Triethylene diamine solid sampler

Abstract

The utility model relates to the technical field of samplers, and discloses a triethylene diamine solid sampler which comprises an outer pipe and an inner pipe, the outer pipe is formed by connecting a first section of outer pipe, at least one sampling outer pipe and a sample collecting pipe end to end, and the inner pipe is formed by connecting a first section of inner pipe and at least one sampling inner pipe end to end; an elliptical outer tube sampling hole is formed in the side wall of the sampling outer tube, and a rectangular inner tube sampling opening is formed in the side wall of the sampling inner tube. The outer tube and the inner tube are divided into a plurality of detachable screwed cylindrical tubes, can be automatically assembled to control the length of the sampler, are convenient to disassemble, clean and store after being disassembled, and can save space. The whole design is slender, and the conical solid conical head with smaller taper is arranged, so that the sampling device is favorable for being inserted into the surface of an agglomerated product and is suitable for triethylene diamine solid sampling.

Description

Technical Field

[0001] The utility model belongs to the technical field of samplers, in particular to a triethylenediamine solid sampler. Background Art

[0002] Triethylenediamine, also known as triethylenediamine, is a white or light yellow crystal with an ammonia smell. This product is an organic synthesis intermediate and a synthetic light-stable material. It is widely used in polyurethane foam, elastomers, plastic products and molding processes. It is also a polymer initiator and can be used as an ethylene polymerization catalyst and an ethylene oxide polymerization catalyst. Its derivatives can be used as corrosion inhibitors, emulsifiers, etc.

[0003] The finished product of triethylenediamine is highly hygroscopic. When exposed to air, it easily absorbs moisture in the air and deliquesces and agglomerates. The reason is that each molecule of triethylenediamine has two amino groups, which are functional groups with strong hygroscopicity. On the other hand, due to the special ring structure, the lone pair of electrons on the nitrogen atom is more exposed, which also provides conditions for water molecules to combine with it to form hydrogen bonds.

[0004] Since triethylenediamine will inevitably introduce some moisture during the dry packaging process, the moisture inside will migrate to the surface during the storage of the product, making the surface product in a quasi-solution state. The product in this quasi-solution state will continue to dissolve and recrystallize, and over time, a solid agglomeration layer will form on the surface of the product. And the longer the storage time, the stronger the agglomeration layer.

[0005] Since most of the moisture is concentrated in the agglomeration layer, the moisture content of the agglomeration layer on the surface of agglomerated triethylenediamine and the internal loose layer is very different. When sampling and analyzing, if only the surface triethylenediamine is taken for moisture content analysis, it is easy to misjudge qualified products as unqualified products. Therefore, the industry has certain requirements for deep sampling of triethylenediamine.

[0006] At present, the existing samplers on the market are mainly double-layer sleeve structure samplers. The main disadvantages of the samplers are that the sleeve cross-section is relatively thick, the sampling cone head is not conical enough (the taper of the commercially available sampler is: 1:1.5200), and it is difficult to insert into the agglomerated solid surface without external force. In addition, this double-layer sleeve structure is not easy to disassemble and difficult to clean; the body of the entire sampler is long, which takes up space, and is not easy to store and easy to accumulate dust. For example, the "Solid Powder Sampler" disclosed in patent number CN205246371U and the "Solid Powder Sampler" in CN202122026125X both include a hollow tube with a top opening and a sampling rod. The sampling rod is located in the hollow tube, and the feed port is spaced along the length direction of the hollow tube to realize the extraction of powder. However, the hollow tube and the sampling rod in the schemes adopted by both are of fixed length, and the sampling depth cannot be adjusted according to the thickness of the sample powder. In addition, a separate sample storage box is set under each sampling port, which has the defects of complex structure and inconvenient cleaning. At the same time, it is difficult to meet the demand for triethylenediamine solid sampling. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a triethylenediamine solid sampler which has a simple structure and is convenient to use.

[0008] In order to solve the above technical problems, the utility model provides a triethylenediamine solid sampler, comprising an outer tube and an inner tube, wherein the outer tube is formed by connecting a first section of an outer tube, at least one sampling outer tube and a sample collection tube end to end, and the inner tube is formed by connecting a first section of an inner tube and at least one sampling inner tube end to end;

[0009] The first section outer tube and the sampling outer tube, the sampling outer tubes, the sampling outer tube and the sample collection tube, the first section inner tube and the sampling inner tube, and the sampling inner tubes are all detachably connected;

[0010] An elliptical outer tube sampling hole is provided on the side wall of the sampling outer tube, and a rectangular inner tube sampling port is provided on the side wall of the sampling inner tube.

[0011] As an improvement of a triethylenediamine solid sampler of the utility model:

[0012] A rotating hole is provided on the tube wall of the first section outer tube, and a notch is provided on the first section outer tube above the rotating hole.

[0013] As a further improvement of the triethylenediamine solid sampler of the utility model:

[0014] A sampling handle is arranged on the top of the first section inner tube, a rotating buckle is arranged on the upper tube wall of the first section inner tube, and both the rotating buckle and the sampling handle are fixedly connected to the first section inner tube.

[0015] As a further improvement of the triethylenediamine solid sampler of the utility model:

[0016] The lower part of the sample collection tube is a conical head, and the taper of the conical head is not greater than 1:1.7857.

[0017] As a further improvement of the triethylenediamine solid sampler of the utility model:

[0018] The lengths of the sample outer tube and the sampling inner tube are consistent.

[0019] As a further improvement of the triethylenediamine solid sampler of the utility model:

[0020] After the inner tube is inserted into the outer tube, the axes of the outer tube sampling hole and the inner tube sampling port are on the same straight line.

[0021] As a further improvement of the triethylenediamine solid sampler of the utility model:

[0022] The rotating buckle is located at the bottom of the rotating hole, the outer tube sampling hole and the inner tube sampling port are offset from each other up and down, the rotating buckle is located at the upper part of the rotating hole, and the outer tube sampling hole and the inner tube sampling port overlap each other.

[0023] The beneficial effects of the utility model are mainly reflected in:

[0024] 1. The sampling holes of the outer tube and the inner tube of the utility model are symmetrically arranged to increase the sampling flow rate and reduce the sampling time.

[0025] 2. The outer tube and the inner tube of the utility model are divided into a plurality of detachable screw-connected cylindrical tubes, which can be assembled spontaneously to control the length of the sampler, are easy to disassemble and clean, and are easy to store after disassembly, thus saving space.

[0026] 3. The traditional inner and outer tube sampler's rotating sampling and then rotating closing mode is changed to a mode of sampling by pulling the inner tube. The operation range is smaller, less likely to get stuck, and easy to use. At the same time, it can reduce the degree of damage to the crystal form of triethylenediamine particles caused by the friction between the inner and outer tubes, which is conducive to evaluating the uniformity of triethylenediamine product particles.

[0027] 4. The overall design of the sampler of the utility model is slender, and a solid conical head with a small taper is provided, which is convenient for inserting into the surface of the agglomerated product.

[0028] 5. The rotating hole of the utility model cooperates with the rotating buckle to integrate the outer shell and the inner tube, so that the sampler connection is stable. A branch outlet is arranged on the limited rotating hole, which is conducive to the separation of the inner tube and the outer shell.

[0029] 6. The utility model is provided with a sample collecting tube with a large volume at the bottom, which is conducive to accommodating samples. The collecting tube is detachable, which is conducive to the transfer of samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0031] Figure 1 It is a schematic diagram of the outer tube of the sampler of the utility model;

[0032] Figure 2 It is a schematic diagram of the inner tube of the sampler of the utility model. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto:

[0034] Embodiment 1: A triethylenediamine solid sampler, comprising an outer tube and an inner tube, both of which are composed of multiple sections. The outer tube is composed of a first section outer tube 1, a plurality of sampling outer tubes 8 and a sample collection tube 5 from top to bottom. The inner tube is composed of a first section inner tube 16 and a plurality of sampling inner tubes 17 from top to bottom. The lengths of the sampling outer tube 8 and the sampling inner tube 17 are the same. Figure 1 and 2 The example shown is a triethylenediamine solid sampler using three sampling outer tubes 8 and a sampling inner tube 17. In actual operation, different numbers of sampling outer tubes 8 can be connected according to the depth of the solid sample to construct triethylenediamine solid samplers of different lengths to control the sampling position.

[0035] The connections between the first section outer tube 1 and the sampling outer tube 8, between the sampling outer tubes 8, between the sampling outer tube 8 and the sample collecting tube 5, between the first section inner tube 16 and the sampling inner tube 17, and between the sampling inner tubes 17 are all detachable. For example, the lower openings of the first section outer tube 1 and the first section inner tube 16 are both provided with internal threads; both ends of the sampling outer tube 8 and the sampling inner tube 17 are open, and the upper openings are provided with internal threads, and the lower openings are provided with external threads; the upper opening of the sample collecting tube 5 is provided with external threads, so that the first section outer tube 1, the sampling outer tube 8 and the sample collecting tube 5 are connected to form an outer tube through threads at their ends, and the first section inner tube 16 and the sampling inner tube 17 are also connected to form an inner tube through threads at their ends, which is convenient for disassembly and cleaning. The inner diameter of the outer tube and the outer diameter of the inner tube can be matched with tolerances.

[0036] A rectangular rotating hole 7 is provided on one side (on the tube wall) of the first section outer tube 1, and a notch 9 is provided on the first section outer tube 1 above the rotating hole 7 to connect the rotating hole 7 with the outside of the first section outer tube 1. A T-shaped sampling handle 11 is provided on the top of the first section inner tube 16, and the sampling handle 11 is fixedly connected to the first section inner tube 16 by welding or other means to drive the inner tube to rotate. A rotating buckle 12 is provided on the side wall of the upper part of the first section inner tube 16, and the rotating buckle 12 is fixedly connected to the first section inner tube 16 by welding or other means. When the inner tube is inserted into the outer tube, the rotating buckle 12 enters the rotating hole 7 from the notch 9.

[0037] An elliptical outer tube sampling hole 2 is provided on the side wall of the sampling outer tube 8, and after the first section of the outer tube 1 and the sampling outer tube 8 are screwed together, the outer tube sampling hole 2 and the axis of the rotating hole 7 are in the same straight line. A rectangular inner tube sampling port 13 is provided on the side wall of the sampling inner tube 17, and after the sampling inner tube 17 and the first section of the inner tube 16 are screwed together, the inner tube sampling port 13 and the axis of the rotating buckle 12 are in the same straight line. After the inner tube is inserted into the outer tube, the axes of the outer tube sampling hole 2 and the inner tube sampling port 13 are in the same straight line, and the rotating buckle 12 is inserted into the rotating hole 7. When the rotating buckle 12 moves downward to the bottom side of the rotating hole 7, the outer tube sampling hole 2 and the inner tube sampling port 13 are misaligned up and down, separated from each other to prevent the sample from entering. When the rotating buckle 12 moves upward to the upper side of the rotating hole 7, the outer tube sampling hole 2 and the inner tube sampling port 13 completely overlap, so that the sample can fall into the sample collection tube 5 after passing through the outer tube sampling hole 2 and the inner tube sampling port 13. The operation range is small, it is not easy to get stuck, and it is easy to use. Compared with rotating the inner tube left and right, the method of plugging and pulling the inner tube up and down makes the outer tube sampling hole 2 and the inner tube sampling port 13 misaligned, separated or overlapped. The solid sample that falls between the inner tube and the outer tube is more likely to fall due to gravity when the inner tube and the outer tube move up and down, which better avoids the friction between the inner tube and the outer tube, reduces the degree of damage to the crystal form of the triethylenediamine particles caused by the friction between the inner tube and the outer tube, and is conducive to evaluating the uniformity of the triethylenediamine product particles.

[0038] The lower part of the sample collecting tube 5 is a solid conical head 6 (the conical head 6 is a part of the sample collecting tube 5), which is convenient for inserting into the sample solid and is used to seal the lower part of the sample collecting tube 5. According to the definition of taper, the smaller the taper value, the sharper the conical head, so that it can be inserted better, so the taper of the conical head 6 is not greater than 1:1.7857. The upper inner cavity of the sample collecting tube 5 is used to accommodate the sample taken.

[0039] The specific method of using the utility model is:

[0040] 1. Screw and tighten the first section outer tube 1, three sampling outer tubes 8 and the sample collection tube 5 to form an outer tube. Figure 1 The first section of the inner tube 16 and the three sampling inner tubes 17 are also screwed end to end and tightened into an inner tube, such as Figure 2 shown.

[0041] 2. After the inner tube is inserted into the outer tube, the rotating buckle 12 is located in the rotating hole 7. The inner tube is moved downward by the sampling handle 11 so that the rotating buckle 12 is located on the bottom side of the rotating hole 7. The outer tube sampling hole 2 and the inner tube sampling port 13 are misaligned and separated, and the sample cannot enter the sampler.

[0042] 3. Insert the sampler into the sample to be taken until the uppermost sampling hole 2 is completely buried by the sample; pull the sampling handle 11 upward so that the rotating buckle 12 is located on the upper part of the rotating hole 7, and the outer tube sampling hole 2 and the inner tube sampling port 13 completely overlap; under the action of gravity, the sample enters the sampler through the outer shell sampling hole 2 and the inner tube sampling hole 13 in turn, and slides into the sample collection tube 5.

[0043] 4. Press the T-handle 11 downwards again to return the rotating buckle 12 to the bottom side of the rotating hole 7, so that the outer tube sampling hole 2 and the inner tube sampling port 13 are misaligned, and the sample cannot enter the sampler. Pull out the sampler, unscrew the sample collection tube 5, and the required test sample is obtained.

[0044] 5. Disassemble the sampler into various small parts (i.e. the first inner tube 16, three sampling inner tubes 17, the first outer tube 1, three sampling outer tubes 8 and the sample collection tube 5), put them into the cleaning tank for cleaning, put the cleaned small parts of the sampler into the oven for drying, and store them in an ash-free environment for the next sampling.

[0045] Finally, it should be noted that the above examples are only some specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A triethylenediamine solid sampler, characterized in that: The device comprises an outer tube and an inner tube, wherein the outer tube is formed by connecting a first section of an outer tube (1), at least one sampling outer tube (8) and a sample collection tube (5) end to end, and the inner tube is formed by connecting a first section of an inner tube (16) and at least one sampling inner tube (17) end to end; The first section outer tube (1) and the sampling outer tube (8), the sampling outer tubes (8), the sampling outer tube (8) and the sample collection tube (5), the first section inner tube (16) and the sampling inner tube (17), and the sampling inner tubes (17) are all detachably connected; An elliptical outer tube sampling hole (2) is provided on the side wall of the sampling outer tube (8), and a rectangular inner tube sampling port (13) is provided on the side wall of the sampling inner tube (17).

2. A triethylenediamine solid sampler according to claim 1, characterized in that: A rotating hole (7) is provided on the tube wall of the first section outer tube (1), and a notch (9) is provided on the first section outer tube (1) above the rotating hole (7).

3. A triethylenediamine solid sampler according to claim 2, characterized in that: A sampling handle (11) is provided at the top of the first section inner tube (16), a rotating buckle (12) is provided on the upper tube wall of the first section inner tube (16), and the rotating buckle (12) and the sampling handle (11) are both fixedly connected to the first section inner tube (16).

4. A triethylenediamine solid sampler according to claim 3, characterized in that: The lower part of the sample collection tube (5) is a conical head (6), and the taper of the conical head (6) is not greater than 1:1.7857.

5. A triethylenediamine solid sampler according to claim 4, characterized in that: The lengths of the sample outer tube (8) and the sampling inner tube (17) are consistent.

6. A triethylenediamine solid sampler according to claim 5, characterized in that: After the inner tube is inserted into the outer tube, the axes of the outer tube sampling hole (2) and the inner tube sampling port (13) are on the same straight line.

7. A triethylenediamine solid sampler according to claim 6, characterized in that: The rotating buckle (12) is located at the bottom of the rotating hole (7), the outer tube sampling hole (2) and the inner tube sampling port (13) are offset from each other up and down, the rotating buckle (12) is located at the upper part of the rotating hole (7), and the outer tube sampling hole (2) and the inner tube sampling port (13) overlap each other.

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