Bulk density detection equipment
By designing a combination of screening and mixing tanks, the automatic grading, screening, and mixing of high-alumina bauxite powder is achieved, solving the problem of cumbersome testing processes in traditional equipment, improving testing efficiency and accuracy, and meeting the needs of industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING DAMEI NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional bulk density testing equipment requires manual sieving pretreatment when testing high-alumina bauxite powder, and cannot simultaneously complete particle sieving, resulting in a cumbersome and complicated testing process that is difficult to meet the needs of rapid testing and quality control in industrial production.
A bulk density testing device was designed, comprising a screening bucket, a storage rack, a collection hood, and a mixing bucket. It achieves automatic grading and screening of materials through a primary and secondary screen, and achieves rapid mixing and collection of materials through the coordinated operation of the stirring blades and stirring rods.
It achieves efficient particle classification and collection, significantly improves the accuracy and reliability of test results, shortens sample preparation time, and meets the high-efficiency testing needs of industrial production.
Smart Images
Figure CN224202863U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-alumina bauxite testing technology, and in particular to a bulk density testing device. Background Technology
[0002] In the field of high-alumina bauxite processing, bulk density testing equipment is mainly used in the quality inspection stage to accurately determine the bulk density of high-alumina bauxite raw materials or products, providing key data support for production quality control. For high-alumina bauxite finished products, such as refractory bricks and ceramics, bulk density is an important quality indicator. The testing equipment measures the bulk density of the finished product by simulating the stacking state under actual use scenarios, and evaluates whether the product meets the standards.
[0003] When testing the bulk density of powdered high-alumina bauxite, different particle sizes can affect the packing pattern and porosity, thus affecting the measurement results. In order to make the test results comparable and accurate, certain regulations or restrictions are usually imposed on particle size during bulk density testing. This can reduce the impact of particle size differences on the bulk density test results and ensure that the test results can truly reflect the packing characteristics of the material.
[0004] Traditional bulk density testing equipment has several limitations when applied to the testing of high-alumina bauxite powder. First, it requires manual pre-treatment by sieving the powder before testing, and particle sieving cannot be completed simultaneously during the testing process. Second, since the packing characteristics of high-alumina bauxite powder with different particle sizes vary, multiple measurements must be performed for each sieved particle size to ensure the accuracy of the test results. However, existing equipment does not have the function of sieving and processing multi-size samples and can only sieve and process samples one by one. This not only makes the testing process cumbersome and complex but also significantly reduces the testing efficiency, making it difficult to meet the needs of rapid testing and quality control in industrial production. To address the above problems, this application proposes a bulk density testing device. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a bulk density detection device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a bulk density testing device, comprising: a base, wherein the base is configured as a rectangular plate structure;
[0007] The support frame is fixedly installed on top of the base in a U-shape;
[0008] The screening barrel is located in the upper part between the support frames. Inside the screening barrel, a primary screen and a secondary screen are installed from top to bottom. The mesh diameter of the primary screen is larger than that of the secondary screen. A first feed pipe connected to the inside of the screening barrel is fixedly installed on the right side of the screening barrel, and a second feed pipe connected to the inside of the screening barrel is fixedly installed on the left side of the screening barrel.
[0009] A shelf is installed between the support frames and located below the screening tank;
[0010] The first volumetric cylinder is provided in three parts and evenly arranged on the shelf;
[0011] A collection cover is installed between the support frames and located below the shelf;
[0012] A mixing hopper is installed at the bottom of the collection hood and connected to the collection hood. A discharge pipe connected to the inside of the mixing hopper is fixedly installed at the bottom right side of the mixing hopper.
[0013] The receiving box is snapped onto the top of the base. A second capacity cylinder is installed inside the receiving box, and the top of the second capacity cylinder is located below the outlet of the discharge pipe.
[0014] Optionally, the bottom of the screening barrel is configured as a funnel shape, and a third discharge pipe communicating with the interior of the screening barrel is fixedly connected to the bottom of the screening barrel. A first discharge port flush with the top of the primary screen is opened on the right side of the screening barrel, and a second discharge port flush with the top of the secondary screen is opened on the left side of the screening barrel. The top of the first discharge pipe is connected to the first discharge port, and the top of the second discharge pipe is connected to the second discharge port. The bottom ends of the first, second, and third discharge pipes are at the same horizontal height.
