CN217328597U

CN217328597U - Limiting device of multi-path ball valve

Info

Publication number: CN217328597U
Application number: CN202123380244.1U
Authority: CN
Inventors: 安志旭; 缪国平; 彭文凯; 龚衍钦; 车伟
Original assignee: Zigong New Dipper Valve Co ltd
Current assignee: Zigong New Dipper Valve Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-30
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a stop device of multichannel ball valve, mainly includes stop collar, spacing bolt, valve gap, handle, cam, interlocking round pin, interlocking bolt, spring, position sleeve, support etc. after the valve rod drove the rotatory certain angle of stop collar, makes the cam promote the interlocking round pin through pulling the handle, and then promotes the interlocking bolt, makes the interlocking bolt insert the spacing hole on the stop collar to it is spacing to realize the centre of valve switch in-process, realizes spacingly through spacing bolt in addition in the valve switch position. The limiting device realizes the limiting of the opening and closing of the valve and the middle position, and reduces the requirements on the actuator and the overall cost of the product.

Description

Limiting device of multi-path ball valve

Technical Field

The utility model relates to a multichannel ball valve especially relates to a stop device of multichannel ball valve.

Background

Ball valves are appeared in the 50 th of the 20 th century, and along with rapid development of science and technology, continuous improvement of production process and product structure, the ball valves are rapidly developed into a main valve class in short decades. In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. The multi-path ball valve is used as a special ball valve, is mainly used for cutting off, distributing and changing the flowing direction of a medium, and has the advantages of small occupied space, convenience in operation, good synchronism and the like. In some special working conditions, the multi-way ball valve is required to be limited at the opening, closing and middle positions sometimes, for example, a three-way distribution ball valve in a pipeline cleaning and sweeping system is adopted, the traditional multi-way ball valve is limited by an actuator, the cost is increased, and meanwhile, the delivery period is also prolonged, particularly, the actuator is abroad.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a following scheme:

a limiting device of a multi-path ball valve comprises a valve rod and a limiting structure, wherein the limiting structure comprises a limiting sleeve, an interlocking bolt, a support, a limiting bolt, a positioning sleeve, a linkage pin and a cam; the side wall of the valve cover is provided with a limiting connecting hole, the inner end of the interlocking bolt corresponds to the limiting hole, and the outer end of the interlocking bolt penetrates through the limiting connecting hole; the support is of a hollow structure, the support is fixed on the side wall of the valve cover corresponding to the limiting connecting hole, the top of the support is connected with the linkage pin, and the support is sleeved with the positioning sleeve; the outer end of the interlocking bolt penetrates through the limiting connecting hole and is connected with the inner end of the linkage pin in the support through a spring; the outer end of the linkage pin is abutted against the edge of the cam; the side walls on two sides of the valve cover limiting connecting hole are screwed into the limiting bolt, the inner end of the limiting bolt penetrates through the side wall of the valve cover, and when the limiting sleeve rotates, the limiting block can abut against the inside of the limiting bolt.

Further, a flat key is arranged between the side wall of the valve rod and the inner wall of the limiting sleeve.

Furthermore, the limiting bolt is also provided with a limiting nut for locking in a threaded manner.

Further, the cam is provided with a handle.

Furthermore, the bottom surface of the support is downwards provided with a screwing surface, the screwing surface and the inner wall of the limiting connecting hole are tapped, and the screwing surface is screwed into the limiting connecting hole to fix the support and the valve cover.

The utility model has the advantages that:

1. compared with a common multi-way ball valve, the multi-way ball valve realizes the limiting functions of opening, closing and middle positions, and reduces the requirements on an actuator and the overall cost of the product.

2. The position limitation of different rotation angles of the valve can be realized by changing the position or the number of the limiting holes.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a valve in a closed state;

FIG. 3 is a schematic structural view of a valve in a middle limit state;

fig. 4 is a structural diagram of the valve in an open state.

In the figure: 1. a limiting sleeve; 2. a limit bolt; 3. a valve stem; 4. a flat bond; 5. a valve cover; 6. a handle; 7. a cam; 8. a linkage pin; 9. an interlocking bolt; 10. a spring; 11. a positioning sleeve. 12. A support; 13. a limit nut; 14. a limiting hole; 15. limiting connecting holes; 16. a screw joint surface; 17. and a limiting block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. In the following description, certain specific details are set forth in order to provide a thorough understanding of the present invention. Rather, in the absence of such specific details, the present invention is capable of implementation in a manner that would enable persons skilled in the art to more effectively introduce those skilled in the art to the essential nature of their work using the description and presentation herein. Furthermore, it should be noted that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the scope of the actual protection. All the raw materials used in the following examples are commercially available products.

