CN210372216U - Die forging all-welded valve body ball valve - Google Patents
Die forging all-welded valve body ball valve Download PDFInfo
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- CN210372216U CN210372216U CN201921166232.9U CN201921166232U CN210372216U CN 210372216 U CN210372216 U CN 210372216U CN 201921166232 U CN201921166232 U CN 201921166232U CN 210372216 U CN210372216 U CN 210372216U
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Abstract
The utility model discloses a die forging all-welded valve body ball valve, which comprises a valve body, spheroid and valve rod, spheroid left end cover is equipped with first disk seat, spheroid right-hand member cover is equipped with the second valve seat, the welding of valve body left end has the left end cover, the welding of valve body right-hand member has the right-hand member cover, the cover is equipped with the bottom suspension fagging on the spheroid lower location boss, the cover is equipped with the backup pad on the boss of location on the spheroid, supreme first valve rod section and the second valve rod section of having set gradually are down followed to the valve rod, the diameter of first valve rod section is greater than the diameter of second valve rod section, the cover is equipped with the thrust packing pad on the valve rod, screw gland and last valve gap, go up valve gap and valve body welded fastening, go up the vertical screw hole that is provided with in valve gap middle part, screw. Above-mentioned technical scheme, structural design is reasonable, compact structure, assembly efficiency is convenient, low in manufacturing cost, valve seat sealing performance are good, the valve rod location is reliable and long service life.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to die forging all-welded valve body ball valve.
Background
The petroleum and natural gas industry, the gas industry and the heat supply pipeline need to apply a large number of all-welded ball valves, but the existing all-welded ball valves are large in size and very heavy, are positioned by only adopting a fixed pin, are high in processing difficulty and long in production period, so that the manufacturing cost is high, and the assembly time is long, so that the production efficiency is low; the valve seat structure of the existing all-welded ball valve is unreasonable in design, and the problems that all parts are easy to deform and the contraction of all parts is inconsistent are solved; and the existing all-welded ball valve upper-mounted valve rod is easily blown out by the pressure of an internal medium, so that potential safety hazards exist, and the practicability is poor.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a die forging all-welded valve body ball valve that structural design is reasonable, compact structure, assembly efficiency are convenient, low in manufacturing cost, disk seat sealing performance are good, the valve rod location is reliable and long service life.
In order to achieve the above purpose, the utility model provides a following technical scheme: a die forging all-welded valve body ball valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a ball is arranged in the valve cavity, a valve rod is arranged at the upper end of the ball, a first valve seat is sleeved at the left end of the ball, a second valve seat is sleeved at the right end of the ball, a left end cover is welded at the left end of the valve body, a right end cover is welded at the right end of the valve body, a lower positioning boss is integrally arranged at the lower end of the ball, a lower supporting plate is sleeved on the lower positioning boss, a first fixing pin is arranged between the left end of the lower supporting plate and the inner wall surface of the left end; an upper positioning boss is integrally arranged at the upper end of the ball body, an upper supporting plate is sleeved on the upper positioning boss, a third fixing pin is arranged between the left end of the upper supporting plate and the inner wall surface of the left end cover, and a fourth fixing pin is arranged between the right end of the upper supporting plate and the inner wall surface of the right end cover; the valve rod is the echelonment structure, and supreme first valve stem section and the second valve stem section of having set gradually are followed to the valve rod, the diameter of first valve stem section is greater than the diameter of second valve stem section, the cover is equipped with the sealed pad of thrust, screw gland and last valve gap on the valve rod, go up valve gap and valve body welded fastening, the vertical screw hole that is provided with in upper valve gap middle part, screw gland and screw hole threaded connection, and the sealed pad that just pushes away is located the screw gland below, compress tightly the sealed pad of thrust on the step face between first valve stem section and second valve stem section through screw gland.
The utility model discloses further set up to: a first medium through hole is formed in the left end cover, a first valve seat positioning groove is formed in the position, located at the right port of the first medium through hole, of the left end cover, and the first valve seat is installed in the first valve seat positioning groove; and a second medium through hole is formed in the right end cover, a second valve seat positioning groove is formed in the position, located at the left port of the second medium through hole, of the right end cover, and the second valve seat is installed in the second valve seat positioning groove.
