CN212297702U - Friction-free full-bore hemispherical valve - Google Patents
Friction-free full-bore hemispherical valve Download PDFInfo
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- CN212297702U CN212297702U CN202020575824.2U CN202020575824U CN212297702U CN 212297702 U CN212297702 U CN 212297702U CN 202020575824 U CN202020575824 U CN 202020575824U CN 212297702 U CN212297702 U CN 212297702U
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- valve seat
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Abstract
The utility model relates to a no-friction full-bore hemisphere valve, the upper end of the valve body is sealed and fixed with a valve cover, the inner side of the outlet of the valve body is provided with an internally installed valve seat, a valve rod passes through the valve cover to be connected with a hemisphere in the valve body, and two rolling pin shafts matched with the valve rod are arranged on a bracket; the valve rod is provided with a guide rail groove corresponding to the rolling pin shaft, the vertical lower end of the upper end of the guide rail groove is provided with a spiral groove, and the shape of the spiral groove corresponds to the track of the valve rod during rotation; the rotating hand wheel drives the valve rod to ascend or descend so that the hemisphere rotates around the ball handle at the lower end of the hemisphere to separate from or press the valve seat tightly. The utility model discloses a design guide rail groove and flat side on the valve rod of valve body are in the off-state opening and close the sealed face of in-process spheroid and disk seat to the sliding friction of sealed face has been avoided. The utility model discloses a valve body compact structure is simple, sealing performance is good, longe-lived.
Description
Technical Field
The utility model relates to a valve body field especially relates to a full latus rectum hemisphere valve of zero friction.
Background
The semi-ball valve is a new valve developed for solving the technical problem of conveying two-phase mixed flow media such as solution, ore pulp and the like. The successful research and development of the half ball valve provides a reliable control valve for the dilemma that the flow is influenced by easy precipitation, scaling and precipitation in the solution process flow of the industrial departments of chemical industry, petroleum, gas, metallurgy, electronics and the like. The semi-ball valve has the characteristics of small opening force, capability of breaking scaling obstacles by closing, good sealing performance and the like. The half ball valve is made of wear-resistant and corrosive materials, so the half ball valve is considered to be ideal transmission equipment applied to two-phase media such as water, steam, sewage, petrochemical industry, natural gas, solution, ore pulp and the like, dust gas and the like. The medium circulation in-process pressure is great, and spheroid and valve seat sealing surface always have one section friction when will opening or close to reduced the life of valve, how to avoid the sliding friction between the sealing surface when opening and close, extension sealing surface life is the problem that needs the solution.
SUMMERY OF THE UTILITY MODEL
To the defect that above-mentioned prior art exists, the utility model aims to solve the technical problem that a spheroid and disk seat are equipped with sliding friction's hemisphere valve when opening and close, can prolong the life of the sealed face of valve greatly. And adopt built-in disk seat, can design for full latus rectum structure, greatly increased valve's circulation ability.
The utility model provides a technical scheme of above-mentioned technical problem is: a friction-free full-bore half-ball valve comprises a valve body, wherein the upper end of the valve body is sealed and fixed with a valve cover through a stud, a sealing gasket and a hexagon nut, a valve seat is arranged on the inner side of an outlet of the valve body, a valve rod penetrates through the valve cover to be connected with a half-ball body in the valve body, and the valve cover and the valve rod are sealed through a shaft sleeve, a packing gland, a bolt and a hexagon nut B; the upper end of the valve cover is provided with a bracket integrated with the valve cover, and the bracket is provided with two rolling pin shafts matched with the valve rod; a bearing, a valve rod nut, a bearing and a bearing gland are arranged between the valve rod at the upper end of the rolling pin shaft and the bracket from bottom to top; the upper end of the valve rod is fixed with a hand wheel through a hand wheel nut; the valve rod is provided with a guide rail groove corresponding to the rolling pin shaft, the upper end of the guide rail groove is provided with a spiral groove at the vertical lower end, and the shape of the spiral groove corresponds to the track of the valve rod during rotation; the head part of the rolling pin shaft is inserted into the guide rail groove; the lower end of the valve rod is provided with a flat surface corresponding to the guide rail groove, the lower part of the flat surface is vertical, and the upper part of the flat surface is inclined; the valve rod is matched with the double pins at the upper end of the hemisphere through the flat side; the rotating hand wheel drives the valve rod to ascend or descend so that the hemisphere rotates around the ball handle at the lower end of the hemisphere to separate from or press the valve seat tightly, and the inner wall of the valve body is provided with a lining matched with the ball handle.
Furthermore, the valve seat adopts a full-bore floating built-in structure, and the valve seat and the inner wall of the valve body are sealed and fixed through three open rings, screws and a valve seat sealing ring; the valve seat comprises a soft sealing valve seat and a hard sealing valve seat.
Furthermore, stainless steel, alloy steel, hard alloy or spraying wear-resistant and corrosion-resistant hard alloy is welded on the surface of the hemisphere.
