CN216525107U - Gas injection mechanism for detection - Google Patents
Gas injection mechanism for detection Download PDFInfo
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- CN216525107U CN216525107U CN202123057280.4U CN202123057280U CN216525107U CN 216525107 U CN216525107 U CN 216525107U CN 202123057280 U CN202123057280 U CN 202123057280U CN 216525107 U CN216525107 U CN 216525107U
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- water bath
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Abstract
The utility model discloses a gas blowing mechanism for detection, which comprises a nitrogen blowing instrument, a covering cavity, a gas conveying pipe, a gas storage tank, a supporting bottom ring and a ventilating baffle plate, wherein the covering cavity is formed by a plurality of gas pipes; the nitrogen blowing instrument comprises: a water bath heating base, a clamping piece and a blowing needle tube; a clamping piece for clamping the test tube is arranged above the water bath heating base; a blowing needle tube is arranged above the clamping piece; the top of the injection needle tube is connected with an air source through an air tube; the middle part of the water bath heating base is provided with a main shaft; a covering cavity is arranged above the position, corresponding to the test tube, of the clamping piece; the covering cavity is of a circular plate-shaped hollow cavity structure; the bottom of the covering cavity is provided with a clamping groove which is matched and nested with the opening at the top of the test tube; the inner side of the clamping groove is provided with a ventilation baffle; more than one air hole is formed in the surface of the ventilation baffle; through the mode that sets up the gas holder and cover the chamber, the nitrogen gas after the jetting enters into the gas holder and collects. Ensure that the water bath nitrogen blowing instrument can not influence the operation environment in the using process.
Description
Technical Field
The utility model relates to the technical field of detection, in particular to a gas injection mechanism for detection.
Background
The water bath nitrogen blowing instrument is a nitrogen blowing instrument which uses a special water bath as a heating carrier, is different from a dry nitrogen blowing instrument which uses an aluminum module for heating, and has the heating temperature of between room temperature and 100 ℃, wherein the circular water bath nitrogen blowing instrument consists of a base, a support device, a sample frame and a gas distribution system. The water bath nitrogen blowing instrument usually blows nitrogen into the surface of a heated sample to concentrate the sample, and the nitrogen is inactive gas and can play a role in isolating oxygen and prevent a reagent in a test tube from being oxidized. The water bath nitrogen blowing instrument breaks the gas-liquid balance above the liquid by utilizing the rapid flow of the nitrogen, thereby accelerating the volatilization speed of the liquid; and the temperature is increased by a water bath heating mode, thereby achieving the purpose of concentration.
In the actual use process, a test tube of a liquid sample is arranged on a sample rack, then nitrogen is blown into the test tube through an air guide tube, but when the air guide tube is aligned with the test tube for blowing, the liquid sample is easy to spill due to the pressure change of the liquid sample, and the detection precision of the liquid sample in the test tube is influenced; the gas is not recycled after the nitrogen is blown, so that the resource waste is caused, and when the nitrogen leaks out and the nitrogen content in the air is increased (> 84%), oxygen in the air can be discharged, so that workers can inhale oxygen insufficiently, and feel that the breathing is not smooth and people feel suffocation. High concentrations of nitrogen (> 90%) can cause hypoxic symptoms and signs such as headache, nausea, vomiting, chest tightness, chest pain, cyanosis, etc. In severe cases, coma occurs rapidly.
In order to solve the problems, the nitrogen blowing equipment is closed, so that the phenomena of 'running, overflowing, dropping' and the like of nitrogen in the working environment are reduced, and meanwhile, the function of preventing the liquid sample from splashing can be achieved.
The utility model has the following contents:
according to the defects of the prior art, the utility model provides a gas injection mechanism for detection, wherein injected nitrogen enters a gas storage tank to be collected in a mode of arranging the gas storage tank and a covering cavity. Ensure that the water bath nitrogen blowing instrument can not influence the operation environment in the using process.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a gas injection mechanism for detection comprises a nitrogen blowing instrument, a covering cavity, a gas conveying pipe, a gas storage tank, a supporting bottom ring and a ventilating baffle; the nitrogen blowing instrument comprises: a water bath heating base, a clamping piece and a blowing needle tube;
a clamping piece for clamping the test tube is arranged above the water bath heating base; a blowing needle tube is arranged above the clamping piece; the top of the injection needle tube is connected with an air source through an air tube; the middle part of the water bath heating base is provided with a main shaft;
a covering cavity is arranged above the position, corresponding to the test tube, of the clamping piece; the covering cavity is of a circular plate-shaped hollow cavity structure; the bottom of the covering cavity is provided with a clamping groove which is matched and nested with the opening at the top of the test tube; the inner side of the clamping groove is provided with a ventilation baffle; the blowing needle tube penetrates through the center position of the ventilation baffle; more than one air hole is formed in the surface of the ventilation baffle;
one side of the covering cavity is communicated with one end of the gas conveying pipe; the other end of the gas pipe is communicated with a gas storage tank.
Preferably, a supporting bottom ring is fixed on the inner side of the water bath heating base below the corresponding clamping piece; the supporting bottom ring is of a circular structure, and one side of the supporting bottom ring is connected with the main shaft; the annular structure of the supporting bottom ring corresponds to the bottom of the test tube on the clamping piece; the diameter of the inner ring of the support bottom ring is smaller than that of the branch pipe.
Preferably, one side of the covering cavity is communicated with one end of the gas conveying pipe, and the covering cavity is correspondingly provided with a groove at the communicated position; one end of the gas pipe is provided with a clamping piece matched with the groove.
Preferably, the gas storage tank is provided with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are both provided with valves.
Preferably, a diverter is arranged on the inner side of the injection needle tube, and the middle part of the diverter is fixed with the sleeve; the sleeve is nested on the main shaft and moves up and down along the main shaft, and an adjusting knob is arranged on the sleeve; the covering cavity and the injection needle tube move synchronously.
Preferably, a filter screen is arranged in the air hole of the ventilation baffle.
Preferably, the diameter of the covering cavity is consistent with that of the water bath heating base.
The utility model discloses a gas injection mechanism for detection, which has the following beneficial effects:
1. all nitrogen sprayed into the test tube in the covering cavity enters the covering cavity along the air holes and finally enters the air storage tank, so that the nitrogen is prevented from leaking.
2. The clamping groove of the covering cavity is internally provided with a ventilation baffle plate, so that part of liquid is prevented from splashing out of the test tube due to injection.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the cover chamber lift configuration of the present invention.
FIG. 3 is a schematic view of the bottom tube placement structure inside the water bath heating base of the present invention.
Fig. 4 is a schematic view of the inner side structure of the water bath heating base of the present invention.
Fig. 5 is a partial structural schematic diagram of the present invention.
Fig. 6 is a schematic diagram of the mating relationship of the card of the present invention.
FIG. 7 is a schematic view of the surface structure of the covered cavity of the present invention.
FIG. 8 is a schematic diagram of the back structure of the covered cavity of the present invention.
In the figure, a nitrogen blowing instrument 1, a water bath heating base 1-1, a clamping piece 1-2, a blowing needle tube 1-3, a main shaft 1-4, a covering cavity 2, a gas conveying pipe 3, a gas storage tank 4, a supporting bottom ring 5, a ventilation baffle 6, a sleeve 7, an adjusting knob 8, a clamping groove 9, a groove 10, a clamping piece 11, a test tube 12, a gas inlet 13 and a gas hole 14.
The specific implementation mode is as follows:
as shown in fig. 1, 2, 4 and 5, a gas injection mechanism for detection comprises a nitrogen blowing instrument 1, a covering cavity 2, a gas pipe 3, a gas storage tank 4, a supporting bottom ring 5 and a ventilating baffle 6; the nitrogen blowing instrument 1 includes: 1-1 parts of a water bath heating base, 1-2 parts of a clamping piece and 1-3 parts of a blowing needle tube; a clamping piece 1-2 for clamping the test tube 12 is arranged above the water bath heating base 1-1; the clamping piece 1-2 is of a circular plate structure, the edge of each circular plate is provided with a plurality of grooves 10 for placing the test tubes 12, the clamping piece 1-2 is provided with two circular plates, and springs for clamping the test tubes 12 are fixed between the circular plates; a blowing needle tube 1-3 is arranged above the clamping piece 1-2; the top parts of the injection needle tubes 1-3 are connected with an air source through air pipes; because the injection needle tubes 1-3 are provided with a plurality of injection needles, nitrogen before entering the injection tube can be divided by the splitter; the middle part of the water bath heating base 1-1 is provided with a main shaft 1-4; the main shaft 1-4 is used as a support of the whole structure to support the clamping piece 1-2 and the blowing needle tube 1-3 above the water bath heating base 1-1. The structure of the part is the existing structure and is not described in detail.
As shown in fig. 5-8, a covering cavity 2 is arranged above the position of the clamping piece 1-2 corresponding to the test tube 12; the covering cavity 2 is in a disc-shaped hollow cavity structure, and the diameter of the covering cavity 2 is consistent with that of the water bath heating base 1-1; the bottom of the covering cavity 2 is provided with a clamping groove 9 which is matched and nested with the top opening of the test tube 12; the inner side of the clamping groove 9 is provided with a ventilation baffle 6; the blowing needle tube 1-3 penetrates through the center position of the ventilation baffle 6; more than one air hole 14 is formed in the surface of the air baffle 6, and a filter screen is arranged in the air hole 14 of the air baffle 6; when the injection needle tube 1-3 injects nitrogen to the liquid surface for cooling, the nitrogen begins to enter the covering cavity 2 due to pressure, and one side of the covering cavity 2 is communicated with one end of the gas transmission tube 3; the other end of the gas pipe 3 is communicated with a gas storage tank 4; finally, the gas enters the gas storage tank 4 for storage, and the gas is prevented from being directly diffused to the air after being blown in the test tube 12. The gas storage tank 4 is provided with a gas inlet and a gas outlet, both of which are provided with valves, and the gas inlet valve is closed after gas is stored.
As shown in fig. 3 and 5, a supporting bottom ring 5 is fixed on the inner side of the water bath heating base 1-1 corresponding to the lower part of the clamping piece 1-2; the supporting bottom ring 5 is of a circular ring-shaped structure, and one side of the supporting bottom ring is connected with the main shafts 1-4; the annular structure of the supporting bottom ring 5 corresponds to the bottom of the test tube 12 on the clamping piece 1-2, and the structure considers that the covering cavity 2 needs to be nested at the top of the test tube 12, the test tube 12 can be pressed to move downwards, and the problem that the test tube 12 falls off easily is solved; the test tube 12 is supported by the support bottom ring 5. To ensure structural correspondence, the inner ring diameter of the support bottom ring 5 needs to be smaller than the branch pipe diameter. Compared with the supporting plate, the annular structure can reduce the volume and the problem that the structure contact influences the heating of the test tube 12.
As shown in fig. 6-8, one side of the covering cavity 2 is communicated with one end of the gas pipe 3, and a groove 10 is correspondingly arranged at the communicated position of the covering cavity 2; one end that gas-supply pipe 3 is connected is equipped with the fastener 11 of cooperation recess 10, cooperates fixedly through fastener 11, makes things convenient for later stage gas holder 4 to break away from the dismantlement, and the correspondence is equipped with air inlet 13 in the recess 10, and fastener 11 corresponds the air inlet 13 position and is equipped with the inlet port.
As shown in fig. 2, the inner side of the injection needle tube 1-3 is provided with a diverter, the middle part of which is fixed with a sleeve 7; the sleeve 7 is nested on the main shafts 1-4 and moves up and down along the main shafts 1-4, and an adjusting knob 8 is arranged on the sleeve 7; the covering cavity 2 and the injection needle tube 1-3 move synchronously. After the test tube 12 is used, the test tube directly moves upwards along with the injection needle tube 1-3 of the original equipment to vacate space, so that the test tube 12 is convenient to take out, and redundant operation steps are not needed.
The above-mentioned fixing methods are all welded or screwed by means of the common technical means of those skilled in the art, if they are not separately described.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. A gas injection mechanism for detection comprises a nitrogen blowing instrument, a covering cavity, a gas conveying pipe, a gas storage tank, a supporting bottom ring and a ventilating baffle; the nitrogen blowing instrument comprises: a water bath heating base, a clamping piece and a blowing needle tube;
a clamping piece for clamping the test tube is arranged above the water bath heating base; a blowing needle tube is arranged above the clamping piece; the top of the injection needle tube is connected with an air source through an air tube; the middle part of the water bath heating base is provided with a main shaft;
the test tube clamp is characterized in that a covering cavity is arranged above the position, corresponding to the test tube, of the clamping piece; the covering cavity is of a circular plate-shaped hollow cavity structure; the bottom of the covering cavity is provided with a clamping groove which is matched and nested with the opening at the top of the test tube; the inner side of the clamping groove is provided with a ventilation baffle; the blowing needle tube penetrates through the center position of the ventilation baffle; more than one air hole is formed in the surface of the ventilation baffle;
one side of the covering cavity is communicated with one end of the gas conveying pipe; the other end of the gas pipe is communicated with a gas storage tank.
2. The gas injection mechanism for detection as set forth in claim 1, wherein: a supporting bottom ring is fixed on the inner side of the water bath heating base and below the corresponding clamping piece; the supporting bottom ring is of a circular structure, and one side of the supporting bottom ring is connected with the main shaft; the annular structure of the supporting bottom ring corresponds to the bottom of the test tube on the clamping piece; the diameter of the inner ring of the support bottom ring is smaller than that of the branch pipe.
3. The gas injection mechanism for detection as set forth in claim 1, wherein: one side of the covering cavity is communicated with one end of the gas conveying pipe, and the covering cavity is correspondingly provided with a groove at the communicated position; one end of the gas pipe is provided with a clamping piece matched with the groove.
4. The gas injection mechanism for detection as set forth in claim 1, wherein: the gas storage tank is provided with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are both provided with valves.
5. The gas injection mechanism for detection as set forth in claim 1, wherein: a shunt is arranged on the inner side of the injection needle tube, and the middle part of the shunt is fixed with the sleeve; the sleeve is nested on the main shaft and moves up and down along the main shaft, and an adjusting knob is arranged on the sleeve; the covering cavity and the injection needle tube move synchronously.
6. The gas blowing mechanism for detection as set forth in claim 1, wherein: and a filter screen is arranged in the air hole of the ventilation baffle.
7. The gas blowing mechanism for detection as set forth in claim 3, wherein: the diameter of the covering cavity is consistent with that of the water bath heating base.
Priority Applications (1)
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CN202123057280.4U CN216525107U (en) | 2021-12-07 | 2021-12-07 | Gas injection mechanism for detection |
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CN202123057280.4U CN216525107U (en) | 2021-12-07 | 2021-12-07 | Gas injection mechanism for detection |
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CN216525107U true CN216525107U (en) | 2022-05-13 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115993284A (en) * | 2023-03-24 | 2023-04-21 | 成都圣恩生物科技股份有限公司 | Nitrogen blowing instrument |
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2021
- 2021-12-07 CN CN202123057280.4U patent/CN216525107U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115993284A (en) * | 2023-03-24 | 2023-04-21 | 成都圣恩生物科技股份有限公司 | Nitrogen blowing instrument |
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