Pneumatic high-pressure valve

Abstract

The utility model relates to the technical field of valves, and discloses a pneumatic high-pressure valve which comprises a valve body, a valve seat is installed at the upper end of the valve body, an opening and closing mechanism is jointly arranged in the valve body and the valve seat, a connecting pipe is connected to the upper surface of the valve seat in a penetrating and rotating mode, and a threaded rod is connected to the interior of the connecting pipe in a threaded mode. A connecting block is installed at the lower end of the threaded rod, a face gear is installed on the portion, above the valve seat, of the outer portion of the connecting pipe, and a positioning mechanism is arranged on the portion, on the right side of the connecting pipe, of the upper surface of the valve seat. The connecting pipe is rotated to drive the threaded rod to descend, so that the valve clack descends, when the air supply mechanism is damaged, a channel of the valve body is manually opened, a face gear is clamped by a positioning block in the positioning mechanism, the connecting pipe is fixed, and the connecting pipe cannot rotate when not needed to rotate; therefore, the situation that the connecting pipe is driven to rotate by mistaken touch or vibration of fluid is avoided, and then the situation that the state of the adjusted valve body channel is changed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pneumatic high-pressure valve. Background Art

[0002] Pneumatic high-pressure valves are driven by air pressure and have the advantages of sensitive response and fast opening and closing speed. This feature enables the valve to respond quickly to control signals and quickly cut off or circulate the medium, meeting the high requirements for fluid control in industrial automation systems.

[0003] When the air cylinder or air pipe of the existing pneumatic high-pressure differential regulating valve is damaged, if there is no gas as a power source, the pneumatic high-pressure differential regulating valve will be unable to open or close.

[0004] A Chinese patent discloses a pneumatic high-pressure differential regulating valve (authorization announcement number CN217898801U). The patented technology is provided with a threaded column and a connecting cylinder. When the external air intake pipe or the air cylinder is damaged, the threaded column is rotated clockwise to drive the limit plate to move up, drive the limit block to contact the limit plate, and continue to rotate the threaded column clockwise, thereby driving the limit plate to pull the valve stem to move up, and then the valve core can be separated from the valve slot to open the valve. When the valve needs to be closed, the threaded column is rotated counterclockwise to make the limit plate contact the support plate, and the threaded column is continued to be rotated counterclockwise to drive the valve core to contact the valve slot, thereby closing the valve. In this way, the valve can be manually closed and opened when the air intake pipe and the air cylinder are damaged;

[0005] However, it has certain disadvantages: after the valve is manually adjusted, the fluid impacting the valve body will cause the valve body to vibrate, and the vibration will be transmitted to the threaded column causing it to vibrate. Over time, the threaded column will rotate, resulting in unnecessary changes in the opening and closing state of the adjusted valve body channel. Utility Model Content

[0006] The purpose of the utility model is to provide a pneumatic high-pressure valve to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A pneumatic high-pressure valve comprises a valve body, a valve seat is installed at the upper end of the valve body, an air pipe joint is penetrated and connected to the front surface of the valve seat, an opening and closing mechanism is jointly arranged inside the valve body and the valve seat, a connecting pipe is penetrated and rotatably connected to the upper surface of the valve seat, a threaded rod is connected to the internal thread of the connecting pipe, a connecting block is installed at the lower end of the threaded rod, connecting rods are movably penetrated and connected to the left and right ends of the connecting block, a face gear is installed on the outside of the connecting pipe above the valve seat, and a positioning mechanism is arranged on the upper surface of the valve seat on the right side of the connecting pipe.

[0009] As a further solution of the utility model: the opening and closing mechanism includes a valve plate, a valve stem is installed on the lower surface of the valve plate, a valve flap is installed on the lower end of the valve stem, and a first spring is installed on the outside of the valve stem.

[0010] As a further solution of the utility model: the positioning mechanism includes a fixed plate, two fixed blocks are symmetrically connected to the upper surface of the fixed plate, a positioning plate is rotatably connected between the two fixed blocks, a second spring is installed at the right end of the lower surface of the positioning plate, and a positioning block is installed at the left end of the lower surface of the positioning plate.

[0011] As a further solution of the utility model: the end portions of the connecting rod are installed on the upper and lower inner surfaces of the valve seat.

