A pull-type heating and ventilation electric two-way control valve

Abstract

The application relates to the field of valve bodies, and a pull-type heating and ventilation electric two-way control valve comprises a valve body, a valve core assembly and a decorative cover. The valve body is provided with a communication cavity. An inlet liquid passage and an outlet liquid passage are arranged at the valve body side wall in a spaced mode. A valve seat is connected to the cavity wall of the communication cavity. The valve seat is provided with a connecting passage. The connecting passage is communicated with the inlet liquid passage and the outlet liquid passage. The valve core assembly comprises a valve rod and a valve plate. The lower end of the valve rod is slidably embedded in the communication cavity. The sliding direction of the valve rod is parallel to the axis of the connecting passage. The valve plate is connected to the valve rod. The valve plate is used for abutting against the valve seat. The lower end of the decorative cover is coaxially provided with an adjusting groove. The upper end of the valve body is screw-connected in the adjusting groove. The decorative cover abuts against the valve rod. The decorative cover is used for driving the valve rod to slide. The decorative cover is screw-connected with the valve body to adjust the relative position of the decorative cover and the valve body. The decorative cover abuts against the valve rod, drives the valve rod to slide, further drives the valve plate to slide, realizes the closing and opening of the connecting passage, reduces the abrasion between the valve rod and the valve body, and improves the service life of the heating and ventilation control valve.

Description

Technical Field

[0001] This application relates to the technical field of valve bodies, and in particular to a pull-up type electric two-way control valve for heating and ventilation systems. Background Technology

[0002] HVAC control valves, also known as shut-off valves or residential heating valves, facilitate property management and allow residents to independently adjust the temperature and time of their heating systems. They are environmentally friendly and energy-saving products. Each household can control the heating and water supply systems with a set of valves, which cannot be opened without damage, thus achieving effective control. This allows users to freely allocate and control their heating needs, reducing unnecessary waste.

[0003] In traditional HVAC systems, various conventional methods exist for controlling fluid flow. One common approach involves a valve stem threadedly connected to the valve body. Rotating the stem changes the position of the valve core, thus opening and closing the fluid passage. This method relies on the threaded transmission to precisely control the valve core's movement distance, thereby regulating the flow rate. However, when the threads on the valve stem's outer wall are damaged, the valve stem needs to be replaced, a relatively cumbersome operation. Utility Model Content

[0004] To facilitate the replacement and maintenance of HVAC control valves, this application provides a pull-up type electric two-way control valve for HVAC systems.

[0005] The technical solution for a pull-up type electric two-way control valve for HVAC systems provided in this application is as follows: A pull-out type electric two-way control valve for HVAC includes a valve body, a valve core assembly, and a decorative cover. The valve body has a communicating cavity, and an inlet channel and an outlet channel are spaced apart on the side wall of the valve body. The inlet channel and the outlet channel are connected to the communicating cavity. A valve seat is connected to the wall of the communicating cavity, and the valve seat separates the inlet channel and the outlet channel. The valve seat has a connecting channel, the axis of which is parallel to the axis of the communicating cavity, and the connecting channel connects the inlet channel and the outlet channel. The valve core assembly includes a valve stem and a valve plate. The lower end of the valve stem is slidably embedded in the communicating cavity, and the sliding direction of the valve stem is parallel to the axis of the connecting channel. The valve plate is connected to the valve stem and is used to abut against the valve seat to close the connecting channel. The lower end of the decorative cover has an adjusting groove coaxially, and the upper end of the valve body is threaded into the adjusting groove. The decorative cover abuts against the valve stem and is used to drive the valve stem to slide.

[0006] By adopting the above technical solution, the decorative cover is threadedly connected to the valve body to adjust the relative position of the decorative cover and the valve body. The decorative cover abuts against the valve stem, causing the valve stem to slide, which in turn causes the valve plate to slide, thereby realizing the closing and opening of the connection channel, reducing wear between the valve stem and the valve body, and improving the service life of the HVAC control valve.

[0007] Preferably, the valve core assembly further includes a valve disc, which is connected to one end of the valve plate near the valve seat and is used to abut against the valve seat.

[0008] By adopting the above technical solution, the valve disc is connected to the valve plate. The valve disc is usually made of a softer material. When the valve disc is pressed against the valve seat, the valve disc can deform, which helps to better achieve the seal between the valve seat and the valve core assembly, reduce the possibility of leakage between the valve core assembly and the valve seat when the HVAC control valve is closed, and improve the reliability of the HVAC control valve.

[0009] Preferably, the outer periphery of the decorative cover is connected with a plurality of anti-slip patterns, and the plurality of anti-slip patterns are distributed at intervals along the circumferential axis of the decorative cover.

[0010] By adopting the above technical solution, the outer periphery of the decorative cover is connected with anti-slip texture. The anti-slip texture helps to increase the friction between the user's palm and the decorative cover, making it easier for the operator to rotate the decorative cover to open and close the HVAC control valve.

[0011] Preferably, it also includes a valve cover, wherein one end of the communicating cavity near the decorative cover passes through the valve body, the valve cover is connected to the valve body and covers the communicating cavity, the valve cover is provided with a communicating hole, and the end of the valve stem away from the valve seat passes through the communicating hole and extends out of the communicating cavity.

[0012] By adopting the above technical solution, it is easy to open the valve cover to remove the valve stem and valve plate, and replace or repair the valve stem and valve plate, thereby improving the service life of the HVAC control valve.

[0013] Preferably, the valve core assembly further includes a reset member connected between the valve stem and the valve cover, the reset member causing the valve plate to tend to move away from the valve seat.

[0014] By adopting the above technical solution, the reset component ensures that the valve stem always abuts against the decorative cover. When the decorative cover rotates and moves away from the valve seat, the valve stem slides away from the valve seat accordingly, thereby opening the connection channel or increasing the size of the connection channel opening, and improving the reliability of the HVAC control valve.

[0015] Preferably, the bottom of the adjusting groove is provided with a receiving groove, the bottom of the receiving groove is connected to a second convex ring, the end of the valve stem away from the valve seat is connected to a convex post, the end of the convex post away from the valve stem abuts against the bottom of the receiving groove, and the outer wall of the convex post fits against the inner wall of the second convex ring.

[0016] By adopting the above technical solution, the protruding post is embedded in the second protruding ring, thereby achieving relative fixation between the decorative cover and the valve stem in a direction perpendicular to the valve stem axis, reducing the possibility of the valve stem shifting from the decorative cover during sliding, and improving the reliability of the HVAC control valve.

[0017] Preferably, the inner wall of the liquid inlet channel away from the connecting cavity is provided with a first mounting groove, and the wall of the first mounting groove is connected with an internal thread. The inner wall of the liquid outlet channel away from the connecting cavity is provided with a second mounting groove, and the wall of the second mounting groove is connected with an internal thread. The first mounting groove and the second mounting groove are used for connecting to external pipes.

[0018] By adopting the above technical solution, a first mounting groove and a second mounting groove with internal threads are respectively provided on the inner wall of the liquid inlet channel and the liquid outlet channel at the end away from the connecting cavity, so as to facilitate connection with external pipelines and realize the connection between the HVAC control valve and the external pipelines.

[0019] Preferably, the axis of the inlet channel coincides with the axis of the outlet channel, and the cross-section of the outer wall of the valve body along one end of the inlet channel axis is hexagonal.

[0020] By adopting the above technical solution, the valve body can be fixedly connected to the external pipeline by using a wrench against the hexagonal outer wall of the valve body and rotating the external pipeline, thereby improving the convenience of HVAC control valve installation.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The decorative cover is threaded to the valve body to adjust the relative position of the decorative cover and the valve body. The decorative cover abuts against the valve stem, causing the valve stem to slide, which in turn causes the valve plate to slide, thereby achieving the closing and opening of the connection channel, reducing wear between the valve stem and the valve body, and improving the service life of the HVAC control valve. 2. The reset element ensures that the valve stem always abuts against the decorative cover. When the decorative cover rotates away from the valve seat, the valve stem slides away from the valve seat accordingly, thereby opening or increasing the size of the connection channel and improving the reliability of the HVAC control valve. 3. The protruding post is embedded in the second protruding ring, which realizes the relative fixation of the decorative cover and the valve stem in the direction perpendicular to the valve stem axis, reduces the possibility of the valve stem sliding off from the decorative cover, and improves the reliability of the HVAC control valve. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a pull-up type electric two-way control valve for HVAC systems.

[0023] Figure 2 This is a schematic diagram of a pull-up type electric two-way control valve for HVAC systems.

[0024] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0025] Explanation of reference numerals in the attached figures: 1. Valve body; 11. Communicating cavity; 12. Liquid inlet channel; 13. Liquid outlet channel; 14. First mounting slot; 15. Second mounting slot; 16. Valve seat; 161. Connecting channel; 17. Third mounting slot; 2. Valve core assembly; 21. Valve stem; 211. Fixing rod; 2111. Abutment ring; 2112. Protrusion; 2113. Slide groove; 212. Moving rod; 2121. First step groove; 2122. Second step groove; 22. Valve plate; 221. Embedded groove; 23. Valve disc; 24. Washer; 25. Fixing nut; 26. Reset component; 3. Valve cover; 31. Connecting hole; 32. First convex ring; 4. Decorative cover; 41. Anti-slip texture; 42. Receiving groove; 43. Adjustment groove; 44. Second convex ring; 45. Boss; 5. Electrical control components; 51. Electric controller; 52. Drive components. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] Reference Figure 1 This application discloses a pull-up type electric two-way control valve for HVAC systems, including a valve body 1. The upper end of the valve body 1 has a connecting cavity 11. An inlet channel 12 and an outlet channel 13 are spaced apart on the side wall of the valve body 1, both connected to the connecting cavity 11. The axis of the inlet channel 12 coincides with the axis of the outlet channel 13. The connection point between the inlet channel 12 and the connecting cavity 11 is located on the side of the outlet channel 13 away from the opening of the connecting cavity. A first mounting groove 14 is coaxially provided on the inner wall of the end of the inlet channel 12 away from the connecting cavity 11, and the groove wall of the first mounting groove 14 is connected with an internal thread. A second mounting groove 15 is coaxially provided on the inner wall of the end of the outlet channel 13 away from the connecting cavity 11, and the groove wall of the second mounting groove 15 is connected with an internal thread. The first mounting groove 14 and the second mounting groove 15 are used for connecting to external pipes.

[0028] Reference Figure 2 In this embodiment, the cross-section of the outer wall of the valve body 1 near the liquid inlet channel 12 is hexagonal.

[0029] Reference Figure 1 and Figure 3A pull-out type electric two-way control valve for HVAC also includes a valve core assembly 2. A valve seat 16 is fixedly connected to the wall of the connecting cavity. The valve seat 16 separates the inlet channel 12 and the outlet channel 13. The valve seat 16 is provided with a connecting channel 161, which connects the inlet channel 12 and the outlet channel 13. The axis of the connecting channel 161 coincides with the axis of the connecting cavity 11. The valve core assembly 2 includes a valve stem 21, a valve plate 22, a valve disc 23, a washer 24, and a fixing nut 25. The lower end of the valve stem 21 is coaxially slidably embedded in the connecting cavity 11. The outer periphery of the valve stem 21 near the inlet channel 12 is coaxially provided with a first stepped groove 2121. The valve plate 22 is sleeved on the outer periphery of the valve stem 21. The inner wall of the valve plate 22 is in contact with the groove wall of the first stepped groove 2121, and one end of the valve plate 22 is in contact with the bottom of the first stepped groove 2121. The valve plate 22 has a groove 221 on the inner wall near the connecting channel 161. The first stepped groove 2121 has a second stepped groove 2122 on the wall near the end of the liquid inlet channel 12. The valve disc 23 is embedded in the groove 221. The valve disc 23 is annular. The outer wall of the valve disc 23 is in contact with the wall of the groove 221. The inner wall of the valve disc 23 is in contact with the wall of the second stepped groove 2122. One end of the valve disc 23 is in contact with the bottom of the groove 221. The other end of the valve disc 23 extends out of the groove 221 to abut against the surface of the valve seat 16 away from the liquid inlet channel 12. The washer 24 is fitted around the outer periphery of the valve stem 21. The inner wall of the washer 24 fits against the wall of the second step groove 2122. The washer 24 abuts against the end of the valve disc 23 away from the bottom of the groove 221. The fixing nut 25 is threaded to the valve stem 21. The fixing nut 25 is threaded to the wall of the second step groove 2122. The fixing nut 25 abuts against the side surface of the washer 24 away from the valve disc 23.

