WO2019237834A1

WO2019237834A1 - Ceramic powder extrusion granulating device

Info

Publication number: WO2019237834A1
Application number: PCT/CN2019/084000
Authority: WO
Inventors: 李金华
Original assignee: 佛山市蓝之鲸科技有限公司
Priority date: 2018-06-13
Filing date: 2019-04-24
Publication date: 2019-12-19
Also published as: CN108673730A

Abstract

Disclosed is a ceramic powder extrusion granulating device including an extrusion mechanism (1) and a crushing mechanism (2). The extrusion mechanism (1) includes an extrusion compartment (11) and an extrusion roller set disposed in the extrusion compartment (11). The extrusion roller set includes two extrusion rollers disposed in parallel and rotating in opposite directions. An extrusion chamber (122) extrudes the fine powder conveyed to the surfaces of the two extrusion rollers (12) to form a bulk material with an appropriate hardness. The crushing mechanism (2) includes a crushing box (21), an arc-shaped abrasion screen mesh (23) disposed at the bottom of the crushing box (21), and at least one set of crushing assemblies (22) disposed in the crushing box (21). A blade (222) and a crushing hammer (223) are rotated circumferentially along a crushing shaft (221) to impact against and crush the bulk material fed into the crushing box (21). By means of the crushing hammer (223), the particles formed from the impacting and crushing are extruded to a predetermined abrasion gap (231) between the crushing hammer (223) and the arc-shaped abrasion screen mesh (23), such that the particles formed from the collision and crushing are abraded against the arc-shaped abrasion screen mesh (23) and granulated. The granulating device can effectively recover a tail powder, the particle size of the obtained granule powder meets production requirements, and the recovery cost is low.

Description

Ceramic powder extrusion granulation device

Technical field

The invention relates to the technical field of ceramic production equipment, in particular to a ceramic powder extrusion granulation device.

Background technique

In the current ceramics industry, it is always difficult to break through the recycling of residual powder during the production process, because in the existing spray tower bag dust collectors, workshop environmental dust collectors, press workshops, kiln mills and other equipment places Residual tailing powder will be produced in the process, and the particle size of these tailing powders is different. It cannot be directly recycled in production. Too large or too small powder will have a bad impact on product quality. The material is recycled through the traditional method, through a series of traditional processes such as paddle-drying-granulation. This method has high recycling costs, and manufacturers often choose to directly discard the tailing powder. Therefore, how to achieve low cost to recycle the tail powder and ensure that the particle size can meet the production requirements, is a technical problem urgently needed to be solved by today's enterprise personnel.

Summary of the Invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a ceramic powder extrusion granulation device suitable for recycling tail powder materials with different particle sizes.

In order to achieve the above-mentioned object, a ceramic powder extrusion granulation device provided by the present invention includes an extrusion mechanism and a crushing mechanism, and the extrusion mechanism includes an extrusion chamber and an extrusion provided in the extrusion chamber. A roller group, wherein the squeeze roller group includes two parallel and oppositely rotating squeeze rollers, and each of the squeeze rollers is formed with a plurality of strips arranged in a ring shape and extending along the axial direction of the squeeze rollers. Squeeze grooves, two of the squeeze grooves on the roll surface of the squeeze rollers are in one-to-one correspondence to rotate with the two squeeze rollers facing each other to form a squeeze cavity at the tangent of the roll surface. The fine powder material at the surfaces of the two squeeze rolls forms a block material with appropriate hardness; the crushing mechanism includes a crushing box, an arc-shaped friction screen provided at the bottom of the crushing box, and at least one group provided in the crushing box. A crushing component, wherein each group of the crushing component includes a plurality of crushing shafts and a plurality of pulp leaves connected in a ring shape to the crushing shaft, and a crushing hammer is provided at an end of each of the pulp leaves; And the crushing hammer rotate with the crushing shaft to feed the block material into the crushing box. Collision crushing, and the crushing hammer is used to crush the particles formed by the impact crushing into the friction gap reserved between the crushing hammer and the arc friction screen, so that the particles formed by the crash crushing and the arc friction screen friction grain.

Further, the crushing shaft is provided with a crushing drive unit that drives the rotation of the crushing shaft.

Further, the extrusion silo and the crushing box are arranged up and down, wherein the discharge port of the extrusion silo is in communication with the feeding port of the crushing box so that the extruded block material falls into the crushing box.

Further, a falling hopper is further arranged above the extrusion silo, and the upper port of the falling silo is used as the feeding port of the extrusion silo and the lower port of the falling silo faces the tangent of the two extrusion rolls.

Further, a collecting hopper is arranged below the crushing box, wherein the collecting hopper is in the shape of a funnel to facilitate the centralized collection of the granular powder discharged through the curved friction screen.

The present invention adopts the above-mentioned solution, which has the beneficial effect that by feeding tail powder materials with different particle diameters into an extrusion mechanism, extrusion is performed to form a block material, and then the block material is sent to a crushing mechanism to sequentially undergo collision crushing and friction. Crushing to obtain granular powder that meets the particle size requirements; through the above scheme, the tail powder can be effectively recovered and the particle size of the obtained granular powder meets the production requirements, and the recycling cost is low.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an extrusion granulation device of the present invention.

FIG. 2 is a schematic structural diagram of a pressing mechanism of the present invention.

FIG. 3 is an exploded schematic view of a squeezing mechanism of the present invention.

Fig. 4 is a sectional view of a pressing mechanism of the present invention.

Fig. 5 is a sectional view of a pressing mechanism of the present invention.

FIG. 6 is a schematic structural diagram of part I in FIG. 5.

FIG. 7 is a schematic structural diagram of a crushing mechanism of the present invention.

FIG. 8 is an exploded view of the crushing mechanism of the present invention.

FIG. 9 is a schematic structural diagram of a crushing component of the present invention.

Fig. 10 is a sectional view of a crushing mechanism of the present invention.

FIG. 11 is a schematic structural diagram of a part P in FIG. 10.

Among them, 1-extrusion mechanism, 11-extrusion bin, 12-extrusion roller, 121-extrusion groove, 122-extrusion cavity, 123-drive gear, 13-falling hopper, 14-spring assembly, 141-fixation Seat, 142-spring mount, 143-spring shaft, 144-compression spring, 145-adjusting nut, 101- squeeze motor, 102-reducer, 103-coupling, 2-crushing mechanism, 21-crushing box, 22-crushing components, 221-crushing shafts, 222-paddles, 223-crushing hammers, 23-arc friction screens, 231-friction gaps, 24-collecting hoppers, 25-crushing drive units, 4-storage tanks.

detailed description

The present invention is further described below with reference to specific embodiments.

Referring to FIG. 1, in this embodiment, a ceramic powder extrusion granulation device includes an extrusion mechanism 1 and a crushing mechanism 2. The extrusion mechanism 1 and the crushing mechanism 2 of this embodiment are installed vertically. On a preset rack.

Referring to FIGS. 2 to 6, in this embodiment, the squeezing mechanism 1 includes a squeezing bin 11 and a squeezing roller group disposed in the squeezing bin 11, wherein the squeezing roller group includes two In order to further understand the two squeeze rollers 12, the squeeze rollers 12 rotating in parallel and opposite to each other are fixedly installed in the squeeze bin 11 at both ends by preset bearing seats. The two squeeze rollers 12 are also provided with a squeeze drive unit for the two to rotate toward each other. The squeeze drive unit of this embodiment is composed of a squeeze motor 101, a reducer 102, and a coupling 103 in this order (in the technical field) (The motor, reducer and coupling are all conventional electrical components, and the principle is not described in the application.), The output of the squeeze motor 101 and the input of the reducer 102 are driven by a transmission belt, and the output of the reducer 102 and the Coupling 103 is driven in phase. Coupling 103 is drivingly connected to one end of one of the squeeze rollers 12. Both ends of the same side of the two squeeze rollers 12 are provided with a meshing transmission gear 123, so that The pressure motor 101 drives a squeeze roller 12 to rotate through the reducer 102 and the coupling 103 , And with two drive transmission gear of the other squeeze roller 123 is rotated 12, 12 rotate in opposite directions and ultimately the operation of two squeezing rollers. A plurality of pressing grooves 121 arranged in a ring shape and extending along the axial direction of the pressing roller 12 are formed on the pressing surface of each pressing roller 12; the pressing grooves 121 on the pressing surface of the two pressing rollers 12 correspond one by one. The two pressing rollers 12 rotate toward each other to form a pressing cavity 122 at the tangent of the roller surfaces. A drop hopper 13 is provided above the squeeze bin 11 in this embodiment. The drop hopper 13 has a funnel shape. The upper port of the drop hopper 13 is used as the feeding port of the squeeze bin 11 and the lower port of the drop hopper 13 faces the two rollers. Cut, so that the pre-collected tailing powder (the collected tailing powder may have different particle sizes) is transported from the falling hopper 13 to the surface of the two squeeze rollers 12 and the tailing powder will be collected. Fill the squeeze groove 121, and as the two squeeze rolls 12 rotate toward each other, a squeeze cavity 122 is formed at the tangent of the roll surface to realize the extrusion molding of the tail powder, and then a block consistent with the shape of the squeeze cavity 122 is obtained. Shaped material and block material are discharged with the rotation of the two squeeze rollers 12. Secondly, in order to further ensure that the surfaces of the two squeeze rollers can be closely fitted, a spring assembly 14 disposed on the squeeze bin 11 and arranged in a lateral direction is further included. The spring assembly 14 is connected to the squeeze bin 11 by screws. The fixing base 141, the spring mounting base 142, the spring shaft 143, the compression spring 144 provided in the inner cavity of the spring mounting base 142, and the adjusting nut 145 provided on the fixing base 141. One end of the spring mounting base 142 and one of the squeeze rollers The 12-end bearing seat is connected. One end of the spring shaft 143 is slidably extended to the inner cavity of the spring mounting seat 142 and the other end is threadedly connected to the adjusting nut 145. The two ends of the compression spring 144 are respectively connected to the spring shaft 143 and the spring mounting seat 142. The bottom surfaces are in conflict, that is, by manually turning the adjusting nut 145 to move the spring shaft 143 laterally, thereby changing the pressing force of the spring shaft 143 on the compression spring 144, so that the rebound force of the compression spring 144 on the spring mounting seat 142 will follow The change further changes the lateral top pressure on the squeeze rolls 12. According to the actual situation, the spring component 14 is used to finely adjust the gap between the roll faces of the two squeeze rolls 12 and the pressure between the roll faces.

Referring to FIGS. 7 to 11, in this embodiment, the crushing mechanism 2 includes a crushing box 21, an arc-shaped friction screen 23 provided at the bottom of the crushing box 21, and two sets of crushing provided in the crushing box 21. Component 22, wherein each group of crushing components 22 includes a plurality of crushing shafts 221 and a plurality of slurry blades 222 that are annularly connected to the crushing shaft 221. The slurry blades 222 of the present embodiment pass through a mounting shaft sleeved on the crushing shaft 221. The sleeves are connected and fixed to install the shaft sleeve and the paddle 222 by screws, so that the paddle 222 and the crushing shaft 221 are connected. Secondly, a crushing hammer 223 is provided at the end of each paddle 222. The crushing hammer 223 in this embodiment is in a long shape, and is connected and fixed to the end of the paddle 222 by screws. In this embodiment, the two sets of crushing components 22 share the same crushing axis 221 and the two sets of crushing components 22 are arranged side by side along the axis of the crushing axis 221. The respective blades 222 of the two sets of crushing components 22 are arranged offset from each other. The crushing shaft 221 of this embodiment is provided with a crushing drive unit 25 that drives its rotation. The crushing drive unit 25 of this embodiment is a reduction motor. The output end of the crushing drive unit 25 is connected to the end of the crushing shaft 221 to pass the crushing. The driving unit 25 drives the crushing shaft 221 to rotate, that is, the crushing shaft 221 synchronously drives the two groups of crushing components 22 to rotate, which substantially drives the blade 222 and the crushing hammer 223.

In this embodiment, the outlet of the extrusion bin 11 is in communication with the inlet of the crushing box 21, so that the extruded block material falls into the crushing box 21 for crushing and pelletizing treatment. In the crushing box 21, the block material will be impacted by the crushing hammer 223 and the paddle 222 during the falling process, so the rotating moment of the crushing hammer 223 and the paddle 222 is used to collide and crush the block material, so that the block material Crushing to form large particles with large particle size. At the same time, the continuous circumferential rotation of multiple crushing hammers 223 will continuously collide with the large particles sinking at the bottom of the crushing box 21, thereby driving the large particles to circulate and spray in the crushing box 21 In the crushing box 21, the large particles gradually collided and crushed into particles with a small particle size. Secondly, due to the limitations of collision crushing, after a certain collision, the small-sized particles were more difficult to collide into smaller particles. Powder particles (for example, it is more difficult to crash and break into sub-nano-level powder particles), for this reason, a friction gap 231 is reserved between each crushing hammer 223 and the friction screen, so as to rotate with the crushing hammer 223 To the corresponding position above the arc-shaped friction screen 23, the rotating action of the crushing hammer 223 is used to squeeze the small-sized particles that are difficult to collide and crush into the friction gap 231, so as to be squeezed into the friction gap 231 At this time, the particles will move with the crushing hammer 223 and friction with the curved friction screen 23 There are a plurality of densely arranged meshes on the surface of the curved friction screen 23, so that the There will be large friction between the particles and the curved friction screen 23, so that the particles will be broken into particles of ultra-small particle size, and the curved friction screen 23 will be used to pass the particles that meet the requirements of the particle size. The mesh of the arc friction screen 23 (essentially, the particle size of the particle powder obtained by friction granulation is smaller than the mesh hole diameter, the particle size requirement is met, and the particle powder is discharged out of the crushing box 21 through the mesh).

Further, the size of the friction gap 231 is determined by actual production conditions, so that the friction gap 231 is at an appropriate size, and an appropriate size selection is made according to the actual required particle size requirements and material characteristics, that is, when the friction gap 231 is large, The particle size of the granulated powder obtained by friction granulation is large. When the friction gap is 231 hours, the particle size of the granulated powder obtained by friction granulation is small. In actual production, in order to ensure the crushing efficiency, the friction gap 231 is difficult to pass. It only needs to be slightly larger than the required particle size. In addition, in order to further enhance the effect of friction crushing, a certain inclined angle can be formed between the crushing hammer 223 and the curved friction screen 23 to make the friction gap 231 appear. Slanted for better friction crushing.

In this embodiment, in order to facilitate the centralized collection of the granular powder discharged from the crushing box 21, a collecting hopper 24 is provided below the crushing box 21, wherein the collecting hopper 24 is funnel-shaped so as to facilitate centralized collection through the curved friction screen The granular powder discharged from the net 23 can be received and conveyed by the conveyor belt under the collecting hopper 24 to the downstream station for production preparation.

Further, the tail powder of this embodiment can be stored in a preset storage tank 4 and can be conveyed to the falling hopper 13 through a conveyor belt.

The embodiments described above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person skilled in the art can make more possible changes and modifications to the technical solution of the present invention, or modifications without departing from the scope of the technical solution of the present invention, as equivalent embodiments of the present invention. Therefore, any equivalent changes made according to the idea of the present invention without departing from the content of the technical solution of the present invention shall be covered by the protection scope of the present invention.

Claims

A ceramic powder extrusion granulation device includes an extrusion mechanism (1) and a crushing mechanism (2), which is characterized in that the extrusion mechanism (1) includes an extrusion silo (11) and an extruder provided in the extrusion. The squeezing roller group in the bin (11), wherein the squeezing roller group includes two squeezing rollers (12) rotating in parallel and facing each other, and each of the squeezing rollers (12) is formed with a roller surface A plurality of pressing grooves (121) arranged in a ring shape and extending along the axial direction of the pressing roller (12). The two pressing grooves (121) on the roller surface of the two pressing rollers (12) correspond to each other one by one. The pressing rollers (12) rotate towards each other to form a pressing cavity (122) at the tangent of the roller surfaces, and the pressing powder (122) is used to squeeze and convey the fine powder at the roller surfaces of the two pressing rollers (12). Forming a block material with appropriate hardness; the crushing mechanism (2) includes a crushing box (21), an arc-shaped friction screen (23) provided at the bottom of the crushing box (21), and a crushing box (21) provided in the crushing box (21) At least one set of crushing components (22), wherein each set of crushing components (22) includes a plurality of crushing shafts (221) and a plurality of paddles (222) connected in a ring shape to the crushing shafts (221), each A breaking hammer (223) is provided at each end of the paddle (222); The leaf (222) and the crushing hammer (223) rotate with the crushing shaft (221) to crush the block material sent into the crushing box (21), and use the crushing hammer (223) to crush the particles formed by the collision. In the friction gap (231) reserved between the crushing hammer (223) and the arc friction screen (23), the particles formed by collision crushing and the arc friction screen (23) are friction granulated.
The ceramic powder extrusion granulation device according to claim 1, characterized in that: the crushing shaft (221) is provided with a crushing drive unit (25) that drives its rotation.
The ceramic powder extrusion granulation device according to claim 1, characterized in that the extrusion silo (11) and the crushing box (21) are arranged up and down, wherein the extrusion silo (11) The discharge port of the pier is in communication with the feeding port of the crushing box (21) so that the extruded block material falls into the crushing box (21).
The device for extruding and granulating ceramic powder according to claim 1, characterized in that: a falling hopper (13) is further provided above the extrusion silo (11), and the upper port of the falling hopper (13) serves as The feeding port of the squeezing silo (11) and the lower port of the falling hopper (13) face the tangent position of the roll surfaces of the two squeezing rolls (12).
The ceramic powder extrusion granulation device according to claim 1, characterized in that a collecting hopper (24) is provided below the crushing box (21), wherein the collecting hopper (24) is funnel-shaped In order to facilitate the centralized collection of the granular powder discharged through the curved friction screen (23).