CN106732994A - A kind of coal mining coal cinder reducing mechanism - Google Patents

Abstract

The invention discloses a coal block crushing device for coal mine development. A primary conveyor belt is arranged under the primary coal block crushing assembly to automatically transport the primary crushed coal block to the secondary coal block crushing assembly. The secondary coal block crushing assembly There is a secondary conveyor belt for loading the secondary pulverized coal at the coal outlet, and a dust cover is also provided above the secondary pulverized coal assembly. The invention can adjust the primary pulverized coal according to the needs through the adjustment plate. According to the size of the block, set the eccentric fly hammer for impact, and firstly crush the larger block of coal, and set the oscillation device to effectively prevent the block of coal from blocking the primary coal block screen and prevent the phenomenon of jamming, while the secondary crushing , the centrifugal cylinder can quickly throw out the coal lumps, throw the coal lumps to the crushing blade on the crushing cylinder, realize further crushing of the coal lumps, and effectively improve the crushing efficiency, and the rotating sleeve set at the secondary coal lump screen drop can Effectively prevent the coal from clogging the secondary coal sieve, greatly improving the crushing efficiency.

Description

Coal block crushing device for coal mine development

technical field

The invention relates to a coal block crushing device for coal mining, which belongs to the technical field of coal mining.

Background technique

In coal mining, the initially mined coal blocks are generally large and are not suitable for direct shipment. Generally, the larger coal blocks need to be crushed so that they can be directly loaded and transported after being transported out. However, one of the current coal mining crushing devices generally adopts oppositely arranged gear teeth to crush the coal block. Although the structure of this crushing device is simple, the crushing efficiency is low, and it is easy to cause jamming during the crushing process. It is easy to burn out the motor, which greatly affects the crushing efficiency of the coal block, and can't realize the crushing of the larger coal block. The other is to use vibration, which has low crushing efficiency and poor crushing uniformity, and is difficult to meet the requirements of high-efficiency coal block crushing.

Contents of the invention

Aiming at the existing technical problems, the present invention provides a coal block crushing device for coal mining, the purpose of which is to provide a coal block crushing device in order to improve the efficiency of coal block crushing and to solve the problems existing in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a coal block crushing device for coal mining, which includes a primary coal block crushing assembly, a primary conveyor belt, a secondary coal block crushing assembly and a secondary conveyor belt, characterized in that, Below the primary coal block crushing assembly, a primary conveyor belt is provided to automatically transport the primary crushed coal block to the secondary coal block crushing assembly, and the coal outlet of the secondary coal block crushing assembly is provided with a The secondary conveyor belt for loading the secondary pulverized coal lumps into vehicles, and a dust removal cover is also arranged above the secondary pulverized coal lump assembly.

Further, preferably, the primary coal crushing assembly includes an adjustment plate, a hydraulic adjustment rod, an eccentric wheel, a flyweight, a drive wheel, a drive motor, an impact base, an impact vibration block and an oscillation device, wherein the adjustment plate is set At both ends of the impact base, and the gap between the adjustment plate and the impact base constitutes the primary coal sieve drop opening after the primary coal is crushed, the upper end of the impact base is a tapered opening, and the impact vibration The block is a conical block, and the shock vibration block is slidably arranged in the tapered opening up and down, and there is a gap between the shock vibration block and the bottom wall of the tapered opening of the shock base. Oscillating device, in order to make the impact vibrating block slide up and down along the tapered opening, the size of the primary coal sieve opening between the adjustment plate and the impact base is controlled by the hydraulic adjustment rod, the The frame directly above the impact vibration block is provided with an eccentric wheel, the eccentric wheel is driven by a belt through the drive wheel, the flyweight is fixedly arranged on the eccentric wheel, and the outer surface of the flyweight is provided with A plurality of crushing blades, the upper surface of the impact vibration block and the inner surface of the adjustment plate are provided with a plurality of crushing blades, the secondary coal block crushing assembly includes a secondary pulverizer shell, a centrifugal cylinder, a crushing shaft . Centrifugal shaft and centrifuge base, wherein, the centrifuge base is set in the center of the secondary shredder shell, the centrifuge base is provided with a centrifugal shaft, and the centrifuge shaft is fixed with a centrifuge cylinder, a plurality of grinding shafts are arranged between the centrifugal cylinder and the secondary pulverizer shell, a grinding cylinder is fixedly installed on the grinding shaft, and a plurality of grinding cylinders are arranged on the outer peripheral surface of the grinding cylinder Pulverizing blades, the rotation direction of the pulverizing cylinder is opposite to that of the centrifuge cylinder, and a plurality of pulverizing blades are also arranged on the outer circumference of the centrifuge cylinder, and the bottom of the secondary pulverizer shell There is a secondary coal block sieve drop opening.

Further, as a preference, a rotating sleeve is provided on the secondary pulverizer shell near the opening of the secondary coal sieve, and the rotating sleeve is driven by a pair of meshing gears that are engaged with the pulverizing rotation.

Further, as a preference, the upper coal inlet of the secondary pulverizer shell is set under the primary conveyor belt, and the upper coal inlet of the secondary pulverizer shell is provided with a baffle to block the splashing of coal lumps. plate.

Further, preferably, the centrifuge cylinder is a conical cylinder with a small top and a large bottom, and the base of the centrifuge cylinder is fixedly arranged on the frame.

Further, preferably, the height of the rotating sleeve is lower than the height of the lowest surface of the crushing cylinder.

Further, as a preference, a negative pressure pump is connected to the dust removal hood.

Further, preferably, the centrifugal shaft is driven by a direct-drive motor, and the direct-drive motor is arranged in the base of the centrifugal cylinder.

Compared with prior art, the beneficial effect of the present invention is:

In the present invention, the size of the coal block during primary crushing can be adjusted according to the needs through the regulating plate, and an eccentric fly hammer is set to impact at the same time. The coal sieve falls to prevent the phenomenon of jamming, and when secondary crushing, the centrifugal cylinder can quickly throw the coal out, and throw the coal to the crushing blade on the crushing cylinder, so as to realize further crushing of the coal and effectively improve the crushing efficiency. efficiency, while the rotating sleeve provided at the drop opening of the secondary coal sieve can effectively prevent the coal block from clogging the drop opening of the secondary coal sieve, greatly improving the crushing efficiency. , Improve the working environment.

Description of drawings

Fig. 1 is a kind of coal mine development of the present invention uses the structural representation of coal lump crushing device;

Among them, 1. Adjustment plate, 2. Hydraulic adjustment rod, 3. Eccentric wheel, 4. Flyweight, 5. Driving wheel, 6. Driving motor, 7. Impact base, 8. Impact vibration block, 9. Oscillating device, 10 , primary conveyor belt, 11, secondary shredder shell, 12, meshing gear, 13, rotating sleeve, 14, centrifugal cylinder, 15, crushing shaft, 16, centrifugal shaft, 17, centrifuge base, 18, crushing blade, 19 , Dust collector, 20, secondary conveyor belt, 21, primary coal sieve drop, 22, secondary coal sieve drop.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, the present invention provides a technical solution: a kind of coal crushing device for coal mining, which includes a primary coal crushing assembly, a primary conveyor belt 10, a secondary coal crushing assembly and a secondary conveyor belt. That is, a primary conveyor belt 10 is provided below the primary coal block crushing assembly to automatically transport the primary crushed coal blocks to the secondary coal block crushing assembly, and the coal outlet of the secondary coal block crushing assembly is A secondary conveyor belt 20 for loading the secondary pulverized coal blocks into vehicles is provided, and a dust removal cover 19 is also provided above the secondary pulverized coal block assembly.

In this embodiment, the primary coal crushing assembly includes an adjustment plate 1, a hydraulic adjustment rod 2, an eccentric wheel 3, a flyweight 4, a driving wheel 5, a driving motor 6, an impact base 7, an impact vibration block 8 and an oscillation device 9. Wherein, the adjustment plate 1 is arranged at both ends of the impact base 7, and the gap between the adjustment plate 1 and the impact base 7 constitutes the primary coal sieve opening 21 after the primary coal is pulverized. The upper end of the shock base 7 is a tapered opening, the shock vibration block 8 is a tapered block, the shock vibration block 8 is slidably arranged in the tapered opening up and down, and the shock vibration An oscillating device 9 is arranged between the block 8 and the bottom wall of the conical opening of the impact base, so that the impact vibration block slides up and down along the conical opening, and between the adjustment plate 1 and the impact base The size of the primary coal sieve drop opening 21 is controlled by the hydraulic adjustment lever 2, and the eccentric wheel 3 is arranged on the frame directly above the impact vibration block 8, and the eccentric wheel 3 is driven by the driving wheel 6. Belt transmission is adopted. The eccentric wheel 3 is fixed with a flyweight 4. The outer surface of the flyweight 4 is provided with a plurality of crushing blades. The upper surface of the impact vibration block 8 and the inner surface of the adjustment plate A plurality of crushing blades are arranged on the surface, and the secondary coal block crushing assembly includes a secondary pulverizer shell 11, a centrifugal cylinder 14, a crushing shaft 15, a centrifugal shaft 16 and a centrifugal cylinder base 17, wherein the centrifugal The cylinder base 17 is arranged at the center of the secondary shredder shell, the centrifugal shaft 15 is arranged on the centrifugal shaft base 17, the centrifugal shaft 15 is fixedly provided with the centrifugal cylinder 14, and the centrifugal cylinder 14 and A plurality of crushing shafts 15 are arranged between the secondary shredder shells, and a crushing cylinder is fixedly arranged on the crushing shafts 15, and a plurality of crushing blades are arranged on the outer peripheral surface of the crushing cylinder. The rotation direction of the crushing cylinder is opposite to the rotation direction of the centrifugal cylinder, and a plurality of crushing blades are also arranged on the outer peripheral surface of the centrifugal cylinder, and a secondary coal block is arranged at the bottom of the secondary pulverizer shell Sieve drop.

Wherein, in order to prevent the jamming phenomenon of the coal block, a rotating sleeve 13 is provided on the secondary pulverizer shell near the opening of the secondary coal block screen, and the rotating sleeve 13 passes through a pair of meshing gears 12 Engage transmission with the said pulverizing rotation. The coal inlet at the upper end of the secondary pulverizer shell is arranged below the primary conveyor belt, and the coal inlet at the upper end of the secondary pulverizer shell is provided with a baffle plate to block coal from splashing out. The centrifuge cylinder is a conical cylinder with a small top and a large bottom, and the base of the centrifuge cylinder is fixedly arranged on the frame. The height of the rotating sleeve is lower than the height of the lowest surface of the crushing cylinder. A negative pressure pump is connected to the dust removal cover. The centrifugal shaft is driven by a direct-drive motor, and the direct-drive motor is arranged in the base of the centrifugal cylinder.

In the present invention, the size of the coal block during primary crushing can be adjusted according to the needs through the regulating plate, and an eccentric fly hammer is set to impact at the same time. The coal sieve falls to prevent the phenomenon of jamming, and when secondary crushing, the centrifugal cylinder can quickly throw the coal out, and throw the coal to the crushing blade on the crushing cylinder, so as to realize further crushing of the coal and effectively improve the crushing efficiency. efficiency, while the rotating sleeve provided at the drop opening of the secondary coal sieve can effectively prevent the coal block from clogging the drop opening of the secondary coal sieve, greatly improving the crushing efficiency. , Improve the working environment.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. a kind of coal mining coal cinder reducing mechanism, it includes primary coal cinder shredder assemblies, primary conveyor belt, secondary coal cinder powder Broken component and secondary conveyer belt, it is characterised in that described primary coal cinder shredder assemblies lower section is provided with after primary comminution Primary conveyor belt in coal cinder automatic transportation to secondary coal cinder shredder assemblies, at the coal outlet of described secondary coal cinder shredder assemblies The secondary conveyer belt of the coal cinder entrucking being provided with after secondary is crushed, is additionally provided with above described secondary coal cinder shredder assemblies Dust excluding hood.

2. a kind of coal mining coal cinder reducing mechanism according to claim 1, it is characterised in that：The primary coal cinder powder Broken component include adjustable plate, hydraulic regulation bar, eccentric wheel, flyball, driving wheel, motor, impact base, impact shock block and Oscillation device, wherein, described adjustable plate is arranged on the two ends of described impact base, and between adjustable plate and impact base Hole constitutes the primary coal cinder after primary coal cinder is crushed and sieves mouth, and described impact base upper end is tapered opening, and described rushes Vibrating mass is hit for circular cone, described impact shock block is slidably disposed in described tapered opening up and down, and described Oscillation device is provided between the bottom wall of the tapered opening of impact shock block and described impact base, so that impact shock Block is slided up and down along tapered opening, and described adjustable plate falls the big of mouth with the primary coal cinder sieve between described impact base It is small to be controlled by described hydraulic regulation bar, eccentric wheel is provided with the frame of the surface of described impact shock block, it is described Eccentric wheel uses belt transmission by driving wheel, and flyball is fixedly installed on described eccentric wheel, and the outer surface of described flyball sets Multiple pulverizing cutter blades are equipped with, multiple crushing are provided with the described upper surface of impact shock block and the inner surface of adjustable plate Blade, described secondary coal cinder shredder assemblies include secondary grinder shell, concentrator bowl, crush rotating shaft, centrifugation rotating shaft and concentrator bowl Base, wherein, described concentrator bowl base is arranged on the center of described secondary grinder shell, is set on described concentrator bowl base Centrifugation rotating shaft is equipped with, concentrator bowl, described concentrator bowl and described secondary grinder shell are fixedly installed in the centrifugation rotating shaft Between be provided with it is multiple crush rotating shafts, be fixedly installed pulverization cylinder in described crushing rotating shaft, the outer peripheral face of described pulverization cylinder On be provided with multiple pulverizing cutter blades, the rotation direction of described pulverization cylinder is with the rotation direction of described concentrator bowl conversely, described Concentrator bowl outer circumference surface on be also equipped with multiple pulverizing cutter blades, the bottom of described secondary grinder shell is provided with secondary coal Block sieves mouth.

3. a kind of coal mining coal cinder reducing mechanism according to claim 2, it is characterised in that：Described secondary crushing The fall position of mouth of the secondary coal cinder sieve is provided with turning set on device shell, described turning set by a pair of engaged gears with Described crushing engagement in rotation transmission.

4. a kind of coal mining coal cinder reducing mechanism according to claim 2, it is characterised in that：The secondary grinder The upper end coal feed point of shell is arranged on described primary conveyor belt lower section, and is set on the upper end coal feed point of described secondary grinder shell It is equipped with the baffle plate for blocking coal cinder spluttering.

5. a kind of coal mining coal cinder reducing mechanism according to claim 2, it is characterised in that：Described concentrator bowl is Up-small and down-big conically shaped, described concentrator bowl base is fixedly installed in frame.

6. a kind of coal mining coal cinder reducing mechanism according to claim 2, it is characterised in that：The height of the turning set Height of the degree less than the lowest surfaces of described pulverization cylinder.

7. a kind of coal mining coal cinder reducing mechanism according to claim 1-6 any one, it is characterised in that：It is described Dust excluding hood on be connected with negative pressure pump.

8. a kind of coal mining coal cinder reducing mechanism according to claim 2, it is characterised in that：Described centrifugation rotating shaft It is driven using direct driving motor, described direct driving motor is arranged in concentrator bowl base.