JPH022816A - Filter of oil cleaner - Google Patents

Abstract

PURPOSE:To prevent a 1st filter medium and its fine powder from being mixed into cleaned oil by disposing a 2nd filter bodies made of nonwoven fabric, etc., of finer mesh than the particle size of the 1st filter medium of granular shape on the both sides of the 1st filter medium layer, and calking to fix the peripheral rims of the 2nd filter bodies to a case. CONSTITUTION:A pair of plates 34, 35 having perforated parts 37, 38, and the peripheral wall connecting between the plates constitute an oil cleaner case 30. In this oil cleaner case, the 1st granular filter medium layer 33, such as a layer of activated carbon, and the 2nd filter bodies 31, 32 which are disposed on both surfaces of the filter medium layer 33 and consist of soft nonwoven fabric, etc., of finer mesh than the particle size of the above-mentioned granular filter medium, are received, and the peripheral rims of the 2nd filter bodies are calked to be fixed to the case. By this constitution, the filter medium and its fine particles are surely prevented from being mixed in the cleaned oil because such clearances are eliminated that the filter medium and its fine particles are leaked through.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a filter for an oil purifier that removes coloring, odor, etc. from contaminated edible oil such as tempura oil that has been used or is in the process of being used.

[Background technology] In order to remove the coloring and odor of oil,
Activated carbon is used as a filter material, as shown in Publication No. 145340, but in the case of using a granular filter material such as activated carbon, the granular filter material may be mixed into the purified oil. If this occurs, the oil cannot be reused.

For this reason, in the method disclosed in the above-mentioned publication, a filter material such as filter paper is used in combination to prevent the granular filter material from being mixed into the purified oil.

By the way, granular filter media such as activated carbon become pulverized by vibrations and impacts received during transportation. Even when a granular filter material is sandwiched between other filter materials, such fine powder may leak out from between the other filter material and the case, resulting in unsanitary conditions or being used while adhering to the outer surface. There is a problem that it may get mixed into the oil.

In particular, when there is a gap between the filter material such as filter paper placed on the oil outlet side and the case, the granular filter material and its fine powder may leak out into the purified oil and mix into the purified oil. It ends up.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to solve the problem of leakage of the granular filter material in products using a granular filter material such as activated carbon. To provide a filter for an oil purifier that prevents granular filter material from being mixed into purified oil.

[Disclosure of the Invention] According to the present invention, a case is composed of a pair of plates having an opening and a peripheral wall connecting the two plates, and a granular first filter material and a first filter material are disposed in the case. A second filter material having a finer grain size and softer than the grain size of the material, the filter having a second filter material disposed on at least both sides of a layer of the first filter material, the first filter material and a pair of plates. The second filter media located between the two are characterized in that at least one peripheral edge is caulked and fixed to the case, and the peripheral edge of the second filter media is fine and soft. By caulking and fixing it to the case, it is possible to prevent a gap from being created between the second filter material and the case through which the granular first filter material and its fine powder would leak out.

The present invention will be described in detail below based on the illustrated embodiment. As shown in FIGS. 1 and 2, the filter 3 here uses a granular first filter material 33 made of activated carbon as the main filter material for filtration. It is configured as a cartridge as a component,
Inside the oil purification case 30, which is made of a metal such as aluminum and has a bottomed cylindrical shape and has a bottom plate 35 with a number of holes 38,
The oil purifying case 30 stores the first filtering material 33 with its upper and lower sides sandwiched between a pair of second filtering materials 31 and 32 formed of a nonwoven fabric made of polyester or the like.
It is formed by caulking and fixing a plate 34, such as a punched metal plate, in which a hole 37 is formed, to the upper opening of the holder.

The second filter media 31 and 32 are made of soft non-woven fabric with a mesh that is finer than the first filter media 33, and are provided to prevent the first filter media 33 from flowing out. However, both of the second filter media 31 and 32 here have their peripheral edges caulked to the oil purifying case 30, so that the second filter media 31 and 32 are
．． 32 and the oil purification case 30, the granular first filter material 33 may leak out, or the oil may leak out from the gap between the filter material 32 and the oil purification case 30.
This prevents the water from flowing without passing through 1.32.

