flap valves and vacuum equipment

Abstract

This invention provides a flap valve and a vacuum device. The flap valve includes a rotating shaft (1), an opening and closing element (2), and a valve plate adjusting mechanism (3). The rotating shaft (1) is supported on the outer shell (9) of the cavity to drive the opening and closing element (2) to rotate. The opening and closing element (2) is installed on the radial side of the rotating shaft (1) and rotates synchronously with the rotating shaft (1). The opening and closing element (2) is connected to the rotating shaft (1) through at least one valve plate adjusting mechanism (3) to adjust the relative position of the opening and closing element (2) and the rotating shaft (1). By setting the valve plate adjusting mechanism, this invention can adjust the position of the opening and closing element, thereby improving the airtightness of the device using the flap valve. It has a simple structure, is easy to install and maintain, and has strong versatility.

Description

Technical Field

[0001] This invention relates to the field of fluid control technology, specifically to a flap valve and a vacuum device. Background Technology

[0002] A flap valve is a type of regulating valve, typically installed in pipes or equipment with cavities, used to control fluid flow. It can function as a shut-off or throttling valve. A flap valve has an opening and closing element that rotates around a predetermined axis, capable of sealing or partially covering the opening of the cavity, thereby achieving the purpose of opening, closing, or regulation.

[0003] Currently, there is virtually no domestic market for flap valves used in large-scale vacuum equipment in photovoltaic production lines.

[0004] Therefore, a new flap valve needs to be developed to be suitable for large-scale vacuum equipment in the photovoltaic industry line. Summary of the Invention

[0005] The purpose of this invention is to develop a flap valve that can be applied to large-scale vacuum equipment in the photovoltaic industry.

[0006] To address the aforementioned problems, in a first aspect, the present invention provides a flap valve, comprising a rotating shaft, an opening and closing element, and a valve plate adjusting mechanism, wherein the rotating shaft is supported on the outer shell of a cavity to drive the opening and closing element to rotate; the opening and closing element is mounted on the radial side of the rotating shaft and rotates synchronously with the rotating shaft; the opening and closing element is connected to the rotating shaft through at least one valve plate adjusting mechanism to adjust the relative position of the opening and closing element and the rotating shaft.

[0007] In another possible embodiment, the valve plate adjusting mechanism includes a connecting arm, a support base, and an adjusting pad, wherein one end of the connecting arm is fixedly connected to a rotating shaft, and the opposite end is rotatably connected to the support base; the end of the support base opposite to the connecting arm is detachably connected to the opening and closing element; and the adjusting pad is disposed between the support base and the opening and closing element.

[0008] In another possible embodiment, the flap valve includes a connecting shaft, the support base includes an mounting end and a support end disposed opposite to each other, the mounting end is connected to the connecting arm via the connecting shaft, the support end has a first leg and a second leg for abutting against the opening and closing member, one end of the adjusting pad is clamped between the opening and closing member and the first leg, and the other end of the adjusting pad is clamped between the opening and closing member and the second leg.

[0009] In another possible embodiment, the opening and closing element includes a plate-shaped body and a first limit and a second limit mounted on the plate-shaped body, with a support seat installed between the first limit and the second limit.

[0010] In another possible embodiment, a lip seal is installed on the plate-shaped body, and / or the flap valve includes a spacer ring sleeved on the rotating shaft, with a skeleton oil seal sleeved on both sides of the spacer ring, and a connection port for connecting to a vacuum pump is provided on the spacer ring.

[0011] In another possible embodiment, the flap valve includes a drive unit and a shaft connector, wherein the drive unit is used to drive the opening and closing mechanism to move; the shaft connector is perpendicular to the rotating shaft, with one end of the shaft connector connected to the rotating shaft and the other end connected to the drive unit.

[0012] In another possible embodiment, the shaft connector and the rotating shaft are connected by a tensioning member, and / or the drive unit rotates the shaft connector via a variable diameter connector.

[0013] In another possible embodiment, the flap valve includes a first support portion and a second support portion supported at both ends of a rotating shaft, one of which is provided with a self-aligning bearing and the other with a non-self-aligning bearing.

[0014] In another possible embodiment, the flap valve includes a valve housing for connecting the cavity to the outer shell of the cavity, a first support connected to the valve housing, and a second support connected to the valve housing.

[0015] A second aspect of the present invention provides a vacuum device including the aforementioned flap valve.

[0016] This invention, by incorporating a valve plate adjustment mechanism, allows for the adjustment of the angle between the opening / closing element and the rotating shaft, as well as the distance between the opening / closing element and the sealing surface of the cavity. When the flap valve is located in large equipment, its size also increases, and the deformation of the rotating shaft and the opening / closing element becomes increasingly significant in affecting the valve's sealing performance. By setting up a valve plate adjustment mechanism, the position of the opening / closing element can be adjusted, thereby improving the airtightness of the equipment using the flap valve. The structure is simple, installation and maintenance are convenient, and it has broad applicability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a flap valve provided in an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 One of the exploded diagrams of the flap valve.

[0019] Figure 3 yes Figure 1 The second exploded view of the flap valve.

[0020] Figure 4 yes Figure 1 One of the partial views.

[0021] Figure 5 yes Figure 1 Partial view two.

[0022] Figure 6 yes Figure 1 Partial view three.

[0023] Figure 7 yes Figure 1 Partial view four.

[0024] Figure 8 yes Figure 1 Partial view five.

[0025] Figure 9 yes Figure 1 Partial view six.

[0026] Figure 10 yes Figure 1 Partial view number seven.

[0027] Figure 11 This is another structural schematic diagram of the flap valve provided in an embodiment of the present invention.

[0028] Figure 12 yes Figure 11 A schematic diagram showing the installation of the flap valve located inside the cavity.

[0029] Figure 13 This is another installation diagram of the flap valve provided in an embodiment of the present invention. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To better understand the present invention, the present invention will now be described with reference to specific embodiments and accompanying drawings.

[0032] Firstly, see [the following] Figure 1-3 As shown, this invention provides a flap valve, which includes a rotating shaft 1 for driving the opening and closing element 2 to rotate, an opening and closing element 2 installed on the radial side of the rotating shaft 1 and rotating synchronously with the rotating shaft 1, and at least one valve plate adjusting mechanism 3 for adjusting the relative position of the opening and closing element 2 and the rotating shaft 1; wherein the rotating shaft 1 can be supported on the cavity shell 9 of the cavity, and the opening and closing element 2 is connected to the rotating shaft 1 through the valve plate adjusting mechanism 3. This invention, by setting the valve plate adjusting mechanism, can adjust the angle between the opening and closing element and the rotating shaft, as well as the distance from the opening and closing element to the sealing surface of the cavity to be sealed. When the flap valve of this invention is located in large equipment, the size of the flap valve will also increase accordingly, and the deformation of the rotating shaft and the opening and closing element will have an increasingly significant impact on the sealing performance of the flap valve. By setting the valve plate adjusting mechanism, the position of the opening and closing element can be adjusted, thereby improving the airtightness of the equipment using the flap valve. It has a simple structure, is easy to install and maintain, and has strong versatility.

[0033] In another embodiment of the flap valve, refer to Figure 2 As shown, the valve plate adjusting mechanism 3 includes a connecting arm 31, a support base 32, and adjusting pads 34. The adjusting pads 34 are positioned between the support base 32 and the opening / closing element 2. One end of the connecting arm 31 is fixed to the rotating shaft 1, and the other end is rotatably connected to the support base 32. This configuration allows for adjusting the position of the opening / closing element 2 by adding one or more adjusting pads 34 between the support base 32 and the opening / closing element 2. If only the number of adjusting pads 34 is increased or decreased between the support base 32 and the opening / closing element 2, the distance between the support base 32 and the opening / closing element 2 will change, thus changing the angle between the connecting arm 31 and the support base 32. Setting the connecting arm 31 and the support base 32 as a rotatable connection better accommodates this change. Furthermore, the end of the support base 32 facing away from the connecting arm 31 is detachably connected to the opening / closing element 2, facilitating the adjustment of the number of adjusting pads 34 between the support base 32 and the opening / closing element 2.

[0034] In another embodiment, reference Figure 2 As shown, the flap valve includes a connecting shaft 33, and the support base 32 includes an installation end 321 and a support end that are disposed opposite to each other. The installation end 321 is connected to the connecting arm 31 through the connecting shaft 33, and the adjusting pad 34 is clamped between the opening and closing member 2 and the support end.

[0035] refer to Figure 5 and Figure 6 As shown, the support end has a first leg 323 and a second leg 324 for abutting against the opening / closing member 2. One end of the adjusting pad 34 is clamped between the opening / closing member 2 and the first leg 323, and the other end of the adjusting pad 34 is clamped between the opening / closing member 2 and the second leg 324. The first leg 323 and the second leg 324 can be connected by a support plate 322, and the mounting end 321 is provided on the side of the support plate 322 opposite to the first leg 323 and the second leg 324.

[0036] In yet another embodiment, reference continues to... Figure 5 and Figure 6As shown, a mounting hole 311 is formed on the connecting arm 31, and the mounting hole 311 extends through the connecting arm 31 along a direction perpendicular to the axis of the rotating shaft 1. The support base 32 has a mounting end 321 that can pass through the mounting hole 311. A first shaft hole 3211 parallel to the axis of the rotating shaft 1 is formed on the mounting end 321. A second shaft hole 312 parallel to the axis of the rotating shaft 1 is formed on the connecting arm 31. The connecting shaft 33 passes through both the second shaft hole 312 and the first shaft hole 3211. In this invention, the rotational connection method of the connecting arm 31 and the support base 32 is not limited to the above embodiment, as long as the rotational connection of the connecting arm 31 and the support base 32 can be guaranteed. For example, the end of the connecting arm 31 away from the rotating shaft 1 has only a through hole extending in the same direction as the rotating shaft 1, and the end of the support base 32 facing the connecting arm 31 also has only another through hole extending in the same direction as the rotating shaft 1. The connecting arm 31 and the connecting shaft 33 can be rotated and connected by passing through these two through holes at the same time.

[0037] In another embodiment, the opening / closing member 2 includes a plate-shaped body 21 and a first and a second limit position mounted on the plate-shaped body 21, with a support base 32 mounted between the first and second limit positions. Since the adjusting pad 34 is mounted between the support base 32 and the plate-shaped body 21, the adjusting pad 34 can be prevented from falling off by mounting the support base 32 between the first and second limit positions.

[0038] In one embodiment, the first limit and the second limit are configured as a pair of connecting blocks 22, and the support base 32 is installed between the two connecting blocks 22.

[0039] To improve installation efficiency, in one embodiment, the connecting block 22 and the plate-shaped body 21 can be configured for detachable connection. The adjusting pad 34 is provided with a slot opening on one side of the adjusting pad 34, see reference. Figure 2 As shown, in the working state, a portion of the multiple adjusting bolts 35 used to connect the support base 32 and the opening / closing element 2 passes through the slot. In this embodiment, the pair of connecting blocks 22 effectively prevent the adjusting pad 34 from falling off. (Refer to...) Figure 2 As shown. This structure allows for the addition or removal of the adjusting shim 34 simply by loosening the adjusting bolt 35 on the support base 32, removing one of the two connecting blocks 22, and then installing the adjusting shim 34 between the support base 32 and the plate-shaped body 21. Finally, the removed connecting block 22 can be reinstalled. This simplifies the workflow and reduces workload.

[0040] Of course, a through hole can also be provided on the adjusting shim 34, and the adjusting bolt 35 connecting the support base 32 and the opening / closing element 2 can be inserted through the through hole. In this structure, when installing the adjusting shim 34, the adjusting bolt 35 used to connect the support base 32 and the plate-shaped body 21 needs to be completely loosened from the plate-shaped body 21 before the adjusting shim 34 is inserted and then tightened to the plate-shaped body 21. In this structure, the connecting block 22 can be omitted.

[0041] In another embodiment, reference Figure 4 As shown, a lip seal 23 is installed on the plate-shaped body 21. The lip seal 23 is installed in a sealing groove 24 formed on the side of the plate-shaped body 21 opposite to the support base 32. The sealing of the lip seal 23 is achieved by deforming its lip under fluid pressure, causing the lip to tightly adhere to the sealing surface. The higher the fluid pressure, the tighter the lip adheres to the sealing surface. After the sealing lip wears, it has a certain self-compensation ability, thus providing good sealing performance and making it suitable for reciprocating sealing applications.

[0042] In another embodiment, reference Figure 2 and Figure 9 As shown, the flap valve includes a spacer ring 58 sleeved on a rotating shaft 1. On both sides of the spacer ring 58 are skeleton oil seals 57 sleeved on the rotating shaft 1. The spacer ring 58 has a connection port for connecting to a vacuum pump. This structure allows the vacuum pump to create a vacuum in the space between the two skeleton oil seals 57 on both sides of the spacer ring 58, bringing the two skeleton oil seals 57 as close as possible and improving the seal between the skeleton oil seals 57 and the rotating shaft 1. This prevents air leakage from the rotating shaft 1, thereby improving the airtightness of the equipment equipped with this flap valve. Preferably, the spacer ring 58 is made of copper to further enhance airtightness.

[0043] In another embodiment, reference Figures 9-10 As shown, the flap valve includes a drive unit 4 and a shaft connector 7. The drive unit 4 is used to drive the opening and closing element 2 to move. One end of the shaft connector 7 is connected to the rotating shaft 1, and the other end is connected to the drive unit 4. The shaft connector 7 is perpendicular to the rotating shaft 1. With this configuration, the position of the plate-shaped body 21 can be determined by observing the position of the shaft connector 7.

[0044] One embodiment of the drive unit 4 is a cylinder. Of course, the drive unit 4 can also be a hydraulic cylinder.

[0045] In another embodiment, the shaft connector 7 and the rotating shaft 1 are connected by a clamping member 8, achieving a keyless connection between the rotating shaft 1 and the shaft connector 7. When under load, torque, axial force, or a combination of both are transmitted through the pressure and friction between the clamping member 8 and the shaft connector 7. The clamping member 8 can be a clamping sleeve, as described above. Figure 9 and Figure 10As shown; as an alternative, the shaft connector 7 and the rotating shaft 1 can also be connected by a key.

[0046] In another embodiment, the drive unit 4 rotates the connecting shaft connector 7 via a variable diameter connector. One possible structure of the variable diameter connector is described below. Figure 8 As shown, the reducing connector includes a ball head mounting hole 41 and a ball head 42 installed in the ball head mounting hole 41. A cylinder connecting shaft hole 421 is formed on the ball head 42. When the drive unit 4 and the shaft connector 7 are connected, the cylinder connecting shaft 71, which connects the drive unit 4 and the shaft connector 7, passes through both the cylinder connecting shaft hole 421 and the shaft connecting hole 72 on the shaft connector 7. With this arrangement, the cylinder connecting shaft 71 is less likely to get stuck when the drive unit 4 drives the shaft connector 7, thereby causing the rotating shaft 1 to rotate.

[0047] In another embodiment, reference Figures 1-3 and Figures 9-10 As shown, the flap valve includes a first support part 5 and a second support part 6 supported at both ends of the rotating shaft 1. One of the first support part 5 and the second support part 6 is provided with a self-aligning bearing, and the other is provided with a non-self-aligning bearing.

[0048] Of course, without considering installation difficulty and economy, both ends of the shaft 1 can also use non-self-aligning bearings.

[0049] In one embodiment, one end of the first support portion 5 and the second support portion 6 is supported by a deep groove ball bearing, and the other end is supported by a self-aligning ball bearing. This facilitates the installation of the shaft 1. Since the shaft 1 is relatively long in large equipment, it is generally installed at one end in a deep groove ball bearing. However, because the shaft 1 is long, when the axis of the shaft 1 and the axis of the deep groove ball bearing are not strictly coaxial, the end of the shaft 1 furthest from the deep groove ball bearing will deviate significantly. By using a self-aligning ball bearing, it can be quickly aligned and connected to the shaft 1, thereby reducing installation difficulty.

[0050] In another embodiment, reference Figures 11-13 As shown, the flap valve includes a valve housing 10 for connecting the cavity housing 9, referenced. Figure 11 As shown, the first support part 5 is connected to the valve housing 10, and the second support part 6 is also connected to the valve housing 10. By configuring the valve housing 10, the rotating shaft 1, the opening and closing element 2, the valve plate adjusting mechanism 3, and the first and second support parts 5 and 6 form an integral structure with the valve housing 10, allowing for assembly and disassembly as a single unit. This greatly reduces installation difficulty and improves work efficiency. Typically, the first support part 5 and the valve housing 10 are sealed together by welding, and the second support part 6 and the valve housing 10 are also sealed together by welding. This ensures the sealing performance of equipment using this flap valve.

[0051] A second aspect of the present invention provides a vacuum device including the aforementioned flap valve. The vacuum device possesses the technical advantages of the flap valve, which will not be elaborated further here.

[0052] In this vacuum device, reference Figures 11-13 As shown, when a flap valve with a housing 10 is used, the valve housing 10 and the cavity housing 9 can jointly define the cavity; the valve housing 10 can also simply serve as a mounting component for mounting the flap valve onto the cavity housing 9, such as... Figure 13 As shown, the flap valve is installed outside the cavity. The opening / closing element 2 swings from the outside of the cavity towards the cavity to seal the cavity opening. The cavity opening can be formed on the cavity housing 9, or the cavity opening can be configured to coincide with the opening 91 provided on the valve housing 10 after the flap valve is installed. Figures 11-13 In the described embodiment, the opening of the cavity coincides with the opening 91 on the valve housing 10. When the flap valve is installed in the cavity, the cavity housing 9 and the valve housing 10 are sealed together, as shown below. Figure 12 As shown, the opening and closing element 2 blocks the opening of the cavity from the inside of the cavity.

[0053] In another embodiment, the vacuum device is provided with a solenoid valve that controls the operation of the drive unit 4.

[0054] In another embodiment, the vacuum device is provided with a stroke control unit for controlling the piston rod stroke of the drive unit 4, and the control unit may be a limit switch.

[0055] In one embodiment of the vacuum equipment, the vacuum equipment includes a cavity shell 9 defining a cavity. An opening / closing element 2 is installed within the cavity, dividing the cavity into a first sub-cavity and a second sub-cavity. The opening / closing element 2 can regulate the flow rate of fluid between the first and second sub-cavities and can also completely isolate them. In this embodiment, the cavity shell 9 is hermetically connected to and communicatively connected to a valve shell 10. When maintenance of the flap valve is required, simply disconnecting the valve shell 10 from the cavity shell 9 allows the flap valve to be completely removed. Similarly, when maintenance is completed and the flap valve needs to be reinstalled, simply connecting the valve shell 10 to the cavity shell 9 allows the flap valve to be installed entirely within the vacuum equipment.

