A scroll water source heat pump unit having a filter member

Abstract

The utility model belongs to water source heat pump unit technical field especially a scroll type water source heat pump unit with filter part, including power component and with power component fixed connection's plate heat exchanger, one side of plate heat exchanger is provided with primary filter device, primary filter device includes conical filter screen, conical filter screen carries out the filtration to the first water source that transports into plate heat exchanger. This scroll type water source heat pump unit with filter part, through setting senior filter device, can filter the water source after primary filter device filtration again, reduce the residue of impurity, through multiple plate filter screen carries out multiple filtration, through the automatic drop of cleaning scraper, can scrape off the impurity that adheres on plate filter screen, through the push of cleaning scraper makes mobile sleeve pipe can push sealing plate drop, the impurity and sewage that scrape down are discharged through blowdown hopper.

Description

Technical Field

[0001] This utility model relates to the technical field of water source heat pump units, and in particular to a vortex-type water source heat pump unit with a filter component. Background Technology

[0002] The core difference between water source heat pump units and other heat pumps (such as air source and ground source) lies in the form of the low-level heat source: air source uses air as the heat source and is greatly affected by outdoor temperature; ground source (soil source) uses soil as the heat source and requires buried pipes for heat exchange; while water source heat pumps directly exchange heat with water, resulting in higher heat exchange efficiency and less impact from fluctuations in ambient temperature.

[0003] Chinese Patent CN216716621U, with Publication No. CN219067933U, discloses a water source heat pump unit with a filtration structure. The unit includes a heat pump unit, an input pipe fixedly connected to the top right end of the heat pump unit, a first filter valve connected to the right end of the input pipe via a connecting flange, a second filter valve connected to the right end of the first filter valve via a connecting flange, a branch pipe fixedly connected to the middle of the bottom end of the first filter valve, a first guide plate fixedly connected to the middle of the inner wall of the top of the first filter valve, a filter screen fixedly connected to the bottom end of the second guide plate, and a second drain pipe fixedly connected to the bottom right end of the second filter valve. In this invention, water enters through the inlet pipe, passes through the filter screen of the second filter valve to filter larger impurities, then passes through the filter cartridge of the first filter valve to filter fine dust and debris, and finally undergoes bacterial and microbial filtration through a biological filter membrane. This results in good filtration, ensuring the water quality of the heat pump unit. The structure is simple and economical.

[0004] However, in the above-mentioned solution, filtration is achieved through a filter screen. The filter screen lacks an online self-cleaning function and cannot remove trapped impurities through backwashing or scraping while the unit is running. As a result, impurities can only continuously adhere to the surface of the filter screen and gradually accumulate. It is necessary for staff to regularly stop the machine for disassembly and cleaning. The filtration system is not equipped with a dedicated sewage discharge device, so it cannot discharge the impurities trapped by the filter screen in real time, nor can it flush and discharge the pollutants remaining in the pipeline before and after cleaning. This causes some impurities to re-enter the system during disassembly and assembly, or to adhere to the filter screen pores and form stubborn blockages. Long-term impurity residue and blockage will also accelerate the aging and damage of the filter screen, increase the frequency of filter screen replacement and maintenance costs, and may also cause impurities to enter core components such as circulating water pumps and compressors, causing component wear and failure, and shortening the overall service life of the unit. Utility Model Content

[0005] Based on the existing problems of vortex water source heat pump units that rely solely on filter screens for filtration, which lead to long-term impurity residue and blockage, accelerating filter screen aging and damage, increasing filter screen replacement frequency and maintenance costs, causing component wear and failure, and shortening the overall service life of the unit, this utility model proposes a vortex water source heat pump unit with a filter component.

[0006] This utility model proposes a vortex-type water source heat pump unit with a filtration component, including a power component and a plate heat exchanger fixedly connected to the power component. A primary filtration device is provided on one side of the plate heat exchanger. The primary filtration device includes a conical filter screen, which filters the initial water source delivered into the plate heat exchanger.

[0007] The plate heat exchanger is equipped with an advanced filtration device at its inlet end. The advanced filtration device includes a plate filter screen, which performs secondary filtration on the water source filtered by the primary filtration device.

[0008] Preferably, the primary filtration device further includes a support frame, which is disposed on one side of the plate heat exchanger. A hydrocyclone separator is fixedly installed on the outer surface of the support frame. The impurity outlet end of the hydrocyclone separator is fixedly connected to a filter tank. The inner wall of the filter tank is fixedly installed to the outer surface of the conical filter screen. The filter tank is fixedly installed on the outer surface of the support frame.

[0009] Through the above technical solution, the hydrocyclone separator is a conical metal tank with a water inlet in the tangential direction. It uses the strong centrifugal force generated by the tangential entry of high-pressure water into the tank to efficiently throw solid particles with a density greater than water towards the tank wall and let them settle to the bottom by gravity and enter the filter tank below. This stage can remove more than 90% of most heavy particles.

[0010] Preferably, a sewage pipe with a control valve is fixedly installed at one end of the conical filter screen. The outer surface of the sewage pipe is fixedly installed with the lower surface of the filter tank. A sludge concentration sensor is fixedly installed on the outer surface of the sewage pipe, and the probe of the sludge concentration sensor is fixedly inserted into the inner wall of the sewage pipe.

[0011] Through the above technical solution, the conical filter screen can filter the incoming sewage, so that the filtered water is collected in the filter tank. The sludge concentration sensor detects the sludge concentration in the sewage pipe. When the sludge concentration exceeds the set threshold, the control valve of the drainage pipe is opened to discharge the sewage.

[0012] Preferably, the advanced filtration device further includes a filter housing, which is fixedly installed on the outer surface of the support frame. The clean water outlet of the hydrocyclone separator is fixedly connected to the outer surface of the filter housing. A delivery pipe with a water pump is fixedly connected to the outer surface of the filter tank. One end of the delivery pipe is fixedly connected to the outer surface of the filter housing. The water outlet of the filter housing is fixedly connected to the water inlet of the power component. Through the above technical solution, the water initially filtered by the hydrocyclone separator and the water filtered by the cone filter screen enter the filter housing, are filtered by the plate filter, and are then transported to the power unit for use. The water in the filter tank is drawn by a water pump.

[0013] Preferably, the inner wall of the filter housing is fixedly installed with the outer surface of the plate filter screen, a limiting rod is fixedly installed on the inner wall of the filter housing, a cleaning scraper is slidably sleeved on the outer surface of the limiting rod, and the outer surface of the cleaning scraper is in contact with the outer surface of the plate filter screen.

[0014] Through the above technical solution, the cleaning scraper can be limited by the limiting rod. The Shudie cleaning scraper moves downward under the push to scrape off the impurities on the outer surface of the plate filter screen. At the same time, the cleaning scraper contacts the inner wall of the filter shell. When scraping, the scraped impurities are always kept below the cleaning scraper.

[0015] Preferably, a mounting bracket is fixedly installed on the upper surface of the filter housing, and a lifting screw is rotatably connected to the outer surface of the mounting bracket via a bearing. A drive motor is fixedly installed on the upper surface of the mounting bracket, and one end of the output shaft of the drive motor is fixedly installed to one end of the lifting screw. A push frame is threadedly connected to the outer surface of the lifting screw, and one end of the push frame passes through the inner wall of the filter housing and is fixedly installed to the upper surface of the cleaning scraper. The above technical solution uses a drive motor to rotate the lifting screw, which in turn drives the push frame to descend. The push frame then pushes the cleaning scraper to descend, automatically completing the cleaning of the plate filter screen.

[0016] Preferably, a movable sleeve is slidably sleeved on the outer surface of the limiting rod, a connecting spring is fixedly installed on the inner wall of the movable sleeve, the connecting spring is slidably sleeved on one end of the limiting rod, a sealing plate is fixedly installed at the lower end of the movable sleeve, the outer surface of the sealing plate is slidably inserted into the inner wall of the filter housing, and a sewage hopper with a control valve is fixedly installed on the outer surface of the filter housing.

[0017] With the above technical solution, the moving sleeve is pressed down by the descent of the cleaning scraper, and the moving sleeve pushes the sealing plate away from the filter housing, so that the scraped impurities can flow out through the groove on the lower surface of the filter housing and enter the sewage hopper for discharge.

[0018] The beneficial effects of this utility model are as follows: 1. By setting up a primary filtration device, larger particulate impurities in the water source can be filtered, reducing the filtration burden on the subsequent plate filter screen. The hydrocyclone separator has a tangential inlet. Utilizing the strong centrifugal force generated by the tangential entry of high-pressure water into the tank, solid particles with a density greater than water are efficiently thrown against the tank wall and settle to the bottom by gravity, entering the filter tank below. The wastewater is then filtered through a conical filter screen, thereby reducing water waste. At the same time, a sludge concentration sensor can detect the sludge concentration in the sewage pipe, facilitating the automatic discharge of sludge from the sewage pipe, thus reducing manual intervention. This solves the technical problem of existing vortex water source heat pump units relying solely on filter screen filtration. Long-term impurity residue and blockage accelerate filter screen aging and damage, increasing filter screen replacement frequency and maintenance costs, causing component wear and failure, and shortening the overall service life of the unit.

[0019] 2. By installing an advanced filtration device, the water source filtered by the primary filtration device can be filtered again, reducing the residue of impurities. Multiple plate filters are used for multiple filtrations, and the automatic descent of the cleaning scraper can scrape off the impurities attached to the plate filters. The movement of the cleaning scraper causes the moving sleeve to push the sealing plate down. The scraped impurities and wastewater are discharged through the sewage hopper, thus facilitating the automatic cleaning of the plate filters. This solves the technical problem of existing vortex water source heat pump units that only rely on filter screens for filtration. Long-term impurity residue and blockage will accelerate the aging and damage of the filter screens, increase the frequency of filter screen replacement and maintenance costs, cause component wear and failure, and shorten the overall service life of the unit. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a vortex-type water source heat pump unit with a filter component proposed in this utility model. Figure 2 This is a perspective view of the hydrocyclone separator structure of a vortex-type water source heat pump unit with a filter component proposed in this utility model. Figure 3 A perspective view of a conical filter structure for a vortex-type water source heat pump unit with a filter component proposed in this utility model; Figure 4 This is a perspective view of a plate filter structure for a vortex-type water source heat pump unit with a filter component proposed in this utility model. Figure 5A perspective view of the lifting screw structure of a vortex-type water source heat pump unit with a filter component proposed in this utility model; Figure 6 This is a perspective view of the sealing plate structure of a vortex-type water source heat pump unit with a filter component proposed in this utility model.

[0021] In the diagram: 1. Power unit; 11. Plate heat exchanger; 2. Support frame; 21. Hydrocyclone separator; 22. Filter tank; 23. Conical filter screen; 24. Sewage pipe; 25. Sludge concentration sensor; 3. Filter housing; 31. Conveying pipe; 32. Plate filter screen; 33. Limiting rod; 34. Cleaning scraper; 4. Mounting frame; 41. Lifting screw; 42. Drive motor; 43. Pushing frame; 5. Moving sleeve; 51. Connecting spring; 52. Sealing plate; 53. Sewage hopper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-6 A scroll-type water source heat pump unit with a filtration component includes a power unit 1 and a plate heat exchanger 11 fixedly connected to the power unit 1. The power unit 1 is a scroll compressor, preferably a Copeland ZR160KC-TFD-522, whose output end is connected to the refrigerant inlet of the plate heat exchanger 11 via a copper refrigerant pipe. The plate heat exchanger 11 is an Alfa Laval M10-B, used to achieve heat exchange between the water source and the refrigerant. The overall scroll-type water source heat pump unit consists of the power unit 1, the heat exchange core component, the refrigerant circulation control component, and the fluid circulation system. The system includes components, control system and protection devices, and auxiliary structural components. Among them, the power component 1 is a scroll compressor, the core heat exchange components include a water source heat exchanger and a user-side heat exchanger, the water source heat exchanger can be a plate heat exchanger 11, the refrigerant circulation control components include a throttling device, a four-way reversing valve, and auxiliary circulation components, the fluid circulation system components include a circulating water pump and valve assembly, the control system and protection devices include a main controller, sensors, protection devices, and an operation and display panel, and the auxiliary structural components include the unit casing, vibration damping and noise reduction components, and junction boxes and electrical components.

[0024] A primary filtration device is provided on one side of the plate heat exchanger 11. The primary filtration device includes a conical filter screen 23, which filters the initial water source delivered into the plate heat exchanger 11.

[0025] Specifically, the primary filtration device also includes a support frame 2, which is set on one side of the plate heat exchanger 11. A hydrocyclone separator 21, model FLS-80, with a processing capacity of 50 m³ / h, is fixedly installed on the outer surface of the support frame 2 and is made of Q235 carbon steel lined with epoxy resin.

[0026] The impurity outlet of the hydrocyclone separator 21 is fixedly connected to a filter tank 22 via a DN50 flange. The filter tank is made of 304 stainless steel with a wall thickness of 6mm. A pressure gauge interface can be installed on the top. The pressure gauge is a Brady Y-100. The inner wall of the filter tank 22 is fixedly installed to the outer surface of the conical filter screen 23 via a welded annular bracket. The gap between the filter screen and the tank wall is ≤2mm to ensure that all water flows through the filter screen. The filter tank 22 is fixedly installed on the outer surface of the support frame 2. The filter tank 22 can be fixed to the horizontal angle steel of the support frame 2 with 4 M16 bolts. A 30mm thick rock wool insulation layer can be wrapped around the outer wall of the filter tank 22 to prevent the water from freezing in winter.

[0027] Specifically, a drain pipe 24 with a control valve is fixedly installed at the lower end (bottom) of the conical filter screen 23 via a DN40 flange. The drain pipe 24 is made of 304 stainless steel, is 1.2m long, and has anti-corrosion treatment on its outer wall. The end of the drain pipe 24 is connected to the unit's main drain pipe. The control valve on the drain pipe 24 is an Emerson B230-100 electric ball valve. The outer surface of the drain pipe 24 is fixedly installed to the lower surface of the filter tank 22. A sludge concentration sensor 25 is fixedly installed on the middle outer surface of the drain pipe 24 via a threaded connection. The probe is inserted into the inner wall of the pipe, perpendicular to the direction of water flow, to a depth of 1 / 2 of the pipe's inner diameter, ensuring the representativeness of the test sample. The sludge concentration sensor 25 is used to monitor the concentration of impurities in the sewage pipe 24 in real time, avoiding waste of water due to blind sewage discharge. The sludge concentration sensor 25 is a Hach 1720E. A flow sensor for the sewage pipe 24, a Siemens 7ME6310-3KA11-1AA0 ultrasonic flow meter, can be installed on the sewage pipe 24 to verify whether the sewage discharge is normal, and is used in conjunction with the sludge concentration sensor 25.

[0028] Automatic sewage discharge trigger: The sludge concentration sensor 25 transmits the concentration signal to the main controller (Siemens S7-200SMARTCPUST40) in real time. When the concentration is ≥500mg / L (set threshold, which can be adjusted via touch screen), the controller determines that sewage discharge is required, opens the control valve of sewage discharge pipe 24, and monitors the flow sensor signal at the same time. If the flow rate is ≥1m³ / h, it indicates that the sewage discharge is normal. Sewage discharge continues until the concentration is ≤200mg / L (reset threshold), and the controller closes the control valve of sewage discharge pipe 24.

[0029] Manual sewage discharge: Users can manually trigger sewage discharge through the unit operation interface (the unit operation interface when the overall vortex water source heat pump unit is installed, which is the existing technology), model can be Weintek MT8102iE touch screen. After clicking manual sewage discharge, the controller will execute the above automatic sewage discharge process and automatically reset after the sewage discharge is completed.

[0030] By setting up a primary filtration device, larger particulate impurities in the water source can be filtered, reducing the filtration burden on the subsequent plate filter screen 32. The hydrocyclone separator 21 has a water inlet in the tangential direction. Utilizing the strong centrifugal force generated by the tangential entry of high-pressure water into the tank, solid particles with a density greater than water are efficiently thrown against the tank wall and settle to the bottom by gravity, entering the filter tank 22 below. The wastewater is then filtered through the conical filter screen 23, thereby reducing water waste. At the same time, the sludge concentration sensor 25 can detect the sludge concentration in the sewage pipe 24, facilitating the automatic discharge of sludge from the sewage pipe 24, thus reducing manual intervention. This solves the technical problem of existing vortex water source heat pump units relying solely on filter screen filtration, where long-term impurity residue and blockage accelerate filter screen aging and damage, increase filter screen replacement frequency and maintenance costs, cause component wear and failure, and shorten the overall service life of the unit.

[0031] The plate heat exchanger 11 is equipped with an advanced filtration device at its inlet end. The advanced filtration device includes a plate filter screen 32, which performs secondary filtration on the water source after the primary filtration device has filtered it.

[0032] Specifically, the advanced filtration device also includes a filter housing 3, made of 304 stainless steel, with an inspection cover on top and an observation window on the side for easy viewing of the filter screen status. The filter housing 3 is fixedly installed on the outer surface of the support frame 2. The clean water outlet of the hydrocyclone separator 21 is fixedly connected to the left inlet of the filter housing 3 via a DN65 seamless steel pipe (with a rubber expansion joint to reduce vibration transmission). The side wall outlet of the filter tank 22 is fixedly connected to a delivery pipe 31 with a water pump via a DN50 seamless steel pipe. The outer wall of the delivery pipe 31 is wrapped with a 50mm thick centrifugal glass wool insulation layer. To prevent temperature loss, the water pump's inlet is fixedly connected to the outer surface of the filter tank 22 via the delivery pipe 31, and the water pump's outlet is fixedly connected to the outer surface of the filter housing 3 via the delivery pipe 31. The water pump is a Wilo MHIL802 centrifugal pump with a mechanical seal. One end of the delivery pipe 31 is fixedly connected to the right inlet of the filter housing 3, and the outlet of the filter housing 3 is fixedly connected to the inlet of the power component 1. A one-way valve can be installed on the delivery pipe 31 to prevent backflow of water. The one-way valve is a Spirax Sarco CR45 check valve to prevent backflow from causing impurities to be reintroduced.

[0033] Specifically, the inner wall of the filter housing 3 is fixedly installed to the outer surface of the plate filter screen 32. The three layers of plate filter screen 32 are arranged sequentially along the water flow direction. Each layer is made of polypropylene melt-blown filter element with pore sizes of 20μm, 10μm, and 5μm respectively. They are fixed with a tenon and mortise structure for easy individual replacement. The spacing between adjacent filter screens is 100mm. The plate filter screen 32 performs secondary fine filtration on the water source after primary filtration, intercepting fine particles (such as clay and algae spores) and some colloidal impurities, ensuring that the turbidity of the water entering the cooling / heat exchange circuit of the power component 1 is ≤5NTU, meeting the requirements of the unit. Regarding the water quality requirements of the core components, limit rods 33 are welded to the four corners of the inner wall of the filter housing 3. The material is 304 stainless steel with chrome plating to reduce the coefficient of friction. A cleaning scraper 34 is slidably sleeved on the outer surface of the limit rod 33. The main body is made of nylon with a thickness of 20mm, and a 5mm thick nitrile rubber scraper is fixed on the edge. The scraper has a contact degree of ≥95% with the surface of the plate filter screen 32 to ensure that there are no dead corners in the scraping. The outer surface of the cleaning scraper 34 is in close contact with the outer surface of the plate filter screen 32 with a contact pressure of 0.1MPa to avoid jamming due to excessive tightness or incomplete cleaning due to excessive looseness.

[0034] Specifically, the upper surface of the filter housing 3 is fixedly mounted with a mounting bracket 4 made of Q235 carbon steel and hot-dip galvanized. The top crossbeam of the mounting bracket 4 is rotatably connected to a lifting screw 41 via a deep groove ball bearing (model 6205). The lifting screw 41 is made of 45# steel and heat-treated to a hardness of HRC28-32. The lower end of the screw is connected to the push frame 43 via a coupling. A folding protective sleeve covering the lifting screw 41 is fixedly mounted on the outer surface of the mounting bracket 4 to prevent dust from entering the lifting screw 41. The upper surface of the mounting bracket 4 is fixedly mounted with a drive motor 42, model Panasonic M9GA50, via bolts. B is a geared motor with an electromagnetic brake that brakes immediately upon power failure to prevent the scraper from falling and ensures stable screw speed. One end of the output shaft of the drive motor 42 is fixedly installed to one end of the lifting screw 41 via a flexible coupling. The outer surface of the lifting screw 41 is threaded with a push frame 43 made of 304 stainless steel, with a screw nut in the middle and the lower end connected to the cleaning scraper 34. Both ends of the push frame 43 pass through the top guide hole of the filter housing 3 (with a copper sleeve inside the hole to reduce friction) and are fixedly installed to the upper surface of the cleaning scraper 34 with bolts, ensuring that the lifting action of the push frame 43 is synchronously transmitted to the cleaning scraper 34.

[0035] Specifically, a movable sleeve 5, made of 304 stainless steel, is slidably fitted onto the outer surface of the limiting rod 33 (located below the cleaning scraper 34). The inner wall of the movable sleeve 5 is polished to reduce friction with the limiting rod 33. A connecting spring 51, also made of 304 stainless steel with a stiffness coefficient of 5 N / mm, is welded and fixed to the top of the inner wall of the movable sleeve 5 to ensure that the sealing plate 52 is normally in the closed state. The connecting spring 51 is slidably fitted onto the lower end of the limiting rod 33, and the lower end of the connecting spring 51 contacts the stepped surface of the limiting rod 33 to prevent the spring from falling off. A sealing plate 52, made of 304 stainless steel, is fixedly installed by bolts and matches the drain port at the bottom of the filter housing 3. A 10mm thick nitrile rubber sealing gasket is fixed on the upper surface of the sealing plate 52 (with a sealing pressure ≥0.2MPa to ensure no leakage under normal conditions). The outer surface of the sealing plate 52 is slidably inserted into the inner wall of the filter housing 3. In order to detect the position of the sealing plate 52, a sealing plate 52 position sensor, model Banner QS18VN6LP photoelectric sensor, can be installed on the side wall of the filter housing 3 to detect whether the sealing plate 52 is open.

[0036] The outer surface of the filter housing 3 (below the sealing plate 52) is fixedly mounted with a sludge hopper 53 with a control valve via a flange. The hopper is made of 304 stainless steel and has an inclined bottom to facilitate the free flow of impurities. An observation window is provided on the side of the sludge hopper 53 to check the sludge discharge status. The control valve of the sludge hopper 53 is an Emerson B230-100.

[0037] By setting up an advanced filtration device, the water source filtered by the primary filtration device can be filtered again, reducing the residue of impurities. Multiple filtration is performed through multiple plate filter screens 32. At the same time, the cleaning scraper 34 automatically descends to scrape off the impurities attached to the plate filter screens 32. The moving sleeve 5 pushes the cleaning scraper 34 to push the sealing plate 52 down. The scraped impurities and sewage are discharged through the sewage hopper 53, which facilitates the automatic cleaning of the plate filter screens 32. This solves the technical problem of existing vortex water source heat pump units that only rely on filter screens for filtration. Long-term impurity residue and blockage will accelerate the aging and damage of the filter screens, increase the frequency of filter screen replacement and maintenance costs, cause component wear and failure, and shorten the overall service life of the unit.

[0038] Working principle: When the vortex water source heat pump unit is in use, the groundwater source is drawn in and enters the tangential inlet of the hydrocyclone separator 21 on the support frame 2. After entering the tank, the strong centrifugal force generated by the high pressure water flow tangentially enters the tank body, which efficiently throws solid particles with a density greater than water towards the tank wall and settles to the bottom by gravity and enters the filter tank 22 below. After being filtered by the conical filter screen 23 in the filter tank 22, the water source is drawn by the water pump on the delivery pipeline 31 and delivered into the filter housing 3. At the same time, the water filtered by the hydrocyclone separator 21 enters the filter housing 3 through the upper outlet end. After being filtered by multiple plate filter screens 32, the water source is delivered into the power unit 1. When it is necessary to clean up the accumulated impurities, the control valve on the sewage pipe 24 opens after the sludge concentration in the sewage pipe 24 exceeds the threshold set by the sludge concentration sensor 25, and the sludge is discharged. The plate filter screen 32 in the filter housing 3 can be set to be automatically cleaned periodically. The drive motor 42 on the mounting frame 4 is turned on, which drives the lifting screw 41 to rotate, thereby pushing the frame 43 to lower. This pushes the internal cleaning scraper 34 to scrape off the impurities attached to the plate filter screen 32 in contact with it. The scraped impurities are located below the cleaning scraper 34. When the lower surface of the cleaning scraper 34 contacts the moving sleeve 5 on the limit rod 33, it can push the moving sleeve 5 to descend. The connecting spring 51 inside the moving sleeve 5 is compressed. After the moving sleeve 5 pushes the sealing plate 52 away from the sewage outlet of the filter housing 3, the sewage with impurities enters the sewage hopper 53 below. After the control valve of the sewage hopper 53 is opened, the sewage is discharged.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vortex-type water source heat pump unit with a filter element, comprising a power component (1) and a plate heat exchanger (11) fixedly connected to the power component (1), characterized in that: A primary filtration device is provided on one side of the plate heat exchanger (11), the primary filtration device including a conical filter screen (23), the conical filter screen (23) filters the initial water source delivered into the plate heat exchanger (11). The plate heat exchanger (11) is equipped with an advanced filtration device at its inlet end. The advanced filtration device includes a plate filter screen (32), which performs secondary filtration on the water source filtered by the primary filtration device.

2. A vortex-type water source heat pump unit with a filter element according to claim 1, characterized in that: The primary filtration device also includes a support frame (2), which is located on one side of the plate heat exchanger (11). A hydrocyclone separator (21) is fixedly installed on the outer surface of the support frame (2). The impurity outlet end of the hydrocyclone separator (21) is fixedly connected to a filter tank (22). The inner wall of the filter tank (22) is fixedly installed on the outer surface of the conical filter screen (23). The filter tank (22) is fixedly installed on the outer surface of the support frame (2).

3. A vortex-type water source heat pump unit with a filter element according to claim 2, characterized in that: One end of the conical filter screen (23) is fixedly installed with a sewage pipe (24) with a control valve. The outer surface of the sewage pipe (24) is fixedly installed with the lower surface of the filter tank (22). A sludge concentration sensor (25) is fixedly installed on the outer surface of the sewage pipe (24). The probe of the sludge concentration sensor (25) is fixedly inserted into the inner wall of the sewage pipe (24).

4. A vortex-type water source heat pump unit with a filter element according to claim 3, characterized in that: The advanced filtration device also includes a filter housing (3), which is fixedly installed on the outer surface of the support frame (2). The clean water outlet of the hydrocyclone separator (21) is fixedly connected to the outer surface of the filter housing (3). The outer surface of the filter tank (22) is fixedly connected to a conveying pipe (31) with a water pump. One end of the conveying pipe (31) is fixedly connected to the outer surface of the filter housing (3). The water outlet of the filter housing (3) is fixedly connected to the water inlet of the power component (1).

5. A vortex-type water source heat pump unit with a filter element according to claim 4, characterized in that: The inner wall of the filter housing (3) is fixedly installed with the outer surface of the plate filter screen (32). A limiting rod (33) is fixedly installed on the inner wall of the filter housing (3). A cleaning scraper (34) is slidably sleeved on the outer surface of the limiting rod (33). The outer surface of the cleaning scraper (34) is in contact with the outer surface of the plate filter screen (32).

6. A vortex-type water source heat pump unit with a filter element according to claim 5, characterized in that: A mounting bracket (4) is fixedly installed on the upper surface of the filter housing (3). A lifting screw (41) is rotatably connected to the outer surface of the mounting bracket (4) via a bearing. A drive motor (42) is fixedly installed on the upper surface of the mounting bracket (4). One end of the output shaft of the drive motor (42) is fixedly installed with one end of the lifting screw (41). A push frame (43) is threadedly connected to the outer surface of the lifting screw (41). One end of the push frame (43) passes through the inner wall of the filter housing (3) and is fixedly installed on the upper surface of the cleaning scraper (34).

7. A vortex-type water source heat pump unit with a filter element according to claim 6, characterized in that: The outer surface of the limiting rod (33) is slidably sleeved with a movable sleeve (5), and the inner wall of the movable sleeve (5) is fixedly installed with a connecting spring (51). The connecting spring (51) is slidably sleeved with one end of the limiting rod (33). The lower end of the movable sleeve (5) is fixedly installed with a sealing plate (52). The outer surface of the sealing plate (52) is slidably inserted into the inner wall of the filter housing (3). The outer surface of the filter housing (3) is fixedly installed with a sewage hopper (53) with a control valve.

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