Vertical crusher for producing titanium dioxide by sulfuric acid method

Abstract

The invention discloses a vertical crusher for producing titanium dioxide by a sulfuric acid method, which belongs to the technical field of crusher equipment and comprises a positioning barrel, a driving device, a crushing device and a suction discharging device. The crushing device comprises a crushing cylinder, a feeding slide way and a crushing cutter group; the crushing cutter group comprises a vertically arranged crushing rotating shaft; a plurality of mounting discs which are axially distributed in a linear array are fixed on the crushing rotating shaft, and a plurality of blades are inserted into the edge of each mounting disc; a plurality of positioning screw rods which are distributed in a circumferential array mode and correspond to the positions of the blades up and down are fixed to the top of the smashing rotating shaft, the rod body of each positioning screw rod is sleeved with a mortise lock which enables all the blades and the installation disc on the same vertical face to be inserted and fixed at the same time, and a second nut which enables the corresponding mortise lock to be positioned is further assembled on the rod body of each positioning screw rod. By mounting and dismounting a set of mortise locks, all the blades on the same vertical plane can be mounted and dismounted, the blades do not need to be dismounted one by one during dismounting, the dismounting operation is more convenient, and the dismounting efficiency is higher.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pulverizer equipment, and particularly relates to a vertical pulverizer for sulfuric acid method titanium dioxide production. BACKGROUND

[0002] Sulfuric acid method titanium dioxide production mainly includes five core stages of titanium ore processing, acidolysis, hydrolysis, calcination and post-treatment. Among them, the titanium ore preparation includes crushing and grinding ilmenite to a particle size of less than or equal to 0.15 mm and removing magnetic impurities; the acidolysis reaction includes reacting ilmenite powder with concentrated sulfuric acid (92%-98%) at high temperature (120-180 DEG C) to generate titanyl sulfate solution; the sedimentation and filtration include separating impurities in the acidolysis solution through a sedimentation tank and removing unreacted ore slag through a plate and frame filter press; the hydrolysis reaction includes hydrolyzing titanyl sulfate to generate metatitanic acid slurry, and the temperature (90 DEG C) and seed addition need to be controlled; the calcination includes calcining metatitanic acid at high temperature (800-1000 DEG C) in a rotary kiln to convert it into titanium dioxide primary product; and the post-treatment includes crushing, grading, surface coating (inorganic / organic treatment) and packaging.

[0003] In the crushing process in the post-treatment stage, the primary product of titanium dioxide is mainly crushed to powder by a pulverizer. The existing pulverizer has the following problems: The crushing blade set in the existing pulverizer is usually composed of multiple blades, and each blade is mainly fixed by bolts. When replacing the worn blades, the bolts need to be disassembled one by one, which is tedious and time-consuming. The existing pulverizer usually has a discharge device arranged at the bottom of the cylinder and relies on gravity for natural discharge. However, in the crushing process, the high-speed rotating crushing medium (such as hammer head and grinding ball) can lift the powder to the upper part of the cylinder, causing the upper powder to accumulate in the cylinder space and resulting in delayed discharge, reduced crushing efficiency, even causing equipment blockage and affecting production continuity. The existing pulverizer usually has a drive device driven by a belt wheel and a belt. In order to ensure the tension of the belt, the belt wheel is always in contact with the belt. However, the existence of the tension wheel can aggravate the bidirectional wear between the belt and the tension wheel, which shortens the service life of the belt (frequent replacement is required) and increases the maintenance frequency of the tension wheel, resulting in an increase in the comprehensive maintenance cost in the later period. SUMMARY

[0004] The first technical problem to be solved by the application is to provide a vertical pulverizer for sulfuric acid method titanium dioxide production, which has fast blade disassembly and assembly speed, is more convenient and efficient during maintenance, and solves the problem of difficult replacement of the existing blade set.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical solutions: The utility model provides a vertical pulverizer for titanium dioxide production of sulfuric acid method, including the vertical setting location cylinder, the drive arrangement of installing in one side of location cylinder, the pulverizing device of coaxial butt joint in location cylinder top but not with location cylinder intercommunication, the suction discharge device of coaxial butt joint in pulverizing device top and with pulverizing device intercommunication, wherein, drive arrangement drives the pulverizing device work through location cylinder, Its core improvement point lies in: the pulverizing device includes a vertically arranged pulverizing cylinder, a feed chute mounted on the outer wall of the pulverizing cylinder and in communication with the interior of the pulverizing cylinder, and a pulverizing cutter group rotatably mounted in the interior of the pulverizing cylinder through a shaft coupling. The pulverizing cutter group includes a vertically arranged pulverizing shaft. A plurality of axially linearly arranged mounting discs are fixed on the pulverizing shaft. A plurality of circumferentially arranged blades are inserted into the edges of each mounting disc. A plurality of circumferentially arranged positioning screws corresponding to the positions of the blades are fixed on the top of the pulverizing shaft. A locking pin is fitted on the shaft of each positioning screw to simultaneously insert and fix all the blades and mounting discs in the same vertical plane. A nut is also fitted on the shaft of each positioning screw to position the locking pin.

[0006] By adopting the above scheme, the installation and disassembly of all the blades in the same vertical plane can be realized by installing and disassembling a set of locking pins. The blades do not need to be disassembled one by one, the disassembly and assembly operation is more convenient, and the disassembly and assembly efficiency is higher.

[0007] As a preferred embodiment of the vertical pulverizer for titanium dioxide production of sulfuric acid method, the inner side of the blade is provided with a slot, a limiting column is vertically fixed inside the slot, the limiting column is inserted into the second avoiding groove opened from the edge of the mounting disc to the center of the mounting disc, the pre-positioning of the blade can be realized, the installation angle is ensured to be consistent, that is, the positions of all the blades in the same vertical plane correspond to each other, thereby facilitating the subsequent installation of the locking pin.

[0008] As a preferred embodiment of the vertical pulverizer for titanium dioxide production of sulfuric acid method, the lock includes a lock sleeve at the top and a lock core vertically connected to the bottom of the lock sleeve. The lock sleeve is an n-shaped sleeve, which is fitted on the shaft of the positioning screw from top to bottom, facilitating the positioning of the lock core. The lock core is provided with two parallel lock cores. The blade is provided with a plug hole matched with the lock core, and the plug hole is coaxially arranged in the limiting column. After the lock core is inserted into the plug hole, the blade and the mounting disc can be locked.

[0009] As a preferred embodiment of the vertical pulverizer for titanium dioxide production of sulfuric acid method, the top of the feed chute is connected with a uniform material cylinder communicating therewith and horizontally arranged. The top of the uniform material cylinder is provided with a feeding port. A cross-shaped uniform material plate is coaxially rotatably arranged in the uniform material cylinder. A uniform material motor is arranged outside the uniform material cylinder to drive the rotation of the cross-shaped uniform material plate. The rotating cross-shaped uniform material plate can uniformly discharge the titanium dioxide raw material into the pulverizing cylinder, thereby avoiding local overload.

[0010] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the front side of the pulverizing cylinder is provided with an inspection door which can be opened or closed, and is connected by a hinge, so as to facilitate the inspection, cleaning or adjustment of the internal blades.

[0011] The second technical problem to be solved by the present application is to provide a vertical pulverizer for titanium dioxide production by sulfuric acid method, which actively guides the upward powder to the discharge channel through negative pressure airflow, and improves the discharge from the bottom of the cylinder to the top of the cylinder, solves the problem of powder accumulation, and improves the discharge efficiency and the stability of the pulverizer.

[0012] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: The suction discharge device comprises a vertical discharge cylinder and a discharge pipeline installed on the outer wall of the discharge cylinder and communicating with the inside of the discharge cylinder; The core improvement point is that a suction motor is installed on the top outside of the discharge cylinder, a wind wheel is coaxially connected to the rotating shaft of the suction motor and located inside the discharge cylinder, a wheel cover is installed around the wind wheel, the discharge pipeline extends to the inside of the wheel cover, and a suction port is formed in the bottom of the wheel cover corresponding to the position of the wind wheel.

[0013] By adopting the above-mentioned scheme, during the process of pulverizing the titanium dioxide into powder, the powder will rise due to its light weight, and when the wind wheel is rotated by the suction motor, a negative pressure is formed in the wheel cover, the upward powder is sucked into the wheel cover through the suction port, and is discharged through the discharge pipeline, which not only avoids the accumulation of powder in the upper part of the cylinder, but also improves the fineness of the discharged powder.

[0014] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, a transversely arranged partition plate is fixed on the horizontal plane of the suction port, so that the powder only flows from the suction port, and the suction force can be further improved, the partition plate divides the inside of the discharge cylinder into an upper discharge space and a lower discharge space, and the wind wheel is located in the upper discharge space.

[0015] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the opening diameter of the suction port is smaller than the minimum diameter of the wind wheel, so as to ensure that the negative pressure airflow is concentrated on the suction port, and the capture rate of the powder is improved.

[0016] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the shape of the wind wheel is like a circular truncated cone with a wide upper part and a narrow lower part, and the blades of the wind wheel are arranged in a circumferential array on the side surface of the wind wheel, so that the rotating airflow is more uniform and strong, and the suction capacity is further improved.

[0017] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the bottom of the partition plate is fixed with a guide plate converging to the suction port, which can enhance the coverage of suction and assist in guiding the powder.

[0018] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the discharge pipe is provided with two parts, and the two parts are symmetrically distributed about the wind wheel, further improving the discharge efficiency.

[0019] The third technical problem to be solved by the present application is to provide a vertical pulverizer for titanium dioxide production by sulfuric acid method without tensioning wheel, low wear and easy adjustment, which solves the problem of frequent maintenance and high maintenance cost of traditional driving device.

[0020] To achieve the above-mentioned purpose, the following technical scheme is adopted in the present application: The driving device comprises a device base, a driving motor mounted above the device base, a driving pulley coaxially connected with the rotating shaft of the driving motor, a positioning cylinder vertically arranged beside the device base, a pulverizing rotating shaft rotatably mounted in the positioning cylinder, a driven pulley coaxially connected with the bottom end of the pulverizing rotating shaft, and a belt transmissionally connecting the driving pulley and the driven pulley. The core improvement point is that it further comprises a motor sliding seat slidably mounted on the upper surface of the device base, the driving motor is fixed on the horizontal surface of the motor sliding seat, a plurality of vertically arranged limiting grooves are fixed on the vertical surface of the motor sliding seat, a nut one capable of only vertically sliding is mounted in the limiting groove, a top rod capable of abutting to the vertical surface of the device base is mounted in the nut one, and the distance between the driving pulley and the driven pulley can be adjusted by rotating the top rod to tension the belt.

[0021] By adopting the above scheme, the driving device does not need additional tensioning wheel, and the belt tensioning is realized by directly adjusting the position of the motor sliding seat, avoiding the bidirectional wear of the belt and the tensioning wheel, and prolonging the service life of the belt and the tensioning wheel.

[0022] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the horizontal surface of the device base is provided with an avoiding groove one extending along the direction from the driving pulley to the driven pulley, and the rotating shaft of the driving motor is always located in the avoiding groove one, avoiding the interference between the rotating shaft and the device base.

[0023] As a preferred embodiment of the vertical pulverizer for titanium dioxide production by sulfuric acid method, the end of the top rod away from the vertical surface of the device base is fixed with a rotating disc, which can save labor when operating the rotation of the top rod.

[0024] As a preferred embodiment of a vertical pulverizer for the production of titanium dioxide using the sulfuric acid process, the rotating disc is threadedly fitted with an anti-loosening screw near its edge, which can abut against the vertical surface of the motor slide, reducing the loosening of the adjusted top rod and further ensuring the tension of the belt.

[0025] In a preferred embodiment of a vertical pulverizer for the production of titanium dioxide using the sulfuric acid process, a top seat is fixed at the end of the top rod near the vertical surface of the equipment base. The top seat can increase the contact area, reduce local pressure, and prevent deformation of the vertical surface of the equipment base.

[0026] In a preferred embodiment of a vertical pulverizer for the production of titanium dioxide using the sulfuric acid process, the number of belts is two or more to improve transmission efficiency and stability.

[0027] As a preferred embodiment of a vertical pulverizer for the production of titanium dioxide using the sulfuric acid process, the number of limiting grooves is two or more, and the number of nuts in each limiting groove is two or more, further ensuring the tensioning efficiency of the belt.

[0028] The beneficial effects of this invention are as follows: Crushing device level: 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.

[0029] Suction and discharge device level: 1. Prevent powder accumulation: The suction motor drives the impeller to rotate, creating a negative pressure inside the impeller cover. This draws the powder rising from above into the suction port and discharges it through the discharge pipe, thus preventing powder from accumulating in the upper part of the cylinder. 2. High degree of refinement: Since larger particles cannot be sucked out, only lighter powder is sucked out by negative pressure, making the discharge more refined; 3. Improve discharge efficiency: The guide plate (annular arc panel) gathers the powder in the lower space towards the suction port, enhances the suction coverage, and improves discharge efficiency.

[0030] Drive unit level: 1. Reduced wear and lower costs: No additional tensioner is needed; belt tension is achieved directly by adjusting the position of the motor slide, avoiding bidirectional wear between the belt and the tensioner and extending the life of both the belt and the tensioner.

[0031] 2. Convenient adjustment and high stability: The tension can be adjusted by rotating the top rod. Combined with the limit groove and multi-nut design, it ensures that the motor slide slides smoothly and the tension is evenly distributed.

[0032] 3. Anti-loosening design, high reliability: The anti-loosening screw prevents loosening after adjustment, and the top seat increases the contact area, reduces local pressure, and further improves the service life of the device. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A three-dimensional structural diagram of a vertical pulverizer used in the sulfuric acid process for titanium dioxide production; Figure 2 Three-dimensional structure of the drive device Figure 1 ; Figure 3 Three-dimensional structure of the drive device Figure 2 ; Figure 4 This is a bottom view of the drive unit; Figure 5 This is a three-dimensional diagram of the internal structure of the drive unit; Figure 6 for Figure 5 Partial 3D structural diagram; Figure 7 The three-dimensional structure of the crushing device Figure 1 ; Figure 8 The three-dimensional structure of the crushing device Figure 2 ; Figure 9 This is a three-dimensional diagram of the internal structure of the pulverizing device; Figure 10 This is a three-dimensional structural diagram of the shredder assembly; Figure 11 for Figure 10 A magnified view of a section at point A in the middle; Figure 12 A 3D structural diagram of a single mounting plate and blade assembly; Figure 13 To showcase Figure 12 A three-dimensional structural diagram of the internal structure; Figure 14 This is a three-dimensional structural diagram of the suction and discharge device; Figure 15 This is a three-dimensional structural diagram of the internal structure of the suction and discharge device; Figure 16 Three-dimensional structure of wind turbine and related components Figure 1 ; Figure 17 Three-dimensional structure of wind turbine and related components Figure 2 .

[0035] Reference numerals: 1 - Positioning cylinder; 2-Drive unit; 21-Equipment base; 22-Drive motor; 23-Drive pulley; 24-Positioning cylinder; 25-Crushing shaft; 26-Driven pulley; 27-Belt; 28-Slide rail; 29-Motor slide; 210-Limit groove; 211-Nut one; 212-Top rod; 213-Allowing groove one; 214-Rotating disk; 215-Top seat; 216-Anti-loosening screw; 3-Crushing device; 31-Crushing cylinder; 32-Feed chute; 33-Coupling; 34-Inspection door; 35-Pulverizing cylinder; 36-Inlet; 37-Cross-shaped pulverizing plate; 38-Pulverizing motor; 39-Crushing shaft; 310-Mounting plate; 311-Blade; 312-Positioning screw; 313-Locking sleeve; 314-Locking core; 315-Nut II; 316-Socket; 317-Slot; 318-Limiting post; 319-Allowing groove II; 4-Suction and discharge device; 41-Discharge cylinder; 42-Discharge pipe; 43-Suction motor; 44-Impeller; 45-Wheel cover; 46-Suction port; 47-Spare plate; 48-Guide plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 3 As shown, a vertical pulverizer for the production of titanium dioxide using the sulfuric acid process is used for pulverizing primary titanium dioxide. Specifically, it includes a vertically arranged positioning cylinder 1, a drive device 2 installed on one side of the positioning cylinder, a pulverizing device 3 coaxially connected to the upper part of the positioning cylinder 1 but not connected to the positioning cylinder 1, and a suction and discharge device 4 coaxially connected to the upper part of the pulverizing device 3 and connected to the pulverizing device 3; wherein, the drive device 2 passes through the positioning cylinder 1 to drive the pulverizing device 3 to work.

[0038] The drive unit 2 includes a base 21, a drive motor 22 mounted on the base 21, a drive pulley 23 coaxially connected to the shaft of the drive motor 22, a positioning cylinder 24 vertically arranged on one side of the base 21, a crushing shaft 25 rotatably installed in the positioning cylinder 24, a driven pulley 26 coaxially connected to the bottom end of the crushing shaft 25, and three belts 27 that simultaneously drive the drive pulley 23 and the driven pulley 26.

[0039] like Figures 2 to 6 As shown, it also includes a motor slide 29 that is slidably mounted on the upper surface of the equipment base 21 via a slide rail 28. The drive motor 22 is fixed to the horizontal surface of the motor slide 29 by bolts. Two vertically arranged limiting grooves 210 are welded and fixed on the vertical surface of the motor slide 29. Two nuts 211 that can only slide vertically are installed in each limiting groove 210. All nuts 211 are equipped with push rods 212 that can abut against the vertical surface of the equipment base 21. By rotating the push rods 212, the distance between the driving pulley 23 and the driven pulley 26 can be adjusted to tension the belt 27.

[0040] like Figure 4 As shown, a clearance groove 213 extending from the driving pulley 23 to the driven pulley 26 is provided on the horizontal surface of the equipment base 21. The shaft of the drive motor 22 is always located in the clearance groove 213 to avoid interference between the shaft and the equipment base 21.

[0041] like Figure 6 As shown, a rotating disk 214 is welded and fixed to the end of the push rod 212 away from the vertical plane of the equipment base 21, which makes it easier to rotate the push rod 212.

[0042] Continue as Figure 6 As shown, a top seat 215 is fixed at one end of the top rod 212 near the vertical surface of the equipment base 21. The top seat 215 can increase the contact area, reduce local pressure, and prevent deformation of the vertical surface of the equipment base 21.

[0043] Continue as Figure 6 As shown, the rotating disk 214 has a threaded anti-loosening screw 216 near its edge that can abut against the vertical surface of the motor slide 29, reducing the loosening of the adjusted push rod 212 and further ensuring the tension of the belt 27.

[0044] Working principle of the drive device: Tension adjustment: If belt 27 is loose, rotating disc 214 drives top rod 212 to move laterally, then top seat 215 abuts against the vertical surface of equipment base 21, and at the same time pushes motor slide 29 to slide laterally along slide rail 28, thereby increasing the distance between drive pulley 23 and driven pulley 26, thus tensioning belt 27. Anti-loosening fixation: After adjustment, tighten the anti-loosening screw 216 until the anti-loosening screw 216 abuts against the vertical surface of the motor slide 29 to prevent the rotating disk 214 and the top rod 212 from loosening and ensure stable tension. Long-term use: If readjustment is required, simply loosen the anti-loosening screw 216 and repeat the above steps; there is no need to replace the tensioning wheel, only to periodically check the wear of the top rod 212 and nut 211.

[0045] like Figures 7 to 10 As shown, the crushing device includes a vertically arranged crushing cylinder 31 (open at the top and closed at the top), a feed chute 32 installed on the outer wall of the crushing cylinder 31 and communicating with the inside of the crushing cylinder 31, and a crushing blade assembly rotatably installed inside the crushing cylinder 31 via a coupling 33.

[0046] like Figure 7 As shown, a maintenance door 34 that can be opened or closed is installed on the front side of the crushing cylinder 31. It is connected by a hinge to facilitate the inspection, cleaning or adjustment of the internal blades 311.

[0047] like Figures 7 to 9 As shown, a uniform feeding cylinder 35 is welded to the top of the feeding chute 32 and is arranged horizontally thereto. The top of the uniform feeding cylinder 35 is provided with a feeding port 36. A cross uniform feeding plate 37 is coaxially rotatably installed inside the uniform feeding cylinder 35. A uniform feeding motor 38 is installed outside the uniform feeding cylinder 35 to drive the cross uniform feeding plate 37 to rotate. The rotating cross uniform feeding plate 7 can uniformly feed the titanium dioxide primary product entering the crushing cylinder 31, thereby avoiding local overload.

[0048] like Figures 10 to 11 As shown, the shredder assembly includes a vertically arranged shredder shaft 39; 11 axially linearly arrayed mounting discs 310 are welded and fixed on the shredder shaft 39, and 5 circumferentially arrayed blades 311 are inserted into the edge of each mounting disc 310; 5 circumferentially arrayed positioning screws 312, corresponding vertically to the blades 311, are welded and fixed to the top of the shredder shaft 39. Each positioning screw 312 has a locking device on its shaft that simultaneously engages and fixes all blades 311 and mounting discs 310 on the same vertical plane, and each positioning screw 312 also has a nut 315 for locking the locking device. The installation and removal of all blades 311 on the same vertical plane can be achieved through a set of locking devices, eliminating the need to remove each blade 311 individually during removal, making the installation and removal operation more convenient and efficient.

[0049] like Figure 11As shown, the lock includes a lock sleeve 313 located at the top and a lock cylinder 314 vertically connected to the bottom of the lock sleeve 313. The lock sleeve 313 is an n-shaped sleeve, which is fitted onto the rod of the positioning screw 312 from top to bottom to facilitate the positioning of the lock cylinder 314. There are two lock cylinders 314, which are parallel to each other. The blade 311 has a socket 316 for use with the lock cylinder 314. The socket 316 is coaxially opened in the limiting post 318. After the lock cylinder 314 is inserted into the socket 316, the blade 311 and the mounting plate 310 can be locked.

[0050] like Figures 12 to 13 As shown, the inner side of the blade 311 is provided with a slot 317. A limiting post 318 is vertically welded and fixed inside the slot 317. The limiting post 318 is inserted into the clearance groove 319 opened from the edge of the mounting plate 310 to the center of the mounting plate 310, which can realize the pre-positioning of the blade 311 and ensure that the installation angle is consistent. That is, the positions of all blades 311 on the same vertical plane are corresponding vertically, which facilitates the subsequent installation of the lock.

[0051] Working principle of the crushing device: Feeding and homogenization: The initial titanium dioxide product is poured into the feed port 36 of the homogenizing cylinder 35. The homogenizing motor 38 drives the cross homogenizing plate 37 to rotate, so as to evenly disperse the material into the feed chute 32 and then enter the crushing cylinder 31, thus avoiding the decrease in crushing efficiency caused by the concentration of large particles. Crushing process: An external motor drives the crushing shaft 39 to rotate at high speed through the coupling 33, which drives the mounting plate 310 and the blade 311 to rotate, crushing the titanium dioxide raw product into fine powder. After crushing, the suction discharge device located above the crushing device is used to extract all the crushed fine powder from the top of the crushing cylinder 31 under strong negative pressure. Blade replacement (core advantage): When the blade 311 is worn: Loosen the second nut 315 at the top of the positioning screw 312; lift the mortise lock (lock sleeve 313 + lock cylinder 314) upwards to release the lock on the blade 311 and the mounting plate 310; remove the old blade 311, and pre-position the new blade 311 in the clearance groove 319 of the mounting plate 310 through the slot 317 and the limiting post 318; insert the mortise lock, tighten the nut 315, and the blade 311 can be firmly locked by the lock cylinder 314; Maintenance: Open the inspection door 34 on the front side of the crushing cylinder 31 to directly check the operating status of the crushing shaft 39 and the mounting plate 310, or clean the residue on the blades 311.

[0052] like Figure 14 As shown, the suction discharge device includes a vertically arranged discharge cylinder 41 and a discharge pipe 42 installed on the outer wall of the discharge cylinder 41 and communicating with the inside of the discharge cylinder 41.

[0053] Continue asFigure 14 As shown, there are two discharge pipes 42, which are symmetrically distributed about the location of the impeller 44, further improving the discharge efficiency.

[0054] like Figures 15 to 17 As shown, a suction motor 43 is bolted to the top outer side of the discharge cylinder 41. A fan wheel 44 located inside the discharge cylinder 41 is coaxially connected to the rotating shaft of the suction motor 43. A wheel cover 45 is welded around the fan wheel 44 and covers it. The discharge pipe 42 extends all the way to the inside of the wheel cover 45. A suction port 46 corresponding to the position of the fan wheel 44 is opened at the bottom of the wheel cover 45.

[0055] Continue as Figures 15 to 17 As shown, a horizontally arranged partition plate 47 is also welded and fixed on the horizontal plane where the suction port 46 is located, so that the powder flows only from the suction port 46, which can further enhance the suction. The partition plate 47 divides the interior of the discharge cylinder 41 into an upper discharge space and a lower discharge space, wherein the impeller 44 is located in the upper discharge space.

[0056] Continue as Figures 15 to 17 As shown, the opening diameter of the suction port 46 is smaller than the minimum diameter of the impeller 44, ensuring that the negative pressure airflow is concentrated on the suction port 46, thereby improving the powder capture rate.

[0057] Continue as Figures 15 to 17 As shown, the shape of the wind turbine 44 is like a truncated cone that is wider at the top and narrower at the bottom. The blades of the wind turbine 44 are arranged in a circumferential array on the side of the wind turbine 44, which makes the rotating airflow more uniform and powerful, and further enhances the suction capacity.

[0058] Continue as Figures 15 to 17 As shown, a guide plate 48 is welded and fixed to the bottom of the partition plate 47, which converges towards the suction port 46, thereby enhancing the suction coverage and improving the discharge efficiency. The guide plate 48 is located in the lower discharge space and is an annular arc panel, which will guide the powder more smoothly.

[0059] Working principle of the suction discharge device: Suction negative pressure is formed: When the suction motor 43 starts, it drives the frustum-shaped impeller 44 to rotate at high speed. The side blades of the impeller 44 push the air to flow, forming a negative pressure airflow from top to bottom inside the wheel cover 45. Powder capture and conveying: The powder rising above the crushing cylinder of the crushing device is guided by the annular arc-shaped guide plate 48 to the suction port 46 under negative pressure, and then enters the wheel cover 45 through the suction port 46; subsequently, it is carried by the airflow of the impeller 44 and discharged along the discharge pipe 42 to the collection system, such as... Figure 15 As shown.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical pulverizer for sulfuric acid method titanium dioxide production, comprising a vertical positioning cylinder, a driving device installed beside the positioning cylinder, a pulverizing device coaxially butted above the positioning cylinder and not communicated with the positioning cylinder, and a suction discharging device coaxially butted above the pulverizing device and communicated with the pulverizing device; wherein, The driving device drives the crushing device to work through the positioning cylinder; The crushing device comprises a vertical crushing cylinder, a feeding chute installed on the outer wall of the crushing cylinder and communicating with the inside of the crushing cylinder, and a crushing cutter group rotatably installed in the crushing cylinder through a shaft coupling; The crushing cutter group comprises a vertical crushing shaft, a plurality of axially linearly arranged mounting discs fixed on the crushing shaft, a plurality of circumferentially arrayed blades inserted at the edges of each mounting disc, a plurality of circumferentially arrayed positioning screws fixed on the top of the crushing shaft and corresponding to the positions of the blades, a locking pin fixed on the shaft of each positioning screw to simultaneously insert and fix all the blades and mounting discs in the same vertical plane, and a nut for positioning the locking pin.

2. The vertical pulverizer for sulfuric acid method titanium dioxide production according to claim 1, characterized in that: The inner side of the blade is provided with an insertion slot, and a limiting column is vertically fixed in the insertion slot.

3. The vertical pulverizer for sulfuric acid method titanium dioxide production according to claim 2, characterized in that: The lock comprises a lock sleeve at the top and a lock core vertically connected to the bottom of the lock sleeve; the lock sleeve is an n-shaped sleeve, which is sleeved on the shaft of the positioning screw from top to bottom; the lock core is provided with two lock cores, and the two lock cores are parallel to each other; the blade is provided with an insertion hole matched with the lock core; the insertion hole is coaxially arranged in the limiting column.

4. The vertical pulverizer for sulfuric acid process titanium dioxide production according to claim 1, characterized in that: The top of the feeding chute is connected with a uniform material cylinder communicating therewith and horizontally arranged, the top of the uniform material cylinder is provided with a feeding port, a cross-shaped uniform material plate is coaxially rotatably installed in the uniform material cylinder, and a uniform material motor is installed outside the uniform material cylinder to drive the cross-shaped uniform material plate to rotate.

5. The vertical crusher for producing titanium dioxide by sulfuric acid method according to claim 1, wherein the suction discharge device comprises a vertical discharge cylinder and a discharge pipeline installed on the outer wall of the discharge cylinder and communicating with the inside of the discharge cylinder; characterized in that The top of the discharge cylinder is provided with a suction motor, the rotating shaft of the suction motor is coaxially connected with a wind wheel located in the inside of the discharge cylinder, a wheel cover is installed around the wind wheel, the discharge pipeline extends to the inside of the wheel cover, and the bottom of the wheel cover is provided with a suction port corresponding to the position of the wind wheel.

6. The vertical pulverizer for sulfuric acid process titanium dioxide production according to claim 5, characterized in that: A horizontal spacer plate is also fixed on the horizontal plane where the suction port is located, and the spacer plate divides the inside of the discharge cylinder into an upper discharge space and a lower discharge space, and the wind wheel is located in the upper discharge space.

7. The vertical pulverizer for sulfuric acid process titanium dioxide production according to claim 6, characterized in that: The bottom of the spacer plate is fixed with a flow guide plate converging to the position of the suction port, and the flow guide plate is located in the lower discharge space.

8. The vertical crusher for producing titanium dioxide by sulfuric acid method according to claim 1, wherein the driving device comprises a device base, a driving motor installed above the device base, a driving pulley coaxially connected with the rotating shaft of the driving motor, a positioning cylinder vertically arranged beside the device base, a crushing shaft rotatably installed in the positioning cylinder, a driven pulley coaxially connected with the bottom end of the crushing shaft, and a belt transmissionally connecting the driving pulley and the driven pulley. characterized in that Also include the motor slide seat is slidably installed on the upper surface of the equipment base, the drive motor is fixed on the horizontal surface of the motor slide seat, the vertical surface of the motor slide seat is fixed with a plurality of vertical limiting grooves, a nut capable of only vertically sliding is installed in the limiting groove, a top rod capable of abutting to the vertical surface of the equipment base is installed in the nut, the distance between the driving pulley and the driven pulley can be adjusted by rotating the top rod to tension the belt.

9. The vertical pulverizer for sulfuric acid process titanium dioxide production according to claim 8, characterized in that: The horizontal surface of the equipment base is provided with an avoiding groove one extending along the direction from the driving pulley to the driven pulley, and the rotating shaft of the driving motor is always located in the avoiding groove one.

10. The vertical pulverizer for sulfuric acid process titanium dioxide production according to claim 8, characterized in that: The end of the top rod away from the vertical surface of the equipment base is fixed with a rotating disc, a locking screw rod capable of abutting to the vertical surface of the motor slide seat is threadedly penetrated and assembled at the edge of the rotating disc; the end of the top rod close to the vertical surface of the equipment base is fixed with a top seat.

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