JPS6295155A - Liquid treatment apparatus with hinge action cleaning brush - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a device for treating industrial wastewater, etc. by electrode action to promote agglomeration and precipitation of ionized particles in the liquid, and is particularly effective from the counter electrode surface. The present invention relates to a device for cleaning accumulated particles that interfere with electrode action.

There are many devices that clean the electrodes of liquid processing equipment between operations.
For example, U.S. Patent No. 4.23G, No. 990, 4.242.1
There are No. 90, No. 4,292,163, and No. 4.444.637.

Ming? Subesa pl.

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid treatment device that has appropriate electrode action through effective electrode cleaning.

Means and operation for solving the problem The hinge-acting cleaning brush according to the present invention flexibly presses against the electrode surface to be cleaned and engages in cleaning action, and the electrode or the brush or both rotate. The relative motion between the two then performs an effective cleaning action, moving the 1114 deposited particles away from the electrode.

In the first embodiment, the hinge action is particularly suitable;
Both electrodes of the device are arranged concentrically and two sets of cleaning brushes are used, one attached to the fixed electrode to clean the inner rotating electrode, and the other attached to the rotating electrode to clean the fixed electrode between rotations. The cam system temporarily retracts one brush out of the path of the other brush each rotation, preventing collision of the brushes.

A second embodiment attaches a hinged brush to a rotating support member. It rotates intermittently to engage and release the electrode without continuously contacting the electrode surface. After holding the brush in the electrode contact position for a predetermined period of time, the brush is rotated out of the contact position. This v
A spring device associated with the brush rapidly rotates the brush back to its home position during the J-stroke. The rapid rotation and rapid movement in the liquid results in self-cleaning of the brush. By using separate brushes and rotating support members, the timing of adjacent brush and support member sets can be determined so that opposing brushes on both support members are periodically aligned and oppositely charged for auxiliary use. An electrical processing section is formed therebetween.

Point-1-1 The liquid processing device 10 according to the present invention has a conductive cylindrical housing 12, with a liquid inlet 14 at the lower end and a liquid outlet 1 near the upper end.
It has 6. The bottom of the housing 12 is shaped as a brim 18 or the like to receive precipitated material from the liquid processed within the processing apparatus 10. The hopper 18 is located on the right side of the discharge port 20 and is controlled and regulated by a discharge valve (not shown). The housing 12 is connected at its upper end by a conductor 22 to one side of a potential source.

Two vertically spaced dielectric rectangular support members 24, 26 extend across the top and bottom ends of the housing 12 to rotationally support the vertical shaft 28. The shaft 28 is driven by a motor 30 via pulleys 32 and 34 and a belt 3G.

Shaft 28 supports a cylindrical inner electrode 38 . The electrode 38 is concentric with the housing 12, has a slightly smaller diameter, and has an annular annular section 40 formed therebetween from the top to the bottom of the housing.

Inner electrode 38 can have a variety of different shapes.

Illustratively, a tube 42 of dielectric material is coated with a conductive skin 44 in a tubular structure. Both ends of the tube 42 are capped with caps 46.
Closed at 48. Charging of the outer skin 44 is supplied via a conductor 46 from the opposite side of the potential source. Conductive wire 48 connects to conductive contact 48, which contacts conductive shaft 28.

Necessary means, not shown, within tube 42 provide electrical continuity between shaft 28 and skin 44.

A cleaning brush 50 is attached to the cylinder 12 and contacts the outer skin 44 during rotation of the inner electrode 38 to clean the outer skin. brush 50
is long as shown in FIG. 1, and contacts the entire desired length of the electrode 38. The brush 50 is contained within two i'I chain side chambers extending the entire length along the outer periphery of the cylinder 12.

The brush 50 has a strip of metal bristles 54 in a holder 56.
The holder 56 is fixed to the hinge 58.

The hinge 58 is preferably made of rubber, which is a synthetic resin material.

The hinge 58 is fixed to the outer surface of the cylinder 12 by a set screw 60 or the like. An auxiliary leaf spring 62 made of stainless steel or the like causes the bristles 54 to protrude into the annular portion 40 so that the outer skin 44 of the electrode 38
creates a flexible pressing force that contacts the surface in a cleaning manner.

The rubber hinge 58 has a certain degree of pressure and hinge performance due to the elasticity of wood.

A second cleaning brush 64 is attached to the inner electrode 38 and rotated together with the inner electrode, and the brush 50 is similar to 7, and includes bristles 66 made of metal or the like, a holder 66 for the bristles, and a hinge 70 made of a synthetic resin-like material such as rubber. and a plate spring 72 made of stainless steel. The brush 64 is attached to the inside of the tube 42 with a set screw 74 and is biased by a leaf spring 72.

Due to the inherent elasticity of the rubber hinge 70 and the leaf spring, the brush 6
4 projects radially outwardly from the vertical slot 76 of the tube 42 and contacts the inner surface of the cylinder 12. Lower cap 48
A notch, such as notch 78 , mates with the slot 76 to permit pivotal movement of the bristles 66 in and out of the tube 42 .

As shown in FIG. 1.4.5, the support member 24.26 is provided with a radially inwardly facing cam shoulder 80.82 positioned above and below the inner electrode and only a short dimension from the outer circumference of the electrode 38. Projects radially inward. Cam surfaces 84 projecting radially outward at the upper and lower ends of the brush holder 68 on the inner electrode 38
．． A cam shoulder 80.82 projects into the path of
A short distance of contact is made between each rotation of the llI electrode 38. As shown in FIG. 5, the cam portion 80.82 is located at the attachment point of the brush 50 and bends the brush 64 inwardly to move the bristles 66 away from the bristles 54 of the brush 50. This prevents the inner electrode 38 from colliding with each other during rotation.

FIG. 6 shows a second embodiment of the present invention combined with different types of processing equipment.
An example is shown below.

The processing device 110 of FIG. 6 has a U-shaped gutter 112 with both ends closed and the top open. An inlet 114 introduces the liquid to be treated into the gutter 112, and an outlet (not shown) leads out the treated liquid. A discharge port 116 at the bottom of the gutter 112 discharges sediment and is opened and closed by a required control valve (not shown).

Two rotating electrodes 418, 120 are mounted within the trough 112 and connected to opposite sides of a potential source to create opposite charges on the surfaces, creating an electric field in the portion 122 between the two electrical outlets 118, 120.

A scraper 1 is attached to each electrode 118, 120 as required.
24 near the top edge as described in U.S. Pat. No. 4,292,163. Electrodes 118 and 120 are indicated by arrows 724
, 126 in the opposite direction.

ta112) 11118, 120 (D lower D 2 pieces C
') Rotation support members 128, 130 are indicated by arrows 132, 1
The rotation is supported in the opposite direction as indicated by 34. Each support member 1
28, 130 are made of dielectric material, and diametrically opposed cleaning brushes 136, 138 of 2 MA are mounted with the same construction as the brushes 50, 64 of the first embodiment. That is, each brush 136, 138 has a series of metal bristles 140 attached to a dielectric holder 142, and the holder 142 is attached to a rubber hinge 14.
4 to the outer periphery of the support members 128 and 130. Instead of leaf springs, one or more tension springs 146 are coupled between the holder 142 and the surfaces of the support members 128, 130 to maintain the holder 142 in a substantially radially outwardly projecting arrangement with the hinge 144. In a preferred embodiment, the holder 142 exposes and covers only the tips of the bristles 140, and the bristles 140 are connected to a conductive sleeve on a conductive solid shaft 152 by the required conductive wire 148, with the shaft connected to a potential source on the same side as the counter electrode. Connect to. As shown, the bristles 140 on the support member 130 have a charge on the same side as the counter electrode 120, and the bristles 140 on the support member 130
The 8 bristles 140 have a similar opposite charge as the mandrel 118.

The operation will be explained.

The use and operation of processing device 10 will be apparent from the foregoing detailed description. That is, as the inner electrode 38 rotates within the housing 52, the ionized particles adhering to both electrode surfaces are continuously cleaned by the brushes 50, 64.

Before the inner electrode 38 completes each rotation, the cam surface 84.86 associated with the inner brush 64 contacts the cam n portion 80.82, causing the hinge 70 and spring 72 to rotate radially inwardly, causing the brush 64 to rotate radially inwardly. into the electrode 38 and pass the brush 50 through it. If the electrode 38 is rotated to a position where it has passed the brush 50,
As the cam surfaces 84, 86 pass through the cam shoulders 80.82, the hinge 70 and leaf spring 72 force the bristles 66 radially outwardly to contact and clean the interior surface of the housing 12.

In the case of the processing device 110, the support members 128, 130 are connected to a driver II device that rotates the support members and stops them every 90 degrees for a predetermined period of time. The brushes 136 , 138 of each holder 128 , 130 periodically connect the electrodes 118 , 12
0, and after being in contact for a predetermined period of time, rotates 90 degrees and assumes the dotted line position in FIG. Each support member 128, 130
Although two brushes 136 and 138 are shown in the figure, four brushes can be attached as required.

One of the brushes 136 and 138 is connected to the electrodes 118 and 120
When the bristles 140 contact the electrode surface, the rotational force of the hinge 144 and the tension of the spring 146 ensure that the bristles 140 contact the electrode surface.

Therefore, an excellent cleaning effect can be obtained. Support member 128゜1
It is clear that if 30 rotates continuously, the brushes 136, 138 will be in cleaning contact with the electrode surface for a long time due to the hinge action, in contrast to the case where the brushes 136, 138 are stationary and project radially outward. There is.

Once the brushes 136, 138 have cleaned and come into contact with the electrode surface, the brushes are retracted by the hinge 144 and are no longer in contact with the electrode surface. As the support member rotates and the brushes are separated, the springs 146 rapidly urge the bristles 140 and holder 142 into a radial position, and this sudden movement dislodges the accumulated particles from the bristles 144. Thus, the rapid return is caused by the brush 136
, 138 becomes a self-cleaning action.

The tips of the bristles 140 are electrically charged, and the brushes 136°138
have opposite charges of the opposing support members 128, 130,
Therefore, when the brushes 136 and 136 face each other, the auxiliary processing section 154 is formed in the middle, and the liquid in the gutter 112 receives an electric field at a different position. The effect is great when the support members 128 and 130 maintain opposing positions for a predetermined period of time.

1 ■ Second Emperor I Ionized particles that collect on the electrode surface of an electrostatic treatment device for wastewater, etc. are separated from the electrode by a hinge-supported cleaning brush to improve the function of the electrode. In the first embodiment, the inner electrode of two concentric electrodes is rotated, and a hinge-acting brush attached to each electrode and protruding comes into contact with the surface of the other electrode. To avoid brush collisions, the inner electrode brush is rotated into the electrode by a cam, allowing the fixed outer brush to pass.

In a second embodiment, a hinged brush contacts a counter rotating electrode. If you rotate the support member that supports the brush,
The brush quickly returns after passing the electrode surface, resulting in a self-cleaning action. The brushes are electrically charged, and when the brushes stop at positions facing each other, a second electrical processing section is formed.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a liquid processing apparatus according to the present invention, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along line 3-3 in FIG. 1, and FIG.
5 is a partially enlarged sectional view of the lower part of the apparatus shown in FIG. 1, FIG. 5 is a partially enlarged sectional view taken along line 5--5 in FIG. 4, and FIG. FIG. 10, 110... Processing device 12... Housing 20, 116... Discharge port 24.26...
Support members 28, 152...shaft 30...
Motor 38... Inner electrodes 40, 122, 154... Processing section 50, 64, 136, 138... Metal brush 54,
66, 140...Bristles 56, 58.142...Holder 58, 70.144...Hinge 62.72...
Leaf spring 80.82...Cam n part 84.86.
...Cam surface 11212.1 11B,
120...Rotating electrode 128, 130...Rotating support member 146...Tension spring (5 people)

Claims (1)

[Claims] 1. In a liquid treatment device having an electrode device for generating an electric field, the electrode device is provided with a long cleaning device for cleaning adhering particles from the electrode, and the cleaning device has a long cleaning device close to the electrode. A support member, a cleaning member, a hinge device for swingably attaching the cleaning member to the support member, a device for flexibly pressing the cleaning device around the hinge device to engage the electrode, and the electrode and the support member. and a device for relatively rotating the electrodes and sweeping the electrode surface with a cleaning member between the relative rotations. 2. The device according to claim 1, wherein the support member is kept stationary and the electrode is rotated. 3. The support member is provided with the second electrode of the electrode device, and a cleaning member is hingedly attached to each electrode and flexibly press-engaged with the opposite electrode. Apparatus described in section. 4. A claim characterized in that at least one of the cleaning members is provided with an actuation device that operates to temporarily rotate one cleaning member to a position that avoids the other cleaning member during relative rotation of the electrodes. The device according to item 3 within the range of 5. The second electrode is fixed and the other electrode is rotated, and the actuating device includes a first cam surface that moves together with the rotating cleaning member, and a second cam surface on the fixed electrode within the movement path of the first cam surface. Claim 4, characterized in that it comprises a cam surface of
Apparatus described in section. 6. The device according to claim 1, wherein the hinge device is provided with an elastic synthetic resin flap. 7. Claim 6, characterized in that the flexible pressing device is provided with an elastic metal plate spring attached to the flap.
Apparatus described in section. 8. The apparatus of claim 1, wherein said cleaning member is provided with a plurality of relatively rigid metal bristles. 9. The apparatus for making the supporting member rotatable and intermittently causing the cleaning member to engage and disengage from the electrode for relative rotation may periodically stop the rotation of the supporting member while the cleaning member is engaged with the electrode. An apparatus according to claim 1, characterized in: 10. The device according to claim 9, wherein the electrode is rotatable and the support member rotates in the opposite direction. 11. The flexible pressing device is characterized in that when the rotating cleaning member is separated from the electrode, the cleaning member is rapidly rotated about the hinge device to perform a self-cleaning snap action. Apparatus described in section. 12. The electrode device is provided with two oppositely charged electrodes, each electrode is provided with a respective cleaning member, a support member, a hinge device, and a flexible pressing device, and the relative rotational movement device is provided with a support member. The cleaning member is rotated and stopped intermittently to alternately bring the cleaning member into a position where it engages with each electrode and a position where the cleaning member is separated from each other and faces each other, and the cleaning member is provided with a conductive portion having an electric charge of the same polarity as each electrode. 2. The apparatus according to claim 1, wherein an electric field is generated between the cleaning members when the conductive portions of the cleaning members are in the opposing positions. 13. The apparatus according to claim 12, wherein the electrically conductive portion of the cleaning member is made of metal bristles, and only the tips of the bristles are exposed and covered with a layer of dielectric material.