CN111359760A - Coal sample reducing mechanism - Google Patents

Abstract

The invention relates to a coal sample crushing device, comprising a device casing, a rough grinding mechanism, a fine grinding mechanism and a screening mechanism. The fine grinding mechanism comprises a mounting bracket connected to the inner wall of the device shell and a vertical vibration The motor, the bracket connected with the vertical vibration motor, the fine grinding box arranged on the bracket, the flexible blanking pipe connected to the upper end of the fine grinding box, the blanking pipe connected to the lower end of the fine grinding box, the The first spring between the two and the vibration connecting plate connected to the lower end of the vertical vibration motor, the screening mechanism includes a first screening plate, a second screening plate, a third screening plate, a second spring and several screening outlets. The coal sample pulverizing device can make the coal sample pulverization more thoroughly after multiple grinding, and at the same time through vibration grinding, the ground coal samples can be vibrated and collected, and the coal samples can be collected by classification, which greatly reduces the energy consumption of the device, and The classification and collection of coal samples are more accurate.

Description

A coal sample crushing device

technical field

The invention belongs to the field of coal sample crushing devices, in particular to an efficient and energy-saving coal sample crushing device.

Background technique

The coal sample pulverizer adopts a vibrating pulverizer. There is a solid cylinder in the middle of the concentric rings with a certain gap in the steel body cup. Then cover it and fix it on the motor-driven disc. The motor drives the disc. Vibrate, thereby driving the steel rings in the cup to collide with each other to crush the coal sample, then take out the coal sample and manually screen it with the corresponding mesh screen. In this way, the manual workload of the coal sample pulverizing method is not only cumbersome, but also takes a long time to make the coal sample, and the pulverized coal produced has certain errors.

However, some coal sample crushing devices use a tool sample crusher, which will generate a large amount of dust and fine particles during the crushing process, which is easy to remain and adhere to the steel wall of the crushing tool, resulting in the loss of the sample and is not conducive to Dismantling and cleaning. After crushing, it is necessary to manually screen the coal samples, and the problem is still not solved. In addition, after the experiment, the residual samples on the screen should be cleaned manually.

For example, an integrated machine for pulverizing and screening coal samples disclosed in the patent number CN106040354B, which is also a tool for grinding, uses a fan to collect pulverized coal during vibration screening, which has a certain collection error, and it is easy to remove some small The pulverized coal is collected together with some larger pulverized coal, and different driving devices are used for fine grinding and screening, which consumes a lot of energy.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a coal sample crushing device with simple structure, reasonable design, high efficiency and energy saving in order to solve the above problems.

The present invention realizes above-mentioned purpose through following technical scheme:

A coal sample crushing device, comprising a device casing, a rough grinding mechanism, a fine grinding mechanism and a screening mechanism, wherein the fine grinding mechanism comprises a mounting frame connected to the inner wall of the device casing, a vertical vibration motor arranged on the mounting frame, and The bracket connected to the vertical vibration motor, the fine grinding box arranged on the bracket, the flexible blanking pipe connected to the upper end of the fine grinding box, the blanking pipe connected to the lower end of the fine grinding box, and the first A spring and a vibration connecting plate connected to the lower end of the vertical vibration motor, the screening mechanism includes a first screening plate, a second screening plate, a third screening plate, a second spring and a number of screening outlets, the first screening plate The screening plate, the second screening plate and the third screening plate are all connected by a second spring, and the first screening plate is connected with the vibration connection plate.

As a further optimized solution of the present invention, the rough grinding mechanism includes a grinding box, a motor arranged on the upper end of the grinding box, a feeding port arranged on the side wall of the grinding box, a crushing blade connected to the output shaft of the motor, and a motor connected to the motor. The stirring rod at the end of the output shaft and the discharge pipe arranged at the bottom of the grinding box are connected with the flexible blanking pipe.

As a further optimization scheme of the present invention, the first screening plate and the second screening plate are provided with several screening holes, and the diameter of the screening holes on the first screening plate is larger than the diameter of the screening holes on the second screening plate diameter.

As a further optimization scheme of the present invention, the angles between the first screening plate, the second screening plate and the third screening plate and the horizontal plane are all 20°-30°, and the first screening plate, the second screening plate And the end of the third screening plate is in contact with the inner wall of the device housing.

As a further optimized solution of the present invention, the screening outlet is provided on the device shell, and several screening outlets are respectively arranged corresponding to the first screening plate, the second screening plate and the third screening plate.

As a further optimized solution of the present invention, several collection boxes are detachably connected to the outer wall of the device casing, and the collection boxes are arranged just below the screening outlet.

As a further optimized solution of the present invention, the lower end of the feeding pipe is located directly above the first screening plate, and the first screening plate, the second screening plate and the third screening plate are all provided with side baffles.

The beneficial effects of the present invention are:

1) In the present invention, when the coal sample is pulverized, the coal sample is firstly transported into the rough grinding mechanism through the feeding port, and the motor in the rough grinding mechanism drives the crushing blade and the stirring rod to rough process the coal sample, and is broken after processing. The ground coal sample is transported to the flexible blanking pipe through the discharge pipe. The vertical vibration motor in the fine grinding mechanism works and drives the bracket and the fine grinding box to vibrate. During vibration, the coal sample in the flexible blanking pipe falls into the flexible blanking pipe. The fine grinding is carried out in the fine grinding box, and the finely ground pulverized coal is transported to the screening mechanism through the unloading pipeline. The multiple screening plates in the screening mechanism are driven by the vertical vibration motor to vibrate up and down, which can make it fall in the first place. The pulverized coal on the screening plate moves, and after passing through the screening holes on the first screening plate, the pulverized coal smaller than the screening hole falls into the second screening plate of the next layer, and the pulverized coal smaller than the screening hole on the second screening plate It will also fall into the third screening plate during the vibration process, and the pulverized coal on the three screening plates will gradually fall into the corresponding collection box under the action of vibration, so as to achieve a more accurate and differentiated collection of pulverized coal and prevent particles of different sizes. The pulverized coal is mixed together again;

2) The present invention utilizes a vertical vibration motor to complete the functions of fine grinding and screening, greatly reduces the energy consumption of the device, and more accurately distinguishes and collects pulverized coal;

3) The present invention has the advantages of simple structure, high stability, reasonable design and easy realization.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the structural representation of rough grinding mechanism in the present invention;

Fig. 3 is the structural representation of fine grinding mechanism in the present invention;

Fig. 4 is the structural representation of screening mechanism in the present invention;

FIG. 5 is a schematic structural diagram of the first screening plate in the present invention.

In the figure: 1. Device shell; 2. Rough grinding mechanism; 201, grinding box; 202, motor; 203, feeding port; 204, crushing blade; 205, stirring rod; 206, discharge pipe; ;301, vertical vibration motor; 302, bracket; 303, fine grinding box; 304, flexible blanking pipe; 305, blanking pipe; 306, first spring; 307, mounting frame; 308, vibration connecting plate; 4, screening mechanism; 401, first screening plate; 402, second screening plate; 403, screening outlet; 404, third screening plate; 405, second spring; 5, collecting box.

Detailed ways

The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and should not be construed as limiting the protection scope of the application. Those skilled in the art can The above application content makes some non-essential improvements and adjustments to this application.

Example 1

As shown in Figures 1-5, a coal sample crushing device includes a device casing 1, a rough grinding mechanism 2, a fine grinding mechanism 3 and a screening mechanism 4;

The rough grinding mechanism 2 includes a grinding box 201, a motor 202 arranged on the upper end of the grinding box 201, a feed port 203 arranged on the side wall of the grinding box 201, a crushing blade 204 connected to the output shaft of the motor 202, and an output shaft connected to the motor 202. The stirring rod 205 at the end of the shaft and the discharge pipe 206 located at the bottom of the grinding box 201, the discharge pipe 206 is connected with the flexible blanking pipe 304, and the coal sample is transported into the rough grinding mechanism 2 through the feeding port 203, and the rough grinding mechanism The motor 202 in 2 drives the crushing blade 204 and the stirring rod 205 to rough process the coal sample;

The fine grinding mechanism 3 includes a mounting frame 307 connected to the inner wall of the device casing 1 , a vertical vibration motor 301 arranged on the mounting frame 307 , a bracket 302 connected with the vertical vibration motor 301 , and a fine grinding box arranged on the bracket 302 303. The flexible blanking pipe 304 connected to the upper end of the fine grinding box 303, the unloading pipe 305 connected to the lower end of the fine grinding box 303, the first spring 306 arranged between the bracket 302 and the mounting frame 307, and connected to the vertical vibration The vibration connecting plate 308 at the lower end of the motor 301, the screening mechanism 4 includes a first screening plate 401, a second screening plate 402, a third screening plate 404, a second spring 405 and a number of screening outlets 403, the first screening plate 401, The second screening plate 402 and the third screening plate 404 are connected by the second spring 405, the first screening plate 401 is connected with the vibration connecting plate 308; the first screening plate 401 and the second screening plate 402 are provided with several Screening holes, the diameter of the screening holes on the first screening plate 401 is larger than the diameter of the screening holes on the second screening plate 402, and without the action of the fan, the effect of layer-by-layer screening of pulverized coal is achieved; The included angles between the second screening plate 402 and the third screening plate 404 and the horizontal plane are both 20°-30°, which is convenient for the pulverized coal on the screening plate to move from the high end to the low end during the vibration process. The first screening plate 401 , The ends of the second screening plate 402 and the third screening plate 404 are in contact with the inner wall of the device casing 1, which can prevent the coal powder from falling from the screening plate into the screening outlet 403 from spilling, and the lower end of the feeding pipe 305 is located in the first screening Right above the plate 401, the first screening plate 401, the second screening plate 402 and the third screening plate 404 are all provided with side baffles to prevent coal dust from spilling from both sides of the screen plate during the vibration movement process;

After processing, the crushed and ground coal samples are transported to the flexible blanking pipe 304 through the discharge pipe 206. The vertical vibration motor 301 in the fine grinding mechanism 3 works and drives the support 302 and the fine grinding box 303 to vibrate. , the coal sample in the flexible blanking pipe 304 falls into the fine grinding box 303 for fine grinding, and the finely ground coal powder is transported to the screening mechanism 4 through the blanking pipe 305, and a plurality of screening plates in the screening mechanism 4 are subjected to vertical grinding. Driven by the type vibration motor 301, it vibrates up and down, so that the pulverized coal falling on the first screening plate 401 can move. After passing through the screening holes on the first screening plate 401, the pulverized coal smaller than the screening holes falls into the next layer. The second screening plate 402, and the pulverized coal smaller than the screening holes on the second screening plate 402 will also fall on the third screening plate 404 during the vibration process;

The screening outlet 403 is arranged on the device casing 1, and several screening outlets 403 are respectively arranged corresponding to the first screening plate 401, the second screening plate 402 and the third screening plate 404; the outer wall of the device casing 1 is detachable There are several collection boxes 5 connected in a way, and the collection boxes 5 are arranged just below the screening outlet 403. The coal powder on the three screening plates gradually falls into the corresponding collection boxes 5 under the action of vibration, so as to achieve more accurate The pulverized coal is collected separately to prevent the pulverized coal of different sizes from being mixed together again.

It should be noted that, when the coal sample is crushed, the coal sample is firstly transported into the rough grinding mechanism 2 through the feeding port 203, and the motor 202 in the rough grinding mechanism 2 drives the crushing blade 204 and the stirring rod 205 to roughen the coal sample. After processing, the crushed and ground coal samples are transported to the flexible blanking pipe 304 through the discharge pipe 206, and the vertical vibration motor 301 in the fine grinding mechanism 3 works and drives the support 302 and the fine grinding box 303 to vibrate, When vibrating, the coal sample in the flexible blanking pipe 304 falls into the fine grinding box 303 for fine grinding, and the finely ground coal powder is transported to the screening mechanism 4 through the blanking pipe 305, and a plurality of screening plates in the screening mechanism 4 Driven by the vertical vibration motor 301, it vibrates up and down, so that the pulverized coal falling on the first screening plate 401 can move. The second screening plate 402 on the first floor, and the pulverized coal smaller than the screening holes on the second screening plate 402 will also fall on the third screening plate 404 during the vibration process. It gradually falls into the corresponding collection box 5, so as to achieve more accurate discriminating collection of pulverized coal, and prevent pulverized coal of different sizes from being mixed together again, and the pulverized coal in the collection box 5 corresponding to the first screening plate 401 It is larger and can be conveniently put back into the feed port 203 and processed again.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention.

Claims (7)

1. The utility model provides a coal sample reducing mechanism, includes device shell (1), coarse grinding mechanism (2), finish grinding mechanism (3) and screening mechanism (4), its characterized in that: the fine grinding mechanism (3) comprises a mounting frame (307) connected to the inner wall of the device shell (1), a vertical vibration motor (301) arranged on the mounting frame (307), a support (302) connected with the vertical vibration motor (301), a fine grinding box (303) arranged on the support (302), a flexible blanking pipeline (304) connected to the upper end of the fine grinding box (303), a blanking pipeline (305) connected to the lower end of the fine grinding box (303), a first spring (306) arranged between the support (302) and the mounting frame (307), and a vibration connecting plate (308) connected to the lower end of the vertical vibration motor (301), the screening mechanism (4) comprises a first screening plate (401), a second screening plate (402), a third screening plate (404), a second spring (405) and a plurality of screening discharge ports (403), and the first screening plate (401), the second screening plate (402) and the third screening plate (404) are all connected through the second spring (405), the first screening plate (401) is connected with a vibrating connection plate (308).

2. The coal sample crushing device according to claim 1, characterized in that: the rough grinding mechanism (2) comprises a grinding box (201), a motor (202) arranged at the upper end of the grinding box (201), a feeding hole (203) arranged on the side wall of the grinding box (201), a crushing blade (204) connected to an output shaft of the motor (202), a stirring rod (205) connected to the end part of the output shaft of the motor (202) and a discharging pipe (206) arranged at the bottom of the grinding box (201), wherein the discharging pipe (206) is connected with a flexible blanking pipeline (304).

3. The coal sample crushing device according to claim 1, characterized in that: all be equipped with a plurality of screening hole on first screening board (401) and second screening board (402), the diameter of the screening hole on first screening board (401) is greater than the diameter of the screening hole on second screening board (402).

4. A coal sample crushing apparatus as claimed in claim 3, characterized in that: the included angles between the first screening plate (401), the second screening plate (402) and the third screening plate (404) and the horizontal plane are 20-30 degrees, and the end parts of the first screening plate (401), the second screening plate (402) and the third screening plate (404) are in contact with the inner wall of the device shell (1).

5. A coal sample crushing apparatus as claimed in claim 3, characterized in that: screening discharge gate (403) are located on device shell (1), and a plurality of screening discharge gate (403) set up with first screening board (401), second screening board (402) and third screening board (404) respectively corresponding.

6. The coal sample crushing device according to claim 1, characterized in that: the device is characterized in that a plurality of collecting boxes (5) are detachably connected to the outer wall of the device shell (1), and the collecting boxes (5) are arranged under the screening discharge port (403).

7. The coal sample crushing device according to claim 1, characterized in that: the lower extreme of unloading pipeline (305) is located first screening board (401) directly over, all be equipped with the side shield on first screening board (401), second screening board (402) and third screening board (404).

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