JP2550191Y2 - Screw compressor air filter mounting structure - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is an air filter mounting structure for a screw compressor, which has less clogging, has a longer air filter life, and can reduce the frequency of replacement. The present invention relates to a filter mounting structure.

[Prior art] As is well known, unlike a reciprocating compressor, a screw compressor detects the pressure of an air reservoir and continuously adjusts an intake valve of a suction unloader after an air filter to 0 to 100% to intake air. The amount is appropriately increased or decreased.

Generally, an air filter of a screw compressor is provided with a screw compressor body 51 as shown in FIG.
One annular air filter (hereinafter simply abbreviated as air filter) 52 is attached to the upper suction port, and a lid 53 having a slightly larger diameter and a shallower diameter from the upper part of the air filter 52.
The air is sucked from the outer periphery of the air filter 52.

[Problem to be solved by the present invention] The above-mentioned conventional screw compressor has one suction port.
Since the number of the air filters 52 is mounted, the capacity of the screw compressor is limited by the capacity of the air filter element.

Also, in order to cope with an increase in the work load of the screw compressor, it is necessary to replace the air filter element with a large processing capacity.In particular, when the work load of the screw compressor increases, the area load of the air filter increases. The filter clogs quickly and requires frequent air filter replacement. In particular, in an environment with a lot of dust, for example, in a tissue paper factory or the like, the air filter is severely clogged, and it is necessary to frequently replace the air filter, which has a disadvantage that the working efficiency is reduced.

The present invention can reduce the frequency of air filter replacement,
Moreover, it is an object of the present invention to provide an air filter mounting structure that can respond to an increase or decrease in the throughput of a screw compressor.

Means for Solving the Problems According to the present invention, a plurality of ports are formed on a side surface of a housing having a hollow inside, which has an opening that can be fitted to a suction port of a screw compressor. It is configured such that it communicates with the opening of the screw compressor and that air filters are respectively attached to the plurality of ports.

As the air filter used in the present invention, a conventionally used air filter can be used as it is.

Further, the housing having a plurality of ports is formed in a substantially rhombic shape having a hollow inside, the upper central portion of the rhombic shape is cut out, and both ends are formed in a triangular pyramid shape, and the lower portion is formed in a triangular pyramid shape having both ends. The formed part and the opening are communicated with each other, and round ports are respectively formed at substantially center portions of the outer surfaces of the triangular pyramids at both ends, and a mounting frame for an air filter is provided on the outer surface of the port. Things.

[Operation] The present invention is configured as described above, and after fitting the opening of the housing having a plurality of ports to the suction port of the compressor, the triangular pyramid-shaped four-sided port mounting frame is formed. After installing each air filter, operate the screw compressor.

In the present invention, unlike the conventional air filter, the air filter is attached to each of the multiple ports communicating with the screw compressor, so the load per unit area of the air filter is reduced even if the intake air volume of the screw compressor increases. Can be kept.

In addition, since the air filter is attached to a plurality of ports of the housing fitted into the suction port of the screw compressor, the filtration area can be greatly expanded.
Clogging of individual air filters can be reduced, and the frequency of air filter replacement can be greatly reduced. For example, when air filters are attached to four ports respectively,
The air filter element can be extended 6 to 10 times compared to the replacement cycle of the air filter, and the consumption of the air filter element can be reduced to 2/3.

Therefore, when used in a factory with a lot of dust, for example, a tissue paper factory, clogging of the air filter can be reduced by enlarging the filtration area, and work efficiency can be greatly improved.

[Embodiment] FIGS. 1 and 2 show an embodiment of a housing having a plurality of ports used in the present invention, and FIG. 3 shows a state in which an air filter is mounted. The figure shows a state in which the housing of the present invention is attached to a screw compressor. The present invention will be specifically described below with reference to these drawings. The housing 1 having a plurality of ports has a rhombic shape in plan view, a hollow inside, a cutout in the upper center, a passage 2 in the lower part, and a triangular pyramid 3 in both upper ends. I have.

On the other hand, ports 5 are respectively formed at substantially central portions of four wall surfaces 4 of the triangular pyramid 3 formed at both ends, and a mounting frame 6 of an air filter is mounted outside the wall surfaces 4. An opening 7 is formed below the passage 2 of the screw compressor, and the opening 7 can be fitted to a suction port of the screw compressor. The four ports 5 communicate with the openings 7 respectively. Incidentally, reference numeral 8 in the drawing denotes a cover.

As shown in FIG. 3, the air filter 9 has a ring shape, and a semi-cylindrical filter cloth 10 is attached to the outer peripheral surface of the air filter 9 in a densely connected manner. The fixing plate 11 is fitted on the outer periphery of the frame 6, the fixing plate 11 is applied to the upper surface thereof, and the fixing plate 11 is screwed to the mounting frame 6 to form an air filter 9.
Is fixed.

FIG. 4 shows a state in which the present invention is attached to the screw compressor body C. The suction port of the screw compressor body C is provided at the opening 7 of the housing 1 having a plurality of ports at the suction port of the screw compressor body C. It is fitted to.

That is, although the present invention has four air filters 9 attached, it can be made compact and the screw compressor C is attached to the four ports 5.
Since air can be sucked through the two air filters 9,
The filtration area is enlarged, the clogging of the air filter 9 can be reduced, and the frequency of replacement of the air filter 9 can be reduced.

[Effects] As described above, the present invention attaches a housing having a plurality of ports to a screw compressor, attaches an air filter to each of the plurality of ports, and can suck air through the plurality of air filters. The frequency of replacement due to clogging can be greatly reduced.

Further, by installing a plurality of air filters, the load per unit area of the air filters with respect to the increase in the intake air amount of the screw compressor can be reduced.

Furthermore, in the present invention, since a housing having a plurality of ports may be attached to the suction port of the screw compressor, the housing can be easily attached to the existing screw compressor, increasing the capacity of the screw compressor and reducing the frequency of replacing the air filter. Work efficiency can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a member having a plurality of ports, FIG. 2 is a front view, FIG.
FIG. 4 is an explanatory view showing a state where the present invention is mounted, and FIG. 5 is an explanatory view showing a mounted state of a conventional air filter. 1: housing with multiple ports, 2: passage, 3: triangular pyramid, 4: wall, 5: port, 6: mounting frame, 7: opening, 8: cover, 9: annular air filter, 11: fixed Board.

Claims (1)

(57) [Scope of request for utility model registration] A plurality of ports formed on a side surface of a housing having a hollow inside, the plurality of ports communicating with the respective openings of the screw compressor; An air filter mounting structure for a screw compressor, wherein an air filter is mounted on each of the plurality of ports.