CN113600353A

CN113600353A - High-voltage non-node output electrostatic powder gun

Info

Publication number: CN113600353A
Application number: CN202111064711.1A
Authority: CN
Inventors: 黄建军; 万家跃
Original assignee: Gewei Coating Technology Zhongshan Co ltd
Current assignee: Gewei Coating Technology Zhongshan Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2021-11-05

Abstract

The invention discloses an electrostatic powder gun with high-voltage and non-node output, which comprises a gun shell and a powder tube arranged in the gun shell, and also comprises: the high-voltage electrostatic module is arranged in the gun shell, and the output end of the high-voltage electrostatic module is connected with an electrode needle through an insulated wire; the electrode needle seat is arranged at the front end of the gun shell and communicated with the powder tube, and the electrode needle is arranged on the electrode needle seat; the spray head assembly is sleeved outside the electrode needle base; the structure between the high-voltage electrostatic module and the electrode needle base is simplified, the caliber of the powder outlet pipe can be larger, the powder outlet quantity is increased, the energy consumption is reduced, the high voltage is converted into energy without loss, and the size can be adjusted and controlled really, so that the production benefit is improved, the fault is reduced, and the hidden danger is eliminated; in addition, the disordered discharge phenomenon between node point contacts is eliminated, so that the voltage of the electrostatic field is more stable, the powder is more sufficiently ionized, the powdering is more uniform, the quality is better, the production efficiency is higher, and the service life is longer.

Description

High-voltage non-node output electrostatic powder gun

Technical Field

The invention relates to the technical field of electrostatic powder spraying, in particular to an electrostatic powder spraying gun with high-voltage and node-free output.

Background

The electrostatic powder spray gun is a spraying tool for coating surface, and is mainly used for coating metal surface. The working principle of the electrostatic powder gun is as follows: under the blowing and jetting of auxiliary air flow, the powder coating particles are sprayed out from the nozzle of the gun head in an atomized state, an electrode needle capable of releasing high-voltage static electricity is arranged at the center of the nozzle, the electrode needle can radiate an electrostatic field, when the atomized powder coating particles pass through the high-voltage electrostatic field, the powder can be charged to carry electrostatic charges, and finally the powder coating particles are adsorbed on the surface of a sprayed workpiece with opposite electrostatic charges.

However, the existing electrostatic powder spraying gun has the following problems in the using process: 1. the electrostatic field of the present powder gun is composed of a static output system by multi-node point contact, so that the phenomena of poor contact and partial discharge exist among contact points of the spray gun in shaking (movement of hands, mechanical arms, reciprocating machines and the like) for a long time, the discharge amount is different along with the contact tightness among the contact points, in addition, the aging oxidation and abrasion of the contact points are added, and meanwhile, the premature aging of a spray gun shell and a spray gun sleeve is caused because the bottom of an electrode needle is in metal point contact for long time discharge, and the shell is easy to be punctured to cause electric leakage. Therefore, different losses exist in the discharge voltage, so that the discharge voltage is unstable, the electrostatic electric field is unstable, the ionization degree of the powder is greatly influenced, the stability and uniformity of the powdering are influenced, and the influence on the production efficiency and the yield of finished products is particularly obvious. 2. Based on all electrostatic powder guns all provide signal to high-voltage module by the controller, produce the electric field by high-voltage module output, constitute by a plurality of nodes in electrostatic output circuit, consequently the structure between high-voltage module and electrode needle file is fairly complicated, and each node collects here for the bore of powder route system can not increase, thereby the powder volume can not increase, and the powder outlet of electrode needle file is too little, thereby the powder is the form of spouting at the powder outlet, obviously influences the atomization effect of powder.

Therefore, it is necessary to provide an electrostatic powder gun with high voltage and node-free output to solve the above technical difficulties.

Disclosure of Invention

The present invention is directed to provide an electrostatic powder gun with high voltage and node-less output, which solves one or more of the problems of the related art.

In order to achieve the purpose, the invention adopts the following scheme: the utility model provides an electrostatic powder spray gun of high pressure no node output, is including the rifle casing and locate the powder pipe in the rifle casing, still including:

the high-voltage electrostatic module is arranged in the gun shell, the output end of the high-voltage electrostatic module is connected with an electrode needle through an insulated wire, and an insulated rubber tube is wrapped outside the fixed end of the electrode needle;

the electrode needle seat is arranged at the front end of the gun shell and communicated with the powder tube, and the electrode needle is arranged on the electrode needle seat;

and the spray head assembly is sleeved outside the electrode needle base.

Further, the powder tube is integrally molded.

Further, the powder pipe is made of Teflon materials.

Further, the shower nozzle subassembly is including nozzle and fixed sleeve, the electrode needle file is nonrotatably inserted and is established the front end of rifle casing, the rotatable and detachable cover of nozzle is established on the electrode needle file, fixed sleeve cover establish on the nozzle and with rifle casing front end threaded connection.

Furthermore, a sealing ring is arranged between the electrode needle seat and the front end opening of the gun shell.

Furthermore, an electrode needle guide column is arranged at the front end of the electrode needle seat, a through hole communicated with the electrode needle guide column is formed in the rear end of the electrode needle seat, the electrode needle is arranged in the electrode needle guide column, and the insulated conducting wire penetrates through the through hole to be connected with the electrode needle and the output end of the high-voltage electrostatic module respectively.

Furthermore, the high-voltage electrostatic module comprises an insulating shell and a high-voltage module assembly arranged in the insulating shell, and the high-voltage module assembly is fixed in the insulating shell through insulating sealant.

Further, the gun housing includes a gun body and a handle portion, and the powder tube is disposed in the gun body and the handle portion.

Further, a control trigger is provided at the front end of the handle portion.

Furthermore, the rear end of the gun body is of an opening structure, a rear cover is covered on the opening structure, and a hook is arranged on the rear cover.

In summary, the beneficial effects of the invention are as follows: the structure formed by multiple node point contacts of a traditional electrostatic output system is abandoned, the high-voltage electrostatic module and the electrode needle are made into a whole through an insulated conducting wire, all middle nodes are eliminated, the electrode needle penetrates through the front part of the gun shell and is arranged on the electrode needle seat, and an electrostatic electric field is formed at the front end of the spray head component, so that the structure between the high-voltage electrostatic module and the electrode needle seat is simplified, the caliber of the powder outlet pipe can be larger, the powder outlet quantity is increased, the energy consumption is reduced, the high voltage is not lost and is converted into energy, the large adjustable small controllable high voltage is really achieved, the atomization capacity is improved, the production benefit is improved, the faults are reduced, and the hidden danger is eliminated; in addition, the disordered discharge phenomenon between node point contacts is eliminated, so that the voltage of the electrostatic field is more stable, the powder is more sufficiently ionized, the powdering is more uniform, the quality is better, the production efficiency is higher, and the service life is longer.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is a partially cross-sectional exploded view of the present invention.

FIG. 4 is an enlarged view of the position A of FIG. 2 according to the present invention.

Description of reference numerals: 1. a gun housing; 2. a powder tube; 3. a high voltage electrostatic module; 4. an insulated wire; 5. an electrode needle; 6. an electrode needle holder; 7. a showerhead assembly; 8. an insulating rubber tube; 41. a nozzle; 42. fixing the sleeve; 51. a seal ring; 52. an electrode needle guide post; 53. a through hole; 61. an insulating case; 62. a high voltage module assembly; 71. a gun body portion; 72. a handle portion; 81. controlling a trigger; 91. a rear cover; 92. and (4) hanging hooks.

Detailed Description

The following detailed description provides many different embodiments or examples for implementing the invention. Of course, these are merely embodiments or examples and are not intended to be limiting. In addition, repeated reference numbers, such as repeated numbers and/or letters, may be used in various embodiments. These iterations are for simplicity and clarity of describing the present invention and are not intended to represent a particular relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms, such as "below" … "," below "," inside-out "," above "," upper "and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature during use or operation of the device, and may include different orientations of the device during use or operation of the device as illustrated in the figures. The devices may be rotated 90 degrees or other orientations from different orientations and the spatially relative descriptors used therein should be interpreted as such and are not to be construed as limiting the invention, and the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The invention is further described in the following figures and detailed description: as shown in fig. 1 to 4, the high-voltage electrostatic powder gun with no node output includes a gun housing 1 and a powder tube 2 disposed in the gun housing 1, and further includes:

the high-voltage electrostatic module 3 is arranged in the gun shell 1, the output end of the high-voltage electrostatic module 3 is connected with an electrode needle 5 through an insulated wire 4 to form a whole, and an insulated rubber tube 8 is wrapped outside the fixed end of the electrode needle 5; make a whole with high-voltage electrostatic module 3 and electrode needle 5 through insulated wire 4, eliminated all intermediate node, specifically, high-voltage electrostatic module 3 is including insulating casing 61 and the high-voltage module subassembly 62 of setting in insulating casing 61, high-voltage module subassembly 62 seals through insulating the encapsulation in insulating casing 61, and the sealed output that seals with high-voltage module subassembly 62 through insulating casing 61, insulating is sealed is isolated with ambient air and is come, can avoid high-voltage module subassembly 62 at the during operation because the output air communicates with each other with the outer air of insulating casing 61, and produces the high-voltage discharge phenomenon.

The electrode needle seat 6 is arranged at the front end of the gun shell 1 and communicated with the powder tube 2, and the electrode needle 5 is arranged on the electrode needle seat 6; specifically, an electrode needle guide column 52 is arranged at the front end of the electrode needle seat 6, a through hole 53 communicated with the electrode needle guide column 52 is arranged at the rear end of the electrode needle seat 6, the electrode needle 5 is arranged in the electrode needle guide column 52, and the insulated conducting wire 4 penetrates through the through hole 53 and is respectively connected with the electrode needle 5 and the output end of the high-voltage electrostatic module 3; thereby simplifying the structure between the high-voltage electrostatic module 3 and the electrode needle seat 6, enabling the caliber of the powder outlet tube to become larger, increasing the powder outlet quantity, reducing the energy consumption, leading the high voltage to be converted into energy without loss, really realizing the adjustability and controllability of the size, improving the atomization capability, further improving the production efficiency, further improving the production benefit, reducing the faults and eliminating hidden dangers; in addition, the disordered discharge phenomenon between node point contacts is eliminated, so that the voltage of the electrostatic field is more stable, the powder is more sufficiently ionized, the powdering is more uniform, the quality is better, the production efficiency is higher, and the service life is longer.

The spray head component 7 is sleeved outside the electrode needle seat 6; specifically, the spray head assembly 7 comprises a spray nozzle 41 and a fixed sleeve 42, the electrode needle holder 6 is non-rotatably inserted into the front end of the gun housing 1, the nozzle 41 is rotatably and detachably sleeved on the electrode needle base 6, the fixed sleeve 42 is sleeved on the nozzle 41 and is in threaded connection with the front end of the gun shell 1, a sealing ring 51 is arranged between the electrode needle seat 6 and the front end opening of the gun shell 1, when in installation, the sealing ring 51 is sleeved on the electrode needle seat 6, then the electrode needle holder is abutted against the front end of the gun shell 1, the nozzle 41 is sleeved on the electrode needle holder 6, then the fixed sleeve 42 is sleeved on the nozzle 41 and abutted against the nozzle 41 to be in threaded connection with the gun shell 1, thereby realize realizing nozzle 41 and electrode needle file 6 fixed mounting, nozzle 41 can be at will rotatory angle regulation simultaneously for the powder is more even, the quality is more excellent, production efficiency is higher and life is longer.

In order to improve the stability of powder, powder pipe 2 is the integrated into one piece, powder pipe 2 is the teflon material, has at first avoided the multistage concatenation between powder pipe 2 to powder pipe 2 is excessive with big radian, reduces and supplies powder pressure, and because powder pipe 2 adopts the teflon material, the non-adhesiveness of teflon material and gliding nature are good, makes the powder accessible flow in pipe-line system, eliminates the powder and stays the phenomenon.

In order to facilitate the installation of internal parts and the influence of mold stripping, the gun housing 1 includes a gun body 71 and a handle 72, the powder tube 2 is disposed in the gun body 71 and the handle 72, and a control trigger 81 is disposed at the front end of the handle 72, and the principle of a control system in the gun housing 1 is the same as that in the prior art, and is not repeated here.

The rear end of the gun body 71 is of an open structure, and the rear cover 91 is arranged on the open structure, so that the gun body 71, the handle part 72 and the rear cover 91 are independently molded and mounted, the mounting of internal parts is facilitated, and the assembly efficiency is improved.

Be equipped with couple 92 on the back lid 91, couple 92 is through moulding plastics and lid 91 integrated into one piece, and the accessible couple 92 is fixed with the rifle body and is placed, improves its practicality.

While there have been shown and described the fundamental principles and principal features of the invention and advantages thereof with reference to the drawings, it will be understood by those skilled in the art that the invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an electrostatic powder spray gun of high pressure no node output, is including rifle casing (1) and locate powder pipe (2) in rifle casing (1), its characterized in that still including:

the high-voltage electrostatic module (3) is arranged in the gun shell (1), the output end of the high-voltage electrostatic module (3) is connected with an electrode needle (5) through an insulated wire (4) to form a whole, and an insulated rubber tube (8) is wrapped outside the fixed end of the electrode needle (5);

the electrode needle seat (6) is arranged at the front end of the gun shell (1) and communicated with the powder tube (2), and the electrode needle (5) is arranged on the electrode needle seat (6);

and the spray head component (7) is sleeved outside the electrode needle base (6).

2. A high voltage nodeless output electrostatic powder gun according to claim 1, characterized in that: the powder tube (2) is integrally formed.

3. A high voltage nodeless output electrostatic powder gun according to claim 1 or 2, characterized in that: the powder tube (2) is made of Teflon material.

4. A high voltage nodeless output electrostatic powder gun according to claim 1, characterized in that: shower nozzle subassembly (7) are including nozzle (41) and fixed sleeve (42), electrode needle file (6) are nonrotatably inserted and are established the front end in rifle casing (1), rotatable and detachable cover of nozzle (41) is established on electrode needle file (6), fixed sleeve (42) cover establish on nozzle (41) and with rifle casing (1) front end threaded connection.

5. The high-voltage nodeless output electrostatic powder gun according to claim 4, characterized in that: a sealing ring (51) is arranged between the electrode needle seat (6) and the front end opening of the gun shell (1).

6. A high voltage nodeless output electrostatic powder gun according to claim 1, characterized in that: electrode needle file (6) front end is equipped with electrode needle guide post (52) the rear end of electrode needle file (6) is equipped with through-hole (53) with electrode needle guide post (52) intercommunication, electrode needle (5) set up in electrode needle guide post (52), insulated wire (4) pass through-hole (53) and are connected with electrode needle (5), high-voltage electrostatic module (3) output respectively.

7. A high voltage nodeless output electrostatic powder gun according to claim 1, characterized in that: the high-voltage electrostatic module (3) comprises an insulating shell (61) and a high-voltage module component (62) arranged in the insulating shell (61), and the high-voltage module component (62) is encapsulated in the insulating shell (61) through insulating sealant.

8. A high voltage nodeless output electrostatic powder gun according to claim 1, characterized in that: the gun shell (1) comprises a gun body (71) and a handle (72), and the powder tube (2) is arranged in the gun body (71) and the handle (72).

9. A high voltage nodeless output electrostatic powder gun according to claim 8, characterized in that: a control trigger (81) is provided at the front end of the handle portion (72).

10. A high voltage nodeless output electrostatic powder gun according to claim 8, characterized in that: the rear end of the gun body part (71) is of an opening structure, a rear cover (91) is covered on the opening structure, and a hook (92) is arranged on the rear cover (91).