Vacuum system connecting valve

Abstract

The utility model provides a vacuum system connecting valve which comprises a valve body, a shell is arranged in the valve body, a feeding hole is formed in the surface of the shell, a connecting sleeve is arranged at one end of the shell, and a discharging hole is formed in the surface of the connecting sleeve. Compared with the prior art, the feeding device has the advantages that after materials enter the connecting sleeve, the transmission frame is pushed to slide along the inner wall of the connecting sleeve and extrude the first reset spring, then the blocking block is driven to slide along the inner wall of the trapezoidal discharging hole, and in the process, the guide rod slides upwards along the transmission frame and extrudes the second reset spring; the material can flow out of the discharging hole at the moment, the transmission frame can reset under the action of the first reset spring after the valve stops running, the blocking block can be inserted back into the discharging hole under the action of the second reset spring, and the discharging hole can be automatically dredged through the sharp bottom end of the blocking block while the discharging hole is blocked by the blocking block; therefore, the probability that the discharge hole is blocked by materials is reduced.

Description

Technical Field

[0001] This utility model is a vacuum system connection valve, belonging to the field of valves. Background Technology

[0002] Vacuum system connection valves are pipe connection and control components specifically designed for vacuum environments, and they play a crucial role in high vacuum or ultra-high vacuum systems.

[0003] In existing technology, some valves have anti-backflow devices installed in the valve body to prevent material backflow after the valve is closed in a vacuum system. The main working process is as follows: when material enters the sleeve of the anti-backflow device, the material pushes the piston to slide along the inner wall of the sleeve and squeezes the spring. At this time, the piston will be misaligned with the through hole, and the material can flow out from the through hole. When the valve stops running, the piston will return to its original position under the action of the spring and block the through hole, thus preventing material from flowing back into the valve through the through hole and ensuring the normal use of the valve. However, as the usage time increases, the material remaining in the through hole can easily block the through hole. Since the anti-backflow device is fixed in the valve, it is difficult to unclog the through hole, thus affecting the normal use of the anti-backflow device. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a vacuum system connection valve to solve the problem mentioned in the background art: as the valve is used for a long time, material residue in the through hole easily clogs the through hole, and because the anti-backflow device is fixed inside the valve, it is difficult to unclog the through hole, thus affecting the normal use of the anti-backflow device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum system connection valve, comprising a valve body, a housing within the valve body, a feed hole on the surface of the housing, a connecting sleeve at one end of the housing, a discharge hole on the surface of the connecting sleeve, a transmission frame slidably connected to the inner wall of the connecting sleeve, a first return spring sleeved on the surface of the transmission frame between the connecting sleeve and the transmission frame, a guide rod slidably connected inside the transmission frame, a block fixedly connected to the bottom end of the guide rod, and a second return spring sleeved on the surface of the guide rod between the transmission frame and the block.

[0006] Furthermore, the discharge hole is trapezoidal, and the block is triangular.

[0007] Furthermore, a connecting cover is provided at the other end of the housing, and a threaded rod is internally threaded onto the connecting cover. A turntable is fixedly connected to one end of the threaded rod, and an adjusting block is fixedly connected to the other end of the threaded rod.

[0008] Furthermore, both the valve body and the housing surface are provided with several insertion holes, and mounting bolts are inserted into the insertion holes, with mounting nuts threaded onto the surface of the mounting bolts.

[0009] Furthermore, the housing, the connecting sleeve, and the connecting cover are all provided with locking holes on one side, and locking bolts are threaded into the locking holes.

[0010] Furthermore, a first sealing gasket is provided between the housing and the valve body, a second sealing gasket is provided between the connecting sleeve and the housing, and a third sealing gasket is provided between the connecting cover and the housing.

[0011] Furthermore, the valve body is T-shaped, and the length of the valve body is greater than the sum of the lengths of the housing and the connecting sleeve.

[0012] The beneficial effects of this utility model are as follows: After the material enters the connecting sleeve, it will push the transmission frame to slide along the inner wall of the connecting sleeve and squeeze the first return spring, thereby driving the block to slide along the inner wall of the trapezoidal discharge hole. During this process, the guide rod will slide up along the transmission frame and squeeze the second return spring, and the material can then flow out from the discharge hole. After the valve stops running, the transmission frame will reset under the action of the first return spring, and the block will be inserted back into the discharge hole under the action of the second return spring. This means that while the block blocks the discharge hole, its sharp bottom end will automatically clear the discharge hole, thereby reducing the probability of the discharge hole being blocked by material.

[0013] Rotating the turntable causes the threaded rod to rotate, which in turn causes the adjusting block to slide along the inner wall of the housing, thereby adjusting the range of obstruction of the feed hole by the adjusting block and thus controlling the valve flow rate.

