Sewage pretreatment device for sewage source heat pump

Abstract

The application discloses a sewage pretreatment device for sewage source heat pump, and particularly relates to the sewage treatment field, which comprises a heat pump assembly and a pretreatment assembly, the water outlet end of the pretreatment assembly is connected with the water inlet end of the heat pump assembly; the pretreatment assembly comprises a tank body, and the tank body is provided with a water inlet pipe, a filter assembly and a drain pipe. The application sets a slag removal mechanism, which can remove the deposits on the filter assembly through water spraying and guiding, so that the problem that the deposits are broken during cleaning, the broken deposits are directly transported into the heat pump assembly through the filter assembly, scale is generated in the heat pump assembly, the heat transfer efficiency of the heat exchanger in the heat pump assembly is reduced, the energy consumption of the heat pump is increased, and the operation efficiency is reduced can be avoided, and the purification of the sewage and the transportation of the sewage are not affected during the cleaning of the deposits, so that the effect of cleaning the deposits without stopping the machine can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to sewage treatment technical field, more particularly, the present application relates to a kind of sewage source heat pump sewage pretreatment device. BACKGROUND

[0002] Sewage source heat pump is a kind of using municipal sewage as cold and heat source, through heat pump technology energy conversion, realize heating, refrigeration and hot water supply of high efficiency energy-saving equipment, it belongs to renewable energy utilization technology, currently sewage source heat pump in input municipal sewage before heat exchange usually still needs to municipal sewage is pretreated, to reduce the influence of impurities in municipal sewage on sewage source heat pump.

[0003] Using sewage source heat pump to carry out heat exchange to municipal sewage, and can improve the utilization rate of resources, also can avoid water pollution caused by direct discharge through purification treatment of sewage, according to GB / T19923-2024 in municipal sewage for calcium and magnesium ions usually adopts chemical precipitate to purify it, which mainly through adding reaction reagent to municipal sewage and calcium and magnesium ions in sewage reaction, but usually precipitate is generated in the reaction process, currently usually through the filter screen arranged in the treatment tank to filter precipitate, but long time use, usually need to stop to clean the precipitate on filter screen, but its cleaning process, usually adopts scraper to move along the surface of filter screen, and the precipitate is scraped off from filter screen, but in its scraping process, the precipitate stuck in filter screen filter hole is easily scraped off, when the precipitate is scraped off, the fine particles formed by the scraped-off precipitate, then easily cause broken precipitate fine particles to be directly transported to sewage source heat pump through filter screen, cause these precipitates to be accumulated on the surface of heat exchanger in sewage source heat pump, and gradually accumulated on the pipe wall, form scale, cause significantly reduce heat conduction efficiency, cause heat pump energy consumption to increase, operating efficiency to decline. SUMMARY

[0004] The sewage source heat pump sewage pretreatment device provided by the present application solves the problem that the existing precipitate is easily broken during cleaning during pretreatment of sewage, and the broken precipitate fine particles are easily transported to the sewage source heat pump through the filter screen, causing the precipitate to be accumulated on the surface of the heat exchanger in the sewage source heat pump and gradually accumulated on the pipe wall, forming scale, significantly reducing the heat conduction efficiency, increasing the energy consumption of the heat pump, and reducing the operating efficiency.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a sewage source heat pump sewage pretreatment device, comprising: heat pump assembly and pretreatment assembly, the water outlet end of the pretreatment assembly is connected with the water inlet end of the heat pump assembly in communication;

[0006] The pretreatment component includes a tank, which is equipped with an inlet pipe, a filter assembly, and an outlet pipe. The tank is also equipped with a dosing pipe for adding reaction agents into the tank. The tank is equipped with a stirring assembly for mixing the wastewater with the reaction agents.

[0007] The tank is equipped with a partition assembly, which includes a partition plate fixedly installed inside the tank. Multiple hinged plates are hinged inside the partition plate. The partition plate and the hinged plates divide the tank into a reaction zone and a filtration zone. The reaction zone and the filtration zone are separated by the flipping of the hinged plates.

[0008] The tank is also equipped with a guide plate that can move along the surface of the filter assembly. The tank is also equipped with a sludge discharge mechanism, which includes a sludge guiding component and a linear drive component. The sludge guiding component is used to spray water onto the filter assembly to carry the sediment off the surface of the filter assembly. The linear drive component is used to drive the water outlet of the sludge guiding component to move linearly at the bottom of the filter assembly. The linear drive component can also drive the guide plate to move along the surface of the filter assembly, guiding the sediment carried away from the filter assembly to one side of the tank. A sludge discharge pipe is also provided on one side of the tank for discharging the sediment.

[0009] In a preferred embodiment, the stirring assembly includes a stirring shaft rotatably disposed within the tank, a plurality of stirring rods fixedly disposed on the stirring shaft, each of the stirring rods having a plurality of liquid outlet holes, and the end of the stirring shaft being rotatably connected to the dosing pipe. A rotary drive assembly is disposed on the tank, and the output section of the rotary drive assembly is connected to the stirring shaft.

[0010] In a preferred embodiment, the sludge guiding assembly includes a liquid delivery assembly, the inlet and outlet of which extend into the tank body. The outlet of the liquid delivery assembly is connected to a flexible hose, the outlet of which is connected to a diversion pipe. Multiple nozzles are connected to the diversion pipe, and the outlets of the multiple nozzles all point towards the filter assembly.

[0011] In a preferred embodiment, the linear drive assembly includes a drive member, the output end of which is equipped with a lead screw. The lead screw is threadedly connected to a first movable plate and a second movable plate. A diverter pipe is fixedly mounted on the first movable plate, and a sliding shaft is fixedly mounted on one side of the second movable plate. One end of the sliding shaft is disposed inside the tank and mounted on one side of the guide plate.

[0012] In a preferred embodiment, the filter assembly is inclined, and an adjustment assembly is provided on one side of the guide plate. The adjustment assembly includes a connecting block fixedly disposed at the end of the slide shaft, and a fixing block is fixedly disposed on one side of the guide plate. The fixing block is slidably sleeved on the connecting block, and an elastic element is also provided on the connecting block. In the initial state, the elastic element is in a stretched state.

[0013] In a preferred embodiment, the guide plate includes a middle plate and side plates slidably disposed on both sides of the middle plate. A telescopic component is provided in the guide plate. The telescopic component includes a bottom groove formed at the bottom of the middle plate. A sliding plate is fixedly disposed on the side of the two side plates that are close to each other. The two sliding plates are slidably disposed in the bottom groove. An elastic element two is disposed between the two sliding plates. In the initial state, the elastic element two is in a compressed state.

[0014] In a preferred embodiment, the tank body is further provided with a buffer assembly, which includes multiple buffer plates disposed below the partition plate. Each buffer plate has multiple flow guide holes and the multiple buffer plates are evenly distributed in the vertical direction.

[0015] In a preferred embodiment, a storage slot is provided at the bottom of the partition plate, and an adjustment mechanism is also provided on the tank body. The adjustment mechanism is used to store multiple buffer plates into the storage slot.

[0016] In a preferred embodiment, the adjusting mechanism includes a power component, a connecting shaft is installed at the output end of the power component, a winding wheel is fixedly mounted on the connecting shaft, a plurality of annular grooves are sequentially provided on the surface of the winding wheel along the axial direction, a connecting member is fixedly mounted in each of the plurality of annular grooves, a sliding rod is fixedly mounted at the end of each of the plurality of connecting members away from the winding wheel, and the plurality of sliding rods are slidably mounted in the partition plate, and the other end of the plurality of sliding rods is fixedly connected to the corresponding buffer plate.

[0017] In a preferred embodiment, the multiple annular grooves on the winding reel are evenly arranged in the horizontal direction, and the diameter of each annular groove is different.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention, by setting up a sludge removal mechanism, removes and guides the sediment on the filter assembly through water spraying. This avoids the problem of sediment breakage during cleaning, which would otherwise cause fine particles to be directly transported through the filter assembly into the heat pump assembly, resulting in scaling inside the heat pump assembly. This would reduce the heat transfer efficiency of the heat exchanger, leading to increased energy consumption and decreased operating efficiency of the heat pump. Furthermore, the process of cleaning sediment does not affect the purification and transportation of wastewater, achieving the effect of cleaning sediment without shutting down the system. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a schematic cross-sectional view of the tank body of the present invention. Figure 1 .

[0022] Figure 3 This is a three-dimensional structural diagram of the stirring assembly of the present invention.

[0023] Figure 4 This is a top sectional view of the tank body of the present invention.

[0024] Figure 5 This is a schematic cross-sectional view of the tank body of the present invention. Figure 2 .

[0025] Figure 6 for Figure 2 Enlarged view of part A in the middle.

[0026] Figure 7 This is a schematic diagram of the working state of the telescopic component of the present invention.

[0027] Figure 8 for Figure 7 Enlarged view of section B.

[0028] Figure 9 This is a schematic cross-sectional view of the tank body of the present invention. Figure 3 .

[0029] Figure 10 This is a schematic cross-sectional view of the tank body of the present invention. Figure 4 .

[0030] Figure 11 for Figure 10 Enlarged view of section C.

[0031] The attached figures are labeled as follows: 1. Heat pump assembly; 2. Pretreatment assembly; 21. Tank; 22. Inlet pipe; 23. Stirring assembly; 231. Stirring shaft; 232. Stirring rod; 2321. Liquid outlet; 233. Dosing pipe; 234. Rotary drive assembly; 24. Filter assembly; 25. Drain pipe; 3. Separation assembly; 31. Separation plate; 311. Opening; 312. Collection tank; 32. Opening and closing plate; 4. Guide plate; 41. Middle plate; 42. Side plate; 5. Slag discharge mechanism; 51. Slag guiding assembly; 511. Infusion assembly; 512. Hoses; 5 13. Diverter pipe; 514. Nozzle; 52. Linear drive assembly; 521. Drive component; 522. Lead screw; 523. Moving plate one; 524. Moving plate two; 53. Adjustment assembly; 531. Connecting block; 532. Fixing block; 533. Elastic component one; 6. Telescopic assembly; 61. Bottom groove; 62. Slide plate; 63. Elastic component two; 7. Buffer assembly; 71. Buffer plate; 711. Guide hole; 8. Adjustment mechanism; 81. Power component; 82. Connecting shaft; 83. Rewinding wheel; 831. Annular groove; 84. Connecting component; 85. Slide rod. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Refer to the instruction manual appendix Figures 1 to 5 A wastewater pretreatment device for a wastewater source heat pump includes: a heat pump assembly 1 and a pretreatment assembly 2, wherein the outlet of the pretreatment assembly 2 is connected to the inlet of the heat pump assembly 1, and the pretreatment assembly 2 is used to pre-purify the wastewater that needs to be introduced into the heat pump assembly 1.

[0034] The pretreatment component 2 includes a tank 21, on which an inlet pipe 22, a filter component 24, and a drain pipe 25 are provided. The tank 21 is also provided with a dosing pipe 233, which is used to add reaction agents into the tank 21. The tank 21 is provided with a stirring component 23, which is used to stir the wastewater and the reaction agents.

[0035] A partition assembly 3 is provided inside the tank body 21. The partition assembly 3 includes a partition plate 31 fixedly installed inside the tank body 21. Multiple opening and closing plates 32 are hinged inside the partition plate 31. The partition plate 31 and the opening and closing plates 32 divide the tank body 21 into a reaction zone and a filtration zone. The reaction zone and the filtration zone are separated by the flipping of the opening and closing plates 32.

[0036] The tank body 21 is also equipped with a guide plate 4 that can move along the surface of the filter assembly 24. The tank body 21 is also equipped with a slag discharge mechanism 5, which includes a slag guide component 51 and a linear drive component 52. The slag guide component 51 is used to spray water onto the filter assembly 24 to carry the sediment on the filter assembly 24 away from the surface of the filter assembly 24. The linear drive component 52 is used to drive the water outlet end of the slag guide component 51 to move linearly at the bottom of the filter assembly 24. The linear drive component 52 can also drive the guide plate 4 to move along the surface of the filter assembly 24 to guide the sediment carried away from the filter assembly 24 to move to one side of the tank body 21. A slag discharge pipe is also provided on one side of the tank body 21 for discharging the sediment.

[0037] It should be noted that the area above the partition component 3 is the reaction zone, and the area below the partition component 3 is the filtration zone. The filtration component 24 can be a filter screen, and the reaction agent can be lime milk, soda, etc., to cause calcium and magnesium ions to form insoluble hydroxide or carbonate precipitates, respectively. The partition plate 31 has multiple openings 311, and multiple opening and closing plates 32 are located in the corresponding openings 311. When the opening and closing plates 32 are closed, they can fit against the inner wall of the openings 311. The opening and closing plates 32 can be driven to rotate by a motor. When sewage is introduced, the opening and closing plates 32 are driven to close by the motor, so that the sewage only enters the reaction zone. At the same time, chemical agents are added to the reaction zone, causing the calcium and magnesium ions in the sewage to react with the chemical agents to form precipitates. With the continuous input of sewage and When chemical reagents are added, the amount of wastewater in the reaction zone needs to be greater than the amount of wastewater that can be held between the bottom of the tank 21 and the filter assembly 24 when the wastewater in the reaction zone reaches a certain height. This is to prevent wastewater from entering the bottom of the tank 21 through the filter assembly 24 without undergoing the reaction. At this point, the input of wastewater and chemical reagents can be stopped. Then, the opening and closing plate 32 is flipped by the motor, so that the purified wastewater and sediment can flow into the filtration zone through multiple openings 311. The sediment generated by the reaction can be filtered by the filter assembly 24 and remain on the surface of the filter assembly 24. The wastewater after the reaction and filtration can enter the bottom of the tank 21. A water pump can be installed at the outlet of the drain pipe 25 so that the filtered wastewater can be transported to the heat pump assembly 1 for heat exchange treatment.

[0038] The specific implementation scenario is as follows: First, wastewater is introduced into tank 21 through inlet pipe 22, allowing the wastewater to enter the reaction zone. Then, chemical agents are added into tank 21. The wastewater and chemical agents are then stirred and reacted by stirring component 23. When the wastewater in the reaction zone reaches a certain height, the opening and closing plate 32 is driven to flip, allowing the wastewater and sediment to flow through opening 311 to the filtration zone. The filtration component 24 filters the sediment in the wastewater, and the filtered wastewater can then be discharged through drain pipe 25 to the heat pump component 1 for heat exchange. After a period of use, if a large amount of sediment remains on the filtration component 24 and this sediment affects filtration, multiple opening and closing plates 32 can be driven to flip and close, separating the reaction zone from the filtration zone. Then, water can be sprayed from below the filter assembly 24 through the slag guiding component 51, so that the sludge on the filter assembly 24 can be carried away from the filter assembly 24 by the water spray. At the same time, the output end of the slag guiding component 51 and the guide plate 4 are driven by the linear drive component 52 to move in the tank 21, so that the sludge on the filter assembly 24 can be guided to one side of the filter assembly 24. Finally, the sludge can be discharged from the tank 21 by opening the valve on the sludge discharge pipe. In this way, the sludge can be guided and discharged in a way that avoids the problem of the sludge being scraped off by scraping directly, which would cause the sludge to be broken up and the fine particles of the scraped sludge to be directly transported to the heat pump assembly 1 through the filter assembly 24, causing the problem of scaling in the heat pump assembly 1.

[0039] It should also be noted that during this process, since the reaction zone and the filtration zone are separated by the separator 3, wastewater can still be introduced into the reaction zone and chemical agents can be added for reaction. At the same time, the filtered wastewater can be transported to the heat pump component 1 through the drain pipe 25. Therefore, the purification of wastewater and the heat exchange to the heat pump component 1 can still be affected while the sediment is being guided out of the tank 21, achieving the effect of cleaning sediment without stopping the machine. In addition, while guiding the sediment to move, the liquid level in the reaction zone is continuously decreasing because the filtered wastewater is being discharged into the heat pump component 1 through the drain pipe 25. As the liquid level drops, when it reaches the liquid level of the filter component 24, the valve of the sludge discharge pipe can be opened to directly discharge the sediment.

[0040] Further, please refer to the appendix to the instruction manual. Figure 3 and Figure 4 The stirring assembly 23 includes a stirring shaft 231 rotatably disposed inside the tank body 21. Multiple stirring rods 232 are fixedly disposed on the stirring shaft 231. Multiple liquid outlet holes 2321 are opened on the multiple stirring rods 232. The end of the stirring shaft 231 is rotatably connected to the dosing pipe 233. A rotary drive assembly 234 is disposed on the tank body 21. The output end of the rotary drive assembly 234 is connected to the stirring shaft 231.

[0041] It should be noted that the rotary drive component 234 can be a motor. The output end of the motor can be connected to the stirring shaft 231 through gear transmission. By driving the stirring shaft 231 to rotate, it can stir and mix the sewage and the reaction agent through the stirring rod 232. The reaction agent can be introduced into the dosing pipe 233 and discharged into the reaction zone from the liquid outlet 2321. By adding the reaction agent in this direction, it can effectively assist the uniform addition of the reaction agent and ensure its reaction and mixing with calcium and magnesium ions in the sewage.

[0042] Further, please refer to the appendix to the instruction manual. Figure 5 The sludge guiding assembly 51 includes an infusion assembly 511. The inlet and outlet of the infusion assembly 511 extend into the tank 21. The outlet of the infusion assembly 511 is connected to a hose 512. The outlet of the hose 512 is connected to a diversion pipe 513. Multiple nozzles 514 are connected to the diversion pipe 513. The outlets of the multiple nozzles 514 all point towards the filter assembly 24.

[0043] It should be noted that the sludge guiding component 51 can be a water pump. The sludge guiding component 51 draws sewage from the bottom of the filtration zone and delivers it to the diversion pipe 513 through the hose 512. Then, water can be sprayed from below the filter component 24 through multiple nozzles 514 to achieve the effect of carrying away the sediment from the filter component 24.

[0044] Further, please refer to the appendix to the instruction manual. Figure 5 The linear drive assembly 52 includes a drive component 521. A lead screw 522 is installed at the output end of the drive component 521. The lead screw 522 is threadedly connected to a first movable plate 523 and a second movable plate 524. A diverter pipe 513 is fixedly installed on the first movable plate 523. A sliding shaft is fixedly installed on one side of the second movable plate 524. One end of the sliding shaft is located inside the tank 21 and installed on one side of the guide plate 4.

[0045] It should be noted that the driving component 521 is a motor. The driving component 521 drives the lead screw 522 to rotate, which in turn connects the movable plate 523 to the lead screw 522 via a threaded engagement, allowing the nozzle 514 to move linearly within the tank 21. This effectively removes the sediment from the surface of the filter assembly 24, allowing the sediment to float in the wastewater in the filtration zone. Furthermore, the movable plate 524 connects to the lead screw 522 via a threaded engagement, which pushes the guide plate 4 across the surface of the filter assembly 24 via a sliding shaft. This guide plate 4 then guides the sediment removed from the surface of the filter assembly 24 to one side of the tank 21, where it is finally discharged through the slag discharge pipe.

[0046] To facilitate the removal of sediment, please refer to the instruction manual attached. Figure 5 and Figure 6The filter assembly 24 is set at an angle, and an adjustment assembly 53 is provided on one side of the guide plate 4. The adjustment assembly 53 includes a connecting block 531 fixedly set at the end of the slide shaft, and a fixing block 532 fixedly set on one side of the guide plate 4. The fixing block 532 is slidably sleeved on the connecting block 531, and an elastic element 533 is also provided on the connecting block 531. In the initial state, the elastic element 533 is in a stretched state.

[0047] It should be noted that the elastic element 533 is a spring, and the initial state is the position of the guide plate 4 before cleaning the sediment, as shown in the slag discharge mechanism 5. When the guide plate 4 is in this position, the spring is in a stretched state, so that when the guide plate 4 is pushed to move by the sliding shaft, the elastic deformation of the spring allows the bottom of the guide plate 4 to always be in contact with the surface of the filter assembly 24, thereby allowing the guide plate 4 to move along the inclined surface of the filter assembly 24.

[0048] Since the tank 21 is tank-shaped, in order to ensure that the two sides of the guide plate 4 installed inside the tank 21 always fit against the inner wall of the tank 21 and prevent sediment from flowing out from the sides, a telescopic component 6 is provided. This allows the two sides of the guide plate 4 to extend and retract as the guide plate 4 moves inside the tank 21, thus solving the above problem. For details, please refer to the appendix of the instruction manual. Figure 7 and Figure 8 The guide plate 4 includes a middle plate 41 and side plates 42 slidably disposed on both sides of the middle plate 41. A telescopic component 6 is provided inside the guide plate 4. The telescopic component 6 includes a bottom groove 61 opened at the bottom of the middle plate 41. A sliding plate 62 is fixedly disposed on the side of the two side plates 42 that are close to each other. The two sliding plates 62 are slidably disposed in the bottom groove 61. An elastic element 63 is disposed between the two sliding plates 62. In the initial state, the elastic element 63 is in a compressed state.

[0049] It should be noted that the elastic element 63 is a spring, and its initial state is as follows: Figure 7 As shown, this is the position of the guide plate 4 before cleaning the sediment. When the guide plate 4 is in this position, the spring is in a compressed state. When the guide plate 4 is pushed to move inside the tank 21, the elastic deformation of the spring allows the two side plates 42 to move away from the middle plate 41 and always stick to the inner wall of the tank 21 to prevent the sediment from flowing from one side of the guide plate 4 to the other side.

[0050] In the above technical solution, after the sediment is cleaned, the opening and closing plate 32 needs to be driven to flip open again, so that the sewage and sediment in the reaction zone can flow to the sediment filtration zone and be filtered by the filter assembly 24 in the filtration zone. However, during this process, when the opening and closing plate 32 opens instantly, the sewage in the reaction zone will instantly enter the filtration zone. At the same time, some of the sewage in the filtration zone has already been transported to the heat pump assembly 1. Therefore, the sewage level in the filtration zone is low at this time. As a result, the sewage in the reaction zone will instantly enter the filtration zone, causing the sediment to break into fine particles due to the instantaneous impact. These particles will pass through the filter assembly 24 and be transported to the heat pump assembly 1 along with the purified sewage. This causes the sediment to accumulate on the surface of the heat exchanger in the heat pump assembly 1 and gradually accumulate on the pipe wall, forming scale. This significantly reduces the heat transfer efficiency, leading to increased heat pump energy consumption and decreased operating efficiency. To address this, the present invention also proposes a buffer assembly 7 to buffer the sewage entering the filtration zone from the reaction zone when the opening and closing plate 32 is opened, reducing the problem of sediment breakage caused by instantaneous impact. For details, please refer to the appendix of the specification. Figure 9 The tank body 21 is also equipped with a buffer assembly 7, which includes multiple buffer plates 71 disposed below the partition plate 31. Multiple flow guide holes 711 are opened on the multiple buffer plates 71, and the multiple buffer plates 71 are evenly distributed in the vertical direction.

[0051] It should be noted that during the process of flipping the opening and closing plate 32, initially only the opening and closing plate 32 is driven to flip at a small angle, and as the sewage flows in, the opening and closing plate 32 is gradually driven to flip at a larger angle. At the same time, the multiple buffer plates 71 set up play a buffering role on the sewage entering the filtration zone, which reduces the problem of sediment breakage caused by instantaneous impact.

[0052] Since multiple buffer plates 71 are all arranged within the filtration area, their presence can interfere with the movement of the guide plate 4. To avoid this problem, this invention proposes an adjustment mechanism 8 to retract the multiple buffer plates 71 before the guide plate 4 moves, thus preventing interference. For details, please refer to the appendix of the specification. Figure 10 and Figure 11The bottom of the partition plate 31 is provided with a storage groove 312. The tank body 21 is also provided with an adjustment mechanism 8. The adjustment mechanism 8 is used to take multiple buffer plates 71 into the storage groove 312. The adjustment mechanism 8 includes a power component 81. The output end of the power component 81 is equipped with a connecting shaft 82. A winding wheel 83 is fixedly provided on the connecting shaft 82. Multiple annular grooves 831 are provided on the surface of the winding wheel 83 along the axial direction. A connecting piece 84 is fixedly provided in each of the multiple annular grooves 831. A sliding rod 85 is fixedly provided at the end of each of the multiple connecting pieces 84 away from the winding wheel 83. The multiple sliding rods 85 are slidably provided in the partition plate 31. The other end of the multiple sliding rods 85 is fixedly connected to the corresponding buffer plate 71. The multiple annular grooves 831 on the winding wheel 83 are evenly arranged in the horizontal direction, and the diameter of each annular groove 831 is different.

[0053] It should be noted that the power component 81 is a motor, which drives the connecting shaft 82 to rotate, causing the connecting shaft 82 to drive the winding wheel 83 to rotate. During the rotation, the winding wheel 83 winds up the connecting piece 84, which pulls the buffer plate 71 upward until all the buffer plates 71 are retracted into the receiving groove 312. This avoids interference between the guide plate 4 and the buffer plate 71. Furthermore, by using the different diameters of each annular groove 831, the multiple buffer plates 71 can be kept at different heights when they are lowered, thus ensuring the buffering effect on the sewage.

[0054] It should also be noted that the adjustment mechanism 8 can be configured as two sets, and the two sets of connecting shafts 82 are connected by a belt pulley drive to ensure the stable movement of the buffer plate 71.

[0055] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A wastewater pretreatment device for a wastewater source heat pump, characterized in that, include: A heat pump assembly and a pretreatment assembly, wherein the outlet of the pretreatment assembly is connected to the inlet of the heat pump assembly; The pretreatment component includes a tank, on which an inlet pipe, a filter assembly, and a drain pipe are provided. The tank is also equipped with a dosing pipe, and a stirring assembly is provided inside the tank. The tank is equipped with a partition assembly, which includes a partition plate fixedly installed inside the tank. Multiple hinged plates are hinged inside the partition plate. The partition plate and the hinged plates divide the tank into a reaction zone and a filtration zone. The reaction zone and the filtration zone are separated by the flipping of the hinged plates. The tank is also equipped with a guide plate that can move along the surface of the filter assembly. The tank is also equipped with a sludge discharge mechanism, which includes a sludge guiding component and a linear drive component. The sludge guiding component is used to spray water onto the filter assembly to carry the sediment off the surface of the filter assembly. The linear drive component is used to drive the water outlet of the sludge guiding component to move linearly at the bottom of the filter assembly. The linear drive component can also drive the guide plate to move along the surface of the filter assembly to guide the sediment carried away from the filter assembly to one side of the tank. A sludge discharge pipe is also provided on one side of the tank for discharging the sediment. The slag guiding assembly includes an infusion assembly. The inlet and outlet of the infusion assembly extend into the tank body, and the outlet of the infusion assembly is connected to a flexible hose. The outlet of the flexible hose is connected to a diversion pipe, and multiple nozzles are connected to the diversion pipe. The outlets of the multiple nozzles all point towards the filter assembly. The linear drive assembly includes a drive component, and a lead screw is installed at the output end of the drive component. The lead screw is threadedly connected to a first movable plate and a second movable plate. The diverter is fixedly installed on the first movable plate, and a sliding shaft is fixedly installed on one side of the second movable plate. One end of the sliding shaft is located inside the tank and installed on one side of the guide plate. The filter assembly is inclined, and an adjustment assembly is provided on one side of the guide plate. The adjustment assembly includes a connecting block fixedly disposed at the end of the sliding shaft, and a fixing block is fixedly disposed on one side of the guide plate. The fixing block is slidably sleeved on the connecting block, and an elastic element is also provided on the connecting block. In the initial state, the elastic element is in a stretched state. The tank is also equipped with a buffer assembly, which includes multiple buffer plates disposed below the partition plate. Each buffer plate has multiple flow guide holes and the multiple buffer plates are evenly distributed in the vertical direction. The bottom of the partition plate is provided with a storage slot, and the tank body is also provided with an adjustment mechanism, which is used to store multiple buffer plates into the storage slot.

2. The wastewater pretreatment device for a wastewater source heat pump according to claim 1, characterized in that: The stirring assembly includes a stirring shaft rotatably mounted inside the tank, a plurality of stirring rods fixedly mounted on the stirring shaft, each stirring rod having a plurality of liquid outlet holes, and the end of the stirring shaft being rotatably connected to the dosing pipe. A rotary drive assembly is mounted on the tank, and the output end of the rotary drive assembly is connected to the stirring shaft.

3. The wastewater pretreatment device for a wastewater source heat pump according to claim 2, characterized in that: The guide plate includes a middle plate and side plates slidably disposed on both sides of the middle plate. A telescopic component is provided in the guide plate. The telescopic component includes a bottom groove formed at the bottom of the middle plate. A sliding plate is fixedly disposed on the side of the two side plates that are close to each other. The two sliding plates are slidably disposed in the bottom groove. An elastic element two is disposed between the two sliding plates. In the initial state, the elastic element two is in a compressed state.

4. The wastewater pretreatment device for a wastewater source heat pump according to claim 3, characterized in that: The adjustment mechanism includes a power component, the output end of which is equipped with a connecting shaft. A winding wheel is fixedly mounted on the connecting shaft. Multiple annular grooves are sequentially provided on the surface of the winding wheel along the axial direction. Connecting members are fixedly mounted in each of the multiple annular grooves. A sliding rod is fixedly mounted on the end of each of the multiple connecting members away from the winding wheel. The multiple sliding rods are slidably mounted in the partition plate. The other end of the multiple sliding rods is fixedly connected to the corresponding buffer plate.

5. A wastewater pretreatment device for a wastewater source heat pump according to claim 4, characterized in that: The winding reel has multiple annular grooves that are evenly arranged in the horizontal direction, and each annular groove has a different diameter.

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