CN211288824U

CN211288824U - Ball valve

Info

Publication number: CN211288824U
Application number: CN201921709379.8U
Authority: CN
Inventors: 宋良; 赵智康; 狄云佩; 林建明
Original assignee: Zhejiang Valogin Technology Co ltd
Current assignee: Zhejiang Valogin Technology Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-08-18
Anticipated expiration: 2029-10-12

Abstract

The utility model provides a ball valve belongs to valve technical field. It has solved the problem of the current ball valve assembly of not being convenient for. The ball valve comprises a valve body, a valve core, a valve rod and a handle, wherein the valve core, the valve rod and the handle are arranged in the valve body, a protruding cylindrical neck is arranged on the valve body, the inner end of the valve rod extends into the valve body and is circumferentially fixed with the valve core, the outer end of the valve rod penetrates out of the valve body from the neck and is connected with the handle, a blocking portion protruding inwards is arranged on the inner wall of the neck, the upper portion of the valve rod is flat, a side portion of the upper portion of the valve rod is further provided with a supporting surface which is a plane or a curved surface, and when the valve rod rotates around the axis of the valve rod in the circumferential direction, the supporting surface can. This ball valve has the advantage of the assembly of being convenient for.

Description

Ball valve

Technical Field

The utility model belongs to the technical field of the valve, a ball valve is related to.

Background

Valves are accessories for pipes used to open and close the pipe, control flow direction, regulate and control parameters of the transport medium. Currently, the more commonly used valves include ball valves, angle valves, stop valves, check valves, and the like.

Wherein, the ball valve includes the valve body, sets up case in the valve body, wears to establish valve rod on the valve body and the handle of being connected with the valve rod. When the valve is used, the valve rod is driven to rotate in the circumferential direction through the handle, and then the valve core connected with the inner end of the valve rod is driven to rotate in the circumferential direction, so that the opening, closing and flux adjustment of the water flow channel in the valve body are realized. In the use process, as the valve core is internally provided with the through hole in a penetrating manner along the radial direction, the water flow channel in the valve body can be gradually adjusted from complete closing to the maximum flow opening or adjusted to complete closing when the flow is maximum when the valve core rotates by 90 degrees in the rotation process.

Therefore, in the use process of the ball valve, a limit structure is often required to limit the rotation angles of the valve core, the valve rod and the handle, and then two position states of the valve, namely, the fully-opened state and the fully-closed state, are limited.

At present, comparatively common limit structure sets up convex lug including setting up the convex lug in the valve body outside, sets up the separation blade of buckling downwards on the handle, and it is spacing promptly to lean on with the lug counterbalance when the separation blade rotates along with the handle. However, the design of the structure has high requirement on the mounting and matching precision between the handle and the valve body, and is inconvenient for production and assembly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, provide a ball valve, the technical problem that solve is how to be more convenient for the assembly of ball valve.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a ball valve, includes the valve body, sets up case, valve rod and the handle in the valve body, it is cylindric neck to have the protrusion on the valve body, the inner of valve rod stretch into in the valve body and with case circumference is fixed, the outer end of valve rod from the neck is worn out the valve body and is connected with the handle, its characterized in that, the neck inner wall has inside convex stop part, the upper portion of valve rod is the platykurtic, the lateral part on valve rod upper portion still has the face of supporting for plane or curved surface, when the valve rod was around self axis circumferential direction, support to support the face can with stop part counterbalance and restrict the circumferential position of valve rod.

When the ball valve is used, the handle drives the valve rod and the valve core to rotate in the circumferential direction, and the valve rod can rotate in the circumferential direction by 90 degrees and then be positioned by abutting against the surface and the blocking part according to the blocking part and the position of the abutting against surface. Therefore, the ball valve respectively sets up spacing structure on the inboard and valve rod upper portion of valve body neck, only need carry out corresponding processing through the lathe to penetrate the valve rod the neck can, it is lower to the installation required precision between handle, valve rod and the valve body, the assembly of the ball valve of being convenient for.

In the above ball valve, the abutting surface is a plane, the blocking portion is flat and is located on the inner side of the top of the neck, and one side of the blocking portion facing the axis of the neck is a plane which can abut against the abutting surface.

In the above ball valve, the number of the blocking parts is two, and the blocking parts are symmetrically distributed on two opposite inner walls in the neck part, and the two symmetrical positions of the upper part of the valve rod are provided with abutting surfaces.

In the above ball valve, the number of the abutting surfaces is four, and the abutting surfaces are symmetrically distributed in pairs, wherein two abutting surfaces are adjacently arranged, and the two abutting surfaces can abut against the two blocking parts respectively when the valve rod rotates in the circumferential direction. The four abutting surfaces are symmetrically distributed in pairs, so that the valve rod does not have a positive position and a negative position, and the assembly is convenient.

In foretell ball valve, the ball valve is still including being the annular cutting ferrule of circle and the nut of threaded connection at the valve body tip, valve body inboard and nut inboard all have the direction inclined plane, the both ends of cutting ferrule support respectively and lean on two direction inclined planes, and work as when the nut precession, two direction inclined planes move in opposite directions and extrude the cutting ferrule so that the cutting ferrule both ends are inwards shrunk.

Compared with the prior art, this ball valve sets up spacing structure respectively on valve body neck inboard and valve rod upper portion, only needs carry out corresponding processing through the lathe, guarantees the machining precision to penetrate the valve rod the neck can, it is lower to the assembly required precision between handle, valve rod and the valve body, the assembly of the ball valve of being convenient for.

Drawings

Fig. 1 is a schematic sectional structure view of the ball valve.

Fig. 2 is a schematic view of the ball valve when the abutting surface and the blocking part abut.

In the figure, 1, a valve body; 2. a valve core; 3. a valve stem; 4. a handle; 5. a neck portion; 6. a blocking portion; 7. an abutting surface; 8. a nut; 9. and (4) a ferrule.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the ball valve comprises a valve body 1, a valve core 2 arranged in the valve body 1, a valve rod 3 and a handle 4, wherein a protruding cylindrical neck part 5 is arranged on the valve body 1, the inner end of the valve rod 3 extends into the valve body 1 and is circumferentially fixed with the valve core 2, and the outer end of the valve rod 3 penetrates out of the valve body 1 from the neck part 5 and is connected with the handle 4.

Wherein, neck 5 inner wall has the inward protruding stop part 6, and the upper portion of valve rod 3 is the platykurtic and its lateral part still has the face 7 that supports for plane or curved surface, and when valve rod 3 rotated around self axis circumference, support and lean on face 7 can support with stop part 6 and restrict the circumferential position of valve rod 3

Specifically, the abutting surface 7 is a plane, the blocking portion 6 is flat and is located on the inner side of the top of the neck portion 5, and one side of the blocking portion 6 facing the axis of the neck portion 5 is a plane which can abut against the abutting surface 7.

In this embodiment, the number of the blocking portions 6 is two, and the two blocking portions 6 are symmetrically distributed on two opposite inner walls of the neck portion 5, and the two blocking portions 6 are connected with the neck portion 5 into a whole. The number of the abutting surfaces 7 is four, the abutting surfaces 7 are symmetrically distributed in pairs, two abutting surfaces 7 are close to each other, and the two abutting surfaces 7 can abut against the two blocking parts 6 respectively when the valve rod 3 rotates forwards and reversely.

The ball valve is still including being the nut 8 of the 1 tip of annular cutting ferrule 9 of circle and threaded connection at the valve body, and 1 inboard and the 8 inboard nut of valve body all have the direction inclined plane, and two direction inclined planes set up relatively, and the both ends of cutting ferrule 9 support respectively and lean on two direction inclined planes, and when the screw cap 8 precession, two direction inclined planes move in opposite directions and extrude cutting ferrule 9 so that the inside shrink in cutting ferrule 9 both ends to press from both sides tight pipe fitting.

When this ball valve uses, drive

valve rod

3 and 2 circumferential direction of case through handle 4, set up according to 6 and the position of leaning on face 7 of stop part, can make 3 circumferential direction of valve rod after 90 degrees promptly through leaning on

face

7 and 6 leaning on of stop part to realize the location.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A ball valve comprises a valve body (1), a valve core (2) arranged in the valve body (1), a valve rod (3) and a handle (4), wherein a protruding cylindrical neck (5) is arranged on the valve body (1), the inner end of the valve rod (3) extends into the valve body (1) and is circumferentially fixed with the valve core (2), the outer end of the valve rod (3) penetrates out of the valve body (1) from the neck (5) and is connected with the handle (4), the ball valve is characterized in that the inner wall of the neck (5) is provided with an inward protruding blocking part (6), the upper part of the valve rod (3) is flat, the lateral part of the upper part of the valve rod (3) is also provided with a supporting surface (7) which is a plane or a curved surface, and when the valve rod (3) circumferentially rotates around the axis of the valve rod, the supporting surface (7) can be supported against the blocking part (6) and limit the circumferential position of the valve rod (3), the ball valve is still including being annular cutting ferrule (9) and threaded connection nut (8) at valve body (1) tip, valve body (1) inboard and nut (8) inboard all have the direction inclined plane, the both ends of cutting ferrule (9) are supported respectively and are leaned on two direction inclined planes, and work as when nut (8) precession, two direction inclined planes move in opposite directions and extrude cutting ferrule (9) are so that cutting ferrule (9) both ends shrink inwards.

2. A ball valve according to claim 1, characterized in that said abutment surface (7) is a flat surface, said blocking portion (6) is flat and located inside the top of said neck (5), and the side of said blocking portion (6) facing the axis of said neck (5) is a flat surface capable of abutting against said abutment surface (7).

3. A ball valve according to claim 2, characterized in that said blocking portions (6) are two in number and symmetrically distributed on two opposite inner walls of said neck (5), and said stem (3) has an abutment surface (7) at symmetrical positions on both sides of its upper portion.

4. A ball valve according to claim 3, wherein the number of the abutting surfaces (7) is four, and the abutting surfaces are symmetrically distributed in pairs, two abutting surfaces (7) are adjacently arranged, and the two abutting surfaces (7) can abut against two blocking portions (6) respectively when the valve rod (3) rotates in the circumferential direction.