CN214858602U - Low-pressure oxygen cabin for animal experiments - Google Patents
Low-pressure oxygen cabin for animal experiments Download PDFInfo
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- CN214858602U CN214858602U CN202120220037.0U CN202120220037U CN214858602U CN 214858602 U CN214858602 U CN 214858602U CN 202120220037 U CN202120220037 U CN 202120220037U CN 214858602 U CN214858602 U CN 214858602U
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Abstract
The utility model relates to a low pressure oxygen cabin for animal experiments, which belongs to the technical field of animal experiment equipment and comprises an experiment cabin and a negative pressure buffer cabin, wherein the experiment cabin is provided with a first air inlet hole, a first pressure relief hole and an air outlet hole; a second air inlet hole and a second pressure relief hole are formed in the negative pressure buffer cabin, the second air inlet hole is communicated with the air outlet hole through a pipeline, a second air inlet flow control valve is arranged on the pipeline, and the second pressure relief hole is connected with a second pressure relief valve; the experiment cabin and the negative pressure buffer cabin are respectively connected with a first pressure gauge and a second pressure gauge for detecting the pressure in the experiment cabin and the negative pressure buffer cabin; the experiment cabin and the negative pressure buffer cabin are also respectively connected with a first vacuum generating device and a second vacuum generating device which are used for adjusting the air pressure in the experiment cabin and the negative pressure buffer cabin. The utility model discloses can maintain the atmospheric pressure in the experiment cabin and oxygen concentration in a less fluctuation range.
Description
Technical Field
The utility model belongs to the technical field of animal experimental facilities, a low pressure oxygen cabin for animal experiments is related to.
Background
The existing mature low-pressure oxygen chamber in the market is generally a full-automatic large chamber body with complete functions (similar to a plateau system), but has a very low price; the other one is a simple low-pressure oxygen chamber, and the device is simple and can meet the simple experiment requirement. However, the pumping rate (60L/min) and the air intake speed of the negative pressure machine cannot be completely synchronous, the starting times of the negative pressure machine are reduced only by adopting a larger altitude interval difference (5500m-6500m) when the negative pressure machine is used, the air intake and air exhaust rates are balanced, the automation degree is low, and the efficiency is low. In addition, the pressure and oxygen concentration in the chamber cannot be maintained within a small fluctuation range.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application aims to provide a low pressure oxygen chamber for animal experiments, so as to maintain the air pressure and the oxygen concentration in the experiment chamber within a small fluctuation range.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a low-pressure oxygen chamber for animal experiments comprises an experiment chamber and a negative-pressure buffer chamber, wherein a first air inlet hole, a first pressure relief hole and an air outlet hole are formed in the experiment chamber, the first air inlet hole is connected with a first air inlet flow control valve, and the first pressure relief hole is connected with a first pressure relief valve; a second air inlet hole and a second pressure relief hole are formed in the negative pressure buffer cabin, the second air inlet hole is communicated with the air outlet hole through a pipeline, a second air inlet flow control valve is arranged on the pipeline, and the second pressure relief hole is connected with a second pressure relief valve; the experiment cabin and the negative pressure buffer cabin are respectively connected with a first pressure gauge and a second pressure gauge for detecting the pressure in the experiment cabin and the negative pressure buffer cabin; the experiment cabin and the negative pressure buffer cabin are also respectively connected with a first vacuum generating device and a second vacuum generating device which are used for adjusting the air pressure in the experiment cabin and the negative pressure buffer cabin.
Optionally, the experiment chamber is provided with an observation window, and the observation window is positioned at the top or the side of the experiment chamber.
Optionally, the bottom of the inner side of the experiment cabin is provided with a dung leaking plate.
Optionally, a food trough is arranged in the experiment cabin, a feeding pipe and a water adding pipe are arranged above the food trough, and the other ends of the feeding pipe and the water adding pipe penetrate through the cabin wall of the experiment cabin and extend out of the cabin.
Optionally, a liftable support is arranged in the experiment cabin, a feeding trough is arranged on the support, a feeding hole is formed in the top of the experiment cabin relative to the feeding trough, and a cover plate capable of sealing the feeding hole is arranged at the feeding hole.
Optionally, the bracket comprises a bracket body and a cylinder for driving the bracket body to move in the vertical direction.
Optionally, the negative pressure buffer cabin is arranged on one side of the experiment cabin, which is far away from the first air inlet hole.
Optionally, the first vacuum generating device and the second vacuum generating device are both vacuum machines.
Optionally, the top of the experiment chamber is provided with a transparent lighting window.
The beneficial effects of the utility model reside in that: through additionally arranging a negative pressure buffer chamber and a vacuum generating device, the air pressure and the oxygen concentration in the experiment chamber are maintained in a smaller fluctuation range, the pressure regulation efficiency of the experiment chamber is high, and in addition, the structure is simple and the maintenance is easy.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of the low pressure oxygen chamber for animal experiments.
