Flange type high-flow stop valve

Abstract

The utility model relates to the field of stop valves, in particular to a flange type high-flow stop valve which comprises a high-flow stop valve body, a main body for bearing medium circulation, a circulation block and a torsion spring arranged in the high-flow stop valve body and used for assisting medium circulation. The flange type large-flow stop valve is provided with the valve clack, the threaded rod, the butt-joint block, the cross groove, the anti-theft ring and the cross block, when the flange type large-flow stop valve is used, the anti-theft ring connected with the hand wheel can be directly arranged on the butt-joint block at the top of the threaded rod in a sleeving mode, the cross block is matched with the cross groove, and therefore the threaded rod can be twisted through the hand wheel, and the anti-theft effect is achieved. According to the flange type large-flow stop valve, the valve clack is driven to move in the large-flow stop valve body, so that the size of a medium flowing out of the valve body is controlled, the hand wheel can be directly taken away when the valve is not used and closed, external personnel cannot twist the threaded rod only through the butt joint block, and therefore external operation safety of the flange type large-flow stop valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of globe valves, and particularly relates to a flange-type large-flow globe valve. Background Art

[0002] A globe valve, also known as a stop valve, is a forced-sealing valve. When the valve is closed, pressure must be applied to the valve flap to ensure that the sealing surface does not leak. A large-flow globe valve is a valve specifically designed to handle high-flow fluids. Its main function is to control the flow of fluids in a pipeline system, ensuring that the fluid can be cut off when the flow rate reaches a preset value to protect the safe and stable operation of the pipeline system. The flange-type large-flow globe valve is also one of the large-flow globe valves. The flange-type large-flow globe valve uses flange connection as the interface method, and controls the sealing surface between the valve flap and the valve seat by the up and down movement of the valve stem to realize the opening, closing and regulating functions of the fluid.

[0003] After retrieval, a large-flow through-type globe valve with the publication number of CN215059673U specifically discloses a large-flow through-type globe valve, which includes a valve body, a valve stem, a valve core and a mounting seat. The mounting seat is arranged on the valve body. A sleeve is arranged on the mounting seat. Locking bolts are arranged on the outer periphery of the sleeve. A limiting plate is arranged at the top of the sleeve. The valve stem extends out of the sleeve. A handwheel is arranged at the top of the valve stem. The limiting plate limits the locking bolts. The handwheel is fixedly installed with the valve stem. Rotating the handwheel drives the valve stem to rotate, and then drives the valve core inside the valve body to rotate. The valve core is arranged inside the valve body. A through groove for the fluid to flow through is arranged in the middle of the valve core. An annular limiter is arranged on the inner wall of the valve body. A sealing ring is arranged on the limiter. An installation groove is arranged inside the valve body. In the utility model, the force on the valve core is relatively uniform during the rotation process, the service life of the sealing ring is long, and only the sliding friction force needs to be overcome during the rotation process, so it is relatively labor-saving to open and close.

[0004] During the use of the existing flange-type large-flow globe valve, due to the different working environments and ranges of the flange-type large-flow globe valve, directly turning the handwheel can control the opening and closing of the flange-type large-flow globe valve, which lacks safety. If a non-operator opens the medium pipeline that originally needs to be closed, it will cause certain losses. Moreover, the flange-type large-flow globe valve in the above comparative case also lacks safety control means. In the long term, whether it is used outdoors or for flow control, the flange-type large-flow globe valve has certain potential safety hazards.

[0005] Therefore, it is very necessary to invent a flange-type large-flow globe valve to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a flange-type large-flow stop valve. When not in use and closed, the handwheel can be directly removed through the valve flap, threaded rod, docking block, cross slot, anti-theft ring and cross block. In this way, external personnel cannot twist the threaded rod only by the docking block, thus ensuring the external operation safety of the flange-type large-flow stop valve. With such a combination, whether used externally or for flow control, separating the handwheel for controlling the flange-type large-flow stop valve greatly improves the safety of use and reduces the loss caused by non-operators opening the medium pipeline that originally needed to be closed, so as to solve the problems in the prior art that during the use of the flange-type large-flow stop valve, due to the different working environments and ranges of the flange-type large-flow stop valve, directly twisting the handwheel can control the opening and closing of the flange-type large-flow stop valve, lacking safety. If non-operators open the medium pipeline that originally needed to be closed, it will cause certain losses, and the flange-type large-flow stop valve in the above comparative case also lacks safety control means. In the long term, whether used externally or for flow control, there are certain potential problems in the use of the flange-type large-flow stop valve.

