CN215522048U - Top-mounted eccentric half ball valve - Google Patents

Abstract

The utility model discloses an upper-mounted eccentric half-ball valve which comprises a valve body and a half-ball valve clack, wherein the half-ball valve clack is rotatably mounted in the valve body through a group of valve rod assemblies, a limiting sealing device is arranged at the matching part of the half-ball valve clack and the valve body, and a limiting block is arranged on the limiting sealing device. This eccentric hemisphere valve of upper assembling type through setting up spacing sealing device, has both realized that half ball valve lamella closed position is effective spacing, can also realize good leakproofness simultaneously, and the hemisphere valve lamella can not produce the deformation at the in-process that opens and shuts moreover, can not lead to the valve body to warp yet. The bottom surface of the flow channel is designed to be a streamline smooth cambered surface, the bottom arc line is smoothly connected with the water outlet, so that the fluid flows smoothly, the bottom is not easy to be accumulated with silt, the shell and the hemispherical valve clack have good rigidity and are not deformed, and the structure is light and handy.

Description

Top-mounted eccentric half ball valve

Technical Field

The utility model relates to the technical field of valves, in particular to an upper-mounted eccentric half ball valve.

Background

The eccentric half ball valve is widely applied to urban water supply and drainage, water diversion of water plants, south-to-north water transfer engineering, petroleum, chemical engineering, power plants, sewage treatment and other pipeline systems. The existing upper-mounted eccentric half-ball valve in the market at present has the problems of heavy structure, poor rigidity and easy deformation of a shell and a half-ball valve clack, easy leakage of the valve, air blockage, easy sludge accumulation at the bottom and the like. Especially, the opening and closing of the upper-mounted eccentric half ball valve are realized through eccentricity, and in the closing process of the half ball valve clack, due to the self weight and the eccentricity of the half ball valve clack, the valve clack is closed more and more tightly in the closing process, so that great abrasion is generated between the half ball valve clack and the valve seat, and great influence is generated on the sealing performance of a half ball valve product. In the prior art, the sealing performance is increased by improving a sealing structure, which results in that the structure of the hemispherical valve is more and more complex and heavier.

For example, the chinese patent document (publication date: 14/5/2008, publication number: CN 201059368Y) discloses a two-way sealing top-loading eccentric hemisphere valve, which includes a valve body, a valve rod, a base, a valve seat and a spherical crown, wherein the valve rod and the base are mounted on the upper and lower positions of the valve body, the spherical crown is located inside the valve body, an eccentric shaft connecting the spherical crown and the valve rod is provided inside the valve body, the axis of the eccentric shaft deviates from the center line of the valve flow passage and does not intersect with the center line, and a secondary seal capable of sealing the spherical crown and the valve seat is provided on the spherical crown. The secondary seal is arranged on the contact surface of the spherical crown and the valve seat.

According to the technical scheme, the auxiliary seal is arranged on the spherical crown, when the valve is closed, the auxiliary seal is firstly compressed, and then the spherical crown and the valve seat are subjected to main seal, so that the friction during opening and closing is reduced, and the sealing effect is improved. However, the structure adopts the combined eccentric valve clack of the eccentric shaft and the spherical crown, and the structure is heavy, has poor rigidity and is easy to deform.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the existing eccentric half ball valve has poor sealing performance, the half ball valve product has heavy structure, the shell and the half ball valve clack have poor rigidity and are easy to deform, the valve is easy to leak and air-blocked, and particularly, sludge is easy to be accumulated at the bottom, and the like.

The utility model adopts the technical scheme that the utility model achieves the aim that: the utility model provides an eccentric hemisphere valve of facial make-up, includes valve body and hemisphere valve clack, the hemisphere valve clack rotate through a set of valve rod subassembly and install inside the valve body, hemisphere valve clack and valve body cooperation department be provided with spacing sealing device, spacing sealing device on be provided with the stopper. This eccentric hemisphere valve of upper assembling type, in order to solve the sealing performance of hemisphere valve clack and delivery port and to the spacing of hemisphere valve clack closing position, through set up spacing sealing device in hemisphere valve clack and valve body cooperation department, it is effective spacing both to have realized half ball valve clack closing position, also can not close because of the transition of hemisphere valve clack and produce very big wearing and tearing, thereby produce very big influence to the sealing performance of hemisphere valve product, good leakproofness has been realized, and hemisphere valve clack can not be closed because of the transition and produce the deformation opening and closing the in-process, also can not lead to the valve body to warp.

Preferably, the limiting sealing device comprises an elastic sealing element and a limiting pressure plate, and the limiting block is arranged on the limiting pressure plate. The limiting sealing device comprises an elastic sealing element and a limiting pressing plate, the flexible spherical surface sealing and the rigid surface sealing of the valve are realized through the elastic sealing element and the limiting pressing plate, so that the sealing performance of the valve is improved, and the limiting block is arranged on the limiting pressing plate and can rotate along with the rotation of the hemispherical valve clack, so that the limiting and sealing functions are realized.

Preferably, a valve seat is arranged at the water outlet end of the valve body, the hemispherical valve clack is in sealing fit with the valve seat, the limiting sealing device is arranged on the hemispherical valve clack, and a limiting block is arranged on one side, facing the closing direction of the hemispherical valve clack, of the limiting sealing device. The water outlet end of the valve body is provided with a valve seat, the hemispherical valve clack is matched with the valve seat to close and open the valve body, and the limiting sealing device is provided with a limiting block. The limiting sealing device is arranged on the hemispherical valve clack and rotates along with the hemispherical valve clack, when the hemispherical valve clack rotates from an opening state to a closing state, the valve is located at a closing position, the bottom of the limiting block is in contact with the bottom surface of the inner hole of the valve seat, the hemispherical valve clack is limited to continue to rotate clockwise, the semi-conductive sealing position is prevented from being changed due to transition of the hemispherical valve clack, and the more reliable sealing performance of the valve is realized.

Preferably, a valve seat installation cavity is arranged in the valve body, the valve seat is installed in the valve seat installation cavity and is in sealing connection through a sealing piece, and an inclined matching surface structure is arranged at the matching position of the valve seat and the valve seat installation cavity. Because closing and opening of eccentric half ball valve are realized through the hemisphere valve clack of eccentric settings, the hemisphere valve clack is sealed with the disk seat cooperation at the closure in-process, can make disk seat and valve body cooperation department produce stress concentration phenomenon to the life-span that leads to the valve receives the influence, consequently, sets up slope fitting surface structure in disk seat and disk seat installation cavity cooperation department, with the stress concentration that reduces this department, increases the intensity and the rigidity of valve body, the life of extension valve.

Preferably, the limiting block is in rigid surface sealing connection with the inner wall of the valve seat in the water inlet and outlet direction; the valve seat is characterized in that a sealing groove is formed in the hemispherical valve clack, the elastic sealing element is installed in the sealing groove and is compressed through a limiting pressing plate, and the elastic sealing element is in flexible spherical surface sealing connection with the valve seat. The flexible spherical surface sealing and the rigid surface sealing of the valve are realized through the elastic sealing element and the limiting pressure plate, so that the sealing performance of the valve is improved, and the limiting block is arranged on the limiting pressure plate, so that the limiting function and the sealing function are realized.

Preferably, the bottom surface of the internal flow passage of the valve body is a streamline smooth cambered surface. Through the brand-new design of the bottom surface of the flow channel in the valve body, the streamline design is adopted, the bottom surface of the flow channel is designed into a streamline smooth arc surface, the smooth transition from the water inlet end to the water outlet end is realized, the bottom arc line is smoothly connected with the water outlet, the fluid flow is smooth, the bottom is not easy to form silt, and the problems that the existing hemispherical valve is easy to form silt, the flow is limited and the like are solved effectively.

