CN214717278U

CN214717278U - Multi-rotor composite impact pulverizer

Info

Publication number: CN214717278U
Application number: CN202023106401.5U
Authority: CN
Inventors: 王秋珍; 李莎; 吴建兵
Original assignee: Hubei University of Education
Current assignee: Hubei University of Education
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-11-16
Anticipated expiration: 2030-12-21

Abstract

The utility model provides a many rotors compound impact flour mill relates to the mining machinery field. The composite impact grinding machine consists of a frame, a feeding part, a power transmission part, a composite impact grinding part, a finished product extraction part and the like, wherein the composite impact grinding part consists of a multi-rotor impact assembly and an anti-impact assembly. The impact assembly is a standard single rotor, the impact assembly is contained in the counterattack rotor, and the two feed inlets are symmetrically arranged at the upper part of the crushing cavity. The finished product is extracted by extraction pipes on two sides of the top through an exhaust fan, a negative pressure working state is formed in the machine, a motor drives a driving gear and peripheral driven gears to rotate, a rotor shaft and an impact block are further driven to throw and impact materials outwards, the bottom end of a central shaft drives a counterattack rotor to rotate times in the direction opposite to that of a standard rotor through a reverse speed reducer, and the materials are counterattack and crushed. The beneficial effects are that: the machine production can be standardized; adjusting the standard rotor configuration quantity to change the hourly output; the requirement of large-scale production of a grinding enterprise is met.

Description

Multi-rotor composite impact pulverizer

Technical Field

The utility model relates to a many rotors compound impact mill in mining machinery field, but wide application in the system sand of fragile materials such as mine, metallurgy, chemical industry, building materials, powder process link.

Background

The impact mill is energy-saving and efficient, and is widely applied to part of powder-making and sand-making enterprises in the industries of mines, metallurgy, chemical engineering, building materials and the like in China. The representative equipment is impact grinding equipment derived based on the patent number ZL200620097633.X (frame type pre-grinding machine). However, in the actual use process, because a single inner rotor is adopted to throw and impact outwards, and an outer rotor is counterstruck inwards, the linear velocity of the impact of the thrown materials of the inner rotor and the outer rotor and the volume of the crushing cavity determine the machine hour yield of the equipment. Because of the limitation of the factors such as the rated rotating speed of the bearing, the dynamic balance and the like, the inner rotor cannot be infinitely amplified, so the expansion of the production capacity of equipment is limited, and the requirement of large-scale production of a grinding enterprise cannot be met. For example, the highest machine hour output of the current impact grinding micro-powder equipment taking the inner rotor and the outer rotor as impact pieces is about 60 tons, the daily output of many cement enterprises is 2000-10000 tons at present, namely the machine hour output of the grinding equipment is more than 100 tons, and the requirement of the enterprises on large-scale production can be met. At present, most of large-scale production enterprises use ball mills for grinding production, the electric energy utilization rate is less than 3%, and the production site has serious environmental pollution, so that upgrading and modification are urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's current situation, for the grinding large-scale production of fragile materials such as mine, metallurgy, chemical industry, building materials provides a multi-rotor composite impact pulverizer, specific content is:

a multi-rotor composite impact pulverizer is composed of machine frame, feeding unit, power driver, multi-rotor composite impact pulverizing unit, finished product extracting unit, lubricating unit and running monitor.

The multi-rotor composite impact powder grinding part is composed of a multi-rotor impact assembly and an anti-impact assembly, wherein the multi-rotor impact assembly is composed of a standard single rotor, the multi-rotor impact assembly is formed by arranging 2-8 standard single rotors around a central shaft, the anti-impact assembly is composed of an anti-impact support, a conical screen and an anti-impact rotor, and the multi-rotor impact assembly is contained in the anti-impact rotor.

The standard single rotor forming the multi-rotor impact assembly unit is formed by combining a rotor shaft and impact blocks, the impact blocks are divided into 2-3 layers, 3-8 impact surfaces are correspondingly arranged on each layer according to the requirement of product discharging granularity, the number of the standard single rotors is arranged according to the equipment hourly output required by a user, 2-8 standard single rotors can be selected to be uniformly distributed, the rotor shaft is vertically parallel to the central shaft and surrounds the central shaft serving as the circle center, and the upper end of each rotor shaft is fixed by a driven gear through a key.

The counterattack component is composed of a counterattack support, a conical sieve and a counterattack rotor, the counterattack support is connected to an output shaft at the lower end of a reverse speed reducer through a key, the bottom end of the reverse speed reducer is installed on a central support through a thrust roller bearing, the upper end of the reverse speed reducer is fixed with a lower supporting plate of equipment, the input shaft end of the reverse speed reducer is connected with a central shaft, the counterattack support is a cross support which is processed and formed by wear-resistant alloy steel and provided with a shaft hole in the center, the top end of the counterattack support is connected with a small opening end of the inverted conical sieve which is formed by punching and rolling a wear-resistant alloy plate, the large opening end of the conical sieve is connected with the lower end of a cylindrical counterattack rotor which is rolled by the wear-resistant alloy plate, and the upper end of the counterattack rotor is not connected or restrained.

The power driving part drives the multi-rotor impact assembly to act, a triangular belt wheel of a motor transmits the power to a central shaft through a triangular belt, a driving gear fixed by a key is arranged on the central shaft, and the driving gear is meshed with a driven gear which is uniformly distributed on the periphery and fixed on a standard rotor shaft to drive the standard rotor and the impact block to rotate at a high speed.

The power driving part drives the reverse impact assembly to act, and a reverse speed reducer is connected to the bottom end of the central shaft. When the central shaft rotates, the reverse speed reducer is driven to rotate reversely, and the counterattack support, the conical screen and the counterattack rotor are driven to rotate in the direction opposite to that of the standard rotor.

The feeding part is mainly a symmetrically arranged feeding pipe arranged at the upper part of the crushing cavity. The upper part of the feeding pipe is connected with a material stabilizing bin, and the lower part of the feeding pipe is inwards inclined and aligned to an impact block on a standard rotor.

The finished product extraction part is an extraction pipe arranged at two sides of the top part, and the top ends of the extraction pipes are combined and then connected with an exhaust fan.

When the multi-rotor impact assembly works, materials are symmetrically fed into the standard rotor in the multi-rotor impact assembly through the feeding hole, the impact surfaces of the impact blocks on the standard rotor scatter the materials to the counterattack rotor at the same speed in the same rotating direction, and meanwhile, impact is mutually scattered among the multiple rotors.

When the impact type centrifugal separator works, the impact rotor and the conical screen rotate in the direction opposite to the rotating direction of the standard rotor, and materials thrown out of the standard rotor are quickly impacted.

The materials are between the standard rotors, between the standard rotors and the counterattack rotors and between the paths of impact and counterattack, repeated collision occurs for many times, the crystal grains slide and tear on the interface, internal cracks diffuse to the periphery, and the materials are crushed into micro powder.

The qualified finished products are extracted by an exhaust fan and conveyed to a warehouse, and the granularity and the fineness of the qualified finished products are controlled by the air speed and the pressure of the exhaust fan. Part of coarse powder which is not extracted and coarse powder in the inverted conical sieve enter a closed circulation system through a feed opening. Due to the exhaust fan, a negative pressure working state is formed inside the machine during working.

The utility model has the advantages that: the production of the machine can be standardized and serialized, so that the production cost and the management cost are saved; the hourly output is changed to meet the requirements of users by adjusting the configuration number of the standard rotors; can meet the large-scale production requirements of most of grinding enterprises.

Drawings

FIG. 1 is a schematic perspective view of a multi-rotor composite impact pulverizer of the present invention;

fig. 2 is an internal structural view of the housing 2 in fig. 1;

FIG. 3 is a schematic structural view of a multi-rotor impact assembly 5 and a counter-impact assembly 4;

FIG. 4 is a schematic view of the connection of the multi-rotor impact assembly 5 to the power drive section;

FIG. 5 is a schematic view of the structure of a standard single rotor 8;

fig. 6 is a schematic view of the connection of the anti-shock assembly 4 to the power drive section.

In the figure: 1-frame, 2-shell, 3-motor, 4-counter impact component, 5-multi-rotor impact component, 6-counter impact rotor, 7-conical screen, 8-standard single rotor, 9-supporting cover plate, 10-driving triangle belt wheel, 11-driven triangle belt wheel, 12-triangle belt, 13-driving gear, 14-driven gear, 15-feeding pipe, 16-finished product extracting pipe, 17-lower supporting plate, 18-central shaft, 19-reverse speed reducer, 20-counter impact support, 21-central support, 22-rotor bearing position, 23-rotor shaft, 24-throwing impact block, 25-rotor bearing, 26-fine powder cavity and 27-crushing cavity.

Detailed Description

Referring to fig. 1 and 2, a frame 1 is formed by welding section steel, a pillar of the frame is connected with a foundation through an embedded part, and a supporting cover plate 9 is supported and fixed by the frame 1, which is the key for normal operation of the whole machine. The shell 2 is fixed on the frame 1 and the supporting cover plate 9, the shell 2 is a protective cover for safe production and negative pressure production, the upper part is a cylinder rolled by a steel plate, and the lower end is an inverted round table rolled by the steel plate.

Referring to fig. 3, the multiple rotor milling assembly is disposed within the housing 2 and includes a counter impact assembly 4 and a multiple rotor impact assembly 5 disposed inside the counter impact assembly 4.

The counterattack assembly 4 includes a counterattack rotor 6, a conical screen 7 and a counterattack bracket 20. The axis of the impact rotor 6 coincides with the axis of the shell 2, the upper end opening is not connected, and a distance of 6-10 mm is reserved between the upper end opening and the supporting cover plate 9. The lower end is connected with the big round end of the inverted conical screen 7. The small round end of the inverted conical screen 7 is coupled to the supporting top end of the impact bracket 20. The center shaft hole of the reaction holder 20 is fixed to the output shaft end of the counter reduction gear 19 by a key. The impact bracket 20 is a cross bracket which is formed by processing wear-resistant alloy and provided with a shaft hole at the center. The inverted conical screen 7 is formed by punching and rolling a wear-resistant alloy plate, and a cylindrical counterattack rotor 6 rolled by the wear-resistant alloy plate is connected with the large opening end of the conical screen 7.

The multi-rotor impact assembly 5 is arranged on the inner side of the counterattack rotor 6, the multi-rotor impact assembly 5 is composed of 2-8 standard single rotors 8, and the number of the multi-rotor impact assemblies is configured according to the requirement of a user on the machine hour yield of the equipment. The rotor shaft 23 is vertically parallel to the central shaft 18 and is uniformly distributed around the central shaft as a circle center. The number of standard single rotors 8 is four in this embodiment.

Referring to fig. 5, the standard single rotor 8 includes a rotor shaft 23 and a plurality of scattering impact blocks 24 wound around the rotor shaft, the scattering impact blocks 24 may be set to 2 to 3 impact layers, each layer is uniformly provided with 3 to 8 impact surfaces in the circumferential direction, and the number of the impact layers and the number of the impact surfaces need to be considered in combination with the requirements of the yield and the discharge granularity.

Referring to fig. 1, 2 and 3, a crushing cavity 27 is formed between the multi-rotor impact assembly 5 and the counter-impact assembly 4, the feeding pipes 15 are symmetrically arranged on the supporting cover plate 9, the upper ends of the feeding pipes are connected with the material stabilizing bin, the lower ends of the feeding pipes are directly communicated with the crushing cavity 27, and the feed openings of the feeding pipes 15 are obliquely aligned with the standard rotor 8.

A fine material cavity 26 is formed between the impact assembly 4 and the shell 2, and the finished material ground in the grinding cavity 27 enters the fine material cavity 26 through the conical screen 7. A finished product extraction pipe 16 is arranged between the top end of the fine material cavity 26 and the supporting cover plate 9. The finished product extraction pipe 16 is connected with an exhaust fan to suck the finished product fine materials to a finished product warehouse for storage. The granularity of the finished product is controlled by the wind speed and the pressure of the exhaust fan. The air exhauster during operation still makes whole crocus process form negative pressure production.

Referring to fig. 1, 4 and 6, the driving part of the power driving part drives the multi-rotor impact assembly 5 to rotate at high speed by transmitting a driving triangle belt pulley 10 on the motor 3 to a driven triangle belt pulley 11 through a triangle belt 12 to drive a central shaft 18, wherein the central shaft 18 is provided with a driving gear 13 fixed by a key and then meshed with a driven gear 14 which is uniformly distributed around the periphery and fixed on a standard rotor shaft to drive a standard rotor 8 and an impact block 24.

The action of driving the counterimpact component 4 in the power driving part is that a reverse speed reducer 19 is connected at the bottom end of a central shaft 18, when the central shaft 18 rotates, the reverse speed reducer 19 is driven to rotate reversely, and the counterimpact support 20, the conical screen 7 and the counterimpact rotor 6 are driven to rotate in the direction opposite to the direction of the standard rotor 8.

Inner rotor assembly 5 arranges in the middle part of equipment, and it is fixed with lower part backup pad 17 common location by upper portion support apron 9, and lower part backup pad 17 is the cross, and its four corners department is equipped with four rotor bearing positions 22, and the epaxial, lower pot head of rotor shaft 23 of standard rotor 8 is equipped with bearing 25, bearing 25 install in on the rotor bearing position 22. High-strength support rods and locking nuts are arranged on the periphery of the multi-rotor impact assembly 5 to position and lock the support cover plate 9 and the lower support plate 17, and the number of the high-strength studs in the embodiment is four.

Referring to fig. 1, 2 and 3, when the multi-rotor composite impact pulverizer works, the motor 3 drives the multi-rotor impact assembly 5 to rotate at a high speed through the belt transmission mechanism and the gear transmission mechanism, and simultaneously, the counter impact assembly 4 is also driven to rotate in the opposite direction through the central shaft 18, and the material enters the crushing cavity 27 through the feeding pipe 15, is impacted to the standard rotor 8, is immediately thrown outward at a high speed by the throwing impact block 24, and is then impacted to the standard rotor 8 by the counter impact rotor 6. The materials are between the standard rotors 8, between the standard rotors 8 and the counterattack rotors 6, and between the routes of impact and counterimpact, repeated collision occurs for many times, the crystal grains slide and tear on the interface, internal cracks diffuse to the periphery, and the materials are crushed into micro powder. Qualified fine powder enters a fine material cavity 26 through a conical sieve, is extracted through a finished product extraction pipe 16 and enters a finished product warehouse; the coarse material is discharged from the bottom through the gap of the counterattack bracket 20 and enters a closed-loop circulation system.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a compound flour mill that strikes of many rotors, by frame, feeding, power drive, compound impact crocus of many rotors, finished product extraction, lubrication, operation monitoring part constitute its characterized in that: the multi-rotor composite impact powder grinding part is composed of a multi-rotor impact assembly and an anti-impact assembly, wherein the multi-rotor impact assembly is composed of a standard single rotor, the multi-rotor impact assembly is formed by arranging 2-8 standard single rotors around a central shaft, the anti-impact assembly is composed of an anti-impact support, a conical screen and an anti-impact rotor, and the multi-rotor impact assembly is contained in the anti-impact rotor.

2. A multi-rotor composite impact pulverizer as defined in claim 1, wherein: the standard single rotor forming the multi-rotor impact assembly unit is formed by combining a rotor shaft and impact blocks, the impact blocks are divided into 2-3 layers, 3-8 impact surfaces are arranged on each layer according to the requirement of product discharging granularity, 2-8 uniform distribution of the standard single rotors is arranged according to the yield, the rotor shaft is vertically parallel to the central shaft and surrounds the central shaft serving as the circle center, and the upper end of each rotor shaft is fixed by a driven gear through a key.

3. A multi-rotor composite impact pulverizer as defined in claim 1, wherein: the counterattack component is composed of counterattack support, conical sieve and counterattack rotor, the counterattack support is connected with the output shaft of the lower end of the reverse speed reducer by a key, the bottom end of the reverse speed reducer is installed on the central support through a thrust roller bearing, the upper end of the reverse speed reducer is fixed with the lower support plate of the equipment, the input shaft end of the reverse speed reducer is connected with the central shaft, the counterattack support is a cross support which is processed and formed by wear-resistant alloy and has a shaft hole in the center, the top end of the counterattack support is connected with the small opening end of the inverted conical sieve which is formed by punching and rolling the wear-resistant alloy plate, the large opening end of the conical sieve is connected with the lower end of the cylindrical counterattack rotor which is rolled by the wear-resistant alloy plate, and the upper end of the counterattack rotor is not connected or restrained.

4. A multi-rotor composite impact pulverizer as defined in claim 1, wherein: the power driving part comprises a motor for driving the multi-rotor impact assembly to rotate, a triangular belt wheel of the motor is transmitted to a central shaft through a triangular belt, a driving gear fixed by a key is arranged on the central shaft, and the driving gear is meshed with a driven gear which is uniformly distributed on the periphery and fixed on a standard rotor shaft to drive the standard rotor and the impact block to rotate at a high speed.

5. A multi-rotor composite impact pulverizer as defined in claim 1, wherein: the power driving part comprises a reverse speed reducer which drives the reverse impact assembly to rotate, the bottom end of the central shaft is connected with the reverse speed reducer, and the central shaft drives the reverse speed reducer to rotate reversely when rotating so as to drive the counterattack support, the conical screen and the counterattack rotor to rotate in the direction opposite to that of the standard rotor.