Self-circulation type emulsifying and dispersing device

Abstract

The utility model relates to the technical field of emulsifying machines, and particularly discloses a self-circulation type emulsifying and dispersing device which comprises an emulsifying kettle, a motor, an emulsifying shaft positioned in the emulsifying kettle, an emulsifying head rotor, an emulsifying head stator and an emulsifying paddle, the emulsifying head rotor is located below the emulsifying head stator and matched with the emulsifying head stator, the emulsifying shaft is located in the connecting rod, one end of the emulsifying shaft is connected with the motor, the other end of the emulsifying shaft penetrates through the emulsifying head stator and the emulsifying head rotor to be connected with the emulsifying paddle, a ball valve is installed at the bottom of the emulsifying kettle, and a groove is formed in the bottom in the emulsifying kettle. The emulsifying paddle is positioned in the groove, and an overflow port is formed in the upper part of the emulsifying kettle and is connected with a bottom ball valve through a pipeline. The device solves the problems of incomplete emulsification, non-uniform dispersion, blockage of a discharge pipe and the like due to the fact that materials are high in viscosity and easy to agglomerate in the material emulsification process and are led to the bottom of the kettle, and effectively improves the emulsification and dispersion effects of powder slurry.

Description

Technical Field

[0001] This utility model relates to the field of emulsifier technology for powder slurries, and specifically to a self-circulating emulsification and dispersion device. Background Technology

[0002] In everyday chemical plants, fine chemical industries, electronic pastes, powder coatings, and other fields, the materials used are all in the form of ultrafine powders, which need to be emulsified and dispersed in solvents to form a uniform slurry. Emulsifiers are typically used for emulsification and dispersion. The dispersion principle involves the emulsifier rotor rotating at high speed inside the emulsification vessel. Under the centrifugal force generated by the high-speed rotating rotor, the material is simultaneously drawn axially into the working chamber from the upper and lower feed areas of the working head, and dispersed under the high-speed shearing and crushing action of the emulsification cutter head. Through this repetitive process, the powder fineness is uniformly distributed and evenly dispersed in the solvent, achieving the required emulsification and dispersion.

[0003] Due to the high activation energy and strong activity between ultrafine powder particles, they are prone to agglomeration and clumping under capillary action. Larger powder particles tend to deposit at the bottom of the reactor and at the discharge port. Special slurries require the addition of colloidal solvents to increase viscosity. Due to the high viscosity, agglomeration, and clumping of the materials, some material deposits at the bottom of the emulsification reactor or adheres to the reactor wall. Material deposited at the bottom of the emulsification reactor forms a dead zone between the bottom and the ball valve, preventing sufficient shearing, crushing, and dispersion. Prolonged accumulation of powder at the bottom of the reactor clogs the ball valve, leading to difficulty in discharging, uneven dispersion of some materials, and severe agglomeration and clumping, which significantly affects subsequent classification, coating, and product quality.

[0004] Solving problems such as easy clumping of high-viscosity slurries, material settling at the bottom, sticking to the walls, and uneven emulsification and dispersion during the emulsification and dispersion of agglomerated powder materials is the key to improving the dispersion effect of powder slurries. Utility Model Content

[0005] To address the problems in the background art, this utility model provides a self-circulating emulsification and dispersion device, which can effectively improve the dispersion effect of powder slurry.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A self-circulating emulsification and dispersion device includes an emulsification tank, a motor, an emulsification shaft, an emulsification head rotor, an emulsification head stator, and an emulsification paddle located inside the emulsification tank. The emulsification head stator is connected to the motor base via a connecting rod. The emulsification head rotor is located below the emulsification head stator and cooperates with it. The emulsification shaft is located inside the connecting rod, with one end connected to the motor and the other end passing through the emulsification head stator and rotor to connect to the emulsification paddle. A ball valve is installed at the bottom of the emulsification tank, and a groove is installed at the bottom of the emulsification tank. The emulsification paddle is located in the groove. An external circulation pipe is connected to the emulsification tank, with one end connected to the upper part of the emulsification tank and the other end connected to the lower part of the emulsification tank.

[0008] Furthermore, the groove is welded to the bottom of the emulsification tank.

[0009] Preferably, the groove is a circular groove with a diameter of 100-200mm and a depth of 50-100mm.

[0010] Furthermore, a bottom cover is installed at the bottom of the groove, and the bottom cover is connected to the groove flange by bolts. The bottom cover has a 40-50mm quick-connect interface in the center, which is equipped with a quick-connect ball valve. The overflow port is connected to the bottom ball valve interface through a quick-connect hose.

[0011] Furthermore, the emulsifying kettle has an overflow port at the top, and one end of the external circulation pipe is connected to the overflow port of the emulsifying kettle, while the other end is connected to the quick-connect valve at the bottom of the emulsifying kettle.

[0012] Preferably, the emulsifying impeller employs a propeller blade.

[0013] Preferably, the gap between the emulsified impeller blade and the bottom of the groove is in the range of 1-3 mm.

[0014] Preferably, the emulsifying paddle rotates synchronously with the emulsifying head rotor, and the rotation speed is controlled by a frequency converter switch, with the rotation speed ranging from 0 to 3000 rpm, so that the slurry forms an axial movement within the groove.

[0015] Preferably, the emulsifying head stator is connected to the motor base via three connecting rods, which are detachable and connected to the base via screws.

[0016] Preferably, the emulsifying kettle is jacketed and cooled, with cooling water connected to the water inlet at the lower end of the jacket. The temperature of the emulsified slurry is controlled by the cooling water in the jacket, so that the temperature can be controlled during the emulsification process, thus avoiding the temperature rise caused by the high-speed operation of the emulsifier.

[0017] Preferably, for solvent slurries with high surface tension, high-speed stirring and emulsification can cause the slurry temperature to rise and air to enter the liquid, generating a large amount of foam and affecting normal operation. The emulsification kettle top cover is a dish-shaped end cap, which is fastened and sealed to the emulsification kettle with bolts. The emulsification kettle operates in a fully sealed state. When connected to a vacuum system, the emulsification kettle operates under vacuum, which has a good defoaming effect for easily foaming solutions.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] After the motor starts working, it drives the emulsifying shaft to rotate, which in turn causes the emulsifying paddle to rotate at high speed. A low-pressure zone is formed in the groove at the bottom of the emulsifying tank. The liquid at the bottom of the groove is drawn into the stator of the emulsifying head, and the slurry moves axially. Under the high-speed shearing of the rotor, it is discharged from the stator orifice. The slurry re-enters the bottom of the emulsifying tank through the overflow hole at the top of the emulsifying tank and the overflow pipe. Under the action of the emulsifying paddle, the slurry inside and outside the emulsifying tank forms a self-circulating system. Under the repeated shearing and emulsifying action of the emulsifying paddle and the rotor of the emulsifying head, the slurry forms a homogeneous emulsion. This device solves the problems of material agglomeration due to high material viscosity, resulting in material deposition at the bottom of the tank, incomplete emulsification, uneven dispersion, and blockage of the discharge pipe during the material emulsification process. It effectively improves the emulsification and dispersion effect of powder slurry. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 2 This is an enlarged structural diagram of the groove portion of this utility model.

[0022] In the diagram: 1. Emulsifying kettle; 2. Groove; 3. Bottom cover; 4. Emulsifying shaft; 5. Emulsifying head stator; 6. Emulsifying head rotor; 7. Connecting rod; 8. Emulsifying paddle; 9. Head cover; 10. Motor base; 11. Motor; 12. Ball valve; 13. Overflow port. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0024] like Figure 1 and Figure 2 As shown, the present invention provides a self-circulating emulsification and dispersion device, comprising an emulsification kettle 1, a groove 2, a bottom cover 3, an emulsification shaft 4, an emulsification head stator 5, an emulsification head rotor 6, a connecting rod 7, an emulsification paddle 8, a top cover 9, a motor base 10, and a high-speed motor 11.

[0025] The top of the emulsifying vessel 1 is equipped with a head cover 9, and the motor base 10 and the motor 11 are mounted on the head cover 9. The bottom of the emulsifying vessel 1 is equipped with a bottom cover 3, and the remaining devices are located inside the emulsifying vessel 1. Among them, the connecting rod 7 is installed between the motor base 10 and the emulsifying head stator 5, the emulsifying head rotor 6 cooperates with the emulsifying head stator 5, the emulsifying shaft 4 is located inside the connecting rod 7, one end of which is connected to the motor 11, and the other end passes through the emulsifying head stator 5 and the emulsifying head rotor 6 and is connected to the emulsifying paddle 8. The emulsifying paddle 8 is installed at the bottom of the emulsifying shaft 4 by bolts. The bottom of the emulsifying vessel 1 is equipped with a circular groove 2, and the emulsifying paddle 8 is located in the groove 2.

[0026] The bottom of the groove 2 is fitted with a bottom cover 3, which is connected to the groove flange by bolts. The bottom cover has a 40-50mm quick-connect interface in the center, which is fitted with a quick-connect ball valve 12. The emulsifying kettle 1 has an overflow port 13 at the top of the barrel, which is connected to the bottom ball valve 12 interface by a quick-connect hose.

[0027] Preferably, the emulsifying propeller 8 adopts a propulsion blade.

[0028] Preferably, the emulsifying tank 1 is jacketed and cooled, with cooling water connected to the water inlet at the lower end of the jacket. The temperature of the emulsified slurry is controlled by the cooling water in the jacket, so that the temperature can be controlled during the emulsification process, thus avoiding the temperature rise caused by the high-speed operation of the emulsifier.

[0029] Preferably, the top cover of the emulsifying kettle 1 is a disc-shaped head top cover, which is fastened and sealed to the emulsifying kettle by bolts. The emulsifying kettle works in a fully sealed state. When connected to a vacuum system, the emulsifying kettle works under vacuum, which has a good defoaming effect for easily foaming solutions.

[0030] Specific work process:

[0031] Material is added to the emulsifying tank 1 through the feed inlet. The emulsifying head rotor 6 is driven to rotate at high speed by the motor 11 and the emulsifying shaft 4. Under the high-speed shearing of the emulsifying head rotor 6, the material is broken and dispersed, and then sprayed out by the emulsifying head stator 5, emulsifying and dispersing within the emulsifying tank (conventional emulsifier working principle). Material deposited in the bottom groove 2 of the emulsifying tank 1 is drawn up by the high-speed rotation of the emulsifying paddle 8 and moved axially, entering the emulsifying head rotor 6 for shearing, emulsification, and dispersion. The slurry in the emulsifying tank 1 enters the bottom groove 2 from the upper overflow hole, and is drawn back into the emulsifying tank 1 from the bottom by the emulsifying paddle, entering the emulsifying head rotor 6 for shearing and emulsification. Self-circulation and continuous emulsification without dead zones are achieved inside and outside the tank, forming a homogeneous emulsion.

[0032] Emulsifying tank 1 can be used in series with other mixing tanks. The discharge port of the mixing tank is connected to the bottom of the emulsifying tank 1. The slurry in the mixing tank is pumped into the emulsifying tank through the high-speed rotation of the emulsifying paddle 8. No additional pipeline pump or other equipment is needed between the emulsifying tank 1 and the mixing tank. Material transfer and continuous circulation emulsification and dispersion can be achieved. The equipment is simple and easy to operate.

[0033] Compared with conventional emulsifiers, the slurry produced by the self-circulating emulsification and dispersion device of this invention is more thoroughly emulsified and evenly dispersed.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A self-circulating emulsification and dispersion device, comprising an emulsification tank, a motor, an emulsification shaft, an emulsification head rotor, an emulsification head stator, and an emulsification paddle located within the emulsification tank, wherein the emulsification head stator is connected to the motor base via a connecting rod, the emulsification head rotor is located below the emulsification head stator and cooperates with the emulsification head stator, the emulsification shaft is located within the connecting rod, one end of which is connected to the motor, and the other end passes through the emulsification head stator and the emulsification head rotor and is connected to the emulsification paddle, and a valve is installed at the bottom of the emulsification tank, characterized in that: The bottom of the emulsifying kettle is equipped with a groove, and the emulsifying slurry is located in the groove; an external circulation pipe is connected to the emulsifying kettle, one end of which is connected to the upper part of the emulsifying kettle, and the other end is connected to the lower part of the emulsifying kettle.

2. The self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The groove is a circular groove with a diameter of 100-200mm and a depth of 50-100mm.

3. The self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The bottom of the groove is fitted with a bottom cover, which is connected to the groove flange by bolts. The bottom cover has a 40-50mm quick-connect interface in the center, which is fitted with a quick-connect valve.

4. The self-circulating emulsifying and dispersing device as described in claim 3, characterized in that: The emulsifying kettle has an overflow port at the top. One end of the external circulation pipe is connected to the overflow port of the emulsifying kettle, and the other end is connected to the quick-connect valve at the bottom of the emulsifying kettle.

5. A self-circulating emulsifying and dispersing device as described in claim 1, 3, or 4, characterized in that: The valve is a ball valve.

6. The self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The gap between the emulsified impeller blade and the bottom of the groove is in the range of 1-3mm.

7. The self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The emulsifying paddle rotates synchronously with the emulsifying head rotor, and the rotation speed is controlled by a frequency converter switch. The rotation speed is between 0-3000 rpm, and the slurry forms an axial movement in the groove.

8. The self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The emulsifying head stator is connected to the motor base via three connecting rods, which are detachable and connected to the base via screws.

9. The self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The emulsifying kettle is jacketed and cooled, with cooling water connected to the water inlet at the lower end of the jacket. The temperature of the emulsion slurry is controlled by the cooling water in the jacket.

10. A self-circulating emulsifying and dispersing device as described in claim 1, characterized in that: The emulsifying kettle has a disc-shaped head cover, which is fastened and sealed to the emulsifying kettle with bolts. The emulsifying kettle operates in a fully enclosed state and is connected to a vacuum system.

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