CN111879553B - Adjustable food detection sampler with solid-liquid classification function - Google Patents

Adjustable food detection sampler with solid-liquid classification function Download PDF

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Publication number
CN111879553B
CN111879553B CN202010696887.8A CN202010696887A CN111879553B CN 111879553 B CN111879553 B CN 111879553B CN 202010696887 A CN202010696887 A CN 202010696887A CN 111879553 B CN111879553 B CN 111879553B
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Prior art keywords
sampling tube
solid
liquid
valve plate
tube
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CN202010696887.8A
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CN111879553A (en
Inventor
孔伟月
张晓光
范鹏微
王博文
刘迪
王艳姿
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Hebei Xiangzhi Testing Technology Co ltd
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Hebei Xiangzhi Testing Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/04Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1445Overpressure, pressurisation at sampling point
    • G01N2001/1454Positive displacement, piston

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  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention relates to an adjustable food detection sampler with a solid-liquid classification function, which comprises a sampling tube and a negative pressure generating device which are connected with each other, wherein the bottom of the sampling tube is provided with a check valve plate, and the check valve plate enables materials to only enter from the bottom of the sampling tube; the middle part of the sampling tube is provided with a filter screen which is detachably arranged in the sampling tube; the side wall of the lower end of the sampling tube is provided with a liquid outlet, the liquid outlet is provided with a plug, and a filter screen for preventing solid materials from being discharged is arranged in the liquid outlet. The invention has simple integral structure, simple operation and convenient carrying, can be suitable for sampling liquid materials and solid-liquid mixed materials, can separate solid from liquid to a certain extent or remove liquid to keep solid, and has more convenient use and better flexibility when sampling the solid-liquid mixed materials.

Description

Adjustable food detection sampler with solid-liquid classification function
Technical Field
The invention relates to a sampling device for food detection, in particular to an adjustable food detection sampler with a solid-liquid classification function.
Background
Food safety (food safety) means that the food is nontoxic and harmless, meets the nutritional requirements, and does not cause any acute, subacute or chronic harm to human health. Food safety is defined according to the food safety definition as "public health problem of toxic and harmful substances in food affecting human health".
Food safety is also a interdisciplinary field for specially discussing food sanitation and edible safety in the processes of food processing, storage, sales and the like, reducing hidden danger of diseases and preventing food poisoning, so the food safety is important. Food safety, is "tube" out. Related departments and enterprises are required to strictly monitor and detect food.
The food is often required to be detected in the production and processing process of the food so as to ensure the safety of the food, and the food is produced in batches, so that all the detection is inconvenient, the food is often required to be sampled and detected, the food is divided into solid food and liquid food, and some foods or semi-finished products in the production process are solid-liquid simultaneously, the existing detection and sampling equipment can only sample and detect single solid or liquid food, the sampling function is single, and the convenience of sampling of a solid-liquid mixture cannot be met.
Disclosure of Invention
The invention aims to solve the technical problem of providing an adjustable food detection sampler with a solid-liquid classification function.
In order to solve the problems, the invention adopts the following technical scheme:
An adjustable food detection sampler with solid-liquid classification function, which has the key technology that: the device comprises a sampling tube and a negative pressure generating device, wherein the sampling tube is connected with the negative pressure generating device through a connecting pipe;
The bottom of the sampling tube is provided with a check valve plate, and the check valve plate enables materials to enter from the bottom of the sampling tube only;
the middle part of the sampling tube is provided with a filter screen which is detachably arranged in the sampling tube;
the side wall of the lower end of the sampling tube is provided with a liquid outlet, the liquid outlet is provided with a plug, and a filter screen for preventing solid materials from being discharged is arranged in the liquid outlet.
As a further improvement of the invention, the bottom of the sampling tube is also provided with a non-return part, the non-return part comprises a circular fixing ring and a non-return rubber sleeve arranged on the fixing ring, the cross section of the non-return rubber sleeve is in an inverted V shape, and the top end of the non-return rubber sleeve is provided with an opening in a shape like a Chinese character 'Ying'.
As a further improvement of the invention, the sampling tube sequentially comprises a tube opening, two connecting tubes and a top cover from bottom to top, wherein the tube opening, the two connecting tubes and the top cover are sequentially connected in a sealing way through threads, and the check valve plate is arranged between the tube opening and the first connecting tube; the filter screen is installed between two the connecting cylinders, a top cover is arranged at the port of the connecting cylinder at the top, a connecting nozzle is arranged on the top cover, and the connecting nozzle is connected with the negative pressure generating device through a connecting pipe.
As a further improvement of the invention, the negative pressure generating device comprises an outer cylinder body, a piston arranged in the outer cylinder body and a pull rod connected with the piston, wherein the bottom of the outer cylinder body is provided with a bottom sealing head, and the bottom sealing head is provided with a connecting nozzle used for being connected with a connecting pipe.
As a further improvement of the invention, a check valve which can only exhaust is arranged on the bottom of the outer cylinder body or the bottom sealing head.
As a further improvement of the invention, the top of the outer cylinder body is provided with an exhaust hole, and the piston is a one-way valve piston.
As a further improvement of the invention, a window is arranged on the side wall of the sampling tube.
As a further improvement of the invention, the check valve plate comprises a supporting plate and a rubber valve plate, wherein the supporting plate is positioned below, a plurality of through holes are formed in the supporting plate, the central part of the rubber valve plate is fixedly connected with the supporting plate, and the diameter of the rubber valve plate is equal to the inner diameter of the sampling tube.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
the invention has simple integral structure, simple operation and convenient carrying, can be suitable for sampling liquid materials and solid-liquid mixed materials, can separate solid from liquid to a certain extent or remove liquid to keep solid, and has more convenient use and better flexibility when sampling the solid-liquid mixed materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of a partial enlarged structure of the sampling tube of the present invention.
Fig. 3 is a schematic view of the structure of the support plate in the check valve plate of the present invention.
Fig. 4 is a schematic structural view of the negative pressure generating apparatus of the present invention.
Fig. 5 is a schematic structural view of the check member of the present invention.
Fig. 6 is a schematic view of the structure of the filter screen of the present invention.
Wherein: 1 barrel mouth, 2 check valve plate, 2-1 backup pad, 2-2 rubber valve sheet, 3 transition connecting barrel, 4 check part, 4-1 retainer plate, 4-2 check gum cover, 5 connecting barrel, 6 window, 7 top cap, 8 connecting pipe, 9 negative pressure generating device, 9-1 outer barrel, 9-2 piston, 9-3 pull rod, 9-4 fixed cover, 9-5 handle, 9-6 bottom head, 10 sealing washer, 11 filter screen, 11-1 retainer plate, 11-2 screen cloth, 12 leakage fluid dram, 13 end cap.
Detailed Description
For the purposes of clarity, technical solutions and advantages of the present invention, the following description will be made in detail with reference to specific embodiments, it should be understood that the terms "center," "vertical," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. are used for convenience of description and for simplifying the description, but do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.
An adjustable food detection sampler with a solid-liquid classification function as shown in fig. 1 comprises a sampling tube and a negative pressure generating device 9, wherein the sampling tube and the negative pressure generating device 9 are connected through a connecting tube 8.
Referring to fig. 1 and 2, the bottom of the sampling tube is provided with a check valve plate 2, and the check valve plate 2 enables materials to enter from the bottom of the sampling tube only; the material (liquid or solid-liquid mixture) after entering can not be discharged from the bottom of the sampling tube. Referring to fig. 2 and 3, the check valve plate 2 includes a support plate 2-1 and a rubber valve plate 2-2, the support plate 2-1 is located below and is provided with a plurality of through holes, the central part of the rubber valve plate 2-2 is fixedly connected with the support plate 2-1 through screws, and the diameter of the rubber valve plate 2-2 is equal to the inner diameter of the sampling tube.
The middle part of the sampling tube is provided with a filter screen 11, and the filter screen 11 is detachably arranged in the sampling tube; the screen 11 may be configured for use with a number of different mesh sizes. Referring to fig. 6, the filter screen 11 includes a support ring 11-1 and a mesh cloth 11-2 provided on the support ring 11-1.
As shown in fig. 1 and 2, a liquid outlet 12 is formed in the side wall of the lower end of the sampling tube, a plug 13 is arranged on the liquid outlet 12, and a filter screen for preventing solid materials from being discharged is arranged in the liquid outlet 12. When extracting the solid-liquid mixture, if the plug 13 is opened, the liquid can be discharged, and the solid material can be taken out as much as possible.
As shown in fig. 1 and 2, the bottom of the sampling tube is also provided with a non-return member 4. As shown in fig. 5, the non-return part 4 comprises a circular fixing ring 4-1 and a non-return rubber sleeve 4-2 arranged on the fixing ring 4-1, the cross section of the non-return rubber sleeve 4-2 is in an inverted V shape, and an opening in a shape of a straight line is formed in the top end of the non-return rubber sleeve. When the material enters from the bottom, the check rubber sleeve 4-2 can be flushed away, but the material above the check rubber sleeve is not easy to pass through the check rubber sleeve 4-2 from top to bottom. The liquid discharge port 12 is located slightly above the bottom of the non-return member 4, so that liquid material located above the non-return member 4 can be discharged through the liquid discharge port 12, leaving solid material. The side wall of the sampling tube is provided with a window 6, and the internal condition can be observed through the window 6.
As shown in fig. 1, the sampling tube sequentially comprises a tube opening 1, two connecting tubes 5 and a top cover 7 from bottom to top, the tube opening 1, the two connecting tubes 5 and the top cover 7 are sequentially connected in a sealing manner through threads, and the check valve plate 2 is arranged between the tube opening 1 and the first connecting tube 5; the filter screen 11 is installed between two connecting cylinders 5, and connecting cylinder 5 port department at top is provided with top cap 7, be provided with the connecting nozzle on the top cap 7, the connecting nozzle pass through connecting pipe 8 with negative pressure generating device 9 is connected. The window 6 is arranged on the connecting cylinder 5. The sampling tube is made of 304 stainless steel, and a sealing ring 10 is arranged at the joint of each section.
In this embodiment, the upper portion of the nozzle 1 is connected with a transition connecting cylinder 3, the check valve plate 2 is pressed between the nozzle 1 and the transition connecting cylinder 3, the transition connecting cylinder 3 is connected with a connecting cylinder 5, and the check component 4 is pressed between the transition connecting cylinder 3 and the connecting cylinder 5.
The negative pressure generating device 9 comprises an outer cylinder 9-1, a piston 9-2 arranged in the outer cylinder 9-1 and a pull rod 9-3 connected with the piston 9-2, wherein a handle 9-5 is arranged at the top end of the pull rod 9-3; the bottom of the outer cylinder 9-1 is provided with a bottom sealing head 9-6, and the bottom sealing head 9-6 is provided with a connecting nozzle for connecting with the connecting pipe 8. The top of the outer cylinder 9-1 is provided with a fixed cover 9-4, the fixed cover 9-4 is provided with a guide hole, and the pull rod 9-3 is arranged in the guide hole. The fixed cover 9-4 is provided with a vent hole.
The bottom of the outer cylinder 9-1 or the bottom sealing head 9-6 is provided with a one-way valve which can only exhaust, so that when the piston 9-2 moves upwards, negative pressure is generated in a cavity at the lower part of the outer cylinder 9-1, and further negative pressure is generated in the cavity of the sampling tube through the connecting pipe 8, and the effect of sucking materials is achieved; when the piston moves downwards, the one-way valve is opened to discharge the gas in the piston, so that the pressure is prevented from being transmitted into the sampling tube.
Preferably, the piston 9-2 is a check valve piston having the same structure and principle as the check valve plate 2. When the check valve piston is lifted upwards, the rubber sheet is tightly attached to the supporting plate, and when the check valve piston moves downwards, the rubber sheet is bent upwards to enable the piston to be ventilated.
When the sampling tube is used, the tube opening 1 at the bottom of the sampling tube stretches into a material to be sampled and detected, or the tube opening 1 is connected with a hose again, and the hose stretches into the material.
Under the condition that the sampling tube and the negative pressure generating device 9 are respectively connected to the two ends of the connecting tube 8, the piston 9-2 is quickly pushed and pulled by the pull rod 9-3, when the piston 9-2 moves upwards, negative pressure is generated in the cavity at the lower part of the outer cylinder 9-1, and then negative pressure is generated in the cavity of the sampling tube by the connecting tube 8, the rubber valve plate 2-2 bends and deforms upwards, so that the hole on the supporting plate 2-1 is opened, and materials are sucked into the sampling tube; the material passes through the non return part 4, and then upwards, and the solid material receives the restriction of filter screen 11 and can not reach sampling tube upper portion through the filter screen, can observe the condition of sample through the window, the volume of control sample simultaneously.
When the piston moves downwards, the one-way valve on the negative pressure generating device 9 is opened, the gas in the negative pressure generating device is discharged, the pressure is prevented from being transmitted into the sampling tube, the material in the sampling tube cannot flow back under the action of the check valve plate 2, and the material can be continuously sucked and accumulated along with the action of the negative pressure generating device 9, so that the purpose of sampling is achieved.
After the sampling is completed, the liquid material can be poured out first, then the joint of the sampling tube is opened, and the solid material is taken out. If only a solid part is required, the plug 13 at the drain 12 can be opened at the time of sampling, so that liquid can be drained from the drain 12, leaving only solid material.
As a further improvement, the middle part of the sampling tube can be provided with a check valve plate 2, and the check valve plate 2 is arranged above the filter screen 11, so that liquid materials can be taken out from the upper part of the sampling tube, and the mixed materials below can be directly discharged.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. Adjustable food detection sampler with solid-liquid classification function, and is characterized in that: the device comprises a sampling tube and a negative pressure generating device (9), wherein the sampling tube is connected with the negative pressure generating device (9) through a connecting tube (8);
The bottom of the sampling tube is provided with a check valve plate (2), and the check valve plate (2) enables materials to enter from the bottom of the sampling tube only;
a filter screen (11) is arranged in the middle of the sampling tube, and the filter screen (11) is detachably arranged in the sampling tube;
a liquid outlet (12) is formed in the side wall of the lower end of the sampling tube, a plug (13) is arranged on the liquid outlet (12), and a filter screen for preventing solid materials from being discharged is arranged in the liquid outlet (12);
the bottom of the sampling tube is also provided with a non-return part (4), the non-return part (4) comprises a circular fixing ring (4-1) and a non-return rubber sleeve (4-2) arranged on the fixing ring (4-1), the cross section of the non-return rubber sleeve (4-2) is in an inverted V shape, and the top end of the non-return rubber sleeve is provided with an opening in a shape like a Chinese character 'Ying';
The sampling tube sequentially comprises a tube opening (1), two connecting tubes (5) and a top cover (7) from bottom to top, wherein the tube opening (1) is sequentially connected with the two connecting tubes (5) and the top cover (7) through threads in a sealing manner, and the check valve plate (2) is arranged between the tube opening (1) and the first connecting tube (5); the filter screen (11) is installed between two connecting cylinders (5), a top cover (7) is arranged at the port of the connecting cylinder (5) at the top, a connecting nozzle is arranged on the top cover (7), and the connecting nozzle is connected with the negative pressure generating device (9) through a connecting pipe (8).
2. The adjustable food detection sampler with solid-liquid classification function according to claim 1, wherein: the negative pressure generating device (9) comprises an outer cylinder body (9-1), a piston (9-2) arranged in the outer cylinder body (9-1) and a pull rod (9-3) connected with the piston (9-2), a bottom sealing head (9-6) is arranged at the bottom of the outer cylinder body (9-1), and a connecting nozzle used for being connected with a connecting pipe (8) is arranged on the bottom sealing head (9-6).
3. The adjustable food detection sampler with solid-liquid classification function according to claim 2, characterized in that: the bottom of the outer cylinder body (9-1) or the bottom sealing head (9-6) is provided with a one-way valve which can only exhaust.
4. The adjustable food detection sampler with solid-liquid classification function according to claim 3, wherein: the top of the outer cylinder body (9-1) is provided with an exhaust hole, and the piston (9-2) is a one-way valve piston.
5. The adjustable food detection sampler with solid-liquid classification function according to claim 1, wherein: and a window (6) is arranged on the side wall of the sampling tube.
6. The adjustable food detection sampler with solid-liquid classification function according to claim 1, wherein: the check valve plate (2) comprises a supporting plate (2-1) and a rubber valve plate (2-2), wherein the supporting plate (2-1) is located below, a plurality of through holes are formed in the supporting plate, the central part of the rubber valve plate (2-2) is fixedly connected with the supporting plate (2-1), and the diameter of the rubber valve plate (2-2) is equal to the inner diameter of the sampling tube.
CN202010696887.8A 2020-07-20 2020-07-20 Adjustable food detection sampler with solid-liquid classification function Active CN111879553B (en)

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CN111879553B true CN111879553B (en) 2024-05-28

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205941528U (en) * 2016-08-16 2017-02-08 湖南现代环境科技股份有限公司 Multi -functional real -time detection groundwater sampling system
CN206945363U (en) * 2017-07-04 2018-01-30 亳州学院 One kind wine brewing pit mud sampler
CN108645650A (en) * 2018-05-08 2018-10-12 雷磊 A kind of universal food inspection device of solid-liquid
CN208026493U (en) * 2018-04-19 2018-10-30 江西花圣食品有限公司 A kind of food inspection rapid sampling attachment
CN109724838A (en) * 2017-10-27 2019-05-07 韦丽秋 Food inspection sampler
CN209132027U (en) * 2018-09-27 2019-07-19 中国地质大学(北京) A kind of portable water sampler
CN210863259U (en) * 2019-10-16 2020-06-26 江苏德普检测技术有限公司 Food detects quick sampling device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205941528U (en) * 2016-08-16 2017-02-08 湖南现代环境科技股份有限公司 Multi -functional real -time detection groundwater sampling system
CN206945363U (en) * 2017-07-04 2018-01-30 亳州学院 One kind wine brewing pit mud sampler
CN109724838A (en) * 2017-10-27 2019-05-07 韦丽秋 Food inspection sampler
CN208026493U (en) * 2018-04-19 2018-10-30 江西花圣食品有限公司 A kind of food inspection rapid sampling attachment
CN108645650A (en) * 2018-05-08 2018-10-12 雷磊 A kind of universal food inspection device of solid-liquid
CN209132027U (en) * 2018-09-27 2019-07-19 中国地质大学(北京) A kind of portable water sampler
CN210863259U (en) * 2019-10-16 2020-06-26 江苏德普检测技术有限公司 Food detects quick sampling device

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