JP2023118281A - Waste treatment apparatus - Google Patents

Abstract

To provide a waste treatment apparatus which can securely send an organic waste containing a foreign matter from a waste storage tank to a foreign matter remover, and moreover, can prevent a clogging of the foreign matter in the foreign matter remover.SOLUTION: A waste treatment apparatus is assembled with a waste storage tank 1 for storing an organic waste containing a foreign matter, a vibrating screen 3 for removing the foreign matter from the organic waste, and a hose pump 5 attached to a transfer pipe 7 connecting the waste storage tank 1 and the vibrating screen 3 for transferring the organic waste from the waste storage tank 1 to the vibrating screen 3.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a waste treatment apparatus for treating organic waste, and more particularly to a waste treatment apparatus for removing contaminants from organic waste before the organic waste is introduced into a methane fermentation tank. Examples of organic waste include general waste such as raw garbage, boxed lunch/food residue, human waste, septic tank sludge, etc., industrial waste such as pig manure, cow manure, poultry manure, agricultural residue, beverages, processed foods, and daily necessities. things, etc.

In the methane fermentation treatment technology for organic waste containing contaminants such as pig manure, cow manure, garbage, sludge, etc., contaminants are removed from the organic waste stored in the waste storage tank using a pump. Contaminants contained in the organic waste are removed by the pretreatment equipment, and the organic waste from which the contaminants have been removed is sent to a methane fermentation treatment tank. .

In methane fermentation of organic waste, it is important to remove contaminants unsuitable for fermentation before charging into the methane fermentation tank in terms of the following points.
(1) Contaminants can cause pump trips and pipe clogging, hindering stable operation.
(2) Contaminants become scum on the liquid surface in the methane fermentation tank, making it difficult to generate biogas.
Conventionally, in order to prevent the above problems, organic waste is supplied from a solubilized storage tank to a contaminant removal device such as a dehydrator or a screen by a pump, and the contaminant-removed liquid is put into the methane fermentation tank. Was.

However, fibrous substances such as vegetable waste, long soft contaminants such as vinyl such as pieces of plastic bags and garbage nets, and contaminants that are entangled with organic matter and become large, clog the pump and cause the pump to malfunction. Stable operation is difficult due to entanglement with the impeller, and pump parts wear out quickly. In addition, when stable operation becomes impossible due to clogging of pumps and pipes, it is necessary to remove all contaminants by dredging the organic waste storage tank. As a result, not only is the steady operation of the entire facility disturbed, but also a large cost is incurred.

JP 2011-218255 A Japanese Patent Application Laid-Open No. 2020-32392

In order to solve the problems of the conventional technology, Patent Document 1 discloses a waste treatment apparatus configured to send organic waste from an organic waste storage tank through a pipe to a contaminant removal apparatus by gravity flow. Proposed. However, in the device of Patent Document 1, since the contaminant removal device is positioned below the organic waste storage tank, the overall size of the device increases vertically, and the cost of civil engineering works increases. In addition, the valve attached to the pipe is closed to temporarily store the organic waste in the pipe, and then the valve is opened to drop it all at once by gravity flow. There is a problem of waste overflowing from the contaminant removal device. In addition, contaminants clog the contaminant removal device, which reduces the processing capacity, accelerates wear, discharges organic liquid to the contaminant side, reduces the amount of energy recovery, and increases disposal costs (industrial waste costs). , there is a problem.

In Patent Document 2, as a pump for sending organic waste containing contaminants from a waste storage tank, a centrifugal and mixed flow pump is used to prevent contaminants such as fibers and solids in the fluid from clogging the inside of the passage. A device has been proposed that uses a non-clog type pump with a profile to deliver organic waste without being clogged with organic waste. However, in the non-clog type pump of Patent Document 2, since the contaminants tend to flow at a right angle at the inlet of the blade, soft long contaminants and contaminants that are entangled with organic matter and become large tend to accumulate. prone to clogging. Another problem is that the pump is not easy to disassemble. Furthermore, if a sufficient flow path area is secured to prevent clogging, a pipe with a large diameter will be used to transfer more than the required capacity, and a distribution tank will be required for quantitative operation at the transfer destination. Furthermore, there are other problems such as rapid wear and intermittent operation instead of continuous operation.

Therefore, according to the present invention, organic waste containing contaminants can be reliably sent from a waste storage tank to a contaminant removal device, and clogging of the contaminants in the contaminant removal device can be prevented. Provide waste disposal equipment.

In one aspect, a waste storage tank for storing organic waste containing contaminants, a vibrating sieve machine for removing the contaminants from the organic waste, and the waste storage tank and the vibrating sieve machine are connected. A waste treatment system is provided comprising a hose pump attached to a transfer tube for transferring said organic waste from said waste reservoir to said vibratory screen machine.

In one aspect, the hose pump includes a flexible hose having an arc portion, a roller that rotates while pressing the arc portion of the flexible hose, and a pump casing that houses the flexible hose and the roller. and configured to squeeze the flexible hose with the roller to push out the liquid in the flexible hose.
In one aspect, the waste treatment apparatus includes a riser pipe connected to the transfer pipe, a contaminant extraction pipe extending from the side wall of the waste storage tank to the riser pipe, and a contaminant extraction pipe attached to the It further comprises a first valve and a second valve attached to the transfer pipe, wherein the second valve is positioned between a connection point between the riser pipe and the transfer pipe and the waste storage tank. there is
In one aspect, the waste treatment device further includes a third valve attached to the transfer pipe, the third valve being located between the connection point between the riser pipe and the transfer pipe and the hose pump. located in
In one aspect, the waste treatment apparatus further includes a liquid level gauge that measures a liquid level position in the riser pipe.

In one aspect, the vibrating sieve machine comprises a screen for receiving the organic waste, a vibrating mechanism for vibrating the screen, and a scraping mechanism located above the screen.
In one aspect, the screen is constructed of patching metal.
In one aspect, the punching metal has an upstream portion in which holes having a first diameter are formed at a first pitch, and holes having a second diameter smaller than the first diameter are formed in the first pitch. It has a downstream portion formed with a second pitch that is smaller than the one pitch.
In one aspect, the waste treatment apparatus further includes a screw compactor that conveys the contaminants while compressing the contaminants discharged from the vibrating screen machine.

According to the present invention, a hose pump is used as a pump for conveying contaminated organic waste from a waste storage tank to a vibrating sieve machine. A hose pump is a method of squeezing a flexible hose with a roller to push out the liquid in the flexible hose. Since the liquid sucked into the flexible hose is transferred in a smooth semicircular shape without bending, it does not easily break contaminants, and fixed volume operation is possible, eliminating the need for a distribution tank and a hose pump. By changing the rotation speed of , continuous operation is possible at any flow rate from low flow rate to high flow rate. In addition, since the rotating rollers squeeze the flexible hose rather than directly contacting the liquid, long soft contaminants and contaminants that have become large due to organic matter entwining them do not get entangled in the rotating rollers. The strained flexible hose moderately disentangles the contaminants while transporting them, so that the organic waste does not accumulate, get tangled in the pump, or clog the organic waste. can be reliably transferred from the to the vibrating screen machine.

Further, by providing a riser pipe, a first valve, a second valve and a third valve between the waste storage tank and the hose pump, the first valve or the second valve is opened while the third valve is closed. By doing so, part of the organic waste in the waste storage tank flows into the riser pipe, then the first or second valve is closed, and the third valve is opened to flow into the riser pipe to the hose pump. can supply organic waste. If the flow rate withdrawn from the waste storage tank is low, the liquid will flow more easily, and solids containing contaminants will accumulate inside the transfer pipe or stay at the bottom of the waste storage tank, blocking the transfer pipe. Sometimes. However, by opening and closing the valve in this way, it is possible to smoothly flow the organic waste in the waste storage tank, including contaminants, into the riser pipe. , contaminants in the organic waste can be prevented from staying or clogging in the transfer pipe, the contaminant extraction pipe, and the riser pipe.

