Safe low-liquid-level sampling device

Abstract

The utility model discloses a safety type low liquid level sampling device which comprises a hollow stirring shaft, a plurality of first sampling pipes arranged at the bottom of the stirring shaft and communicated with the stirring shaft, and a sampling assembly arranged at the upper part of the stirring shaft and communicated with the stirring shaft, and the sampling assembly comprises an electric sampler, a second sampling pipe, a sampling bottle and a third sampling pipe, the electric sampler is communicated with one end of the second sampling tube, the other end of the second sampling tube is arranged in the sampling bottle, one end of the third sampling tube is arranged in the sampling bottle, the other end of the third sampling tube is detachably connected with the stirring shaft, and the electric sampler is used for sucking air in the sampling bottle. According to the low-liquid-level sampling device, air in the sampling bottle is extracted through the electric sampler to enable the sampling bottle to be in a negative pressure state, so that liquid at the bottom of the reaction kettle is sampled through the third sampling pipe, the hollow stirring shaft and the first sampling pipe, and the problem that sampling is difficult under the low-liquid-level working condition is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a safe low-liquid-level sampling device. Background Art

[0002] In the field of chemical engineering and technology, reactors are common equipment used to conduct various chemical reactions. During or after a reaction, samples of the materials within the reactor must be taken for testing to ensure that the reaction and production meet standards. Therefore, a sampling device is required to quickly monitor the reaction status of the materials within.

[0003] Currently, most chemical plants still rely on the most primitive sampling methods: using a sampling bottle to drop into the kettle to remove the liquid sample, or directly opening the kettle lid to take a sample. Some also use a pneumatic pump and a sampling tube inserted into the kettle. However, these sampling methods are difficult to perform under low liquid level conditions due to the influence of the agitator blades. They also pose significant safety risks, such as air intrusion into the kettle, causing an explosion, or toxic gases escaping into the workspace during sampling, causing casualties among the samplers. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a safe low liquid level sampling device to solve one or more of the above-mentioned problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides a safe low liquid level sampling device, comprising a hollow stirring shaft, a plurality of first sampling tubes arranged at the bottom of the stirring shaft and connected to the stirring shaft, and a sampling assembly arranged at the upper part of the stirring shaft and connected to the stirring shaft, the sampling assembly comprising an electric sampler, a second sampling tube, a sampling bottle and a third sampling tube, the electric sampler being connected to one end of the second sampling tube, the other end of the second sampling tube being arranged in the sampling bottle, one end of the third sampling tube being arranged in the sampling bottle, the other end of the third sampling tube being detachably connected to the stirring shaft, and the electric sampler being used to suck the air in the sampling bottle.

[0006] In some embodiments, the electric sampler includes a cylinder, a telescopic mechanism disposed in the cylinder, and a piston disposed at an end of the telescopic mechanism, and the cylinder is communicated with the second sampling tube.

[0007] In some embodiments, the telescopic mechanism includes a motor, a screw provided at an output end of the motor, and a slider provided on the screw, wherein the slider is connected to the piston via a connecting rod, and the slider can move along the screw.

[0008] In some embodiments, the number of the first sampling tubes is 4.

[0009] In some embodiments, the first sampling tube is arranged in an inclined shape, and the angle between the first sampling tube and the stirring shaft is 135-180°.

[0010] In some embodiments, the sampling bottle includes a bottle cap and a bottle body detachably connected to the bottle cap, and the second sampling tube and the third sampling tube pass through the bottle cap and have their ends located in the bottle body.

[0011] In some embodiments, the electric sampler is detachably connected to the bottle cap.

[0012] In some embodiments, a sampling hole is provided on the upper portion of the stirring shaft, and the third sampling tube is inserted into the sampling hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model discloses a safe low liquid level sampling device, which extracts the air in the sampling bottle through an electric sampler to put it in a negative pressure state, thereby sampling the liquid at the bottom of the reactor through the third sampling tube, the hollow stirring shaft and the first sampling tube, solving the problem of difficulty in sampling under low liquid level conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a safe low-liquid-level sampling device in one embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of a safe low-liquid-level sampling device in one embodiment of the present invention;

[0017] Figure 3 This is a structural schematic diagram of a safe low liquid level sampling device in one embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figures 1 to 3 Shown:

[0021] A safe low-liquid-level sampling device includes a hollow stirring shaft 10, a plurality of first sampling tubes 20 disposed at the bottom of the stirring shaft 10 and connected to the stirring shaft 10, and a sampling assembly disposed at the top of the stirring shaft 10 and connected to the stirring shaft 10. The number of the first sampling tubes 20 is four, and the first sampling tubes 20 are disposed in an inclined shape.

[0022] The angle between the first sampling tube 20 and the stirring shaft 10 is 135 degrees. The sampling assembly includes an electric sampler 30,

[0023] A second sampling tube 40, a sampling bottle 50 and a third sampling tube 60, the electric sampler 30 is connected to one end of the second sampling tube 40, the other end of the second sampling tube 40 is arranged in the sampling bottle 50, and one end of the third sampling tube 60 is arranged in the sampling bottle 50. A sampling hole is provided on the upper part of the stirring shaft 10, and the third sampling tube 60 is inserted into the sampling hole. The electric sampler 30 includes a cylinder body 31, a telescopic mechanism arranged in the cylinder body 31 and a piston 32 arranged at the end of the telescopic mechanism. The telescopic mechanism includes a motor 33, a screw 34 arranged at the output end of the motor 33, and a slider 35 arranged on the screw 34. The slider 35 is connected to the piston 32 by a connecting rod 36. The end of the cylinder body 31 is connected to the second sampling tube 40, and the slider 35 can move along the screw 34.

[0024] The sampling bottle 50 includes a bottle cap 51 and a bottle body 52 detachably connected to the bottle cap 51. The second sampling tube 40 and the third sampling tube 60 pass through the bottle cap 51 and their ends are located in the bottle body 52. ​​The electric sampler 30 is connected to the bottle cap 51 by a snap or thread.

[0025] A safe low-liquid-level sampling device according to an embodiment of the present invention extracts air from a sampling bottle through an electric sampler, placing it in a negative pressure state, thereby sampling the liquid at the bottom of the reactor through a third sampling tube, a hollow stirring shaft, and a first sampling tube, thereby solving the problem of difficulty in sampling under low-liquid-level working conditions.

[0026] Finally, it should be noted that those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements shall fall within the scope of the present invention as claimed. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe low liquid level sampling device, characterized in that: The invention comprises a hollow stirring shaft (10), a plurality of first sampling tubes (20) arranged at the bottom of the stirring shaft (10) and connected to the stirring shaft (10), and a sampling assembly arranged at the upper part of the stirring shaft (10) and connected to the stirring shaft (10), wherein the sampling assembly comprises an electric sampler (30), a second sampling tube (40), a sampling bottle (50) and a third sampling tube (60), wherein the electric sampler (30) is connected to one end of the second sampling tube (40), the other end of the second sampling tube (40) is arranged in the sampling bottle (50), one end of the third sampling tube (60) is arranged in the sampling bottle (50), and the other end of the third sampling tube (60) is detachably connected to the stirring shaft (10), and the electric sampler (30) is used to suck the air in the sampling bottle (50).

2. A low liquid level sampling device according to claim 1, characterized in that: The electric sampler (30) comprises a cylinder (31), a telescopic mechanism arranged in the cylinder (31), and a piston (32) arranged at the end of the telescopic mechanism. The cylinder (31) is communicated with the second sampling tube (40).

3. A low liquid level sampling device according to claim 2, characterized in that: The telescopic mechanism comprises a motor (33), a screw (34) arranged at the output end of the motor (33), and a slider (35) arranged on the screw (34); the slider (35) is connected to the piston (32) via a connecting rod (36); and the slider (35) can move along the screw (34).

4. A low liquid level sampling device according to claim 1, characterized in that: The number of the first sampling tubes (20) is 4.

5. A low liquid level sampling device according to claim 1, characterized in that: The first sampling tube (20) is arranged in an inclined shape, and the angle between the first sampling tube (20) and the stirring shaft (10) is 135-180°.

6. A low liquid level sampling device according to claim 1, characterized in that: The sampling bottle (50) comprises a bottle cap (51) and a bottle body (52) detachably connected to the bottle cap (51); the second sampling tube (40) and the third sampling tube (60) pass through the bottle cap (51) and their ends are located in the bottle body (52).

7. A low liquid level sampling device according to claim 6, characterized in that: The electric sampler (30) is detachably connected to the bottle cap (51).

8. A low liquid level sampling device according to claim 1, characterized in that: A sampling hole is provided on the upper portion of the stirring shaft (10), and the third sampling tube (60) is inserted into the sampling hole.

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