Variable frequency dispersion machine for paint production

Abstract

The utility model relates to the technical field of paint production, and the specific field is a frequency conversion dispersion machine for paint production, in order to solve the prior art along the dispersion shaft axial does not have the speed difference, in the different dispersion stage from top to bottom cannot match different rotating speed, and the dispersion efficiency still has the space of promotion technical problem, input shaft links with upper stirring axle through reduction gear set, input shaft links with lower stirring axle through acceleration gear set, and upper stirring axle and lower stirring axle are rotatably connected to the top and bottom two walls of dispersion cylinder, and the dispersion blade is connected on the upper stirring axle and lower stirring axle, and input shaft passes through reduction, acceleration gear set and gives power to upper stirring axle and lower stirring axle respectively, and the upper stirring axle drives the dispersion blade to rotate at a slow rotating speed, guides the material downward to the shear zone, and the lower stirring axle drives the dispersion blade to rotate at a fast rotating speed, carries out fine dispersion, matches different rotating speed at different stages, makes dispersion effect and dispersion speed all have improvement.

Description

Technical Field

[0001] This utility model relates to the field of coating production technology, specifically to a variable frequency disperser for coating production. Background Technology

[0002] Traditional fixed-speed dispersers are gradually being replaced by variable-frequency dispersers because they cannot accurately match the low viscosity characteristics of water-based coatings. The latter, through flexible speed adjustment, can use low speeds in the premixing stage to avoid splashing, and switch to medium-to-high speeds in the main dispersion stage to achieve efficient shearing, perfectly adapting to the production needs of water-based coatings.

[0003] During variable frequency dispersion, the material near the liquid surface is mostly a preliminary solid-liquid mixture containing incompletely wetted solid particles. It has a high viscosity and is prone to splashing, making it more suitable for low speed and strong pushing to guide the material downward to the shear zone. The material near the bottom of the container has entered the fine dispersion stage and needs to break up particle agglomeration through high shear force, making it more suitable for high speed and strong shear. Although the existing variable frequency disperser can flexibly change speed, there is no speed difference along the dispersion axis. It cannot match different speeds in different dispersion stages from top to bottom, and there is still room for improvement in dispersion efficiency. Utility Model Content

[0004] This invention addresses the technical problem that existing technologies lack a speed difference along the dispersion axis, making it impossible to match different speeds at different dispersion stages from top to bottom, thus leaving room for improvement in dispersion efficiency. Therefore, this invention provides a variable frequency disperser for coating production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable frequency disperser for paint production, comprising: a disperser cylinder, with transmission grooves respectively provided on the top and bottom walls of the disperser cylinder; an input shaft rotatably connected to the top and bottom walls of the disperser cylinder; one end of the input shaft being connected to the output end of a motor; the motor being connected to a power supply via a frequency converter; a reduction gear set being provided in the upper transmission groove; an acceleration gear set being provided in the lower transmission groove; the input shaft being connected to an upper stirring shaft via the reduction gear set; the input shaft being connected to a lower stirring shaft via the acceleration gear set; the upper and lower stirring shafts being rotatably connected to the top and bottom walls of the disperser cylinder respectively; dispersion blades being connected to the upper and lower stirring shafts; multiple feed pipes being connected to the upper part of the disperser cylinder; and a drain pipe being connected to the lower part of the disperser cylinder, with a liquid valve provided in the drain pipe.

[0006] Preferably, two sealing covers are fastened to the outside of the transmission grooves at both ends of the dispersion cylinder, and the upper sealing cover is rotatably connected to the input shaft.

[0007] Preferably, the lower part of the upper stirring shaft is hollow, and the upper end of the lower stirring shaft is rotatably connected to the lower part of the upper stirring shaft.

[0008] Preferably, the dispersing blades include upper dispersing blades and lower dispersing blades. The diameter and tooth spacing of the upper dispersing blades are larger than those of the lower dispersing blades. Only one upper dispersing blade is connected to each upper stirring shaft at the same height. The upper dispersing blades are connected to the upper part of the input shaft, and the lower dispersing blades are evenly distributed around the circumference and connected to the lower stirring shaft. The lower dispersing blades are connected to the lower part of the input shaft.

[0009] Preferably, the height of the upper dispersion blades at the top of the input shaft is between the upper dispersion blades of the upper stirring shaft, and the lower dispersion blades at the bottom of the input shaft are at the same height as the lower dispersion blades of the lower stirring shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The input shaft transmits power to the upper and lower agitator shafts via a reduction and acceleration gear set. The upper agitator shaft drives the dispersing blades to rotate at a slower speed, guiding the material downwards to the shearing zone. The lower agitator shaft drives the dispersing blades to rotate at a faster speed for fine dispersion. Matching different speeds at different stages improves both the dispersion effect and the dispersion speed. Furthermore, the upper and lower dispersing blades have a speed difference with the dispersing blades on the middle input shaft, enhancing the shearing and dispersion effect.

[0012] The upper dispersing blade has a larger diameter and tooth spacing than the lower dispersing blade, which enhances the ability of the upper part to push and the lower part to shear, further improving the dispersing effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0016] In the diagram: Dispersion cylinder; transmission groove; input shaft; reduction gear set; acceleration gear set; upper stirring shaft; lower stirring shaft; feed pipe; drain pipe; sealing cover plate; upper dispersion blade; lower dispersion blade. Detailed Implementation

[0017] 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.

[0018] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] The following is in conjunction with the appendix Figure 1-3 This embodiment describes a variable frequency disperser for paint production, comprising: a disperser cylinder 1, with transmission grooves 2 on its top and bottom walls, and an input shaft 3 rotatably connected to the top and bottom walls of the disperser cylinder 1. One end of the input shaft 3 is connected to the output end of a motor, and the motor is connected to a power supply via a frequency converter. A reduction gear set 4 is provided in the upper transmission groove 2, and an acceleration gear set 5 is provided in the lower transmission groove 2. The input shaft 3 is connected to an upper stirring shaft 6 via the reduction gear set 4, and to a lower stirring shaft 7 via the acceleration gear set 5. The upper and lower stirring shafts 6 and 7 are rotatably connected to the top and bottom walls of the disperser cylinder 1, and dispersing blades are connected to the upper and lower stirring shafts 6 and 7. Multiple feed pipes 8 are connected to the upper part of the disperser cylinder 1, and a drain pipe 9 is connected to the lower part of the disperser cylinder 1, with a liquid valve provided in the drain pipe 9.

[0021] During dispersion, the motor output speed is changed by the frequency converter, and solid and liquid raw materials are injected into the dispersion cylinder 1 through the corresponding feed pipe 8. The motor drives the input shaft 3 to rotate, and the input shaft 3 transmits power to the upper stirring shaft 6 and the lower stirring shaft 7 respectively through the reduction gear set 4 and the acceleration gear set 5. The upper stirring shaft 6 drives the dispersion blades to rotate at a slower speed, guiding the material downward to the shearing zone. The lower stirring shaft 7 drives the dispersion blades to rotate at a faster speed for fine dispersion. Different speeds are matched at different stages to improve both the dispersion effect and the dispersion speed. In addition, the upper and lower dispersion blades and the dispersion blades on the middle input shaft have a speed difference, which enhances the shearing dispersion effect.

[0022] Two sealing covers 10 are fastened to the outside of the transmission grooves 2 at both ends of the dispersion cylinder 1. The upper sealing cover 10 is rotatably connected to the input shaft 3.

[0023] The sealing cover 10 is designed to facilitate lubrication and dust prevention.

[0024] The lower part of the upper stirring shaft 6 is hollow, and the upper end of the lower stirring shaft 7 is rotatably connected to the lower part of the upper stirring shaft 6.

[0025] The upper agitator 6 and the lower agitator 7 are connected concentrically to reduce vibration and extend their service life.

[0026] The dispersing blades include an upper dispersing blade 11 and a lower dispersing blade 12. The diameter and tooth spacing of the upper dispersing blade 11 are larger than those of the lower dispersing blade 12. Only one upper dispersing blade 11 is connected to different upper stirring shafts 6 at the same height. The upper dispersing blade 11 is connected to the upper part of the input shaft 3. The lower dispersing blades 12 are evenly distributed around the lower stirring shaft 7. The lower dispersing blades 12 are connected to the lower part of the input shaft 3.

[0027] The upper dispersing blade 11 has a larger diameter and tooth spacing than the lower dispersing blade 12, which enhances the ability of the upper part to push and the lower part to shear, further improving the dispersing effect.

[0028] The upper dispersion blade 11 at the top of the input shaft 3 is located between the upper dispersion blades 11 of the upper stirring shaft 6, and the lower dispersion blade 12 at the bottom of the input shaft 3 is at the same height as the lower dispersion blade 12 of the lower stirring shaft 7.

[0029] The upper dispersion blade 11 at the top of the input shaft 3 is located between the upper dispersion blades 11 of the upper stirring shaft 6. The upper axial shear is enhanced by the speed difference. The lower dispersion blade 12 at the bottom of the input shaft 3 is at the same height as the lower dispersion blade 12 of the lower stirring shaft 7, which increases the distribution density of the lower dispersion blade 12, enhances the fine shearing ability, and further improves the dispersion effect.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0032] Although embodiments of the 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 these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable frequency disperser for paint production, characterized in that: include: The dispersion cylinder (1) has transmission grooves (2) on its top and bottom walls respectively. The top and bottom walls of the dispersion cylinder (1) are rotatably connected to the input shaft (3). One end of the input shaft (3) is connected to the output end of the motor. The motor is connected to the power supply through a frequency converter. The upper transmission groove (2) is equipped with a reduction gear set (4), and the lower transmission groove (2) is equipped with an acceleration gear set (5). The input shaft (3) is connected to the upper stirring shaft (6) through the reduction gear set (4), and the input shaft (3) is connected to the lower stirring shaft (7) through the acceleration gear set (5). The upper stirring shaft (6) and the lower stirring shaft (7) are rotatably connected to the top and bottom walls of the dispersion cylinder (1) respectively. The upper stirring shaft (6) and the lower stirring shaft (7) are connected to the dispersion blades. The upper part of the dispersion cylinder (1) is connected to multiple feed pipes (8), and the lower part of the dispersion cylinder (1) is connected to a drain pipe (9). The drain pipe (9) is equipped with a liquid valve.

2. The variable frequency disperser for coating production according to claim 1, characterized in that: The upper and lower ends of the dispersion cylinder (1) are connected to two sealing covers (10) on the outside of the transmission groove (2). The upper sealing cover (10) is rotatably connected to the input shaft (3).

3. The variable frequency disperser for paint production according to claim 1, characterized in that: The lower part of the upper stirring shaft (6) is hollow, and the upper end of the lower stirring shaft (7) is rotatably connected to the lower part of the upper stirring shaft (6).

4. The variable frequency disperser for paint production according to claim 1, characterized in that: The dispersion blades include an upper dispersion blade (11) and a lower dispersion blade (12). The diameter and tooth spacing of the upper dispersion blade (11) are larger than those of the lower dispersion blade (12). Only one upper dispersion blade (11) is connected to different upper stirring shafts (6) of the same height. The upper dispersion blade (11) is connected to the upper part of the input shaft (3). The lower dispersion blade (12) is evenly distributed around the lower stirring shaft (7). The lower dispersion blade (12) is connected to the lower part of the input shaft (3).

5. A variable frequency disperser for coating production according to claim 4, characterized in that: The upper dispersion blade (11) of the upper part of the input shaft (3) is located between the upper dispersion blade (11) of the upper stirring shaft (6), and the lower dispersion blade (12) of the lower part of the input shaft (3) is at the same height as the lower dispersion blade (12) of the lower stirring shaft (7).

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