A raw material proportioning and mixing device

Abstract

The utility model relates to the technical field of paint production, and disclose a raw material proportioning mixing device, include: mixing barrel, the agitating structure, the agitating structure includes spindle, stirring rod, casing and impeller, the spindle is connected with the rotation of mixing barrel, and the top of mixing barrel is fixed with motor drive spindle, a plurality of stirring rods are fixedly installed to the spindle, the casing is fixedly installed with mixing barrel, the impeller is connected with the rotation of casing and is linked with the spindle, rotates through motor drive spindle, and spindle drives multiple stirring rods to agitate shearing material, and spindle will also drive the rotation of impeller, and the material in the extrusion casing is extruded through the rotation of impeller, and the material is sprayed from the spray port of casing, and the material in mixing barrel is sucked from the suction port, can make the vortex of the bottom center position of mixing barrel, promote the flowability of the material of mixing barrel center position, reduce the mixing dead angle, promote the mixing effect and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coating production technology, and in particular to a raw material proportioning and mixing device. Background Technology

[0002] To improve the corrosion resistance and durability of automotive parts, it is necessary to spray anti-corrosion primer coatings on the surface of the parts.

[0003] A search revealed a prior art paint mixing device (publication number: CN114870681B), belonging to the technical field of paint production equipment. It includes a paint cylinder, water pipes, a power mechanism, a feeding mechanism, a stirring mechanism, and a guiding mechanism. The power mechanism drives the feeding mechanism and the guiding mechanism to rotate. The feeding mechanism includes a feeding bucket and two feeding pipes. The stirring mechanism is mounted on the guiding mechanism and includes two symmetrically arranged stirring rods for cleaning the inner wall of the paint cylinder and stirring the paint inside. The guiding mechanism includes a central tube fixedly mounted on the paint cylinder. A rotating shaft is rotatably mounted inside the central tube. The first end of the rotating shaft is connected to the power mechanism, and the second end is fixedly connected to a vertical guide rod.

[0004] Existing technologies mainly achieve mixing by using a spindle to drive a stirring rod. However, the coating fluidity is poor in the center of the barrel. For primer coatings with multiple mixing ratios, the material tends to settle in the central area and is difficult to mix evenly with other components, affecting the uniformity and quality of the coating.

[0005] Therefore, we propose a raw material proportioning and mixing device. Utility Model Content

[0006] The present invention mainly addresses the technical problem of poor fluidity of coatings at the center of the mixing cylinder, and provides a raw material proportioning and mixing device.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a raw material proportioning and mixing device, comprising: A mixing cylinder, which forms a sealed tank, with several feed pipes fixedly installed at the top for feeding materials and a discharge pipe fixedly installed at the bottom for discharging materials. A stirring structure is set inside the mixing cylinder for mixing materials. The stirring structure includes a main shaft, stirring rods, a housing, and an impeller. The main shaft is rotatably connected to the mixing cylinder. A motor-driven main shaft is fixedly installed on the top of the mixing cylinder. Several stirring rods are fixedly installed on the main shaft. The housing is fixedly installed on the mixing cylinder. The impeller is rotatably connected to the housing and connected to the main shaft. The housing is provided with several spray nozzles. The impeller can draw materials into the housing and discharge them from the spray nozzles.

[0008] In a preferred embodiment of this utility model, the motor is fixedly installed at the center of the outer top surface of the mixing cylinder by a bracket, and the output shaft of the motor is connected to the main shaft by a coupling.

[0009] In a preferred embodiment of this utility model, the stirring rod is formed into an E-shaped cross-section, and the stirring rod is fixed to the main shaft by full welding.

[0010] In a preferred embodiment of this utility model, the housing forms a sealed cylinder, the impeller is rotatably mounted on the inner bottom surface of the housing via a bearing, and the main shaft is locked and fixed by a flange impeller.

[0011] In a preferred embodiment of this utility model, a circular intake port is provided at the top of the shell, and an injection port is provided on the circumferential surface of the shell and penetrates the shell.

[0012] In a preferred embodiment of this utility model, the agitation structure further includes a manifold and a flow guide, both of which are fixedly installed with the housing. The flow guide is used to guide the material into the housing, and the manifold is used to discharge the material from the injection port.

[0013] In a preferred embodiment of this utility model, the deflector is horn-shaped, with the smaller port of the deflector welded to the top of the shell, the deflector facing the intake port of the shell, and several manifolds welded to the outer wall of the shell, with the manifolds corresponding to the injection ports.

[0014] In a preferred embodiment of this invention, the agitation structure further includes a scraper, which is fixedly installed on the side wall of the agitator. The scraper can abut against the inner wall of the mixing cylinder and clean its inner wall.

[0015] This utility model provides a raw material proportioning and mixing device. It has the following beneficial effects: 1. This raw material proportioning and mixing device uses a motor to drive the main shaft to rotate. The main shaft drives multiple stirring rods to agitate and shear the materials. At the same time, the main shaft also drives the impeller to rotate. The impeller includes a disc with several integrally formed blades fixed on the top of the disc. The rotation of the impeller compresses the materials in the shell, and the materials are sprayed out from the spray port of the shell. The materials in the mixing cylinder are sucked in from the suction port, which can form a vortex at the bottom center of the mixing cylinder, promote the flow of materials in the center of the mixing cylinder, reduce mixing dead zones, and improve the mixing effect and efficiency.

[0016] 2. This raw material proportioning and mixing device guides the material in the mixing cylinder into the shell through the guide hood, ensuring the smooth entry of the material into the shell. Multiple manifolds distributed along the tangential direction of material flow can promote the discharge of material squeezed by the impeller. The resistance to material entry and exit is small, the spraying effect is good, and thus the mixing effect of the material is guaranteed.

[0017] 3. This raw material proportioning and mixing device can reduce the adhesion residue by scraping and cleaning the inner wall of the mixing cylinder with a scraper, promote material discharge, and reduce the amount of subsequent cleaning work. Attached Figure Description

[0018] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a schematic diagram of the internal structure of the mixing cylinder of this utility model; Figure 4 This is a three-dimensional view of the stirring structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the shell of this utility model.

[0019] Legend: 10. Mixing cylinder; 11. Feed pipe; 12. Discharge pipe; 20. Main shaft; 21. Stirring rod; 22. Shell; 23. Impeller; 24. Manifold; 25. Flow guide; 26. Scraper. Detailed Implementation

[0020] A raw material proportioning and mixing device, such as Figure 1 and Figure 2 As shown, it includes: Mixing cylinder 10, forming a sealed tank, with several feed pipes 11 for feeding fixedly installed on the top of the mixing cylinder 10, and discharge pipes 12 for discharging fixedly installed on the bottom of the mixing cylinder 10. like Figure 3 , Figure 4 and Figure 5 As shown, the stirring structure is set inside the cavity of the mixing cylinder 10 for mixing materials. The stirring structure includes a main shaft 20, stirring rods 21, a housing 22, and an impeller 23. The main shaft 20 is rotatably connected to the mixing cylinder 10. A motor-driven main shaft 20 is fixedly installed on the top of the mixing cylinder 10. Several stirring rods 21 are fixedly installed on the main shaft 20. The housing 22 is fixedly installed on the mixing cylinder 10. The impeller 23 is rotatably connected to the housing 22 and connected to the main shaft 20. The housing 22 is provided with several spray nozzles. The impeller 23 can suck the material into the housing 22 and discharge it from the spray nozzles. The motor is fixedly installed at the center of the outer top surface of the mixing cylinder 10 by a bracket. The output shaft of the motor is connected to the main shaft 20 by a coupling. The stirring rods 21 form rods with an E-shaped cross section. The stirring rods 21 are fixed to the main shaft 20 by full welding. The housing 22 forms a sealed cylinder. The impeller 23 is rotatably set on the inner bottom surface of the housing 22 by bearings. The main shaft 20 is locked and fixed by the flange impeller 23. In this scheme, the feed pipe 11 needs to be connected to a conveying pump for transporting materials. The raw materials for producing anti-corrosion coatings are fed into the feed pipe 11. The motor is connected to the power supply and control switch. The motor drives the main shaft 20 to rotate. The main shaft 20 drives multiple stirring rods 21 to agitate and shear the materials. At the same time, the main shaft 20 also drives the impeller 23 to rotate. The impeller 23 includes a disc with several integrally formed blades fixed on the top of the disc. The rotation of the impeller 23 squeezes the material in the housing 22. The material is sprayed out from the spray port of the housing 22. The material in the mixing cylinder 10 is sucked in from the suction port, which can form a vortex at the bottom center of the mixing cylinder 10, promote the flow of materials at the center of the mixing cylinder 10, reduce mixing dead zones, and improve mixing effect and efficiency.

[0021] like Figure 4 and Figure 5 As shown, a circular suction port is provided at the top of the shell 22, and the injection port is provided on the circumferential surface of the shell 22 and penetrates the shell 22. The agitation structure also includes a manifold 24 and a flow guide 25. Both the manifold 24 and the flow guide 25 are fixedly installed with the shell 22. The flow guide 25 is used to guide the material into the shell 22, and the manifold 24 is used to discharge the material discharged from the injection port. The flow guide 25 is funnel-shaped, and the smaller port of the flow guide 25 is welded to the top of the shell 22. The flow guide 25 is directly opposite the suction port of the shell 22. Several manifolds 24 are welded to the outer wall of the shell 22, and the manifolds 24 are distributed one-to-one with the injection ports. In this scheme, the material in the mixing cylinder 10 is guided into the housing 22 by the flow guide hood 25, ensuring the smooth entry of the material into the housing 22. The multiple manifolds 24 distributed along the tangential direction of the material flow can promote the discharge of the material squeezed by the impeller 23. The resistance to material entry and exit is small, the spraying effect is good, and thus the mixing effect of the material is guaranteed.

[0022] like Figure 4 As shown, the agitation structure also includes a scraper 26. The scraper 26 is fixedly installed on the side wall of the agitator 21. The scraper 26 can contact the inner wall of the mixing cylinder 10 and clean its inner wall. The scraper 26 is made of silicone. Scraping and cleaning the inner wall of the mixing cylinder 10 by the scraper 26 can reduce the adhesion residue, promote material discharge, and reduce the amount of subsequent cleaning work.

[0023] The working principle of this utility model is as follows: The feed pipe 11 needs to be connected to a conveying pump for transporting materials. The raw materials for producing anti-corrosion coatings are fed into the feed pipe 11. The motor is connected to a power supply and a control switch. The motor drives the main shaft 20 to rotate. The main shaft 20 drives multiple stirring rods 21 to agitate and shear the materials. At the same time, the main shaft 20 also drives the impeller 23 to rotate. The impeller 23 includes a disc with several integrally formed blades fixed on the top of the disc. The rotation of the impeller 23 squeezes the materials in the housing 22. The materials are sprayed out from the spray port of the housing 22. The materials in the mixing cylinder 10 are sucked in from the suction port, which can form a center position at the bottom of the mixing cylinder 10. A vortex promotes the flow of material at the center of the mixing cylinder 10. The material in the mixing cylinder 10 is guided into the housing 22 by the guide shroud 25, ensuring smooth material entry into the housing 22. Multiple manifolds 24 distributed tangentially along the material flow direction can promote the discharge of material squeezed by the impeller 23. The resistance to material entry and exit is small, and the spraying effect is good. The scraper 26 scrapes and cleans the inner wall of the mixing cylinder 10 to reduce adhesion residue. The mixed coating can be discharged from the discharge pipe 12. The discharge pipe 12 needs to be connected to a valve to control its opening and closing. It is suitable for the production and processing of anti-corrosion primer coatings for automotive chassis parts, and is suitable for application scenarios where multiple components need to be uniformly mixed.

[0024] Impeller 23 can be a centrifugal impeller, and its blades can adopt a backward-curved design to balance efficiency and shear force.

[0025] The direction of the injection nozzle is preferably tangential, so that it combines with the wall of the mixing cylinder 10 to form a strong vortex field, maximizing the movement of the material at the bottom center.

[0026] The suction inlet of housing 22 can be equipped with a filter or grid to prevent undispersed large pigment particles or impurities from entering the pumping circulation system and causing blockage or wear.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material proportioning and mixing device, characterized in that, include: Mixing cylinder (10), the mixing cylinder (10) forms a sealed tank, the top of the mixing cylinder (10) is fixedly installed with a plurality of feed pipes (11) for feeding materials, and the bottom of the mixing cylinder (10) is fixedly installed with a discharge pipe (12) for discharging materials. A stirring structure is set inside the cavity of the mixing cylinder (10) for mixing materials. The stirring structure includes a main shaft (20), stirring rods (21), a housing (22) and an impeller (23). The main shaft (20) is rotatably connected to the mixing cylinder (10). A motor-driven main shaft (20) is fixedly installed on the top of the mixing cylinder (10). Several stirring rods (21) are fixedly installed on the main shaft (20). The housing (22) is fixedly installed to the mixing cylinder (10). The impeller (23) is rotatably connected to the housing (22) and connected to the main shaft (20). The housing (22) is provided with several spray nozzles. The impeller (23) can suck the material into the housing (22) and discharge it from the spray nozzles.

2. The raw material proportioning and mixing device according to claim 1, characterized in that: The motor is fixedly installed at the center of the outer top surface of the mixing cylinder (10) by a bracket, and the output shaft of the motor is connected to the main shaft (20) by a coupling.

3. The raw material proportioning and mixing device according to claim 1, characterized in that: The stirring rod (21) is formed into an E-shaped rod body, and the stirring rod (21) is fixed to the main shaft (20) by full welding.

4. The raw material proportioning and mixing device according to claim 1, characterized in that: The housing (22) forms a sealed cylinder, the impeller (23) is rotatably mounted on the inner bottom surface of the housing (22) via a bearing, and the main shaft (20) is locked and fixed by the flange impeller (23).

5. The raw material proportioning and mixing device according to claim 1, characterized in that: The top of the housing (22) is provided with a circular inlet, and the jet outlet is provided on the circumferential surface of the housing (22) and penetrates the housing (22).

6. The raw material proportioning and mixing device according to claim 5, characterized in that: The agitation structure also includes a manifold (24) and a flow guide (25). Both the manifold (24) and the flow guide (25) are fixedly installed with the housing (22). The flow guide (25) is used to guide the material into the housing (22), and the manifold (24) is used to discharge the material discharged from the injection port.

7. The raw material proportioning and mixing device according to claim 6, characterized in that: The flow deflector (25) is horn-shaped. The smaller port of the flow deflector (25) is welded to the top of the housing (22). The flow deflector (25) is directly opposite the intake port of the housing (22). Several manifolds (24) are welded to the outer wall of the housing (22). The manifolds (24) are distributed one-to-one with the injection port.

8. The raw material proportioning and mixing device according to claim 1, characterized in that: The agitation structure also includes a scraper (26), which is fixedly installed on the side wall of the agitator (21). The scraper (26) can abut against the inner wall of the mixing cylinder (10) and clean its inner wall.

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