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Sampling unit, combined sampling head and sampling device for liquid chemical product

A technology for sampling units and chemical products, applied in the field of combined sampling devices, can solve the problems of inconvenient portability and storage, large workload, limited depth, etc., to avoid mutual cross-contamination, convenient combination and disassembly, and good practicability Effect

Active Publication Date: 2020-07-10
李航 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this device still has some deficiencies, at first, this device can only collect the sample of certain selected depth each time, when needing to collect other depth samples, need to carry out next collection after last sample is removed, and, in order to prevent the sample The cross-contamination between the samples needs to be cleaned thoroughly before collection, resulting in very complicated sampling work and a huge workload
Secondly, the device is limited by its structure, and the depth it can reach is very limited. If you want to collect samples with a greater depth, you need to lengthen the length of the fixed cylinder, which eventually leads to a very large volume of the entire device, which is inconvenient to carry and store.

Method used

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  • Sampling unit, combined sampling head and sampling device for liquid chemical product
  • Sampling unit, combined sampling head and sampling device for liquid chemical product
  • Sampling unit, combined sampling head and sampling device for liquid chemical product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 , 2 , 3, 5, 6, 10 and 11 show: a sampling unit for liquid chemical products, including a liquid storage tank 1, an upper rotary cover assembly 2, a lower rotary cover assembly 3 and an air suction inner tube 4. Among them, the function of the liquid storage bin 1 is to store the collected liquid chemical products, the function of the upper rotating cover assembly 2 is to control the opening / closing of the channel through which the sample enters the liquid storage bin 1, and the function of the lower rotating cover assembly 3 is to control the discharge of the sample from the storage tank. On / off of the channel of tank 1.

[0048] The upper end surface of the liquid storage bin 1 is provided with two liquid inlet holes 1-1 around its center, and the lower end surface of the liquid storage bin 1 is provided with a liquid discharge hole 1-2. Specifically, the liquid storage bin 1 has a cylindrical structure, and the angle between the centers of the two l...

Embodiment 2

[0058] Such as Figure 4 , 12 Shown in and 13: a combined sampling head for liquid chemical products, including a plurality of sampling units described in embodiment 1 connected in series, the suction inner tubes 4 of two adjacent sampling units are butted together, and are located at The lower end of the suction inner tube 4 of the sampling unit at the tail end is closed and arranged, and the suction inner tubes 4 of a plurality of sampling units form a connected suction channel, the lower outer tube 3-1 of the sampling unit and the upper outer tube 2-1 of the sampling unit below it. 1 are connected together, and the upper outer tube 2-1 and the lower outer tube 3-1 of multiple sampling units rotate synchronously.

[0059] The lower outer tube 3-1 of the upper sampling unit and the upper outer tube 2-1 of the lower sampling unit in two adjacent sampling units are screwed together.

[0060] The inner diameter of the lower end of the suction inner tube 4 of the sampling unit ...

Embodiment 3

[0064] Such as Figure 14 and 15 Shown: a combined sampling head for liquid chemical products, its overall structure is the same as that of Embodiment 2, the difference is that: the suction inner tubes 4 of two adjacent sampling units are also screwed on the Together, when the two sampling units are assembled together, the suction inner tube 4 and the screw connection of the upper outer tube 2-1 and the lower outer tube 3-1 are realized simultaneously through the screwing operation.

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Abstract

The invention relates to a sampling unit, a sampling head and a combined sampling device for a liquid chemical product. The sampling unit comprises a liquid storage bin, an upper rotary cover assembly, a lower rotary cover assembly and an air exhaust inner pipe; the combined sampling head comprises a plurality of sampling units which are connected in series, the air exhaust inner pipes of every two adjacent sampling units are in butt joint, the lower end of the air exhaust inner pipe of the sampling unit located at the tail end is closed, the sampling device comprises a combined sampling headand a driving adjusting mechanism, and the driving adjusting mechanism comprises a negative pressure air source, an air exhaust main pipe, an adjusting pipe and a supporting pipe. Liquid chemical product samples of different depths can be collected at the same time, dismounting and mounting can be conducted, and carrying and storage are very convenient.

Description

technical field [0001] The invention relates to the technical field of liquid sampling devices, in particular to a sampling unit, a sampling head and a combined sampling device for liquid chemical products. Background technique [0002] The chemical industry is an important pillar industry in my country, and the chemical industry park is the gathering area for the development of the chemical industry, which has made important contributions to the economic and social development of our country. In the chemical industry, it is often necessary to sample liquid products, and then conduct sampling research on liquid chemical products. There are many existing liquid chemical product sampling tools, most of which are directly sampled from the liquid product storage barrel through a simple negative pressure suction principle. Due to the diversity and instability of liquid chemical products, for some unstable liquid chemical products, it is necessary to collect product samples at di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10G01N1/14
CPCG01N1/10G01N1/14G01N2001/1031G01N2001/1418
Inventor 李航赵国坡杨淑娟孙守锋陈彩凤
Owner 李航