CN216742957U - Cavitation-proof V-shaped ball valve - Google Patents
Cavitation-proof V-shaped ball valve Download PDFInfo
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- CN216742957U CN216742957U CN202123121178.6U CN202123121178U CN216742957U CN 216742957 U CN216742957 U CN 216742957U CN 202123121178 U CN202123121178 U CN 202123121178U CN 216742957 U CN216742957 U CN 216742957U
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Abstract
The utility model belongs to the technical field of the valve body, a prevent cavitation erosion V type ball valve is related to, draw together the valve body, the valve body internal rotation sets up the valve plate to the switching of control valve body, its characterized in that: the valve plate is constructed into a hemispherical shell, the valve body is provided with a valve seat, a positioning gland is arranged on the valve seat, and a fixed gland is arranged on the positioning gland; the inner surface of the positioning gland is constructed into an inner arc surface matched with the valve plate, and the positioning gland and the fixed gland are mutually communicated through mutually staggered through holes; the hemispherical shell of the valve plate is provided with a medium through hole part and a sealing part, and when the valve plate works, the ball valve is fully opened when the valve plate rotates until the medium through hole part is opposite to the inner cambered surface of the positioning gland; when the valve plate rotates to the state that the sealing part is opposite to the inner cambered surface of the positioning gland, the ball valve is completely closed. The ball valve can be suitable for the working conditions of high pressure difference, easy cavitation and flash evaporation generation and accurate regulation and control.
Description
Technical Field
The utility model belongs to the technical field of the valve body, a prevent cavitation erosion V type ball valve is related to.
Background
At present, fluid of a common V-shaped ball valve flows through a gap between a valve seat sealing surface and a valve plate sealing surface and is also a part where cavitation and cavitation occur, the sealing surface is easy to damage, the adjustment performance is reduced, meanwhile, the valve is easy to leak, the valve is too large, and the valve cannot be sealed.
Disclosure of Invention
The utility model provides an above-mentioned problem, provide an anti-cavitation V type ball valve, this ball valve can be applicable to high pressure differential, easily produce cavitation and flash distillation and need accurate regulation and control's operating mode again simultaneously.
According to the technical scheme of the utility model: the utility model provides an anti-cavitation V type ball valve, includes the valve body, the valve body internal rotation sets up the valve plate to the switching of control valve body, its characterized in that: the valve plate is constructed into a hemispherical shell, the valve body is provided with a valve seat, a positioning gland is arranged on the valve seat, and a fixed gland is arranged on the positioning gland;
the inner surface of the positioning gland is constructed into an inner arc surface matched with the valve plate, and the positioning gland and the fixed gland are mutually communicated through mutually staggered through holes; the hemispherical shell of the valve plate is provided with a medium through hole part and a sealing part, and when the valve plate works, the valve plate rotates until the medium through hole part is opposite to the inner cambered surface of the positioning gland, and the ball valve is fully opened; when the valve plate rotates to the state that the sealing part is opposite to the inner cambered surface of the positioning gland, the ball valve is completely closed.
As a further improvement of the utility model, overlap in proper order on the disk seat and establish first graphite seal ring and backing ring, the backing ring outside sets up the dish spring, and the positioning gland compresses tightly on the dish spring.
As a further improvement of the utility model, a second graphite sealing ring is respectively arranged between the positioning gland and the fixed gland as well as between the positioning gland and the valve body.
As a further improvement of the utility model, the bottom of the fixed gland is provided with a rectangular pressure equalizing groove.
As a further improvement of the utility model, a V-shaped groove is arranged in the middle of the valve plate.
As a further improvement of the utility model, the valve plate is rotatably arranged in the valve body through an upper shaft and a lower shaft, wherein the lower shaft is provided with a first shaft sleeve, a bottom pressing plate is arranged on the valve body corresponding to the outer side of the end surface of the lower shaft, and a sealing gasket is arranged between the bottom pressing plate and the valve body;
the upper shaft is provided with a second shaft sleeve, a packing component is arranged above the second shaft sleeve, and the packing component is compressed and fixed through a packing gland.
The technical effects of the utility model reside in that: the utility model discloses product rational in infrastructure ingenious, adopt multilayer orifice plate group gland and porous hemisphere spheroid and V type groove design, can satisfy the high pressure differential and need the regulation requirement of multistage decompression, and the regulation performance requirement that can be accurate again has eliminated the medium and has taken place cavitation, flash distillation and the unstable condition of regulation performance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a fully closed state of the valve.
Fig. 3 is a schematic view of the valve in a fully open state.
Fig. 4 is a schematic view of the valve in a half-open and half-closed state.
Description of reference numerals: 1. the valve comprises a valve body, 2, a bottom pressing plate, 3, a lower shaft, 4, a first shaft sleeve, 5, a sealing gasket, 6, a valve plate, 6-1, a medium through hole part, 6-2, a sealing part, 7, a valve seat, 8, a disc spring, 9, a backing ring, 10, a first graphite sealing ring, 11, a V-shaped groove, 12, a positioning gland, 13, a fixing gland, 13-1, a pressure equalizing groove, 14, a second shaft sleeve, 15, a packing assembly, 16, a packing gland, 17, a second graphite sealing ring, 18 and an upper shaft.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1-4, the utility model relates to a prevent cavitation erosion V type ball valve, including valve body 1, 1 internal rotation of valve body sets up valve plate 6 to control valve body 1's switching, valve plate 6 constructs for hemisphere casing, and disk seat 7 is installed to valve body 1, installs positioning gland 12 on the disk seat 7.
The inner surface of the positioning gland 12 is an inner arc surface matched with the valve plate 6, the positioning gland 12 and the fixed gland 13 are mutually communicated through mutually staggered through holes, the fixed gland 13 is arranged on the positioning gland 12, and the bottom of the fixed gland 13 is provided with a rectangular pressure equalizing groove 13-1; the fixed gland 13 and the positioning gland 12 form a porous plate group structure, and the multi-stage pressure reduction effect is achieved.
The hemispherical shell of the valve plate 6 is provided with a medium through hole part 6-1 and a sealing part 6-2, and when the valve plate 6 works, the ball valve is fully opened when the valve plate 6 rotates until the medium through hole part 6-1 is opposite to the inner cambered surface of the positioning gland 12; when the valve plate 6 rotates to the state that the sealing part 6-2 is opposite to the inner cambered surface of the positioning gland 12, the ball valve is completely closed. The positioning gland 12 can effectively play a role in positioning and pressure reduction when in work.
The valve seat 7 is sequentially sleeved with a first graphite sealing ring 10 and a backing ring 9, a disc spring 8 is arranged on the outer side of the backing ring 9, and a positioning gland 12 is tightly pressed on the disc spring 8.
Second graphite sealing rings 17 are respectively arranged between the positioning gland 12 and the fixed gland 13 as well as between the positioning gland and the valve body 1.
A V-shaped groove is formed in the middle of the valve plate 6 and is mainly used for adjusting the small opening of the valve by 0-12%; the adjustable ratio and the adjustment precision of the valve are increased.
The valve plate 6 is rotatably arranged in the valve body 1 through the upper shaft 18 and the lower shaft 3, wherein the lower shaft 3 is provided with the first shaft sleeve 4, the outer side of the end surface of the valve body 1 corresponding to the lower shaft 3 is provided with the bottom pressing plate 2, and a sealing gasket 5 is arranged between the bottom pressing plate 2 and the valve body 1.
The upper shaft 18 is provided with a second shaft sleeve 14, a packing component 15 is arranged above the second shaft sleeve 14, and the packing component 15 is pressed and fixed through a packing gland 16.
As shown in fig. 1 to 4, the valve plate 6 has a hemispherical shell structure, and a medium through hole portion 6-1 is formed in a part of the hemispherical shell, so that during operation, the hemispherical shell and the valve seat 7 are always kept in contact during pressure reduction and full-stroke action of the valve, and fluid is prevented from flowing between the valve seat 7 and a sealing surface of the hemispherical shell, so that the sealing surface is damaged.
As shown in fig. 3 and 4, when the pressure reducing valve works, a medium flows to the positioning gland 12 through the medium through hole part 6-1, and because a clearance space is formed between the outer arc surface of the medium through hole part 6-1 and the inner arc surface of the positioning gland 12, the clearance space is filled with the medium before the medium flows to the through hole of the positioning gland 12, so that the pressure reduction is realized; when the medium passes through the positioning gland 12, the medium firstly fills the equalizing groove 13-1 before entering the through hole of the fixed gland 13 and then flows out through the through hole of the fixed gland 13.
The utility model discloses the product is prevented cavitation V type ball valve and is two-way flow, and the fluid import direction all can be regarded as to positive and negative both sides.
The embodiment shows the anti-cavitation V-shaped ball valve, and aims at controlling the fluid containing fiber and the slurry fluid by a control system which requires large regulation ratio, large fluid pressure difference and cavitation in the operation process. The utility model discloses it is the utilization to demonstrate the utility model discloses produce similarly in order to realize the utility model discloses a device of purpose and characteristic. The above implementation is only one concrete representation of the invention and should not be considered as being limited by the description of the embodiments. Since numerous simple modifications and variations will readily occur to those skilled in the art based on the disclosure herein, it is not desired to limit the disclosure to the exact construction, operation and description, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.
Claims (6)
1. The utility model provides an anti-cavitation V-shaped ball valve, includes valve body (1), valve body (1) internal rotation sets up valve plate (6) to the switching of control valve body (1), its characterized in that: the valve plate (6) is constructed into a hemispherical shell, the valve body (1) is provided with a valve seat (7), the valve seat (7) is provided with a positioning gland (12), and the positioning gland (12) is provided with a fixed gland (13);
the inner surface of the positioning gland (12) is constructed into an inner arc surface matched with the valve plate (6), and the positioning gland (12) is communicated with the fixed gland (13) through mutually staggered through holes; the semi-spherical shell of the valve plate (6) is provided with a medium through hole part (6-1) and a sealing part (6-2), and when the valve plate (6) rotates to the state that the medium through hole part (6-1) is opposite to the inner cambered surface of the positioning gland (12) during work, the ball valve is fully opened; when the valve plate (6) rotates to the state that the sealing part (6-2) is opposite to the inner cambered surface of the positioning gland (12), the ball valve is completely closed.
2. The anti-cavitation V-ball valve of claim 1, wherein: the first graphite sealing ring (10) and the backing ring (9) are sequentially sleeved on the valve seat (7), the disc spring (8) is arranged on the outer side of the backing ring (9), and the positioning gland (12) is pressed on the disc spring (8).
3. The anti-cavitation V-ball valve of claim 1, wherein: and second graphite sealing rings (17) are respectively arranged between the positioning gland (12) and the fixed gland (13) as well as between the positioning gland and the valve body (1).
4. The anti-cavitation V-ball valve of claim 1, wherein: the bottom of the fixed gland (13) is provided with a rectangular pressure equalizing groove (13-1).
5. The anti-cavitation V-ball valve of claim 1, wherein: and a V-shaped groove is formed in the middle of the valve plate (6).
6. The anti-cavitation V-ball valve of claim 1, wherein: the valve plate (6) is rotatably arranged in the valve body (1) through an upper shaft (18) and a lower shaft (3), wherein the lower shaft (3) is provided with a first shaft sleeve (4), a bottom pressing plate (2) is arranged on the valve body (1) corresponding to the outer side of the end surface of the lower shaft (3), and a sealing gasket (5) is arranged between the bottom pressing plate (2) and the valve body (1);
the upper shaft (18) is provided with a second shaft sleeve (14), a packing component (15) is arranged above the second shaft sleeve (14), and the packing component (15) is pressed and fixed through a packing gland (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121178.6U CN216742957U (en) | 2021-12-13 | 2021-12-13 | Cavitation-proof V-shaped ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121178.6U CN216742957U (en) | 2021-12-13 | 2021-12-13 | Cavitation-proof V-shaped ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742957U true CN216742957U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123121178.6U Active CN216742957U (en) | 2021-12-13 | 2021-12-13 | Cavitation-proof V-shaped ball valve |
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| Country | Link |
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| CN (1) | CN216742957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135691A (en) * | 2021-12-13 | 2022-03-04 | 无锡卓尔阀业有限公司 | Cavitation-proof V-shaped ball valve |
-
2021
- 2021-12-13 CN CN202123121178.6U patent/CN216742957U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135691A (en) * | 2021-12-13 | 2022-03-04 | 无锡卓尔阀业有限公司 | Cavitation-proof V-shaped ball valve |
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