CN204704416U - A kind of membrane valve - Google Patents
A kind of membrane valve Download PDFInfo
- Publication number
- CN204704416U CN204704416U CN201520407431.XU CN201520407431U CN204704416U CN 204704416 U CN204704416 U CN 204704416U CN 201520407431 U CN201520407431 U CN 201520407431U CN 204704416 U CN204704416 U CN 204704416U
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- valve
- diaphragm
- flap
- valve body
- drive shaft
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Abstract
The utility model discloses a kind of membrane valve, include valve body, valve gap, flap, live axle and drive shaft mechanism, valve pocket is provided with in described valve body, convex valve seat is provided with in valve pocket, and valve pocket is separated into first-class chamber and second chamber by this convex valve seat, described valve gap is fixed on valve body, described drive shaft turns lifting is arranged on valve gap, described flap is fixed interlock and is installed on the lower end of live axle, is fixedly clamped and is provided with the first diaphragm relative to the below of flap and the second diaphragm between described valve body and valve gap.The utility model has the advantages that there is two-layer separator chip architecture, thus improve compressive strength and working life.
Description
Technical field
The utility model relates to a kind of valve, specifically refers to a kind of membrane valve.
Background technique
Membrane valve adopts one piece of barrier film made with soft material, body cavity and valve gap inner chamber and driver part is separated, is widely used in every field now, and the fluid resistance of membrane valve is little, can be used for the medium containing hard suspended matter; Due to medium only with valve body and membrane contacts, so without the need to stuffing box, there is not gland leakage problem, to valve stem part corrosion-free may, the wherein fine corrosion resistance of plastic diaphragm valve, is mainly suitable for and chemical field.
Traditional membrane valve, lean on the diaphragm of one deck plastically deformable under the stretching extruding of valve rod, create plastic deformation, realize handling the keying of valve by compressing valve body convex valve seat and leaving convex valve seat, because nonmetal diaphragm defines closed every enclosing to flowing chamber in valve body, achieve zero leakage.Such membrane valve, it is the critical component determining its performance for the diaphragm sealed, and mainly moulds with rubber, fluorine and makes.But this kind of diaphragm nonmetallic material endurance life is low, and compressive strength is low, and working life is short.
Summary of the invention
The purpose of this utility model is the shortcoming and defect existed to overcome prior art, and provides one to have two-layer separator chip architecture, thus improves compressive strength and a kind of membrane valve in working life.
For achieving the above object, the technical solution of the utility model includes valve body, valve gap, flap, live axle and drive shaft mechanism, valve pocket is provided with in described valve body, convex valve seat is provided with in valve pocket, and valve pocket is separated into first-class chamber and second chamber by this convex valve seat, described valve gap is fixed on valve body, described drive shaft turns lifting is arranged on valve gap, described flap fixes the lower end that interlock is installed on live axle, be fixedly clamped between described valve body and valve gap and be provided with the first diaphragm relative to the below of flap and the second diaphragm, described flap lower end surface central authorities are provided with the first inward recess, the upper face center of the first described diaphragm is provided with the first positioning convex ring that scarf is positioned in the first inward recess, the lower surface central authorities of this first diaphragm are provided with the second inward recess, the upper face center of the second described diaphragm is provided with the second positioning convex ring that scarf is positioned in the second inward recess, second positioning convex ring internal fixtion of the second described diaphragm is provided with upper end and is fixed on T-shaped screw on live axle successively through the first diaphragm and flap central authorities linkage.
By this setting, first diaphragm and the second diaphragm are set, drastically increase compressive strength and the working life of diaphragm, simultaneously, first positioning convex ring of the first diaphragm is flush-mounted in the first inward recess, second positioning convex ring of the second diaphragm is flush-mounted in the second positioning convex ring of the first diaphragm, can effectively prevent relative translation between the first diaphragm and the second diaphragm, improve diaphragm seal effect.
Further setting is described drive shaft mechanism is handwheel, and the upper end, center of this handwheel is provided with instruction cover between two parties.
Further setting is that the thickness of described the second diaphragm is less than the first diaphragm thickness.
In sum, the utility model has the advantages that there is two-layer separator chip architecture, thus improve compressive strength and working life.
Below in conjunction with specification drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 the utility model embodiment structural representation.
Embodiment
Below by embodiment, the utility model being specifically described, only for being further described the utility model, the restriction to the utility model protection domain can not being interpreted as.
Embodiment of the present utility model as shown in Figure 1, include valve body 1, valve gap 2, flap 3, live axle 4 and drive shaft mechanism 5, drive shaft mechanism 5 described in the present embodiment is handwheel, and the upper end, center of this handwheel is provided with instruction cover 6 between two parties.
In addition, valve pocket is provided with in valve body 1 described in the present embodiment, convex valve seat 7 is provided with in valve pocket, and valve pocket is separated into first-class chamber 11 and second chamber 12 by this convex valve seat 7, described valve gap 2 is fixed on valve body 1, described live axle 4 rotates lifting and is arranged on valve gap 2, the described fixing interlock of flap 3 is installed on the lower end of live axle 4, be fixedly clamped between described valve body 1 and valve gap 2 first diaphragm 8 and the second diaphragm 9 of the below be provided with relative to flap 3, described flap 3 lower end surface central authorities are provided with the first inward recess 31, the upper face center of the first described diaphragm 8 is provided with the first positioning convex ring 81 that scarf is positioned in the first inward recess 31, the lower surface central authorities of this first diaphragm 8 are provided with the second inward recess 82, the upper face center of the second described diaphragm 9 is provided with the second positioning convex ring 91 that scarf is positioned in the second inward recess 82, second positioning convex ring 91 internal fixtion of the second described diaphragm 9 is provided with upper end and is fixed on T-shaped screw 92 on live axle successively through the first diaphragm and flap central authorities linkage, the thickness of the second diaphragm 9 described in the present embodiment is less than the first diaphragm 8 thickness.
Claims (3)
1. a membrane valve, include valve body, valve gap, flap, live axle and drive shaft mechanism, valve pocket is provided with in described valve body, convex valve seat is provided with in valve pocket, and valve pocket is separated into first-class chamber and second chamber by this convex valve seat, described valve gap is fixed on valve body, described drive shaft turns lifting is arranged on valve gap, described flap fixes the lower end that interlock is installed on live axle, it is characterized in that: be fixedly clamped between described valve body and valve gap and be provided with the first diaphragm relative to the below of flap and the second diaphragm, described flap lower end surface central authorities are provided with the first inward recess, the upper face center of the first described diaphragm is provided with the first positioning convex ring that scarf is positioned in the first inward recess, the lower surface central authorities of this first diaphragm are provided with the second inward recess, the upper face center of the second described diaphragm is provided with the second positioning convex ring that scarf is positioned in the second inward recess, second positioning convex ring internal fixtion of the second described diaphragm is provided with upper end and is fixed on T-shaped screw on live axle successively through the first diaphragm and flap central authorities linkage.
2. a kind of membrane valve according to claim 1, is characterized in that: described drive shaft mechanism is handwheel, and the upper end, center of this handwheel is provided with instruction cover between two parties.
3. a kind of membrane valve according to claim 1, is characterized in that: the thickness of the second described diaphragm is less than the first diaphragm thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407431.XU CN204704416U (en) | 2015-06-12 | 2015-06-12 | A kind of membrane valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407431.XU CN204704416U (en) | 2015-06-12 | 2015-06-12 | A kind of membrane valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204704416U true CN204704416U (en) | 2015-10-14 |
Family
ID=54284035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520407431.XU Active CN204704416U (en) | 2015-06-12 | 2015-06-12 | A kind of membrane valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204704416U (en) |
-
2015
- 2015-06-12 CN CN201520407431.XU patent/CN204704416U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |