CN209852983U - Automatic exhaust valve with inner floating disc - Google Patents
Automatic exhaust valve with inner floating disc Download PDFInfo
- Publication number
- CN209852983U CN209852983U CN201920169485.5U CN201920169485U CN209852983U CN 209852983 U CN209852983 U CN 209852983U CN 201920169485 U CN201920169485 U CN 201920169485U CN 209852983 U CN209852983 U CN 209852983U
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- plate
- valve body
- apron
- closing plate
- cover
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- Expired - Fee Related
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- 238000007667 floating Methods 0.000 title claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 47
- 238000010030 laminating Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 abstract description 21
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model discloses an interior floating plate automatic exhaust valve, it mainly comprises the valve body and installs the exhaust subassembly in the valve body cavity intracavity, the exhaust subassembly mainly by the closing plate to and install getter device and expiratory device on the closing plate and constitute, the closing plate transversely install and open on valve body inside wall and closing plate and have two through-holes, getter device's apron installation covers the below of one of them through-hole, and expiratory device's apron installation covers in the top of another through-hole of closing plate, two apron all are provided with reset spring with the pin joint of closing plate. The utility model discloses simple structure, production and processing, use, maintenance are all very convenient, and its leakproofness of effectively having guaranteed interior floating plate has effectively prevented thereby the atmospheric pollution and the fluid loss that fluid volatilizees and cause, and its atmospheric pressure about the floating plate in can automatic balance, thereby effectively prevent that storage tank atmospheric pressure from crossing low or too high damage storage tank and interior floating plate, cause the incident.
Description
Technical Field
The utility model relates to a petroleum equipment field is an oil storage tank is with interior used discharge valve that can open automatically and close on floating disc particularly.
Background
In the field of petroleum or chemical liquid storage, gas often volatilizes in a liquid storage tank, and if the gas volatilizes into the atmosphere, atmospheric pollution and economic loss can be caused. Therefore, an inner floating disc is usually placed on the liquid level in the oil storage tank, floats on the liquid level of the oil storage tank and can float along with the up-down lifting of the oil, so that the inner floating disc always keeps covering on the surface of the oil, and the method is the simplest and economical method for reducing the volatilization of the oil and the evaporation loss of the oil.
Because the inner floating disc is in sealing contact with the oil in the storage tank, when the oil in the storage tank is sucked from the outside, the lowest point of the inner floating disc falling in the storage tank is higher than the lowest point of the oil which can fall, so when the inner floating disc reaches the lowest point, if the oil continues to fall, negative pressure is generated between the oil and the bottom of the inner floating disc; similarly, if the oil needs to be filled into the tank from the outside after reaching the lowest point, high pressure is gradually generated between the oil level and the bottom surface of the inner floating plate along with the rising of the oil. Whether the negative pressure is generated during descending or the high pressure is generated during oil injection, if the negative pressure or the high pressure is not eliminated in time, the internal floating disc and the storage tank are damaged after reaching a certain peak value, and serious safety accidents are caused in serious cases. In order to avoid this negative pressure or high pressure that appear in the use and damage equipment, current interior floating plate often adopts the form of division through-hole, open a intercommunication interior floating plate lower part space and atmospheric through-hole on including the floating plate promptly, but this through-hole is normally open the hole, it makes the leakproofness greatly reduced of interior floating plate, the produced a large amount of oil gas of fluid evaporation of interior floating plate below can volatilize through this through-hole always and discharge into the atmosphere, firstly very easily cause the incident, secondly seriously produced the atmospheric pollution, thirdly a large amount of volatilizing of fluid causes the fluid loss.
SUMMERY OF THE UTILITY MODEL
The utility model provides an oil storage tank is used on with interior floating plate, can be according to the automatic discharge valve who opens and close of pressure to solve the shortcoming and not enough that exist among the background art.
The utility model provides a technical problem adopt following technical scheme to realize:
an automatic exhaust valve with an internal floating disc is characterized by mainly comprising a cylindrical hollow valve body and an exhaust assembly arranged in a hollow cavity of the valve body, wherein the exhaust assembly mainly comprises a sealing plate, an air suction device and an air exhaling device which are arranged on the sealing plate, the sealing plate is transversely arranged on the inner side wall of the valve body and divides the hollow cavity of the valve body into an upper cavity and a lower cavity, the periphery of the sealing plate is hermetically connected with the inner side wall of the valve body, two symmetrical through holes for communicating the upper cavity and the lower cavity are formed in the sealing plate, the air suction device and the air exhaling device are both formed by a cover plate movably hinged on the sealing plate, a cover plate of the air suction device is arranged and covers below one through hole of the sealing plate, the side edge of the cover plate is hinged to the lower side surface of the sealing plate, and a cover, the side edge of this apron articulates in the side of going up of closing plate, and two apron can both be sealed with the closing plate side is leveled the laminating, the pin joint of two apron and closing plate all is provided with and makes the apron reply or keep its and the closing plate sealed reset spring of leveling the laminating, reset spring be the torsional spring or be in by tension state and both ends respectively with closing plate and apron connection's extension spring.
Right the utility model discloses, the upper end of valve body is provided with the valve gap, and the junction of valve gap and valve body is provided with the clearance, and two connecting plates that are used for being connected with interior floating plate are installed to the lateral wall symmetry of valve body.
To the utility model discloses, the apron size is greater than the size of through-hole on the closing plate, and covers the cover surface mounting that the through-hole covered at the apron and have the sealing washer to prevent that apron and closing plate laminating are inseparable and leak gas.
To the utility model discloses, two apron all form a complete set have a limiting plate, and the limiting plate is installed in the articulated point department of apron and closing plate for prevent that the apron from excessively opening.
Has the advantages that: 1. the utility model has simple structure, and is very convenient for production, processing, use and maintenance; 2. the utility model seals the two through holes from the upper and lower sides respectively through the two cover plates by the reset spring, thereby the through holes are closed under the normal state, the sealing performance of the inner floating plate under the normal state is effectively ensured, and the air pollution and the oil loss caused by the long-time volatilization of the oil are effectively prevented; 3. when negative pressure or high pressure is generated in the using process, air pressure difference can be formed on the upper side and the lower side of the cover plate, automatic opening and closing can be realized by utilizing the two cover plates with the air pressure difference, the air pressure above and below the inner floating disc is automatically balanced, and the phenomenon that the storage tank and the inner floating disc are damaged and safety accidents are caused due to the fact that the air pressure of the storage tank is too low or too high is effectively prevented.
Drawings
Fig. 1 is a schematic structural diagram of the present invention in an initial state;
FIG. 2 is a sectional view taken along line A-A of the present invention in an initial state;
FIG. 3 is a schematic view of the present invention in the working (inspiration and expiration) state;
fig. 4 is a schematic diagram of the hinge joint of the cover plate and the sealing plate when the return spring is a double torsion spring.
In the figure: 1-valve body, 2-sealing plate, 3-through hole, 4-cover plate of inhalation device, 5-cover plate of exhalation device, 6-hinge point, 7-reset spring, 8-valve cover, 9-gap, 10-connecting plate, 11-limiting plate, 12-shaft, 13-spring body and 14-extending body.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
referring to the attached drawings 1-4, an automatic exhaust valve with an inner floating disc mainly comprises a cylindrical hollow valve body 1 and an exhaust assembly arranged in a hollow cavity of the valve body, wherein the exhaust assembly mainly comprises a sealing plate 2, an air suction device and an air exhaling device which are arranged on the sealing plate, the sealing plate is transversely arranged on the inner side wall of the valve body and divides the hollow cavity of the valve body into an upper cavity and a lower cavity, the periphery of the sealing plate is hermetically connected with the inner side wall of the valve body, two symmetrical through holes 3 which are communicated with the upper cavity and the lower cavity are formed in the sealing plate, the air suction device and the air exhaling device are both formed by a cover plate which is movably hinged on the sealing plate, a cover plate 4 of the air suction device is arranged and covers below one through hole of the sealing plate, the side edge of the cover plate is hinged on the lower side surface of the sealing, the side edge of the cover plate is hinged on the upper side surface of the sealing plate, the two cover plates can be smoothly attached and sealed with the side surface of the sealing plate, and the hinged point 6 of the two cover plates and the sealing plate is provided with a reset spring 7 which enables the cover plate to return (after the cover plate is opened) or keep (when the cover plate is not opened) to be smoothly attached and sealed with the sealing plate.
In the specific implementation:
1. in the prior art, a return spring which enables a certain movable part to keep the original state or return to the original state is mature in technology, various in form, and most commonly used is a torsion spring or a tension spring. What this discharge valve reset spring adopted is extension spring or torsional spring: when the tension spring is adopted (as shown in 7 in the attached figure 3), two ends of the tension spring are respectively connected with the sealing plate and the cover plate, and the tension spring is in a stretched state when the cover plate covers the through hole in an initial state; when the torsion spring is adopted, in order to ensure the stable motion of the cover plate, the torsion spring is a double torsion spring (as shown in figure 4), the cover plate is hinged with the sealing plate through a shaft sleeve and a shaft connection (the hinged part of the cover plate is provided with the shaft sleeve, a shaft 12 is arranged on the sealing plate through a support seat), a spring body 13 of the double torsion spring is sleeved on the shaft from two ends, two extending bodies 14 at two ends of the spring body are buckled and pressed on the cover plate through spring elasticity, and in an initial state, the two cover plates are tightly buckled and covered on corresponding through holes from the upper side surface and the lower side surface respectively under.
2. The cover plate and the through hole can be in the shape of a circle or a square (usually a circle, as shown in the attached drawing), and the size of the cover plate is larger than that of the through hole in the sealing plate, so that the cover plate can completely cover the through hole; meanwhile, in order to prevent the cover plate from being not matched with the through hole tightly and having poor sealing effect, a sealing ring can be arranged on the covering surface of the cover plate covering the through hole, the sealing ring can be arranged around the through hole on the sealing plate and also can be arranged on the cover plate (a circle of groove can be formed on the corresponding mounting surface, and the sealing ring is clamped into the groove).
3. The upper end of the valve body is provided with a valve cover 8 to prevent sundries from falling into the valve body, a gap 9 is arranged at the joint of the valve cover and the valve body, the gap can be formed by opening a hole on the valve body (as shown in the attached drawing), or the joint of the valve cover and the valve body is not tightly matched, a butt seam is reserved, and the gap is used for communicating an upper chamber separated by a sealing plate in the valve body with the atmosphere, so that the 'air suction' and 'air expiration' of the exhaust valve are facilitated.
4. Two connecting plates 10 are symmetrically arranged on the outer side wall of the valve body, screw holes are formed in the connecting plates, and the automatic exhaust valve can be fixedly arranged on the inner floating disc through the connecting plates.
5. The two cover plates are matched with limiting plates 11 which are arranged at the hinged points of the cover plates and the sealing plates to prevent the cover plates from being excessively opened. The limiting plate shown in the attached drawing is a stand column with a stop block, and the stop block limits excessive opening of the cover plate. In specific implementation, other common limiting modes can be adopted.
6. When concrete production preparation, must guarantee the position and the height of pin joint, both guarantee that the apron can cover the through-hole completely, guarantee again that the apron can laminate sealedly completely with the closing plate when reverting horizontal position under reset spring's elasticity effect.
7. The pressure value when negative pressure or high pressure appear in the storage tank needs to be detected in advance to determine the elasticity value of the return spring, and the opening of the front cover plate of the equipment possibly damaged by the negative pressure or the high pressure is fully ensured. Generally, in the original state, on the premise that the reset spring can enable the cover plate to tightly buckle the through hole, the smaller the elastic force of the reset spring is, the better the elastic force is, and the more sensitive the exhaust valve is.
Use, working process and principle:
when the exhaust valve is needed to be used, the exhaust valve is arranged on the upper surface of the inner floating plate (the arrangement mode can be welding or screw connection and the like) according to the directions shown in the attached drawings through the connecting plates at the two sides of the exhaust valve, and the lower end cavity of the exhaust valve is communicated with the bottom of the inner floating plate.
As shown in the attached drawings 1 and 2, in a normal state (namely, an initial state), the oil level does not rise or fall, or when oil in the storage tank is sucked from the outside, the inner floating plate falls along with the falling of the oil level in the storage tank, the bottom of the inner floating plate is attached to the oil level, negative pressure cannot be generated, at the moment, the cover plate of the left air suction device and the two cover plates of the cover plate of the right air breathing device respectively cover the two through hole positions of the sealing plate from top to bottom under the elastic action of the reset spring, the through hole channels are closed, gas volatilized by the oil cannot be discharged from the through hole channels, the sealing performance of the inner floating plate is ensured, and the oil is effectively prevented from volatilizing into the atmosphere to cause atmospheric pollution and loss of the oil.
When the inner floating disc descends to the lowest point along with oil, if the oil continuously descends, the oil level is peeled from the bottom of the inner floating disc, negative pressure is generated between the oil level and the bottom of the inner floating disc, the negative pressure acts on the lower cavity of the exhaust valve, the negative pressure value is gradually increased along with the descending of the oil level, and if the negative pressure value is not eliminated in time, the inner floating disc and the storage tank are damaged. At this time, as shown in fig. 3, when the negative pressure value reaches a certain value, that is, the downward acting force generated by the air pressure difference formed between the upper and lower cavities of the valve body (the upper cavity is at atmospheric pressure, and the lower cavity is at negative pressure) is greater than the upward force of the return spring acting on the cover plate of the left air suction device, the left air suction device starts to operate, the cover plate of the left air suction device is pushed away downward along the hinge point, the air suction through hole channel on the left side is opened (at this time, the cover plate of the right air suction device is still tightly buckled and pressed on the through hole on the right side, and the through hole channel is still in a closed state), and at the same time, the external atmosphere enters the lower cavity from the upper cavity of the valve body through the left through hole, so. After the air pressure is balanced about getting into the space of interior floating plate below when outside air makes, the apron of the getter device on the left side restores initial condition again under reset spring's pulling force effect, and the through-hole on the left side is lived to sealed lid, prevents that oil gas from volatilizing.
After the oil level drops to the lowest point, a large space can exist between the oil level and the bottom surface of the inner floating plate, the pressure of the space is basically equal to the atmospheric pressure under the action of the left air suction device, the cover plates of the air suction device and the air exhaust device are both in a closed state, and the residual oil in the storage tank does not volatilize even if the air suction device is not used for a long time. When oil needs to be injected into the oil tank, along with the injection of the oil, the oil level gradually rises, the space between the oil level and the bottom surface of the inner floating plate is gradually compressed and reduced, the air pressure in the space gradually rises (if the air pressure is not balanced in time, along with the gradual rise of the oil level, ultrahigh pressure is formed between the oil level and the bottom surface of the inner floating plate, the inner floating plate and the storage tank are possibly seriously damaged), when the high pressure between the oil level and the bottom surface of the inner floating plate reaches a certain value, the acting force of the pressure difference between the air pressure and the upper cavity of the valve body on the cover plate of the right-side exhalation device is larger than the acting force of the reset spring buckling and pressing the cover plate, the right-side exhalation device starts to work, the cover plate of the right-side exhalation device is upwards opened under the action of the lower pressure, the left-side exhalation through hole channel is tightly opened (at the moment, the, high pressure formed between the oil liquid level and the bottom surface of the inner floating disc is released outwards through the through hole on the right side and is quickly balanced with atmospheric pressure, and the inner floating disc and the storage tank are effectively prevented from being damaged by the high pressure. After the high pressure is released, the cover plate returns to the initial state under the action of the tension of the return spring, and the right through hole is sealed to prevent oil gas from volatilizing.
The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. An automatic exhaust valve with an internal floating disc is characterized by mainly comprising a cylindrical hollow valve body and an exhaust assembly arranged in a hollow cavity of the valve body, wherein the exhaust assembly mainly comprises a sealing plate, an air suction device and an air exhaling device which are arranged on the sealing plate, the sealing plate is transversely arranged on the inner side wall of the valve body and divides the hollow cavity of the valve body into an upper cavity and a lower cavity, the periphery of the sealing plate is hermetically connected with the inner side wall of the valve body, two through holes which are symmetrical and are communicated with the upper cavity and the lower cavity are formed in the sealing plate, the air suction device and the air exhaling device are both formed by a cover plate which is movably hinged on the sealing plate, a cover plate of the air suction device is arranged and covers below one through hole of the sealing plate, the side edge of the cover plate is hinged on the lower side surface of, the side edge of this apron articulates in the side of going up of closing plate, and two apron can both be sealed with the closing plate side is leveled the laminating, the pin joint of two apron and closing plate all is provided with and makes the apron reply or keep its and the closing plate sealed reset spring of leveling the laminating, reset spring be the torsional spring or be in by tension state and both ends respectively with closing plate and apron connection's extension spring.
2. The automatic exhaust valve with the internal floating disc as claimed in claim 1, wherein a valve cover is arranged at the upper end of the valve body, a gap is arranged at the joint of the valve cover and the valve body, and two connecting plates for connecting with the internal floating disc are symmetrically arranged on the outer side wall of the valve body.
3. The automatic exhaust valve with internal floating disk as claimed in claim 1, wherein the size of said cover plate is larger than the size of said through hole on said sealing plate, and a sealing ring is installed on the covering surface of said cover plate covering said through hole.
4. The automatic exhaust valve with internal floating disk as claimed in claim 1, wherein said two cover plates are each provided with a limiting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920169485.5U CN209852983U (en) | 2019-01-31 | 2019-01-31 | Automatic exhaust valve with inner floating disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920169485.5U CN209852983U (en) | 2019-01-31 | 2019-01-31 | Automatic exhaust valve with inner floating disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209852983U true CN209852983U (en) | 2019-12-27 |
Family
ID=68931537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920169485.5U Expired - Fee Related CN209852983U (en) | 2019-01-31 | 2019-01-31 | Automatic exhaust valve with inner floating disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209852983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625643A (en) * | 2019-01-31 | 2019-04-16 | 湖南省上池环保科技有限公司 | A kind of interior floating plate automatic exhaust steam valve |
| CN115520526A (en) * | 2022-11-24 | 2022-12-27 | 湖南省上池环保科技有限公司 | Immersion type double-disk stainless steel Chu Guanna floating disk |
-
2019
- 2019-01-31 CN CN201920169485.5U patent/CN209852983U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625643A (en) * | 2019-01-31 | 2019-04-16 | 湖南省上池环保科技有限公司 | A kind of interior floating plate automatic exhaust steam valve |
| CN115520526A (en) * | 2022-11-24 | 2022-12-27 | 湖南省上池环保科技有限公司 | Immersion type double-disk stainless steel Chu Guanna floating disk |
| CN115520526B (en) * | 2022-11-24 | 2023-02-10 | 湖南省上池环保科技有限公司 | Immersion type double-disk stainless steel storage tank inner floating disk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |