All-stainless-steel sealed air valve

Abstract

The utility model relates to the technical field of air valves, in particular to an all-stainless-steel sealed air valve which comprises a valve body connected between the ends of two adjacent ventilation pipes, a plurality of blades rotationally arranged in the valve body and a driving actuator arranged outside the valve body and used for controlling the blades to rotate. The actuator is driven to control a plurality of blades in the valve body to be opened or closed at the same time; each blade is of a double-layer structure and comprises a first blade body and a second blade body, the first blade body and the second blade body are of the same structure and are fixedly connected, a first sealing piece used for sealing is arranged at the sealing position of every two adjacent blades, the first sealing pieces are located on the edges of one sides of the blades, and the first sealing pieces are flexible thin plates. The thin plate is inserted and fixed between the first blade body and the second blade body, and the thin plate and the blade between every two adjacent blades can abut against each other and are in sealing fit. The air valve has the effect of improving the sealing performance between every two adjacent blades in the air valve.

Description

Technical Field

[0001] The present application relates to the technical field of air valves, and in particular to an all-stainless steel sealed air valve. Background Art

[0002] The air valve is a non-sealed valve body, which is widely used in pipelines with medium temperature less than 300℃ and nominal pressure of 0.6MPa in the production process of building materials, metallurgy, mining, electricity, etc. The structure of the air valve can refer to the electric air valve disclosed by patent number CN215981114U, which can automatically control the flow of gas inside the pipeline. The motor is used to drive the blades in the valve to rotate, and the gap between the blades is adjusted to connect, close or adjust the amount of medium. The valve body is designed and manufactured in a new structure of stainless steel sheet metal. Soft overlap is used between the blades, so the sealing performance is good, the structure is compact, the flow resistance is large, the flow volume is large, and it is resistant to high temperature gas. It is simple to operate, reliable in operation, and has a long service life.

[0003] The sealing materials between the existing closed air valve blades and between the blades and the valve body are ordinary EPT synthetic rubber materials or high-temperature resistant silicone synthetic rubber materials. Although rubber sealing materials can meet the sealing requirements, rubber sealing products will age and crack during long-term use, thereby reducing the airtightness of the air valve and thus reducing the service life of the air valve. In addition, when rubber is used as the end seal of the blade edge, the production and processing process requires manual insertion of the end sealing strip and manual cutting according to the blade length, resulting in low work efficiency. Utility Model Content

[0004] In order to improve the sealing performance between two adjacent blades inside the air valve, the present application provides an all-stainless steel sealed air valve.

[0005] The present application provides a fully stainless steel sealed air valve, which adopts the following technical solution:

[0006] A fully stainless steel sealed air valve, comprising a valve body connected between the ends of two adjacent ventilation pipes, a plurality of blades rotatably arranged inside the valve body, and a driving actuator arranged outside the valve body and used to control the rotation of the blades, wherein the plurality of blades are evenly arranged inside the valve body, and the driving actuator controls the plurality of blades inside the valve body to be opened or closed simultaneously; the blades are of a double-layer structure, comprising a first sheet body and a second sheet body, both of which have the same structure and are fixedly connected, a first sealing member for sealing is provided at the sealing portion of two adjacent blades, the first sealing member is located on one side edge of the blade, the first sealing member is a flexible thin plate, the thin plate is plugged and fixed between the first sheet body and the second sheet body, and the thin plate and the blades between two adjacent blades can abut and seal.

[0007] By adopting the above technical scheme, the sealing connection structure between two adjacent blades is updated to a hard sealing structure by replacing the previous flexible rubber material. The thin plate seal provided has the characteristics of high strength. At the same time, when the blade contacts the thin plate, the thin plate can be deformed so that the thin plate can be tightly attached to the edge of the blade, thereby increasing the contact area between the thin plate and the blade and improving the sealing effect.

[0008] Optionally, the thin plate is made of stainless steel.

[0009] By adopting the above technical solution, the strength of the thin plate made of stainless steel is improved, and the corrosion of the thin plate caused by the corrosive gas passing through the inside of the valve body is avoided, thereby reducing the sealing between the thin plate and the blades.

[0010] Optionally, the thin plate is in an L-shaped structure, and one side plate of the thin plate is inserted between the first sheet body and the second sheet body.

[0011] By adopting the above technical solution, the L-shaped thin plate improves the structural strength of the thin plate, thereby preventing the thin plate from breaking after repeated extrusion.

[0012] Optionally, the valve body and the blades are both made of stainless steel.

