Risk control valve

Abstract

The application discloses a wind control valve, which comprises a valve seat, a fixed shaft and an annular shell arranged coaxially, and a ventilation channel is formed between the annular shell and the fixed shaft; a valve piece assembly is arranged in the ventilation channel and used for opening or closing the ventilation channel; the valve piece assembly comprises a plurality of fan-shaped valve pieces arranged in a circumferential array, both ends of any fan-shaped valve piece are rotationally connected with the annular shell and the fixed shaft respectively, and a sealing baffle is arranged on the side of any fan-shaped valve piece facing the other fan-shaped valve piece in the clockwise direction of the annular shell; a stop assembly is arranged on the inner side of the annular shell, and the stop assembly comprises a stop portion corresponding to each fan-shaped valve piece; when the fan-shaped valve piece rotates to a closed position, the fan-shaped valve piece can abut against the corresponding stop portion, and the sealing baffle on any fan-shaped valve piece can abut against the other fan-shaped valve piece. The application can enhance the reliability of the wind control valve in closing and ensure the sealing performance of the wind control valve in the closed state.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a wind control valve with good sealing performance. Background Technology

[0002] Valves are pipeline accessories used to open and close pipes, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. In use, they can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. Air control valves control airflow by adjusting the cross-sectional area of ​​the ventilation duct. However, existing air control valves often have the problem of incomplete closure, resulting in a small amount of airflow still passing through even when the valve is closed, leading to poor airflow control accuracy. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide a wind control valve that can enhance the reliability of the wind control valve's closure and ensure its sealing performance in the closed state.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a wind control valve, comprising...

[0005] The valve seat includes a fixed shaft and an annular housing arranged coaxially, wherein the annular housing and the fixed shaft define a ventilation channel.

[0006] A valve assembly, located within the ventilation channel, is used to open or close the ventilation channel. The valve assembly includes several fan-shaped valves arranged in a circumferential array. Both ends of any one of the fan-shaped valves are rotatably connected to the annular housing and a fixed shaft, respectively. Furthermore, a sealing baffle is provided on the side of any one of the fan-shaped valves facing the adjacent fan-shaped valve in the clockwise direction of the annular housing.

[0007] The stop assembly is located inside the annular housing and includes stop portions that correspond one-to-one with the sector valve pieces. When the sector valve pieces are rotated to the closed position, the sector valve pieces can abut against the corresponding stop portions, and the sealing baffle on any of the sector valve pieces can seal against the adjacent sector valve piece.

[0008] The beneficial effects of the wind control valve of this invention are as follows:

[0009] The ventilation channel is opened or closed by rotating several sector-shaped valves. When the ventilation channel is open, the size of the ventilation channel opening can be adjusted by adjusting the rotation amplitude of the sector-shaped valves, thereby controlling the airflow. The stop assembly limits the closing position of the sector-shaped valves. At the same time, the sealing baffles prevent airflow from escaping from the gap between adjacent sector-shaped valves, thus enhancing the reliability of the air control valve's closure and ensuring its sealing performance in the closed state.

[0010] Furthermore, the outer surface of the fan-shaped valve plate includes a first end face, a second end face, a first side face, a second side face, a windward side face, and a leeward side face; the first end face faces the fixed shaft, the second end face faces the annular housing, the first side face faces the adjacent fan-shaped valve plate in the clockwise direction, the second side face faces the adjacent fan-shaped valve plate in the counterclockwise direction, the windward side face the air inlet of the ventilation channel, and the leeward side face the air outlet of the ventilation channel.

[0011] Furthermore, the thickness of the fan-shaped valve plate gradually decreases from the second side to the first side. The thickness refers to the dimension between the windward side and the leeward side. Setting the thickness to gradually decrease from the second side to the first side makes the windward side closer to the first side thinner, making it easier to be blown by the airflow, thereby limiting the rotation direction of the fan-shaped valve plate when the ventilation channel is opened.

[0012] Furthermore, when the sector-shaped valve is in the closed position, its windward side is inclined to the ventilation channel; and the sealing baffle is disposed on the first side of the sector-shaped valve, protruding from the windward side of the sector-shaped valve towards the air inlet of the ventilation channel. Inclining the windward side of the sector-shaped valve to the ventilation channel makes it easier for airflow to move the valve; and positioning the sealing baffle protruding from the windward side of the sector-shaped valve further facilitates its ability to block the gap between two adjacent sector-shaped valves.

[0013] Furthermore, the sector-shaped valve plate has a mounting groove on its windward side near its first side; one end of the sealing baffle is fixedly embedded in the mounting groove, and the other end extends out of the mounting groove and is suspended. When the sector-shaped valve plate rotates to the closed position, the sealing baffle rotates synchronously, and the suspended end of the sealing baffle abuts against the leeward side of the adjacent sector-shaped valve plate, thereby blocking the gap between the two sector-shaped valve plates.

[0014] Furthermore, when the sector-shaped valve is in the closed position, in the clockwise direction, the circle containing the cross-section of the windward side of the first sector-shaped valve coincides with the circle containing the cross-section of the leeward side of the second sector-shaped valve. That is, the windward side of one sector-shaped valve is coaxial with the leeward side of the other sector-shaped valve and has the same shaft diameter. Since the sealing baffle protrudes from the windward side of the corresponding sector-shaped valve, when the circle containing the cross-section of the windward side of the first sector-shaped valve coincides with the circle containing the cross-section of the leeward side of the second sector-shaped valve, the sealing baffle will be squeezed by the leeward side of the second sector-shaped valve, thus sealing and pressing against the leeward side of the second sector-shaped valve, thereby preventing airflow from escaping from the gap between the two sector-shaped valves.

[0015] Furthermore, the stop portion includes a windward stop seat and a leeward stop seat that cooperate with each other. The windward stop seat and the leeward stop seat are offset along the circumferential and axial directions of the inner wall of the annular housing. The sector-shaped valve plate is located between the windward stop seat and the leeward stop seat. When the sector-shaped valve plate is in the closed position, the windward side of the sector-shaped valve plate can abut against the windward stop seat, and the leeward side of the sector-shaped valve plate can abut against the leeward stop seat. By setting the windward stop seat and the leeward stop seat, both the windward and leeward sides of the sector-shaped valve plate can be stopped simultaneously, thereby limiting the closing position of the sector-shaped valve plate and avoiding the problem of incomplete closure.

[0016] Furthermore, both the windward and leeward deflectors are equipped with buffer pads on the side facing the fan-shaped valve plate. The buffer pads can cushion the force exerted by the fan-shaped valve plate on the windward and leeward deflectors, thus both reducing noise and preventing surface damage caused by rigid impact.

[0017] Furthermore, the two ends of the sector-shaped valve plate are respectively provided with a first bushing and a second bushing, the straight lines of the first bushing and the second bushing coincide and both pass through the axis of the fixed shaft. The inner wall of the annular housing is provided with a first shaft corresponding to each sector-shaped valve plate and capable of being inserted into the first bushing, and the outer wall of the fixed shaft is provided with a second shaft corresponding to each sector-shaped valve plate and capable of being inserted into the second bushing. When the airflow blows the sector-shaped valve plate, the first shaft can rotate within the first bushing, and the second shaft can rotate within the second bushing. The cooperation between the first shaft and the first bushing, and the second shaft and the second bushing, ensures the installation stability of the sector-shaped valve plate between the annular housing and the fixed shaft, while also allowing the sector-shaped valve plate to rotate freely.

[0018] Furthermore, the fixed shaft and the annular housing are connected by multiple connecting rods to ensure a fixed connection between the fixed shaft and the annular housing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the wind control valve according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the sector-shaped valve plate according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the two sector valve plates in the closed position according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the valve assembly at another angle when it is in the closed position according to an embodiment of the present invention;

[0024] Figure 6 for Figure 5 A magnified view of part B in the middle.

[0025] In the picture:

[0026] 1-Valve seat; 11-Fixed shaft; 12-Annular housing; 13-Connecting rod; 14-Base;

[0027] 2-Valve plate assembly; 21-Fan-shaped valve plate; 211-First end face; 212-Second end face; 213-First side face; 214-Second side face; 215-Windward side; 2151-Mounting groove; 216-Leaning side; 217-First bushing; 218-Second bushing;

[0028] 3-Stop assembly; 31-Windward stop seat; 32-Leanback stop seat; 33-Buffer pad;

[0029] 4-Sealing baffle. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0031] Example

[0032] See appendix Figure 1-4 As shown, a wind control valve of the present invention includes a valve seat 1, a valve plate assembly 2, and a stop assembly 3. The valve seat 1 includes a fixed shaft 11 and an annular housing 12 arranged coaxially, and a ventilation channel is defined between the annular housing 12 and the fixed shaft 11.

[0033] See appendix Figure 1 , 3As shown in Figure 4, the valve assembly 2 is located within the ventilation channel and is used to open or close the ventilation channel. The valve assembly 2 includes several sector-shaped valves 21 arranged in a circumferential array. Both ends of any sector-shaped valve 21 are rotatably connected to the annular housing 12 and the fixed shaft 11, respectively. Furthermore, in a clockwise direction, each sector-shaped valve 21 has a sealing baffle 4 on the side facing the adjacent sector-shaped valve 21.

[0034] See appendix Figure 1-2 As shown, the stop assembly 3 is located inside the annular housing 12. It includes stop portions that correspond one-to-one with the sector valve pieces 21. When the sector valve pieces 21 are rotated to the closed position, the sector valve pieces 21 can abut against the corresponding stop portions, and the sealing baffle 4 on any sector valve piece 21 can seal against the adjacent sector valve piece 21.

[0035] The ventilation channel is opened or closed by rotating several sector-shaped valve plates 21. During the opening of the ventilation channel, the size of the ventilation channel opening can be adjusted by adjusting the rotation amplitude of several sector-shaped valve plates 21, thereby controlling the airflow. The stop assembly 3 limits the closing position of the sector-shaped valve plates 21. At the same time, the sealing baffle 4 seals and abuts adjacent sector-shaped valve plates 21, preventing airflow from escaping from the gap between two adjacent sector-shaped valve plates 21, thereby enhancing the reliability of the air control valve closing and ensuring its sealing performance in the closed state.

[0036] For ease of description below, the various outer surfaces of the sector valve plate 21 are defined. See the appendix for details. Figure 3-6 As shown, the outer surface of the sector-shaped valve plate 21 includes a first end face 211, a second end face 212, a first side face 213, a second side face 214, a windward side face 215, and a leeward side face 216. The first end face 211 faces the fixed shaft 11 and is adapted to the shape of the fixed shaft 11. The second end face 212 faces the annular housing 12 and is adapted to the shape of the annular housing 12. The first side face 213 and the second side face 214 are located on opposite sides of the first end face 211 and are used to connect the first end face 211 and the second end face 212, respectively; the first side face 213 faces the adjacent clockwise sector-shaped valve plate 21, and the second side face 214 faces the adjacent counterclockwise sector-shaped valve plate 21. The windward side face 215 faces the air inlet of the ventilation channel, and the leeward side face 216 faces the air outlet of the ventilation channel. The rotation axis of the sector valve plate 21 is the line connecting the center points of the first end face 211 and the second end face 212. When the sector valve plate 21 is open, it rotates counterclockwise along its rotation axis, and when the sector valve plate 21 is closed, it rotates clockwise along its rotation axis.

[0037] In some embodiments, when the sector valve 21 is in the closed position, the windward side 215 of the sector valve 21 is inclined to the ventilation channel so that when the airflow blows towards the sector valve 21 along the ventilation channel, the inclination of the sector valve 21 allows the airflow direction to form an inclination angle other than 90° with the sector valve 21, which is more conducive to the rotation of the sector valve 21, so as to realize the opening of the ventilation channel.

[0038] Furthermore, see Appendix Figure 5-6 As shown, the thickness of the fan-shaped valve plate 21 gradually decreases from the second side 214 towards the first side 213. It should be noted that the thickness refers to the dimension between the windward side 215 and the leeward side 216. Setting the thickness to gradually decrease from the second side 214 towards the first side 213 makes the windward side 215 near the first side 213 thinner, making it easier to be blown by the airflow, thereby limiting the rotation direction of the fan-shaped valve plate 21 when the ventilation channel is open.

[0039] In some embodiments, see Appendix Figure 3-4 As shown, the sealing baffle 4 is disposed on the first side 213 of the sector valve plate 21, and its length is adapted to the length of the first side 213 to ensure that the sealing baffle 4 can completely cover the gap between the two sector valve plates 21. Further details can be found in the appendix. Figure 5-6 As shown, the sealing baffle 4 protrudes from the windward side 215 of the fan-shaped valve plate 21 on the side facing the air inlet of the ventilation channel. Setting the sealing baffle 4 to protrude from the windward side 215 of the fan-shaped valve plate 21 makes it easier for the sealing baffle 4 to block the gap between two adjacent fan-shaped valve plates 21.

[0040] In some embodiments, see Appendix Figure 6 As shown, a mounting groove 2151 is provided on the windward side 215 of the sector valve plate 21 near its first side 213. One end of the sealing baffle 4 is fixedly embedded in the mounting groove 2151, and the other end extends out of the mounting groove 2151 and is suspended. When the sector valve plate 21 rotates to the closed position, the sealing baffle 4 can rotate synchronously, and the suspended end of the sealing baffle 4 can abut against the leeward side 216 of the adjacent sector valve plate 21, thereby blocking the gap between the two sector valve plates 21. When the sector valve plate 21 rotates to the open position, the suspended end of the sealing baffle 4 may bend towards the leeward side 216 of the sector valve plate 21 due to the airflow. The sealing baffle 4 will press against the first side 213. In some embodiments, the junction of the first side 213 and the mounting groove 2151 can be designed as a rounded corner structure so that when the sealing baffle 4 bends towards the leeward side 216 of the sector valve plate 21, it can better fit on the first side 213.

[0041] In some embodiments, see Appendix Figure 5As shown, when the sector valve 21 is in the closed position, in the clockwise direction of the annular housing 12, the circle containing the cross-section of the windward side 215 of the first sector valve 21 coincides with the circle containing the cross-section of the leeward side 216 of the second sector valve 21. That is, the windward side 215 of one sector valve 21 and the leeward side 216 of the other sector valve 21 are coaxial and have the same shaft diameter. Since the sealing baffle 4 protrudes from the windward side 215 of the corresponding sector valve 21, when the circle containing the cross-section of the windward side 215 of the first sector valve 21 coincides with the circle containing the cross-section of the leeward side 216 of the second sector valve 21, the sealing baffle 4 will be squeezed by the leeward side 216 of the second sector valve 21, thereby sealing and pressing against the leeward side 216 of the second sector valve 21, further enhancing the sealing effect and preventing airflow from escaping from the gap between the two sector valves 21.

[0042] In some embodiments, see Appendix Figure 2 As shown, the stop includes a windward stop seat 31 and a leeward stop seat 32 for cooperative use. The windward stop seat 31 and the leeward stop seat 32 are offset in both the circumferential and axial directions along the inner wall of the annular housing 12. A sector-shaped valve plate 21 is located between the windward stop seat 31 and the leeward stop seat 32. When the sector-shaped valve plate 21 is in the closed position, the windward side 215 of the sector-shaped valve plate 21 can abut against the windward stop seat 31, and the leeward side 216 of the sector-shaped valve plate 21 can abut against the leeward stop seat 32.

[0043] The windward stop 31 and the leeward stop 32 are offset circumferentially (i.e., in the circumferential direction) along the inner wall of the annular housing 12, so that a space is formed between the windward stop 31 and the leeward stop 32 for the sector valve plate 21 to rotate; the windward stop 31 and the leeward stop 32 are also offset axially along the inner wall of the annular housing 12 to accommodate the inclined arrangement of the sector valve plate 21 and the annular housing 12. The windward stop 31 and the leeward stop 32 simultaneously stop the windward side 215 and the leeward side 216 of the sector valve plate 21, thereby limiting the closing position of the sector valve plate 21 and avoiding the problem of incomplete closure.

[0044] Furthermore, both the windward deflector 31 and the leeward deflector 32 are provided with buffer pads 33 on the side facing the fan-shaped valve plate 21. The buffer pads 33 can buffer the force of the fan-shaped valve plate 21 on the windward deflector 31 and the leeward deflector 32, which can both reduce noise and prevent surface damage caused by rigid impact.

[0045] In some embodiments, see Appendix Figure 1 , 3As shown, the two ends of the sector-shaped valve plate 21 are respectively provided with a first bushing 217 and a second bushing 218. The straight lines of the first bushing 217 and the second bushing 218 coincide and both pass through the axis of the fixed shaft 11. The inner side wall of the annular housing 12 is provided with a first shaft corresponding to the sector-shaped valve plate 21 and can be inserted into the first bushing 217. The outer side wall of the fixed shaft 11 is provided with a second shaft corresponding to the sector-shaped valve plate 21 and can be inserted into the second bushing 218. When the airflow blows the sector-shaped valve plate 21, the first shaft can rotate in the first bushing 217 and the second shaft can rotate in the second bushing 218. The cooperation between the first shaft and the first bushing 217, and the second shaft and the second bushing 218, ensures the installation stability of the sector-shaped valve plate 21 between the annular housing 12 and the fixed shaft 11, and also realizes the free rotation of the sector-shaped valve plate 21.

