Coating mixing equipment

Abstract

The invention relates to coating mixing equipment, and belongs to the technical field of coating mixing. The device comprises a mixing tank, a stirring shaft, a material pushing plate set, an unlocking piece, a rotating mechanism and a driving mechanism, the mixing tank comprises a tank body and a top cover, a feeding port is formed in the top cover, the stirring shaft is located in the tank body and staggered from the feeding port, and the top cover comprises a supporting ring installed at the top of the tank body and a movable part rotationally installed in the middle of the supporting ring; the feeding port is formed in the movable part, the material pushing plate set is located below the feeding port, is installed on the movable part in a sliding mode in the radial direction of the tank body and comprises a first grid plate, a second grid plate, a first elastic piece and a locking piece, the first grid plate and the second grid plate are arranged in a grid staggered mode, the unlocking piece is installed on the movable part, and the rotating mechanism is located above the top cover, is in transmission connection with the movable part and is used for driving the movable part to rotate. The driving mechanism is located above the top cover and used for driving the pushing plate set to reciprocate in the radial direction of the tank body. According to the invention, powder and liquid can be mixed more uniformly, and the quality of the prepared coating is improved.

Description

Technical Field

[0001] This invention relates to the field of coating mixing technology, and more particularly to a coating mixing device. Background Technology

[0002] Coating engineering is a systematic project that involves applying paint to form a protective or decorative coating on the surface of an object. It is widely used in construction, industry, shipbuilding, automotive, and furniture industries. The core value of coating engineering lies in corrosion prevention, decoration, and functional enhancement. A complete coating project includes not only the spraying operation itself but also multiple stages such as pretreatment, coating, post-treatment, and quality control. Before coping, suitable paints need to be prepared. Paints are the material basis and technical core of coating engineering; their performance directly determines the coating effect, project lifespan, and cost-effectiveness.

[0003] In coating processes, some paint preparation involves mixing powdered raw materials with a liquid to produce high-quality paint. This process requires paint mixing equipment, which typically includes a container holding the liquid and a stirring shaft with blades. During use, the powdered raw materials are added to the container, and the stirring shaft rotates to mix the powdered raw materials evenly with the liquid.

[0004] For example, the patent with authorization announcement number CN112452236B discloses a stirring device for producing powder coatings. The stirring device includes a stirring tank, a stirring shaft extending vertically and into the stirring tank, stirring blades for stirring raw materials fixed on the stirring shaft, and a grinding body that can rotate with the stirring shaft.

[0005] Existing mixing devices typically have a powder inlet at the top of the mixing tank, which is usually offset from the mixing shaft. This results in some of the powder entering the mixing tank being distributed in the area near the inner wall of the tank. This portion of powder is far from the mixing shaft and experiences less shear force, making it difficult to disperse and prone to forming hard lumps. Undissolved lumps may also settle to the edge of the mixing tank, unable to participate in dissolution and mixing, leading to uneven mixing of powder and liquid and affecting the quality of the finished coating. Summary of the Invention

[0006] This invention provides a coating mixing device to solve the technical problem of uneven mixing in existing coating mixing and stirring devices.

[0007] To solve the above problems, the present invention provides a coating mixing device with the following technical solution: A coating mixing device includes a mixing tank, which includes a tank body and a top cover installed on the top of the tank body. The top cover is provided with a feed inlet, and the tank body is provided with a stirring shaft offset from the feed inlet. The top cover includes a support ring mounted on the top of the tank and a movable part rotatably mounted in the middle of the support ring. The inlet is located on the movable part. The paint mixing equipment also includes: The feeding mechanism is installed at the inlet and is used to add powder into the tank through the inlet; The pusher plate assembly, located below the feed inlet, is slidably mounted on the movable part along the radial direction of the tank body. It includes grid plate one and grid plate two with staggered grids, as well as elastic element one and locking element one. The elastic element one applies an elastic force to grid plate one and grid plate two to move away from each other, and the locking element can lock grid plate one and grid plate two when they come close to each other, so that grid plate one and grid plate two overcome the elastic force and overlap into a solid plate. The unlocking component is installed on the moving part, near the stirring shaft, and located on the moving path of the locking component; A rotating mechanism, located above the top cover, is connected to the moving part for driving the moving part to rotate; The drive mechanism, located above the top cover, is used to drive the pusher plate assembly to reciprocate radially along the tank body; After the powder enters through the inlet, the drive mechanism drives the pusher plate assembly to move toward the stirring shaft. The overlapping grid plate one and grid plate two push the powder toward the stirring shaft. The locking part unlocks when it moves to contact the unlocking part. After unlocking, grid plate one is ejected onto the inner wall of the tank by the action of elastic element one.

[0008] Using the above technical solution, the moving part drives the pusher plate assembly to rotate continuously inside the tank. Powder falls from the inlet into the tank containing liquid. The drive mechanism drives the pusher plate assembly to move towards the stirring shaft. At this time, grid plate one and grid plate two overlap to form a solid plate structure. The pusher plate assembly pushes the falling powder mixed in the liquid towards the stirring shaft, bringing the powder closer to the center of rotation, so that the powder can better participate in the shearing action and mix more evenly with the liquid. When the pusher plate assembly moves towards the stirring shaft until the locking and unlocking parts contact each other, the unlocking part unlocks the locking part. Grid plate one and grid plate two move away from each other under the action of elastic element one, causing grid plate one to move towards the inner wall of the tank. During the movement of grid plate one towards the inner wall of the tank, it picks up the clumps of powder in the tank. When grid plate one moves to the inner wall of the tank, it cooperates with the inner wall of the tank to crush the clumps of powder. Subsequently, grid plate two is driven by the drive mechanism to reset towards the inner wall of the tank. During this process, it picks up the clumps of powder in the tank again. When grid plate two moves to overlap with grid plate one, it crushes the picked-up clumps of powder. When the first and second grid plates rotate against the inner wall of the tank, they can also scrape off the powder adhering to the inner wall of the tank, thereby reducing powder loss and allowing the powder and liquid to mix more fully and evenly.

[0009] Furthermore, the locking component includes a support body and a movable locking block. The support body is fixed on the first grid plate, and the movable locking block is elastically slidably mounted on the support body. In its natural state, the movable locking block protrudes from the side of the support body. There is a gap between the movable locking block and the first grid plate. The movable locking block is provided with an unlocking ramp. The second grid plate is provided with a through hole for the support body to pass through. When the first grid plate and the second grid plate approach each other, the second grid plate is locked in the gap between the first grid plate and the movable locking block by pushing the unlocking ramp over the movable locking block.

[0010] Using the above technical solution, when the movable block extends to the outside of the support body, it can lock the second grid plate between the first grid plate and the movable block. When the movable block is retracted into the support body, the first grid plate and the second grid plate are unlocked. The structure is simple and easy to lock and unlock.

[0011] Furthermore, the unlocking component includes an unlocking column, which is located on the movement path of the movable block. When the unlocking column contacts the movable block, it pushes the movable block into the support body through the push-unlocking ramp. The first grid plate and the second grid plate move away from each other under the action of the elastic element.

[0012] Furthermore, the feeding mechanism includes a storage bin, a baffle plate, and a feeding fork. The storage bin is installed above the inlet, the baffle plate is installed inside the inlet, and the baffle plate has multiple parallel discharge channels. The feeding fork has multiple spaced teeth, each tooth passing through a discharge channel. The tips of the teeth extend into the storage bin, and the feeding fork can slide back and forth along the discharge channel, causing the powder in the storage bin to fall into the tank through the discharge channel.

[0013] By adopting the above technical solution, a baffle plate is installed at the inlet to slow down the falling speed of powder in the storage bin, reducing the amount of powder added per unit time and allowing for more thorough mixing between powder and liquid. A fork is installed that moves back and forth within the discharge channel to agitate the powder in the storage bin, facilitating its descent and preventing blockages. When the fork moves to the end of the discharge channel, it engages with the inner wall of the storage bin to break up any clumps of powder, allowing for better mixing.

[0014] Furthermore, a rod extending radially along the tank body is connected to the first grid plate, and a sleeve is connected to the second grid plate. The sleeve is slidably fitted on the outside of the rod, and an elastic element is connected between the rod and the sleeve.

[0015] By adopting the above technical solution, the addition of rods and sleeves facilitates the connection of elastic element one between grid plate one and grid plate two, allowing grid plate one and grid plate two to maintain overlap while also making it easier to add elastic element one between grid plate one and grid plate two. At the same time, the rods and sleeves also serve as guides, making the relative movement between grid plate one and grid plate two more stable.

[0016] Furthermore, the drive mechanism includes a drive motor and a rotating body that is connected to the drive motor for transmission. The rotating body is rotatably mounted on the movable part about a vertically extending rotation axis. The rotating body includes two rotating plates arranged vertically and spaced apart, and a connecting shaft connecting the two rotating plates. The connecting shaft is offset from the rotation axis of the rotating body. The end of the sleeve away from the second grid plate is vertically connected to a guide rail. The guide rail is provided with a strip-shaped sliding hole that runs vertically through it. The connecting shaft passes through the strip-shaped sliding hole. When the rotating body rotates, it drives the sleeve to reciprocate along the radial direction of the tank through the connecting shaft and the guide rail.

[0017] Using the above technical solution, when the rotating body rotates, the connecting shaft revolves around the rotation axis of the rotating body, driving the guide rail to move back and forth. The guide rail drives the sleeve and the pusher plate assembly to move back and forth along the radial direction of the tank, thereby driving the pusher plate assembly. The transmission structure is simple.

[0018] Furthermore, the discharge channel extends radially along the tank body, and the feeding fork is connected to the sleeve.

[0019] With the above technical solution, the feeding fork is connected to the sleeve. As the sleeve moves radially back and forth along the tank, there is no need to set up a separate drive structure to drive the feeding fork, which can save power costs.

[0020] Furthermore, the rotation axis of the rotating body coincides with the central axis of the tank, and the stirring shaft is connected to the rotating plate located below, with the axis of the stirring shaft coinciding with the rotation axis of the rotating body.

[0021] By adopting the above technical solution, the drive mechanism can drive the stirring shaft to rotate while driving the pusher plate assembly, which can save power components, simplify the equipment structure, and reduce power costs.

[0022] Furthermore, the rotating mechanism includes a rotating motor and a gear set. The gear set includes a driving gear and a driven gear that mesh with each other. The driving gear is connected to the rotating motor for transmission, and the driven gear is coaxially connected to the moving part to prevent rotation.

[0023] Furthermore, both grid plate one and grid plate two are arc-shaped.

[0024] Using the above technical solution, the solid plate structure after the grid plate one and grid plate two are overlapped also becomes arc-shaped. When the pusher plate group moves toward the stirring shaft, it is easier for the powder in the liquid to gather and be pushed toward the stirring shaft.

[0025] The beneficial effects of the coating mixing device provided by this invention are as follows: This invention uses a pusher plate assembly to push powder falling into the liquid towards the stirring shaft, bringing the powder closer to the center of rotation. This ensures the powder receives sufficient shear force, resulting in more thorough mixing between the powder and the liquid. By configuring the pusher plate assembly into a structure including two grid plates, the invention utilizes the repositioning of grid plates towards the inner wall of the tank to scoop up powder clumps from the liquid. The squeezing action between grid plates and the inner wall of the tank further breaks up these clumps, resulting in a more uniform mixture and preventing powder clumps from failing to participate in the mixing process. This invention uses the same power source to drive the stirring shaft and the pusher plate assembly, saving on power components and simplifying the equipment structure. Attached Figure Description

[0026] Figure 1 A three-dimensional structural diagram of a coating mixing device provided by the present invention; Figure 2 A cross-sectional view of a coating mixing device provided by the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 A perspective view of a top cover and a structure mounted on the top cover in a coating mixing device provided by the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 A front view of a second grid plate in a coating mixing device provided by the present invention; Figure 7 A top view of a second grid plate in a coating mixing device provided by the present invention; Figure 8 A front view of a grid plate in a coating mixing device provided by the present invention; Figure 9 A top view of a grid plate in a coating mixing device provided by the present invention; Figure 10 This is a schematic diagram of the structure of a coating mixing device provided by the present invention when the first grid plate and the second grid plate are locked by a locking component.

[0027] Explanation of reference numerals in the attached figures: 1. Tank body; 2. Top cover; 201. Support ring; 202. Moving part; 203. Observation window; 3. Support frame; 301. Support plate; 4. Rotating motor; 5. Drive motor; 6. Driving gear; 7. Driven gear; 8. Sleeve; 9. Main shaft; 10. Storage bin; 11. Stirring shaft; 12. Stirring blades; 13. Rotating plate; 14. Connecting shaft; 15. Guide rail; 151. Strip-shaped sliding hole; 16. Elastic component two; 17. Elastic component one; 18. Sleeve; 19. Rod; 20. Connecting block; 21. Unlocking column 22. Slide rail; 221. Vertical connecting plate; 222. Horizontal sliding plate; 23. Material fork; 24. Material stop plate; 241. Discharge channel; 25. Grid plate two; 251. Arc-shaped connecting plate two; 252. Grid bar two; 253. Grid grid two; 254. Perforation; 255. Slot two; 26. Elastic element three; 27. Arc-shaped baffle; 28. Grid plate one; 281. Arc-shaped connecting plate one; 282. Grid bar one; 283. Grid grid one; 284. Slot one; 29. ​​Movable locking block; 291. Pushing inclined surface; 30. Support body. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] The following is one embodiment of a coating mixing device provided by the present invention: like Figures 1-10 As shown, a coating mixing device includes a mixing tank, a feeding mechanism, a pusher plate assembly, an unlocking component, a rotating mechanism, a drive mechanism, and a stirring shaft 11.

[0030] like Figure 1 , Figure 2 As shown, the mixing tank includes a tank body 1 and a top cover 2. The tank body 1 is placed on the ground, and its main body is cylindrical with an open top. An inverted U-shaped support frame 3 is connected to the tank body 1. The support frame 3 includes a horizontal support plate 301, which is located directly above the top cover 2.

[0031] The top cover 2 includes a support ring 201 and a movable part 202. The support ring 201 is coaxial with the tank body 1 and is installed on the top of the tank body 1 by connecting bolts. The movable part 202 is coaxial with the support ring 201 and is rotatably installed in the middle of the support ring 201.

[0032] like Figure 1 , Figure 2 , Figure 3As shown, a sleeve 8 is coaxially connected to the upper part of the movable part 202, and the sleeve 8 is connected to the lower part of the movable part 202. The movable part 202 is also provided with a through-hole and an observation window 203. Powder can be put into the tank 1 through the inlet, and the internal condition of the tank 1 can be observed through the observation window 203. Water can also be injected into the tank 1 through the observation window 203.

[0033] like Figure 3 , Figure 4 As shown, the bottom of the movable part 202 is provided with two symmetrical L-shaped slide rails 22 arranged on both sides of the feed inlet. The slide rails 22 include a vertical connecting plate 221 and a horizontal sliding plate 222. A sliding space extending radially along the tank body 1 is formed between the two slide rails 22.

[0034] The feeding mechanism includes a storage bin 10, a baffle plate 24, and a feeding fork 23. The storage bin 10 is installed above the feed inlet, and both the top and bottom of the storage bin 10 are open. Figure 3 , Figure 5 As shown, a baffle plate 24 is installed at the inlet, and the baffle plate 24 has multiple vertically penetrating discharge channels 241, the extension direction of which is consistent with the radial direction of the tank body 1. The inner cavity of the storage box 10 is connected to the inner cavity of the tank body 1 through the discharge channels 241. The fork 23 includes multiple evenly spaced fork teeth, each fork tooth passing through each discharge channel 241, with the tip of the fork tooth extending into the storage box 10. The fork 23 can move back and forth along the discharge channels 241 to push the powder in the storage box 10 out through the discharge channels 241.

[0035] The pusher plate assembly is located in the sliding space and includes a grid plate 28, a grid plate 25, an elastic element 17, and a locking element.

[0036] like Figure 8 , Figure 9 As shown, the grid plate 28 includes an arc-shaped connecting plate 281 and multiple grid strips 282. The multiple grid strips 282 are all connected to the bottom of the arc-shaped connecting plate 281 and are evenly spaced along the arc direction of the arc-shaped connecting plate 281. The interval between two adjacent grid strips 282 is called a grid 283. Slots 284 are provided on the outer sides of the two grid strips 282 located at the edge. The two slots 284 on the grid plate 28 are respectively engaged with the two horizontal sliding plates 222, thereby allowing the grid plate 28 to slide along the movable space.

[0037] like Figure 6 , Figure 7As shown, the second grid plate 25 includes an arc-shaped connecting plate 251 and multiple grid strips 252. A through hole 254 is provided in the middle of the arc-shaped connecting plate. A slot 255 is provided on each side of the arc-shaped connecting plate 251. The two slots 255 are respectively engaged with the two horizontal sliding plates 222, allowing the second grid plate 255 to slide along the movable space. The multiple grid strips 252 are connected to the outer wall of the arc-shaped connecting plate 251 and are evenly distributed along the arc direction of the arc-shaped connecting plate 251. The interval between two adjacent grid strips 252 is called a grid 253. The width of the second grid strip 252 is equal to the width of the first grid strip 282, the width of the second grid 253 is equal to the width of the first grid 283, and the width of the first grid 283 is equal to the width of the second grid strip 252.

[0038] like Figure 10 As shown, the grid 1 283 and grid 253 are arranged alternately, and grid 1 28 and grid 25 can be overlapped and spliced ​​into a solid arc-shaped plate. The outer wall of the solid arc-shaped plate spliced ​​by grid 1 28 and grid 25 can fit against the inner wall of the tank 1.

[0039] like Figure 3 , Figure 4 , Figure 5 As shown, a rod 19 extending radially along the tank 1 is connected to the side of the grid plate 28 facing the center of the tank 1, and a sleeve 18 extending radially along the tank 1 is connected to the side of the grid plate 25 facing the center of the tank 1. The sleeve 18 is slidably sleeved on the outside of the rod 19, and the end of the sleeve 18 facing away from the grid plate 25 is closed.

[0040] The bottom of the aforementioned feeding fork 23 is slidably sleeved on the outside of the sleeve 18. An elastic element 26 connects the feeding fork 23 and the grid plate 25. An arc-shaped baffle 27 is also connected to the feeding fork 23. The arc-shaped baffle 27 is located above the elastic element 26 and is used to prevent falling powder from getting stuck in the elastic element 26. The elastic element 26 acts as a buffer to prevent the feeding fork 23 from colliding violently with the storage box 10 when it moves to the end of the discharge channel 241.

[0041] like Figure 3 As shown, elastic element 17 is connected between sleeve 18 and rod 19. Elastic element 17 is a compression spring that can extend radially along the tank body 1.

[0042] like Figure 5 , Figure 8 , Figure 9 , Figure 10As shown, the locking mechanism includes a support body 30 and two movable blocks 29. The support body 30 is fixedly connected to the side wall of the grid plate 28 facing the center of the tank 1. The two movable blocks 29 are arranged on both sides of the support body 30 and can slide on the support body 30. There is a radial gap between the two movable blocks 29 and the grid plate 28. An elastic element 26, which is a compression spring, connects the movable blocks 29 and the support body 30. Under the action of the elastic element 26, the movable blocks 29 are kept extended to the outside of the support body 30. When the movable blocks 29 are compressed, they can be completely retracted into the support body 30. The movable locking block 29 has a pushing slope 291 on the side facing the center of the tank body 1. The second grid plate 25 has a through hole 254 that extends radially along the tank body 1, corresponding to the support body 30. When the first grid plate 28 and the second grid plate 25 approach each other, the second grid plate 25 can push the movable locking block 29 into the support body 30 through the pushing slope 291, so that the support body 30 passes through the through hole 254. After the second grid plate 25 moves into the gap between the movable locking block 29 and the first grid plate 28, the movable locking block 29 resets and extends to the outside of the support body 30 to block the second grid plate 25 and lock the second grid plate 25 and the first grid plate 28.

[0043] like Figure 4 , Figure 5 As shown, the unlocking component is installed at the bottom of the movable part 202 and is located on the moving path of the locking component. The unlocking component includes a connecting block 20 connected to the movable part 202 and two spaced unlocking columns 21 connected to the bottom of the connecting block 20. The two unlocking columns 21 have arc-shaped unlocking surfaces on their adjacent sides. The two arc-shaped unlocking surfaces correspond to the two pushing inclined surfaces 291 respectively. When the locking component moves to contact the unlocking component, the two arc-shaped unlocking surfaces on the two unlocking columns 21 push the two movable blocks 29 through the two pushing inclined surfaces 291 respectively, so that the movable blocks 29 are inserted into the support body 30, thereby unlocking the first grid plate 28 and the second grid plate 25. After the first grid plate 28 and the second grid plate 25 are unlocked, the first grid plate 28 is elastically reset towards the inside of the tank body 1 under the elastic action of the elastic element 17.

[0044] The aforementioned sleeve 18 is slidably inserted on the connecting block 20, and the connecting block 20 guides the sleeve 18, making the sliding of the sleeve 18 more stable.

[0045] like Figures 1-4 As shown, the rotating mechanism includes a rotating motor 4 and a gear set. The rotating motor 4 is fixedly mounted on the support plate 301. The gear set includes a driving gear 6 and a driven gear 7 that mesh with each other. The driving gear 6 is connected to the output shaft end of the rotating motor 4 to prevent rotation. The driven gear 7 is fixedly fitted on the outside of the sleeve 8. The rotating motor 4 drives the driving gear 6 to rotate, and the driving gear 6 drives the driven gear 7 to rotate, thereby driving the movable part 202 to rotate.

[0046] The drive mechanism includes a drive motor 5, a main shaft 9, a rotating body, and a guide rail 15. The drive motor 5 is fixedly mounted on the support plate 301. The main shaft 9 passes through the sleeve 8 and is connected to the output shaft of the drive motor 5 with a stop connection. The bottom end of the main shaft 9 extends below the movable part 202. The rotating body includes two rotating plates 13 and a connecting shaft 14. The rotating plates 13 are circular and are arranged vertically at intervals while remaining coaxial. The connecting shaft 14 connects the two rotating plates 13 and is offset from the central axis of the rotating plates 13. The upper rotating plate 13 is coaxially connected to the bottom end of the main shaft 9. The guide rail 15 is elongated and has a through-hole 151. The guide rail 15 is vertically connected to the end of the sleeve 18 facing away from the second grid plate 25. The connecting shaft 14 passes through the through-hole 151.

[0047] When the drive motor 5 rotates, it drives the rotating body to rotate. The connecting shaft 14 revolves around the central axis of the rotating body, which drives the guide rail 15 to move back and forth along the radial direction of the tank 1, and in turn drives the sleeve 18 to move back and forth along the radial direction of the tank 1.

[0048] The stirring shaft 11 is located inside the tank 1 and is coaxially connected to the bottom of the rotating plate 13 located below. The bottom end of the stirring shaft 11 is provided with stirring blades 12.

[0049] The rotational speed of the rotating body is higher than that of the movable part 202. There is a speed difference between the rotating body and the movable part 202, which allows the rotating body to rotate relative to the movable part 202, thereby ensuring that the guide rail 15 can be pulled by the connecting shaft 14 to move radially along the tank body 1.

[0050] In use, a set amount of water is injected into the tank 1 through the observation window 203, and an appropriate amount of powder is loaded into the storage bin 10. The rotating motor 4 and the drive motor 5 are started. The rotating motor 4 drives the movable part 202 and the storage bin 10 and the pusher plate assembly connected to the movable part 202 to revolve around the center of the tank 1. The drive motor 5 drives the rotating body to rotate, which drives the stirring shaft 11 to rotate. At the same time, it drives the sleeve 18 to move back and forth radially along the tank 1, which in turn drives the pusher plate assembly to move back and forth radially along the tank 1. For every rotation of the rotating body, the pusher plate assembly moves back and forth radially along the tank 1 once. When the sleeve 18 moves, it drives the feeding fork 23 to move back and forth radially along the tank 1. The fork teeth push the powder in the storage bin 10, promoting the powder to fall into the tank 1 from the discharge channel 241. During the movement of the fork teeth, the lumpy powder in the storage bin 10 can also be screened out. When the fork teeth move to the end of the discharge channel 241, the fork teeth cooperate with the inner wall of the storage bin 10 to crush the lumpy powder. After the lumpy powder is crushed, it can fall smoothly through the discharge channel 241.

[0051] During the radial reciprocating movement of the sleeve 18 along the tank 1, it also drives the pusher plate assembly to reciprocate radially along the tank 1. As the pusher plate assembly moves from the side wall of the tank 1 toward the stirring shaft 11, the arc-shaped solid plate formed by the first grid plate 28 and the second grid plate 25 can push the powder falling into the tank 1 from the inlet toward the stirring shaft 11, making the powder closer to the center of rotation, enhancing the shearing effect on the powder, and making the powder and liquid mix more evenly. When the pusher plate assembly moves to the point where the locking part contacts the unlocking part, the unlocking column 21 pushes the movable locking block 29 into the support body 30 through the pushing inclined surface 291. At this time, the first grid plate 28 moves toward the inner wall of the tank 1 under the action of the elastic element 17. During the movement of the first grid plate 28, it scoops up the clumps of powder in the tank 1. When the first grid plate 28 contacts the inner wall of the tank 1, it cooperates with the inner wall of the tank 1 to crush the scooped-up clumps of powder. After the grid plate 28 is attached to the inner wall of the tank 1, it rotates against the inner wall of the tank 1 to scrape off the powder adhering to the inner wall of the tank 1, so that this part of the powder can participate in the mixing.

[0052] After grid plate 28 is reset, grid plate 25 is reset towards the inner wall of tank 1 under the action of sleeve 18. During this process, grid plate 25 continues to scoop up the agglomerated powder in tank 1, and when it moves to contact the inner wall of tank 1, it works with the inner wall of tank 1 and grid plate 28 to crush the agglomerated powder. Since grid plate 25 can work with grid plate 28 to shear the agglomerated powder at this time, the agglomerated powder is more easily crushed. Subsequently, grid plate 25 pushes the movable locking block 29 into the support body 30 through the pushing inclined surface 291, thereby passing over the movable locking block 29 and being locked between the movable locking block 29 and grid plate 28. Grid plate 28 and grid plate 25 are locked again.

[0053] The above steps are then repeated, with the pusher plate group moving back and forth to push the powder toward the center of rotation, and picking up clumps of powder for crushing and extrusion, so that the powder is fully involved in the mixing.

[0054] This invention can pulverize agglomerated powder in the storage tank 10 and also break up agglomerated powder entering the tank 1, allowing the powder to participate more fully in the mixing with the liquid. The pusher plate assembly in this invention can also push the powder towards the center of rotation, enhancing the shearing effect on the powder during the stirring process and enabling a more uniform mixing of the powder and liquid. The drive mechanism in this invention can simultaneously drive the stirring shaft 11 to rotate and drive the pusher plate assembly to move, saving power components and simplifying the equipment structure.

[0055] In this embodiment, the locking component includes a support body 30 and a movable latch 29 that is elastically slidably mounted on the support body 30. The unlocking component includes an unlocking column 21. In other embodiments, the locking component is an electromagnet with an on / off switch. The unlocking component is a push rod. When the first grid plate 28 and the second grid plate 25 are located on the inner wall of the tank 1, the electromagnet is energized and becomes magnetic, causing the first grid plate 28 and the second grid plate 25 to be attracted and overlapped. When the first grid plate 28 and the second grid plate 25 move close to the stirring shaft 11, the push rod contacts the on / off switch and presses the on / off switch, causing the electromagnet to be de-energized. The first grid plate 28 and the second grid plate 25 move away from each other under the elastic action of the elastic element 17, and the first grid plate 28 moves toward the inner wall of the tank 1.

[0056] In this embodiment, the feeding mechanism includes a storage box 10, a baffle plate 24, and a fork 23. The storage box 10 is installed above the inlet, the baffle plate 24 is installed at the inlet, and the fork teeth on the fork 23 pass through the discharge channel 241 on the baffle plate 24. The fork moves back and forth along the discharge channel 241 to make the powder in the storage box 10 fall down one after another. In other embodiments, the feeding mechanism includes a discharge box and a discharge auger. The storage box 10 is installed on the side of the inlet, the inlet of the discharge auger is connected to the inner cavity of the storage box 10, and the outlet of the discharge auger is located directly above the inlet. When the discharge auger is running, it drives the powder in the storage box 10 to move toward the outlet of the discharge auger and fall toward the inlet into the tank 1.

[0057] In this embodiment, the driving mechanism includes a drive motor 5, a rotating body, and a guide rail 15. The driving mechanism can not only drive the pusher plate assembly to move back and forth radially along the tank 1, but also drive the stirring shaft 11 to rotate simultaneously. In other embodiments, the driving mechanism adopts a linear cylinder, and the end of the sleeve 18 is connected to the output end of the linear cylinder. The pusher plate assembly is driven to move back and forth through the linear cylinder. In this case, the driving mechanism cannot drive the stirring shaft 11 to rotate simultaneously, and a separate rotary driving mechanism is required to drive the stirring shaft 11 to rotate.

Claims

1. A coating mixing device, comprising a mixing tank, the mixing tank including a tank body and a top cover installed on the top of the tank body, the top cover having a feed inlet, and a stirring shaft offset from the feed inlet being provided inside the tank body; Its features are, The top cover includes a support ring mounted on the top of the tank and a movable part rotatably mounted in the middle of the support ring. The inlet is located on the movable part. The paint mixing equipment also includes: The feeding mechanism is installed at the inlet and is used to add powder into the tank through the inlet; The pusher plate assembly, located below the feed inlet, is slidably mounted on the movable part along the radial direction of the tank body. It includes grid plate one and grid plate two with staggered grids, as well as elastic element one and locking element one. The elastic element one applies an elastic force to grid plate one and grid plate two to move away from each other, and the locking element can lock grid plate one and grid plate two when they come close to each other, so that grid plate one and grid plate two overcome the elastic force and overlap into a solid plate. The unlocking component is installed on the moving part, near the stirring shaft, and located on the moving path of the locking component; A rotating mechanism, located above the top cover, is connected to the moving part for driving the moving part to rotate; The drive mechanism, located above the top cover, is used to drive the pusher plate assembly to reciprocate radially along the tank body; After the powder enters through the inlet, the drive mechanism drives the pusher plate assembly to move toward the stirring shaft. The overlapping grid plate one and grid plate two push the powder toward the stirring shaft. The locking part unlocks when it moves to contact the unlocking part. After unlocking, grid plate one is ejected onto the inner wall of the tank by the action of elastic element one.

2. The coating mixing equipment according to claim 1, characterized in that, The locking component includes a support body and a movable locking block. The support body is fixed on the first grid plate, and the movable locking block is elastically slidably mounted on the support body. In its natural state, the movable locking block protrudes from the side of the support body. There is a gap between the movable locking block and the first grid plate. The movable locking block is provided with an unlocking ramp. The second grid plate is provided with a through hole for the support body to pass through. When the first grid plate and the second grid plate are close to each other, the second grid plate is pushed over the movable locking block by the unlocking ramp and is locked in the gap between the first grid plate and the movable locking block.

3. The coating mixing equipment according to claim 2, characterized in that, The unlocking component includes an unlocking column, which is located on the moving path of the movable block. When the unlocking column contacts the movable block, it pushes the movable block into the support body by pushing the unlocking ramp. The first grid plate and the second grid plate move away from each other under the action of the elastic element.

4. A coating mixing device according to any one of claims 1-3, characterized in that, The feeding mechanism includes a storage bin, a baffle plate, and a feeding fork. The storage bin is installed above the inlet, the baffle plate is installed inside the inlet, and the baffle plate has multiple parallel discharge channels. The feeding fork has multiple spaced teeth, each tooth passing through a discharge channel. The tips of the teeth extend into the storage bin, and the feeding fork can slide back and forth along the discharge channel to move the powder in the storage bin into the tank through the discharge channel.

5. The coating mixing equipment according to claim 4, characterized in that, A rod extending radially along the tank body is connected to a grid plate one, and a sleeve is connected to a grid plate two. The sleeve is slidably fitted on the outside of the rod, and an elastic element one is connected between the rod and the sleeve.

6. A coating mixing device according to claim 5, characterized in that, The drive mechanism includes a drive motor and a rotating body that is connected to the drive motor. The rotating body is rotatably mounted on the movable part about a vertically extending rotation axis. The rotating body includes two rotating plates arranged vertically and spaced apart, and a connecting shaft connecting the two rotating plates. The connecting shaft is offset from the rotation axis of the rotating body. The end of the sleeve away from the second grid plate is vertically connected to a guide rail. The guide rail is provided with a strip-shaped sliding hole that runs vertically through it. The connecting shaft passes through the strip-shaped sliding hole. When the rotating body rotates, it drives the sleeve to reciprocate along the radial direction of the tank through the connecting shaft and the guide rail.

7. A coating mixing device according to claim 6, characterized in that, The discharge channel extends radially along the tank body, and the feeding fork is connected to the sleeve.

8. A coating mixing device according to claim 7, characterized in that, The rotation axis of the rotating body coincides with the central axis of the tank, and the stirring shaft is connected to the rotating plate located below, with the axis of the stirring shaft coinciding with the rotation axis of the rotating body.

9. A coating mixing device according to claim 8, characterized in that, The rotating mechanism includes a rotating motor and a gear set. The gear set includes a driving gear and a driven gear that mesh with each other. The driving gear is connected to the rotating motor for transmission, and the driven gear is coaxially connected to the moving part to prevent rotation.

10. A coating mixing device according to any one of claims 1-3, characterized in that, Both grid plate one and grid plate two are arc-shaped.

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