CN212028615U - Hard sealing ball rotating valve - Google Patents
Hard sealing ball rotating valve Download PDFInfo
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- CN212028615U CN212028615U CN202020597205.3U CN202020597205U CN212028615U CN 212028615 U CN212028615 U CN 212028615U CN 202020597205 U CN202020597205 U CN 202020597205U CN 212028615 U CN212028615 U CN 212028615U
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- main sealing
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Abstract
The utility model discloses a hard seal ball valve that revolves solves sealed face and uses the problem that the clearance can appear leaking for a long time. The valve core and the valve seat are respectively arranged in the valve body, a flow channel is arranged in the valve body, the valve seat comprises a main sealing element in the shape of a conical disc, the outer edge of the main sealing element is abutted against the inside of the valve body, the inner edge of the main sealing element is in sealing fit with the valve core, and the main sealing element is made of spring steel; and a pressing ring is arranged outside the valve seat, and is installed at the position of a flow passage opening of the valve body in a threaded manner and is abutted against the inner edge of the main sealing element. When the sealing surface generates a leakage gap due to abrasion, the main sealing element can automatically compensate the leakage gap, and effective long-term sealing is realized.
Description
Technical Field
The utility model relates to a spin valve field specifically is a hard sealed spin valve.
Background
The rotary ball valve has the functions and advantages of a butterfly valve, a half-ball valve, a gate valve and a stop valve, and has the powerful functions and advantages which are completely distinctive. Small volume, light weight, small torque, convenient transportation, installation, maintenance and repair and reliable operation. However, the requirement for the sealing performance of the valve gradually increases, and the sealing surface of the hard seal rotary ball valve still has a leakage gap after long-time operation, so that the long-term good sealing performance of the valve cannot be ensured.
Disclosure of Invention
The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a hard seal ball valve solves the problem that the sealed face uses for a long time and can appear the leakage clearance.
The technical scheme of the utility model: the valve core and the valve seat are respectively arranged in the valve body, a flow channel is arranged in the valve body, the valve seat comprises a main sealing element in the shape of a conical disc, the outer edge of the main sealing element is abutted against the inside of the valve body, the inner edge of the main sealing element is in sealing fit with the valve core, and the main sealing element is made of spring steel; and a pressing ring is arranged outside the valve seat, and is installed at the position of a flow passage opening of the valve body in a threaded manner and is abutted against the inner edge of the main sealing element.
By adopting the technical scheme, the principle of the disc spring is utilized, static or dynamic loads acting along the axial direction are borne at the inner edge and the outer edge, deformation is generated after the static or dynamic loads are compressed, the static or dynamic loads are used as live loads in the form of stored energy and are automatically converted into additional compression loads in the radial direction required by sealing when necessary, and therefore, the main sealing element can form sealing fit with the valve core; when the sealing surface generates a leakage gap due to abrasion, the main sealing element can automatically compensate the leakage gap, and effective long-term sealing is realized.
The utility model discloses a further setting: the outer side of the main sealing element is sleeved with a radial spring which is matched with the main sealing element in an abutting mode.
With the above further arrangement, the radial spring exerts an elastic force in the inward radial direction, and the main seal member further ensures the tightness of the seal.
The utility model discloses a further setting again: the radial spring is an annular inclined coil spring.
With the above still further arrangement, when compressed, each coil of the canted coil spring will deform independently, and the entire spring will react no matter which part of the coil deforms, thereby achieving consistent load at each contact point, with uniform stress facilitating consistent sealing.
The utility model discloses a still further set up: install the backing ring between the outer fringe of main seal spare and the valve body, the outer fringe of main seal spare supports and leans on the backing ring, in the backing ring extends its axle center direction and stretches into the runner, but backing ring and valve body inner wall sliding fit.
By adopting the above further arrangement, the pressure of the positive medium in the flow channel is applied to the backing ring and can act on the main sealing element, so that the main sealing element has a force towards the medium flowing direction, and the sealing effect of the main sealing element is further enhanced.
The utility model discloses a still further set up: the minimum inner diameter of the inner edge of the main sealing element is smaller than the inner diameter of the pressing ring.
By adopting the above further arrangement, the inner edge of the main sealing element is exposed in the flow channel, and the inner edge of the main sealing element is extruded by reverse medium pressure, so that the main sealing element has the force in the direction opposite to the medium flow, and the main sealing element and the valve core are sealed more tightly.
The utility model discloses a still further set up: the main seal has at least one, and two or more main seals are mounted in a stacked manner.
By adopting the above further arrangement, the number of the main sealing elements can be selected according to the pressure of the medium, so that the practical range of the valve is wider.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
the valve comprises a valve body 1, a valve core 2, a valve seat 3, a flow channel 11, a main sealing element 31, a pressing ring 4, a radial spring 32 and a backing ring 33.
Detailed Description
As shown in fig. 1-2, the hard seal rotary ball valve includes a valve body 1, a valve core 2 and a valve seat 3, the valve core 2 and the valve seat 3 are respectively installed in the valve body 1, a flow passage 11 is provided in the valve body 1, the valve seat 3 includes a main sealing member 31 having a conical disk shape, an outer edge of the main sealing member 31 abuts against the inside of the valve body 1, an inner edge of the main sealing member 31 forms a sealing fit with the valve core 2, and the main sealing member 31 is made of spring steel. The primary seal 31 has a resilient, resilient compensation capability for the sealing surface. The pressing ring 4 is installed outside the valve seat 3, the pressing ring 4 is installed at the 11 mouths of the flow channel of the valve body 1 in a threaded mode and abuts against the inner edge of the main sealing element 31, and the pressing degree of the main sealing element can be adjusted by the pressing ring 4 so as to match the corresponding appropriate torque and the sealing degree.
The radial spring 32 is sleeved outside the main seal 31 and is matched with the main seal 31 in an abutting mode, and the radial spring 32 is an annular inclined ring spring. The radial spring 32 is biased radially inward and is biased toward the main seal 31 to achieve a good seal.
In order to ensure the bidirectional sealing capability of the rotary ball valve, when a medium flows in the forward direction, because a backing ring 33 is arranged between the outer edge of the main sealing element 31 and the valve body 1, the outer edge of the main sealing element 31 is abutted against the backing ring 33, the backing ring 33 extends towards the axis direction and extends into the flow channel 11, and the backing ring 33 can be in sliding fit with the inner wall of the valve body 1, the forward medium pressure exerts force on the backing ring 33 to act on the main sealing element 31, even the backing ring 33 can slide, and the main sealing element 31 is stressed to ensure that the sealing is tighter. When media reversely flow, the minimum inner diameter of the inner edge of the main sealing element 31 is smaller than the inner diameter of the pressing ring 4, that is, the inner edge of the main sealing element 31 is exposed in the flow channel 11, so that the inner edge of the main sealing element 31 is pressed by reverse media pressure, the main sealing element 31 has a force in the direction opposite to the flow direction of the media, and the main sealing element 31 and the valve core 2 are sealed more tightly. Therefore, the pressure of the bidirectional medium can be borne, and the sealing performance is good.
The main sealing member 31 has at least one, and more than two main sealing members 31 are installed in a stacked manner, so that the number of the main sealing members 31 can be selected according to the pressure of the medium, and the practical range of the valve is wider.
Claims (6)
1. The utility model provides a hard sealed ball-spinning valve, is including valve body, case and disk seat are installed respectively in the valve body, have the runner in the valve body, its characterized in that: the valve seat comprises a main sealing element in the shape of a conical disc, the outer edge of the main sealing element abuts against the inside of the valve body, the inner edge of the main sealing element is in sealing fit with the valve core, and the main sealing element is made of spring steel; and a pressing ring is arranged outside the valve seat, and is installed at the position of a flow passage opening of the valve body in a threaded manner and is abutted against the inner edge of the main sealing element.
2. The hard sealing rotary ball valve of claim 1, wherein: and a radial spring matched with the main sealing element in an abutting mode is sleeved on the outer side of the main sealing element.
3. The hard sealing rotary ball valve of claim 2, wherein: the radial spring is an annular inclined coil spring.
4. The hard seal rotary ball valve as claimed in claim 1 or 3, wherein: install the backing ring between the outer fringe of main seal spare and the valve body, the outer fringe of main seal spare supports and leans on the backing ring, the backing ring extends and stretches into in the runner to its axle center direction, but backing ring and valve body inner wall sliding fit.
5. The hard seal rotary ball valve as claimed in claim 1 or 3, wherein: the minimum inner diameter of the inner edge of the main sealing element is smaller than the inner diameter of the pressing ring.
6. The hard seal rotary ball valve as claimed in claim 1 or 3, wherein: the main seal has at least one, and more than two main seals are installed in a stacked manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020597205.3U CN212028615U (en) | 2020-04-20 | 2020-04-20 | Hard sealing ball rotating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020597205.3U CN212028615U (en) | 2020-04-20 | 2020-04-20 | Hard sealing ball rotating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212028615U true CN212028615U (en) | 2020-11-27 |
Family
ID=73494617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020597205.3U Active CN212028615U (en) | 2020-04-20 | 2020-04-20 | Hard sealing ball rotating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212028615U (en) |
-
2020
- 2020-04-20 CN CN202020597205.3U patent/CN212028615U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |