CN114166576A - Closed sampling device capable of quantitatively sampling - Google Patents
Closed sampling device capable of quantitatively sampling Download PDFInfo
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- CN114166576A CN114166576A CN202111387170.6A CN202111387170A CN114166576A CN 114166576 A CN114166576 A CN 114166576A CN 202111387170 A CN202111387170 A CN 202111387170A CN 114166576 A CN114166576 A CN 114166576A
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- sampling
- pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1062—Sampling under constant temperature, pressure, or the like
Abstract
The invention relates to the technical field of sampling devices, and discloses a closed sampling device capable of quantitatively sampling, which comprises a closed product tank filled with liquid, wherein a return pipe and a sampling pipe are arranged on the product tank; two ends of the bypass pipe are provided with bypass valves which are respectively communicated with the return pipe and the sampling pipe; like this, when needs sample, start the sampling pump, the suction outside the liquid production of sampling pump in to the product jar comes out with the liquid extraction in the product jar, and after filling liquid in the ration buret, through the liquid water conservancy diversion of honeycomb duct in with the ration buret to the sampling bottle, whole device and sampling process are airtight form, have also reached the effect of ration sample.
Description
Technical Field
The invention relates to the field of sampling devices, in particular to a closed sampling device capable of quantitatively sampling.
Background
Sampling, which is the extraction of a portion of the sample from the total sample to be studied for analysis, is basically required to ensure that the extracted sample is sufficiently representative of the total sample. The method aims to analyze and research the extracted samples so as to estimate and infer the characteristics of all the samples, is an economic and effective research method commonly adopted by scientific experiments, quality inspection and the like, and is often applied to the technical production fields of petroleum, chemical industry, medicine and the like.
In the production process of chemical and pharmaceutical processes, especially in the reaction later stage of the synthesis stage of chemical synthetic drugs, sampling analysis is generally needed, however, the prior method is to manually open a hole on a product tank and then extend a sampling tube into the product tank from outside to inside for open type direct sampling, which easily causes harmful volatile gas in the product tank to overflow, pollutes the environment and harms the personal safety, and in addition, the sample is also easily polluted; meanwhile, because the quantitative sampling cannot be carried out, too much or too little sampling is easy to take during sampling, the too much sampling is easy to cause waste, and the too little sampling is required to be repeated, so that the detection efficiency is influenced.
Therefore, a need exists for a closed sampling device that can quantitatively sample according to actual detection needs.
Disclosure of Invention
The invention aims to provide a closed sampling device capable of quantitatively sampling, and aims to solve the problem that a sampling device cannot quantitatively sample in the prior art.
The invention is realized in this way, the airtight sampling device that can sample quantitatively, including the inside is equipped with the liquid and airtight product tank, there are backflow pipe and sampling tube on the said product tank, the inner end of the said backflow pipe and inner end of the said sampling tube are communicated with said product tank, connect with the quantitative sampling structure between outer end of the said backflow pipe and outer end of the said sampling tube;
the quantitative sampling structure comprises a bypass pipe, a quantitative pipe and a sampling bottle, wherein two ends of the quantitative pipe are respectively communicated with the outer end of a return pipe and the outer end of the sampling pipe, the sampling pipe is connected with a sampling pump, two ends of the quantitative pipe are respectively provided with a sampling valve, the quantitative pipe is connected with a flow guide pipe, the upper end of the flow guide pipe is communicated with the quantitative pipe, the lower end of the flow guide pipe is inserted into the sampling bottle, and the flow guide pipe is provided with a flow guide valve; two ends of the bypass pipe are respectively communicated with the outer end of the return pipe and the outer end of the sampling pipe, and two ends of the bypass pipe are respectively provided with a bypass valve;
when the sampling is needed, the sampling pump is started, the bypass valve is closed, the sampling valve is opened, the diversion valve is closed, liquid in the product tank flows in a circulating mode through the sampling pipe, the quantifying pipe, the backflow pipe and the product tank, the bypass valve is opened after the quantifying pipe is filled with the liquid, the sampling valve is closed, the diversion valve is opened, the liquid in the product tank flows in a circulating mode through the sampling pipe, the bypass pipe, the backflow pipe and the product tank, and the liquid in the quantifying pipe flows to the sampling bottle through the diversion pipe in a diversion mode.
Furthermore, the quantitative pipe is arranged longitudinally, and the inner end of the flow guide pipe is communicated with the bottom of the quantitative pipe.
Further, the middle part of the quantitative tube is an air bag section which expands outwards and has elastic deformation, and an air bag cavity is arranged in the air bag section.
Furthermore, the bottom of the air bag cavity protrudes downwards to form a buffer cavity extending to the lower part of the quantitative tube.
Further, the buffer cavity is arranged in a surrounding manner and surrounds the periphery of the lower part of the quantitative pipe.
Furthermore, the upper portion of the quantitative pipe is a corrugated pipe which stretches out and draws back from top to bottom, the lower end of the corrugated pipe is in butt joint communication with the upper end of the air bag section, the upper end of the corrugated pipe is in butt joint communication with the outer end of the return pipe, corrugated walls which swing in the opposite direction or in the opposite direction are arranged on the outer side wall of the corrugated pipe, and adhesive layers are attached to the corrugated walls.
Further, the lower part of the quantitative pipe is a spiral pipe which is spirally arranged.
Further, the inside wall epirelief of coiled pipe is equipped with spirals the arch, it arranges to spiral the arch along the direction of spiraling of coiled pipe to spiral, be equipped with a plurality of through holes in the arch of spiraling, the through hole runs through from top to bottom it is protruding to spiral, along the bellied direction of spiraling, it is a plurality of the through hole dislocation is arranged.
Further, the quantifying pipe is connected with a drainage pipe, the upper end of the drainage pipe is communicated with the top of the quantifying pipe, the lower end of the drainage pipe is inserted into the sampling bottle, and the lower end of the drainage pipe is higher than the lower end of the flow guiding pipe.
Further, the product jar is longitudinal arrangement, the inner of sampling tube is connected in the bottom of product jar, the inner of back flow is connected at the top of product jar.
Compared with the prior art, the closed sampling device capable of quantitatively sampling provided by the invention has the advantages that the return pipe and the sampling pipe are arranged on the closed product tank, the inner end of the return pipe and the inner end of the sampling pipe are both communicated with the product tank, the quantitative sampling structure is connected between the outer end of the return pipe and the outer end of the sampling pipe, the sampling pump is arranged on the sampling pipe and generates external suction force on liquid in the product tank to extract the liquid in the product tank, so that the liquid circularly flows between the product tank and the sampling pipe as well as between the quantitative pipe and the return pipe, when the quantitative pipe is filled with the liquid, the bypass valve is opened, the sampling valve is closed, the flow guide valve is opened, the liquid in the quantitative pipe flows into the sampling bottle through the flow guide pipe, the whole device and the sampling process are in a closed form, and the purpose of quantitatively sampling is achieved through the quantitative pipe.
Drawings
FIG. 1 is a schematic structural diagram of a closed sampling device capable of quantitative sampling provided by the present invention;
FIG. 2 is a schematic structural view of a balloon segment and a bellows of the quantification tube provided by the present invention;
FIG. 3 is a schematic view of the structure of a spiral pipe at the lower part of the quantitative tube provided by the present invention;
FIG. 4 is a schematic view of a cross-sectional structure of the spiral protrusion provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, preferred embodiments of the present invention are shown.
The closed sampling device capable of quantitatively sampling comprises a closed product tank 100 filled with liquid, wherein a return pipe 200 and a sampling pipe 300 are arranged on the product tank 100, the inner end of the return pipe 200 and the inner end of the sampling pipe 300 are both communicated with the product tank 100, and a quantitative sampling structure is connected between the outer end of the return pipe 200 and the outer end of the sampling pipe 300;
the quantitative sampling structure comprises a bypass pipe 400, a quantitative pipe 500 and a sampling bottle 600, wherein two ends of the quantitative pipe 500 are respectively communicated with the outer end of a return pipe 200 and the outer end of the sampling pipe 300, the sampling pipe 300 is connected with a sampling pump 700, two ends of the quantitative pipe 500 are respectively provided with a sampling valve 503, the quantitative pipe 500 is connected with a flow guide pipe 501, the upper end of the flow guide pipe 501 is communicated with the quantitative pipe 500, the lower end of the flow guide pipe 501 is inserted into the sampling bottle 600, and the flow guide pipe 501 is provided with a flow guide valve 5011; two ends of the bypass pipe 400 are respectively communicated with the outer end of the return pipe 200 and the outer end of the sampling pipe 300, and two ends of the bypass pipe 400 are respectively provided with a bypass valve 401;
when sampling is needed, the sampling pump 700 is started, the bypass valve 401 is closed, the sampling valve 503 is opened, the diversion valve 5011 is closed, liquid in the product tank 100 circularly flows through the sampling pipe 300, the quantifying pipe 500, the return pipe 200 and the product tank 100 in sequence, after the quantifying pipe 500 is filled with liquid, the bypass valve 401 is opened, the sampling valve 503 is closed, the diversion valve 5011 is opened, liquid in the product tank 100 circularly flows through the sampling pipe 300, the bypass pipe 400, the return pipe 200 and the product tank 100 in sequence, and the liquid in the quantifying pipe 500 is guided to the sampling bottle 600 through the diversion pipe 501.
Thus, by arranging the return pipe 200 and the sampling pipe 300 on the closed product tank 100, the inner end of the return pipe 200 and the inner end of the sampling pipe 300 are both communicated with the product tank 100, a quantitative sampling structure is connected between the outer end of the return pipe 200 and the outer end of the sampling pipe 300, the sampling pump 700 arranged on the sampling pipe 300 generates external suction force on liquid in the product tank 100, the liquid in the product tank 100 is extracted, the liquid circularly flows between the product tank 100 and the sampling pipe 300, and between the quantitative pipe 500 and the return pipe 200, when the quantitative pipe 500 is filled with the liquid, the bypass valve 401 is opened, the sampling valve 503 is closed, the diversion valve 5011 is opened, the liquid in the quantitative pipe 500 flows into the sampling bottle 600 through the diversion pipe 501, the whole device and the sampling process are in a closed form, and the purpose of quantitative sampling is achieved through the quantitative pipe 500.
The quantifying pipe 500 is arranged longitudinally, the inner end of the flow guide pipe 501 is communicated with the bottom of the quantifying pipe 500, and therefore when the quantifying pipe 500 is filled with liquid, the flow guide valve 5011 is opened, and the liquid in the quantifying pipe 500 can automatically flow down under the action of gravity and flow into the sampling bottle 600 through the flow guide pipe 501.
The middle part of dosing pipe 500 is for expanding outwards and have elastically deformable's gasbag section 302, has the gasbag chamber in the gasbag section 302, like this, can hold more liquid according to actual need in the dosing pipe 500.
The bottom of gasbag chamber is outstanding downwards, forms the buffer memory chamber 303 that extends to quantitative pipe 500 lower part, like this when needs use the liquid that is a bit more than the sample volume of setting for, can extrude the liquid in buffer memory chamber 303, has improved sampling speed and efficiency.
The buffer cavity 303 is arranged in a surrounding manner, surrounds the periphery of the lower part of the quantitative tube 500, and can buffer more liquid.
The upper portion of the quantitative tube 500 is a corrugated tube 305 which stretches up and down, the lower end of the corrugated tube 305 is in butt joint communication with the upper end of the air bag section 302, the upper end of the corrugated tube 305 is in butt joint communication with the outer end of the return tube 200, the outer side wall of the corrugated tube 305 is provided with a corrugated wall 3051 which swings oppositely or oppositely, and an adhesive layer is attached to the corrugated wall 3051.
The lower part of the dosing tube 500 is the spiral tube 306 which is arranged in a spiral manner, so that the flow speed of the liquid can be reduced, and the liquid in the dosing tube 500 is prevented from flowing downwards too fast.
A spiral protrusion 3061 is convexly arranged on the inner side wall of the spiral pipe 306, the spiral protrusion 3061 is spirally arranged along the spiral direction of the spiral pipe 306, a plurality of through holes 3062 are formed in the spiral protrusion 3061, the through holes 3062 vertically penetrate through the spiral protrusion 3061, and the through holes 3062 are arranged in a staggered mode along the spiral direction of the spiral protrusion 3061; thus, by arranging the spiral protrusion 3061 in the spiral pipe 306 and arranging the through hole 3062 on the spiral protrusion 3061, the flow rate of the liquid can be further slowed down, so that the liquid can slowly flow into the sampling bottle 600, and the sampling amount can be conveniently controlled.
The quantifying tube 500 is connected with a drainage tube 502, the upper end of the drainage tube 502 is communicated with the top of the quantifying tube 500, the lower end of the drainage tube 502 is inserted into the sampling bottle 600, the lower end of the drainage tube 502 is higher than the lower end of the guide tube 501, and the drainage tube 502 is provided with a drainage valve 5021, so that when the liquid in the sampling bottle 600 is too much due to carelessness, the too much liquid can be recovered through the drainage tube 502.
The product tank 100 is longitudinal arrangement, and the inner of sampling tube 300 is connected in the bottom of product tank 100, and the inner of back flow pipe 200 is connected at the top of product tank 100, like this, because whole device is airtight setting, and the liquid in the product tank 100 receives under the effect of the outer suction of sampling pump 700 and self gravity, can get into sampling tube 300 downwards smoothly.
The quantitative tube 500 may be transparent to facilitate observation of the state of the liquid in the quantitative tube 500; or, a volume scale is provided on the outer surface of the quantitative tube 500, and when the liquid in the quantitative tube 500 reaches a certain scale, the sampling valve 503 is closed, so as to control the amount of the liquid in the quantitative tube 500.
Can set up to dismantle between ration pipe 500 and the sample valve 503 and be connected, according to the sample volume of difference, trade the ration pipe 500 of different volumes, it is efficient to handle simple and convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The closed sampling device capable of quantitatively sampling is characterized by comprising a closed product tank filled with liquid, wherein a return pipe and a sampling pipe are arranged on the product tank, the inner end of the return pipe and the inner end of the sampling pipe are communicated with the product tank, and a quantitative sampling structure is connected between the outer end of the return pipe and the outer end of the sampling pipe;
the quantitative sampling structure comprises a bypass pipe, a quantitative pipe and a sampling bottle, wherein two ends of the quantitative pipe are respectively communicated with the outer end of a return pipe and the outer end of the sampling pipe, the sampling pipe is connected with a sampling pump, two ends of the quantitative pipe are respectively provided with a sampling valve, the quantitative pipe is connected with a flow guide pipe, the upper end of the flow guide pipe is communicated with the quantitative pipe, the lower end of the flow guide pipe is inserted into the sampling bottle, and the flow guide pipe is provided with a flow guide valve; two ends of the bypass pipe are respectively communicated with the outer end of the return pipe and the outer end of the sampling pipe, and two ends of the bypass pipe are respectively provided with a bypass valve;
when the sampling is needed, the sampling pump is started, the bypass valve is closed, the sampling valve is opened, the diversion valve is closed, liquid in the product tank flows in a circulating mode through the sampling pipe, the quantifying pipe, the backflow pipe and the product tank, the bypass valve is opened after the quantifying pipe is filled with the liquid, the sampling valve is closed, the diversion valve is opened, the liquid in the product tank flows in a circulating mode through the sampling pipe, the bypass pipe, the backflow pipe and the product tank, and the liquid in the quantifying pipe flows to the sampling bottle through the diversion pipe in a diversion mode.
2. A closed sampling device capable of quantitative sampling according to claim 1, wherein the quantitative tube is arranged longitudinally, and the inner end of the flow guide tube is communicated with the bottom of the quantitative tube.
3. The closed quantitative sampling device according to claim 1 or 2, wherein the middle part of the quantitative tube is an outwardly-expanding balloon section with an elastic deformation, and the balloon section has a balloon cavity therein.
4. A closed quantitative sampling device according to claim 3, wherein the bottom of said air bag cavity is downwardly protruded to form a buffer cavity extending to the lower part of the quantitative tube.
5. The closed quantitative sampling device as claimed in claim 4, wherein the buffer chamber is arranged in a surrounding manner around the circumference of the lower portion of the quantitative tube.
6. A closed sampling device capable of quantitative sampling according to claim 3, wherein the upper part of the quantitative tube is a corrugated tube which is telescopic up and down, the lower end of the corrugated tube is in butt joint communication with the upper end of the air bag section, the upper end of the corrugated tube is in butt joint communication with the outer end of the return tube, the outer side wall of the corrugated tube is provided with corrugated walls which swing towards or away from each other, and an adhesive layer is attached to the corrugated walls.
7. A closed sampling device capable of quantitative sampling according to claim 1 or 2, wherein the lower part of the quantitative tube is a coiled tube arranged in a spiral.
8. The closed sampling device capable of quantitative sampling according to claim 7, wherein a spiral protrusion is convexly arranged on the inner side wall of the spiral pipe, the spiral protrusion is spirally arranged along the spiral direction of the spiral pipe, a plurality of through holes are arranged in the spiral protrusion, the through holes vertically penetrate through the spiral protrusion, and the through holes are arranged in a staggered manner along the spiral direction of the spiral protrusion.
9. A closed sampling device capable of quantitative sampling according to claim 1 or 2, wherein the quantitative tube is connected with a drainage tube, the upper end of the drainage tube is communicated with the top of the quantitative tube, the lower end of the drainage tube is inserted into the sampling bottle, and the lower end of the drainage tube is higher than the lower end of the flow guide tube.
10. A closed quantitative sampling device according to claim 1 or 2, wherein said product tank is arranged longitudinally, the inner end of said sampling tube is connected to the bottom of the product tank, and the inner end of said return tube is connected to the top of the product tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111387170.6A CN114166576B (en) | 2021-11-22 | 2021-11-22 | Closed sampling device capable of quantitatively sampling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387170.6A CN114166576B (en) | 2021-11-22 | 2021-11-22 | Closed sampling device capable of quantitatively sampling |
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| CN114166576A true CN114166576A (en) | 2022-03-11 |
| CN114166576B CN114166576B (en) | 2023-06-30 |
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| CN114166576B (en) | 2023-06-30 |
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