Lacquer processing technology and processing equipment

Abstract

The present invention relates to the technical field of lacquer processing, specifically to a lacquer processing technology and processing equipment, comprising: a stirring tank upper cover is arranged above the stirring tank, the bottom of the stirring tank upper cover is connected to a docking tube, one side of the docking tube is connected to a connecting pipe, a rotating cylinder is arranged at the bottom of the docking tube, and a spiral plate is installed inside the rotating cylinder; a rotating trough bracket is arranged on the surface of the stirring tank upper cover, and a rotating feeding trough is arranged inside the rotating trough bracket for rotation; a filling hopper is arranged on the surface of the stirring tank upper cover, a filter rack is inserted into the filling hopper, a filter tank is provided inside the filter rack, and a filter plate is installed at the bottom of the filter tank; by arranging the filter rack and the rotating cylinder, the paint liquid at the bottom of the stirring tank is transported to the inside of the docking tube while the paint liquid inside the stirring tank is stirred, and then flows back to the inside of the stirring tank through the filtration of the filter plate, so that the paint liquid is filtered while being stirred, thereby simplifying the lacquer processing process and improving the efficiency of lacquer processing.

Description

Technical Field

[0001] The present invention relates to the technical field of lacquer processing, in particular to a lacquer processing technology and processing equipment. Background Art

[0002] Lacquer is a natural resin coating. It is a white viscous emulsion that flows out from the bast of the lacquer tree after cutting. It is processed into a coating. Depending on its use, additives such as tung oil and modifiers can also be added. Its paint film is strong and has properties such as corrosion resistance, strong acid resistance, strong alkali resistance, and moisture resistance.

[0003] In the prior art, the processing of lacquer requires filtering the collected raw lacquer to remove bark impurities, then stirring the filtered lacquer liquid to promote the oxidation and polymerization of urushiol, and then adding specific additives according to its use to complete the processing of lacquer.

[0004] However, in the above technology, the paint liquid is first filtered and then stirred, which makes the processing process more complicated and affects the processing efficiency. In addition, when adding additives, the additives are prone to sputtering when they come into contact with the paint liquid, causing pollution to the processing environment. Summary of the Invention

[0005] The purpose of the present invention is to provide a lacquer processing technology and processing equipment to solve the problems raised by the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lacquer processing technology and processing equipment, comprising:

[0008] A stirring tank, wherein a stirring tank upper cover is provided above the stirring tank, a docking cylinder is connected to the bottom of the stirring tank upper cover, a connecting pipe is connected to one side of the docking cylinder, a rotating cylinder is provided at the bottom of the docking cylinder, a spiral plate is installed inside the rotating cylinder, and the spiral plate is used to transport the material at the bottom of the rotating cylinder to the top of the rotating cylinder;

[0009] A rotating trough bracket is provided on the surface of the upper cover of the mixing tank, and a rotating feeding trough is provided inside the rotating trough bracket for conveying additives into the interior of the mixing tank;

[0010] The filling hopper is arranged on the surface of the upper cover of the stirring tank. A filter rack is inserted into the filling hopper, a filter tank is opened inside the filter rack, and a filter plate is installed at the bottom of the filter tank.

[0011] Preferably, a stirring tank bracket is connected to the side of the stirring tank, and a discharge port is fixedly provided at the bottom of the stirring tank.

[0012] Preferably, a driving device is fixedly mounted on the surface of the upper cover of the stirring tank, and an additive filling pipe is provided on the surface of the upper cover of the stirring tank.

[0013] Preferably, a rotating shaft is provided in the middle of the rotating cylinder, the rotating shaft is connected to the output end of the driving device, and a plurality of groups of stirring blades are fixedly mounted on the outer side of the rotating cylinder.

[0014] Preferably, the spiral plate is arranged between the inner wall of the rotating cylinder and the rotating shaft, and the spiral plate passes through both ends of the rotating cylinder. The rotating cylinder is provided with a feed port at the bottom end of the spiral plate.

[0015] Preferably, an arc-shaped groove is provided on the surface of the trough bracket, positioning grooves are provided at both ends of the arc-shaped groove, the trough bracket is connected to the additive filling pipe, a limit block and a sealing plate are fixedly installed on the inner wall of the trough bracket, a fixed shaft is fixedly installed in the middle of the trough bracket, and a scraper is fixedly installed on the surface of the fixed shaft.

[0016] Preferably, both ends of the rotating feed trough are fixedly connected with rotating trough end plates, and the rotating trough end plates are rotatably mounted on the surface of the fixed shaft. The outer side wall of the rotating feed trough is slidingly fitted with the limit block and the sealing plate, and the inner side wall of the rotating feed trough is slidingly fitted with the scraper. A rotating trough control handle is fixedly mounted on the surface of one group of the rotating trough end plates, and the rotating trough control handle passes through the arc-shaped groove.

[0017] Preferably, an end cap is installed on the end of the rotating groove control handle away from the rotating groove end plate, and a control sleeve is provided on the surface sliding sleeve of the end cap. A positioning sleeve is fixedly connected to the end of the control sleeve close to the arc groove, and the positioning sleeve is inserted into the interior of the positioning groove. A compression spring is provided between the positioning sleeve and the end cap.

[0018] Preferably, the filter rack slides through the upper cover of the mixing tank, the top of the filter rack is fixedly connected to a bucket cover, the top of the bucket cover is equipped with a handle, one side of the filter rack is fitted with the connecting pipe, and the filter tank is connected to the connecting pipe.

[0019] A processing technology for lacquer comprises the following steps:

[0020] Step 1: Pull the filter rack out of the filling hopper by pulling the handle, then pour the collected paint liquid into the mixing tank through the filling hopper, and then insert the filter rack into the filling hopper so that the hopper cover fits with the top of the filling hopper to close the filling hopper;

[0021] Step 2: Start the driving device, which drives the rotating drum to rotate through the rotating shaft and the spiral plate. During the rotation of the rotating drum, the stirring blades are driven to stir the paint liquid inside the mixing tank. At the same time, the paint liquid inside the mixing tank enters the interior of the rotating drum through the feed port, and is then transported to the interior of the docking drum through the spiral plate;

[0022] Step 3: The paint liquid entering the docking tube enters the filter tank through the connecting pipe, is filtered by the filter plate, and then flows back to the mixing tank to participate in the stirring, so that the urushiol in the paint liquid is accelerated to oxidize and polymerize;

[0023] Step 4: After the paint liquid inside the mixing tank reaches the specified state through stirring, add the additives into the inside of the rotary feed trough, pull the control sleeve to make the positioning sleeve disengage from the inside of the positioning groove, and then control the control sleeve to move inside the arc groove, drive the rotary feed trough to rotate, and make the opening of the rotary feed trough face the inside of the mixing tank, so that the additives inside the rotary feed trough flow into the interior of the mixing tank and mix with the paint liquid, thereby completing the lacquer processing.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. By setting up a filter rack and a rotating cylinder, the paint liquid at the bottom of the mixing tank is transported to the inside of the docking cylinder while the paint liquid inside the mixing tank is stirred, and then flows back to the inside of the mixing tank through the filtration of the filter plate, so that the paint liquid can be filtered while being stirred, thereby simplifying the lacquer processing process and improving the efficiency of lacquer processing.

[0026] 2. By setting up a rotary feeding trough, when the paint liquid inside the mixing tank reaches a specified state, the additive is added into the rotary feeding trough, the control sleeve is pulled to disengage the positioning sleeve from the inside of the positioning groove, and then the control sleeve is controlled to move inside the arc groove, driving the rotary feeding trough to rotate, so that the opening of the rotary feeding trough faces the inside of the mixing tank, so that the additive inside the rotary feeding trough flows into the inside of the mixing tank and mixes with the paint liquid. During the rotation of the rotary feeding trough, the additive filling pipe is always in a closed state, thereby avoiding splashing of the additive to the outside of the mixing tank when it contacts the paint liquid, thereby avoiding affecting the processing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic cross-sectional view of the filling hopper of the present invention;

[0029] Figure 3 This is a schematic diagram of the rotating drum structure of the present invention;

[0030] Figure 4 It is a side cross-sectional schematic diagram of the switching trough bracket of the present invention;

[0031] Figure 5 For the present invention Figure 4 A in the middle is an enlarged schematic diagram;

[0032] Figure 6 This is a front cross-sectional schematic diagram of the trough support of the present invention;

[0033] Figure 7 This is a schematic diagram of the upper cover structure of the stirring tank of the present invention;

[0034] Figure 8 It is a schematic diagram of the filter frame structure of the present invention.

[0035] In the figure: mixing tank 1, mixing tank bracket 11, discharge port 12, mixing tank upper cover 2, docking cylinder 21, connecting pipe 211, additive filling pipe 22, driving device 3, rotating trough bracket 4, limit block 41, sealing plate 42, fixed shaft 43, scraper 431, rotating feed trough 44, rotating trough end plate 441, rotating trough control handle 442, end cap 443, compression spring 444, control sleeve 45, positioning sleeve 451, arc groove 46, positioning groove 461, filling bucket 5, bucket cover 51, handle 511, filter frame 52, filter trough 521, filter plate 522, rotating cylinder 6, rotating shaft 61, spiral plate 62, feed port 63, stirring blade 64. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0037] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or interactions between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through an intermediate structure, but are connected only through a connecting structure to form a whole. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be such that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0041] Please see the attached Figure 1 To the attached Figure 8 As shown, the present invention provides a lacquer processing technology and processing equipment, including:

[0042] A stirring tank 1 is provided with a stirring tank bracket 11 on the side of the stirring tank 1, a discharge port 12 is fixedly provided at the bottom of the stirring tank 1, a stirring tank cover 2 is provided above the stirring tank 1, a driving device 3 is fixedly installed on the surface of the stirring tank cover 2, an additive filling pipe 22 is provided on the surface of the stirring tank cover 2, a docking cylinder 21 is connected to the bottom of the stirring tank cover 2, a connecting pipe 211 is connected to one side of the docking cylinder 21, a rotating cylinder 6 is provided at the bottom of the docking cylinder 21, and a rotating cylinder 6 is provided in the middle of the rotating cylinder 6. A rotating shaft 61 is connected to the output end of the driving device 3. A plurality of stirring blades 64 are fixedly installed on the outer side of the rotating cylinder 6. A spiral plate 62 is installed inside the rotating cylinder 6. The spiral plate 62 is arranged between the inner wall of the rotating cylinder 6 and the rotating shaft 61, and the spiral plate 62 passes through both ends of the rotating cylinder 6. The rotating cylinder 6 is provided with a feed port 63 at the bottom end of the spiral plate 62. The spiral plate 62 is used to transport the material at the bottom of the rotating cylinder 6 to the top of the rotating cylinder 6.

[0043] The trough bracket 4 is arranged on the surface of the mixing tank cover 2, and an arc groove 46 is provided on the surface of the trough bracket 4, and positioning grooves 461 are provided at both ends of the arc groove 46. The trough bracket 4 is connected to the additive filling pipe 22, and a limit block 41 and a sealing plate 42 are fixedly installed on the inner wall of the trough bracket 4. A fixed shaft 43 is fixedly installed in the middle of the trough bracket 4, and a scraper 431 is fixedly installed on the surface of the fixed shaft 43. A rotating feeding trough 44 is rotatably provided inside the trough bracket 4, and both ends of the rotating feeding trough 44 are fixedly connected with a trough end plate 441, and the trough end plate 441 is rotatably installed on the surface of the fixed shaft 43. The outer wall of the rotating feeding trough 44 is connected with the limit block 41, The sealing plate 42 is slidably fitted, and the inner side wall of the rotating feeding trough 44 is slidably fitted with the scraper 431, wherein a group of the rotating trough end plates 441 are fixedly mounted with a rotating trough control handle 442 on the surface thereof, and the rotating trough control handle 442 passes through the arc groove 46, and an end cap 443 is mounted on the end of the rotating trough control handle 442 away from the rotating trough end plate 441, and a sliding sleeve 45 is provided on the surface of the end cap 443, and a positioning sleeve 45 is fixedly connected to the end of the control sleeve 45 close to the arc groove 46, and the positioning sleeve 451 is inserted into the interior of the positioning groove 461, and a compression spring 444 is provided between the positioning sleeve 451 and the end cap 443, and the rotating feeding trough 44 is used to transport additives to the interior of the mixing tank 1;

[0044] The filling hopper 5 is arranged on the surface of the upper cover 2 of the mixing tank. A filter rack 52 is inserted into the interior of the filling hopper 5. The filter rack 52 slides through the upper cover 2 of the mixing tank. The top of the filter rack 52 is fixedly connected to a hopper cover 51. A handle 511 is installed on the top of the hopper cover 51. One side of the filter rack 52 is fitted with the connecting pipe 211. The filter tank 521 is connected to the connecting pipe 211. A filter tank 521 is opened inside the filter rack 52, and a filter plate 522 is installed at the bottom of the filter tank 521.

[0045] A processing technology of lacquer includes:

[0046] Step 1: Pull the filter rack 52 out of the filling hopper 5 by pulling the handle 511, then pour the collected paint liquid into the mixing tank 1 through the filling hopper 5, and then insert the filter rack 52 into the filling hopper 5 so that the hopper cover 51 fits with the top of the filling hopper 5 to close the filling hopper 5;

[0047] Step 2: Start the driving device 3, which drives the rotating drum 6 to rotate via the rotating shaft 61 and the spiral plate 62. During the rotation of the rotating drum 6, the stirring blades 64 are driven to stir the paint liquid inside the stirring tank 1. At the same time, the paint liquid inside the stirring tank 1 enters the interior of the rotating drum 6 through the feed port 63, and is then transported to the interior of the docking drum 21 through the spiral plate 62.

[0048] Step 3: The paint liquid entering the docking tube 21 enters the filter tank 521 through the connecting pipe 211, is filtered by the filter plate 522, and then flows back to the stirring tank 1 to participate in stirring, so as to accelerate the oxidation and polymerization of the urushiol in the paint liquid;

[0049] Step 4: After the paint liquid inside the mixing tank 1 reaches the specified state through stirring, the additive is added into the interior of the rotary feed trough 44, the control sleeve 45 is pulled to disengage the positioning sleeve 451 from the interior of the positioning groove 461, and then the control sleeve 45 is controlled to move inside the arc groove 46, driving the rotary feed trough 44 to rotate, so that the opening of the rotary feed trough 44 faces the interior of the mixing tank 1, so that the additive inside the rotary feed trough 44 flows into the interior of the mixing tank 1 and mixes with the paint liquid, thereby completing the processing of the lacquer.

[0050] The lacquer processing equipment proposed by the present invention is that when in use, the handle 511 is pulled to pull the filter frame 52 out from the inside of the filling hopper 5, and then the collected paint liquid is poured into the inside of the stirring tank 1 through the filling hopper 5, and then the filter frame 52 is inserted into the inside of the filling hopper 5, so that the hopper cover 51 is fitted with the top of the filling hopper 5, and the filling hopper 5 is closed, and then the driving device 3 is started. The driving device 3 drives the rotating drum 6 to rotate through the rotating shaft 61 and the spiral plate 62. During the rotation of the rotating drum 6, the stirring blade 64 is driven to stir the paint liquid in the stirring tank 1. At the same time, the paint liquid in the stirring tank 1 enters the inside of the rotating drum 6 through the feeding port 63, and is then transported to the inside of the docking tube 21 through the spiral plate 62. The paint liquid entering the docking tube 21 enters the inside of the filter tank 521 through the connecting pipe 211, and after being filtered by the filter plate 522, it flows back to the inside of the stirring tank 1 to participate in stirring, so that the lacquer phenol in the paint liquid is accelerated to oxidize and polymerize.

[0051] By setting up the filter rack 52 and the rotating cylinder 6, the paint liquid at the bottom of the stirring tank 1 is transported to the inside of the docking cylinder 21 while the paint liquid inside the stirring tank 1 is stirred, and then flows back to the inside of the stirring tank 1 through the filtration of the filter plate 522, so that the paint liquid can be filtered while being stirred, thereby simplifying the lacquer processing process and improving the efficiency of lacquer processing.

[0052] As a further improvement of the present invention, by setting a rotating feed trough 44, when the paint liquid inside the mixing tank 1 reaches a specified state, the additive is added to the inside of the rotating feed trough 44, and the control sleeve 45 is pulled to make the positioning sleeve 451 disengage from the inside of the positioning groove 461, and then the control sleeve 45 is controlled to move inside the arc groove 46, driving the rotating feed trough 44 to rotate, so that the opening of the rotating feed trough 44 faces the inside of the mixing tank 1, so that the additive inside the rotating feed trough 44 flows into the inside of the mixing tank 1 and mixes with the paint liquid. During the rotation of the rotating feed trough 44, the additive filling pipe 22 is always in a closed state, thereby avoiding the additive from splashing to the outside of the mixing tank 1 when it contacts the paint liquid, thereby avoiding affecting the processing environment.

[0053] As a further improvement of the present invention, by providing a fixed shaft 43 , during the rotation of the rotating feed trough 44 , the fixed shaft 43 performs rotational scraping on the inner wall of the rotating feed trough 44 , thereby preventing the additive from adhering to the inner wall of the rotating feed trough 44 .

[0054] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0055] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lacquer processing equipment, characterized in that: include: A stirring tank (1), wherein a stirring tank cover (2) is provided above the stirring tank (1), a driving device (3) is fixedly mounted on the surface of the stirring tank cover (2), an additive filling pipe (22) is provided on the surface of the stirring tank cover (2), a docking cylinder (21) is connected to the bottom of the stirring tank cover (2), a connecting pipe (211) is connected to one side of the docking cylinder (21), a rotating cylinder (6) is provided at the bottom of the docking cylinder (21), a rotating shaft (61) is provided in the middle of the rotating cylinder (6), and the rotating shaft (61) is connected to the driving device ( 3), a plurality of stirring blades (64) are fixedly mounted on the outer side surface of the rotating cylinder (6), a spiral plate (62) is mounted inside the rotating cylinder (6), the spiral plate (62) is arranged between the inner wall of the rotating cylinder (6) and the rotating shaft (61), and the spiral plate (62) passes through both ends of the rotating cylinder (6), and the rotating cylinder (6) is provided with a feed port (63) at the bottom end of the spiral plate (62), and the spiral plate (62) is used to transport the material at the bottom of the rotating cylinder (6) to the top of the rotating cylinder (6); A rotating trough bracket (4), the rotating trough bracket (4) being arranged on the surface of the upper cover (2) of the mixing tank, a rotating feeding trough (44) being arranged inside the rotating trough bracket (4), the rotating feeding trough (44) being used to convey additives into the interior of the mixing tank (1); A filling hopper (5) is provided on the surface of the upper cover (2) of the stirring tank, a filter rack (52) is inserted into the interior of the filling hopper (5), a filter tank (521) is provided in the interior of the filter rack (52), and a filter plate (522) is installed at the bottom of the filter tank (521).

2. The lacquer processing equipment according to claim 1, characterized in that: A stirring tank bracket (11) is connected to the side of the stirring tank (1), and a discharge port (12) is fixedly provided at the bottom of the stirring tank (1).

3. The lacquer processing equipment according to claim 1, characterized in that: The surface of the trough bracket (4) is provided with an arc-shaped groove (46), and positioning grooves (461) are provided at both ends of the arc-shaped groove (46). The trough bracket (4) is connected to the additive filling pipe (22). A limit block (41) and a sealing plate (42) are fixedly installed on the inner wall of the trough bracket (4). A fixed shaft (43) is fixedly installed in the middle of the trough bracket (4), and a scraper (431) is fixedly installed on the surface of the fixed shaft (43).

4. The lacquer processing equipment according to claim 3, characterized in that: The two ends of the rotating feeding trough (44) are fixedly connected with rotating trough end plates (441), and the rotating trough end plates (441) are rotatably mounted on the surface of the fixed shaft (43). The outer side wall of the rotating feeding trough (44) is slidably fitted with the limit block (41) and the sealing plate (42), and the inner side wall of the rotating feeding trough (44) is slidably fitted with the scraper (431). A rotating trough control handle (442) is fixedly mounted on the surface of one group of the rotating trough end plates (441), and the rotating trough control handle (442) passes through the arc-shaped trough (46).

5. The lacquer processing equipment according to claim 4, characterized in that: An end cap (443) is installed at one end of the rotation groove control handle (442) away from the rotation groove end plate (441), and a control sleeve (45) is provided on the surface sliding sleeve of the end cap (443). An end of the control sleeve (45) close to the arc groove (46) is fixedly connected to a positioning sleeve (451), and the positioning sleeve (451) is inserted into the interior of the positioning groove (461). A compression spring (444) is provided between the positioning sleeve (451) and the end cap (443).

6. The lacquer processing equipment according to claim 5, characterized in that: The filter rack (52) slides through the upper cover (2) of the stirring tank, the top of the filter rack (52) is fixedly connected to a bucket cover (51), the top of the bucket cover (51) is equipped with a handle (511), one side of the filter rack (52) is in contact with the connecting pipe (211), and the filter tank (521) is connected to the connecting pipe (211).

7. A lacquer processing process is implemented by the processing equipment according to claim 1, specifically comprising: Step 1: Add the collected paint liquid into the interior of the mixing tank (1) through the filling hopper (5); Step 2: Start the driving device (3), which drives the rotating drum (6) to rotate via the rotating shaft (61) and the spiral plate (62). During the rotation of the rotating drum (6), the stirring blade (64) is driven to stir the paint liquid inside the stirring tank (1). At the same time, the paint liquid inside the stirring tank (1) enters the interior of the rotating drum (6) through the feed port (63), and is then transported to the interior of the docking drum (21) via the spiral plate (62); Step 3: The paint liquid entering the docking tube (21) enters the interior of the filter tank (521) through the connecting pipe (211), is filtered by the filter plate (522), and then flows back to the interior of the stirring tank (1) to participate in stirring, so that the urushiol in the paint liquid is accelerated to oxidize and polymerize; Step 4: After the paint liquid in the mixing tank (1) reaches a specified state through stirring, the additive is added to the inside of the rotary feed trough (44), and the rotary feed trough (44) is controlled to rotate so that the opening of the rotary feed trough (44) faces the inside of the mixing tank (1), so that the additive in the rotary feed trough (44) flows into the inside of the mixing tank (1) and mixes with the paint liquid, thereby completing the processing of the lacquer.

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