Premixing device for automobile coating production

Abstract

The utility model discloses a premixing device for automobile coating production, which belongs to the field of coating production and comprises a premixing tank provided with a premixing stirrer, the top of the premixing tank is respectively connected with a premixing pigment feeding pipe and a premixing filler feeding pipe, and the bottom of the premixing tank is connected with a premixing material discharging pipe. The side parts of the premixing tank are respectively connected with a premixing resin feeding pipe and a premixing solvent feeding pipe, the premixing pigment feeding pipe is connected with the first tubular screw conveyer, the premixing filler feeding pipe is connected with the second tubular screw conveyer, the top of the premixing tank is also connected with an air outlet pipe, and the air outlet pipe is connected with a vacuum pump. The premix produced by the utility model is good in uniformity.

Description

TECHNICAL FIELD

[0001] The utility model relates to paint production, and more particularly, to a kind of automobile paint production premixing device. BACKGROUND

[0002] Automobile paint is a kind of firmly covering on the surface of object, and it is a mixture for protection, decoration, sign and other special purposes. The paint is mostly with vegetable oil as main raw material in early stage, so it is called "paint", such as healthy and environment-friendly original ecological boiled tung oil. Whether it is traditional paint product with natural material as raw material or modern paint product with synthetic chemical product as raw material, it all belongs to organic chemical high polymer material, and the coating film formed belongs to high polymer compound type. According to modern prevailing classification of chemical products, paint belongs to fine chemical product. In essence, the production of paint is the process of dispersing pigment solid particles and filler particles into resin solution by external force to form a uniform fine suspension.

[0003] The existing automobile paint production is divided into the following steps: premixing, grinding, paint adjusting, filtering and packaging, wherein the pigment, filler, part of resin and solvent are preliminarily mixed in the premixing to form slurry, the slurry is ground to the required fineness to ensure uniform dispersion, the slurry after grinding is mixed with the remaining resin, solvent, additive and the like to adjust the final performance of the paint, and the filtering is to remove impurities and undispersed particles in the paint to ensure the purity and quality of the paint.

[0004] During premixing, the pigment and filler come from outside the premixing tank. In general, the pigment and filler are placed at a certain distance from the premixing tank, and they need to be moved from the placement site to the premixing tank by a certain way, and then enter the premixing tank through the feeding pipe. The existing method is to add the pigment and filler into respective hoppers, and then connect the feeding pipe to the discharge port of the hopper.

[0005] The existing feeding method has the following defects:

[0006] The particle size of pigment and filler is micron level, and the particle size is small. The pigment particles and filler particles are easy to aggregate, which leads to poor uniformity of slurry. UTILITY MODEL CONTENTS

[0007] In view of the above problems, the utility model provides an automobile paint production premixing device, and the premixing material produced by the automobile paint production premixing device has good uniformity.

[0008] The utility model provides an automobile coating production premixing device, including the premixing jar of premixing stirrer, the top of premixing jar is connected with premixing pigment feed pipe and premixing filler feed pipe respectively, the bottom is connected with premixing material discharge pipe, the side is connected with premixing resin feed pipe and premixing solvent feed pipe respectively, premixing pigment feed pipe is connected with first tubular screw conveyor, premixing filler feed pipe is connected with second tubular screw conveyor, the top of premixing jar is also connected with the outlet pipe, and the outlet pipe is connected with vacuum pump.

[0009] Optionally, the premixing resin feed pipe, the premixing solvent feed pipe are each equipped with a gear pump, and the premixing material discharge pipe is equipped with a slurry pump.

[0010] Optionally, the screw conveying mechanism of the first tubular screw conveyor is a metal material, and the screw conveying mechanism is installed on the ground through a plurality of metal supports.

[0011] Optionally, a gravity feeding device is arranged between the second tubular screw conveyor and the premixing filler feed pipe, the gravity feeding device comprises a box body and a scattering and gathering component, the box body encloses a cavity, a chute is connected to the middle of the bottom of the box body, the scattering and gathering component comprises a scattering and gathering shaft, a plurality of scattering and gathering rods are installed on the scattering and gathering shaft from top to bottom near the inlet position of the chute, a handle is connected to the other end of the scattering and gathering shaft, the handle is located above the box body, the second tubular screw conveyor discharge pipe of the second tubular screw conveyor enters the cavity from the top of the box body, and the lower end of the chute is connected to the premixing filler feed pipe.

[0012] Optionally, the length of the scattering and gathering rod gradually decreases from top to bottom.

[0013] Optionally, the gravity feeding device further comprises a sleeve, the sleeve is installed in the cavity, the upper end is connected to the inner wall of the top of the box body, and the scattering and gathering shaft penetrates through the sleeve.

[0014] Optionally, one side wall of the box body is composed of a transparent material.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The premixing material produced by the utility model has good uniformity, basically no aggregation phenomenon, and smooth material conveying. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 is the whole structure schematic diagram of the premixing device for automobile coating production of the utility model;

[0019] Figure 2 is the structure schematic diagram of the conveying mechanism of the first tubular screw conveyor of the utility model;

[0020] Figure 3 is the structure schematic diagram of the gravity feeding device of the utility model;

[0021] Mark 1, premixing tank, 10, premixing material discharge pipe, 11, premixing pigment feeding pipe, 12, premixing filler feeding pipe, 13, premixing resin feeding pipe, 14, premixing solvent feeding pipe, 15, screw conveying mechanism, 151, metal support, 152, metal thin rod, 16, gravity feeding device, 161, box, 162, cavity, 163, scattering and gathering part, 1631, scattering and gathering shaft, 1632, scattering and gathering rod, 1633, handle, 164, chute, 165, sleeve, 17, premixing stirrer, 18, air outlet pipe, 19, vacuum pump. DETAILED DESCRIPTION

[0022] In the description of the utility model, it is to be explained that, unless another explicit stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be indirectly connected through the intermediate medium, can be two element inside the intercommunication or two element's mutual action relation. For ordinary skilled in the art, the above-mentioned term can be understood according to the concrete meaning in the utility model.

[0023] In the description of the utility model, it is to be understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation to the utility model. In the description of the utility model, the meaning of "multiple" is two or more than two, unless another accurate and specific provision.

[0024] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application and above-mentioned drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of the terms so construed herein is merely for convenience and only to aid in understanding the application and in no way define the scope of the application. It is also to be understood that the application is capable of other embodiments and that the use of the terms "comprise", "comprising", "including", "including", "having" and "contain", "containing" and any variations thereof, is not intended to exclude other steps, elements or units from the processes, methods, articles, devices and systems described herein.

[0025] For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0026] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments.

[0027] Please refer to Figures 1-3 , Figure 1 is a schematic diagram of the overall structure of the automobile paint production premixing device provided by the present application, Figure 2 is a schematic diagram of the structure of the conveying mechanism of the first tubular screw conveyor, Figure 3 is a schematic diagram of the structure of the gravity feeding device.

[0028] An automobile paint production premixing device comprises a premixing tank 1 provided with a premixing stirrer 17, the top of the premixing tank 1 is connected with a premixing pigment feeding pipe 11 and a premixing filler feeding pipe 12 respectively, the bottom is connected with a premixing material discharging pipe 10, and the side is connected with a premixing resin feeding pipe 13 and a premixing solvent feeding pipe 14 respectively, the premixing pigment feeding pipe 11 is connected with a first tubular screw conveyor, and the premixing filler feeding pipe 12 is connected with a second tubular screw conveyor, the top of the premixing tank 1 is further connected with a gas outlet pipe 18, and a vacuum pump 19 is connected to the gas outlet pipe 18.

[0029] The premixing resin feeding pipe 13 and the premixing solvent feeding pipe 14 are respectively provided with gear pumps, and the premixing material discharging pipe 10 is provided with a slurry pump, which conveys the premixed slurry to a grinding device for grinding.

[0030] In production, the first tubular screw conveyor and the second tubular screw conveyor each feed pigments and fillers into the premixing tank 1, the premixed resin feeding pipe 13 and the premixed solvent feeding pipe 14 feed resin and solvent into the premixing tank 1 respectively, and the mixture is mixed while being fed, when the premixing tank 1 meets the requirements, the valve installed on the premixing material discharging pipe 10 is opened, and the slurry pump installed on the premixing material discharging pipe 10 transports the slurry to the grinding device.

[0031] In premixing, the premixing tank 1 is premixed under negative pressure by the vacuum pump 19, under negative pressure, the pigments or fillers are sucked into the inner cavity of the premixing tank 1, the flow efficiency of the pigments or fillers is accelerated, and the powder conveying is smooth.

[0032] When the pressure in the premixing tank 1 increases and the gas increases, the vacuum pump is opened until the premixing tank 1 is mixed under negative pressure, at this time, the vacuum pump is closed.

[0033] In production, if an additive is needed, the additive enters from the premixed solvent feeding pipe 14.

[0034] In one or more specific embodiments of the utility model, in order to reduce the aggregation of pigment particles, according to the characteristics (strong electrostatic adsorption) of the pigment particles, the spiral conveying mechanism 15 of the first tubular screw conveyor is made of metal material, the spiral conveying mechanism 15 is installed on the ground through a plurality of metal supports 151, and adjacent two metal supports 151 are equidistantly provided with metal thin rods 152. The metal supports 151 and the metal thin rods 152 eliminate static electricity generated in the conveying process, and avoid the aggregation of pigment particles.

[0035] In one or more specific embodiments of the utility model, in order to reduce the aggregation of filler, and scatter the aggregated filler, according to the characteristics of the filler, the second tubular screw conveyor and premixed filler feeding pipe 12 between the gravity feeding device 16 is provided with, gravity feeding device 16 includes box 161 and scattering aggregation component 163, box 161 surrounds cavity 162, box 161 bottom middle position is connected with the slide pipe 164, scattering aggregation component 163 includes scattering aggregation shaft 1631, scattering aggregation shaft 1631 is adjacent to the inlet position of slide pipe 164 from top to bottom is equipped with a plurality of scattering aggregation bar 1632, scattering aggregation shaft 1631 other end is connected with handle 1633, handle 1633 is located above box 161, the second tubular screw conveyor of second tubular screw conveyor discharge pipe from the top of box 161 enters cavity 162, the lower end of slide pipe 164 is connected with premixed filler feeding pipe 12. The filler from the second tubular screw conveyor discharge pipe, under the action of gravity falls into cavity 162, after falling, under the action of gravity from slide pipe 164 falls into premixed filler feeding pipe 12. When not need to scatter, handle 1633 is placed on the bracket located at the top of box 161, when need to scatter, handle 1633 is taken off from the bracket, removes the bracket, rotates scattering aggregation shaft 1631, can scatter the aggregated block.

[0036] In one or more specific embodiments of the utility model, in order to obtain better scattering effect, the length of scattering aggregation bar 1632 is gradually shorter from top to bottom.

[0037] In one or more specific embodiments of the utility model, in order to prevent scattering aggregation shaft 1631 from deviating, gravity feeding device 16 further includes sleeve 165, sleeve 165 is installed in cavity 162, and the upper end is connected to the inner wall at the top of box 161, and scattering aggregation shaft 1631 passes through sleeve 165.

[0038] In one or more specific embodiments of the utility model, in order to find out whether there is caking phenomenon in time, one side wall of box 161 is composed of transparent material.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model.

Claims

1. An automobile paint production premixing device, comprising a premixing tank (1) provided with a premixing stirrer (17), a premixing pigment feeding pipe (11) and a premixing filler feeding pipe (12) connected to the top of the premixing tank (1) respectively, a premixing material discharging pipe (10) connected to the bottom of the premixing tank (1), and a premixing resin feeding pipe (13) and a premixing solvent feeding pipe (14) connected to the side of the premixing tank (1) respectively, characterized in that, The premixed pigment feeding pipe (11) is connected with a first tubular screw conveyor, the premixed filler feeding pipe (12) is connected with a second tubular screw conveyor, the top of the premixing tank (1) is further connected with an air outlet pipe (18), and the air outlet pipe (18) is connected with a vacuum pump (19).

2. The automobile coating production pre-mixing device according to claim 1, characterized in that, The premixed resin feeding pipe (13) and the premixed solvent feeding pipe (14) are respectively provided with gear pumps, and the premixing material discharging pipe (10) is provided with a slurry pump.

3. The automobile paint production pre-mixing device according to claim 1, wherein The screw conveying mechanism (15) of the first tubular screw conveyor is made of metal material, the screw conveying mechanism (15) is installed on the ground through a plurality of metal supports (151), and metal thin rods (152) are arranged at equal intervals between adjacent two metal supports (151).

4. The automobile paint production pre-mixing device according to claim 1, wherein The second tubular screw conveyor is provided with a gravity feeding device (16) between the premixed filler feeding pipe (12), the gravity feeding device (16) comprises a box body (161) and a scattering and gathering component (163), the box body (161) surrounds a cavity (162), a chute (164) is connected to the middle position of the bottom of the box body (161), the scattering and gathering component (163) comprises a scattering and gathering shaft (1631), a plurality of scattering and gathering rods (1632) are installed from top to bottom near the inlet position of the chute (164), one end of the scattering and gathering shaft (1631) is connected with a handle (1633), the handle (1633) is located above the box body (161), the second tubular screw conveyor discharging pipe of the second tubular screw conveyor enters the cavity (162) from the top of the box body (161), and the lower end of the chute (164) is connected with the premixed filler feeding pipe (12).

5. The automobile coating production pre-mixing device according to claim 4, wherein, The length of the scattering and gathering rod (1632) gradually decreases from top to bottom.

6. The automobile paint production pre-mixing apparatus according to claim 4, wherein The gravity feeding device (16) further comprises a sleeve pipe (165), the sleeve pipe (165) is installed in the cavity (162), the upper end is connected to the inner wall of the top of the box body (161), and the scattering and gathering shaft (1631) penetrates through the sleeve pipe (165).

7. The automobile paint production pre-mixing device according to claim 4, wherein The side wall of the box body (161) is made of transparent material.

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