CN211964807U

CN211964807U - Atomizing-gas-free spray valve

Info

Publication number: CN211964807U
Application number: CN201922470245.1U
Authority: CN
Inventors: 唐森林; 周晓丹; 黄永宁; 陆科惠
Original assignee: Shenzhen Axxon Automation Co Ltd
Current assignee: Shenzhen Axxon Automation Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-20
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a non-atomizing gas spray valve, including stroke seat, upper valve body, lower valve body, the rubber guide pipe that connects gradually from top to bottom, the outer wall of stroke seat with the inner wall of upper valve body passes through first sealing washer and connects, still be equipped with the firing pin subassembly in the upper valve body, the upper portion of firing pin subassembly through compression spring with the upper wall swing joint of stroke seat inboard, the firing pin subassembly include piston disc and with the firing pin that the piston disc is fixed, piston disc middle part pass through the second sealing washer with the inner wall of upper valve body is connected; the bottom of the inner side of the upper valve body is also provided with a flood plug mounting position, a first flood plug is placed in the flood plug mounting position, and a first movable hole for the movement of the firing pin is formed in the first flood plug; the utility model provides a no atomizing gas spray valve, fluid obtain great kinetic energy under the pressure effect, and the fluid sprays out with great speed behind the aperture, can realize the thinner spraying of rete, can save glue and can not produce the bubble.

Description

Atomizing-gas-free spray valve

Technical Field

The utility model relates to the spray valve especially involves a no atomizing gas spray valve.

Background

Surface coating is a technique of forming a film layer on the surface of a substrate to improve the surface properties. The method is widely applied to the fields of automobile ECU and automobile bodies, aerospace and military, telecommunication, commercial appliances, heavy equipment, such as buildings, agriculture, railways, industry and the like.

Common coating methods include dipping, brushing, spraying and the like; the spraying method is widely applied to the dispensing industry with the advantages of good consistency, high yield, no or little shielding and the like; at present, a spraying dispensing valve has two spraying modes of non-spraying and spraying.

Film coating, the resolution of the edge of a film layer obtained by needle head coating is good, splashing scattering points do not exist, the efficiency of a shielding process is high, but the thickness of the film layer is thick, glue is wasted, and the glue with high viscosity cannot form film coating; and the spraying mode that has the atomizing, because glue is torn into less liquid drop by atomizing gas, consequently the rete thickness is thin, more saves glue, nevertheless because of atomizing reason, glue mixes with atomizing air when atomizing, produces the glue bubble very easily, influences the outward appearance and the barrier propterty of product, causes the product to scrap. Meanwhile, the atomization air pressure of the spray gun cannot be too large, and generally the atomization air pressure exceeding 5.0 Psi can cause the glue on the surface of the sprayed product to overflow from four sides, so that the glue overflow is poor, the atomization efficiency is low, and therefore, the prior art has defects and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide a spray dispensing valve which can realize the glue without atomization gas through a nozzle and a nozzle cap structure, wherein the fluid is extruded into a narrow return groove of the nozzle through a high pressure air source, the fluid enters from two sides of the return groove to form a centrifugal vortex, and then is sprayed out from a small hole of the nozzle and the nozzle cap, at this time, the fluid obtains a larger kinetic energy under the action of pressure, after passing through the small hole, the fluid is sprayed out at a larger speed, under the interaction of the surface tension of the fluid, the centrifugal force generated by the return nozzle, the viscosity of the fluid and the air resistance, the water film shape during spraying is rapidly converted into atomization from the atomization state, the spraying with a thinner film layer can be realized, because no gas and no glue are mixed, the glue can not generate bubbles, the spraying efficiency is 2-3 times higher than that of the traditional atomizing valve, the coating efficiency of the water curtain valve and the film thickness of the traditional atomizing valve, can save glue, and solve the bubble problem of traditional atomizing valve.

In order to solve the above problem, the utility model provides a technical scheme as follows:

an atomizing-gas-free spray valve comprises a stroke seat, an upper valve body, a lower valve body and a rubber guide tube which are sequentially connected from top to bottom, wherein the outer wall of the stroke seat is connected with the inner wall of the upper valve body through a first sealing ring, a firing pin assembly is further arranged in the upper valve body, the upper part of the firing pin assembly is movably connected with the upper wall of the inner side of the stroke seat through a compression spring, the firing pin assembly comprises a piston disc and a firing pin fixed with the piston disc, and the middle part of the piston disc is connected with the inner wall of the upper valve body through a second sealing ring; the bottom of the inner side of the upper valve body is also provided with a flood plug mounting position, a first flood plug is placed in the flood plug mounting position, and a first movable hole for the movement of the firing pin is formed in the first flood plug; a second universal plug is arranged at the joint of the upper valve body and the lower valve body, a bushing is arranged on the outer side of the second universal plug, the upper part of the bushing is connected with the lower part of the upper valve body through a third sealing ring, and the outer side of the bushing is connected with the inner wall of the upper part of the lower valve body through a fourth sealing ring; the lower valve body below is equipped with the fixing base, the lower valve body passes through the fixing base with it is fixed to lead the rubber tube, it is equipped with the nozzle cap to lead the rubber tube below, be equipped with the nozzle in the nozzle cap, the middle part in the nozzle outside pass through the fifth sealing washer with the inner wall of nozzle cap is connected, sealed the pad is placed on the inboard upper portion of nozzle.

Further, a guide bearing is further arranged above the second flooding plug, and the guide bearing is sleeved with the firing pin.

Further, a gas pressure joint is arranged on the side surface of the upper valve body, and valve opening gas enters the upper valve body through the gas pressure joint; the side of lower valve body is equipped with the feed and connects, glue the feed connects the entering down inside the valve body.

Furthermore, a second movable hole is formed in the sealing gasket, when the air supply is closed, the compression spring acts on the piston disc of the firing pin assembly to force the firing pin assembly to move downwards, the lower end of the firing pin assembly moves downwards to be in sealing fit with the sealing gasket, and the nozzle is prevented from continuously spraying glue.

Compared with the prior art, the atomizing-gas-free spray valve has the advantages that the spraying area is large, and the efficiency is high; the sprayed glue does not generate bubbles, so that the reliability and the yield of products are improved; compared with the traditional atomizing valve, the atomizing valve reduces one path of supply of atomizing gas, has simpler structure and corresponding controller, and is convenient for reducing cost.

Drawings

For a clearer explanation of the embodiments or technical solutions in the prior art, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the nozzle of the present invention;

FIG. 4 is a schematic structural view of a nozzle cap according to the present invention;

description of the drawings: 1-stroke knob, 2-scale ring, 3-upper valve body, 4-pneumatic joint, 5-feeding joint, 6-lower valve body, 7-rubber guide pipe, 8-compression spring, 9-first sealing ring, 10-firing pin component, 101-piston disc, 102-firing pin, 11-first pan plug, 12-guide bearing, 13-third sealing ring, 14-fourth sealing ring, 16-sealing gasket, 17-fifth sealing ring, 18-nozzle, 181-returning groove, 19-nozzle cap, 20-stroke seat, 21-second sealing ring, 22-bushing and 23-second pan plug.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1-4, one embodiment of the present invention is:

an atomizing-gas-free spray valve comprises a stroke seat 20, an upper valve body 3, a lower valve body 6 and a rubber guide tube 7 which are sequentially connected from top to bottom, wherein the outer wall of the stroke seat 20 is connected with the inner wall of the upper valve body 2 through a first sealing ring 9, a firing pin assembly 10 is further arranged in the upper valve body 3, the upper part of the firing pin assembly 10 is movably connected with the upper wall of the inner side of the stroke seat 20 through a compression spring 8, the firing pin assembly 10 comprises a piston disc 101 and a firing pin 102 fixed with the piston disc 101, and the middle part of the piston disc 101 is connected with the inner wall of the upper valve body 3 through a second sealing ring 21; a flooding plug mounting position is further arranged at the bottom of the inner side of the upper valve body 3, a first flooding plug 11 is placed in the flooding plug mounting position, and a first movable hole for the movement of the firing pin 102 is formed in the first flooding plug 11; a second universal plug 23 is arranged at the joint of the upper valve body 3 and the lower valve body 6, a lining 22 is arranged on the outer side of the second universal plug 23, the upper part of the lining 22 is connected with the lower part of the upper valve body 3 through a third sealing ring 13, and the outer side of the lining 22 is connected with the inner wall of the upper part of the lower valve body 6 through a fourth sealing ring 14; 6 below of lower valve body is equipped with fixing base 24, lower valve body 6 passes through fixing base 24 with it is fixed to lead rubber tube 7, it is equipped with nozzle cap 19 to lead rubber tube 7 below, be equipped with nozzle 18 in the nozzle cap 19, the middle part in the nozzle 18 outside pass through fifth sealing washer 17 with the interior wall connection of nozzle cap 19, sealed 16 of filling up is placed on the upper portion of nozzle 18 inboard.

Further, a guide bearing 12 is further provided above the second flooding plug 23, and the guide bearing 12 is fitted to the striker 102.

Further, a gas pressure joint 3 is arranged on the side surface of the upper valve body 3, and valve opening gas enters the upper valve body 3 through the gas pressure joint 3; the side of lower valve body 6 is equipped with feed connector 5, glue feed connector 5 gets into inside lower valve body 6.

Further, the sealing gasket 16 is provided with a second movable hole, when the air supply is closed, the compression spring acts on the piston disc of the firing pin assembly to force the firing pin assembly to move downwards, the lower end of the firing pin assembly moves downwards to be in sealing fit with the sealing gasket, and the nozzle is prevented from continuously spraying the glue.

In the embodiment, as shown in fig. 2, the upper valve body 3, the lower valve body 6 and the rubber guide tube 7 are connected by a corrosion-resistant sealing ring to ensure sealing without leakage, a piston structure in the valve body is a striker assembly 10, a compression spring 8 is arranged between a stroke knob 1 arranged on a stroke seat 20 and the striker assembly 10, compressed gas is supplied from a valve opening air pressure joint 4 to act on a piston disc 101 of the striker assembly 10, so that the striker assembly 10 moves upwards, the stroke knob 1 is arranged above the stroke seat 20, a scale ring 2 is arranged on the stroke knob 1, and the distance of upward movement of the piston disc 101 of the striker assembly 10 can be controlled by the stroke knob 1 to change the flow rate of the valve body; when the air supply is closed, the compression spring 8 acts on the piston disc 101 of the firing pin assembly 10 to force the firing pin assembly 10 to move downwards, the lower end of a firing pin 102 of the firing pin assembly 10 is in sealing fit with the nozzle 18, wherein the firing pin 102 penetrates through the upper valve body 3, the lower valve body 6 and the rubber guide tube 7; the lower valve body 6 is connected with a rubber guide tube 7, the lower end of the rubber guide tube 7 is connected with a nozzle 18 and a nozzle cap 19, fluid enters the lower valve body 6 from a supply connector 5 on the side edge of the lower valve body 6, enters the nozzle 18 through the rubber guide tube 7, then flows out from a small hole of the nozzle 18, enters the returning groove 181 through the outer side of the lower part of the nozzle 18 to form centrifugal vortex, and then is sprayed out in a mist form from the small hole of the nozzle cap 19.

The working process is as follows: the spray valve is a striker type dispensing valve which adopts an air source as a driving source, valve opening air enters an upper valve body from an air inlet joint and pushes a striker assembly to move upwards, at the moment, the valve body is in an open state, glue enters a lower valve body from the air inlet joint under the action of feeding air pressure and is sprayed out in a mist shape through a glue guide pipe, a sealing gasket, a nozzle and a nozzle cap, at the moment, fluid obtains larger kinetic energy under the action of pressure, and is sprayed out at a higher speed after passing through a small hole, and the fluid is rapidly converted from a water film shape to an atomization shape during spraying under the mutual action of surface tension of the fluid, centrifugal force generated by a loop-shaped nozzle, viscosity of the fluid and air resistance to form atomization, so that the thinner spraying of the film layer can be realized; the valve opening gas is closed, the firing pin assembly runs downwards under the action of the downward acting force of the compression spring and is in a sealing state when being in contact with the sealing gasket, the nozzle is not in a valve closing state, and the glue does not generate bubbles due to the fact that the gas and the glue are not mixed, so that the spraying efficiency of the glue is 2-3 times higher than that of a traditional atomizing valve, the coating efficiency of the water curtain valve and the film thickness of the traditional atomizing valve are achieved, the glue can be saved, and the problem of bubbles of the traditional atomizing valve is solved.

It should be noted that the above technical features are continuously combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; moreover, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. The atomizing-gas-free spray valve is characterized by comprising a stroke seat, an upper valve body, a lower valve body and a rubber guide tube which are sequentially connected from top to bottom, wherein the outer wall of the stroke seat is connected with the inner wall of the upper valve body through a first sealing ring, a firing pin assembly is further arranged in the upper valve body, the upper part of the firing pin assembly is movably connected with the upper wall of the inner side of the stroke seat through a compression spring, the firing pin assembly comprises a piston disc and a firing pin fixed with the piston disc, and the middle part of the piston disc is connected with the inner wall of the upper valve body through a second sealing ring; the bottom of the inner side of the upper valve body is also provided with a flood plug mounting position, a first flood plug is placed in the flood plug mounting position, and a first movable hole for the movement of the firing pin is formed in the first flood plug; a second universal plug is arranged at the joint of the upper valve body and the lower valve body, a bushing is arranged on the outer side of the second universal plug, the upper part of the bushing is connected with the lower part of the upper valve body through a third sealing ring, and the outer side of the bushing is connected with the inner wall of the upper part of the lower valve body through a fourth sealing ring; the lower valve body below is equipped with the fixing base, the lower valve body passes through the fixing base with it is fixed to lead the rubber tube, it is equipped with the nozzle cap to lead the rubber tube below, be equipped with the nozzle in the nozzle cap, the middle part in the nozzle outside pass through the fifth sealing washer with the inner wall of nozzle cap is connected, sealed the pad is placed on the inboard upper portion of nozzle.

2. The non-atomizing air-atomizing valve as set forth in claim 1, wherein a guide bearing is further disposed above said second flooding plug, and said guide bearing is sleeved with said firing pin.

3. The aerosol-free aerosol valve as claimed in claim 1, wherein a pneumatic connector is provided on a side surface of the upper valve body, and valve opening gas is introduced into the upper valve body through the pneumatic connector; the side of lower valve body is equipped with the feed and connects, glue the feed connects the entering down inside the valve body.

4. The aerosol-free aerosol spray valve of claim 3, wherein the gasket defines a second movable opening, and when the air supply is closed, the compression spring acts on the piston disc of the firing pin assembly to force the firing pin assembly to move downward, and the lower end of the firing pin assembly moves downward to sealingly engage the gasket to prevent the nozzle from continuing to eject the glue.