CN201705967U - High-temperature corrosion-resistant anti-dust gate valve - Google Patents
High-temperature corrosion-resistant anti-dust gate valve Download PDFInfo
- Publication number
- CN201705967U CN201705967U CN2010202010715U CN201020201071U CN201705967U CN 201705967 U CN201705967 U CN 201705967U CN 2010202010715 U CN2010202010715 U CN 2010202010715U CN 201020201071 U CN201020201071 U CN 201020201071U CN 201705967 U CN201705967 U CN 201705967U
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- CN
- China
- Prior art keywords
- dust
- gate valve
- valve
- valve rod
- resistant
- 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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Abstract
The utility model relates to a high-temperature corrosion-resistant anti-dust gate valve. An anti-dust shield is mounted in the exposed position of a valve rod which is arranged above a hand wheel; and hard alloy layer is sprayed and welded on the front sealed surface and the rear sealed surface of a rigid gate valve, and the entire sealed surface adopts plane surface. The high-temperature corrosion-resistant anti-dust gate valve can prevent dust and foreign substances adhering on the surface of the valve rod and corroding threads and fillings, fully enhance scour-resistant and corrosion-resistant property of the entire gate valve, greatly improve wear-resistant and anti-scrape property of the sealed surface, and particularly has a good scouring effect on some small granular media, so as to prolong service life of the gate valve and enhance flexibility of a switch.
Description
Technical field
The utility model relates to the gate valve field.
Background technique
Present various high-temperature flue gas, catalyst granules, the used gate valve of former wet goods medium mainly are made up of valve body, flashboard, valve rod, valve gap, handwheel.Its deficiency is: very fast and high temperature easily causes flashboard, valve rod distortion to medium to the erosion corrosion of valve body, flashboard in course of conveying, and the working life of general gate valve is all shorter.
The model utility content
The purpose of this utility model is exactly at the above-mentioned deficiency of existing gate valve, and a kind of high-temperature corrosion-resistance gate valve that prevents dust is provided.
The utility model gate valve mainly is made of valve body, flashboard, valve rod, valve gap, handwheel, dust-proof cover is installed being positioned at valve rod above the handwheel position that leaks outside, dust-proof cover is made of the Stainless Steel Tube of an end closure, and dust-proof cover is installed on the valve rod support, covers on the position that leaks outside at valve rod top; At the valve rod of valve rod support and the valve gap position that leaks outside the tubulose dust-proof cover is installed.
Built-up welding has hard alloy layer on the preceding sealing surface of flashboard, and also built-up welding has hard alloy layer on the sealing surface of back, and sealing surface is designed to whole plane, the also surfacing hard alloy layer in the lower end of flashboard.
The utility model has the advantages that:
1, design has a dust-proof cover on valve rod, preventing dust impurity attached to stem surface corrosion screw thread and filler, thus the flexibility that has prolonged working life and switch.
2, pile-up welding hard alloy layer on flashboard medium surface of contact, the also surfacing hard alloy layer in the lower end of flashboard.Thereby improve the anti-corrosion resistance that washes away of whole flashboard comprehensively.Can improve the wear-resistant antifraying property of medium surface of contact greatly.Especially at some short grained media, its abrasion resistance is fabulous.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is a flashboard structure sectional structure schematic representation.
Accompanying drawing 3 is an accompanying drawing 2A-A sectional structure schematic representation.
Embodiment
As shown in the figure; The utility model mainly is made of valve body 1, flashboard (rigidity flashboard) 2, valve rod 3, valve gap 4, handwheel, dust-proof cover 5 is installed being positioned at valve rod 3 above the handwheel position that leaks outside, dust-proof cover 5 is made of the Stainless Steel Tube of an end closure, dust-proof cover 5 is installed on the valve rod support 8, covers on the position that leaks outside at valve rod 3 tops; At the valve rod of valve rod support 8 and valve gap 4 position that leaks outside tubulose dust-proof cover 6 is installed, tubulose dust-proof cover 6 is rolled into tubular casing outside valve rod 3 by corrosion resistant plate.Surfacing has hard alloy layer on the annular sealing surface 2-4 of flashboard, the middle part of annular sealing surface 2-4 is the medium surface of contact, built-up welding has hard alloy layer on the preceding medium surface of contact 2-1 of flashboard 2, also built-up welding has hard alloy layer on the medium surface of contact 2-2 of back, and the medium surface of contact is designed to whole plane, adopts supersonic speed surfacing Co-Cr-W hard alloy layer on the 2-3 of the lower end of flashboard; And whole flashboard thickeies 1～2 grade on conventional basis, sees Fig. 1, Fig. 2, Fig. 3.
Claims (2)
1. the dustproof gate valve of a high-temperature corrosion-resistance, comprise gate valve, gate valve mainly is made of valve body, flashboard, valve rod, valve gap, handwheel, the valve rod that the it is characterized in that handwheel top position that leaks outside is equipped with dust-proof cover, dust-proof cover is made of the Stainless Steel Tube of an end closure, dust-proof cover is installed on the valve rod support, covers on the position that leaks outside at valve rod top; At the valve rod of valve rod support and the valve gap position that leaks outside the tubulose dust-proof cover is installed.
2. the high-temperature corrosion-resistance according to claim 1 gate valve that prevents dust, it is characterized in that built-up welding has hard alloy layer on the preceding sealing surface of flashboard being located at, also built-up welding has hard alloy layer on the sealing surface of back, and sealing surface is designed to whole plane, the also surfacing hard alloy layer in the lower end of flashboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202010715U CN201705967U (en) | 2010-05-24 | 2010-05-24 | High-temperature corrosion-resistant anti-dust gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202010715U CN201705967U (en) | 2010-05-24 | 2010-05-24 | High-temperature corrosion-resistant anti-dust gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705967U true CN201705967U (en) | 2011-01-12 |
Family
ID=43443123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202010715U Expired - Fee Related CN201705967U (en) | 2010-05-24 | 2010-05-24 | High-temperature corrosion-resistant anti-dust gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344002A (en) * | 2013-08-02 | 2015-02-11 | 中国石油天然气股份有限公司 | Closed waterproof thermal recovery gate valve |
-
2010
- 2010-05-24 CN CN2010202010715U patent/CN201705967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344002A (en) * | 2013-08-02 | 2015-02-11 | 中国石油天然气股份有限公司 | Closed waterproof thermal recovery gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20170524 |