[0056] In another embodiment of the vacuum device, reference is made to Figure 13As shown, the vacuum equipment includes a cavity shell 9, which defines a cavity. The cavity shell 9 has an opening in the cavity, and an opening / closing element 2 is installed at the opening. The rotating shaft 1 is located outside the cavity. In this embodiment, the valve housing 10 merely serves to allow the flap valve to be installed as a whole with the cavity shell 9. When the flap valve needs maintenance, simply disconnecting the valve housing 10 from the cavity shell 9 allows the flap valve to be removed as a whole. Similarly, when the flap valve needs to be installed after maintenance, simply connecting the valve housing 10 to the cavity shell 9 allows the flap valve to be installed as a whole in the vacuum equipment.

[0057] To further illustrate the present invention, the installation of a flap valve according to one embodiment of the present invention will be described below.

[0058] Two skeleton oil seals 57 and a spacer ring 58 coated with high vacuum grease are arranged at intervals and pressed into the receiving cavity of the first flange 51 using a tooling press sleeve. Then, a first retaining ring 56, a deep groove ball bearing 54, a second retaining ring 55, and another deep groove ball bearing 54 are sequentially placed into the receiving cavity of the first flange 51. Next, the clamping flange 53 is fixed on the first flange 51. Then, a sealing ring 52 is set at the stepped end of the first flange 51 near the clamping flange 53 to form the first support part 5. Finally, the first support part 5 is fixed at the mounting hole on one side of the cavity, wherein the mounting hole is formed on the outer shell 9 of the cavity.

[0059] Then, a drive unit 4 is installed on the cylinder mounting seats on both sides of the cavity, and then the shaft connector 7 is installed on the cylinder reducer of the drive unit 4.

[0060] Then, insert the rotating shaft 1 into the cavity from the mounting hole on the side of the cavity away from the first support part 5, and slowly screw it into the cavity, aligning it with the first support part 5. After the rotating shaft 1 extends out of the cavity from the first support part 5, put on the tightening member 8 and move it to the shoulder of the rotating shaft 1. Align it with the corresponding hole on the shaft connector 7 that has been installed on the drive unit 4, and insert it into it without tightening it completely. At this time, one end of the rotating shaft 1 is connected in place.

[0061] Two additional skeleton oil seals 57 and a spacer ring 58 coated with high vacuum grease are arranged at intervals and pressed into the receiving cavity of the second flange 513 using a tooling press sleeve. Then, the third retaining ring 514, the self-aligning ball bearing 515, and the fourth retaining ring 516 are sequentially placed into the receiving cavity of the second flange 513. Next, a clamping flange 53 is fixed on the second flange 513, and a sealing ring 52 is fitted on it to form the second support part 6. The sealing ring 52 is used for sealing between the mounting hole on the cavity shell 9 and the rotating shaft 1. Then, the second support part 6 is slowly screwed into the cavity shell 9, aligned with the mounting holes of the rotating shaft 1 and the cavity shell 9, and fixed. At this time, the rotating shaft 1 and the first support part 5 and the second support part 6 are connected.

[0062] In this embodiment, the valve plate adjusting mechanism 3 has multiple valve plate adjusting mechanisms 3. When installing the valve plate adjusting mechanism 3, firstly, the connecting arm 31 is fixed to the rotating shaft 1, and the connecting arm 31 and the support seat 32 are rotatably connected together by the connecting shaft 33. Then, the opening and closing part 2 is fixed to the support seat 32. Next, multiple adjusting bolts 35 are used to connect the connecting arm 31 and the opening and closing part 2, and the support seat 32 and the opening and closing part 2 respectively. At the same time, the rotating shaft 1 and the adjusting pad 34 are adjusted to make the opening and closing part 2 parallel to the set plane. Finally, the rotating shaft 1 is fixed with the expansion member 8 and the clamping flange 53.

[0063] Place another tensioning piece 8 on the end of the rotating shaft 1 near the second support part 6, and operate the same as the end where the first support part 5 is located. Then adjust the angle between the two shaft connecting pieces 7 and the drive unit 4, and finally tighten the two tensioning pieces 8.

