CN202790585U - Erosion-resistant small-caliber forged steel stop valve - Google Patents
Erosion-resistant small-caliber forged steel stop valve Download PDFInfo
- Publication number
- CN202790585U CN202790585U CN 201220458193 CN201220458193U CN202790585U CN 202790585 U CN202790585 U CN 202790585U CN 201220458193 CN201220458193 CN 201220458193 CN 201220458193 U CN201220458193 U CN 201220458193U CN 202790585 U CN202790585 U CN 202790585U
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- China
- Prior art keywords
- valve
- valve body
- erosion
- protection sleeve
- forged steel
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- 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 an erosion-resistant small-caliber forged steel stop valve which comprises a valve body, a valve clack, a valve rod, a support, a hand wheel, a seal element and a mounting element; the lower end of the valve rod is fixedly connected with the valve clack; the upper end of the valve rod is fixedly connected with the hand wheel through a valve rod nut on the support; a hard alloy valve seat is overlaid between the inlet and outlet of the valve body; a protection sleeve is arranged in the middle cavity of the valve body mainly; the lower end of the protection sleeve is installed on the outer periphery of the valve seat in a pressing manner; the upper end of the protection sleeve is pressed tightly and installed in the valve body by virtue of a nut; a bore-based hard alloy is overlaid in the inner surface of the protection sleeve; and a round hole which has the same diameter with a valve body outlet channel is formed between the protection sleeve and the valve body outlet channel. The erosion-resistant performance of the valve body is improved, and the erosion-resistant small-caliber forged steel stop valve has the advantages of seal reliability, long service life and the like, and is suitable for high-pressure small-bore abrasive medium working conditions.
Description
Technical field
The utility model relates to valve field, particularly about a kind of forged steel check valve.The utility model is suitable for high-pressure small-bore abrasiveness medium operating mode.
Background technique
Existing small-caliber forged steel check valve generally is comprised of valve body, flap, valve rod, support, handwheel, Sealing and assembling set, the valve rod lower end is fixedly connected with flap, the valve rod upper end is fixedly connected with handwheel by the Stem Mut on the support, pile-up welding hard alloy valve seat between valve body import and outlet, the valve clack sealing surface pile-up welding hard alloy, the abrasion resistance properties of raising sealing pair.Its shortcoming is: when flap was opened, the high-voltage high-speed flow medium produced very large washing away to the valve body lumen, causes valve leakage out of steam system, and product is short working life.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, provides that a kind of scour resistance is strong, the fluid erosion prevention small-caliber forged steel check valve of good seal performance, long service life.
The technical solution of the utility model comprises that valve body, flap, valve rod, support, handwheel, Sealing and assembling set form; the valve rod lower end is fixedly connected with flap; the valve rod upper end is fixedly connected with handwheel by the Stem Mut on the support; pile-up welding hard alloy valve seat between valve body import and outlet; mainly be that the valve body lumen is provided with protecting jacket; this protecting jacket lower end is fitted in the valve seat periphery; the upper end is compressed by nut and is installed in the valve body; protecting jacket inside surfacing cobalt base hard alloy is shaped with the circular hole with valve outlet passage same diameter between protecting jacket and the valve outlet passage.
The utility model beneficial effect compared with prior art is at the valve body lumen protecting jacket to be set, and has improved the valve body flushing resistance, and sealing is reliable, long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Fluid erosion prevention small-caliber forged steel check valve as shown in Figure 1, comprise that valve body 1, flap 2, valve rod 4, support 6, handwheel 8, Sealing and assembling set form, valve rod 4 lower ends are fixedly connected with flap 2, valve rod 4 upper ends are fixedly connected with handwheel 8 by the Stem Mut 7 on the support 6, pile-up welding hard alloy valve seat between valve body 1 import and outlet, the valve clack sealing surface pile-up welding hard alloy, the abrasion resistance properties of raising sealing pair.Valve body 1 lumen is provided with protecting jacket 3, and these protecting jacket 3 lower ends are fitted in the valve seat periphery, and the upper end is compressed by nut 5 and is installed in the valve body 1; protecting jacket 3 inside surfacing cobalt base hard alloys; improve flushing resistance, protection valve body 1 lumen is improved sealability and working life by the medium erosion.Be shaped with the circular hole with valve body 1 outlet passage same diameter between protecting jacket 3 and valve body 1 outlet passage.Valve body 1 adopts forged steel pieces to shape, and adopts packing seal between valve body 1 and the valve rod 4, and this filler is compressed by gland 9 and swing bolt 10 and installs.
Claims (1)
1. fluid erosion prevention small-caliber forged steel check valve; comprise valve body (1); flap (2); valve rod (4); support (6); handwheel (8); Sealing and assembling set; valve rod (4) lower end is fixedly connected with flap (2); valve rod (4) upper end is fixedly connected with handwheel (8) by the Stem Mut (7) on the support (6); pile-up welding hard alloy valve seat between valve body (1) import and outlet; it is characterized in that valve body (1) lumen is provided with protecting jacket (3); this protecting jacket (3) lower end is fitted in the valve seat periphery; the upper end is compressed by nut (5) and is installed in the valve body (1); protecting jacket (3) inside surfacing cobalt base hard alloy is shaped with the circular hole with valve body (1) outlet passage same diameter between protecting jacket (3) and valve body (1) outlet passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458193 CN202790585U (en) | 2012-09-08 | 2012-09-08 | Erosion-resistant small-caliber forged steel stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458193 CN202790585U (en) | 2012-09-08 | 2012-09-08 | Erosion-resistant small-caliber forged steel stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790585U true CN202790585U (en) | 2013-03-13 |
Family
ID=47817850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220458193 Expired - Fee Related CN202790585U (en) | 2012-09-08 | 2012-09-08 | Erosion-resistant small-caliber forged steel stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387776A (en) * | 2017-07-17 | 2017-11-24 | 中国船舶重工集团公司第七0三研究所 | A kind of bottom blowoff valve suitable for Turbo-charged Marine Boiler |
-
2012
- 2012-09-08 CN CN 201220458193 patent/CN202790585U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387776A (en) * | 2017-07-17 | 2017-11-24 | 中国船舶重工集团公司第七0三研究所 | A kind of bottom blowoff valve suitable for Turbo-charged Marine Boiler |
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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: 20130313 Termination date: 20200908 |