JPH0783807B2 - Integrated separation and removal device for solid and gaseous foreign matter in liquid - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small integrated device that smoothly and efficiently separates and removes solids and gaseous foreign substances in a liquid.

(Prior Art) Conventionally, in a machine tool, a construction machine, a transportation machine, etc. equipped with a prime mover, hydraulic equipment, etc. in which lubricating oil and other liquids are circulated, a filter is used to remove solid foreign matters in the liquid. Mold filters and centrifugal filters are used.

On the other hand, as a method for removing gaseous foreign matters floating or dissolved in a liquid, methods such as a degassing method utilizing buoyancy of gas, a decompression degassing method, and a degassing method utilizing centrifugal force (for example, Japanese Patent Publication No.
No. 23803, Japanese Patent Publication No. 61-36444) have been used.

Thus, conventionally, removal of solid foreign matter and removal of gaseous foreign matter have been performed by separate devices.

Therefore, when it is difficult to take up space, it has been desired to develop a device that efficiently satisfies both functions and can be used in a small space.

Taking the prime mover as an example, in recent motors for passenger cars and motorcycles, the rotational speed and output tend to increase remarkably, and at the same time excessive mixing of air bubbles into the oil causes excessive wear in the engine and valve system. Problems such as malfunction of hydraulic lifters used have been reported, and oxidative deterioration of lubricating oil becomes significant.

In addition, a machine loaded with a prime mover, such as a passenger car or a motorcycle, generally has a very limited space for accommodating the prime mover, and a device for removing solid foreign matters in oil and a device for removing air bubbles, that is, gas foreign matters. To provide separately,
It is difficult in terms of space and weight reduction.

This situation also applies to machine tools, construction machines, transport machines, etc., in which various hydraulic operating devices and hydraulic control devices are incorporated.

Further, in various film coating liquids, when air bubbles are mixed, the film coating surface becomes non-uniform and the quality is deteriorated.

Therefore, the present applicant has filed Japanese Patent Application No. 63-118180 (Japanese Patent Laid-Open No.
No. 104315) proposes an integrated separation / removal device capable of separating solid foreign matter and gaseous foreign matter in lubricating oil.

This device uses a swirl flow chamber that creates a swirl flow in the lubricating oil that contains solid foreign matter and gas foreign matter that are pumped, and swirls the lubricating oil that contains a large amount of solid foreign matter that collects at the outer edge of the swirl flow due to the difference in specific gravity. Guide to the filtration chamber that is integrated with the flow chamber,
After separating from the swirling flow / filtering chamber through a small hole provided in the wall of the filtering chamber, solid foreign matter is removed from this lubricating oil by a filtering device, while lubricating oil containing a large amount of gaseous foreign matter gathering at the center of the swirling flow is introduced into the conduit tube. Alternatively, the solid foreign matter and the gaseous foreign matter in the lubricating oil can be continuously separated and removed by guiding them to the outside of the apparatus through the through hole.

(Problems to be Solved by the Invention) However, the device proposed in the above patent application is such that the lubricating oil containing a large amount of solid foreign matter that is polymerized on the outer edge of the swirling flow is separated from the swirling flow / filtration chamber and then solidified by the filtering device. Since the foreign matter is removed to obtain clean lubricating oil, the small holes in the wall of the filtration chamber may be clogged with solid foreign matter before being introduced into the filtration device, and the device may not operate smoothly.

In addition, there is a problem that a method of installing a swirl flow conduit or a hole for introducing lubricating oil containing solid foreign matter and gaseous foreign matter into the swirl chamber becomes complicated.

Therefore, the present invention is an integrated device that can remove solid foreign matter and gaseous foreign matter in a liquid efficiently and smoothly at the same time, and has a storage space which is almost the same as that of a conventional filtration device and has a relatively simple structure. The purpose is to provide.

(Means for Solving the Problems) An integrated separation / removal device for solids and gaseous foreign matters in a liquid according to the present invention has a basic configuration including a substantially cylindrical container and a bottom peripheral portion of the container. A liquid inlet for introducing a liquid containing foreign matter and gaseous foreign matter into the container, a filtering device provided inside the container for removing solid foreign matter, and an internal space of the filtering device for separating gaseous foreign matter A swirl flow chamber, a swirl flow conduit for tangentially introducing a liquid containing gaseous foreign matter into the swirl flow chamber, and a substantially central shaft portion of the swirl flow chamber,
A gas foreign matter removing pipe, one end of which penetrates through the swirl chamber and the container, removes a liquid containing a large amount of gas foreign matter gathered in the center of the swirl chamber, and a central portion of the bottom of the container. And a liquid outlet for discharging the liquid collected outside the swirl flow chamber to the outside of the container.

The solid foreign matter is removed from the liquid containing the solid foreign matter and the gaseous foreign matter, and then the gaseous foreign matter is removed.

The filtering device is composed of a filtering element, a filtering element reinforcing cylinder, and a circular plate with a hollow hole that solidifies the upper and lower ends of the filtering element.

The swirl flow conduit introduces the liquid containing the gaseous foreign matter into the swirl chamber after the solid foreign matter is removed by the filtering device.

The swirl flow conduit is provided at one end of the swirl chamber in a direction tangential to the swirl chamber.

A plurality of small holes for removing foreign matters are formed in the swirl chamber of the foreign matter removing tube.

In addition, a plurality of small holes for liquid outflow are formed in the wall of the swirl flow chamber so that solid foreign matter and gaseous foreign matter are separated.

The small hole provided on the wall of the swirling flow chamber communicates with the liquid outlet provided at the center of the bottom of the container.

As a safety measure in the case where the filtering element is clogged, a pressure control valve can be provided on the outer peripheral portion of the circular plate having a hole formed therein which is attached to the upper portion of the filtering element.

Further, the gas foreign matter removing pipe may be provided with a pressure control valve for adjusting the pressure of the liquid containing a large amount of the gas foreign matter.

Further, in order to cool the liquid introduced into the apparatus of the present invention or the liquid in the swirl flow chamber, a cooling device can be installed on the outermost wall of the container or on the wall surface of the swirl flow chamber.

(Operation) In the integrated separation / removal device for solid and gaseous foreign matter in the liquid configured as described above, the liquid containing the solid foreign matter and the gaseous foreign matter pumped by the pump flows into the container from the liquid inlet. Then, the solid foreign matter is removed by flowing from the outside to the inside of the filtering element in the filtering device and being filtered.

The liquid from which the solid foreign matter has been removed flows tangentially into the swirling flow chamber from the swirling flow conduit tube and becomes a vigorous swirling flow.

Then, due to the difference in specific gravity, the liquid is separated into a liquid containing a large amount of gaseous foreign matter and a liquid containing no gaseous foreign matter, and the liquid containing a large amount of gaseous foreign matter gathers in the center of the swirling flow, while the liquid containing no gaseous foreign matter is swirled. Collect at the outflow edge.

The liquid containing a large amount of gas foreign matter enters the gas foreign matter removing pipe through a small hole provided in the gas foreign matter removing pipe and is removed to the outside of the apparatus.

The liquid that does not contain the foreign matter and is collected outside the swirl flow chamber is led out from the liquid outlet through the small holes provided in the wall of the swirl chamber, and is smoothly supplied to the necessary place.

Unlike the above-mentioned Japanese Patent Application No. 63-118180, the device of the present invention has a structure in which the liquid from which solid foreign matter has been removed by a filtering device is introduced into the swirling flow chamber.

Therefore, as in the above-mentioned application, there is no risk that the small holes provided in the wall of the swirl flow chamber will be clogged by the solid foreign matter in the liquid, and a purified liquid in which solid foreign matter and gas foreign matter are removed is required. It can be smoothly supplied to the location.

(Examples) Examples of prototypes for four-cycle gasoline passenger cars and motorcycles will be described below with reference to FIG.

However, the present invention is not limited to this.

In this device, the shape of the bottom plate (2
A filter element (2), a filter element reinforcing cylinder (3), on the inner circumferential portion of the container (11) fixed to 1),
A filtering device is provided which consists of upper and lower perforated discs (16, 16) for fixing the upper and lower ends of the filtering element (2).

A large number of small holes are formed in the filter element reinforcing cylinder (3).

A contact portion between the outer peripheral portion of the upper middle-perforated disc (16) and the outer wall of the container (11) is sealed by an O-ring (18).

A liquid inlet (20) for introducing the liquid into the container (11) from the outside is opened at the peripheral portion of the bottom plate (21).

In order to prevent the liquid introduced into the container (11) from flowing backward and flowing out of the container (11) between the bottom plate (21) and the lower middle perforated disc (16), A stop valve (1) is provided.

Further, a liquid outlet (15) for discharging the liquid from the container (11) is opened at the center of the bottom plate (21).

The upper space in the container (11) partitioned by the upper middle perforated disc (16) and the outer wall of the container (11) serves as a swirl flow preparation chamber (5).

Then, in the inner space of the filtering element reinforcing cylinder (3), a bottom plate (21), a check valve (1) and a lower middle perforated disc (16) are fixed at their lower ends to an isolation cylinder (4). ) Is installed.

An inverted conical cylindrical swirl chamber (6) is provided above and inside the isolation cylinder (4), and the swirl chamber (6) is fixed to the upper end (12) of the isolation cylinder (4). Has been done.

A swirling flow conduit (7) is tangentially attached to the bottom of the swirling flow chamber (6).

A gas foreign matter removing pipe (9) is provided on the bottom surface (10) of the swirling flow chamber (6) and the container (1
It is installed through the outer wall of the top of 1).

Between the bottom surface (10) of the swirl chamber (6) and the outer wall of the top of the container (11), the swirl chamber (6) and the foreign matter removing pipe (9)
A fixing spring (19) for fixing is attached.

A large number of gas foreign matter removing small holes (8) are formed in the portion of the gas foreign matter removing pipe (9) located inside the swirl flow chamber (6).

A large number of small holes (14) for liquid outflow are formed in the wall surface (13) of the swirl chamber (6) below the part fixed to the upper end (12) of the isolation cylinder (4). Has been done.

The liquid outflow small hole (14) communicates with the internal space of the isolation cylinder (4) and the liquid outlet (15).

Further, as a safety measure when the filtering element (2) is clogged, a pressure control valve (17) is installed on the outer peripheral portion of the upper middle perforated disc (16).

In the apparatus of the present invention configured as described above, the liquid containing the solid foreign matter and the gaseous foreign matter that has been pumped by the pump passes from the liquid inflow port (20) through the check valve (1) into the container (11). Flow into.

This liquid flows from the outside to the inside of the filtering element (2), is filtered, and solid foreign matter is removed by the filtering element (2).

The liquid from which solid foreign matter has been removed passes through a small hole provided in the filtration element reinforcing cylinder (3) between the filtration element reinforcing cylinder (3) and the isolation cylinder (4), and the swirling flow preparation chamber ( 5), and is introduced tangentially into the swirl flow chamber (6) from the swirl flow conduit (7).

The liquid containing the gaseous foreign matter introduced into the swirling flow chamber (6) is
It becomes a violent swirling flow.

Then, due to the difference in specific gravity, it is separated into a liquid containing a large amount of gaseous foreign matter and a liquid containing no gaseous foreign matter, and the liquid containing a large amount of gaseous foreign matter gathers in the central part of the swirling flow, and is discharged from the small foreign matter removing hole (8). Enter the foreign matter removal pipe (9) and enter the container (11).
Removed outside.

On the other hand, the liquid containing no gas foreign matter gathers at the outer edge of the swirling flow and passes through the liquid outflow small hole (14) formed in the wall surface (13) of the swirling flow chamber (6) to the inside of the isolation cylinder (4). And is made into a purified liquid from the liquid outlet (15) and sent to a required place.

(Effects of the Invention) The present invention is a compact integrated device that can efficiently and continuously remove solid foreign matter and gaseous foreign matter in a liquid and that has a storage space that is almost the same as that of a conventional filtration device.

Further, unlike Japanese Patent Application No. 63-118180, after the solid foreign matter is removed by the filtering device, the gas foreign matter is separated and removed by the swirling flow chamber and the gas foreign matter removing pipe.

Therefore, as in the above-mentioned application, there is no possibility that the solid foreign matter in the liquid will cause clogging of the small holes provided in the wall of the swirling flow chamber, and the solid foreign matter and the gas foreign matter are removed, and the cleaned liquid is required. It can be smoothly supplied to the location.

In addition, the swirl flow conduit is not provided on the outer wall of the container, and both the liquid inlet for introducing the liquid into the container and the liquid outlet for discharging the purified liquid from the container are opened at the bottom of the container. Therefore, the structure can be relatively simple.

As a result, the use of the device of the present invention has the following effects.

The first effect is that extremely advantageous lubrication conditions can be formed in passenger cars, motorcycles, various machines, and the like, which have been driven in an increasingly high rotation range in recent years.

That is, by mounting the device of the present invention, abnormal wear caused by solid foreign matter in the lubricating oil can be prevented.

In addition, since the foreign matter, that is, the bubbles, mixed in the lubricating oil can be efficiently removed, the hydraulic valve lifter often mounted on the engine can be operated smoothly.

In addition, it is possible to prevent oil starvation (insufficient lubrication) on the high-speed sliding bearing surface due to the contained bubbles,
Excessive wear due to this oil starvation can be prevented.

The second effect is that we can expect promising developments in future engine and mechanical design.

For example, currently, the maximum engine speed of passenger cars is around 7,000 rpm, and that of motorcycles is around 20,000 rpm, but in these rpm ranges, excessive mixing of bubbles in engine oil is observed,
Therefore, an oil starvation phenomenon occurs on various lubricating surfaces in the engine, and excessive wear is often observed.

By installing the device of the present invention and removing bubbles in the lubricating oil,
It is expected that higher engine speeds will be possible due to engine and mechanical design.

Further, since the device of the present invention has a compact structure, it does not hinder the design of passenger cars, motorcycles, various machines, etc., where the installation space is extremely limited.

The third effect is that by removing the bubbles, it is possible to prevent oxidative deterioration of the lubricating oil and the chemical raw material that is easily oxidized, and to prolong the service life.

The fourth effect is that it is possible to prevent non-uniformity of products and deterioration of quality due to bubbles in the liquid.

For example, various film coating liquids are extremely controlled so that air bubbles do not enter the liquid because the film coating surface becomes non-uniform when air bubbles enter.

By using the device of the present invention, an excellent bubble removing effect can be exhibited even under such conditions.

[Brief description of drawings]

FIG. 1 is a sectional view of an apparatus according to an embodiment of the present invention. 1 ... Check valve 2 ... Filtration element 3 ... Filtration element reinforcing cylinder 4 ... Isolation cylinder 5 ... Swirl flow preparation chamber 6 ... Swirl flow chamber 7 ... Swirl flow passage tube 8 ... Gas Small hole for foreign matter removal 9 …… Gas foreign matter removal tube 10 …… Swirling flow chamber bottom 11 …… Container 12 …… Upper end of isolation cylinder (fixed portion of swirling flow chamber and isolation cylinder) 13 …… Swirl flow chamber wall 14 …… Small hole for liquid outflow 15 …… Liquid outlet 16 …… Circular disk (upper and lower) 17 …… Pressure control valve 18 …… O-ring 19 …… Fixing spring 20 …… Liquid inlet 21 ... Bottom plate

Claims (1)

[Claims] 1. A device for continuously removing solid foreign matter and gaseous foreign matter in a liquid, the basic structure of which is provided in a substantially cylindrical container and a peripheral portion of a bottom portion of the container. A liquid inlet for introducing a liquid containing foreign matter into the container, a filtering device provided inside the container for removing solid foreign matter, and a plurality of small holes provided in the inner space of the filtering device. A swirl flow chamber for separating gas foreign matter, a swirl flow conduit for introducing a liquid containing gas foreign matter into the swirl flow chamber in a tangential direction, and a substantially central axis portion of the swirl flow chamber with one end thereof A gas foreign matter removing pipe having a plurality of small holes, which penetrates through the swirl flow chamber and the container and removes a liquid containing a large amount of the gas foreign matter gathered in the center of the swirl flow chamber; A liquid that is provided at the center of the bottom and gathers outside the inside of the swirling flow chamber is An integrated type of solid and gaseous foreign matter in a liquid, characterized by comprising a liquid outlet leading out of the device, and removing the solid foreign matter from the liquid containing the solid foreign matter and the gas foreign matter, and then removing the gas foreign matter. Separation and removal device.