Device for detecting dispersibility of titanium dioxide for color master batch

Abstract

The utility model discloses a titanium dioxide dispersibility detection device for color master batch, and particularly relates to the technical field of titanium dioxide dispersibility detection, the titanium dioxide dispersibility detection device comprises a base, the top surface of the base is fixedly provided with a mixing drum, the outer side of the mixing drum is fixedly communicated with a plurality of material guide pipes, the heights of the material guide pipes are different, and the material guide pipes are arranged on the base. A plurality of material guiding pipes are arranged on the base, an electromagnetic valve is arranged on each material guiding pipe, a water pump is fixedly arranged on the top surface of the base, each material guiding pipe is communicated with the water pump through a communicating pipe, and a detection cylinder is fixed and communicated with the outer side of the water pump. The device is simple to operate, titanium dioxide slurry in the stirring barrel can be detected at different heights for multiple times, the accuracy of dispersity detection can be ensured, and meanwhile, the stirring barrel can adjust the rotating angle of the stirring rod according to different stirring requirements while ensuring uniform stirring, so that the flow pattern and shearing force distribution of stirring can be adjusted; therefore, the titanium dioxide slurry is better dispersed, and the stirring efficiency and uniformity are improved.

Description

Technical Field

[0001] This utility model relates to the field of titanium dioxide dispersibility testing technology, and more specifically, to a device for testing the dispersibility of titanium dioxide for masterbatch. Background Technology

[0002] Color masterbatch is a colored resin granule containing a high proportion of pigments. It is mainly composed of three basic elements: pigments or dyes, carriers, and additives. The preparation of color masterbatch mainly includes processes such as grinding, phase inversion, water washing, drying, and granulation. During the production process, titanium dioxide needs to be added to improve the whiteness and brightness of the color masterbatch.

[0003] The excellent dispersibility of titanium dioxide can make the color of masterbatch uniform, resulting in consistent color and gloss in plastic products and improving their appearance quality. Existing titanium dioxide dispersibility testing devices generally use spectrophotometers, based on the Lambert-Beer law, to measure the light absorption of the titanium dioxide-containing system and determine its dispersion based on the absorbance. Typically, the tester takes a certain amount of titanium dioxide slurry from the stirring drum and tests it with a spectrophotometer. However, the dispersion of titanium dioxide slurry at different heights in the stirring drum may vary, leading to deviations in the titanium dioxide slurry dispersibility test. In view of this, we propose a titanium dioxide dispersibility testing device for masterbatch. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for detecting the dispersibility of titanium dioxide for masterbatch. The technical problem to be solved by the present invention is that the dispersion of titanium dioxide slurry at different heights in the stirring drum may be different, which leads to deviation in the detection of the dispersibility of titanium dioxide slurry.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for detecting the dispersibility of titanium dioxide in masterbatch includes a base, a stirring cylinder fixedly mounted on the top surface of the base, multiple feed pipes fixedly and connected to the outside of the stirring cylinder, each feed pipe being at a different height, a solenoid valve mounted on each feed pipe, a water pump fixedly mounted on the top surface of the base, each feed pipe being connected to the water pump via a connecting pipe, a detection cylinder fixedly and connected to the outside of the water pump, a spectrophotometer fixedly mounted on the top surface of the base, a detection head mounted on the spectrophotometer and fitted onto the outside of the detection cylinder, a reflux pipe fixedly and connected to the top of the detection cylinder, and the other end of the reflux pipe being connected to the stirring cylinder.

[0007] A stirring shaft is rotatably connected inside the stirring drum. A lifting mechanism is provided at the top of the stirring drum, and the lifting mechanism drives the stirring shaft to rotate while sliding up and down. Multiple stirring rods are symmetrically rotatably connected to the outside of the stirring shaft. An angle adjustment mechanism is provided inside the stirring shaft, and the rotation angle of each stirring rod can be adjusted by the angle adjustment mechanism.

[0008] like Figure 1-5 As shown, the specific implementation method is as follows: By setting up multiple feed pipes, solenoid valves, water pumps, connecting pipes, detection cylinders, detection heads, spectrophotometers, etc., the feed pipes at different heights are connected to the connecting pipes through the solenoid valves. This allows the water pump to draw titanium dioxide slurry at different heights into the detection cylinder each time. Then, the spectrophotometer can detect the dispersion of the slurry in the detection cylinder through the detection head. By detecting at different heights multiple times, the accuracy of the detection can be ensured. At the same time, the detection can be dynamically detected during the stirring process, which can reflect the dispersion state at different stages in real time and adjust the stirring parameters in a timely manner. Through the stirring rod and angle adjustment mechanism, the rotation angle of the stirring rod can be changed. The angle can be adjusted according to different stirring requirements, thereby adjusting the flow pattern and shear force distribution of the stirring, so as to better disperse the titanium dioxide slurry, improve the stirring efficiency and uniformity, reduce the "dead zone" in the stirring cylinder, and make the titanium dioxide more evenly dispersed in the entire stirring cylinder. By setting up a lifting mechanism, the stirring shaft can slide up and down while rotating, thereby enhancing the stirring effect and making the titanium dioxide more evenly stirred.

[0009] In a preferred embodiment, the lifting mechanism includes a first dual-axis motor. The bottom output shaft of the first dual-axis motor passes through the stirring drum and is fixedly mounted with a square block, which is slidably connected inside the stirring shaft. The top output shaft of the first dual-axis motor is connected to a reciprocating lead screw. A lead screw sleeve is threaded onto the reciprocating lead screw. A plurality of push rods are symmetrically mounted on the bottom end of the lead screw sleeve. One end of each push rod passes through the stirring drum and is mounted with a lifting plate. Each lifting plate is locked on the outside of the stirring shaft.

[0010] In a preferred embodiment, the angle adjustment mechanism includes multiple sprockets, each sprocket being mounted on one end of a stirring rod at a corresponding position. The multiple sprockets on the same side are all fitted with a chain, and each chain meshes with the sprocket at the corresponding position.

[0011] In a preferred embodiment, a second dual-shaft motor is fixedly installed on the bottom wall of the stirring shaft, and the output shafts at both ends of the second dual-shaft motor are connected to the stirring rods corresponding to the positions.

[0012] In a preferred embodiment, an arc-shaped groove is provided on the outer side of the stirring shaft, and one end of each lifting plate is arc-shaped, with the arc-shaped end of each lifting plate being engaged in the arc-shaped groove.

[0013] In a preferred embodiment, a square groove is provided inside the stirring shaft, and each side of the square block is in contact with the side wall of the square groove.

[0014] In a preferred embodiment, a baffle is fixedly installed at the end of the reciprocating screw away from the first dual-axis motor, and the diameter of the baffle is greater than the diameter of the reciprocating screw.

[0015] In a preferred embodiment, the top end of the mixing drum is fixed and connected to a feed pipe, and the bottom end of the mixing drum is fixed and connected to a discharge pipe.

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

[0017] 1. This utility model, by setting up multiple feed pipes, solenoid valves, detection cylinders, spectrophotometers, reflux pipes and other devices, realizes the purpose of extracting titanium dioxide slurry of different heights into the detection cylinder by starting a water pump, and then detecting it by a spectrophotometer. Thus, by detecting at different heights multiple times, the accuracy of dispersion detection can be guaranteed.

[0018] 2. This utility model, by setting up a first dual-shaft motor, a square block, a reciprocating screw, a push rod, a lifting plate, a screw sleeve, and other devices, realizes that the first dual-shaft motor drives the stirring shaft to rotate while simultaneously adjusting the reciprocating screw to rotate. This, in turn, drives the lifting plate to slide back and forth through the screw sleeve, thereby pushing the stirring shaft to slide back and forth while rotating, thus ensuring the uniformity of stirring.

[0019] 3. This utility model, by setting up a second dual-shaft motor, sprocket, chain, stirring rod, and other devices, realizes the starting of the second dual-shaft motor, which causes the stirring rod to rotate. At the same time, through the cooperation of the sprocket and chain, each stirring rod rotates synchronously. This allows for easy adjustment of the rotation angle of the stirring rod according to different stirring requirements, thereby adjusting the flow pattern and shear force distribution of the stirring, thus better dispersing the titanium dioxide slurry and improving stirring efficiency and uniformity.

[0020] In summary, this invention is simple to operate and allows for multiple tests of the titanium dioxide slurry in the mixing drum at different heights, ensuring the accuracy of dispersibility testing. Simultaneously, while ensuring uniform mixing, the rotation angle of the stirring rod can be adjusted according to different mixing requirements, thereby adjusting the flow pattern and shear force distribution, thus better dispersing the titanium dioxide slurry and improving mixing efficiency and uniformity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a titanium dioxide dispersibility testing device for masterbatch proposed in this utility model;

[0022] Figure 2This is a schematic diagram of the installation structure of the detection cylinder of a titanium dioxide dispersibility testing device for masterbatch proposed in this utility model;

[0023] Figure 3 This is a cross-sectional view of the stirring cylinder of a titanium dioxide dispersibility testing device for masterbatch proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the lifting mechanism of a titanium dioxide dispersibility testing device for masterbatch proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the angle adjustment mechanism of a titanium dioxide dispersibility testing device for masterbatch proposed in this utility model.

[0026] In the diagram: 1. Base, 2. Mixing drum, 3. Feed pipe, 4. Solenoid valve, 5. Connecting pipe, 6. Water pump, 7. Spectrophotometer, 8. Return pipe, 9. Detection cylinder, 10. Detection head, 11. First dual-shaft motor, 12. Reciprocating screw, 13. Baffle, 14. Screw sleeve, 15. Push rod, 16. Mixing shaft, 17. Mixing rod, 18. Lifting plate, 19. Square block, 20. Square groove, 21. Arc groove, 22. Sprocket, 23. Chain, 24. Second dual-shaft motor. Detailed Implementation

[0027] 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.

[0028] Reference Figure 1-5 A device for detecting the dispersibility of titanium dioxide for masterbatch includes a base 1, a stirring cylinder 2 fixedly installed on the top surface of the base 1, multiple feed pipes 3 fixedly connected to the outside of the stirring cylinder 2, and each feed pipe 3 being at a different height, and each feed pipe 3 being equipped with a solenoid valve 4, a water pump 6 fixedly installed on the top surface of the base 1, each feed pipe 3 being connected to the water pump 6 through a connecting pipe 5, a detection cylinder 9 fixedly connected to the outside of the water pump 6, a spectrophotometer 7 fixedly installed on the top surface of the base 1, a detection head 10 installed on the spectrophotometer 7, and the detection head 10 being sleeved on the outside of the detection cylinder 9, a return pipe 8 fixedly connected to the top of the detection cylinder 9, and the other end of the return pipe 8 being connected to the stirring cylinder 2;

[0029] A stirring shaft 16 is rotatably connected inside the stirring drum 2. A lifting mechanism is provided at the top of the stirring drum 2. The lifting mechanism drives the stirring shaft 16 to rotate while sliding up and down. Multiple stirring rods 17 are symmetrically rotatably connected to the outside of the stirring shaft 16. An angle adjustment mechanism is provided inside the stirring shaft 16, and the rotation angle of each stirring rod 17 is adjusted by the angle adjustment mechanism.

[0030] It is worth noting that the spectrophotometer 7 is a mature existing technology, which mainly judges the dispersibility of titanium dioxide by measuring the degree of absorption of light of a specific wavelength by the titanium dioxide slurry. If the dispersion is uniform, the light absorption is relatively stable; if the dispersion is poor and there is agglomeration, the light absorption will change. Thus, the dispersion state of titanium dioxide in the slurry can be evaluated. At the same time, the titanium dioxide slurry after testing can be returned to the stirring drum 2 through the return pipe 8, reducing the waste of titanium dioxide slurry.

[0031] like Figure 1-5 As shown, the specific implementation method is as follows: By setting up multiple feed pipes 3, solenoid valves 4, water pumps 6, connecting pipes 5, detection cylinders 9, detection heads 10, spectrophotometers 7, etc., the feed pipes 3 at different heights are connected to the connecting pipes 5 through the solenoid valves 4. This allows the water pump 6 to draw titanium dioxide slurry at different heights into the detection cylinder 9 each time. Then, the spectrophotometer 7 can detect the dispersion of the slurry in the detection cylinder 9 through the detection head 10. By detecting at multiple different heights, the accuracy of the detection can be ensured. At the same time, this detection can be performed dynamically during the stirring process, which can realize... The stirring mechanism reacts to the dispersion state at different stages and adjusts the stirring parameters in a timely manner. The rotation angle of the stirring rod 17 can be changed through the stirring rod 17 and the angle adjustment mechanism. The angle can be adjusted according to different stirring requirements, thereby adjusting the flow pattern and shear force distribution of the stirring, so as to better disperse the titanium dioxide slurry, improve the stirring efficiency and uniformity, reduce the "dead zone" in the stirring drum 2, and make the titanium dioxide more evenly dispersed in the entire stirring drum 2. By setting a lifting mechanism, the stirring shaft 16 can slide up and down while rotating, thereby enhancing the stirring effect and making the titanium dioxide more evenly stirred.

[0032] The lifting mechanism includes a first dual-shaft motor 11. The bottom output shaft of the first dual-shaft motor 11 passes through the stirring cylinder 2 and is fixedly installed with a square block 19. The square block 19 is slidably connected inside the stirring shaft 16. The top output shaft of the first dual-shaft motor 11 is connected to a reciprocating screw 12. A screw sleeve 14 is threaded onto the reciprocating screw 12. Multiple push rods 15 are symmetrically installed at the bottom end of the screw sleeve 14. One end of each push rod 15 passes through the stirring cylinder 2 and is installed with a lifting plate 18. Each lifting plate 18 is locked on the outside of the stirring shaft 16.

[0033] It is worth noting that by engaging the square block 19 with the stirring shaft 16, the rotation of the square block 19 can drive the stirring shaft 16 to rotate. At the same time, multiple push rods 15 penetrate the stirring cylinder 2 to limit the screw sleeve 14, preventing it from rotating and allowing it to slide linearly. This, in turn, drives the stirring shaft 16 to slide up and down via the lifting plate 18.

[0034] The angle adjustment mechanism includes multiple sprockets 22, and each sprocket 22 is installed at one end of the stirring rod 17 corresponding to the position. Multiple sprockets 22 located on the same side are all fitted with chains 23, and each chain 23 meshes with the corresponding sprocket 22. It is worth noting that each sprocket 22 has multiple tooth roots on its outer side, which mesh with the sprocket 22. Thus, the rotation of one sprocket 22 can drive each sprocket 22 to rotate synchronously.

[0035] A second dual-shaft motor 24 is fixedly installed on the bottom wall of the stirring shaft 16, and the two output shafts of the second dual-shaft motor 24 are connected to the stirring rod 17 with corresponding positions. The second dual-shaft motor 24 can be a stepper motor, which can precisely control the rotation angle of the output shaft.

[0036] An arc-shaped groove 21 is provided on the outer side of the stirring shaft 16. One end of each lifting plate 18 is arc-shaped, and the arc-shaped end of each lifting plate 18 is locked in the arc-shaped groove 21.

[0037] A square groove 20 is provided inside the stirring shaft 16, and each side of the square block 19 is in contact with the side wall of the square groove 20.

[0038] A baffle 13 is fixedly installed at the end of the reciprocating screw 12 away from the first dual-axis motor 11, and the diameter of the baffle 13 is greater than the diameter of the reciprocating screw 12. The baffle 13 limits the screw sleeve 14 to prevent it from detaching from the baffle 13.

[0039] The top of the mixing drum 2 is fixed and connected to a feed pipe, and the bottom of the mixing drum 2 is fixed and connected to a discharge pipe.

[0040] When using this invention, the first dual-shaft motor 11 is started first. A square block 19 is installed on the bottom output shaft of the first dual-shaft motor 11, which drives the stirring shaft 16 to rotate. At the same time, the top output shaft of the first dual-shaft motor 11 drives the reciprocating screw 12 to rotate, so that the screw sleeve 14 slides back and forth. Through the setting of the push rod 15 and the lifting plate 18, the stirring shaft 16 is lifted back and forth, so that the stirring shaft 16 can move the stirring rod 17 to stir while sliding up and down to ensure the uniformity of stirring.

[0041] Next, the water pump 6 is started, and the titanium dioxide slurry at different heights is drawn into the detection cylinder 9 in batches through the feed pipe 3 by sequentially closing and opening the solenoid valves 4 at different positions. Then, the dispersion of the titanium dioxide slurry in the detection cylinder 9 is tested by the spectrophotometer 7 and the detection head 10. After the test is completed, the titanium dioxide slurry is returned to the stirring cylinder 2. Then, the slurry at different heights is drawn in sequence to complete the dispersion test, thereby ensuring the accuracy of the dispersion test.

[0042] Meanwhile, when the titanium dioxide dispersion is low, the second dual-shaft motor 24 can be started to drive the stirring rods 17 connected to the output shafts at both ends to rotate. At the same time, through the cooperation of the sprocket 22 and the chain 23, each stirring rod 17 can rotate synchronously, thereby changing the shear force of the stirring rod 17. This allows for adjustment of the angle according to different stirring requirements, thereby adjusting the flow pattern and shear force distribution of the stirring, thus better dispersing the titanium dioxide slurry and improving stirring efficiency and uniformity.

[0043] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for detecting the dispersibility of titanium dioxide in masterbatch, comprising a base (1), characterized in that: A stirring cylinder (2) is fixedly installed on the top surface of the base (1). Multiple feed pipes (3) are fixed and connected to the outside of the stirring cylinder (2), and each feed pipe (3) is at a different height. A solenoid valve (4) is installed on each feed pipe (3). A water pump (6) is fixedly installed on the top surface of the base (1). Each feed pipe (3) is connected to the water pump (6) through a connecting pipe (5). A detection cylinder (9) is fixed and connected to the outside of the water pump (6). A spectrophotometer (7) is fixedly installed on the top surface of the base (1). A detection head (10) is installed on the spectrophotometer (7), and the detection head (10) is sleeved on the outside of the detection cylinder (9). A return pipe (8) is fixed and connected to the top of the detection cylinder (9), and the other end of the return pipe (8) is connected to the stirring cylinder (2). The stirring drum (2) is rotatably connected to a stirring shaft (16). The top of the stirring drum (2) is provided with a lifting mechanism, which drives the stirring shaft (16) to rotate while sliding up and down. Multiple stirring rods (17) are symmetrically rotatably connected to the outside of the stirring shaft (16). An angle adjustment mechanism is provided inside the stirring shaft (16), and the rotation angle of each stirring rod (17) is adjusted by the angle adjustment mechanism.

2. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 1, characterized in that: The lifting mechanism includes a first dual-axis motor (11), the bottom output shaft of the first dual-axis motor (11) passes through the stirring cylinder (2) and is fixedly installed with a square block (19), and the square block (19) is slidably connected in the stirring shaft (16). The top output shaft of the first dual-axis motor (11) is connected to a reciprocating screw (12), and a screw sleeve (14) is threaded on the reciprocating screw (12). Multiple push rods (15) are symmetrically installed at the bottom end of the screw sleeve (14). One end of each push rod (15) passes through the stirring cylinder (2) and is installed with a lifting plate (18), and each lifting plate (18) is locked on the outside of the stirring shaft (16).

3. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 2, characterized in that: The angle adjustment mechanism includes multiple sprockets (22), and each sprocket (22) is installed at one end of the stirring rod (17) corresponding to the position. Multiple sprockets (22) located on the same side are all fitted with a chain (23), and each chain (23) meshes with the sprocket (22) corresponding to the position.

4. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 3, characterized in that: The bottom wall of the stirring shaft (16) is fixedly installed with a second dual-shaft motor (24), and the output shafts at both ends of the second dual-shaft motor (24) are connected to the stirring rod (17) with corresponding positions.

5. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 4, characterized in that: An arc-shaped groove (21) is provided on the outer side of the stirring shaft (16), and one end of each lifting plate (18) is arc-shaped, and the arc-shaped end of each lifting plate (18) is locked in the arc-shaped groove (21).

6. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 5, characterized in that: The stirring shaft (16) has a square groove (20) inside, and each side of the square block (19) is in contact with the side wall of the square groove (20).

7. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 6, characterized in that: A baffle (13) is fixedly installed at the end of the reciprocating screw (12) away from the first dual-axis motor (11), and the diameter of the baffle (13) is greater than the diameter of the reciprocating screw (12).

8. The device for detecting the dispersibility of titanium dioxide for masterbatch according to claim 7, characterized in that: The top end of the mixing drum (2) is fixed and connected to a feed pipe, and the bottom end of the mixing drum (2) is fixed and connected to a discharge pipe.

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