A hand-operated air valve and a manufacturing process thereof

Abstract

The application relates to a manual air valve and a manufacturing process thereof and relates to the technical field of air pipe valves. The manual air valve comprises a valve body, a wind baffle is rotationally arranged in the valve body, and a sealing ring is arranged on the wind baffle in the circumferential direction; the inner circumferential wall of the valve body is provided with two clamping assemblies, and the two clamping assemblies are symmetrically arranged along the rotation axis of the wind baffle; the clamping assembly comprises a supporting arc plate for supporting the sealing ring and an abutting arc plate for abutting against one side of the sealing ring away from the supporting arc plate, and the supporting arc plate is fixedly connected with the inner circumferential wall of the valve body; the abutting arc plate is slidingly connected with the valve body in the axial direction of the valve body; and the valve body is provided with a driving device for driving the abutting arc plate to reciprocally move. When the wind baffle is rotated to abut the sealing ring against the supporting arc plate, the driving device drives the abutting arc plate to move towards the supporting arc plate, so that the abutting arc plate and the supporting arc plate are matched with each other to clamp the sealing ring, thereby reducing the possibility of deformation of the sealing ring and improving the sealing performance when the valve body is closed.

Description

Technical Field

[0001] This application relates to the field of duct valve technology, and in particular to a manual air valve and its manufacturing process. Background Technology

[0002] An air valve, also known as an air volume regulating valve, is a type of duct valve used to regulate the ventilation volume of air ducts. According to different control methods, air valves can be divided into two types: electric and manual.

[0003] A manual air valve is disclosed in related technology, including a valve body, which is cylindrical in shape. A baffle plate, also circular, is disposed within the valve body to seal the interior of the valve body. The baffle plate has a rotating shaft, the axial direction of which is radially aligned with the valve body. The rotating shaft passes through the valve body and is rotatably connected to it, allowing the baffle plate to rotate by rotating the shaft. Rotating the baffle plate adjusts its position relative to the inner circumferential wall of the valve body, thereby adjusting the ventilation volume of the valve body. To facilitate installation, the diameter of the baffle plate is generally smaller than the inner diameter of the valve body. Simultaneously, a soft sealing ring is provided along the circumference of the baffle plate. When the baffle plate rotates to its coaxial position with the valve body to close the valve body, the outer circumferential wall of the sealing ring abuts against the inner circumferential wall of the valve body, improving the sealing performance when the valve body is closed.

[0004] Regarding the aforementioned technologies, when the valve body is closed, the pressure on the side of the valve body closest to the incoming air on the baffle plate is greater than the pressure on the other side. This may cause the soft sealing ring to bend and deform, resulting in the outer peripheral wall of the sealing ring separating from the inner peripheral wall of the valve body. This leads to poor sealing performance when the valve body is closed, and therefore needs to be improved. Summary of the Invention

[0005] The purpose of this application is to provide a manual air valve and its manufacturing process to improve the sealing performance when the valve body is closed.

[0006] Firstly, the manual air valve provided in this application adopts the following technical solution:

[0007] A manual air valve includes a valve body, in which a baffle plate is rotatably disposed, and a sealing ring is disposed along the circumference of the baffle plate; two clamping assemblies are disposed on the inner peripheral wall of the valve body, and the two clamping assemblies are symmetrically arranged along the rotation axis of the baffle plate; each clamping assembly includes a supporting arc plate for supporting the sealing ring and an abutting arc plate for abutting against the side of the sealing ring opposite to the supporting arc plate, the supporting arc plate being fixedly connected to the inner peripheral wall of the valve body; the abutting arc plate being slidably connected to the valve body along the axial direction of the valve body; and the valve body is provided with a driving device for driving the abutting arc plate to reciprocate.

[0008] By adopting the above technical solution, the driving device can drive the abutting arc plate to move away from the corresponding supporting arc plate, so that the baffle plate can rotate, thereby adjusting the ventilation volume of the valve body. When the baffle plate rotates to the point where the sealing ring abuts against the supporting arc plate, the driving device moves the abutting arc plate towards the supporting arc plate, so that the abutting arc plate abuts against the side of the sealing ring away from the supporting arc plate. This allows the abutting arc plate and the supporting arc plate to cooperate with each other to clamp the sealing ring, thereby improving the stability of the sealing ring in maintaining its fixed position, reducing the possibility of the sealing ring deforming and separating from the inner circumferential wall of the valve body, and thus improving the sealing performance of the valve body when closed.

[0009] Optionally, the driving device includes an abutting part for abutting against the side wall of the wind deflector opposite to the supporting arc plate, an elastic reset member for driving the abutting arc plate to move towards the supporting arc plate, and a fixing assembly for fixing the abutting arc plate; the abutting part is connected to the abutting arc plate.

[0010] By adopting the above technical solution, when the baffle plate is rotated, the baffle plate can push against the abutting part in a direction away from the supporting arc plate, thereby causing the abutting arc plate to move away from the supporting arc plate; when the baffle plate is separated from the abutting part, the fixing component fixes the abutting arc plate; then, by rotating the baffle plate, the ventilation volume of the valve body can be adjusted; when it is necessary to close the valve body, the fixing component is loosened, and the elastic reset component can make the abutting arc plate abut against the sealing ring.

[0011] Optionally, the fixing assembly includes a fixing rod that is slidably connected to the abutting arc plate along the axial direction of the rotation axis of the baffle plate and an elastic driving member for driving the fixing rod to move in a direction away from the axis of the valve body; the inner peripheral wall of the valve body is provided with a fixing hole for inserting one end of the fixing rod.

[0012] By adopting the above technical solution, when the baffle plate rotates to the point where it disengages from the abutment part, the fixing rod aligns with the fixing hole, and the elastic drive component can drive the fixing rod to automatically insert into the fixing hole to restrict the movement of the abutment arc plate, thereby fixing the abutment arc plate; by pushing the fixing rod against the fixing hole in the axial direction of the valve body, the fixing rod can be disengaged from the fixing hole, so that the abutment arc plate can move in the direction of the support arc plate.

[0013] Optionally, the outer peripheral wall of the valve body is provided with a fixing cylinder covering the fixing hole, and a push rod for pushing the fixing rod is inserted into the fixing cylinder; the peripheral wall of the push rod is in contact with the inner peripheral wall of the fixing cylinder.

[0014] By adopting the above technical solution, the fixed cylinder and the push rod cooperate to seal the fixed hole, thereby reducing the possibility of gas in the valve body leaking out through the fixed hole and improving the sealing performance of the valve body; pressing the push rod will push the fixed rod to disengage it from the fixed hole.

[0015] Optionally, the end wall of the push rod away from the fixed rod is inclinedly provided with a guide surface, and the rotation axis of the wind baffle is provided with a drive rod; when the wind baffle moves to the position between the abutting arc plate and the corresponding supporting arc plate, the drive rod abuts against the guide surface.

[0016] By adopting the above technical solution, when the valve body is closed, the drive rod can abut against the guide surface to drive the push rod to move towards the fixed rod to push the fixed rod, so that the fixed rod can automatically disengage from the fixed hole, and the moving abutment arc plate automatically abuts against the sealing ring. The structure is simple and the operation is convenient.

[0017] Optionally, the push rod is provided with an elastic element for driving it to move away from the fixed rod.

[0018] By adopting the above technical solution, the elastic element can keep the push rod outside the fixing hole, so that the fixing rod can be inserted into the fixing hole.

[0019] Optionally, the wind deflector is provided with a drive plate on its rotation axis, and the drive plate is provided with a clearance hole along the circumference of the wind deflector's rotation axis. The clearance hole is provided through the wind deflector's rotation axis along its axial direction. A fixing screw is inserted into the clearance hole. The valve body is provided with a fixing screw hole that is threadedly engaged with the fixing screw. The fixing screw is provided with a fixing block for abutting against the drive plate.

[0020] By adopting the above technical solution, rotating the fixing screw allows the fixing block to abut against the drive plate, thereby fixing the drive plate and thus fixing the baffle plate. This helps to improve the stability of the baffle plate fixing, thereby improving the stability of the valve body ventilation volume adjustment.

[0021] Optionally, the drive plate is provided with a mounting groove for embedding the fixing block; a plurality of mounting grooves are arranged sequentially along the length direction of the clearance hole.

[0022] By adopting the above technical solution, the fixing block and the embedded groove are connected to each other to further restrict the rotation of the drive plate relative to the fixing block, thereby helping to further improve the stability of the wind deflector fixing.

[0023] Optionally, the sealing ring is provided with a connector extending in the axial direction of the wind deflector, and the connector is provided with a mating protrusion extending in the direction of the wind deflector; the wind deflector is provided with a mating hole for the mating protrusion to be embedded.

[0024] By adopting the above technical solution, the mating protrusion and the mating hole cooperate to allow the connecting parts to pull the sealing ring, which helps to improve the stability of the sealing ring and the baffle plate, thereby reducing the risk of the sealing ring deforming or falling off.