Preferably, the hemisphere valve clack includes two link ends and sealed valve clack body, sealed valve clack body inside be provided with a plurality of cavitys and a plurality of strengthening rib. The hemisphere valve clack is driven through the valve rod subassembly and is realized opening or closing, consequently, is provided with two link on the hemisphere valve clack for realize being connected with valve rod subassembly and valve body, and the sealed valve clack body is then realized opening or closing the valve. Because the hemisphere valve clack need be opened and closed, consequently, the hemisphere valve clack has certain intensity and rigidity, conveniently opens half again, in order to realize these two purposes simultaneously, is provided with a plurality of cavitys and a plurality of strengthening rib in the sealed valve clack internal portion of hemisphere valve clack, and such structural design can enough satisfy the requirement of the intensity and the rigidity of hemisphere valve clack, has still alleviateed the weight of hemisphere valve clack simultaneously, has saved the material.

Preferably, the outer side surface of the sealing valve flap body is provided with a first plane boss, a second plane boss, a third plane boss and a sealing spherical surface, a transition arc surface is arranged between the first plane boss and the second plane boss, and the second plane boss and the third plane boss are in stepped connection. The outer side surface of the sealing valve clack body is provided with a first plane boss, a second plane boss, a third plane boss and a sealing spherical surface, so that the weight of the sealing valve clack body can be reduced, and meanwhile, the elastic sealing element and the limiting pressing plate are convenient to arrange and realize double sealing.

Preferably, the end parts of the two connecting ends are provided with end planes. The end plane is arranged for facilitating processing, and simultaneously, the fluid medium in the end plane cannot be subjected to centricity change of the flowing direction in the flowing process, so that the medium can flow smoothly.

Preferably, the valve cover is arranged on the upper portion of the valve body, and a plurality of valve cover reinforcing ribs and a plurality of valve cover inner cavities are arranged in the valve cover. This eccentric hemisphere valve of upper assembling type still is provided with a valve gap, and the valve gap is inside also to be provided with a plurality of valve gap strengthening ribs and valve gap inner chamber, when guaranteeing the valve gap rigidity, is favorable to alleviateing the weight of valve gap, save material.

Preferably, the valve cover is provided with an air release structure. In order to solve the problem of valve air blockage in the prior art, an air discharge structure is arranged on the valve cover, and air inside the valve body can be discharged through the air discharge structure so as to realize the function of pipeline air discharge during testing and trial operation.

The utility model has the beneficial effects that: this eccentric hemisphere valve of upper assembling type through set up spacing sealing device in hemisphere valve clack and valve body cooperation department, has both realized that half ball valve lamella closed position is effective spacing, has realized good leakproofness again, and hemisphere valve clack can not be closed because of the transition and produce the deformation in addition opening and closing the in-process, can not lead to the valve body to warp yet. According to the upper-mounted eccentric half ball valve, the bottom surface of the flow channel is designed to be a streamline smooth cambered surface, the bottom arc line is smoothly connected with the water outlet, fluid flows smoothly, silt is not easy to accumulate at the bottom, the shell and the half ball valve clack are good in rigidity, free of deformation and light in structure.

Drawings

FIG. 1 is a schematic structural view of a top-loading eccentric half-ball valve of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a schematic structural view of the upper-mounted eccentric half-ball valve in an open state;

in the figure: 1. the valve body, 2, a half-ball valve clack, 3, a valve rod assembly, 4, a valve cover, 5, a streamline smooth cambered surface, 6, a limit sealing device, 7, a valve seat, 8, a limit block, 9, a valve seat installation cavity, 10, a sealing element, 11, an inclined matching surface structure, 12, an elastic sealing element, 13, a limit pressure plate, 14, a sealing groove, 15, a connecting end, 16, a sealing valve clack body, 17, a cavity, 18, a reinforcing rib, 19, a main valve rod assembly, 20, an auxiliary valve rod assembly, 21, a first plane boss, 22, a second plane boss, 23, a third plane boss, 24, a sealing spherical surface, 25, a transition cambered surface, 26, an end plane, 27, a valve cover reinforcing rib, 28, a valve cover inner cavity, 29, a deflation structure, 30, an air release hole, 31, a plug head, 32, a cavity chamfer, 33, a valve seat chamfer, 34, a connecting body, 35, a sealing body, 36, a clamping platform, 37 and a water inlet, 38. and (7) a water outlet.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments with reference to the accompanying drawings.

Example 1:

in the embodiment shown in fig. 1, 2 and 4, the top-mounted eccentric half ball valve comprises a valve body 1, a half ball valve clack 2 and a valve rod assembly 3 which are installed inside the valve body 1, and a valve cover 4 installed on the upper portion of the valve body 1, wherein the half ball valve clack 2 can rotate around the axial center line of the valve rod assembly under the driving of the operating force of the valve rod assembly 3 to realize the opening and closing of the valve, and the axial center line of the valve rod assembly and the center line of the valve body 1 are eccentric and are located below the center line of the valve body 1.

This top-mounted eccentric half-ball valve, hemisphere valve clack 2 rotate through valve rod assembly 3 and install at the valve body portion, 1 inside runner's of valve body bottom surface for streamlined smooth cambered surface 5, hemisphere valve clack 2 and 1 cooperation department of valve body be provided with spacing sealing device 6.

The water outlet end of the valve body 1 is provided with a valve seat 7, the hemisphere valve clack 2 is in sealing fit with the valve seat 7, the limiting sealing device 6 is arranged on the hemisphere valve clack 2, and a limiting block 8 is arranged on the limiting sealing device and faces one side of the closing direction of the hemisphere valve clack 2. In this embodiment, be provided with water inlet 37 and delivery port 38 along the horizontal direction on the valve body 1, water inlet and delivery port are cylindrical structure, water outlet end at valve body 1 is provided with a disk seat 7, hemisphere valve clack 2 realizes closing and opening valve body 1 with the cooperation of disk seat 4, be provided with stopper 8 on the spacing sealing device 6, spacing sealing device sets up on the hemisphere valve clack and rotates along with the hemisphere valve clack, rotate to the closure state when making at the valve in the closed position when the hemisphere valve clack from the open mode, the bottom and the disk seat hole bottom surface contact of stopper, continue clockwise rotation with the limited hemisphere valve clack, prevent that the hemisphere valve clack from passing through to close the fine and close the change of sealing position of semiconductor, the more reliable sealing performance of valve has been realized.

The limiting and sealing device 6 comprises an elastic sealing element 12 and a limiting pressure plate 13, the limiting block 8 is arranged on the limiting pressure plate 13, and the limiting block 8 is in rigid surface sealing connection with the inner wall of the valve seat 7 in the water inlet and outlet direction; the hemispherical valve clack 2 is provided with a sealing groove 14, the elastic sealing element 12 is installed in the sealing groove 14 and is pressed tightly through a limiting pressing plate 13, and the elastic sealing element 12 is in flexible spherical surface sealing connection with the valve seat 7. In this embodiment, the limiting sealing device 6 includes an elastic sealing element 12 and a limiting pressing plate 13, the limiting block 8 and the limiting pressing plate 13 are integrally arranged, the flexible spherical surface sealing and the rigid surface sealing of the valve are realized through the elastic sealing element 12 and the limiting pressing plate 13, so that the sealing performance of the valve is improved, and the limiting block is arranged on the limiting pressing plate, so that the limiting function and the sealing function are realized. In this embodiment, the elastic sealing element 12 includes a connecting body 34 and a sealing body 35 that are integrally arranged, a clamping table 36 is arranged between the connecting body and the sealing body, the sealing body is elastically sealed with the sealing surface of the valve seat, and the clamping table is matched with the sealing groove 14 and the limiting pressure plate to limit the elastic sealing element.

The valve body 1 inside be provided with valve seat installation cavity 9, valve seat 7 install in valve seat installation cavity 9 and through sealing member 10 sealing connection, valve seat 7 and valve seat installation cavity 9 cooperation department be provided with slope fitting surface structure 11. In this embodiment, sealing member 10 adopts O type sealing washer, of course, sealing member 10 also can other sealing members such as sealing strip etc., because the closing and opening of eccentric hemisphere valve are realized through the hemisphere valve clack 2 of eccentric settings, hemisphere valve clack 2 is sealed with the cooperation of disk seat 7 in the closing process, can make disk seat 7 and 1 cooperation department of valve body produce the stress concentration phenomenon, thereby lead to the life-span of valve to receive the influence, consequently, set up slope fitting surface structure 11 in disk seat and disk seat installation cavity cooperation department, in order to reduce the stress concentration of this department, increase the intensity and the rigidity of valve body, the life of extension valve. In this embodiment, the inclined mating surface structure 11 includes a larger cavity chamfer 32 disposed on the valve seat installation cavity and a larger valve seat chamfer 33 disposed on the valve seat, and through the cooperation of the valve seat chamfer and the cavity chamfer, the stress concentration at the corner is reduced, and the strength and rigidity of the valve body are enhanced.