[0046] In some embodiments, see Appendix Figure 1 As shown, the fixed shaft 11 and the annular housing 12 are connected by multiple connecting rods 13. Specifically, the multiple connecting rods 13 are arranged in a circumferential array, and their two ends are fixed to the fixed shaft 11 and the annular housing 12 respectively to ensure the connection stability between the fixed shaft 11 and the annular housing 12. Furthermore, a base 14 is integrally provided at the bottom of the annular housing 12.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wind control valve, characterized in that: include The valve seat includes a fixed shaft and an annular housing arranged coaxially, wherein the annular housing and the fixed shaft define a ventilation channel. A valve assembly, located within the ventilation channel, is used to open or close the ventilation channel; the valve assembly includes a plurality of sector-shaped valves arranged in a circumferential array, with both ends of each sector-shaped valve rotatably connected to the annular housing and a fixed shaft, respectively; and a sealing baffle is provided on the side of each sector-shaped valve facing the adjacent sector-shaped valve in the clockwise direction of the annular housing. The stop assembly is located inside the annular housing and includes stop portions that correspond one-to-one with the sector valve pieces. When the sector valve pieces are rotated to the closed position, the sector valve pieces can abut against the corresponding stop portions, and the sealing baffle on any of the sector valve pieces can seal against the adjacent sector valve piece. The outer surface of the fan-shaped valve plate includes a first end face, a second end face, a first side face, a second side face, a windward side face, and a leeward side face; the first end face faces the fixed shaft, the second end face faces the annular housing, the first side face faces the adjacent fan-shaped valve plate in the clockwise direction, the second side face faces the adjacent fan-shaped valve plate in the counterclockwise direction, the windward side face the air inlet of the ventilation channel, and the leeward side face the air outlet of the ventilation channel. When the sector valve is in the closed position, in two adjacent sector valves, the circle of the cross-section on the windward side of the first sector valve coincides with the circle of the cross-section on the leeward side of the second sector valve in the clockwise direction.

2. The air control valve according to claim 1, characterized in that: The thickness of the sector-shaped valve plate gradually decreases from the second side to the first side.

3. The air control valve according to claim 1, characterized in that: When the sector valve is in the closed position, the windward side of the sector valve is inclined to the ventilation channel; and the sealing baffle is disposed on the first side of the sector valve, with the sealing baffle protruding from the windward side of the sector valve towards the air inlet of the ventilation channel.

4. The air control valve according to claim 1, characterized in that: The fan-shaped valve plate has an installation groove on its windward side near its first side; one end of the sealing baffle is fixedly embedded in the installation groove, and the other end extends out of the installation groove and is suspended in the air.

5. The air control valve according to claim 1, characterized in that: The stop portion includes a windward stop seat and a leeward stop seat that work together. The windward stop seat and the leeward stop seat are offset along the circumferential and axial directions of the inner sidewall of the annular housing. The fan-shaped valve plate is located between the windward stop seat and the leeward stop seat. When the fan-shaped valve plate is in the closed position, the windward side of the fan-shaped valve plate can abut against the windward stop seat, and the leeward side of the fan-shaped valve plate can abut against the leeward stop seat.

6. The air control valve according to claim 5, characterized in that: Both the windward and leeward deflectors have buffer pads on the side facing the fan-shaped valve plate.

7. The air control valve according to claim 1, characterized in that: The two ends of the sector-shaped valve plate are respectively provided with a first bushing and a second bushing. The straight lines on which the first bushing and the second bushing are located coincide and both pass through the axis of the fixed shaft. The inner side wall of the annular housing is provided with a first shaft that corresponds to the sector-shaped valve plate and can be inserted into the first bushing. The outer side wall of the fixed shaft is provided with a second shaft that corresponds to the sector-shaped valve plate and can be inserted into the second bushing.

8. The air control valve according to claim 1, characterized in that: The fixed shaft is connected to the annular housing by multiple connecting rods.

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