[0007] To achieve the above purpose, the present utility model provides the following technical solution: A flange-type large-flow stop valve, including a large-flow stop valve body, which is a main body for carrying the circulation of the medium;

[0008] A flow-through block is arranged inside the large-flow stop valve body to assist the circulation of the medium. A torsion spring is arranged at the bottom of the flow-through block. One end of the torsion spring is fixedly installed with a contact ring, and a contact groove is formed on the surface of the contact ring. A valve flap is arranged on one side of the flow-through block, and a contact block is fixedly installed at the bottom of the valve flap.

[0009] A threaded rod is arranged at the top of the valve flap to control the up and down movement of the valve flap. A lower metal seat is fixedly installed above the large-flow stop valve body. A fastening bolt passes through the upper part of the lower metal seat. One end of the fastening bolt is movably connected with an upper metal seat. A docking block is fixedly installed at the top of the threaded rod, and a cross slot is formed on the surface of the docking block.

[0010] An anti-theft ring is arranged outside the docking block to separate the handwheel from the threaded rod. A cross block is fixedly installed inside the anti-theft ring. An adjusting rod is fixedly installed above the anti-theft ring, and a handwheel is fixedly installed at the top of the adjusting rod.

[0011] Preferably, a valve pipe is fixedly installed outside the large-flow stop valve body, an installation flange is fixedly installed outside the valve pipe, a sealing groove is formed inside the installation flange, and a sealing ring is movably connected inside the sealing groove.

[0012] Preferably, a fixing bolt penetrates the outside of the mounting flange, and one end of the fixing bolt is movably connected to a sealing flange.

[0013] Preferably, the valve flap is movably connected to the large-flow cut-off valve body, and the valve flap is fixedly connected to the threaded rod.

[0014] Preferably, the upper metal seat is threadedly connected to the lower metal seat, and the fastening bolts are distributed in a ring array on the upper metal seat.

[0015] Preferably, the cross block inside the anti-theft ring is engaged with the cross groove provided on the surface of the docking block, and the cross block and the cross groove are used in coordination.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model is provided with a valve disc, a threaded rod, a docking block, a cross groove, an anti-theft ring and a cross block. When the flange-type large-flow stop valve is used, the anti-theft ring connected to the hand wheel can be directly sleeved on the docking block at the top of the threaded rod, so that the cross block fits with the cross groove. In this way, the threaded rod can be twisted by the hand wheel to drive the valve disc to move inside the large-flow stop valve body, thereby controlling the size of the medium flowing out of the valve body. In addition, the hand wheel can be directly removed when the closure is not used. In this way, external personnel cannot twist the threaded rod only by the docking block, thereby ensuring the external operation safety of the flange-type large-flow stop valve. In this way, whether it is used in the outside world or for flow control, the hand wheel controlling the flange-type large-flow stop valve is separated, which greatly improves the safety of use and reduces the loss caused by non-operating personnel opening the medium pipeline that originally needs to be closed;

[0018] 2. The utility model is provided with a mounting flange, a sealing groove, a sealing ring, a fixing bolt, a sealing flange, a circulation block, a torsion spring, a resistance ring and a resistance groove. When the flange-type large-flow stop valve is connected to an external pipeline, the sealing groove and the sealing ring in the mounting flange can be used to enhance the sealing performance of the flange connection, thereby reducing the probability of leakage during medium circulation. At the same time, when the valve disc is between the circulation blocks to close the flange-type large-flow stop valve, the resistance ring will be driven by the torsion spring to resist the bottom of the valve disc, so that the resistance block at the bottom of the valve disc fits with the resistance groove, thereby enhancing the valve disc's sealing ability to the inside of the flange-type large-flow stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the mounting flange structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the friction circle of the utility model;

[0023] Figure 4 This is a schematic diagram of the threaded rod structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the anti-theft ring of the utility model.

[0025] Description of reference numerals:

[0026] 1. Large flow stop valve body; 2. Valve pipe; 3. Mounting flange; 4. Sealing groove; 5. Sealing ring; 6. Fixing bolt; 7. Sealing flange; 8. Flow block; 9. Torsion spring; 10. Resistance ring; 11. Resistance groove; 12. Valve disc; 13. Resistance block; 14. Threaded rod; 15. Lower metal seat; 16. Fastening bolt; 17. Upper metal seat; 18. Docking block; 19. Cross groove; 20. Anti-theft ring; 21. Cross block; 22. Adjustment rod; 23. Handwheel. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figures 1-5 A flange type large flow cut-off valve shown includes a large flow cut-off valve body 1, which is a main body for carrying the flow of medium;

[0029] A circulation block 8 is arranged inside the large flow cut-off valve body 1 to assist the medium circulation, and a torsion spring 9 is arranged at the bottom of the circulation block 8, a resistance ring 10 is fixedly installed at one end of the torsion spring 9, and a resistance groove 11 is opened on the surface of the resistance ring 10, a valve disc 12 is arranged on one side of the circulation block 8, and a resistance block 13 is fixedly installed at the bottom of the valve disc 12;

[0030] The threaded rod 14 is arranged on the top of the valve disc 12, and is used to control the valve disc 12 to move up and down. A lower metal seat 15 is fixedly installed on the top of the large flow cut-off valve body 1, and a fastening bolt 16 is passed through the top of the lower metal seat 15. One end of the fastening bolt 16 is movably connected to an upper metal seat 17. A docking block 18 is fixedly installed on the top of the threaded rod 14, and a cross groove 19 is opened on the surface of the docking block 18.

[0031] The anti-theft ring 20 is arranged on the outside of the docking block 18, and is used to separate the handwheel 23 from the threaded rod 14. A cross block 21 is fixedly installed inside the anti-theft ring 20, and an adjusting rod 22 is fixedly installed above the anti-theft ring 20. A handwheel 23 is fixedly installed on the top of the adjusting rod 22. The handwheel 23 can be directly removed when the closure is not in use. In this way, outsiders cannot twist the threaded rod 14 only by relying on the docking block 18, thereby ensuring the external operation safety of the flange-type large-flow stop valve.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a valve pipe 2 is fixedly installed on the outside of the large-flow stop valve body 1, and a mounting flange 3 is fixedly installed on the outside of the valve pipe 2. A sealing groove 4 is opened inside the mounting flange 3, and a sealing ring 5 is movably connected inside the sealing groove 4. The sealing performance of the flange connection can be enhanced by the sealing groove 4 and the sealing ring 5 in the mounting flange 3 to reduce the probability of leakage during medium circulation. A fixing bolt 6 is passed through the outside of the mounting flange 3, and a sealing flange 7 is movably connected at one end of the fixing bolt 6. The sealing flange 7 is easy to operate and install, and it is convenient for maintenance personnel to replace it in time if a fault occurs. The valve disc 12 is movably connected to the large-flow stop valve body 1, and the valve disc 12 is fixedly connected to the threaded rod 14. When the valve disc 12 is between the circulation blocks 8 to close the flange-type large-flow stop valve, the resistance ring 10 will resist the bottom of the valve disc 12 under the drive of the torsion spring 9, so that the resistance block 13 at the bottom of the valve disc 12 fits with the resistance groove 11, thereby enhancing the sealing ability of the valve disc 12 to the inside of the flange-type large-flow stop valve.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, the upper metal seat 17 is threadedly connected to the lower metal seat 15, and the fastening bolts 16 are distributed in a ring array on the upper metal seat 17. The upper metal seat 17 and the lower metal seat 15 can be disassembled when the flange-type large-flow stop valve is not in use, and the interior of the large-flow stop valve body 1 is cleaned. The cross block 21 inside the anti-theft ring 20 is engaged with the cross groove 19 opened on the surface of the docking block 18. The cross block 21 and the cross groove 19 are used in conjunction with each other, and the anti-theft ring 20 connected to the hand wheel 23 can be directly sleeved on the docking block 18 at the top of the threaded rod 14, so that the cross block 21 and the cross groove 19 fit together, so that the threaded rod 14 can be twisted by the hand wheel 23 to drive the valve disc 12 to move inside the large-flow stop valve body 1, thereby controlling the size of the medium flowing out of the valve body.

[0034] The working principle of the utility model is as follows: firstly, the flange-type large-flow stop valve is taken out from the pipeline where the medium needs to flow, and the flange-type large-flow stop valve is connected to the external medium flow pipeline through the mounting flange 3, the sealing groove 4, the sealing ring 5, the fixing bolts 6 and the sealing flange 7. The sealing groove 4 and the sealing ring 5 in the mounting flange 3 can strengthen the sealing performance of the flange connection and reduce the probability of leakage when the medium flows. Then, the anti-theft ring 20 connected to the handwheel 23 can be directly sleeved on the docking block 18 at the top of the threaded rod 14, so that the cross block 21 fits with the cross groove 19. In this way, the threaded rod 14 can be twisted by the handwheel 23 to drive the valve disc 12 to move inside the large-flow stop valve body 1, thereby controlling the size of the medium flowing out of the valve body. Then, when the valve disc 12 moves to the upper space of the large-flow stop valve body 1, a gap leaks out between the two flow blocks 8, allowing the medium to flow. Conversely, when the handwheel 23 is twisted downward, the valve disc 12 is driven to move inside the large-flow stop valve body 1. When the valve disc 12 is moved, as the valve disc 12 is pressed downward, the resistance ring 10 will resist the bottom of the valve disc 12 driven by the torsion spring 9, so that the resistance block 13 at the bottom of the valve disc 12 fits with the resistance groove 11, thereby strengthening the sealing ability of the valve disc 12 to the inside of the flange type large flow stop valve. Then, when the flange type large flow stop valve is closed and not in use, the hand wheel 23 can be directly removed, so that outsiders cannot twist the threaded rod 14 only by the docking block 18, thereby ensuring the external operation safety of the flange type large flow stop valve. In this way, whether it is used in the outside world or for flow control, the hand wheel 23 controlling the flange type large flow stop valve is separated, which greatly improves the safety of use. Finally, after completing the installation and use of all flange type large flow stop valves according to the above operations, the device can be maintained daily, and the use process of the flange type large flow stop valve is completed.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flange type large flow stop valve, characterized by: include A large flow stop valve body (1), used as a main body for carrying the flow of medium; A circulation block (8) is arranged inside the large flow cut-off valve body (1) and is used to assist the circulation of the medium. A torsion spring (9) is arranged at the bottom of the circulation block (8). A resistance ring (10) is fixedly mounted on one end of the torsion spring (9). A resistance groove (11) is formed on the surface of the resistance ring (10). A valve flap (12) is arranged on one side of the circulation block (8). A resistance block (13) is fixedly mounted on the bottom of the valve flap (12). A threaded rod (14) is arranged on the top of the valve disc (12) and is used to control the valve disc (12) to move up and down. A lower metal seat (15) is fixedly installed on the top of the large flow cut-off valve body (1). A fastening bolt (16) passes through the top of the lower metal seat (15). One end of the fastening bolt (16) is movably connected to the upper metal seat (17). A docking block (18) is fixedly installed on the top of the threaded rod (14). A cross groove (19) is provided on the surface of the docking block (18). The anti-theft ring (20) is arranged outside the docking block (18) and is used to separate the hand wheel (23) from the threaded rod (14), and a cross block (21) is fixedly installed inside the anti-theft ring (20), an adjustment rod (22) is fixedly installed above the anti-theft ring (20), and a hand wheel (23) is fixedly installed on the top of the adjustment rod (22).

2. A flange type large flow stop valve according to claim 1, characterized in that: A valve pipe (2) is fixedly mounted on the outside of the large flow cut-off valve body (1), a mounting flange (3) is fixedly mounted on the outside of the valve pipe (2), a sealing groove (4) is formed inside the mounting flange (3), and a sealing ring (5) is movably connected inside the sealing groove (4).

3. A flange type large flow stop valve according to claim 2, characterized in that: A fixing bolt (6) passes through the outside of the mounting flange (3), and one end of the fixing bolt (6) is movably connected to a sealing flange (7).

4. A flange type large flow stop valve according to claim 1, characterized in that: The valve flap (12) is movably connected to the large flow cut-off valve body (1), and the valve flap (12) is fixedly connected to the threaded rod (14).

5. The flange type large flow stop valve according to claim 1, characterized in that: The upper metal seat (17) is threadedly connected to the lower metal seat (15), and the fastening bolts (16) are distributed in a ring array on the upper metal seat (17).

6. A flange type large flow stop valve according to claim 1, characterized in that: The cross block (21) inside the anti-theft ring (20) is engaged with a cross groove (19) provided on the surface of the docking block (18), and the cross block (21) and the cross groove (19) are used in conjunction with each other.

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