A pulverizer pulverizing device for sulfuric acid method titanium dioxide production

Abstract

The utility model discloses a kind of pulverizer grinding devices for sulphuric acid method titanium dioxide production, belong to pulverizer equipment technical field, including pulverizing cylinder, with the feeding chute of pulverizing cylinder internal communication, the pulverizing cutter group that is rotatably installed in the pulverizing cylinder inside by shaft coupling;Pulverizing cutter group includes the pulverizing shaft that is vertically arranged;Multiple axial linear array distribution's mounting disc is fixed on the pulverizing shaft, multiple circumferential array distribution's blade is inserted in the edge of each mounting disc;The top of pulverizing shaft is fixed with multiple circumferential array distribution and with the screw rod that the blade position upper and lower correspond, the shaft of each screw rod is equipped with the lock that all blades and mounting disc on the same vertical plane are simultaneously inserted fixed, the shaft of each screw rod is also equipped with the nut that lock is positioned. By installing and disassembling to a set of lock, the installation and disassembly of all blades on the same vertical plane can be realized, without disassembling blade one by one when disassembling, and its dismounting operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of pulverizer equipment, specifically a pulverizer device for the production of titanium dioxide using the sulfuric acid process. Background Technology

[0002] The sulfuric acid process for titanium dioxide production mainly consists of five core stages: titanium ore preparation, acid hydrolysis, hydrolysis, calcination, and post-treatment. Specifically: Titanium ore preparation: Ilmenite is crushed and ground to a particle size ≤0.15mm to remove magnetic impurities; Acid hydrolysis reaction: Titanium ore powder reacts with concentrated sulfuric acid (92%-98%) at high temperature (120-180℃) to generate titanium oxysulfate solution; Sedimentation and filtration: Impurities are separated from the acid hydrolysis solution in a sedimentation tank, and unreacted slag is removed by a plate and frame filter press; Hydrolysis reaction: Titanium oxysulfate is hydrolyzed to generate metatitanic acid slurry, requiring temperature control (90℃) and seed crystal addition; Calcination: Metatitanic acid is calcined at high temperature (800-1000℃) in a rotary kiln to convert it into primary titanium dioxide; Post-treatment includes crushing, grading, surface coating (inorganic / organic treatment), and packaging.

[0003] In the post-processing stage, the crushing process mainly relies on a crusher to crush the raw titanium dioxide into powder. Currently, the crushing blade assembly in existing crushers usually consists of multiple blades, each mainly fixed by bolts. Disassembly of these blades generally presents the following problems: replacing worn blades requires disassembling each bolt individually, which is cumbersome and time-consuming. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pulverizing device for the production of titanium dioxide using the sulfuric acid process, which has a fast blade disassembly and assembly speed, making maintenance more convenient and efficient, and solving the problem of difficult replacement of existing blade sets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A pulverizing device for producing titanium dioxide using the sulfuric acid process includes a vertically arranged pulverizing cylinder, a feed chute installed on the outer wall of the pulverizing cylinder and communicating with the interior of the pulverizing cylinder, and a pulverizing blade assembly rotatably installed inside the pulverizing cylinder via a coupling. Its core improvement lies in the following: the shredder assembly includes a vertically arranged shredder shaft; multiple axially linearly arrayed mounting discs are fixed on the shredder shaft, and multiple circumferentially arrayed blades are inserted into the edge of each mounting disc; multiple circumferentially arrayed screws corresponding vertically to the blade positions are fixed on the top of the shredder shaft, and each screw is fitted with a locking device that simultaneously inserts and fixes all blades and mounting discs on the same vertical plane, and each screw is also fitted with a nut to lock the locking device in place.

[0006] By adopting the above solution, the installation and removal of all blades on the same vertical plane can be achieved by installing and removing a set of locks. During removal, it is not necessary to remove the blades one by one, making the installation and removal operation more convenient and efficient.

[0007] As a preferred embodiment of the pulverizing device for a pulverizer used in the production of titanium dioxide using the sulfuric acid process, the inner side of the blade is provided with a slot, and a limiting post is vertically fixed inside the slot. The limiting post is inserted into a clearance groove opened from the edge of the mounting plate to the center of the mounting plate, which can realize the pre-positioning of the blade and ensure that the installation angle is consistent, that is, the positions of all blades on the same vertical plane are corresponding vertically, thereby facilitating the subsequent installation of the locking mechanism.

[0008] In a preferred embodiment of a pulverizing device for a sulfuric acid process titanium dioxide production mill, the locking mechanism includes a locking sleeve at the top and a locking cylinder vertically connected to the bottom of the locking sleeve. The locking sleeve is an n-shaped sleeve, which is fitted onto the shaft of the screw from top to bottom to facilitate positioning of the locking cylinder. There are two locking cylinders, which are parallel to each other. The blade has a insertion hole for use with the locking cylinder, which is coaxially opened in the limiting post. After the locking cylinder is inserted into the insertion hole, it can lock the blade and the mounting plate.

[0009] In a preferred embodiment of a pulverizing device for producing titanium dioxide using the sulfuric acid process, a uniform feeding cylinder is connected to the top of the feed chute and is arranged horizontally thereto. The top of the uniform feeding cylinder has a feed inlet. A cross-shaped uniform feeding plate is coaxially rotatably installed inside the uniform feeding cylinder. A uniform feeding motor that drives the cross-shaped uniform feeding plate to rotate is installed outside the uniform feeding cylinder. The rotating cross-shaped uniform feeding plate can uniformly feed the titanium dioxide raw material entering the pulverizing cylinder, thereby avoiding local overload.

[0010] In a preferred embodiment of a pulverizing device for the production of titanium dioxide using the sulfuric acid process, a maintenance door that can be opened or closed is installed on the front side of the pulverizing cylinder. The door is connected by a hinge, which facilitates the inspection, cleaning, or adjustment of the internal blades.

[0011] The beneficial effects of this utility model are: 1. Quick tool change: All blades on the same vertical plane can be installed and removed through a set of locking mechanisms. There is no need to remove the blades one by one during disassembly, making the disassembly and assembly operations more convenient and efficient. 2. Stable installation: The pre-positioning of the limit post and slot, and the locking of the lock cylinder and the insertion hole, can effectively prevent the blade from loosening during crushing; 3. Uniform feeding: The cross-shaped material feeding plate inside the material feeding cylinder ensures uniform feeding, thereby improving the consistency of crushing efficiency; 4. Easy maintenance: The access door design facilitates daily maintenance and reduces downtime. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 Three-dimensional structure of a pulverizing device for the production of titanium dioxide using the sulfuric acid process. Figure 1 ; Figure 2 Three-dimensional structure of a pulverizing device for the production of titanium dioxide using the sulfuric acid process. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the pulverizing device used in the sulfuric acid process for titanium dioxide production. Figure 4 This is a three-dimensional structural diagram of the shredder assembly; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 A three-dimensional structural diagram of a single mounting plate and blade assembly; Figure 7 To showcase Figure 6 A three-dimensional diagram of the internal structure.

[0014] Reference numerals in the attached drawings: 1-Crushing cylinder; 2-Feed chute; 3-Coupling; 4-Inspection door; 5-Equalizing cylinder; 6-Inlet; 7-Cross equalizing plate; 8-Equalizing motor; 9-Crushing shaft; 10-Mounting plate; 11-Blade; 12-Screw; 13-Locking sleeve; 14-Locking core; 15-Nut; 16-Socket; 17-Slot; 18-Limiting post; 19-Allowing groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1 to 3 As shown, a pulverizing device for the production of titanium dioxide using the sulfuric acid process is used in a pulverizer. Specifically, it includes a vertically arranged pulverizing cylinder 1 (open at the top and closed at the top), a feed chute 2 installed on the outer wall of the pulverizing cylinder 1 and communicating with the inside of the pulverizing cylinder 1, and a pulverizing blade assembly rotatably installed inside the pulverizing cylinder 1 via a coupling 3.

[0017] like Figure 1 As shown, a maintenance door 4 that can be opened or closed is installed on the front side of the crushing cylinder 1. It is connected by a hinge to facilitate the inspection, cleaning or adjustment of the internal blades 11.

[0018] like Figures 1 to 3 As shown, a uniform feeding cylinder 5 is welded to the top of the feeding chute 2 and is arranged horizontally thereto. The top of the uniform feeding cylinder 5 is provided with a feeding port 6. A cross uniform feeding plate 7 is coaxially rotatably installed inside the uniform feeding cylinder 5. A uniform feeding motor 8 is installed outside the uniform feeding cylinder 5 to drive the cross uniform feeding plate 7 to rotate. The rotating cross uniform feeding plate 7 can uniformly feed the titanium dioxide primary product entering the crushing cylinder 1, thereby avoiding local overload.

[0019] like Figures 4 to 7 As shown, the shredder assembly includes a vertically arranged shredder shaft 9; 11 axially linearly arrayed mounting discs 10 are welded and fixed on the shredder shaft 9, and 5 circumferentially arrayed blades 11 are inserted into the edge of each mounting disc 10; 5 circumferentially arrayed screws 12, corresponding vertically to the blades 11, are welded and fixed to the top of the shredder shaft 9, and each screw 12 is fitted with a locking device that simultaneously inserts and fixes all blades 11 and mounting discs 10 on the same vertical plane, and each screw 12 is also fitted with a nut 15 to lock the locking device; the installation and removal of all blades 11 on the same vertical plane can be achieved through a set of locking devices, and it is not necessary to remove the blades 11 one by one during removal, making the installation and removal operation more convenient and efficient.

[0020] like Figure 5 As shown, the mortise lock includes a lock sleeve 13 located at the top and a lock cylinder 14 vertically connected to the bottom of the lock sleeve 13; wherein, the lock sleeve 13 is an n-shaped sleeve, and the lock sleeve 13 is fitted onto the rod body of the screw 12 from top to bottom, which facilitates the positioning of the lock cylinder 14; wherein, there are two lock cylinders 14, and the two lock cylinders 14 are parallel to each other; the blade 11 has a mortise hole 16 for use with the lock cylinder 14, and the mortise hole 16 is coaxially opened in the limiting post 18. After the lock cylinder 14 is inserted into the mortise hole 16, the blade 11 and the mounting plate 10 can be locked.

[0021] like Figures 6 to 7 As shown, the inner side of the blade 11 is provided with a slot 17, and a limiting post 18 is vertically welded and fixed inside the slot 17. The limiting post 18 is inserted into the clearance groove 19 opened from the edge of the mounting plate 10 to the center of the mounting plate 10, which can realize the pre-positioning of the blade 11 and ensure that the installation angle is consistent. That is, the positions of all blades 11 on the same vertical plane are corresponding vertically, which facilitates the subsequent installation of the lock.

[0022] Working principle: Feeding and homogenization: The initial titanium dioxide product is poured into the feed port 6 of the homogenizing cylinder 5. The homogenizing motor 8 drives the cross homogenizing plate 7 to rotate, so that the material is evenly dispersed into the feed slide 2 and then enters the crushing cylinder 1, avoiding the decrease in crushing efficiency caused by the concentration of large particles.

[0023] Crushing process: An external motor drives the crushing shaft 9 to rotate at high speed through the coupling 3, which in turn drives the mounting plate 10 and the blades 11 to rotate, crushing the titanium dioxide raw material into fine powder. After crushing, the fine powder is extracted from the top of the crushing cylinder 1 under strong negative pressure by the suction discharge device located above the crushing device.

[0024] Blade replacement (core advantage): When the blade 11 is worn: loosen the nut 15 at the top of the screw 12; lift the mortise lock (lock sleeve 13 + lock cylinder 14) upwards to release the lock on the blade 11 and the mounting plate 10; remove the old blade 11 and pre-position the new blade 11 in the clearance groove 19 of the mounting plate 10 through the slot 17 and the limiting post 18; put the mortise lock in, tighten the nut 15, and the blade 11 can be firmly locked through the lock cylinder 14.

[0025] Maintenance: Open the inspection door 4 on the front of the crushing cylinder 1 to directly check the operating status of the crushing shaft 9 and the mounting plate 10, or clean the residue on the blades 11.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pulverizing device for producing titanium dioxide using the sulfuric acid process, comprising a vertically arranged pulverizing cylinder, a feed chute installed on the outer wall of the pulverizing cylinder and communicating with the interior of the pulverizing cylinder, and a pulverizing blade assembly rotatably installed inside the pulverizing cylinder via a coupling; Its features are: The shredder assembly includes a vertically arranged shredder shaft; multiple axially linearly arrayed mounting discs are fixed on the shredder shaft, and multiple circumferentially arrayed blades are inserted into the edge of each mounting disc; multiple circumferentially arrayed screws corresponding vertically to the blade positions are fixed on the top of the shredder shaft, and each screw is fitted with a locking device that simultaneously inserts and fixes all blades and mounting discs on the same vertical plane, and each screw is also fitted with a nut to lock the locking device in place.

2. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 1, characterized in that: The blade has a slot on its inner side, and a limiting post is vertically fixed inside the slot. The limiting post is inserted into a clearance groove opened from the edge of the mounting plate to the center of the mounting plate.

3. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 2, characterized in that: The mortise lock includes a lock sleeve at the top and a lock cylinder vertically connected to the bottom of the lock sleeve.

4. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 3, characterized in that: The locking sleeve is an n-shaped sleeve, and the locking sleeve is fitted onto the shaft of the screw from top to bottom.

5. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 3, characterized in that: The lock cylinder consists of two cylinders, which are parallel to each other; the blade has a socket for use with the lock cylinder.

6. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 5, characterized in that: The insertion hole is coaxially formed inside the limiting post.

7. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 1, characterized in that: The top of the feeding chute is connected to a horizontally arranged uniform material cylinder. The top of the uniform material cylinder has a feeding port. A cross-shaped uniform material plate is coaxially rotatably installed inside the uniform material cylinder. A uniform material motor that drives the cross-shaped uniform material plate to rotate is installed outside the uniform material cylinder.

8. The pulverizing device for sulfuric acid process titanium dioxide production according to claim 1, characterized in that: The front side of the crushing cylinder is equipped with an inspection door that can be opened or closed.

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