Purifying air conditioner water seal anti-suck-back device and installation method

Abstract

The invention belongs to the technical field of hospital purification air conditioners, and particularly relates to a purification air conditioner water seal anti-suck-back device which comprises a water seal tank, a connecting pipe is fixedly installed on the lower portion of the left side of the water seal tank, the interior of the connecting pipe is communicated with the interior of the water seal tank, and the left end of the connecting pipe is communicated with an external unit. A water outlet pipe is fixedly installed on the upper portion of the right side of the water seal tank, the interior of the water outlet pipe communicates with the interior of the water seal tank, and a water seal assembly is arranged on the water seal tank. A U-shaped or S-shaped bent pipe is replaced by the water seal tank, the floating ball is arranged in the water seal tank, the water level in the water seal tank can be automatically monitored and controlled in cooperation with the liquid level sensor, the control water supplementing pipe and the water supplementing valve, effectiveness of water seal is ensured, and sealing failure or overflow caused by abnormal water level is prevented. Therefore, the device can carry out automatic monitoring and maintenance reminding, and accidents caused by serious omission are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of hospital purification air-conditioning, and specifically relates to a purification air-conditioning water seal anti-backflow device and an installation method thereof. Background Technique

[0002] When the central purification air-conditioning operates, especially during refrigeration, the evaporator will generate condensate, and this water needs to be drained out. If the drain pipe is not properly designed, or there are changes in the internal pressure of the system, such as negative pressure, it may cause external air or sewage to flow back into the unit. This not only affects the air-conditioning efficiency, but may also breed bacteria and even damage the equipment. At this time, the water seal anti-backflow device can play a role. Without a water seal, it may lead to poor drainage or the entry of external pollutants, affecting air quality. Especially in places like hospitals and laboratories where high air quality requirements are imposed, this device is particularly important.

[0003] The existing structure of the water seal is usually a U-shaped or S-shaped elbow, with water stored inside to form a seal. If the water in the water seal dries up, it will lose its function, so maintenance is also very important, and the water level needs to be checked regularly. However, relying on the spontaneous maintenance of maintenance personnel will inevitably have omissions, and for a hospital, once there is an omission, it may cause accidents. Therefore, the present invention provides a purification air-conditioning water seal anti-backflow device and an installation method thereof. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique.

[0005] The technical solution adopted by the present invention to solve its technical problems is: A purification air-conditioning water seal anti-backflow device described in the present invention includes a water seal box. A connecting pipe is fixedly installed below the left side of the water seal box. The inside of the connecting pipe is communicated with the inside of the water seal box, and the left end of the connecting pipe is communicated with an external unit.

[0006] An outlet pipe is fixedly installed above the right side of the water seal box. The inside of the outlet pipe is communicated with the inside of the water seal box, and a water seal assembly is arranged on the water seal box.

[0007] The water seal assembly includes a floating ball arranged inside the water seal box, a liquid level sensor arranged on the upper surface inside the water seal box, a controller fixedly installed below the right side of the water seal box, a water replenishing pipe fixedly installed on the left side of the top of the water seal box, a water replenishing valve fixedly installed on the outer surface of the water replenishing pipe. The inside of the water replenishing pipe is communicated with the inside of the water seal box, and both the water replenishing valve and the liquid level sensor are electrically connected to the controller.

[0008] Preferably, a support pipe is fixedly installed at the right end of the outlet pipe. The support pipe is installed on the ground through an installation assembly. A hose is fixedly installed at the right end of the support pipe, and a drain pipe is fixedly installed at the right end of the hose.

[0009] Preferably, the installation component includes a U-shaped installation rod disposed on the outer surface of the support pipe. Both ends of the U-shaped installation rod penetrate through the support frame. Nuts are threadedly connected to the lower surfaces of the outer surfaces of both ends of the U-shaped installation rod. The bottom of the support frame is fixedly installed on the ground through installation bolts.

[0010] Preferably, it further includes a disassembly component. The liquid level sensor is fixedly installed with the water seal box through the disassembly component. The disassembly component includes a through installation groove opened on the inner upper surface of the water seal box. An installation plate is disposed inside the installation groove. The installation plate is fixedly installed with the water seal box through a clamping component. The top of the liquid level sensor is installed with the bottom of the installation plate through a connection component.

[0011] Preferably, the clamping component includes a plurality of uniformly distributed sliding grooves opened on the inner side wall of the installation groove. A slider is slidably connected inside the sliding groove. A spring is disposed between the slider and the sliding groove. One side of the slider is fixedly connected with a connecting rod. One side of the connecting rod is fixedly connected with a clamping block. A limiting groove is opened on the outer surface of the installation plate. A plurality of uniformly distributed clamping grooves are opened inside the limiting groove. The clamping block is clamped inside the clamping groove. A plurality of uniformly distributed outlet grooves are opened on the inner side wall of the limiting groove. The lower surface inside the outlet groove extends to the outside of the installation plate.

[0012] Preferably, the connection component includes a threaded hole opened inside the installation plate. The lower surface inside the threaded hole extends to the outside of the installation plate. A threaded rod is threadedly connected inside the threaded hole. The bottom end of the threaded rod is fixedly installed with the top of the liquid level sensor. The top of the liquid level sensor is in contact with the bottom of the installation plate.

[0013] Preferably, the outer surface of the clamping block and the inner side walls of the clamping groove and the outlet groove are all set in an arc shape. The clamping block is adapted to the outlet groove. The top and bottom of the clamping block are both set in a flat shape.

[0014] Preferably, both the installation plate and the installation groove are set in a circular shape. A handle is fixedly connected to the center of the top of the installation plate.

[0015] An installation method for a purification air-conditioning water seal anti-backflow device, which uses the above-mentioned purification air-conditioning water seal anti-backflow device, includes the following steps:

[0016] S1. Place the water seal box on the ground and connect the water seal box to the pipeline of the unit through a connecting pipe, and connect and install a water outlet pipe above the upper right side of the water seal box;

[0017] S2. Place the float ball inside the water seal box and fixedly install the liquid level sensor on the inner upper surface of the water seal box to monitor the position of the float ball;

[0018] S3. Fix and install the makeup water pipe on the top of the water seal box and connect it to the water seal box. The makeup water pipe is connected to an external water pump for water replenishment. Meanwhile, install a makeup water valve on the outer surface of the makeup water pipe to control the water replenishment.

[0019] S4. Fix and install the controller under the right side of the water seal box. The controller receives the signal from the liquid level sensor and controls the makeup water valve for water replenishment.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. For the purifying air-conditioning water seal anti-backflow device and installation method described in the present invention, the water seal box replaces the U-shaped or S-shaped elbow pipe, and a floating ball is placed in the water seal box. The floating ball in the water seal box, combined with the liquid level sensor, control, makeup water pipe, and makeup water valve, can automatically monitor and control the water level in the water seal box, ensuring the effectiveness of the water seal, preventing seal failure or overflow caused by abnormal water level, so that the device can perform automatic monitoring and maintenance reminders, and avoid serious oversights and accidents.

[0022] 2. For the purifying air-conditioning water seal anti-backflow device and installation method described in the present invention, the clamping component enables the mounting plate to be disassembled from the inside of the mounting groove, facilitating the disassembly and installation of the mounting plate, and facilitating the disassembly, inspection, and replacement of the liquid level sensor installed at the bottom of the mounting plate through the connection component from the inside of the water seal box. At the same time, after the mounting plate is disassembled from the inside of the mounting groove, the water seal box can be opened, and it is convenient to take out and inspect and replace the floating ball inside the water seal box, so that the device can meet more usage requirements and is convenient for maintenance. Description of the Drawings

[0023] The present invention will be further described below with reference to the drawings.

[0024] Figure 1 is the partial front sectional view of the present invention;

[0025] Figure 2 is Figure 1 the enlarged view at A in

[0026] Figure 3 is the three-dimensional view of the water seal box in the present invention;

[0027] Figure 4 is the partial sectional view of the water seal box in the present invention;

[0028] Figure 5 is Figure 4 the enlarged view at B in

[0029] Figure 6 is the partial front sectional view of the water seal box in the present invention;

[0030] Figure 7 is Figure 6Enlarged view at position C in the [figure];

[0031] Figure 8 It is a schematic flow chart of the method of the present invention.

[0032] In the figure: 1, water seal box; 2, liquid level sensor; 3, make-up water pipe; 4, make-up water valve; 5, connecting pipe; 6, float; 7, controller; 8, outlet pipe; 9, mounting assembly; 91, U-shaped mounting rod; 92, nut; 10, hose; 11, support frame; 12, mounting bolt; 13, support pipe; 14, handle; 15, mounting groove; 16, mounting plate; 17, threaded rod; 18, threaded hole; 19, outlet groove; 20, limiting groove; 21, clamping block; 22, connecting rod; 23, chute; 24, slider; 25, spring; 26, clamping groove. Specific embodiments

[0033] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0034] Embodiment 1: As Figures 1 to 2 shown, a purification air-conditioning water seal anti-backflow device described in an embodiment of the present invention includes a water seal box 1. A connecting pipe 5 is fixedly installed below the left side of the water seal box 1. The inside of the connecting pipe 5 is communicated with the inside of the water seal box 1, and the left end of the connecting pipe 5 is communicated with an external unit;

[0035] An outlet pipe 8 is fixedly installed above the right side of the water seal box 1. The inside of the outlet pipe 8 is communicated with the inside of the water seal box 1. A water seal assembly is arranged on the water seal box 1;

[0036] The water seal assembly includes a float ball 6 disposed inside the water seal box 1. A liquid level sensor 2 is provided on the upper surface inside the water seal box 1. A controller 7 is fixedly installed below the right side of the water seal box 1. A water replenishing pipe 3 is fixedly installed on the left side of the top of the water seal box 1. A water replenishing valve 4 is fixedly installed on the outer surface of the water replenishing pipe 3. The inside of the water replenishing pipe 3 communicates with the inside of the water seal box 1. Both the water replenishing valve 4 and the liquid level sensor 2 are electrically connected to the controller 7. During operation, the unit pipeline is connected to the water seal box 1 through the connecting pipe 5. The water stored inside the water seal box 1 serves the function of water seal to prevent backflow. The condensed water that normally flows out of the unit can flow out from the connecting pipe 5 and the inside of the water seal box 1 through the water outlet pipe 8. Then, the float ball 6 inside the water seal box 1 can change its position with the change of the water level. The float ball 6 has a magnet inside. When the float ball 6 floats up and down with the change of the liquid level, the magnet will affect the liquid level sensor 2 provided on the upper surface inside the water seal box 1 and generate an electrical signal. Therefore, through the cooperation of the liquid level sensor 2 and the float ball 6, the change of the water level inside the water seal box 1 can be monitored. When the water level inside the water seal box 1 drops due to evaporation or leakage, the float ball 6 drops with the water level decrease, causing the liquid level sensor 2 to generate an electrical signal. When the liquid level sensor 2 detects that the float ball 6 has dropped below the normal range, it sends a signal to the controller 7. The controller 7 receives the signal and controls the water replenishing valve 4 to open, thereby triggering the water replenishing valve 4 to open and replenish water into the water seal box 1. The water replenishing pipe 3 is connected to an external water pump for water supply. Then, until the water level returns to the set height, the liquid level sensor 2 sends a signal again, causing the controller 7 to control the water replenishing valve 4 to close, and the water replenishment ends, ensuring that the water seal level always meets the sealing requirements. Furthermore, the device can automatically replenish water, prevent the water inside the water seal box 1 from drying up, and avoid gas backflow or pollution caused by water shortage inside the water seal box 1.

[0037] Meanwhile, when the condensed water drainage volume inside the unit is too large or external water backflows, the float ball 6 rises with the water level to trigger the overflow protection mechanism. After the liquid level sensor 2 monitors that the water level has risen beyond the normal range, it sends a signal to the controller 7. The controller 7 will send a signal to the control center and trigger an audible and visual alarm, etc., thereby reminding the operation and maintenance personnel to deal with it in time, avoiding the water seal box 1 from overflowing, and preventing equipment waterlogging or damage. When the water level is monitored to be low, it will also give an alarm reminder. The normal range as well as the too-high and too-low values are preset. In extreme cases (such as severe overflow or dryness), the controller 7 can control the air-conditioning unit to cut off the power supply and stop operating, preventing equipment damage (such as compressor water ingress, electrical short circuit, etc.) caused by water seal failure.

[0038] A support pipe 13 is fixedly installed at the right end of the water outlet pipe 8. The support pipe 13 is installed on the ground through an installation assembly 9. A hose 10 is fixedly installed at the right end of the support pipe 13, and a drain pipe is fixedly installed at the right end of the hose 10. During operation, the water discharged from the water outlet pipe 8 can be guided and discharged through the support pipe 13, the hose 10 and the drain pipe. The support pipe 13 is installed on the ground through the installation assembly 9, and the support pipe 13 is supported and installed through the installation assembly 9.

[0039] The installation assembly 9 includes a U-shaped installation rod 91. The U-shaped installation rod 91 is arranged on the outer surface of the support pipe 13. Both ends of the U-shaped installation rod 91 penetrate through the support frame 11. Nuts 92 are threadedly connected to the lower surfaces of the outer surfaces of both ends of the U-shaped installation rod 91. The bottom of the support frame 11 is fixedly installed on the ground through installation bolts 12. During operation, the support pipe 13 is supported and installed by sleeving the U-shaped installation rod 91 on the outer surface of the support pipe 13 and fixedly installing it with the support frame 11. The lower surfaces of both ends of the U-shaped installation rod 91 penetrate through the support frame 11 and are threadedly connected to the nuts 92, so that the support pipe 13 is stably installed on the top of the support frame 11, and the support frame 11 can stably support the support pipe 13.

[0040] Embodiment 2: As Figures 3 to 7 shown, compared with Embodiment 1, another implementation mode of the present invention is: further including a disassembly component. The liquid level sensor 2 is fixedly installed on the water seal box 1 through the disassembly component. The disassembly component includes a through installation groove 15 opened on the inner upper surface of the water seal box 1. An installation plate 16 is arranged inside the installation groove 15. The installation plate 16 is fixedly installed on the water seal box 1 through a clamping component. The top of the liquid level sensor 2 is installed on the bottom of the installation plate 16 through a connection component. During operation, the installation plate 16 can be disassembled from the inside of the installation groove 15 through the clamping component, which is convenient for the disassembly and installation of the installation plate 16, and is also convenient for the liquid level sensor 2 installed at the bottom of the installation plate 16 through the connection component to be disassembled, repaired and replaced from the inside of the water seal box 1. At the same time, after the installation plate 16 is disassembled from the inside of the installation groove 15, the water seal box 1 can be opened, and it is convenient to take out and repair and replace the floating ball 6 inside the water seal box 1, so that the device can meet more usage requirements and is convenient for maintenance.

[0041] The clamping component includes a plurality of sliding grooves 23 that are opened on the inner sidewall of the installation groove 15 and are evenly distributed. A slider 24 is slidably connected inside the sliding groove 23. A spring 25 is arranged between the slider 24 and the sliding groove 23. One side of the slider 24 is fixedly connected with a connecting rod 22. One side of the connecting rod 22 is fixedly connected with a clamping block 21. A limiting groove 20 is opened on the outer surface of the mounting plate 16. A plurality of evenly distributed clamping grooves 26 are opened inside the limiting groove 20. The clamping block 21 is clamped inside the clamping groove 26. A plurality of evenly distributed outlet grooves 19 are opened on the inner sidewall of the limiting groove 20. The lower surface inside the outlet groove 19 extends to the outside of the mounting plate 16; during operation, the clamping block 21 is clamped inside the clamping groove 26 so that the mounting plate 16 can be stably installed inside the installation groove 15, and the up and down movement of the mounting plate 16 is stably limited, and the mounting plate 16 is prevented from being moved out of the installation groove 15 by up and down movement. When the clamping block 21 is clamped inside the clamping groove 26, the spring 25 is in a compressed state. Therefore, the rebounding force of the spring 25 caused by the extrusion force enables the clamping block 21 to be squeezed and clamped inside the clamping groove 26, and enables the mounting plate 16 to be more stably installed inside the installation groove 15. At the same time, when the mounting plate 16 needs to be disassembled, the mounting plate 16 is rotated so that the mounting plate 16 rotates inside the installation groove 15. When the mounting plate 16 rotates, the clamping block 21 will be squeezed and rotated out of the clamping groove 26, and the connecting rod 22, the slider 24 and the spring 25 are contracted by extrusion. Then, as the mounting plate 16 rotates, the clamping block 21 rotates out of the clamping groove 26 and enters the limiting groove 20. When the mounting plate 16 continues to rotate so that the clamping block 21 corresponds to the outlet groove 19, the rebounding force of the spring 25 causes the slider 24, the connecting rod 22 and the clamping block 21 to move, and when the clamping block 21 moves into the outlet groove 19, the clamping block 21 can be disengaged from the limiting clamping of the mounting plate 16. Then, the mounting plate 16 is moved upward so that the clamping block 21 is moved out of the outlet groove 19, and the mounting plate 16 can be moved out of the installation groove 15. In this way, the liquid level sensor 2 can be moved out and disassembled from the water seal box 1, and then the liquid level sensor 2 can be disassembled, inspected or replaced from the bottom of the mounting plate 16 through the connecting component.

[0042] The connection component includes a threaded hole 18 formed inside the mounting plate 16. The lower surface inside the threaded hole 18 extends to the outside of the mounting plate 16. A threaded rod 17 is threadedly connected inside the threaded hole 18. The bottom end of the threaded rod 17 is fixedly installed with the top of the liquid level sensor 2. The top of the liquid level sensor 2 is in contact with the bottom of the mounting plate 16. During operation, after the mounting plate 16 and the liquid level sensor 2 are removed from the inside of the water seal box 1, hold the liquid level sensor 2 and rotate the mounting plate 16 to make the threaded rod 17 rotate out of the threaded hole 18. After the threaded rod 17 is completely removed from the threaded hole 18, the liquid level sensor 2 can be disassembled and separated from the mounting plate 16, so that the liquid level sensor 2 is convenient for disassembly, inspection and replacement. When reinstalling, thread the threaded rod 17 and the threaded hole 18 to install the liquid level sensor 2 and the mounting plate 16.

[0043] The outer surface of the clamping block 21, the inner side wall of the clamping groove 26 and the inner side wall of the outlet groove 19 are all set in an arc shape. The clamping block 21 is adapted to the outlet groove 19. The top and bottom of the clamping block 21 are both set in a flat shape. During operation, when the mounting plate 16 rotates, the clamping block 21 moves out of the clamping groove 26, and when the clamping block 21 is clamped inside the clamping groove 26, the up and down movement of the mounting plate 16 is limited.

[0044] The mounting plate 16 and the mounting groove 15 are both set in a circular shape. A handle 14 is fixedly connected to the center of the top of the mounting plate 16. During operation, it is convenient for the mounting plate 16 to rotate inside the mounting groove 15, and it is convenient to rotate the mounting plate 16 through the handle 14.

[0045] As Figure 8 shown, an installation method of a purification air-conditioning water seal anti-backflow device, which uses the above-mentioned purification air-conditioning water seal anti-backflow device, includes the following steps:

[0046] S1. Place the water seal box 1 on the ground and connect the water seal box 1 to the pipeline of the unit through the connecting pipe 5, and connect the outlet pipe 8 to the upper right side of the water seal box 1.

[0047] S2. Place the floating ball 6 inside the water seal box 1 and fixedly install the liquid level sensor 2 on the upper surface inside the water seal box 1 to monitor the position of the floating ball 6.

[0048] S3. Fix the water supply pipe 3 on the top of the water seal box 1 and connect it to the water seal box 1. The water supply pipe 3 is connected to an external water pump for water supply. At the same time, a water supply valve 4 is fixedly installed on the outer surface of the water supply pipe 3 to control the water supply.

[0049] S4. Fix the controller 7 under the lower right side of the water seal box 1. The controller 7 receives the signal of the liquid level sensor 2 and controls the water supply valve 4 for water supply.

[0050] The above front, rear, left, right, up, and down are all based on the Figure 1 in the attached drawings of the specification. Taking the observer's perspective as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0052] The above has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A purifying air-conditioning water seal anti-backflow device, comprising a water seal box (1), a connecting pipe (5) is fixedly installed below the left side of the water seal box (1), the inside of the connecting pipe (5) is communicated with the inside of the water seal box (1), and the left end of the connecting pipe (5) is communicated with an external unit; It is characterized in that: An outlet pipe (8) is fixedly installed above the right side of the water seal box (1), the inside of the outlet pipe (8) is communicated with the inside of the water seal box (1), and a water seal assembly is arranged on the water seal box (1); The water seal assembly includes a floating ball (6) arranged inside the water seal box (1), a liquid level sensor (2) is arranged on the upper surface inside the water seal box (1), a controller (7) is fixedly installed below the right side of the water seal box (1), a water replenishing pipe (3) is fixedly installed on the left side of the top of the water seal box (1), a water replenishing valve (4) is fixedly installed on the outer surface of the water replenishing pipe (3), the inside of the water replenishing pipe (3) is communicated with the inside of the water seal box (1), and both the water replenishing valve (4) and the liquid level sensor (2) are electrically connected to the controller (7).

