A dispersing device for water-based color paste production

Abstract

The utility model discloses a kind of water-based color paste production are scattered with device, it is related to paint technical field.The utility model includes dispersing kettle, kettle cover, jacket, powder hopper, scattering shaft and dispersing disc, the upper end of dispersing kettle is threadedly connected with kettle cover, the top center of kettle cover is fixed with dispersing motor, vacuum pump is fixed on the kettle cover of dispersing motor side, filter is fixed on the air suction end of vacuum pump, air pipe is fixed through the air inlet end of filter, and the end of air pipe away from filter penetrates kettle cover and extends into dispersing kettle;Scattering shaft is provided in dispersing kettle, and the outer periphery of scattering shaft is fixed with three dispersing discs distributed up and down.The utility model is scattered with device by setting dispersing kettle, kettle cover, scattering shaft, dispersing piece, vacuum pump, powder hopper, vibrating motor, solve the shear force of conventional mixing scattering structure insufficient, and easily corrode transmission part, color paste scattering is easy to produce a large number of bubbles and dust dispersion, and the problem that pigment powder is easy to cake when being added once.

Description

Technical Field

[0001] This utility model belongs to the field of coating related technology, and in particular relates to a dispersing device for the production of water-based pigment paste. Background Technology

[0002] Color pastes are semi-finished products made by dispersing pigments or pigments and fillers within paint. Those using pure oil as a binder are called oil-based color pastes. Those using resin paint as a binder are called resin-based color pastes. Pigment and filler pastes dispersed in water with added surfactants are called water-based color pastes. In the production process of water-based color pastes, it is necessary to disperse and mix water, various pigments, and various fillers to form the water-based color paste. However, the following drawbacks still exist in the actual dispersing operation: In the utility model patent with authorization announcement number CN 217288005 U, a dispersing device for the production of water-based pigment paste is disclosed. It starts a motor, and the output end of the motor drives the first vertical shaft and the first bevel gear to rotate. The first bevel gear drives the third bevel gear and the second bevel gear to rotate. The second bevel gear drives the second vertical shaft to rotate. The first vertical shaft and the second vertical shaft drive the first stirring rod and the second stirring rod to rotate, so as to fully mix and disperse various raw materials. Although the above patent can perform dispersing operations over a large area, it uses a bevel gear transmission method. In the dispersing operation of water-based pigment paste, there is a lack of lubrication, which makes it easy to corrode and the gears are easily jammed by pigment particles. The entire transmission and mixing process is not very reasonable. In addition, although the dispersing method of the stirring rod can mix, the corresponding shearing effect is generally poor, and it requires a long mixing time to disperse. Secondly, in the dispersing operation of water-based pigments, a large number of air bubbles are easily generated, and the addition of powder pigments can easily lead to dust dispersion, resulting in environmental pollution. The pigment uniformity is insufficient and the dispersion effect is slow. Finally, when adding pigments to break up the color paste, if all the pigments are added at once, it is easy to cause clumping, and it is difficult to break them up quickly, which reduces work efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a dispersing device for the production of water-based pigment pastes. By setting up a dispersing vessel, a vessel cover, a dispersing shaft, a dispersing plate, a vacuum pump, a powder hopper, and a vibration motor, it solves the problems of insufficient shear force in conventional stirring and dispersing structures, easy corrosion of transmission parts, easy generation of a large number of bubbles and dust during pigment paste dispersal, and easy agglomeration of pigment powder when added at one time.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a dispersing device for the production of water-based pigment paste, including a dispersing kettle, a kettle cover, a jacket, a powder hopper, a dispersing shaft and a dispersing disc. The upper end of the dispersing kettle is threaded with a kettle cover. A dispersing motor is fixed at the center of the top of the kettle cover. A vacuum pump is fixed on the kettle cover next to the dispersing motor. A filter is fixed at the suction end of the vacuum pump. An air pipe is fixed through the air inlet end of the filter, and the end of the air pipe away from the filter passes through the kettle cover and extends into the dispersing kettle. A jacket is fixed to the outer periphery of the dispersion vessel, and a powder hopper is fixed through the periphery of the dispersion vessel above the jacket. The dispersion vessel is equipped with a dispersing shaft, and three dispersing discs distributed vertically are fixed on the outer periphery of the dispersing shaft. The lower outer edge of the dispersion disk is fixed with a second serrated blade arranged in a ring array, the upper outer edge of the dispersion disk is fixed with a first serrated blade arranged in a ring array, and the middle outer edge of the dispersion disk is fixed with a blade arranged in a ring array.

[0005] Furthermore, the dispersion disk has through holes arranged in a ring array, and an inclined shearing blade is fixed on the dispersion disk above each through hole.

[0006] Furthermore, the output shaft of the dispersing motor passes through the kettle cover and is connected to the top of the dispersing shaft. A viewing window is fixed through the kettle cover on the front side of the dispersing motor. A feed pipe is fixed through the kettle cover on the side of the dispersing motor away from the filter. A cap is threaded onto the upper end of the feed pipe. An air valve is installed on the kettle cover on the front side of the feed pipe.

[0007] Furthermore, the inner bottom of the dispersion vessel is provided with an inclined slope, and a discharge pipe is fixedly installed through the lower part of the dispersion vessel near the slope. The discharge pipe passes through the jacket and extends out. The connection between the discharge pipe and the jacket is welded and sealed, and a valve is installed on the discharge pipe.

[0008] Furthermore, the outer periphery of the jacket is fixed with an outlet pipe and an inlet pipe distributed vertically, with the outlet pipe located above the inlet pipe.

[0009] Furthermore, the bottom of the powder hopper is designed with an inclined slope, and a vibration motor is fixed at the bottom of the powder hopper. A feed pipe is fixed through the upper end of the powder hopper, and equidistant material holes are opened on the end face of the powder hopper that extends into the dispersion kettle. A valve is installed on the feed pipe.

[0010] This utility model has the following beneficial effects: This invention solves the problems of insufficient shearing force and easy corrosion of transmission parts in conventional stirring and dispersing structures by setting up a dispersion tank, a tank cover, a dispersing shaft, and dispersing plates. When dispersing water-based pigments, water, water-based fillers, and other substances are first added to the dispersion tank, then the tank cover is closed, pigments are added using a powder hopper, and the dispersing shaft is rotated by a dispersion motor, thereby rotating each dispersing plate. This reduces the need for transmission shafts and transmission structures, thus reducing wear. Furthermore, the use of multiple dispersing discs of different heights allows for simultaneous shearing of materials in the upper, middle, and lower parts of the dispersion tank, resulting in better uniformity. The dispersing discs are equipped with a large number of saw blades, blades, and shearing plates, which can generate more efficient shearing force and greater flow rate, resulting in better material circulation within the dispersion tank and eliminating "dead zones".

[0011] This invention solves the problem of excessive air bubbles and dust escaping during pigment paste dispersion by setting up a dispersion vessel, a vessel lid, and a vacuum pump. The dispersion vessel is sealed with a vessel lid, and a vacuum pump is used to create a vacuum inside the vessel, forming a negative pressure. Under vacuum, air mixed in with the material and air bubbles generated by the reaction are effectively extracted, resulting in a dense and defect-free pigment paste. The negative pressure environment reduces the surface tension of the material, allowing the pigment powder to be wetted by the aqueous system more quickly and thoroughly, greatly shortening the dispersion time. Moreover, the entire process is a fully enclosed operation, preventing the escape and volatilization of pigment dust and solvent.

[0012] This invention solves the problem of clumping when pigment powder is added all at once by setting up a powder hopper and a vibrating motor. A fixed amount of powdered pigment is added to the powder hopper, and then the vibrating motor is used to make the pigment in the powder hopper vibrate slowly and slide down from the feed hole, so that it slides down into the dispersion vessel in a flowing sand-like manner. With the stirring of the water-based substance below, it is quickly mixed and dispersed, avoiding the clumping phenomenon caused by adding pigment all at once. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 A perspective view of a dispersing device for the production of water-based pigments; Figure 2 A cross-sectional view of a dispersing device for producing water-based pigments; Figure 3 Structural diagram of the vessel lid, dispersing shaft, and dispersing plate; Figure 4 This is a structural diagram of the dispersion vessel; Figure 5 This is a structural diagram of the dispersion sheet; Figure 6 This is a structural diagram of a powder hopper.

[0015] Figure label: 1. Dispersion vessel; 101. Discharge pipe; 2. Vessel cover; 201. Dispersion motor; 202. Feed pipe; 2021. Sealing cap; 203. Vacuum pump; 204. Filter; 205. Gas pipe; 206. Viewing window; 207. Gas valve; 3. Jacket; 301. Inlet pipe; 302. Outlet pipe; 4. Powder hopper; 401. Vibrating motor; 402. Feed pipe; 403. Material hole; 5. Dispersing shaft; 6. Dispersion disc; 601. Saw blade one; 602. Saw blade two; 603. Blade; 604. Through hole; 605. Shearing blade. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Please see Figure 1-6 As shown, this utility model is a dispersing device for the production of water-based pigment paste, including a dispersing vessel 1, a vessel cover 2, a jacket 3, a powder hopper 4, a dispersing shaft 5, and dispersing discs 6. The upper end of the dispersing vessel 1 is threadedly connected to the vessel cover 2. A dispersing motor 201 is fixed at the center of the top of the vessel cover 2. A vacuum pump 203 is fixed on the vessel cover 2 next to the dispersing motor 201. A filter 204 is fixed at the suction end of the vacuum pump 203. An air pipe 205 is fixed through the air inlet end of the filter 204, and the end of the air pipe 205 away from the filter 204 extends into the dispersing vessel 1 through the vessel cover 2. The dispersing shaft 5 is provided inside the dispersing vessel 1, and three dispersing discs 6 are fixed on the outer periphery of the dispersing shaft 5. The dispersion tank 1 serves as the main dispersing area for water-based pigments. The tank lid 2 is screwed on top to seal the tank, forming a closed operation. The dispersion motor 201 drives the dispersing shaft 5 to rotate, thereby driving each dispersion disc 6 to rotate. Multiple dispersion discs 6 of different heights are used to simultaneously shear the material in the upper, middle, and lower parts of the dispersion tank 1, resulting in better uniformity. Simultaneously, the vacuum pump 203 operates, connecting the dispersion vessel 1 through the filter 204 and the air pipe 205, extracting the gas inside the dispersion vessel 1 to form a negative pressure vacuum state. The filter 204 can filter out water vapor and dust in the air, preventing damage to the vacuum pump 203. Under vacuum conditions, air mixed in with the material and bubbles generated by the reaction are effectively extracted, resulting in a dense and defect-free pigment paste. The negative pressure environment reduces the surface tension of the material, allowing the pigment powder to be wetted by the aqueous system more quickly and thoroughly, greatly shortening the dispersion time. Moreover, the entire process is a fully enclosed operation, preventing the escape and volatilization of pigment dust and solvent. A jacket 3 is fixed to the outer periphery of the dispersion vessel 1, and a powder hopper 4 is fixed through the periphery of the dispersion vessel 1 above the jacket 3; an outlet pipe 302 and an inlet pipe 301 are fixed through the outer periphery of the jacket 3, and the outlet pipe 302 is located above the inlet pipe 301. The corresponding medium (hot or cold) is introduced into the jacket 3 through the inlet pipe 301 and then discharged from the outlet pipe 302 to form a circulation. The medium heats or cools the dispersion vessel 1. Since high-speed dispersion will generate a lot of heat, cooling water is usually introduced to prevent the water-based system from becoming unstable or the additives from becoming ineffective due to excessive temperature.

[0018] A second serrated blade 602 arranged in a ring array is fixed to the lower part of the outer edge of the dispersion disk 6, a first serrated blade 601 arranged in a ring array is fixed to the upper part of the outer edge of the dispersion disk 6, and a blade 603 arranged in a ring array is fixed to the middle part of the outer edge of the dispersion disk 6. The dispersion disk 6 has through holes 604 arranged in a ring array inside, and an inclined shearing blade 605 is fixed on the dispersion disk 6 above each through hole 604. When the dispersing disc 6 rotates, a large number of saw blades 601, 602, 603, and 605 on its surface will rotate at high speed, shearing the water-based pigment in the dispersing vessel 1, generating more efficient shearing force and greater flow rate, thus improving the material circulation in the dispersing vessel 1.

[0019] The output shaft of the dispersing motor 201 passes through the kettle cover 2 and is connected to the top of the dispersing shaft 5. A viewing window 206 is fixed through the kettle cover 2 on the front side of the dispersing motor 201. A feed pipe 202 is fixed through the kettle cover 2 on the side of the dispersing motor 201 away from the filter 204. A cap 2021 is threaded onto the upper end of the feed pipe 202. An air valve 207 is installed on the kettle cover 2 on the front side of the feed pipe 202. The viewing window 206 facilitates observation of the situation inside the dispersion vessel 1. The cover 2021 can be opened to add water-based media through the feed pipe 202, or it can be used for temporary cleaning by connecting water pipes. The air valve 207 can be opened after the dispersion is completed to make the air pressure inside and outside the dispersion vessel 1 the same.

[0020] The bottom of the dispersion vessel 1 is provided with an inclined slope. A discharge pipe 101 is fixedly installed in the dispersion vessel 1 near the lower part of the slope. The discharge pipe 101 passes through the jacket 3 and extends out. The connection between the discharge pipe 101 and the jacket 3 is welded and sealed. A valve is installed on the discharge pipe 101.

[0021] The ramp design facilitates smoother material discharge from the discharge pipe 101 during the discharge process, reducing residue. The opening and closing of the discharge pipe 101 is controlled by a valve.

[0022] The bottom of the powder hopper 4 is designed with an inclined slope, and a vibration motor 401 is fixed at the bottom of the powder hopper 4. A feed pipe 402 is fixed through the upper end of the powder hopper 4. The end face of the powder hopper 4 that extends into the dispersion kettle 1 is provided with equally spaced material holes 403. A valve is installed on the feed pipe 402. The feed pipe 402 is connected to an external pigment conveying pipe, and with the valve opening and closing, a certain amount of powder pigment is added into the powder hopper 4. Then, the vibration motor 401 is used to make the pigment in the powder hopper 4 vibrate slowly and slide down from the feed hole 403, so that it slides down into the dispersion vessel 1 in a flowing sand-like manner. With the stirring of the water-based substance below, it is quickly mixed and dispersed, avoiding the phenomenon of clumping caused by adding pigment all at once.

[0023] The specific working principle of this utility model is as follows: First, the dispersion vessel 1 serves as the main dispersing area for the water-based pigment. A lid 2 is screwed onto the top of the vessel to seal it. Then, the lid 2021 is opened, and water, water-based fillers, and other substances are added to the dispersion vessel 1 through the feed pipe 202. The lid 2021 is then closed. A vacuum pump 203 operates, connecting the dispersion vessel 1 through a filter 204 and an air pipe 205, extracting the gas inside the dispersion vessel 1 to create a negative pressure vacuum. The filter 204 filters out water vapor and dust from the air. Then, a dispersion motor 201 drives the dispersing shaft 5 to rotate, thereby rotating each dispersing disc 6. When the dispersing disc 6 rotates, a large number of saw blades 601, 602, 603, and 605 on its surface will rotate at high speed, shearing the water-based pigment in the dispersing vessel 1, which can generate more efficient shearing force and greater flow rate. At this time, the external pigment conveying pipe is connected through the feed pipe 402, and a certain amount of powder pigment is added to the powder hopper 4. The vibration motor 401 works, and the pigment in the powder hopper 4 vibrates slowly and gradually slides down from the feed hole 403, making it slide down into the dispersing vessel 1 in a flowing sand-like manner. With the stirring of the water-based substance below, it is quickly mixed and dispersed. After a period of time, the dispersion is completed. During this period, the corresponding cold medium is introduced into the jacket 3 through the inlet pipe 301. Due to the high-speed dispersion, a large amount of heat will be generated, which can prevent the water-based system from becoming unstable or the additives from failing due to excessive temperature. The medium is then discharged from the outlet pipe 302 to form a cycle. When discharging, open the air valve 207 to make the air pressure inside and outside the dispersion vessel 1 the same, and then discharge it from the discharge pipe 101.

[0024] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A dispersing device for producing water-based pigment paste, comprising a dispersing vessel (1), a vessel cover (2), a jacket (3), a powder hopper (4), a dispersing shaft (5), and a dispersing disc (6), characterized in that: The upper end of the dispersion vessel (1) is threaded with a vessel cover (2). A dispersion motor (201) is fixed at the center of the top of the vessel cover (2). A vacuum pump (203) is fixed on the vessel cover (2) next to the dispersion motor (201). A filter (204) is fixed at the suction end of the vacuum pump (203). An air pipe (205) is fixed through the air inlet end of the filter (204). The end of the air pipe (205) away from the filter (204) passes through the vessel cover (2) and extends into the dispersion vessel (1). A jacket (3) is fixed to the outer periphery of the dispersion vessel (1), and a powder hopper (4) is fixed through the periphery of the dispersion vessel (1) above the jacket (3). The dispersion vessel (1) is equipped with a dispersing shaft (5), and three dispersing discs (6) are fixed on the outer periphery of the dispersing shaft (5) and distributed vertically. The lower outer edge of the dispersion disk (6) is fixed with a second serrated blade (602) arranged in a ring array, the upper outer edge of the dispersion disk (6) is fixed with a first serrated blade (601) arranged in a ring array, and the middle outer edge of the dispersion disk (6) is fixed with a blade (603) arranged in a ring array.

2. The dispersing device for producing water-based pigment paste according to claim 1, characterized in that: The dispersion disk (6) has through holes (604) arranged in a ring array inside, and an inclined shearing blade (605) is fixed on the dispersion disk (6) above each through hole (604).

3. The dispersing device for producing water-based pigment paste according to claim 1, characterized in that: The output shaft of the dispersing motor (201) passes through the kettle cover (2) and is connected to the top of the dispersing shaft (5). A viewing window (206) is fixed through the kettle cover (2) on the front side of the dispersing motor (201). A feed pipe (202) is fixed through the kettle cover (2) on the side of the dispersing motor (201) away from the filter (204). A cap (2021) is threaded onto the upper end of the feed pipe (202). An air valve (207) is installed on the kettle cover (2) on the front side of the feed pipe (202).

4. The dispersing device for producing water-based pigment paste according to claim 1, characterized in that: The inner bottom of the dispersion vessel (1) is provided with an inclined slope. A discharge pipe (101) is fixed through the lower part of the slope of the dispersion vessel (1). The discharge pipe (101) passes through the jacket (3) and extends out. The connection between the discharge pipe (101) and the jacket (3) is welded and sealed. A valve is installed on the discharge pipe (101).

5. The dispersing device for producing water-based pigment paste according to claim 1, characterized in that: The outer periphery of the jacket (3) is fixed with an outlet pipe (302) and an inlet pipe (301) distributed vertically, and the outlet pipe (302) is located above the inlet pipe (301).

6. The dispersing device for producing water-based pigment paste according to claim 1, characterized in that: The bottom of the powder hopper (4) is designed with an inclined slope, and a vibration motor (401) is fixed at the bottom of the powder hopper (4). A feed pipe (402) is fixed through the upper end of the powder hopper (4). The end face of the powder hopper (4) that extends into the dispersion kettle (1) is provided with equally spaced material holes (403). A valve is installed on the feed pipe (402).

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