KR20010028556A - HEPA-Filter Housing with Filter tightening mechanism - Google Patents

Abstract

PURPOSE: A HEPA-filter housing equipped with a filter adhered driving gear is provided to prevent damage of gasket and exposure of contaminated air, thereby secure safety by applying linear type cohesion so that cohesion with the gasket is controlled and maintained reasonably, and promptly and economically perform test run of expensive HEPA-filter and filter housing and leakage test during the filter exchange by easily maintaining and controlling the apparatus in the field. CONSTITUTION: The HEPA-filter housing comprises a filter tray (21) fixed on upper part of a screw axis (22) or a cam axis, a filter loading in upper part of the filter tray (21), and a filter housing (10) formed on upper and side part of the filter (20), wherein a gasket (24) is adhered to left and right side of lower part of the filter housing (10) formed on upper part of the filter, and a filter lead-in cover (19) is installed outside the filter housing (10).

Description

HEPA Filter Housing with Filter Tightening Mechanism

The present invention relates to a device for smoothly adhering and detaching between a high efficiency air filtration filter and a filter housing mounted in an exhaust system such as a nuclear power plant to prevent radioactive external leakage, and more particularly contaminated air in the nuclear industry, etc. Filter tight driving device to ensure close contact between the housing structure and the filter in order to prevent the polluted air in the HEPA-Filter housing from being exhausted to the outside without passing through the filter in the system for filtering and exhausting the A HEPA filter housing is provided.

In general, high-efficiency air filtration devices are often installed in the air inlet part in a semiconductor or medical facility, and the filter housing in the exhaust part is used for preventing radiation leakage in special fields such as nuclear power. There are few domestic generalized technologies for HEPA filter housings for air filtration of exhaust systems. In the past, there have been cases of relying on imports from foreign countries and some cases made by imitation of foreign goods, but only imitations. Even in foreign countries, it was difficult to find a formal case.

The present invention has been made to solve the above problems, the object of which is to develop a filter contact method that is a major part of the filter housing to ensure safety and maintenance and maintenance in nuclear and special industrial sites using a high-efficiency air filter It is to provide a HEPA filter housing with a filter-tight driving device that can secure the domestic production technology of HEPA filter housing with economic efficiency.

In order to achieve the above object, the filter tray is linearly moved up and down by installing a guide block for screwing a screw, which has a slanted surface and a plane, to move forward and backward as the rod rotates. It achieves smooth adhesion with the gasket by moving it, and when it is necessary to adjust the adhesion force during commissioning, only the screw shaft and the transfer guide block can be pulled out of the filter housing to be adjusted to maintain the given adhesion and easy adjustment function. It is achieved by providing a filter contactor with a simple structure using a drive and a cam which is useful when the filter replacement cycle is long.

Figure 1a is a block diagram showing a filter tray for a screw shaft of the present invention

Figure 1b is a block diagram showing a filter tray for a cam shaft of the present invention

Figure 2a is a block diagram showing a screw axis of the present invention

Figure 2b is a schematic view showing a cam axis of the present invention

Figure 3 is an assembly diagram showing the filter tray, screw shaft and cam shaft and filter housing of the present invention.

<Description of the code | symbol about the principal part of drawing>

(2): wheel base plate (3): wheel

(4,4 '): Screw (5,5'): Guide block

(9): handle insert 10: filter housing

(11,16): Shaft base angle (12): Shaft fixing block

(13): Shaft pull-out cover (14): Tray fixed angle

(15): Cam (17): Support Bolt

(18): Handle (19): Filter Entry Cover

20: filter 21: filter tray

(22): screw shaft 23: filter frame

24: gasket

Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings.

1A and 1B are schematic views showing the filter tray of the present invention,

2A and 2B are schematic views showing the screw shaft and the cam shaft of the present invention;

Figure 3 shows an assembly diagram showing the filter tray, screw shaft and cam shaft and filter housing of the present invention.

The basic configuration of the present invention comprises a screw shaft or a cam shaft for driving the filter housing, the filter tray and the filter tray up and down.

1A and 1B show the construction of the filter tray. In FIG. 1A, the filter tray for the screw shaft is composed of four angles 1, and wheel base plates 2 are screw bolts at both ends of the lower part of the angle 1. It is fixed by (not shown) and each wheel 3 is fixed to the outside of the wheel base plate 2.

1B shows that the wheel base plate 2 and the wheel 3 are not attached when the cam is used.

2A and 2B show the configuration of the screw shaft and the cam shaft. In FIG. 2A, the screw shaft is formed by machining screws 4,4 'in opposite directions to both portions of a round bar (not shown). Insert a guide block (5, 5 ') with a tapered surface in the part, and the other part has a narrow shaft that makes the diameter of the shaft slightly smaller than the inner diameter of the screw part so that the guide block (5, 5') can be pulled out if necessary. (6) part, a wide shaft (7) part having the same diameter as the outer diameter of the screw part to act as a stop wave of the guide block (5, 5 ') when the shaft rotates, to prevent the movement of the shaft itself when the shaft rotates It consists of the support shaft part 8 which processed a little smaller than the wide shaft 7, and the handle insertion part 9 which processed the surface for rotating a shaft.

