Anti-theft soft sealing gate valve

Abstract

The utility model discloses an anti-theft soft sealing gate valve, which relates to the field of gate valves and comprises a valve body and a key body, a valve cover is mounted on the valve body, a valve plate is movably mounted in the valve body, a valve rod is arranged in the valve body in a penetrating manner and penetrates out of the top of the valve cover, a valve rod nut is arranged at the bottom of the valve rod, and the valve plate is connected with the valve rod nut in a matched manner. The valve plate is driven to open or close the gate valve; a lock sleeve is mounted at the top of the valve cover and provided with an inner hole, a lock cover is in threaded connection with the opening of the inner hole, a lock groove is formed in the inner wall of the lock cover, the top of the valve rod extends into the inner hole of the lock sleeve, and a key groove in the valve rod is shielded by the lock cover; an outer boss is arranged at the position, corresponding to the lock groove, of the outer wall of the lower portion of the key body and used for being embedded and matched with the lock groove to open the lock cover, a blind hole is formed in the lower portion of the key body, and an inner boss is arranged on the inner wall of the blind hole and used for being matched with the key groove to open or close the gate valve. The gate valve can be opened and closed only by using the key body, and the key body is integrated with a structure for opening the lock cover and the valve rod, so that other tools are not needed.

Description

Technical Field

[0001] This utility model relates to the field of gate valves, specifically to an anti-theft soft-seal gate valve. Background Technology

[0002] Gate valves are an indispensable component of water supply pipelines, used to cut off and regulate the flow of water in the pipeline. Because the top of the valve stem is usually exposed during installation, some users illegally steal water, resulting in the loss and waste of water resources. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an anti-theft soft-seal gate valve that can only be opened and closed with a key body. The key body integrates the structure of opening the lock cover and the valve stem, eliminating the need for other tools.

[0004] The purpose of this utility model is achieved through the following technical solution: This anti-theft soft-seal gate valve includes a valve body and a key body. A valve cover is detachably installed on the valve body. A valve plate is movably installed in the valve body. A valve stem passes through the valve body and extends out from the top of the valve cover. A valve stem nut is provided at the bottom of the valve stem. The valve plate is connected to the valve stem nut. When the valve stem rotates, it drives the valve plate to open or close the gate valve.

[0005] The valve cover is detachably fitted with a locking sleeve. The locking sleeve has an inner hole, and a locking cover is threaded to the opening of the inner hole. At least one locking groove is opened on the inner wall of the locking cover. The top of the valve stem extends into the inner hole of the locking sleeve, and the keyway on the valve stem is blocked by the locking cover.

[0006] An outer protrusion is provided on the lower outer wall of the key body at a position corresponding to the lock groove, for embedding into the lock groove to open the lock cover. A blind hole is provided at the lower part of the key body, and an inner protrusion is provided on the inner wall of the blind hole for engaging with the keyway, so that the key body and the valve stem are connected by a key to drive the valve, thereby opening or closing the gate valve.

[0007] As a further technical solution, the valve body and valve cover are connected by fixing screws, and a valve cover gasket is also provided between the valve body and valve cover for sealing.

[0008] As a further technical solution, the top of the valve cover is fixed to the locking sleeve by screws.

[0009] As a further technical solution, a bearing is fitted on the top of the valve stem. The bearing is installed between the valve cover and the locking sleeve. A dustproof ring is installed on the top of the bearing. Sealing rings are installed between the outer wall of the bearing and the valve cover, and between the inner wall of the bearing and the valve stem.

[0010] As a further technical solution, a sealing ring is installed between the lock sleeve and the lock cover.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. The gate valve must be opened using a key body. The key body is equipped with an inner boss and an outer boss, which can open the lock cover and valve stem without the need for other tools. This results in higher integration and more efficient opening.

[0013] 2. A lock cover is installed on the top of the valve stem, and a sealing ring is set between the lock sleeve and the lock cover. This can prevent rainwater from entering the gate valve during daily use, extend the service life of the gate valve, and improve its reliability.

[0014] 3. A bearing is installed on the valve stem, and a dustproof ring is installed on the bearing. A sealing ring is also installed between the bearing and the valve stem and valve cover to further improve the sealing and dustproof performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model during opening and closing operations.

[0016] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle.

[0017] Figure 3 This is a schematic diagram of the key body in this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Valve cover; 3. Valve stem; 4. Valve plate; 5. Lock sleeve; 6. Lock cover; 7. Lock groove; 8. Sealing ring; 9. Key body; 10. Screw; 11. Inner boss; 12. Outer boss; 13. Fixing screw; 14. Valve cover washer; 15. Valve stem nut; 16. Blind hole; 17. Inner hole; 18. Keyway; 19. Dustproof ring; 20. Bearing. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings:

[0020] Example: As attached Figures 1-3 As shown, this anti-theft soft-seal gate valve includes a valve body 1, a valve cover 2, a valve stem 3, a valve plate 4, a lock sleeve 5, a lock cover 6, a lock groove 7, a sealing ring 8, a key body 9, a screw 10, an inner boss 11, an outer boss 12, a fixing screw 13, a valve cover washer 14, a valve stem nut 15, a blind hole 16, an inner hole 17, a keyway 18, a dustproof ring 19, and a bearing 20.

[0021] Reference Appendix Figure 1 The valve cover 2 can be detachably installed on the valve body 1 using fixing screws 13. Preferably, multiple valve cover gaskets 14 are also provided between the valve body 1 and the valve cover 2 for sealing. The valve plate 4 is movably installed inside the valve body 1. The valve stem 3 passes through the valve body 1 and protrudes from the top of the valve cover 2. A valve stem nut 15 is provided at the bottom of the valve stem 3. The valve plate 4 is connected to the valve stem nut 15, so that when the valve stem 3 rotates, it synchronously drives the valve plate 4, generating axial displacement, thereby opening or closing the gate valve.

[0022] Furthermore, such as Figure 1 , 2 As shown, a locking sleeve 5 is detachably installed on the top of the valve cover 2 by screws 10. The upper part of the locking sleeve 5 is provided with an inner hole 17. A locking cover 6 is threadedly connected to the opening of the inner hole 17. Two locking grooves 7 are opened on the inner wall of the locking cover 6. At the same time, the top of the valve stem 3 extends into the inner hole 17 of the locking sleeve 5. When the locking cover 6 is not opened, the keyway 18 provided on the valve stem 3 is blocked by the locking cover 6. That is, the locking cover 6 must be opened first before the valve stem 3 can be rotated.

[0023] Preferably, a sealing ring 8 is installed between the locking sleeve 5 and the locking cover 6 to prevent rainwater from entering the gate valve during daily use, thereby extending the service life of the gate valve and improving its reliability. A bearing 20 is fitted on the top of the valve stem 3, and the bearing 20 is installed between the valve cover 2 (top) and the locking sleeve 5 (bottom). A dustproof ring 19 is installed on the top of the bearing 20. Sealing rings 8 are installed between the outer wall of the bearing 20 and the valve cover 2, and between the inner wall of the bearing 20 and the valve stem 3, to further improve the sealing and dustproof performance.

[0024] Reference Appendix Figure 3 Two external protrusions 12 (matching the number of lock slots 7) are provided on the outer wall of the lower part of the key body 9 at positions corresponding to the lock slots 7. The external protrusions 12 can be embedded into the corresponding lock slots 7 to achieve torque transmission, thereby opening the lock cover 6. In addition, a blind hole 16 is opened at the lower part of the key body 9. The inner wall of the blind hole 16 is provided with an inner protrusion 11, which is used to cooperate with the keyway 18. The number of inner protrusions 11 is equal to the number of keyways 18 at the top of the valve stem 3, so that the key body 9 and the valve stem 3 are connected by a key to transmit torque, thereby opening or closing the gate valve.

[0025] The working process of this utility model:

[0026] During normal operation of the gate valve, the lock cover 6 is installed on the lock sleeve 5. In daily use, this prevents rainwater from entering the gate valve, extending its service life and improving reliability. To open or close the gate valve, first align the outer protrusion 12 at the bottom of the key body 9 with the lock groove 7 on the lock cover 6. Then, turn the handle to unscrew the lock cover 6 from the lock sleeve 5, revealing the valve stem 3 and keyway 18. Next, insert the key body 9 into the inner hole 17 of the lock sleeve 5, aligning the inner protrusion 11 with the keyway 18 of the valve stem 3. Turn the handle again to rotate the valve stem 3, simultaneously rotating the valve plate 4 and causing axial displacement, thereby opening or closing the gate valve.

[0027] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A theft-proof soft-seal gate valve, characterized in that: Includes valve body (1) and key body (9). Valve cover (2) is detachably installed on valve body (1). Valve plate (4) is movably installed inside valve body (1). Valve stem (3) passes through valve body (1) and protrudes from the top of valve cover (2). Valve stem nut (15) is provided at the bottom of valve stem (3). Valve plate (4) is connected to valve stem nut (15). When valve stem (3) rotates, it drives valve plate (4) to open or close the gate valve. The valve cover (2) is detachably mounted with a lock sleeve (5). The lock sleeve (5) has an inner hole (17). A lock cover (6) is threadedly connected to the opening of the inner hole (17). At least one lock groove (7) is opened on the inner wall of the lock cover (6). The top of the valve stem (3) extends into the inner hole (17) of the lock sleeve (5), and the keyway (18) on the valve stem (3) is blocked by the lock cover (6). An outer boss (12) is provided on the lower outer wall of the key body (9) at a position corresponding to the lock groove (7) for embedding into the lock groove (7) to open the lock cover (6). A blind hole (16) is provided at the lower part of the key body (9), and an inner boss (11) is provided on the inner wall of the blind hole (16) for engaging with the keyway (18) so that the key body (9) and the valve stem (3) are connected by a key to drive the valve, thereby opening or closing the gate valve.

2. The anti-theft soft-seal gate valve according to claim 1, characterized in that: The valve body (1) and the valve cover (2) are connected by fixing screws (13), and a valve cover gasket (14) is provided between the valve body (1) and the valve cover (2) for sealing.

3. The anti-theft soft-seal gate valve according to claim 1, characterized in that: The top of the valve cover (2) is fixed to the locking sleeve (5) by screws (10).

4. The anti-theft soft-seal gate valve according to claim 1, characterized in that: A bearing (20) is fitted on the top of the valve stem (3). The bearing (20) is installed between the valve cover (2) and the lock sleeve (5). A dustproof ring (19) is installed on the top of the bearing (20). Sealing rings (8) are installed between the outer wall of the bearing (20) and the valve cover (2), and between the inner wall of the bearing (20) and the valve stem (3).

5. The anti-theft soft-seal gate valve according to claim 1, characterized in that: A sealing ring (8) is installed between the lock sleeve (5) and the lock cover (6).

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