JPH06327909A - Capsule type filter device for liquid - Google Patents

Abstract

PURPOSE:To provide a capsule type filter device for liq. with the capsule filter easily exchanged without spilling a liq. or contaminating the clothes of an operator and capable of preventing the leakage of a liq. from the base due to residual pressure in a pipeline. CONSTITUTION:This filter device is provided with a base 1 having a mounting capsule mounting part 12 having connection ports 13 and 14 with a pipeline and the inlet 15 and outlet 16 communicating internally with the ports 13 and 14 and the outlet 27 and outlet 28 capable of being inserted into the mounting part and connected to the inlet 15 and outlet 16 of the base 1. The device is further furnished with the tank-shaped capsule filter 2 contg. a filter medium 24 for filtering a liq. introduced from the inlet 29 and sent toward the outlet 28 and the self-closing valves 33 to 36 for opening the inlets 15 and 27 and the outlets 16 and 28 when the capsule filter 2 is set in the capsule mounting part 12 of the base 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid capsule type filter device, which is mainly used for filtering and cleaning pressure oil and the like in a lubricating oil filter device and a hydraulic circuit of industrial hydraulic equipment. .

[0002]

2. Description of the Related Art Generally, a filter device (filter) used for this kind of hydraulic equipment includes a filter main body connected to a pipe and attached thereto, and a filter element removably housed and held in the main body. It consists of and. The filter element includes an inner cylinder core having a large number of holes, a filter medium surrounded by an outer periphery of the inner cylinder core in a state of being bent in a pleat shape (zigzag shape) in order to secure a large filtration area, In many cases, the cartridge type is composed of an outer cylinder core having a large number of holes arranged on the outer periphery thereof, a bottom plate fitted to the upper and lower ends thereof, and a top plate with a flow port. This filter element is taken out from the inside of the filter body and replaced with a new one after being used for a predetermined period.

[0003]

By the way, in such a conventional filter device, when the filter element is replaced,
When extracting the used filter element from the inside of the filter body and bringing it to the disposal site, since the filter element is in a naked state with liquid such as oil attached, the liquid spills and pollutes the surroundings, It was troublesome to handle, such as getting the workers' hands and clothes dirty.

During the replacement work of the filter element, the residual pressure in the pipe to which the filter body is connected,
There is a problem that pressure oil overflows from the filter body due to potential (height) energy. For this reason, the valve provided before and after the piping of the filter body must be closed before the filter element is pulled out.
The present invention has been made in view of the above circumstances, and an object of the present invention is that a filter is a capsule type and can be in a sealed state at the time of attachment / detachment, without spilling liquid such as oil or soiling clothes of workers. A very simple capsule for liquids that can be easily replaced and there is no risk of the liquid overflowing due to residual pressure or position (height) energy in the pipe even if the valve in the pipe is not closed during the replacement work. A type filter device is provided.

[0005]

In order to achieve the above-mentioned object, a liquid capsule type filter device of the present invention has an inlet connection port and an outlet connection port connected to a liquid conducting pipe, and the inlet thereof. A base having a capsule mounting portion having an introduction port internally communicating with the connection port and an outlet port internally communicating with the outlet connection port, and a base that can be detachably set to the capsule mounting part of the base, and an introduction port of the base. A tank-shaped capsule filter that has an inlet and an outlet connected to the outlet and has a filter material in a state of filtering the liquid that flows from the inlet and flows toward the outlet, and the capsule filter and the base. And a self-closing valve which is attached to each of the inlet and the outlet of the container and which is opened by setting the capsule filter on the capsule mounting portion of the base. A composed.

[0006] It is desirable that the capsule mounting portion of the base has a housing and a lid which are capable of accommodating the capsule filter in a detachable manner and have excellent rigidity. Further, the capsule filter may have a handle for inserting / removing the capsule mounting portion of the base. Further, it is desirable that the constituent member of the capsule filter is made of polymer resin and the filter medium is made of natural fiber.

[0007]

According to the liquid capsule-type filter device having the above-mentioned structure, if the capsule filter containing the filter medium is inserted and set in the capsule mounting portion of the base connected to the liquid conducting pipe, the base and the capsule filter can be set. The mutual inlet and outlet valves are opened, and the inlet and outlet outlets are in communication with each other. In this state, the liquid flows into the capsule filter from one pipe through the inlet connection port of the base through the introduction port, the liquid is filtered by the filter medium in the capsule filter, and the purified liquid is discharged from the outlet port to the base. It returns to the inside and is led out to the other pipe from the outlet connection port.

When the capsule filter is taken out from the base when the filter is replaced after a predetermined period of use, each inlet and outlet of the capsule filter and the base are closed by a self-closing valve. With this, the used capsule filter becomes a sealed tank state, the residual liquid content does not spill outside, and the worker can easily carry it to the disposal site without polluting his hands or clothes. Also on the base side,
Since the inlet and outlet are closed by valves, the liquid overflows due to residual pressure and position (height) energy in the pipes without the troublesome work of closing other valves in the pipe. There is no need to worry about it coming out, and the replacement work of the capsule filter can be performed very easily.

By configuring the capsule mounting portion of the base with a housing and a lid having a high rigidity so that the capsule filter can be removably housed therein, the tank-shaped casing of the capsule filter to be replaced is pressure resistant. It is possible to use materials with low strength or thin ones,
It is easy to manufacture and economical even if it is thrown away.

Further, this capsule filter has a handle for inserting / removing the capsule mounting portion of the base,
Even if it is a relatively large capsule, it can be easily inserted and removed and transferred to and from the base without holding it, making it easy to handle. Further, by configuring the constituent members of the capsule filter from a polymer resin and the filter medium from natural fibers, it is possible to incinerate it after use, and almost no residue is left.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the liquid capsule type filter device of the present invention will be described below with reference to the drawings. First, FIG. 1 is a vertical cross-sectional view showing a state in which a capsule filter 2 is attached to a base 1, and FIG. 2 is an exploded cross-sectional view showing a state in which the capsule filter 2 is detached from the base 1 with a part thereof omitted.

The base 1 is also called a header or the like depending on the installation direction, and is a molded product which is made of a polymer resin material such as polyester, polypropylene or polyethylene and has excellent heat resistance and pressure resistance. . The base 1 includes a base plate portion 11 and a capsule mounting portion 12 above the base portion 11.
It consists of and.

The substrate portion 11 has a thick disk-like shape,
It has an inlet connection port 13 and an outlet connection port 14 which are connected to liquid conducting pipes (not shown) at both ends. The capsule mounting portion 12 has an inlet port 15 and an outlet port 16 that are independent from each other and project from the upper surface of the central portion of the substrate 11. The introduction port 15 is the substrate portion 11
The inlet connection port 13 is internally communicated via the inside, and the outlet port 16 is formed so as to be internally communicated with the outlet connection port 14 via the substrate part 11. The inlet 15 and the outlet 16 have a downward circular valve seat portion (stepped portion) at the inner depth.

Further, the capsule mounting portion 12 has a vertically elongated cylindrical housing 17 integrally projecting from the upper surface of the substrate portion 11 so as to include the inlet 15 and the outlet 16. The housing 17 can accommodate the capsule filter 2 therein so that the capsule filter 2 can be inserted and removed. Also, this housing 1
A lid 18 is detachably fitted to the upper end of the lid 7.
The lid 18 is joined to the upper end flange portion of the housing 17 and fastened and held by a plurality of bolts 19. The housing 17 and the lid 18 have a relatively thick structure that firmly holds the capsule filter 2 housed and set therein and is excellent in rigidity strength.

The capsule filter 2 has a relatively thin casing 21 in the shape of a closed cylindrical tank, and an inner cylinder core 22 having a large number of holes 22a concentrically provided in the casing 21. These are also integrally molded from a polymer resin material having excellent heat resistance as described above. An operating handle 23 is formed on the top surface of the top plate of the casing 21.

The capsule filter 2 includes a casing 2
A filter material 24 is built in the inside of the unit 1. The filter material 24 is made of a natural fiber non-woven fabric, a filter paper, or the like, which is folded in a large number in a pleat shape (zigzag shape) in order to increase the filtration area. Has been done.
The upper and lower ends of the filter medium 24 are closed and held by the flange portions 25 and 26 so as to prevent liquid leakage.

The capsule filter 2 has an inlet port 27 and an outlet port 28 in the bottom plate portion of the casing 21. By inserting and setting the capsule filter 2 into the capsule mounting portion 12 of the base 1, the inlet 27 and the outlet 28 are provided with a sealing material 29 such as an O-ring in the inlet 15 and the outlet 16 on the bottom surface thereof. Connect in the state of fitting through. The inlet port 27 and the outlet port 28 also have an upward circular valve seat portion (stepped portion) inside.

The inlet 27 communicates with the outer peripheral space of the filter medium 24 in the casing 21 by a partition plate 30 provided in the lower portion of the inner cylindrical core 22, and the outlet 28 has the partition plate 30.
It communicates with the internal space of the inner cylinder core 22 through the communication hole 31 formed in the above.

Further, valves 33, 34, 35 and 36 are attached to the inlets 15 and 27 and the outlets 16 and 28 of the base 1 and the capsule filter 2, respectively. Each of these valves 33, 34, 35, 36 has a structure in which the valve rod is integrally projected above and below the valve body, and has springs 33a, 34a, 35a, 36a for biasing the valve rods in the closing direction. The spring 33a of the valve 33, 34 on the base 1 side,
34a is weaker than the springs 35a and 36a of the valves 35 and 36 on the capsule filter 2 side.

In the liquid capsule type filter device having such a structure, the inlet connection port 13 of the substrate portion 11 of the base 1 is connected to one of the liquid conducting pipes (not shown), and the outlet connection port 14 is connected to the other. By doing so, the base 1 is installed and fixed in an upward state. In the housing 21 of the capsule mounting portion 12 above the base 1,
As shown in FIG. 2, the capsule filter 2 incorporating the filter medium 24 therein.
Is inserted from above and set in the state shown in FIG. 1, and a lid 18 is put on it to fasten and hold it. Now you are ready.

The capsule mounting portion 12 of the base 1
In the process of inserting the capsule filter 2 into the housing 21 of No. 1, first, the valve rod upper ends of the valves 33 and 34 on the base 1 side are joined to the lower ends of the valve rods of the valves 35 and 36 on the capsule filter 2 side, respectively, The springs 35a and 36a of the valves 35 and 36 on the capsule filter 2 side are connected to the valve 3 on the base 1 side.
Since it is stronger than the springs 33a, 34a of 3, 34, the valves 33, 34 on the side of the base 1 are pushed down against the springs 35a, 36a to open. And the valve 33 on the base 1 side,
When the valve 34 is fully opened, the valve 35, 36 on the capsule filter 2 side is opened so as to be pushed up against the springs 35a, 36a.

Thus, the valves 33 and 34 and the valves 35 and 36
Automatically opens, and the inlet 15 and outlet 16 on the base 1 side are connected to the inlet 27 and outlet 2 on the capsule filter 2 side.
8 are connected to each other via a sealing material 29, and their inlets 15 and 27 and outlets 16 and 28 are in communication with each other.

In this state, the liquid such as pressure oil sent from one of the pipes flows into the casing 21 of the capsule filter 2 from the inlet connection port 13 of the base 1 through the introduction ports 15 and 27, and from there, the filter medium. While being filtered and cleaned by 24, it flows from the hole 22a of the inner cylindrical core 22 to the center, and from there, through the communication hole 31 of the partition plate 30 to the outlet 2.
It returns to the inside of the base 1 via 8 and 16 and is led out from the outlet connection port 14 to the other pipe.

When the filter medium 24 has reached the end of its useful life after being used for a predetermined period of time, the filter medium 24 is replaced. In this case, the lid 18 is first removed and the handle 23 is gripped.
Is pulled out upward from the inside of the housing 17 of the base 1. With this, the inlet 27 and the outlet 2 on the capsule filter 2 side.
8 is disengaged from the inlet 15 and the outlet 16 on the base 1 side, but the valves 35 and 3 on the capsule filter 2 side near the point 8
6 is first introduced by the springs 35a and 36a.
Automatically shut off. As a result, the used capsule filter 2 is in a sealed tank state, the residual liquid content does not spill outside, and the worker can easily carry it to the disposal site without polluting his hands or clothes.

