Vacuum isolating valve

Abstract

The utility model relates to the technical field of isolating valves, in particular to a vacuum isolating valve which comprises a sealing ball (2). A valve plate (13) and a limiting structure are respectively arranged in the sealing ball (2); the valve plate (13) is connected with a connecting valve rod (8); an observation structure is arranged on the connecting valve rod (8); according to the device, the valve plate can be accurately controlled, and the opening and closing states of the valve plate and thorough sealing can be stably observed; the sealing performance of the valve plate can be improved, so that the sealing stability of the isolating valve is ensured, and the valve plate is conveniently controlled to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of isolation valves, and in particular to a vacuum isolation valve. Background Art

[0002] A vacuum isolation valve is a valve used to control the flow of gas in a vacuum system. The vacuum isolation valve can control the flow of gas in a vacuum system by controlling the opening and closing of the valve. However, it is difficult to observe the switch status of the valve plate in time when using a traditional vacuum isolation valve, and the valve plate has poor sealing performance, making it difficult to control the rotation angle of the valve plate, resulting in poor sealing performance of the isolation valve, and poor connection stability and sealing performance between the isolation valve and other items. The isolation valve is prone to wear and damage.

[0003] After searching, the applicant found that the Chinese patent document with publication number 204175999U disclosed a vacuum isolation valve on February 25, 2015, including: a valve body, a valve cover, a valve core, and a valve stem. The valve stem is also covered with a bellows, and the two ends of the bellows are respectively sealed with the valve cover and the valve core. A mechanical seal is arranged between the valve stem and the valve cover, and a fixed connection is adopted between the valve body and the valve cover. The valve column and the limit plate are all fixedly connected to the pipeline. However, the above-mentioned components still have the following problems: it is difficult to observe the switching state of the valve plate in time, and the sealing of the valve plate is poor, and it is difficult to control the rotation angle of the valve plate, resulting in poor sealing of the isolation valve, and the connection stability and sealing of the isolation valve and other objects are poor, and the isolation valve is easy to wear and cause damage.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing vacuum isolation valve. Utility Model Content

[0005] The utility model aims to provide a vacuum isolation valve which can realize observation of the valve plate state and improve the sealing performance of the valve plate.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a vacuum isolation valve, including a sealing ball; a valve plate and a limiting structure are respectively provided in the sealing ball; the valve plate is connected to a connecting valve stem, and an observation structure is provided on the connecting valve stem.

[0007] The limiting structure comprises a limiting plate; the limiting plates are arranged on both sides of the valve plate and abut against the valve plate.

[0008] The observation structure comprises a pointer and a turntable; the pointer and the turntable are both connected to the connecting valve stem.

[0009] A sealing shell is arranged on the top of the sealing ball; the connecting valve stem is sleeved in the sealing shell; a limiting block and the pointing needle are arranged on the top of the sealing shell; the limiting block and the pointing needle are in abutment with each other.

[0010] The rotating disk is arranged at the end of the connecting valve stem; and an observation window is arranged on the rotating disk.

[0011] A first sealing frame and a second sealing frame are respectively provided on both sides of the sealing ball; the first sealing frame is connected to a first connecting frame; and the second sealing frame is connected to a second connecting frame.

[0012] The first connecting frame and the second connecting frame are both provided with thread grooves.

[0013] A support plate is arranged on the top of the sealing shell; the limit block and the pointing needle are both arranged on the top of the support plate.

[0014] The limit block includes a fixed block; the fixed block is arranged on the support plate and is connected with a fixed bracket; the pointing needle abuts against the fixed bracket;

[0015] A rotating column is arranged on the top of the rotating disk.

[0016] The first sealing frame is provided with a lubricating oil tank; the second sealing frame is provided with a cleaning box; the cleaning box is provided with cleaning liquid; the top of the cleaning box is provided with a storage box, and the storage box is provided with a soft cloth.

[0017] The beneficial effects of this application are:

[0018] 1. Compared with the prior art, the vacuum isolation valve limits the movement of the valve plate through a limit plate; by connecting the valve stem, connecting the valve plate and the pointing needle, and limiting the pointing needle through a limit block, the direction of the pointing needle can be used to determine the switching state of the valve plate; and through the combination of the limit plate and the valve plate, the sealing performance inside the isolation valve is improved, and precise control of the valve plate is achieved; and the switching state of the valve plate and whether the sealing is stable can be observed conveniently and quickly, and the sealing performance of the valve plate can be improved to a certain extent, thereby ensuring that the isolation valve can be sealed safely and stably to avoid air leakage.

[0019] 2. Compared with the prior art, the vacuum isolation valve of the present invention improves the stability after connection and reduces the contact gap through the threaded grooves inside the first connecting frame and the second connecting frame; and the isolation valve can be cleaned in time through the lubricating oil tank above the first sealing frame and the cleaning box on the second sealing frame; and lubrication is performed after cleaning to reduce the wear of the isolation valve, improve the wear resistance of the isolation valve, and improve the connection stability and sealing of the isolation valve, thereby avoiding air leakage of the isolation valve caused by connection factors; and the isolation valve can be cleaned and lubricated at any time, thereby reducing the loss of the isolation valve, extending the service life of the isolation valve, and reducing the probability of damage to the isolation valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 This is the overall structure diagram of the vacuum isolation valve.

[0022] Figure 2 This is a side structural diagram of the vacuum isolation valve.

[0023] Figure 3 This is the cross-sectional structure diagram of the vacuum isolation valve.

[0024] The marks in the above figure are:

[0025] Markings in the figure are: 1. Sealing shell, 2. Sealing ball, 3. First sealing frame, 4. Second sealing frame, 5. First connecting frame, 6. Second connecting frame, 7. Threaded groove, 8. Connecting valve stem, 9. Limit block, 10. Pointing needle, 11. Rotating column, 12. Observation window, 13. Valve plate, 14. Limit plate, 15. Support plate, 16. Turntable. DETAILED DESCRIPTION

[0026] The following is a further detailed explanation of the specific implementation methods of the utility model through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the utility model and facilitating its implementation.

[0027] Figure 1 The vacuum isolation valve shown comprises a sealing ball 2; a valve plate 13 and a limit structure are respectively provided in the sealing ball 2; the valve plate 13 is connected to a connecting valve stem 8; and an observation structure is provided on the connecting valve stem 8.

[0028] The limiting structure cooperates with the valve plate 13 to limit the valve plate 13 and improve the sealing inside the isolation valve; the observation structure can conveniently and quickly observe the switching state of the valve plate 13 and whether the sealing is stable, and can improve the sealing of the valve plate 13 to a certain extent, thereby ensuring that the isolation valve can be sealed safely and stably to avoid air leakage.

[0029] The limiting structure includes limiting plates 14 ; the limiting plates 14 are arranged on both sides of the valve plate 13 and abut against the valve plate 13 .

[0030] The limit plate 14 is a semicircular plate; the limit plate 14 is fixedly connected to both sides of the inside of the sealing ball 2; when the valve plate 13 controls the isolation valve to be closed, the front and rear sides of the valve plate 13 are respectively in contact with the limit plate 14, and the limit plate 14 can keep the valve plate 13 in a state of blocking the passage; and can close the gap between the valve plate 13 and the inner wall of the sealing ball 2, effectively enhancing the sealing inside the isolation valve, thereby ensuring that the isolation valve can be sealed safely and stably to avoid air leakage.

[0031] The observation structure includes a pointing needle 10 and a rotating disk 16 ; the pointing needle 10 and the rotating disk 16 are both connected to the connecting valve stem 8 .

[0032] The pointing needle 10 is sleeved on the connecting valve stem 8 and fixedly connected to the connecting valve stem 8; the rotating disk 16 is fixedly connected to the end of the connecting valve stem 8; when the connecting valve stem 8 rotates, the pointing needle 10 and the rotating disk 16 can rotate with the connecting valve stem 8.

[0033] A sealing shell 1 is provided on the top of the sealing ball 2; a connecting valve stem 8 is sleeved in the sealing shell 1; a limit block 9 and a pointing needle 10 are provided on the top of the sealing shell 1; the limit block 9 and the pointing needle 10 are in abutment with each other.

[0034] The connecting valve stem 8 is installed in the sealing shell 1 and can rotate flexibly; the limit blocks 9 are respectively arranged along the horizontal direction and the vertical direction of the sealing ball 2; when the valve plate 13 controls the channel to be opened, the pointing needle 10 points to the limit block 9 in the vertical direction, and when the valve plate 13 controls the channel to be closed, the pointing needle 10 points to the limit block 9 in the horizontal direction; through the pointing direction of the pointing needle 10, the valve plate 13 is precisely controlled, the switching state of the valve plate 13 and whether it is completely sealed can be stably observed, and the sealing stability of the isolation valve is ensured.

[0035] The turntable 16 is provided at the end connected to the valve stem 8; the turntable 16 is provided with an observation window 12. The turntable 16 is provided with a plurality of observation windows 12; the observation windows 12 are evenly distributed along the center of the turntable 16; an observation window 12 is provided just above the pointer 10; the direction indicated by the pointer 10 can be conveniently observed, so as to quickly determine the switch state of the valve plate 13.

[0036] A first sealing frame 3 and a second sealing frame 4 are respectively provided on both sides of the sealing ball 2 ; the first sealing frame 3 is connected to a first connecting frame 5 ; and the second sealing frame 4 is connected to a second connecting frame 6 .

[0037] The first sealing frame 3 and the second sealing frame 4 extend the passage of the sealing ball 2 and can seal both sides of the sealing ball 2; the first connecting frame 5 and the second connecting frame 6 are connected to other devices.

[0038] The first connecting frame 5 and the second connecting frame 6 are both provided with thread grooves 7 .

[0039] The threaded groove 7 can ensure the stability and sealing of the connection and reduce the contact gap; it can effectively prevent the isolation valve from being disconnected from other equipment or air leakage from the connection.

[0040] A support plate 15 is provided on the top of the sealing shell 1 ; the limit block 9 and the pointing needle 10 are both provided on the top of the support plate 15 .

[0041] The support plate 15 is fixedly connected to the top of the sealing shell 1; the limit block 9 is fixedly connected to the top of the support plate 15; the pointer 10 can rotate on the top of the support plate 15; the support plate 15 can provide stable support for the pointer 10 and can provide an installation position for the limit block 9.

[0042] The limit block 9 includes a fixed block; the fixed block is arranged on the support plate 15 and is connected with a fixed bracket; the pointing needle 10 abuts against the fixed bracket; and a rotating column 11 is arranged on the top of the turntable 16 .

[0043] The fixed block is fixedly connected to the top of the support plate 15; the fixed bracket is installed on the fixed block, and the fixed block can provide support and fixation for the fixed bracket; the fixed bracket abuts against the end of the pointing needle 10; the pointing needle 10 can be stably fixed on the limit block 9, and can ensure that the pointing needle 10 points stably and the valve plate 13 is sealed and fixed or completely opened.

[0044] A lubricating oil tank is arranged on the first sealing frame 3; a cleaning box is arranged on the second sealing frame 4; cleaning liquid is arranged in the cleaning box; a storage box is arranged on the top of the cleaning box, and soft cloth is arranged in the storage box.

[0045] The lubricating oil tank can provide lubricating oil to lubricate the isolation valve; the cleaning box stores cleaning liquid inside, which can facilitate the cleaning of the isolation valve; the top of the cleaning box is fixedly connected to a storage box, which can provide cleaning tools; the storage box stores clean soft cloth inside.

[0046] The specific working process of the utility model is as follows:

[0047] A limit plate 14 is installed inside the sealing ball 2 to limit and fix the valve plate 13; a connecting valve stem 8 is installed above the valve plate 13 to control the rotation of the valve plate 13; a pointer 10 is installed on the connecting valve stem 8, and combined with the limit block 9 above the support plate 15, the state of the valve plate 13 can be quickly identified; a sealing shell 1 is installed above the sealing ball 2 to provide stable support for the support plate 15; a turntable 16 is installed above the connecting valve stem 8, a rotating column 11 is installed above the turntable 16 to control the rotation of the turntable 16, and an observation window 12 is installed on the turntable 16 for observing the position of the pointer 10; a first sealing frame 3 and a second sealing frame 4 are installed on both sides of the sealing ball 2; a lubricating oil tank is installed above the first sealing frame 3, and a cleaning box is installed above the second sealing frame 4; a first connecting frame 5 is installed on the side of the first sealing frame 3, and a second connecting frame 6 is installed on the side of the second sealing frame 4; threaded grooves 7 are provided inside the first connecting frame 5 and the second connecting frame 6 to connect with other equipment.

[0048] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A vacuum isolation valve, characterized in that: It comprises a sealing ball (2); a valve plate (13) and a limiting structure are respectively provided in the sealing ball (2); the valve plate (13) is connected to a connecting valve stem (8); and an observation structure is provided on the connecting valve stem (8); The limiting structure comprises a limiting plate (14); the limiting plate (14) is arranged on both sides of the valve plate (13) and abuts against the valve plate (13); The observation structure comprises a pointing needle (10) and a rotating disk (16); the pointing needle (10) and the rotating disk (16) are both connected to the connecting valve stem (8); A sealing shell (1) is provided on the top of the sealing ball (2); the connecting valve stem (8) is sleeved in the sealing shell (1); a limit block (9) and a pointing needle (10) are respectively provided on the top of the sealing shell (1); the limit block (9) and the pointing needle (10) are in abutment with each other.

2. A vacuum isolation valve according to claim 1, characterized in that: The rotating disk (16) is arranged at the end of the connecting valve stem (8); and an observation window (12) is arranged on the rotating disk (16).

3. A vacuum isolation valve according to any one of claims 1 to 2, characterized in that: A first sealing frame (3) and a second sealing frame (4) are respectively provided on both sides of the sealing ball (2); the first sealing frame (3) is connected to a first connecting frame (5); and the second sealing frame (4) is connected to a second connecting frame (6).

4. A vacuum isolation valve according to claim 3, characterized in that: The first connecting frame (5) and the second connecting frame (6) are both provided with thread grooves (7).

5. A vacuum isolation valve according to claim 4, characterized in that: A support plate (15) is provided on the top of the sealing shell (1); the limit block (9) and the pointing needle (10) are both provided on the top of the support plate (15).

6. A vacuum isolation valve according to claim 5, characterized in that: The limit block (9) comprises a fixed block; the fixed block is arranged on the support plate (15) and is connected to a fixed bracket; the pointing needle (10) abuts against the fixed bracket; A rotating column (11) is provided on the top of the rotating disk (16).

7. A vacuum isolation valve according to any one of claims 4 to 6, characterized in that: The first sealing frame (3) is provided with a lubricating oil tank; the second sealing frame (4) is provided with a cleaning box; the cleaning box is provided with cleaning liquid; the top of the cleaning box is provided with a storage box, and the storage box is provided with a soft cloth.

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