KR102283116B1 - Agitator of anaerobic digester - Google Patents

Abstract

The present invention is an anaerobic digestion tank, which produces biogas by anaerobic fermentation of organic waste and provides a service box for an agitator in a facility that treats wastewater, utilizes the skirt device under the service box, and stops operation while operating the anaerobic digester only by manipulating the level of raw water It enables maintenance of the stirrer without need, and after lifting the stirrer, it crosses the steel plate and reinforcement pipe under the stirrer for safe and simple inspection/maintenance The direction can be easily changed, and the service box, square guide pipe, and rotating disk are made in one piece, so it is possible to maintain perfect airtightness inside and outside the digester by penetrating the lifting wire.

Description

Agitator of anaerobic digester

The present invention relates to a stirrer of an anaerobic digester, and more particularly, the present invention relates to a plant for producing biogas by operating an anaerobic digester in order to eco-friendlyly treat organic wastes such as livestock manure, food waste, sewage sludge, etc. It relates to the installation structure and lifting method of an underwater agitator for homogeneous stirring of sludge inside the digester in operating an anaerobic digester.

Environmental pollution is getting worse due to continuous industrialization and urbanization today, and the shape of discharged wastewater is also diversifying.

The currently generated wastewater is mainly treated by a biological treatment method selectively combined with a physical and chemical method, which can be broadly classified into two types: an aerobic digestion method and an anaerobic digestion method. Although the aerobic fire extinguishing method has disadvantages such as energy consumption for oxygen supply and odor generation, it is widely used due to advantages such as short reaction time.

The anaerobic digestion method has the disadvantage of a relatively long reaction period, but its use is gradually increased due to its advantages such as being suitable for high-concentration organic wastewater treatment, a small amount of generated sludge, and obtaining combustible methane gas that can be used as energy. Also, research on related technologies is being actively carried out.

For anaerobic digestion, especially high-efficiency anaerobic digestion, it should be possible to enhance the activity of microorganisms by increasing the residence time and density of microorganisms and improving the contact between microorganisms and sludge. reactor) and AF (anaerobic filter) have been developed.

Although the anaerobic digestion process using the device is a step forward compared to the prior art, it exposes various problems.

In particular, in plants that produce and utilize biogas by anaerobic digestion of livestock manure and organic waste to generate and nitrify biogas to fuel CNG vehicles or supply city gas and generate fuel cells, and produce compost/liquid manure as digested liquid or purify and discharge plants. Anaerobic digestion tank is an important facility that must exist, and it affects digestion efficiency according to the properties, temperature, and stirring conditions of the incoming organic matter.

If agitation is not performed normally, the digestion performance (the ability to decompose and reduce organic matter due to the activity of anaerobic microorganisms) will drop sharply, and eventually the anaerobic microorganisms will die and the digester will be dredged due to the deposition of organic matter. You can even get to where you need to be.

There are several methods of stirring, such as biogas stirring, stirring by pump circulation, paddle stirring, vertical propeller stirring, and submersible propeller stirring.

As can be seen in Figure 1 of the prior art first invention, the lifting device is located on one side of the wall or is installed on the upper part of the slab.

In the case of anaerobic digesters, it is difficult to set up a device to prevent leakage between the lifting wire and the manhole cover.

Above all, the structure is such that maintenance of the agitator is impossible during the operation of the anaerobic digester due to problems such as biogas leakage.

The second invention of the prior art is registered patent No. 10-0899878, and as can be seen in FIGS. 2 to 4 thereof, the conventional horizontal type underwater stirring device is a stirrer ( impeller) (10); a support shaft (2) that is vertically fixed to the reactor (1) in order to support and install the agitator (10); a stirring direction reciprocating device 100 connected to the support shaft 2 to reciprocate the stirring direction of the stirrer 10; and a reciprocating bracket 60 fixed to the support shaft 2 to connect the stirring direction reciprocating device 100 to the support shaft 2 .

The reciprocating bracket 60 includes a main bracket 61 having a head portion 61a formed on one side; and an auxiliary bracket (63) for fixing the main bracket (61) to the support shaft (2) through a bolt (B).

Figure 2 is a schematic diagram as an embodiment of the second conventional invention, Figure 3 is a side view showing the stirring direction reciprocating device according to the embodiment of the second conventional invention, Figure 4 is a stirring direction reciprocating according to the embodiment of the conventional second invention A plan view showing the rotating device.

2 to 4, the agitation direction reciprocating device 100 according to the second embodiment of the conventional invention includes a housing 110; a driving unit 120 installed in the housing 110; a rotary arm (130) rotated by the driving unit (120); a connection link 140 coupled to the rotary arm 130 with a pin P1; and a clevis joint 150 having one end coupled to the connecting link 140 with a pin P2 and the other end fixed to a reciprocating bracket 60 connected to a support shaft 2 supporting the stirrer 10 . do.

The clevis joint 150 is a member for power transmission, and it is preferable to select a shape and material suitable for working conditions.

A slot S is formed at one end of the connection link 140 , and a pin P1 of the connection link 140 is inserted into the slot S.

The installation and operation of the underwater horizontal stirring device and the stirring direction reciprocating device according to the second embodiment of the conventional invention configured as described above will be described as follows.

First, the agitation direction reciprocating device 100 and the support shaft 2 are fastened using the reciprocating bracket 60 . More precisely, after the support shaft 2 is positioned on the end end face of the main bracket 61, the auxiliary bracket 63 is fastened from the opposite side using the bolt B, so that the reciprocating rotation bracket 60 ) is firmly fixed to the support shaft (2).

Then, the agitation direction reciprocating rotation device 100 is fixedly installed by a conventional fastening means, for example, bolts, welding, or the like, or is fixed so as not to move arbitrarily.

Here, the installation order of the stirring direction reciprocating device 100 and the reciprocating rotation bracket 60 may be changed according to working conditions.

Next, one end of the clevis joint 150 is fixed to the head 61a of the reciprocating rotation bracket 60 .

In this way, when the installation of the stirring direction reciprocating device 100 is completed, the operation of automatically adjusting the stirring direction will be described as follows.

First, when the driving unit 120 operates to rotate the rotary arm 130 , the connection link 140 coupled to the pin P1 to the rotary arm 130 is interlocked with the rotary arm 130 to reciprocate.

By the operation of the connection link 140 , the clevis joint 150 coupled with the pin P2 to the connection link 140 is rotated at a predetermined angle. By the rotation of the clevis joint 150 , the reciprocating rotation bracket 60 and the support shaft 2 are rotated to automatically and continuously reciprocate the stirring direction of the stirrer 10 .

Here, the rotating arm 130 rotates 360° forward/reverse once each, so that the reciprocating rotation bracket 60 can be reciprocally rotated at a predetermined angle, for example, 120° or 90°. At this time, in order for the rotary arm 130 to rotate 360° forward and reverse, a position detection sensor (not shown) must be provided at the time the rotation is completed.

As described above, in the prior invention 1, since the lifting device is located on one wall side or installed on the upper part of the slab, 360-degree rotation is impossible, repair and maintenance is difficult by lifting, and in the case of an anaerobic digester, for preventing leakage between the lifting wire and the manhole cover Device setup is difficult.

Above all, it is impossible to maintain the agitator during the operation of the anaerobic digester due to problems such as biogas leakage.

And, in the prior invention 2, the problem of the prior invention 1 was solved, but the complete rotation was impossible, and the automation of the rotation was pursued, but it was rather cumbersome due to the problem of the installation place (location) of the automation device due to the conditions of the workplace. , there were problems such as frequent failures due to complex mechanical coupling.

Moreover, the problem of the odor of wastewater was still unresolved.

In the present invention, it is possible to provide a stirrer installation GUIDE and BOX device capable of more conveniently operating and changing the direction and height of the submersible propeller agitator.

On the other hand, Republic of Korea Patent Publication No. 0899878 (registration on May 21, 2009), Patent Publication No. 1322601 (registration on October 22, 2013), etc. disclose a technology related to an underwater stirrer, and in addition, a number of prior documents there is.

Republic of Korea Patent Publication No. 0899878 (Registered on May 21, 2009, name: Underwater horizontal stirring device and reciprocating rotation device in the stirring direction) Republic of Korea Patent Publication No. 1322601 (Registered on Oct. 22, 2013, name: underwater stirrer)

Accordingly, the present invention has been researched and developed to supplement and improve the above problems, and in a biogas plant that anaerobically digests livestock manure and organic waste, it is easy to operate an anaerobic digester agitator, change direction, change height, change agitator, etc. A device that easily operates the stirrer inside the anaerobic digestion tank with possible installation GUIDE and BOX device, a device that can rotate the stirring direction inside the anaerobic digestion tank, a device that can easily change the height of the stirrer inside the anaerobic digestion tank, and the agitator AS inside the anaerobic digestion tank easily if necessary A device that can salvage/repair, a device that can safely repair only the necessary parts during normal operation without the need to empty the biogas storage tank only by operating the raw water supply pump and effluent valve of the anaerobic digester. The purpose is to make it possible to expand the application to the place where the agitator installation of the generated storage tank is required.

Therefore, the present invention for achieving the above object is a stainless steel agitator service box and agitator of a structure that can prevent biogas leakage generated in the anaerobic digester and can be opened and closed easily, and is lowered to the level of the normal operation raw water at the bottom of the concrete slab It is composed of a GUIDE of a rectangular pipe structure with a lower rotatable shaft while supporting the .

The present invention for achieving the above object is a facility for producing biogas by anaerobic fermentation of organic waste in an anaerobic digestion tank and processing high-concentration wastewater. A cylindrical rubber plate 330 having a lower fixed plate 320 for making the diaphragm, a gasket 325 positioned between the upper rotating disk 310 and the lower fixed plate 320, and a circular through hole (unnamed) in the center. And iron plate 340, winch having a winch rotary lever 352 and a wire 354, 350, 'C'-shaped body portion 363 and each end of the body portion 363 at right angles to form a connection and a pair of square pipe fixtures 362 consisting of a wing portion 364 having a plurality of fastening holes 365 and a square pipe rotating lever 360 having a handle portion 366 at the other end. Consisting of a stirrer rotating body 300, the upper rotating disc 310 and the lower fixed plate 320 are the fastening part 312 of the upper rotating disc 310 and the fastening part of the upper disc of the lower fixed plate 320 ( (not shown) is coupled through the fastening of the fastening bolt 318 and the fastening nut 319, and the rubber plate 330 and the iron plate 340 are bonded together. The rubber plate 330 is coupled to the lower fixing plate 320 and fastening bolts 328, and the iron plate 340 is the agitator service main box 510, fastening bolts 348, and fastening nuts 349. It is an agitator of an anaerobic digestion tank, characterized in that it is combined.

And, in the present invention, the upper rotating disc 310 has a cylindrical rotating disc sealing protrusion 311 located in the center of the lower surface and a plurality of fastening parts 312 with one end open along the rim, in the center A square pipe insertion hole 314 of a square shape, and a grease supply barrel insertion hole 317 located on one side of the square pipe insertion hole 314 are provided, and the lower fixing plate 320 includes a circular through hole formed in the center and the Anaerobic digestion tank, characterized in that it has a fastening part formed along the rim with the upper rotating disk 310, and the first connecting part 321 and the second connecting part 322 formed in an empty cylindrical shape formed at the same height are integrally coupled is a stirrer.

And, the present invention is a facility for producing biogas and treating wastewater by anaerobically fermenting organic waste in an anaerobic digestion tank, and a stirrer motor 410 having a wire ring 412 to which a wire 354 is connected to the upper part; The roller 422 and the upper end of the square pipe 424 connected to the stirrer rotating body 300 inside, the square pipe support 426 coupled to the lower end of the square pipe 424, the square pipe support 426 An agitator vertical movement guide 420 having a rotation center protrusion 427 located in the center of the lower portion and located at the rear of the agitator motor 410, an agitator impeller 430 located in the front of the agitator motor 410, A body portion having a central projection accommodating hole 447 located in the center and a plurality of ball bearing accommodating holes 442 formed around the rotation center projection accommodating hole 447 and a plurality of fastening holes 446 A disk-shaped lower rotation support plate 441 composed of a peripheral portion, a plurality of ball bearings 443 located in the ball bearing receiving hole 442, and the ball bearing 443 located above the lower rotation support plate 441 by bolting Agitator 400 consisting of a rotation support member 440 consisting of a plurality of fixed ball bearing fixed cover 444; Agitator service main box 510 having a plurality of cicadas rings 512 along the rim of the upper open portion and the lower part is drilled in an 'L' shape for easy repair and a plurality of rings 522 along the rim and agitator service box 500 consisting of agitator service box cover 520 with gasket 524 ; A concrete wall 600 having a water stop plate 630 for preventing water leakage inside and forming a large concrete box surrounding the agitator service box 500; is composed, and the height of the body portion of the lower rotating support plate 441 is lowered It is formed higher than the height of the peripheral portion of the support plate 441, and the fastening bolt 448 and the fastening nut 449 are coupled to the fastening hole 446 of the lower rotating support plate 441 to be fixed to the concrete lower wall 610. It is an agitator of an anaerobic digestion tank, characterized in that it becomes.

According to the present invention, it is possible to change the direction of the stirrer, freely select the stirring position by changing the height of the stirrer, lift the stirrer during AS, and safely repair it by sitting on the top of the stirrer box, and maintain the anaerobic digester even in the normal operating state.

In addition, the present invention is an anaerobic digestion tank to produce biogas by anaerobic fermentation of organic waste and to use a skirt device under the service box by providing a service box for agitator in a facility that processes wastewater, operating anaerobic digestion tank only by manipulating the level of raw water It enables maintenance of the stirrer without stopping the operation, and after lifting the stirrer, it crosses the steel plate and the reinforcement pipe under the stirrer, thereby enabling safe and convenient inspection/maintenance.

In addition, the present invention has the effect of being able to easily change the stirring direction only in the rotation direction of the rectangular GUIDE pipe serving as the stirrer post.

In addition, the present invention has the effect of maintaining perfect airtightness inside and outside the digester by penetrating the lifting wire since the service box, the square guide pipe, and the rotating disk are integrally manufactured.

1 is a schematic diagram as an embodiment of a prior art first invention;
2 is a schematic diagram as an embodiment of the prior art second invention;
3 is a side view showing a reciprocating device in a stirring direction according to an embodiment of the prior art second invention;
4 is a plan view showing a reciprocating device in the agitation direction according to an embodiment of the prior art second invention;
Figure 5 is an overall schematic perspective view of the present invention anaerobic digestion tank agitator
6 is a schematic exploded perspective view of the present invention anaerobic digestion tank agitator
7 is a schematic perspective view of the agitator rotating body of the anaerobic digestion tank agitator according to the present invention;
Figure 8 is a schematic side cross-sectional view of the agitator of the present invention anaerobic digestion tank
9 is a schematic rear view of the agitator of the anaerobic digestion tank according to the present invention;
Figure 10 is a cross-sectional view in the middle of the agitator of the present invention anaerobic digestion tank
11 is a rear view of the middle section of the agitator of the anaerobic digestion tank according to the present invention;
12 is a cross-sectional view in the middle of the rotating support member of the agitator of the anaerobic digestion tank according to the present invention;
13 is a cross-sectional side view of the middle section of the rotating body of the agitator of the anaerobic digestion tank according to the present invention;
14 is a plan view showing the upper rotating plate of the rotating body of the agitator of the anaerobic digestion tank according to the present invention;

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

At this time, the thickness of the lines or the size of components shown in the accompanying drawings for explaining the preferred embodiment of the present invention may be exaggerated or omitted for clarity and convenience of explanation, and according to the reference numerals in the drawings The given terms are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator.

Figure 5 is an overall schematic perspective view of the anaerobic digestion tank stirrer of the present invention, Figure 6 is an overall schematic exploded perspective view of the present invention anaerobic digestion tank stirrer, Figure 7 is a schematic perspective view of the stirrer rotating body of the present invention anaerobic digestion tank stirrer, Figure 8 is this view It is a schematic side cross-sectional view of the stirrer of the anaerobic digestion tank of the present invention, Figure 9 is a schematic rear view of the stirrer of the anaerobic digestion tank of the present invention of the agitator of the present invention, FIG. 12 is a cross-sectional view of the rotating support member of the stirrer of the anaerobic digestion tank according to the present invention, and FIG. It shows the upper rotating plate of the rotating body of the agitator of the present invention anaerobic digestion tank.

As shown in FIGS. 5 to 14, schematically looking at the components of the stirrer 200 of the anaerobic digestion tank according to the present invention, it consists of a stirrer rotating body 300, a stirrer 400, and a stirrer service box 500.

The above components will be described in detail as follows.

12 to 14, the agitator rotating body 300 has a winch 350 located at the upper portion, a square pipe rotating lever 360 located at the center, and an upper rotating disk 310 and a lower portion at the lower portion. The fixed plate 320, the rubber plate 330, and the iron plate 340 are coupled to each other.

The upper rotating disc 310 has a rotating disc sealing protrusion 311 in the center of the lower surface, a plurality of fastening units 312 having one end open along the rim, and a square pipe in the center of a square shape. It has an insertion hole 314, and a grease supply tube insertion hole 317 located at one side of the square pipe insertion hole 314 is provided.

The rotating disk sealing protrusion 311 serves as a seal at the side of the lower fixing plate 320 or a guide at the center.

The grease supply tube insertion hole 318 is provided with a grease supply tube 316 , and the grease supply tube 316 reduces friction of the wire 354 and supplies lubricating oil for protection.

The lower fixing plate 320 includes two disks (upper disk, lower disk) having a circular through-hole (unnamed) formed in the center and a fastening portion (not shown) formed along the rim and a hollow cylindrical first connection portion. 321 and the second connection part 322 are integrally coupled to each other. That is, the lower fixing plate 320 has a circular through hole formed in the center and a fastening portion formed along the edge of the upper rotating disk 310, and the first connecting portion 321 and the second connecting portion 321 and the second having an empty cylindrical shape formed at the same height. The connection part 322 is integrally coupled.

The upper disk of the lower fixing plate 320 has a larger diameter than the lower disk, and the lower disk has a smaller diameter than the upper disk, and when viewed from the side, the upper disk is formed to protrude than the lower disk.

The first connecting portion 321 has a smaller diameter than the upper and lower disks and the second connecting portion 322 and has a hollow cylindrical shape, and the second connecting portion 322 has a larger diameter than the first connecting portion 321 and has an upper portion. The disk and the lower disk are configured in a hollow cylindrical shape with a diameter smaller than that of the lower disk, and the first connecting portion 321 and the second connecting portion 322 have the same height.

A first connection part 321 is positioned inside the second connection part 322 , and an empty space is formed between the first connection part 321 and the second connection part 322 .

A gasket 325 is provided between the upper rotating disc 310 and the lower fixed plate 320 to enhance the leak prevention and sealing function, and the fastening part 312 and the lower fixed plate 320 of the upper rotating disc 310 are provided. ), the fastening portion (not shown) of the upper disc is coupled through the fastening of the fastening bolt 318 and the fastening nut 319 .

The rubber plate 330 is formed of a rubber material, and is coupled to the lower fixing plate 320 with a fastening bolt 328 .

The iron plate 340 is formed of a metal material, and is coupled to the agitator service main box 510 through the fastening of the fastening bolt 348 and the fastening nut 349 .

The rubber plate 330 and the iron plate 340 are bonded to each other to strengthen the leak prevention and sealing function.

The winch 350 is provided with a winch rotary lever 352 and a wire 354, and manually lifts the agitator 400 to a high place or lowers it using this.

The square pipe rotation lever 360 is provided with a pair of square pipe fixtures 362 at one end, and a handle portion 366 at the other end.

The square pipe fixing body 362 is composed of a 'C'-shaped body portion 363 surrounding the square pipe 424 and a wing portion 364 formed to be connected at right angles to each end of the body portion 363, The wing portion 364 has a plurality of fastening holes 365 .

The agitator 400 includes a stirrer motor 410 , a stirrer vertical movement guide 420 , an agitator impeller 430 , and a rotating support member 440 .

The agitator motor 410 has a wire ring 412 to which a wire 354 is connected thereto.

The agitator impeller 430 is positioned in front of the agitator motor 410, and the agitator vertical movement guide 420 is positioned in the rear part.

The agitator vertical movement guide 420 has a roller 422 therein, and the upper end of the square pipe 424 is connected to the stirrer rotating body 300 , and the square pipe coupled to the lower end of the square pipe 424 . It has a pedestal 426 and a rotation center protrusion 427 located in the lower center of the square pipe pedestal 426 .

The agitator motor 410 of the stirrer 400 and the main body portion of the stirrer such as the stirrer impeller 430 move up and down in the square pipe 424 through the driving of the roller 422 .

As shown in FIG. 11 , the rotation support member 440 includes a disk-shaped lower rotation support plate 441 , a plurality of ball bearings 443 , and a plurality of ball bearing fixing covers 444 .

The lower rotation support plate 441 has a body portion having a central projection accommodating hole 447 in the center and a plurality of ball bearing accommodating holes 442 formed around the rotation center projection accommodating hole 447 and a plurality of fastening holes. 446 .

The height of the body portion is formed higher than the height of the peripheral portion.

