0001] The invention relates to the field of water pumps, in particular to a deep well pump. Background Art

[0002] The deep well pump integrates the motor and the pump into one unit. It is a pump that is immersed in a groundwater well to pump and transport water. It is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment.

[0003] When a deep well pump is placed into a groundwater well, it is easy for it to shake and collide with the well wall due to the long distance and long body of the deep well pump. This can easily cause the deep well pump to deform, seriously affecting its use effect and service life. Summary of the invention

[0004] The present application provides a deep well pump having excellent protection performance and impurity filtering performance.

[0005] The deep well pump provided in this application adopts the following technical solution:

[0006] A deep well pump comprises a pump body, a protective cover is installed on the outside of the pump body, a water inlet cavity and a mounting cavity are arranged in the protective cover, the motor of the pump body is located in the mounting cavity, the water pump of the pump body is located in the water inlet cavity, a plurality of water inlet holes are opened on the cavity wall of the water inlet cavity away from the pump body, an annular filter screen is also arranged in the water inlet cavity, the filter screen is located between the plurality of water inlet holes and the water inlet of the pump body, and a protective end cover is wrapped around the bottom of the protective cover.

[0007] By adopting the above technical solution, a protective cover and a protective end cover are provided to protect the pump body. At the same time, most of the impurities in the water are removed through the secondary filtration of the water inlet hole and the filter screen, thereby protecting the water pump of the pump body.

[0008] Preferably, the end of the filter screen with a smaller diameter is installed on the cavity wall of the water inlet cavity close to the pump body, and the end of the filter screen with a larger diameter is installed on the wall of the water inlet cavity away from the pump body. The distance from the end of the filter screen with a smaller diameter to the installation cavity is smaller than the distance from the end of the filter screen with a larger diameter to the installation cavity.

[0009] By adopting the above technical solution, water will have a certain flushing effect on impurities remaining on the filter when passing through the filter, so that the impurities are accumulated on the end of the filter with a larger diameter, thereby reducing the impact of impurity accumulation on the overall filtering performance of the filter.

[0010] Preferably, a plurality of first sewage outlets are provided on the side wall of the water inlet chamber, and the plurality of first sewage outlets are flush with the height of the end of the filter screen with a larger diameter, the protective end cover is provided with an annular slide groove, a tubular part is slidably connected in the slide groove, and the protective cover is also provided with a driving mechanism for driving the tubular part to slide, the inner wall of the tubular part is provided with a accommodating ring groove, a plurality of second sewage outlets are provided on the side wall of the accommodating ring groove, and a plurality of third sewage outlets for communicating with the second sewage outlet are provided on the side wall of the slide groove, the distance from the bottom wall of the accommodating ring groove to the top wall of the third sewage outlet is h1, and the distance from the top wall of the accommodating ring groove to the bottom wall of the first sewage outlet is h2, in an initial state, the plurality of first sewage outlets are all connected to the accommodating ring groove, the inner wall of the slide groove blocks the plurality of second sewage outlets, and the plurality of third sewage outlets are located on the side of the plurality of second sewage outlets close to the bottom wall of the slide groove, and h1>h2.

[0011] By adopting the above technical solution, under the influence of water flow, a part of the impurities will be pushed into the containing annular groove through the multiple first sewage outlets. After a certain amount of impurities in the containing annular groove are accumulated, the driving mechanism drives the tubular member to slide toward the bottom wall of the slide groove, so that the multiple second sewage outlets are connected to the multiple third sewage outlets respectively, and the tubular member blocks the multiple first sewage outlets. Then, under the flushing of the external water flow, the impurities in the containing annular groove will be flushed away, achieving the effect of discharging the impurities accumulated on the filter net.

[0012] Preferably, a swivel is rotatably connected to the inner wall of the water inlet chamber close to the pump body, and the swivel is located on the side of the filter screen away from the installation chamber. The swivel is provided with multiple blades, and scrapers are provided at the bottom of the multiple blades, and the scrapers are in contact with the filter screen.

