CN203686195U - Stop valve for melamine production line - Google Patents
Stop valve for melamine production line Download PDFInfo
- Publication number
- CN203686195U CN203686195U CN201420050621.6U CN201420050621U CN203686195U CN 203686195 U CN203686195 U CN 203686195U CN 201420050621 U CN201420050621 U CN 201420050621U CN 203686195 U CN203686195 U CN 203686195U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- body cap
- body cover
- cut
- 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 - Lifetime
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 19
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000009413 insulation Methods 0.000 claims description 36
- 230000008676 import Effects 0.000 claims description 11
- 238000010926 purge Methods 0.000 claims description 8
- 238000002425 crystallisation Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract 4
- 239000013078 crystal Substances 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to a stop valve for a melamine production line. The stop valve for the melamine production line comprises a valve body, a valve body cover, a valve body cover support and a valve drive actuator, and is characterized in that the valve body cover is located above the valve body and connected with the valve body through bolts, the upper portion of the valve body cover is connected with the valve body cover support through bolts, a valve body cover support heat preservation clamping sleeve is arranged outside the valve body cover support, a valve body cover heat preservation clamping sleeve is located outside the valve body cover, a valve body heat preservation clamping sleeve is located outside the valve body, and a plurality of through holes are formed in the circumferential surface located at a medium inlet end of the valve body. Compared with the prior art, the heat preservation clamping sleeves are additionally arranged outside the valve body cover, the valve body and the valve body cover support of the stop valve respectively, a valve rod is effectively prevented from being crystallized, and it is guaranteed that crystals are formed between a flashboard and the valve body contact surface. The stop valve is simple and reasonable in structure, good in anti-crystallization effect and reliable and safe in sealing performance.
Description
Technical field
The utility model relates to valve technology field, specifically a kind of cut-off valve for melamine product line.
Background technique
On the valve gap of the cut-off valve using in petrochemical industry operating mode at present and support, be not add insulation jacket, therefore in the time of the production for melamine, to the medium poor effect of the easy crystallizations such as melamine, can in the process of carrying, can there is crystallization by valve rod and the flashboard to cut-off valve in melamine, affect stem packing sealing and valve seal, thereby cause leaking, cause major accident.
Summary of the invention
The utility model is for overcoming the deficiencies in the prior art, sets up respectively insulation jacket in the outside of body cap, valve body and the body cap support of cut-off valve, effectively prevented the crystalline polamer of valve rod, guarantees the performance of stem packing sealing; At valve body media entry end, place sets up porous, and connects with thermal insulation clamp mantle cavity, has ensured to produce crystallization between flashboard and valve body surface of contact, makes valve opening, closes freely, simple and reasonable, crystallization-preventive respond well, sealability reliably, safety.
For achieving the above object, design a kind of cut-off valve for melamine product line, comprise that valve body, body cap, body cap support, valve drive actuator, it is characterized in that: body cap is positioned at the top of valve body, and body cap is connected with valve body by bolt, the top of body cap is bolted body cap support; The outside that is positioned at body cap support is provided with body cap support lagging, and the outside that is positioned at body cap is provided with body cap insulation jacket, and the outside that is positioned at valve body is provided with valve body insulation jacket; The circumferential surface that is positioned at valve body media entry end place is provided with some through holes.
One side of described body cap insulation jacket is connected with one end of stop valve, and the other end of stop valve connects insulation and purges import.
One side of described body cap is provided with another through hole.
One side of described valve body insulation jacket is connected with one end of another stop valve, and the other end of another stop valve connects one end of safety check, and the other end of safety check connects insulation import.
The upper end of described body cap support is connected with valve and drives actuator.
The lower end of described valve body is connected with and is purged outlet by valve.
The utility model compared with the existing technology, is set up respectively insulation jacket in the outside of body cap, valve body and the body cap support of cut-off valve, has effectively prevented the crystalline polamer of valve rod, guarantees the performance of stem packing sealing; At valve body media entry end, place sets up porous, and connect with thermal insulation clamp mantle cavity, in the time that insulation gas enters entry end, between insulation gas and medium, form one deck barrier, ensure to produce crystallization between flashboard and valve body surface of contact, made valve opening, close freely, simple and reasonable, crystallization-preventive respond well, sealability is reliable, safety.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Referring to Fig. 1,1 for valve drives actuator, and 2 is body cap support lagging, 3 is insulation and purging import, and 4 is stop valve, and 5 is body cap insulation jacket, 6 is another stop valve, and 7 is safety check, and 8 is insulation import, 9 is valve body insulation jacket, and 10 is valve rod, and 11 is through hole, 12 is flashboard, and 13 is valve body, and 14 for purging outlet, 15 is another through hole, and 16 is body cap, and 17 is body cap support.
Embodiment
With reference to the accompanying drawings the utility model is described further below.
As shown in Figure 1, body cap 16 is positioned at the top of valve body 13, and body cap 16 is connected with valve body 13 by bolt, and the top of body cap 16 is bolted body cap support 17; The outside that is positioned at body cap support 17 is provided with body cap support lagging 2, and the outside that is positioned at body cap 16 is provided with body cap insulation jacket 5, and the outside that is positioned at valve body 13 is provided with valve body insulation jacket 9; The circumferential surface that is positioned at valve body 13 end places, medium inlet is provided with some through holes 11.
One side of body cap insulation jacket 5 is connected with one end of stop valve 4, and the other end of stop valve 4 connects insulation and purges import 3.
One side of body cap 16 is provided with another through hole 15.
One side of valve body insulation jacket 9 is connected with one end of another stop valve 6, and the other end of another stop valve 6 connects one end of safety check 7, and the other end of safety check 7 connects insulation import 8.
The upper end of body cap support 17 is connected with valve and drives actuator 1.
The lower end of valve body 13 is connected with and is purged outlet 14 by valve.
In the coated one deck valve body insulation jacket 9 in the outside of valve body 13, insulation import 8 places of valve body insulation jacket 9 are provided with safety check 7 and another stop valve 6, hot gas enters inner chamber after entering insulation import 8, and set up some through holes 11 at end place, the medium inlet of valve body 13, the hot gas that enters like this inner chamber enters in medium entrance point chamber and forms barrier between melamine, prevent melamine crystallization on flashboard 12, set up respectively body cap support lagging 2 and body cap insulation jacket 5 in the outside of body cap support 17 and body cap 16, effectively prevent that melamine from producing crystallization, guarantee that valve opening and closing is easily smooth and easy, and the pressure of hot gas is not more than the working pressure of melamine in whole process.
Insulation and purging import 3 places are provided with stop valve 4, when entering the purging outlet 14 that body cap insulation jacket 5 inner chambers enter valve pocket and valve body 13 lower ends through another through hole 15, hot gas is communicated with, purge outlet 14 places and be provided with and control out the cut-off valve of sweeping discharge, that effectively controls hot gas goes out to sweep discharge.
Simple and reasonable, crystallization-preventive respond well, sealability is reliable, safety.
Claims (6)
1. the cut-off valve for melamine product line, comprise that valve body, body cap, body cap support, valve drive actuator, it is characterized in that: body cap (16) is positioned at the top of valve body (13), and body cap (16) is connected with valve body (13) by bolt, and the top of body cap (16) is bolted body cap support (17); The outside that is positioned at body cap support (17) is provided with body cap support lagging (2), and the outside that is positioned at body cap (16) is provided with body cap insulation jacket (5), and the outside that is positioned at valve body (13) is provided with valve body insulation jacket (9); The circumferential surface that is positioned at end place, valve body (13) medium inlet is provided with some through holes (11).
2. a kind of cut-off valve for melamine product line according to claim 1, it is characterized in that: a side of described body cap insulation jacket (5) is connected with one end of stop valve (4), the other end of stop valve (4) connects insulation and purges import (3).
3. a kind of cut-off valve for melamine product line according to claim 1, is characterized in that: a side of described body cap (16) is provided with another through hole (15).
4. a kind of cut-off valve for melamine product line according to claim 1, it is characterized in that: a side of described valve body insulation jacket (9) is connected with one end of another stop valve (6), the other end of another stop valve (6) connects one end of safety check (7), and the other end of safety check (7) connects insulation import (8).
5. a kind of cut-off valve for melamine product line according to claim 1, is characterized in that: the upper end of described body cap support (17) is connected with valve and drives actuator (1).
6. a kind of cut-off valve for melamine product line according to claim 1, is characterized in that: the lower end of described valve body (13) is connected with and is purged outlet (14) by valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050621.6U CN203686195U (en) | 2014-01-26 | 2014-01-26 | Stop valve for melamine production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050621.6U CN203686195U (en) | 2014-01-26 | 2014-01-26 | Stop valve for melamine production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686195U true CN203686195U (en) | 2014-07-02 |
Family
ID=51008095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420050621.6U Expired - Lifetime CN203686195U (en) | 2014-01-26 | 2014-01-26 | Stop valve for melamine production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265995A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Insulating gate valve |
| CN109253270A (en) * | 2018-10-15 | 2019-01-22 | 兰州高压阀门有限公司 | A kind of muff gate valve under special operation condition |
-
2014
- 2014-01-26 CN CN201420050621.6U patent/CN203686195U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265995A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Insulating gate valve |
| CN109253270A (en) * | 2018-10-15 | 2019-01-22 | 兰州高压阀门有限公司 | A kind of muff gate valve under special operation condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Di Inventor after: Su Zhengchu Inventor after: Su Yang Inventor after: Su Zhengchao Inventor before: Zhang Di |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161027 Address after: 201707, No. 1, No. 579, new waterway, Qingpu Industrial Park, Qingpu District, Shanghai Patentee after: SHANGHAI FEIQIU TECHNOLOGY (GROUP) CO.,LTD. Address before: 201707, No. 579, new waterway, Qingpu Industrial Development Zone, Qingpu District, Shanghai Patentee before: SHANGHAI FEIQIU VALVE Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |