A water absorption detecting device

Abstract

The utility model provides a kind of water absorption rate detection device, including water storage tank, piston is slidably installed in thick cylinder, piston lower surface is installed with the float ball in water storage tank, thick cylinder upper end is installed with elbow, elbow is installed with transparent tube away from thick cylinder, transparent tube is vertically arranged, scale line is processed on the outer surface of transparent tube, transparent tube lower end is installed with tube cover, compression spring is arranged in the lower position in transparent tube, the lower end of compression spring is in contact with the inner bottom of tube cover, compression spring upper side is equipped with rubber column, and rubber column is slidably installed in transparent tube, the utility model has the beneficial effects as follows: the originally naked-eye indistinguishable small change is enlarged to clear measurable value, the precision of water absorption rate calculation is greatly improved, and the performance misjudgment caused by traditional tool measurement deviation is avoided.

Description

Technical Field

[0001] This utility model is a water absorption rate testing device, belonging to the field of XPS insulation board testing technology. Background Technology

[0002] In the performance testing system of XPS insulation boards, water absorption rate is one of the core indicators for evaluating its insulation stability and durability. The corresponding testing process requires accurately capturing the "change in water level in the storage tank before and after the board absorbs water" to calculate the water absorption rate. In specific operation, a certain amount of water must first be injected into the storage tank to ensure that the water level is stable and the initial liquid level is recorded. Then, the pre-treated (such as drying and weighing) XPS insulation boards are completely immersed in water and left to stand for a preset time to allow the boards to fully absorb water. After the water absorption process is completed, the boards are taken out and the final liquid level in the storage tank is recorded again. The amount of water absorbed by the boards is calculated by converting the difference between the two liquid levels, and thus the water absorption rate is obtained.

[0003] The material characteristics of XPS insulation boards present a significant challenge to this testing process. As an extruded polystyrene board, its internal structure is a closed honeycomb structure, making it difficult for moisture to penetrate and naturally possessing an extremely low water absorption rate. This characteristic means that after the board absorbs water, the amount of water reduction in the storage tank is negligible, resulting in extremely subtle changes in the liquid level—almost impossible to discern with the naked eye. Traditional ordinary liquid level measuring tools (such as rulers) cannot accurately capture these minute fluctuations, increasing the difficulty of the testing operation and potentially leading to deviations in the measurement data. This makes it difficult to accurately reflect the actual water absorption rate of the XPS insulation board, affecting the accurate assessment of the board's performance. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a water absorption rate detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water absorption rate detection device, comprising: A water storage tank, wherein a pressure member is installed on one side of the water storage tank for immersing the XPS insulation board in the water in the water storage tank; A coarse cylinder is positioned above a water storage tank, with its open end facing downwards. A piston is slidably installed inside the coarse cylinder, and a float ball located within the water storage tank is mounted on the lower surface of the piston. A curved tube is installed at the upper end of the coarse cylinder, and a transparent tube is installed at the end of the curved tube furthest from the coarse cylinder. The transparent tube is vertically arranged, and scale lines are machined on its outer surface. A cap is installed at the lower end of the transparent tube, and a compression spring is located at the lower part of the transparent tube. The lower end of the compression spring contacts the bottom of the inner cap, and a rubber column is located on the upper side of the compression spring, which is slidably installed inside the transparent tube.

[0006] Furthermore, the lower outer surface of the transparent tube is machined with external threads, the inner surface of the tube cap is machined with internal threads, the transparent tube and the tube cap are threadedly connected, and the lower surface of the tube cap is machined with vent holes.

[0007] Furthermore, the holding component includes a bracket, and the bracket is installed on one side of the water storage tank. The bracket has an L-shaped structure, and a guide hole is opened on the horizontal part of the bracket. A guide rod is inserted into the guide hole, and the guide rod is installed in the guide hole by a positioning screw. A pressure plate for holding the XPS insulation board is installed at the lower end of the guide rod.

[0008] Furthermore, a screw hole communicating with the guide hole is provided on one side of the bracket, and the positioning screw is threaded into the screw hole.

[0009] Furthermore, the upper surface of the pressure plate has multiple arc-shaped openings, which are arranged in a ring at equal intervals.

[0010] Furthermore, a horizontal plate is installed on the horizontal part of the bracket, and the lower end of the coarse cylinder is connected to the horizontal plate through a connecting frame. A vertical hole is opened on the upper surface of the horizontal plate, and a connecting rod is installed on the lower surface of the piston. The connecting rod passes through the vertical hole, and a connecting sleeve is fixedly connected to the lower end of the connecting rod. The connecting sleeve is fixedly connected to the float.

[0011] Furthermore, a drain trough is installed on the upper part of one side of the water storage tank. The bottom of the drain trough is an inclined surface that slopes towards the water storage tank. A support frame is installed in the upper part of the drain trough. A perforated plate is provided on the upper side of the support frame. A strip-shaped opening is opened on the side of the water storage tank facing the drain trough. The strip-shaped opening is flush with the bottom of the drain trough near the water storage tank.

[0012] Furthermore, two supports are installed at the bottom of the water storage tank, and a base plate is installed between the two supports.

[0013] The beneficial effects of this utility model are: The float in the water tank rises and falls synchronously with the water level, driving the piston in the coarse cylinder to slide up and down via a connecting rod. When the XPS insulation board absorbs water, causing a slight drop in the water level in the tank, the float moves the piston downwards. The volume change in the coarse cylinder is transmitted to the transparent tube through the bend. Because the cross-sectional area of ​​the coarse cylinder is much larger than that of the transparent tube, according to hydraulic principles, the minute volume change in the coarse cylinder is translated into a significant rise or fall in the liquid level within the transparent tube. Simultaneously, the rubber column inside the transparent tube slides with the liquid level under the support of a compression spring. Combined with the scale lines on the outer surface, the liquid level difference can be read intuitively, amplifying the originally imperceptible minute changes into clearly measurable values. This significantly improves the accuracy of water absorption rate calculation and avoids performance misjudgments caused by measurement deviations of traditional tools. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a water absorption rate detection device according to the present invention; Figure 2 This is a perspective view of a water absorption rate detection device according to the present invention. Figure 3 This is a front view of a water absorption rate detection device according to the present invention; Figure 4 for Figure 3 Sectional view of AA; Figure 5 This is an exploded structural diagram of a water absorption rate detection device according to the present invention; In the picture: 1. Water storage tank; 11. Support; 12. Base plate; 13. Strip-shaped opening; 2. Drainage groove; 21. Perforated board; 22. Support frame; 3. Coarse cylinder; 31. Connecting rod; 32. Float; 33. Connecting sleeve; 34. Bend; 35. Transparent tube; 36. Tube cap; 37. Horizontal plate; 38. Compression spring; 39. Rubber column; 310. Piston; 311. Vertical hole; 4. Bracket; 41. Guide rod; 42. Positioning screw; 43. Pressure plate; 44. Arc-shaped opening; 45. Guide hole. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a water absorption rate detection device, including a water storage tank 1, with two supports 11 installed at the bottom of the water storage tank 1, and a base plate 12 installed between the two supports 11. The base plate 12 and the supports 11 together support the water storage tank 1, improve the stability of the water storage tank 1 when it is placed, and avoid the water storage tank 1 tilting and water overflowing due to uneven ground.

[0017] See Figures 1-5A bracket 4 is installed on one side of the water storage tank 1. The bracket 4 has an L-shaped structure, and a guide hole 45 is opened on the horizontal part of the bracket 4. A guide rod 41 is inserted into the guide hole 45 and is installed in the guide hole 45 by a positioning screw 42. A screw hole communicating with the guide hole 45 is opened on one side of the bracket 4, and the positioning screw 42 is threaded into the screw hole. A pressure plate 43 for pressing the XPS insulation board is installed at the lower end of the guide rod 41. By opening multiple arc-shaped openings 44 arranged in a ring at equal intervals on the upper surface of the pressure plate 43, water can be prevented from remaining on the upper surface of the pressure plate 43, and water accumulation can be avoided from affecting the pressing stability. The guide rod 41 is inserted into the guide hole 45 of the L-shaped bracket 4, and the pressure plate 43 at the lower end can directly press the surface of the XPS insulation board. The position of the guide rod 41 is fixed by the positioning screw 42 to ensure that the board is always completely immersed in water during the testing process, avoiding insufficient water absorption due to the board floating, which would affect the authenticity of the test results.

[0018] See Figures 1-5 A horizontal plate 37 is installed on the horizontal part of the bracket 4. The lower end of the coarse cylinder 3 is connected to the horizontal plate 37 through a connecting frame. At this time, the coarse cylinder 3 is located on the upper side of the water storage tank 1. A vertical hole 311 is opened on the upper surface of the horizontal plate 37. A connecting rod 31 is installed on the lower surface of the piston 310. The connecting rod 31 passes through the vertical hole 311. A connecting sleeve 33 is fixedly connected to the lower end of the connecting rod 31. The connecting sleeve 33 is fixedly connected to the float 32 in the water storage tank 1. The connecting rod 31 and the connecting sleeve 33 work together to achieve a stable connection between the piston 310 and the float 32. A piston 310 is slidably installed inside the coarse cylinder 3. A bent tube 34 is installed at the upper end of the coarse cylinder 3. A transparent tube 35 is installed at the end of the bent tube 34 away from the coarse cylinder 3. The transparent tube 35 is arranged vertically and has scale lines machined on its outer surface. A tube cap 36 is installed at the lower end of the transparent tube 35. The outer surface of the lower end of the transparent tube 35 is machined with external threads, and the inner surface of the tube cap 36 is machined with internal threads. The transparent tube 35 and the tube cap 36 are threaded together. A vent hole is machined on the lower surface of the tube cap 36. The vent hole can balance the air pressure inside and outside the transparent tube 35 to ensure the smooth sliding of the rubber column 39. A compression spring 38 is provided at the lower part of the transparent tube 35. The lower end of the compression spring 38 is in contact with the bottom of the tube cap 36. A rubber column 39 is provided on the upper side of the compression spring 38 and is slidably installed inside the transparent tube 35.

[0019] The float 32 inside the water storage tank 1 rises and falls synchronously with the water level change, driving the piston 310 inside the coarse cylinder 3 to slide up and down via the connecting rod 31. When the XPS insulation board absorbs water, causing a slight drop in the water level of the water storage tank 1, the float 32 drives the piston 310 to move downwards. The change in volume inside the coarse cylinder 3 is transmitted to the transparent tube 35 through the bent tube 34. Since the cross-sectional area of ​​the coarse cylinder 3 is much larger than that of the transparent tube 35, according to the hydraulic principle, the small volume change inside the coarse cylinder 3 will be converted into a significant rise and fall in liquid level inside the transparent tube 35. At the same time, the rubber column 39 inside the transparent tube 35 slides with the liquid level change under the support of the compression spring 38. With the help of the scale lines on the outer surface of the transparent tube 35, the liquid level difference can be read intuitively, magnifying the originally imperceptible minute changes into clearly measurable values, greatly improving the accuracy of water absorption rate calculation and avoiding performance misjudgment caused by the measurement deviation of traditional tools.

[0020] See Figures 1-5 A drain trough 2 is installed on the upper part of one side of the water storage tank 1. The bottom of the drain trough 2 is an inclined surface sloping towards the water storage tank 1. A support frame 22 is installed in the upper part of the drain trough 2. A perforated plate 21 is provided on the upper side of the support frame 22. A strip-shaped opening 13 is opened on the side of the water storage tank 1 facing the drain trough 2. The strip-shaped opening 13 is flush with the bottom end of the drain trough 2 near the water storage tank 1. After water absorption is completed, the XPS insulation board can be transferred to the perforated plate 21 of the drain trough 2. Water droplets attached to the surface of the XPS insulation board permeate through the perforated plate 21 to the bottom of the drain trough 2, and then flow back into the water storage tank 1 through the inclined surface and the strip-shaped opening 13. This prevents water droplets from being carried out with the XPS insulation board and causing water loss, or from interfering with the final liquid level measurement when dripping back into the water storage tank 1. This design ensures that changes in moisture content within the water tank 1 are solely caused by water absorption by the XPS insulation board, eliminating interference from external factors and allowing the test data to better reflect the actual water absorption rate of the XPS insulation board.

[0021] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water absorption rate detection device, characterized in that, include: Water storage tank (1), one side of which is equipped with a pressure holding member for immersing XPS insulation board into the water in the water storage tank (1); A coarse cylinder (3) is set on the upper side of the water storage tank (1). The open end of the coarse cylinder (3) is arranged downward. A piston (310) is slidably installed inside the coarse cylinder (3). A float (32) in the water storage tank (1) is installed on the lower surface of the piston (310). A bent pipe (34) is installed at the upper end of the coarse cylinder (3). A transparent pipe (35) is installed at the end of the bent pipe (34) away from the coarse cylinder (3). The transparent pipe (35) is arranged vertically. The outer surface of the transparent pipe (35) is machined with scale lines. A pipe cap (36) is installed at the lower end of the transparent pipe (35). A compression spring (38) is provided at the lower part of the transparent pipe (35). The lower end of the compression spring (38) is in contact with the bottom of the pipe cap (36). A rubber column (39) is provided on the upper side of the compression spring (38). The rubber column (39) is slidably installed inside the transparent pipe (35).

2. The water absorption rate detection device according to claim 1, characterized in that: The lower outer surface of the transparent tube (35) is machined with external threads, the inner surface of the tube cap (36) is machined with internal threads, the transparent tube (35) and the tube cap (36) are threadedly connected, and the lower surface of the tube cap (36) is machined with vent holes.

3. The water absorption rate detection device according to claim 1, characterized in that: The holding component includes a bracket (4). The bracket (4) is installed on one side of the water storage tank (1). The bracket (4) has an L-shaped structure. A guide hole (45) is opened on the horizontal part of the bracket (4). A guide rod (41) is inserted into the guide hole (45). The guide rod (41) is installed in the guide hole (45) by a positioning screw (42). A pressure plate (43) for holding the XPS insulation board is installed at the lower end of the guide rod (41).

4. The water absorption rate detection device according to claim 3, characterized in that: The bracket (4) has a screw hole on one side that communicates with the guide hole (45), and the positioning screw (42) is threaded into the screw hole.

5. The water absorption rate detection device according to claim 3, characterized in that: The upper surface of the pressure plate (43) is provided with multiple arc-shaped openings (44), and the multiple arc-shaped openings (44) are arranged in a ring at equal intervals.

6. The water absorption rate detection device according to claim 3, characterized in that: A horizontal plate (37) is installed on the horizontal part of the bracket (4). The lower end of the coarse cylinder (3) is connected to the horizontal plate (37) through a connecting frame. A vertical hole (311) is opened on the upper surface of the horizontal plate (37). A connecting rod (31) is installed on the lower surface of the piston (310). The connecting rod (31) passes through the vertical hole (311). A connecting sleeve (33) is fixedly connected to the lower end of the connecting rod (31). The connecting sleeve (33) is fixedly connected to the float (32).

7. The water absorption rate detection device according to claim 1, characterized in that: A drain trough (2) is installed on the upper part of one side of the water storage tank (1). The bottom of the drain trough (2) is an inclined surface that slopes towards the water storage tank (1). A support frame (22) is installed in the upper part of the drain trough (2). A perforated plate (21) is provided on the upper side of the support frame (22). A strip opening (13) is opened on the side of the water storage tank (1) facing the drain trough (2). The strip opening (13) is flush with the bottom of the drain trough (2) near the end of the water storage tank (1).

8. The water absorption rate detection device according to claim 7, characterized in that: The bottom of the water storage tank (1) is equipped with two supports (11), and a base plate (12) is installed between the two supports (11).

Images