KR102474013B1 - Waste treatment apparatus and waste treatment method using the same - Google Patents

Abstract

A waste treatment device can include: a pulverizing device for pulverizing waste; a first sterilization device that is connected to the pulverizing device and transports the waste pulverized by the pulverizing device; a second sterilization device to which the waste pulverized from the first sterilization device is transferred; and a discharge device for discharging the waste sterilized in the second sterilization device.

Description

Waste treatment device and waste treatment method using the same {WASTE TREATMENT APPARATUS AND WASTE TREATMENT METHOD USING THE SAME}

The present invention relates to a waste disposal device for safely processing medical waste and the like.

Medical wastes such as syringes, cotton wool, bandages, gauze, and gloves generated after medical activities such as surgery or treatment in hospitals may be contaminated with blood, body fluids, excretions, and the like. These infectious wastes must be safely disposed of separately from general wastes to prevent the spread of pathogens or viruses.

In the case of treating infectious waste by incineration, since the waste must be transported from the hospital to the area where the incineration facility is located, there is a possibility of infection spreading during transportation, and the waste treatment cost is expensive due to long-distance transportation. In addition, environmental pollution may also be a problem because exhaust gas containing harmful components is discharged by incineration.

Therefore, there has been a need for a waste treatment device and a waste treatment method capable of more safely and rapidly treating medical waste at low cost.

An object of the present invention is to provide a waste treatment apparatus capable of crushing and sterilizing infectious waste and a waste treatment method using the same.

An object of the present invention is to provide a waste treatment device capable of safely and quickly treating infectious waste at a low cost and a waste treatment method using the same.

An object of the present invention is to provide a miniaturized waste treatment device and a waste treatment method using the waste treatment device that reduces environmental pollutant emissions so that the waste treatment device can be installed adjacent to a waste generation source.

Waste treatment apparatus according to the spirit of the present invention, a crushing device for crushing waste, a first sterilization device connected to the crushing device and transporting waste pulverized by the crushing device, waste pulverized from the first sterilization device is transported It may include; a second sterilization device, and a discharge device for discharging waste sterilized in the second sterilization device.

The first sterilization device and the second sterilization device are each formed with a double wall, a sterilization tank provided with a heating layer between the double walls, a transfer screw for transferring pulverized waste into the sterilization tank, and a sterilization tank. It may include a conveying screw for conveying waste in a direction opposite to the conveying direction of the conveying screw, and an agitation screw for stirring the waste conveyed into the sterilization tank.

The sterilization tank may include a heating medium oil filled in the heating layer and a heater for heating the heating medium oil.

The first sterilization device and the second sterilization device may each include an inlet provided at an upper side of the upstream end of the transfer screw and an outlet provided at a lower side of the downstream end of the transfer screw.

The first sterilization device and the second sterilization device may be inclined so that the outlet is higher than the inlet.

The waste disposal device may further include an exhaust device connected to the grinding device, the first sterilization device, and the second sterilization device.

The exhaust device includes a high-temperature catalytic device that deodorizes the air sucked from the grinding device, the first sterilization device, and the second sterilization device, and a sterilization filter that discharges the air discharged from the high-temperature catalytic device through the sterilization filter. device may be included.

The waste treatment device may further include an input unit provided to supply waste to the crushing unit, and a steam spray unit configured to spray steam to the input unit.

The waste treatment device may further include a weighing device for measuring and transmitting the weight of the waste supplied to the input device and the weight of the waste discharged to the discharge device.

The first sterilization device and the second sterilization device measure the pressure inside the sterilization tank and the pressure inside the heating layer separately, and the temperature inside the sterilization tank is measured to overheat. It may further include a temperature controller to prevent.

A waste treatment method according to the spirit of the present invention includes the steps of crushing waste in a crushing device, transferring the waste crushed in the crushing device to a second sterilization device via a first sterilization device, and transferring the waste to the second sterilization device. The step of sterilizing the waste, the step of transferring the pulverized waste in the grinding device to the first sterilization device while the step of sterilizing in the second sterilization device, and the step of sterilizing in the second sterilization device are completed. Discharging the sterilized waste of the second sterilization device, and when the discharge of the sterilized waste from the second sterilization device is completed, transferring the pulverized waste transferred to the first sterilization device to the second sterilization device steps may be included.

A waste treatment apparatus and a waste treatment method using the same according to an embodiment of the present invention can treat infectious waste safely and quickly because infectious waste is pulverized, sterilized, and discharged.

A waste treatment device and a waste treatment method using the same according to an embodiment of the present invention are miniaturized with less emission of environmental pollutants and can be installed and treated adjacent to a waste generation source.

1 is a perspective view of a waste treatment device according to an embodiment of the present invention;
Figure 2 is a front view of the waste treatment device of Figure 1;
Figure 3 is a plan view of the waste treatment device of Figure 1;
4 is a perspective view of a sterilization device of the waste treatment device of FIG. 1;
Figure 5 is a cross-sectional view of the sterilization device of Figure 4;
6 is a plan view of a transfer screw and a transfer screw of the sterilization device of FIG. 4;
7 is a flowchart illustrating a waste treatment method according to an embodiment of the present invention.

The embodiments described in this specification and the configurations shown in the drawings are only one preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings in this specification at the time of filing of the present application.

The same reference numerals or numerals presented in each drawing in this specification indicate parts or components that perform substantially the same function. It may be exaggerated for a clear description of the shape and size of elements in the drawings.

Terms used in this specification are used to describe the embodiments, and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features The existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

Terms including ordinal numbers such as "first" and "second" used herein may be used to describe various components, but the components are not limited by the terms, and the terms are one It is used only for the purpose of distinguishing a component from other components. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

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

1 is a perspective view of a waste treatment device according to an embodiment of the present invention, FIG. 2 is a front view of the waste treatment device of FIG. 1 , and FIG. 3 is a plan view of the waste treatment device of FIG. 1 .

1 to 3, the waste treatment device 1 according to an embodiment of the present invention includes an input device 110, a crushing device 100, a first sterilization device 200, and a second sterilization device 300. ), an exhaust device 400 and an exhaust device.

The input device 110 may be provided above the grinding device 100 to supply waste to the grinding device 100 . Waste transported by the mobile cart 10 may be automatically raised and rotated by the lift 120 and put into the input device 110 .

The lift 120 may be designed to be easily transported and not jammed during up and down motion. The weight can be designed to be 200 kg. The size of the mobile bogie 10 may be designed to be 900 mm wide, 750 mm long, and 750 mm high. The lift 120 may include a winch structure. The volume of the input device 110 may be designed to be larger than the volume of the mobile cart 10 . The injection device cover 111 may be provided to seal the injection device 110 .

The waste treatment device 1 may include a weight measuring device (not shown) that measures the weight of waste input into the input device 110 and transmits the weight of the waste to the central processing device. The weight measuring device may be provided in the lift 120 or in the input device 110 .

The waste treatment device 1 may include a steam injection device (not shown). The steam injection device may be provided to inject steam into the input device 110 when the grinding device 100 starts a grinding operation. A steam injection nozzle (not shown) may be disposed above the input device 110 .

The crushing device 100 may crush the waste supplied from the input device 110 . The crushing device 100 may include a crushing blade for crushing waste to a size of 20 mm in width and 20 mm in length or less. The crushing device may include a 4-shaft crushing blade.

The waste treatment device 1 may include at least one sterilization device 200 or 300 . The waste treatment device 1 according to an embodiment of the present invention is connected to the grinding device 100 and the first sterilization device 200 to which the waste pulverized in the grinding device is transported and the pulverized from the first sterilization device 200 It may include a second sterilization device 300 through which waste is transported. The sterilization devices 200 and 300 may sterilize waste at a high temperature of 165 degrees Celsius or higher using a heat tube sterilization method.

The waste treatment device 1 operates the crushing device 100 while the second sterilization device 300 performs a sterilization process and supplies waste to the first sterilization device 200 to shorten the overall waste treatment time, efficiently and efficiently Waste can be safely disposed of. A waste treatment device according to another embodiment of the present invention may include three or more sterilization devices 200 and 300 as needed.

The waste treatment device 1 may include an exhaust device capable of purifying and discharging exhaust gas generated from the input device 110 , the crushing device 100 , and the sterilization devices 200 and 300 . The exhaust device may include a first exhaust duct 530 , a second exhaust duct 540 , a high-temperature catalyst device 510 , a sterilization filter device 520 , and an exhaust port 550 .

The first exhaust duct 530 is connected to the grinding device 100, the first sterilization device 200, and the second sterilization device 300, and is connected to the grinding device 100, the first sterilization device 200, and the second sterilization device 200. The air sucked from the sterilization device 300 may be transferred to the high-temperature catalyst device 510 . The first exhaust duct 530 may be connected to the top or side of the input device 110 connected to the grinding device 100 .

A damper (not shown) is installed at the connection part of the first exhaust duct 530 of the input device 110 or the crushing device 100, the first sterilization device 200, and the second sterilization device 300, so that waste is crushed and transported. In the case of sterilization, the damper can be opened to exhaust the air, and in the case of sterilization, the damper can be closed to prevent heat loss.

The high-temperature catalyst device 510 may oxidize and decompose the air sucked from the grinding device 100, the first sterilization device 200, and the second sterilization device 300 by bringing them into contact with a catalyst having a high temperature of 200 degrees Celsius or more. As the catalyst, noble metal catalysts such as platinum, copper, silver, barium, and nickel may be used.

Air from the high-temperature catalyst device 510 may be moved to the sterilizing filter device 520 through the second exhaust duct 540 . The sterilization filter device 520 mixes the air from the high-temperature catalyst device 510 with the air sucked into the waste treatment device 1, passes through the sterilization filter, and passes through the exhaust port 550 to the waste treatment device 1. can be discharged to the outside.

The sterilization filter device 520 may remove harmful substances and odors contained in the air emitted from the high-temperature catalyst device 510 by using an activated carbon filter or the like, and may be provided to facilitate replacement and maintenance of the filter.

The waste treatment device 1 may include a discharge device 400 for discharging waste sterilized in the sterilization devices 200 and 300 . The discharge device 400 may include a weight measuring device (not shown) that measures the weight of discharged waste and transmits the weight to the central processing unit. The sterilized waste discharged from the discharge device 400 may be transported in a mobile cart.

4 is a perspective view of a sterilization device of the waste treatment device of FIG. 1 , FIG. 5 is a cross-sectional view of the sterilization device of FIG. 4 , and FIG. 6 is a plan view of a conveying screw and a conveying screw of the sterilizing device of FIG. 4 .

Referring to FIGS. 4 to 6 , the sterilization devices 200 and 300 may include a sterilization tank 210 , a transfer screw 220 , a transfer screw 230 , and a stirring screw 240 . The conveying screw 220, the conveying screw 230, and the stirring screw 240 may be disposed inside the sterilization tank 210, and the upper part of the sterilization tank 210 is detachable sterilization tank to facilitate inspection and maintenance. A cover 213 may be disposed.

Sterilization tank 210 may be formed of a sealed double wall structure. A heating layer may be provided in the space between the double walls by filling the heat medium oil 211 and inserting a heater 212 for heating the heat medium oil 211 . The sterilization tank 210 may have an efficient heat transfer effect by maintaining a uniform temperature inside the tank by the heating layer.

At the bottom of the sterilization tank 210, there is a transfer screw 220 for transporting the pulverized waste into the tank and a transport screw 230 for transporting the waste in the transport direction (A) and the opposite direction (B) of the transport screw in the sterilization tank. ) can be placed. The conveying screw 220 may be formed to have a longer length than the conveying screw 230 .

An agitation screw 240 for agitating the waste transferred into the sterilization tank 210 may be disposed above the transfer screw 220 and the transfer screw 230 . The agitating screw 240 may include a plurality of agitating blades 241 disposed at intervals from each other along the circumferential direction. The stirring blades 241 may scoop up the wastes moved by the conveying screw 220 and the conveying screw 230 so that the wastes are evenly mixed in the sterilization tank 210 .

An inlet 250 into which wastes to be supplied to the sterilization devices 200 and 300 are input may be provided at an upper side of an upstream end of the transfer screw 220 . An outlet 260 may be provided at the lower side of the downstream end of the transfer screw 220 to allow waste to be discharged from the sterilization devices 200 and 300 . A cover (not shown) capable of sealing the inlet 250 and the outlet 260 may be provided at the inlet 250 and the outlet 260 of the sterilization devices 200 and 300, respectively.

The sterilization devices 200 and 300 may be inclined so that the position of the inlet 250 is higher than the position of the outlet 260 . The first sterilization device 200 may be inclined so that the inlet 250 of the first sterilization device 200 is disposed below the outlet of the grinding device 100 . The second sterilization device 300 may be inclined so that the inlet 250 of the second sterilization device 300 is disposed below the outlet 260 of the first sterilization device 200 .

When the supply of waste to the sterilization devices 200 and 300 is completed, covers (not shown) of the inlet 250 and the outlet 260 are closed, and the sterilization process may be started. The conveying screw 220, the conveying screw 230, and the stirring screw 240 continue to rotate even after the supply of the waste into the sterilization tank 210 is completed, so that the waste transferred to the sterilization tank 210 is effectively and evenly heated inside the tank. It can be exposed and sterilized. The conveying screw 220, the conveying screw 230, and the stirring screw 240 may be provided so as not to deform even at a high temperature.

The sterilization devices 200 and 300 may include a pressure measuring device (not shown) capable of measuring the pressure inside the sterilization tank 210 and transmitting the measured pressure to a central control device. The sterilization devices 200 and 300 may include a pressure measuring device (not shown) provided to separately measure the pressure inside the sterilization tank 210 and the pressure inside the heating layer.

The sterilization apparatuses 200 and 300 may include a temperature controller (not shown) for preventing overheating of the sterilization tank 210 by measuring the internal temperature of the sterilization tank 210 . Two or more temperature sensors may be attached to the inside of the sterilization tank 210.

When the waste is discharged after the sterilization process is completed, the discharge ports 260 of the sterilization devices 200 and 300 are opened, and the transport screw 220, the transport screw 230, The stirring screw 240 may continue to rotate.

The discharge device 400 may be formed in a shape similar to the transfer screw 220 of the sterilization devices 200 and 300 . An inlet (not shown) into which waste to be supplied to the discharge device 400 is input may be provided at an upper side of an upstream end of the discharge device 400 . A discharge port (not shown) may be provided at the lower side of the downstream end of the discharge device 400 to allow waste to be discharged from the discharge device 400 . The exhaust device of the waste treatment device 1 may also be connected to the exhaust device 400 so that air is sucked in, purified, and discharged even when discharged.

The waste treatment device 1 according to an embodiment of the present invention does not use chemicals for sterilization and includes a double deodorization facility, so it does not discharge environmental pollutants, is manufactured in a small size, and is harmless in beautifying the environment with a beautiful appearance. may not cause

7 is a flowchart illustrating a waste treatment method according to an embodiment of the present invention.

Referring to FIG. 1 and FIG. 7 , the waste treatment method according to an embodiment of the present invention can more safely and efficiently treat infectious waste by using the waste treatment apparatus shown in FIGS. 1 to 6 .

When the waste treatment device 1 is operated, the transfer screw 220, the transfer screw 230, and the stirring screw 240 of the sterilization devices 200 and 300 may be operated first. When the mobile bogie 10 containing the infectious waste is placed on the lift 120, a weight measuring device (not shown) may measure the weight of the waste and transmit it to a central control device (not shown).

When the movable cart 10 is raised by the lift 120 and reaches the input device 110, the input device cover 111 is opened and the movable cart 10 is rotated so that waste can be put into the input device 110. . When the input is completed, the input device cover 111 is sealed, and steam is sprayed into the input device 110, and the crushing device 100 operates to crush the waste (S610).

The crushing device 100 may grind waste to a preset size, operate for a preset time, and then stop. The crushing device 100 may repeatedly perform a crushing operation up to a preset cumulative weight. The crushing device 100 may crush waste into a size of 20 mm X 20 mm, and may stop after operating for 2 minutes and 20 seconds. The crushing operation may be performed repeatedly until the accumulated weight reaches 400 kg to 500 kg.

In a state where the outlet of the grinding device 100, the inlet and outlet of the first sterilization device 200, and the inlet and outlet of the second sterilization device 300 are all open, the transfer screw of the first sterilization device 200 and the second sterilization device 200 are open. Wastes pulverized in the grinding device 100 by the transfer screw of the sterilization device may be transferred to the second sterilization device 300 via the first sterilization device 200 (S620). During crushing and transportation of the waste, all dampers are opened and the exhaust device is operated to inhale and purify the air inside the input device 110, the crushing device 100, the first sterilization device 200 and the second sterilization device 300 You can release it after doing it.

When the transfer of the predetermined amount of pulverized waste to the second sterilization device 300 is completed, the outlet of the first sterilization device 200, the inlet and outlet of the second sterilization device 300 are closed, and the second sterilization device 300 is closed. A damper provided between the 300 and the exhaust duct 530 may also be closed.

While the waste is being transported, the second sterilization device 300 may be prepared in a preheated state at a predetermined temperature. When the supply of waste to the second sterilization device 300 is completed and the second sterilization device 300 is completely sealed, the second sterilization device 300 may perform a sterilization process (S630). While the sterilization operation is performed in the second sterilization device 300, the conveying screw, the conveying screw, and the stirring screw may stir the waste while rotating at a low speed. The second sterilization device 300 may sterilize the waste at a predetermined temperature or higher for a predetermined time. The second sterilization device 300 may sterilize waste at 100 degrees Celsius or higher for 40 minutes.

While the sterilization step is performed in the second sterilization device, the grinding device 100 may grind the waste and the first sterilization device 200 may transfer the crushed waste to the first sterilization device 200 (S631).

When the transfer of the predetermined amount of pulverized waste to the first sterilization device 200 is completed, the outlet of the pulverizer 100, the inlet and outlet of the first sterilization device 200 are closed, and the first sterilization device 200 ) and the damper provided between the exhaust duct 530 may also be closed.

While the waste is being transported, the first sterilization device 200 may be prepared in a preheated state at a predetermined temperature. When the supply of waste to the first sterilization device 200 is completed and the first sterilization device 200 is completely sealed, the first sterilization device 200 continues the sterilization process until the sterilization process of the second sterilization device 300 is terminated. can be done

The supply of waste to the first sterilization device 200 and the second sterilization device 300 is all completed, and the input device 110, the grinding device 100, the first sterilization device 200 and the second sterilization device 300 When all of the dampers are closed, the exhaust system may stop after a predetermined period of time.

When the sterilization process is finished in the second sterilization device 300, the discharge port of the second sterilization device 300 is opened and the discharge device 400 is operated so that sterilized waste of the second sterilization device can be discharged (S640). . When the sterilization process is completed, the second sterilization device 300 may sound an alarm or turn on an alarm light to notify the operator that the waste is completely sterilized and ready to be discharged. When waste is discharged from the second sterilization device 300, the damper is opened and the exhaust device is operated so that air inside the second sterilization device 300 can be sucked in, purified, and then discharged. The discharge device 400 may measure the weight of the discharge from the second sterilization device 300 and transmit it to the central control device.

When the discharge of the sterilized waste from the second sterilization device 300 is completed, the outlet of the second sterilization device 300 is blocked, the outlet of the first sterilization device 200 and the inlet of the second sterilization device are opened, and the first sterilization device 200 is opened. The pulverized waste transported and stored in the sterilization device 200 may be transferred to the second sterilization device (S650).

While the sterilization step (S630) is being performed in the second sterilization device 300, the transfer of the pulverized waste to the first sterilization device 200 (S631) may be resumed. When the sterilization step in the second sterilization device 300 is completed until all wastes are disposed of, all sterilized wastes of the second sterilization device 300 are discharged (S640), and then the first sterilization device 200 The process of transferring the pulverized waste to the second sterilization device (S650) may be repeated.

According to an embodiment of the present invention, a fast waste disposal method can safely and environmentally friendly waste treatment at a faster time and at a lower cost by using two sterilization devices.

In the above, the configuration and characteristics of the present invention have been described based on the embodiments of the present invention, but the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It is obvious to those of ordinary skill in the art, and thus such changes or modifications are within the scope of the appended claims.

1: waste disposal device 10: mobile bogie
100: crushing device 110: input device
111: input device cover 120: lift
200, 300: sterilization device 210: sterilization tank
211: heat transfer oil 212: heater
213: sterilization tank cover 220: transfer screw
230: conveying screw 240: stirring screw
241: stirring wing 250: inlet
260: discharge port 400: discharge device
510: high-temperature catalytic device 520: sterilization filter device
530, 540: exhaust duct 550: exhaust port

Claims (11)

a crushing device that crushes waste;
a first sterilization device that is connected to the grinding device and transports wastes pulverized by the grinding device;
a second sterilization device to which wastes pulverized from the first sterilization device are transported; and
A discharge device for discharging the waste sterilized in the second sterilization device; includes,
The first sterilization device and the second sterilization device, respectively,
A sterilization tank formed of double walls and provided with a heating layer between the double walls;
A transfer screw for transferring the pulverized waste into the sterilization tank;
A conveying screw for conveying waste in a direction opposite to the conveying direction of the conveying screw in the sterilization tank; and
A stirring screw for stirring the waste transferred into the sterilization tank; includes,
a dosing device provided to supply waste to the crushing device; and
Further comprising a steam injection device for injecting steam to the input device,
Further comprising a weight measuring device for measuring and transmitting the weight of the waste supplied to the input device and the weight of the waste discharged to the discharge device,
The crushing device repeatedly performs a crushing operation until the accumulated weight is 400 kg to 500 kg,
The first sterilization device and the second sterilization device, respectively,
a pressure measuring device provided to separately measure the pressure inside the sterilization tank and the pressure inside the heating layer; and
A temperature controller for preventing overheating by measuring the temperature inside the sterilization tank; further comprising,
The conveying screw and the conveying screw are disposed so that the outer diameter of the conveying screw and the outer diameter of the conveying screw are in contact with each other,
The stirring screw is disposed such that the outer diameter of the stirring screw is adjacent to the outer diameter of the conveying screw and the outer diameter of the stirring screw is adjacent to the outer diameter of the conveying screw,
The agitation screw, along with the conveying screw and the conveying screw, so that the agitating vanes included in the agitating screw scoop up the waste moving by the conveying screw and the conveying screw so that the waste is evenly mixed in the sterilization tank. An operating waste disposal device. delete According to claim 1,
The sterilization tank,
Thermal oil filled in the heating layer; and
A waste treatment device comprising a; heater for heating the thermal oil. According to claim 1,
The first sterilization device and the second sterilization device, respectively,
an inlet provided on an upper side of an upstream end of the transfer screw; and
Waste disposal apparatus comprising a; discharge port provided on the lower side of the downstream end of the transfer screw. According to claim 4,
The first sterilization device and the second sterilization device are disposed inclined so that the discharge port is higher than the inlet. According to claim 1,
The waste treatment device further comprising an exhaust device connected to the grinding device, the first sterilization device, and the second sterilization device. According to claim 6,
The exhaust device,
a high-temperature catalytic device for deodorizing air sucked from the grinding device, the first sterilization device, and the second sterilization device; and
and a sterilization filter device for discharging air from the high-temperature catalyst device through a sterilization filter. delete delete delete crushing the waste in a crushing device;
transferring the wastes pulverized by the crushing device to a second sterilization device via a first sterilization device;
sterilizing the waste transferred to the second sterilization device;
transferring wastes pulverized by the pulverization device to the first sterilization device while the sterilizing step is performed in the second sterilization device;
Discharging the sterilized waste of the second sterilization device when the sterilization in the second sterilization device is completed; and
transferring the pulverized waste transferred to the first sterilization device to the second sterilization device when the discharge of the sterilized waste from the second sterilization device is completed;
including,
The step of sterilizing the transported waste,
Waste treatment, in which the agitating screw operates together with the conveying screw and the conveying screw so that the agitating vanes included in the agitating screw scoop up the wastes moved by the conveying screw and the conveying screw so that the wastes are evenly mixed inside the sterilization tank. Way.

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