CN202418774U - Pressure relief control valve for dusty gas - Google Patents
Pressure relief control valve for dusty gas Download PDFInfo
- Publication number
- CN202418774U CN202418774U CN2011205463406U CN201120546340U CN202418774U CN 202418774 U CN202418774 U CN 202418774U CN 2011205463406 U CN2011205463406 U CN 2011205463406U CN 201120546340 U CN201120546340 U CN 201120546340U CN 202418774 U CN202418774 U CN 202418774U
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- China
- Prior art keywords
- valve
- valve body
- dust
- spool
- pressure release
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- Expired - Fee Related
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Abstract
The utility model discloses a pressure relief control valve for dusty gas, which comprises a valve body, a valve seat arranged in the valve body and a valve core in opening and closing fit with the valve seat. A front seal cover and a rear seal cover are respectively arranged at the front and rear ends of the valve body; a gas inlet and a gas outlet are arranged in a staggering way at the two sides of a valve main body of the valve body; an annular baffle is arranged between the gas inlet and the gas outlet in an inner cavity of the valve body; the valve seat is installed on the annular baffle; the valve core is installed at the front end of a pull rod; and the rear end of the pull rod penetrates through the rear seal cover to be connected with an actuating mechanism. The pressure relief control valve is characterized in that the gas inlet is connected with the inner cavity of the valve body through a section of gradually-expanding short pipe. The valve seat and the valve core are preferably manufactured by a ceramic material. According to the pressure relief control valve for dusty gas, accumulation of dust in the valve body can be effectively eliminated, the service life of the pressure relief control valve can be prolonged, and the maintenance time can be shortened.
Description
Technical field
The utility model relates to pressed gas transporting system modulating valve commonly used in the smelting iron and steel production, refers to a kind of dust-containing airflow pressure release modulating valve particularly.
Background technique
In smelting iron and steel is produced, need the pressed gas transporting system of granular material, generally adopt the working principle of transfer pot inflation pressurized delivered granular material.With jar Decompression valves of upward using of winding-up in the bf coal injection system is example: during coal powder injection, Decompression valves bears tank pressure, and requires to end fully, does not allow leakage; After mass transport finishes in jar, need the jar internal pressure be bled off, feed to open the charging valve again.The transfer pot of releasing pressure is accomplished by Decompression valves, contains the material powder of higher concentration in the gas of releasing, and these powders need be reclaimed in order to avoid enter atmosphere and pollute by dust pelletizing system.And Decompression valves is when opening, and gas flow of releasing out and pressure are very big, need the pressure of control Decompression valves outlet, exceeds the pressure that bears of this equipment with the pressure that prevents to get into dusting apparatus or other container.In existing production process, Decompression valves adopts hard seal ball valve usually, or modulating valve; The spool of hard seal ball valve or modulating valve and the material of valve seat are abrasion resistance alloys; Though this alloy has certain rigidity, very short in washing away in the following life-span of high speed dust-contained airflow, warp use rear valve base, spool after a while weares and teares usually; Produce and leak and influence production; And hard seal ball valve or modulating valve cost an arm and a leg, and not only the spare parts consumption expense is big in frequent replacing, and might change the continuity of influence winding-up because of the maintenance of this valve.Simultaneously, owing to contain the material powder of higher concentration in the gas of releasing, and the dead angle is arranged between suction port and valve seat and the spool, pile up materials such as material powder easily, will influence the disappointing effect of Decompression valves for a long time, even cause that Decompression valves stops up.
Summary of the invention
The purpose of the utility model is exactly that a kind of dust-containing airflow pressure release modulating valve that increases the service life, shortens repair time, minimizing production and equipment loss will be provided.
For realizing above-mentioned purpose; The dust-containing airflow pressure release modulating valve that the utility model designed comprises valve body, is installed in the valve seat in the valve body and can opens and closes the spool that cooperates with valve seat, capping and rear seal-cover before the head and the tail two ends of said valve body are respectively arranged with; The valve body both sides of said valve body have shifted to install suction port and air outlet; Between suction port and air outlet, be provided with toroidal membrane in the inner chamber of said valve body, said valve seat is installed on the toroidal membrane, and said spool is installed in the front end of pull bar; The rear end of said pull bar is passed rear seal-cover and linked to each other with actuator, and its special way is: said suction port links to each other with the inner chamber of valve body through one section flaring short tube.Be provided with like this and can eliminate the dead angle, reduce the accumulation of dirt gas, solve material and stop up the Decompression valves problem.
Further, the front end of said pull bar is equipped with pallet, and said spool is seated on the pallet, is provided with sealing gasket between said spool and the pallet, and the pull bar of said pallet back is provided with protecting jacket, and the protection pull bar is not washed away.
Further, the inner ring of said rear seal-cover is provided with the spindle nose black box that matches with pull bar, prevents gas leakage.
Further, said valve seat is a ceramic valve seat, can improve the valve seat wear resistance like this, delays equipment attrition.
Further, said spool is a ceramic valve core, can improve the spool wear resistance like this, delays equipment attrition.
The advantage of the utility model is: the short tube that the design's suction port and valve body intersect adopts the flaring short tube, can eliminate the accumulation of dust in valve body; And valve seat and spool adopt ceramic material, can prolong the life-span of Decompression valves greatly, reduce the repair time, reduce and produce and the equipment loss.
Description of drawings
Fig. 1 is a kind of main TV structure schematic representation of dust-containing airflow pressure release modulating valve.
