KR101634932B1 - Fluid filtering apparatus - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fluid filtration apparatus with improved structure for easily discharging solids filtered by a mesh-type filter net in the course of filtering fluid such as oil containing sludge such as sludge.
A fluid filtration apparatus according to the present invention comprises: a pump for feeding fluid; A housing having an inlet through which the fluid fed from the pump flows and an outlet through which the fluid supplied through the inlet flows out; A support shaft disposed vertically in the housing and having a hollow communicating with the outlet port side, the through hole being communicated with the hollow upper and lower; A plurality of blades coupled to the outer side surface of the support shaft so as to be spaced apart from each other with a spacer therebetween; A filter net disposed on each of the blades to filter the fluid in the housing; And discharging means for discharging the debris filtered by the upper side of the filter net to the outside through the inlet at the lower side of the housing.

Description

FLUID FILTERING APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fluid filtration apparatus, and more particularly, to a fluid filtration apparatus improved in structure so that a filtered solid-state debris can be easily discharged to the outside of a housing in a process of filtering a liquid fluid such as oil .

Generally, a liquid fluid such as an oil used in a factory often contains waste, and the filter is easily clogged in the process of filtering such residue, which disadvantageously fails to perform the function of the filter.

In order to prevent clogging of the above-mentioned filter, there is a disadvantage that it takes time to clean or replace the filter after the filter is taken out to the outside of the housing, .

Prior art related to the conventional filtration device is disclosed in Korean Registered Utility Model No. 20-0225708 entitled " High-speed Filtration Device for Edible Oil Using Centrifugal Force "(Date of Registration: Mar. 19, 2001) A filter provided on the inner wall of the rotary drum; and a space for injecting the edible oil used for the inner side of the rotary drum in close contact with the inner wall of the rotary drum. And a plurality of blades protruding radially from the bottom surface of the rotary drum; A tubular body for containing the edible oil used in the filter portion of the filter portion and for collecting the edible oil discharged to the outside of the rotary drum through the filter by the centrifugal force when the rotary drum is rotated and the cooking oil recovered from the tubular body to the frying vessel And a collection and circulation unit provided with a pump for controlling the operation of the pump.

However, when the filter is stuck to the conventional filter, the driving motor is stopped, the lid is opened, the support plate is peeled off, the filter of the bag shape is taken out of the rotary drum to remove the solids adhering to the inner surface of the filter, There is a problem in that it is troublesome to clean or replace with a new one, and the replacement period of the filter is shortened.

As another prior art related to the conventional filtration device, as disclosed in Korean Patent Registration No. 10-0577925 entitled " Desorption Type Filtration Device Using Centrifugal Force "(Registered Date: 2006.05.02), air A filtration apparatus for a purifier, comprising: a swirl-type casing having an inlet formed at a side surface thereof and an outlet formed at an upper portion thereof in an axial direction; A hollow cylindrical filter mounted inside the vortex casing to communicate with an outlet; An electric motor for rotating the hollow cylindrical filter when the pressure in the purifier becomes a predetermined value or more; And a discharge section formed at the bottom of the vortex type casing. The inlet of the vortex type casing is equipped with a wire mesh filter as a pretreatment filter, and the hollow cylindrical filter is composed of a glass fiber filter.

However, in the conventional filtration device, when solid residue is adhered to the inner surface of the filter, the filtration efficiency of the filter is lowered. In addition, it is troublesome to discharge the residue to the outside by separating the filter to the outside, There is a drawback that it takes time.

In addition, in the conventional filtration apparatus, when the inlet is arranged on the upper side or the middle side of the housing, the sludge concentrates only on the filter net corresponding to the area where the fluid flows, and filtration occurs unevenly. There are disadvantages.

Korean Utility Model Registration No. 20-0225708 entitled "High-speed Filtration Device of Edible Oil Using Centrifugal Force" (registered on March 19, 2001) Korean Patent Registration No. 10-0577925 entitled "Tidal Filtration Device Using Centrifugal Force" (Registered on May 5, 2006)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and its object is to prevent solid residue from filtering on the inner surface of the filter during filtration of a liquid fluid such as oil or the like, And to provide a fluid filtration apparatus with an improved structure that allows replacement and cleaning cycles of a filter to be extended.

According to an aspect of the present invention, A housing having an inlet through which the fluid fed from the pump flows and an outlet through which the fluid supplied through the inlet flows out; A support shaft disposed vertically in the housing and having a hollow communicating with the outlet port side, the through hole being communicated with the hollow upper and lower; A plurality of blades coupled to the outer side surface of the support shaft so as to be spaced upward and downward; A filter net disposed on each of the blades to filter the fluid in the housing; And discharging means for discharging the debris filtered by the upper side of the filter net to the outside through an inlet at a lower side of the housing.

