A waste incinerator and a leachate collection system thereof

Abstract

This invention discloses a waste incinerator and its leachate collection system. The leachate collection system includes: a first chamber, a baffle device, and a squeezing device. The first chamber is located on one side of the waste incinerator hopper and communicates with the hopper's throat channel. The baffle device is located in the throat channel and is used to close the throat channel, blocking the waste falling into the hopper. The squeezing device is located in the hopper and is used to first push the waste in the throat channel into the first chamber, then squeeze the leachate out of the waste in the first chamber, and then push the waste back into the throat channel. The first chamber has a leachate collection port. The baffle device is also used to open the throat channel to allow the waste pushed back into the throat channel to fall. This solution can effectively control the leachate content in the waste, prevent leachate from entering the grate system with the waste, reduce its corrosion of the pusher and grate, and reduce the risk of ash blockage or fire in the ash hopper under the grate.

Description

Technical Field

[0001] This invention relates to the field of waste incinerator technology, and in particular to a waste incinerator and its leachate collection system. Background Technology

[0002] Due to the characteristics of the mechanical grate in waste incinerators, the waste entering the furnace does not require sorting or screening. Domestic waste in China has a complex composition and high moisture content, resulting in a generally high water content in the waste entering the furnace, especially in coastal cities, where leachate content is also high. A large amount of leachate enters the furnace. Typically, a leachate collection device is installed below the pusher. The leachate flows into the collection device through the drainage channels and holes on the pusher. Because the leachate is quite viscous, it is not easy for it to completely enter the collection device. Most of the leachate will enter the mechanical grate with the waste. When the leachate flows into the grate, it severely corrodes the grate equipment, affecting its use. Furthermore, the leachate is prone to coking at high temperatures and adhering to the grate structure, affecting the operation of the equipment. In severe cases, it can easily cause ash blockage or even fire in the ash hopper below the grate, affecting the overall operation of the incinerator. Summary of the Invention

[0003] In view of this, the present invention provides a leachate collection system for a waste incinerator hopper, which can effectively control the leachate content in the waste, prevent leachate from entering the grate system with the waste, reduce its corrosion on the pusher and grate, and reduce the risk of ash blockage or fire in the ash hopper under the grate.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A leachate collection system for a waste incinerator hopper includes: a first chamber, a baffle device, and a squeezing device;

[0006] The first compartment is designed to be located on one side of the waste incinerator hopper and is connected to the throat passage of the hopper.

[0007] The material blocking device is used to be installed in the throat channel and to close the throat channel so that the garbage falling into the hopper is blocked in the throat channel;

[0008] The extrusion device is installed in the hopper and is used to first push the garbage blocked in the throat channel into the first compartment, then extrude leachate from the garbage pushed into the first compartment, and then push the garbage with leachate extruded back into the throat channel; the first compartment is provided with a leachate collection port; the baffle device is also used to open the throat channel to allow the garbage pushed back into the throat channel to fall.

[0009] Preferably, the extrusion device includes: a first pushing mechanism and a second pushing mechanism;

[0010] The second pushing mechanism is disposed on the side wall of the throat channel and is used to push the garbage blocked in the throat channel into the first compartment;

[0011] The first pushing mechanism is disposed in the first compartment and is used to move in the opposite direction to the second pushing mechanism to squeeze out leachate from the waste pushed into the first compartment, and to push the waste with leachate squeezed out back into the throat channel.

[0012] Preferably, it also includes a second compartment;

[0013] The second compartment is located on the other side of the hopper and communicates with the throat channel; the second compartment is distributed opposite to the first compartment.

[0014] The second pushing mechanism is disposed in the second chamber, and its second pushing end can reciprocate between the second chamber and the throat channel; the first pushing end of the first pushing mechanism can reciprocate at least within the first chamber; the direction of movement of the first pushing end of the first pushing mechanism is the same as the direction of movement of the second pushing end of the second pushing mechanism.

[0015] Preferably, the first pushing mechanism includes: a first pushing gate and a first driving mechanism;

[0016] The first push gate serves as the first push end and can reciprocate within the first compartment at least; the first drive mechanism is disposed in the first compartment and is used at least to drive the first push gate to reciprocate within the first compartment.

[0017] The second pushing mechanism includes: a second pushing gate and a second driving mechanism;

[0018] The second push gate serves as the second push end and can reciprocate between the second chamber and the throat channel; the second drive mechanism is disposed in the second chamber and is used to drive the second push gate to reciprocate between the second chamber and the throat channel.

[0019] Preferably, the second compartment is a second square compartment; the second push door is a [-shaped door], and its outer shape matches the inner shape of the second square compartment, and the size of its upper wall is used to match the size of the throat channel cross-section; the movable end of the second drive mechanism is connected to the inner wall side of the [-shaped door].

[0020] Preferably, the bottom of the first compartment is provided with a first track along a first direction; the bottom of the first push door is provided with a first groove for cooperating with the first track; the first direction is parallel to the relative directions of the first compartment and the second compartment;

[0021] And / or, the bottom of the second compartment is provided with a second track along the first direction; the bottom of the second push door is provided with a second groove for cooperating with the second track.

[0022] Preferably, the bottom of the first chamber is an open structure and serves as the leachate collection port;

[0023] The first track is positioned across the inner side of the leachate collection port;

[0024] The leachate collection system on the waste incinerator hopper equipment also includes: a grid plate;

[0025] The grid plate is disposed on the outside of the leachate collection port.

[0026] Preferably, the material blocking device includes: a material blocking gate and a third drive mechanism;

[0027] One end of the baffle door is rotatably mounted on the side wall of the throat channel and has a switchable closed and open posture. In the closed posture, the baffle door rotates to a horizontal position to block the throat channel. In the open posture, the baffle door rotates downward to a vertical position to open the throat channel. When the baffle door is in the closed posture, it is flush with the bottom of the first compartment.

[0028] The third drive mechanism is disposed in the hopper and is used to drive the baffle gate to switch back and forth between the closed posture and the open posture.

[0029] Preferably, it also includes a cleaning device;

[0030] The cleaning device is located inside the first chamber.

[0031] A waste incinerator further includes: a leachate collection system on the waste incinerator hopper equipment as described above.

[0032] As can be seen from the above technical solution, the leachate collection system on the waste incinerator hopper equipment provided by the present invention has the following beneficial effects:

[0033] 1. Effectively control the leachate content in the waste to prevent leachate from entering the grate system with the waste, which can reduce its corrosion on the pusher and grate, and also reduce the risk of slag blockage or fire in the ash hopper under the grate.

[0034] 2. Arranged in the municipal solid waste incineration system, it conforms to the characteristic of the mechanical grate of the waste incinerator that the waste does not undergo pretreatment, thus forming a system from waste feeding, feeding, solid-liquid separation and incineration;

[0035] 3. The calorific value of the waste after solid-liquid separation can be controlled, so that subsequent combustion can reach the most suitable state.

[0036] The present invention also provides a waste incinerator, which has corresponding beneficial effects due to the use of the leachate collection system on the waste incinerator hopper equipment described above. For details, please refer to the previous description, which will not be repeated here. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a front view of the normally open state of the hopper leachate collection system provided in an embodiment of the present invention;

[0039] Figure 2 This is a front view of the hopper leachate collection system provided in an embodiment of the present invention after the two push gates have been moved;

[0040] Figure 3 This is a front view of the hopper leachate collection system under compression conditions provided in an embodiment of the present invention;

[0041] Figure 4 This is a front view of the first push gate of the hopper leachate collection system provided in an embodiment of the present invention;

[0042] Figure 5 This is a front view of the second push gate of the hopper leachate collection system provided in an embodiment of the present invention;

[0043] Figure 6 This is a right view of the first push gate of the hopper leachate collection system provided in an embodiment of the present invention;

[0044] Figure 7 A plan view of the first track in the first compartment provided for an embodiment of the present invention;

[0045] Figure 8 A plan view of the second track in the second compartment provided in an embodiment of the present invention;

[0046] Figure 9 This is a right view of the hopper leachate collection system provided in an embodiment of the present invention;

[0047] Figure 10 This is a front view of the hopper leachate collection system provided in an embodiment of the present invention.

[0048] Among them, 1 is a hopper, 11 is a throat channel, 2 is a pusher, 3 is a mechanical grate, 101 is a first push gate, 102 is a second push gate, 103 is a baffle gate, 104 is a cleaning device, 105 is a first chamber, 106 is a grid plate, 107 is a leachate collection hopper, 108 is a second hydraulic cylinder fixing bracket, 109 is a third hydraulic cylinder fixing bracket, 110 is a first track, 111 is a second track, 112 is a second chamber, 113 is a first hydraulic cylinder, 114 is a second hydraulic cylinder, 201 is a first chute, 1031 is a fixing pin, and 1032 is a third hydraulic cylinder. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] The leachate collection system on the waste incinerator hopper equipment provided in this embodiment of the invention, such as... Figure 1 As shown, it includes: a first chamber 105, a baffle device, and a pressing device;

[0051] The first compartment 105 is installed on one side of the waste incinerator hopper 1 and is connected to the throat passage 11 of the hopper 1.

