CN201246482Y - Heat insulation cock valve - Google Patents
Heat insulation cock valve Download PDFInfo
- Publication number
- CN201246482Y CN201246482Y CNU2008200302054U CN200820030205U CN201246482Y CN 201246482 Y CN201246482 Y CN 201246482Y CN U2008200302054 U CNU2008200302054 U CN U2008200302054U CN 200820030205 U CN200820030205 U CN 200820030205U CN 201246482 Y CN201246482 Y CN 201246482Y
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- Prior art keywords
- cock
- valve body
- insulation
- stopcock
- valve
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- Expired - Fee Related
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Abstract
Disclosed is an insulation cock valve, which comprises a valve body (1) and a cock (2) thereof, the cock (2) rotates in the valve body (1) to open or close the insulation cock valve, wherein a portion of the cock (2) on a through hole (201) is equipped with two-stage portions with gradually reduced cock diameters, namely a first portion (203) and a second portion (204), wherein sealing fillers (4) are filled in the first portion (203), the second portion (204) is pressed and engaged with a cock gland (202), in addition, the sealing fillers (4) are sealing stuffing with over 500 DEG C temperature resistance, and the cock (2) is a thermal resistant steel cock. The utility model resolves the technical problems that asphalt is easy to leak, and the valve stem is easy to be broken or cracked in the background technique. The insulation cock valve has high reliability and sound interchangeability, and a connector cover of the cock valve is hard to be stolen.
Description
Technical field:
The utility model relates to a kind of stopcock, is specifically related to a kind of railway asphalt truck insulation stopcock.
Background technique:
At present, the valve of the most of asphalt truck dress of China usefulness has two kinds of iron insulation stopcock (model is BX43W (T)-6) and Thermal insulating ball valves (model is BQ41F-16C).Find that in use there are some problems in two kinds of valves aspect technical performance and the reliability, as pitch sew, valve stem crack, end cap lose problems such as more.Concrete iron insulation stopcock existing problems have pitch to leak, valve rod easy-rupturing or crackle occurs, and end cap is lost; The Thermal insulating ball valve existing problems: pitch leaks, and end cap is lost.
The analysis reason is specific as follows:
It is that sealing material can not satisfy the pitch heating applying working condition of unloading that pitch is sewed main cause.
The asphalt solidification point is 70 ℃, unloads for ease of pitch, and the asphalt truck lower discharge valve has all designed steam jacket, feeds steam when unloading and heat in steam jacket.But according to investigations, pitch is relatively poor 110 ℃ of flowabilities, and the temperature of unloading is usually at 120 ℃～140 ℃.The user all adopts flame directly to valve heating in the winter time in the reality in order to save trouble, summer also most flame heating that adopt, part adopts steam heating period.Adopt in the roasting mode of heating process of fire about 500 ℃ of flame temperature, about 300 ℃ of valve shell lower surface by having measured.
Iron insulation stopcock sealing material adopts rubber asbestos packing or oil immersion asbestos packing, and rubber asbestos disk root system is tackiness agent with asbestos cloth, asbestos yarn with rubber, the sealing material that rolls or be woven into.The oil immersion asbestos packing is with asbestos yarn (or metallic asbestos yarn) immersion lubrication oil and graphite braiding or turns round the sealing material of making.Two kinds of sealing materials are according to the difference of the trade mark, the sealing under the applicable different vapor (steam) temperature.Temperature is too high, and lubricant oil or rubber lost efficacy, and lost sealability.When temperature is higher than 500 ℃, the water of crystallization of asbestos product inside decomposes out, makes self efflorescence, loses effect.Above-mentioned material can not satisfy the roasting usage requirement of fire, causes pitch to sew.
The valve base sealing material of Thermal insulating ball valve adopts polytetrafluoroethylmaterial material, recommends to use maximum temperature to be not more than 232 ℃.Temperature is too high, may make teflon (valve base sealing material) deliquescing, in the valve opening process valve base sealing material is extruded, and causes pitch to sew.
Iron insulation stopcock spool material is a cast iron, between valve rod and sealing surface, exists the abrupt change of cross-section.When the pitch in the valve does not melt, as brute force twisting valve rod, may produce bigger moment of torsion in abrupt change of cross-section place, crackle even fracture take place, often there is valve plug abrupt change of cross-section place to have fracture and crackle to exist in the maintenance.
End cap adopts iron chains to be connected on the tank body, and also there is steal phenomenon in inconvenient user's operation when structural design.
The model utility content:
The purpose of this utility model is to provide a kind of insulation stopcock, the technical problem that it has solved leakage of background technique medium pitch and valve rod easy-rupturing or crackle occurred.
The technical solution of the utility model is as follows:
A kind of thermal-insulation plug valve; Comprise valve body 1 and cock 2; Described valve body 1 comprises a fluid hole 101 and the blind flange 102 that is arranged at 1 two terminations of valve body; The outlet of described fluid hole 101 also is provided be used to the connection cover 3 of closing this outlet; Described cock 2 radially arranges a through hole 201; Described cock 2 is sealingly fastened in the valve body 1 by cock gland 202; Be provided with airtight and watertight padding 4 between described cock 2 and the valve body 1; Described cock 2 is rotated in valve body 1 and is realized opening and closure of this thermal-insulation plug valve
Its special way is:
The part that described cock 2 is positioned on the through hole 201 has the part that two-stage plug footpath reduces successively, is respectively first portion 203 and second portion 204; Described stuffing box packing 4 is positioned at first portion 203, and described second portion 204 presses with cock gland 202 and cooperates;
Described stuffing box packing 4 is the stuffing box packing of heatproof degree more than 500 ℃;
Described cock 2 is the refractory steel cock.
Above-mentioned connecting cover 3 is connected by the blind flange 102 of bearing pin 5 with liquid outlet opening 101 outlets, and by tongue-and-groove 6 sealings; Described connecting cover 3 can outwards be opened along liquid outlet opening 101 outlets, and still is connected with blind flange 102.
Above-mentioned valve body 1 also is provided with heating resistance collar 103.
Above-mentioned valve body 1 also is provided with the convenient suspension ring 104 that valve body 1 is installed.
The outer end of above-mentioned cock 2 also is provided with the switch mark 205 with through hole 201 location matches.
Above-mentioned described stuffing box packing 4 is an Expanded graphite, and described Expanded graphite is to be raw material with squama graphite, handles generating intercalation compound through chemical industry.
The utlity model has following advantage:
1. reliability height.Sealing material adopts Expanded graphite, can adapt to the roasting usage requirement of fire; Major part adopts carbon steel, refractory steel, and the raising torsional strength of optimizing structure, and solves the low problem of valve rod intensity; Improve the connector cover structure, be convenient to operation, improve theftproof performance.
2. interchangeability is good.Valve seat mounting structure, size and existing valve member are in full accord, can unconditionally exchange.
3. connector cover is difficult for stolen.Improve the connector cover structure, be convenient to operation, improve theftproof performance.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a ssembly drawing of the present utility model.
Description of reference numerals:
1-valve body; 101-liquid outlet opening; 102-blind flange; 103-heating resistance collar; 104-suspension ring; 2-cock; 201-through hole; 202-cock gland; 203-first portion; 204-second portion; 3-connecting cover; 4-stuffing box packing; 5-bearing pin; 6-tongue-and-groove.
Embodiment
Referring to Fig. 1, a kind of insulation stopcock, comprise valve body 1 and cock 2, valve body 1 comprises a liquid outlet opening 101 and the blind flange 102 that is arranged at 1 two terminations of valve body, the outlet of liquid outlet opening 101 also is provided with the connecting cover 3 that is used to close this outlet, cock 2 radially is provided with a through hole 201, cock 2 is sealingly fastened in the valve body 1 by cock gland 202, being provided with material between cock 2 and the valve body 1 is the stuffing box packing 4 of Expanded graphite, cock 2 is rotated in valve body 1 and is realized opening and closure of this insulation stopcock, the part that cock 2 is positioned on the through hole 201 has the part that two-stage plug footpath reduces successively, is respectively first portion 203 and second portion 204; Stuffing box packing 4 is positioned at first portion 203, and second portion 204 presses with cock gland 202 and cooperates; Cock 2 is the refractory steel cock, and connecting cover 3 is connected by the blind flange 102 of bearing pin 5 with liquid outlet opening 101 outlets, and by tongue-and-groove 6 sealings; Described connecting cover 3 can outwards be opened along liquid outlet opening 101 outlets, and still be connected with blind flange 102, valve body 1 also is provided with heating resistance collar 103, and valve body 1 also is provided with the convenient suspension ring 104 that valve body 1 is installed, and the outer end of cock 2 also is provided with the switch mark 205 with through hole 201 location matches.
During use, connecting cover 3 is closed in the process of conveying asphalt, and also cock 2 is in the closed position, the through hole 201 that radially is provided with of cock 2 this moment not with the interior liquid outlet opening 101 of valve body 1 together with, realize closing of whole insulation stopcock; When needing unloading pitch, heat valve body 1 earlier, can directly heat with fire, also can be with steam by heating resistance collar 103 heating, because the refractory steel cock is adopted in the utility model cock 2, stuffing box packing 4 is an Expanded graphite, temperature (more than 500 ℃) when it is enough to the ability heating, stuffing box packing 4 can not change or lose efficacy, can thoroughly solve the problem that pitch is revealed, secondly the utility model connecting cover 3 is fixed with one with blind flange 102 all the time, is difficult for taking place the phenomenon that connecting cover 3 is had things stolen, switch mark 205 can intuitively be found out cock 2 switching situations, easy-to-operat.
Claims (6)
1. insulation stopcock, comprise valve body (1) and cock (2), the blind flange (102) that described valve body (1) comprises a liquid outlet opening (101) and is arranged at (1) two termination of valve body, the outlet of described liquid outlet opening (101) also is provided with the connecting cover (3) that is used to close this outlet, described cock (2) radially is provided with a through hole (201), described cock (2) is sealingly fastened in the valve body (1) by cock gland (202), be provided with stuffing box packing (4) between described cock (2) and the valve body (1), described cock (2) is rotated in valve body (1) and is realized opening and closure of this insulation stopcock, it is characterized in that: the part that described cock (2) is positioned on the through hole (201) has the part that two-stage plug footpath reduces successively, is respectively first portion (203) and second portion (204); Described stuffing box packing (4) is positioned at first portion (203), and described second portion (204) presses with cock gland (202) and cooperates; Described stuffing box packing (4) is the stuffing box packing of heatproof degree more than 500 ℃; Described cock (2) is the refractory steel cock.
2. according to the described insulation stopcock of claim 1, it is characterized in that: described connecting cover (3) is connected by the blind flange (102) of bearing pin (5) with liquid outlet opening (101) outlet, and by tongue-and-groove (6) sealing; Described connecting cover (3) can outwards be opened along liquid outlet opening (101) outlet, and still is connected with blind flange (102).
3. according to claim 1 or 2 arbitrary described insulation stopcocks, it is characterized in that: described valve body (1) also is provided with heating resistance collar (103).
4. according to the described insulation stopcock of claim 3, it is characterized in that: described valve body (1) also is provided with the convenient suspension ring 104 that valve body (1) is installed.
5. according to the described insulation stopcock of claim 4, it is characterized in that: the outer end of described cock (2) also is provided with the switch mark (205) with through hole (201) location matches.
6. according to the described insulation stopcock of claim 5, it is characterized in that: described stuffing box packing (4) is for Expanded graphite, and described Expanded graphite is to be raw material with squama graphite, handles generating intercalation compound through chemical industry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200302054U CN201246482Y (en) | 2008-09-05 | 2008-09-05 | Heat insulation cock valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200302054U CN201246482Y (en) | 2008-09-05 | 2008-09-05 | Heat insulation cock valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246482Y true CN201246482Y (en) | 2009-05-27 |
Family
ID=40730304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200302054U Expired - Fee Related CN201246482Y (en) | 2008-09-05 | 2008-09-05 | Heat insulation cock valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201246482Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265937A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Self-limited insulated ball valve |
| CN108302215A (en) * | 2018-04-08 | 2018-07-20 | 江苏圣泰阀门有限公司 | Ultralow temperature plug valve |
| CN113883296A (en) * | 2020-07-03 | 2022-01-04 | 包头北方创业有限责任公司 | Plug valve for asphalt tank truck |
-
2008
- 2008-09-05 CN CNU2008200302054U patent/CN201246482Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265937A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Self-limited insulated ball valve |
| CN108302215A (en) * | 2018-04-08 | 2018-07-20 | 江苏圣泰阀门有限公司 | Ultralow temperature plug valve |
| CN108302215B (en) * | 2018-04-08 | 2018-12-28 | 江苏圣泰阀门有限公司 | Ultralow temperature plug valve |
| CN113883296A (en) * | 2020-07-03 | 2022-01-04 | 包头北方创业有限责任公司 | Plug valve for asphalt tank truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20130905 |