CN203309324U - Built-in pre-tightening valve rod packing sealing maintenance-free structure - Google Patents
Built-in pre-tightening valve rod packing sealing maintenance-free structure Download PDFInfo
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- CN203309324U CN203309324U CN2013202140888U CN201320214088U CN203309324U CN 203309324 U CN203309324 U CN 203309324U CN 2013202140888 U CN2013202140888 U CN 2013202140888U CN 201320214088 U CN201320214088 U CN 201320214088U CN 203309324 U CN203309324 U CN 203309324U
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- packing
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- valve rod
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- sealing
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Abstract
The utility model provides a built-in pre-tightening valve rod packing sealing maintenance-free structure. The built-in pre-tightening valve rod packing sealing maintenance-free structure comprises a valve rod arranged on the valve body, a pressing cover, a packing ring arranged between the valve rod and the pressing cover, and a fastener, wherein the fastener sequentially penetrates through the pressing cover, the packing ring and the valve body to fixedly connect the pressing cover, the packing ring and the valve body together, a packing cavity is formed in the center of the packing ring, and packing and a packing loading mechanism capable of automatically loading the packing are arranged inside the packing cavity to guarantee the sealing effect of the valve body. The built-in pre-tightening valve rod packing sealing maintenance-free structure is provided with an outside loading sealing structure capable of adjusting the pressing cover, and the loading sealing structure is an automatic loading structure, so that a secondary seal and a true leakage-free fireproof seal are achieved. Through the design of the packing loading mechanism, the packing can be loaded automatically, manual control is saved, the sealing performance is good, and the effective sealing life of the packing is largely prolonged. The built-in pre-tightening valve rod packing sealing maintenance-free structure is stable to operate in the use process, convenient to maintain, and favorable for preventing environmental pollution and promoting environmental protection.
Description
Technical field
The utility model relates to valve field, refers to especially a kind of built-in pretension stem packing closed maintenance free structure.
Background technique
In ball valve, valve rod is actuator, by the rotational motion of screw rod, realize the switching manipulation of valve, because valve rod is to drive valve by rotational motion, motion and friction are just arranged between valve rod and filler, friction between valve rod and filler can cause valve rod and filler that wearing and tearing are arranged, thereby causes the loss of filler.Existing structure is a kind of is that the structure loaded when filler becomes flexible is not set, and another kind is the external Gland of regulating.Filler loading structure when loosening is not set in original structure one, and when current road Sealing damaged, fire-proof packing can not really guarantee close.Therefore envelope and fire prevention do not leak outside, and harmful substance in medium and medium may occur to external leakage, have both wasted mass energy, and the equipment human injury such as easily set off an explosion again, go back serious environment pollution.Another kind of structure is arranged now, external adjustable joint Gland on valve body, when Sealing damages, compress filler by the manual tune Gland and realize sealing, but when unusual fire occurs environment, needing manpower is that its loading difficulty is larger, another this structure also needs to increase in addition connection bracket in the time of need to being with operator, valve rod also will lengthen, and the valve height increases.
The model utility content
The utility model proposes a kind of built-in pretension stem packing closed maintenance free structure, solved sealing effect of the prior art poor, can't realize that filler loads automatically, the problems such as troublesome maintenance.
The technical solution of the utility model is achieved in that
A kind of built-in pretension stem packing closed maintenance free structure, comprise the valve rod be arranged on valve body, gland, be arranged at the packing ring between described valve rod and gland, and fastening piece, wherein, described fastening piece passes described gland, packing ring, valve body successively, and described gland, packing ring, valve body are fixed together;
Center at described packing ring is provided with packing cavity, in described packing cavity, is provided with filler and can, from the filler load maintainer of live-loaded packing, guarantees the sealing effect of described valve body.
As preferred technological scheme, described filler load maintainer is arranged at the bottom of described filler, and when described filler wearing and tearing, described filler load maintainer can realize that filler loads.
As preferred technological scheme, described filler load maintainer is comprised of filler packing ring and filler elastic member, and described filler packing ring is arranged between described filler and filler elastic member, guarantees the sealing effect of described valve body.
As preferred technological scheme, described filler elastic member is butterfly spring.
As preferred technological scheme, between described valve rod and packing ring, also be provided with seal ring, described seal ring is the O RunddichtringO.
As preferred technological scheme, described fastening piece is pin.
As preferred technological scheme, described gland is fixedly connected with by screw with packing ring, and described packing ring is fixedly connected with by screw with described valve body.
Beneficial effect
(1) the utlity model has the external loading sealing configuration of regulating gland, and be automatic loading structure, realized second sealing and real zero leakage fire proof seal;
(2) by the design of filler load maintainer, filler can load automatically, saves manpower and controls, good sealing effect, the effective sealing life-span of greatly having improved filler;
(3) using that material is more economized, more compact structure, is a kind of reliable environmental protection structural design;
(4) this structure in use smooth operation, be convenient to safeguard, be conducive to prevent the pollution of the environment and promote environmental protection.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model: a kind of structural representation of built-in pretension stem packing closed maintenance free structure;
Fig. 2 is the partial enlarged drawing of Q section in Fig. 1;
Wherein: 1-valve body, 2-valve rod, 3-gland, 4-packing ring, 5-fastening piece, 6-packing cavity, 7-filler, 8-filler load maintainer, 9-filler packing ring, 10-filler elastic member, 11-seal ring, 12-screw.
Embodiment
Below will the technological scheme in the utility model embodiment be clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment who obtains, and all belong to the scope of the utility model protection.
Shown in Fig. 1-2, built-in pretension stem packing closed maintenance free structure, comprise the valve rod 2, the gland 3 that are arranged on valve body 1, be arranged at packing ring 4 and fastening piece 5 between valve rod 2 and gland 3.Fastening piece 5 passes gland 3, packing ring 4, valve body 1 successively, and gland 3, packing ring 4, valve body 1 are fixed together.Fastening piece, for to have the parts of fastening effect at present, can be chosen as required, and the fastening piece 5 of choosing in the present embodiment is pin.In the center of packing ring 4, be provided with packing cavity 6, in packing cavity 6, be provided with filler 7 and can, from the filler load maintainer 8 of live-loaded packing 7, guarantee the sealing effect of valve body 1.In the utility model, filler load maintainer 8 is arranged at the bottom of filler, and when filler wore and tore, filler load maintainer 8 can realize that filler loads.
With reference to shown in Figure 2, filler load maintainer 8 is comprised of filler packing ring 9 and filler elastic member 10.Its packing ring is the packing ring on existing market.Elastic member is also the conventional parts that use, and the elastic member in the present embodiment is spring, is specially butterfly spring.Butterfly spring, its intensity is large, realizes that filler can load automatically, saves manpower and controls, good sealing effect.Filler packing ring 9 is arranged between filler 7 and filler elastic member 10, guarantees the sealing effect of valve body 1.
In order further to reach sealing effect, also be provided with seal ring 11 between bottom, valve rod 2 and the packing ring 4 of valve rod 2.Seal ring can be selected according to concrete needs, and the seal ring 11 in the present embodiment is selected the O RunddichtringO.
In the utility model, gland 3 is fixedly connected with by screw 12 with packing ring 4, and packing ring 4 is fixedly connected with by screw 12 with valve body 1, has improved the effective sealing life-span of filler 7; Seal the cocksure while, with material more economize, more compact structure is attractive in appearance.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. built-in pretension stem packing closed maintenance free structure, comprise the valve rod be arranged on valve body, gland, be arranged at the packing ring between described valve rod and gland, and fastening piece, it is characterized in that, described fastening piece passes described gland, packing ring, valve body successively, and described gland, packing ring, valve body are fixed together;
Center at described packing ring is provided with packing cavity, in described packing cavity, is provided with filler and can be from the filler load maintainer of live-loaded packing.
2. a kind of built-in pretension stem packing closed maintenance free structure according to claim 1, it is characterized in that: described filler load maintainer is arranged at the bottom of described filler.
3. a kind of built-in pretension stem packing closed maintenance free structure according to claim 1 and 2, it is characterized in that: described filler load maintainer is comprised of filler packing ring and filler elastic member, and described filler packing ring is arranged between described filler and filler elastic member.
4. a kind of built-in pretension stem packing closed maintenance free structure according to claim 1, is characterized in that: between described valve rod and packing ring, also be provided with seal ring.
5. a kind of built-in pretension stem packing closed maintenance free structure according to claim 1, it is characterized in that: described gland is fixedly connected with packing ring, and described packing ring is fixedly connected with described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202140888U CN203309324U (en) | 2013-04-24 | 2013-04-24 | Built-in pre-tightening valve rod packing sealing maintenance-free structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202140888U CN203309324U (en) | 2013-04-24 | 2013-04-24 | Built-in pre-tightening valve rod packing sealing maintenance-free structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309324U true CN203309324U (en) | 2013-11-27 |
Family
ID=49615536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202140888U Expired - Fee Related CN203309324U (en) | 2013-04-24 | 2013-04-24 | Built-in pre-tightening valve rod packing sealing maintenance-free structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203309324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121416A (en) * | 2013-04-24 | 2014-10-29 | 浙江欧维克阀门有限公司 | Packing sealing maintenance-free structure of built-in pre-tightening valve rod |
-
2013
- 2013-04-24 CN CN2013202140888U patent/CN203309324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121416A (en) * | 2013-04-24 | 2014-10-29 | 浙江欧维克阀门有限公司 | Packing sealing maintenance-free structure of built-in pre-tightening valve rod |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20210424 |