Condensate drain water seal device for avoiding ingress of outside air into a clean room

Abstract

The application provides a condensate drainage water seal device for avoiding external air from invading a clean room, and belongs to the technical field of air conditioner condensate water. The condensate drainage water seal device for avoiding external air from invading a clean room comprises a drainage pipe, a water trap, a chamber and a tee joint are sequentially arranged on the drainage pipe, the chamber is vertically arranged, a floating ball is movably arranged in the chamber, a water outlet is arranged on the side surface of the tee joint, the lower part of the tee joint is communicated with the chamber, a piston is movably arranged on the upper part of the tee joint, the piston is slidably connected with the inner wall of the chamber, and a pushing mechanism is arranged on the back surface of the piston. The application has the following effects: the floating ball is used to realize the reverse stopping effect, so that the external air can be prevented from entering the indoor through the drainage pipe; the piston is pushed into the chamber by the pushing mechanism, and whether the internal pressure of the chamber can be maintained is observed to determine the sealing condition of the floating ball, so that the daily maintenance and detection are facilitated, and the indoor air quality is ensured.

Description

Technical Field

[0001] This application relates to the field of air conditioning condensate technology, and more specifically, to a condensate drainage water seal device that prevents outside air from entering a clean room. Background Technology

[0002] The DCC condensate drain pipe in the cleanroom discharges directly to a collection well or ditch outside the cleanroom. Since the condensate pipe connects the inside and outside of the cleanroom, there is a risk of outside air intrusion affecting the cleanliness level. Even with the installation of a standard U-trap, the trap is empty during normal cleanroom operation, failing to provide a water seal and still posing a risk of outside air intrusion.

[0003] In response, Chinese patent application number CN202110591727.1 discloses a sealing and drainage mechanism for the condensate drain pipe of an air conditioning unit. This solution mainly achieves backflow prevention by setting a floating ball in the drain pipe, thus preventing air from entering the room through the condensate drain pipe and causing pollution.

[0004] However, in the process of implementing the technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems: After prolonged use, scale or foreign objects may accumulate at the float seal, affecting the seal and making it difficult to detect, which can easily pollute the indoor environment. Utility Model Content

[0005] To overcome the above deficiencies, this application provides a condensate drainage water seal device to prevent outside air from entering the cleanroom, aiming to improve the problems mentioned in the background art.

[0006] This application provides a condensate drainage water seal device to prevent outside air from entering a cleanroom. The device includes a drain pipe, a water trap, a chamber, and a tee sequentially arranged on the drain pipe. The chamber is vertically arranged, and a float ball is movably arranged inside the chamber. The side of the tee is a water outlet, and the lower part of the tee is connected to the chamber. A piston is movably arranged on the upper part of the tee, and the piston is slidably connected to the inner wall of the chamber. A pushing mechanism is provided on the back of the piston.

[0007] In one specific implementation, a drain outlet is provided at the bottom of the water trap.

[0008] In the above process, the drain outlet is used to periodically open and clean the dirt accumulated in the water trap.

[0009] In one specific implementation, the drain pipe is equipped with a clamp.

[0010] In the above process, the clamps fix the drain pipe to the exterior wall.

[0011] In one specific implementation, the chamber comprises upper and lower parts connected by a flange, the middle part of the chamber is spherical, and the float is located in the middle of the chamber.

[0012] In the above process, when the float rises, the space around the float increases, which helps to ensure the water flow channel and ensures that the condensate is discharged smoothly. The upper and lower flanges are connected to ensure a seal and also make it easy to open and clean and maintain the float and the internal space of the chamber. It should be noted that the chamber is made of transparent material so that it is possible to observe whether there is liquid inside the chamber, so as to avoid affecting the sealing test effect.

[0013] In one specific implementation, a conical mesh is provided in the cavity, and the mesh is wedged between the upper and lower parts.

[0014] In the above process, the edge of the mesh is clamped and held by the upper and lower parts of the chamber, which facilitates loading and unloading. When the float rises, it rests against the mesh. At this time, the float is located in the center of the circular chamber, ensuring that the float will not sway from side to side, which is conducive to the passage of condensate.

[0015] In one specific implementation, the pushing mechanism includes a maintenance cover and a connecting rod. The maintenance cover is threadedly connected to the upper part of the tee, the lower end of the connecting rod is fixedly connected to the piston, and a spring is provided between the piston and the maintenance cover.

[0016] In the above process, the spring pushes the piston into the chamber. Due to the sealing effect of the float, the pressure in the chamber increases to counteract the spring force. When the float seal fails, it cannot counteract the spring force, and the piston will directly insert to the bottom. In this embodiment, the mesh provides bottom limit for the piston.

[0017] In one specific implementation, the connecting rod includes upper and lower sections, the lower section is round and the upper section is elliptical, the inspection cover has an elliptical through hole that matches the upper section, and the connecting rod is provided with a scale.