[0052] The material blocking device is used to be installed in the throat channel 11 and to close the throat channel 11 so that the garbage falling into the hopper 1 is blocked in the throat channel 11;

[0053] The squeezing device is at least installed in the hopper 1 and is used to first push the garbage blocked in the throat channel 11 into the first compartment 105, then squeeze the leachate out of the garbage pushed into the first compartment 105, and then push the garbage with the leachate squeezed out back into the throat channel 11; the first compartment 105 is provided with a leachate collection port; the blocking device is also used to open the throat channel 11 so that the garbage pushed back into the throat channel 11 falls.

[0054] It should be noted that, as Figure 1As shown, the first compartment 105 can be installed on the left side wall of the hopper 1 and is connected to the throat channel 11 of the hopper 1; wherein, the throat channel 11 is the narrow section of the hopper 1; the first compartment 105 is a compression chamber, which is a closed chamber formed by extending outward from the hopper body. Its exterior can be equipped with reinforcing ribs to stabilize the structure, and its interior can be made of wear-resistant and corrosion-resistant metal materials. It forms an integral whole with the hopper body, ensuring strength while making operation more convenient. In addition, the baffle device is used to block the throat channel 11 so that the garbage falling into the hopper 1 is blocked in the throat channel 11, that is, the garbage falling into the hopper 1 is blocked by the baffle device, so that the squeezing device can push the garbage blocked in the throat channel 11 into the first compartment 105. It is also used to open the throat channel 11 so that the garbage pushed back into the throat channel 11 falls onto the pusher 2. Furthermore, the leachate collection port of the first compartment 105 is used to connect to the leachate collection device so that the separated leachate can be collected separately. That is, the leachate separated by the squeezing device will flow into the leachate collection device through the leachate collection port. To better understand the leachate collection system on the waste incinerator hopper equipment of this solution, its working process is described as follows:

[0055] When waste falls into hopper 1, the throat channel 11 of hopper 1 is first closed by the baffle device so that the waste falling into hopper 1 is blocked in the throat channel 11 (i.e., located on the baffle device). Then, the waste blocked in the throat channel 11 is pushed into the first compartment 105 by the squeezing device. Then, the leachate is squeezed out of the waste pushed into the first compartment 105 by the squeezing device. The squeezed leachate flows into other leachate collection devices through the leachate collection port. Then, the waste with the squeezed leachate is pushed back into the throat channel 11 by the squeezing device. Finally, the throat channel 11 is opened by the baffle device so that the waste pushed back into the throat channel 11 falls onto the pusher 2 of the waste incinerator. The squeezed waste is loose after falling and is then pushed to the mechanical grate 3 by the pusher 2 for combustion.

[0056] In other words, this solution, based on the existing overall waste incinerator system, incorporates a leachate collection device in the hopper 1 of the waste incinerator. This allows for solid-liquid separation of waste falling into hopper 1 within the first compartment on one side. The leachate can be collected separately for subsequent processing in a dedicated leachate collection system, while the waste continues its original path into the incinerator for direct combustion. The compressed waste then enters the pusher 2 and mechanical grate 3 for further processing, while retaining the existing leachate collection hopper below the pusher 2. Essentially, this solution installs a leachate collection system on the hopper equipment of the waste incinerator, controlling (reducing) the leachate content (moisture content) before the waste enters the pusher 2 and furnace to control combustion efficiency. Subsequent modifications only require the addition of this leachate collection system to the hopper. Each waste-to-energy plant has different waste compositions and moisture content due to geographical differences. During operation, the incinerator needs to retain some moisture in the waste to prevent combustion on the feeder 2, which would affect the lifespan of the hopper 1. Therefore, a leachate collection hopper under the feeder 2 is necessary to collect residual moisture. Of course, this system primarily controls the moisture content of the waste, allowing various types of mechanical grates to adapt to different moisture levels during combustion, rather than completely squeezing out the waste. Therefore, it is necessary to retain the leachate collection hopper under the feeder 2 to collect residual leachate. In other words, the leachate collection system provided in this solution is not a pretreatment component independent of the waste incinerator system, but rather integrated into the incinerator system. This allows for solid-liquid separation in the hopper, with the separated leachate collected separately, while the solid waste can continue to be processed along its original route.

[0057] As can be seen from the above technical solutions, the leachate collection system on the waste incinerator hopper equipment provided in this embodiment of the invention has the following beneficial effects:

[0058] 1. Effectively control the leachate content in the waste to prevent leachate from entering the grate system with the waste, which can reduce its corrosion on the pusher and grate, and also reduce the risk of slag blockage or fire in the ash hopper under the grate.

[0059] 2. Arranged in the municipal solid waste incineration system, it conforms to the characteristic of the mechanical grate of the waste incinerator that the waste does not undergo pretreatment, thus forming a system from waste feeding, feeding, solid-liquid separation and incineration;

[0060] 3. The calorific value of the waste after solid-liquid separation can be controlled, so that subsequent combustion can reach the most suitable state.

[0061] In this scheme, the extrusion device includes: a first pushing mechanism and a second pushing mechanism;

[0062] The second pushing mechanism is installed on the side wall of the throat channel 11 and is used to push the garbage blocked in the throat channel 11 into the first compartment 105; wherein, the second pushing mechanism can be installed on the right side wall of the throat channel 11.

[0063] The first pushing mechanism is located within the first compartment 105 and is used to move in the opposite direction to the second pushing mechanism to squeeze out leachate from the waste pushed into the first compartment 105, and to push the waste with squeezed leachate back into the throat channel 11. The first and second pushing mechanisms are arranged opposite each other, and their pushing ends can move individually or simultaneously in opposite directions, making it easier to squeeze waste within the first compartment and to facilitate the back-and-forth transfer between the throat channel 11 and the first compartment.

[0064] Specifically, such as Figure 3 As shown, the leachate collection system on the waste incinerator hopper equipment provided in this embodiment of the invention also includes a second compartment 112;

[0065] The second compartment 112 is located on the other side of the hopper 1 and is connected to the throat passage 11. The second compartment 112 is distributed opposite to the first compartment 105. The second compartment 112 can be located on the right side wall of the hopper 1 so that it is distributed opposite to the first compartment 105.

[0066] like Figure 1 As shown, the second pushing mechanism is disposed in the second compartment 112, and its second pushing end can reciprocate between the second compartment 112 and the throat channel 11, so that the second pushing end of the second pushing mechanism can push the garbage blocked in the throat channel 11 into the first compartment 105; the first pushing end of the first pushing mechanism can reciprocate at least within the first compartment 105, and the movement direction of the first pushing end of the first pushing mechanism is the same as the movement direction of the second pushing end of the second pushing mechanism, so that the first pushing end of the first pushing mechanism can move towards the second pushing mechanism, so as to squeeze out leachate from the garbage pushed into the first compartment 105, and to push the garbage that has squeezed out leachate back into the throat channel 11. The first compartment 105 serves as the storage compartment for the first pushing mechanism, and the second compartment 112 serves as the storage compartment for the second pushing mechanism. In the initial stage, the two pushing mechanisms are stored in their respective storage compartments. In particular, the pushing end of the second pushing mechanism needs to be flush with the hopper wall of the throat channel 11 to avoid affecting the falling of garbage.

[0067] Furthermore, such as Figure 1 As shown, the first pushing mechanism includes: a first pushing gate 101 and a first driving mechanism;

[0068] The first push gate 101 serves as the first push end and can reciprocate at least within the first compartment 105; the first drive mechanism is disposed in the first compartment 105 and is used at least to drive the first push gate 101 to reciprocate within the first compartment 105; wherein, as Figure 4 As shown, the first drive mechanism can preferably be a first hydraulic cylinder 113, which is disposed through the left side wall of the first compartment 105, and its movable end is connected to the first push door 101, that is, it is at least used to push the first push door 101 to move back and forth in the first compartment 105; of course, the first hydraulic cylinder 113 is also used to push the first push door 101 to move back and forth in the first compartment 105 and the throat channel 11; in addition, the outer shape of the first push door 101 matches the inner shape of the first compartment 105.

[0069] The second pushing mechanism includes: a second pushing gate 102 and a second drive mechanism;

[0070] The second push gate 102 serves as the second push end and can reciprocate between the second compartment 112 and the throat channel 11; the second drive mechanism is located in the second compartment 112 and is used to drive the second push gate 102 to reciprocate between the second compartment 112 and the throat channel 11. Wherein, for example... Figure 5 As shown, the second driving mechanism can preferably be a second hydraulic cylinder 114, which is installed through the right side wall of the second chamber 112, and its movable end is connected to the second push gate 102, that is, it is used to push the second push gate 102 to reciprocate left and right in the second chamber 112 and the throat channel 11; of course, the outer shape of the second push gate 102 matches the inner shape of the second chamber 112. That is to say, each push mechanism in this solution uses a hydraulic push rod to drive the push gate to reciprocate, which has the characteristics of simple structure and convenient material pushing or extrusion.