[0013] By adopting the above technical solution, under the impact of water flow, multiple fan blades will rotate and rotate with the scraper, so that the scraper will scrape the impurities on the filter net through the first sewage outlet into the receiving ring groove, which is convenient for the collection of impurities and further prevents the accumulation of impurities on the filter net.

[0014] Preferably, a plurality of one-way valves are embedded on the inner wall of the water inlet chamber, the plurality of one-way valves are connected to the water inlet chamber and the chute, the water outlets of the plurality of one-way valves are respectively opposite to a plurality of third sewage outlets, the one-way valves only supply water to flow from the water inlet chamber into the chute, and the tubular member blocks the plurality of one-way valves in the initial state.

[0015] By adopting the above technical solution, when the second sewage outlet is connected to the third sewage outlet, the drain pipe will not block the multiple one-way valves, and the clean water filtered by the filter will flow into the receiving ring groove through the one-way valve and flush the impurities in the receiving ring groove to the multiple third sewage outlets. The clean discharge effect of the impurities in the receiving ring groove is further improved. At the same time, it is not easy for the outside water to enter the receiving ring groove, so that the receiving ring groove is filled with filtered clean water. In this way, after the sub-tubular member moves and resets, when the receiving ring groove is connected to the water inlet cavity, it is not easy for sewage to enter the water inlet cavity, thereby ensuring the filtering effect of the drainage hole on large particles of impurities and preventing large particles of impurities from entering the water inlet cavity and then being difficult to discharge.

[0016] Preferably, an avoidance groove is provided on the side wall of the installation cavity away from the pump body, and the avoidance groove is connected to the slide groove. The driving mechanism includes a spring arranged in the slide groove, a limit block arranged on the inner wall of the tubular member, and a driving part that drives the tubular member to move toward the bottom wall of the slide groove. The limit block passes through the avoidance groove and extends into the installation cavity. One end of the spring is in contact with the end of the tubular member, and the other end of the spring is in contact with the bottom wall of the slide groove. The spring is always in a compressed state, and the spring drives the tubular member to move in the direction away from the bottom wall of the slide groove. In the initial state, the limit block is in contact with the side wall of the avoidance groove close to the water inlet cavity.

[0017] By adopting the above technical solution, the sliding of the tubular member is controlled through the cooperation of the driving part and the spring.

[0018] Preferably, the driving part includes a slider slidingly connected in the installation cavity, a reciprocating screw rotatably connected in the installation cavity, a gear 1 arranged on the reciprocating screw, a rotating shaft connected to the motor rotor of the pump body, a rotating wheel arranged on the rotating shaft, and a plurality of meshing teeth arranged on the rotating wheel. The slider is threadedly connected to the reciprocating screw, and the plurality of meshing teeth are used to mesh with gear 1. The limit block is located on the side of the slider away from the water inlet cavity, and the limit block is located on the movement path of the slider.

[0019] By adopting the above technical solution, when the motor of the pump body is started, it will drive the shaft to rotate, and the rotation of the shaft will drive the gear three to rotate through the rotating wheel and multiple meshing teeth. When the gear three rotates, it will drive the reciprocating screw to rotate, and the reciprocating screw will drive the slider to slide back and forth. During the downward movement of the slider, it will push the limit block to move and compress the spring, so that the tubular part slides toward the bottom wall of the slide groove. When the slider moves to the lowest point and moves upward, the spring rebounds and pushes the tubular part, and the limit block moves upward synchronously with the slider. In this process, the tubular part will slide away from the bottom wall of the slide groove. Finally, the limit block abuts against the side wall of the avoidance groove close to the water inlet chamber, the tubular part stops sliding, the accommodating annular groove connects multiple first sewage outlets, and the slider continues to move upward and reciprocate.

[0020] Preferably, a plurality of reinforcing rods are provided in the water inlet chamber, one end of each reinforcing rod is connected to a side wall of the water inlet chamber away from the pump body, and the other end of each reinforcing rod is connected to a side wall of the water inlet chamber close to the pump body.

[0021] By adopting the above technical solution, reinforcing rods are provided to compensate for the defect of reduced strength of the protective cover caused by the opening of multiple water inlet holes, thereby improving the strength of the protective cover and making it less likely to deform when the protective cover collides with the wall of the well.

[0022] The technical effects of the present invention are mainly reflected in the following aspects:

[0023] 1. The present invention provides a protective cover and a protective end cover to protect the pump body, and removes most of the impurities in the water through the water inlet hole and the secondary filtration of the filter screen to protect the water pump of the pump body;

[0024] 2. The present invention allows the tubular member to slide back and forth to continuously discharge the impurities in the annular groove, so that the impurities in the water inlet cavity will not accumulate too much and affect the filtration of the filter screen;

[0025] 3. The present invention converts the kinetic energy of the motor of the pump body into the kinetic energy of the sliding of the tubular member through the transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of a deep well pump.

[0027] Figure 2 yes Figure 1 Cross-sectional view of a medium-deep well pump along line AA.

[0028] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle.

[0029] Figure 4 yes Figure 2 A partial enlarged view of point C in the middle.

[0030] Figure 5 yes Figure 1 Cross-sectional view of a medium-deep well pump along line DD.

[0031] Figure 6 When the slider in the deep well pump moves to the position farthest from the water inlet chamber Figure 3 Schematic diagram of the structure of each component.

[0032] Figure 7 When the slider in the deep well pump moves to the position farthest from the water inlet chamber Figure 4 Schematic diagram of the structure of each component.

[0033] 1. Pump body; 11. Water inlet; 2. Protective cover; 21. Water inlet chamber; 22. Mounting chamber; 23. Water inlet hole; 24. First sewage outlet; 25. One-way valve; 26. Avoidance groove; 27. Reinforcement rod; 28. Guide rod; 3. Filter screen; 4. Protective end cover; 41. Slide groove; 42. Third sewage outlet; 5. Tubular member; 51. Accommodating ring groove; 52. Second sewage outlet; 6. Driving mechanism; 61. Spring; 62. Limiting block; 71. Rotating ring; 72. Fan blade; 73. Scraper; 8. Driving unit; 81. Sliding block; 82. Reciprocating screw; 83. Gear 1; 84. Rotating shaft; 85. Rotating wheel; 86. Meshing teeth. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.

[0035] Reference Figure 1 and Figure 2 A deep well pump of this embodiment includes a pump body 1. A protective cover 2 is installed on the outside of the pump body 1. A water inlet chamber 21 and an installation chamber 22 are arranged in the protective cover 2. The water inlet chamber 21 and the installation chamber 22 are separated and sealed by a spacer. The motor of the pump body 1 is located in the installation chamber 22, and the water pump of the pump body 1 is located in the water inlet chamber 21.

[0036] Reference Figure 1-Figure 3 A plurality of water inlet holes 23 are provided on the wall of the water inlet chamber 21 on one side away from the pump body 1. An annular filter screen 3 is also installed in the water inlet chamber 21. The filter screen 3 is located between the plurality of water inlet holes 23 and the water inlet 11 of the pump body 1. The end of the filter screen 3 with a smaller diameter is installed on the wall of the water inlet chamber 21 close to the pump body 1, and the end of the filter screen 3 with a larger diameter is installed on the wall of the water inlet chamber 21 away from the pump body 1. The distance from the end of the filter screen 3 with a smaller diameter to the installation chamber 22 is smaller than the distance from the end of the filter screen 3 with a larger diameter to the installation chamber 22.

[0037] Reference Figure 1-Figure 3 A plurality of first sewage outlets 24 are provided on the side wall of the water inlet chamber 21, and the plurality of first sewage outlets 24 are circumferentially distributed on the protective cover 2. The plurality of first sewage outlets 24 are flush with the end of the filter screen 3 with a larger diameter, and the plurality of first sewage outlets 24 all penetrate the protective cover 2. At the same time, a plurality of reinforcing rods 27 are fixed in the water inlet chamber 21, one end of the reinforcing rod 27 is connected to the side wall of the water inlet chamber 21 away from the pump body 1, and the other end of the reinforcing rod 27 is connected to the side wall of the water inlet chamber 21 close to the pump body 1.

[0038] Reference Figure 1-Figure 3A swivel 71 is rotatably connected to the inner wall of the water inlet chamber 21 close to the pump body 1. The swivel 71 is located on the side of the filter away from the installation chamber 22. A plurality of fan blades 72 are provided on the swivel 71. A scraper 73 is provided at the bottom of the plurality of fan blades 72. The scraper 73 is in contact with the filter screen 3.

[0039] Reference Figure 1-Figure 3 The bottom of the protective cover 2 is wrapped with a protective end cover 4, which wraps the installation cavity 22, thereby protecting the motor inside the installation cavity 22. An annular slide groove 41 is provided on the end surface of the protective end cover 4 close to the water inlet cavity 21 along the length direction of the protective cover 2, and a tubular member 5 is slidably connected to the inner edge of the slide groove 41. The tubular member 5 is also sleeved on the outside of the protective cover 2, and the inner wall of the tubular member 5 is in contact with the outer wall of the protective cover 2.

[0040] Reference Figure 1-Figure 3 , a receiving annular groove 51 is provided on the inner wall of the tubular member 5, a plurality of second sewage outlets 52 are provided on the side wall of the receiving annular groove 51 away from the water inlet chamber 21, and a plurality of third sewage outlets 42 for communicating with the second sewage outlets 52 are provided on the side wall of the chute 41 away from the protective cover 2. The distance from the bottom wall of the receiving annular groove 51 to the top wall of the third sewage outlet 42 is h1, and the distance from the top wall of the receiving annular groove 51 to the bottom wall of the first sewage outlet 24 is h2. In the initial state, the plurality of first sewage outlets 24 are all connected to the receiving annular groove 51, and the inner wall of the chute 41 blocks the plurality of second sewage outlets 52. The plurality of third sewage outlets 42 are located on the side of the plurality of second sewage outlets 52 close to the bottom wall of the chute 41, and h1>h2.

[0041] Reference Figure 1-Figure 3 A plurality of one-way valves 25 are embedded on the inner wall of the water inlet chamber 21, and the plurality of one-way valves 25 are circumferentially distributed on the protective cover 2. The plurality of one-way valves 25 are connected to the water inlet chamber 21 and the chute 41. The water outlets of the plurality of one-way valves 25 are respectively opposite to the plurality of third sewage outlets 42. The one-way valves 25 only allow water to flow from the water inlet chamber 21 into the chute 41. In the initial state, the tubular member 5 blocks the plurality of one-way valves 25.

[0042] Reference Figure 1 , Figure 2 and Figure 4 Two avoidance grooves 26 are provided on the side wall of the installation cavity 22 away from the motor, and the two avoidance grooves 26 are arranged opposite to each other. Both avoidance grooves 26 are connected to the slide groove 41 and the installation cavity 22. The protective cover 2 is also provided with a driving mechanism 6 for driving the tubular member 5 to slide, and the driving mechanism 6 includes a spring 61 placed in the slide groove 41 and two limit blocks 62 fixed on the inner wall of the tubular member 5. The two limit blocks 62 pass through the avoidance groove 26 and extend into the installation cavity 22.

[0043] Reference Figure 1 , Figure 2 and Figure 4The spring 61 is sleeved on the anti-slip cover, one end of the spring 61 is in conflict with the end of the tubular member 5, and the other end of the spring 61 is in conflict with the bottom wall of the slide groove 41. The spring 61 is always in a compressed state. In the initial state, the spring 61 drives the tubular member 5 to move away from the bottom wall of the slide groove 41 so that the two limit blocks 62 are in conflict with the side walls of the two avoidance grooves 26 close to the water inlet chamber 21.

