JP2006043528A - Vacuum type mixer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum type mixer stirring and/or kneading a material to be treated containing powder and liquid while preventing powder scattered in a tank from invading the vacuum pump. <P>SOLUTION: A hood (4) covering the opening of a tank (3) is arranged around a stirring head (2). A recovery chamber (9) is formed in a suction pipe (7) connecting between the inside of the hood (4) and a vacuum pump (6). The chamber (9) includes an umbrella-formed powder-dropping buffer plate (18) within it. The chamber (9) is formed so that its inside can be seen through. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vacuum mixer that performs processing such as stirring and kneading while degassing a processing material containing powder and liquid.

The processing material is stored in the tank, the opening of the tank is closed with a hood, the stirring blade is rotated while the tank is sucked with a vacuum pump, and the vacuum is designed to perform various processing such as stirring processing and kneading processing. A type mixer is used (see, for example, Patent Document 1). The suction in the tank is performed to prevent air bubbles from entering the processing material. When the processing material is a solid / liquid kneading or stirring device containing powder and liquid, the stirring blade is operated. In the initial stage, a part of the powder scatters into the extra space in the tank and is sucked into the vacuum pump through the suction pipe, and the powder accumulates in the vacuum pump, which reduces the function of the vacuum pump. In some cases, the vacuum pump had to be stopped. In addition, when a large amount of powder is sucked, the composition of the charged material becomes unstable, and even if the powder is sucked through the suction pipe, the suction amount and its state are not known from the outside. It was also difficult to adjust the suction speed by the vacuum pump so that the powder was not sucked by the vacuum pump.
JP 2004-73965 A (0001, FIG. 1)

  The problem to be solved by the present invention is that a processing material containing powder and liquid is put into a tank, and the tank is sealed and a stirring blade is rotated while sucking with a vacuum pump to perform processing such as stirring and kneading. By providing a vacuum mixer that can easily and economically obtain a structure in which the powder scattered in the tank is not sucked into the vacuum pump and the state of the powder flowing through the suction pipe can be understood. is there.

  According to the present invention, a processing blade containing powder and liquid is put into a tank, the opening of the tank is covered with a hood, the inside of the tank is hermetically sealed and sucked with a vacuum pump and inserted into the tank. In a vacuum mixer in which the processing material is stirred and kneaded by rotating the tank, a collection chamber is formed in the middle of the suction pipe connecting the vacuum pump and the tank, and the tank side connection port of the suction pipe leading to the tank side And a suction pipe connecting to the vacuum pump side, the pump side connection port is opened in an opposing state in the recovery chamber, a buffer plate is formed in front of the tank side connection port, and the powder that has entered the recovery chamber is It is to provide a vacuum mixer which is recovered by being brought into contact with a buffer plate.

  Further, according to the present invention, there is provided the vacuum mixer in which the buffer plate is formed in an umbrella shape, the body of the recovery chamber is made of a transparent material, and the recovery chamber is provided on a side surface of a stirring head capable of moving up and down. Provided.

  The present invention is configured as described above, and a recovery chamber is formed in the middle of a vacuum pump that sucks the inside of the tank and a suction pipe that communicates with the inside of the tank, and the tank side connection port and the pump side connection port of the suction pipe are connected to the recovery chamber. A buffer plate is formed in front of the tank side connection port, and the powder that has entered the recovery chamber is recovered by contacting the buffer plate. The collected powder enters the recovery chamber from the tank side connection port, falls on the buffer plate, and is reliably recovered in the recovery chamber. At this time, the buffer plate is formed in an umbrella shape, and the tank side connection port is opened. By positioning it at the center, the powder receives a uniform pressure and falls uniformly into the recovery chamber, wraps around the outer periphery of the buffer plate, and connects to the pump side connection port. Flowing amount of the powder can be a cause as much as possible reduced, without reducing the ability of the vacuum pump, the composition of the feed material can be stabilized.

  Further, when the inside of the recovery chamber can be seen through, the state of evacuation of the powder sucked through the suction pipe can be understood, and the suction speed of the vacuum pump can be adjusted according to the state. In addition, by providing the recovery chamber on the side of the elevating and lowering agitation head having the hood and the agitation blade, the configuration can be obtained easily and economically, and it can be easily attached to a conventional vacuum mixer. Can do.

  The drawings show an embodiment of the present invention. The vacuum mixer body (1) has a stirring head (2) that can be raised and lowered, and the opening of the tank (3) is sealed in the stirring head (2). A hood (4) that can be covered in a state, a stirring blade (not shown) provided in the hood and inserted into the tank (3), a motor (5) for driving the stirring blade, and the like are provided. As is well known, various types of blades are used as the stirring blade depending on the purpose of the treatment.

  A vacuum pump (6) is provided on the side of the main body (1), and the vacuum pump (6) and the inside of the hood (4) are communicated with each other by a suction pipe (7). The suction pipe (7) is provided along the side surface of the agitation head (2), and a part thereof is formed by a flexible hose (8) so as to follow up and down of the agitation head (2). (9) is provided.

  As shown in FIG. 3, the recovery chamber (9) includes a cylindrical chamber body (10), an end plate (12) that contacts both ends of the chamber body (10) via a sheet packing (11), (13) and a stay (14) for connecting the end plates (12) and (13), preferably configured so that the inside can be seen through. In the embodiment shown in the figure, the chamber body (10) is formed of a transparent material such as a glass material or a plastic material. However, a part of the body may be made transparent, or the end plates (12), (13). It is also possible to form a part or the whole of a transparent material.

  In the recovery chamber (9), a tank-side connection port (15) of a suction pipe that communicates with the tank and a pump-side connection port (16) of a suction pipe that communicates with the vacuum pump open in an opposing state. A buffer plate (18) is provided in front of the open end (17) of the tank side connection port (15). The buffer plate (18) can be formed in various shapes and structures. Preferably, the buffer plate (18) is formed in an umbrella shape so that the opening end (17) is located on the inner surface of the central portion, and a support piece formed on the back surface. It is supported by the upper end plate (12) at (19). In the embodiment shown in the figure, the support piece (19) is composed of four plate-like bodies, but the number and shape may be appropriately formed.

  The opening angle of the umbrella-shaped buffer plate (18) is about 80 ° to 100 °, preferably about 90 °. In FIG. 3, the opening end (17) enters above the lower edge (20). It is good to provide. The opening end (21) of the pump side connection port (16) is located near the top of the umbrella shape.

  The lower end plate (13) is provided with an outlet (22) for taking out the powder recovered in the recovery chamber (9). The outlet (22) is stirred and kneaded. When the processing such as the above is finished, the valve (23) is opened.

  For processing such as stirring and kneading, the stirring head (2) is raised, the opening of the tank (3) is opened, and a processing material containing powder and liquid is charged into the tank (3). The stirring head (2) is lowered, and the hood (4) is brought into contact with the opening of the tank (3) to make the inside of the tank sealed. When the vacuum pump (6) and the stirring blade are driven, the processing material in the tank is stirred and kneaded in a negative pressure state, and the powder scattered in the extra space of the tank is collected in the recovery chamber (9). Then, it falls on the buffer plate by gravity and is deposited on the end plate (13) of the recovery chamber (9). When the processing is completed, the valve (23) of the outlet (22) is opened, and the powder may be recovered from the recovery chamber (9).

The front view which shows one Example of this invention. Part side view. Sectional drawing of a collection | recovery chamber.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mixer body 2 Stirring head 3 Tank 4 Hood 6 Vacuum pump 7 Suction pipe 9 Collection chamber 10 Chamber body 12, 13 End plate 15 Tank side connection port 16 Pump side connection port 18 Buffer plate 22 Extraction port

Claims (9)

  The processing material containing powder and liquid is put into the tank, the opening of the tank is covered with a hood, the inside of the tank is sealed, and the stirring blade inserted in the tank is rotated by the vacuum pump and the above processing is performed. In a vacuum mixer that stirs and kneads the material, a recovery chamber is formed in the middle of the suction pipe that connects the vacuum pump and the tank, and leads to the tank side connection port of the suction pipe that leads to the tank side and the vacuum pump side The suction side pump side connection port of the suction pipe is opened in an opposing state in the recovery chamber, a buffer plate is formed in front of the tank side connection port, and the powder that has entered the recovery chamber is brought into contact with the buffer plate. A vacuum mixer characterized in that it is recovered.   The vacuum mixer according to claim 1, wherein the recovery chamber is provided with an outlet for taking out the powder.   The vacuum mixer according to claim 1 or 2, wherein the buffer plate is formed in an umbrella shape.   The vacuum mixer according to claim 3, wherein the opening angle of the umbrella-shaped buffer plate is 80 ° to 100 °.   The vacuum mixer according to claim 3, wherein the opening angle of the umbrella-shaped buffer plate is 90 °.   The vacuum mixer according to claim 1, wherein the collection chamber is configured so that the inside can be seen through.   The vacuum mixer according to claim 1, wherein the recovery chamber includes a cylindrical main body and end plates that are in contact with both ends of the main body.   The vacuum mixer according to claim 7, wherein the main body is formed of a transparent material.   The vacuum mixer according to any one of claims 1 to 8, wherein the hood and the stirring blade are provided in a stirring head that can be moved up and down, and the suction pipe and the recovery chamber are provided along a side surface of the stirring head.

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