JPS59310A - Filter apparatus - Google Patents

Abstract

PURPOSE:To provide a filter apparatus, constituted so as to prevent pressure loss therein and to act availably even if an inflow side comes to low pressure by such a mechanism that an outflow pipe is provided to the side surface of a tank main body so as to be positioned below an inflow pipe and a pressure difference reducing plate is concentriacally provided to the inside of a perforated plate arranged in the tank. CONSTITUTION:When a fluid is flowed into a tank main body 3 from an inflow pipe 15, heavy particles are separated and precipitated in a revolving stream space part 4 between the main body 3 and a perforated plate 5 and discharged from a discharge port 2 while light particles are separated by the perforated plate 5 to be removed from the fluid. In this case, the outflow pipe 16 of the fluid is provided below the inflow pipe 15 thereof to prevent pressure loss and an apparatus is availably acted. In addition, a pressure reducing plate 18 is concentrically provided to the inside of the perforated plate 5 through a gap 17 and a communication opening 30 is formed between the lower end thereof and the lower end of the perforated plate 5 to suppress the flow of the fluid passing the small orifices 6 of the perforated plate 5. By this constitution, the fluid is slowly flowed into the gap 17 and flowed out to the outflow pipe 16 through the communication opening 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a filtration device used, for example, when drawing water from a river into an irrigation canal.

[Technical background of the invention]

A cyclone is a conventional example that is technically close to the present invention.

Generally, this cyclone has a conical horizontal body with a sediment outlet at the bottom, an outflow cylinder with upper and lower openings provided concentrically in the center of the upper partition wall of the horizontal body, and an upper part of the horizontal body. It is equipped with an inlet and an inlet connected in a tangential direction below the partition wall, and when fluid flows into the horizontal body from a tangential direction, a swirling flow is generated inside the tank body due to its momentum. Tough particles approach the inner wall of the tank body due to the action of centrifugal force, descend while swirling along the inner wall of the tank body, and are discharged intermittently or continuously from the sediment discharge port at the bottom. The relatively light particles, etc., from which the heavy particles have been removed, and the fluid rise while swirling in the center of the tank body, and flow out through the outflow cylindrical body in the center of the upper part.

[Problems with background technology]

Such a cyclone has a structure in which the ηC5 outlet is always located above the flow and inlet pipes, and although it works effectively when the pressure of the fluid supplied to the inflow pipe is high, it does not absorb the η supplied to the inflow pipe. There is a problem that a knife without ^ pressure has a large internal pressure loss and does not work effectively.

Therefore, it is necessary to place the outlet below the inlet pipe to prevent 1 cos of pressure, but with the conventional cyclone structure,
That's not possible.

[Purpose of the invention]

The present invention makes use of the centrifugal separation effect caused by the swirling flow in the cyclone, and prevents internal pressure loss by providing the outflow pipe below the inflow pipe, making it effective even when the pressure on the inflow pipe side is relatively low. The purpose of the present invention is to provide a filtration device that acts on the following.

[Summary of the invention]

1. The first structure of the present invention includes a cylindrical horizontal body having a sediment discharge port at the bottom, and a large number of small holes provided concentrically inside the horizontal body through a swirling nitrogen space. a cylindrical perforated plate having holes at its lower part; an inflow pipe connected tangentially to a relatively upper side surface of the horizontal body within a range corresponding to the outer peripheral surface of the perforated plate; The bottom of the board
A flow opening is formed between an outflow pipe drawn out from the mouth through a relatively lower side surface of the horizontal body, and a lower end of the perforated plate, which is provided concentrically with a gap interposed inside the perforated plate. 1 characterized in that it comprises a cylindrical pressure difference reducing plate.
This is related to the structure of the transverse body, and its action is that when fluid enters the horizontal body from a tangential direction, the momentum causes swirl b + t inside the horizontal body, and a relatively eastern particle ring is generated. teeth,
It is separated to the outside by the action of centrifugal force generated during rotation (b), descends while rotating on the inner wall surface of the horizontal body, and settles at the bottom of the tank body.
The fluid that passed through the small holes of this perforated plate is tALl,
It flows out through the L1 palace. - The comparatively light garbage temple moves around the outer peripheral surface of the perforated plate, descends or rises depending on its specific gravity, and moves to the lower or upper part of the horizontal body, but there is a gap inside the perforated plate. Since the pressure difference reducing plates arranged concentrically through the holes have the effect of suppressing the flow of fluid that tries to forcefully pass through the small holes of the perforated plate, the gap between the outer and inner parts of the perforated plate is reduced. The pressure difference between the two is maintained small, and therefore, dirt on the outer surface of the perforated plate is difficult to be absorbed by the small holes of the perforated plate, and dirt that is about to be absorbed by the small holes of the perforated plate is also absorbed by the swirling flow. It is peeled off from the perforated plate, the clogging of the perforated plate is naturally cleared, and the perforated plate is always kept in a fresh state.

In addition, the configuration of the present invention in item A-24 is that, in the older brother of the first examiner, floating garbage jII [1 is further provided between the upper part of the perforated plate and the horizontal body, and the floating garbage jII [1] is provided above the floating garbage passage. This invention relates to the structure of an f-filtration device characterized in that a protrusion is provided on the inner surface of the horizontal body at a liquid level located at a liquid level located at The effect is that the light debris that has risen to the liquid surface through the floating debris port is raised to the liquid surface along with the swirling flow of the liquid that flows into the tank body from the inlet pipe connected tangentially to the side surface of the horizontal body. It tries to turn, but after passing the above protrusion,
It is drawn into the vortex generated on the downstream side of the relatively concave protrusion due to the protrusion, and is separated from the swirling flow. be discharged.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

As in the l-1 embodiment shown in Figure 3.1 and Figure 2,
Paper part (1) A cylindrical perforated plate (5) is installed concentrically on the inside upper side of a cylindrical horizontal body (3) having a K-sediment discharge port (2) via a swirling flow space (4). establish. This perforated plate (
5) connects the upper end of the cylindrical part, which has a large number of small holes (6) on the circumferential surface, to the upper end closing part (center opening (8) of the tank body (3)).
It is fixed to a disc-shaped lid (9) that is fixed to the lid, and the lower end of the conical lower part (10) is opened to provide a lower opening (11), and the whole is molded from a thin steel plate. (12+ is the handle of nothing (9).

In addition, the inflow pipe a is tangentially connected to the relatively upper side surface of the horizontal body (3) within a range corresponding to the outer peripheral surface of the perforated plate (5), and the lower opening of the L flame-resistant perforated plate (5) is The outlet pipe (aυ) exits to the outside through the side surface of the relatively soft lower part of the horizontal body (3).The lower opening Uυ of the porous hole & (5) is removably fitted to the upper end of this outflow pipe (16).

Further, a cylindrical pressure difference reducing plate Q81 is provided concentrically with the porous plate (5) inside t11 with a gap 07) therebetween. This pressure difference reducing plate 0 barrel has the upper end fixed to the lid (9),
It has an open bottom end and is formed from a steel plate that is thicker than the perforated plate (5). A communication opening (2fl) is formed between the lower end 4 of this pressure difference reducing plate (18) and the conical lower part (1α) of the perforated plate (5).

Then, fluids such as water and air flow from the inflow pipe group 0 to the horizontal body (
3) When the inflow from the tangential direction inward, due to its momentum,
A swirling flow space (4) between the horizontal body (3) and the perforated plate (5)
), relatively clean particles such as stomach particles are separated to the outside by the action of centrifugal force generated during swirling, settle to the bottom (11), and are discharged from the bottom of the horizontal body (3). Exit (2)
From there, it is discharged to the outside via an on-off valve (not shown), and relatively light garbage, etc., is removed by a perforated plate (5) and passed through the small holes (6) of this perforated machine (5). The fluid flows out through the outflow pipe (1 line).In this way, particles, dirt, etc. in the fluid can be effectively separated and removed from the fluid, and unlike conventional cyclones, the outflow pipe Oe is connected to the inlet va end. 9 to prevent pressure loss, this device works effectively even when the fluid pressure on the inflow side is relatively low.

In addition, the above-mentioned relatively light garbage stays on the outer peripheral surface of the perforated plate (5) and moves downward or upward according to the 70% electric charge while rotating and moves to the lower or upper part of the horizontal body (3). This is because there is a cylindrical pressure difference reducing plate 081 which is provided concentrically inside the plate (5) through a gap α force and forms a flow opening between the lower end 01 and the lower part Ql of the perforated plate (5). , this pressure difference reducing plate (18) has the effect of suppressing the flow of fluid trying to pass through the small holes (6) of the perforated plate (5), and the gap between the outer part and the inner part of the perforated plate (5) is α7), and the fluid gently flows into the gap αη with the pressure difference reducing plate (1119) through the many small holes (6) on the circumferential surface of the perforated machine (5). The flow slowly descends through this gap (<1?) and flows through the flow opening at the bottom to the outflow pipe Q6). (6) and is likely to be absorbed by the small holes (6) of this perforated plate (5) are also stripped from the perforated machine (5) by the swirling flow, Clogging is naturally cleared and the perforator (5) is always kept fresh. In addition, the pressure difference reducing plate has the effect of preventing clogging of the porous plate (5) as described above, and also has the effect of preventing the perforated plate (5) from denting inward due to the pressure difference between the inside and outside. In other words, although the perforated plate (5) has a thinner plate thickness, the fluid resistance within the small holes (6) decreases, and the pressure difference on both sides of the small holes (6) also decreases. The thickness of the perforated plate (5) is made as thin as possible to prevent dust from clumping up on the pressure difference reducing plate (1). This can be effectively solved by increasing the pressure in the inner gap aη of the perforated plate (5).

Light debris floating on the top of the horizontal body (3) should be removed with ★ (9).
Remove it and take it out from the central opening (8).

Next, the 112th embodiment shown in FIGS. 3 and 6 and 314 will be described. Note that the same parts as in the first embodiment are given the same reference numerals, and the explanation of their structure and operation will be omitted.

The horizontal main body (3) has an open top end, and has support sC protruding from a disc-shaped inner lid (c) that fixedly supports the upper ends of the perforated plate (5) and the pressure difference reducing plate QEG on four sides. By abutting the tip of this four-force support part (goods) against the inner wall surface of the horizontal body (3), the inner lid (c) is prevented from shifting laterally, and the upper part of the perforated plate (5) and the tank body (3) are prevented from shifting laterally. ), and a floating debris port 051 is provided between them. Outflow pipe 011 Connects to the suction side of the pump.

Further, a protrusion c70 is fixed to the inner surface of the horizontal body (3) at the level of the liquid level 9 located above the floating waste port 0. This protrusion (2'0) has a predetermined spacing from the upper end opening (2) of the tank body (3) to below the liquid level (C), and in plan view, it is a round sail with respect to the tank body (33). The side wall, the swirling flow, the -5-i inclined surface section, and the horizontal section.
It is formed into an almost hexagonal shape by the downstream side surface portion 6υ that coincides with the radial direction of the main body (3), and this protrusion (
A floating and sawing outlet C (7!l) is provided in the horizontal body (3) near the downstream side of c), and a pipe is provided protruding from this floating and sawing outlet C (7!1).

Then, as shown in Figure 1r3, the river flows through the inflow pipe a.
A pipe Ct51 drawn out from a pond Oa or the like is connected with a flange, and liquid is drawn into the horizontal body (3), and particles, dirt, etc. in the liquid are separated and removed in the same manner as in the first embodiment. At that time, garbage, etc., which has a specific gravity lighter than the liquid, swirls and floats from the swirling flow space (4) to the floating garbage port (7! (3) The inflow pipe connected tangentially to the side surface of the horizontal body (3) causes the liquid flowing into the interior of the horizontal body (3) to circulate and swirl at the liquid surface (c). After passing through the protrusion, it is drawn into the vortex generated at the four downstream parts of the protrusion, which is relatively concave due to the protrusion η. Floating debris removal port C (3) provided on the side allows the debris to be discharged to the outside along with the liquid at the surface level, allowing for the removal of debris above 1.# without using power. Lower part of the inner lid (C) Remove the floating debris that has accumulated in the container by removing the inner cover (c) from the upper open end of the horizontal body (3).

Embodiment 3.1 shown in Figures 1 and 2 is a closed type, suitable for installation between pipe channels, and applicable to both liquid and air. . 1 shown in Figures 3/6 and 314 is applied to this first example.

