Automatic detection device for water absorption rate of rock wool

Abstract

The utility model relates to the technical field of building material detection equipment, and provides a rock wool water absorption rate automatic detection device which comprises a water tank used for storing water, a fixing assembly used for fixing a sample, a support arranged above the water tank and a driving assembly arranged on the support and used for driving the fixing assembly to ascend and descend. The fixing assembly comprises an upper clamping plate and a lower clamping plate which are respectively arranged on the upper surface and the lower surface of the sample, and a first driving part which is arranged on the upper clamping plate to drive the lower clamping plate to lift so as to clamp the sample; the driving assembly comprises a second driving piece arranged on the support and used for driving the upper clamping plate to ascend and descend and a third driving piece arranged on the second driving piece and used for driving the upper clamping plate to rotate along the central axis. The water absorption testing device has the beneficial effect that the water surface can be accurately controlled in the water absorption testing process.

Description

Technical Field

[0001] The present application relates to the technical field of building material testing equipment, and in particular to an automatic detection device for rock wool water absorption. Background Art

[0002] The thermal insulation performance of insulation materials primarily depends on the air in their internal voids. Because air has a lower thermal conductivity than solid and liquid materials, the more air there is, the better the insulation effect. However, when the air in these voids is replaced by water, the insulation effect is significantly reduced. Therefore, water absorption is a mandatory test item for incoming insulation materials. Water absorption testing is carried out in accordance with the relevant provisions of the current national mandatory standards GB50411-2019 "Construction Quality Acceptance Standard for Energy-Saving Buildings" and GB55015-2021 "General Specification for Energy-Saving Buildings and Renewable Energy Utilization."

[0003] The test process specified in the national standard "Test methods for mineral wool and its products" (GB / T5480-2017) is: the first step is to measure the volume and initial mass of the sample; the second step is to place the sample in water for 2 hours, and keep the water surface 25mm above the upper surface of the sample during the immersion period; the third step is to remove the sample from the water after soaking for 2 hours, place it on a drain rack to drain for 10 minutes, and finally measure the mass of the sample after immersion in water and calculate the water absorption rate.

[0004] However, during the test, the water level needs to be controlled at 25 mm above the sample surface. The sample is usually fixed in the water by pressing blocks. Due to the different water absorption of each material, as the material slowly absorbs water, the water surface will settle to varying degrees. Therefore, it is difficult to maintain the water height on the upper surface of the insulation material, which will affect the subsequent water absorption test, so further improvement is needed. Utility Model Content

[0005] In order to facilitate accurate control of the water surface during the water absorption test, the present application provides an automatic detection device for rock wool water absorption.

[0006] This application provides an automatic detection device for rock wool water absorption, which adopts the following technical solution:

[0007] A device for automatically detecting the water absorption rate of rock wool includes a water tank for storing water, a fixing assembly for fixing a sample, a bracket arranged above the water tank, and a driving assembly arranged on the bracket for driving the fixing assembly to rise and fall; the fixing assembly includes an upper clamping plate and a lower clamping plate respectively arranged on the upper and lower surfaces of the sample, and a first driving member arranged on the upper clamping plate to drive the lower clamping plate to rise and fall to clamp the sample; the driving assembly includes a second driving member arranged on the bracket to drive the upper clamping plate to rise and fall, and a third driving member arranged on the second driving member to drive the upper clamping plate to rotate along the central axis.

[0008] By adopting the above technical solution, the second driving member is first started to drive the upper clamping plate to rise, that is, to drive the fixed assembly to rise, to move away from the water tank. After moving to a certain position, the first driving member is started to drive the lower clamping plate to descend to provide a placement space for the sample. After the sample is placed on the lower clamping plate, the first driving member is driven again to drive the lower clamping plate to rise to clamp the sample. After clamping is completed, the second driving member is started to drive the fixed assembly into the water tank for immersion. As the sample is soaked, the water surface may settle. At this time, the second driving member is activated to change the height of the fixing assembly to limit the movement of the sample so that the water surface is maintained at a height of 25 mm above the upper surface of the sample for soaking. After soaking for 2 hours, the second driving member is activated to drive the fixing assembly to rise away from the water surface, and then the third driving member is activated to drive the upper clamping plate to rotate, that is, to drive the fixing assembly to be tilted so that the sample can be drained. After draining for 10 minutes, the third driving member is activated to set the upper clamping plate horizontally, and then the first driving member is activated to release the clamping of the sample, so that the sample can be taken out for collection and calculation of corresponding data.

[0009] Among them, the immersion height of the sample can be limited by the fixed component to improve the accuracy of water surface control during the water absorption test, so as to reduce the impact on the accuracy of subsequent work. As the third driving member is driven, the sample can be drained above the water tank, reducing the need to take it out for draining, and the operation is relatively simplified.

[0010] Preferably, the lower surface of the upper clamping plate is connected to a mesh plate, and the upper surface of the lower clamping plate is penetrated by a plurality of through holes.

[0011] By adopting the above technical solution, the lower surface of the upper splint is connected with a mesh plate to avoid the upper splint directly fitting with the sample surface and affecting the immersion of the sample, and a number of through holes are opened through the upper surface of the lower splint so that the water in the water tank can enter the lower splint from the through holes, and the several through holes can be arranged in a mesh shape to avoid the high degree of fit between the lower splint and the sample surface and affect the immersion of the sample, that is, reduce the impact on the detection accuracy of the sample water absorption test.

[0012] Preferably, a drain net is provided on the upper surface of the lower splint, and the height of the drain net is smaller than the height of the sample.

[0013] By adopting the above technical solution and providing a drainage net, the possibility of the sample slipping and detaching when the sample is tilted and drained under the action of the third driving member is reduced.

[0014] Preferably, the sample is arranged in a cube shape, and the two diagonals of the sample are respectively parallel to the length direction and the width direction of the upper clamping plate, and the third driving member drives the upper clamping plate to rotate along the central axis in the length direction.

[0015] By adopting the above technical solution, the two diagonals of the sample are parallel to the length and width directions of the upper splint respectively, so that the sample can be drained when it is set at an angle to comply with the drainage method in the standard, thereby reducing the manual operations required for adjustment and improving the detection efficiency.

[0016] Preferably, the drain net is arranged in a V-shape and abuts against two adjacent side walls of the sample respectively.

[0017] By adopting the above technical solution, the drain net is set in a V shape to correspond to the placement of the samples, so as to reduce the possibility of the samples slipping and detaching during the inclined drainage process.

[0018] Preferably, the drain net is provided with a limiter for limiting the sliding of the sample, the limiter includes a limiter rod, and the drain net is provided with threaded holes for the limiter rod to be threaded through, and the threaded holes are arranged at intervals along the length direction of the drain net.

[0019] By adopting the above technical solution, since there will be samples of different sizes when conducting the test, the length of the drain net set can be greater than the length of the sample. According to the different lengths of the samples, the limit rod is threaded through the threaded hole at the corresponding position to limit the movement of the sample, thereby reducing the cost of equipping drain nets of different specifications.

[0020] Preferably, the fixing assembly also includes a spring arranged between the upper clamping plate and the lower clamping plate, two springs are provided and are arranged diagonally, two first driving members are provided and are arranged diagonally, and the two springs and the two first driving members are respectively provided at the four top corners of the upper clamping plate and the lower clamping plate.

[0021] By adopting the above technical solution, the degree of clamping of the sample by the lower clamping plate can be controlled, and by providing a spring, the number of first driving members provided can be reduced, thereby relatively reducing costs.

[0022] Preferably, the second driving member is a second cylinder, the third driving member is a third cylinder, a mounting plate for connecting the piston rod of the second cylinder is rotatably connected above the fixed assembly, the third cylinder is fixedly connected to the mounting plate, the piston rod of the third cylinder is passed through the mounting plate, the piston rod of the third cylinder is rotatably connected to a slider, and a sliding seat for sliding connection of the slider is provided on the upper surface of the upper clamping plate.

[0023] By adopting the above technical solution, when the sample needs to be drained, the second cylinder is started to drive the fixed assembly to rise so as to be located above the water tank, and the third cylinder is started. As the piston rod of the third cylinder is extended, the slider is driven to slide along the sliding seat to move away from the central axis of the upper splint, so that the upper splint rotates along the central axis to be inclined, so that the sample can be drained.

[0024] Preferably, the water tank includes an inner water tank and an outer water tank from the inside to the outside. The inner water tank is used to soak samples. A drainage groove is penetrated through the upper side wall of the inner water tank. A float valve is provided at the bottom of the inner water tank. The water inlet end of the float valve is fixedly penetrated through the bottom inner wall of the inner water tank.

[0025] By adopting the above technical solution, the water level in the inner water tank rises as the sample descends, and automatically flows out to the outer water tank for storage when the water surface passes through the drain groove, so that the water surface maintains the required height. At this time, the float valve and the drain groove are in the same plane; as the sample is slowly soaked, when the distance between the water level and the upper surface of the sample is insufficient, the float valve will drop with the water level, driving the water inlet end of the float valve to open and store water, and inject the water stored in the outer water tank into the inner water tank, so that the water surface is maintained at 25mm above the upper surface of the sample, reducing the difficulty of starting the second drive component to change the height of the fixed component, so that the water surface can be accurately controlled during the water absorption test, thereby improving the accuracy of subsequent test results.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. The immersion height of the sample can be limited by the fixing component to improve the accuracy of water surface control during the water absorption test, thereby reducing the impact on the accuracy of subsequent work. As the third driving member is driven, the sample can be drained above the water tank, reducing the need to take it out for draining, and the operation is relatively simplified.

[0028] 2. The lower surface of the upper plywood is connected with a mesh plate, and a plurality of through holes are opened through the upper surface of the lower plywood so that the water in the water tank can enter the lower plywood from the through holes. The plurality of through holes can be arranged in a mesh shape to avoid the high degree of adhesion between the plywood and the sample surface affecting the immersion of the sample, that is, reducing the impact on the detection accuracy of the sample water absorption test. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0030] Figure 2 is a front view structural diagram of Example 1 of the present application;

[0031] Figure 3This is a schematic structural diagram of the lower splint in Example 1 of the present application;

[0032] Figure 4 yes Figure 1 A partial enlarged schematic diagram of part A;

[0033] Figure 5 It is a structural diagram of the limiting component in Example 2 of the present application.

[0034] Explanation of the accompanying drawings: 1. Water tank; 11. Inner water tank; 111. Drain trough; 112. Float valve; 12. Outer water tank; 2. Fixing assembly; 21. Upper clamping plate; 211. Mesh plate; 212. Sliding seat; 22. Lower clamping plate; 221. Through hole; 23. First driving member; 24. Spring; 3. Bracket; 31. Support rod; 32. Support plate; 4. Driving assembly; 41. Second driving member; 42. Third driving member; 421. Slider; 5. Sample; 6. Mounting plate; 61. Guide rod; 7. Ear plate; 71. Rotating rod; 8. Drain net; 81. Limiting member; 82. Threaded hole. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 , further details of this application are given.

[0036] The embodiment of the present application discloses an automatic detection device for the water absorption rate of rock wool.

[0037] Example 1:

[0038] An automatic detection device for water absorption of rock wool, referring to Figure 1 , including a water tank 1 for storing water, a fixing component 2 for fixing a sample 5, a bracket 3 arranged above the water tank 1, and a driving component 4 arranged on the bracket 3 for driving the fixing component 2 to rise and fall.

[0039] Reference Figure 1 、 Figure 2 , wherein the water tank 1 includes an inner water tank 11 and an outer water tank 12 from the inside to the outside. The inner water tank 11 is used to accommodate the sample 5 and the plywood immersion operation. A drainage groove 111 is provided on the side of the inner water tank 11 at a distance of 25 mm from the upper surface of the sample 5 to drain excess water. A float valve 112 is provided at the bottom of the inner water tank 11. The water inlet end of the float valve 112 is fixedly penetrated through the bottom inner wall of the inner water tank 11 to store water in the inner water tank 1 when the water level is insufficient, so as to control the water level. The outer water tank 12 is fixedly connected to the outside of the inner water tank 11 to store water discharged from the inner water tank 11 through the drainage groove 111 and to provide water when the water level in the inner water tank 11 drops.

[0040] As sample 5 descends, the water level in inner water tank 11 rises. When the water passes through drain trough 111, it automatically flows out to outer water tank 1 for storage, maintaining the water level 25 mm above sample 5. At this point, float valve 112 and drain trough 111 are flush with each other. When the water level falls below 25 mm from the top of sample 5, float valve 112 descends with the water level, driving the lower water inlet to open and store water, allowing the water stored in outer water tank 12 to flow into inner water tank 11, maintaining the water level 25 mm above sample 5.

[0041] Reference Figure 2 、 Figure 3 , wherein the fixing assembly 2 includes an upper clamping plate 21 and a lower clamping plate 22 respectively arranged on the upper and lower surfaces of the sample 5, a first driving member 23 arranged on the upper clamping plate 21 to drive the lower clamping plate 22 to rise and fall to clamp the sample 5, and a spring 24 fixedly connected between the upper clamping plate 21 and the lower clamping plate 22. Among them, the lower surface of the upper clamping plate 21 is fixedly connected to a mesh plate 211, and the upper surface of the lower clamping plate 22 is penetrated by a plurality of through holes 221. In this embodiment, there are two first driving members 23 and they are diagonally arranged, and there are two springs 24 and they are diagonally arranged. The two springs 24 and the two first driving members 23 are respectively arranged at the four top corners of the upper clamping plate 21 and the lower clamping plate 22. In this embodiment, the first driving member 23 is a first cylinder, which is fixedly connected to the upper surface of the upper clamping plate 21, and the piston rod of the first cylinder is passed through the upper clamping plate 21 and is fixedly connected to the lower clamping plate 22.

[0042] The bracket 3 specifically includes four support rods 31 respectively fixedly connected to the upper surface of the outer water tank 12 at four corners and a support plate 32 fixedly connected to the upper end surfaces of the four support rods 31.

[0043] Among them, the driving component 4 specifically includes a second driving member 41 and a third driving member 42. In this embodiment, the second driving member 41 is used to drive the upper clamping plate 21 to rise and fall, that is, to drive the fixing component 2 to rise and fall. The second driving member 41 is a second cylinder. The cylinder body of the second cylinder is fixedly connected to the lower surface of the support plate 32. A mounting plate 6 is provided above the upper clamping plate 21. The length direction of the mounting plate 6 is parallel to the length direction of the upper clamping plate 21. The piston rod of the second cylinder is fixedly connected to the upper surface of the mounting plate 6, and the upper surface of the mounting plate 6 is fixedly connected to a guide rod 61. Two guide rods 61 are provided and are spaced apart along the length direction of the mounting plate 6. The upper end of the guide rod 61 slides through the support plate 32.

[0044] In this embodiment, ear plates 7 are protruding and fixed on the lower surface of the mounting plate 6 and the upper surface of the upper splint 21. The two ear plates 7 abut against each other and are rotatably penetrated by a rotating rod 71 to realize the rotation direction between the mounting plate 6 and the upper splint 21. Two ear plates 7 are provided and are spaced apart along the length direction of the mounting plate 6. It should be noted that the rotating rod 71 rotates along the central axis of the length direction of the upper splint 21.

[0045] Reference Figure 1 、 Figure 4 The third driving member 42 is used to drive the upper clamping plate 21 to rotate along the central axis, so that the sample 5 located between the upper clamping plate 21 and the lower clamping plate 22 is tilted for draining. In this embodiment, the third driving member 42 is a third cylinder. The cylinder body of the third cylinder is fixedly connected to the upper surface of the mounting plate 6 and is located near one of the long sides of the mounting plate 6. The piston rod of the third cylinder passes through the mounting plate 6 and is rotatably connected to the slider 421. The upper surface of the upper clamping plate 21 is provided with a sliding seat 212 for sliding connection of the slider 421. The length direction of the sliding seat 212 is parallel to the width direction of the upper clamping plate 21.

[0046] It should be noted that pressure fine-tuning valves (not shown) can be provided on the first drive member 23, the second drive member 41, and the third drive member 42 to respectively control the lifting speed of the lower clamping plate 22 and the fixing assembly 2, and the rotation speed of the upper clamping plate 21. In this embodiment, the third drive member 42 is used to control the sample 5 and the fixing assembly 2 to tilt at 45 degrees for drainage.

[0047] Back to Figure 3 In this embodiment, the sample 5 is arranged in a cube shape, with the two diagonals of the sample 5 parallel to the length and width of the upper clamping plate 21. Furthermore, to reduce the possibility of the sample 5 slipping and detaching during the inclined drainage process, a drain net 8 is provided on the upper surface of the lower clamping plate 22 in this embodiment. The drain net 8 is arranged in a V-shape and abuts against the adjacent two side walls of the sample 5. The height of the drain net 8 is less than that of the sample 5. Generally, the thickness of the sample 5 to be tested is 30 mm or greater. In this case, the height of the drain net 8 should not exceed 28 mm. The drain net 8 is in the shape of a railing and is mainly used to fix the sample 5 so that the sample 5 can be drained at a 45-degree angle.

[0048] It should be noted that a controller (not shown in the figure) is fixedly connected to the side of the box, and the controller is electrically connected to the float valve 112, the first drive member 23, the second drive member 41 and the third drive member 42, respectively, for controlling the test process of the entire device, including soaking, draining, timing, water storage and other processes.

[0049] The implementation principle of an automatic detection device for water absorption of rock wool in an embodiment of the present application is as follows: through the controller, the second cylinder is first started to drive the upper clamping plate 21 to rise, that is, to drive the fixing component 2 to rise, to move away from the water tank 1. After moving to a certain position, the first cylinder is started to drive the lower clamping plate 22 to descend to provide a placement space for the sample 5. After the sample 5 is placed on the lower clamping plate 22, the first cylinder is driven again to drive the lower clamping plate 22 to rise to clamp the sample 5. After clamping is completed, the second cylinder is started to allow the fixing component 2 to enter the water tank 1 for immersion. Due to the clamping of the upper and lower clamping plates 22, the movement of the sample 5 is restricted so that the water surface is maintained at a height of 25 mm above the upper surface of the sample for immersion. After soaking for 2 hours, the second cylinder is started to drive the fixing component 2 to rise away from the water surface, and then the third cylinder is started to drive the upper clamping plate 21 to rotate, that is, to drive the fixing component 2 to be set at an angle so that the sample 5 can drain. After draining for 10 minutes, the third driving member 42 is started to make the upper clamping plate 21 be set horizontally, and then the first cylinder is started to release the clamping of the sample 5, so that the corresponding data can be collected and calculated after the sample 5 is taken out.

[0050] Example 2:

[0051] Reference Figure 5 The difference from Example 1 is that the lengths of both ends of the drain net 8 are longer than the length of the sample 5, and the drain net 8 is provided with a limit member 81 for limiting the sliding of the sample 5. In this embodiment, the limit member 81 is a limit rod, and a threaded hole 82 for the limit rod to be threaded through is opened on the drain net 8, and the threaded holes 82 are arranged at intervals along the length direction of the drain net 8.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic detection device for rock wool water absorption, characterized by: The invention comprises a water tank (1) for storing water, a fixing assembly (2) for fixing a sample (5), a bracket (3) arranged above the water tank (1), and a driving assembly (4) arranged on the bracket (3) for driving the fixing assembly (2) to move up and down; the fixing assembly (2) comprises an upper clamping plate (21) and a lower clamping plate (22) respectively arranged on the upper and lower surfaces of the sample (5), and a first driving member (23) arranged on the upper clamping plate (21) to drive the lower clamping plate (22) to move up and down so as to clamp the sample (5); the driving assembly (4) comprises a second driving member (41) arranged on the bracket (3) to drive the upper clamping plate (21) to move up and down, and a third driving member (42) arranged on the second driving member (41) to drive the upper clamping plate (21) to rotate along the central axis.

2. The automatic detection device for rock wool water absorption according to claim 1, characterized in that: The lower surface of the upper clamping plate (21) is connected to a mesh plate (211), and the upper surface of the lower clamping plate (22) is penetrated by a plurality of through holes (221).

3. The automatic detection device for rock wool water absorption according to claim 1, characterized in that: A drain net (8) is provided on the upper surface of the lower clamping plate (22), and the height of the drain net (8) is smaller than the height of the sample (5).

4. The automatic detection device for rock wool water absorption according to claim 3, characterized in that: The sample (5) is arranged in a cube shape, and the two diagonals of the sample (5) are respectively parallel to the length direction and the width direction of the upper clamping plate (21), and the third driving member (42) drives the upper clamping plate (21) to rotate along the central axis in the length direction.

5. The automatic detection device for rock wool water absorption according to claim 4, characterized in that: The drain net (8) is arranged in a V-shape and abuts against two adjacent side walls of the sample (5).

6. The automatic detection device for rock wool water absorption according to claim 5, characterized in that: The drain net (8) is provided with a limiting member (81) for limiting the sliding of the sample (5), and the limiting member (81) includes a limiting rod. The drain net (8) is provided with threaded holes (82) for the limiting rod to be threaded through, and the threaded holes (82) are arranged at intervals along the length direction of the drain net (8).

7. The automatic detection device for rock wool water absorption according to claim 5, characterized in that: The fixing assembly (2) further includes a spring (24) disposed between the upper clamping plate (21) and the lower clamping plate (22), wherein two springs (24) are provided and are diagonally disposed, and two first driving members (23) are provided and are diagonally disposed, and the two springs (24) and the two first driving members (23) are respectively disposed at four top corners of the upper clamping plate (21) and the lower clamping plate (22).

8. The automatic detection device for rock wool water absorption according to claim 1, characterized in that: The second driving member (41) is a second cylinder, the third driving member (42) is a third cylinder, the upper portion of the fixed assembly (2) is rotatably connected to a mounting plate (6) for connecting a piston rod of the second cylinder, the third cylinder is fixedly connected to the mounting plate (6), the piston rod of the third cylinder is passed through the mounting plate (6), the piston rod of the third cylinder is rotatably connected to a slider (421), and the upper surface of the upper clamping plate (21) is provided with a sliding seat (212) for sliding connection of the slider (421).

9. The rock wool water absorption automatic detection device according to claim 1, characterized in that: The water tank (1) includes an inner water tank (11) and an outer water tank (12) from the inside out. The inner water tank (11) is used to soak the sample (5). A drainage groove (111) is provided through the upper side wall of the inner water tank (11). A float valve (112) is provided at the bottom of the inner water tank (11). The water inlet end of the float valve (112) is fixedly penetrated through the bottom inner wall of the inner water tank (11).

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