CN217411145U - Electrostatic powder spray gun with charge loading module - Google Patents

Abstract

The utility model provides a powder electrostatic spray gun of charged load module relates to powder electrostatic spray gun technical field, including spray tube and charged load module, the spray gun is provided with the diffusion dish, the diffusion dish is used for to radiation blowout powder coating all around, the jet orifice department at the spray tube is installed to the diffusion dish, charged load module sets up on spray tube and diffusion dish, charged load module is used for making the powder coating who erupts to have static. The application provides a charged load module's powder electrostatic spray gun has advantages such as the powder rate is high, the spraying is of high quality.

Description

Powder electrostatic spray gun with charge load module

Technical Field

The disclosure relates to the technical field of electrostatic powder spray guns, in particular to an electrostatic powder spray gun with a charge loading module.

Background

The electrostatic powder spray gun is mainly a spraying tool for coating the surface of a workpiece, and is mainly applied to coating of metal and other surface conductive materials. The electrostatic powder spray gun sprays the dispersed powder paint particles from the gun mouth, the powder paint particles need to be charged with electrostatic charges through a corona field, the corona field is formed by radiation of an electrode needle which discharges high-voltage static electricity through a nozzle, the powder paint particles with electrostatic charges can be adsorbed on the surface of a sprayed workpiece, and the spraying process is an electrostatic spraying process.

At present, some related technical solutions of spray guns capable of spraying charged powder exist in the prior art, for example, the publication number is: the invention of CN111203334A discloses a spray head for an electrostatic spray gun, and particularly discloses that the spray head comprises a spray head shell, a conducting ring, a powder pipe, an electrode needle and a spray nozzle, wherein a step surface is arranged in the spray head shell, a limiting edge matched with the step surface in the spray head shell is arranged on the outer wall of the spray nozzle, the conducting ring is arranged in the spray head shell and limits the limiting edge of the spray nozzle, the powder pipe is arranged in a central hole of the conducting ring, the electrode needle frame is arranged in the powder pipe, the electrode needle is inserted and connected on the electrode needle frame, the electrode needle is arranged on a central shaft of the spray nozzle, the spray nozzle comprises a conical pressurizing part, a straight pipe pressure maintaining part and a horn mouth nozzle part, and powder is pressurized by the pressurizing part, stabilized and maintained by the straight pipe and sprayed by the horn mouth nozzle, so that the pressure is uniform when the powder is sprayed, and the sprayed powder is uniformly mixed with air. Among this technical scheme, the electrode needle sets up on the center pin of nozzle, fixes the electrode needle through conducting ring and electrode needle frame, and the electrode needle only is provided with one, and on the center pin of nozzle, the corona radiant surface that the electrode needle produced is narrower, and spun powder coating can not take static because of the part can not be charged, and the powder coating who does not take static drops after the blowout easily, can't adsorb by the spraying work piece on, influences the powder rate on the spraying greatly.

For example, the publication number is: the invention patent of CN113245084A discloses a charge loading module and a powder electrostatic spray gun, and specifically discloses that the charge loading module includes a ring housing and a plurality of suction needles, one end of each suction needle is fixedly installed in the ring housing, an air hole is arranged on the upper surface of the ring housing, the other end of each suction needle penetrates out of the ring housing through the air hole, the ring housing is provided with an air pipe, and air is introduced from the air pipe and discharged from the air hole. The electrostatic powder spraying gun further comprises a powder electrostatic spraying gun provided with the charge load module, the charge load module is sleeved on a gun head of the spraying gun, and an air pipe of the charge load module is communicated with an air pipeline in the spraying gun. However, the charge load module provided by the technical scheme is in a regular circular ring shape, the installation distance of the charge load module is a certain distance away from the spray opening of the spray gun, the spraying efficiency is reduced, the structure of the charge load module is fixed, the charge load module is not suitable for other electrostatic spray guns, and the use and installation are still inconvenient.

In the prior art, a plurality of spray guns are required to be arranged and combined to obtain a large-spraying-range spraying effect, but the problem of uneven coating coverage exists in the spraying of a plurality of spray guns. From the present disclosure, the powder electrostatic spray gun used in practice has the problems of small corona radiation range, uneven charging of the powder coating material, low powder coating rate and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a powder electrostatic spray gun of charged load module, has advantages such as the powder rate is high, the spraying is of high quality to the powder electrostatic spray gun among the prior art has that corona radiation scope is little, powder coating is electrified inhomogeneous, the powder rate is low.

One of the concepts of the present disclosure is to provide an electrostatic powder spray gun with a charge loading module, which includes a spray tube and the charge loading module, wherein the spray gun is provided with a diffusion plate, the diffusion plate is used for spraying powder coating to the periphery in a radiation manner, the diffusion plate is installed at a spray opening of the spray tube, the charge loading module is arranged on the spray tube and the diffusion plate, and the charge loading module is used for enabling the sprayed powder coating to have static electricity.

The electrostatic powder spray gun in the prior art is characterized in that an electrode needle is arranged in the middle of a diffusion disc, only one electrode needle is arranged, a corona radiation surface is narrow, and sprayed powder coating cannot be adsorbed on a sprayed workpiece because part of the powder coating cannot be charged and does not have static electricity, so that the powder coating falls off after being sprayed, and the powder coating rate in spraying is greatly influenced. And this technical scheme is through setting up the charge load module, greatly increased the scope of corona radiation for the powder coating that erupts can be more comprehensive obtains high-voltage static, thereby under the condition that has increased the range of spouting, has increased the adsorption affinity between powder coating and the product of being sprayed again, and then improves the whitewashed rate, has improved the spraying quality and the spraying efficiency of spray gun greatly.

Further, another concept of the present disclosure is that the charge loading module includes an electrode ring and an electrode pin, the electrode pin is mounted on the electrode ring, and a conductive member is connected to a tail portion of the electrode pin.

Furthermore, the inner side of the electrode ring is matched with the outer wall of the diffusion disc, and the diffusion disc and the electrode ring form a horn cylinder shape.

In the prior art, most of powder electrostatic spray guns are provided with a diffusion disc arranged at the front end of a high-voltage electrostatic insulating tube positioned at the axis position of a spray pipe, a distance is reserved between the diffusion disc and a spray pipe opening, powder coating sprayed from the spray pipe opening is sprayed to the back of the outer side of a bell mouth of the diffusion disc, and the powder coating is sprayed out in a radiation mode to the periphery and clings to the outer side of the diffusion disc, so that the spraying amplitude of the powder coating is small. And this technical scheme is through setting up the diffusion dish in the shower nozzle tip of spray gun, make shower nozzle department spun powder coating spray in the inboard of diffusion dish, powder coating pastes diffusion dish inner wall and to the radiation blowout all around, the loudspeaker tube-shape injection structure that diffusion dish and electrode ring formed, make the powder coating who jets along diffusion dish inner wall pass electrode ring corona charging, make the powder coating who passes take high-voltage static, and even spraying adsorbs to the surface by the spraying product, through the loudspeaker tube-shape injection structure of electrode ring and diffusion dish formation, greatly increased powder coating's injection area, and spray evenly non-overlapping, the range of spouting of powder coating has been increased, improve spraying quality and spraying efficiency.

Furthermore, the electrode ring is provided with an electrode needle through hole, the electrode needle through hole is used for installing an electrode needle, and one end of the electrode needle is inserted into the electrode needle through hole.

Furthermore, a plurality of electrode needle through holes are arranged along the circumferential direction of the electrode ring; the diameter of the electrode needle through hole is larger than that of the electrode needle.

This technical scheme is through setting up a plurality of electrode needle through-hole on the electrode ring for installation electrode needle, electrode needle lay quantity greatly increased, thereby increased the corona radiation scope, and be provided with electrically conductive piece at the electrode needle afterbody and be used for connecting the metal sheet, improved work efficiency greatly.

Furthermore, another concept of the present disclosure is that the charge loading module further includes a high voltage electrostatic generator and a sleeve, a high voltage electrostatic generator insulating housing is disposed outside the sleeve, a high voltage electrostatic generator is disposed inside the high voltage electrostatic generator insulating housing, and the sleeve is sleeved outside the spray pipe.

Furthermore, the sleeve is provided with an electrode ring mount for mounting an electrode ring.

Furthermore, a cavity is formed between the electrode ring and the electrode ring base and used for gas circulation, and the electrode ring base is provided with a gas pipe connector.

In the actual use process, the surface of the electrode needle is easy to adsorb and accumulate powder due to high-voltage static electricity, so that the electrostatic corona release is influenced, and the spraying efficiency is influenced. And among this technical scheme, make the installation of charge load module more convenient, stable through setting up the sleeve, and set up electrode ring base on the sleeve and be used for installing the electrode ring, make to form the cavity that can circulate gas between electrode ring and the electrode ring base, the diameter that sets up the electrode needle through-hole is greater than the electrode needle diameter, set up the trachea interface at the electrode ring base, when trachea interface inserts compressed air, the electrode needle through-hole is outwards blown, make the electrode needle periphery have the gas circulation, avoid the powder to adsorb on the electrode needle surface, improve spraying efficiency.

The application provides a pair of powder electrostatic spray gun of charged load module, through setting up the charged load module suit on diffusion dish and spray tube, the diffusion dish constitutes the spraying structure of loudspeaker tube-shape with the spray tube, and diffusion dish cover is equipped with the electrode ring, make the range greatly increased of spray gun, and the powder coating of injection is electrified even, improve spraying quality and efficiency, and set up the cavity that has gas flow between electrode ring and the electrode ring base, when inserting compressed air, gaseous putting outward from the electrode needle through-hole, make the electrode needle surface not adsorb the powder, avoid influencing electrostatic corona discharge.

The utility model provides a powder electrostatic spray gun of charged load module, including spray tube and charged load module, the spray gun is provided with the diffusion dish, the diffusion dish is used for to radiation blowout powder coating all around, the jet orifice department at the spray tube is installed to the diffusion dish, charged load module sets up on spray tube and diffusion dish, charged load module is used for making the powder coating who erupts to have static. The application provides a charged load module's powder electrostatic spray gun has advantages such as the powder rate is high, the spraying is of high quality.

Drawings

The present disclosure will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present disclosure. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1: the structure schematic diagram of a powder electrostatic spray gun with a charge loading module provided by the present disclosure;

FIG. 2 is a schematic diagram: the present disclosure provides a schematic cross-sectional view of an electrostatic powder spray gun with a charge loading module;

FIG. 3: the present disclosure provides a schematic structural diagram of a charge loading module in an electrostatic powder spray gun with the charge loading module;

FIG. 4: the charge loading module assembly structure of the present disclosure is an exploded view in partial section;

FIG. 5: the present disclosure provides another schematic structural diagram of an electrostatic powder spray gun with a charge loading module.

Wherein, 1, spray tube; 2. a charge loading module; 3. a diffusion disk; 4. a high voltage electrostatic generator; 5. an electrode ring; 6. a swirl generator; 7. a powder inlet; 8. an air inlet; 9. a sleeve; 10. a high voltage pack insulation shell; 11. an electrode ring base; 12. an electrode needle; 13. embedding a groove in an electrode ring; 14. a conductive plate; 15. a high voltage electrode; 16. an annular groove; 17. perforating a screw; 18. a screw post; 19. an electrode needle through hole; 20. a tracheal tube interface; 21. an annular seal; 22. a seal ring groove; 23. enclosing plates; 24. and (7) sealing the cover.

Detailed Description

The present disclosure is described in detail below with reference to fig. 1 to 5.

In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.

Example 1

As shown in fig. 1 to 5, the present embodiment provides a powder electrostatic spray gun with a charge load module, including a spray pipe 1 and a charge load module 2, the spray pipe 1 is used for conveying and spraying powder coating, the spray gun is provided with a spray head, the spray head is a spray orifice of the spray pipe 1, a diffusion disc 3 is provided at the end of the spray head, the spray head is used for spraying the powder coating to the periphery in a radiation manner, the charge load module 2 includes a high-voltage electrostatic generator 4 and an electrode ring 5, the electrode ring 5 is sleeved on the diffusion disc 3, the high-voltage electrostatic can be obtained more comprehensively by the sprayed powder coating, so that under the condition that the spray width is increased, the adsorption force between the powder coating and the sprayed product is increased, and the powder feeding rate is further improved. It should be noted that the electrostatic powder spray gun with the charge loading module provided by the application can be of a split type spray gun structure or an integrated type spray gun structure.

As shown in fig. 3, the inner side of the electrode ring 5 is matched with the outer wall of the diffusion disc 3, the diffusion disc 3 and the electrode ring 8 form a horn-shaped cylinder, so that the powder coating sprayed from the spray head is sprayed on the inner side of the diffusion disc 3, the powder coating is sprayed to the periphery along the inner wall of the diffusion disc 3 in a radiation manner, the periphery of the diffusion disc 3 surrounds the assembly structure of the electrode ring 5, the powder coating sprayed along the inner wall of the diffusion disc 3 passes through a corona field formed by the electrode ring 5, the powder coating passing through the corona field is charged with high-voltage static electricity, and the powder coating is uniformly sprayed and adsorbed on the surface of a sprayed product.

The electrostatic powder spraying gun provided by this embodiment, as shown in fig. 2, the spraying gun is composed of a swirl generator 6 and a spraying pipe 1, the swirl generator 6 is disposed at the rear part of the spraying gun, the spraying pipe 1 is disposed at the front part of the spraying gun, wherein the swirl generator 6 can also be one section of the spraying pipe 1 having air injection holes, a powder inlet 7 and an air inlet 8 are disposed at the bottom of the swirl generator 6, the powder inlet 7 is used for delivering powder coating into the swirl generator 6, the swirl generator 6 is used for uniformly rotating and dispersing the powder coating, the spraying pipe 1 and the air inlet 8 are used for providing high-speed air flow, the dispersed powder coating is driven by the air flow to rotate through the spraying pipe 1, pass through the diffusion plate 3, the rotating powder coating is diffused in a large area by the diffusion plate 3, and the sprayed dispersed powder coating is charged by corona radiated from the electrode ring 5 disposed at the periphery of the diffusion plate 3, the powder coating is electrostatically charged with high voltage and uniformly sprayed to adhere to the surface of the spray product, and the spraying is uniform and has no overlapped spraying surfaces.

Example 2

As shown in fig. 1 to 5, this embodiment provides an electrostatic powder spray gun based on embodiment 1, wherein the diffusion disc 3 and the electrode ring 5 are in a horn shape, the charge loading module 2 is composed of a sleeve 9, a high voltage electrostatic generator insulating shell 10, an electrode ring 5, an electrode ring base 11, an electrode needle 12, and the like, the high voltage electrostatic generator 4 is installed in the high voltage electrostatic generator insulating shell 10, the high voltage electrostatic generator insulating shell 10 is disposed outside the cylinder wall of the sleeve 9 and has a same direction as the sleeve 9, the sleeve 9 is sleeved outside the spray tube 1, the charge loading module 2 is connected to the spray gun through the sleeve 9, the electrode ring base 11 is disposed at the front end of the sleeve 9 and is integrated with the sleeve 9, the electrode ring base 11 is used for installing the electrode ring 5, the front end of the electrode ring base 11 is provided with an electrode ring caulking groove 13, the electrode ring caulking groove 13 has a circumferential direction, the bottom of the electrode ring caulking groove 13 is provided with a conductive plate 14 communicated with the high voltage electrostatic generator 4, and a screw through hole communicated with the high-voltage electrostatic generator insulating shell 10 is formed between the conductive plate 14 and the high-voltage electrostatic generator insulating shell 10, a conductive screw penetrates through the screw through hole from one side of the high-voltage electrostatic generator insulating shell 10 and is in threaded connection with a threaded hole on the conductive plate 14, and the conductive screw is in contact with a high-voltage electrode 15 at the front end of the high-voltage electrostatic generator 4.

As shown in fig. 4, an annular groove 16 is formed at one side of the electrode ring 5, a plurality of screw through holes 17 are formed at the bottom of the annular groove 16, the screw through holes 17 correspond to screw posts 18 arranged at the bottom of the electrode ring caulking groove 13, the electrode ring 5 is installed in the electrode ring caulking groove 13, notches of the electrode ring and the electrode ring are arranged oppositely, the electrode ring 5 is provided with electrode needle through holes 19, the electrode needle through holes 19 are used for installing electrode needles 12, a plurality of electrode needle through holes 19 are arranged along the circumferential direction of the electrode ring 5, the electrode needles 12 penetrate through the electrode needle through holes 19 and extend needle tips of the electrode needles 12 out of the electrode needle through holes 19, tails of the electrode needles 12 are connected by conductive rings, the conductive rings are also connected with the conductive plates 14 at the bottom of the electrode ring caulking groove 13, the conductive plates 14 are made of conductor materials, the arrangement number of the electrode needles 12 is greatly increased, so that the corona radiation range is increased, and the working efficiency is greatly improved.

Furthermore, a cavity is formed between the electrode ring 5 and the electrode ring base 11 for gas circulation, the electrode ring base 11 is provided with a gas pipe interface 20, the diameter of the electrode needle through hole 19 is larger than that of the electrode needle 12, the bottom of the electrode ring caulking groove 13 is also provided with an annular sealing gasket 21, a screw column arranged on the bottom of the electrode ring caulking groove 13 and a screw through hole on the electrode ring 5 are correspondingly installed and then are locked by a screw, after the screw is locked, the annular groove 16 compresses the annular sealing gasket 21, thereby, a sealing action of the annular groove 16 is achieved, so that a relatively sealed space is formed in the annular groove 16, the outlet which can be ventilated with the outside is only provided with an electrode needle through hole 19 and an air pipe interface 20, when the air pipe interface 20 is connected with compressed air, the electrode needle through hole 19 blows air outwards, so that the gas flows around the electrode needle 12, the powder is prevented from being adsorbed on the surface of the electrode needle 12, and the spraying efficiency is improved.

Furthermore, as shown in fig. 4, a sealing ring groove 22 is further provided on the inner side of the front portion of the electrode ring base 11, a sealing ring is mounted in the sealing ring groove 22, and a surrounding plate 23 is further provided on the outer side of the electrode ring base 11; the high-voltage electrostatic generator insulating shell 13 is internally provided with the high-voltage electrostatic generator 4, the rear opening of the high-voltage electrostatic generator 4 is provided with threads and is in threaded connection with a sealing cover 24 with a wiring port, a sealing ring is arranged in the sealing cover 24, the high-voltage electrostatic generator insulating shell 13 has good sealing performance, and the high-voltage electrostatic is effectively prevented from leaking at the rear part.

The application provides a pair of powder electrostatic spray gun of charged load module, through setting up 2 suits of charged load module on diffusion dish 3, charged load module 2 constitutes the spraying structure of loudspeaker tube-shape with diffusion dish 3, and 3 suits of diffusion dish are equipped with electrode ring 5, make the range greatly increased of spray gun, and the powder coating of spraying is electrified even, improve spraying quality and efficiency, and set up the cavity that has gas flow between electrode ring 5 and the electrode ring base 11, when inserting compressed air, gas is put outward from electrode needle through-hole 11, make electrode needle 12 surface not adsorb the powder, avoid influencing electrostatic corona discharge.

The present disclosure has been described in detail above, and the principles and embodiments of the present disclosure have been explained herein using specific examples, which are provided only to assist understanding of the present disclosure and the core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.

Claims (10)

1. The utility model provides a powder static spray gun of charged load module which characterized in that, includes spray tube and charged load module, the spray gun is provided with the diffusion dish, the diffusion dish is used for to radiation blowout powder coating all around, the diffusion dish is located the jet orifice department of spray tube, charged load module sets up on spray tube and diffusion dish, charged load module is used for making the powder coating who erupts have static.

2. The electrostatic powder spray gun of claim 1, wherein the charge loading module comprises an electrode ring including an electrode pin, the electrode pin being mounted on the electrode ring; the tail part of the electrode needle is connected with a conductive piece.

3. The electrostatic powder spray gun of claim 2, wherein the inner side of the electrode ring is fitted to the outer wall of the diffusion disk, and the diffusion disk and the electrode ring form a horn shape.

4. The electrostatic powder spray gun of claim 2, wherein the electrode ring is provided with an electrode needle through hole for mounting an electrode needle, and one end of the electrode needle is inserted into the electrode needle through hole.

5. The electrostatic powder spray gun of claim 4, wherein the plurality of electrode pin through holes are arranged along the circumference of the electrode ring.

6. The electrostatic powder spray gun of claim 4, wherein the diameter of the electrode needle through hole is larger than the diameter of the electrode needle.

7. The electrostatic powder spray gun with the charge loading module according to claim 2, wherein the charge loading module further comprises a high-voltage electrostatic generator and a sleeve, the outer side of the sleeve is provided with an insulating high-voltage electrostatic generator shell, the insulating high-voltage electrostatic generator shell is internally provided with the high-voltage electrostatic generator, and the sleeve is sleeved outside the spray pipe.

8. An electrostatic powder spray gun with a charge loading module according to claim 7, wherein the sleeve is provided with an electrode ring mount for mounting an electrode ring.

9. The electrostatic powder spray gun of claim 8, wherein a cavity is formed between the electrode ring and the electrode ring base, and the cavity is used for gas circulation.

10. Electrostatic powder spray gun according to claim 9, wherein the electrode ring base is provided with a gas pipe connection.

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