Premixing device for producing titanium dioxide through continuous acidolysis

Abstract

The utility model relates to the technical field of titanium dioxide treatment, and discloses a premixing device for producing titanium dioxide through continuous acidolysis, which comprises a collecting base, a support frame body is arranged at the top of the collecting base, a support pipe fitting is arranged on the right side of the top of the collecting base, and a treatment barrel piece is arranged on the side surface of the support pipe fitting. A feeding assembly is arranged at the top of the treatment cylinder part, and an inner mixing treatment assembly is arranged on the inner wall of the treatment cylinder part. According to the premixing device for producing titanium dioxide through continuous acidolysis, by arranging the feeding assembly, titanium dioxide needing to be premixed is added from the feeding assembly arranged at the top, the titanium dioxide can be placed on the uppermost first sieve plate during adding, and screening treatment can be conducted through cooperation of the reciprocating assembly with the first sieve plate and the second sieve plate; it is ensured that the particle size of the entering titanium dioxide meets the requirement, and it is avoided that too large caked titanium dioxide is added into the treatment barrel to affect the internal mixing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of titanium dioxide processing technology, specifically a premixing device for continuous acid hydrolysis production of titanium dioxide. Background Technology

[0002] Titanium dioxide, as a high-performance white pigment, is widely used in coatings, plastics, papermaking, inks, and many other fields. With the rapid development of global industry and the improvement of people's living standards, the market demand for titanium dioxide continues to grow. In the production process of titanium dioxide, acid hydrolysis is a key step, and premixing, as an important step before acid hydrolysis, directly affects the rate, conversion rate, and final quality of the titanium dioxide product.

[0003] The prior art, disclosed in publication number CN109173959A, is a premixing device for continuous acid hydrolysis production of titanium dioxide. The device includes a premixing tank with a mineral powder inlet at its top. The inlet is connected to a mineral powder silo, and to a mineral powder pipe. A spraying mechanism is located at the top of the premixing tank. This mechanism comprises multiple coaxial rings with internal pipes of different diameters, all interconnected. Each ring has several spray holes. Two vertically arranged stirring mechanisms are located at the bottom of the premixing tank, with the stirring directions of the two mechanisms being opposite to each other. This device ensures uniform mixing of the reactants and improves acid hydrolysis efficiency.

[0004] The aforementioned premixing device for continuous acidolysis of titanium dioxide production uses a mineral powder pipe with radial nozzles to ensure that the mineral powder is evenly distributed at the bottom of the premixing tank during feeding, achieving a covered feeding of the mineral powder. When sulfuric acid is sprayed, this effectively improves the acidolysis efficiency. However, the premixing device does not have a primary screening component before feeding, which cannot remove large particles of titanium dioxide and prevent them from affecting the internal premixing rate. As a result, the device is not effective in use and needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide a premixing device for continuous acid hydrolysis production of titanium dioxide, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a premixing device for continuous acid hydrolysis production of titanium dioxide, comprising a collection base, a support frame on the top of the collection base, a processing cylinder on the side of the support frame, a feeding assembly on the top of the processing cylinder, an internal mixing processing assembly on the inner wall of the processing cylinder, and a material adding pipe on the top of the processing cylinder.

[0007] The feeding assembly includes a feeding hopper, a connecting frame plate, an inner miniature stepper motor, an elliptical block, a connecting plate, a spring, a first screen plate, a telescopic rod, and a second screen plate. The feeding hopper is fixedly connected to the top of the processing cylinder. The connecting frame plate is fixedly connected to both sides of the top of the feeding hopper. The inner miniature stepper motor is fixedly connected to the inner side of the connecting frame plate. The elliptical block is fixedly connected to the output shaft of the inner miniature stepper motor. The connecting plate is slidably connected to the inner left side of the connecting frame plate. The spring is fixedly connected to the inner bottom end of the connecting frame plate. The connecting plate is also fixedly connected to the top of the spring. The elliptical block contacts the top of the connecting plate near the left side. The first screen plate is fixedly connected to the end of the connecting plate away from the connecting frame plate. The telescopic rod is fixedly connected to the bottom of the first screen plate, and the second screen plate is fixedly connected to the bottom of the telescopic rod.

[0008] Preferably, the internal mixing processing assembly includes a stepper motor, a rotating shaft, a first connecting round seat, a first stirring component, an inner ring plate, a placement plate, an inner impact block, a second connecting round seat, and a second stirring component. The rotating shaft is fixedly connected to the output shaft of the stepper motor. Multiple first connecting round seats are axially fixedly connected to the surface of the rotating shaft. The first stirring component is fixedly connected to the side of the first connecting round seat. The inner ring plate is fixedly connected to the inner wall of the processing cylinder. The placement plate is fixedly connected to the inner wall of the inner ring plate. Two second connecting round seats are axially fixedly connected to the surface of the rotating shaft near the top. The second stirring component is fixedly connected to the side of the second connecting round seat.

[0009] Preferably, the first stirring element is a straight rod shape, and there are four first stirring elements on one side. The four first stirring elements are divided into two groups, with two first stirring elements in each group. The two upper first stirring elements are inclined downwards, and the two lower first stirring elements are inclined upwards. The second stirring element is wavy and extends radially from the second connecting round seat.

[0010] Preferably, the bottom of the processing cylinder is provided with a support plate, and the support plate has a feeding groove inside.

[0011] Preferably, the stepper motor is fixedly connected to the top of the support plate. The support plate serves to house the stepper motor and can be equipped with a feeding slot to ensure normal feeding and prevent the stepper motor from being suspended in the air, thus ensuring the normal use of the device.

[0012] Preferably, the diameter of the inner ring plate is adapted to the inner diameter of the processing cylinder.

[0013] Preferably, the placement plate and the inner impact block are distributed in a ring at equal intervals on the inner ring plate.

[0014] Preferably, the inner impact block is fixedly connected to the side wall of the placement plate away from the inner ring plate.

[0015] Preferably, the mesh diameter of the second sieve plate is smaller than that of the first sieve plate. The smaller mesh size of the second sieve plate enables finer sieving. The unscreened powder needs to be processed again, which can be done externally to speed up the work.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This premixing device for continuous acid hydrolysis production of titanium dioxide is equipped with a feeding component. The titanium dioxide to be premixed is added from the top of the feeding component. When added, it can be placed on the top first sieve plate. The reciprocating component, together with the first and second sieve plates, can perform sieving to ensure that the particle size of the incoming titanium dioxide meets the requirements and to prevent excessively large clumps of titanium dioxide from entering the processing cylinder and affecting the internal mixing efficiency. At the same time, the feeding component has a dual function of feeding and screening, which can also ensure that the screened titanium dioxide enters the cylinder directly, ensuring the continuity of the production process.

[0018] 2. This premixing device for continuous acid hydrolysis production of titanium dioxide is equipped with an internal mixing processing component. When the stepper motor is started, it drives the rotating shaft to rotate. With the help of the first and second stirring components with special surface settings, the material moves at high speed in the mixing chamber under the stirring action, constantly impacting the inner impact block, so that the material particles are broken and redispersed, which can achieve better mixing and crushing and good processing effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the feeding assembly of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a three-dimensional structural diagram of the processing cylinder and internal mixing processing component of this utility model;

[0023] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B;

[0024] Figure 6 This is a partial three-dimensional structural schematic diagram of the internal mixing processing component of this utility model;

[0025] Figure 7 This is a partial three-dimensional structural diagram of the feeding assembly of this utility model;

[0026] Figure 8This is a partial top view of the feeding assembly of this utility model.

[0027] In the diagram: 1. Processing cylinder; 2. Support plate; 3. Feeding assembly; 301. Feeding hopper; 302. Connecting frame plate; 303. Inner small stepper motor; 304. Elliptical block; 305. Connecting plate; 306. Spring; 307. First sieve plate; 308. Telescopic rod; 309. Second sieve plate; 4. Inner mixing assembly; 401. Stepper motor; 402. Rotating shaft; 403. First connecting round seat; 404. First stirring component; 405. Inner ring plate; 406. Placement plate; 407. Inner impact block; 408. Second connecting round seat; 409. Second stirring component; 5. Collection base; 6. Support frame; 7. Discharge chute; 8. Material adding pipe. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-8 The present invention provides the following technical solution:

[0030] A premixing device for continuous acid hydrolysis production of titanium dioxide includes a collection base 5, a support frame 6 on the top of the collection base 5, a processing cylinder 1 on the side of the support frame 6, a feeding assembly 3 on the top of the processing cylinder 1, an internal mixing processing assembly 4 on the inner wall of the processing cylinder 1, a bearing plate 2 at the bottom of the inner part of the processing cylinder 1, a feeding trough 7 inside the bearing plate, and a material adding pipe 8 on the top of the processing cylinder 1.

[0031] The feeding assembly 3 includes a feeding hopper 301, a connecting frame plate 302, an inner miniature stepper motor 303, an elliptical block 304, a connecting plate 305, a spring 306, a first screen plate 307, a telescopic rod 308, and a second screen plate 309. The feeding hopper 301 is fixedly connected to the top of the processing cylinder 1. The connecting frame plate 302 is fixedly connected to both sides of the top of the feeding hopper 301. The inner miniature stepper motor 303 is fixedly connected to the inner side of the connecting frame plate 302. The elliptical block 304 is fixedly connected to the output shaft of the inner miniature stepper motor 303. The connecting plate 305 is slidably connected to the inner left side of the connecting frame plate 302. The spring 306 is fixedly connected to... The inner bottom of the connecting frame plate 302 is connected to the top of the spring member 306 via a connecting plate 305. The elliptical block 304 contacts the top of the connecting plate 305 near the left side. The first sieve plate 307 is fixedly connected to the end of the connecting plate 305 away from the connecting frame plate 302. The telescopic rod 308 is fixedly connected to the bottom of the first sieve plate 307. The second sieve plate 309 is fixedly connected to the bottom of the telescopic rod 308. The mesh diameter of the second sieve plate 309 is smaller than that of the first sieve plate 307. The smaller mesh of the second sieve plate 309 allows for finer sieving. Unscreened powder needs secondary processing, which can be done externally to accelerate work efficiency.

[0032] The internal mixing processing component 4 includes a stepper motor 401, a rotating shaft 402, a first connecting round seat 403, a first stirring component 404, an inner ring plate 405, a placement plate 406, an inner impact block 407, a second connecting round seat 408, and a second stirring component 409. The rotating shaft 402 is fixedly connected to the output shaft of the stepper motor 401. Multiple first connecting round seats 403 are axially fixedly connected to the surface of the rotating shaft 402. The first stirring component 404 is fixedly connected to the side of the first connecting round seat 403. The inner ring plate 405 is fixedly connected to the inner wall of the processing cylinder 1. The placement plate 406 is fixedly connected to the inner wall of the inner ring plate 405. Two second connecting round seats 408 are axially fixedly connected to the surface of the rotating shaft 402 near the top. The second stirring component 409 is fixedly connected to the side of the second connecting round seat 408. The first stirring component 404 is a straight rod shape, and there are four first stirring components 404 on one side. The first agitator 404 is divided into two groups, with two agitators 404 in each group. The two upper agitators 404 are inclined downwards, and the two lower agitators 404 are inclined upwards. The second agitator 409 is a wave-shaped agitator extending radially from the second connecting round seat 408. The stepper motor 401 is fixedly connected to the top of the support plate 2. The support plate 2 serves to house the stepper motor 401 and can be equipped with a feeding chute to ensure normal feeding and prevent the stepper motor 401 from being suspended, thus ensuring the normal use of the device. There are two inner ring plates 405, which are distributed at the top and bottom inside the processing cylinder 1. The diameter of the inner ring plates 405 is adapted to the inner diameter of the processing cylinder 1. There are several placement plates 406 and inner impact blocks 407, which are distributed in a ring at equal intervals on the inner ring of the inner ring plates 405. The inner impact blocks 407 are fixedly connected to the side wall of the placement plates 406 away from the inner ring plates 405.

[0033] In use, the titanium dioxide powder requiring premixing is added through the top-mounted feeding assembly 3, placed on the uppermost first sieve plate 307. Then, the internal small stepper motor 303 is activated to rotate the elliptical block 304. When one long side of the elliptical block 304 contacts the top of the connecting plate 305, it presses the connecting plate 305 downwards, causing the first sieve plate 307 and the second sieve plate 309 to move downwards. When the long side of the elliptical block 304 is no longer in contact with the connecting plate 305, the downward pressure on the connecting plate 305 disappears. The spring 306 is no longer under pressure. Under the action of the spring 306, the connecting plate 305 can rebound upwards, causing the first sieve plate 307 and the second sieve plate 309 to slide upwards. During the rotation of the elliptical block 304 driven by the inner small stepper motor 303, the connecting plate 305 can be driven to reciprocate continuously, sieving the titanium dioxide placed on top. The up-and-down swinging force can drive the telescopic rod 308 to swing up and down, limiting the shaking of the second sieve plate 309. The shaking amplitude of the second sieve plate 309 is greater than that of the first sieve plate 307. The titanium dioxide passing through the 307 sieve enters the second sieve plate 309 for a second stage of sieving, ensuring that the particle size of the incoming titanium dioxide meets the requirements and preventing excessively large clumps of titanium dioxide from entering the processing cylinder 1 and affecting the internal mixing efficiency. This results in good performance during use. Furthermore, an internal mixing component 4 is installed inside the processing cylinder 1. During operation, the stepper motor 401 below can be activated to drive the rotating shaft 402 to rotate, which in turn drives the first connecting seat 403 and the second connecting seat 408 to rotate, thereby driving the first stirring component 404 and the second stirring component 408. 9. The upper second stirring element 409 is inclined and spiral-shaped, which promotes the material to turn up and down; the lower first stirring element 404 is flat and rod-shaped, which enhances the shearing and mixing effect and the treatment effect is good. The inner wall of the treatment cylinder 1 is provided with placement plate 406 and inner impact block 407. Under the action of the stirring paddle, the material moves at high speed in the mixing chamber and continuously impacts the inner impact block 407, so that the material particles are broken and redispersed, which can achieve better mixing and crushing and the treatment effect is good. Materials that do not need to be screened are added to the treatment cylinder 1 through the material addition pipe 8.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A premixing device for continuous acid hydrolysis production of titanium dioxide, comprising a collection base (5), characterized in that: The top of the collection base (5) is provided with a support frame (6), the top of the support frame (6) is provided with a processing cylinder (1), the top of the processing cylinder (1) is provided with a feeding assembly (3), the inner wall of the processing cylinder (1) is provided with an internal mixing processing assembly (4), and the top of the processing cylinder (1) is provided with a material adding pipe (8). The feeding assembly (3) includes a feeding hopper (301), a connecting frame plate (302), an inner small stepper motor (303), an elliptical block (304), a connecting plate (305), a spring (306), a first screen plate (307), a telescopic rod (308), and a second screen plate (309). The feeding hopper (301) is fixedly connected to the top of the processing cylinder (1). The connecting frame plate (302) is fixedly connected to both sides of the top of the feeding hopper (301). The inner small stepper motor (303) is fixedly connected to the inner side of the connecting frame plate (302). The elliptical block (304) is fixedly connected to the inner small stepper motor (303). The output shaft, the connecting plate (305) is slidably connected to the inside left side of the connecting frame plate (302), the spring (306) is fixedly connected to the inside bottom end of the connecting frame plate (302), the connecting plate (305) is fixedly connected to the top of the spring (306), the elliptical block (304) is connected to the top of the connecting plate (305) near the left side, the first sieve plate (307) is fixedly connected to the end of the connecting plate (305) away from the connecting frame plate (302), the telescopic rod (308) is fixedly connected to the bottom of the first sieve plate (307), and the second sieve plate (309) is fixedly connected to the bottom of the telescopic rod (308).

2. The premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 1, characterized in that: The internal mixing assembly (4) includes a stepper motor (401), a rotating shaft (402), a first connecting seat (403), a first stirring component (404), an inner ring plate (405), a placement plate (406), an inner impact block (407), a second connecting seat (408), and a second stirring component (409). The rotating shaft (402) is fixedly connected to the output shaft of the stepper motor (401), and multiple first connecting seats (403) are axially fixedly connected to the rotating shaft. The first stirring element (404) is fixedly connected to the side of the first connecting round seat (403) on the surface of the rod (402), the inner ring plate (405) is fixedly connected to the inner wall of the processing cylinder (1), the placement plate (406) is fixedly connected to the inner wall of the inner ring plate (405), the two second connecting round seats (408) are fixedly connected axially to the surface of the rotating shaft (402) near the top, and the second stirring element (409) is fixedly connected to the side of the second connecting round seat (408).

3. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 2, characterized in that: The first stirring element (404) is in the shape of a straight rod, and the second stirring element (409) is in the shape of a wave extending radially from the second connecting round seat (408).

4. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 1, characterized in that: The processing cylinder (1) has a support plate (2) at its bottom, and the support plate (2) has a feeding groove (7) inside.

5. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 2, characterized in that: The stepper motor component (401) is fixedly connected to the top of the support plate (2).

6. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 2, characterized in that: The diameter of the inner ring plate (405) is adapted to the inner diameter of the processing cylinder (1).

7. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 2, characterized in that: The placement plate (406) and the inner impact block (407) are distributed in a ring at equal intervals on the inner ring plate (405).

8. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 2, characterized in that: The inner impact block (407) is fixedly connected to the side wall of the placement plate (406) away from the inner ring plate (405).

9. A premixing device for continuous acid hydrolysis production of titanium dioxide according to claim 1, characterized in that: The mesh diameter of the second sieve plate (309) is smaller than that of the first sieve plate (307).

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