JPH0532180Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a filtration type dust collector (filter type dust collector)
Specifically, the present invention relates to a wet and dry type dust collector with a pre-duster that combines a dust collector and a pre-duster into one set.

[Conventional technology]

In filtration type dust collectors that use filters to collect dust, if the dust that is sucked in contains coarse particle dust such as metal chips or abrasives for pipe lining, it is necessary to protect the filter. Therefore, pre-dusters are connected before and after the filtration type dust collector to separate and collect coarse particle dust.

There have traditionally been various types of pre-dusters used for the above purpose, such as gravity sedimentation type, inertial force type, and centrifugal force type (cyclone type).Among them, the cyclone type has the best separation effect. Due to its excellent features, it is widely used, including simple versions.

However, conventional cyclone pre-dusters are configured to separate coarse particle dust by swirling the sucked dust-containing air around a cyclone cylinder.
The entire tank (outer cylinder) that houses this cyclone cylinder is vertically long, making it difficult to install indoors with low ceilings or in narrow spaces.Furthermore, in the case of dust collectors that use conventional molded filters, drying The main method is to collect wet dust (including liquid).
There was a problem that the separation effect could not be performed.

Therefore, the present applicant has proposed a pre-dust separator, which is compact in the shape of a horizontally oriented circular drum and which can also be installed in the filter chamber of a dust collector, by filing the previous Utility Application No. 1982-29415. developed.

[Problem that the invention attempts to solve]

The pre-dust separator according to the above application has a structure in which the dust-containing air taken in from the intake port is rotated in a horizontally oriented circular drum to separate coarse particle dust from the dust-containing air, so the entire structure is oriented horizontally. The height problem can be solved. However, if this is housed in the filter chamber of a dust collector, a considerable amount of dedicated space will be required, resulting in an increase in the size of the dust collector itself due to the enlargement of the filter chamber, or a decrease in dust collection efficiency due to a reduction in the number of filters. The problem was unavoidable.

Therefore, the technical problem of the present invention is to be able to exhibit excellent coarse particle dust separation function in the filter chamber without reducing the number of refilters with larger filter chambers, and to be able to separate both dry and wet dust. To provide a dust collector with a pre-duster that can also be used.

[Means for solving problems]

The measures taken in the present invention to solve the above technical problems are as follows.

(1) The suction force or blowing force of the blower is applied, and
An intake port for dust-containing air shall be provided on the side of the fuselage, which has a cylindrical cross-section as a whole.

(2) Inside the fuselage, there is a cross-section with a length shorter than the fuselage and an open bottom, with a passage space between it and the inner wall for swirling the dust-laden air taken in from the intake port. Hanging a cylindrical protective tube.

(3) A filter made shorter than the protective tube shall be hung inside the protective tube.

[Action]

The above means works as follows.

The above element (1) makes it possible to suck or blow dust-containing air containing various types of coarse particle dust and moisture into the interior of the aircraft through the intake port provided on the side of the aircraft.

The element (2) above causes the dust-containing air sucked or blown into the inside of the aircraft to swirl vigorously along the circumferential surface of a protective tube formed with a cylindrical cross-section, and the centrifugal force causes the dust-containing air to flow into the air. It is possible to separate coarser particle dust and moisture and collect and discharge it at the inner bottom of the fuselage below the protective cylinder.

The element (3) above is to suck dust-containing air from which coarse particle dust and moisture have been separated by centrifugal force into the inside of the protective cylinder through the open bottom surface by the suction or blowing pressure of the blower, and pass it through the filter. At the same time, since the filter is completely surrounded and suspended inside the protective tube that acts as a cyclone tube, coarse particle dust or dust that swirls vigorously around the protective tube can be filtered and cleaned. This solves the problem of moisture coming into contact with the filter, causing it to damage (wear) or absorbing moisture. It also allows you to create a dedicated space for the protection tube in the filter chamber, and reduce the number of filters because of the protection tube. It is possible to provide a dust collector that does not require space, has approximately the same size (volume) as a conventional dust collector, and has a pre-duster function.

As described above, the above-mentioned technical problem can be solved by the above-mentioned means, and the problems of the conventional technology can be solved.

〔Example〕

Hereinafter, preferred embodiments of the dust collector with pre-duster according to the present invention will be described in detail with reference to the accompanying drawings.

In the figure, 1 is a cylindrical fuselage, and 2
is a dust outlet equipped with a cover 2a with a secret structure;
3 indicates a water drain valve, and 1a indicates a fixed flange formed around the mouth of the body 1. Also,
4 is a dust-containing air intake provided on one side of the fuselage 1, and a connection port is also provided on the other side of the fuselage 1, which is used when two or three or more units of the fuselage 1 are docked together as shown in Figure 5. 5 is provided. Furthermore, the fourth
In the figure, DS indicates the collected dust.

In addition, in Fig. 1, 6 is a pressure gauge that determines the finish condition of polishing by the degree of deflection of the needle, 7 is a transparent acrylic tube, and 8 is a transparent acrylic pipe. 7 and pipe 8 are used to determine the finished state of the polishing process, etc. by visually observing the inside thereof, but these are omitted in other figures than in FIG.

Next, a cover plate 9 is placed over the mouth of the body 1 to partition the inside and outside of the body 1, and a flange portion 9a that can be attached to the fixed flange 1a of the body 1 is formed on the periphery. Reference numeral 10 denotes a cylindrical protection tube installed vertically on the bottom surface of the cover plate 9, and the length of the protection tube 10 is approximately half the length of the fuselage 1, as shown in FIG.
The bottom surface has an opening 10a, and between the peripheral surface of the opening 10a and the inner wall surface of the body 1, dust-containing air sucked in from the intake port 4 is passed through the protective cylinder 10, as shown in FIGS. 3 to 5. A circular passage interval 11 is formed for turning along the circumferential surface. Also, 12...
are filters attached to the bottom surface of the cover plate 9, and each of these filters 12 has a length shorter than the protection tube 10 so that the lower end does not protrude below the bottom of the protection tube 10. The upper end openings 12a are opened on the upper surface of the cover plate 9 as shown in FIG.

On the other hand, in FIGS. 2 to 5, reference numeral 13 denotes a clean chamber body configured to be freely attached to the upper surface of the lid plate 9;
A flange portion 13a for mounting is formed on the periphery,
An exhaust duct 14 leading to a blower (not shown) is connected to the top surface and exerts a suction effect on the inside of the body 1 and the intake port 4 through each filter 12. The above-mentioned blower (fan) may also be provided. Further, dust may be blown in (pushed in) from the intake port 4 side.

Next, in FIGS. 1 and 2, reference numeral 15 denotes a dust removal chamber which can also be attached to the upper surface of the lid plate 9, and a dust removal chamber body 15 is supplied with water from a header pipe 16 through each on-off valve 17. A blower tube 18 is provided in a protruding manner to inject the compressed air toward the upper end port 12a of each of the filters 12, thereby forming a pulse jet type filter dust removal device.

The dust removal chamber body 15 constituting the above-mentioned pulse jet filter dust remover is attached to the upper surface of the cover plate 9 as necessary to brush off dust adhering to each filter 12. With a structure that combines the functions of the clean room body 13,
Dust collection and filter dust removal may be switched as appropriate.

In the figure, 5a is an end cap that closes the connection port 5, 19 in FIG. 4 is a dust amount detection sensor, and 20 in FIG. 5 is a connection hose.

Since the dust collector with pre-duster according to the present invention has the configuration as described above, the blower is operated to
When a suction action is exerted inside the body, dust-containing air is sucked into the fuselage 1 through the intake port 4, swirls vigorously within the circular passage gap 11 formed around the protective cylinder 10, and is separated by centrifugal force. Separate dust and moisture.

The coarse particle dust and water separated in this way descend to the inner bottom of the fuselage 1 due to their own weight and accumulate there, and are appropriately discharged from the discharge port 2 when the detection sensor 19 detects that the sensor 19 is full. Since the length of the protective tube 10 is formed shorter than the fuselage 1, the coarse particle dust and moisture separated by the rotation are transferred to the protective tube 10.
In addition, since the filter 12 is completely housed in the protection tube 10 and is suspended, it is possible to store enough water inside the fuselage 1 at the lower side. It is protected from particle dust and moisture, and can solve the problem of damage due to contact with dust and moisture or water absorption.

On the other hand, the remaining dust-containing air from which the coarse particle dust and moisture have been separated is released from the fourth opening 10a at the end of the rotation.
As shown by the arrow in the figure, it is sucked into the protective tube 10, where it is filtered by a filter 12 and cleaned.
The air is sucked and exhausted from the clean room body 13 through the exhaust duct 14 to the blower side.

In addition, the dust attached to each of the filters 12 is brushed off to the inner bottom of the fuselage 1 by compressed air injected from the broach tube 18 as necessary, and disposed of together with the coarse particle dust. Ru.

〔effect〕

As described above, the dust collector with pre-duster according to the present invention is very convenient because it can perform the pre-dust function of separating coarse particle dust and moisture, and the dust collection function of collecting the remaining fine dust. However, in this invention, the filter is suspended inside a protective tube (cyclone tube) that swirls the suctioned or blown dust-containing air and moisture, so the pre-dust and dust collector are completely integrated. This eliminates the need to provide a dedicated space for the pre-duster inside the dust collector or reduce the number of filters to install the pre-duster, and provides a dust collector that is approximately the same size as a conventional dust collector and has a pre-duster function. It is possible to demonstrate the advantages that can be achieved.

In addition, the protective tube that completely surrounds the filter and protects it from various types of coarse particle dust such as metal chips and abrasives prevents water (liquid) that is sucked in with dust-containing air from entering or adsorbing to the filter side. Therefore, the dust collector with a pre-duster of the present invention can be used in both dry and wet conditions, and is a practical product that can be manufactured compactly and at low cost. Coupled with its high properties, it is suitable for use in, for example, dry or wet pipe lining work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the dust collector with pre-duster according to the present invention when it is set in the dust removal state, Fig. 2 is an exploded perspective view of the whole, and Fig. 3 is a perspective view of the present invention when it is set in the dry dust collection state. 4 is a front sectional view thereof, and FIG. 5 is a plan view in a docked state. 1 is the fuselage body, 4 is the intake port, 10 is the protection tube, 11 is the passage interval, and 12 is the filter.

Claims (1)

[Scope of utility model registration request] An intake port for dust-containing air is provided on the side of the body, where the suction force or blowing force of the blower acts, and the entire body has a cylindrical cross section, and the intake port is provided inside the body between the inner wall and A protective tube with a cylindrical cross section with an open bottom and a length shorter than the fuselage is suspended with a gap between the passages that circulate the dust-laden air taken in. A dust collector with a pre-duster that features a suspended filter that is shorter than the protective tube.