Coal sample preparation device

Abstract

The utility model discloses a coal experimental sample preparation device of coal experimental grinding equipment technical field, including support frame, speed reducer, grinding box and feed inlet, the speed reducer fixed mounting is in support frame top, and support rod fixed connection is in grinding box bottom, and the grinding plate is installed in grinding box right side lower part, and the through -hole is set up on the grinding plate, and the baffle fixed mounting is in the upper portion in grinding box, and the installation shaft sets up in the middle part of grinding box, and the fixed link fixed connection is on the installation shaft, and the broken head fixed mounting is in fixed link one end, and the arc fixed plate is installed in grinding box front end right side, and the threaded hole sets up in grinding box right side upper portion, and the mounting hole sets up in arc fixed plate upper portion, and the bolt is installed in mounting hole and threaded hole, and the through -hole is as "automatic screening valve", and the qualified particle instant discharge avoids excessive grinding, and reduces invalid energy consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of coal experimental grinding equipment, specifically a carbon experimental sample preparation device. Background Technology

[0002] The main purpose of conducting experiments after coal sampling is to scientifically analyze and evaluate the quality, performance, and applicability of the coal. The experiments include coal quality, coal combustion performance, and environmental protection. Before conducting the experiments, the coal needs to be ground into granules to facilitate the testing. For example, in the coal grinding and screening mechanism disclosed in Chinese patent literature (application number: CN202221027205.5), the tilt angle of the inclined screen plate is fixed, and the residence time of particles on the screen surface is not adjustable. This may result in some qualified particles being discharged before being fully screened out (through the discharge hole). The screen plate is sealed and fixedly connected to the inner wall of the grinding box, making it impossible to replace the screen with different apertures as needed.

[0003] Therefore, we propose a carbon experimental sample preparation device. Utility Model Content

[0004] The purpose of this invention is to provide a carbon experimental sample preparation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal experimental sample preparation device, comprising a support frame, a reduction motor, a grinding box and a feed inlet, wherein the reduction motor is fixedly installed on the top of the support frame; A support rod is fixedly connected to the bottom of the grinding box, and the bottom end of the support rod is fixedly connected to the support frame. A grinding plate is installed on the lower right side of the grinding box. Through holes are provided on the grinding plate; A baffle is fixedly installed inside the upper part of the grinding box; The mounting shaft is located in the middle of the grinding box; The fixing rod is fixedly connected to the mounting shaft; A crushing head is fixedly installed at one end of the fixing rod; An arc-shaped fixing plate is installed on the right side of the front end of the grinding box; A threaded hole is located on the upper right side of the grinding box; Mounting holes are located on the upper part of the arc-shaped fixing plate; Bolts are installed in the mounting holes and threaded holes.

[0006] Preferably, a first positioning groove is provided on the inner wall of the rear end of the grinding box, a second positioning groove is provided on one side of the arc-shaped fixing plate, and positioning blocks that cooperate with the second positioning groove and the first positioning groove are respectively provided at the front and rear ends of the grinding plate.

[0007] Preferably, the end of the crushing head furthest from the fixing rod is inclined.

[0008] Preferably, the rear end of the mounting shaft passes through the grinding box and is connected to the geared motor drive shaft, and the mounting shaft and the rear end of the grinding box are connected by a bearing.

[0009] Preferably, the right end of the baffle is inclined downward.

[0010] Preferably, there are four sets of fixing rods and crushing heads, and the four sets of fixing rods and crushing heads are evenly installed on the mounting shaft.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. When the coal block comes into contact with the high-speed rotating crusher head, the crusher head first breaks the coal block. The broken coal block falls into the grinding chamber. The crusher head rotates at high speed, pushing the coal block to rotate inside the grinding chamber. At the same time, the coal block comes into contact with the grinding plate and is ground. If the ground coal block particles meet the required size, the coal particles are discharged through the through hole. If the coal particles do not meet the required size, the coal particles continue to be ground by the crusher head in the grinding chamber until the coal particles meet the required experimental size. The through hole acts as an "automatic screening valve". Qualified particles are discharged immediately to avoid over-grinding and reduce ineffective energy consumption. At the same time, the discharged coal particles are screened through the through hole to meet the requirements of the coal test, thereby ensuring the accuracy of the coal test results.

[0012] 2. Remove the bolts and the arc-shaped fixing plate. After removing the arc-shaped fixing plate, disassemble the grinding plate and replace it with a grinding plate of a different through-hole diameter. Install the new grinding plate on the grinding box and align the positioning block at the rear end of the grinding plate with the first positioning groove. Then reinstall the arc-shaped fixing plate, aligning the second positioning groove on the arc-shaped fixing plate with the positioning block at the front end of the grinding plate. Install the bolts and tighten them to install the grinding plate. This device allows for the replacement of grinding plates with different through-hole diameters according to the required size of the coal particles, to meet different experimental needs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the grinding box of this utility model; Figure 4This is a schematic diagram of the installation structure of the arc-shaped fixing plate of this utility model; Figure 5 This is an enlarged view of section A of this utility model; Figure 6 This is a schematic diagram of the grinding plate installation structure of this utility model; Figure 7 This is an enlarged view of section B of this utility model.

[0014] In the diagram: 1. Support frame; 2. Support rod; 3. Gear motor; 4. Grinding box; 5. Feed inlet; 6. Grinding plate; 7. Through hole; 8. Baffle; 9. Mounting shaft; 10. Fixing rod; 11. Crushing head; 12. Arc-shaped fixing plate; 13. Threaded hole; 14. Mounting hole; 15. Bolt; 16. First positioning groove; 17. Second positioning groove; 18. Positioning block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-7 This utility model provides a technical solution: a coal experimental sample preparation device, including a support frame 1, a reduction motor 3, a grinding box 4 and a feed inlet 5. The reduction motor 3 is fixedly installed on the top of the support frame 1, the support rod 2 is fixedly connected to the bottom of the grinding box 4, and the bottom end of the support rod 2 is fixedly connected to the support frame 1. The grinding plate 6 is installed on the lower right side of the grinding box 4, the through hole 7 is set on the grinding plate 6, the baffle 8 is fixedly installed in the upper part of the grinding box 4, the mounting shaft 9 is set in the middle of the grinding box 4, the fixing rod 10 is fixedly connected to the mounting shaft 9, the crushing head 11 is fixedly installed on one end of the fixing rod 10, the arc-shaped fixing plate 12 is installed on the right front end of the grinding box 4, the threaded hole 13 is set in the upper right side of the grinding box 4, the mounting hole 14 is set in the upper part of the arc-shaped fixing plate 12, and the bolts 15 are installed in the mounting hole 15 and the threaded hole 13. There are two sets of bolts 15, one set for fixing the upper part of the arc-shaped fixing plate 12 and the other set for fixing the lower part of the arc-shaped fixing plate 12. The crushed coal pieces are ground by adding coal into the grinding chamber 4 through the feed inlet 5. Simultaneously, the reduction motor 3 is started, which drives the fixed rod 10 to rotate via the mounting shaft 9. The fixed rod 10 drives the crushing head 11 to rotate rapidly. The coal pieces entering the grinding chamber 4 through the feed inlet 5 fall into the grinding chamber 4 through the baffle 8. When the coal pieces come into contact with the high-speed rotating crushing head 11, the crushing head 11 first crushes the coal pieces. The crushed coal pieces fall into the grinding chamber 4, and the high-speed rotation of the crushing head 11 pushes the coal pieces within the grinding chamber 4. The internal rotation allows the coal block to contact the grinding plate 7 simultaneously, grinding the coal block. If the ground coal particles meet the required size, they are discharged through the through hole 7. If the coal particles do not meet the required size, they continue to be ground in the grinding box 4 by the crushing head 11 until they meet the required experimental size. The through hole acts as an "automatic screening valve," allowing qualified particles to be discharged immediately, avoiding over-grinding and reducing ineffective energy consumption. At the same time, the discharged coal particles are screened through the through hole 7 to meet the requirements of the coal experiment, thus ensuring the accuracy of the coal experiment results.

[0017] Reference embodiment: A first positioning groove 16 is provided on the inner wall of the rear end of the grinding box 4, a second positioning groove 17 is provided on one side of the arc-shaped fixing plate 12, and positioning blocks 18 that cooperate with the second positioning groove 17 and the first positioning groove 16 are respectively provided at the front and rear ends of the grinding plate 6. Loosen bolt 15 using a tool (such as a wrench) and remove bolt 15. Remove arc-shaped fixing plate 12. After removing arc-shaped fixing plate 12, disassemble grinding plate 6 and replace it with grinding plate 6 of different through hole 7 diameters. Install the new grinding plate 6 on grinding box 4 and make the positioning block 18 at the rear end of grinding plate 6 cooperate with the first positioning groove 16. Then install arc-shaped fixing plate 12. The second positioning groove 17 on arc-shaped fixing plate 12 cooperates with the positioning block 18 at the front end of grinding plate 6. Install bolt 15 and tighten bolt 15 to install grinding plate 6. This device can replace grinding plates of different through hole 7 diameters according to the required size of coal particles to meet different experimental needs.

[0018] Reference embodiment: The end of the crushing head 11 away from the fixing rod 10 is inclined. There are four sets of fixing rods 10 and crushing heads 11. The four sets of fixing rods 10 and crushing heads 11 are evenly installed on the mounting shaft 9. The distance between the bottom of the crushing head 11 and the grinding plate 6 decreases from large to small, so as to grind coal of different diameters.

[0019] Reference embodiment: The rear end of the mounting shaft 9 passes through the grinding box 4 and is connected to the drive shaft of the geared motor 3. The mounting shaft 9 and the rear end of the grinding box 4 are connected by a bearing. The geared motor 3 drives the mounting shaft 9 to rotate, and the bearing is a bearing with a sealing cover to prevent coal particles from entering the bearing.

[0020] Reference embodiment: The right end of the baffle 8 is inclined downward to buffer the coal entering the grinding box 4. At the same time, the distance between the right end of the baffle 8 and the inner wall of the grinding box 4 is limited to control the speed at which the coal enters the grinding box 4.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal experimental sample preparation device, characterized in that, It includes a support frame (1), a geared motor (3), a grinding box (4) and a feed inlet (5), wherein the geared motor (3) is fixedly installed on the top of the support frame (1); Support rod (2) is fixedly connected to the bottom of the grinding box (4), and the bottom end of the support rod (2) is fixedly connected to the support frame (1); Grinding plate (6) is installed on the lower right side of the grinding box (4); Through hole (7), through hole (7) is provided on the grinding plate (6); Baffle (8) is fixedly installed in the upper part of the grinding box (4); Mounting shaft (9) is located in the middle of the grinding box (4); A fixing rod (10) is fixedly connected to the mounting shaft (9); A crushing head (11) is fixedly installed at one end of the fixing rod (10); An arc-shaped fixing plate (12) is installed on the right side of the front end of the grinding box (4); Threaded hole (13) is provided on the upper right side of the grinding box (4); Mounting hole (14) is provided on the upper part of the arc-shaped fixing plate (12); Bolt (15) is installed in the mounting hole (14) and threaded hole (13).

2. The coal experimental sample preparation device according to claim 1, characterized in that: The grinding box (4) has a first positioning groove (16) on its rear inner wall, and the arc-shaped fixing plate (12) has a second positioning groove (17) on one side. The grinding plate (6) has positioning blocks (18) at its front and rear ends that cooperate with the second positioning groove (17) and the first positioning groove (16).

3. The coal experimental sample preparation device according to claim 1, characterized in that: The end of the crushing head (11) away from the fixed rod (10) is inclined.

4. The coal experimental sample preparation device according to claim 1, characterized in that: The rear end of the mounting shaft (9) passes through the grinding box (4) and is connected to the drive shaft of the geared motor (3). The mounting shaft (9) and the rear end of the grinding box (4) are connected by a bearing.

5. The coal experimental sample preparation device according to claim 1, characterized in that: The right end of the baffle (8) is inclined downward.

6. The coal experimental sample preparation device according to claim 1, characterized in that: The fixed rod (10) and the crushing head (11) are each provided in four sets, and the four sets of fixed rods (10) and crushing heads (11) are evenly installed on the mounting shaft (9).

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