JPH07324873A - Metal melting furnace - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to safely dissolve incombustible waste such as injection needles by high-frequency induction heating. According to the present invention, there is provided an induction coil having a storage portion substantially in the center thereof, and an oscillation circuit for supplying a high-frequency current to the induction coil. A storage container formed of heat-resistant porcelain is detachably attached to the storage portion, and the metal to be melted is stored and melted in the storage container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal melting furnace for melting non-combustible metal waste such as injection needles by high frequency induction heating.

[0002]

2. Description of the Related Art A melting furnace in which a metal to be melted is arranged at the center of a cylindrical induction coil and a high-frequency current is applied to the induction coil to melt the metal to be melted is disclosed in, for example, Japanese Patent Laid-Open No. 6-109372.
It has been known from the publication such as Japanese Patent Publication.

On the other hand, in recent years, incinerators for incinerating waste generated in cafeterias, restaurants, hospitals and the like have been widely used, but injection needles and the like, which are mainly used in medical institutions, are incinerated even if incinerated by the incinerator. There is a problem in that it remains as an incombustible substance on the bottom of the container and is difficult to dispose of.

Therefore, doctors and nurses wear rubber gloves to remove the injection needle from the syringe and put it in a vinyl bag or the like for disposal.

[0005]

However, when the injection needle is manually removed, there are the following problems. (1) The needle may pierce the glove and stick it into the hand, and blood attached to the needle may enter the body of the processor. (2) There is a risk that an unscrupulous person may take out the needle after disposal and misuse it. (3) The needle breaks the plastic bag and is difficult to handle during disposal. (4) It is difficult to distinguish an unused injection needle taken out during treatment preparation from a used injection needle. (5) There is no other use after the needle is discarded.

[0006]

DISCLOSURE OF THE INVENTION The present invention comprises an induction coil having a storage portion substantially in the center thereof, and an oscillating circuit for supplying a high frequency current to the induction coil, and a metal to be melted is disposed in the storage portion. In this case, a container for storage formed of heat-resistant porcelain is detachably attached to the container, and the metal to be melted is stored and melted in the container for storage.

Further, according to the present invention, the induction coil is constructed by spirally winding a hollow conductive pipe, and cooling water is passed through the induction coil.

Further, according to the present invention, a metal storage case for storing the metal to be melted is arranged in the storage container, and the injection needle of the syringe is hooked on the inlet of the storage case for feeding the metal to be melted. It is formed by forming a keyhole portion to be detached.

[0009]

[Operation] Insert the tip of the syringe into the keyhole of the storage case,
Hook the large diameter part of the injection needle into the keyhole part, remove the injection needle and drop it into the storage case, and when the injection needle in the storage case reaches a predetermined amount, store the storage case in the storage container of the storage part, By supplying a high frequency current to the induction coil from the oscillation circuit, the magnetic force lines induced in the induction coil cause the storage case and the injection needle to generate heat and melt.

Further, when a high frequency current is applied to the induction coil to heat it, water is passed through the induction coil to cool the coil, so that the coil itself due to overheating of the induction coil and members disposed around the coil can be cooled. Prevent damage etc.

[0011]

EXAMPLE An example of the present invention will be described first with reference to FIG. 1. (1) is a melting furnace main body, and a hollow conductive metal pipe is formed in a substantially hollow cylindrical shape at a substantially central portion in an outer case (2). An induction coil (4) having a storage part (3) wound around it and arranged in a substantially central part is arranged, and a support base (5) is installed below the storage part (3). A storage case in which a heating case (6) made of reinforced ceramic or the like is fixed on the top of the container, and the inside of the heating case is made of heat-resistant porcelain and the insertion port (7) is opened on the upper surface.
(8) is detachably stored.

Further, at both ends of the induction coil (4), as shown in FIG.
As shown in the figure, the power supply terminals (9) and (9) are provided, and the lead wires (11) and (11) connected to the high frequency oscillator (10) are provided to the power supply terminals.
And a water supply pipe (12) connected to a water source such as tap water, and a drain pipe (13) for discharging water passing through the induction coil (4) is connected to the other end. There is.

The high frequency oscillator (10) includes a voltage regulator circuit (15), a rectifier circuit (16), an oscillator circuit (17) and a frequency converter in addition to the three-phase three-wire type power source (14) shown in FIG. The circuit (19) is mainly connected, and the induction coil (4) is connected to the oscillation circuit (17) through the lead wires (11) and (11).

A fan motor (20) for cooling the rectifier circuit (16) and the like, and an operation circuit (21) are connected to the power source (14).

In FIG. 1, (22) is a storage case which is detachably stored in the storage container (8) through the insertion opening (7).
For example, as shown in Fig. 4, it is made of magnetic metal such as iron or stainless steel in the shape of a can, and the insertion port (2
3) and the large diameter part (25) (2) of the injection needle (24) (24)
5) ・ ・ Keyhole-shaped slot made of a groove (26) narrower than
(27) is open.

In the embodiment, the input port 27 is formed in the shape of a keyhole, but the present invention is not limited to this. For example, the groove part 26 is formed continuously with a square opening. May be.

Thus, when the syringe is used up, the injection needle (24)
(24) ・ ・ After inserting from the tip of the storage case (22) to the large diameter part (25) from the insertion port (27), move the syringe horizontally to increase the large diameter part (25) (25) ・ ・Are hooked on the groove portions (26), (26), ..., and the syringe is pulled up, and the injection needles (24), (24) ... Are separated from the syringe and fall into the storage case (22).

When a certain amount of the injection needles (24), (24), ... Are stored in the storage case (22), the storage case (22) is inserted into the storage container (8) as shown in FIG. After storing from the mouth (7), the operating part (21) of the high frequency oscillator (10) is operated to activate the oscillation circuit (17) and the like, and a high frequency current is applied to the induction coil (4) and Cooling water is passed through the storage case (22) and the needle (2) stored in this storage case.
4) Heat the (24) ...

When the melting is completed, the induction coil
The application of the high frequency current to (4) is stopped, the storage container (8) is taken out from the heating case (6), the metal lumps accumulated at the bottom of the storage container (8) are discarded, and then the storage container (8 Return 8) to the heating case (6).

[0020]

According to the structure of the present invention, a container for storage formed of heat-resistant porcelain is detachably attached to the container for placing and heating the metal to be melted in the induction coil, and the container for storage is covered with the container. By storing and melting the molten metal, it is possible to safely dispose of non-combustible waste such as an injection needle with a relatively simple structure.

Further, by forming the induction coil by a pipe and cooling water is passed through the coil to cool the induction coil,
For example, it can be installed in a patient's room or the like and the injection needle or the like can be immediately and safely treated at that location without generating noise from the fan.

Further, by forming a keyhole portion for separating the injection needle from the syringe in the storage case for storing the metal to be melted, a tool for separating the injection needle is unnecessary, and the injection needle can be safely separated from the syringe. At the same time, the storage case can be dissolved as it is, and the injection needle can be processed relatively inexpensively.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a schematic circuit diagram showing an embodiment according to the present invention.

FIG. 4 is a perspective view of the storage case.

[Explanation of symbols]

 3 Storage Part 4 Induction Coil 8 Storage Container 17 Oscillation Circuit 22 Storage Case 27 Inserting Port

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B09B 3/00 ZAB F23G 7/00 102 // F27D 3/12 Z (72) Inventor Takashi Matsuda Tottori Sanchome, Minamiyoshikata 3-chome, Tottori-shi, Tottori Prefecture Sanyo Electric Co., Ltd. (72) Inventor Mitsuhiko Yamane 3-201 Minamiyoshikata, Tottori-shi, Tottori Sanyo Electric Co., Ltd. (72) Masami Fukumoto Minamiyoshi, Tottori-shi, Tottori San 3-chome 201 Tottori Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. An induction coil having a housing in a substantially central portion and an oscillating circuit for supplying a high-frequency current to the induction coil, wherein a metal to be melted is placed in the housing to melt the metal. A metal melting furnace characterized in that a container for storage formed of heat-resistant porcelain is detachably attached to the container, and a metal to be melted is stored and melted in the container for storage. 2. The metal according to claim 1, wherein the induction coil is formed by spirally winding a hollow conductive pipe, and cooling water is passed through the induction coil. melting furnace. 3. A metal storage case for storing the metal to be melted is arranged in the storage container.
The metal melting furnace according to claim 1 or 2. 4. The metal melting furnace according to claim 3, wherein a key hole portion for hooking an injection needle of a syringe and detaching the injection hole is formed at a charging port for charging the metal to be melted of the storage case.