JPH0510901Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filter mounting device that uses an eccentric cam to press and fix a high-performance filter to a casing body from below.

[Prior Art] Conventionally, a device as shown in FIG. 4 is known that utilizes an eccentric cam to press and fix a high-performance filter to a casing body from below.

That is, a filter seat 33 having a flat surface is provided around the upper part of a casing body 32 having an inspection port 31 on one side, and an opening/closing lid 34 is attached to the inspection port 31, and a side plate 35 on the other side is provided. Two bearings 37 are fixed at the lower horizontal position with the same spacing as the front and rear width of the high-performance filter 36,
Two mechanical seals 39 are fixed at positions corresponding to the respective bearings 37 on the outer surface of a vertical plate 38 fixed vertically below the inspection port 31, and between each of the bearings 37 and the mechanical seals 39. two camshafts 40 are rotatably supported, and two eccentric cams 41 are fixed to each of the camshafts 40 at the same position as the left and right width of the high-performance filter 36,
Furthermore, a high-performance filter 36 is installed on this eccentric cam 41.
The front and rear ends of both side frames 42 are positioned, a high-performance filter is placed thereon, and two camshafts 40 are placed outside each mechanical seal 39 so that the two camshafts 40 can be rotated from outside the casing body 32. By rotating the removably screwed cam handles 43, the respective camshafts 40 rotate, and the protrusions of the eccentric cams 41 push up the front and rear ends of both side frames 42 of the high-performance filter 36. A gasket 44 fixed to the four circumferences of the upper surface of the high-performance filter 36 is pressed against the filter receiving seat 33 of the casing body 32 to be tightly fixed. And high performance filter 3
6, rotate each cam handle 43 in the opposite direction to remove the high-performance filter 3 using the eccentric cam 41.
It is formed so that it can be removed by releasing the pressed state of 6.

[Problems to be Solved by the Invention] However, in the conventional filter mounting device described above, fine adjustment of the degree of contact between the filter gasket 44 and the filter receiving seat 33 on the casing body 32 side is difficult because there are two camshafts 40. There are problems in that it is not easy and requires skill, and the eccentric cam 41 does not have a follow-up function due to compression reaction force due to aging of the gasket 44 itself, cushioning properties, etc.
There is a risk of contaminated air leaking, and there is also the problem that two expensive mechanical seals 39 are required for each set of high-performance filters 36, and the filter receiving seat 33 of the casing body 32
Since the gasket 44 has a flat plate-like surface, it needs to be finished with sufficient smoothness, resulting in high processing costs.In addition, the entire width of the gasket 44 is compressed to make it fit tightly against the filter seat 33. Therefore, the gasket 44 had to be compressed, and a large pressing force of the eccentric cam 41 was required.

It is an object of the present invention to provide a filter mounting device that solves these conventional problems.

[Means for solving the problem] The present invention involves bending a crimping piece at right angles and installing it around the upper side wall of the casing body, which is equipped with an inspection port in which a high-performance filter is installed. At the same time, a guide angle is fixed to the lower surface of the side wall parallel to the insertion direction of the high-performance filter below the casing body, and a support plate is supported on the lower surface of the guide angle so as to be movable up and down on the side wall. A filter presser shaft is fixed upright on both sides of support plates located on the front and rear lower surfaces of the frame, a contact plate is fixed to the upper end of the filter presser shaft, and a concave spring case is loosely inserted into the filter presser shaft, The upper outer edge of the spring case is fixed to the guide angle, and a pressure spring is inserted through the filter holding shaft between the contact plate and the bottom plate of the spring case, and a camshaft is installed on the lower surface of the middle of each guide angle. The distal end thereof is rotatably supported by a bearing fixed to the inner surface of the side wall, and the proximal end thereof is rotatably supported through a mechanical seal fixed to the outer surface of the lower surface of the inspection port. In addition, the above problem can be solved by fixing eccentric cams to the camshafts on the support plate, bringing the eccentric cams into contact with the support plate, and removably screwing the cam handle into the protruding end of the camshaft. Settled.

[Function] According to the present invention having the above configuration, the high-performance filter is inserted into the casing body through the guide angle, and the high-performance filter is inserted into the casing body using the filter holding shaft that is pressed upward by the pressure spring. is pressed upward, and the gasket is linearly crimped to the crimping piece, preventing leakage of contaminated air.On the other hand, when removing the high-performance filter, the filter holding shaft is pressed against the pressure spring by the action of the eccentric cam. lower it.

[Example] An example of implementing the present invention will be described in detail with reference to the drawings. Four side walls 2 are arranged in a row in a rectangular frame shape at the top and bottom, respectively, so that a high-performance filter 1 can be installed inside. Openings 3 and 4 are provided, and an inspection port 5 for inserting and inspecting the high-performance filter 1 is opened in one side wall 2a, an opening/closing lid 6 is attached to the inspection port 5, and the four side walls are A gasket receiving seat 10 is provided with a crimping piece 9 bent at right angles downward so that it can be linearly crimped onto the gasket 8 provided around the upper outer periphery of the side frame 7 of the high performance filter 1 on the inner periphery of the upper part of the filter 2. is protruded from the side wall 2a of the lower surface of the inspection port 5.
Two guide angles 11, which serve as guides when inserting the high-performance filter 1, are fixed to the lower part of the side wall 2b facing the casing main body 12.
form.

In the figure, reference numeral 13 denotes a stopper protruding from the front end of the guide angle 11, which prevents the high performance filter 1 from being inserted further.