[0018] In the above process, during normal operation, the upper end of the connecting rod is pulled out of the inspection cover and rotated, which can lock onto the inspection cover. At this time, the spring is compressed, the piston is located at the upper part of the tee, and the condensate flows out normally from the side outlet. When checking whether the float seal has failed, the connecting rod is rotated so that the upper part of the ellipse is aligned with the through hole. The spring pushes the piston into the upper end of the chamber, pressurizing the chamber. The scale exposed on the inspection cover is used to determine whether the float seal has failed. This is maintained for a period of time, and the scale is observed to determine the sealing condition of the float.

[0019] In one specific implementation, a handle is fixedly connected to the outer end of the connecting rod.

[0020] In the above implementation process, the handle makes it easy to hold and pull the piston and rotating linkage.

[0021] Compared with the prior art, the beneficial effects of this application are: the float ball achieves the backflow prevention function, which can prevent outside air from entering the room through the drain pipe; the piston is pushed into the chamber by the pushing mechanism to see if the pressure inside the chamber can be maintained, so as to judge the sealing condition of the float ball, which facilitates daily maintenance and inspection and ensures indoor air quality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the normal drainage state of the condensate drainage water seal device for preventing external air from entering the cleanroom provided in the embodiments of this application; Figure 2 A schematic diagram of the pressurization detection status of the condensate drainage water seal device for preventing external air from entering the cleanroom, provided in an embodiment of this application. Figure 3 A schematic diagram from the outside of the condensate drainage water seal device for preventing outside air from entering the cleanroom, provided in the embodiments of this application.

[0024] In the diagram: 10-Drain pipe; 11-Water trap; 12-Cavity; 13-Tee; 14-Drain outlet; 15-Screw mesh; 20-Float ball; 30-Piston; 40-Pushing mechanism; 41-Inspection cover; 42-Connecting rod; 43-Spring; 44-Scale; 45-Handle; 50-Clamp. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0026] Please see Figures 1-3This application provides a condensate drain water seal device to prevent outside air from entering a cleanroom. The device includes a drain pipe 10, on which a water trap 11, a chamber 12, and a tee 13 are sequentially arranged. The chamber 12 is vertically oriented, and a float 20 is movably disposed within it. The side of the tee 13 serves as a drain outlet, and the lower part of the tee 13 communicates with the chamber 12. A piston 30 is movably disposed on the upper part of the tee 13, and the piston 30 is slidably connected to the inner wall of the chamber 12. A pushing mechanism 40 is provided on the back of the piston 30. The float 20 serves as a backstop, preventing outside air from entering the cleanroom through the drain pipe 10. The pushing mechanism 40 pushes the piston 30 into the chamber 12 to check if the internal pressure can be maintained, thus determining the sealing condition of the float 20. This facilitates daily maintenance and inspection, ensuring indoor air quality.

[0027] Please see Figures 1-3 The bottom of the water trap 11 is provided with a drain outlet 14. The drain outlet 14 is used to periodically open and clean the dirt accumulated inside the water trap 11.

[0028] Please see Figures 1-3 The drain pipe 10 is equipped with a clamp 50. The clamp 50 fixes the drain pipe 10 to the exterior wall.

[0029] Please see Figures 1-3 The chamber 12 comprises upper and lower parts connected by flanges. The middle part of the chamber 12 is spherical, and the float 20 is located in the middle of the chamber 12. When the float 20 floats, the space around the float 20 increases, which helps to ensure the water flow channel and ensures the smooth discharge of condensate. The flange connection between the upper and lower parts ensures a seal and also facilitates opening to clean and maintain the float 20 and the internal space of the chamber 12. It should be noted that the chamber 12 is made of transparent material, allowing observation of whether there is liquid inside the chamber 12, so as not to affect the sealing test effect.

[0030] Please see Figures 1-3 A conical mesh 15 is installed inside the chamber 12, and the mesh 15 is held between the upper and lower parts. The edge of the mesh 15 is clamped and held by the upper and lower parts of the chamber 12 for easy installation and removal. When the float 20 floats, it rests against the mesh 15. At this time, the float 20 is located at the center of the circular chamber 12, ensuring that the float 20 does not sway from side to side, which is conducive to the passage of condensate.

[0031] Please see Figures 1-3The pushing mechanism 40 includes an inspection cover 41 and a connecting rod 42. The inspection cover 41 is threaded to the upper part of the tee 13, and the lower end of the connecting rod 42 is fixedly connected to the piston 30. A spring 43 is provided between the piston 30 and the inspection cover 41. The spring 43 pushes the piston 30 into the chamber 12. Due to the sealing effect of the float 20, the pressure in the chamber 12 increases to counteract the elastic force of the spring 43. When the float 20 fails to seal, it cannot counteract the elastic force of the spring 43, and the piston 30 will directly insert to the bottom. In this embodiment, the mesh 15 provides a bottom limit for the piston 30.

[0032] Please see Figures 1-3 The connecting rod 42 comprises two sections, the lower section being round and the upper section being elliptical. The inspection cover 41 has an elliptical through-hole that matches the upper section. The connecting rod 42 is marked with a scale 44. During normal operation, the upper end of the connecting rod 42 is pulled out of the inspection cover 41 and rotated, locking onto the cover. At this time, the spring 43 is compressed, and the piston 30 is positioned above the tee 13, allowing condensate to flow normally from the side outlet. When checking for a failed seal on the float 20, the connecting rod 42 is rotated so that the elliptical upper section aligns with the through-hole. The spring 43 pushes the piston 30 into the upper part of the chamber 12, pressurizing the chamber. The scale 44 exposed on the inspection cover 41 is used to determine if the float 20's seal has failed. This process is maintained for a period of time, and the change in the scale 44 is observed to assess the sealing condition of the float 20.

[0033] Please see Figures 1-3 A handle 45 is fixedly connected to the outer end of the connecting rod 42. The handle 45 facilitates holding and pulling the piston 30 and rotating the connecting rod 42.

[0034] The working principle of the condensate drain water seal device to prevent external air from entering the cleanroom is as follows: Condensate enters the drain pipe 10 and first enters the trap 11 to block air. When the water level in the trap 11 rises, it pushes open the float 20 and drains through the chamber 12 and tee 13 from the side. When it is necessary to monitor the sealing of the float 20, first observe the liquid level in the chamber 12. If there is no water accumulation, grasp the handle 45 and rotate it so that the upper part of the ellipse is aligned with the through hole. The connecting rod 42 is inserted into the tee 13, causing the spring 43 to... The piston 30 is pushed into the upper end of the chamber 12 to pressurize the chamber 12 and maintain this pressure for a period of time. The change in scale 44 is then observed to determine the sealing condition of the float 20. If scale 44 changes slowly or is inserted directly to the bottom, the surface float 20 seal is compromised and maintenance is required. In this case, the flange connection of the chamber 12 can be opened to clean the float 20 and the connection point with the chamber 12. After cleaning, the chamber 12 is reinstalled and tested again. If the test passes, the system can continue to be used. If the test fails, the entire drain pipe 10 needs to be replaced.

[0035] In summary, the float 20 serves as a backflow preventer, thus preventing outside air from entering the room through the drain pipe 10. The piston 30 is pushed into the chamber 12 by the pushing mechanism 40 to check whether the internal pressure of the chamber 12 can be maintained, thereby judging the sealing condition of the float 20. This facilitates daily maintenance and inspection, ensuring indoor air quality.

[0036] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, improvements, or equivalent substitutions made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A condensate drainage water seal device for preventing outside air from entering a cleanroom, characterized in that, The device includes a drain pipe (10), on which a water trap (11), a chamber (12), and a tee (13) are sequentially arranged. The chamber (12) is vertically arranged, and a float (20) is movably arranged inside the chamber (12). The side of the tee (13) is a water outlet. The lower part of the tee (13) is connected to the chamber (12). A piston (30) is movably arranged on the upper part of the tee (13). The piston (30) is slidably connected to the inner wall of the chamber (12). A pushing mechanism (40) is arranged on the back of the piston (30).

2. The condensate drainage water seal device for preventing external air from entering a cleanroom according to claim 1, characterized in that, The bottom of the water trap (11) is provided with a drain outlet (14).

3. A condensate drainage water seal device for preventing external air from entering a cleanroom according to claim 2, characterized in that, The drain pipe (10) is equipped with a clamp (50).

4. A condensate drainage water seal device for preventing external air from entering a cleanroom according to claim 3, characterized in that, The chamber (12) includes upper and lower parts connected by flanges. The middle part of the chamber (12) is spherical, and the float (20) is located in the middle part of the chamber (12).

5. A condensate drainage water seal device for preventing external air from entering a cleanroom according to claim 4, characterized in that, The chamber (12) is provided with a conical mesh (15), which is wedged between the upper and lower parts.

6. A condensate drainage water seal device for preventing outside air from entering a cleanroom according to claim 5, characterized in that, The pushing mechanism (40) includes a maintenance cover (41) and a connecting rod (42). The maintenance cover (41) is threaded to the upper part of the tee (13). The lower end of the connecting rod (42) is fixedly connected to the piston (30). A spring (43) is provided between the piston (30) and the maintenance cover (41).

7. A condensate drainage water seal device for preventing external air from entering a cleanroom according to claim 6, characterized in that, The connecting rod (42) includes two sections, the lower section is a prototype and the upper section is an ellipse. The inspection cover (41) has an elliptical through hole that matches the upper section. The connecting rod (42) is provided with a scale (44).

8. A condensate drainage water seal device for preventing external air from entering a cleanroom according to claim 7, characterized in that, A handle (45) is fixedly connected to the outer end of the connecting rod (42).

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