CN216430548U - Ball valve spheroid scraper structure and all-welded ball valve - Google Patents
Ball valve spheroid scraper structure and all-welded ball valve Download PDFInfo
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- CN216430548U CN216430548U CN202121520197.3U CN202121520197U CN216430548U CN 216430548 U CN216430548 U CN 216430548U CN 202121520197 U CN202121520197 U CN 202121520197U CN 216430548 U CN216430548 U CN 216430548U
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Abstract
The utility model relates to a ball scraper structure of a ball valve and a full-welded ball valve, in particular to a large-diameter ball valve. The axial inner end of the valve seat support ring is provided with an annular flange extending inwards in the radial direction, and the inner end surface of the annular flange is in an annular conical surface shape or an annular spherical surface shape similar to the corresponding spherical surface, so that a scraper capable of scraping scale on the spherical surface is formed. The all-welded ball valve adopts a valve seat support ring provided with a scraper, and adopts three opening rings and other matched components to realize the installation and fixation of the valve seat in the valve body. The ball valve can automatically scrape impurities adhered to the spherical surface in the use process of the ball valve, and the valve seat sealing ring can be detached from the valve body under the condition of not cutting the valve body, so that the leakage fault of the valve is greatly reduced, and the maintenance cost of the valve seat sealing ring is greatly reduced.
Description
Technical Field
The utility model relates to a ball scraper structure of a ball valve and a full-welded ball valve, in particular to a large-diameter ball valve, and belongs to the technical field of valves.
Background
The existing large-caliber all-welded ball valve mainly comprises a valve body, a ball body and valve seats, wherein the ball body used as an opening and closing element is arranged in a valve cavity of the valve body, the top of the ball body is connected with a valve rod, the two valve seats are respectively positioned on two sides of the ball body, the valve and the ball body form a valve sealing pair, when a ball opening of the ball body is opposite to the valve seats, a through hole of the ball body is communicated with an inlet and an outlet of the valve body to form a medium channel, the valve is opened, and when the ball surface is opposite to the valve seats, the medium channel between the inlet and the outlet of the valve is separated by the ball body, and the valve is closed. The valve body is mainly formed by welding a main valve body and two accessories, valve seats mainly formed by valve seat sealing rings and valve seat supporting rings are respectively installed at the inner port positions of the corresponding accessories, the sealing rings are arranged in the valve seats, the sealing surfaces at the inner sides of the sealing rings can be contacted with the spherical surface of a sphere to form sealing, and through holes of the accessories respectively form inlet and outlet channels at the corresponding sides.
One drawback of the prior art is that: after a period of time of use, especially under being used for the condition of relatively poor quality of water, can the adhesion more impurity on the spheroid sphere, after these impurity reach certain thickness, can make the valve turn heavy when carrying out valve switch action and open or close very difficultly, serious impurity enters into the inside and strains whole sealing surface penetrability to cause the valve to reveal.
Another drawback of the prior art is that: the valve body is of an all-welded structure and can not be disassembled, the valve seat sealing ring and other parts in the valve body can not be disassembled under the condition of not damaging the valve body, when the sealing ring has problems, the on-site maintenance can not be generally carried out, only the ball valve can be cut off from a pipeline and returned to a factory for maintenance, and for the large-caliber industrial ball valve, even if the large-caliber industrial ball valve is returned to the factory for maintenance, the replacement of the valve seat sealing ring in the main valve body is labor-consuming and highly dangerous work, mainly because the large-caliber all-welded ball valve adopts the all-welded structure, the valve can be opened only by turning off two middle welding lines on the valve body, and because the total weight of the large-caliber welded ball valve is generally more than 20 tons, the total height is about 2.5 meters, the maximum outer diameter can reach 2.3 meters, when the welding line is turned, a large-sized vertical lathe is required, when the welding line at one end of the lathe is turned, the turned part which is probably thrown away is finally taken out of the vertical lathe, injury to equipment or personnel. After the parts of the valve are replaced, the valve needs to be welded again, so that the maintenance of a large-caliber all-welded ball valve easily takes more than ten days.
SUMMERY OF THE UTILITY MODEL
The first purpose of the utility model is to enable the ball valve to automatically scrape impurities adhered to the spherical surface during the use process so as to greatly reduce or eliminate the harm caused by the scaling of the spherical surface.
The second purpose of the utility model is to remove the valve seat sealing ring from the valve body without cutting the valve body, so as to greatly reduce the maintenance cost of the valve seat sealing ring.
The technical scheme of the utility model is as follows: ball valve spheroid scraper structure, including the disk seat lock ring, its characterized in that be equipped with the scraper towards spheroid direction on the disk seat lock ring.
Preferably, an annular flange extending radially inward is provided at an axially inner end (toward the ball end) of the valve seat support ring, an inner end surface (radially inner end surface) of the annular flange is in an annular conical surface shape (frustum side surface shape) or an annular spherical surface shape (spherical strip shape) similar to a corresponding spherical surface (surface of the ball), and the annular flange constitutes the scraper, so that when impurities adhered to the spherical surface abut against an edge portion of the inner end surface of the annular flange or a protruding portion on the inner end surface, the impurities are scraped from the spherical surface.
Preferably, the inner end surface of the annular flange is provided with a hard surface layer. For example, the inner end surface is coated with a Ni60 layer constituting the hard surface by spraying, whereby the surface hardness can be HRC60 to 62.
The fully welded ball valve, in particular to a large-caliber fully welded ball valve, comprises a valve body, wherein the valve body is formed by connecting (for example, welding or integrally molding) a main valve body and a left auxiliary body and a right auxiliary body (or called side pipes or connecting pipes), a ball body and a left valve seat and a right valve seat which respectively form a valve sealing pair with the ball body are arranged in a valve cavity of the valve body, the valve seats are arranged at axial inner end ports (inner ports of axial through holes of the auxiliary bodies) of the auxiliary bodies on corresponding sides, and each valve seat comprises a valve seat sealing ring and a valve seat supporting ring for supporting the valve seat sealing ring, the valve seat sealing ring is positioned on the axial inner side of the corresponding valve seat supporting ring, and the valve seat supporting ring adopts any one ball scraper structure of the utility model or any one valve seat supporting ring of the ball scraper structures of the utility model.
Preferably, the valve seat further comprises an annular spring seat, a spring, three open rings and an annular pressing plate, wherein the annular spring seat, the three open rings and the annular pressing plate are coaxially assembled in the corresponding appendage and are sequentially and tightly attached to the appendage from inside to outside along the axial direction of the appendage, the annular spring seat is positioned on the axial outer side of the valve seat supporting ring, the outer diameter of the three open rings is larger than the inner diameter of the appendage, the inner diameter of the appendage is smaller than the inner diameter of the appendage, annular three-opening ring mounting grooves are formed in the inner wall of the appendage along the radial direction, the three open rings are embedded in the three open ring mounting grooves, the annular spring seat, the three open rings and the annular pressing plate are fixedly connected through screws, the valve seat supporting ring is positioned on the axial inner side of the annular spring seat, the spring is positioned between the valve seat supporting ring and the annular spring seat, and the two ends of the spring seat supporting ring and the annular spring seat supporting ring are respectively abutted to the annular spring seat supporting ring, the radial outer side of the axial inner end face of the valve seat support ring is provided with an annular notch, the valve seat seal ring is assembled on the annular notch, and the axial inner end of the valve seat seal ring extends inwards from the axial inner end of the valve seat support ring and is used for being in contact (matched) with the spherical surface of the ball body.
Preferably, the inner wall of the annular spring seat is provided with an annular clamping groove along the radial direction.
Preferably, a spring mounting groove is formed in the end face of the axial inner side of the annular spring seat, the spring is mounted in the spring mounting groove, and two ends of the spring respectively abut against the end face of the axial outer side of the valve seat support ring and the groove bottom of the spring mounting groove.
Preferably, the inner diameters of the valve seat support ring, the annular spring seat, the three open rings and the annular pressure plate are the same.
Preferably, the outer diameters of the valve seat support ring, the annular spring seat and the annular pressure plate are matched with the inner diameter of the accessory.
Preferably, a sliding fit clearance is reserved between the radial outer wall of the valve seat support ring and the inner wall of the accessory body.
The number of the springs is preferably a plurality of springs, and the springs are uniformly distributed along the same circumference.
The number of the screws is preferably a plurality of screws, and the plurality of screws are uniformly distributed along the same circumference.
Preferably, the number of the screws is the same as that of the springs, and the screws correspond to the radial positions of the springs in the circumferential direction one by one.
The screw is preferably a socket head cap screw, the head of which is directed axially outwards of the appendage.
The utility model has the beneficial effects that: because the scraper matched with the spherical surface is arranged on the valve seat supporting ring, when the sphere rotates, the scraper can automatically scrape off excessive impurities on the spherical surface, and the scraped impurities can be taken away by water flow, so that the damage to a valve, particularly a valve seat sealing ring, caused by excessive thick scale on the spherical surface is effectively reduced or avoided; because the three-opening ring is adopted to realize the fixation and the support of the valve seat supporting ring on the accessory body, the outer diameters of the valve seat supporting ring, the valve seat sealing ring and the like are smaller than the inner diameter of the through hole of the accessory body, when the valve seat sealing ring needs to be detached, the annular pressure plate, the three-opening ring, the annular spring seat and the valve seat supporting ring are sequentially detached from the accessory body without cutting the valve body, the on-site maintenance or the replacement of the valve seat sealing ring can be realized, and the maintenance work is simple, convenient, rapid and safe, and the maintenance cost is low.
Drawings
FIG. 1 is a schematic view of an all-welded ball valve according to the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
fig. 3 is a schematic diagram of the spherical surface self-cleaning (automatic scraping of spherical surface adhering impurities) process of the present invention.
Detailed Description
Referring to fig. 1 to 3, the present invention is provided with a scraper for scraping off impurities 58 (shown in a scraped state in fig. 3) adhered to a spherical surface, or spherical scale, on a valve seat support ring 31.
The scraper is arranged on the valve seat support ring and faces the direction of the sphere 10, the cutting edge of the scraper is in a form suitable for scraping scale on the spherical surface, the distance between the cutting edge and the spherical surface can be controlled to be about 1mm generally according to factors such as actual requirements, machining precision conditions and the like, the inner end (facing the end of the sphere) in the axial direction of the valve seat support ring is provided with an annular flange 50 extending inwards in the radial direction, the inner end surface (the inner end surface in the radial direction) of the annular flange is in an annular conical surface shape (a frustum side surface shape) or an annular spherical surface shape (a spherical strip shape) similar to the corresponding spherical surface (the surface of the sphere), and the annular flange forms the scraper, so that impurities adhered on the spherical surface are scraped from the spherical surface when being abutted against the edge part of the inner end surface of the annular flange or the convex part on the inner end surface.
A hard skin 52 may be provided on the inner end face of the annular flange. For example, the inner end face is sprayed with a Ni60 layer forming the hard surface, so that the surface hardness can reach HRC 60-62, the service life of the scraper is prolonged, and a better scraping effect is obtained.
The angular edge of the inner end surface of the annular flange (for example, the circular edges on both sides of the inner end surface) may be regarded as the blade of the scraper, the angular protrusion may be provided on the inner end surface as the blade, and other suitable forms of "blade" may also be adopted.
The inner end surface of the annular protrusion can be made into a file surface (file surface of a file, particularly a file surface of a light file or a fine file) structure to enhance the removal effect of the spherical scale.
The basic structure of the valve seat support ring can be the same as that of the existing valve seat support ring, the valve seat support ring is used for supporting the valve seat sealing ring 32 and forms a valve seat together with the valve seat sealing ring, and the valve seat can be assembled in the valve body by adopting any appropriate existing technology.
As a preferred embodiment, the valve seat includes not only the valve seat support ring 31 and the valve seat seal ring (or called soft valve seat) 32 supported by the valve seat support ring, but also an annular spring seat 42, a spring 41, three open rings 43 and an annular pressure plate 44, where the annular spring seat, the three open rings and the annular pressure plate are all coaxially located in the appendage 22 of the ball valve, and are sequentially attached from inside to outside along the axial direction of the appendage (one side facing the ball is the inside, and one side facing away from the ball is the outside), and the annular spring seat is located on the axial outside of the valve seat support ring.
The external diameter of three ring-opening is greater than the internal diameter of appendage, the internal diameter of three ring-opening is less than the internal diameter of appendage, radially be equipped with on the inner wall of appendage with the annular three ring-opening mounting groove that three ring-opening matched with, three ring-opening inlays the dress and is in on the three ring-opening mounting groove, realize three ring-opening are in location and fixed in the appendage.
The annular spring seat, the three open rings and the annular pressure plate are fixedly connected through screws 48 to form an integral structure, so that the annular spring seat is fixed in the attached body, and the valve seat support ring and the valve seat sealing ring are positioned. The axis of the screw is preferably parallel to the axis of the appendage, and the head of the screw faces the axial outside of the appendage, so that the screw can be conveniently disassembled and assembled. The spring is preferably a cylindrical spring or a disc spring, is positioned between the valve seat support ring and the annular spring seat, the axis of the spring is parallel to the axis of the auxiliary body, and two ends of the spring respectively abut against the valve seat support ring and the annular spring seat. Under a normal state, the spring is in a compressed state, and because the position of the annular spring seat in the attached body is relatively fixed, the elastic thrust of the spring is utilized to enable the valve seat support ring to drive the valve seat sealing ring to generate a movement trend towards a sphere, so that the valve seat sealing ring is tightly pressed on the sphere, and effective sealing is realized.
The three-open ring is a circular ring formed by sequentially abutting the head and the tail of arc-shaped pieces with the same radian and size, and is convenient to detach from the three-open ring mounting groove. And the three-open ring is disassembled from the three-open ring mounting groove, and the arc-shaped pieces are taken out from the three-open ring mounting groove one by one.
Annular groove 49 is preferably radially equipped with on the inner wall of annular spring seat, is convenient for follow tear out in the ring mounting groove of three divisions during the ring-opening, realize through the frock with annular groove matched with annular spring seat leans on tightly or temporary fixation to the ball valve center, avoids because the elastic thrust of spring makes spring mount seat top pushes away on the axial medial surface of three divisions of rings, makes three divisions of rings bear the thrust card towards the axial outside and can't tear out in the ring mounting groove of three divisions.
The ball valve is characterized in that a spring mounting groove is preferably formed in the end face of the inner side of the axial direction of the annular spring seat, so that the assembly and the position fixation of the spring are facilitated, the spring is mounted in the spring mounting groove, one end of the spring abuts against the end face of the outer side of the axial direction of the valve seat supporting ring, the other end of the spring abuts against the groove bottom of the spring mounting groove, a gap is reserved or not reserved between the valve seat supporting ring and the annular spring seat, and a gap is preferably reserved for the valve seat supporting ring to slightly move in the axial direction in the attached body (due to the relative acting force between the ball body and the valve seat sealing ring and due to the fact that dirt is attached to the ball body, the outer diameter of the ball body is not uniform, and the valve seat supporting ring can often slightly move in the axial direction in the opening and closing process of the ball valve.
The valve seat support ring, the annular spring seat (except for the annular clamping groove), the three open rings and the annular pressing plate have the same inner diameter preferably, so that the assembly is facilitated, and the circulation of fluid is not influenced.
The outer diameters of the valve seat support ring, the annular spring seat and the annular pressure plate are preferably matched with the inner diameter of the auxiliary body (assembly gaps are allowed to be reserved), so that the valve seat support ring, the annular spring seat and the annular pressure plate are convenient to assemble and are in close fit with each other.
The inner end of the accessory body is provided with an annular necking 25 extending inwards, namely an annular flange extending inwards in the radial direction, and the inner diameter of the annular necking is smaller than the outer diameter of the valve seat sealing ring, so that the valve seat sealing ring can be prevented from being separated from the inner end port of the accessory body, and the valve can be conveniently assembled.
The inner side part of the axial outer end face of the annular necking is conical so as to adapt to the shape of a sphere and ensure the matching of the accessory body and the sphere.
Preferably, a sliding fit clearance is reserved between the radial outer wall of the valve seat support ring and the inner wall of the auxiliary body, so that the requirement of fine movement of the valve seat support ring in the axial direction, which often occurs in the opening and closing process of the ball valve, is met.
The number of the springs is preferably a plurality, for example, 3, 4 or 6, the springs are uniformly distributed along the same circumference, the number of the spring mounting grooves on the annular spring seat is the same as that of the springs, the arrangement positions of the spring mounting grooves are in one-to-one correspondence with the distribution positions of the springs, and the springs are respectively mounted in the corresponding spring mounting grooves, so that the uniform stress between the valve seat support ring and the annular spring seat is ensured.
The quantity of screw is preferred a plurality of, for example 3, 4 or 6, a plurality of the screw is along same circumference evenly distributed, guarantees annular spring holder, three open-rings with fastening effect and mutual atress between the annular clamp plate are even, avoid appearing unexpected dislocation. Typically, each arcuate tab of the three open loops is fastened with the screw.
The number of the screws is preferably the same as that of the springs, the screws and the springs are in one-to-one correspondence in the radial positions in the circumferential direction, namely the axes of the corresponding screws and springs and the axes of the auxiliary bodies are in the same plane, so that the axial outward thrust force from one spring and the fastening force from the corresponding screw, which are borne by the spring mounting seat, are on the same section, and the spring mounting seat is guaranteed to be in correspondence in the stress positions on two sides in the axial direction, balanced in stress and not easy to damage.
The screw is preferably a socket head cap screw, so that a corresponding tool can conveniently extend into the accessory body from the outer port end of the accessory body to carry out dismounting operation on the accessory body.
The all-welded ball valve mainly comprises a main valve body 21, an auxiliary body, a ball body and a valve seat, wherein the valve seat adopts the optimized valve seat, the all-welded ball valve not only comprises a valve seat support ring and a valve seat sealing ring (or called soft valve seat) supported by the valve seat support ring, but also comprises an annular spring seat, a spring, three open rings and an annular pressing plate, the radial outer ends of the three open rings are embedded on three open ring mounting grooves on the inner wall of the corresponding auxiliary body, a scraper is arranged on the valve seat support ring, and a valve body of the all-welded ball valve is formed by welding the main valve body and a left floating body and a right floating body. When the valve seat sealing ring needs to be detached from the valve body, screws used for connecting the annular spring seats, the springs, the three open rings and the annular pressing plate are firstly detached, the annular clamping grooves of the two annular spring seats are clamped tightly by the tool matched with the annular clamping grooves and lean against the center of the ball valve, so that the annular spring seats are separated from the three open rings attached to the annular spring seats, then the two three open rings are detached from the three open ring mounting grooves, after the three open rings are detached, the tool matched with the annular clamping grooves is loosened, the spring mounting seats, the springs, the valve seat supporting rings and the valve seat sealing ring on the two sides of the ball valve can be taken out from an accessory body for replacement or maintenance, at the moment, the sealing area on the ball body can be cleaned, and the outer surface of the ball body can restore the smooth finish. When the valve seat is assembled, all parts of the valve seat are sequentially installed in the accessory body from the outer port of the accessory body along the sequence from inside to outside and are fixed, and the annular spring seat, the three open rings and the annular pressure plate are fastened into a whole by using screws. Therefore, the valve seat sealing ring can be detached and installed without cutting the valve body, the operation process is simple, convenient, quick and safe, and the maintenance cost is low.
The distance between the inner end face of the annular flange and the spherical surface of the sphere can be controlled to be 1mm, under the background of the prior art, the clearance can meet requirements of scraping and processing precision on spherical impurities, and the manufacturing cost and the maintenance cost are favorably reduced on the premise that the descaling effect is ensured and the rotation of the sphere is not hindered.
The technical means disclosed by the utility model can be combined arbitrarily to form a plurality of different technical schemes except for special description and the further limitation that one technical means is another technical means.
Claims (16)
1. The ball valve sphere scraper structure comprises a valve seat support ring and is characterized in that a scraper facing the sphere direction is arranged on the valve seat support ring, an annular flange extending radially inwards is arranged at the axial inner end of the valve seat support ring, the inner end of the annular flange is in the shape of an annular conical surface or an annular spherical surface similar to the corresponding spherical surface, and the annular flange forms the scraper.
2. A ball valve sphere scraper structure according to claim 1 wherein the inner end surface of said annular flange is provided with a hard skin.
3. All-welded ball valve, including the valve body, the valve body is formed by the main valve body and two attaches body couplings about with, be equipped with the spheroid in the valve pocket of valve body and respectively with the spheroid constitutes two disk seats about the valve seal is vice, the disk seat is installed at the axial inner end port department of attaching the body of corresponding side, including the valve seat sealing washer with be used for supporting the valve seat supporting ring of valve seat sealing washer, the valve seat sealing washer is located the axial inboard of corresponding valve seat supporting ring, its characterized in that the valve seat supporting ring adopts the valve seat supporting ring of ball valve spheroid scraper structure of any of claims 1-2.
4. The all-welded ball valve according to claim 3, wherein the valve seat further comprises an annular spring seat, a spring, three open rings and an annular pressure plate, the annular spring seat, the three open rings and the annular pressure plate are coaxially assembled in the corresponding attachment and are sequentially and tightly attached to the attachment from inside to outside along the axial direction of the attachment, the annular spring seat is positioned on the axial outside of the valve seat support ring, the outer diameter of the three open rings is larger than the inner diameter of the attachment, the inner diameter of the three open rings is smaller than the inner diameter of the attachment, annular three open ring mounting grooves are radially formed in the inner wall of the attachment, the three open rings are embedded in the three open ring mounting grooves, the annular spring seat, the three open rings and the annular pressure plate are fixedly connected through screws, the valve seat support ring is positioned on the axial inside of the annular spring seat, and the spring is positioned between the valve seat support ring and the annular spring seat, the two ends of the valve seat support ring are respectively abutted against the valve seat support ring and the annular spring seat, an annular notch is formed in the radial outer side of the axial inner end face of the valve seat support ring, the valve seat seal ring is assembled on the annular notch, and the axial inner end of the valve seat seal ring extends inwards from the axial inner end of the valve seat support ring and is used for being in contact with the spherical surface of a sphere.
5. An all-welded ball valve as claimed in claim 4, wherein the annular spring seat has an annular groove radially formed in an inner wall thereof.
6. An all-welded ball valve according to claim 4, wherein a spring mounting groove is formed on an axially inner end surface of the annular spring seat, an axially outer end of the spring is mounted in the spring mounting groove, and both ends of the spring respectively abut against an axially outer end surface of the seat support ring and a groove bottom of the spring mounting groove.
7. An all-welded ball valve according to claim 4, wherein the inner diameters of the seat support ring, the annular spring seat, the three open rings, and the annular pressure plate are the same.
8. An all-welded ball valve according to claim 4, wherein the outer diameters of the seat support ring, the annular spring seat and the annular pressure plate all match the inner diameter of the attachment body.
9. An all-welded ball valve as claimed in claim 4, wherein the number of said springs is several, and several of said springs are uniformly distributed along the same circumference.
10. The heavy-calibre all-welded ball valve, including the valve body, the valve body is formed by the main valve body and two attaches body coupling about with, be equipped with the spheroid in the valve pocket of valve body and respectively with the spheroid constitutes two disk seats about the valve seal is vice, the disk seat is installed at the axial inner end port department of the attached body of corresponding side, including the valve seat sealing washer and be used for supporting the valve seat sealing washer of valve seat sealing washer, the valve seat sealing washer is located the axial inboard of corresponding valve seat sealing washer, its characterized in that the valve seat sealing washer adopts the valve seat sealing washer of ball valve spheroid scraper structure of any of claims 1-2.
11. The large-caliber all-welded ball valve according to claim 10, wherein the valve seat further comprises an annular spring seat, a spring, three open rings and an annular pressure plate, the annular spring seat, the three open rings and the annular pressure plate are coaxially assembled in the corresponding appendage and are sequentially and tightly attached to each other from inside to outside along the axial direction of the appendage, the annular spring seat is located on the axial outside of the valve seat support ring, the outer diameter of the three open rings is larger than the inner diameter of the appendage, the inner diameter of the three open rings is smaller than the inner diameter of the appendage, annular three-open ring mounting grooves are radially arranged on the inner wall of the appendage, the three open rings are embedded in the three open ring mounting grooves, the annular spring seat, the three open rings and the annular pressure plate are fixedly connected through screws, the valve seat support ring is located on the axial inside of the annular spring seat, and the spring is located between the valve seat support ring and the annular spring seat, the two ends of the valve seat support ring are respectively abutted against the valve seat support ring and the annular spring seat, an annular notch is formed in the radial outer side of the axial inner end face of the valve seat support ring, the valve seat seal ring is assembled on the annular notch, and the axial inner end of the valve seat seal ring extends inwards from the axial inner end of the valve seat support ring and is used for being in contact with the spherical surface of a sphere.
12. A large diameter all welded ball valve as claimed in claim 11, wherein the annular spring seat has an annular groove formed on an inner wall thereof in a radial direction.
13. A large-diameter all-welded ball valve according to claim 11, wherein a spring mounting groove is formed on an axial inner end surface of the annular spring seat, an axial outer end of the spring is mounted in the spring mounting groove, and both ends of the spring respectively abut against an axial outer end surface of the seat support ring and a groove bottom of the spring mounting groove.
14. The large-caliber all-welded ball valve according to claim 11, wherein the inner diameters of the seat support ring, the annular spring seat, the three open rings and the annular pressure plate are the same.
15. The large-caliber all-welded ball valve according to claim 11, wherein the outer diameters of the valve seat support ring, the annular spring seat and the annular pressure plate are matched with the inner diameter of the attachment.
16. A large diameter all welded ball valve as claimed in claim 11, wherein said number of springs is several, and said several springs are uniformly distributed along the same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121520197.3U CN216430548U (en) | 2021-07-06 | 2021-07-06 | Ball valve spheroid scraper structure and all-welded ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121520197.3U CN216430548U (en) | 2021-07-06 | 2021-07-06 | Ball valve spheroid scraper structure and all-welded ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216430548U true CN216430548U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121520197.3U Active CN216430548U (en) | 2021-07-06 | 2021-07-06 | Ball valve spheroid scraper structure and all-welded ball valve |
Country Status (1)
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| CN (1) | CN216430548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031034A (en) * | 2022-06-07 | 2022-09-09 | 阿伐流体控制有限公司 | Wear-resisting C type ball valve |
-
2021
- 2021-07-06 CN CN202121520197.3U patent/CN216430548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031034A (en) * | 2022-06-07 | 2022-09-09 | 阿伐流体控制有限公司 | Wear-resisting C type ball valve |
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Address after: No. 2 Yuwei 12th Road, Yufa Town, Daxing District, Beijing 102602 Patentee after: Beijing Beigao Valve Group Co.,Ltd. Address before: 102650 No. 2, Yuwei 12th Road, Yulong Town, Daxing District, Beijing Patentee before: BEIJING BEIGAO VALVE Co.,Ltd. |