In addition, in caulking and fixing both the second filter materials 31 and 32, first, as shown in FIGS. is caulked by squeezing the oil purification case 30 inward, and then inserting the first filter material 33 up to the stepped portion 36 of the oil purification case 30, as shown in FIGS. 2(c) and 2(d). The filter material 31 is inserted into the stepped portion 36 together with the plate 34 in which the opening is formed.
The second filter media 31 and 32, which are disposed in this way and are supported on one side by the plate 34 and the bottom plate 35 of the case 30, are caulked on both sides of the first filter material 33 layer. The first filter material 33 is compressed. For this reason, unnecessary movement of the first filter material 33 is suppressed, and pulverization of the first filter material 33 due to rubbing of the first filter materials 33 against each other is prevented. The first filter material 33 that has become a fine powder becomes the second filter material 3
This prevents oil from leaking out through 1.32 and getting mixed into the oil, and also prevents it from leaking through the second filter material 313.
Since the periphery of the first filter material 33 is caulked and fixed, the first filter material 33 does not leak out, and there is no short path for oil, which improves the filtration performance. It is.

Moreover, the plate 34 in the step portion 36 and the second filter material 3
The flange formed by caulking with 1 not only increases the strength of this cartridge type filter 3, but also
As will be described later, it also serves as an attachment member when attaching the filter 3 to the oil purifier.

Figures 3 and 4 show an oil purifier using the three filters mentioned above. In addition to the filter 3, 1.2 filters are installed at the top of a container 5, which has a cylindrical shape with a bottom and has an M4 attached to its top opening.First, let us explain the container 5. A cylindrical body is formed by press-fitting and welding a disc that will serve as the bottom plate to the bottom of a cylindrical body whose spout bulges outward, and is made of metal such as stainless steel or aluminum. A pedestal 6 is attached to the lower surface of the bottom plate, and a handle 7 is attached to the side of the circumferential surface opposite to the portion where the bulge 54 serving as the pouring spout is formed.

A pedestal 6 made of synthetic resin is attached to the lower surface of the bottom plate of the container 5 via a bottom plate metal fitting 60. The bottom plate metal fitting 60 has a hole 66 that engages with a positioning protrusion 65 protruding from the lower surface of the bottom plate of the container 5, and has several countersink parts 6 with internal threads cut on the periphery.
7 is equipped with a fitting hole 68 in the center, and the pedestal 6
The pedestal 6, which is positioned by fitting the central protrusion 61 into the fitting hole 68, is attached to the container 5 through the bottom plate fitting 60 by six screws screwed into the counter sink part 67.
is fixed to.

The handle 7 is composed of a main body 70 and a cover 71, both of which are made of synthetic resin, and includes a pair of upper and lower handle fittings 76.
．． It is attached to the container 5 via 76. Each handle metal fitting 76 has its base end fixedly welded to the container 5 and has a countersink part 77 with a female thread cut on the distal end surface. 76, and the cover 71 is attached to the main body part 70 with screws 79. Here, the main body 70 has a pair of upper and lower handle fittings 76.7.
A space 74 into which fingers can be inserted is formed between the container 5 and the container 5, and a partition piece 72 integrally formed with the main body 70 is located between this space and the outer peripheral surface of the container 5. The fingers gripping the handle 7 are prevented from coming into contact with the outer circumferential surface of the container 5, and furthermore, the partition piece 72 itself does not come into contact with the outer circumferential surface of the container 5, leaving a heat insulating space 73 between them. Therefore, even when high-temperature oil is contained in the container 5, the fingers holding the handle 7 will not get burned or feel hot. Further, the upper end of the handle 7 forms a space 75 that is open upwardly and to both sides with the outer circumferential surface of the container 5 above the upper handle fitting 76. The knob 14 can be accommodated in this space 75.

Next, the structure of the container 5 will be explained. This container 5, which has a cylindrical shape with a bottom and a spout portion formed as a bulging portion 54, has a circular ring body 5 made of metal such as stainless steel or aluminum along its upper inner circumferential surface.
0 is fixed, and an oil filler fitting 55 is removably inserted into the spout. The ring body 50 has two upper and lower annular protrusions 51 and 52 and a plurality of protrusions (not shown) located above the annular protrusions 51 and 52 that protrude inward. The upper annular protrusion 51 has a trapezoidal cross section, the lower annular protrusion 52 has a semicircular cross section, and the upper space in the container 5 is surrounded by a horizontal link body 50. A part with a circular cross section,
It is partitioned into a spout portion formed as a bulge 54. Note that the upper end of the container 5 and the upper end of the ring body 50 are cut out at the portions facing the space 75 of the handle 7.

The bulging part 54 serving as a spout is formed from a position slightly below the vertical center of the container 5 to the upper end of the container 5, and the upper end is cut off diagonally. The oil filler fitting 55 is inserted therein as described above. The oil filler fitting 55, which is inserted until its lower end abuts against a protrusion 56 protruding from the inner surface of the bulging portion 54, has a semicircular horizontal cross section, and the curvature of the horizontal cross section increases upwardly. When inserted into the spout, it protrudes above the upper end of the bulge 54 that has been cut off as described above, and a gap 57 is formed between it and the inner surface of the bulge 54. It is something that gives rise to

M4 that closes the upper end opening of the container 5 formed as described above.
is composed of two parts: an upper lid 40 and an oil filler lid 41.

The upper cover 40 has a seal ring 42 attached to its outer circumferential surface that contacts the inner circumferential surface of the ring body 50, and engages with the protrusion on the ring body 50 by fitting the seal ring 42 into the ring body 50 and rotating the seal ring 42. Multiple engagement grooves (
(not shown) is formed on the outer circumferential surface, and a pair of semicircular portions 44 are formed between the two recessed portions by providing a pair of four semicircular portions at intervals on the upper surface, the center being deeper. Furthermore, a recess 45 is provided at one end side of the knob portion 44 on the upper surface.

The base end of the oil filler lid 41 is pivotally supported by the upper cover 40, and one end of a spring 46 made of stainless steel or the like arranged in a recess 45 of the upper lid 40 is latched to the lower surface of the oil filler lid 41. When the oil filling lid 41 is folded down, the spout is closed to prevent dirt, dust, insects, etc. from entering, and when it is raised, the spout is opened. The opening and closing of the pouring spout by the tilting operation of the oil filler lid 41 is performed in both directions by reversing the biasing direction of the spring 46, which is bent halfway. It is divided into 1 inch pieces. In other words, the spring 46 holds both the spout closed state and the spout open state.

Now, in addition to the filter 3, two types of filters 1.2 are arranged in the container 5.
This is constructed by arranging a wire mesh 11 of 30 to 40 meshes in the lower opening of an inverted conical case 10 made of metal such as stainless steel or aluminum, and a wire mesh handle 13 equipped with the knob 14 is It is attached by welding. Note that the knob 14 is made of synthetic resin, heat-resistant rubber, or the like. The filter 2 is formed by molding paper into a cylindrical shape with a bottom, and in particular has many vertical folds formed on the circumferential surface, and is housed together with the filter 3 in a cylindrical case 8. are arranged and housed in the container 5.

The case 8 is housed in the container 5 by having its upper edge locked onto the annular protrusion 51 of the ring body 50, and an arc-shaped hanger 81 is housed in the upper part and is cut out by 1 inch. A small-diameter cylindrical portion 83 is formed at the lower portion via a tapered surface 82, and an annular packing 84 having oil resistance is installed on the inner peripheral surface of this small-diameter cylindrical portion 83. The filter 3 formed as a cartridge is housed in a case 8 from above, and the flange portion at the upper end of the oil purifying case 30 is brought into contact with a gasket 84, so that the filter 3 is disposed in a small diameter cylindrical portion 83, and a paper The filter 2, which is a filter, is placed in the upper portion having a large diameter, with its lower end peripheral edge placed on the tapered surface 82 of the case 8.

The filter 2.3 is installed in the container 5 by putting the case 8 attached thereto into the container 5 and supporting the case 8 by the annular protrusion 51 of the ring body 50 as described above. . Also, filter 1 has its case 10
It is placed in the container 5 with the upper end flange portion locked to the upper edge of the case 8, and the wire mesh handle 13 is passed through the notch in the container 5 and the ring body 50, so that the knob 14 can be opened. It is located in the space 75 of the handle 7.

Furthermore, at this time, case 10 in filter 1 is
It goes inside the filter 2 housed inside the case 8. This prevents the filter 2, which is a paper filter, from falling down.

Now, in the oil purifier configured in this way, the oil used for tempura etc. is poured in with the lid 4 removed, but at this time, the oil is first fried through the filter 1 which is a wire mesh. After relatively coarse impurities are removed, it passes through filter 2, and at this time, after removing sludge-like fine impurities, it passes through filter 3. The oil that has reached the filter 3 is diffused as it passes through the plate 34 with openings and the second filtering material 31, and while passing through the layer of the first filtering material 33, which is activated carbon, coloring components and other oils are removed. Odors, etc. are adsorbed and removed. and each filter 1.2.3
The oil that has passed is stored in an oil storage tank located at the bottom of the container 5.

The second filter material 32 disposed downward is made thicker than the second filter material 31 disposed above, for example, as shown in FIG. It is preferable to set the speed to be slower than the filter medium 31. Although oil passes quickly through the upper second filter material 31, it takes time to pass through the lower second filter material 32, so the adsorption action by the first filter material 33 should be sufficiently performed. This is because it can be done.

When reusing the oil stored in the oil storage tank, it is only necessary to open the oil filling lid 41 instead of opening the entire lid 4. When the oil filler lid 41 is opened, the oil filler lid 41 is held in that state by the spring 46, so that the oil filler lid 41 will not close even if the container 5 is tilted. Then, if you tilt the container 5,
The oil passes through the passage between the bulge 54 and the case 8 and flows out from the spout. The oil filler fitting 55 that guides oil flowing out from the spout is provided to prevent oil from dripping from the spout, and even if oil drips on the outer surface of the oil filler fitting 55, this The oil enters the gap 57 between the oil filler fitting 55 and the inner surface of the bulge 54, and returns to the oil storage tank through a small gap between the lower end of the oil filler fitting 55 and the protrusion 56 on the inner surface of the bulge 54. .

This prevents oil from dripping onto the outer surface of the container 5.

[Effects of the Invention] As described above, in the present invention, the second filters are arranged on at least both sides of the layer of the first filter material and are respectively located between the first filter material and the pair of plates. Since at least one peripheral edge of the material is caulked and fixed to the case, the granular first filter material and its fine powder leak out between the fine and soft second filter material and the case. It is a material that does not create gaps, and therefore can reliably prevent the first filter material and its fine powder from getting mixed into the purified oil, and the first filter material This prevents the oil from being mixed into the purified oil and making it impossible to reuse the oil.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of one embodiment of the present invention, Figure 2 (a)
(b), (c), and (d) are longitudinal cross-sectional views showing the assembly order of the above, Fig. 3 is a longitudinal cross-sectional view of an oil purifier using the same, Fig. 4 is a perspective view of the same; A filter, 30 is an oil purifying case, 31.32 is a second filter material, 33 is a first filter material, 34 is a plate, and 37.38 is a hole. Figure 2 [b] Agent Patent attorney Stone 1) Long seven (Qω's (('+ ω C1')H)

Claims (4)

[Claims] (1) A case is composed of a pair of plates having an opening and a peripheral wall connecting the two plates, and a granular first
and a second filter material that is finer in particle size and softer than the first filter material, the second filter material being arranged on at least both sides of the first filter material layer. 1
A filter for an oil purifier, characterized in that at least one peripheral edge of the second filter material located between the filter material and the pair of plates is caulked and fixed to the case. (2) The filter for an oil purifier according to claim 1, wherein the peripheral edge of the second filter material located on the purified oil inlet side is caulked and fixed to the case. (3) The filter for an oil purifier as set forth in claim 1, wherein the peripheral edge of the second filter material located on the purified oil outlet side is caulked and fixed to the case. (4) The filter for an oil purifier according to claim 1, wherein one of the plates has a cylindrical shape with a bottom integrally provided with a peripheral wall.