A paint stirrer

Abstract

A paint stirrer provided by the present invention includes a stirring container. A feeding port is provided at the top of the stirring container, the bottom is an inverted cone, and a blowing port is provided at the bottom end. A paint blocking body is provided above the blowing port. A paint conveying pipe is provided on one side of the stirring container and is connected to the blowing port. This device uses compressed air to push the paint to flow in the stirring container to achieve the function of paint stirring, greatly improving production efficiency, effectively reducing manual labor intensity and production costs, ensuring stable and controllable product quality, greatly shortening the equipment maintenance time, having no safety risks at the same time, and the device has low manufacturing cost, convenient operation, high working efficiency, and is safe and reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of paint stirring, and particularly relates to a paint stirrer. Background Art

[0002] When producing gray iron thin-walled parts such as cylinder blocks and water-cooled exhaust pipes, the iron mold coated with sand is prone to defects such as sand sticking, sintering, and vein patterns. Slight defects can be removed by cleaning and grinding, while severe ones can only be scrapped, and it is difficult to guarantee the appearance quality of the products. At most, the appearance rejection rate reaches about 70%. Coating the mold is a necessary task. Currently, the existing coating methods for iron mold coated with sand mainly include manual brushing and spraying.

[0003] Due to the complex external structure of cylinder blocks, the manual brushing method uses a hand-held pneumatic or electric stirrer to prepare the paint and adjust the process proportion, pour it into a small bucket, and stir and brush it at the work station. The manual coating efficiency is very low, the coating layer is difficult to control, the paint needs to be re-stirred and prepared after a long standing time, which seriously affects the production efficiency, and the coating consistency is relatively poor. The temperature of the iron mold coated with sand is high, and the alcohol-based paint volatilizes quickly during coating. The paint uses zircon powder paint. During use, in order to ensure the paint concentration, alcohol solvent is continuously added, resulting in cost waste; alcohol is a flammable substance, and using flammable substances in a high-temperature environment also poses a safety hazard; in terms of the working environment, even if there is an exhaust system installed on site, the volatilization of alcohol solvent still has a relatively large impact on the environment and affects the physical and mental health of employees.

[0004] Batch continuous production generally uses direct mechanical stirring and compression stirring. One way of direct mechanical stirring is: the motor or fan drives the rotating shaft, and the rotating shaft is then connected to the reamer. The reamer is in direct contact with the paint, and the rotation of the motor or fan directly or indirectly drives the reamer to rotate to achieve the purpose of cutting and stirring the paint; another way is: the motor drives the connecting rod, the connecting rod drives the plunger, the reciprocating movement of the plunger is hydraulic oil, and the hydraulic oil makes the diaphragm pump drum back and forth to achieve the purpose of stirring the paint. This stirring method is not suitable for the production mode with a small production volume, and the equipment manufacturing cost is high, and the maintenance is troublesome.

[0005] Compression stirring mainly separates the conveying liquid and the working liquid by a diaphragm. The movement of the diaphragm is generated by compressed air to produce positive and negative pressures, inhale and discharge the conveying liquid, and achieve the stirring purpose through the in-and-out extrusion method. This stirring method has relatively high requirements for pressure control and there are certain safety risks. At the same time, this method is also not suitable for the production mode with a small production volume. Summary of the Invention

[0006] In view of the above technical problems, the present invention provides a paint stirrer that can not only improve production efficiency, but also reduce production costs and improve the working environment. The specific solutions are as follows:

[0007] A paint stirrer, comprising a stirring container, wherein a feeding port is arranged at the top of the stirring container, the bottom is an inverted cone, a blowing port is arranged at the bottom end, a paint blocking body is arranged above the blowing port, and a paint conveying pipe is arranged on one side of the stirring container.

[0008] Further, the paint blocking body is connected to the inner bottom of the stirring container through a support column.

[0009] Further, the paint blocking body is a solid geometric body or a hollow geometric body.

[0010] Further, the bottom surface of the hollow geometric body near the stirring container is an open mouth.

[0011] Further, the geometric body is a cone, a cylinder or a square column.

[0012] Further, it includes an air compressor, and the air compressor is connected to the blowing port through a compressed air conveying pipe.

[0013] Further, it includes a spray gun, and the spray gun is connected to the paint conveying pipe.

[0014] A spraying method using a paint stirring container includes the following steps:

[0015] (4) Add paint into the stirring container;

[0016] (5) Input compressed air into the stirring container through the blowing port to evenly stir the paint in step (1);

[0017] (6) Use a spray gun to spray the stirred paint in step (2) on the iron mold coated with sand.

[0018] Further, the range of the compressed air is less than or equal to 0.5 Mpa.

[0019] Advantages of the present invention

[0020] 1. The present invention uses compressed air to push the paint to flow in the stirring container and the principle of gravity to achieve automatic stirring, greatly improving the production efficiency, effectively reducing the manual labor intensity and production cost, making the product quality stable and controllable, greatly shortening the equipment maintenance time, and having no safety risks at the same time.

[0021] 2. When using the paint stirring container of the present invention for paint spraying, the paint spraying time is reduced from about 3 minutes to 1 minute, and the production efficiency is increased by more than 60%; the number of personnel is reduced from 4 to 2, and the labor cost is reduced by half; originally, zirconium silicate powder paint was used for brushing manually, and after using this equipment, LF2008 water-based paint is used for spraying, and the paint cost is reduced by more than 60%, and the improvement effect is obvious. This equipment has low manufacturing cost, is easy to operate, has high working efficiency and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of a paint stirrer according to the present invention.

[0023] Figure 2 is Figure 1 usage state diagram of

[0024] In the figure:

[0025] 1. Stirring container; 101. Feeding port; 102. Blowing port; 103. Paint delivery pipe; 2. Compressed air machine; 3. Compressed air delivery pipe; 4. Spray gun; 5. Paint blocking body; 501: Support column; 6. Paint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will be further explained and described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the specific embodiments are only for explanatory purposes and are not used to limit the scope of the rights of the present invention.

[0027] As Figure 1 and Figure 2 shown, a specific embodiment of the present invention provides a paint stirrer, including a stirring container 1, a compressed air machine 2, a compressed air delivery pipe 3 and a spray gun 4. The top of the stirring container 1 is provided with a feeding port 101, and the bottom is an inverted cone. The function of the inverted cone is to make the precipitated paint 6 fully sink to the bottom of the stirring container 1 under the action of gravity, and obtain the gravity to redisperse the paint 6 through the compressed air blown in through the blowing port 102 to achieve the purpose of stirring. Preferably, the oblique angle of the inverted cone is 30 - 70 degrees.

[0028] The bottom end of the stirring container 1 is provided with a blowing port 102, and a paint blocking body 5 is arranged above the blowing port 102. The bottom of the paint blocking body 5 is connected to the bottom inside the stirring container 1 through a plurality of support columns 501. One side of the bottom of the stirring container 1 is provided with a paint delivery pipe 103. The compressed air machine 2 is connected to the blowing port 102 through the compressed air delivery pipe 3. Preferably, one end of the compressed air delivery pipe 3 is connected to the compressed air machine 2 and is arranged on one side of the top end of the stirring container 1, and the other end of the compressed air delivery pipe 3 is connected to the blowing port 102.

[0029] The paint blocking body 5 is a solid geometric body or a hollow geometric body. Preferably, the paint blocking body 5 is a regular cone. The regular cone is a hollow cavity or a solid body or has an open mouth near the bottom surface of the stirring container. The oblique angle of its cone is 45 - 80 degrees. Its functions are: first, the bottom of the regular cone can effectively block the paint 6 from hitting the top; second, it can make the sinking paint 6 more easily enter the blowing port 102; third, it can diffuse the compressed air blown into the bottom of the stirring container 1 to the surrounding of the stirring container 1, and the conical surface is more likely to obtain the compressed air shear that diffuses upward to stir the paint 6, so as to better control the uniformity of the paint 6 concentration.

[0030] The geometric body can also be a cylinder or a square column, and the cylinder or the square column is respectively a solid body, a hollow cavity, or the bottom of the near-stirring container is an open mouth.

[0031] One side of the bottom of the stirring container 1 is provided with a paint delivery pipe 103, and the spray gun 4 is connected to the paint delivery pipe 103. Preferably, both the compressed air delivery pipe 102 and the paint delivery pipe 103 are made of PVC pipes with high pipe strength and easy to control, and the spray gun 4 is a lotus brand suction-up spray gun.

[0032] Working principle:

[0033] Add the paint 6 into the stirring container 1 from the feeding port 101, and the air compressor 2 blows the compressed air into the stirring container 1 through the blowing port 102. The compressed air pushes the paint 6 to flow in the stirring container 1 to make the paint 6 evenly stirred, and use the spray gun 4 to spray the paint 6 on the iron mold with sand coating.

[0034] The spraying method using a paint stirring container includes the following steps:

[0035] (1) Add the paint 6 into the stirring container 1;

[0036] (2) The paint 6 in step (1) precipitates at the bottom of the stirring container 1 under the action of gravity. Input the compressed air into the stirring container 1. The paint 6 encounters the compressed air bubbles that expand upward. The compressed air bubbles continuously increase and are blocked and dispersed, and escape in different directions to make the gravity of the paint 6 float upward; the paint 6 moves in different directions under the action of surface tension, gravity and resistance, and the compressed air obtained by upward diffusion shears and stirs the paint 6 with each other to make the paint 6 evenly stirred;

[0037] (3) Use the spray gun 4 to spray the paint stirred evenly in step (2) on the iron mold with sand coating.

[0038] Preferably, the air pressure range of the compressed air is less than or equal to 0.5 Mpa. The purpose is that one is to adjust the stirring intensity by adjusting the size of the compressed air according to the air pressure valve. If the stirring intensity is too large, the paint 6 will roll violently, which is easy to cause problems such as paint 6 splashing and solvent volatilization being too fast, and it is easy to cause blockage of the spray gun 4 and uncontrolled coating, resulting in the need to frequently stop work to adjust the specific gravity of the paint 6, affecting production efficiency; the other is to prevent the compressed air from being too large during use or the compressed air passing through the precipitated paint 6 before each start-up, causing high-pressure impact on the top. The stirring intensity represents the violent degree of the paint 6 stirring and rolling. The paint 6 is LF2008 water-based paint.

[0039] Using the paint automatic stirring equipment of the above specific embodiments, the spraying time of the paint 6 is reduced from about 3 minutes to 1 minute, and the production efficiency is increased by more than 60%; the number of personnel is reduced from 4 to 2, and the labor cost is halved; originally, zircon powder paint was applied manually, and after this equipment uses LF2008 water-based paint for spraying, the paint cost is reduced by more than 60%, and the improvement effect is obvious. This equipment has low manufacturing cost, is easy to operate, has high working efficiency, and is safe and reliable.

Claims

1. A paint stirrer, characterized in that, It includes a stirring container, with a feeding port at the top of the stirring container, a bottom in the shape of an inverted cone, a blowing port at the bottom end, the included angle of the inclined surface of the inverted cone being 30 - 70 degrees, a coating blocking body being arranged above the blowing port, a coating conveying pipe being arranged on one side of the stirring container, the coating blocking body being connected to the inner bottom of the stirring container through a support column, the coating blocking body being a solid geometric body or a hollow geometric body, the bottom surface of the hollow geometric body near the stirring container being an open mouth, the geometric body being a cone with the top end facing upwards.

2. The paint stirrer according to claim 1, characterized in that, It includes a compressor, and the compressor is connected to the blowing port through a compressed air conveying pipe.

3. The paint stirrer according to claim 1, characterized in that, It includes a spray gun, and the spray gun is connected to the coating conveying pipe.

4. A spraying method using the paint stirrer according to any one of claims 1 to 3, characterized in that, It includes the following steps: (1) Add the coating into the stirring container; (2) Input compressed air into the stirring container through the blowing port to evenly stir the coating in step (1); (3) Use the spray gun to spray the coating stirred in step (2) onto the iron - type coated sand mold.

5. The stirring method of the paint stirrer according to claim 4, characterized in that, The air pressure range of the compressed air is less than or equal to 0.5 Mpa.

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