[0025] Secondly, the manufacturing process of the aforementioned manual air valve provided in this application adopts the following technical solution:

[0026] A manufacturing process for a manual air valve includes the following steps:

[0027] Install sealing rings: Install sealing rings on the outer periphery of the wind deflector; provide insertion holes on the peripheral wall of the sealing rings;

[0028] Valve body forming: The metal sheet is rolled into a cylindrical shape and the mating positions of the metal sheets are fixedly connected to each other;

[0029] Process hole: A rotating hole is provided through the outer peripheral wall of the valve body;

[0030] Install the support arc plate: Fix the support arc plate to the inner circumferential wall of the valve body;

[0031] Install the baffle plate: Place the baffle plate with the sealing ring installed into the valve body and position the baffle plate between the two supporting arc plates;

[0032] Install the rotating shaft of the wind deflector: Adjust the wind deflector to align the insertion hole with the rotation hole; insert one end of the rotating shaft of the wind deflector into the insertion hole through the rotation hole;

[0033] Install the abutment plate and drive device.

[0034] By adopting the above technical solution, the sealing ring can undergo elastic deformation during the installation of the baffle plate, allowing the baffle plate to be positioned between the two supporting arc plates. The abutting arc plate, supporting arc plates, and driving device cooperate with each other to clamp the sealing ring, thereby improving the sealing performance when the valve body is closed.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. When the baffle plate rotates to the point where the sealing ring abuts against the supporting arc plate, the driving device moves the abutting arc plate towards the supporting arc plate so that the abutting arc plate abuts against the side of the sealing ring away from the supporting arc plate. This allows the abutting arc plate and the supporting arc plate to cooperate with each other to clamp the sealing ring, thereby reducing the possibility of the sealing ring deforming and separating from the inner circumferential wall of the valve body, thus improving the sealing performance when the valve body is closed.

[0037] 2. The drive rod and the push rod cooperate with each other, which can automatically disengage the fixed rod from the fixed hole, so that the elastic reset component can automatically drive the arc plate to move. The structure is simple and easy to operate with one hand.

[0038] 3. The mating protrusions and mating holes cooperate to allow the connecting parts to pull the sealing ring, thereby improving the stability of the sealing ring and the baffle plate and reducing the risk of deformation or detachment of the sealing ring. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of a manual air valve according to this application.

[0040] Figure 2 It is along Figure 1 Schematic diagram of the cross section along line AA.

[0041] Figure 3 yes Figure 2 Enlarged view of part B in the image.

[0042] Figure 4 An exploded diagram used to illustrate the mating relationship between the fixed block and the drive board.

[0043] Figure 5 This is a diagram showing the structure of the clamping assembly with the ventilation cylinder removed.

[0044] Figure 6 It is a cross-sectional schematic diagram used to show the state of the wind deflector when it rotates to the point where it separates from the abutting arc plate.

[0045] Figure 7 It is along Figure 6 Cross-sectional view of the CC line.

[0046] Figure 8 yes Figure 7 Enlarged view of part D in the image.

[0047] In the diagram, 1. Valve body; 11. Ventilation cylinder; 111. Rotating hole; 112. Support hole; 113. Connecting convex ring; 1131. Connecting bushing; 114. Support plate; 1141. Connecting hole; 1142. Mounting hole; 115. Fixing nut; 1151. Fixing screw hole; 116. Sliding frame; 1161. Guide hole; 1162. Guide rod; 117. Fixing hole; 118. Fixing cylinder; 119. Push rod; 1191. Guide surface; 1192. Mounting ring; 1193. Elastic element; 12. Connecting flange; 2. Baffle plate; 21. Sealing ring; 211. Connecting piece; 2111. Butt joint protrusion; 212. Connecting column; 2 121. Insertion hole; 2122. Auxiliary hole; 22. Butt joint hole; 3. Auxiliary rod; 31. Support column; 4. Rotating shaft; 41. Insertion groove; 42. Sealing ring; 43. Drive plate; 431. Handle; 432. Clearance hole; 4321. Insertion groove; 433. Fixing screw; 4331. Fixing block; 434. Drive rod; 5. Clamping assembly; 51. Support arc plate; 52. Abutment arc plate; 521. Connecting arc plate; 5211. Connecting insertion hole; 522. Connecting block; 5521. Sliding hole; 6. Drive device; 61. Abutment part; 62. Elastic reset component; 63. Fixing assembly; 631. Fixing rod; 632. Elastic drive component. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1 -Appendix Figure 8 This application will be described in further detail below.

[0049] A manual air valve, see reference Figure 1 and Figure 2 The system includes a valve body 1 and a baffle plate 2. The valve body 1 includes a ventilation cylinder 11 and connecting flanges 12 sleeved at both ends of the ventilation cylinder 11. The ventilation cylinder 11 is cylindrical. The inner peripheral wall of the connecting flanges 12 is welded and fixed to the outer peripheral wall of the ventilation cylinder 11. The baffle plate 2 is circular. The baffle plate 2 is located inside the ventilation cylinder 11 and is coaxial with the ventilation cylinder 11. A sealing ring 21 is provided on the peripheral wall of the baffle plate 2. The sealing ring 21 is a closed ring along the circumference of the baffle plate 2, and the outer peripheral wall of the sealing ring 21 is in contact with the inner peripheral wall of the ventilation cylinder 11. The sealing ring 21 is made of rubber. Connectors 211 are integrally formed on both sides of the sealing ring 21 along its thickness direction. Each connector 211 is circular and fits against the corresponding sidewall of the wind deflector 2, thus enclosing the wind deflector 2 and ensuring a stable connection between the sealing ring 21 and the wind deflector 2. In another embodiment, the connector 211 can also be annular or elongated, as long as the side of the connector 211 away from the sealing ring 21 extends towards the axis of the wind deflector 2.

[0050] Reference Figure 2 and Figure 3 The wind deflector 2 has a plurality of mating holes 22 extending through its thickness; the connector 211 is integrally formed with mating protrusions 2111 extending into the mating holes 22; the connectors 211 on both sides of the wind deflector 2 are connected to each other through the mating protrusions 2111 to improve the stability of the connection between the connector 211 and the wind deflector 2. In another embodiment, the mating holes 22 can also be blind holes, with the mating protrusions 2111 cooperating with the corresponding mating holes 22 to allow the connector 211 to be stably connected to the corresponding side of the wind deflector 2.

[0051] Reference Figure 2 and Figure 3 The sealing ring 21 is integrally formed with two connecting posts 212. The axial direction of each connecting post 212 is arranged radially along the baffle plate 2, and the two connecting posts 212 are symmetrical about the axis of the baffle plate 2. The end wall of each connecting post 212 opposite to the other connecting post 212 is integrally formed with a blind hole, one of which is a plug hole 2121 and the other is an auxiliary hole 2122; the auxiliary hole 2122 is coaxially arranged with the plug hole 2121. The bottom wall of the plug hole 2121 extends to the side wall of the baffle plate 2, so that a portion of the peripheral wall of the baffle plate 2 is located inside the plug hole 2121. In another embodiment, the plug hole 2121 and the auxiliary hole 2122 can also be directly provided on the outer peripheral wall of the sealing ring 21.

[0052] Reference Figure 2 and Figure 3 A rotating hole 111 and a supporting hole 112 are provided through the outer peripheral wall of the ventilation cylinder 11. The rotating hole 111 and the supporting hole 112 are symmetrical along the axis of the ventilation cylinder 11, and the rotating hole 111 and the supporting hole 112 are coaxial. An auxiliary rod 3 is inserted into the supporting hole 112. A supporting column 31 is integrally formed at one end of the auxiliary rod 3 near the axis of the ventilation cylinder 11. The supporting column 31 is inserted into the auxiliary hole 2122 and rotates with the auxiliary hole 2122. The end wall of the supporting column 31 near the auxiliary rod 3 abuts against the inner peripheral wall of the ventilation cylinder 11 to reduce the possibility of the auxiliary rod 3 disengaging from the auxiliary hole 2122.

[0053] Reference Figure 3 and Figure 4 A connecting protrusion 113 extending away from the axis of the ventilation cylinder 11 is formed by stretching the ventilation cylinder 11 outward through a hole-drawing machine at the position of the rotating hole 111. A connecting bushing 1131 is inserted into the connecting protrusion 113 and is welded to the connecting protrusion 113. A rotating shaft 4 is inserted into the connecting bushing 1131 and is rotatably engaged with the connecting bushing 1131. One end of the rotating shaft 4, near the axis of the ventilation cylinder 11, is inserted into the insertion hole 2121 through the rotating hole 111. An insertion groove 41 is formed on the end wall of the rotating shaft 4 located in the insertion hole 2121. The insertion groove 41 is engaged with the portion of the baffle plate 2 located in the insertion hole 2121, so that the rotating shaft 4 can drive the baffle plate 2 to rotate, thereby adjusting the ventilation volume of the ventilation cylinder 11. In this embodiment, a sealing ring 42 is fitted on the peripheral wall of the rotating shaft 4 located inside the connecting bushing 1131. The outer peripheral wall of the sealing ring 42 fits against the inner peripheral wall of the connecting bushing 1131 to improve the sealing performance between the rotating shaft 4 and the connecting bushing 1131.

[0054] Reference Figure 3 and Figure 4 A support plate 114 is provided at the position of the connecting protrusion 113 on the ventilation cylinder 11. Both ends of the support plate 114 are bent towards the ventilation cylinder 11 and welded to the outer peripheral wall of the ventilation cylinder 11. A connecting hole 1141 is provided through the support plate 114 along the axial direction of the connecting protrusion 113; the end of the rotating shaft 4 away from the insertion hole 2121 is inserted through the connecting hole 1141. A drive plate 43 is sleeved on the rotating shaft 4. The drive plate 43 is located on the side of the support plate 114 away from the ventilation cylinder 11, and the drive plate 43 is welded to the rotating shaft 4. The drive plate 43 has an integrally formed handle 431 to facilitate the rotation of the drive plate 43.

[0055] Reference Figure 3 and Figure 4The drive plate 43 has a clearance hole 432 on its side wall opposite to the support plate 114, circumferentially along the rotation axis 4. The clearance hole 432 extends through the rotation axis 4 axially. The support plate 114 has a mounting hole 1142 extending through the rotation axis 4 at the location of the clearance hole 432. A fixing nut 115 is inserted into the mounting hole 1142. The threaded hole of the fixing nut 115 is a fixing screw hole 1151. The fixing screw hole 1151 is axially aligned with the rotation axis 4. The fixing nut 115 is welded to the inner wall of the mounting hole 1142. In another embodiment, the fixing screw hole 1151 can also be directly formed on the outer peripheral wall of the ventilation cylinder 11.

[0056] Reference Figure 3 and Figure 4 A fixing screw 433 is inserted into the clearance hole 432. One end of the fixing screw 433 near the support plate 114 is threaded to the inner wall of the fixing screw hole 1151. A fixing block 4331 is integrally formed at one end of the fixing screw 433. The end of the fixing block 4331 near the support plate 114 is conical. The smaller end of the conical portion of the fixing block 4331 is located near the support plate 114, and the maximum diameter of the conical portion of the fixing block 4331 is greater than the width of the clearance hole 432. A settling groove 4321 is formed on the inner wall of the clearance hole 432, and multiple settling grooves 4321 are spaced apart sequentially along the circumference of the clearance hole 432. The inner wall of the mounting groove 4321 is connected to the side of the drive plate 43 opposite to the support plate 114. By rotating the fixing screw 433, the fixing block 4331 can move towards the support plate 114, so that the fixing block 4331 can be embedded in the mounting groove 4321 and abut against the inner wall of the mounting groove 4321, thereby fixing the drive plate 43. In another embodiment, the fixing block 4331 can also directly abut against the side wall of the drive plate 43 opposite to the support plate 114 to fix the drive plate 43.

[0057] Reference Figure 2 and Figure 5 Two clamping assemblies 5 are provided inside the ventilation cylinder 11, and the two clamping assemblies 5 are symmetrically arranged along the rotation axis of the baffle plate 2. The clamping assembly 5 includes a supporting arc plate 51 and an abutting arc plate 52, both of which are coaxially arranged with the ventilation cylinder 11. The supporting arc plate 51 is welded and fixed to the inner peripheral wall of the ventilation cylinder 11, and the abutting arc plate 52 is located on the side of the baffle plate 2 opposite to the corresponding supporting arc plate 51. The supporting arc plate 51 and the abutting arc plate 52 are respectively used to abut against the side wall of the corresponding side of the sealing ring 21 to clamp the sealing ring 21.

[0058] Reference Figure 2 and Figure 5Each ventilation cylinder 11 has a sliding frame 116 located on the side of each abutting arc plate 52 opposite to the wind baffle 2. The sliding frame 116 is welded and fixed to the inner circumferential wall of the ventilation cylinder 11. The sliding frame 116 has a guide hole 1161 along the axial direction of the ventilation cylinder 11, and a guide rod 1162 is slidably connected to the inner side wall of the guide hole 1161. The supporting arc plate 51 is welded and fixed to the corresponding guide rod 1162 so that the abutting arc plate 52 can slide relative to the sliding frame 116. The ventilation cylinder 11 is provided with a driving device 6 for driving the abutting arc plate 52 to slide, thereby allowing the wind baffle 2 to rotate.

[0059] Reference Figure 2 and Figure 6 The driving device 6 includes an abutment portion 61 and an elastic reset member 62. The abutment portion 61 is arc-shaped and coaxial with the abutment arc plate 52, and integrally formed with the inner sidewall of the abutment arc plate 52, so that the abutment portion 61 abuts against the wind baffle 2 through the connector 211. When the wind baffle 2 is rotated, the wind baffle 2 can push the abutment portion 61 away from the corresponding supporting arc plate 51 through the connector 211, so as to drive the abutment arc plate 52 to move synchronously. The sidewall of the abutment arc plate 52 facing the corresponding sliding frame 116 is integrally bent to form a connecting arc plate 521, and the connecting arc plate 521 is coaxial with the abutment arc plate 52. The elastic reset member 62 includes a spring; the elastic reset member 62 is located between the abutting arc plate 52 and the corresponding sliding frame 116, and the elastic reset member 62 is sleeved on the guide rod 1162; one end of the elastic reset member 62 abuts against the abutting arc plate 52, and the other end abuts against the sliding frame 116, so as to make the abutting arc plate 52 abut against the sealing ring 21.