〔Effect of the invention〕

According to the first aspect of the present invention, a cylindrical perforated machine is provided concentrically within a cylindrical horizontal body through a swirling flow space, and the horizontal body is provided within a range corresponding to the outer peripheral surface of the perforated plate. An inflow pipe is connected tangentially to the relatively upper surface of the horizontal body, and an outflow pipe is drawn out from the lower opening of the perforated plate to the outside through the relatively lower side of the horizontal body, so that fluid flows into the crossbody from the tangential direction. Due to the inflowing force, a swirling flow is generated in the swirling flow space between the horizontal body and the perforated plate, and relatively heavy particles are separated to the outside by the action of centrifugal force generated during swirling, and are deposited on the inner wall surface of the horizontal body. Afterwards, it descends while turning to 1 and settles to the bottom, and is discharged to the outside from the sediment discharge port in the 1-degree part of the city body. Relatively light garbage is passed through a perforated plate, The fluid that has passed through the small holes of this perforated plate can effectively separate and remove particles, dirt, etc. from the fluid, and unlike conventional cyclones, the outflow pipe is installed below the inflow pipe to prevent pressure loss. Therefore, this device works effectively even when the pressure on the ηC entry pipe side is relatively low. In addition, the above-mentioned relatively light dust falls on the outer peripheral surface of the perforated plate (while rotating, it descends or rises depending on its specific gravity and moves to the lower or upper part of the horizontal body, but there is no gap inside the perforated plate). Since there is a cylindrical pressure difference reducing plate which is provided concentrically through the hole and forms a flow opening between the lower end and the lower part of the perforated plate, this pressure difference reducing plate will forcefully pass through the small holes of the perforated plate. This has the effect of suppressing the flow of fluid, making it difficult to create a pressure difference between the gap between the outside and inside of the perforated plate, allowing the fluid to slowly flow into the gap and Since it descends through this gap and flows out into the outflow pipe through the flow opening at the bottom, it is difficult for dirt, etc. on the outer surface of the perforated plate to be absorbed by the small holes in the perforated plate; The swirling flow removes the dirt that is likely to be removed from the perforated plate, and the clogging of the perforated plate is naturally eliminated, keeping the perforated plate in a very fresh state. This method is effective in preventing the perforated plate from clogging, and is also effective in preventing the perforated plate from being dented due to the pressure difference between the inside and outside. The thinner the perforated plate is, the lower the fluid resistance within the pore becomes, and the pressure difference on both sides of the pore tends to decrease, making it difficult for the pores to become clogged with dirt, so the perforated plate should be as thin as possible. But,
By increasing the pressure inside the perforated plate using this pressure difference reducing plate, the stress caused by the dents in the thin perforated plate can be effectively eliminated. Enables you to increase your strength.

Further, according to the twelfth invention, in addition to obtaining the same functions and effects as the first invention, a floating waste port is further provided between the upper part of the perforated plate and the horizontal body, and the floating waste is removed. A protrusion is provided on the inner surface of the horizontal body at the liquid level located above the port, and a flotation and dust removal port is provided in the horizontal body near the downstream side of this protrusion. The floating light debris tries to swirl on the liquid surface with the swirling flow of liquid flowing into the tank body from the inlet pipe connected tangentially to the 1il1 surface of the horizontal body, but after passing the above protrusion, is drawn into the vortex generated on the downstream side of the relatively concave protrusion by this protrusion, and is naturally separated from the swirling flow. Floating garbage can be discharged to the outside naturally without using any power.

[Brief explanation of the drawing]

Figure 3/1 is a diagram showing the first embodiment of the C filter device of the present invention.
! The cross-sectional view, Figure 312, is the It-l cross-sectional view of Figure 111, 1
・Figure 6 is a vertical sectional view showing the lt2 embodiment of the present invention, J
FIG. 14 is a plan view thereof. (1)...bottom, (2)...sediment discharge port, (3)...
Horizontal body, (4)... swirling flow space, (5)... perforated plate,
(6)...Small hole, QQI...lower h15, aυ...lower opening, α4...inflow pipe, ta61...outflow pipe, (1'O...
・Gap, (field: Pressure difference reduction plate, (1 bell: bottom end, Shijima: circulation opening, (c): floating debris port, (e): liquid level, Cl1): protrusion , C4... Floating garbage outlet. June 25, 1980.

Claims (2)

[Claims] (1) A cylindrical horizontal body having a sediment discharge port at the bottom, and a cylindrical shape having a large number of small holes on the circumferential surface provided concentrically through a swirling flow space inside the horizontal body, Comparison of a perforated plate with an opening at the bottom, an inflow pipe connected tangentially to the relatively upper 11111 plane of the horizontal body within the range corresponding to the outer peripheral surface of the perforated plate, and the horizontal body from the lower opening of the perforated hole. A flow relief opening L] is formed between the outflow pipe drawn out to the outside through the side surface of the lower part of the target and the lower end of the perforated plate, which is provided concentrically with a gap between the inside of the perforated plate and the lower end of the perforated plate. A cylindrical pressure difference reducing plate. (2) a cylindrical horizontal body with a sediment outlet at the bottom;
A cylindrical perforated plate with a large number of small holes on the curved surface and open at the bottom is provided concentrically inside the tank body through a swirling flow space, and within an area corresponding to the outer peripheral surface of the perforated plate. an inflow pipe connected tangentially to the relatively upper side surface of the horizontal body, an outflow pipe led out from the lower opening of the upper perforated plate through the relatively lower side surface of the horizontal body, and the inside of the perforated plate. and a cylindrical pressure difference reducing plate provided concentrically with a gap therebetween and forming a flow opening between the lower end and the lower part of the perforated plate, floating between the upper part of the perforated plate and the tank body. A garbage port is provided, a protrusion is provided on the inner surface of the tank body at the liquid level located above the floating garbage port, and a floating garbage removal port is placed in the horizontal body near the bottom of this protrusion on the 6j6 side. This year's current situation and one passing device.