CN210218757U

CN210218757U - Anti-corrosion ball valve

Info

Publication number: CN210218757U
Application number: CN201920695237.4U
Authority: CN
Inventors: Zhendao Yu; 虞振道; Tong Lin; 林童
Original assignee: Ya Ya Valve Co Ltd
Current assignee: Ya Ya Valve Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-03-31
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses an anti-corrosion ball valve, which comprises a valve middle body, a valve ball and a valve rod, wherein the inner wall of the valve middle body is provided with a circle of middle body sleeve for coating the valve ball; the upper packing is provided with a first V-shaped groove, and the lower packing is provided with a first V-shaped block matched with the first V-shaped groove. The utility model has the advantages of it is following and effect: have last filler and lower filler in first V type piece and the first V type groove through the setting, make it have to both sides expansion effect, realize simultaneously to valve rod and valve in the body sealed to reach the effect of isolated corrosive medium and valve body contact, and then avoid the valve body corrosion phenomenon to appear, improve the life of ball valve.

Description

Anti-corrosion ball valve

Technical Field

The utility model relates to a valve field, in particular to anticorrosive ball valve.

Background

The anti-corrosion ball valve is one of valves, reduces connecting bolts of the valve body under the conditions of high pressure and large caliber, enhances the reliability of the valve, and can overcome the influence of the dead weight of a system on the normal work of the valve.

Chinese patent CN201462050U discloses an anticorrosion ball valve, which comprises a valve body, wherein a spherical valve flap is arranged in the valve body, the spherical valve flap has a channel, and a through hole communicated with the channel is formed at one side of the spherical valve flap.

When the anti-corrosion ball valve is used, the valve rod is rotated to control the spherical valve clack to rotate, so that the whole valve body is controlled to be opened and closed. However, after long-time use, because the valve rod rotates relatively with the valve body for a long time, the sealing filler between the valve rod and the valve body is easy to wear, and at the moment, corrosive media can contact with the valve body through the worn sealing filler, so that the valve body is corroded, the service life of the ball valve is shortened, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anticorrosive ball valve has high life's effect.

The above technical purpose of the present invention can be achieved by the following technical solutions: an anticorrosion ball valve comprises a valve middle body, a valve ball arranged in the valve middle body and a valve rod arranged on the valve ball, wherein a circle of middle body sleeve for coating the valve ball is arranged on the inner wall of the valve middle body, and valve seats are embedded at two ends of the middle body sleeve; an anti-corrosion packing assembly is arranged between the valve rod and the valve middle body and comprises an upper packing and a lower packing which are matched with each other, and a packing pressing sleeve for applying pressure to the upper packing and a packing pressing plate for fixing the packing pressing sleeve are sleeved on the outer wall of the valve rod; a first V-shaped groove is formed in one end, facing the lower filler, of the upper filler, and a first V-shaped block matched with the first V-shaped groove is formed in one end, facing the upper filler, of the lower filler; and one end of the lower packing, which is far away from the upper packing, is provided with a rubber gasket, and under the action of the packing pressing sleeve, the rubber gasket forms a lower cambered surface attached to the middle body sleeve.

Through adopting above-mentioned technical scheme, through setting up the rubber gasket to under the packing force effect of last filler and lower filler, make the rubber gasket form the lower cambered surface of laminating in well body cover. And because the lower part of the rubber gasket is jointed with the excircle of the middle body sleeve, and the top end of the upper filler is jointed with the filler pressing sleeve, the upper filler, the lower filler and the rubber gasket can be stressed in a balanced manner when being pressed. And because last filler and lower packing adopt first V type piece and first V type groove to mutually support, can enlarge both area of contact when compressing tightly, have simultaneously to both sides expansion effect to make the both sides of going up filler and lower packing realize sealedly with valve rod and valve midbody respectively, thereby reach the effect of isolated corrosive medium and valve body contact, and then avoid the valve body corrosion phenomenon to appear, improve the life of ball valve.

The utility model discloses a further set up to: a plurality of middle fillers are arranged between the upper filler and the lower filler, one end of each middle filler is provided with a second V-shaped block matched with the upper filler, and the other end of each middle filler is provided with a second V-shaped groove matched with the lower filler.

Through adopting above-mentioned technical scheme, through addding a plurality of well fillers, can strengthen the sealing performance between the valve rod and the valve body to the contact of isolated medium and valve body avoids the corrosion phenomenon to appear in the valve body, has improved the life of ball valve.

The utility model discloses a further set up to: one end of the lower filler facing the rubber gasket is provided with an upper cambered surface matched with the rubber gasket.

Through adopting above-mentioned technical scheme, because lower packing and rubber gasket looks butt, consequently through setting up the cambered surface to rubber gasket takes place deformation, and forms the lower cambered surface of laminating mutually with well body cover excircle.

The utility model discloses a further set up to: the middle body sleeve is made of ceramic materials.

By adopting the technical scheme, because the ceramic material has high temperature resistance, wear resistance and strong corrosion resistance, and simultaneously has the characteristics of high strength, high toughness and good sealing property of the rubber material, the service life of the middle body sleeve can be greatly prolonged, and the effect of long service life is achieved.

The utility model discloses a further set up to: one end of the valve rod, which is positioned outside the valve middle body, is provided with a circle of limiting rings, and a circle of limiting grooves for embedding the limiting rings are formed in the intersection of the packing pressing sleeve and the packing pressing plate.

Through adopting above-mentioned technical scheme, through the cooperation that sets up spacing ring and spacing groove, realize valve rod axial direction's spacing, avoid the valve rod departure to this anticorrosive ball valve's safety in utilization has been improved.

The utility model discloses a further set up to: a gap is arranged between the outer wall of the limiting ring and the inner wall of the limiting groove.

Through adopting above-mentioned technical scheme, through setting up the space, when preventing the valve rod departure, reduce the frictional force between spacing ring and the spacing groove to the minimum to prevent that the operating torque of this anticorrosive ball valve is too big, thereby make this anticorrosive ball valve open and close the process light more convenient.

The utility model discloses a further set up to: and a channel communicated with the interior of the valve seat penetrates through the valve ball, and the diameter of the inner wall of the channel is equal to that of the inner wall of the valve seat.

Through adopting above-mentioned technical scheme, because the inner wall diameter of passageway equals with the inner wall diameter of disk seat, consequently when the medium flows to the runner in along the disk seat inner wall, the medium can all flow through the runner, and the outer wall of valve ball can not contact the medium, consequently can avoid the outer wall of valve ball to appear corroding the phenomenon, has prolonged the life of valve ball.

To sum up, the utility model discloses following beneficial effect has:

1. the upper packing and the lower packing which are provided with the first V-shaped block and the first V-shaped groove are arranged, so that the expansion effect towards two sides is achieved, and the valve rod and the valve middle body are sealed at the same time, so that the effect of isolating corrosive media from contacting with the valve body is achieved, the corrosion phenomenon of the valve body is avoided, and the service life of the ball valve is prolonged;

2. by additionally arranging a plurality of middle fillers, the sealing performance between the valve rod and the valve middle body is enhanced, so that the contact between a medium and the valve body is isolated, the corrosion phenomenon of the valve body is avoided, and the service life of the ball valve is prolonged;

3. the limit of the valve rod in the axial direction is realized by arranging the matching of the limit ring and the limit groove, so that the valve rod is prevented from flying out;

4. through setting up the space, when preventing the valve rod departure, also frictional force between spacing ring and the spacing groove reduces to the minimum to prevent that the operating torque of this anticorrosive ball valve is too big, thereby make this anticorrosive ball valve open and close the process light convenient more.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

fig. 2 is a schematic structural view of the corrosion prevention packing assembly of the embodiment.

Reference numerals: 1. a valve-in-body; 2. a valve ball; 21. a channel; 3. a valve stem; 31. pressing and sleeving the filler; 32. a packing press plate; 33. a limiting ring; 34. a limiting groove; 35. a void; 4. a middle body sleeve; 5. a valve seat; 6. an anti-corrosive filler component; 61. filling; 62. lower filling; 63. a first V-shaped groove; 64. a first V-shaped block; 65. a rubber gasket; 66. a middle filler; 67. a second V-shaped block; 68. and a second V-shaped groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the anti-corrosion ball valve comprises a valve middle body 1 positioned between a left valve body and a right valve body, a valve ball 2 arranged in the valve middle body 1, and a valve rod 3 arranged on the valve ball 2. The inner wall of the valve middle body 1 is provided with a circle of middle body sleeve 4 made of ceramic materials, the middle body sleeve 4 completely covers the valve ball 2, and valve seats 5 are embedded at two ends of the middle body sleeve 4. A channel 21 communicated with the inside of the valve seat 5 penetrates through the valve ball 2, and the diameter of the inner wall of the channel 21 is equal to that of the inner wall of the valve seat 5.

When the anti-corrosion ball valve is used, the valve rod 3 is driven to rotate by the hand wheel (not shown in the figure), and the valve rod 3 drives the valve ball 2 to rotate, so that the opening and closing of the flow passage are controlled, and the circulation or the cutting-off of a medium are realized.

In this embodiment, the diameter of the inner wall of the passage 21 is equal to the diameter of the inner wall of the valve seat 5, i.e., the cross-sectional flow area is identical. Therefore, when the medium flows into the flow channel along the inner wall of the valve seat 5, the medium can completely flow out through the flow channel, and the outer wall of the valve ball 2 cannot contact the medium, so that the corrosion phenomenon of the outer wall of the valve ball 2 can be avoided, and the service life of the valve ball 2 is prolonged.

As shown in fig. 1 and 2, an anticorrosive packing assembly 6 is arranged between the valve rod 3 and the valve middle body 1, the anticorrosive packing assembly 6 comprises an upper packing 61 and a lower packing 62 which are matched with each other, and a packing pressing sleeve 31 for pressing the upper packing 61 and a packing pressing plate 32 for fixing the packing pressing sleeve 31 are sleeved on the outer wall of the valve rod 3.

As shown in fig. 2, one end of the upper packing 61 facing the lower packing 62 is provided with a first V-shaped groove 63, and one end of the lower packing 62 facing the upper packing 61 is provided with a first V-shaped block 64 matched with the first V-shaped groove 63.

As shown in fig. 2, one end of the lower packing 62 away from the upper packing 61 is provided with a rubber gasket 65, and under the action of the packing pressing sleeve 31, the rubber gasket 65 forms a lower arc surface attached to the middle body sleeve 4, and one end of the lower packing 62 facing the rubber gasket 65 is provided with an upper arc surface matched with the rubber gasket 65.

When the ball valve works, the upper filler 61 and the lower filler 62 are matched with each other by the first V-shaped block 64 and the first V-shaped groove 63, so that the contact area between the upper filler and the lower filler can be enlarged when the ball valve is pressed, and the ball valve has an expansion effect towards two sides. Make the both sides of going up filler 61 and lower filler 62 can realize sealedly with body 1 in valve rod 3 and the valve respectively to reach the effect of isolated corrosive medium and valve body contact, and then avoid the valve body corrosion phenomenon to appear, improve the life of ball valve.

Further, by providing the rubber gasket 65, the rubber gasket 65 is in a flat annular shape without an external force. Under the pressing force of the upper filler 61 and the lower filler 62, the rubber gasket 65 forms a lower arc surface which is jointed with the middle sleeve 4. Simultaneously through setting up the cambered surface to rubber gasket 65 takes place to deform, and form the lower cambered surface of laminating mutually with well body cover 4 excircle, thereby avoid down packing 62 to appear damaging, improve down packing 62's life.

And because the lower part of the rubber gasket 65 is jointed with the excircle of the middle body sleeve 4, and the top end of the upper filler 61 is jointed with the filler pressing sleeve 31, the upper filler 61, the lower filler 62 and the rubber gasket 65 can be stressed in a balanced manner when being pressed.

As shown in fig. 1 and 2, a plurality of fillers 66 are disposed between the upper filler 61 and the lower filler 62, and preferably two fillers 66 are provided in the present embodiment. One end of each middle filler 66 is provided with a second V-shaped block 67 matched with the upper filler 61, and the other end of each middle filler 66 is provided with a second V-shaped groove 68 matched with the lower filler 62.

Through addding a plurality of middle packing 66, can strengthen the sealing performance between body 1 in valve rod 3 and the valve to the contact of isolated medium and valve body, thereby avoid the corrosion phenomenon to appear in the valve body, improved the life of ball valve.

As shown in fig. 1 and 2, one end of the valve rod 3, which is located outside the valve middle body 1, is provided with a circle of limiting ring 33, a circle of limiting groove 34, in which the limiting ring 33 is embedded, is provided at the intersection of the packing pressing sleeve 31 and the packing pressing plate 32, and a gap 35 is provided between the outer wall of the limiting ring 33 and the inner wall of the limiting groove 34.

Through the cooperation that sets up spacing ring 33 and spacing groove 34, realize valve rod 3 axial direction's spacing to avoid valve rod 3 departure, improved this anticorrosive ball valve's safety in utilization. By arranging the gap 35, the friction force between the limiting ring 33 and the limiting groove 34 is reduced to the minimum while the valve rod 3 is prevented from flying out, so that the operation torque of the anti-corrosion ball valve is prevented from being too large, and the opening and closing process of the anti-corrosion ball valve is easier and more convenient.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. An anticorrosive ball valve which is characterized in that: the valve comprises a valve middle body (1), a valve ball (2) arranged in the valve middle body (1) and a valve rod (3) arranged on the valve ball (2), wherein a circle of middle body sleeve (4) covering the valve ball (2) is arranged on the inner wall of the valve middle body (1), and valve seats (5) are embedded at two ends of the middle body sleeve (4);

an anti-corrosion packing assembly (6) is arranged between the valve rod (3) and the valve middle body (1), the anti-corrosion packing assembly (6) comprises an upper packing (61) and a lower packing (62) which are matched with each other, and a packing pressing sleeve (31) for pressing the upper packing (61) and a packing pressing plate (32) for fixing the packing pressing sleeve (31) are sleeved on the outer wall of the valve rod (3);

one end, facing the lower filler (62), of the upper filler (61) is provided with a first V-shaped groove (63), and one end, facing the upper filler (61), of the lower filler (62) is provided with a first V-shaped block (64) matched with the first V-shaped groove (63);

one end, far away from the upper filler (61), of the lower filler (62) is provided with a rubber gasket (65), and under the action of the filler pressing sleeve (31), the rubber gasket (65) forms a lower arc surface attached to the middle body sleeve (4).

2. An anti-corrosion ball valve according to claim 1, characterized in that: a plurality of middle fillers (66) are arranged between the upper filler (61) and the lower filler (62), one end of each middle filler (66) is provided with a second V-shaped block (67) matched with the upper filler (61), and the other end of each middle filler (66) is provided with a second V-shaped groove (68) matched with the lower filler (62).

3. An anti-corrosion ball valve according to claim 2, characterized in that: one end, facing the rubber gasket (65), of the lower packing (62) is provided with an upper cambered surface matched with the rubber gasket (65).

4. An anti-corrosion ball valve according to claim 3, characterized in that: the middle body sleeve (4) is made of ceramic materials.

5. An anti-corrosion ball valve according to claim 1, characterized in that: one end, located outside the valve middle body (1), of the valve rod (3) is provided with a circle of limiting ring (33), and a circle of limiting groove (34) for embedding the limiting ring (33) is formed in the intersection of the packing pressing sleeve (31) and the packing pressing plate (32).

6. An anti-corrosion ball valve according to claim 5, characterized in that: a gap (35) is arranged between the outer wall of the limiting ring (33) and the inner wall of the limiting groove (34).

7. An anti-corrosion ball valve according to claim 1, characterized in that: a channel (21) communicated with the interior of the valve seat (5) penetrates through the valve ball (2), and the diameter of the inner wall of the channel (21) is equal to that of the inner wall of the valve seat (5).