CN109058504B

CN109058504B - V-shaped ball valve for regulating flow by buffering medium

Info

Publication number: CN109058504B
Application number: CN201811185376.9A
Authority: CN
Inventors: 孙宝秋; 程国海; 陈丽川; 许一攀; 孙如
Original assignee: Tehong Valve Co ltd
Current assignee: Tehong Valve Co ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2020-06-02
Anticipated expiration: 2038-10-11
Also published as: CN109058504A

Abstract

The invention relates to the technical field of engineering equipment, in particular to a V-shaped ball valve for regulating flow of a buffer medium. The valve is opened and closed in-process owing to there is the existence of buffering filter screen, makes the whole moment of opening and close of valve light, the valve operation is smooth-going when the valve half-open state, can not appear and pause and hinder and shake the problem, can not lead to the direct impact V type spheroid of large tracts of land medium and make V type spheroid atress uneven phenomenon such as deformation appear, and V type spheroid is opening and close the in-process and is having regulation and shearing action equally.

Description

V-shaped ball valve for regulating flow by buffering medium

Technical Field

The invention relates to the technical field of engineering equipment, in particular to a V-shaped ball valve for regulating flow by using a buffer medium.

Background

In a modern industrial automatic control system, a regulating valve is an indispensable link, and a V-shaped ball valve is rapidly developed into a main valve along with rapid development of science and technology and continuous improvement of a production process and a product structure. In China, the V-shaped ball valve is widely applied to common working media such as water, solvents, acid, natural gas and the like, is also suitable for media with severe working conditions such as oxygen, hydrogen peroxide, methane, ethylene and the like, and is widely applied to various industries. In the ball structure of the existing V-ball, when the closing pressure difference is large, the ball structure has the deformation tendency, so the pound level is limited. And the acting force of the medium in the opening process increases the friction force between the ball body and the valve seat, increases the opening and closing torque and the like. To this end, we propose a buffering medium regulating flow V-ball valve.

Disclosure of Invention

The invention aims to provide a V-shaped ball valve for regulating flow by using a buffer medium, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a V-shaped ball valve for regulating flow by buffering media comprises a valve body, wherein a fluid channel is arranged in an inner cavity of the valve body and comprises an inlet channel and an outlet channel, a stuffing box is arranged in the middle of the upper end of the valve body, stuffing is arranged in the stuffing box, a stuffing cover is arranged at the upper end of the stuffing and is fixedly connected with the valve body through a regulating bolt, a V-shaped ball body positioned between the inlet channel and the outlet channel is arranged in the middle of the inner cavity of the valve body, a valve seat is arranged at one end, close to the V-shaped ball body, in the outlet channel, a side end face, far away from the V-shaped ball body, of the valve seat is connected with a plurality of springs;

one side of the upper end of the V-shaped ball body is connected with the lower end of the side wall of the upper valve rod, the upper end of the upper valve rod passes through the stuffing box to reach the external connecting hand wheel of the valve body, one side of the lower end of the V-shaped ball body is connected with the upper end of the side wall of the lower valve rod, the lower end of the upper valve rod and the upper end of the lower valve rod are connected with two ends of the buffer filter screen, a lower valve rod shaft sleeve is sleeved on the lower valve rod and is connected with the bottom wall of the inner cavity of the valve body, the middle part of the lower end of the valve body is also provided with a lower gland, the upper end and the lower end of the buffering filter screen are connected with a V-shaped surface at the inner side of the V-shaped ball body, a plurality of main flow channels which are consistent with the flow direction of the V-shaped inner side surface on the V-shaped ball body are arranged on the buffer filter screen, still seted up a plurality of diffluence orifices on the buffering filter screen, the diffluence orifice is vertical distribution with the mainstream passageway, and is a plurality of the diffluence orifice all is matrix distribution with a plurality of mainstream passageway, and the cross-sectional area of mainstream passageway is far greater than the cross-sectional area of diffluence orifice.

Preferably, one end of the valve seat, which is close to the V-shaped ball body, is provided with a conical sealing surface which forms a linear seal with the spherical sealing surface of the V-shaped ball body.

Preferably, a ring groove is formed in the circumferential direction of the outer side wall of the valve seat, a valve seat sealing ring is fixedly sleeved in the ring groove, and the circumferential direction of the outer side wall of the valve seat sealing ring is tightly attached to the outlet channel.

Preferably, one section of the upper valve rod, which is positioned in the stuffing box, is sleeved with an antifriction pad, and the antifriction pad is positioned at the lower end of the stuffing.

Preferably, the material of the filler is made of PTFE material.

Compared with the prior art, the invention has the beneficial effects that: the V-shaped ball valve with the flow regulated by the buffer medium has the advantages that the whole opening and closing moment of the valve is light due to the existence of the buffer filter screen in the opening and closing process of the valve, the valve runs smoothly in a half-open state, the problems of jerking and vibration cannot occur, large-area medium cannot directly impact the V-shaped ball body to cause the V-shaped ball body to deform due to uneven stress, and the like, the V-shaped ball body also has the functions of regulation and shearing in the opening and closing process, the service life of equipment is prolonged, and the V-shaped ball valve has prominent substantive features and remarkable progress.

Drawings

FIG. 1 is a schematic perspective view of a V-shaped ball valve with flow regulated by a buffering medium according to the present invention;

FIG. 2 is a schematic cross-sectional view of a closed state of a V-shaped ball valve for regulating flow rate by a buffer medium according to the present invention;

FIG. 3 is a schematic diagram of a buffer filter screen of a V-shaped ball valve for regulating flow rate by using a buffer medium according to the present invention;

FIG. 4 is a schematic top view of a closed state of a flow-regulated V-ball valve with a buffering medium according to the present invention;

FIG. 5 is a schematic top view of a buffering medium flow-regulating V-shaped ball valve according to the present invention;

fig. 6 is a schematic top view of a fully opened V-shaped ball valve for regulating flow rate of a buffering medium according to the present invention.

In the figure: the valve comprises a valve body 1, a buffer filter screen 2, a lower pressing cover 3, a valve seat 4, a spring 5, a valve seat pre-tightening ring 6, a valve seat sealing ring 7, a V-shaped ball 8, an upper valve rod 9, packing 10, an adjusting bolt 11, a packing gland 12, a lower valve rod 13, a lower valve rod sealing ring 14, a lower valve rod shaft sleeve 15, an antifriction pad 16, a main flow channel 17 and a flow dividing hole 18.

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.

Referring to fig. 1-6, the present invention provides a technical solution:

a V-shaped ball valve for regulating flow by buffering media comprises a valve body 1, wherein a fluid channel is arranged in an inner cavity of the valve body 1, the fluid channel comprises an inlet channel and an outlet channel, a stuffing box is arranged in the middle of the upper end of the valve body 1, stuffing 10 is arranged in the stuffing box, the stuffing 10 is made of PTFE (polytetrafluoroethylene) materials, a stuffing cover 12 is arranged at the upper end of the stuffing 10, the stuffing cover 12 is fixedly connected with the valve body 1 through an adjusting bolt 11, a V-shaped ball body 8 positioned between the inlet channel and the outlet channel is arranged in the middle of the inner cavity of the valve body 1, a valve seat 4 is arranged at one end, close to the V-shaped ball body 8, in the outlet channel, a conical sealing surface which forms a line seal with the spherical sealing surface of the V-shaped ball body 8 is arranged at one end of the valve seat 4, far away from the V-shaped ball body 8, a plurality of springs 5 are connected with, the annular groove has been seted up to disk seat 4's lateral wall circumference, and fixed cover has connect disk seat sealing washer 7 in the annular groove, and disk seat sealing washer 7's lateral wall circumference closely laminates with outlet channel, promotes sealing performance.

One side of the upper end of the V-shaped sphere 8 is connected with the lower end of the side wall of the upper valve rod 9, the upper end of the upper valve rod 9 passes through the stuffing box to reach the external connecting hand wheel (the hand wheel is not shown in the figure) of the valve body 1, one section of the upper valve rod 9 positioned in the stuffing box is sleeved with an antifriction pad 16, the antifriction pad 16 is positioned at the lower end of the stuffing 10 to reduce abrasion, one side of the lower end of the V-shaped sphere 8 is connected with the upper end of the side wall of the lower valve rod 13, the lower end of the upper valve rod 9 and the upper end of the lower valve rod 13 are connected with two ends of the buffer filter screen 2, the upper end and the lower end of the buffer filter screen 2 are connected with the V-shaped surface inside the V-shaped sphere 8 to increase the structural stability, a plurality of main flow channels 17 which are consistent with the flow direction of the V-shaped inner side surface on the V-shaped sphere 8 are arranged on the, the plurality of branch flow holes 18 and the plurality of main flow channels 17 are distributed in a matrix, and the cross-sectional area of the main flow channels 17 is far larger than that of the branch flow holes 18. The reposition of redundant personnel of fluid medium is realized with reposition of redundant personnel hole 18 to mainstream passageway 17, prevents that fluid medium's impact force from influencing V type spheroid 8, causes V type spheroid 8 to warp to influence the sealed effect of valve, cup jointed lower valve rod axle sleeve 15 on the lower valve rod 13, lower valve rod axle sleeve 15 is connected with the inner chamber diapire of valve body 1, and gland 3 under still installing is held in the middle part of the lower extreme of valve body 1.

The components are assembled to form the buffering medium flow regulating V-shaped ball valve, when the valve is in a closed state, a main flow channel 17 of a buffering filter screen 2 and a pipeline are in a vertical position state, an inlet medium can be dispersed through a plurality of shunting holes 18 on the buffering filter screen 2, a large-area medium cannot be formed and is directly pushed to a V-shaped ball 8, the V-shaped ball 8 is subjected to overlarge medium pressure, the V-shaped ball 8 has a deformation tendency problem, the buffering filter screen 2 rotates synchronously with the V-shaped ball 8, when the valve is opened, the opening torque cannot be overlarge due to medium impact through the medium dispersion effect of the plurality of shunting holes 18 on the buffering filter screen 2, when the part of the valve to be opened needs to regulate the flow, the main flow channel 17 of the buffering filter screen 2 is in a state of different angle positions with the pipeline, and the medium flow direction is changed through the shunting holes 18 and the main flow channel 17 on the buffering filter, the medium can directly flow out through the open runner, can not cause V type spheroid 8 to need to open when half for a long time at flow control, and partly spheroid leads to the fact the atress inhomogeneous to cause because the medium effect is too big opens the process unsmooth, pause and frustrate, valve vibrations, the deformation problem that 8 partial edge pressure-bearing of V type spheroid caused excessively. When the valve reaches the full-open position, the center of the main flow channel 17 of the buffer filter screen 2 is in a state of being matched with the pipeline, and the problems of flow speed, flow and the like of the medium cannot be influenced. When the valve is closed, the V-shaped ball body 8 rotates to close the process, the buffer filter screen 2 reduces the problems of large opening and closing moment, pause and pause, vibration and large deformation of edge pressure of the ball body caused by the fact that the medium directly impacts the ball body through guiding the flow direction of the medium, and the buffer filter screen 2 plays the same role as the valve in the opening process. The V-shaped ball valve for regulating the flow of the buffering medium has the advantages that the buffering filter screen 2 exists in the opening and closing process of the valve, so that the whole opening and closing moment of the valve is light, the valve runs smoothly in a half-open state, the problems of pause and vibration cannot occur, and the phenomenon that the large-area medium directly impacts the V-shaped ball body 8 to enable the ball body to be deformed unevenly under stress cannot be caused. The V-shaped ball 8 also has the functions of adjusting and shearing in the opening and closing process, the service life of the equipment is prolonged, and the invention has prominent substantive features and remarkable progress.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a V type ball valve of flow is adjusted to buffering medium, including valve body (1), valve body (1) inner chamber is equipped with fluid passage, this fluid passage includes inlet channel and outlet passage, the upper end middle part of valve body (1) is equipped with the stuffing box, be equipped with filler (10) in the stuffing box, the upper end of filler (10) is equipped with gland (12), gland (12) pass through adjusting bolt (11) and valve body (1) fixed connection, V type spheroid (8) that are located between inlet channel and outlet passage are installed to the inner chamber middle part of valve body (1), the one end that is close to V type spheroid (8) in the outlet passage is installed valve seat (4), the one side terminal surface that V type spheroid (8) were kept away from to valve seat (4) is connected with a plurality of springs (5), a plurality of springs (5) are connected with the valve seat pretension ring (6) that outlet;

the method is characterized in that: the upper end of the V-shaped ball body (8) is connected with the lower end of the side wall of the upper valve rod (9), the upper end of the upper valve rod (9) passes through the stuffing box to reach the external connecting hand wheel of the valve body (1), the lower end of the V-shaped ball body (8) is connected with the upper end of the side wall of the lower valve rod (13), the lower end of the upper valve rod (9) and the upper end of the lower valve rod (13) are connected with the two ends of the buffer filter screen (2), the lower valve rod shaft sleeve (15) is sleeved on the lower valve rod (13), the lower valve rod shaft sleeve (15) is connected with the bottom wall of the inner cavity of the valve body (1), the lower gland (3) is further installed in the middle of the lower end of the valve body (1), the upper end and the lower end of the buffer filter screen (2) are connected with the V-shaped surface on the inner side of the V-shaped ball body (8), the, still seted up a plurality of reposition of redundant personnel holes (18) on buffer filter screen (2), reposition of redundant personnel hole (18) are vertical distribution with mainstream passageway (17), and are a plurality of reposition of redundant personnel hole (18) all are matrix distribution with a plurality of mainstream passageway (17), and the cross-sectional area of mainstream passageway (17) is far greater than the cross-sectional area of reposition of redundant personnel hole (18).

2. A cushioning media modulating flow V-ball valve as set forth in claim 1 wherein: one end of the valve seat (4) close to the V-shaped ball body (8) is provided with a conical sealing surface which forms a line seal with the spherical sealing surface of the V-shaped ball body (8).

3. A cushioning media modulating flow V-ball valve as set forth in claim 1 wherein: the outer side wall circumference of disk seat (4) has seted up the ring channel, and disk seat sealing washer (7) have been cup jointed to the ring channel internal fixation, and the outer side wall circumference of disk seat sealing washer (7) closely laminates with outlet channel.

4. A cushioning media modulating flow V-ball valve as set forth in claim 1 wherein: and one section of the upper valve rod (9) positioned in the packing box is sleeved with an antifriction pad (16), and the antifriction pad (16) is positioned at the lower end of the packing (10).

5. A cushioning media modulating flow V-ball valve as set forth in claim 1 wherein: the filler (10) is made of PTFE material.