JP3760791B2 - Filtration device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a filtering device used for a burner of an oil combustor or the like.
[0002]
[Prior art]
The oil combustor sucks up the fuel in the oil tank with the fuel pump and supplies it to the burner.If dust or moisture mixed in the oil tank is sucked into the fuel pump, the fuel pipe or spray nozzle is clogged, This can cause the fuel pump to become unusable. For this reason, the fuel pipe is equipped with a filtration device.
[0003]
In general, fuel filtration filters are made of metal or synthetic resin nets, paper with added permeation performance, etc. that have been flattened or finished in a cylindrical shape, or those that have been bent into irregularities. Some filter materials can be manufactured to fine meshes of about 200 mesh. And, the filter material using oil-dedicated paper with added permeation performance contains a water-generating material mainly composed of silicon, and has a performance to repel water and constitutes a filtration filter. is there.
[0004]
In addition, the filtration filter attached to the inlet side of the spray nozzle, which tends to be hot, of a pressure spray burner, has recently pressed bronze-made particles of about 0.5 mm to locally pressurize and deform the particles. There are some which are integrated and used as a filtration filter.
[0005]
[Problems to be solved by the invention]
By the way, when water is mixed in the fuel of the oil combustor, clogging of the fuel pump and the spray nozzle occurs, which causes a serious trouble. For this reason, it is indispensable to install an oil / water separation filter. However, when serving as a filtration filter as an oil / water separation filter, conventionally, a water-generating material mainly composed of silicon has been impregnated into the oil-only filtration filter made of paper. Things have been commercialized.
[0006]
However, the filtration filter subjected to the water generation treatment has poor durability because the water generating material is removed during use, and it is impossible to maintain the water generation performance for a long period of time. For this reason, it is always necessary to replace the filter, but it is almost impossible to specify the exact time of replacement, and the oil filter performance deteriorated due to dirt or water generation performance deteriorated as it is. In many cases, it was troublesome and unusable.
[0007]
In addition, when water treatment is performed on a filter formed of a metal mesh, the water generating material does not penetrate and adheres to the surface of the filter material, and in this state, the water generating material fills the passage gap. As a result, it is impossible to generate water with such a metal filter material, so water problems cannot be avoided.
[0008]
[Means for Solving the Problems]
The filtration device to be improved by the present invention includes a bottomed cylindrical body in which synthetic resin powder particles are integrally heated by heating in a mold and have a plurality of voids therein, and an opening of the bottomed cylindrical body. And a lid having a communication hole for an oil supply pipe that is closely fixed to the portion. And it is comprised so that the flow path which guides the oil as fuel which passes through the several space | gap of a bottomed cylinder from the outer side of a bottomed cylinder to an oil supply pipe may be formed. In the present invention, the bottomed cylindrical body is formed integrally by molecular polymerization of only the contact surfaces of the synthetic resin powder particles having a particle diameter adjusted to 30 to 50 microns, while allowing oil to pass between the particles. A plurality of voids having a size that prevents the passage of water is formed, and the outer surface thereof is smoothed. In addition, a fixing screw portion is integrally formed at the end of the bottomed cylinder, and a ring-shaped screw portion is provided on the lid to which the fixing screw portion of the bottomed cylinder is screwed. Screw the fixing screw part of the body.
[0009]
Further, in another filtration device of the present invention, a strainer having an inflow hole from the oil tank and a communication hole to the oil supply pipe is provided, and a lid provided with the inflow hole and the communication hole of the strainer is arranged in the outer peripheral direction of the communication hole. A ring-shaped screw part is provided to separate the inflow hole and the communication hole, and a synthetic resin powder whose particle diameter is adjusted to 30 to 50 microns is molecularly polymerized by heating the contact surfaces in the mold to maintain a certain level. A bottomed cylinder with a smooth and smooth surface is formed, and a fixing screw part is integrally formed at the end of the bottomed cylinder at the time of molding, and the fixing screw part is screwed into the ring-shaped screw part of the lid. Configure.
[0010]
In still another filtration device of the present invention, a synthetic resin powder having a water generating property adjusted to a particle size of 30 to 50 microns is heated and polymerized on the contact surfaces in a mold, and there is a void inside and a constant thickness. Constructed in a bottomed cylinder with a smooth surface, and provided with a lid with a communication hole to the oil supply pipe, and the open end of the bottomed cylinder integrated with the synthetic resin powder is in close contact with the lid The communication hole is fixed to the bottomed cylinder, and the bottomed cylinder is positioned in the flow path to the oil supply pipe.
[0011]
Synthetic resins can be manufactured from rice-sized pellets for use in injection molding to fine powders. Among these, there are synthetic resins that can generate water generation performance as a material after the material is wet with oil. In this invention, the synthetic resin powder having such a water-generating property is filled in a mold as a powder, and only a contact portion of the synthetic resin powder is integrated by performing molecular polymerization by heating by applying a predetermined temperature. The synthetic resin powder melts and does not fill the mold, and only the contact portion is polymerized so that voids are formed between the particles, and oil passes through the voids to obtain a filter effect.
[0012]
In particular, by using synthetic resin powder having a particle diameter adjusted to 30 to 50 microns, when water tries to pass through the voids between the particles, the water adhering to the synthetic resin particles fills the gaps and stops the passage of water. Therefore, it is possible to obtain a filtration device that allows the filter member to have water generation without performing a special water generation treatment later. Further, since the water generation effect is obtained from the properties of the synthetic resin, the conventional deterioration does not occur.
[0013]
In addition, the mold filled with synthetic resin powder is constructed so that the surface on the inflow side of the filter member is finished to a smooth surface, so that the surface of the filter member becomes smooth, and the passage of dust and water is easy. It can be peeled off and cleaned easily, and can be used for a long time.
[0014]
In addition, a filter member that is molecularly polymerized only at the contact portion made of synthetic resin powder has the same hardness as a synthetic resin member made by injection molding and can be handled in the same way. By combining it with a lid, it can be easily attached to an oil supply pipe or the like without using special parts.
[0015]
【Example】
As a conventional filtration filter for a spray nozzle, the bronze particles are heated to a certain temperature to create a state of being easily deformed, and these particles are pressed with a press, and the bronze particles are integrated while partially deforming the shape. , And finished with a thick metallic filter. If the bronze particles are made fine, the fine particles will not be crushed when pressurized, and voids will not be formed. If the press pressure is lowered so that voids can be formed, the bronze fine particles will peel off and will not function as a filter. In the prior art, a uniform and fine filter material corresponding to 200 mesh of a wire mesh could not be produced.
[0016]
This invention pays attention to the synthetic resin which can be made into fine particles instead of the bronze particles, and further, the filter is manufactured using a synthetic resin having water generation as the synthetic resin to be used.
[0017]
Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a powder formed of a polyethylene synthetic resin having a water generating property, and the synthetic resin powder 1 as a filter raw material is previously adjusted to a particle diameter of 30 to 50 microns. Then, the synthetic resin powder 1 is injected and filled into the mold, and then the optimum temperature determined by the type of the synthetic resin powder 1 is maintained for a predetermined time until the contact surfaces can undergo molecular polymerization. These particles are obtained by finishing the filter material by molecular polymerization of the contact surfaces.
[0018]
1a is a gap between the synthetic resin powders 1 formed by molecular polymerization of the contact surface of the synthetic resin powder 1, and a gap 1a is formed in a lump of synthetic resin made by a mold, and the entire synthetic resin is filtered. It functions as a material. Then, when the size of the synthetic resin powder 1 of polyethylene used is adjusted to 30 to 50 microns specified in the present invention, the filtration space by the gap 1a formed by molecular polymerization of the contact surfaces of the powder having the particle diameter is molecularly polymerized. The size of is about 300 mesh in terms of wire mesh. Further, since the synthetic resin powder 1 constitutes a filter material with a constant thickness by a mold, there is no filtration space that goes straight like a wire mesh, and only oil can be reliably filtered.
[0019]
Furthermore, when the particle diameter of the synthetic resin powder 1 is adjusted to 30 to 50 microns as specified in the present invention using polyethylene, if water tries to pass through the voids 1a between the particles along with the oil, the synthetic resin powder has a water generating property. Water adheres to the resin particles, and the adhering water fills the gap 1a and stops the passage of water.
[0020]
If the particle diameter of the powder 1 is larger than the diameter specified in the present invention, the gap 1a becomes large and the passage of water cannot be prevented, and water penetrates into the filter member and passes along with the oil. On the other hand, when the particle diameter of the synthetic resin powder 1 is smaller than 30 microns, the passage of oil is suppressed together with the passage of water, and the function as a passage filter becomes insufficient.
[0021]
Furthermore, since the filter of the present invention uses a synthetic resin powder 1 having water repellency as a raw material, no special manufacturing process for water generation treatment is required, and even a net-like filter is conventionally made of paper. However, a great effort was made to make the filter mesh uniform, and this improved the accuracy of the filter, which was reflected in the filter price. In this invention, the selection of the filter material and the particles of the synthetic resin powder 1 were performed. The accuracy of the filter material is determined by the selection of the diameter, and a large amount of high-performance filter can be manufactured at a very low cost.
[0022]
The appearance of this filter is exactly the same as that of a synthetic resin part produced by injection molding. This is far from the concept of conventional filter filters, and it is a finish that no one notices unless it is pointed out that it is a filter. In addition, since the filter member itself can be handled as a part made of synthetic resin, the structure used for mounting general plastic parts can be diverted so that the filter can be installed smartly. Such a mounting is not possible with a filter and is not performed at all.
[0023]
Furthermore, since the mold of the present invention is configured so that the surface on the inflow side becomes smooth when molded into a filter, the filter manufactured by this method has a smooth outer surface of the filter member. Cleaning of dust and water adhering to can be performed very easily as compared with a wire mesh or paper filter member.
[0024]
As described above, the filter member manufactured according to the present invention can be finished into a free shape by changing the shape of the mold, and has the same hardness as a synthetic resin part manufactured by general injection molding. Can be handled.
[0025]
In the figure which shows a use condition, 2 is the bottomed cylinder which comprised the synthetic resin powder 1 as a raw material with the filter member with fixed thickness, and 3 closely_contact | adheres the opening part of the bottomed cylinder 2 which is a filter member A lid 4 is a fuel pipe for supplying fuel to the oil combustor.
[0026]
5 is a communication hole provided in the lid 3 of the bottomed cylindrical body 2, 5a is an Owling mounted inside the communication hole 5, and 6 is an oil tank of an oil combustor. Then, the bottomed cylindrical body 2 and the lid 3 are integrated in the outer circumferential direction of the communication hole 5, and the communication hole 5 of the lid 3 is fitted to the tip of the oil supply pipe 4 that extends into the oil tank 6. The airtightness is maintained between the oil supply pipe 4 and the ring 5a.
[0027]
Reference numeral 7 denotes a fuel pump attached in the middle of the fuel supply pipe 4. The fuel pump 7 sucks fuel through a fuel pipe extended into the bottomed cylindrical body 2, and contains dust or water in the fuel. Fuel that has been filtered and cleaned as it passes through the bottomed cylinder 2 can be sent to the oil combustor.
[0028]
FIG. 3 showing the state of use is an embodiment in which a filter is incorporated in a filter provided in the middle of the fuel pipes 4 and 4 ′ drawn from the oil tank 6, 8 is a strainer, and 8 a is a transparent filter of the strainer 8. This is a cup, and the frame of the strainer 8 is composed of a lid 3 connected to an oil tank 6 side and an oil supply pipe 4 'continuous on the oil combustor side, and a filter cup 8a. The communication hole 5 connected to the pipe 4 ′ is located at the center of the lid 3.
