JP2008050007A - Container discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container discharging device capable of quantitatively and continuously taking out a powder and granular material from an outlet of a container by a relatively simple structure. <P>SOLUTION: The container discharging device includes a butterfly valve device 10 fitted to the outlet 5 of the container storing the powder and granular material, and capable of opening and closing the outlet by rotating a valve stem 8 having a valve plate 6 attached thereto, a valve vibrating means 12 vibrating the valve plate and the valve stem of the butterfly valve device, and an air jetting means 14 intermittently jetting air toward the butterfly valve device and the outlet. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a container discharge device that is provided at a discharge port of a container that stores powder particles and that can take out the powder particles stored quantitatively and continuously with a simple structure.

Containers that are containers equipped with a powder inlet and outlet are widely used as means for transporting powder, batch weighing, mixing, storage, and the like. There are a wide variety of powders and granules, such as pharmaceuticals, foodstuffs, plastics, and building materials.

A typical container has a main body with an inlet at the top of a cylindrical vertical mold, an upper lid that is a lid for the inlet, a funnel-shaped bottom with an outlet at the lower end, and an open / close at the outlet And a discharge device having a freely provided valve body. A typical example of the valve body includes a well-known butterfly valve that rotates a plate-shaped valve body inscribed in the discharge port around an axis to adjust the opening of the discharge port.

As an improved discharge device that facilitates the discharge of powder particles by opening and closing the valve body and preventing the powder particles from adhering to and remaining on the valve body part, the valve body is formed in a conical shape and the bottom surface is Discharge that opens and closes the discharge port by operating the shaft member from the outside of the container so that the shaft member connected to the valve body on the inside of the container can come into contact with and separate from the discharge port. An apparatus has been developed and put into practical use (for example, see Patent Document 1).
JP 2003-54758 A

However, the conventional container discharging apparatus having the above-described configuration has a problem that is desired to be improved as follows.

In other words, the well-known butterfly valve has a simple structure consisting of a plate-shaped valve body and a valve shaft that supports the valve body, and is accommodated in the container by rotating the valve shaft and adjusting the opening of the discharge port by the valve body. The feed rate and feed rate, which is the discharge rate of the treated granulate, can be controlled.

However, in general, the granular material has poor fluidity, and if the opening of the discharge port is reduced by a plate-like valve body in order to slow down the discharging speed, the granular material hardly flows out. Furthermore, since the valve body is structured to rotate around the valve shaft at the discharge port portion, only the granular material in the valve body portion is discharged, and the granular material in the container is fixed without being discharged. Cheap. In particular, powder with poor fluidity will not flow out just by opening the valve.

On the other hand, in the improved discharge device provided with the conical valve body, the valve body and the shaft member connected thereto move up and down in the container according to the opening and closing of the discharge port, so that the granular material in the container is stirred. It is easy to control the discharge speed of the granular material from the discharge port.

However, since the discharge device provided with the conical valve body needs to be installed exclusively in each individual container and is not versatile, it is used for relatively limited applications from the economical aspect. Also, this discharge device has a relatively complicated structure with a conical valve body and shaft member installed in the container, so when cleaning particles adhering to the container or handling dissimilar particles It is troublesome to clean the inside of the container that is necessary.

The present invention has been made in view of the above-mentioned facts, and its technical problem is that the container discharge device can take out the granular material from the discharge port of the container quantitatively and continuously with a relatively simple structure. Is to provide.

According to the present invention, as a container discharge device that solves the above technical problems, a butterfly valve that opens and closes the discharge port by rotating a valve shaft to which a valve plate is attached is provided at the discharge port of a container that contains powder particles. And a valve exciting means for vibrating the valve plate and the valve shaft of the butterfly valve device, and an air injection means for injecting air intermittently toward the butterfly valve device and the discharge port. A container discharge device is provided.

Preferably, the valve vibration means is attached to the valve shaft. The air injection means includes a cylindrical portion connected to the discharge port provided with the butterfly valve device, and a plurality of air injection ports opened on the inner peripheral surface of the cylindrical portion. The plurality of air injection ports include a valve direction injection port that injects air toward the valve plate of the butterfly valve device, and a circumferential direction injection port that is directed substantially in the circumferential direction of the inner peripheral surface.

Furthermore, the air injected from the valve direction injection port is injected in the direction in which the axis of the valve shaft extends. Further, the air injection port is provided with a net member made of porous sintered metal. Further, the butterfly valve device is attached to the discharge port of the container, and the air injection means is attached to the butterfly valve device so as to be detachable.

According to the container discharge device configured in accordance with the present invention, the butterfly valve having a simple structure is used for opening and closing the discharge port, the valve vibration means for vibrating the butterfly valve is provided, and air is further injected toward the discharge port. Air injection means is provided. Therefore, because the vibration of the valve plate and the jet air can prevent the powder particles from adhering to the valve plate and sticking in the container, the powder particles can be removed from the container outlet with a relatively simple structure. Quantitatively, continuously and smoothly.

Hereinafter, a container discharging apparatus constructed according to the present invention will be described in more detail with reference to the accompanying drawings illustrating preferred embodiments.

A description will be given with reference to FIG. 1 which is a side view of a state in which the container discharge device is attached to the container, and FIG. 2 which is an enlarged detailed view of the container discharge device portion of FIG. The container discharge device generally indicated by number 2 is provided at the discharge port 5 at the lower end of the container 4 that accommodates the granular material, and opens and closes the discharge port 5 by rotating the valve shaft 8 to which the valve plate 6 is attached. The butterfly valve device 10, the vibrator 12 as a valve exciting means for vibrating the valve plate 6 and the valve shaft 8 of the butterfly valve device 10, and the air connected to the butterfly valve device 10 toward the butterfly valve device 10 and the discharge port 5. Air injection means 14 for injecting intermittently,

The other end of the air injection means 14 is connected via a chute 16 to a measuring container or a supply machine (none of which is shown in the figure) for supplying and measuring powder particles.

The container 4 itself is a well-known container, and is a tubular vertical main body 4a whose upper part is opened as an inlet, an upper lid 4b that closes the inlet, and a funnel-like body provided with the outlet 5 at the lower end. A bottom portion 4c is provided, and an outer peripheral portion of the bottom portion 4c is supported by a support frame 4d.

A description will be given mainly with reference to FIG. The butterfly valve device 10 includes an upper tube portion 10a connected to the discharge port 5, a lower tube portion 10b connected to the air injection means 14, and a valve plate support portion 10c between the upper tube portion 10a and the lower tube portion 10b. I have.

An annular flange F is formed at each end of the upper tube portion 10a and the lower tube portion 10b, and is formed in each of the discharge port 5 and the air injection means 14 by an annular ferrule joint 18 having a well-known V-shaped cross section. It is connected to the annular flange F so as to be freely disassembled.

The valve plate 6 itself is a well-known butterfly valve having a disk shape. Therefore, the description is omitted. The valve shaft 8 to which the valve plate 6 is attached is rotatably attached to the valve plate support portion 10c around the axis X, and both end portions are released outward. A vibrator 12 of the valve vibration means is connected to one end (left end in FIG. 2) of the valve shaft 8, and a valve operation means 20 for rotating the valve shaft is connected to the other end (right end in FIG. 2).

The vibrator 12 is attached only to the valve shaft 8 by a bracket 22 in a screw hole at the end of the valve shaft 8 in a direction orthogonal to the axis X of the valve shaft 8. The vibrator 12 is a well-known one that operates by compressed air. By adjusting the throttle 12a provided at the end and changing the air pressure, the vibration frequency can be adjusted within a range of 5000 to 9000 per minute, for example.

Thus, by operating the vibrator 12 and vibrating the valve shaft 8, the valve plate 6 attached to the valve shaft 8 can be vibrated at an arbitrary frequency.

The valve operating means 20 includes a manual operation handle 24 attached to the end of the valve shaft 8 so as to extend in a direction perpendicular to the axis X, and an electric actuator 26 connected to the manual operation handle 24 and attached to the handle 24 so as to be able to drive the handle 24. I have.

The electric actuator 26 is attached to the support frame 4 d (FIG. 1) of the container 4 via a bracket 28. The electric actuator 26 may be a well-known one, and rotates its output shaft at an arbitrary angle by an electric signal from a controller (not shown) to hold its position.

The air injection means 14 will be described with reference to FIG. The air injection means 14 is directed toward the valve plate 6 of the butterfly valve device 10, which is a cylindrical portion 14 a connected to the butterfly valve device 10, and a plurality of air injection ports opened on the inner peripheral surface of the cylindrical portion 14 a (arrows). Z) A pair of valve direction injection ports 14b, 14b disposed 180 ° apart in the circumferential direction for injecting air, and a valve direction injection for injecting air toward the substantially circumferential direction of the inner peripheral surface (arrow Y). A pair of circumferential injection ports 14c and 14c are provided between the ports 14b and 14b.

Each of the valve direction injection ports 14b and 14b is positioned such that the direction of the air to be injected (arrow Z) is the direction in which the axis X of the valve shaft 8 extends (FIG. 3).

Each of the air injection ports 14b, 14b, 14c, and 14c is provided with a mesh member 14d joined to the inner peripheral surface of the cylindrical portion 14a. The net member 14d is formed in a plate shape from porous sintered stainless steel, and allows the jet air to pass therethrough, thereby preventing the backflow of the granular material.

Each of the air injection ports 14b, 14b, 14c, and 14c is connected to a compressed air source 30 (FIG. 1) by a pipe 32, and pressurized air is controlled and guided so as to be intermittently controlled.

The operation of the container discharge device 2 as described above will be described.

The container discharge device 2 includes a butterfly valve device 10 having a relatively simple structure for opening and closing the discharge port 5 of the container 4, and includes a valve vibration means 12 that vibrates the valve plate 6, and further includes the valve plate 6 and the discharge port. Air injection means 14 for injecting air toward 5 is provided. Accordingly, since the valve plate 6 is vibrated and sprayed air is blown onto the valve plate 6 and its surroundings, the granular material adheres to the valve plate 6 from the small opening to the large opening of the discharge port 5 and in the container 4. Adherence can be prevented, and a granular material can be taken out quantitatively, continuously and smoothly with a relatively simple structure.

In addition, when injecting air with the air injection means 14, if the granular material supply machine etc. which are connected to the chute 16 are made into a closed state, the granular material inside the container 4 will be fluidized more effectively by the injected air. Can do.

Since the vibrator 12 as the valve vibration means is attached only to the valve shaft 8, it is easy to install and the discharge device 2 can be compactly assembled.

The air injection means 14 includes a valve direction injection port 14b for injecting air toward the valve plate 6 of the butterfly valve device 10, which is a plurality of air injection ports opened on the inner peripheral surface of the cylindrical portion 14a, and an inner peripheral surface. Since the circumferential injection port 14c directed in the circumferential direction is provided, it is possible to prevent adhesion of powder particles to the valve plate 6 and adhesion within the container 4 and around the valve plate 6.

And since the air injected toward the valve plate 6 from the valve direction injection port 14b is directed in the direction in which the axis X of the valve shaft 8 extends, the air passes through the opening portions of the valve plate 6 and the discharge port 5 to the container. 4 is effectively injected.

Furthermore, since the air injection ports 14b and 14c are each provided with the net member 14d made of porous sintered metal, it is possible to effectively stop the powder particles from flowing into the injection ports.

In the container discharge device 2, the butterfly valve device 10 is attached to the discharge port 5 of the container 4, and the air injection means 14 is attached to the butterfly valve device 10 so as to be detachable, for example, by a ferrule joint 18 so as to be detachable. Each can be removed and cleaned easily.

This detachable container discharge device 2 can be easily attached to and detached from different containers having discharge ports 5 formed in the same shape, so that a container having a conical valve body provided exclusively in the container Compared to the discharge device, it can be used for general purposes and is economical.

1 is a side view of a container equipped with a container discharge device constructed in accordance with the present invention. The enlarged view of the container discharge apparatus shown in FIG. The top view of the air injection means seen in the AA arrow direction of FIG.

Explanation of symbols

2: Container discharge device 4: Container 5: Discharge port 6: Valve plate 8: Valve shaft 10: Butterfly valve device 12: Vibrator (valve vibration means) 14: Air injection means

Claims (7)

A butterfly valve device that opens and closes the discharge port by rotating a valve shaft to which a valve plate is attached, and a valve that vibrates the valve plate and the valve shaft of the butterfly valve device. A container discharging apparatus comprising: an oscillating means; and a butterfly valve device and an air injection means for injecting air intermittently toward the discharge port. The container discharging apparatus according to claim 1, wherein the valve vibration means is attached to the valve shaft. Air injection means
A cylindrical part connected to a discharge port provided with a butterfly valve device;
It has a plurality of air injection openings opened on the inner peripheral surface of this cylindrical portion,
The container discharging apparatus according to claim 1. Multiple air jets
A valve direction injection port for injecting air toward the valve plate of the butterfly valve device;
A circumferential injection port directed substantially in the circumferential direction of the inner circumferential surface,
The container discharging apparatus according to claim 3. Air injected from the valve direction injection port is injected in the direction in which the axis of the valve shaft extends,
The container discharging apparatus according to claim 4. The air injection port has a mesh member made of porous sintered metal,
The container discharging apparatus according to any one of claims 3 to 5, wherein The butterfly valve device is attached to the discharge port of the container, and the air injection means is attached to the butterfly valve device, respectively.
The container discharging apparatus according to any one of claims 1 to 6, wherein

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