CN201144072Y - Positive-pressure negative-pressure safe releasing device of steel silo - Google Patents
Positive-pressure negative-pressure safe releasing device of steel silo Download PDFInfo
- Publication number
- CN201144072Y CN201144072Y CNU2008200691160U CN200820069116U CN201144072Y CN 201144072 Y CN201144072 Y CN 201144072Y CN U2008200691160 U CNU2008200691160 U CN U2008200691160U CN 200820069116 U CN200820069116 U CN 200820069116U CN 201144072 Y CN201144072 Y CN 201144072Y
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- cover plate
- silo
- seal ring
- mandrel
- pressure
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Abstract
The utility model relates to a positive and negative pressure safe releasing device of an armor plate silo; the device includes a sleeve (15) fixedly arranged at the top part of the silo and communicated with the inner cavity of the silo; the upper edge opening of the sleeve is covered with an air pressure releasing adjusting cover with a diameter larger than the outer diameter of the sleeve by a hinged mode; the adjusting cover includes a cover cap body (10) of a concave structure; a cover plate (6) sealed at the bottom part of the cover cap body, a seal ring (17) fixedly arranged on the bottom surface of the cover plate and a movable cover plate (8) arranged below the seal ring; a mandrel (3) extending vertically and upwards is arranged in the central part of the movable cover plate; the mandrel is combined with the central shaft hole of the cover plate arranged above the mandrel in a mode of movable fit; a pressure spring (2) is arranged on the mandrel extending section arranged above the central shaft hole of the cover plate by the upper pressure cover (5) of a spring and a locknut (4); the periphery of the cover plate is provided with an air inlet (1) communicated with the atmosphere; the middle part of the cover plate is provided with a venthole (7) communicated with a cavity together formed by a bottom surface communicated with the cover plate, the inner annular surface of the seal ring and the upper plane of the movable cover plate.
Description
Technical field
The utility model relates to a kind of being used for adopting the gas delivery process form to store, as liquid, powdery (flour, cement, coal dust etc.) or granular material fully enclosed steel silo and be installed in the steel silo positive and negative pressure safe release device at silo top.
Background technology
Prior art expects that to being used for storage of liquids, powdery (flour, cement, coal dust etc.) or granular substance the form of transporting in the steel silo is: adopt the gas pulses transporting pattern, the inlet point design is on the steel silo top cover, and material is from entering in the steel silo warehouse; Discharging opening mostly designs the bottom at steel silo.
Because the material that advances silo is aqueous, powdery or graininess, in material enters silo the time, a large amount of air also enters in the silo simultaneously in the reality, because gas can not be got rid of moment in the increase of material and the silo, and the formation malleation silo storehouse in; When material delivers from godown bottom silo, to unload under the storage material in the silo, negative pressure appears in the silo internal pressure.When occurring in the silo under above-mentioned malleation and the negative pressure two states situation, with the influence that directly safe handling of steel silo is produced following aspect.
One, barotropic state appears when the steel silo internal pressure, when just the steel silo internal pressure is greater than extraneous normal atmosphere (An):
1, owing to the effect of malleation in the storehouse, the drawing crack phenomenon usually appears in the weld in steel silo Cang Gai and silo body upper port, and serious situation can make Cang Gai break away from the silo warehouse.
2, cracking occurs at weld as Cang Gai, with the sealing effectiveness of havoc silo, a part of material overflows to the external world from cracking, makes material cause waste, has caused rainwater and dirt to flow in the storehouse on the other hand, and makes that material in the silo is rotten and damage.
3, because the manufacture craft of steel silo cylindrical shell is welding and spiral seaming and the cylindrical tube warehouse that forms.Positive pressure in the warehouse covers to warehouse wall and storehouse, makes warehouse the pulling force that ring draws and makes progress occur, and this tension is at the weak link (weld seam and seaming place) of warehouse, and long-time bigger positive pressure serious threat is to the silo safe handling.
Two, at material during from the silo bottom discharge, negative pressure state appears in the steel silo internal pressure, when just the steel silo internal pressure is less than extraneous normal atmosphere (An):
1, because of the suction function in the silo, silo Cang Gai shrinkage distortion in silo, silo storehouse lid weld will occur ftractureing and large-area Cang Gai is out of shape occur hollow, and it is hollow that fitfull also appears in warehouse.
2, silo in use, because of frequently carrying out into and out of material, positive and negative pressure in the silo also will frequently act on Cang Gai and the silo wall, particularly silo top warehouse carries out continually because of the two-way of malleation and negative pressure, after fatigue appears in the steel plate weld seam, warehouse, storehouse top cover will the phenomenon of splitting occur, and be light then have influence on the normal use of silo, heavy then cause serious accident to take place.
Summary of the invention
The purpose of this utility model provides a kind of steel silo positive and negative pressure safe release device at existing weak point in the above-mentioned prior art just.
The purpose of this utility model can realize by following technical measures:
Steel silo positive and negative pressure safe release device of the present utility model comprise be fixedly mounted on the silo top and with the jacket casing of silo intracavity inter-connection, on the upper port of jacket casing by the pivotally attached mode cover be placed with diameter greater than jacket casing outside the air pressure of warp discharge adjustable cap; Described adjustable cap comprises the block body of concave structure, is encapsulated in the cover plate of block body bottom, is fixedly mounted on the seal ring on the cover plate bottom surface, is positioned at the mobile cover plate of seal ring below; The external diameter of described seal ring is greater than the outer warp of jacket casing, and its internal diameter is greater than the external diameter of mobile cover plate; The external diameter of described mobile cover plate is less than the interior warp of jacket casing; Be provided with a mandrel that extends straight up in the centre of mobile cover plate, this mandrel combines with the cover plate central shaft hole that is positioned at its top in the mode of running-fit, by spring upper press cover, jam nut stage clip is installed on the mandrel extension that is positioned at above the cover plate central shaft hole; The periphery of described cover plate is provided with the some induction openings that are connected with atmosphere, and the middle part is provided with some air extractor vents that cavity that connection is made of jointly the last plane of bottom surface, seal ring inner ring surface and the mobile cover plate of cover plate is connected.
Air pressure described in the utility model discharges adjustable cap and discharges the engaging lug of adjustable cap homonymy by being separately positioned on jacket casing and air pressure, and hinge combines.
The upper end of the stage clip described in the utility model is inlaid in the annular deep gouge that spring upper press cover lower surface processes, and the lower end of this stage clip is inlaid in the annular deep gouge that processes around cover plate central shaft hole upper surface.
Jacket casing described in the utility model can directly be welded on the silo loam cake platform, also can adopt alternate manner to be fixed on the silo loam cake inclined-plane, no matter how many degree are the gradient of silo Cang Gai be, the axis of this steel silo positive and negative pressure safe release device should be perpendicular to ground.
Principle of work of the present utility model is as follows:
Barotropic state in a, the steel silo:
When material adopts the gas delivery form from the steel silo its top feed, can produce the malleation phenomenon in the steel silo, promptly the pressure in the steel silo is greater than the normal atmosphere (An) of external environment condition.In the malleation in the steel silo enters the jacket casing chamber of this device, and act on the lower plane of mobile cover plate in this device, the seal ring lower plane is close on the last plane of mobile cover plate, positive pressure upwards promotes cover plate simultaneously, and then drive whole air pressure and discharge adjustable cap overcomes adjustable cap self under the effect of malleation gravity, the rotation side direction is opened around the hinge axle center, and the barotropic gas in the steel silo is discharged to the external world, realizes the purpose of release.When the pressure in the steel silo outwards was discharged into the external atmosphere pressure basically identical, air pressure discharged the weight falling of adjustable cap by self, and makes the seal ring that is positioned under the cover plate be close to the jacket casing upper port, with jacket casing sealing suitable for reading.
Negative pressure state in b, the steel silo:
When the steel silo bottom draws off material, can produce negative pressure appearance in the silo, promptly the pressure in the steel silo is less than the normal atmosphere (An) of external environment condition.Mobile cover plate is under the effect of negative pressure, overcome stage clip elastic force to bottom offset, and with the separated attitude of the lower sealing surface of seal ring, at this moment, outside air then enters the cavity that is made of jointly plane on block body inwall and the cover plate by some induction openings that the cover plate periphery is provided with, and enter in the steel silo chamber via some air extractor vents that are arranged on cover plate middle part and the gap between mobile cover plate and the seal ring, play the effect of the negative pressure in the balance steel silo chamber.When the inside and outside pressure reduction basically identical of silo, mobile cover plate moves up under the application force of stage clip, and forms sealing state with the lower sealing surface of seal ring, and steel silo and ambient atmosphere are completely cut off, and makes silo be in air-tight state.
The beneficial effects of the utility model are as follows:
A, effectively solved material in entering steel silo in the silo chamber and the malleation that produces, and material is when drawing off steel silo, in the silo chamber and the destruction that the negative pressure that produces causes the steel silo body,
B, prevented silo internal cause positive and negative pressure and the silo storehouse of causing lid weld cracking.
C, the intensity of having protected steel silo seaming place and the sealing effectiveness at seaming place, and the weld strength of welding chamber.Reduced the distortion at steel silo seaming place effectively.
D, raising, prolonged the used life of steel silo.
E, reduce the positive and negative pressure in the invar plate silo and made the distortion of silo body, increased the stability of silo.
Description of drawings
Accompanying drawing is that the utility model master cuts open figure (constructional drawing when the storehouse internal pressure is in normal condition).
Sequence number among the figure: 1. induction opening, 2. stage clip, 3. mandrel, 4. jam nut, 5. spring upper press cover, 6. cover plate, 7. air extractor vent 8. moves cover plate, 9. the seal ring housing screw, 10. block body, 11. engaging lugs, 12. block body and the affixed attaching screws of cover plate, 13. hinge, 14. engaging lugs, 15. jacket casings, 16. silo loam cake platform, 17. seal rings.
The specific embodiment
The utility model is described further will descend in conjunction with the embodiments (accompanying drawing):
As shown in Figure 1, steel silo positive and negative pressure safe release device of the present utility model comprise be fixedly mounted on the silo top and with the jacket casing 15 of silo intracavity inter-connection, on the upper port of jacket casing 15 by the pivotally attached mode cover be placed with diameter greater than jacket casing outside the air pressure of warp discharge adjustable cap; Described adjustable cap comprises the block body 10 of concave structure, is encapsulated in the cover plate 6 of block body bottom, is fixedly mounted on the seal ring 17 on the cover plate bottom surface, is positioned at the mobile cover plate 8 of seal ring 17 belows; The external diameter of described seal ring 17 is greater than the outer warp of jacket casing 15, and its internal diameter is greater than the external diameter of mobile cover plate 8; The external diameter of described mobile cover plate 8 is less than the interior warp of jacket casing 15; Be provided with a mandrel 3 that extends straight up in the centre of mobile cover plate 8, this mandrel 3 combines with cover plate 6 central shaft holes that are positioned at its top in the mode of running-fit, on the mandrel extension that is positioned at above cover plate 6 central shaft holes, stage clip 2 is installed by spring upper press cover 5, jam nut 4, the upper end of described stage clip 2 is inlaid in the annular deep gouge that spring upper press cover 5 lower surfaces process, and the lower end of this stage clip is inlaid in the annular deep gouge that processes around cover plate 6 central shaft hole upper surfaces; The periphery of described cover plate 6 is provided with the some induction openings 1 that are connected with atmosphere, and the middle part is provided with some air extractor vents 7 that cavity that connection is made of jointly the last plane of bottom surface, seal ring 17 inner ring surfaces and the mobile cover plate 8 of cover plate 6 is connected.
Say that more specifically air pressure described in the utility model discharges adjustable cap and discharges the engaging lug 14,11 of adjustable cap homonymy by being separately positioned on jacket casing 15 and air pressure, and hinge 13 combines.
Concrete construction features of the present utility model are as follows:
A. the mobile cover plate 8 described in the utility model is under normal condition, because of stage clip 2 affacts by on the spacing spring upper press cover 5 of jam nut 4, pulling mandrel 3 moves up along cover plate 6 central shaft holes, make that seal ring 17 is close on the plane on the mobile cover plate 8, with vent 7 sealings, avoided leaking of granular material effectively, reduced the waste of material and the pollution of environment.
B. the malleation in steel silo enters in jacket casing 15 chambeies of this device, and act on the lower plane of mobile cover plate 8 in this device, seal ring 17 lower planes are close on the last plane of mobile cover plate, positive pressure upwards promotes cover plate 6 simultaneously, and then drive whole air pressure and discharge adjustable cap overcomes adjustable cap self under the effect of malleation gravity, the rotation side direction is opened around the hinge axle center, barotropic gas in the steel silo is discharged to the external world, realize that malleation discharges in the silo, prevented the storehouse lid weld cracking that silo loam cake platform 16 causes because of malleation, reduce the distortion of steel silo interlock interface effectively, guaranteed the intensity of welding chamber weld seam.
C. mobile cover plate 8 described in the utility model is mounted on mobile cover plate 8 centers under the effect of negative pressure mandrel 3 moves down along cover plate 6 centre holes, stage clip 2 was compressed because of 5 effects of 4 times fixing spring upper press covers of mandrel 3 upper end locking nuts when mandrel 3 moved down, at this moment being close to seal ring 17 following mobile cover plates 8 leaves, outside air enters in the steel silo chamber by induction opening on the cover plate 61 and air extractor vent 7, reaches the purpose of the negative pressure in the balance steel silo chamber.Avoided the negative pressure in the invar plate silo like this and made the distortion of silo body top cover, increase silo stability, improved, prolonged the used life of steel silo, reduced the destruction that the steel silo body is caused simultaneously, prevented silo loam cake 16 weld crackings, guaranteed that steel silo is safe in utilization.
Claims (3)
1, a kind of steel silo positive and negative pressure safe release device, it is characterized in that: this device comprise be fixedly mounted on the silo top and with the jacket casing (15) of silo intracavity inter-connection, on the upper port of jacket casing (15) by the pivotally attached mode cover be placed with diameter greater than jacket casing outside the air pressure of warp discharge adjustable cap; Described adjustable cap comprises the block body (10) of concave structure, is encapsulated in the cover plate (6) of block body bottom, is fixedly mounted on the seal ring (17) on the cover plate bottom surface, is positioned at the mobile cover plate (8) of seal ring (17) below; The external diameter of described seal ring (17) is greater than the outer warp of jacket casing (15), and its internal diameter is greater than the external diameter of mobile cover plate (8); The external diameter of described mobile cover plate (8) is less than the interior warp of jacket casing (15); Be provided with a mandrel (3) that extends straight up in the centre of mobile cover plate (8), this mandrel (3) combines with cover plate (6) central shaft hole that is positioned at its top in the mode of running-fit, by spring upper press cover (5), jam nut (4) stage clip (2) is installed on the mandrel extension that is positioned at cover plate (6) central shaft hole top; The periphery of described cover plate (6) is provided with the some induction openings (1) that are connected with atmosphere, and the middle part is provided with some air extractor vents (7) that connection is connected by the common cavity that constitutes in the last plane of bottom surface, seal ring (17) inner ring surface and the mobile cover plate (8) of cover plate (6).
2, steel silo positive and negative pressure safe release device according to claim 1, it is characterized in that: described air pressure discharges adjustable cap by being separately positioned on the engaging lug (14) (11) of jacket casing (15) and air pressure release adjustable cap homonymy, and hinge (13) combines.
3, steel silo positive and negative pressure safe release device according to claim 1, it is characterized in that: the upper end of described stage clip (2) is inlaid in the annular deep gouge that spring upper press cover (5) lower surface processes, and the lower end of this stage clip is inlaid in the annular deep gouge that processes around cover plate (6) central shaft hole upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200691160U CN201144072Y (en) | 2008-01-23 | 2008-01-23 | Positive-pressure negative-pressure safe releasing device of steel silo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200691160U CN201144072Y (en) | 2008-01-23 | 2008-01-23 | Positive-pressure negative-pressure safe releasing device of steel silo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144072Y true CN201144072Y (en) | 2008-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200691160U Expired - Fee Related CN201144072Y (en) | 2008-01-23 | 2008-01-23 | Positive-pressure negative-pressure safe releasing device of steel silo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144072Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257877A (en) * | 2015-11-26 | 2016-01-20 | 北京斯孚笛科技有限公司 | Intelligent pressure relief device |
| CN106395183A (en) * | 2016-08-31 | 2017-02-15 | 大庆市让胡路区昊淼消防设备制造有限责任公司 | Storage tank multistage pressure relief device |
| CN106768596A (en) * | 2017-02-14 | 2017-05-31 | 山东省元丰节能装备科技股份有限公司 | The method of warehouse positive and negative pressure safety monitoring |
| CN107448653A (en) * | 2017-07-28 | 2017-12-08 | 江苏华洋新思路能源装备股份有限公司 | Nuclear power generating sets main steam isolation valve room relief panel |
| CN107458764A (en) * | 2017-09-18 | 2017-12-12 | 盐城方正医药科技有限公司 | A kind of storage device for Simvastatin |
| CN111299545A (en) * | 2020-04-10 | 2020-06-19 | 台州巨东精密铸造有限公司 | Negative-pressure resin sand casting mold and casting process thereof |
| CN115092528A (en) * | 2022-07-07 | 2022-09-23 | 中国工程物理研究院总体工程研究所 | High-overload-resistant valve through-wall sealing connection structure |
-
2008
- 2008-01-23 CN CNU2008200691160U patent/CN201144072Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257877A (en) * | 2015-11-26 | 2016-01-20 | 北京斯孚笛科技有限公司 | Intelligent pressure relief device |
| CN106395183A (en) * | 2016-08-31 | 2017-02-15 | 大庆市让胡路区昊淼消防设备制造有限责任公司 | Storage tank multistage pressure relief device |
| CN106768596A (en) * | 2017-02-14 | 2017-05-31 | 山东省元丰节能装备科技股份有限公司 | The method of warehouse positive and negative pressure safety monitoring |
| CN106768596B (en) * | 2017-02-14 | 2019-07-30 | 山东省元丰节能装备科技股份有限公司 | The method of warehouse positive and negative pressure safety monitoring |
| CN107448653A (en) * | 2017-07-28 | 2017-12-08 | 江苏华洋新思路能源装备股份有限公司 | Nuclear power generating sets main steam isolation valve room relief panel |
| CN107448653B (en) * | 2017-07-28 | 2019-08-02 | 江苏华洋新思路能源装备股份有限公司 | Nuclear power unit main steam isolation valve room relief panel |
| CN107458764A (en) * | 2017-09-18 | 2017-12-12 | 盐城方正医药科技有限公司 | A kind of storage device for Simvastatin |
| CN111299545A (en) * | 2020-04-10 | 2020-06-19 | 台州巨东精密铸造有限公司 | Negative-pressure resin sand casting mold and casting process thereof |
| CN115092528A (en) * | 2022-07-07 | 2022-09-23 | 中国工程物理研究院总体工程研究所 | High-overload-resistant valve through-wall sealing connection structure |
| CN115092528B (en) * | 2022-07-07 | 2024-04-02 | 中国工程物理研究院总体工程研究所 | High overload resistant valve through-wall sealing connection structure |
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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: 20081105 Termination date: 20170123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |