Water inlet filter structure for preventing winding of pump

Abstract

The application provides a water inlet filtering structure for preventing winding of a pump, and belongs to the technical field of pumps. The water inlet filtering structure comprises a pump body and a guide water pipe. An impeller is installed in the pump body. The lower end of the pump body is a water inlet. The water inlet is connected with the upper end of the guide water pipe. The lower end of the guide water pipe is provided with a crushing chamber. A crushing wheel shaft is rotatably installed in the crushing chamber. A crushing wheel that rotates synchronously is installed on the crushing wheel shaft. The edge of the fan blade of the crushing wheel is a knife edge structure. A driving groove is formed in the side wall of the crushing chamber. A reciprocating screw rod that is parallel to the crushing wheel shaft penetrates through the driving groove and is rotatably connected with the crushing chamber. The reciprocating screw rod rotates with the crushing wheel shaft. A screw rod nut is installed on the reciprocating screw rod. The screw rod nut is slidably connected with the driving groove. A cutting blade is installed on the screw rod nut. The cutting blade is located outside the driving groove and is attached to the edge of the fan blade of the crushing wheel. The water inlet filtering structure for preventing winding of the pump can effectively prevent sundries from winding the impeller and ensure the normal operation of the pump body.

Description

Technical Field

[0001] This invention belongs to the technical field of pumps, and specifically discloses an anti-winding pump inlet filter structure. Background Technology

[0002] Self-coupling sewage pumps are used in environments with deep water levels, where manual disassembly and assembly are not required, and where automatic docking and sealing are necessary. Their core feature is that no water entry or bolt connection is required throughout the process. The submersible sewage pump is lowered along two vertical guide rails, and it automatically and precisely docks and seals itself using its own weight and the inclined guide. When lifting, it is simply lifted up and automatically disengages.

[0003] The following problems with existing autocoupling sewage pumps need to be addressed: 1. The only way to break up debris is to adjust the structure of the impeller. If long debris in the water enters the pump casing directly, the impeller will become entangled and cannot be broken up in time, which will easily affect the operation of the pump. 2. When water is drawn into the pump casing through the inlet, the filter structure can prevent large debris (fibers, plastic bags) from entering the pump casing and causing blockage. However, the existing filter structure can only block debris but cannot remove it. When there is a lot of debris, the pump's suction will attract the debris to accumulate, causing the debris to pile up more and more, affecting the operation of the pump. Summary of the Invention

[0004] This invention provides an anti-winding pump inlet filter structure, which solves at least one of the above-mentioned technical problems.

[0005] The aforementioned anti-entanglement pump inlet filter structure includes a pump body and a guide water pipe. An impeller is installed inside the pump body, and the lower end of the pump body is the water inlet, which is connected to the upper end of the guide water pipe. A crushing chamber is provided at the lower end of the guide water pipe, and a crushing wheel shaft is rotatably installed inside the crushing chamber. A synchronously rotating crushing wheel is installed on the crushing wheel shaft, and the edge of the crushing wheel blade has a blade structure. A drive groove is opened on the side wall of the crushing chamber, and a reciprocating screw parallel to the crushing wheel shaft passes through the drive groove and is rotatably connected to the crushing chamber. The reciprocating screw rotates with the crushing wheel shaft. A screw nut is installed on the reciprocating screw, and the screw nut is slidably connected to the drive groove. A cutting blade is installed on the screw nut, and the cutting blade is located outside the drive groove and in contact with the edge of the crushing wheel blade.

[0006] In the aforementioned anti-entanglement pump inlet filter structure, a first linkage gear that rotates synchronously is installed on the crushing wheel shaft; a second linkage gear that rotates synchronously is installed on the reciprocating screw; the first linkage gear and the second linkage gear mesh and transmit power.

[0007] In the aforementioned anti-winding pump inlet filter structure, anti-fouling flaps are installed on the upper and lower sides of the drive groove, and the anti-fouling flaps fit in close contact with the lead screw nut and the cutting blade.

[0008] In the aforementioned anti-entanglement pump inlet filter structure, the crushing wheel shaft is horizontally positioned; a crushing blade shaft is rotatably installed inside the water guide pipe, the crushing blade shaft is vertically positioned, and a synchronously rotating crushing blade is installed on the crushing blade shaft.

[0009] In the aforementioned anti-entanglement pump inlet filter structure, a stabilizer is installed on the crusher shaft, and the stabilizer is fixed to the inner wall of the water pipe.

[0010] In the aforementioned anti-entanglement pump inlet filter structure, the lower end of the crushing chamber is connected to an inlet pipe, the lower end of the inlet pipe is connected to an inlet filter pipe, and a filter structure is installed in the inlet filter pipe.

[0011] In the aforementioned anti-winding pump inlet filter structure, a docking base is provided on the outer side of the lower end of the inlet pipe. A toothed ring is rotatably fitted on the docking base, and a mounting bracket is installed on the toothed ring. A cleaning blade is installed on the mounting bracket. The cleaning blade has an L-shaped structure, including a vertical beam and a horizontal blade. The vertical beam is connected to the mounting bracket, and the horizontal blade is in contact with the lower end of the inlet filter pipe. A drive gear is vertically meshed with the toothed ring, and the drive gear rotates synchronously with the driven wheel through a guide shaft. The first linkage gear and the second linkage gear are driven by a transmission gear. The axle of the transmission gear rotates through the crushing chamber, and a synchronously rotating drive wheel is installed on the shaft section outside the crushing chamber. The drive wheel and the driven wheel are connected by a transmission belt.

[0012] In the aforementioned anti-winding pump inlet filter structure, a sleeve ring is installed on the outer side of the upper end of the inlet filter pipe; a sleeve groove is provided on the vertical beam of the cleaning blade, and the sleeve groove and the sleeve ring are slidably nested together.

[0013] In the above-mentioned anti-entanglement pump inlet filter structure, two sets of crushing wheels are symmetrically arranged, and the blades of both sets of crushing wheels are set as arc-shaped blades. The transmission gear corresponding to one set of crushing wheels is connected to the drive wheel.

[0014] In the aforementioned anti-winding pump inlet filter structure, a protective cover base is installed at the corresponding positions of the transmission belt and the drive gear. A first protective cover and a second protective cover are respectively provided on both sides of the protective cover base. The protective cover base, the first protective cover and the second protective cover are connected to the docking base, enclosing the toothed ring and the sleeve ring inside. Extended support legs are installed on the first protective cover and the second protective cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects.

[0016] Firstly, the water flow driven by the pump body during operation causes the crushing wheel to rotate. When long strip-shaped debris enters the crushing chamber, the crushing wheel can cut and crush it. The cut and crushed debris enters the pump body with the water flow, which can effectively prevent it from getting tangled in the impeller and ensure the normal operation of the pump body.

[0017] Secondly, when the reciprocating screw rotates with the crushing wheel shaft, the screw nut moves smoothly back and forth on it. The cutting blade is installed on the reciprocating screw through the screw nut, which enables the reciprocating movement of the cutting blade. The cutting blade is attached to the edge of the crushing wheel blade. If long strips of debris are wrapped around the crushing wheel, they will be cut directly by the cutting blade. The cut debris cannot be wrapped around the impeller when it runs, which can further ensure the stable operation of the pump body.

[0018] Third, the horizontal blade of the cleaning blade is in contact with the lower end of the inlet filter pipe. The cleaning blade can rotate and clean by driving the gear ring through the drive gear, which avoids the accumulation of debris at the lower end of the inlet filter pipe and ensures that the inlet filter pipe can supply water fully and stably. The first protective cover, the second protective cover and the protective cover base protect the rotating gear ring and the transmission belt, and also protect the mounting point of the cleaning blade. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the pump inlet filter to prevent entanglement; Figure 2 This is a schematic diagram of the installation of the protective cover; Figure 3 This is a schematic diagram of the installation of the water pipe and pump body. Figure 4 This is a schematic diagram showing the installation of the water inlet pipe and the water inlet filter pipe. Figure 5 A schematic diagram showing the installation of the cleaning blade and the water inlet filter pipe; Figure 6 for Figure 5 Enlarged view of section A; Figure 7 This is a schematic diagram of the internal structure of the crushing chamber; Figure 8 This is a schematic diagram showing the connection between the first linkage gear and the transmission gear. Figure 9 This is a schematic diagram of the installation of the breaker blade; Figure 10 for Figure 9 Enlarged view of section B; Figure 11 This is a diagram showing the installation of the cutting blade.

[0021] In the diagram: 1. Pump body; 11. Outlet; 12. Impeller; 13. First bolt; 2. Water pipe; 21. Crushing chamber; 211. Drive slot; 212. Anti-fouling flap; 22. Water inlet pipe; 23. Connecting base; 24. Second bolt; 25. Gear ring; 251. Mounting bracket; 252. Third bolt; 253. Cleaning blade; 254. Sleeve slot; 26. Drive gear; 27. Driven wheel; 28. Transmission belt; 3. Inlet filter pipe; 31. Connecting ring; 4. Protective cover base; 41. First protective cover; 42. Second protective cover; 43. Extended support legs; 5. Crushing wheel; 51. Crushing wheel shaft; 52. First linkage gear; 53. Second linkage gear; 54. Reciprocating lead screw; 55. Lead screw nut; 56. Cutting blade; 57. Transmission gear; 58. Drive wheel; 6. Crushing blade; 61. Crushing blade shaft; 62. Stabilizer. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figure 1 , Figure 5 As shown, this embodiment provides an anti-tangling pump inlet filter structure, including a pump body 1 and a water guide pipe 2; an impeller 12 is installed inside the pump body 1, and an outlet 11 is opened in the horizontal direction close to the impeller 12 in the pump body 1. The lower end of the pump body 1 is the water inlet. The impeller 12 draws in water along the axial direction of the pump body 1, and then throws it out along the radial direction of the outlet 11 to complete the energy conversion. First bolts 13 are evenly distributed on the edge of the water inlet. The water inlet is connected to the upper end of the water guide pipe 2 through the first bolts 13, realizing the quick assembly between the water guide pipe 2 and the pump body 1, and facilitating the maintenance of the space inside the water guide pipe 2.

[0024] like Figure 1 , Figure 5 , Figure 7 , Figures 9-11As shown, a crushing chamber 21 is provided at the lower end of the water pipe 2. A crushing wheel shaft 51 is rotatably installed inside the crushing chamber 21, and a synchronously rotating crushing wheel 5 is installed on the crushing wheel shaft 51. The blade edge of the crushing wheel 5 has a blade structure. A drive groove 211 is opened on the side wall of the crushing chamber 21. A reciprocating screw 54 parallel to the crushing wheel shaft 51 passes through the drive groove 211 and is rotatably connected to the crushing chamber 21. The reciprocating screw 54 rotates with the crushing wheel shaft 51. A screw nut 55 is installed on the reciprocating screw 54. The screw nut 55 is slidably connected to the drive groove 211. A cutting blade 56 is installed on the screw nut 55. The cutting blade 56 is located outside the drive groove 211 and is in contact with the blade edge of the crushing wheel 5. In this embodiment, the screw nut 55 and the cutting blade 56 are designed as a single unit.

[0025] After the pump body 1 is turned on, the impeller 12 rotates, driving water flow into the crushing chamber 21. The self-driving force of the water flow drives the crushing wheel 5 to rotate within the crushing chamber 21. Simultaneously, the crushing wheel shaft 51 at the center of the crushing wheel 5 rotates. When long, strip-shaped debris enters the crushing chamber 21, the crushing wheel 5 can cut and crush it. The cut and crushed debris enters the pump body 1 with the water flow, effectively preventing it from entangled in the impeller 12 and ensuring the normal operation of the pump body 1. As the reciprocating screw 54 rotates with the crushing wheel shaft 51, the screw nut 55 moves smoothly back and forth on it. The cutting blade 56 is installed on the reciprocating screw 54 via the screw nut 55, enabling the reciprocating movement of the cutting blade 56. The cutting blade 56 is attached to the edge of the blade of the crushing wheel 5. If long, strip-shaped debris is entangled in the crushing wheel 5, it is directly cut by the cutting blade 56. The cut debris cannot entangle when the impeller 12 is running, further ensuring the stable operation of the pump body 1.

[0026] like Figure 7 , Figures 9-11 As shown, a first linkage gear 52 that rotates synchronously is installed on the crushing wheel shaft 51; a second linkage gear 53 that rotates synchronously is installed on the reciprocating screw 54; in this embodiment, the second linkage gear 53 and the reciprocating screw 54 are designed as a single unit; the first linkage gear 52 and the second linkage gear 53 mesh and drive each other, so that the reciprocating screw 54 can rotate with the crushing wheel shaft 51.

[0027] like Figure 9 , Figure 10 As shown, anti-fouling flaps 212 are installed on the upper and lower sides of the drive groove 211. The anti-fouling flaps 212 are in contact with the lead screw nut 55 and the cutting blade 56. The anti-fouling flaps 212 cover the moving point of the cutting blade 56 to prevent debris from entering the drive groove 211 and maintain the cleanliness of the drive groove 211.

[0028] like Figure 3 , Figure 9As shown, the crushing wheel shaft 51 is horizontally positioned; a crushing blade shaft 61 is rotatably installed inside the water guide pipe 2. The crushing blade shaft 61 is vertically positioned, and multiple sets of synchronously rotating crushing blades 6 are installed on the crushing blade shaft 61. The crushing blades 6 rotate rapidly as water is pumped in, performing secondary crushing on the incoming debris.

[0029] like Figure 9 As shown, a stabilizer 62 is installed on the crusher shaft 61. The stabilizer 62 is fixed to the inner wall of the water pipe 2 to ensure that the crusher 6 is more stable when rotating on the crusher shaft 61.

[0030] like Figure 4 As shown, the lower end of the crushing chamber 21 is connected to a water inlet pipe 22. A docking base 23 is provided on the outer side of the lower end of the water inlet pipe 22. The docking base 23 is connected to the upper end of the water inlet filter pipe 3 by a second bolt 24, which facilitates the disassembly of the water inlet filter pipe 3 and the water inlet pipe 22 for inspection or cleaning. The water inlet filter pipe 3 is equipped with a filter structure (such as a filter screen, filter cotton, etc.).

[0031] like Figures 4-8 As shown, a toothed ring 25 is rotatably mounted on the docking base 23 via a waterproof sealed bearing structure. A mounting bracket 251 is installed on the toothed ring 25, and a cleaning blade 253 is installed on the mounting bracket 251. The cleaning blade 253 has an L-shaped structure, including a vertical beam and a horizontal blade. The vertical beam is connected to the mounting bracket 251 by a third bolt 252. The cleaning blade 253 can be quickly assembled onto the mounting bracket 251 by the third bolt 252, allowing for quick replacement of the cleaning blade 253 after damage. The horizontal blade is in contact with the lower end of the water inlet filter pipe 3. A drive gear 26 is vertically meshed with the toothed ring 25. The drive gear 26 rotates synchronously with the driven wheel 27 via an integrally designed guide shaft. The first linkage gear 52 and the second linkage gear 53 are driven by one or more transmission gears 57. The axle of the transmission gear 57 rotates through the crushing chamber 21. A synchronously rotating drive wheel 58 is installed on the shaft section outside the crushing chamber 21. The drive wheel 58 and the driven wheel 27 are connected by a transmission belt 28. If there are multiple transmission gears 57, select one of them to install the drive wheel 58.

[0032] When the transmission gear 57 rotates, the drive wheel 58 rotates synchronously, which drives the driven wheel 27 to rotate synchronously through the transmission belt 28. The driven wheel 27 drives the guide shaft to rotate, causing the drive gear 26 to rotate continuously, thereby realizing the rotation of the gear ring 25. This causes the cleaning blade 253 to rotate around the water inlet filter pipe 3, cleaning the debris accumulated at the lower end of the water inlet filter pipe 3, preventing the lower end of the water inlet filter pipe 3 from being blocked by debris, and ensuring stable pumping.

[0033] like Figure 5 , Figure 6As shown, a connecting ring 31 is installed on the outer side of the upper end of the water inlet filter pipe 3; a connecting groove 254 is provided on the vertical beam of the cleaning blade 253. The connecting groove 254 and the connecting ring 31 are slidably nested and connected, which can drive the cleaning blade 253 to rotate smoothly when the toothed ring 25 rotates, and maintain a relatively stable speed to clean the lower end of the water inlet filter pipe 3.

[0034] like Figure 7 As shown, two sets of crushing wheels 5 are symmetrically arranged. The blades of both sets of crushing wheels 5 are arc-shaped. The transmission gear 57 of one set of crushing wheels 5 is connected to the drive wheel 58. The arc-shaped blades can rotate rapidly when impacted by water flow, ensuring the stable operation of the crushing wheels 5. When the two sets of crushing wheels 5 rotate relative to each other, the blades fit together and cut the debris together.

[0035] like Figures 1-3 As shown, a protective cover base 4 is installed at the corresponding positions of the transmission belt 28 and the drive gear 26. A first protective cover 41 and a second protective cover 42 are respectively provided on both sides of the protective cover base 4. The first protective cover 41, the second protective cover 42, and the protective cover base 4 are connected by bolts. The protective cover base 4, the first protective cover 41, and the second protective cover 42 are connected to the docking base 23, enclosing the toothed ring 25 and the sleeve ring 31, which also protects the end of the cleaning blade 253. Extended support legs 43 are installed on the first and second protective covers 41 and 42 to lift the pump body 1 as a whole, preventing the direct extraction of silt from the bottom of the water body while pumping water, thus ensuring the efficiency of water extraction. When using the cleaning blade 253, it needs to be replaced periodically. During replacement, the first and second protective covers 41 and 42 need to be removed, and the third bolt 252 between the cleaning blade 253 and the mounting bracket 251 needs to be removed. After replacement, the corresponding components can be reinstalled.

[0036] The working principle of the above-mentioned anti-winding pump inlet filter structure is as follows: Pump body 1 is a self-coupling pump, which can be turned on by placing it in water. When turned on, the impeller 12 rotates and drives the water flow into the crushing chamber 21. The self-driving force of the water flow drives the crushing wheel 5 to rotate in the crushing chamber 21. While the crushing wheel 5 rotates, the crushing wheel shaft 51 at its center rotates accordingly. When the crushing wheel shaft 51 rotates, the first linkage gear 52 will rotate accordingly. The meshing action between the first linkage gear 52, the transmission gear 57, and the second linkage gear 53 realizes that the reciprocating screw 54 rotates with the crushing wheel shaft 51. When the reciprocating screw 54 rotates, the screw nut 55 and the cutting blade 56 installed on it reciprocate. The cutting blade 56 is in contact with the crushing wheel 5 and cuts the debris wrapped on the crushing wheel 5. At the same time, the anti-fouling flap 212 installed on the drive groove 211 wraps the moving point of the cutting blade 56 to prevent debris from entering the drive groove 211 and maintain the cleanliness of the drive groove 211. The cut debris is pumped away by the pump body 1 as the crushing wheel 5 rotates. While the transmission gear 57 rotates, the drive wheel 58 mounted on it drives the driven wheel 27 to rotate synchronously through the transmission belt 28, thereby realizing the continuous rotation of the drive gear 26, which in turn realizes the rotation of the gear ring 25, causing the cleaning blade 253 to rotate around the water inlet filter pipe 3. The sleeve groove 254 on the cleaning blade 253 is limited on the sleeve ring 31 to ensure the stability of the push, maintaining a relatively stable speed to clean the lower end of the water inlet filter pipe 3, preventing the lower end of the water inlet filter pipe 3 from being blocked by debris, and also cutting and pushing out the debris to ensure the stable water intake. After being cut and crushed by the crushing wheel 5 and the cutting blade 56, the debris will pass through the water pipe 2 as it is pushed towards the impeller 12. The crushing blade 6 installed in the water pipe 2 will rotate rapidly as the water is drawn in, and the debris will be crushed a second time before finally entering the pump body 1.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pump inlet filter structure for preventing entanglement, characterized in that, Includes pump body (1) and water pipe (2); An impeller (12) is installed inside the pump body (1). The lower end of the pump body (1) is the water inlet, which is connected to the upper end of the water pipe (2). The lower end of the water pipe (2) is provided with a crushing chamber (21), and a crushing wheel shaft (51) is rotatably installed inside the crushing chamber (21). A synchronously rotating crushing wheel (5) is installed on the crushing wheel shaft (51), and the edge of the fan blade of the crushing wheel (5) is a blade structure. Two sets of crushing wheels (5) are symmetrically arranged; A drive groove (211) is provided on the side wall of the crushing chamber (21). A reciprocating screw (54) parallel to the crushing wheel shaft (51) passes through the drive groove (211) and is rotatably connected to the crushing chamber (21). The first linkage gear (52) that rotates synchronously is installed on the crushing wheel shaft (51). The reciprocating lead screw (54) is equipped with a synchronously rotating second linkage gear (53). The first linkage gear (52) meshes with the second linkage gear (53) for transmission, and the reciprocating screw (54) rotates with the crushing wheel shaft (51); A screw nut (55) is installed on the reciprocating screw (54). The screw nut (55) is slidably connected to the drive groove (211). A cutting blade (56) is installed on the screw nut (55). The cutting blade (56) is located outside the drive groove (211) and is in contact with the edge of the blade of the crushing wheel (5).

2. The anti-winding pump inlet filter structure according to claim 1, characterized in that, Anti-fouling flaps (212) are installed on the upper and lower sides of the drive groove (211), and the anti-fouling flaps (212) are in contact with the lead screw nut (55) and the cutting blade (56).

3. The anti-winding pump inlet filter structure according to claim 1, characterized in that, The crusher shaft (51) is set horizontally; A crusher shaft (61) is rotatably installed inside the water pipe (2). The crusher shaft (61) is vertically set, and a synchronously rotating crusher (6) is installed on the crusher shaft (61).

4. The anti-winding pump inlet filter structure according to claim 3, characterized in that, A stabilizer (62) is installed on the crusher shaft (61), and the stabilizer (62) is fixed to the inner wall of the water pipe (2).

5. The anti-winding pump inlet filter structure according to claim 1, characterized in that, The lower end of the crushing chamber (21) is connected to a water inlet pipe (22), and the lower end of the water inlet pipe (22) is connected to a water inlet filter pipe (3), which is equipped with a filter structure.

6. The anti-winding pump inlet filter structure according to claim 5, characterized in that, A docking base (23) is provided on the outer side of the lower end of the water inlet pipe (22). A toothed ring (25) is rotatably sleeved on the docking base (23). A mounting bracket (251) is installed on the toothed ring (25). A cleaning blade (253) is installed on the mounting bracket (251). The cleaning blade (253) has an L-shaped structure, including a vertical beam and a horizontal blade connected together. The vertical beam is connected to the mounting bracket (251), and the horizontal blade is attached to the lower end of the water inlet filter pipe (3). The gear ring (25) is vertically meshed with a drive gear (26), and the drive gear (26) rotates synchronously with the driven wheel (27) through a guide shaft; The first linkage gear (52) and the second linkage gear (53) are driven by the meshing of the transmission gear (57); The axle of the transmission gear (57) rotates through the crushing chamber (21). The axle is located on the shaft section outside the crushing chamber (21) and a synchronously rotating drive wheel (58) is installed. The drive wheel (58) and the driven wheel (27) are connected by a transmission belt (28).

7. The anti-winding pump inlet filter structure according to claim 6, characterized in that, A sleeve ring (31) is installed on the outer side of the upper end of the water inlet filter pipe (3); The vertical beam of the cleaning blade (253) is provided with a socket groove (254), and the socket groove (254) is slidably nested with the socket ring (31).

8. The anti-winding pump inlet filter structure according to claim 6, characterized in that, Both sets of crushing wheels (5) have arc-shaped blades, and the transmission gear (57) of one set of crushing wheels (5) is connected to the drive wheel (58).

9. The anti-winding pump inlet filter structure according to claim 8, characterized in that, A protective cover base (4) is installed at the corresponding positions of the transmission belt (28) and the drive gear (26). A first protective cover (41) and a second protective cover (42) are respectively provided on both sides of the protective cover base (4). The protective cover base (4), the first protective cover (41) and the second protective cover (42) are connected to the docking base (23) to enclose the toothed ring (25) and the sleeve ring (31). Extended legs (43) are installed on the first protective cover (41) and the second protective cover (42).

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