Concrete water permeability testing device

Abstract

A concrete water permeability testing device comprises a base, the base is provided with a vacuum water tank and a water cylinder, the top of the vacuum water tank is provided with a vacuum exhaust pipe, the vacuum exhaust pipe is connected to a vacuum pump, the bottom of the vacuum water tank is provided with a water conveying pipe, the water conveying pipe is provided with a water suction pump and a water inflow adjusting valve, and the output end of the water conveying pipe extends to the position over the water cylinder; an overflow water tank and a water receiving tank are arranged on the base, a second overflow pipe is arranged on the side wall of the overflow water tank and located over the water receiving tank, a drainage pipe is arranged at the bottom of the side wall of the water receiving tank and penetrates through the interior of the base, and a drainage opening is formed in one end of the base; and the water cylinder is arranged in the overflow water tank and is lapped on the test piece at the bottom of the overflow water tank. By the adoption of the structure, the problems in the prior art can be effectively solved, accurate control over the water adding amount and scattering prevention are guaranteed, meanwhile, data such as the temperature in the test process are monitored, and finally the purpose of improving the accuracy of the test result is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete detection, in particular to a concrete water permeability testing device. Background Art

[0002] The existing concrete water permeability test procedures ("Permeable Pavement Bricks and Permeable Road Slabs" GB / T 25993 and "Technical Specifications for Permeable Cement Concrete Pavement" CJJ / T135-2009) record the test steps for concrete water permeability, which is to place concrete at the bottom of a water cylinder and detect the amount of water overflowing from the water cylinder after a certain period of time. The existing detection device needs to use an external water pipe to draw water and add water. During the water adding process, the water splashed out is easy to directly spill into the measuring cylinder, resulting in deviation in the final test result. In addition, the water adding process relies on manual adjustment, and the amount of water added cannot be accurately controlled. In addition, since the performance of concrete is affected by the external temperature and changes, the external factors in the test cannot be monitored, which is also easy to cause deviation in the test data. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a concrete water permeability testing device, which can effectively solve the problems in the prior art, monitor the temperature and other data during the test while ensuring the precise control of the amount of water added and preventing spillage, and ultimately achieve the purpose of improving the accuracy of the test results.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a concrete water permeability test device, comprising a base, a vacuum water tank and a water cylinder are arranged on the base, a vacuum suction pipe is arranged on the top of the vacuum water tank, the vacuum suction pipe is connected to a vacuum pump arranged in the base, a water delivery pipe passing through the inside of the base is arranged at the bottom of the vacuum water tank, a water pump and a water inlet regulating valve are arranged on the water delivery pipe, and the output end of the water delivery pipe extends to the top of the water cylinder;

[0005] The base is provided with an overflow water tank and a water receiving tank, a second overflow pipe is provided on the side wall of the overflow water tank, the second overflow pipe is located directly above the water receiving tank, a drain pipe with a drain valve is provided at the bottom of the side wall of the water receiving tank, the drain pipe passes through the inside of the base and forms a drain port at one end of the base;

[0006] The water cylinder is arranged in the overflow water tank, and the water cylinder is placed on the test piece located at the bottom of the overflow water tank.

[0007] In a preferred solution, the top surface of the vacuum water tank is sealed by a cover body, and a pressure regulating pipe with a valve is provided on the cover body.

[0008] In the preferred embodiment, a second overflow pipe is provided on the side wall of the water cylinder, an overflow water receiving pipe is provided on the base, the second overflow pipe extends to the top of the overflow water receiving pipe, a pipe is provided at the bottom of the overflow water receiving pipe and passes downward into the base, and the end of the pipe is connected to the drain pipe.

[0009] In a preferred solution, a liquid level measuring tube is provided in the water receiving tank, a floating sheet is provided in the liquid level measuring tube, the floating sheet floats on the liquid surface in the water receiving tank, and a laser ranging sensor is provided on the top of the liquid level measuring tube.

[0010] In a preferred solution, a control switch for controlling the vacuum pump and the water pump is provided on the base.

[0011] In a preferred solution, a leveling screw is provided at the bottom of the base, and a level bubble is provided on the top surface of the base.

[0012] In a preferred solution, a temperature sensor is also provided on the side wall of the overflow water tank, and the temperature sensor is connected to a temperature display meter provided on the outer side wall of the base.

[0013] In a preferred solution, the water pump is connected to a vacuum pressure gauge arranged on the outer side wall of the base;

[0014] The laser distance measuring sensor is connected to a liquid level display meter arranged on the outer side wall of the base.

[0015] In a preferred solution, a stopwatch is also provided on the outer side wall of the base.

[0016] The concrete water permeability test device provided by the utility model has the following beneficial effects by adopting the above structure:

[0017] (1) Before the test, the vacuum water tank storing the test water is evacuated by a vacuum pump to avoid adding water directly to the water cylinder through an external water pipe, which will lead to a large amount of air in the water and cause deviation in the test results;

[0018] (2) The water supply pipeline relies on the entire device to achieve self-support, and cooperates with the water pump to achieve precise control of the water intake, which solves the problem of spillage of test water and ensures the accuracy of water addition;

[0019] (3) A temperature sensor is set up to monitor the temperature during the test, which is conducive to further accurately determining the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] In the figure: base 1, vacuum water tank 2, pressure regulating pipe 201, vacuum suction pipe 3, vacuum pump 4, water cylinder 5, first overflow pipe 501, water delivery pipe 6, water pump 7, water inlet regulating valve 8, overflow water tank 9, second overflow pipe 901, water receiving tank 10, drain pipe 11, drain valve 111, drain port 112, liquid level measuring tube 12, floating plate 121, laser ranging sensor 13, leveling screw 14, level bubble 15, temperature sensor 16, vacuum pressure gauge 17, temperature display meter 18, liquid level display meter 19, stopwatch 20, overflow water receiving pipe 21, test piece 22, control switch 23. DETAILED DESCRIPTION

[0023] like Figure 1 A concrete water permeability test device is provided, comprising a base 1, a vacuum water tank 2 and a water cylinder 5 are provided on the base 1, a vacuum suction pipe 3 is provided on the top of the vacuum water tank 2, the vacuum suction pipe 3 is connected to a vacuum pump 4 provided in the base 1, a water delivery pipe 6 passing through the inside of the base 1 is provided at the bottom of the vacuum water tank 2, a water pump 7 and a water inlet regulating valve 8 are provided on the water delivery pipe 6, and the output end of the water delivery pipe 6 extends to the top of the water cylinder 5;

[0024] The base 1 is provided with an overflow water tank 9 and a water receiving tank 10. A second overflow pipe 901 is provided on the side wall of the overflow water tank 9. The second overflow pipe 901 is located directly above the water receiving tank 10. A drain pipe 11 with a drain valve 111 is provided at the bottom of the side wall of the water receiving tank 10. The drain pipe 11 passes through the inside of the base 1 and forms a drain port 112 at one end of the base 1.

[0025] The water cylinder 5 is disposed in the overflow water tank 9 , and the water cylinder 5 is placed on a test piece 22 located at the bottom of the overflow water tank 9 .

[0026] In a preferred solution, the top surface of the vacuum water tank 2 is sealed by a cover body, and a pressure regulating pipe 201 with a valve is provided on the cover body.

[0027] In the preferred embodiment, a second overflow pipe 901 is provided on the side wall of the water cylinder 5, and an overflow water receiving pipe 21 is provided on the base 1. The second overflow pipe 901 extends to the top of the overflow water receiving pipe 21. A pipe is provided at the bottom of the overflow water receiving pipe 21 and passes downward into the base 1. The end of the pipe is connected to the drain pipe 11.

[0028] In a preferred solution, a liquid level measuring tube 12 is provided in the water receiving tank 10 , a floating sheet 121 is provided in the liquid level measuring tube 12 , and the floating sheet 121 floats on the liquid surface in the water receiving tank 10 . A laser distance measuring sensor 13 is provided on the top of the liquid level measuring tube 12 .

[0029] In a preferred solution, a control switch 23 for controlling the vacuum pump 4 and the water pump 7 is provided on the base 1 .

[0030] In a preferred solution, a leveling screw 14 is provided at the bottom of the base 1 , and a level bubble 15 is provided on the top surface of the base 1 .

[0031] In a preferred solution, a temperature sensor 16 is further provided on the side wall of the overflow tank 9 , and the temperature sensor 16 is connected to a temperature display gauge 18 provided on the outer side wall of the base 1 .

[0032] In a preferred solution, the water pump 7 is connected to a vacuum pressure gauge 17 disposed on the outer side wall of the base 1;

[0033] The laser distance measuring sensor 13 is connected to a liquid level display meter 19 arranged on the outer side wall of the base 1 .

[0034] In a preferred solution, a stopwatch 20 is also provided on the outer side wall of the base 1 .

[0035] The concrete water permeability test device disclosed in the present invention is used for testing the concrete water permeability:

[0036] like Figure 1 Before the test, observe the horizontality of the device by means of the leveling screw 14 and the level bubble 15. After the device is leveled, add test water of not less than the test water amount to the vacuum water tank 2, and then start the vacuum pump 4 to evacuate the test water in the vacuum water tank 2. After the vacuum treatment is completed, add water to the overflow water tank 9 through the water pump 7 until water overflows from the second overflow pipe 901. At this time, place the test piece 22 in the overflow water tank 9, and then place the water cylinder 5 on the top of the test piece 22 to ensure that the bottom surface of the water cylinder 5 and the top surface of the test piece 22 fit tightly without any gap. Then start the water pump 7 again, and add test water to the water cylinder 5 through the water pipe 6 until water overflows from the first overflow pipe 501 (when the liquid level in the water cylinder 5 is close to the first overflow pipe 501, reduce the water adding speed by adjusting the power of the water pump 7 to minimize the overflow of the test water).

[0037] After completing the above operations, start the stopwatch 20, and then let the device stand for the required test time. During this process, observe and record the liquid level difference before and after the test through the liquid level display meter 19, and then record the time through the stopwatch 20, and finally achieve the purpose of detecting the water permeability of concrete.

[0038] After the test is completed, the drain valve 111 is started to drain the test water.

Claims

1. A concrete water permeability test device, comprising a base (1), characterized in that: The base (1) is provided with a vacuum water tank (2) and a water cylinder (5); a vacuum suction pipe (3) is provided on the top of the vacuum water tank (2); the vacuum suction pipe (3) is connected to a vacuum pump (4) provided in the base (1); a water delivery pipe (6) is provided at the bottom of the vacuum water tank (2) and passes through the inside of the base (1); a water pump (7) and a water inlet regulating valve (8) are provided on the water delivery pipe (6); and an output end of the water delivery pipe (6) extends to directly above the water cylinder (5); The base (1) is provided with an overflow trough (9) and a water receiving trough (10); a second overflow pipe (901) is provided on the side wall of the overflow trough (9); the second overflow pipe (901) is located directly above the water receiving trough (10); a drain pipe (11) with a drain valve (111) is provided at the bottom of the side wall of the water receiving trough (10); the drain pipe (11) passes through the interior of the base (1) and forms a drain outlet (112) at one end of the base (1); The water cylinder (5) is arranged in the overflow water tank (9), and the water cylinder (5) is placed on a test piece (22) located at the bottom of the overflow water tank (9).

2. A concrete water permeability test device according to claim 1, characterized in that: The top surface of the vacuum water tank (2) is sealed by a cover body, and a pressure regulating pipe (201) with a valve is provided on the cover body.

3. A concrete water permeability test device according to claim 1, characterized in that: A second overflow pipe (901) is provided on the side wall of the water cylinder (5), and an overflow water receiving pipe (21) is provided on the base (1). The second overflow pipe (901) extends to the top of the overflow water receiving pipe (21), and a pipe is provided at the bottom of the overflow water receiving pipe (21) and passes downward into the base (1), and the end of the pipe is connected to the drain pipe (11).

4. A concrete water permeability test device according to claim 1, characterized in that: A liquid level measuring tube (12) is provided in the water receiving tank (10), a floating sheet (121) is provided in the liquid level measuring tube (12), the floating sheet (121) floats on the liquid surface in the water receiving tank (10), and a laser distance measuring sensor (13) is provided on the top of the liquid level measuring tube (12).

5. A concrete water permeability test device according to claim 1, characterized in that: The base (1) is provided with a control switch (23) for controlling the vacuum pump (4) and the water pump (7).

6. A concrete water permeability test device according to claim 1, characterized in that: The bottom of the base (1) is provided with a leveling screw (14), and the top surface of the base (1) is provided with a level bubble (15).

7. A concrete water permeability test device according to claim 1, characterized in that: A temperature sensor (16) is also provided on the side wall of the overflow water tank (9), and the temperature sensor (16) is connected to a temperature display meter (18) provided on the outer side wall of the base (1).

8. A concrete water permeability test device according to claim 4, characterized in that: The water pump (7) is connected to a vacuum pressure gauge (17) arranged on the outer side wall of the base (1); The laser distance measuring sensor (13) is connected to a liquid level display meter (19) arranged on the outer side wall of the base (1).

9. A concrete water permeability test device according to claim 1, characterized in that: A stopwatch (20) is also provided on the outer side wall of the base (1).

Images