JPH1099613A - Filtration device for fuel and oil for industrial machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a filtration device, make it light in weight, and at the same time facilitate filter replacement by mounting a first and a second filter on a pedestal and providing a paper filter which is detached from the top of the first filter, on the first filter and a cartridge filter which is detachable from the bottom of an upper lid part, on the second filer respectively. SOLUTION: This filtration device is provided with a paper filter 14, a first filter 1 comprising a transparent case 11, a cartridge filter 27 with a finer mesh than the first filter and a second filter 3 with an indicating manometer 24 on an upper lid part 28 are arranged on a pedestal 35. Further, the paper filter 14 and made detachable from the upper part of the first filter 1, while the cartridge filter 27 is made detachable from below the upper lid part 28 of the cartridge filter 27. In addition, the device is equipped with a pump 2, a temporarily mounting part 7 provided for the replacement of the paper filter 14, a hose 30 for the communication among pipes filters 1, 3 and the pump 2 and a joint part 29 with a three-way valve connected to a hose 36. One of the ends of the joint part 29 communicates with the second filter 3 and the other with a discharge pipe directly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fuels such as light oil, lamp A heavy oil and the like used for industrial machines such as civil engineering machines, construction machines and machine tools, and oils such as engine oils, hydraulic oils, turbine oils, etc. The present invention relates to a fuel / oil filtration device for industrial machinery for removing impurities from waste.

[0002]

2. Description of the Related Art The applicant has previously disclosed a fuel filter having a structure shown in FIGS. 5 and 6 as a device for filtering impurities such as water, waste liquid and waste from fuel such as light oil, kerosene, and heavy oil A for industrial machinery in a tank. Device B was developed. That is, in the drawing, 60 is a frame, 61 is a filter, 62 is a pump, 65 is a steel nozzle for suction, 66 is a steel nozzle for discharge, 67 is a wheel, 68 is a hose, and 69 is a handle. The fuel filtration device B in this tank inserts a suction steel nozzle 65 and a discharge steel nozzle 66 into a fuel tank of an industrial machine, and removes dirty fuel in the fuel tank from the suction steel nozzle 65 through a hose 68. , Into the filter 61 and swirl the fuel inside, the filter element 61
The liquid is guided from the upper part of c to the pump 62 and returned to the tank from the steel nozzle 66 for discharge through the hose 68. The water is circulated in the apparatus, and impurities such as water, waste liquid, rust, mud, and dust are precipitated on the bottom surface of the case 61a of the filter 61. The impurities are similarly adhered by the filter element 61c of the filter 61, and A tray is prepared on the lower surface, and the drain portion 61e of the lower lid 61b is opened from below to remove impurities. Similarly, in order to replace the filter element 61c to which impurities are attached, the case 61a is removed from under the fixed upper lid 61d, the filter element 61c suspended from the upper lid 61d is removed, and a new filter element 61c is replaced. The fuel filtering device B in the fuel tank includes a
The filter 61 is provided, and the fuel is sucked by the negative pressure of the pump 62. The waste liquid and waste impurities easily adhere to the filter 61. In addition, since water, waste liquid and waste impurities settled on the lower surface of the case 61a are removed from below, the water, waste liquid and waste impurities are easily separated from the fuel, and there is an advantage that the impurities can be easily removed.

[0003]

However, since the filter B of the fuel filter can be replaced by removing the case from below, the height of the device is increased and the fuel filter B cannot be mounted on a service car. A complaint came out of the user. Further, the fuel filtration device B is intended only for fuels such as light oil, kerosene, and heavy oil A of industrial machinery, and in addition, there has been a demand for a filtration device applicable to engine oil and the like. The present invention has been made in view of such problems, and the object thereof is, in addition to a conventional fuel filtration device, a filtration device capable of filtering oil, and further,
It is an object of the present invention to provide a fuel and oil filtering device for industrial machinery which is small and light, can be quickly switched to fuel or oil, and can be easily replaced with a filter, which can be mounted on a service car or the like.

[0004]

In order to achieve the above object, a fuel / filtration device according to the present invention comprises a suction pipe and a discharge pipe inserted into a tank, a pedestal, and an inverted U-shape on the pedestal. On the opposite frame, on the pedestal, a first filter consisting of a transparent case with a paper filter inside, a cartridge filter of a paper filter finer than the first filter, and an indicating pressure gauge on the upper lid were provided. The second filter, the pump, a temporary storage portion provided for replacing the paper filter of the first filter, and a hose that communicates with each nozzle, each filter and the pump, the paper filter from the top of the first filter The cartridge filter can be attached and detached from below the upper lid, and the hose that communicates with the pump has a three-way switching valve. Connect the cement portion, the one to the second filter, made to communicate with the other directly discharging steel nozzle.

[0005]

[Function] Since it is small and lightweight, it can be carried on a service car or the like.

[0006] Since a two-stage filtration system having a first filter and a second filter having different grain sizes of the paver filter is used, oil can be filtered in addition to fuel.

The paper filter of the first filter can be detached from above.

[0008] The case of the first filter is made transparent so that the separation of fuel, oil and water, waste liquid and waste can be seen at a glance.

[0009] A pressure gauge is provided on the second filter so that the time for replacing and replacing the filter can always be known.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The fuel / oil filtering device A (hereinafter, referred to as the present device) of the present invention mainly includes a pedestal 35, a frame 9,
It comprises a first filter 1, a second filter 3 with an indicating pressure gauge, a pump 2, a suction steel nozzle 4 which is a suction pipe, and a discharge steel nozzle 5 which is also a discharge pipe. The appearance is low and the shape is almost cubic. Then, the pump 2 is disposed in the rear path of the first filter 1, and the first filter 1
Is of a type in which the oil is sucked and discharged at a negative pressure. Also, a configuration employing a two-stage filtration system of a first filter 1 having a standard paper filter suitable for filtering fuel and a second filter 3 having a fine-grained paper filter suitable for filtering oil. It is. Further, the first filter 1 is of a type in which fuel or oil and impurities are separated by rotating the fuel or oil and causing natural sedimentation, thereby separating the impurities by the specific gravity difference of the impurities.

Next, details of the structure of the apparatus A will be described. The pedestal 35 is rectangular, and the end is bent downward to form a flange 35a.
Is formed. A notch 35b is formed at the installation position of the first filter 1. This is because the fuel or oil is easily drained from below the first filter 1 and the tray 6 is easily placed under the pedestal 35. Notch 35b
A guide rail 22 having a U-shaped cross section is provided on the pedestal near both sides of the filter so that the filter case 11 of the first filter 1 can be easily slid by holding the handle 20 by hand. This is for facilitating cleaning of the case 11 by pulling the case 11 forward from the apparatus A. Pedestal 35
The U-shaped frame 9 of the pipe is fixed to the upper right and left sides by welding or the like, and the side surfaces of the ends are fixed to the pedestal 35 with the both ends down. The casters 40 with stoppers and the casters 41 are fixed by screwing the portions 40a and 41a. This frame 9 is formed low, and is convenient for moving the apparatus A manually. Of the four side surfaces formed by both frames 9, a strip-shaped guide plate 8 is attached to three sides except for the front surface to surround the device A in a square shape. Note that the entire lower surface of the guide plate 8 is bent inward to form a flange 8a, and a hand is placed below the guide plate 8 to facilitate movement of the apparatus A. In FIG. 1, the first filter 1 is provided in a quarter portion, which is a substantially right half of the front surface of the base 35.
Is installed, and the 1/4 portion which is the left half of the front surface is used as a storage room 10 for wiring and the like. Further, a pump 2 is installed in the entire area of a half of the rear surface, and its periphery is covered with a wall surface. A plurality of grills (not shown) communicating with the atmosphere are formed on one side surface of the wall surface. In order to isolate the first filter 1 from other components, two wall surfaces 42 and 43 are provided so as to cover substantially the entire length of the first filter 1.

The first filter 1 is a filter for filtering both fuel and oil. The first filter 1 includes a transparent cylindrical filter case 11, a paper filter 14 provided in the filter case 11, an upper lid 15 covering the upper surface of the filter case 11, and a lower lid 12 covering the lower surface. Is configured on the upper surface of the upper lid portion 15,
Fuel or oil sent from a tank (not shown) via the suction steel nozzle 4 and the hose 30 is fed into the filter case 11 via the elbow pipe 54 and the paper filter 14 to the pump 2 via the fuel or oil. An elbow pipe 51 for sending out oil, an upper suction pressure release valve 16 in the first filter 1, and a handle 18 for replacing the paper filter 4 are further provided. There is provided a duct 46 for discharging the fuel or oil contaminated in the communication filter case 11 in a swivelable manner, and a U-shaped support portion 47 for suspending and supporting the paper filter 14. Reference numeral 45 denotes an operation unit for operating the paper filter 14 to fix or remove it from the upper cover 15, and reference numeral 44 denotes a coil-shaped spring that urges the paper filter 14 upward so as not to lower. The paper filter 14 uses 50-micron filter paper and is suitable for fuel filtration and oil primary filtration. The inside of the lower lid portion 12 is inclined in a mortar shape, and a large through-hole 12a is provided at the bottom so that impurities of fuel and oil are easily discharged. Further, a drain portion 12 communicating with the through hole 12a is provided on the lower surface side.
b is projected downward, and the lever 12c is formed so that impurities in the filter case 11 can be discharged or the discharge can be stopped. A groove 1 slidable on the guide rail 22 is provided on the lower surface of the lower lid 12.
2d is formed, and the lower end of the handle 20 is fixed.
The upper end of the handle 20 is a free end. To fix the first filter 1 to the pedestal 35, the tip of the support rod 21 erected from the pedestal 35 on both sides of the first filter 1 is passed through holes 18 a provided at both ends of the handle 18, and the screw at the tip is screwed. Wing nut 19 is fastened and fastened.

A panel surface 37a is provided in the upper part of the storage room 10, and the panel surface 37a is used to operate the apparatus A.
Tumbler switch 23 for stopping and panel surface 37a
A cord 24a provided with a switch 24 for operating and stopping the same device A as the tumbler switch 23 at the end thereof, and a plug 2 at the end to take electricity from a power source.
5 or an extendable cord 25a provided with an outlet is provided. The code 24a provided with the switch 24 is
By extending the cord 24a, the device A can be operated and stopped directly at a work place such as an oil tank. The storage room 10 is a space for storing a cord 24a provided with a switch or a cord 25a provided with a plug or the like when the device A is not used.

A shelf 37 on which the tray 6 is placed is formed on the upper surface of the panel surface 37a. Above the shelf 37, a pair of temporary placement sections 7 on which the paper filter 14 of the first filter 1 is placed.
Are formed. That is, as shown in FIG.
The paper filter 14, in which the upper cover 15 and the support 47 are integrated, is attached and detached from above the filter case 11 and moved, and the paper filter 14 is moved from above.
It is inserted between the temporary placement sections 7 and the upper lid 15 is placed on the temporary placement section 7. On the shelf 37, there is provided a fuel or oil tray 6 which is put in from the front and set on the shelf 37, and the fuel or oil dripping from both the paper filter 14 of the first filter 1 and the cartridge filter of the second filter 3 is provided. It has a size that can be covered. The space between the lower surface of the paper filter 14 or the second filter 3 and the shelf 37 has a space that is easy to replace the paper filter by manual operation.

The second filter 3 is provided on one side of the temporary placement section 7,
It is suspended and fixed to a pair of holding parts 52 having one ends fixed. The second filter 3 includes an upper lid portion 28 fixed to the holding portion 52 with a screw, a cartridge filter 27 having a paper filter which is manually screwed to the lower surface of the upper lid portion 28 by being manually rotated and detachably mounted. It is formed with. The paper filter of the cartridge filter 27 is disposable and uses 10-micron filter paper, which is finer than the first paper filter 14 and is suitable for filtering oil. An indicating pressure gauge 26 is provided on the upper lid 28 so that the internal pressure of the cartridge filter 27 can be measured.

The pump 2 includes first and second filters 1,
A 400 watt trochoid pump is used so that three can operate simultaneously.

Reference numeral 4 denotes a suction steel nozzle which is a suction pipe, and reference numeral 5 denotes a discharge steel nozzle which is a discharge pipe. 30, 31, 32, 33, 34, 36 are hoses connecting the nozzles 4, 5, the filters 1, 3 and the pump 2. That is, one end of the hose 30 communicates with the suction steel nozzle 4 via the elbow pipe 48, and the other end is detachable via the coupler 53 to the elbow pipe 54 provided on the upper lid 15 of the first filter 1. Is in communication with One end of the hose 31 communicates with the pump 2 via an elbow pipe 48, and the other end removably communicates with the elbow pipe 51 of the first filter 1 via a coupler 53. One end of the hose 32 communicates with the pump 2, and the other end communicates with the T-joint 29. One end of the hose 33 is T
The other end is connected to the elbow pipe 50 of the upper lid 28 of the second filter 3. One end of the hose 34 is detachably connected to an elbow tube 48 by a coupler 5.
3 and the steel nozzle 5 for discharge through
It communicates with the elbow pipe 54 of the second filter 3 via the cheese 39 of the mold pipe. T-type joint 29
Has a three-way ball valve 29a inside, and can be selected by the switching lever 38 so that the fuel or oil from the pump 2 passes directly through the steel nozzle 5 for discharge without passing through the second filter 3 or the second filter 3. It is formed as follows. The other end of the hose 36 connected to one end of the T-shaped joint 29 is connected to a cheese 39 provided in the middle of the hose 34.

Next, the operation method of the present invention will be described. When you want to extract impurities such as water, waste liquid and waste from fuels such as light oil, kerosene, and heavy oil A in the tank. Only the first filter 1 is used. The switching lever 38 of the T-shaped joint 29 in FIG. 2 is set up vertically as indicated by the dotted line, and the fuel is directly sent from the pump 2 to the discharge steel nozzle 5 without passing through the second filter 3. (Dotted arrow) The suction steel nozzle 4 and the discharge steel nozzle 5 are inserted into the tank, and the ends of the nozzles are separated from each other. Code 2
5a is pulled out, the plug 25 is connected to a power source, and the cord 24a is pulled out similarly to turn on the switch 24. Pump 2
Rotates, and the inside of the first filter 1 becomes negative pressure. After a while, the fuel in the tank is sucked into the suction steel nozzle 4. The fuel is discharged from the duct 46 into the filter case 11, and the fuel turns according to the direction of the end of the duct 46. During turning, water is more important than fuel,
Impurities such as waste liquid and waste precipitate downward. The fuel separated from the precipitated impurities is further filtered by the paper filter 14, and the fuel reduced in impurities is sent to the pump 2 through the hose 31 and discharged from the T-shaped joint 29 through the hose 34. From the steel nozzle 5 for use. The discharged fuel is sucked in again, circulated and filtered many times, and impurities are removed. In this case, the filter case 1 of the first filter 1
Since 1 is transparent, the state of fuel contamination, the state of separation, and its progress can be seen at a glance.

When it is desired to extract water, waste liquid and waste impurities from oils such as engine oil, hydraulic oil and turbine oil in the tank. When the switching lever 38 of the T-shaped joint portion 29 in FIG. 2 is tilted horizontally as indicated by the solid line, the three-way ball valve 29a is switched, and the oil flows from the pump 2 through the second filter 3 to the discharge steel nozzle 5. I will send it. In this case, it passes through not only the second filter 3 but also the first filter 1, so that it is a two-stage filtration method. The suction steel nozzle 4 and the discharge steel nozzle 5 are inserted into the tank, and the ends of the nozzles are separated from each other. When the switch 24 is turned on, the pump 2 rotates, the pressure inside the first filter becomes negative, and oil in the tank is sucked into the steel nozzle 4 for suction. The oil is supplied to the duct 46
Is discharged into the filter case 11 and the duct 46
The oil turns according to the direction of the end of the oil. During the turn,
Water, effluents and waste impurities, which are more critical than oil, precipitate downward. The oil separated from the precipitated impurities is filtered by a paper filter 14 (first filtration). The oil having impurities which are not filtered is sent to the pump 2 through the hose 31 and the T
Proceed to 3 and enter the cartridge filter 27 of the second filter 3. Since it passes through the cartridge filter 27 of 10 μm which is finer than the first filter 1, finer impurities leaked by the first filter 1 are filtered by the second filter 3 (secondary filtration). Impurities in the oil are more separated. The oil that has exited the cartridge filter 27 passes through the cheese tube 39, the hose 34, and the discharge steel nozzle 5, is sucked again from the tank through the suction steel nozzle 4, and is circulated and filtered many times. First, the first filter 1 filters the coarse impurities, and the second filter 3 filters the finer impurities. The oil is gradually removed, so that no excessive load is applied to each filter. Is efficient. In this case as well, it always passes through the inside of the filter case 11 of the first filter 1, but since the case 11 is transparent, it is possible to see at a glance the state of contamination, the state of separation and the progress of the passage of oil. The second filter 3 is for oil, but is not limited to oil, and may pass fuel. Usually, it is sufficient for the fuel to pass through the first filter 1. When passing through the second filter 3, the fuel can be filtered with higher precision than normal filtration.

Replacement of the paper filter of the first filter. Pump 2 motor stopped. Or power off. Drain the oil in the filter case 11. The tray 6 is set in the notch 35b. The couplers 53, 53 of the hoses 30, 31 connected to the first filter 1 are removed from the elbow tubes 54, 51, and the hoses 30, 31 are separated. Next, the thumb screw 19
When the handle 18 is removed from the support bar 21 and lifted, the upper lid 15 fixed to the handle 18, the paper filter 14, the support member 47 supporting the paper filter 14, and the duct 46 are integrated. Lift.
This is placed on the adjoining temporary placement section 7 as shown in FIG. Next, the operation unit 45 is turned and pulled downward. The coiled spring 44 urged upward is compressed against the urging force so that the paper filter 14 is not pulled by the support portion 47.
Pull out horizontally. And a new paper filter 1
4 is set in reverse order. Again, the handle 18 is held by hand and mounted in the filter case 11 to complete the replacement.

Replacement of the second filter. The filter is a disposable cartridge type. When the indicating pressure gauge 26 is attached and the pointer enters the red zone, the second filter 3 must be replaced. This is because the filter is clogged, the internal pressure increases, and the oil suction function cannot be exhibited. As shown in FIG. 4, the second filter 3 has the upper lid 28 fixed to the holding portion 52 using screws, and the cartridge filter 2
7 is rotated and removed from the upper lid portion 28 by hand. Then, a new cartridge filter 27 is attached. Move and replace only the cartridge filter. Others do not need to be moved.

How to remove impurities such as water, waste liquid and waste in the first filter. The pan 6 is placed under the notch 35b on the lower side of the first filter 1, the upper suction pressure release valve 16 is opened, air is supplied, and the lever 12c of the drain portion 12b is opened.
Is turned, the inclination angle of the drain portion 12b is increased,
2a is increased, and an upper suction pressure release valve 16 is provided so that air pressure is applied to the oil surface from above,
Water, waste liquid, and impurities of wastes settled below the filter case 11 can be smoothly removed. When unplugging, case 1
The transparency of 1 makes it easy to understand the separation state of impurities at a glance and to perform the operation easily. After draining the impurities of water, waste liquid and waste, the drain portion 12b is closed, and the impurities accumulated in the tray 6 are carried to a waste liquid treatment tank for disposal.

Cleaning of the filter case of the first filter. In order to clean the filter case of the first filter, a process of replacing the paper filter of the first filter is performed, and then the handle 20 integrated with the case 11 is pulled forward. 22 and slide to a position where it can be easily carried. Thereafter, the case 11 is carried and cleaned at a predetermined cleaning place.
The case 11 can be moved with the upper lid 15 attached.

[0024]

Since the present invention is configured as described above, the following effects can be obtained.

This device is smaller and lighter than the conventional type, and is easy to carry because it can be mounted on a service car. Particularly short, it is stable.

Since the filter case of the first filter is transparent, the turbid state of fuel or oil can be easily grasped during filtration.

Since the present apparatus employs a two-stage filtration system, it can be applied not only to fuel filtration but also to oil filtration. In particular, since oil is roughly filtered in one stage and densely filtered in two stages, the filtering function of the filter is highly accurate and efficient.

Since the two steel nozzles are inserted into the fuel or oil tank, impurities adhering to the inner wall are also removed, and they are also suitable for cleaning the tank.

Since the second filter is provided with the indicating pressure gauge, the replacement time of the cartridge filter can be known at a glance.

The cartridge filter can be easily turned on and off by turning it by hand.

The replacement of the paper filter of the first filter is performed by removing the two wing nuts at the upper part of the apparatus and moving the paper filter to the temporary placement part, so that the work is easy.

Since the lower drain portion of the first filter has a larger inclination, the through hole 12a is larger, and an upper suction pressure release valve for air supply is provided, impurities can be removed smoothly.

Since the filter case can be removed from the apparatus, the case can be easily cleaned.

One of the operation switches of the pump is fixed to the apparatus, and one of the two types is extendable, so that either type may be used. In the latter case, a pipe is installed in the oil tank. The operation switch can be easily operated on the spot.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a fuel / oil filtration device for industrial machines of the present invention.

FIG. 2 is an explanatory diagram of a main part of FIG. 1;

FIG. 3 is a perspective view of a main part in which a paper filter of a first filter is mounted on a temporary placement part.

FIG. 4 is a perspective view of a main part showing a second filter.

FIG. 5 is an overall perspective view of a conventional fuel filtration device.

FIG. 6 is an explanatory diagram of a conventional fuel filtration device.

[Explanation of symbols]

 Reference Signs List A fuel / oil filtering device B fuel filtering device 1 first filter 2 pump 3 second filter 4 steel nozzle for suction 5 steel nozzle for discharge 6 tray 7 temporary placement part 26 indicating pressure gauge 29 T-shaped joint part 35 pedestal 37 shelf

Claims (1)

[Claims] 1. A transparent case having a suction pipe and a discharge pipe inserted into a tank, a pedestal, a frame opposed to the pedestal in an inverted U shape, and a paper filter inside the pedestal. The first filter, a second filter having a cartridge filter of the paper filter finer than the first filter and an indicating pressure gauge in the upper lid portion,
A pump and a temporary holder provided for replacing the paper filter of the first filter, and a hose configured to communicate with each pipe, each filter and the pump, and make the paper filter detachable from the upper part of the first filter, An industry wherein the cartridge filter is detachable from below the upper lid, a joint having a three-way valve is connected to a hose connected to the pump, and one is connected to the second filter and the other is directly connected to the discharge pipe. Machine fuel
Oil filtration device.