CN221525632U - C-shaped wear-resistant ball valve for propenyl material device - Google Patents
C-shaped wear-resistant ball valve for propenyl material device Download PDFInfo
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- CN221525632U CN221525632U CN202420287143.4U CN202420287143U CN221525632U CN 221525632 U CN221525632 U CN 221525632U CN 202420287143 U CN202420287143 U CN 202420287143U CN 221525632 U CN221525632 U CN 221525632U
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- 239000000463 material Substances 0.000 title claims abstract description 10
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 title abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 47
- 238000012856 packing Methods 0.000 claims abstract description 41
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 5
- 230000009471 action Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 5
- 238000004220 aggregation Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 propylene-ethylene Chemical group 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a C-shaped wear-resistant ball valve for a propenyl material device, which comprises a left valve body, a right valve body, a valve cover, a valve seat, a C-shaped valve ball, a valve rod, a bottom shaft, a sealing ring, a supporting ring, a disc spring, a pressing ring, a first bushing, a first dust ring, a second bushing, a second dust ring, a plane bearing, a packing pressing plate, a limiting ring and a packing box; the rotation center of the C-shaped valve ball and the geometric center of the valve seat are eccentrically arranged, and the rotation center of the C-shaped valve ball and the center of the left valve body flow passage are eccentrically arranged; the third dust ring is positioned at the left side of the disc spring, the right end of the disc spring is contacted with the left end of the supporting ring, and the right end of the supporting ring is contacted with the left end of the sealing ring; the inner and outer diameter edges of the sealing surface of the valve seat are provided with scraper structures. The utility model can reduce the opening and closing torque of the valve, improve the stability of the action and prolong the service life; the utility model can ensure the safe, stable and efficient operation of the propenyl material device.
Description
Technical Field
The utility model belongs to the technical field of instruments and meters, and particularly discloses a C-shaped wear-resistant ball valve for a propylene-based material device.
Background
The propylene-based elastomer is produced by combining a metallocene catalysis technology and a solution polymerization technology, is a unique propylene-ethylene semi-crystalline copolymer, has unique high elasticity, flexibility and low-temperature impact resistance, and particularly has excellent compatibility with PP. At present, wear-resistant ball valves for propylene-based material devices mainly depend on import from abroad, wherein most of the wear-resistant ball valves adopt a floating ball O-shaped straight-through ball valve structure. However, in the actual use process, the temperature of the propylene-based polymer solution in the pipeline is 170-210 ℃, so that a medium can enter the valve cavity in the valve opening and closing process. When the temperature in the valve is reduced, the medium can automatically gather in the valve cavity to form solid or solid-liquid mixture, so that the torque of the valve is increased, and the valve is blocked or even can not be opened or closed; meanwhile, due to the adoption of the floating ball structure, a spring is arranged on the valve seat at one side, the other side valve seat has no spring. When the pressure of the springless side valve seat is increased, the valve ball is pushed to the side with the spring valve seat by the pressure of the medium, so that the medium is adsorbed on the sealing surfaces of the valve ball and the springless side valve seat, the valve is leaked, the requirement of two-way tight cutting cannot be met, and the device is forced to stop running so as to repair or replace the valve, thereby causing unnecessary economic loss and time waste.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the C-shaped wear-resistant ball valve for the propenyl material device, which can improve the stability of the action and prolong the service life.
According to the technical scheme provided by the utility model, the C-shaped wear-resistant ball valve for the propenyl material device comprises a left valve body, a right valve body, a valve cover, a valve seat, a C-shaped valve ball, a valve rod, a bottom shaft, a sealing ring, a supporting ring, a disc spring, a pressing ring, a first bushing, a first dust ring, a second bushing, a second dust ring, a plane bearing, a packing pressing plate, a limiting ring and a packing box;
The left valve body and the right valve body are fixed together, the left valve body is provided with a left valve body flow channel, the right valve body is provided with a right valve body flow channel, the right end part of the left valve body is sleeved on the inner side of the left end part of the right valve body, a valve seat is arranged in the left valve body through a pressing ring, and the valve seat is in sealing fit with the left valve body; a C-shaped valve ball is arranged in the right valve body, a valve rod mounting blind hole is formed in the upper end of the C-shaped valve ball, and a bottom shaft mounting blind hole is formed in the lower end of the C-shaped valve ball;
a valve rod is rotatably installed on a right valve body above a corresponding C-shaped valve ball, a limiting ring is arranged on the outer circle of the valve rod positioned in the right valve body, a plane bearing is arranged on the outer side of the valve rod above the corresponding limiting ring, a first bushing and a first dust ring are arranged on the outer side of the valve rod below the corresponding limiting ring, the first bushing is positioned above the first dust ring, the first dust ring is provided with an outer step, the outer circle of the valve rod is in clearance fit with the inner circle of the first dust ring, the outer circle of the first dust ring is in interference fit with the right valve body, the lower end of the valve rod is installed in a valve rod installation blind hole, and the lower end face of the valve rod is arranged at intervals with the bottom surface of the valve rod installation blind hole;
A bottom shaft is fixedly arranged in the right valve body below the corresponding C-shaped valve ball, a second bushing and a second dust ring are arranged outside the upper end of the bottom shaft, the second bushing is positioned above the second dust ring, the second dust ring is provided with an outer step, the second dust ring is integrally positioned in the bottom shaft mounting blind hole, the second bushing above the outer step is positioned in the bottom shaft mounting blind hole, the C-shaped valve ball is seated on the outer step of the second dust ring, and the upper end face of the bottom shaft and the upper end face of the second bushing are arranged at intervals with the top surface of the bottom shaft mounting blind hole;
the valve cover is provided with a stuffing box, the valve cover is sleeved on the outer side of the valve rod and is fixedly connected with the upper end part of the right valve body, the stuffing pressing plate is sleeved on the outer side of the valve rod and is fixedly connected with the upper end part of the valve cover, and a stuffing assembly is arranged in the stuffing box;
The rotation center of the C-shaped valve ball and the geometric center of the valve seat are eccentrically arranged, and the rotation center of the C-shaped valve ball and the center of the left valve body flow passage are eccentrically arranged;
A sealing ring, a supporting ring, a disc spring and a third dust ring are arranged between the valve seat and the left valve body, the third dust ring is positioned at the left side of the disc spring, the right end of the disc spring is contacted with the left end of the supporting ring, and the right end of the supporting ring is contacted with the left end of the sealing ring;
and scraper structures are arranged at the edges of the inner diameter and the outer diameter of the sealing surface of the valve seat.
Preferably, a first winding gasket is arranged between the left valve body and the right valve body, a second winding gasket is arranged between the valve cover and the right valve body, and a third winding gasket is arranged between the bottom shaft and the right valve body.
Preferably, the packing assembly comprises a packing pad, packing and a packing pressing sleeve, wherein the packing is positioned on the packing pad, and the packing pressing sleeve is positioned on the packing; the lower end of the packing pad is contacted with the valve cover, and the upper end of the packing pressing sleeve is contacted with the packing pressing plate.
Compared with the prior art, the utility model has the following advantages:
1. The valve seat adopts a split elastic self-compensating structure, so that the fatigue wear of the sealing surface of the valve and the automatic compensation of the medium temperature and pressure fluctuation in the pipeline can be effectively realized.
2. The valve ball adopts a double eccentric design, and the valve ball performs double-vector cam motion of rotation and translation around the rotation center, namely, the valve ball is in zero contact with the valve seat in the opening and closing processes of the valve, so that the running torque of the valve is effectively reduced, and the wear resistance is improved.
3. The utility model can generate a mechanical forced sealing structure with cam wedging between the valve ball and the valve seat, and can realize bidirectional tight cutting without depending on fluid pressure.
4. The utility model can effectively prevent the valve rod from locking caused by self-aggregation of the medium in the gap between the valve rod and the right valve body, improves the stability of the valve opening and closing action and prolongs the service life of the valve.
5. The ball valve structure of the utility model is provided with a single valve seat and an open valve cavity, and medium can not gather in the flow passage and the valve cavity in the opening and closing process, so that the valve can not be blocked or jammed due to accumulation.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic view of a valve seat installation in the present utility model.
FIG. 3 is a schematic view of a dust-proof structure of a valve stem according to the present utility model.
Fig. 4 is a schematic view of a dustproof structure of a bottom shaft in the present utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
1-4, The C-type wear-resistant ball valve for the propenyl material device comprises a left valve body 1, a right valve body 2, a valve cover 3, a valve seat 4, a C-type valve ball 5, a valve rod 6, a bottom shaft 8, a sealing ring 9, a supporting ring 10, a disc spring 11, a pressing ring 12, a first lining 13, a first dust ring 14, a second lining 15, a second dust ring 16, a plane bearing 17, a packing pressing plate 24, a limiting ring 28 and a packing box 29;
The left valve body 1 and the right valve body 2 are fixed together, the left valve body 1 is provided with a left valve body flow passage, the right valve body 2 is provided with a right valve body flow passage, the right end part of the left valve body 1 is sleeved on the inner side of the left end part of the right valve body 2, a pressing ring 12 is fixed in the left valve body 1 through a first inner hexagonal screw 18, the valve seat 4 is arranged through the pressing ring 12, and the valve seat 4 is in sealing fit with the left valve body 1; a C-shaped valve ball 5 is arranged in the right valve body 2, a valve rod mounting blind hole is formed in the upper end of the C-shaped valve ball 5, and a bottom shaft mounting blind hole is formed in the lower end of the C-shaped valve ball 5;
A valve rod 6 is rotatably installed on the right valve body 2 above the corresponding C-shaped valve ball 5, a limiting ring 28 is arranged on the outer circle of the valve rod 6 positioned in the right valve body 2, a plane bearing 17 is arranged on the outer side of the valve rod 6 above the corresponding limiting ring 28, a first bushing 13 and a first dust ring 14 are arranged on the outer side of the valve rod 6 below the corresponding limiting ring 28, the first bushing 13 is positioned above the first dust ring 14, the first dust ring 14 is provided with an outer step, the outer circle of the valve rod 6 is in clearance fit with the inner circle of the first dust ring 14, the outer circle of the first dust ring 14 is in interference fit with the right valve body 2, the lower end of the valve rod 6 is installed in a valve rod installation blind hole, and the lower end surface of the valve rod 6 is arranged at intervals with the bottom surface of the valve rod installation blind hole; the outer circle of the first dust ring 14 is in interference fit with the right valve body 2, and the inner circle of the first dust ring 14 is in micro clearance fit with the outer circle of the valve rod 6 (single-side clearance is smaller than 0.05 mm). The connecting mode can effectively prevent the valve rod 6 from locking due to self-aggregation of the medium in the gap between the valve rod 6 and the right valve body 2, improves the stability of the valve opening and closing action, and prolongs the service life of the valve.
A bottom shaft 8 is fixedly arranged in the right valve body 2 below the corresponding C-shaped valve ball 5 through an outer hexagon bolt 25, a second bushing 15 and a second dust ring 16 are arranged outside the upper end of the bottom shaft 8, the second bushing 15 is positioned above the second dust ring 16, the second dust ring 16 is provided with an outer step, the whole second dust ring 16 is positioned in a bottom shaft installation blind hole, the second bushing 15 above the outer step is positioned in the bottom shaft installation blind hole, the C-shaped valve ball 5 is seated on the outer step of the second dust ring 16, and the upper end face of the bottom shaft 8 and the upper end face of the second bushing 15 are arranged at intervals with the top face of the bottom shaft installation blind hole;
The valve cover 3 is provided with a stuffing box 29, the valve cover 3 is sleeved on the outer side of the valve rod 6 and is fixedly connected with the upper end part of the right valve body 2 through a second inner hexagon screw 20, the stuffing pressing plate 24 is sleeved on the outer side of the valve rod 6 and is fixedly connected with the upper end part of the valve cover 3, and a stuffing assembly is arranged in the stuffing box 29;
The rotation center of the C-shaped valve ball 5 and the geometric center of the valve seat 4 are arranged eccentrically, and the rotation center of the C-shaped valve ball 5 and the center of the left valve body flow passage are arranged eccentrically. The C-shaped valve ball 5 rotates and translates around the rotation center, namely, the C-shaped valve ball 5 is in zero contact with the valve seat 4 in the opening and closing processes of the valve, so that the running torque of the valve is effectively reduced, and the wear resistance is improved.
A sealing ring 9, a supporting ring 10, a disc spring 11 and a third dust ring 27 are arranged between the valve seat 4 and the left valve body 1, the third dust ring 27 is positioned on the left side of the disc spring 11, the right end of the disc spring 11 is contacted with the left end of the supporting ring 10, and the right end of the supporting ring 10 is contacted with the left end of the sealing ring 9. The disc spring 11, the support ring 10 and the sealing ring 9 form a split elastic self-compensating structure. Can effectively compensate the fatigue wear of the sealing surface of the valve and the temperature and pressure fluctuation of the medium in the pipeline.
The inner and outer diameter edges of the sealing surface of the valve seat 4 are provided with scraper structures.
A first winding gasket 19 is arranged between the left valve body 1 and the right valve body 2, a second winding gasket 21 is arranged between the valve cover 3 and the right valve body 2, and a third winding gasket 26 is arranged between the bottom shaft 8 and the right valve body 2.
The packing assembly comprises a packing pad 22, a packing 7 and a packing pressing sleeve 23, wherein the packing 7 is positioned on the packing pad 22, and the packing pressing sleeve 23 is positioned on the packing 7; the lower end of the packing 22 contacts with the valve cover 3, and the upper end of the packing pressing sleeve 23 contacts with the packing pressing plate 24.
The working principle of the utility model is as follows:
Because the C-shaped valve ball 5 adopts a double eccentric design, when the valve rod 6 is rotated anticlockwise to open the C-shaped valve ball 5, the C-shaped valve ball 5 performs cam motion, and within 10 degrees of opening, the valve seat 4 is always in contact with the C-shaped valve ball 5 due to the action of the spring force of the disc spring 11, the scraper structure of the sealing surface of the valve seat 4 continuously cleans the surface of the C-shaped valve ball 5, and after the valve seat is opened to 10 degrees, the C-shaped valve ball 5 starts to separate from the valve seat 4 to perform friction-free rotation motion until the valve is fully opened; similarly, when the valve rod 6 is rotated clockwise to close the C-shaped valve ball 5, the C-shaped valve ball 5 performs cam motion, and the valve seat 4 is always in contact with the C-shaped valve ball 5 under the action of the spring force of the disc spring 11 within the last 10 degrees of closing, and the scraper structure of the sealing surface of the valve seat 4 continuously cleans the surface of the C-shaped valve ball 5 until the closing end point, and mechanical forced sealing is realized by means of the torque of an actuating mechanism, so that the bidirectional tight cutting performance of the valve is ensured.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.
Claims (3)
1. A C-shaped wear-resistant ball valve for a propylene-based material device comprises a left valve body (1), a right valve body (2), a valve cover (3), a valve seat (4), a C-shaped valve ball (5), a valve rod (6), a bottom shaft (8), a sealing ring (9), a supporting ring (10), a disc spring (11), a pressing ring (12), a first bushing (13), a first dust ring (14), a second bushing (15), a second dust ring (16), a plane bearing (17), a packing pressing plate (24), a limiting ring (28) and a packing box (29);
The method is characterized in that: the left valve body (1) and the right valve body (2) are fixed together, the left valve body (1) is provided with a left valve body flow passage, the right valve body (2) is provided with a right valve body flow passage, the right end part of the left valve body (1) is sleeved on the inner side of the left end part of the right valve body (2), the valve seat (4) is arranged in the left valve body (1) through the pressing ring (12), and the valve seat (4) is in sealing fit with the left valve body (1); a C-shaped valve ball (5) is arranged in the right valve body (2), a valve rod installation blind hole is formed in the upper end of the C-shaped valve ball (5), and a bottom shaft installation blind hole is formed in the lower end of the C-shaped valve ball (5);
A valve rod (6) is rotatably arranged on a right valve body (2) above a corresponding C-shaped valve ball (5), a limiting ring (28) is arranged on the outer circle of the valve rod (6) positioned in the right valve body (2), a plane bearing (17) is arranged on the outer side of the valve rod (6) above the corresponding limiting ring (28), a first bushing (13) and a first dust ring (14) are arranged on the outer side of the valve rod (6) below the corresponding limiting ring (28), the first bushing (13) is positioned above the first dust ring (14), the first dust ring (14) is provided with an outer step, the outer circle of the valve rod (6) is in clearance fit with the inner circle of the first dust ring (14), the outer circle of the first dust ring (14) is in interference fit with the right valve body (2), the lower end of the valve rod (6) is arranged in a valve rod mounting blind hole, and the lower end face of the valve rod (6) is in interval arrangement with the bottom face of the valve rod mounting blind hole;
a bottom shaft (8) is fixedly arranged in the right valve body (2) below the corresponding C-shaped valve ball (5), a second bushing (15) and a second dust ring (16) are arranged outside the upper end of the bottom shaft (8), the second bushing (15) is positioned above the second dust ring (16), the second dust ring (16) is provided with an outer step, the second dust ring (16) is integrally positioned in a bottom shaft mounting blind hole, the second bushing (15) above the outer step is positioned in the bottom shaft mounting blind hole, the C-shaped valve ball (5) is seated on the outer step of the second dust ring (16), and the upper end face of the bottom shaft (8) and the upper end face of the second bushing (15) are arranged at intervals with the top surface of the bottom shaft mounting blind hole;
The valve cover (3) is provided with a stuffing box (29), the valve cover (3) is sleeved on the outer side of the valve rod (6) and is fixedly connected with the upper end part of the right valve body (2), the stuffing pressing plate (24) is sleeved on the outer side of the valve rod (6) and is fixedly connected with the upper end part of the valve cover (3), and a stuffing assembly is arranged in the stuffing box (29);
The rotation center of the C-shaped valve ball (5) and the geometric center of the valve seat (4) are eccentrically arranged, and the rotation center of the C-shaped valve ball (5) and the center of the left valve body flow passage are eccentrically arranged;
A sealing ring (9), a supporting ring (10), a disc spring (11) and a third dust ring (27) are arranged between the valve seat (4) and the left valve body (1), the third dust ring (27) is positioned on the left side of the disc spring (11), the right end of the disc spring (11) is contacted with the left end of the supporting ring (10), and the right end of the supporting ring (10) is contacted with the left end of the sealing ring (9);
The edge of the inner diameter and the outer diameter of the sealing surface of the valve seat (4) is provided with a scraper structure.
2. The wear-resistant ball valve of claim 1, wherein: a first winding gasket (19) is arranged between the left valve body (1) and the right valve body (2), a second winding gasket (21) is arranged between the valve cover (3) and the right valve body (2), and a third winding gasket (26) is arranged between the bottom shaft (8) and the right valve body (2).
3. The wear-resistant ball valve of claim 1, wherein: the packing assembly comprises a packing pad (22), a packing (7) and a packing pressing sleeve (23), wherein the packing (7) is positioned on the packing pad (22), and the packing pressing sleeve (23) is positioned on the packing (7); the lower end of the packing cushion (22) is contacted with the valve cover (3), and the upper end of the packing pressing sleeve (23) is contacted with the packing pressing plate (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420287143.4U CN221525632U (en) | 2024-02-06 | 2024-02-06 | C-shaped wear-resistant ball valve for propenyl material device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420287143.4U CN221525632U (en) | 2024-02-06 | 2024-02-06 | C-shaped wear-resistant ball valve for propenyl material device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221525632U true CN221525632U (en) | 2024-08-13 |
Family
ID=92178745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420287143.4U Active CN221525632U (en) | 2024-02-06 | 2024-02-06 | C-shaped wear-resistant ball valve for propenyl material device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221525632U (en) |
-
2024
- 2024-02-06 CN CN202420287143.4U patent/CN221525632U/en active Active
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