An automated wet-dry cycle test device

Abstract

The present invention discloses an automated wet-dry cycle test device, comprising a circulating filter box, a bracket, a drying cover plate, a water feeder, a control switch and a rotating motor; the circulating filter box is installed above the bracket, and a hole is reserved in the center of the bracket for installing the rotating motor; a sieve plate is arranged at the bottom of the circulating filter box, and a plurality of sieve holes are arranged on the sieve plate; a plurality of transmission rods are connected between the sieve plate and the output shaft of the rotating motor, and when the rotating motor rotates, the circulating filter box is driven to rotate by the transmission rods; a plurality of waterproof partitions are arranged inside the circulating filter box, and the waterproof partitions divide the internal space of the circulating filter box into a plurality of independent areas to accommodate a plurality of samples; the drying cover plate is arranged above the circulating filter box to dry the sample after being immersed in water; the water feeder is installed on the bracket, and is used to inject water into the circulating filter box; the present invention automates the wet-dry cycle test, and batch operation of the test can be realized by carrying out the test of multiple groups of samples simultaneously.

Description

Technical Field

[0001] The invention relates to the field of geotechnical engineering, and in particular to an automatic dry-wet cycle testing device. Background Art

[0002] Under conditions such as rainfall-evaporation, groundwater level and reservoir water level fluctuation, rock and soil are often in a state of dry-wet cycle, which causes damage and accumulates with the increase of the number of cycles, resulting in rapid deterioration of physical and mechanical properties and greatly reduced stability. In order to study the deterioration law of the physical and mechanical properties of rock and soil under the action of dry-wet cycle, rock and soil samples are usually subjected to several dry-wet cycle treatments in the laboratory before relevant physical and mechanical samples are tested. At present, most of the methods for treating rock and soil samples with dry-wet cycles are to first put the rock and soil samples into a water tank and soak them in water, then take them out after soaking for a period of time and put them in an oven for drying, and then put them into a water tank and soak them after cooling them to room temperature, and repeat this cycle. Usually, the number of dry-wet cycles for rock and soil samples is large, the operation is cumbersome, time-consuming and labor-intensive, and is greatly limited by laboratory conditions and the time of test personnel. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide an automated dry-wet cycle test device that can automate the dry-wet cycle test and realize the dry-wet cycle of batches of samples.

[0004] Technical solution: The present invention includes a circulating filter box, a bracket, a drying cover, a water feeder, a control switch and a rotating motor; the circulating filter box is installed above the bracket, and a hole is reserved in the center of the bracket for installing the rotating motor; a sieve plate is arranged at the bottom of the circulating filter box, and a plurality of sieve holes are arranged on the sieve plate; a plurality of transmission rods are connected between the sieve plate and the output shaft of the rotating motor, and when the rotating motor rotates, the circulating filter box is driven to rotate by the transmission rods; a plurality of waterproof partitions are arranged at intervals inside the circulating filter box, and the waterproof partitions divide the internal space of the circulating filter box into a plurality of independent areas for accommodating a plurality of samples; the drying cover is arranged above the circulating filter box, and the sample after being immersed in water is dried by the drying cover; the water feeder is installed on the bracket, and is used to inject water into the circulating filter box; the control switch is connected to the water feeder and the rotating motor.

[0005] The bracket includes a bracket top plate and a plurality of support rods installed around the bracket top plate; the circulation filter box is placed above the bracket top plate; the water feeder and the control switch are installed on the support rods, and the control switch is located below the water feeder; the water outlet of the water feeder is located above the circulation filter box, and the water feeder injects water into the circulation filter box.

[0006] A circle of sliding balls is arranged on the upper surface of the bracket top plate, and the bottom surface of the circulating filter box contacts the sliding balls to reduce rotational friction.

[0007] A plurality of groups of drying induction lamps are arranged on the drying cover plate, and the drying induction lamps correspond one by one to a plurality of areas inside the circulation filter box, so that the rock samples in the box can be dried.

[0008] A weighing device is arranged on the top plate of the support, and the weighing device is used to weigh the weight of the sample in the circulation filter box, and it is not necessary to take it out of the circulation filter box.

[0009] The control switch is connected to a display, which displays the set single cycle time and cycle number of the cycle filter box, and also displays the mass measured after each dry-wet cycle of the sample.

[0010] Leakage holes are arranged in a part of the top plate of the support, a water collecting tank is connected below the top plate of the support, and a drainage pipe is arranged on the side of the water collecting tank to achieve drainage.

[0011] The outer casing of the rotating motor is provided with a casing, and a connecting rod is connected between the casing and each supporting rod to increase the overall stability of the device.

