JPH0261291B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a suction type dust collector that separates and removes dust from suction-transferred dust-containing gas.

Structure of conventional example and its problems In the conventional suction type dust collector, a bag filter is installed in the dust-containing gas suction path formed in the main body, and the bag filter separates dust from the dust-containing gas that is sucked and transferred. The dust is dropped into the dust receiving chamber below the dust. By the way, the dust in the dust receiving chamber was removed by opening the opening/closing lid provided on the main body and scraping it out.According to this, in order to open and scrape out smoothly, suction (negative pressure) is used Since the state must be stopped, the operating rate decreases. Furthermore, the scraping operation is labor-intensive and environmentally demanding.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a suction-type dust collector that allows dust to be taken out without stopping the operation, and that can be easily packed into bags.

Structure and operation of the invention In order to achieve the above object, the suction type dust collector of the present invention includes a dust collecting section in the dust-containing gas suction path formed in the main body, and a dust receiving chamber below the dust collecting section. A cylindrical body is provided at the lower end of the dust receiving chamber, one end of which communicates with the other, and a dust transfer device is provided within the cylindrical body, and the upper tier of hoppers formed in two upper and lower stages are communicated with each other at the other end of the cylindrical body. A rubber valve is provided at the discharge port, and the lower hopper is freely switched between the atmosphere and the suction hose via the valve.

According to this configuration, the dust in the dust receiving chamber can be transferred to the upper hopper by the dust transfer device, and by communicating the lower hopper with the atmosphere, the rubber valve of the upper hopper can be closed, the rubber valve of the lower hopper can be opened, and the lower hopper can be closed. The reversible action of opening the rubber valve of the upper hopper and closing the rubber valve of the lower hopper by applying suction force to the hopper allows the dust to be transferred to each hopper in sequence without stopping the suction operation. It can be taken out from the hopper.

Embodiment An embodiment of the present invention will be described below based on the drawings.

Figures 1 to 3 show a suction type dust collector 2 on a traveling trolley 1.
A vacuum device 4 equipped with a blower device 3 and a blower device 3 is shown. The traveling truck 1 has a plurality of wheels 5. The blower device 3 mounted on the traveling truck 1 includes a Roots blower 7 and a Roots blower 7.
The roots blower 7 has a suction port connected to a discharge port 10 of the suction type dust collector 2 via a pipe 9. Further, a suction hose 12 is connected to the suction port 11 of the suction type dust collector 2 . The roots blower 7
The discharge port communicates with the lower part of the silencer 14 via a pipe 13, and an exhaust pipe 15 is provided in the upper part of the silencer 14. The suction type dust collector 2 has a plurality of suction passages 18 (three are shown in FIG. 1, but more may be used) extending from the suction port 11 to the discharge port 10, and a back filter 19 is provided in the middle of the suction passages 18. A dust collection section 20 is formed by, for example, a dust collection section 20, and the lower end of this dust collection section 20 is communicated with a chamber 21 that serves as a dust receptacle for storing dust. This dust receiving chamber 21
A cylindrical body 22 is provided at the lower end of the cylindrical body 22, and the upper end of the cylindrical body 22 communicates with the cylindrical body 22. The cylindrical body 22 is disposed in an inclined manner so that the other end side is upward. Inside the cylinder 22,
A screw conveyor 23, which is an example of a dust transfer device, is provided.
A drive device 24 interlocked with the cylinder body 22 is attached to the other end of the cylinder body 22. 25A and 25B are upper and lower hoppers, and the upper end of the upper hopper 25A communicates with the lower end of the cylindrical body 22. And both hoppers 25
Cylindrical rubber valves 27A and 27B are externally fitted and fixed to the discharge ports 26A and 26B of A and 25B, respectively.
Of both hopper chambers 28A and 28B, a three-way valve 29 is communicated with the upper part of the lower hopper chamber 28B. This three-way valve 29 includes a supply/discharge port 30 communicating with the lower hopper chamber 28B, an intake port 32 communicating with the suction hose 31, and an atmosphere communicating port 3 open to the atmosphere.
3.

According to the vacuum device 4 having the above configuration, by operating the Roots blower 7 with the diesel engine 8, a suction force is generated in the bag filter 19, and the dust-containing gas is drawn in through the suction hose 12. Here, the dust is collected by the bag filter 19, and only clean air is sent to the silencer 14. After the sound is silenced by silencer 14,
It is released into the atmosphere via the exhaust pipe 15. The dust collected on the inner surface of the bag filter 19 falls by applying pressure from the outside after the suction force is released separately, and is received in the dust receiving chamber 21. The dust in the dust receiving chamber 21 is continuously transferred inside the cylinder body 22 by the screw conveyor 23,
Then, it is discharged into the upper hopper chamber 28A. At this time, atmospheric pressure is acting inside the lower hopper chamber 28B via the three-way valve 29, so the upper hopper chamber 28A communicates with the dust collection side and creates negative pressure (suction).
Due to the pressure difference, the upper rubber valve 27A automatically closes, and the lower rubber valve 27B opens, as shown by the solid line in FIG. At this time, the dust in the lower hopper chamber 28B falls through the discharge port 26B and is packed into a bag, for example, by providing a bag. The aforementioned three-way valve 29 is switched to apply suction force (negative pressure) to the lower hopper chamber 28B via the suction hose 31. Then, since both hopper chambers 28A and 28B have the same negative pressure, the upper rubber valve 27A automatically opens, and the lower rubber valve 27B opens due to the pressure difference with the atmosphere, as shown in the imaginary line in Figure 3. It closes automatically.

As a result, the dust in the upper hopper chamber 28A falls into the lower hopper chamber 28B through the discharge port 26A and is collected therein. The switching of the three-way valve 29 may be performed manually, but may also be performed automatically at predetermined time intervals, for example, using a timer. Figure 4 shows the cycle time table when switching to every 30 seconds.

Effects of the Invention According to the suction type dust collector of the present invention having the above configuration, the dust in the dust receiving chamber can be transferred to the upper hopper by the dust transfer device, and the rubber valve of the upper hopper can be closed by communicating the lower hopper with the atmosphere. The suction operation (dust collection work) is stopped by the reversible action of opening the rubber valve of the hopper, and applying suction force to the lower hopper to open the rubber valve of the upper hopper and close the rubber valve of the lower hopper. The dust can be sequentially transferred to the hoppers of each stage without causing any damage, and can be taken out from the hopper of the lower stage. Further, the extracted dust can be easily packed into bags.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a front view, Fig. 3 is a partially cutaway side view of the main part, and Fig. 4 is a cycle time table. It is. 2...Suction type dust collector, 3...Blower device, 7...
... Roots blower, 8 ... Diesel engine, 1
0... Discharge port, 11... Suction port, 18... Suction path, 19... Bag filter, 20... Dust collection section, 2
1... Dust receiving chamber, 22... Cylindrical body, 23... Screw conveyor (dust transfer device), 24...
Drive device, 25A... Upper hopper, 25B...
Lower hopper, 26A, 26B...Discharge port, 27
A, 27B... Rubber valve, 28A, 28B... Hopper chamber, 29... Three-way valve, 30... Supply/discharge connection port,
31... Suction hose, 32... Intake connection port, 33
...Atmospheric passageway.

Claims (1)

[Claims] 1. A dust collecting section is provided in the dust-containing gas suction path formed in the main body, a dust receiving chamber is provided below the dust collecting section, and a cylindrical body with one end communicating with the lower end of the dust receiving chamber is provided. A dust transfer device is provided inside the body, and the upper hopper, which is formed in two upper and lower stages, is connected to the other end of the cylinder, and a rubber valve is provided at the discharge port of each hopper, and the lower hopper is connected to the atmosphere through the valve. A suction type dust collector characterized in that it is switchably connected to a suction hose and a suction hose.