Sewage pretreatment device for sewage source heat pump

Abstract

The present application relates to sewage pretreatment technical field, and disclose a kind of sewage source heat pump sewage pretreatment device, including sewage pretreatment equipment ontology The sewage pretreatment equipment ontology is provided with water inlet assembly, the fine filtration component is fixedly arranged on the bottom of the sewage pretreatment equipment ontology, the total water outlet is arranged in the bottom of the fine filtration component, the sewage of the present application is introduced by water inlet assembly top, sewage can be by water inlet assembly into the inside of sewage pretreatment equipment ontology, at this time by starting motor ontology, can be automatically cleaned to the dirt on the surface of multiple flat filter plate and arc filter plate under the cooperation of coarse filter component and anti-blocking component, continue to remove the impurities (such as silt, hair, fiber) accumulated on the surface of filter plate, avoid the decline of filtration flux due to blockage, while sewage can be by multiple flat filter plate top and be impacted, the dirt agglomerate adhered to the top of flat filter plate can be impacted.

Description

Technical Field

[0001] This invention relates to the field of wastewater pretreatment technology, specifically to a wastewater pretreatment device for a wastewater source heat pump. Background Technology

[0002] Wastewater source heat pumps are a type of water source heat pump. Water source heat pumps utilize low-grade heat energy resources formed by the absorption of solar and geothermal energy from shallow water sources on the Earth's surface, such as groundwater, rivers, and lakes. Employing the heat pump principle, they transfer low-grade heat energy to high-grade heat energy through a small input of high-grade electrical energy.

[0003] The patent application with publication number CN117504392A includes a water filter tank, and further includes: a water inlet located at the upper end of the water filter tank; and a water filter unit located inside the water filter tank. The water filter unit includes: a water filter plate, obliquely positioned inside the water filter tank via a water filter frame; a scraping component located on the water filter plate; and a cleaning component located directly below the oblique end of the water filter plate. By installing the water filter unit inside the water filter tank, pre-treatment of the wastewater source can be performed before it enters the water source heat pump unit, thereby eliminating the damage caused by impurities in the water to the water source heat pump unit. Furthermore, the scraping and cleaning components within the water filter unit allow impurities to be directly discharged from the pre-treatment device after the wastewater source is filtered. The cleaning component also squeezes the impurities, facilitating their discharge and reducing the time required for subsequent dehydration treatment.

[0004] In the aforementioned patents or prior art, wastewater source heat pumps require pretreatment of wastewater before it is introduced. Wastewater contains a large amount of suspended solids, fibrous materials (such as hair and paper scraps), and sand particles. If pretreatment is not performed, these impurities will clog the heat exchanger of the heat pump, affecting heat exchange efficiency and even causing system failure. Most existing wastewater pretreatment equipment is usually composed of multiple layers of filter screens and filter elements. However, viscous substances such as grease and colloids in wastewater easily adhere to the surface of the equipment or the pores of the filter screen, forming a layer of dirt that is difficult to remove. If the filter screen, grid, or sedimentation tank is not cleaned for a long time, the impurities accumulate to a critical value and cause blockage. For example, if the deposits on the filter screen are not removed in time, the throughput will continue to decline. Summary of the Invention

[0005] The problem this invention aims to solve is that most existing wastewater pretreatment equipment inevitably experiences blockages during prolonged use.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a sewage pretreatment device for a sewage source heat pump, comprising a sewage pretreatment device body, wherein an inlet assembly is provided on the sewage pretreatment device body, a fine filter assembly is fixedly provided at the bottom of the sewage pretreatment device body, a main outlet pipe is provided at the bottom of the fine filter assembly, a coarse filter assembly is provided on the sewage pretreatment device body, and an anti-clogging component is provided inside the sewage pretreatment device body;

[0007] The coarse filtration assembly includes a motor body mounted on the main body of the wastewater pretreatment equipment. The output end of the motor body is connected to a rotating shaft body via a coupling. A connecting sleeve is fixedly installed on the rotating shaft body. Multiple connecting arms are fixedly installed on the arc-shaped outer wall of the connecting sleeve. A filter box is fixedly installed on each connecting arm. A flat filter plate is fixedly installed on the filter box. An arc-shaped filter plate is fixedly installed on one side of the flat filter plate on the filter box. The filter box is hollow inside. A central water guide pipe is sleeved inside the connecting sleeve. Multiple side water guide pipes are fixedly installed on the arc-shaped outer wall of the central water guide pipe, and the multiple side water guide pipes are respectively connected to the interior of multiple filter boxes. Each of the side water guide pipes is connected to the interior of the central water guide pipe. A water guide bend is rotatably connected to the bottom of the central water guide pipe, and the water guide bend is fixedly connected to the main body of the wastewater pretreatment equipment.

[0008] Preferably, the anti-clogging component includes a central convex plate fixed to the top of the inner wall of the wastewater pretreatment equipment body, a side push rod inserted into the side wall of each filter box, an end fixedly provided on one end of each side push rod, an arc-shaped scraper fixedly provided on the other end of the side push rod, and the arc-shaped scraper is slidably disposed with the top of the arc-shaped filter plate, a straight scraper fixedly provided on one side of the arc-shaped scraper, and the straight scraper is slidably disposed with the top of the flat filter plate, and a cleaning component is provided on the central convex plate.

[0009] Preferably, the water guide bend is provided with a rotating hole that matches the rotating shaft body, and a trapezoidal box is fixedly provided at the end of the side water guide pipe away from the central water guide pipe. One side of the trapezoidal box is connected to the inside of the side water guide pipe, and the other side of the trapezoidal box is connected to the inside of the filter box.

[0010] Preferably, a reciprocating spring is fixedly provided between the end and the filter box, and the reciprocating spring is sleeved on the side push rod. Multiple ends are distributed in a ring array around the central convex disk, and the ends of multiple ends are in contact with the periphery of the central convex disk.

[0011] Preferably, the fine filtration assembly is provided with a filter element inside, the bottom of the water guide bend is connected to the inside of the fine filtration assembly, the water inlet assembly includes multiple branch pipes fixed to the top of the sewage pretreatment equipment body, and a main water inlet pipe is fixedly installed on the multiple branch pipes. Each branch pipe is connected to the inside of the sewage pretreatment equipment body, and the bottom of each branch pipe is located above each filter box.

[0012] Preferably, the cleaning component includes multiple electric push rod bodies installed on the main body of the sewage pretreatment equipment, and a downward moving cone ring is fixedly provided at the output end of the multiple electric push rod bodies. Multiple transverse blocks are slidably arranged on the central cam, and a triangular block is fixedly arranged on each transverse block. The bottom of the downward moving cone ring contacts the top of the multiple triangular blocks. A return spring is fixedly arranged between each transverse block and the interior of the central cam. Multiple outer guide rails are fixedly arranged on the arc-shaped outer wall of the sewage pretreatment equipment body, and a sealing plate is slidably arranged between each outer guide rail. The multiple sealing plates are respectively located on one side of the multiple transverse blocks.

[0013] Preferably, a support rod is fixedly installed at the top of the central convex disk, and the support rod is fixedly connected to the inner wall of the sewage pretreatment equipment body. A sleeve seat is fixedly installed at the top of the lower conical ring, and the sleeve seat is slidably connected to the arc-shaped outer wall of the support rod.

[0014] Preferably, each of the transverse blocks is fixedly provided with a guide strip, each of the sealing plates is fixedly provided with a spring fixing plate on both sides, and each spring fixing plate is fixedly provided with a limit spring between it and the outer guide rail. The main body of the sewage pretreatment equipment is provided with a rubber sealing groove that matches the sealing plate.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0016] (1) By introducing sewage into the main body of the sewage pretreatment equipment through the top of the inlet assembly, the sewage can enter the main body of the sewage pretreatment equipment through the inlet assembly. At this time, by starting the motor body, the coarse filter component and the anti-clogging component can automatically clean the dirt on the surface of multiple flat plate filter plates and arc filter plates, continuously remove the impurities (such as mud, sand, hair, and fibers) accumulated on the surface of the filter plates, and avoid the decrease in filtration flux due to clogging. At the same time, sewage can be flushed in from the top of multiple flat plate filter plates, which can impact the dirt clumps attached to the top of the flat plate filter plates. The high-speed water flow forms turbulence on the surface of the filter plate, generating shear stress, destroying the adhesion between the dirt and the filter screen, and the suspended particles (such as sand) in the sewage impact the filter plate with the water flow, enhancing the mechanical peeling effect.

[0017] (2) By activating the electric push rod body and the motor body, and with the cooperation of the coarse filter component, the anti-clogging component and the cleaning component, the present invention can move multiple sets of arc-shaped scrapers and straight scrapers to the outside of the sewage pretreatment equipment body. By cleaning the dirt on the surface of multiple sets of arc-shaped scrapers and straight scrapers, the surface of the filter plate can be cleaned. This reduces the time loss caused by disassembling and cleaning the filter plate during traditional shutdown maintenance, improves the cleaning efficiency of the filter plate, and further improves the filtration efficiency of the sewage pretreatment equipment body. By moving the scrapers to the outside of the pretreatment equipment for cleaning, the goal of efficient, low-consumption and safe maintenance can be achieved. This technology is especially suitable for sewage scenarios with high suspended solids, high viscosity and high corrosiveness. It is a key innovation to improve the reliability of sewage heat source pump system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the side structure of the wastewater pretreatment equipment body of the present invention;

[0020] Figure 3 For the present invention Figure 2 A magnified view of part A in the image;

[0021] Figure 4 This is a schematic cross-sectional view of the main body of the wastewater pretreatment equipment of the present invention.

[0022] Figure 5 For the present invention Figure 4 A magnified view of part B in the image;

[0023] Figure 6 This is an exploded view of the wastewater pretreatment equipment body of the present invention;

[0024] Figure 7 This is a schematic diagram of the connection structure between the coarse filter component and the cleaning component of the present invention;

[0025] Figure 8 This is a schematic diagram of the coarse filter assembly structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the anti-clogging component structure of the present invention;

[0027] Figure 10 This is a schematic diagram of the cross-sectional structure of the filter box of the present invention;

[0028] Figure 11 This is a schematic diagram of the cross-sectional structure of the central convex disk of the present invention;

[0029] Figure 12 For the present invention Figure 11 A magnified view of part C.

[0030] In the diagram: 1. Wastewater pretreatment equipment body; 11. Inlet assembly; 12. Fine filter assembly; 13. Main outlet pipe;

[0031] 2. Coarse filter assembly; 21. Rotary shaft body; 211. Motor body; 212. Connecting sleeve; 22. Connecting support arm; 23. Filter box; 24. Flat filter plate; 25. Arc-shaped filter plate; 26. Side water guide pipe; 27. Central water guide pipe; 28. Water guide bend;

[0032] 3. Anti-clogging component; 31. Central cam; 32. Side push rod; 321. End; 322. Reciprocating spring; 33. Arc-shaped scraper; 34. Straight scraper;

[0033] 4. Cleaning components; 41. Lowering cone ring; 411. Electric push rod body; 42. Triangular block; 43. Lateral block; 431. Return spring; 44. Sealing plate; 45. Outer guide rail; 451. Limit spring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0036] like Figures 1 to 12 As shown, the present invention provides a wastewater pretreatment device for a wastewater source heat pump, including a wastewater pretreatment device body 1, an inlet assembly 11 on the wastewater pretreatment device body 1, a fine filter assembly 12 fixedly installed at the bottom of the wastewater pretreatment device body 1, a main outlet pipe 13 installed at the bottom of the fine filter assembly 12, a coarse filter assembly 2 on the wastewater pretreatment device body 1, and an anti-clogging assembly 3 installed inside the wastewater pretreatment device body 1.

[0037] The coarse filter assembly 2 includes a motor body 211 installed on the main body 1 of the wastewater pretreatment equipment. The output end of the motor body 211 is connected to a rotating shaft body 21 via a coupling. A connecting sleeve 212 is fixedly installed on the rotating shaft body 21. Multiple connecting arms 22 are fixedly installed on the arc-shaped outer wall of the connecting sleeve 212. A filter box 23 is fixedly installed on each connecting arm 22. A flat filter plate 24 is fixedly installed on the filter box 23. A filter is fixedly installed on one side of the flat filter plate 24 on the filter box 23. An arc-shaped filter plate 25 is provided. The filter box 23 is hollow inside. A central water guide pipe 27 is sleeved inside the connecting sleeve 212. Multiple side water guide pipes 26 are fixedly installed on the arc-shaped outer wall of the central water guide pipe 27. The multiple side water guide pipes 26 are respectively connected to the interior of multiple filter boxes 23. Each side water guide pipe 26 is connected to the interior of the central water guide pipe 27. A water guide bend 28 is rotatably connected to the bottom of the central water guide pipe 27. The water guide bend 28 is fixedly connected to the main body 1 of the sewage pretreatment equipment.

[0038] The anti-clogging component 3 includes a central convex plate 31 fixed to the top of the inner wall of the sewage pretreatment equipment body 1. Each filter box 23 has a side push rod 32 inserted into its side wall. Each side push rod 32 has an end head 321 fixedly installed on one end. An arc-shaped scraper 33 is fixedly installed on the other end of the side push rod 32. The arc-shaped scraper 33 is slidably installed with the top of the arc-shaped filter plate 25. A straight scraper 34 is fixedly installed on one side of the arc-shaped scraper 33. The straight scraper 34 is slidably installed with the top of the flat filter plate 24. A cleaning component 4 is installed on the central convex plate 31.

[0039] The water guide bend 28 is provided with a rotating hole that matches the rotating shaft body 21. A trapezoidal box is fixedly installed at one end of the side water guide pipe 26 away from the central water guide pipe 27. One side of the trapezoidal box is connected to the inside of the side water guide pipe 26, and the other side of the trapezoidal box is connected to the inside of the filter box 23.

[0040] A reciprocating spring 322 is fixedly installed between the end 321 and the filter box 23, and the reciprocating spring 322 is sleeved on the side push rod 32. Multiple ends 321 are arranged in a ring array around the central convex disk 31, and the ends of multiple ends 321 are in contact with the periphery of the central convex disk 31.

[0041] The fine filter assembly 12 is equipped with a filter element. The bottom of the water guide bend 28 is connected to the interior of the fine filter assembly 12. The water inlet assembly 11 includes multiple branch pipes fixed to the top of the sewage pretreatment equipment body 1, and a main water inlet pipe is fixedly installed on each branch pipe. Each branch pipe is connected to the interior of the sewage pretreatment equipment body 1, and the bottom of each branch pipe is located above each filter box 23.

[0042] When the sewage pretreatment equipment 1 is pretreating sewage, the sewage can be introduced from the top of the main inlet pipe of the inlet assembly 11. The sewage can enter the branch pipe from the main inlet pipe and then enter the interior of the sewage pretreatment equipment 1. At this time, by starting the motor body 211, the connecting sleeve 212 fixedly connected to the rotating shaft body 21 will rotate under the connection of the rotating shaft body 21. In turn, under the connection of multiple connecting arms 22, multiple filter boxes 23 will rotate. At this time, multiple streams of sewage can impact the arc-shaped filter plates 25 set on the filter boxes 23, which can wash away the dirt and clumps on the top of the arc-shaped filter plates 25, and play a preliminary role in preventing the arc-shaped filter plates 25 from clogging. At the same time, the sewage can pass through the arc-shaped filter plates 25. The wastewater entering the filter box 23 from the top, and the wastewater splashed onto the sides of the filter box 23 and the wastewater accumulated inside the wastewater pretreatment equipment body 1 can enter the filter box 23 through the flat filter plate 24 under the rotation of the filter box 23. At the same time, the wastewater impacted by the flat filter plate 24 can splash onto the top of the arc filter plate 25 and be filtered by the arc filter plate 25, which improves the filtration efficiency. The wastewater entering the multiple filter boxes 23 can enter the central water guide pipe 27 through multiple side water guide pipes 26, and then enter the fine filter assembly 12 through the water guide bend pipe 28. The wastewater entering the fine filter assembly 12 can be discharged through the main outlet pipe 13 after being filtered by the filter element.

[0043] While the multiple filter boxes 23 rotate, the central cam 31 remains stationary relative to the multiple filter boxes 23, allowing the fixed ends 321 on the multiple side push rods 32 to slide along the arc-shaped outer wall of the central cam 31. Simultaneously, with the cooperation of the reciprocating spring 322, the side push rods 32 can slide back and forth on the filter boxes 23, thereby causing the arc-shaped scraper 33 and the straight scraper 34 fixed at the ends of the side push rods 32 to slide back and forth on the arc-shaped filter plate 25 and the flat filter plate 24, respectively. This scrapes away the impurities accumulated on the flat filter plate 24 and the arc-shaped filter plate 25, thus preventing the filter boxes 23 from becoming clogged.

[0044] The cleaning component 4 includes multiple electric push rod bodies 411 installed on the sewage pretreatment equipment body 1, and a downward moving cone ring 41 is fixedly installed at the output end of the multiple electric push rod bodies 411. Multiple transverse blocks 43 are slidably arranged on the central cam 31. A triangular block 42 is fixedly installed on each transverse block 43. The bottom of the downward moving cone ring 41 contacts the top of the multiple triangular blocks 42. A return spring 431 is fixedly installed between each transverse block 43 and the interior of the central cam 31. Multiple external guide rails 45 are fixedly installed on the arc-shaped outer wall of the sewage pretreatment equipment body 1, and a sealing plate 44 is slidably arranged between each external guide rail 45. The multiple sealing plates 44 are located on one side of the multiple transverse blocks 43 respectively.

[0045] A support rod is fixedly installed at the top of the central convex plate 31, and the support rod is fixedly connected to the inner wall of the sewage pretreatment equipment body 1. A sleeve seat is fixedly installed at the top of the lower cone ring 41, and the sleeve seat is slidably connected to the arc-shaped outer wall of the support rod.

[0046] Each transverse block 43 is fixedly equipped with a guide strip, each sealing plate 44 is fixedly equipped with a spring fixing plate on both sides, and each spring fixing plate is fixedly equipped with a limit spring 451 between the outer guide rail 45 and the sewage pretreatment equipment body 1. A rubber sealing groove matching the sealing plate 44 is opened on the body 1.

[0047] When it is necessary to clean the impurities accumulated on the top of the arc-shaped filter plates 25 and flat filter plates 24 on multiple filter boxes 23, the electric push rod body 411 can be activated to drive the downward cone ring 41 fixed to the output end of the electric push rod body 411 to descend. At the same time, it pushes multiple triangular blocks 42 located inside the sewage pretreatment equipment body 1 to move radially towards multiple filter boxes 23, thereby driving multiple transverse blocks 43 to slide. At this time, the motor body 211 is activated. With the cooperation of the coarse filter component 2 and the anti-clogging component 3, when multiple ends 321 move to the contact position with multiple transverse blocks 43, multiple sets of arc-shaped scrapers 33 and straight scrapers 34 can push multiple sealing plates 44 to slide towards the outside of the sewage pretreatment equipment body 1. When multiple sets of arc-shaped scrapers 33 and straight scrapers 34 move to the outside of the sewage pretreatment equipment body 1, the impurities on the surface of multiple sets of arc-shaped scrapers 33 and straight scrapers 34 can be cleaned to achieve the effect of cleaning dirt.

[0048] The working principle and usage process of this invention are as follows: First, sewage is introduced through the top of the main inlet pipe of the inlet assembly 11. The sewage can enter the branch pipe from the main inlet pipe and then enter the sewage pretreatment equipment body 1. At this time, by starting the motor body 211, the connecting sleeve 212 fixedly connected to the rotating shaft body 21 is driven to rotate. Then, under the connection of multiple connecting arms 22, multiple filter boxes 23 are driven to make circumferential motion. At this time, multiple streams of sewage can impact the arc-shaped filter plate 25 set on the filter box 23. At the same time, sewage can enter the filter box 23 from the top of the arc-shaped filter plate 25. The sewage splashed to the periphery of the filter box 23 and the sewage accumulated inside the sewage pretreatment equipment body 1 can enter the filter box 23 through the flat filter plate 24 under the action of the rotation of the filter box 23. At the same time, the sewage inside the sewage pretreatment equipment body 1 can splash to the top of the arc-shaped filter plate 25 under the impact of the flat filter plate 24. The arc-shaped filter plate 25 improves filtration efficiency. Wastewater entering the multiple filter boxes 23 can enter the central water guide pipe 27 through multiple side water guide pipes 26, and then enter the fine filter assembly 12 through the water guide bend 28. The wastewater entering the fine filter assembly 12 can be discharged through the main outlet pipe 13 after being filtered by the filter element. While the multiple filter boxes 23 are rotating, the central convex plate 31 is stationary relative to the multiple filter boxes 23, so the fixed ends 321 on the multiple side push rods 32 can slide along the arc-shaped outer wall of the central convex plate 31. At the same time, with the cooperation of the reciprocating spring 322, the side push rods 32 can slide back and forth on the filter box 23, so that the arc-shaped scraper 33 and the straight scraper 34 fixed at the end of the side push rod 32 can slide back and forth on the arc-shaped filter plate 25 and the flat filter plate 24 respectively, which can scrape off the impurities accumulated on the flat filter plate 24 and the arc-shaped filter plate 25.

[0049] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A wastewater pretreatment device for a wastewater source heat pump, comprising a wastewater pretreatment equipment body (1), characterized in that: The wastewater pretreatment equipment body (1) is provided with an inlet assembly (11), a fine filter assembly (12) is fixedly provided at the bottom of the wastewater pretreatment equipment body (1), a main outlet pipe (13) is provided at the bottom of the fine filter assembly (12), a coarse filter assembly (2) is provided on the wastewater pretreatment equipment body (1), and an anti-clogging assembly (3) is provided inside the wastewater pretreatment equipment body (1). The coarse filter assembly (2) includes a motor body (211) installed on the main body (1) of the sewage pretreatment equipment. The output end of the motor body (211) is connected to a rotating shaft body (21) via a coupling. A connecting sleeve (212) is fixedly installed on the rotating shaft body (21). Multiple connecting arms (22) are fixedly installed on the arc-shaped outer wall of the connecting sleeve (212). A filter box (23) is fixedly installed on each connecting arm (22). A flat filter plate (24) is fixedly installed on the filter box (23). The filter box (23) is located on one side of the flat filter plate (24). An arc-shaped filter plate (25) is fixedly installed. The filter box (23) is hollow inside. A central water guide pipe (27) is sleeved inside the connecting sleeve (212). Multiple side water guide pipes (26) are fixedly installed on the arc-shaped outer wall of the central water guide pipe (27). The multiple side water guide pipes (26) are respectively connected to the interior of multiple filter boxes (23). Each side water guide pipe (26) is connected to the interior of the central water guide pipe (27). A water guide bend (28) is rotatably connected to the bottom of the central water guide pipe (27). The water guide bend (28) is fixedly connected to the main body (1) of the sewage pretreatment equipment. The anti-clogging component (3) includes a central convex plate (31) fixed to the top of the inner wall of the sewage pretreatment equipment body (1), a side push rod (32) is inserted into the side wall of each filter box (23), an end head (321) is fixedly provided on one end of each side push rod (32), an arc-shaped scraper (33) is fixedly provided on the other end of the side push rod (32), and the arc-shaped scraper (33) is slidably disposed with the top of the arc-shaped filter plate (25), a straight scraper (34) is fixedly disposed on one side of the arc-shaped scraper (33), and the straight scraper (34) is slidably disposed with the top of the flat filter plate (24), and a cleaning component (4) is provided on the central convex plate (31). The cleaning component (4) includes multiple electric push rod bodies (411) installed on the main body (1) of the sewage pretreatment equipment. A downward-moving cone ring (41) is fixedly installed at the output end of each of the multiple electric push rod bodies (411). Multiple transverse blocks (43) are slidably arranged on the central cam (31). A triangular block (42) is fixedly installed on each transverse block (43). The bottom of the downward-moving cone ring (41) contacts the top of the multiple triangular blocks (42). A return spring (431) is fixedly installed between each transverse block (43) and the interior of the central cam (31). The sewage... Multiple outer guide rails (45) are fixedly installed on the arc-shaped outer wall of the pretreatment equipment body (1), and a sealing plate (44) is slidably installed between each outer guide rail (45). The multiple sealing plates (44) are located on one side of multiple transverse blocks (43). A guide strip is fixedly installed on each transverse block (43). A spring fixing plate is fixedly installed on both sides of each sealing plate (44), and a limit spring (451) is fixedly installed between each spring fixing plate and the outer guide rail (45). A rubber sealing groove matching the sealing plate (44) is opened on the sewage pretreatment equipment body (1).

2. The wastewater pretreatment device for a wastewater source heat pump according to claim 1, characterized in that: The water guide bend (28) is provided with a rotating hole that matches the rotating shaft body (21). A trapezoidal box is fixedly installed at one end of the side water guide pipe (26) away from the central water guide pipe (27). One side of the trapezoidal box is connected to the inside of the side water guide pipe (26), and the other side of the trapezoidal box is connected to the inside of the filter box (23).

3. The wastewater pretreatment device for a wastewater source heat pump according to claim 1, characterized in that: A reciprocating spring (322) is fixedly provided between the end (321) and the filter box (23), and the reciprocating spring (322) is sleeved on the side push rod (32). Multiple ends (321) are arranged in a ring array around the central cam (31), and the ends of multiple ends (321) are in contact with the central cam (31).

4. The wastewater pretreatment device for a wastewater source heat pump according to claim 1, characterized in that: The fine filter assembly (12) is equipped with a filter element inside. The bottom of the water guide bend (28) is connected to the inside of the fine filter assembly (12). The water inlet assembly (11) includes multiple branch pipes fixed to the top of the sewage pretreatment equipment body (1). A main water inlet pipe is fixedly installed on each of the multiple branch pipes. Each branch pipe is connected to the inside of the sewage pretreatment equipment body (1), and the bottom of each branch pipe is located above each filter box (23).

5. A wastewater pretreatment device for a wastewater source heat pump according to claim 1, characterized in that: The top of the central convex disc (31) is fixedly provided with a support rod, and the support rod is fixedly connected to the inner wall of the sewage pretreatment equipment body (1). The top of the lower conical ring (41) is fixedly provided with a sleeve seat, and the sleeve seat is slidably connected to the arc-shaped outer wall of the support rod.

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