KR200218449Y1 - Filter equipped with precipitation function - Google Patents

Abstract

The present invention relates to a filtration device having a sedimentation function, and in particular, by installing a settling portion (2) in the upper part of the filtration tank (1) by removing a certain amount of suspended solids (SS), which causes clogging of the filtration of the filtration tank (1) This method aims to reduce the frequency of backwashing and to facilitate the maintenance.

In addition, in the process of performing filtration through the filtration tank as well as more precise filtration can be carried out as well as to prevent the agglomeration of the sludge collected in the lower portion, and to prevent the sludge is loaded in the sludge separation unit is usually the configuration In the filter of the low-speed rotary motor (3) and the exhaust hole (4) is installed on the upper side, a precipitation unit (2) capable of performing the precipitation function is installed below, and the treated water inlet pipe (5) on the upper side And, the lower part of the filtration tank 1 is formed with a filtered water discharge pipe (6); The first and second separation plates 7 and 8 having a plurality of through holes are installed in the lower side of the filtration tank 1, but the first filtration layer 9 is disposed above the first separation plate 7. A filtration unit installed between the first and second separation plates 7 and 8 so that a second filtration layer 10 is formed, and a lower collecting part 11 is formed below the second separation plate 10; It relates to a filtration device having a precipitation function, characterized in that it is provided with a hollow shaft 14, which is connected to the low-speed rotary motor (3) to the upper portion of the filtration unit and a plurality of grinding blades 12 are formed at the bottom. .

Description

Filter equipped with precipitation function {Filter equipped with precipitation function}

The present invention relates to a filtration device having a sedimentation function, and more particularly, to a filtration device having a sedimentation function for facilitating the maintenance of the filter by reducing the frequency of backwashing by installing the sedimentation unit at the top of the filter to perform the precipitation function before filtration. It's about.

In recent years, a large amount of industrial wastewater and domestic sewage are discharged into rivers and lakes that become water supplies through rivers, causing serious environmental pollution. Thus, the government can minimize such environmental pollution. The policy of mandatory installation of wastewater treatment facilities and the treatment water passed through the wastewater treatment facilities were to be discharged in a filtered state without departing from the standard contamination value.

Therefore, a general wastewater facility had to be installed at a site that discharges a large amount of wastewater, while a high-treatment facility had to be equipped at a treatment facility to comply with the standard pollution value.

Although there are various facilities in the above advanced processing equipment, among them, a sand filter which is relatively simple and excellent in filtration efficiency is generally used, and the applicant also registers a 'rapid sand filter device' described in Utility Model Registration No. 151939. This will be described with reference to the accompanying drawings.

Figure 4 is a longitudinal cross-sectional view showing a conventional sand filter, the exhaust hole 142 is formed on the upper surface, the raw water inlet pipe 220 is installed through the upper side, the lower portion is installed so that the water discharge pipe 240 is connected to A filtration tank 140; A sand layer 160 provided with a water purification nozzle plate 150 having a plurality of through holes 150a formed at an inner lower portion of the filtration tank 140, and being stacked on a lower side of the water collecting portion 162 and an upper surface thereof; A post 170 installed at an inner center of the filtration tank 140; A sludge separation unit 180 having a radish 184 formed therein as an outer circumferential surface of the post 170; A sludge discharge pipe 230 connected to an outer circumferential surface of the main body 182 and installed to penetrate the outside of the filtration tank 140; A floating guide 190 spirally installed on the outer circumferential surface of the post 170 so as to connect the upper portion of the sand layer 160 with the inner space of the radish 184; It consists of an air supply unit 200 is installed at the lower end of the floating guide 190.

The action of the conventional sand filtration device configured as described above rotates the treated water in the filtration tank 140 about the post 170 installed in the inner center by the inlet pressure of the treated water introduced through the raw water inlet pipe 220, Due to the centrifugal force, sludge contained in the treated water and having a predetermined weight is collected under the post 170.

