JPH08299730A - Filter connector - Google Patents

Abstract

PURPOSE: To provide a filter connector by which a filter element is easily attached and detached to and from a filter. CONSTITUTION: A filter connector 31 is constituted of an element joint 32 in which annular plate bodies 35, 35 having seal edges 36, 36 on the outer periphery are placed one upon another and connected by a connecting part 38, and an element guide 33 integrally assembled therewith. The element guide 33, a plate body is bent at the center in the width direction thereof, and also the central part thereof and both the sides thereof are made a vertical surface 33a and inclined surfaces 33b, 33b respectively. At both the ends in the width direction, notch grooves 41,... for not exerting the contraction of width of the guide by the fitting of the filter element upon an assembled part or the like with the element joint are formed, and in the bend part, a fitting hole 39 is formed, further on both sides in the width direction, notch parts 40, 40 are formed, respectively. The fitting hole 39 and the notch parts 40 are engaged with the connecting part 38 by their own elastic expanding force to integrally assemble these members. In this way, the filter connector 31 and the filter element fitted thereto are handled as one body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a filter connector for axially connecting filter elements.

[0002]

2. Description of the Related Art A filter element is required to have a diameter and a length according to the filter device. However, if a large number of types of filter elements corresponding to the diameter and length of the filter device are prepared, parts management becomes troublesome. is there. Further, the clogged filter element is discarded by incineration or the like, but the long filter element is troublesome to handle at the time of disposal. For this reason, a known filter device uses a plurality of filter elements connected by a filter connector.

FIG. 6 shows an example of the filter device 2. The filter elements 3 and 3 mounted on the filter device 2 are shown in FIG.
Are connected by the filter connector 1. The filter connector 1 is an element joint 5 having seal edges 5a and 5a for sealing the axial end faces of the filter element 3 by bending the outer peripheral edges of an annular plate body formed by stacking two sheets and integrating them in mutually opposite directions. And a cylindrical element guide 6 whose central portion in the axial direction is attached to the inner peripheral edge of the element joint 5 by appropriate means.

The filter device 2 has a cover 11 having an inlet port 8 and an outlet port 9 which are opposed to each other, and a cylindrical portion 10 which axially penetrates and surrounds an inner opening of the outlet port 9.
A cover 12 is detachably attached to the cover 11 by an appropriate means such as fitting, and a sealing edge 10a for sealing the axial end face of the filter element 3 is formed at the lower end of the tubular portion 10. A cylindrical drain member 14 having a drain port 14a, ... Is attached to the bottom of the case 12 in an airtight manner, and a plug 15 is attached to the lower end opening of the drain member 14.
Has been closed by. A holder 16 formed of an annular plate is mounted on the upper surface of the drain member 14 so as to be movable in an airtight manner in the axial direction, and is urged upward in the drawing by a coil spring 17 contracted between the holder 16 and the case 12. A sealing edge 16a similar to the sealing edge 5a is formed on the outer peripheral edge of the holder 16.

The tension bolt 19 inserted into the cover 11 and the case 12 from the upper opening of the tubular portion 10 has a distal end screwed to the drain member 14, and a proximal end rotatably provided in the tubular portion 10 with a nut 20. It can be screwed into. Reference numeral 21 in FIG. 6 is a guide screwed near the tip of the tension bolt 19. Further, although not shown, a gasket is provided between the case 12 and the cover 11 to hermetically seal the mounting portions thereof.

The element guide 6 in the filter connector 1 is provided with a tension bolt 19 by an appropriate means.
Is mounted at the desired position. Since the outer diameter of the element guide 6 is smaller than the inner diameter of the filter element 3 in order to mount a plurality of types of filter elements 3 having different diameters, the element guide 6 holds the radial position of the filter element 3. I can't.

In the filter device 2, the filter element 3 having a desired diameter and length is inserted into the case 12, and one end face of the filter element 3 is brought into contact with the seal edge 16a of the holder 16 to attach the filter connecting tool 1. By screwing the attached tension bolt 19 to the drain member 14 through the hollow portion of the filter element 3, one sealing edge 5a of the element joint 5 is brought into contact with the other end surface of the filter element 3. Next, another filter element 3 is inserted into the case 12, the axial end surface of the filter element 3 is brought into contact with the seal edge 5a of the element joint 5, the case 12 is fitted to the cover 11, and the tension bolt 19 is attached by the nut 20. When tightened, the cover 11 and the case 12 are assembled together and the filter elements 3, 3
Are attached to the filter device 2.

The axial end faces of the filter elements 3 and 3 attached to the filter device 2 are pressed against the sealing edges 16a, 5a, 5a and 10a by the biasing force of the coil spring 17 and the tightening force of the tension bolt 19 by the nut 20. Airtightly sealed by the inlet port 8 to the case 12
In the space between the filter element 3 and the filter element 3, 3
Respectively communicate with the hollow portions of the filter elements 3, 3. In the filter device 2, foreign matter in the compressed fluid such as compressed air that has flowed in from the inlet port 8 is filtered by the filter elements 3 and 3 to become a clean fluid, and the outlet port 9
From the outside. The drain stored in the case 12 is discharged from the filter device 2 by removing the plug 15.

However, since the element guide 6 of the filter connecting tool 1 cannot hold the radial position of the filter element 3, the filter connecting tool 1 and the filter elements 3 and 3 are substantially concentric with each other. It is troublesome to attach to. When replacing the clogged filter element, the nut 20 and the tension bolt 19 are unscrewed to remove the cover 1
1 and the case 12 are separated, the filter element 3 on the upper side of the filter connecting tool 1 can be easily taken out from the case 12, but the lower filter element 3 can be taken out from the case 12 unless the filter connecting tool 1 is removed. Since it is not possible, taking out the lower filter element 3 is troublesome.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a filter connecting device in which a filter element can be easily attached to and detached from a filter device.

[0011]

In order to solve the above-mentioned problems, the filter connector of the present invention is an annular element having a sealing edge for bending the outer peripheral edges of the filter element in opposite directions to seal the axial end face of the filter element. A filter connector comprising a joint and an element guide having filter element mounting portions on both sides in the axial direction and whose axial center portion is assembled to the inner peripheral edge of the element joint, wherein the element guide is provided in the widthwise intermediate direction. The width of the element guide is reduced by mounting the filter element at both ends in the width direction near the central portion so that it does not extend to the mounting portion opposite to the mounting portion with the element joint. Notches are provided for each, and the element guides are bent by the elastic expansion force due to bending. It is characterized by being integrally assembled to the instrument fitting.

In order to solve the same problem, the element joint in the filter connector is constructed by connecting two superposed plate bodies at the connecting portion at the inner peripheral edge, and the element guide has the shaft of the bending portion. A mounting hole is provided at the center in the direction, and a notch is provided at the axial center at both ends in the width direction, and the element joint and the element guide are assembled by the engagement of the mounting hole and the notch with the connecting portion. There is.

Further, in order to solve the same problem, the filter element mounting portion of these element guides is characterized by being an inclined surface whose diameter gradually decreases toward the tip.

[0014]

When the filter elements are fitted and inserted from both sides of the element guide, the width of the element guide in which the plate is bent is reduced, so that it is possible to attach a plurality of types of element guides having different diameters. The directional end faces respectively abut on the sealing edge of the element joint. These filter elements are
Since it is attached to the element guide by the elastic expansion force of the element guide due to bending, the element guide can be firmly attached and the alignment of these elements is easy. Therefore, the filter connector and the two filter elements can be handled as one piece.

Further, since the notch grooves are provided on both sides of the element guide in the width direction, even if the width of the element guide is reduced by mounting the filter element, the width of the element guide is reduced by the notch groove and the assembly portion with the element joint. Since it does not reach the mounting part of the filter element on the side,
The attachment of the filter element to the element guide does not affect the assembly portion of the element guide and the element joint and the attachment portion of the filter element on the opposite side.

Further, the two plate bodies of the element joint are integrated by a connecting portion, and the element guide is provided with a mounting hole and a notch, and the element guide is connected to the mounting hole and the notch by elastic expansion force. Since the parts are engaged with each other and they are integrally assembled, the assembling operation is easy and the assembling is strong. In addition, since the both sides of the element guide in the axial direction are formed as the inclined surfaces of which the diameter is gradually reduced, a plurality of types of filter elements having different diameters can be easily attached.

[0017]

1 to 4 show an embodiment of the present invention, in which a filter connecting member 31 includes an annular element joint 32.
And an element guide 33 whose center in the axial direction is assembled to the element joint 32, and is formed on both axial sides of the element guide 33 by polypropylene fiber or non-woven fabric or the like, and has a desired diameter and length. The cylindrical filter elements 3 and 3 are attached (see FIG. 1 and FIG. 5 described later).

The element joint 32 is formed by stacking annular plate members 35, 35 made of stainless steel, and bending the outer peripheral edges thereof in opposite directions to form seal edges 36, 36. The body 35 has a connecting portion 38 for connecting these plate bodies on the inner peripheral edge thereof.
The parts 5 and 35 are integrated by bending the connecting part 38 to the other plate 35. Also, the sealing edges 36, 36
Has a diameter capable of abutting the axial end faces of the filter elements 3 and 3 fitted in the element guide 33.

The element guide 33 shown in detail in FIGS. 2 to 4 is provided with a vertical surface 33a at the central portion in the axial direction and inclined surfaces 33b and 33b on both sides of the vertical surface 33a, the diameters of which gradually decrease. It is configured as a bent shape. Further, in the element guide 33, a mounting hole 39 is provided in a bent portion at the center of the vertical surface 33a in the axial direction, and notch portions 40, 40 are provided at both ends in the width direction at the same position in the horizontal direction as the mounting hole 39.
However, substantially horizontal cut grooves 41, 41 are formed at both ends of the vertical surface 33a in the width direction on the central side of the seal edges 36, 36, respectively.
By the elastic expansion force of the mounting hole 39 and the notches 40, 40
Elastically engages the connecting portion 38, and the element joint 32
It is assembled into one.

The element guide 33 has a vertical surface 33a and inclined surfaces 33b, 33b formed by bending a flat plate having mounting holes 39, notches 40, 40 and notches 41, 41 into a substantially V shape. Since it can have the following, the configuration is simple and inexpensive. Note that the bending of the element guide 33 is not limited to the V shape, and may be any as long as the elastic expanding force is generated by the bending. Reference numerals 43, ... In the drawing are folded portions formed at both ends in the axial direction and both ends in the width direction of the element guide 28.

The element guide 33 has a vertical surface 33.
It is inserted into the element joint 32 while slightly compressing the width direction of a, and the mounting hole 39 and the notches 40, 40 are connected to the connecting portion 38.
When the compression is released at a position opposed to, the both ends of the element guide 33 expand due to the elastic expanding force of the element guide 33 itself, and the mounting holes 39 and the notches 40, 40 engage with the connecting portion 38, thereby the element joint 32. It is assembled as one. Therefore, the assembling operation of the element guide 33 to the element joint 32 is easy, and the assembling is strong.

In the above-mentioned embodiment, when the filter elements 3 and 3 having a desired diameter and length are respectively inserted into both sides of the vertical surface 33a through the inclined surfaces 33b and 33b, these filter elements are attached to the filter connector 31. It is mounted and its axial end faces abut the sealing edges 36, 36, respectively. The filter connector 31 is configured such that the element guide 33 bends the plate body in a substantially V shape and can be contracted in the width direction, thereby concentrating and concentrating a plurality of types of filter elements 3 and 3 having different diameters. Can be installed on. In addition, the inclined surfaces 33b that gradually decrease in diameter on both sides in the axial direction,
Since 33b is provided, it is easy to attach filter elements having different diameters.

Further, when the filter elements 3 and 3 are attached, both ends in the width direction of the vertical surface 33a are pressed and the width thereof is reduced. The reduction of the width is caused by the notch groove 41 and the assembly portion with the element joint 32. Since it does not reach the vertical surface 33a on the opposite side, the element guide 33 is attached to the element joint 3 by mounting the filter element 3.
2 and the filter element 3 mounted on the opposite side is not affected.

FIG. 5 shows a filter device 2 using the above-mentioned filter connector 31. This filter device 2
Has the same configuration as that of the filter device described in FIG. 6, and therefore, the same major portions in the figure are designated by the same reference numerals and detailed description thereof will be omitted. Unlike the known filter connector 1, the filter connector 31 in which the filter elements 3 and 3 are attached to both sides of the vertical surface 33a can be inserted into the case 12 as an integral unit, so that the filter device 2 can be easily attached to the filter device 2. And the filter device 2
Since the filter elements 3, 3 can be fitted to the filter connector 31 outside, they can be easily aligned with each other.

The filter connector 31 having the filter elements 3 and 3 attached thereto is inserted into the case 12 to which the tension bolt 19 is attached, the case 12 is attached to the cover 11, and the tension bolt 19 is tightened with the nut 20. Elements 3 and 3 are filter devices 2
The axial end faces of the filter elements 3 and 3 are hermetically sealed by the pressure contact of the seal edges 16a, 36, 36 and 10a by the biasing force of the coil spring 17 and the tightening force of the nut 20. In this case, the filter connector 3
Since 1 is movable in the axial direction with respect to the tension bolt 19, the sealing force by each sealing edge becomes substantially equal.

When the filter elements 3 and 3 are clogged, the nut 12 and the tension bolt 19 are unscrewed, the case 12 is removed from the cover 11, and the upper filter element 3 is taken out from the case 12, thereby The filter element 3 on the side is also the filter connector 31
Can be taken out with. Therefore, it is easy to take out the filter elements 3 and 3 mounted on the filter device 2.

[0027]

As described above, in the filter connector of the present invention, since the element guide is formed by the plate body bent in the width direction,
By the elastic expansion force of the element guide, a plurality of types of filter elements having different diameters can be firmly attached. In this case, the notch grooves provided at both ends of the element guide in the width direction can prevent the reduction of the width of the element guide due to the attachment of the filter element from reaching the assembly portion with the element joint and the attachment portion on the opposite side. Further, since the filter connector and the filter element can be centered outside the filter device, they can be easily centered, and they can be handled as an integral unit, so that they can be easily attached to and detached from the filter device.

Further, a connecting portion is provided on the inner peripheral edge of the element joint, and a mounting hole and a notch portion are provided in the element guide, and the element hole is formed by the elastic expansion force of the element guide and the engaging portion and the connecting portion. Since the joint and the element guide are assembled, the assembly operation is easy and the assembly is strong. Further, since the inclined surfaces of which the diameter is gradually reduced are provided on both sides of the element guide in the axial direction, it is easy to attach a plurality of types of filter elements having different diameters.

[Brief description of drawings]

FIG. 1 is a front view of a half section of an embodiment.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of an element guide.

FIG. 4 is a side view of the same.

FIG. 5 is a diagram of a mode of use of the embodiment.

FIG. 6 is a view showing a usage state of a known connecting tool.

[Explanation of symbols]

 31 Filter Connector 32 Element Joint 33 Element Guide 33b Sloping Surface 35 Plate 36 Seal Edge 38 Connecting Part 39 Mounting Hole 40 Notch 41 Notch Groove

Claims (3)

[Claims] 1. An annular element joint having outer edges that are bent in opposite directions to form a sealing edge for sealing the axial end face of a filter element, and filter element mounting portions are provided on both sides in the axial direction. In a filter connector provided with an element guide part of which is assembled to the inner peripheral edge of the element joint, the element guide is formed by a plate body that is bent in the widthwise middle, and at both widthwise ends near the central portion, Notch grooves are provided to prevent the reduction of the width of the element guide due to the mounting of the filter element from reaching the mounting portion with the element joint and the mounting portion on the opposite side, and the element guide is elastically expanded by bending. The filter is characterized in that it is integrally assembled to the element joint by Continue ingredients. 2. An element joint is constructed by connecting two superposed plate bodies at a connecting portion at an inner peripheral edge, and an element guide has a mounting hole at an axial center of a bent portion and axial directions at both ends in a width direction. The filter connector according to claim 1, wherein each of the filter fittings is provided with a notch in the center, and the element joint and the element guide are assembled by engagement of the mounting hole and the notch with the connecting portion. 3. The filter connector according to claim 1, wherein the mounting portion of the filter element in the element guide is an inclined surface whose diameter gradually decreases toward the tip.