A valve cover lock, key and lock-key structure

Abstract

The utility model discloses a valve cover lock, key and lock key structure relates to mechanical lock technical field, wherein valve cover lock includes lock cover and elastic collar subassembly, the lock cover is used for installing in the valve cover and is covered on the valve shaft, the lock cover with between the valve cover is connected through the elastic collar subassembly joint, the upper surface of lock cover is equipped with swallow -tail shape recess, is used for with key cooperation to take out lock cover. The valve cover lock, key and lock key structure provided by the utility model can lock the valve, prevent the illegal operation of valve to the unrelated personnel, guarantee the safety of valve use, and valve cover lock opening is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of mechanical lock technology, and in particular to a valve cover lock, key and lock key structure. Background Technology

[0002] A flow control valve has a valve cover mounted on its body, and a valve shaft mounted on the valve cover. The valve opening is controlled by adjusting the valve shaft, thus regulating the flow rate. Currently, the valve shaft of flow control valves is exposed, allowing unauthorized personnel to illegally and arbitrarily operate the valve, causing changes in its opening and affecting the safe operation of the pipeline system. Utility Model Content

[0003] The purpose of this utility model is to provide a valve cover lock, key, and lock-key structure to solve the problems existing in the prior art. It can lock the valve, prevent unauthorized personnel from illegally operating the valve, ensure the safety of valve use, and make the valve cover lock easy and quick to open.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a valve cover lock, including a lock cover and an elastic retaining ring assembly. The lock cover is used to install inside the valve cover and cover the valve shaft. The lock cover and the valve cover are connected by the elastic retaining ring assembly. The upper surface of the lock cover is provided with a dovetail-shaped groove for cooperating with a key to remove the lock cover.

[0005] Preferably, the elastic retaining ring assembly includes a rubber ring and an open wire retaining ring. A mounting groove is provided on the outer circumferential surface of the lock cover. The rubber ring and the open wire retaining ring are installed in the mounting groove. The open wire retaining ring is sleeved on the outside of the rubber ring. The inner wall of the valve cover is provided with a retaining groove corresponding to the open wire retaining ring.

[0006] Preferably, the mounting groove is a square groove, and the rubber ring is a square rubber ring or an O-ring.

[0007] Preferably, the rubber ring is a silicone rubber ring, and the open steel wire retaining ring is a 304 stainless steel retaining ring.

[0008] This utility model also provides a key corresponding to the valve cover lock described above, including a key seat, a sleeve, a pull shaft, an elastic element, and a handle. The two sleeves are symmetrically and movably disposed within the key seat. The bottoms of the two sleeves are supported within the key seat by a support assembly, and the tops are supported on the top plate of the key seat by the elastic element. The lower end of each sleeve is provided with a dovetail-shaped protrusion corresponding to the dovetail-shaped groove. The pull shaft includes a pull rod and an elliptical rotating push plate fixed to the bottom of the pull rod. The opposite side of the two sleeves is provided with a rotating slot corresponding to the rotating push plate. The bottom end of the pull rod extends between the two sleeves, and the two ends of the rotating push plate are respectively inserted into the two rotating slots. The top end of the pull rod extends upward through the top plate of the key seat and connects to the handle.

[0009] Preferably, the elastic element is a spring, and a flat washer is provided between the two sleeves and the spring. A semi-circular head rivet is connected to the upper end of each sleeve, and the sleeve abuts against the flat washer through the semi-circular head of the semi-circular head rivet.

[0010] Preferably, the support assembly includes a support flat pad and an elastic retaining ring, the two retaining sleeves are supported on the support flat pad, the support flat pad is supported on the elastic retaining ring, and the elastic retaining ring is engaged in the retaining ring groove in the key seat.

[0011] Preferably, the upper end of the pull rod is provided with a radial through hole, the lower end of the handle is provided with an arc-shaped pressure plate, the arc-shaped pressure plate is provided with an eccentric hole, and the pin passes through the through hole and the eccentric hole to connect the pull rod and the arc-shaped pressure plate to each other.

[0012] Preferably, the bottom opening of the key seat is provided with a stepped hole, wherein the diameter of the larger hole in the stepped hole is larger than the outer diameter of the valve cover, and the diameter of the smaller hole in the stepped hole is larger than the diameter of the lock cover and smaller than the outer diameter of the valve cover.

