Special paint spraying device

Abstract

The utility model belongs to the technical field of spraying equipment, and discloses a special paint spraying device. The special paint spraying device comprises a constant-temperature chamber, a pre-stirring mechanism, a stirring mechanism, a supply mechanism and a spraying mechanism. The constant-temperature chamber can keep the temperature in the constant-temperature chamber within a preset interval. The pre-stirring mechanism is located in the constant-temperature chamber and can pre-stir paint in the material barrel. The stirring mechanism is located in the constant-temperature chamber, and the stirring mechanism can extract the paint in the material barrel and stir the paint; the supply mechanism can extract paint and supply the paint to the spraying mechanism, and the spraying mechanism can spray the paint supplied by the supply mechanism to the surface of a product. According to the special paint spraying device, paint is stored and secondarily stirred in a constant-temperature environment, so that the influence of temperature change on the viscosity of the paint is prevented, the paint is uniformly mixed, the spraying uniformity is improved, the blockage of equipment is reduced, and the product quality and the production efficiency are finally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a special paint spraying device. Background Art

[0002] Special paints refer to paints for various special purposes. In addition to their protective functions, these paints also have certain special properties to meet the design needs of the coated products.

[0003] Paints commonly used in the automotive manufacturing industry have a solids content of 30%-40%. A special water-based paint currently available has a solids content of approximately 50%. While this paint is environmentally friendly and offers excellent performance, it also has high viscosity and is prone to agglomeration. This can cause existing spray equipment to experience problems such as uneven spraying and equipment clogging, impacting product quality and production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a special paint spraying device to improve the uniformity of special paint spraying, reduce the possibility of equipment clogging, and thus improve product quality and production efficiency.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A special paint spraying device, comprising:

[0007] A constant temperature chamber capable of maintaining the temperature therein within a preset range;

[0008] A pre-mixing mechanism, the pre-mixing mechanism being located inside the constant temperature chamber and being capable of pre-mixing the paint inside the barrel;

[0009] A stirring mechanism, the stirring mechanism is located inside the constant temperature chamber, the stirring mechanism can extract the paint inside the barrel and stir the paint, and the stirring speed of the pre-stirring mechanism and the stirring mechanism is 10 rpm to 45 rpm;

[0010] A supply mechanism and a spraying mechanism, wherein the supply mechanism can extract the paint and supply it to the spraying mechanism, and the spraying mechanism can spray the paint supplied by the supply mechanism onto the surface of the product.

[0011] Preferably, the pre-stirring mechanism comprises:

[0012] base;

[0013] A lifting seat, the lifting seat is slidably arranged on the base, and the lifting seat can be raised and lowered in a vertical direction relative to the base;

[0014] The first stirring component is arranged on the lifting seat, and the lifting seat can drive the first stirring component to rise to a position below the first stirring component to accommodate the material barrel, and the lifting seat can drive the first stirring component to fall to a position where the first stirring component extends into the material barrel, and the first stirring component can stir the paint.

[0015] Preferably, the first stirring component comprises:

[0016] A stirring shaft, the stirring shaft being rotatably connected to the lifting seat;

[0017] A stirring drive member, the stirring drive member is connected to the mounting plate, and the stirring drive member can drive the stirring shaft to rotate;

[0018] A stirring blade is connected to the stirring shaft and is close to the bottom end of the stirring shaft.

[0019] Preferably, the rotation speed of the stirring shaft is 10 r / min-45 r / min.

[0020] Preferably, the stirring mechanism comprises:

[0021] Mixing barrel;

[0022] A pouring pump, wherein the feed port of the pouring pump is connected to the interior of the material barrel through a pipeline, and the discharge port of the pouring pump is connected to the interior of the mixing barrel through a pipeline;

[0023] The second stirring component is arranged on the stirring barrel, and the second stirring component can stir the paint inside the stirring barrel.

[0024] Preferably, the supply mechanism comprises:

[0025] The supply pump is a horizontal plunger pump, the feed port of the supply pump is connected to the discharge port of the stirring mechanism through a pipeline, and the discharge port of the supply pump is connected to the spraying mechanism through a supply pipeline.

[0026] Preferably, the supply mechanism further comprises:

[0027] A proportioning supply component is provided in the middle section of the supply pipeline, and the proportioning supply component can quantitatively supply the paint to the spraying mechanism.

[0028] Preferably, the supply mechanism further comprises:

[0029] A constant temperature barrel is provided, wherein a constant temperature medium is stored inside the constant temperature barrel, a constant temperature section is provided in the middle of the supply pipeline, and a portion of the constant temperature section is immersed in the medium.

[0030] Beneficial effects of the utility model:

[0031] The special paint spraying device of the present invention arranges the pre-stirring mechanism and the stirring mechanism inside the constant temperature chamber. During the process of storing and stirring the paint, the physical properties of the paint are ensured to be stable, and the paint is prevented from being too thin due to too high temperature or from being too high in viscosity due to too low temperature, so that the viscosity of the paint is within a predetermined range and is not easy to agglomerate. Pre-stirring the paint can preliminarily mix the paint that has been stored for a period of time, and prevent blockage during extraction and precipitation of solid matter in the paint. The secondary stirring can make the paint mixing more uniform. In addition, the paint is stirred at a low speed of 10r / min-45r / min, which can reduce the shear force on the paint during the stirring process, and then the paint is further mixed uniformly. After the paint is stirred, the paint is supplied to the spraying mechanism through the supply mechanism and sprayed on the surface of the product, thereby improving the uniformity of the spraying when spraying the paint, reducing the blockage of the equipment, and ultimately improving the product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of the special paint spraying device of the utility model;

[0033] Figure 2 It is a structural schematic diagram of the pre-stirring mechanism of the stirring mechanism of the utility model;

[0034] Figure 3 It is a structural schematic diagram of the constant temperature barrel of the present utility model.

[0035] In the picture:

[0036] 1. Stirring mechanism; 11. Stirring barrel; 111. Receiving hopper; 112. Discharge valve; 12. Discharge pump; 13. Second stirring assembly; 2. Supply mechanism; 21. Supply pump; 211. Supply pipe; 2111. Constant temperature section; 22. Proportional supply assembly; 23. Constant temperature barrel; 3. Spraying mechanism; 31. Automatic spray gun; 32. Manual spraying; 4. Pre-stirring mechanism; 41. Base; 411. Slide rail; 42. Lifting seat; 421. Column; 4211. Slider; 422. Mounting plate; 423. Diagonal support rod; 43. First stirring assembly; 431. Stirring shaft; 432. Stirring drive; 433. Stirring blade; 51. Cleaning barrel; 52. Cleaning pump. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0038] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] Refer to the following Figures 1 to 3 The special paint spraying device provided by the utility model is described.

[0042] Reference Figure 1The special paint spraying device includes a constant temperature chamber, a pre-mixing mechanism 4, a stirring mechanism 1, a supply mechanism 2 and a spraying mechanism 3. The pre-mixing mechanism 4 and the stirring mechanism 1 are both arranged inside the constant temperature chamber. The constant temperature chamber can keep the temperature inside it within a preset range. The pre-mixing mechanism 4 can pre-mix the paint inside the barrel. The stirring mechanism 1 can extract the paint inside the barrel and stir the paint. The supply mechanism 2 can extract the paint and supply the paint to the spraying mechanism 3. The spraying mechanism 3 can spray the paint onto the surface of the product.

[0043] For example, in this embodiment, the interior of the constant temperature chamber is controlled by a constant temperature unit to maintain a temperature of 18°C-28°C, preferably 20°C-25°C in this embodiment. This temperature ensures the stability of the paint and its physical properties, and reduces the impact of temperature fluctuations on the paint's viscosity. Unused barrels can also be stored directly inside the constant temperature chamber. In other embodiments, temperature control can also be achieved by installing air conditioning or other temperature-adjustable equipment inside the constant temperature chamber, and the specific form is not limited.

[0044] Reference Figure 2 The pre-mixing mechanism 4 includes a base 41, a lifting seat 42 and a first mixing assembly 43. The lifting seat 42 is slidably connected to the base 41 and can be lifted and lowered in the vertical direction relative to the base 41. The lifting seat 42 includes a column 421 and a mounting plate 422. The column 421 is vertically arranged. A driving member is connected between the bottom end of the column 421 and the base 41. The driving member can be any of a pneumatic cylinder, an oil cylinder or an electric cylinder. In this embodiment, a pneumatic cylinder is used as an example. The cylinder body of the cylinder is connected to the column 421, and the piston rod of the cylinder is connected to the base 41. The piston rod of the cylinder moves in the vertical direction. The mounting plate 422 is horizontally connected to the top of the column 421. An oblique support rod 423 is connected between the column 421 and the mounting plate 422. The oblique support rod 423 supports the mounting plate 422 to improve the working stability of the mounting plate 422. The first mixing assembly 43 is mounted on the mounting plate 422.

[0045] Based on the above, when the piston rod of the cylinder moves vertically, it drives the column 421 to rise and fall. The lifting stroke is adjusted according to the height of the material barrel, ensuring that when the first stirring assembly 43 is raised to its highest point, there is enough space for the material barrel to be accommodated below it. In addition, a slide rail 411 is vertically connected to the base 41, and a slider 4211 is connected to the column 421. The slider 4211 is slidably connected to the slide rail 411, thereby guiding and limiting the sliding movement of the lifting base 42.

[0046] Exemplarily, the first stirring component 43 includes a stirring shaft 431, a stirring drive 432 and stirring blades 433. The stirring shaft 431 is vertically arranged and the top end is rotatably connected to the mounting plate 422. The stirring drive 432 is mounted on the mounting plate 422 to drive the stirring shaft 431 to rotate. The stirring drive 432 can be any component that can drive the stirring shaft 431 to rotate, such as a motor or a hydraulic motor. In this embodiment, the motor is used as an example, and the rotation speed of the stirring shaft 431 during stirring is 10r / min-45r / min, and in this embodiment, it is preferably 15r / min-30r / min. There are multiple groups of stirring blades 433 on the stirring shaft 431 along its axial direction. In this embodiment, two groups are used as an example. Each group of stirring blades 433 has multiple uniformly distributed circumferentially along the stirring shaft 431. In this embodiment, three groups are used as an example. The stirring blades 433 adopt low-shear stirring blades. The design of low-shear stirring blades is a prior art and will not be described in detail here.

[0047] Before the paint is properly stirred, the first stirring assembly 43 is raised, the paint barrel is opened and placed beneath the stirring shaft 431, and then the first stirring assembly 43 is lowered until the stirring blades 433 are completely immersed in the paint within the barrel. The stirring drive 432 rotates the stirring shaft 431, thereby pre-stirring the paint at a constant temperature. This ensures the stability of the paint's physical properties and allows for initial mixing of the paint after a period of storage, preventing blockage during subsequent paint extraction and the precipitation of solid matter within the paint. Furthermore, the use of low-shear stirring blades for low-speed stirring reduces shear forces on the paint, ensuring uniform mixing and preventing clumping and precipitation. This also prevents shear deformation of paint molecules that could alter their rheological properties.

[0048] Specifically, the stirring mechanism 1 includes a stirring barrel 11, a pouring pump 12, and a second stirring assembly 13. The stirring barrel 11 is placed vertically on one side of the pre-stirring mechanism 4. The bottom of the stirring barrel 11 is connected to a receiving hopper 111, and the bottom of the receiving hopper 111 is connected to a discharge valve 112. The pouring pump 12 is mounted on the mounting plate 422. The feed port of the pouring pump 12 is connected to the interior of the barrel through a pipe, and the discharge port of the pouring pump 12 is connected to the interior of the stirring barrel 11 through a pipe. The second stirring assembly 13 is connected to the stirring barrel 11. The second stirring assembly 13 is capable of stirring the paint inside the stirring barrel 11. The structure of the second stirring assembly 13 in this embodiment is consistent with the structure of the first stirring assembly 43 and will not be repeated here.

[0049] Based on the above, the pre-stirred paint is pumped into the mixing drum 11 via the feed pump 12. The second stirring assembly 13 further stirs the paint, ensuring a more even mix and preventing clumping and sedimentation, resulting in a finished paint. Furthermore, after stirring ceases, any sediment in the paint settles into the hopper 111, which can be discharged by opening the discharge valve 112. Furthermore, when cleaning the interior of the mixing drum 11, the hopper 111 can be used to collect paint dripping from the stirring blades 433.

[0050] Specifically, the supply mechanism 2 includes a supply pump 21, a constant temperature barrel 23, and a proportioning supply assembly 22. The feed port of the supply pump 21 is connected to the discharge port of the stirring mechanism 1 through a pipeline, and the discharge port of the supply pump 21 is connected to the spraying mechanism 3 through a supply pipeline 211. The supply pump 21 in this embodiment is a horizontal plunger pump, and two horizontal plunger pumps are arranged in parallel. The working principle of the horizontal plunger pump is based on the reciprocating motion of the plunger in the cylinder body, and the suction and pressure of the paint are achieved through the change of the sealed volume. This working mode enables the horizontal plunger pump to smoothly deliver high-viscosity paint at a relatively low pressure during operation, minimizing the impact of shear force on the fluid, thereby allowing the paint to maintain specific physical or chemical properties to prevent the paint from agglomerating and settling. In addition, the supply pump 21 in this embodiment is placed inside the constant temperature chamber, thereby further reducing the adverse effects of temperature changes on the paint.

[0051] Reference Figure 1 and Figure 3 A constant temperature section 2111 is provided in the middle of the supply pipeline. This section 2111 is U-shaped, and a branch is provided at the inlet of the constant temperature section 2111, corresponding to each supply pump 21. The constant temperature barrel 23 stores a constant temperature medium. In this embodiment, the medium is water, and the constant temperature section 2111 is partially immersed in the medium. The constant temperature medium further controls the temperature of the paint being pumped, reducing the impact of temperature fluctuations on the viscosity of the finished paint and preventing agglomeration and clogging of the spray mechanism 3. In other embodiments, the medium may also be oil or the like.

[0052] The proportioning supply assembly 22 is disposed in the middle section of the supply pipe 211. The proportioning supply assembly 22 is capable of quantitatively supplying paint to the spray mechanism 3 and is located between the constant temperature section 2111 and the spray mechanism 3. In this embodiment, two proportioning supply assemblies 22 are disposed in parallel, and a branch is provided at the outlet of the constant temperature section 2111 corresponding to each proportioning supply assembly 22. The outlet of the constant temperature section 2111 is also provided with a separate, direct branch corresponding to the spray mechanism 3. The proportioning supply assembly 22 is a paint proportioning system known in the prior art, and the feed port of the paint proportioning system is provided with a metering cylinder. The metering cylinder allows for quantitative, continuous, and stable paint delivery, preventing jamming during the paint delivery process. The paint is then proportioned by the paint proportioning system to obtain proportioned paint, which is then accurately delivered to the spray mechanism 3.

[0053] Specifically, in this embodiment, the spraying mechanism 3 includes an automatic spray gun 31 and a manual spray gun 32. In this embodiment, two automatic spray guns 31 are provided, one connected to a single proportioning supply assembly 22, and the other connected directly to the supply pipe 211. The automatic spray gun 31 or the manual spray gun 32 is selected as needed to spray the product. In other embodiments, the spraying mechanism 3 may also employ any conventional mechanism capable of spraying the product.

[0054] In addition, in order to clean the above-mentioned components, the special paint spraying device also includes a cleaning barrel 51 and a cleaning pump 52. The cleaning barrel 51 is connected to the interior of the stirring barrel 11 and the feed section of the supply pipe 211 through a pipeline. The inlet of the cleaning pump 52 is connected to the interior of the cleaning barrel 51 through a pipeline, and the outlet of the cleaning pump 52 is connected to the discharge section of the supply pipe 211 and the proportioning supply component 22 through a pipeline. Therefore, when the special paint spraying device is out of use, it is convenient to clean the cleaning barrel 51, the supply pipe 211 and related components.

[0055] It is worth noting that all of the aforementioned pipes are rigid pipes with smooth inner walls. In this embodiment, the pipes are made of stainless steel to reduce paint adhesion to the pipe walls and to take advantage of stainless steel's corrosion resistance. The pipes also feature large radii at bends to prevent paint from accumulating and clumping at the elbows. The specific dimensions can be adjusted based on the properties of the paint.

[0056] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Special paint spraying device, characterized in that, The special paint spraying device includes: A constant temperature chamber capable of maintaining the temperature therein within a preset range; A pre-mixing mechanism (4), the pre-mixing mechanism (4) is located inside the constant temperature chamber, and the pre-mixing mechanism (4) is capable of pre-mixing the paint inside the barrel; A stirring mechanism (1), the stirring mechanism (1) is located inside the constant temperature chamber, the stirring mechanism (1) can extract the paint inside the barrel and stir the paint, and the stirring speed of the pre-stirring mechanism (4) and the stirring mechanism (1) is 10 rpm to 45 rpm; A supply mechanism (2) and a spraying mechanism (3), wherein the supply mechanism (2) can extract the paint and supply it to the spraying mechanism (3), and the spraying mechanism (3) can spray the paint supplied by the supply mechanism (2) onto the surface of the product.

2. The special paint spraying device according to claim 1, characterized in that: The pre-stirring mechanism (4) comprises: base (41); A lifting seat (42), wherein the lifting seat (42) is slidably arranged on the base (41), and the lifting seat (42) can be lifted and lowered in a vertical direction relative to the base (41); A first stirring component (43) is arranged on the lifting seat (42), and the lifting seat (42) can drive the first stirring component (43) to rise to a position below the first stirring component (43) to accommodate the material barrel, and the lifting seat (42) can drive the first stirring component (43) to descend to a position where the first stirring component (43) extends into the material barrel, and the first stirring component (43) can stir the paint.

3. The special paint spraying device according to claim 2, characterized in that: The first stirring assembly (43) comprises: A stirring shaft (431), the stirring shaft (431) is rotatably connected to the lifting seat (42); A stirring drive member (432), the stirring drive member (432) is connected to the mounting plate (422), and the stirring drive member (432) can drive the stirring shaft (431) to rotate; A stirring blade (433), wherein the stirring blade (433) is connected to the stirring shaft (431), and the stirring blade (433) is close to the bottom end of the stirring shaft (431).

4. The special paint spraying device according to claim 3, characterized in that: The rotation speed of the stirring shaft (431) is 10 r / min-45 r / min.

5. The special paint spraying device according to claim 1, characterized in that: The stirring mechanism (1) comprises: Mixing bucket (11); A pouring pump (12), wherein the feed port of the pouring pump (12) is connected to the interior of the material barrel through a pipeline, and the discharge port of the pouring pump (12) is connected to the interior of the mixing barrel (11) through a pipeline; A second stirring component (13), the second stirring component (13) is arranged on the stirring barrel (11), and the second stirring component (13) can stir the paint inside the stirring barrel (11).

6. The special paint spraying device according to any one of claims 1 to 5, characterized in that: The supply mechanism (2) comprises: A supply pump (21), wherein the supply pump (21) is a horizontal plunger pump, wherein the feed port of the supply pump (21) is connected to the discharge port of the stirring mechanism (1) through a pipeline, and the discharge port of the supply pump (21) is connected to the spraying mechanism (3) through a supply pipeline (211).

7. The special paint spraying device according to claim 6, characterized in that: The supply mechanism (2) further comprises: A proportioning supply component (22) is provided in the middle section of the supply pipe (211), and the proportioning supply component (22) can quantitatively supply the paint to the spraying mechanism (3).

8. The special paint spraying device according to claim 6, characterized in that: The supply mechanism (2) further comprises: A constant temperature barrel (23) stores a constant temperature medium inside the constant temperature barrel (23), a constant temperature section (2111) is provided in the middle of the supply pipeline, and a portion of the constant temperature section (2111) is immersed in the medium.

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