The screw shaft is inserted into the shaft fixing block 12 on the shaft base angle 11 fixed in the filter housing 10 and the support shaft 8 portion is the shaft extracting cover 13 attached to the filter housing 10. It is supported and serves as a stop wave of the shaft, and the shaft base angle 11 is provided with a tray fixing angle 14 for limiting the position and movement of the filter tray 21.

FIG. 2B is a configuration diagram of a cam shaft, in which a cam 15 is installed at both portions of a round bar (not shown) and the round bar in which the cam 15 is fitted is formed by a plurality of support bolts 17 on the shaft base angle 16. It is supported and the handle 18 is attached to one end of the round bar to function as a rotation and fixing device of the cam (15).

FIG. 3 is an assembly configuration diagram of the filter tray, the screw shaft, the cam shaft, and the filter housing of FIGS. 1 and 2, and shows an embodiment in two rows and three stages of filtration.

The filter tray 21 is fixedly installed at the upper end of the screw shaft 22 or the cam shaft, and the filter 20 is loaded on the filter tray 21, and the filter housing 10 is disposed on the upper and side portions of the filter 20. Forming the gasket 24 is attached to the lower left and right of the filter housing 10 formed on the upper and the filter inlet cover 19 is installed on the outside of the filter housing (10).

The filter tray 21 has a filter 20 placed on the upper portion thereof, and works in close contact with the gasket 24 in the filter housing 10 while moving up and down in association with the screw shaft 22.

3A shows an example of screw shaft application by opening the filter inlet 19 outside the filter housing 10 and pushing the filter 20 into the filter tray 21 with a speed wrench (not shown). Rotating the handle insert 9 of the screw shaft 22 causes the guide blocks 5, 5 'on the screw shaft 22 to move forward and backward and along the tapered surface of the guide block 5, 5' to filter trays. (21) As the wheel (3) fixed to the lower portion is moved to the upper portion at the same time as the rotation is to raise the filter tray 21 up.

Therefore, the filter frame 23 is brought into close contact with the gasket 24 attached to the filter housing 10, and when the given degree of adhesion is reached, the filter tray 21 does not rise any more even if the screw shaft 22 is rotated. The degree of adhesion is maintained and the degree of adhesion is not changed by mechanical vibration or the like unless the screw shaft 22 is rotated from the outside without a special locking device. Initially, when the filter 20 is loaded and the gasket 24 needs to be adjusted during the test run, the shaft take-off cover 13 is opened to remove the screw shaft 22 and the guide blocks 5 and 5 'to the outside to guide the block ( 5,5 ') can be easily adjusted by changing the position.

3 (b) shows an example of camshaft application, in which the cam 15 is opened when the filter inlet 19 is opened, the filter 20 is pushed into the filter tray 21, and the handle 18 is rotated about 45 degrees. This rotation is pushed up the filter tray 21 and the handle 18 is fixed on the filter housing 10 to fix the position of the cam 15, the height adjustment of the cam 15 is the height of the support bolt 17 It is possible by adjusting.

Variant

The present invention related to the above is not limited to the embodiment, but also applicable to a multi-stage multistage filtration apparatus, and structural modifications and design changes are all included in the present invention. Instead of two opposite screws on one axis, the same direction of the screw may be used, and the stop wave device of the shaft may be applied differently.

The present invention is a device for preventing the leakage of contaminated air of the HEPA filter housing, by applying a linear adhesion to the gasket can be adjusted and maintained without any difficulty, to ensure the safety by preventing the damage of the gasket and leakage of contaminated air. It is a very useful invention that enables easy and economical maintenance and adjustment work in the field, so that expensive HEPA filters and filter housings can be commissioned and leak tested during filter replacement.

Claims (3)

The filter tray 21 is fixedly installed at the upper end of the screw shaft 22 or the cam shaft, the filter 20 is loaded at the upper part of the filter tray 21, and the filter housing 10 is formed at the upper side and the side of the filter 20. Hepa with a filter-coupling drive device, characterized in that the gasket 24 is attached to the lower left and right sides of the filter housing 10 formed on the upper side and the filter inlet cover 19 is installed outside the filter housing 10. Filter housing. The method of claim 1, The screw shaft processes the screws 4 and 4 'in opposite directions to both portions of the round bar, and inserts the guide blocks 5 and 5' into the two screws 4 and 4 ', and the remaining portions are the screws ( Narrow shaft 6 part processed slightly smaller than inner diameter of 4, 4 '), wide shaft 7 part which has diameter equal to outer diameter of screw 4, 4', and this wide shaft 7 One end of the shaft fixing block 12 on the shaft base angle 11 fixed in the filter housing 10 and composed of the support shaft 8 portion slightly processed and the handle inserting portion 9 processed. The support shaft 8 is inserted and supported by the shaft extraction cover 13 attached to the filter housing 10, and the filter fixing drive, characterized in that the tray fixing angle 14 is installed on both sides of the upper end of the shaft base angle 11 HEPA filter housing with device. The method of claim 1, The cam shaft is provided with cams 15 on both sides of the round bar, and the round bar on which the cam 15 is fitted is supported by a plurality of support bolts 17 on the shaft base angle 16 and handles 18 at the end of the round bar. HEPA filter housing having a filter contact driving device is installed.