Further, the surface of the hard sealing valve seat is welded with stainless steel, alloy steel, hard alloy or sprayed with wear-resistant and corrosion-resistant hard alloy; the soft sealing valve seat is made of high-quality plastics such as PTFE (polytetrafluoroethylene), modified nylon, PEEK (polyether-ether-ketone) and the like; the roll pin shaft is hardened.
Furthermore, the upper end of the hand wheel is provided with a protective cover, and the valve rod is provided with an indicator.
Furthermore, an oil nozzle is arranged on the outer side of the valve rod nut.
The utility model discloses for prior art's beneficial effect: the utility model discloses a valve body adopts the design of straight-flow type full diameter circular passageway, facial make-up type valve body, central hemisphere, the built-in formula of disk seat, compact structure is simple, sealing performance is good, longe-lived. The valve rod is provided with the guide rail groove and the flat surface, so that the hemispheroid can rotate around the lower end to separate from the valve seat and then rotate around the axis of the valve rod for 90 degrees to open the valve when being opened, and rotate around the axis of the valve rod for 90 degrees and then rotate around the lower end to compress the valve seat when being closed, so that the valve is closed, and the sealing surface of the hemispheroid and the sealing surface of the valve seat are in a separation state in the whole opening and closing process, so that the sliding friction of the sealing surface is avoided. The strength design of the hemisphere is optimized through mechanical calculation and mechanical analysis, so that the requirements of safe use are met, and materials are saved. The valve seat adopts a full-bore floating built-in structure, and the three opening rings are used for limiting the movement of the valve seat, so that the strength and the sealing of the end flange cannot be influenced by the structure of the valve seat, and the valve seat is attractive, simple and practical. The valve has the advantages of compact structure, good sealing performance, long service life and low comprehensive cost.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is an enlarged view showing the expansion of the guide rail groove of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments, and all similar structures and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention.
As shown in FIG. 1 and FIG. 2, the embodiment of the utility model provides a pair of frictionless full latus rectum hemisphere valve, including valve body 1, the valve body adopts the full circular passageway of straight-flow type, goes up dress type valve body, central hemisphere, the built-in design of disk seat, compact structure is simple, sealing performance is good, longe-lived. The upper end of the valve body 1 is sealed and fixed with a valve cover 10 through a stud 8, a sealing gasket 6 and a hexagon nut 9, the inner side of the outlet of the valve body 1 is provided with a valve seat 26, the valve rod 4 penetrates through the valve cover 10 to be connected with the hemispheroid 3 in the valve body 1, and the valve cover 10 and the valve rod 4 are sealed through a shaft sleeve 7, a packing 23, a packing gland 11, a bolt 21 and a hexagon nut B22; the upper end of the valve cover 10 is provided with a bracket integrated with the valve cover, and the bracket is provided with two rolling pin shafts 12 matched with the valve rod 4; a bearing 13, a valve rod nut 14, a bearing 15 and a bearing gland 16 are arranged between the valve rod 4 at the upper end of the rolling pin shaft 12 and the bracket from bottom to top; the upper end of the valve rod is fixed with a hand wheel 17 through a hand wheel nut 18; the valve rod 4 is provided with a guide rail groove corresponding to the rolling pin shaft 12, the upper end of the guide rail groove is provided with a spiral groove at the vertical lower end, and the shape of the spiral groove corresponds to the track of the valve rod 4 during rotation; the head of the rolling pin shaft 12 is inserted into the guide rail groove; the lower end of the valve rod 4 is provided with a flat surface corresponding to the guide rail groove, the lower part of the flat surface is vertical, and the upper part of the flat surface is inclined; the valve rod 4 is matched with a double pin at the upper end of the hemisphere 3 through a flat side; the hand wheel 17 is rotated to drive the valve rod 4 to ascend or descend so that the hemisphere 3 rotates around the ball handle at the lower end of the hemisphere to separate from or press the valve seat 26, and the inner wall of the valve body 1 is provided with the bushing 2 matched with the ball handle.
The valve seat 26 adopts a full-bore floating built-in structure, and the valve seat 26 and the inner wall of the valve body 1 are sealed and fixed through a three-open ring 24, a screw 25 and a valve seat sealing ring 27; the valve 26 seats include a soft seal valve seat and a hard seal valve seat. The three-opening ring is used for limiting the movement of the valve seat, so that the strength and the sealing of the end flange cannot be influenced by the structure of the valve seat, and the valve seat is attractive, simple and practical.
Stainless steel, alloy steel, hard alloy or sprayed wear-resistant corrosion-resistant hard alloy are welded on the surface of the hemisphere 3. The surface of the hard sealing valve seat is welded with stainless steel, alloy steel, hard alloy or sprayed with wear-resistant and corrosion-resistant hard alloy; the soft sealing valve seat is made of high-quality plastics such as PTFE (polytetrafluoroethylene), modified nylon, PEEK (polyether-ether-ketone) and the like; the rolling pin 12 is hardened. Increase the service life of the valve
The upper end of the hand wheel 17 is provided with a protective cover 19, and the valve rod 4 is provided with an indicator 20.
And an oil nozzle is arranged on the outer side of the valve rod nut 14.
The working principle is as follows: when the valve is opened, the hand wheel is rotated to drive the valve rod 4 to move upwards along the vertical groove at the upper end of the guide rail groove, and meanwhile, the double-pin 5 drives the hemispheroid 3 to rotate for a certain angle around the lower end ball handle along the flat inclined surface, so that the hemispheroid 3 falls off the valve seat 26; the valve rod 4 moves downwards along the spiral groove at the upper end of the guide rail groove and rotates anticlockwise, and the flat-square vertical surface at the lower end of the valve rod 4 drives the double-pin 5 to further drive the hemispheroid 3 to rotate by 90 degrees around the axis of the valve rod to open the valve; the valve closing step is opposite to the opening step, when the valve is closed, the hemisphere 3 firstly rotates 90 degrees clockwise around the axis of the valve rod, then the hemisphere 3 rotates a certain angle around the lower end ball handle, and the hemisphere 3 presses the valve seat 26 to close the valve. The valve rod is provided with the guide rail groove and the flat surface, so that the hemisphere can enable the sphere and the valve seat to be always in a separation state when being opened and closed, relative sliding friction is avoided, and the service life of a sealing surface of the valve is prolonged.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a full latus rectum hemisphere valve of no friction which characterized in that: the valve comprises a valve body (1), wherein the upper end of the valve body (1) is hermetically fixed with a valve cover (10) through a stud (8), a sealing gasket (6) and a hexagon nut (9), the inner side of an outlet of the valve body (1) is provided with a valve seat (26), a valve rod (4) penetrates through the valve cover (10) to be connected with a hemispheroid (3) in the valve body (1), and the valve cover (10) and the valve rod (4) are sealed through a shaft sleeve (7), a packing (23), a packing gland (11), a bolt (21) and a hexagon nut B (22); the upper end of the valve cover (10) is provided with a bracket integrated with the valve cover, and the bracket is provided with two rolling pin shafts (12) matched with the valve rod (4); a bearing (13), a valve rod nut (14), a bearing (15) and a bearing gland (16) are arranged between the valve rod (4) at the upper end of the rolling pin shaft (12) and the bracket from bottom to top; the upper end of the valve rod is fixed with a hand wheel (17) through a hand wheel nut (18); the valve rod (4) is provided with a guide rail groove corresponding to the rolling pin shaft (12), the upper end of the guide rail groove is provided with a spiral groove at the vertical lower end, and the shape of the spiral groove corresponds to the track of the valve rod (4) during rotation; the head part of the rolling pin shaft (12) is inserted into the guide rail groove; the lower end of the valve rod (4) is provided with a flat surface corresponding to the guide rail groove, the lower part of the flat surface is vertical, and the upper part of the flat surface is inclined; the valve rod (4) is matched with the double pins at the upper end of the hemispheroid (3) through the flat side; the hand wheel (17) is rotated to drive the valve rod (4) to ascend or descend so that the hemisphere (3) rotates around the ball handle at the lower end of the hemisphere to separate from or press the valve seat (26), and the inner wall of the valve body (1) is provided with a bushing (2) matched with the ball handle.
2. The hemispherical valve according to claim 1, wherein: the valve seat (26) adopts a full-bore floating built-in structure, and the valve seat (26) and the inner wall of the valve body (1) are sealed and fixed through three open rings (24), screws (25) and a valve seat sealing ring (27); the valve seat (26) includes a soft seal valve seat and a hard seal valve seat.
3. The hemispherical valve according to claim 1, wherein: stainless steel, alloy steel, hard alloy or sprayed wear-resistant corrosion-resistant hard alloy are welded on the surface of the hemisphere (3).
4. The hemispherical valve according to claim 2, wherein: the surface of the hard sealing valve seat is welded with stainless steel, alloy steel, hard alloy or sprayed with wear-resistant and corrosion-resistant hard alloy; the soft sealing valve seat adopts PTFE, modified nylon and PEEK; the rolling pin shaft (12) is hardened.
5. The hemispherical valve according to claim 1, wherein: the upper end of the hand wheel (17) is provided with a protective cover (19), and the valve rod (4) is provided with an indicator (20).
6. The hemispherical valve according to claim 1, wherein: and an oil nozzle is arranged on the outer side of the valve rod nut (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020575824.2U CN212297702U (en) | 2020-04-17 | 2020-04-17 | Friction-free full-bore hemispherical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020575824.2U CN212297702U (en) | 2020-04-17 | 2020-04-17 | Friction-free full-bore hemispherical valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212297702U true CN212297702U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020575824.2U Active CN212297702U (en) | 2020-04-17 | 2020-04-17 | Friction-free full-bore hemispherical valve |
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| CN (1) | CN212297702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116697082A (en) * | 2023-08-07 | 2023-09-05 | 艾坦姆流体控制技术(山东)有限公司 | Pneumatic track ball valve with shock resistance function |
-
2020
- 2020-04-17 CN CN202020575824.2U patent/CN212297702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116697082A (en) * | 2023-08-07 | 2023-09-05 | 艾坦姆流体控制技术(山东)有限公司 | Pneumatic track ball valve with shock resistance function |
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