Portable solid sampling tube cutter

Abstract

The utility model discloses a portable solid sampling tube cutter which is characterized in that an upper clamping arm (1) is rotationally connected with a lower clamping arm (2) through mutual connection of an upper connecting end (3) and a lower connecting end (4), two side surfaces of the upper clamping arm (1) are respectively an upper clamping surface (5) and an upper handheld surface (7), and two side surfaces of the lower clamping arm (2) are respectively a lower clamping surface (6) and a lower handheld surface (8). A spring (11) is installed between an upper spring hole (9), close to the upper connecting end (3), of the tail of the upper clamping face (5) and a lower spring hole (10), close to the lower connecting end (4), of the tail of the lower clamping face (6), a sampling pipe cutting device is arranged between the middle of the upper clamping face (5) and the middle of the lower clamping face (6), and an activated carbon solution sealing head cutting device is arranged between the head of the upper clamping face (5) and the head of the lower clamping face (6). The utility model not only has wide application range, but also is safe and reliable in use.

Description

Technical Field

[0001] The utility model relates to a sampling tube cutter, in particular to a portable solid sampling tube cutter. Background Art

[0002] Solid adsorbent sampling tubes are widely used in environmental air monitoring and occupational health monitoring. They are mainly used to collect gaseous and vapor toxic substances. Solid adsorbent tubes include activated carbon tubes, silicone tubes, molecular sieve tubes, and polymer porous microsphere tubes. Commonly used activated carbon tubes are mainly used to collect non-polar and weakly polar compounds in the air, such as triphenyl, etc.; silicone tubes are mainly used to collect polar and medium-polar compounds in the air, such as methanol, etc. A certain amount of solid adsorbent is placed in a glass tube of a certain size, sealed at both ends, and covered with a rubber cap to make a solid adsorbent tube. When sampling, bring the solid sampling tube to the work site, use a cutting tool to cut off both ends of the fusion seal, and then connect it to the gas sampler. The harmful substances in the air are adsorbed on the solid adsorbent after passing through the sampling tube. After the collection is completed, seal the two ends of the sampling tube with rubber caps and transport it back to the laboratory. The laboratory staff cuts the glass tube, pours the adsorbent in the glass tube into the desorption bottle, adds a certain amount of desorbent, and shakes on the oscillator for 30 minutes to desorb the test object. Then, the sample is analyzed to determine the content of harmful substances, and the air quality or occupational health evaluation of the air in the occupational health workplace can be performed. The glass tube needs to be cut before sampling and measurement. How to cut it quickly and efficiently is an urgent problem to be solved by monitoring technicians. Currently, there are several known methods for cutting glass sampling tubes: the first is pliers tools. At the sampling site, the main problem with using pliers to crush the fused seals at both ends of the solid adsorption tube is that after the glass is crushed, the debris is easy to splash and may fall on the ground, shoes, and especially on the drug and food production workshops that have requirements for cleanliness, which may easily cause the risk of product glass slag; after crushing with pliers, the cut is uneven, which is easy to hurt the hands when connecting the sampling tube to the air sampler; in addition, after the sample is collected, the rubber caps need to be sealed at both ends, which is also easy to puncture the rubber caps, resulting in a loose seal, which is easy to cause contamination during transportation and affect the accuracy of the sample measurement results. In addition, pliers can only be used to crush thin-diameter fused seals during on-site sampling, and cannot be used to cut the glass tube from the middle during laboratory testing.

[0003] The first one is a glass sampling tube with frosted sections at both ends of the sampling tube, which is disclosed in patent CN203275140U. It is an improvement on the specific sampling tube itself, but it cannot solve the problem of cutting sampling tubes of different glasses during on-site sampling. The limitation of use is very small. At present, the frosted sections are not widely used, and the glass sampling tubes on the market still use an integrated straight tube design. The second one uses a stainless steel needle to cut the sampling tube, but this method can only break the sampling tube violently during laboratory testing, and cannot be used to cut off the fused seal head during on-site sampling. Strictly speaking, this operation is not to cut the sampling tube, but to slowly break the sampling tube from the head and take out the adsorbent in the sampling tube. Therefore, gloves need to be worn when operating this method to prevent hand injuries. The breaking force is large, which will also cause glass fragments to splash, posing a safety hazard to the experimenter, and it is also easy to cause the adsorbent to spill, resulting in low sample test results. The third one is a medical grinding wheel tool. The disadvantages of medical grinding wheels are that they are easy to wear, the grinding wheel is thick and not sharp, and when the medical grinding wheel is used to cut the sampling tube, a lot of grinding wheel chips will fall off during friction, generating dust, and the experimenter needs to use a lot of force to rub out scratches, sometimes crushing the glass sampling tube, causing the sample to be scrapped, and the cut edge is not smooth, which is easy to hurt the hand. Medical grinding wheels can only be used to cut sampling tubes during laboratory testing, and during field sampling, because the length of the glass tube fusion seal is only 10mm, the thickness is about 0.5-1mm, and the surface of the fusion seal is an inclined cone instead of a flat plane, which is not convenient for cutting scratches. The fourth patent CN213165574U designs an activated carbon tube cutter with dust suppression function, but this type of cutter uses atomized water spray to suppress the cutting dust during cutting, but the water sprayed by this structure is easy to contaminate the solid adsorbent in the sampling tube, causing the adsorption capacity of the adsorbent to decrease or even disappear, resulting in unreliable results for the determination of harmful substances. Utility Model Content

[0004] The utility model provides a portable solid sampling tube cutter, which has a wide application range and is safe and reliable in use.

[0005] The utility model adopts the following technical scheme: a portable solid sampling tube cutter, which comprises an upper clamp arm and a lower clamp arm, one end of the upper clamp arm is set as an upper connecting end, and one end of the lower clamp arm is set as a lower connecting end, the upper clamp arm is connected to the lower clamp arm through the mutual connection of the upper connecting end and the lower connecting end to form a rotational connection, one side of the upper clamp arm is an upper clamping surface, and the other side is an upper hand-gripping surface, one side of the lower clamp arm is set as a lower clamping surface, and the other side is a lower hand-gripping surface, the upper clamping surface and the lower clamping surface are both planes and the upper clamping surface is opposite to the lower clamping surface, an upper spring hole is provided at the tail of the upper clamping surface near the upper connecting end, a lower spring hole is provided at the tail of the lower clamping surface near the lower connecting end, a spring is installed between the upper spring hole and the lower spring hole, a sampling tube cutting device is provided between the middle of the upper clamping surface and the middle of the lower clamping surface, and an activated carbon dissolving head cutting device is provided between the head of the upper clamping surface and the head of the lower clamping surface.

[0006] Furthermore, the sampling tube cutting device includes a semicircular upper clamping groove I located on the upper clamping surface, a semicircular lower clamping groove I located on the lower clamping surface, and a cutting wheel I. The upper clamping groove I is opposite to the lower clamping groove I, and a limiting groove is provided on one side of the upper clamping groove I. A cutting wheel mounting groove I is provided on the inner surface of the groove on one side of the lower clamping groove I. The cutting wheel I is installed in the cutting wheel mounting groove I and connected to the side of the cutting wheel mounting groove I. The limiting groove corresponds to the cutting wheel mounting groove I. After the upper clamping surface contacts the lower clamping surface, the upper clamping groove I and the lower clamping groove I form a sampling tube cutting hole.

[0007] Further, the activated carbon melting head cutting device includes an upper clamping groove II located on the upper clamping surface, a lower clamping groove II located on the lower clamping surface, and a cutting wheel II. The upper clamping groove II is opposite to the lower clamping groove II, and the shape of the upper clamping groove II corresponds to the external contour of the activated carbon melting head. The shape of the lower clamping groove II corresponds to the external contour of the activated carbon melting head. A cutting wheel mounting groove II is opened on the inner surface of the groove on one side of the lower clamping groove II. The cutting wheel II is installed in the cutting wheel mounting groove II and connected to the side of the cutting wheel mounting groove II. After the upper clamping surface contacts the lower clamping surface, the upper clamping groove II and the lower clamping groove II form an activated carbon melting head cutting hole.

[0008] Furthermore, the upper clamping arm and the lower clamping arm are made of polyethylene resin.

[0009] Furthermore, the diameter of the limiting groove is greater than the diameter of the upper clamping groove I, and the limiting groove and the upper clamping groove I are in a stepped shape.

[0010] Furthermore, the cutting wheel I is configured as a diamond glass cutting wheel.

[0011] Furthermore, the cutting wheel II is configured as a diamond glass cutting wheel.

[0012] Furthermore, the upper grip surface and the lower grip surface are both configured as arc-shaped surfaces.

[0013] The utility model has the following beneficial effects: after adopting the above technical scheme, the utility model is provided with a sampling tube cutting device between the middle of the upper clamping surface and the middle of the lower clamping surface, and an activated carbon dissolving head cutting device is provided between the head of the upper clamping surface and the head of the lower clamping surface, so that it can be used to cut the activated carbon dissolving head of the sampling tube during on-site sampling, and can also be used to cut the sampling tube during laboratory testing. It has a wide range of applications, high universal performance, and can be applied to multiple occasions. In addition, the utility model uses the characteristics of glass cutting to make tiny cuts to the glass tube through the cutting wheel I. When cutting, it has the characteristics of shallow cutting marks, no dust, no glass debris, smooth cutting surface, no hand injury, small force, easy to break, etc., so that it has the characteristics of safety and reliability when in use, and is not easy to spill adsorbents, etc., and has high safety performance. In addition, it also reduces the labor intensity of on-site samplers and experimenters, improves the efficiency of sample making, and saves production costs. The utility model adopts a diamond glass cutting wheel, so that the limit of the cutting hole of the sampling tube or the cutting hole of the activated carbon dissolving head can be cut along the glass surface for a circle, producing a cut mark of about 0.1-0.2mm, and the width of the cut is less than 0.1mm, which can be easily broken, thereby reducing the generation of glass fragments and no noise. With the help of the limit groove on the cutter, the cutting effect is good. The utility model has a simple structure and a light product weight of about 42g, which is easy to carry, does not occupy the use space, and saves transportation costs. The utility model is provided with a limit groove on one side of the upper clamping groove I, the limit groove corresponds to the knife wheel installation groove I, the diameter of the limit groove is larger than the diameter of the upper clamping groove I, and the limit groove and the upper clamping groove I are stepped, so that the position where the mouth of the sampling tube and the tube body are combined can be limited by the limit groove, thereby improving the stability during cutting. The utility model is provided with an upper spring hole at the tail of the upper clamping surface near the upper connecting end, and a lower spring hole at the tail of the lower clamping surface near the lower connecting end, and a spring is installed between the upper spring hole and the lower spring hole, so that elastic force can be generated between the upper clamping arm and the lower clamping arm, thereby improving the clamping effect and saving effort for operators when inserting and removing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the upper clamping surface of the utility model.

[0017] Figure 3It is a structural schematic diagram of the lower clamping surface of the utility model. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] exist Figure 1 The utility model provides a portable solid sampling tube cutter, which includes an upper clamp arm 1 and a lower clamp arm 2. The upper clamp arm 1 and the lower clamp arm 2 of this embodiment are made of polyethylene resin. One end of the upper clamp arm 1 is set as an upper connecting end 3, and one end of the lower clamp arm 2 is set as a lower connecting end 4. The upper clamp arm 1 is connected to the lower clamp arm 2 by connecting the upper connecting end 3 and the lower connecting end 4. In this embodiment, the upper connecting end 3 is connected to the lower connecting end 4 through a rotating shaft. Figure 2 and Figure 3In the embodiment, one side of the upper clamp arm 1 is an upper clamp surface 5, and the other side is an upper hand grip surface 7. One side of the lower clamp arm 2 is set to a lower clamp surface 6, and the other side is a lower hand grip surface 8. The upper hand grip surface 7 and the lower hand grip surface 8 of this embodiment are both set to arcuate surfaces. The upper clamp surface 5 and the lower clamp surface 6 are both planes and the upper clamp surface 5 is opposite to the lower clamp surface 6. An upper spring hole 9 is provided at the tail of the upper clamp surface 5 near the upper connecting end 3, and a lower spring hole 10 is provided at the tail of the lower clamp surface 6 near the lower connecting end 4. A spring 11 is installed between the upper spring hole 9 and the lower spring hole 10. A sampling tube cutting device is provided between the middle of the upper clamp surface 5 and the middle of the lower clamp surface 6. An activated carbon dissolving head cutting device is provided between the head of the upper clamping surface 5 and the head of the lower clamping surface 6. The sampling tube cutting device of this embodiment includes a semicircular upper clamping groove Ⅰ12 located on the upper clamping surface 5, a semicircular lower clamping groove Ⅰ13 located on the lower clamping surface 6, and a cutting wheel Ⅰ14. The cutting wheel Ⅰ14 of this embodiment is configured as a diamond glass cutting wheel. The upper clamping groove Ⅰ12 is opposite to the lower clamping groove Ⅰ13. A limiting groove 15 is provided on one side of the upper clamping groove Ⅰ12. A cutting wheel mounting groove Ⅰ16 is provided on the inner surface of the groove on one side of the lower clamping groove Ⅰ13. The cutting wheel Ⅰ14 is installed in the cutting wheel mounting groove Ⅰ16 and is rotatably connected to the side of the cutting wheel mounting groove Ⅰ16. The cutting wheel Ⅰ14 of this embodiment is rotatably connected to the side of the cutting wheel installation groove Ⅰ16 through a pin shaft, and the limiting groove 15 corresponds to the cutting wheel installation groove Ⅰ16. After the upper clamping surface 5 contacts the lower clamping surface 6, the upper clamping groove Ⅰ12 and the lower clamping groove Ⅰ13 form a sampling tube cutting hole. The activated carbon melting head cutting device of this embodiment includes an upper clamping groove Ⅱ17 located on the upper clamping surface 5, a lower clamping groove Ⅱ18 located on the lower clamping surface, and a cutting wheel Ⅱ20. The cutting wheel Ⅱ20 of this embodiment is set as a diamond glass cutting wheel. The upper clamping groove Ⅱ17 is opposite to the lower clamping groove Ⅱ18, and the shape of the upper clamping groove Ⅱ17 is consistent with the external contour of the activated carbon melting head. Correspondingly, the shape of the lower clamping groove Ⅱ18 corresponds to the external contour of the activated carbon melting head. A cutter wheel mounting groove Ⅱ19 is opened on the inner surface of the groove on one side of the lower clamping groove Ⅱ18. The cutting wheel Ⅱ20 is installed in the cutter wheel mounting groove Ⅱ19 and is rotatably connected to the side of the cutter wheel mounting groove Ⅱ19. The cutting wheel Ⅱ20 of this embodiment is rotatably connected to the side of the cutter wheel mounting groove Ⅱ19 through a pin shaft. After the upper clamping surface 5 contacts the lower clamping surface 6, the upper clamping groove Ⅱ17 and the lower clamping groove Ⅱ18 form an activated carbon melting head cutting hole. The diameter of the limiting groove 15 of this embodiment is larger than the diameter of the upper clamping groove Ⅰ12, and the limiting groove 15 and the upper clamping groove Ⅰ12 are stepped.

[0020] The use process of the utility model is:

[0021] 1. When sampling is required on site, insert one end of the activated carbon melt seal into the activated carbon melt seal cutting hole formed between the upper clamping groove Ⅱ17 on the upper clamping surface 5 and the lower clamping groove Ⅱ18 on the lower clamping surface 6. Hold the upper grip surface 7 of the upper clamping arm 1 and the lower grip surface 8 of the lower clamping arm 2 by hand, and rotate the activated carbon tube clockwise for one circle by hand. The cutting wheel Ⅱ20 cuts a scratch with a depth of 0.1-0.2mm and a width of less than 0.1mm around the activated carbon tube. Pull the activated carbon tube out of the hole about 0.5mm and gently pull it down. The activated carbon melt seal breaks, cuts flat and without debris, and remains in the activated carbon melt seal cutting hole. It can be discarded. The activated carbon melt seal at the other end is also cut in the same way. After the melt seals at both ends of the activated carbon tube are cut off, the end containing the solid adsorbent is connected to the air sampler for sampling. After the sampling is completed, seal the two ends with rubber caps, fill in the sample information sampling form, sample number, etc., and transport it back to the laboratory for measurement as required.

[0022] 2. When it is needed for laboratory use, insert the short end of the sampling tube containing the solid adsorbent into the sampling tube cutting hole formed between the upper clamping groove Ⅰ12 on the upper clamping surface 5 and the lower clamping groove Ⅰ13 on the lower clamping surface 6, align the cutting wheel Ⅰ14 at the glass wool at the position where cutting is required, hold the upper grip surface 7 of the upper clamping arm 1 and the lower grip surface 8 of the lower clamping arm 2 by hand, and rotate the sampling tube clockwise for one circle by hand. The cutting wheel Ⅰ14 cuts a scratch with a depth of 0.1-0.2mm and a width of less than 0.1mm around the sampling tube. Pull the sampling tube out of the hole about 0.5mm slightly, gently pull it down, and the sampling tube will break. The cut is flat and without debris. Take out the glass wool, insert the sampling tube into the desorption bottle, pour out the solid adsorbent activated carbon in the glass tube, add an appropriate amount of desorbent, and oscillate on the oscillator for 30 minutes. After the desorption is completed, the poison content is measured on the machine.

[0023] Without limitation to this, any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope defined in the claims.

Claims

1. A portable solid sampling tube cutter, characterized in that It comprises an upper clamping arm (1) and a lower clamping arm (2), one end of the upper clamping arm (1) is arranged as an upper connecting end (3), one end of the lower clamping arm (2) is arranged as a lower connecting end (4), the upper clamping arm (1) is rotatably connected to the lower clamping arm (2) by connecting the upper connecting end (3) and the lower connecting end (4), one side of the upper clamping arm (1) is an upper clamping surface (5), and the other side is an upper hand gripping surface (7), one side of the lower clamping arm (2) is arranged as a lower clamping surface (6), and the other side is a lower hand gripping surface (8), the upper clamping surface (5) and the lower clamping surface (6) are connected to each other. Both are planes and the upper clamping surface (5) is opposite to the lower clamping surface (6). An upper spring hole (9) is provided at the tail of the upper clamping surface (5) near the upper connecting end (3), and a lower spring hole (10) is provided at the tail of the lower clamping surface (6) near the lower connecting end (4). A spring (11) is installed between the upper spring hole (9) and the lower spring hole (10). A sampling tube cutting device is provided between the middle of the upper clamping surface (5) and the middle of the lower clamping surface (6), and an activated carbon melt sealing head cutting device is provided between the head of the upper clamping surface (5) and the head of the lower clamping surface (6).

2. The portable solid sampling tube cutter according to claim 1 is characterized in that The sampling tube cutting device comprises a semicircular upper clamping groove I (12) located on the upper clamping surface (5), a semicircular lower clamping groove I (13) located on the lower clamping surface (6), and a cutting wheel I (14), wherein the upper clamping groove I (12) is opposite to the lower clamping groove I (13), a limiting groove (15) is provided on one side of the upper clamping groove I (12), and a cutting wheel mounting groove I (16) is provided on the inner surface of the groove on one side of the lower clamping groove I (13), the cutting wheel I (14) is installed in the cutting wheel mounting groove I (16) and connected to the side of the cutting wheel mounting groove I (16), the limiting groove (15) corresponds to the cutting wheel mounting groove I (16), and after the upper clamping surface (5) contacts the lower clamping surface (6), the upper clamping groove I (12) and the lower clamping groove I (13) form a sampling tube cutting hole.

3. The portable solid sampling tube cutter according to claim 1 is characterized in that The activated carbon melting head cutting device comprises an upper clamping groove II (17) located on the upper clamping surface (5), a lower clamping groove II (18) located on the lower clamping surface, and a cutting wheel II (20), wherein the upper clamping groove II (17) is opposite to the lower clamping groove II (18), the shape of the upper clamping groove II (17) corresponds to the external contour of the activated carbon melting head, the shape of the lower clamping groove II (18) corresponds to the external contour of the activated carbon melting head, a cutting wheel mounting groove II (19) is formed on the inner surface of the groove on one side of the lower clamping groove II (18), and the cutting wheel II (20) is installed in the cutting wheel mounting groove II (19) and connected to the side of the cutting wheel mounting groove II (19), and after the upper clamping surface (5) contacts the lower clamping surface (6), the upper clamping groove II (17) and the lower clamping groove II (18) form an activated carbon melting head cutting hole.

4. The portable solid sampling tube cutter according to claim 1 is characterized in that The upper clamping arm (1) and the lower clamping arm (2) are made of polyethylene resin.

5. The portable solid sampling tube cutter according to claim 2 is characterized in that The diameter of the limiting groove (15) is greater than the diameter of the upper clamping groove I (12), and the limiting groove (15) and the upper clamping groove I (12) are in a stepped shape.

6. The portable solid sampling tube cutter according to claim 2, characterized in that The cutting wheel I (14) is configured as a diamond glass cutting wheel.

7. The portable solid sampling tube cutter according to claim 3 is characterized by: The cutting wheel II (20) is configured as a diamond glass cutting wheel.

8. The portable solid sampling tube cutter according to claim 3, characterized in that The upper hand grip surface (7) and the lower hand grip surface (8) are both configured as arc-shaped surfaces.

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