CN2401277Y

CN2401277Y - Improved venturi tube of power-suction pump for electrostatic gunjet

Info

Publication number: CN2401277Y
Application number: CN 99241019
Authority: CN
Inventors: 邱碧娃
Original assignee: DONGGUAN ZHENGHUA MACHINERY MF
Current assignee: DONGGUAN ZHENGHUA MACHINERY MF
Priority date: 1999-12-14
Filing date: 1999-12-14
Publication date: 2000-10-18
Anticipated expiration: 2009-12-14

Abstract

The utility model relates to an improved venturi tube of a power-suction pump for an electrostatic gunjet, which relates to a venturi tube of power-suction pump for an electrostatic gunjet for spraying metallic power paint. At least one O-shaped ring is inlaid on the outer margins of the inlaying section of the verturi tube. A plurality of punch holes are annularly arranged on one end margin of the inlaying section. A dummy club is arranged on the other end margin of the inlaying section. The utility model has the advantages of simple production, simple manufacture, easy and rapid operation, long service life, etc.

Description

Improved electrostatic gun powder adsorption pump Venturi tube

The utility model relates to the powder adsorption pump Venturi tube that the electrostatic gun of a kind of metallisation lacquer is used.

Venturi tube on the powder adsorption pump is one of indispensable part on the electrostatic gun, yet the Venturi tube that uses can be divided into two kinds according to the suction powder amount of powder adsorption pump now, a kind of is the Venturi tube that big powder amount is used, be to be combined by two parts, the processing cost height is manufactured the flow process complexity; Another kind of Venturi tube for the use of starch amount, the one end is connected with powder adsorption pump by screw thread, after permanent the use, has the seepage phenomenon to produce in the threaded connection place, has to often change Venturi tube or powder adsorption pump body, causes bigger economic loss.

The powder adsorption pump Venturi tube that provides a kind of improved electrostatic gun to use is provided the purpose of this utility model.

The utility model is achieved by the following technical solution: chimeric section outer rim of Venturi tube is embedded with at least one O type ring, and its ora terminalis of chimeric section is equipped with a plurality of perforation, and the other end is provided with a boss.

The utlity model has and manufacture simple, easy and simple to handle advantage such as fast, and can increase the service life, have good result of use.

Below in conjunction with accompanying drawing the body utility model is further specified:

Accompanying drawing 1 is the utility model perspective exploded view

Accompanying drawing 2 is the utility model section principle schematic

Accompanying drawing 3 is another embodiment perspective exploded view of the utility model

Accompanying drawing 4 is another embodiment section principle schematic of the utility model

See accompanying

drawing

1,2, the utility model comprises body 1, powder joint 2, pneumatic fitting 3,4, Venturi tube 5.Powder joint 2 and pneumatic fitting 3 are connected to the both sides of body 1, pneumatic fitting 4 and Venturi tube 5 are connected to the upper and lower end of body 1, Venturi tube 5 stage casing outer rim appropriate locations are provided with chimeric section 51 of chimeric two O type rings 511, and the intersection at the straight length of this chimeric section 51 end and Venturi tube 5 is provided with a plurality of perforation 512, and being provided with bulge loop 53 outside at an end of chimeric section 51, a side of outer bulge loop 53 is stair-stepping snap joint 52.

When big powder amount is used, pneumatic fitting 4 by

body

1,3 places flow into air, and inject the powder of the usefulness of spraying paint by the powder joint 2 of its lower end, wherein, the air that right-hand member injected of body 1 is in Venturi tube 5 internal flows, make a plurality of perforation 512 porch form vacuum state, and nationality forms a high pressure conditions by the air that body 1 upper end passage 113 is injected in this confined space 115, and the powder that enters in this confined space 115 from this body 1 lower end is inhaled in perforation 512 in a large number because of pressure differential, again with Venturi tube 5 in air mix the use when spraying paint in a large number for the user.

See accompanying drawing 3,4, the powder joint 2 that body 1 lower end is provided with, directly communicate with an end of body 1 inner flow passage 11, a groove 54 is established in appropriate location, stage casing 5 chimeric sections 51 of Venturi tubes, and the side ring at this groove 54 is provided with a plurality of perforation 512, body 1 upper end air admission passage 113 is communicated with groove 54 and respectively is embedded an O type ring 511 in the appropriate location, both sides of this groove 54, and an end of chimeric section 51 has a flange 53, and a side of flange 53 is a stepped snap joint 52.

When the starch amount is used, one end and the upper end passage 113 of body 1 runner 11 inject air respectively, and inject the powder of the usefulness of spraying paint in body 1 lower end powder joint 2, and the air that this body 1 right-hand member injects at first with the powder that enters from the lower end, and by the runner 11 of body 1 along Venturi tube 5 internal flows, and the groove 54 from body 1 upper end leaked-in air in Venturi tube 5 forms atomizing, it is injected after Venturi tube 5 inside, can be again with powder once, and the mixture that this integral body is sprayed is careful and careful, and the use of spraying paint of starch amount is carried out in available hometown.

Claims

1. improved electrostatic gun powder adsorption pump Venturi tube, comprise body (1), powder joint (2), pneumatic fitting (3), (4) and Venturi tube (5), powder joint (2) is connected to body (1) both sides with pneumatic fitting (3), pneumatic fitting (4) and Venturi tube (5) be connected to body (1) on, the lower end, it is characterized in that: Venturi tube (5) stage casing outer rim appropriate location is provided with chimeric section (51) of chimeric two O type rings (511), and the intersection at the straight length of the end of these chimeric section (51) and Venturi tube is provided with a plurality of perforation (512), bulge loop (53) outside an end of chimeric section (51) is provided with.

2. improved electrostatic gun powder adsorption pump Venturi tube according to claim 1, it is characterized in that: establish a groove (54) in the appropriate location, stage casing of Venturi tube (5) chimeric section (51), and the side ring at this groove (54) is provided with a plurality of perforation (512), and respectively being embedded an O type ring (511) in the appropriate location, both sides of this groove (54), an end of chimeric section (51) has a flange (53).

3. improved electrostatic gun powder adsorption pump Venturi tube according to claim 1 is characterized in that: a side of flange (53) is a stepped snap joint (52).