A drain trap device for an industrial air conditioner

Abstract

The utility model belongs to the technical field of drainage of tobacco industry and clean air conditioning system, concretely relates to a kind of for industrial air conditioner drainage sealing device, the device includes fixed frame, water collecting tank, drain pipe and double-sleeve type water seal cup, water collecting tank is located at air conditioning function section bottom, groove bottom is equipped with gradient and forms flow guide passage, drain pipe one end is communicated with water collecting tank lowest point, other end connects the inner sleeve 43 top of double-sleeve type water seal cup, the water seal cup is formed by the inner and outer sleeve 44 of coaxial arrangement, inner sleeve 43 bottom is open and is inserted in the inside of outer sleeve 44, annular water seal cavity is formed between the two, drainage outlet pipe is arranged on the outer sleeve 44 side wall upper end and is communicated with water seal cavity, for leading out condensate water beyond water seal liquid level.The device compact structure, drainage path is short, with good drainage efficiency and sealing performance, while convenient to disassemble and maintain, it is applicable to cigarette workshop and other condensate water discharge amount, high sanitary requirement industrial air conditioning system.

Description

Technical Field

[0001] This utility model belongs to the field of drainage technology in tobacco industry and clean air conditioning systems, and specifically relates to a drainage sealing device for industrial air conditioning. Background Technology

[0002] In the tobacco processing workshops, packaging workshops, and related clean areas of cigarette manufacturing enterprises, large-scale industrial air conditioning systems are commonly installed to meet the high requirements for air temperature, humidity, cleanliness, and air supply stability. Because the air in these workshops often contains smoke, dust, and water vapor, and there are significant temperature differences, the air conditioning systems continuously generate a large amount of condensate during the operation of the cooling and humidification sections. If this condensate cannot be drained in time, it easily accumulates at the bottom of the air conditioner, affecting not only equipment operation but also potentially causing mold, bacteria growth, and other hygiene problems, thus impacting the quality of the supplied air. Therefore, air conditioning systems typically have drain outlets at the bottom of each functional section to promptly remove condensate or cleaning water. Furthermore, to prevent air leakage or backflow caused by positive or negative pressure, each drain outlet is equipped with a water seal structure to ensure the cleanliness and airtight stability of the air conditioning system.

[0003] Existing industrial air conditioning drainage systems commonly employ a combined structure of a "flat condensate tray + U-trap". The condensate tray, installed at the bottom of the functional section, collects condensate, while the drain outlet connects to the U-trap to form a water seal. This structure is essentially a functionally separated and discontinuous drainage method; the functions of water collection, drainage, and water seal are handled separately by the condensate tray, drain pipe, and U-trap, lacking structural coordination and path integration between components. After exiting the condensate tray, the water flows through a horizontal pipe before connecting to the U-trap via a bend to form a water seal. The drainage path contains multiple bends and joints, causing frequent changes in water flow direction. This easily leads to water accumulation and sediment buildup at the joints, affecting drainage efficiency and increasing the risk of leakage and cleaning difficulty. Furthermore, this multi-section structure hinders quick disassembly and centralized maintenance, and long-term operation can create cleaning dead zones, limiting the stability and reliability of the entire drainage system.

[0004] This application is submitted to address the above issues. Utility Model Content

[0005] To address the problems of low drainage efficiency, difficult cleaning and maintenance, and large space occupation of the existing "flat water collection tray + U-shaped water trap" structure, the purpose of this utility model is to provide a water collection and sealing device for industrial air conditioning. This device simplifies the drainage path and improves drainage efficiency and sealing reliability through the integrated design of water collection, drainage and water sealing functions. At the same time, it is easy to disassemble and clean, and is suitable for industrial air conditioning systems with high cleanliness requirements and large condensate discharge, such as tobacco workshops, thereby improving the overall operational stability and hygiene level.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A water collection and sealing device for industrial air conditioning is provided. The device includes: a fixing frame 1, which is installed in the air conditioning functional unit to support maintenance personnel and stabilize the water collection tank.

[0008] The water collection tank 2 is integrated with the fixed frame 1. The bottom of the tank has a certain slope along the water flow direction to promote the flow of condensate towards the drain outlet. The cross-sectional width of the tank gradually narrows from both sides to the middle to form a flow channel to concentrate the water flow.

[0009] Drainage pipe 3 is connected at one end to the lowest point of the slope bottom and the narrowest point of the cross-section of the water collection tank 2, and is used to guide the collected water out.

[0010] The double-sleeve water seal cup 4 includes an inner sleeve 43 and an outer sleeve 44 coaxially disposed therein. The inner sleeve 43 is disposed inside the outer sleeve 44. The top of the inner sleeve 43 is threadedly connected to and communicates with the other end of the drain pipe 3, and the bottom opening communicates with the bottom of the outer sleeve 44. The inner and outer sleeves 44 form an annular water seal cavity. The liquid guided by the drain pipe 3 is injected into the water seal cavity through the inner sleeve 43 and accumulates to form a water seal.

[0011] The drain outlet pipe 6 is located at the upper end of the side wall of the outer sleeve 44 and is connected to the water seal cavity. It is used to drain excess condensate that exceeds the water seal height.

[0012] Preferably, the bottom of the outer sleeve 44 is also provided with a drain hole 5 for draining accumulated liquid. The drain hole 5 is equipped with a controllable opening and closing structure, which can be opened when draining or maintaining, and kept closed at other times.

[0013] Preferably, the bottom side wall of the outer sleeve 44 is provided with a liquid level replenishment channel 41. One end of the liquid level replenishment channel 41 is connected to the water seal cavity, and the other end is connected to an external liquid replenishment source through a connecting pipe 411. A manual valve or a one-way check valve 412 is provided on the connecting pipe 411 to control the liquid replenishment and prevent liquid backflow.

[0014] Preferably, the liquid level replenishment channel 41 is opened on the side wall of the outer sleeve 44 and is located at the lowest liquid level height of the water seal cavity. The end of the connecting pipe 411 that is connected to the external liquid replenishment source is set at a height higher than the lowest liquid level position of the water seal cavity, so as to realize the liquid is injected into the water seal cavity in one direction under the action of gravity and effectively prevent siphon or backflow.

[0015] Preferably, the upper end of the inner sleeve 43 is further provided with an overflow guide groove structure 42. The overflow guide groove 42 is an annular or radial structure with open ends, and is provided on the side wall or top annular surface of the upper end of the inner sleeve 43. Its height corresponds to the position of the drainage outlet pipe 6 provided on the side wall of the outer sleeve 44. The drainage end of the overflow guide groove 42 is connected to the drainage outlet pipe 6, and is used to guide the liquid to flow into the drainage outlet pipe 6 along the overflow guide groove when the liquid level rises rapidly, so as to prevent backflow.

[0016] Preferably, the end of the drain outlet pipe 6 is provided with a one-way check valve to prevent liquid backflow in the drain pipe and ensure the stability of the water seal in the water seal cavity.

[0017] Preferably, the double-sleeve water seal cup 4 is connected to the drain pipe 3 and the drain outlet pipe 6 by a detachable connection structure, including threaded connection or flange sealing connection, which facilitates the disassembly, cleaning or replacement of the water seal cup.

[0018] Preferably, the top of the outer sleeve 44 is a closed structure, with a drainage port connected to the drainage outlet pipe 6 only at the upper end of the side wall, so as to prevent gas from escaping and maintain the airtightness of the water seal cavity.

[0019] The advantages of this utility model over the prior art are as follows:

[0020] 1. This utility model integrates the functions of condensate collection, drainage and water sealing into one unit, replacing the traditional separate structure of "water collection tray + U-shaped water trap", which significantly simplifies the drainage path, reduces the number of connecting parts, and improves the overall compactness and stability of the system.

[0021] 2. The water collection tank of this utility model is designed with a sloping bottom structure and a cross-section with a contraction and flow guiding shape. Combined with the vertical drain pipe and the direct connection water seal cavity structure, it can effectively accelerate the drainage speed and avoid the accumulation of condensate.

[0022] 3. This utility model adopts a double-sleeve water seal cup structure, which forms a closed annular water seal cavity through the inner and outer sleeves 44. The structure is compact and has strong sealing performance. At the same time, it is equipped with a liquid level replenishment channel and an overflow guide channel structure, which can deal with working conditions such as low liquid level and short-term sudden rise, ensuring the water seal is effective for a long time and preventing gas backflow.

[0023] 4. The top of the outer sleeve 44 of this utility model adopts a closed design to prevent gas leakage; the end of the drain outlet pipe is equipped with a one-way check valve to effectively block the backflow of the pipeline and meet the high requirements of industrial air conditioning systems for airtightness and clean air supply.

[0024] 5. All connection parts of this device can be quickly disassembled using threads or flanges, which facilitates periodic cleaning and replacement by maintenance personnel, reduces maintenance intensity, and improves work efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0027] Figure 2 This is a left view of the device of this utility model;

[0028] Figure 3 This is a front view of the device of this utility model;

[0029] Figure 4 This is a schematic diagram of the longitudinal section of a double-sleeve water seal cup;

[0030] Reference numerals in the attached diagram: 1. Fixing frame; 2. Water collection tank; 3. Drain pipe; 4. Double-sleeve water seal cup; 41. Liquid level replenishment channel; 42. Overflow guide channel; 43. Inner sleeve; 44. Outer sleeve; 411. Connecting pipe; 412. Check valve; 5. Sewage discharge hole; 6. Drain outlet pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] See Figure 1-4 As shown, a water collection and sealing device for industrial air conditioning includes: a fixing frame 1, installed inside the air conditioning functional unit, used to support maintenance personnel and stabilize the water collection tank;

[0033] The water collection tank 2 is integrated with the fixed frame 1. The bottom of the tank has a certain slope along the water flow direction to promote the flow of condensate towards the drain outlet. The cross-sectional width of the tank gradually narrows from both sides to the middle to form a flow channel to concentrate the water flow.

[0034] Drainage pipe 3 is connected at one end to the lowest point of the slope bottom and the narrowest point of the cross-section of the water collection tank 2, and is used to guide the collected water out.

[0035] The double-sleeve water seal cup 4 includes an inner sleeve 43 and an outer sleeve 44 coaxially disposed therein. The inner sleeve 43 is disposed inside the outer sleeve 44. The top of the inner sleeve 43 is threadedly connected to and communicates with the other end of the drain pipe 3, and the bottom opening communicates with the bottom of the outer sleeve 44. The inner and outer sleeves 44 form an annular water seal cavity. The liquid guided by the drain pipe 3 is injected into the water seal cavity through the inner sleeve 43 and accumulates to form a water seal.

[0036] The drain outlet pipe 6 is located at the upper end of the side wall of the outer sleeve 44 and is connected to the water seal cavity. It is used to drain excess condensate that exceeds the water seal height.

[0037] Furthermore, the bottom of the outer sleeve 44 is provided with a drain hole 5 for draining accumulated liquid. The drain hole 5 is equipped with a controllable opening and closing structure, which can be opened during drainage or maintenance, and kept closed at other times.

[0038] Furthermore, the bottom side wall of the outer sleeve 44 is provided with a liquid level replenishment channel 41. One end of the liquid level replenishment channel 41 is connected to the water seal cavity, and the other end is connected to an external liquid replenishment source (such as a liquid replenishment tank) through a connecting pipe 411. A manual valve or a one-way check valve 412 is provided on the connecting pipe 411 to control the liquid replenishment and prevent liquid backflow.

[0039] Furthermore, the liquid level replenishment channel 41 is opened on the side wall of the outer sleeve 44 and is positioned at the lowest liquid level height of the water seal cavity. The end of the connecting pipe 411 that is connected to the external liquid replenishment source is positioned at a height higher than the lowest liquid level position of the water seal cavity, so as to realize the unidirectional injection of liquid into the water seal cavity under the action of gravity and effectively prevent siphon or backflow.

[0040] As a preferred embodiment, the connecting pipe 411 is a flexible hose or a metal fitting. When it is a flexible hose, in order to prevent the connecting pipe 411 from sagging due to the softness of the hose material, which would cause poor liquid replenishment, this embodiment can fix the connecting pipe 411 by setting a pipe clamp or bracket and maintaining an appropriate slope to ensure that the liquid flows smoothly under the action of gravity.

[0041] Furthermore, the upper end of the inner sleeve 43 is also provided with an overflow guide groove structure 42. The overflow guide groove 42 is an annular or radial structure with open ends, and is set on the side wall or top annular surface of the upper end of the inner sleeve 43. Its height corresponds to the position of the drainage outlet pipe 6 provided on the side wall of the outer sleeve 44. The drainage end of the overflow guide groove 42 is connected to the drainage outlet pipe 6, which is used to guide the liquid to flow into the drainage outlet pipe 6 along the overflow guide groove when the liquid level rises rapidly, so as to prevent backflow.

