A test device for the apparent density of coarse aggregates

Abstract

This application relates to the field of building material testing, specifically disclosing a coarse aggregate apparent density testing device, comprising: a water-containing container for holding water required for the test; a heat-insulating mechanism disposed within the water-containing container for detecting the water temperature during the test; and a bubble elimination and pore-filling mechanism, which includes a coarse aggregate bearing component and a water flow contact component. This mechanism directs water from the water-containing container to flow into contact with the surface of the coarse aggregate, removing air bubbles adhering to the surface. Simultaneously, as the water flows into the pores, it fills the pores with liquid, thereby accelerating the elimination of air bubbles adhering to the surface of the coarse aggregate and in the pores. Therefore, it effectively solves the problem of the long testing time required for coarse aggregate apparent density in existing technologies, achieving faster testing speed and improved testing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of building material testing, and more particularly to a coarse aggregate apparent density testing device. Background Technology

[0002] The relative density of aggregates is one of the two fundamental parameters used in the design and construction of civil engineering projects, such as highways and structural engineering. These parameters also play an important role in the petroleum and geological exploration fields. Engineers are of great interest in a method and instrument that can accurately and quickly test the relative density of aggregates.

[0003] At the same time, such as Figure 1 As shown, the coarse aggregate 400 has open pores 401 and closed pores 402. During the detection of the apparent density of the coarse aggregate, it is necessary to manually lift the basket repeatedly to remove the air bubbles attached to the surface of the coarse aggregate 400. Then, after standing for 24 hours, water is allowed to enter the open pores 401 to eliminate the air bubbles in the open pores 401. This process takes a long time.

[0004] During the apparent density test of coarse aggregate, the coarse aggregate needs to be soaked and weighed. The test temperature should be between 15℃ and 25℃, and the water temperature change should not exceed 2℃ during the test. Take one sample, place it in a basket, and immerse it in a container of water, with the water level at least 50mm above the sample. After soaking for (24±1) hours, transfer it to a container of water for weighing, and use a lifting and lowering method to remove air bubbles. The sample must not be exposed above the water surface. Each lifting and lowering of the basket takes about 1 second, with a lifting height of 30mm to 50mm.

[0005] Therefore, in the existing coarse aggregate apparent density test process, the water temperature is not easy to control, the test takes a long time, and the lifting and lowering need to be manually operated, which is quite inconvenient. Summary of the Invention

[0006] This application provides a coarse aggregate apparent density testing device, which solves the technical problems of existing coarse aggregate apparent density testing processes, such as difficulty in maintaining water temperature, long testing time, and inconvenience of manual lifting and lowering, thereby accelerating the testing speed and improving testing efficiency.

[0007] This application provides a coarse aggregate apparent density testing device, comprising:

[0008] A water container mechanism used to hold the water required for the experiment;

[0009] A heat preservation mechanism, disposed within the water-containing container mechanism, is used to detect the water temperature during the test; and

[0010] A bubble elimination and pore filling mechanism is used to eliminate air bubbles adhering to the surface of coarse aggregates and to fill the pores of coarse aggregates with water.

[0011] Furthermore, the insulation mechanism includes:

[0012] A temperature sensor is disposed in the water container mechanism and in contact with the water in the water container mechanism, and is used to detect the water temperature in the water container mechanism.

[0013] A temperature control component is disposed at the bottom of the water container mechanism and is used to output heat to the water in the water container mechanism;

[0014] The temperature sensor is connected to the temperature control component, which operates based on the water temperature data provided by the temperature sensor to ensure that the temperature change of the water in the water container does not exceed ℃.

[0015] Furthermore, the bubble elimination and pore filling mechanism includes:

[0016] A coarse aggregate support assembly for holding coarse aggregate, said coarse aggregate support assembly being immersed in water in the water-containing container mechanism during testing; and

[0017] A water flow contact component is connected to the coarse aggregate bearing component and is used to induce water flow in the water container mechanism. The water flow contact component induces the water flow to contact the surface of the coarse aggregate to remove air bubbles attached to the surface of the coarse aggregate. At the same time, the water flow contact component induces the water flow to flow into the open pores of the coarse aggregate so that the open pores are filled with liquid water.

[0018] Furthermore, the coarse aggregate bearing assembly includes a wire basket.

[0019] Furthermore, the water flow contact assembly includes a first fixed frame located on one side of the water container mechanism. A first horizontal bar is connected to the top of the first fixed frame, and the end of the first horizontal bar is located above the water container mechanism. A first lifting cylinder is provided at the end of the first horizontal bar, and the output end of the first lifting cylinder is vertically downward and connected to the coarse aggregate bearing assembly.

[0020] Furthermore, a weighing balance is provided between the first horizontal bar and the coarse aggregate bearing assembly. The weighing balance is equipped with a hook for mounting the coarse aggregate bearing assembly.

[0021] Furthermore, the bubble elimination and pore filling mechanism also includes a water output component, which is disposed in the water container mechanism and has multiple water output ports, which are installed on the coarse aggregate bearing component.

[0022] Furthermore, the water output component includes a first pump and a first conveying pipe. The first pump is disposed in the water holding container mechanism, the water output port is connected to the first conveying pipe, and the first conveying pipe is connected to the first pump.

[0023] Furthermore, the water container mechanism includes a water container base and a water container bucket, with the water container bucket disposed on the water container base.

[0024] The technical solution provided in this application has at least the following technical effects or advantages:

[0025] This invention employs a bubble elimination and pore filling mechanism. This mechanism draws water from the water-containing container to contact the surface of the coarse aggregate, removing air bubbles adhering to the surface. Simultaneously, as the water flows into the pores, it fills the pores with liquid, thereby accelerating the elimination of air bubbles adhering to the surface of the coarse aggregate and in the pores. Therefore, it effectively solves the problem of the long testing time required for the apparent density test of coarse aggregate in the prior art, achieving faster testing speed and improved testing efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this coarse aggregate;

[0027] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0028] Figure 3 This is a schematic diagram of the insulation mechanism in Embodiment 1 of this application;

[0029] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this application;

[0030] Figure 5 This is a schematic diagram of the water flow contact component in Embodiment 2 of this application;

[0031] Figure 6 This is a schematic diagram of the overall structure of Embodiment 3 of this application;

[0032] Figure 7 This is a schematic diagram of the water flow contact component in Embodiment 3 of this application;

[0033] Figure 8 This is a structural schematic diagram of Embodiment 3 of this application from another angle;

[0034] Figure 9 This is a schematic diagram of the overall structure of Embodiment 4 of this application;

[0035] Figure 10This is a structural schematic diagram of Embodiment 4 of this application from another angle;

[0036] Figure 11 This is a schematic diagram of the overall structure of Embodiment 5 of this application;

[0037] Figure 12 This is a schematic diagram of the water-holding container mechanism in Embodiment 5 of this application;

[0038] Figure 13 This is a schematic diagram of the bubble elimination and pore filling mechanism in Embodiment 5 of this application;

[0039] Figure 14 This is a schematic diagram of the coarse aggregate bearing assembly in Embodiment 5 of this application;

[0040] Figure 15 This is a schematic diagram of the water flow contact component in Embodiment 5 of this application;

[0041] Figure 16 This is a schematic diagram of the brush assembly in Embodiment 5 of this application;

[0042] Figure 17 This is a schematic diagram of the water flow contact component from another angle in Embodiment 5 of this application;

[0043] Figure 18 This is a schematic diagram of the water flow impact steering component in Embodiment 5 of this application;

[0044] Figure 19 Examples of this application Figure 18 Enlarged schematic diagram of the structure at point A in the middle.

[0045] In the diagram: 1. Water container mechanism; 2. Insulation mechanism; 3. Air bubble elimination and pore filling mechanism; 4. Weighing balance; 5. Hook;

[0046] 101. Water container base; 102. Water container bucket; 103. Hanging rod;

[0047] 201. Temperature sensor; 202. Temperature control component;

[0048] 31. Coarse aggregate bearing assembly; 32. Water flow contact assembly; 33. Brush assembly; 34. Water flow impact deflection assembly; 35. Water flow output assembly;

[0049] 311. Wire basket; 312. Loading net cylinder; 313. Fixed circular plate; 314. Rotating shaft; 315. Loading base; 316. Loading plate; 317. Loading hole; 318. Loading pipe;

[0050] 321. First fixed frame; 322. First horizontal bar; 323. First lifting cylinder; 324. Second fixed frame; 325. First mounting plate; 326. Vertical bar; 327. Rotating bracket; 328. Rotating motor; 329. Second lifting cylinder; 3210. Third lifting cylinder; 3211. Lifting plate; 3212. Lifting column; 3213. Loading tray;

[0051] 331. Second mounting plate; 332. Third mounting plate; 333. Fourth lifting cylinder; 334. Fixing hole; 335. Rotating rod; 336. Brush; 337. Drive gear; 338. Drive motor; 339. Rod body gear;

[0052] 341. Second water pump; 342. Second conveying pipeline; 343. Output nozzle;

[0053] 351. Water outlet; 352. First pump; 353. First conveying pipeline. Detailed Implementation

[0054] This application discloses a coarse aggregate apparent density testing device. By setting up an air bubble elimination and open pore filling mechanism 3, the air bubble elimination and open pore filling mechanism 3 induces water in the water container mechanism 1 to flow to contact the surface of the coarse aggregate 400, so as to remove the air bubbles attached to the surface of the coarse aggregate 400. At the same time, when the water flows to the open pores 401, it can fill the open pores 401 with liquid water, thereby accelerating the elimination of air bubbles attached to the surface of the coarse aggregate 400 and in the open pores 401. Therefore, it effectively solves the problem that the coarse aggregate apparent density testing process requires a long time in the prior art, and realizes the speed of testing and improves the efficiency of testing.

[0055] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0056] Example 1

[0057] Reference Figure 2 and Figure 3 This embodiment provides a coarse aggregate apparent density testing device, including a water container mechanism 1, a heat preservation mechanism 2, and an air bubble elimination and pore filling mechanism 3. The water container mechanism 1 is used to hold the water required for the test, including a water container base 101 and a water container bucket 102. The water container bucket 102 is set on the water container base 101. The heat preservation mechanism 2 is set in the water container mechanism 1 and is used to detect the water temperature during the test. The air bubble elimination and pore filling mechanism 3 is used to eliminate air bubbles attached to the surface of the coarse aggregate and to fill the pores of the coarse aggregate with water.

[0058] Specifically, the heat preservation mechanism 2 includes a temperature sensor 201 and a temperature control component 202. The temperature sensor 201 is installed in the water container mechanism 1 and is in contact with the water in the water container mechanism 1. It is used to detect the water temperature in the water container mechanism 1. The temperature control component 202 is installed at the bottom of the water container mechanism 1. It is used to output heat to the water in the water container mechanism 1. The temperature sensor 201 and the temperature control component 202 are connected. The temperature control component 202 works according to the water temperature data provided by the temperature sensor 201 to ensure that the temperature change of the water in the water container mechanism 1 does not exceed 2°C.

[0059] It should be noted that in this embodiment, the temperature control component 202 can be a heating resistance wire, which generates heat after being energized to heat the water in the water-holding container 1. Combined with the real-time monitoring of the water temperature by the temperature sensor 201, the water temperature variation is kept below 2°C. Considering the different water temperature variation patterns in winter and summer, the temperature control component 202 can also be a semiconductor structure with a heating end and a cooling end. In summer, when the water temperature is higher than 25°C, the cooling end of the semiconductor structure is located in the water-holding container 1, absorbing heat from the water and lowering the water temperature to 15°C-25°C, with the water temperature variation not exceeding 2°C during the test. In winter, when the water temperature is higher than 15°C, the heating end of the semiconductor structure is located in the water-holding container 1, releasing heat into the water and raising the water temperature to 15°C-25°C, with the water temperature variation not exceeding 2°C during the test, thus meeting the test requirements.

[0060] Specifically, the bubble elimination and pore filling mechanism 3 includes a coarse aggregate carrying component 31 and a water flow contact component 32. The coarse aggregate carrying component 31 is used to hold coarse aggregate. During the test, the coarse aggregate carrying component 31 is immersed in the water in the water container mechanism 1. The coarse aggregate carrying component 31 includes a basket 311. The water flow contact component 32 is connected to the coarse aggregate carrying component 31 and is used to induce the water flow in the water container mechanism 1. The water flow contact component 32 induces the water flow to contact the surface of the coarse aggregate to remove the bubbles attached to the surface of the coarse aggregate. At the same time, the water flow contact component 32 induces the water flow to flow into the pores of the coarse aggregate so that the pores are filled with liquid water.

[0061] Furthermore, the water flow contact component 32 includes a first fixing frame 321, which is located on one side of the water container mechanism 1. A first horizontal bar 322 is connected to the top of the first fixing frame 321. The end of the first horizontal bar 322 is located above the water container mechanism 1. A first lifting cylinder 323 is provided at the end of the first horizontal bar 322. The output end of the first lifting cylinder 323 is vertically downward and connected to the coarse aggregate bearing component 31, or more specifically, to the basket 311.

[0062] When the output end of the first lifting cylinder 323 extends or retracts, it can drive the basket 311 to move up and down, meeting the requirement of 3-5cm up and down movement in the specification. At the same time, this process can be completed automatically to simplify operation.

[0063] A weighing balance 4 is provided between the first horizontal bar 322 and the coarse aggregate bearing component 31. The weighing balance 4 is equipped with a hook 5, which is used to hang the coarse aggregate bearing component 31. The side of the basket 311 is provided with a hanging rod 103 corresponding to the hook 5.

[0064] The bubble elimination and pore filling mechanism 3 also includes a water output component 35, which is disposed in the water container mechanism 1. The water output component 35 has multiple water output ports 351, which are installed on the coarse aggregate bearing component 31. The water output component 35 includes a first pump 352 and a first conveying pipe 353. The first pump 352 is disposed in the water container mechanism 1, and the water output ports 351 are connected to the first conveying pipe 353. The first conveying pipe 353 is connected to the first pump 352.

[0065] This embodiment uses a heat preservation mechanism 2 to detect water temperature and a temperature control component 202 to heat and maintain the water temperature, ensuring that the water temperature change does not exceed 2°C during the test. Simultaneously, a first lifting cylinder 323 is provided; when its output end extends or retracts, it drives the basket 311 to rise and fall. During the test, a sample is placed in the basket 311 and immersed below the water surface in the water container 102. The first lifting cylinder 323 continuously reciprocates, with each rise and fall lasting approximately 1 second and a height of 30mm to 50mm, thus eliminating the need for manual operation and simplifying the process.

[0066] After the air bubbles are eliminated, lower the hook 5 and connect the hook 5 to the hanging rod 103. The weighing balance 4 will then weigh the underwater mass of the net basket 311 to complete the weighing operation.

[0067] Example 2

[0068] Reference Figure 4 and Figure 5 This embodiment provides a coarse aggregate apparent density testing device, including a water container mechanism 1, a heat preservation mechanism 2, and an air bubble elimination and pore filling mechanism 3. The water container mechanism 1 is used to hold the water required for the test. The heat preservation mechanism 2 is disposed in the water container mechanism 1 and is used to detect the water temperature during the test. The air bubble elimination and pore filling mechanism 3 is used to eliminate air bubbles attached to the surface of the coarse aggregate 400 and to fill the pores of the coarse aggregate 400 with water.

[0069] In the existing coarse aggregate apparent density test (basket method), the coarse aggregate needs to be washed first. Each aggregate sample is immersed in water and stirred appropriately to carefully wash away the dust and stone powder attached to the surface of the aggregate. It is rinsed several times until the water is completely clear. No aggregate particles should be lost during the washing process.

[0070] After cleaning, take a sample and place it in a clean enamel dish. Pour in clean water, ensuring the water level is at least 20 mm above the sample. Gently stir the stone to allow any air bubbles to escape. Keep it soaked in water at room temperature for 24 hours.

[0071] like Figure 1 As shown, the coarse aggregate 400 has open pores 401 and closed pores 402. The closed pores 401 refer to the hollow cavities inside the coarse aggregate 400, while the open pores 401 refer to a portion of the coarse aggregate 400 that are connected to the outside air. After the coarse aggregate 400 is immersed in water, some air bubbles will adhere to its surface. These air bubbles need to be eliminated before the experiment. Simultaneously, some air will remain in the open pores 401 after the coarse aggregate 400 is immersed in water. Under air pressure, water cannot enter the open pores 401, thus air bubbles also exist in the open pores 401. The existing experimental procedure involves immersing the coarse aggregate 400 in water for 24 hours to allow water to enter the open pores 401 and eliminate the air bubbles. Thus, after air bubble removal and 24-hour immersion, the coarse aggregate 400 is ready for the experiment.

[0072] Specifically, refer to Figure 4 and Figure 5 The water container mechanism 1 includes a water container base 101 and a water container bucket 102, with the water container bucket 102 disposed on the water container base 101.

[0073] Reference Figure 4 and Figure 5 The insulation mechanism 2 includes a temperature sensor, which is installed on the inner wall of the water container 102.

[0074] Reference Figures 4 to 5 The bubble elimination and pore filling mechanism 3 includes a coarse aggregate carrying component 31 and a water flow contact component 32. The coarse aggregate carrying component 31 is used to hold coarse aggregate 400. During the test, the coarse aggregate carrying component 31 is immersed in the water in the water container mechanism 1. The water flow contact component 32 is connected to the coarse aggregate carrying component 31 and is used to induce the water flow in the water container mechanism 1. The water flow contact component 32 induces the water flow to contact the surface of the coarse aggregate 400 to remove the bubbles attached to the surface of the coarse aggregate 400. At the same time, the water flow contact component 32 induces the water flow to flow into the pores 401 so that the pores 401 are filled with liquid water.

[0075] Specifically, such as Figure 5 As shown, in this embodiment, the coarse aggregate bearing component 31 includes a wire basket 311;

[0076] The water flow contact component 32 includes a first fixed frame 321, which is located on one side of the water container mechanism 1. A first horizontal bar 322 is connected to the top of the first fixed frame 321. The end of the first horizontal bar 322 is located above the water container mechanism 1. A first lifting cylinder 323 is provided at the end of the first horizontal bar 322. The output end of the first lifting cylinder 323 is vertically downward and connected to the basket 311.

[0077] In this embodiment, the basket 311 is used to load coarse aggregate 400. After the coarse aggregate 400 is loaded, the output end of the first lifting cylinder 232 extends, driving the basket 311 to move downward, so that the basket 311 and the coarse aggregate 400 loaded therein are immersed in water. Then the output end of the first lifting cylinder 232 extends and retracts repeatedly, so that the basket 311 and the coarse aggregate 400 loaded therein move up and down below the liquid surface, so that the water and the coarse aggregate 400 move relative to each other continuously, eliminating air bubbles attached to the surface of the coarse aggregate 400, and at the same time accelerating the water flow to the opening pore 401, thereby eliminating air bubbles in the opening pore 401.

[0078] In this embodiment, a structure for weighing the coarse aggregate 400 (not shown in the figure) is also included. This weighing structure is the same as the weighing balance and hook in Embodiment 1, with a hanging basket connected below the hook. When weighing is required, the coarse aggregate 400 is taken out of the mesh basket 311, placed in the hanging basket, and then weighed by the weighing balance.

[0079] The above weighing process must be completed underwater.

[0080] Example 3

[0081] Reference Figures 6 to 8 This embodiment provides a coarse aggregate apparent density testing device, including a water container mechanism 1, a heat preservation mechanism 2, and an air bubble elimination and pore filling mechanism 3. The water container mechanism 1 is used to hold the water required for the test. The heat preservation mechanism 2 is disposed in the water container mechanism 1 and is used to detect the water temperature during the test. The air bubble elimination and pore filling mechanism 3 is used to eliminate air bubbles attached to the surface of the coarse aggregate 400 and to fill the pores of the coarse aggregate 400 with water.

[0082] Specifically, refer to Figures 6 to 8 The water container mechanism 1 includes a water container base 101 and a water container bucket 102, with the water container bucket 102 disposed on the water container base 101.

[0083] Reference Figures 6 to 8The insulation mechanism 2 includes a temperature sensor, which is installed on the inner wall of the water container 102.

[0084] Reference Figures 6 to 8 The bubble elimination and pore filling mechanism 3 includes a coarse aggregate carrying component 31 and a water flow contact component 32. The coarse aggregate carrying component 31 is used to hold coarse aggregate 400. During the test, the coarse aggregate carrying component 31 is immersed in the water in the water container mechanism 1. The water flow contact component 32 is connected to the coarse aggregate carrying component 31 and is used to induce the water flow in the water container mechanism 1. The water flow contact component 32 induces the water flow to contact the surface of the coarse aggregate 400 to remove the bubbles attached to the surface of the coarse aggregate 400. At the same time, the water flow contact component 32 induces the water flow to flow into the pores 401 so that the pores 401 are filled with liquid water.

[0085] Specifically, such as Figure 7 As shown, in this embodiment, the coarse aggregate carrying component 31 includes a cylindrical carrying mesh cylinder 312, and fixed circular plates 313 are provided at both ends of the carrying mesh cylinder 312.

[0086] The water flow contact assembly 32 includes a second fixing frame 324 disposed on one side of the water container mechanism 1. A first mounting plate 325 is connected to the top of the second fixing frame 324, and a vertical rod 326 is connected to the lower part of the first mounting plate 325. The lower end of the vertical rod 326 extends into the water container mechanism 1.

[0087] The lower end of the vertical rod 326 is connected to a rotating bracket 327. The rotating bracket 327 is horizontally set and the load net cylinder 312 is set in the rotating bracket 327 through a bearing. A rotating motor 328 is set on the first mounting plate 325. A rotating shaft 314 is set at the outer center of one of the fixed circular plates 313. The output shaft of the rotating motor 328 is connected to the rotating shaft 314.

[0088] In this embodiment, the loading mesh cylinder 312 is used to load coarse aggregate 400. After the coarse aggregate 400 is loaded, clean water is injected into the water container mechanism 1 so that the clean water covers the loading mesh cylinder 312. Then, the motor 328 is turned to drive the fixed circular plate 313 and the loading mesh cylinder 312 to rotate, so that the coarse aggregate 400 rolls in the loading mesh cylinder 312, so that the water and the coarse aggregate 400 move relative to each other continuously, eliminating the air bubbles attached to the surface of the coarse aggregate 400. At the same time, the water flow is accelerated to the opening pore 401, thereby eliminating the air bubbles in the opening pore 401.

[0089] In this embodiment, a structure for weighing the coarse aggregate 400 (not shown in the figure) is also included. This weighing structure is the same as the weighing balance and hook in Embodiment 1, with a hanging basket connected below the hook. When weighing is required, the coarse aggregate 400 is taken out of the mesh basket 311, placed in the hanging basket, and then weighed by the weighing balance.

[0090] The above weighing process must be completed underwater.

[0091] Example 4

[0092] Reference Figure 9 and Figure 10 This embodiment is basically the same as embodiment three. Based on embodiment three, the water flow contact component 32 further includes a second lifting cylinder 329. The second lifting cylinder 329 is connected between the first mounting plate 325 and the vertical rod 326. The output end of the second lifting cylinder 329 is vertically downward and connected to the vertical rod 326.

[0093] In this embodiment, the loading screen 312 is used to load coarse aggregate 400. After the coarse aggregate 400 is loaded, the output end of the second lifting cylinder 329 extends downward, pushing the vertical rod 326 and the loading screen 312 downward, so that the loading screen 312 and the coarse aggregate 400 loaded therein are immersed below the liquid surface. Then, the rotating motor 328 works, driving the fixed circular plate 313 and the loading screen 312 to rotate, so that the coarse aggregate 400 rolls in the loading screen 312, so that the water and the coarse aggregate 400 move relative to each other continuously, eliminating the air bubbles attached to the surface of the coarse aggregate 400, and at the same time accelerating the water flow to the opening pore 401, thereby eliminating the air bubbles in the opening pore 401.

[0094] Compared to Embodiment 3, in this embodiment, the coarse aggregate 400 is moved down and immersed in the liquid by the second lifting cylinder 329, so that when loading the coarse aggregate 400, the loading net cylinder 312 is located above the water container mechanism 1, which makes it more convenient to load the coarse aggregate 400.

[0095] In Embodiment 3, the angle and orientation of the coarse aggregate 400 within the carrying net cylinder 312 change little, almost without change. When the carrying net cylinder 312 rises, the upper surface of the coarse aggregate 400 is directly impacted by the water flow, the sides are less impacted, and the lower surface is even less impacted. Therefore, as the carrying net cylinder 312 rises, the bubble elimination effect on the upper, sides, and lower surfaces of the coarse aggregate 400 decreases sequentially. Conversely, when the carrying net cylinder 312 moves downwards, the lower surface of the coarse aggregate 400 is directly impacted by the water flow, the sides are less impacted, and the upper surface is even less impacted. Therefore, as the carrying net cylinder 312 moves downwards, the bubble elimination effect on the lower, sides, and upper surfaces of the coarse aggregate 400 decreases sequentially. Thus, in this embodiment, the bubble elimination efficiency of the water flow contact component 32 on different parts of the surface of the coarse aggregate 400 is not consistent.

[0096] In this embodiment, the coarse aggregate 400 inside the rotating mesh cylinder 312 continuously tumbles due to its own rotation, resulting in relative movement with the water flow. During the tumbling process, the angle of the coarse aggregate 400 in space constantly changes, as does the angle between it and the water flow direction. This ensures that all surfaces of the coarse aggregate 400 receive direct impact from the water flow, resulting in a more uniform bubble elimination efficiency of the water flow contact component 32 on the surface of the coarse aggregate 400.

[0097] However, the above implementation method will cause continuous friction and collision between coarse aggregates 400 and between coarse aggregates 400 and the carrying net cylinder 312, which may cause wear or breakage on the surface of coarse aggregates 400. After the coarse aggregates 400 break, it is very likely that its closed pores 402 will become open pores 401, affecting the drainage volume of coarse aggregates 400, thereby affecting the accuracy of the test.

[0098] Thus, in another preferred embodiment, the loading net cylinder 312 is used to load coarse aggregate 400. After the coarse aggregate 400 is loaded, the output end of the second lifting cylinder 329 extends downward, pushing the vertical rod 326 and the loading net cylinder 312 downward, so that the loading net cylinder 312 and the coarse aggregate 400 loaded therein are immersed below the liquid surface. The output end of the first lifting cylinder 232 extends and retracts repeatedly, so that the net basket 311 and the coarse aggregate 400 loaded therein move up and down below the liquid surface, so that the water and the coarse aggregate 400 move relative to each other continuously, eliminating the air bubbles attached to the surface of the coarse aggregate 400, and at the same time accelerating the water flow to the opening pore 401, thereby eliminating the air bubbles in the opening pore 401.

[0099] During the above process, the rotating motor 328 operates intermittently, driving the fixed circular plate 313 and the carrying mesh cylinder 312 to rotate, causing the coarse aggregate 400 to tumble in the carrying mesh cylinder 312. This adjusts the orientation and angle of the coarse aggregate 400 so that all surfaces of the coarse aggregate 400 can receive the direct impact of the water flow, thereby making the airflow contact component 32 more efficient at eliminating air bubbles on the surface of the coarse aggregate 400. In this embodiment, the waterflow contact component 32 can eliminate air bubbles on the surface of the coarse aggregate 400 more evenly, while preventing the coarse aggregate 400 from colliding and breaking.

[0100] In this embodiment, a structure for weighing the coarse aggregate 400 (not shown in the figure) is also included. This weighing structure is the same as the weighing balance and hook in Embodiment 1, with a hanging basket connected below the hook. When weighing is required, the coarse aggregate 400 is taken out of the mesh basket 311, placed in the hanging basket, and then weighed by the weighing balance.

[0101] The above weighing process must be completed underwater.

[0102] Example 5

[0103] Reference Figures 11 to 19 Based on Embodiment 4, the coarse aggregate bearing component 31 includes a load base 315, which is disposed in the water container mechanism 1. A load plate 316 is provided above the load base 315 via a bracket. A plurality of load holes 317 are provided through the load plate 316, and a load pipe 318 is connected to the lower part of the load holes 317.

[0104] The water flow contact component 32 includes a third lifting cylinder 3210 disposed between the base 315 and the plate 316. The output end of the third lifting cylinder 3210 is vertically upward and connected to a lifting plate 3211. The lifting plate 3211 is provided with a plurality of lifting columns 3212, which correspond one-to-one with a plurality of loading holes 317. The upper end of the lifting column 3212 extends into the loading pipe 318 connected to the corresponding loading hole 317. The top of the lifting column 3212 is connected to a loading tray 3213.

[0105] In this embodiment, when the output end of the third lifting cylinder 3210 is in the retracted state, the loading plate 3213 is located at the bottom of the loading pipe 318. The loading pipe 318 and the loading plate 3213 together form a semi-closed structure, which is used to load a single coarse aggregate 400. Multiple coarse aggregates 400 are sequentially placed into the loading pipe 318. After the coarse aggregates 400 are loaded, the output end of the third lifting cylinder 3210 reciprocates by extending and retracting, pushing the lifting plate 3211, the lifting column 3212, the loading plate 3213, and the loading plate 3213 to rise and fall reciprocally. This causes the coarse aggregates 400 to move relative to the water, eliminating air bubbles attached to the surface of the coarse aggregates 400, and simultaneously accelerating the water flow to the opening pores 401, thereby eliminating air bubbles in the opening pores 401.

[0106] Furthermore, if Figure 13 , Figure 14 and Figure 16 As shown, in this embodiment, the bubble elimination and pore filling mechanism 3 also includes a brush assembly 33. The brush assembly 33 is used to sweep the surface of the coarse aggregate 400 to eliminate the bubbles attached to the surface of the coarse aggregate 400. At the same time, the brush assembly 33 is used to drive the water flow to the pores 401 through the brush so that the pores 401 are filled with water.

[0107] Specifically, the brush assembly 33 includes a second mounting plate 331 and a third mounting plate 332. The second mounting plate 331 is mounted above the carrying plate 316 via a bracket. A fourth lifting cylinder 333 is mounted on the second mounting plate 331. The output end of the fourth lifting cylinder 333 is vertically downward and perpendicularly connected to the third mounting plate 332. A plurality of fixing holes 334 are provided through the third mounting plate 332. The plurality of fixing holes 334 correspond one-to-one with a plurality of carrying holes 317. A rotating rod 335 is provided through the fixing holes 334 via a bearing. A brush 336 is provided at the lower end of the rotating rod 335.

[0108] The third mounting plate 332 is provided with a drive gear 337 and a drive motor 338. The drive motor 338 is connected to the drive gear 337. The upper end of the rotating rod 335 is provided with a rod body gear 339. The rod body gear 339 is connected to the drive gear 337 through a synchronous belt.

[0109] In the brush assembly 33 of this embodiment, before loading the coarse aggregate 400, the output end of the fourth lifting cylinder 333 is in a retracted state. In this state, the brush 336 is located above the carrier plate 316, and there is a gap between the brush 336 and the carrier plate 316 for the transfer operation of the coarse aggregate 400, thereby facilitating the loading of the coarse aggregate 400. After the coarse aggregate 400 is loaded, the output end of the fourth lifting cylinder 333 extends downward, pushing the third mounting plate 332, the rotating rod 335 and the brush 336 downward, and finally the lower end of the brush 336 extends to the top surface of the carrying pipe 318.

[0110] When the third lifting cylinder 3210 moves the coarse aggregate 400 to the top surface of the carrying pipe 318, the lower end of the brush contacts the coarse aggregate 400. Then, the drive motor 338 drives the drive gear 337 to rotate. The drive gear 337 drives the rod gear 339 to rotate through the synchronous belt, which in turn causes the rotating rod 335 to rotate, that is, to make the brush 336 rotate. The bristles of the brush 336 directly contact the surface of the coarse aggregate 400. When the bristles move, they can sweep off the air bubbles attached to the surface of the coarse aggregate 400. At the same time, the bristles also directly extend into the opening orifice 401, driving the water flow into the opening orifice 401, so that the water fills the opening orifice 401 and eliminates the air bubbles in the opening orifice 401.

[0111] Furthermore, in a preferred embodiment, the output end of the third lifting cylinder 3210 extends to push the lifting plate 3211, lifting column 3212, loading plate 3213 and loading plate 3213 upward, so that the coarse aggregate 400 moves upward. Then, the output end of the third lifting cylinder 3210 quickly retracts, driving the lifting plate 3211, lifting column 3212, loading plate 3213 and loading plate 3213 to move downward quickly. The downward speed is greater than the speed at which the coarse aggregate 400 falls freely in the water, so that the coarse aggregate 400 is in a "suspended" state during the falling process.

[0112] Based on the above implementation methods, further, such as Figure 13 , Figure 14 , Figure 15 , Figure 17 , Figure 18 and Figure 19 As shown, the bubble elimination and pore filling mechanism 3 also includes a water flow impact steering component 34. The water flow impact steering component 34 is disposed in the loading pipe 318 and is used to output water flow into the inner cavity of the loading pipe 318 and impact the coarse aggregate 400 during the falling process, so as to turn the coarse aggregate 400.

[0113] Specifically, the water flow impact steering assembly 34 includes a second pump 341, a second conveying pipe 342, and several output nozzles 343. The second pump 341 is mounted on the second mounting plate 331, and the output nozzles 343 are fixed in the inner wall of the carrying pipe 318. One end of the second conveying pipe 342 is connected to the second pump 341, and the other end passes through the carrying pipe 318 and is connected to the output nozzles 343.

[0114] In this embodiment, the water flow impact steering component 34 operates during the downward movement of the coarse aggregate 400. Since the coarse aggregate 400 is in a "suspended" state when it moves downward, its orientation angle is very easy to change when it is impacted by the lateral water flow, causing its posture to change when it falls back onto the carrier plate 3213. As a result, the contact surface with the brush 336 changes when it moves upward again, allowing the brush component 33 to contact all surfaces of the coarse aggregate 400, uniformly remove air bubbles from all surfaces of the coarse aggregate 400, and fill the open pores on the surface.

[0115] Compared to Example 4, in this embodiment, there will be no violent collisions between coarse aggregates 400 or between coarse aggregates 400 and the carrier structure, thus avoiding damage or breakage of coarse aggregates 400 and preventing the formation of new open pores 401, thereby ensuring the accuracy of the test.

[0116] In this embodiment, a structure for weighing the coarse aggregate 400 (not shown in the figure) is also included. This weighing structure is the same as the weighing balance and hook in Embodiment 1, with a hanging basket connected below the hook. When weighing is required, the coarse aggregate 400 is taken out of the mesh basket 311, placed in the hanging basket, and then weighed by the weighing balance.

[0117] The above weighing process must be completed underwater.

[0118] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0119] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A device for testing the apparent density of coarse aggregates, characterized in that, include: Water container mechanism (1), used to hold the water required for the experiment; A heat preservation mechanism (2) is provided in the water container mechanism (1) for detecting the water temperature during the test; as well as A bubble elimination and pore filling mechanism (3) is used to eliminate bubbles adhering to the surface of coarse aggregates and to fill the pores of coarse aggregates with water. The bubble elimination and pore filling mechanism (3) includes: A coarse aggregate support assembly (31) is used to hold coarse aggregate, and the coarse aggregate support assembly (31) is immersed in the water of the water-holding container mechanism (1) during the test; and Water flow contact component (32), which is connected to the coarse aggregate bearing component (31), is used to induce the water flow in the water container mechanism (1). The water flow contact component (32) induces the water flow to contact the surface of the coarse aggregate to remove the air bubbles attached to the surface of the coarse aggregate. At the same time, the water flow contact component (32) induces the water flow to flow into the opening pores of the coarse aggregate so that the opening pores are filled with liquid water.

2. The coarse aggregate apparent density testing device as described in claim 1, characterized in that, The heat preservation mechanism (2) includes: A temperature sensor (201) is installed in the water container mechanism (1) and in contact with the water in the water container mechanism (1) for detecting the water temperature in the water container mechanism (1); Temperature control component (202), the temperature control component (202) is disposed at the bottom of the water container mechanism (1) and is used to output heat to the water in the water container mechanism (1); The temperature sensor (201) is connected to the temperature control component (202). The temperature control component (202) works according to the water temperature data provided by the temperature sensor (201) so that the temperature change of the water in the water container mechanism (1) does not exceed 2°C.

3. The coarse aggregate apparent density testing device as described in claim 1, characterized in that, The coarse aggregate bearing assembly (31) includes a wire basket (311).

4. The coarse aggregate apparent density testing device as described in claim 1, characterized in that, The water flow contact assembly (32) includes a first fixed frame (321), which is located on one side of the water container mechanism (1). A first horizontal bar (322) is connected to the top of the first fixed frame (321), and the end of the first horizontal bar (322) is located above the water container mechanism (1). A first lifting cylinder (323) is provided at the end of the first horizontal bar (322), and the output end of the first lifting cylinder (323) is vertically downward and connected to the coarse aggregate bearing assembly (31).

5. The coarse aggregate apparent density testing device as described in claim 4, characterized in that, A weighing balance (4) is provided between the first horizontal bar (322) and the coarse aggregate bearing assembly (31). A hook (5) is provided on the weighing balance (4) and the hook (5) is used to hang the coarse aggregate bearing assembly (31).

6. The coarse aggregate apparent density testing device as described in claim 1, characterized in that, The bubble elimination and pore filling mechanism (3) further includes a water output component (35), which is disposed in the water container mechanism (1). The water output component (35) has multiple water output ports (351), which are installed on the coarse aggregate bearing component (31).

7. The coarse aggregate apparent density testing device as described in claim 6, characterized in that, The water output component (35) includes a first pump (352) and a first conveying pipe (353). The first pump (352) is disposed in the water holding container mechanism (1). The water output port (351) is connected to the first conveying pipe (353), and the first conveying pipe (353) is connected to the first pump (352).

8. The coarse aggregate apparent density testing device as described in claim 1, characterized in that, The water container mechanism (1) includes a water container base (101) and a water container bucket (102), with the water container bucket (102) disposed on the water container base (101).

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