CN205226448U - No spring -loaded's fixed ball valve of soft seal - Google Patents
No spring -loaded's fixed ball valve of soft seal Download PDFInfo
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- CN205226448U CN205226448U CN201521061686.1U CN201521061686U CN205226448U CN 205226448 U CN205226448 U CN 205226448U CN 201521061686 U CN201521061686 U CN 201521061686U CN 205226448 U CN205226448 U CN 205226448U
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Abstract
The utility model discloses a no spring -loaded's fixed ball valve of soft seal, including valve body, spheroid with be fixed with the seat cover of soft disk seat the disk seat back set up the pressure cover of holding its inside top, the outside of pressure cover be formed with the male half coupling, male half coupling and valve body between a clamping position have a graphite annulus, when press set and the valve body when the axial is tight with the graphite ring grip, outer end and the valve body of pressure cover between keep the clearance. The utility model discloses establish the graphite annulus pressing cover back to add, cancellation spring -loaded compares the spring -loaded in the conventional fixed ball valve, and the graphite circle can not become invalid, fine solution the problem that became invalid of spring, simultaneously, the sealed not back of the body hourglass of assurance disk seat that can be better of dual graphite circle. Cancel the spring cavity simultaneously and also reduced the processing cost.
Description
Technical field
The utility model relates to ball valve technical field, particularly relates to a kind of without spring-loaded soft seal fixing ball valve.
Background technique
Fixing ball valve arranges spring behind at valve seat usually, can ensure that the valve seat of ball valve and spheroid can gluing, sealings closely by the compression pretightening force of spring.In addition, at different temperature, the size of ball valve component can change because of expanding with heat and contract with cold, the stuck of valve is caused because of the change of element size in order to prevent, usually also need to arrange spring in the behind of ball seat, the spring of ball valve normally adopts cylindrically coiled spring or belleville spring, is compensated the dimensional changes of valve components by the dilatation of spring, to prevent the stuck of valve.
But after valve uses for a long time, cylindrically coiled spring can progressively lose deformation adjustment ability, when the temperature is changed, when particularly temperature raises, when the element size of valve becomes large, because cylindrically coiled spring loses deformation-compensated ability, the situations such as leakage can be caused to occur.
Model utility content
The purpose of this utility model is the technological deficiency for existing in prior art, and provides a kind of without spring-loaded soft seal fixing ball valve.
The technological scheme adopted for realizing the purpose of this utility model is:
A kind of without spring-loaded soft seal fixing ball valve, comprise valve body, spheroid and be fixed with the cover for seat of soft valve seat, at described valve seat back, the gland it inwardly held is set, the outside of described gland is formed with outer stopper, between described outer stopper and valve body, clamping position has graphite annulus, when gland and valve body are when axially clamping graphite annulus, between the outer end of described gland and valve body, keep gap.
The inner lateral of described gland is formed nested for the afterbody of the described cover for seat bulge loop in it projecting inwardly, is provided with seal ring between described bulge loop inner end and cover for seat.
Described graphite annulus is the contact of incline plane mated with the facade of described outer stopper, and the relative inwardly projecting of outer annular edge of described graphite annulus is protruded.
The cross section of described graphite annulus is that chamfer is trapezoidal.
Described gland is stainless steel.
The material of described seal ring is graphite material, and its cross section is inverted trapezoidal.
Compared with prior art, the beneficial effects of the utility model are:
The utility model after gland after add graphite annulus, cancel spring and load, compare spring in conventional fixing ball valve and load, graphite circle can not lose efficacy, and well solved the problem of spring failure; Meanwhile, dual graphite circle sealing can better ensure that valve seat is not carried on the back leakage.Cancel spring chamber simultaneously and also reduce processing cost.
Accompanying drawing explanation
Figure 1 shows that the structural representation of ball valve of the present utility model;
Figure 2 shows that close-up schematic view.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, of the present utility modelly comprise valve body, spheroid without spring-loaded soft seal fixing ball valve and be fixed with the cover for seat of soft valve seat, the gland 2 it inwardly held is set at described valve seat back, the outside of described gland is formed with outer stopper, between described outer stopper and valve body, clamping position has graphite annulus 3, when gland and valve body are when axially clamping graphite annulus, between the outer end of described gland and valve body, keep gap.
Wherein, " interior " in the utility model refers to that " outward " refers to the direction contrary with " interior " near spheroid side or close side, medial axis.
Gland of the present utility model and cover for seat are sleeved on valve port inside and keep sealing with the internal face of valve port, outer stopper is formed outside described gland, i.e. step, this step is arranged with the graphite annulus with the height uniform thickness of outer stopper accordingly, utilize the compressibility of graphite to provide deformation-compensated, eliminate the setting of spring chamber, lasting deformation-compensated ability can be kept, avoid the stuck of valve components, ensure the normal switch motion of valve.Utilize the gap reserved during clamping simultaneously, for graphite annulus provides the compression limit spacing, improve the Security used.
Described graphite annulus is corresponding contact of incline plane with the facade of described outer stopper, the inclined-plane of the relative inwardly projecting protrusion of outer annular edge of described graphite annulus, the facade of outer stopper forms slope accordingly, preferably, the cross section of described graphite annulus is that chamfer is trapezoidal, employing oblique contact type designs, and can improve the variability amount of graphite annulus further, effectively provide larger compressibility.
Preferably, the inner lateral of described gland is formed nested for the afterbody of the described cover for seat bulge loop in it projecting inwardly, seal ring 4 is provided with between described bulge loop inner end and cover for seat, the material of described seal ring is graphite material, its cross section is inverted trapezoidal, adopt the inverted trapezoidal structure of graphite material, while ensureing sealing effect, still can improve predetermined elastic deformability.
For improving sealing effect, the width of described graphite annulus is less than the length of described step, the width of namely described graphite annulus is less than the length of outer stopper neck cervical part of esophagus, such sealing effect that can improve graphite annulus present position, namely graphite annulus collection provides elastic module and sealability and one, increases the service life.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. one kind without spring-loaded soft seal fixing ball valve, it is characterized in that, comprise valve body, spheroid and be fixed with the cover for seat of soft valve seat, at described valve seat back, the gland it inwardly held is set, the outside of described gland is formed with outer stopper, between described outer stopper and valve body, clamping position has graphite annulus, when gland and valve body are when axially clamping graphite annulus, keeps gap between the outer end of described gland and valve body.
2. as claimed in claim 1 without spring-loaded soft seal fixing ball valve, it is characterized in that, the inner lateral of described gland is formed nested for the afterbody of the described cover for seat bulge loop in it projecting inwardly, is provided with seal ring between described bulge loop inner end and cover for seat.
3. as claimed in claim 1 without spring-loaded soft seal fixing ball valve, it is characterized in that, described graphite annulus is the contact of incline plane mated with the facade of described outer stopper, and the relative inwardly projecting of outer annular edge of described graphite annulus is protruded.
4. as claimed in claim 3 without spring-loaded soft seal fixing ball valve, it is characterized in that, the cross section of described graphite annulus is that chamfer is trapezoidal.
5. as claimed in claim 1 without spring-loaded soft seal fixing ball valve, it is characterized in that, described gland is stainless steel.
6. as claimed in claim 2 without spring-loaded soft seal fixing ball valve, it is characterized in that, the material of described seal ring is graphite material, and its cross section is inverted trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521061686.1U CN205226448U (en) | 2015-12-15 | 2015-12-15 | No spring -loaded's fixed ball valve of soft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521061686.1U CN205226448U (en) | 2015-12-15 | 2015-12-15 | No spring -loaded's fixed ball valve of soft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226448U true CN205226448U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521061686.1U Active CN205226448U (en) | 2015-12-15 | 2015-12-15 | No spring -loaded's fixed ball valve of soft seal |
Country Status (1)
| Country | Link |
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| CN (1) | CN205226448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764173A (en) * | 2019-03-14 | 2019-05-17 | 无锡智能自控工程股份有限公司 | A kind of high-pressure ball valve with redundancy packing seal structure |
-
2015
- 2015-12-15 CN CN201521061686.1U patent/CN205226448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764173A (en) * | 2019-03-14 | 2019-05-17 | 无锡智能自控工程股份有限公司 | A kind of high-pressure ball valve with redundancy packing seal structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |