Device for detecting water absorption rate of putty for building external wall

Abstract

The utility model relates to the technical field of building construction detection, in particular to a putty water absorption detection device for a building outer wall, which comprises a base, a water tank, a hoisting assembly and a measurement and control assembly, the water tank is of a box body structure with an upper opening, and the bottom of the water tank is fixed above the base; the hoisting assembly is positioned outside the water tank and is used for hoisting a test block; the measurement and control assembly comprises a water level measurement and control instrument and a range finder, a probe of the water level measurement and control instrument is fixed to the bottom of the inner side of the water tank, a water inlet pipe of the water level measurement and control instrument is fixed to the side wall of the water tank, the range finder is installed at the bottom of the base, and the detection end of the range finder faces the bottom of the water tank; during testing, the water tank is filled with distilled water, and the test block is suspended in the distilled water by the hoisting assembly and is positioned above the range finder. According to the utility model, the lifting assembly, the water level measurement and control instrument and the range finder are arranged to carry out multiple restrictions on the vertical position of the test block, so as to control the position of the lower bottom surface of the test block, thereby improving the precision and effectiveness of the test.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction detection, in particular to a putty water absorption rate detection device for building exterior walls. Background Art

[0002] Walls are important engineering structures that divide the indoor and outdoor spaces of buildings. Common wall materials currently used include cement blocks, sintered clay bricks and panels. Putty for building exterior walls is a base surface treatment material applied to the exterior walls of buildings before painting for the purpose of leveling and crack resistance. The water absorption rate of putty is one of the important performance indicators of putty products, which is related to the decoration quality and use effect.

[0003] In the prior art, the method for determining the water absorption rate of putty is: fill the mortar block with putty, and after curing for 7 days, evenly coat the four sides and the bottom of the test block with a rosin wax mixture, and place it in a standard environment for one day. During the test, the dry mass of the test block is first determined by placing the test block with the putty side facing down on two tripod brackets in the sink, adding distilled water, and the immersion depth of the test block is required to be 15mm. After 10 minutes, take out the test block, wipe off the attached water, and measure the wet mass of the test block. In actual operation, there are the following problems: the middle position of the test block needs to be placed on the triangular bracket during immersion, and the bracket and the putty are linear contact force surfaces. The putty is subjected to pressure, which is easy to cause damage to the contact surface and the surrounding area, thereby changing the quality of the putty and affecting the test results; secondly, when injecting water, the prior art relies on the operator's naked eye to control the water level. In addition, after the immersion is completed, the prior art mostly relies on manual labor to fish out the test block, which will cause the test block to tilt and the water level to change dramatically during the process. The above problems are easy to cause experimental deviations and reduce test efficiency. In summary, a device for detecting water absorption of putty for building exterior walls is needed. Utility Model Content

[0004] Aiming at the problem of poor test accuracy of putty water absorption rate in the prior art, the utility model provides a putty water absorption rate detection device for building exterior walls.

[0005] The utility model is realized by the following technical solutions:

[0006] A device for detecting water absorption rate of putty for building exterior walls comprises a base, a water tank, a lifting assembly and a measuring and controlling assembly. The water tank is a box structure with an upper opening, and the bottom of the water tank is fixed above the base; the lifting assembly is located outside the water tank and is used to lift a test block; the measuring and controlling assembly comprises a water level measuring and controlling device and a distance meter, the probe of the water level measuring and controlling device is fixed to the inner bottom of the water tank, the water inlet pipe of the water level measuring and controlling device is fixed to the side wall of the water tank, the distance meter is installed at the bottom of the base, and the detection end of the distance meter faces the bottom of the water tank; during the test, the water tank is filled with distilled water, the test block is suspended in the distilled water by the lifting assembly, and the test block is located above the distance meter.

[0007] Preferably, the lifting assembly includes a support frame, a wire wheel, a fixed pulley, a twisted wire, a lifting ring and a suspension wire, the support frame includes a vertical rod and a horizontal rod arranged in an L shape, the bottom of the vertical rod is fixed to the base, and the top of the vertical rod is fixed to one end of the horizontal rod; the wire wheel is rotatably installed on the end of the horizontal rod close to the vertical rod, the fixed pulley is arranged at the end of the vertical rod away from the horizontal rod, one end of the suspension wire is fixed on the wire wheel, and the other end passes around the fixed pulley and is connected to the lifting ring; a plurality of suspension wires are provided, and one end of the plurality of suspension wires is connected to the lifting ring, and the other end is used to connect to the test block.

[0008] Preferably, it also includes a test block groove, which is a groove body with two upper and lower openings surrounded by multiple L-shaped plate structures in cross section, the end of the hanging wire away from the hanging ring is connected to the side wall of the test block groove, and the test block is placed in the test block groove.

[0009] Preferably, a lifting lug is provided on the outer side of the test block groove, and the hanging wire is connected to the lifting lug.

[0010] Preferably, one end of the horizontal rod away from the vertical rod coincides with the center of the water tank.

[0011] Preferably, the water inlet pipe of the water level measuring and controlling device is fixed to the upper edge of the water tank, and the water inlet pipe port is flush with the inner edge of the water tank.

[0012] Preferably, a detection hole is opened at the bottom of the base, and the rangefinder is installed in the detection hole.

[0013] Preferably, during the test, the distance between the bottom of the test block and the bottom wall of the water tank is 40 mm.

[0014] Preferably, a plurality of adjusting bolts are provided at the bottom of the base.

[0015] Preferably, a level bubble is installed on the base.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model is a device for detecting water absorption rate of putty for building exterior walls. The vertical position of the test block is fixed by setting a lifting component. At the same time, a water level measuring and controlling device is used to effectively measure the water level height. When the water level changes, water can be replenished in time, thereby ensuring the stability of the pressure surface height. The rangefinder can measure the distance from the bottom surface of the test block to the bottom of the water tank. Combined with the lifting component, the position of the bottom surface of the test block can be controlled. In addition, with the cooperation of the rangefinder, the immersion height of the test block can be effectively controlled, thereby improving the accuracy and effectiveness of the test. The device has a simple and clear structure, realizes the effective detection of the water absorption rate of putty for building exterior walls, avoids subjective and environmental interference, avoids damage to the sample, and significantly improves the accuracy and efficiency of the test.

[0018] Furthermore, the test block can be lifted to the surface of the water by means of pulleys and capstans, thus avoiding tilting and obvious disturbance of the liquid surface.

[0019] Furthermore, by using the test block groove and the ring bracket, the vertical position of the test block is fixed during immersion, and the putty surface is fully in contact with water, thereby avoiding damage to the putty surface.

[0020] Furthermore, by arranging the adjustment bolts and the level bubble, the height and straightness of the base can be fine-tuned to ensure the levelness of the water tank device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a device for detecting water absorption rate of putty for building exterior walls according to the utility model;

[0022] Figure 2 The utility model is a schematic diagram of assembling a hanging ring and a test block groove in a device for detecting water absorption rate of putty for building exterior walls.

[0023] In the figure, 1. base; 2. water tank; 3. water level measuring and controlling device; 4. water inlet pipe; 5. fixed pulley; 6. horizontal bar; 7. reel; 8. vertical bar; 9. lifting ring; 10. hanging wire; 11. lifting ear; 12. test block slot; 13. test block; 14. distilled water; 15. spirit level; 16. adjusting bolt; 17. sensor; 18. twisted wire; 19. display instrument; 3-1. probe. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0025] The utility model discloses a device for detecting water absorption rate of putty for building exterior walls, referring to Figure 1 , including a base 1, a water tank 2, a lifting assembly and a measurement and control assembly. The water tank 2 is a box structure with an upper opening, and the bottom of the water tank 2 is fixed above the base 1. In this embodiment, the base 1 is made of 20mm thick inorganic glass. Adjustment bolts 16 are installed at the four corners of the base 1. The water tank 2 is fixed to the base 1 by epoxy resin glue. A level bubble 15 is installed on the base 1. In this embodiment, a level bubble 15 is installed at the upper part of the base 1 adjacent to the water tank 2. Combined with the corner adjustment bolts 16, the level of the test device can be ensured.

[0026] The lifting assembly is located outside the water tank 2 and is used to lift the test block 13. The lifting assembly includes a support frame, a wire wheel 7, a fixed pulley 5, a twisted wire 18, a lifting ring 9, a hanging wire 10 and a test block tank 12. The support frame includes a vertical rod 8 and a horizontal rod 6 arranged in an L shape. The bottom of the vertical rod 8 is fixed to the base 1, and the top of the vertical rod 8 is fixed to one end of the horizontal rod 6 by a bolt structure; the wire wheel 7 is rotatably mounted on one end of the horizontal rod 6 close to the vertical rod 8, the fixed pulley 5 is arranged at one end of the vertical rod 8 away from the horizontal rod 6, one end of the hanging wire 10 is fixed on the wire wheel 7, and the other end is connected to the lifting ring 9 by passing around the fixed pulley 5; a plurality of hanging wires 10 are provided, and one end of the plurality of hanging wires 10 is connected to the lifting ring 9, and the other end is used to connect to the test block 13. The test block groove 12 is a groove body with two upper and lower openings surrounded by multiple L-shaped cross-section plate structures. The end of the hanging wire 10 away from the hanging ring 9 is connected to the ear 11 on the side wall of the test block groove 12, and the test block 13 is placed in the test block groove 12.

[0027] In this embodiment, the crossbar 6, the vertical bar 8 and the hanging ring 9 are made of stainless steel, the longitudinal bar is connected to the crossbar 6 by bolts, the end of the crossbar 6 is aligned with the center of the water tank 2 (that is, the end of the crossbar 6 away from the vertical bar 8 coincides with the center of the water tank 2), and the hanging ring 9 is welded with mutually perpendicular equal semicircular arcs, and the diameter of the semicircular arc is about 1.5-2cm. The end of the vertical hanging wire 10 is connected to the cross point of the hanging ring 9, and the hanging ring 9 is vertically crossed and sleeved with two substantially equal lengths of the hanging wires 10 with the ends being unsheathed, and the length of the hanging wire 10 is about 150mm-200mm.

[0028] The test block groove 12 is made of four L-shaped inorganic glass strips bonded with strong AB glue, with a thickness of 5mm, an outer height of 30mm, a bottom width and a length of 100mm, a square ring at the bottom, and a vertical distance of 8mm between the edge of the ring and the inner side. The centers of the four sides of the test block groove 12 are bonded with tangible ears 11 with strong AB glue. The front and rear and left and right ears 11 of the test block groove 12 are respectively connected to two cross hanging wires 10. The test block 13 is a mortar block of 80mm*80mm*20mm, covered with 2mm building exterior wall putty.

[0029] The measurement and control assembly includes a water level measurement and control device 3 and a rangefinder. The probe 3-1 of the water level measurement and control device 3 is fixed to the inner bottom of the water tank 2. The water inlet pipe 4 of the water level measurement and control device 3 is fixed to the side wall of the water tank 2. Specifically, the water inlet pipe 4 of the water level measurement and control device 3 is fixed to the upper edge of the water tank 2, and the port of the water inlet pipe 4 is flush with the inner edge of the water tank 2 to guide the water flow to flow slowly down along the inner wall of the water tank 2 to avoid scouring the test block 13. In this embodiment, the water level measurement and control device 3 is a QDY30A-N immersion liquid level transmitter controller.

[0030] A rangefinder is installed at the bottom of the base 1, and the detection end of the rangefinder faces the bottom of the water tank 2; a detection hole is provided at the bottom of the base 1, and the rangefinder is installed in the detection hole. In this embodiment, the rangefinder is a US-100 ultrasonic ranging module, which is composed of a sensor 17 and a display. A 45mm*20mm rectangular detection hole is provided at the junction of the base 1 and the middle of the water tank 2. The sensor 17 of the rangefinder is fixedly connected to the detection hole by epoxy resin glue and is close to the bottom surface of the water tank 2. During the test, the test block 13 needs to be suspended at a height of 40mm from the bottom surface of the water tank 2. During the test, the inside of the water tank 2 is filled with distilled water 14, and the test block 13 is suspended in the distilled water 14 by a lifting assembly, and the test block 13 is located above the rangefinder.

[0031] The implementation principle of the utility model of a device for detecting water absorption rate of putty for building exterior walls is:

[0032] Step 1: Apply the putty sample mixed according to the specification on the 80mm*80mm*20mm mortar block, and control the wet film thickness to 2mm, so that the surface is flat and free of bubbles. After curing for 7 days under standard environment, dip the 4 sides, bottom and front edge of the test block with a 1:1 mixture of rosin and paraffin, and place it in standard environment for 1 day;

[0033] Step 2, place the experimental device, adjust the adjustment bolt 16, and observe whether it is level through the level bubble 15;

[0034] Step 3: When using for the first time, the liquid level measuring and controlling device 3 needs to be turned on, and the relevant test quantity at the water level of 55 mm is set as the standard value;

[0035] Step 4: When using for the first time, the distance meter 17 and the distance display 19 need to be zeroed. Open the distance meter 17 and place a piece of paper close to the bottom of the water tank 2. At this time, the distance measurement is calibrated to 0;

[0036] Step 5, use gauze to remove the floating dust on the surface of the putty, and measure the mass w1 of the test block 13;

[0037] Step 6, place the test block 13 face down into the test block slot 12 (the inner width of the test block slot is 90 mm, which is larger than the test block size) and place it in the water tank 2;

[0038] Step 7, release the twisting wheel 7, fasten the ends of the cross-shaped suspension wires 10 to the test block slot lugs 11, note that the same suspension wire 10 needs to be connected to the lugs 11 on two parallel surfaces, rotate the twisting wheel 7, and slowly lift the test block slot 12 and the test block 13;

[0039] Step 8, check the distance display 19, at this time the measured distance is the distance from the surface of the putty layer at the bottom of the test block 13 to the bottom of the water tank 2, when it reaches 40mm, lock the stranding wheel 7;

[0040] Step 9, turn on the liquid level measuring and controlling device 3, and slowly inject distilled water into the water tank through the water pipe 4 according to the set water level depth of 55 mm until the standard water level is reached, at which time the infiltration depth of the test block 13 can be ensured to be 15 mm;

[0041] Step 10, after 10 minutes of timing, rotate the stranding wheel 7, lift the test block slot 12 and the test block 13 out of the water, remove the test block slot 12, hold the bottom of the test block 13, turn over the test block slot 12, and take out the test block 13;

[0042] Step 11, press the surface and surrounding of the test block 13 with filter paper to wipe off the attached water, and measure the mass w2 of the test block 13 at this time;

[0043] Step 12, water absorption = mass after immersion for 10 minutes w1-dry mass w0. Remove the maximum and minimum values ​​of the same group of results, take the arithmetic mean of the remaining data, and require that the maximum relative deviation of the test data from the average value should not be greater than 10%, otherwise the experimental data will be invalid.

[0044] The utility model performs multiple restrictions on the vertical position of the test block by arranging a lifting assembly, a water level measuring and controlling device, and a distance meter, thereby controlling the position of the bottom surface of the test block, thereby improving the accuracy and effectiveness of the test.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and replacements, and these modifications and replacements are also within the scope of protection covered by the claims.

Claims

1. A device for detecting water absorption of putty for building exterior walls, characterized in that: The invention comprises a base (1), a water tank (2), a lifting assembly and a measurement and control assembly, wherein the water tank (2) is a box structure with an upper opening, and the bottom of the water tank (2) is fixed above the base (1); the lifting assembly is located outside the water tank (2) and is used to lift a test block (13); the measurement and control assembly comprises a water level measurement and control device (3) and a distance meter, wherein a probe (3-1) of the water level measurement and control device (3) is fixed to the inner bottom of the water tank (2), and a water inlet pipe (4) of the water level measurement and control device (3) is fixed to the side wall of the water tank (2); a distance meter is installed at the bottom of the base (1), and a detection end of the distance meter faces the bottom of the water tank (2); during the test, the water tank (2) is filled with distilled water (14), the test block (13) is suspended in the distilled water (14) by the lifting assembly, and the test block (13) is located above the distance meter.

2. The device for detecting water absorption of putty for building exterior walls according to claim 1, characterized in that: The lifting assembly comprises a support frame, a wire wheel (7), a fixed pulley (5), a twisted wire (18), a suspension ring (9) and a suspension wire (10). The support frame comprises a vertical rod (8) and a horizontal rod (6) arranged in an L shape. The bottom of the vertical rod (8) is fixed to a base (1), and the top of the vertical rod (8) is fixed to one end of the horizontal rod (6). The wire wheel (7) is rotatably mounted on one end of the horizontal rod (6) close to the vertical rod (8). The fixed pulley (5) is arranged at one end of the vertical rod (8) away from the horizontal rod (6). One end of the suspension wire (10) is fixed to the wire wheel (7), and the other end is connected to the suspension ring (9) by passing through the fixed pulley (5). A plurality of suspension wires (10) are arranged, and one end of each of the plurality of suspension wires (10) is connected to the suspension ring (9), and the other end is used to be connected to a test block (13).

3. The device for detecting water absorption of putty for building exterior walls according to claim 2, characterized in that: The test block groove (12) is a groove body formed by a plurality of plate structures with L-shaped cross sections and having two upper and lower openings. The end of the hanging wire (10) away from the hanging ring (9) is connected to the side wall of the test block groove (12), and the test block (13) is placed in the test block groove (12).

4. The device for detecting water absorption of putty for building exterior walls according to claim 3, characterized in that: A lifting lug (11) is arranged on the outer side of the test block groove (12), and the hanging wire (10) is connected to the lifting lug (11).

5. The device for detecting water absorption of putty for building exterior walls according to claim 2, characterized in that: One end of the horizontal rod (6) away from the vertical rod (8) coincides with the center of the water tank (2).

6. The device for detecting water absorption of putty for building exterior walls according to claim 1, characterized in that: The water inlet pipe (4) of the water level measuring and controlling device (3) is fixed to the upper edge of the water tank (2), and the end of the water inlet pipe (4) is flush with the inner edge of the water tank (2).

7. The device for detecting water absorption of putty for building exterior walls according to claim 1, characterized in that: A detection hole is provided at the bottom of the base (1), and the rangefinder is installed in the detection hole.

8. The device for detecting water absorption of putty for building exterior walls according to claim 1, characterized in that: During the test, the distance between the bottom of the test block (13) and the bottom wall of the water tank (2) was 40 mm.

9. The device for detecting water absorption of putty for building exterior walls according to claim 1, characterized in that: A plurality of adjusting bolts (16) are arranged at the bottom of the base (1).

10. The device for detecting water absorption of putty for building exterior walls according to claim 9, characterized in that: A level bubble (15) is installed on the base (1).

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