CN201470262U

CN201470262U - Connection structure of filter and box body

Info

Publication number: CN201470262U
Application number: CN2009202341594U
Authority: CN
Inventors: 葛雯
Original assignee: Camfil Farr Filter Equipment Kunshan Co Ltd
Current assignee: Camfil Farr Filter Equipment Kunshan Co Ltd
Priority date: 2009-07-29
Filing date: 2009-07-29
Publication date: 2010-05-19
Anticipated expiration: 2019-07-29

Abstract

The utility model discloses a connection structure of a filter and a box body. The back part of the filter faces a clean room, and the front side of the filter faces a ventilation opening; a plurality of positioning pins are fixedly arranged at intervals on the wall of at least an opposite inside wall of the box body near to the clean room, cams are removably nested on the positioning pins, and the cams are in such initial state that the cam surface with the shortest distance to the positioning pins faces the back part of the filter and in such final blocking state that the set cam surface faces the back part of the filter, and the set cam surface is right tightly propped against the back part of the filter until the filter is fully sealed and fixed with a case partition board. The back part of the filter is pressed manually and horizontally pushed for a certain distance towards the ventilation opening during the installation, the hands for hindering the back part of the filter can be loosened after the cams are wholly nested on the positioning pins, and the cams can be rotated to enable that the back part of the filter is automatically propped until the filter is fully sealed and fixed with the case partition board. By adopting the technical scheme, the filter is not required to be held stably continuously, thereby making the installation more convenient and reliable; and since the positioning pins are fixedly arranged on the inside wall of the box body, the downstream space of the filter is prevented from being polluted.

Description

The syndeton of filter and casing

Technical field

The utility model relates to the installing area of filter, the syndeton of especially a kind of filter and casing.

Background technology

At present the syndeton of filter and casing mainly is to utilize the pretightning force of screw thread to compress filter with casing filter and casing fully to be tightly connected, and the method for present employing is as follows:

Adopt the pressing plate Fixed-Filter: bolt 31 is fixed on the box partition 21 with hex nut 30, pressing plate 32 is movably set on the bolt 31, then pressing plate 32 is positioned between this stop nut 33 and the hex nut 30 with stop nut 33, before filter 1 is installed, with pressing plate 32 turn to be parallel to this pressing plate a side of close casing 2 sidewalls, during Fixed-Filter 1, manually pin filter 1 back towards the horizontal sliding of ventilating opening direction to filter 1 with box partition 21 fully after the sealing, remain the sealing state and keep the position at filter 1 back vertical with casing 2 sidewalls, then rotary pressure plate 32, make pressing plate 32 prop up filter 1 back, finally make filter 1 be able to abundant sealing and fixing on box partition 21.

There is following technological deficiency in said method:

One, be difficult for to install: for avoiding hindering the installation of filter, need before installing with pressing plate all turn to be parallel to this pressing plate a side of close wall box; During Fixed-Filter, need steadily to hold filter always, be rotated in place until all pressing plates.

Two, there is the leakage pollution risk: if not sealing fully between bolt and the box partition, because the pressure of filter upstream is bigger, to cause the air of upstream filtered directly to enter the filter downstream space by the unsealing place between bolt and the box partition, contaminated filter device downstream space.

Summary of the invention

In order to overcome above-mentioned defective, the utility model provides the syndeton of a kind of filter and casing, can prevent effectively that the air of filtered from directly entering the filter downstream space, and can make the installation of filter more convenient reliable.

The utility model for the technical scheme that solves its technical problem and adopt is:

The syndeton of a kind of filter and casing, comprise filter and casing, the described casing body of wall that is connected, filter is positioned on the box partition by the encapsulant sealing, to use direction to be benchmark, (be that filter is under the air intake situation, described toilet is positioned at the downstream of filter to the back surface of described filter to the toilet; Filter is under the air draft situation, and described toilet is positioned at the upstream of filter), (be that filter is under the air intake situation, described ventilating opening is positioned at the upstream of filter towards ventilating opening in the front of described filter; Filter is under the air draft situation, described ventilating opening is positioned at the downstream of filter), at least one relative inner wall of described casing is provided with some alignment pins near fixed intervals on the wall of toilet, detachable activity orientation is arranged with cam (promptly free to rotate) between the two on the described alignment pin, the original state of described cam is apart from the back of the shortest wheel face towards filter apart from alignment pin, the final fastening state of described cam is for setting the back of wheel face towards filter, this setting wheel face just can hold out against the filter back to filter and the abundant sealing and fixing of box partition, during concrete enforcement: manually pin the filter back behind ventilating opening direction horizontal sliding one segment distance, cam all is set on the alignment pin by the original state of cam can unclamps the hand that holds the filter back, after cam all rotated to final fastening state, the filter back is tightened to filter and the abundant sealing and fixing of box partition automatically, like this during Fixed-Filter, need not steadily to hold filter always, install more convenient reliable; Because the alignment pin of detachable activity orientation cam is installed on the madial wall of casing, there is not the unencapsulated problem between the bolt and box partition in original technology, the air of filter upstream can filtered and is directly entered the filter downstream space, has prevented that the filter downstream space is contaminated.

As further improvement of the utility model, the setting wheel face upper edge wheel face of described cam has extended to form a step, and this step backstop is rotated excessively to prevent cam in the back of described filter.

The beneficial effects of the utility model are: when specifically implementing: manually pin the filter back behind ventilating opening direction horizontal sliding one segment distance, cam all is set on the alignment pin by the original state of cam can unclamps the hand that holds the filter back, after cam all rotated to final fastening state, the filter back is tightened to filter and the abundant sealing and fixing of box partition automatically, during Fixed-Filter, need not steadily to hold filter always, install more convenient reliable; Because the alignment pin of detachable activity orientation cam is installed on the madial wall of casing, there is not the unencapsulated problem between the bolt and box partition in original technology, the air of filter upstream can filtered and is directly entered the filter downstream space, has prevented that the filter downstream space is contaminated.

Description of drawings

Fig. 1 is a part-structure schematic diagram of the present utility model;

Fig. 2 is the part-structure schematic diagram of another angle of the utility model;

Fig. 3 is the prior art constructions schematic diagram that the utility model contrasted;

Fig. 4 is the structural representation of cam described in the utility model.

The specific embodiment

Embodiment: the syndeton of a kind of filter and casing, comprise filter 1 and casing 2, the described casing body of wall 3 that is connected, filter is positioned on the box partition 21 by encapsulant 4 sealings, to use direction to be benchmark, (be that filter is under the air intake situation, described toilet is positioned at the downstream of filter to the back surface of described filter 1 to the toilet; Filter is under the air draft situation, and described toilet is positioned at the upstream of filter), (be that filter is under the air intake situation, described ventilating opening is positioned at the upstream of filter towards ventilating opening in the front of described filter 1; Filter is under the air draft situation, described ventilating opening is positioned at the downstream of filter), at least one relative inner wall of described casing is provided with some alignment pins 22 near fixed intervals on the wall of toilet, detachable activity orientation is arranged with cam 23 (promptly free to rotate) between the two on the described alignment pin, the original state of described cam is apart from the back of the shortest wheel face 231 towards filter apart from alignment pin, the final fastening state of described cam is for setting the back of wheel face 232 towards filter, this setting wheel face just can hold out against the filter back to filter and the abundant sealing and fixing of box partition, during concrete enforcement: manually pin the filter back behind ventilating opening direction horizontal sliding one segment distance, cam all is set on the alignment pin by the original state of cam can unclamps the hand that holds the filter back, after cam all rotated to final fastening state, the filter back is tightened to filter and the abundant sealing and fixing of box partition automatically, like this during Fixed-Filter, need not steadily to hold filter always, install more convenient reliable; Because the alignment pin of detachable activity orientation cam is installed on the madial wall of casing, there is not the unencapsulated problem between the bolt and box partition in original technology, the air of filter upstream can filtered and is directly entered the filter downstream space, has prevented that the filter downstream space is contaminated.

The setting wheel face upper edge wheel face of described cam has extended to form a step, and this step backstop is rotated excessively to prevent cam in the back of described filter.

Claims

1. the syndeton of filter and casing, comprise filter (1) and casing (2), the described casing body of wall (3) that is connected, filter is positioned on the box partition (21) by encapsulant (4) sealing, to use direction to be benchmark, the back surface of described filter (1) is to the toilet, the front of described filter (1) is towards ventilating opening, it is characterized in that: at least one relative inner wall of described casing is provided with some alignment pins (22) near fixed intervals on the wall of toilet, detachable activity orientation is arranged with cam (23) on the described alignment pin, the original state of described cam is apart from the back of the shortest wheel face (231) towards filter apart from alignment pin, the final fastening state of described cam is for setting the back of wheel face (232) towards filter, and this setting wheel face just can hold out against the filter back to filter and the abundant sealing and fixing of box partition.

2. the syndeton of filter according to claim 1 and casing is characterized in that: the setting wheel face upper edge wheel face of described cam has extended to form a step (230), and this step backstop is in the back of described filter.