Example 1: as shown in fig. 1, the limiting device of the multi-path ball valve comprises a valve rod 3 and a limiting structure, wherein the limiting structure comprises a limiting sleeve 1, an interlocking bolt 9, a support 12, a limiting bolt 2, a positioning sleeve 11, a linkage pin 8 and a cam 7, the valve rod 3 is arranged in a valve cover 5, the limiting sleeve 1 is sleeved outside the valve rod 3, a limiting block 17 extends outwards from the side wall of the limiting sleeve 1, and a limiting hole 14 is formed in the side wall of the limiting sleeve 1 opposite to the limiting block 17; the side wall of the valve cover 5 is provided with a limiting connecting hole 15, the inner end of the interlocking bolt 9 corresponds to the limiting hole 14, and the outer end of the interlocking bolt 9 penetrates through the limiting connecting hole 15; the support 12 is of a hollow structure, the support 12 is fixed on the side wall of the valve cover 5 corresponding to the limiting connection hole 15, the top of the support 12 is connected with the linkage pin 8, and the support 12 is externally sleeved with a positioning sleeve 11; the outer end of the interlocking bolt 9 passes through a limiting connecting hole 15 and is connected with the inner end of the linkage pin 8 in the support 12 through a spring 10; the outer end of the linkage pin 8 is abutted against the edge of the cam 7; the side walls on two sides of the limiting connecting hole 15 of the valve cover 5 are screwed into the limiting bolt 2, the inner end of the limiting bolt 2 penetrates through the side wall of the valve cover 5, and when the limiting sleeve 1 rotates, the limiting block 17 can abut against the inner end of the limiting bolt 2.

Further, a flat key 4 is arranged between the side wall of the valve rod 3 and the inner wall of the limiting sleeve 1.

Furthermore, the limit bolt 2 is also provided with a limit nut 13 for locking.

Further, the cam 7 is provided with a handle 6.

Furthermore, the bottom surface of the support 12 is provided with a screw joint surface 16 downward, the screw joint surface 16 and the inner wall of the limit connecting hole 15 are tapped, and the screw joint surface 16 is screwed into the limit connecting hole 15 to fix the support 12 and the valve cover 5.

The valve rod 3 is turned off in the clockwise direction and turned on in the counterclockwise direction. Fig. 2 is the utility model discloses close spacing schematic diagram, fig. 3 is the utility model discloses middle spacing schematic diagram, fig. 4 is the utility model discloses open spacing schematic diagram. When the limiting position is closed, the valve rod 3 starts to rotate anticlockwise, the limiting sleeve 1 is driven to rotate while the valve rod 3 rotates, the actuator stops acting when the valve rod 3 rotates to the middle position needing limiting through the external mark of the valve, the valve rod 3 stops rotating, the handle 6 is pulled, the cam 7 rotates along with the handle 6 and pushes the linkage pin 8, the linkage pin 8 and the interlocking bolt 9 simultaneously push the valve cover 5, and the interlocking bolt 9 is inserted into the limiting hole 14 to realize limiting of the middle position. When the middle limit is not needed, the handle 6 is pulled, the linkage pin 8 and the interlocking bolt 9 are simultaneously pushed out of the valve cover 5 under the action of the spring 10, the middle limit is released, and the valve rod 3 continues to rotate anticlockwise until the opening limit position is reached. At the switch limit position, carry on spacingly by limit bolt 2, can prevent through screwing up limit nut 13 that limit bolt 2 is not hard up, prevent spheroid and valve body runner mouth dislocation.

The utility model discloses with ordinary multichannel ball valve comparison, realized the limit function of opening, closing and intermediate position, reduced requirement and the product overall cost to the executor. The position limitation of different rotation angles of the valve can be realized by changing the position or the number of the limiting holes.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the detailed implementation and application range, and in summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a stop device of multichannel ball valve which characterized in that: the valve rod is arranged in the valve cover, the limiting sleeve is sleeved outside the valve rod, a limiting block extends outwards from the side wall of the limiting sleeve, and a limiting hole is formed in the side wall of the limiting sleeve opposite to the limiting block; the side wall of the valve cover is provided with a limiting connecting hole, the inner end of the interlocking bolt corresponds to the limiting hole, and the outer end of the interlocking bolt passes through the limiting connecting hole; the support is of a hollow structure, the support is fixed on the side wall of the valve cover corresponding to the limiting connecting hole, the top of the support is connected with the linkage pin, and the support is sleeved with the positioning sleeve; the outer end of the interlocking bolt penetrates through the limiting connecting hole and is connected with the inner end of the linkage pin in the support through a spring; the outer end of the linkage pin is abutted against the edge of the cam; the side walls on two sides of the valve cover limiting connecting hole are screwed into the limiting bolt, the inner end of the limiting bolt penetrates through the side wall of the valve cover, and when the limiting sleeve rotates, the limiting block can abut against the inside of the limiting bolt.

2. A multi-way ball valve stop device as defined in claim 1, wherein: and a flat key is arranged between the side wall of the valve rod and the inner wall of the limiting sleeve.

3. A multi-way ball valve stop device as defined in claim 1, wherein: and the limiting bolt is also provided with a limiting nut for locking in a threaded manner.

4. A multi-way ball valve stop device as defined in claim 1, wherein: the cam is provided with a handle.

5. A multi-way ball valve stop device as defined in claim 1, wherein: the bottom surface of the support is downwards provided with a screwing surface, the screwing surface and the inner wall of the limiting connecting hole are tapped, and the screwing surface is screwed into the limiting connecting hole to fix the support and the valve cover.