An air source heat pump unit with easy replacement of filter components

Abstract

The present invention relates to the field of air heat source pumps, and in particular to an air source heat pump unit that is easy to replace filter components. At present, when replacing the filter components, most of the existing buffer water tanks shut down the entire air source heat pump unit and then replace it manually. The process of manually replacing the filter device is cumbersome and the replacement time is too long, which easily leads to a long waiting time for the air source heat pump, thereby affecting the working efficiency of the air source heat pump. An air source heat pump unit that is easy to replace the filter component includes a base, the upper part of the base is fixedly connected to a water inlet pipe, the inner side of the upper part of the water inlet pipe is fixedly connected to a solenoid valve, the lower part of the base is fixedly connected to a water outlet pipe, the base is provided with a conversion mechanism, and the conversion mechanism is provided with a clamping mechanism. Two filter cylinders are respectively fixed to the inner walls of two fitting sleeves, and the water passing through the fixed sleeve is filtered through two filter nets, thereby maintaining the purity of the water quality.

Description

Technical Field

[0001] The invention relates to the field of air heat source pumps, and in particular to an air source heat pump unit which is convenient for replacing a filter component. Background Art

[0002] The buffer water tank plays a vital role in the air source heat pump system. It is usually connected in series in the central air conditioning system to increase the water capacity of the system, thereby effectively solving the load fluctuation and frequent host startup problems caused by the system being too small.

[0003] At present, a buffer water tank is usually equipped with a filtering device to filter the water entering the buffer water tank. The filtering device of the buffer water tank needs to replace the filtering component after a period of filtration to maintain the filtering effect on the water quality of the buffer water tank. When replacing the filtering component of the current buffer water tank, most of the air source heat pump units are shut down first, and then replaced manually. The manual replacement operation is cumbersome and the replacement time is too long, which can easily cause the air source heat pump to wait for too long, thereby affecting the working efficiency of the air source heat pump. Summary of the invention

[0004] In order to overcome the shortcomings of the current buffer water tank, when replacing the filter component, most of the time the entire air source heat pump unit is shut down and then replaced manually, while the process of manual replacement of the filter device is cumbersome and the replacement time is too long, which easily leads to a long waiting time for the air source heat pump, thereby affecting the working efficiency of the air source heat pump, the technical problem of the present invention is to provide an air source heat pump unit that is easy to replace the filter component and can facilitate the rapid replacement of the filter device, thereby improving the replacement efficiency of the filter device, thereby improving the working efficiency of the air source heat pump.

[0005] The technical implementation scheme of the present invention is: an air source heat pump unit that is easy to replace the filter component, including a base, a water inlet pipe is fixedly connected to the upper part of the base, a solenoid valve is fixedly connected to the inner side of the upper part of the water inlet pipe, and a water outlet pipe is fixedly connected to the lower part of the base. A conversion mechanism is provided on the base, a clamping mechanism is provided on the conversion mechanism, a fixed sleeve is provided on the clamping mechanism, the conversion mechanism is used to drive the fixed sleeve to rotate, and a filtering device is provided on the clamping mechanism.

[0006] Optionally, the conversion mechanism includes a power motor, the lower part of the water outlet pipe is fixedly connected to the power motor, the output shaft of the power motor is fixedly connected to a power shaft, the power shaft is fixedly connected to a rotating block, both sides of the rotating block are fixedly connected to fixed frames, two sliding grooves are formed on the two fixed frames, and the two fixed frames are fixedly connected to a fixed sleeve on one side away from the power shaft.

[0007] Optionally, the sides of the two fixing frames away from the power shaft are both annular structures.

[0008] Optionally, the clamping mechanism includes a tension spring, and the upper and lower ends of the annular structure on one side of the two fixing frames are fixedly connected to the tension spring, the lower parts of the two fixing frames are fixedly connected to the servo motor, the output shafts of the two servo motors are fixedly connected to the screws, the upper and lower parts of the screws are provided with threads, the two threads on the screws are facing opposite directions, the two sliding grooves opened on the two fixing frames are slidably connected to the movable plates, the four movable plates are fixedly connected with fixing nuts, the two fixing nuts on the same side are threadedly connected to the screws on the same side, the upper and lower inner sides of the fixing sleeves are slidably connected to the fitting sleeves, the two fitting sleeves are respectively fixedly connected to the ends of the two tension springs away from the fixing frames, the two fitting sleeves are symmetrically arranged, and the two fitting sleeves have annular grooves on their sides close to each other.

[0009] Optionally, one end of the two tension springs away from the fixing frame is respectively located in the annular grooves of the two fitting sleeves.

[0010] Optionally, the filtering device includes a filter cylinder, a threaded groove is formed on the inner side of one end of the fitting sleeve away from each other, a threaded ring is fixedly connected to the outer side of the upper part of the filter cylinder, the filter cylinder is connected to the threaded groove of the fitting sleeve via the threaded ring, the two filter cylinders are symmetrically arranged, and a filter net is fixedly connected to the two filter cylinders, and the filter net is used to filter the water quality of the air heat pump unit.

[0011] Optionally, a locking mechanism is also included, which is arranged on the fitting sleeve, and is used to lock the water inlet pipe and the water outlet pipe, and the locking mechanism includes a threaded strip, and the outer sides of the ends of the water inlet pipe and the water outlet pipe that are close to each other are fixedly connected to the threaded strip, and the outer sides of the ends of the two fitting sleeves that are away from each other are also fixedly connected to the threaded strip, the water inlet pipe and the threaded strip on the fitting sleeve at the top cooperate with each other, and the water outlet pipe and the threaded strip on the fitting sleeve at the bottom cooperate with each other, and the outer sides of the ends of the two fitting sleeves that are away from each other are rotatably connected with a locking gear ring through the threaded strip, the upper and lower parts of the screw are fixedly connected with a fixed gear, and the fixed gear and the middle parts of the two fixed frames are rotatably connected with a transmission rod, and both ends of the transmission rod are fixedly connected with a transmission gear, and the two transmission gears are respectively meshed with the two fixed gears.

[0012] Optionally, a first sponge ring and a second sponge ring are further included, the lower part of the water inlet pipe and the upper part of the water outlet pipe are both grooved, the groove at the lower part of the water inlet pipe and the groove at the upper part of the water outlet pipe are both fixedly connected to the first sponge ring, the ends of the two fitting sleeves away from each other are both circular grooved, and the circular grooves of the two fitting sleeves are both fixedly connected to the second sponge ring.

[0013] The present invention has the following advantages: 1. Two filter cylinders are respectively fixed on the inner walls of two fitting sleeves, and the water passing through the fixed sleeves is filtered through two filter screens, thereby maintaining the purity of the water quality.

[0014] 2. The two fixed frames and the two fixed sleeves are driven to rotate by the power shaft, so that the two fixed sleeves can be quickly driven to be replaced synchronously, thereby improving the replacement efficiency of the two fixed sleeves, and the two fitting sleeves are driven by the screw to move in a direction away from each other, so that the two fitting sleeves can quickly fit with the water inlet pipe and the water outlet pipe after the replacement is completed quickly, thereby further improving the replacement efficiency of the two fixed sleeves.

[0015] 3. By cooperating with the threaded strips and locking toothed rings on the fitting sleeve, the water inlet pipe and the water outlet pipe, the replacement efficiency of the two fixed sleeves can be improved, and the water inlet pipe and the water outlet pipe can be locked with the two fitting sleeves respectively, thereby improving the tightness of the connection between the fixed sleeve and the water inlet pipe and the water outlet pipe after the replacement is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the base, water inlet pipe, solenoid valve and water outlet pipe of the present invention.

[0017] Figure 2 It is a partial three-dimensional structural schematic diagram of the clamping mechanism and the locking mechanism of the present invention.

[0018] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the water inlet pipe, the water outlet pipe, the fixing sleeve and the locking gear ring of the present invention.

[0019] Figure 4 It is a schematic diagram of the disassembled three-dimensional structure of the fixing sleeve, the fitting sleeve and the locking gear ring of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the filter cylinder, threaded ring and filter screen of the present invention.

[0021] Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of the first sponge ring and the second sponge ring of the present invention.

[0022] The markings of the components in the accompanying drawings are as follows: 1: base, 2: water inlet pipe, 3: solenoid valve, 4: water outlet pipe, 5: conversion mechanism, 51: power motor, 52: power shaft, 53: rotating block, 54: fixing frame, 55: fixing sleeve, 6: clamping mechanism, 61: tension spring, 611: servo motor, 62: screw rod, 63: moving plate, 64: fixing nut, 65: fitting sleeve, 7: filtering device, 71: filtering cylinder, 72: threaded ring, 73: filter net, 8: locking mechanism, 81: threaded strip, 82: locking gear ring, 83: fixed gear, 84: transmission rod, 85: transmission gear, 9: first sponge ring, 10: second sponge ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1: An air source heat pump unit that is easy to replace the filter assembly, such as Figure 1-Figure 5 As shown, it includes a base 1, a water inlet pipe 2 is welded on the upper part of the base 1, a solenoid valve 3 is welded on the inner side of the upper part of the water inlet pipe 2, a water outlet pipe 4 is welded on the lower part of the base 1, a conversion mechanism is provided on the base 1, a clamping mechanism is provided on the conversion mechanism, a fixed sleeve 55 is provided on the clamping mechanism, the conversion mechanism is used to drive the fixed sleeve 55 to rotate, and a filtering device is provided on the clamping mechanism.

[0025] The conversion mechanism includes a power motor 51, the power motor 51 is welded to the lower part of the water outlet pipe 4, the output shaft of the power motor 51 is fixedly connected to a power shaft 52, the power shaft 52 is fixedly connected to a rotating block 53, both sides of the rotating block 53 are welded with fixed frames 54, two sliding grooves are formed on the two fixed frames 54, and a fixed sleeve 55 is welded on the side of the two fixed frames 54 away from the power shaft 52, and the fixed sleeve 55 is used to install the filtering device.

[0026] The two fixing frames 54 have an annular structure at the sides away from the power shaft 52 .

[0027] The clamping mechanism includes a tension spring 61, and the upper and lower ends of the annular structure on one side of the two fixed frames 54 are fixedly connected with the tension spring 61, the lower parts of the two fixed frames 54 are fixedly connected with a servo motor 611, and the output shafts of the two servo motors 611 are fixedly connected with screws 62, and the upper and lower parts of the screws are provided with threads, and the two threads on the screws 62 are in opposite directions. The two sliding grooves opened on the two fixed frames 54 are slidably connected with movable plates 63, and the four movable plates 63 are welded with fixing nuts 64. The two fixing nuts 64 on the same side are threadedly connected to the screws 62 on the same side, and the upper and lower inner sides of the fixed sleeves 55 are slidably connected with fitting sleeves 65, and the two fitting sleeves 65 are respectively welded to the ends of the two tension springs 61 away from the fixed frames 54, and the two fitting sleeves 65 are symmetrically arranged, and the sides of the two fitting sleeves 65 close to each other are provided with annular grooves.

[0028] One end of the two tension springs 61 away from the fixing frame 54 is respectively located in the annular grooves of the two fitting sleeves 65 .

[0029] The filtering device includes a filter cylinder 71, and a threaded groove is opened on the inner side of the end of the fitting sleeve 65 that is away from each other. A threaded ring 72 is fixedly connected to the outer side of the upper part of the filter cylinder 71. The filter cylinder 71 is connected to the threaded groove of the fitting sleeve 65 through the threaded ring 72. The two filter cylinders 71 are symmetrically arranged, and a filter screen 73 is fixedly connected to the two filter cylinders 71. The filter cylinder 71 is used to install the filter screen 73, and the filter screen 73 is used to filter the water quality of the air heat pump unit.

