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Liquid materials supply system

A technology of liquid material and supply system, which is applied in liquid variable capacity machinery, devices for coating liquid on the surface, pump control, etc., which can solve problems such as shortening the service life of on-off valves.

Inactive Publication Date: 2007-12-05
HEISHIN ENGINEERING & EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may shorten the service life of the switching valve

Method used

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  • Liquid materials supply system
  • Liquid materials supply system
  • Liquid materials supply system

Examples

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Embodiment Construction

[0025] Figure 1 shows a liquid material supply system embodying the present invention. The system can be used to apply sealants or coatings in automotive plants.

[0026] As shown in FIG. 1, the liquid material supply system includes a storage container 6 for storing the sealant. This container 6 is connected to a plunger pump 1 as supply means, which is a high-pressure pump. The outlet 1a of the pump 1 is connected to a plurality of supply lines S (only one is shown in FIG. 1 ), and each supply line is connected to an inlet 2a of a remote distributor 2 respectively. The dispenser 2 of the system coats an automotive part or workpiece with a constant amount of sealant.

[0027] Each supply line S is fitted with a pneumatically controlled throttle valve 3 which serves as a pressure reducing valve whose pressure reducing ratio can be set. The supply line S is composed of a high-pressure main supply line S1 on the upstream side of the pressure reducing valve 3 and a low-pressur...

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PUM

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Abstract

A liquid material supply system includes a plunger pump, a flow regulating valve, an air-operated valve, a spring type accumulator and a dispenser. The plunger pump is connected to the flow regulating valve by a primary supply line. The flow regulating valve is connected to the dispenser by a secondary supply line. The on-off valve is connected to the secondary supply line. The accumulator is connected to the secondary supply line between the on-off valve and the dispenser. A pressure sensor detects the pressure substantially at the inlet port of the dispenser. This pressure is the basic for controlling the operation of the air-operated valve through an electromagnetic valve. The second chamber of the accumulator can store part of the liquid material supplied through the secondary supply line. The second chamber varies in volume with the balance between the force of the accumulator spring and the pressure in the secondary supply line so as to relax the pressure fluctuation in this line.

Description

technical field [0001] The present invention relates to a liquid material supply system that may be used in an automobile assembly plant to coat an automotive part or workpiece with a constant amount of sealant or other liquid material, or to fill it with a constant amount of adhesive, grease, or other liquid material These parts or workpieces. Background technique [0002] Generally, in an automobile assembly plant, a plunger pump, which is a high-pressure pump, sucks sealant, adhesive, or other liquid material from a storage container and supplies it through supply lines to dispensers respectively connected to the respective supply lines. The dispenser coats or fills the workpiece with the liquid material. In such systems, a plunger pump or another high pressure pump is used to supply liquid material to one or more remote locations. [0003] Figure 3 of the accompanying drawings shows a conventional system for supplying sealant to a plurality (only one shown in Figure 3)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/08F04B23/02B05D1/26B05D7/24B05C5/02B05C11/10
CPCB05C5/02B05C11/10B05C11/1047H04M1/247
Inventor 小野纯夫泉久寿仓桥晓杉野祥弘须原伸久
Owner HEISHIN ENGINEERING & EQUIPMENT CO LTD