JPS60204403A - Filler for high-consistency composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filling device that feeds a predetermined amount of a composition (hereinafter referred to as a "high consistency composition") that is solid or semi-fluid at room temperature, such as asphalt, tar, or pitch, into bags.

For example, asphalt has traditionally been transported in drum cans, but each can weighs approximately 2,004 yen, making it inconvenient to handle and requiring time and effort to dispose of the drum cans after use. .

One way to solve these problems is to fill paper bags or synthetic resin bags with asphalt. The present inventors also proposed a method of filling a high-consistency composition while cooling a synthetic resin bag mainly made of polyethylene, which has a softening point lower than the temperature at which the high-consistency composition achieves the required fluidity. (Patent Application No. 57-222626). Even if it collapses, it is necessary to send out a constant amount of a highly viscous composition under considerable pressure.

The present invention has been made in view of the above points, and an object of the present invention is to provide a novel filling device that has a simple structure and always delivers one foot of a high-consistency composition precisely and with tensile pressure. It consists of a hopper that stores the melted composition with a still consistency, a metering and feeding mechanism stored in the lower part of the hopper, and an injection nozzle connected to the mechanism. The metering and delivery mechanism includes a slide valve that opens and closes the delivery side of the injection nozzle, a cylinder that is slidably housed in the hopper opposite to the slide valve, and that is slidably fitted into the cylinder. The cylinder is fully equipped with a piston, the piston is retracted with respect to the slide valve, and the cylinder has a volume that can be filled with a predetermined amount of the still-consistent composition in the cylinder forward position, and the cylinder, piston, and slide valve are connected to each other. They are characterized in that they are operated in conjunction to cause the cylinder to scoop up the highly concentrated composition in the hopper and the piston to discharge the composition in the cylinder.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

In the figure, a filling device 1 includes a hopper 2 for storing a high-consistency composition, a metering and feeding mechanism 8 housed in the lower part of the hopper 2, and an injection device connected via a connecting pipe 5 connected to the metering and feeding mechanism 8. and a nozzle 4.

The hopper 2 has several removable upper lids 6, and outer jackets 11 are attached at intervals around the periphery and bottom of the hopper as heat insulating means 1G, and a jacket 12 is formed between them. Let it be distributed. However, this jacket 12 may be replaced with an appropriate heat retaining device such as an electric heating coil. The upper lid 6 is connected by a supply pipe 14 to a cooling device 18 that cools the supplied high consistency composition to a required temperature. G1 is a cooling device 1 for cooling the molten high temperature high consistency composition.
The gear pump (■) supplied to the pump 8 is an air bleed valve provided as necessary.

The metering and sending mechanism 8 consists of a metering cylinder 5 that is reciprocally movable, a piston 16 housed in the cylinder 15, and a slide valve 17 that opens and closes the feeding side of the connecting pipe 5. It is installed through the lower side wall of the hopper 2 so as to move forward and backward relative to the valve 17. The cylinder 5 and the piston 16 are connected to piston rods 18a, 19a of an actuating cylinder 18, 19, respectively. Reference numeral 20 denotes a fitting hole formed in the lower sacroside wall of the hopper 2 into which the tip of the cylinder 74, /15 is fitted.

As shown in the figure, when the cylinder 5 is in the forward position and the piston 16 is in the backward position, the volume A inside the cylinder 15 is the required supply amount (for example, 10~).
The cylinder 5 is moved in and out of the bottom of the hopper 2.

The slide valve 17 is as shown in FIG.
A through hole 21 having the same diameter as the connecting pipe 5 is formed to be offset to one side and is connected to the piston rod 22a of the actuating cylinder 22 so as to open and close a passage to the connecting pipe 5. Although the example shown in the figure shows an example in which two measuring and sending mechanisms 8.8 are housed in the lower part of the hopper 2, it is of course possible to have only one.

As the injection nozzle 4, one having a well-known structure is applied as appropriate. However, it is preferable to reliably shut off the nozzle opening after the completion of supplying a predetermined amount. The illustrated example is equipped with means for opening and closing the nozzle opening using a solenoid 4a.

In the figure, 28 is a return pipe provided for safety reasons, and is provided to extract the high consistency composition remaining in the hopper 2 and the connecting pipe 5 at the end of the operation, and 24.25
is an on-off switching valve provided in the pipe line 28, and G2 is a return gear pump, which returns the water to the cooling device 13, for example.

26 is a slide base that guides the reciprocating movement of the measuring cylinder 5, and 27 is a support bracket that supports one end of the operating cylinders 18 and 19.

In the above configuration, first, the cylinder 5 is located at the chain line position 15'.
In addition, the pistons 16 are respectively lowered to the solid position by the actuating cylinders 18, 19, and the slide valve 17 is held in the closed position.

In this state, the hopper 2 is filled with the molten high-consistency composition whose temperature has been lowered to the required temperature by the cooling device 1B. Next, the cylinder 1 is moved forward by moving the cylinder 15 forward.
5 scoops out the composition, fits the tip into the fitting hole 20, blocks the inside of the cylinder from the inside of the hopper, and moves the slide valve 17 to open it. After that, the piston 1G is moved forward to reach the leading leg position 16', and the cylinder 15 is moved forward.
A predetermined amount of the high consistency composition stored in the injection nozzle 4
It is pushed out to the side and supplied into the bag W from the nozzle 4.

In this case, the two metering and dispensing mechanisms 8.8 may be operated mutually, but since injection takes time, it is preferable to operate them simultaneously. Next, the slide valve 17 is operated to block the passage and the cylinder 15 and piston 16 are moved back to fill the hopper 2 to the bottom with the high consistency composition, thereby completing preparations for the next injection.

As described above (according to the present invention), when the cylinder housed in the hopper is in the forward position and the piston fitted in the cylinder is in the backward position, a predetermined amount of the high consistency composition is injected into the cylinder. The cylinder is operated in conjunction with a slide valve for opening and closing a passage for the piston and the injection nozzle, so that a portion of the high consistency composition in the hopper is scooped out by the cylinder and measured, and the piston is moved to the piston. This makes it possible to efficiently and reliably extrude even high-consistency compositions in a short period of time.

[Brief explanation of the drawing]

Figure 1 is an overall front view, Figure 2 is a vertical sectional view of the main parts, Figure 8 is a plan view of the living body, Figure 4 is a right side view of Figure 1, and Figure 5 is a front view of the entire body.
The figure is a plan view of the slide valve. 160. Filling device 200. Hopper B11. Measuring feed mechanism 400. Injection nozzle 100. , heat retention means 1666. Cylinder 1666. Piston 1716. Slide valve 18+19.221 Operating cylinder 2 (10,, Fitting hole Ao,, Cylinder volume Patent applicant Showa Mizosei Kogyo Co., Ltd.

Claims (1)

[Claims] It consists of a hopper that stores the molten high-consistency composition, a metering and feeding mechanism stored in the lower part of the hopper, and an injection nozzle connected to the mechanism, and the metering and feeding mechanism opens and closes the feeding side of the injection nozzle. a slide valve that
A cylinder is slidably housed in a hopper facing the slide valve, and a piston is slidably fitted into the cylinder, and the piston moves backward with respect to the slide valve, and the cylinder moves forward. In the position, the cylinder has a volume filled with a predetermined amount of the high consistency composition, and the cylinder, the piston, and the slide valve are operated in conjunction with each other, so that the cylinder measures the high consistency composition in the hopper. 1. A device for filling a high-consistency composition, characterized in that the composition is fed into a cylinder by a piston.