The hemispherical valve clack 2 comprises two connecting ends 15 and a sealing valve clack body 16, and a plurality of cavities 17 and a plurality of reinforcing ribs 18 are arranged in the sealing valve clack body 16. In this embodiment, the hemispherical valve flap 2 is driven by the valve rod assembly to open or close, as shown in fig. 3, the valve rod assembly includes a main valve rod assembly 19 and an auxiliary valve rod assembly 20, and the hemispherical valve flap 2 needs to be connected to the main valve rod assembly and the auxiliary valve rod assembly, so that two connecting ends 15 are provided on the hemispherical valve flap 2 for connecting the valve rod assembly and the valve body, and the flap-sealing valve body 16 is matched with the water outlet of the valve to open or close the valve. Because hemisphere valve clack 2 need be opened and close, consequently, hemisphere valve clack had both certain intensity and rigidity, will conveniently open half again, in order to realize these two purposes simultaneously, is provided with a plurality of cavities 17 and a plurality of strengthening rib 18 in the sealed valve clack internal portion of hemisphere valve clack, such structural design can enough satisfy the requirement of the intensity and the rigidity of hemisphere valve clack, has still alleviateed hemisphere valve clack's weight simultaneously, has saved the material.

The outer side surface of the sealing valve flap 16 is provided with a first plane boss 21, a second plane boss 22, a third plane boss 23 and a sealing spherical surface 24, a transition arc surface 25 is arranged between the first plane boss 21 and the second plane boss 22, and the second plane boss 22 and the third plane boss 23 are in stepped connection. The lateral surface of the sealing valve clack body is provided with the structure that the first plane boss 21 makes things convenient for the processing of the sealing valve clack body, and simultaneously still make things convenient for the maintenance, the lightweight design of the sealing valve clack body has both been realized to the setting of first plane boss and second plane boss and its transition cambered surface, and simultaneously can also guarantee its bulk rigidity, and the sealed sphere then embodies the key sealing effect of sealed valve clack, the structure of sealing valve clack body 16 both can alleviate the weight of the sealing valve clack body, still make things convenient for the setting of elastic sealing element and spacing clamp plate and realize double seal simultaneously.

The ends of the two connecting ends 15 are provided with end planes 26. The flat end surfaces 26 are provided for convenience of processing and for ensuring that the fluid medium therein does not change its flow direction during the flowing process, thereby making the medium flow smoothly.

The valve cover 4 is arranged on the upper portion of the valve body 1, an O-shaped ring is arranged between the valve cover 4 and the valve body 1 to achieve sealing between the valve cover 4 and the valve body 1, and a plurality of valve cover reinforcing ribs 27 and a plurality of valve cover inner cavities 28 are arranged inside the valve cover 4. This eccentric hemisphere valve of upper assembling formula, valve gap 4 is inside also to be provided with a plurality of valve gap strengthening ribs and valve gap inner chamber, when guaranteeing the valve gap rigidity, is favorable to alleviateing the weight of valve gap, save material.

The valve cover 4 is provided with an air discharge structure 29. In order to solve the problem of valve air blockage in the prior art, an air discharge structure is arranged on the valve cover, and air inside the valve body can be discharged through the air discharge structure so as to realize the function of pipeline air discharge during testing and trial operation. In this embodiment, the air release structure 29 includes an air release hole 30 provided on the valve cover and a plug 31 provided inside the air release hole. The upper portion of valve gap 4 is equipped with two gas release holes 30, and every gas release hole is inside to be provided with a chock plug 31, opens two chock plugs 31 on the valve gap 4, can get rid of the inside air of valve body 1 to pipeline carminative function when realizing test, the trial operation prevents the stifled phenomenon of gas.

