JPS60813A - Backwashing device of automatic washing filtration apparatus - Google Patents

Abstract

PURPOSE:To operate efficiently an automatic washing filtration apparatus at all times by feeding backwashing water forcibly into a central tube from a backwashing water inlet when the efficiency of the filtration apparatus is decreased. CONSTITUTION:When the filtration by an element filter medium 4 becomes insufficient, the filter medium 4 is inspected from an inspection port and backwashed. In this case, the backwashing water is fed forcibly into a central tube 5a of a backwashing nozzle from a backwashing water inlet 16, and an element revolving shaft 10 is rotated simultaneously. Then the backwashing water goes up in said central tube 5a, and flows into the primary side of the element concentrically and radially from the secondary side through a flow passage 5b. At this time, the backwashing water is spouted to the surface side of the filter medium 4 through a filtration residue storage chamber 4b and each slit of the filter medium 4, guided by a guide plate 6 for discharging the backwashing water, and discharged along with the foreign matter to the outside of the vessel from a backwashing water discharge port 9. And the part of the foreign matter protruded to the outside of the filtration residue storage chamber 4b is cut fine by a cutter 7, and introduced into the filtration residue storage chamber 4b on the downstream side to carry out filtration efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION In the present invention, when the P material of an automatic cleaning filtration device becomes clogged and the filtration efficiency decreases, the filtration efficiency is normalized by removing the clogging of the filtration material with backwash water. This invention relates to improvements to backwashing equipment.

Conventionally, there are two methods for automatic cleaning and filtration equipment.
A method in which the undiluted solution is filtered on the inner circumferential surface of the sawn material of the cylindrical element fixed to the first part, and the inner surface of the element is scraped with a scraping member as a means for removing dust attached to the inner surface. Part 2 is a type of filtration from inside a fixed cylindrical element (-next side) to the outside (secondary side) using the undiluted solution and its slough, which removes dust that adheres to the inner surface of the p-material and inside its holes. As a means for removing the filtrate, the pressure of the secondary filtrate is used to discharge it to the atmosphere through a backwash nozzle having a backwash hole in the form of a vertical slit that rotates inside the element and slides close to the inner surface of the f material. There is a method to do this.

In the former scraping method, the scraping operation may vary depending on the type of dust.
On the other hand, there is a drawback that the pores of the sawn material are closed, and the secondary pressure backwashing method also
If the P filtrate is released directly into the atmosphere, there is a disadvantage that the secondary side pressure will be close to atmospheric pressure and the backwashing effect will be lost.In addition, if the concentration of dust in the raw solution is high, Clogging occurs quickly, and the secondary side pressure suddenly drops due to clogging, causing problems such as backwashing becoming impossible.

The present invention has been proposed for the purpose of providing a backwashing device that eliminates the drawbacks and adverse effects of the above-mentioned conventional methods and allows the automatic cleaning r-filtration device to operate efficiently at all times.

Its structure consists of a vertically fixed cylindrical container, which has a bottom plate with its top opening sealed with a lid, and an inlet for raw liquid and an outlet for filtered water at appropriate locations on the surrounding wall. Element partition frames are arranged so as to be rotatable in forward and reverse directions, have a sealing plate fixed to the top, and are arranged radially in the radial direction at equal intervals along the circumference. ? An annular element frame in which a number of slag storage chambers are arranged in an annular manner for storing materials; a lower end opening is fixed to the center of the bottom plate of the container in a closed manner; A backwash nozzle that is connected to the central pipe that is tightly and mutually rotatably abutted, is located inside the element towards the center of the element inspection port, and has a slit hole that contacts the inside of the element P material. It has a funnel-shaped cross section and is attached to the element inspection port, and the tip is aligned with the center of the backwash nozzle at its center, and the distance between both sides of the backwash water discharge guide plate is the same as the element partition frame of the slag storage chamber. and a backwash water discharge plate disposed so as to be equal to and in contact with the partition frame, the upper part of which is sealed and the lower part of which is open;
A discharge plate is sized to cover the F slag storage chambers on both the left and right sides, and a discharge plate is installed on the outside of both sides of the backwash water discharge guide plate so as to cover the P slag storage chambers on both the left and right sides. A cutter with a vertical cross-section, rotatably penetrates the center part of the lid of the cylindrical container mentioned above in a fluid-tight manner, and a drive source capable of forward and reverse rotation is connected to the upper end, and the lower end is attached to the annular element frame. (El
The element rotating shaft is connected to the annular element frame via a double-metal rotating thrust radial bearing provided in the center of the sealing plate.

The present invention will be specifically explained below with reference to embodiments shown in FIGS. 1 to 4.

In Figures 1 and 2, (1, 1 is a vertically long cylindrical container with a cylindrical cross-sectional shape, and the top of the container (1) is sealed with a lid (2). A bottom plate is attached to the bottom of the container 1, and the container 1 is vertically fixed on a base (not shown) via the bottom plate 1b.

Reference numeral 11 denotes an inlet for undiluted water such as sewage installed at a suitable position on the peripheral wall of the container 1, 12 represents a filtered water outlet installed at a suitable position at the lower part of the peripheral wall of the container 1, and 4 is a cylindrical elm material F, which is usually
The slits are formed by a wedge wire having an isosceles triangular cross section as shown in FIG. (The cross section of this wedge wire may be round, semi-circular or trapezoidal.) Then, the element partition frame 4a of a constant width is arranged evenly around its outer circumference.
A slag storage chamber 4b is formed which is partitioned radially in the axial direction of the cylinder, the upper part of which is sealed with a sealing plate 4c, the lower part of which is open and communicates with the filtrate outlet 12.

In addition, an element rotation shaft 10 is located at the center of the upper part of the sealing plate 4c.
The lower end of the sealing plate is fixed, and an element rotating thrust radial bearing 15 is attached to the center of the lower part of the sealing plate.

Further, the upper part of the element rotation axis 1° extends upward through the lid 2 via the gland seal 14, and a driving source (not shown) capable of forward and reverse rotation is connected to the extending end thereof.

A large number of the F floating chambers 4b are arranged in the circumferential direction to form an annular element assembly frame E, and are driven by an element drive shaft 10, an element rotation thrust radial bearing 13, a sealing plate 40, etc. by a drive source (not shown). The backwash water nozzle can be rotated about the central pipe 5a in either the forward or reverse direction. The lower part of the element assembly frame E is open, and the open part is sealed with an element lower seal part 15. Reference numeral 5a denotes a backwash nozzle central pipe that stands vertically in the center of the container 1 with its lower end fixed to the bottom plate 1b, and one end between its upper ends is connected to the center of the lower surface of the sealing plate 4c of the element assembly frame E. , in fluid-tight and mutually rotatable abutment. 5 is the backwash nozzle center pipe 5a
connected to the inner side of the element, located toward the center of the element inspection port 17, The backwashing nozzle has a slit shape so as to touch the inside of the material 4, and the backwashing water that is press-fitted from the backwashing water inlet 16 through the slit hole of the backwashing nozzle 5 into the backwashing nozzle center pipe 5a flows upward and downward. A through a plurality of (six in this example) flow paths 5b in the direction;
It is designed to be injected from the back side of the IF material 4 to the front side (element primary side e1).

The backwash water discharge guide plate 6 serves to guide the dust backwashed as described above, together with the backwash water containing it, to the backwash water discharge port 9 which discharges it to the outside of the container 1. 17, the cross section is funnel-shaped, and the tip coincides with the center r9 of the backwash nozzle 5 at the center, and the distance between the side plates is equal to the elm' of the r floating chamber 4b (equal to the mejito partition frame 4a, and the same as the partition frame 4a). The cutters 7 are installed close to each other so as to be in contact with the tips.Cutters 7 each having a vertical cross-section facing outward are attached to the outside of the both side plates, and the blades of the cutters 7 cover the slag storage chambers 4b on both the left and right sides. Also, the upper part of the backwash water discharge guide plate 6 is sealed, and the lower part is opened and placed close to the backwash water discharge port 9. A bottom P floating part 3 is provided which is inclined in the direction of the container bottom P floating part 1 and the backwash water outlet 9, and a gap is provided between the container bottom P floating part 6 and the backwash water containing dust flows to the backwash water outlet 9. It is designed to leak out easily.