Guide pieces 14 are fixed to a side wall 2c that is perpendicular to the side walls 2a and 2b of the casing body 12, and a side wall 2d that faces the side walls 2c, respectively, with the same spacing as the width of the high performance filter 1. To, 2
Each end of the book support plate 15 is a guide piece 1.
4 and is supported vertically on a shaft 16 so as to be vertically movable. On both sides of the two support plates 15, four filter presser shafts 17 are fixed upright at the front and rear lower surface positions of the side frame 7 of the high-performance filter 1, and the upper end surface of each filter presser shaft 17 is fixed. A contact plate 18 having a diameter larger than the filter holding shaft 17 is fixedly provided so as to be in contact with the front and rear lower surfaces of the side frame 7 of the high-performance filter 1.

Then, at a position facing each of the filter holding shafts 17 inside the guide angle 11, the outer edge of the upper end of the concave spring case 19 into which each of the filter holding shafts 17 is loosely inserted is fixed to the guide angle 11. At the same time, a pressure spring 21 is inserted through the outer periphery of each filter holding shaft 17 between the contact 18 and the bottom plate 20 of the concave spring case 19 to apply an upward pressing force to the pressure spring 21.

Furthermore, a camshaft 22 is mounted on the lower surface of each intermediate guide angle 11 on the two support plates 15, the tip of which is pivotally supported by a bearing 23 fixed to the inner surface of the side wall 2b, and the base end of the camshaft 22 is The support plate 1 is rotatably supported by penetrating a mechanical seal 24 fixed to the outer surface of the side wall 2a.
The eccentric cams 25 are fixed to the camshafts 22 on each of the camshafts 22 on the top of the camshaft 5, so that the eccentric cams 25 are brought into contact with each support plate 15, and the cam handles 26 for rotating the camshafts 22 are detachably attached to the protruding ends of the camshafts 22. It is screwed in.

Next, the operation of the embodiment of the present invention will be explained.

First, the cam handle 26 is rotated to rotate each eccentric cam 25 fixed to the camshaft 22 so that the protruding portion 2
5a to press and move each support plate 15 downward. As a result, the pressure spring 21 is pressed and compressed by the contact plate 18, and each filter holding shaft 17 moves downward, and the contact plate 18 is positioned at a lower position than the bottom plate 11a of the guide angle 11. In this state, open the opening/closing lid 6 of the casing body 12 and insert the high-performance filter 1 into the guide angle 1 through the inspection port 5.
1, the high-performance filter 1 is pressed and moved using the guide angle 11 as a guide, and is brought into contact with the stopper 13 and stopped. After that, the cam handle 26 is moved in the opposite direction to that described above. By rotating the eccentric cam 25 and gradually reducing the contact pressure of the protrusion 25a of the eccentric cam 25 against the support plate 15, the push spring 21, which has been compressed up to now, is elasticized and the support plate 15 is pushed upward. By moving the contact plates 18, each contact plate 18 comes into contact with the front and rear lower surfaces of each side frame 7 of the high-performance filter 1, pushing up the high-performance filter 1 and causing the gasket 8 provided around the outer periphery of the upper surface to reach the gasket receiving seat. 10 crimp pieces 9 are crimped in a linear manner.

When the high performance filter 1 is to be removed, the operation described above can be reversed.

[Effects of the invention] Since the present invention is as described above, the gasket is linearly crimped to the crimping piece, and the degree of crimping can be easily finely adjusted because there is only one camshaft, and the gasket itself does not change over time. Even if a problem arises in the compression reaction force or cushioning properties, the eccentric cam can be rotated to move the contact plate further upwards by the push spring, and the contact plate can be pressed deeper into the crimp piece to eliminate contaminated air. There is no risk of leakage, only one expensive mechanical seal is required, and since the gasket is linearly crimped onto the crimping piece, there is no need to smooth the crimping piece, and there is no need to finish the crimping piece smoothly. This has great advantages, such as not requiring any pressing force from the cam.

[Brief explanation of the drawing]

FIG. 1 is a vertical front view, FIG. 2 is a vertical side view, FIG. 3 is a cross-sectional plan view with the filter omitted, and FIG. 4 is a vertical front view showing a conventional example. In the figure, 1 is a high-performance filter, 2 is a side wall, 5 is an inspection port, 8 is a gasket, 9 is a crimp piece, 11 is a guide angle, 12 is a casing body, 15 is a support plate, 17 is a filter holding shaft, and 18 is a contact plate,
19 is a spring case, 20 is a bottom plate, 21 is a push spring, 22 is a camshaft, 23 is a bearing, 24 is a mechanical seal, 25 is an eccentric cam, and 26 is a cam handle.

Claims (1)

[Scope of utility model registration request] A crimp piece to be crimped to the gasket is bent at right angles and placed around the upper side wall of the casing body, which has an inspection port for installing the high-performance filter inside, and also has a crimp piece that is bent at right angles to the side wall of the casing body, which is equipped with an inspection port for installing the high-performance filter inside. A guide angle is fixed to the lower surface of the parallel side wall, and a support plate is supported on the lower surface of the guide angle so as to be movable up and down on the side wall. A filter holding shaft is fixed upright, a contact plate is fixed on the upper end of the filter holding shaft, a concave spring case is loosely inserted into the filter holding shaft, and the outer edge of the upper end of the spring case is fixed to a guide angle. , and a pressure spring is inserted through the filter holding shaft between the contact plate and the bottom plate of the spring case, and a camshaft is provided on the lower surface of the middle of each guide angle, and its tip is connected to a bearing fixed to the inner surface of the side wall. The eccentric cams are rotatably supported through a mechanical seal fixed to the outer surface of the lower surface of the inspection port, and each eccentric cam is fixed to the camshaft on the support plate. The eccentric cam is brought into contact with a support plate, and a cam handle is removably screwed into the protruding end of the camshaft.