KR102235520B1 - Rotary screen cutter device and sludge mass reduction system using the same - Google Patents

Abstract

The present invention relates to a rotary screen cutter apparatus and a system for reducing a sludge solid using the same for pulverizing and discharging a solid contained in sludge when treating sewage or wastewater. The rotary screen cutter apparatus according to an embodiment of the present invention is the rotary screen cutter apparatus for pulverizing and discharging a solid contained in sludge. The rotary screen cutter apparatus comprises: a cutter casing in which a supply port to which sludge is supplied and an outlet port for discharging the sludge supplied to the supply port are formed; a screen installed between the supply port and the discharge port to filter out the solid mixed in the sludge; a crushing cutter rotating in close contact with the screen and crushing the solid caught on the screen; a cutter driving motor rotating the crushing cutter; a solid chamber positioned below the cutter casing to receive the solid that have not been crushed by the crushing cutter and to have a discharge port for discharging the received solid to the outside; and a solid matter processor forcibly pressing the solid accommodated in the solid chamber in a direction in which the discharge port is located and then discharging the solid to the outside through the discharge port. Therefore, the solid contained in the sludge can be easily treated.

Description

Rotary screen cutter device and sludge mass reduction system using the same}

The present invention relates to a rotary screen cutter device for pulverizing and discharging solids contained in sludge when treating sewage or wastewater, and a sludge mass reduction system using the same.

In general, sewage or wastewater is purified and discharged again.Since sewage or sewage contains various types of impurities, when only impurities are separated from sewage or sewage, they are bulky and are not separated, so they are not treated as such. Because there is no choice but to do, there is a problem that environmental pollution occurs.

To solve this problem, conventionally, after sedimenting the sludge in a sedimentation tank, the solids contained in the sludge are separated from the sorting unit, the separated solids are taken out through a vehicle, and the filtered sludge is sent to the concentration unit to condense, and then the digestion tank is applied to anaerobic microorganisms. By recirculating and discharging the sludge in the form of decomposing and discharging, the occurrence of environmental pollution could be prevented.

However, conventionally, when the sludge is provided to the concentrator, foreign substances contained in the sludge are filtered out by a sorting machine, so not only equipment for filtering solids from all sludge is required, but also the solids filtered by the sorting machine are carried out through a vehicle. Therefore, there is a problem in that equipment cost increases due to securing the installation place of the sorter, maintenance cost increases due to transportation of the vehicle, and odor occurs because sludge is exposed to the outside.

On the other hand, the solids selected by the sorting machine are large in size and are crushed to reduce the volume. When the solids are crushed, a crusher is used, and the conventional crusher is disclosed as a "poor crusher" in Korean Utility Model Publication No. 20-0342466. There is a bar.

The conventional impurity crusher is a impurity crusher in which a crushing shaft is installed in a central portion of a housing formed of an inlet pipe and an outlet pipe; Allowing the crushing shaft to be installed in a detachable oblique inclined structure, and connecting a power motor equipped with a stress sensor to the upper crushing shaft; It was configured to include a filter collection unit in a predetermined space to collect residual impurities on one side of the inlet pipe adjacent to the pulverization shaft.

The conventional impurity crusher with such a configuration ensures that when an operating pressure exceeding the set range occurs on the grinding shaft, it is effectively detected by the stress sensor, and the driving relationship of the motor is automatically forward/reversely converted, thereby preventing the occurrence of overload of the crusher. By preventing the occurrence in advance, and by preventing the occurrence of such an overload, it was possible to prevent unnecessary device failure and damage.

In addition, the manure space of residual impurities that have not passed through the crusher is secured, and the impurities collected in the manure space are easily discharged to the outside of the pipeline of the housing, thereby preventing unnecessary clogging of the pipeline or the cause of failure of the crusher. It was possible to provide a debris shredder so that it could be solved at the source.

However, in the conventional sewage treatment contaminant crusher, in order to remove contaminants accumulated in the manure space, since the operation of the contaminant crusher must be stopped due to the outflow of fluid, there is a problem in that the crushing efficiency of the contaminants decreases.

In addition, even if the load increases due to an increase in the amount of impurities to be crushed, since the same conditions are operated, not only the crushability according to the load decreases, but also there is a problem in that the motor is heated and burned.

In addition, when abrasion of the cutter occurs, the crushability decreases because the cutter does not come into close contact with the screen, and there is a problem that the replacement cost increases because the entire cutter must be replaced.

In addition, since the removal of uncrushed impurities must be performed manually, there is a problem in that the removal of impurities is cumbersome.

The present invention was conceived to solve the above problems, and the problem to be solved by the present invention is a rotary screen cutter device because the passage opening and closing valve blocks the moving passage and removes the solids when removing the solids accumulated in the solids chamber. The crushing efficiency of the solids can be improved by treating the solids while the unit is running, and the load prevention controller controls the amount of sludge supplied according to the occurrence of the load, thereby reducing the load and improving the crushability and driving the cutter at the same time. The purpose of providing a rotary screen cutter device capable of preventing burnout of the motor and eliminating the hassle of removing the accumulated solids by automatically periodically or aperiodically removing the solids accumulated in the solids chamber by a solids remover. do.

In addition, the crushing cutter is in close contact with the screen by the close pressing unit, so that even if abrasion of the crushing cutter occurs, not only can the crushing cutter be in close contact with the screen to improve crushability, but also a plurality of edges constitute the cutting edge in the form of steps. Thus, even if the edge in contact with the screen is worn, the new edge can contact the screen to improve the crushability of the solid material, and the cutter blade in the cutter body is joined by the hinge joint to reduce the replacement cost due to wear and reduce the cost of the shredding cutter. An object of the present invention is to provide a rotary screen cutter device capable of improving crushability by a cutter blade in close contact with a screen even when shaking occurs.

In addition, the rotary screen cutter device of the present invention is installed between the immersion tank and the concentrator to filter solids and immediately pulverize them without having to carry them out by means of transportation, and treat them together with the sludge, thereby reducing the treatment cost and reducing the sludge to the outside. It is an object of the present invention to provide a sludge type reduction system using a rotor screen cutter device that not only prevents exposure to cause odors, but also minimizes installation locations and greatly reduces equipment costs.

A rotary screen cutter device according to an embodiment of the present invention according to an embodiment of the present invention for achieving the above object is a rotary screen cutter device for pulverizing and discharging solids contained in sludge, wherein the rotary screen cutter device is A cutter casing having a supply port for supplying sludge and an outlet for discharging the sludge supplied to the supply port, a screen installed between the supply port and the discharge port to filter the solids mixed in the sludge, and rotates in close contact with the screen A crushing cutter for crushing the solids stuck in the crushing cutter, a cutter driving motor that rotates the crushing cutter, and being located under the cutter casing to accommodate the solids that were not crushed by the crushing cutter, and a discharge port for discharging the received solids to the outside is formed. A solids chamber, and a solids treatment device for forcibly pressing the solids accommodated in the solids chamber in a direction in which the carrying out port is located and carrying them out through the carrying out port.