The collected sludge is guided to the sludge separation unit 180 along the flotation guide 190 through the air supply unit 200, and the sands floating together with the air bubbles and the sludge in the guide process are caused by the difference in specific gravity. And it is separated from the sludge and falls, the sludge introduced into the sludge separation unit 180 is discharged to the outside of the filtration tank 140 through the sludge discharge pipe 230 over the inner radish 184.

Meanwhile, the filtered purified water is discharged to the purified water discharge pipe 240 through the purified water collecting part 162 through the through hole 150a of the purified water nozzle plate 150 after passing through the sand layer 160.

However, in the conventional sand filtration device as described above, since the filtration layer simply passes through the sand layer 160, there is a problem in that it is impossible to perform more precise filtration. The problem is that the contacting parts are mixed indiscriminately and have adverse effects.

In addition, since the sludge collected below has a viscosity, the sludge is mutually aggregated due to the viscosity, the flotation force is lowered, so that the sludge separation does not occur smoothly.

In addition, as the sludge floating upward through the floating guide 190 having the lower portion opened and the interference with the treated water rotated due to the centrifugal force, the sludge does not smoothly rise.

In addition, the sludge guided to the sludge separation unit 180 also has its own mass, so that the sludge separation unit 180 does not smoothly cross the radish 184 formed into the main body 182 so that it is frequently loaded. The result was a problem.

Accordingly, the present invention has been made to solve the conventional problems as described above, the purpose of the pre-treatment step of the treated water introduced by improving the 'speed sand filtration device' described in the applicant's prior application utility model registration No. 151939 By installing a sedimentation furnace to remove a certain amount of suspended solids, it is possible to perform fine filtration in the process of performing filtration in the lower filtration layer, as well as to prevent agglomeration of sludge collected in the lower part, and the sludge is loaded in the sludge separation unit. To prevent them.

1 is a partial cutaway perspective view showing the configuration of the present invention.

2 is a longitudinal sectional view according to FIG. 1;

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is a longitudinal sectional view showing a conventional filtration device

** Description of symbols for the main parts of the drawing **

1: filtration tank 2: precipitation part

2a: sludge deposit 2b: sludge discharge pipe

2c: sediment fixing rod 3: low speed rotation motor

4: exhaust hole 5: treated water inlet pipe

6: filtered water discharge pipe 7: the first separator

7a: through hole 8: second separator

9: 1st filtration layer 10: 2nd filtration layer

11: lower collecting part 12: grinding blade

13: backwash water supply pipe 14: hollow shaft

The present invention for achieving the above object, in the conventional filter, to perform a fine filtration in the process of performing the filtration through the filter, as well as to prevent the flocculation phenomenon of the sludge collected in the lower, sludge In the conventional filter, the low-speed rotary motor 3 and the exhaust hole 4 are installed on the upper surface of the filter to prevent sludge from being deposited in the separation part, and a precipitation part capable of performing a precipitation function thereunder ( 2) is installed, the filter tank in which the treatment water inlet pipe (5) on the upper side, the filtered water discharge pipe (6) is formed at the lower side; The first and second separation plates 7 and 8 having a plurality of through holes 7a are installed in the lower side of the filtration tank 1, but the first filtration layer 9 is disposed above the first separation plate 7. And, the first and second separation plates (7) (8) between the second filtering layer (10), the lower portion of the second separation plate 8 and the filter unit is installed so that the lower collecting portion (11) is formed; It is characterized in that it is provided with a hollow 14 is connected to the low-speed rotary motor (3) to the upper portion of the filtration unit and a plurality of grinding blades 12 are formed at the bottom.

Hereinafter, described with reference to the accompanying drawings a preferred embodiment of the present invention as follows.

1 is a partial cutaway perspective view showing the configuration of the present invention, Figure 2 is a longitudinal cross-sectional view according to Figure 1, Figure 3 is a cross-sectional view taken along the line A-A of FIG.

A low speed rotary motor 3 and an exhaust hole 4 driven at a low speed are installed on an upper surface thereof, and a treated water inflow pipe 5 penetrates through an upper surface thereof and flows in from an outward direction. A filtration tank (1) forming a filtration water discharge pipe (6) which is connected to be discharged into and configured to form a body for treating the treated water;

The first and second separation plates 7 and 8 having a plurality of through holes 7a are installed in the lower side of the filtration tank 1, and the sand and the like are loaded on the upper side of the first separation plate 7. A filtration layer 9 is formed, and a second filtration layer 8 such as anthracite having excellent adsorption property is formed between the first and second separation plates 7 and 8, and the second separation plate 8 is formed. In the lower portion of the first and second filtration layers (9) (10) and the first and second separation plates (7), the lower collecting portion (11) is formed to collect the filtered water passing through the through hole (7a) of 8 A filtering unit;

A hollow shaft 14 connected to the low-speed rotary motor 3 to the upper part of the filtration unit and provided with a plurality of crushing blades 12 formed to crush sludge of the surface of the filtration yarn clogged during filtration;

In the upper part of the filtration unit, a sedimentation unit 2 for firstly removing the suspended solids in the treated water before filtration, and a sedimentation unit fixing rod 2c for fixing the sedimentation unit 2 and sedimented sludge are collected. The sludge settling portion 2a and the sludge discharge pipe 2b for discharging these collected sludges are installed.

In the above, the settling portion 2 is supported by the settling portion fixing rod (2c), of course, it is preferable to be fixed to the inside of the filtration tank (1) by a separate extension, if necessary to be more firmly supported. Do.

When described in more detail with reference to the accompanying drawings the working relationship of the present invention configured as described above are as follows.

First, the treated water introduced into the treated water inlet pipe 5 is introduced into the filtration tank 1, and then gradually flows downward by gravity. At this time, the suspended solids (SS) precipitated while passing through the settling unit 2 are collected to the sludge settling unit 2a along the bottom of the inclined settling unit 2, and the collected sludge is collected through the sludge discharge pipe 2b. Exhausted out.

After the first settling, the treated water flows down to the lower filtration part through the HOLE between the sedimentation part 2 and the outer wall of the filtration tank 1, and the treated water is filtered.

In particular, in order to remove sludge that is not detached even after performing the backwashing pointed out as a disadvantage of the existing filtration tank, the apparatus installs the hollow shaft 14 in the low-speed rotary motor 3, and the first filtration layer 9 at the bottom of the hollow shaft. ) The grinding blade 12 was installed to match the surface to prevent firmness of the suspended solid and sand layer attached to the surface of the filter layer.

Meanwhile, the filtered water is formed of anthracite through the through hole 7a of the first separation plate 7 while the fine particles of impurities contained in the treated water are removed from the first filtration layer 9 formed of sand or the like. After the second filtration layer 10 is filtered again, the second collecting plate (8) is collected through the lower collecting portion (11) and then discharged through the filtered water discharge pipe (6).

As described above, according to the present invention, a precipitate is installed on the upper part of the filter in the process of performing the filtration through the filter, and then the suspended solids are first removed, and the filter is formed in two layers in two steps. By forming the plate so as to be partitioned, it is possible to perform more precise filtration.

In addition, by pulverizing the flocculation phenomenon of the sludge collected on the surface of the filter layer through the grinding blade provided on the rotary shaft, there is a condition that can increase the flotation force of the sludge during backwashing to rise a larger amount of sludge.

Claims (1)

In a conventional filter, a low speed rotary motor (3) and an exhaust hole (4) are provided on the upper surface; Underneath it, a precipitation part 2 capable of performing the precipitation function is installed; A filtering tank in which an upper surface of the treatment water inlet pipe 5 is formed, and a lower portion of the filtered water discharge tube 6 is formed; The first and second separation plates 7 and 8 having a plurality of through holes 7a are installed in the lower side of the filtration tank 1, but the first filtration layer 9 is disposed above the first separation plate 7. And, the first and second separation plates (7) (8) between the second filtering layer (10), the lower portion of the second separation plate 8 and the filter unit is installed so that the lower collecting portion (11) is formed; Filtration device having a precipitation function, characterized in that it is provided with a hollow 14, which is connected to the low-speed rotary motor (3) to the upper portion of the filtration unit and provided with a plurality of grinding blades 12 formed at the bottom.