Novel electrostatic powder coating machine

Abstract

The utility model discloses a novel electrostatic powder coating machine which comprises a machine frame, a powder storage chamber, a powder spraying chamber, a stirring component, a powder spraying mechanism, a negative pressure device and a control system. The powder storage chamber is arranged under the powder spraying chamber, and the stirring component drives a stirrer through a stirring motor, so that talcum powder is evenly dispersed in the powder storage chamber. The powder spraying mechanism conveys powder to a nozzle through a medium-pressure fan, and the nozzle achieves uniform spraying of talcum powder through an electrostatic discharge needle. And the negative pressure device recycles unattached powder through the negative pressure chamber and the filter element chamber, so that the powder is prevented from overflowing. The control system comprises an electric box, an operation box, a frequency converter, an electrostatic controller and a relay, and provides intelligent operation and real-time monitoring. The talcum powder spraying device has the advantages of being adjustable in powder concentration, even in spraying, environment-friendly, efficient and easy and convenient to operate, and is suitable for spraying talcum powder in the wire and cable manufacturing process.

Description

Technical Field

[0001] The utility model relates to a powder spraying device, in particular to an electrostatic powder passing machine for coating talcum powder on wire and cable. Background Art

[0002] During the production process of wire and cable, production processes such as copper wire, core wire, cabling, and sheathing require a powder passing machine to adhere a layer of talcum powder on their surfaces to avoid adhesion between semi-finished wires and stranded wires when they are wound onto a wire reel, and to facilitate the separation of the wire core and the sheathing during the use of the sheathed finished product, and to control the peel strength of the finished product. Traditional talcum powder spraying devices have low efficiency, low powder utilization rate, and the powder is prone to spillage, polluting the environment. At the same time, there are also problems such as uneven spraying and poor powder adhesion. Therefore, it is necessary to provide a new type of electrostatic powder passing machine to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a new type of electrostatic powder passing machine to improve the powder spraying utilization rate, reduce powder spillage, and ensure uniform powder spraying and strong adhesion.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The new type of electrostatic powder passing machine includes a frame, a powder storage chamber, a powder spraying chamber, a stirring component, a powder spraying mechanism, and a negative pressure device. The frame bears the powder storage chamber and the powder spraying chamber, and the powder storage chamber is arranged directly below the powder spraying chamber;

[0006] The stirring component includes a stirrer, a stirring shaft synchronous pulley, and a stirring motor. The stirrer crosses the powder storage chamber, and the other end of the stirrer is connected to the stirring shaft synchronous pulley behind the powder storage chamber. The stirring shaft synchronous pulley is connected with a belt, and the other end of the belt is driven by the stirring motor;

[0007] Each side of the powder spraying chamber is provided with a wire passing hole, and an upper cover is arranged above the powder spraying chamber. The powder spraying mechanism includes a powder pipe, a nozzle, a nozzle bracket, and a medium-pressure fan. The powder pipe is connected to the nozzle. One end of the nozzle bracket is connected to the powder spraying chamber, and the nozzle bracket is used to fix the nozzle. The medium-pressure fan is arranged outside the side of the powder storage chamber. The air inlet of the medium-pressure fan is connected to the side opening of the powder storage chamber, and the air outlet of the medium-pressure fan is connected to the powder pipe;

[0008] An electrostatic discharge needle is arranged at the center of the nozzle, and the electrostatic discharge needle is connected to a high-voltage module, and the high-voltage module is connected to a high-voltage control board;

[0009] The negative pressure device includes a negative pressure chamber and a filter element chamber. The negative pressure chamber is arranged on both sides inside the powder spraying chamber. The negative pressure chamber is connected to the filter element chamber. An environmental protection filter element is arranged in the filter element chamber. The upper part of the filter element chamber is connected to the medium-pressure fan, and the lower part of the filter element chamber is connected to the powder storage chamber.

[0010] As an improvement of the present utility model, the electrostatic powder spraying machine further includes a control system, which includes an electrical box, an operation box, a frequency converter, an electrostatic controller, an electrostatic power supply, and a relay. The electrical box houses all electrical control components, and an electrical box door lock and a load switch are provided on the electrical box. A touch screen and control buttons are provided on the operation box. The frequency converter is connected to the stirring motor and the medium-pressure blower. The electrostatic controller is connected to the electrostatic discharge needle and the electrostatic power supply. The relay controls the circuit switch.

[0011] As an improvement of the present utility model, the outside of the powder storage chamber is wrapped with a silica gel heating sheet, and a powder liquid level sensor is provided at the bottom of the powder storage chamber. The powder liquid level sensor is connected to the control system.

[0012] As an improvement of the present utility model, a three-color warning light is further provided above the frame, and the three-color warning light is connected to the control system.

[0013] As an improvement of the present utility model, an air vibrator is further connected between the nozzle bracket and the powder spraying chamber.

[0014] As an improvement of the present utility model, a feeding port is provided on one side of the powder storage chamber, a powder hopper is provided below the feeding port, and the powder hopper is provided with a powder hopper cover.

[0015] As an improvement of the present utility model, height adjustment mechanisms are provided on both sides of the frame. The height adjustment mechanisms include casters and lifting feet, and the lifting feet are arranged on the casters.

[0016] The beneficial effects of the present utility model are as follows:

[0017] This application uses a frequency converter to adjust the speeds of the stirring motor and the medium-pressure blower, realizing stepless adjustment of the powder concentration and ensuring uniform powder coating. The electrostatic and powder mixing flow system combines an electrostatic discharge needle with a high-voltage module to improve the adhesion of the powder, resulting in a better spraying effect.

[0018] The negative pressure device of this application includes a negative pressure chamber and a filter element chamber, effectively preventing powder spillage, ensuring a clean operation environment, and having a significant environmental protection effect. An internal large powder storage chamber is wrapped with a silica gel heating sheet, which can heat and dry talcum powder to prevent powder caking and improve powder utilization rate.

[0019] The control system of this application includes a touch screen, a frequency converter, an electrostatic controller, etc., providing intelligent operation and real-time monitoring, with simple operation and stable equipment operation. The powder liquid level sensor monitors the powder volume in the powder storage chamber in real time, ensuring continuous production process and reducing downtime. At the same time, the equipment is equipped with safety devices such as an electrical box door lock, a load switch, a three-color warning light, and a relay to ensure the safety of operators and the reliable operation of the equipment.

[0020] The rack of the present application is equipped with height-adjustable casters and lifting feet, which facilitates the movement and height adjustment of the equipment on different production lines and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a rear view of the utility model.

[0023] Figure 3 It is the front view of the utility model.

[0024] List of Figure Symbols:

[0025] 1. Frame; 2. Powder storage chamber; 3. Powder spraying chamber; 31. Wire hole; 32. Upper cover; 41. Agitator; 42. Agitator shaft synchronous wheel; 43. Agitator motor; 51. Powder hose; 52. Nozzle; 53. Nozzle bracket; 54. Medium pressure fan; 61. Negative pressure chamber; 62. Filter chamber; 71. Electric box; 711. Electric box door lock; 712. Load switch; 72. Operation box; 721. Touch screen; 722. Control button; 73. Frequency converter; 74. Electrostatic controller; 75. Electrostatic power supply; 76. Relay; 8. Three-color warning light; 9. Powder hopper; 10. Powder hopper cover; 11. Casters; 12. Lifting feet. DETAILED DESCRIPTION

[0026] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] As shown in the figure, the novel electrostatic powder spraying machine provided by the present application includes a frame 1, a powder storage chamber 2, a powder spraying chamber 3, a stirring component, a powder spraying mechanism, and a negative pressure device. The frame 1 bears the powder storage chamber 2 and the powder spraying chamber 3, and the powder storage chamber 2 is arranged directly below the powder spraying chamber 3; the stirring component includes a stirrer 41, a stirring shaft synchronous pulley 42, and a stirring motor 43. The stirrer 41 passes through the powder storage chamber 2 horizontally, and the other end of the stirrer 41 is connected to the stirring shaft synchronous pulley 42 behind the powder storage chamber 2. The stirring shaft synchronous pulley 42 is connected with a belt, and the other end of the belt is driven by the stirring motor 43; there is a wire passing hole 31 on each side of the powder spraying chamber 3, and an upper cover 32 is arranged above the powder spraying chamber 3. The powder spraying mechanism includes a powder pipe 51, a nozzle 52, a nozzle support 53, and a medium-pressure blower 54. The powder pipe 51 is connected to the nozzle 52. One end of the nozzle support 53 is connected to the powder spraying chamber 3, and the nozzle support 53 is used to fix the nozzle 52. The medium-pressure blower 54 is arranged outside the side of the powder storage chamber 2. The air inlet of the medium-pressure blower 54 is connected to the side opening of the powder storage chamber 2, and the air outlet of the medium-pressure blower 54 is connected to the powder pipe 51; a static discharge needle is arranged at the center of the nozzle 52, and the static discharge needle is connected to a high-voltage module, and the high-voltage module is connected to a high-voltage control board; the negative pressure device includes a negative pressure chamber 61 and a filter element chamber 62. The negative pressure chamber 61 is arranged on both sides inside the powder spraying chamber 3. The negative pressure chamber 61 is connected to the filter element chamber 62. An environmental protection filter element is arranged in the filter element chamber 62. The upper part of the filter element chamber 62 is connected to the medium-pressure blower 54, and the lower part of the filter element chamber 62 is connected to the powder storage chamber 2.

[0029] The electrostatic powder spraying machine of the present utility model further includes a control system, and the control system includes an electric box 71, an operation box 72, a frequency converter 73, a static controller 74, a static power supply 75, and a relay 76. The electric box 71 houses all electrical control components. An electric box door lock 711 and a load switch 712 are arranged on the electric box 71. A touch screen 721 and a control button 722 are arranged on the operation box 72. The frequency converter 73 is connected to the stirring motor 43 and the medium-pressure blower 54. The static controller 74 is connected to the static discharge needle and the static power supply 75. The relay 76 controls the circuit switch.

[0030] The outside of the powder storage chamber 2 of the present utility model is wrapped with a silica gel heating sheet, and a powder liquid level sensor is arranged at the bottom of the powder storage chamber 2. The powder liquid level sensor is connected to the control system.

[0031] A three-color warning light 8 is further arranged above the frame 1 of the present utility model, and the three-color warning light 8 is connected to the control system.

[0032] An air vibrator is further connected between the nozzle support 53 and the powder spraying chamber 3 of the present utility model.

[0033] One side of the powder storage chamber 2 of the present utility model is provided with a feeding port, a powder hopper 9 is arranged below the feeding port, and the powder hopper 9 is provided with a powder hopper cover 10.

[0034] On both sides of the frame 1 of the present utility model, height adjustment mechanisms are provided. The height adjustment mechanisms include casters 11 and lifting support feet 12, and the lifting support feet 12 are arranged on the casters 11.

[0035] Specifically, the working process of the present utility model is as follows:

[0036] (1) Preparation and startup: The operator turns on the main power supply of the equipment through the load switch 712, and each electrical component in the electrical box 71 starts to work. The operator uses the touch screen 721 to set the equipment parameters, including powder spraying concentration, powder pump speed, stirring speed, etc.

[0037] (2) Preparation of talcum powder: The talcum powder is added into the powder storage chamber 2 through the feeding port. The powder level sensor at the bottom of the powder storage chamber 2 detects the powder level of the talcum powder to prevent abnormal powder levels. The silica gel heating sheet wrapped outside the powder storage chamber 2 heats the talcum powder to prevent powder caking.

[0038] (3) Powder stirring and conveying: The stirrer 41 rotates synchronously with the stirring shaft synchronous pulley 42 through a belt under the drive of the stirring motor 43 to ensure that the talcum powder is evenly dispersed in the powder storage chamber 2. The medium-pressure blower 54 sucks the powder from the opening on the side of the powder storage chamber 2 and conveys it to the nozzle 52 in the powder spraying chamber 3 through the powder pipe 51.

[0039] (4) Electrostatic spraying process: The wire and cable pass through the wire passing hole 31 of the powder spraying chamber 3, pass through the inside of the powder spraying chamber 3, and finally pass out from the wire passing hole 31 on the other side. When threading, the upper cover 32 above the powder spraying chamber 3 can be opened to facilitate the threading operation of the wire and cable. The nozzle 52 is fixed by the nozzle bracket 53 and sprays talcum powder. The electrostatic discharge needle at the center of the nozzle 52 is connected to the high-voltage module. Through electrostatic action, the talcum powder is evenly attached to the surface of the wire and cable.

[0040] (5) Powder recovery and environmental protection treatment: The negative pressure chambers 61 on both sides of the powder spraying chamber 3 are connected through the filter element chamber 62, and the environmental protection filter element in the filter element chamber 62 is used for filtering. The medium-pressure blower 54 generates negative pressure above the filter element chamber 62 to prevent powder overflow and keep the operating environment clean. The filter element chamber 62 is connected to the powder storage chamber 2 below to recover the unadhered talcum powder and reduce powder waste.

[0041] (6) Control and monitoring: The touch screen 721 provides real-time display and parameter adjustment functions, allowing operators to monitor and adjust the operating status of the equipment. The static electricity controller 74 regulates the voltage of the static electricity discharge needle to ensure the stability and uniformity of electrostatic spraying. The relay 76 controls the switch of the circuit, protects the motor and other electrical components, and ensures the safe operation of the equipment. The three-color warning light 8 displays the operating status and alarm information of the equipment, and the illuminated button provides feedback on equipment operation.

[0042] Through the above steps, the electrostatic powdering machine of the present utility model realizes the uniform coating of talcum powder on the surface of wire and cable, ensuring the high efficiency, environmental protection and stability of the production process.

[0043] It should be noted that the attached drawings only illustrate the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited by this shape. For those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements all fall within the protection scope of the claims of the present utility model.

Claims

1. A new type of electrostatic powder spraying machine, comprising a frame, a powder storage chamber, a powder spraying chamber, a stirring component, a powder spraying mechanism, and a negative pressure device, characterized in that: The frame bears the powder storage chamber and the powder spraying chamber, and the powder storage chamber is arranged directly below the powder spraying chamber; The stirring component includes a stirrer, a stirrer shaft synchronous pulley, and a stirring motor. The stirrer crosses the powder storage chamber, and the other end of the stirrer is connected to the stirrer shaft synchronous pulley at the rear of the powder storage chamber. The stirrer shaft synchronous pulley is connected with a belt, and the other end of the belt is driven by the stirring motor; One wire passing hole is provided on each side of the powder spraying chamber, and an upper cover is arranged above the powder spraying chamber. The powder spraying mechanism includes a powder pipe, a nozzle, a nozzle support, and a medium-pressure fan. The powder pipe is connected to the nozzle. One end of the nozzle support is connected to the powder spraying chamber, and the nozzle support is used to fix the nozzle. The medium-pressure fan is arranged outside the side of the powder storage chamber. The air inlet of the medium-pressure fan is connected to the side opening of the powder storage chamber, and the air outlet of the medium-pressure fan is connected to the powder pipe; An electrostatic discharge needle is provided at the center of the nozzle, and the electrostatic discharge needle is connected to a high-voltage module, and the high-voltage module is connected to a high-voltage control board; The negative pressure device includes a negative pressure chamber and a filter element chamber. The negative pressure chamber is arranged on both sides inside the powder spraying chamber. The negative pressure chamber is connected to the filter element chamber. An environmental protection filter element is arranged in the filter element chamber. The upper part of the filter element chamber is connected to a medium-pressure fan, and the lower part of the filter element chamber is connected to the powder storage chamber.

2. The novel electrostatic powdering machine according to claim 1, wherein: The electrostatic powder passing machine further includes a control system, and the control system includes an electric box, an operation box, a frequency converter, an electrostatic controller, an electrostatic power supply, and a relay. The electric box houses all electrical control components. An electric box door lock and a load switch are arranged on the electric box. A touch screen and control buttons are arranged on the operation box. The frequency converter is connected to the stirring motor and the medium-pressure fan. The electrostatic controller is connected to the electrostatic discharge needle and the electrostatic power supply. The relay controls the circuit switch.

3. The novel electrostatic powdering machine according to claim 2, wherein: The outside of the powder storage chamber is wrapped with a silica gel heating sheet, and a powder liquid level sensor is arranged at the bottom of the powder storage chamber. The powder liquid level sensor is connected to the control system.

4. The novel electrostatic powdering machine according to claim 3, wherein: A three-color warning light is further arranged above the frame, and the three-color warning light is connected to the control system.

5. The novel electrostatic powder spraying machine according to claim 1, wherein: An air vibrator is also connected between the nozzle support and the powder spraying chamber.

6. The novel electrostatic powdering machine according to claim 1, characterized in that: A feeding port is arranged on one side of the powder storage chamber, a powder hopper is arranged below the feeding port, and the powder hopper is provided with a powder hopper cover.

7. The novel electrostatic powdering machine according to claim 1, wherein: Height adjustment mechanisms are arranged on both sides of the frame, and the height adjustment mechanisms include casters and lifting support feet. The lifting support feet are arranged on the casters.

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