Dust collector with cyclone

Abstract

To provide a dust collector with a cyclone excellent in separation and recovery capacity of miniaturizable dust.SOLUTION: A dust collector with a cyclone includes one cyclone, a hopper for storing dust separated from the cyclone, a first screw conveyor provided on the bottom of the hopper, a batch hopper connected to the screw conveyor, a second screw conveyor, and a separator provided on an outlet of the screw conveyor. The separator is provided with a shot ball outlet and a suction port.SELECTED DRAWING: Figure 1

Description

Detailed Description of the Invention [Technical field]

[0001] The present invention relates to a dust collector with a cyclone that is configured to fire shot balls at an object, collect and separate a small amount of shot balls together with dust, and finally separate the shot balls in a dust collector and release them into the outside air. [Background technology]

[0002] Equipment is used in which shot balls (usually steel balls) are sprayed onto the target object to abrade it, and the shot balls are then collected together with the abrasive dust. The shot balls are then separated from the dust, recovered and reused, and the dust is then collected separately. Such equipment is used for a variety of purposes, including separating molding sand from cast products, peeling exterior surfaces, and cleaning and grinding in the course of repair work on pavements, etc.

[0003] Such devices are disclosed in the following documents: [Patent Document 1] Japanese Patent Application Publication No. 3-26466 [Patent Document 2] Problems to be solved by the invention of Japanese Utility Model Publication No. 61-16063

[0004] As for the dust recovery mentioned above, it is difficult to immediately separate and recover the shot balls using a dust collector. Usually, the shot balls circulate inside the blast cleaner. Therefore, some means must be used to separate the shot balls from the dust in advance. A cyclone-type separator is generally used for this purpose, and while light dust particles separated by the cyclone can be easily sucked into a dust collector, coarse stones, sand, shot balls, etc. must be separated and removed by some prior separation treatment means.

[0005] The above dust collector is operated by the suction force of the exhaust blower, and this suction force creates the negative pressure to operate the cyclone, so in order for the dust collector to easily suck and remove the shot balls, stones, etc. separated from the cyclone, some device is required to smoothly separate and discharge the shot balls and stones without lowering the negative pressure in the suction discharge path.However, with a normal dust collector, when it becomes full of dust, it is necessary to stop the grinding and cleaning work and take time to discharge the dust, but with a dust collector with a cyclone, the amount of dust in the dust collector is very small, allowing it to operate for long periods of time.

[0006] The object of the present invention is to provide a dust collector with a cyclone that can effectively separate and discharge shot balls, stones, etc., without reducing the negative pressure in the suction system from the blaster to the dust collector.

[0007] In order to achieve the above object, the cyclone-equipped dust collector of the present invention comprises at least one cyclone (2A) connected to a blaster (1) that collects shot balls and dust, a hopper (3) that receives the dust separated from the cyclone (2A), a first screw conveyor (4A) provided at the bottom of the hopper (3), a batch hopper (5) having an inlet valve (B1) and an outlet valve (B2) provided on the inlet and outlet sides of the batch hopper (5) connected to the screw conveyor (4A) via the outlet valve (B2), a separator (6) provided at the outlet of the screw conveyor (4B), and the separator (6) has a shot ball outlet (6A) and The cyclone (2B) is provided with a first cyclone (2A) and a suction port (6B), and the suction port (6B) is provided with a second cyclone (2B), and the cyclone (2B) is configured so that most of the dust is discharged from a dust discharge port (7) via double valves (B3) (3C), and the cyclone (2B) is connected to a dust collector (8) together with the first cyclone (2A), and the small amount of floating dust not discharged by the first cyclone (2A) and the second cyclone (2B) is configured to be collected here, and the dust is separated in the dust collector (8) via an exhaust blower (9) and then released into the atmosphere, and the collected dust is discharged from a third screw conveyor (4C) below. Effects of the Invention

[0008] According to the present invention, the shot balls, stones, etc. sucked from the blaster into the cyclone are collected in a hopper while being separated by the cyclone function, dropped into the screw conveyor below, transported, and separated in a fixed amount in a batch hopper separated by an inlet valve and an outlet valve, from which they are sent to the second screw conveyor below, and the shot balls and dust are separated and discharged by a separator installed on the outlet side of this second screw conveyor, and this separation and discharge can be performed smoothly and without difficulty under a fixed amount.The second cyclone is connected to the separator, where dust separation is also performed, and the separated dust can be discharged through the lower double valves (B3) (3C) by counter action while maintaining the negative pressure of the cyclone. Other advantages of the present invention will become apparent from the following description of the embodiments. [Brief description of the drawings]

[0009] [Figure 1] 2 is an overall flowchart of the cyclone dust collector according to the present invention. [Diagram 2] FIG. 4 is an explanatory diagram showing the function of a cyclone according to the present invention. [Diagram 3] FIG. 4 is an explanatory diagram of the operation of a batch hopper and a valve according to the present invention. [Figure 4] FIG. 4 is an explanatory diagram of the function of the separator according to the present invention. [Diagram 5] FIG. 4 is an explanatory diagram of the operation of the dust collector according to the present invention. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] 5A to 5C are diagrams illustrating the operation of the double damper according to the present invention. [Figure 9] FIG. 2 is a side view of the dust collector according to the present invention. [Figure 10] FIG. 4 is another side view of the dust collector according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a dust collector with a cyclone according to the present invention will be described with reference to the drawings. As shown in Figures 1 to 4, the shot and dust flow from the blaster dust to the collector along the flow path indicated.

[0011] First, two cyclones 2A, 2A (or just one) are connected to a blaster 1 for collecting shot balls and dust, a hopper 3 for storing dust separated from the cyclones 2A, 2A, a first screw conveyor 4A provided at the bottom of the hopper 3, an inlet valve B1 and an outlet valve B2 provided at the inlet and outlet sides, i.e., a batch hopper 5 equipped with a double damper, is connected to the screw conveyor 4A, and a second screw conveyor 4B is connected via the outlet valve B2, a separator 6 is provided at the discharge port of the screw conveyor 4B, the separator (6) is provided with a shot ball discharge port (6A) and a suction port (6B), and the suction port (6B) has A second cyclone (2B) is provided, and most of the dust is discharged from a dust outlet (7) in the cyclone (2B) via double valves (B3) (3C). The cyclone (2B) is connected to a dust collector (8) together with the first cyclone (2A), and a small amount of floating dust not discharged in the first cyclone (2A) and the second cyclone (2B) is collected therein. The dust is separated in the dust collector (8) via an exhaust blower (9) and then released into the atmosphere, and the collected dust is discharged from a third screw conveyor (4C) below.

[0012] As shown in FIG. 2, the first cyclone 2A and the second cyclone 2B spiral downward inside due to the suction and flow of dust, during which the dust-air separation is achieved, and the dust is discharged from below and collected in a hopper 3, and transported by a screw conveyor 4A below. The dust leaving the screw conveyor 4A is collected in a batch hopper 5 by a double damper (with a valve opening and closing function), and from there it is transported to a second screw conveyor 4B, and from there it is sent to a separator 6 where it is separated into shot balls, stones, and dust, and the shot balls, stones, and other heavy objects are discharged to the outside.

[0013] The double damper batch hopper 5 is controlled to open and close by a double damper of valves (butterfly) B1 and B2 provided on the inlet and outlet sides of the batch hopper 5. As shown in the operating state in FIG. 3, when dust and shot balls are input from the first screw conveyor, the inlet valve B1 opens with the outlet valve B2 closed, and a predetermined amount of dust is accommodated in the batch hopper 5. The reason for processing in this batch manner is to perform the separation process of dust and shot balls by the separator 6 following the subsequent second screw conveyor 4B smoothly without clogging, as shown in FIG. 4. This is because the dust and the like are separated by weight into heavy shot balls, stones, etc. by suction with the exhaust blower 9 of the dust collector 8, and the light dust is further sucked from the outlet side.

[0014] The suction port 6B of the separator 6 is provided with a second cyclone 2B, and the cyclone 2B is provided with a dust outlet 7 via double valves B3 and 3C. Here too, separation by swirling flow is performed, and the dust is discharged from the dust outlet at the bottom, and the light dust is then sucked into a dust collector 8. As shown in Fig. 5, the dust collector 8 has a plurality of filter cloths 10 arranged therein, and the dust is filtered by the filter cloths and remains on the surface of the filter cloths, while only the air is exhausted. A nozzle arrangement 11 for spraying high-pressure pulsed air is provided inside the filter cloths, so that the dust accumulated on the filter cloths 10 is blown off completely.

[0015] In Fig. 9, wheels are drawn on the bottom of the device, but this is because the device is designed to be mobile when the dust generating site is involved in various pavement construction works, etc. Of course, wheels are not necessary for molding sand separation in foundries, etc., because the device is used as a stationary operation. [Industrial Applicability]

[0016] The present invention, as a lightweight and compact device, can be effectively used for dust collection work using shot balls, and can be used in factories, pavement construction sites, etc., and thus has a wide range of applications. [Explanation of symbols]

[0017] 1: Blaster 2A: First Cyclone 2B: Second Cyclone 3: Hopper 4A: First screw conveyor 4B: Second screw conveyor 5: Batch hopper 6: Separator 7: Dust exhaust port 8: Dust Collector

Claims

1. The dust collector with a cyclone comprises at least one first cyclone (2A) connected to a blaster (1) for collecting shot balls and dust, a hopper (3) for storing dust separated from the first cyclone (2A), a first screw conveyor (4A) provided at the bottom of the hopper (3), a batch hopper (5) having an inlet valve (B1) and an outlet valve (B2) provided on the inlet and outlet sides is connected to the outlet of the first screw conveyor (4A), and a second screw conveyor (4B) connected via the outlet valve (B2), a separator (6) provided at the outlet of the second screw conveyor (4B), and the separator (6) is provided with a shot ball outlet (6A) and a suction port (6B), and the suction port (6B) is connected to the batch hopper (5) via the outlet valve (B2). a second cyclone (2B) is provided in the first cyclone (2A), and the second cyclone (2B) is configured to discharge most of the dust from a dust outlet (7) via a double valve (B3) (3C); the second cyclone (2B) is connected to a dust collector (8) together with the first cyclone (2A), and a small amount of floating dust not discharged by the first cyclone (2A) and the second cyclone (2B) is collected therein; the dust is separated in the dust collector (8) via an exhaust blower (9) and then released into the atmosphere; and the collected dust is discharged by a third screw conveyor (4C) below.

2. 2. The dust collector with a cyclone according to claim 1, wherein the separator 6 has a dual separating function of separating the shot balls / stones from the dust.

3. 3. The dust collector with a cyclone according to claim 1 or 2, wherein in the second cyclone (2B), the separated dust is discharged through a valve, and the cyclone exhaust is guided to the dust collector (8) and then exhausted.

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