CN219327806U

CN219327806U - Low-torque pneumatic ball valve

Info

Publication number: CN219327806U
Application number: CN202320384873.1U
Authority: CN
Inventors: 张武; 许佃明; 丁庆刚; 张其峰; 林强
Original assignee: Zhejiang Huaershi Automatic Control Instrument Valve Co ltd
Current assignee: Zhejiang Huaershi Automatic Control Instrument Valve Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-07-11
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a low-torque pneumatic ball valve, which comprises a valve body and a valve cover arranged at the upper end of the valve body, wherein a flow channel for fluid medium to circulate is formed in the valve body, a valve rod penetrating through the flow channel is arranged on the valve cover, a ball body synchronously rotating along with the valve rod is arranged at one end of the valve rod positioned at the flow channel, a valve seat matched with the ball body to realize sealing is arranged in the valve body, a pneumatic actuating mechanism is arranged at the top of the valve rod, a supporting component is arranged at the bottom of the ball body, the supporting component comprises a fixed sleeve, a rotating shaft, a guide rod, a steel ball and an elastic ball, one end of the rotating shaft is rotationally connected in a fixed cavity, the other single part of the rotating shaft extends to the inner cavity of the valve body and corresponds to the position of the ball body, a plurality of guide rods are obliquely arranged outside the rotating shaft, the steel ball is arranged at the outer end of the guide rod and tangent to the lower end surface of the ball body, and the elastic ball is arranged at the center of one end of the rotating shaft positioned in the valve body; the ball body has small rotation torque and stable and reliable rotation.

Description

Low-torque pneumatic ball valve

Technical Field

The utility model relates to the technical field of valves, in particular to a low-torque pneumatic ball valve.

Background

Currently, ball valves are widely applied to various pipelines, each ball valve comprises a manual actuator and a valve body, a valve rod and a ball center which is in linkage fit with the valve rod are arranged in the valve body, the manual actuator is in linkage connection with the valve rod, and an inlet channel for medium to enter and an outlet channel for medium to flow out are arranged in the valve body.

Patent CN203757046U discloses a ball valve, is equipped with the valve pocket in the valve pocket, is equipped with the case in the valve pocket, is equipped with the valve rod on the case, is equipped with first pipeline and second pipeline in the valve pocket, the lower extreme of valve rod is equipped with the guide block that drives the case pivoted, be equipped with in the valve pocket and supply guide block circumferential direction's valve neck, be equipped with on the valve neck inner circumference and be used for prescribing a limit to guide block circumferential direction and rotate to extreme position's first lug and second lug.

Problems in the above patents: the existing ball valve is characterized in that the valve seat is in sealing fit with the ball body, the ball body is fixed by simply being matched with the valve rod and the valve seat, the ball body is downwards acted on the valve rod by gravity, the strength of connection between the valve rod and the ball body needs to be guaranteed, the precision requirement on the valve rod is high, in addition, the ball body is downwards pressed against the valve seat by gravity, the ball body rotation torque is large, and the ball valve structure is optimized based on the problem.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings of the prior art and provides a low-torque pneumatic ball valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a low-torque pneumatic ball valve, includes the valve body and sets up in the valve gap of valve body upper end, set up the runner that supplies the fluid medium to circulate in the valve body, install the valve rod that wears to establish to the runner on the valve gap, the spheroid that rotates in step along with the valve rod is installed to the one end that the valve rod is located the runner, be equipped with the disk seat that the cooperation spheroid realized sealedly in the valve body, pneumatic actuating mechanism is installed at the valve rod top, the spheroid bottom is provided with supporting component, supporting component includes fixed cover, pivot, guide bar, steel ball and elastic ball, fixed cover welds in the valve body bottom, be provided with fixed chamber in the fixed cover, pivot one end rotates to be connected in fixed intracavity, another list of pivot extends to the valve body inner chamber and corresponds with the spheroid position, a plurality of guide bars are installed to the pivot outside the slope, the steel ball sets up in the guide bar outer end and tangent with the spheroid lower terminal surface, the elastic ball sets up in the pivot one end center department that is located the valve body.

As a preferable technical scheme of the utility model, the guide rods are distributed along the circumferential direction of the rotating shaft, and reinforcing rods are welded between adjacent guide rods.

As a preferable technical scheme of the utility model, the outer end of the guide rod is provided with a rotating pin, and the steel ball is rotatably connected with the rotating pin.

As a preferable technical scheme of the utility model, a first ball bearing and a second ball bearing are arranged in the fixed sleeve, and the inner walls of the first ball bearing and the second ball bearing are respectively connected with the outer wall of the rotating shaft in a rotating way.

As a preferable embodiment of the present utility model, a disc spring is disposed between the first ball bearing and the second ball bearing.

As a preferable technical scheme of the utility model, a plurality of connecting ribs which are obliquely arranged are arranged between the outer wall of the fixed sleeve and the valve body.

As a preferable technical scheme of the utility model, the valve cover is provided with a mounting hole for the valve rod to pass through, and a antifriction pad, an O-shaped ring, a filler gland and a positioning gasket are sequentially arranged between the mounting hole and the valve rod from bottom to top.

In summary, the beneficial effects of the utility model are as follows: through setting up supporting component, can support spheroid lower extreme part, compare in the tradition and cooperate fixed mode through valve rod and both sides disk seat, this application has adopted four positions about, and the spheroid rotates the in-process, and the steel ball of bottom guide bar is tangent all the time with the spheroid and support it, and the spheroid rotates the in-process lighter, and the moment of torsion is little, and is less to the burden of valve rod simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the structure of the support assembly in this embodiment;

fig. 4 is an enlarged view of a portion B of fig. 1.

Reference numerals: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a sphere; 5. a valve seat; 6. a support assembly; 7. a fixed sleeve; 8. a rotating shaft; 9. a guide rod; 10. steel balls; 11. a spring ball; 12. a reinforcing rod; 13. a rotation pin; 14. a first ball bearing; 15. a second ball bearing; 16. a disc spring; 17. a connecting rib; 18. a mounting hole; 19. an antifriction pad; 20. an O-ring; 21. a filler; 22. a packing gland; 23. positioning the gasket.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Specific embodiments of the present utility model are described below with reference to the accompanying drawings.

The low-torque pneumatic ball valve comprises a valve body 1 and a valve cover 2 arranged at the upper end of the valve body 1, wherein a flow channel for fluid medium circulation is formed in the valve body 1, a valve rod 3 penetrating through the flow channel is arranged on the valve cover 2, a ball body 4 which rotates synchronously with the valve rod 3 is arranged at one end of the valve rod 3, a valve seat 5 matched with the ball body 4 to realize sealing is arranged in the valve body 1, a pneumatic actuating mechanism is arranged at the top of the valve rod 3, a supporting component 6 is arranged at the bottom of the ball body 4, the supporting component 6 comprises a fixing sleeve 7, a rotating shaft 8, a guide rod 9, a steel ball 10 and an elastic ball 11, the fixing sleeve 7 is welded at the bottom of the valve body 1, a fixing cavity is arranged in the fixing sleeve 7, one end of the rotating shaft 8 is rotatably connected in the fixing cavity, the other single rotating shaft 8 extends to the inner cavity of the valve body 1 and corresponds to the position of the ball body 4, a plurality of guide rods 9 are obliquely arranged outside the rotating shaft 8, the steel balls 10 are arranged at the outer ends of the guide rods 9, the steel balls 10 are tangential to the lower end faces of the ball body 4, and the elastic ball 11 is arranged at the center of one end of the rotating shaft 8 in the valve body 1.

Through setting up supporting component 6, can support spheroid 4 lower extreme part, compare in the tradition and cooperate fixed mode through valve rod 3 and both sides disk seat 5, this application has adopted four positions about, and the spheroid 4 rotates the in-process, and the steel ball 10 of bottom guide bar 9 is tangent with spheroid 4 and supports it, and spheroid 4 rotates the in-process moment of torsion less, and is lighter, less to the burden of valve rod 3.

The guide rods 9 are distributed along the circumferential direction of the rotating shaft 8, reinforcing rods 12 are welded between adjacent guide rods 9, strength is improved, supporting strength of the ball 4 is guaranteed, and force applied to the valve seat 5 by the ball 4 is shared.

The outer end of the guide rod 9 is provided with a rotating pin 13, the steel ball 10 is rotationally connected to the rotating pin 13, and the steel ball 10 can rotate after the ball 4 contacts with the steel ball 10, so that the torque of the ball 4 is reduced.

The fixed sleeve 7 is internally provided with a first ball bearing 14 and a second ball bearing 15, the inner walls of the first ball bearing 14 and the second ball bearing 15 are respectively connected with the outer wall of the rotating shaft 8 in a rotating way, and a disc spring 16 is arranged between the first ball bearing 14 and the second ball bearing 15.

A plurality of connecting ribs 17 which are obliquely arranged are arranged between the outer wall of the fixed sleeve 7 and the valve body 1, so that the connection strength between the fixed sleeve 7 and the valve body 1 is improved.

The valve cover 2 is provided with a mounting hole 18 for the valve rod 3 to pass through, and an antifriction pad 19, an O-shaped ring 20, a packing 21 gland and a positioning gasket 23 are sequentially arranged between the mounting hole 18 and the valve rod 3 from bottom to top.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing description as preferred embodiments of the utility model, but rather that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a low-torque pneumatic ball valve, includes the valve body and sets up in the valve gap of valve body upper end, set up the runner that supplies the fluid medium to circulate in the valve body, install the valve rod that wears to establish to the runner on the valve gap, the spheroid along with the synchronous pivoted of valve rod is installed to the one end that the valve rod is located the runner, be equipped with the valve seat that the cooperation spheroid realized sealedly in the valve body, pneumatic actuating mechanism is installed at the valve rod top, its characterized in that: the utility model discloses a ball valve, including the ball, the ball is provided with the ball bottom, the ball bottom is provided with supporting component, supporting component includes fixed cover, pivot, guide bar, steel ball and elastic ball, fixed cover welds in the valve body bottom, be provided with fixed chamber in the fixed cover, pivot one end rotates to be connected in fixed intracavity, another list of pivot extends to the valve body inner chamber and corresponds with the ball position, a plurality of guide bars are installed to the pivot camber angle, the steel ball sets up in guide bar outer end and steel ball and ball lower extreme surface tangent, the elastic ball sets up in the one end center department that the pivot is located the valve body.

2. The low torque pneumatic ball valve of claim 1 wherein: the guide rods are distributed along the circumferential direction of the rotating shaft, and reinforcing rods are welded between adjacent guide rods.

3. The low torque pneumatic ball valve of claim 1 wherein: the outer end of the guide rod is provided with a rotating pin, and the steel ball is rotationally connected to the rotating pin.

4. The low torque pneumatic ball valve of claim 1 wherein: the fixed sleeve is internally provided with a first ball bearing and a second ball bearing, and the inner walls of the first ball bearing and the second ball bearing are respectively connected with the outer wall of the rotating shaft in a rotating way.

5. The low torque pneumatic ball valve of claim 4 wherein: a disc spring is arranged between the first ball bearing and the second ball bearing.

6. The low torque pneumatic ball valve of claim 1 wherein: a plurality of connecting ribs which are obliquely arranged are arranged between the outer wall of the fixed sleeve and the valve body.

7. The low torque pneumatic ball valve of claim 1 wherein: the valve cover is provided with a mounting hole for a valve rod to pass through, and an antifriction pad, an O-shaped ring, a filler gland and a positioning gasket are sequentially arranged between the mounting hole and the valve rod from bottom to top.