Electrostatic discharge device for paint production

Abstract

This utility model relates to the technical field of static electricity elimination devices, and discloses a static electricity elimination device for paint production. It includes a stirring drum, with a rotating shaft rotatably connected to the top and bottom of the drum via bearings. A stirring rod is mounted on the rotating shaft, which is connected to a motor located at the top of the drum. The bearing at the top is a conductive bearing. Multiple through holes are evenly distributed at the top of the drum, and static electricity discharge devices are installed within these holes, contacting the conductive bearings. The static electricity discharge devices are connected to a metal conductive wire attached to the outer wall of the drum. A metal disc is located at the bottom of the drum, and the metal conductive wire is connected to the metal disc. The metal disc is connected to a grounding pin via a grounding wire. This utility model eliminates static electricity generated inside the stirring equipment during paint production, as well as static electricity generated during paint discharge.

Description

Technical Field

[0001] This utility model relates to the technical field of static electricity elimination devices, and in particular to a static electricity elimination device for paint production. Background Technology

[0002] During the paint production process, static electricity is easily generated inside the mixing equipment. Static electricity can easily discharge, which may cause the equipment to catch fire or explode, posing a certain safety hazard. In addition, static electricity can also accumulate in the discharge pipe after prolonged use during paint discharge. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an electrostatic discharge device for paint production, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a static electricity elimination device for paint production, comprising a stirring drum, wherein the top and bottom of the stirring drum are rotatably connected to a rotating shaft via bearings, a stirring rod is provided on the rotating shaft, the rotating shaft is connected to a motor provided at the top of the stirring drum, the bearing at the top is a conductive bearing, a plurality of through holes are evenly distributed at the top of the stirring drum, a static electricity discharge device is installed in the through holes, the static electricity discharge device is in contact with the conductive bearing, the static electricity discharge device is connected to a metal conductive wire, the metal conductive wire is attached to the outer wall of the stirring drum, a metal disk is provided at the bottom of the stirring drum, the metal conductive wire is connected to the metal disk, and the metal disk is connected to a grounding nail via a grounding wire.

[0005] Furthermore, an outer cylinder is provided on the outside of the stirring cylinder, and an interlayer is provided between the outer cylinder and the outer wall of the stirring cylinder.

[0006] Furthermore, a gas distribution box is provided at the top of the stirring drum, and the bottom of the gas distribution box is fixed to the top of the stirring drum by a support rod. A fan, a heater and an ion generator are connected in sequence at the top of the gas distribution box. The ion generator is connected to the center of the top of the gas distribution box through an ion air duct. Multiple gas distribution pipes are evenly distributed on the side of the gas distribution box, and the gas distribution pipes are connected to the interlayer.

[0007] Furthermore, the static electricity discharge device includes a pin inserted from the outside of the through hole, a connecting plate provided at the outer end of the pin, a rod extending from the inner end of the pin, a spring fixed at the end of the rod, a connecting rod fixed at the other end of the spring, and a movable column connected to the connecting rod. The movable column presses against the outer ring of the conductive bearing under the action of the spring.

[0008] Furthermore, the end surface of the movable column is an arc surface that matches the outer ring surface of the conductive bearing.

[0009] Furthermore, the spring is made of phosphor bronze or beryllium bronze, and the static discharge device, except for the spring, is made of silver-plated copper alloy.

[0010] Furthermore, the metal conductive wire is fixed together with the connecting plate by conductive welding.

[0011] Furthermore, the stirring cylinder is made of conductive metal material, and the outer cylinder is made of plastic material. Beneficial effects

[0012] Compared with the prior art, the present invention has at least the following advantages: 1. Static electricity generated during the mixing process is transferred to the conductive bearing via the stirring rod and rotating shaft. The conductive bearing, pressed against the outside by a spring, discharges the static electricity through a connecting rod, spring, insert rod, pin, and connecting plate. The discharged static electricity is then transmitted to the metal disc via a metal conductive wire, and finally conducted to the ground via a grounding wire and grounding pin. Static electricity generated by friction between the paint and the inner wall of the mixing drum adheres directly to the drum. This static electricity then travels through the drum, metal conductive wire, metal disc, grounding wire, and grounding pin before finally being conducted to the ground.

[0013] 2. The fan, heater and ion generator work together to form a heated ion wind, which on the one hand heats the coating inside the mixing drum to improve its fluidity, and on the other hand neutralizes the static charge accumulated on the surface of the mixing drum to further reduce the risk of static electricity.

[0014] 3. The evenly distributed gas distribution pipes ensure that the ion wind fully covers the surface of the stirring drum. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Figure 3 This utility model Figure 1 A magnified schematic diagram of a portion of structure A.

[0018] Figure 4 for Figure 1 A magnified schematic diagram of part B.

[0019] The diagram is labeled as follows: 1-Stirring drum; 2-Support leg; 3-Outer cylinder; 4-Interlayer; 5-Metal conductive wire; 6-Static discharge device; 61-Connecting plate; 60-Pin; 62-Pin rod; 63-Moving column; 64-Connecting rod; 65-Spring; 7-Conductive bearing; 8-Rotating shaft; 9-Stirring rod; 10-Motor; 11-Gas distribution box; 12-Air duct; 14-Fan; 15-Cold air duct; 16-Heater; 17-Ion generator; 18-Hot air duct; 19-Ion air duct; 20-Metal disc; 21-Grounding wire; 22-Grounding nail; 23-Through hole; 24-Groove; 25-Fixing ear; 26-Sealing ring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] See Figures 1-4This embodiment provides an electrostatic discharge device for paint production, including a stirring drum 1. The top and bottom of the stirring drum 1 are rotatably connected to a rotating shaft 8 via bearings. Multiple stirring rods 9 are mounted on the rotating shaft 8. The rotating shaft 8 and stirring rods 9 are made of conductive metal. A conductive metal discharge pipe is provided at the bottom of the stirring drum 1. The rotating shaft 8 is connected to a motor 10 located at the top of the stirring drum 1. The bearing at the top is a conductive bearing 7. Multiple through holes 23 are evenly distributed at the top of the stirring drum 1. Electrostatic discharge devices 6 are installed within the through holes 23 and are in contact with the conductive bearings 7. The electrostatic discharge devices 7 are connected to a metal conductive wire 5. A groove 24 is provided on the outside of the through holes at the top of the stirring drum 1. The metal conductive wire 5 is attached to the outer wall of the stirring drum 1. A metal disc 20 is provided at the bottom of the stirring drum 1. The metal conductive wire 5 is connected to the metal disc 20. The metal disc 20 is connected to a grounding nail 22 via a grounding wire 21, and the grounding nail 22 is inserted into the ground.

[0024] The stirring cylinder 1 is surrounded by an outer cylinder 3. The stirring cylinder 1 is made of conductive metal, while the outer cylinder 3 is made of plastic to protect the conductive metal wires. Multiple evenly distributed fixing ears 25 protrude from the top and bottom of the stirring cylinder 1, and correspondingly, multiple evenly distributed fixing ears 25 protrude from the top and bottom of the outer cylinder 3. Each fixing ear 25 has an opening. The fixing ears 25 of the stirring cylinder 1 and the outer cylinder 3 are fixedly connected by bolts, nuts, washers, etc., thereby fixing the outer cylinder 3 to the stirring cylinder 1. A sealing ring 26 is provided at the connection between the outer cylinder 3 and the stirring cylinder 1. A sandwich layer 4 is provided between the outer cylinder 3 and the outer wall of the stirring cylinder 1. A gas distribution box 11 is provided at the top of the stirring drum 1. The bottom of the gas distribution box 11 is fixed to the top of the stirring drum 1 by multiple support rods 13. A fan 14, a heater 16, and an ion generator 17 are provided at the top of the gas distribution box 11. The fan 14 is connected to the heater 16 through a cold air pipe 15. The heater 16 is connected to the ion generator 17 through a hot air pipe 18. The ion generator 17 is connected to the center of the top of the gas distribution box 11 through an ion air pipe 19. Multiple gas distribution pipes 12 are evenly distributed on the side of the gas distribution box 11 and are connected to the interlayer 4. Multiple exhaust ports are evenly distributed at the bottom of the interlayer 4 in a circular pattern.

[0025] The electrostatic discharge device 6 includes a pin 60 inserted from the outside of the through hole 23. A connecting plate 61 is provided at the outer end of the pin 60, and the connecting plate 61 is located in the groove 23. A rod 62 extends from the inner end of the pin 60, and a spring 65 is fixed to the end of the rod 62. A connecting rod 64 is fixedly connected to the other end of the spring 65, and a movable column 63 is connected to the connecting rod 64. The movable column 63 presses against the outer ring of the conductive bearing 7 under the action of the spring 65. The end surface of the movable column 63 is an arc surface adapted to the surface of the outer ring of the conductive bearing 7, increasing the contact area between the movable column and the outer ring of the conductive bearing 7 and reducing the contact resistance. In this embodiment, the spring 65 is made of phosphor bronze or beryllium bronze, which enables the movable column 63 to maintain a long-term stable contact pressure. Except for the spring 65, the electrostatic discharge device 6 is made of silver-plated copper alloy. The metal conductive wire 5 is fixed to the connecting plate 61 by conductive welding. The metal conductive wire 5 is fixed to the outer wall of the stirring drum 1 by conductive welding. Conductive welding is an existing welding technology. The metal conductive wire 5 extends from the interlayer 4 and connects to the metal disk 20.

[0026] Working Principle: Static electricity generated during coating mixing is transferred to the conductive bearing via the stirring rod and rotating shaft. The conductive bearing, pressed against the outside by a spring, conducts static electricity through a connecting rod, spring, insert rod, insert pin, and connecting plate. The discharged static electricity is then transmitted to a metal disc via a metal conductive wire, and finally conducted to the ground via a grounding wire and grounding pin. Static electricity generated by friction between the coating and the inner wall of the mixing drum adheres directly to the drum. This static electricity travels through the drum, metal conductive wire, metal disc, grounding wire, and grounding pin before finally being conducted to the ground. A fan, heater, and ion generator work together to create heated ionizing air. This ionizing air is blown into the jacket and flows within it, heating the coating inside the mixing drum to maintain its fluidity and neutralizing the static charge accumulated on the drum's surface, further reducing the risk of static electricity buildup. Evenly distributed air distribution pipes ensure that the ionizing air fully covers the surface of the mixing drum. Static electricity generated during coating discharge is conducted to the ground sequentially through conductive metal discharge pipes, the mixing drum, metal conductive wire, metal disc, grounding wire, and grounding pin.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A static electricity elimination device for paint production, characterized in that, The device includes a stirring drum, with a rotating shaft rotatably connected to its top and bottom via bearings. A stirring rod is mounted on the rotating shaft, which is connected to a motor located at the top of the stirring drum. The bearing at the top is a conductive bearing. Multiple through holes are evenly distributed at the top of the stirring drum, and an electrostatic discharge device is installed in each through hole. The electrostatic discharge device is in contact with the conductive bearing, and a metal conductive wire is connected to the electrostatic discharge device. The metal conductive wire is attached to the outer wall of the stirring drum. A metal disc is located at the bottom of the stirring drum, and the metal conductive wire is connected to the metal disc. The metal disc is connected to a grounding pin via a grounding wire.

2. The electrostatic discharge device for paint production according to claim 1, characterized in that, The stirring cylinder is provided with an outer cylinder, and an interlayer is provided between the outer cylinder and the outer wall of the stirring cylinder.

3. The electrostatic discharge device for paint production according to claim 2, characterized in that, A gas distribution box is provided at the top of the stirring drum. The bottom of the gas distribution box is fixed to the top of the stirring drum by a support rod. A fan, a heater and an ion generator are connected in sequence at the top of the gas distribution box. The ion generator is connected to the center of the top of the gas distribution box through an ion air duct. Multiple gas distribution pipes are evenly distributed on the side of the gas distribution box and are connected to the interlayer.

4. The electrostatic discharge device for paint production according to claim 1, characterized in that, The static electricity discharge device includes a pin inserted from the outside of a through hole. A connecting plate is provided at the outer end of the pin, and a rod extends from the inner end of the pin. A spring is fixed at the end of the rod, and a connecting rod is fixed at the other end of the spring. The connecting rod is connected to a movable column, and the movable column presses against the outer ring of the conductive bearing under the action of the spring.

5. The electrostatic discharge device for paint production according to claim 4, characterized in that, The end surface of the movable column is an arc surface that matches the outer ring surface of the conductive bearing.

6. The electrostatic discharge device for paint production according to claim 4, characterized in that, The spring is made of phosphor bronze or beryllium bronze, and the static discharge device, except for the spring, is made of silver-plated copper alloy.

7. The electrostatic discharge device for paint production according to claim 4, characterized in that, The metal conductive wire is fixed together with the connecting plate by conductive welding.

8. The electrostatic discharge device for paint production according to claim 2, characterized in that, The stirring cylinder is made of conductive metal material, and the outer cylinder is made of plastic material.

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