A regenerated water source heat pump anti-blocking filter device

Abstract

The application relates to the technical field of heat pump filtration, and particularly discloses a regenerated water source heat pump anti-blocking filter device, which comprises a partition plate and a filter core, further comprises an auxiliary assembly and a driving assembly; the auxiliary assembly comprises a mounting ring which is sleeved outside the filter core and rotationally matched with the partition plate, and a guide plate which is rotationally assembled on the mounting ring; a plurality of guide plates are arranged in the circumferential direction of the filter core, the guide plates are in arc shapes, and the connecting positions of the guide plates and the mounting ring are provided with rotating elements for connecting the guide plates and the mounting ring; the driving assembly is matched with the mounting ring to drive the rotation of the mounting ring; when backwashing, the water pressure in the filter core disappears, the guide plates abut against the outer side of the filter core under the action of the rotating elements, water flow channels are formed between the adjacent guide plates, the driving assembly drives the guide plates to rotate around the filter core through the mounting ring, and the water flow channels are synchronously moved in the circumferential direction to wash the filter core in the circumferential direction; the regenerated water source heat pump anti-blocking filter device has the effect of fully cleaning the filter core.

Description

Technical Field

[0001] This invention relates to the technical field of heat pump filtration, and specifically to a reclaimed water source heat pump anti-clogging filtration device. Background Technology

[0002] A reclaimed water source heat pump is a high-efficiency and energy-saving device that uses reclaimed water as a cold and heat source; it belongs to the category of water source heat pumps. The anti-clogging filter is a crucial pre-protection device in a reclaimed water source heat pump system. By intercepting impurities in the reclaimed water, it prevents them from entering subsequent core equipment such as heat exchangers and water pumps. This not only prevents pipe blockage and reduces wear and tear on equipment caused by impurities, thus extending its service life, but also ensures continuous and efficient heat exchange by the heat exchanger and improves the system's operational stability.

[0003] Patent document CN117138433B discloses an automatic backwash filter, including a tank. An inlet pipe is installed on the outer surface of the tank near its bottom, and an outlet pipe is installed on the outer surface of the tank near its top. A drain pipe extending into the tank is fixedly installed at the bottom of the tank. A partition is fixedly installed on the inner wall of the tank near its bottom. Multiple water injection holes are evenly opened in the circumferential direction on the upper surface of the partition. A fixing plate is fixedly installed on the inner wall of the tank above the outlet pipe. Multiple cylindrical filter elements are evenly installed in the circumferential direction between the fixing plate and the partition. The bottom of the filter element is open and connected to the water injection hole. A rotating shaft is fixedly installed at the top of the filter element. The top of the rotating shaft is set through the upper surface of the fixing plate. A rotating mechanism for driving the multiple filter elements to rotate is installed on the fixing plate.

[0004] During the backwashing operation, the drain pipe needs to be connected to the corresponding individual filter element separately. At the same time, a certain working water pressure is maintained inside the tank. Under this water pressure, the filtered clean water remaining in the tank will split. Part of the clean water continues to maintain the normal water outflow process and is continuously discharged through the liquid outlet pipe to ensure the continuity of subsequent water use. The other part of the clean water will flow back through the filter element that is currently in the backwashing state. With the help of the reverse impact force of the water flow, the contaminants trapped on the inner surface of the filter element are peeled off and washed away. Then, the contaminants are carried into the drain pipe connected to the filter element and finally discharged from the filter body, completing the backwashing cleaning of the individual filter element.

[0005] However, the following problems exist in this solution: Due to the inherent requirements of the multi-core backwash filter's water output protection design, the outlet pipe needs to be kept open continuously during the backwashing process to ensure uninterrupted normal water supply. This design causes the clean water in the tank to be diverted, with most of the water pressure being used to maintain the normal water flow rate of the outlet pipe. Consequently, the water flow pressure flowing in the reverse direction through the filter element to be backwashed is significantly diverted and weakened. The reverse impact force of the water flow is insufficient to fully remove the fine impurities trapped deep within the filter element, and can only achieve simple rinsing of some floating dust pollutants on the surface of the filter element. Ultimately, this seriously affects the backwashing cleaning effect of the filter element, causing the filter element to be unable to fully recover to its optimal permeability state. Under long-term operation, this will continuously reduce the overall filtration efficiency of the filter. Summary of the Invention

[0006] This invention provides a reclaimed water source heat pump anti-clogging filtration device, which aims to solve the problem that in the backwashing operation of existing reclaimed water source heat pump matching filtration devices, the filter element is easily not thoroughly cleaned due to insufficient backwashing water pressure, which in turn affects the filtration efficiency of the filter element.

[0007] The reclaimed water source heat pump anti-clogging filtration device of the present invention includes a partition plate located inside a tank and a filter element mounted on the partition plate, as well as an auxiliary component and a drive component. The auxiliary component includes: a mounting ring sleeved on the outside of the filter element and rotatably engaged with the partition plate, and a guide plate rotatably mounted on the mounting ring. Multiple guide plates are arranged circumferentially around the filter element, and the guide plates are designed to match the outer side of the filter element. A rotating component is provided at the connection between the guide plate and the mounting ring to connect the two and drive the guide plate to abut against the outer side of the filter element. The drive component cooperates with the mounting ring to drive its rotation. During backwashing, the water pressure inside the corresponding filter element disappears, and the guide plate abuts against the outer side of the filter element under the action of the rotating component, forming a water flow channel between adjacent guide plates. The drive component drives the guide plate to rotate around the filter element through the mounting ring, driving the water flow channel to move circumferentially synchronously to circumferentially flush the filter element.

[0008] Its effect lies in the coordinated operation of auxiliary and drive components, creating a linkage during the filter cartridge backwashing process to increase backwash water pressure and thus enhance the cleaning effect on the filter cartridge. Specifically, when performing backwashing on the target filter cartridge, the internal pressure of the filter cartridge is released, and the water in the tank flows back into the filter cartridge, flushing the impurities attached to the filter cartridge. The flushed impurities are then discharged outward with the water flow. During this process, as the internal pressure of the filter cartridge decreases, the guide plates rotate accordingly and come into contact with the outer wall of the filter cartridge. A channel structure that limits the water flow is formed between adjacent guide plates. By reducing the effective water flow area entering the filter cartridge, the local pressure of the backwash water flow is increased while the tank pressure remains stable. This enhances the flushing intensity of the water flow on the filter cartridge, effectively improving the problem of insufficient cleaning caused by insufficient pressure and significantly improving the overall backwashing cleaning effect of the filter cartridge.

[0009] Preferably, the partition plate includes an upper partition and a lower partition located at the upper and lower ends of the filter element, respectively. An opening is provided below the filter element, and an opening is also provided on the lower partition at the corresponding position of the filter element. A water inlet pipe, a drain pipe, and a cleaning pipe are provided on the side of the tank. The water inlet pipe and the cleaning pipe are both located below the lower partition, and the drain pipe is located between the upper partition and the lower partition. A connecting part is rotatably provided at the end of the cleaning pipe. During backflushing, the connecting part connects sequentially with the openings below multiple filter elements.

[0010] Its effect is that the filter element can be connected to the cleaning pipe through the rotating connecting part, so as to carry out subsequent cleaning.

[0011] Preferably, the tank body is provided with a control component, which includes a control element and a control shaft located at the output end of the control element. The control shaft passes through the upper partition and the lower partition in sequence and is connected to the connecting part. Multiple filter elements are arranged around the control shaft in a circumferential direction. The rotation radius of the connecting part is adapted to the radius of the circle formed by the circumferential arrangement of the filter elements.

[0012] Its effect is that the control component drives the connecting part to rotate through the control shaft, which can backwash multiple filter elements in sequence.

[0013] Preferably, a connecting plate is axially slidably mounted on the control shaft, and a connecting block is provided at the end of the connecting plate. The connecting block is located above the upper partition plate. The side of the connecting block near the lower partition plate is provided with multiple limiting grooves, which correspond one-to-one with multiple guide plates on the mounting ring. The side of the mounting ring away from the guide plates is provided with multiple limiting blocks. A middle rod is fixedly mounted on the limiting block. The middle rod passes through the mounting ring and is coaxially fixedly connected to the guide plate. When the guide plate abuts against the filter element, the limiting block and the limiting groove are engaged to fix the guide plate. The side of the guide plate away from its own axis of rotation is provided with an extension. An abutment block is provided on the outer side of the guide plate. When the guide plate rotates outside the filter element in the direction toward the extension, the extension rotates to an inclined state and abuts against the abutment block to guide the water flow into the filter element.

[0014] Its effect is that, when the guide plate rotates around the filter element, the extension part can be set so that when the guide plate rotates, the extension part can rotate to an inclined state, which helps to guide the water flow into the filter element and improves the cleaning effect of the filter element.

[0015] Preferably, an elastic telescopic sleeve is provided between the connecting plate and the connecting block to connect the two. A pusher is provided inside the tank, and a pusher block is provided at the output end of the pusher. A top block is provided on the connecting plate, and an inclined top surface is provided on the side of the top block. The pusher block slides against the inclined top surface. The pusher drives the pusher block to abut against different positions on the inclined top surface, so as to drive the connecting plate and the connecting block to move downward, so that the limiting groove and the limiting block are engaged.

[0016] Preferably, the lower end of the elastic telescopic sleeve is provided with a fixed sleeve, the connecting block and the fixed sleeve are rotatably engaged, and when the limiting block and the limiting groove are engaged, the rotating shaft of the connecting block and the center line of the filter element are on the same straight line.

[0017] Its effect is that by setting the connecting block to rotate with the fixed sleeve, the fixed sleeve can rotate synchronously with the guide plate, so that the guide plate can rotate normally around the filter element while being restricted from rotating on its own.

[0018] Preferably, the output end of the control component is provided with a plug rod, the control shaft slides along its own length direction with the plug rod, the connecting part slides up and down in the cleaning tube, a top block two is provided on the control shaft, the side of the top block two is provided with an inclined top surface two, the inclined top surface two is inclined in the opposite direction to the inclined top surface one, and the pushing block simultaneously abuts against the inclined top surface one and the inclined top surface two.

[0019] Preferably, the control shaft is provided with an elastic element one connected to the connecting plate, the elastic element one being used to drive the limiting groove to separate from the limiting block, and the insertion rod is provided with an elastic element two cooperating with the end of the control shaft, the elastic element two being used to drive the connecting part to separate from the lower end of the filter element.

[0020] Preferably, the drive assembly includes: a drive member located above the upper partition plate, a drive sleeve rotatably sleeved outside the control shaft, a gear set assembled at the output end of the drive member and cooperating with the drive sleeve, a first gear coaxially and fixedly connected to the lower end of the drive sleeve, and a second gear coaxially and fixedly sleeved outside the mounting ring; the first gear meshes with the second gear.

[0021] Preferably, there are multiple gears 2, and each gear 2 corresponds to a filter element. The gear 1 meshes with multiple gears 2 simultaneously.

[0022] Beneficial effects:

[0023] This invention uses multiple guide plates that fit against the filter element during backwashing, forming a water flow channel between adjacent guide plates. This increases the water pressure when water enters the filter element, thereby improving the rinsing effect on the filter element. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the filter element in this invention.

[0026] Figure 3 This is a schematic diagram showing the positional relationship between the guide plate and the filter element of the present invention.

[0027] Figure 4 This is a schematic diagram of the state when the guide plate is open in this invention.

[0028] Figure 5 This is a schematic diagram showing the state when the guide plate of the present invention is in contact with the filter element.

[0029] Figure 6 This is a schematic diagram of the driving component in this invention.

[0030] Figure 7 This is a partial exploded view of the guide plate and mounting ring in this invention.

[0031] Figure 8 This is a schematic diagram showing the positional relationship between the control shaft and the connecting part in this invention.

[0032] Figure 9 This is a partial exploded view of the connecting block and the limiting block in this invention.

[0033] Figure 10 This is a schematic diagram showing the state when the extension part and the abutment block are engaged in the present invention.

[0034] Figure label:

[0035] 1. Tank body; 11. Inlet pipe; 12. Drain pipe; 13. Cleaning pipe; 131. Connecting part; 2. Partition plate; 21. Upper partition plate; 22. Lower partition plate; 3. Filter element; 4. Auxiliary components; 41. Mounting ring; 42. Guide plate; 421. Extension part; 422. Abutment block; 423. Water flow channel; 5. Drive assembly; 51. Drive component; 52. Drive sleeve; 53. Gear one; 54. Gear two; 55. Gear set; 6. Control assembly; 61. Control component; 611. Insert rod; 62. Control shaft; 621. Elastic component one; 622. Elastic component two; 7. Connecting plate; 71. Connecting block; 72. Limiting groove; 73. Limiting block; 74. Intermediate rod; 75. Top block one; 76. Top block two; 8. Elastic telescopic sleeve; 81. Fixed sleeve; 9. Pushing component; 91. Pushing block. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1 to 10As shown, the reclaimed water source heat pump anti-clogging filtration device of the present invention includes a tank 1 and a partition plate 2, a filter element 3, an auxiliary component 4, a drive component 5, and a control component 6 installed in the tank 1. The partition plate 2 includes an upper partition plate 21 and a lower partition plate 22 arranged at intervals. The upper partition plate 21 and the lower partition plate 22 form a filtration area inside the tank 1. The filter element 3 is installed between the upper partition plate 21 and the lower partition plate 22 and is located in the filtration area. Openings are provided below the filter element 3 and on the lower partition plate 22 corresponding to the position of the filter element 3. A water inlet pipe 11, a drain pipe 12, and a cleaning pipe 13 are respectively provided on the side of the tank body 1. The water inlet pipe 11 and the cleaning pipe 13 are arranged below the lower partition 22. The drain pipe 12 is located between the upper partition 21 and the lower partition 22 and is connected to the filtration zone. The end of the cleaning pipe 13 is rotatably provided with a connecting part 131. The control component 6 cooperates with the connecting part 131 to drive it to rotate. The drive component 5 cooperates with the auxiliary component 4 to increase the pressure of the water flow into the filter element 3 when the filter element 3 performs backwashing operation, thereby enhancing the backwashing cleaning effect on the inner wall of the filter element 3 and preventing the filter element 3 from clogging.

[0038] During normal filtration, reclaimed water is introduced into the lower part of tank 1 through inlet pipe 11, passes through the corresponding opening of lower baffle 22 and enters the interior of filter element 3 from below. After being filtered by filter element 3, it flows into the filtration zone between upper and lower baffles 22 and is finally discharged through drain pipe 12, completing the filtration process. When backwashing maintenance of filter element 3 is required, drive component 5 drives connecting part 131 to rotate to cooperate with the opening at the bottom of designated filter element 3, so that filter element 3 and cleaning pipe 13 form a communication channel. The remaining filter elements 3 still maintain normal filtration conditions. Under the action of system water pressure, part of the clean filtered water in the filtration zone is continuously discharged normally through drain pipe 12 to ensure uninterrupted system water supply. The other part flows back into the interior of filter element 3 to be cleaned, performing high-pressure backwashing on filter element 3. The impurities and sewage generated during rinsing are discharged from tank 1 through cleaning pipe 13. By switching connecting part 131 with different filter elements 3 in sequence, backwashing operations can be completed for multiple filter elements 3 one by one without interrupting the overall filtration operation.

[0039] Reference Figure 3 , Figure 4 , Figure 6 , Figure 7The auxiliary component 4 includes a mounting ring 41 and a guide plate 42. The mounting ring 41 is sleeved on the outside of the filter element 3 and rotates in conjunction with the partition plate 2. The axis of rotation of the mounting ring 41 coincides with the central axis of the filter element 3, ensuring that the mounting ring 41 rotates circumferentially around the filter element 3. The guide plate 42 is rotatably mounted on the mounting ring 41. Multiple guide plates 42 are evenly distributed along the circumference of the filter element 3. The shape of the guide plate 42 is set as an arc structure that matches the outer curved surface of the filter element 3. This arc design allows the guide plate 42 to achieve surface-to-surface contact when it comes into contact with the filter element 3. A rotating component is provided at the connection between the guide plate 42 and the mounting ring 41 to connect the two and provide elastic force. The rotating component adopts a torsion spring structure (not shown in the figure). Its core function is to continuously apply elastic torque to the guide plate 42 toward the outside of the filter element 3, so that the guide plate 42 always tends to abut against the outside of the filter element 3, providing power support for the rapid reset and contact of the guide plate 42 during backwashing. When the guide plate 42 abuts against the filter element 3, the adjacent guide plates 42 are arranged at intervals to form the basic structure of the water flow channel 423.

[0040] The drive assembly 5 works in conjunction with the mounting ring 41 to drive the mounting ring 41 to rotate around its own axis, thereby causing all the guide plates 42 mounted on it to move synchronously, so as to realize the circumferential movement of the guide plates 42 around the filter element 3.

[0041] When the device is filtering normally, the clean water inside the filter element 3 flows outward under water pressure. When the water flows into the guide plate 42, it generates an outward thrust. This thrust overcomes the elastic torque of the torsion spring and pushes each guide plate 42 to open outward around its connection point with the mounting ring 41. At this time, the guide plate 42 separates from the side of the filter element 3 and will not block the normal water outflow of the filter element 3, ensuring that the filtration operation is smooth and efficient.

[0042] Reference Figure 3 , Figure 4 , Figure 5When filter element 3 needs backwashing, the connecting part 131 connects with the bottom of the corresponding filter element 3. After connection, the filter element 3 will stop flowing outward, and the backwash water will be injected into the interior of the filter element 3 in the opposite direction. At this time, the filtration zone outside the filter element 3 still maintains normal water pressure. As the filter element 3 stops flowing outward, the outward pushing force of the water flow on the guide plate 42 disappears. The guide plate 42 returns to its original position under the elastic torque of the torsion spring and abuts against the outside of the filter element 3. After multiple guide plates 42 are evenly distributed around the circumference of the filter element 3 and are all in contact with the side of the filter element 3, water flow channels 423 are formed between adjacent guide plates 42. These water flow channels 423 are evenly distributed. The water in the filtration zone will enter the interior of the filter element 3 in a concentrated and directional manner along the water flow channels 423 formed between adjacent guide plates 42, backwashing the inner wall and filter media of the filter element 3, thereby removing impurities that adhered to the interior of the filter element 3 during the filtration process. At the same time, the drive component 5 will start and drive the mounting ring 41 to slowly rotate around the central axis of the filter element 3. When the mounting ring 41 rotates, it will drive all the guide plates 42 on it to move around the filter element 3 in a circumferential direction. The water flow channel 423 formed between the guide plates 42 will also move circumferentially along with the guide plates 42. This circumferential movement allows the water flow channel 423 to cover the entire outer surface of the filter element 3, so that the backwash water can be evenly rinsed to every area of ​​the filter element 3, achieving a comprehensive circumferential rinsing of the filter element 3 and avoiding the occurrence of rinsing dead corners.

[0043] The backwash water flow channel 423 structure formed by the guide plate 42 can concentrate the dispersed water flow in the filtration zone into each narrow water flow channel 423 under the premise of constant water pressure in the filtration zone. By reducing the cross-sectional area of ​​water flow, the pressure of water flow entering the filter element 3 is increased, which effectively makes up for the common problem of insufficient water pressure during backwashing. This allows the backwash water flow to impact the inner wall of the filter element 3 with sufficient pressure, thoroughly removing stubborn impurities adhering to the inside of the filter element 3. This significantly improves the cleaning effect on the filter element 3, thereby extending the service life of the filter element 3 and ensuring the long-term stable filtration performance of the filtration device.

[0044] Reference Figure 6 , Figure 7 The drive assembly 5 includes: a drive component 51, a drive sleeve 52, a gear set 55, a first gear 53, and a second gear 54. The drive component 51 is mounted above the upper partition 21 and is a motor. The drive sleeve 52 is rotatably mounted on the partition, and the shaft of the drive sleeve 52 is parallel to the shaft of the mounting ring 41. The gear set 55 is mounted on the output end of the drive component 51 and consists of two meshing gears; one gear is coaxially fixed to the output end of the drive component 51, and the other gear is coaxially sleeved outside the drive sleeve 52. The first gear 53 is coaxially fixed to the lower end of the drive sleeve 52, and the second gear 54 is coaxially and fixedly sleeved outside the mounting ring 41. The first gear 53 and the second gear 54 mesh with each other.

[0045] During operation, the drive component 51 drives the drive sleeve 52 to rotate through the gear set 55. The drive sleeve 52 then drives the mounting ring 41 to rotate through the meshing of gear 1 53 and gear 2 54, ultimately causing the guide plate 42 to rotate around the filter element 3.

[0046] Reference Figure 2 , Figure 3 Multiple filter elements 3 are evenly arranged circumferentially around the control shaft 62, forming a ring-shaped distribution structure around the control shaft 62. Correspondingly, multiple gears 54 are also arranged circumferentially, with each gear 54 corresponding to one of the circumferentially arranged filter elements 3. A gear 53 is located within the ring-shaped area formed by the multiple gears 54, at the center of the ring, and its external teeth simultaneously mesh with the multiple circumferentially distributed gears 54, forming a gear transmission structure with central drive and circumferential synchronous transmission.

[0047] When the drive component 51 drives the drive sleeve 52 to rotate, the power is transmitted through the drive sleeve 52 to the gear 53 at the center. During rotation, the gear 53, through its meshing with multiple gears 54, synchronously drives all gears 54 to rotate in the same direction and at the same speed. Each gear 54 then drives multiple sets of guide plates 42 to achieve synchronous rotation. In addition, the rotation of the guide plates 42 will cause a certain disturbance to the water in the tank 1. This disturbance can gradually loosen the tightly attached impurities on the inner wall of the filter element 3, making it easier for subsequent impurity flushing and discharge.

[0048] Reference Figure 1 , Figure 6 , Figure 8 The control component 6 includes a control element 61 and a control shaft 62. The control element 61 is a motor, and the control shaft 62 is coaxially arranged at the output end of the control element 61 and rotates synchronously with it. The control shaft 62 passes through the upper partition 21 and the lower partition 22 sequentially along the axial direction, and its end is fixedly connected to the connecting part 131. The control shaft 62 forms a rotational engagement relationship with the upper partition 21 and the lower partition 22. The control shaft 62 is located in the central area surrounded by multiple filter elements 3. The drive sleeve 52 is rotatably sleeved on the outside of the control shaft 62, and the rotation axis of the drive sleeve 52 and the control shaft 62 are collinear to avoid motion interference between them. The rotation radius of the connecting part 131 matches the circumferential radius formed by the multiple filter elements 3 evenly arranged circumferentially, thereby ensuring that the rotation path corresponds precisely to the interface position of the filter element 3.

[0049] In operation, the control unit 61 outputs torque and drives the control shaft 62 to rotate, which in turn drives the connecting part 131 to rotate smoothly along a preset circumferential trajectory, so that the connecting part 131 can connect and cooperate with each filter element 3 in sequence to complete the backwashing operation of the filter element 3.

[0050] Reference Figure 6 , Figure 8 , Figure 9 A connecting plate 7 is axially slidably mounted on the control shaft 62, meaning the connecting plate 7 can move along the axis of the control shaft 62. A connecting block 71 is fixedly mounted at the end of the connecting plate 7. The connecting block 71 is located in the area above the upper partition 21. Multiple circumferentially evenly distributed limiting grooves 72 are machined on the surface of the connecting block 71 near the lower partition 22. The multiple limiting grooves 72 and the multiple guide plates 42 provided on the mounting ring 41 are in a one-to-one matching relationship in terms of position and quantity. Mounting rings 41 are provided at both the upper and lower ends of the filter element 3. The mounting ring 41 located above the filter element 3 has a back... On one side away from the guide plate 42, there are multiple limiting blocks 73 that are adapted to the limiting grooves 72; each limiting block 73 is fixedly connected to an intermediate rod 74, which passes through the mounting ring 41 along the axial direction and is coaxially fixed to the guide plate 42, so that the guide plate 42, the intermediate rod 74 and the limiting block 73 form a synchronous rotating integral structure; when the guide plate 42 rotates to the working position where it abuts against the end face of the filter element 3, the limiting block 73 and the corresponding limiting groove 72 on the connecting block 71 engage with each other to fix the guide plate 42, restrict the guide plate 42 from rotating, and ensure the stability of the cooperation state between the guide plate 42 and the filter element 3.

[0051] Reference Figure 5 , Figure 10 An extension 421 is mounted on the side of the guide plate 42 away from its own axis of rotation through a rotatable engagement. The extension 421 can rotate freely relative to the guide plate 42 at a certain angle. A stop block 422 is fixedly provided on the outer side of the guide plate 42 at a corresponding position. The stop block 422 is used to limit and support the rotation angle of the extension 421. When the mounting ring 41 drives the guide plate 42 to rotate outside the filter element 3 in the direction toward the extension 421, the extension 421 gradually rotates to an inclined state under the action of centrifugal force and water flow, and finally abuts stably with the stop block 422. The inclined extension 421 forms a smooth water flow guiding channel, guiding the water flow in the tank 1 into the filter element 3 in an orderly and directional manner, providing stable water flow conditions for filtration and backwashing operations.

[0052] During the backwashing process, the guide plate 42 on the filter element 3 rotates to fit against the surface of the filter element 3. At this time, the connecting plate 7 moves, causing the connecting block 71 to move closer to the limiting block 73, so that the limiting block 73 engages with the corresponding limiting groove 72. After the limiting and fixing is completed, the driving component 51 drives the guide plate 42 to rotate continuously in the direction towards the extension 421. During the rotation, the extension 421 gradually tilts and unfolds until the end away from the guide plate 42 is tightly abutted against the abutting block 422. After that, the extension 421 rotates around the filter element 3 synchronously with the guide plate 42. The extension 421 in the tilted state can guide the water flow in the tank 1, so that the water flow enters the interior of the filter element 3 at a specific angle, and the direction of the water flow entering the filter element 3 forms a certain tilt angle with the inner wall of the filter element 3. This oblique flushing method can effectively enhance the impact and peeling effect of the water flow on the impurities attached to the inner wall of the filter element 3, avoid the attachment of impurities, and improve the flushing and cleaning degree of the inner wall of the filter element 3 and the overall efficiency of the backwashing operation.

[0053] Reference Figure 6 , Figure 8 , Figure 9 An elastic telescopic sleeve 8 is provided between the connecting plate 7 and the connecting block 71. A pusher 9 is installed inside the tank body 1. The pusher 9 is a cylinder, and a pusher block 91 is fixedly installed at its output end. Driven by the pusher 9, the pusher block 91 can perform linear reciprocating motion in a set direction. A top block 75 is fixedly installed on the connecting plate 7. The top block 75 is fitted outside the control shaft 62 and can slide along the axial direction of the control shaft 62. An inclined top surface is formed circumferentially on the side of the top block 75. The inclined top surface is inclined, and the pusher block 91 maintains a sliding contact with the inclined top surface.

[0054] To facilitate the description of the engagement process between the limiting block 73 and the limiting groove 72, the rotation direction of the guide plate 42 around the filter element 3 is defined here, wherein the rotation of the guide plate 42 toward the extension 421 is forward rotation, and the opposite direction is reverse rotation.

[0055] When the pusher 9 operates and drives the pusher block 91 to move, the pusher block 91 slides and abuts against different positions on the inclined top surface. Utilizing the inclined guiding effect of the inclined top surface, the linear driving force of the pusher block 91 is converted into a downward driving force of the top block 75 along the control shaft 62, thereby driving the connecting plate 7 and the connecting block 71 connected to the connecting plate 7 via the elastic telescopic sleeve 8 to move downward synchronously. As the connecting block 71 moves downward, if the limiting groove 72 and the limiting block 73 do not correspond in the vertical direction, the limiting block 73 will abut against the lower end face of the connecting block 71. At the same time, the elastic telescopic sleeve 8 is compressed. At this time, the driveer 51 drives the guide plate 42 to reverse, causing the limiting block 73 to move relative to the connecting block 71 until the limiting block 73 rotates to the limiting groove 72. The elastic telescopic sleeve 8 then drives the connecting block 71 to move downward again, causing the limiting block 73 to engage with the limiting groove 72. Subsequently, the driveer 51 drives the guide plate 42 to rotate forward to perform auxiliary backflushing treatment on the filter element 3.

[0056] Reference Figure 9 The limiting block 73 is set to be arc-shaped on the side near the connecting block 71, so as to reduce the contact area between the limiting block 73 and the connecting block 71 when they come into contact, thereby reducing the friction. This allows the limiting block 73 to move relative to the connecting block 71 and engage with the limiting groove 72. At the same time, when the connecting block 71 and the limiting block 73 are in contact, the rotating component can still drive the guide plate 42 to rotate and fit with the filter element 3, so that the limiting groove 72 can engage with the limiting block 73 later.

[0057] Reference Figure 8 , Figure 9 The lower end of the elastic telescopic sleeve 8 is provided with a fixed sleeve 81. The connecting block 71 is rotatably engaged with the fixed sleeve 81, and the rotation axis of the connecting block 71 is collinear with the center line of the filter element 3. After the limiting block 73 and the limiting groove 72 are engaged, the connecting block 71 can rotate synchronously with the guide plate 42 during the forward rotation of the guide plate 42, thereby effectively avoiding interference with the normal rotation of the guide plate 42 around the filter element 3 due to the engagement of the limiting block 73 and the limiting groove 72.

[0058] Reference Figure 6 , Figure 8 The output end of the control component 61 is integrally formed with a plug rod 611. The plug rod 611 and the control shaft 62 form a stable sliding fit along their own axial direction, allowing the control shaft 62 to slide axially relative to the plug rod 611 while maintaining a reliable transmission connection between them. The control shaft 62 and the drive sleeve 52 can rotate relative to each other around their respective axes and can also slide relative to each other axially, avoiding motion interference between them. The connecting part 131 and the cleaning tube 13 also adopt a composite fit combining rotation and sliding. The connecting part 131 can rotate freely relative to the cleaning tube 13 and can also slide up and down along the cleaning tube 13.

[0059] Reference Figure 6 , Figure 8 , Figure 9 A second top block 76 is fixedly installed on the outer wall of the control shaft 62. The side of the second top block 76 is formed with a continuous inclined top surface 2 along the circumferential direction. The inclination direction of the second inclined top surface is opposite to that of the first inclined top surface 1 on the first top block 75. The two form a symmetrical and opposite inclined surface driving structure. The push block 91 is located between the first top block 75 and the second top block 76, and its two end faces are stably in contact with the first inclined top surface 1 and the second inclined top surface 2, respectively.

[0060] When the push block 91 moves, it simultaneously applies force to the top block 75 and the top block 76: on the one hand, it pushes the top block 75 downward, so that the limiting groove 72 corresponding to the top block 75 and the limiting block 73 engage with each other; on the other hand, it pushes the top block 76 upward, and the top block 76 moves upward synchronously with the control shaft 62, thereby driving the connecting part 131 to slide upward along the axial direction, so that the end of the connecting part 131 near the filter element 3 engages with the lower opening of the filter element 3, so that the connecting part 131 and the opening of the filter element 3 form a reliable sealing fit, effectively blocking the path of impurities leaking from the gap between the two, and preventing impurities from re-entering the tank 1.

[0061] The connecting plate 7 is axially slidably mounted on the control shaft 62, meaning that the connecting plate 7 can slide relative to the control shaft 62 and can also rotate synchronously with the control shaft 62. The control shaft 62 is provided with an elastic element 621 connected to the connecting plate 7. The elastic element 621 is used to separate the limiting groove 72 from the limiting block 73. The insertion rod 611 is provided with an elastic element 622 that cooperates with the end of the control shaft 62. The elastic element 622 is used to separate the connecting part 131 from the lower end of the filter element 3. Both the elastic element 621 and the elastic element 622 are springs.

[0062] In the initial state, the push block 91 does not apply force to the top block 75 and the top block 76. The elastic element 621 and the elastic element 622 drive the connecting plate 7 and the control shaft 62 to be in the initial position. At this time, the limiting groove 72 does not cooperate with the limiting block 73, and the connecting part 131 does not cooperate with the opening of the filter element 3. When it is necessary to backflush the filter element 3, the control shaft 62 rotates and drives the connecting part 131 and the connecting block 71 to rotate synchronously to the upper and lower ends of the same filter element 3. Then, the push block 91 moves and adjusts the position of the connecting part 131 and the connecting block 71 simultaneously through the top block 75 and the top block 76. After backflushing, the push block 91 resets, and the elastic element 621 and the elastic element 622 drive the connecting block 71 and the connecting part 131 to reset. The above operation is repeated to backflush the next filter element 3.

[0063] The implementation principle of this invention is as follows: When performing backwashing on the filter element 3, the connecting part 131 first rotates to the lower end position of the corresponding filter element 3, so that the inner cavity of the filter element 3 is connected to the connecting part 131, and the water pressure inside the filter element 3 is released accordingly. Subsequently, the rotating component drives the guide plate 42 to move closer to and fit against the side of the filter element 3, and a water flow channel 423 that allows water to pass through is naturally formed between the adjacent guide plates 42. Under the drive of the driving component 51, the guide plate 42 rotates around the filter element 3 in a circumferential motion, and the water flow channel 423 formed by the guide plates 42 also rotates around the filter element 3 synchronously. Since the multiple sets of guide plates 42 constrain the water flow cross section in the enclosed state, under the premise that the overall water pressure inside the tank 1 remains unchanged, the effective water flow area entering the filter element 3 can be effectively reduced, thereby significantly increasing the local pressure of the water flow when backwashing the filter element 3. This compensates for the lack of cleaning power caused by insufficient overall water pressure in the system, strengthens the flushing effect of the water flow on the inner wall and filter pores of the filter element 3, and thus improves the overall cleaning effect of the filter element 3.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A reclaimed water source heat pump anti-clogging filtration device, comprising a partition plate located inside a tank and a filter element mounted on the partition plate, characterized in that, It also includes auxiliary components and a drive component; the auxiliary components include: a mounting ring sleeved on the outside of the filter element and rotatably engaged with the partition plate, and a guide plate rotatably mounted on the mounting ring; multiple guide plates are arranged around the circumference of the filter element, and the guide plates are designed to match the outer side of the filter element. A rotating component is provided at the connection between the guide plate and the mounting ring to connect the two and drive the guide plate to abut against the outer side of the filter element; the drive component cooperates with the mounting ring to drive its rotation; during backwashing, the water pressure inside the corresponding filter element disappears, and the guide plate abuts against the outer side of the filter element under the action of the rotating component, forming a water flow channel between adjacent guide plates. The drive component drives the guide plate to rotate around the filter element through the mounting ring, driving the water flow channel to move synchronously circumferentially to perform circumferential rinsing of the filter element.

2. The anti-clogging filter device for reclaimed water source heat pumps according to claim 1, characterized in that, The partition plate includes an upper partition and a lower partition located at the upper and lower ends of the filter element, respectively. An opening is provided below the filter element, and an opening is also provided on the lower partition at the corresponding position of the filter element. A water inlet pipe, a drain pipe, and a cleaning pipe are provided on the side of the tank. The water inlet pipe and the cleaning pipe are both located below the lower partition, and the drain pipe is located between the upper partition and the lower partition. A connecting part is rotatably provided at the end of the cleaning pipe. During backflushing, the connecting part connects sequentially with the openings below multiple filter elements.

3. The anti-clogging filtration device for reclaimed water source heat pumps according to claim 2, characterized in that, The tank is equipped with a control assembly, which includes a control element and a control shaft located at the output end of the control element. The control shaft passes through the upper and lower partitions in sequence and is connected to the connecting part. Multiple filter elements are arranged around the control shaft in a circumferential manner. The rotation radius of the connecting part is adapted to the radius of the circle formed by the circumferential arrangement of the filter elements.

4. The anti-clogging filter device for reclaimed water source heat pumps according to claim 3, characterized in that, A connecting plate is axially slidably mounted on the control shaft. A connecting block is provided at the end of the connecting plate. The connecting block is located above the upper partition plate. Multiple limiting grooves are provided on the side of the connecting block near the lower partition plate. The multiple limiting grooves correspond one-to-one with multiple guide plates on the mounting ring. Multiple limiting blocks are provided on the side of the mounting ring away from the guide plates. A middle rod is fixedly installed on the limiting block. The middle rod passes through the mounting ring and is coaxially fixedly connected to the guide plate. When the guide plate abuts against the filter element, the limiting block and the limiting groove are engaged to fix the guide plate. An extension is provided on the side of the guide plate away from its own axis of rotation. An abutment block is provided on the outer side of the guide plate. When the guide plate rotates outside the filter element in the direction toward the extension, the extension rotates to an inclined state and abuts against the abutment block to guide the water flow into the filter element.

5. The anti-clogging filter device for reclaimed water source heat pumps according to claim 4, characterized in that, An elastic telescopic sleeve is provided between the connecting plate and the connecting block to connect the two. A pusher is provided inside the tank. A pusher block is provided at the output end of the pusher. A top block is provided on the connecting plate. An inclined top surface is provided on the side of the top block. The pusher block slides against the inclined top surface. The pusher drives the pusher block to abut against different positions on the inclined top surface, so as to drive the connecting plate and the connecting block to move downward, so that the limiting groove and the limiting block are engaged.

6. The anti-clogging filter device for reclaimed water source heat pumps according to claim 5, characterized in that, The lower end of the elastic telescopic sleeve is provided with a fixed sleeve. The connecting block and the fixed sleeve are rotatably engaged. When the limiting block and the limiting groove are engaged, the rotating shaft of the connecting block and the center line of the filter element are on the same straight line.

7. The anti-clogging filter device for reclaimed water source heat pumps according to claim 5, characterized in that, The output end of the control component is provided with a plug rod. The control shaft slides along its own length direction with the plug rod. The connecting part slides up and down in the cleaning tube. A top block two is provided on the control shaft. The side of the top block two is provided with an inclined top surface two. The inclined top surface two is inclined in the opposite direction to the inclined top surface one. The pushing block simultaneously abuts against the inclined top surface one and the inclined top surface two.

8. The anti-clogging filter device for reclaimed water source heat pumps according to claim 7, characterized in that, The control shaft is equipped with an elastic element 1 that is connected to the connecting plate. The elastic element 1 is used to drive the limiting groove to separate from the limiting block. The insertion rod is equipped with an elastic element 2 that cooperates with the end of the control shaft. The elastic element 2 is used to drive the connecting part to separate from the lower end of the filter element.

9. The anti-clogging filter device for reclaimed water source heat pumps according to claim 3, characterized in that, The drive assembly includes: a drive component located above the upper partition plate, a drive sleeve rotatably sleeved outside the control shaft, a gear set assembled at the output end of the drive component and cooperating with the drive sleeve, a gear one coaxially and fixedly connected to the lower end of the drive sleeve, and a gear two coaxially and fixedly sleeved outside the mounting ring; gear one meshes with gear two.

10. The anti-clogging filter device for reclaimed water source heat pumps according to claim 9, characterized in that, There are multiple gears, and each gear is set to correspond to a filter element. Gear 1 meshes with multiple gears simultaneously.

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