Thermal insulation cotton density detection equipment for building

Abstract

The utility model relates to the field of thermal insulation cotton density detection, in particular to building thermal insulation cotton density detection equipment which comprises a shell. The shell is of a rectangular structure, a water storage bin and a lifting bin are horizontally arranged in the shell in the length direction of the shell, water is injected into the water storage bin and the lifting bin, an overflow port is formed between the water storage bin and the lifting bin, the water storage bin is used for storing heat preservation cotton, and a first weighing plate is arranged at the bottom of the water storage bin. A first weighing plate is arranged at the bottom of the lifting bin, a first pressure sensor is arranged on the upper portion of the first weighing plate and used for weighing substances stored in the water storage bin below the overflow port, a second weighing plate is arranged at the bottom of the lifting bin, and a second pressure sensor is arranged on the upper portion of the second weighing plate. And the second pressure sensor is used for weighing substances stored in the lifting bin below the overflow port. According to the utility model, errors during volume measurement are reduced, and the accuracy of a final detection result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of thermal insulation cotton density detection, specifically relates to a building thermal insulation cotton density detection equipment. BACKGROUND

[0002] In order to guarantee the production quality of thermal insulation cotton, the density, sound insulation, heat insulation and other performances of thermal insulation cotton need to be detected after production, Chinese patent publication No. CN221124391U discloses a rubber and plastic thermal insulation cotton detection device, which comprises a box body, a displacement assembly and a flow guide port, the top of the box body is fixed with a fixing frame through bolts, displacement assemblies are arranged on both sides in the box body and the fixing frame, and a limiting assembly is slidably connected in the box body.

[0003] The above scheme provides a device for detecting the heat insulation performance of thermal insulation cotton, and in the prior art, the density detection of thermal insulation cotton is relatively simple, common methods are direct weighing method, volume measurement method and water weighing method, in the above three measurement methods, the direct weighing method and the volume measurement method are suitable for the detection of thermal insulation cotton with large mass, and the water weighing method can only be used for the detection of thermal insulation cotton with light mass and capable of floating on the water surface, but most of the thermal insulation cotton without special treatment cannot float on the water surface, and the direct weighing method is easily affected by external environmental factors, and the volume of thermal insulation cotton also needs to be determined, and similarly, the volume of thermal insulation cotton sampled by manual sampling method has errors, which further causes errors in the subsequent results. UTILITY MODEL CONTENTS

[0004] In view of the above problems, a building thermal insulation cotton density detection equipment is provided, which sets a water storage bin and a lifting bin in the shell, when testing, the thermal insulation cotton coated with heat shrink film is put into the water storage bin, so that the second pressure sensor in the lifting bin detects the water volume discharged from the lifting bin, and then the volume of the thermal insulation cotton is calculated, since the thickness of the heat shrink film is very small, it can be ignored, so as to determine the actual volume of the thermal insulation cotton, and the first pressure sensor arranged in the water storage bin can also detect the weight change after the thermal insulation cotton is put in, the detected change value and the value detected by the second pressure sensor are added, and the actual weight of the thermal insulation cotton can be obtained, which improves the accuracy of the detection result.

[0005] In order to solve the prior art problems, the utility model provides a building thermal -insulation cotton density detection equipment, including the shell, the shell is rectangular structure, the length direction of the shell is arranged with the water storage bin and the lifting bin in the shell, the water storage bin and the lifting bin all are injected with water, be provided with the overflow outlet between the water storage bin and the lifting bin, the water storage bin is used for storing the thermal -insulation cotton, be provided with the first weighing plate in the bottom of water storage bin, the upper portion of first weighing plate is provided with first pressure sensor, and first pressure sensor weighs the material stored in the water storage bin under the overflow outlet, be provided with the second weighing plate in the bottom of lifting bin, the upper portion of second weighing plate is provided with second pressure sensor, and second pressure sensor weighs the material stored in the lifting bin under the overflow outlet.

[0006] Preferably, a partition plate is vertically arranged in the water storage bin to divide the water storage bin into a first cavity and a second cavity, the lower side of the partition plate is provided with a through hole, the height of the through hole is lower than the height of the overflow outlet, the first cavity and the second cavity are horizontally arranged along the length direction of the shell, and the first cavity is farther away from the lifting bin than the second cavity.