Among the figure: preceding capping 1, valve body 2, air outlet 3, valve seat 4, spool 5, pallet 6, protecting jacket 7, rear seal-cover 8, pull bar 9, spindle nose sealing 10, suction port 11, flaring short tube 11a, actuator 12, sealing gasket 13, dividing plate 14.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail.
Dust-containing airflow pressure release modulating valve shown in the figure comprises valve body 2, is installed in the valve seat 4 in the valve body 2 and can opens and closes the spool 5 that cooperates with valve seat 4.Valve seat 4 all adopts stupalith to process with spool 5.Capping 1 and rear seal-cover 8 before the head and the tail two ends of valve body 2 are connected with through bolt; The valve body both sides of valve body 2 have shifted to install suction port 11 and air outlet 3; Suction port 11 can be fixed on the valve body 2 through the mode of welding or casting with air outlet 3, and suction port 11 links to each other with the inner chamber of valve body 2 through one section flaring short tube 11a.Like this, the bore of suction port 11 and valve body 2 intersections is greater than the bore of its inlet flange end.Between suction port 11 and air outlet 3, be provided with toroidal membrane 14 in the inner chamber of valve body 2, valve seat 4 is installed on the toroidal membrane 14.The front end of pull bar 9 is equipped with pallet 6, and spool 5 is seated on the pallet 6, is one through bolt locking.Between spool 5 and pallet 6, also be embedded with sealing gasket 13.The pull bar 9 of pallet 6 back is provided with protecting jacket 7.The rear end of pull bar 9 is passed rear seal-cover 8 and is linked to each other with actuator 12, and the inner ring of rear seal-cover 8 is provided with the spindle nose black box 10 that matches with pull bar 9.Actuator 12 can be cylinder or electric actuator, and actuator's 12 pulling pull bars 9 move axially, and pull bar 9 hauls spool 5 and moves, thereby the gap between adjustment valve seat 4 and the spool 5 reaches the effect of regulating lose heart speed and outlet pressure.
Claims (9)
1. dust-containing airflow pressure release modulating valve; Comprise valve body (2), be installed in the valve seat (4) in the valve body (2) and can open and close the spool (5) that cooperates with valve seat (4); The head and the tail two ends of said valve body (2) are respectively arranged with preceding capping (1) and rear seal-cover (8); The valve body both sides of said valve body (2) have shifted to install suction port (11) and air outlet (3); Be positioned in the inner chamber of said valve body (2) between suction port (11) and air outlet (3) and be provided with toroidal membrane (14), said valve seat (4) is installed on the toroidal membrane (14), and said spool (5) is installed in the front end of pull bar (9); The rear end of said pull bar (9) is passed rear seal-cover (8) and linked to each other with actuator (12), it is characterized in that: said suction port (11) links to each other with the inner chamber of valve body (2) through one section flaring short tube (11a).
2. dust-containing airflow pressure release modulating valve according to claim 1; It is characterized in that: the front end of said pull bar (9) is equipped with pallet (6); Said spool (5) is seated on the pallet (6); Be provided with sealing gasket (13) between said spool (5) and the pallet (6), the pull bar (9) of said pallet (6) back is provided with protecting jacket (7).
3. dust-containing airflow pressure release modulating valve according to claim 1 and 2 is characterized in that: the inner ring of said rear seal-cover (8) is provided with the spindle nose black box (10) that matches with pull bar (9).
4. dust-containing airflow pressure release modulating valve according to claim 1 and 2 is characterized in that: said valve seat (4) is a ceramic valve seat.
5. dust-containing airflow pressure release modulating valve according to claim 3 is characterized in that: said valve seat (4) is a ceramic valve seat.
6. dust-containing airflow pressure release modulating valve according to claim 1 and 2 is characterized in that: said spool (5) is a ceramic valve core.
7. dust-containing airflow pressure release modulating valve according to claim 3 is characterized in that: said spool (5) is a ceramic valve core.
8. dust-containing airflow pressure release modulating valve according to claim 4 is characterized in that: said spool (5) is a ceramic valve core.
9. dust-containing airflow pressure release modulating valve according to claim 5 is characterized in that: said spool (5) is a ceramic valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205463406U CN202418774U (en) | 2011-12-23 | 2011-12-23 | Pressure relief control valve for dusty gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205463406U CN202418774U (en) | 2011-12-23 | 2011-12-23 | Pressure relief control valve for dusty gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418774U true CN202418774U (en) | 2012-09-05 |
Family
ID=46743541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205463406U Expired - Fee Related CN202418774U (en) | 2011-12-23 | 2011-12-23 | Pressure relief control valve for dusty gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234052A (en) * | 2013-04-26 | 2013-08-07 | 无锡龙山科技有限公司 | Two-position two-way switching valve |
| CN105276204A (en) * | 2014-06-21 | 2016-01-27 | 李肥生 | Pressure vessel convenient processing method and device for multi-state hybrid material |
-
2011
- 2011-12-23 CN CN2011205463406U patent/CN202418774U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234052A (en) * | 2013-04-26 | 2013-08-07 | 无锡龙山科技有限公司 | Two-position two-way switching valve |
| CN105276204A (en) * | 2014-06-21 | 2016-01-27 | 李肥生 | Pressure vessel convenient processing method and device for multi-state hybrid material |
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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 |
Granted publication date: 20120905 Termination date: 20151223 |
|
| EXPY | Termination of patent right or utility model |