CN219366844U - Soft and hard double-seal valve core of regulating valve - Google Patents
Soft and hard double-seal valve core of regulating valve Download PDFInfo
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- CN219366844U CN219366844U CN202320791663.4U CN202320791663U CN219366844U CN 219366844 U CN219366844 U CN 219366844U CN 202320791663 U CN202320791663 U CN 202320791663U CN 219366844 U CN219366844 U CN 219366844U
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- sealing ring
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Abstract
The utility model discloses a soft and hard double-seal valve core of an adjusting valve, which comprises a valve core lower connecting plate, wherein a valve core middle connecting bushing and a valve core upper connecting plate are sequentially connected to the valve core lower connecting plate, a third boss and a second boss are respectively formed at the upper end and the lower end of the valve core middle connecting bushing, a valve core upper sealing ring is sleeved on the outer wall of the third boss, the valve core upper sealing ring is clamped between the valve core upper connecting plate and the valve core middle connecting bushing, a valve core lower sealing ring is sleeved on the outer wall of the second boss, the valve core lower sealing ring is clamped between the valve core lower connecting plate and the valve core middle connecting bushing, and the valve core lower connecting plate, the valve core middle connecting bushing and the valve core upper connecting plate are connected through fasteners.
Description
Technical Field
The utility model relates to the technical field of valve cores, in particular to a soft and hard double-seal valve core of an adjusting valve.
Background
The valve element is a valve part for realizing the basic functions of direction control, pressure control or flow control by moving the valve body. In the prior art, the regulating valve is in hard contact with the valve core and the valve seat at the mutually sealed positions, namely, stainless steel is in contact with stainless steel, and the leakage grade is grade IV (ANSI B16.104-1976). Can only be applied to liquid medium and working conditions with higher temperature or less strict leakage requirements. For the regulating valve, the sealing performance between the valve core and the valve seat has great influence on the regulating precision, and the existing regulating valve generally adopts a single sealing mode, so that the existing regulating valve cannot have better sealing performance.
Disclosure of Invention
The utility model aims to provide a soft and hard double-seal valve core of an adjusting valve, wherein a valve core lower sealing ring, a valve core middle connecting bushing, a valve core upper sealing ring and a valve core upper connecting plate are sequentially connected on a valve core lower connecting plate, and the sealing rings are made of flexible materials, so that the valve core is sealed by soft and hard surface contact, the sealing performance of the adjusting valve is enhanced to achieve the VI level leakage in an ANSI standard, the zero level leakage can be customized, and the adjusting valve is suitable for common gas and relatively strict working conditions requiring leakage.
The utility model provides the following technical scheme: the utility model provides a soft and hard double seal valve core of governing valve, includes the case lower junction plate, connecting bush and case upper junction plate have been connected gradually in the middle of the case on the case lower junction plate, the upper end and the lower extreme of case intermediate junction bush have been formed respectively third boss and second boss, cup jointed the case upper seal ring on the outer wall of third boss, the case upper seal ring centre gripping is between case upper junction plate and case intermediate junction bush, cup jointed the case lower seal ring on the outer wall of second boss, case lower seal ring centre gripping is between case lower junction plate and case intermediate junction bush, case lower junction plate, case intermediate junction bush and case upper junction plate pass through the fastener and connect.
For facilitating positioning installation of a valve core lower connecting plate, a valve core middle connecting bushing and a valve core upper connecting plate, a first boss is formed in the center of the upper end of the valve core lower connecting plate, a second center hole is formed in the center of the valve core middle connecting bushing, the second center hole of the valve core middle connecting bushing is nested on the first boss, a fourth boss is formed in the center of the lower end of the valve core upper connecting plate, and the fourth boss is embedded in the second center hole.
In order to connect the valve core upper connecting plate, the valve core intermediate connecting bushing and the valve core lower connecting plate together, threaded holes are formed in the valve core intermediate connecting bushing, through holes are formed in the valve core upper connecting plate and the valve core lower connecting plate, screws are connected with threads in the threaded holes, the screws sequentially penetrate through the valve core upper connecting plate, the valve core intermediate connecting bushing and the valve core lower connecting plate, nuts are connected to the lower ends of the screws, and the valve core intermediate connecting bushing is fixed between the valve core upper connecting plate and the valve core lower connecting plate through the screws and the nuts.
In order to improve the tightness between the middle connecting bushing of the valve core and the upper connecting plate and the lower connecting plate of the valve core respectively, O-shaped sealing ring grooves are formed in the inner edges of the second boss and the third boss, and O-shaped sealing rings are embedded in the O-shaped sealing ring grooves.
In order to improve the tightness between the valve core middle connecting bushing and the valve core upper connecting plate and the valve core lower connecting plate respectively, an O-shaped sealing ring groove is also formed in the lower end of the valve core upper connecting plate, an O-shaped sealing ring groove is also formed in the upper end of the valve core lower connecting plate, the O-shaped sealing rings are embedded in the O-shaped sealing ring groove, and the O-shaped sealing rings are located on the inner sides of the valve core lower sealing ring and the valve core upper sealing ring.
According to the technical scheme, the upper end of the valve core upper connecting plate is provided with the top surface boss in a molding mode, and a round hole is formed in the top surface boss and used for being connected with the valve rod.
In order to improve the tightness between the valve core and the valve body, chamfer angles are formed on the lower end surfaces of the upper valve core sealing ring and the lower valve core sealing ring.
In order to guide the installation of the valve core, a chamfer is formed on the lower end face of the lower connecting plate of the valve core.
In order to improve the service life of the valve core, the lower sealing ring of the valve core and the upper sealing ring of the valve core are made of PPL materials.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The valve core lower connecting plate is sequentially connected with the valve core middle connecting bush and the valve core upper connecting plate, a valve core lower sealing ring is arranged between the valve core lower connecting plate and the valve core middle connecting bush, and a valve core upper sealing ring is arranged between the valve core upper connecting plate and the valve core middle connecting bush and is made of flexible materials, so that the valve core is sealed through soft and hard surface contact; the device is suitable for the working conditions of common gas and relatively strict leakage requirements;
(2) The first boss and the fourth boss are utilized to respectively position and install the valve core intermediate connecting bushing and the valve core upper connecting plate, so that the valve core is convenient and quick to assemble.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a valve cartridge of the present utility model;
in the figure: 1. a valve core lower connecting plate; 11. a first boss; 12. a first through hole; 2. a valve core lower sealing ring; 3. the middle of the valve core is connected with a bushing; 31. a second boss; 32. a second central bore; 33. a third boss; 4. a sealing ring is arranged on the valve core; 5. a connecting plate is arranged on the valve core; 51. a fourth boss; 52. a top surface boss; 6. a screw; 7. an O-shaped sealing ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1 and 2, the present utility model provides the following technical solutions: the soft and hard double-seal valve core of the regulating valve comprises a valve core lower connecting plate 1, wherein the valve core lower connecting plate 1 is sequentially connected with a valve core middle connecting bushing 3 and a valve core upper connecting plate 5, the upper end and the lower end of the valve core middle connecting bushing 3 are respectively provided with a third boss 33 and a second boss 31, the outer wall of the third boss 33 is sleeved with a valve core upper sealing ring 4, the valve core upper sealing ring 4 is clamped between the valve core upper connecting plate 5 and the valve core middle connecting bushing 3, the outer wall of the second boss 31 is sleeved with a valve core lower sealing ring 2, the valve core lower sealing ring 2 is clamped between the valve core lower connecting plate 1 and the valve core middle connecting bushing 3, the valve core lower connecting plate 1, the valve core middle connecting bushing 3 and the valve core upper connecting plate 5 are connected through fasteners, the valve core is sequentially provided with the valve core upper connecting plate 5, the valve core upper sealing ring 4, the valve core middle connecting bushing 3, the valve core lower sealing ring 2 and the valve core lower connecting plate 1 from top to bottom, the second boss 31 and the third boss 33 are used for enabling the mounting grooves for mounting sealing rings to be formed between the valve core lower connecting plate 1 and the valve core middle connecting bushing 3 and between the valve core upper connecting plate 5 and the valve core middle connecting bushing 3, the valve core lower sealing ring 2 and the valve core upper sealing ring 4 are respectively positioned and mounted by the second boss 31 and the third boss 33, and the valve core upper sealing ring 4 and the valve core lower sealing ring 2 which are made of flexible materials are used for enabling the valve core to be sealed through soft and hard surfaces in sequence, so that the sealing performance of the regulating valve is enhanced to achieve the VI level leakage amount in an ANSI standard, the zero level leakage amount can be customized, the valve is applicable to the working conditions of common gas and relatively strict leakage requirements, and the maximum use temperature is 300 ℃.
The upper end center shaping of connecting plate 1 has first boss 11 under the case, first through-hole 12 has been seted up at the center of first boss 11, second centre bore 32 has been seted up at the center of connecting sleeve 3 in the middle of the case, the second centre bore 32 nestification of connecting sleeve 3 in the middle of the case is on first boss 11, first boss 11 is fixed a position the installation of connecting sleeve 3 in the middle of the case, the lower extreme center shaping of connecting plate 5 has fourth boss 51 on the case, fourth boss 51 imbeds in second centre bore 32, second centre bore 32 can fix a position the installation to connecting plate 5 on the case, thereby make the case equipment convenient quick.
The valve core intermediate connection bush 3 is provided with a threaded hole, the valve core upper connection plate 5 and the valve core lower connection plate 1 are provided with through holes, the threaded holes are internally and threadedly connected with screws 6, the screws 6 sequentially penetrate through the valve core upper connection plate 5, the valve core intermediate connection bush 3 and the valve core lower connection plate 1, the lower ends of the screws 6 are connected with nuts, the valve core intermediate connection bush 3 is fixed between the valve core upper connection plate 5 and the valve core lower connection plate 1 through the screws 6 and the nuts, the screws 6 are screwed to press the valve core upper connection plate 5 under the nuts on the valve core intermediate connection bush 3, and the screws of the nuts can press the valve core lower connection plate 1 on the lower end face of the valve core intermediate connection bush 3, so that the valve core assembly is completed.
As shown in fig. 2, O-ring grooves are formed in the inner edges of the second boss 31 and the third boss 33, an O-ring 7 is embedded in the O-ring grooves, and gaps between the lower valve core connecting plate 1 and the end face of the middle valve core connecting bush 3 and gaps between the upper valve core connecting plate 5 and the end face of the middle valve core connecting bush 3 are filled by the O-ring 7, so that the sealing performance of the valve core is improved.
The lower extreme of case upper junction plate 5 has also seted up O type sealing washer groove, and O type sealing washer groove has also been seted up to the upper end of case lower junction plate 1, and O type sealing washer 7 embedding is in O type sealing washer groove, and O type sealing washer 7 all is located the inboard of case lower sealing ring 2 and case upper sealing ring 4, utilizes the O type sealing washer 7 of distributing at the upper and lower terminal surface of case intermediate junction bush 3, and it has two O type sealing washers 7 of inner circle and outer lane to distribute on an terminal surface, further improves the leakproofness between the upper and lower terminal surface of case intermediate junction bush 3 and case upper junction plate 5 and case lower junction plate 1.
The upper end shaping of case upper junction plate 5 has top surface boss 52, has seted up the round hole in the top surface boss 52 and is used for connecting the valve rod, and top surface boss 52 can lead the location to the installation of valve body.
Chamfer angles are formed on the lower end surfaces of the valve core upper sealing ring 4 and the valve core lower sealing ring 2, so that the tightness between the valve core upper sealing ring 4, the valve core lower sealing ring 2 and the inner wall of the valve body is enhanced.
The chamfer is offered to the lower terminal surface of connecting plate 1 under the case, and the chamfer can lead the installation of case, makes the case install more smooth and easy in the valve body, can not take place the jamming phenomenon.
The valve core lower sealing ring 2 and the valve core upper sealing ring 4 are both made of PPL, PPL is a polymer with benzene rings as links, is engineering plastic used for a long time below 400 ℃, has extremely low friction coefficient, good wear resistance and excellent chemical stability, and further improves the service life of the valve core.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a soft or hard double seal valve core of governing valve, includes connecting plate under the case, its characterized in that: the valve core lower connecting plate is sequentially connected with a valve core middle connecting bushing and a valve core upper connecting plate, a third boss and a second boss are respectively formed at the upper end and the lower end of the valve core middle connecting bushing, a valve core upper sealing ring is sleeved on the outer wall of the third boss, the valve core upper sealing ring is clamped between the valve core upper connecting plate and the valve core middle connecting bushing, a valve core lower sealing ring is sleeved on the outer wall of the second boss, the valve core lower sealing ring is clamped between the valve core lower connecting plate and the valve core middle connecting bushing, and the valve core lower connecting plate, the valve core middle connecting bushing and the valve core upper connecting plate are connected through fasteners.
2. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: the valve core is characterized in that a first boss is formed in the center of the upper end of the valve core lower connecting plate, a second center hole is formed in the center of the valve core middle connecting bushing, the second center hole of the valve core middle connecting bushing is nested on the first boss, a fourth boss is formed in the center of the lower end of the valve core upper connecting plate, and the fourth boss is embedded in the second center hole.
3. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: threaded holes are formed in the valve core middle connecting bush, through holes are formed in the valve core upper connecting plate and the valve core lower connecting plate, screws are connected with the threaded holes in a threaded mode, penetrate through the valve core upper connecting plate, the valve core middle connecting bush and the valve core lower connecting plate in sequence, nuts are connected to the lower ends of the screws, and the valve core middle connecting bush is fixed between the valve core upper connecting plate and the valve core lower connecting plate through the screws and the nuts.
4. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: o-shaped sealing ring grooves are formed in the inner edges of the second boss and the third boss, and O-shaped sealing rings are embedded in the O-shaped sealing ring grooves.
5. The soft and hard double seal valve core of the regulating valve according to claim 4, wherein: the lower end of the valve core upper connecting plate is also provided with an O-shaped sealing ring groove, the upper end of the valve core lower connecting plate is also provided with an O-shaped sealing ring groove, the O-shaped sealing ring is embedded in the O-shaped sealing ring groove, and the O-shaped sealing rings are positioned on the inner sides of the valve core lower sealing ring and the valve core upper sealing ring.
6. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: the upper end of the valve core upper connecting plate is provided with a top surface boss in a forming mode, and a round hole is formed in the top surface boss and used for being connected with a valve rod.
7. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: chamfer angles are formed on the lower end surfaces of the upper sealing ring and the lower sealing ring of the valve core.
8. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: and a chamfer is formed on the lower end surface of the valve core lower connecting plate.
9. The soft and hard double seal valve core of the regulating valve according to claim 1, characterized in that: and the lower valve core sealing ring and the upper valve core sealing ring are both made of PPL materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791663.4U CN219366844U (en) | 2023-04-11 | 2023-04-11 | Soft and hard double-seal valve core of regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791663.4U CN219366844U (en) | 2023-04-11 | 2023-04-11 | Soft and hard double-seal valve core of regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366844U true CN219366844U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320791663.4U Active CN219366844U (en) | 2023-04-11 | 2023-04-11 | Soft and hard double-seal valve core of regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366844U (en) |
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2023
- 2023-04-11 CN CN202320791663.4U patent/CN219366844U/en active Active
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