[0007] Preferably, a fixing frame is horizontally arranged on the upper portion of the second weighing plate, the fixing frame is located below the overflow outlet, a corrugated sleeve is vertically arranged between the fixing frame and the second weighing plate, the upper portion and the lower portion of the corrugated sleeve are fixedly connected with the fixing frame and the second weighing plate respectively, and the second weighing plate, the fixing frame and the corrugated sleeve jointly constitute the lifting bin.

[0008] Preferably, a lifting unit is arranged on the shell, the lifting unit comprises a second threaded rod which is vertically arranged on the second weighing plate, the second threaded rod is threadedly connected with the second weighing plate, a second guide rod is arranged on one side of the second threaded rod in parallel with the axis of the second threaded rod, the second guide rod vertically penetrates the second weighing plate and is slidably connected with the second weighing plate in the vertical direction, and a rotary driver is arranged on the upper end of the second threaded rod to drive the second threaded rod to rotate.

[0009] Preferably, the lifting unit further comprises a first threaded rod which is rotatably arranged in the water storage bin in the vertical direction, the first threaded rod vertically penetrates the first weighing plate and is threadedly connected with the first weighing plate, a first guide rod is arranged on one side of the first threaded rod, the first guide rod vertically penetrates the first weighing plate and is slidably connected with the first weighing plate in the vertical direction, a first gear is fixedly arranged on the upper end of the first threaded rod, a second gear is engaged with one side of the first gear, a belt transmission mechanism is arranged on the upper end of the second gear and the upper end of the second threaded rod, the rotary driver drives the second gear to rotate through the belt transmission mechanism, the diameter of the first gear is greater than the diameter of the second gear, and a plurality of water passing holes are uniformly distributed on the first weighing plate.

[0010] Preferably, a fan is arranged on the upper portion of the lifting bin, and the fan blows air into the lifting bin in the vertical direction.

[0011] The beneficial effects of the present application compared to the prior art are:

[0012] 1、In the detection of the thermal insulation cotton, the second weighing plate at the bottom of the lifting bin is first lifted in the vertical direction, and the second weighing plate supports the water in the lifting bin to rise to the overflow outlet, at this time, the water in the water storage bin and the water in the lifting bin are connected through the overflow outlet and the liquid level is flush, and the water level at this time is higher than the lower side of the overflow outlet, then the second weighing plate at the bottom of the lifting bin is lowered, the excess water in the water storage bin overflows from the overflow outlet into the lifting bin, as the second weighing plate continues to descend, the liquid level of the water in the water storage bin is flush with the lower side of the overflow outlet, and the water in the water storage bin no longer overflows, the second pressure sensor on the second weighing plate weighs the mass of the water in the lifting bin, and the current weight is zeroed, and at this time, the measured value of the first pressure sensor on the first weighing plate is also zeroed. Then the cover plate is opened, and the thermal insulation cotton wrapped by the packaging heat shrink film is placed in the water storage bin, and the thermal insulation cotton is completely immersed in the water in the water storage bin, during the process that the thermal insulation cotton is immersed in the water storage bin, the water in the water storage bin overflows into the lifting bin through the overflow outlet, so that the second pressure sensor can monitor the amount of water a entering the lifting bin. Since the density of water is known, the volume of the thermal insulation cotton can be calculated by the mass a and the density of the water, and the mass increase b of the water storage bin monitored by the first pressure sensor is the constant amount of the external covering material such as the sealing bag or the packaging heat shrink film used for covering the thermal insulation cotton. After removing the constant amount of the external covering material of the thermal insulation cotton, the actual mass of the thermal insulation cotton can be calculated, and the actual mass of the thermal insulation cotton is a+b-constant amount of the covering material. Thus, the density of the thermal insulation cotton can be calculated by the mass and the volume of the thermal insulation cotton, which reduces the error in volume measurement and improves the accuracy of the final detection result.

[0013] 2、By setting the partition, it is ensured that when the thermal insulation cotton is placed, the dust floating on the liquid surface in the water storage bin will not flow into the lifting bin through the overflow port, the cleaning and maintenance time of the lifting bin is prolonged, and the cleaning workload is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a three-dimensional schematic view of the building thermal insulation cotton density detection equipment of the utility model.

[0015] Figure 2 is a side view of the building thermal insulation cotton density detection equipment of the utility model.

[0016] Figure 3 is a three-dimensional schematic view of the building thermal insulation cotton density detection equipment of the utility model. Figure 2 is a sectional view of the building thermal insulation cotton density detection equipment of the utility model at A-A.

[0017] Figure 4 is a sectional view of the building thermal insulation cotton density detection equipment of the utility modelFigure 1 .

[0018] Figure 5 is the sectional view of the building thermal insulation cotton density detection equipment of the utility model Figure 2 .

[0019] Figure 6 is the sectional view of the building thermal insulation cotton density detection equipment of the utility model Figure 5 the local enlarged view of B in the middle.

[0020] Figure 7 is the sectional view of the building thermal insulation cotton density detection equipment of the utility model Figure 3 .

[0021] Reference signs in the drawings are:

[0022] 1, shell; 11, water storage bin; 111, first weighing plate; 12, overflow outlet; 13, lifting bin; 131, second weighing plate; 132, fixing frame; 133, corrugated sleeve; 14, cover plate; 15, partition; 2, thermal insulation cotton; 3, lifting unit; 31, second threaded rod; 32, second guide rod; 33, rotary driver; 34, first threaded rod; 35, first guide rod; 36, belt drive mechanism; 361, synchronous wheel; 362, synchronous belt; 37, first gear; 38, second gear; 4, fan. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0024] With reference to Figure 1 , Figure 3 , Figure 4 and Figure 7 : a building thermal insulation cotton density detection equipment, including shell 1;The shell 1 is rectangular structure, and the water storage bin 11 and the lifting bin 13 are horizontally arranged in the length direction of the shell 1 in the shell 1, water is injected in the water storage bin 11 and the lifting bin 13, and the overflow outlet 12 is arranged between the water storage bin 11 and the lifting bin 13, the water storage bin 11 is used to store thermal insulation cotton 2, the first weighing plate 111 is arranged at the bottom of the water storage bin 11, the upper portion of the first weighing plate 111 is provided with a first pressure sensor, the first pressure sensor weighs the material stored in the water storage bin 11 below the overflow outlet 12, the second weighing plate 131 is arranged at the bottom of the lifting bin 13, and the upper portion of the second weighing plate 131 is provided with a second pressure sensor, and the second pressure sensor weighs the material stored in the lifting bin 13 below the overflow outlet 12.

[0025] The cover plate 14 is hinged to the upper portion of the water storage bin 11, and the total water storage capacity of the detection device is greater than the water storage capacity of the water storage bin 11, that is, when the water storage bin 11 is full, there is still part of the water in the lifting bin 13. When the thermal insulation cotton 2 is detected, the second weighing plate 131 at the bottom of the lifting bin 13 is first lifted in the vertical direction, and the second weighing plate 131 supports the water in the lifting bin 13 to rise to the overflow outlet 12, at this time, the water in the water storage bin 11 and the water in the lifting bin 13 are connected through the overflow outlet 12 and the liquid level is flat, at this time, the water level is higher than the lower side of the overflow outlet 12, then the second weighing plate 131 at the bottom of the lifting bin 13 is lowered, and the excess water in the water storage bin 11 overflows from the overflow outlet 12 into the lifting bin 13, as the second weighing plate 131 continues to descend, the water level in the water storage bin 11 is flat with the lower side of the overflow outlet 12, and the water in the water storage bin 11 no longer overflows, the second pressure sensor on the second weighing plate 131 weighs the mass of the water in the lifting bin 13, and the current weight is zeroed, and at this time, the value measured by the first pressure sensor on the first weighing plate 111 is also zeroed. Then open the cover plate 14, and put the thermal insulation cotton 2 wrapped by the packaging heat shrink film into the water storage bin 11, the packaging heat shrink film wrapped outside the thermal insulation cotton 2 is to avoid the thermal insulation cotton 2 from absorbing the water source of the water storage bin 11, and in actual tests, the thermal insulation cotton 2 can also be contained in a sealed bag and the like, thereby affecting the subsequent monitoring results. The thermal insulation cotton 2 detected by the present application is not subjected to special process, so the density of the thermal insulation cotton 2 is greater than that of water, after the thermal insulation cotton 2 is put into the water storage bin 11, the thermal insulation cotton 2 is completely immersed in the water in the water storage bin 11, and in the process of the thermal insulation cotton 2 being immersed in the water storage bin 11, the water in the water storage bin 11 overflows into the lifting bin 13 through the overflow outlet 12, so that the second pressure sensor can monitor the amount of water a entering the lifting bin 13. Since the density of water is known, the volume of water can be calculated by the mass a and the density, that is, the volume of the thermal insulation cotton 2, and the first pressure sensor monitors the mass increase b of the water storage bin 11, the amount of the external covering material such as the sealed bag or the packaging heat shrink film used for wrapping the thermal insulation cotton 2 is constant, after the constant amount of the external covering material of the thermal insulation cotton 2 is removed, the actual mass of the thermal insulation cotton 2 can be calculated, and the actual mass of the thermal insulation cotton 2 is a+b-constant amount of the covering material. Thus, the density of the thermal insulation cotton 2 can be calculated by the mass and the volume of the thermal insulation cotton 2, the error in volume measurement is reduced, and the accuracy of the final detection result is improved.

[0026] Referring to Figure 3 The water storage bin 11 is vertically provided with a partition plate 15 for dividing the water storage bin 11 into a first cavity and a second cavity, the lower side of the partition plate 15 is provided with a through hole, the height of the through hole is lower than the height of the overflow outlet 12, the first cavity and the second cavity are horizontally arranged along the length direction of the shell 1, and the first cavity is farther away from the lifting bin 13 than the second cavity.

[0027] Although the outside of the thermal cotton 2 is wrapped by the heat shrinkable film or the sealed bag, when put into the water storage bin 11, the dust will enter the storage bin, and the lighter dust will float on the liquid surface of the water storage bin 11. If the water storage bin 11 is not provided with the partition plate 15, the floating dust will directly flow into the lifting bin 13 through the overflow port. The lifting bin 13 is more difficult to clean than the water storage bin 11. Thus, the water storage bin 11 is separated into the first cavity and the second cavity by the partition plate 15. The first cavity receives the thermal cotton 2, and the second cavity serves as a communication function. The partition plate 15 blocks the dust floating on the liquid surface of the first cavity, and the dust with larger mass directly falls to the bottom of the water storage bin 11. Since the upper part of the water storage bin 11 is provided with the cover plate 14, when the water storage bin 11 is cleaned, the cover plate 14 only needs to be turned over.

[0028] With reference to Figure 3 and Figure 7 : The fixed frame 132 is horizontally arranged on the upper part of the second weighing plate 131 and is located below the overflow port 12. The corrugated sleeve 133 is vertically arranged between the fixed frame 132 and the second weighing plate 131. The upper part and the lower part of the corrugated sleeve 133 are fixedly connected with the fixed frame 132 and the second weighing plate 131, respectively. The second weighing plate 131, the fixed frame 132 and the corrugated sleeve 133 jointly constitute the lifting bin 13.

[0029] With reference to Figure 2 and Figure 7 : The lifting unit 3 is arranged on the shell 1. The lifting unit 3 includes the second threaded rod 31 which is arranged on the second weighing plate 131 in the vertical direction. The second threaded rod 31 is threadedly connected with the second weighing plate 131. The second guide rod 32 is arranged in parallel with the axis of the second threaded rod 31 on one side of the second threaded rod 31 in the vertical direction. The second guide rod 32 penetrates the second weighing plate 131 in the vertical direction and is slidably connected with the second weighing plate 131 in the vertical direction. The rotary driver 33 is arranged on the upper end of the second threaded rod 31 and is used to drive the second threaded rod 31 to rotate.

[0030] The rotary driver 33 is preferably a servo motor. The second threaded rod 31 is driven to rotate by the rotary driver 33, so that the second weighing plate 131 can be lifted in the vertical direction.

[0031] With reference to Figure 5 and Figure 7The lifting unit 3 further comprises a first threaded rod 34 arranged in the water storage bin 11 and rotating in the vertical direction, the first threaded rod 34 vertically penetrates the first weighing plate 111 and is in threaded cooperation with the first weighing plate 111, a first guide rod 35 is arranged on one side of the first threaded rod 34, the first guide rod 35 vertically penetrates the first weighing plate 111 and is in sliding cooperation with the first weighing plate 111, a first gear 37 is fixedly arranged at the upper end of the first threaded rod 34, one side of the first gear 37 is engaged with a second gear 38, a belt transmission mechanism 36 is arranged at the upper end of the second gear 38 and the upper end of the second threaded rod 31, the rotary driver 33 drives the second gear 38 to rotate through the belt transmission mechanism 36, the diameter of the first gear 37 is greater than the diameter of the second gear 38, and a plurality of water passing holes are uniformly distributed on the first weighing plate 111.

[0032] The belt transmission mechanism 36 comprises a synchronous wheel 361 and a synchronous belt 362, two synchronous wheels 361 are fixedly arranged at the upper end of the second gear 38 and the upper end of the second threaded rod 31 respectively, and the synchronous belt 362 is sleeved on the two synchronous wheels 361 respectively and is in transmission cooperation with the synchronous wheels 361. Since the first weighing plate 111 needs to support the thermal insulation cotton 2, in order to reduce the load of the rotary driver 33, the first gear 37 and the second gear 38 are arranged on the upper part of the first threaded rod 34, the rotation of the first threaded rod 34 is decelerated through the meshing of the first gear 37 and the second gear 38, so that the first weighing plate 111 and the second weighing plate 131 are synchronously raised or lowered after the rotary driver 33 is started, and the rising height of the first weighing plate 111 is lower than the height of the second weighing plate 131. When the gear ratio of the first gear 37 and the second gear 38 is set, it is only necessary to ensure that the first weighing plate 111 can lift the thermal insulation cotton 2 out of the water in the water storage bin 11 during the rising process, which facilitates the experimental personnel to take out the thermal insulation cotton 2 after the detection is completed. During the rising process of the first weighing plate 111, the water on the upper part of the first weighing plate 111 falls into the lower part of the first weighing plate 111 through the water passing holes, avoiding the situation that the water in the water storage bin 11 is synchronously lifted up when the first weighing plate 111 rises, and further avoiding the situation that the water in the water storage bin 11 overflows from the upper part of the water storage bin 11.

[0033] With reference to Figure 1 and Figure 7 A fan 4 is arranged on the upper part of the lifting bin 13, and the fan 4 blows air into the lifting bin 13 in the vertical direction.

[0034] Since the side wall of the lifting bin 13 is composed of the corrugated sleeve 133, part of the water flowing into the lifting bin 13 will adhere to the side wall of the corrugated sleeve 133, thereby causing deviation of the detection result, and the flowing air blown into the lifting bin 13 by the fan 4 can make the water adhering to the corrugated sleeve 133 drop to the bottom of the lifting bin 13.

[0035] Working principle: when the heat preservation cotton 2 is detected, the second weighing plate 131 at the bottom of the lifting bin 13 is first lifted in the vertical direction, the water in the lifting bin 13 is lifted to the overflow outlet 12, at this time the water in the water storage bin 11 and the water in the lifting bin 13 are communicated through the overflow outlet 12 and the liquid level is flush, at this time the water level is higher than the lower side of the overflow outlet 12, then the second weighing plate 131 at the bottom of the lifting bin 13 is lowered, the excess water in the water storage bin 11 overflows from the overflow outlet 12 into the lifting bin 13, as the second weighing plate 131 continues to descend, the water level in the water storage bin 11 is flush with the lower side of the overflow outlet 12, the water in the water storage bin 11 no longer overflows, the second pressure sensor on the second weighing plate 131 weighs the mass of the water in the lifting bin 13, and the current weight is zeroed, and at this time the measured value of the first pressure sensor on the first weighing plate 111 is also zeroed. Then open the cover plate 14, and put the heat preservation cotton 2 wrapped by the packaging heat shrink film into the water storage bin 11, the packaging heat shrink film wrapped outside the heat preservation cotton 2 is to avoid the heat preservation cotton 2 from absorbing the water source of the water storage bin 11, and in the actual test, the heat preservation cotton 2 can also be contained in a sealed bag, thereby affecting the subsequent monitoring result, the heat preservation cotton 2 detected by the application is not treated by a special process, so the density of the heat preservation cotton 2 is greater than that of water, after the heat preservation cotton 2 is put into the water storage bin 11, the heat preservation cotton 2 is completely immersed in the water in the water storage bin 11, during the process that the heat preservation cotton 2 is immersed in the water storage bin 11, the water in the water storage bin 11 overflows into the lifting bin 13 through the overflow outlet 12, so that the second pressure sensor can monitor the amount of water a entering the lifting bin 13, since the density of water is known, so the volume of water can be calculated through the mass a and the density of water, that is, the volume of the heat preservation cotton 2, and the first pressure sensor monitors the mass increase b of the water storage bin 11, the amount of the external coating material such as the sealed bag or the packaging heat shrink film used for coating the heat preservation cotton 2 is constant, after the constant amount of the external coating material of the heat preservation cotton 2 is removed, the actual mass of the heat preservation cotton 2 can be calculated, the actual mass of the heat preservation cotton 2 is a+b-constant amount of the coating material, so the density of the heat preservation cotton 2 can be calculated through the mass and the volume of the heat preservation cotton 2, the error in volume measurement is reduced, and the accuracy of the final detection result is improved.

[0036] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A building insulation cotton density detection device, comprising a shell (1); characterized in that The shell (1) is of a rectangular structure, a water storage bin (11) and a lifting bin (13) are horizontally arranged along the length direction of the shell (1) in the shell (1), water is filled in the water storage bin (11) and the lifting bin (13), an overflow outlet (12) is arranged between the water storage bin (11) and the lifting bin (13), the water storage bin (11) is used for storing insulation cotton (2), a first weighing plate (111) is arranged at the bottom of the water storage bin (11), a first pressure sensor is arranged at the upper portion of the first weighing plate (111), the first pressure sensor weighs the material stored in the water storage bin (11) below the overflow outlet (12), a second weighing plate (131) is arranged at the bottom of the lifting bin (13), a second pressure sensor is arranged at the upper portion of the second weighing plate (131), the second pressure sensor weighs the material stored in the lifting bin (13) below the overflow outlet (12).

2. The building thermal insulation cotton density detection device according to claim 1, characterized in that, A partition plate (15) is vertically arranged in the water storage bin (11) to divide the water storage bin (11) into a first cavity and a second cavity, a through hole is arranged at the lower side of the partition plate (15), the height of the through hole is lower than the height of the overflow outlet (12), the first cavity and the second cavity are horizontally arranged along the length direction of the shell (1), and the first cavity is farther away from the lifting bin (13) than the second cavity.

3. The building insulation cotton density detection device according to claim 1, characterized in that, A fixing frame (132) is horizontally arranged at the upper portion of the second weighing plate (131) and located below the overflow outlet (12), a corrugated sleeve (133) is vertically arranged between the fixing frame (132) and the second weighing plate (131), the upper portion and the lower portion of the corrugated sleeve (133) are fixedly connected with the fixing frame (132) and the second weighing plate (131) respectively, and the second weighing plate (131), the fixing frame (132) and the corrugated sleeve (133) jointly constitute the lifting bin (13).

4. The building insulation cotton density detection device according to claim 1, characterized in that, A lifting unit (3) is arranged on the shell (1), the lifting unit (3) comprises a second threaded rod (31) which is vertically arranged on the second weighing plate (131), the second threaded rod (31) is threadedly connected with the second weighing plate (131), a second guide rod (32) is arranged in parallel with the axis of the second threaded rod (31) on one side of the second threaded rod (31) in the vertical direction, the second guide rod (32) penetrates the second weighing plate (131) in the vertical direction and is in sliding fit with the second weighing plate (131) in the vertical direction, and a rotary driver (33) is arranged at the upper end of the second threaded rod (31) and used for driving the second threaded rod (31) to rotate.

5. The building insulation cotton density detection device according to claim 4, characterized in that, The lifting unit (3) further comprises a first threaded rod (34) arranged in the water storage bin (11) and rotating in the vertical direction, the first threaded rod (34) vertically penetrates the first weighing plate (111) and is in threaded cooperation with the first weighing plate (111), a first guide rod (35) is arranged on one side of the first threaded rod (34), the first guide rod (35) penetrates the first weighing plate (111) in the vertical direction and is in sliding cooperation with the first weighing plate (111), a first gear (37) is fixedly arranged at the upper end of the first threaded rod (34), one side of the first gear (37) is engaged with a second gear (38), a belt transmission mechanism (36) is arranged at the upper end of the second gear (38) and the upper end of the second threaded rod (31), the rotary driver (33) drives the second gear (38) to rotate through the belt transmission mechanism (36), the diameter of the first gear (37) is greater than the diameter of the second gear (38), and the first weighing plate (111) is uniformly provided with a plurality of water passing holes.

6. The building insulation cotton density detection device according to claim 1, characterized in that, A fan (4) is arranged at the upper portion of the lifting bin (13), and the fan (4) blows air into the lifting bin (13) in the vertical direction.

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