[0044] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 A guide rod 28 is fixed in the installation cavity 22, and the axis of the guide rod 28 is parallel to the axis of the motor of the pump body 1. The driving mechanism 6 also includes a driving part 8 that drives the tubular member 5 to move toward the bottom wall of the slide groove 41. The driving part 8 includes a slider 81 that is slidably connected to the guide rod 28 along the length direction of the guide rod 28, a reciprocating screw 82 that is rotatably connected to the installation cavity 22, a gear 1 83 coaxially fixed to the bottom end of the reciprocating screw 82, a rotating shaft 84 connected to the motor rotor of the pump body 1, a rotating wheel 85 coaxially fixed to the rotating shaft 84, and a plurality of meshing teeth 86 fixed to the outer peripheral side wall of the rotating wheel 85. One end of the rotating shaft 84 extends out of the motor of the pump body 1, and the rotating wheel 85 is fixed to one end of the rotating shaft 84 that extends out of the motor. The plurality of meshing teeth 86 on the rotating wheel 85 are used to mesh with the gear 1 83, and the plurality of meshing teeth 86 are connected to each other. At the beginning, one of the meshing teeth 86 meshes with the gear.

[0045] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 , wherein the axis of the reciprocating screw 82 is parallel to the axis of the guide rod 28, and the reciprocating screw 82 and the guide rod 28 are arranged on both sides of the motor. The slider 81 is an annular block, and the slider 81 is sleeved on the outside of the motor of the pump body 1, and the slider 81 is also threadedly connected to the reciprocating screw 82. In the initial state, the slider 81 is located at the position closest to the water inlet chamber 21 in its movement path, and the two limit blocks 62 are located on the side of the slider 81 away from the water inlet chamber 21, and the two limit blocks 62 are located on the downward movement path of the slider 81.

[0046] Reference Figure 1-Figure 7 The specific steps for using the deep well pump in this application are as follows:

[0047] First, the pump body 1 of the present application is placed in a deep well. During this process, the protective cover 2 and the protective end cover will protect the pump body 1. After the pump body 1 is placed in the deep well, the pump body 1 is powered on so that the motor of the pump body 1 starts and the water pump of the pump body 1 starts. After the water pump of the pump body 1 starts, the external water will be drawn into the water inlet chamber 21 through multiple water inlet holes 23, and then the water will be drawn into the pump body 1 and pumped to the outside.

[0048] When water enters the water inlet cavity 21, the plurality of water inlet holes 23 will first filter out larger particle impurities, and when water is pumped from the water inlet cavity 21 into the pump body 1, the filter screen 3 will filter the water with higher precision. Therefore, impurities will remain on the filter screen 3.

[0049] When water is sucked into the water pump of the pump body 1, the water drives the plurality of blades 72 to rotate. The plurality of blades 72 rotate and drive the scraper 73 to rotate, so that the scraper 73 scrapes the impurities on the filter screen 3 through the first sewage outlet 24 into the receiving ring groove 51, which facilitates the collection of impurities and prevents the accumulation of impurities on the filter screen 3, thereby affecting the filtering performance of the filter screen 3.

[0050] When the motor of the pump body 1 is started, the rotor of the motor of the pump body 1 will rotate and drive the rotating shaft 84 to rotate. The rotation of the rotating shaft 84 will drive the rotating wheel 85 to rotate. The rotation of the rotating wheel 85 will drive the gear 1 83 to rotate through multiple meshing teeth 86. The rotation of the gear 1 83 will drive the reciprocating screw 82 to rotate. When the reciprocating screw 82 rotates, it will drive the slider 81 to move downward and perform reciprocating motion.