[0030] When it is necessary to replace the filter component of the air source heat pump unit, the staff starts the solenoid valve 3, and the solenoid valve 3 is closed so that water no longer enters the water inlet pipe 2. Then, the filter cylinder 71 and the filter screen 73 are respectively placed on the two fitting sleeves 65 away from the water inlet pipe 2, and then the two filter cylinders 71 are rotated respectively. The threaded rings 72 on the two filter cylinders 71 are respectively threadedly connected with the threaded grooves on the inner walls of the two fitting sleeves 65, so that the two filter cylinders 71 are respectively fixed on the inner walls of the two fitting sleeves, and the water passing through the fixed sleeve 55 is filtered through the two filter screens 73, so as to keep the water quality pure and ensure the efficient operation of the unit. Then the power motor 51 is started, and the output shaft of the power motor 51 rotates forward to drive the power shaft 52, the rotating block 53 and the two The two fixing frames 54 rotate forward together, and the two fixing frames 54 drive the two servo motors 611, the two screws 62 and the two fixed sleeves 55 to change positions. The two fixing frames 54 and the two fixed sleeves 55 are driven to rotate by the power shaft 52, so that the two fixed sleeves 55 can be quickly driven to be replaced synchronously, thereby improving the replacement speed of the two fixed sleeves 55. After the position conversion of the fixed sleeves 55 is completed, the staff starts the servo motor 611 close to the water outlet pipe 4, and the output shaft of the servo motor 611 rotates forward to drive the screw 62 to rotate forward together. Under the limiting action of the fixing frame 54, the screw 62 rotates forward through the thread to drive the two fixing nuts 64 and the two moving plates 63 to move in the direction away from each other along the two moving grooves of the fixing plate, and is in The upper movable plate 63 moves upward, and the lower movable plate 63 moves downward. The two movable plates 63 push the two fitting sleeves 65 to move away from each other. The two fitting sleeves 65 slide along the inner diameter of the fixed sleeve 55. The two fitting sleeves 65 move away from each other and pull the two tension springs 61 respectively. The two tension springs 61 are stretched, and the upper fitting sleeve 65 fits with the lower part of the water inlet pipe 2, and the lower fitting sleeve 65 fits with the upper part of the water outlet pipe 4. Finally, the staff closes the solenoid valve 3 and the servo motor 611. The solenoid valve 3 no longer blocks the water inlet pipe 2. The external water flows into the fixed sleeve 55 through the water inlet pipe 2. The water in the fixed sleeve 55 passes through the two filter cylinders 71 and the filter screen. 73 flows into the outlet pipe 4, the servo motor 611 is turned off and no longer drives the screw 62 to rotate. Under the action of the screw 62, the two movable plates 63 drive the two fitting sleeves 65 to maintain the fitting state with the water inlet pipe 2 and the water outlet pipe 4, and the two fitting sleeves 65 are driven by the screw 62 to move in the direction away from each other, so that the two fitting sleeves 65 can quickly fit with the water inlet pipe 2 and the water outlet pipe 4 after the replacement is completed quickly, thereby further improving the replacement efficiency of the two fixed sleeves 55. When the two filter screens 73 need to be replaced after a period of filtration, the staff starts the servo motor 611 again, and the output shaft of the servo motor 611 drives the screw 62 to reverse, and the screw 62 reverses to drive the two movable plates 63 and the two fixing nuts 64 to reset.The two movable plates 63 are reset and no longer push the two fitting sleeves 65. The two fitting sleeves 65 are reset under the action of the tension spring 61. The staff starts the output shaft of the power motor 51 again to rotate. The output shaft of the power motor 51 drives the power shaft 52, the rotating block 53, the fixing frame 54 and the fixing sleeve 55 to rotate. After the fixing sleeve 55 is replaced, the filter cylinder 71 is finally rotated to remove the filter cylinder 71 and the filter screen 73 from the inner wall of the fixing sleeve 55.

[0031] Embodiment 2: Based on embodiment 1, Figure 2-Figure 4 and Figure 6 As shown, a locking mechanism is also included, which is arranged on the fitting sleeve 65, and is used to lock the water inlet pipe 2 and the water outlet pipe 4. The locking mechanism includes a threaded strip 81, and the outer sides of the ends of the water inlet pipe 2 and the water outlet pipe 4 that are close to each other are fixedly connected with the threaded strip 81, and the outer sides of the ends of the two fitting sleeves 65 that are away from each other are also fixedly connected with the threaded strip 81. The water inlet pipe 2 and the threaded strip 81 on the fitting sleeve 65 at the top cooperate with each other, and the water outlet pipe 4 and the fitting sleeve 65 at the bottom cooperate with each other. The threaded strips 81 on the mating sleeves 65 cooperate with each other, and the outer sides of the ends of the two mating sleeves 65 that are away from each other are rotatably connected with a locking toothed ring 82 through the threaded strips 81. The upper and lower parts of the screw rod 62 are welded with fixed gears 83. The fixed gears 83 and the middle parts of the two fixed frames 54 are rotatably connected with a transmission rod 84, and both ends of the transmission rod 84 are fixedly connected with a transmission gear 85. The two transmission gears 85 are respectively meshed with the two fixed gears 83, and the transmission gear 85 is used to drive the locking toothed ring 82 to rotate.

[0032] The screw rod 62 rotates forward through the fixed nut 64 and the two moving grooves on the fixed frame 54, so that the two moving plates 63 push the two fitting sleeves 65 to move in the direction away from each other, and the movement of the two fitting sleeves 65 also drives the locking toothed rings 82 to move in the direction away from each other. When the upper moving plate 63 moves to the highest point of the sliding groove of the fixed frame 54, and the lower moving plate 63 moves to the lowest point of the sliding groove of the fixed frame 54, the two locking toothed rings 82 are respectively engaged with the two transmission gears 8 on the transmission rod 84. 5 meshes, the screw rod 62 continues to rotate forward and no longer pushes the two moving plates 63 to move, the screw rod 62 rotates to drive the two fixed gears 83 to rotate forward, the two fixed gears 83 rotate forward and respectively drive the two transmission gears 85 to rotate reversely, the two transmission gears 85 rotate reversely and respectively drive the two locking toothed rings 82 to rotate forward, the two locking toothed rings 82 rotate forward and respectively move in opposite directions along the threaded strips 81 on the two fitting sleeves 65, the upper locking toothed ring 82 moves along the threaded strips 81 on the upper fitting sleeve 65 to the threaded strips 81 on the water inlet pipe 2. The strips 81, the locking toothed ring 82 at the bottom moves along the threaded strips 81 on the fitting sleeve 65 at the bottom to the threaded strips 81 on the water outlet pipe 4, and through the cooperation of the fitting sleeve 65, the threaded strips 81 on the water inlet pipe 2 and the water outlet pipe 4 and the locking toothed ring 82, the replacement efficiency of the two fixed sleeves 55 can be improved, and the water inlet pipe 2 and the water outlet pipe 4 can be locked with the two fitting sleeves 65 respectively, so as to improve the tightness of the connection between the fixed sleeve 55 and the water inlet pipe 2 and the water outlet pipe 4 after the replacement is completed. When filtering the screen 73, the staff will start the servo motor 611 to reverse, and the output shaft of the servo motor 611 reverses to drive the screw 62 and the two fixed gears 83 to reverse, and the two fixed gears 83 reverse to drive the two transmission gears 85 to rotate forward, and the two transmission gears 85 rotate forward to drive the two locking toothed rings 82 to reverse, and the two locking toothed rings 82 reverse to reset along the threaded strips 81 on the water inlet pipe 2, the water outlet pipe 4 and the fitting sleeve 65 respectively, and the two locking toothed rings 82 no longer lock the connection between the fixed sleeve 55 and the water inlet pipe 2 and the water outlet pipe 4 respectively.

[0033] Embodiment 3: Based on embodiment 2, Figure 6 As shown, a first sponge ring 9 and a second sponge ring 10 are also included. The lower part of the water inlet pipe 2 and the upper part of the water outlet pipe 4 are both grooved. The grooves at the lower part of the water inlet pipe 2 and the upper part of the water outlet pipe 4 are both fixedly connected with the first sponge ring 9. The ends of the two fitting sleeves 65 that are away from each other are both grooved. The circular grooves of the two fitting sleeves 65 are both fixedly connected with the second sponge ring 10. The first sponge ring 9 and the second sponge ring 10 are squeezed between them.

[0034] When the two fitting sleeves 65 move in a direction away from each other, they also drive the second sponge rings 10 on the two fitting sleeves 65 to move together. The two second sponge rings 10 squeeze the first sponge rings 9 on the water inlet pipe 2 and the water outlet pipe 4 respectively. The two second sponge rings 10 squeeze the two first sponge rings 9 respectively, thereby making the connection between the fixed sleeve 55 and the water inlet pipe 2 and the drain pipe tighter, thereby further improving the sealing between the fixed sleeve 55 and the water inlet pipe 2 and the drain pipe. When the two fitting sleeves 65 are reset, the two second sponge rings 10 are also driven to reset. When the two second sponge rings 10 are reset, they no longer squeeze the two first sponge rings 9.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air source heat pump unit that is easy to replace filter components, characterized by: The invention comprises a base (1), the upper part of the base (1) is fixedly connected to a water inlet pipe (2), the inner side of the upper part of the water inlet pipe (2) is fixedly connected to a solenoid valve (3), the lower part of the base (1) is fixedly connected to a water outlet pipe (4), the base (1) is provided with a conversion mechanism, the conversion mechanism is provided with a clamping mechanism, the clamping mechanism is provided with a fixed sleeve (55), the conversion mechanism is used to drive the fixed sleeve (55) to rotate, and the clamping mechanism is provided with a filtering device.

