CN220900700U - Spraying device for two-component paint - Google Patents

Abstract

The utility model discloses a spraying device of a two-component coating, which relates to the field of spraying and comprises a mixing cavity, wherein at least one group of mixing nozzles are arranged in the mixing cavity, each mixing nozzle comprises a first nozzle and a second nozzle, the first nozzle is used for spraying a first component into the mixing cavity, and the second nozzle is used for spraying a second component into the mixing cavity; the injection direction of the first nozzle has an included angle with the injection direction of the second nozzle. The first component of the device is injected into the mixing cavity and is directly impacted by the transverse sweeping of the second component, the mixing and stirring conditions are superior, and the stirring stability is better. The four first nozzles respectively perform pairwise opposite injection on four corners in the mixing cavity to form four-corner material jet flow, so that the mixing of the first component and the second component can be enhanced, and the atomization stirring is enhanced; the material particles in the mixing cavity can be impacted, so that the inside of the material is decomposed, and the material particles are easier to atomize and fuse.

Description

Spraying device for two-component paint

Technical Field

The utility model relates to the field of spraying, in particular to a spraying device for a double-component coating.

Background

The double-component spraying equipment is A, B-component paint, and is used in spraying operation or spraying main liquid material and curing agent in certain proportion to reach optimal coating effect. The two-component spraying equipment is divided into an air spraying machine, a high-pressure airless spraying machine, an air-assisted airless spraying device, a low-flow medium-pressure spraying device, an airless spraying machine and an electrostatic spraying machine according to different mixing ratios of the two-component coating and different curing time after mixing.

The spraying machine adopts a pneumatic hydraulic booster pump, the reversing mechanism enters compressed air, and when the piston moves to the upper end part or the lower end part of the cylinder, the upper pilot valve or the lower pilot valve acts, and the air flow is controlled to instantly push the air distribution reversing device to reverse, so that the piston of the pneumatic motor can perform stable continuous reciprocating motion. The piston is rigidly connected with the plunger in the paint plunger pump, and the area of the piston is larger than that of the plunger, so that the sucked paint is pressurized, the pressurized paint is conveyed to the airless spray gun through the high-pressure hose, finally, the hydraulic pressure is released at the airless spray nozzle, and the paint is sprayed to the surface of a coated object after instantaneous atomization, so that a coating film layer is formed.

At present, when the inside mixing chamber of two ingredient spraying device mixes, when spray gun blending bunker structure is complicated, the mixed material velocity of flow resistance is big, and the material mixing is more even, but adhesion caking and jam are easy, and live time is shorter. When the spray gun mixing bunker simple structure, the mixed material velocity of flow resistance is little, and the velocity of flow is fast, has solved adhesion caking and the jam problem in the spray gun, and live time is longer, but the material mix is inhomogeneous, and the mixed structure of various spray guns is all welded on the rifle body moreover, is inconvenient for dismouting and washing.

Disclosure of utility model

The utility model aims to provide a spraying device for a two-component coating, wherein when a first component is injected into a mixing cavity, the first component is impacted by a second component, so that the uniformity of mixing and stirring is improved.

The purpose is realized by adopting the following technical scheme: the mixing device comprises a mixing cavity, wherein at least one group of mixing nozzles are arranged in the mixing cavity, the mixing nozzles comprise a first nozzle and a second nozzle, the first nozzle is used for spraying a first component into the mixing cavity, and the second nozzle is used for spraying a second component into the mixing cavity; the jet direction of first nozzle has the contained angle with the jet direction of second nozzle, and when first component penetrated into the mixing chamber, received the impact effect of second component, not only can improve the mixing effect, and stirring stability is better.

Preferably, the first nozzle is connected to a first high-pressure pump, and the second nozzle is connected to a second high-pressure pump. The first high pressure pump and the second high pressure pump pressurize the first component and the second component, respectively, forming an atomizing gas stream at the first nozzle and the second nozzle.

Preferably, the injection direction of the first nozzle is towards the centre of the mixing chamber. The center of the mixing chamber refers to the center of the cross section of the mixing chamber.

Compared with the existing air spraying, the device has even paint surface and no granular feel. The paint is dry and clean because of being isolated from air. When the device is used for the construction of high-viscosity paint, the edge is clear, and the device can be even used for some spraying projects with boundary requirements.