[0013] By adopting the above technical solution, the valve body and the blades are made of stainless steel, so that the strength of the valve body itself is improved, and at the same time, the high temperature, high humidity or corrosive gas passing through the inside of the valve body can be prevented from reducing the service life of the blades and the valve body.

[0014] Optionally, a pair of second sealing members are symmetrically arranged on the inner wall of the valve body and at the positions at both ends of the blades. The second sealing members are U-shaped stainless steel spring sheets, and the stainless steel spring sheets are rotationally sealed with the ends of the plurality of blades.

[0015] By adopting the above technical solution, the two ends of the blade are matched with the side rotation seal of the stainless steel spring sheet, and the stainless steel spring sheet is sealed with the blade end to prevent the gas in the ventilation pipe from flowing into other ventilation pipes through the gaps at the two ends of the blade.

[0016] Optionally, a pair of third seals are symmetrically arranged on the inner wall of the valve body and adjacent to the two second seals. The third seal is an L-shaped stainless steel plate, and the thin plate on the blade abuts against the stainless steel plate for sealing.

[0017] By adopting the above technical solution, when the inside of the valve body is closed, the thin plate on the blade can abut against the stainless steel plate, so that the edges of the two outermost blades on the multiple blades can be sealed with the inner wall of the valve body to prevent gas from diffusing from the gap and improve the sealing of the valve body.

[0018] Optionally, L-shaped thin plates are provided at both side edges of the blades, and the connection between two adjacent blades is sealed by abutting the two thin plates.

[0019] By adopting the above technical solution, when the blades inside the valve body are sealed, thin plates are arranged on both sides of the blades to form a flexible seal between the two blades. The two thin plates can be squeezed against each other, so that the two thin plates fit more closely and the sealing is improved.

[0020] Optionally, a fixed seal is provided on the inner wall of the valve body and between two adjacent blades. The fixed seal includes a sealing plate that is detachably fixed to the inner wall of the valve body. The length direction of the sealing plate is the same as the length direction of the blades, and the side edges of the blades are abutted against the sealing plate.

[0021] By adopting the above technical solution, when multiple blades rotate to close the interior of the valve body, the edges of the blades can abut against the sealing plate to form a tight fit. The provided sealing plate can seal the gaps between the blades to prevent air leakage.

[0022] Optionally, sealing strips are bonded to the plate surface of the sealing plate facing the edges of two adjacent blades.

[0023] By adopting the above technical solution, when the edge of the blade rotates to the sealing plate, the blade can abut against the sealing strip, so that a tight seal is formed between the blade and the sealing strip, and the sealing effect is improved by the flexible sealing strip.

[0024] Optionally, the sealing plate consists of a horizontal plate and a pair of vertical plates, the two vertical plates are vertically fixed on both sides of the horizontal plate, and the two vertical plates are away from the horizontal plate in opposite directions, the sealing strip is fixed on the plate surface of the vertical plate, and semicircular elastic sheets are fixed on both side surfaces of the horizontal plate, the length direction of the elastic sheet is the same as the length direction of the horizontal plate, the elastic sheet is fixed to the horizontal plate on the side away from the vertical plate, and the edge of the blade can produce extrusion deformation on the elastic sheet.

[0025] By adopting the above technical solution, when sealing the gap between two adjacent blades, the provided elastic sheet can press the edge of the blade onto the sealing plate, thereby improving the sealing effect.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The flexible stainless steel sheet seal provided in the present application enables the sealing structure between adjacent blades to have the sealing effect of the flexible rubber material and at the same time improve the service life of the seal. When sealing, the adjacent sheets can be squeezed and deformed, thereby improving the sealing effect between two adjacent blades;

[0028] 2. The invention of the all-stainless steel sealed air valve blade structure successfully solves the problem that rubber sealing products may age and crack during long-term use, which will reduce the sealing performance of the valve and thus reduce the service life of the valve. The gap between the blades can be sealed, and the side sealing strips can be cut mechanically to reduce labor costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0030] Figure 2 It is a schematic diagram of the second sealing member and the third sealing member according to the first embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of a first sheet and a second sheet in Embodiment 1 of the present application.

[0032] Figure 4 yes Figure 3 A magnified schematic diagram of center A.

[0033] Figure 5 It is a schematic diagram of a thin plate according to the second embodiment of the present application.

[0034] Figure 6 It is a schematic diagram of a fixed seal according to the third embodiment of the present application.

[0035] Explanation of the accompanying drawings: 1. valve body; 11. blade; 111. first sheet body; 112. second sheet body; 12. driving actuator; 2. first sealing member; 21. thin plate; 3. second sealing member; 31. stainless steel spring sheet; 4. third sealing member; 41. stainless steel plate; 5. fixed sealing member; 51. sealing plate; 511. horizontal plate; 512. vertical plate; 52. sealing strip; 53. elastic sheet. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The embodiment of the present application discloses a fully stainless steel sealed air valve.

[0038] Example 1

[0039] Reference Figure 1A fully stainless steel sealed air valve blade 11 structure includes a valve body 1 arranged at the connection between two adjacent ventilation pipes. The cross-section of the valve body 1 and the cross-section of the ventilation pipe are both rectangular. The valve body 1 is a rectangular frame structure. A plurality of blades 11 are rotatably connected inside the valve body 1. The length direction of the blades 11 is the same as the length direction of the valve body 1. The plurality of blades 11 are evenly arranged and distributed along the width direction of the valve body 1. A driving actuator 12 for controlling the simultaneous rotation of the plurality of blades 11 is fixed on the outer wall of the valve body 1. A linkage component for connecting the plurality of blades 11 is provided on the valve body 1. The driving actuator 12 is connected to one of the blades 11. When it is necessary to control the internal closure of the valve body 1, the driving actuator 12 drives one of the blades 11 to rotate. Under the action of the linkage component, the plurality of blades 11 rotate simultaneously to close the internal part of the valve body 1.

[0040] Reference Figure 1 , Figure 3 and Figure 4 A first sealing member 2 is provided at the side edge position where two adjacent blades 11 are sealed and connected inside the valve body 1. The first sealing member 2 can seal the gap between the two adjacent blades 11 to prevent gas from diffusing from the valve body 1. In the embodiment of the present application, the first sealing member 2 is a flexible thin plate 21. The thin plate 21 can be fixed at the edges of both sides of the blade 11, and the thin plate 21 can abut against the edges of the adjacent blades 11. The gap between the two adjacent blades 11 is sealed by squeezing between the flexible thin plate 21 and the blade 11. In the embodiment of the present application, each blade 1 1 is provided with a thin plate 21, and the multiple thin plates 21 are located on the same side of the multiple blades 11. When the multiple blades 11 rotate to close the inside of the valve body 1, a thin plate 21 on two adjacent blades 11 is used to seal the connection; the thin plate 21 is made of stainless steel, which makes the thin plate 21 flexible and increases the strength of the thin plate 21; the valve body 1 and the blades 11 are both made of stainless steel, which improves the strength of the valve body 1 itself and can prevent the high temperature, high humidity or corrosive gas passing through the inside of the valve body 1 from reducing the service life of the blades 11 and the valve body 1.

[0041] Reference Figure 3 and Figure 4The blade 11 is a double-layer structure, which is composed of a first sheet 111 and a second sheet 112. The first sheet 111 and the second sheet 112 have the same structure and are fixed by riveting, which increases the connection strength between the two. A rotating shaft is fixed at the middle position of the first sheet 111 and the second sheet 112, and both ends of the rotating shaft are rotatably connected to the inner wall of the valve body 1; the thin plate 21 is L-shaped, and the vertical plate on the thin plate 21 is plugged and matched between the first sheet 111 and the second sheet 112. At the position where the thin plate 21 is connected to the first sheet 111 and the second sheet 112, the thin plate 21 is welded and fixed by electric welding, so that the thin plate 21 can be firmly fixed on the blade 11.

[0042] Reference Figure 1 and Figure 2 A pair of second sealing members 3 are symmetrically arranged on the inner wall of the valve body 1 and at the positions at the two ends of the blade 11. The second sealing member 3 is a U-shaped stainless steel spring piece 31. The length direction of the stainless steel spring piece 31 is perpendicular to the length direction of the blade 11. The two stainless steel spring pieces 31 are symmetrically arranged at the two ends of the blade 11. The openings of the two stainless steel spring pieces 31 are both arranged toward the inner wall of the valve body 1. A plurality of mounting holes are opened on the side surfaces of the two stainless steel spring pieces 31 facing the ends of the blade 11. The two ends of the rotating shaft on the blade 11 are rotatably installed in the mounting holes, so that the blade 11 and the stainless steel spring piece 31 are rotationally matched. The two ends of the blade 11 are rotationally sealed with the side surfaces of the stainless steel spring piece 31. The stainless steel spring piece 31 and the ends of the blade 11 are sealed to prevent the gas in the ventilation pipe from flowing into other ventilation pipes through the gaps at the two ends of the blade 11.

