CN213749132U

CN213749132U - Sampling device for detecting harmful substances in food

Info

Publication number: CN213749132U
Application number: CN202022874863.5U
Authority: CN
Inventors: 赵飞; 贾宏新; 张月辉; 黄丽娜; 刘霓; 曹轶男; 才凤; 王冠楠; 于晨; 邹海滢
Original assignee: Liaoning Inspection Examination and Certification Centre
Current assignee: Liaoning Inspection Examination and Certification Centre
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-20
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses a sampling device for food harmful substance detects, including the extraction tube, the lower extreme of extraction tube is connected and is installed a plurality of sample cell, and the extraction tube includes first body, and the first body endotheca is equipped with first piston, and the head rod is installed to the upper end of first piston, and the connecting plate is installed to the upper end of head rod, and first connecting pipe is installed to first body lower extreme, be provided with first check valve in the first connecting pipe, seted up first through-hole on the first piston, the second connecting pipe is installed to the upper end of first through-hole, be provided with the second check valve in the second connecting pipe, compare with prior art, the beneficial effects of the utility model are that: when a sample is extracted, a plurality of sample tubes are arranged at the lower end of the extraction tube according to the requirement of the number of the sample, and the first connecting rod and the connecting plate which pull the extraction tube drive the first piston to move upwards so as to suck the sample into the plurality of sample tubes.

Description

Sampling device for detecting harmful substances in food

Technical Field

The utility model relates to a food detects technical field, specifically is a sampling device is used in detection of food harmful substance.

Background

When the harmful substance of food detects, need detect contents such as heavy metal and other chemical elements in the food, food additive, pesticide residue, microorganism, because the door class that detects is more, consequently need draw more sample, so that detect the use, when drawing the sample, to liquid sample, need draw a plurality of pipes repeatedly, so that detect the use of time measuring, the whole time of drawing the sample is just longer, and the process of drawing is comparatively complicated troublesome, produce certain influence to detection work, for this reason, we propose a sampling device for the harmful substance detection of food.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a food harmful substance detects uses sampling device to solve the problem that proposes among the above-mentioned background art.

A sampling device for detecting harmful substances in food comprises an extraction tube, wherein the lower end of the extraction tube is connected with a plurality of sample tubes, and the sample tubes are used for storing samples;

the extraction pipe comprises a first pipe body, a first piston is sleeved in the first pipe body, a first connecting rod is installed at the upper end of the first piston, a connecting plate is installed at the upper end of the first connecting rod, the connecting plate and the first connecting rod can drive the first piston to move up and down, a first connecting pipe is installed at the lower end of the first pipe body, a first one-way valve is arranged in the first connecting pipe, the first one-way valve enables gas in the first connecting pipe to only flow from bottom to top, a first through hole is formed in the first piston, a second connecting pipe is installed at the upper end of the first through hole, a second one-way valve is arranged in the second connecting pipe, and the second one-way valve enables gas in the second connecting pipe to only flow from bottom to top;

the sample tube comprises a storage tube, a sample is stored in the storage tube, a second piston is sleeved in the upper end of the storage tube, a second through hole is formed in the center of the second piston, a third connecting tube is mounted at the upper end of the second through hole, a switch valve is arranged on the third connecting tube and can control the third connecting tube to be opened and closed, and the third connecting tube of the sample tube positioned at the uppermost end is connected with the lower end of the first connecting tube; and a fourth connecting pipe is arranged at the lower end of the storage pipe, and the upper and lower adjacent sample pipes are connected through the fourth connecting pipe and the third connecting pipe.

Preferably, a first female adapter is arranged at the lower end of the first connecting pipe, and the uppermost sample tube is screwed in the first female adapter through a third connecting pipe when being connected with the extraction pipe, so that the first connecting pipe and the third connecting pipe can be fixedly connected and disassembled conveniently; the lower extreme of fourth connecting pipe is provided with second female connection, two from top to bottom the third connecting pipe upper end spiro union is in second female connection during sample union, the fixed connection and the dismantlement between fourth connecting pipe and the third connecting pipe of being convenient for.

Preferably, a first rubber sleeve is arranged outside the first piston to improve the sealing performance between the first piston and the first pipe body, and a second rubber sleeve is arranged outside the second piston to improve the sealing performance between the second piston and the storage pipe.

Preferably, a ring plate is arranged in the upper end of the storage pipe and used for limiting a second piston in the storage pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

when a sample is extracted, a plurality of sample tubes are arranged at the lower end of the extraction tube according to the requirement of the number of the sample, and a first connecting rod and a connecting plate of the extraction tube are pulled to drive a first piston to move upwards so as to suck the sample into the plurality of sample tubes; when the number of the sample tubes is large, the first piston moves to the uppermost end position and then pushes downwards, at the moment, air in the first tube can be discharged from the second connecting tube, and the first piston is pulled again to suck the samples in the sample tubes;

after the sample is sucked, the switch valve is closed, the plurality of sample tubes are separated and taken down, and the second internal thread joint is plugged through the plug to ensure that the sample tubes are sealed; when the sample is used, the third connecting pipe is pressed down, the second piston is driven to move downwards through the third connecting pipe, and the sample is discharged from the storage pipe.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a structural sectional view of the present invention.

In the figure: 1. the extraction tube, 11, the first tube body, 12, the first piston, 121, the first through hole, 13, the first rubber sleeve, 14, the first connecting rod, 15, the connecting plate, 16, the first connecting tube, 161, the first female adapter, 17, the second connecting tube, 18, the first check valve, 19, the second check valve, 2, the sample tube, 21, the storage tube, 22, the second piston, 221, the second through hole, 23, the second rubber sleeve, 24, the annular plate, 25, the third connecting tube, 26, the switch valve, 27, the fourth connecting tube, 271, the second female adapter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a sampling device for detecting harmful substances in food comprises an extraction tube 1, wherein the lower end of the extraction tube 1 is connected with a plurality of sample tubes 2;

the extraction tube 1 comprises a first tube body 11, a first piston 12 is sleeved in the first tube body 11, a first rubber sleeve 13 is arranged outside the first piston 12 to improve the sealing property between the first piston 12 and the first pipe body 11, a first connecting rod 14 is installed at the upper end of the first piston 12, a connecting plate 15 is installed at the upper end of the first connecting rod 14, the connecting plate 15 and the first connecting rod 14 can drive the first piston 12 to move up and down, a first connecting pipe 16 is installed at the lower end of the first pipe 11, a first one-way valve 18 is arranged in the first connecting pipe 16, the first one-way valve 18 enables the gas in the first connecting pipe 16 to only flow from bottom to top, the first piston 12 is provided with a first through hole 121, the upper end of the first through hole 121 is provided with a second connecting pipe 17, a second one-way valve 19 is arranged in the second connecting pipe 17, and the second one-way valve 19 enables the gas in the second connecting pipe 17 to only flow from bottom to top; when a sample is extracted, a plurality of sample tubes 2 are arranged at the lower end of an extraction tube 1 according to the requirement of the number of the sample, and a first connecting rod 14 and a connecting plate 15 of the extraction tube 1 are pulled to drive a first piston 12 to move upwards so as to suck the sample into the plurality of sample tubes 2; when the number of the sample tubes 2 is large, the first piston 12 moves to the uppermost position and then pushes down, at this time, the air in the first tube 11 can be discharged from the second connection tube 17, and the first piston 12 is pulled again, so that the samples can be sucked into the plurality of sample tubes 2.

The sample tube 2 comprises a storage tube 21, a sample is stored in the storage tube 21, a second piston 22 is sleeved in the upper end of the storage tube 21, a second rubber sleeve 23 is arranged outside the second piston 22 to improve the sealing property between the second piston 22 and the storage tube 21, an annular plate 24 is arranged in the upper end of the storage tube 21, the annular plate 24 is used for limiting the second piston 22 in the storage tube 21, a second through hole 221 is formed in the center of the second piston 22, a third connecting tube 25 is arranged at the upper end of the second through hole 221, a switch valve 26 is arranged on the third connecting tube 25, the switch valve 26 can control the opening and closing of the third connecting tube 25, and the third connecting tube 25 of the sample tube 2 located at the uppermost end is connected with the lower end of the first connecting tube 16; a fourth connecting pipe 27 is installed at the lower end of the storage pipe 21, and two sample pipes 2 which are adjacent up and down are connected through the fourth connecting pipe 27 and the third connecting pipe 25; after the sample is sucked, the switch valve 26 is closed, the plurality of sample tubes 2 are separated and taken down, and the second female screw joint 161 is plugged through a plug to ensure that the sample tubes 2 are closed; when the sample is used, the third connecting pipe 25 is pressed, the second piston 22 is driven by the third connecting pipe 25 to move downwards, and the sample is discharged from the storage pipe 21.

A first female adapter 161 is arranged at the lower end of the first connecting pipe 16, and the uppermost sample tube 2 is screwed in the first female adapter 161 through a third connecting pipe 25 when being connected with the extraction tube 1, so that the first connecting pipe 16 and the third connecting pipe 25 can be fixedly connected and detached conveniently; the lower end of the fourth connecting pipe 27 is provided with a second female adapter 271, and the upper end of the third connecting pipe 25 is screwed in the second female adapter 271 when the upper and lower sample tubes 2 are connected, so that the fourth connecting pipe 27 and the third connecting pipe 25 can be fixedly connected and disassembled conveniently.

The working principle is as follows: when the utility model is used, a plurality of sample tubes 2 are arranged at the lower end of the extraction tube 1 according to the requirement of the number of samples, and the first connecting rod 14 and the connecting plate 15 which pull the extraction tube 1 drive the first piston 12 to move upwards so as to suck the samples into the sample tubes 2; when the number of the sample tubes 2 is large, the first piston 12 moves to the uppermost end position and then pushes downwards, at this time, air in the first tube body 11 can be discharged from the second connecting tube 17, and the first piston 12 is pulled again, so that the samples can be sucked into the plurality of sample tubes 2;

after the sample is sucked, the switch valve 26 is closed, the plurality of sample tubes 2 are separated and taken down, and the second female screw joint 161 is plugged through a plug to ensure that the sample tubes 2 are closed;

when the sample is used, the third connection tube 25 is pressed down, and the second piston 22 is driven by the third connection tube 25 to move downwards, so that the sample is discharged from the storage tube 21 for use.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a sampling device for food harmful substance detects, includes extraction tube (1), its characterized in that: the lower end of the extraction tube (1) is connected with a plurality of sample tubes (2);

the extraction tube (1) comprises a first tube body (11), a first piston (12) is sleeved in the first tube body (11), a first connecting rod (14) is installed at the upper end of the first piston (12), a connecting plate (15) is installed at the upper end of the first connecting rod (14), a first connecting tube (16) is installed at the lower end of the first tube body (11), a first one-way valve (18) is arranged in the first connecting tube (16), a first through hole (121) is formed in the first piston (12), a second connecting tube (17) is installed at the upper end of the first through hole (121), and a second one-way valve (19) is arranged in the second connecting tube (17);

the sample tube (2) comprises a storage tube (21), a second piston (22) is sleeved in the upper end of the storage tube (21), a second through hole (221) is formed in the center of the second piston (22), a third connecting tube (25) is installed at the upper end of the second through hole (221), a switch valve (26) is arranged on the third connecting tube (25), and the third connecting tube (25) of the sample tube (2) located at the uppermost end is connected with the lower end of the first connecting tube (16); and a fourth connecting pipe (27) is arranged at the lower end of the storage pipe (21), and the upper and lower adjacent sample pipes (2) are connected through the fourth connecting pipe (27) and the third connecting pipe (25).

2. The sampling device for detecting harmful substances in food according to claim 1, wherein: a first internal thread joint (161) is arranged at the lower end of the first connecting pipe (16), and the uppermost sample tube (2) is screwed in the first internal thread joint (161) through a third connecting pipe (25) when being connected with the extraction tube (1); the lower end of the fourth connecting pipe (27) is provided with a second internal thread joint (271), and the upper end of the third connecting pipe (25) is in threaded connection with the second internal thread joint (271) when the upper sample pipe and the lower sample pipe (2) are connected.

3. The sampling device for detecting harmful substances in food according to claim 1, wherein: a first rubber sleeve (13) is arranged outside the first piston (12), and a second rubber sleeve (23) is arranged outside the second piston (22).

4. The sampling device for detecting harmful substances in food according to claim 1, wherein: a ring plate (24) is arranged in the upper end of the storage pipe (21).