[0060] Reference Figure 7 and Figure 8 A connecting insertion hole 5211 is provided through the outer side wall of the connecting arc plate 521 along the axial direction of the rotation shaft 4. A connecting block 522 is welded and fixed to the inner side wall of the connecting insertion hole 5211. The end wall of the connecting block 522 away from the axis of the ventilation cylinder 11 is aligned with the outer side wall of the connecting arc plate 521. A sliding hole 5521 is provided on the end wall of the connecting block 522 away from the axis of the ventilation cylinder 11 along the axial direction of the connecting insertion hole 5211. The driving device 6 also includes a fixing component 63, which includes a fixing rod 631 and an elastic driving member 632. The sliding rod is slidably connected to the inner side wall of the sliding hole 5521 along the axial direction of the sliding hole 5521. The elastic driving member 632 includes a spring. The elastic driving member 632 is located inside the sliding hole 5521, and one end of the elastic driving member 632 abuts against the bottom wall of the sliding hole 5521, and the other end abuts against the fixing rod 631. The elastic drive member 632 is in a compressed state so that the fixing rod 631 remains in contact with the inner peripheral wall of the ventilation cylinder 11.

[0061] Reference Figure 8A fixing hole 117 is provided through the inner wall of the ventilation cylinder 11. When the abutting arc plate 52 moves to the point where the abutting part 61 disengages from the connecting member 211, the fixing rod 631 aligns with the fixing hole 117, and the elastic driving member 632 can drive the fixing rod 631 to insert into the fixing hole 117 to fix the abutting arc plate 52. In another embodiment, the sliding hole 5521 can also be directly formed on the abutting arc plate 52. In another embodiment, the fixing rod 631 can also be slidably connected to the abutting arc plate 52 through a slide rail or other structure.

[0062] Reference Figure 8 A fixed cylinder 118 is welded and fixed to the outer peripheral wall of the ventilation cylinder 11. The axial direction of the fixed cylinder 118 is arranged along the axial direction of the fixed hole 117, and the fixed cylinder 118 covers the fixed hole 117. A push rod 119 is inserted into the fixed cylinder 118. The peripheral wall of the push rod 119 fits against the inner peripheral wall of the fixed cylinder 118 to seal the fixed cylinder 118, while allowing the push rod 119 to slide relative to the fixed cylinder 118. The end wall of the push rod 119 near the fixed rod 631 is arc-shaped. When the push rod 119 is pressed, the push rod can push the fixed rod 631 to disengage the fixed rod 631 from the fixed hole 117. At this time, the end wall of the push rod 119 near the fixed rod 631 is aligned with the inner peripheral wall of the ventilation cylinder 11, so as to allow the connecting arc plate 521 to slide.

[0063] Reference Figure 7 and Figure 8 The end wall of the push rod 119 away from the fixed rod 631 has a guide surface 1191. One side of the guide surface 1191 is connected to the end wall of the corresponding end of the push rod 119, and the other side extends obliquely towards the fixed rod 631 to the peripheral wall of the push rod 119. The drive plate 43 is integrally formed with a drive rod 434, and the end of the drive rod 434 away from the drive plate 43 extends radially along the rotation axis 4. When the drive plate 43 is rotated, the drive plate 43 can drive the drive rod 434 to rotate so that the drive rod 434 abuts against the guide surface 1191. At this time, the baffle plate 2 rotates to the position between the abutting arc plate 52 and the corresponding supporting arc plate 51. If the drive plate 43 is rotated further, the drive rod 434 can push against the guide surface 1191 so that the push rod 119 moves towards the fixed rod 631, thereby allowing the fixed rod 631 to disengage from the fixing hole 117. In this embodiment, when the side wall of the drive rod 434 facing the ventilation cylinder 11 is in contact with the end wall of the push rod 119 away from the fixed rod 631, the end wall of the push rod 119 near the fixed rod 631 is aligned with the inner peripheral wall of the ventilation cylinder 11.

[0064] Reference Figure 7 and Figure 8A mounting ring 1192 is welded to the peripheral wall of one end of the push rod 119 located outside the fixed cylinder 118. The push rod 119 is provided with an elastic element 1193, which includes a spring. The elastic element 1193 is sleeved on the push rod 119, with one end welded to the fixed cylinder 118 and the other end welded to the mounting ring 1192. When the drive rod 434 disengages from the push rod 119, the elastic element 1193 can drive the push rod 119 to move away from the axis of the ventilation cylinder 11, allowing the push rod 119 to disengage from the fixing hole 117, thus facilitating the insertion of the fixing rod 631 into the fixing hole 117.

