Anti-clogging heating and drainage structure

By installing water treatment structures, including filter cartridges and cleaning discs, in the HVAC drainage system, the problem of pipe blockage is solved, and the system achieves efficient operation and long-term equipment stability.

CN224302294UActive Publication Date: 2026-05-29BEIJING AOSIDE ARCHITECTURE DESIGN CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING AOSIDE ARCHITECTURE DESIGN CO LTD
Filing Date
2025-07-14
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing HVAC drainage systems, pipes are prone to blockage due to the accumulation of rust and scale, and mechanical parts are easily corroded and damaged, affecting the system's operating efficiency and lifespan.

Method used

A water treatment structure, including a filter cartridge, an electric telescopic rod, and a cleaning disc, is installed at the inlet of the drainage pipe to prevent large particles from entering the pipe by filtering impurities and automatically cleaning them.

Benefits of technology

It effectively removes impurities from water, prevents pipe blockage, improves system stability, reduces maintenance frequency, and extends equipment life.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224302294U_ABST
    Figure CN224302294U_ABST
Patent Text Reader

Abstract

The utility model belongs to the technical field of heating and ventilation drainage, concretely relates to a kind of anti-blocking heating and ventilation drainage structure, including drain pipe, processing cylinder and pipeline, processing cylinder is connected to the top of drain pipe, pipeline is connected to one side of processing cylinder, the inside of processing cylinder is provided with water treatment mechanism;Water treatment mechanism includes filter cylinder, electric telescopic rod, cleaning disc and blowdown valve, filter cylinder is installed in the inside of processing cylinder, filter cylinder is located at the center of processing cylinder and is located at the end of pipeline, electric telescopic rod is set up in the top of processing cylinder, the output end of electric telescopic rod is penetrated to the inside of processing cylinder, cleaning disc is fixedly connected to the output end of electric telescopic rod bottom portion.The utility model provides a kind of anti-blocking heating and ventilation drainage structure, can install water treatment structure at pipeline entrance, to remove mineral matter and impurity in water, ensure water flow, avoid water flow to block drain pipe, ensure the efficient operation of heating and ventilation system.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of HVAC drainage technology, specifically relating to an anti-clogging HVAC drainage structure. Background Technology

[0002] In architecture, HVAC refers to all aspects related to the comfort of the built environment. Specifically, it is divided into heating, ventilation, and air conditioning. Heating involves using artificial methods to provide heat to the interior of a building to maintain a comfortable living or working temperature. This can be achieved through various energy sources (such as natural gas and electricity), usually by producing hot water or steam through boilers or other heat sources, and then transferring the heat to the required areas through a pipe system. However, water contains minerals or corrosive metals. When boilers heat the water, they produce rust or other corrosive products. These impurities enter the HVAC system with the water flow. After long-term operation, the inner walls of the pipes gradually thicken with the deposition of rust, scale, or other corrosive products, which can easily lead to pipe blockage. Especially in heating systems, the accumulation of scale and corrosive substances can cause poor drainage and even backflow of water.

[0003] A search revealed a utility model patent with publication number 202420735611.X, which discloses an anti-clogging building HVAC drainage structure. Existing drainage structures utilize a side-rotating knob to drive a rotating rod, an active bevel gear, and auger blades. The rotation of the auger blades causes impurities to settle and move downwards, facilitating cleaning. However, because the mechanical parts operate in water containing corrosive substances for extended periods, they are susceptible to corrosion and damage, resulting in uneven metal surfaces, increased friction, and consequently, sluggish movement of the rotating components. This not only reduces the efficiency of the mechanical system but also increases the operating load on the equipment, shortens the lifespan of the mechanical parts, and affects drainage efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a clog-proof HVAC drainage structure that can install a water treatment structure at the pipe inlet to remove minerals and impurities from the water, ensure smooth water flow, prevent water from clogging the drain pipe, and ensure the efficient operation of the HVAC system.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A clog-resistant HVAC drainage structure includes a drain pipe, a treatment cylinder, and a pipe. The treatment cylinder is connected to the top of the drain pipe, and the pipe is connected to one side of the treatment cylinder. A water treatment mechanism is installed inside the treatment cylinder. The water treatment mechanism includes a filter cylinder, an electric telescopic rod, a cleaning disc, and a drain valve. The filter cylinder is installed inside the treatment cylinder, located at the center of the treatment cylinder and at the end of the pipe. The electric telescopic rod is located at the top of the treatment cylinder, with its output end extending into the interior of the treatment cylinder. The cleaning disc is fixedly connected to the output end at the bottom of the electric telescopic rod and is located at the top of the inner wall of the treatment cylinder. The drain valve is connected to the top of one side of the treatment cylinder, with its end located at the top of the filter cylinder, and the cleaning disc is higher than the drain valve.

[0007] Preferably, the top of the cleaning tray has several through holes, which are evenly distributed on the top of the cleaning tray.

[0008] Preferably, the side surface of the cleaning disc is provided with a scraper, the scraper is in the shape of a ring and is sleeved on the side surface of the cleaning disc, and the outer diameter of the cleaning disc is adapted to the inner diameter of the filter cartridge.

[0009] Preferably, the top of the processing cylinder is connected to a sealing top cover, and the electric telescopic rod is fixedly connected to the top of the sealing top cover.

[0010] Preferably, a connecting ring is fixedly connected to the inner wall of the processing cylinder, the filter cylinder is located inside the connecting ring, a snap-fit ​​block is connected to the outer extension of the top of the filter cylinder, a snap-fit ​​groove is opened on the top of the connecting ring, and the snap-fit ​​block is used in conjunction with the snap-fit ​​groove.

[0011] Preferably, an observation window is provided on the front side of the processing cylinder, and the observation window is made of transparent acrylic material.

[0012] Preferably, the bottom diameter of the processing cylinder is smaller than the overall diameter of the processing cylinder, and the bottom of the processing cylinder is shaped like a bucket.

[0013] The technical effects achieved by this utility model are as follows:

[0014] In this invention, during drainage, water flows from the drain pipe into the treatment cylinder. Inside the treatment cylinder, impurities are filtered and trapped on the inner wall of the filter cylinder by its mesh. The filtered water then flows through a connecting pipe for drainage. When too many impurities are trapped on the inner wall of the filter cylinder, an electric telescopic rod is activated. The electric telescopic rod pushes a cleaning disc downwards, which moves into the interior of the filter cylinder and scrapes off the trapped impurities. The impurities then flow upwards with the water. Opening the drain valve allows the cleaned impurities to be discharged smoothly from the treatment cylinder. This prevents large particles from entering the drainage system, reducing the risk of blockages in pipes and equipment. This ensures the long-term stable operation of the entire drainage system and avoids frequent maintenance due to blockages caused by impurities. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the processing cylinder of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the filter cartridge and connecting ring of this utility model disassembled;

[0018] Figure 4 This is a three-dimensional schematic diagram of the connection between the electric telescopic pole and the cleaning system of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Drain pipe; 101. Pipe; 2. Treatment cylinder; 201. Filter cylinder; 202. Electric telescopic rod; 203. Cleaning tray; 204. Drain valve; 3. Through hole; 4. Scraper; 5. Sealing top cover; 601. Connecting ring; 602. Snap-fit ​​block; 603. Snap-fit ​​groove; 7. Observation window. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figures 1-4As shown, an anti-clogging HVAC drainage structure includes a drain pipe 1, a treatment cylinder 2, and a pipe 101. The treatment cylinder 2 is connected to the top of the drain pipe 1, and the pipe 101 is connected to one side of the treatment cylinder 2. A water treatment mechanism is installed inside the treatment cylinder 2. The water treatment mechanism includes a filter cylinder 201, an electric telescopic rod 202, a cleaning tray 203, and a drain valve 204. The filter cylinder 201 is installed inside the treatment cylinder 2, located at the center of the treatment cylinder 2 and at the end of the pipe 101. The electric telescopic rod 202 is located at the top of the treatment cylinder 2. The output end of the electric telescopic rod 202 extends into the interior of the treatment cylinder 2. An O-ring is installed at the bottom of the electric telescopic rod 202, fitting over the surface of the output rod and fixedly connected to the top of the treatment cylinder 2. This improves the sealing effect between the electric telescopic rod 202 and the treatment cylinder 2, preventing water leakage and damage. A cleaning disc 203 is fixedly connected to the output end at the bottom of the electric telescopic rod 202, located at the top of the inner wall of the treatment cylinder 2. A drain valve 204 connects to the top of one side of the treatment cylinder 2 for draining wastewater. The end of valve 204 is located at the top of filter cylinder 201, and the cleaning disc 203 is higher than the drain valve 204. After cleaning impurities, the impurities will float to the surface due to the turbulence of the water flow, and the cleaned impurities will be flushed upwards, thus smoothly discharged from the treatment cylinder 2 through the drain valve 204, preventing the heavier impurities from sinking. With the cooperation of the water treatment mechanism, a filter structure can be installed at the end of the drain pipe 1 to filter and intercept large particles of impurities in the water, preventing large particles of impurities from entering the drain pipe 101 and reducing the impact on the drain pipe 1. The system eliminates the risk of blockages. When too many impurities accumulate on the inner wall of the filter cartridge 201, the electric telescopic rod 202 can automatically lower the cleaning disc 203 to scrape away the trapped impurities. This automated cleaning process saves time and costs associated with manual cleaning, reduces the risks of human operation, and improves the automation level of the system. Both the filter cartridge 201 and the cleaning disc 203 are made of stainless steel, which has strong corrosion resistance and can resist liquid erosion. This ensures the long-term stable operation of the components and avoids frequent maintenance and replacement.

[0023] like Figure 4 As shown, the top of the cleaning disc 203 has several through holes 3, which are evenly distributed on the top of the cleaning disc 203. When the electric telescopic rod 202 moves the cleaning disc 203 downward, the water flow can pass through the through holes 3. Under the action of the through holes 3, the resistance on the cleaning disc 203 is reduced. Without the through holes 3, the pressure of the water flow may increase the weight of the cleaning disc 203, thereby increasing the resistance to downward movement. By allowing the water flow through, the through holes 3 reduce the force of the water on the cleaning disc 203, reduce the heaviness of the cleaning disc 203 caused by excessive water pressure, and thus allow the cleaning disc 203 to move downward more easily, improving the cleaning efficiency of the filter cartridge 201.

[0024] like Figure 4 As shown, a scraper 4 is provided on the side surface of the cleaning disc 203. The scraper 4 is in the shape of a ring and is fitted onto the side surface of the cleaning disc 203. The outer diameter of the cleaning disc 203 is adapted to the inner diameter of the filter cartridge 201. The scraper 4 is in close contact with the inner wall of the filter cartridge 201. As the cleaning disc 203 moves up and down, the scraper 4 can directly contact and scrape off the impurities and deposits attached to the inner wall of the filter cartridge 201. This physical scraping method can efficiently clean the inner wall and prevent impurities larger than the mesh of the filter cartridge 201 from accumulating and clogging the mesh of the filter cartridge 201, thereby maintaining the filtration effect of the filter cartridge 201.

[0025] like Figure 2 As shown, a sealing top cover 5 is connected to the top of the treatment cylinder 2. An electric telescopic rod 202 is fixedly connected to the top of the sealing top cover 5. The sealing top cover 5 can ensure the sealing effect of the connection with the treatment cylinder 2, and can also be disassembled and separated from the treatment cylinder 2 by loosening the screws when needed. This provides convenience for cleaning, maintenance and inspection of the inside of the treatment cylinder 2, avoids the need for complicated disassembly for each maintenance, reduces excessive manual intervention and improves maintenance efficiency.

[0026] like Figure 3 As shown, a connecting ring 601 is fixedly connected to the inner wall of the processing cylinder 2. The filter cylinder 201 is located inside the connecting ring 601. A snap-fit ​​block 602 is connected to the outer extension of the top of the filter cylinder 201. A snap-fit ​​groove 603 is opened on the top of the connecting ring 601. The snap-fit ​​block 602 and the snap-fit ​​groove 603 are used together to connect the snap-fit ​​block 602 at the bottom of the outer extension of the filter cylinder 201 with the snap-fit ​​groove 603 at the bottom of the connecting ring 601. When the filter cylinder 201 needs to be maintained or replaced, the filter cylinder 201 can be quickly rotated to make the snap-fit ​​block 602 slide inside the snap-fit ​​groove 603. Then the filter cylinder 201 can be lifted to remove the filter cylinder 201 from the inside of the processing cylinder 2. Thus, it can be easily disassembled or connected without complicated tools or operations, which can greatly shorten the maintenance time and improve work efficiency.

[0027] like Figure 1 As shown, an observation window 7 is provided on the front side of the processing cylinder 2. The observation window 7 is made of transparent acrylic material. The observation window 7 allows the staff to observe the condition of the impurities intercepted on the inner wall of the filter cylinder 201 inside the processing cylinder 2. It allows for timely observation of whether there are impurities accumulating, clogging, or substances that need to be cleaned on the inner wall of the filter cylinder 201. This helps to detect problems in a timely manner and take measures to avoid affecting the operation of the structure.

[0028] like Figure 1 and Figure 2As shown, the bottom diameter of the treatment cylinder 2 is smaller than the diameter of the treatment cylinder 2. The bottom of the treatment cylinder 2 is shaped like a bucket. The shaped bottom of the treatment cylinder 2 can effectively guide the water flow, so that the water can flow effectively into the interior of the filter cylinder 201, and can reduce the eddy or turbulent flow of the water, making the drainage more efficient.

[0029] The working principle of this utility model is as follows: During drainage, water flows from the drain pipe 1 into the treatment cylinder 2. When the water flows into the treatment cylinder 2, it is filtered by the mesh of the filter cylinder 201, which filters and intercepts impurities in the water flow onto the inner wall of the filter cylinder 201. The filtered water then flows through the connected pipe 101 for drainage. When too many impurities are intercepted on the inner wall of the filter cylinder 201, the electric telescopic rod 202 can be activated. The operation of the electric telescopic rod 202 will drive the cleaning disc 203 downward. The cleaning disc 203 moves downward and moves into the interior of the filter cylinder 201, scraping off the impurities intercepted inside the filter cylinder 201. Subsequently, the impurities will flow upward with the water flow. Then, the drain valve 204 can be opened to discharge the cleaned impurities smoothly from the treatment cylinder 2. This can prevent large particles of impurities from entering the drainage treatment system, reduce the risk of blockage of the pipe 101 and equipment, and ensure the long-term stable operation of the entire drainage system, avoiding frequent maintenance caused by impurities clogging.

[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A clog-resistant HVAC drainage structure, characterized in that: It includes a drain pipe (1), a treatment cylinder (2) and a pipe (101). The treatment cylinder (2) is connected to the top of the drain pipe (1), and the pipe (101) is connected to one side of the treatment cylinder (2). A water treatment mechanism is provided inside the treatment cylinder (2). The water treatment mechanism includes a filter cartridge (201), an electric telescopic rod (202), a cleaning disc (203), and a drain valve (204). The filter cartridge (201) is installed inside the treatment cylinder (2). The filter cartridge (201) is located at the center of the treatment cylinder (2) and at the end of the pipe (101). The electric telescopic rod (202) is located at the top of the treatment cylinder (2). The output end of the electric telescopic rod (202) extends into the interior of the treatment cylinder (2). The cleaning disc (203) is fixedly connected to the output end at the bottom of the electric telescopic rod (202). The cleaning disc (203) is located at the top of the inner wall of the treatment cylinder (2). The drain valve (204) is connected to the top of one side of the treatment cylinder (2). The end of the drain valve (204) is located at the top of the filter cartridge (201), and the cleaning disc (203) is higher than the drain valve (204).

2. The anti-clogging HVAC drainage structure according to claim 1, characterized in that: The top of the cleaning tray (203) is provided with through holes (3), and there are several through holes (3) evenly distributed on the top of the cleaning tray (203).

3. The anti-clogging HVAC drainage structure according to claim 1, characterized in that: The cleaning disc (203) has a scraper (4) on its side surface. The scraper (4) is in the shape of a ring and is fitted onto the side surface of the cleaning disc (203). The outer diameter of the cleaning disc (203) is adapted to the inner diameter of the filter cartridge (201).

4. The anti-clogging HVAC drainage structure according to claim 1, characterized in that: The top of the processing cylinder (2) is connected to a sealing top cover (5), and the electric telescopic rod (202) is fixedly connected to the top of the sealing top cover (5).

5. The anti-clogging HVAC drainage structure according to claim 1, characterized in that: The inner wall of the processing cylinder (2) is fixedly connected to a connecting ring (601), the filter cylinder (201) is located inside the connecting ring (601), a snap-fit ​​block (602) is connected to the outer extension of the top of the filter cylinder (201), and a snap-fit ​​groove (603) is opened on the top of the connecting ring (601). The snap-fit ​​block (602) and the snap-fit ​​groove (603) are used together.

6. The anti-clogging HVAC drainage structure according to claim 1, characterized in that: The front side of the processing cylinder (2) is provided with an observation window (7), which is made of transparent acrylic material.

7. The anti-clogging HVAC drainage structure according to claim 1, characterized in that: The bottom diameter of the processing cylinder (2) is smaller than the diameter of the processing cylinder (2), and the bottom of the processing cylinder (2) is shaped like a bucket.