A powder supply center with automatic cleaning function of powder tube

Abstract

The utility model discloses a powder supply center with powder pipe automatic cleaning function belongs to powder supply center technical field, this powder supply center with powder pipe automatic cleaning function, including the powder spraying box for powder spraying processing and install in the powder storage bin of powder spraying box, and the detachable hatch cover is installed with the clamping on the powder storage bin, and the hatch cover is fixed and installed with multiple rows of powder spraying mechanism at equal interval on, and the powder spraying mechanism includes the multiple rows of three -way valves fixed on the hatch cover at equal interval, and the upper powder pipe is connected with through below three -way valves, and the upper powder pipe goes into the powder storage bin, and the spray pipe is connected with through above three -way valves, and the air inlet pipe for automatic cleaning upper powder pipe is connected with through to three -way valve lateral, through the air inlet pipe to the high pressure gas of input upper powder pipe, and high pressure gas can drive the vibration frame vibration effect to the outer wall of upper powder pipe, and can accelerate the cleaning of the powder that sticks to the inner wall of upper powder pipe in combination with the gas and external vibration force, improve powder spraying processing effect.

Description

Technical Field

[0001] This utility model relates to the technical field of powder supply centers, specifically a powder supply center with an automatic powder tube cleaning function. Background Technology

[0002] Electrostatic powder coating utilizes electrostatic adsorption to uniformly adhere charged powder coating to the surface of a workpiece, which is then cured at high temperature to form a robust coating. The quality and uniformity of the powder supply have a significant impact on the powder coating process.

[0003] For example, patent CN215878394U discloses a powder coating device with powder recovery, including a coating box with a door. A screw is rotatably connected to the top of the coating box. A handwheel is fixed to the end of the screw outside the coating box, and the end of the screw inside the coating box is helically connected to a threaded sleeve. An upper clamping plate is fixed to the bottom of the threaded sleeve. A lower clamping plate is fixed to the bottom of the inner side of the coating box via two lower bearing seats. A frustum-shaped fixing head is rotatably connected to the opposite surfaces of the upper and lower clamping plates via a rotating shaft. The device achieves a comprehensive coating process, greatly improving coating quality and efficiency, and recovering the powder inside the coating box. Air is continuously drawn into the recovery tank to collect the powder. A filter traps the powder within the tank while the air is expelled, enabling powder recycling and reuse. This protects the working environment and conserves resources. During spraying, it was found that after prolonged pumping, powder tends to adhere to the inner wall of the powder supply pipe at the rear of the pump. If left for too long, the adhered powder can clump together, forming lumps that affect the spraying effect and may even cause blockages. Furthermore, when changing to powders of different particle sizes, the powder adhering to the inner wall of the supply pipe affects the spraying effect of the new powder, thus reducing the pass rate.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing powder supply center. Utility Model Content

[0005] The purpose of this invention is to provide a powder supply center with an automatic powder tube cleaning function, in order to solve the problem mentioned in the background art that after the powder pump has been pumping for a long time, powder tends to adhere to the inner wall of the powder supply tube at the rear of the powder pump. If the time is too long, the adhered powder will stick together, and in severe cases, it will form a blocky structure, thereby affecting the spraying effect or even causing powder supply blockage. In addition, when changing to powder of different particle sizes, the powder adhering to the inner wall of the powder supply tube will affect the spraying effect of the changed powder, thereby reducing the pass rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a powder supply center with an automatic powder pipe cleaning function, comprising a powder spraying box for powder spraying and a powder storage bin installed in the powder spraying box. A detachable cover is snapped onto the powder storage bin, and multiple rows of powder spraying mechanisms are fixedly installed on the cover at equal intervals. The powder spraying mechanism includes multiple rows of three-way valves fixed at equal intervals on the cover. A powder feeding pipe is connected through the bottom of the three-way valves and extends into the powder storage bin. A spray pipe is connected through the top of the three-way valves, and an air inlet pipe for automatically cleaning the powder feeding pipe is connected through the side of the three-way valves.

[0007] Preferably, a powder pump is fixedly installed in the powder spraying box, and the powder pump is connected in a through connection with the spray pipe.

[0008] Preferably, the nozzle is inclined above the air inlet pipe, and the air inlet pipe is vertically positioned above the powder loading pipe.

[0009] Preferably, the powder feeding pipe is provided with a vibration mechanism on the outside to assist in cleaning the powder on its inner wall.

[0010] Preferably, the vibration mechanism includes two sets of guide seats symmetrically fixed to the outside of the powder-loading tube along the axial direction, with a vibration frame slidably connected through the guide seats, and the vibration frame movably sleeved on the outside of the powder-loading tube; two sets of vibration rods are symmetrically fixed to the inner wall of the vibration frame along the axial direction, and the vibration rods are arranged parallel to the outside of the powder-loading tube.

[0011] Preferably, the vibration mechanism further includes a steering shaft rotatably connected to the outside of the three-way valve extension pipe, and a power slide rod is fixed off-center at the bottom of the steering shaft; a slide frame is slidably sleeved on the outside of the power slide rod, and the slide frame is fixedly connected to the outside of the vibration frame.

[0012] Preferably, an impeller is rotatably connected inside the extension pipe on the side of the three-way valve near the intake pipe, and the bottom of the impeller is coaxially connected to the steering shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the powder supply center with automatic powder tube cleaning function automatically cleans the powder on the inner wall of the powder tube by high pressure gas during use, and after use, the powder tube can be completely disassembled by removing the cover for manual deep cleaning.

[0014] Furthermore, during use, the connection and closure of the pipeline are controlled by a three-way valve. When it is necessary to clean the powder supply pipe, the air inlet pipe and the powder supply pipe are connected by the three-way valve. The air inlet pipe outputs high-pressure gas into the powder supply pipe. Under the impact of the high-pressure gas flow, the powder in the powder supply pipe is automatically cleaned off, thus cleaning the powder adhering to the inner wall of the powder supply pipe. This operation allows staff to remotely control the automatic powder cleaning and powder replacement operations of the powder supply center.

[0015] Furthermore, the powder feeding tube is equipped with a vibration mechanism to assist in cleaning the powder on its inner wall. When high-pressure gas is introduced into the powder feeding tube through the air inlet pipe, the gas input quickly drives the impeller to rotate. The impeller drives the steering shaft to rotate. Under the transmission of the power slide rod and slide frame, the vibration frame and vibration rod can be controlled to move laterally back and forth. The reciprocating movement of the vibration frame and vibration rod acts on the outer wall of the powder feeding tube, causing the tube wall to vibrate. Combined with the impact of the high-pressure gas, the powder adhering to its inner wall can be quickly cleaned off, improving the automatic cleaning effect of the powder supply center. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the powder spraying box structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the powder storage bin structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the powder coating tube structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the three-way valve structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the air intake pipe structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the impeller structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the vibration frame structure of this utility model.

[0023] Figure 8 This is a schematic diagram of the power slide structure of this utility model.

[0024] In the diagram: 1. Powder spraying box; 2. Powder storage bin; 3. Cover; 4. Three-way valve; 5. Powder loading pipe; 51. Guide seat; 52. Vibrating frame; 53. Vibrating rod; 54. Steering shaft; 55. Power slide bar; 56. Slide frame; 57. Impeller; 6. Nozzle; 7. Air inlet pipe; 8. Powder pump. 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] Example 1: Please refer to Figures 1-4The present invention provides the following technical solution: a powder supply center with automatic powder pipe cleaning function, including a powder spraying box 1 for powder spraying and a powder storage bin 2 installed in the powder spraying box 1. A detachable cover 3 is snapped onto the powder storage bin 2. Multiple rows of powder spraying mechanisms are fixedly installed on the cover 3 at equal intervals. The powder spraying mechanism includes multiple rows of three-way valves 4 fixed at equal intervals on the cover 3. A powder feeding pipe 5 is connected through the bottom of the three-way valve 4. The powder feeding pipe 5 extends into the powder storage bin 2. A spray pipe 6 is connected through the top of the three-way valve 4. An air inlet pipe 7 for automatically cleaning the powder feeding pipe 5 is connected through the side of the three-way valve 4.

[0027] A powder pump 8 is fixedly installed in the powder spraying box 1, and the powder pump 8 is connected to the spray pipe 6. The spray pipe 6 is inclined above the air inlet pipe 7, and the air inlet pipe 7 is vertically positioned above the upper powder pipe 5.

[0028] During powder spraying, the powder loading pipe 5 is connected to the spray nozzle 6 via the three-way valve 4. At this time, the air inlet pipe 7 is closed. The powder pump 8 is running, and the powder in the powder storage bin 2 is drawn up through the powder loading pipe 5. The powder is then sprayed out through the spray nozzle 6 to achieve powder spraying.

[0029] Prolonged operation of the powder pump 8 can cause powder to adhere to the inner wall of the powder supply pipe 5. Manual cleaning of the powder supply pipe 5 can be performed by disassembling the cover 3. To improve cleaning efficiency and achieve automated cleaning, operators can remotely complete automatic powder cleaning and replacement processes by adjusting the connection status of the air inlet pipe 7 on the control panel of the powder supply center. The automatic powder cleaning process is as follows: Before powder replacement or during cleaning, the powder supply pipe 5 is connected to the air inlet pipe 7 via the three-way valve 4. High-pressure gas is then introduced into the powder supply pipe 5 through the air inlet pipe 7. The gas quickly enters the powder supply pipe 5, and under the impact of the high-pressure gas, the powder adhering to its inner wall is automatically cleaned, keeping the inner wall of the powder supply pipe 5 clean during powder replacement. Simultaneously, the inner wall of the powder supply pipe 5 also needs to be cleaned during shutdown to prevent powder clumping and improve the powder coating effect.

[0030] Example 2: Please refer to Figures 5-8 Based on Embodiment 1, a vibration mechanism to assist in the automatic cleaning of the powder-coating pipe 5 is also disclosed. Its specific structure is as follows: A vibration mechanism is provided outside the powder-coating pipe 5 to assist in cleaning the powder on its inner wall. The vibration mechanism includes two sets of guide seats 51 symmetrically fixed to the outside of the powder-coating pipe 5 along the axial direction. A vibration frame 52 is slidably connected through the guide seats 51, and the vibration frame 52 is movably sleeved on the outside of the powder-coating pipe 5. Two sets of vibrating rods 53 are symmetrically fixed to the inner wall of the vibration frame 52 along the axial direction, and the vibrating rods 53 are arranged parallel to each other outside the powder-coating pipe 5.

[0031] The vibration mechanism also includes a steering shaft 54 ​​rotatably connected to the outside of the extension tube of the three-way valve 4, and a power slide rod 55 is fixed off-center at the bottom of the steering shaft 54; a slide frame 56 is slidably sleeved on the outside of the power slide rod 55, and the slide frame 56 is fixedly connected to the outside of the vibration frame 52.

[0032] An impeller 57 is rotatably connected inside the extension pipe of the three-way valve 4 near the intake pipe 7. The bottom of the impeller 57 is coaxially connected to the steering shaft 54.

[0033] When the powder supply center is manually and remotely controlled to automatically clean or change powder, high-pressure gas is introduced into the powder supply pipe 5 through the air inlet pipe 7. The gas quickly enters the extension pipe on the side of the three-way valve 4, and contacts the blades of the impeller 57, pushing the blades to rotate. This controls the continuous rotation of the impeller 57. When the impeller 57 rotates, it drives the coaxially connected steering shaft 54 ​​to rotate synchronously. The steering shaft 54 ​​drives the power slide rod 55 connected at the end to rotate circumferentially. The power slide rod 55 slides in the slide frame 56, pushing the slide frame 56 to move laterally. The slide frame 56 can control the lateral outward movement of the vibration frame 52 and the vibrating rod 53. The vibrating rod 53 moves and contacts the surface of the powder supply pipe 5, which can vibrate and knock the powder supply pipe 5, causing the pipe wall of the powder supply pipe 5 to generate vibration force, which helps to vibrate and clean the powder attached to its inner wall. Combined with the high-pressure gas input through the air inlet pipe 7, the cleaning effect of the powder on the pipe wall of the powder supply pipe 5 is improved, maintaining the automatic cleaning effect of the powder supply center on the pipe wall.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A powder supply center with automatic powder tube cleaning function, comprising a powder spraying box (1) for powder spraying processing and a powder storage bin (2) installed in the powder spraying box (1), characterized in that: The powder storage bin (2) is fitted with a detachable cover (3), and a multi-row powder spraying mechanism is fixedly installed on the cover (3) at equal intervals. The powder spraying mechanism includes multiple rows of three-way valves (4) fixed at equal intervals on the cover (3). A powder loading pipe (5) is connected through the bottom of the three-way valve (4). The powder loading pipe (5) extends into the powder storage bin (2). A spray pipe (6) is connected through the top of the three-way valve (4). An air inlet pipe (7) for automatically cleaning the powder loading pipe (5) is connected through the side of the three-way valve (4).

2. A powder supply center with automatic powder tube cleaning function according to claim 1, characterized in that: A powder pump (8) is fixedly installed in the powder spraying box (1), and the powder pump (8) is connected to the spray pipe (6).

3. A powder supply center with automatic powder tube cleaning function according to claim 1, characterized in that: The nozzle (6) is inclined above the air inlet pipe (7), and the air inlet pipe (7) is vertically positioned above the powder loading pipe (5).

4. A powder supply center with automatic powder tube cleaning function according to claim 1, characterized in that: The powder feeding pipe (5) is provided with a vibration mechanism on the outside to assist in cleaning the powder on its inner wall.

5. A powder supply center with automatic powder tube cleaning function according to claim 4, characterized in that: The vibration mechanism includes two sets of guide seats (51) symmetrically fixed to the outside of the powder-loading pipe (5) along the axial direction. A vibration frame (52) is slidably connected through the guide seat (51) and is movably sleeved on the outside of the powder-loading pipe (5). Two sets of vibrating rods (53) are symmetrically fixed on the inner wall of the vibration frame (52) along the axial direction. The vibrating rods (53) are arranged parallel to the outside of the powder loading pipe (5).

6. A powder supply center with automatic powder tube cleaning function according to claim 5, characterized in that: The vibration mechanism also includes a steering shaft (54) rotatably connected to the outside of the extension tube of the three-way valve (4), and a power slide rod (55) is fixed off-center at the bottom of the steering shaft (54). The power slide rod (55) has a sliding frame (56) on its outer sliding sleeve, and the sliding frame (56) is fixedly connected to the outside of the vibration frame (52).

7. A powder supply center with automatic powder tube cleaning function according to claim 6, characterized in that: An impeller (57) is rotatably connected inside the extension pipe on the side of the three-way valve (4) near the air inlet pipe (7), and the bottom of the impeller (57) is coaxially connected to the steering shaft (54).

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