Testing device for preparing solid waste-based cementing material

Abstract

The utility model relates to a testing device for preparing a solid waste-based cementing material, which is characterized in that a ball-milling assembly is arranged in a box body of the testing device, the ball-milling assembly comprises a rotating shaft, and a primary ball-milling cylinder, a middle-stage ball-milling cylinder and a high-stage ball-milling cylinder are sequentially and fixedly connected outside the rotating shaft along the radial direction of the rotating shaft; the apertures of material holes distributed in the three stages of ball-milling cylinders are sequentially reduced, the ball-milling section of the primary ball-milling cylinder corresponds to the other two stages of ball-milling cylinders, and the feeding section extends out of the end part of the middle-stage ball-milling cylinder; an annular feeding bin is rotationally connected outside the feeding section, inner feeding ports are distributed in the corresponding feeding section, an outer feeding port is formed in the top of the annular feeding bin, a feeding hopper is connected to the outer feeding port, a through port for the feeding hopper to penetrate out is formed in the box cover, and the box body has a first inclined state. And the ball milling assembly inclines downwards from one end of the feeding section to one end of the ball milling section, so that feeding into the primary ball milling barrel is facilitated. According to the test device, continuous feeding can be achieved, and the ball milling speed and the powder uniformity can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of solid waste utilization, in particular to a test device for preparing solid waste-based cementitious materials. Background Art

[0002] Tailings, coal gangue and red mud are the main components of industrial solid waste, and their stockpiles show an increasing trend year by year. Long-term storage has a great impact on the environment. Therefore, new treatment methods are urgently needed to solve this problem, and resource utilization has become an important way to solve industrial solid waste at present. Among them, using the above industrial solid waste in solid waste-based cementitious materials is a relatively potential application method. Specifically, it needs to go through treatment procedures such as mixing and crushing, high-temperature calcination, carbonization, grinding, and proportioning application.

[0003] At present, many treatment procedures are still in the experimental stage. Through repeated experiments, continuous exploration can accelerate their actual application speed. Experimental research has found that conditions such as raw material ratio, crushing particle size, calcination temperature, carbonization temperature, and grinding degree all have a great impact on the performance of the obtained materials. And the equipment used in the experiment is the cornerstone to realize the above experimental exploration. The experiment generally includes small-scale tests and pilot-scale tests. The small-scale test equipment mainly focuses on performance research, while the pilot-scale test equipment not only pays attention to performance but also production speed. Therefore, it is also imperative to improve the test equipment.

[0004] Among the test equipment, the ball mill used is an ordinary ball mill on the market. This kind of ball mill has problems such as discontinuous feeding, slow ball milling speed, and uneven powder particle size. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a test device for preparing solid waste-based cementitious materials, which can not only feed continuously, but also is conducive to significantly improving the ball milling speed and powder uniformity, thereby facilitating the acceleration of the actual application process.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A test device for preparing solid waste-based cementitious materials, including a box body and a box cover. A ball milling assembly is installed in the box body. The ball milling assembly includes a rotating shaft rotatably connected to the box body. Along the radial direction of the rotating shaft, a primary ball milling cylinder, an intermediate ball milling cylinder, and a high-level ball milling cylinder with metal balls inside are fixedly connected in sequence. The aperture of the material holes distributed on the primary ball milling cylinder, the intermediate ball milling cylinder, and the high-level ball milling cylinder decreases in sequence. The primary ball milling cylinder includes a ball milling section and a feeding section. The ball milling section is arranged corresponding to the intermediate ball milling cylinder and the high-level ball milling cylinder, and the feeding section extends out of the end of the intermediate ball milling cylinder.

[0008] The feed section is externally rotatably connected to an annular feed bin, and an internal feed port is distributed on the feed section corresponding to the annular feed bin. The top of the annular feed bin is provided with an external feed port, and the external feed port is connected to the feed hopper. The box cover is provided with a through opening for the feed hopper to pass through. The box body has a first inclined state. When the box body is in the first inclined state, the ball mill assembly tilts downward from one end of the feed section to one end of the ball mill section to facilitate feeding into the primary ball mill cylinder.

[0009] In one example, the test device also includes a fixed base for placing the box, a first group of telescopic cylinders is connected between one end of the bottom of the box and the fixed base, and a second group of telescopic cylinders is connected between the other end and the fixed base. The first group of telescopic cylinders and the second group of telescopic cylinders work together to adjust the tilt angle of the box.

[0010] In one example, an arc-shaped material guide plate is provided in the box below the ball mill assembly, and a discharge port is provided at one end of the bottom of the arc-shaped material guide plate.

[0011] In one example, the feed hopper includes a first hopper and a second hopper with a trapezoidal cross-section. The first hopper is fixed to the external feed port, and its top is set lower than the box cover. The second hopper is connected to the first hopper through the through port.

[0012] In one example, a cover is detachably connected between the ends of the high-grade ball mill and the intermediate ball mill, between the ends of the intermediate ball mill and the primary ball mill, and between the primary ball mill and the end of the rotating shaft.

[0013] In one example, the cover is threadedly connected to the ball mill assembly, and a disassembly and assembly force-applying portion is provided at the outer end of the cover.

[0014] In one example, the rotating shaft is driven by a servo motor fixed to the box.

[0015] In one example, a recess is provided on the top of the box body, and the rotating shaft is installed in the recess through a first bearing.

[0016] In one example, the inner end surface of the annular feed bin is rotatably connected to the feed section via two second bearings.

[0017] In one example, when the box is in the first tilted state, its tilt angle is 10-20 degrees.

[0018] The present utility model adopts the above structure and has the following advantages: For the test device for preparing solid waste-based cementitious materials, through the cooperation of the primary ball mill cylinder, annular feed bin, feed hopper and the box cover, continuous feeding can be achieved without affecting ball milling. Compared with one-time feeding, less material is more conducive to uniform grinding, which helps to accelerate the ball milling speed. Through the cooperation of the primary ball mill cylinder, intermediate ball mill cylinder and high-level ball mill cylinder, step-by-step grinding from the inside to the outside can be realized. Step-by-step grinding not only has a fast speed, but also helps to improve the uniformity of the powder material.

[0019] By arranging the fixed seat, the first set of telescopic cylinders, the second set of telescopic cylinders and the box body in cooperation, the grinding speed, discharging speed, etc. can be accelerated by adjusting the inclination angle.

[0020] By setting the end cover to be detachable, it is beneficial to disassemble and assemble each level of ball mill cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the open cover structure of one embodiment of the present utility model;

[0022] Figure 2 It is Figure 1 a partial structural schematic diagram of the ball mill assembly in

[0023] Figure 3 It is Figure 2 a structural schematic diagram after removing the cover;

[0024] Figure 4 It is Figure 3 a schematic diagram of the cooperation structure of the rotating shaft and the primary ball mill cylinder in

[0025] Figure 5 It is Figure 1 a cross-sectional view of

[0026] Figure 6 a schematic diagram of the cooperation structure of the first hopper and the second hopper.

[0027] In the figure, 1. box body, 2. box cover, 3. ball mill assembly, 4. fixed seat, 5. the first set of telescopic cylinders, 6. the second set of telescopic cylinders, 7. arc-shaped guide plate,

[0028] 21. through port, 31. rotating shaft, 32. primary ball mill cylinder, 33. intermediate ball mill cylinder, 34. high-level ball mill cylinder, 35. annular feed bin, 36. feed hopper, 37. servo motor, 71. discharge port;

[0029] 321. ball milling section, 322. feed section, 341. cover, 351. outer feed port, 361. first hopper, 362. second hopper, 3221. inner feed port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To clearly illustrate the technical features of this solution, the following will elaborate on the present utility model in detail through specific embodiments and in conjunction with its accompanying drawings. In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] As Figure 1-6 shown, in this embodiment, the test device for preparing solid waste-based cementitious materials includes a box body 1 and a box cover 2. A ball milling assembly 3 is installed inside the box body 1. The ball milling assembly 3 includes a rotating shaft 31 rotatably connected to the box body 1. Along the radial direction of the rotating shaft 31, a primary ball milling cylinder 32, an intermediate ball milling cylinder 33, and a high-level ball milling cylinder 34 are sequentially fixedly connected. The pore diameters of the material holes distributed on the primary ball milling cylinder 32, the intermediate ball milling cylinder 33, and the high-level ball milling cylinder 34 decrease in sequence. The primary ball milling cylinder 32 includes a ball milling section 321 and a feeding section 322. The ball milling section 321 is correspondingly arranged with the intermediate ball milling cylinder 33 and the high-level ball milling cylinder 34. The feeding section 322 extends out of the end of the intermediate ball milling cylinder 33. An annular feeding bin 35 is rotatably connected to the outside of the feeding section 322. Inner feeding ports 3221 are distributed on the feeding section 322 corresponding to the annular feeding bin 35. An outer feeding port 351 is provided at the top of the annular feeding bin 35. A feeding hopper 36 is externally connected to the outer feeding port 351. A through port 21 for the feeding hopper 36 to pass through is provided on the box cover 2. The box body 1 has a first inclined state. When the box body 1 is in the first inclined state, the ball milling assembly 3 is inclined downward from one end of the feeding section to one end of the ball milling section to facilitate feeding into the primary ball milling cylinder. Working principle: During use, adjust the box body to the first inclined state. In this state, feed into the primary ball milling cylinder 32 through the feeding hopper 36, and start the ball milling assembly to grind while feeding. First, the material contacts the metal balls (such as steel balls) in the primary ball milling cylinder 32. When part of the material reaches the pore size of the primary ball milling cylinder 32, it will enter the intermediate grinding cylinder 33 and be finely ground by the metal balls in the intermediate grinding cylinder 33. When it reaches the pore size of the intermediate grinding cylinder 33, it will enter the high-level grinding cylinder 34 to continue grinding until it finally reaches the grinding size and then discharges. The particle diameters of the metal balls in the three-stage grinding cylinders decrease step by step along with the pore sizes on them. This device adopts a gradually grinding method, which not only has a fast grinding speed but also a high grinding uniformity.

[0032] During the feeding process, since the feeding hopper 36 passes through the through-opening 21 on the box cover 2, it is fixed relative to the box cover 2. At the same time, the annular feeding bin 35 fixedly connected to the feeding hopper 36 will also be fixed relative to the box cover 2. And since the annular feeding bin 35 is rotatably arranged with the primary ball milling cylinder 32, it is possible to realize grinding while feeding, thus greatly accelerating the grinding speed.

[0033] In one specific embodiment, as Figure 1 shown, the test device further includes a fixed seat 4 for placing the box body 1. A first set of telescopic cylinders 5 is connected between one end of the bottom of the box body 1 and the fixed seat 4, and a second set of telescopic cylinders 6 is connected between the other end and the fixed seat 4. The first set of telescopic cylinders 5 and the second set of telescopic cylinders 6 cooperate to adjust the inclination angle of the box body 1. The best grinding effect and discharging effect, etc., can be achieved through angle adjustment.

[0034] In one specific embodiment, as Figure 5 shown, an arc-shaped guide plate 7 is provided below the ball milling assembly 3 in the box body 1. One end of the bottom of the arc-shaped guide plate 7 is provided with a discharge port 71. The setting of the arc-shaped guide plate 7 can gather the powder materials coming out of the high-level ball milling cylinder, facilitating the export of the powder materials.

[0035] In one specific embodiment, the feeding hopper 36 can adopt the following structure. Specifically, the feeding hopper 36 includes a first hopper 361 with a trapezoidal cross-section and a second hopper 362. The first hopper 361 is fixedly connected to the outer feeding port 351, and its top is lower than the box cover 2. The second hopper 362 passes through the through-opening 21 and is inserted and connected to the first hopper 361. Figure 1 The second hopper is in a suspended and uninstalled state.

[0036] During use, when the box cover 2 is closed, the second hopper is inserted into the first hopper 361 from outside the box cover 2 through the through-opening 21. Their shapes match, and due to the trapezoidal cross-section, a section of the second hopper 362 can still remain outside the box cover 2 after insertion, while the lower end is in the middle of the first hopper, as Figure 6 shown. In this way, a fixed limit can be formed for the annular feeding bin 35.

[0037] In one specific embodiment, as Figure 3 shown, a sealing cover 341 is detachably connected between the ends of the high-level ball milling cylinder 34 and the intermediate ball milling cylinder 33, between the ends of the intermediate ball milling cylinder 33 and the primary ball milling cylinder 32, and between the ends of the primary ball milling cylinder 32 and the rotating shaft 31, respectively.

[0038] Furthermore, for convenient disassembly and assembly, the sealing cover 341 is threadedly connected to the ball milling assembly, and a disassembly and assembly force application part is provided at the outer end of the sealing cover.

[0039] In one specific embodiment, as Figure 1 shown, the rotating shaft 31 is driven by a servo motor 37 fixedly connected to the box body 1; a notch is provided at the top of the box body 1, and the rotating shaft 31 is installed in the notch through a first bearing; the inner end face of the annular feed bin is rotationally connected to the feed section through two second bearings.

[0040] In one specific embodiment, when the box body is in the first inclined state, its inclination angle is 10 - 20 degrees.

[0041] The above specific implementation manners cannot be used as a limitation to the protection scope of the present invention. For those skilled in the art of the present invention, any alternative improvement or transformation made to the implementation manners of the present invention falls within the protection scope of the present invention. Where the present invention is not described in detail, it is all well-known technology to those skilled in the art of the present technology.

Claims

1. An experimental device for preparing solid waste-based cementitious materials, characterized in that, It includes a box body and a box cover. A ball milling assembly is installed inside the box body. The ball milling assembly includes a rotating shaft rotatably connected to the box body. Along the radial direction of the rotating shaft, a primary ball milling cylinder with metal balls inside, an intermediate ball milling cylinder, and a high - grade ball milling cylinder are fixedly connected in sequence. The aperture of the material holes distributed on the primary ball milling cylinder, the intermediate ball milling cylinder, and the high - grade ball milling cylinder decreases in sequence. The primary ball milling cylinder includes a ball milling section and a feeding section. The ball milling section is arranged corresponding to the intermediate ball milling cylinder and the high - grade ball milling cylinder. The feeding section extends out of the end of the intermediate ball milling cylinder. An annular feeding bin is rotatably connected to the outside of the feeding section. Inner feeding ports are distributed on the feeding section corresponding to the annular feeding bin. An outer feeding port is arranged at the top of the annular feeding bin. A feeding hopper is externally connected to the outer feeding port. A through - hole for the feeding hopper to pass through is arranged on the box cover. The box body has a first inclined state. When the box body is in the first inclined state, the ball milling assembly inclines downward from one end of the feeding section to one end of the ball milling section to facilitate feeding into the primary ball milling cylinder.

2. The test device for preparing the solid waste-based cementitious material according to claim 1, characterized in that, The test device also includes a fixed seat for placing the box body. A first group of telescopic cylinders is connected between one end of the bottom of the box body and the fixed seat, and a second group of telescopic cylinders is connected between the other end and the fixed seat. The first group of telescopic cylinders and the second group of telescopic cylinders cooperate to adjust the inclination angle of the box body.

3. The test device for preparing the solid waste-based cementitious material according to claim 2, characterized in that, An arc - shaped material guiding plate is arranged inside the box body below the ball milling assembly. An outlet is arranged at one end of the bottom of the arc - shaped material guiding plate.

4. The test device for preparing the solid waste-based cementitious material according to claim 1, characterized in that, The feeding hopper includes a first hopper and a second hopper with a trapezoidal cross - section. The first hopper is fixedly connected to the outer feeding port and its top is lower than the box cover. The second hopper passes through the through - hole and is inserted and connected to the first hopper.

5. The test device for preparing the solid waste-based cementitious material according to claim 1, wherein Detachable covers are respectively connected between the ends of the high - grade ball milling cylinder and the intermediate ball milling cylinder, between the ends of the intermediate ball milling cylinder and the primary ball milling cylinder, and between the ends of the primary ball milling cylinder and the rotating shaft.

6. The test device for preparing the solid waste-based cementitious material according to claim 5, characterized in that, The cover is thread - connected to the ball milling assembly, and a disassembly and assembly force - applying part is arranged at the outer end of the cover.

7. The test device for preparing the solid waste-based cementitious material according to claim 1, characterized in that, The rotating shaft is driven by a servo motor fixedly connected to the box body.

8. The test device for preparing solid waste-based cementitious materials according to claim 1, characterized in that, A notch is arranged at the top of the box body, and the rotating shaft is installed in the notch through a first bearing.

9. The test device for preparing the solid waste-based cementitious material according to claim 1, characterized in that, The inner end face of the annular feeding bin is rotatably connected to the feeding section through two second bearings.

10. The test device for preparing the solid waste-based cementitious material according to claim 1, characterized in that, When the box body is in the first inclined state, its inclination angle is 10 - 20 degrees.

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