[0029]
9 is an open / close valve provided in the oil flow path from the oil tank 6 to the filter cup 8a of the strainer 8 by being incorporated in the lid 3, and 10 is an inflow hole for oil that has passed through the open / close valve 9 into the filter cup 8a. .
[0030]
3a is a ring-shaped screw portion that is positioned in the outer peripheral direction of the communication hole 5 of the lid 3 and separates the communication hole 5 and the inflow hole 10; 2a is an opening end of the bottomed cylinder 2; A fixed screw portion integrally formed at the time of formation, and the fixed screw portion 2a of the bottomed cylindrical body 2 formed by molecular polymerization of the contact surfaces of the synthetic resin powder 1 by heating is screwed with the screw portion 3a of the lid 3. The bottomed cylinder 2 constituting the filtration filter is attached in the filter cup 8a, and the oil in the oil tank 6 flows into the gap between the filter cup 8a and the bottomed cylinder 2 from the inflow hole 10,避退oils is sent from the communicating hole 5 to the oil supply pipe 4 'passes through the cylindrical body 2.
[0031]
For this reason, the dust and water contained in the oil sent from the oil tank 6 cannot pass through the bottomed cylindrical body 2 and accumulate in the filter cup 8a, so that the filter cup 8a can be removed from the lid 3 and discarded.
[0032]
As described above, the bottomed cylindrical body 2 formed by the polymerization of the contact surfaces of the synthetic resin powder 1 produced in the present invention is expected to be strong and strong like a synthetic resin part obtained by conventional injection molding. Therefore, the bottomed cylindrical body 2 having the fixing screw portion 2a can be easily manufactured by making the shape of the mold so that the fixing screw portion 2a can be configured at the end of the bottomed cylindrical body 2 in advance. Therefore, if the fixing screw portion 2a is attached to the screw portion 3a of the lid 3 attached to the fuel pipe 4, the bottomed cylindrical body 2 as a filter material can be easily attached to the lid 3. is there.
[0033]
Further, even if the bottomed cylinder 2 is not provided with the fixing screw portion 2a, the bottomed cylinder 2 can be locally melted and bonded to the lid 3 by heating the flange surface of the synthetic resin material to a high temperature. The lid 3 and the bottomed cylindrical body 2 can be easily integrated.
[0034]
【The invention's effect】
Conventionally, it was manufactured by impregnating a filter made of paper with a water generating material such as silicon, but the oil-water separation pass filter made by this manufacturing method would take off the water generating material during use. The expected oil / water separation performance and filtration performance could not be maintained for a long time.
[0035]
On the other hand, the present invention forms a synthetic resin having water repellency as a filter material in powder form, fills a mold that can be molded to a predetermined thickness with a synthetic resin powder adjusted to a predetermined particle diameter, and matches the synthetic resin Since the contact surfaces of the synthetic resin powder were molecularly polymerized by the temperature treatment, the synthetic resin powder was completed as a filter because the internal contact surfaces joined together without forming a gap, forming voids between the particles. .
[0036]
The synthetic resin constituting the oil / water separation filter is a water-repellent material, and the particle size is adjusted to about 30 to 50 microns. Therefore, the size of the void formed when the synthetic resin powder is polymerized is the same as that of the synthetic resin powder. It is determined by the particle size, and when water tries to pass through the voids, the water adheres without stagnation on the surface of the synthetic resin particles, and the water blocks the voids and prevents the passage of water. Further, this blocking force does not change because it is a property of the synthetic resin powder 1, and for the first time, a durable oil-water separation filter can be put into practical use.
[0037]
In addition, the synthetic resin powder functioning as a filter is formed with a predetermined thickness by molecular polymerization of the contact surfaces. Therefore, the synthetic resin powder is stronger than a filter material produced by a conventional mesh and does not deform. The filter with which it piled up easily passed fine and fine fibrous dust, but the filter of the present invention not only does not allow water to pass through, but also does not form a linearly continuous filtration gap, so it can reliably It can be collected.
[0038]
In addition, the material that composes the filter is a water-repellent synthetic resin adjusted to a particle size of 30 to 50 microns, and it can be easily manufactured mainly by heat treatment, so it is very cheap compared to conventional products made by complicated processes. Furthermore, it has a full-fledged water filter function and dust filter function at a low price, and is a very practical invention.
[0039]
Further, since the mold of the present invention is configured so that the surface on the inflow side is finished to be a smooth surface when molded into a filter, the filter manufactured by this method has a synthetic resin member made by injection molding and the appearance and feel. The filter is incredible unless pointed out, and the filter's outer surface is smooth, so the dust and water adhering to this oil / water separation filter can be easily cleaned, and the wire mesh Compared to filter materials made of paper and paper, it is very easy.
[0040]
According to the present invention, it is possible to obtain a filtration device that allows the filter member to have water generation without performing a special water generation treatment later. Further, since this water generation effect is obtained from the properties of the synthetic resin, the conventional deterioration does not occur.
[0041]
In addition, since the filter member that is molecularly polymerized only at the contact portion composed of the synthetic resin powder according to the present invention has the same hardness as the synthetic resin member made by injection molding and can be handled in the same way, this shape is used as a low-cylinder body. By finishing and combining with the lid by screwing, it can be easily attached to an oil supply pipe or the like without using special parts.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view of an essential part of a filtration filter made by the manufacturing method of the present invention.
FIG. 2 is a cross-sectional view of an essential part showing a use state in which a filtration filter made by the manufacturing method of the present invention is attached to an upper surface plate of an oil tank.
FIG. 3 is a cross-sectional view of an essential part showing a use state in which a filtration filter made by the manufacturing method of the present invention is incorporated in an oil tank strainer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Synthetic resin powder 1a Space | gap 2 Bottomed cylinder 2a Fixing screw part 3 Lid 3a Screw part 4 Oil supply pipe 5 Communication hole 5a Owling 6 Oil tank 7 Fuel pump 8 Strainer 8a Filter cup 9 On-off valve 10 Inflow hole

Claims (2)

A bottomed cylindrical body (2) in which particles of the synthetic resin powder (1) are heated and integrated in a mold and have a plurality of voids inside;
A lid (3) having a communication hole (5) for an oil supply pipe (4 ') that is tightly fixed to the open end of the bottomed cylindrical body (2);
A flow path that guides oil as fuel that passes through the plurality of gaps of the bottomed cylindrical body (2) from the outside of the bottomed cylindrical body (2) to the oil supply pipe (4 ') is formed. In the filtration device
The bottomed cylindrical body (2) is formed by integrally polymerizing only the contact surfaces of the particles of the synthetic resin powder (1) whose particle diameter is adjusted to 30 to 50 microns. Are formed with a plurality of voids of a size that allows the oil to pass but prevents the passage of water, and the outer surface is smooth,
A fixing screw portion (2a) is integrally formed at the end of the bottomed cylindrical body (2),
The lid (3) is provided with a ring-shaped screw portion (3a) to which the fixing screw portion (2a) of the bottomed cylindrical body (2 ) is screwed,
A filtering device formed by screwing the fixing screw portion (2a) of the bottomed cylindrical body (2) into the screw portion (3a). A strainer (8) having an inflow hole (10) from the oil tank (6) and a communication hole (5) to the oil supply pipe (4 ');
The lid (3) provided with the inflow hole (10) and the communication hole (5) of the strainer (8) is positioned in the outer peripheral direction of the communication hole (5), and the inflow hole (10) and the communication hole (5). A ring-shaped screw part (3a) for separating
Synthetic resin powder (1) with particle diameter adjusted to 30-50 microns is molecularly polymerized by heating the contact surfaces in the mold to form a bottomed cylinder (2) with a smooth surface with a certain thickness. And
A fixed screw part (2a) is integrally formed at the end of the bottomed cylindrical body (2) during molding,
A filtering device formed by screwing the fixing screw portion (2a) into the ring-shaped screw portion (3a) of the lid (3).

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