CN111167625A - Nozzle on spray gun - Google Patents
Nozzle on spray gun Download PDFInfo
- Publication number
- CN111167625A CN111167625A CN202010178093.2A CN202010178093A CN111167625A CN 111167625 A CN111167625 A CN 111167625A CN 202010178093 A CN202010178093 A CN 202010178093A CN 111167625 A CN111167625 A CN 111167625A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- liquid outlet
- circumferential surface
- spray gun
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 239000003973 paint Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000009688 liquid atomisation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
Abstract
The invention discloses a nozzle on a spray gun, which comprises a nozzle body, wherein a liquid outlet channel and a liquid outlet hole are arranged in the nozzle body, the liquid outlet channel is communicated with the liquid outlet hole, the front end of the liquid outlet hole is provided with a bell mouth, a plurality of air holes are uniformly distributed on the inner wall of the bell mouth in the circumferential direction, and the extension lines of the axes of the air holes are intersected with the extension line of the axis of the liquid outlet hole. The spray nozzle on the spray gun can improve the atomization degree of liquid and expand the spray range.
Description
Technical Field
The invention belongs to the technical field of spray gun accessories, and particularly relates to a nozzle on a spray gun.
Background
The pneumatic spray gun generally comprises a gun body, a nozzle, an air cap, a retaining screw and a trigger, wherein the nozzle is installed on an insert in an inner hole at the front end of the gun body, the air cap is sleeved outside the nozzle, the front end of a valve needle penetrates through a valve needle hole I of the insert in the gun body and a valve needle hole II in the nozzle, so that the valve needle is in sealed butt joint in a liquid outlet hole of the nozzle, and the trigger is buckled at the middle part of the valve needle, so that the valve needle is driven to move axially, and then the nozzle is opened or closed. Above-mentioned pneumatic spray gun of current structure, liquid spout from the play liquid hole of nozzle, and meanwhile, the venthole blowout of pressurized gas from the hood, and the spun gas that has pressure is just to going out liquid hole spun liquid from to make liquid atomization, at this in-process, the effect that only carries out the atomizing through the venthole spun gas of hood to liquid is not so effective, and in the practical application in-process, we find that the whole degree of atomizing, the scope of spraying is not good.
Disclosure of Invention
The invention aims to provide a spray nozzle on a spray gun, which can improve the atomization degree of liquid and enlarge the spray range.
In order to solve the technical problems, the technical solution of the nozzle on the spray gun of the invention is as follows:
the invention discloses a nozzle on a spray gun, which comprises a nozzle body, wherein a liquid outlet channel and a liquid outlet hole are arranged in the nozzle body, the liquid outlet channel is communicated with the liquid outlet hole, the front end of the liquid outlet hole is provided with a bell mouth, a plurality of air holes are uniformly distributed on the inner wall of the bell mouth in the circumferential direction, and the extension lines of the axes of the air holes are intersected with the extension line of the axis of the liquid outlet hole.
The extension lines of the axes of the plurality of air holes and the extension line of the axis of the liquid outlet hole have only one intersection point.
The position, corresponding to the liquid outlet hole, of the outer peripheral surface of the nozzle body is a revolving body formed by rotating an irregular line segment formed by sequentially connecting a downslope circular arc segment, a first horizontal line segment, an upslope straight segment and a second horizontal line segment around the axis of the liquid outlet hole, the downslope circular arc segment forms a downslope circular arc surface, the first horizontal line segment forms a first circumferential surface, the upslope straight segment forms an upper inclined surface, the second horizontal line segment forms a second circumferential surface, the diameter of the first circumferential surface is smaller than that of the second circumferential surface, and the outer diameter of the nozzle body is larger than that of the second circumferential surface; the air hole penetrates through the upper inclined surface in a matching manner; the upper inclined surface, the first circumferential surface and the lower inclined arc surface form a wind collecting space together.
The inner wall of the air hole has an intersection point at the boundary between the upper inclined surface and the first circumferential surface.
The invention has the beneficial effects that:
compared with the prior art, the spray nozzle, the bell mouth and the air hole on the spray gun are designed, so that the liquid sprayed out of the liquid outlet hole is directly atomized, and the secondary atomization of the blast cap on the spray gun is matched, so that the whole atomization effect is better;
compared with the prior art, the spray nozzle on the spray gun has the air collecting space on the peripheral surface of the spray nozzle body, so that the air pressure entering the air hole is larger and more stable.
Drawings
FIG. 1 is a perspective view of a nozzle on the spray gun of the present invention;
FIG. 2 is a sectional view of the nozzle of the spray gun of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 and 2, the present invention provides a nozzle on a spray gun, including a nozzle body 1, a liquid outlet channel 2 and a liquid outlet hole 3 are arranged in the nozzle body 1, the liquid outlet channel 2 is communicated with the liquid outlet hole 3, a bell mouth 4 is arranged at the front end of the liquid outlet hole 3, a plurality of air holes 5 are uniformly distributed on the inner wall of the bell mouth 4 in a circumferential manner, and extension lines of axes of the air holes 5 intersect extension lines of axes of the liquid outlet hole 3.
The nozzle body 1 is a revolving body structure, a connecting flange plate 6 is arranged on the outer peripheral surface of the nozzle body 1, a plurality of air holes 7 are formed in the connecting flange plate 6, the connecting flange plate 6 divides the nozzle body 1 into a front part 8 and a rear part 9, the whole nozzle is arranged in a gun body of the spray gun, high-pressure air in the gun body firstly reaches the rear part 9 of the nozzle body 1 and a rear closed space formed by the gun body together, then the high-pressure air penetrates through the air holes 7 and reaches the front closed space formed by the front part 8 of the nozzle body 1 and the gun body together, one part of air flow in the front closed space enters the air cap, and the other part of air flow enters the air hole 5 and is sprayed out of the air hole 5.
The extension lines of the axes of the plurality of air holes 5 and the extension line of the axis of the liquid outlet hole 3 are provided with only one intersection point 10. In this case, the liquid and the plurality of airflows collide with each other at the intersection point 10, and the liquid is dispersed in a mist form with the intersection point 10 as a starting point, so that the atomization effect is better.
The position of the outer peripheral surface of the nozzle body 1, which corresponds to the matched liquid outlet hole 3, is a revolving body formed by rotating an irregular line segment formed by sequentially connecting a downslope circular arc segment 11, a first horizontal line segment 12, an upslope straight segment 13 and a second horizontal line segment 14 around the axis of the liquid outlet hole 3, wherein the downslope circular arc segment 11 forms a downslope circular arc surface 15, the first horizontal line segment 12 forms a first circumferential surface 16, the upslope straight segment 13 forms an upper inclined surface 17, the second horizontal line segment 14 forms a second circumferential surface 18, the diameter of the first circumferential surface 16 is smaller than that of the second circumferential surface 18, and the outer diameter of the nozzle body 1 is larger than that of the second circumferential surface 18; the air hole 5 penetrates through the upper inclined surface 17 in a matching manner; the upper inclined surface 17, the first circumferential surface 16, and the lower inclined arc surface 15 together form a wind collecting space 19.
The design of the wind collecting space 19 is that the airflow entering the front enclosed space firstly sinks along an irregular line segment formed by sequentially connecting the downslope circular arc segment 11, the first horizontal line segment 12, the upslope straight line segment 13 and the second horizontal line segment 14, the downslope circular arc segment 11 enables the airflow to have a circular arc flow track and a quicker down flow speed when flowing, has a certain supercharging effect, and the airflow flowing to the first circumferential surface is more stable, after reaching the first circumferential surface 16, because the first circumferential surface 16, the downslope circular arc surface 15 and the upper inclined surface 17 jointly form the wind collecting space 19, the wind collecting space 19 is similar to a groove cavity, the airflow has an accumulation effect in the groove cavity, the air pressure is higher, and the cross section boundary of the air hole 5 on the upper inclined surface 17, the junction between the upper inclined surface 17 and the first circumferential surface 16 has an intersection point, that is to say, when the airflow flows along the first circumferential surface 16 in the direction of the upper inclined surface 17, the airflow can enter the air holes 5 when reaching the boundary position between the upper inclined surface 17 and the first circumferential surface 16 and when continuing to flow upward along the upper inclined surface 17, and the airflow entering the air holes 5 at the critical position has a large pressure and is stable.
In practical application, the inner diameter of the air hole 5 is smaller than or equal to the inner diameter of the liquid outlet hole 3, and generally, the inner diameter of the air hole 5 is the same as the inner diameter of the liquid outlet hole 3, so that the sprayed liquid is atomized to a proper degree. If the inner diameter of the air hole 5 is too large, the air pressure and the flow rate of the gas ejected from the air hole 5 become too large, which may cause the liquid to be ejected too much and bounce back when the liquid is ejected onto the wall surface.
The following are the comparison of the technical parameters of the nozzle of the invention and the nozzles on the market in actual use:
| liquid outlet aperture (mm) | Spraying distance (cm) | Viscosity of paint | Working air pressure (kilogram) | Less than (paint application rate) | |
| Nozzle on the existing market | 1.5 | 20 | 20 sec/NK-2 | 3.5 | The transmission efficiency is =35% per 100 g of paint |
| Nozzle of the invention | 1.5 | 20 | 20 sec/NK-2 | 1.5 | The transmission efficiency is =65% per 100 g of paint |
According to the table, the external working air pressure required by the nozzle is far smaller than the air pressure of the existing nozzles on the market when the nozzle works under the condition that the caliber of the liquid outlet hole, the spraying distance and the spraying viscosity of the paint are the same, so that the energy consumption is greatly reduced, the working cost is reduced, meanwhile, the spraying efficiency of the whole paint is greatly improved, the spraying range is large, the spraying range is wide, and the atomization is finer.
In conclusion, the nozzle has a good atomization effect on liquid sprayed from the liquid outlet hole 3, and is matched with the blast cap on the spray gun to realize secondary atomization, so that the atomization is more exquisite, the spray width is wider, and meanwhile, the nozzle has the effects of saving raw materials, gas and energy.
The foregoing detailed description of the spray nozzle of the spray gun according to the embodiments of the present invention has been presented for purposes of illustration and description, and is intended to provide an understanding of the principles and implementations of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (4)
1. The utility model provides a nozzle on spray gun, includes the nozzle body, this internal liquid outlet channel and the liquid hole of being equipped with of nozzle, and liquid outlet channel link up with liquid hole mutually, its characterized in that: the front end of the liquid outlet hole is provided with a horn mouth, the inner wall of the horn mouth is evenly distributed with a plurality of air holes along the circumference, and the extension lines of the axes of the air holes are intersected with the extension line of the axis of the liquid outlet hole.
2. A nozzle on a spray gun as claimed in claim 1, wherein: the extension lines of the axes of the plurality of air holes and the extension line of the axis of the liquid outlet hole have only one intersection point.
3. A nozzle on a spray gun as claimed in claim 1, wherein: the position, corresponding to the liquid outlet hole, of the outer peripheral surface of the nozzle body is a revolving body formed by rotating an irregular line segment formed by sequentially connecting a downslope circular arc segment, a first horizontal line segment, an upslope straight segment and a second horizontal line segment around the axis of the liquid outlet hole, the downslope circular arc segment forms a downslope circular arc surface, the first horizontal line segment forms a first circumferential surface, the upslope straight segment forms an upper inclined surface, the second horizontal line segment forms a second circumferential surface, the diameter of the first circumferential surface is smaller than that of the second circumferential surface, and the outer diameter of the nozzle body is larger than that of the second circumferential surface; the air hole penetrates through the upper inclined surface in a matching manner; the upper inclined surface, the first circumferential surface and the lower inclined arc surface form a wind collecting space together.
4. A nozzle on a spray gun as claimed in claim 1, wherein: the inner wall of the air hole has an intersection point at the boundary between the upper inclined surface and the first circumferential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178093.2A CN111167625A (en) | 2020-03-14 | 2020-03-14 | Nozzle on spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178093.2A CN111167625A (en) | 2020-03-14 | 2020-03-14 | Nozzle on spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111167625A true CN111167625A (en) | 2020-05-19 |
Family
ID=70626145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010178093.2A Pending CN111167625A (en) | 2020-03-14 | 2020-03-14 | Nozzle on spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111167625A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4440666A1 (en) * | 1994-11-04 | 1996-05-09 | Bbj Servis Ggmbh Fuer Jugendhi | Nozzle used for atomising liquid |
| US20050284957A1 (en) * | 2002-09-23 | 2005-12-29 | Spraying Systems Co. | External mix air atomizing spray nozzle assembly |
| TWM317295U (en) * | 2006-11-24 | 2007-08-21 | Shian-Jau Shr | Painting jet gun with dual nebulization |
| CN202823694U (en) * | 2012-09-24 | 2013-03-27 | 斯普瑞喷雾系统(上海)有限公司 | External-mix type adjustable low-dispersion atomizing spray gun and spraying assembly thereof |
| CN205412001U (en) * | 2015-03-26 | 2016-08-03 | 上海创安消防设备有限公司 | Water mist nozzle |
| CN108367304A (en) * | 2015-10-02 | 2018-08-03 | 喷雾系统公司 | The full cone spray nozzle assemblies of forced air auxiliary |
| CN110787926A (en) * | 2018-08-01 | 2020-02-14 | 萨塔有限两合公司 | Spray nozzle for a spray gun, spray nozzle assembly, spray gun and method for manufacturing a spray nozzle for a spray gun |
| CN211756087U (en) * | 2020-03-14 | 2020-10-27 | 胡超 | Nozzle on spray gun |
-
2020
- 2020-03-14 CN CN202010178093.2A patent/CN111167625A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4440666A1 (en) * | 1994-11-04 | 1996-05-09 | Bbj Servis Ggmbh Fuer Jugendhi | Nozzle used for atomising liquid |
| US20050284957A1 (en) * | 2002-09-23 | 2005-12-29 | Spraying Systems Co. | External mix air atomizing spray nozzle assembly |
| TWM317295U (en) * | 2006-11-24 | 2007-08-21 | Shian-Jau Shr | Painting jet gun with dual nebulization |
| CN202823694U (en) * | 2012-09-24 | 2013-03-27 | 斯普瑞喷雾系统(上海)有限公司 | External-mix type adjustable low-dispersion atomizing spray gun and spraying assembly thereof |
| CN205412001U (en) * | 2015-03-26 | 2016-08-03 | 上海创安消防设备有限公司 | Water mist nozzle |
| CN108367304A (en) * | 2015-10-02 | 2018-08-03 | 喷雾系统公司 | The full cone spray nozzle assemblies of forced air auxiliary |
| CN110787926A (en) * | 2018-08-01 | 2020-02-14 | 萨塔有限两合公司 | Spray nozzle for a spray gun, spray nozzle assembly, spray gun and method for manufacturing a spray nozzle for a spray gun |
| CN211756087U (en) * | 2020-03-14 | 2020-10-27 | 胡超 | Nozzle on spray gun |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |