CN216208343U

CN216208343U - Pressure type fine soil particle analyzer with multiple test points

Info

Publication number: CN216208343U
Application number: CN202122728686.4U
Authority: CN
Inventors: 施捷; 石民; 钟洪卫; 戴鹏; 陈桂梅
Original assignee: Hunan Hetian Engineering Project Management Co ltd
Current assignee: Hunan Hetian Engineering Project Management Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-05
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a pressure type fine soil particle analyzer with multiple test points, which comprises a measuring cylinder, two electronic balances and two miniature air pumps, wherein the measuring cylinder is connected with the two miniature air pumps; the measuring cylinder is internally provided with a first accommodating cavity for accommodating liquid, the side surface of the measuring cylinder is provided with two testing holes communicated with the first accommodating cavity, and the two testing holes are arranged up and down; the two electronic balances are positioned outside the measuring cylinder, and each electronic balance comprises an outer frame, a support, a tray, an outer cup and an inner cup; the outer frame is provided with an accommodating space, the bottom of the outer frame is provided with a through hole, and the support passes through the through hole and extends out of the bottom of the outer frame; by adopting two electronic balances and matching with two micro air pumps, two test points can be tested simultaneously, the test process is free from the disturbance influence of a hydrometer and the problem that a pipette cannot strictly fix the depth h to suck the sample liquid, and the pressure principle of fixing the depth and measuring the sample liquid at regular time is adopted, so that the operation is simple and convenient, and the test result is more accurate.

Description

Pressure type fine soil particle analyzer with multiple test points

Technical Field

The utility model relates to the technical field of analyzers, in particular to a pressure type multi-test-point fine soil particle analyzer.

Background

The existing fine soil particle analysis method mainly comprises the following steps: pipette method and hydrometer method. The hydrometer method is mainly designed according to the Archimedes principle and the Vaccinium uliginosum principle, and has the advantages of simple operation and low experimental cost; the disadvantages are as follows: 1. during the test, the insertion of the hydrometer can cause soil particles to generate ascending movement between the measuring cylinder wall and the bulb wall of the hydrometer (which has the law of violation of the Vaccinium uliginosum period), and the accuracy of the experiment is influenced. 2. The shoulder of the bulb body of the hydrometer can be partially adsorbed by soil particles, so that the weight of the hydrometer is increased, and the experimental precision is influenced. The hydrometer method has the defects, and is popularized, because the hydrometer method is proposed for over one hundred and seventy years, and the current testing means and technology are advanced. The pipette method is mainly designed according to the Vaccinium uliginosum theorem, sample liquid is extracted at a fixed time t and a fixed depth h according to the particle size of soil particles to be detected, and then the content of soil in the sample liquid is used for calculating a particle analysis result. The pipette method is obviously superior to the hydrometer method in terms of experimental methods, but the operation process is more complicated, and the sample liquid at the fixed depth h is not sucked in the operation process. When the pipette is inserted, water enters the sample liquid part of the pipette, and the sample liquid level of the pipette is flush with the liquid level of the measuring cylinder after the pipette is fixed in depth. Note that this portion of the sample liquid in the pipette is not taken at a constant depth h. The sample solution is not completely taken in the shadow part, but is partially supplemented at the upper part, so that the final result is small (in terms of the weight of the soil after the removed solution is dried).

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide a pressure type multi-test-point fine soil particle analyzer, which performs multi-point testing, and has the advantages of simple and fast operation and more accurate test result.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a pressure type fine soil particle analyzer with multiple test points comprises a measuring cylinder, two electronic balances and two miniature air pumps; the measuring cylinder is internally provided with a first accommodating cavity for accommodating liquid, the side surface of the measuring cylinder is provided with two testing holes communicated with the first accommodating cavity, and the two testing holes are arranged up and down; the two electronic balances are positioned outside the measuring cylinder, and each electronic balance comprises an outer frame, a support, a tray, an outer cup and an inner cup; the outer frame is provided with an accommodating space, the bottom of the outer frame is provided with a through hole, and the support passes through the through hole and extends out of the bottom of the outer frame; the tray is arranged on the support and is positioned in the accommodating space; the outer cup is provided with a second containing cavity with an upward opening for containing liquid; the inner cup is reversely buckled in the liquid in the second containing cavity and is connected with the outer frame, the inner cup and the outer cup are separated from each other, and the inner cup is provided with a third containing cavity; the output ends of the two miniature inflation pumps are connected with first air pipes and second air pipes, each first air pipe is communicated with a corresponding test hole, and each second air pipe is communicated with a corresponding third accommodating cavity.

Preferably, the upper inner diameter and the lower inner diameter of the outer cup are consistent and are both 60 +/-0.02 mm, and the height of the outer cup is 150 + 155 mm.

Preferably, the outer diameter of the inner cup is 45 +/-0.02 mm, the inner diameter is 43 +/-0.02 mm, and the height is 130 + 135 mm.

Preferably, the measuring cylinder has an inner diameter of 60mm and a wall thickness of 0.1 mm.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:

by adopting two electronic balances and matching with two micro air pumps, two test points can be tested simultaneously, the test process is free from the disturbance influence of a hydrometer and the problem that a pipette cannot strictly fix the depth h to suck the sample liquid, and the pressure principle of fixing the depth and measuring the sample liquid at regular time is adopted, so that the operation is simple and convenient, and the test result is more accurate.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

fig. 2 is an enlarged schematic view of an electronic balance according to a preferred embodiment of the present invention.

The attached drawings indicate the following:

10. measuring cylinder 11 and first accommodating cavity

12. Test hole 20, electronic balance

21. Outer frame 22, support

23. Tray 24, outer cup

25. Inner cup 201 and accommodating space

202. Through hole 203 and second accommodating cavity

204. Third accommodating cavity 30 and micro inflator pump

41. A first air pipe 42 and a second air pipe

Detailed Description

Referring to fig. 1 and 2, there is shown a specific structure of a preferred embodiment of the present invention, which includes a measuring cylinder 10, two electronic balances 20 and two micro-inflators 30.

The measuring cylinder 10 is internally provided with a first accommodating cavity 11 for accommodating liquid, the side surface of the measuring cylinder 10 is provided with two testing holes 12 communicated with the first accommodating cavity 11, and the two testing holes 12 are arranged up and down; in this embodiment, the measuring cylinder 10 has an inner diameter of 60mm and a wall thickness of 0.1 mm.

The two electronic balances 20 are positioned outside the measuring cylinder 10, and each electronic balance 20 comprises an outer frame 21, a support 22, a tray 23, an outer cup 24 and an inner cup 25; the outer frame 21 has a containing space 201, the bottom of the outer frame 21 is provided with a through hole 202, and the support 22 passes through the through hole 202 and extends out of the bottom of the outer frame 21; the tray 23 is arranged on the support 22 and is positioned in the accommodating space 201; the outer cup 24 is provided with a second containing cavity 203 with an upward opening for containing liquid; the inner cup 25 is inverted in the liquid of the second receiving chamber 203 and connected to the outer frame 21, the inner cup 25 and the outer cup 24 are separated from each other without contact, and the inner cup 25 has a third receiving chamber 204. In the present embodiment, the upper and lower inner diameters of the outer cup 24 are identical and are both 60 ± 0.02mm, and the height of the outer cup 24 is 150-; the outer diameter of the inner cup 25 is 45 +/-0.02 mm, the inner diameter is 43 +/-0.02 mm, and the height is 130-135 mm.

The output ends of the two micro air pumps 30 are connected with first air pipes 41 and second air pipes 42, each first air pipe 41 is communicated with the corresponding test hole 11, and each second air pipe 42 is communicated with the corresponding third accommodating cavity 204.

Detailed description the working principle of the present embodiment is as follows:

during operation, appropriate liquid is respectively injected into the first accommodating cavity 11 and the second accommodating cavity 203, the inner cup 25 is reversely buckled in the liquid of the second accommodating cavity 203, then the miniature inflator pump 30 is started to inflate, the water pressure in the fixed depth of the measuring cylinder 10 is balanced with the pressure in the test holes 12, the pressures in the two test holes 12 are respectively and accurately measured through the two electronic balances 20 (needing conversion), the analyzer is used for testing, and the operation is simple, convenient and rapid, and the test result is more accurate.

The design key points of the utility model are as follows: by adopting two electronic balances and matching with two micro air pumps, two test points can be tested simultaneously, the test process is free from the disturbance influence of a hydrometer and the problem that a pipette cannot strictly fix the depth h to suck the sample liquid, and the pressure principle of fixing the depth and measuring the sample liquid at regular time is adopted, so that the operation is simple and convenient, and the test result is more accurate.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a pressure formula fine grained soil particle analysis appearance of many test points which characterized in that: comprises a measuring cylinder, two electronic balances and two micro air pumps; the measuring cylinder is internally provided with a first accommodating cavity for accommodating liquid, the side surface of the measuring cylinder is provided with two testing holes communicated with the first accommodating cavity, and the two testing holes are arranged up and down; the two electronic balances are positioned outside the measuring cylinder, and each electronic balance comprises an outer frame, a support, a tray, an outer cup and an inner cup; the outer frame is provided with an accommodating space, the bottom of the outer frame is provided with a through hole, and the support passes through the through hole and extends out of the bottom of the outer frame; the tray is arranged on the support and is positioned in the accommodating space; the outer cup is provided with a second containing cavity with an upward opening for containing liquid; the inner cup is reversely buckled in the liquid in the second containing cavity and is connected with the outer frame, the inner cup and the outer cup are separated from each other, and the inner cup is provided with a third containing cavity; the output ends of the two miniature inflation pumps are connected with first air pipes and second air pipes, each first air pipe is communicated with a corresponding test hole, and each second air pipe is communicated with a corresponding third accommodating cavity.

2. The pressure multi-test point fine soil particle analyzer of claim 1 wherein: the upper inner diameter and the lower inner diameter of the outer cup are consistent and are both 60 +/-0.02 mm, and the height of the outer cup is 150 plus or minus 155 mm.

3. The pressure multi-test point fine soil particle analyzer of claim 2, wherein: the outer diameter of the inner cup is 45 +/-0.02 mm, the inner diameter is 43 +/-0.02 mm, and the height is 130-135 mm.

4. The pressure multi-test point fine soil particle analyzer of claim 1 wherein: the inner diameter of the measuring cylinder is 60mm, and the wall thickness is 0.1 mm.