[0030] Reference Figure 1 A pull-up type electric two-way control valve for HVAC also includes a valve cover 3. A third mounting groove 17 is coaxially provided at the opening of the connecting cavity 11. One end of the valve cover 3 is threaded into the third mounting groove 17. The valve cover 3 has a connecting hole 31 coaxially. The end of the valve stem 21 away from the valve seat 16 passes through the connecting hole 31 and extends out of the valve body 1. An abutment ring 2111 is coaxially fixedly connected to the outer periphery of the side of the valve stem 21 away from the valve seat 16. The valve core assembly 2 also includes a reset member 26, which is connected between the abutment ring 2111 and the valve cover 3. The reset member 26 causes the valve disc 23 to tend to move away from the valve seat 16. In this embodiment, the reset member 26 is a spring. The reset member 26 is sleeved on the outer periphery of the valve stem 21. One end of the reset member 26 is connected to the surface of the abutment ring 2111 near the valve cover 3, and the other end of the reset member 26 is connected to the end of the valve cover 3 away from the valve seat 16. The end of the valve cover 3 away from the valve seat 16 is coaxially fixed to the first convex ring 32, and the inner wall of the first convex ring 32 is in contact with the outer wall of the reset member 26 near the end of the valve cover 3.

[0031] Reference Figure 1 and Figure 2A pull-up type electric two-way control valve for HVAC also includes a decorative cover 4, which is coaxially connected to the upper end of the valve body 1. Several anti-slip patterns 41 are fixedly connected to the outer periphery of the decorative cover 4, and these patterns are evenly distributed circumferentially around the axis of the decorative cover 4. A receiving groove 42 is coaxially provided at the end of the decorative cover 4 closest to the valve body 1. The end of the valve stem 21 away from the valve seat 16 extends into the receiving groove 42. A second convex ring 44 is fixedly connected to the bottom of the receiving groove 42. A protruding post 2112 is coaxially fixedly connected to the end of the valve stem 21 away from the valve seat 16. The end of the protruding post 2112 away from the valve stem 21 abuts against the bottom of the receiving groove 42, and the outer wall of the protruding post 2112 fits against the inner wall of the second convex ring 44. An adjusting groove 43 is provided on the groove wall at the end of the receiving groove 42 away from the bottom. The upper end of the valve body 1 is embedded in the adjusting groove 43, and the wall of the adjusting groove 43 is threadedly connected to the outer wall of the upper end of the valve body 1.

[0032] A pull-up type electric two-way control valve for HVAC also includes an electric control assembly 5, which includes an electric controller 51 and a drive component 52. The valve stem 21 includes a fixed rod 211 and a moving rod 212. The fixed rod 211 has a groove 2113 at one end near the valve seat 16, and the moving rod 212 is coaxially slidably embedded in the groove 2113 at one end away from the valve seat 16. The outer wall of the moving rod 212 is in contact with the groove wall of the groove 2113. The drive component 52 is embedded in the groove 2113 and is used to drive the moving rod 212 to slide. In this embodiment, the drive component 52 is an electric cylinder. The electric controller 51 is connected to the end of the decorative cover 4 away from the valve body 1 and is used to control the operation of the drive component 52. A boss 45 is coaxially fixedly connected to the upper end of the decorative cover 4, and the boss 45 is used to cooperate with the groove at the lower end of the electric controller 51.

[0033] The implementation principle of a pull-up type electric two-way control valve for HVAC according to an embodiment of this application is as follows: When manually driven, by rotating the decorative cover 4, the relative height between the decorative cover 4 and the valve body 1 along the axis of the decorative cover 4 is adjusted. When the decorative cover 4 moves down, the bottom of the receiving groove 42 abuts against the protrusion 2112, pushing the valve rod 21 to move down against the elastic force of the reset member 26, causing the valve disc 23 to move closer to the valve seat 16. When the decorative cover 4 moves up, the bottom of the receiving groove 42 disengages from the protrusion 2112, and the reset member 26 pushes the valve rod 21 up, causing the valve disc 23 to move away from the valve seat 16, so that the protrusion 2112 abuts against the bottom of the receiving groove 42.

[0034] When electrically driven, the electric controller 51 controls the drive component 52 to work based on the flow rate and temperature detected by external sensors, which drives the moving rod 212 to slide, so that the valve disc 23 moves closer to or further away from the valve seat 16.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pull-out type electric two-way control valve for HVAC systems, characterized in that: The device includes a valve body (1), a valve core assembly (2), and a decorative cover (4). The valve body (1) has a communicating cavity (11). The side wall of the valve body (1) is provided with an inlet channel (12) and an outlet channel (13) spaced apart. The inlet channel (12) and the outlet channel (13) are connected to the communicating cavity (11). A valve seat (16) is connected to the wall of the communicating cavity (11). The valve seat (16) separates the inlet channel (12) and the outlet channel (13). The valve seat (16) has a connecting channel (161). The axis of the connecting channel (161) is parallel to the axis of the communicating cavity (11). The connecting channel (161) is connected to the inlet channel (12). The valve core assembly (2) includes a valve stem (21) and a valve plate (22); the lower end of the valve stem (21) is slidably embedded in the connecting cavity (11); the sliding direction of the valve stem (21) is parallel to the axis of the connecting channel (161); the valve plate (22) is connected to the valve stem (21); the valve plate (22) is used to abut against the valve seat (16) to close the connecting channel (161); the lower end of the decorative cover (4) is coaxially provided with an adjustment groove (43); the upper end of the valve body (1) is threadedly connected to the adjustment groove (43); the decorative cover (4) abuts against the valve stem (21); the decorative cover (4) is used to drive the valve stem (21) to slide.

2. The pull-out type electric two-way control valve for HVAC systems according to claim 1, characterized in that: The valve core assembly (2) also includes a valve disc (23); the valve disc (23) is connected to one end of the valve plate (22) near the valve seat (16); the valve disc (23) is used to abut against the valve seat (16).

3. The pull-out type electric two-way control valve for HVAC systems according to claim 1, characterized in that: The decorative cover (4) has several anti-slip patterns (41) connected to its outer periphery; the several anti-slip patterns (41) are distributed circumferentially along the axis of the decorative cover (4).

4. The pull-out type electric two-way control valve for HVAC systems according to claim 1, characterized in that: It also includes a valve cover (3); the end of the connecting cavity (11) near the decorative cover (4) passes through the valve body (1); the valve cover (3) is connected to the valve body (1) and covers the connecting cavity (11); the valve cover (3) is provided with a connecting hole (31); the end of the valve stem (21) away from the valve seat (16) passes through the connecting hole (31) and extends out of the connecting cavity (11).

5. The pull-out type electric two-way control valve for HVAC systems according to claim 4, characterized in that: The valve core assembly (2) also includes a reset member (26); the reset member (26) is connected between the valve stem (21) and the valve cover (3); the reset member (26) causes the valve plate (22) to tend to move away from the valve seat (16).

6. The pull-out type electric two-way control valve for HVAC systems according to claim 5, characterized in that: The bottom of the regulating groove (43) is provided with a receiving groove (42); the bottom of the receiving groove (42) is connected to a second convex ring (44); the end of the valve stem (21) away from the valve seat (16) is connected to a convex post (2112); the end of the convex post (2112) away from the valve stem (21) abuts against the bottom of the receiving groove (42); the outer wall of the convex post (2112) fits against the inner wall of the second convex ring (44).

7. The pull-out type electric two-way control valve for HVAC systems according to claim 1, characterized in that: The inlet channel (12) has a first mounting groove (14) on the inner wall at the end away from the connecting cavity (11); the wall of the first mounting groove (14) is connected with an internal thread; the outlet channel (13) has a second mounting groove (15) on the inner wall at the end away from the connecting cavity (11); the wall of the second mounting groove (15) is connected with an internal thread; the first mounting groove (14) and the second mounting groove (15) are used for connecting to external pipes.

8. The pull-out type electric two-way control valve for HVAC systems according to claim 7, characterized in that: The axis of the inlet channel (12) coincides with the axis of the outlet channel (13); the cross section of the outer wall of the valve body (1) along one end of the axis of the inlet channel (12) is hexagonal.

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