2. The purifying air-conditioning water seal anti-backflow device according to claim 1, characterized in that: The right end of the outlet pipe (8) is fixedly installed with a support pipe (13), the support pipe (13) is installed on the ground through a mounting assembly (9), the right end of the support pipe (13) is fixedly installed with a hose (10), and the right end of the hose (10) is fixedly installed with a drain pipe.

3. The purifying air-conditioning water seal anti-backflow device according to claim 2, characterized in that: The mounting assembly (9) includes a U-shaped mounting rod (91), the U-shaped mounting rod (91) is arranged on the outer surface of the support pipe (13), both ends of the U-shaped mounting rod (91) penetrate through the support frame (11), nuts (92) are threadedly connected to the lower surfaces of the outer surfaces of both ends of the U-shaped mounting rod (91), and the bottom of the support frame (11) is fixedly installed on the ground through mounting bolts (12).

4. A purifying air-conditioning water seal anti-backflow device according to claim 3, characterized in that: It further includes a disassembly assembly, the liquid level sensor (2) is fixedly installed on the water seal box (1) through the disassembly assembly, the disassembly assembly includes a through mounting groove (15) opened on the upper surface inside the water seal box (1), an installation plate (16) is arranged inside the installation groove (15), the installation plate (16) is fixedly installed on the water seal box (1) through a clamping assembly, and the top of the liquid level sensor (2) is installed on the bottom of the installation plate (16) through a connecting assembly.

5. The purifying air-conditioning water seal anti-backflow device according to claim 4, characterized in that: The clamping assembly includes a plurality of sliding grooves (23) opened on the inner side wall of the installation groove (15) and evenly distributed, a slider (24) is slidably connected inside the sliding groove (23), a spring (25) is arranged between the slider (24) and the sliding groove (23), one side of the slider (24) is fixedly connected with a connecting rod (22), one side of the connecting rod (22) is fixedly connected with a clamping block (21), a limiting groove (20) is opened on the outer surface of the installation plate (16), a plurality of evenly distributed clamping grooves (26) are opened inside the limiting groove (20), the clamping block (21) is clamped inside the clamping groove (26), and a plurality of evenly distributed outlet grooves (19) are opened on the inner side wall of the limiting groove (20), and the lower surface inside the outlet groove (19) extends to the outside of the installation plate (16).

6. The purifying air-conditioning water seal anti-backflow device according to claim 5, characterized in that: The connecting component includes a threaded hole (18) formed inside the mounting plate (16). The lower surface inside the threaded hole (18) extends to the outside of the mounting plate (16). A threaded rod (17) is threadedly connected inside the threaded hole (18). The bottom end of the threaded rod (17) is fixedly installed with the top of the liquid level sensor (2). The top of the liquid level sensor (2) is in contact with the bottom of the mounting plate (16).

7. The purifying air-conditioning water seal anti-backflow device according to claim 6, characterized in that: The outer surface of the clamping block (21), the inner side wall of the clamping groove (26) and the inner side wall of the outlet groove (19) are all arranged in an arc shape. The clamping block (21) is adapted to the outlet groove (19). The top and bottom of the clamping block (21) are both arranged in a flat shape.

8. The purifying air-conditioning water seal anti-backflow device according to claim 7, characterized in that: Both the mounting plate (16) and the mounting groove (15) are arranged in a circular shape. A handle (14) is fixedly connected to the center of the top of the mounting plate (16).

9. An installation method of an anti-backflow device for a purified air-conditioning water seal, which uses an anti-backflow device for a purified air-conditioning water seal described in claim 8, and is characterized in that: Including the following steps: S1. Place the water seal box (1) on the ground and connect the water seal box (1) to the pipeline of the unit through the connecting pipe (5). And an outlet pipe (8) is connected and installed above the right side of the water seal box (1). S2. Place the floating ball (6) inside the water seal box (1) and fixedly install the liquid level sensor (2) on the inner upper surface of the water seal box (1) to monitor the position of the floating ball (6). S3. Fix the water replenishing pipe (3) on the top of the water seal box (1) and connect it to the water seal box (1). And the water replenishing pipe (3) is connected to an external water pump for water replenishment. At the same time, a water replenishing valve (4) is fixedly installed on the outer surface of the water replenishing pipe (3) to control the water replenishment. S4. Fix the controller (7) under the right side of the water seal box (1). Receive the signal of the liquid level sensor (2) through the controller (7) and control the water replenishing valve (4) for water replenishment.

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