CN217082560U - Garbage feeding system with sealing and isolating device - Google Patents

Abstract

The utility model relates to a garbage feeding system with a sealing and isolating device, which is a feeding hopper from top to bottom in sequence, chute and dispenser, the upper end of chute and the bottom fixed connection of feeder hopper, the feeder hopper sets up sealed isolating device with the junction of chute, sealed isolating device is including the dodge gate that can rotate, the dodge gate is located the chute of feeder hopper and chute junction, the dodge gate can cover feeder hopper and chute junction completely, the rear end of dodge gate is fixed on the oscillating axle, the both ends of oscillating axle are worn out respectively behind the chute with the one end fixed connection of swing arm, the other one end of swing arm is articulated with the flexible end of sealed pneumatic cylinder, the base of sealed pneumatic cylinder passes through the fixing base to be fixed on the lateral wall of chute, the base of sealed pneumatic cylinder is articulated with the fixing base, the flexible swing that drives the swing arm of sealed pneumatic cylinder, the wobbling angle that the wobbling just in time accorded with the angle that the sealing door was opened. The utility model discloses simple structure, convenient operation.

Description

Garbage feeding system with sealing and isolating device

Technical Field

The utility model belongs to the technical field of the domestic waste burns, a rubbish charge-in system with sealed isolating device is related to.

Background

The feeding system of the garbage incineration process is mainly used for receiving and storing garbage, and the stored garbage is continuously and safely conveyed to a fire grate to be incinerated through a reciprocating mechanism. The detailed structure comprises a feed hopper, a chute and a feeder (a feed trolley and a feed platform).

When the incinerator is started and stopped and garbage is not received, western medicines realize the isolation inside and outside the incinerator.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a garbage feeding system with a sealing and isolating device, which can solve the above problems.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a garbage feeding system with a sealing and isolating device is provided, which is a feeding hopper from top to bottom in sequence, chute and dispenser, the upper end of chute and the bottom fixed connection of feeder hopper, the feeder hopper sets up sealed isolating device with the junction of chute, sealed isolating device is including the dodge gate that can rotate, the dodge gate is located the chute of feeder hopper and chute junction, the dodge gate can cover feeder hopper and chute junction completely, the rear end of dodge gate is fixed on the oscillating axle, the both ends of oscillating axle are worn out respectively behind the chute with the one end fixed connection of swing arm, the other one end of swing arm is articulated with the flexible end of sealed pneumatic cylinder, the base of sealed pneumatic cylinder passes through the fixing base to be fixed on the lateral wall of chute, the base of sealed pneumatic cylinder is articulated with the fixing base, the flexible swing that drives the swing arm of sealed pneumatic cylinder, the wobbling angle that the wobbling just in time accorded with the angle that the sealing door was opened.

Further, a sealing door space for accommodating a sealing door is arranged at the rear side of the interior of the chute.

Further, when the isolation door is fully opened, the isolation door and the rear side wall of the chute are in a vertical plane.

Furthermore, the feed hopper adopts an inverted bell-mouthed structure.

Further, the sealing hydraulic cylinder is connected with the controller.

The beneficial effects of the utility model reside in that:

the utility model adds a sealing and isolating device between the feed hopper and the chute, which can isolate a large amount of air exchange inside and outside the incinerator when closing, prevent the air outside the incinerator from entering when the incinerator is started, or prevent the hot air inside the incinerator from escaping when the incinerator is stopped; when the feeding system is opened, the feeding channel is kept smooth, and feeding of the feeding system is not influenced. The sealing and isolating device is simple in structure and convenient to operate, can automatically control the opening and closing of the sealing and isolating device, and meets the production requirements.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of a waste incineration feeding system;

FIG. 2 is a schematic view of the feed hopper;

FIG. 3 is a front view of the bridge breaker mounted within the feed hopper;

FIG. 4 is a top view of the bridge breaker mounted within the feed hopper;

FIG. 5 is a schematic structural diagram of a bridging device and a locking device of the feed hopper;

FIG. 6 is a front view of the locking device;

FIG. 7 is a top view of the locking device;

FIG. 8 is a front view of the receptacle;

FIG. 9 is a top view of the socket;

FIG. 10 is a schematic view of the chute and the sealing and isolating device within the chute;

FIG. 11 is a cross-sectional view of the junction of the isolation door and the swing arm;

FIG. 12 is an enlarged view of the seal isolator;

FIG. 13 is an enlarged partial view at the rocker arm;

FIG. 14 is a partial enlarged view of the bottom connecting structure of the sealing cylinder;

FIG. 15 is a front view of the chute and seal isolation apparatus;

fig. 16 is a control system diagram of the present system.

Reference numerals:

100. a feed hopper; 110. a front wall; 120. a rear wall; 121. a guide strip; 122. a limiting plate; 123. a high level gauge; 200. a chute; 210. sealing the door space; 220. a low level indicator; 230. opening a switch; 240. closing the switch; 300. a feeder; 400. a bridge breaking device; 410. a frame body; 411. a hammer head; 412. a first guide groove; 413. a first cover plate; 414. a guide wheel; 415. a second cover plate; 416. locking; 417. the broken frame moves back to the position switch; 418. the broken frame enters a position switch; 420. a frame breaking hydraulic cylinder; 421. a first hydraulic cylinder support; 422. breaking a bridge and hydraulically driving a reversing valve; 500. a locking device; 510. a second support; 520. locking a hydraulic cylinder; 530. a lock head; 531. an induction sheet; 540. a socket; 541. a jack; 550. a switch mounting bracket; 551. mounting holes; 560. locking the in-position switch; 570. locking the return switch; 580. locking a hydraulic drive reversing valve; 600. sealing the isolation device; 610. an isolation gate; 620. a swing shaft; 630. a rocker arm; 640. sealing the hydraulic cylinder; 650. a sealed hydraulically driven reversing valve; 700. a protection plate; 800. and a controller.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 to 16, a feeding system for waste incineration sequentially comprises a feeding hopper 100, a chute 200 and a feeder 300 from top to bottom, wherein the feeding hopper 100 is of an inverted bell mouth structure and has a large top and a small bottom, the chute 200 is a rectangular tube, and the upper end of the chute 200 is fixedly connected with the bottom of the feeding hopper 100 through a flange. The chute 200 is divided into an upper section and a lower section, and the chute 200 is fixedly connected with each other through an expansion joint. The feeder 300 comprises a feeding platform and a feeding trolley above the feeding platform, the feeding trolley is positioned at the outlet of the chute 200, the feeding trolley reciprocates on the feeding platform, and the garbage falling from the chute 200 is continuously and safely conveyed to a fire grate for incineration. The feed car is controlled by the controller 800.

The feeding hopper 100 includes a front wall 110 and a rear wall 120, the front wall 110 being a slant surface, and the rear wall 120 being a vertical surface. The inner side wall of the rear wall 120 is provided with a bridging device 400, and the bridging device 400 can break the bridge between the feed hopper 100 and the chute 200.

The frame breaking and bridging device 400 comprises a vertically arranged frame body 410, the frame body 410 is of a rectangular frame structure, the lower end of the frame body 410 is provided with a hammer head 411 integrated with the frame body, and in order to guarantee the frame breaking effect, the hammer head 411 is of a triangular structure with the tip end facing downwards. The frame body 410 is connected with the telescopic end of the frame breaking hydraulic cylinder 420, and the frame breaking hydraulic cylinder 420 drives the frame body 410 to realize up-and-down reciprocating motion, so that a bridge breaking effect is realized. The frame breaking hydraulic cylinder 420 is vertically arranged, the telescopic end of the frame breaking hydraulic cylinder 420 faces downwards, the upper end of the frame breaking hydraulic cylinder 420 is fixed to the first hydraulic cylinder support 421, the first hydraulic cylinder support 421 is fixed to the upper end face of the rear wall 120, and the end of the first hydraulic cylinder support 421 extends out of the outer side of the rear wall 120 and then is hinged to the frame breaking hydraulic cylinder 420. The frame breaking hydraulic cylinder 420 extends into the frame body 410 and then the telescopic end thereof is fixedly connected with the lower end of the interior of the frame body 410. The frame breaking hydraulic cylinder 420 is connected with the controller 800.

The preferred breaking hydraulic cylinders 420 are provided in a pair, and the breaking hydraulic cylinders 420 are symmetrically provided with respect to the center line of the frame body 410.

In order to prevent the frame body 410 from swinging left and right, the side wall of the frame body 410 opposite to the rear wall 120 is provided with a first vertically extending guide groove 412, the corresponding rear wall 120 is fixed with a guide strip 121 matched with the first guide groove 412, the guide strip 121 is also vertically arranged, preferably, the first guide groove 412 is provided with a pair and is symmetrically arranged relative to the central line of the frame body 410, and the same guide strip 121 is also provided with a pair.

The outer side of the frame body 410 provided with the broken frame hydraulic cylinder 420 is provided with a detachable cover plate I413, and the cover plate I413 can be opened for operation when the broken frame hydraulic cylinder 420 is installed or overhauled.

In order to prevent the upper end of the frame body 410 from being inclined, a limiting plate 122 is fixed to the rear wall 120 on the left and right sides of the frame body 410, the limiting plate 122 is disposed parallel to the rear wall 120, the corresponding end of the frame body 410 is located between the limiting plate 122 and the rear wall 120, and a second guide groove of the frame body 410 is formed between the rear wall 120 and the limiting plate 122. In order to reduce the friction force of the vertical movement of the frame body 410, a pair of guide wheels 414 located on the same horizontal line are respectively fixed on the upper portions of the left and right side walls of the frame body 410, and the two guide wheels 414 are respectively in contact with the rear wall 120 and the limiting plate 122 to realize rolling friction. In order to facilitate the installation and maintenance of the guide wheel 414, a second cover plate 415 is arranged on the outer side wall of the frame body 410 at a position corresponding to the guide wheel 414, the second cover plate 415 can be detached, and the installation and maintenance of the guide wheel 414 are realized at the second cover plate 415.

When the bridge is released or no bridge is formed, the bridge breaking device 400 needs to be pulled to the highest point by the bridge breaking hydraulic cylinder 420, so that feeding of the feeding hopper 100 is not affected, at this time, a vertical downward acting force always exists on the bridge breaking device 400 under the action of gravity, and the bridge breaking hydraulic cylinder 420 correspondingly has an upward pulling force to keep the bridge breaking device balanced and not fall. However, it is difficult to maintain the pressure and maintain the tension of the frame-breaking hydraulic cylinder 420 for a long time, and the frame-breaking device 400 falls down due to gravity because the upward tension is reduced due to natural pressure relief inside the frame-breaking hydraulic cylinder 420. Therefore, to solve the problem that the feeding hopper 100 is affected by the natural falling of the bridging device 400 when the bridging device 400 is not in operation, a locking device 500 needs to be designed to fix the bridging device 400 at the highest position of the feeding hopper 100.

The locking device 500 is provided on the upper end surface of the rear wall 120 at the center line position of the frame body 410. The locking device 500 comprises a second support base 510, a locking hydraulic cylinder 520 horizontally placed is arranged on the second support base 510, and the locking hydraulic cylinder 520 is electrically connected with the controller 800. The telescopic end of the locking hydraulic cylinder 520 faces the bridge breaking device 400 and is perpendicular to the frame body 410 of the bridge breaking device 400, and the telescopic end of the locking hydraulic cylinder 520 is fixedly connected with a long-strip-shaped lock head 530. One end of the lock head 530 is hinged with the telescopic end of the locking hydraulic cylinder 520 through a pin shaft. A socket 540 is fixed on the second support 510 close to the bridging device 400, a jack 541 which is matched with the lock 530 and penetrates through the socket 540 is arranged in the middle of the socket 540, and the lock 530 can penetrate through the jack 541 and reciprocate in the jack 541.

A lock catch 416 matched with the lock head 530 is fixed in the middle of the upper end surface of the frame body 410 of the corresponding bridge-breaking device 400. The cross-section of the lock catch 416 is an inverted L-shaped structure that opens toward the lock head 530. The locking head 530 can be inserted into the lock catch 416. To facilitate insertion of the locking head 530 into the catch 416, the upper edge of the free end of the locking head 530 is chamfered.

A switch mounting rack 550 is fixed on a second support 510 at the side of the socket 540, mounting holes 551 distributed front and back are formed in the switch mounting rack 550, the mounting holes 551 are horizontal long round mounting holes, the two mounting holes 551 are on the same horizontal line, a locking in-position switch 560 and a locking out-position switch 570 are respectively fixed in the mounting holes 551, the locking in-position switch 560 and the locking out-position switch 570 are respectively position sensors, a sensing piece 531 matched with the locking in-position switch 560 and the locking out-position switch 570 is fixed on the lock head 530, when the sensing piece 531 reaches the locking in-position switch 560, the locking hydraulic cylinder 520 stops extending, and when the sensing piece 531 reaches the locking out-position switch 570, the locking hydraulic cylinder 520 stops retracting. The lock-in bit switch 560 and the lock-out bit switch 570 are electrically connected to the controller 800, respectively.

The locking in-position switch 560 can limit the insertion of the lock cylinder 530 into the lock catch 416 to meet the locking requirement. The locking in-place switch 570 requires the locking head 530 to completely withdraw from the locking buckle 416 without causing interference to the operation of the bridge-breaking device 400.

An arc-shaped protection plate 700 is fixed above the locking device 500 and the first hydraulic cylinder support 421, and the protection plate 700 is used for preventing impurities such as garbage and dust from entering the locking device 500 and the first hydraulic cylinder support 421.

The sealing and isolating device 600 is arranged at the joint of the feed hopper 100 and the chute 200, and the sealing and isolating device 600 is used for realizing the isolation of the inside and the outside of the incinerator when the household garbage incinerator is started and stopped and does not receive garbage.

The seal isolation device 600 includes a rotatable isolation door 610, the isolation door 610 is located within the chute 200 at the junction of the feed hopper 100 and the chute 200, and the isolation door 610 may completely cover the junction of the feed hopper 100 and the chute 200. The rear end of the isolating door 610 is fixed on the swinging shaft 620, two ends of the swinging shaft 620 penetrate out of the chute 200 respectively and then are fixedly connected with one end of the swinging arm 630, the other end of the swinging arm 630 is hinged with the telescopic end of the sealing hydraulic cylinder 640, the base of the sealing hydraulic cylinder 640 is fixed on the side wall of the chute 200 through the fixing seat, and the base of the sealing hydraulic cylinder 640 is hinged with the fixing seat. The extension and contraction of the sealing hydraulic cylinder 640 drives the rocker arm 630 to rotate, and the swinging angle just accords with the opening angle of the sealing door. The sealing cylinder 640 is connected to the controller 800.

The junction of the swing shaft 620 and the chute 200 is sealed by shaft end seal plates and seal strips.

The inside rear side of chute 200 is provided with sealing door space 210 that is used for holding the sealing door, and when the sealing door was opened completely, the sealing door guaranteed falling smoothly of rubbish in a vertical plane with the rear side wall of chute 200.

If the chute 200 is longer, a plurality of isolation doors 610 can be arranged in the middle for connection, and sealing strips are fixed at the joints of the isolation doors 610 and the isolation doors 610 for sealing. The connection between the isolation door 610 and the swing shaft 620 of the isolation door 610 is fixedly connected by a fixed connection.

The sealing isolation door 610 is provided with an isolation door limiting device, and the corresponding positions on the side wall of the chute 200 are respectively provided with a sealing in-position switch and a sealing out-position switch. The sensing blocks matched with the seal in-position switch and the seal out-position switch are arranged on the rocker arm 630 and rotate along with the extension and contraction of the seal hydraulic cylinder 640 together with the rocker arm 630. When the rocker arm 630 and the sensing block rotate to the position of the seal in-place switch or the seal back-to-place switch, the switch outputs a carry signal or a back-to-place signal to the controller 800, the controller 800 stops supplying oil, and the seal hydraulic cylinder 640 stops acting, so that the isolation door 610 keeps an open state or a closed state.

In order to realize the automatic control of the system, a fixed high level indicator 123 is arranged at a position close to the lower end of the feeding hopper 100, the high level indicator 123 is connected with the controller 800, the high level indicator 123 detects feeding, and when the garbage storage position reaches the position, a high level material signal is output to remind that external incoming materials can be stopped to enter the feeding hopper 100. Otherwise, when the stored garbage falls to be lower than the high material level, a high material level material-free signal is output, and the high material level material-free is displayed.

Meanwhile, a low level indicator 220 is arranged at the middle position inside the chute 200 connected with the feed hopper 100, the low level indicator 220 is connected with the controller 800, when the garbage storage position falls below the position, a low level material-free signal is output, and the alarm is given out to supplement fuel as soon as possible. Otherwise, when the stored garbage is higher than the low material level, a low material level material signal is output, and the low material level material is displayed.

The rack-breaking and bridge-erecting device 400 is provided with a rack-breaking and bridge-erecting switch 417 which is fixed on the upper end of the rear wall 120 of the feed hopper 100 and is connected with the controller 800, the rack-breaking and bridge-erecting switch is used as an initial position of the rack-breaking and bridge-erecting device 400 and mainly detects that the rack-breaking and bridge-erecting device 400 returns to the proper position, the rack-breaking and bridge-erecting device 400 returns to the proper position and outputs a signal to the controller 800, and the controller 800 controls the rack-breaking hydraulic cylinder 420 to stop oil supply. The frame breaking hydraulic cylinder 420 is also connected with a bridge breaking hydraulic drive reversing valve 422, and the bridge breaking hydraulic drive reversing valve 422 is connected with the controller 800.

The rack-breaking and bridging device 400 is provided with a rack-breaking and bridging-in switch 418, which is fixed in the middle of the rear wall 120 of the feed hopper 100 and mainly detects whether the rack-breaking and bridging device 400 is in place, and the rack-breaking and bridging-in switch 418 is electrically connected with the controller 800. After the frame-breaking bridge-erecting device 400 is in place, the frame-breaking frame-entering position switch 418 outputs a signal to the controller 800, and the controller 800 controls the frame-breaking hydraulic cylinder 420 to stop advancing oil supply.

The locking hydraulic cylinder 520 is connected to a locking hydraulically actuated directional control valve 580, and the locking hydraulically actuated directional control valve 580 is electrically connected to the controller 800. The locking hydraulic drive reversing valve 580, as the controller 800, receives that the locking device 500 is moved to the right position or moved back to the right position to stop the locking hydraulic cylinder 520 from supplying oil, the direction of the supplied oil is changed, the oil is supplied in the forward direction originally, and the oil is supplied in the backward direction after the direction is changed, or vice versa.

The isolation door 610 of the sealing isolation device 600 is provided with an opening switch 230 and a closing switch 240, and the opening switch 230 and the closing switch 240 are electrically connected to the controller 800. The sealed hydraulic cylinder 640 is also connected to a sealed hydraulically actuated directional valve 650, and the sealed hydraulically actuated directional valve 650 is electrically connected to the controller 800.

The opening switch 230 is used as an initial position of the isolation door 610, mainly detects that the isolation door 610 completely opens the connection channel between the feed hopper 100 and the chute 200, and outputs a signal (an opening signal of the isolation door 610) to the controller 800 to stop the oil supply of the sealing hydraulic cylinder 640.

The switch 240 is closed, the isolation door 610 is mainly detected to completely close the connection passage between the feed hopper 100 and the chute 200, and a signal (the isolation door 610 closing signal) is output to the controller 800 to stop the oil supply of the sealing hydraulic cylinder 640.

The sealing hydraulic drive reversing valve 650, as a hydraulic system, receives that the isolation door 610 is completely opened or closed, and after stopping oil supply, the direction of oil supply is changed, which is originally forward oil supply, and is backward oil supply after changing the direction, or vice versa.

The working principle of the invention is as follows:

whether the feed hopper 100 and the chute 200 are bridged or not is judged, and two conditions exist.

Firstly, the isolation door 610 is opened, and when the low level indicator 220 detects a material signal, the feed hopper 100 is not bridged; when the low level indicator 220 detects no material and the high level indicator 123 detects material, the bridge is judged to be a bridge, which is called a bridge signal; when the low level indicator 220 detects no material and the high level indicator 123 detects no material, the alarm is needed for feeding.

Secondly, the isolation door 610 is closed, and when the low level indicator 220 detects no material and the high level indicator 123 detects material, the bridge cannot be determined.

Can be simply described as: the isolation gate 610 opens a signal + the low level indicator 220 has no material signal + the high level indicator 123 has a material signal, i.e., a bridging signal. The low level indicator 220 has a material signal and the bridging signal is removed.

A control method for starting a broken bridge.

First, if a bridging signal occurs, and at this time, there are a signal indicating that the bridging device 400 has retreated to the position and a signal indicating that the locking device 500 has advanced to the position, the locking device 500 needs to be first activated to unlock until the signal indicating that the locking device 500 has retreated to the position occurs.

Can be simply described as: the bridging signal + the bridge breaking device 400 retreats to the bit signal + the locking device 500 enters the bit signal, and the locking device 500 is started to unlock.

Secondly, when the locking device 500 enters the position signal and the sealing door opening signal exists, the bridging breaking device 400 starts to move downwards and inserts and extrudes the garbage at the bridging position until the bridging breaking device 400 enters the position signal, starts to retreat, and retreats to the position signal until the bridging breaking device 400 retreats, starts to advance again and again until the bridging signal is relieved.

Can be simply described as: the bridging signal, the locking device 500 retreating to the position signal and the sealing door opening signal, and the bridging breaking device 400 starts the bridge breaking until the bridging signal is removed.

Thirdly, after the bridging signal is released and the bridging breaking device 400 is withdrawn to the right position, the locking device 500 advances until the locking device 500 reaches the right position, and the surface bridging breaking device 400 is locked.

Can be simply described as: the non-bridging signal + the bridging device 400 retreats to the position signal, and the locking device 500 advances to lock the bridging device 400.

The seal separator 600 is closed requiring receipt of a lock 500 in-place signal.

In addition to automatic detection, a manually activated bridge-breaking device 400 may be provided in the event that the seal-isolating device 600 is opened.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (5)

1. The utility model provides a rubbish charge-in system with sealed isolating device which characterized in that: the feeding hopper (100), the chute (200) and the feeder (300) are sequentially arranged from top to bottom, the upper end of the chute (200) is fixedly connected with the bottom of the feeding hopper (100), a sealing and isolating device (600) is arranged at the joint of the feeding hopper (100) and the chute (200), the sealing and isolating device (600) comprises a rotatable isolating door (610), the isolating door (610) is positioned in the chute (200) at the joint of the feeding hopper (100) and the chute (200), the isolating door (610) can completely cover the joint of the feeding hopper (100) and the chute (200), the rear end of the isolating door (610) is fixed on a swinging shaft (620), two ends of the swinging shaft (620) penetrate through the chute (200) respectively and then are fixedly connected with one end of a swinging arm (630), the other end of the swinging arm (630) is hinged with a telescopic end of a sealing hydraulic cylinder (640), the base of the sealing hydraulic cylinder (640) is fixed on the side wall of the chute (200) through a fixing seat, the base of sealed pneumatic cylinder (640) is articulated with the fixing base, and the flexible swing of driving swing arm (630) of sealed pneumatic cylinder (640), the angle of wobbling just in time accords with the angle that sealing door opened.

2. A waste feeding system with a sealing and isolating device according to claim 1, characterized in that: a sealing door space (210) for accommodating a sealing door is arranged at the inner rear side of the chute (200).

3. A waste feeding system with a sealing and isolating device according to claim 1, characterized in that: when the isolation door (610) is fully open, the isolation door (610) is in a vertical plane with the rear side wall of the chute (200).

4. A waste feeding system with a sealing and isolating device according to claim 1, characterized in that: the feed hopper (100) adopts an inverted bell-mouthed structure.

5. A waste feeding system with a sealing and isolating device according to claim 1, characterized in that: the sealing hydraulic cylinder (640) is connected with the controller (800).

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