[0014] The housing and valve body are connected by insertion holes, mounting bolts and mounting nuts. Since the connecting sleeve and housing, and the connecting cover and housing are connected by locking holes and locking bolts, the valve body, housing, connecting sleeve and connecting cover are independent of each other, which facilitates the maintenance of the above components. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a vacuum system connection valve according to the present invention;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of a vacuum system connection valve according to the present invention;

[0018] Figure 3This is a schematic diagram of the housing mounting structure of a vacuum system connecting valve according to the present invention;

[0019] Figure 4 This is a schematic diagram of the installation structure of the connecting sleeve and connecting cover for a vacuum system connecting valve according to the present invention.

[0020] In the diagram: 1. Valve body; 2. Housing; 3. Inlet port; 4. Connecting sleeve; 5. Outlet port; 6. Transmission frame; 7. First return spring; 8. Guide rod; 9. Block; 10. Second return spring; 11. Connecting cover; 12. Threaded rod; 13. Turntable; 14. Adjusting block; 15. Insertion hole; 16. Mounting bolt; 17. Mounting nut; 18. Locking hole; 19. Locking bolt; 20. First sealing gasket; 21. Second sealing gasket; 22. Third sealing gasket. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 2 This utility model provides a technical solution: a vacuum system connection valve, including a valve body 1, a housing 2 inside the valve body 1, a feed hole 3 on the surface of the housing 2, a connecting sleeve 4 at one end of the housing 2, a discharge hole 5 on the surface of the connecting sleeve 4, a transmission frame 6 slidably connected to the inner wall of the connecting sleeve 4, a first return spring 7 sleeved on the surface of the transmission frame 6 between the connecting sleeve 4 and the transmission frame 6, a guide rod 8 slidably connected inside the transmission frame 6, a block 9 fixedly connected to the bottom end of the guide rod 8, and a second return spring 10 sleeved on the surface of the guide rod 8 between the transmission frame 6 and the block 9.

[0023] After the material enters the connecting sleeve 4, it will push the transmission frame 6 to slide along the inner wall of the connecting sleeve 4 and squeeze the first return spring 7, thereby driving the block 9 to slide along the inner wall of the trapezoidal discharge hole 5. During this process, the guide rod 8 will slide up along the transmission frame 6 and squeeze the second return spring 10. At this time, the material can flow out from the discharge hole 5. After the valve stops running, the transmission frame 6 will be reset under the action of the first return spring 7, and the block 9 will be inserted back into the discharge hole 5 under the action of the second return spring 10. Thus, while the block 9 blocks the discharge hole 5, its sharp bottom end will automatically clear the discharge hole 5, thereby reducing the probability of the discharge hole 5 being blocked by material.

[0024] Furthermore, the valve body 1 is T-shaped, and its length is greater than the sum of the lengths of the housing 2 and the connecting sleeve 4. The T-shape of the valve body 1 ensures that it can be connected to both the pipe and the housing 2, and the length of the valve body 1 being greater than the sum of the lengths of the housing 2 and the connecting sleeve 4 ensures that the material has sufficient space to flow between the housing 2 and the valve body 1 after being inserted into the valve body 1.

[0025] Preferably, the discharge hole 5 is trapezoidal and the block 9 is triangular. This arrangement not only ensures that the block 9 can slide along the inner wall of the discharge hole 5, but also ensures that the block 9 can clear the discharge hole 5 through its bottom end after being inserted back into the discharge hole 5.

[0026] Please see Figure 2 This utility model provides a technical solution: a connecting cover 11 is provided at the other end of the housing 2, and a threaded rod 12 is internally threaded to the connecting cover 11. A turntable 13 is fixedly connected to one end of the threaded rod 12, and an adjusting block 14 is fixedly connected to the other end of the threaded rod 12. Rotating the turntable 13 causes the threaded rod 12 to rotate, which in turn causes the adjusting block 14 to slide along the inner wall of the housing 2, thereby adjusting the obstruction range of the adjusting block 14 on the feed hole 3, thus achieving the effect of controlling the valve flow.

[0027] Please see Figures 3 to 4 This utility model provides a technical solution: both the valve body 1 and the housing 2 have several insertion holes 15 on their surfaces, and mounting bolts 16 are inserted into the insertion holes 15. Mounting nuts 17 are threaded onto the surface of the mounting bolts 16. The housing 2 and the valve body 1 are connected through the insertion holes 15, mounting bolts 16, and mounting nuts 17, making the valve body 1 and the housing 2 independent of each other, thereby facilitating the maintenance of these components.

[0028] Furthermore, locking holes 18 are provided on one side of the housing 2, the connecting sleeve 4, and the connecting cover 11, and locking bolts 19 are threaded into the locking holes 18. The connecting sleeve 4 is connected to the housing 2, and the connecting cover 11 is connected to the housing 2 through the locking holes 18 and the locking bolts 19, so that the housing 2, the connecting sleeve 4, and the connecting cover 11 are independent of each other, thereby facilitating the maintenance of the above components.

[0029] Furthermore, a first sealing gasket 20 is provided between the housing 2 and the valve body 1, a second sealing gasket 21 is provided between the connecting sleeve 4 and the housing 2, and a third sealing gasket 22 is provided between the connecting cover 11 and the housing 2. The first sealing gasket 20 can improve the sealing performance between the housing 2 and the valve body 1, the second sealing gasket 21 can improve the sealing performance between the connecting sleeve 4 and the housing 2, and the third sealing gasket 22 can improve the sealing performance between the connecting cover 11 and the housing 2.

[0030] Detailed Implementation: After entering the valve body 1, the material enters the housing 2 through the feed hole 3 on the surface of the housing 2, and then enters the connecting sleeve 4 connected to one end of the housing 2. When the material enters the connecting sleeve 4, it will squeeze the transmission frame 6, causing it to slide along the inner wall of the connecting sleeve 4 away from the discharge hole 5 on the surface of the connecting sleeve 4 and squeeze the first return spring 7. As the transmission frame 6 moves, it will drive the block 9 to slide along the trapezoidal inner wall of the discharge hole 5. During this process, the block 9 will be fixed in place due to the pressure from the discharge hole 5. The top guide rod 8 slides up along the transmission frame 6 and squeezes the second return spring 10. At this time, the block 9 will no longer block the discharge hole 5, and the material can flow out from the discharge hole 5. After the valve stops running, the transmission frame 6 will reset under the action of the first return spring 7, which will drive the block 9 back to its original position. At this time, the block 9 will be inserted back into the discharge hole 5 under the action of the second return spring 10. This means that while the block 9 blocks the discharge hole 5, its sharp bottom end will automatically clear the discharge hole 5, thereby reducing the probability of the discharge hole 5 being blocked by material.

[0031] Hold and rotate the turntable 13 to make it rotate the threaded rod 12 connected to it, which in turn causes the adjusting block 14 fixed to one end of the threaded rod 12 to slide along the inner wall of the housing 2, thereby adjusting the range of the adjusting block 14 blocking the feed hole 3, thus achieving the effect of controlling the valve flow.

[0032] The housing 2 is connected to the valve body 1 through the insertion hole 15, the mounting bolt 16 and the mounting nut 17. Since the connecting sleeve 4 is connected to the housing 2 and the connecting cover 11 is connected to the housing 2 through the locking hole 18 and the locking bolt 19, the valve body 1, the housing 2, the connecting sleeve 4 and the connecting cover 11 are independent of each other, which facilitates the maintenance of the above components.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum system connection valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a housing (2), the surface of the housing (2) is provided with a feed hole (3), one end of the housing (2) is provided with a connecting sleeve (4), the surface of the connecting sleeve (4) is provided with a discharge hole (5), the inner wall of the connecting sleeve (4) is slidably connected with a transmission frame (6), the surface of the transmission frame (6) is provided with a first return spring (7) between the connecting sleeve (4) and the transmission frame (6), the transmission frame (6) is slidably connected with a guide rod (8), the bottom end of the guide rod (8) is fixedly connected with a block (9), the surface of the guide rod (8) is provided with a second return spring (10) between the transmission frame (6) and the block (9).

2. The vacuum system connection valve according to claim 1, characterized in that: The discharge hole (5) is trapezoidal, and the block (9) is triangular.

3. A vacuum system connection valve according to claim 1, characterized in that: The other end of the housing (2) is provided with a connecting cover (11), and a threaded rod (12) is threadedly connected to the connecting cover (11). One end of the threaded rod (12) is fixedly connected to a turntable (13), and the other end of the threaded rod (12) is fixedly connected to an adjusting block (14).

4. A vacuum system connection valve according to claim 1, characterized in that: The valve body (1) and the housing (2) are provided with several insertion holes (15), and mounting bolts (16) are inserted into the insertion holes (15). The mounting bolts (16) are threaded with mounting nuts (17).

5. A vacuum system connection valve according to claim 3, characterized in that: The housing (2), the connecting sleeve (4) and the connecting cover (11) are all provided with locking holes (18) on one side, and locking bolts (19) are threaded into the locking holes (18).

6. A vacuum system connection valve according to claim 3, characterized in that: A first sealing gasket (20) is provided between the housing (2) and the valve body (1), a second sealing gasket (21) is provided between the connecting sleeve (4) and the housing (2), and a third sealing gasket (22) is provided between the connecting cover (11) and the housing (2).

7. A vacuum system connection valve according to claim 1, characterized in that: The valve body (1) is T-shaped, and the length of the valve body (1) is greater than the sum of the lengths of the housing (2) and the connecting sleeve (4).

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