[0042] Furthermore, a one-way check valve is provided at the end of the drain outlet pipe 6 to prevent liquid backflow in the drain pipe and ensure the stability of the water seal in the water seal cavity.

[0043] Furthermore, the double-sleeve water seal cup 4 is connected to the drain pipe 3 and the drain outlet pipe 6 by a detachable connection structure, including threaded connection or flange sealing connection, which facilitates the disassembly, cleaning or replacement of the water seal cup.

[0044] Furthermore, the top of the outer sleeve 44 is a closed structure, with a drainage interface connected to the drainage outlet pipe 6 only at the upper end of the side wall, in order to prevent gas from escaping and maintain the airtightness of the water seal cavity.

[0045] Furthermore, to facilitate observation of the water level in the water seal cavity, a transparent observation window may be provided on the side wall of the outer sleeve 44.

[0046] This utility model provides a water collection and sealing device for industrial air conditioning. Through integrated design, the functions of condensate collection, drainage and water sealing are organically integrated into the same structure, which significantly simplifies the drainage path, improves drainage efficiency, and ensures water seal stability and a clean air supply environment.

[0047] During the operation of the air conditioning system, the surface cooler or humidifier continuously produces condensate, which first collects in the water collection tank 2 at the bottom of the functional section. Because the bottom of the water collection tank is sloped along the direction of water flow, and the cross-section of the tank gradually narrows from both sides to the middle, the water flow is concentrated to the lowest point of the tank bottom by gravity and guidance, and then guided out through the drain pipe 3.

[0048] Condensate is introduced into the double-sleeve water seal cup 4 through the drain pipe 3. It first flows into the inner sleeve 43, which is coaxially arranged with the cup, and then enters the outer sleeve 44 surrounding it through the open port at the bottom of the inner sleeve 43, forming an annular water seal cavity between the inner sleeve 43 and the outer sleeve 44. The liquid accumulated in the water seal cavity forms an effective water seal column, typically 30-50 mm in height. This liquid column acts as a seal against the positive pressure from the air conditioning system or the negative pressure from the drainage system, preventing gas from escaping or external odors and bacteria from flowing back into the air conditioning system.

[0049] When the continuously discharged condensate raises the liquid level in the water seal chamber to a certain height, the excess portion will be discharged into the drainage system through the drain outlet pipe 6 located on the upper side wall of the outer sleeve 44. To prevent backflow of liquid in the external pipe, a one-way check valve is installed at the end of the drain outlet pipe 6 to further enhance sealing reliability.

[0050] In practical use, if the water level drops due to insufficient drainage, water shortage, or evaporation of the water seal liquid, external replenishment liquid can be introduced through the liquid level replenishment channel 41 and its connected connecting pipe 411 to maintain a stable liquid level in the water seal chamber. For ease of operation and automatic control, a check valve 412 or a manual valve is installed on the connecting pipe, and the replenishment source is positioned slightly higher than the water seal chamber, thereby achieving unidirectional automatic liquid injection under the action of gravity.

[0051] To avoid the risk of gas backflow caused by a sudden change in the flow rate of condensate, the upper end of the inner sleeve 43 is also provided with an overflow guide groove 42. Once the liquid level exceeds the safe water seal height, the liquid can flow quickly into the drain outlet pipe 6 along the guide groove, which plays a dual role of overflow slow release and drainage.

[0052] When there is liquid accumulation, sedimentation, or maintenance cleaning required in the water seal cavity, the drain hole 5 at the bottom of the outer sleeve 44 can be opened to drain the liquid from the bottom. After cleaning and maintenance, it can be resealed to ensure long-term stable operation.

[0053] In addition, key components of the device, such as the drain pipe, water seal cup, and outlet pipe, are connected by threads or flanges, which facilitates disassembly, cleaning, or replacement and improves maintenance convenience. The outer sleeve 44 can also be equipped with a transparent observation window, which allows maintenance personnel to view the water seal liquid level and operating status in real time, further improving operational reliability and hygiene controllability.

[0054] In summary, this device overcomes the problems of traditional "water collection tray + U-bend" structure separation, maintenance difficulties, and unstable air seal by optimizing structural integration, path simplification, and sealing stability. It is particularly suitable for industrial air conditioning systems in cigarette workshops, clean rooms, or precision industrial environments with high requirements for cleanliness and drainage efficiency.

[0055] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A water collection and drainage sealing device for industrial air conditioning, characterized in that, The device includes: A mounting bracket (1) is installed inside the air conditioning unit to support maintenance personnel and stabilize the water collection tank; The water collection tank (2) is integrated with the fixing frame (1). The bottom of the tank has a certain slope along the direction of water flow discharge, which promotes the condensate to flow to the drain outlet. The cross-sectional width of the tank gradually narrows from both sides to the middle to form a flow channel to concentrate the water flow. The drain pipe (3) is connected at one end to the lowest point of the slope bottom and the narrowest point of the cross-section of the water collection trough (2) to guide the collected water out. A double-sleeve water seal cup (4) includes an inner sleeve (43) and an outer sleeve (44) coaxially disposed therein. The inner sleeve (43) is disposed inside the outer sleeve (44). The top of the inner sleeve (43) is threadedly connected to and communicates with the other end of the drain pipe (3). The bottom opening communicates with the bottom of the outer sleeve (44). The inner and outer sleeves (44) form an annular water seal cavity. The liquid guided by the drain pipe (3) is injected into the water seal cavity through the inner sleeve (43) and accumulates to form a water seal. The drain outlet pipe (6) is located at the upper end of the side wall of the outer sleeve (44) and communicates with the water seal cavity to drain excess condensate that exceeds the water seal height.

2. The water collection and sealing device according to claim 1, characterized in that, The bottom of the outer sleeve (44) is also provided with a drain hole (5) for draining accumulated liquid. The drain hole (5) is equipped with a controllable opening and closing structure, which can be opened when draining or maintaining, and kept closed at other times.

3. The water collection and drainage sealing device according to claim 1, characterized in that, The bottom side wall of the outer sleeve (44) is provided with a liquid level replenishment channel (41). One end of the liquid level replenishment channel (41) is connected to the water seal cavity, and the other end is connected to an external liquid replenishment source through a connecting pipe (411). A manual valve or a one-way check valve (412) is provided on the connecting pipe (411) to control the liquid replenishment and prevent liquid backflow.

4. The water collection and drainage sealing device according to claim 3, characterized in that, The liquid level replenishment channel (41) is opened on the side wall of the outer sleeve (44) and is located at the lowest liquid level height of the water seal cavity. The end of the connecting pipe (411) connected to the external liquid replenishment source is set at a height higher than the lowest liquid level position of the water seal cavity, so as to realize the liquid is injected into the water seal cavity in one direction under the action of gravity and effectively prevent siphon or backflow.

5. The water collection and drainage sealing device according to claim 1, characterized in that, The upper end of the inner sleeve (43) is also provided with an overflow guide groove (42). The overflow guide groove (42) is an annular or radial structure with two open ends. It is set on the side wall or top annular surface of the upper end of the inner sleeve (43). Its height corresponds to the position of the drainage outlet pipe (6) provided on the side wall of the outer sleeve (44). The drainage end of the overflow guide groove (42) is connected to the drainage outlet pipe (6) to guide the liquid into the drainage outlet pipe (6) along the overflow guide groove when the liquid level rises rapidly, so as to prevent backflow.

6. The water collection and drainage sealing device according to claim 1, characterized in that, The end of the drain outlet pipe (6) is equipped with a one-way check valve to prevent liquid backflow in the drain pipe and ensure the stability of the water seal in the water seal cavity.

7. The water collection and sealing device according to any one of claims 1 to 6, characterized in that, The double-sleeve water seal cup (4) is connected to the drain pipe (3) and the drain outlet pipe (6) by a detachable connection structure, including threaded connection and flange sealing connection, which facilitates the disassembly, cleaning or replacement of the water seal cup.

8. The water collection and drainage sealing device according to claim 1, characterized in that, The top of the outer sleeve (44) is a closed structure, with a drainage interface connected to the drainage outlet pipe (6) only at the upper end of the side wall, in order to prevent gas from escaping and maintain the airtightness of the water seal cavity.

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