A heating filter type tee valve

Abstract

The application is suitable for the field of heating and ventilation valve technology, and provides a filter type three-way valve for heating and ventilation, which comprises a three-way valve and a filter mechanism arranged at the water inlet end of the three-way valve. The filter mechanism comprises a filter cylinder and a water collecting cover one arranged at the top of the filter cylinder. The water collecting cover one is communicated with the three-way valve through a water outlet pipe. The top of the filter cylinder is further provided with a water outlet hole one communicated with the water collecting cover one. A filter unit is arranged in the filter cylinder. A water inlet unit for guiding water to the filter unit is arranged in the filter cylinder. The filter unit comprises a rotating support unit and a filter unit arranged on the rotating support unit. The filter unit is provided with multiple groups. A cleaning unit is further arranged below the filter unit. Through the arrangement of the filter mechanism, the problem that most of the existing filter type three-way valves have simple structure, poor filtering effect, and the filtering structure is easily blocked after long-term use, thereby affecting the normal operation of the heating and ventilation system is avoided.

Description

Technical Field

[0001] This invention relates to the field of HVAC valve technology, specifically a HVAC filter-type three-way valve. Background Technology

[0002] As a core infrastructure ensuring indoor thermal comfort and improving air quality, HVAC systems are widely used in various scenarios such as residential buildings, commercial complexes, industrial plants, and public buildings. Their operational stability directly affects user experience and energy efficiency. In the fluid transport loop of an HVAC system, valves and filters are two key components: valves perform core functions such as switching media flow direction, regulating flow, and shutting down the system, while filters are responsible for intercepting impurities mixed in the fluid (such as welding slag and rust left from pipeline construction, scale and microbial flocs precipitated during water circulation, and externally introduced sediment particles), preventing impurities from clogging precision equipment such as heat exchangers, radiators, and pumps, extending system lifespan, and ensuring heat exchange efficiency.

[0003] Most existing filter-type three-way valves have simple structures and poor filtration effects. Especially after long-term use, their filter structures are prone to clogging, affecting the normal operation of HVAC systems. Therefore, there is an urgent need to provide a HVAC filter-type three-way valve to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide a general-purpose filter-type three-way valve for heating, which aims to solve the problems mentioned in the background art.

[0005] This invention is implemented as follows: a heating and ventilation system filter-type three-way valve includes a three-way valve and a filter mechanism disposed at the inlet end of the three-way valve. The filter mechanism includes a filter cylinder and a water collection cover disposed at the top of the filter cylinder. The water collection cover is connected to the three-way valve through a water outlet pipe. The top of the filter cylinder is also provided with a water outlet hole connected to the water collection cover. A filter unit is also disposed inside the filter cylinder, and a water inlet unit is disposed inside the filter cylinder for guiding the incoming water to the filter unit. The filter unit includes a rotating support unit and filter units disposed on the rotating support unit. Multiple sets of filter units are provided. A cleaning unit is also disposed below the filter unit. The rotating support unit, in conjunction with the cleaning unit, adjusts the working position of the filter unit to achieve cleaning of the filter unit after operation.

[0006] As a further aspect of the present invention: the rotating support unit includes: The support plate and tray are located inside the filter cartridge, and both the support plate and tray are provided with round holes for installing the filter unit; And a motor fixed to the top of the filter cartridge, the output end of which is fixedly connected to the support plate.

[0007] As a further aspect of the present invention: the filtering unit includes: A guide pipe is fixed between the support plate and the support plate. A water collection cover 2 for communicating with the water outlet 1 is also fixedly installed on the support plate. A water outlet 2 for communicating with the water collection cover 2 and the guide pipe is provided on the support plate. And a filter assembly, which is disposed inside the flow guide tube.

[0008] As a further aspect of the present invention: the filtering component includes: The support cylinder is located inside the guide tube. There are two sets of the support cylinder, and the two sets of support cylinder are fixedly connected by a support rod. One set of support cylinder is fixed to the bottom of the support plate. A filter tube is disposed between two sets of support cylinders; And a sealing assembly for sealing the gap between the support cylinder and the bottom of the guide tube.

[0009] As a further aspect of the present invention: the sealing assembly includes: A support seat is fixedly installed on the inner wall of the guide pipe. Multiple sets of the support seats are provided, and a guide rod is slidably installed on each set of support seats. An end plate is provided at the end of the guide rod near the support seat. A sealing ring is slidably mounted on the support cylinder, and the sealing ring is fixedly mounted on one end of the guide rod away from the support seat; And a spring for elastically pressing the sealing ring, the spring being mounted on a guide rod.

[0010] As a further aspect of the present invention, the sealing ring has an inclined surface on the side facing the support cylinder.

[0011] As a further aspect of the present invention: the end of the filter tube near the second water collection cover is a closed structure, and the end of the filter tube away from the second water collection cover is an open structure, and is connected to the round hole on the tray.

[0012] As a further aspect of the present invention: the cleaning unit is provided in multiple sets, and the cleaning unit includes: An installation plate is installed inside the filter cartridge, and a telescopic cylinder is fixedly installed on the installation plate; A cleaning and scraping block, which is fixedly installed on the telescopic end of the telescopic cylinder; And a linkage rod fixedly installed on the cleaning block, wherein the end of the linkage rod away from the cleaning block has a U-shaped structure for pushing the sealing ring to move.

[0013] As a further aspect of the present invention: the bottom of the filter cylinder is also provided with a drain port, and the mounting plate is provided with a through hole corresponding to the drain port.

[0014] As a further aspect of the present invention: the water inlet unit includes: A flow guide box is fixedly installed inside the filter cartridge. The flow guide box is located below the filter unit and has a cavity inside. An inlet pipe that communicates with the cavity inside the flow guide box is fixedly installed on the filter cartridge. A second spring is slidably installed inside a flow guide box, and a baffle for elastically pressing the second spring is also provided inside the flow guide box; The connecting pipe is used to connect with the support cylinder. The spring 2 has a round hole for fixing and installing in the connecting pipe, and the flow guide box has a round through hole for the connecting pipe to pass through. A limiting plate is fixedly installed inside the connecting pipe, and a guide rod is slidably installed on the limiting plate; A lifting plate is slidably installed inside the connecting pipe. The lifting plate is fixedly installed at one end of the guide rod two, and a base plate is fixedly installed at the other end of the guide rod two. The outer diameter of the base plate is smaller than the inner diameter of the connecting pipe. And a third spring for elastically pressing the base plate, the third spring being sleeved on the second guide rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The rotating support unit drives multiple filter units to work in rotation. While two filter units are performing normal filtration, the cleaning unit can be used to clean the used filter units online. Impurities in the filter components can be removed without stopping the machine, effectively avoiding the problem of HVAC system operation being obstructed due to filter structure blockage in traditional filter-type three-way valves, and ensuring continuous and stable system operation.

[0016] The cleaning unit efficiently scrapes off impurities adhering to the inner wall of the filter tube by the reciprocating motion of the scraping block inside the filter tube. At the same time, the linkage rod pushes the sealing ring out of the sealing position, allowing the impurities accumulated between the filter tube and the guide tube to be discharged smoothly, thoroughly removing contaminants from the filter components and preventing impurities from affecting the filtration effect. Moreover, the filter unit remains clean during rotation, which greatly reduces the wear and tear of the filter components and significantly extends the overall service life of the filtration mechanism.

[0017] In the filtration unit, the sealing component uses the elastic force of spring one to push the sealing ring tightly against the support cylinder, achieving a reliable seal between the support cylinder and the guide pipe. This prevents unfiltered water from flowing directly into the outlet pipe, ensuring thorough filtration. The inlet unit, through the elastic cooperation of springs two and three, achieves precise docking and sealing between the connecting pipe and the support cylinder under water pressure, ensuring that all incoming water can be introduced into the filter pipe for filtration, thus improving filtration efficiency.

[0018] The overall structure is highly integrated. The filtration mechanism and the three-way valve are directly connected through the outlet pipe, making installation convenient. The rotating support unit can switch the working position of the filtration unit by being driven by a motor. The cleaning unit can complete the scraping and discharge of impurities by being driven by a telescopic cylinder. The water inlet unit can be connected and disconnected by adjusting the flow control valve. The whole operation process is highly automated, requiring no complicated manual intervention, and is convenient and flexible to use.

[0019] With the rotating design of multiple filter units, the filtration rhythm can be flexibly adjusted according to the water flow and impurity content of the HVAC system to adapt to the filtration needs under different working conditions; the setting of the drain outlet facilitates centralized collection and discharge of impurities, making maintenance convenient; the inlet pipe can be equipped with a flow control valve, which can switch and adjust the water flow according to the working conditions of filtration and cleaning, further improving the adaptability and practicality of the valve in the HVAC system. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the filtration mechanism in this invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the filtration mechanism in this invention.

[0024] Figure 4 for Figure 3 A schematic diagram of the structure viewed from below.

[0025] Figure 5 This is a partial cross-sectional view of the filtering unit in this invention.

[0026] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0027] Figure 7 This is a schematic diagram of the cleaning unit in this invention.

[0028] Figure 8 This is a schematic diagram of the water inlet unit in this invention.

[0029] Figure 9 This is a schematic diagram of the internal structure of the water inlet unit in this invention.

[0030] Figure 10 for Figure 9 Sectional view at point B.

[0031] In the attached diagram: 1-Three-way valve, 2-Outlet pipe, 3-Drain outlet, 4-Filter cylinder, 5-Inlet pipe, 6-Water collection hood one, 7-Water collection hood two, 8-Support plate, 9-Guide pipe, 10-Panel, 11-Scraper block, 12-Guide box, 13-Telescopic cylinder, 14-Mounting plate, 15-Linkage rod, 16-Outlet hole one, 17-Outlet hole two, 18-Support cylinder, 19-Support rod, 20-Filter pipe, 21-Sealing ring, 22-Guide rod one, 23-Spring one, 24-Support seat, 25-Connecting pipe, 26-Baffle, 27-Lifting plate, 28-Spring two, 29-Limiting plate, 30-Guide rod two, 31-Spring three, 32-Base plate, 33-Motor. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] The present invention will be further explained below with reference to specific embodiments.

[0036] Please see Figures 1-10 The present invention provides a general-purpose filter-type three-way valve for heating, comprising: Three-way valve 1 and a filter mechanism installed at the inlet end of three-way valve 1; The filtration mechanism includes a filter cylinder 4 and a water collection cover 6 disposed on the top of the filter cylinder 4. The water collection cover 6 is connected to the three-way valve 1 through a water outlet pipe 2. The top of the filter cylinder 4 is also provided with a water outlet hole 16 connected to the water collection cover 6. The filter cylinder 4 is also provided with a filtration unit and a water inlet unit for guiding the incoming water to the filtration unit. The filtration unit includes a rotating support unit and a filtration unit disposed on the rotating support unit. Multiple sets of filtration units are provided. A cleaning unit is also provided below the filtration unit. The rotating support unit, in conjunction with the cleaning unit, adjusts the working position of the filtration unit to achieve cleaning of the filtration unit after operation.

[0037] In an embodiment of the present invention, the water inlet unit can guide water from the HVAC system into the filter unit. After being treated by the filter unit, the water enters the water collection hood 6 through the outlet hole 16 and then enters the three-way valve 1 through the outlet pipe 2. After the filter unit has been working for a certain period of time, the rotating support unit will drive the filter unit to rotate and adjust its position, thereby replacing the used filter unit with the unused one. At this time, the cleaning unit can be used to clean the used filter unit, effectively improving the overall service life of the filter mechanism and improving the filtration quality. Compared with the prior art, the present invention avoids the problem that most existing filter-type three-way valves have simple structures and poor filtration effects, especially after long-term use, their filter structure is easily blocked, affecting the normal operation of the HVAC system.

[0038] In one embodiment of the present invention, please refer to Figures 1-10 The rotating support unit includes: The support plate 8 and the tray 10 are located inside the filter cylinder 4, and both the support plate 8 and the tray 10 are provided with round holes for installing the filter unit. And a motor 33 fixed to the top of the filter cartridge 4, the output end of which is fixedly connected to the support plate 8; The filtering unit includes: A guide pipe 9 is fixed between the support plate 8 and the support plate 10. A water collection cover 7 for communicating with the water outlet 16 is also fixedly installed on the support plate 8. A water outlet 17 for communicating with the water collection cover 7 and the guide pipe 9 is provided on the support plate 8. and a filter assembly disposed within the flow guide pipe 9; The filtering component includes: The support cylinder 18 is located inside the guide pipe 9. Two sets of support cylinders 18 are provided, and the two sets of support cylinders 18 are fixedly connected by support rods 19. One set of support cylinders 18 is fixed to the bottom of the support plate 8. Filter tube 20, wherein the filter tube 20 is disposed between two sets of support cylinders 18; And a sealing assembly for sealing the gap between the support cylinder 18 and the bottom of the guide tube 9; The blocking assembly includes: A support seat 24 is fixedly installed on the inner wall of the guide pipe 9. Multiple sets of the support seat 24 are provided, and a guide rod 22 is slidably installed on each set of support seat 24. An end plate is provided at one end of the guide rod 22 near the support seat 24. A sealing ring 21 is slidably installed on the support cylinder 18, and the sealing ring 21 is fixedly installed on the end of the guide rod 22 away from the support seat 24; And a spring 23 for elastically pressing the sealing ring 21, the spring 23 being sleeved on the guide rod 22; wherein, the two ends of the spring 23 are respectively fixedly connected to the support base 24 and the sealing ring 21; The sealing ring 21 has an inclined surface on the side facing the support cylinder 18; The end of the filter tube 20 near the water collection cover 2 7 is a closed structure, and the end of the filter tube 20 away from the water collection cover 2 7 is an open structure, and is connected to the round hole on the tray 10. The cleaning unit is provided in multiple sets, and the cleaning unit includes: A mounting plate 14 is disposed inside the filter cartridge 4, and a telescopic cylinder 13 is fixedly mounted on the mounting plate 14. Scraping block 11, which is fixedly installed on the telescopic end of telescopic cylinder 13; And a linkage rod 15 fixedly installed on the cleaning block 11, wherein the end of the linkage rod 15 away from the cleaning block 11 has a U-shaped structure for pushing the sealing ring 21 to move; The bottom of the filter cylinder 4 is also provided with a drain port 3, and the mounting plate 14 is provided with a through hole corresponding to the drain port 3.

[0039] In this embodiment, two sets of water outlet holes 16 are symmetrically arranged, and four sets of guide pipes 9 are provided. During operation, the motor 33 drives the support plate 8 to rotate, thereby adjusting the working position of the guide pipes 9. Each time, the water collection covers 7 on two sets of guide pipes 9 are connected to the water outlet holes 16. At this time, the filter assembly is connected to the water inlet unit. After the water enters the filter pipe 20, the impurities in it will be filtered by the filter pipe 20 (at this time, the sealing ring 21 seals the gap between the support cylinder 18 and the guide pipe 9). The filtered water enters between the filter pipe 20 and the guide pipe 9, and enters the water collection cover 7 through the water outlet holes 17. Finally, it enters the water collection cover 6 through the water outlet holes 16, thus realizing the filtration function. The rotating support unit can rotate the used filter assembly to the top of the cleaning unit. The telescopic cylinder 13 can scrape off the impurities on the filter tube 20 by driving the scraping block 11 to reciprocate inside the filter tube 20. After scraping for a certain period of time, the telescopic cylinder 13 will drive the scraping block 11 to the top. At this time, the linkage rod 15 will drive the sealing ring 21 to press the spring 23, so that the sealing ring 21 will disengage in the gap between the support cylinder 18 and the guide tube 9, thereby discharging the impurities between the filter tube 20 and the guide tube 9. Finally, the telescopic cylinder 13 will drive the scraping block 11 to reset, so that the scraped impurities are discharged into the filter cylinder 4 and finally discharged from the drain port 3; wherein the drain port 3 can be equipped with a sealing cover.

[0040] In one embodiment of the present invention, please refer to Figures 1-10 The water inlet unit includes: A flow guide box 12 is fixedly installed inside the filter cylinder 4. The flow guide box 12 is located below the filter unit and has a cavity inside. A water inlet pipe 5 that communicates with the cavity inside the flow guide box 12 is fixedly installed on the filter cylinder 4. A second spring 28 is slidably installed inside the flow guide box 12. The flow guide box 12 is also provided with a baffle 26 for elastically pressing the second spring 28. The two ends of the baffle 26 are respectively fixedly connected to the second spring 28 and the inner wall of the flow guide box 12. The connecting pipe 25 is used to connect with the support cylinder 18. The spring 28 has a round hole for fixing and installing on the connecting pipe 25, and the flow guide box 12 has a round through hole for the connecting pipe 25 to pass through. A limiting plate 29 is fixedly installed inside the connecting pipe 25, and a guide rod 30 is slidably installed on the limiting plate 29; A lifting plate 27 is slidably installed inside the connecting pipe 25. The lifting plate 27 is fixedly installed at one end of the guide rod 30, and a base plate 32 is fixedly installed at the other end of the guide rod 30. The outer diameter of the base plate 32 is smaller than the inner diameter of the connecting pipe 25. And a spring 31 for elastically pressing the base plate 32, the spring 31 being sleeved on the guide rod 30; wherein the two ends of the spring 31 are fixedly connected to the limiting plate 29 and the base plate 32 respectively.

[0041] In this embodiment, the inlet pipe 5 can be equipped with a flow control valve. When the guide pipe 9 moves to the top of the connecting pipe 25, the flow control valve adjusts the flow rate to the maximum. At this time, under the action of water pressure, the second spring 28 is pushed upward, so that the second spring 28 drives the connecting pipe 25 to press into the support cylinder 18, realizing the connection with the support cylinder 18. When the second spring 28 can no longer move upward, under the action of water pressure, the lifting plate 27 will be pushed upward, so that the lifting plate 27 is separated from the connecting pipe 25, and the water will enter the filter pipe 20 for filtration. When it is necessary to adjust the working position of the guide pipe 9, the flow rate is reduced by using the flow control valve. At this time, the third spring 31 will push the bottom plate 32 to reset, and the baffle 26 will push the second spring 28 to reset, so that the support plate 10 can rotate above the guide box 12, which is convenient for cleaning the filter pipe 20.

[0042] In summary, the working principle of this invention is as follows: the water inlet unit guides water from the HVAC system into the filter unit. After being treated by the filter unit, the water enters the water collection hood 6 through the outlet hole 16 and then enters the three-way valve 1 through the outlet pipe 2. After the filter unit has been working for a certain period, the rotating support unit drives the filter unit to rotate, adjusting its position and replacing the used filter unit with the unused one. At this point, the cleaning unit can clean the used filter unit, effectively improving the overall service life of the filter mechanism and enhancing filtration quality. The specific working steps of the filter mechanism are as follows: Motor 33 adjusts the working position of guide pipe 9 by rotating support plate 8. Each time, the water collection covers 2 7 on both sets of guide pipe 9 are connected to the water outlet 16. At this time, the filter assembly is connected to the water inlet unit. After water enters the filter pipe 20, the impurities in it will be filtered by the filter pipe 20 (at this time, the sealing ring 21 seals the gap between support cylinder 18 and guide pipe 9). The filtered water enters between filter pipe 20 and guide pipe 9, and enters the water collection cover 2 7 through water outlet 2 17. Finally, it enters the water collection cover 6 through water outlet 16, realizing the filtration function. The rotating support unit can rotate the used filter assembly to the top of the cleaning unit. Telescopic cylinder 13 drives the scraper. The reciprocating motion of the cleaning block 11 within the filter tube 20 scrapes off impurities. After a certain period of cleaning, the telescopic cylinder 13 moves the cleaning block 11 to the top. At this point, the linkage rod 15 presses the sealing ring 21 against the spring 23, causing the sealing ring 21 to disengage from the gap between the support cylinder 18 and the guide tube 9. This allows impurities between the filter tube 20 and the guide tube 9 to be discharged. Finally, the telescopic cylinder 13 resets the cleaning block 11, allowing the scraped impurities to be discharged into the filter cylinder 4 and eventually out through the drain port 3. When the linkage rod 15 separates from the sealing ring 21, the spring 23 pushes the sealing ring 21 back to its original position, sealing the support cylinder 18 and the guide tube 9 for easy filtration. When the guide pipe 9 moves directly above the connecting pipe 25, the flow control valve adjusts the flow rate to the maximum. At this time, under the action of water pressure, the second spring 28 is pushed upward, causing the second spring 28 to press the connecting pipe 25 into the support cylinder 18, thus achieving communication with the support cylinder 18. When the second spring 28 can no longer move upward, under the action of water pressure, the lifting plate 27 will be pushed upward, causing the lifting plate 27 to separate from the connecting pipe 25. The water will then enter the filter pipe 20 for filtration. When it is necessary to adjust the working position of the guide pipe 9, the flow control valve is used to reduce the water flow rate. At this time, the third spring 31 will push the bottom plate 32 to reset, and the baffle 26 will push the second spring 28 to reset, allowing the support plate 10 to rotate above the guide box 12.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A general-purpose filter-type three-way valve for heating, comprising a three-way valve (1) and a filter mechanism disposed at the inlet end of the three-way valve (1), characterized in that, The filtration mechanism includes a filter cylinder (4) and a water collection cover (6) set on the top of the filter cylinder (4). The water collection cover (6) is connected to the three-way valve (1) through a water outlet pipe (2). The top of the filter cylinder (4) is also provided with a water outlet hole (16) connected to the water collection cover (6). The filter cylinder (4) is also provided with a filtration unit and a water inlet unit for guiding the water inlet to the filtration unit. The filtration unit includes a rotating support unit and a filtration unit set on the rotating support unit. Multiple sets of filtration units are provided. A cleaning unit is also provided below the filtration unit. The rotating support unit adjusts the working position of the filtration unit in conjunction with the cleaning unit to achieve cleaning of the filtration unit after it has worked.

2. The HVAC-compatible filter-type three-way valve according to claim 1, characterized in that, The rotary support unit includes: The support plate (8) and the tray (10) are located inside the filter cylinder (4), and both the support plate (8) and the tray (10) are provided with round holes for installing the filter unit; And a motor (33) fixed inside the top of the filter cartridge (4), the output end of which is fixedly connected to the support plate (8).

3. The HVAC-compatible filter-type three-way valve according to claim 2, characterized in that, The filtering unit includes: A guide pipe (9) is fixed between the support plate (8) and the support plate (10). A water collection cover (7) for communicating with the water outlet (16) is also fixedly installed on the support plate (8). A water outlet (17) for communicating with the water collection cover (7) and the guide pipe (9) is provided on the support plate (8). and a filter assembly disposed within the flow guide tube (9).

4. The universal filter-type three-way valve for heating according to claim 3, characterized in that, The filtering component includes: The support cylinder (18) is located inside the guide pipe (9). There are two sets of the support cylinder (18), and the two sets of support cylinders (18) are fixedly connected by the support rod (19). One set of support cylinders (18) is fixed to the bottom of the support plate (8). A filter tube (20) is disposed between two sets of support cylinders (18); And a sealing assembly for sealing the gap between the support tube (18) and the bottom of the guide tube (9).

5. The HVAC-compatible filter-type three-way valve according to claim 4, characterized in that, The blocking assembly includes: A support seat (24) is fixedly installed on the inner wall of the guide pipe (9). The support seat (24) is provided in multiple sets, and a guide rod (22) is slidably installed on each set of support seats (24). An end plate is provided at one end of the guide rod (22) near the support seat (24). A sealing ring (21) is slidably installed on the support cylinder (18), and the sealing ring (21) is fixedly installed at the end of the guide rod (22) away from the support seat (24); And a spring (23) for elastically pressing the sealing ring (21), the spring (23) being sleeved on the guide rod (22).

6. The HVAC-compatible filter-type three-way valve according to claim 5, characterized in that, The sealing ring (21) has an inclined surface on the side facing the support cylinder (18).

7. The universal filter-type three-way valve for heating according to claim 4, characterized in that, The filter tube (20) has a closed structure at the end near the water collection cover (7) and an open structure at the end away from the water collection cover (7), and is connected to the round hole on the tray (10).

8. The HVAC-compatible filter-type three-way valve according to claim 5, characterized in that, The cleaning unit is provided in multiple sets, and the cleaning unit includes: An installation plate (14) is provided inside the filter cartridge (4), and a telescopic cylinder (13) is fixedly installed on the installation plate (14). Scraping block (11), the scraping block (11) is fixedly installed on the telescopic end of the telescopic cylinder (13); And a linkage rod (15) fixedly installed on the cleaning block (11), the end of the linkage rod (15) away from the cleaning block (11) having a U-shaped structure for pushing the sealing ring (21) to move.

9. The HVAC universal filter-type three-way valve according to claim 8, characterized in that, The filter cylinder (4) is also provided with a drain port (3) at the bottom, and the mounting plate (14) is provided with a through hole corresponding to the drain port (3).

10. The universal filter-type three-way valve for heating according to claim 5, characterized in that, The water inlet unit includes: A flow guide box (12) is fixedly installed inside the filter cylinder (4). The flow guide box (12) is located below the filter unit and has a cavity inside. An inlet pipe (5) is fixedly installed on the filter cylinder (4) and communicates with the cavity inside the flow guide box (12). Spring 2 (28) is slidably installed in the flow guide box (12), and the flow guide box (12) is also provided with a baffle (26) for elastically pressing spring 2 (28). The connecting pipe (25) is used to connect with the support cylinder (18). The spring (28) has a round hole for fixing and installing on the connecting pipe (25), and the guide box (12) has a round through hole for the connecting pipe (25) to pass through. A limiting plate (29) is fixedly installed inside the connecting pipe (25), and a guide rod (30) is slidably installed on the limiting plate (29). A lifting plate (27) is slidably installed inside the connecting pipe (25). The lifting plate (27) is fixedly installed at one end of the guide rod (30). The other end of the guide rod (30) is fixedly installed with a base plate (32), and the outer diameter of the base plate (32) is smaller than the inner diameter of the connecting pipe (25). And a spring three (31) for elastically pressing the base plate (32), the spring three (31) being sleeved on the guide rod two (30).

Images