CN116273358A

CN116273358A - Anti-blocking device for coal pulverizer

Info

Publication number: CN116273358A
Application number: CN202211517292.7A
Authority: CN
Inventors: 宋振海; 程立; 宋振涛; 宋柳新
Original assignee: Guizhou Changxinglong Machinery Equipment Co ltd
Current assignee: Guizhou Changxinglong Machinery Equipment Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-06-23

Abstract

The invention relates to the technical field of coal exploitation and discloses an anti-blocking device for a coal pulverizer, which comprises a mounting frame, an outer disc fixed with the mounting frame, and a rotating disc arranged in the outer disc, wherein a crushing gap is formed between the rotating disc and the outer disc; the bottom of the crushing gap is provided with a gap blanking mechanism, and the gap blanking mechanism comprises a bottom baffle plate movably arranged below the crushing gap and a driving mechanism for driving the bottom baffle plate; the bottom striker plate can move in a certain range under the driving of the driving mechanism, so that the coal after being crushed in the crushing gap falls into the collecting hopper below. The anti-blocking device for the coal pulverizer can completely pulverize coal, can drive each part to link through motor work, does not need to be provided with other power sources, has reasonable structural design, can complete feeding and discharging in a gap manner, avoids blocking, has high automation degree, and can effectively improve the working efficiency.

Description

Anti-blocking device for coal pulverizer

Technical Field

The invention relates to the technical field of coal exploitation, in particular to an anti-blocking device for a coal pulverizer.

Background

The coal pulverizer is simply called as a coal pulverizer, is one of common equipment in broken coal and broken coal gangue production lines, and can pulverize large coal into coal with reasonable size, and the coal pulverizer is improved on the basis of an old hammer crusher and is of a novel structure.

Such as Chinese patent publication No.: the invention provides a coal crushing and blocking preventing device, which comprises a base, wherein both ends of the top of the base are respectively provided with a fixed groove, the inside of the base at the bottom end of the fixed groove is provided with a sliding groove, the inside of the sliding groove is provided with a sliding rod, the sliding rod is respectively connected with a first rotating plate and a second rotating plate through a connecting rod, both sides of the bottom ends of the first rotating plate and the second rotating plate are respectively provided with a mounting groove; the motor drives the first rotating plate and the second rotating plate to drive the crushing box to shake, so that the coal is fully crushed in the crushing box is further increased.

The following problems exist in the prior art: when the coal pulverizer pulverizes the material, the condition that the coal was easily piled up in the feed bin appears blockking up influences the normal use of pulverizer to and when discharging, because the frictional force between the coal, make coal discharge rate slower, influence coal pulverizer utilization efficiency after smashing.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides an anti-blocking device for a coal pulverizer.

The invention is realized by adopting the following technical scheme: an anti-blocking device for a coal pulverizer comprises a mounting frame, an outer disc fixed with the mounting frame, and a rotating disc arranged in the outer disc, wherein a crushing gap is formed between the rotating disc and the outer disc; the bottom of the crushing gap is provided with a gap blanking mechanism, and the gap blanking mechanism comprises a bottom baffle plate movably arranged below the crushing gap and a driving mechanism for driving the bottom baffle plate; the bottom striker plate can move in a certain range under the driving of the driving mechanism, so that the coal after being crushed in the crushing gap falls into the collecting hopper below.

An anti-blocking crushing mechanism is arranged in the crushing gap; anti-blocking crushing mechanism can crush coal by continuous rotation to continuous rotation also can effectively place and stop up in the crushing clearance, and job stabilization is high-efficient.

The bottom of outer dish is fixed with the collecting hopper, and the bottom of collecting hopper has the unloading pipe, and the feed opening department of unloading pipe is provided with feed mechanism. The blanking mechanism can realize the effect of discharging crushed coal out of the collecting hopper.

The anti-blocking crushing mechanism comprises crushing convex blocks circumferentially distributed on the inner wall of the outer disc; crushing mechanisms circumferentially distributed on the outer wall of the rotary disk; the anti-blocking crushing mechanism further comprises a rotary driving unit for driving the rotary disk to rotate so as to crush coal in the crushing gap. When the rotary disk rotates, the crushing mechanism can repeatedly squeeze and crush coal to remove large-scale caking in the coal when crushing the lugs.

As a further improvement of the scheme, the crushing mechanism comprises a mounting groove formed in the rotating disc, a movable extrusion block rotationally connected to one end of the mounting groove, an inner side of the movable extrusion block and an inner wall of the mounting groove are connected through an elastic piece, the outer end of the movable extrusion block extends out of the mounting groove, the outer end of the movable extrusion block is connected with the mounting groove through a sealing gasket which is long enough to prevent coal from entering the mounting groove, and crushing teeth are arranged on contact surfaces of the movable extrusion block and the crushing convex blocks.

According to the scheme, when the movable extrusion block is driven by the elastic piece and is close to the crushing convex block, coal between the movable extrusion block and the crushing convex block is gradually extruded, so that the coal is crushed, when the movable extrusion block is not contacted with the crushing convex block any more, the tail end of the movable extrusion block can be contacted with the inner wall of the outer disc, so that coal attached to the inner wall of the movable extrusion block is scraped, one side of the movable extrusion block, which is contacted with the inner wall of the outer disc, is in a triangular shape, a roller is arranged, the roller is in a cylindrical structure with a plurality of ribs distributed on the outer wall, and the ribs can be contacted with the inner wall of the outer disc, so that the coal attached to the inner wall of the outer disc is effectively scraped.

As a further improvement of the scheme, at least one cavity is further formed in the rotary disc, one side of the cavity is provided with an opening and the opening is formed in the side face of the rotary disc, an extrusion crushing mechanism is arranged in the cavity and comprises a crushing plate movably arranged in the cavity and a power unit for driving the crushing plate to reciprocate, and the periphery of the crushing plate is always attached to the inner wall of the cavity so as to prevent coal from entering the cavity.

As a further improvement of the above, the power unit includes an electric putter mounted in the cavity, and the telescopic end of the electric putter is connected with the pulverizing plate. The electric push rod can be arranged to stretch back and forth, and can be close to the inner wall of the outer disc when stretching out, and can not contact with the crushing convex blocks, so that coal in the crushing gap can be extruded, and the effect of crushing coal is finally achieved.

As a further improvement of the scheme, the rotary driving unit comprises a motor fixed at the bottom of the mounting frame and a motor rotating shaft connected with the motor, a central shaft arranged vertically is arranged at the other end of the motor rotating shaft, the central shaft and the rotary disc are coaxially fixed, and the part of the central shaft, which is positioned in the collecting hopper, is provided with a crushing cutter.

As a further improvement of the scheme, the power unit comprises a baffle plate movably arranged in the cavity and a fixed pipe arranged on the inner side of the baffle plate, one side of the baffle plate is connected with the crushing plate through a push rod, one end of the fixed pipe is connected with the baffle plate through a telescopic pipe, the other end of the fixed pipe is connected with a connecting pipe, and the other end of the connecting pipe is provided with an air source for driving the air pressure in the telescopic pipe to change so as to change the length of the telescopic pipe, thereby pushing the baffle plate to slide.

As a further improvement of the scheme, the air source comprises a pressurizing box eccentrically fixed on the top surface of the rotating disc, a piston plate is movably arranged in the pressurizing box, a variable-volume air cavity is formed between the piston plate and the inner wall of the pressurizing box, an air outlet connected with a connecting pipe is formed in the outer side of the pressurizing box, an installation shaft coaxially arranged with the rotating disc is arranged at the top of the installation frame, a cam is installed at the bottom end of the installation shaft, one side of the piston plate fixedly slides to penetrate through a movable ejector rod of the pressurizing box shell, and the outer end of the movable ejector rod can be abutted against the outer ring surface of the cam. And the mounting frame is also provided with an adjusting motor, and the output end of the adjusting motor is connected with the mounting shaft so as to conveniently adjust the position of the mounting shaft.

When the scheme is in operation, the rotary disk drives the pressurizing box to move while rotating, the piston plate on the pressurizing box moves along with the rotary disk, the ejector rod also rotates along with the rotary disk, and the ejector rod rotates to be in continuous contact with the side surface of the cam on the mounting shaft, so that the piston plate is driven to move in the pressurizing box, the air pressure in the pressurizing box is continuously changed, gas is enabled to enter the telescopic pipe in a reciprocating mode, and the length change of the telescopic pipe drives the partition plate to slide, so that the crushing plate is driven to extend in a reciprocating mode.

As a further improvement of the scheme, the blanking mechanism comprises a lifting unit for driving the material blocking table to lift and a scraping unit for transferring coal, the cross section of the interior of the blanking pipe is rectangular, the longitudinal section of the material blocking table is isosceles trapezoid, the vertical planes on the two sides of the material blocking table are attached to the inner wall of the blanking pipe, and the inclined planes on the two sides of the material blocking table can be attached to or separated from the inner wall of the blanking pipe; the bottom of keeping off the material platform is installed the deflector of rectangle frame form, and the deflector can avoid coal to fall into the clearance between keeping off material platform and the bottom plate to can guide coal to descend, guide simultaneously keeps off the longitudinal sliding of material platform, deflector and the longitudinal sliding connection of bottom plate.

According to the scheme, when the material blocking table is lowered to a certain height in operation, coal in the blanking pipe can fall down, and when all sides of the material blocking table are lifted to be attached to the surface of the blanking pipe, the blanking pipe can be blocked naturally.

The lifting unit comprises a bottom plate fixed at the bottom of the mounting frame, a crank arranged between the central shaft and the motor rotating shaft and a rocker arm rotationally connected to the crank, the other end of the rocker arm is rotationally connected with a sliding seat, a rotary supporting rod is rotationally arranged on the sliding seat, and the other end of the rotary supporting rod is connected with the material blocking table;

according to the technical scheme, when the rotary support rod works, the central shaft rotates to drive the crank to rotate, so that the rocker is driven to pull the sliding seat to slide in a reciprocating manner, and the rotary support rod drives the material blocking table to lift in a reciprocating manner.

The scraping unit comprises a first cylinder, a second cylinder, a transverse plate and a scraping plate, wherein the first cylinder is vertically arranged, the second cylinder is horizontally arranged, the first cylinder is fixed in the mounting frame and is vertically and slidably connected with the mounting frame, the output end of the second cylinder is connected with the output end of the first cylinder, the transverse plate is further arranged at the output end of the first cylinder, the tail end of the transverse plate is close to the bottom plate, the scraping plate is easily fixed on the tail end of the transverse plate, and the shell of the second cylinder is connected with the transverse plate.

When the coal on the bottom plate is accumulated to a certain extent, the second air cylinder works to drive the transverse plate and the scraping plate to horizontally move, so that after the scraping plate moves to a certain position, the first air cylinder works to drive the scraping plate and the transverse plate to descend until the bottom end of the scraping plate contacts with the bottom plate, and then the second air cylinder continues to work to drive the scraping plate to horizontally move, so that the coal on the bottom plate is scraped.

As the further improvement of above-mentioned scheme, the connection lug is installed in the outside of bottom striker plate, connection lug and outer dish rotate to be connected, actuating mechanism is including fixing the driving gear in the center pin outside, rotate the driven gear of connecting in the rotary disk bottom surface, driven gear is equipped with two, and two driven gears symmetry locate the both sides of driving gear, and driving gear and driven gear are lack the tooth gear, all are fixed with the ejector pin on every driven gear, the end of ejector pin is used for contradicting with the inboard of bottom striker plate, and the ejector pin on each driven gear is different simultaneously with bottom striker plate contact.

Above-mentioned scheme is at the during operation, along with the center pin rotation, drives the driving gear and rotates, and the driving gear rotates to when meshing with one of them driven gear, can drive it and rotate along with following, and until the two separation, the ejector pin on the driven gear rotates round driven gear's central line to constantly promote bottom striker plate to one side motion, thereby open broken clearance's one side bottom, make things convenient for coal unloading, the same reason, when driving gear and another driven gear meshing, then can promote bottom striker plate to the activity of opposite side, reach the effect of unloading equally.

As the further improvement of above-mentioned scheme, the activity laminating of bottom striker plate is in the bottom surface of rotary disk and outer dish, and the below of bottom striker plate is provided with supporting mechanism, and actuating mechanism includes driving gear and circumference distribution at driving gear four at least driven gears all around, and driving gear and driven gear are the tooth-missing gear, all are fixed with the ejector pin on the driven gear, and the end of ejector pin is used for contradicting with the inboard of bottom striker plate, and the ejector pin on each driven gear is not simultaneously with bottom striker plate contact.

Above-mentioned scheme is at the during operation, the driving gear can be continuous with each driven gear meshing to drive the corresponding promotion bottom striker plate of ejector pin on the driven gear to the motion of different directions, thereby open the bottom in broken clearance from each position, make coal unloading from different places, and in the aforesaid scheme, all install the torsional spring on driven gear's the gear shaft, so that when it does not mesh with the driving gear automatic re-setting, make things convenient for its continuous operation.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides an anti-blocking device for a coal pulverizer, wherein an anti-blocking pulverizing mechanism comprises pulverizing convex blocks circumferentially distributed on the inner wall of an outer disc; crushing mechanisms circumferentially distributed on the outer wall of the rotary disk; the anti-blocking crushing mechanism further comprises a rotary driving unit for driving the rotary disk to rotate so as to crush coal in the crushing gap. When the rotary disk rotates, the crushing mechanism can repeatedly squeeze and crush coal to remove large-scale caking in the coal when crushing the lugs.

The anti-blocking device for the coal pulverizer can completely pulverize coal, can drive each part to link through motor work, does not need to be provided with other power sources, has reasonable structural design, can complete feeding and discharging in a gap manner, avoids blocking, has high automation degree, and can effectively improve the working efficiency.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an anti-blocking device for a coal pulverizer according to embodiment 1 of the present invention;

FIG. 2 is a schematic cross-sectional structure of an outer disk and a rotating disk of the anti-clogging device for the coal pulverizer;

fig. 3 is a schematic structural view of a movable bottom plate and a driving mechanism of an anti-blocking device for a coal pulverizer according to embodiment 2 of the present invention;

fig. 4 is a schematic structural view of a movable bottom plate and a driving mechanism of an anti-blocking device for a coal pulverizer according to embodiment 1 of the present invention;

fig. 5 is a schematic view of an anti-clogging device mounting frame for a coal pulverizer and an internal structure thereof according to embodiment 1 of the present invention;

fig. 6 is a schematic cross-sectional structure of an outer disk and a rotating disk in an anti-clogging device for a coal pulverizer in embodiment 2 of the present invention;

FIG. 7 is a schematic cross-sectional view of the blanking tube and the baffle according to the present invention;

FIG. 8 is an enlarged view of FIG. 1A in accordance with the present invention;

FIG. 9 is an enlarged view of the invention at B in FIG. 1;

FIG. 10 is an enlarged view of FIG. 6 at C in accordance with the present invention;

fig. 11 is a schematic structural view of a cam in an anti-blocking device for a coal pulverizer.

Main symbol description:

in the figure: the device comprises a mounting frame 1, a mounting shaft 2, a cam 3, a pressurizing box 4, a piston plate 5, an outer disc 6, a crushing lug 7, a collecting hopper 8, a first cylinder 9, a second cylinder 10, a transverse plate 11, a scraping plate 12, a supporting leg 13, a motor 14, a guide plate 15, a bottom plate 16, a material blocking table 17, a central shaft 18, a discharging pipe 19, a crushing cutter 20, a driving gear 21, a rotating disc 22, a crushing cavity 23, a bottom material blocking plate 25, a rolling element 26, a supporting frame 27, a crank 28, a rocker arm 29, a motor rotating shaft 30, a sliding seat 31, a rotating supporting rod 32, a sealing pad 33, a mounting groove 34, an elastic element 35, a cavity 36, a crushing plate 37, an electric push rod 38, a roller 39, a push rod 40, a movable extrusion block 41, a driven gear 42, a connecting lug 43, a fixed pipe 44, a connecting pipe 45, a telescopic pipe 46 and a push rod 47.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

Example 1:

referring to fig. 1-11, the present invention is implemented by adopting the following technical schemes: an anti-blocking device for a coal pulverizer comprises a mounting frame 1, an outer disc 6 fixedly connected with the mounting frame 1, and a rotary disc 22 arranged in the outer disc 6, wherein a crushing gap is formed between the rotary disc 22 and the outer disc 1; the bottom of the crushing gap is provided with a gap blanking mechanism, and the gap blanking mechanism comprises a bottom baffle plate 25 movably arranged below the crushing gap and a driving mechanism for driving the bottom baffle plate 25; the bottom baffle 25 can move within a certain range under the driving of the driving mechanism, so that the coal after being crushed in the crushing gap falls into the collecting hopper 8 below.

Referring to fig. 1, a collecting hopper 8 is fixed at the bottom of the outer tray 6, a blanking pipe 19 is arranged at the bottom of the collecting hopper 8, and a blanking mechanism is arranged at a blanking opening of the blanking pipe 19. The blanking mechanism can realize the effect of discharging crushed coal out of the collecting hopper.

Referring to fig. 1, the anti-blocking crushing mechanism includes crushing lugs 7 circumferentially distributed on the inner wall of the outer disc 6; crushing mechanisms circumferentially distributed on the outer wall of the rotary disk 22; the anti-blocking crushing mechanism also includes a rotary drive unit to drive the rotary disk 22 to rotate to crush the coal in the crushing gap. When the rotary disk 22 rotates, the crushing mechanism can repeatedly crush and crush coal to remove large-scale caking in the coal when passing through the crushing lug 7.

Referring to fig. 2 and 6, as an alternative embodiment of the present invention, the crushing mechanism includes a mounting groove 34 formed in the rotary disc 22, a movable extrusion block 41 rotatably connected to one end of the mounting groove 34, the inner side of the movable extrusion block 41 and the inner wall of the mounting groove 34 are connected by an elastic member 35, the outer end of the movable extrusion block 41 extends out of the mounting groove 34, the outer end of the movable extrusion block 41 is connected to the mounting groove 34 by a sealing pad 33 long enough to prevent coal from entering into the mounting groove 34, and the contact surfaces of the movable extrusion block 41 and the crushing protrusions 7 are provided with crushing teeth.

Referring to fig. 2 again, in the above-mentioned scheme, when the above-mentioned scheme is in operation, the movable extrusion piece 41 is under the drive of elastic component 35, when it is close to with crushing lug 7, can extrude the coal between the two gradually to smash the coal, and when movable extrusion piece 41 no longer contacts with crushing lug 7, its terminal can contact with the inner wall of outer dish 6, thereby strike off the coal that its inner wall adheres to, the side that movable extrusion piece 41 contacted with the outer dish inner wall is triangle-shaped, and install roller 39, the ball 39 is the cylindric structure of outer wall distribution a plurality of fins, the fin can contact with the outer dish inner wall, thereby effectively strike off the coal that outer dish 6 inner wall adheres to.

As an alternative embodiment of the present invention, referring to fig. 2 and 6 in particular, at least one cavity 36 is further provided in the rotating disc 22, one side of the cavity 36 is opened and the opening is provided at the side of the rotating disc 22, an extrusion crushing mechanism is installed in the cavity 36, the extrusion crushing mechanism includes a crushing plate 37 movably provided in the cavity and a power unit for driving the crushing plate 37 to reciprocate, and the periphery of the crushing plate 37 is always attached to the inner wall of the cavity 36, so as to prevent coal from entering the cavity 36.

As an alternative embodiment of the present invention, in fig. 2, the power unit includes an electric push rod 38 installed in a cavity 36, and a telescopic end of the electric push rod 38 is connected to a pulverizing plate 37. The electric push rod 38 can be arranged to extend and retract reciprocally, and can approach the inner wall of the outer disc 6 when extending, and can not contact with the crushing convex blocks 7, so that coal in the crushing gap can be extruded, and the effect of crushing the coal is finally achieved.

The rotary driving unit comprises a motor 14 fixed at the bottom of the mounting frame 1 and a motor rotating shaft 30 connected with the motor 14, a central shaft 18 arranged vertically is arranged at the other end of the motor rotating shaft 30, the central shaft 18 and the rotary disc 22 are coaxially fixed, and a crushing cutter 20 is arranged at the part of the central shaft 18 located in the collecting hopper. The crushing cutter can be used for further crushing coal falling into the collecting hopper.

Example 2

Unlike embodiment 1, referring specifically to fig. 6, the power unit includes a partition movably disposed in the cavity 36, a fixing tube 44 installed inside the partition, one side of the partition is connected to the pulverizing plate 37 through a push rod 47, one end of the fixing tube 44 is connected to the partition through a telescopic tube 46, the other end of the fixing tube 46 is connected to a connecting tube 45, and an air source for driving the air pressure in the telescopic tube 46 to vary so as to vary its length is installed at the other end of the connecting tube 45, thereby driving the partition to slide.

As an alternative embodiment of the present invention, referring specifically to fig. 1, the air source includes a pressurizing box 4 eccentrically fixed on the top surface of a rotating disc 22, a piston plate 5 movably disposed in the pressurizing box, a variable volume air cavity formed between the piston plate 5 and the inner wall of the pressurizing box 4, an air outlet connected with a connecting pipe 45 disposed on the outer side of the pressurizing box 4, a mounting shaft 2 coaxially disposed with the rotating disc 22 disposed on the top of the mounting frame 1, a cam 3 mounted on the bottom end of the mounting shaft 2, and a movable ejector rod fixedly sliding through the casing of the pressurizing box 4 on one side of the piston plate 5, wherein the outer end of the movable ejector rod can abut against the outer annular surface of the cam 3. And still be equipped with accommodate motor on the mounting bracket 1, accommodate motor's output and installation axle 2 are connected to the position of convenient regulation installation axle 2. Referring specifically to fig. 11, it can be seen that the outer ring surface of the cam 3 is a wavy curved surface, so as to drive the ejector rod to stretch out and draw back.

When the scheme is in operation, the rotary disc 22 rotates and drives the pressurizing box 4 to move, the piston plate 5 on the pressurizing box 5 moves along with the pressurizing box, the ejector rod also rotates, and the ejector rod rotates to be in continuous contact with the side face of the cam 3 on the mounting shaft 2, so that the piston plate 5 is driven to move in the pressurizing box 4, the air pressure in the pressurizing box 4 is continuously changed, so that air enters the telescopic tube 46 in a reciprocating manner, the length change of the telescopic tube 46 drives the partition plate to slide, and the crushing plate 37 is driven to extend in a reciprocating manner.

As an alternative embodiment of the present invention, the discharging mechanism includes a lifting unit for driving the material blocking table 17 to lift and a scraping unit for transferring coal, the inner cross section of the discharging pipe 19 is rectangular, the longitudinal section of the material blocking table 17 is isosceles trapezoid, the vertical planes at two sides of the material blocking table 17 are attached to the inner wall of the discharging pipe 19, and the inclined planes at two sides of the material blocking table 17 can be attached to or separated from the inner wall of the discharging pipe 19; the bottom of the material blocking table is provided with the rectangular frame-shaped guide plate 15, the guide plate 15 can prevent coal from falling into a gap between the material blocking table 17 and the bottom plate 16, and can guide the coal to descend, and meanwhile, the material blocking table 17 is guided to longitudinally slide, and the guide plate 15 is longitudinally slidably connected with the bottom plate 16.

According to the scheme, when the material blocking table 17 descends to a certain height during working, coal in the blanking pipe 19 can fall down, and when all sides of the material blocking table 17 ascend to be attached to the surface of the blanking pipe 19, the blanking pipe 19 can be blocked naturally.

The lifting unit comprises a bottom plate 16 fixed at the bottom of the mounting frame 1, a crank 28 arranged between the central shaft 18 and a motor rotating shaft 30, and a rocker arm rotatably connected to the crank 28, wherein the other end of the rocker arm 28 is rotatably connected with a sliding seat 31, a rotary supporting rod 32 is rotatably arranged on the sliding seat 31, and the other end of the rotary supporting rod 32 is connected with the material blocking table 17;

in operation, the central shaft 18 rotates to drive the crank 28 to rotate, so as to drive the rocker 28 to pull the sliding seat 31 to slide reciprocally, and the rotary support rod 32 drives the material blocking table 17 to lift reciprocally.

The scraping unit comprises a first cylinder 9, a second cylinder 10, a transverse plate 11 and a scraping plate 12, wherein the first cylinder 9 is vertically arranged, the second cylinder 10 is horizontally arranged, the first cylinder 9 is fixed in the mounting frame 1, the second cylinder 10 is vertically and slidably connected with the mounting frame, the output end of the second cylinder 10 is connected with the output end of the first cylinder 9, the transverse plate 11 is further arranged at the output end of the first cylinder 9, the tail end of the transverse plate 11 is close to the bottom plate 16, the scraping plate 12 is easily fixed, and the shell of the second cylinder 10 is connected with the transverse plate 11.

When the scraping unit works, when coal on the bottom plate 16 is accumulated to a certain extent, the second cylinder 10 works to drive the transverse plate 11 and the scraping plate 12 to horizontally move, so that after the scraping plate 12 moves to a certain position, the first cylinder 9 works to drive the scraping plate and the transverse plate 11 to descend until the bottom end of the scraping plate 12 contacts with the bottom plate 16, and then the second cylinder 10 continues to work to drive the scraping plate 12 to horizontally move, so that the coal on the bottom plate 16 is scraped away.

As an alternative embodiment of the present invention, the outer side of the bottom baffle 25 is provided with a connection lug 43, the connection lug 43 is rotatably connected with the outer disk 6, the driving mechanism includes a driving gear 21 fixed on the outer side of the central shaft 18, and driven gears 42 rotatably connected to the bottom surface of the rotating disk 22, two driven gears 42 are provided, and the two driven gears 42 are symmetrically arranged on two sides of the driving gear 21, and the driving gear 21 and the driven gears 42 are all tooth-missing gears, and each driven gear 42 is fixed with a push rod 40, the end of the push rod 40 is used for abutting against the inner side of the bottom baffle 25, and the push rod 40 on each driven gear 42 is not simultaneously contacted with the bottom baffle 25.

According to the scheme, when the coal feeding device works, the driving gear 21 is driven to rotate along with the rotation of the central shaft 18, the driving gear 21 can be driven to rotate when being meshed with one of the driven gears 42 until the driving gear 21 is separated from the driven gears, and the ejector rod 40 on the driven gear 42 rotates around the central line of the driven gears, so that the bottom baffle 45 is continuously pushed to move to one side, one side bottom of a crushing gap is opened, coal feeding is facilitated, the same reason is that when the driving gear is meshed with the other driven gear, the bottom baffle 45 is pushed to move to the other side, and the effect of feeding is achieved.

Example 3:

this scheme is different from embodiment 2, bottom striker plate 25 activity laminating is in the bottom surface of rotary disk 22 and outer dish 6, the below of bottom striker plate 25 is provided with supporting mechanism, actuating mechanism includes driving gear 21 and circumference distribution at driving gear 21 four at least driven gears 42 all around, driving gear 21 and driven gear 42 are the tooth-missing gear, all be fixed with ejector pin 40 on the driven gear 42, the end of ejector pin 40 is used for contradicting with the inboard of bottom striker plate 25, and ejector pin 40 on each driven gear 42 is not simultaneously with bottom striker plate 25 contact. And the supporting mechanism comprises rolling elements 26 and a supporting frame 27, wherein the supporting frame 27 is fixed on the inner wall of the collecting hopper, a plurality of rolling elements 26 are arranged at the top end of the supporting frame 27, the rolling elements 26 are in contact with the bottom surface of the bottom baffle plate 25, so that the bottom baffle plate 25 is limited to be always between the rolling elements 26 and the rotating disc and the outer disc, and the rolling elements 26 can be stainless steel spheres.

Above-mentioned scheme is at the during operation, the driving gear 21 can be continuous with each driven gear 42 meshing to drive the corresponding promotion bottom striker plate 25 of ejector pin on the driven gear 42 to the motion of different directions, thereby open the bottom in broken clearance from each position, make coal unloading from different places, and in the above-mentioned scheme, all install the torsional spring on the gear shaft of driven gear 42, so that when it does not mesh with the driving gear, automatic re-setting makes things convenient for its continuous operation.

The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.

Claims

1. The anti-blocking device for the coal pulverizer is characterized by comprising a mounting frame, an outer disc fixed with the mounting frame, and a rotating disc arranged in the outer disc, wherein a crushing gap is formed between the rotating disc and the outer disc; the bottom of the crushing gap is provided with a gap blanking mechanism, and the gap blanking mechanism comprises a bottom baffle plate movably arranged below the crushing gap and a driving mechanism for driving the bottom baffle plate;

an anti-blocking crushing mechanism is arranged in the crushing gap;

the bottom of outer dish is fixed with the collecting hopper, and the bottom of collecting hopper has the unloading pipe, and the feed opening department of unloading pipe is provided with feed mechanism.

The anti-blocking crushing mechanism comprises crushing convex blocks circumferentially distributed on the inner wall of the outer disc; crushing mechanisms circumferentially distributed on the outer wall of the rotary disk; the anti-blocking crushing mechanism further comprises a rotary driving unit for driving the rotary disk to rotate so as to crush coal in the crushing gap.

2. The anti-clogging device for a coal pulverizer as recited in claim 1, wherein the crushing mechanism includes a mounting groove provided in the rotary disk, a movable extrusion block rotatably connected to one end of the mounting groove, an inner side of the movable extrusion block and an inner wall of the mounting groove are connected by an elastic member, an outer end of the movable extrusion block extends out of the mounting groove, the outer end of the movable extrusion block is connected with the mounting groove by a sealing pad long enough to prevent coal from entering the mounting groove, and crushing teeth are provided on contact surfaces of the movable extrusion block and the crushing projections.

3. The anti-clogging device for a coal pulverizer as recited in claim 2, wherein at least one cavity is further provided in the rotary disk, one side of the cavity is opened and the opening is provided on the side of the rotary disk, an extrusion pulverizing mechanism is installed in the cavity, the extrusion pulverizing mechanism comprises a pulverizing plate movably provided in the cavity and a power unit driving the pulverizing plate to reciprocate, and the periphery of the pulverizing plate is always attached to the inner wall of the cavity to prevent coal from entering the cavity.

4. A coal pulverizer anti-clogging device as recited in claim 3, wherein the power unit includes an electric pushrod mounted in the cavity, and the telescoping end of the electric pushrod is connected to the pulverizing plate.

5. The anti-clogging device for a coal pulverizer as recited in claim 1, wherein the rotary driving unit includes a motor fixed to a bottom of the mounting frame, a motor shaft connected to the motor, a vertically disposed central shaft installed at the other end of the motor shaft, the central shaft and the rotary disk being coaxially fixed, and a pulverizing cutter being installed at a portion of the central shaft located in the collecting hopper.

6. A coal pulverizer anti-clogging device as claimed in claim 3, wherein the power unit comprises a partition plate movably disposed in the cavity, a fixed tube mounted on the inner side of the partition plate, one side of the partition plate is connected with the pulverizing plate through a push rod, one end of the fixed tube is connected with the partition plate through a telescopic tube, the other end of the fixed tube is connected with a connecting tube, and the other end of the connecting tube is provided with a gas source for driving the gas pressure in the telescopic tube to change so as to change the length thereof, thereby driving the partition plate to slide.

7. The anti-blocking device for the coal pulverizer as claimed in claim 6, wherein the air source comprises a pressurizing box eccentrically fixed on the top surface of the rotating disc, a piston plate is movably arranged in the pressurizing box, an air cavity with variable volume is formed between the piston plate and the inner wall of the pressurizing box, an air outlet connected with the connecting pipe is formed in the outer side of the pressurizing box, an installation shaft coaxially arranged with the rotating disc is arranged at the top of the installation frame, a cam is arranged at the bottom end of the installation shaft, one side of the piston plate fixedly slides to penetrate through a movable ejector rod of the pressurizing box shell, and the outer end of the movable ejector rod can be abutted against the outer ring surface of the cam. And the mounting frame is also provided with an adjusting motor, and the output end of the adjusting motor is connected with the mounting shaft so as to conveniently adjust the position of the mounting shaft.

8. The anti-blocking device for the coal pulverizer as claimed in claim 1, wherein the discharging mechanism comprises a lifting unit for driving the material blocking table to lift and a scraping unit for transferring coal, the cross section of the interior of the discharging pipe is rectangular, the longitudinal section of the material blocking table is isosceles trapezoid, the vertical planes at two sides of the material blocking table are attached to the inner wall of the discharging pipe, and the inclined planes at two sides of the material blocking table can be attached to or separated from the inner wall of the discharging pipe;

the lifting unit comprises a bottom plate fixed at the bottom of the mounting frame, a crank arranged between the central shaft and the motor rotating shaft and a rocker arm rotatably connected to the crank, the other end of the rocker arm is rotatably connected with a sliding seat, a rotary supporting rod is rotatably arranged on the sliding seat, and the other end of the rotary supporting rod is connected with the material blocking table;

9. The anti-blocking device for a coal pulverizer as claimed in claim 8, wherein the outer side of the bottom baffle is provided with a connecting lug, the connecting lug is rotationally connected with the outer disk, the driving mechanism comprises a driving gear fixed on the outer side of the central shaft and driven gears rotationally connected to the bottom surface of the rotating disk, the driven gears are two, the two driven gears are symmetrically arranged on two sides of the driving gear, the driving gear and the driven gears are tooth-missing gears, each driven gear is fixedly provided with a push rod, the tail end of the push rod is used for abutting against the inner side of the bottom baffle, and the push rods on the driven gears are not contacted with the bottom baffle at the same time.

10. The anti-blocking device for the coal pulverizer of claim 8, wherein the bottom baffle is movably attached to the bottom surfaces of the rotating disc and the outer disc, a supporting mechanism is arranged below the bottom baffle, the driving mechanism comprises a driving gear and at least four driven gears circumferentially distributed around the driving gear, the driving gear and the driven gears are all tooth-missing gears, ejector rods are fixed on the driven gears, the tail ends of the ejector rods are used for abutting against the inner sides of the bottom baffle, and the ejector rods on the driven gears are not contacted with the bottom baffle at the same time.