CN208295268U - A kind of dual-seal rotary cut-off valve - Google Patents
A kind of dual-seal rotary cut-off valve Download PDFInfo
- Publication number
- CN208295268U CN208295268U CN201820811031.9U CN201820811031U CN208295268U CN 208295268 U CN208295268 U CN 208295268U CN 201820811031 U CN201820811031 U CN 201820811031U CN 208295268 U CN208295268 U CN 208295268U
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- valve
- seal groove
- annular seal
- valve seat
- flap
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Abstract
The utility model proposes a kind of dual-seal rotary cut-off valves.Dual-seal rotary cut-off valve includes valve stem nut, valve rod, valve seat, elastic sealing structure is equipped in one of them of the contact surface of flap and valve seat, another is equipped with gasket seal, elastic sealing structure includes the annular seal groove being arranged on corresponding contact surface, ring type seal is provided in annular seal groove, ripple spring is provided between the slot bottom and ring type seal of annular seal groove and between the cell wall and annular seal groove of annular seal groove, the radial outside of the annular seal groove is additionally provided with metallic packing ring, it is corresponding that the soft seal ring that sealing is contacted with metallic packing ring is equipped on another contact surface, gear & rack structure is provided between the flap and the valve seat, it is inadequate to solve shear valve sealing performance in the prior art, the technical issues of fluid media (medium) is revealed.
Description
Technical field
The utility model relates to a kind of dual-seal rotary cut-off valves.
Background technique
Currently, there are many valve type that industrial circle uses, there are ball valve, gate valve, butterfly valve and plug valve etc..Part valve is adopted
With single layer soft sealing structure (nonmetallic, nonmetallic materials, such as rubber, polytetrafluoroethylene (PTFE) gasket).Soft seal is nonmetallic in this
Wear-resistant, the resistant to high temperature performance of material is poor, is only protected by the sealant of single layer, when can cause valve using one section
Between after be easy to produce medium leakage.Some valves are in order to overcome these disadvantages, although using hard sealing structure form, by
It is washed away for a long time in fluid media (medium), still will appear sealing surface and lead to the problem of gap, fluid media (medium) is caused to be revealed.
Summary of the invention
The purpose of this utility model is to provide a kind of dual-seal rotary cut-off valves, to solve shearing in the prior art
The problem of valve sealing performance is inadequate, and fluid media (medium) is revealed.
The dual-seal rotary cut-off valve technical solution of the utility model is achieved in that
A kind of dual-seal rotary cut-off valve, including valve stem nut, valve rod, valve seat, the valve rod are arranged in valve seat, valve
One end of bar is connected with flap, and flap is blocked at the medium inlet of valve seat, and the other end of the valve rod stretches out valve seat, and with seat
Valve stem nut mounted in valve seat upper end is threadedly engaged, and rotating handle is fixed on valve stem nut, in contact of the flap with valve seat
One of them of face is equipped with elastic sealing structure, another is equipped with gasket seal, and elastic sealing structure includes being arranged right
The annular seal groove on contact surface answered is provided with ring type seal, the slot bottom and annular of annular seal groove in annular seal groove
Ripple spring, the annular seal groove are provided between sealing ring and between the cell wall and annular seal groove of annular seal groove
Radial outside be additionally provided with metallic packing ring, it is corresponding be equipped on another contact surface contact with metallic packing ring seal it is soft
Sealing ring is provided with gear & rack structure between the flap and the valve seat.
Further, the annular seal groove is arranged on flap.
Using above-mentioned technical proposal, the utility model has the following beneficial effects: compared with the prior art, the utility model institute
The dual-seal rotary cut-off valve being related to by the way that elastic sealing structure and gasket seal are arranged between flap and valve seat, and leads to
Soft seal ring and metallic packing ring cooperation are crossed, so as to realize double sealing structure, guarantees to have between valve seat and flap good
Good sealing performance.It, can be in the double action of screw rod and rack gear simultaneously by the gear & rack structure between flap and valve seat
Under, by the resultant motion of its straight line and rotation, the impurity on valve body sealing surface is released with shear pattern, reduces the abrasion of sealing surface
Degree.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the embodiment of the dual-seal rotary cut-off valve of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
The embodiments of the present invention: as shown in Figure 1, dual-seal rotary cut-off valve includes valve stem nut 3, valve rod 2, valve
Seat 1, the valve rod 2 are arranged in valve seat 1, and one end of valve rod 2 is connected with flap 4, and flap 4 is blocked in the medium inlet of valve seat 1
Place, the other end of the valve rod 2 stretches out valve seat 1, and is threadedly engaged with the valve stem nut 3 for being mounted in 1 upper end of valve seat is sat, in valve rod spiral shell
It is fixed with rotating handle on mother 3, is equipped with elastic sealing structure in one of them of the contact surface of flap 4 and valve seat 1, another
It is equipped with gasket seal 7, elastic sealing structure includes the annular seal groove being arranged on corresponding contact surface, in annular seal groove
Be provided with ring type seal 5, between the slot bottom and ring type seal 5 of annular seal groove and the cell wall of annular seal groove and annular
Ripple spring 6 is provided between seal groove, the radial outside of the annular seal groove is additionally provided with metallic packing ring 9, corresponding
The soft seal ring 8 that sealing is contacted with metallic packing ring 9 is equipped on another contact surface, between the flap 4 and the valve seat 1
It is provided with gear & rack structure 10.
Preferably, the annular seal groove is arranged on flap 4.
By the way that elastic sealing structure and gasket seal 7 are arranged between flap 4 and valve seat 1, and pass through soft seal ring and gold
Belong to sealing ring cooperation, so as to realize double sealing structure, guarantees that there is good sealing performance between valve seat 1 and flap 4.
It, can be under the double action of screw rod and rack gear, by it simultaneously by the gear & rack structure 10 between flap 4 and valve seat 1
The resultant motion of straight line and rotation releases the impurity on valve body sealing surface with shear pattern, reduces the degree of wear of sealing surface.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (2)
1. a kind of dual-seal rotary cut-off valve, which is characterized in that including valve stem nut, valve rod, valve seat, the valve rod, which is arranged, to exist
In valve seat, one end of valve rod is connected with flap, and flap is blocked at the medium inlet of valve seat, and the other end of the valve rod stretches out valve
Seat, and be threadedly engaged with the valve stem nut for being mounted in valve seat upper end is sat, rotating handle is fixed on valve stem nut, in flap and valve
One of them of the contact surface of seat is equipped with elastic sealing structure, another is equipped with gasket seal, and elastic sealing structure includes
Annular seal groove on corresponding contact surface is set, ring type seal, the slot of annular seal groove are provided in annular seal groove
Ripple spring, the ring are provided between bottom and ring type seal and between the cell wall and annular seal groove of annular seal groove
The radial outside of shape seal groove is additionally provided with metallic packing ring, and corresponding be equipped on another contact surface contacts with metallic packing ring
The soft seal ring of sealing, is provided with gear & rack structure between the flap and the valve seat.
2. dual-seal rotary cut-off valve according to claim 1, it is characterised in that: the annular seal groove is arranged in valve
On valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820811031.9U CN208295268U (en) | 2018-05-29 | 2018-05-29 | A kind of dual-seal rotary cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820811031.9U CN208295268U (en) | 2018-05-29 | 2018-05-29 | A kind of dual-seal rotary cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208295268U true CN208295268U (en) | 2018-12-28 |
Family
ID=64722946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820811031.9U Active CN208295268U (en) | 2018-05-29 | 2018-05-29 | A kind of dual-seal rotary cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208295268U (en) |
-
2018
- 2018-05-29 CN CN201820811031.9U patent/CN208295268U/en active Active
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