CN214021450U

CN214021450U - Secondary atomizing spray valve

Info

Publication number: CN214021450U
Application number: CN202022061630.3U
Authority: CN
Inventors: 唐森林; 周晓丹; 黄永宁
Original assignee: Shenzhen Axxon Automation Co Ltd
Current assignee: Shenzhen Axxon Automation Co Ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-08-24
Anticipated expiration: 2030-09-19

Abstract

The utility model relates to a secondary atomization spray valve, which comprises a valve body, wherein the lower end of the valve body is connected with an atomization cap through a locking nut, and the lower part of the atomization cap is provided with a secondary atomization cap; a piston cavity is arranged at the upper part in the valve body, a glue cavity is arranged at the lower part in the valve body, a sealing assembly is arranged between the piston cavity and the glue cavity, the piston is connected with the piston cavity in a sliding manner, a firing pin is vertically arranged at the bottom end of the piston, and the firing pin sequentially penetrates through the piston cavity, the sealing assembly and the glue cavity from top to bottom to the bottom of the atomizing cap and is connected with the sealing assembly and the atomizing cap in a sliding manner; compared with the prior art, the beneficial effects are that: the utility model has simple structure, convenient installation, low cost, simple maintenance, and can effectively improve the conditions of high viscosity and poor atomization effect of the glue with high surface tension; this secondary atomizing cap only needs the atomizing cap lower extreme installation fixed at original atomizing valve, need not any change to original structure, can realize the fast switch-over.

Description

Secondary atomizing spray valve

Technical Field

The utility model relates to a valve is glued to the spraying point especially relates to a secondary atomizing 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 automobiles (ECU and automobile bodies), aerospace and military, telecommunication, commercial appliances, heavy equipment (buildings, agriculture and railways), industry (general control) and the like.

Common coating methods include dipping, brushing, spraying and the like; among them, the spray-type spraying method (spraying method in which glue is torn into fine particles by atomizing air) is widely used in the glue dispensing industry with advantages of good consistency, high yield, glue saving, etc.

Experiments show that the glue with higher viscosity and surface tension is difficult to be torn into fine particles by one-time atomizing gas in the spraying process, and more of the glue is drawn, uneven glue film and scattered, so that the existing atomizing technology is insufficient for the glue with high viscosity and high surface tension, and the technological requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses provide a can carry out the atomizing dispensing valve that the secondary atomizes to high viscosity glue to the not enough of prior art, improve the spraying effect, satisfy the technological requirement.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the secondary atomization spray valve comprises a valve body, wherein the lower end of the valve body is connected with an atomization cap through a locking nut, and the lower part of the atomization cap is provided with a secondary atomization cap;

a piston cavity is arranged at the upper part in the valve body, a glue cavity is arranged at the lower part in the valve body, a sealing assembly is arranged between the piston cavity and the glue cavity, the top of the piston cavity is open and provided with a spring seat, the lower part of the spring seat is embedded into the upper part of the piston cavity, a piston is arranged in the piston cavity and is connected with the piston cavity in a sliding manner, a firing pin is vertically arranged at the bottom end of the piston, and the firing pin sequentially penetrates through the piston cavity, the sealing assembly, the glue cavity and the bottom of the atomizing cap from top to bottom and is respectively connected with the sealing assembly and the atomizing cap in a sliding manner;

be provided with the secondary atomizing chamber in the secondary atomizing cap, the secondary atomizing chamber is open-ended cylindrical, and the bottom is provided with the intercommunication the toper through-hole of secondary atomizing chamber bottom, secondary atomizing chamber upper portion is provided with the level respectively and runs through the screw hole of secondary atomizing cap, the middle part in secondary atomizing chamber is provided with the level and runs through the secondary atomizing inlet port of secondary atomizing cap the secondary atomizing inlet port with between the screw hole the level is provided with the sealing washer on the secondary atomizing intracavity wall, the bottom in secondary atomizing chamber is provided with the water conservancy diversion piece, the circumference of water conservancy diversion piece is connected secondary atomizing chamber bottom circumference, the middle part on water conservancy diversion piece top and the position of following its top circumference partition set up a plurality of drainage holes that run through from top to bottom respectively.

Preferably, the sealing assembly comprises a bushing, a first sealing ring and a second sealing ring, the bushing is arranged at the bottom of the piston cavity, a groove is formed in the middle of the bottom end of the bushing, the first sealing ring is installed in the groove, and the second sealing ring is arranged at the bottom of the outer side of the bushing.

Preferably, the bottom of glue cavity is provided with the vertically atomizing intake duct, the glue cavity lower part is provided with the level and runs through the atomizing air inlet of valve body, the upper end of atomizing intake duct is connected the inside port of atomizing air inlet, the outside port of atomizing air inlet is connected with the atomizing air inlet and connects.

Preferably, there are two layers in the atomizing cap, and the inlayer is the glue runner, and the skin is the air runner, the top of air runner is connected the atomizing intake duct, the top of glue runner with the glue cavity intercommunication, glue runner top outside is provided with the third sealing washer, the shrink of glue runner bottom forms the conical nozzle, the firing pin bottom with nozzle sliding connection.

Preferably, an open valve air inlet and a fluid feed inlet which penetrate through the valve body are respectively formed in the inner walls of the piston cavity and the glue cavity, an open valve air inlet connector is connected to the outside of the open valve air inlet, and a fluid feed connector is connected to the outside of the fluid feed inlet.

Preferably, a striker sealing ring is mounted on the top of the striker.

Preferably, the bottom middle part of spring holder is provided with the spring recess, install vertically compression spring in the spring recess, install the compression spring bottom the piston, the piston outer wall is provided with the seal groove along circumference level, install Y type sealing washer in the seal groove.

The piston outer wall is provided with the seal groove along circumference level, install Y type sealing washer in the seal groove.

Preferably, a clamp spring is arranged at the lower part of the spring seat, and a clamp spring groove is formed in the glue cavity corresponding to the clamp spring.

Preferably, the top end of the spring groove is provided with a top column which is vertical to and penetrates through the top of the spring seat, the top column is connected with the spring seat in a sliding mode, the top end of the spring seat is provided with a stroke knob, a scale ring is arranged below the stroke knob, and the stroke knob is connected with the top column.

Preferably, the diameter of the glue flow channel is larger than that of the striker.

Compared with the prior art, the beneficial effects are that: 1. by adopting the scheme, the utility model has the advantages of simple structure, convenient installation, low cost, simple maintenance, and can effectively improve the conditions of high viscosity and poor atomization effect of the glue with high surface tension; 2. the secondary atomizing cap only needs to be installed and fixed at the lower end of the atomizing cap of the original atomizing valve, and can be used when one path of controllable and adjustable air path is communicated, the original structure is not required to be changed, and quick switching can be achieved.

Drawings

Fig. 1 is a front view of a general assembly according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a right-side cross-sectional structure of the embodiment of fig. 1 according to the present invention;

FIG. 3 is a schematic structural view of the secondary atomizing cap of the embodiment of FIG. 1 according to the present invention;

fig. 4 is a schematic cross-sectional view of the secondary atomizing cap according to the embodiment of fig. 1 of the present invention;

fig. 5 is a schematic top view of the drainage block of the embodiment of fig. 1 of the present invention;

the figures above show: the device comprises a stroke knob 1, a scale ring 2, a valve opening air inlet joint 3, a fluid feeding joint 4, a valve body 5, a locking nut 6, an atomizing cap 7, a secondary atomizing cap 8, a piston cavity 15, a glue cavity 18, a spring seat 30, a spring groove 31, a compression spring 9, a piston 11, a firing pin 32, a secondary atomizing cavity 40, a conical through hole 42, a screw hole 41, a secondary atomizing air inlet hole 43, a sealing ring 44, a flow guide block 45, a flow guide hole 46, a bushing 16, a first sealing ring 25, a second sealing ring 17, a third sealing ring 19, a fourth sealing ring 10, an atomizing air inlet channel 26, an atomizing air inlet 27, an atomizing air inlet joint 23, a glue flow channel 21, an air flow channel 28, a conical nozzle 22, a firing pin sealing ring 14, a Y-shaped sealing ring 13, a clamp spring 12 and a support pillar 50.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "front," "rear," and the like as used herein are for descriptive purposes only.

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. 1-5, an embodiment of the present invention is that the secondary atomizing spray valve comprises a valve body 5, wherein an atomizing cap 7 is screwed on the lower end of the valve body 5 through a locking nut 6, and a secondary atomizing cap 8 is installed on the lower portion of the atomizing cap 7;

a piston cavity 15 is arranged at the upper part in the valve body 5, a glue cavity 18 is arranged at the lower part, a sealing assembly is arranged between the piston cavity 15 and the glue cavity 18, the top of the piston cavity 15 is open and provided with a spring seat 30, the lower part of the spring seat 30 is embedded into the upper part of the piston cavity 15, a piston 11 is arranged in the piston cavity 15, the piston 11 is connected with the piston cavity 15 in a sliding manner, the bottom end of the piston 11 is vertically provided with a firing pin 32, and the firing pin 32 sequentially penetrates through the piston cavity 15, the sealing assembly and the glue cavity 18 from top to bottom to the bottom of the atomizing cap 7 and is respectively connected with the sealing assembly and the atomizing cap in a sliding manner;

a secondary atomizing cavity 40 is arranged in the secondary atomizing cap 8, the secondary atomizing cavity 40 is a cylinder with an opening at the top end, a conical through hole 42 communicated with the bottom of the secondary atomizing cavity is arranged at the bottom end, the upper part of the secondary atomizing cavity 40 is respectively provided with screw holes 41 which are horizontally opposite and penetrate through the secondary atomizing cap, screws are respectively arranged in the two screw holes, a secondary atomization air inlet hole 43 which horizontally penetrates through the secondary atomization cap is arranged in the middle of the secondary atomization cavity 40, a sealing ring 44 is horizontally arranged on the inner wall of the secondary atomizing cavity between the secondary atomizing air inlet hole 43 and the screw hole 41, the bottom of the secondary atomization cavity 40 is provided with a flow guide block 45, the flow guide block 45 is cylindrical, the circumference of the flow guide block is connected with the circumference of the bottom of the secondary atomization cavity 40, and a plurality of vertically-penetrating flow guide holes 46 are respectively formed in the middle of the top end of the flow guide block 45 and at positions which are equally divided along the circumference of the top end of the flow guide block.

Preferably, the sealing assembly comprises a bushing 16, a first sealing ring 25 and a second sealing ring 17, the bushing 16 is arranged at the bottom of the piston cavity 15, a groove is formed in the middle of the bottom end of the bushing 16, the first sealing ring 25 is installed in the groove, and the second sealing ring 17 is arranged at the bottom of the outer side of the bushing.

Preferably, a sealing assembly is provided to prevent glue from flowing into the piston cavity as the striker moves up and down.

Preferably, the bottom of glue cavity 18 is provided with vertically atomizing intake duct 26, the glue cavity lower part is provided with the level and runs through the atomizing air inlet 27 of valve body, atomizing intake duct 26's upper end is connected the inside port of atomizing air inlet 27, atomizing air inlet 27's outside port is connected with atomizing air inlet joint 23.

Preferably, there are two layers in the atomizing cap 7, the inner layer is a glue flow channel 21, the outer layer is an air flow channel 28, the top end of the air flow channel 28 is connected to the atomizing air inlet channel 26, the top end of the glue flow channel 21 is communicated with the glue cavity 18, a third sealing ring 19 is arranged outside the top end of the glue flow channel 21, the bottom of the glue flow channel 21 is contracted to form a conical nozzle 22, the bottom end of the striker 32 is slidably connected with the nozzle 22, and the bottom of the air flow channel is contracted to form a secondary conical nozzle at the lower part of the conical nozzle.

Preferably, the inner walls of the lower parts of the piston cavity 15 and the glue cavity 18 are respectively provided with a valve opening air inlet and a fluid feed inlet which penetrate through the valve body, the exterior of the valve opening air inlet is connected with a valve opening air inlet joint 3, and the exterior of the fluid feed inlet is connected with a fluid feed joint 4.

Preferably, a striker sealing ring 14 is mounted on the top of the striker 32.

Preferably, a spring groove 31 is formed in the middle of the bottom end of the spring seat 30, a vertical compression spring 9 is installed in the spring groove 31, a piston 11 is installed at the bottom end of the compression spring 9, a sealing groove is horizontally formed in the outer wall of the piston 11 along the circumference, and a Y-shaped sealing ring 13 is installed in the sealing groove.

Preferably, a snap spring 12 is arranged at the lower part of the spring seat 30, and a snap spring groove is arranged in the glue cavity corresponding to the snap spring.

Preferably, the top end of the spring groove 31 is provided with a top pillar 50 which is vertical to and penetrates through the top of the spring seat, the top pillar 50 is connected with the spring seat 30 in a sliding manner, the top end of the spring seat 30 is provided with a stroke knob 1, a scale ring 2 is arranged below the stroke knob 1, and the stroke knob is connected with the top pillar 50.

Preferably, the diameter of the glue flow channel 21 is larger than the diameter of the striker 32.

Preferably, the outer end of the secondary atomization air inlet hole 43 is connected with a secondary atomization air inlet joint 24.

Preferably, a fourth sealing ring 10 is arranged on the spring seat 30 above the snap spring 12.

The working principle is as follows: gas enters the valve body 5 from the valve opening gas inlet connector 3, the piston 11 is pushed to move upwards, at the moment, the valve body is in an open state, glue enters the glue cavity 18 from the fluid feed connector 4, flows out from the nozzle 22 through the glue flow channel 21, meanwhile, atomized gas pressure entering from the atomized gas inlet connector 23 acts on the glue (high-viscosity glue) at the nozzle 22 through the atomized gas inlet channel 26 of the glue cavity and the atomization cap 7, so that the glue is instantly in a wire drawing shape (semi-atomized state), at the moment, atomized gas entering from the secondary atomized gas inlet connector 24 atomizes the glue again, and the atomized gas is sprayed out from a conical through hole of the secondary atomization cap; the valve opening air pressure is closed, the piston 11 moves downwards under the action of the compression spring 9, the bottom end of the firing pin 32 is in contact with the nozzle 22 to form a seal, the valve is closed, glue is not discharged from the nozzle, and a spraying cycle is completed.

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 secondary atomization spray valve is characterized by comprising a valve body, wherein the lower end of the valve body is connected with an atomization cap through a locking nut, and the lower part of the atomization cap is provided with a secondary atomization cap;

a piston cavity is arranged at the upper part in the valve body, a glue cavity is arranged at the lower part in the valve body, a sealing assembly is arranged between the piston cavity and the glue cavity, the top of the piston cavity is open and provided with a spring seat, the lower part of the spring seat is embedded into the upper part of the piston cavity, a piston is arranged in the piston cavity and is connected with the piston cavity in a sliding manner, a firing pin is vertically arranged at the bottom end of the piston, and the firing pin sequentially penetrates through the piston cavity, the sealing assembly and the glue cavity from top to bottom to the bottom of the atomizing cap and is respectively connected with the sealing assembly and the atomizing cap in a sliding manner;

2. The secondary atomizing spray valve of claim 1, wherein the sealing assembly includes a bushing, a first sealing ring and a second sealing ring, the bushing is disposed at the bottom of the piston cavity, a groove is disposed in the middle of the bottom end of the bushing, the first sealing ring is installed in the groove, and the second sealing ring is disposed at the bottom of the outer side of the bushing.

3. The secondary atomizing spray valve of claim 1, wherein the bottom of the glue cavity is provided with a vertical atomizing air inlet channel, the lower portion of the glue cavity is provided with an atomizing air inlet channel which horizontally penetrates through the valve body, the upper end of the atomizing air inlet channel is connected with an internal port of the atomizing air inlet channel, and an external port of the atomizing air inlet channel is connected with an atomizing air inlet joint.

4. The secondary atomizing spray valve of claim 3, wherein there are two layers inside the atomizing cap, the inner layer is a glue flow channel, the outer layer is an air flow channel, the top end of the air flow channel is connected to the atomizing air inlet channel, the top end of the glue flow channel is communicated with the glue cavity, a third sealing ring is arranged outside the top end of the glue flow channel, the bottom of the glue flow channel is contracted to form a conical nozzle, and the bottom end of the firing pin is slidably connected to the nozzle.

5. The secondary atomizing spray valve of claim 1, wherein said piston chamber and said glue chamber are respectively provided with a valve opening air inlet and a fluid inlet through said valve body, said valve opening air inlet is externally connected to a valve opening air inlet joint, and said fluid inlet is externally connected to a fluid inlet joint.

6. The secondary atomizing spray valve of claim 1 wherein said striker is fitted with a striker ring on top of said striker.

7. The secondary atomizing spray valve of claim 1, wherein a spring groove is formed in the middle of the bottom end of the spring seat, a vertical compression spring is installed in the spring groove, the piston is installed at the bottom end of the compression spring, a sealing groove is horizontally formed in the outer wall of the piston along the circumference, and a Y-shaped sealing ring is installed in the sealing groove.

8. The secondary atomizing spray valve of claim 1, wherein a snap spring is arranged at the lower part of the spring seat, and a snap spring groove is arranged in the glue cavity corresponding to the snap spring.

9. The secondary atomizing spray valve of claim 7, wherein a top end of the spring groove is provided with a top pillar which is vertical to and penetrates through the top of the spring seat, the top pillar is slidably connected with the spring seat, a stroke knob is installed at the top end of the spring seat, a scale ring is installed below the stroke knob, and the stroke knob is connected with the top pillar.

10. The secondary atomizing spray valve of claim 4 wherein said glue flow passage has a diameter greater than a diameter of said firing pin.