CN211587114U

CN211587114U - Nozzle applied to paint spray gun

Info

Publication number: CN211587114U
Application number: CN201922298126.2U
Authority: CN
Inventors: 黄立群
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-29
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a nozzle applied to a paint spraying gun, which relates to the technical field of spray guns, and comprises a pipe body and a guide cylinder, wherein the side wall of the pipe body is provided with a first annular flange, the upper end surface of the first annular flange is provided with an annular groove surrounding the pipe body, and the annular groove is provided with a plurality of air holes leading to the lower end of the first annular flange in an annular distribution manner; the guide cylinder is sleeved on the pipe body and positioned in the annular groove, the projection of the upper end of the outer side wall of the guide cylinder is positioned outside the ring of the air holes, and the lower end of the outer side wall of the guide cylinder is positioned inside the ring of the air holes. A plurality of gas pockets are used for connecting the air flue of the rifle body and the plane hole of spouting the cap, and the air current through the draft tube to the gas pocket carries out the drainage, and less air current lets the stranded air current assemble in the annular groove and fuses to reduce from spouting the bad phenomena such as the centre bore spraying material production overlap, deckle edge of cap, let the spray amplitude that makes coating more stable, concentrate and even.

Description

Nozzle applied to paint spray gun

Technical Field

The utility model relates to a spray gun technical field, concretely relates to be applied to spray gun's nozzle.

Background

A paint spray gun is a pneumatic tool for spraying paint. In order to control the swath size of the coating, improvements are often made in the air passages in the spray guns. The air flow of the paint spray gun is divided into two paths by the air passage of the gun body, one path is discharged from the central hole and the plane hole of the spray head through 12 phi 1.5mm air holes on the front surface of the spray nozzle, and the other path is discharged from the two claw holes of the spray head through the gap between the baffle ring of the spray nozzle and the gun body. Wherein phi 1.5mm pores mainly have the function of controlling spray burrs and burrs, so phi 1.5mm pore distribution directly influences spray burrs; the air flow passes through the spray horn hole from the gap between the baffle ring and the gun body, and then has the function of atomizing paint, which directly influences the atomized particles, and the size of the gap influences the size of the atomized air flow. However, the airflow of the existing nozzle can be changed due to the uneven distribution of the hole positions, the problems of uneven spraying, poor atomization effect and the like exist, the existing nozzle and the baffle ring belong to a split structure, the existing nozzle and the baffle ring are easily eccentric, and the size of the atomized airflow is affected by the size of the gap.

Disclosure of Invention

Therefore, to the above-mentioned problem, the utility model provides a be applied to spray gun's nozzle, aim at solves the above-mentioned problem that current nozzle exists.

The utility model adopts the technical scheme as follows:

a nozzle applied to a paint spray gun comprises a pipe body, wherein a first annular flange is arranged on the side wall of the pipe body, an annular groove surrounding the pipe body is arranged on the upper end face of the first annular flange, and a plurality of air holes leading to the lower end of the first annular flange are annularly distributed in the annular groove; the guide cylinder is sleeved on the pipe body and located inside the annular groove, the projection of the upper end of the outer side wall of the guide cylinder is located on the outer side of the ring of the air holes, and the lower end of the outer side wall of the guide cylinder is located on the inner side of the ring of the air holes.

Further, the cross section profile of the outer side wall of the guide cylinder is in a step shape.

Furthermore, the cross section profile of the inner side wall of the annular groove is in a step shape, and the annular groove is contracted from top to bottom.

Further, the number of the first air holes is 12.

Further, the lateral wall of first annular flange is from last to being equipped with first annular concave part, outer hexagon nut, second annular flange and second annular concave part down in proper order.

Furthermore, the upper end of the pipe body is provided with a contractive nozzle head, and the lower end of the pipe body is provided with an external thread section used for being connected with a paint spraying gun; the lateral wall of body still is equipped with third annular flange between first annular flange and external screw thread section.

Compared with the prior art, the utility model has the advantages of:

the utility model comprises a pipe body and a guide cylinder, wherein the side wall of the pipe body is provided with a first annular flange, the upper end surface of the first annular flange is provided with an annular groove, and the annular groove is provided with a plurality of air holes leading to the lower end of the first annular flange; the guide cylinder is sleeved on the pipe body and positioned in the annular groove, the projection of the upper end of the outer side wall of the guide cylinder is positioned outside the ring of the air holes, and the lower end of the outer side wall of the guide cylinder is positioned inside the ring of the air holes. A plurality of gas pockets are used for connecting the air flue of the rifle body and the plane hole of spouting the cap, and the air current through the draft tube to the gas pocket carries out the drainage, and less air current lets the stranded air current assemble in the annular groove and fuses to reduce from spouting the bad phenomena such as the centre bore spraying material production overlap, deckle edge of cap, let the spray amplitude that makes coating more stable, concentrate and even.

Secondly, the utility model discloses in, the lateral wall cross section profile of draft tube is the echelonment to make the draft tube from last to being the shrink form down. The cross section profile of the inner side wall of the annular groove is in a step shape, and the annular groove is in a contraction shape from top to bottom. This kind of annular groove and draft tube big-end-up can be given a comparatively mild adjustment process of the air current that spouts the cap through the gas pocket, further avoids the air current to produce great impact when spouting the cap from the gas pocket row, and then leads to spouting cap operation and discover unstability scheduling problem.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Fig. 2 is another angle structure diagram of the tube body of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is a cross-sectional view of the present invention.

Fig. 5 is a schematic view of the present invention assembled with a paint spray gun.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.

Referring to fig. 1 to 5, a nozzle for a paint spray gun includes a tube body 1 and a guide tube 5, the upper end of the tube body 1 is provided with a nozzle head 2 in a contracted shape, and the lower end is provided with an external thread section 3 for connection with the paint spray gun. The lateral wall of body 1 is equipped with first annular flange 4 and third annular flange 5 from last to down in proper order along its axial direction. Wherein, the side wall of the first annular flange 4 is provided with a first annular recess 41, an outer hexagon nut 42, a second annular flange 43 and a second annular recess 44 from top to bottom in sequence, and the upper end surface of the first annular flange 4 is further provided with an annular groove 40 surrounding the pipe body 1, and the annular groove 40 is provided with 12 air holes 400 which lead to the lower end of the first annular flange 4 in an annular distribution manner. Of course, the number of the air holes 400 is not limited thereto, and may be increased or decreased as needed.

Referring to fig. 1 to 5, the guide cylinder 5 is sleeved on the pipe body 1 and located inside the annular groove 40. The upper end projection of the outer side wall of the guide shell 5 is positioned outside the ring rings of the air holes 400, and the lower end of the outer side wall of the guide shell 5 is positioned inside the ring rings of the air holes 400. Specifically, the guide cylinder 5 may be fixedly sleeved on the pipe body 1 only by a plane friction force, or may be screwed on the pipe body 1 in a threaded connection manner (not shown in the drawings).

Referring to fig. 1 to 5, the cross-sectional profile of the outer side wall of the guide shell 5 is preferably stepped. The inner side wall cross-sectional profile of the annular groove 40 is stepped and the annular groove 40 is tapered from top to bottom.

Referring to fig. 1 to 5, the nozzle 100, the pressing cover a2, the nozzle cap a3 and other parts disclosed in the present invention are mounted on the spray gun a1 in the manner of fig. 5, the air flow is divided into two paths by the air passage of the spray gun a1 through the nozzle 100, one path is ejected from the plane hole a31 of the nozzle cap a3 through the air hole 40, and the other path is ejected from the claw hole a32 of the nozzle cap a3 through the fine annular gap 200 formed between the second annular flange 43 and the gun body. The air flow of the air hole 400 is guided by the guide cylinder 5, the direct impact of the small air flow on the spray cap is reduced, the multiple air flows are converged and fused in the annular groove,

while the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a be applied to spray gun's nozzle, includes the body, its characterized in that: the side wall of the pipe body is provided with a first annular flange, the upper end surface of the first annular flange is provided with an annular groove surrounding the pipe body, and the annular groove is annularly provided with a plurality of air holes leading to the lower end of the first annular flange; the guide cylinder is sleeved on the pipe body and located inside the annular groove, the projection of the upper end of the outer side wall of the guide cylinder is located on the outer side of the ring of the air holes, and the lower end of the outer side wall of the guide cylinder is located on the inner side of the ring of the air holes.

2. A nozzle as claimed in claim 1, applied to a spray gun, wherein: the cross section profile of the outer side wall of the guide cylinder is in a step shape, and the guide cylinder is in a contraction shape from top to bottom.

3. A nozzle as claimed in claim 1 or 2, applied to a paint spray gun, wherein: the cross section profile of the inner side wall of the annular groove is in a step shape.

4. A nozzle as claimed in claim 1, applied to a spray gun, wherein: the number of the air holes is 12.

5. A nozzle as claimed in claim 1, applied to a spray gun, wherein: the lateral wall of first annular flange is from last to being equipped with first annular concave part, outer hexagon nut, second annular flange and second annular concave part down in proper order.

6. A nozzle as claimed in claim 1, applied to a spray gun, wherein: the upper end of the pipe body is provided with a contractive nozzle head, and the lower end of the pipe body is provided with an external thread section used for being connected with a paint spraying gun; the lateral wall of body still is equipped with third annular flange between first annular flange and external screw thread section.