JP7097733B2 - Stirrer - Google Patents

Description

The present invention relates to a stirrer, particularly a stirrer such as a microbial reaction device or a wastewater treatment device that treats a liquid such as wastewater having a carrier carrying a microorganism or a catalyst while stirring.

In order to treat the wastewater, there is a method of purifying the wastewater by stirring a carrier carrying a microorganism or a catalyst on the wastewater.

19 and 20 show a stirring device such as a conventional microbial reaction device, 1 is a stirring device, 2 is a processing tank of the stirring device 1, and the processing tank 2 is, for example, a tank diameter (diameter). The height is 1 to 10 m, and the height is 0.5 to 5 times the diameter of the tank, which is a vertical cylindrical shape.

Reference numeral 3 is a rotary blade, wherein the rotary blade 3 has, for example, a blade diameter of 0.3 to 0.6 times the tank diameter, and is vertically installed from the upper part of the treatment tank 2. It is fixed radially to the lower end of the shaft 3a in a radial direction.

The rotary blade 3 is composed of, for example, a rectangular plate-shaped blade plate such as four flat paddle blades, and is placed in the processing tank 2 via a rotary shaft 3a by a driving means (not shown) such as a motor. It is provided to rotate in the upper part of the liquid contained to a desired height, for example, in the vicinity of the liquid surface.

Reference numeral 4 denotes a stationary blade, wherein the stationary blade 4 is composed of, for example, four plurality of linear strips, and is radially equiangular with the center of the bottom portion 2a of the processing tank 2 below the rotary blade 3. It is fixed apart from the wing.

Further, in each of the strips, for example, as shown in FIG. 20, the central portions of the strips corresponding to the intersections of the strips have a gap 5 with each other, and the strips are, for example, the said. It is fixed in parallel in front of the rotary blade 3 in the rotation direction with a distance d from the radius line R passing through the center of the bottom portion 2a.

Reference numeral 6 is an inflow pipe, which is provided, for example, in the lower part of the side wall of the treatment tank 2 so as to contain a liquid such as treated water to be treated in the treatment tank 2. .. The inflow pipe 6 may be provided in the upper part of the processing tank 2.

Reference numeral 7 denotes a carrier separation chamber, and the carrier separation chamber 7 is made of, for example, a box body extending in the vertical direction, is provided on the outside of the side wall of the treatment tank 2, and at the lower end, the lower end of the side wall of the treatment tank 2. A discharge port 9 is provided at the upper part so as to communicate with the opening 8 provided in the above.

In the conventional stirring device, a liquid such as treated water having a carrier carrying a microorganism, a catalyst, or the like is allowed to flow into the treatment tank 2 to a desired height, and the rotary blade 3 is rotated to rotate the rotary blade 3. As shown in FIG. 19, the treated water in the treatment tank 2 is discharged outward in the radial direction by the rotary blade 3, abuts on the inner surface of the side wall of the treatment tank 2, and is along the inner surface of the side wall. While swirling, a gentle downward flow P toward the bottom of the lower tank is formed, and then, in the central portion of the bottom of the treatment tank 2, the stationary blade 4 causes an upward flow Q, whereby the rotary blade 3 is formed. A circulating flow is formed between the blade and the stationary blade 4, and the carrier can be prevented from being damaged by, for example, low shear and low power in the processing tank 2, and the liquid can be mixed and uniformly dispersed. ..

Further, the treated water treated with organisms flows into the carrier separation chamber 7 through the opening 8, and the carrier contained in the treated water sinks downward in the carrier separation chamber 7 and the opening. It is returned to the treatment tank 2 from the part 8, and only the treated water without a carrier is discharged to the outside from the discharge port 9 at the upper part.

Japanese Unexamined Patent Publication No. 2000-246269

However, in the conventional carrier separation chamber 7, the carrier that has entered the carrier separation chamber 7 is difficult to return to the treatment tank 2, and only the treated water without the carrier is efficiently discharged from the discharge port 9 to the outside. I couldn't.

An object of the present invention is to provide a stirring device having a simple structure, preventing discharge of a carrier or the like to the outside of a treatment tank, and efficiently discharging only treated water without a carrier to the outside.

In order to achieve the above object, the stirring device of the present invention has a processing tank containing a liquid having a carrier, a rotary blade provided in the processing tank, and radially extending fixed to the bottom of the processing tank. The carrier separation chamber is composed of a stationary blade and a carrier separation chamber, and the carrier separation chamber has a flow path chamber portion having an upper opening and a lower opening formed so as to communicate with each other in the treatment tank, and a lower portion of the flow path chamber portion. It is characterized by comprising a separation chamber portion having a drainage opening formed so as to communicate with the above and a discharge port provided at the upper part.

Further, on the rear side of the lower opening in the rotation direction of the rotary blade, a cover plate inclined toward the center direction in the processing tank is provided toward the front side in the rotation direction. It is a feature.

Further, the lower opening is characterized in that the opening area of the lower opening is formed to be larger than the opening area of the upper opening.

Further, the flow path chamber portion is characterized in that the flow path cross-sectional area of the upper flow path chamber portion is formed smaller than the flow path cross-sectional area of the lower flow path chamber portion.

Further, the carrier separation chamber is formed by a box body having a first partition plate, and the flow path chamber portion and the separation chamber portion extend from the ceiling plate of the box body to a desired position below. It is characterized in that it is partitioned by a first partition plate and each is formed.

Further, the flow path chamber is formed by an upper upper flow path chamber and a lower lower flow path chamber, and the upper upper flow path chamber is below the ceiling plate of the flow path chamber. A second partition plate extending to a desired position is provided, and the second partition plate allows the flow path cross-sectional area of the upper upper flow path chamber portion to be larger than the flow path cross-sectional area of the lower lower flow path chamber portion. Is also characterized by being formed small.

Further, the lower portion of the first partition plate is provided with a straightening vane having a downwardly inclined inclined surface toward the lower opening side.

Further, the separation chamber portion is further provided with a strut plate extending from the bottom surface to a desired height, which faces the first partition plate.

INDUSTRIAL APPLICABILITY The present invention can provide a stirring device having a simple structure, which prevents discharge of a carrier or the like to the outside of a treatment tank and can efficiently discharge only treated water without a carrier to the outside.

It is a vertical sectional side view of the stirring apparatus of Example 1 of this invention. It is a cross-sectional plan view of the stirring apparatus of Example 1 of this invention. It is a vertical sectional side view of the carrier separation chamber of this invention. It is a front view of the carrier separation chamber seen from the inside of a processing tank of this invention. It is an explanatory perspective view of the carrier separation chamber of this invention. It is explanatory perspective view of the carrier separation chamber which separated the cover body of this invention. It is a longitudinal side view of another Example of the carrier separation chamber of this invention. It is a vertical sectional side view for explanation of the carrier separation chamber of this invention. It is a schematic diagram for explanation of the carrier separation chamber of this invention. It is a schematic diagram for explanation of the carrier separation chamber of this invention. It is a schematic diagram for explanation of the carrier separation chamber of this invention. It is explanatory perspective view of the carrier separation chamber of 2nd Example of this invention. It is an explanatory front view of the carrier separation chamber seen from the inside of the processing tank of the 2nd Example of this invention. It is a vertical sectional side view for explanation of the carrier separation chamber of the 3rd Example of this invention. It is a perspective view for explanation of another Example of the carrier separation chamber of the 3rd Example of this invention. It is a vertical sectional side view for explanation of another Example of the carrier separation chamber of the 3rd Example of this invention. It is a front view of another example of the carrier separation chamber seen from the inside of a processing tank of this invention. It is a front view of still another example of the carrier separation chamber seen from the inside of a processing tank of this invention. It is a vertical sectional side view of the conventional stirring apparatus. It is a cross-sectional plan view of a conventional agitator.

Examples of embodiments for carrying out the present invention are shown below. The same parts as those in the conventional example are designated by the same reference numerals, and the description thereof will be omitted.

Example 1 of the present invention will be described with reference to FIGS. 1 to 11.

(1. Explanation of carrier separation chamber)

In the conventional stirring device 1, the stirring device 10 of the present invention provides the carrier separation chamber 11 on the outside of the side wall of the processing tank 2 instead of using the carrier separation chamber 7.

As shown in FIGS. 1 and 2, the carrier separation chamber 11 is composed of two chambers in which the flow path chamber portion 12 and the separation chamber portion 13 are arranged in parallel in the front-rear direction or left and right. Further, the flow path chamber portion 12 is formed so as to extend in the vertical direction and communicate with the treatment tank 2 so that the treatment water from the treatment tank 2 can flow into the treatment tank 2 and the upper opening portion 14. A lower opening 15 provided below the upper opening 14 formed so as to allow the treated water flowing into the flow path chamber 12 to communicate with the treatment tank 2 so as to flow out into the treatment tank 2. And have. Further, the separation chamber portion 13 is formed so as to extend in the vertical direction and communicate with the lower portion in the flow path chamber portion 12 so that a part of the treated water in the flow path chamber portion 12 flows into the separation chamber portion 13. It has a drainage opening 16 at the bottom and a discharge port 17 at the top.

In order to make it easier for the treated water from the treatment tank 2 that has flowed into the flow path chamber 12 from the upper opening 14 to flow out from the lower opening 15 than the drainage opening 16. It is preferable that the upper end opening edge of the drainage opening 16 of the separation chamber 13 is at the same height as or slightly below the upper end opening edge of the lower opening 15.

(2. Explanation of the cover body)

Further, on the edge portion 15a of the lower opening portion 15 on the rear side in the rotation direction of the rotary blade 3, a cover plate 18a extending inclining toward the center direction side of the processing tank 2 toward the front side in the rotation direction is provided. The cover body 18 may be provided to prevent the treated water swirling around the inner peripheral surface of the side wall in the treatment tank 2 from flowing into the flow path chamber portion 12 from the lower opening 15. ..

(3. Explanation of an example of the carrier separation chamber)

As shown in FIGS. 3 to 6, the carrier separation chamber 11 has left and right side walls 11a and 11b whose surfaces are arranged so as to face each other in parallel and extend in the vertical direction, and the side walls of the treatment tank 2. The front plate 11c fixed to the outer peripheral surface, the back plate 11d arranged to face the surface of the front plate 11c, the bottom plate 11e, and the horizontally extending ceiling plate 11f are formed in a box body. The upper opening 14 communicating with the inside of the processing tank 2 is formed at the upper end of the front plate 11c, and the lower opening 15 communicating with the inside of the processing tank 2 is formed at the lower end of the front plate 11c. Will be done.

It is desirable that the opening area of the lower opening 15 is formed larger than the opening area of the upper opening 14.

The carrier separation chamber 11 is provided below the treatment tank 2, and the height (L1) from the bottom of the treatment tank is, for example, 0 with respect to the tank diameter, as shown in FIG. It is installed at a height of 1 to 0.5 times.

Further, as shown in FIGS. 3 and 4, for example, the box-shaped carrier separation chamber 11 has a length (L2) in the vertical direction of 0.3 to 0.6 times the tank diameter. The lateral length (L3) is 0.1 to 0.3 times the tank diameter, and the depth length (L4) is 0.2 to 0 to the tank diameter. It is four times as long.

Further, in the inside of the box, the inside of the box is divided into a front side and a back side between the front plate 11c and the back plate 11d, for example, both sides are connected to the left and right side walls 11a and 11b. , A vertical rectangular first partition plate 19 extending from the ceiling plate 11f to a desired position below is provided.

As shown in FIG. 3, the first partition plate 19 is separated from the front plate 11c by a desired distance (L5), for example, a distance of 0.05 to 0.2 times the tank diameter. Is provided.

The first partition plate 19 extends from the ceiling plate 11f to, for example, a height substantially the same as the upper end edge of the lower opening 15, and is between the lower end of the first partition plate 19 and the bottom plate 11e. The drainage opening 16 will be formed in.

Then, the first partition plate 19 forms two rooms in the box body, one room on one side of the first partition plate 19 and the other room on the other side. The flow path chamber portion 12 and the separation chamber portion 13 are formed, respectively.

That is, the box body is divided into two front and rear chambers by, for example, the first partition plate 19, the front side becomes the flow path chamber portion 12, and the back side becomes the separation chamber portion 13.

The front plate 11c may be formed of the side wall itself of the processing tank 2.

