Valve capable of preventing mistaken opening

Abstract

The utility model belongs to the field of valves, and particularly relates to a mistaken opening prevention valve which comprises a valve body, a valve rod is rotatably connected to an inner cavity of the valve body, a valve plate is fixedly connected to the surface of the valve rod, a hand wheel is fixedly connected to the surface of the valve rod, and an anti-rotation mechanism is arranged on one side of the valve body. The anti-rotation mechanism comprises a fixing plate, one side of the fixing plate is fixedly connected to the surface of the valve body, one side of the fixing plate is rotationally connected with a rotating plate, and an inner cavity of the rotating plate is rotationally connected with a connecting plate; when the rotating plate is shifted to rotate to the right side, the rotating plate can drive the spring to stretch through the first rotating block, meanwhile, the spring can drive the connecting plate to rotate to the right side together through the second rotating block, and meanwhile, the connecting plate can drive the limiting plate to move into the first clamping groove and the second clamping groove to limit the valve rod; the valve rod cannot rotate in the valve body, so that the situation that the valve plate rotates and is opened by mistake is not prone to occurring, and safety accidents are not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a valve that prevents mis-opening. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. They are widely used in various industrial and civil fields. There are many types of valves. According to different classification standards, they can be divided into many types, such as ball valves, gate valves, butterfly valves, globe valves, check valves, safety valves, needle valves, plug valves, angle valves, solenoid valves, etc.

[0003] In the prior art, a valve is usually connected between two pipes, and the opening and closing of the pipes is achieved by rotating the internal valve disc. The valve disc inside the valve is mainly controlled by the external valve stem, but most valve stems lack some anti-rotation functions and are prone to rotation due to accidental touch, thereby causing the valve disc to open accidentally, which can easily lead to serious safety accidents. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, some valve stems lack some anti-rotation functions and are prone to rotation due to accidental touch, thereby causing the valve disc to open by mistake, which can easily lead to serious safety accidents. The utility model proposes a valve that prevents accidental opening.

[0005] The utility model solves the technical problem by adopting the following technical solution: an anti-mis-opening valve, comprising a valve body, an inner cavity of the valve body being rotatably connected to a valve stem, a surface of the valve stem being fixedly connected to a valve disc, a surface of the valve stem being fixedly connected to a hand wheel, and an anti-rotation mechanism being provided on one side of the valve body;

[0006] The anti-rotation mechanism includes a fixed plate, one side of the fixed plate is fixedly connected to the surface of the valve body, one side of the fixed plate is rotatably connected to the rotating plate, the inner cavity of the rotating plate is rotatably connected to the connecting plate, the surface of the connecting plate is fixedly connected to the limiting plate, the surface of the valve body is provided with a first slot, the surface of the valve stem is provided with a second slot, one side of the rotating plate is fixedly connected to the first fixing rod, the surface of the first fixing rod is rotatably connected to the first rotating block, one side of the connecting plate is fixedly connected to the second fixing rod, the surface of the second fixing rod is rotatably connected to the second rotating block, the bottom of the first rotating block is fixedly connected to a spring, and the bottom of the spring is fixedly connected to the top of the second rotating block.

[0007] Preferably, a first hollow groove is provided on the surface of the fixed plate, an inner cavity of the first hollow groove is rotatably connected to a T-shaped connecting block, and one side of the T-shaped connecting block is fixedly connected to one side of the rotating plate.

[0008] Preferably, a second hollow groove is provided on the surface of the connecting plate, and a fixing block is provided in the inner cavity of the second hollow groove, and one side of the fixing block is fixedly connected to the inner cavity of the rotating plate.

[0009] Preferably, a guide block is fixedly connected to the top of the valve body, a pointing block is provided on the top of the guide block, and one side of the pointing block is fixedly connected to the surface of the valve stem.

[0010] Preferably, a shift rod is fixedly connected to the surface of the rotating plate, and a rubber sleeve is fixedly connected to the surface of the shift rod.

[0011] Preferably, a limiting ring block is provided on one side of the first rotating block, and the inner cavity of the limiting ring block is fixedly connected to the surface of the first fixing rod.

[0012] Preferably, a reinforcement rod is fixedly connected to the bottom of the fixing plate, and one side of the reinforcement rod is fixedly connected to the surface of the valve body.

[0013] The utility model is beneficial in that:

[0014] The utility model discloses that when the rotating plate is rotated to the right by toggling the rotating plate, the rotating plate will drive the spring to stretch through the first rotating block, and the spring will drive the connecting plate to rotate to the right together through the second rotating block. At the same time, the connecting plate will also drive the limiting plate to move into the inside of the first clamping groove and the second clamping groove to limit the valve stem, so that the valve stem cannot rotate inside the valve body, thereby preventing the valve disc from accidentally opening by rotation, and thus preventing safety accidents. When the valve stem needs to be rotated, it is only necessary to rotate the rotating plate to the left, and the rotating plate will drive the spring to stretch through the first rotating block. The stretched spring will use elastic force to drive the second rotating block to drive the connecting plate to rotate to the left together, and at the same time, the connecting plate will also drive the limiting plate to move out of the inside of the second clamping groove and the first clamping groove. At this time, the valve stem and the valve disc can rotate normally, achieving the effect of limiting the valve stem, preventing the valve stem from rotating inside the valve body, thereby preventing the valve disc from accidentally opening by rotation, and thus preventing safety accidents. It solves the problem that some valve stems lack some anti-rotation functions and are prone to rotate under accidental touch, thereby causing the valve disc to accidentally open, which can easily lead to serious safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall device of the utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the valve stem of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the rotating plate of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the spring of the utility model;

[0020] Figure 5 It is a cross-sectional schematic diagram of the T-shaped connecting block of the present invention.

[0021] In the figure: 1. valve body; 2. valve stem; 3. valve plate; 4. handwheel; 5. anti-rotation mechanism; 501. fixed plate; 502. rotating plate; 503. connecting plate; 504. limit plate; 505. first slot; 506. second slot; 507. first fixing rod; 508. first rotating block; 509. second fixing rod; 510. second rotating block; 511. spring; 6. first hollow groove; 7. T-shaped connecting block; 8. second hollow groove; 9. fixed block; 10. guide block; 11. pointing block; 12. shift rod; 13. rubber sleeve; 14. limit ring block; 15. reinforcement rod. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The following is combined with Figure 1-5 To further explain this application,

[0024] The embodiment of the present application discloses a valve that prevents accidental opening. Figure 1-4 A valve that prevents accidental opening includes a valve body 1, the inner cavity of the valve body 1 is rotatably connected to a valve stem 2, the surface of the valve stem 2 is fixedly connected to a valve disc 3, the surface of the valve stem 2 is fixedly connected to a handwheel 4, and an anti-rotation mechanism 5 is provided on one side of the valve body 1. The valve body 1 can be connected between two pipes, and the valve stem 2 can drive the valve disc 3 to rotate inside the valve body 1, thereby realizing the opening and closing of the valve body 1, and the handwheel 4 can facilitate the rotation of the valve stem 2.

[0025] The anti-rotation mechanism 5 includes a fixed plate 501, one side of the fixed plate 501 is fixedly connected to the surface of the valve body 1, one side of the fixed plate 501 is rotatably connected to a rotating plate 502, the inner cavity of the rotating plate 502 is rotatably connected to a connecting plate 503, the surface of the connecting plate 503 is fixedly connected to a limit plate 504, a first clamping groove 505 is provided on the surface of the valve body 1, a second clamping groove 506 is provided on the surface of the valve stem 2, one side of the rotating plate 502 is fixedly connected to a first fixing rod 507, the surface of the first fixing rod 507 is rotatably connected to a first rotating block 508, one side of the connecting plate 503 is fixedly connected to a second fixing rod 509, the surface of the second fixing rod 509 is rotatably connected to a second rotating block 510, the bottom of the first rotating block 508 is fixedly connected to a spring 511, and the bottom of the spring 511 is fixedly connected to the top of the second rotating block 510;

[0026] The fixing plate 501 can be used to support the rotating plate 502 so that the rotating plate 502 can rotate on one side of the valve body 1. The connecting plate 503 is connected to the inside of the rotating plate 502 and can rotate inside the rotating plate 502, and drives the limiting plate 504 to rotate together when rotating. The inside of the first slot 505 and the second slot 506 can be used to place the limiting plate 504 so that the limiting plate 504 can limit the valve stem 2 through the valve body 1, which makes the valve stem 2 unable to rotate inside the valve body 1, thereby making it difficult for the valve disc 3 to rotate and open by mistake, and thus it is not easy to cause a safety accident. The first fixing rod 507 can be used to connect the first rotating block 508 so that the first rotating block 508 can rotate on one side of the rotating plate 502, and the second fixing rod 509 can be connected to the second rotating block 510 so that the second rotating block When the rotating plate 502 is rotated to the left with the connection point between the rotating plate 502 and the connecting plate 503 as the axis, the spring 511 will pull the connecting plate 503 to the left due to the elastic force, and the limit plate 504 will be driven by the connecting plate 503 to move together, thereby disengaging from the second slot 506 and the first slot 505, which allows the valve stem 2 and the valve disc 3 to rotate normally. Then, the rotating plate 502 is reversed to reset, and the connecting plate 503 will also drive the limit plate 504 to move back into the first slot 505 and the second slot 506, and continue to limit the valve stem 2.

[0027] Reference Figure 5A first hollow groove 6 is provided on the surface of the fixed plate 501, and the inner cavity of the first hollow groove 6 is rotatably connected to a T-shaped connecting block 7. One side of the T-shaped connecting block 7 is fixedly connected to one side of the rotating plate 502. The interior of the first hollow groove 6 can be used to place the T-shaped connecting block 7, and the T-shaped connecting block 7 can reinforce the rotating plate 502, so that the rotation of the rotating plate 502 on the fixed plate 501 is more stable and it is not easy to separate from the fixed plate 501.

[0028] Reference Figure 5 A second hollow groove 8 is provided on the surface of the connecting plate 503, and a fixing block 9 is provided in the inner cavity of the second hollow groove 8. One side of the fixing block 9 is fixedly connected to the inner cavity of the rotating plate 502. The interior of the second hollow groove 8 can be used to place the fixing block 9, so that the fixing block 9 can limit the connecting plate 503, making the connection between the connecting plate 503 and the rotating plate 502 more firm and less likely to separate.

[0029] Reference Figure 3 The top of the valve body 1 is fixedly connected with a guide block 10, and the top of the guide block 10 is provided with a pointing block 11. One side of the pointing block 11 is fixedly connected to the surface of the valve stem 2. The guide block 10 is connected to the top of the valve body 1, and the pointing block 11 can be driven by the valve stem 2 to rotate. At this time, the guide block 10 can guide the pointing block 11, so that as long as the pointing block 11 stops on the upper side of the guide block 10, the first card slot 505 and the second card slot 506 can be aligned together, so that the second card slot 506 can smoothly move into the first card slot 505 and the second card slot 506.

[0030] Reference Figure 3 The surface of the rotating plate 502 is fixedly connected to a lever 12, and the surface of the lever 12 is fixedly connected to a rubber sleeve 13. The lever 12 can make it more convenient for people to rotate the rotating plate 502, and the rubber sleeve 13 can play an anti-slip role, making it less likely for the hand to slip when moving the lever 12, and more comfortable.

[0031] Reference Figure 4 A limiting ring block 14 is provided on one side of the first rotating block 508, and the inner cavity of the limiting ring block 14 is fixedly connected to the surface of the first fixed rod 507. The limiting ring block 14 can limit the first rotating block 508, so that when the first rotating block 508 rotates on the surface of the first fixed rod 507, it is not easy to separate from the first fixed rod 507, and a limiting ring block 14 is also provided on one side of the second rotating block 510, so that the second fixed rod 509 is also not easy to separate from the second rotating block 510.

[0032] Reference Figure 3The bottom of the fixed plate 501 is fixedly connected with a reinforcement rod 15, and one side of the reinforcement rod 15 is fixedly connected to the surface of the valve body 1. The reinforcement rod 15 can support and reinforce the bottom of the fixed plate 501, so that the fixed plate 501 is more stably connected to the surface of the valve body 1.

