Vacuum pumping device and method for geotechnical test

A technology of vacuum pumping device and geotechnical test, which is applied in the preparation of test samples, etc., can solve the problem of soil samples or sediments easily overflowing the sample container, and achieve the effect of automatic liquid-gas separation

Pending Publication Date: 2022-07-12
GUANGDONG LAB OF SOUTHERN OCEAN SCI & ENG GUANGZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, one of the purposes of the present invention is to provide a vacuum pumping device for geotechnical tests, which can solve the problem that soil samples or sediments easily overflow the sample container during the pumping process
[0005] The second object of the present invention is to provide a vacuum pumping method for geotechnical tests, which can solve the problem that soil samples or deposits easily overflow the sample container during the pumping process

Method used

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  • Vacuum pumping device and method for geotechnical test
  • Vacuum pumping device and method for geotechnical test
  • Vacuum pumping device and method for geotechnical test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like Figure 1-4 As shown, a vacuum pumping device for a geotechnical test includes a vacuum box 1 with a vacuum chamber 11 inside, a vacuum pump 2, an exhaust channel 3, an exhaust channel 4, a vacuum valve 5 and a controller, the vacuum box One side of the body 1 is provided with an opening communicating with the vacuum chamber 11 , the opening is covered with a closed door body, and one end of the exhaust passage 3 and one end of the exhaust passage 4 are connected to the vacuum chamber 11 through the vacuum valve 5 , the other end of the suction channel 3 is connected to the vacuum pump 2, the vacuum chamber 11 is provided with a number of detection parts 12 along the height direction, and the detection part is provided with a number of detection units 13, the vacuum pump 2, the detection unit 13 The vacuum valve 5 is connected to the controller; the vacuum valve 5 is used to drive one of the suction channel 3 and the exhaust channel 4 to communicate with the vacuum...

Embodiment 2

[0039] like Figure 1-4 As shown, a vacuum pumping device for a geotechnical test includes a vacuum box 1 with a vacuum chamber 11 inside, a vacuum pump 2, an exhaust channel 3, an exhaust channel 4, a vacuum valve 5 and a controller, the vacuum box One side of the body 1 is provided with an opening communicating with the vacuum chamber 11 , the opening is covered with a closed door body, and one end of the exhaust passage 3 and one end of the exhaust passage 4 are connected to the vacuum chamber 11 through the vacuum valve 5 , the other end of the suction channel 3 is connected to the vacuum pump 2, the vacuum chamber 11 is provided with a number of detection parts 12 along the height direction, and the detection part is provided with a number of detection units 13, the vacuum pump 2, the detection unit 13 The vacuum valve 5 is connected to the controller; the vacuum valve 5 is used to drive one of the suction channel 3 and the exhaust channel 4 to communicate with the vacuum...

Embodiment 3

[0042] like Figure 1-4 As shown, a vacuum pumping method of a geotechnical test, applied to the controller of the vacuum pumping device of the geotechnical test as described in Embodiment 1 or 2, comprises the following steps:

[0043] S1: place the sample container containing the sample in the detection part 12, drive the detection unit 13 to extend into the sample container, and close the closed door;

[0044] Specifically, the bottom plate 123 is moved out of the vacuum chamber 11 through the horizontal guide rail 124, so that the tester can place the sample container containing the sample on the bottom plate 123. Preferably, the bottom plate 123 is provided with a positioning groove 125 for fixing the sample container. position and posture, then the horizontal guide rail 124 resets the bottom plate 123, and then the vertical guide rail 122 drives the layer plate 121 to descend, so that the detection end of the detection unit 13 extends into the sample container, preferabl...

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Abstract

The invention discloses a vacuum pumping device and method for a soil test, the device specifically comprises a vacuum box body internally provided with a vacuum cavity, a vacuum pump, a pumping channel, an exhaust channel, a vacuum valve and a controller, one side of the vacuum box body is provided with an opening communicated with the vacuum cavity, and the opening is covered with a closed door body; one end of the air exhaust channel and one end of the air exhaust channel are connected with the vacuum cavity through vacuum valves, the other end of the air exhaust channel is connected with a vacuum pump, a plurality of detection parts are arranged in the vacuum cavity in the height direction, a plurality of detection units are arranged in the detection parts, and the vacuum pump, the detection units and the vacuum valves are connected with a controller. According to the invention, the detection unit detects the position of the sample in the sample container to feed back and control the operation of the vacuum pump, so that the test accuracy is improved, and the working intensity of testers is reduced.

Description

technical field [0001] The invention relates to the technical field of geotechnical test equipment, in particular to a vacuum pumping device and method for geotechnical tests. Background technique [0002] In the geotechnical test and sediment specific gravity test, the specification stipulates that the soil or sediment with a particle size of less than 5 mm is tested by the pycnometer method. When the soil particles or sediments contain soluble salts, hydrophilic colloids or organic matter When measuring the specific gravity of soil particles or sediments, use a neutral liquid, and use a vacuum pumping method to remove the air in the soil or sediments. When pumping, the vacuum degree should be close to an atmospheric negative pressure value (-98KPa), and the pumping time can be 1-2 hours until no bubbles overflow in the suspension. During the pumping process, the suspension cannot overflow outside the bottle. [0003] In fact, in the process of pumping soil samples or sedi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 商和辉黄雪华蒋雪筱邓义楠王金莲何树平曹凯君朱坤杰
Owner GUANGDONG LAB OF SOUTHERN OCEAN SCI & ENG GUANGZHOU
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