CN2328430Y

CN2328430Y - Static power spray gun

Info

Publication number: CN2328430Y
Application number: CN 97234727
Authority: CN
Inventors: 陈平; 杨永青; 朱剑青
Original assignee: ELECTROSTATIC EQUIPMENT FACTORY TAICANG CITY
Current assignee: ELECTROSTATIC EQUIPMENT FACTORY TAICANG CITY
Priority date: 1997-06-03
Filing date: 1997-06-03
Publication date: 1999-07-14
Anticipated expiration: 2007-06-03

Abstract

The utility model relates to a static power spray gun, comprising a sprayer barrel (11), an air and powder mixing pipe (23) arranged in the inner chamber of the sprayer barrel (11), an electricity discharging needle sleeve (4) and an electricity discharging needle (19) arranged on the front part of the sprayer barrel (11) and a powder retaining ring (2) arranged on the front end of the electricity discharging needle sleeve (4). The utility model is characterized in that an air compressing pipe (22) is arranged in the inner chamber of the sprayer barrel (11); the air compressing pipe (22) is communicated with the inner chamber of the electricity discharging needle sleeve (4). The utility model can evenly spraying powder on the surfaces of workpieces, and the powder is solidified after baked to effectively prevent the powder from accumulating on the front end of the powder retaining ring.

Description

The electrostatic dusting rifle

The utility model relates to a kind of electrostatic spraying device.

In the prior art, the electrostatic dusting rifle is to add high-tension electricity at gun slot, when the powder that mixes with high pressure draught passes through gun slot, negative electrical charge on the induction band flies to workpiece then, and workpiece grounding is anodal, powder is under the effect that the positive negative of static is inhaled, be adsorbed on surface of the work equably,, just dissolve curing (or plasticizing) and become coating through the heating of baking oven uniform temperature.Present podwer gun mainly comprises gun barrel, be arranged at mixed powder tracheae in the gun barrel inner chamber, be arranged at gun barrel the place ahead discharging needle guard, be electrically connected and be arranged at spray point in the discharging needle guard inner chamber with the voltage output end of high pressure generator, be enclosed within outside the described discharging needle guard and the nozzle that is connected with the mixed powder tracheae, the outer surface that is arranged at the discharging needle guard front end are trumpet-shaped powder retaining ring.Because the outside air velocity height of powder retaining ring, so the easy accumulated powder of inboard front end of powder retaining ring can be gone out by air-flow when accumulated powder is accumulated to certain thickness and fly to surface of the work, produce the uneven layer that dusts at surface of the work; Accumulated powder has also influenced the corona of spray point in addition, and can not make dusts fully is with negative electrical charge.

The purpose of this utility model is to provide a kind of electrostatic dusting rifle that can eliminate powder retaining ring front end accumulated powder.

The technical solution of the utility model is: it comprises gun barrel, be arranged at mixed powder tracheae in the gun barrel inner chamber, be arranged at gun barrel the place ahead discharging needle guard, be electrically connected and be arranged at spray point in the discharging needle guard inner chamber with the voltage output end of high pressure generator, be enclosed within outside the described discharging needle guard and the nozzle that is connected with the mixed powder tracheae, the outer surface that is arranged at the discharging needle guard front end are trumpet-shaped powder retaining ring; Also be provided with an air compressed pipe in the described gun barrel inner chamber, the intracavity inter-connection of this air compressed pipe and discharging needle guard, the front end of described discharging needle guard has the gas outlet.

The utility model compared with prior art has following advantage:

(1). in the process of dusting, the compressed air stream in the air compressed pipe can be constantly blows away the accumulated powder of powder retaining ring front end, has fundamentally eliminated the accumulated powder phenomenon.

(2). after eliminating accumulated powder, can increase spray point corona scope on every side, make powder be vaporific and fully open, overcome the electrostatic screen effect of coated edge, make this place also can coat powder.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is structure master's cutaway view of the present utility model;

Accompanying drawing 2 is the A-A direction cutaway view of accompanying drawing 1; Wherein:

[1]. spray point is stifled; [2]. powder retaining ring; [3]. current-limiting resistance; [4]. discharging needle guard; [5]. nozzle; [6]. nozzle cage; [7]. gas separating piece; [8]. joint; [9]. high pressure generator; [10]. shelve bar; [11]. gun barrel; [12]. fixed bolster; [13]. gun stock; [14]. pikestaff; [15]. gunman's handle; [16]. connection sheet; [17]. switch base; [18]. by strong; [19]. spray point; [20]. insulation sleeve; [21]. switch; [22]. compressed air hose; [23]. the mixed powder tracheae; [24]. supply socket;

Embodiment: referring to accompanying drawing, the utility model comprises gun barrel [11], be arranged at mixed powder tracheae [23] in gun barrel [11] inner chamber, be arranged at gun barrel [11] the place ahead discharging needle guard [4], be electrically connected and be arranged at spray point [19] in discharging needle guard [4] inner chamber with the voltage output end of high pressure generator [9], be enclosed within outside the described discharging needle guard [4] and the nozzle [5] that is connected with mixed powder tracheae [23], the outer surface that is arranged at discharging needle guard [4] front end are trumpet-shaped powder retaining ring [2]; Also be provided with an air compressed pipe [22] in described gun barrel [11] inner chamber, the intracavity inter-connection of this air compressed pipe [22] and discharging needle guard [4], the front end of described discharging needle guard [4] has the gas outlet.Be provided with spray point stifled [1] in the front end inner chamber of described discharging needle guard [4], the central authorities of this spray point stifled [1] have greater than spray point [19] diameter and the venthole that is connected with air compressed pipe [22], described spray point [19] passes this venthole, and the compressed air in the air compressed pipe [22] can be sprayed from the venthole of described spray point stifled [1] central authorities.Be formed with venthole between the exocoel surface of the surface of internal cavity of described discharging needle guard [4] and spray point stifled [1], between the exocoel surface that the compressed air in the air compressed pipe [22] can also block up [1] from the surface of internal cavity and the spray point of described discharging needle guard [4] the venthole ejection arranged.

Claims

1. electrostatic dusting rifle, comprise gun barrel [11], be arranged at mixed powder tracheae [23] in gun barrel [11] inner chamber, be arranged at gun barrel [11] the place ahead discharging needle guard [4], be electrically connected and be arranged at spray point [19] in discharging needle guard [4] inner chamber with the voltage output end of high pressure generator [9], be enclosed within outside the described discharging needle guard [4] and the nozzle [5] that is connected with mixed powder tracheae [23], the outer surface that is arranged at discharging needle guard [4] front end are trumpet-shaped powder retaining ring [2]; It is characterized in that: also be provided with an air compressed pipe [22] in described gun barrel [11] inner chamber, the intracavity inter-connection of this air compressed pipe [22] and discharging needle guard [4], the front end of described discharging needle guard [4] has the gas outlet.

2. electrostatic dusting rifle according to claim 1, it is characterized in that: be provided with spray point stifled [1] in the front end inner chamber of described discharging needle guard [4], the central authorities of this spray point stifled [1] have greater than spray point diameter and the venthole that is connected with air compressed pipe [22], and described spray point [19] passes this venthole.

3. electrostatic dusting rifle according to claim 2 is characterized in that: be formed with venthole between the exocoel surface of the surface of internal cavity of described discharging needle guard [4] and spray point stifled [1].