[0033] Working principle: When using this device, first, the valve body 1 can be connected between the two pipes through the flange, and the valve stem 2 can be rotated to drive the valve disc 3 to rotate together inside the valve body 1, thereby realizing the opening and closing effect of the valve body 1. When there is no need to rotate the valve stem 2 and the valve disc 3, the rotating plate 502 can be directly rotated. When the rotating plate 502 rotates to the right, the rotating plate 502 will drive the spring 511 to stretch through the first rotating block 508, and the first rotating block 508 will rotate on the outside of the first fixed rod 507. At the same time, the spring 511 will drive the connecting plate 503 to rotate to the right through the second rotating block 510. At the same time, the connecting plate 503 will also drive the limiting plate 504 to rotate together, and then the limiting plate 504 will move into the first slot 505 and the second slot 506. The valve stem 2 is limited so that the valve stem 2 cannot rotate inside the valve body 1, thereby making it difficult for the valve disc 3 to rotate and open by mistake, and thus safety accidents are not likely to occur. When the valve stem 2 needs to be rotated, it is only necessary to rotate the rotating plate 502 to the left. The rotating plate 502 will drive the spring 511 to stretch through the first rotating block 508. The stretched spring 511 will use the elastic force to drive the second rotating block 510 to drive the connecting plate 503 to rotate to the left together. At the same time, the connecting plate 503 will also drive the limiting plate 504 to move out of the second clamping groove 506 and the first clamping groove 505. At this time, the valve stem 2 and the valve disc 3 can rotate normally. This can solve the problem that some valve stems 2 lack some anti-rotation functions, which are easy to rotate under accidental touch, thereby causing the valve disc 3 to open by mistake, which can easily lead to serious safety accidents.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A valve that prevents accidental opening, characterized in that: The valve body (1) comprises a valve stem (2) rotatably connected to the inner cavity of the valve body (1), a valve plate (3) fixedly connected to the surface of the valve stem (2), a hand wheel (4) fixedly connected to the surface of the valve stem (2), and an anti-rotation mechanism (5) provided on one side of the valve body (1); The anti-rotation mechanism (5) comprises a fixed plate (501), one side of the fixed plate (501) is fixedly connected to the surface of the valve body (1), one side of the fixed plate (501) is rotatably connected to a rotating plate (502), the inner cavity of the rotating plate (502) is rotatably connected to a connecting plate (503), the surface of the connecting plate (503) is fixedly connected to a limiting plate (504), a first clamping groove (505) is provided on the surface of the valve body (1), and a second clamping groove (506) is provided on the surface of the valve stem (2). One side of the rotating plate (502) is fixedly connected to a first fixed rod (507), and the surface of the first fixed rod (507) is rotatably connected to a first rotating block (508). One side of the connecting plate (503) is fixedly connected to a second fixed rod (509), and the surface of the second fixed rod (509) is rotatably connected to a second rotating block (510). The bottom of the first rotating block (508) is fixedly connected to a spring (511), and the bottom of the spring (511) is fixedly connected to the top of the second rotating block (510).

2. The anti-misopening valve according to claim 1, characterized in that: A first hollow groove (6) is provided on the surface of the fixed plate (501), and a T-shaped connecting block (7) is rotatably connected to the inner cavity of the first hollow groove (6), and one side of the T-shaped connecting block (7) is fixedly connected to one side of the rotating plate (502).

3. The anti-misopening valve according to claim 1, characterized in that: A second hollow groove (8) is provided on the surface of the connecting plate (503), and a fixing block (9) is provided in the inner cavity of the second hollow groove (8), and one side of the fixing block (9) is fixedly connected to the inner cavity of the rotating plate (502).

4. The anti-misopening valve according to claim 1, characterized in that: The top of the valve body (1) is fixedly connected to a guide block (10), the top of the guide block (10) is provided with a pointing block (11), and one side of the pointing block (11) is fixedly connected to the surface of the valve stem (2).

5. The anti-misopening valve according to claim 1, characterized in that: The surface of the rotating plate (502) is fixedly connected to a shifting rod (12), and the surface of the shifting rod (12) is fixedly connected to a rubber sleeve (13).

6. The anti-misopening valve according to claim 1, characterized in that: A limiting ring block (14) is provided on one side of the first rotating block (508), and the inner cavity of the limiting ring block (14) is fixedly connected to the surface of the first fixing rod (507).

7. The anti-mis-opening valve according to claim 2, characterized in that: A reinforcing rod (15) is fixedly connected to the bottom of the fixing plate (501), and one side of the reinforcing rod (15) is fixedly connected to the surface of the valve body (1).

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