[0013] This utility model also provides a lock and key structure, including a valve cover lock and a key, wherein the valve cover lock is the valve cover lock described above, and the key is the key described above.

[0014] The present invention achieves the following technical advantages over the prior art: The valve cover lock, key, and lock key structure provided by this utility model can lock the lock cover inside the valve cover by means of an elastic retaining ring assembly, and place the valve shaft cover inside the lock cover to lock the valve, thereby preventing unauthorized personnel from illegally operating the valve and ensuring the safety of valve use. The dovetail-shaped groove on the upper surface of the lock cover can cooperate with the key to facilitate the removal of the lock cover. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the valve cover lock in Embodiment 1; Figure 2 This is a schematic diagram of the valve cover lock installed inside the valve cover in Embodiment 1; Figure 3 This is a schematic diagram of the open wire retaining ring in Example 1; Figure 4 This is a schematic diagram of the key structure in Example 2; Figure 5 This is a schematic diagram of the pull shaft in Example 2; Figure 6 This is a top view of the pull shaft in Embodiment 2; Figure 7 This is a schematic diagram of the handle structure in Embodiment 2; Figure 8 This is a schematic diagram showing the structural relationship between the lock and key structure and the valve cover when the lock cover is disassembled in Example 3.

[0017] In the diagram: 1-Lock cover, 2-Elastic retaining ring assembly, 3-Valve cover, 4-Valve shaft, 5-Dovetail groove, 6-Rubber ring, 7-Open wire retaining ring, 8-Mounting groove, 9-Slot, 10-Key seat, 11-Collar sleeve, 12-Pull shaft, 13-Elastic element, 14-Handle, 15-Support assembly, 16-Top plate, 17-Dovetail protrusion, 18-Pull rod, 19-Rotating push plate, 20-Rotating slot, 21-Flat washer, 22-Semi-circular head rivet, 23-Supporting flat washer, 24-Elastic retaining ring, 25-Retaining ring slot, 26-Through hole, 27-Arc-shaped pressure plate, 28-Eccentric hole, 29-Pin, 30-Large hole, 31-Small hole, 32-Step surface. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this utility model is to provide a valve cover lock, key, and lock-key structure to solve the problems existing in the prior art. It can lock the valve, prevent unauthorized personnel from illegally operating the valve, ensure the safety of valve use, and make the valve cover lock easy and quick to open.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 like Figures 1-3 As shown, this embodiment provides a valve cover lock, including a lock cover 1 and an elastic retaining ring assembly 2. The lock cover 1 is used to install inside the valve cover 3 and cover the valve shaft 4. The lock cover 1 and the valve cover 3 are connected by the elastic retaining ring assembly 2. The upper surface of the lock cover 1 is provided with a dovetail-shaped groove 5, which is used to cooperate with the key in Embodiment 2 to remove the lock cover 1.

[0022] In this embodiment, the elastic retaining ring assembly 2 includes a rubber ring 6 and an open steel wire retaining ring 7. A mounting groove 8 is provided on the outer peripheral surface of the lock cover 1. The rubber ring 6 and the open steel wire retaining ring 7 are installed in the mounting groove 8. The open steel wire retaining ring 7 is sleeved on the outside of the rubber ring 6. The inner wall of the valve cover 3 is provided with a retaining groove 9 corresponding to the open steel wire retaining ring 7.

[0023] In this embodiment, the mounting groove 8 is a square groove, and the rubber ring 6 is a square rubber ring. The rubber ring 6 is also selected as an O-ring.

[0024] In this embodiment, the rubber ring 6 is a silicone rubber ring, and the open steel wire retaining ring 7 is a 304 stainless steel retaining ring.

[0025] When installing the valve cover lock, pressing the lock cover 1 downwards causes the open wire retaining ring 7 and the rubber ring 6 to elastically deform. The open wire retaining ring 7 engages with the groove 9, enclosing the valve shaft 4 within the lock cover 1, thus locking the valve and preventing unauthorized operation, ensuring the safety of valve use. When it is necessary to remove the valve cover lock, the lock cover 1 is pulled upwards by using the key in Embodiment 2 in conjunction with the dovetail groove 5.

[0026] Example 2 like Figures 4-8As shown, this embodiment provides a key corresponding to the valve cover lock described in Embodiment 1, including a key seat 10, a sleeve 11, a pull shaft 12, an elastic element 13, and a handle 14. Two sleeves 11 are symmetrically and movably disposed within the key seat 10. The bottoms of the two sleeves 11 are supported within the key seat 10 by a support assembly 15, and the tops are supported on the top plate 16 of the key seat 10 by an elastic element 13. The lower end of the sleeve 11 is provided with a dovetail-shaped protrusion 17 corresponding to the dovetail-shaped groove 5. The pull shaft 12 includes a pull rod 18 and an elliptical rotating push plate 19 fixed to the bottom of the pull rod 18. The opposite side of the two sleeves 11 is provided with a rotating slot 20 corresponding to the rotating push plate 19. The bottom end of the pull rod 18 extends into the space between the two sleeves 11. The two ends of the rotating push plate 19 are respectively inserted into the two rotating slots 20. The top end of the pull rod 18 extends upward through the top plate 16 of the key seat 10 and is connected to the handle 14. The elastic element 13 can press the two retaining sleeves 11 against the support assembly 15, ensuring the stability of the structure. When the pull shaft 12 is pulled upward, the two retaining sleeves 11 can compress the elastic element 13 so that the lock cover 1 can be pulled upward through the dovetail protrusion 17.

[0027] In this embodiment, the elastic element 13 is a spring. A flat washer 21 is provided between the two retaining sleeves 11 and the spring. A semi-circular head rivet 22 is connected to the upper end of each retaining sleeve 11. The retaining sleeve 11 abuts against the flat washer 21 through the semi-circular head of the semi-circular head rivet 22. The semi-circular head rivet 22 is located on the upper surface of the retaining sleeve 11. The spring presses the semi-circular head rivet 22 through the flat washer 21, pressing the retaining sleeve 11 tightly onto the support assembly 15.

[0028] In this embodiment, the support assembly 15 includes a support flat pad 23 and an elastic retaining ring 24. Two retaining sleeves 11 are supported on the support flat pad 23, the support flat pad 23 is supported on the elastic retaining ring 24, and the elastic retaining ring 24 is engaged in the retaining ring slot 25 in the key seat 10.

[0029] In this embodiment, the upper end of the pull rod 18 is provided with a radial through hole 26, and the lower end of the handle 14 is provided with an arc-shaped pressure plate 27. The arc-shaped pressure plate 27 is provided with an eccentric hole 28. The pin 29 passes through the through hole 26 and the eccentric hole 28 to connect the pull rod 18 and the arc-shaped pressure plate 27 to each other.

[0030] In this embodiment, the bottom opening of the key seat 10 is provided with a stepped hole. The diameter of the large hole 30 in the stepped hole is greater than the outer diameter of the valve cover 3, and the diameter of the small hole 31 in the stepped hole is greater than the diameter of the lock cover 1 and less than the outer diameter of the valve cover 3.

[0031] When it is necessary to disassemble the valve cover lock in Embodiment 1, first, abut the two ends of the short shaft of the rotating push plate 19 against the two rotating slots 20, so that the dovetail protrusions 17 of the two sleeves 11 are in an inward retracted state. Then, the lower end of the key seat 10 is fastened onto the valve cover 3, and the upper end of the valve cover 3 extends into the large hole 30 of the stepped hole. The upper end surface of the valve cover 3 abuts against the step surface 32 of the stepped hole. At this time, the dovetail protrusions 17 of the two sleeves 11 extend into the dovetail groove 5 on the upper surface of the lock cover 1. Then, rotate the handle 14 to drive the pull shaft 12 to rotate, so that the two ends of the long shaft of the rotating push plate 19 abut against the two rotating slots 20. Due to the rotating push plate 19 With the longer axis than the shorter axis, the rotating push plate 19 gradually pushes the two dovetail protrusions 17 of the two sleeves 11 outward, causing the two dovetail protrusions 17 to engage with the dovetail grooves 5. Then, the handle 14 is rotated downward (to the lower right in the figure). Under the interaction force between the arc-shaped pressure plate 27 and the top plate 16 of the key seat 10, the pull shaft 12 is gradually lifted through the eccentric pin 29. The pull shaft 12 moves upward, and through the cooperation of the rotating push plate 19 and the rotating slot 20, it drives the sleeves 11 and the lock cover 1 to move upward together. The small hole 31 of the stepped hole provides space for the lock cover 1 to move upward, pulling the lock cover 1 out of the valve cover 3. After that, the handle 14 is reset, the dovetail protrusions 17 retract inward, and the lock cover 1 can be removed.

[0032] Example 3 like Figures 1-8 As shown, this embodiment provides a lock and key structure, including a valve cover lock and a key. The valve cover lock is the valve cover lock described in Embodiment 1, and the key is the key described in Embodiment 2.

[0033] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A valve cover lock, characterized in that: The device includes a lock cover and a resilient retaining ring assembly. The lock cover is used to install inside the valve cover and cover the valve shaft. The lock cover and the valve cover are connected by the resilient retaining ring assembly. The upper surface of the lock cover is provided with a dovetail-shaped groove for cooperating with a key to remove the lock cover.

2. The valve cover lock according to claim 1, characterized in that: The elastic retaining ring assembly includes a rubber ring and an open steel wire retaining ring. A mounting groove is provided on the outer circumference of the lock cover. The rubber ring and the open steel wire retaining ring are installed in the mounting groove. The open steel wire retaining ring is sleeved on the outside of the rubber ring. The inner wall of the valve cover is provided with a retaining groove corresponding to the open steel wire retaining ring.

3. The valve cover lock according to claim 2, characterized in that: The mounting groove is a square groove, and the rubber ring is a square rubber ring or an O-ring.

4. The valve cover lock according to claim 2, characterized in that: The rubber ring is a silicone rubber ring, and the open steel wire retaining ring is a 304 stainless steel retaining ring.

5. A key corresponding to the valve cover lock according to any one of claims 1 to 4, characterized in that: The device includes a key housing, ferrules, a pull shaft, an elastic element, and a handle. Two ferrules are symmetrically and movably disposed within the key housing. The bottoms of the two ferrules are supported within the key housing by a support assembly, and the tops are supported on the top plate of the key housing by the elastic element. The lower end of each ferrule has a dovetail-shaped protrusion corresponding to the dovetail-shaped groove. The pull shaft includes a pull rod and an elliptical rotating push plate fixed to the bottom of the pull rod. The two ferrules have rotating slots corresponding to the rotating push plate on opposite sides. The bottom end of the pull rod extends between the two ferrules, and the two ends of the rotating push plate are respectively inserted into the two rotating slots. The top end of the pull rod extends upward through the top plate of the key housing and connects to the handle.

6. The key according to claim 5, characterized in that: The elastic element is a spring, and a flat washer is provided between the two sleeves and the spring. A semi-circular head rivet is connected to the upper end of each sleeve, and the sleeve abuts against the flat washer through the semi-circular head of the semi-circular head rivet.

7. The key according to claim 5, characterized in that: The support assembly includes a support flat pad and an elastic retaining ring. Two retaining sleeves are supported on the support flat pad, and the support flat pad is supported on the elastic retaining ring. The elastic retaining ring is engaged in the retaining ring slot in the key seat.

8. The key according to claim 5, characterized in that: The upper end of the pull rod is provided with a radial through hole, and the lower end of the handle is provided with an arc-shaped pressure plate. The arc-shaped pressure plate is provided with an eccentric hole, and the pin passes through the through hole and the eccentric hole to connect the pull rod and the arc-shaped pressure plate.

9. The key according to claim 5, characterized in that: The bottom opening of the key seat is provided with a stepped hole. The diameter of the larger hole in the stepped hole is larger than the outer diameter of the valve cover, and the diameter of the smaller hole in the stepped hole is larger than the diameter of the lock cover and smaller than the outer diameter of the valve cover.

10. A key-locking structure, characterized in that: It includes a valve cover lock and a key, wherein the valve cover lock is the valve cover lock according to any one of claims 1 to 4, and the key is the key according to any one of claims 5 to 9.

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