A paint filling device

Abstract

The application relates to the technical field of paint filling, in particular to a paint filling device which comprises a storage tank, a filling pipeline in communication with the storage tank and a control valve arranged on the filling pipeline, the filling pipeline is vertically arranged and used for filling paint into a container, a rotatable scraper mechanism is arranged on the filling pipeline, the scraper mechanism comprises at least one scraper, a driving assembly arranged on the filling pipeline and connected with the scraper; the scraper rotates on the inner wall of the filling pipeline and can rotate with the driving assembly after filling is completed to scrape off residual paint on the inner wall of the filling pipeline. The application has the effects of reducing pollution of a construction environment, improving the neatness of a transportation device, reducing paint waste, reducing cleaning burden and improving filling efficiency.

Description

Technical Field

[0001] This application relates to the technical field of paint filling, and in particular to a paint filling apparatus. Background Technology

[0002] After processing, coatings are typically stored temporarily in large tanks to facilitate subsequent packaging and transportation. When filling is required, the coatings are transferred from the storage tanks to smaller containers (such as cans or bottles) via a conveyor system, thus completing the final packaging of the product. This process is a crucial step in the coating production process, directly impacting product quality and efficiency.

[0003] Existing paint filling equipment typically includes a storage tank, a pumping system, and filling pipelines. The filling pipelines are usually vertically installed, with valves at the lower end to control the paint flow. During the filling process, paint flows from the storage tank through the pumping system into the filling pipeline, and then through the valves into the containers to be filled. When the containers reach their predetermined capacity, the valves close, stopping the paint supply. This structure is simple, easy to operate, and widely used in paint production lines.

[0004] However, existing technology has obvious drawbacks: after the valve of the filling pipeline is closed, a small amount of paint often remains on the inner wall of the pipeline. Under the action of gravity, this residual paint is easy to drip or spill from the bottom of the pipeline, which not only pollutes the construction environment, but may also contaminate the filling equipment or transport containers, affecting the cleanliness of the transport equipment, and even leading to paint waste. In addition, the spilled paint may form dirt after drying, increasing the cleaning burden and reducing filling efficiency. Summary of the Invention

[0005] This application provides a paint filling device that can at least partially solve the above-mentioned technical problems.

[0006] This application provides a paint filling device, which adopts the following technical solution: A paint filling device includes a storage tank, a filling pipe communicating with the storage tank, and a control valve disposed on the filling pipe. The filling pipe is vertically arranged for filling paint into the container. A rotatable scraper mechanism is provided on the filling pipe. The scraper mechanism includes at least one scraper and a drive assembly disposed on the filling pipe and connected to the scraper. The scraper rotates on the inner wall of the filling pipe and can rotate with the drive assembly after filling to scrape off the paint residue on the inner wall of the filling pipe.

[0007] By adopting the above technical solution, during the filling operation, the paint flows normally into the container below through the filling pipe. After filling is completed and the control valve is closed, the drive component starts, causing the scraper to rotate on the inner wall of the filling pipe. During the rotation, the edge or surface of the scraper contacts the inner wall of the pipe, scraping off any residual paint adhering to the inner wall, thus reducing paint spillage on the inner wall after the pipe is closed. This active scraping method significantly reduces or even eliminates paint dripping, thereby avoiding pollution of the construction environment, damage to the cleanliness of transportation equipment, and paint waste. It improves the cleanliness and automation level of the filling process, reducing subsequent cleaning and maintenance costs. Furthermore, the scraped paint flows into the container, reducing resource waste and further lowering costs.

[0008] Optionally, two scrapers are provided, and the two scrapers abut against each other and move in opposite directions or towards each other.

[0009] By adopting the above technical solution, the two scrapers, under the control of the drive assembly, can move in opposite directions from an initial mutually abutting state (e.g., jointly closing the pipe cross section) to allow the paint to flow down normally; or, during scraping, they can move towards each other from both sides of the pipe and finally abut again, jointly completing the circumferential scraping of the entire inner wall of the pipe. The setting of two scrapers greatly improves the efficiency and thoroughness of scraping. Compared with a single scraper, the double scraper structure can cover a larger inner wall area, and through opposite or backward movements, it can more effectively gather and remove residual paint from the periphery to the center, ensuring thorough cleaning without dead corners; it can also shorten the finishing time of filling, improve filling efficiency, quickly complete the accumulation of paint on the inner wall of the pipe, and further reduce the availability of paint.

[0010] Optionally, both scrapers are inclined, and the two scrapers abut against each other and form a guide channel after the scraping action is completed.

[0011] By adopting the above technical solution, the two scrapers are not set parallel to the pipe axis, but are inclined at a certain angle. When they complete the scraping action and finally come into contact, their inclined shape together forms a guide channel similar to a "V" or funnel. This structure brings additional flow guiding function. The scraped paint will be efficiently guided and collected in the formed guide channel along the inclined scraper surface, and then flow out downwards. This reduces the disorderly dripping of scraped paint on the flat plate, ensures that the residual paint can be discharged in a controllable and orderly manner, and further enhances the anti-spillage effect.

[0012] Optionally, the two scrapers are provided with a sealing plate on the side near the storage tank. The two sealing plates are inclined and guide the coating towards the filling tank when the two scrapers initially come into contact.

[0013] By adopting the above technical solution, an inclined sealing plate is set on the upper part of the two scrapers (on the side closer to the storage tank); when the two scrapers are in the initial contact state (i.e., before or just after filling begins), the two sealing plates also move closer together to form an upward "roof" structure; the sealing plate plays a key "anti-drip valve" role, which can reduce the material adhering to the inner side of the two scrapers during filling, reducing the possibility of difficulty in cleaning, and guide the coating during filling to reduce resistance, thus forming a "double anti-drip" mechanism, which greatly improves the sealing and cleanliness of the device and further reduces coating waste.

[0014] Optionally, a positioning block is provided at the end of the scraper away from the storage tank, and the positioning block is used to position the container to be filled.

[0015] By adopting the above technical solution, a positioning block is set at the lower end of the scraper. Before filling, the operator pushes the opening of the container to be filled (such as a barrel or can) upward until it contacts the positioning block. This solves the problem of misalignment between the container opening and the filling pipe during filling. The positioning block ensures that an optimal and fixed distance is maintained between the container opening and the pipe outlet. This not only prevents paint from splashing during filling, but also avoids spillage caused by container movement or tilting. This is an auxiliary function that improves the convenience of operation and filling accuracy.

[0016] Optionally, the end of the scraper that contacts the filling pipe is in the shape of an inclined blade. When the scraping action of the two scrapers is completed, the blade-shaped ends of the two scrapers cooperate to squeeze the coating into the guide channel.

[0017] By adopting the above technical solution, the edge of the scraper that contacts the inner wall of the pipe is designed as an inclined blade. When the two scrapers move towards each other and finally come into contact, their blade-shaped ends not only scrape the inner wall but also cooperate with each other, squeezing and shearing the paint accumulated in the middle like scissors. The blade-shaped structure reduces the contact area between the scraper and the inner wall of the pipe, increases the local pressure, and makes the scraping more thorough, especially for viscous or semi-dry paint. The cooperative squeezing of the two blade-shaped ends can "shovel" the highly adhesive paint away from the inner wall and forcefully push it into the formed guide channel, greatly improving the adaptability to high-viscosity paint and the scraping efficiency.

[0018] Optionally, the drive assembly includes a drive motor, a gear, a gear ring, and a meshing gear ring. The gear ring is connected to one of the scrapers, and the meshing gear ring is connected to the other scraper. The drive motor is mounted on the pipe, and the gear is mounted on the output shaft of the drive motor. Both the gear ring and the meshing gear ring mesh with the gear and move in opposite directions.

[0019] By adopting the above technical solution, the drive motor starts, driving the gear on its output shaft to rotate. This gear simultaneously meshes with a gear ring and a meshing gear ring; according to the principle of gear transmission, the gear ring and the meshing gear ring drive the two scrapers connected to them to perform precise and synchronous reverse movements; this allows the two scrapers to move in opposite directions strictly according to a predetermined trajectory, with good synchronization and smooth operation; combined with the blade-shaped scraper, it can provide the necessary and stable driving force for the scraper's extrusion action, which is the foundation for the reliable realization of the entire mechanical action.

[0020] Optionally, the scraper and the drive assembly are connected by a telescopic assembly. When the two scrapers collide, the telescopic assembly extends, causing the scraper to drive the paint to flow.

[0021] By adopting the above technical solution, a telescopic component is added between the drive component and the scraper. When the two scrapers move to the position where they collide, the drive component continues to provide power. At this time, the telescopic component begins to extend under pressure, pushing the scraper to move a short distance downstream (i.e., towards the pipe outlet). This action gives the scraper a "pushing" function. It not only scrapes but also actively pushes the accumulated paint droplets downward away from the pipe outlet in the final stage, ensuring that the residual paint is completely removed from the pipe and will not be sucked back or hung on the edge of the outlet due to surface tension. This further eliminates the risk of the last drop of paint dripping and is a deep optimization of the anti-spillage design.

[0022] Optionally, the telescopic assembly includes a telescopic rod, a protrusion, a protruding plate, and an elastic element. The telescopic rod connects the drive assembly and the scraper. The elastic element is disposed inside the telescopic rod and drives the scraper to approach the storage tank. The protruding plate is disposed at the movable end of the telescopic rod, and the protrusion is disposed on the filling pipe. The protrusion abuts against the protruding plate and drives the telescopic rod to extend.

[0023] By adopting the above technical solution, during the rotation of the scraper, the protrusions on the filling pipe will contact the protruding plate at the movable end of the telescopic rod. As the rotation continues, the protrusions press against the protruding plate, overcoming the elastic force of the elastic element, causing the telescopic rod to extend. After passing the highest point of the protrusion, the telescopic rod automatically retracts under the action of the elastic element. The extension and retraction are triggered by the rotation of the scraper itself. The structure is simple and reliable, low in cost, and highly automated, ensuring the continuity of the entire "scraping-pushing-resetting" process and improving the intelligence and integration of the device.

[0024] Optionally, the end of the closing plate is elastic and is pressed into contact when the two scrapers initially come into contact, and elastically releases and vibrates during scraping.

[0025] By adopting the above technical solution, during the filling stage, the scraper mechanism maintains its initial contact state. At this time, the elastic sealing plates are tightly pressed together due to mutual compression, which acts like a flexible "sealing plug" and can effectively prevent the coating that may seep down from the upper pipe, ensuring no leakage during the filling interval.

[0026] When filling is complete and the drive assembly activates the scraper to remove the coating, the two scrapers initially move in opposite directions and separate. At this instant, the ends of the elastic sealing plate, which were previously pressed together, are rapidly released due to the elastic memory effect of their material. This release process is accompanied by a slight, rapid vibration. This vibration has two key functions: first, it shakes off any very small amount of high-viscosity paint that may adhere to the contact surface of the sealing plate; second, the vibration disrupts the adhesion between the paint and the plate surface, allowing the sealing plate to remain clean during opening and preventing residual paint from being carried to its upper surface.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. Reduces paint spillage on the inner wall after pipeline closure. By actively scraping, paint dripping is significantly reduced or even eliminated, thus avoiding pollution of the construction environment, damage to the cleanliness of transportation equipment, and paint waste. It improves the cleanliness and automation level of the filling process and reduces subsequent cleaning and maintenance costs. Furthermore, the scraped paint flows into the container, which reduces resource waste and further reduces costs. 2. The edges of the scraper that contact the inner wall of the pipe are designed as inclined blades. When the two scrapers move towards each other and finally come into contact, their blade-shaped ends not only scrape the inner wall, but also cooperate with each other, like scissors, to squeeze and shear the paint gathered in the middle. The blade-shaped structure reduces the contact area between the scraper and the inner wall of the pipe, increases the local pressure, and makes the scraping more thorough, especially for viscous or semi-dry paint. The combined squeezing of the two blade-shaped ends can "scoop" the highly adhesive paint away from the inner wall and forcefully push it into the formed guide channel, which greatly improves the adaptability to high viscosity paint and the scraping efficiency. 3. The extension and retraction are triggered by the rotation of the scraper itself. The structure is simple and reliable, the cost is low, and the degree of automation is high. This ensures the continuity of the entire process of "scraping-pushing-resetting" and improves the intelligence and integration of the device. Attached Figure Description

[0028] Figure 1 This is an overall structural diagram of the filling device in this embodiment; Figure 2 This is a diagram illustrating the driving component in an embodiment of this application; Figure 3 This is a diagram illustrating the telescopic component in an embodiment of this application; Figure 4This is a bottom view of the filling pipe in an embodiment of this application; Figure 5 This is a diagram showing the installation position of the positioning block in an embodiment of this application; Figure 6 This is a cross-sectional view of the telescopic rod in an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 100, storage tank; 200, filling pipe; 300, control valve; 400, scraper mechanism; 410, scraper; 411, blade-shaped chamfer; 420, drive assembly; 421, drive motor; 422, gear; 423, gear ring; 424, meshing gear ring; 425, rotating ring; 430, sealing plate; 440, positioning block; 450, telescopic assembly; 451, telescopic rod; 452, protrusion; 453, extension rod; 454, elastic element. Detailed Implementation

[0030] The following combination Figures 1 to 6 This application will be described in further detail.

[0031] Reference Figures 1 to 6 This embodiment provides a paint filling device, the core of which lies in adding a rotatable scraper mechanism 400 inside a traditional filling pipe 200. This mechanism mainly consists of a scraper 410, a drive assembly 420, and related connecting parts. The drive assembly 420 is fixedly installed outside the filling pipe 200, and its output power is transmitted to the inside of the pipe through a transmission mechanism, driving the scraper 410 to rotate. After the filling operation is completed, the control valve 300 closes, and the drive assembly 420 is immediately activated, driving the scraper 410 to rotate along the inner wall of the pipe, thoroughly scraping away any residual paint adhering to the inner wall, and guiding it into the container through the special structure formed by the scraper 410, thereby eliminating the problem of paint dripping and spilling.

[0032] The filling device includes a storage tank 100 and a filling pipe 200 connected to the storage tank 100. The filling pipe 200 is vertically arranged, and a control valve 300 for controlling the flow of paint is installed at its lower end. In order to achieve automatic cleaning of the inner wall of the pipe, a scraper mechanism 400 is provided on the filling pipe 200.

[0033] The scraper mechanism 400 includes two main scrapers 410, two rotating rings 425, and two extension rods 453. The two extension rods 453 are respectively connected to the inner side of the two scrapers 410 in the initial state. One extension rod 453 slides and abuts against the side wall of the filling pipe 200 away from the control valve 300, and the other extension rod 453 slides and abuts against the side wall of the extension rod 453 away from the filling pipe 200. The two rotating rings 425 are rotatably connected to the outer side wall of the filling pipe 200. The two scrapers 410 are connected to the rotating rings 425 through the telescopic assembly 450 to achieve rotatable connection with the filling pipe 200. The two scrapers 410 pass through the inner wall of the pipe and can rotate within a certain angle range. The two scrapers 410 abut against each other in the initial state to form a roughly closed conical structure located inside the pipe. The drive assembly 420 provides power for the rotation of the scraper 410. The drive assembly 420 includes a drive motor 421 fixed to the outside of the pipe, with a gear 422 keyed to its output shaft. To achieve synchronous counter-rotation of the two scrapers 410, the drive assembly 420 also includes a gear ring 423 and a meshing gear ring 424. The gear ring 423 is fixedly connected to the rotating ring 425 of one scraper 410, while the meshing gear ring 424 is fixedly connected to the rotating ring 425 of the other scraper 410. The drive gear 422 on the output shaft of the drive motor 421 meshes with the gear ring 423 and the meshing gear ring 424. The gear ring 423 and the meshing gear ring 424 are symmetrically installed and tangent to the gear 422. When the drive motor 421 starts, the rotation of the drive gear 422 can simultaneously drive the gear ring 423 and the meshing gear ring 424 to rotate in opposite directions, thereby driving the two scrapers 410 to move towards or away from each other.

[0034] To improve scraping efficiency and flow guidance, both scraper blades 410 are designed with an inclined structure. When they complete the scraping action and finally come into contact, their inclined surfaces can jointly form a downward converging guide channel, allowing the scraped paint to flow down along this channel. To further enhance scraping ability, especially for high-viscosity paints, the lower edge of the scraper blade 410 that contacts the inner wall of the filling pipe 200 is machined into an inclined blade-shaped chamfer 411. When the two scraper blades 410 move towards each other and come into contact, their blade-shaped ends can cooperate to exert a squeezing and shearing effect on the accumulated paint, thereby completely peeling it off the inner wall and pushing it into the guide channel.

[0035] To provide additional sealing during the filling process, a sealing plate 430 is provided on the upper surface of the two scrapers 410 near the storage tank 100. These two sealing plates 430 are also inclined. When the two scrapers 410 are in the initial contact state, the two sealing plates 430 also move closer to each other to form an upward ridge-like structure, which facilitates the guidance of the paint during filling, reduces flow resistance, and reduces the amount of paint flowing between the two scrapers 410, thus reducing the adhesion of paint on the scrapers 410.

[0036] In other embodiments, the ends of the sealing plate 430 are made of an elastic material; when the two scrapers 410 are in the initial abutment state, the ends of the two sealing plates 430 are squeezed against each other and deformed to form a seal; when the scraper mechanism 400 begins to scrape and separates from each other, the elastic ends of the sealing plate 430 vibrate during the pressure release process.

[0037] To further ensure that residual coating is completely removed from the pipe at the end of the scraping action, the scraper 410 and the drive assembly 420 are connected by a telescopic assembly 450. This telescopic assembly 450 mainly includes a telescopic rod 451 and a built-in elastic element 454. One end of the telescopic rod 451 is connected to a rotating ring 425, and the other end is fixedly connected to an extension rod 453 of the scraper 410. One telescopic rod 451 is positioned closer to the side wall of the filling pipe 200 than the other, allowing it to rotate inside the other telescopic rod 451. The telescopic rod 451 is connected to the extension rod 453 at the end of the filling pipe 200. A protruding plate is fixed at the movable end of the telescopic rod 451. The protruding plate is integrally formed on the extension rod 453. A protrusion 452 is fixedly installed at a corresponding position on the inner wall of the filling pipe 200. When the scraper 410 rotates to the position where they abut against each other, the protruding plate contacts the side wall of the protrusion 452. As the rotation continues, the protrusion 452 presses against the protruding plate, overcoming the force of the elastic element 454, causing the telescopic rod 451 to extend downward a short distance, thereby giving the scraper 410 a downward pushing action.

[0038] In other embodiments, the telescopic rod 451 can be reserved for a certain stroke. When the extension rod 453 abuts against the end of the filling pipe 200 away from the control valve 300, during paint filling, it can drive the scraper 410 to move down and stretch the elastic element 454. After filling is completed, the spring shakes, causing the scraper 410 to vibrate, and then the inner wall of the pipe is cleaned. The vibrating cleaning during the stroke increases the falling speed of the paint.

[0039] In addition, a positioning block 440 is provided at the lower end of the scraper 410 away from the storage tank 100. The positioning block 440 protrudes from the lower edge of the scraper 410 and extends outward to reduce the rigidity of the filling process. Its function is that when the operator pushes the container to be filled upward to the filling station, the container mouth will contact the positioning block 440, thereby ensuring that the container mouth and the outlet of the filling pipe 200 are always kept at a preset optimal distance.

[0040] When using this device, first place the container to be filled below the filling pipe 200 and push it upwards until its opening contacts the positioning block 440 at the lower end of the scraper 410; then, open the control valve 300, and the paint flows from the storage tank 100 into the container through the filling pipe 200. After filling is completed, close the control valve 300; at this time, the drive motor 421 starts, and through the meshing transmission of the gear 422 and the gear ring 423, drives the two scrapers 410 to open from the initial closed state by rotating in opposite directions, and then turn to rotate in opposite directions. During this process, the blade-shaped edge of the scraper 410 thoroughly scrapes away the residual paint on the inner wall of the pipe and guides it to the center. When the scraper 410 rotates to abut against each other to form a guide channel, the telescopic component 450 extends under the action of the protrusion 452, pushing the scraper 410 and the accumulated paint downward, giving the paint power to fall quickly into the container below. Subsequently, the drive motor 421 reverses, and the scraper 410 returns to the initial closed state with the assistance of the elastic element 454 of the telescopic component 450, for the next round of filling.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paint filling device, comprising a storage tank (100), a filling pipe (200) communicating with the storage tank (100), and a control valve (300) disposed on the filling pipe (200), wherein the filling pipe (200) is vertically arranged for filling paint into a container, characterized in that, The filling pipe (200) is provided with a rotatable scraper mechanism (400), the scraper mechanism (400) includes at least one scraper (410) and a drive assembly (420) provided on the filling pipe (200) and connected to the scraper (410); the scraper (410) rotates on the inner wall of the filling pipe (200) and can rotate with the drive assembly (420) after filling to scrape off the paint residue on the inner wall of the filling pipe (200).

2. The paint filling device according to claim 1, characterized in that, There are two scrapers (410), and the two scrapers (410) abut against each other and move in opposite directions or towards each other.

3. The paint filling device according to claim 2, characterized in that, Both scrapers (410) are inclined and abut against each other to form a guide channel after the scraping action is completed.

4. The paint filling device according to claim 3, characterized in that, The two scrapers (410) are provided with a sealing plate (430) on the side near the storage tank (100). The two sealing plates (430) are inclined and guide the coating towards the filling tank when the two scrapers (410) initially come into contact.

5. The paint filling device according to claim 1, characterized in that, A positioning block (440) is provided at one end of the scraper (410) away from the storage tank (100), and the positioning block (440) is used to position the container to be filled.

6. The paint filling apparatus according to any one of claims 2-4, characterized in that, The end of the scraper (410) that contacts the filling pipe (200) has an inclined blade-shaped chamfer (411). When the scraping action of the two scrapers (410) is completed, the blade-shaped chamfer (411) of the two scrapers (410) cooperate to squeeze the coating into the guide channel.

7. The paint filling device according to claim 6, characterized in that, The drive assembly (420) includes a drive motor (421), a gear (422), a gear ring (423), and a meshing gear ring (424). The gear ring (423) is connected to one of the scrapers (410), and the meshing gear ring (424) is connected to the other scraper (410). The drive motor (421) is mounted on the filling pipe (200), and the gear (422) is mounted on the output shaft of the drive motor (421). The gear ring (423) and the meshing gear ring (424) are both meshed with the gear (422) and move in opposite directions.

8. The paint filling apparatus according to any one of claims 2-5, characterized in that: The scraper (410) is connected to the drive assembly (420) via a telescopic assembly (450). When the two scrapers (410) come into contact, the telescopic assembly (450) extends, causing the scraper (410) to drive the paint to flow.

9. The paint filling device according to claim 8, characterized in that, The telescopic assembly (450) includes a telescopic rod (451), a protrusion (452), a convex plate, and an elastic element (454). The telescopic rod (451) connects the drive assembly (420) and the scraper (410). The elastic element (454) is disposed inside the telescopic rod (451) and drives the scraper (410) to approach the storage tank (100). The convex plate is disposed at the movable end of the telescopic rod (451), and the protrusion (452) is disposed on the filling pipe (200). The protrusion (452) abuts against the convex plate and drives the telescopic rod (451) to extend.

10. The paint filling device according to claim 1, characterized in that, The end of the closing plate (430) is elastic and is pressed into contact when the two scrapers (410) initially come into contact, and is elastically released and vibrates during scraping.

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