Wherein the discharging means comprises at least one discharging means disposed inside the housing and rotatable by the rotating means on the outside of the filtering nets and connected to the rotating bar so as to be rotatably rotated upon rotation of the rotating bar, A scraper member for scraping the scraper to the outside of the filter net, a tubular inflow pipe connected to the inflow port side, a screw shaft disposed in the inflow pipe and rotationally driven by the drive motor to horizontally move the debris passed through the inflow port, And a gate valve that opens and closes an internal flow path of the discharge pipe, and a discharge pipe to which the transfer pipe is connected to allow the fluid to be transferred from the pump to one side by dropping the debris conveyed by the screw shaft downward.

The rotating means includes a connecting plate for connecting the upper end of the rotating bar, a rotating shaft connected to the upper side of the connecting plate so as to be interlocked with each other, and a rotating motor connected to the end of the rotating shaft for imparting rotational force thereto.

The discharge means is further provided with a drain valve provided on the transfer tube for draining the liquid fluid contained in the residue to the outside, and an on-off valve for opening and closing the flow path inside the transfer tube.

The scraper member includes an engagement ring coupled to the rotating bar, an elongated bar extending horizontally outside the engagement ring, a pusher disposed on the underside of the elongate bar and pushing debris deposited on the upper side of the filter net to the outside of the filter net It is composed of a plate.

The present invention can recycle a liquid fluid such as an oil, which contains sludge such as solids, which is difficult to be recycled through repeated filtration and solid-liquid separation. In the process of repeated filtration, the filtrate can not pass through the filtration net and remains in the housing It is possible to easily discharge the filter net to the outside without separating the filter net to the outside of the housing by using the discharging means such as the residue that is used for cleaning and replacing the filter, .

Further, in the present invention, since the inlet for introducing the fluid into the housing is used as a passage for discharging the debris, when the existing inlet is separately provided in the housing, the sludge concentrates only in the filter net corresponding to the area where the fluid flows, And the like.

1 is a schematic view showing a filtration system to which a fluid filtration apparatus of the present invention is applied;
2 is an enlarged view of a coupling structure of a blade of the present invention and a filter net.
3 is a plan view of a rotating bar and a scraper member of the present invention.
4A and 4B are explanatory views showing the discharge operation of the discharge means of the present invention.

The fluid filtering apparatus according to the present invention will be described with reference to FIGS. 1 to 4. The fluid filtering apparatus according to the present invention includes a pump 100 for feeding fluid supplied from the outside into the housing 200; A housing 200 having an inlet 210 through which the fluid pressurized by the pump 100 flows and an outlet 220 through which the fluid supplied through the inlet 210 flows out; A supporting shaft 500 vertically disposed in the housing 200 and having a hollow 502 formed therein to communicate with the outlet 220 and having a through hole communicating with the hollow 502; A plurality of blades 700 coupled to the outer surface of the support shaft 500 in an upward and downward direction via spacers 550; A filter (750) disposed on each of the blades (700) for filtering the fluid in the housing (200); And discharging means 300 for discharging the debris filtered by the upper side of the filter net 750 to the outside through an inlet 210 below the housing 200.

Referring to FIG. 1, the housing 200 has a cylindrical tubular structure having an outlet 220 formed at the lower center and an inlet 210 formed at a lower side.

In addition, the housing 200 is provided with a cover for opening the upper portion, and an air vent for discharging the air in the housing 200 is provided on the cover.

The support shaft 500 is vertically disposed at the center of the interior of the housing 200 and has a structure in which the lower end of the hollow 502 communicates with the outlet 220.

Referring to FIG. 2, the filter net 750 has a coupling structure that is seated and fixed above each blade 700, and is configured in a mesh shape to filter fluid such as oil.

The pump 100 is piped to the inlet 210 and provides pressure to force fluid into the housing 200.

The discharging means 300 includes a rotating bar 310 disposed at least one inside the housing 200 and rotatable by the rotating means 400 on the outside of the filtering nets 750, A scraper member 320 coupled to the rotating bar 310 to rotate the rotating bar 310 to rotate the rotating bar 310 to scrape off debris filtered on the upper side of the filter net 750 to the outside of the filter net 750, A screw shaft 340 disposed in the inlet pipe 330 and rotationally driven by a driving motor 380 to horizontally move the debris passed through the inlet 210 to the outside, A discharge pipe 350 for dropping the debris conveyed by the screw shaft 340 downward and connected to the conveyance pipe 360 so that fluid can be conveyed from the pump to one side of the discharge pipe 350, And a gate valve 370 for opening and closing the valve.