The utility model discloses still further set up to: the first valve seat comprises a first valve seat support ring, a first U-shaped fluoroplastic ring, a first piston sealing ring, a first pre-tightening spring, a first hard alloy sealing ring, a first rubber sealing ring and a first metal retainer ring, and the first valve seat support ring and the inner wall surface of the first valve seat positioning groove form sealing through the first U-shaped fluoroplastic ring and the first piston sealing ring; a first sealing inclined plane is arranged at the right end of the first valve seat supporting ring, and the first hard alloy sealing ring, the first rubber sealing ring and the first metal check ring are fixedly arranged on the first sealing inclined plane; the first pre-tightening spring is positioned between the first valve seat support ring and the inner wall surface of the first valve seat positioning groove, and the first hard alloy sealing ring, the first rubber sealing ring and the outer surface of the ball body form sealing under the elastic force action of the first pre-tightening spring.
The utility model discloses still further set up to: the second valve seat comprises a second valve seat supporting ring, a second U-shaped fluoroplastic ring, a second piston sealing ring, a second pre-tightening spring, a second hard alloy sealing ring, a second rubber sealing ring and a second metal retainer ring, and the second valve seat supporting ring and the inner wall surface of the second valve seat positioning groove form sealing through the second U-shaped fluoroplastic ring and the second piston sealing ring; a second sealing inclined plane is arranged at the left end of the second valve seat supporting ring, and the second hard alloy sealing ring, the second rubber sealing ring and the second metal check ring are fixedly arranged on the second sealing inclined plane; and the second pre-tightening spring is positioned between the second valve seat supporting ring and the inner wall surface of the second valve seat positioning groove, and the second hard alloy sealing ring and the second rubber sealing ring are sealed with the outer surface of the ball body under the elastic force action of the second pre-tightening spring.
The utility model discloses still further set up to: the first rubber sealing ring and the second rubber sealing ring are both triangular sealing rings.
The utility model discloses still further set up to: the improved valve rod packing device is characterized in that a packing groove is formed in the upper end of the threaded gland, packing is arranged in the packing groove, a connecting disc is arranged at the upper end of the packing, the connecting disc is sleeved on the valve rod, a packing pressing block is integrally arranged at the position, aligned with the packing groove, of the bottom surface of the connecting disc, the upper end of the threaded gland and the outer surface of the valve rod are sealed through the packing, a four-open ring is arranged between the connecting disc and the threaded gland, and the connecting disc and the.
The utility model discloses still further set up to: a plurality of first positioning pins are arranged between the valve body and the left end cover, and a plurality of second positioning pins are arranged between the valve body and the right end cover.
The utility model discloses still further set up to: a third medium through hole is formed in the ball body, and the lower end of the valve rod is fixedly welded with the upper end of the ball body or fixedly connected with the upper end of the ball body through a bolt.
The utility model has the advantages that: compared with the prior art, the utility model has more reasonable structure, the supporting plates are arranged at the upper end and the lower end of the ball body, the supporting plates are combined with the fixed pins for positioning, the positioning of the ball body is reliable, the precision is high, the structure is compact, the defects of large processing difficulty and long production period of the existing all-welded ball valve due to the adoption of a single fixed pin are eliminated, the production period is effectively shortened, and the manufacturing cost is reduced; the screw gland, the four-open ring and the stepped valve rod are structurally designed, so that the safety is good, and the valve rod is prevented from blowing out; the valve seat adopts the design of hard alloy sealing ring and triangular rubber ring sealing, meets the requirements of various harsh working conditions, and has excellent application performance especially under the working condition that gas contains tiny particles. The whole die forging all-welded valve body ball valve is reasonable in structural design, compact in structure, convenient to assemble, low in manufacturing cost, good in valve seat sealing performance, reliable in valve rod positioning, long in service life and good in practicability.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is an enlarged view of section II of FIG. 1;
FIG. 4 is an enlarged view of section III of FIG. 1;
fig. 5 is a schematic structural diagram of a four-open loop according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a lower supporting plate according to an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 6, the utility model discloses a die forging all-welded valve body ball valve, including valve body 1, be provided with valve cavity 11 in the valve body 1, set up spheroid 2 in the valve cavity 11, be provided with valve rod 3 on the spheroid 2, the left end cover of spheroid 2 is equipped with first valve seat 4, and the right end cover of spheroid 2 is equipped with second valve seat 5, the left end welding of valve body 1 has left end cover 6, and the right end welding of valve body 1 has right end cover 7, the spheroid 2 lower extreme is provided with lower location boss 21 integratively, and the cover is equipped with lower support plate 8 on the lower location boss 21, be provided with first fixed pin 9 between the inner wall of left end cover 6 and the left end of lower support plate 8 left end, be provided with second fixed pin 10 between the inner wall of right; an upper positioning boss 22 is integrally arranged at the upper end of the sphere 2, an upper supporting plate 12 is sleeved on the upper positioning boss 22, a third fixing pin 13 is arranged between the left end of the upper supporting plate 12 and the inner wall surface of the left end cover 6, and a fourth fixing pin 14 is arranged between the right end of the upper supporting plate 12 and the inner wall surface of the right end cover 7; valve rod 3 is the echelonment structure, and supreme first valve rod section 31 and the second valve rod section 32 of having set gradually are followed to valve rod 3, the diameter of first valve rod section 31 is greater than the diameter of second valve rod section 32, the cover is equipped with thrust seal pad 15, screw gland 16 and last valve cap 17 on the valve rod 3, go up valve cap 17 and 1 welded fastening of valve body, go up the vertical screw hole 171 that is provided with in valve cap 17 middle part, screw gland 16 and screw hole 171 threaded connection, and thrust seal pad 15 is located screw gland 16 below, compresses tightly thrust seal pad 15 on the step face between first valve rod section 31 and second valve rod section 32 through screw gland 16.
Preferably, a first medium through hole 61 is formed in the left end cover 6, a first valve seat positioning groove 62 is formed in the right port of the left end cover 6, which is located at the first medium through hole 61, and the first valve seat 4 is installed in the first valve seat positioning groove 62; a second medium through hole 71 is formed in the right end cover 7, a second valve seat positioning groove 72 is formed in the position, located at the left port of the second medium through hole 71, of the right end cover 7, and the second valve seat 5 is installed in the second valve seat positioning groove 72. The lower supporting plate 8 and the upper supporting plate 12 are provided with inner and outer double-arc surfaces, the inner and outer double-arc surface supporting plates are positioned by combining a single fixing pin, and the ball body is reliably positioned, high in precision and compact in structure. The defects of large processing difficulty and long production period of two fixing pins of the traditional all-welded ball valve are overcome. "
In order to make the structure of the present invention more reasonable, as preferred, in this embodiment, the first valve seat 4 includes a first valve seat support ring 41, a first U-shaped fluoroplastic ring 42, a first piston seal ring 43, a first pre-tightening spring 44, a first hard alloy seal ring 45, a first rubber seal ring 46 and a first metal retainer ring 47, and the first valve seat support ring 41 forms a seal with the inner wall surface of the first valve seat positioning groove 62 through the first U-shaped fluoroplastic ring 42 and the first piston seal ring 43; a first sealing inclined surface 411 is arranged at the right end of the first valve seat supporting ring 41, and the first hard alloy sealing ring 45, the first rubber sealing ring 46 and the first metal retainer ring 47 are fixedly arranged on the first sealing inclined surface 411; the first pre-tightening spring 44 is located between the first valve seat support ring 41 and the inner wall surface of the first valve seat positioning groove 62, and the first hard alloy seal ring 45 and the first rubber seal ring 46 form a seal with the outer surface of the ball 2 under the elastic force action of the first pre-tightening spring 44. The first metal retainer ring 47 is tightly attached to the first rubber seal ring 46, and the first metal retainer ring 47 plays a limiting role in limiting the first rubber seal ring 46.
The second valve seat 5 comprises a second valve seat supporting ring 51, a second U-shaped fluoroplastic ring 52, a second piston sealing ring 53, a second pre-tightening spring 54, a second hard alloy sealing ring 55, a second rubber sealing ring 56 and a second metal retainer ring 57, and the second valve seat supporting ring 51 and the inner wall surface of the second valve seat positioning groove 72 form sealing through the second U-shaped fluoroplastic ring 52 and the second piston sealing ring 53; a second sealing inclined plane 511 is arranged at the left end of the second valve seat supporting ring 51, and the second hard alloy sealing ring 55, the second rubber sealing ring 56 and the second metal retainer ring 57 are fixedly arranged on the second sealing inclined plane 511; the second pre-tightening spring 54 is positioned between the second valve seat supporting ring 51 and the inner wall surface of the second valve seat positioning groove 72, and the second hard alloy sealing ring 55 and the second rubber sealing ring 56 form sealing with the outer surface of the ball 2 under the elastic force action of the second pre-tightening spring 54. The second metal retainer ring 57 is arranged to be closely attached to the second rubber seal ring 56, and the second metal retainer ring 57 plays a limiting role in limiting the second rubber seal ring 56.
Preferably, the first rubber seal 46 and the second rubber seal 56 are both triangular seals.
The upper end of the screw gland 16 is provided with a packing groove 161, the packing groove 161 is internally provided with packing 18, the upper end of the packing 18 is provided with a connecting disc 19, the connecting disc 19 is sleeved on the valve rod 3, the bottom surface of the connecting disc 19 is aligned with the packing groove, the packing pressing block 191 is integrally arranged, the upper end of the screw gland 16 and the outer surface of the valve rod 3 form sealing through the packing 18, a four-open ring 20 is arranged between the connecting disc 19 and the screw gland 16, and the connecting disc 19 and the upper valve cover 17 are locked and fixed through bolts.
A plurality of first positioning pins 23 are arranged between the valve body 1 and the left end cover 6, and a plurality of second positioning pins 24 are arranged between the valve body 1 and the right end cover 7.
A third medium through hole 25 is formed in the ball body 2, and the lower end of the valve rod 3 is fixedly welded or fixedly connected with the upper end of the ball body 2 through a bolt.
In practical application, the supporting plates are arranged at the upper end and the lower end of the ball body, the supporting plates are combined with the fixing pins for positioning, the positioning of the ball body is reliable, the precision is high, the structure is compact, the defects that the processing difficulty is high and the production period is long when a single fixing pin is adopted in the existing all-welded ball valve are overcome, the production period is effectively shortened, and the manufacturing cost is reduced; the screw gland, the four-open ring and the stepped valve rod are structurally designed, so that the safety is good, and the valve rod is prevented from blowing out; the valve seat adopts the design of hard alloy sealing ring and triangular rubber ring sealing, meets the requirements of various harsh working conditions, and has excellent application performance especially under the working condition that gas contains tiny particles. The whole die forging all-welded valve body ball valve is reasonable in structural design, compact in structure, convenient to assemble, low in manufacturing cost, good in valve seat sealing performance, reliable in valve rod positioning, long in service life and good in practicability.
The above embodiments are only used for further explanation of the present invention, and it is not understood that the present invention is limited by the protection scope of the present invention, and the technical engineers in the field are right according to the above contents of the present invention.
Claims (8)
1. The utility model provides a die forging all-welded valve body ball valve, includes valve body (1) be provided with valve pocket (11) in valve body (1), set up spheroid (2) in valve pocket (11), spheroid (2) upper end is provided with valve rod (3), spheroid (2) left end cover is equipped with first disk seat (4), and spheroid (2) right-hand member cover is equipped with second disk seat (5), its characterized in that: a left end cover (6) is welded at the left end of the valve body (1), a right end cover (7) is welded at the right end of the valve body (1), a lower positioning boss (21) is integrally arranged at the lower end of the ball body (2), a lower supporting plate (8) is sleeved on the lower positioning boss (21), a first fixing pin (9) is arranged between the left end of the lower supporting plate (8) and the inner wall surface of the left end cover (6), and a second fixing pin (10) is arranged between the right end of the lower supporting plate (8) and the inner wall surface of the right end cover (7); an upper positioning boss (22) is integrally arranged at the upper end of the sphere (2), an upper supporting plate (12) is sleeved on the upper positioning boss (22), a third fixing pin (13) is arranged between the left end of the upper supporting plate (12) and the inner wall surface of the left end cover (6), and a fourth fixing pin (14) is arranged between the right end of the upper supporting plate (12) and the inner wall surface of the right end cover (7); valve rod (3) are the echelonment structure, and supreme first valve rod section (31) and the second valve rod section (32) of having set gradually are followed in valve rod (3), the diameter of first valve rod section (31) is greater than the diameter of second valve rod section (32), the cover is equipped with thrust sealing pad (15), screw gland (16) and last valve cap (17) on valve rod (3), go up valve cap (17) and valve body (1) welded fastening, the vertical screw hole (171) that is provided with in last valve cap (17) middle part, screw gland (16) and screw hole (171) threaded connection, and thrust sealing pad (15) are located screw gland (16) below, compress tightly thrust sealing pad (15) on the step face between first valve rod section (31) and second valve rod section (32) through screw gland (16).
2. The swaged all-welded valve body ball valve of claim 1, wherein: a first medium through hole (61) is formed in the left end cover (6), a first valve seat positioning groove (62) is formed in the position, located at the right end opening of the first medium through hole (61), of the left end cover (6), and the first valve seat (4) is installed in the first valve seat positioning groove (62); and a second medium through hole (71) is formed in the right end cover (7), a second valve seat positioning groove (72) is formed in the position, located at the left port of the second medium through hole (71), of the right end cover, and the second valve seat (5) is installed in the second valve seat positioning groove (72).
3. The swaged all-welded valve body ball valve of claim 2, wherein: the first valve seat (4) comprises a first valve seat support ring (41), a first U-shaped fluoroplastic ring (42), a first piston sealing ring (43), a first pre-tightening spring (44), a first hard alloy sealing ring (45), a first rubber sealing ring (46) and a first metal retainer ring (47), and the first valve seat support ring (41) is sealed with the inner wall surface of the first valve seat positioning groove (62) through the first U-shaped fluoroplastic ring (42) and the first piston sealing ring (43); a first sealing inclined plane (411) is arranged at the right end of the first valve seat support ring (41), and the first hard alloy sealing ring (45), the first rubber sealing ring (46) and the first metal retainer ring (47) are fixedly arranged on the first sealing inclined plane (411); the first pre-tightening spring (44) is positioned between the first valve seat support ring (41) and the inner wall surface of the first valve seat positioning groove (62), and the first hard alloy sealing ring (45) and the first rubber sealing ring (46) are sealed with the outer surface of the ball body (2) under the elastic force action of the first pre-tightening spring (44).
4. The swaged all-welded valve body ball valve of claim 3, wherein: the second valve seat (5) comprises a second valve seat supporting ring (51), a second U-shaped fluoroplastic ring (52), a second piston sealing ring (53), a second pre-tightening spring (54), a second hard alloy sealing ring (55), a second rubber sealing ring (56) and a second metal retainer ring (57), and the second valve seat supporting ring (51) and the inner wall surface of the second valve seat positioning groove (72) form sealing through the second U-shaped fluoroplastic ring (52) and the second piston sealing ring (53); a second sealing inclined plane (511) is arranged at the left end of the second valve seat supporting ring (51), and the second hard alloy sealing ring (55), the second rubber sealing ring (56) and the second metal retainer ring (57) are fixedly arranged on the second sealing inclined plane (511); the second pre-tightening spring (54) is positioned between the second valve seat supporting ring (51) and the inner wall surface of the second valve seat positioning groove (72), and the second hard alloy sealing ring (55) and the second rubber sealing ring (56) are sealed with the outer surface of the ball body (2) under the action of the elastic force of the second pre-tightening spring (54).
5. The swaged all-welded valve body ball valve of claim 4, wherein: the first rubber sealing ring (46) and the second rubber sealing ring (56) are both triangular sealing rings.
6. The swaged all-welded valve body ball valve of claim 1, wherein: screw gland (16) upper end is provided with packing groove (161), be provided with filler (18) in packing groove (161), filler (18) upper end is provided with connection pad (19), connection pad (19) cover is established on valve rod (3), and connection pad (19) bottom surface is aimed at packing groove position an organic whole and is set up packing briquetting (191), constitute through filler (18) between the surface of screw gland (16) upper end and valve rod (3) and seal, and be provided with between connection pad (19) and screw gland (16) four ring opening (20), fix through bolt locking between connection pad (19) and last valve cap (17).
7. The swaged all-welded valve body ball valve of claim 1, wherein: a plurality of first positioning pins (23) are arranged between the valve body (1) and the left end cover (6), and a plurality of second positioning pins (24) are arranged between the valve body (1) and the right end cover (7).
8. The swaged all-welded valve body ball valve of claim 1, wherein: a third medium through hole (25) is formed in the ball body (2), and the lower end of the valve rod (3) is fixedly welded or fixedly connected with the upper end of the ball body (2) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921166232.9U CN210372216U (en) | 2019-07-23 | 2019-07-23 | Die forging all-welded valve body ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921166232.9U CN210372216U (en) | 2019-07-23 | 2019-07-23 | Die forging all-welded valve body ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210372216U true CN210372216U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921166232.9U Active CN210372216U (en) | 2019-07-23 | 2019-07-23 | Die forging all-welded valve body ball valve |
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| CN (1) | CN210372216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669477A (en) * | 2021-08-27 | 2021-11-19 | 希佛隆阀门集团有限公司 | All-welded ball valve |
| CN114688290A (en) * | 2020-12-28 | 2022-07-01 | 纳福希（上海）阀门科技有限公司 | Corrugated pipe ball valve |
-
2019
- 2019-07-23 CN CN201921166232.9U patent/CN210372216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688290A (en) * | 2020-12-28 | 2022-07-01 | 纳福希（上海）阀门科技有限公司 | Corrugated pipe ball valve |
| CN113669477A (en) * | 2021-08-27 | 2021-11-19 | 希佛隆阀门集团有限公司 | All-welded ball valve |
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