A fastening bolt 448 and a fastening nut 449 are coupled to the fastening hole 446 of the lower rotation support plate 441 to be coupled and fixed to the concrete lower wall 610 .

The ball bearing 443 is located in the ball bearing receiving hole 442 .

The ball bearing fixing cover 444 is positioned on the ball bearing 443 to prevent the ball bearing 443 from escaping to the outside, and is fixed by bolting to the lower rotation support plate 441 .

The agitator service box 500 is an agitator service main box 510 with a lower opening in a 'L' shape when viewed from the side, and the agitator service main box 510 for repair and safety inspection of the agitator 400 . ) is composed of a stirrer service box cover 520 formed to open.

The agitator service main box 510 is provided with a plurality of cicada rings 512 along the rim of the upper opening portion.

The agitator service box cover 520 is provided with a plurality of rings 522 and gaskets 524 on the rim in order to strongly seal when combined with the agitator service main box 510 .

As shown in FIG. 7 , the concrete wall 600 has a water stop plate 630 therein, and surrounds the agitator service box 500 to form a large concrete box.

It is possible to seal the methane gas and toxic gas through the water stop plate 630 and the concrete wall 600, and prevent leakage.

Next, an installation method of the present invention will be described.

In this way, the agitator service box is manufactured in the form of an embodiment of the present invention made of stainless steel material, but is manufactured to go down 800mm below the upper slab or upper steel cover of the digester with a margin.

In the service box cover, a gasket is attached to the inside of the box in contact with the box, so that when the cover is attached and fastened with a cicada ring, it is sealed to prevent the biogas or odor inside from leaking out.

And, as shown in the lifting device and rotating structure of the stirrer>, the stirrer GUIDE square pipe, winch, lever, cover, etc. are manufactured to be integrated, and the wire for lifting the stirrer passes through the pipe filled with sealing grease and is connected to the stirrer body do.

Agitator GUIDE The base plate is fixed to the lower part of the square pipe so that the center ball can be rotated, and the square pipe equipped with a rotating shaft and bearing is fastened to the upper part so that the square pipe can be rotated.

Assemble the lower box, gasket, and the rotating pedestal disc in one piece on the lifting device rotating plate cover, and assemble the rotating plate with radial grooves on the upper part. When the agitator installation direction is set, fix the rotating pedestal disk and radial grooved rotating plate with bolts and nuts.

When lifting the stirrer, cross the steel plate for support between the upper part of the box gasket and the lower part of the stirrer to prevent the stirrer from falling.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

When maintenance of the agitator is necessary, the following can be done.

1. When the agitator malfunctions or maintenance is required, raise the raw water level of the digester to 900 mm from the ceiling during normal operation by 200 mm, and operate the raw water supply pump so that the lower part of the service box is submerged in the raw water, and close the drain valve.

2. Using a winch, lift up to the service box as much as possible.

3. Release the cicada hook and open the service box.

4. Cross the steel plate and reinforcement pipe between the top of the service box and the bottom of the agitator to reinforce the agitator so that it does not fall.

5. Repair the impeller, bearing, motor, etc. of the agitator.

6. Re-install in reverse order. After re-installation, re-inject sealing grease into the through-pipe through which the wire passes to prevent biogas or odor from leaking.

When resetting the direction of the agitator, if it is necessary to change the direction of agitation to improve agitation performance or anaerobic digestion efficiency, loosen the bolt nut fastened on the top of the rotating disk to set it in the desired direction, and then tighten the bolt nut so that it does not rotate arbitrarily .

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of the present invention, and such modifications should not be individually understood from the technical spirit or perspective of the present invention.

200: agitator of anaerobic digestion tank
300: agitator rotating body
310: upper rotating disk
311: rotating disk sealing protrusion
312: fastening part
314: square pipe insertion hole
316: grease container
317: grease supply tank insertion hole
318: fastening bolt
319: fastening nut
320: lower fixing plate
321: first coupling part
322: second coupling part
325: gasket
328: fastening bolt
330: rubber plate
340: iron plate
348: fastening bolt
349: fastening nut
350: winch
352: winch rotary lever
354: wire
360: square pipe rotation lever
362: square pipe fixture
363: body part
364: wing
365: fastener
366: handle part
400: agitator
410: agitator motor
412: wire loop
420: agitator vertical movement guide
422: roller
424: square pipe
426: square pipe pedestal
427: turning the center of rotation
430: agitator impeller
440: rotation support member
441: lower rotating support plate
442: ball bearing receiving hole
443: ball bearing
444: ball bearing fixed cover
446: fastener
447: rotation center process receiving hole
448: fastening bolt
449: fastening nut
500: agitator service box
510: agitator service main box
512: cicada ring
514: agitator service box inner space
520: agitator service box cover
522: ring
524: gasket
600: concrete wall
610: concrete lower wall
630: index plate

Claims (3)

As a facility for producing biogas and processing high-concentration wastewater by anaerobic fermentation of organic waste by anaerobic digestion in an anaerobic digestion tank, the upper rotating disk 310 for rotating the agitator and the lower fixed plate 320 for fixing the agitator service box to the service box, the upper rotation A gasket 325 positioned between the disk 310 and the lower fixing plate 320, a cylindrical rubber plate 330 and an iron plate 340 having a circular through-hole (unnamed) in the center, and a winch rotation lever 352 ) and a winch 350 having a wire 354, a 'C'-shaped body portion 363 and each end of the body portion 363 connected at right angles and provided with a plurality of fastening holes 365 It consists of a stirrer rotating body 300 consisting of a pair of rectangular pipe fixing bodies 362 composed of wing parts 364 and a rectangular pipe rotating lever 360 having a handle 366 at the other end, The upper rotating disc 310 and the lower fixed plate 320 are fastened to the fastening part 312 of the upper rotating disc 310 and the fastening part (not shown) of the upper disc of the lower fixed plate 320 is fastened with a fastening bolt 318. The nut 319 is coupled through the fastening, and the rubber plate 330 and the iron plate 340 are bonded together. The rubber plate 330 is coupled to the lower fixing plate 320 and fastening bolts 328, and the iron plate 340 is the agitator service main box 510, fastening bolts 348, and fastening nuts 349. At the same time as being coupled, the upper rotating disc 310 has a cylindrical rotating disc sealing protrusion 311 located in the center of the lower surface and a plurality of fastening parts 312 with one end open along the rim, a square shape in the center of the square pipe insertion hole 314 and the grease supply barrel insertion hole 317 located at one side of the square pipe insertion hole 314, and the lower fixing plate 320 has a circular through hole formed in the center and the upper rotation The agitator of an anaerobic digestion tank, characterized in that it has a fastening portion formed along the edge with the disk 310, and the first connecting portion 321 and the second connecting portion 322 formed in an empty cylindrical shape formed at the same height are integrally coupled.
delete As a facility for producing biogas and treating wastewater by anaerobically fermenting organic waste in an anaerobic digestion tank, the agitator motor 410 having a wire ring 412 to which a wire 354 is connected to the upper part 410, and a roller 422 therein ) and a square pipe 424 whose upper end is connected to the agitator rotating body 300, a square pipe support 426 coupled to the lower end of the square pipe 424, and the square pipe support 426, located in the lower center The agitator vertical movement guide 420 having a rotation center protrusion 427 and positioned at the rear of the agitator motor 410, the agitator impeller 430 positioned at the front of the agitator motor 410, rotation located in the center A circle composed of a main body having a central projection accommodating hole 447 and a plurality of ball bearing accommodating holes 442 formed around the rotational central projection accommodating hole 447 and a peripheral portion having a plurality of fastening holes 446 . A plate-shaped lower rotation support plate 441, a plurality of ball bearings 443 positioned in the ball bearing receiving hole 442, a plurality of ball bearings positioned on the ball bearing 443 and fixed by bolting to the lower rotation support plate 441 Agitator 400 composed of a rotating support member 440 composed of a fixed cover 444;
Agitator service main box 510 having a plurality of cicadas rings 512 along the rim of the upper open portion and the lower part is drilled in an 'L' shape for easy repair and a plurality of rings 522 along the rim and agitator service box 500 comprising agitator service box cover 520 with gasket 524 ;
A concrete wall 600 having a water stop plate 630 for preventing water leakage inside and forming a concrete box surrounding the agitator service box 500; consists of,
The height of the body portion of the lower rotation support plate 441 is formed higher than the height of the peripheral portion of the lower rotation support plate 441, and a fastening bolt 448 and a fastening nut (446) in the fastening hole 446 of the lower rotation support plate 441 ( 449) is coupled to the agitator of the anaerobic digestion tank, characterized in that the coupling fixed to the concrete lower wall (610).

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