CN109595385B

CN109595385B - Valve hand wheel capable of preventing misoperation

Info

Publication number: CN109595385B
Application number: CN201910069104.0A
Authority: CN
Inventors: 王军
Original assignee: Individual
Current assignee: Beijing Jiangxi Gas Cogeneration Co ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-01-24
Anticipated expiration: 2039-01-24
Also published as: CN109595385A

Abstract

The invention discloses a valve hand wheel for preventing misoperation, wherein the valve hand wheel is provided with two valve hand wheels which are respectively used for opening and closing a valve, each hand wheel is respectively provided with an inner ring and an outer ring, the inner diameter of the outer ring is larger than the outer diameter of the inner ring, a plurality of ratchets are uniformly distributed on the outer wall of the inner ring, the inner wall of the inner ring is connected with the outer wall of a center ring through a connecting rod, the inner wall of the center ring is connected with a valve rod through a connecting key, one end of the valve rod is connected with a valve plate, a plurality of radial blind holes are uniformly distributed on the inner wall of the outer ring, pawls matched with the ratchets are arranged in the radial blind holes, springs are arranged between the pawls and the bottoms of the. The valve hand wheel for preventing misoperation has the characteristics of simple structure, convenience and quickness in use, capability of opening and closing the valve in a narrow space range, capability of avoiding accidents caused by misoperation and the like.

Description

Valve hand wheel capable of preventing misoperation

Technical Field

The invention relates to the technical field of valve structures, in particular to a valve hand wheel capable of preventing misoperation.

Background

In the production fields of petrochemical industry and the like, a large number of valves are needed, and in order to achieve the purpose of labor saving, a valve hand wheel is usually used for valve opening and closing operation. At present, an F-shaped valve hand wheel is generally adopted for valve opening and closing operation, an opening part of the F-shaped valve hand wheel is clamped on a valve hand wheel body during operation, and the valve hand wheel is driven to rotate by pulling a forcing rod of the F-shaped valve hand wheel, so that the purpose of opening and closing the valve is achieved. However, when the valve is opened or closed, the stress point needs to be changed repeatedly, a wide operation space is needed, the phenomenon of slipping is easy to occur, the operation safety is poor, the use is complicated, the operation is time-consuming and labor-consuming, and the possibility of wrong operation and reverse moving direction is also generated.

The utility model discloses a utility model patent that grant publication number is CN205674099U discloses a valve handle that uses with valve handle cooperation, including fixture, application of force pole, ratchet head and latch, the ratchet head directly links to each other with application of force pole one end to the fastening is in the connecting hole of fixture, and the one end of latch is fixed on fixture, and the other end extends to the direction of keeping away from fixture, is used for the chucking valve rod. When the valve is used, the clamping teeth are clamped on a valve rod of the valve, and the ratchet head is driven by rotating the handle to rotate the valve, so that the valve is opened and closed. The defect is that the clamp and the ratchet head are fixedly connected and can not be detached, but the sizes of valve hand wheels in practical application are different, so that the clamp teeth and the valve hand wheels are unstable in connection, the clamp teeth cannot be universally used for valve hand wheels of different models, the use is inconvenient, and the application range is small. It is not suitable for opening and closing the valve in a narrow space.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a valve hand wheel capable of preventing misoperation, which has a simple structure, is convenient to use, can be used for opening and closing a valve in a narrow space range, and can avoid accidents caused by misoperation.

In order to achieve the purpose, the technical scheme of the invention is to design a valve hand wheel for preventing misoperation, wherein two valve hand wheels are arranged and are respectively used for opening and closing a valve, each hand wheel is respectively provided with an inner ring and an outer ring, the inner diameter of the outer ring is larger than the outer diameter of the inner ring, a plurality of ratchets are uniformly distributed on the outer wall of the inner ring, the inner wall of the inner ring is connected with the outer wall of a center ring through a connecting rod, the inner wall of the center ring is connected with a valve rod through a connecting key, one end of the valve rod is connected with a valve plate, a plurality of radial blind holes are uniformly distributed on the inner wall of the outer ring, pawls matched with the ratchets are arranged in the radial blind holes, springs are arranged between the pawls and the bottoms of the.

In order to ensure smooth opening and closing operation of the valve and reduce abrasion to ratchets and pawls, the preferable technical scheme is that at least three radial blind holes are arranged.

In order to ensure the smooth switching operation of the valve and reduce the abrasion to the ratchet and the pawl, the further preferable technical scheme is that 4-6 blind holes are arranged in the radial direction.

In order to facilitate processing of the blind hole and improve the processing efficiency, the further preferred technical scheme is that the radial blind hole is provided with threads at one end of a large hole of the radial stepped through hole, a screw plug is additionally arranged at one end of the large hole with the threads, and one end of the large hole with the threads is arranged on one side of the outer wall of the outer ring.

In order to facilitate the installation and fixation of the spring, a further preferable technical scheme is that spring seats are respectively arranged at the bottom of the pawl and the bottom of the blind hole.

In order to improve the machining and manufacturing efficiency of the valve hand wheel and simultaneously facilitate use and prevent misoperation, a further preferable technical scheme is that the outer ring and the inner ring are both cast parts, and opening or closing and directional arrow symbols are cast on the surfaces of the cast parts.

In order to facilitate the processing of the blind holes and the improvement of the processing efficiency, the further preferable technical scheme is that the radial blind holes or the stepped holes on the outer ring and the threads on the large holes of the stepped holes are formed on the casting through machining.

In order to improve the construction efficiency and ensure the processing quality, and simultaneously, in order to facilitate the maintenance and the replacement of the worn ratchet teeth, the ratchet teeth on the outer wall of the inner ring, the inner wall of the center ring and the key groove are machined.

In order to facilitate the improvement of the construction efficiency and ensure the processing quality, the ratchets on the outer wall of the inner ring are embedded ratchets, a dovetail convex block or a T-shaped convex block is arranged on one side of each ratchet, and a dovetail slot or a T-shaped slot matched with the dovetail convex block or the T-shaped convex block is arranged on the outer wall of the inner ring.

In order to facilitate the switching operation of the hand wheel, a further preferable technical scheme is that a plurality of convex hand wheels are arranged on the outer wall of the outer ring.

The invention has the advantages and beneficial effects that: the valve hand wheel for preventing misoperation has the characteristics of simple structure, convenience and quickness in use, capability of opening and closing the valve in a narrow space range, capability of avoiding accidents caused by misoperation and the like.

The hand wheel can only execute corresponding door opening or closing operation, and can not open or close the valve, thereby essentially avoiding the possibility of misoperation. The valve opening hand wheel is used for opening the valve, is distinguished by green painting, open characters and other typefaces in appearance, and is marked with a valve opening arrow mark rotating anticlockwise. Functionally, in order to avoid misoperation, the valve opening hand wheel uses a left-handed ratchet, and the ratchet and the pawl slip under the action of the spring during reverse rotation, so that when misoperation (namely, the valve opening hand wheel performs valve closing operation), a valve rod cannot rotate, and misoperation is locked. Similarly, the hand wheel for closing the valve uses right-handed ratchets, is distinguished by red painting and typewriting such as 'close' and 'close' in appearance, and is marked with an arrow mark for opening the valve by clockwise rotation. In terms of function, in order to avoid misoperation, when misoperation (namely, the operation of opening the valve is performed by a valve closing hand wheel) is performed, the valve rod cannot rotate, and misoperation is locked. By respectively using the hand wheels with two locking functions for opening and closing the valve, the correct execution of the operation is ensured, and the economic benefit and the social influence loss caused by misoperation are avoided.

Drawings

FIG. 1 is a schematic top view of a valve handle for preventing misoperation according to the present invention;

FIG. 2 is a schematic top view of a valve handle for preventing misoperation in the state of opening misoperation of a valve opening wheel;

FIG. 3 is a schematic top view of the valve handle hand wheel for preventing erroneous operation according to the present invention in a closed state of the valve handle wheel;

FIG. 4 is a schematic top view of a valve handle for preventing erroneous operation according to the present invention, showing a closing error operation state of a valve closing wheel;

fig. 5 is a schematic main sectional structure view of the valve hand wheel for preventing misoperation according to the present invention.

In the figure: 1. a hand wheel; 2. an inner ring; 3. an outer ring; 4. a ratchet; 5. a connecting rod; 6. a center ring; 7. a connecting bond; 8. a valve stem; 9. a valve plate; 10. a radial blind hole; 11. a pawl; 12. a spring; 13. a spring seat; 14. a valve; 15. a convex hand wheel.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 5, the invention relates to a valve hand wheel for preventing misoperation, wherein two valve hand wheels 1 are arranged and are respectively used for opening and closing a valve 14, each hand wheel 1 is respectively provided with an inner ring 2 and an outer ring 3, the inner diameter of the outer ring 3 is larger than the outer diameter of the inner ring 2, a plurality of ratchets 4 are uniformly distributed on the outer wall of the inner ring 2, the inner wall of the inner ring 2 is connected with the outer wall of a center ring 6 through a connecting rod 5, the inner wall of the center ring 6 is connected with a valve rod 8 through a connecting key 7, one end of the valve rod 8 is connected with a valve plate 9, a plurality of radial blind holes 10 are uniformly distributed on the inner wall of the outer ring 3, pawls 11 matched with the ratchets 4 are arranged in the radial blind holes 10, springs 12 are arranged between the pawls 11 and the bottoms of the radial blind.

In order to ensure smooth opening and closing operation of the valve 13 and reduce wear on the ratchet teeth 4 and the pawl 11, the preferred embodiment of the invention is that the radial blind holes 10 are at least three.

In order to ensure smooth opening and closing operation of the valve 14 and reduce abrasion to the ratchet 4 and the pawl 11, the radial blind hole 10 can be provided with 4-6 radial blind holes.

In order to facilitate the processing of the radial blind hole 10 and the improvement of the processing efficiency, in a further preferred embodiment of the present invention, the radial blind hole 10 is formed by arranging a thread at one end of a large hole of the radial stepped through hole, additionally arranging a screw plug at one end of the large hole provided with the thread, and arranging one end of the large hole provided with the thread at one side of the outer wall of the outer ring.

In order to facilitate the mounting and fixing of the spring 12, a further preferred embodiment of the invention provides that a spring seat 14 is provided at the bottom of the pawl 11 and at the bottom of the blind radial hole 10.

In order to improve the machining efficiency of the valve hand wheel and simultaneously facilitate the use and prevent misoperation, the invention also discloses a further preferable embodiment that the outer ring 3 and the inner ring 2 are both cast parts, and open or close and directional arrow symbols are cast on the surfaces of the cast parts.

In order to facilitate the processing of the blind holes and the improvement of the processing efficiency, the invention also discloses a further preferable embodiment that the radial blind holes or the stepped holes on the outer ring 3 and the threads on the large holes of the stepped holes are machined on the casting.

In order to improve the construction efficiency and ensure the processing quality, and in order to facilitate the convenient maintenance and replacement of the worn ratchet teeth 4, a further preferred embodiment of the present invention is that the ratchet teeth 4 on the outer wall of the inner ring 2, the inner wall of the center ring 6 and the key groove are machined.

In order to improve the construction efficiency and ensure the processing quality, and meanwhile, in order to facilitate the convenient maintenance and replacement of the ratchets 4 after being worn, a further preferable embodiment of the invention is that the ratchets on the outer wall of the inner ring 2 are embedded ratchets 4, one side of each ratchet 4 is provided with a dovetail convex block or a T-shaped convex block, and the outer wall of the inner ring 2 is provided with a dovetail slot or a T-shaped slot (not shown in the figure) matched with the dovetail convex block or the T-shaped convex block.

In order to facilitate the opening and closing operation of the hand wheel, a further preferred embodiment of the present invention is that a plurality of outwardly protruding hand wheels 15 are provided on the outer wall of the outer ring 3.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a prevent maloperation's valve handle, a serial communication port, valve handle is equipped with two, be used for opening and closing of valve respectively, every hand wheel is equipped with inner ring and outer loop respectively, the internal diameter of outer loop is greater than the external diameter of inner ring, the equipartition has a plurality of ratchet on the outer wall of inner ring, the inner wall of inner ring passes through the outer wall connection of connecting rod and centre ring, the inner wall of centre ring passes through the connecting key and is connected with the valve rod, the one end and the valve plate of valve rod are connected, the equipartition has a plurality of radial blind hole on the inner wall of outer loop, be equipped with in the radial blind hole with ratchet complex pawl, be equipped with the spring between the bottom of the hole of pawl and radial blind hole.

2. A valve handwheel for preventing inadvertent operation as defined in claim 1, wherein at least three radial blind holes are provided.

3. The valve handle for preventing misoperation according to claim 2, wherein 4-6 blind holes are arranged in the radial direction.

4. The valve hand wheel for preventing misoperation according to claim 3, wherein the radial blind hole is formed by providing a thread at one end of the large hole of the radial stepped through hole, a screw plug is additionally arranged at one end of the large hole provided with the thread, and one end of the large hole provided with the thread is arranged on one side of the outer wall of the outer ring.

5. A valve handle for preventing malfunction according to claim 3, wherein spring seats are provided at the bottom of said pawl and the bottom of said blind hole, respectively.

6. A valve hand wheel for preventing inadvertent operation as claimed in claim 5, wherein the outer and inner rings are cast with on or off directional arrow symbols cast into the surface of the casting.

7. The valve hand wheel of claim 6, wherein the ratchet teeth on the outer wall of the inner ring, the inner wall of the center ring and the key slot are machined.

8. The valve hand wheel for preventing misoperation according to claim 6, wherein the ratchets on the outer wall of the inner ring are embedded ratchets, one side of each ratchet is provided with a dovetail lug or a T-shaped lug, and the outer wall of the inner ring is provided with a dovetail slot or a T-shaped slot matched with the dovetail lug or the T-shaped lug.

9. The valve hand wheel for preventing misoperation according to any one of claims 1 to 8, wherein a plurality of convex hand wheels are arranged on the outer wall of the outer ring.