[0064] The working process of the above embodiments is as follows:

[0065] After all installations are completed, the opening and closing element 2 is parallel to the set plane, the flap valve is in the open state, and the solenoid valve is energized to cause the drive unit 4 to move through compressed air. The piston rod of the drive unit 4 extends and rotates through the drive shaft connector 7 to drive the rotating shaft 1 to rotate. Within the stroke of the drive unit 4, the lip seal ring 23 installed on the opening and closing element 2 is tightly attached to the sealing surface of the cavity, and the flap valve is in the closed state.

[0066] After the solenoid valve is de-energized, the rear piston rod retracts, causing the rotating shaft 1 to rotate, and the opening and closing element 2 returns to the initial flap valve open state.

[0067] It should be understood that the term "and / or" in this invention is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. A and B can be singular or plural. Additionally, the character " / " in this document generally indicates an "or" relationship between the preceding and following related objects, but it may also indicate an "and / or" relationship. Please refer to the preceding and following text for a more detailed understanding.

[0068] In this invention, "multiple" refers to two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0069] It should be understood that, in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flap valve, characterized in that, include: The rotating shaft (1) can be supported on the outer shell (9) of the cavity and is used to drive the opening and closing parts (2) to rotate; The opening and closing element (2) is installed on the radial side of the rotating shaft (1) and rotates synchronously with the rotating shaft (1); A valve plate adjusting mechanism (3) is used to adjust the relative position of the opening and closing element (2) and the rotating shaft (1); wherein the opening and closing element (2) is connected to the rotating shaft (1) through at least one of the valve plate adjusting mechanisms (3); Connecting shaft (33); The drive unit (4) is used to drive the opening and closing element (2) to operate; A shaft connector (7) is perpendicular to the rotating shaft (1). One end of the shaft connector (7) is connected to the rotating shaft (1), and the other end is connected to the drive unit (4). The valve plate adjusting mechanism (3) includes: The connecting arm (31) is fixed at one end to the rotating shaft (1), and the opposite end is rotatably connected to the support base (32); The support base (32) is detachably connected to the opening and closing member (2) at one end away from the connecting arm (31); An adjusting pad (34) is disposed between the support base (32) and the opening / closing member (2); The support base (32) includes an installation end (321) and a support end disposed opposite to each other. The installation end (321) is connected to the connecting arm (31) through the connecting shaft (33). The support end has a first leg (323) and a second leg (324) for abutting against the opening and closing member (2). One end of the adjusting pad (34) is clamped between the opening and closing member (2) and the first leg (323), and the other end of the adjusting pad (34) is clamped between the opening and closing member (2) and the second leg (324).

2. The flap valve according to claim 1, characterized in that, The opening and closing component (2) includes a plate-shaped body (21) and a first limit and a second limit installed on the plate-shaped body (21), and the support base (32) is installed between the first limit and the second limit.

3. The flap valve according to claim 2, characterized in that, The plate-shaped body (21) is equipped with a lip seal (23), and / or the flap valve includes a spacer (58) sleeved on the rotating shaft (1), and both sides of the spacer (58) are provided with skeleton oil seals (57) sleeved on the rotating shaft (1), and the spacer (58) is provided with a connection port for connecting to a vacuum pump.

4. The flap valve according to claim 1, characterized in that, The shaft connector (7) and the rotating shaft (1) are connected by a tensioning member (8), and / or the drive unit (4) is rotatably connected to the shaft connector (7) via a variable diameter connector.

5. The flap valve according to claim 1, characterized in that, The flap valve includes a first support part (5) and a second support part (6) supported at both ends of the rotating shaft (1). One of the first support part (5) and the second support part (6) is provided with a self-aligning bearing, and the other is provided with a non-self-aligning bearing.

6. The flap valve according to claim 5, characterized in that, The flap valve includes a valve shell (10) for connecting the cavity housing (9) to the cavity, the first support (5) is connected to the valve shell (10), and the second support (6) is also connected to the valve shell (10).

7. A vacuum device, characterized in that, Includes the flap valve as described in any one of claims 1-6.

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