CN2156943Y

CN2156943Y - Fluidized powder self-suction type powder feeder for spray pistol

Info

Publication number: CN2156943Y
Application number: CN 93230854
Authority: CN
Inventors: 孙绍波
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-29
Filing date: 1993-04-29
Publication date: 1994-02-23
Anticipated expiration: 2003-04-29

Abstract

The utility model relates to a fluidized powder self-suction type powder feeder for spray pistol, which is composed of a spray gun tube, a nozzle 2, a throat 3, a power sucking tube 4, a powder storage tube 5, a fluidization plate 6, and a gun handle 7. The power sucking tube 4 is arranged on the spray gun tube and is positioned on the venturi tube position formed by the nozzle 2 and the throat 3. The upper part of the power sucking tube 4 is communicated with the venturi tube, and the lower part is inserted into the powder storage tube 5. The distance between a pipe end and the fluidization plate 6 of the powder storage tube 5 is from 2 to 10 mm, and the fluidization plate 6 is the rigid cellular material. During working, the nozzle 2 ejects high pressure air current and forms negative pressure on the area of the venturi tube. Under the effect of air pressure, outer air enters the powder storage tube 5 via the fluidization plate 6. powdery paint inside a tanker is fluidized, is absorbed into the venturi tube via the power sucking tube 4, and is ejected out from the throat 3. The utility model has the advantages of uniform powder supply, continuous powder supply, and stability.

Description

Fluidized powder self-suction type powder feeder for spray pistol

The utility model relates to a kind of powder feeder unit that is used for dust gun, particularly self-priming fluidized powder spray gun powder feeder unit.

The relevant sample data introduction of powder spray coating device manufacturing company according to developed countries such as present U.S. JENSEN company, German WAGNER company, Britain VOLSTIC company and Switzerland GEMA companies, powder feeder unit on its dust gun is establishes infundibulate storage powder cup above discharge tube, powdery paints is conducted to the spray gun ejection by the suction of self gravitation and Venturi tube.Poor because of the flowability of powdery paints, store powder cup bottom in addition and be back taper, usually cause powdery paints to take arch, unsettled, make for powder and be interrupted, cause for powder inhomogeneous.

The purpose of this utility model is to provide a kind of negative-pressure air-flow that produces for the powder Venturi tube that utilizes to cause flow of powder, sucks the self-priming fluidisation powder feeder unit of spray gun.

Self-priming fluidized powder spray gun powder feeder unit described in the utility model, as shown in Figure 1, mainly form by lance tube 1, nozzle 2, trunnion 3, powder absorbing pipe 4, storage powder jar 5, fluidisation plate 6 and the small of the stock 7, it is characterized in that powder absorbing pipe 4 is installed in the below at the Venturi tube position that is made of nozzle 2 and trunnion 3 on the lance tube 1, go up logical Venturi tube, storage powder jar 5 is inserted in the bottom, the spigot sealing, pipe end and the fluidisation plate 6 of storage powder jar 5 bottoms keep the distance of 2-10mm, and fluidisation plate 6 is made for the even gas permeable material of rigidity micropore.The aperture of nozzle 2 is less than the aperture of trunnion 3, and nozzle 2 and trunnion 3 all are installed in the endoporus of lance tube 1, and trunnion 3 is preceding, and nozzle 2 leans backward, and the 10mm of being separated by between the two forms a Wen area under control in lance tube, and powder absorbing pipe 4 just is installed in the below in this zone.Powder absorbing pipe 4 also can be one section flexible hose, and as shown in Figure 2, at this moment spray gun just can separate a segment distance one on the other with storage powder jar, and the length of flexible pipe depends on the size of the negative pressure value that produces in the Venturi tube, generally is not more than 2.5 meters.During work, when nozzle ejection air-flow, just produced negative pressure in the Venturi tube, reached storage powder jar 5, made its inside also be in negative pressure state through powder absorbing pipe 4, extraneous air is under the atmospheric pressure effect, micropore through fluidisation plate 6 evenly enters in the jar, makes the powdery paints diffusion disturbance on the fluidisation plate 6, forms fluidisation, powdery paints after the fluidisation is inhaled in the Venturi tube through powder absorbing pipe 4, sprays in trunnion 3.Because the powdery paints of fluidized state has good flowability, thereby fundamentally solved the problem of the mobile difference of powdery paints, eliminated unsettled, take doming effect, guaranteed for powder evenly, continuously, stable.

Description of drawings:

Fig. 1, self-priming fluidized powder spray gun powder feeder unit schematic diagram;

Fig. 2, the flexible self-priming fluidized powder spray gun powder feeder unit of inhaling the powder flexible pipe is installed.

Embodiment:

Make a dust gun powder feeder unit as shown in Figure 1, nozzle 2 usefulness brass are made, and the aperture is 1.6mm, and trunnion 3 usefulness polytetrafluoroethylene (PTFE) are made, and the aperture is 8mm, and lance tube 1 usefulness PVC-U is made.As shown in Figure 1, nozzle 1 and trunnion 3 are installed in the lance tube 1, making mounting distance between the two is 10mm.Storage powder jar 5 usefulness transparent organic glass are made, the microwell plate that fluidisation plate 6 sinters into for polyethylene powders, with one section polyvinyl chloride pipe as powder absorbing pipe 4, the one end inserts in the storage powder jar 5, the surperficial 6mm of pipe end identity distance fluidisation plate 6, the spigot sealing, the other end is connected on the downward installing hole that is in 10mm interval between nozzle 2 and the trunnion 3 on the lance tube 1.The lance tube 1 that assembles is installed on the small of the stock 7, promptly make a spray gun described in the utility model.Connect compressed air source again, get final product work.

Claims

1, a kind of self-priming fluidized powder spray gun powder feeder unit, mainly by lance tube 1, nozzle 2, trunnion 3, powder absorbing pipe 4, storage powder jar 5, fluidisation plate 6 is formed 7 with robbing, it is characterized in that powder absorbing pipe 4 is installed in the below at the Venturi tube position that is made of nozzle 2 and trunnion 3 on the lance tube 1, go up logical Venturi tube, storage powder jar 5 is inserted in the bottom, the spigot sealing, the fluidisation plate 6 of pipe end and storage powder jar 5 bottoms keeps the distance of 2-10mm, and fluidisation plate 6 is made for the even gas permeable material of rigidity micropore, the aperture of nozzle 2 is less than the aperture of trunnion 3, nozzle 2 and trunnion 3 all are installed in the endoporus of lance tube 1, trunnion 3 leans backward at preceding nozzle 2, the 10mm of being separated by between the two.