[0012] As a further solution of the utility model: the air pipe joint is located above the valve plate, the connecting rod is slidably connected to the valve plate, the valve stem is slidably connected to the upper end of the valve body and the lower surface of the valve seat, the valve flap is located inside the valve body, the upper end of the first spring is connected to the lower surface of the valve plate, and the lower end of the first spring is connected to the inner lower surface of the valve seat.

[0013] As a further solution of the utility model: the fixing plate is installed on the upper surface of the valve seat, and the lower end of the second spring is installed on the upper surface of the fixing plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model drives the threaded rod to descend by rotating the connecting pipe, so that the valve disc descends, so that the passage of the valve body can be opened manually when the air supply mechanism is damaged.

[0016] 2. The utility model is provided with a positioning mechanism, in which the positioning block clamps the face gear to fix the connecting pipe so that it cannot rotate when it is not needed, thereby avoiding accidental contact or vibration of the fluid driving the connecting pipe to rotate, thereby avoiding changes in the state of the valve body channel after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a pneumatic high-pressure valve;

[0018] Figure 2 It is a partial cross-sectional view of a pneumatic high-pressure valve;

[0019] Figure 3 for Figure 1 A magnified view of middle;

[0020] Figure 4 The figure is a schematic diagram of the structure of a positioning mechanism in a pneumatic high-pressure valve.

[0021] In the figure: 1. valve body; 2. valve seat; 3. air pipe joint; 4. opening and closing mechanism; 5. valve plate; 6. valve stem; 7. valve disc; 8. first spring; 9. connecting pipe; 10. threaded rod; 11. connecting block; 12. connecting rod; 13. face gear; 14. positioning mechanism; 15. fixing plate; 16. fixing block; 17. positioning plate; 18. second spring; 19. positioning block. DETAILED DESCRIPTION

[0022] See also Figure 1 and Figure 2 In the embodiment of the utility model, a pneumatic high-pressure valve comprises a valve body 1, a valve seat 2 is installed at the upper end of the valve body 1, a trachea joint 3 is connected through the front surface of the valve seat 2, an opening and closing mechanism 4 is arranged inside the valve body 1 and the valve seat 2, the opening and closing mechanism 4 comprises a valve plate 5, the trachea joint 3 is located above the valve plate 5, a valve stem 6 is installed on the lower surface of the valve plate 5, the valve stem 6 is slidably connected to the upper end of the valve body 1 and the lower surface of the valve seat 2, a valve flap 7 is installed at the lower end of the valve stem 6, the valve flap 7 is located inside the valve body 1, a first spring 8 is installed outside the valve stem 6, the upper end of the first spring 8 is connected to the lower surface of the valve plate 5, and the lower end of the first spring 8 is connected to the inner lower surface of the valve seat 2;

[0023] The air pipe connector 3 can be connected to an external air supply mechanism;

[0024] After the valve seat 2 is ventilated, the valve plate 5 descends, driving the valve flap 7 to descend, thereby opening the passage of the valve body 1; after the valve seat 2 is exhausted, the first spring 8 drives the valve plate 5 to rise, and the valve flap 7 rises to close the passage of the valve body 1.

[0025] exist Figure 2 Middle: The upper surface of the valve seat 2 is rotatably connected with a connecting pipe 9, the internal thread of the connecting pipe 9 is connected with a threaded rod 10, the lower end of the threaded rod 10 is installed with a connecting block 11, the left and right ends of the connecting block 11 are movably connected with connecting rods 12, the ends of the connecting rod 12 are installed on the upper and lower side surfaces of the inner part of the valve seat 2, and the connecting rod 12 is slidably connected to the valve plate 5;

[0026] The diameter of the connecting block 11 is smaller than the valve plate 5, so that the gas can drive the valve plate 5 to descend;

[0027] Rotating the connecting pipe 9 can drive the threaded rod 10 to rise and fall, and the descending of the threaded rod 10 can drive the connecting block 11 to descend, thereby squeezing the valve plate 5 downward. When the air supply mechanism is damaged, the passage of the valve body 1 can be manually opened.