A plurality of the rotation bars 310 are vertically arranged in a space between the inner circumferential surface of the housing 200 and the filter net 750 and are disposed at mutually spaced positions.

2 and 3, the scraper member 320 includes a coupling ring 322 coupled to be fixed to the rotary bar 310, and an extension bar 322 extending horizontally outside the coupling ring 322. [ And a plate 325 attached to the lower side of the extension bar 324 and pushing debris deposited on the upper side of the filter net 750 to the outside of the filter net 750.

The plate 325 is formed in an arc shape and is attached to the lower side of the extension bar 324. The plate 325 is rotated in conjunction with the rotation bar 310 so that the debris (sludge) To perform the push function.

The rotating means 400 includes a connecting plate 410 for connecting the upper end of the rotating bar 310 and a rotating shaft 420 connected to the connecting plate 410 to be interlocked with the connecting plate 410, And a rotary motor 430 which is connected to the end of the rotary shaft 420 to provide a rotary force.

The rotary shaft 420 has a structure in which a lower portion thereof is engaged with the connection plate 410 by concavo-convex coupling, and the upper portion thereof is linked with the motor shaft of the rotary motor 430.

The discharge means 300 includes a drain valve 390 provided in the transfer pipe 360 for draining the liquid fluid contained in the residue to the outside, A valve 395 is further provided.

The drain valve 390 is connected to the lower side of the transfer pipe 360 and performs a function of discharging the liquid state fluid contained in the residue to the outside when discharging the debris using the discharging means 300.

In this case, the opening / closing valve 395 interrupts the flow path in the transfer pipe 360 connected to the pump to prevent the liquid fluid from flowing back to the pump side in the process of draining the liquid fluid contained in the residue through the drain valve 390 to the outside On the other hand, when the fluid is normally fed through the pump to the inside of the housing 200, the fluid will be opened.

The opening / closing valve 395 may be manually operated by an operator manually, or may be opened and closed by a control signal of a control unit (not shown).

Reference numeral 600 denotes a stirring tank 600 which is connected to the outlet port 220 to supply the filtered fluid to the pump side and then temporarily charged and stirred in the circulation process of the fluid.

The stirring tank 600 has a structure in which the lower part is connected to the pump 100 and the upper part is connected to the outlet 220 through piping and the stirring shaft is rotatably driven by a stirring motor.

That is, the mixing tank 600 mixes the fluid evenly, then flows the mixed fluid to the pump 100 side, and supplies the filtered fluid to the pump 100 side through the outlet port 220.

As a result, the fluid is filtered in the housing 200, collected in the stirring tank 600, and then subjected to a filtering operation that is repeatedly circulated to the housing 200 side via the pump 100 again.

In the present invention having such a configuration, the filtration process of the fluid in the normal state is performed by the pressure of the pump through the open / close valve 395 opened by the fluid, and flows into the housing 200 through the transfer pipe 360 and the inlet port 210 The filtered fluid flows into the hollow 502 in the support shaft 500 through the filter net 750 spaced upward and downward in the housing 200 through the support shaft 500, And is discharged to the outside of the housing 200 through the opening 220.

At this time, the filtered fluid passing through the filter net 750 flows into the hollow 502 through the through hole of the support shaft 500 and flows out toward the outlet 220 in the hollow 502.

The through holes located between the filter net 750 and the blade 700 of the through holes cause only the fluid passing through the filter net 750 to flow into the hollow 502 of the support shaft 500, It is possible to prevent the fluid from passing through the sludge or the like due to the sludge or the like so that the flow of the fluid is lost. Even if the position of the through hole is not positioned between the filter net 750 and the blade 700, So that it can flow out to the outside of the housing 200.

Thereafter, the sludge contained in the fluid does not pass through the filter net 750 and is seated on the filter net 750.

After the filtration process is completed, if the flow path of the pipe connecting the transfer pipe 360 and the pump is closed after the opening / closing valve 395 is closed, and then the rotating motor 430 of the rotating means 400 is driven, The rotation shaft 310 connected to the connection plate 410 is rotated from the outer side of the filter net 750 to the inner circumferential surface of the housing 200, Rotate along the perimeter.

As the rotating bar 310 rotates, the scraper member 320 rotates in conjunction with the rotation of the scraper member 320. As the lower surface of the plate 325 rotates while scraping the upper surface of the filter net 750, , As shown in FIG. 4A, the debris such as sludge, which is filtered on the upper side of the filter net 750, is pushed outside the edge of the filter net 750.

 The residue on the upper side of the filter net 750 is pushed by the plate 325 and is released from the filter net 750 and falls to the bottom of the housing 200. After falling to the bottom of the housing 200, The gas is pushed toward the inlet 210 opened by the scraper member 320 located at the bottom of the inlet pipe 210 and is introduced into the lower inlet pipe 330 through the inlet 210.

