CN207178733U - A kind of abrasion-resistant cut-off valve valve flap structure - Google Patents
A kind of abrasion-resistant cut-off valve valve flap structure Download PDFInfo
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- CN207178733U CN207178733U CN201721233009.2U CN201721233009U CN207178733U CN 207178733 U CN207178733 U CN 207178733U CN 201721233009 U CN201721233009 U CN 201721233009U CN 207178733 U CN207178733 U CN 207178733U
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- valve
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- connector
- abrasion
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Abstract
A kind of abrasion-resistant cut-off valve valve flap structure.Mainly solve existing stop valve clack and be easily washed damage, poor sealing performance, and the problem of replacing not easy to remove.It is characterized in that：The stem bottom center is provided with center connecting hole；The flap integrally uses stellite, and the flap center is provided with central through hole corresponding with center connecting hole, and the central through hole is in conical structure close to lower end；The connector upper end is connected through central through hole and center connecting hole screw thread, the connector lower end in cone, and with the spacing cooperation in central through hole lower end.It the advantage is that 1, flap integrally uses stellite, not only hardness is high, anti-wear performance is good for stellite, and thermal coefficient of expansion is low, and stuck, good seal performance is not easy under worst hot case；2nd, flap is connected on valve rod by connector, and connector one end is connected with threaded stem, and the other end is not only simple in structure by conical structure and the spacing fixation of flap, and convenient disassembly.
Description
Technical field
Stop valve clack structure is the utility model is related to, more particularly to a kind of abrasion-resistant cut-off valve valve flap structure.
Background technology
Coal chemical industry refers to using coal as raw material, coal is converted into gas, liquid and solid fuel and chemistry through chemical process
The process of product.
Stop valve is a kind of valve commonly used in coal chemical industry pipeline, and caused medium is high temperature mostly in coal chemical industry
Particulate matter, easily to flap carry out erosion failure, cause sealing property bad, and existing flap abrasion after it is not easy to remove more
Change.
Utility model content
In order to overcome the shortcomings of background technology, the utility model provides a kind of abrasion-resistant cut-off valve valve flap structure, mainly solved
Existing stop valve clack is easily washed damage, poor sealing performance, and the problem of replacing not easy to remove.
Technical scheme used by the utility model：A kind of abrasion-resistant cut-off valve valve flap structure, including valve rod, flap, connection
Part；The stem bottom center is provided with center connecting hole；The flap integrally uses stellite, and the flap center is provided with
Central through hole corresponding with center connecting hole, and the central through hole is in conical structure close to lower end；The connector upper end
Be connected through central through hole and center connecting hole screw thread, the connector lower end in cone, and with central through hole lower end
Spacing cooperation.
The stem bottom is provided with locating slot, and the flap upper surface is provided with positioning boss, the positioning boss and positioning
Groove corresponding matching.
The valve rod side wall is provided with the sidewise hole for leading to center connecting hole, and connector can be withstood by being provided with the sidewise hole
Holding screw.
The connector bottom is at least provided with 2 fabrication holes.
The flap outer ring is provided with tapered primary sealing area and the secondary sealing area in cylinder.
The beneficial effects of the utility model are：
1st, flap integrally uses stellite, and not only hardness is high, anti-wear performance is good for stellite, and thermal expansion system
Number is low, and stuck, good seal performance is not easy under worst hot case；
2nd, flap is connected on valve rod by connector, and connector one end is connected with threaded stem, and the other end passes through circular cone
Shape structure and the spacing fixation of flap, are not only simple in structure, and convenient disassembly.
Brief description of the drawings
Fig. 1 is the utility model embodiment structural representation.
1- valve rods in figure, 11- centers connecting hole, 12- locating slots, 13- sidewise holes, 2- flaps, 21- central through holes, 22- are fixed
Position boss, 23- primary sealing areas, 24- secondary sealing areas, 3- connectors, 31- fabrication holes, 4- holding screws.
Embodiment
The utility model embodiment is described further below in conjunction with the accompanying drawings：
As illustrated, a kind of abrasion-resistant cut-off valve valve flap structure, including valve rod 1, flap 2, connector 3, the flap 2 pass through
Connector 3 is fixedly mounted on valve rod 1.
Wherein, the flap 2 is overall is made of stellite, and not only hardness is high, anti-wear performance is good for stellite,
And thermal coefficient of expansion is low, stuck, good seal performance is not easy under worst hot case, suitable for the bad working environments of coal chemical industry.
The bottom centre of valve rod 1 is provided with center connecting hole 11；The flap 2 is overall to use stellite, the valve
The center of valve 2 is provided with central through hole 21 corresponding with center connecting hole 11, and the central through hole 21 is tied close to lower end in cone
Structure；The upper end of connector 3 is connected through central through hole 21 and the screw thread of center connecting hole 11, and the lower end of connector 3 is in
Cone, and with the spacing cooperation in the lower end of central through hole 21.
During installation, directly it is threadedly coupled by the head of connector 3 with center connecting hole 11, the conical structure meeting of its afterbody
Flap 2 is tensed upwards, so as to fixed flap 2, is not only simple in structure, and convenient disassembly.
As illustrated, the bottom of valve rod 1 is provided with locating slot 12, the upper surface of flap 2 is provided with positioning boss 22, described
Positioning boss 22 and the corresponding matching of locating slot 12.When installing flap 2, first pass through locating slot 12 and matched somebody with somebody with positioning boss 22
Close, it is not only easier for installation, and also fixed rear stability is more preferable.
As illustrated, the side wall of valve rod 1 is provided with the sidewise hole 13 for leading to center connecting hole 11, set in the sidewise hole 13
The holding screw 4 of connector can be withstood by having, by holding screw 4 can further fixedly connected part 3, avoiding medium from washing away makes
Thread looseness rotates, and ensures connective stability.
As illustrated, the bottom of connector 3 is at least provided with 2 fabrication holes 31, it is convenient to connector 3 by fabrication hole 31
Carry out rotation process, easy disassembly.
As illustrated, the outer ring of flap 2 is provided with tapered primary sealing area 23 and the second sealing in cylinder
Face 24, when valve closes, secondary sealing area 24 can be introduced into valve seat endoporus, realize that first layer seals with valve seat endoporus inwall, so
Flap continues to decline afterwards, and primary sealing area 23 seals with valve seat taper-face contact, realizes that the second layer seals.Pass through double-layer seal knot
Structure, the reliability of sealing is further ensured, improve sealing property.
Embodiment is not construed as the limitation to utility model, but it is any be based on spiritual improvements introduced of the present utility model,
All should be within the scope of protection of the utility model.
Claims (5)
1. a kind of abrasion-resistant cut-off valve valve flap structure, including valve rod（1）, flap（2）, connector（3）；It is characterized in that：The valve
Bar（1）Bottom centre is provided with center connecting hole（11）；
The flap（2）It is overall to use stellite, the flap（2）Center is provided with and center connecting hole（11）In corresponding
Heart through hole（21）, and the central through hole（21）It is in conical structure close to lower end；The connector（3）Upper end leads to through center
Hole（21）With center connecting hole（11）Screw thread is connected, the connector（3）Lower end is in cone, and and central through hole（21）
The spacing cooperation in lower end.
2. abrasion-resistant cut-off valve valve flap structure according to claim 1, it is characterised in that：The valve rod（1）Bottom is provided with fixed
Position groove（12）, the flap（2）Upper surface is provided with positioning boss（22）, the positioning boss（22）With locating slot（12）It is corresponding to match somebody with somebody
Close.
3. abrasion-resistant cut-off valve valve flap structure according to claim 1, it is characterised in that：The valve rod（1）Side wall is provided with logical
To center connecting hole（11）Sidewise hole（13）, the sidewise hole（13）It is interior to be provided with the holding screw that withstand connector（4）.
4. abrasion-resistant cut-off valve valve flap structure according to claim 1, it is characterised in that：The connector（3）Bottom is at least
Provided with 2 fabrication holes（31）.
5. abrasion-resistant cut-off valve valve flap structure according to claim 1, it is characterised in that：The flap（2）Outer ring is provided with
The primary sealing area of taper（23）And the secondary sealing area in cylinder（24）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233009.2U CN207178733U (en) | 2017-09-25 | 2017-09-25 | A kind of abrasion-resistant cut-off valve valve flap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233009.2U CN207178733U (en) | 2017-09-25 | 2017-09-25 | A kind of abrasion-resistant cut-off valve valve flap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178733U true CN207178733U (en) | 2018-04-03 |
Family
ID=61749305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721233009.2U Active CN207178733U (en) | 2017-09-25 | 2017-09-25 | A kind of abrasion-resistant cut-off valve valve flap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178733U (en) |
-
2017
- 2017-09-25 CN CN201721233009.2U patent/CN207178733U/en active Active
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