2. An air source heat pump unit that is easy to replace filter components as claimed in claim 1, characterized in that: The conversion mechanism comprises a power motor (51), the lower part of the water outlet pipe (4) is fixedly connected to the power motor (51), the output shaft of the power motor (51) is fixedly connected to a power shaft (52), the power shaft (52) is fixedly connected to a rotating block (53), both sides of the rotating block (53) are fixedly connected to fixed frames (54), two sliding grooves are formed on the two fixed frames (54), and the sides of the two fixed frames (54) away from the power shaft (52) are fixedly connected to fixed sleeves (55).

3. An air source heat pump unit that is easy to replace filter components as claimed in claim 2, characterized in that: The sides of the two fixing frames (54) away from the power shaft (52) are both annular structures.

4. The air source heat pump unit for facilitating replacement of filter components as claimed in claim 2, characterized in that: The pressing mechanism comprises a tension spring (61), the upper and lower ends of the annular structure on one side of the two fixing frames (54) are fixedly connected to the tension spring (61), the lower parts of the two fixing frames (54) are fixedly connected to the servo motor (611), the output shafts of the two servo motors (611) are fixedly connected to the screw rod (62), the upper and lower parts of the screw rod (62) are provided with threads, the two threads on the screw rod (62) are oriented in opposite directions, and the two sliding grooves provided on the two fixing frames (54) are slidably connected to the moving plate ( 63), the four movable plates (63) are fixedly connected with fixing nuts (64), the two fixing nuts (64) on the same side are threadedly connected to the screw rod (62) on the same side, the upper and lower inner sides of the fixing sleeve (55) are slidably connected with fitting sleeves (65), the two fitting sleeves (65) are respectively fixedly connected with one end of the two tension springs (61) away from the fixing frame (54), the two fitting sleeves (65) are symmetrically arranged, and the two fitting sleeves (65) are provided with annular grooves on the sides close to each other.

5. The air source heat pump unit for facilitating replacement of filter components as claimed in claim 4, characterized in that: One end of the two tension springs (61) away from the fixing frame (54) is located in the annular grooves of the two fitting sleeves (65) respectively.

6. The air source heat pump unit for facilitating replacement of filter components as claimed in claim 4, characterized in that: The filtering device comprises a filter cylinder (71), a thread groove is formed on the inner side of one end of the fitting sleeve (65) which is away from each other, a thread ring (72) is fixedly connected to the outer side of the upper part of the filter cylinder (71), the filter cylinder (71) is connected to the thread groove of the fitting sleeve (65) via the thread ring (72), the two filter cylinders (71) are symmetrically arranged, and a filter screen (73) is fixedly connected to the two filter cylinders (71), and the filter screen (73) is used to filter water quality of the air heat pump unit.

7. An air source heat pump unit that is easy to replace filter components as claimed in claim 6, characterized in that: The invention also comprises a locking mechanism, which is arranged on the fitting sleeve (65) and is used to lock the water inlet pipe (2) and the water outlet pipe (4). The locking mechanism comprises a threaded strip (81). The outer sides of the ends of the water inlet pipe (2) and the water outlet pipe (4) that are close to each other are fixedly connected to the threaded strip (81). The outer sides of the ends of the two fitting sleeves (65) that are far away from each other are also fixedly connected to the threaded strip (81). The water inlet pipe (2) and the threaded strip (81) on the fitting sleeve (65) located above cooperate with each other. The water outlet pipe (4) and the fitting sleeve (65) are fixedly connected to each other. The threaded strips (81) on the fitting sleeves (65) at the bottom cooperate with each other, and the outer sides of the ends of the two fitting sleeves (65) that are away from each other are rotatably connected to a locking toothed ring (82) through the threaded strips (81), and the upper and lower parts of the screw rod (62) are fixedly connected to a fixed gear (83), and the fixed gear (83) and the middle parts of the two fixed frames (54) are rotatably connected to a transmission rod (84), and both ends of the transmission rod (84) are fixedly connected to a transmission gear (85), and the two transmission gears (85) are respectively meshed with the two fixed gears (83).

8. An air source heat pump unit with easy replacement of filter components as claimed in claim 7, characterized in that: It also comprises a first sponge ring (9) and a second sponge ring (10); the lower part of the water inlet pipe (2) and the upper part of the water outlet pipe (4) are both provided with grooves; the grooves at the lower part of the water inlet pipe (2) and the grooves at the upper part of the water outlet pipe (4) are both fixedly connected to the first sponge ring (9); the ends of the two fitting sleeves (65) which are away from each other are both provided with circular grooves; the circular grooves of the two fitting sleeves (65) are both fixedly connected to the second sponge ring (10).

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