Permeability coefficient testing device convenient for sampling

Abstract

The utility model discloses a permeability coefficient testing device convenient for sampling, which belongs to the technical field of permeability coefficient testing, and comprises a water tank and a cylinder placed in the water tank, a push plate is arranged in the cylinder, a push rod is arranged above the push plate, an operating rod is arranged on the outer side of the cylinder, and the operating rod is connected with the water tank. The top of the operating rod is movably connected with the push rod, a connecting rod is arranged on the operating rod, a clamp is arranged at the other end of the connecting rod, and the clamp is arranged on the cylinder. During sampling, the clamp is clamped on any side of the cylinder, the push plate is placed in the cylinder and is positioned on the top surface of a sample, and the sample can be easily taken out by pressing the operating rod, the push rod and the push plate to push the sample to move downwards; the sampling mode utilizes the scissor lever principle, and is very practical, labor-saving, safe and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of water permeability coefficient testing, in particular to a water permeability coefficient testing device which is convenient for sampling. Background Art

[0002] Appendix C of the National Standard of the People's Republic of China GB / T 25993-2010 "Permeable Pavement Bricks and Permeable Pavement Slabs" stipulates the following method requirements for permeability coefficient testing: Φ75-20 cylinders with a thickness equal to the product thickness are made on three products as test specimens; the four sides of the specimens are sealed with sealing materials or other means to prevent water leakage, and water only penetrates from the upper and lower surfaces of the specimens; after the sealing material is cured, it needs to be vacuumed and soaked, then taken out and placed in the permeability coefficient testing device, the specimen and the permeable cylinder are connected and sealed, and the permeability coefficient test is started.

[0003] Based on the above national standard requirements, after the actual test of the original equipment is completed, it is difficult to remove the sample from the cylinder because the sealing material is firmly sealed to the cylinder. A strong iron rod is often used to support the cylinder on the ground and push the sample out with force. This process is relatively dangerous and may cause facial injury if not careful, and it is also quite difficult. Utility Model Content

[0004] The utility model aims to provide a water permeability test device which is convenient for sampling, and solves the problem that after the actual test is completed, in the existing equipment, it is difficult to take out the sample from the cylinder because the sealing material is firmly connected to the cylinder.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The utility model discloses a water permeability testing device which is convenient for sampling, comprising a water tank and a cylinder placed in the water tank, a push plate being provided inside the cylinder, a push rod being provided above the push plate, an operating rod being provided outside the cylinder, the top of the operating rod being movably connected to the push rod, a connecting rod being provided on the operating rod, a clip being provided at the other end of the connecting rod, and the clip being provided on the cylinder.

[0007] Furthermore, a rubber pad is provided on the clamping portion of the clamp.

[0008] Furthermore, a support plate is provided at the bottom of the water tank, a limiting mechanism for fixing the water tank is provided on the top surface of the support plate, a plurality of support columns are provided on the bottom surface of the support plate, and an adjustment component is provided on the bottom surface of the support columns.

[0009] Furthermore, the limiting mechanism includes two limiting components arranged symmetrically on the left and right, and the two limiting components are set on the left and right sides of the water tank. The limiting component includes a fixed seat, and the fixed seat is set on the top surface of the support plate. A pull rod is set on the fixed seat, and a limiting plate is set at the end of the pull rod. A spring is sleeved on the pull rod, and the two ends of the spring are set on the opposite surfaces of the limiting plate and the fixed seat.

[0010] Furthermore, the adjustment assembly includes a base, a first wedge block is provided on the top surface of the base, a second wedge block is provided above the first wedge block, an adjustment screw is provided on one side of the second wedge block, the adjustment screw is rotatably connected to the base, and the support column is provided on the top surface of the second wedge block.

[0011] Compared with the prior art, the beneficial technical effects of the present invention are:

[0012] When taking samples, the utility model clamps the clamp on either side of the cylinder, puts the push plate into the cylinder so that the push plate is located on the top surface of the sample, presses the operating lever, and the push rod and the push plate push the sample downward, so that the sample can be easily taken out; this sampling method utilizes the scissor lever principle, is very practical, labor-saving, safe, and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of the water permeability test device for easy sampling during testing of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the water permeability test device for easy sampling of the utility model during sampling;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment component of the utility model.