[0028] exist Figure 1 , Figure 3 and Figure 4Middle: A face gear 13 is installed on the outside of the connecting pipe 9 above the valve seat 2, and a positioning mechanism 14 is provided on the upper surface of the valve seat 2 on the right side of the connecting pipe 9. The positioning mechanism 14 includes a fixing plate 15, which is installed on the upper surface of the valve seat 2. Two fixing blocks 16 are symmetrically connected to the upper surface of the fixing plate 15, and a positioning plate 17 is rotatably connected between the two fixing blocks 16. A second spring 18 is installed on the right end of the lower surface of the positioning plate 17, and the lower end of the second spring 18 is installed on the upper surface of the fixing plate 15. A positioning block 19 is installed on the left end of the lower surface of the positioning plate 17;

[0029] The positioning block 19 is located between two adjacent teeth of the face gear 13, so that the connecting pipe 9 does not rotate when it is not necessary to rotate, thereby preventing the connecting pipe 9 from vibrating and rotating due to accidental contact or vibration;

[0030] The positioning block 19 and the second spring 18 are respectively located on the left and right sides of the fixing block 16 .

[0031] The working principle of the utility model is: when in use, the air supply mechanism supplies air to the valve seat 2 through the pipeline connected to the air pipe joint 3, the air pressure impacts the valve plate 5, and the valve plate 5 drives the valve flap 7 to descend through the valve stem 6, thereby opening the channel of the valve body 1; when closing the valve, the air supply mechanism exhausts the valve seat 2, and under the action of the first spring 8, the valve flap 7 rises to close the channel of the valve body 1; when the air supply mechanism is damaged, the staff can press the right end of the positioning plate 17 to drive the positioning block 19 away from the face gear 13, and then rotate the connecting pipe 9, the threaded rod 10 will drive the connecting block 11 to descend, thereby squeezing the valve plate 5 downward, and then driving the valve flap 7 to descend to open the channel of the valve body 1, finally, release the positioning plate 17, and the positioning block 19 will jam the face gear 13.

[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A pneumatic high-pressure valve, comprising a valve body (1), a valve seat (2) being mounted on the upper end of the valve body (1), a trachea joint (3) being connected through the front surface of the valve seat (2), an opening and closing mechanism (4) being arranged inside the valve body (1) and the valve seat (2), characterized in that: A connecting pipe (9) is rotatably connected to the upper surface of the valve seat (2), the internal thread of the connecting pipe (9) is connected to a threaded rod (10), a connecting block (11) is installed at the lower end of the threaded rod (10), and the left and right ends of the connecting block (11) are movably connected to connecting rods (12), a face gear (13) is installed on the outside of the connecting pipe (9) above the valve seat (2), and a positioning mechanism (14) is provided on the upper surface of the valve seat (2) on the right side of the connecting pipe (9).

2. A pneumatic high pressure valve according to claim 1, characterized in that: The opening and closing mechanism (4) comprises a valve plate (5), a valve stem (6) is mounted on the lower surface of the valve plate (5), a valve flap (7) is mounted on the lower end of the valve stem (6), and a first spring (8) is mounted on the outside of the valve stem (6).

3. A pneumatic high pressure valve according to claim 1, characterized in that: The positioning mechanism (14) comprises a fixing plate (15), the upper surface of the fixing plate (15) is symmetrically connected to two fixing blocks (16), a positioning plate (17) is rotatably connected between the two fixing blocks (16), a second spring (18) is installed at the right end of the lower surface of the positioning plate (17), and a positioning block (19) is installed at the left end of the lower surface of the positioning plate (17).

4. A pneumatic high pressure valve according to claim 1, characterized in that: The ends of the connecting rod (12) are mounted on the upper and lower inner surfaces of the valve seat (2).

5. A pneumatic high pressure valve according to claim 2, characterized in that: The air pipe joint (3) is located above the valve plate (5), the connecting rod (12) is slidably connected to the valve plate (5), the valve stem (6) is slidably connected to the upper end of the valve body (1) and the lower surface of the valve seat (2), the valve flap (7) is located inside the valve body (1), the upper end of the first spring (8) is connected to the lower surface of the valve plate (5), and the lower end of the first spring (8) is connected to the inner lower surface of the valve seat (2).

6. A pneumatic high pressure valve according to claim 3, characterized in that: The fixing plate (15) is mounted on the upper surface of the valve seat (2), and the lower end of the second spring (18) is mounted on the upper surface of the fixing plate (15).

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