This eccentric hemisphere valve of facial make-up formula adopts streamlined design through the brand-new design to the inside runner bottom surface of valve body, is streamlined smooth cambered surface with runner bottom surface design, from the end smooth transition of intaking to the play water end, bottom pitch arc and delivery port smooth connection for fluid flow is unblocked, and the difficult silt that ties in bottom has effectively solved current hemisphere valve and has easily tied up silt, leads to the limited scheduling problem of flow. This eccentric hemisphere valve of upper assembling type has put spacingly in order to solve the sealing performance of hemisphere valve clack and delivery port and half ball valve lamella closed position, sets up spacing sealing device through locating at hemisphere valve clack and valve body cooperation, has both realized effectively spacingly to half ball valve lamella closed position, can also realize good leakproofness simultaneously, and hemisphere valve clack can not produce the deformation at the in-process that opens and shuts moreover, also can not lead to the valve body to warp.

The embodiments described above are only a part of the embodiments of the present invention, and not all of them. Meanwhile, based on the embodiments described in the present invention, all other embodiments obtained on the basis of the technical solutions of the present application by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an eccentric hemisphere valve of upper assembling formula, includes valve body (1) and hemisphere valve clack (2), hemisphere valve clack (2) rotate through a set of valve rod set spare (3) and install inside valve body (1), its characterized in that: the valve is characterized in that a limiting sealing device (6) is arranged at the matching position of the hemispherical valve clack (2) and the valve body (1), and a limiting block (8) is arranged on the limiting sealing device.

2. The upper-mounted eccentric half ball valve as claimed in claim 1, wherein: the limiting sealing device (6) comprises an elastic sealing element (12) and a limiting pressing plate (13), and the limiting block (8) is arranged on the limiting pressing plate (13).

3. The upper-mounted eccentric half ball valve as claimed in claim 2, wherein: the water outlet end of the valve body (1) is provided with a valve seat (7), the hemisphere valve clack (2) is in sealing fit with the valve seat (7), and the limiting sealing device (6) is arranged on the hemisphere valve clack (2).

4. The upper-mounted eccentric half ball valve as claimed in claim 3, wherein: valve body (1) inside be provided with disk seat installation cavity (9), disk seat (7) install inside disk seat installation cavity (9) and through a sealing member (10) sealing connection, disk seat (7) and disk seat installation cavity (9) cooperation department be provided with slope fitting surface structure (11).

5. The upper-mounted eccentric half ball valve as claimed in claim 3, wherein: the limiting block (8) is in rigid surface sealing connection with the inner wall of the valve seat (7) in the water inlet and outlet direction; the hemispherical valve clack (2) on be provided with seal groove (14), elastic sealing element (12) install in seal groove (14) and compress tightly through spacing clamp plate (13), elastic sealing element (12) be flexible spherical surface sealing connection with valve seat (7).

6. The upper-mounted eccentric half-ball valve according to any one of claims 1 to 5, wherein: the bottom surface of the internal flow passage of the valve body (1) is a streamline smooth cambered surface (5).

7. The upper-mounted eccentric half-ball valve according to any one of claims 1 to 5, wherein: the semi-sphere valve clack (2) comprises two connecting ends (15) and a sealing valve clack body (16), and a plurality of cavities (17) and a plurality of reinforcing ribs (18) are arranged in the sealing valve clack body (16).

8. The upper-mounted eccentric half ball valve as claimed in claim 7, wherein: the outer side surface of the sealing valve clack body (16) is provided with a first plane boss (21), a second plane boss (22), a third plane boss (23) and a sealing spherical surface (24), a transition arc surface (25) is arranged between the first plane boss (21) and the second plane boss (22), and the second plane boss (22) is in stepped connection with the third plane boss (23).

9. The upper-mounted eccentric half ball valve as claimed in claim 7, wherein: the end parts of the two connecting ends (15) are provided with end planes (26).

10. The upper-mounted eccentric half-ball valve according to any one of claims 1 to 5, wherein: the valve cover (4) is arranged at the upper part of the valve body (1), and a plurality of valve cover reinforcing ribs (27) and a plurality of valve cover inner cavities (28) are arranged in the valve cover (4); the valve cover (4) is provided with an air discharge structure (29).

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