JPS60192884A - Fixed-quantity discharging device of multi-type fluid materials - Google Patents

Abstract

PURPOSE:To make a device small-sized and lightweight by using diaphragm pumps as feed pumps provided at the intake sides of fixed-quantity discharge pumps. CONSTITUTION:Fixed-quantity discharge pumps 7, 8 are operated by an air cylinder 4. Diaphragm pumps 15, 16 are connected to intake ports 10, 10 of individual discharge pumps 7, 8 respectively. Diaphragms 22, 22 are symmetrically provided on the left and right sections of the diaphragm pumps 15, 16 by being supported with a center rod 21. A pressure source 26 is connected to an air chamber 23 between these diaphragms 22, 22 via a transfer valve 25 to operate the diaphragm 22. The intake sides of the diaphragm pumps 15, 16 are connected to two types of fluid material tanks 19, 20 respectively.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a highly viscous fluid material such as an adhesive, a filler, a coating agent, a paint, etc., in which, for example, a main component and a curing agent are pumped separately to prevent them from mixing. The present invention relates to a device for quantitatively discharging multiple types of fluid materials, which is used in applications such as the following.

[Technical previous version of the invention and its problems] Conventionally, in this type of device, the metering discharge pump that uses volume change lacks the power to suck high viscosity fluid material, so in order to compensate for the lack of suction power, a gland was installed. An air-driven piston pump with a seal part is used to force-feed the high-viscosity fluid material to the suction port of the above-mentioned metered-discharge pump, but since the piston pump is used, it requires a long time for after-sales maintenance due to its large volume and weight. This method not only takes time, but also has the disadvantage that it is difficult to make the device compact.

There is also a method of applying air pressure to a fluid material tank to pump the fluid material, but this method has the disadvantage that some fluid materials harden when exposed to air, and the fluid material tank must be made sturdy, making it heavy.

[Purpose of the invention]

The present invention connects a diaphragm pump that forcibly feeds a fluid material to the suction port of a metering pump that discharges multiple types of high-viscosity fluid materials separately, thereby reducing the size and weight of the device.
The aim is to facilitate maintenance and management.

[Summary of the invention]

The first multi-species fluid dynamic metering dispensing device of the present invention includes a plurality of diaphragm pumps connected to each fluid material suction port of the metering pump that separately discharges multiple types of high-viscosity fluid materials in fixed quantities by utilizing volume changes. The apparatus according to the second aspect of the present invention is characterized in that the discharge ports of the plurality of diaphragm pumps are connected to each other, and the suction ports of the plurality of diaphragm pumps are separately connected to a plurality of fluidic material tanks. In one diaphragm pump, the center 0
The discharge pipes drawn out from the left and right pump chambers, which are alternately expanded and contracted by the left and right diaphragms connected by a tube, are connected separately, and a charge tank is connected to each discharge pipe, and the discharge pipes are drawn out from the left and right pump chambers. This structure is characterized in that each drawn-out suction pipe is separately connected to two fluidic material tanks.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

FIG. 1 shows a first embodiment of the present invention, in which numeral 1 is a metering pump that separately discharges two types of high-viscosity fluid materials 2 and 3 by utilizing volume changes.

This metering pump 1 has a pre-nitrogen tip end of a piston rod 5 which is reciprocated by one air cylinder 4, and a pump piston 9 which slides inside two pump bodies 7 and 8.
and the fluid material inlet 10 on the bottom of the pump body 7.8 and the lower valve hole 1 in the inner cavity 11 of the pump piston 9.
2 are provided with check valves 13 and 14, respectively.

Two diaphragm pumps 15 and 16 are installed at the fluid material suction ports 10 of the left and right pump bodies 7° 8 of such a metering pump 1.
The discharge ports 17 of the two diaphragm pumps 15, 16 are connected to each other, and the suction ports 18 of the two diaphragm pumps 15, 16 are respectively connected to two types of fluid tank 19, 20. These two types of fluid materials 4111
For example, in the case of an adhesive, a curing agent and a main agent are respectively accommodated in 9.20 as fluidized materials 2.3.

Each of the diaphragm pumps 15 and 16 is provided with a diaphragm 22 connected to the left and right parts by a center rod 21, and the diaphragm 22 is symmetrically arranged in the left and right parts.
The air chamber 23 and the pump chamber 24 are partitioned through the air chamber 23, and the air from the pneumatic source 26 is alternately controlled to be supplied and discharged to the left and right air chambers 23 by the switching valve 25, and the left and right pump chambers 24 is connected to the suction port 18 via a suction check valve 27, and is also connected to the discharge port 17 via a discharge check valve 28. The suction ports 18 of the left and right diaphragm pumps 15, 16 are separately connected to the fluid tank 19, 20.
Connect to.

To explain the operation of the embodiment shown in FIG. 1, the left and right diaphragm pumps 15 and 16 each have a
By the expansion and contraction of the diaphragm 22 by alternately supplying and discharging air to and from the metering pump 1, the fluid material is sucked into one of the left and right pump chambers, and at the same time, the fluid material is discharged from the other pump chamber. The fluid material is always forcibly fed to the tube 10.

Therefore, each suction port 10 of the metering pump 1 is always pressurized and supplied with high viscosity fluid material from either the left or right pump chamber 24 of each diaphragm pump 15, 16, and this high viscosity fluid material can be reliably sucked. I can do it.

This metering pump 1 sucks the fluid material into the pump bodies 7 and 8 from the suction port 10 when the pump piston 9 rises, and discharges the fluid material on the piston 9 from the discharge port 29.
Further, when the pump piston 9 descends, the fluid material below the piston 9 is moved upward through the valve hole 12, the piston inner space 11, and the through hole 30, in preparation for being discharged from the discharge port 29 when the piston next ascends. In addition, the left and right pump bodies 7,
The piston 8 and the piston 9 are formed to have different diameters, and the left and right cross-sectional area ratio is set to 1:2, for example, so that the left and right discharge amount ratio is set to 1:2.

Next, FIG. 2 shows a second embodiment of the present invention.

Since the metering pump 1 is the same as that shown in FIG. 1, the same reference numerals are given and the explanation of its structure and operation will be omitted.

A center rod 24 is installed in one diaphragm pump 31 at the left and right fluid material suction ports 10 of the metering pump 1.
The left and right pump chambers 24 are alternately expanded and contracted by the left and right diaphragms 22 connected by the discharge check valve 2.
The discharge pipes 32 drawn out through 8 are connected separately. In addition, the suction pipes 33 drawn out from the left and right pump chambers 24 through the suction check valves 27 are connected to the two fluidic material tanks 19.
20 separately.

Furthermore, charge tanks 34 and 35 are connected to the left and right discharge pipes 32, respectively. This charge tank 34.35
is provided above the suction port 10 of the metering pump 1. In addition, in the metering pump 1, a return pipe 36 is pulled out from the discharge pipe 32 to the pump body 7 on the side with a smaller discharge amount, and this return pipe 36
is connected to the suction pipe 33 of the fluid material $919. A variable angle throttle valve 37 is interposed in this return pipe 36.

Similarly to the embodiment shown in FIG. 1, the embodiment shown in FIG.
The switching valve 25 alternately controls the supply and discharge of air from the pneumatic pressure m26 to inflate and deflate the left and right diaphragms 22 alternately, sucking fluid into one of the left and right pump chambers and simultaneously sucking the fluid into the other pump chamber. Discharge 1 liter of flow from November.

The fluid material discharged from the pump chamber 24 is pumped to the suction port 10 of the metering pump 1, and at the same time, the surplus is stored in the charge tank 34, 35, and the fluid material 2 discharged from the left pump chamber A part of the fluid is circulated through the return pipe 36 and the throttle valve 37 to the fluid tank 19, and the substantial discharge amount from the pump chamber is adjusted.

On the other hand, when the pump chamber 24 is in the suction stroke, the fluid material stored in the charge tank 34, 35 is supplied to the suction port 10 of the metering pump 1. At this time, since the charge tank 34.35 is located above the suction port 10 of the metering pump 1, the fluid in this tank 34.35 is supplied under pressure to the suction port 10 due to the head difference between the charge tank 34.35 and the suction port 10. .

In this manner, the charge tanks 34 and 35 absorb pulsations within the discharge pipe 32 and enable stable supply of fluid material.

The two types of fluid materials 2 and 3, which are separately forcibly fed to the left and right suction ports 10 of the metering pump 1 in this way, are separately sucked by the metering pump 1 and discharged to the outside. The operation of this metering pump 1 will be omitted. ” Note that the charge tank in the second invention #1 also includes an accumulator. In this case, it goes without saying that the accumulator may be provided below the pump bodies 7 and 8.

〔Effect of the invention〕

According to the first aspect of the present invention, the discharge ports of a plurality of diaphragm pumps are respectively connected to the respective suction ports of a constant pump that separately discharges a fixed amount of a plurality of types of high-viscosity fluid materials, and each of the diaphragm pumps is Since each suction port is connected to a plurality of fluidic material tanks, the diaphragm pump driven by fluid pressure can reduce the size and weight of the device. Since it is non-sealing, there is less wear.
After-sales maintenance is easy and does not take much time.

According to the second aspect of the invention, the two pump chambers in the diaphragm pump can be used separately with the help of a charge tank, and only one diaphragm pump is required. Smaller size, lighter weight,
After-sales maintenance can be facilitated and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of the present invention;
FIG. 2 is a sectional view showing a second embodiment of the present invention. 1. Metering pump, 2, 3. High viscosity fluid material, 10φ.
Suction port, 15.16...Diaphragm pump, 17...
Discharge port, 18... Suction port, 19.20... Fluid material tank, 2
1・φ center rod, 22φ・diaphragm, 24・
・Pump chamber, 31...Diaphragm pump, 32-...
Discharge pipe, 33...Suction pipe, 34.35...Charge tank.

Claims (2)

[Claims] (1) At each fluid material inlet of a metering pump that separately discharges multiple types of high viscosity fluid materials in fixed amounts using volume changes,
Connect the discharge ports of multiple diaphragm pumps,
A device for quantitatively discharging multiple types of fluid materials, characterized in that suction ports of the plurality of diaphragm pumps are separately connected to a plurality of fluid fluid tanks. (2) A metering pump that discharges two types of high viscosity fluid materials separately at a constant rate by utilizing volume changes.
Inside the diaphragm pump, the left and right diaphragms connected by a center rond are alternately inflated and contracted. Discharge pipes drawn out from the left and right pump chambers are connected separately, and a charge tank is connected to each discharge pipe. Then, connect the suction pipes drawn out from the left and right pump chambers to 2
1. A device for quantitatively dispensing multiple types of fluid materials, characterized in that the device is connected to each fluid material tank separately.