CN215720961U - Eccentric half ball valve - Google Patents
Eccentric half ball valve Download PDFInfo
- Publication number
- CN215720961U CN215720961U CN202121900815.7U CN202121900815U CN215720961U CN 215720961 U CN215720961 U CN 215720961U CN 202121900815 U CN202121900815 U CN 202121900815U CN 215720961 U CN215720961 U CN 215720961U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- main valve
- auxiliary
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model discloses an eccentric half ball valve, which comprises a valve body and a half ball valve clack rotatably arranged in the valve body through a valve rod assembly, wherein a bidirectional aligning structure is arranged on the valve rod assembly, the valve rod assembly comprises a main valve rod assembly and an auxiliary valve rod assembly, and the bidirectional aligning structure comprises a main valve rod assembly aligning structure and an auxiliary valve rod assembly aligning structure; the main valve rod component is provided with a main valve rod multiple sealing structure, and the auxiliary valve rod component is provided with an auxiliary valve rod multiple sealing structure. This eccentric half ball valve through two-way aligning structure for the hemisphere valve clack can carry out the regulation of horizontal central point through two directions and put, can effectively eliminate position error and assembly error between each spare part in the course of working, realizes the accurate regulation of half ball valve horizontal central point position, thereby improves eccentric half ball valve's motion accuracy and product property ability. The structure of the valve rod component is utilized to arrange multiple sealing, so that the simplification of a sealing structure is realized.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an 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 eccentric half ball valve in the market at present has errors in the positions and the assembly among all parts in the machining process, so that the movement precision and the product performance of the half ball valve cannot be improved. In addition, in order to improve the sealing performance of the main valve rod and the auxiliary valve rod of the hemispherical valve, the existing eccentric hemispherical valve sealing structure is more and more complex in arrangement, so that the structure of the hemispherical valve is more and more complex.
For example, chinese patent literature (published: 8/3/2021, publication No. CN 213871204U) discloses a horizontal-shaft eccentric half-ball valve, in which a valve core is installed in a horizontal-shaft structure, and the axis of the valve rod is perpendicular to the direction of medium flow in the valve body and is horizontally disposed, so as to occupy no lower end of the flow passage, so that the lower end of the flow passage can be more gradual than that of the vertical eccentric half-ball valve, and the flow resistance is reduced. The valve core is provided with a concentric cylindrical boss, a sealing ring is sleeved in a gap on the boss, the sealing ring is provided with a spherical-crown-shaped sealing surface, an air bag ring is arranged in a clamping gap formed by the boss and the sealing ring, the sealing ring and the valve core are fixed through a fixing assembly, the valve core sealing spherical crown and the valve seat center can be adjusted to be concentric during assembly, machining errors are overcome, and effective sealing is guaranteed.
According to the technical scheme, concentric adjustment is realized by additionally arranging an air bag ring, although the adjustment can be realized by the technical scheme, the adjustment is realized in a one-way manner, high-precision adjustment is difficult to achieve in the adjustment process, and the structure is relatively complex and is not beneficial to the simplified design of the valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the movement precision and the product performance of a hemispherical valve cannot be improved, the sealing structure of a main valve rod and an auxiliary valve rod is complicated and the like due to the position and the device error of parts of the existing hemispherical valve product.
The utility model adopts the technical scheme that the utility model achieves the aim that: an eccentric half ball valve comprises a valve body and a half ball valve clack rotatably mounted in the valve body through a valve rod assembly, wherein a two-way aligning structure is arranged on the valve rod assembly, the valve rod assembly comprises a main valve rod assembly and an auxiliary valve rod assembly, and the two-way aligning structure comprises a main valve rod assembly aligning structure and an auxiliary valve rod assembly aligning structure; the main valve rod component is provided with a main valve rod multiple sealing structure, and the auxiliary valve rod component is provided with an auxiliary valve rod multiple sealing structure. This eccentric half ball valve through set up aligning structure respectively on main valve stem subassembly and vice valve stem subassembly for the hemisphere valve clack can carry out the regulation of horizontal central point through two directions and put, can effectively eliminate position error and assembly error between each spare part in the course of working, realizes the accurate regulation of half ball valve horizontal central point position, thereby improves the motion accuracy and the product property ability of eccentric half ball valve. And utilize the structure of valve rod subassembly self to set up multiple sealing respectively on main valve rod subassembly and vice valve rod subassembly, realized seal structure simplification, the purpose of the sealed effect quality has effectively promoted eccentric hemisphere valve's sealing performance and life.
Preferably, a main valve rod assembly mounting cavity and an auxiliary valve rod assembly mounting cavity are coaxially arranged on the valve body; the main valve rod component mounting cavity is a four-stage step mounting cavity; the auxiliary valve rod assembly mounting cavity is a mounting through hole. The coaxial line sets up the coaxiality that main valve rod subassembly installation cavity and vice valve rod subassembly installation cavity can guarantee the installation on the valve body to and accurate nature during the regulation, and set up main valve rod subassembly installation cavity into level four ladder installation cavity and cooperate the main valve rod subassembly to realize sealed and the needs of regulation and design, vice valve rod subassembly installation cavity sets up to an installation through-hole, when making things convenient for vice valve rod subassembly installation, also sets up for the multiple seal structure of cooperation vice valve rod.
Preferably, the main valve stem assembly comprises a main valve stem, a main valve stem composite bearing, a main valve stem copper sleeve, a main valve stem inner end cover and a main valve stem outer end cover. The main valve rod component mainly comprises a main valve rod, a main valve rod composite bearing and a main valve rod copper sleeve, good sealing performance can be achieved while the transmission function of the main valve rod is achieved, meanwhile, structural fixing is achieved through the arrangement of an inner end cover of the main valve rod and an outer end cover of the main valve rod, and the arrangement of a main valve rod component aligning structure can be facilitated.
Preferably, the main valve stem assembly aligning structure comprises an aligning balance surface arranged on the main valve stem, an adjusting part arranged on the outer end cover of the main valve stem and a locking part. The main valve rod assembly aligning structure is mainly realized by an aligning plane arranged on the main valve rod and an adjusting part and a locking part arranged on the outer end rod of the main valve rod, the structure can realize the leveling of the horizontal center position of the hemispherical valve clack, and the structure is simple, convenient to set and operate, and more favorable for realizing the precision reduction of parts and the light weight of equipment.
Preferably, the main valve stem multiple sealing structure comprises a first seal arranged between the main valve stem and the valve body, a second double seal arranged between the main valve stem copper sleeve and the valve body, and a triple dynamic seal arranged between the main valve stem and the main valve stem copper sleeve. The main valve rod multi-sealing structure can be designed by designing the structure among the main valve rod, the valve body and the main valve rod copper sleeve, so that the main valve rod and one end of the valve body close to the interior of the valve body realize first sealing to prevent fluid medium from entering the main valve rod composite bearing, thereby keeping a good lubricating state between the main valve rod composite bearing and the main valve rod all the time and prolonging the service life of the valve; the main valve rod copper sleeve and the valve body are in double sealing structure and are matched with the main valve rod copper sleeve structure, so that the outer sealing between the main valve rod and the valve body is realized, three sealing grooves are formed in the inner wall of the main valve rod copper sleeve, and a dynamic sealing ring is arranged in each sealing groove, so that the dynamic sealing in the rotating process of the main valve rod is realized. The main valve rod multi-sealing structure fully utilizes the main valve rod and the main valve rod copper sleeve, realizes inner sealing, outer sealing and dynamic sealing, and has the advantages of simple structure, convenient arrangement and good sealing effect.
Preferably, the main valve rod comprises a connecting part, a transmission part and a fixing part which are arranged in a stepped mode, the shaft diameter of the connecting part is smaller than that of the transmission part, and the shaft diameter of the fixing part is smaller than that of the transmission part and smaller than that of the connecting part. The main valve rod is in a step type and is provided with a connecting part, a transmission part and a fixing part, so that the integrated type and the fine design are realized by integrating sealing, aligning and transmission functions.
Preferably, the fixing part on the main valve rod penetrates through the valve body to be connected with the hemispherical valve clack and is fixed through the inner end cover; the end part of the transmission part extends into the valve body and is abutted against the hemispherical valve clack; the transmission part is rotationally connected with the valve body through a main valve rod composite bearing, the main valve rod copper sleeve is sleeved on the connecting part, and the outer diameter of the main valve rod copper sleeve is equal to that of the main valve rod composite bearing; the outer cover of the main valve rod is sleeved on the connecting part outside the copper sleeve of the main valve rod and is fixedly connected with the valve body.
Preferably, the auxiliary valve rod assembly comprises an auxiliary valve rod, an auxiliary valve rod composite bearing, an inner end cover of the auxiliary valve rod and an outer end cover of the auxiliary valve rod; the auxiliary valve rod assembly aligning structure comprises an aligning end face and an axial aligning pre-tightening piece, wherein the aligning end face is arranged on the auxiliary valve rod and matched with the hemispherical valve clack, and the axial aligning pre-tightening piece is arranged on the outer end cover of the auxiliary valve rod. The auxiliary valve rod component mainly comprises an auxiliary valve rod and an auxiliary valve rod composite bearing, the opening and closing of the hemispherical valve clack are realized through the auxiliary valve rod and the auxiliary valve rod composite bearing, and meanwhile, the adjustment of the horizontal center position of the hemispherical valve clack from the direction of the auxiliary valve rod is realized through the structure of the auxiliary valve rod and an axial aligning pre-tightening piece.
Preferably, the multiple sealing structure of the auxiliary valve rod comprises multiple static seals arranged between the auxiliary valve rod and the valve body and double dynamic seals arranged between the auxiliary valve rod and the hemispherical valve clack. The multiple sealing structure of the auxiliary valve rod also realizes the sealing of the valve body and the auxiliary valve rod by utilizing the sealing structure between the auxiliary valve rod and the valve body, and simultaneously realizes the sealing of the joint of the auxiliary valve rod and the hemispherical valve clack by the sealing structure between the auxiliary valve rod and the hemispherical valve clack so as to ensure a good lubricating state between the auxiliary valve rod and the composite bearing of the auxiliary valve rod and prolong the service life of a product.
Preferably, the auxiliary valve rod comprises a valve body connecting part and a valve clack connecting part which are arranged in a stepped structure, the shaft diameter of the valve body connecting part is larger than that of the valve clack connecting part, and the aligning end face is arranged at the connecting part of the valve body connecting part and the valve clack connecting part. The auxiliary valve rod is mainly matched with the valve body and the hemispherical valve clack, and meanwhile, the auxiliary valve rod can also be of an aligning structure, so that the auxiliary valve rod is provided with two parts, and the two parts are arranged to form aligning end faces through different shaft diameters of the auxiliary valve rod so as to realize the arrangement of the aligning structure at one end of the auxiliary valve rod.
The utility model has the beneficial effects that: this eccentric half ball valve through two-way aligning structure for the hemisphere valve clack can carry out the regulation of horizontal central point through two directions and put, can effectively eliminate position error and assembly error between each spare part in the course of working, realizes the accurate regulation of half ball valve horizontal central point position, thereby improves eccentric half ball valve's motion accuracy and product property ability. And the main valve rod component and the auxiliary valve rod component are respectively provided with multiple seals by utilizing the self structure of the valve rod component, so that the simplification of a sealing structure is realized, and the sealing performance and the service life of the eccentric half ball valve are effectively improved.
Drawings
FIG. 1 is a schematic diagram of an eccentric half ball valve according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is an enlarged view at C of FIG. 2;
in the figure: 1. the valve comprises a valve body, 2, a hemispherical valve clack, 3, a valve cover, 4, a main valve rod assembly, 5, an auxiliary valve rod assembly, 6, a main valve rod connecting end, 7, an auxiliary valve rod connecting end, 10, a main valve rod assembly mounting cavity, 10-1, a primary mounting cavity, 10-2, a secondary mounting cavity, 10-3, a tertiary mounting cavity, 10-4, a quaternary mounting cavity, 11, an auxiliary valve rod assembly mounting cavity, 12, a main valve rod, 12-1, a connecting part, 12-2, a transmission part, 12-3, a fixing part, 12-4, a self-aligning balance surface, 13, a main valve rod composite bearing, 14, a main valve rod copper sleeve, 15, a main rod inner end cover, 16, a main rod outer end cover, 17, an adjusting part, 18, a locking part, 19, a first seal, 20, a second double seal, 21, a triple dynamic seal, 22, an auxiliary valve rod, 22-1, The valve body comprises an aligning end face 22-2, a valve body connecting part 22-3, a valve clack connecting part 23, an auxiliary valve rod composite bearing 24, an auxiliary valve rod inner end cover 25, an auxiliary valve rod outer end cover 26, an axial aligning preload piece 8, multiple static seals and 9 double dynamic seals.
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 and 2, an eccentric half ball valve comprises a valve body 1, a half ball valve clack 2 and a valve rod assembly which are installed inside the valve body 1, wherein the half ball valve clack 2 is installed inside the valve body 1 through the valve rod assembly in a rotating mode, the valve cover 3 is installed on the upper portion of the valve body 1, the center line of the valve cover 3 is perpendicular to the axis of the valve rod assembly and the center line of the valve body 1 in space, the half ball valve clack 2 can rotate around the axis center line of the valve rod assembly under the driving of the operating force of the valve rod assembly to achieve opening and closing of the valve, the axis center line of the valve rod assembly and the center line of the valve body 1 are eccentric, and the axis center line of the valve rod assembly is located below the center line of the valve body 1.
According to the eccentric half ball valve, the valve rod assembly is provided with a two-way aligning structure, the valve rod assembly comprises a main valve rod assembly 4 and an auxiliary valve rod assembly 5, and the two-way aligning structure comprises a main valve rod assembly aligning structure and an auxiliary valve rod assembly aligning structure; the main valve rod assembly 4 is provided with a main valve rod multiple sealing structure, and the auxiliary valve rod assembly 5 is provided with an auxiliary valve rod multiple sealing structure. Set up main valve rod link 6 and vice valve rod link 7 on the hemisphere valve clack 2, main valve rod subassembly 4 and vice valve rod subassembly 5 are connected with main valve rod link 6 and vice valve rod link 7 respectively.
A main valve rod assembly mounting cavity 10 and an auxiliary valve rod assembly mounting cavity 11 are coaxially arranged on the valve body 1; the main valve rod component mounting cavity 10 is a four-stage ladder mounting cavity; the auxiliary valve rod assembly mounting cavity 11 is a mounting through hole. The coaxial line sets up main valve pole subassembly installation cavity 10 and vice valve stem subassembly installation cavity 11 on valve body 1 and can guarantee the axiality of installation to and accurate nature during the regulation, and sets up main valve pole subassembly installation cavity into the needs that the level four ladder installation cavity realizes sealing and regulation and designs, and vice valve pole subassembly installation cavity sets up to a mounting hole, when making things convenient for the installation of vice valve pole subassembly, also sets up for the multiple seal structure of cooperation vice valve pole. In this embodiment, the main valve stem component installation cavity 10 includes a first-stage installation cavity 10-1, a second-stage installation cavity 10-2, a third-stage installation cavity 10-3 and a fourth-stage installation cavity 10-4, which are sequentially arranged inside the valve body outwards.
The main valve rod assembly 4 comprises a main valve rod 12, a main valve rod composite bearing 13, a main valve rod copper sleeve 14, a main valve rod inner end cover 15 and a main valve rod outer end cover 16. The main valve rod component mainly comprises a main valve rod, a main valve rod composite bearing and a main valve rod copper sleeve, the transmission function of the main valve rod is realized, meanwhile, good sealing performance can be realized, meanwhile, structural fixation is realized through the arrangement of an inner end cover of the main valve rod and an outer end cover of the main valve rod, and the arrangement of a main valve rod component aligning structure is facilitated.
As shown in FIG. 3, the main valve stem 12 includes a connecting portion 12-1, a transmission portion 12-2 and a fixing portion 12-3, the connecting portion 12-1 has a smaller axial diameter than the transmission portion 12-2, and the fixing portion 12-3 has a smaller axial diameter than the transmission portion 12-2 and smaller axial diameter than the connecting portion 12-1. The main valve rod is in a step type and is provided with a connecting part, a transmission part and a fixing part, so that the integrated type and the fine design are realized by integrating sealing, aligning and transmission functions. The fixed part 12-3 on the main valve rod 12 penetrates through the valve body 1 to be connected with the hemispherical valve clack 2 and is fixed through the inner end cover 15 of the main valve rod; the end of the transmission part 12-2 extends into the valve body 1 and is abutted with the hemispherical valve clack 2; the transmission part 12-2 is rotatably connected with the valve body 1 through a main valve rod composite bearing 13, the main valve rod copper sleeve 14 is sleeved on the connecting part 12-1, and the outer diameter of the main valve rod copper sleeve is equal to the outer diameter of the main valve rod composite bearing 13; the outer end cover 16 of the main valve rod is sleeved on the connecting part 12-1 outside the main valve rod copper sleeve 14 and is fixedly connected with the valve body 1.
The main valve rod assembly aligning structure comprises an aligning balance surface 12-4 arranged on the main valve rod, an adjusting part 17 arranged on an outer end cover 16 of the main valve rod and a locking part 18. The main valve rod assembly aligning structure is mainly realized by an aligning plane arranged on the main valve rod and an adjusting part and a locking part arranged on the outer end rod of the main valve rod, the structure can realize the leveling of the horizontal center position of the hemispherical valve clack, and the structure is simple, convenient to set and operate, and more favorable for realizing the precision reduction of parts and the light weight of equipment.
In this embodiment, a main valve rod 12 penetrates through a main valve rod assembly mounting cavity 10 from outside to inside, a fixing portion 12-3 on the main valve rod is tightly matched with a hemispherical valve clack 2, the fixing portion 12-3 is fixed at the end portion through an inner end cover 15 of the main valve rod, an aligning balance surface 12-4 of the end surface of a main transmission portion and the fixing portion is abutted against the hemispherical valve clack 2, the horizontal center position of the hemispherical valve clack 2 can be adjusted through the aligning balance surface 12-4, the outside of the transmission portion 12-2 on the main valve rod is rotatably matched with a main valve rod composite bearing 13, a main valve rod copper sleeve 14 is sleeved on a connecting portion 12-1 of the connecting portion of the main valve rod and the transmission portion, the inner end of the main valve rod copper sleeve is abutted against the end surface of the connecting portion of the main valve rod and the transmission portion, and the outer end portion of the main valve rod copper sleeve is fixed through the outer end cover of the main valve rod.
The main valve stem multiple seal structure comprises a first seal 19 arranged between the main valve stem 12 and the valve body 1, a second double seal 20 arranged between the main valve stem copper sleeve 14 and the valve body 1, and a triple dynamic seal 21 arranged between the main valve stem 12 and the main valve stem copper sleeve 14. The main valve rod multi-sealing structure can be designed by designing the structure among the main valve rod, the valve body and the main valve rod copper sleeve, so that the main valve rod and one end of the valve body close to the interior of the valve body realize first sealing to prevent fluid medium from entering the main valve rod composite bearing, thereby keeping a good lubricating state between the main valve rod composite bearing and the main valve rod all the time and prolonging the service life of the valve; the main valve rod copper sleeve and the valve body are in double sealing structure and are matched with the main valve rod copper sleeve structure, so that the outer sealing between the main valve rod and the valve body is realized, three sealing grooves are formed in the inner wall of the main valve rod copper sleeve, and a dynamic sealing ring is arranged in each sealing groove, so that the dynamic sealing in the rotating process of the main valve rod is realized. The main valve rod multi-sealing structure fully utilizes the main valve rod and the main valve rod copper sleeve, realizes inner sealing, outer sealing and dynamic sealing, and has the advantages of simple structure, convenient arrangement and good sealing effect.
In this embodiment, the first seal 19 is formed by forming a seal groove on the circumference of the end of the transmission part 12-2 of the main valve stem 12 close to the fixing part 12-3, disposing a seal ring inside the seal groove to seal the main valve stem and the valve body, the seal ring cooperating with the inner wall of the first-stage mounting cavity 10-1 on the valve body to seal, the main valve stem composite bearing 13 and the main valve stem copper bush 14 being disposed inside the second-stage mounting cavity 10-2 from the inside to the outside, the main valve stem copper bush 14 cooperating with the connecting part 12-1, the main valve stem outer end cap 16 being disposed inside the third-stage mounting cavity 10-3, and the inside of the fourth-stage mounting cavity 10-4 being disposed to meet the need of installation and avoidance. The second double seal 20 is specifically that two seal grooves are formed in the outer wall of the main valve stem copper sleeve 14, seal rings are arranged in the seal grooves, sealing is achieved through the cooperation of the seal rings and the second-stage installation cavity 10-2, the triple dynamic seal 21 is that three seal grooves are formed in the inner wall of the main valve stem copper sleeve 14, in order to achieve the strength requirement of the main valve stem copper sleeve, the inner seal groove and the outer seal groove are arranged in a staggered mode, and dynamic seal rings are respectively arranged in the three seal grooves, so that dynamic sealing of the main valve stem is achieved.
As shown in fig. 4, the secondary valve stem assembly 5 comprises a secondary valve stem 22, a secondary valve stem composite bearing 23, a secondary valve stem inner end cap 24 and a secondary valve stem outer end cap 25; the auxiliary valve rod assembly aligning structure comprises an aligning end face 22-1 arranged on the auxiliary valve rod 22 and matched with the hemispherical valve clack 2 and an axial aligning preload piece 26 arranged on an outer end cover 25 of the auxiliary valve rod. The auxiliary valve rod component mainly comprises an auxiliary valve rod and an auxiliary valve rod composite bearing, the opening and closing of the hemispherical valve clack are realized through the auxiliary valve rod and the auxiliary valve rod composite bearing, and meanwhile, the adjustment of the horizontal center position of the hemispherical valve clack from the direction of the auxiliary valve rod is realized through the structure of the auxiliary valve rod and an axial aligning pre-tightening piece.
The multiple sealing structure of the auxiliary valve rod comprises a multiple static seal 8 arranged between the auxiliary valve rod 22 and the valve body 1 and a double dynamic seal 9 arranged between the auxiliary valve rod 22 and the hemispherical valve clack 2. The multiple sealing structure of the auxiliary valve rod also realizes the sealing of the valve body and the auxiliary valve rod by utilizing the sealing structure between the auxiliary valve rod and the valve body, and simultaneously realizes the sealing of the joint of the auxiliary valve rod and the hemispherical valve clack by the sealing structure between the auxiliary valve rod and the hemispherical valve clack so as to ensure a good lubricating state between the auxiliary valve rod and the composite bearing of the auxiliary valve rod and prolong the service life of a product.
The auxiliary valve rod 22 comprises a valve body connecting part 22-2 and a valve clack connecting part 22-3 which are arranged in a stepped structure, the shaft diameter of the valve body connecting part 22-2 is larger than that of the valve clack connecting part 22-3, and the aligning end face 22-1 is arranged at the connecting part of the valve body connecting part and the valve clack connecting part. The auxiliary valve rod is mainly matched with the valve body and the hemispherical valve clack, and meanwhile, the auxiliary valve rod can also be of an aligning structure, so that the auxiliary valve rod is provided with two parts, and the two parts are arranged to form aligning end faces through different shaft diameters of the auxiliary valve rod so as to realize the arrangement of the aligning structure at one end of the auxiliary valve rod.
In this embodiment, three seal grooves are formed in the outer circumference of the valve body connecting portion 22-2 of the auxiliary valve rod 22, and seal rings are respectively disposed in the seal grooves, thereby realizing multiple static seals between the auxiliary valve rod and the valve body. Two ends of the valve clack connecting part 22-3 are respectively provided with a sealing groove, and a sealing ring is arranged in the sealing groove, so that double dynamic sealing between the auxiliary valve rod and the hemispherical valve clack 2 is realized.
The main valve rod 12 sequentially passes through the outer end cover of the main valve rod, the main valve rod copper sleeve 5 and the inner hole of the main valve rod composite bearing and is inserted into the square hole of the hemispherical valve clack 2, and the self-aligning balance surface 12-4 of the main valve rod is contacted with the end surface of the square hole of the hemispherical valve clack 2; in this embodiment, the adjusting member 17 is a socket head cap screw, the adjusting member 17 presses or releases the outer end cap of the main valve stem and fixes the outer end cap in the screw hole of the valve body 1, and when the adjusting member 17 presses the outer end cap of the main valve stem, the pressing force is transmitted to the hemispherical valve flap 2 through the main valve stem copper sleeve and the self-aligning balance surface 12-4 on the main valve stem, so as to reach the horizontal center position of the adjusting hemispherical valve flap 2, thereby achieving the purpose of adjustment. In the embodiment, the locking piece 18 is a locking set screw, and after the adjustment is completed, the locking set screw is locked, so that the adjustment significance lies in eliminating position errors and assembly errors among parts in the machining process, and the movement precision and the product performance of the eccentric half ball valve are improved. The inner end cover of the main valve rod is pressed on the hemispherical valve clack 2 and is fixed on the main valve rod by a hexagon bolt.
The auxiliary valve rod composite bearing is arranged in a valve clack hole of the hemispherical valve clack 2, the auxiliary valve rod penetrates through an auxiliary valve rod assembly installation cavity of the valve body 1 and is inserted into the hole of the auxiliary valve rod composite bearing, and the aligning end face 22-1 on the auxiliary valve rod is contacted with the end face of the valve clack hole. The inner end cover of the auxiliary valve rod is pressed on the hemispherical valve clack 2 and is fixed on the auxiliary valve rod by a hexagon bolt. And the outer end cover of the auxiliary valve rod is arranged on the outer end face of the mounting cavity of the auxiliary valve rod component and is fixed on the valve body 1 by using an inner hexagon screw. In this embodiment, the axial aligning preload member 26 is a set screw, the end face of the auxiliary valve rod can be pressed or loosened by rotating the axial aligning preload member 26, and the jacking force of the axial aligning preload member 26 is transmitted to the end face of the hemispherical valve clack 2 through the aligning end face 22-1 of the auxiliary valve rod during pressing, so that the horizontal center position of the hemispherical valve clack 2 is moved and adjusted.
This eccentric half ball valve through set up aligning structure respectively on main valve stem subassembly and vice valve stem subassembly for the hemisphere valve clack can carry out the regulation of horizontal central point through two directions and put, can effectively eliminate position error and assembly error between each spare part in the course of working, realizes the accurate regulation of half ball valve horizontal central point position, thereby improves the motion accuracy and the product property ability of eccentric half ball valve. And utilize the structure of valve rod subassembly self to set up multiple sealing respectively on main valve rod subassembly and vice valve rod subassembly, realized seal structure simplification, the purpose of the sealed effect quality has effectively promoted eccentric hemisphere valve's sealing performance and life.
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, includes valve body (1) and rotates through valve rod assembly and install hemisphere valve clack (2) inside the valve body, its characterized in that: the bidirectional aligning structure is arranged on the valve rod assembly, the valve rod assembly comprises a main valve rod assembly (4) and an auxiliary valve rod assembly (5), and the bidirectional aligning structure comprises a main valve rod assembly aligning structure and an auxiliary valve rod assembly aligning structure; the main valve rod component is provided with a main valve rod multiple sealing structure, and the auxiliary valve rod component is provided with an auxiliary valve rod multiple sealing structure.
2. An eccentric hemispherical valve as in claim 1, wherein: a main valve rod component mounting cavity (10) and an auxiliary valve rod component mounting cavity (11) are coaxially arranged on the valve body (1); the main valve rod component mounting cavity (10) is a four-stage ladder mounting cavity; the auxiliary valve rod assembly mounting cavity (11) is a mounting through hole.
3. An eccentric hemispherical valve as in claim 1, wherein: the main valve rod assembly comprises a main valve rod (12), a main valve rod composite bearing (13), a main valve rod copper sleeve (14), a main valve rod inner end cover (15) and a main valve rod outer end cover (16).
4. An eccentric hemispherical valve as in claim 3 wherein: the main valve rod assembly aligning structure comprises an aligning balance surface (12-4) arranged on a main valve rod (12), an adjusting part (17) arranged on an outer end cover (16) of the main valve rod and a locking part (18).
5. An eccentric hemispherical valve as in claim 3 wherein: the main valve stem multiple sealing structure comprises a first seal (19) arranged between a main valve stem (12) and a valve body (1), a second double seal (20) arranged between a main valve stem copper sleeve (14) and the valve body (1), and a triple dynamic seal (21) arranged between the main valve stem (12) and the main valve stem copper sleeve (14).
6. An eccentric hemispherical valve as claimed in claim 3 or 4 or 5 wherein: the main valve rod (12) comprises a connecting part (12-1), a transmission part (12-2) and a fixing part (12-3) which are arranged in a stepped mode, the shaft diameter of the connecting part (12-1) is smaller than that of the transmission part (12-2), and the shaft diameter of the fixing part (12-3) is smaller than that of the transmission part (12-2) and smaller than that of the connecting part (12-1).
7. An eccentric hemispherical valve as in claim 6 wherein: a fixing part (12-3) on the main valve rod (12) penetrates through the valve body (1) to be connected with the hemispherical valve clack (2) and is fixed through an inner end cover (15) of the main valve rod; the end part of the transmission part (12-2) extends into the valve body (1) and is abutted with the hemispherical valve clack (2); the transmission part (12-2) is rotatably connected with the valve body (1) through a main valve rod composite bearing (13), the main valve rod copper sleeve (14) is sleeved on the connecting part (12-1), and the outer diameter of the main valve rod copper sleeve is equal to that of the main valve rod composite bearing (13); the outer end cover (16) of the main valve rod is sleeved on the connecting part (12-1) outside the main valve rod copper sleeve (14) and is fixedly connected with the valve body (1).
8. An eccentric hemispherical valve as in claim 1, wherein: the auxiliary valve rod assembly comprises an auxiliary valve rod (22), an auxiliary valve rod composite bearing (23), an inner end cover (24) of the auxiliary valve rod and an outer end cover (25) of the auxiliary valve rod; the auxiliary valve rod assembly aligning structure comprises an aligning end face (22-1) arranged on the auxiliary valve rod (22) and matched with the hemispherical valve clack, and an axial aligning preload piece (26) arranged on an outer end cover (25) of the auxiliary valve rod.
9. An eccentric hemispherical valve as in claim 8, wherein: the multiple sealing structure of the auxiliary valve rod comprises multiple static seals (8) arranged between the auxiliary valve rod (22) and the valve body (1) and double dynamic seals (9) arranged between the auxiliary valve rod (22) and the hemispherical valve clack (2).
10. An eccentric hemispherical valve as claimed in claim 8 or 9, wherein: the auxiliary valve rod (22) comprises a valve body connecting part (22-2) and a valve clack connecting part (22-3) which are arranged in a stepped structure, the shaft diameter of the valve body connecting part (22-2) is larger than that of the valve clack connecting part (22-3), and the aligning end face (22-1) is arranged at the connecting part of the valve body connecting part (22-2) and the valve clack connecting part (22-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121900815.7U CN215720961U (en) | 2021-08-13 | 2021-08-13 | Eccentric half ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121900815.7U CN215720961U (en) | 2021-08-13 | 2021-08-13 | Eccentric half ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215720961U true CN215720961U (en) | 2022-02-01 |
Family
ID=79996066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121900815.7U Active CN215720961U (en) | 2021-08-13 | 2021-08-13 | Eccentric half ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215720961U (en) |
-
2021
- 2021-08-13 CN CN202121900815.7U patent/CN215720961U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201693392U (en) | Cylindrical cam indexer | |
| CN102059676A (en) | Device and method for mounting water pipe connector on shell of thermostat | |
| CN203363251U (en) | Fixed ball valve installed on double balls | |
| CN215720961U (en) | Eccentric half ball valve | |
| CN203022654U (en) | Sealing type universal shaft for screw drilling tool | |
| CN202302085U (en) | Flaring-type high-pressure shuttle valve | |
| CN204153163U (en) | A kind of valve rod is without the straight stroke electric modulating valve moved axially | |
| CN108561360A (en) | A kind of overflow valve | |
| CN106015625B (en) | Oil drilling two way seal multipurpose plug valve | |
| WO2021077584A1 (en) | All-metal downhole motor based on multi-stage double plunger-eccentric gear mechanism | |
| CN215445140U (en) | Upper-mounted eccentric half-ball valve with regulating press ring on valve seat | |
| CN111412288B (en) | Integrated multi-shaft magnetic fluid sealing device | |
| CN211649126U (en) | Welding ball valve that floats | |
| WO2021114900A1 (en) | Vector sealing valve | |
| CN210424085U (en) | Pipeline connecting assembly and angle valve | |
| CN107289153A (en) | A kind of T-shaped tee ball valve of high pressure | |
| CN213776437U (en) | Ball valve with high structure precision and good sealing performance | |
| CN204900891U (en) | Gear drive zero leakage plate valve | |
| CN219954417U (en) | Valve core of water tap | |
| CN216951855U (en) | Pressure reducing valve with two-stage pressure reducing structure | |
| CN109737137A (en) | A kind of biserial roller angular contact bearing | |
| CN220668165U (en) | Tower foundation bearing | |
| CN221034003U (en) | High-sealing triple offset butterfly valve | |
| CN220870162U (en) | Vacuum safety valve for aircraft sewage vehicle | |
| CN219472822U (en) | Lifting check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |