CN107555389B - Pneumatic liquid discharge device - Google Patents
Pneumatic liquid discharge device Download PDFInfo
- Publication number
- CN107555389B CN107555389B CN201710756203.7A CN201710756203A CN107555389B CN 107555389 B CN107555389 B CN 107555389B CN 201710756203 A CN201710756203 A CN 201710756203A CN 107555389 B CN107555389 B CN 107555389B
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- liquid
- pipeline
- air
- valve
- control module
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- 239000007788 liquid Substances 0.000 title claims abstract description 165
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims 3
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 6
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/36—Arrangements of flow- or pressure-control valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/72—Devices for applying air or other gas pressure for forcing liquid to delivery point
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Abstract
The invention provides an air pressure liquid draining device which comprises a sealing tank, a liquid inlet pipeline, an air inlet pipeline, a liquid draining pipeline and an air exhausting pipeline, wherein the liquid inlet pipeline, the air inlet pipeline, the liquid draining pipeline and the air exhausting pipeline are all communicated with the inside of the sealing tank in a mode of penetrating through the internal and external environments of the sealing tank, and the air pressure liquid draining device further comprises a liquid return gas circuit, one end of the liquid return gas circuit is connected with the air inlet pipeline, and the other end of the liquid return gas circuit is connected with the liquid draining pipeline. The invention can conveniently recycle the residual liquid in the liquid discharge pipeline and avoid the escape of a large amount of volatile gas caused by overlarge air pressure difference at the two ends of the liquid discharge pipeline.
Description
Technical Field
The invention relates to the technical field of pneumatic liquid draining devices, in particular to a pneumatic liquid draining device for sealing volatile liquid in a tank.
Background
The existing air pressure liquid discharge device generally adopts a structural design that a liquid outlet is directly connected with the outside atmosphere, and if the air pressure liquid discharge device is applied to volatile liquid, the loss and the waste of the liquid can be caused by the fact that the liquid volatilizes from a high-pressure sealed tank to a low-pressure liquid outlet; and after the liquid is discharged, no residual liquid in the pipeline, especially in the liquid outlet, is recovered or cleaned, so that the liquid is wasted. In addition, the liquid accumulated in the liquid outlet can cause precipitation, crystallization or condensation due to evaporation or absorption of water, so that the liquid outlet is blocked, the maintenance frequency of the device is too high, and the production efficiency is low; if the liquid is corrosive, damage to the inner wall of the liquid discharge pipeline and shortening of the service life can be caused, and finally, the pneumatic liquid discharge device cannot be used normally.
Disclosure of Invention
In view of the above problems, the present invention is to provide an air pressure liquid draining device, so as to solve the problems of the prior art that volatile liquid is easy to volatilize, and the liquid outlet is easy to be blocked and corroded.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
the utility model provides an atmospheric pressure flowing back device, includes seal pot, feed liquor pipeline, air inlet pipeline, flowing back pipeline and exhaust pipeline, the feed liquor pipeline the air inlet pipeline the flowing back pipeline and the exhaust pipeline all are linked together with the seal pot is inside through the mode that link up the inside and outside environment of seal pot, its characterized in that still includes the liquid return gas circuit, the one end of liquid return gas circuit with the air inlet pipeline links to each other, the other end of liquid return gas circuit with the flowing back pipeline links to each other.
Preferably, one end of the liquid return air path is connected with the air inlet pipeline through a tee joint.
Preferably, the other end of the liquid return air channel is connected with a liquid outlet of the liquid discharge pipeline.
Preferably, the liquid return air passage is provided with a one-way valve near the liquid outlet, and an opening of the one-way valve is arranged towards the liquid discharge pipeline.
Preferably, the liquid inlet pipeline, the exhaust pipeline, the part of the air inlet pipeline between one end of the liquid return pipeline and the outer wall of the sealing tank, the part of the liquid return pipeline close to the tee joint and the liquid discharge pipeline are respectively provided with a first two-way valve, an air valve, a second two-way valve, a third two-way valve and a fourth two-way valve.
Preferably, the control device is further included, and the control device includes:
the control module is electrically connected with the first bidirectional valve, the air valve, the second bidirectional valve, the third bidirectional valve and the fourth bidirectional valve and is used for controlling the opening and closing of the valves;
the first air pressure sensing device is electrically connected with the control module, is arranged at a part of the air inlet pipeline between one end of the liquid return air channel and the second bidirectional valve, is positioned outside the air inlet pipeline and is used for sensing real-time air pressure in the air inlet pipeline and transmitting signals to the control module; the method comprises the steps of,
the second air pressure sensing device is electrically connected with the control module, is arranged at the top of the sealed tank, penetrates through the sealed tank, is positioned outside the sealed tank and is used for displaying air pressure data, and the sensing end of the second air pressure sensing device is positioned in the sealed tank and is used for sensing real-time air pressure in the sealed tank and transmitting signals to the control module; the method comprises the steps of,
the liquid level sensing device is electrically connected with the control module and is arranged in the sealed tank and used for sensing the real-time liquid level in the sealed tank and transmitting signals to the control module.
Preferably, the liquid discharge pipeline and the liquid return pipeline are both prolonged by flexible pipes at one side close to the liquid outlet.
Compared with the prior art, the invention has at least the following beneficial effects: in the liquid discharge process, when the air pressure in the air inlet pipeline is excessively large or the air pressure is excessively large, the control module can simultaneously close the second two-way valve on the air inlet pipeline and the fourth two-way valve on the air outlet pipeline, so that a large amount of volatile gas can be prevented from escaping due to the excessively large air pressure difference at the two ends of the liquid discharge pipeline, and the waste of liquid is reduced; when the residual liquid in the liquid discharge pipeline is required to be recovered, the control module firstly closes the second bidirectional valve on the air inlet pipeline, then opens the third bidirectional valve on the liquid return pipeline, and keeps the fourth bidirectional valve on the liquid discharge pipeline in an open state, so that after the liquid discharge is finished, the gas in the air inlet pipeline enters the liquid discharge pipeline through the liquid return pipeline, and the residual liquid in the liquid discharge pipeline can flow back to the sealing tank in an air inlet mode, and the solidification of the residual liquid is prevented from blocking the liquid discharge pipeline.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter particularly pointed out. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and attainments together with a more complete understanding of the invention will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a schematic structural view of another embodiment of the present invention.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the pneumatic drainage device provided by the invention comprises a sealing tank 1, a liquid inlet pipeline 2, an air inlet pipeline 3, a drainage pipeline 4, an exhaust pipeline 5 and a liquid return pipeline 6. The sealing gasket 7 is installed at the top of the sealing tank 1, and the liquid inlet pipeline 2, the air inlet pipeline 3, the liquid discharge pipeline 4 and the air exhaust pipeline 5 are communicated with the interior 1 of the sealing tank in a mode of penetrating through the sealing gasket 7. In addition, the top of the sealed pot 1 and the tube body of the sealed pot 1 are integrally formed to form a closed space, and the liquid inlet pipeline 2, the air inlet pipeline 3, the liquid discharge pipeline 4 and the air exhaust pipeline 5 are communicated with the interior 1 of the sealed pot 1 in a manner of penetrating through the top of the sealed pot 1. One end of the liquid return air path 6 is connected with the air inlet pipeline 3, and specifically, one end of the liquid return air path 6 is communicated with the air inlet pipeline 3 through a tee joint 8; the other end of the liquid return air path 6 is connected with the liquid discharge pipeline 4, preferably the other end of the liquid return air path 6 is communicated with a liquid outlet 40 on the liquid discharge pipeline 4, and in order to prevent liquid in the liquid discharge pipeline 4 from flowing back into the liquid return air path 6, a one-way valve 13 is arranged at the position, close to the liquid outlet 40, of the liquid return air path 6, and an opening of the one-way valve 13 is arranged towards the liquid outlet 40. In addition, in order to facilitate the timely control of the device, a first bi-directional valve 9, a gas valve 10, a second bi-directional valve 11, a third bi-directional valve 12 and a fourth bi-directional valve 14 are respectively arranged at the part of the liquid inlet pipeline 2, the gas outlet pipeline 5, the gas inlet pipeline 3 between the tee joint 8 and the sealing gasket 7, the part of the liquid return pipeline 6 close to the tee joint 8 and the liquid discharge pipeline 4. Referring to fig. 2, in order to facilitate the normal use of the pneumatic drainage device in various environments, flexible hoses 19 may be used to extend the sides of the drainage tube 4 and the return tube 6 near the liquid outlet 40.
The air pressure liquid draining device also comprises a control device. The control device comprises a control module 15, a first air pressure sensing device 16, a second air pressure sensing device 17 and a liquid level sensing device 18. The control module 15 is electrically connected to the first 9, gas 10, second 11, third 12 and fourth 14 bi-directional valves for controlling the opening and closing of these valves.
The first air pressure sensing device 16 is electrically connected with the control module 15, the first air pressure sensing device 16 is arranged on a part of the air inlet pipeline 3 between the tee joint 8 and the second bidirectional valve 11, a display for displaying air pressure data is arranged outside the air inlet pipeline 3, a sensing end is arranged in the air inlet pipeline 3, and the first air pressure sensing device 16 is used for sensing real-time air pressure in the air inlet pipeline 3 and transmitting signals to the control module 15. The second air pressure sensing device 17 is also electrically connected with the control module 15, the second air pressure sensing device 17 is mounted at the top of the sealed tank 1 and penetrates through the sealed tank 1, a display for displaying air pressure data is located outside the sealed tank 1, a sensing end of the display is located in the sealed tank 1, and the second air pressure sensing device 17 is used for sensing real-time air pressure in the sealed tank 1 and transmitting signals to the control module 15. The liquid level sensor 18 is installed on the part of the liquid inlet pipeline 2 located in the sealed tank 1, and is used for sensing the real-time liquid level in the sealed tank 1 and transmitting signals to the control module 15, and the control module 15 controls the opening and closing of the first bidirectional valve 9, the air valve 10, the second bidirectional valve 11, the third bidirectional valve 12 and the fourth bidirectional valve 14 according to the liquid level signals transmitted in real time.
When the sealed tank 1 is filled with liquid, the control module 15 rotates the second bi-directional valve 11 of the air inlet pipeline 3 to the closed position, rotates the third bi-directional valve 12 of the liquid return pipeline 6 to the closed position, then rotates the air valve 10 of the air exhaust pipeline 5 to the open position, confirms that the fourth bi-directional valve 14 of the liquid discharge pipeline 4 is rotated to the closed position, then rotates the first bi-directional valve 9 of the liquid inlet pipeline 2 to the open position, and injects the liquid into the sealed tank 1 from the liquid inlet pipeline 2. When the data transmitted to the control module 15 by the liquid level sensing device 18 indicate that the liquid level in the sealed tank 1 reaches the controlled height, the control module 15 rotates the first bi-directional valve 9 on the liquid inlet pipeline 2 to the closed position, and rotates the air valve 10 of the air exhaust pipeline 5 and the fourth bi-directional valve 14 of the liquid discharge pipeline 4 to the closed position, so that the liquid inlet in the sealed tank 1 is stopped.
When the sealed pot 1 is drained, the control module 15 rotates the second two-way valve 11 of the air inlet pipeline 3 to the open position, and rotates the fourth two-way valve 14 of the drain pipeline 4 to the open position, so that the sealed pot 1 starts draining. During the liquid discharge process, when the data transmitted to the control module 15 by the first air pressure sensing device 16 show that the peak value of the air pressure value fluctuation in the air inlet pipeline 3 is higher than the upper limit value or the valley value is lower than the lower limit value or the speed of the air pressure value fluctuation is higher than the threshold value, the control module 15 rotates the second two-way valve 11 of the air inlet pipeline 3 to the closed position, then rotates the fourth two-way valve 14 of the liquid discharge pipeline 4 to the closed position, stops liquid discharge, and then rotates the third two-way valve 12 of the liquid return pipeline 6 to the open position. If the data transmitted to the control module 15 by the second air pressure sensing device 17 shows that the pre-warning value of the air pressure is exceeded, the control module 15 also rotates the air valve 10 of the air exhaust pipeline 5 to the open position to exhaust the sealed tank 1, after the data transmitted to the control module 15 by the first air pressure sensing device 16 shows that the air pressure value in the air intake pipeline 3 is stable, and the data transmitted to the control module 15 by the second air pressure sensing device 17 is lower than the pre-warning value, the control module 15 firstly confirms that the air valve 10 of the air exhaust pipeline 5 has been rotated to the closed position, simultaneously rotates the second bi-directional valve 11 of the air intake pipeline 3 to the open position, rotates the fourth bi-directional valve 14 of the liquid discharge pipeline 4 to the open position, and rotates the third bi-directional valve 12 of the liquid return pipeline 6 to the closed position to continue liquid discharge.
After the liquid discharge of the sealed tank 1 is finished, the control module 15 does not receive a new operation command within a certain time, namely, the control module firstly confirms that the fourth bi-directional valve 14 of the liquid discharge pipeline 4 is rotated to the open position, then automatically rotates the second bi-directional valve 11 of the air inlet pipeline 3 to the closed position, and rotates the third bi-directional valve 12 of the liquid return pipeline 6 to the open position, so that residual liquid on the inner wall of the liquid discharge pipeline 4 and the liquid outlet 40 is returned to the sealed tank 1. When the difference between the air pressure data transmitted to the control module 15 by the first air pressure sensing device 16 and the air pressure data transmitted to the control module 15 by the second air pressure sensing device 17 is smaller than a predetermined value, the control module 12 further rotates the air valve 10 of the air exhaust pipeline 5 to the open position, so as to accelerate the liquid return process.
After the liquid return of the sealed tank 1 is finished, the control module 15 does not receive a new operation command within a certain time, namely, automatically rotates the third bi-directional valve 12 of the liquid return air circuit 6 to the closed position, confirms that the air valve 10 of the air exhaust pipeline 5 has rotated to the closed position, rotates the second bi-directional valve 11 of the air inlet pipeline 3 to the open position, rotates the first bi-directional valve 9 of the liquid inlet pipeline 2 to the open position, and discharges the liquid to the liquid source through the liquid inlet pipeline 2, so as to recover the liquid.
The pneumatic drainage device according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the air pressure drainage device of the present invention as set forth above without departing from the spirit of the invention. Accordingly, the scope of the invention should be determined from the following claims.
Claims (4)
1. The pneumatic liquid draining device comprises a sealing tank, a liquid inlet pipeline, an air inlet pipeline, a liquid draining pipeline and an air exhausting pipeline, wherein the liquid inlet pipeline, the air inlet pipeline, the liquid draining pipeline and the air exhausting pipeline are all communicated with the inside of the sealing tank in a manner of penetrating through the internal and external environments of the sealing tank,
one end of the liquid return air path is connected with the air inlet pipeline through a tee joint,
the other end of the liquid return air channel is connected with a liquid outlet of the liquid discharge pipeline,
the liquid inlet pipeline, the exhaust pipeline, a part between the tee joint of the air inlet pipeline and the outer wall of the sealing tank, the liquid return pipeline and the liquid discharge pipeline are respectively provided with a first two-way valve, an air valve, a second two-way valve, a third two-way valve and a fourth two-way valve, and the liquid inlet pipeline, the air outlet pipeline and the liquid discharge pipeline also comprise a control device, wherein the control device comprises:
the control module is electrically connected with the first bidirectional valve, the air valve, the second bidirectional valve, the third bidirectional valve and the fourth bidirectional valve and is used for controlling the opening and closing of the valves;
the first air pressure sensing device is electrically connected with the control module and is used for sensing real-time air pressure in the air inlet pipeline and transmitting signals to the control module; the method comprises the steps of,
the second air pressure sensing device is electrically connected with the control module and is used for sensing the real-time air pressure in the sealed tank and transmitting a signal to the control module; the method comprises the steps of,
the liquid level sensing device is electrically connected with the control module and is arranged in the sealed tank and used for sensing the real-time liquid level in the sealed tank and transmitting signals to the control module,
when the data transmitted to the control module by the first air pressure sensing device shows that the peak value of the air pressure value fluctuation in the air inlet pipeline is higher than the upper limit value or the valley value is lower than the lower limit value or the speed of the air pressure value fluctuation is higher than the threshold value in the liquid discharging process, the control module firstly closes the second bidirectional valve of the air inlet pipeline, then closes the fourth bidirectional valve of the liquid discharging pipeline, stops liquid discharging, and then opens the third bidirectional valve of the liquid return pipeline; if the data transmitted to the control module by the second air pressure sensing device show that the early warning value of the air pressure is exceeded, the control module also opens an air valve of the exhaust pipeline to exhaust the sealing tank, and after the data transmitted to the control module by the first air pressure sensing device show that the air pressure value in the air inlet pipeline is stable and the data transmitted to the control module by the second air pressure sensing device is lower than the early warning value, the control module firstly confirms that the air valve of the exhaust pipeline is closed, simultaneously opens a second two-way valve of the air inlet pipeline, opens a fourth two-way valve of the liquid discharge pipeline, closes a third two-way valve of the liquid return pipeline, and continuously discharges liquid;
after the liquid discharge of the sealed tank is finished, the control module firstly confirms that the fourth bi-directional valve of the liquid discharge pipeline is opened under the condition that no new operation command exists, then closes the second bi-directional valve of the air inlet pipeline, opens the third bi-directional valve of the liquid return pipeline, and returns residual liquid on the inner wall of the liquid discharge pipeline and the liquid outlet to the sealed tank.
2. The pneumatic drainage device of claim 1, wherein the liquid return air passage is provided with a one-way valve near the liquid outlet, and an opening of the one-way valve is arranged towards the drainage pipeline.
3. The pneumatic drain device of claim 1, further comprising a control device, the control device comprising:
the control module is electrically connected with the first bidirectional valve, the air valve, the second bidirectional valve, the third bidirectional valve and the fourth bidirectional valve and is used for controlling the opening and closing of the valves;
the first air pressure sensing device is arranged on the part of the air inlet pipeline between one end of the liquid return air path and the second bidirectional valve, a display for displaying air pressure data is arranged outside the air inlet pipeline, the sensing end is arranged in the air inlet pipeline,
the second air pressure sensing device is arranged at the top of the sealing tank and penetrates through the sealing tank, a display for displaying air pressure data is arranged outside the sealing tank, and the sensing end of the second air pressure sensing device is arranged in the sealing tank.
4. The pneumatic drain device of claim 1, wherein the drain line and the return line are each elongated by a flexible tube on a side adjacent the outlet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756203.7A CN107555389B (en) | 2017-08-29 | 2017-08-29 | Pneumatic liquid discharge device |
| PCT/CN2017/104158 WO2019041422A1 (en) | 2017-08-29 | 2017-09-29 | Air pressure type liquid discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756203.7A CN107555389B (en) | 2017-08-29 | 2017-08-29 | Pneumatic liquid discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107555389A CN107555389A (en) | 2018-01-09 |
| CN107555389B true CN107555389B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710756203.7A Active CN107555389B (en) | 2017-08-29 | 2017-08-29 | Pneumatic liquid discharge device |
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| Country | Link |
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| CN (1) | CN107555389B (en) |
| WO (1) | WO2019041422A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019041422A1 (en) | 2019-03-07 |
| CN107555389A (en) | 2018-01-09 |
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