[0015] Optionally, a first motor is fixedly installed at the top center of the support frame, and a first rotating rod is fixedly connected to the output end of the first motor. The bottom end of the first rotating rod passes through the center of the primary screen and the secondary screen in sequence. Two arc-shaped pusher plates are fixedly installed on the side wall of the first rotating rod. The two pusher plates are located on the top of the primary screen and the secondary screen respectively and are in contact with them. The ends of the two pusher plates are in contact with the inner wall of the screening barrel. Fixed rods connected to the support frame are fixedly installed on the top of both sides of the screening barrel.
[0016] Optionally, the shelf includes a crossbar and three sets of shelves. The crossbar is fixedly installed between the support frame, and the three sets of shelves are equidistantly installed on the crossbar. Each shelf consists of a circular shelf and four L-shaped positioning rods. The four positioning rods are arranged in a circular array around the shelf. Three first capacity cylinders are placed on the three shelves respectively, and the three first capacity cylinders are located below the first discharge pipe, the second discharge pipe and the third discharge pipe respectively.
[0017] Optionally, the mixing tank may also include:
[0018] The second motor is fixedly installed at the center of the top of the base;
[0019] The second rotating rod is fixedly connected to the output end of the second motor, and the top end of the second rotating rod extends into the mixing tank;
[0020] The spiral mixing blades are installed at the part of the second rotating rod located inside the mixing tank;
[0021] There are three stirring rods, which are L-shaped and connected in a circular array to the second rotating rod.
[0022] Optionally, the bottom of the mixing drum is designed as a slope with the left side higher than the right side. A discharge port is opened at the bottom of the right side of the mixing drum. The discharge pipe is designed to be inclined downward and connected to the discharge port. A groove is opened at the top of the left end of the discharge pipe. A baffle is fixedly inserted into the groove. The top of the baffle extends out of the groove and fits against the top of the discharge pipe. A hydraulic rod is fixedly installed on the right side of the mixing drum. The telescopic end of the hydraulic rod is fixedly connected to the top of the baffle.
[0023] Optionally, multiple semi-circular protrusions are evenly distributed at the bottom edge and center of the receiving box, and a semi-circular groove with the same number and corresponding position as the semi-circular protrusions is distributed on the top of the base. The semi-circular protrusions at the bottom of the receiving box can be fitted into the corresponding semi-circular grooves on the base plate.
[0024] Optionally, a retaining ring is fixedly installed at the center of the bottom of the inner wall of the receiving box, and the second capacity cylinder is located between the retaining rings, with the outer diameter of the second capacity cylinder being the same as the inner diameter of the retaining ring.
[0025] The beneficial effects of this utility model are:
[0026] The first motor is started, driving the first rotating rod to rotate, which in turn moves the two pusher plates along the surfaces of the primary and secondary screens. Under the action of the pusher plates, the material particles are accurately separated into three categories: large, medium, and small, according to their particle size differences. Large particles pass through the first feed pipe, medium particles pass through the second feed pipe, and small particles fall into the three corresponding first capacity cylinders on the support frame through the third feed pipe. Through this screening process, the grading and collection of material particles are efficiently achieved, providing accurate classified samples for subsequent testing.
[0027] Once the first capacity cylinder is filled with material particles, the overflowing material will fall into the collection hood below and be guided into the mixing tank. Inside the mixing tank, the spiral stirring blades and stirring rods work together to thoroughly mix the material and achieve uniform dispersion through powerful stirring. After the material is evenly mixed, the hydraulic rod is operated to push the baffle upward, releasing it from the blockage of the discharge pipe. At this time, the evenly mixed material particles in the mixing tank will slide down the discharge pipe and fall precisely into the second capacity cylinder in the receiving box. At the same time, the design of the receiving box can effectively receive and collect excess material, preventing spillage and ensuring that the material collection process is efficient, orderly, and waste-free.
[0028] This device, by setting up three first-capacity cylinders, can simultaneously and accurately screen and collect high-alumina bauxite materials of different particle sizes. After collection, the built-in mixing mechanism can quickly and thoroughly mix the graded materials. Subsequently, the second-capacity cylinder collects the uniform mixture. By simultaneously acquiring three different particle sizes of materials and the uniform mixture, it provides a more representative sample for subsequent bulk density testing, significantly improving the accuracy and reliability of the test results. In addition, the device adopts a parallel screening and collection and rapid mixing mechanism, which greatly shortens the sample preparation time. Compared with traditional equipment, the detection efficiency has achieved a qualitative leap, effectively meeting the high-efficiency detection needs in industrial production. Attached Figure Description
[0029] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0030] Figure 1 This is a schematic diagram of the overall structure of the bulk density testing device of this utility model;
[0031] Figure 2 This is a schematic diagram of the structure of the sieve bucket, storage rack, collection cover and support frame of the bulk density testing equipment of this utility model;
[0032] Figure 3 This is a cross-sectional structural diagram of a screening barrel for a bulk density testing device according to this utility model.
[0033] Figure 4 This is a schematic diagram of the collection cover, mixing tank and mixing mechanism of the bulk density testing equipment of this utility model;
[0034] Figure 5 This is a schematic diagram of the bottom structure of the receiving box of the bulk density testing device of this utility model;
[0035] Figure 6 This is a schematic diagram of the receiving box and the second capacity cylinder of the bulk density testing device of this utility model;
[0036] Figure 7This is a schematic diagram of the structure of the storage rack and the first capacity cylinder of the bulk density testing device of this utility model;
[0037] Figure label:
[0038] 11. Base; 12. Support frame; 13. Semi-circular groove; 14. Fixing rod;
[0039] 21. Screening barrel; 22. Primary screen; 23. First discharge port; 24. First feed pipe; 25. Secondary screen; 26. Second discharge port; 27. Second feed pipe; 28. Third feed pipe;
[0040] 31. First motor; 32. First rotating rod; 33. Pusher plate;
[0041] 4. Shelf; 41. Crossbar; 42. Shelf base; 421. Shelf board; 422. Positioning rod;
[0042] 5. First measuring cylinder;
[0043] 61. Collection hood; 62. Mixing tank; 63. Discharge pipe;
[0044] 71. Second motor; 72. Second rotating rod; 73. Spiral stirring blade; 74. Stirring rod;
[0045] 81. Hydraulic rod; 82. Baffle;
[0046] 91. Receiving box; 92. Fixing ring; 93. Second capacity cylinder; 94. Semi-circular protrusion. Detailed Implementation
[0047] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0048] Please see Figures 1-7This utility model provides a technical solution: a bulk density testing device, including a base 11, which is a rectangular plate structure. A U-shaped support frame 12 is fixedly installed on the top of the base 11. A screening barrel 21 is arranged in the upper part between the support frames 12. A primary screen 22 and a secondary screen 25 are arranged sequentially from top to bottom inside the screening barrel 21. The mesh diameter of the primary screen 22 is larger than that of the secondary screen 25. A first feed pipe 24 communicating with the interior of the screening barrel 21 is fixedly installed on the right side of the screening barrel 21, and a second feed pipe 27 communicating with the interior of the screening barrel 21 is fixedly installed on the left side of the screening barrel 21. A shelf 4 is installed between the support frames 12 and below the screening barrel 21. Three first capacity cylinders 5 are arranged on the shelf 4. A collection cover 61 is fixedly installed between the support frames 12 and below the shelf 4. A connecting device is fixedly installed at the bottom of the collection cover 61. The mixing tank 62 has a discharge pipe 63 fixedly installed at the bottom right side, which communicates with the inside of the mixing tank 62. The base 11 has a receiving box 91 at the top, and a second capacity cylinder 93 is set inside the receiving box 91. The top of the second capacity cylinder 93 is located below the outlet of the discharge pipe 63. The high-alumina bauxite powder can be orderly screened through the primary screen 22 and the secondary screen 25 in the screening tank 21. The screened high-alumina bauxite powder falls precisely into the three first capacity cylinders 5 on the shelf 4. The excess high-alumina bauxite powder enters the collection hood 61 below and enters the mixing tank 62 through the collection hood 61. The spiral stirring blade 73 and the stirring rod 74 in the mixing tank 62 work together to mix the materials thoroughly and achieve uniform dispersion through strong stirring. The mixed material particles will slide down the discharge pipe 63 and fall precisely into the second capacity cylinder 93 in the receiving box 91.
[0049] See Figure 1 and Figure 3 The bottom of the screening barrel 21 is funnel-shaped. A third discharge pipe 28, communicating with the interior of the screening barrel 21, is fixedly connected to the bottom of the screening barrel 21. A first discharge port 23, flush with the top of the primary screen 22, is opened on the right side of the screening barrel 21. A second discharge port 26, flush with the top of the secondary screen 25, is opened on the left side of the screening barrel 21. The top of the first discharge pipe 24 is connected to the first discharge port 23, and the top of the second discharge pipe 27 is connected to the second discharge port 26. The first discharge pipe 24, the second discharge pipe 27, and the third discharge pipe... The bottom of 28 is at the same horizontal height. By starting the first motor 31, it drives the first rotating rod 32 to rotate, which drives the two pusher plates 33 to move along the surface of the first screen 22 and the second screen 25 respectively. Under the action of the pusher plates 33, the material particles are accurately separated into three categories: large, medium and small according to the difference in particle size. Among them, the large particles enter the first discharge pipe 24 through the first discharge port 23, the medium particles enter the second discharge pipe 27 through the second discharge port 26, and the small particles enter the third discharge pipe 28.
[0050] See Figure 2 and Figure 3 A first motor 31 is fixedly installed at the top center of the support frame 12. A first rotating rod 32 is fixedly connected to the output end of the first motor 31. The bottom end of the first rotating rod 32 passes through the center of the primary screen 22 and the secondary screen 25 in sequence. Two arc-shaped pusher plates 33 are fixedly installed on the side wall of the first rotating rod 32. The two pusher plates 33 are located on the top of the primary screen 22 and the secondary screen 25 respectively and are attached to them. The ends of the two pusher plates 33 are in contact with the inner wall of the screening barrel 21. Fixed rods 14 connected to the support frame 12 are fixedly installed on the top of both sides of the screening barrel 21. The pusher plates 33 are set with arc surfaces. Therefore, when the pusher plates 33 rotate, the material particles will be pushed along the arc surface of the pusher plates 33 to the edge of the primary screen 22 or the secondary screen 25, and finally pushed into the first discharge port 23 or the second discharge port 26.
[0051] See Figure 1 , Figure 2 and Figure 7 The shelf 4 includes a crossbar 41 and three sets of shelves 42. The crossbar 41 is fixedly installed between the support frames 12. The three sets of shelves 42 are equidistantly installed on the crossbar 41. Each shelf 42 consists of a circular shelf 421 and four L-shaped positioning rods 422. The four positioning rods 422 are arranged in a circular array around the shelf 421. Three first capacity cylinders 5 are placed on the three shelves 42 respectively, and the three first capacity cylinders 5 are located below the first discharge pipe 24, the second discharge pipe 27 and the third discharge pipe 28 respectively. The shelves 42 in the shelf 4 can provide a position for the placement of the first capacity cylinders 5, and under the action of the four positioning rods 422 around the shelf 421, the position of the first capacity cylinders 5 can be fixed so that they can stably receive materials.
[0052] See Figure 2 and Figure 4 A second motor 71 is fixedly installed at the center of the top of the base 11. A second rotating rod 72 is fixedly connected to the output end of the second motor 71, and the top end of the second rotating rod 72 extends into the mixing tank 62. A spiral stirring blade 73 is installed on the part of the second rotating rod 72 located inside the mixing tank 62. Three stirring rods 74 arranged in a circular array are also installed on the second rotating rod 72. The stirring rods 74 are L-shaped. By operating the second motor 71, the second rotating rod 72 can be driven to rotate, thereby driving the spiral stirring blades 73 and stirring rods 74 on the second rotating rod 72 to stir and mix the particles in the mixing tank 62, which facilitates the subsequent sampling and collection of the uniformly mixed material.
[0053] See Figure 2 and Figure 4The bottom of the mixing drum 62 is designed with a slope that is higher on the left and lower on the right. A discharge port is provided at the bottom right side of the mixing drum 62. The discharge pipe 63 is designed to slope downward and is connected to the discharge port. A slot is provided at the top left end of the discharge pipe 63. A baffle 82 is fixedly inserted into the slot. The top of the baffle 82 extends out of the slot and fits against the top of the discharge pipe 63. A hydraulic rod 81 is fixedly installed on the right side of the mixing drum 62. The telescopic end of the hydraulic rod 81 is fixedly connected to the top of the baffle 82. By operating the hydraulic rod 81, the baffle 82 is pushed upward. The upward movement of the baffle 82 releases its blockage of the discharge pipe 63. At this time, the uniformly mixed material particles in the mixing drum 62 will enter the discharge pipe 63 along the slope at the bottom of its inner cavity, and then slide down the discharge pipe 63 into the second capacity cylinder 93 in the receiving box 91.
[0054] See Figure 2 and Figure 5 Multiple semi-circular protrusions 94 are evenly distributed at the bottom edge and center of the receiving box 91. The top of the base 11 has a semi-circular groove 13 with the same number and position as the semi-circular protrusions 94. The semi-circular protrusions 94 at the bottom of the receiving box 91 can be fitted into the semi-circular grooves 13 on the base plate. The position of the receiving box 91 can be constrained by the mutual engagement of the semi-circular protrusions 94 and the semi-circular grooves 13.
[0055] See Figure 1 and Figure 6 A fixing ring 92 is fixedly installed at the center of the bottom of the inner wall of the receiving box 91. The second capacity cylinder 93 is located between the fixing rings 92, and the outer diameter of the second capacity cylinder 93 is the same as the inner diameter of the fixing ring 92. The position of the second capacity cylinder 93 is fixed by the constraint of the fixing rings 92 inside the receiving box 91.
[0056] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A bulk density testing device, characterized in that, include: The base is designed as a rectangular plate structure. The support frame is fixedly installed on top of the base in a U-shape; The screening barrel is located in the upper part between the support frames. Inside the screening barrel, a primary screen and a secondary screen are installed from top to bottom. The mesh diameter of the primary screen is larger than that of the secondary screen. A first feed pipe connected to the inside of the screening barrel is fixedly installed on the right side of the screening barrel, and a second feed pipe connected to the inside of the screening barrel is fixedly installed on the left side of the screening barrel. A shelf is installed between the support frames and located below the screening tank; The first volumetric cylinder is provided in three parts and evenly arranged on the shelf; A collection cover is installed between the support frames and located below the shelf; A mixing hopper is installed at the bottom of the collection hood and connected to the collection hood. A discharge pipe connected to the inside of the mixing hopper is fixedly installed at the bottom right side of the mixing hopper. The receiving box is snapped onto the top of the base. A second capacity cylinder is installed inside the receiving box, and the top of the second capacity cylinder is located below the outlet of the discharge pipe.
2. The bulk density testing device according to claim 1, characterized in that, The bottom of the screening barrel is funnel-shaped, and a third discharge pipe communicating with its interior is fixedly connected to the bottom of the screening barrel. A first discharge port, flush with the top of the primary screen, is opened on the right side of the screening barrel, and a second discharge port, flush with the top of the secondary screen, is opened on the left side of the screening barrel. The top of the first discharge pipe is connected to the first discharge port, and the top of the second discharge pipe is connected to the second discharge port. The bottoms of the first, second, and third discharge pipes are at the same horizontal height.
3. The bulk density testing device according to claim 1, characterized in that, A first motor is fixedly installed at the top center of the support frame. A first rotating rod is fixedly connected to the output end of the first motor. The bottom end of the first rotating rod passes through the center of the primary screen and the secondary screen in sequence. Two arc-shaped pusher plates are fixedly installed on the side wall of the first rotating rod. The two pusher plates are located on the top of the primary screen and the secondary screen respectively and are attached to them. The ends of the two pusher plates are in contact with the inner wall of the screening barrel. Fixed rods connected to the support frame are fixedly installed on the top of both sides of the screening barrel.
4. The bulk density testing device according to claim 2, characterized in that, The shelf includes a crossbar and three sets of shelves. The crossbar is fixedly installed between the support frames. The three sets of shelves are equidistantly installed on the crossbar. Each shelf consists of a circular shelf and four L-shaped positioning rods. The four positioning rods are arranged in a circular array around the shelf. The three first capacity cylinders are placed on the three shelves respectively, and the three first capacity cylinders are located below the first discharge pipe, the second discharge pipe and the third discharge pipe respectively.
5. The bulk density testing device according to claim 1, characterized in that, The mixing tank also includes: The second motor is fixedly installed at the center of the top of the base; The second rotating rod is fixedly connected to the output end of the second motor, and the top end of the second rotating rod extends into the mixing tank; The spiral mixing blades are installed at the part of the second rotating rod located inside the mixing tank; There are three stirring rods, which are L-shaped and connected in a circular array to the second rotating rod.
6. The bulk density testing device according to claim 1, characterized in that, The bottom of the mixing barrel is designed as a slope with the left side higher than the right side. A discharge port is provided at the bottom right side of the mixing barrel. The discharge pipe is designed to be inclined downward and is connected to the discharge port. A groove is provided at the top left end of the discharge pipe. A baffle is fixedly inserted into the groove. The top of the baffle extends out of the groove and fits against the top of the discharge pipe. A hydraulic rod is fixedly installed on the right side of the mixing barrel. The telescopic end of the hydraulic rod is fixedly connected to the top of the baffle.
7. The bulk density testing device according to claim 1, characterized in that, Multiple semi-circular protrusions are evenly distributed at the bottom edge and center of the receiving box. The top of the base has a semi-circular groove with the same number of semi-circular protrusions and corresponding positions. The semi-circular protrusions at the bottom of the receiving box can be fitted into the corresponding semi-circular grooves on the base plate.
8. The bulk density testing device according to claim 1, characterized in that, A fixing ring is fixedly installed at the center of the bottom of the inner wall of the receiving box, and the second capacity cylinder is located between the fixing rings, with the outer diameter of the second capacity cylinder being the same as the inner diameter of the fixing ring.