JPS5837452Y2 - Winding filter device - Google Patents

Description

[Detailed description of the invention] This invention is a roll-up type filter device that uses filter media spread in a roll and moves the filter media across the airflow from the delivery side to the take-up side, especially in the vertical direction from top to bottom. It relates to a type of filter that moves the filter medium.

Conventionally, this type of vertical winding type filter has a structure in which the filter material is rolled up in a roll at the top of the main body and is moved by winding it around the winding shaft at the bottom. Or, when a predetermined length of filter material is wound around the take-up shaft and feeding is stopped, the filter material that has been spread in a roll is always in contact with the filter material to suppress the feeding, in order to prevent the filter material from being excessively fed out due to inertia. A filter presser is attached that acts on the filter.

This filter medium presser can freely rotate in the radial direction of the filter medium, and as the filter medium is wound up and the roll diameter becomes smaller, the filter medium presser also responds and comes into contact with the filter medium shaft when the filter medium runs out.

This movement is also used to operate an end-of-volume display switch that detects the remaining amount of filter media, especially when the filter media is used up.

However, when fresh filter media runs out and fresh filter media is loaded, this filter media holder must be lifted upwards.In conventional reel-type filters, this filter media holder is lifted upwards and fixed; A stopper mechanism such as a stay was required at one or both ends of the presser foot.

In addition, vertical winding filters have a height of nearly 4 to 5 meters, and loading new filter media is done using a stepladder or ladder. In some cases, it was necessary to move stepladders and ladders, which was both inconvenient and dangerous, and in some cases required two people to do the work.

The present invention aims to eliminate these drawbacks, simplify the structure, and facilitate the loading operation of the filter medium.

An embodiment of the present invention will be described below.

In the figure, 1 is a non-woven filter material, 2 is a filter shaft that winds the fresh filter material on the delivery side into a roll, 3 is a support for the filter media shaft, and 4
is a filter media holder that can be rotated and is normally in contact with filter media 1,
5 is a guide roller for guiding the filter medium 1 to the air filtration surface 7;
6 is a guide roller for guiding the filter medium 1 from the air filtration surface 7 to the winding shaft 8 on the winding side; 9 is a winding drive device; 10 is the filter medium 1
11 is a receiving frame on the sending side, 12 is a receiving frame on the winding side, 13 and 14 are ducts connected to the filter device, 15 is an arrow indicating the airflow direction, and 16 is the rotation of the filter medium presser 4 as shown in FIG. The bearing supports the shaft 4, and consists of a pair of U half members 16b forming a guide groove 16a and a stopper plate 16C, and the rotating shaft 4' inserted into the guide groove 16a guides the movement in the horizontal direction. 17 is configured as shown in FIG.
It is a rotatable support that prevents rotation of the filter medium 1 and holds it in a state separated from the filter medium 1.

In such a configuration, the filter medium 1 is held on the filter medium shaft support 3 by the filter medium shaft 2, guided through the guide roller 5 to the air filtering surface 7, and then wound up on the winding shaft 8 via the guide roller 6.

On the other hand, the filter medium holder 4 is in contact with the filter medium 1 in the forward position as shown by the chain line in FIG. The filter medium 1 is rotated in the radial direction so as to constantly press the filter medium 1 with its own weight, and when the filter medium 1 has run out and rotated to the position where it comes into contact with the filter medium shaft 2, a switch (not shown) is operated and the filter medium 1 is rotated. Show that it is gone.

When loading a fresh filter medium 1, the filter medium holder 4 is lifted upward and slid back inside the guide groove 16a, and the rotating shaft 4' and the support 17 hold the filter medium 1 as shown in FIG. It is held horizontally in a state separated from the filter medium 1, making it easy to load the filter medium 1.

After loading the filter medium 1, if the filter medium presser 4 is slid in the same manner, it is regulated to the forward position by the stopper plate 16C and the stopper groove 16d, and becomes freely rotatable again to press the filter medium 1, as shown in FIG. .

Note that, as shown in FIG. 6, the bearing 16 may be formed as an integral member so as to form a guide groove 16a, and the bearing 16 may be mounted so that its surface is covered with a stopper plate 16C.

As described above, in this invention, the filter media holder, which can move forward and backward, is rotatable in the forward position, so it is possible to press the filter media and suppress the feeding amount, and in the backward position, it is fixed in position while detached from the filter media. This arrangement does not interfere with the loading of the filter medium and can be carried out simply by sliding operations, resulting in the effect that maintenance of the filter device is extremely easy.

[Brief explanation of drawings]

Fig. 1 is a front view of a winding type filter device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line II-II in Fig. 1, and Figs. FIG. 5 is a perspective view of the main part, and FIG. 6 is a perspective view of the main part showing another embodiment. 1 is a filter medium, 4 is a filter medium presser, 16 is a bearing, and 17 is a support.

Claims (1)

[Scope of utility model registration request] A filter medium presser that contacts the fresh filter medium wound into a roll to suppress the feed rate of the filter medium; a guide means that rotatably supports the filter medium presser and guides the filter medium presser so that it can move forward and backward in the air flow direction; Holding means that allows rotation of the filter medium holder in the forward position, cooperates with the guide means to prevent the rotation of the filter medium holder in the backward position, and holds the filter medium holder in a state separated from the filter medium. A retractable filter device.