Pulverized coal mixing and destaticizing device

Abstract

A pulverized coal mixing and static electricity removing device comprises a main machine frame, a coal sample bottle, a coal sample bottle clamping and rotating module, a conductive brush and a conductive grounding end, the coal sample bottle clamping and rotating module and the conductive brush are both installed on the main machine frame, the coal sample bottle clamping and rotating module comprises a supporting frame, a rotating shaft, a fixed clamping jaw and a servo motor, the supporting frame is installed on the main machine frame, and the rotating shaft is installed on the supporting frame. The servo motor is installed on the supporting frame, the output end of the servo motor is connected with the rotating shaft and rotates synchronously with the rotating shaft, and the rotating shaft is connected with the fixed clamping jaw. The conductive brush is arranged right above the coal sample bottle, the conductive grounding end is connected with the conductive brush and is grounded, the servo motor drives the rotating shaft and the fixed clamping jaw to rotate, so that the coal sample bottle rotates in situ, the end part of the conductive brush is in contact with coal powder in the coal sample bottle, the coal sample is loosened, and static electricity is continuously conducted away; the container rotates and the conductive brush circumferentially and reciprocatingly moves in the coal sample, so that uniform stirring and static electricity removal are performed without dead angles, static electricity is directly conducted away, and the influence of the subsequent coal sample on weighing of the balance is avoided.

Description

Technical Field

[0001] This invention relates to coal sample preparation and analysis, and in particular to a coal powder mixing and static electricity removal device. Background Technology

[0002] In the field of coal quality analysis, sample preparation is required before industrial and elemental analysis of coal samples. The sample preparation process involves crushing, mixing, and reduction. Meanwhile, calorific value analysis, industrial analysis, and elemental analysis are gradually being automated and unmanned. The first step in unmanned analysis is automated sample preparation. After the sample is prepared in the automated sample preparation stage, it is reduced to 60-80 grams, bottled, and then fed into the unmanned analyzer via pneumatic conveying.

[0003] For unmanned testing, only about 10-12 grams of coal sample are typically required for analysis. This necessitates further mixing of the sample in the rotary bottle to ensure representativeness. Currently, the mixing method used in the market generally involves rotating the sealed coal bottle horizontally and vertically to thoroughly mix the coal sample.

[0004] Since the coal sample is a 0.2mm powder, dust is easily generated during the shaking process. In addition, the coal sample bottle is generally made of plastic, which can easily generate static electricity and clumping when the sample bottle is shaken during air delivery in dry weather such as winter, affecting the subsequent weighing by the balance in unattended testing. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the existing technology that sample bottles are prone to static electricity and clumping, which affects the subsequent weighing of the balance in unmanned testing, and to provide a coal powder mixing and static electricity removal device.

[0006] The technical solution adopted by this invention to solve its technical problem is a coal powder mixing and static electricity removal device, including a main frame, a coal sample bottle, a coal sample bottle clamping and rotating module, a conductive brush, and a conductive grounding terminal. The coal sample bottle clamping and rotating module and the conductive brush are both mounted on the main frame. The coal sample bottle clamping and rotating module includes a support frame, a rotating shaft, a fixed gripper, and a servo motor. The support frame is mounted on the main frame, and the servo motor is mounted on the support frame. The output end of the servo motor is connected to the rotating shaft and rotates synchronously. The rotating shaft is connected to the fixed gripper to fix the coal sample bottle while achieving rotation. The conductive brush is located directly above the coal sample bottle, and the conductive grounding terminal is connected to the conductive brush and grounded. The servo motor drives the rotating shaft and the fixed gripper to rotate, causing the coal sample bottle to rotate in place. The end of the conductive brush contacts the coal powder inside the coal sample bottle, loosening the coal sample and continuously conducting away static electricity.

[0007] Furthermore, it also includes a conductive brush moving vibration module, which includes a mounting frame, a vertical linear module, a vertical motor, and a conductive mounting plate. The mounting frame is fixed on the main frame, the vertical linear module is fixedly mounted on the mounting frame, and the vertical motor is connected to the vertical linear module. The conductive brush is connected to the conductive mounting plate, and the conductive mounting plate is connected to the vertical linear module to realize the up and down movement of the conductive brush.

[0008] Furthermore, the coal sample bottle clamping and rotating module also includes a pneumatic gripper and a pneumatic power component. The pneumatic gripper is connected to the pneumatic power component and is mounted above the pneumatic power component. The pneumatic power component is mounted on the top of the rotating shaft and rotates synchronously. The fixed gripper and the pneumatic gripper are arranged alternately.

[0009] Furthermore, the coal sample bottle clamping and rotating module also includes a pneumatic slip ring and a synchronization component. The pneumatic slip ring is coaxially mounted at the bottom of the rotating shaft, the servo motor is located on the side of the rotating shaft, and the synchronization component includes a synchronization belt and a synchronization pulley. The synchronization pulley rotates coaxially at the output end of the rotating shaft and the servo motor, and the synchronization pulley meshes with the synchronization belt.

[0010] Furthermore, the conductive brush moving vibration module also includes a vertical fixing plate, a horizontal linear module, and a horizontal motor. The vertical fixing plate is fixed on the slide table of the vertical linear module, the horizontal linear module is mounted on the vertical fixing plate, the horizontal motor is connected to one side of the horizontal linear module, and the conductive brush is located on the side of the horizontal linear module away from the horizontal motor.

[0011] Furthermore, the conductive brush moving vibration module also includes a horizontal motion plate and a conductive mounting plate. The horizontal motion plate is mounted on the slide table of the horizontal linear module, the conductive mounting plate is connected to the horizontal motion plate, and the conductive brush is fixed on the conductive mounting plate.

[0012] Furthermore, the conductive brush moving vibration module also includes a vibrator, which is fixed on a horizontal moving plate and connected to a conductive mounting plate.

[0013] Furthermore, the conductive grounding terminal is connected to the mounting bracket.

[0014] Furthermore, the conductive brush is made of copper and is formed by hinged multiple copper wires.

[0015] Furthermore, the copper wire is needle-shaped.

[0016] In summary, the present invention has the following beneficial technical effects: By moving the conductive brush vertically and horizontally, it comes into contact with the coal sample bottle. The copper conductive brush conducts static electricity away. Simultaneously, the conductive brush vibrates under the action of a vibrator, and the moving conductive brush continuously "breaks up" small coal lumps with the vibration, effectively preventing dust and dissipating any potential static electricity. At the same time, the rotation of the container and the circumferential and back-and-forth movement of the conductive brush in the coal sample thoroughly mixes and removes static electricity, directly conducting it away and preventing the coal sample from affecting the subsequent weighing on the balance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a coal powder mixing and destatication device according to the present invention; Figure 2 This is a schematic diagram of the coal sample bottle clamping and rotating module structure of an embodiment of the coal powder mixing and destatic device of the present invention. Figure 3 This is a schematic diagram of the conductive brush moving vibration module structure of an embodiment of the coal powder mixing and static electricity removal device of the present invention. Figure 4 This is a three-dimensional structural schematic diagram of an embodiment of a coal powder mixing and static electricity removal device according to the present invention.

[0018] Explanation of reference numerals in the attached figures: 100. Coal sample bottle clamping and rotating module; 101. Support frame; 102. Pneumatic slip ring; 103. Rotating shaft; 104. Pneumatic power component; 105. Fixed gripper; 106. Pneumatic gripper; 107. Servo motor; 108. Synchronization component; 200. Conductive brush; 300. Conductive brush moving vibration module; 301. Mounting frame; 302. Vertical linear module; 303. Vertical motor; 304. Vertical fixing plate; 305. Horizontal linear module; 306. Horizontal motor; 307. Vibrator; 308. Horizontal moving plate; 309. Conductive mounting plate; 400. Conductive grounding terminal; 500. Main frame; 600. Coal sample bottle. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1 This embodiment includes a main frame 500, a coal sample bottle clamping and rotating module 100, a conductive brush 200, a conductive brush moving and vibrating module 300, and a conductive grounding terminal 400. It also includes a coal sample bottle 600, which is a bottle-shaped body made of engineering plastic and has an openable cap. The coal sample bottle clamping and rotating module 100 and the conductive brush moving and vibrating module 300 are fixed on the main frame 500. The coal sample bottle 600 is mounted on the coal sample bottle clamping and rotating module 100, and the conductive brush 200 and the conductive grounding terminal 400 are mounted on the conductive brush moving and vibrating module 300. The conductive grounding terminal 400 is in contact with the ground.

[0021] Reference Figure 2 The coal sample bottle clamping and rotating module 100 includes a support frame 101, a pneumatic slip ring 102, a rotating shaft 103, a pneumatic power component 104, a fixed gripper 105, a pneumatic gripper 106, a servo motor 107, and a synchronization component 108. The support frame 101 is fixedly mounted on the main frame 500 via aluminum profiles. The rotating shaft 103 and the servo motor 107 are mounted on the support frame 101, one on the left and one on the right. The synchronization component 108 connects the rotating shaft 103 and the servo motor 107, allowing the power of the servo motor 107 to be transmitted to the rotating shaft 103. Specifically, the synchronization component 108 includes a timing belt and two timing pulleys. The timing pulleys rotate coaxially with the output ends of the rotating shaft 103 and the servo motor 107, while the timing belt simultaneously engages with both timing pulleys.

[0022] Reference Figure 2 A pneumatic power component 104 is fixedly mounted on the top of the rotating shaft 103, and the pneumatic power component 104 is connected to the pneumatic gripper 106 to provide power to the pneumatic gripper 106. The pneumatic gripper 106 consists of two symmetrical arc-shaped grippers, and the fixed gripper 105 consists of two symmetrical triangular grippers. The pneumatic gripper 106 and the fixed gripper 105 are mounted together and located on top of the pneumatic power component 104. The pneumatic gripper 106 is mounted on the surface of the fixed gripper 105, or the fixed gripper 105 is mounted on the surface of the pneumatic gripper 106, and the pneumatic gripper 106 and the fixed gripper 105 are staggered, that is, the pneumatic gripper 106 clamps left and right, and the fixed gripper 105 clamps front and back. In this embodiment, when the coal sample bottle 600 is placed on the coal sample bottle clamping and rotating module 100, its movement is first restricted by the fixed gripper 105, and then the pneumatic gripper 106 retracts, and the arc-shaped gripper completely surrounds the coal sample bottle 600 to achieve the restriction effect. In this embodiment, the pneumatic power component 104 is a cylinder, and the pneumatic slip ring 102 is coaxially mounted on the bottom of the rotating shaft 103. This ensures rotational freedom while preventing gas leakage, thereby achieving stable gas transmission during rotation of the pneumatic power component 104.

[0023] When the servo motor 107 is running, the power of the servo motor 107 is transmitted to the rotating shaft 103 through the synchronous pulley and synchronous belt of the synchronous component 108, which drives the rotating shaft 103 to rotate, thereby rotating the pneumatic power component 104. Before this, the pneumatic power component 104 works to drive the pneumatic gripper 106 to retract, so as to cooperate with the fixed gripper 105 to clamp the coal sample bottle 600. Then, under the action of the servo motor 107, the coal sample bottle 600 rotates. During this process, the pneumatic slip ring 102 ensures that the conduit connected to the pneumatic power component 104 will not get tangled due to rotation, but will rotate synchronously.

[0024] Reference Figure 3The conductive brush moving vibration module 300 includes a mounting frame 301, a vertical linear module 302, a vertical motor 303, a vertical fixing plate 304, a horizontal linear module 305, a horizontal motor 306, a vibrator 307, a horizontal moving plate 308, and a conductive mounting plate 309. In addition, the conductive brush moving vibration module 300 also includes a horizontal crossbar, which is fixedly installed to the main frame 500, and the mounting frame 301 is fixed to the horizontal crossbar, thereby realizing the connection between the mounting frame 301 and the main frame 500. A vertical linear module is fixed to a mounting bracket 301. A vertical motor 303 is connected to the bottom of the vertical linear module to provide power. A vertical fixing plate 304 is mounted on the slide of the vertical linear module. A horizontal linear module 305 is fixed to the vertical fixing plate 304. A horizontal motor 306 is connected to the right side of the horizontal linear module 305. A horizontal motion plate 308 is fixed to the slide of the horizontal linear module 305. A vibrator 307 is fixed to the bottom of the horizontal motion plate 308. A conductive mounting plate 309 is fixed to the right side of the vibrator 307. A conductive brush 200 is mounted on the conductive mounting plate 309 and faces right. Furthermore, the horizontal motion plate is a long strip, and the left end of the horizontal motion plate 308 is fixed to the slide, allowing the conductive brush 200 to be as close as possible to the coal sample bottle 600 and positioned at the top of the coal sample bottle 600.

[0025] Driven by the vertical motor 303, the vertical linear module 302 moves its slide in the vertical direction to allow the horizontal linear module 305 to move in the vertical direction. Simultaneously, driven by the horizontal motor 306, the horizontal linear module 305 moves its slide in the planar direction, causing the horizontal motion plate 308 to move in the horizontal direction. This, in turn, causes the conductive brush 200 and the conductive mounting plate 309 to move in both the horizontal and vertical directions, moving the conductive brush 200 above and close to the coal sample bottle 600. During operation, the conductive brush 200 repeatedly contacts coal powder to break up coal clumps. Meanwhile, the vibrator 307 continuously "breaks up" small coal clumps along with the moving conductive brush 200.

[0026] The conductive brush 200 mainly consists of a conductive part and an extended part. The conductive part is the part that contacts the coal powder inside the coal sample bottle 600. It is primarily made of copper and is formed by multiple copper wires hinged together. These copper wires are needle-shaped, and the conductive part is composed of multiple needle-shaped copper wires. The brush head has at least three needle-shaped copper wires. The extended part is used to fix it to the conductive mounting plate 309. It is a long rod-shaped part and is also made of metal. The conductive grounding terminal 400 is fixedly installed on the horizontal crossbar of the conductive brush moving vibration module 300.

[0027] The implementation principle of the coal powder mixing and destatication device according to an embodiment of the present invention is as follows: During operation, the conductive brush moving vibration module 300 adjusts the position of the conductive brush 200 so that it is directly above the coal sample bottle 600. Specifically, the axis of the conductive brush 200 is not aligned with the axis of the coal sample bottle 600, but at the same time, the copper wire of the conductive brush 200 closest to the axis of the coal sample bottle 600 is aligned with the axis as much as possible. Then, the vertical linearity module moves the conductive brush 200 downward so that the end of the conductive brush 200 comes into contact with the coal powder inside the coal sample bottle 600. The servo motor 107 of the coal sample bottle clamping rotation module 100 rotates at 20-40 rpm. The coal sample rotates at a low and uniform speed. During this process, the vertical linear module drives the conductive brush 200 to move up and down slowly. At the same time, the vibrator 307 drives the part of the conductive brush 200 that is in contact with the coal sample to vibrate. During this process, the rotating coal bottle causes the coal powder to move relative to the conductive brush 200, which loosens the coal sample. The moving conductive brush 200 continuously "breaks" the small coal clumps under vibration. While moving, it also continuously disturbs the small coal clumps and conducts static electricity away. After processing for 4-6 minutes, a loose, uniform, and static-free coal sample can be obtained.

[0028] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A coal powder mixing and static electricity removal device, characterized in that, The system includes a main frame (500), a coal sample bottle (600), a coal sample bottle clamping and rotating module (100), a conductive brush (200), a conductive brush moving and vibrating module (300), and a conductive grounding terminal (400). Both the coal sample bottle clamping and rotating module (100) and the conductive brush moving and vibrating module (300) are mounted on the main frame (500). The coal sample bottle clamping and rotating module (100) includes a support frame (101), a rotating shaft (103), a fixed gripper (105), and a servo motor (107). The support frame (101) is mounted on the main frame (500), and the servo motor (107) is mounted on the support frame (101). The output end of the servo motor (107) is connected to the rotating shaft (103) and rotates synchronously. The rotating shaft (103) is connected to the fixed gripper (105) to fix the coal sample bottle (600) while rotating it; the conductive brush (200) is mounted on the conductive brush moving vibration module (300) and located above the coal sample bottle (600); the conductive grounding terminal (400) is connected to the conductive brush moving vibration module (300) and grounded; the conductive brush moving vibration module (300) is used to move the conductive brush (200) in the horizontal and vertical directions; the servo motor (107) drives the rotating shaft (103) and the fixed gripper (105) to rotate, so that the coal sample bottle (600) rotates in place; the end of the conductive brush (200) contacts the coal powder in the coal sample bottle (600), so that the coal sample is loosened and static electricity is continuously conducted away.

2. The coal powder mixing and static electricity removal device according to claim 1, characterized in that, The conductive brush moving vibration module (300) includes a mounting frame (301), a vertical linear module (302), a vertical motor (303), and a conductive mounting plate (309). The mounting frame (301) is fixed on the main frame (500), the vertical linear module (302) is fixedly mounted on the mounting frame (301), and the vertical motor (303) is connected to the vertical linear module (302). The conductive brush (200) is connected to the conductive mounting plate (309), and the conductive mounting plate (309) is connected to the vertical linear module (302) to realize the up and down movement of the conductive brush (200).

3. The coal powder mixing and static electricity removal device according to claim 1, characterized in that, The coal sample bottle clamping and rotating module (100) further includes a pneumatic gripper (106) and a pneumatic power component (104). The pneumatic gripper (106) is connected to the pneumatic power component (104), and the pneumatic gripper (106) is installed above the pneumatic power component (104). The pneumatic power component (104) is installed on the top of the rotating shaft (103) and rotates synchronously. The fixed gripper (105) and the pneumatic gripper (106) are arranged alternately.

4. The coal powder mixing and static electricity removal device according to claim 3, characterized in that, The coal sample bottle clamping and rotating module (100) also includes a pneumatic slip ring (102) and a synchronization component (108). The pneumatic slip ring (102) is coaxially mounted on the bottom of the rotating shaft (103). The servo motor (107) is located on the side of the rotating shaft (103). The synchronization component (108) includes a timing belt and a timing pulley. The timing pulley rotates coaxially at the output end of the rotating shaft (103) and the servo motor (107). The timing pulley meshes with the timing belt.

5. The coal powder mixing and static electricity removal device according to claim 2, characterized in that, The conductive brush moving vibration module (300) also includes a vertical fixing plate (304), a horizontal linear module (305), and a horizontal motor (306). The vertical fixing plate (304) is fixed on the slide of the vertical linear module (302). The horizontal linear module (305) is mounted on the vertical fixing plate (304). The horizontal motor (306) is connected to one side of the horizontal linear module (305). The conductive brush (200) is located on the side of the horizontal linear module (305) away from the horizontal motor (306).

6. The coal powder mixing and static electricity removal device according to claim 5, characterized in that, The conductive brush moving vibration module (300) further includes a horizontal motion plate (308) and a conductive mounting plate (309). The horizontal motion plate (308) is mounted on the slide of the horizontal linear module (305). The conductive mounting plate (309) is connected to the horizontal motion plate (308), and the conductive brush (200) is fixed on the conductive mounting plate (309).

7. The coal powder mixing and static electricity removal device according to claim 6, characterized in that, The conductive brush moving vibration module (300) also includes a vibrator (307), which is fixed on a horizontal moving plate (308) and connected to a conductive mounting plate (309).

8. The coal powder mixing and static electricity removal device according to claim 2, characterized in that, The conductive grounding terminal (400) is connected to the mounting bracket (301).

9. The coal powder mixing and static electricity removal device according to claim 1, characterized in that, The conductive brush (200) is made of copper and is formed by multiple copper wires hinged together.

10. The coal powder mixing and static electricity removal device according to claim 9, characterized in that, The copper wire is needle-shaped.

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