Permeability coefficient testing device

Abstract

The utility model provides a permeability coefficient test device, including test rack, water storage tank, overflow water tank, permeable cylinder, water collection tank and sample installation module, said water storage tank is provided the top of test rack, the front end of test rack is provided with test platform, overflow water tank is provided on the test platform, the upper end of overflow water tank is provided with overflow mouth, and the sample installation module is provided with the permeable cylinder. The water permeable cylinder is arranged in the overflow water tank, a water inlet and a water outlet are formed in the upper end of the water permeable cylinder, the water inlet is connected with the water storage tank through a pipeline, the sample mounting module is placed in the water permeable cylinder, and the sample mounting module comprises a metal sleeve of a cylindrical structure and an inflation sealing layer arranged on the inner wall of the metal sleeve; the water collecting tank is arranged at the bottom of the test rack and is respectively connected with a water outlet of the permeable cylinder and an overflow port of the overflow water tank through pipelines. The water-permeable pavement brick and water-permeable cement concrete water-permeable detection device can be used for detecting water permeability of two samples of water-permeable pavement bricks and water-permeable cement concrete at the same time, and is high in detection efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of building engineering quality inspection, and particularly relates to a permeability coefficient test device. Background Art

[0002] With the development of sponge city construction, the application of permeable concrete and permeable pavement bricks in urban municipal engineering is constantly increasing. As the main performance index of permeable concrete and permeable pavement bricks, the detection volume of the permeability coefficient is also increasing.

[0003] At present, the permeability coefficient test devices for permeable concrete and permeable pavement bricks have the following deficiencies:

[0004] 1. The integrity of the test device is poor. Each test requires assembling the equipment and setting the height difference by relying on other external objects. During the test, manual water addition is required, and the operation is cumbersome and inefficient.

[0005] 2. A container is used to collect the permeated water, and then a measuring cylinder is used to read the amount of permeated water. The process of pouring it into the measuring cylinder is likely to cause water loss, and multiple measurements with the measuring cylinder are required for one test, which is likely to lead to large errors in the detection data and the operation is rather troublesome.

[0006] 3. The installation of the specimen is troublesome. At present, the specimen installation module uses a pure metal single cylinder. When installing the specimen, it is necessary to manually wrap waterproof tape or use other sealing means to seal the side of the specimen; after relying on experience to seal an appropriate thickness, it is manually pressed into the installation module for fixation. The sealing thickness on the side of the specimen is difficult to control, the whole operation process is rather troublesome, and the sealing effect is poor after being pressed in.

[0007] 4. In "Permeable Pavement Bricks and Pavement Panels" GB / T 25993 - 2010, the permeability coefficient sample is φ75 0 -2 mm, and in "Technical Specification for Permeable Cement Concrete Pavement" CJJ / T 135 - 2009, the permeability coefficient sample is φ100mm. The existing test devices are two sets of separate equipment, and the two types of test samples cannot use the same set of equipment, resulting in a high use cost. Summary of the Invention

[0008] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a permeability coefficient test device that can simultaneously perform permeability detection on two types of samples, namely permeable pavement bricks and permeable cement concrete, and has high detection efficiency and good detection accuracy.

[0009] The technical solution adopted by the utility model is as follows:

[0010] A permeability coefficient test device includes a test rack, a water storage tank, an overflow water tank, a permeable cylinder, a water collection tank and a specimen installation module. The test rack is a frame-type rack structure. The rear end of the test rack protrudes upward to form an installation platform. The water storage tank is arranged on the installation platform. The front end of the test rack is provided with a test platform. The overflow water tank is arranged on the test platform. The upper end of the overflow water tank is open, and an overflow port is arranged at the upper end of the overflow water tank. The permeable cylinder is arranged in the overflow water tank. The permeable cylinder is a cylindrical structure and is transparent up and down. An inlet and an outlet are respectively arranged at the upper end of the permeable cylinder. The inlet is connected to the water storage tank through a pipeline, and a water inlet valve is arranged on the pipeline. The specimen installation module is placed in the permeable cylinder. The specimen installation module includes a metal sleeve with a cylindrical structure and an inflatable sealing layer arranged on the inner wall of the metal sleeve. The water collection tank is arranged at the bottom of the test rack. The water collection tank is connected to the outlet of the permeable cylinder and the overflow port of the overflow water tank through pipelines respectively.

[0011] Further, the height of the outlet is lower than that of the inlet.

[0012] Further, the inflatable sealing layer is made of soft rubber. An air valve is externally connected to the inflatable sealing layer. The air valve extends to the outside of the metal sleeve. The sample to be tested is placed in the inflatable sealing layer.

[0013] Further, a water flow meter is arranged on the pipeline connecting the overflow water tank and the water collection tank.

[0014] Further, a water pump is arranged in the water collection tank. The water pump is connected to the water storage tank through a pipeline.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The frame-type rack structure is adopted, so that the whole device is within the range of the bracket, forming an integral unit without repeated disassembly and installation. The water storage tank and the water collection tank are used, and through the connection mode of the water pump and the pipeline, the water used in the test process can be automatically circulated, reducing manual operation and effectively saving water use.

[0017] 2. The water flow meter is adopted to automatically measure and read the test data, avoiding human errors and improving the detection accuracy.

[0018] 3. An inflatable cushion layer made of soft rubber is arranged inside the specimen installation module, and the outer layer is supported by a metal frame and is provided with an inflatable valve. When installing, the sample to be tested can be directly placed into the installation module, and then the inflatable cushion layer can be inflated through the inflatable valve, so that the soft rubber fits and seals with the specimen, reducing the time of manual operation. At the same time, the sealing effect of specimen installation is improved, and the detection accuracy is enhanced.

[0019] 4. Prepare sample installation modules, sample holders, and water permeability cylinders of two specifications, and select them according to different standard requirements, so that the whole device can meet the test requirements of two specifications of samples, namely, permeable pavement bricks and permeable cement concrete samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG Figure 1 is a schematic structural view of the water permeability coefficient test device of the present utility model;

[0021] FIG Figure 2 is Figure 1 a top view of the sample installation module shown in the figure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Next, the present utility model will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0023] As Figure 1 , Figure 2 shown, a water permeability coefficient test device includes a test stand 1, a water storage tank 2, an overflow water tank 3, a water permeable cylinder 4, a water collection tank 5, and a sample installation module 6. The test stand 1 is a frame-type structure. The rear end of the test stand 1 bulges upward to form an installation platform 11. The water storage tank 2 is arranged on the installation platform. The water storage tank 2 is used to store water. The front end of the test stand 1 is provided with a test platform 12. The overflow water tank 3 is arranged on the test platform 12. The upper end of the overflow water tank 3 is open. The overflow water tank 3 is used to load water. An overflow port 31 is arranged at the upper end of the overflow water tank 3. The water permeable cylinder 4 is arranged in the overflow water tank 3. The water permeable cylinder 4 is a cylindrical structure and is transparent up and down. An inlet 41 and an outlet 42 are respectively arranged at the upper end of the water permeable cylinder 4. Among them, the height of the outlet 42 is lower than the height of the inlet 41. The inlet 41 is connected to the water storage tank 2 through a pipeline, and a water inlet valve 21 is arranged on the pipeline. The water inlet valve 21 is used to control the opening and closing of the pipeline. By adjusting the water inlet valve 21 to control the water inflow, the liquid level in the water permeable cylinder 4 is kept flush with the outlet 42, that is, the test water level difference is maintained. The sample installation module 6 is placed in the water permeable cylinder 4. The sample installation module 6 is used to install the sample to be tested. As Figure 2As shown in the figure, the specimen installation module 6 includes a metal sleeve 61 with a cylindrical structure and an inflatable sealing layer 62 provided on the inner wall of the metal sleeve 61. The inflatable sealing layer 62 is made of soft rubber, and an air valve 63 is externally connected to the inflatable sealing layer 62. The air valve 63 extends to the outside of the metal sleeve 61. The installation of the specimen to be tested is placed inside the inflatable sealing layer 62. When inflated, the inflatable sealing layer 62 can completely fit and seal with the side of the specimen to be tested, enabling the soft rubber to fit and seal with the specimen to be tested, reducing the time of manual operation, and at the same time improving the sealing effect of the installation of the specimen to be tested. The water collection tank 5 is arranged at the bottom of the test stand 1. The water collection tank 5 is used to collect water. The water collection tank 5 is connected to the water outlet 42 of the permeable cylinder 4 and the overflow port 31 of the overflow water tank 3 through pipelines respectively. The water in the permeable cylinder 4 and the overflow water tank 3 enters the water collection tank 5 through pipelines for collection. Among them, a water flowmeter 32 is arranged on the pipeline connecting the overflow water tank 3 and the water collection tank 5. The water flowmeter 32 is used for detecting and recording the water flow. Further, a water pump 51 is arranged inside the water collection tank 5. The water pump 51 is connected to the water storage tank 2 through a pipeline. Through the water pump 51, the water in the water storage tank 2 can be pumped into the water storage tank 2 to realize the recycling of water.

[0024] The usage method of the present utility model is as follows:

[0025] 1. Place the specimen to be tested into the specimen installation module 6, and inflate the inflatable sealing layer 62 through the air valve 63 so that after inflation, the inflatable sealing layer 62 completely fits and seals with the side of the specimen. Place the specimen installation module 6 with the specimen to be tested installed on the test platform 11, and install and dock the permeable cylinder 4 above the specimen installation module.

[0026] 2. Add water to the overflow water tank 3 until the water flows out through the water flowmeter 32 from the overflow port of the water tank. Fill the water storage tank 2 with test water, open the water inlet valve 21, and make the water enter the permeable cylinder 4 through the water inlet 41 until the water flows out from the water outlet 42 of the permeable cylinder. Control the water inflow by adjusting the water inlet valve 21 to keep the liquid level in the permeable cylinder 3 flush with the water outlet 42, that is, maintain the test water level difference.

[0027] 3. After the water flow at the water outlet 42 and through the water flowmeter 32 stabilizes, set the recording time of the water flowmeter 32 according to the water flow recording duration requirement of the standard, and open the water flowmeter 32 to detect and record the water flow.

[0028] 4. After the test is completed, take out the specimen installation module 6, deflate through the air valve 63, take out the specimen to be tested, and repeat steps 1 - 3 to complete the detection of the next specimen.

[0029] 5. The test water in the overflow water tank 3 flows into the lower water collection tank 5 through the pipeline. When the water volume in the water storage tank 2 is insufficient, open the water pump 51 to pump water from the water collection tank 5 into the water storage tank 2 to realize recycling.

[0030] In the utility model, a soft rubber inflatable cushion layer is arranged inside the yellow sample installation module, and the outer layer is supported by a metal frame and is provided with an inflation valve. During installation, the sample to be tested can be directly placed into the installation module, and then the inflation valve is used to inflate the inflatable cushion layer, so that the soft rubber fits and seals with the sample, reducing the time of manual operation and improving the sealing effect of sample installation. At the same time, a water flowmeter is used to automatically read the test data to avoid human errors.

[0031] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A water permeability coefficient test device, comprising a test frame, a water storage tank, an overflow tank, a water permeable cylinder, a water collecting tank and a sample installation module, characterized in that: The test frame is a frame-type frame structure, and the rear end of the test frame protrudes upward to form an installation platform. The water storage tank is arranged on the installation platform, and the test platform is arranged at the front end of the test frame. The overflow trough is arranged on the test platform, and the upper end of the overflow trough is open, and the upper end of the overflow trough is provided with an overflow port. The permeable cylinder is arranged in the overflow trough. The permeable cylinder is a cylindrical structure, which is transparent from top to bottom. The upper end of the permeable cylinder is respectively provided with a water inlet and a water outlet, and the water inlet is connected to the water storage tank through a pipe, and the pipe is provided with a water inlet valve. The sample installation module is placed in the permeable cylinder. The sample installation module includes a metal sleeve of a cylindrical structure and an inflatable sealing layer arranged on the inner wall of the metal sleeve. The water collecting tank is arranged at the bottom of the test frame, and the water collecting tank is respectively connected to the water outlet of the permeable cylinder and the overflow port of the overflow trough through pipes.

2. The water permeability test device according to claim 1, characterized in that: The height of the water outlet is lower than that of the water inlet.

3. The water permeability test device according to claim 1, characterized in that: The inflatable sealing layer is made of soft rubber, and is externally connected to an air-inflating valve, which extends to the outside of the metal sleeve. The sample to be tested is installed and placed in the inflatable sealing layer.

4. The water permeability test device according to claim 1, characterized in that: A water flow meter is arranged on the pipeline connecting the overflow water tank and the water collecting tank.

5. The water permeability test device according to claim 1, characterized in that: A water pump is arranged in the water collecting tank, and the water pump is connected to the water storage tank through a pipeline.

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