CN111577922B

CN111577922B - Ball valve

Info

Publication number: CN111577922B
Application number: CN202010417346.7A
Authority: CN
Inventors: 武芳; 李辉; 洪德朋
Original assignee: Xifulong Valve Group Co Ltd
Current assignee: Xifulong Valve Group Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2021-11-09
Anticipated expiration: 2040-05-18
Also published as: CN111577922A

Abstract

The invention provides a ball valve, wherein the ball valve is provided with a mounting groove and a clamping groove; the rotating shaft is provided with a first mounting cavity and a second mounting cavity; the piston rod is arranged in the first mounting cavity in a sliding mode, and a clamping block is arranged on the piston rod; the clamping piece is arranged in the second mounting cavity in a sliding mode, hydraulic oil is arranged between the piston rod and the clamping piece, and the clamping piece can extend out of the second mounting cavity under the pushing of the hydraulic oil and is clamped on the side wall of the clamping groove; the elastic component is arranged in the clamping groove, abuts against the clamping piece and pushes the clamping piece to be separated from the clamping groove; the locking ring can rotate relative to the rotating shaft and is clamped with the clamping block. According to the ball valve, the ball rod can drive the piston rod to slide along the first installation cavity, so that the pressure between the first installation cavity and the second installation cavity is changed, the clamping piece installed in the second installation cavity can extend into or separate from the clamping groove, the ball valve is unlocked and locked, the ball valve is prevented from being opened easily, a medium in the ball valve is prevented from being stolen, and the safety of the ball valve is improved.

Description

Ball valve

Technical Field

The invention relates to the field of pipeline valves, in particular to a ball valve.

Background

The ball valve is suitable for pipelines for conveying various corrosive and non-corrosive fluid media in engineering systems such as petroleum, chemical engineering, hydroelectric power, water supply and drainage, smelting, energy and the like, and is used for regulating and controlling fluid. For management, some ball valves are prohibited from opening and closing at will, such as a pipe main gate, and a locking device is required on the ball valve to prevent others from opening the valve without permission and stealing oil and gas. In order to achieve the anti-theft effect, various anti-theft ball valves appear in the market, and some anti-theft ball valves are complex in structure and inconvenient to use; some anti-theft ball valves have simple structures and poor anti-theft effects.

Disclosure of Invention

In view of the above, there is a need to provide a ball valve, which can prevent the ball valve from being easily opened.

The present invention provides a ball valve, comprising: the valve ball is provided with a mounting groove and a clamping groove, and the mounting groove is communicated with the clamping groove; the rotating shaft is rotatably arranged in the mounting groove and provided with a first mounting cavity and a second mounting cavity which are communicated with each other; the piston rod is arranged in the first installation cavity in a sliding mode, and a clamping block is arranged on the piston rod; the clamping piece is arranged in the second mounting cavity in a sliding mode, hydraulic oil which flows between the first mounting cavity and the second mounting cavity is arranged between the piston rod and the clamping piece, and the clamping piece can stretch out of the second mounting cavity and stretch into the clamping groove under the pushing of the hydraulic oil; the elastic component is arranged in the clamping groove and abuts against the clamping piece, and the elastic component can push the clamping piece to be separated from the clamping groove; the locking ring is rotatably connected to the rotating shaft, and can rotate relative to the rotating shaft and clamp the clamping block.

In one embodiment, the number of the locking rings is four, and four locking rings are stacked along the axial direction of the rotating shaft.

In one embodiment, the locking ring is provided with a clamping groove corresponding to the clamping block, and when the locking ring rotates to match the clamping groove with the clamping block, the piston rod can slide along the vertical direction.

In one embodiment, the elastic component includes an elastic member and a pushing member, one end of the elastic member is connected to the side wall of the slot, the other end of the elastic member is connected to the pushing member, the pushing member abuts against the clamping member, and the elastic member can push the pushing member and drive the clamping member to be separated from the slot.

In one embodiment, the number of the clamping grooves is two, the two clamping grooves are symmetrically arranged relative to the mounting groove, the number of the second mounting cavities is two, the two second mounting cavities are communicated, and each second mounting cavity is provided with a clamping piece.

In one embodiment, the ball valve further comprises a handle fixedly connected to the rotating shaft.

In one embodiment, the ball valve further comprises a ball rod connected to the top of the piston rod, the ball rod is rotatably connected with the piston rod, and the ball rod can drive the piston rod to slide along the first mounting cavity.

In one embodiment, the ball rod is provided with a convex block, the handle is provided with a groove, and when the piston rod is clamped in the clamping groove, the ball rod can clamp the convex block into the groove through rotation, so that the movement of the ball rod along the vertical direction is limited.

The technical scheme has the advantages that: the ball arm can drive the piston rod and slide along first installation cavity, and then changes the pressure between first installation cavity and the second installation cavity to make the joint spare of installing in the second installation cavity can stretch into or break away from the draw-in groove, realize the unblock and the locking of ball valve, and then avoid the ball valve to be opened easily, prevent that the medium in the ball valve is stolen, be favorable to improving the security of ball valve.

Drawings

FIG. 1 is a half sectional view of a ball valve provided in accordance with the present invention;

FIG. 2 is an enlarged view of a portion of the present invention at A in FIG. 1;

FIG. 3 is a semi-sectional view of another operational state of a ball valve according to the present invention;

FIG. 4 is an enlarged view of a portion of the present invention at B of FIG. 3;

fig. 5 is a perspective view of a ball of the ball valve according to the present invention.

The ball valve comprises a ball valve 100, a valve seat 10, a valve ball 20, a mounting groove 21, a clamping groove 22, a valve rod assembly 30, a rotating shaft 31, a first mounting cavity 311, a second mounting cavity 312, a piston rod 32, a clamping block 321, a locking ring 33, a clamping groove 331, a clamping piece 34, an elastic assembly 40, an elastic piece 41, a pushing piece 42, a handle 50, a groove 51, a ball rod 60 and a projection 61.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the present invention discloses a ball valve 100, which includes a valve seat 10, a valve ball 20, a valve stem assembly 30 and an elastic assembly 40, wherein the valve ball 20 is connected to the valve seat 10, the valve stem assembly 30 is connected to the valve ball 20 and the valve seat 10, and the elastic assembly 40 is connected to the ball valve 20; the ball valve 20 is used for opening or closing the ball valve 100, the stem assembly 30 is used for driving the ball valve 20 to rotate, and the elastic assembly 40 is used for assisting the locking or opening of the ball valve 20.

The valve seat 10 has a receiving cavity for mounting the valve ball 20 and a connection port for connecting the valve stem assembly 30.

The ball 20 is placed in the receiving cavity and is rotatably clamped on the side wall of the valve seat 10, so that the ball 20 can rotate relative to the valve seat 10 to open or close the ball valve, and the ball valve 100 can normally work. The valve ball 20 is provided with a mounting groove 21 and a clamping groove 22, the mounting groove 21 is communicated with the clamping groove 22, the mounting groove 21 is used for connecting the valve rod assembly 30, and the clamping groove 22 is used for connecting the elastic assembly 40.

Preferably, the number of the clamping grooves 22 is two, and the two clamping grooves 22 are symmetrically arranged relative to the mounting groove 21; it is understood that in other embodiments, the number of card slots 22 may be set to other values.

The valve rod assembly 30 comprises a rotating shaft 31, a piston rod 32, a locking ring 33 and a clamping piece 34, the rotating shaft 31 is arranged in the mounting groove 21, and the piston rod 32, the locking ring 33 and the clamping piece 34 are all connected with the rotating shaft 31.

Specifically, the rotating shaft 31 is provided with a first mounting cavity 311 and a second mounting cavity 312, the first mounting cavity 311 is communicated with the second mounting cavity 312, the first mounting cavity 311 is used for mounting the piston rod 32, and the second mounting cavity 312 is used for mounting the clamping member 34. In the present embodiment, the first mounting cavity 311 and the second mounting cavity 312 are both cylindrical; it is understood that, in other embodiments, the first mounting cavity 311 and the second mounting cavity 312 may have other shapes such as a prism shape.

Piston rod 32 slides and sets up in first installation cavity 311, is equipped with fixture block 321 on the piston rod 32, and the fixture block is used for joint lock ring 33, and joint spare 34 slides and sets up in second installation cavity 312, and it has hydraulic oil to fill between piston rod 32 and the joint spare 34, and hydraulic oil can flow between first installation cavity 311 and second installation cavity 312.

The number of the locking ring 33 is at least one, the locking ring 33 is rotatably connected to the rotating shaft 31, the locking ring 33 can rotate relative to the rotating shaft 31 and is clamped with the clamping block 321, and therefore the piston rod 32 is limited to move in the vertical direction. In the present embodiment, the locking ring 33 is provided with a locking groove 331 corresponding to the latch 321, and when the locking ring 33 is rotated to match the locking groove 331 with the latch 321, the piston rod 32 can slide in the vertical direction.

In the present embodiment, the number of the latch blocks 321 is four, the number of the lock rings 33 is also four, and the four lock rings 33 can be respectively clamped with one latch block 321, so as to ensure that the lock rings 33 can be stably clamped with the piston rod 32; it is understood that the number of the latch 321 and the lock ring 33 may be other values in other embodiments.

Preferably, the elastic assembly 40 includes an elastic member 41 and a pushing member 42, one end of the elastic member 41 is connected to the side wall of the card slot 22, the other end of the elastic member 41 is connected to the pushing member 42, the pushing member 42 abuts against the card member 34, and the elastic member 41 can push the pushing member 42 and drive the card member 34 to separate from the card slot 22.

Preferably, the number of the second mounting cavities 312, the number of the clamping members 34 and the number of the elastic components 40 are the same, in this embodiment, the number of the second mounting cavities 312 is two corresponding to two clamping grooves 22, each second mounting cavity 312 is provided with a clamping member 34, and the two clamping members 34 can respectively extend into or separate from two different clamping grooves 22; it is understood that in other embodiments, the number of the second mounting cavity 312, the snap-in member 34 and the elastic member 40 may have other values according to different working conditions.

Preferably, the ball valve 100 further includes a handle 50 and a ball rod 60, the handle 50 is fixedly connected to the rotating shaft 31 so as to facilitate a user to rotate the rotating shaft 31 to open or lock the ball valve 100, the ball rod 60 is connected to the top of the piston rod 32 and is rotatably connected to the piston rod 32, and the ball rod 60 can drive the piston rod 32 to slide in a vertical direction so as to facilitate a sliding of the piston rod 32 relative to the rotating shaft 31.

Preferably, the shaft 60 is provided with a protrusion 61, the handle 50 is provided with a groove 51, and when the piston rod 32 is clamped in the clamping groove 22, the shaft 60 can clamp the protrusion 61 into the groove 51 through rotation, so as to limit the shaft 60 to move in the vertical direction. It can be understood that, by providing the escape groove 52 corresponding to the projection 61 on the handle 50, when the club 60 moves up and down, the projection 61 is slidably fitted in the escape groove 52, and when it is necessary to restrict the movement of the club 60 in the vertical direction, the projection 61 is downwardly caught in the recess 51, and the projection 61 is misaligned with the escape groove 51.

The working mode of the invention is as follows: as shown in fig. 1 and fig. 2, the locking ring 33 is rotated to make the clamping groove 331 on the locking ring 33 correspond to the clamping block 321 on the piston rod 32, and at this time, the ball rod 60 is pressed to make the piston rod 32 push the hydraulic oil, and further push the clamping member 34, so that the clamping member 34 overcomes the elastic action of the elastic member 41 and extends into the clamping groove 22, and thus the rotating shaft 31 can drive the valve ball 20 to rotate through the clamping member 34 when rotating, and further the adjustment of the flow passage of the ball valve 100 is realized, and at this time, the ball rod 60 is rotated to make the bump 61 clamped into the groove 51, thereby fixing the piston rod;

the handle 50 is rotated reversely, the ball valve 100 is closed, then the ball rod 60 is rotated, the lug 61 is separated from the groove 51, the piston rod 32 is pulled upwards, so that hydraulic oil in the second mounting cavity 312 flows back to the first mounting cavity 311, the clamping piece 34 is retracted into the second mounting cavity 312 and separated from the clamping groove 22, the rotating shaft 31 can freely rotate relative to the valve ball 20, at the moment, the locking ring 33 is rotated, the position of the locking ring 33 is disturbed, and locking of the ball valve 100 is achieved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A ball valve, includes the valve seat, its characterized in that still includes:

the valve ball is provided with a mounting groove and a clamping groove, and the mounting groove is communicated with the clamping groove;

the rotating shaft is rotatably arranged in the mounting groove and provided with a first mounting cavity and a second mounting cavity which are communicated with each other;

the piston rod is arranged in the first installation cavity in a sliding mode, and a clamping block is arranged on the piston rod;

the clamping piece is arranged in the second mounting cavity in a sliding mode, hydraulic oil which flows between the first mounting cavity and the second mounting cavity is arranged between the piston rod and the clamping piece, and the clamping piece can stretch out of the second mounting cavity and stretch into the clamping groove under the pushing of the hydraulic oil;

the elastic component is arranged in the clamping groove and abuts against the clamping piece, and the elastic component can push the clamping piece to be separated from the clamping groove; the elastic component comprises an elastic piece and a pushing piece, one end of the elastic piece is connected to the side wall of the clamping groove, the other end of the elastic piece is connected to the pushing piece, the pushing piece abuts against the clamping piece, and the elastic piece can push the pushing piece and drive the clamping piece to be separated from the clamping groove; the number of the clamping grooves is two, the two clamping grooves are symmetrically arranged relative to the mounting groove, the number of the second mounting cavities is two, the two second mounting cavities are communicated, and each second mounting cavity is provided with a clamping piece;

the locking ring is rotatably connected to the rotating shaft, and can rotate relative to the rotating shaft and clamp the clamping block; the locking ring is provided with a clamping groove corresponding to the clamping block, and when the locking ring rotates to match the clamping groove with the clamping block, the piston rod can slide along the vertical direction.

2. The ball valve according to claim 1, wherein the number of said locking rings is four, and four of said locking rings are arranged in a stacked manner in an axial direction of said rotating shaft.

3. The ball valve of claim 1, further comprising a handle fixedly attached to the shaft.

4. The ball valve of claim 3, further comprising a ball shaft attached to a top of the piston rod, the ball shaft being rotatably connected to the piston rod, the ball shaft being capable of sliding the piston rod along the first mounting cavity.

5. The ball valve of claim 4, wherein the shaft is provided with a protrusion, the handle is provided with a groove, and when the piston rod is clamped in the clamping groove, the shaft can clamp the protrusion into the groove through rotation, so that the shaft is limited to move in the vertical direction.