[0051] When the slider 81 moves downward, it will collide with the two limit blocks 62 and move downward with the two limit blocks 62. When the two limit blocks 62 move downward, they will move the tubular member 5 toward the bottom wall of the slide groove 41. When the tubular member 5 moves toward the bottom wall of the slide groove 41, the spring 61 will be constantly compressed.

[0052] During the downward movement of the tubular member 5, the accommodating annular groove 51 will no longer be connected to the first sewage outlets 24, and the tubular member 5 will block the first sewage outlets 24. At this time, the second sewage outlets 52 are not yet connected to the third sewage outlets 42, and the third sewage outlets 42 are still located on the side of the second sewage outlets 52 close to the spring 61.

[0053] The slider 81 then continues to move downward with the tubular member 5, and the plurality of second sewage outlets 52 are respectively connected to the plurality of third sewage outlets 42, and the tubular member 5 no longer blocks the plurality of one-way valves 25. Clean water filtered by the filter screen 3 flows into the receiving annular groove 51 through the one-way valve 25 and flushes the impurities in the receiving annular groove 51 out of the plurality of third sewage outlets 42, thereby flushing the impurities in the receiving annular groove 51.

[0054] When the slider 81 slides to the lowest position, the two limit blocks 62 will be pressed against the side wall of the avoidance groove 26 away from the water inlet chamber 21. At this time, the multiple second sewage outlets 52 are completely connected to the multiple third sewage outlets 42, and the tubular member 5 still blocks the multiple first sewage outlets 24. Then the slider 81 slides toward the side of the water inlet chamber 21 to reset. During this process, the slider 81 no longer presses the two limit blocks 62. The spring 61 will rebound and push the tubular member 5 and the limit blocks 62 to move synchronously with the slider 81. During the upward movement of the tubular member 5, the tubular member 5 will first re-block the multiple one-way valves 25, and at the same time, the multiple second sewage outlets 52 are no longer connected to the multiple third sewage outlets 42. At this time, the accommodating annular groove 51 has not yet connected to the multiple first sewage outlets 24.

[0055] As the tubular member 5 continues to move upward, the receiving annular groove 51 will be connected to the multiple first sewage outlets 24. Finally, when the stopper 62 moves to the side wall of the two avoidance grooves 26 close to the water inlet chamber 21, the tubular member 5 stops moving. At this time, the receiving annular groove 51 will be completely connected to the multiple first sewage outlets 24, and can collect the impurities scraped off the filter screen 3 by the scraper 73. The slider 81 continues to move upward, and after moving to the position closest to the water inlet chamber 21, it will move close to the two stopper blocks 62 to prepare for the next round of impurity discharge.

