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External spring spray gun head with double check valve structure

A double-check valve, spring-type technology, applied in a single hand-held device, injection device, etc., can solve the problems of short service life, high failure rate, and many parts of the spring

Active Publication Date: 2021-09-10
余姚市瑞达日用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages of the spray gun head springs in the prior art, such as short service life, many parts, large space occupation and high failure rate, and provides an external spring spray gun head with a double check valve structure.

Method used

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  • External spring spray gun head with double check valve structure
  • External spring spray gun head with double check valve structure
  • External spring spray gun head with double check valve structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An external spring-type spray gun head with a double check valve structure, including a mounting seat 2, and a trigger 1 installed on the mounting seat 2, a spring member 3, a piston 100, a nozzle 300 and a cover body 10; There is a shell. The mounting base 2 includes a piston sleeve 4 for installing the piston 100; the piston 100 is sealed and installed in the piston sleeve 4, the trigger 1 is installed on the mounting base 2 and can rotate around the mounting base 2, and one end of the piston 100 is connected with the trigger 1, The trigger 1 drives the piston 100 to reciprocate, one end of the spring member 3 is installed on the mounting base 2 and the cover body 10, and the other end of the spring member 3 is installed on the trigger 1 to collect elastic potential energy to make the trigger 1 and the piston 100 return automatically The spring part 3 is a metal part, the mounting seat 2 is a plastic part or a metal part, the inner surface of the cover body 10 is prov...

Embodiment 2

[0062] Such as Figure 1 to Figure 5 As shown, the difference between the present embodiment and the first embodiment is that the limit snap ring 6 is fixedly connected with the cover body 10 or the limit seat 5 .

Embodiment 3

[0064] The difference between this embodiment and Embodiment 2 is that the limit snap ring 6 is fixedly connected with the cover body 10 or the limit seat 5 by glue. The connecting rib 103 is a reinforcement 108 integrally formed by four congruent right-angled trapezoidal plates, and the radial dimension of the connecting rib 103 toward the trigger 1 gradually decreases.

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Abstract

The invention relates to the field of spray devices, and discloses an external spring-type spray gun head with a double check valve structure, including a mounting base (2), a trigger (1) mounted on the mounting base (2), a spring member (3 ), piston (100), nozzle (300) and cover body (10); mounting seat (2) includes piston bushing (4) for installing piston (100); piston (100) is installed on piston bushing ( 4), the trigger (1) is installed on the mounting base (2) and can rotate around the mounting base (2), one end of the piston (100) is connected with the trigger (1), and the trigger (1) drives the piston (100) to reciprocate One end of the spring member (3) is installed on the mount (2) and the cover (10), and the other end of the spring member (3) is installed on the trigger (1) for collecting elastic potential energy to make the trigger (1) and the piston (100) return automatically. The device has the advantages of long service life, compact structure, few parts and easy installation.

Description

technical field [0001] The invention relates to the field of spray equipment, in particular to an external spring-type spray gun head and a spray gun head with a double check valve structure. Background technique [0002] Liquid spray gun, as a simple and effective liquid atomization equipment, is widely used in household chemical cleaners, car protection products, gardening products, animal care products, furniture polishing products and other fields, bringing a lot of convenience and quickness to people. The working principle of the watering can is to increase the air pressure in the watering can through the reciprocating movement of the trigger, so that the liquid in the can is sprayed out. After the liquid is sprayed out, the trigger will automatically return under the action of the spring. [0003] For example, the Chinese patent CN201020286132.2 adopts an inclined trigger movement structure, and the whole body composed of the spring and the piston is placed at a certa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B11/02B05B11/00
CPCB05B11/02B05B11/0005B05B11/0008B05B11/1011B05B11/1077B05B11/1064
Inventor 施瑞法
Owner 余姚市瑞达日用品有限公司
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