CN219101736U - Device for generating negative pressure by positive pressure - Google Patents
Device for generating negative pressure by positive pressure Download PDFInfo
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- CN219101736U CN219101736U CN202320118228.5U CN202320118228U CN219101736U CN 219101736 U CN219101736 U CN 219101736U CN 202320118228 U CN202320118228 U CN 202320118228U CN 219101736 U CN219101736 U CN 219101736U
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- negative pressure
- hollow container
- air bag
- channel
- positive pressure
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Abstract
The utility model provides a device for generating negative pressure by positive pressure, which comprises a hollow container, a sealing plug and an elastic air bag, wherein the sealing plug is matched and sealed with an opening at the front end of the hollow container, and is provided with an air bag gas channel communicated with the elastic air bag in the hollow container; the hollow container wall is provided with a cavity exhaust channel and a negative pressure channel, and the air bag gas channel, the cavity exhaust channel and the negative pressure channel are provided with valves for controlling on-off. The device for generating negative pressure by positive pressure can generate negative pressure by positive pressure for use, and brings convenience to production and life. Meanwhile, the gas discharged by compression in the hollow container and the gas discharged by deflation of the elastic air bag can be further utilized according to the needs, so that energy waste is reduced.
Description
Technical Field
The utility model relates to the technical field of negative pressure generating devices, in particular to a device for generating negative pressure by positive pressure.
Background
In production and life, a situation that negative pressure is needed is often encountered. Because of frequency of use and cost, we will not be ready for use the negative pressure device at any time. Compared with the prior art, the positive pressure device is more common and commonly used, if the positive pressure generated by the positive pressure device is used for generating the negative pressure, the negative pressure can be conveniently obtained through the positive pressure device, a special negative pressure device is not required to be purchased, the cost can be reduced, and the requirements of energy conservation and consumption reduction are met.
Based on the defects, if the positive pressure for the device is designed to generate negative pressure, the purchase cost of the negative pressure device can be reduced, and convenience is brought to production and life.
Disclosure of Invention
The utility model provides a device for generating negative pressure by positive pressure, which can generate negative pressure by positive pressure for use, avoids separately purchasing the negative pressure device and brings convenience to production and life.
In order to achieve the technical purpose and achieve the technical effect, the utility model solves the problems through the following technical scheme:
the device for generating negative pressure by positive pressure comprises a hollow container, a sealing plug and an elastic air bag, wherein the sealing plug is matched and sealed with an opening at the front end of the hollow container, and an air bag gas channel is formed in the sealing plug and communicated with the elastic air bag in the hollow container; the hollow container wall is provided with a cavity exhaust channel and a negative pressure channel, and the air bag gas channel, the cavity exhaust channel and the negative pressure channel are provided with valves for controlling on-off.
In the scheme, firstly, the air channel of the air bag and the exhaust channel of the cavity are opened, the negative pressure channel is closed, the positive pressure device is connected with the positive pressure channel for inputting positive pressure air, the elastic air bag is inflated and compresses air in the hollow container, at the moment, the air in the elastic air bag and the hollow container is positive pressure, the air in the hollow container is exhausted from the exhaust channel of the cavity, and the exhausted air can be used according to requirements. And then closing the cavity exhaust channel to close the inner cavity of the hollow container, opening the positive pressure channel to deflate the elastic air bag, forming a certain negative pressure in the hollow container, and connecting the device with the negative pressure channel when the negative pressure is used.
Further, the plug is provided with a connecting thread corresponding to the hollow container, and the plug is connected with the opening of the hollow container through the thread and is provided with a sealing gasket.
Furthermore, the hollow container is a transparent shell made of plastic, and the elastic air bag is made of rubber materials with surface tension.
The utility model has the following beneficial effects:
the device for generating negative pressure by positive pressure can generate negative pressure by utilizing the input positive pressure, avoids purchasing the negative pressure device independently, reduces the purchase and storage cost of the device, better meets the requirements, and brings convenience to production and life.
The air in the hollow container is compressed by the inflation and expansion of the elastic air bag, and the air discharged by the compression and the deflation of the elastic air bag in the hollow container can be further utilized according to the requirement. Therefore, the device can generate a negative pressure space in one working cycle, and two positive pressure gases generated by the inflation of the elastic air bag and the compression of the hollow container can be further utilized, so that the energy conservation is facilitated.
Drawings
FIG. 1 is a schematic diagram of a device for generating negative pressure from positive pressure;
FIG. 2 (a) is a schematic diagram of an initial state;
FIG. 2 (b) is a schematic view of the inflated state of the elastic air bag;
FIG. 2 (c) is a schematic view showing a state of negative pressure generation in the hollow container;
fig. 2 (d) is a schematic diagram of the negative pressure use state.
Drawing number identification: 1. hollow container, 2, sealing plug, 3, elastic air bag, 4, air bag gas channel, 5, cavity exhaust channel, 6, negative pressure channel, 7, valve, 8 and sealing gasket.
Detailed Description
The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The specific embodiments described herein are to be considered in an illustrative sense only and are not intended to limit the utility model.
The device for generating negative pressure by positive pressure according to the present embodiment, as shown in fig. 1, comprises a hollow container 1, a closure plug 2, an elastic balloon 3, a valve 7 and a sealing gasket 8. The hollow container 1 is a transparent bottle body formed by hard plastics, the sealing plug 2 is detachably connected to the bottle mouth of the hollow container 1 through threads, and the sealing gasket 8 is arranged between the sealing plug 2 and the bottle mouth in a gasket mode to strengthen sealing.
The elastic balloon 3 is placed in the hollow container 1 and is made of a rubber material with surface tension, and the elastic balloon 3 can expand and compress the gas in the hollow container 1 when inflated. The sealing plug 2 is provided with an air bag air passage 4 and is connected into the elastic air bag 3, so that the elastic air bag 3 can be inflated and deflated. The cavity exhaust channel 5 and the negative pressure channel 6 are arranged at one end of the hollow container 1 opposite to the bottle mouth, and the cavity exhaust channel 5 and the negative pressure channel 6 are communicated with the cavity of the hollow container 1. The air bag gas channel 4, the cavity exhaust channel 5 and the negative pressure channel 6 are provided with valves 7 to control the on-off of the gas.
When the device described in this embodiment is used to generate negative pressure, as shown in fig. 2:
1. in the initial state, the airbag gas channel 4 and the cavity exhaust channel 5 are opened and are in an opened state, the negative pressure channel is closed 6 is closed, and the gas state in the device is shown in fig. 2 (a).
2. In the inflated state, the elastic air bag 3 is inflated through the air bag gas channel 4, the elastic air bag 3 is inflated to squeeze the gas in the cavity of the hollow container 1, and at the moment, the air pressure P in the elastic air bag 3 is equal to the air pressure P 1 And the air pressure P in the hollow container 1 2 At positive pressure, the chamber gas is exhausted from the chamber exhaust passage 5, as shown in fig. 2 (b). The gas exhausted from the exhaust channel 5 can be connected to corresponding equipment to further utilize the positive pressure to apply work.
3. In the negative pressure generation state, the cavity of the hollow container 1 is closed by closing the cavity exhaust channel 5 and the negative pressure channel 6, the air bag gas channel 4 is opened to deflate the elastic air bag 1, and the air pressure P in the cavity of the hollow container 1 is generated when the air bag 1 deflates 3 A sub-atmospheric pressure builds up to a negative pressure as shown in figure 2 (c). The gas exhausted by the air release of the elastic air bag 1 can be connected into corresponding equipment, and positive pressure is further utilized to apply work.
4. When the negative pressure is used in the cavity of the hollow container 1, equipment needing to use the negative pressure is communicated with the negative pressure channel 6 to obtain the negative pressure, the cavity sucks gas to consume the negative pressure, the negative pressure in the cavity gradually reaches the atmospheric pressure, and the elastic air bag 1 is further contracted into a natural non-inflated state, as shown in the figure 2 (d).
According to the device for generating negative pressure by positive pressure, the size and the scale of the hollow container 1 and the elastic air bag 3 can be set according to the use environment and the requirements, so that the device can adapt to the requirements of negative pressure under different conditions.
The embodiments of the present utility model are described in detail above with reference to the drawings, but the present utility model is not limited to the described embodiments. Many changes, modifications, substitutions and alterations are possible to those embodiments without departing from the spirit and scope of the present utility model.
Claims (3)
1. The device for generating negative pressure by positive pressure is characterized in that: the sealing device comprises a hollow container (1), a sealing plug (2) and an elastic air bag (3), wherein the sealing plug (2) is matched and sealed with an opening at the front end of the hollow container (1), and an air bag gas channel (4) is formed in the sealing plug (2) and is communicated with the elastic air bag (3) in the hollow container (1);
the wall body of the hollow container (1) is provided with a cavity exhaust channel (5) and a negative pressure channel (6), and the air bag gas channel (4), the cavity exhaust channel (5) and the negative pressure channel (6) are provided with valves (7) for controlling on-off.
2. The apparatus for generating negative pressure with positive pressure according to claim 1, wherein: the sealing plug (2) and the hollow container (1) are provided with corresponding connecting threads, and the sealing plug (2) is connected with the opening of the hollow container (1) in a threaded manner and is provided with a sealing gasket (8).
3. The apparatus for generating negative pressure with positive pressure according to claim 1, wherein: the hollow container (1) is a transparent shell made of plastic, and the elastic air bag (3) is made of rubber materials with surface tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320118228.5U CN219101736U (en) | 2023-01-18 | 2023-01-18 | Device for generating negative pressure by positive pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320118228.5U CN219101736U (en) | 2023-01-18 | 2023-01-18 | Device for generating negative pressure by positive pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219101736U true CN219101736U (en) | 2023-05-30 |
Family
ID=86462085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320118228.5U Active CN219101736U (en) | 2023-01-18 | 2023-01-18 | Device for generating negative pressure by positive pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219101736U (en) |
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2023
- 2023-01-18 CN CN202320118228.5U patent/CN219101736U/en active Active
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