CN2557771Y - Combined seal rotary cut-off valve - Google Patents
Combined seal rotary cut-off valve Download PDFInfo
- Publication number
- CN2557771Y CN2557771Y CN 02274132 CN02274132U CN2557771Y CN 2557771 Y CN2557771 Y CN 2557771Y CN 02274132 CN02274132 CN 02274132 CN 02274132 U CN02274132 U CN 02274132U CN 2557771 Y CN2557771 Y CN 2557771Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flap
- utility
- rotational shear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model relates to a valve, in particular to a combined seal rotating shear valve, which is composed of a valve body, a valve clack, a valve stem, a feeding case, a stand and a handle. The utility model is characterized in that a gear plate is machined on the edge of the external circle on the right side of the valve clack; the valve clack whose central part is provided with a pressure head, a spring and a sleeve is connected with the lower end of the valve stem; a corrugated pipe and a thin metal seal ring are arranged on the external circle on the left side of the gear plate; an annular slot is processed on a seal surface of the valve clack; a non-metallic seal ring is arranged inside the slot. The utility model is applied to pipes of all pressure levels and a wide temperature range, with a wide range of applications and market prospects.
Description
(1) technical field
The utility model relates to a kind of valve, especially relates to a kind of combination seal, rotational shear valve.
(2) technical background
At present, the valve kind that use in each field of industry is a lot, ball valve is arranged, gate valve, butterfly valve and stopcock etc.The part valve adopts soft sealing structure (nonmetal-nonmetallic material, as pads such as rubber, teflon).This soft seal nonmetallic material wear-resistant, resistance and high temperature resistance property is relatively poor, is easy to generate dielectric leakage after causing valve to use a period of time.Some valve is for overcoming these shortcomings, though adopted the hard sealing structure form, because flowing medium washes away for a long time, wear phenomenon can appear in metallic sealing section, and sealing surface produces the gap, causes flowing medium to leak, and brings problem to production.
(3) summary of the invention
The purpose of this utility model provides a kind of simple in structure, has the rotational shear valve of the hard sealing in three roads with soft seal combined sealing structure and wear automatic-compensation structure.
The utility model is realized with following technological scheme: flap right side or left side outer circular edge are processed with gear disk, the pressure head of packing in the flap center portion, and spring connects with the screw rod bottom behind the sleeve.Bellows and thin metallic packing ring are equipped with in gear disk left side or right side cylindrical place, and the flap sealing surface is processed with a circular groove, and the nonmetal soft seal ring of making is installed in the groove.Media outlet in the valve body is or/and the ingress is equipped with corrosion-resistantly, and the valve seat that anti-abrasive material is made is equipped with tooth bar in the valve body inboard.Be provided with in the valve body inboard one wear-resistant, anti-corrosion layer.Valve body can be made into whole, also can be made into split, by left valve barrel, and middle valve body, right valve barrel forms.It is synthetic also to can be made into left and right valve body.
The utility model compared with prior art has following advantage and good effect:
1, the utility model is at flexible hard sealing surface that is made of bellows and thin metal ring of the bottom of flap gear disk outermost surface welding, metal ring and valve seat form the first road hard sealing structure, the flap sealing surface is driven a circular groove, a nonmetal soft seal ring of making is installed in this groove, forms the second road soft sealing structure.Also remain with the metal flat of certain width in the circular groove both sides, this plane forms two road hard sealing structure and soft sealing structures with valve seat again.Guaranteed the reliability of sealing.Effectively improve the valve seal performance.
2, the tooth bar interior with being fixed on valve body of the gear disk on the flap is meshed, connect with the screw rod that handle control valve rod is done straight reciprocating motion again, under screw rod and tooth bar double action, rely on the resultant motion of its straight line and rotation, with the impurity on the shear pattern release valve body sealing surface, keep the sealing surface cleaning, reduce the degree of wear and the probability of sealing surface, the working life of improving valve.
When 3, the gear disk of the utility model flap connects with valve rod, a spring is arranged between gear disk and valve rod, this spring is pressed on whole flap on the valve seat, makes the wearing and tearing of sealing surface obtain self compensation.Has the self tightening fluid seal structure.Be applicable to the pipeline and the wider temperature range of all pressure ratings, have application fields and market prospects.
(4) description of drawings
Fig. 1 is that the utility model master looks and cuts view.
Fig. 2 is the utility model A-A view.
(5) specific embodiments
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Gasket seal 14 backs are housed by bolton between left valve barrel 10, middle valve body 9, the right valve barrel 5.Be provided with corrosion-resistant, anti abrasion layer 22 in the valve body inboard.Media outlet place in valve body is welded with the valve seat 13 that the wear-resistant metal material is made.Flap 4 center portions that are processed with gear disk pack into pressure head 6, spring 11, sleeve 12 backs connect with valve rod 2 ends.Be welded with tooth bar 15 in the valve body, gear disk on the flap 4 and 15 engagements of the tooth bar on the valve body.Flap 4 side cylindrical place be welded bellows 3 and the Bao Gang seal ring 8 of facing left that cog.Flap 4 sealing surfaces are processed with a circular groove, and the soft seal ring 7 that rubber is made is installed in the groove.Valve body top is equipped with pack into Stem Mut 1, handle 21 of stuffing box 16, filler 17, Gland 18, support 19, positioning plate 20, valve rod 2 and is cooperated by key connecting with Stem Mut 1.
Claims (4)
1, combination seal rotational shear valve, comprise: Stem Mut (1), valve rod (2), valve seat (13), gasket seal (14), stuffing box (16), filler (17), Gland (18), support (19), positioning plate (20), handle (21), it is characterized in that flap (4) right side or left side outer circular edge are processed with gear disk, the pressure head (6) of packing in flap (4) center portion, spring (11), sleeve (12) back connects with screw rod (2) bottom, in gear disk left side or right side cylindrical place bellows (3) and thin metallic packing ring (8) are housed, flap (4) sealing surface is added with a circular groove, and the soft seal ring (7) that nonmetallic material are made is installed in the groove.
2, combination seal rotational shear valve according to claim 1 is characterized in that the media outlet in valve body or/and the valve seat corrosion-resistant, that anti-abrasive material is made (13) is equipped with in the ingress, and tooth bar (15) is housed in the valve body inboard.
3, combination seal rotational shear valve according to claim 1, it is characterized in that described valve body be split-type structural by left valve barrel (10), middle valve body (9) and right valve barrel (5).
4, combination seal rotational shear valve according to claim 1 is characterized in that being provided with in the valve body inboard a wear-resistant anti-corrosion layer (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274132 CN2557771Y (en) | 2002-07-11 | 2002-07-11 | Combined seal rotary cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274132 CN2557771Y (en) | 2002-07-11 | 2002-07-11 | Combined seal rotary cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2557771Y true CN2557771Y (en) | 2003-06-25 |
Family
ID=33738451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02274132 Expired - Fee Related CN2557771Y (en) | 2002-07-11 | 2002-07-11 | Combined seal rotary cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2557771Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343834A (en) * | 2013-08-05 | 2015-02-11 | 株式会社捷太格特 | Shear valve and torque limiter |
| CN110906010A (en) * | 2019-11-19 | 2020-03-24 | 广州市淞滨工程技术有限公司 | Hydraulic opening and closing device with good sealing effect for hydraulic engineering |
-
2002
- 2002-07-11 CN CN 02274132 patent/CN2557771Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343834A (en) * | 2013-08-05 | 2015-02-11 | 株式会社捷太格特 | Shear valve and torque limiter |
| CN110906010A (en) * | 2019-11-19 | 2020-03-24 | 广州市淞滨工程技术有限公司 | Hydraulic opening and closing device with good sealing effect for hydraulic engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |