CN203857079U - Restrictor valve clack of spherical valve - Google Patents
Restrictor valve clack of spherical valve Download PDFInfo
- Publication number
- CN203857079U CN203857079U CN201420297359.5U CN201420297359U CN203857079U CN 203857079 U CN203857079 U CN 203857079U CN 201420297359 U CN201420297359 U CN 201420297359U CN 203857079 U CN203857079 U CN 203857079U
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- Prior art keywords
- valve
- sealing
- transmission
- friction top
- valve rod
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- Expired - Fee Related
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Abstract
The utility model discloses a restrictor valve clack of a spherical valve. A connecting valve cylinder is arranged in the valve body of the spherical valve; the inner hole of the connecting valve cylinder is communicated with the fluid inlet of the spherical valve; a transmission valve rod is axially mounted in the connecting valve cylinder in a sliding way; the restrictor valve clack comprises a pressing cover and a support seat, which are mounted on the transmission valve rod in a sliding way; the support seat is located on the inner side of the valve cylinder and is detachably fixed to the pressing cover; a first sealing piece is clamped between the support seat and a valve cover clamping seat; the first sealing piece is in seal fit with one end part of the connecting valve cylinder; an overflowing elastic piece is compressed between the support seat and the transmission valve rod; a locking piece is arranged at one end part of the transmission valve rod; the transmission valve rod and the pressing cover are sealed by a second sealing piece; the transmission valve rod can drive the restrictor valve clack to act. The restrictor valve clack can enable the spherical valve to achieve a certain overcurrent protection effect when the spherical valve is opened, meanwhile improves the sealing performance of the spherical valve in a closed state, meets the requirement to be used on a tank container and reduces the probability of fluid leakage.
Description
Technical field
The utility model relates to a kind of overcurrent flap, refers to especially a kind of overcurrent flap of ball valve.
Background technique
Conventional ball valve generally comprises valve body, spool and valve rod at present, spool is sphere-like, on valve body, be provided with and be convenient to entry port and the outflow opening that fluid enters into valve inner, and spool is installed on valve inner and by valve rod driven rotary, thereby entry port and outflow opening are cut off or UNICOM, realize closing motion.There is defect in right this ball valve, relies on the seal ring sealing sealing being installed in valve body between the spool of this ball valve and valve body, once sealing lost efficacy, will affect the normal use of ball valve so.In addition, ball valve Environmental Conditions on tank container is more severe, seal request is Gao Gengyan more, not only require the sealing of ball valve higher, avoid revealing, and need to do further restriction to flow, once the fluid flow in discovery tank container is excessive, need ball valve to close, avoid follow-up flow rate of pipelines excessive, also avoid fluid leakage.And common ball valve can not meet above-mentioned requirements at present, thereby cannot be applied on the tank container of fluid.
Model utility content
Technical problem to be solved in the utility model is: the overcurrent flap that a kind of ball valve is provided; this overcurrent flap can make ball valve have certain over-flow protecting effect in unlatching; sealability while simultaneously having improved ball valve closed condition; meet the usage requirement on tank container, lower the leakage probability of fluid.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of overcurrent flap of ball valve, the fluid approaching side of the valve body of this ball valve is provided with for stretching into the connection valve cylinder of internal tank, this connects the endoporus of valve cylinder and the fluid entry port of ball valve is communicated with, and connects in valve cylinder and endwisely slips transmission valve rod is installed; Described overcurrent flap comprises friction top and the supporting base being slidably mounted on transmission valve rod, described supporting base in connect valve cylinder inner side and and friction top between detachably fixing, between supporting base and valve gap grip slipper, clamping has the first Sealing, this first Sealing and the end fitted seal that is connected valve cylinder; Between described supporting base and transmission valve rod, be compressed with overcurrent elastic component, on the end of this transmission valve rod, be positioned at friction top arranged outside and have locking element, between this transmission valve rod and friction top, by the second Sealing, seal, this transmission valve rod can slide and makes the action of overcurrent flap and be connected valve cylinder fitted seal or unlatching within connecting valve cylinder.
As a kind of preferred scheme, between described friction top and supporting base, be provided with the position structure of being convenient to installation.
As a kind of preferred scheme, described position structure comprises and is arranged at the positioning groove of the ring-type on friction top inner side end or positioning convex or the positioning groove on the adjacent friction top end face of positioning convex, setting and supporting base.
As a kind of preferred scheme, between described friction top and locking element, be provided with Sealing housing, seal housing is installed on transmission valve rod, institute's second sealing member sheathing of telling is on transmission valve rod and be arranged in Sealing housing, uncovered shape is arranged in the endoporus upper-end surface of described friction top, the endoporus upper-end surface fitted seal of the lower end of described the second Sealing and friction top, the inner hole surface of the second Sealing coordinates with transmission valve stem seal.
Adopted after technique scheme, effect of the present utility model is: because the fluid approaching side of ordinary ball valve arranges connection valve cylinder, in this connection valve cylinder, transmission valve rod is set, and overcurrent flap is mounted on transmission valve rod, the first Sealing of overcurrent flap and the second Sealing are this ball valve two outer two seals that provide again, thereby no matter this ball valve still can be sealed at overcurrent protection state in off position, thereby improve sealability, reduce and reveal probability; And while normally working, ball valve is opened, transmission valve stem slides is opened and is promoted overcurrent flap it is separated with the end that is connected valve cylinder, and fluid entry port is communicated with inflow exhaust port; And when the flow velocity of fluid is excessive; fluid produces a pressure to overcurrent flap; thereby force friction top transmission valve stem slides relative to supporting base, such the first Sealing just with the end fitted seal that is connected valve cylinder, thereby ball valve is closed; reach the effect of overcurrent protection; therefore, this overcurrent flap can make ball valve have certain over-flow protecting effect in unlatching, the sealability while simultaneously having improved ball valve closed condition; meet the usage requirement on tank container, lower the leakage probability of fluid.。
Owing to being provided with the position structure of being convenient to installation between described friction top and supporting base, this position structure can be convenient to locate between friction top and supporting base fixing, facilitates the installation of the first Sealing again.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model embodiment's structure sectional view;
In accompanying drawing: 1. connect valve cylinder; 2. friction top; 3. the first Sealing; 4. supporting base; 5. transmission valve rod; 6. the second Sealing; 7. Sealing housing; 8. locking element; 9. position structure.
Embodiment
Below by specific embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of overcurrent flap of ball valve, this ball valve is current conventional structure, it comprises valve body, spool and main valve stem, spool is installed on the inner chamber of valve body, main valve stem is fixedly connected with spool, main valve stem can drive Spool rotating, on valve body, be provided be convenient to that fluid enters fluid entry port and be convenient to the exhaust port of fluid expulsion, and the fluid approaching side of valve body is provided with for stretching into the connection valve cylinder 1 of internal tank, this connects the endoporus of valve cylinder 1 and the fluid entry port of ball valve is communicated with, it is one-body molded with valve body that this connects valve cylinder 1, the sidewall of the fluid approaching side of this valve body can be fixed with tank container, connecting 1 of valve cylinder extend in tank container, fluid in tank container enters in valve body from connecting valve cylinder 1.Connect in valve cylinder 1 and endwisely slip transmission valve rod 5 is installed, this transmission valve rod 5 is driven and is slided by valve rod driving mechanism, and the described flap of crossing is installed on transmission valve rod 5, by transmission valve rod 5, is driven and is opened or close; Described overcurrent flap comprises friction top 2 and the supporting base 4 being slidably mounted on transmission valve rod 5, described supporting base 4 in connect valve cylinder 1 inner side and and friction top 2 between detachably fixing, between supporting base 4 and valve gap grip slipper, clamping has the first Sealing 3, this first Sealing 3 and the end fitted seal that is connected valve cylinder 1; Between described supporting base 4 and transmission valve rod 5, be compressed with overcurrent elastic component, on the end of this transmission valve rod 5, be positioned on the end in friction top 2 outsides and be provided with locking element 8, between this transmission valve rod 5 and friction top 2, by the second Sealing 6, seal, this transmission valve rod 5 can make the action of overcurrent flap and be connected valve cylinder 1 fitted seal or unlatching in the interior slip of connection valve cylinder 1, and described the first Sealing 3 and the second Sealing 6 are seal ring.
Between described friction top 2 and supporting base 4, be provided with the position structure 9 of being convenient to installation, wherein.Described position structure 9 comprises positioning groove or the positioning convex that is arranged at the ring-type on friction top 2 inner side ends, positioning convex or positioning groove on friction top 2 end faces adjacent with supporting base 4 are set, and on the inner side end of friction top 2, be provided with the receiving groove that holds the first Sealing 3, the first Sealing 3 is installed in receiving groove and by supporting base 4 and coordinates and grip, fixedly employing bolt between friction top 2 and supporting base 4 is detachably fixing, the outside of mentioning in the utility model refers to the side that connects valve cylinder 1 outside and fluid contact, in Fig. 1, the upper side that connects valve cylinder 1 is outside, and respective side is inner side.
Between described friction top 2 and locking element 8, be provided with Sealing housing 7, seal housing 7 is installed on transmission valve rod 5, second Sealing 6 of telling is sleeved on transmission valve rod 5 and is arranged in Sealing housing 7, uncovered shape is arranged in the endoporus upper-end surface of described friction top 2, the endoporus upper-end surface fitted seal of the lower end of described the second Sealing 6 and friction top 2, the inner hole surface of the second Sealing 6 and transmission valve rod 5 are sealed and matched.
Friction top 2 and transmission valve rod 5 are metalwork, are provided with being nested with of plastics between the two, are convenient to slide, and avoid hard grind to damage.
Working principle of the present utility model is: this filtration flap is applied on ball valve, when normally closing, between the spool of ball valve and valve body itself sealing, the first Sealing 3 and the sealing being connected between the end of valve cylinder 1, the second Sealing 6 is by the sealing between friction top 2 and transmission valve rod 5, thereby the sealing of whole ball valve is improved greatly, on the tank container of adaptation fluid, use, reduce and reveal probability.In addition; this filtration flap can avoid flow excessive when ball valve open mode, and when fluid flow is excessive, the pressure that fluid produces friction top 2 is excessive; this overcurrent flap is subject to will overcoming the elastic force of overcurrent elastic component after this pressure and closes and connect valve cylinder 1, thereby plays the effect of overcurrent protection.
Claims (4)
1. the overcurrent flap of a ball valve, it is characterized in that: the fluid approaching side of the valve body of this ball valve is provided with for stretching into the connection valve cylinder of internal tank, this connects the endoporus of valve cylinder and the fluid entry port of ball valve is communicated with, and connects in valve cylinder and endwisely slips transmission valve rod is installed; Described overcurrent flap comprises friction top and the supporting base being slidably mounted on transmission valve rod, described supporting base in connect valve cylinder inner side and and friction top between detachably fixing, between supporting base and valve gap grip slipper, clamping has the first Sealing, this first Sealing and the end fitted seal that is connected valve cylinder; Between described supporting base and transmission valve rod, be compressed with overcurrent elastic component, on the end of this transmission valve rod, be positioned at friction top arranged outside and have locking element, between this transmission valve rod and friction top, by the second Sealing, seal, this transmission valve rod can slide and makes the action of overcurrent flap and be connected valve cylinder fitted seal or unlatching within connecting valve cylinder.
2. the overcurrent flap of a kind of ball valve as claimed in claim 1, is characterized in that: between described friction top and supporting base, be provided with the position structure of being convenient to installation.
3. the overcurrent flap of a kind of ball valve as claimed in claim 2, is characterized in that: described position structure comprises and is arranged at the positioning groove of the ring-type on friction top inner side end or positioning convex or the positioning groove on the adjacent friction top end face of positioning convex, setting and supporting base.
4. the overcurrent flap of a kind of ball valve as claimed in claim 3, it is characterized in that: between described friction top and locking element, be provided with Sealing housing, seal housing is installed on transmission valve rod, institute's second sealing member sheathing of telling is on transmission valve rod and be arranged in Sealing housing, uncovered shape is arranged in the endoporus upper-end surface of described friction top, the endoporus upper-end surface fitted seal of the lower end of described the second Sealing and friction top, the inner hole surface of the second Sealing coordinates with transmission valve stem seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297359.5U CN203857079U (en) | 2014-06-05 | 2014-06-05 | Restrictor valve clack of spherical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297359.5U CN203857079U (en) | 2014-06-05 | 2014-06-05 | Restrictor valve clack of spherical valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203857079U true CN203857079U (en) | 2014-10-01 |
Family
ID=51606929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297359.5U Expired - Fee Related CN203857079U (en) | 2014-06-05 | 2014-06-05 | Restrictor valve clack of spherical valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203857079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019247A (en) * | 2014-06-05 | 2014-09-03 | 张家港富瑞特种装备股份有限公司 | Overflow valve clack of ball valve |
| CN104930287A (en) * | 2015-05-22 | 2015-09-23 | 天津市通洁高压泵制造有限公司 | Rotary overflowing device of ultrahigh-pressure pneumatic cleaning gun |
-
2014
- 2014-06-05 CN CN201420297359.5U patent/CN203857079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019247A (en) * | 2014-06-05 | 2014-09-03 | 张家港富瑞特种装备股份有限公司 | Overflow valve clack of ball valve |
| CN104930287A (en) * | 2015-05-22 | 2015-09-23 | 天津市通洁高压泵制造有限公司 | Rotary overflowing device of ultrahigh-pressure pneumatic cleaning gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20200605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |