CN114345484B

CN114345484B - Raw material crushing device of denitration catalyst and operation method thereof

Info

Publication number: CN114345484B
Application number: CN202210060210.4A
Authority: CN
Inventors: 谭佳沅
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2023-07-14
Anticipated expiration: 2042-01-19
Also published as: CN114345484A

Abstract

The invention discloses a raw material crushing device of a denitration catalyst and an operation method thereof, wherein the raw material crushing device comprises a storage bin, a feed inlet, an inclined plate and a transverse plate are arranged on the storage bin, the inclined plate and the transverse plate are respectively provided with an upper opening and a lower opening, and the inclined plate is connected with the transverse plate through a vertical plate; the sloping plate is rotationally connected with an upper blade through a rotary shaft, the transverse plate is rotationally connected with a lower blade through a main shaft, a motor is arranged in the storage bin, and the main shaft and the rotary shaft are driven through a gear assembly; the material bin is rotationally connected with a rocking plate, the rocking plate is provided with a fine grid and a coarse grid, and a finished product box and a transition box are respectively arranged below the fine grid and the coarse grid; the lower end of the main shaft is provided with a first gear, the feed bin is rotationally connected with a second gear which is used for meshed transmission with the first gear, a vibration component is arranged between the second gear and the rocking plate, and an anti-blocking component is arranged between the first gear and the rocking plate. Provided are a raw material crushing device for a denitration catalyst, which has higher crushing efficiency and higher screening efficiency after crushing raw materials, and an operation method thereof.

Description

Raw material crushing device of denitration catalyst and operation method thereof

Technical Field

The invention relates to the field of denitration catalysts, in particular to a raw material crushing device for a honeycomb denitration catalyst in a production process and an operation method thereof.

Background

The denitration catalyst is mainly applied to an SCR denitration system of a power plant, and promotes a reducing agent to selectively react with nitrogen oxides in flue gas at a certain temperature in the SCR reaction process, so that the denitration catalyst is an important way for preventing environmental pollution. Currently, the denitration catalyst can be classified into three types: plate, honeycomb and corrugated plate, wherein the plate and honeycomb are more, and the denitration catalyst is mainly produced by extrusion molding. In order to ensure the extrusion performance of the denitration catalyst, the raw materials are required to be fully crushed, so that the pugs doped with auxiliary materials can be uniformly mixed, and the problem of die blockage during pug extrusion is avoided; however, the device for crushing raw materials in the prior art has the phenomenon of uneven crushing effect, such as a raw material crushing device for denitration catalyst published by the national intellectual property agency, bulletin number: CN 208373242U, cutting raw materials in the pulverizing barrel by a blade, blowing the pulverized raw materials into a pulverizing raw material temporary storage cavity at the bottom of the pulverizing barrel by wind power generated when the blade rotates, and outputting the pulverized raw materials to the pulverizing barrel by a fan; in order to screen the size of the chopped raw material particles, a screen is additionally arranged at the positions of the crushing barrel and the fan, so that the raw materials with larger particles are prevented from passing through. The screen is easy to be blocked by the device for crushing raw materials, so that the discharge efficiency of the crushed raw materials is reduced; because the crushing barrel is cylindrical, the crushed raw materials can be accumulated in the circular arc area at the bottom, and if the cutting speed of the blade is increased, the accumulation and blockage of the raw materials at the bottom are easily caused, so that the efficiency of cutting the raw materials is limited. In general, the prior art raw material crushing device has the disadvantages of low crushing efficiency and low screening efficiency after crushing raw materials. In addition, the used denitration catalyst is often directly discarded, namely, the waste denitration catalyst is extremely easy to cause resource waste and environmental pollution.

Disclosure of Invention

The invention aims to solve the technical problems and overcome the defects of the prior art, and provides a raw material crushing device of a denitration catalyst and an operation method thereof, wherein the raw material crushing device has higher crushing efficiency, higher screening efficiency after raw material crushing and capability of improving the utilization rate of a waste catalyst.

The technical scheme of the invention is that a raw material crushing device of a denitration catalyst with the following structure is provided: the automatic feeding device comprises a feed bin, wherein a feed inlet is formed in the upper part of the feed bin, an inclined plate and a transverse plate are arranged in the feed bin at intervals, the inclined plate is positioned above the transverse plate, the inclined plate is obliquely arranged in the feed bin, an upper opening is formed in one side, far away from the feed inlet, of the inclined plate, a lower opening is formed in the position, below the upper opening, of the transverse plate, and the inclined plate is connected with the transverse plate through a vertical plate; the inclined plate is rotationally connected with an upper blade through a rotary shaft, and the plane where the upper blade rotates is parallel to the inclined plate; the transverse plate is connected with a lower blade through the rotation of the main shaft, a motor for driving the main shaft to rotate is arranged in the storage bin, and the main shaft and the rotary shaft are driven through a gear assembly; the bin is rotationally connected with a rocking plate below the transverse plate through a hinge point, the hinge point is positioned below the lower opening, the rocking plate is provided with a thin grating in an area below the lower opening, the rocking plate is provided with a thick grating in an area far away from the lower opening, and the width of an upper open slot of the thin grating is smaller than that of an upper open slot of the thick grating; the bin is provided with a finished product box and a transition box below the fine grille and the coarse grille respectively; a vibration component for driving the rocking plate to swing in the storage bin is arranged between the second gear and the rocking plate, and an anti-blocking component for cleaning the fine grid is arranged between the first gear and the rocking plate.

Preferably, the transverse plate is horizontally arranged in the storage bin, and the included angle between the inclined plate and the transverse plate is 15 degrees.

Preferably, the upper blade free end extends to an upper open area and the lower blade free end extends to a lower open area.

As an improvement of the invention, the vibration component is characterized in that a first magnet is embedded on the second gear, and the distance from the first magnet to the axis of the second gear is larger than zero; the rocking plate is embedded with a second magnet right below the first magnet, the first magnet and the second magnet repel each other, and the second magnet is arranged at the end part of the rocking plate far away from the hinging point; a cylindrical pin used for being abutted against or separated from the rocking plate is arranged above the rocking plate in the feed bin, and a tension spring used for pulling the rocking plate to be abutted against the cylindrical pin is arranged between the feed bin and the rocking plate; when the second magnet is positioned right below the first magnet, the repulsive force between the first magnet and the second magnet is larger than the pulling force of the tension spring on the rocking plate; in the vertical direction, the cylindrical pin position is lower than the hinge point position.

As an improvement of the invention, the anti-blocking component is characterized in that a first opening is formed in the middle position of the coarse grille and the fine grille of the rocking plate, a supporting block is fixedly connected with the first opening, the supporting block is connected with a sliding block in a sliding way through a dovetail groove, the sliding block is connected with a frame below the fine grille, and a top strip for being inserted into the opening of the fine grille is arranged on the frame; a third magnet and a fourth magnet are embedded on the first gear, the distance between the third magnet and the fourth magnet and the axis of the first gear is greater than zero, and the distance between the third magnet and the fourth magnet and the axis of the first gear are equal; the sliding block is embedded with a fifth magnet, the fifth magnet and the third magnet are attracted mutually, and the fifth magnet and the fourth magnet are mutually repelled.

As an improvement of the invention, the movement direction of the sliding block is vertical to the rocking plate, and the frame is arranged in parallel with the rocking plate.

As an improvement of the invention, the bin is provided with an upper stop block above the rocking plate and used for abutting against or separating from the upper end part of the sliding block, and a lower stop block below the rocking plate and used for abutting against or separating from the lower end part of the sliding block.

By adopting the structure, compared with the prior art, the raw material crushing device of the denitration catalyst provided by the invention has the advantages that raw materials are poured into the bin from the feed inlet, the raw materials are primarily crushed by the rotatable upper blade in the process of sliding down the inclined plate, the raw materials with large particles are primarily crushed, and the smoothness of sliding down the raw materials can be improved by the inclined arrangement of the inclined plate; the crushing effect of the raw materials can be improved by secondarily crushing the raw materials through the rotating lower blade, and after primary crushing, the size of raw material particles is reduced, so that the load and impact of the raw materials falling from the upper opening to the lower opening on the lower blade are also smaller, on one hand, the crushing effect of the raw materials is improved, and on the other hand, the load born by the lower blade can be reduced to prolong the service life of the lower blade; in a word, the crushing effect of the raw materials can be improved by crushing the raw materials twice through the upper blade and the lower blade; the chopped raw materials are screened by the swinging rocking plate after falling onto the rocking plate, raw materials with the particle size meeting the requirement pass through the fine grille and fall into a finished product box, raw materials with the particle size not meeting the requirement slide to the coarse grille along the inclination of the rocking plate and fall into a transition box, and then raw materials in the transition box are poured into a feed inlet for chopping again; wherein, the in-process of blade shredding raw materials under the main shaft drives still divides efficiency, and sliding connection's top strip on the rocker plate can also be effectively cleared up thin grid and take place the jam phenomenon in order to prevent thin grid, and then improves the screening effect and the efficiency of rocker plate to the raw materials on the whole. In summary, the invention provides a raw material crushing device of a denitration catalyst, which has higher crushing efficiency, higher screening efficiency after crushing raw materials and can improve the utilization rate of waste catalysts.

The technical scheme of the invention is that an operation method of a denitration catalyst raw material crushing device is provided, and the operation method comprises the following steps:

a: pouring denitration catalyst raw materials into the feed inlet, enabling the raw materials to flow upwards along the inclined plane of the inclined plate, enabling the raw materials to be primarily chopped by the upper rotating blade in the raw material flowing process, and enabling the primarily chopped raw materials to fall into the lower half of the storage bin from the upper opening to the lower opening.

b: when the primarily chopped raw materials flow through the lower opening, the rotating lower blade can cut the raw materials for the second time, and the twice cut raw materials fall onto the rocking plate to be screened.

c: when the twice chopped raw materials flow through the fine grids, the raw materials with the particle size meeting the required value can fall into a finished product box through the fine grids; when the first magnet on the second gear rotates to the second magnet position, the first magnet is matched with the second magnet to drive the rocking plate to rotate, and the rocking plate is separated from the cylindrical pin; when the first magnet is far away from the second magnet, the tension spring pulls the rocking plate to reset to the cylindrical pin position, and the speed of raw materials flowing from the hinge point to the cylindrical pin is increased in the rocking process of the rocking plate; the raw materials with the particle size exceeding the required value fall into a transition box through a coarse grid; when the third magnet and the fourth magnet on the first gear are matched with the fifth magnet on the sliding block, the top bar on the frame can be driven to periodically enter and exit the opening on the fine grid, so that the raw materials with the particle size meeting the required value are accelerated to be discharged from the fine grid to a finished product box.

d: and pouring the raw materials in the transition box into the feed inlet again for re-cutting, and transferring the raw materials in the finished product box to the next working procedure.

Compared with the prior art, the operation method of the raw material crushing device of the denitration catalyst can realize twice crushing of the raw materials by the upper blade and the lower blade, improves the raw material crushing effect of the denitration catalyst, effectively screens the crushed raw materials through the swinging rocking plate, ensures that the raw materials in a finished product box meet the production requirement, and can clear the fine grid area through the top strip which is connected to the rocking plate in a sliding manner, thereby improving the effectiveness and the persistence of the rocking plate in the screening work and further improving the screening efficiency after the raw materials are crushed. In addition, in order to improve the utilization rate of the waste catalyst, impurities such as powdered carbon ash in the waste catalyst can be sieved in a powder form, catalyst fragments required by production are left, and the catalyst fragments can be changed into clean raw materials through a subsequent cleaning process to manufacture a brand new honeycomb denitration catalyst. In summary, the invention provides an operation method of a denitration catalyst raw material crushing device, which has higher crushing efficiency, higher screening efficiency after raw material crushing and capability of improving the utilization rate of waste catalysts.

Drawings

FIG. 1 is a schematic diagram of a raw material pulverizing apparatus for a denitration catalyst according to the present invention.

Fig. 2 is a schematic structural view of a first gear, a second gear and a rocker plate according to the present invention.

FIG. 3 is a schematic view of the structure of the rocker plate according to the present invention.

Fig. 4 is a schematic structural view of a top bar on a frame according to the present invention.

The figure shows: 1. the feed bin, 2, the feed inlet, 3, the swash plate, 4, the diaphragm, 5, the upper opening, 6, the lower opening, 7, the riser, 8, the pivot, 9, the upper blade, 10, the lower blade, 11, the main shaft, 12, the hinge point, 13, the rocker, 14, the thin grid, 15, the thick grid, 16, the finished product case, 17, the transition case, 18, first gear, 19, the support, 20, the second gear, 21, first magnet, 22, second magnet, 23, cylindric lock, 24, extension spring, 25, first opening, 26, supporting shoe, 27, slider, 28, frame, 29, top bar, 30, third magnet, 31, fourth magnet, 32, fifth magnet, 33, upper stop, 34, lower stop, 35, second opening.

Detailed Description

The invention is further described below with reference to the drawings and the detailed description.

As shown in the figure, the raw material crushing device of the denitration catalyst comprises a bin 1, wherein the bin 1 is of a cylindrical structure, the bin 1 is made of stainless steel, the specific size of the bin 1 can be determined according to the crushing quantity of raw materials, a feed inlet 2 is arranged above the bin 1, the feed inlet 2 is arranged at the outer edge above the bin 1, and the feed inlet 2 is vertically arranged; the inside of the feed bin 1 is provided with an inclined plate 3 and a transverse plate 4 at intervals, the inclined plate 3 is positioned above the transverse plate 4, the inclined plate 3 is obliquely arranged in the feed bin 1, one side, far away from the feed inlet 2, of the inclined plate 3 is provided with an upper opening 5, the transverse plate 4 is provided with a lower opening 6 below the upper opening 5, and the inclined plate 3 is connected with the transverse plate 4 through a vertical plate 7; the inclined plate 3 is rotationally connected with upper blades 9 through a rotating shaft 8, the rotating shaft 8 is rotationally connected to the inclined plate 3 through bearings, the number of the upper blades 9 is 6, the 6 upper blades 9 are uniformly distributed on the peripheral wall of the rotating shaft 8 around the axis of the rotating shaft 8, the upper blades 9 are welded with the outer wall of the rotating shaft 8, and the plane where the upper blades 9 rotate is parallel to the inclined plate 3; a push rod is arranged above the upper blade 9, and when the upper blade 9 rotates around the rotating shaft 8, the push rod rotates along with the upper blade 9, so that the push rod can play a role in pushing raw materials to flow upwards in the direction of the opening 5, or the push rod can accelerate the flow speed of the raw materials from the feed inlet 2 to the opening 5; on the same vertical plane, the feed inlet 2 and the upper opening 5 are respectively positioned at two sides of the rotary shaft 8, so that the raw materials can be preliminarily chopped by the upper blade 9 which rotates in the process of flowing from the feed inlet 2 to the upper opening 5, and the raw material chopping efficiency of the upper blade 9 is improved; the transverse plate 4 is rotationally connected with lower blades 10 through a main shaft 11, the main shaft 11 is rotationally connected to the transverse plate 4 through bearings, the number of the lower blades 10 is 12, 12 lower blades 10 are uniformly distributed on the peripheral wall of the main shaft 11 around the axis of the main shaft 11, the lower blades 10 are welded on the outer wall of the main shaft 11, a motor for driving the main shaft 11 to rotate is arranged in the storage bin 1, and the main shaft 11 and the rotary shaft 8 are driven through a gear assembly; the transverse plate 4 is provided with a transmission shaft through a bearing, the lower end of the transmission shaft is in transmission with the main shaft 11 through a gear, and the upper end of the transmission shaft is in transmission with the rotary shaft 8 through a bevel gear, so that the rotary shaft 8 can be driven to rotate when the main shaft 11 rotates; the bin 1 is rotationally connected with a rocking plate 13 below the transverse plate 4 through a hinge point 12, the hinge point 12 is positioned below the lower opening 6, the rocking plate 13 is provided with a fine grid 14 in a region below the lower opening 6, the rocking plate 13 is provided with a coarse grid 15 in a region far away from the lower opening 6, and the width of an upper open slot of the fine grid 14 is smaller than that of an upper open slot of the coarse grid 15; for example, the fine grille 14 and the coarse grille 15 are that a plurality of open slots through which the chopped raw materials can pass are formed in the rocking plate 13, the open slots are of long-strip-shaped structures, and a finished product box 16 and a transition box 17 are respectively arranged in the open slots on the fine grille 14; the lower end of the main shaft 11 is provided with a first gear 18, the bin 1 is rotationally connected with a second gear 20 which is used for meshing transmission with the first gear 18 through a bracket 19, a vibration component which is used for driving the rocking plate 13 to swing in the bin 1 is arranged between the second gear 20 and the rocking plate 13, and an anti-blocking component which is used for cleaning the fine grid 14 is arranged between the first gear 18 and the rocking plate 13. The transverse plate 4 is horizontally arranged in the storage bin 1, namely, the transverse plate 4 is perpendicular to the axial direction of the storage bin 1, and the included angle between the inclined plate 3 and the transverse plate 4 is 15 degrees.

The free end of the upper blade 9 extends to the upper opening 5 area, that is, the free end of the upper blade 9 extends to the position of the inner peripheral wall of the bin 1, and a gap is reserved between the tail end of the upper blade 9 and the inner peripheral wall of the bin 1; the free end of the lower blade 10 extends to the area of the lower opening 6, namely, the free end of the lower blade 10 extends to the position of the inner peripheral wall of the storage bin 1, and a gap is reserved between the tail end of the lower blade 10 and the inner peripheral wall of the storage bin 1.

The vibration component is characterized in that a first magnet 21 is embedded on the second gear 20, and the axial distance between the first magnet 21 and the second gear 20 is larger than zero; the rocking plate 13 is embedded with a second magnet 22 right below the first magnet 21, the first magnet 21 and the second magnet 22 repel each other, and the second magnet 22 is arranged at the end part of the rocking plate 13 far from the hinging point 12; for example, the first magnet 21 has a downward N pole and an upward S pole, and the second magnet 22 has an upward N pole and a downward S pole, as shown in fig. 2; conversely, the first magnet 21 has an upward N pole and a downward S pole, and the second magnet 22 has a downward N pole and an upward S pole; the bin 1 is provided with a cylindrical pin 23 which is used for abutting against or separating from the rocking plate 13 above the rocking plate 13, and a tension spring 24 which is used for pulling the rocking plate 13 to abut against the cylindrical pin 23 is arranged between the bin 1 and the rocking plate 13; when the second magnet 22 is located right below the first magnet 21, the repulsive force between the first magnet 21 and the second magnet 22 is greater than the tension of the tension spring 24 on the rocker plate 13; in the vertical direction, the position of the cylindrical pin 23 is lower than the position of the hinging point 12, that is, when the rocking plate 13 abuts against the cylindrical pin 23, the rocking plate 13 is in a tilting state with low left and high right, and the area of the fine grating 14 on the rocking plate 13 is higher than the area of the coarse grating 15, so that the chopped raw materials can flow from the area of the fine grating 14 to the area of the coarse grating 15, and further the screening work of the chopped raw materials is facilitated. Specifically, the rocking plate 13 is provided with a second opening 35 for installing the second magnet 22 in the area of the thick grille 15, when the first magnet 21 rotates to above the second magnet 22 following the second gear 20, the second magnet 22 and the rocking plate 13 move downwards under the action of the repulsive force between the first magnet 21 and the second magnet 22, that is, the rocking plate 13 rotates anticlockwise around the hinge point 12 against the tension constraint of the tension spring 24, and the rocking plate 13 is separated from the cylindrical pin 23; for example, when the tension of the tension spring 24 to the rocker plate 13 is set to be 10N, the repulsive force between the first magnet 21 and the second magnet 22 is set to be 50N, and when the first magnet 21 rotates above the second magnet 22, the second magnet 22 can be driven to overcome the tension of the tension spring 24 and drive the rocker plate 13 to rotate anticlockwise; when the first magnet 21 rotates along with the second gear 20 and leaves above the second magnet 22, the tension spring 24 can rapidly pull the rocking plate 13 to lean against the cylindrical pin 23; therefore, the rocking plate 13 periodically rotates, rocks and vibrates to enable the chopped raw materials on the rocking plate 13 to flow leftwards and downwards along the slope, so that the screening speed of the chopped raw materials by the fine grids 14 and the coarse grids 15 is increased, and the chopped raw materials can be prevented from being piled up in the area of the fine grids 14. The cooperation between the first magnet 21 on the second gear 20 and the second magnet 22 on the rocking plate 13 only exists when the first magnet 21 is located right above the second magnet 22, and once the first magnet 21 leaves the second magnet 22, the first magnet is quickly reset to the position of the cylindrical pin 23, and the impact between the rocking plate 13 and the cylindrical pin 23 is rigid impact, so that the vibration effect on the rocking plate 13 is optimal, further, the chopped raw materials on the rocking plate 13 are greatly vibrated, and the raw materials are prevented from piling on the rocking plate 13.

The anti-blocking assembly is characterized in that a first opening 25 is formed in the middle position of the coarse grille 15 and the fine grille 14 of the rocking plate 13, a supporting block 26 is fixedly connected to the first opening 25, a sliding block 27 is connected to the supporting block 26 in a sliding manner through a dovetail groove, a frame 28 is connected to the lower portion of the fine grille 14 through the sliding block 27, a top strip 29 used for being inserted into the opening of the fine grille 14 is arranged on the frame 28, the size of the top strip 29 is smaller than that of an opening groove on the fine grille 14 so as to ensure that the top strip 29 can enter and exit the opening groove on the fine grille 14, namely the sliding block 27 can drive the top strip 29 on the frame 28 to slide relative to the rocking plate 13; the third magnet 30 and the fourth magnet 31 are embedded on the first gear 18, the axial distance between the third magnet 30 and the fourth magnet 31 and the first gear 18 is larger than zero, and the axial distance between the third magnet 30 and the fourth magnet 31 and the first gear 18 are equal; a fifth magnet 32 is embedded on the slide block 27, the fifth magnet 32 and the third magnet 30 are attracted to each other through magnetic force, and the fifth magnet 32 and the fourth magnet 31 are mutually repelled through magnetic force; the bin 1 is provided with an upper stopper 33 above the rocker 13 for abutting against or disengaging from the upper end of the slider 27, and the bin 1 is provided with a lower stopper 34 below the rocker 13 for abutting against or disengaging from the lower end of the slider 27. Wherein the fourth magnet 31 has a downward N pole and an upward S pole, the third magnet has an upward N pole and a downward S pole, and the fifth magnet has an upward N pole and a downward S pole; when the third magnet 30 rotates above the fifth magnet 32, the third magnet 30 drives the sliding block 27 embedded with the fifth magnet 32 to slide upwards on the supporting block 26 until the upper end of the sliding block 27 abuts against the upper stop block 33, and during the sliding upwards of the sliding block 27, the top strip 29 on the frame 28 enters the opening on the fine grille 14, so that the opening blocked on the fine grille 14 is dredged; when the fourth magnet 31 rotates above the fifth magnet 32, the repulsive force between the fourth magnet 31 and the fifth magnet 32 can ensure that the sliding block 27 moves downward to the position of the lower stop block 34, so that the opening on the fine grille 14 is opened for the chopped raw material to pass through and drop into the finished product box; here, the forces of the third magnet 30 and the fourth magnet 31 on the fifth magnet 32 and the slide block 27 are applied to the upper stop block 33 and the lower stop block 34, the rotation of the rocker plate 13 is not affected, and the non-woven fabric is connected at the junction between the slide block 27 and the support block 26, so that the cut raw materials are prevented from entering into the dovetail groove between the slide block 27 and the support block 26 to affect the movement of the slide block 27.

The direction of movement of the slide block 27 is perpendicular to the rocking plate 13, and the frame 28 is arranged in parallel with the rocking plate 13, so that the top strip 29 on the frame 28 can smoothly enter the opening on the fine grid 14.

Wherein a coarse crushing device for crushing raw materials can be arranged at the position of the feed inlet 2, namely, the position of the feed inlet 2 is rotationally connected with four rollers, and the rollers are rotationally connected with the position of the feed inlet 2 through bearings; four rollers are placed in parallel, a plurality of rough breaking knives are arranged on each roller in parallel, the rough breaking knives on the rollers are respectively and crosswise arranged, collision and contact are not generated between the rough breaking knives and the rough breaking knives, the rough breaking knives and the rough breaking knives can be adjusted according to actual production requirements, and the rollers are driven by a motor, a speed reducer and a transmission gear to rotate. The dust removing system can be additionally arranged in the crushing process and consists of a dust remover and a pipeline, and the dust removing system is connected to the inlet of the dust remover by the pipeline only by additionally arranging a dust removing interface above the feed inlet for collecting dust at the feed inlet. In addition, the whole device can be controlled by a PLC control system.

The operation method of the raw material crushing device of the denitration catalyst comprises the following steps:

a: starting a power supply of a control cabinet, starting a dust remover and a fan on a touch screen, inputting the rotating speed of a roller motor and the rotating speed of a conveyor motor, throwing a scrapped catalyst unit into a roller position for rough breaking treatment, and dropping a denitration catalyst subjected to rough breaking onto an inclined plate 3 for subsequent fine breaking treatment; the denitration catalyst raw material can be poured from the feed inlet 2, the raw material flows to the direction of the upper opening 5 along the slope on the sloping plate 3, the raw material can be primarily chopped by the upper blade 9 which rotates in the raw material flowing process, and the primarily chopped raw material falls to the lower opening from the upper opening 5 and enters the lower half part of the storage bin 1.

b: when the primarily shredded raw material flows through the lower opening 6, the rotating lower blade 10 shreds the raw material a second time, and the twice shredded raw material falls onto the rocker plate 13 for screening.

c: the twice shredded raw materials may fall through the fine grill 14 into the finishing tank 16 while passing through the fine grill 14; when the first magnet 21 on the second gear 20 rotates to the position of the second magnet 22, the first magnet is matched with the second magnet 22 to drive the rocking plate to rotate, and the rocking plate 13 is separated from the cylindrical pin 23; when the first magnet 21 is far away from the second magnet 22, the tension spring 24 pulls the rocking plate 13 to reset to the position of the cylindrical pin 23, and the speed of raw materials flowing from the hinge point 12 to the cylindrical pin 23 can be increased in the swinging process of the rocking plate 13; the raw materials with the particle size exceeding the required value fall down to the transition box 17 through the coarse grille 15; when the third magnet 30 and the fourth magnet 31 on the first gear 18 are matched with the fifth magnet 32 on the sliding block 27, the top strip 29 on the frame 28 is driven to periodically enter and exit the opening on the fine grid 14, so that the raw materials with the particle size meeting the required value are accelerated to be discharged from the fine grid 14 to the finished product box 16.

d: the raw materials in the transition box 17 are poured into the feed inlet 2 again for re-cutting, and the raw materials in the finished product box 16 are transferred to the next process.

In general, the device can realize the recovery and reutilization of the waste catalyst and the crushing of raw materials; specifically, after the waste catalyst is processed by a coarse breaking device, the honeycomb denitration catalyst is extruded and molded by subsequent fine breaking. The device can improve the production efficiency, reduce the labor intensity of staff, and workers only need to pour the catalyst units into the feed bin through a forklift, and the rest processes can realize automatic control; in addition, the dust pollution of operators is reduced, so that the production environment is more sanitary.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a raw materials reducing mechanism of denitration catalyst, it includes feed bin (1), and feed inlet (2), its characterized in that are equipped with above feed bin (1): the automatic feeding device is characterized in that an inclined plate (3) and a transverse plate (4) are arranged in the storage bin (1) at intervals, the inclined plate (3) is located above the transverse plate (4), the inclined plate (3) is obliquely arranged in the storage bin (1), an upper opening (5) is formed in one side, away from the feed inlet (2), of the inclined plate (3), a lower opening (6) is formed in the position, below the upper opening (5), of the transverse plate (4), and the inclined plate (3) is connected with the transverse plate (4) through a vertical plate (7); the inclined plate (3) is rotationally connected with an upper blade (9) through a rotary shaft (8), and the plane where the upper blade (9) rotates is parallel to the inclined plate; the transverse plate (4) is rotationally connected with a lower blade (10) through a main shaft (11), a motor for driving the main shaft (11) to rotate is arranged in the storage bin (1), and the main shaft (11) and the rotary shaft (8) are driven through a gear assembly; the bin (1) is rotationally connected with a rocking plate (13) below the transverse plate (4) through a hinge point (12), the hinge point (12) is positioned below the lower opening (6), the rocking plate (13) is provided with a thin grid (14) in a region below the lower opening (6), the rocking plate (13) is provided with a thick grid (15) in a region far away from the lower opening (6), and the width of an upper open slot of the thin grid (14) is smaller than that of the thick grid (15); the bin (1) is provided with a finished product box (16) below the fine grid, and the bin (1) is provided with a transition box (17) below the coarse grid (15); a first gear (18) is arranged at the lower end part of the main shaft (11), and a second gear (20) which is used for meshing transmission with the first gear (18) is rotationally connected with the stock bin (1) through a bracket (19); a first magnet (21) is embedded on the second gear (20), and the axial distance between the first magnet (21) and the second gear (20) is larger than zero; the rocking plate (13) is embedded with a second magnet (22) right below the first magnet (21), the first magnet (21) and the second magnet (22) repel each other, and the second magnet (22) is arranged at the end part of the rocking plate (13) far away from the hinge point; the bin (1) is provided with a cylindrical pin (23) which is used for abutting against or separating from the rocking plate (13) above the rocking plate (13), and a tension spring (24) which is used for pulling the rocking plate (13) to abut against the cylindrical pin (23) is arranged between the bin (1) and the rocking plate (13); when the second magnet (22) is positioned right below the first magnet (21), the repulsive force between the first magnet (21) and the second magnet (22) is larger than the pulling force of the tension spring (24) on the rocking plate (13); in the vertical direction, the position of the cylindrical pin (23) is lower than the position of the hinging point (12); the swing plate (13) is provided with a first opening (25) at the middle position of the coarse grille (15) and the fine grille (14), the first opening is fixedly connected with a supporting block (26), the supporting block (26) is slidably connected with a sliding block (27) through a dovetail groove, the sliding block (27) is connected with a frame (28) below the fine grille (14), and the frame (28) is provided with a top strip (29) for being inserted into the opening of the fine grille (14); a third magnet (30) and a fourth magnet (31) are embedded on the first gear (18), the axial distance between the third magnet (30) and the fourth magnet (31) and the first gear (18) is larger than zero, and the axial distance between the third magnet (30) and the fourth magnet (31) and the first gear (18) is equal; a fifth magnet (32) is fitted to the slider (27), the fifth magnet (32) and the third magnet (30) are attracted to each other, and the fifth magnet (32) and the fourth magnet (31) are repelled from each other.

2. The raw material pulverizing device for a denitration catalyst according to claim 1, characterized in that: the transverse plate (4) is horizontally arranged in the storage bin (1), and the included angle between the inclined plate (3) and the transverse plate (4) is 15 degrees.

3. The raw material pulverizing device for a denitration catalyst according to claim 1, characterized in that: the free end of the upper blade (9) extends to the area of the upper opening (5), and the free end of the lower blade (10) extends to the area of the lower opening (6).

4. The raw material pulverizing device for a denitration catalyst according to claim 1, characterized in that: the moving direction of the sliding block (27) is perpendicular to the rocking plate (13), and the frame (28) is arranged in parallel with the rocking plate (13).

5. The raw material pulverizing device for a denitration catalyst according to claim 1, characterized in that: the bin (1) is provided with an upper stop block (33) which is used for abutting against or separating from the upper end part of the sliding block (27) above the rocking plate (13), and the bin (1) is provided with a lower stop block (34) which is used for abutting against or separating from the lower end part of the sliding block (27) below the rocking plate (13).

6. A method of operating a raw material crushing apparatus for a denitration catalyst according to any one of claims 1 to 5, comprising the steps of:

a: pouring denitration catalyst raw materials from a feed port (2), enabling the raw materials to flow upwards to an opening (5) along the inclination of an inclined plate (3), primarily cutting the raw materials by an upper blade (9) which rotates in the flowing process of the raw materials, and enabling the primarily cut raw materials to fall into a lower opening from the upper opening (5) and enter the lower half part of a storage bin (1);

b: when the primarily chopped raw materials flow through the lower opening (6), the rotating lower blade (10) can cut the raw materials for the second time, and the twice cut raw materials fall onto the rocking plate (13) for screening;

c: when the twice chopped raw materials flow through the fine grid (14), the raw materials with the particle size meeting the required value can fall into a finished product box (16) through the fine grid (14); when the first magnet (21) on the second gear (20) rotates to the position of the second magnet (22), the first magnet and the second magnet (22) cooperate to drive the rocking plate to rotate, and the rocking plate (13) is separated from the cylindrical pin (23); when the first magnet (21) is far away from the second magnet (22), the tension spring (24) pulls the rocking plate (13) to reset to the position of the cylindrical pin (23), and the speed of raw materials flowing from the hinging point (12) to the cylindrical pin (23) can be accelerated in the swinging process of the rocking plate (13); the raw materials with the particle size exceeding the required value fall into a transition box (17) through a coarse grid (15); when the third magnet (30) and the fourth magnet (31) on the first gear (18) are matched with the fifth magnet (32) on the sliding block (27), the top strip (29) on the frame (28) can be driven to periodically enter and exit the opening on the fine grid (14), so that the raw materials with the particle size meeting the required value are accelerated to be discharged from the fine grid (14) to the finished product box (16); d: the raw materials in the transition box (17) are poured into the feed inlet (2) again for cutting up again, and the raw materials in the finished product box (16) are transferred to the next working procedure.