JPH077701U - Fuel filter with water separation filter - Google Patents

Abstract

(57) [Summary] [Purpose] The water separation filter and the fuel filter are integrated to facilitate the layout of mounting on the vehicle.
An object of the present invention is to provide a fuel filter with a water separation filter that can reduce piping cost by making it unnecessary to connect a fuel hose. A filter device in which a fuel filter 2 having a filter element 22 housed inside a cylindrical container 17 having a closed bottom and a water separation filter 1 are integrated,
The tubular mounting portion 20 of the tubular container 17 is screwed onto the discharge pipe threaded portion 11 of the water separation filter 1, and the fuel filter 2 and the water separation filter 1 are assembled via the packing 21.
The inlet 12 to the fuel filter 2 was located above the inlet pipe 13 of the water separation filter 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fuel filter with a water separation filter for an internal combustion engine mounted on a vehicle, and more particularly to a fuel filter with a water separation filter that is mounted on a diesel engine to separate water from fuel and then pass through the fuel filter.

[0002]

[Prior art]

 Generally, fuel injection pumps for diesel engines suffer from rust due to moisture and wear due to dust. In particular, recently, fuel injection pumps that are weak in water are used, and a water separation filter is required even in countries with good fuel conditions. A water separation filter is essential for vehicles exported to areas with high water content, and it has a water separation function. A fuel filter is used. However, in a fuel filter with a water separation function, the amount of water retained is insufficient, so the separated water separation filter and fuel filter are connected by a fuel hose and used in combination to remove water with the water separation filter. The system uses a fuel filter to filter dust after supplying sufficient water to supply clean fuel to the engine.

[0003]

[Problems to be solved by the device]

 However, when the conventional water separation filter and the fuel filter are used separately, the layout for mounting on the vehicle and the fuel hose connecting the water separation filter and the fuel filter are required, and the labor and piping cost of piping are required. There was a problem.

This invention solves the above problems, and makes the layout of mounting on a vehicle easy by integrating the water separation filter and the fuel filter, and connecting the fuel hose to each other. The purpose is to provide a fuel filter with a water separation filter that can reduce piping costs unnecessarily.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a filter device in which a fuel filter having a filter element housed inside a cylindrical tubular container with a closed bottom portion and a water separation filter are integrated into a cylindrical tubular container. The tubular mounting portion is screwed to the threaded portion of the discharge pipe of the water separation filter, and the fuel filter and the water separation filter are assembled via packing, and the inlet port to the fuel filter is the water separation filter. It is located at the upper part of the entrance pipe.

[0006]

[Action]

 With this configuration, the fuel filter can be easily integrated into the fuel filter and the water separation filter by simply screwing the tubular mounting part of the fuel filter to the threaded portion on the lower outer periphery of the discharge pipe of the water separation filter. Not.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of a fuel filter with a water separation filter according to the present invention. In the figure, 1 is a water separation filter, 2 is a fuel filter, 3 is a float sensor, and 4 is a pump.

The water separation filter 1 has a closing plate 8 having an opening 5 formed in an upper portion, a discharge hole 6 from the fuel filter 2 provided in the center of the lower portion, and an inlet hole 7 to the fuel filter 2. , A cylindrical outer cylinder 9, a discharge pipe 10 through which fuel is discharged in the center, a discharge pipe screw portion 11 at a lower portion of the discharge pipe 10, and an inlet pipe 13 to a fuel filter having an inflow port 12 at an upper portion. A water discharge hole 14 provided in the lower part of the outer cylinder 9, an opening / closing valve 15 for opening and closing the water discharge hole 14, and a pipe 16 for discharging water from the opening / closing valve 15.

The fuel filter 2 has a structure in which a base plate 18 on the upper surface of a cylindrical container 17 whose bottom is closed is integrally attached by caulking. A plurality of fuel supply ports 19 communicating with the fuel inlet pipe 13 are opened in a peripheral portion of the base plate 18, and are fixed by being screwed into a discharge pipe screw portion 11 of the discharge pipe 10 in a central portion. A cylindrical mounting portion 20 that also serves as a discharge port is vertically provided integrally, and is attached to the water separation filter via a packing 21 on the outer peripheral upper surface of the base plate 18. A filter element 22 is incorporated in the cylindrical container 17, and the filter element 22 is fixed by sandwiching a pleated and cylindrical filter member 25 between upper and lower end plates 23 and 24. The upper end plate 23 is liquid-tightly fitted around the cylindrical mounting portion 20. A compression spring 26 is interposed between the lower end plate 24 and the inner bottom surface of the cylindrical container 17 to constantly urge the filter element 22 to a raised position.

In the float sensor 3, a lower opening 27 is connected to an upper part of the outer cylinder 9 of the water separation filter 1, and a upper part is closed by a lid 29. A switch 30 and a switch 31 are provided.

The pump 4 includes a hand pusher 32, a coil spring 33, and a pump body 34. The water separation filter 1 is attached to the lower portion of the pump 4 via a packing 35.

With the above-described structure, the fuel filter 2 can be connected to the fuel filter 2 simply by screwing the tubular mounting portion 20 of the fuel filter 2 onto the discharge pipe threaded portion 11 of the lower outer periphery of the discharge pipe 10 of the water separation filter 1. The water separation filter 1 is easily integrated via the packing 21 and does not require a fuel hose. In the fuel filter with a water separation filter thus integrated, when the fuel containing water passes from the fuel tank through the connecting pipe into the tubular container 17 of the water separation filter 1, the water is separated here. Since the separated water has the supply port 12 at the upper part of the inlet pipe 13, it is held at the lower part of the cylindrical container 17 having a sufficient capacity, and then the fuel is sent to the fuel filter 2. The fuel filtered and cleaned by the fuel filter 2 passes through the exhaust pipe 10 and is delivered to the engine.

When the separated water accumulates in the cylindrical container 17 and increases, the water enters the cylindrical body 28 through the lower opening 27 of the float sensor 3, the float 30 floats, and as a result, the switch 31 turns on. It is activated and signals that water must be drained from the water separation filter 1. At this time, the on-off valve 15 that opens and closes the moisture discharge hole 14 is opened, and moisture is discharged from the moisture discharge hole 14 of the cylindrical container 17 through the pipe 16.

When the fuel supply to the engine is not sufficient, the pump 4 manually pushes the hand pushing portion 32 to suck the fuel from the fuel tank to the fuel filter with the water separation filter. 2 and 3 show another embodiment, in which the float sensor 3 is provided in the cylindrical container 17, the discharge pipe 10 is located in the lateral direction, and the water discharge hole is further provided. 14, the on-off valve 15, and a pipe 16 for discharging water from the on-off valve 15 are provided above the water separation filter 1, and when the separated water accumulates in the cylindrical container 17 and increases, the float sensor 3 When water enters the cylinder 28 from the lower opening 27, the float 30 floats and rises, and the switch 31 operates to notify that water must be discharged from the water separation filter 1, the opening / closing When the valve 15 is opened and the pump 4 is operated, water is sucked from the tip of the water discharge pipe 36 and discharged from the pipe 16, which has an advantage that the on-off valve 15 can be operated from the upper portion.

FIG. 4 shows still another embodiment. In this embodiment, the fuel filter 2 is attached to the lateral portion of the water separation filter 1, so that the fuel filter 2 can be attached and detached in various ways.

[0016]

[Effect of device]

 As described in detail with reference to the above embodiments, in the fuel filter with a water separation filter of the present invention, the fuel filter has a tubular mounting portion of the fuel filter on the threaded portion of the lower outer periphery of the discharge pipe of the water separation filter. The fuel filter and the water separation filter can be easily integrated by simply screwing them together, and the layout for mounting on the vehicle can be facilitated. Since no fuel hose is required, the piping cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a fuel filter with a water separation filter according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view of a fuel filter with a water separation filter according to another embodiment.

3 is another cross-sectional view of the embodiment of FIG.

FIG. 4 is a side view of a fuel filter with a water separation filter according to another embodiment.

[Explanation of symbols]

 1 Water Separation Filter 2 Fuel Filter 3 Flow Sensor 4 Pump 10 Discharge Pipe 11 Screw Part 20 Cylindrical Mounting Part

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Claims (1)

[Scope of utility model registration request] 1. A filter device in which a fuel filter having a filter element accommodated in a cylindrical tubular container with a closed bottom and a water separation filter are integrated into a tubular mounting portion of the tubular container. The fuel filter and the water separation filter are assembled through a packing by being screwed to the discharge pipe screw portion of the water separation filter, and the inlet port to the fuel filter is located above the inlet pipe of the water separation filter. A fuel filter with a water separation filter characterized by being made.