JPH08216028A - Sandblasting device - Google Patents

Abstract

PURPOSE: To reduce repair cost for a cyclone separator attached to a sandblasting device by minimizing the replaced parts of a cylinder that may be broken if an abrasive or the like is blown therein. CONSTITUTION: In a sandblasting device, wherein an abrasive A spouted and dropped inside a machining chamber 53, flakes of a workpiece, and abrasive chips are sucked into a cyclone separator 55 where they are separated into reusable abrasive and wastes, the vortex generating tower of the cyclone separator 55 comprises two separable parts, i.e., a vortex generating portion 66 integrated with a suction opening, and a lower cylinder 67 connected to the lower side of the vortex generating portion 66.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to improvements in sandblasting equipment.

[0002]

2. Description of the Related Art In FIG. 2, which is a system diagram of a conventional general sandblasting apparatus, pressure air supplied from a pressure air supply source (1) is a valve operated by an operator.
By (2), the supply amount to the gun (4) in the steel plate processing chamber (3) is controlled. A processing table (5) is provided in the processing chamber (3), on which a workpiece (W) is placed or attached. The gun is fixed to a mount and sprays the abrasive (A) onto the workpiece (W). The work table (5) is provided with a fixture for the work piece,
Some include a chuck or a rotating device for rotating a workpiece.

Further, on the front wall of the processing chamber (3),
Although not shown, a work window is provided, and a side wall is provided with an entrance / exit for a workpiece and its door. A hopper (6) is provided in the lower part of the processing chamber to collect the sprayed abrasive (A) and send it to the cyclone dust collector (7).

The cyclone dust collector (7) has at least the following parts, namely, a top lid (10) having a blower (8) built therein and having an inner cylinder (9), and an abrasive suction port (11). It is composed of a vortex flow generation tower (13) which is also a hopper tank (12), and an abrasive recirculation device (14) connected to the lower end thereof. The abrasive recirculation device (14) recirculates the abrasive (A) accumulated in the hopper / tank (12) to the gun (4) by using pressurized air.
In addition, fine and light processing waste and debris of abrasives are sent to the air filter (16) from the exhaust port (15) by the air blower (8) together with the air, and then, to the filter material (17) such as a filter bag. Only the air that has been captured and collected and that has been cleaned is discharged from the exhaust port (18) into the atmosphere.

By the way, in FIG. 3 showing a horizontal section passing through the abrasive suction port (11) of the cyclone dust collector, the suction direction (D) of the abrasive is relative to the circular cross section of the vortex generating tower (13). Since it is in the direction of the cutting line, the area indicated by (P) is subjected to a particularly strong polishing action and finally has a hole and is damaged. Even with such a local damage, in the cyclone dust collector, the entire vortex flow generation tower was replaced, which was extremely uneconomical.

[0006]

SUMMARY OF THE INVENTION In view of the above problems of the prior art, the present invention requires a large amount of cost to generate a vortex even if the cyclone dust collector is locally damaged as described above. It is an object of the present invention to provide a sandblasting device that eliminates the uneconomical problem of replacing the entire tower.

[0007]

In the present invention, in order to achieve the above-mentioned object, the abrasive and the work piece peeling pieces that have been jetted and dropped in the processing chamber are sucked and introduced from the processing chamber into the cyclone dust collector. In the sandblasting device in which the reusable abrasive and the waste are separated from each other, the swirl generating tower of the cyclone dust collecting device is provided with a cylindrical body part integrated with the suction port, and a hopper connected below the cylindrical part. And a tubular body portion.

Further, in the present invention, it is preferable to install a processing chamber directly below the cyclone dust collector.

[0009]

In the present invention, the most easily worn cylinder portion including the blow-in port is formed separately from the portion that continues to the lower portion and includes the hopper, and therefore only replaces it when it is worn and damaged. Therefore, it is economical because it is not necessary to replace the entire eddy current generation tower.