The crushing cutter cuts the sludge by the cutting edge located in the next layer even if the cutting edge of the portion in close contact with the screen is worn, so that a step-shaped edge is formed on a surface facing the direction in which the crushing cutter rotates so as to improve cutting performance. It may include a cutting edge portion having.

The crushing cutter may include a close pressurizing unit for contacting the crushing cutter by hydraulic pressure in a direction in which the screen is positioned.

It may include a passage opening and closing valve for opening and closing a moving passage through which the cutter casing and the solids chamber are connected so as to block the fluid passing through the cutter casing from being discharged to the discharge port when the solids are conveyed to the discharge port by the solids treatment machine. have.

The solids treatment unit includes a pressurizing head positioned inside the solids chamber to pressurize and discharge the solids accommodated in the solids chamber in the direction in which the discharge port is located, and a pressurizing cylinder forcibly pressing and moving the pressurizing head. I can.

A pressure gauge installed at the supply port or the discharge port to measure the pressure of the fluid passing through, and a sludge transfer pump that predicts a load acting on the cutter driving motor based on the pressure measured by the pressure gauge and supplies sludge to the supply port. It may include a load protection controller to control.

An opening/closing cover installed at the delivery port for opening and closing the delivery port, and a guide for guiding the sliding movement of the opening/closing cover in the solids chamber so that the opening/closing cover is closed close to the delivery port or opened apart from the delivery port. A bar, and a cover support spring that closes the opening and closing cover from the outside of the solids chamber to the direction in which the discharge port is located so that the solids are compressed and dehydrated when the solids are discharged from the solids chamber to the discharge port. can do.

A hinge portion rotatably coupling the opening/closing cover in the direction in which the solids are carried out of the guide bar, and a solid material pressed between the opening/closing cover and the solids treatment machine while the opening/closing cover is moved to open the discharge port. It may include a cover control bar that is formed to a length shorter than the length of the guide bar so as to shake the lower portion of the solid material chamber to support the opening and closing cover.

The sludge type reduction system using a rotor screen cutter device according to an embodiment of the present invention includes a settling tank for sedimenting sludge, a concentrating unit for lowering the moisture content of the sludge precipitated in the settling tank, and the settling tank installed between the settling tank and the concentrating unit. It includes the rotor screen cutter device for crushing the solids contained in the sludge deposited in the condensing unit.

According to the present invention, the passage opening/closing valve opens and closes the moving passage through which the solid matter passes between the solid matter chamber and the cutter casing, so that the solid matter accumulated in the solid matter chamber can be easily removed even while the rotary screen cutter device is operating, as well as the solid matter chamber. By automatically removing the solids accumulated in the solids remover, the hassle of removing the solids can be eliminated.

In addition, the crushing efficiency can be improved by measuring the load due to the solids treatment of the cutter casing through a pressure gauge and controlling the sludge transfer pump according to this load to adjust the amount of sludge supplied to the cutter casing. Accordingly, it is possible to prevent the occurrence of damage to the rotary screen cutter device.

In addition, since the crushing cutter is in close contact with the screen by the close pressing unit to perform cutting, it is possible to improve the crushability by preventing the occurrence of gaps due to abrasion of the crushing cutter, and to prevent foreign substances from entering the gap. have.

In addition, the cutter blade is installed in the cutter body to seesaw movement by the hinge coupling part, so that the cutter blade is in close contact with the screen and rotates even when the crushing cutter shakes, improving crushability and at the same time, it is possible to replace only the cutter blade in the cutter body. The replacement cost can be reduced.

In addition, even if a plurality of edges are formed in the form of steps on the cutter blade and wear occurs on the edge contacting the screen, the new edge contacts the screen and maintains the crushability, thereby improving the crushability of the solid material.

In addition, since the sludge type reduction system using the rotor screen cutter device crushes the solids contained in the sludge moving from the sedimentation tank to the thickener by a rotary screen cutter device and treats them with the sludge, the transportation cost of filtering the solids out and carrying them out is reduced. It is possible to reduce the amount and prevent the occurrence of odor due to exposing the sludge to the outside, and it is also possible to significantly reduce the facility cost by minimizing the installation site.

1 is a block diagram schematically showing a system for reducing sludge materials using a rotary screen cutter device according to an embodiment of the present invention.
2 is a perspective view showing a rotary screen cutter device according to an embodiment of the present invention.
3 is a side cross-sectional view showing a rotary screen cutter device according to an embodiment of the present invention.
4 is an enlarged side cross-sectional view of a portion in which the crushing cutter is installed in the rotary screen cutter device according to the sealing example of the present invention.
5 is a bottom view showing a screen and a crushing cutter constituting a rotary screen cutter device according to an embodiment of the present invention.
6 is a diagram illustrating various types of processing holes of a screen constituting a rotary screen cutter device according to an embodiment of the present invention.
7 is a view showing a crushing cutter constituting the rotary screen cutter device according to an embodiment of the present invention, (a) is a plan view, (b) is a side cross-sectional view.
8 is a cross-sectional view taken along line AA of FIG. 7 (a), showing a state in which the cutter blade is coupled to the blade coupling portion.
9 is a side view showing various modifications of the crushing cutter constituting the rotary screen cutter device according to an embodiment of the present invention.
10 is a cross-sectional plan view of a solids chamber constituting a rotary screen cutter device according to an embodiment of the present invention.
11 is a side cross-sectional view of a solids chamber constituting a rotary screen cutter device according to an embodiment of the present invention, (a) shows a state in which solids are taken out by a solids treatment machine, and (b) is a solid material by rotating the opening and closing cover. It represents the state of removing.

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

2 and 3, the rotary screen cutter device 100 according to the embodiment of the present invention may include a cutter casing 110.

The cutter casing 110 may be formed in the form of a box or a tube through which fluid passes, and the cutter casing 110 has a supply port 111 through which sludge mixed with solids is supplied from the sedimentation tank 200 and pulverized solids Together with the sludge discharge port 113 may be formed.

The cutter casing 110 has an outlet 113 formed on one side and a supply port 111 on the other side, and the inner space of the cutter casing 110 is a supply space 117a communicating with the supply port 111 ) And a discharge space (117b) communicating with the discharge port (113) may be partitioned by the partition wall (117).

In addition, a communication hole 119 through which the sludge introduced into the supply space 117a can move to the discharge space 117b may be formed in the partition wall 117.

In the embodiment, the inner space of the cutter casing 110 is divided into upper and lower parts, so that the supply space 117a is located under the cutter casing 110 and forms a discharge space 117b above the supply space 117a. , The partition wall 117 that divides the supply space 117a and the discharge space 117b is a form that divides the supply space 117a and the discharge space 117b into the front and rear sides or the front and rear sides to which the sludge is transferred, but is inclined diagonally. It may be configured to be divided into a shape.

A moving passage 115 through which solids move to the solids chamber 150 to be described below may be formed at a lower portion of the cutter casing 110 in communication with the supply space 117a.

In the specification, the sludge may be an impurity in the form of a mixture of solids, and the impurity may be supplied to the supply port 111 in a state contained in wastewater.

3 to 6, the rotary screen cutter device 100 according to the embodiment of the present invention may include a screen 120.

This screen 120 can filter the solids contained in the sludge.

The screen 120 can be installed in the communication hole 119 of the cutter casing 110, and the screen 120 is installed on the partition wall 117 on fastening members such as bolts and nuts so that it can be replaced in the communication hole 119 Can be.

The screen 120 may be formed in a disk shape, and a plurality of processing holes 121 may be formed in the screen 120 so as to pass only solids having a predetermined size.

A plurality of processing holes 121 may be formed regularly or irregularly on the screen 120, and a plurality of processing holes 121 having different sizes may be formed.

The circumference of the processing hole 121 has a sharp edge, and can be crushed into a size capable of passing through the processing hole 121 by an interaction with the crushing cutter 130 to be described below and scissors. .

A through hole 120a through which the motor shaft 126 is inserted may be formed in the center of the screen 120.

As shown in FIGS. 3 to 5 and 6 to 8, the rotary screen cutter device 100 according to the embodiment of the present invention may include a crushing cutter 130.

The crushing cutter 130 is in close contact with the screen 120 to rotate and cut the solid material caught in the processing hole 121.

The crushing cutter 130 is coupled to the motor shaft 126 of the cutter driving motor 125 to be described below in the center and can be rotated by the cutter driving motor 125, and the crushing cutter 130 is a motor shaft 126 ), a plurality of radially centered cutter blades 135 may be installed.

Meanwhile, the crushing cutter 130 may be installed in close contact with the outer surface where the supply space 117a is located around the screen 120.

The crushing cutter 130 may include a cutter body 131 and a cutter blade 135.

The cutter body 131 may have a shaft hole through which the motor shaft 126 is inserted and coupled in the center, and the cutter body 131 includes a plurality of blade coupling portions 133 at radially equal intervals around the shaft hole. It may be formed to protrude.

One blade coupling portion 133 has a length extending from the screen 120 to the end of the processing hole 121 located at the outermost side of the screen 120 so that the solid material caught in the processing hole 121 formed in the screen 120 can be cut. It can be formed to have.

Each blade coupling portion 133 may be formed with a blade groove 134 to which the cutter blade 135 is fitted, and the blade groove 134 is formed in a portion of the blade coupling portion 133 facing the screen 120. Can be formed.

The cutter blade 135 may be inserted into and coupled to the blade groove 134, and the cutter blade 135 may be substantially close to the screen 120, or in close contact with the screen 120, and the processing hole ( 121) can be cut.

The cutter blade 135 is formed to have a length corresponding to the blade coupling portion 133 and may be coupled to the blade coupling portion 133, and the cutter blade 135 is close to or in close contact with the screen 120 to remove solids. A cutting edge portion 136 in which an edge of an end where a surface facing the direction in which the crushing cutter 130 is rotated and a surface facing the screen 120 meet to be cut may be formed to be sharp like a blade.

At this time, the edge facing the cutter blade 135 in the processing hole 121 of the screen 120 is also formed in the shape of a sharp blade, so that the crushability of the solid material is improved by interacting with the cutter blade 135 like scissors. I can make it.

On the other hand, when the edge facing the screen 120 is worn, the cutting edge part 136 cuts the solid material while the new edge is in contact with or close to the screen 120 so that a plurality of edges are formed in the form of steps. Can be formed.

As shown in (a) to (d) of FIG. 8, the cutting edge portion 136 has a shape in which a plurality of edges protrude in the form of steps toward the rotation direction of the crushing cutter 130, for example, the screen 120 ) From the outside to the direction in which the screen 120 is located, the crushing cutter 130 is formed in the form of an inclined staircase that retreats backward with respect to the rotational direction, or toward the opposite direction of the rotation of the crushing cutter 130. The shape of a staircase, for example, may be formed in the form of an inclined staircase by protruding forward from the outside of the screen 121 in a direction in which the screen 121 is located, with respect to the direction in which the crushing cutter 130 rotates.

In addition, the cutting edge portion 136 is formed not only on the surface facing the direction in which the crushing cutter 130 rotates, but also on the surface in the opposite direction, so that the crushing cutter 139 (even if it rotates in both sides) can cut solids. Can be formed.

The cutter blade 135 is inserted into and coupled to the blade groove 134 so that the cutting edge portion 136 is positioned outside the blade coupling portion 133, and the cutter blade 135 can be replaced in the blade coupling portion 133 It can be coupled by fastening members such as bolts and nuts so as to be.

On the other hand, the cutting edge portion 136 is formed of a material having a lower hardness than the screen 120 so that even if abrasion occurs due to mutual friction, the cutting edge portion 136 that can be replaced than the screen 120 is first worn. I can.

The crushing cutter 130 may include a hinge coupling part 137.

The hinge coupling portion 137 is a cutter blade 135 coupled to the blade coupling portion 133 so that a space between the cutter blade 135 and the screen 120 does not occur and is in close contact with the screen 120 It can be combined to enable seesaw movement in the coupling portion 133.

The hinge coupling portion 137 is a blade coupling portion 133 so that the cutter blade 135 moves to the center of the cutter body 131 or to the outside of the cutter body 133 in the blade coupling portion 133. ), the cutter blade 135, which rotates in close contact with the screen 120, rotates in close contact with the screen 120, and the cutter blade 135 is in close contact with the screen 120 and is crushed. Can improve.

The hinge coupling portion 137 is coupled in a form in which the cutter blade 135 and the central portion where the blade coupling portion 133 overlap with each other in a state inserted into the blade groove 134 are fastened by a bolt and a nut, thereby connecting the bolt and the nut. The cutter blade 135 can be coupled to a seesaw motion in the blade coupling portion 133 as the center (see (b) of FIG. 7 ).

At this time, the portion of the cutter blade 135 inserted into the blade groove 134 is formed in an arc shape, so that when the cutter blade 135 performs a seesaw movement around the hinge coupling part 137, a restriction occurs in the seesaw movement. Can be prevented.

3 and 4, the rotary screen cutter device 100 according to the embodiment of the present invention may include a close pressing unit 140.

The close pressing part 140 may improve cutting force by bringing the crushing cutter 130 into close contact with the screen 120.

The close pressing unit 140 may push the drive shaft on which the crushing cutter 130 is installed in the direction in which the screen 120 is located from the crushing cutter 130 or may make the crushing cutter 130 in close contact with the screen 120.

