Anti-blocking device for powder coating hopper

Abstract

The utility model relates to an anti-blocking device for a powder coating hopper, which belongs to the technical field of hopper blocking prevention and comprises a conveying hopper, a transverse plate is fixed on the inner side of the conveying hopper, and a stirring mechanism is arranged on the transverse plate. The stirring mechanism comprises a stirring shaft which rotates in the transverse plate and a driving structure which is fixed on the transverse plate and is used for driving the stirring shaft; a scraping structure is arranged outside the stirring shaft and comprises a scraping plate and a liquid conveying pipe which rotates at the top end of the stirring shaft. According to the anti-blocking device for the powder coating hopper, the stirring rod is driven by the stirring shaft to continuously stir a powder coating, so that the coating is always in a flowing state, the coating is prevented from caking due to long-time standing, the blockage of the conveying hopper is effectively prevented, the stirring rod can be driven by the stirring shaft to stir the coating in the whole conveying hopper, and the stirring efficiency is improved. The stirring range is large, it can be ensured that paint at all parts in the conveying hopper can be fully stirred, and caking is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of hopper anti-clogging technology, specifically to a powder coating hopper anti-clogging device. Background Technology

[0002] When using a hopper to feed powder coatings, the hopper has a large top opening and a small bottom outlet. This causes the powder coating to be discharged at a lower rate than it is fed in when a large amount of powder coating is poured in. As a result, some powder coating accumulates inside the hopper and is squeezed against the inner wall. Under the pressure of this compression, the powder particles are bonded together, causing the powder coating to form lumps. These lumps can easily clog the outlet of the hopper.

[0003] A search revealed that patent document CN21739313U discloses a powder coating hopper anti-clogging device, specifically relating to the field of powder coating hopper anti-clogging technology. The device includes a conveying mechanism installed at the bottom of the powder coating hopper. The conveying mechanism comprises a connecting pipe fixedly connected to the bottom of the powder coating hopper, with a conveying pipe also fixedly connected to the bottom of the connecting pipe. A spiral conveying rod is movably connected inside the conveying pipe via a bearing. The powder coating hopper is equipped with a dispersing mechanism to break up lumpy powder coating, and cleaning mechanisms are located on both sides of the inside of the hopper to clean powder coating adhering to the inner wall. This invention, through the conveying and dispersing mechanisms, can prevent powder coating from accumulating inside the powder coating hopper, achieving an anti-clogging effect. Furthermore, the cleaning mechanisms can remove powder coating adhering to the inner wall of the powder coating hopper.

[0004] However, the aforementioned patent also has the following drawbacks: stubborn stains are difficult to remove. After the paint adheres to the inner wall of the hopper for a period of time, it becomes dry and hard, forming stubborn stains. It is difficult to completely remove these stubborn paints by mechanical scraping with a cleaning plate alone. Therefore, a powder coating hopper anti-clogging device is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a powder coating hopper anti-clogging device, which has the advantages of good cleaning effect and effective prevention of agglomeration. It solves the problem that existing hoppers, which rely solely on the mechanical scraping of the cleaning plate, are unlikely to completely remove stubborn coatings.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a powder coating hopper anti-clogging device, comprising a conveying hopper, wherein a horizontal plate is fixed on the inner side of the conveying hopper and a stirring mechanism is provided on the horizontal plate;

[0007] The stirring mechanism includes a stirring shaft that rotates inside the horizontal plate and a drive structure fixed on the horizontal plate for driving the stirring shaft.

[0008] The outside of the stirring shaft is provided with a scraping structure, which includes a scraper and a liquid delivery pipe rotating at the top of the stirring shaft. The scraper has a spray hole on the side near the delivery hopper, and a connecting piece is provided between the scraper and the stirring shaft.

[0009] The lower surface of the horizontal plate is provided with an adjustment structure for adjusting the scraper, the adjustment structure including a push arm, an electric telescopic rod and a connecting frame.

[0010] Furthermore, the top end of the stirring shaft penetrates the interior of the horizontal plate, and the stirring shaft bearing is mounted on the horizontal plate.

[0011] Furthermore, the drive structure includes a drive motor fixed to the upper surface of the horizontal plate and gear components disposed on the output shaft of the drive motor and the outer surface of the stirring shaft. The gear components consist of two meshing transmission gears.

[0012] Furthermore, the connecting component includes a connecting sleeve fixed to the outer surface of the stirring shaft and a connecting pipe fixed to the side of the scraper away from the conveying hopper. The other end of the connecting pipe extends into the interior of the connecting sleeve, and the connecting pipe is telescopically connected to the connecting sleeve.

[0013] Furthermore, the scraper, the connecting sleeve, and the connecting pipe are all hollow inside, and the left and right ends of the connecting sleeve and the connecting pipe are connected. The stirring shaft has an infusion tank and a docking hole that communicate with the connecting sleeve inside.

[0014] Furthermore, an installation sleeve is fixed to the outer surface of the connecting pipe, a sliding sleeve is sleeved on the outer surface of the stirring shaft, and the pushing arm is hinged between the installation sleeve and the sliding sleeve.

[0015] Furthermore, the electric telescopic rod is fixed to the lower surface of the cross plate by bolts, and a connecting frame that rotates on the outer surface of the sliding sleeve is fixed to the output end of the electric telescopic rod.

[0016] Furthermore, the number of spray holes is several, and the shape of the scraper is adapted to the inner wall of the hopper.

[0017] Compared with the prior art, the present invention provides a powder coating hopper anti-clogging device, which has the following beneficial effects:

[0018] 1. This powder coating hopper anti-clogging device uses a stirring shaft to drive a stirring rod to continuously stir the powder coating, keeping the coating in a flowing state and preventing it from clumping due to prolonged stillness. This effectively prevents clogging of the hopper. The stirring rod can stir the coating throughout the hopper under the drive of the stirring shaft, with a large stirring range, ensuring that the coating in all parts of the hopper is fully stirred, effectively preventing clumping.

[0019] 2. This powder coating hopper anti-clogging device can flexibly adjust the scraper position according to the actual situation of the coating in the hopper, such as the viscosity and adhesion of the coating, through the adjustment structure. When the coating viscosity is high or the adhesion is strong, the scraper can be moved closer to the inner wall of the hopper to enhance the cleaning force. The electric telescopic rod can adjust the scraper position through a simple telescopic action, which is simple and convenient to operate and easy to control. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional view of the structure of this utility model;

[0022] Figure 3 This is a three-dimensional structural view of the scraper of this utility model;

[0023] Figure 4 This is a three-dimensional view of the connecting pipe of this utility model.

[0024] In the diagram: 1. Feed hopper; 2. Horizontal plate; 3. Stirring shaft; 4. Drive motor; 5. Gear; 6. Sliding sleeve; 7. Connecting component; 701. Connecting sleeve; 702. Connecting pipe; 703. Mounting sleeve; 8. Push arm; 9. Scraper; 10. Electric telescopic rod; 11. Connecting frame; 12. Infusion pipe; 14. Spray nozzle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 4This embodiment of a powder coating hopper anti-clogging device includes a conveying hopper 1, with a horizontal plate 2 fixed to the inner side of the conveying hopper 1. A stirring mechanism is mounted on the horizontal plate 2. Specifically, the stirring mechanism includes a stirring shaft 3 rotating inside the horizontal plate 2 and a drive structure fixed to the horizontal plate 2 for driving the stirring shaft 3. The drive structure includes a drive motor 4 fixed to the upper surface of the horizontal plate 2 and gear components 5 disposed on the output shaft of the drive motor 4 and the outer surface of the stirring shaft 3. The gear component 5 consists of two meshing transmission gears. The top end of the stirring shaft 3 penetrates the interior of the horizontal plate 2, and the stirring shaft 3 bearing is mounted on the horizontal plate 2. The gear transmission ratio is accurate, ensuring that the rotational speed and torque of the stirring shaft 3 match the output of the drive motor 4. By rationally designing the gear ratio of the two transmission gears, the rotational speed of the stirring shaft 3 can be precisely controlled, enabling the stirring mechanism to stir at an appropriate speed according to different powder coating characteristics and process requirements.

[0027] To improve the cleaning efficiency of the conveying hopper 1, a scraping structure is provided on the outside of the stirring shaft 3. This scraping structure includes a scraper 9 and a liquid delivery pipe 12 rotating at the top of the stirring shaft 3. The scraper 9 has spray holes 14 on the side closest to the conveying hopper 1, and a connecting member 7 is provided between the scraper 9 and the stirring shaft 3. It should be noted that there are several spray holes 14, and the shape of the scraper 9 is adapted to the inner wall of the conveying hopper 1. The scraper 9's shape adapts to the inner wall of the conveying hopper 1, allowing it to fit tightly against the inner wall. When the stirring shaft 3 drives the scraper 9 to rotate, it can completely scrape off the powder coating adhering to the inner wall of the conveying hopper 1, effectively preventing the coating from accumulating and clumping on the inner wall, ensuring the unobstructed flow of the conveying hopper 1. Specifically, the connecting member 7 includes a connecting sleeve 701 fixed to the outer surface of the stirring shaft 3 and a connecting pipe 702 fixed to the side of the scraper 9 away from the conveying hopper 1. The other end of the connecting pipe 702 extends into the connecting sleeve 701, and the connecting pipe 702 and the connecting sleeve 701 are telescopically connected. The scraper 9, connecting sleeve 701, and connecting pipe 702 are all hollow, with the left and right ends of the connecting sleeve 701 and connecting pipe 702 connected. The stirring shaft 3 has a liquid delivery tank and a docking hole inside that communicate with the connecting sleeve 701. Several spray holes 14 are provided on the side of the scraper 9 closest to the hopper 1. The scraper 9, connecting sleeve 701, and connecting pipe 702 are all hollow, with the left and right ends of the connecting sleeve 701 and connecting pipe 702 connected. The liquid delivery tank and docking hole inside the stirring shaft 3 communicate with the connecting sleeve 701. This allows cleaning fluid to be delivered to the scraper 9 via the liquid delivery pipe 12. The cleaning fluid is sprayed from the spray holes 14, wetting and softening the adhering coating on the inner wall of the hopper 1, further improving the cleaning effect.

[0028] To further improve the scraping effect of scraper 9, an adjustment structure for adjusting scraper 9 is provided on the lower surface of horizontal plate 2. The adjustment structure includes push arm 8, electric telescopic rod 10, and connecting frame 11. An mounting sleeve 703 is fixed to the outer surface of connecting pipe 702, and a sliding sleeve 6 is sleeved on the outer surface of stirring shaft 3. Push arm 8 is hinged between mounting sleeve 703 and sliding sleeve 6. Specifically, electric telescopic rod 10 is fixed to the lower surface of horizontal plate 2 by bolts, and a connecting frame 11 rotating on the outer surface of sliding sleeve 6 is fixed to the output end of electric telescopic rod 10. When the position of scraper 9 needs to be adjusted, electric telescopic rod 10 extends and retracts, driving connecting frame 11 to move. Connecting frame 11, through push arm 8, causes sliding sleeve 6 to slide on stirring shaft 3, thereby driving scraper 9 (connecting pipe 702 is fixed to scraper 9, and connecting pipe 702 is hinged to push arm 8 through mounting sleeve 703) to adjust its position on stirring shaft 3. This electric control method is convenient and precise to operate. It allows for flexible adjustment of the distance between the scraper 9 and the inner wall of the hopper 1 based on the actual conditions of the coating inside, such as viscosity and adhesion, thereby improving cleaning efficiency. A shield can also be installed on the outside of the electric telescopic rod 10 to prevent material from affecting it. The hopper 1 is equipped with control devices. Pressure sensors can also be installed on the scraper 9.

[0029] The working principle of the above embodiments is as follows:

[0030] When the drive motor 4 starts, its output shaft rotates, which drives the active transmission gear in the gear component 5 to rotate. The active transmission gear meshes with the driven transmission gear on the outer surface of the stirring shaft 3, thereby driving the stirring shaft 3 to rotate. The stirring shaft 3 stirs the powder coating in the conveying hopper 1, keeping the coating in a fluid state and preventing it from clumping.

[0031] The cleaning fluid enters the connecting sleeve 701 through the infusion tank and docking hole inside the stirring shaft 3. Since the other end of the connecting pipe 702 extends into the connecting sleeve 701 and the connecting pipe 702 is telescopically connected to the connecting sleeve 701, and the scraper 9, the connecting sleeve 701 and the connecting pipe 702 are all hollow and have open ends, the cleaning fluid will flow into the connecting pipe 702 along the connecting sleeve 701 and finally spray out from the spray hole 14 opened on the side of the scraper 9 near the conveying hopper 1 to wet and soften the coating adhering to the inner wall of the conveying hopper 1.

[0032] When the stirring shaft 3 rotates, the scraper 9 rotates together with the stirring shaft 3. Because the shape of the scraper 9 is adapted to the inner wall of the conveying hopper 1, it can scrape off the paint adhering to the inner wall of the conveying hopper 1, thus achieving the cleaning function.

[0033] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connections.

[0034] Any connection method that can achieve its beneficial effect can be implemented. In addition, all electrical components in this embodiment are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing public power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder coating hopper anti-blocking device comprising a feed hopper (1), characterised in that: A horizontal plate (2) is fixed on the inner side of the feeding hopper (1), and a stirring mechanism is provided on the horizontal plate (2); The stirring mechanism includes a stirring shaft (3) that rotates inside the horizontal plate (2) and a driving structure fixed on the horizontal plate (2) for driving the stirring shaft (3); The outside of the stirring shaft (3) is provided with a scraping structure, which includes a scraper (9) and a liquid delivery pipe (12) rotating at the top of the stirring shaft (3). The scraper (9) has a spray hole (14) on the side near the feed hopper (1), and a connecting piece (7) is provided between the scraper (9) and the stirring shaft (3). The lower surface of the horizontal plate (2) is provided with an adjustment structure for adjusting the scraper (9), the adjustment structure including a push arm (8), an electric telescopic rod (10) and a connecting frame (11).

2. A powder coating hopper anti-blocking device according to claim 1, wherein: The top end of the stirring shaft (3) penetrates the interior of the horizontal plate (2), and the bearing of the stirring shaft (3) is mounted on the horizontal plate (2).

3. A powder coating hopper anti-blocking device according to claim 1, wherein: The drive structure includes a drive motor (4) fixed on the upper surface of the horizontal plate (2) and a gear component (5) disposed on the output shaft of the drive motor (4) and the outer surface of the stirring shaft (3). The gear component (5) consists of two meshing transmission gears.

4. The powder coating hopper anti-blocking device of claim 1, wherein: The connecting component (7) includes a connecting sleeve (701) fixed to the outer surface of the stirring shaft (3) and a connecting pipe (702) fixed to the side of the scraper (9) away from the conveying hopper (1). The other end of the connecting pipe (702) extends into the interior of the connecting sleeve (701), and the connecting pipe (702) is telescopically connected to the connecting sleeve (701).

5. A powder coating hopper anti-blocking device according to claim 4, wherein: The scraper (9), the connecting sleeve (701) and the connecting pipe (702) are all hollow inside, and the connecting sleeve (701) and the connecting pipe (702) are connected at both ends. The stirring shaft (3) has an infusion tank and a docking hole that are connected to the connecting sleeve (701) inside.

6. A powder coating hopper anti-blocking device according to claim 5, wherein: The outer surface of the connecting pipe (702) is fixed with an installation sleeve (703), the outer surface of the stirring shaft (3) is sleeved with a sliding sleeve (6), and the push arm (8) is hinged between the installation sleeve (703) and the sliding sleeve (6).

7. A powder coating hopper anti-blocking device according to claim 6, wherein: The electric telescopic rod (10) is fixed to the lower surface of the horizontal plate (2) by bolts, and a connecting frame (11) that rotates on the outer surface of the sliding sleeve (6) is fixed on the output end of the electric telescopic rod (10).

8. A powder coating hopper anti-blocking device according to claim 1, wherein: The number of spray holes (14) is several, and the shape of the scraper (9) is adapted to the inner wall of the hopper (1).

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