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A kind of intelligent leaching, vacuum saturation soaking combined device and method

A combined device and leaching technology, which is applied in the fields of geotechnical engineering, environmental science and engineering, can solve the problems of low degree of automation, large cylinder volume, and single function, so as to improve the degree of automation, reduce the amount of solution, and have multiple functions. Effect

Active Publication Date: 2022-07-29
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vacuum saturated immersion and leaching are common test methods for rapidly saturating samples, but the vacuum saturated soaking tanks and leaching equipment that are widely used at present have great limitations. The disadvantages of vacuum saturated soaking tanks include: (1) cylinder The body is mostly made of metal, which is difficult to simulate the erosion state of the soil in an acid-base environment; (2) single device, it is difficult to realize soil samples soaking in multiple solutions (multiple concentrations, multiple types) at the same time; (3) cylinder body The volume is large, it is not convenient to soak a small amount of soil, and the consumption of a large amount of solution
(4) Single function, only applicable to vacuum saturation immersion test
The disadvantages of the leaching device include: (1) The degree of automation is low, and it is difficult to realize the intelligent circulation of the solution; (2) The leaching rate, leaching time, solution throughput and total solution volume cannot be intelligently controlled; (3) It is difficult to observe the leaching process Change law of soil sample structure during or after the process

Method used

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  • A kind of intelligent leaching, vacuum saturation soaking combined device and method
  • A kind of intelligent leaching, vacuum saturation soaking combined device and method
  • A kind of intelligent leaching, vacuum saturation soaking combined device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] like figure 1 As shown, an intelligent leaching and vacuum saturation soaking combined device includes a plexiglass vacuum bracket cylinder 2, a plexiglass reactor and a plexiglass liquid storage tank 7.

[0048] The plexiglass vacuum bracket cylinder 2 includes a cylinder body 2c, a sealing cover on the cylinder body 2c is provided with a cylinder head 2b, and a vacuum gauge 2e, a vacuum valve 2a and a plurality of spray valves 2f are arranged on the cylinder head 2b. The vacuum tube 11 is connected with the vacuum pump 4, the spray valve 2f is connected with the liquid outlet of the constant flow pump 1, the liquid inlet of the constant flow pump 1 is connected with one end of the spray tube 22, and the other end of the spray tube 22 extends to the plexiglass liquid storage In the general tank 7, an intelligent switch 9 is arranged on the spray pipe 22, and a plexiglass reactor is arranged in the cylinder body 2c below the spray valve 2f, and the bottom of the plexigl...

Embodiment 2

[0069] A kind of intelligent leaching, vacuum saturated soaking combination device described in embodiment 1, when used for the multi-connected vacuum saturated soaking test, comprises the following steps:

[0070] Step 1. Select the pressing method or the cutting method according to the state of the sample 13. Process the sample 13 as described in Example 1, and place the processed sample 13 in the plexiglass saturator 21, and then place the plexiglass saturator 21 Put into the sample reaction chamber 5a, and cover the cylinder head 2b;

[0071] Step 2. Close the five spray valves 2f and the corresponding liquid separation switch 5d, open the vacuum valve 2a, turn on the vacuum pump 4 at the same time, and pump out the gas in the cylinder 2c and the sample 13. When the vacuum gauge 2e is close to -100kPa, continue to pump. Air, the clay sample is pumped for about 1h, and the silty soil sample is pumped for about 0.5h;

[0072] Step 3. Set the flow rate of the constant curren...

Embodiment 3

[0081] The intelligent leaching and vacuum saturation soaking combined device described in Embodiment 1 includes the following steps when used for the multi-connected vacuum saturation soaking test of various solutions:

[0082] Using the description of the examples, in Example 2, the first liquid storage tank 7a, the second liquid storage tank 7b, the third liquid storage tank 7c, the fourth liquid storage tank 7d, and the fifth liquid storage tank 7e were filled with different solutions , and then perform step 1, step 2, step 3, step 4, step 5, step 6, step 7 and step 8 in sequence to obtain the sample 13 after being soaked in different solutions under vacuum.

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Abstract

The invention discloses an intelligent leaching and vacuum saturation soaking combined device, comprising a plexiglass reactor, a plexiglass vacuum bracket cylinder and a liquid storage tank. Five plexiglass reactors can be placed in the plexiglass vacuum bracket cylinder, which are connected to There is a rubber stopper at the plexiglass reactor. The plexiglass reactor consists of three parts. The upper part is the sample reaction chamber, and the sample is set in the chamber. The top and bottom layers of the sample are respectively provided with a graphite hole upper electrode plate and a graphite hole lower electrode plate. The lower part of the glass plate with small holes is a separatory funnel, and the filter tip is provided with a separatory switch. The long neck of the separatory funnel passes through the plexiglass vacuum carrier cylinder and hangs above the reservoir. The invention has the advantages that the cylinder body is made of plexiglass material, which can simulate the erosion state of soil in an acid-alkali environment; it can be switched between single-connection and multi-connection operations, reducing the amount of solution, and is more suitable for soaking a small amount of soil. Intelligent operation, you can remotely control the soaking time and liquid inlet and outlet through the mobile app.

Description

technical field [0001] The invention relates to the fields of geotechnical engineering, environmental science and engineering, in particular to an intelligent leaching and vacuum saturated immersion combined device, a multi-stage vacuum saturated immersion test method, and a multi-stage circulating leaching test method, which is applicable but not suitable for It is limited to the immersion or leaching (or leaching) test of various types of solutions (including strong acid and strong alkali solutions) on various samples (such as rocks, soil, concrete, powder materials, etc.) under vacuum or atmospheric pressure. Background technique [0002] Because the natural geotechnical environment is very complex, it is necessary to simulate the soil erosion degree under natural conditions as a research method to study soil properties and improve soil engineering properties. Vacuum saturated immersion and leaching are both common test methods for rapidly saturating samples, while the va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/26B01J19/02G01N17/00
CPCB01J19/26B01J19/02G01N17/00
Inventor 柏巍张文博孔令伟简涛罗晓倩岳秀
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI