A sampling device

Abstract

The utility model provides a kind of sampling device, it includes storage cylinder, push rod, baffle, the storage cylinder includes by upper to lower sequentially connected conical cylinder section and straight cylinder section, the conical cylinder section with the coaxial arrangement of straight cylinder section;The baffle is horizontally arranged in the straight cylinder section, the periphery of the baffle with the inner wall of the straight cylinder section sliding fit;The lower end of the push rod is vertically connected with the top surface of the baffle, the upper end of the push rod is worn out the upper end port of the conical cylinder section;Interface for being connected with air inlet pipe is arranged on the conical cylinder section, one end of the air inlet pipe away from the interface is used for being connected with negative pressure air source;Multiple air holes are arranged on the baffle.The utility model can better realize the sampling of paper sample, improve experimental efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco detection technology, specifically relating to a sampling device. Background Technology

[0002] When analyzing and testing paper samples of cigarette paper, forming paper, and tipping paper used in cigarettes, it is necessary to cut the paper into fragments and then weigh them. Compared with other solid powder samples, paper fragments are not easy to sample and weigh, resulting in low experimental efficiency.

[0003] Therefore, how to design a sampling device to better achieve the sampling of paper samples and improve experimental efficiency has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device to solve the aforementioned technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A sampling device includes a storage cylinder, a push rod, and a partition. The storage cylinder comprises a conical section and a straight section connected sequentially from top to bottom, the conical section and the straight section being coaxially arranged. The partition is horizontally disposed within the straight section, and its periphery is slidably fitted with the inner wall of the straight section. The lower end of the push rod is vertically connected to the top surface of the partition, and the upper end of the push rod extends through the upper port of the conical section. The conical section is provided with an interface for connecting to an air inlet pipe, and the end of the air inlet pipe away from the interface is used for connecting to a negative pressure air source. The partition is provided with multiple vent holes.

[0007] Preferably, the upper end of the push rod is provided with a stop block that is perpendicularly connected to it.

[0008] Preferably, the stop is a cylindrical block.

[0009] Preferably, the stop block and the push rod together form a T-shaped structure.

[0010] Preferably, the negative pressure gas source is a negative pressure vacuum pump.

[0011] Preferably, both the straight section and the partition are circular in shape.

[0012] The beneficial effects of this utility model are as follows:

[0013] The sampling device of this utility model, when in use, brings the lower end of the storage cylinder close to the paper sample, activates the negative pressure air source, and the negative pressure suction generated by the negative pressure air source enters the conical cylinder section through the air inlet pipe and interface, and then the negative pressure suction through the vent hole draws the paper sample into the storage cylinder, thus conveniently realizing the sampling of the paper sample; at the same time, before sampling, the push rod pushes the partition to move up and down in the straight cylinder section, which can easily adjust the size of the cavity in the straight cylinder section below the partition, thereby adjusting the sampling amount of the paper sample, and thus achieving the effect of controlling the sampling amount to a certain extent. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of this utility model will be further described in detail with reference to the drawings.

[0015] Figure 1 A schematic diagram of the sampling device provided in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the lower end of the sampling device provided in an embodiment of the present invention.

[0017] Marked in the attached diagram:

[0018] 11. Conical section; 12. Straight section; 13. Interface;

[0019] 21. Push rod; 22. Stop block; 31. Partition plate; 32. Vent hole; 41. Air inlet pipe. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0021] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0022] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0023] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0024] like Figure 1and Figure 2 As shown in the figure, this utility model embodiment provides a sampling device, which includes a storage cylinder, a push rod 21, and a partition 31. The storage cylinder includes a conical section 11 and a straight section 12 connected sequentially from top to bottom, and the conical section and the straight section are coaxially arranged. The partition 31 is horizontally arranged in the straight section, and the periphery of the partition 31 is slidably engaged with the inner wall of the straight section. The lower end of the push rod 21 is vertically connected to the top surface of the partition 31, and the upper end of the push rod 21 extends out of the upper port of the conical section 11. The conical section is provided with an interface 13 for connecting to an air inlet pipe, and the end of the air inlet pipe 41 away from the interface 13 is used to connect to a negative pressure air source. The partition 31 is provided with a plurality of vent holes 32.

[0025] The sampling device provided in this embodiment of the present invention allows for convenient sampling of paper samples by placing the lower end of the storage cylinder close to the paper sample and activating the negative pressure air source. The negative pressure air generated by the negative pressure air source will enter the conical cylinder section through the air inlet pipe and interface, and then draw the paper sample into the storage cylinder through the air vent, thereby facilitating the sampling of the paper sample. At the same time, before sampling, the push rod 21 can be used to push the partition 31 to move up and down in the straight cylinder section 12, which can conveniently adjust the size of the cavity in the straight cylinder section below the partition, thereby adjusting the amount of paper sample taken and thus achieving a certain degree of control over the amount of sample taken.

[0026] Furthermore, the upper end of the push rod 21 is provided with a stop 22 that is vertically connected to it, thereby increasing the force-bearing area and improving the comfort when pushing the push rod.

[0027] Preferably, the stop 22 is a cylindrical block, which can better prevent the stop from scratching the inspection personnel.

[0028] Specifically, the stop block 22 and the push rod 21 together form a T-shaped structure.

[0029] Understandably, to prevent the partition from sliding down after reaching the desired position in the straight section, a transition fit or a small interference fit is used between the partition and the inner wall of the straight section. This only needs to ensure that pushing the push rod allows the partition to move up and down within the straight section. Similarly, a transition fit or a small interference fit can also be used between the push rod and the upper end of the conical section. The vent is a small hole, and its specific size can be set according to actual conditions, as long as the paper sample cannot pass through the vent and enter the conical section.

[0030] Preferably, the negative pressure air source is a negative pressure vacuum pump, which can generate negative pressure suction and then supply it into the conical section to achieve the suction of paper samples.

[0031] Specifically, both the straight cylindrical section 12 and the partition plate 31 are circular in shape.

[0032] When using the sampling device provided in this embodiment of the invention to sample paper fragments, the push rod can be pushed to adjust the position of the partition in the vertical direction of the straight section according to the required sample volume. For example, when the sample volume is large, the partition can be adjusted to the uppermost end of the straight section, i.e., the connection between the straight section and the conical section. When the sample volume is small, the partition can be adjusted to the lower part of the middle of the straight section. When the sample volume is between the two, the partition can be adjusted to the middle of the straight section. This principle achieves a certain degree of quantitative sampling, which can also be called semi-quantitative sampling. After the partition is adjusted to the required position, the negative pressure vacuum pump is started, and the paper fragment sample is sucked into the space below the partition in the straight section using negative pressure suction. Then, the storage cylinder is moved so that its lower end extends into or near the upper port of the pretreatment device such as the conical flask or centrifuge tube. The negative pressure vacuum pump is then turned off, and the paper sample will fall from the storage cylinder into the corresponding pretreatment device for subsequent operations.

[0033] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A sampling device, characterized in that, It includes a storage cylinder, a push rod, and a partition. The storage cylinder comprises a conical section and a straight section connected sequentially from top to bottom, with the conical section and the straight section coaxially arranged. The partition is horizontally arranged in the straight section, and its periphery slides against the inner wall of the straight section. The lower end of the push rod is vertically connected to the top surface of the partition, and the upper end of the push rod extends through the upper port of the conical section. The conical section is provided with an interface for connecting to an air inlet pipe, and the end of the air inlet pipe away from the interface is used to connect to a negative pressure air source. The partition is provided with multiple vent holes.

2. The sampling device according to claim 1, characterized in that, The upper end of the push rod is provided with a stop block that is perpendicularly connected to it.

3. The sampling device according to claim 2, characterized in that, The stop block is a cylindrical block.

4. The sampling device according to claim 3, characterized in that, The stop block and the push rod together form a T-shaped structure.

5. The sampling device according to claim 1, characterized in that, The negative pressure gas source is a negative pressure vacuum pump.

6. The sampling device according to any one of claims 1 to 5, characterized in that, Both the straight section and the partition are circular in shape.

Images