KR101214947B1 - Food garbage treatment apparatus - Google Patents

Abstract

The present invention relates to a pay-as-you-go food waste collection device which enables the household to settle costs according to the number of discharges and the number of discharges of food waste.
The present invention has a main body (2) having a storage space for storing food waste; A lid 4 which is hinged to the upper portion of the main body 2 to open and close; Locking device (6) for controlling the opening and closing of the lid (4); A cover (8) having a weighing device (7) for measuring the weight of the main body (2) provided on an inner bottom surface thereof, wherein the main body (2) is accommodated; The control unit is mounted to the main body 2 and recognizes the card to calculate the cost according to the weight, and the card recognizer 9 for controlling the on / off operation of the locking device 6 in accordance with the control signal Include.

Description

Pay-as-you-go food waste collection device {FOOD GARBAGE TREATMENT APPARATUS}

The present invention relates to a pay-as-you-go food waste collection device, and more particularly, to a pay-as-you-go food waste collection device for enabling a cost to be settled according to the number of discharges and discharges of food waste discarded by individual households.

In general, garbage generated from general households and small businesses should be disposed of in a fixed-capacity garbage bag produced and sold by each municipality.

Currently, the food waste is put in the food waste directly into the outside bin and the lid is closed.

Therefore, the discharge of food waste is in fact a batch type, so some unscrupulous people are discharging much more food waste than others. It can also be a cause.

By measuring the amount of waste to be discharged, the amount of waste can be reduced in reality, reducing the amount of waste generated, saving the financial resources of waste disposal, and the cost of discharging food waste, which can provide equal opportunities for waste discharge. An imposition system is required.

The present invention has been made to solve the above-mentioned problems of the prior art, and the pay-as-you-go food waste collection device that can achieve the principle of the burden of the discharger and the purpose of reducing the emissions by calculating the cost according to the weight of the waste The purpose is to provide.

An object of the present invention described above, the main body having a storage space for storing food waste; A lid coupled to the upper portion of the main body by a hinge to open and close; Locking device for controlling the opening and closing of the lid; A cover having a weighing device for measuring the weight of the main body on an inner bottom surface thereof and accommodating the main body; The control unit is mounted to the main body and recognizes the card to calculate the cost according to the weight, characterized in that it comprises a card recognizer for controlling the on / off operation of the locking device according to the signal of the control unit Can be achieved by a collecting device.

The locking device includes a first motor which is rotated forward and backward by a DC power supply and has a shaft having a worm gear; The gear that is geared to the worm gear is formed on the side, characterized in that it comprises a latch that is elevated.

The weighing device is a load cell, characterized in that the measured value is transmitted to the control unit of the card reader.

On the other hand the object of the present invention is a storage space formed therein so that the food waste can be stored therein the upper body is opened; An enclosure having the main body housed therein and an upper part opened, an opening / closing door formed on a side thereof to detach the main body, and a weighing device mounted on a bottom thereof; A lid coupled to and hinged to an upper opening of the enclosure; A locking device mounted on an outer side or an inner side of the upper surface of the enclosure to control the opening and closing of the lid; The control unit is mounted on the side of the enclosure and recognizes the card to calculate the cost in accordance with the weight, characterized in that it comprises a card reader for controlling the on / off operation of the locking device in accordance with the control signal It can be achieved by a food waste collection device.

The locking device is mounted on the inner surface or the outer surface of the upper plate of the enclosure, the first motor is rotated forward and reverse by a DC power supply, the first motor having an axis formed with a worm gear; Gears geared to the worm gear is formed on the side, characterized in that it comprises a clasp which is actuated in front, rear.

It is characterized in that the opening and closing means is further provided to automatically open and close the lid after the release of the locking device.

The opening and closing means is connected to the pneumatic or hydraulic supply device and the cylinder body mounted on one side of the upper opening of the housing; A piston which is coupled to the inside of the cylinder body and is elevated; It is connected to the piston and lifted up, characterized in that it comprises a rod coupled to the lower portion of the lid.

The lower portion of the lid is formed with a bracket having a predetermined length of the operation hole, the upper end of the rod is equipped with a roller coupled to the operation hole, the roller is moved in the operation hole during the opening and closing of the lid rod It is characterized in that to guide the lifting.

On the other hand the object of the present invention is a storage space formed therein so that the food waste can be stored therein the upper body is opened; An enclosure having the main body housed therein and an upper part opened, an opening / closing door formed on a side thereof to detach the main body, and a weighing device mounted on a bottom thereof; A lid coupled to open and close at an upper opening of the enclosure; A locking device mounted on an outer side or an inner side of the upper surface of the enclosure to control the opening and closing of the lid; The control unit is mounted on the side of the enclosure and recognizes the card to calculate the cost in accordance with the weight, characterized in that it comprises a card reader for controlling the on / off operation of the locking device in accordance with the control signal It can be achieved by a food waste collection device.

The lid is formed to protrude both sides of the guide, the upper opening of the housing is formed with a guide rail to which the guide is coupled, characterized in that for opening and closing the upper opening while sliding.

The front and rear ends of the guide rail is characterized in that the sensor is formed to limit the opening and closing operation of the lid.

The locking device is mounted on the inner surface or the outer surface of the upper plate of the enclosure, the first motor is rotated forward and reverse by a DC power supply, the first motor having an axis formed with a worm gear; Gears geared to the worm gear is formed on the side, characterized in that it comprises a clasp which is actuated in front, rear.

It is characterized in that the opening and closing means is further provided to automatically open and close the lid after the release of the locking device.

The opening and closing means is characterized by consisting of a rack gear formed to a predetermined length in the lower portion of the lid, a pinion gear geared to the rack gear and a second motor for rotating the pinion gear.

The weighing device is a load cell, characterized in that the measured value is transmitted to the control unit of the card reader.

According to the present invention, by incorporating waste into a cost according to the weight, the principle of the burden of the discharger and the purpose of reducing the emission can be achieved, and the waste is reduced.

1 is a front view showing a pay-as-you-go food waste collection device according to a first embodiment of the present invention,
Figure 2 is a side view showing a food waste food waste collection apparatus according to a first embodiment of the present invention,
3 is a front view showing a pay-as-you-go food waste collection device according to a second embodiment of the present invention;
Figure 4 is a side view showing a food waste food waste collection apparatus according to a second embodiment of the present invention,
5a and 5b is an enlarged view showing the opening and closing operation of the lid of the pay-as-you-go food waste collection device according to the second embodiment of the present invention,
6 is a front view showing a pay-as-you-go food waste collection device according to a third embodiment of the present invention;
7 is a partial side cross-sectional view showing a pay-as-you-go food waste collection device according to a third embodiment of the present invention;
8 is a partially enlarged side cross-sectional view showing a "lid" of a pay-as-you-go food waste collection device according to a third embodiment of the present invention;
Figure 9 is a partially enlarged front sectional view showing a "lid" of a pay-as-you-go food waste collection device according to a third embodiment of the present invention.
10 shows another embodiment of the locking device.
11 is a front view showing another embodiment of a pay-as-you-go food waste collection device according to a third embodiment of the present invention.

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

First Embodiment

1 is a front view showing a pay-as-you-go food waste collection device according to a first embodiment of the present invention, and FIG. 2 is a side view showing the pay-as-you-go food waste collection device according to the first embodiment of the present invention.

As shown in Fig. 1 and Fig. 2, the pay-as-you-go food waste collection device A1 according to the first embodiment of the present invention includes a main body 2 having a storage space for storing food waste; A lid 4 which is hinged to the upper portion of the main body 2 to open and close; Locking device (6) for controlling the opening and closing of the lid (4); A cover (8) having a weighing device (7) for measuring the weight of the main body (2) provided on an inner bottom surface thereof, wherein the main body (2) is accommodated; The control unit is mounted to the main body 2 and recognizes the card to calculate the cost according to the weight, and the card recognizer 9 for controlling the on / off operation of the locking device 6 in accordance with the control signal It is configured to include.

The main body 2 has a storage space formed therein to accommodate food waste, and an upper portion thereof is opened, and a caster 22 is mounted on one side thereof to facilitate movement.

The lid 4 is formed in a rectangular plate shape and is covered with an upper opening of the main body 2 to block the inflow of odors and foreign substances, and a handle 42 is formed at one side and the other side of the main body 2. It is coupled to the upper opening and the shaft pin (44) can be opened and closed while rotating.

One side of the lid 4 is formed with a step 46 so that the locking device 6 is fixed.

The cover 8 has an empty space in which the main body 2 is accommodated, and a weighing apparatus 7 for measuring the weight of the main body 2 is mounted on the inner bottom. And the front surface is open and the inclined plate 82 is formed to facilitate the storage of the main body (2).

The locking device (6) is for controlling the locking and unlocking of the lid (4), the first motor 64 is rotated forward and backward by the DC power supply, the shaft having the worm gear 63 is formed; Gear gears geared to the worm gear 63 is formed on the side is composed of a clasp 62 that is raised and lowered.

That is, when the first motor 64 is driven in the forward direction, the clasp 62 coupled to the worm gear 63 and the gear is pushed up to raise.

Therefore, the clasp 62 is bent in the shape of the "b" shape, the plurality of gears are formed on the side, when the clasp 62 is lowered, the front end is in close contact with the stepped portion 46 of the lid (4) When the latch 62 is raised, the lid 4 is released.

The weighing device 7 can calculate the weight according to the weight by measuring the weight of the food waste collected in the main body 2 and transferring it to the control unit of the card reader 9.

The weighing apparatus 7 may be applied with a conventional electronic or mechanical type, and in particular, it is preferable to apply a load cell which is electronic so that a fine weight change amount may be measured.

The card reader 9 is mounted on the main body 2, and a control unit for recognizing the card and calculating the cost according to the weight measured by the weighing device 7 is formed therein, and the locking device 6 is also located therein. It is formed, and controls the on / off operation of the locking device 6 in accordance with the signal of the control unit.

In addition, the front of the card recognizer (9), the liquid crystal (91) for informing the weight and charge, the speaker (92) for notifying the voice, the card reader 93 for recognizing the card and the start button (94) ) And an end button 95 are formed.

Card reader 93 is a conventional RF method is preferable, but may be implemented in a variety of ways without necessarily being limited thereto.

Referring to the operating relationship of the first embodiment of the present invention configured as described above are as follows.

First, when the start button 94 of the card reader 9 is pressed, a guide message comes out, and when the card is brought into contact with or inserted into the card reader 93 according to the instructions of the guide letter, the lock device 6 is recognized. The lid 4 is opened by releasing operation.

Then, when food waste is put in, the weight is measured by the weighing apparatus (7). That is, the current weight is recognized and the weight increased by the newly added food waste.

After that, the cost is calculated by the weight of the food waste put in, and the amount of money pre-filled in the card is settled accordingly.

Of course, the cost is preferably prepaid or postpaid as described above is preferred.

After closing the lid (4) and pressing the end button 95, the locking device 6 is operated to lock.

Second Embodiment

Figure 3 is a front view showing a pay-as-you-go food waste collection device according to a second embodiment of the present invention, Figure 4 is a side view showing a pay-as-you-go food waste collection device according to a second embodiment of the present invention, Figures 5a and 5b It is an enlarged view showing the opening and closing operation of the lid of the pay-per-use food waste collection device according to the second embodiment of the present invention.

3 to 5b, the pay-per-use food waste collection device A2 according to the second embodiment of the present invention includes a main body 2 having an accommodating space formed therein so as to store food waste and having an upper opening. ; An enclosure (3) in which the main body (2) is accommodated therein and an upper portion thereof is opened, and an opening / closing door (32) is formed on the side to detach the main body (2), and a weighing device (7) is mounted on a bottom surface thereof; A lid 4 hinged to the upper opening of the enclosure 3 to open and close; A locking device (6) mounted on the outer side or the inner side of the upper surface of the housing (3) to control the opening and closing of the lid (4); A card reader 9 is mounted on the side of the enclosure 3 and recognizes the card and calculates the cost according to the weight. The card recognizer 9 controls the on / off operation of the locking device 6 according to the control signal. It is configured to include).

The enclosure 3 is formed in the form of a box having a space to accommodate the main body 2, the upper surface of the lid 4 is formed so as to communicate with the opening of the main body 2, the side opening and closing door communicating with the mounting portion 32 is formed.

On the other hand, the second embodiment of the present invention is characterized in that the opening and closing operation of the locking device (6b) and the lid 4 can be opened or closed manually or the lid 4 can be opened and closed automatically by the opening and closing means (7b). to be.

As shown in Figs. 5A and 5B, the locking device 6b is mounted on the inner or outer surface of the upper plate of the housing 3, is rotated forward and backward by a DC power supply, and has a first shaft having an worm gear 63b. Motor 64b; Gear 623b geared to the worm gear 63b is formed on the side surface and is composed of a clasp 62b that is sunk in front and rear.

That is, when the first motor 64b is driven in the forward direction, the latch 62b coupled with the worm gear 63b is advanced and taken out, and is locked by being inserted into the groove 43 formed on the side of the lid 4. When the latch 62b is retracted and retracted, the latch 62b is separated from the groove 43 and is released.

Therefore, when the locking device 6b is released, the lid 4 can be opened by hand.

On the other hand, opening and closing means (7b) is further provided to open and close the lid 4 automatically after the release of the locking device (6b).

The opening and closing means (7b) is connected to the pneumatic or hydraulic supply device (not shown) and the cylinder body (72b) mounted on one side of the upper opening of the housing (3); A piston (73b) coupled to the inside of the cylinder body (72b) and lifted; It is connected to the piston (73b) is raised and lowered is composed of a rod (74b) coupled to the lower portion of the lid (4).

And the lower portion of the lid 4 is formed with a bracket (67) having a predetermined length of the operation hole 772, the top of the rod (74b) is equipped with a roller 75b coupled to the operation hole 772 do.

Therefore, during the opening and closing operation of the lid 4, the roller 75b can be guided the lifting and lowering of the rod 74b while moving the operating hole 772, whereby the lid 4 is the shaft pin (44) It can be opened and closed while being rotated as a reference point.

That is, when the opening and closing means 7b is opened, hydraulic or pneumatic pressure is supplied to the cylinder body 72b, thereby raising the piston 73b and the rod 74b, and the roller 75b actuates the operation hole 772. Ride to the right while moving to the lid (4) is opened.

On the contrary, when the opening and closing means 7b is closed, when the hydraulic pressure or pneumatic pressure supplied to the cylinder body 72b is released, the piston 73b and the rod 74b are lowered, and the roller 75b is operated by the operation hole 772. ) Is moved to the left to pull down the lid (4) is closed.

Since the lid 4 and the card reader 9 have been described in detail in the first embodiment, redundant description thereof will be omitted.

Referring to the operation of the second embodiment of the present invention configured as described above are as follows.

First, when the start button 94 of the card reader 9 is pressed, a guide message comes out, and when the card is brought into contact with or inserted into the card reader 93 according to the instruction of the guide message, the lock device 6b is recognized. The lid 4 is opened by releasing operation.

Since the opening operation of the lid 4, the locking device 6b, and the opening and closing means 7b has been described above, redundant description thereof will be omitted.

Then, when food waste is put in, the weight is measured by the weighing apparatus (7). That is, the current weight is recognized and the weight increased by the newly added food waste.

After that, the cost is calculated by the weight of the food waste put in, and the amount of money pre-filled in the card is settled accordingly.

Of course, the cost is preferably prepaid or postpaid as described above is preferred.

After pressing the end button 95, the locking device (6b) is to operate the lock to close the lid (4).

Third Embodiment

Meanwhile, in the third embodiment of the present invention, the lid 4 is opened and closed by a slide type, and the configuration of the locking device 6 for driving the lid 4 is changed.

6 is a front view showing a pay-as-you-go food waste collection device according to a third embodiment of the present invention, FIG. 7 is a partial side sectional view showing a pay-as-you-go food waste collection device according to a third embodiment of the present invention, and FIG. Partial enlarged side sectional view showing a "lid" of a pay-as-you-go food waste collection device according to a third embodiment of FIG. 9 is a partially enlarged front sectional view showing a "lid" of a pay-as-you-go food waste collection device according to a third embodiment of the present invention to be.

As shown in Figure 6 and 7, the pay-as-you-go food waste collection device (A3) according to the third embodiment of the present invention, the main body (2) is formed in the storage space and the upper opening to store food waste ; An enclosure (3) in which the main body (2) is accommodated therein and the upper part is opened, and an opening / closing door (32) is formed on the side to detach the main body (2); A weighing apparatus (7) mounted on the bottom of the housing (3) to measure the weight of the main body; A lid 4c coupled to open and close at an upper opening of the enclosure 3; A locking device (6c) mounted on the outer side or the inner side of the upper surface of the housing (3) to control the opening and closing of the lid (4c); A control unit is mounted on the side of the enclosure 3 and recognizes the card and calculates the cost according to the weight. The card recognizer 9 controls the on / off operation of the locking device 6c according to the control signal. )

In particular, as shown in FIGS. 8 and 9, the lid 4c has guides 41c protruding from both sides thereof, and the guide 41c may be coupled to the upper opening 32 of the housing 3. The guide rail 34 is formed, and the upper opening 32 can be opened and closed while sliding.

The guide 41c has a rectangular bar shape, and the guide rail 34 has a “c” shape in cross section so as to have a recess and is formed to have a predetermined length.

Sensors 77c are formed at the front and rear ends of the guide rail 34 to limit the opening and closing operation period of the lid 4c.

That is, the sensor 77c is attached to the front and rear ends of the guide rail 34 so that the lid 4c can control the opening end time and the closing end time.

The locking device 6c is mounted on the inner surface or the outer surface of the upper plate of the housing 3 so as to be locked to the locking jaw 41c of the lid 4.

The locking device 6c includes a first motor 64c which is rotated forward and backward by a DC power supply and has an axis on which a worm gear 63c is formed; The rack gear 623c which is geared to the worm gear 63c is formed on the side, and is composed of a clasp 62c which is actuated forward and backward.

That is, when the first motor 64c is driven in the forward direction, the clasp 62c coupled with the worm gear 63c is advanced and taken out, and is locked in the groove 410c of the locking jaw 41c of the lid 4. When the latch 62c is retracted and retracted, the latch 62c is separated from the groove 410c of the locking jaw 41c and is released.

Therefore, when the locking device 6c is released, the lid 4c can be opened by hand.

10 is a view showing another embodiment of the locking device.

As shown in Fig. 10, another embodiment 6c 'of the locking device includes a second motor 64c' having an axis rotated forward and backward by a DC power supply and having a first worm gear 63c 'formed thereon; The second worm gear 623c ', which is geared to the first worm gear 63c', is formed on an outer circumferential surface thereof, and is formed of a clasp 62c 'which is actuated in front and rear.

In addition, a screw portion 410c-2 'is formed in the groove 410c' of the locking jaw 41c of the lid 4 so as to be screwed with the second worm gear 623c 'of the clasp 62c'.

On the other hand, opening and closing means (7c) is further provided to open and close by sliding the lid (4c) after the release of the locking device (6c).

The opening and closing means 7c rotates the rack gear 72c formed at a predetermined length in the lower portion of the lid 4c, the pinion gear 74c geared to the rack gear 72c and the pinion gear 74c. It consists of the 2nd motor 76c.

Accordingly, the second motor 76c is driven in the forward and reverse directions by the signal of the controller, and the driven pinion gear 74c is rotated in the forward and reverse directions, thereby moving the rack gear 72c and the lid 4c driven therefrom. The opening and closing operation may be performed while moving in the rearward direction.

11 is a front view showing another embodiment of a pay-as-you-go food waste collection device according to a third embodiment of the present invention.

As shown in FIG. 11, the pay-per-use food waste collection device A3 ′ according to another embodiment of the third embodiment of the present invention includes a main body 2 having a storage space formed therein so as to store food waste and having an upper portion opened therein. ); An enclosure (3) in which the main body (2) is accommodated therein and the upper part is opened, and an opening / closing door (32) is formed on the side to detach the main body (2); A weighing apparatus (7) mounted on the bottom of the housing (3) to measure the weight of the main body; A lid 4c coupled to open and close at an upper opening of the enclosure 3; A locking device (6c) mounted on the outer side or the inner side of the upper surface of the housing (3) to control the opening and closing of the lid (4c); A control unit is mounted on the side of the enclosure 3 and recognizes the card and calculates the cost according to the weight. The card recognizer 9 controls the on / off operation of the locking device 6c according to the control signal. ); It comprises a height adjusting means (H) installed at the bottom to adjust the height of the enclosure (3).

Opening and closing means 7c 'is further provided to open and close the lid 4c by releasing the locking device 6c.

The opening and closing means 7c 'is applied to a cylinder C using hydraulic pressure or pneumatic pressure.

That is, the body (C1) of the cylinder (C) is horizontally mounted on the lower surface of the upper body 3, the rod (C2) coupled to the body (C1) to operate back and forth is the shaft pin (the lower portion of the lid 4c) C4).

Therefore, the lid 4c is opened and closed by sliding the lid 4c by the operation of the rod C2.

And the sensor 77c is formed to limit the opening and closing operation section of the lid (4c).

In addition, the height adjustment means (H) is installed in the lower portion of the enclosure 3 can adjust the horizontal and height of the enclosure (3).

Height adjusting means (H) is a bolt (H2) of a predetermined length screwed to the bracket (H1) formed on the lower end of the housing (3) and the support (H3) formed on the lower portion of the bolt (H2) and supported on the ground It is composed.

Referring to the operating relationship of the third embodiment of the present invention configured as described above are as follows.

First, when the start button 94 of the card reader 9 is pressed, a guide message comes out, and when the card is brought into contact with or inserted into the card reader 93 according to the instruction of the guide message, the lock device 6c is recognized. The lid 4c is opened by releasing operation.

Since the opening operation of the lid 4c, the locking device 6c, and the opening / closing means 7c has been described above, redundant description thereof will be omitted.

Then, when food waste is put in, the weight is measured by the weighing apparatus (7). That is, the current weight is recognized and the weight increased by the newly added food waste.

After that, the cost is calculated by the weight of the food waste put in, and the amount of money pre-filled in the card is settled accordingly.

Of course, the cost is preferably prepaid or postpaid as described above is preferred.

After pressing the end button 95, the locking device (6c) is to operate the lock to close the lid (4c).

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

2: Body 4: Lid
6: locking device 7: weighing device
8: cover 9; Card reader

Claims (18)

delete delete delete A main body having an accommodating space formed therein and having an upper opening to store food waste; An enclosure having the main body housed therein and an upper part opened, an opening / closing door formed on a side thereof to detach the main body, and a weighing device mounted on a bottom thereof; A lid coupled to and hinged to an upper opening of the enclosure; A locking device mounted on an outer side or an inner side of the upper surface of the enclosure to control the opening and closing of the lid; The control unit is mounted on the side of the enclosure and recognizes the card to calculate the cost according to the weight, and comprises a card recognizer for controlling the on / off operation of the locking device in accordance with the control signal,
Opening and closing means is further provided to automatically open and close the lid after the release of the locking device, the opening and closing means is connected to the pneumatic or hydraulic supply device cylinder body mounted on one side of the upper opening of the housing; A piston which is coupled to the inside of the cylinder body and is elevated; Is connected to the piston and lifted up and includes a rod coupled to the lower portion of the lid,
The lower portion of the lid is formed with a bracket having a predetermined length of the operation hole, the upper end of the rod is equipped with a roller coupled to the operation hole, the roller is moved in the operation hole during the opening and closing of the lid rod Pay as you go, characterized in that food waste collection device. 5. The method of claim 4,
The locking device
A first motor mounted on an inner surface or an outer surface of the upper plate of the enclosure, the first motor having a shaft in which a worm gear is formed and rotated forward and backward by a DC power source;
A gear that is geared to the worm gear is formed on the side to be sunk forward and backward and engages or releases the groove formed on the side of the lid.
Pay-as-you-go food waste collection device comprising a. delete delete 5. The method of claim 4,
The weighing device is a load cell, and the pay-as-you-go food waste collection device, characterized in that the measured value is transmitted to the control unit of the card recognizer.
delete delete delete delete delete delete 5. The method of claim 4,
The locking device
A second motor which is rotated forward and backward by a DC power supply and has a shaft having a first worm gear;
A second worm gear is geared to the first worm gear is formed on the outer circumferential surface and includes a clasp for actuating the front, rear,
Pay-as-you-go food waste collection device, characterized in that the screw portion is formed in the groove of the locking jaw of the lid to be screwed with the second worm gear of the clasp. delete 5. The method of claim 4,
A meter-based food waste collection device, characterized in that the height adjustment means is installed in the lower portion of the enclosure to set the horizontal and height. delete

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