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Knapsack sprayer pump safety valve

A nebulizer and knapsack technology, applied in the field of nebulizers, can solve problems such as unfavorable liquid backflow and complex structure, and achieve the effects of easy replacement, simple structure and convenient installation

Inactive Publication Date: 2009-05-13
李冠军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not only complicated in structure, but also unfavorable for the discharged liquid to return to the medicine box

Method used

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  • Knapsack sprayer pump safety valve
  • Knapsack sprayer pump safety valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0009] The invention discloses a pump safety valve for a knapsack sprayer, such as figure 1 , figure 2 As shown, the sprayer has a medicine box 1, a rocking lever 11, a spray bar 15, and a spray nozzle 14, and the medicine box (storing insecticide liquid) has structures such as a case cover 13 and an air chamber 12, and one of them is installed on the sprayer medicine box base. The pump, the bottom of the pump 2 is formed with a bracket 3, the bracket 3 is connected with a spring seat 5, there is a water inlet 6 under the spring seat 5, and a spring 7 is installed in the spring seat 5, and its main technical feature is that the upper end of the spring has a hollow The sealing seat 8, the spring seat 5 and the sealing seat 8 can be made of plastic. There is a sealing ring 9 on the sealing seat, which is matched with the sealing ball 10. The sealing ring 9 or sealing pad can be made of rubber and other materials. , The sealing ring 9 and the sealing ball 10 cooperate with each...

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PUM

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Abstract

A back atomizer pump safety valve comprise a pump mounted on the base of the atomizer drug box, while the bottom of the pump is arranged with a support at the water inlet, the support is connected with a spring base, and the spring base contains a spring. The upper end of the spring is arranged with a hollow sealing base with a sealing ring engaged with a sealing ball. The inventive safety valve is mounted at the water inlet of the pump, and the spring can be selected via preset pressure, for example, when the working pressure is 4bar, and when the indoor pressure is in 4bar, the pump will not affect water inlet, and when the indoor pressure is at 4bar, the pressure of pump reaches 4bar and over then, the liquid pressure of pump will press the sealing ball to overcome the spring force to reflux the liquid into drug box, to release the air room. The invention has simple structure or the like.

Description

technical field [0001] The invention relates to a sprayer, in particular to a sprayer pump safety valve, which belongs to agricultural plant protection machinery. Background technique [0002] Sprayer is a commonly used agricultural plant protection machinery with many types. For knapsack sprayers, according to international standards, all parts of the sprayer should not be under pressure greater than 5bar when working. However, because the existing knapsack sprayer does not have a safety valve in the liquid pump part, the pressure carried by the air chamber often reaches 6 to 8 bar in actual use, and it can reach more than 8 bar when placed on the ground, and the relevant standards require the burst pressure of the air chamber Reaching or exceeding 12bar, therefore, the above-mentioned pressure is already close to the standard breaking pressure, which seriously affects the service life of the product, and there is a hidden danger of safety. [0003] The reason why the exis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B9/08B05B1/30F16K17/04
Inventor 李冠军
Owner 李冠军