Geotechnical cloth water permeability tester

Abstract

A geotechnical cloth water permeability tester comprises a rack, a control assembly, a driving assembly and a testing assembly are arranged on the rack, the testing assembly comprises a bottom plate, a testing bin, a water outlet bin and a weighing bin, the testing bin, the water outlet bin and the weighing bin are arranged on the bottom plate, a mounting pipe is arranged in the testing bin, and a floating platform linked with the driving assembly is arranged in the mounting pipe. A weighing bin is arranged in the machine frame, a testing bin is arranged in the machine frame, a testing table is further arranged in the testing bin, a clamping disc is arranged on the testing table, a water outlet communicated with the clamping disc and a water outlet cavity communicated with the weighing bin are formed in the testing table, and a weighing box communicated with the weighing bin is arranged in the machine frame. When a sample is not loaded, the test bin is filled with water, then the sample is loaded, the water head difference rises through the floating platform and forms a height difference with water seeping from the sample in the test table and entering the water outlet cavity, and when water enters the test bin, redundant water overflows from the floating platform in the mounting pipe, so that the water head difference between the upper water level and the lower water level reaches a specified height.

Description

Technical Field

[0001] The utility model relates to a geotextile water permeability measuring instrument, belonging to the field of testing devices. Background Technique

[0002] The geotextile water permeability measuring instrument is used to test the flow rate index and other permeability characteristics of water flowing vertically through a single-layer geotextile without normal load and related products under a constant water head.

[0003] The permeability coefficient of the geotextile is an important performance parameter, which represents the ability of the geotextile to allow water to pass through. According to different types and application scenarios, the permeability coefficient of the geotextile can have different ranges.

[0004] The existing geotextile water permeability measuring instruments generally send water to the sample through a drip pipe to test the water permeability. However, the water permeability tested in this way has the problems of uneven pressure and impact force, and the water permeability test of the geotextile is not accurate, resulting in certain errors. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a geotextile water permeability measuring instrument.

[0006] A geotextile water permeability measuring instrument includes a frame, on which a control component, a driving component and a testing component are arranged. The testing component includes a bottom plate, a testing chamber, a water outlet chamber and a weighing chamber arranged on the bottom plate. An installation pipe is arranged in the testing chamber, and a floating platform linked with the driving component is arranged in the installation pipe. A testing table is also arranged in the testing chamber. A clamping disc is arranged on the testing table. A water outlet connected to the clamping disc and a water outlet cavity connected to the weighing chamber are arranged in the testing table. A weighing box connected to the weighing chamber is arranged in the frame. By setting the testing chamber, the traditional drip pipe is cancelled. When testing, the testing chamber is filled with water in the state of not yet loading the sample, and then the sample is loaded. The water head difference rises through the floating platform, forming a height difference with the water seeping out of the sample in the testing table and entering the water outlet cavity. When the testing chamber is filled with water, the excess water will overflow from the floating platform in the installation pipe, so that the water head difference between the upper water level and the lower water level reaches the specified height. In the state of constant water head, the testing mode is started, and the water permeating through the sample is introduced into the built-in weighing box, and the data result is obtained from the amount of water collected per unit time. There will be no problem of uneven pressure and impact force, and more accurate experimental results can be obtained.

[0007] Furthermore, a first water outlet pipe is provided at the bottom of the weighing bin. The first water outlet pipe is provided with a first water outlet communicating with the weighing box and a second water outlet communicating with the outside. An electromagnetic valve is provided on the first water outlet pipe. The electromagnetic valve is used to control the switching of the water flow to flow out from the first water outlet or the second water outlet. Controlling the electromagnetic valve can control the seepage of the sample water into the weighing box for testing, or end the test and let the water flow out through the second water outlet for drainage to facilitate the next test.

[0008] Preferably, a knob for controlling the electromagnetic valve is provided on the frame. Personnel can control the opening or closing of the electromagnetic valve through the knob, and the usage method is quick and simple.

[0009] Furthermore, a weight sensor electrically connected to the control component is provided at the bottom of the weighing box. The weight sensor can measure the weight of the water volume in the weighing bin. By calculating the water volume collected per unit time, the data result can be obtained. The test method is convenient and fast, improving the test accuracy.

[0010] Furthermore, a connection port is connected between the water outlet cavity and the water outlet bin. The connection port is used for the seepage of the sample water into the water outlet bin.

[0011] Furthermore, the clamping disc includes an upper clamping disc and a lower clamping disc bolted to the upper clamping disc. The sample is fixed between the upper clamping disc and the lower clamping disc. The sample is installed in the lower clamping disc, and the upper clamping disc is installed between the upper and lower clamping discs through bolt connection or direct pressing with a tight fit.

[0012] Preferably, the driving component includes a motor provided in the frame. The motor is connected to the floating platform through a worm and worm gear structure. The bottom of the installation pipe is communicated with a water inlet pipe. Starting the motor controls the rising or falling of the worm and worm gear structure, thereby controlling the rising and falling of the floating platform, and further controlling the water head difference to ensure the stability of the test result.

[0013] Furthermore, a baffle is provided between the water outlet bin and the weighing bin. The seepage of the sample water into the water outlet bin, and then overflows through the baffle into the weighing bin for testing.

[0014] Preferably, a second water outlet pipe is connected to the bottoms of the test bin and the water outlet bin. When the test is over, the water flow is discharged through the first water outlet pipe and the second water outlet pipe to facilitate the next test.

[0015] Preferably, the control component includes a display screen and control buttons provided on the frame. The display screen and control buttons can control the opening and closing of the equipment, and at the same time, specific test data can be displayed on the display screen, facilitating personnel to observe and monitor the test process.

[0016] The beneficial effects of the present utility model are as follows: By providing a test chamber and canceling the traditional drip water pipe, when testing is required, the test chamber is filled with water in the state before loading the sample, and then the sample is loaded. The water head difference causes the floating platform to rise, forming a height difference with the water that seeps out of the sample in the test bench and enters the water outlet chamber. When the test chamber is filled with water, the excess water will overflow from the floating platform in the installation pipe, achieving that the water head difference between the upper water level and the lower water level reaches the specified height. In the constant water head state, the test mode is started, and the water that penetrates through the sample is introduced into the built-in weighing box. The amount of water collected within a unit time is used to obtain the data result, without generating problems of uneven pressure and impact force, and more accurate experimental results can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present utility model.

[0018] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the present utility model with some parts removed;

[0020] Figure 3 It is a schematic diagram of the structure of the present utility model from another perspective;

[0021] In the figure, 1. frame; 11. weighing box; 12. knob; 13. weight sensor; 2. control component; 21. display screen; 22. control button; 3. drive component; 31. motor; 32. worm and worm gear structure; 4. test component; 41. bottom plate; 42. test chamber; 421. installation pipe; 422. water inlet pipe; 423. floating platform; 43. test bench; 431. upper clamping disc; 432. lower clamping disc; 433. water outlet; 434. water outlet chamber; 44. water outlet bin; 441. connection port; 442. baffle; 443. second water outlet pipe; 45. weighing bin; 451. first water outlet pipe; 452. first water outlet; 453. second water outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings.

[0023] It should be noted that all the expressions using "first" and "second" in the embodiments of the present utility model are used to distinguish two entities or parameters with the same name but different, so it can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be elaborated one by one in the subsequent embodiments.

[0024] The directional and positional terms mentioned in the present utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "side", etc., are only with reference to the directions or positions in the attached drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding the present utility model, rather than a limitation on the protection scope of the present utility model.

[0025] As Figures 1-3 shown, it is an embodiment of a geotextile water permeability tester of the present utility model, including a frame 1, on which a control component 2, a driving component 3 and a testing component 4 are provided. The testing component 4 includes a bottom plate 41, a testing chamber 42, a water outlet chamber 44 and a weighing chamber 45 arranged on the bottom plate 41. An installation pipe 421 is provided in the testing chamber 42, and a floating platform 423 linked with the driving component 3 is arranged in the installation pipe 421. A testing table 43 is also provided in the testing chamber 42. A clamping disc is arranged on the testing table 43. A water outlet 433 communicating with the clamping disc and a water outlet cavity 434 communicating with the weighing chamber 45 are arranged in the testing table 43. A weighing box 11 communicating with the weighing chamber 45 is arranged in the frame 1. By providing the testing chamber 42, the traditional drip water pipe is cancelled. When testing is required, the testing chamber 42 is filled with water in the state before sampling, and then the sample is installed. The water head difference rises through the floating platform 423, forming a height difference with the water seeping out from the sample in the testing table 43 and entering the water outlet cavity 434. When the testing chamber 42 is filled with water, the excess water will overflow from the floating platform 423 in the installation pipe 421, so that the water head difference between the upper water level and the lower water level reaches the specified height. In the constant head state, the testing mode is started, and the water permeating through the sample is introduced into the built-in weighing box 11. The amount of water collected per unit time is used to obtain the data result, and problems of uneven pressure and impact force will not occur, and more accurate experimental results can be obtained.

[0026] A first water outlet pipe 451 is provided at the bottom of the weighing chamber 45. The first water outlet pipe 451 is provided with a first water outlet 452433 communicating with the weighing box 11 and a second water outlet 453433 communicating with the outside. A solenoid valve is provided on the first water outlet pipe 451. The solenoid valve is used to control the switching of the water flow to flow out from the first water outlet 452433 or the second water outlet 453433. Controlling the solenoid valve can control the water seeping from the sample to enter the weighing box 11 for testing, or end the test and flow out through the second water outlet 453433 for drainage to facilitate the next test.

[0027] On the frame 1, there is a knob 12 for controlling the solenoid valve. Personnel can control the opening or closing of the solenoid valve through the knob 12, and the usage method is quick and simple.

[0028] At the bottom of the weighing box 11, there is a weight sensor 13 electrically connected to the control component 2. The weight sensor 13 can measure the water weight in the weighing bin 45. By calculating the water volume collected per unit time, the data result can be obtained. The testing method is convenient and fast, improving the testing accuracy.

[0029] There is a connection port 441 between the water outlet cavity 434 and the water outlet bin 44. The connection port 441 is used for the seepage water of the specimen to enter the water outlet bin 44.

[0030] The clamping disc includes an upper clamping disc 431 and a lower clamping disc 432 bolted to the upper clamping disc 431. The specimen is fixed between the upper clamping disc 431 and the lower clamping disc 432. The specimen is installed in the lower clamping disc 432, and the upper clamping disc 431 is installed between the upper and lower clamping discs 432 through bolt connection or direct pressing with a tight fit.

[0031] The driving component 3 includes a motor 31 arranged inside the frame 1. The motor 31 is connected to the floating platform 423 through a worm and worm gear structure 32. The bottom of the installation pipe 421 is communicated with a water inlet pipe 422. When the motor 31 starts, it controls the rise or fall of the worm and worm gear structure 32, thereby controlling the rise and fall of the floating platform 423, and further controlling the water head difference to ensure the stability of the test result.

[0032] There is a baffle 442 between the water outlet bin 44 and the weighing bin 45. The seepage water of the specimen enters the water outlet bin 44 and then overflows through the baffle 442 into the weighing bin 45 for testing.

[0033] The test chamber 42 and the bottom of the water outlet bin 44 are connected with a second water outlet pipe 443. When the test is over, the water flow is discharged through the first water outlet pipe 451 and the second water outlet pipe 443, which is convenient for the next test.

[0034] The control component 2 includes a display screen 21 and control buttons 22 arranged on the frame 1. The display screen 21 and the control buttons 22 can control the opening and closing of the device. At the same time, specific test data can be displayed on the display screen 21, which is convenient for personnel to observe and monitor the test process.

[0035] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention aims to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A geotextile water permeability tester, characterized in that: It comprises a frame, on which a control component, a driving component and a testing component are arranged, the testing component comprises a bottom plate, a testing chamber arranged on the bottom plate, a water outlet chamber and a weighing chamber, a mounting pipe is arranged in the testing chamber, a floating platform linked to the driving component is arranged in the mounting pipe, a testing bench is also arranged in the testing chamber, a clamping disc is arranged on the testing bench, a water outlet connected to the clamping disc and a water outlet cavity connected to the weighing chamber are arranged in the testing bench, and a weighing box connected to the weighing chamber is arranged in the frame.

2. The geotextile water permeability tester according to claim 1, characterized in that: A first water outlet pipe is provided at the bottom of the weighing bin. The first water outlet pipe has a first water outlet connected to the weighing box and a second water outlet connected to the outside. A solenoid valve is provided on the first water outlet pipe. The solenoid valve is used to control the switching of water flow to discharge from the first water outlet or the second water outlet.

3. The geotextile water permeability tester according to claim 2, characterized in that: The frame is provided with a knob for controlling the electromagnetic valve.

4. The geotextile water permeability tester according to claim 1, characterized in that: A weight sensor electrically connected to the control component is provided at the bottom of the weighing box.

5. The geotextile water permeability tester according to claim 1, characterized in that: A connecting port is connected between the water outlet cavity and the water outlet bin.

6. The geotextile water permeability tester according to claim 1, characterized in that: The clamping plate comprises an upper clamping plate and a lower clamping plate connected to the upper clamping plate by bolts, and the sample is fixed between the upper clamping plate and the lower clamping plate.

7. The geotextile water permeability tester according to claim 1, characterized in that: The driving assembly comprises a motor arranged in a frame, the motor is connected to the floating platform through a worm gear structure, and the bottom of the installation pipe is connected to a water inlet pipe.

8. The geotextile water permeability tester according to claim 1, characterized in that: A baffle is provided between the water outlet bin and the weighing bin.

9. The geotextile water permeability tester according to claim 8, characterized in that: The bottom of the test chamber and the water outlet chamber are connected with a second water outlet pipe.

10. The geotextile water permeability tester according to claim 1, characterized in that: The control component comprises a display screen and control buttons arranged on the frame.

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