Dry-mixed mortar dust suppression performance testing device

Abstract

The utility model discloses a dust suppression performance testing device for dry-mixed mortar, and belongs to the technical field of building material testing. The dry-mixed mortar dust suppression performance testing device comprises a bottom plate; the tank body is made of a transparent material, a tank body opening is formed in the side face of the tank body and used for containing dry-mixed mortar, and a tank cover is movably connected to the tank body opening; the rotating device comprises a driving motor fixedly arranged on the bottom plate, a supporting rotating assembly for supporting the tank body, and a first mounting sleeve and a second mounting sleeve which are fixedly arranged at the two ends of the bottom surface of the tank body, and a rotating wheel is arranged on an output shaft of the driving motor; the light emitter and the light receiver are oppositely arranged on the two sides of the bottom face of the tank body, the light receiver is electrically connected with the photoelectric converter, and the light emitter and the light receiver are located at the horizontal height position of the upper middle portion of the tank body in the static state. The device for testing the dust suppression performance of the dry-mixed mortar can be used for conveniently, quickly and accurately evaluating the dust suppression performance of the dry-mixed mortar and improving the working efficiency of testing.

Description

Technical Field

[0001] The utility model relates to the technical field of building material testing, in particular to a testing device for the dust suppression performance of dry-mixed mortar. Background Technique

[0002] With the rapid development of China's economy, the prosperity of the construction industry has promoted the continuous expansion of the use range of dry-mixed mortar. However, a large amount of dust will be generated during the use of dry-mixed mortar. The substances that generate dust in dry-mixed mortar are mainly the binder and modifier of extremely fine components. Its main characteristics are small particle size and relatively light density. Under mechanical vibration or other external forces, dust will be emitted. The dust generated during the production of dry-mixed mortar due to mechanical stirring or scattering during handling will affect the physical and mental health of production workers, pollute the production equipment and working environment of the workshop; during use, when dry-mixed mortar is poured into water for stirring, the generated dust will affect the physical health of construction workers. At present, dust suppressants are added to dry-mixed mortar to inhibit dust emission, so as to ensure the reduction of dust generation during the transportation and use of dry-mixed mortar.

[0003] Therefore, the testing of the dust suppression performance of dry-mixed mortar is particularly important. However, traditional testing methods often take a long time and are laborious, affecting the wide range of their application scenarios. Summary of the Utility Model

[0004] The utility model provides a testing device for the dust suppression performance of dry-mixed mortar, which can conveniently, quickly and accurately test the dust suppression performance of dry-mixed mortar.

[0005] The technical solution provided by the utility model is as follows:

[0006] A testing device for the dust suppression performance of dry-mixed mortar, comprising:

[0007] A bottom plate;

[0008] A transparent tank body. A tank body opening is provided on the side of the tank body for putting dry-mixed mortar. A tank cover is movably connected to the tank body opening, and the tank cover is hermetically connected to the tank body when connected;

[0009] A rotating device, including a driving motor fixedly arranged on the bottom plate, a supporting and rotating assembly for supporting the tank body, a first mounting sleeve and a second mounting sleeve fixedly arranged at both ends of the bottom surface of the tank body. The supporting and rotating assembly is used to support the tank body and rotate stably. A runner is arranged on the output shaft of the driving motor;

[0010] The first mounting sleeve is a stepped circular ring. The first mounting sleeve includes a tank body connecting part of the first step and a runner connecting part of the second step. The tank body connecting part is sleeved on one end of the tank body. The outside of the tank body connecting part is rotatably connected to two supporting and rotating assemblies, and the runner connecting part is rotatably connected to the runner;

[0011] The second mounting sleeve is an annular sleeve, which is fixedly sleeved on the other end of the tank body, and the second mounting sleeve is rotatably connected to the other two support rotating components;

[0012] The light emitter and the light receiver are oppositely arranged on both sides of the bottom surface of the tank body. The light receiver is electrically connected to the photoelectric converter, and the light emitted by the light emitter enters the light receiver through the tank body;

[0013] The horizontal height positions of the light emitter and the light receiver at the upper middle part of the stationary tank body;

[0014] The light emitter, the light receiver, the photoelectric converter and the drive motor are respectively electrically connected to the controller, and the controller is electrically connected to the computer terminal.

[0015] According to the dry mortar dust suppression performance testing device described above, at least one baffle is arranged along the circumference inside the tank body.

[0016] According to the dry mortar dust suppression performance testing device described above, the outer surface of the runner connecting part is provided with first teeth along the circumference, the runner is provided with second teeth that cooperate with the first teeth, the first teeth are meshed with the second teeth, and the operation of the drive motor drives the runner to rotate, thereby driving the tank body to rotate.

[0017] According to the dry mortar dust suppression performance testing device described above, the support rotating component includes a support, a pulley is rotatably arranged on the support, and the pulley is respectively rotatably connected to the outside of the tank body connecting part of the first mounting sleeve and the outside of the second mounting sleeve;

[0018] A pulley placement groove and a shaft hole are formed in the upper part of the support. A rotating shaft is inserted into the shaft hole, a pulley is sleeved on the rotating shaft, and the pulley rotates in the pulley placement groove.

[0019] Further, an annular groove is formed along the circumference on the outside of the pulley. The first stepped tank body connecting part of the first mounting sleeve and the outside of the second mounting sleeve are respectively provided with a first annular protrusion and a second annular protrusion, and the first annular protrusion and the second annular protrusion are respectively embedded into the annular grooves of the two pulleys.

[0020] Further, the depth of the annular groove is the same as the height of the first annular protrusion and the second annular protrusion. When the pulley is connected to the first mounting sleeve and the second mounting sleeve, the bottom surface of the annular groove is in contact with the top surfaces of the first annular protrusion and the second annular protrusion, and the outer side surface of the pulley is in contact with the outer side surfaces of the first mounting sleeve and the second mounting sleeve.

[0021] According to the dry mortar dust suppression performance testing device described above, it further includes a first optical fiber between the light emitter and the tank body, a second optical fiber between the tank body and the light receiver, and opposite round holes are formed on the bottom surfaces on both sides of the tank body;

[0022] One end of the first optical fiber is connected to the transmitting end of the optical transmitter, and the other end is disposed in the round hole at the bottom surface of the tank body; one end of the second optical fiber is connected to the receiving end of the optical receiver, and the other end is disposed in the round hole at the other bottom surface of the tank body.

[0023] The first optical fiber is respectively connected to the optical transmitter and the round hole of the tank body through a connector.

[0024] The second optical fiber is respectively connected to the optical receiver and the round hole of the tank body through a connector.

[0025] Further, the coupling between the optical transmitter and the first optical fiber is direct coupling or lens coupling.

[0026] Further, the first optical fiber and the second optical fiber are polymer multimode optical fibers or quartz multimode optical fibers;

[0027] When polymer multimode optical fibers are adopted, the fiber diameters of the first optical fiber and the second optical fiber can be from 0.1 mm to 3 mm;

[0028] When quartz multimode optical fibers are adopted, the fiber diameters of the first optical fiber and the second optical fiber are between 0.1 mm and 0.5 mm.

[0029] According to the dry mortar dust suppression performance testing device described above, it further includes an opaque outer shell movably disposed on the upper surface of the bottom plate;

[0030] The outer shell covers the tank body, the tank cover, the rotating device, the optical transmitter and the optical receiver in a closed space.

[0031] The utility model has the following beneficial effects:

[0032] (1). By simulating the actual construction conditions, after the dry mortar is stirred up, the dry mortar freely falls under the action of gravity, and the determination index of the dust suppression characteristics of the dust suppression dry mortar is quantified based on the amount of dust in the suspended state during the falling process, which can conveniently, quickly and accurately evaluate the dust suppression performance of the dry mortar and improve the working efficiency of the test;

[0033] (2). The first optical fiber and the second optical fiber are used as the transmission media of light, which avoids the influence of the reflection of light by the tank body, and at the same time avoids the light passing through the two bottom surfaces of the tank body attached with dry mortar dust, thereby affecting the accuracy of the test results;

[0034] (3). The setting of the outer shell avoids the influence of the external environment on the test process and improves the accuracy of the test results. Description of the Drawings

[0035] Figure 1 It is a perspective view of the dry mortar dust suppression performance testing device of Embodiment 1;

[0036] Figure 2 It isFigure 1 Partial enlarged view at A in

[0037] Figure 3 Front view of the dry mortar dust suppression performance testing device of Example 1;

[0038] Figure 4 is Figure 3 Section view taken along line B-B in

[0039] Figure 5 is Figure 4 Partial enlarged view at C in

[0040] Figure 6 Stereogram of the combined state of the tank body, tank cover, first mounting sleeve and second mounting sleeve;

[0041] Figure 7 Front view of the combined state of the tank body, tank cover, first mounting sleeve and second mounting sleeve;

[0042] Figure 8 is Figure 7 Section view taken along line D-D in

[0043] Figure 9 is Figure 7 Section view taken along line E-E in

[0044] Figure 10 Stereogram of the first mounting sleeve Figure 1 ;

[0045] Figure 11 Stereogram of the first mounting sleeve Figure 2 ;

[0046] Figure 12 Stereogram of the second mounting sleeve Figure 1 ;

[0047] Figure 13 Stereogram of the second mounting sleeve Figure 2 ;

[0048] Figure 14 Stereogram of the combined state of the bottom plate, drive motor, runner and support rotating assembly;

[0049] Figure 15 Stereogram of the support rotating assembly;

[0050] Figure 16 Front view of the support rotating assembly;

[0051] Figure 17 Top view of the support rotating assembly;

[0052] Figure 18 Stereogram of the support;

[0053] Figure 19 The three-dimensional view of the dry mortar dust suppression performance testing device of Example 2 Figure 1 ;

[0054] Figure 20 For Figure 19 The partial enlarged view at position F in

[0055] Figure 21 The three-dimensional view of the dry mortar dust suppression performance testing device of Example 2 Figure 2 ;

[0056] Figure 22 For Figure 11 The partial enlarged view at position G in

[0057] Figure 23 The three-dimensional view of the tank body of Example 2

[0058] Figure 24 The three-dimensional view of the dry mortar dust suppression performance testing device of Example 3

[0059] Figure 25 The front view of the dry mortar dust suppression performance testing device of Example 3

[0060] Figure 26 The experimental data schematic diagram of the dry mortar dust suppression performance testing device of Example 1

[0061] In the figure, 100 is the bottom plate; 200 is the tank body; 201 is the tank body opening; 202 is the baffle; 203 is the round hole; 300 is the tank cover; 400 is the driving motor; 500 is the support rotating assembly; 501 is the support; 5011 is the pulley placement groove; 5012 is the rotating shaft hole; 502 is the pulley; 5021 is the annular groove; 503 is the rotating shaft; 600 is the first mounting sleeve; 601 is the tank body connecting part; 6011 is the first annular protrusion; 602 is the runner connecting part; 603 is the first tooth; 700 is the second mounting sleeve; 701 is the second annular protrusion; 800 is the runner; 801 is the second tooth; 900 is the light emitter; 1000 is the light receiver; 1100 is the first optical fiber; 1200 is the second optical fiber; 1300 is the connector; 1400 is the housing; 1500 is the first bracket; 1600 is the second bracket. Detailed implementation manners

[0062] To make the technical problems, technical solutions and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the Figures 1 to 26 accompanying drawings of the specification and specific embodiments.

[0063] Example 1:

[0064] The dust suppression performance testing device for dry mortar includes a bottom plate 100, a tank body 200, a tank cover 300, a rotating device, a light emitter 900, and a light receiver 1000. The tank body 200 made of transparent material is cylindrical, the axis of the tank body 200 is parallel to the bottom plate 100, the tank body 200 is placed horizontally on the rotating device, and a tank opening 201 is provided on the side of the tank body 200 for putting dry mortar. A tank cover 300 is movably connected to the tank opening 201, and when the tank cover 300 is connected to the tank body 200, it is a sealed connection.

[0065] The rotating device includes a driving motor 400 fixedly arranged on the bottom plate 100, a supporting and rotating assembly 500 for supporting the tank body 200, a first mounting sleeve 600 and a second mounting sleeve 700 fixedly arranged at both ends of the bottom surface of the tank body 200. The supporting and rotating assembly 500 is used to support the tank body 200 and rotate it stably. A runner 800 is arranged on the output shaft of the driving motor 400. The rotating device is a device that rotates the tank body 200, thereby driving the dry mortar in the tank body 200 to stir. The rotation speed of the tank body 200 is 50 - 70 revolutions per minute, and the rotation time is 1 - 5 minutes.

[0066] The first mounting sleeve 600 is a stepped circular ring. The first mounting sleeve 600 includes a tank body connecting part 601 of the first step and a runner connecting part 602 of the second step. The tank body connecting part 601 is sleeved on one end of the tank body 200, the outside of the tank body connecting part 601 is rotatably connected to the two supporting and rotating assemblies 500, and the runner connecting part 602 is rotatably connected to the runner 800.

[0067] The second mounting sleeve 700 is a circular ring sleeve. The second mounting sleeve 700 is fixedly sleeved on the other end of the tank body 200, and the second mounting sleeve 700 is rotatably connected to the other two supporting and rotating assemblies 500.

[0068] The light emitter 900 and the light receiver 1000 are relatively arranged on both sides of the bottom surface of the tank body 200. On the outside of one bottom surface of the tank body 200 is the light emitter 900, and on the outside of the other bottom surface of the tank body 200 is the light receiver 1000. The light receiver 1000 is electrically connected to a photoelectric converter. The light emitted by the light emitter 900 enters the light receiver 1000 through the tank body 200. On the bottom plate 100, a first support 1500 and a second support 1600 are fixedly arranged, which are respectively used to support the light emitter 900 and the light receiver 1000.

[0069] The light emitter 900 and the light receiver 1000 are at the horizontal height position in the upper middle part of the stationary tank body 200, and can detect the dry mortar in a suspended state for a long time; if the light emitter 900 and the light receiver 1000 are at the horizontal height position in the lower middle part of the stationary tank body 200, the deposited part of the dry mortar blocks the path between the light emitter 900 and the light receiver 1000, and the accurate test of the dust suppression performance cannot be achieved.

[0070] The optical transmitter 900, the optical receiver 1000, the optoelectronic converter, and the drive motor 400 are electrically connected to the controller respectively, and the controller is electrically connected to the computer terminal.

[0071] Since the dry mortar is contained in the tank body 200 and the tank body 200 is well sealed, the dry mortar will not come into contact with the optical transmitter 900 and the optical receiver 1000, thus effectively preventing the optical transmitter 900 and the optical receiver 1000 from being contaminated by the dry mortar and ensuring the detection accuracy.

[0072] Through experiments, it is found that the filling amount of the mortar affects the final test results. Excessive or too little filling amount will both result in too little dust flying of the mortar. Through experiments, the optimal filling amount is found to be one-fifth of the volume of the tank body 200.

[0073] Under the condition of simulating actual construction, after the dry mortar is stirred up, the rotation of the tank body 200 is stopped, and the dry mortar freely falls under the action of gravity. The judgment index for quantifying the dust suppression characteristics of the dust suppression dry mortar is based on the amount of dust in the suspended state during the falling process. By irradiating the dry mortar powder with light and analyzing the light intensity received by the optical receiver 1000, the dust suppression effect of the dry mortar can be evaluated conveniently, quickly, and accurately, improving the working efficiency of the test.

[0074] Specifically, at least one baffle 202 is arranged along the circumference inside the tank body 200. In this embodiment, five spaced baffles 202 are arranged. The function of the baffle 202 is to fully stir the dry mortar during the rotation of the tank body 200, break up the caked parts or large particles in the dry mortar, and prevent the measurement results from being deviated due to caking of the dry mortar.

[0075] Specifically, first teeth 603 are arranged along the circumference on the outer surface of the runner connecting part 602, and second teeth 801 are arranged on the runner 800 and are matched with the first teeth 603. The first teeth 603 are meshed with the second teeth 801. When the drive motor 400 operates, it drives the runner 800 to rotate, and then drives the tank body 200 to rotate.

[0076] The support rotating assembly 500 includes a support 501. A pulley 502 is rotatably arranged on the support 501. The pulley 502 is rotatably connected to the outer side of the tank body connecting part 601 of the first mounting sleeve 600 and the outer side of the second mounting sleeve 700 respectively. A pulley placement groove 5011 and a rotating shaft hole 5012 are formed in the upper part of the support 501. A rotating shaft 503 is inserted into the rotating shaft hole 5012, and a pulley 502 is sleeved on the rotating shaft 503. The pulley 502 rotates in the pulley placement groove 5011.

[0077] Further, an annular groove 5021 is formed along the circumference on the outer side of the pulley 502. A first annular protrusion 6011 is provided on the tank body connecting part 601 of the first step of the first mounting sleeve 600, and a second annular protrusion 701 is provided on the outer side of the second mounting sleeve 700. The first annular protrusion 6011 and the second annular protrusion 701 are respectively embedded into the annular grooves 5021 of the two pulleys 502. The pulley 502 plays a role in positioning during installation and limiting during the rotation process of the first mounting sleeve 600 and the second mounting sleeve 700, ensuring the stable rotation of the tank body 200 on the support rotating assembly 500.

[0078] Furthermore, the depth of the annular groove 5021 is consistent with the heights of the first annular protrusion 6011 and the second annular protrusion 701. When the pulley 502 is connected to the first mounting sleeve 600 and the second mounting sleeve 700, the bottom surface of the annular groove 5021 is in contact with the top surfaces of the first annular protrusion 6011 and the second annular protrusion 701, and the outer side surface of the pulley 502 is in contact with the outer side surfaces of the first mounting sleeve 600 and the second mounting sleeve 700, increasing the support area of the pulley 502 for the first mounting sleeve 600 and the second mounting sleeve 700.

[0079] Specifically, the light emitter 900 is a laser LED or an LED, and the light receiver 1000 is a photosensitive triode.

[0080] Working principle:

[0081] Under simulated actual construction conditions, after the dry mortar is stirred up, the dry mortar freely falls under the action of gravity. By testing the amount of dust in a suspended state during the falling process as the judgment index for quantifying the dust suppression characteristics of the dust suppression dry mortar, the dust suppression performance of the dry mortar can be conveniently, quickly, and accurately evaluated, improving the working efficiency of the test.

[0082] During the test, first, the light emitter 900 and the light receiver 1000 are powered on. The light receiver 1000 is electrically connected to the photoelectric converter. The tank body 200 is fixed on the tank body clamp 200, and the intensity value of the light passing through the air inside the tank body 200 is displayed on the computer terminal. Then, the tank cover 300 on the tank body 200 is opened, and the test dry mortar is loaded into the tank body 200. The filling amount of the dry mortar is one-fifth of the volume of the tank body 200. The tank cover 300 is covered, and the tank body 200 filled with dry mortar is placed on the tank body clamp 200. The light emitter 900, the tank body 200, and the light receiver 1000 are collinear. After the tank body 200 rotates for the set time, the tank body 200 is restored to its original position, and the tank body 200 remains stationary after rotation.

[0083] The cooperative use of the optical transmitter 900 and the optical receiver 1000. The optical transmitter 900 generates light rays, and the optical receiver 1000 receives the optical signals that have passed through the tank body 200. According to the Tyndall effect, when light rays pass through the dry mortar powder suspended in the tank body 200, light scattering will occur. By observing whether the light scattering path can be seen, it can be determined whether there is dry mortar powder in a suspended state in the tank body 200, and the light intensity signal obtained by the controller is displayed on the computer side and further analyzed. The light emitted by the optical transmitter 900 passes through the dry mortar in the tank body 200. After the tank body 200 rotates and stops, due to the dry mortar powder being dispersed in the tank body 200 in a short period of time, the light rays are scattered. Observe whether there is an obvious "path" in the tank body 200. If there is a "path", it means that the dry mortar does not have dust suppression performance. On the contrary, it means that the dry mortar has dust suppression performance. The light that has not been scattered is received by the optical receiver 1000, and the optoelectronic converter converts the optical signal received by the optical receiver 1000 into an electrical signal and transmits it to the controller, forming analyzable optical information. The computer side records the numerical change of the light intensity, and evaluates the dust concentration and dust suppression effect of the dry mortar through the change of the light intensity. As Figure 26 shown, the X-axis coordinate can be defined as time, and the Y-axis coordinate can be defined as the light intensity. As time extends, the light intensity changes. The dust suppression effect of the dry mortar is judged according to the time corresponding to the lowest point of the light intensity to the point where the light intensity tends to be flat in the curve. Through the time when the light intensity analyzed on the computer side returns to the initial light intensity, the dust suppression effect of the mortar is classified. The classification is shown in Table 1. The shorter the recovery time, the better the dust suppression effect of the dry mortar:

[0084] Table 1

[0085] Recovery time / min Level 0-1 1 1-2 2 2-3 3 3-4 4 4-5 5 Greater than 5 6

[0086] Example 2:

[0087] On the basis of Example 1, it further includes a first optical fiber 1100 between the optical transmitter 900 and the tank body 200, and a second optical fiber 1200 between the tank body 200 and the optical receiver 1000. Opposite round holes 203 are opened on the bottom surfaces on both sides of the tank body 200. One end of the first optical fiber 1100 is connected to the emission end of the optical transmitter 900, and the other end is arranged in the round hole 203 on the bottom surface of the tank body 200; one end of the second optical fiber 1200 is connected to the receiving end of the optical receiver 1000, and the other end is arranged in the round hole 203 on the other bottom surface of the tank body 200. The first optical fiber 1100 is respectively connected to the optical transmitter 900 and the round hole 203 of the tank body 200 through a connector 1300, and the connector 1300 is a nut locking structure; similarly, the second optical fiber 1200 is respectively connected to the optical receiver 1000 and the round hole 203 of the tank body 200 through a connector 1300.

[0088] Furthermore, the coupling between the optical transmitter 900 and the first optical fiber 1100 is direct coupling or lens coupling. In the direct coupling method, the processed first end face is placed as close as possible to the light-emitting surface of the optical transmitter 900. When the coupling efficiency is adjusted to the highest, the relative positions of the first and the optical transmitter 900 are fixed with an adhesive (or fully metallized packaging). The method of directly coupling the optical transmitter 900 with the first is simple and convenient, but the coupling efficiency is low. Preferably, a lens is placed between the optical transmitter 900 and the first optical fiber 1100 to form lens coupling, which improves the coupling efficiency.

[0089] The first optical fiber 1100 and the second optical fiber 1200 are polymer multimode optical fibers or quartz multimode optical fibers. If polymer multimode optical fibers are used, the fiber diameter can be 0.1 mm to 3 mm, while if quartz multimode optical fibers are used, the diameter is 0.1 mm to 0.5 mm.

[0090] The first optical fiber 1100 and the second optical fiber 1200 serve as the light transmission medium, avoiding the reflection effect of the light by the tank body 200 and also avoiding the light passing through the two bottom surfaces of the tank body 200 attached with dry mortar dust, thus affecting the accuracy of the test results.

[0091] Example 3:

[0092] Based on Example 1, the dry mortar dust suppression performance testing device further includes an opaque outer shell 1400 movably arranged on the upper surface of the bottom plate 100. The outer shell 1400 covers the tank body 200, the tank cover 300, the rotating device, the first bracket 1500, the second bracket 1600, the optical transmitter 900, and the optical receiver 1000 in a closed space. The material of the outer shell 1400 includes light-shielding materials such as steel and light-shielding plastics. The shape of the outer shell 1400 includes but is not limited to rectangles, circles, irregular shapes, etc. The setting of the outer shell 1400 avoids the influence of the external environment on the test process and improves the accuracy of the test results.

[0093] This embodiment provides a testing method for the aforementioned dry mortar dust suppression performance testing device, including the following steps:

[0094] S1. The controller controls the optical transmitter 900 and the optical receiver 1000 to be in the working state. Place the empty tank body 200 with the first mounting sleeve 600 and the second mounting sleeve 700 on the support rotating assembly 500, and the computer terminal displays the intensity value of the light passing through the air inside the tank body 200;

[0095] S2. Open the tank cover 300 on the tank body 200, load the test dry mortar into the tank body 200, and then tighten the tank cover 300 for sealing;

[0096] S3. The controller controls the driving motor 400 to operate, driving the tank body 200 to rotate, stirring the dry mortar in the tank body 200, and the computer terminal displays the numerical change of the light intensity;

[0097] S4. After the tank body 200 reaches the set rotation time or rotation number of turns, the controller controls the driving motor 400 to stop rotating, and the tank body 200 remains stationary. At this time, the dry mortar in the tank body 200 undergoes slow sedimentation, and the computer terminal displays the numerical change of the light intensity;

[0098] S5. Judge the dust suppression effect of the dry mortar according to the recovery time corresponding to the point from the lowest point of the light intensity to the point where the light intensity tends to be flat in the curve on the computer terminal;

[0099] S6. Repeat S1 to S5 to complete parallel tests, take the average value of the recovery time, and analyze the dust suppression performance of the dry mortar in the test.

[0100] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A dry mortar dust suppression performance testing device, characterized in that Comprising: A bottom plate (100); A tank body (200) made of a transparent material, with a tank opening (201) provided on the side of the tank body (200), and a tank cover (300) movably connected to the tank opening (201), and the tank cover (300) is in a sealed connection with the tank body (200) when connected; A rotating device, including a driving motor (400) fixedly arranged on the bottom plate (100), a supporting and rotating assembly (500) for supporting the tank body (200), a first mounting sleeve (600) and a second mounting sleeve (700) fixedly arranged at both ends of the bottom surface of the tank body (200), and the supporting and rotating assembly (500) is used for supporting the tank body (200) and stably rotating, and a runner (800) is arranged on the output shaft of the driving motor (400); The first mounting sleeve (600) is a stepped circular ring, including a tank body connecting part (601) of the first step and a runner connecting part (602) of the second step. The tank body connecting part (601) is sleeved on one end of the tank body (200), the outside of the tank body connecting part (601) is rotatably connected to the two supporting and rotating assemblies (500), and the runner connecting part (602) is rotatably connected to the runner (800); The second mounting sleeve (700) is a circular ring sleeve, fixedly sleeved on the other end of the tank body (200), and the second mounting sleeve (700) is rotatably connected to the other two supporting and rotating assemblies (500); A light emitter (900) and a light receiver (1000), oppositely arranged on both sides of the bottom surface of the tank body (200), and the light emitted by the light emitter (900) enters the light receiver (1000) through the tank body (200), and the light receiver (1000) is electrically connected to a photoelectric converter; The horizontal height position of the middle and upper part of the stationary tank body (200) of the light emitter (900) and the light receiver (1000); The light emitter (900), the light receiver (1000), the photoelectric converter and the driving motor (400) are respectively electrically connected to a controller, and the controller is electrically connected to a computer terminal.

2. The dry mortar dust suppression performance testing device according to claim 1, characterized in that, At least one baffle (202) is arranged along the circumference inside the tank body (200).

3. The dry mortar dust suppression performance testing device according to claim 1, characterized in that The outer surface of the runner connecting part (602) is provided with first teeth (603) along the circumference, and the runner (800) is provided with second teeth (801) matching with the first teeth (603), and the first teeth (603) are meshed with the second teeth (801). When the driving motor (400) operates to drive the runner (800) to rotate, the tank body (200) is driven to rotate.

4. The dry mortar dust suppression performance testing device according to claim 1, characterized in that, The supporting and rotating assembly (500) includes a support (501), and a pulley (502) is rotatably arranged on the support (501), and the pulley (502) is respectively rotatably connected to the outside of the tank body connecting part (601) of the first mounting sleeve (600) and the outside of the second mounting sleeve (700); A pulley placement groove (5011) and a shaft hole (5012) are formed in the upper part of the support (501), a rotating shaft (503) is inserted into the shaft hole (5012), the pulley (502) is sleeved on the rotating shaft (503), and the pulley (502) rotates in the pulley placement groove (5011).

5. The dry mortar dust suppression performance testing device according to claim 4, characterized in that, An annular groove (5021) is formed along the circumference on the outer side of the pulley (502). A first annular protrusion (6011) is provided on the outer side of the tank body connecting portion (601) of the first stepped first mounting sleeve (600), and a second annular protrusion (701) is provided on the outer side of the second mounting sleeve (700). The first annular protrusion (6011) and the second annular protrusion (701) are respectively embedded into the annular grooves (5021) of the two pulleys (502).

6. The dry mortar dust suppression performance testing device according to claim 5, wherein The depth of the annular groove (5021) is consistent with the heights of the first annular protrusion (6011) and the second annular protrusion (701). When the pulley (502) is connected to the first mounting sleeve (600) and the second mounting sleeve (700), the bottom surface of the annular groove (5021) is in contact with the top surfaces of the first annular protrusion (6011) and the second annular protrusion (701), and the outer side surface of the pulley (502) is in contact with the outer side surfaces of the first mounting sleeve (600) and the second mounting sleeve (700).

7. The dry mortar dust suppression performance testing device according to claim 1, characterized in that, It further includes a first optical fiber (1100) between the optical transmitter (900) and the tank body (200), and a second optical fiber (1200) between the tank body (200) and the optical receiver (1000). Opposite round holes (203) are formed on the bottom surfaces on both sides of the tank body (200); One end of the first optical fiber (1100) is connected to the transmitting end of the optical transmitter (900), and the other end is arranged in the round hole (203) on the bottom surface of the tank body (200); one end of the second optical fiber (1200) is connected to the receiving end of the optical receiver (1000), and the other end is arranged in the round hole (203) on the other bottom surface of the tank body (200); The first optical fiber (1100) is connected to the optical transmitter (900) and the round hole (203) of the tank body (200) through a connector (1300) being provided; The second optical fiber (1200) is connected to the optical receiver (1000) and the round hole (203) of the tank body (200) through a connector (1300) being provided.

8. The dry mortar dust suppression performance testing device according to claim 7, characterized in that, The coupling between the optical transmitter (900) and the first optical fiber (1100) is direct coupling or lens coupling.

9. The dry mortar dust suppression performance testing device according to claim 8, wherein The first optical fiber (1100) and the second optical fiber (1200) are polymer multimode optical fibers or quartz multimode optical fibers; When polymer multimode optical fibers are adopted, the fiber diameters of the first optical fiber (1100) and the second optical fiber (1200) can be from 0.1 mm to 3 mm; When quartz multimode optical fibers are adopted, the fiber diameters of the first optical fiber (1100) and the second optical fiber (1200) are from 0.1 mm to 0.5 mm.

10. The dry mortar dust suppression performance testing device according to claim 1, characterized in that, It further includes an opaque outer shell (1400) movably arranged on the upper surface of the bottom plate (100); The outer shell (1400) covers the tank body (200), the tank cover (300), the rotating device, the optical transmitter (900) and the optical receiver (1000) in a closed space.

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