[0018] Explanation of the accompanying symbols: 1. Water tank; 2. Cylinder; 3. Push plate; 4. Push rod; 5. Operating lever; 6. Connecting rod; 7. Clamp; 8. Rubber pad; 9. Support plate; 10. Fixed seat; 11. Limit plate; 12. Pull rod; 13. Spring; 14. Support column; 15. Adjustment assembly; 15-1. Base; 15-2. First wedge block; 15-3. Second wedge block; 15-4. Adjustment screw; 16. Sample. DETAILED DESCRIPTION

[0019] like Figure 1-4As shown, a water permeability testing device that is convenient for sampling includes a water tank 1 and a cylinder 2 placed in the water tank 1, the water tank 1 and the cylinder 2 are both connected to an overflow pipe, a valve is installed on the overflow pipe, a push plate 3 is provided inside the cylinder 2, a push rod 4 is connected above the push plate 3, an operating rod 5 is provided on the outside of the cylinder 2, the top of the operating rod 5 is movably connected to the push rod 4 through a connecting shaft, a connecting rod 6 is movably connected to the operating rod 5, the other end of the connecting rod 6 is connected to a clamp 7, the side of the clamp 7 is connected to a mounting seat, the connecting rod 6 is movably connected to the mounting seat, and the clamp 7 is clamped on the side wall of the cylinder 2.

[0020] The clamping part of the clamp 7 is connected with a rubber pad 8. By providing the rubber pad 8, the connection between the clamp 7 and the cylinder 2 is made more secure to prevent sliding. At the same time, the rubber pad 8 has a buffering and protective effect to prevent the clamp from damaging the cylinder.

[0021] A support plate 9 is provided at the bottom of the water tank 1, and a limiting mechanism for fixing the water tank 1 is provided on the top surface of the support plate 9. A plurality of support columns 14 are connected to the bottom surface of the support plate 9, and an adjustment component 15 is connected to the bottom surface of the support column 14. A level is fixed to the surface of the support plate 9 close to the water tank 1 by bolts, which helps the user to more intuitively observe whether the test instrument is level.

[0022] Specifically, the limiting mechanism includes two limiting components that are symmetrically arranged on the left and right, and the two limiting components are arranged on the left and right sides of the sink 1. The limiting component includes a fixed seat 10, and the fixed seat 10 is connected to the top surface of the support plate 9. A pull rod 12 is slidably connected to the fixed seat 10, and the end of the pull rod 12 is connected to the limiting plate 11. A spring 13 is sleeved on the pull rod 12, and the two ends of the spring 13 are connected to the opposite surfaces of the limiting plate 11 and the fixed seat 10; specifically, the sink 1 and the cylinder 2 are both cylindrical, and the limiting plate 11 is set as an arc plate; pulling the two pull rods 12 to the left and right sides drives the two limiting plates 11 away from each other, the spring 13 is compressed, and the sink 1 is placed between the two limiting plates 11, and the two pull rods 12 are released. Under the elastic force of the spring 13, the two limiting plates 11 clamp the sink 1.

[0023] like Figure 4As shown, the adjustment assembly 15 includes a base 15-1, the top surface of the base 15-1 is connected to a first wedge block 15-2, the upper part of the first wedge block 15-2 is slidably connected to a second wedge block 15-3, the inclined surface of the first wedge block 15-2 and the inclined surface of the second wedge block 15-3 cooperate with each other, one side of the second wedge block 15-3 is threadedly connected to an adjusting screw 15-4, the operating end of the adjusting screw 15-4 is rotatably connected to the base 15-1, the operating end of the adjusting screw 15-4 extends to the outside of the base 15-1, and the top surface of the second wedge block 15-3 is connected to the support column 14.