[0012] Beneficial effects: Compared with the prior art, the technical solution of the present invention has the following beneficial effects: (1) Through fully automatic water supply and drainage, scientific researchers do not need to perform sampling cycles, which avoids the possibility of rock sample loss, making the experimental results more accurate and reliable, and greatly reduces the time of experimental personnel and improves efficiency. The operation is simple and convenient; (2) Multiple samples can be put together for testing without interfering with each other, so that multiple groups of samples can be tested simultaneously, realizing batch testing and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a structural schematic diagram of the circulating filtering water tank in the present invention;

[0015] Figure 3 for Figure 2 Schematic diagram of the bottom plate of the medium-circulation filter water tank;

[0016] Figure 4 It is a structural schematic diagram of the drying cover plate in the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the bracket in the present invention;

[0018] Figure 6 for Figure 5 Structural schematic diagram of the top plate of the middle bracket;

[0019] Figure 7 It is a structural schematic diagram of the water collecting tank in the present invention;

[0020] Figure 8 It is a structural schematic diagram of the control switch in the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described in detail below in conjunction with specific implementation methods and the accompanying drawings of the specification.

[0022] like Figure 1 As shown, the present invention comprises a circulation filter box 1, a bracket 2, a drying cover plate 3, a water collecting box 4, a water feeder 5, a control switch 6 and a rotating motor 7. The circulation filter box 1 is installed above the bracket 2.

[0023] like Figure 2 As shown, a plurality of waterproof partitions 11 are arranged equidistantly inside the circulation filter box 1. The waterproof partitions 11 separate the groups of test rock samples, and the thickness of the partitions exceeds 2 mm from the bottom of the circulation filter box 1. The waterproof partitions 11 divide the internal space of the circulation filter box 1 into a plurality of independent areas to accommodate a plurality of samples. A sieve plate 13 is arranged at the bottom of the circulation filter box 1, and a plurality of sieve holes 15 are arranged on the sieve plate 13. The sieve holes are used to filter the debris generated by the test rock samples and the impurities generated during the experiment. The sieve plates with different hole diameters can be replaced according to the needs of the test. The sieve plate 13 has equidistant card slots 12 that are fixed to the excess 2 mm partitions. The circulation filter box of the corresponding diameter can be selected according to the requirements of the number of samples in the test.

[0024] like Figure 1 and Figure 4 As shown, the drying cover plate 3 is arranged above the circulation filter box 1, and the sample after being immersed in water is dried by the drying cover plate 3; specifically, the drying cover plate 3 is fan-shaped, and a plurality of groups of drying induction lamps 31 are arranged on the drying cover plate 3, and the drying induction lamps 31 are arranged one by one corresponding to the plurality of areas inside the circulation filter box 1. When the corresponding box is sensed to contain a rock sample, the drying induction lamp 31 is automatically turned on.

[0025] like Figure 5 and Figure 6As shown, the bracket 2 includes a bracket top plate 21 and three support rods 22. The bracket top plate 21 is a ring structure. The support rods 22 are installed around the bracket top plate 21, and the three support rods are arranged in a triangular structure. The circulation filter box 1 is placed above the bracket top plate 21; a circle of sliding balls 24 are arranged on the upper surface of the bracket top plate 21, and the bottom surface of the circulation filter box 1 is in contact with the sliding balls 24. A hole 23 is reserved in the center of the bracket top plate 21 for installing the rotating motor 7. A casing 71 is arranged outside the rotating motor 7, and a connecting rod 25 is connected between the casing 71 and each support rod 22 to increase the overall stability of the device. A plurality of transmission rods 14 are connected between the inner ring of the sieve plate 13 and the output shaft of the rotating motor 7, and the plurality of transmission rods 14 are equidistantly arranged in the inner ring of the sieve plate 13. When the rotating motor 7 rotates, the circulation filter box 1 is driven to rotate through the transmission rod. Since a circle of sliding balls 24 is arranged between the circulation filter box 1 and the bracket 2, when the rotary motor 7 drives the circulation filter box 1 to rotate, the friction resistance between the circulation filter box 1 and the bracket 2 will be greatly reduced, making the rotation smooth.

[0026] The water feeder 5 and the control switch 6 are installed outside one of the support rods 22, and the control switch 6 is located below the water feeder 5. The control switch 6 is electrically connected to the water feeder 5 and the rotating motor 7. The water outlet of the water feeder 5 is located above the circulation filter box 1, and the water feeder 5 can inject water into the circulation filter box 1. The control switch 6 is connected to the display 61, which displays the set single cycle time and number of cycles of the circulation filter box 1, and also displays the mass measured after each dry-wet cycle of the sample, so as to achieve fine automation, such as Figure 8 As shown. The number of cycles of different groups can be selected by operating the display 61. One rotation is one cycle. Samples with different cycle requirements can be put together for testing without interfering with each other, so that multiple groups of samples can be tested simultaneously, realizing batch testing and improving efficiency. A weighing device 8 is set on the top plate 21 of the bracket, and the weighing device 8 is used to weigh the weight of the sample in the circulating filter box 1. A leakage hole 9 is set in one-third of the area on the top plate 21 of the bracket for drainage.

[0027] like Figure 1 and Figure 7 As shown, the bottom of the bracket top plate 21 is connected to the water collecting box 4, the upper surface of the water collecting box 4 is open and a drainage pipe 41 is arranged on the side.

[0028] Assuming that the immersion saturation time of this test is 48 hours and the drying time is 24 hours, 18 groups of equidistant waterproof partitions 11 are selected in this example; therefore, the single cycle time is set to 72 hours on the control switch 6, that is, the rotation time of each group is 4 hours. Click OK to start, the weighing device 8 measures the weight of the sample and records it in the display 61, the water supply device 5 automatically fills with water, and then the rotating motor 7 starts to rotate, rotating once every 4 hours, each time rotating the distance of a group of waterproof partitions 11. After 48 hours, the area with the sample is transferred to the bottom of the drying cover plate 3. Since the top plate 21 of the bracket in the corresponding area is provided with a leakage hole 9, the water is discharged into the water collecting tank 4; the drying induction lamp 31 is turned on. Until it reaches the bottom of the water supply device 5, the sample is dried for 24 hours, and the weighing device 8 measures the sample mass again, that is, one cycle of dry and wet cycle is completed.

[0029] This device realizes fully automatic water supply and drainage, and does not require back and forth soaking and drying. The amount of rock samples for the cyclic test is large, and samples of different groups of dry-wet cycle times can be carried out simultaneously, making the test batch-based and avoiding the possibility of rock sample loss, making the experimental results more accurate and reliable, and greatly reducing the time of the test personnel and improving efficiency. The operation is simple and convenient.

Claims

1. An automated dry-wet cycle test device, Features: The invention comprises a circulation filter box (1), a bracket (2), a drying cover plate (3), a water feeder (5), a control switch (6) and a rotating motor (7); the circulation filter box (1) is installed above the bracket (2), and a hole (23) is reserved in the center of the bracket (2) for installing the rotating motor (7); a sieve plate (13) is arranged at the bottom of the circulation filter box (1), and a plurality of sieve holes (15) are arranged on the sieve plate (13); a plurality of transmission rods (14) are connected between the sieve plate (13) and the output shaft of the rotating motor (7), and when the rotating motor (7) rotates, the circulation filter box (1) is driven to rotate through the transmission rods; A plurality of waterproof partitions (11) are arranged at intervals inside the circulation filter box (1), and the waterproof partitions (11) divide the internal space of the circulation filter box (1) into a plurality of independent areas for accommodating a plurality of samples; The drying cover plate (3) is arranged above the circulation filter box (1), and the sample after being immersed in water is dried through the drying cover plate (3); The water feeder (5) is mounted on the bracket (2) and is used to inject water into the circulation filter box (1); the control switch (6) is connected to the water feeder (5) and the rotating motor (7); A plurality of groups of drying induction lamps (31) are arranged on the drying cover plate (3), and the drying induction lamps (31) correspond one-to-one to a plurality of areas inside the circulation filter box (1).

2. The automated dry-wet cycle test device according to claim 1, Features: The support (2) comprises a support top plate (21) and a plurality of support rods (22) mounted around the support top plate (21); the circulation filter box (1) is placed above the support top plate (21); the water feeder (5) and the control switch (6) are mounted on the support rods (22), and the control switch (6) is located below the water feeder (5); and the water outlet of the water feeder (5) is located above the circulation filter box (1).

3. The automated dry-wet cycle test device according to claim 2, Features: A circle of sliding balls (24) is provided on the upper surface of the bracket top plate (21), and the bottom surface of the circulation filter box (1) is in contact with the sliding balls (24).

4. The automated dry-wet cycle test device according to claim 2, Features: A weighing device (8) is arranged on the support top plate (21), and the weighing device (8) is used to weigh the weight of the sample in the circulation filter box (1).

5. The automated dry-wet cycle test device according to claim 1, Features: The control switch (6) is connected to a display (61), and the display (61) displays the set single cycle time and cycle number of the cycle filter box (1), and also displays the mass measured after each dry-wet cycle of the sample.

6. The automated dry-wet cycle test device according to claim 2, Features: A partial area of ​​the support top plate (21) is provided with a leakage hole (9); the bottom of the support top plate (21) is connected to a water collecting tank (4); and a drainage pipe (41) is provided on the side of the water collecting tank (4).

7. The automated dry-wet cycle test device according to claim 2, Features: A casing (71) is disposed outside the rotating motor (7), and a connecting rod (25) is connected between the casing (71) and each supporting rod (22).

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