Thereafter, as the screw shaft 340 is rotationally driven by the rotational driving force of the driving motor 380, the debris charged into the inflow pipe 330 is transferred from the left side to the right side in the drawing as shown in FIG. 4B, The drain valve 350 is opened and the gate valve 370 is opened to open the lower portion of the discharge pipe 350 so that the debris is discharged to the outside of the discharge pipe 350.

At this time, the gate of the gate valve 370 is operated backward to the outside of the discharge pipe 350 for opening the flow path of the discharge pipe 350.

A processing facility for collecting and treating waste discharged from one end of the discharge pipe 350 from the outside may be provided.

The discharging means 300 for discharging the residue is performed after the filtering operation of the fluid is completed,

Accordingly, the fluid having undergone the repeated filtration process can be recycled after the valve installed in the pipe connecting the agitation tank 600 and the pump 100 is opened to flow out to the outside.

Therefore, the present invention can recycle the fluid such as oil, which is contained in the sludge solids and is difficult to be recycled through repeated filtration and solid-liquid separation, and can not be passed through the filter net 750 in the process of repeated filtration, It is possible to easily discharge the filtration net 750 to the outside without withdrawing the filtration net 750 to the outside by using the discharging means 300, And has a useful effect of shortening the time.

In addition, the present invention utilizes the inlet 210 into which the fluid flows into the housing 200 as a passage for discharging debris, so that when the existing inlet 210 is separately provided in the housing 200, It is possible to prevent sludge from concentrating only on the filter net 750 and causing uneven filtration.

100: pump 200: housing
210: inlet 220: outlet
250: Air vent 300: Discharging means
310: rotating bar 320: scraper member
322: coupling ring 324: extension bar
325: Plate 330: Inflow pipe
340: screw shaft 350: discharge pipe
360: Transfer pipe 370: Gate valve
380: drive motor 390: drain valve
395: opening / closing valve 400: rotating means
410: connecting plate 420:
430: rotation motor 500: support shaft
502: hollow 505: through hole
550: Spacer 600: Stirring tank
700: blade 750: filter net

Claims (5)

A pump 100 for feeding fluid;
A housing 200 having an inlet 210 through which the fluid pressurized by the pump 100 flows and an outlet 220 through which the fluid supplied through the inlet 210 flows out;
A supporting shaft 500 vertically disposed in the housing 200 and having a hollow 502 formed therein to communicate with the outlet 220 and having a through hole communicating with the hollow 502;
A plurality of blades 700 coupled to the outer surface of the support shaft 500 so as to be spaced upward and downward;
A filter (750) disposed on each of the blades (700) for filtering the fluid in the housing (200);
And discharging means 300 for discharging the debris filtered by the upper side of the filter net 750 to the outside through an inlet 210 below the housing 200,
The discharging means 300 includes a rotating bar 310 disposed at least one inside the housing 200 and rotatable by the rotating means 400 on the outside of the filtering nets 750, A scraper member 320 coupled to the rotating bar 310 to rotate the rotating bar 310 to rotate the rotating bar 310 to scrape off the debris filtered on the upper side of the filter net 750 to the outside of the filter net 750, And a screw shaft 340 disposed in the inlet pipe 330 and rotationally driven by the driving motor 380 to horizontally move the debris passed through the inlet 210 to the outside, A discharge pipe 350 to which the transfer pipe 360 is connected so as to allow the fluid to be transferred from the pump to one side by dropping the debris conveyed by the screw shaft 340, A gate valve 370 is provided Fluid filter apparatus according to. The method according to claim 1,
Wherein the housing (200) is provided with a cover at an upper portion thereof, and an air vent is further provided at an upper side of the cover to discharge air in the housing (200). The method according to claim 1,
The rotating means 400 includes a connecting plate 410 connecting the upper end of the rotating bar 310,
A rotation shaft 420 connected to the upper side of the connection plate 410 so as to be interlocked,
And a rotating motor (430) connected to an end of the rotating shaft (420) to apply a rotational force to the fluid. The method according to claim 1,
The discharge means 300 includes a drain valve 390 provided on the transfer pipe 360 for draining a liquid fluid contained in the residue to the outside,
Further comprising an opening / closing valve (395) for opening / closing a flow path inside the transfer pipe (360). The method according to claim 1,
The scraper member 320 includes a coupling ring 322 coupled to the rotation bar 310,
An extension bar 324 extending horizontally on the outside of the coupling ring 322,
And a plate (325) attached to the lower side of the extension bar (324) and pushing the debris deposited on the upper side of the filter net (750) to the outside of the filter net (750).

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