[0065] The implementation principle of this application embodiment is as follows:

[0066] When the handle 431 is turned so that the baffle plate 2 is disengaged from the abutment part 61, the elastic drive member 632 drives the fixing rod 631 to move so that the fixing rod 631 is automatically inserted into the fixing hole 117 to fix the abutment arc plate 52; then the handle 431 can be turned freely to control the opening of the ventilation cylinder 11, thereby adjusting the ventilation volume of the ventilation cylinder 11. When the ventilation cylinder 11 needs to be closed, the baffle plate 2 is rotated to the position between the abutting arc plate 52 and the corresponding supporting arc plate 51, and then the abutting arc plate 52 is rotated further toward the supporting arc plate 51 so that the sealing ring 21 abuts against the corresponding supporting arc plate 51. At the same time, the drive rod 434 can move the push rod 119 toward the fixing rod 631 so that the fixing rod 631 disengages from the fixing hole 117. This allows the elastic reset member 62 to drive the abutting arc plate 52 to move toward the corresponding supporting arc plate 51 so that the abutting arc plate 52 abuts against the sealing ring 21. This allows the supporting arc plate 51 and the abutting arc plate 52 to cooperate to clamp the sealing ring 21, improving the stability of the sealing ring 21 abutting against the inner circumferential wall of the ventilation cylinder 11, thereby improving the sealing performance of the ventilation cylinder 11 when closed.

[0067] This embodiment also provides a manufacturing process for the above-mentioned manual air valve, including the following steps:

[0068] S1: Cutting metal plates: According to the drawings, cut metal plates of various sizes using a laser cutting machine for processing ventilation cylinder 11, connecting flange 12, wind baffle 2, supporting arc plate 51, abutting arc plate 52, supporting plate 114, and driving plate 43.

[0069] S2: Install sealing ring 21: Open mating hole 22 on wind baffle 2; then connect sealing ring 21 and connector 211 to wind baffle 2 by injection molding process;

[0070] S3, Valve body 1 forming:

[0071] S31, Forming of ventilation cylinder 11: The metal plate is rolled into a cylinder and the ends of the metal plates that are connected to each other are welded to form ventilation cylinder 11.

[0072] S32: Install connecting flange 12: Fit the connecting flange 12 onto the ventilation cylinder 11; then turn the two ends of the ventilation cylinder 11 outward to reduce the possibility of the connecting flange 12 falling off; then weld the connecting flange 12 to the outer peripheral wall of the ventilation cylinder 11.

[0073] S33: Process holes: A rotating hole 111, a support hole 112, and a fixing hole 117 are opened on the outer peripheral wall of the ventilation cylinder 11; then the rotating hole 111 is broached by a hole-bending machine to form a connecting protrusion ring 113.

[0074] S34. Install the auxiliary rod 3 and weld and fix the support column 31 to the inner peripheral wall of the ventilation cylinder 11.

[0075] S35. Weld and fix the fixed cylinder 118 to the ventilation cylinder 11.

[0076] S4. Install the support arc plate 51: Weld and fix the support arc plate 51 to the inner peripheral wall of the ventilation cylinder 11.

[0077] S5: Install the wind deflector 2: Place the wind deflector 2 with the sealing ring 21 into the ventilation cylinder 11; then make the auxiliary hole 2122 rotate and engage with the support column 31, and position the wind deflector 2 between the two support arc plates 51, so that the wind deflector 2 is coaxial with the ventilation cylinder 11.

[0078] S6. Install the rotating shaft 4 of the wind deflector 2:

[0079] S61. Insert the rotating shaft 4 into the connecting protrusion ring 113 and make the rotating shaft 4 and the part of the windshield 2 located in the insertion hole 2121 be inserted.

[0080] S62. Fit the connecting sleeve 1131 onto the rotating shaft 4 and insert the connecting protrusion ring 113, and weld the connecting sleeve 1131 to the connecting protrusion ring 113.

[0081] S63. The support plate 114 is sleeved on the rotating shaft 4, and the support plate 114 is welded to the outer peripheral wall of the ventilation cylinder 11; then, the drive plate 43 is sleeved on the rotating shaft 4, and the drive plate 43 is welded and fixed to the rotating shaft 4.

[0082] S7. Install the abutting arc plate 52 and the driving device 6: Weld the sliding frame 116 to the inner peripheral wall of the ventilation cylinder 11, and make the abutting arc plate 52 abut against the sealing ring 21.

