Self-suction water pump with water inlet filtering function

Abstract

The self-suction water pump solves the problems that a filter screen is not easy to clean after being blocked, and follow-up filtering is influenced, the self-suction water pump comprises a pump box and a base, a drainage pipe is installed on the front face of the pump box, a water inlet filtering assembly is installed at the top end of the pump box, and the water inlet filtering assembly comprises a filtering box arranged above the pump box; an upper pipeline is mounted at the top end of the filter box, a lower pipeline is mounted at the bottom end of the filter box, the bottom end of the lower pipeline is fixedly mounted at the top end of the pump box, a circular groove is formed in the filter box, and an internal filter part is mounted in the circular groove; in the working process, a filter plate is installed in an upper through groove, when the upper through groove is located above a middle groove, the upper through groove communicates with an upper pipeline, so that impurities in water are filtered, and when the upper through groove rotates to the side facing an impurity discharging pipe along with a rotating block, the impurities on the filter plate can be backflushed out from the impurity discharging pipe; the subsequent filtering use is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of self-priming water pumps, and in particular relates to a self-priming water pump with water inlet filtering. Background Art

[0002] A self-priming water pump is a hydraulic machine used for pumping water. It is generally composed of a pump box, an inlet pipe, an outlet pipe, a drive motor, and an impeller in the pump box. The impeller is its core component, which generates centrifugal force through high-speed rotation. When the impeller rotates, the liquid in the impeller flow channel is thrown to the surroundings under the action of centrifugal force, forming a low-pressure area at the center of the impeller. During the self-priming process, the pump body must first be filled with water or the air must be removed by other means. After the impeller starts to rotate, the air in the pump body is discharged under the action of centrifugal force, so that a certain degree of vacuum is formed at the suction port. The external atmospheric pressure will press the water into the pump body through the suction pipe. Under the continuous push of the impeller, the water is discharged from the outlet. In order to filter the water flow during the water flow process and avoid clogging inside the pump box, a filter is generally installed inside the inlet pipe, but there are the following defects:

[0003] Since the filter inside the water inlet pipe is not easy to remove, when there are many impurities being filtered, the filter becomes clogged and difficult to clean, thus affecting subsequent filtration. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a self-priming water pump with water inlet filtration, which effectively solves the problem that the filter screen is difficult to clean after being blocked, affecting subsequent filtration.

[0005] To achieve the above object, the present invention provides the following technical solution: a self-priming water pump with water inlet filtration, comprising a pump box and a base, a drain pipe is installed on the front of the pump box, and a water inlet filtration assembly is installed on the top of the pump box;

[0006] The water inlet filter assembly includes a filter box arranged above the pump box, an upper pipe is installed at the top of the filter box, a lower pipe is installed at the bottom of the filter box, the bottom end of the lower pipe is fixedly installed at the top of the pump box, a circular groove is arranged inside the filter box, and an internal filter is installed inside the circular groove;

[0007] The internal filter element includes a rotating block rotatably installed inside the circular groove, the outer wall of the rotating block is in close contact with the inner wall of the circular groove, a middle groove is coaxially opened inside the rotating block, an upper through groove is opened at the top of the middle groove, a lower through groove is opened at the bottom of the middle groove, a filter plate is installed inside the upper through groove, cleaning recoil parts are installed on both sides of the middle groove, and a closed extrusion part is installed inside the middle groove.

[0008] Preferably, the upper through groove and the lower through groove respectively penetrate to the upper and lower ends of the rotating block, the filter plate is arranged in a hemispherical shell shape, the filter plate is arranged to bulge upward, the front side of the rotating block is coaxially connected to the output shaft of the driving motor, the driving motor is fixedly installed on the front side of the filter box, and the middle groove penetrates to the back side of the rotating block.

[0009] Preferably, a debris discharge pipe is installed on one side of the filter box, and the debris discharge pipe is used to discharge debris, and a side pusher is installed on the other side of the filter box.

[0010] Preferably, the cleaning recoil component includes a water storage square trough opened on the side of the middle trough away from the impurity discharge pipe, and slide grooves are symmetrically opened on the upper and lower inner walls of the water storage square trough. Two pressure plates are symmetrically installed inside the water storage square trough, and sliding blocks are symmetrically installed at the upper and lower ends of the pressure plates. The sliding blocks are slidably connected to the slide grooves. A middle block is arranged between the two pressure plates, and connecting rods are symmetrically hingedly installed on both sides of the middle block, and the other ends of the two connecting rods are respectively hinged to the two pressure plates.

[0011] Preferably, a movable groove is provided inside the rotating block on the front side of the water storage square groove, a movable piston is movably installed inside the movable groove, a pressure rod is installed on the side of the movable piston close to the water storage square groove, the pressure rod penetrates into the inside of the water storage square groove, and one end of the pressure rod is fixedly connected to a pressure plate on one side, a return spring is installed on the side of the movable piston close to the water storage square groove, and one end of the return spring is fixedly connected to one end of the movable groove close to the water storage square groove.

[0012] Preferably, an air cavity is provided inside the rotating block on the side close to the impurity discharge pipe, an air groove is provided inside the rotating block, both ends of the air groove are respectively connected with the air cavity and the movable groove, an end groove is provided on the side of the air cavity close to the middle groove, a piston plate is movably installed inside the air cavity, a pressure block is installed on the side of the piston plate close to the middle groove, one end of the pressure block is set to an arc surface, the pressure block passes through the end groove and enters into the middle groove, and compression springs are evenly installed on the side of the piston plate away from the pressure block, and one end of the compression spring is fixedly connected to the inner wall of the air cavity.

[0013] Preferably, the closed extrusion member includes a rotating plate installed inside the middle groove, the outer wall of the rotating plate is in close contact with the inner wall of the middle groove, a stopper is installed at the bottom of the front side of the rotating plate, the bottom wall of the stopper is in close contact with the inner wall of the middle groove, an inclined surface is provided on the top of the stopper, the inclined surface is inclined downward at one end close to the impurity discharge pipe, an extrusion block is installed on the top of the inclined surface close to one end of the impurity discharge pipe, the back side of the rotating plate is fixedly connected to the output shaft of the rotating motor, and the rotating motor is fixedly installed on the back side of the filter box.

[0014] Preferably, the side pushing member includes a side tube fixedly mounted on the side of the filter box away from the impurity discharge pipe, the inner diameter of the side tube is the same as the inner diameter of the lower through groove, an extrusion piston is installed inside the side tube, the extrusion piston is fixedly connected to the output end of the cylinder, and the cylinder is fixedly mounted on the end of the side tube.

[0015] Preferably, an impeller is rotatably installed inside the pump box, a water pump motor is provided on the back of the pump box, the output shaft of the water pump motor is fixedly connected to the impeller, the pump box and the water pump motor are both fixedly installed on the top of the base, and a controller is installed on the front of the pump box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) During operation, a filter plate is installed in the upper through groove. When the upper through groove is above the middle groove, the upper through groove is connected with the upper pipe, thereby filtering impurities in the water. When the upper through groove rotates to the side of the impurity discharge pipe along with the rotating block, the impurities on the filter plate can be flushed out from the impurity discharge pipe, which is convenient for subsequent filtering.

[0018] 2) During operation, the stopper can rotate inside the middle tank. When pre-flushing, the stopper closes the lower through tank, so that the water can fill the middle tank and the water storage tank. The stopper rotates toward the water storage tank, and part of the water in the water storage tank is stored in the water storage tank, so as to facilitate the subsequent backwash cleaning of the filter plate;

[0019] 3) During operation, the rotating block is rotated to the corresponding position of the upper through slot and the impurity discharge pipe, and the stopper is rotated to the bottom of the middle slot. On the one hand, the water storage square slot is opened to discharge water, and the stopper generates pressure on the pressure block, pushing the two pressure plates closer to each other to generate pressure on the water. At the same time, the piston is squeezed along the lower through slot into the middle slot, and pressure is generated on the water at the same time, so that the water rushes out from the upper through slot to backwash the filter plate;

[0020] 4) During operation, when the stopper moves to the top of the pressure block, a slope is provided on the top of the stopper, and the slope is inclined downward at one end close to the drainage pipe, thereby guiding the water to facilitate water to rush out of the filter plate for cleaning. At the same time, an extrusion block is provided at one end of the slope close to the drainage pipe, and the extrusion block can generate pressure on the arc surface on the pressure block, which is convenient for squeezing the pressure block and moving the pressure plate to generate pressure on the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a schematic structural diagram of a self-priming water pump with water inlet filtration according to the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the water inlet filter assembly of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the internal filter element of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the cleaning recoil member of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the closed extrusion member of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the side pusher of the present invention.

[0029] In the figure: 1, pump box; 2, base; 3, drain pipe; 4, water pump motor; 5, water inlet filter assembly; 501, filter box; 502, upper pipe; 503, lower pipe; 504, internal filter; 5041, rotating block; 5042, driving motor; 5043, middle groove; 5044, upper through groove; 5045, filter plate; 5046, lower through groove; 505, drainage pipe; 506, side pusher; 5061, side cylinder; 5062, extrusion piston; 5063, cylinder; 507, cleaning recoil piece; 5071, water storage square tank; 5072, Slide groove; 5073, pressure plate; 5074, slider; 5075, middle block; 5076, connecting rod; 5077, movable groove; 5078, movable piston; 5079, pressure rod; 50710, return spring; 50711, air cavity; 50712, air groove; 50713, end groove; 50714, piston plate; 50715, pressure block; 50716, compression spring; 508, closed extrusion piece; 5081, rotating plate; 5082, stop block; 5083, inclined plane; 5084, extrusion block; 5085, rotating motor; 6, controller. DETAILED DESCRIPTION

[0030] 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Depend on Figure 1-6 The present invention relates to a self-priming water pump with water inlet filtration, comprising a pump box 1 and a base 2, a drain pipe 3 is installed on the front of the pump box 1, and a water inlet filter assembly 5 is installed on the top of the pump box 1;

[0032] The water inlet filter assembly 5 includes a filter box 501 disposed above the pump box 1, an upper pipe 502 is installed at the top of the filter box 501, a lower pipe 503 is installed at the bottom of the filter box 501, and the bottom end of the lower pipe 503 is fixedly installed at the top of the pump box 1. A circular groove is provided inside the filter box 501, and an internal filter 504 is installed inside the circular groove. The internal filter 504 includes a rotating block 5041 rotatably installed inside the circular groove. The outer wall is in close contact with the inner wall of the circular groove. A middle groove 5043 is coaxially provided inside the rotating block 5041. An upper through groove 5044 is provided at the top of the middle groove 5043. A lower through groove 5046 is provided at the bottom of the middle groove 5043. A filter plate 5045 is installed inside the upper through groove 5044. Cleaning recoil pieces 507 are installed on both sides of the middle groove 5043. A closed extrusion piece 508 is installed inside the middle groove 5043. The upper through groove 5044 and the lower through groove 5046 are provided. 6 respectively penetrates the upper and lower ends of the rotating block 5041, the filter plate 5045 is set in a hemispherical shell shape, the filter plate 5045 is set to bulge upward, the front of the rotating block 5041 is coaxially connected to the output shaft of the driving motor 5042, the driving motor 5042 is fixedly installed on the front of the filter box 501, the middle groove 5043 penetrates to the back of the rotating block 5041, and a waste pipe 505 is installed on one side of the filter box 501. The waste pipe 505 is used to discharge waste. 1 is provided with a side pusher 506, and a filter plate 5045 is provided in the upper through groove 5044. When the upper through groove 5044 is above the middle groove 5043, the upper through groove 5044 is connected with the upper pipe 502, so as to filter impurities in the water. When the upper through groove 5044 rotates toward the impurity discharge pipe 505 along with the rotating block 5041, the impurities on the filter plate 5045 can be recoiled out from the impurity discharge pipe 505, so as to facilitate subsequent filtering.

[0033] The closed extrusion member 508 includes a rotating plate 5081 installed inside the middle groove 5043, the outer wall of the rotating plate 5081 is in close contact with the inner wall of the middle groove 5043, a stopper 5082 is installed at the bottom of the front side of the rotating plate 5081, the bottom wall of the stopper 5082 is in close contact with the inner wall of the middle groove 5043, a slope 5083 is provided at the top of the stopper 5082, the slope 5083 is tilted downward at one end close to the impurity discharge pipe 505, an extrusion block 5084 is installed at the top of the slope 5083 close to one end of the impurity discharge pipe 505, the back side of the rotating plate 5081 is fixedly connected to the output shaft of the rotating motor 5085, and the rotating motor 5085 is fixedly installed at the back side of the filter box 501.

[0034] The cleaning recoil member 507 includes a water storage square groove 5071 opened on the side of the middle groove 5043 away from the impurity discharge pipe 505, and the block 5082 can rotate inside the middle groove 5043. When flushing water in advance, the block 5082 closes the lower groove 5046, so that the water can fill the middle groove 5043 and the water storage square groove 5071, and the block 5082 rotates toward the water storage square groove 5071 to store part of the water in the water storage square groove 5071 in the water storage square groove 5071, so as to facilitate the subsequent recoil cleaning of the filter plate 5045. The upper and lower inner walls of the water storage square groove 5071 are symmetrically provided with slide grooves 5072, and the inside of the water storage square groove 5071 is symmetrically installed with two pressing plates 5073, and the upper and lower ends of the pressing plate 5073 are symmetrically installed with sliders 5 074, the slider 5074 is slidably connected with the slide groove 5072, a middle block 5075 is arranged between the two pressure plates 5073, and connecting rods 5076 are symmetrically hingedly installed on both sides of the middle block 5075, and the other ends of the two connecting rods 5076 are respectively hinged with the two pressure plates 5073, and a movable groove 5077 is opened inside the rotating block 5041 on the front of the water storage square groove 5071, and a movable piston 5078 is movably installed inside the movable groove 5077, and a pressure rod 5079 is installed on the side of the movable piston 5078 close to the water storage square groove 5071, and the pressure rod 5079 penetrates into the water storage square groove 5071, and one end of the pressure rod 5079 is fixedly connected to the pressure plate 5073 on one side, and the movable piston 5078 is close to the side of the water storage square groove 5071 A return spring 50710 is installed, one end of the return spring 50710 is fixedly connected to one end of the movable groove 5077 near the water storage square groove 5071, an air cavity 50711 is provided inside the rotating block 5041 near the impurity discharge pipe 505, an air groove 50712 is provided inside the rotating block 5041, and both ends of the air groove 50712 are respectively connected with the air cavity 50711 and the movable groove 5077, an end groove 50713 is provided on the side of the air cavity 50711 near the middle groove 5043, a piston plate 50714 is movably installed inside the air cavity 50711, a pressure block 50715 is installed on the side of the piston plate 50714 near the middle groove 5043, one end of the pressure block 50715 is set to an arc surface, and the pressure block 50715 Passing through the end groove 50713 and entering the middle groove 5043, a compression spring 50716 is evenly installed on the side of the piston plate 50714 away from the pressure block 50715, and one end of the compression spring 50716 is fixedly connected to the inner wall of the air cavity 50711. When the stopper 5082 moves to the top of the pressure block 50715, an inclined surface 5083 is arranged on the top of the stopper 5082, and the inclined surface 5083 is inclined downward at one end close to the drainage pipe 505, so as to guide the water, so that the water can rush out from the filter plate 5045 for cleaning. At the same time, an extrusion block 5084 is arranged at one end of the inclined surface 5083 close to the drainage pipe 505, and the extrusion block 5084 can generate pressure on the arc surface on the pressure block 50715, so as to facilitate the extrusion of the pressure block 50715.The pressure plate 5073 moves to generate pressure on the water. The side pusher 506 includes a side tube 5061 fixedly installed on the side of the filter box 501 away from the impurity discharge pipe 505. The inner diameter of the side tube 5061 is the same as the inner diameter of the lower through groove 5046. An extrusion piston 5062 is installed inside the side tube 5061. The extrusion piston 5062 is fixedly connected to the output end of the cylinder 5063. The cylinder 5063 is fixedly installed at the end of the side tube 5061. The rotating block 5041 rotates to the upper through groove 5044 and At the corresponding position of the impurity discharge pipe 505, the stopper 5082 is rotated to the bottom of the middle groove 5043, on the one hand, the water storage square groove 5071 is opened to discharge water, and the stopper 5082 generates pressure on the pressure block 50715, pushing the two pressure plates 5073 close to each other to generate pressure on the water, and at the same time, squeezing the piston 5062 along the lower groove 5046 into the middle groove 5043, and synchronously generating pressure on the water, so that the water rushes out from the upper groove 5044, and backwashes the filter plate 5045.

[0035] An impeller is rotatably installed inside the pump box 1, a water pump motor 4 is arranged on the back of the pump box 1, an output shaft of the water pump motor 4 is fixedly connected to the impeller, the pump box 1 and the water pump motor 4 are both fixedly installed on the top of the base 2, and a controller 6 is installed on the front of the pump box 1.

[0036] Working principle: before using the self-priming water pump, it is necessary to pre-fill water into the pump box 1. When in use, in the original state, the block 5082 is at the bottom of the middle groove 5043, so that the block 5082 closes the lower groove 5046, and water is filled through the filter box 501. Since the block 5082 closes the lower groove 5046, water enters the middle groove 5043 and the water storage square groove 5071. Then, the controller 6 controls the rotating motor 5085 to drive the block 5082 to rotate quickly toward one side of the water storage square groove 5071 to close the water storage square groove 5071, so that part of the water is stored in the water storage square groove 5071, and the other part of the water enters the pump box 1 through the lower groove 5046;

[0037] Then, a hose is installed on the top of the upper pipe 502, and then the end of the hose is inserted into the water source, and the water pump motor 4 is turned on to drive the impeller inside the pump box 1 to rotate, thereby driving the water in the water source to enter the pump box 1 through the upper pipe 502, the upper groove 5044, the middle groove 5043, the lower groove 5046, and the lower pipe 503, and finally pass out from the drain pipe 3. During the circulation process, the water flow continuously passes through the filter plate 5045 in the upper groove 5044 to filter the water flow, wherein the filter plate 5045 is configured to be a hemispherical shell and is configured to bulge upward, so that when filtering, impurities can move downward along the inclined top wall of the filter plate 5045 to avoid complete blockage of the filter hole;

[0038] After the water source is exhausted, the filter plate 5045 needs to be cleaned. At this time, the controller 6 controls the driving motor 5042 and the rotating motor 5085 to start, so that the rotating block 5041 and the stopper 5082 rotate synchronously toward the side of the impurity discharge pipe 505, so that the upper through groove 5044 corresponds to the impurity discharge pipe 505, the side tube 5061 corresponds to the lower through groove 5046, and the water storage square groove 5071 moves to the top of the middle groove 5043, and the pressure block 50715 is located at the bottom of the middle groove 5043;

[0039] Then the controller 6 controls the rotating motor 5085 to drive the rotating plate 5081 to rotate until the stopper 5082 moves to the bottom of the middle groove 5043. During the movement, the extrusion block 5084 on the stopper 5082 generates pressure on the arc surface on the pressure block 50715, pushing the pressure block 50715 to move downward, and then pushes the air inside the air cavity 50711 into the air cavity 50711 through the piston plate 50714, and generates pressure on the movable piston 5078, pushing the pressure rod 5079 to move toward the inside of the water storage square groove 5071. At the same time, since the two pressure plates 5073 are slidably connected with the slide groove 5072, and the middle block 5075 is arranged between the two pressure plates 5073, and the connecting rod 5076 is installed between the middle block 5075 and the pressure plate 5073, the two pressure plates 5073 are close to each other.

[0040] During the downward movement of the stopper 5082, the water storage square groove 5071 is opened, so that the water in the water storage square groove 5071 flows downward, and at the same time, the two pressure plates 5073 approach each other to squeeze the water, so that thrust is generated on the water. Since the stopper 5082 moves to the bottom end of the middle groove 5043, an inclined surface 5083 is provided on the top of the stopper 5082, and the inclined surface 5083 is inclined downward close to the side of the drainage pipe 505 to guide the water. At the same time, the cylinder 5063 is opened to drive the extrusion piston 5062 to enter the middle groove 5043 along the lower groove 5046, further squeezing the water, thereby pushing the water out from the upper groove 5044 and the drainage pipe 505, and backwashing the impurities on the filter plate 5045, so that the impurities are discharged into the drainage pipe 505, thereby facilitating the cleaning of the filter plate 5045 and facilitating subsequent use.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-priming water pump with water inlet filtration, comprising a pump box (1) and a base (2), characterized in that: A drainage pipe (3) is installed on the front of the pump box (1), and a water inlet filter assembly (5) is installed on the top of the pump box (1); The water inlet filter assembly (5) comprises a filter box (501) arranged above the pump box (1); an upper pipe (502) is installed at the top end of the filter box (501); a lower pipe (503) is installed at the bottom end of the filter box (501); the bottom end of the lower pipe (503) is fixedly installed at the top end of the pump box (1); a circular groove is arranged inside the filter box (501); an internal filter element (504) is installed inside the circular groove; The internal filter element (504) comprises a rotating block (5041) rotatably mounted inside a circular groove, the outer wall of the rotating block (5041) is in close contact with the inner wall of the circular groove, a middle groove (5043) is coaxially provided inside the rotating block (5041), an upper through groove (5044) is provided at the top end of the middle groove (5043), a lower through groove (5046) is provided at the bottom end of the middle groove (5043), a filter plate (5045) is installed inside the upper through groove (5044), cleaning recoil elements (507) are installed on both sides of the middle groove (5043), and a closed extrusion element (508) is installed inside the middle groove (5043).

2. A self-priming water pump with water inlet filtration according to claim 1, characterized in that: The upper through groove (5044) and the lower through groove (5046) respectively penetrate to the upper and lower ends of the rotating block (5041); the filter plate (5045) is arranged in a hemispherical shell shape; the filter plate (5045) is arranged to protrude upward; the front side of the rotating block (5041) is coaxially connected to the output shaft of the driving motor (5042); the driving motor (5042) is fixedly installed on the front side of the filter box (501); and the middle groove (5043) penetrates to the back side of the rotating block (5041).

3. A self-priming water pump with water inlet filtration according to claim 1, characterized in that: A debris discharge pipe (505) is installed on one side of the filter box (501), and the debris discharge pipe (505) is used to discharge debris. A side pusher (506) is installed on the other side of the filter box (501).

4. A self-priming water pump with water inlet filtration according to claim 1, characterized in that: The cleaning recoil member (507) comprises a water storage square trough (5071) provided on a side of the middle trough (5043) away from the impurity discharge pipe (505), and slide grooves (5072) are symmetrically provided on the upper and lower inner walls of the water storage square trough (5071). Two pressing plates (5073) are symmetrically installed inside the water storage square trough (5071), and sliding blocks (5074) are symmetrically installed at the upper and lower ends of the pressing plates (5073). The sliding blocks (5074) are slidably connected to the slide grooves (5072), and a middle block (5075) is provided between the two pressing plates (5073). Connecting rods (5076) are symmetrically hingedly installed on both sides of the middle block (5075), and the other ends of the two connecting rods (5076) are hingedly connected to the two pressing plates (5073) respectively.

5. A self-priming water pump with water inlet filtration according to claim 4, characterized in that: The interior of the rotating block (5041) is provided with a movable groove (5077) located on the front side of the water storage square groove (5071), and a movable piston (5078) is movably installed inside the movable groove (5077). A pressure rod (5079) is installed on the side of the movable piston (5078) close to the water storage square groove (5071). The pressure rod (5079) penetrates into the interior of the water storage square groove (5071), and one end of the pressure rod (5079) is fixedly connected to a pressure plate (5073) on one side. A return spring (50710) is installed on the side of the movable piston (5078) close to the water storage square groove (5071), and one end of the return spring (50710) is fixedly connected to one end of the movable groove (5077) close to the water storage square groove (5071).

6. A self-priming water pump with water inlet filtration according to claim 5, characterized in that: The rotating block (5041) has an air cavity (50711) formed inside the side close to the impurity discharge pipe (505), and an air groove (50712) formed inside the rotating block (5041). The two ends of the air groove (50712) are respectively connected to the air cavity (50711) and the movable groove (5077). The air cavity (50711) has an end groove (50713) formed on the side close to the middle groove (5043). A piston plate (50714) is movably installed inside the air cavity (50711). A pressure block (50715) is installed on the side of the plug plate (50714) close to the middle groove (5043), one end of the pressure block (50715) is set as an arc surface, the pressure block (50715) passes through the end groove (50713) and enters the middle groove (5043), and a compression spring (50716) is evenly installed on the side of the piston plate (50714) away from the pressure block (50715), one end of the compression spring (50716) is fixedly connected to the inner wall of the air cavity (50711).

7. A self-priming water pump with water inlet filtration according to claim 1, characterized in that: The closed extrusion member (508) comprises a rotating plate (5081) installed inside the middle groove (5043), the outer wall of the rotating plate (5081) is in close contact with the inner wall of the middle groove (5043), a stopper (5082) is installed at the bottom of the front face of the rotating plate (5081), the bottom wall of the stopper (5082) is in close contact with the inner wall of the middle groove (5043), an inclined surface (5083) is provided at the top of the stopper (5082), the inclined surface (5083) is inclined downward at one end close to the impurity discharge pipe (505), an extrusion block (5084) is installed at one end of the inclined surface (5083) close to the impurity discharge pipe (505), the back side of the rotating plate (5081) is fixedly connected to the output shaft of the rotating motor (5085), and the rotating motor (5085) is fixedly installed at the back side of the filter box (501).

8. A self-priming water pump with water inlet filtration according to claim 1, characterized in that: The side pusher (506) comprises a side tube (5061) fixedly mounted on a side of the filter box (501) away from the impurity discharge pipe (505); the inner diameter of the side tube (5061) is the same as the inner diameter of the lower through groove (5046); an extrusion piston (5062) is mounted inside the side tube (5061); the extrusion piston (5062) is fixedly connected to the output end of the cylinder (5063); and the cylinder (5063) is fixedly mounted on the end of the side tube (5061).

9. A self-priming water pump with water inlet filtration according to claim 1, characterized in that: An impeller is rotatably mounted inside the pump box (1); a water pump motor (4) is arranged on the back of the pump box (1); an output shaft of the water pump motor (4) is fixedly connected to the impeller; the pump box (1) and the water pump motor (4) are both fixedly mounted on the top of the base (2); and a controller (6) is mounted on the front of the pump box (1).

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