Furthermore, if the processing chamber is installed directly below the cyclone dust collector, the installation area will be small and the abrasive collected in the hopper below the dust collector will reach the abrasive spraying device in the processing chamber by natural flow. Since it is supplied at a distance, it is economical because an abrasive recirculation device and a supply of compressed air for this purpose are unnecessary.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, which is a system diagram showing an embodiment of the present invention, pressure air supplied from a pressure air supply source (51) passes through a valve (52) whose supply amount is controlled by an operator. And the abrasive material injection device installed in the steel plate processing room (53)
It will be supplied to (54). To the abrasive material ejecting device (54), the abrasive material (A) is naturally flown from the hopper (56) in the cyclone dust collecting device (55) installed above the processing chamber (53) through the supply pipe (57). Are being supplied. Further, guns (58) (59) for ejecting abrasives are connected to the abrasives ejecting device (54). A processing table (60) is installed in the processing chamber (53), and an object to be processed (W) is placed or mounted thereon. The guns (58) and (59) are mounted on a pedestal so that their mounting positions can be adjusted, and spray the abrasive (A) onto the workpiece (W). Some of the above-mentioned processing tables (60) are provided with a fixture for the work piece, and some are provided with a chuck and a rotating device for rotating the work piece.

Further, on the front wall of the processing chamber (53),
Although not shown, a work window is provided, and a side wall is provided with an entrance / exit for a workpiece and its door. In the lower part of the processing chamber, a hopper (61) is used to collect the abrasive material (A) that has been jetted and dropped, and this is collected into a cyclone dust collector (55).
It is designed to be sent to the suction port (62).

The cyclone dust collector (55) is provided with at least the following parts, that is, a top cover (64) having an inner cylinder (63) and an intake port (62) similar to the intake port (11). Eddy Current Generator (66)
And a lower tube body (67) connected directly below the vortex flow generating section (66) and provided with the hopper (56) described above, and the vortex flow generating section (66) and the lower tube. The body (67) and the body (67) are assembled together to form a vortex flow generation tower (66-67). conventionally,
As mentioned above, the eddy current generation tower consists of a single unit,
A major feature of the present invention is that it is composed of two parts in this way.

Now, the abrasive sent from the hopper (61) of the processing chamber (53) to the vortex flow generating tower is sucked from the suction port (62) by the pressure of the pressure air and the suction force of the blower described later. The vortex flow generator (6
It becomes a vortex while colliding with the inner wall of 6). However, the relatively light debris such as peeled pieces of the work piece and crushed abrasives contained in the vortex are sucked out through the inner cylinder (63), and the discharge port
Sent to the air filter (69) via (65) and the inlet (68),
Here, for example, only the air that has been captured and collected by the filter material (70) such as a filter bag and has been cleaned is discharged from the exhaust port (72) to the atmosphere by the exhaust fan (71).

[0015]

As is apparent from the above description, even if the abrasive material and the work piece peeling piece discharged from the processing chamber damage the eddy current generating portion integrated with the suction port due to abrasion, it needs to be replaced. Only the eddy current generating portion is required, and it does not reach the lower cylindrical body connected directly below, which is extremely economical.

Further, if the processing chamber is installed directly below the cyclone dust collector as in the embodiment, the installation area is small, and the abrasive collected in the hopper below the dust collector is not allowed to flow into the processing chamber due to natural flow. Since it is supplied to the abrasive material spraying device at the shortest distance, it is economical because the abrasive material recirculation device and the supply of pressurized air for this purpose are unnecessary.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment of a sandblasting device of the present invention.

FIG. 2 is a system diagram of an example of a conventional sandblasting device.

FIG. 3 is a horizontal sectional view taken along line III-III in FIG.

[Explanation of symbols]

 (51) Pressure air supply source (52) Valve (53) Processing chamber (54) Abrasive sprayer (55) Cyclone dust collector (56) Hopper (57) Supply pipe (58) Gun (59) Gun (60) Processing table (61) Hopper (62) Abrasive suction port (63) Inner cylinder (64) Top cover (65) Discharge port (66) Vortex generator (67) Lower cylinder (66-67) Vortex tower (68) ) Intake port (69) Air filter (70) Filter material (71) Air blower (72) Exhaust port (A) Abrasive material (D) Blow-in direction of abrasive material (P) Range (W) Workpiece ( 7) Cyclone dust collector (8) Air blower (9) Inner cylinder (10) Top cover (11) Suction port (12) Hopper (13) Vortex generator tower (14) Abrasive recirculation device (15) Discharge port (16) ) Air filter (17) Filter material (18) Exhaust port

Claims (1)

[Claims] 1. A sand blasting device in which abrasives and work piece exfoliation pieces jetted and dropped in a processing chamber are sucked into a cyclone dust collector from the processing chamber and separated into reusable abrasives and wastes. In the above, the vortex flow generating tower of the cyclone dust collector can be assembled and disassembled from at least two parts, that is, a cylindrical part that is integral with the suction port and a cylindrical part that is connected below the cylindrical part and that is provided with a hopper. A characteristic sandblasting device.