Since the hose pump can run idle, the 3rd valve can be closed while the hose pump is running. For hose pumps that stop the liquid flow when the pump is stopped, the pump is stopped instead of closing the 3rd valve. may be used to perform the above operation, and simplification of the overall operation is possible. Further, even if the contaminants accumulated in the pipe are introduced into the hose pump at once by the above operation, the organic waste can be reliably transferred with the hose pump without clogging due to the contaminants.

Furthermore, since the hose pump can also be reversed, if the transfer of organic waste is delayed due to stagnation of contaminants, the inside of the riser pipe, transfer pipe, and contaminant extraction pipe can be washed by repeating forward and reverse rotation. be able to. When contaminants are accumulated, they can be reversed and discharged out of the system by inversion. Blockages in the upstream flow path of the hose pump can be resolved as described above. On the other hand, the downstream flow path of the hose pump is less likely to be clogged because contaminants are moderately loosened by the hose pump, and the organic waste can be transferred stably. Therefore, it is desirable that the hose pump upstream channel is shorter than the downstream channel and has a shape with fewer bends.

Since the hose pump utilizes a flexible hose, there is concern about the durability of the flexible hose, and so far it has not been applied to plants. However, since the rotating roller squeezes the flexible hose, there is no mechanical seal, the structure is simple, there is no corrosion or wear, and the speed of deterioration of each part is remarkably slow. Although the flexible hose itself deteriorates due to wear, since it is treated as a consumable item, it can be replaced very cheaply and easily, resulting in greater durability and maintenance than using other pumps. It is superior in terms of manageability and cost.

Also, by adopting the hose pump, it is not necessary to arrange the vibrating screen machine under the waste storage tank. That is, the vibrating sieve machine can be installed at any position with respect to the waste storage tank. For example, it is possible to place the vibrating sieve machine to the side of the waste storage tank or above it. As a result, unnecessary civil engineering work is reduced, and the costs required for installation can be reduced.

Furthermore, the vibrating sieve machine is a contaminant removing device that separates contaminants from the organic waste by applying vibration to the organic waste. Since the vibrating sieve machine does not squeeze the contaminants, clogging of the vibrating sieve machine is less likely to occur. As a result, the vibrating sieve machine can stably continue its operation.

It is a schematic diagram which shows one Embodiment of a waste disposal apparatus. It is a schematic diagram explaining one Embodiment of the structure of a hose pump. FIG. 2 is an enlarged view showing the vibrating screen machine shown in FIG. 1; 1 is a side view of a screw compactor; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing one embodiment of a waste disposal apparatus. As shown in FIG. 1, the waste treatment apparatus includes a waste storage tank 1 for storing organic waste containing contaminants, a vibrating sieve machine 3 for removing contaminants from the organic waste, and a filter for removing contaminants. A hose pump 5 is provided to transfer the organic waste containing waste from the waste storage tank 1 to the vibrating screen machine 3 . The waste reservoir 1 is connected to a vibrating screen machine 3 through a transfer pipe 7 to which a hose pump 5 is attached.

A stirrer 10 is arranged inside the waste storage tank 1 . The agitator 10 agitates the organic waste in the waste storage tank 1 to such an extent that contaminants with good sedimentation properties contained in the organic waste do not accumulate on the bottom of the waste storage tank 1 . Examples of organic waste include general waste such as raw garbage, boxed lunch/food residue, human waste, septic tank sludge, etc., industrial waste such as pig manure, cow manure, poultry manure, agricultural residue, beverages, processed foods, and daily necessities. things, etc.

One end of the transfer pipe 7 is connected to the bottom of the waste storage tank 1 and the other end of the transfer pipe 7 is connected to the vibrating sieve machine 3 . The diameter of the transfer pipe 7 from the bottom of the waste storage tank 1 to the front of the hose pump 5 is large (150A or more) to prevent clogging with contaminants. The diameter is gradually reduced to the diameter that matches the suction port. A hose pump 5 is connected to a transfer pipe 7 and is located laterally at the bottom of the waste reservoir 1 . In one embodiment, the hose pump 5 may be positioned higher than the waste reservoir 1 .

FIG. 2 is a schematic diagram for explaining one embodiment of the structure of the hose pump 5. As shown in FIG. As shown in FIG. 2, the hose pump 5 includes a pump casing 6 forming a circular space 6A inside, a flexible hose 8 disposed within the pump casing 6, and two pipes disposed within the circular space 6A. It has rollers 9, roller arms 13 that rotatably hold the rollers 9, and an electric motor 14 that rotates the roller arms 13 within the circular space 6A. The roller arm 13 is connected to the electric motor 14 . Two rollers 9 are rotatably held at opposite ends of the roller arm 13 .

The flexible hose 8 is an elastic hose or tube. For example, the flexible hose 8 is made of an elastic material (eg rubber) with embedded fibers. A portion of the flexible hose 8 has an arcuate portion arranged along the arcuate inner surface of the pump casing 6 . The two rollers 9 alternately press the arc portion of the flexible hose 8 and crush a portion of the arc portion.

As the electric motor 14 rotates the roller arm 13 as indicated by the arrow in FIG. liquid. By repeating such operations, the liquid is transferred from the inlet 8A of the flexible hose 8 toward the outlet 8B. The hose pump 5 is sometimes called a tube pump or a roller pump. In one embodiment, hose pump 5 may comprise a single roller 9 or more than two rollers 9 .

Since the flexible hose 8 is flattened while the roller 9 is in contact with the flexible hose 8, the hose pump 5 has an image that contaminants are difficult to pass through. Although it has not been used for transportation, there is a certain gap between the arc-shaped inner surface of the pump casing 6 and the roller 9, and the material of the flexible hose 8 is flexible and flexible, so it is flat. Contaminants can be allowed to pass through, and the space in the flexible hose 8, which is not in contact with the roller 9, can be used for feeding. be. Then, as described above, if the contaminants themselves are soft, long contaminants or those that are entangled with organic matters and become large, they can be sent more preferably.

The electric motor 14 is configured to rotate the roller arm 13 and the roller 9 in opposite directions. When the upstream pipe of the hose pump 5 is clogged, the electric motor 14 rotates the roller arm 13 and the roller 9 in opposite directions to cause the liquid to flow back, and the clog in the pipe can be cleared. In addition, by making the rotation speed of the electric motor 14 variable, the flow rate can be arbitrarily changed, and clogging of the pipe can sometimes be eliminated.

Returning to FIG. 1 , in the waste storage tank 1 , even when the organic waste is stirred by the stirrer 10 , some impurities in the organic waste may settle. Contaminants with high sedimentation properties are transferred to the vibrating sieve machine 3 by the hose pump 5 through the transfer pipe 7 together with the homogenized organic waste. Contaminants stay at the bottom of the waste storage tank 1 and the transfer pipe 7, and clogging is likely to occur.

The waste disposal device further comprises a riser pipe 11 extending from the side wall of the waste storage tank 1 to the transfer pipe 7 . One end of the riser pipe 11 is connected to the side wall of the waste storage tank 1 at a position higher than the liquid level in the waste storage tank 1, and the other end of the riser pipe 11 is transferred upstream of the hose pump 5. It is connected to tube 7 . A connection point between the riser pipe 11 and the transfer pipe 7 is located between the waste storage tank 1 and the hose pump 5 . The waste treatment apparatus also has a contaminant extraction pipe 12 that horizontally extends from the side wall of the waste storage tank 1 to a riser pipe 11 . One end of the contaminant extraction pipe 12 is connected to the side wall of the waste storage tank 1 at a position lower than the liquid surface in the waste storage tank 1, and the other end of the contaminant extraction pipe 12 is connected to the rising pipe 11. ing. Both the riser pipe 11 and the contaminant extraction pipe 12 have the same diameter as the transfer pipe 7 (for example, a large diameter of 150 A or more).

A liquid level gauge 17 for measuring the liquid level in the riser pipe 11 is attached to the riser pipe 11, and a first valve 16A is attached to the contaminant extraction pipe 12. Further, a second valve 16B is attached to the transfer pipe 7 and positioned between the connection point between the riser pipe 11 and the transfer pipe 7 and the waste storage tank 1, and the second valve 16B is attached to the transfer pipe 7 to connect the riser pipe 11 and the transfer pipe 7. A third valve 16C is attached to the transfer pipe 7 between the connection point and the hose pump 5 .

The waste disposal apparatus includes an operation control section 18 that controls the opening/closing operations of the first valve 16A, the second valve 16B, and the third valve 16C, and the operation of the hose pump 5. As shown in FIG. The opening/closing operations of the first valve 16A, the second valve 16B, and the third valve 16C and the operation of the hose pump 5, which will be described below, are controlled manually or by the operation control unit 18.

When the first valve 16A and the third valve 16C are closed and the second valve 16B is opened, contaminants that have settled to the bottom of the waste storage tank 1 flow into the riser pipe 11 through the transfer pipe 7, and 11. When the first valve 16A remains closed, the second valve 16B is closed, and the third valve 16C is opened, the contaminants stored in the riser pipe 11 are transferred to the vibrating screen machine 3 by the hose pump 5.

When the second valve 16B and the third valve 16C are closed and the first valve 16A is opened, contaminants floating on the liquid surface in the waste storage tank 1 are drawn into the rising pipe 11 through the contaminant extraction pipe 12. It flows in and is stored in the riser pipe 11 . When the first valve 16A is closed and the third valve 16C is opened while the second valve 16B remains closed, the contaminants stored in the riser pipe 11 are transferred to the vibrating screen machine 3 by the hose pump 5.

In this way, by alternately opening and closing the third valve 16C and the second valve 16B, or alternately opening and closing the third valve 16C and the first valve 16A, contaminants with high sedimentation and the liquid surface Both floating contaminants can be removed. Furthermore, by alternately opening and closing the valve, the contaminants are intermittently and vigorously pulled out of the waste storage tank 1, and the inner bottom of the waste storage tank 1, the transfer pipe 7, and the contaminants It is possible to prevent contaminants from remaining in the extraction pipe 12 and the riser pipe 11 and clogging them.

The liquid level gauge 17 is preferably a differential pressure type liquid level gauge which is installed by branching from the riser pipe 11 and has no detection part in the riser pipe 11 . By controlling the opening and closing operations of the first valve 16A, the second valve 16B, and the third valve 16C, and the start and stop of the hose pump 5, while sensing the increase or decrease in the liquid level in the riser pipe 11 with the liquid level gauge 17. , it becomes possible to smoothly and effectively transfer part of the organic waste containing contaminants stored in the waste storage tank 1 by the water pressure acting on the organic waste. With the third valve 16C open and the hose pump 5 in operation, the first valve 16A and the second valve 16B are opened and closed while the liquid level gauge 17 senses an increase or decrease in the liquid level in the riser pipe 11. This allows for perfect continuous operation.

In the waste storage tank 1, even when the organic waste is stirred by the stirrer 10, some of the contaminants in the organic waste may float on the liquid surface. Contaminants floating on the liquid surface are transferred to the vibrating sieve machine 3 by the hose pump 5 through the contaminant extraction pipe 12 .

By adopting the hose pump 5 , the vibrating screen machine 3 can be installed at any position with respect to the waste storage tank 1 . For example, it becomes possible to dispose the vibrating screen machine 3 on the side or above the waste storage tank 1 . In addition, since it is possible to directly connect the hose pump 5 and the vibrating sieve machine 3 via the transfer pipe 7 without installing a distribution tank before the vibrating sieve machine 3, as a result, civil engineering work, water tanks and the number of equipment can be reduced. This reduces the cost required for installation and equipment costs. In addition, the working environment for daily maintenance, equipment repair, and cleaning will be improved.

FIG. 3 is an enlarged view showing the vibrating screen machine 3 shown in FIG. The vibrating sieve machine 3 is a contaminant removal device that removes contaminants from organic waste by applying vibration to the organic waste. The vibrating sieve machine 3 includes a screen 20 for receiving organic waste containing contaminants, a vibrating mechanism 22 for vibrating the screen 20, and a scraping mechanism 24 arranged above the screen 20. In this embodiment, the screen 20 is arranged horizontally. Organic waste transferred from the waste storage tank 1 is supplied to the end of the screen 20 .

Screen 20 is a filter that removes contaminants from organic waste. The organic liquids that make up the organic waste thrown onto the screen 20 pass through the screen 20 while contaminants in the organic waste are captured by the screen 20 . Specific examples of the screen 20 include punching metal, wedge wire, and mesh. In this embodiment, the screen 20 uses punching metal having a relatively simple structure. The perforated metal has the advantage that it is difficult for long contaminants to clog, and even if clogged, it can be easily removed.

Contaminants caught on screen 20 are moved over screen 20 by scraping mechanism 24 . The scraping mechanism 24 includes an endless belt 28 hooked on pulleys 25A and 25B, a rotating device 30 for rotating the pulley 25A, and a plurality of rakes 32 fixed to the endless belt 28 at equal intervals. When the rotating device 30 rotates the pulley 25A, the endless belt 28 circulates and the rake 32 moves along the screen 20. As shown in FIG. Contaminants are moved over screen 20 by rake 32 .

As the contaminants are moved over the screen 20, the screen 20 is vibrated by a vibrating mechanism 22. As shown in FIG. The vibrating mechanism 22 includes an eccentric rotor 34 that contacts the screen 20 and a rotating device 35 that rotates the eccentric rotor 34 . The eccentric rotor 34 is in contact with the bottom surface of the screen 20 . When the rotating device 35 rotates the eccentric rotor 34, the eccentric rotor 34 vibrates the screen 20 up and down. Therefore, while the contaminants are moved over the screen 20 by the scraping mechanism 24, the screen 20 and the contaminants vibrate, and the organic liquid remaining in the contaminants flows down through the screen 20. As a result, the recovery rate of the organic liquid in the vibrating sieve machine 3 is improved.

Contaminants on the screen 20 are only vibrated and not squeezed. That is, the vibrating sieve machine 3 removes the organic liquid from the contaminants by vibration without squeezing the contaminants on the screen 20 . Since contaminants are not pressed against the screen 20, clogging of the screen 20 with contaminants is prevented. Furthermore, since the screen 20 is vibrated up and down, clogging of the screen 20 is less likely to occur. As a result, the vibrating screen machine 3 can stably continue its operation.

At least one pressure water nozzle 36 for spraying pressure water toward the screen 20 is arranged below the screen 20 . In this embodiment, a plurality of pressure water nozzles 36 are arranged below the screen 20 . The pressure water nozzle 36 periodically discharges pressure water upward from below the screen 20 and has a cleaning function of removing clogged contaminants. By providing such a pressure water nozzle 36, clogging is less likely to occur and stable operation is possible.

In this embodiment, the screen 20 is made of punching metal. A punching metal is a metal plate in which a plurality of holes are formed. In one embodiment, the punching metal may have regions with different hole diameters and pitches (density). Specifically, holes having a first diameter are formed at a first pitch (first density) at the upstream portion of the punching metal, and the holes having the first diameter are formed at the downstream portion of the punching metal. Holes having a second smaller diameter are formed at a second pitch (second density) that is smaller than the first pitch. A perforated metal having such a structure can efficiently pass an organic liquid while preventing impurities from passing through.

The hose pump 5 not only does not clog, but can also transfer contaminants without destroying them, so contaminants with large particle sizes are present when they reach the vibrating sieve machine 3 . Some of these contaminants are gradually subdivided while being vibrated in the process of moving from the upstream side to the downstream side of the vibrating screen machine 3. It is advantageous to have regions with different hole diameters and pitches (density).

As described above, the hose pump 5 not only does not clog, but also can transfer contaminants without destroying them, so that contaminants are less likely to become fine. Therefore, contaminants are less likely to leak from the screen 20 made of punching metal. In addition, foreign matters on the screen 20 vibrate under atmospheric pressure and are moved by the scraping mechanism 24, so that they do not stick to the screen 20 and clog the screen 20.例文帳に追加

As shown in FIG. 1, the organic liquid that has passed through the screen 20 is sent to an organic liquid recovery tank 40 arranged below the vibrating screen machine 3 . On the other hand, contaminants are moved on screen 20 and sent to screw compactor 50 . The screw compactor 50 is arranged adjacent to the vibrating screen machine 3 and positioned above the organic liquid recovery tank 40 . The screw compactor 50 is a screw conveyor that separates the organic liquid from the contaminants and transports the contaminants. The screw compactor 50 is inclined downward toward the organic liquid recovery tank 40 . The tilt angle of the screw compactor 50 is adjustable.

4 is a side view of the screw compactor 50. FIG. The screw compactor 50 comprises a cylinder 51 , a screw 54 arranged within the cylinder 51 , an electric motor 55 for rotating the screw 54 , and an outlet plug 57 arranged at the end of the cylinder 51 . In FIG. 4, a partial cross-sectional view of the cylindrical body 51 is shown. The axial direction of the screw 54 coincides with the longitudinal direction of the cylindrical body 51 . An inlet 52 is formed in the upper portion of the cylindrical body 51 and a drain 53 is formed in the lower portion of the cylindrical body 51 . A drain 53 is located below the inlet 52 . The screw compactor 50 is arranged at an angle so that the outlet plug 57 is higher than the drain 53 .

Contaminants discharged from the vibrating screen machine 3 are introduced into the cylindrical body 51 through the inlet 52 . As electric motor 55 rotates screw 54 , screw 54 pushes contaminants within barrel 51 toward outlet plug 57 . The outlet plug 57 has an opening 57a. Contaminants are pushed out little by little from the opening 57 a of the outlet plug 57 while being pressed against the outlet plug 57 . The exit plug 57 provides resistance to movement of the contaminants within the cylinder 51 and the contaminants are squeezed out entirely. Therefore, contaminants are transferred to the outlet plug 57 while being squeezed by the screw 54 within the cylindrical body 51 . The organic liquid remaining in the contaminants is separated from the contaminants, flows down the inclined cylindrical body 51 and is discharged from the drain 53 . The contaminants themselves are also reduced in volume. The organic liquid discharged from the drain 53 is recovered in the organic liquid recovery tank 40 shown in FIG. By the hose pump 5 and the vibrating sieve 3, the contaminants are not destroyed and are sent in a bulky state, so the screw compactor 50 has a very high volume reduction effect.

The screw 54 is a shaftless screw composed of a helical plate. Therefore, even if the load applied to the screw 54 changes due to a change in the viscosity of contaminants or a change in the rotation speed of the screw 54, the entire screw 54 expands and contracts like a spring, so that the screw 54 is less likely to be overloaded. Furthermore, contaminants do not get entangled with the shaft. In addition, since the screw 54, which is a non-shafted screw, has high conveying efficiency, it can be rotated at a low speed and driven with low power. Further, the screw 54, which is a shaftless screw, also has the advantage of less wear and less vibration.

In this way, the screw compactor 50 can transfer contaminants while squeezing them. Therefore, the recovery rate (energy recovery rate) of organic waste is improved, and the cost of disposal of industrial waste can be reduced. The entire cylindrical body 51 is made of a metal plate without holes, not a screen. Therefore, even if the screw 54 squeezes the contaminants, the contaminants are not caught on the cylindrical body 51 . Furthermore, since the cylindrical body 51 has no openings other than the inlet 52 and the drain 53, the odor is less likely to leak out.

As described above, since the hose pump 5 and the vibrating sieve 3 have a structure that is not clogged with contaminants, the waste treatment apparatus according to this embodiment can stably continue its operation. can.

The above-described embodiments are described for the purpose of enabling a person having ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. Various modifications of the above embodiments can be made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Accordingly, the present invention is not limited to the described embodiments, but is to be construed in its broadest scope in accordance with the technical spirit defined by the claims.

1 Waste Storage Tank 3 Vibrating Sieve Machine 5 Hose Pump 6 Pump Casing 6A Circular Space 7 Transfer Pipe 8 Flexible Hose 8A Inlet 8B Outlet 9 Roller 10 Stirrer 11 Rise Pipe 12 Contaminant Extraction Pipe 13 Roller Arm 14 Electric Motor 16A 1st valve 16B 2nd valve 16C 3rd valve 17 Liquid level gauge 18 Operation control unit 20 Screen 22 Vibration mechanism 24 Scraping mechanism 25A, 25B Pulley 28 Endless belt 30 Rotating device 32 Rake 34 Eccentric rotor 35 Rotating device 36 Pressure water nozzle 40 organic liquid recovery tank 50 screw compactor 51 cylinder 52 inlet 53 drain 54 screw 55 electric motor 57 outlet plug

Claims (9)

a waste storage tank for storing organic waste containing contaminants;
a vibrating sieve machine for removing the contaminants from the organic waste;
A waste treatment apparatus comprising a hose pump attached to a transfer pipe connecting said waste storage tank and said vibrating screen machine to transfer said organic waste from said waste storage tank to said vibrating screen machine. The hose pump includes a flexible hose having an arc portion, a roller that rotates while pressing the arc portion of the flexible hose, and a pump casing that houses the flexible hose and the roller. 2. The waste disposal apparatus according to claim 1, wherein said roller is configured to squeeze said flexible hose to push out liquid in said flexible hose. a riser pipe connected to the transfer pipe;
a contaminant extraction pipe extending from the side wall of the waste storage tank to the rising pipe;
a first valve attached to the contaminant extraction pipe;
further comprising a second valve attached to the transfer tube;
3. The waste treatment apparatus according to claim 1, wherein said second valve is positioned between a connection point between said riser pipe and said transfer pipe and said waste storage tank. further comprising a third valve attached to the transfer pipe;
4. The waste treatment apparatus according to claim 3, wherein said third valve is located between said hose pump and a connection point between said riser pipe and said transfer pipe. 5. The waste treatment apparatus according to claim 4, further comprising a liquid level gauge for measuring a liquid level position within said riser pipe. The vibrating screen machine is
a screen for receiving the organic waste;
a vibrating mechanism for vibrating the screen;
6. A waste disposal apparatus according to any one of claims 1 to 5, comprising a scraping mechanism arranged above the screen. 7. A waste disposal device according to claim 6, wherein said screen is constructed of patching metal. The punching metal has an upstream portion in which holes having a first diameter are formed at a first pitch, and holes having a second diameter smaller than the first diameter are formed at a pitch greater than the first pitch. 8. A waste disposal device according to claim 7, having a downstream portion formed with a second pitch having a smaller pitch. The waste treatment apparatus according to any one of claims 1 to 8, further comprising a screw compactor that transfers the contaminants while compressing the contaminants discharged from the vibrating sieve machine.

Images