A coal crushing device

Abstract

This utility model relates to the field of coal crushing technology, and discloses a coal crushing device, including a crushing box and a crushing mechanism body for crushing coal disposed in the inner cavity of the crushing box. The inner cavity of the crushing box is provided with a coal collecting mechanism body for receiving material. A side column is fixed on one side of the surface of the crushing box, and a shell is fixed on the surface of the side column. In use, the operator can place the coal on the surface of the second feeding shell, and under the action of the primary grinding mechanism and the first feeding shell, the coal is initially ground, thereby grinding most of the coal into the corresponding size, which is convenient for the crushing mechanism body to crush it, improving the crushing efficiency of the coal. In addition, under the action of the feeding mechanism, the ground coal can be fed, which not only controls the feeding rate, but also seals off dust, improving the comfort of the operator.

Description

Technical Field

[0001] This utility model relates to the field of coal crushing technology, specifically a coal crushing device. Background Technology

[0002] Currently, coal sample preparation strictly follows the relevant provisions of GB474-2008 "Methods for Preparing Coal Samples". Sample preparation mainly includes steps such as crushing, mixing, reduction, moisture determination, and quality analysis sample preparation. Among these, crushing is a relatively important step. The purpose of crushing is to reduce the particle size of the coal sample, increase the dispersibility of various particles in the sample, and reduce the reduction error.

[0003] According to the Chinese Utility Model Publication CN222913256U, a coal sample preparation and crushing device is disclosed. The coal sample preparation and crushing device includes a main body, a shaft is rotatably connected inside the main body, a gear is fixedly installed at one end of the shaft, the number of gears is set to two, the two gears are arranged in a meshing manner, a motor is fixedly installed on one side of the main body, the gear is fixedly installed at the output end of the motor, and a crushing roller is fixedly installed at the end of the shaft away from the gear.

[0004] When in use, the device can block the dust generated inside the crushing chamber through the elastic dustproof plate, thereby preventing the dust from spreading outward. However, the elastic dustproof plate cannot control the quantity and speed of coal feeding. During a single operation, the operator needs to place the coal on the surface of the elastic dustproof plate multiple times, which not only reduces the coal crushing rate but also increases the workload of the operator. Utility Model Content

[0005] The purpose of this invention is to provide a coal crushing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal crushing device, including a crushing box, and further comprising: A crushing mechanism body for crushing coal is set in the inner cavity of the crushing box. A coal collecting mechanism body for receiving material is set in the inner cavity of the crushing box. A side column is fixed on one side of the surface of the crushing box, and an organic shell is fixed on the surface of the side column. A feeding pipe is connected to the surface of the crushing box. The other end of the feeding pipe is connected to a first feeding shell, and the other end of the first feeding shell is connected to a second feeding shell. The inner cavity of the machine shell is provided with a primary grinding mechanism for preliminary grinding of coal, and the other end of the primary grinding mechanism is provided with a feeding mechanism for discharging material.

[0007] Preferably, the preliminary research mechanism includes a motor fixed to the inner cavity of the housing, the output shaft of the motor is fixed with a first transmission rod, the surface of the first transmission rod is fixed with a grinding block, the grinding block is conical and has a guide groove on its surface.

[0008] Preferably, the first feeding shell is a hollow frustum, and the horizontal distance from the inner wall of the first feeding shell to the grinding block decreases from top to bottom.

[0009] Preferably, the feeding mechanism includes a second transmission rod fixed to one end of the first transmission rod, and a feeding auger is fixed to the surface of the second transmission rod. The feeding auger rotates in contact with the inner cavity of the feeding pipe.

[0010] Preferably, a support member is rotatably provided at the other end of the second transmission rod, and the other end of the support member is fixed to the inner cavity of the crushing box.

[0011] Preferably, an auxiliary block is fixed to the surface of the first transmission rod. The auxiliary block is conical, and the connection between the auxiliary block and the grinding block is chamfered.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, workers can place coal on the surface of the second feeding shell, and under the action of the primary grinding mechanism and the first feeding shell, the coal is initially ground, thereby grinding most of the coal into the appropriate size, which facilitates the crushing mechanism to break it, improving the crushing efficiency of the coal. In addition, under the action of the feeding mechanism, the ground coal can be fed, which not only controls the feeding rate, but also blocks dust, improving the comfort of the workers. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0014] In the diagram: 1. Crushing box; 2. Crushing mechanism body; 3. Coal collecting mechanism body; 4. Side column; 5. Machine casing; 6. Feeding pipe; 7. First feeding shell; 8. Second feeding shell; 9. Preliminary grinding mechanism; 91. Motor; 92. First transmission rod; 93. Grinding block; 10. Feeding mechanism; 101. Second transmission rod; 102. Feeding auger; 11. Support component; 12. Auxiliary block. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Please see Figure 1-4 As shown, a coal crushing device includes a crushing box 1. The inner cavity of the crushing box 1 houses a crushing mechanism body 2 for crushing coal and a coal collecting mechanism body 3 for receiving material. A side column 4 is fixed to one side of the surface of the crushing box 1, and a housing 5 is fixed to the surface of the side column 4. A feeding pipe 6 connects to the surface of the crushing box 1, and the other end of the feeding pipe 6 connects to a first feeding shell 7. The other end of the first feeding shell 7 connects to a second feeding shell 8. The inner cavity of the housing 5 houses a preliminary grinding mechanism 9 for initial grinding of the coal. The preliminary grinding mechanism 9 includes a motor 91 fixed to the inner cavity of the housing 5. A first transmission rod 92 is fixed to the output shaft of the motor 91, and an auxiliary block 12 is fixed to the surface of the first transmission rod 92. The auxiliary block 12 is conical, and the connection between the auxiliary block 12 and the grinding block 93 is... The chamfering facilitates the entry of coal balls from the second feeding shell 8 into the working areas of the grinding block 93 and the first feeding shell 7, improving the practicality of the device. The grinding block 93 is fixed to the surface of the first transmission rod 92. The grinding block 93 is conical and has a guide groove on its surface. The first feeding shell 7 is a hollow frustum. The horizontal distance from the inner wall of the first feeding shell 7 to the grinding block 93 decreases from top to bottom. Under the action of the motor 91, the first transmission rod 92 can rotate, and the grinding block 93 fixed to the surface of the first transmission rod 92 can also rotate. When the grinding block 93 rotates, the coal can be ground under the combined action of the grinding block 93 and the first feeding shell 7. With the gradual decrease in size from top to bottom and the action of the guide groove, the coal is initially ground and sent to the feeding pipe 6.

[0017] The other end of the primary grinding mechanism 9 is provided with a feeding mechanism 10 for discharging material. The feeding mechanism 10 includes a second transmission rod 101 fixed to one end of the first transmission rod 92. A feeding auger 102 is fixed to the surface of the second transmission rod 101. The feeding auger 102 rotates in contact with the inner cavity of the feeding pipe 6. With the arrangement of the second transmission rod 101 and the feeding auger 102, when the first transmission rod 92 rotates, the feeding auger 102 can rotate, thereby conveying the pre-ground coal ore into the crushing box 1. A support member 11 is rotatably provided at the other end of the second transmission rod 101. The other end of the support member 11 is fixed to the inner cavity of the crushing box 1. The support member 11 provides a limit for the rotation of the second transmission rod 101 and improves the stability of the second transmission rod 101 when rotating.

[0018] Working principle: During use, the operator places the coal to be crushed into the second feeding shell 8. Then, using the motor 91, the grinding block 93 rotates under the action of the first transmission rod 92. At this time, under the combined action of the second feeding shell 8 and the auxiliary block 12, the coal slides into the working area of ​​the grinding block 93 and the first feeding shell 7. With the grinding block 93 decreasing in size from top to bottom and the guide groove on the surface of the grinding block 93, the coal is initially ground and sent to the feeding pipe 6. The second transmission rod 101, fixed to the other end of the first transmission rod 92, can then rotate the feeding auger 102, thereby causing the feeding auger 102 to send the coal into the crushing box 1. The crushing mechanism body 2 crushes the coal. The working principle of the crushing mechanism body 2 can be referred to in the coal sample crushing device with announcement number CN222913256U. Furthermore, the sealing of the feeding auger 102 can also play a dust prevention role, improving the practicality of this device.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A coal crushing device, comprising a crushing box (1), characterized in that, Also includes: A crushing mechanism body (2) for crushing coal is provided in the inner cavity of the crushing box (1). A coal collecting mechanism body (3) for receiving material is provided in the inner cavity of the crushing box (1). A side column (4) is fixed on one side of the surface of the crushing box (1). A shell (5) is fixed on the surface of the side column (4). A feeding pipe (6) is connected to the surface of the crushing box (1). The other end of the feeding pipe (6) is connected to a first feeding shell (7). The other end of the first feeding shell (7) is connected to a second feeding shell (8). The inner cavity of the machine shell (5) is provided with a primary grinding mechanism (9) for preliminary grinding of coal. The other end of the primary grinding mechanism (9) is provided with a feeding mechanism (10) for discharging material.

2. The coal crushing device according to claim 1, characterized in that: The preliminary research mechanism (9) includes a motor (91) fixed in the inner cavity of the housing (5). The output shaft of the motor (91) is fixed with a first transmission rod (92). A grinding block (93) is fixed on the surface of the first transmission rod (92). The grinding block (93) is tapered and has a guide groove on its surface.

3. A coal crushing device according to claim 2, characterized in that: The first feeding shell (7) is a hollow truncated cone, and the horizontal distance from the inner wall of the first feeding shell (7) to the grinding block (93) decreases from top to bottom.

4. A coal crushing device according to claim 2, characterized in that: The feeding mechanism (10) includes a second transmission rod (101) fixed to one end of the first transmission rod (92), and a feeding auger (102) is fixed on the surface of the second transmission rod (101). The feeding auger (102) rotates in contact with the inner cavity of the feeding pipe (6).

5. A coal crushing device according to claim 4, characterized in that: The other end of the second transmission rod (101) is rotatably provided with a support member (11), and the other end of the support member (11) is fixed to the inner cavity of the crushing box (1).

6. A coal crushing device according to claim 2, characterized in that: An auxiliary block (12) is fixed on the surface of the first transmission rod (92). The auxiliary block (12) is conical, and the connection between the auxiliary block (12) and the grinding block (93) is chamfered.

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