Grinding device for preparing titanium dioxide powder

Abstract

The utility model relates to the technical field of powder preparation, in particular to a grinding device for titanium dioxide powder preparation, which comprises a treatment cylinder, a blanking mechanism, a grinding cylinder, a grinding seat, a filter frame and a power mechanism, four support columns are fixedly connected to the bottom surface of the treatment cylinder, the blanking mechanism is arranged at the top of the treatment cylinder, the grinding cylinder is arranged in the treatment cylinder, and the filter frame is arranged in the treatment cylinder. And the rolling seat is arranged in the rolling cylinder. According to the titanium dioxide particle grinding device, the filter screen is arranged in the filter frame, so that the grinding seat can rotate in the grinding cylinder, titanium dioxide particles are ground through the inner wall of the grinding cylinder and the outer wall of the grinding seat, and titanium dioxide powder can penetrate through the filter screen to fall out of the grinding cylinder; according to the titanium dioxide powder grinding device, multiple grinding structures do not need to be arranged to grind the titanium dioxide particles for multiple times, the grinding process is relatively simple, meanwhile, the titanium dioxide particles can be prevented from being mixed into the powder, and the quality of the titanium dioxide powder is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder preparation technical field, concretely is a kind of grinding device for titanium dioxide powder preparation. BACKGROUND

[0002] Titanium dioxide, with non-toxic, best opacity, best whiteness and brightness, is a kind of white pigment with better performance, is widely used in paint, plastic, papermaking, printing ink etc.Industry, titanium dioxide in production preparation process, in order to subsequent paint production, granular titanium dioxide is often crushed into powder, and prepared into titanium dioxide powder.

[0003] The grinding device for titanium dioxide powder preparation in the prior art is used to crush titanium dioxide particles into powder, and after the first crushing process, there may still be a certain amount of particles in the titanium dioxide powder, and if multiple crushing structures are provided to crush the titanium dioxide particles multiple times, the crushing process is relatively complex. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of grinding device for titanium dioxide powder preparation to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of grinding device for titanium dioxide powder preparation, comprising:

[0007] Processing cylinder, bottom surface is fixedly connected with four support columns;

[0008] Discharging mechanism, is set at the top of processing cylinder;

[0009] Rolling cylinder, is set in processing cylinder interior;

[0010] Rolling seat, is set in the inside of rolling cylinder;

[0011] Filter frame, is fixedly connected on the bottom surface of rolling cylinder, and filter frame interior is provided with filter screen;

[0012] Power mechanism, is set in the inside of rolling cylinder, and power mechanism is located at the top of rolling seat, and power mechanism is used to drive rolling seat to rotate in the inside of rolling cylinder.

[0013] Further, the discharging mechanism comprises:

[0014] Fixed frame, is fixedly connected on the top surface of processing cylinder, and the inside of fixed frame is communicated with the inside of processing cylinder;

[0015] Discharging frame, is fixedly connected on the top surface of fixed frame;

[0016] A rotating shaft is rotatably connected to the inner side of the fixed frame;

[0017] A plurality of connecting plates are fixedly connected to the side of the rotating shaft at equal intervals;

[0018] A driving motor is fixedly connected to the side of the fixed frame, and the output end of the driving motor is in transmission connection with one end of the rotating shaft.

[0019] Preferably, the top surface of the rolling cylinder is fixedly connected with a receiving frame fixedly connected to the inner side of the processing cylinder, and the bottom of the side of the rolling cylinder is fixedly connected with a fixed plate fixedly connected to the inner side of the processing cylinder.

[0020] Preferably, the filter frame is internally provided with a support plate, the filter screen is arranged between the inner side of the filter frame and the side of the support plate, the top surface of the support plate is in contact with the bottom surface of the rolling seat, and the side of the support plate is fixedly connected with a plurality of support rods fixedly connected to the inner side of the filter frame.

[0021] Further, the inner side of the rolling seat is rotatably connected with a connecting seat at the top, the axis of the connecting seat is on the same straight line as the axis of the rolling seat, and the bottom surface of the connecting seat is fixedly connected with a fixed frame rotatably connected to the inner bottom surface of the rolling seat.

[0022] The power mechanism comprises;

[0023] A power seat is located at the top of the rolling seat, and the top of the power seat is conical.

[0024] Four positioning plates are fixedly connected to the side of the power seat, and the side of the positioning plate is fixedly connected to the inner side of the processing cylinder.

[0025] A transmission rod one is rotatably connected to the inner side of the bottom of the power seat, the side bottom of the transmission rod one is fixedly connected to the inner side of the connecting seat, and the axis of the transmission rod one is staggered with the axis of the connecting seat.

[0026] A partition plate is fixedly connected to the inner side of the power seat.

[0027] A power motor one is fixedly connected to the top surface of the partition plate.

[0028] A transmission shaft is rotatably connected to the inner side of the partition plate and the inner bottom surface of the power seat, and the top end of the transmission shaft is in transmission connection with the output end of the power motor one.

[0029] Two transmission gears are respectively fixedly sleeved on the side of the transmission shaft and the top of the side of the transmission rod one, the two transmission gears are in meshing transmission, and the two transmission gears are located in the interior of the power seat.

[0030] Further, the inner bottom surface of the rolling seat is fixedly connected with a connecting frame, the inner side surface of the connecting frame is fixedly connected with a fixed shaft which is fixedly connected with the inner side surface of the rolling seat, and a connecting gear one is fixedly sleeved with the top of the side surface of the fixed shaft;

[0031] The power mechanism further comprises:

[0032] A transmission rod two is rotationally connected in the transmission rod one, the side surface bottom of the transmission rod two is rotationally connected with the inner side surface of the fixed frame, the side surface top of the transmission rod two is rotationally connected with the inner side surface of the partition plate, and a connecting gear two which is in meshing transmission with the connecting gear one is fixedly connected with the side surface bottom of the transmission rod two;

[0033] A power motor two is fixedly connected with the top surface of the partition plate, and the output end of the power motor two is in transmission connection with the top end of the transmission rod two.

[0034] Further, the inner side surface of the supporting plate is rotationally connected with a rotating plate, the top surface of the rotating plate is rotationally connected with the bottom end of the fixed shaft, and the top surface of the rotating plate is rotationally connected with the bottom surface of the rolling seat.

[0035] Compared with the prior art, the utility model has the advantages that:

[0036] 1、Through setting filter screen in filter frame, titanium dioxide particles can be sent to between rolling cylinder and rolling seat, then rolling seat can rotate in the inside of rolling cylinder, titanium dioxide particles are rolled by the inner wall of rolling cylinder and the outer wall of rolling seat, so that titanium dioxide particles are crushed into powder, titanium dioxide powder can fall out from the inside of rolling cylinder through filter screen, titanium dioxide particles can continue to exist in the inside of rolling cylinder, titanium dioxide is rolled repeatedly by rolling cylinder and rolling seat until titanium dioxide particles are completely crushed into powder, it is not necessary to set more crushing structures to crush titanium dioxide particles for many times, the structure is relatively simple, titanium dioxide particles can be avoided to mix into powder, the quality of titanium dioxide powder is improved, and the crushing process is relatively simple and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is an overall structure schematic view of a crushing device for titanium dioxide powder preparation;

[0038] Figure 2 It is an internal structure schematic view of a processing cylinder in the utility model;

[0039] Figure 3 It is a bottom structure schematic view of a rolling cylinder in the utility model;

[0040] Figure 4 It is an internal structure schematic view of a rolling cylinder in the utility model;

[0041] Figure 5 is the internal structure schematic view of the blanking mechanism in the utility model.

[0042] In the figure: 1, processing cylinder; 11, support column; 2, blanking mechanism; 21, fixed frame; 22, blanking frame; 23, rotating shaft; 24, connecting plate; 25, drive motor; 3, rolling cylinder; 31, receiving frame; 32, fixed plate; 4, rolling seat; 41, connecting seat; 42, fixed frame; 43, connecting frame; 44, fixed shaft; 441, connecting gear one; 5, filter frame; 51, filter screen; 52, support plate; 53, support rod; 54, rotating plate; 6, power mechanism; 61, power seat; 62, positioning plate; 63, transmission rod one; 64, partition plate; 65, power motor one; 66, power motor two; 67, transmission rod two; 671, connecting gear two; 68, transmission shaft; 69, transmission gear. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0044] Please refer to Figures 1-3 In the embodiments of the utility model, a crushing device for titanium dioxide powder preparation includes a processing cylinder 1, a blanking mechanism 2, a rolling cylinder 3, a rolling seat 4, a filter frame 5 and a power mechanism 6.

[0045] The bottom surface of the processing cylinder 1 is fixedly connected with four supporting columns 11, the supporting columns 11 can support the processing cylinder 1, the discharging mechanism 2 is arranged at the top of the processing cylinder 1, the rolling cylinder 3 is arranged in the processing cylinder 1, the top surface of the rolling cylinder 3 is fixedly connected with a material receiving frame 31 fixedly connected with the inner side of the processing cylinder 1, the bottom surface of the side of the rolling cylinder 3 is fixedly connected with a fixed plate 32 fixedly connected with the inner side of the processing cylinder 1, the fixed plate 32 can support the rolling cylinder 3, the rolling seat 4 is arranged in the rolling cylinder 3, the filter frame 5 is fixedly connected to the bottom surface of the rolling cylinder 3, the filter frame 5 is provided with a filter screen 51 inside, the filter frame 5 is provided with a supporting plate 52 inside, the filter screen 51 is arranged between the inner side of the filter frame 5 and the side of the supporting plate 52, the top surface of the supporting plate 52 is in contact with the bottom surface of the rolling seat 4, the side of the supporting plate 52 is fixedly connected with a plurality of supporting rods 53 fixedly connected with the inner side of the filter frame 5, the filter screen 51 and the supporting plate 52 can block the bottom of the rolling cylinder 3, the filter frame 5 can support the supporting plate 52 through the supporting rods 53, the supporting plate 52 can provide support for the rolling seat 4, the top of the supporting rod 53 is triangular, which can prevent titanium dioxide powder from accumulating on the supporting rod 53, the power mechanism 6 is arranged in the rolling cylinder 3, and the power mechanism 6 is located at the top of the rolling seat 4, and the power mechanism 6 is used to drive the rolling seat 4 to rotate in the rolling cylinder 3.

[0046] Specifically, the discharging mechanism 2 can send titanium dioxide particles into the processing cylinder 1, the titanium dioxide particles can fall on the material receiving frame 31 through the power mechanism 6, and then slide along the material receiving frame 31 into the rolling cylinder 3, so that the titanium dioxide particles fall between the rolling cylinder 3 and the rolling seat 4, the power mechanism 6 can make the rolling seat 4 rotate in the rolling cylinder 3, the inner wall of the rolling cylinder 3 and the outer wall of the rolling seat 4 can crush the titanium dioxide particles, so that the titanium dioxide particles are crushed into powder, the titanium dioxide powder can fall out of the inside of the rolling cylinder 3 through the filter screen 51, while the titanium dioxide particles are blocked by the filter screen 51 and remain in the inside of the rolling cylinder 3, so that the titanium dioxide can be crushed again by the rolling cylinder 3 and the rolling seat 4 subsequently, so that the titanium dioxide particles that are not completely crushed are repeatedly crushed until the titanium dioxide particles are completely crushed into powder, the titanium dioxide powder can pass through the inside of the filter frame 5 and then fall into the inside of the processing cylinder 1, and finally fall out of the opening at the bottom of the processing cylinder 1, without the need to set more crushing structures to crush the titanium dioxide particles multiple times, the structure is relatively simple, and the titanium dioxide particles can be prevented from mixing into the powder, which is helpful to improve the quality of the titanium dioxide powder, and the crushing process is relatively simple. Example one

[0047] As Figures 3-4As shown, in the embodiment, the inner side top of the rolling seat 4 is rotationally connected with a connecting seat 41, the rolling seat 4 can rotate relative to the connecting seat 41, the axis of the connecting seat 41 is on the same line with the axis of the rolling seat 4, the bottom of the connecting seat 41 is fixedly connected with a fixed frame 42 rotationally connected with the inner bottom of the rolling seat 4;

[0048] The power mechanism 6 comprises a power seat 61, four positioning plates 62, a transmission rod one 63, a partition plate 64, a power motor one 65, a transmission shaft 68 and two transmission gears 69.

[0049] The power seat 61 is located on the top of the rolling seat 4, the top of the power seat 61 is conical, the titanium dioxide particles falling on the conical top surface of the power seat 61 can slide downward along the conical top surface, then fall through the processing cylinder 1 and the power seat 61 and fall on the receiving frame 31, the four positioning plates 62 are fixedly connected on the side of the power seat 61, the side of the positioning plate 62 is fixedly connected with the inner side of the processing cylinder 1, the positioning plate 62 can fix the power seat 61 on the inner wall of the processing cylinder 1, the positioning plate 62 can be provided as a hollow structure, the power cord of the power motor one 65 can extend through the inside of the positioning plate 62 to the outside of the processing cylinder 1, the top of the positioning plate 62 is triangular to avoid the titanium dioxide particles falling on the top of the positioning plate 62, the transmission rod one 63 is rotationally connected on the inner bottom of the bottom of the power seat 61, the side bottom of the transmission rod one 63 is fixedly connected with the inner side of the connecting seat 41, the axis of the transmission rod one 63 is staggered with the axis of the connecting seat 41, the partition plate 64 is fixedly connected on the inner side of the power seat 61, the power motor one 65 is fixedly connected on the top of the partition plate 64, the partition plate 64 can support the power motor one 65, the transmission shaft 68 is rotationally connected on the inner side of the partition plate 64 and the inner bottom of the power seat 61, the top end of the transmission shaft 68 is in transmission connection with the output end of the power motor one 65, the two transmission gears 69 are respectively fixedly sleeved on the side of the transmission shaft 68 and the top of the side of the transmission rod one 63, the two transmission gears 69 are in meshing transmission, the two transmission gears 69 are located in the power seat 61.

[0050] In specific implementation, the power motor one 65 can drive the transmission shaft 68 to rotate, the transmission shaft 68 can drive the transmission rod one 63 to rotate through the transmission gears 69, the transmission rod one 63 can drive the connecting seat 41 to rotate, the connecting seat 41 can drive the fixed frame 42 to rotate around the transmission rod one 63 as the center, the axis of the connecting seat 41 is staggered with the axis of the transmission rod one 63, in this way, the connecting seat 41 and the fixed frame 42 can drive the rolling seat 4 to rotate around the transmission rod one 63 as the center, the axis of the transmission rod one 63 is on the same line with the axis of the rolling cylinder 3, in this way, the rolling seat 4 can rotate along the inner edge of the rolling cylinder 3, the titanium dioxide particles in the rolling cylinder 3 can be circularly crushed by the rolling seat 4, rough surfaces can be provided on the inner wall of the rolling cylinder 3 and the inner wall of the rolling seat 4, which is beneficial to improve the crushing effect.

[0051] As Figure 4As shown, in this embodiment, the inner bottom surface of the rolling seat 4 is fixedly connected with a connecting frame 43, the inner side surface of the connecting frame 43 is fixedly connected with a fixed shaft 44 fixedly connected with the inner side surface bottom of the rolling seat 4, and the connecting frame 43 can support the fixed shaft 44; the side surface top of the fixed shaft 44 is fixedly sleeved with a connecting gear one 441;

[0052] The power mechanism 6 further comprises a transmission rod two 67 and a power motor two 66.

[0053] The transmission rod two 67 is rotationally connected inside the transmission rod one 63, the side surface bottom of the transmission rod two 67 is rotationally connected with the inner side surface of the fixed frame 42, the side surface top of the transmission rod two 67 is rotationally connected with the inner side surface of the partition plate 64, the side surface bottom of the transmission rod two 67 is fixedly connected with a connecting gear two 671 engaged with the connecting gear one 441 for transmission, the power motor two 66 is fixedly connected on the top surface of the partition plate 64, and the output end of the power motor two 66 is in transmission connection with the top end of the transmission rod two 67.

[0054] The inner side surface of the support plate 52 is rotationally connected with a rotating plate 54, the top surface of the rotating plate 54 is rotationally connected with the bottom end of the fixed shaft 44, and the top surface of the rotating plate 54 is rotationally connected with the bottom surface of the rolling seat 4; the rolling seat 4 can drive the rotating plate 54 to rotate inside the support plate 52, and the rolling seat 4 and the fixed shaft 44 can rotate relative to the rotating plate 54; the rotating plate 54 can support the rolling seat 4.

[0055] In specific implementation, when the power motor one 65 drives the transmission shaft 68 to rotate, so that the connecting seat 41 drives the rolling seat 4 to rotate along the inner edge of the rolling cylinder 3, the power motor two 66 can drive the transmission rod two 67 to rotate, the transmission rod two 67 can drive the fixed shaft 44 to rotate through the connecting gear two 671 and the connecting gear one 441, the fixed shaft 44 can drive the rolling seat 4 to rotate, so that the rolling seat 4 rotates on the connecting seat 41 and the fixed frame 42, thereby making the rolling seat 4 rotate, which can make the rolling seat 4 rotate along the inner edge of the rolling cylinder 3 while making the rolling seat 4 rotate, and is beneficial to improve the crushing effect. Embodiment two

[0056] On the basis of embodiment one, as shown in the drawings, Figure 5 In this embodiment, the discharging mechanism 2 comprises a fixed frame 21, a discharging frame 22, a rotating shaft 23, a plurality of connecting plates 24, and a driving motor 25.

[0057] The fixed frame 21 is fixedly connected on the top surface of the processing cylinder 1, the inside of the fixed frame 21 is communicated with the inside of the processing cylinder 1, the discharging frame 22 is fixedly connected on the top surface of the fixed frame 21, the rotating shaft 23 is rotationally connected on the inner side surface of the fixed frame 21, the plurality of connecting plates 24 are annularly and equidistantly fixedly connected on the side surface of the rotating shaft 23, and the driving motor 25 is fixedly connected on the side surface of the fixed frame 21, and the output end of the driving motor 25 is in transmission connection with one end of the rotating shaft 23.

[0058] In the implementation, the titanium dioxide particles can be transported into the lower frame 22, and the titanium dioxide particles fall on the connecting plate 24 through the lower frame 22. The driving motor 25 can drive the rotating shaft 23 to rotate, and the rotating shaft 23 can drive the connecting plate 24 to rotate. The titanium dioxide particles can be gradually transported to the bottom of the fixed frame 21 through the rotation of the connecting plate 24, and then the titanium dioxide particles can fall into the inside of the processing cylinder 1. The titanium dioxide particles can be accumulated at the top of the fixed frame 21 and the inside of the lower frame 22, and the titanium dioxide particles can be gradually transported through the connecting plate 24. The titanium dioxide particles can block the inside of the processing cylinder 1, so as to avoid the dust in the inside of the processing cylinder 1 from floating out.

[0059] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0060] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A grinding device for preparing titanium dioxide powder, characterized in that: include: The bottom surface of the treatment cylinder (1) is fixedly connected to four support columns (11); A material discharge mechanism (2) is provided on the top of the processing cylinder (1); A rolling cylinder (3) is arranged inside the processing cylinder (1); A rolling seat (4) is arranged inside the rolling cylinder (3); A filter frame (5) is fixedly connected to the bottom surface of the rolling cylinder (3), and a filter screen (51) is provided inside the filter frame (5); The power mechanism (6) is arranged inside the rolling cylinder (3), and the power mechanism (6) is located on the top of the rolling seat (4). The power mechanism (6) is used to drive the rolling seat (4) to rotate inside the rolling cylinder (3).

2. The grinding device for preparing titanium dioxide powder according to claim 1, characterized in that: The blanking mechanism (2) comprises: A fixed frame (21) is fixedly connected to the top surface of the treatment cylinder (1), and the interior of the fixed frame (21) is communicated with the interior of the treatment cylinder (1); A blanking frame (22) is fixedly connected to the top surface of the fixed frame (21); A rotating shaft (23) is rotatably connected to the inner side of the fixed frame (21); A plurality of connecting plates (24) are fixedly connected to the side of the rotating shaft (23) at equal intervals in an annular manner; The driving motor (25) is fixedly connected to the side of the fixed frame (21), and the output end of the driving motor (25) is transmission-connected to one end of the rotating shaft (23).

3. The grinding device for preparing titanium dioxide powder according to claim 1, characterized in that: The top surface of the rolling cylinder (3) is fixedly connected to a material receiving frame (31) fixedly connected to the inner side surface of the processing cylinder (1), and the bottom of the side surface of the rolling cylinder (3) is fixedly connected to a fixing plate (32) fixedly connected to the inner side surface of the processing cylinder (1).

4. The grinding device for preparing titanium dioxide powder according to claim 1, characterized in that: A support plate (52) is provided inside the filter frame (5), and the filter screen (51) is provided between the inner side surface of the filter frame (5) and the side surface of the support plate (52). The top surface of the support plate (52) contacts the bottom surface of the rolling seat (4). The side surface of the support plate (52) is fixedly connected to a plurality of support rods (53) fixedly connected to the inner side surface of the filter frame (5).

5. The grinding device for preparing titanium dioxide powder according to claim 4, characterized in that: The top of the inner side of the rolling seat (4) is rotatably connected to a connecting seat (41), the axis of the connecting seat (41) and the axis of the rolling seat (4) are located on the same straight line, and the bottom surface of the connecting seat (41) is fixedly connected to a fixing frame (42) rotatably connected to the inner bottom surface of the rolling seat (4); The power mechanism (6) includes: The power seat (61) is located on the top of the rolling seat (4), and the top of the power seat (61) is conical; Four positioning plates (62) are fixedly connected to the side of the power base (61), and the side of the positioning plate (62) is fixedly connected to the inner side of the processing cylinder (1); The transmission rod (63) is rotatably connected to the inner side surface of the bottom of the power seat (61), the bottom of the side surface of the transmission rod (63) is fixedly connected to the inner side surface of the connecting seat (41), and the axis of the transmission rod (63) and the axis of the connecting seat (41) are staggered with each other; A partition (64) is fixedly connected to the inner side of the power seat (61); A power motor (65) is fixedly connected to the top surface of the partition (64); The transmission shaft (68) is rotatably connected to the inner side of the partition (64) and the inner bottom surface of the power seat (61), and the top of the transmission shaft (68) is transmission-connected to the output end of the power motor (65); The two transmission gears (69) are respectively fixedly sleeved on the side of the transmission shaft (68) and the top of the side of the transmission rod (63). The two transmission gears (69) are engaged for transmission. The two transmission gears (69) are both located inside the power seat (61).

6. The grinding device for preparing titanium dioxide powder according to claim 5, characterized in that: The inner bottom surface of the rolling seat (4) is fixedly connected to a connecting frame (43), the inner side surface of the connecting frame (43) is fixedly connected to a fixed shaft (44) fixedly connected to the bottom of the inner side surface of the rolling seat (4), and the top of the side surface of the fixed shaft (44) is fixedly sleeved with a connecting gear (441); The power mechanism (6) further comprises: The second transmission rod (67) is rotatably connected to the inside of the first transmission rod (63), the bottom of the side surface of the second transmission rod (67) is rotatably connected to the inner side surface of the fixed frame (42), the top of the side surface of the second transmission rod (67) is rotatably connected to the inner side surface of the partition (64), and the bottom of the side surface of the second transmission rod (67) is fixedly connected to the second connecting gear (671) that meshes with the first connecting gear (441). The second power motor (66) is fixedly connected to the top surface of the partition (64), and the output end of the second power motor (66) is connected to the top end of the second transmission rod (67).

7. The grinding device for preparing titanium dioxide powder according to claim 6, characterized in that: The inner side surface of the support plate (52) is rotatably connected to a rotating plate (54), the top surface of the rotating plate (54) is rotatably connected to the bottom end of the fixed shaft (44), and the top surface of the rotating plate (54) is rotatably connected to the bottom surface of the rolling seat (4).

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