Here, when abrasion occurs due to rotation of the crushing cutter 130 in the screen 120, a separation space is generated between the crushing cutter 130 and the screen 120, and when the separation space occurs, sludge and impurities As it gets caught between the spaced spaces, the crushability decreases.

Accordingly, the close contact pressure unit 140 prevents the occurrence of a gap between the two by attaching the crushing cutter 130 to the screen 120, thereby preventing insertion of a solid material and improving crushability.

The close pressurization unit 140 may supply the working fluid through the motor shaft 126 to bring the crushing cutter 130 into close contact with the screen 120 according to the hydraulic pressure generated, and the close pressurization unit 140 is the cutter shaft unit ( 141), a hydraulic flow passage 143, a supply passage 123, a hydraulic chamber cap 145, a pressure plate 147, and a supply chamber portion 125.

The cutter shaft part 141 extends from the end of the motor shaft 126 and is inserted through the through hole 120a of the screen 120, and the crushing cutter 130 is coupled to move the crushing cutter 130 to the drive shaft 121 Can be rotated together.

The cutter shaft part 141 may be coupled to the end of the motor shaft 126 or may be configured to extend the motor shaft 126 by the length of the cutter shaft part 141, and the cutter shaft part 141 has a crushing cutter 130 ) Is combined in the form of a key joint to prevent slip of the crushing cutter 130 from occurring in the cutter shaft portion 141.

The hydraulic flow path 143 may be formed in the cutter shaft part 141, and the hydraulic flow path 143 is crushed at the circumference of the cutter shaft part 141 corresponding to the through hole 120a in the cutter shaft part 141. ) May be formed to penetrate to the outer end of the cutter shaft portion 141 is located.

A plurality of inlets are formed around the cutter shaft portion 161 in the portion of the hydraulic passage 143 where the screen 120 is located, so that the working fluid may be supplied to the hydraulic passage 143 through the plurality of inlets.

Here, the working fluid is a fluid different from the fluid sucked and discharged by the pump 100, and the working fluid may be an oil in which compression deformation is minimized.

At the end of the cutter shaft part 141, a hydraulic chamber cap 145 in which a hydraulic chamber 146 for receiving the working fluid supplied to the hydraulic flow path 143 is formed may be installed, and in the hydraulic chamber cap 145, a crushing cutter ( The surface facing the 130 may be formed in a form in which the hydraulic chamber 146 is opened.

The hydraulic chamber cap 145 may be fixedly installed at the end of the cutter shaft part 141, and a pressure plate 147 is attached to the hydraulic chamber 146 in the open portion of the hydraulic chamber cap 145. It may be installed to be sealed, and the pressing plate 147 is pushed out of the hydraulic chamber 146 by the pressure of the working fluid acting on the hydraulic chamber 146 and presses the crushing cutter 130, thereby screening the crushing cutter 130 It can be brought into close contact with (120).

The pressure plate 147 is inserted into the cutter shaft 141 so as to slide on the cutter shaft 141 and inserted into the hydraulic chamber 146 according to the hydraulic pressure acting on the hydraulic chamber 146, or in the hydraulic chamber 146. It is possible to adjust the pressing force that protrudes and presses the crushing cutter 130 on the screen 120.

At this time, an airtight ring formed of an elastic body having airtightness for preventing leakage of the working fluid supplied to the hydraulic chamber 146 may be installed around the pressure plate 147.

The supply chamber part 123 may provide the working fluid from the outside to the hydraulic flow path 143 of the cutter shaft part 141 through the screen 120.

The supply chamber part 123 is formed inside the supply chamber 124 to which the working fluid is supplied by surrounding the circumference of the cutter shaft part 141 passing through the through hole 120a. A supply passage 122 for supplying fluid from the outer periphery to the through hole 120a in which the cutter shaft part 141 is located may be formed.

The supply passage 122 may be installed to communicate with the supply chamber 124 in which the through hole 120a is located on the outer circumference of the screen 120 through a portion of the screen 120 in which the processing hole 141 is not formed. have.

In this case, a supply hose for supplying the working fluid from the outside may be connected to an end of the supply passage 122 located outside the screen 120.

Meanwhile, an O-ring or a mechanical seal may be installed at a portion of the supply chamber part 145 through which the cutter shaft part 161 penetrates to prevent the working fluid supplied to the supply chamber 123 from leaking to the outside.

When the working fluid is supplied from the outside to the supply passage 122 formed on the screen 120 through the supply hose, the close pressing unit 140 configured as described above moves the working fluid to the supply chamber 124, and the cutter shaft part 141 It is supplied to the hydraulic flow path 143 formed in ).

The fluid supplied to the hydraulic flow path 143 is filled in the hydraulic chamber 146 formed in the hydraulic chamber cap 145 through the lower portion of the cutter shaft part 141 to generate pressure, and when the pressure in the hydraulic chamber 146 increases, As the pressure plate 147 is pushed out of the hydraulic chamber 145, the crushing cutter 130 is in close contact with the screen 120.

2 and 3, the rotary screen cutter apparatus 100 according to the embodiment of the present invention may include a cutter driving motor 125.

The cutter driving motor 125 may rotate the crushing cutter 130, and the cutter driving motor 125 may be an engine that consumes fuel or may be implemented as an electric motor driven by electricity.

The cutter driving motor 125 is located outside the cutter casing 110 and is installed in a form in which only the motor shaft 126 of the cutter driving motor 125 is coupled to the crushing cutter 130, so that fluid including impurities is installed in the cutter driving motor. It can be prevented from being damaged by leaking to (125).

2, 3, and 10 and 11, the rotary screen cutter device 100 according to an embodiment of the present invention may include a solids chamber 150.

This solids chamber 150 is located under the cutter casing 110 and is not crushed by the crushing cutter 130 through the moving passage 115 formed in the cutter casing 110, or is relatively heavy, making water treatment difficult. Can hold solids.

The solids chamber 150 may be implemented in the form of a box or a cylinder under the cutter casing 110, and the end of the solids chamber 150 is for discharging the solids accommodated in the solids chamber 150 to the outside. A carrying port 151 may be formed.

In the embodiment, the solids chamber 150 is formed in the form of a cylinder having an empty inside, and a connection part connected to the moving passage 115 of the cutter casing 110 may be formed around the solids chamber 150.

On the other hand, in the moving passage 115 through which the solids move, the moving passage 115 is opened so that the solids in the supply space 117a move to the solids chamber 150 through the moving passage 115 or the moving passage 115 A passage opening/closing valve 181 may be installed to block and block the fluid flowing into the cutter casing 110 from moving to the solids chamber 150.

The passage opening and closing valve 181 may be implemented as a knife valve that opens and closes the moving passage 115 by sliding the plate.

3, 10, and 11, the rotary screen cutter apparatus 100 according to an embodiment of the present invention may include a solids treatment machine.

The solids treatment machine may clean the solids chamber 150 by pushing the solids contained in the solids chamber 150 from the solids chamber 150 to the discharge port 151.

In the solids treatment machine, a pressure head 159 is located inside the solids chamber 150, and a pressure cylinder 157 is installed outside the solids chamber 150 so that the pressure cylinder 157 forcibly half the pressure head 159. The solids chamber 150 may be cleaned by moving in the direction in which the outlet 151 is located and pushing the solids located inside the solids chamber 150 to the discharge port 151.

At this time, the pressure cylinder 157 that moves the pressure head 159 may be implemented as a pneumatic or hydraulic cylinder, and a pressure head 159 is installed on the rod of the pressure cylinder 157 to appear and exit from the pressure cylinder 157 Through this, the pressure head 159 may be moved from the discharge port 151 to the inside of the solids chamber 150 in the direction in which the discharge port 151 is located.

The solids treatment device may include an opening/closing cover 160.

The opening/closing cover 160 may be installed at the delivery opening 151 to selectively open and close the delivery opening 151.

The opening/closing cover 160 is in close contact with the outside of the discharge port 151 and is separated from the discharge port 151 or overlaps the discharge port 151 by moving from the solids chamber 150 to open and close the discharge port 151. I can.

In the embodiment, the opening/closing cover 160 is spaced apart from and opened to the outside of the carrying out port 151 in a state in close contact with the carrying out port 151, or in the carrying out port 151 in a state spaced apart from the outside of the carrying out port 151. It is configured to open and close the carry-out port 151 by sliding so as to be in close contact, but the opening/closing cover 160 is rotatably coupled at the carrying port 151 and rotates at the carrying port 151 to open the carrying port 151, or It may be configured to close the carrying out port 151.

On the other hand, an O-ring is installed in the delivery port 151 to seal the airtight between the opening and closing cover 160 and the delivery opening 151, and the opening and closing cover 160 is in close contact with the delivery opening 151 at the center of the O-ring. It may be formed in a hollow shape to perform airtightness while being elastically deformed.

The opening and closing cover 160 may include a guide bar 161.

The guide bar 161 may guide the sliding movement of the opening/closing cover 160 so that the opening/closing cover 160 is in close contact with or spaced apart from the carrying out opening 151 in the solids chamber 150.

The guide bar 161 is coupled to the opening and closing cover 160 at one end so as to be parallel with the axis on which the pressure head 159 moves in the pressure cylinder 157, and the other end is coupled so as to be slidably moved in the solids chamber 150 to open and close. The cover 160 may guide the movement of the opening/closing cover 160 by moving along the opening/closing cover 160 when the cover 160 is spaced apart from or closely contacted from the carrying out port 151.

The guide bar 161 may be coupled to the solids chamber 150 in a state parallel to each other at the central portions of both sides of the opening and closing cover 160.

Meanwhile, the opening/closing cover 160 may include a cover support spring 163.

The cover support spring 163 may support the opening/closing cover 160 so that the opening/closing cover 160 is in close contact with the carrying out port 151 by an elastic force.

One end of the cover support spring 163 is supported by the solids chamber 150 and the other end is installed on the guide bar 161 in a form supported by the end of the guide bar 161 to support the guide bar 161 by elastic force. In a form, the opening/closing cover 160 may be moved to be in close contact by an elastic force in the direction in which the discharge port 151 is located.

Of course, the cover support spring 163 is not compressed by the internal pressure of the solids chamber 150 so that the opening and closing cover 160 cannot open the discharge port 151 by the pressure of the fluid acting inside the solids chamber 150. It can have elasticity.

The opening/closing cover 160 may include a hinge portion, a cover control bar 165 and a hinge portion.

The hinge portion and the cover control bar 165 may rotate the opening/closing cover 160 in the guide bar 161 to remove the pressed solid material between the opening/closing cover 160 and the solids treatment machine.

Meanwhile, the hinge portion may be connected so that the opening/closing cover 160 is rotatable in the guide bar 161 around a horizontal axis connecting the guide bars 161 located on both sides.

That is, the hinge portion may connect the opening/closing cover 160 to the guide bar 161 so that the guide bar 161 located on both sides of the opening/closing cover 160 rotates in the direction in which the opening/closing cover 160 moves.

In addition, the cover control bar 165 may be connected to the upper portion of the opening and closing cover 160 in parallel with the guide bar 161, and the cover control bar 165 may be formed to have a length shorter than the length of the guide bar 161. have.

One end of the cover control bar 165 may be rotatably coupled at an upper end of the opening/closing cover 160, and the other end of the cover control bar 165 may be coupled to be slidably movable in the solids chamber 150.

When the solids are accumulated in the solids chamber 150 and removed, the pressing head 159 moves in the direction in which the discharge port 151 is located, and between the pressing head 159 and the opening and closing cover 160 The solid material located in is pressed and compressed, and when continuously pressurized, the opening/closing cover 160 is spaced outward from the carrying out port 151, and the opening/closing cover 160 is opened and closed because it is coupled to the guide bar 161 As the cover support spring 163 supporting the guide bar 161 is compressed by a pressing force applied to the cover 160, the carrying out port 151 is opened (see FIG. 6(a)).

At this time, depending on the amount of solids accumulated between the pressure head 159 and the opening and closing cover 160, a lot of solids are accumulated between the pressing head 159 and the opening and closing cover 160, so that the pressure head 159 and the opening and closing cover While the solid material is compressed between 160, it is carried out to the discharge port 151 in a state sandwiched between the two, and the opening/closing cover 160 is moved as far as possible by the guide bar 161 from the discharge port 151. Previously, the end of the cover control bar 165 having a relatively short length is caught in the solids chamber 150 and cannot be moved any more.

In a state where the end of the cover control bar 165 is caught in the solids chamber 150, when the opening/closing cover 160 is moved further outward by the pressure head 159, the cover control bar 165 cannot move any more and the opening/closing cover Since the upper part of the 160 is pulled toward the discharge port 151, the opening/closing cover 160 rotates around the hinge (see FIG. 6(b)).

When the opening/closing cover 160 rotates, the compressed solid material between the pressing head 159 and the opening/closing cover 160 falls to the floor and is removed between the pressing head 159 and the opening/closing cover 160.

At this time, at the top of the opening and closing cover 160, when the opening and closing cover 160 is rotated by the cover control bar 165, a release protrusion that presses the solid material located between the pressing head 159 and the opening and closing cover 160 is removed. May be formed to protrude toward the discharge port 151.

The opening and closing cover 160 may include a locking means 183.

The locking means 183 may prevent the opening/closing cover 160 from opening the discharge port 151 due to an increase in abnormal pressure inside the solids chamber 150.

The locking means 183 may be implemented as a solenoid in which the plunger is electrically protruding, and the locking means 183 is installed in the solids chamber 150 so that the protruding plunger is coupled to the opening/closing cover 160 so that the opening/closing cover 160 The locking of the opening and closing cover 160 may be released when the plunger is inserted.

The locking means 183 may include a removal controller 180 for controlling the locking means 183 so that the solids remover 155 can operate in conjunction with the solids remover 155.

The removal controller 180 can be operated to unlock the locking means 183 when the solids removal device 155 is operated, and the removal controller 180 is a detection sensor or a detection switch that detects the operation of the pressure head 159 It can also be implemented as

On the other hand, the removal controller 180 measures the load of the solids remover 155 and, when the load of the solids remover 155 acts more than a preset load, the locking means 183 to unlock the locking means 183. ) Can also be controlled.

For example, when the solids remover 155 operates and the pressure head 159 moves in the direction in which the discharge port 151 is located, the solids are pressed inside, and when the solids are maximally compressed, the locking means 183 unlocks the lock. In the form of carrying out the compressed solid material to the outside through the discharge port 151 to minimize the volume, the volume of the solid material may be minimized to be carried out.

And, the removal controller 180 operates the solids remover 155 at each preset period including a timer, or accumulates when solids are filled in the solids chamber 150 by a preset amount of solids accumulated including an accumulation detection sensor. The solids remover 155 may be operated so that the detection sensor detects and removes the solids.

In addition, the removal controller 180 controls the passage opening and closing valve 181 to close the moving passage 115 when the solid object container operates to treat the solid object, thereby closing the cutter casing 110 according to the opening of the opening and closing cover 160. ), it is possible to prevent the fluid moving through the discharge port 151 from being discharged.

As shown in FIG. 3, the rotary screen cutter device 100 according to the embodiment of the present invention may include a pressure gauge 175 and a load prevention controller 170.

The pressure gauge 175 may measure the pressure of the fluid supplied to the supply port 111 of the cutter casing 110 or the pressure of the fluid discharged from the discharge port 113.

The pressure gauge 175 may be installed at the supply port 111 or the discharge port 113, and the pressure gauge 175 may provide the measured pressure of the fluid to the load prevention controller 170.

The load prevention controller 170 may include a load control unit 171 that controls based on the pressure provided through the pressure gauge 175 and a cutting control unit 173 that controls the cutting load of solid materials.

The load control unit 171 predicts the amount of load due to solids processed by the cutter casing 110 through the pressure measured by the pressure gauge 175 and controls the sludge transfer pump 210 that supplies sludge to the supply port 111. I can.

For example, when the pressure measured by the pressure gauge 175 rises within a preset range than the previous pressure, the load control unit 171 predicts that the load amount increases due to the large amount of solids processed in the cutter casing 110, and the sludge transfer pump It is possible to control the sludge transfer pump 210 to reduce the load by reducing the amount of sludge supplied from the 210 to the supply port 111.

In addition, when the pressure measured by the pressure gauge 175 gradually increases and becomes higher than the preset pressure, the load control unit 171 determines that clogging has occurred, and the sludge is supplied from the sludge transfer pump 210 to the supply port 111. It is possible to block the operation of the cutter driving motor 125 at the same time.

At this time, the load prevention controller 170 includes a notification unit notifying that a problem has occurred, such as a lamp or a speaker, and when the operation of the cutter driving motor 125 is stopped according to an increase in pressure, the cutter casing 110 is blocked, etc. It can be notified to the outside through the notification unit that a problem has occurred.

The cutting control unit 173 may include a motor detection sensor that senses the load of the cutter driving motor 125.

The motor detection sensor can measure the current value or the resistance value of the occurrence of the load of the cutter driving motor 125, and when the load is generated according to the measured current value or resistance value, the crushing cutter 130 and the screen 120 ) It is possible to control the cutter driving motor 125 to rotate the crushing cutter 130 in reverse by determining that a solid material is stuck between them.

On the other hand, the cutting control unit 173 controls the cutter driving motor 125 so that the crushing cutter 130 rotates forward again when it is determined that the load has been generated by the current value or the resistance value measured by the motor detection sensor even if it rotates in reverse. The cutting control unit 173 is a cutter driving motor 125 so that the crushing cutter 130 repeats the forward and reverse rotation several times until the solids between the crushing cutter 130 and the screen 120 are removed. By controlling the crushing cutter 130 and the screen 120, it is possible to remove the solid matter sandwiched between.

It will be described that the operation and effect between the respective components described above are applied to the sludge type reduction system 500 using the rotary screen cutter device 100 according to the embodiment of the present invention.

As shown in Fig. 1, the sludge type reduction system 500 using the rotor screen 120 and the cutter device 100 according to an embodiment of the present invention includes a settling tank 200, a concentrating unit 300, and a digester 400. It may include.

The sedimentation tank 200 may initially introduce sewage or wastewater, and the sedimentation tank 200 precipitates the sludge mixed with sewage or wastewater, and the sewage or wastewater from which the sludge has been removed is discharged as it is, or water treated by a water treatment facility and then discharged. Can be.

The sedimentation tank 200 can filter sludge from sewage or wastewater by confining sewage or wastewater for a predetermined time to precipitate sludge, and the filtered sludge is sent to the concentration unit 300 to reduce the moisture content contained in the sludge. I can.

At this time, the sludge of the sedimentation tank 200 may be provided to the concentrating unit 300 by the sludge transfer pump 210, and the rotor screen 120 and the cutter device 100 according to the embodiment of the present invention are the sedimentation tank 200 It is installed between the concentration unit 300 and the crushed solids contained in the sludge provided from the sedimentation tank 200 may be provided to the concentration unit 300.

At this time, the sludge mixed with the crushed solids may be stored in the sludge storage tank 250, and the sludge stored in the sludge storage tank 250 may be provided to the concentration unit 300 through a transfer pump.

Here, conventionally, a sludge removal facility was installed between the sedimentation tank 200 and the concentrator 300 to remove the solids contained in the sludge, but the sludge removal facility removes the solids while passing the sludge through a conveyor and carries them to the vehicle. Then, the wastewater from which the solids have been removed is stored in the sludge storage tank 250 and then sent back to the thickening tank 330.

However, since the sludge removal facility requires a lot of maintenance cost according to the transportation cost of the vehicle and the treatment cost of solids, and the installation site of the sludge removal facility must be secured due to the enlargement of the equipment, the facility cost increases.

However, in the present invention, since the solids contained in the sludge precipitated in the sedimentation tank 200 are crushed by the rotor screen 120 and the cutter device 100 according to the embodiment and sent to the thickening tank 330, the facility maintenance cost and installation place are reduced. By minimizing it, the equipment cost can be greatly reduced.

Meanwhile, in the sedimentation tank 200, the sludge transfer pump 210 is supplied to the supply port 111 of the rotor screen 120 and the cutter device 100, and the sludge supplied to the supply port 111 is supplied to the supply space 117a. As it flows into, the solid matter of a certain size is caught on the screen 120.

The solids caught on the screen 120 are cut by the crushing cutter 130 rotating by the cutter driving motor 125 and pass through the screen 120, and the solids crushed and passing through the screen 120 are mixed with sludge and discharged. It moves to the space 117b and is transferred to the concentration unit 300 through the outlet 113.

And, when the crushing cutter 130 rotates, the crushing cutter 130 is in close contact with the screen 120 by the close pressing unit 135, so that even if abrasion of the crushing cutter 130 occurs, the crushing cutter 130 is 120), it is possible to improve the crushability of the solid.

At this time, the close pressing part 135 is supplied with the working fluid from the outside through the supply passage 122 of the screen 120, and the working fluid supplied to the supply passage 122 moves to the supply chamber part 123, It is supplied from the supply chamber part 123 to the hydraulic flow path 143 formed in the cutter shaft part 141.

The working fluid supplied to the hydraulic flow path 143 moves to the hydraulic chamber 146 of the hydraulic chamber cap 145 to generate hydraulic pressure, and the hydraulic pressure plate 147 is applied to the hydraulic chamber 146 by hydraulic pressure. While being pushed from, the crushing cutter 130 is in close contact with the screen 120, thereby improving crushability.

And, when the cutting edge portion 136 of the cutter blade 135 wears as the crushing cutter 130 rotates, the edge formed in a stepped shape is sequentially connected to the screen 120, and the crushability is To prevent falling, the cutter blade 135 is a seesaw motion in the blade coupling part 133 by the hinge coupling part 137, so even if the crushing cutter 130 is shaken by vibration, the cutter blade on the screen 120 (135) is in close contact and by preventing the occurrence of a gap, crushability can be improved.

On the other hand, when a solid material is caught in the processing hole 121 of the screen 120, if a load occurs because the crushing cutter 130 cannot rotate, the load detection sensor detects it, and the load detection sensor When transmitted to the cutting control unit 173, the cutting control unit 173 rotates the crushing cutter 130 in the reverse direction of the direction in which it was rotated, and a load occurs because the crushing cutter 130 cannot rotate even in a state in which the crushing cutter 130 rotates in the reverse direction, The cutter driving motor 125 is controlled to repeatedly rotate the crushing cutter 130 in the forward and reverse directions a predetermined number of times until the load is reduced.

Thereafter, when the stuck solid is removed, the crushing cutter 130 continuously rotates in the forward or reverse direction to crush the solid, and if the solid is not crushed, the solid is passed through the moving passage 115 of the cutter casing 110. It moves to the solids chamber 150 located at the bottom and accumulates.

On the other hand, when the solids accumulated in the solids chamber 150 arrives at a preset period or is accumulated more than a preset accumulation amount of the solids, the solids remover 155 is operated.

The solids remover 155 moves the pressure cylinder 157 in the direction in which the pressure head 159 is located, and the pressure head 159 moves in the direction in which the discharge port 151 is located, The solid material located between the opening/closing cover 160 and the pressure head 159 installed in the carrying out port 151 is compressed, and when the solid material is compressed, the removal controller 180 is attached to the pressure head 159 or the pressure cylinder 157 The locking means 183 is released by sensing the applied load.

At the same time, the removal controller 180 blocks the moving passage 115 by operating the passage opening and closing valve 181 together, so that the fluid passing through the inside of the cutter casing 110 passes through the solids chamber 150 and the discharge port 151 To block the discharge.

In addition, when the locking means 183 is released, the opening/closing cover 160 is pushed out from the discharge port 151 and opened by the pressure head 159 moving toward the discharge port 151, and the solid material is pushed to the pressure head 159 and It is sandwiched between the opening and closing cover 160 in a compressed state and carried out through the carrying out port 151.

At this time, when the opening/closing cover 160 is separated from the discharge port 151, the guide bar 161 also moves, and the cover support spring 163 installed on the guide bar 161 is compressed, The elastic force is accumulated.

In addition, when the cover control bar 165 shorter than the length of the guide bar 161 is caught in the solids chamber 150 as the opening and closing cover 160 continues to move to the outside of the discharge port 151, the upper end of the opening and closing cover 160 With the guide bar 161 moving outward while being fixed, the opening/closing cover 160 is located at the center of the guide bar 161 located on both sides, and the upper part of the opening/closing cover 160 is located at the lower part of the discharge port 151 Rotates in the direction indicated.

When the opening/closing cover 160 is rotated, the compressed solids of the opening/closing cover 160 and the pressing head 159 are pressed by the release protrusion and are removed from the bottom.

When the solid material is removed between the opening and closing cover 160 and the pressure head 159, the opening and closing cover 160 is in the direction in which the guide bar 161 is positioned by the elastic force of the cover support spring 163. The opening and closing cover 160 seals the discharge port 151 by moving to, and the pressure cylinder 157 moves the pressure head 159 back to the initial position, and when the pressure head 159 is initially positioned, the locking means 183 ) This locks the opening and closing cover 160 to prevent the opening of the opening and closing cover 160.

When the pressure cylinder 157 returns to the initial position, the removal controller 180 controls the passage opening and closing valve 181 to open the moving passage 115 again to transfer the solids in the solids chamber 150 to the solids chamber 150. Can provide.

Meanwhile, the rotary screen cutter device 100 measures the pressure at the pressure gauge 175 installed at the supply port 111 or the discharge port 113, and is provided to the load control unit 171 of the load prevention controller 170, and the load control unit 171 ) Means that when the pressure is increased based on the measured pressure, it is determined that the load is generated due to an increase in the amount of solids processed in the cutter casing 110, and the sludge is transferred from the sedimentation tank 200 to the supply port 111. The sludge transfer pump 210 is controlled to reduce the amount of sludge supplied to the supply port 111 by controlling the pump 210.

In addition, the load prevention controller 170 determines that clogging has occurred in the cutter casing 110 when the pressure measured by the pressure gauge 175 exceeds a preset pressure, and the load control unit 171 determines that the sludge transfer pump 210 ) And the operation of the cutter driving motor 125 is stopped, and an external action is required through an alarm unit, so that damage due to the occurrence of a load on the rotary screen cutter device 100 can be prevented.

The sludge mixed with the crushed solids discharged to the discharge port 113 is stored in the sludge storage tank 250 and then provided to the concentration unit 300 through a transfer pump.

The concentrator 300 may include a concentrator 310 and a concentrating tank 330, and the concentrator 310 reduces the water content in the sludge in a form of dewatering the sludge, and in the thickening tank 330, the dehydrated sludge is collected through a collector. Collected, and the sludge collected by the collector is provided to the digester 400 through a transfer pump.

The sludge provided to the digester 400 is heated to a preset temperature to supply anaerobic or aerobic microorganisms to precipitate and decompose organic substances, dehydrate the dehydrated sludge through a dehydrator, and transport the dehydrated sludge to a designated place. have.

Therefore, the rotary screen cutter device 100 according to an embodiment of the present invention has the advantage of being easy to treat solids by periodically or aperiodically removing the solids accumulated in the solids chamber 150 by the solids remover 155. .

In addition, a passage opening/closing valve 181 is installed between the solids chamber 150 and the cutter casing 110 so that solids can be processed even in a state in which the rotary screen cutter device 100 is operated.

In addition, since the crushing cutter 130 is in close contact with the screen 120 by the close pressing unit 140 to perform cutting, it is possible to improve crushability by preventing a gap from occurring due to abrasion of the crushing cutter 130. In addition, it is possible to prevent the inflow of solids into the gap.

In addition, the cutter blade 135 is installed to seesaw movement by the hinge coupling portion 137 in the cutter body 131, so that the cutter blade 135 is in close contact with the screen 120 to rotate even when the crushing cutter 130 shakes. Therefore, it is possible to improve the crushability and at the same time replace only the cutter blade 135 in the cutter body 131, thereby reducing the replacement cost.

In addition, even if a plurality of edges are formed in the form of steps on the cutter blade 135 and abrasion occurs on the edge contacting the screen 120, the new edge contacts the screen and maintains the crushability, thereby improving the crushability of the solid. I can.

In addition, since the solids remover 155 compresses the solids, it is easy to treat the solids by minimizing the volume of the solids, and as the opening and closing cover 160 is opened, it is rotated and compressed by the compression head and the opening and closing cover 160. Since the solids are removed, there is an advantage that the solids removal treatment is easy.

In addition, by controlling the amount of sludge supplied by the load prevention controller 170 in response to the load acting on the rotary screen cutter device 100, energy loss and damage to the rotary screen cutter device 100 due to the occurrence of the load are prevented. Can be minimized.

In addition, the sludge type reduction system 500 using the rotary screen cutter device 100 according to an embodiment of the present invention is installed between the sedimentation tank 200 and the thickening tank 330 to crush the solids contained in the sludge without separating them. It is possible to significantly reduce the cost of equipment because of the treatment, and not only the transport cost of transporting and treating solids can be reduced, but also it can prevent the sludge from being exposed to the outside, thereby preventing the occurrence of odors caused by the sludge. .

In the above, the embodiments of the present invention have been described, but the scope of the present invention is not limited thereto, and the embodiments of the present invention are easily changed by those of ordinary skill in the technical field to which the present invention belongs, and are recognized as equivalent. It includes all changes and modifications to the extent that it is made.

100: rotary screen cutter device 110: cutter casing
111: supply port 113: outlet
115: mobile passage 117: bulkhead
117a: supply space 117b: discharge space
119: communication hole 120: screen
120a: through hole 121: treatment hole
122: supply passage 123: supply chamber part
124: supply chamber 125: cutter drive motor
126: motor shaft 130: crushing cutter
131: cutter body 133: blade coupling portion
134: blade groove 135: cutter blade
136: cutting edge portion 137: hinge coupling portion
140: close pressing part 141: cutter shaft part
143: hydraulic flow path 145: hydraulic chamber cap
146: hydraulic chamber 147: pressure plate
150: solids chamber 151: discharge port
155: solids remover 157: pressurized cylinder
159: pressure head 160: opening and closing cover
161: guide bar 163: cover support spring
165: cover control bar 170: load prevention controller
171: load control unit 173: cutting control unit
175: pressure gauge 180: removal controller
181: passage opening and closing valve 183: locking means
200: sedimentation tank 210: sludge transfer pump
300: concentrator 310: concentrator
330: thickening tank 400: digester
500: sludge mass reduction system

Claims (9)

In the rotary screen cutter device for pulverizing and discharging solids contained in sludge,
The rotary screen cutter device
A cutter casing having a supply port through which sludge is supplied and an outlet through which the sludge supplied to the supply port is discharged,
A screen installed between the supply port and the discharge port to filter solids mixed in the sludge,
A crushing cutter that rotates in close contact with the screen and crushes the solids stuck on the screen,
A cutter driving motor that rotates the crushing cutter,
A solids chamber located under the cutter casing to receive solids that cannot be crushed by the crushing cutter and having an outlet for discharging the received solids to the outside,
A solids treatment device for forcibly pressing the solids accommodated in the solids chamber in a direction in which the discharge port is located and carrying it out through the discharge port, and
A rotary screen cutter device, characterized in that it comprises a close pressing unit for pressing the crushing cutter in close contact by hydraulic pressure in the direction in which the screen is located. The method of claim 1,
The shredding cutter
Even if the cutting edge of the portion in close contact with the screen is worn, the sludge is cut by the cutting edge located in the next layer to improve the cutting performance. Rotary screen cutter device comprising a. delete The method of claim 1,
It comprises a passage opening and closing valve for opening and closing a moving passage through which the cutter casing and the solids chamber are connected so as to block the fluid passing through the cutter casing from being discharged to the discharge port when the solids are conveyed to the discharge port by the solids processor. Rotary screen cutter device characterized by. The method of claim 1,
The solids treatment unit
A pressure head positioned inside the solids chamber to pressurize and discharge the solids received in the solids chamber in the direction in which the discharge port is located, and
Rotary screen cutter device, characterized in that it comprises a pressure cylinder forcibly pressing and moving the pressure head. The method of claim 1,
A pressure gauge installed at the supply port or the discharge port to measure the pressure of the fluid passing through, and
And a load prevention controller configured to predict a load acting on the cutter driving motor based on the pressure measured by the pressure gauge and control a sludge transfer pump that supplies sludge to the supply port. The method of claim 1,
An opening/closing cover installed at the carry-out port to open and close the carry-out port,
A guide bar for guiding the sliding movement of the opening/closing cover in the solids chamber so as to seal the opening/closing cover close to the delivery port or to open it apart from the delivery opening, and
And a cover support spring for intimate contact with the opening and closing cover in the direction in which the discharge port is located from the outside of the solids chamber by an elastic force so that the solid material is compressed and dehydrated when the solid material is discharged from the solid material chamber to the discharge port. Rotary screen cutter device. The method of claim 7,
A hinge portion rotatably coupled to the opening and closing cover in the guide bar in a direction in which solids are carried out, and
In a state in which the opening/closing cover is moved to open the discharge port, the opening/closing cover is formed to have a length shorter than the length of the guide bar so as to remove the pressed solid material downwardly between the opening/closing cover and the solids treatment machine. Rotary screen cutter device comprising a cover control bar for supporting. A system for reducing sludge type material using the rotor screen cutter device according to claim 1,
The rotor screen cutter device is installed between a sedimentation tank for sedimenting sludge, and a concentrator for lowering the moisture content of the sludge precipitated in the sedimentation tank, and crushes the solids contained in the sludge deposited in the sedimentation tank and provides it to the concentrator. Sludge type reduction system using a rotor screen cutter device.

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