JPH0326900Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an oil strainer, and in particular, to an oil strainer that can remove minute floating dust contained in oil.

[Prior art]

Generally, in the case of an oil strainer used in an engine torque converter, as shown in FIG.
A screen 24 made of wire netting made of brass, stainless steel, etc. is disposed between 1 and 22 to divide the inside of the casing 23 into two chambers. The oil stored in the reservoir flows in and passes through the wire mesh screen 24, and during this passage, floating dust such as abrasion powder and metal powder contained in the oil is removed. The oil flows out through an outflow hole 21a provided in the upper casing 21 and is supplied to downstream equipment.

[Problem that the invention attempts to solve]

However, in the case of the oil strainer configured as described above, since the screen made of wire mesh is used to remove floating dust contained inside the oil, the size of the mesh must be kept below a predetermined size. Therefore, the screen is useless for floating dust that is smaller than this mesh and passes through it, and as a result, there is a small amount of floating dust inside the oil. However, there was a problem in that the valves etc. would lock up and stop working.

This invention solves the problems of the conventional ones as mentioned above, and can also remove floating dust in the oil, thereby preventing the occurrence of locks in the valves. The purpose is to provide an oil strainer that can.

[Means for solving problems]

In order to solve the above problems, this invention provides a screen holding member inside a casing consisting of an upper and lower casing to divide it into two upper and lower chambers, an outflow hole in the upper casing, and an outflow hole in the lower casing. an inflow hole is provided respectively, and the screen holding member is provided with a screen holding portion and a valve seat portion that cooperates with either one of the upper and lower casings to constitute a valve, and the screen holding portion of the screen holding member is further provided with a valve seat portion that cooperates with either one of the upper and lower casings to form a valve. A screen is disposed inside the casing to close off the space between the two chambers, and a cotton-like material made of metal fibers, synthetic fibers, etc. is stored in the chamber on the lower casing side.

[Effect]

By adopting the above-mentioned means, this idea
It is possible to reliably remove minute floating dust inside the oil and supply oil with these removed, thereby reliably preventing valves from locking due to minute dust. Furthermore, since larger sludge is removed by catching it with a cotton-like material made of metal fibers, synthetic fibers, etc. before it reaches the screen, the life of the screen itself can be extended. .

〔Example〕

Embodiments of this invention shown in the drawings will be described below.

FIG. 1 shows an oil strainer according to this invention, in which a casing 3 is composed of an upper casing 1 made of resin and a lower casing 2 made of resin combined with the upper casing 1. A screen holding member 4 is supported in a sandwiched manner between the upper and lower casings 1 and 2.

This screen holding member 4 has a screen holding part 5 that holds a screen 7, which will be described later, and a valve seat part 6 that cooperates with the upper casing 1 to form a valve 13. The screen 7 held by the member 4 is made of filter paper or nonwoven fabric, unlike conventional ones made of wire mesh, and this screen 7 is bent into a bellows shape and is stored in the screen holding part 5 of the screen holding member 4. has been done.

In addition, when forming the screen 7, if it is a filter paper, use a mixture of linter pulp, polyester, etc. fibers, papermaking to a certain thickness, and binding with a phenolic or acrylic binder. However, in the case of non-woven fabric, one made of synthetic fibers such as polyamide and polyester is used.

On the other hand, the valve seat portion 6 of the screen holding member 4
is a wire mesh screen 1 to block it.
Further, a spring 11 is provided in a portion of the upper casing 1 facing the upper end portion, and a valve body 12 is provided which is biased against the valve seat portion 6 by this spring 11. The valve 13 is composed of the following.

Further, a cotton-like material 14 made of metal fibers, synthetic fibers, etc. is stored in the chamber formed by the lower casing 2 and the screen holding member 4, and
A wire mesh 15 is provided to prevent the cotton-like material 14 from coming out from the inflow hole 2a provided in the lower casing 2.

In the oil strainer configured as described above, as in the conventional one, piping is provided to the outflow hole 1a provided in the upper casing 1, and suction is carried out by a pump (not shown). Then, the oil stored in the oil pan flows through the inflow hole 2a provided in the lower casing 2, and before this oil reaches the screen 7, it is separated from the metal fibers, synthetic fibers, etc. At this time, the large sludge contained in the oil is removed, and the oil from which the large sludge has been removed reaches the screen 7.

After the larger sludge is removed, the floating dust contained in the oil is removed by the screen 7, and the screen 7
Since the screen is made of filter paper or nonwoven fabric, the mesh is very fine, unlike conventional wire mesh screens, and can remove minute floating dust.

In the above case, the screen 7 is made of only filter paper or non-woven fabric, but when considering the bellows-shaped portions, they are pressed by oil from both sides and come into contact with each other during suction by the pump. If this prevents oil from passing through the contact area, thereby reducing the amount of oil passing through and potentially causing insufficient oil to be supplied by the pump, the screen A filter member 8 made of filter paper or non-woven fabric and a supporting member 9 made of a wire mesh for preventing the filter members 8 from coming into close contact with each other are superposed on each other, and the filter member 8 is placed opposite to the surface on which pressure is applied. The screen holding member 4 may be housed in the screen holding portion 5 of the screen holding member 4 with the supporting member 9 located on the side thereof.

As a result, when the pump is not in operation, the screen 7 is in the state shown in FIG. 2, but when the pump is in operation, pressure is applied and the screen 7 is in the state shown in FIG. supporting member 9
This eliminates the possibility that the peaks of the filter member 8 will come into contact with each other.

In addition, since the screen 7 has a bellows shape, it is possible to increase the area through which oil passes, so although the amount of oil passing through per unit is smaller than that of a screen made of wire mesh, the overall It is possible to obtain the same amount of outflow as when using a wire mesh screen.

Furthermore, since larger sludge is removed with a cotton material 14 made of metal fibers, synthetic fibers, etc. before reaching the screen 7, clogging of the screen 7 can be prevented and floating dust can be removed for a long period of time. It is something that can be done.

The fluffy material 14 made of metal fibers, synthetic fibers, etc. is made fluffy so that the passage resistance does not increase when oil passes through it.

Furthermore, if the amount of oil passing through the screen 7 decreases and too much oil accumulates in the chamber before passing through the screen 7, the valve 13 is activated by the pressure acting at this time. Spring 1
The valve body 12 is raised against the biasing force of the upper casing 1, whereby the oil flows out from the outlet hole 1a of the upper casing 1 through the wire mesh screen 10, thereby causing an oil shortage situation. It prevents you from doing so.

[Effect of idea]

By configuring this idea as described above,
The filtration accuracy has been significantly improved and even minute floating dust located inside the oil can be removed, and the oil from which these have been removed can be supplied to equipment. By locking the sludge, it is possible to reliably prevent the occurrence of a situation where the sludge has sludge. Moreover, since the larger sludge can be removed before it reaches the screen, the life of the screen itself can be extended. Even if the pressure before reaching the screen is high, the valve will operate and oil will be supplied through the screen installed in this valve, causing a shortage of oil supplied to the equipment. It has excellent effects such as being able to reliably prevent this.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing an oil strainer according to this invention, Figs. 2 and 3 are schematic views showing the states before and after pressure is applied to a screen that can be used in this invention, and Fig. 4 is a schematic sectional view showing an oil strainer according to this invention. It is a partially cutaway schematic perspective view showing a conventional oil strainer. DESCRIPTION OF SYMBOLS 1, 21... Upper casing, 1a, 21a... Outflow hole, 2, 22... Lower casing, 2a, 22a... Inflow hole, 3, 23... Casing, 4... Screen holding member, 5... Screen holding part, 6... Valve seat Part, 7
...Screen, 8...Filtering member, 9...Supporting member, 1
0, 24...Wire mesh screen, 11...Spring, 1
2... Valve body, 13... Valve, 14... Cotton-like material, 15... Wire mesh.

Claims (1)

[Claims for Utility Model Registration] (1) A screen holding member 4 is arranged inside a casing 3 consisting of upper and lower resin casings 1 and 2 to divide it into two upper and lower chambers, and the upper casing 1 has an outflow hole 1a. Further, the lower casing 2 is provided with an inflow hole 2a, and the screen holding member 4 is provided with a screen holding portion 5 and a valve 1 in cooperation with either the upper or lower casings 1, 2.
Further, a screen 7 is provided inside the screen holding part 5 of the screen holding member 4 to close off the space between the two chambers, and a valve seat part 6 constituting the lower casing 2 side is provided. Inside the room, cotton-like materials made of metal fibers, synthetic fibers, etc. 1
An oil strainer characterized by storing 4. (2) The screen 7 disposed inside the screen holding part 5 of the screen holding member 4 is
The oil strainer according to claim 1, which is made of filter paper or nonwoven fabric and has a bellows shape. (3) The screen 7 disposed inside the screen holding part 5 of the screen holding member 4 is
The oil strainer according to claim 1, wherein a filter member 8 made of filter paper or nonwoven fabric and a mesh support member 9 are polymerized and formed into a bellows shape.