A ball mill return belt iron removal device

Abstract

A ball mill return belt iron removal device includes a plurality of horizontally arranged and forward-backward conveyor belts, all conveyor belts are arranged at intervals to form a conveyor assembly, a dust cover is provided on the upper side of the conveyor assembly, a sealing strip is provided at the lower end of the dust cover, a feed channel is provided on the upper side of the front end of the dust cover, a plurality of rows of first electromagnetic rods arranged horizontally and spaced up and down are provided in the feed channel to form a first electromagnetic rod group, a material discharge channel is provided at the rear side of the dust cover, a material receiving trough is provided at the lower side of the material discharge channel, an air nozzle with an opening arranged upward is provided in the gap between any two adjacent short-distance conveyor belts, the air nozzle is tilted backward, a plurality of second electromagnetic rods running left and right are provided on the path corresponding to each air nozzle in the dust cover to form a second electromagnetic rod group, and a plurality of second electromagnetic rods in each second electromagnetic rod group are arranged in a triangle. The device has good iron removal effect and self-maintenance function.

Description

Technical Field

[0001] The invention relates to a ball mill return belt iron removal device. Background Art

[0002] Ball mill is a commonly used grinding equipment in the powder industry. Large ball mills with grading systems are equipped with a return device. Belt return is a common way of return. Since the belt carries the material to make a plane linear motion, most of the traditional iron removal methods are to install a magnet at the bottom of the belt so that the iron in contact with the belt can be removed. However, due to the separation of a layer of belt in the middle, the magnetic field strength of the contact material surface is greatly reduced. In addition, the return material layer of large ball mills is thick. This iron removal method can only remove the iron in the bottom layer of the material layer that contacts the belt and is easier to adsorb. Therefore, the industry urgently needs a ball mill return belt device with good iron removal effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a ball mill return belt iron removal device, which has good iron removal effect and self-maintenance function.

[0004] In order to solve the above technical problems, the present invention provides a ball mill return belt iron removal device, comprising a plurality of short-distance conveyor belts arranged horizontally and running forward and backward, all of which are arranged at intervals in the forward and backward directions to form a conveyor assembly running forward and backward, a dust cover matching the conveyor assembly is provided on the upper side of the conveyor assembly, a sealing strip matching the conveyor assembly is provided at the lower end of the dust cover, a vertically arranged feed channel is provided on the upper side of the front end of the dust cover, the feed channel is directly opposite to the front part of the short-distance conveyor belt located at the frontmost side, and a plurality of rows of first electromagnetic bars spaced up and down and arranged horizontally are provided in the feed channel , forming a first electromagnetic rod group, any two adjacent rows of first electromagnetic rods in the first electromagnetic rod group are arranged alternately to cover the entire feeding channel, a feeding channel is provided at the rear end of the short-distance conveyor belt located at the rearmost side corresponding to the rear side of the dust cover, and a receiving trough is provided at the lower side of the feeding channel, and an air nozzle with an opening arranged upward is provided in the gap between any two adjacent short-distance conveyor belts, and the air nozzle is tilted backward, and a plurality of second electromagnetic rods running left and right are provided on the path corresponding to each air nozzle in the dust cover to form a second electromagnetic rod group, and a plurality of second electromagnetic rods in each second electromagnetic rod group are arranged in a triangle.

[0005] For the purpose of simple explanation, the ball mill return belt iron removal device described in the present invention is referred to as the device below.

[0006] The use method and advantages of this device: All the first electromagnetic rods and the second electromagnetic rods are powered on, all the air jets are turned on, and the conveyor belt is started. When the material enters the device from the feed channel, part of the iron filings are adsorbed on the first electromagnetic rod group, and the remaining part falls on the front of the first conveyor belt together with other materials. As the conveyor belt runs, the material is transported to the rear end of the conveyor belt and falls, and then the falling material is blown up by the air jet, passes through the corresponding second electromagnetic rod group and falls on the next conveyor belt, where the second electromagnetic rod group adsorbs part of the iron filings. In this way, by continuously passing through multiple conveyor belts, the iron filings can be adsorbed cleanly, and finally the iron-free material falls from the last conveyor belt and enters the receiving trough through the unloading channel, thereby achieving a better iron removal effect. When a stage of work is completed, turn off the power of the first electromagnetic rod and the second electromagnetic rod, and keep the air jet and the conveyor belt turned on. At this time, the iron filings adsorbed on the first electromagnetic rod and the second electromagnetic rod will fall on the corresponding conveyor belt and finally be collected at the tail.

[0007] In order to achieve better use effect of this device, the preferred scheme is as follows:

[0008] Preferably, the belt body of the conveyor belt comprises an outer layer in contact with the material, a middle layer, and an inner layer connected to the power wheel, which are connected in sequence along the thickness direction from the outside to the inside. The inner side of the inner layer is provided with a ruler edge that cooperates with the power wheel. The middle layer is a plurality of electromagnets arranged continuously along the length direction of the conveyor belt. A controller for controlling the electromagnets is provided inside each short-distance conveyor belt. Each electromagnet is electrically connected to the controller through a separate connecting line. The outer layer is made of anti-slip rubber material, and a plurality of thin iron wires are passed through the outer layer.

[0009] Under the control of the controller, some electromagnets that move to the lower side of the conveyor belt are powered off, and when they move to the upper side of the conveyor belt, they are powered on again. This allows the iron filings originally adsorbed on the conveyor belt to fall off, thereby increasing the adsorption effect. A thin iron wire is passed through the outer layer to act as a magnetic conductor, thereby increasing the adsorption force.

[0010] Preferably, a scraper cooperating with the conveyor belt is provided on the lower side of each short-distance conveyor belt, and an iron chip groove is correspondingly provided on the lower side of the scraper.

[0011] Some of the iron chips stuck on the surface of the conveyor belt can be removed by the scraper, thus ensuring the conveyor belt's ability to absorb the iron chips.

[0012] Preferably, a plurality of first dust removal air nozzles are provided at the position of the feed channel corresponding to the first electromagnetic rod group and facing the first electromagnetic rod group, and a plurality of second dust removal air nozzles are provided at the position of the dust cover corresponding to each second electromagnetic rod group and facing the second electromagnetic rod group.

[0013] When a stage of work is completed, the first and second electromagnetic rods are powered off and iron filings are cleaned. Often, some iron filings cannot fall off by their own gravity. Under the action of the first and second dust removal air nozzles, they can be blown off, thereby achieving a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the device.

[0015] Figure 2 It is the structural principle diagram of the conveyor belt electromagnet in this device. DETAILED DESCRIPTION

[0016] See also Figure 1 , Figure 2 A ball mill return belt iron removal device comprises three horizontally arranged and front-to-back short-distance conveyor belts 1, all of which are spaced apart in the front-to-back direction to form a front-to-back conveyor assembly, a dust cover 2 matching the conveyor assembly is provided on the upper side of the conveyor assembly, a sealing strip 3 matching the conveyor assembly is provided at the lower end of the dust cover 2, a vertically arranged feed channel 21 is provided on the upper side of the front end of the dust cover 2, the feed channel 21 is directly opposite to the front part of the short-distance conveyor belt 1 located at the front side, a plurality of rows of first electromagnetic bars spaced apart and spaced apart from each other and arranged horizontally are provided in the feed channel 21, forming a first electromagnetic bar group 4, Any two adjacent rows of first electromagnetic bars in the first electromagnetic bar group 4 are arranged alternately to cover the entire feed channel 21. A material discharge channel 22 is provided at the rear end of the short-distance conveyor belt 1 located at the rear side of the dust cover 2, corresponding to the rear end. A material receiving trough 221 is provided at the lower side of the material discharge channel 22. An air nozzle 5 with an opening arranged upward is provided in the gap between any two adjacent short-distance conveyor belts 1. The air nozzle 5 is tilted backward. A plurality of second electromagnetic bars running left and right are provided on the path corresponding to each air nozzle 5 in the dust cover 2 to form a second electromagnetic bar group 6. The plurality of second electromagnetic bars in each second electromagnetic bar group 6 are arranged in a triangle.

[0017] The belt body of the conveyor belt 1 includes an outer layer 11 in contact with the material, an intermediate layer 12, and an inner layer 13 connected to the power wheel, which are connected in sequence along the thickness direction. The inner side of the inner layer 13 is provided with a ruler edge that cooperates with the power wheel. The intermediate layer 12 is a plurality of electromagnets 121 arranged continuously along the length direction of the conveyor belt 1. A controller 14 for controlling the electromagnet 121 is provided inside each short-distance conveyor belt 1. Each electromagnet 121 is electrically connected to the controller 14 through a separate connecting line ( Figure 1 The outer layer 11 is made of non-slip rubber material, and a plurality of thin iron wires 111 are inserted into the outer layer 11.

[0018] A scraper 7 cooperating with the conveyor belt 1 is disposed on the lower side of each short-distance conveyor belt 1 , and an iron chip groove 71 is correspondingly disposed on the lower side of the scraper 7 .

[0019] Four first dust removal air nozzles 81 facing the first electromagnetic rod group 4 are provided at the position of the feed channel 21 corresponding to the first electromagnetic rod group 4, and two second dust removal air nozzles 82 facing the second electromagnetic rod group 6 are provided at the position of the dust cover 2 corresponding to each second electromagnetic rod group 6.

[0020] The use method and advantages of this device: all the first electromagnetic rods and the second electromagnetic rods are powered on, all the air jets 5 are turned on, and the conveyor belt 1 is started. When the material enters the device from the feed channel 21, part of the iron filings are adsorbed on the first electromagnetic rod group 4, and the remaining part falls on the front of the first conveyor belt 1 together with other materials. As the conveyor belt 1 runs, the material is transported to the rear end of the conveyor belt 1 and falls, and then the falling material is blown up by the air jet 5, passes through the corresponding second electromagnetic rod group 6 and falls on the next conveyor belt 1, and the second electromagnetic rod group 6 adsorbs part of the iron filings here. In this way, by continuously passing through multiple conveyor belts 1, the iron filings can be adsorbed cleanly, and finally the iron-free material falls from the last conveyor belt 1 and enters the receiving trough 221 through the unloading channel 22, thereby achieving a better iron removal effect. When a stage of work is completed, turn off the power of the first electromagnetic rod and the second electromagnetic rod, and keep the air jet 5 and the conveyor belt 1 turned on. At this time, the iron filings adsorbed on the first electromagnetic rod and the second electromagnetic rod will fall on the corresponding conveyor belt 1 and finally be collected at the tail.

[0021] Under the control of the controller 14, part of the electromagnet 121 that moves to the lower side of the conveyor belt 1 is powered off, and is powered on again when it moves to the upper side of the conveyor belt 1. This allows the iron filings originally adsorbed on the conveyor belt 1 to fall off, thereby increasing the adsorption effect. A thin iron wire 111 is inserted into the outer layer 11 to act as a magnetic conductor, thereby increasing the adsorption force.

[0022] Some of the iron filings stuck on the surface of the conveyor belt 1 can be removed by the scraper 7, thereby ensuring the conveyor belt 1 has the effect of absorbing the iron filings.

[0023] When a stage of work is completed, the first and second electromagnetic rods are powered off and iron filings are cleaned. Often, some iron filings cannot fall off by their own gravity. Under the action of the first and second dust removal air nozzles 81 and 82, they can be blown off, thereby achieving a better cleaning effect.

Claims

1. A ball mill return belt iron removal device, Features: It comprises a plurality of short-distance conveyor belts arranged horizontally and running forward and backward, all of which are arranged at intervals in the forward and backward direction to form a conveying assembly running forward and backward, a dust cover matching the conveying assembly is provided on the upper side of the conveying assembly, a sealing strip matching the conveying assembly is provided at the lower end of the dust cover, a vertically arranged feeding channel is provided on the upper side of the front end of the dust cover, the feeding channel is directly opposite to the front part of the short-distance conveyor belt located at the frontmost side, a plurality of rows of first electromagnetic bars spaced up and down and arranged horizontally are provided in the feeding channel to form a first electromagnetic bar group, any two adjacent rows of first electromagnetic bars in the first electromagnetic bar group are arranged alternately to cover the entire feeding channel, a material discharge channel is provided at the rear end of the short-distance conveyor belt located at the rearmost side of the dust cover corresponding to the rear end of the short-distance conveyor belt, a material receiving trough is provided at the lower side of the material discharge channel, an air nozzle with an opening arranged upward is provided in the gap between any two adjacent short-distance conveyor belts, the air nozzle is tilted backward, a plurality of second electromagnetic bars running left and right are provided on the path corresponding to each air nozzle in the dust cover to form a second electromagnetic bar group, and a plurality of second electromagnetic bars in each second electromagnetic bar group are arranged in a triangular shape; The belt body of the conveyor belt includes an outer layer in contact with the material, a middle layer, and an inner layer connected to the power wheel, which are connected in sequence along the thickness direction. The inner side of the inner layer is provided with a ruler edge that cooperates with the power wheel. The middle layer is a plurality of electromagnets arranged continuously along the length direction of the conveyor belt. A controller for controlling the electromagnet is provided inside each short-distance conveyor belt. Each electromagnet is electrically connected to the controller through a separate connecting line. The outer layer is made of non-slip rubber material, and a plurality of thin iron wires are inserted into the outer layer. A scraper matched with the conveyor belt is arranged at the lower side of each short-distance conveyor belt, and an iron chip groove is correspondingly arranged at the lower side of the scraper.

2. A ball mill return belt iron removal device according to claim 1, Features: A plurality of first dust removal air nozzles facing the first electromagnetic rod group are arranged at the position of the feed channel corresponding to the first electromagnetic rod group, and a plurality of second dust removal air nozzles facing the second electromagnetic rod group are arranged at the position of the dust cover corresponding to each second electromagnetic rod group.

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