Reference numerals: the device comprises a first vacuum generating device 1, a second vacuum generating device 2, a second air exhaust hole 3, a second pressure relief hole 4, a first air inlet hole 5, a first pressure relief hole 6, an experiment chamber 7, a lighting window 8, a first pressure gauge 9, a first air exhaust hole 10, an air outlet hole 11, a second air inlet hole 12, a second pressure gauge 13 and a negative pressure buffer chamber 14.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1, a low pressure oxygen chamber for animal experiments comprises an experiment chamber 7 and a negative pressure buffer chamber 14, wherein the experiment chamber 7 is provided with a first air inlet 5, a first pressure relief hole 6, a first air suction hole 10 and an air outlet hole 11, the first air inlet 5 is connected with a first air inlet flow control valve, the first pressure relief hole 6 is connected with a first pressure relief valve, the first air suction hole 10 is connected with a first vacuum generating device 1 for adjusting the air pressure in the experiment chamber 7, and the experiment chamber 7 is further connected with a first pressure gauge 9 for detecting the pressure in the experiment chamber; the negative pressure buffer cabin 14 is provided with a second air inlet 12, a second pressure relief hole 4 and a second air suction hole 3, the second air inlet 12 is communicated with the air outlet 11 through a pipeline, a second air inlet flow control valve is arranged on the pipeline, the second pressure relief hole 4 is connected with a second pressure relief valve, the second air suction hole 3 is connected with a second vacuum generating device 2 used for adjusting the air pressure in the negative pressure buffer cabin 14, and the negative pressure buffer cabin 14 is further connected with a second pressure gauge 13 used for detecting the pressure in the negative pressure buffer cabin. The first vacuum generating device 1 and the second vacuum generating device 2 are preferably vacuum machines. The first air inlet flow control valve and the second air inlet flow control valve are composed of a gas flow switch and a digital display gas flowmeter which are sequentially arranged along the gas flowing direction.
In order to adapt to the life habits of different kinds of animals, the utility model discloses be equipped with transparent lighting window 8 at the top of experiment cabin 7, lighting window 8 department covers has the light screen, and the light screen rotates to be connected so that lighting window 8 shields or opens on the experiment cabin.
In order to facilitate the observation of the conditions in the experiment chamber 7, the utility model discloses top or side in experiment chamber 7 are equipped with transparent observation window.
In order to improve the living environment of animals in the experiment chamber 7 and facilitate the cleaning of excrement, the utility model discloses be equipped with excrement leaking plate in the inboard bottom of experiment chamber 7.
In order to feed the animal in the experiment cabin 7 for the convenience, the utility model discloses be equipped with the trough in experiment cabin 7, the top of trough is equipped with throws esophagus and filler pipe, throws the lower extreme of esophagus and filler pipe apart from trough 2cm best, throws the other end of esophagus and filler pipe and wear out and 7 fixed connection with experiment cabin from experiment cabin 7's top. The trough preferably has a two-slot configuration to allow for separate feeding and watering. Throw the esophagus and include that the steel throws the edible pipe body and be used for controlling the control switch who throws the break-make of esophagus body, when control switch opened, food can follow and throw the edible pipe body and get into the trough fast under the effect of experiment cabin negative pressure. The water feeding pipe is connected with a water source and is provided with a valve for controlling the on-off of the water feeding pipe.
The feeding and drinking of animals can also be realized by adopting other structures, for example, a lifting bracket is arranged in the experimental cabin 7, a feeding trough is arranged on the bracket, a feeding hole is arranged at the top of the experimental cabin 7 corresponding to the feeding trough, and a cover plate capable of sealing the feeding hole is arranged at the feeding hole.
Preferably, the support comprises a support body and a cylinder for driving the support body to move along the vertical direction, the cylinder is installed at the bottom of the experiment chamber 7, and the support body is connected with an expansion rod of the cylinder.
In order to increase the air flow, the utility model discloses set up negative pressure surge tank 14 in the experiment cabin 7 and keep away from one side of first inlet port 5.
The utility model discloses an air in the corresponding cabin is extracted to first vacuum generating device 1, second vacuum generating device 2 for air pressure in the corresponding cabin reduces, and oxygen concentration also reduces thereupon simultaneously, and then reaches experimental expected value.
The utility model discloses an operation method does: because the air pressure at the altitude of 6000m is 47.2kpa, the air pressure of the experiment chamber 7 is controlled to be 48kpa-46.5kpa (equivalent to the altitude of 5980-; pumping the air pressure in the experiment chamber 7 to 48kpa by the first vacuum generating device 1, pumping the air pressure in the negative pressure buffer chamber 14 to 10kpa by the second vacuum generating device 2, so that the air in the experiment chamber 7 enters the negative pressure buffer chamber 14 through the second air inlet 12, setting the air outlet rate of the experiment chamber 7 to be 4.9L/min by a gas flow switch and a gas flowmeter which are arranged on a pipeline connecting the air outlet 11 of the experiment chamber 7 and the second air inlet 12 of the negative pressure buffer chamber 14, and setting the air inlet rate of the experiment chamber 7 to be 5L/min by controlling the gas flow switch and the gas flowmeter at the first air inlet 5 of the experiment chamber 7, so that the air inlet of the experiment chamber 7 is basically consistent with the air inlet of the buffer chamber; because the flow difference between the inlet air and the outlet air of the experiment chamber 7 is 0.1L/min, after a period of time, when the air pressure of the experiment chamber 7 is more than 48kpa, the first vacuum generating device 1 starts air suction again until the air pressure is reduced to 48 kpa; meanwhile, when the air pressure of the negative pressure buffer cabin 14 is greater than 30kpa, the second vacuum generating device 2 starts air suction again until the air pressure is reduced to 30 kpa; theoretically, when the inlet and outlet air rates of the experiment chamber 7 are infinitely close, the altitude in the experiment chamber 7 is also close to 6000m, and the working frequency of the first negative pressure generating device is also lower. However, the flow velocity difference is not completely the same, and even with a relatively high cost air flow velocity controller, a certain flow velocity difference exists, so that the air pressure and the oxygen concentration in the laboratory chamber 7 can be maintained within a small fluctuation range by controlling the flow velocity of the first air intake flow control valve and the second air intake flow control valve (4.9L/min for the second air intake flow control valve, and 5L/min for the first air intake flow control valve) in cooperation with the first vacuum generator 1 and the second vacuum generator 2.
The utility model discloses an add a negative pressure surge tank 14 and a vacuum generating device, realized maintaining the atmospheric pressure in experiment cabin 7 and oxygen concentration in a less fluctuation range, and experiment cabin 7's pressure regulation is efficient, in addition, simple structure, easy maintenance.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a low pressure oxygen cabin for animal experiments which characterized in that: the negative pressure buffer cabin is arranged on the experiment cabin, a first air inlet hole, a first pressure relief hole and an air outlet hole are formed in the experiment cabin, the first air inlet hole is connected with a first air inlet flow control valve, and the first pressure relief hole is connected with a first pressure relief valve; a second air inlet hole and a second pressure relief hole are formed in the negative pressure buffer cabin, the second air inlet hole is communicated with the air outlet hole through a pipeline, a second air inlet flow control valve is arranged on the pipeline, and the second pressure relief hole is connected with a second pressure relief valve; the experiment cabin and the negative pressure buffer cabin are respectively connected with a first pressure gauge and a second pressure gauge for detecting the pressure in the experiment cabin and the negative pressure buffer cabin; the experiment cabin and the negative pressure buffer cabin are also respectively connected with a first vacuum generating device and a second vacuum generating device which are used for adjusting the air pressure in the experiment cabin and the negative pressure buffer cabin.
2. The hypoxic chamber for animal experiments, according to claim 1, wherein: the experiment chamber is provided with an observation window which is positioned at the top or the side of the experiment chamber.
3. The hypoxic chamber for animal experiments, according to claim 1, wherein: and a dung leaking plate is arranged at the bottom of the inner side of the experiment cabin.
4. The hypoxic chamber for animal experiments, according to claim 1, wherein: a trough is arranged in the experiment cabin, a feeding pipe and a water adding pipe are arranged above the trough, and the other ends of the feeding pipe and the water adding pipe penetrate through the cabin wall of the experiment cabin and extend out of the cabin.
5. The hypoxic chamber for animal experiments, according to claim 1, wherein: the experimental cabin is internally provided with a liftable bracket, the bracket is provided with a food groove, the top of the experimental cabin is provided with a food throwing hole relative to the food groove, and the food throwing hole is provided with a cover plate capable of sealing the food throwing hole.
6. The hypoxic chamber for animal experiments, according to claim 5, wherein: the support comprises a support body and a cylinder used for driving the support body to move along the vertical direction.
7. The hypoxic chamber for animal experiments, according to claim 1, wherein: the negative pressure buffer cabin is arranged on one side, away from the first air inlet, of the experiment cabin.
8. The hypoxic chamber for animal experiments, according to claim 1, wherein: the first vacuum generating device and the second vacuum generating device are both vacuum machines.
9. The hypoxic chamber for animal experiments, according to claim 1, wherein: and a transparent lighting window is arranged at the top of the experiment cabin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120220037.0U CN214858602U (en) | 2021-01-26 | 2021-01-26 | Low-pressure oxygen cabin for animal experiments |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120220037.0U CN214858602U (en) | 2021-01-26 | 2021-01-26 | Low-pressure oxygen cabin for animal experiments |
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| Publication Number | Publication Date |
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| CN214858602U true CN214858602U (en) | 2021-11-26 |
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| CN202120220037.0U Active CN214858602U (en) | 2021-01-26 | 2021-01-26 | Low-pressure oxygen cabin for animal experiments |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116508665A (en) * | 2023-06-27 | 2023-08-01 | 北京岷德生物科技有限公司 | Culture device for modeling animal cerebral palsy model and use method thereof |
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2021
- 2021-01-26 CN CN202120220037.0U patent/CN214858602U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116508665A (en) * | 2023-06-27 | 2023-08-01 | 北京岷德生物科技有限公司 | Culture device for modeling animal cerebral palsy model and use method thereof |
| CN116508665B (en) * | 2023-06-27 | 2023-09-26 | 北京岷德生物科技有限公司 | Culture device for modeling animal cerebral palsy model and use method thereof |
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