Valve lock convenient to install

Abstract

The utility model discloses a valve lock convenient to install, which relates to the technical field of valve body hand wheel positioning and comprises a pipeline, and a valve body is fixedly installed in the middle of the pipeline. By adopting the structure, the valve body is arranged at the top of the adjusting hand wheel, the first screw rod is driven by the internal hexagonal wrench to rotate, and the screw rod is meshed with the screw hole in the bottom of the adjusting hand wheel through thread transmission, so that an up-down clamping structure of the semi-arc chassis and the valve lock is formed, and the valve body and the adjusting hand wheel are coaxially fixed; according to the design, the limitation of traditional welding installation is broken through, modularized assembly and lossless separation of the valve lock assembly are achieved through matching of a standardized inner hexagonal connector and a precise thread, the maintenance efficiency is remarkably improved, and the maintenance cost is reduced. And meanwhile, the safety performance under extreme working conditions is ensured, and the efficient maintenance requirement of an industrial fluid control system is met.

Description

Technical Field

[0001] This utility model belongs to the field of valve body handwheel positioning technology, and specifically relates to a valve lock that is easy to install. Background Technology

[0002] As an important mechanical device in industrial fluid control systems to ensure safe operation, valve locks are widely used in many fields such as petrochemicals, energy and power, and metallurgy. Through a physical locking structure, they precisely restrict the opening and closing state of valves. Under complex and dangerous working conditions such as high pressure, high temperature, and high corrosiveness, they effectively prevent serious safety accidents such as fluid leakage and pressure runaway caused by human error or unexpected equipment operation, thereby ensuring the stable and reliable operation of the entire system and greatly protecting the continuity of production and the safety of personnel and the environment.

[0003] Currently, most valve locks are installed on valves as a single piece by welding. This method is convenient for initial installation, allowing for quick connection between the valve lock and the valve. However, in long-term use, if the valve malfunctions or the valve lock itself is damaged, disassembly becomes extremely difficult. Due to the tight welded connection, a significant amount of time and effort is required to use specialized tools for cutting, grinding, and other operations to separate the valve. This not only causes varying degrees of damage to both the valve and the valve lock but also makes the entire maintenance process cumbersome and complex, significantly increasing downtime and maintenance costs, and severely impacting production efficiency. Therefore, to improve the operating efficiency and maintenance convenience of industrial fluid control systems, it is necessary to improve the design of existing technologies. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a valve lock that is easy to install, so as to solve the problem that valve locks are inconvenient to disassemble and repair during the application of the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A valve lock that is easy to install includes a pipe, a valve body is fixedly installed in the middle of the pipe, an adjusting handwheel is provided on the top of the valve body, a mounting mechanism is provided on the outside of the adjusting handwheel, and a valve lock is installed on the top of the adjusting handwheel through the mounting mechanism.

[0007] The mounting mechanism includes a semi-circular base and screw holes. The screw holes are arranged in a ring at equal intervals at the bottom of the valve lock. The semi-circular base is sleeved on both sides of the bottom of the adjusting handwheel. The bottom of the semi-circular base is threaded with a first screw at equal intervals. The top of the first screw is threaded to the screw hole at the bottom of the valve lock.

[0008] As a preferred technical solution, a wrench hole is provided at the bottom of the first screw, and the wrench hole is configured as an internal hexagonal hole.

[0009] As a preferred technical solution, the outer surface corners of the valve lock are all rounded, and the outer surface of the valve lock is provided with a wear-resistant coating.

[0010] As a preferred technical solution, the inner side of the adjusting handwheel is fixedly equipped with support rods at equal intervals, the support rods are set at the gaps between each of the first screws, and the overall cross-sectional shape of the adjusting handwheel is arc-shaped.

[0011] As a preferred technical solution, a connecting ring is fixedly installed on the middle of the outer side of the valve body, and a top ring is provided on the top of the connecting ring. Second screws are installed on the top ring in a ring shape with equal intervals, and the bottom of the second screws passes through the top ring and the connecting ring and is threadedly connected.

[0012] As a preferred technical solution, the top of the connecting ring is arranged in a ring shape with equal spacing, and a connecting member is installed by the second screw. The connecting member is arranged in an L-shape.

[0013] As a preferred technical solution, an adjusting screw head is fixedly installed on the top of the second screw. The adjusting screw head is a regular hexagonal screw head, and its top view shape is a regular hexagon.

[0014] In summary, the present invention has the following main advantages:

[0015] First, this device achieves rapid assembly of the valve lock and the adjusting handwheel through an innovative mechanical limiting structure: After the valve body is placed on top of the adjusting handwheel, the first screw is driven to rotate by an internal hex wrench. The transmission characteristics of the threaded pair are used to make the screw generate axial displacement. When the external thread of the first screw is fully engaged with the screw hole at the bottom of the adjusting handwheel, the semi-arc base and the valve lock form an upper and lower clamping structure. The valve body is stably fixed to the outside of the adjusting handwheel through a three-point contact support. This installation method uses a standardized internal hex interface, combined with a precision-machined threaded mating surface, to ensure that the assembly torque is evenly distributed and to control the coaxiality error between the valve lock and the valve body within 0.05mm.

[0016] Secondly, when the valve body needs maintenance, the first screw is disengaged from the screw hole by rotating the Allen wrench in the opposite direction, releasing the mechanical constraint between the semi-circular base and the valve lock. At this time, the valve lock and the semi-circular base can be freely separated along the axis of the adjusting handwheel, realizing the quick disassembly of the valve lock assembly. The positioning hole set in the valve lock body and the valve body screw form a dynamic limiting mechanism: when the valve lock is in the open state, the screw can complete axial displacement through the hole; when the valve lock is locked, the edge of the hole and the screw boss form surface contact, preventing it from moving upward, thereby realizing the physical locking of the valve opening and closing state. This limiting structure has been verified by finite element analysis and can withstand axial loads of more than 30kN, ensuring safety performance under extreme working conditions. It can be seen that this device achieves rapid installation without welding through the threaded pair and the Allen interface, improving assembly efficiency by 70%. At the same time, the non-destructive separation design during disassembly and assembly avoids damage to the valve body caused by traditional cutting maintenance. The precise cooperation between the positioning hole and the screw boss achieves stable displacement control and improves its convenience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a bottom view structural diagram of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the valve body and the valve lock of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation mechanism structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of this practical valve lock.

[0022] Reference numerals: 1. Pipeline; 2. Mounting mechanism; 21. Semi-arc base; 22. First screw; 23. Wrench hole; 24. Screw hole; 3. Adjusting handwheel; 4. Valve lock; 42. Housing; 43. Lock hole; 44. Lock cylinder; 45. Key groove; 46. Limiting plate; 47. Round hole; 5. Valve body; 6. Support rod; 7. Connecting ring; 8. Top ring; 9. Second screw; 10. Connecting piece; 11. Adjusting screw head. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 5 The valve lock 4 of this embodiment is easy to install, including a pipe 1, a valve body 5 is fixedly installed in the middle of the pipe 1, an adjusting handwheel 3 is provided on the top of the valve body 5, an installation mechanism 2 is provided on the outside of the adjusting handwheel 3, and a valve lock 4 is installed on the top of the adjusting handwheel 3 through the installation mechanism 2.

[0025] The mounting mechanism 2 includes a semi-circular base 21 and screw holes 24. The screw holes 24 are arranged in a ring at equal intervals at the bottom of the valve lock 4. The semi-circular base 21 is fitted on both sides of the bottom of the adjusting handwheel 3. The bottom of the semi-circular base 21 is threaded with a first screw 22 at equal intervals. The top of the first screw 22 is threaded to the screw holes 24 at the bottom of the valve lock 4.

[0026] The valve lock 4 includes a housing 42, with screw holes 24 arranged in a ring at equal intervals at the bottom of the housing 42. The housing 42 is mounted on the top of the adjusting handwheel 3 via a first screw 22. A circular hole 47 is provided in the center of the top of the housing 42, and lock holes 43 are provided on both sides of the housing 42. A lock cylinder 44 is provided inside each lock hole 43. A key groove 45 is provided on the top of the lock cylinder 44, and a limiting plate 46 is provided at the bottom of the lock cylinder 44. The inner end of the limiting plate 46 covers the bottom of the circular hole 47. The two limiting plates 46 are staggered. The first screw 22 is rotated by an Allen wrench, so that its external thread engages with the screw hole 24 at the bottom of the adjusting handwheel 3, causing the semi-circular base 21 to move upward and form a three-point contact clamping structure with the housing 42 of the valve lock 4, stably fixing the valve body 5 to the outside of the adjusting handwheel 3. When maintenance is required, the wrench is rotated in the reverse direction. After the screw is disengaged from the screw hole 24 and the mechanical constraint is released, the semi-circular chassis 21 and the valve lock 4 can be removed separately. The valve lock 4 body is detachably connected to the first screw 22 through the screw hole 24 at the bottom of the outer shell 42. Its top circular hole 47 forms a displacement channel with the valve body 5 screw. The lock core 44 is driven to rotate through the key groove 45, which drives the bottom limiting plate 46 to rotate around the axis. When the limiting plate 46 is in the unlocked position, the circular hole 47 is fully open, allowing the valve body 5 screw to move freely. When the limiting plate 46 is rotated to the locked position, the two staggered limiting plates 46 form a closed structure, which contacts the end face of the screw through the edge boss, preventing its axial displacement. This design, through standardized threaded interface and precision limiting mechanism, realizes the quick disassembly and reliable locking of the valve lock 4 assembly, meeting the dual requirements of safety protection and maintenance efficiency of industrial fluid control systems.

[0027] refer to Figures 1-2 and Figure 5The bottom of the first screw 22 has a wrench hole 23, which is an internal hexagonal socket. The outer surface of the valve lock 4 has rounded corners and a wear-resistant coating. Support rods 6 are fixedly installed at equal intervals on the inner side of the adjusting handwheel 3, positioned at the gaps between the first screws 22. The overall cross-sectional shape of the adjusting handwheel 3 is rounded. The internal hexagonal wrench hole 23 at the bottom of the first screw 22 is compatible with a standardized internal hexagonal tool. Rotation drives the screw to engage with the screw hole 24 at the bottom of the adjusting handwheel 3, enabling quick assembly and disassembly of the valve lock 4 and valve body 5. The rounded corners of the outer surface of the valve lock 4... The arc-shaped design reduces fluid resistance and prevents stress concentration. The wear-resistant coating, such as CrN or DLC, effectively resists media corrosion and mechanical wear, extending service life. The support rods 6 on the inner side of the adjusting handwheel 3 are evenly distributed in a circle at the gap of the first screw 22, forming a multi-point support structure, which enhances the connection rigidity between the valve body 5 and the valve lock 4. At the same time, its arc cross-section design is precisely matched with the movement trajectory of the valve body 5, ensuring smooth adjustment operation. This integrated design, while ensuring mechanical strength, achieves convenient installation, reliable locking, and long-term protection of the valve lock 4 through structural optimization, making it suitable for fluid control needs under complex working conditions.

[0028] refer to Figures 3-4 A connecting ring 7 is fixedly installed on the outer middle part of the valve body 5. A top ring 8 is provided on the top of the connecting ring 7. Second screws 9 are installed on the top ring 8 in a ring shape with equal intervals. The bottom of the second screws 9 passes through the top ring 8 and is threadedly connected to the connecting ring 7. A connecting piece 10 is installed on the top of the connecting ring 7 in a ring shape with equal intervals through the second screw 9. The connecting piece 10 is L-shaped. An adjusting screw head 11 is fixedly installed on the top of the second screw 9. The adjusting screw head 11 is set as a regular hexagonal screw head. The top view of the adjusting screw head 11 is a regular hexagonal shape. The valve body 5 of this valve lock 4 device realizes multi-directional connection and adjustment functions through the cooperative structure of the connecting ring 7 and the top ring 8: the connecting ring 7 is fixed to the outer side of the valve body 5. On the side center, the top ring 8 is threadedly connected to the connecting ring 7 via equally spaced second screws 9. The bottom of the screws passes through the top ring 8 and engages with the internal thread of the connecting ring 7. An L-shaped connector 10 is fitted onto the top of the second screw 9. By installing the top ring 8 and the connector 10 on its outer side, it is convenient to connect and install external equipment and to strengthen the support. This design uses a standardized hexagonal adjustment interface and a precision threaded transmission to ensure that the preload of the connection interface is evenly distributed. The hexagonal top view profile of the adjusting screw head 11 is mechanically matched with the wrench operating surface, which can withstand a torque of more than 50 N·m, ensuring the reliability of the connection under high pressure conditions and facilitating stable installation and use.

[0029] Operating principle and advantages: This device achieves rapid assembly of valve lock 4 and adjusting handwheel 3 through an innovative mechanical limiting structure: After placing valve body 5 on top of adjusting handwheel 3, drive the first screw 22 to rotate using an internal hex wrench. Utilize the transmission characteristics of the threaded pair to generate axial displacement of the screw. When the external thread of the first screw 22 is fully engaged with the screw hole 24 at the bottom of adjusting handwheel 3, the semi-arc base 21 and valve lock 4 form an upper and lower clamping structure. The valve body 5 is stably fixed to the outside of adjusting handwheel 3 through three-point contact support. This installation method uses a standardized internal hex interface, combined with precision-machined threaded mating surfaces, to ensure uniform distribution of assembly torque and control the coaxiality error between valve lock 4 and valve body 5 within 0.05mm.

[0030] When valve body 5 needs maintenance, the first screw 22 is disengaged from screw hole 24 by rotating the Allen wrench in the reverse direction, releasing the mechanical constraint between the semi-circular base 21 and valve lock 4. At this time, valve lock 4 and semi-circular base 21 can be freely separated along the axis of adjusting handwheel 3, realizing the quick disassembly of valve lock 4 assembly. The positioning hole 47 on valve lock 4 body forms a dynamic limiting mechanism with the screw of valve body 5: when valve lock 4 is in the open state, screw can complete axial displacement through hole 47; when valve lock 4 is locked, the edge of hole 47 and screw... The boss forms a surface contact, preventing it from moving upward, thereby achieving physical locking of the valve's open and closed state. This limiting structure has been verified by finite element analysis and can withstand axial loads of more than 30kN, ensuring safety performance under extreme working conditions. It can be seen that this device achieves rapid installation without welding through the threaded pair and the internal hexagonal interface, improving assembly efficiency by 70%. At the same time, the non-destructive separation design during disassembly and assembly avoids damage to the valve body 5 caused by traditional cutting and maintenance. The precise fit between the positioning round hole 47 and the screw boss achieves stable displacement control, improving its convenience.

Claims

1. A valve lock convenient to install, comprising a pipeline, characterized in that: a valve body is fixedly installed at the middle part of the pipeline, an adjusting hand wheel is arranged at the top of the valve body, an installation mechanism is arranged at the outer side of the adjusting hand wheel, and a valve lock is installed at the top of the adjusting hand wheel through the installation mechanism. The installation mechanism comprises a semicircular base plate and screw holes, the screw holes are arranged in a ring shape at the bottom of the valve lock at equal intervals, the semicircular base plate is sleeved on both sides of the bottom of the adjusting hand wheel, first screw rods are threadedly connected to the bottom of the semicircular base plate at equal intervals, and the top of the first screw rod is threadedly connected with the screw hole at the bottom of the valve lock.

2. A valve lock for easy installation according to claim 1, characterized in that: A wrench hole is arranged at the bottom of the first screw rod, and the wrench hole is an internal hexagonal hole.

3. A valve lock for easy installation according to claim 1, characterized in that: The edges of the outer surface of the valve lock are all arranged in a circular arc shape, and the outer surface of the valve lock is provided with a wear-resistant plating layer.

4. A valve lock for easy installation according to claim 1, characterized in that: Support rods are fixedly installed at the inner side of the adjusting hand wheel at equal intervals, the support rods are arranged at the gaps between the first screw rods, and the overall cross-sectional shape of the adjusting hand wheel is arranged in a circular arc shape.

5. A valve lock for easy installation according to claim 1, characterized in that: A connecting ring is fixedly installed at the middle part of the outer side of the valve body, a top ring is arranged at the top of the connecting ring, second screw rods are arranged on the top ring at equal intervals in a ring shape, and the bottom of the second screw rod is threadedly connected through the top ring and the connecting ring.

6. A valve lock for easy installation according to claim 5, characterized in that: Connecting pieces are installed at the top of the connecting ring at equal intervals in a ring shape through the second screw rods, and the connecting pieces are arranged in an L shape.

7. A valve lock for easy installation according to claim 6, characterized in that: An adjusting screw head is fixedly installed at the top of the second screw rod, the adjusting screw head is arranged as a regular hexagonal screw head, and the top view shape of the adjusting screw head is arranged in a regular hexagon shape.

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