JPH0335370Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filter for filtering impurities in a liquid.

[Prior art]

Generally, a filter for removing impurities from a liquid uses a filter body made by layering wire mesh and filter paper on a bottom plate in a liquid tank. However, it was inefficient, so the applicant improved it and filed an application, which was published in 1973.
It was announced and registered under No. 42139 and exists.

[Problem that the invention attempts to solve]

In the above-mentioned Utility Model Publication No. 51-42139 owned by the applicant, wire mesh is stacked, filter paper is placed on top and bottom of the wire mesh, and the filter paper is pressed, and the liquid filtered through the filter paper is sucked from the guide tube, but by suction from a vacuum pump, There is an inconvenience that liquid containing some impurities is sucked into the space around the stacked filter bodies and enters the filter, and when setting the filter paper, the outer periphery of the filter paper cannot be seen, so It is difficult to set the filter in the perfect position, so impurities can enter from this part, and it is also inconvenient and troublesome to replace the filter when it becomes clogged due to filtration. Various problems arose.

[Means for solving problems]

In view of these circumstances, the present invention has been improved in order to eliminate these problems. Namely, a two-stage recess is provided at the bottom of the liquid tank provided on the machine frame, and the central recess has the following features: A guide tube connected to a vacuum pump driven by a motor inside the machine frame is installed vertically, and multiple through holes are drilled on the outer periphery of the guide tube at the top and bottom. A switching valve was fitted from the top of the guide tube to open and close the through hole at the top, and a filter paper was stacked and pressed on top of each filter body to supply the fluid into the tank. In a liquid filtration device in which liquid is filtered through a filter paper filter by suction from a vacuum pump, the filter paper on the filter body located in the bottom recess has its outer circumference bent by a pressing portion from a pressing ring on the bottom surface. The filter body is pressed, the outer periphery of the filter body is wrapped with a frame body, and a handle is provided, and the filter body is placed on the upper receiving portion of the pressing ring via a filter paper, and the filter paper is stacked on top of the filter paper, and the upper filter paper is A perforated plate with a large number of holes so that the filter paper can be seen is stretched, and covered with a pressing frame that is supported by a support rod from a ring body that fits into the guide tube, and is pressed by tightening the ring body through the support rod. This liquid filtration device is characterized in that the lid that covers the top of the liquid tank can be attached and detached with a one-touch tightening means.The filter bodies are stacked and the outer periphery is wrapped with a frame In order to prevent impurities from entering the surrounding area, the perforated plate attached to the upper press ring is perforated to the extent that the filter paper can be seen, making it easy to see the position when setting the filter paper, and press the filter completely to set it. This is provided for the purpose of improving workability and obtaining airtightness by using the covering lid as a one-touch tightening means.

〔Example〕

Next, one embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a liquid tank, which is provided at the top of the machine frame 2.

The bottom plate 1a of the liquid tank 1 has a recess 4 shallow enough to fit the filter body 3 made of wire mesh, and the recess 4 in the center.
A two-stage recess of a deeper recess 5 is provided, and the recess 5 is
The cooking oil flowing through the recess 4 is made to accumulate and easily flow out.

An upward guide pipe 6 is installed vertically in the central recess 5, and the lower part of this guide pipe 6 is connected to a vacuum pump 7 in the machine frame 2. A plurality of through holes 8 are bored in the filter body 3 through the through holes 8, 8 by suction from a vacuum pump 7 driven by a motor.
Filtered oil is sucked through a filter paper on top of a filter body 10, which will be described later.

A switching valve 11 is slidably fitted into the upper part of the guide pipe 6, and a screw 6a is threaded around the outer periphery.

A filter body 3 made of a thin mesh wire gauze is fitted into the recess 4 of the bottom surface 1a, and a filter paper 9 whose outer periphery is positioned on the bottom surface 1a is stacked on top of the filter body 3.

In addition, the filter paper 9 presses the outer peripheral edge on the bottom surface 1a with a ring 13.
It is positioned so as to be pressed by the outwardly bent presser portion 13a provided on the lower edge of the holder.

The press ring 13 has a bent presser part 13a provided at the lower edge, a receiving part 13b bent inward at the upper edge, and a notch at the lower edge at intervals through which fluid can flow. A hole 14 is provided, and this press ring 13
The outer peripheral edge of the filter paper 9 is pressed by the pressing portion 13a.
Further, the inner periphery of the filter paper 9 on the filter body 3 is pressed by an airtight ring 16 that fits into the guide tube 6 via a packing 15.

The filter body 10 is made of a thin mesh wire mesh 10a, 1
0a, the outer periphery of the filter body 10 is wrapped with a frame 10c, and a grip ring 10d is provided on the outer periphery of the frame 10c at an opposing position and integrally molded. A filter paper 12 is placed on the portion 13b and the airtight ring 16 with the filter paper 12 interposed therebetween, and the inside of the filter chamber of the filter body 10 is communicated with the upper through hole 8 of the guide tube 6.

A filter paper 12 is placed on the filter body 10, and the outer peripheral edge of the filter paper 12 is pressed against the filter body 10 and the filter papers 12, 12 by a pressing frame 17 and a receiving portion 13b of the pressing ring 13.

The inside is pressed by an airtight ring fitted into the guide tube 6 and a nut 18 screwed into a threaded portion 6a screwed into the guide tube 6. The pressing frame 17 is supported by a support rod 21 from an annular body 20 that fits into a threaded part screwed into a stopper 19 fitted to the upper part of the guide tube 6, and furthermore, the filter paper 12 is visible in the pressing frame 17. The filter paper 12 is made by installing a perforated plate 22 with a large number of reasonably large punch holes 22a, and tightening the ring body 20 that fits into the plug body 19 with a nut 23 screwed into the threaded part of the plug body 19. It's pressing. In this case, the filter paper 12 is inserted into the punched holes 22 of the perforated plate 22 stretched over the pressing frame 17.
Since the pores a are relatively large, it is easy to see when laying the filter paper 12 on the filter body 10, and it is possible to completely lay it out to every corner and press the filter paper 12. The plug body 19 is provided with a vertical hole 24 in the center through which a vertical operating rod 24 is passed, and the switching valve 11 is operated from the outside through the operating rod 24 provided with the switching valve 11 that is slidably fitted into the guide pipe 6, and the liquid is discharged. When the amount decreases, the upper through hole 8 of the guide tube 6 is closed to prevent air from entering.

25 is a lid body that covers the liquid tank 1;
The bearing body 29 is made openable and closable by a hinge 26 on the upper part of the body, and a plurality of receiving pieces 27 are provided on the outer circumferential side, and a bearing body 29 is provided on an adjusting screw rod 28 whose one end is pivotally connected to the liquid tank 1 corresponding to the receiving pieces 27. By rotating the camshaft 30, it is brought into close contact with the tightening liquid tank 1 or released. In other words, it can be opened and closed with one touch.

[Effect]

This invention drives the motor inside the machine to filter the vacuum pump 7 when it is desired to filter the applied liquid such as oil.
When the filter is rotated to induce suction force and the liquid to be filtered is stored in the liquid tank 1, this liquid is sucked through the through holes 8, 8 of the guide tube 6 by the suction force of the vacuum pump 7. The contaminated liquid passes through the filter bodies 3 and 10 made up of layers of filter paper 12, and is sucked into the guide tube 6 by the vacuum pump 7. At this time, the filter bodies 3 and 10 are filtered through a thin mesh wire mesh and filter paper 12, and sucked in through the through hole 8, and further circulated through a conduit from the discharge side of the vacuum pump for continuous circulation and filtration.

Also, when the liquid becomes low and the upper through hole 8 of the guide tube 6 appears above the liquid level, air is sucked in from the through hole 8, the operating rod 24 is used to push down the switching valve 11 to close the upper through hole 8. Bottom plate 1a that blocks air from entering
The liquid is stored in a two-stage central recess provided in the filter, and the liquid is suction-filtered until the end.

〔effect〕

In this invention, as mentioned above, a two-stage recess is provided at the bottom of the liquid tank provided on the machine frame, and a guide tube connected vertically to the vacuum pump driven by the motor inside the machine frame is installed in the central recess. Furthermore, a plurality of upper and lower through holes are bored in the outer periphery of the guide tube, and these through holes are connected to chambers composed of filter bodies placed above and below inside the liquid tank. A switching valve that opens and closes the hole is slid into place from the top, and a layer of filter paper is stacked and pressed onto each filter body.
In a liquid filtration device in which liquid supplied into a liquid tank is filtered through a filter paper filter body by suction from a vacuum pump, the filter paper on the filter body located in the bottom recess has its outer periphery on the bottom surface and is separated from the press ring. A filter body which is pressed by a bent pressing part, whose outer periphery is wrapped by a frame body, and which is provided with a handle is placed on the upper receiving part of the pressing ring via a filter paper, and the filter paper is stacked on top of the filter body;
Furthermore, the upper filter paper is covered with a perforated plate with a large number of holes so that the filter paper can be seen, and is covered with a pressing frame supported by a support rod from a ring body that fits into the guide tube, and the ring body is tightened. Press through the support rod with pressure by
Furthermore, the liquid filtration device is characterized in that the lid covering the upper part of the liquid tank can be attached and detached with a one-touch tightening means. Because it is constructed with a handle and a handle, even if the filter paper is stacked and pressed and suctioned with a vacuum pump, impurities will not be sucked in and entered from the space where the wire mesh is stacked, and it is also easy to replace the liquid. The provision of a handle makes it easy. In addition, the punch holes in the perforated plate on which the upper filter paper press frame is stretched are made large enough to allow the filter paper to be seen, so when the filter paper is laid on the filter body, every corner can be seen and the filter paper can be completely set, improving workability and eliminating impurities. There is no intrusion, and the lid covering the liquid tank is equipped with a one-touch tightening means so that it can be easily tightened and released, resulting in good workability.

[Brief explanation of the drawing]

The drawings show one embodiment of the liquid filtration device according to the present invention, in which Fig. 1 is a partially sectional front view, Fig. 2 is a plan view, and Fig. 3 is a part of the lid tightening part. It is an enlarged view of the part. 1-liquid tank, 1a-bottom plate, 2-machine frame, 3-filter body,
4, 5 - recess, 6 - guide tube, 6a - screw, 7 - vacuum pump, 8 - through hole, 9 - filter paper, 10 - filter body, 1
0a, 10b ~ wire mesh, 10c ~ frame, 10d ~ handle ring, 11 ~ switching valve, 12 ~ filter paper, 13 ~ press ring,
13a - holding part, 13b - receiving part, 14 - notch hole,
15-packing, 16-airtight ring, 17-pressing frame, 18-nut, 19-whole, 20-ring, 2
1 - Support rod, 22 - Perforated plate, 23 - Nut, 24
- operating rod, 25 - lid body, 26 - hinge, 27 - receiver piece, 28 - adjustment screw rod, 29 - bearing body, 30 - cam ring.

Claims (1)

[Scope of utility model registration request] A two-stage recess is provided at the bottom of the liquid tank provided on the machine frame, and a guide pipe connected vertically to the vacuum pump installed inside the machine frame is installed in the center of this recess, and a A plurality of through holes are bored in the guide tube, and each through hole of the guide tube is connected to a body consisting of a wire mesh and a frame surrounding the wire mesh arranged in layers in the liquid tank. A switching valve is fitted on the upper side to open the upper through hole, and paper is stacked and pressed on top of each body, and the liquid supplied into the liquid tank is pumped into the paper and body using a vacuum pump. In the liquid filtration device, the paper on the body positioned in the bottom recess is pressed at its outer periphery by a pressing part formed in a pressing ring on the bottom surface, and is further pressed against the body on the upper side of the pressing ring. The frame body is provided with a handle, and a plurality of this body is placed on the upper receiving portion of the pressing ring with paper interposed therebetween, and paper is stacked on top of the frame body, and the topmost paper is covered with a large number of transparent sheets so that the paper can be seen. A perforated plate with holes is stretched over the guide pipe, and covered with a pressing frame supported by a support rod from a ring body fitted to the upper side of the guide pipe, and pressed through the support rod by the pressure caused by tightening the ring body, Furthermore,
The top of the liquid tank has a lid that covers the liquid tank, and this lid can be opened and closed with a hinge, and can be engaged and detached with a plurality of one-touch fastening means arranged on the outer periphery. device.