In the figure, W is the undiluted solution, Wl is the filtrate, el is the element-next side, e2 is the element secondary side, dl is the dust before and during backwashing, and d2 is the backwashed dust. show.

An embodiment of the present invention is configured as described above, and even when an undiluted solution with a significantly high dust concentration is fed, the annular element assembly frame E is rotated by the drive source and the annular element assembly frame E is rotated by the driving source.
A sudden pressure drop due to clogging of tJ4 does not occur, and backwashing operations can be carried out with sufficient margin to maintain functionality. This action is achieved by applying a rotational motion to the cylindrical element in which the r-floating chamber 4b is formed by the element partition frame 4a in which the Niremen H" material 4 has slit-shaped eyes. In other words, the undiluted solution flowing from the inlet is transferred to the element partition frame 4a. Influenced by 4a,
A vortex is generated in the P floating chamber 4b, which sucks the dust that is trying to fill the P material 4 inside, and
This occurs because it floats in the air and prevents a sudden pressure drop. Therefore, when facing the backwash water discharge guide plate B, the dust in the slag storage chamber 4b is discharged and guided to the backwash water discharge port 9.

Next, when the r-permeable water outlet 12 is opened to the atmosphere as it is, the backwashing function is always maintained even if the secondary pressure is low and there is no difference in the backwashing water outlet 9 or there is very little difference. This action is such that the backwash water from the backwash water inlet 16 is ejected from the backwash nozzle 5 to backwash the dust of the element R material 4 from the back side, and is led to the backwash water discharge guide plate B, and the backwash water It is carried out by force-feeding it to the discharge port 9 and discharging it outside the container 1,
Further, not only small dust but also dust can be backwashed and discharged to the outside of the container 1 through the backwash water outlet 9.

Note that this action is achieved by installing cutters 7 as shown in FIG. 4 on both sides of the tip of the backwash water discharge guide plate 6.
Dust, foreign matter, plants, fish and shellfish, vinyl, etc. protruding from b are easily cut off by the rotation of the element assembly frame E between the element partition frame 4a and the slag storage chamber 4b on the downstream side.
This is done by cutting the water into pieces that can be stored inside the container, guiding it into the backwash water discharge guide plate 6, and discharging it from the backwash water discharge port 9 to the outside of the container.

In addition, dust and foreign matter in the floating chamber 6 at the bottom of the container can be removed by sloping the bottom slag storage chamber 6 from the backwash water discharge port 9 and by providing an inlet to the discharge port 9. Due to the flow, dust flows forcefully from the inlet to the outlet 9.

One embodiment of the present invention is configured as described above, and the element P material 4 of the automatic cleaning filtration device becomes clogged during operation, and the filtration effect of the element P material 4 on the stock solution W becomes insufficient. Then, the element is inspected through the element inspection port 17, and the element f material 4 is backwashed.

In this case, when the backwash water is press-fitted into the backwash nozzle center pipe 5a from the backwash water inlet 16 and at the same time the element rotating shaft 10 is rotated in the forward or reverse direction by a drive source (not shown), this backwash water is The element-
It intensively flows radially into the next side el. At this time, the backwash water passes through the r floating chamber 4b,
The water is ejected from the back side of the Niremen F material 4 to the front side through each slit hole, and is guided by the backwash water guide plate 6 to the backwash water outlet 9.
is discharged from the container together with foreign matter (dust). In this case, the slope of the floating part filter at the bottom of the container 1 serves to facilitate the discharge of backwash water from the outlet 9.

The foreign matter in the waste water is filtered as described above, and the part of the foreign matter that protrudes outside the Gatsusawa slag storage chamber 4b is divided into small pieces by the cutter 7 and guided to the downstream T-float chamber 4b, thereby improving efficiency. It is possible to carry out r-overaction well.

The filtered water W from which foreign substances have been removed as described above is discharged from the filtered water outlet 12.

Although the device of the present invention has the above-described configuration and operation, according to the present invention, the element P of the filtration device
If the material 4 becomes clogged and the efficiency of the filtration device decreases, temporarily stop the operation of the Pf74 device and simply remove the backwash water inlet 1.
6 is an extremely simple operation that only presses backwash water into the center pipe 5a of the backwash nozzle, and in a short period of time foreign matter adhering to the Niremen) F material 4 can be easily fragmented and removed. The discharge guide plate B has the practical effect of reliably preventing pressure drop F by dissipating backwash water to the outside.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a cross-sectional view, FIG. 2 is a vertical cross-sectional view, and FIG. 6 is a cross-sectional view. A sectional view of the material, FIG. 4 is an enlarged view of section A in FIG. 1. 1: Cylindrical container, 2: Lid, 6: Container bottom p floating chamber,
4: Element lumber, 4a: Element partition frame,
4b: P floating chamber, 4C: Sealing plate, 5a: Backwash nozzle center pipe, 5: Backwash nozzle, 5b: Channel, 6: Backwash water discharge guide plate, 9: Backwash water outlet, 10: Element Rotating shaft, 11: Raw solution inlet, 12: Filtered water outlet,
16: Element rotating thrust radial bearing, 14 Nigerland seal, 15: Element lower seal part,
16: Backwash water inlet, 17: Element inspection port, W: Undiluted solution, Wl: Sake water, '1+'2: Dust (foreign matter), W
2: Backwash water, E: Element assembly frame. Procedural amendment (spontaneous) January p, 1980 Kazuo Wakasugi, Commissioner of the Patent Office1, Indication of the case, Patent Application No. 10'9268, filed in 19882, Name of the invention, Backwash device for automatic cleaning filtration device 3 , Relationship with the case of the person making the amendment Patent applicant address: 1-12-12 Koenji Minami, Suginami-ku, Tokyo Name: Tokyo Filtration Industry Co., Ltd. 4, sub-agent address: 105 Toranomon-chome-2, Minato-ku, Tokyo Toranomon Sangyo Building No. 29 (501) 3706 Name (6501) Patent Attorney Teru Ito 5, Specification subject to amendment 6 Contents of amendment (1) The scope of the claims will be corrected as shown in the attached sheet. (2) "Backwash water discharge plate and -111 discharge plate" in lines 5 to 7 of No. 5 of the specification is corrected to "backwash water guide discharge plate." (3) Same, page 5, line 10, ``cutter'' is corrected to ``1 cutter''. (4) Same, page 9, line 10, “backwash edge” is “backwash operation”
I am corrected. (5) Same, on page 9, second line from the bottom, after “therefore”, “
J is inserted into the p floating chamber 4h. (6) In the 5th line from the 11th Sadakata, ``If you try to rotate it,'' is corrected to ``Let it rotate. Then,''. (Ibid., page 12, line 2, “Backwash water guide plate 6” is corrected as “Backwash water discharge guide plate 6.”) (8) Same, page 12, line 6 from the bottom, “Backwash water guide plate 6” is corrected. "from the backwash water inlet 16" is corrected to "from the backwash water inlet 16". (9) "1 descent F" on the 6th line of page 16 is corrected to "descent". End of claim [Claims] Top end A vertically long cylindrical container 1 whose opening is sealed with a lid 2, has a bottom plate 1b, a undiluted solution 11 and a filtered water outlet 12 at appropriate positions on the peripheral wall, and a vertically fixed container 1 concentrically within the container 1. Element partition frames 4α are arranged to be rotatable in the forward and reverse directions, have a sealing plate 4C on the top, and are arranged radially in the radial direction at equal intervals along the circumferential direction. Between the partition frames 4a, elmmen)? The furnace slag storage chamber 4h that stores the material 4,
A plurality of annular element assembly frames E are connected in an annular manner, and the lower end opening is fixed to the bottom plate 1b of the cylindrical container 1 in a closed manner, and the upper end opening is closed and closed to the annular element assembly frame E.
It is connected to the backwash nozzle center pipe 5a which is fluid-tightly and mutually rotatably abutted to the center of the lower surface of the element 4C, and inside the element door material 4 of the annular element assembly frame E, inside the element inspection opening 17. −—■■−■■−−−−■■−inside■
■ A backwashing nozzle 5 with a slit hole so as to be in contact with the inside of the F material 4 and a funnel-shaped cross section, attached to the element inspection port 17, and the tip part is used for backwashing at the center. It is arranged so that it coincides with the center of the nozzle 5, the distance between the side plates is equal to the distance between the element partition frames 4α of the furnace slag storage chamber 4h, and it is in contact with the partition frames 4α, and the upper part is sealed and the lower part is closed. The backwash water discharge guide plate 6 is set to a size that covers the furnace slag storage chamber 4h, and the furnace slag storages on both left and right sides are installed on the outside of both side plates of the backwash water discharge guide plate 6. The force cutter 7 is attached so as to cover the chamber, and each has an approximately L-shaped cross section in the longitudinal direction. The force cutter 7 rotatably penetrates the center part of the lid 2 of the cylindrical container 1 in a fluid-tight manner, and a A drive source capable of rotation is connected, and the lower end is connected to the annular element assembly frame E via an element rotation thrust radial shaft 16 provided at the center of the sealing plate 4C of the annular element assembly frame E. Element rotation axis 1
A backwashing device for an automatic cleaning filtration device, characterized in that it is equipped with a zero support.

Claims (1)

[Claims] A vertically long cylindrical container whose top opening is sealed with a lid, has a bottom plate, an inlet for raw solution and an outlet for filtrated water at appropriate positions on the peripheral wall, and a vertically fixed cylindrical container, with normal and reverse containers concentrically placed inside the container. It is rotatably arranged, a sealing plate is fixed to the top, and the circumference is 1 OIIC? 1
"J" is an annular structure in which a large number of P slag storage chambers containing element F material are arranged in a circular manner between adjacent partition frames of element partition frames arranged radially in the radial direction at equal intervals. An element assembly frame, and a backwash nozzle central pipe VC whose lower end opening is fixed in a closed manner to the center of the bottom plate of the container, and whose upper end opening is fluid-tightly and mutually rotatably abutted to the center of the lower surface of the sealing plate.
A backwash nozzle with a slit hole located inside the element toward the center of the element inspection port and in contact with the inside of the element e material, and a backwash nozzle with a funnel-shaped cross section and attached to the element inspection port, The center of the tip coincides with the center of the backwash nozzle, the distance between the side plates is equal to the element partition frame of the slag storage chamber, and the disposed so as to be in contact with the partition frame, the upper part is closed and the lower part is open. a backwash water discharge plate, a backwash water discharge guide plate attached to the outside of the discharge plate island, and set to a size that covers the slag storage chambers on both the left and right sides;
A cutter is installed on the outside of both side plates of the backwash water discharge guide plate so as to cover the left and right adjacent P slag storage chambers, and a cutter with an outward facing vertical direction and a central part of the lid of the cylindrical container are installed. It penetrates in a fluid-tight manner so that it can rotate in a fluid-tight manner, has a drive source that can rotate in forward and reverse directions connected to the upper end, and rotates the element rotating thrust radial bearing provided at the center of the sealing plate of the annular element assembly frame E at the lower end. A backwashing device for an automatic cleaning filtration device, characterized by comprising an element rotating shaft in which annular elements are connected in a neat manner.