[0024] When the level of the support plate 9 needs to be adjusted, the user observes the support plate 9's tilt direction by observing the bubble in the level. This indicates that the position is too high and requires adjustment of the height of the position adjustment assembly 15. The adjustment method is as follows: the user rotates the adjustment screw 15-4, which moves the second wedge 15-3, changing the overall height of the adjustment assembly 15 to keep the support plate 9 level.

[0025] The use process of this utility model is as follows:

[0026] First, when conducting a water permeability coefficient test, a cylinder with a thickness of Φ75-20 and the same thickness as the product is made on three products as a sample. The four sides of the sample 16 are sealed with sealing material or other means to prevent water leakage. Water only penetrates from the upper and lower surfaces of the sample 16. After the sealing material is cured, it needs to be vacuumed and soaked. Then it is taken out and placed in the water permeability coefficient testing device. The sample 16 and the permeable cylinder 2 are connected and sealed, and the water permeability coefficient test is started.

[0027] During the test, water is added into cylinder 2 until the water level is flush with the specified scale. After the water level stabilizes, the water volume Q is recorded. At the same time, a stopwatch is used to time the test. When the water level is flush with the top surface of the test piece, the timer is stopped. The seconds are counted as T, and the water permeability coefficient k is calculated using the following formula:

[0028] The calculation formula of permeability coefficient is: k = Q / T

[0029] In the formula: k--permeability coefficient (mm 2 / s);

[0030] Q--water permeability (mm 2 );

[0031] T--time (s)

[0032] The same sample was tested three times and the average value was taken as the final permeability coefficient.

[0033] After the test is completed, the sample 16 is taken out. The specific method is to clamp the clamp 7 on either side of the cylinder 2, put the push plate 3 into the cylinder 2, make the push plate 3 located on the top surface of the sample 16, press the operating rod 5, and the push rod 4 and the push plate 3 push the sample 16 downward, and the sample 16 can be easily taken out; this sampling method uses the scissor lever principle, which is very practical, labor-saving, safe, and highly practical.

[0034] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A water permeability test device convenient for sampling, comprising a water tank (1) and a cylinder (2) placed in the water tank (1), characterized in that: A push plate (3) is provided inside the cylinder (2), a push rod (4) is provided above the push plate (3), an operating rod (5) is provided outside the cylinder (2), the top of the operating rod (5) is movably connected to the push rod (4), a connecting rod (6) is provided on the operating rod (5), and a clip (7) is provided at the other end of the connecting rod (6), and the clip (7) is provided on the cylinder (2).

2. The water permeability test device for easy sampling according to claim 1, characterized in that: A rubber pad (8) is provided on the clamping portion of the clamp (7).

3. The water permeability test device for easy sampling according to claim 1, characterized in that: A support plate (9) is provided at the bottom of the water tank (1); a limiting mechanism for fixing the water tank (1) is provided on the top surface of the support plate (9); a plurality of support columns (14) are provided on the bottom surface of the support plate (9); and an adjustment assembly (15) is provided on the bottom surface of the support columns (14).

4. The water permeability test device for easy sampling according to claim 3, characterized in that: The limiting mechanism includes two limiting components that are symmetrically arranged on the left and right sides. The two limiting components are arranged on the left and right sides of the water tank (1). The limiting component includes a fixed seat (10). The fixed seat (10) is arranged on the top surface of the support plate (9). A pull rod (12) is arranged on the fixed seat (10). A limiting plate (11) is arranged at the end of the pull rod (12). A spring (13) is sleeved on the pull rod (12). The two ends of the spring (13) are arranged on the opposite surfaces of the limiting plate (11) and the fixed seat (10).

5. The water permeability test device for easy sampling according to claim 3, characterized in that: The adjustment assembly (15) comprises a base (15-1), a first wedge block (15-2) is provided on the top surface of the base (15-1), a second wedge block (15-3) is provided above the first wedge block (15-2), an adjustment screw (15-4) is provided on one side of the second wedge block (15-3), the adjustment screw (15-4) is rotatably connected to the base (15-1), and the support column (14) is provided on the top surface of the second wedge block (15-3).

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