Preferably, the included angle is 90 degrees, and the second component vertically impacts on the first component, thereby improving the contact area and the mixing efficiency.

The material particles in the mixing cavity are impacted, so that the inside of the material is quickened to decompose, and the material particles are easier to fuse.

Further, two groups of mixing nozzles are arranged in the mixing cavity, the first nozzles in the two groups of mixing nozzles are arranged oppositely, the spraying directions of the two first nozzles are opposite, and the two first nozzles spray out the first component oppositely. Furthermore, four groups of mixing nozzles are arranged in the mixing cavity, wherein the four groups of mixing nozzles are arranged in a pairwise opposite manner, and a four-angle material jet relation is formed. When mixing, two groups of materials are stirred through opposite impact at different angles, so that multistage atomization mixing stirring of materials is realized, the materials are fully mixed, the atomization mixing quality of the materials is improved, and the effect required by spraying is achieved. Meanwhile, the first component and the second component can form tangential rotation in the mixing cavity, and the tangential rotation and the inner wall of the mixing cavity form a certain distance, so that the material mixing cavity is limited in space jet flow, and the uniformity of the material in the mixing cavity can be better improved. In addition, the interaction of the four-angle material jet flow not only enhances the mixing of the first component and the second component, but also enhances the atomization stirring process; simultaneously, the material particles in the mixing cavity are impacted, so that the internal decomposition of the materials is quickened, and the materials are easier to atomize and fuse.

Preferably, the injection angle of the first nozzle is smaller than the injection angle of the second nozzle. The first nozzle is a narrow angle nozzle, which can generate a narrow angle fan-shaped spray with high impulse force, and the spray generated by the spray is uniformly distributed, has medium size and large and smooth passage, and reduces the blocking phenomenon to the greatest extent. The second nozzle is a wide-angle nozzle, can generate a wide-angle fan-shaped spray shape with medium impact force, and the sprayed liquid mist is uniformly distributed, has medium size and large and smooth channel, and furthest reduces the blocking phenomenon.

Furthermore, a turbocharger is arranged in the mixing cavity, an atomizing nozzle is arranged on the mixing cavity and connected with an exhaust pipe of the turbocharger, and the mixed first component and second component are discharged through the exhaust pipe and the atomizing nozzle of the turbocharger. Wherein the first nozzle has an injection direction tangential to the vane face of the turbocharger and the second nozzle has an injection direction opposite to the vane face of the turbocharger, the first nozzle and the second nozzle rotating the vanes of the turbocharger.

The first component and the second component are sprayed on the blades of the turbocharger in an atomizing mode, the blades of the turbocharger are driven to rotate, meanwhile, materials are mixed and stirred secondarily, the materials are fully stirred and mixed, meanwhile, the uniformly stirred materials are pressed into the atomizing nozzle, and high-pressure atomizing spraying is achieved. The turbocharger enables the sprayed materials to be equal to the materials added into the mixing cavity, and can effectively solve the problems of adhesion agglomeration and blockage in the mixing cavity. On this basis, this device can improve the live time of material, and current spraying equipment is when the spraying, needs the whole blowout of material in the equipment in the short time, otherwise can influence the performance of material, and this device is because the spun material is equal with the material of adding in the mixing chamber, consequently can use for a long time, and has avoided the problem that the material solidifies in the mixing chamber.

And secondly, a first regulating valve is arranged on the first nozzle, and a second regulating valve is arranged on the second nozzle. The amounts of the first component and the second component entering the mixing cavity are respectively controlled, so that the effect of fully stirring and mixing different materials is achieved.

On the basis, another object of the utility model is to provide a spraying device of a two-component coating, comprising the following steps:

Spraying the first component into the mixing cavity through a first nozzle, spraying the second component into the mixing cavity through a second nozzle, wherein the spraying direction of the first nozzle and the spraying direction of the second nozzle form an included angle;

The blade of the turbocharger rotates to carry out secondary mixing and stirring on the materials, and the uniformly stirred materials are pressed into an atomizing nozzle to be discharged.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

According to the spraying device for the two-component coating, disclosed by the utility model, the first component and the second component are subjected to tangential circular rotation in the mixing cavity to form a certain distance with the inner wall, so that the spraying device is a limited space jet flow, and the uniformity of materials in the mixing cavity is easier to realize; in addition, the first component is injected into the mixing cavity and is directly impacted by the transverse sweeping of the second component, so that the mixing and stirring conditions are excellent, and the stirring stability is better;

According to the utility model, the four first nozzles are respectively used for carrying out pairwise opposite injection on four corners in the mixing cavity to form four-corner material jet flow, so that the mixing of the first component and the second component can be enhanced, and the atomization stirring is enhanced; the material particles in the mixing cavity can be impacted, so that the inside of the material is decomposed, and the material particles are easier to atomize and fuse.

Meanwhile, the utility model adopts the turbocharger, one-stage or multi-stage turbocharging stirring blades are arranged in the mixing cavity according to the atomizing characteristic of the materials, the blades are used for carrying out secondary mixing and stirring on the materials by utilizing the atomizing pressure effect, so that the materials with different materials are fully mixed and stirred, and meanwhile, the uniformly stirred materials are pressed into an atomizing nozzle, so that high-pressure atomizing spraying is realized.

According to the utility model, the opposite-impact stirring of different directions is adopted, so that the first component and the second component are opposite-impact stirred through the fans with different directions, the opposite-impact stirring of the atomized material is completely realized, the multistage atomized mixing stirring of the material is realized, the material is fully mixed, the atomized mixing quality of the material is improved, and the effect required by spraying is achieved.

The high-pressure airless atomization spraying can be suitable for atomization spraying of any paint types, and compared with the traditional air spraying, the paint saving rate is as high as 37%. The one-time film forming thickness of airless atomization spraying is thicker, so that the spraying is not required to be repeated in actual operation, the possibility of overspray is reduced, the whole spraying process is smooth and uninterrupted, and the working efficiency is higher.

The device has the advantages of simple structure, convenient operation, no need of heating during spraying, uniform spraying and strong practicability. In addition, the device can adjust the proportion of components at any time during operation, achieves the proper coating required by workers, is simple and convenient, ensures the quality, has a simple structure, is convenient to use and is beneficial to popularization.

In addition, the existing mixing structures of various spray guns are welded on the gun body, so that the spray gun is inconvenient to assemble, disassemble and clean. The device can be quickly and conveniently split, and is favorable for cleaning.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

FIG. 1 is a schematic view of a structure in which four sets of mixing nozzles are disposed in a mixing chamber in embodiment 1;

Fig. 2 is a schematic structural view of the embodiment 1 in which the injection angle of the first nozzle is smaller than that of the second nozzle;

FIG. 3 is a schematic view showing the positions of the first nozzle and the second nozzle respectively acting on the turbine blade in embodiment 2;

FIG. 4 is a schematic view of the structure of the device in embodiment 3;

in the drawings, the reference numerals and corresponding part names:

1-mixing chamber, 2-first nozzle, 3-second nozzle, 4-first high-pressure pump, 5-second high-pressure pump, 6-turbo charger, 7-atomizing nozzle, 8-first governing valve, 9-second governing valve, 10-flow display, 11-first flow controller, 12-second flow controller, 13-first paint tank, 14-second paint tank, 15-first conveying pipeline, 16-second conveying pipeline.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model.

Example 1

The device comprises a mixing cavity 1, wherein a group of mixing nozzles are arranged in the mixing cavity 1, the mixing nozzles comprise a first nozzle 2 and a second nozzle 3, the first nozzle 2 is used for spraying a first component into the mixing cavity 1, and the second nozzle 3 is used for spraying a second component into the mixing cavity 1; the injection direction of the first nozzle 2 and the injection direction of the second nozzle 3 have an included angle, in this embodiment, the included angle is 90 degrees, and when the first nozzle ejects the first component, the second nozzle 3 opposite-impacts and injects the second component onto the first component, so that the uniformity of mixing and stirring can be improved.

Simultaneously, such mixed mode makes first component and second component carry out the tangent circle formula rotation in the mixing chamber, and the tangent circle formula is rotatory to form certain distance with the mixing chamber inner wall, and the material forms certain distance with the mixing chamber inner wall, can be for restricted space efflux, improves the degree of consistency of material in mixing stirring intracavity more easily, and need not complicated mixed structure, can avoid the material to take place to solidify, cause the problem of jam in the mixing chamber simultaneously under the evenly mixed condition.

In some embodiments, two groups of mixing nozzles are arranged in the mixing cavity 1, the first nozzles 2 in the two groups of mixing nozzles are arranged oppositely, and the spraying directions of the two first nozzles 2 are opposite.

In some embodiments, as shown in fig. 1, four groups of mixing nozzles are disposed in the mixing chamber 1, the first nozzles of the four groups of mixing nozzles are located at four corners of the rectangle respectively, and the four first nozzles are disposed in a pair-by-pair manner and spray out the first component, so that not only is the mixing of the first component and the second component enhanced, but also the stirring process is enhanced, and the material particles in the mixing chamber 1 are impacted, so that the internal decomposition of the material is accelerated, and the fusion is easier.

In some embodiments, the first nozzle 2 is connected to a first high-pressure pump 4, and the second nozzle 3 is connected to a second high-pressure pump 5. The first component and the second component form atomized air flow at the first nozzle 2 and the second nozzle 3 respectively, and the atomized air flow of the second component is opposite to the atomized air flow of the first component, so that the mixing efficiency is improved. And, carry out the mixed spraying through high pressure airless atomization, convenient operation not only, and need not to heat when the spraying, the spraying is even, and the practicality is strong.

In some embodiments, as shown in fig. 2, the injection angle of the first nozzle 2 is smaller than the injection angle of the second nozzle 3. Specifically, the nozzle structure of the first nozzle 2 is a narrow angle nozzle, which can generate a narrow angle fan-shaped spray with high impulse force, the spray generated by the spray is uniformly distributed, the size of the spray is medium, and the blocking phenomenon is reduced to the greatest extent by a large and smooth channel, and the nozzle angle of the first nozzle 2 can be 25 degrees. The nozzle structure of the second component is a wide-angle nozzle, can generate a wide-angle fan-shaped spray shape with medium impact force, the sprayed liquid mist is uniformly distributed, the size is medium, the blocking phenomenon is reduced to the greatest extent by a large and smooth channel, and the nozzle angle of the second nozzle 2 can be 35 degrees.

Example 2

On the basis of the embodiment, the turbocharger 6 is arranged in the mixing cavity 1, the atomizing nozzle 7 is arranged on the mixing cavity 1, the atomizing nozzle 7 is connected with the exhaust pipe of the turbocharger 6, and the mixed first component and second component are discharged through the exhaust pipe of the turbocharger 6 and the atomizing nozzle 7. The injection direction of the first nozzle 2 is tangential to the vane face of the turbocharger 6, the injection direction of the second nozzle 3 is opposite to the vane face of the turbocharger 6, and the first nozzle 2 and the second nozzle 3 rotate the vanes of the turbocharger 6. The material ejected is tangent to the blade surface of the turbocharger 6, contacts the whole surface of the blade, is opposite to the blade surface of the turbocharger 6, and is ejected on the blade vertically, and the tangent ejection direction is perpendicular to the opposite ejection direction, so that the blade is driven to rotate through the ejection angle.

The turbocharger 6 is composed of two parts, one part is a turbine and the other part is a compressor, the turbine is coaxially connected with the compressor, the compressor is connected with an exhaust pipe, the exhaust pipe is connected with an atomizing nozzle 7, and an air inlet pipe of the compressor is connected with the inside of the mixing cavity.

As shown in fig. 3, the first nozzle sprays the first component on the tangential plane of the blade of the turbine under the action of the first high-pressure pump 4, the second nozzle impacts the second component on the first component under the action of the second high-pressure pump 5, and the second component directly sprays against the blade surface of the turbine, the sprayed first component and second component drive the blade of the turbine to rotate, the turbine blade rotates to further improve the mixing uniformity of the first component and second component, meanwhile, the turbine drives the air compressor to rotate, the mixed first component and second component inside the mixing cavity are sucked into the air inlet pipe along with the rotation of the air compressor and compressed to form high pressure, and the high pressure is discharged through the exhaust pipe and the atomizing nozzle 7.

In some embodiments, the turbine is located in the mixing chamber 1, the compressor is located outside the mixing chamber, the blades of the turbine rotate under the action of the materials, and meanwhile, the compressor is driven to rotate through the shaft, the air inlet pipe of the compressor is connected with the inside of the mixing chamber, so that the materials in the mixing chamber are pressed into the exhaust pipe of the compressor, and are sprayed out through the atomization nozzle 7.

Example 3

As shown in fig. 4, the device comprises a first paint tank 13, a second paint tank 14, a first high-pressure pump 4, a second high-pressure pump 5, a first material conveying pipe 15, a second material conveying pipe 16, a first flow controller 11, a second flow controller 12, a flow display 10, a first regulating valve 8, a second regulating valve 9 and a total output switch.

The first paint tank 13 is connected with the mixing cavity through a first conveying pipe 15, a first high-pressure pump 4 is arranged on the first conveying pipe 15, and a first regulating valve 8, a first flow controller 11 and a first nozzle are arranged on the first conveying pipe 15;

The second paint tank 14 is connected with the mixing chamber through a second conveying pipe 16, a second high-pressure pump 5 is arranged on the second conveying pipe 16, and a second regulating valve 9, a second flow controller 12 and a second nozzle are arranged on the second conveying pipe 16.

When the device is used, firstly, the paint in the first paint tank 13 is pressurized through the first high-pressure pump 4, the paint is uniformly sprayed out under high pressure, the first regulating valve 8 is regulated through the first flow controller 11, the quantity and the proportion of the paint in the first paint tank 13 entering the mixing cavity are controlled, wherein the flow display 10 can be used for displaying the quantity of the introduced materials, the second high-pressure pump 5 pressurizes the paint in the second paint tank 14, and the quantity and the proportion of the paint in the second paint tank 14 entering the mixing cavity are controlled through the second flow controller 12, so that the paint in the first paint tank 13 and the paint in the second paint tank 14 are subjected to tangential atomization mixing in the mixing cavity.

Secondly, the materials are secondarily mixed and stirred through the blades of the turbocharger 6 under the action of the atomizing pressure of the materials, so that the aim of fully stirring and mixing different materials is fulfilled, and meanwhile, the uniformly stirred materials are pressed into the atomizing nozzle 7, so that high-pressure atomizing spraying is realized.

The use of "first," "second," "third," etc. herein is for clarity of description only and is not intended to limit any order or emphasize importance, etc. to distinguish between corresponding components. In addition, the term "coupled" as used herein may be directly coupled or indirectly coupled via other components, unless otherwise indicated.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (9)

1. The spraying device of the two-component coating is characterized by comprising a mixing cavity (1), wherein at least one group of mixing nozzles are arranged in the mixing cavity (1), each mixing nozzle comprises a first nozzle (2) and a second nozzle (3), the first nozzle (2) is connected with a first high-pressure pump (4), the second nozzle (3) is connected with a second high-pressure pump (5), the first nozzle (2) is used for spraying a first component into the mixing cavity (1), and the second nozzle (3) is used for spraying a second component into the mixing cavity (1); the spraying direction of the first nozzles (2) and the spraying direction of the second nozzles (3) form an included angle, two groups of mixing nozzles are arranged in the mixing cavity (1), the first nozzles (2) in the two groups of mixing nozzles are oppositely arranged, and the spraying directions of the two first nozzles (2) are opposite.

2. The two-component coating applicator of claim 1 wherein the included angle is 90 degrees.

3. A two-component coating spraying device according to claim 1, characterized in that the spray angle of the first nozzle (2) is smaller than the spray angle of the second nozzle (3).

4. A two-component coating spraying device according to claim 3, characterized in that the first nozzle (2) has a spray angle of 25 degrees and the second nozzle (3) has a spray angle of 35 degrees.

5. The two-component coating spraying device according to claim 1, characterized in that the first nozzle (2) is connected with a first regulating valve (8) and the second nozzle (3) is connected with a second regulating valve (9).

6. A device for spraying a two-component coating according to claim 1, characterized in that the direction of the spray of the first nozzle (2) is directed towards the centre of the mixing chamber (1).

7. The spraying device of the two-component coating according to claim 1, characterized in that a turbocharger (6) is arranged in the mixing cavity (1), an atomizing nozzle (7) is arranged on the mixing cavity (1), the atomizing nozzle (7) is connected with an exhaust pipe of the turbocharger (6), and the mixed first component and second component are discharged through the exhaust pipe of the turbocharger (6) and the atomizing nozzle (7).

8. A two-component paint spraying device according to claim 1, characterized in that the first nozzle (2) is connected to a first paint tank (13) for storing the first component.

9. A two-component paint spraying device according to claim 1, characterized in that the first nozzle (2) is connected to a second paint tank (14) for storing the second component.