JPH0532169Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a connected filter cage that is used by being inserted into the bag filter of a dust collector.

(Prior art) A cylindrical cage-like body made of metal rods called a filter cage is inserted inside the bag filter of a dust collector in order to prevent the filter cloth from being crushed during dust collection. If the filter cage is long, in order to facilitate insertion and removal, the filter cage should be made into two or more cage elements, each end face elastically bent inward, and then inserted into the connecting ring. Normally, the upper and lower parts are connected by using a connecting ring, but in addition to requiring a connecting ring, it is time-consuming to reduce the diameter of each cage element near the connecting part by the amount of the connecting ring. The strength against the filter is low, the connecting portion is easily damaged, and the filter cage is easily deformed during filtration, resulting in damage to the filter cloth. Therefore, the present applicant has sought to eliminate the above-mentioned drawbacks by creating a cage element that is easy to process, does not damage the filter cloth or the joints between the cage elements, and also prevents the cage element from coming off when subjected to pressure changes. As shown in Japanese Utility Model Application Publication No. 61-71216,
A plurality of fitting protrusions protruding from the end face of one cage element are fitted into the other cage element, and a plurality of latches whose bases are pivoted to an annular cross member near the end face of one cage element are provided. We have previously proposed filter cages that are connected one above the other by elastically engaging the tips with the annular cross members of the other cage element.

(Problems to be solved by the invention) However, in the previously proposed latch, it takes a lot of effort to attach it to the cage element because the latch has a special structure, and it does not come off from the annular cross member. If the filter cloth is sufficiently wrapped or bent in this way, there is a risk that the filter cloth will come into contact with the ends and be damaged, and there has been a strong demand for an inexpensive connected filter cage that solves this problem.

(Means for solving the problems) This invention solves these problems,
In a filter cage in which a plurality of cylindrical cage-shaped upper cage elements and a plurality of lower cage elements, each of which is formed by fixing a large number of vertical members fixed by annular cross members, are vertically abutted against each other and connected, the lower end inner surface of the upper cage element has a plurality of A hook-shaped fixed receiver is arranged, and a plurality of base fittings are arranged on the inner surface of the upper end of the lower cage element corresponding to the hook-shaped fixed receiver, and a plurality of base fittings are arranged in correspondence with the hook-shaped fixed receiver. On the inner surface, fasteners with operating levers are pivotally attached at their upper ends, and the free ends of the latches, whose lower ends are pivoted to the base of the fasteners, are tightenably engaged with the hook-shaped fixed receiver. It is characterized by being stopped.

(Embodiments) Next, the present invention will be described in detail with reference to illustrated embodiments.

1 and 2 are cylindrical cage-shaped upper and lower cage elements formed by welding and fixing a large number of vertical members 3 made of metal bars to annular cross members 4 made of the same material; The lower end of the cage element 2 is butted against the upper end of the lower cage element 2 to be connected and integrated. A plurality of hook-shaped fixed holders 6 are arranged by welding on the lower end inner surface of the upper cage element 1, and on the other hand, a plurality of hook-shaped fixed holders 6 are arranged on the upper end inner surface of the lower cage element 2 in correspondence with the hook-shaped fixed holders 6. A plurality of base metal fittings 9 are arranged by welding. Also,
An operating lever 8 is provided on the inner surface of the plurality of base metal fittings 9.
The attached fasteners 5 are pivotally connected at their upper ends, and the free ends of the respective latches 7 whose lower ends are pivoted to the bases of the fasteners 5 are tightenably locked to the hook-shaped fixed receivers 6. The upper cage element 1 and the lower cage element 2 are connected and integrated by the fastener 5. Note that the abutting ends of the cage element 1 and the cage element 2 are the first
As in the first embodiment shown in FIGS.
1 are welded to the outer peripheries of the abutting ends, respectively, so that the flanges of the flanged rings 10 and 11 abut against each other, or as in the second embodiment shown in FIGS. 3 and 4, The abutted ends of the many vertical members 3, 3 constituting the cage element 1 and the cage element 2 are formed into bent engagement parts 12, 13, and these are engaged with the annular cross members 4, 4 near the ends in a staggered manner. You can stop it.

This structure is inserted into a bag filter and used in the same way as a conventional connected type filter cage, but it has a plurality of cylindrical cage-shaped upper cage elements 1 and lower cage elements 2. A fastener 5 with an operating lever 8 which is connected and integrated by abutting the upper and lower cage elements 1 on each upper cage element 1
By being pivotally connected to the inner surfaces of a plurality of base metal fittings 9 arranged on the upper end inner surface of the lower cage element 2 corresponding to the plurality of hook-shaped fixed receivers 6 arranged on the lower end inner surface of the lower cage element 2. On the outer body surfaces of the upper cage element 1 and the lower cage element 2, the hook-shaped fixed receivers 6 and the fasteners 5 with the operating levers 8 are not exposed at all, and the upper cage element 1 and the lower cage element 2 are not exposed at all. A diameter-reduced portion is not formed near the connecting portion where the elements 2 are butted together, and as a result, the filter cloth may be deformed or the cage element 1 above may be deformed even by pressure changes during filtration.
There is no risk of damage to the filter cloth at the abutted connection of the lower cage element 2 and the lower cage element 2. Moreover, since the upper end of the fastener 5 with the operating lever 8 is pivotally connected to the inner surface of the base metal 9, and the lower end of the latch 7 is pivotally connected to the base, each of the fasteners 5 with the operating lever 8 is attached to a plurality of hook-shaped fixed receivers 6. By locking the free ends, each latch 7 can be tightened uniformly and accurately, and the firm tightening by the plurality of fasteners 5 will not loosen unless the operating lever 8 is touched. be. moreover,
A plurality of cage elements 1 and 2, which are connected and integrated by locking the free end of each latch 7 to a plurality of hook-shaped fixed receivers 6 provided, have a large tensile strength, and have a large tensile strength near the connection part. There is no risk of damage even if a slightly excessive force is applied during handling. Therefore, the connection and division of each cage element 1 and 2 is as shown in FIG.
This can be easily done by pivoting the operating lever 8 of each fastener 5.

(Effects of the Invention) As is clear from the description of the above embodiments, the present invention has a plurality of hook-shaped fixed holders arranged on the inner surface of the lower end of the upper cage element in the shape of a cylindrical cage.
A plurality of base metal fittings are disposed on the inner surface of the upper end of the lower cage element, and a fastener with an operating lever is pivotally connected to the inner surface of the base metal fitting at the upper end, and the lower end of the latch is pivotally connected to the base of the fastener. There are various types of filter cages of the conventional connecting type in which a plurality of upper and lower cage elements are connected vertically, with the free end of the latch being tightenably locked to the hook-shaped fixed receiver. This eliminates the problems of the conventional method, and together with the advantage of easy mass production, it has extremely great practical value.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of the essential part of a first embodiment of the present invention, and FIG. 2 is a partially cutaway front view of the same.
FIG. 3 is a partially cutaway perspective view of the main part of the second embodiment of the present invention, and FIG. 4 is a partially cutaway front view of the same. 1, 2... cage element, 3... vertical member, 4... annular horizontal member, 5... fastener, 6... fixed bracket, 7...
...latch, 8...operating lever, 9...base bracket.

Claims (1)

[Scope of utility model registration request] In a filter cage in which a plurality of cylindrical cage-shaped upper cage elements 1 and lower cage elements 2, each of which is formed by fixing a large number of longitudinal members 3 by annular cross members 4, are vertically butted against each other and connected, the upper cage element 1
A plurality of hook-shaped fixed holders 6 are arranged on the inner surface of the lower end of the cage element 2, and a plurality of base metal fittings 9 are arranged on the inner surface of the upper end of the lower cage element 2 corresponding to the hook-shaped fixed holders 6. Furthermore, a fastening fitting 5 with an operating lever 8 is provided on the inner surface of the plurality of base fittings 9.
are pivotally connected at their upper ends, and the free ends of each latch 7 whose lower end is pivotally connected to the base of the fastener 5 are tightenably locked to the hook-shaped fixed receiver 6. filter cage.