[0043] Reference Figure 1 and Figure 2 A pair of third sealing members 4 are symmetrically arranged on the inner wall of the valve body 1 and adjacent to the two stainless steel spring sheets 31. The third sealing member 4 is an L-shaped stainless steel plate 41. When the inside of the valve body 1 is closed, the thin plate 21 on the blade 11 can abut against the stainless steel plate 41, so that the edges of the outermost two of the multiple blades 11 can be sealed with the inner wall of the valve body 1 to prevent gas from diffusing from the gap and improve the sealing performance of the valve body 1.

[0044] The implementation principle of Example 1 is: when the blades 11 inside the valve body 1 rotate to close the inside of the valve body 1, the multiple blades 11 that are set can seal the inside of the valve body 1, and the first seal 2 can seal the gap between two adjacent blades 11. Stainless steel material is used for abutment and sealing, which improves the sealing effect between two adjacent blades 11. The second seal 3 can seal the gap between the two ends of the blade 11 and the inner wall of the valve body 1. The third seal 4 can seal the gap between the edges of the two outermost blades 11 on the multiple blades 11 and the inner wall of the valve body 1. By setting up the three seals, the sealing performance of the valve body 1 is improved.

[0045] Example 2

[0046] Reference Figure 1 and Figure 5 The difference between this embodiment and embodiment 1 is that thin plates 21 are inserted and matched at the sealing edges on both sides of each blade 11. When two adjacent blades 11 rotate to close the inside of the valve body 1, the thin plates 21 at the edges of the two adjacent blades 11 can abut against each other. During the contact process, the two thin plates 21 can be squeezed against each other, so that the two stainless steel thin plates 21 can produce surface contact, thereby improving the sealing effect between the two thin plates 21 and avoiding the problem of air leakage.

[0047] The implementation principle of the second embodiment is as follows: when sealing between two adjacent blades 11, the flexible thin plates 21 are pressed against each other, and the sealing effect is improved by the rotational pressing force.

[0048] Example 3

[0049] Reference Figure 1 and Figure 6 The difference between this embodiment and embodiment 1 is that a fixed seal 5 is provided on the inner wall of the valve body 1 and at the position where two adjacent blades 11 are sealed and connected. The fixed seal 5 includes a sealing plate 51 detachably fixed to the inner wall of the valve body 1. The length direction of the sealing plate 51 is the same as the length direction of the blade 11. Both ends of the sealing plate 51 are detachably fixed to the inner wall of the valve body 1 by screws. When the inside of the valve body 1 is closed, the edge of the blade 11 can abut against the sealing plate 51.

[0050] The sealing plate 51 is composed of a horizontal plate 511 and a pair of vertical plates 512, and the horizontal plate 511 and the vertical plates 512 are an integrally formed structure. The two vertical plates 512 are vertically fixed on both sides of the horizontal plate 511, and the two vertical plates 512 are extended in a direction away from each other on the side away from the horizontal plate 511. When the blade 11 rotates to the position of the sealing plate 51, the edge of the blade 11 forms a seal with the vertical plates 512 on the sealing plate 51. Sealing strips 52 are bonded and fixed on the plate surfaces of the two vertical plates 512 facing the blade 11. The length direction of the sealing strip 52 is the same as the length direction of the sealing plate 51. The sealing strip 52 is made of silicone rubber resistant to high temperatures of 280°C, which improves the sealing performance between the sealing plate 51 and the blade 11 and improves the sealing performance of the sealing strip 52. The service life of the sealing plate 51 is improved to avoid the need for repeated replacement; semi-annular elastic sheets 53 are fixed on the two side plates of the transverse plate 511 of the sealing plate 51, and the length direction of the elastic sheets 53 is the same as the length direction of the sealing plate 51, and the two elastic sheets 53 are located at the positions close to the two sides of the transverse plate 511 and away from the vertical plates 512 on the same side, and one side of the elastic sheet 53 is fixed to the transverse plate 511. When the edge of the blade 11 rotates to the sealing plate 51, the edge of the blade 11 can squeeze and deform the elastic sheet 53. When the edge of the blade 11 abuts against the sealing strip 52, the elastic sheet 53 returns to its initial state, clamping the edge of the blade 11 between the sealing strip 52 and the elastic sheet 53, thereby improving the sealing performance between the blade 11 and the sealing plate 51.

[0051] The implementation principle of Example 3 is as follows: by setting a fixed sealing plate 51 at a position inside the valve body 1 and between two adjacent blades 11, when the inside of the valve body 1 is closed, the edge of the blade 11 can be rotated to the sealing plate 51, and the sealing performance between the two adjacent blades 11 is enhanced by the set sealing plate 51, and the set sealing plate 51 is easy to disassemble. When the sealing effect of the sealing plate 51 is reduced, the sealing plate 51 can be easily replaced.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fully stainless steel sealed air valve, characterized by: The invention comprises a valve body (1) connected between the ends of two adjacent ventilation pipes, a plurality of blades (11) rotatably arranged inside the valve body (1), and a driving actuator (12) arranged outside the valve body (1) and used for controlling the rotation of the blades (11). The plurality of blades (11) are evenly arranged inside the valve body (1), and the driving actuator (12) controls the plurality of blades (11) inside the valve body (1) to be opened or closed simultaneously. The blades (11) are of a double-layer structure, comprising a first sheet (111) and a second sheet (112), both of which have the same structure and are fixedly connected. A first sealing member (2) for sealing is arranged at the sealing position of the two adjacent blades (11), the first sealing member (2) is located on one side edge of the blade (11), the first sealing member (2) is a flexible thin plate (21), the thin plate (21) is inserted and fixed between the first sheet (111) and the second sheet (112), and the thin plate (21) and the blade (11) between the two adjacent blades (11) can abut against each other for sealing cooperation.

2. The all-stainless steel sealed air valve according to claim 1, characterized in that: The thin plate (21) is a thin plate (21) made of stainless steel material.

3. The all-stainless steel sealed air valve according to claim 1, characterized in that: The thin plate (21) is in an L-shaped structure, and one side plate of the thin plate (21) is inserted between the first plate body (111) and the second plate body (112).

4. The all-stainless steel sealed air valve according to claim 1, characterized in that: The valve body (1) and the blade (11) are both made of stainless steel.

5. The all-stainless steel sealed air valve according to claim 1, characterized in that: A pair of second sealing members (3) are symmetrically arranged on the inner wall of the valve body (1) and at the positions at both ends of the blades (11); the second sealing members (3) are U-shaped stainless steel spring sheets (31); the stainless steel spring sheets (31) are rotatably sealed with the ends of the plurality of blades (11).

6. The all-stainless steel sealed air valve according to claim 1, characterized in that: A pair of third sealing members (4) are symmetrically arranged on the inner wall of the valve body (1) and at positions adjacent to the two second sealing members (3); the third sealing member (4) is an L-shaped stainless steel plate (41); and the thin plate (21) on the blade (11) is in abutment and sealing cooperation with the stainless steel plate (41).

7. The all-stainless steel sealed air valve according to claim 1, characterized in that: L-shaped thin plates (21) are provided at both side edges of the blades (11), and the connection between two adjacent blades (11) is sealed by abutting the two thin plates (21).

8. A fully stainless steel sealed air valve, characterized by: The invention comprises a valve body (1) connected between the ends of two adjacent ventilation pipes, a plurality of blades (11) rotatably arranged inside the valve body (1), and a driving actuator (12) arranged outside the valve body (1) and used to control the rotation of the blades (11), wherein the plurality of blades (11) are evenly arranged inside the valve body (1), and the driving actuator (12) controls the plurality of blades (11) inside the valve body (1) to be opened or closed simultaneously; the blades (11) are of a double-layer structure, comprising a first blade body (111) and a second blade body (112), both of which have the same structure and are fixedly connected; a fixed sealing member (5) is arranged on the inner wall of the valve body (1) and at a position between two adjacent blades (11); the fixed sealing member (5) comprises a sealing plate (51) detachably fixed to the inner wall of the valve body (1), the length direction of the sealing plate (51) being the same as the length direction of the blades (11), and the side edges of the blades (11) abut against the sealing plate (51).

9. The all-stainless steel sealed air valve according to claim 8, characterized in that: Sealing strips (52) are bonded to the plate surface of the sealing plate (51) facing the edges of two adjacent blades (11).

10. The all-stainless steel sealed air valve according to claim 9, characterized in that: The sealing plate (51) is composed of a transverse plate (511) and a pair of vertical plates (512). The two vertical plates (512) are vertically fixed on both sides of the transverse plate (511), and the sides of the two vertical plates (512) away from the transverse plate (511) are away from each other in opposite directions. The sealing strip (52) is fixed on the plate surface of the vertical plate (512). Semicircular elastic sheets (53) are fixed on both side surfaces of the transverse plate (511). The length direction of the elastic sheet (53) is the same as that of the transverse plate (511). The side of the elastic sheet (53) away from the vertical plate (512) is fixed to the transverse plate (511), and the edge of the blade (11) can produce extrusion deformation on the elastic sheet (53).

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