CN118009059B - Plastic ball valve for gas pipeline - Google Patents
Plastic ball valve for gas pipeline Download PDFInfo
- Publication number
- CN118009059B CN118009059B CN202410423824.3A CN202410423824A CN118009059B CN 118009059 B CN118009059 B CN 118009059B CN 202410423824 A CN202410423824 A CN 202410423824A CN 118009059 B CN118009059 B CN 118009059B
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- Prior art keywords
- valve
- limiting disc
- ball
- wall
- pipe
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- 239000004033 plastic Substances 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 210000003781 tooth socket Anatomy 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 22
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention belongs to the technical field of valves, and particularly relates to a plastic ball valve for a gas pipeline; comprising the following steps: the device comprises a valve body, an end pipe, a primary sealing assembly, a secondary sealing assembly, a diffusing pipe and a diffusing valve; the first-stage fixing assembly and the second-stage sealing assembly are matched with each other, the first-stage fixing assembly is used for opening and closing the gas flowing in the gas pipeline, when the valve rod is driven by the operation cap to control the ball to rotate clockwise, the ball can be simply controlled to close the inside of the valve body, when the valve rod is driven by the operation cap to control the ball to rotate anticlockwise, the ball is driven by the operation cap to close the inside of the valve body, and meanwhile, the second-stage sealing assembly can be driven to close the orifice of the diffusing pipe, so that the gas is prevented from leaking from the orifice of the diffusing pipe; the two-stage seal is convenient for maintenance personnel to maintain the relief valve or select whether to discharge the gas in the pipeline by controlling the rotation direction of the ball body when maintaining the pipeline.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a plastic ball valve for a gas pipeline.
Background
The plastic ball valve used in the gas pipeline is a valve device capable of controlling medium circulation. The plastic ball valve is generally composed of a ball body, a valve rod, a valve body, a sealing ring and other parts, wherein the ball body is used as a main part for controlling the on-off of a medium, and the opening and the closing of the valve are realized through rotation.
The use of plastic ball valves in gas pipelines has the following advantages: light weight: compared with the metal material, the plastic ball valve is lighter and more convenient to install and maintain; corrosion resistance: the plastic ball valve can be made of a material with strong corrosion resistance, and is suitable for occasions for treating corrosive media; the sealing performance is good: the plastic ball valve has simple structure and good sealing effect, and can effectively prevent medium leakage; the service life is long: the plastic ball valve has longer service life due to good material selection and corrosion resistance.
At present, a plastic ball valve is usually used together with a relief valve, so that after the valve is closed, when a downstream pipeline or equipment is maintained, residual air in the pipeline is exhausted, the safety of maintenance work is ensured, or the plastic ball valve is used for replacing gas in pipeline operation; however, the prior plastic ball valves have some problems in the process of being used together with the relief valve; firstly, when a relief valve connected with a ball valve is in fault and needs to be maintained or replaced, the pipeline cannot be completely sealed and locked through the ball valve, so that part of gas can leak out of a relief pipe, and gas waste is caused; and secondly, when the ball is controlled by the ball valve to close the inside of the pipeline, the gas pressure in the pipeline can be completely propped against the relief valve, and if the relief valve has faults, gas can leak from the relief valve through the relief pipe.
Therefore, in order to improve the reliability of the plastic ball valve and prevent gas leakage in the pipeline and waste of the gas leakage of the pipeline when the fittings are replaced, the invention provides the plastic ball valve for the gas pipeline.
Disclosure of Invention
In view of the above problems, the embodiment of the application provides a plastic ball valve for a fuel gas pipeline, which aims to solve the technical problems. In order to achieve the above object, the embodiment of the present application provides the following technical solutions:
The embodiment of the invention provides a plastic ball valve for a gas pipeline, which comprises the following components: the device comprises a valve body, an end pipe, a primary sealing assembly, a secondary sealing assembly, a diffusing pipe and a diffusing valve; the two ends of the valve body are provided with end pipes, the inside of each end pipe is provided with a secondary sealing assembly, the outer wall of each end pipe is provided with a through hole communicated with the inside of each end pipe, the position of each through hole is connected with a diffusing pipe, the upper end of each diffusing pipe is connected with a diffusing valve, and the valve opening at the upper end of each diffusing valve is provided with a dust cap; the inside of valve body is provided with one-level seal assembly, second grade seal assembly pass through one-level seal assembly and realize the sealing to the through-hole.
The primary sealing assembly comprises a ball body and a valve rod; the ball body is rotatably arranged in the valve body, the valve rod is arranged at the upper end of the valve body in a penetrating way, the lower end of the valve rod is arranged on the outer wall of the upper end of the ball body in a plugging mode, and the lower end of the valve rod is of a pentagonal structure; arc grooves are formed in the outer wall of the sphere in an oblique symmetry mode.
The end pipe is internally provided with a stepped channel, and the secondary sealing assembly comprises a main limiting disc, a sub limiting disc, a propping spring, a wire aligning ring and a limiting piece; the main limiting disc and the sub limiting disc are uniformly provided with air holes along the circumferential direction, the positions of the air holes on the main limiting disc and the sub limiting disc are not corresponding to each other, and the main limiting disc is arranged in a stepped channel on one side of the end pipe, which is close to the sphere, in a sliding fit manner; the sub limiting disc is arranged in the stepped channel at one side of the end pipe far away from the sphere; the sub limiting disc is fixed to the wire ring through the end tube inside, one end face, close to each other, of the main limiting disc and the sub limiting disc is provided with a circular groove, the inside of the two circular grooves is connected with a supporting tight spring together, the main limiting disc on keep away from a end face of the sub limiting disc and be provided with a limiting part.
According to an advantageous embodiment, the primary seal assembly further comprises a valve seat, a support ring, a pressure plate and an O-ring; the upper end face and the lower end face of the ball body are respectively provided with a pressure plate, the inner wall of the pressure plate is provided with a valve seat, the valve seat is attached to the outer wall of the ball body, two supporting rings are arranged in the valve body, the two supporting rings are fixed in the end pipe in a clamping manner, and the supporting rings are matched with the pressure plate; and O-shaped rings are uniformly arranged between the valve rod and the valve body.
According to an advantageous embodiment, the outer circumferential wall of the middle part of the valve rod is uniformly provided with gear teeth; the upper end outer wall cover of valve rod is equipped with the operation cap, operation cap middle part inner wall evenly seted up with teeth of a cogwheel matched with tooth's socket, the upper end of operation cap is provided with the square groove, the lower extreme of operation cap evenly is provided with the ball of block at valve body upper end outer wall.
According to an advantageous embodiment, the middle part of the ball body is provided with a through hole along the axial direction of the ball body, the limiting piece is matched with the outer wall of the through hole of the ball body, the inner walls of the two ends of the through hole are arc chamfer-shaped, the inner walls of the two ends of the through hole are uniformly provided with balls along the circumferential direction of the through hole, and the ball body is matched with the secondary sealing assembly.
According to an advantageous embodiment, the end face of the sub limiting disc, which is in contact with the wire-aligning ring, is provided with a rubber ring; an annular groove is formed in one end face, close to the main limiting disc, of the sub limiting disc, and an annular sealing rubber ring attached to the annular groove is arranged on one end face, close to the sub limiting disc, of the main limiting disc.
According to an advantageous embodiment, the limiting piece comprises a push rod and an arc-shaped pressing plate, the push rod is fixedly arranged on the outer wall of the main limiting disc, the arc-shaped pressing plate is arranged at one end, close to the sphere, of the push rod, and the arc-shaped pressing plate is attached to the outer wall of the sphere.
According to an advantageous embodiment, a fixed pressing plate is arranged between the operation cap and the two diffusing pipes, and a bearing is arranged between the operation cap and the fixed pressing plate; the fixed clamp plates quantity be two, T type groove has evenly been seted up to one of them fixed clamp plate outer wall, and the outer wall of another fixed clamp plate corresponds the position with T type groove and is provided with T type arch, just be provided with the round hole that makes things convenient for the bolt fastening on the fixed clamp plate.
Compared with the prior art, the plastic ball valve for the gas pipeline has the following beneficial effects:
According to the invention, the primary fixing component is matched with the secondary sealing component, the primary fixing component is used for opening and closing the gas flowing in the gas pipeline, when the valve rod is driven by the operating cap to control the ball body to rotate clockwise, the ball body can be simply controlled to close the interior of the valve body, when the valve rod is driven by the operating cap to control the ball body to rotate anticlockwise, the ball body is driven by the operating cap to close the interior of the valve body, and meanwhile, the secondary sealing component can be driven to close the orifice of the diffusing pipe, so that the gas is prevented from leaking from the orifice of the diffusing pipe; the two-stage seal is convenient for maintenance personnel to maintain the relief valve or select whether to discharge the gas in the pipeline by controlling the rotation direction of the ball body when maintaining the pipeline.
The two-stage sealing arranged by the invention can be controlled by simply controlling the clockwise and anticlockwise rotation of the ball body; when the limiting piece is matched with the outer surface of the sphere, the contact point area between the limiting piece and the sphere is small, the opening and closing of the internal channel of the sphere rotation control valve body are not influenced, and the transverse movement of the limiting piece is conveniently controlled during the matching; when the sphere rotates clockwise, the limiting piece is clamped into the arc groove of the sphere, so that the limiting piece is not driven to generate displacement, and the main limiting disc is not driven to approach the sub limiting disc to seal; when the ball body rotates anticlockwise, the limiting piece is driven to move, and the main limiting disc is pushed to be close to the sub limiting disc in a fitting mode by the movement of the limiting piece, so that the sealing between the opposite end pipe, the diffusing pipe and the valve body is completed.
Drawings
Fig. 1 is a front view in section of the present invention.
Fig. 2 is an enlarged view of a portion of fig. 1 according to the present invention.
Fig. 3 is a partial enlarged view of the present invention at B in fig. 1.
Fig. 4 is a top view of the invention between the ball and the stop.
Fig. 5 is a structural view of the main limiting plate of the present invention.
Fig. 6 is a structural view of the sub-stopper of the present invention.
Fig. 7 is a structural view between two fixed platens of the present invention.
Reference numerals in the drawings: 1. a valve body; 2. an end pipe; 3. a primary seal assembly; 4. a secondary seal assembly; 5. a diffusing pipe; 6. a bleed valve; 7. a fixed pressing plate; 31. a valve seat; 32. a sphere; 33. a support ring; 34. a pressure plate; 35. an O-ring; 36. a valve stem; 37. an operating cap; 41. a main limiting disc; 42. a sub-limit plate; 43. a spring is abutted tightly; 44. wire ring alignment; 45. a limiting piece; 451. a push rod; 452. an arc-shaped pressing plate.
Detailed Description
The present application is described in further detail below with reference to FIGS. 1-6.
The embodiment of the application discloses a plastic ball valve for a gas pipeline, and specifically referring to fig. 1 and 2 in combination, the plastic ball valve comprises: the valve comprises a valve body 1, an end pipe 2, a primary sealing assembly 3, a secondary sealing assembly 4, a diffusing pipe 5 and a diffusing valve 6; the two ends of the valve body 1 are provided with end pipes 2, a secondary sealing assembly 4 is arranged in the end pipes 2, the outer wall of each end pipe 2 is provided with a through hole communicated with the inside of the end pipe 2, a diffusing pipe 5 is connected at the position of each through hole, the upper end of each diffusing pipe 5 is connected with a diffusing valve 6, and a dust cap is arranged at the upper end valve opening of each diffusing valve 6; the inside of valve body 1 is provided with first order seal assembly 3, second grade seal assembly 4 realize the seal to the through-hole through the cooperation of first order seal assembly 3.
The primary sealing assembly 3 is operated to control the cut-off and circulation of fuel gas in the pipeline, and the function of the bleeding valve 6 is mainly to bleed off residual gas in the pipeline when maintaining the downstream pipeline or equipment after the valve is closed so as to ensure the safety of maintenance work, and the bleeding valve can also be used for replacing gas in pipeline operation.
Referring to fig. 1,2 and 4 in combination, the primary seal assembly 3 further includes a valve seat 31, a ball 32, a support ring 33, a pressure plate 34, an O-ring 35 and a valve stem 36; the valve body 1 is internally provided with a ball body 32 in a rotating way, the upper end face and the lower end face of the ball body 32 are both provided with pressure plates 34, the inner wall of the pressure plates 34 is provided with a valve seat 31, the valve seat 31 is attached to the outer wall of the ball body 32, the valve body 1 is internally provided with two support rings 33, the two support rings 33 are both fixed in the end pipe 2 in a clamping way, and the support rings 33 are matched with the pressure plates 34; the upper end of the valve body 1 is provided with a valve rod 36 in a penetrating way, the lower end of the valve rod 36 is arranged on the outer wall of the upper end of the sphere 32 in a plugging manner, and an O-shaped ring 35 is uniformly arranged between the valve rod 36 and the valve body 1; the lower end of the valve rod 36 is pentagonal; arc grooves are formed in the outer wall of the ball body 32 in an oblique symmetry mode; gear teeth are uniformly arranged on the outer wall of the circumference of the middle part of the valve rod 36; the outer wall of the upper end of the valve rod 36 is sleeved with an operating cap 37, tooth grooves matched with the gear teeth are uniformly formed in the inner wall of the middle of the operating cap 37, a square groove is formed in the upper end of the operating cap 37, and balls clamped on the outer wall of the upper end of the valve body 1 are uniformly arranged at the lower end of the operating cap 37.
When the primary sealing assembly 3 is opened and closed, the valve rod 36 is indirectly driven to rotate by operating the operating cap 37 to further control the rotation of the ball 32, so that the opening and closing of the internal channel of the valve body 1 can be controlled, and as shown in fig. 4, when the ball 32 is controlled to rotate clockwise, only the ball 32 is controlled to close the internal channel of the valve body 1; when the ball 32 is controlled to rotate anticlockwise, the ball 32 can drive the secondary sealing assembly 4 to work to close the pipe orifice of the diffusing pipe 5 while closing the internal channel of the valve body 1, so that gas is prevented from leaking from the pipe orifice of the diffusing pipe 5; the two-stage seal can be quickly accomplished by simply controlling the clockwise and counterclockwise rotation of the ball 32.
Referring to fig. 3, the end tube 2 is provided with a stepped channel inside, and the secondary seal assembly 4 includes a main limiting disc 41, a sub limiting disc 42, a tightening spring 43, a wire-aligning ring 44 and a limiting member 45; the disc surface of the main limiting disc 41 and the disc surface of the sub limiting disc 42 are uniformly provided with air holes along the circumferential direction, the positions of the air holes on the disc surface of the main limiting disc 41 and the air holes on the disc surface of the sub limiting disc 42 are not corresponding to each other, and the main limiting disc 41 is arranged in a stepped channel on one side of the end pipe 2, which is close to the sphere 32, in a sliding fit manner; the sub limiting disc 42 is arranged in the stepped channel of the side of the end pipe 2 far away from the sphere 32; the sub limiting disc 42 is fixed through a wire ring 44 arranged inside the end pipe 2, a circular groove is formed in one end face, close to each other, of the main limiting disc 41 and the sub limiting disc 42, a tight supporting spring 43 is connected inside the two circular grooves, and a limiting piece 45 is arranged on one end face, far away from the sub limiting disc 42, of the main limiting disc 41.
Referring to fig. 4, a through hole is formed in the middle of the ball 32 along the axial direction thereof, inner walls at two ends of the through hole are provided with arc chamfer shapes, balls are uniformly arranged at the inner walls at two ends of the through hole along the circumferential direction thereof, the ball 32 is matched with the secondary sealing assembly 4, and the limiting piece 45 is conveniently matched with the inner walls at two ends of the through hole to flexibly move on the outer wall of the ball 32.
Referring to fig. 3, the limiting member 45 is matched with the outer wall of the through hole of the ball 32; when the ball 32 drives the limiting piece 45 to move to further control the main limiting disc 41 to be attached to the sub-limiting disc 42, as shown in fig. 4, the ball 32 rotates anticlockwise to drive the limiting piece 45 to move, and the limiting piece 45 moves to push the main limiting disc 41 to be attached to the sub-limiting disc 42, so that the sealing between the opposite end pipe 2, the diffusing pipe 5 and the valve body 1 is further completed.
Referring to fig. 4 in combination, the limiting member 45 includes a push rod 451 and an arc-shaped pressing plate 452, the push rod 451 is fixedly disposed on the outer wall of the main limiting disc 41, one end of the push rod 451, which is close to the sphere 32, is provided with the arc-shaped pressing plate 452, and the arc-shaped pressing plate 452 is attached to the outer wall of the sphere 32; the arc-shaped pressing plate 452 is designed to be narrow, and only covers a small part of the area of the through hole, but does not completely block the through hole; when the arranged arc-shaped pressing plate 452 is matched with the outer surface of the ball body 32, the contact point area between the arc-shaped pressing plate 452 and the ball body 32 is small, and the opening and closing of the internal channel of the valve body 1 can not be influenced by the rotation of the ball body 32; and facilitates control of the lateral movement of the carrier 451 during mating. As shown in fig. 4, when the ball 32 rotates clockwise, the arc-shaped pressing plate 452 will be clamped into the arc groove of the ball 32, so as not to drive the ejector rod 451 to displace, and further, not to drive the main limiting plate 41 to approach the sub limiting plate 42 for sealing.
Referring to fig. 3,5 and 6, the end surface of the sub-limiting plate 42 contacting with the wire-aligning ring 44 is provided with a rubber ring; an annular groove is formed in the end face, close to the main limiting disc 41, of the sub limiting disc 42, and an annular sealing rubber ring attached to the annular groove is arranged on the end face, close to the sub limiting disc 42, of the main limiting disc 41; the arrangement of the rubber ring and the annular sealing rubber ring improves the sealing strength of the valve body 1.
Referring to fig. 1 and 7 in combination, a fixed pressing plate 7 is commonly disposed between the operating cap 37 and the two diffusing pipes 5, and a bearing is disposed between the operating cap 37 and the fixed pressing plate 7; the number of the fixed pressing plates 7 is two, T-shaped grooves are uniformly formed in the outer wall of one fixed pressing plate 7, T-shaped protrusions are arranged at positions, corresponding to the T-shaped grooves, of the outer wall of the other fixed pressing plate 7, and round holes convenient for bolt fixing are formed in the fixed pressing plate 7.
The two diffusing pipes 5 and the operating cap 37 can be connected into a whole by arranging the fixed pressing plate 7, so that leakage is avoided when the interface position of the diffusing pipe 5 and the end pipe 2 shakes; and the mode of butting, embedding and fixing the T-shaped groove and the T-shaped bulge is adopted between the two fixed pressing plates 7, so that the later screwing of the bolts can be facilitated.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (4)
1. A gas conduit plastic ball valve comprising: the device comprises a valve body (1), an end pipe (2), a primary sealing assembly (3), a secondary sealing assembly (4), a diffusing pipe (5) and a diffusing valve (6); the method is characterized in that: the two ends of the valve body (1) are provided with end pipes (2), the inside of each end pipe (2) is provided with a secondary sealing assembly (4), the outer wall of each end pipe (2) is provided with a through hole communicated with the inside of the end pipe, the position of each through hole is connected with a diffusing pipe (5), the upper end of each diffusing pipe (5) is connected with a diffusing valve (6), and the valve opening at the upper end of each diffusing valve (6) is provided with a dust cap; a first-stage sealing assembly (3) is arranged in the valve body (1), and the second-stage sealing assembly (4) seals the through hole through the first-stage sealing assembly (3);
the primary sealing assembly (3) comprises a ball body (32) and a valve rod (36); a ball body (32) is rotatably arranged in the valve body (1), a valve rod (36) is arranged at the upper end of the valve body (1) in a penetrating way, and the lower end of the valve rod (36) is arranged on the outer wall of the upper end of the ball body (32) in a plugging manner; arc grooves are formed in the outer wall of the ball body (32) in an oblique symmetry mode;
the end pipe (2) is internally provided with a stepped channel, and the secondary sealing assembly (4) comprises a main limiting disc (41), a sub limiting disc (42), a tight supporting spring (43), a wire aligning ring (44) and a limiting piece (45); the disc surface of the main limiting disc (41) and the disc surface of the sub limiting disc (42) are uniformly provided with air holes along the circumferential direction, the positions of the air holes of the disc surface of the main limiting disc (41) and the air holes of the disc surface of the sub limiting disc (42) are not corresponding to each other, and the main limiting disc (41) is arranged in a stepped channel of one side, close to the sphere (32), of the end pipe (2) in a sliding fit mode; the sub limiting disc (42) is arranged in the stepped channel at one side of the end pipe (2) far away from the sphere (32); the sub limiting disc (42) is fixed through a wire ring (44) arranged in the end pipe (2), one end face, close to each other, of the main limiting disc (41) and the sub limiting disc (42) is provided with a circular groove, the inside of the two circular grooves is connected with a tight supporting spring (43) together, and one end face, far away from the sub limiting disc (42), of the main limiting disc (41) is provided with a limiting piece (45);
The middle part of the ball body (32) is provided with a through hole along the axial direction of the ball body, a limiting piece (45) is matched with the outer wall of the through hole of the ball body (32), the inner walls of the two ends of the through hole are arc chamfer-shaped, the inner walls of the two ends of the through hole are uniformly provided with balls along the circumferential direction of the through hole, and the ball body (32) is matched with the secondary sealing assembly (4);
the end face of the sub limiting disc (42) contacted with the wire aligning ring (44) is provided with a rubber ring; an annular groove is formed in the end face, close to the main limiting disc (41), of the sub limiting disc (42), and an annular sealing rubber ring attached to the annular groove is arranged on the end face, close to the sub limiting disc (42), of the main limiting disc (41);
The limiting piece (45) comprises a push rod (451) and an arc-shaped pressing plate (452), the push rod (451) is fixedly arranged on the outer wall of the main limiting disc (41), one end, close to the sphere (32), of the push rod (451) is provided with the arc-shaped pressing plate (452), and the arc-shaped pressing plate (452) is attached to the outer wall of the sphere (32);
When the sphere (32) drives the limiting part (45) to move and control the main limiting disc (41) to be attached to and close to the sub limiting disc (42), the sphere (32) rotates anticlockwise to drive the limiting part (45) to move, and the limiting part (45) can push the main limiting disc (41) to be attached to and close to the sub limiting disc (42), so that the sealing between the opposite end pipe (2), the diffusing pipe (5) and the valve body (1) is completed.
2. A gas conduit plastic ball valve according to claim 1, wherein said primary seal assembly (3) further comprises a valve seat (31), a support ring (33), a pressure plate (34) and an O-ring (35); the valve is characterized in that pressure plates (34) are arranged on the upper end face and the lower end face of the ball body (32), a valve seat (31) is arranged on the inner wall of the pressure plate (34), the valve seat (31) is attached to the outer wall of the ball body (32), two supporting rings (33) are further arranged in the valve body (1), the two supporting rings (33) are fixed in the end pipe (2) in a clamping mode, and the supporting rings (33) are matched with the pressure plate (34); and O-shaped rings (35) are uniformly arranged between the valve rod (36) and the valve body (1).
3. A gas pipeline plastic ball valve according to claim 1, characterized in that the middle circumference outer wall of the valve rod (36) is uniformly provided with gear teeth; the upper end outer wall cover of valve rod (36) is equipped with operation cap (37), operation cap (37) middle part inner wall evenly seted up with teeth of a cogwheel matched with tooth socket, the upper end of operation cap (37) is provided with the square groove, the lower extreme of operation cap (37) evenly is provided with the ball of block at valve body (1) upper end outer wall.
4. A plastic ball valve for gas pipeline according to claim 3, characterized in that a fixed pressing plate (7) is arranged between the operating cap (37) and the two diffusing pipes (5), and a bearing is arranged between the operating cap (37) and the fixed pressing plate (7); the number of the fixed pressing plates (7) is two, T-shaped grooves are uniformly formed in the outer wall of one fixed pressing plate (7), T-shaped protrusions are arranged at positions, corresponding to the T-shaped grooves, of the outer wall of the other fixed pressing plate (7), and round holes convenient for bolt fixing are formed in the fixed pressing plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410423824.3A CN118009059B (en) | 2024-04-10 | 2024-04-10 | Plastic ball valve for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410423824.3A CN118009059B (en) | 2024-04-10 | 2024-04-10 | Plastic ball valve for gas pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118009059A CN118009059A (en) | 2024-05-10 |
| CN118009059B true CN118009059B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410423824.3A Active CN118009059B (en) | 2024-04-10 | 2024-04-10 | Plastic ball valve for gas pipeline |
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| CN (1) | CN118009059B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797865A (en) * | 2012-07-26 | 2012-11-28 | 北京京燃凌云燃气设备有限公司 | Polyethylene (PE) double-diffusing ball valve |
| CN105114652A (en) * | 2015-09-13 | 2015-12-02 | 苏州市燃气设备阀门制造有限公司 | Steel-plastics ball valve structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204961888U (en) * | 2015-09-13 | 2016-01-13 | 苏州市燃气设备阀门制造有限公司 | Ball valve structure is moulded to steel |
| CN107514482A (en) * | 2016-06-16 | 2017-12-26 | 成都德善能科技有限公司 | The valve base sealing of ball valve is diffused in a kind of steel modeling |
| CN107606220B (en) * | 2017-11-06 | 2018-08-07 | 泰州英格伟精密机械有限公司 | A kind of ball valve with self-checking function |
| CN212718119U (en) * | 2020-06-01 | 2021-03-16 | 昆山市恒安工业气体有限公司 | Gas ball valve middle cavity diffusing device |
| CN219472813U (en) * | 2022-11-28 | 2023-08-04 | 联塑科技发展(贵阳)有限公司 | Bleeding valve |
| CN219734266U (en) * | 2022-12-05 | 2023-09-22 | 联塑科技发展(贵阳)有限公司 | Diffusion type ball valve convenient to maintain |
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2024
- 2024-04-10 CN CN202410423824.3A patent/CN118009059B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797865A (en) * | 2012-07-26 | 2012-11-28 | 北京京燃凌云燃气设备有限公司 | Polyethylene (PE) double-diffusing ball valve |
| CN105114652A (en) * | 2015-09-13 | 2015-12-02 | 苏州市燃气设备阀门制造有限公司 | Steel-plastics ball valve structure |
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