Further, the upper opening 14 is formed in, for example, a rectangular opening, from the left side wall 11a to the right side wall 11b in the horizontal direction (left-right direction), and in the vertical direction (vertical direction) the ceiling. It is formed downward from the plate 11f with a desired length (L6), for example, 0.01 to 0.1 times the length of the tank diameter.

Further, the lower opening 15 is formed in, for example, a rectangular opening, and the lateral direction (left-right direction) reaches from the left side wall 11a to the right side wall 11b, and the vertical direction is from the bottom plate 11e. It is formed upward to a desired length (L7), for example, 0.05 to 0.2 times the tank diameter. It is preferable that the length (L7) of the opening of the lower opening 15 is larger than the length (L6) of the opening of the upper opening 14 in the vertical direction. The treated water in the flow path chamber portion 12 is easily discharged into the treatment tank 2 through the lower opening portion 15.

The bottom plate 11e may be inclined linearly as shown in FIG. 7, in addition to being curved in a concave shape as shown in FIG. 3, for example.

Further, the bottom plate 11e may extend horizontally from the edge of the lower opening 15 and be inclined upward in a straight line from there to be connected to the back plate 11d.

Further, as shown in FIG. 4, in addition to providing the lower opening 15 directly below the upper opening 14, for example, as shown in FIG. 17, the upper opening 14 is provided in the rotation direction of the rotary blade 3. The lower opening 15 is formed on the rear side of the rotary blade 3 on the front side in the rotation direction of the rotary blade 3, and the lower opening 15 is formed on the rotation direction of the rotary blade 3 with respect to the upper opening 14. It may be provided diagonally downward on the front side with respect to the vehicle.

Further, as shown in FIG. 18, the flow path chamber portion 12 may be inclined diagonally downward so as to face forward with respect to the rotation direction of the rotary blade 3 toward the downward direction.

As a result, the flow velocity of the liquid flowing from the processing tank 2 into the flow path chamber portion 12 can be increased, and the carrier in the liquid can easily return to the treatment tank 2 from the lower opening 15.

(4. Explanation of an example of the cover body)

Further, as shown in FIGS. 5 and 6, for example, the cover body 18 is provided on the rear side edge portion 15a of the rotary blade 3 in the rotational direction of the lower opening portion 15, and is provided on the front side in the rotational direction. A rectangular cover plate 18a having a size that substantially covers the lower opening 15 extending toward the center of the processing tank 2, and an upper side of the cover plate 18a and the lower opening 15 The front side in the rotation direction, which comprises a substantially triangular upper plate 18b connecting the upper edge and a substantially triangular lower plate 18c connecting the lower side of the cover plate 18a and the lower edge of the lower opening 15. In addition, it is formed in the shape of a cylinder having a triangular cross section in which a substantially square opening 18d is formed.

Then, the treated water from the flow path chamber portion 12 flows into the cover body 18 through the lower opening portion 15 and is discharged into the processing tank 2 from the opening portion 18d of the cover body 18. become.

The lower plate 18c may be omitted, and the lower portion of the cover body 18 may also be opened.

The cover body 18 prevents the treated water in the treatment tank 2 from flowing back from the lower opening 15 into the flow path chamber portion 12, and the treated water in the flow path chamber portion 12 flows into the treatment tank. It becomes easy to leak inside.

(5. Explanation of wastewater treatment method and effect)

Next, the treatment method and the effect by the stirring device of the first embodiment will be described.

A liquid such as treated water having a carrier carrying a microorganism or a catalyst is allowed to flow into the treatment tank 2 to a desired height from the inflow pipe 6 so that the liquid is stored in the treatment tank 2. ..

By rotating the rotary blade 3, the treated water having a carrier in the processing tank 2 shown in FIG. 1 is discharged outward in the radial direction by the rotary blade 3 as in the conventional apparatus shown in FIG. Then, it abuts on the inner surface of the side wall of the treatment tank 2 and flows downward to slowly form a downward flow P toward the bottom 2a of the treatment tank 2 while swirling the inner surface of the side wall of the treatment tank 2. At the bottom of the central portion of 2, the stationary blade 4 causes an ascending current Q, whereby a circulating flow is formed between the rotary blade 3 and the stationary blade 4 and processed in the processing tank 2. It will be possible to mix and uniformly disperse water.

Further, as shown in FIG. 8, a part of the swirling downward flow P flows into the flow path chamber 12 from the upper opening 14, and the flow of the downward flow P in the flow path chamber 12. A relatively strong downward flow R is formed along the flow path R, descends in the flow path chamber portion 12, and returns to the processing tank 2 from the lower opening portion 15, at this time, the flow path chamber portion 12. The carrier that flows inside and has a heavier specific gravity than the treated water is returned to the treatment tank 2 from the lower opening 15 as it is through the cover body 18 together with the descending flow R.

Then, as shown in FIG. 8, only the treated water without a carrier flows into the drainage opening 16, and the downward flow toward the discharge port 17 enters the separation chamber 13. A discharge flow S having a weaker flow than R is formed, and only the treated water without a carrier can be discharged to the outside of the tank from the discharge port 17.

Further, even if a part of the carrier flows into the separation chamber portion 13, the carrier having a specific gravity heavier than that of the treated water settles downward and enters the flow path chamber portion 12 through the drainage opening 16. It returns and is returned to the inside of the processing tank 2 from the lower opening 15.

Further, since the cover body 18 prevents the swirling flow in the processing tank 2 from entering from the lower opening 15, the carrier does not interfere with the downward flow R in the flow path chamber 12. The outflow into the processing tank 2 can be smoothly performed.

(6. Explanation of other embodiments of the partition plate)

In the vertically formed first partition plate 19, as shown in FIG. 9, a rotary flow is generated in the lower portion of the separation chamber portion 13, and the carrier in the flow path chamber portion 12 is involved. Then, it may enter the separation chamber portion 13.

Therefore, as shown in FIG. 10, the lower portion of the first partition plate 19 has an inclined surface 20a inclined toward the lower opening 15 from the upper side to the lower side, for example, a triangle having a triangular cross section. A columnar rectifying unit 20 is provided.

The inclined surface 20a of the rectifying portion 20 allows the treated water passing through the flow path chamber portion 12 to flow toward the lower opening portion 15, and a rotating flow is generated in the lower portion of the lower surface of the rectifying portion 20. It is formed so that the carrier is less likely to be involved in the separation chamber portion 13.

As shown in FIG. 10, the rectifying portion 20 having a triangular cross section is formed so that the lower surface 20b facing the partition plate 19 from the lower end of the inclined surface 20a faces upward, and the lower surface 20b and the above surface are formed. The angle formed by the first partition plate 19 is formed in an obtuse angle, and in this case, a rotary flow is formed under the lower surface 20b, and a part of the rotary flow is formed in the separation chamber portion 13. Since it is formed, the carrier in the flow path chamber portion 12 may be caught in the separation chamber portion 13.

Therefore, as shown in FIG. 11, the lower surface 20b is an inclined surface that inclines downward, and the angle formed by the lower surface 20b and the first partition plate 19 is an acute angle or a right-angled triangular cross section. By providing the columnar rectifying portion 20, a rotating flow formed on the lower surface may be generated on the flow path chamber portion side so that the carrier in the flow path chamber portion is not caught in the separation chamber portion.

(7. Explanation of Other Examples of Carrier Separation Chamber)

In the carrier separation chamber 21 of the second embodiment of the present invention, in the first embodiment, the flow path chamber portion 12 of the carrier separation chamber 11 has a flow path cross-sectional area of the lower flow path chamber portion. , The upper opening 14 is formed in the upper channel chamber, and the lower opening 15 is formed in the lower opening 15 so as to be larger than the cross-sectional area of the channel in the upper channel chamber. It is formed in the flow path chamber.

(8. Explanation of an example of another embodiment of the flow path chamber)

The flow path chamber portion 12 of the carrier separation chamber 21 is formed by, for example, an upper upper flow path chamber portion 12a and a lower lower flow path chamber portion 12b thereof, and the upper flow path chamber portion 12a is, for example, the figure. As shown in 12 and FIG. 13, a second partition plate 22 for narrowing the upper flow path is provided in the flow path chamber portion 12 of the carrier separation chamber 11 of the first embodiment, and the second partition plate 22 is provided. The partition plate 22 of 2 is composed of a portion surrounded by the partition plate 22, the first partition plate 19, the right side wall 11b, and the front plate 11c, and the lower flow path chamber portion 12b is the upper flow path chamber. It is composed of the flow path chamber portion 12 below the portion 12a.

Then, as shown in FIG. 12B, the flow path cross-sectional area A of the lower flow path chamber portion 12b is formed larger than the flow path cross-sectional area B of the upper flow path chamber portion 12a. ..

Then, the upper opening portion 14 is formed in the upper part of the upper flow path chamber portion 12a in which the flow path is narrowed, and the lower opening portion 15 is formed in the lower flow path chamber portion 12.

The second partition plate 22 partitions, for example, between the left side wall 11a and the right side wall 11b, for example, in the middle portion, and the upper part in the flow path chamber portion 12 to the left side and the right side, for example. The front and rear sides are connected to the front side plate 11c and the partition plate 19, and are formed in a vertical rectangular shape extending from the ceiling plate 11f to the lower end of the partition plate 19 (or the upper edge of the lower opening). ..

Further, the upper opening 14 is formed at the upper end of the front plate 11c between the second partition plate 22 and the right side wall 11b.

The first partition plate 19 may omit a portion unnecessary for the configuration of the upper flow path chamber portion 12a, for example, a portion from the left side wall 11a to the second partition plate 22.

The upper opening 14 is formed, for example, in a rectangular opening, and the lateral direction (horizontal direction) reaches from the second partition plate 22 to the right side wall 11b, and the vertical direction (vertical direction) is. It is formed downward from the ceiling plate 11f to a desired length.

The length of the upper opening 14 in the vertical direction (vertical direction) is, for example, 0.01 to 0.1 times the diameter of the tank, as in the case of L6, in the vertical direction of the lower opening 15. The (vertical direction) length is, for example, 0.05 to 0.2 times the tank diameter, as in the case of L7.

(9. Wastewater treatment method and effect)

In the second embodiment of the present invention, the flow velocity of the treated water flowing into the flow path chamber portion 12 becomes slow when flowing from the upper flow path chamber portion 12a into the lower flow path chamber portion 12b. The carrier is easily discharged from the lower opening 15, whereby the carrier does not enter the separation chamber 13 through the drain opening 16.

For example, in the carrier separation chamber 21 of the second embodiment, as shown in FIG. 14, the separation chamber portion 13 faces the surface of the first partition plate 19 and is desired above the bottom plate 11e. A vertical rectangular plate-shaped strut plate 23 may be provided.

The strut plate 23 is connected to the left and right side walls 11a and 11b of the carrier separation chamber 21 on both sides thereof, and is connected to the first partition plate at a desired distance (L8), for example, with respect to the tank diameter. It is provided at a distance of 0.01 to 0.05 times.

The discharge port 17 is provided, for example, on the ceiling plate 11f between the counter plate 23 and the back plate 11d.

By providing the abutment plate 23 in the separation chamber portion 13 in this way, it becomes possible to further prevent the carrier from flowing into the separation chamber portion 13.

15 and 16 show an example in which the upper end side of the counter plate 23 and the back plate 11d are closed by the closing plate 24 in the carrier separation chamber 13.

Also in this embodiment, as shown in FIG. 16, carrier separation can be performed.

The stirring device of the present invention can also be used for anaerobic treatment, aerobic treatment, denitrification / nitrification treatment, etc., and is also used in industrial wastewater and domestic wastewater such as electronic industry, food, livestock, agriculture, office, and sewage. It is available.

1 Stirrer 2 Processing tank 2a Bottom 3 Rotating blade 3a Rotating shaft 4 Static blade 5 Gap 6 Inflow pipe 7 Carrier separation chamber 8 Opening 9 Outlet 10 Stirring device 11 Carrier separation chamber 11a Left side wall 11b Right side wall 11c Front plate 11d Back plate 11e Bottom plate 11f Ceiling plate 12 Flow path chamber 12a Upper flow path chamber 12b Lower flow chamber 13 Separation chamber 14 Upper opening 15 Lower opening 15a Edge 16 Drainage opening 17 Discharge port 18 Cover body 18a Cover plate 18b Upper plate 18c Lower plate 18d Opening 19 First partition plate 20 Rectifying unit 20a Inclined surface 20b Lower surface 21 Carrier separation chamber 22 Second partition plate 23 Standing plate 24 Closing plate

Claims (13)

A treatment tank that can hold a liquid with a carrier,
The rotor blades provided in the processing tank and
Radially extending stationary wings fixed to the bottom of the treatment tank,
Consisting with a carrier separation chamber,
The carrier separation chamber includes a flow path chamber portion having an upper opening and a lower opening formed to communicate with the inside of the treatment tank, and a drainage opening formed to communicate with the lower portion of the flow path chamber portion. It consists of a separation chamber having a discharge port provided at the top .
The lower opening is provided with a cover plate inclined toward the center in the processing tank toward the front side in the rotation direction on the rear side of the rotary blade in the rotation direction. Stirrer. The stirring device according to claim 1, wherein the lower opening is formed so that the opening area of the lower opening is larger than the opening area of the upper opening. According to claim 1 or 2, the flow path chamber portion is formed so that the flow path cross-sectional area of the upper flow path chamber portion is smaller than the flow path cross-sectional area of the lower flow path chamber portion. The stirrer according to the description. A treatment tank that can hold a liquid with a carrier,
The rotor blades provided in the processing tank and
Radially extending stationary wings fixed to the bottom of the treatment tank,
Consisting with a carrier separation chamber,
The carrier separation chamber includes a flow path chamber portion having an upper opening and a lower opening formed to communicate with the inside of the treatment tank, and a drainage opening formed to communicate with the lower portion of the flow path chamber portion. It consists of a separation chamber having a discharge port provided at the top.
The lower opening is a stirring device characterized in that the opening area of the lower opening is formed to be larger than the opening area of the upper opening. The lower opening is provided with a cover plate inclined toward the center in the processing tank toward the front side in the rotation direction on the rear side of the rotary blade in the rotation direction. The stirring device according to claim 4. According to claim 4 or 5, the flow path chamber portion is formed so that the flow path cross-sectional area of the upper flow path chamber portion is smaller than the flow path cross-sectional area of the lower flow path chamber portion. The stirrer according to the description. A treatment tank that can hold a liquid with a carrier,
The rotor blades provided in the processing tank and
Radially extending stationary wings fixed to the bottom of the treatment tank,
Consisting with a carrier separation chamber,
The carrier separation chamber includes a flow path chamber portion having an upper opening and a lower opening formed to communicate with the inside of the treatment tank, and a drainage opening formed to communicate with the lower portion of the flow path chamber portion. It consists of a separation chamber having a discharge port provided at the top.
The flow path chamber portion is a stirring device characterized in that the flow path cross-sectional area of the upper flow path chamber portion is formed smaller than the flow path cross-sectional area of the lower flow path chamber portion. The lower opening is provided with a cover plate inclined toward the center in the processing tank toward the front side in the rotation direction on the rear side of the rotary blade in the rotation direction. The stirring device according to claim 7. The stirring device according to claim 7 or 8, wherein the lower opening is formed so that the opening area of the lower opening is larger than the opening area of the upper opening. The carrier separation chamber is formed by a box having a first partition plate.
Claim 1 is characterized in that the flow path chamber portion and the separation chamber portion are separated from the ceiling plate of the box body by the first partition plate extending downward to a desired position. The stirring device according to any one of 9 to 9. The flow path chamber is formed by an upper upper flow path chamber and a lower lower flow path chamber.
The upper upper flow path chamber portion is provided with a second partition plate extending from the ceiling plate of the flow path chamber portion to a desired position below.
10. The second partition plate is characterized in that the flow path cross-sectional area of the upper upper flow path chamber portion is formed smaller than the flow path cross-sectional area of the lower lower flow path chamber portion. The agitator according to. The stirring device according to claim 10 or 11, wherein a rectifying portion having a downwardly inclined inclined surface toward the lower opening side is provided in the lower portion of the first partition plate. The stirring device according to claim 10, 11 or 12, further comprising a strut plate extending from the bottom surface to a desired height in the separation chamber portion, which faces the first partition plate.

Images