CN212480210U

CN212480210U - Semi-ball valve

Info

Publication number: CN212480210U
Application number: CN202021203240.9U
Authority: CN
Inventors: 朱义乐; 吴振飞; 王国君; 陈涛; 刘欣
Original assignee: Zhejiang Chengxin Pharm & Chem Equipment Co ltd
Current assignee: Zhejiang Chengxin Pharm & Chem Equipment Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-05
Anticipated expiration: 2030-06-24

Abstract

The utility model provides a half-ball valve belongs to valve technical field. It has solved the problem of how to prevent the influence of solid particle impurity to the semi-globe valve closed effect among the prior art. The utility model provides a hemisphere valve, includes valve rod, lower extreme open-ended last valve body, case and the equal open-ended lower valve body of last lower extreme, go up valve body and lower valve body fixed connection, the case is located between valve body and the lower valve body, the valve rod can drive the case and rotate, go up and be equipped with the first air cock of a plurality of between valve body and the lower valve body, the first air cock of a plurality of is the circumferencial direction setting, the end of giving vent to anger of first air cock is relative with the case, and this hemisphere valve still includes the ring pipe, be equipped with the air inlet on the ring pipe, the inlet end of the first air cock of a plurality of all links to each other. The hemispherical valve can prevent solid particle impurities from being stuck on the valve core, and avoids the influence on the sealing effect of the hemispherical valve due to the fact that a gap is formed at the joint of the valve core and the base plate when the valve core rotates to close the hemispherical valve.

Description

Semi-ball valve

Technical Field

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

Background

The semi-ball valve is a new type valve, and is mainly used for cutting off, distributing and changing flow direction of medium in pipeline. The semi-ball valve has the advantages of small fluid resistance, convenient operation, quick opening and closing, convenient maintenance and the like, and is widely applied to ideal transmission equipment for water, steam, sewage, petrochemical industry, natural gas, solution, ore pulp and other two-phase media, dust gas and the like.

And the valve rod is driven to drive the hemispherical valve core to rotate, and the valve core rotates around the central line of the valve body to open or close the hemispherical valve. The hemisphere valve can have better cutting off effect to liquid, but when having solid particle impurity in the liquid, lead to solid particle impurity jamming easily between case and valve body to influence hemisphere valve's sealed effect.

In order to solve the problems, the conventional method is to disassemble the half-ball valve and then wash out solid impurities clamped between the half-ball valve core and the valve body, but the method is troublesome to install and disassemble. Therefore, how to prevent the solid particle impurities from influencing the closing effect of the half-ball valve is a problem to be solved by the technical personnel in the field.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a hemisphere valve, the utility model aims to solve the technical problem be: how to prevent the influence of solid particle impurities on the closing effect of the half-ball valve.

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

the utility model provides a hemisphere valve, includes valve rod, lower extreme open-ended last valve body, case and the equal open-ended lower valve body of last lower extreme, go up valve body and lower valve body fixed connection, the case is located between valve body and the lower valve body, the valve rod can drive the case and rotate, go up and be equipped with the first air cock of a plurality of between valve body and the lower valve body, the first air cock of a plurality of is the circumferencial direction setting, the end of giving vent to anger of first air cock is relative with the case, and this hemisphere valve still includes the ring pipe, be equipped with the air inlet on the ring pipe, the inlet end of the first air cock of a plurality of all links to each other.

The valve rod rotates to drive the valve core to rotate, so that the opening or closing of the hemispherical valve is realized; when the material in the upper valve body is liquid containing fixed particles, liquid medium which is not dissolved in the fixed particles and the liquid is introduced from the air inlet, so that the liquid medium washes the outer wall surface of the valve core, and the solid particles are prevented from being adhered to the valve core;

gas or liquid medium can directly get into the first air cock of a plurality of from the air inlet and supply with the annular tube, and the solid particle impurity direct washout of the outer wall surface of valve core can be directly washed out to a plurality of first air cock, has improved the efficiency of washout.

In the above-mentioned hemisphere valve, the ring pipe is the ring pipe that has an open-ended, ring pipe opening part both ends are all sealed, be equipped with the second air cock that a plurality of circumference set up on the ring pipe, a plurality of second air cock is relative and links to each other with the first air cock one-to-one of a plurality of. The gas or liquid medium flows into the annular pipe quickly, then flows into the gas inlet ends of the second gas nozzles from the first gas nozzles, and flows into the outer wall surface of the flushing valve core from the inner ends of the second gas nozzles.

In the above-mentioned half-ball valve, the annular pipe includes first arc pipe, second arc pipe and three-way pipe, first arc pipe and second arc pipe are one end opening, and the other end is sealed, the open end of first arc pipe and the open end of second arc pipe all link to each other with the three-way pipe, all be equipped with a plurality of second air cock on first arc pipe and the second arc pipe. The annular pipe is divided into three sections, so that the annular pipe is more convenient to mount and dismount.

In the hemispherical valve, a base plate is arranged between the upper valve body and the lower valve body, a plurality of vent holes are formed in the circumferential direction of the base plate, the inner ends of the vent holes are opposite to the valve core, and the air outlet end of the first air nozzle is connected with the outer ends of the vent holes. The backing plate is convenient for the connection of the first air tap.

In the above-mentioned hemisphere valve, the said air vent leads to the valve core and tie plate junction. Make gaseous or liquid medium can let in case and backing plate junction, directly erode the solid particle impurity on the case outer wall face that the case was located, prevent that solid particle impurity from being located case and backing plate junction, lead to this department to have a joint space, influence the seal effect of hemisphere valve.

In the half ball valve, a plurality of thread counter bores are axially arranged on the base plate and are arranged on the base plate along the circumferential direction, an annular first flange is arranged at the upper end of the lower valve body, the base plate and the first flange are fixed through screws, an annular second flange is arranged at the lower end of the upper valve body, and the first flange and the second flange are fixedly connected through bolts. A plurality of screw thread counter bores set up on the backing plate along circumferencial direction, and the backing plate passes through the fix with screw with first flange, can make backing plate and first flange joint inseparabler, improves the leakproofness, and the reinforcing seals the effect.

In the above-mentioned half ball valve, the upper surface of the backing plate is provided with a step surface, the lower surface of the second flange is provided with an annular bulge matched with the step surface in shape, and an O-shaped sealing ring is arranged between the backing plate and the first flange. The connection of the first flange, the backing plate and the second flange is tighter and has better sealing performance.

In the semi-spherical valve, the lower surface of the base plate is provided with an annular groove, a sealing ring is fixed in the groove, and the sealing ring is connected with the valve core in a sealing manner. The valve core and the sealing ring realize the opening or closing of the half-ball valve.

In the half ball valve, the valve rod penetrates through the lower valve body, one end of the valve rod is connected with the valve core, and the other end of the valve rod is connected with the hand wheel. The hand wheel controls the valve rod to rotate, and the valve rod drives the valve core to rotate.

Compared with the prior art, the utility model has the advantages as follows:

1. when the hemispherical valve is opened or closed, gas or liquid which does not react with materials enters the annular pipe from the gas inlet and enters the gas inlet ends of the plurality of first gas nozzles from the annular pipe, the gas outlet end of each first gas nozzle is opposite to the valve core, so that the gas is directly communicated to the outer wall surface of the valve core, and the gas is insoluble in solid particles and washes the outer wall surface of the valve core, thereby preventing solid particle impurities from being adhered to the valve core, and avoiding that when the valve core rotates to close the hemispherical valve, a gap is formed at the joint of the valve core and the backing plate, thereby influencing the closing effect of the hemispherical valve;

2. gas or liquid medium can directly get into the first air cock of a plurality of from the air inlet and supply with the annular tube, and the solid particle impurity direct washout of the outer wall surface of valve core can be directly washed out to a plurality of first air cock, has improved the efficiency of washout.

Drawings

Fig. 1 is a schematic view of the hemisphere valve structure of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

FIG. 3 is a connection structure diagram of the ring pipe, the first air nozzle, the second air nozzle and the backing plate.

Fig. 4 is a cross-sectional view of the pad.

In the figure, 1, a valve rod; 2. an upper valve body; 3. a valve core; 4. a lower valve body; 5. a first air tap; 6. an annular tube; 6a, a first arc-shaped pipe; 6b, a second arc-shaped pipe; 6c, a three-way pipe; 7. an air inlet; 8. a second air tap; 9. a base plate; 10. a vent hole; 11. a threaded counter bore; 12. a first flange; 13. a second flange; 14. a step surface; 15. an annular projection; 16. an O-shaped sealing ring; 17. a groove; 18. a seal ring; 19. a handwheel.

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. 1-4, the hemispherical valve of the present invention comprises a valve rod 1, an upper valve body 2 with an opening at the lower end, an annular pipe 6, a valve core 3 and a lower valve body 4 with openings at the upper and lower ends, wherein the valve core 3 is positioned between the upper valve body 2 and the lower valve body 4, the valve rod 1 is arranged on the lower valve body 4 in a penetrating manner, one end of the valve rod 1 is connected with the valve core 3, the other end is connected with a hand wheel 19, the hand wheel 19 controls the rotation of the valve rod 1, the valve rod 1 drives the valve core 3 to rotate, the upper end of the lower valve body 4 is provided with an annular first flange 12, the lower end of the upper valve body 2 is provided with an annular second flange 13, the first flange 12 is fixedly connected with the second flange 13 through bolts, a backing plate 9 is arranged between the upper valve body 2 and the lower valve body 4, a plurality of thread counter bores 11 are axially arranged on the backing, can make backing plate 9 and first flange 12 be connected inseparabler, improve the leakproofness, the reinforcing seal effect, the upper surface of backing plate 9 is equipped with step face 14, the lower surface of second flange 13 has the annular arch 15 that matches with step face 14 shape, be equipped with O type sealing washer 16 between backing plate 9 and the first flange 12, make first flange 12, the connection of backing plate 9 and second flange 13 inseparabler and have better leakproofness, the lower surface of backing plate 9 is equipped with annular recess 17, be fixed with sealing washer 18 in the recess 17, sealing

washer

18 and 3 sealing connection, the opening or closing of hemisphere valve is realized with sealing washer 18 to case 3.

The periphery of the backing plate 9 is provided with a plurality of vent holes 10, the inner ends of the vent holes 10 are all directly communicated with the joints of the valve core 3 and the backing plate 9, the outer ends of the vent holes 10 are all connected with first air nozzles 5, the first air nozzles 5 are arranged in the circumferential direction, the annular pipe 6 comprises a first arc pipe 6a, a second arc pipe 6b and a three-way pipe 6c, the first arc pipe 6a and the second arc pipe 6b are mutually symmetrical, one end of each of the first arc pipe 6a and the second arc pipe 6b is open, the other end of each of the first arc pipe 6a and the second arc pipe 6b is closed, the open end of the first arc pipe 6a and the open end of the second arc pipe 6b are both connected with the three-way pipe 6c, one port of the three-way pipe 6c is an air inlet 7, the first arc pipe 6a and the second arc pipe 6b are both provided with a plurality of second air nozzles 8, the second air nozzles 8 are opposite to the first air, the annular pipe 6 is more convenient to mount and dismount.

The hand wheel 19 controls the valve rod 1 to rotate to drive the valve core 3 to rotate, so as to realize the opening or closing of the half ball valve; when the material in the upper valve body 2 is solid particles, when the hemispherical valve is opened or closed, gas which is insoluble in the solid particles enters the annular pipe 6 from the gas inlet 7, flows into the plurality of second gas nozzles 8 from the annular pipe 6, flows into the plurality of first gas nozzles 5 from the second gas nozzles 8, and flows into the vent hole 10 from the first gas nozzles 5, so that the gas is directly communicated with the joint of the valve core 3 and the backing plate 9, and the outer wall surface of the valve core 3 at the joint is washed, thereby preventing solid particle impurities from being adhered to the valve core 3, avoiding the solid particle impurities being positioned at the joint of the valve core 3 and the backing plate 9 when the hemispherical valve is closed, leading the joint gap at the joint to influence the sealing effect of the hemispherical valve, when the material in the upper valve body 2 is liquid containing fixed particles, similarly, leading in liquid medium which is insoluble in the fixed particles and the liquid from the gas inlet 7, leading the liquid medium to wash, prevent that solid particle from gluing on case 3, when avoiding the hemisphere valve to close, solid particle impurity is located case 3 and backing plate 9 junction, leads to this department to have the joint space to influence the closed effect of hemisphere valve.

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. The utility model provides a hemisphere valve, includes valve rod (1), lower extreme open-ended last valve body (2), case (3) and last lower extreme equal open-ended lower valve body (4), go up valve body (2) and lower valve body (4) fixed connection, case (3) are located between valve body (2) and lower valve body (4), valve rod (1) can drive case (3) and rotate, its characterized in that, go up and be equipped with the first air cock (5) of a plurality of between valve body (2) and lower valve body (4), the first air cock (5) of a plurality of are the circumferencial direction setting, the end of giving vent to anger of first air cock (5) is relative with case (3), and this valve still includes ring pipe (6), be equipped with air inlet (7) on ring pipe (6), the air inlet end of the first air cock (5) of a plurality of all links to each other with ring pipe (6).

2. The half-ball valve according to claim 1, wherein the annular pipe (6) is an annular pipe (6) with an opening, both ends of the opening of the annular pipe (6) are closed, the annular pipe (6) is provided with a plurality of second air nozzles (8) arranged circumferentially, and the plurality of second air nozzles (8) are opposite to and connected with the plurality of first air nozzles (5).

3. The half-ball valve according to claim 2, wherein the annular pipe (6) comprises a first arc pipe (6a), a second arc pipe (6b) and a three-way pipe (6c), the first arc pipe (6a) and the second arc pipe (6b) are both open at one end and closed at the other end, the open end of the first arc pipe (6a) and the open end of the second arc pipe (6b) are both connected with the three-way pipe (6c), and a plurality of second air nozzles (8) are arranged on the first arc pipe (6a) and the second arc pipe (6 b).

4. The hemisphere valve according to claim 1, 2 or 3, wherein a backing plate (9) is arranged between the upper valve body (2) and the lower valve body (4), a plurality of vent holes (10) are formed in the circumferential direction of the backing plate (9), the inner ends of the vent holes (10) are opposite to the valve core (3), and the air outlet end of the first air nozzle (5) is connected with the outer ends of the vent holes (10).

5. Hemisphere valve according to claim 4, characterized in that the ventilation hole (10) leads through the connection between the valve core (3) and the shim plate (9).

6. The half ball valve according to claim 4, wherein a plurality of threaded counter bores (11) are axially arranged on the backing plate (9), the threaded counter bores (11) are arranged on the backing plate (9) along the circumferential direction, an annular first flange (12) is arranged at the upper end of the lower valve body (4), the backing plate (9) and the first flange (12) are fixed through screws, an annular second flange (13) is arranged at the lower end of the upper valve body (2), and the first flange (12) and the second flange (13) are fixedly connected through bolts.

7. Semi-spherical valve according to claim 6, characterised in that the upper surface of the shim plate (9) is provided with a step surface (14), the lower surface of the second flange (13) is provided with an annular projection (15) matching the shape of the step surface (14), and an O-ring seal (16) is arranged between the shim plate (9) and the first flange (12).

8. The half-ball valve according to claim 4, wherein the lower surface of the backing plate (9) is provided with an annular groove (17), a sealing ring (18) is fixed in the groove (17), and the sealing ring (18) is connected with the valve core (3) in a sealing manner.

9. The half ball valve according to claim 1, 2 or 3, wherein the valve rod (1) is arranged on the lower valve body (4) in a penetrating way, one end of the valve rod (1) is connected with the valve core (3), and the other end is connected with a hand wheel (19).