When the capsule filter 2 is removed, the valves 33 and 34 on the base 1 side automatically close the inlets 15 and 16 by the urging of the springs 33a and 34a. with this,
Even if the troublesome work of closing other valves in the pipe is not done, there is no concern that the liquid will overflow from the base 2 due to the residual pressure in the pipe or the position (height) energy, and the capsule filter replacement work Can be performed very easily.

Although liquid pressure such as pressure oil acts inside the capsule filter 2 during the above-described filtration operation, the capsule mounting portion 12 of the base 1 is excellent in rigidity and strength so that the capsule filter 2 can be inserted and removed. With the housing 17 and the lid 18, the tank-shaped casing 21 itself of the capsule filter 2 can be made of a material having low pressure resistance or a thin wall, which is easy to manufacture and economical even if it is disposable. Target.

Further, the capsule filter 2 has the handle 23 for inserting / removing the capsule mounting portion 12 of the base 1, so that the capsule filter 2 can be held as a relatively large capsule without being held. Inserting / removing / transporting the base 1 can be done easily by grasping the handle, and the handling becomes easy.

Further, the casing 2 of the capsule filter 2
Since the structural members such as 1 and the inner cylinder core 22 are made of polymer resin and the filter medium 24 is made of natural fiber, it can be incinerated after use and almost no residue remains.

The present invention is not limited to the above-mentioned embodiment. For example, the base 1 is used as a header to connect to a pipe and fixed downward so that the capsule filter 2 can be inserted and removed from below. You can use it to set it. In this case, when the capsule filter 2 is inserted or removed, the liquid leaks from the inlet port 15 and the outlet port 16 of the base 1 for a moment, but the valve is closed immediately, which is not a big problem. Further, the portions other than the filter material of the base 1 and the capsule filter 2 are made of polymer resin, but other materials such as metal may be used. In addition, various changes may be made without departing from the scope of the present invention.

[0030]

Since the capsule-type filter device for liquid of the present invention is constructed as described above, the filter is of a capsule type and can be sealed when detaching and replacing, so that liquid such as oil can be spilled or clothes of workers can be worn. It is possible to easily perform replacement work without polluting the pipe and prevent overflow of liquid due to residual pressure or position (height) energy in the pipe even if the valve in the pipe is not closed during the replacement work. It will be very simple.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a liquid capsule type filter device according to an embodiment of the present invention in a use state.

FIG. 2 is a partially omitted exploded cross-sectional view showing a state in which the capsule filter is separated from the base of the liquid capsule-type filter device of the above embodiment.

[Explanation of symbols]

1 ... Base, 2 capsule filter, 1a ... Hole, 2 ... Filter medium, 3 ... Outer cylinder core, 3a ... Hole, 6 ... Filter medium fiber outflow prevention net.

Claims (4)

[Claims] 1. A capsule mounting having an inlet connection port and an outlet connection port connected to a liquid conducting pipe, and having an inlet port internally communicating with the inlet connection port and an outlet port internally communicating with the outlet connection port. It can be set to the base with a part and the capsule mounting part of this base so as to be removable
And a tank-shaped capsule filter having an inlet and an outlet connected to the inlet and the outlet of the base, and having a filter material built-in in a state of filtering the liquid flowing from the inlet to the outlet. A capsule type for liquids, which is equipped with a self-closing valve that is attached to each inlet and outlet of the capsule filter and the base and that is opened by setting the capsule filter in the capsule mounting portion of the base. Filter device. 2. The capsule-type liquid filter according to claim 1, wherein the capsule mounting portion of the base has a housing and a lid which are capable of accommodating the capsule filter in a detachable manner and have excellent rigidity. apparatus. 3. The capsule filter device for liquid according to claim 1, wherein the capsule filter has a handle for inserting and removing the capsule mounting portion of the base. 4. The liquid capsule filter device according to claim 1, wherein the constituent member of the capsule filter is made of a polymer resin, and the filter medium is made of a natural fiber.