CN204922057U - Pneumatic knife gate of gas sealed - Google Patents
Pneumatic knife gate of gas sealed Download PDFInfo
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- CN204922057U CN204922057U CN201520648394.1U CN201520648394U CN204922057U CN 204922057 U CN204922057 U CN 204922057U CN 201520648394 U CN201520648394 U CN 201520648394U CN 204922057 U CN204922057 U CN 204922057U
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Abstract
The utility model discloses a pneumatic knife gate of gas sealed, including valve body, valve gap and craspedodrome journey cylinder, be equipped with the disk seat in the valve body, be equipped with the cavity in the disk seat, be equipped with the cast recess on the disk seat inside wall of cavity one side, install the airbag in the cast recess, the airbag includes main circle body and inflation inlet, the inflation inlet reveals outside the valve body, the cylinder pole of craspedodrome journey cylinder is connected with the flashboard, and the flashboard inserts in the inside cavity of disk seat, be equipped with valve switch indicator scale on the valve gap. Compared with the prior art, the utility model the advantage be: the utility model discloses a pneumatic sword valve floodgate structure is the ono -rising -stem valve, and the flashboard seals in the cavity of disk seat, has walked around the packing seal of flashboard, the thorough outer hourglass phenomenon of having stopped flashboard filler structure.
Description
Technical field
The utility model relates to knife gate valve, particularly relates to a kind of hermetic seal type pneumatic knife gate valve.
Background technique
At present, the hard sealing gate valve used in engineering, because flashboard is a thin flat plate, and is not complete forced sealing, is therefore difficult to realize tight sealing effect.Especially be arranged on gas powder medium pipeline, the imprecision of gate valve, will leak air Lou powder phenomenon, and through after a period of time, gas powder medium constantly washes away sealing surface, damage flashboard that will be serious and valve seat, the leakage of aggravation valve.Common flexible sealing valve cannot meet onsite application operating mode under coal dust and high-temperature condition.
In order to normal use, valve in the short period, must be changed valve, which adds the user cost of valve, and makes troubles for matched host machine equipment.
Model utility content
The utility model is to solve above-mentioned deficiency, provides a kind of hermetic seal type pneumatic knife gate valve.
Above-mentioned purpose of the present utility model is realized by following technological scheme: a kind of hermetic seal type pneumatic knife gate valve, comprise valve body, valve gap and straight journey cylinder, valve seat is provided with in described valve body, cavity is provided with in valve seat, the valve seat madial wall of described cavity side is provided with cast groove, in cast groove, air bag is installed, described air bag comprises main circle body and inflation inlet, described inflation inlet is exposed to outside valve body, the cylinder column of described straight journey cylinder is connected with flashboard, and flashboard inserts in the cavity of valve seat inside; Described valve gap is provided with valve switch indicator scale.
The cross section of described air bag is square.
The utility model advantage is compared with prior art: pneumatic knife valve brake structure of the present utility model is ono-rising-stem valve, and ram seal, in the cavity of valve seat, has walked around the packing seal of flashboard, has stopped the phenomenon that leaks outside of flashboard filling-material structure thoroughly.
Accompanying drawing explanation
Fig. 1 is surface structure schematic diagram of the present utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the schematic diagram of flashboard opening state in the utility model.
Fig. 4 is the schematic diagram of flashboard closed condition in the utility model.
Fig. 5 is the structural representation of air bag in the utility model.
Fig. 6 is the sectional drawing of the middle horizontal center line of Fig. 5.
Fig. 7 is the cross sectional representation of air bag unaerated state in the utility model.
Fig. 8 is the cross sectional representation of air bag inflated condition in the utility model.
Fig. 9 is the sealed structural representation of common gate valve base.
Figure 10 is the schematic diagram of common gate valve base seal leakage state.
The sealed structural representation of Figure 11 pneumatic knife gate valve seat of the present utility model.
The sealing effect schematic diagram of Figure 12 pneumatic knife gate valve seat of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figures 1 to 6, a kind of hermetic seal type pneumatic knife gate valve, comprise valve body 1, valve gap 2 and straight journey cylinder 3, valve seat 4 is provided with in described valve body 1, cavity 5 is provided with in valve seat 4, valve seat 4 madial wall of described cavity 5 side is provided with cast groove 6, air bag 7 is installed in cast groove 6, described air bag 7 comprises main circle body 7-1 and inflation inlet 7-2, described inflation inlet 7-2 is exposed to outside valve body 1, the cylinder column 3-1 of described straight journey cylinder 3 is connected with flashboard 8, and flashboard 8 inserts in the cavity 5 of valve seat 4 inside; Described valve gap 2 is provided with valve switch indicator scale 9.
As shown in Figure 7, Figure 8, the cross section of described air bag 7 is square.
The main feature of pneumatic knife gate valve of the present utility model is exactly its inflation soft sealing structure, and namely valve seat 4 madial wall of described cavity 5 side is provided with cast groove 6, is provided with air bag 7, is provided with air bag 7 in air bag 7 in cast groove 6.It thoroughly solves the phenomenon of leaking in medium.
Shown in Fig. 9 is the sealing configuration of common gate valve base, and because ram seal puts in place, the mainly positioning table location of outlet end, can not give the sealing force that flashboard is enough, therefore, cause seal leakage to be unavoidable, as shown in Figure 10.
Shown in Figure 11 is the sealing configuration of pneumatic knife gate valve seat of the present utility model, air bag is embedded on the inwall of valve base cavity body side, after pressure air is charged into air bag, air bag will expand, be close on flashboard, make seal form become soft seal, reach the sealing effect of 100%, as shown in figure 12.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. a hermetic seal type pneumatic knife gate valve, it is characterized in that: comprise valve body, valve gap and straight journey cylinder, valve seat is provided with in described valve body, be provided with cavity in valve seat, the valve seat madial wall of described cavity side is provided with cast groove, is provided with air bag in cast groove, described air bag comprises main circle body and inflation inlet, described inflation inlet is exposed to outside valve body, and the cylinder column of described straight journey cylinder is connected with flashboard, and flashboard inserts in the cavity of valve seat inside; Described valve gap is provided with valve switch indicator scale.
2. a kind of hermetic seal type pneumatic knife gate valve according to claim 1, is characterized in that: the cross section of described air bag is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648394.1U CN204922057U (en) | 2015-08-26 | 2015-08-26 | Pneumatic knife gate of gas sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648394.1U CN204922057U (en) | 2015-08-26 | 2015-08-26 | Pneumatic knife gate of gas sealed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204922057U true CN204922057U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520648394.1U Active CN204922057U (en) | 2015-08-26 | 2015-08-26 | Pneumatic knife gate of gas sealed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204922057U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481832A (en) * | 2015-08-26 | 2017-03-08 | 上海妙佳流体控制技术有限公司 | A kind of pneumatic knife gate valve of hermetic seal type |
| CN108413061A (en) * | 2018-02-24 | 2018-08-17 | 江苏亿阀股份有限公司 | A kind of inflation valve seat |
| CN112303262A (en) * | 2020-11-09 | 2021-02-02 | 芜湖新兴铸管有限责任公司 | Novel sealing form of gate valve |
-
2015
- 2015-08-26 CN CN201520648394.1U patent/CN204922057U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481832A (en) * | 2015-08-26 | 2017-03-08 | 上海妙佳流体控制技术有限公司 | A kind of pneumatic knife gate valve of hermetic seal type |
| CN108413061A (en) * | 2018-02-24 | 2018-08-17 | 江苏亿阀股份有限公司 | A kind of inflation valve seat |
| CN112303262A (en) * | 2020-11-09 | 2021-02-02 | 芜湖新兴铸管有限责任公司 | Novel sealing form of gate valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |