CN211656491U

CN211656491U - Plasma rotating spray gun

Info

Publication number: CN211656491U
Application number: CN202020231266.8U
Authority: CN
Inventors: 蔡善明
Original assignee: Dongguan Yaotian Electric Technology Co ltd
Current assignee: Dongguan Yaotian Electric Technology Co ltd
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2020-10-09
Anticipated expiration: 2030-03-01

Abstract

The utility model discloses a rotatory spray gun of plasma, including the rifle body, install rotatable barrel, power unit on the rifle body and the rotatory fixed body of being connected with power unit, be connected through electrically conductive carbon brush electricity between the rifle body and the rotatory fixed body, this patent replaces the bearing to be connected the rifle body with the rotatory fixed body electricity through setting up an electrically conductive carbon brush, makes the bearing not regard as direct circular telegram medium, prevents that bearing or motor from being burnt out, extension spray gun life.

Description

Plasma rotating spray gun

Technical Field

The utility model relates to a spray gun technical field especially relates to a plasma rotating spray gun.

Background

The plasma spray gun is used for material surface strengthening and surface modification, so that the surface of a product has the performances of wear resistance, corrosion resistance, high-temperature oxidation resistance, electric insulation, heat insulation, radiation protection, wear reduction, sealing and the like.

Disclosure of Invention

In order to solve the above-mentioned prior art drawback, the utility model provides a plasma rotating spray gun, concrete technical scheme is as follows: a plasma rotating spray gun comprises a gun body, an electrode, a rotatable gun barrel arranged on the gun body, a power mechanism and a rotating fixing body connected with the power mechanism, and is characterized in that the gun body is electrically connected with the rotating fixing body through a conductive carbon brush.

The power mechanism comprises a motor arranged in the gun body, a synchronizing wheel connected with the motor and a bearing, the rotating and fixing body is arranged on the bearing, the synchronizing wheel is connected with the bearing through a transmission device, the motor drives the synchronizing wheel to rotate, and the synchronizing wheel drives the bearing, the rotating and fixing body and the gun barrel to rotate through the transmission device.

The gun body is also provided with a sensor, the periphery of the rotary fixing body is uniformly provided with a plurality of permanent magnets, and when each permanent magnet rotationally sweeps across the sensor, the sensor is triggered to generate a level signal.

One end of the sensor is also connected with a micro control unit which is used for processing level signals generated by the sensor

The micro control unit is a PLC or a microcomputer controller.

The sensor is a Hall sensor.

Three permanent magnets are arranged on the periphery of the rotary fixed body, and are uniformly distributed at 120 degrees on the periphery of the bearing.

Install electrode, insulating ceramic and the fixed cover of pottery that stretches into in the rifle pipe on rotatory fixed body, insulating ceramic cover is located the electrode is peripheral, and the fixed cover of pottery is located on insulating ceramic, and the fixed cover of pottery cup joints in the rifle pipe, and the barrel head still is provided with a shower nozzle.

The technical effect of this patent lies in: the gun body is electrically connected with the rotary fixing body by arranging the conductive carbon brush to replace the bearing, so that the bearing is not used as a direct electrifying medium, the bearing or the motor is prevented from being burnt out, and the service life of the spray gun is prolonged.

Drawings

FIG. 1 is a schematic view of the complete installation of the plasma rotating torch of the present invention;

fig. 2 is an exploded view 1 of the plasma rotating torch of the present invention;

fig. 3 is an exploded view of the plasma rotating torch of the present invention, fig. 2;

in the figure, 1 gun body, 11 motor, 12 synchronizing wheel, 13 bearing, 14 rotating fixed body, 141 permanent magnet, 15 transmission device, 16 sensor, 17 conductive carbon brush, 2 gun barrel, 21 electrode, 22 insulating ceramic, 23 ceramic fixed sleeve and 24 spray head.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

In the description of the present invention, it should be noted that the terms "center, upper, lower, left, right, vertical, horizontal, inner, outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms first, second, third, and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted, connected" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the terms in the present invention can be understood in a specific case to those skilled in the art.

Referring to fig. 1 to 3, a plasma rotating spray gun includes a gun body, an electrode, a rotatable gun barrel mounted on the gun body, a power mechanism, and a rotating fixing body connected to the power mechanism, wherein the gun body is electrically connected to the rotating fixing body through a conductive carbon brush. According to the scheme, the conductive carbon brush 17 is arranged between the gun body 1 and the rotary fixing body 14 to replace the bearing 13 to electrically connect the gun body 1 and the rotary fixing body 14, so that the bearing 13 is not used as a direct electrifying medium, the bearing 13 or the motor 11 is prevented from being burnt out, and the service life of the spray gun is prolonged.

Further, the power mechanism comprises a motor 11 arranged in the gun body 1, a synchronizing wheel 12 connected with the motor 11 and a bearing 13, wherein a rotating fixing body 14 is installed on the bearing 13, the synchronizing wheel 12 is connected with the bearing 13 through a transmission device 15, the motor 11 drives the synchronizing wheel 12 to rotate, and the synchronizing wheel 12 drives the bearing 13, the rotating fixing body 14 and the gun barrel 2 to rotate through the transmission device 15.

The gun body 1 is also provided with a sensor 16, the periphery of the rotary fixing body 14 is uniformly provided with a plurality of permanent magnets 141, and when each permanent magnet 141 rotates and sweeps across the sensor 16, the sensor 16 is triggered to generate a level signal. The permanent magnets 141 are uniformly arranged on the periphery of the rotating and fixing body 14, that is, the lengths of arcs between adjacent permanent magnets 141 are the same, and when the spray gun rotating and fixing body 14 rotates normally at a constant speed, the time intervals T between adjacent permanent magnets 141 successively scanning the sensor 16 are the same (here, T represents the time interval, that is, the time interval from the previous permanent magnet 141 scanning the sensor 16 to the next permanent magnet 141 scanning the sensor 16), and in a normal condition, the value of T is basically fixed or only slightly fluctuates, and if the value of T changes obviously in the process of operating the spray gun, the rotating speed of the spray gun changes obviously, and does not rotate at a constant speed any more, so that the normal spraying process is affected, and the products are difficult to be sprayed uniformly. The scheme detects whether the spray gun normally rotates and whether the rotating speed meets the requirement through the structural design and the principle.

One end of the sensor 16 is also connected with a micro control unit for processing level signals generated by the sensor. In this embodiment, when the adjacent sensors 141 sweep the sensor 16 successively, the time interval T is transmitted to the micro control unit through the level signal, and the micro control unit monitors whether the value of T changes, so as to detect whether the rotation speed of the spray gun changes.

The micro control unit is a PLC or a microcomputer controller.

The sensor is a Hall sensor. The Hall sensor has the advantages of sensitivity to a magnetic field, simple structure, small size, wide frequency response, large output voltage change, long service life and the like, so that the Hall sensor is applied to the patent, the space can be saved, the spray gun is lighter, and the service life of the spray gun can be prolonged.

Three permanent magnets are arranged on the periphery of the rotary fixed body, and are uniformly distributed at 120 degrees on the periphery of the bearing. In this scheme, also can be according to the difference of spraying product, the rotational speed of adjustment spray gun, further adjust the quantity of permanent magnet 131 according to the rotational speed again, and this patent is rotatory fixed body 14 periphery and is not limited to only setting up three permanent magnet promptly. When the plasma jet gun is used, the motor 11 is started, the motor 11 rotates to drive the front end synchronizing wheel 12 to rotate, the synchronizing wheel 12 rotates to drive the rotary fixing body 14 to rotate through the bearing 13, so that the electrode 21, the insulating ceramic 22, the ceramic fixing sleeve 23, the gun barrel 2 and the nozzle 24 are driven to rotate, plasma flow reaches the nozzle through the inner cavities of the bearing 13, the insulating ceramic 22 and the gun barrel 2, and plasma jet is achieved.

The above-mentioned embodiments only express some embodiments of the present patent, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present patent. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the patent concept, which falls within the scope of protection of the patent. Therefore, the protection scope of this patent shall be subject to the appended claims.

Claims

1. A plasma rotating spray gun comprises a gun body, a rotatable gun barrel, a power mechanism and a rotating fixing body, wherein the rotatable gun barrel is installed on the gun body, the rotating fixing body is connected with the power mechanism, and the plasma rotating spray gun is characterized in that the gun body is electrically connected with the rotating fixing body through a conductive carbon brush.

2. The plasma rotary torch according to claim 1, wherein the power mechanism comprises a motor disposed in the torch body, a synchronizing wheel connected to the motor, and a bearing, the rotation fixing body is mounted on the bearing, the synchronizing wheel is connected to the bearing through a transmission device, the motor drives the synchronizing wheel to rotate, and the synchronizing wheel drives the bearing, the rotation fixing body, and the torch to rotate through the transmission device.

3. The plasma rotating spray gun of claim 1 wherein a sensor is disposed outside the gun body, a plurality of permanent magnets are uniformly disposed around the periphery of the rotating fixed body, and each permanent magnet rotates across the sensor to trigger the sensor to generate a level signal.

4. The plasma spin gun of claim 3, wherein a micro control unit is further connected to one end of the sensor, the micro control unit being configured to process the level signal generated by the sensor.

5. The plasma spin gun of claim 4, wherein the micro control unit is a PLC or a microcomputer controller.

6. The plasma spin gun of claim 3, wherein the sensor is a Hall sensor.

7. The plasma rotary torch according to claim 3, wherein the three permanent magnets are provided on the outer circumference of the rotary stationary body and are uniformly distributed at 120 ° on the outer circumference of the bearing.

8. The plasma spray gun as claimed in claim 1, wherein an electrode, an insulating ceramic and a ceramic fixing sleeve are installed on said rotating fixing body and extend into the gun barrel, said insulating ceramic is sleeved on the periphery of said electrode, said ceramic fixing sleeve is sleeved on the insulating ceramic, said ceramic fixing sleeve is sleeved in the gun barrel, and a nozzle is further installed on the head of said gun barrel.