JPS6327766Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an intake filter for an air machine such as an air compressor.

BACKGROUND ART Air machines such as air compressors usually have an intake filter attached to their intake system to purify intake air. This intake filter has a filter element inside, but if used for a long time, the element becomes clogged, which causes a decrease in mechanical efficiency, so the internal element needs to be replaced periodically. However, in many cases, the intake filter is installed at a high place, 2 m to 4 m above the floor, and in that case, it is difficult to replace the element.

To explain more specifically, a conventional intake filter has a structure as shown in FIG. 1, that is, an inner cylinder 2 housing an intake element 1,
It had an outer cylinder 4 integrally provided with an upper lid 3 arranged concentrically with the inner cylinder 2. And element 1
To replace the intake filter, first remove the entire intake filter at the flange 5 and lower it onto the floor. Next, remove the nut 6 and remove the outer cylinder 4 from the inner cylinder 2. In this case, since the upper cover 3 is formed integrally with the outer cylinder 4, it is removed together with the outer cylinder 4, and the element 1 inside the inner cylinder 2 is exposed to the outside. Then, the three-tiered donut-shaped elements 1 are taken out from the inner tube 2 and replaced with new elements 1. After the element 1 has been replaced, the outer cylinder 4 is placed over the inner cylinder 2 again, tightened with the nut 6, set in the original position, and attached to the main body of the air machine using the flange 5. In other words, the intake filter assembly is quite heavy;
Removing and attaching the intake filter to the air machine main body at the flange portion 5, lowering it onto the floor, and lifting it back to its original position are quite difficult tasks, and it is difficult to perform this task at a high place. Ta.

The object of the present invention is to facilitate the replacement of elements, which is accompanied by the above-mentioned difficulties. In other words, when replacing the element, there is no need to install or remove the entire intake filter assembly as in the past, but only the element part of the intake filter assembly can be removed or installed; in other words, a lightweight one can be easily replaced. The purpose of this is to make it possible to replace the filter with just one.

The intake filter of the present invention that meets this purpose has an inner cylinder and an outer cylinder, and the filter element is housed in an element cage with a hook and installed in the inner cylinder, and the upper cover of the outer cylinder is attached to the outer cylinder. The upper cover is formed in sections and is connected to an outer cylinder so as to be horizontally rotatable.

With this configuration, when replacing the element, the element is exposed to the outside by rotating the top cover horizontally with respect to the outer cylinder, and only the element part can be removed while the element is housed in the element cage with a hook. Take it out from the inner cylinder, replace the element, place it in the inner cylinder again, rotate the top cover, and tighten it on the outer cylinder in its original state. In this element replacement, the entire intake filter assembly does not need to be installed or removed, and only the element portion needs to be replaced, which simplifies the work and reduces the weight of the parts to be handled.

Preferred embodiments of the intake filter of the present invention will be described below with reference to the drawings.

FIG. 2 shows a cross-sectional view of an intake filter according to an embodiment of the present invention. In the figure, reference numeral 11 denotes an intake pipe that connects to the main body of the air machine (not shown) and has a flange 12 at its lower end. It is fastened to the air machine main body side by this flange 12. An inner cylinder 13 and an outer cylinder 14 are arranged concentrically around the intake pipe 11. The inner cylinder 13 consists of a bottomed cylinder body having a bottom 15, through which the intake pipe 11 extends,
The inner cylinder 13 is fixed to the intake pipe 11 at the bottom 15. On the other hand, the outer cylinder 14 is fixed to the intake pipe 11 via a plurality of outer cylinder support fittings 16 extending in the radial direction. The annular gap between the inner cylinder 13 and the outer cylinder 14 forms an air intake.

An element cage 18 with a hook that houses an element 17 is installed in the inner cylinder 13. The element 17 has a donut shape and is made of a filter material that allows air to pass through but removes dust. A plurality of stages, three stages in the figure, of the element 17 are housed in a cage 18. The cage 18 consists of a cage that allows air to pass through but is capable of holding the element 17, and has a hook 1 at the top.
9 is installed. An element cage 18 with a hook is removably installed on the bottom 15 of the inner cylinder 13.

On the other hand, the upper part of the outer cylinder 14 is covered with an upper lid 20. The upper lid 20 is formed separately from the outer cylinder 14. A threaded shaft 21 is rotatably connected to the center of the upper lid 20, and the shaft 21 extends upward. At the upper end of the shaft 21 is an operating handle 2.
2 is attached, and the shaft 21 is rotatably screwed into the nut 23 of a rotary arm 24 having a nut 23 at its tip midway in the longitudinal direction. Then, by turning the operating handle 22,
The shaft 21 and the upper lid 20 connected to the shaft 21 move up and down.

The rotary arm 24 extends horizontally radially outward of the intake filter assembly, bends downward beyond the outer periphery of the intake filter assembly, and extends downward from there to connect the outer cylinder 14.
It extends to the outer peripheral surface of. and rotating arm 24
The lower end of the bearing 25 is fixed to the outer peripheral surface of the outer cylinder 14.
is rotatably supported. In addition, 26 indicates a sound absorbing material, which includes the outer surface of the inner cylinder 13 and the outer cylinder 1.
It is pasted on the inside of 4. Further, numeral 27 denotes an air suction port provided in the intake pipe 11 and is provided in a portion corresponding to the element 17.

Next, the operation of the intake filter having the above configuration will be explained.

First, regarding the flow of intake air, intake air is drawn from the annular air intake between the inner cylinder 13 and the outer cylinder 14, as indicated by the arrow in FIG.
Element cage with hook 18, element 17
Through the air inlet 27 of the intake pipe 11, the air enters the intake pipe 11 and flows to the air machine. Dust in the air is removed when the intake air passes through the element 17, but as time passes, dust accumulates in the element 17, making it necessary to replace the element 17.

The element 17 is replaced as follows. First, the operating handle 22 is rotated to lift the shaft 21 and the upper lid 20 joined to the shaft 21 from the outer cylinder 14 . Subsequently, the rotary arm 24 is horizontally rotated about the bearing 25, and the upper cover 20 is removed from above the outer cylinder 14. As a result, an element cage 18 with a hook accommodates the inner cylinder 13 and the element 17 installed inside the inner cylinder 13.
is exposed to the outside. Next, hook the hook 19 of the hooked element cage 18 with a crane or the like, and
Take out the entire element 17 outside. Therefore, the element 17 was replaced with a new element 17, and the element cage 18 with hooks after the replacement of the element 17 was hung again using a crane and installed inside the inner cylinder 13, and then the upper cover 20 was rotated onto the outer cylinder 14. by moving the upper cover 20 to the outer cylinder 14 using the operating handle 22.
Tighten it to the top edge of the This allows element 1
7 is completed.

In such replacement work of the element 17, there is no need to remove the entire intake filter assembly from the flange 12, but only the element 17 that needs to be replaced and the element cage 18 with a hook that houses it are removed.
The work is greatly simplified, and the weight of the removed items is also drastically reduced, which increases the ease of work. In addition,
It is necessary to remove the top cover 20 when taking out the element 17, but since the top cover 20 and the outer cylinder 14 are separate structures, and the top cover 20 can be rotated horizontally, the entire outer cylinder 14 can be removed. There is no need to remove the top cover 20, and only the top cover 20 needs to be removed.
It is easy to remove the top cover 20 by simply rotating the top cover 20 slightly in the horizontal direction.

As described above, when using the intake filter of the present invention, replacing the element only requires replacing the element part, and there is no need to handle heavy objects, which greatly simplifies the replacement work. Effects can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional intake filter, and FIG. 2 is a sectional view of an intake filter according to an embodiment of the present invention. 11...Intake pipe, 12...Flange, 13...
Inner cylinder, 14... Outer cylinder, 15... Bottom, 16... Outer cylinder support fitting, 17... Element, 18... Element cage with hook, 19... Hook, 20...
Upper lid, 21...shaft, 22...operation handle, 24
... Rotating arm, 25 ... Bearing, 26 ... Sound absorbing material, 27 ... Air suction port.

Claims (1)

[Scope of utility model registration request] An intake filter that is attached to an intake pipe of an air compressor or the like that extends in the vertical direction and has an intake port, the intake filter having a bottom plate that is attached below the intake port of the intake pipe, and a space between the outer periphery of the bottom plate and the outer periphery of the intake port of the intake pipe. an inner cylinder that is open at the top and has a cylindrical part that rises upwards; an outer cylinder having a cylindrical part and an upper lid formed separately from the cylindrical part and covering an upper part of the cylindrical part;
An element cage that is removably disposed between the cylindrical part of the inner cylinder and the suction port of the intake pipe, is placed on the bottom plate of the inner cylinder, and has a hook at the upper end to allow air to circulate; and an element cage that is stored within the element cage. a filter element that covers the intake pipe suction port from the outer periphery;
A threaded shaft is rotatably connected to the top cover of the outer cylinder and has an operating handle attached to its upper end, and one end is rotatably connected to the cylindrical part of the outer cylinder and the other end is connected above the top cover of the outer cylinder. An intake filter consisting of an extending rotary arm having a nut attached to the tip thereof to be screwed into the shaft.