[0056] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A deep well pump, comprising a pump body (1), characterized in that: A protective cover (2) is installed on the outside of the pump body (1), and a water inlet chamber (21) and an installation chamber (22) are provided in the protective cover (2). The motor of the pump body (1) is located in the installation chamber (22), and the water pump of the pump body (1) is located in the water inlet chamber (21). A plurality of water inlet holes (23) are provided on the wall of the water inlet chamber (21) away from the pump body (1). An annular filter screen (3) is also provided in the water inlet chamber (21), and the filter screen (3) is located between the plurality of water inlet holes (23) and the water inlet (11) of the pump body (1). The bottom of the protective cover (2) is wrapped with a protective end cover (4); the end with a smaller diameter of the filter screen (3) is installed on the wall of the water inlet chamber (21) close to the pump body (1), and the filter screen (3) is provided on the wall of the water inlet chamber (21) close to the pump body (1). ) is installed on the wall of the water inlet chamber (21) away from the pump body (1); the distance between the end of the filter screen (3) with a smaller diameter and the installation chamber (22) is smaller than the distance between the end of the filter screen (3) with a larger diameter and the installation chamber (22); a plurality of first sewage outlets (24) are provided on the side wall of the water inlet chamber (21); the plurality of first sewage outlets (24) are flush with the end of the filter screen (3) with a larger diameter; an annular sliding groove (41) is provided on the protective end cover (4); a tubular member (5) is slidably connected in the sliding groove (41); a driving mechanism (6) for driving the tubular member (5) to slide is also provided on the protective cover (2); a receiving annular groove (51) is provided on the inner wall of the tubular member (5); the receiving annular groove ( A plurality of second sewage outlets (52) are provided on the side wall of the chute (41), a plurality of third sewage outlets (42) for communicating with the second sewage outlets (52) are provided on the side wall of the chute (41), a distance from the bottom wall of the accommodating annular groove (51) to the top wall of the third sewage outlet (42) is h1, a distance from the top wall of the accommodating annular groove (51) to the bottom wall of the first sewage outlet (24) is h2, in an initial state, the plurality of first sewage outlets (24) are all connected to the accommodating annular groove (51), the inner wall of the chute (41) blocks the plurality of second sewage outlets (52), the plurality of third sewage outlets (42) are located on a side of the plurality of second sewage outlets (52) close to the bottom wall of the chute (41), h1>h2; the water inlet chamber (21) is close to the pump body ( A rotating ring (71) is rotatably connected to the inner wall of the water inlet chamber (21), the rotating ring (71) is located on the side of the filter screen (3) away from the installation chamber (22), and a plurality of fan blades (72) are provided on the rotating ring (71), and a scraper (73) is provided at the bottom of the plurality of fan blades (72), and the scraper (73) is in contact with the filter screen (3); a plurality of one-way valves (25) are embedded on the inner wall of the water inlet chamber (21), and the plurality of one-way valves (25) are connected to the water inlet chamber (21) and the chute (41), and the water outlets of the plurality of one-way valves (25) are respectively opposite to the plurality of third sewage outlets (42), and the one-way valves (25) only allow water to flow from the water inlet chamber (21) into the chute (41), and in the initial state, the tubular member (5) blocks the plurality of one-way valves (25).

2. A deep well pump according to claim 1, characterized in that: An escape groove (26) is provided on a side wall of the installation cavity (22) away from the pump body (1), and the escape groove (26) is connected to the slide groove (41). The driving mechanism (6) comprises a spring (61) arranged in the slide groove (41), a limit block (62) arranged on the inner wall of the tubular member (5), and a driving part (8) driving the tubular member (5) to move toward the bottom wall of the slide groove (41). The limit block (62) passes through the escape groove (26) and extends into the installation cavity (22). In the cavity (22), one end of the spring (61) abuts against the end of the tubular member (5), and the other end of the spring (61) abuts against the bottom wall of the slide groove (41). The spring (61) is always in a compressed state. The spring (61) drives the tubular member (5) to move in a direction away from the bottom wall of the slide groove (41). In the initial state, the limit block (62) abuts against a side wall of the avoidance groove (26) close to the water inlet cavity (21).

3. A deep well pump according to claim 2, characterized in that: The driving part (8) comprises a slider (81) slidably connected to the installation cavity (22), a reciprocating screw (82) rotatably connected to the installation cavity (22), a gear 1 (83) provided on the reciprocating screw (82), a rotating shaft (84) connected to the motor rotor of the pump body (1), a rotating wheel (85) provided on the rotating shaft (84), and a plurality of meshing teeth (86) provided on the rotating wheel (85); the slider (81) is threadedly connected to the reciprocating screw (82); the plurality of meshing teeth (86) are used to mesh with the gear 1 (83); the limit block (62) is located on a side of the slider (81) away from the water inlet cavity (21); and the limit block (62) is located on the movement path of the slider (81).

4. A deep well pump according to claim 1, characterized in that: A plurality of reinforcing rods (27) are arranged in the water inlet chamber (21), one end of each reinforcing rod (27) being connected to a side wall of the water inlet chamber (21) away from the pump body (1), and the other end of each reinforcing rod (27) being connected to a side wall of the water inlet chamber (21) close to the pump body (1).

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