[0083] S8. Insert the push rod 119 into the fixed cylinder 118, and weld one end of the elastic element 1193 to the fixed cylinder 118 and the other end to the mounting ring 1192.

[0084] S9. Grind and clean the welded areas.

[0085] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A manual air valve, comprising a valve body (1), wherein a baffle plate (2) is rotatably disposed within the valve body (1), and a sealing ring (21) is disposed along the circumference of the baffle plate (2); characterized in that: The valve body (1) has two clamping assemblies (5) on its inner peripheral wall. The two clamping assemblies (5) are symmetrically arranged along the rotation axis of the baffle plate (2). The clamping assembly (5) includes a supporting arc plate (51) for supporting the sealing ring (21) and an abutting arc plate (52) for abutting against the side of the sealing ring (21) away from the supporting arc plate (51). The supporting arc plate (51) is fixedly connected to the inner peripheral wall of the valve body (1). The abutting arc plate (52) is slidably connected to the valve body (1) along the axial direction of the valve body (1). The valve body (1) is provided with a driving device (6) for driving the abutting arc plate (52) to reciprocate. The driving device (6) includes an abutting part (61) for abutting against the side wall of the windshield (2) away from the supporting arc plate (51), an elastic reset member (62) for driving the abutting arc plate (52) to move towards the supporting arc plate (51), and a fixing assembly (63) for fixing the abutting arc plate (52); the abutting part (61) is connected to the abutting arc plate (52); The fixing assembly (63) includes a fixing rod (631) that is slidably connected to the abutting arc plate (52) along the axial direction of the rotation axis (4) of the baffle plate (2) and an elastic drive member (632) for driving the fixing rod (631) to move away from the axis of the valve body (1); the inner peripheral wall of the valve body (1) is provided with a fixing hole (117) for inserting one end of the fixing rod (631). The outer peripheral wall of the valve body (1) is provided with a fixing cylinder (118) covering the fixing hole (117), and a push rod (119) for pushing the fixing rod (631) is inserted inside the fixing cylinder (118); the peripheral wall of the push rod (119) is in contact with the inner peripheral wall of the fixing cylinder (118). The end wall of the push rod (119) away from the fixed rod (631) is inclined with a guide surface (1191), and the rotation axis (4) of the wind baffle (2) is provided with a drive rod (434); when the wind baffle (2) moves to the position between the abutting arc plate (52) and the corresponding supporting arc plate (51), the drive rod (434) abuts against the guide surface (1191).

2. The manual air valve according to claim 1, characterized in that: The push rod (119) is provided with an elastic element (1193) for driving it to move away from the fixed rod (631).

3. The manual air valve according to claim 1, characterized in that: The wind deflector (2) has a drive plate (43) on its rotating shaft (4). The drive plate (43) has a clearance hole (432) on its circumference along the rotating shaft (4) of the wind deflector (2). The clearance hole (432) is axially through the rotating shaft (4) of the wind deflector (2). A fixing screw (433) is inserted into the clearance hole (432). The valve body (1) has a fixing screw hole (1151) that is threaded to the fixing screw (433). The fixing screw (433) has a fixing block (4331) for abutting against the drive plate (43).

4. The manual air valve according to claim 3, characterized in that: The drive plate (43) is provided with a mounting groove (4321) for mounting the fixing block (4331); a plurality of mounting grooves (4321) are arranged sequentially along the length direction of the clearance hole (432).

5. The manual air valve according to claim 1, characterized in that: The sealing ring (21) is provided with a connector (211) extending in the axial direction of the baffle plate (2), and the connector (211) is provided with a mating protrusion (2111) extending in the direction of the baffle plate (2); the baffle plate (2) is provided with a mating hole (22) for the mating protrusion (2111) to be embedded.

6. A manufacturing process for a manual air valve as described in any one of claims 1 to 5, characterized in that: The steps include the following: Install sealing ring (21): Install sealing ring (21) on the outer periphery of the baffle plate (2); provide insertion holes (2121) on the peripheral wall of sealing ring (21); Valve body (1) forming: roll the metal plate into a cylindrical shape and fix the mating positions of the metal plates to each other; Process hole: A rotating hole (111) is provided through the outer peripheral wall of the valve body (1). Install the support arc plate (51): Fix the support arc plate (51) to the inner circumferential wall of the valve body (1); Install the baffle plate (2): Place the baffle plate (2) with the sealing ring (21) inside the valve body (1) and position the baffle plate (2) between the two supporting arc plates (51); Install the rotating shaft (4) of the wind deflector (2): Adjust the wind deflector (2) to align the insertion hole (2121) with the rotating hole (111); insert one end of the rotating shaft (4) of the wind deflector (2) into the insertion hole (2121) through the rotating hole (111). Install the abutment plate (52) and the drive device (6).

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