Automatic backwashing device for water inlet pipeline of precise air conditioner

Abstract

The utility model belongs to the technical field of air conditioner cleaning equipment, and particularly relates to an automatic backwashing device for a precise air conditioner water inlet pipeline, which comprises a tank body, a filter assembly and a deslagging assembly, the filter assembly is arranged in the tank body and used for filtering water flow in the tank body, the filter assembly comprises a filter screen, and the filter screen is hollow to form an interlayer; the residue discharging assembly is located in the filtering assembly and used for assisting in discharging filter residues in the filtering assembly out of the tank body, a filter element is installed in an interlayer of the filter screen, wedge-shaped ring ribs are arranged on the outer ring face of the filter screen and are arranged at equal intervals in the axial direction of the filter screen, the filter element is tightly arranged in the interlayer of the filter screen in a continuous S shape, and the wedge-shaped ring ribs are of a protruding wedge-shaped structure. The end faces of the first inclined planes continue to be away from each other to form second inclined planes. According to the utility model, particles in the fluid can be better separated, and the condition that circulating water flows back into the air conditioner pipeline and the condition that filter residues in the air conditioner pipeline flow back are well avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air conditioner cleaning equipment technical field, specifically related to a kind of automatic backflushing device for precision air conditioner water inlet pipeline. BACKGROUND

[0002] Air conditioner water inlet pipeline is an important component in air conditioning system, mainly responsible for introducing cooling water or chilled water into air conditioning unit to realize refrigeration or heating function, in the design of air conditioner water inlet pipeline, multiple factors need to be considered, including the diameter, length, layout and connection mode of pipeline etc. The diameter of pipeline needs to be determined according to the flow and pressure demand of air conditioning system, to ensure sufficient water flow through the pipeline, meet the cooling or heating demand of air conditioning unit. The length and layout of pipeline need to be reasonably planned according to building structure and space limitation, to reduce water flow resistance and energy loss.

[0003] In addition, air conditioner water inlet pipeline also needs to be equipped with necessary valves and accessories, such as stop valve, check valve, filter etc. These valves and accessories can control the opening and closing, direction and flow of water flow, and protect pipeline and equipment from impurities and dirt, and if impurities and dirt in pipeline are not cleaned for a long time, it will affect the refrigeration or heating effect of air conditioner. Commonly used backflushing device filters the filter residue in pipeline, but some backflushing devices have weak ability to trap impurities in filter material layer, so that the filtering capacity of filter tank cannot be recovered in time, and the recirculated water flow flows back to air conditioner pipeline, causing the backflow of filter residue in air conditioner pipeline. CONTENT OF THE INVENTION

[0004] The utility model aims to provide a kind of automatic backflushing device for precision air conditioner water inlet pipeline, which helps to separate particles in fluid better, and effectively avoids the recirculated water flow flowing back to air conditioner pipeline and the backflow of filter residue in air conditioner pipeline.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] An automatic backflushing device for precision air conditioner water inlet pipeline includes a tank body, a filter assembly and a residue discharge assembly. The filter assembly is arranged inside the tank body to filter water flow in the tank body. The filter assembly includes a filter screen, which is hollow to form a sandwich. The residue discharge assembly is arranged inside the filter assembly to assist the discharge of filter residue in the filter assembly from the tank body.

[0007] In a preferred embodiment, the sandwich of the filter screen is provided with filter cartridges, and the outer ring surface of the filter screen is provided with wedge-shaped ring ribs, which are arranged equidistantly along the axial direction of the filter screen.

[0008] In a preferred embodiment, the filter cartridges are arranged continuously in the sandwich of the filter screen in a "S" shape.

[0009] In a preferred solution, the wedge-shaped ring rib is a protruding wedge-shaped structure, the two sides of which are inclined away from each other to form a first inclined surface, and the end surface of the first inclined surface continues to be away to form a second inclined surface, so that the transverse surface distance of the first inclined surface is smaller than that of the second inclined surface.

[0010] In a preferred solution, the second inclined surface is arranged on the outer ring surface of the filter screen, and the first inclined surface is arranged away from the outer ring surface of the filter screen.

[0011] In a preferred solution, the slag removal assembly comprises a driving shaft, which extends to the inside of the filter screen; and a plurality of connecting rib plates are annularly distributed on the circumferential side of the driving shaft, and the distal ends of the plurality of connecting rib plates are connected to form a scraping blade, which is arranged in the axial direction of the driving shaft.

[0012] In a preferred solution, one side of the tank body is provided with a water inlet, the bottom of the tank body is provided with a water outlet, the inside of the tank body is provided with a slag removal channel, one end of the slag removal channel is connected with the port of the filter screen, the other end extends to the outside through the tank body, and the slag removal channel is further provided with a butterfly valve arranged in the inside of the slag removal assembly, and a driving motor is further arranged, which drives the slag removal assembly to rotate.

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

[0014] In the utility model, the "S"-shaped filter core can effectively intercept suspended particles, impurities, scale and small particles in water through the complex circuit, improve the purity of water flow circulation, and on the other hand, the filter core with the "S"-shaped circuit is easy to adsorb impurities, and because the transverse section is relatively long, more contact area and adsorption opportunities are provided for impurities and particles, so that the impurities and particles in water are not easy to escape to the outside of the filter screen, and the maximization of the filtering effect is ensured.

[0015] In the utility model, when the fluid passes through the wedge-shaped filter element, the flow rate and flow direction of the fluid will change due to the change of the distance between the two wedge-shaped ring ribs. The design of the two inclined surfaces of the wedge-shaped ring rib makes the fluid have a gradually changing flow rate area when passing through the filter element. The change of the flow rate helps to better separate the particles in the fluid, and the situation that the circulating water flow returns to the air conditioner pipeline and the situation that the filter residue returns to the air conditioner pipeline are well avoided. In addition, by increasing the wrinkle structure of the inclined surface of the wedge-shaped ring rib, the filtering area is increased, so that the wedge-shaped ring rib can handle more fluid under the condition of the same volume, and the filtering efficiency and use effect are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall structure schematic view of the utility model;

[0017] Figure 2 is the overall structure schematic view of the utility modelFigure 1 A schematic diagram of a half-section structure;

[0018] Figure 3 This is a practical book Figure 2 A magnified structural diagram showing the details at point A;

[0019] Figure 4 This is a schematic diagram of the slag discharge component in this practical application.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Tank body; 2. Inlet; 3. Outlet; 4. Filter assembly; 401. Filter screen; 402. Filter element; 403. Wedge-shaped ring rib; 404. First inclined surface; 405. Second inclined surface; 5. Slag discharge channel; 6. Butterfly valve; 7. Slag discharge assembly; 701. Drive shaft; 702. Connecting rib; 703. Scraper; 8. Drive motor. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Please refer to Figures 1-2. This utility model provides an automatic backwashing device for a precision air conditioning water inlet pipe, including a tank 1, a filter assembly 4, and a sludge discharge assembly 7. The filter assembly 4 is located inside the tank 1 and is used to filter the water flow in the tank 1. The filter assembly 4 includes a filter screen 401, which is hollow and forms a sandwich. The sludge discharge assembly 7 is located inside the filter assembly 4 and is used to assist the discharge of filter sludge from the filter assembly 4 into the tank 1.

[0027] Please see Figure 1 The tank body 1 has an inlet 2 on one side and an outlet 3 at the bottom. A slag discharge channel 5 is installed inside the tank body 1, with one end connected to the port of the filter screen 401 and the other end extending through the tank body 1 to the outside. It also includes a butterfly valve 6 located inside the slag discharge assembly 7. When the butterfly valve 6 is open, the tank body 1 begins operation; when the butterfly valve 6 is closed, the slag discharge assembly 7 is activated to discharge the filter slag from the filter screen 401. The assembly also includes a drive motor 8, which drives the slag discharge assembly 7 to rotate. The drive motor 8 is fixed to the drive shaft 701, providing power to rotate the drive shaft 701, thus enabling the slag discharge assembly 7 to assist in the slag discharge operation inside the filter screen 401.

[0028] Please see Figures 2-3 The filter screen 401 has a filter element 402 installed in the interlayer. The outer ring surface of the filter screen 401 is provided with wedge-shaped ring ribs 403. The wedge-shaped ring ribs 403 are arranged at equal intervals along the axial direction of the filter screen 401. The filter element 402 is arranged in a continuous "S" shape and is tightly arranged in the interlayer of the filter screen 401.

[0029] Based on the above, the "S"-shaped filter element 402, through its complex circuit, can effectively trap suspended particles, impurities, scale, and tiny particles in the water, thereby improving the purity of the water circulation. On the other hand, the "S"-shaped circuit filter element 402 is easy to adsorb impurities. Due to its relatively long lateral cross-section, it provides more contact area and adsorption opportunities for impurities and particles. Impurities and particles in the water are less likely to escape to the outside of the filter screen 401, ensuring the maximization of the filtration effect.

[0030] Please see Figures 2-3 The wedge-shaped ring rib 403 is a protruding wedge-shaped structure, with its two sides inclined away from each other to form a first inclined surface 404. The end face of the first inclined surface 404 continues to move away to form a second inclined surface 405, so that the horizontal distance of the first inclined surface 404 is smaller than the horizontal distance of the second inclined surface 405. The second inclined surface 405 is provided on the outer ring surface of the filter screen 401, and the first inclined surface 404 is provided away from the outer ring surface of the filter screen 401.

[0031] The special design of the wedge-shaped ring ribs 403 causes the fluid to change its direction and speed as it passes through the inclined surface of the wedge-shaped ring ribs 403. Due to the narrowing gap between the two wedge-shaped ring ribs 403, particles in the water are captured and intercepted by the wedge structure on the filter element by the inertia and gravity of the water flow. This screening can effectively separate solid particles in the fluid, thereby achieving the purpose of filtration.

[0032] Furthermore, as fluid passes through the wedge-shaped filter element, the flow velocity and direction change due to the varying distance between the two wedge-shaped annular ribs 403. The design of the two inclined surfaces of the wedge-shaped annular ribs 403 creates a gradually changing flow velocity region as the fluid passes through the filter element. This velocity variation helps to better separate particles in the fluid, effectively preventing the recirculated water from flowing back into the air conditioning ducts and the backflow of filter residue within the ducts. In addition, by increasing the pleated structure of the inclined surfaces of the wedge-shaped annular ribs 403, the filtration area is increased, allowing the wedge-shaped annular ribs 403 to handle more fluid within the same volume, thus improving filtration efficiency and performance.

[0033] In addition, the inclined surface of the wedge-shaped ring rib 403 can also be cleaned during backwashing. When impurities accumulate to a certain extent inside the filter screen 401, it will cause the inlet and outlet pressure difference to increase to the set value, or the timer to reach the preset time. At this time, the main control will send a signal to drive the backwashing device to clean. During this process, some clean circulating water will be forced to flow from the outside of the filter screen 401 into the inside of the filter element 402, forming a negative pressure zone, so that the impurity particles adsorbed on the inner wall of the filter element 402 will be discharged from the slag discharge channel 5 with the water flow. This self-cleaning function allows the wedge-shaped ring rib 403 to be cleaned without removing the filter screen 401, extending the service life of the wedge-shaped ring rib 403.

[0034] Please see Figure 4 The slag discharge assembly 7 includes a drive shaft 701 that extends into the interior of the filter screen 401; it also includes connecting ribs 702 that are distributed in a ring around the periphery of the drive shaft 701, and the distal ends of multiple connecting ribs 702 are connected to form scrapers 703 that are arranged along the axial direction of the drive shaft 701.

[0035] More specifically, when the pressure difference between the inlet and outlet increases to the set value, the butterfly valve 6 closes, and the drive motor 8 drives the drive shaft 701 to rotate, causing the scraper 703 to rotate along the inner cavity of the filter screen 401, which helps to discharge the filter residue inside the filter screen 401.

[0036] More specifically, the rotational motion of the scraper 703 effectively removes impurities and filter cake adhering to the inner wall of the filter screen 401, preventing these impurities from accumulating inside the filter screen 401 and affecting the smooth flow of water. As the drive shaft 701 continues to rotate, the scraper 703 continuously pushes the filter cake towards the discharge channel 5, ensuring that impurities can be smoothly discharged from the device. This improves the cleaning efficiency of the filter screen 401, reduces the frequency of manual maintenance, and further enhances the practicality and reliability of the automatic backwashing device. Furthermore, the speed and rotation time of the drive motor 8 can be adjusted according to actual needs to adapt to different water qualities and filtration requirements, ensuring that the filter screen 401 always maintains a good working condition.

[0037] The working principle of this utility is as follows: When flushing the air conditioner inlet water pipe, the system pipe flushing mainly uses tap water to clean the welding slag and other debris in the system pipe. First, tap water is added to the system through the water replenishment tank. After the system is full of water, the circulating water pump is started to flush the system. During this process, tank 1 is connected to the water replenishment tank. According to the pipe conditions, the pipe parameters are input, the parameter values ​​of the testing instruments are set in sequence, and the number of water pumps is adjusted according to the system pipe flow rate. The system flushing flow rate is set not to be less than 1m / s. The water pump is started to flush the pipe. The filtered water enters tank 1 for filtration and is then discharged through outlet 3.

[0038] 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 principles 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 art.

Claims

1. An automatic backflushing device for the inlet water pipeline of a precision air conditioner, characterized in that: include Tank body (1); A filter assembly (4) is disposed inside the tank (1) and is used to filter the water flow inside the tank (1). The filter assembly (4) includes a filter screen (401), which is hollow and forms a sandwich. The slag discharge assembly (7) is located inside the filter assembly (4) and is used to assist the slag in the filter assembly (4) in being discharged from the tank (1).

2. The automatic backflushing device for a precision air conditioner inlet water pipeline according to claim 1, characterized in that: The filter screen (401) has a filter element (402) inside its interlayer. The outer ring surface of the filter screen (401) is provided with wedge-shaped ring ribs (403), which are equidistantly arranged along the axial direction of the filter screen (401).

3. An automatic backflushing device for a precision air conditioner inlet water pipeline according to claim 2, characterized in that: The filter element (402) is arranged in a continuous "S" shape within the interlayer of the filter screen (401).

4. An automatic backflushing device for a precision air conditioner inlet water pipeline according to claim 2, characterized in that: The wedge-shaped ring rib (403) is a protruding wedge-shaped structure with its two sides inclined away from each other to form a first inclined surface (404). The end face of the first inclined surface (404) continues to move away to form a second inclined surface (405), so that the horizontal distance of the first inclined surface (404) is smaller than the horizontal distance of the second inclined surface (405).

5. An automatic backflushing device for a precision air conditioner inlet water pipeline according to claim 4, characterized in that: The second inclined surface (405) is disposed on the outer ring surface of the filter screen (401), and the first inclined surface (404) is disposed away from the outer ring surface of the filter screen (401).

6. An automatic backflushing device for a precision air conditioner inlet water pipeline according to claim 1, characterized in that: The slag discharge assembly (7) includes a drive shaft (701) extending into the interior of the filter screen (401); it also includes... A connecting rib (702) is provided, which is distributed in a ring around the drive shaft (701). The distal ends of multiple connecting ribs (702) are connected to form a scraper (703), which is arranged along the axial direction of the drive shaft (701).

7. An automatic backflushing device for a precision air conditioning inlet water pipeline according to any one of claims 1-6, characterized in that: The tank (1) has an inlet (2) on one side and an outlet (3) at the bottom. The tank (1) has a slag discharge channel (5) installed inside. One end of the slag discharge channel (5) is connected to the port of the filter screen (401), and the other end extends through the tank (1) to the outside. It also includes a butterfly valve (6) located inside the slag discharge assembly (7); It also includes a drive motor (8), which drives the slag discharge assembly (7) to rotate.

Images