[0071] Furthermore, the second compartment 112 is a second rectangular compartment; such as Figure 5 As shown, the second push gate 102 is a [-shaped gate], and its outer shape matches the inner shape of the second square compartment so that the outer surface of the [-shaped gate] contacts and fits the inner surface of the second square compartment. The dimensions of the upper wall of the [-shaped gate] are matched with the dimensions of the cross-section of the throat passage 11. The movable end of the second drive mechanism is connected to the inner wall of the [-shaped gate]. The second push gate 102 is a [-shaped gate] (i.e., a [-shaped box-shaped gate]), which is formed by an upper wall, lower wall, left side wall, front side wall, and rear side wall. The length and width dimensions of the upper wall of the [-shaped gate] are the same as the length and width dimensions of the cross-section of the throat passage 11. Thus, when the [-shaped gate] is pushed into the throat passage 11 by the second drive mechanism, its upper wall blocks the debris above the throat passage 11, acting as a bridging and breaking mechanism. The movable end of the second drive mechanism is connected to the inner wall of the left side wall of the [-shaped gate]. Furthermore, as... Figure 9As shown, the second push gate 102 is composed of several parallel [type gate ([type box frame] unit) units. Correspondingly, the second drive mechanism is composed of several first hydraulic cylinders 113. The several first hydraulic cylinders 113 are respectively installed through the right side wall of the second compartment 112, and are used to drive the several [type gate units] to reciprocate left and right.

[0072] In addition, such as Figure 3 As shown, the first compartment 105 is the first rectangular compartment; as Figure 4 As shown, the first push door 101 is a box-shaped door (the longitudinal section of the box-shaped door is U-shaped), and its outer shape matches the inner shape of the first square compartment, so that the outer surface of the box-shaped door contacts and fits with the inner surface of the first square compartment; the movable end of the first drive mechanism passes through and connects to the inner wall side (right side wall) of the box-shaped door. The overall thickness of this box-shaped door is smaller than that of the second push door 102, thus occupying less internal space in the first compartment 105. Of course, the first push door 101 can also be an I-shaped door; the way this I-shaped door fits with the first square compartment and the way it connects with the movable end of the first drive mechanism are the same as above, and will not be repeated here.

[0073] In this plan, such as Figure 7 As shown, the bottom of the first compartment 105 is provided with a first track 110 along a first direction; as Figure 6 As shown, the bottom of the first push gate 101 is provided with a first groove 201 for cooperating with the first track 110; the first direction is parallel to the relative direction of the first compartment 105 and the second compartment 112; that is, the first direction is parallel to the driving direction of the first drive mechanism; wherein, there are four first tracks 110, which are arranged in parallel at the bottom of the first compartment 105; there are also four first grooves 201, which are used to cooperate with the four first tracks 110 one by one;

[0074] And / or, such as Figure 8 As shown, the bottom of the second compartment 112 is provided with a second track 111 along the first direction; the bottom of the second push gate 102 is provided with a second groove for cooperating with the second track 111. There are four second tracks 111, arranged in parallel at the bottom of the second compartment 112; there are also four second grooves, each corresponding to one of the four second tracks 111. This design helps improve the guidance and stability of the push gate's reciprocating motion.

[0075] Specifically, the bottom of the first compartment 105 has an open structure and serves as a leachate collection port;

[0076] The first track 110 is positioned across the inside of the leachate collection port;

[0077] like Figure 2 As shown, the leachate collection system on the waste incinerator hopper equipment also includes: a grid plate 106;

[0078] The grid plate 106 is located on the outside of the leachate collection inlet to prevent large pieces of waste from directly entering the leachate collection device. As mentioned above, there are four first tracks 110. Figure 7 As shown, four first tracks 110 are arranged in parallel across the inner side of the leachate collection port; there are also multiple grid plates 106, which are respectively arranged between two adjacent first tracks 110, or between the first track 110 and the edge of the leachate collection port.

[0079] Furthermore, such as Figure 1 As shown, the material blocking device includes: a material blocking gate 103 and a third drive mechanism;

[0080] One end of the baffle gate 103 is rotatably mounted on the side wall of the throat channel 11 and has a switchable closed and open posture. In the closed posture, the baffle gate 103 rotates to a horizontal position to block the throat channel 11. In the open posture, the baffle gate 103 rotates downward to a vertical position to open the throat channel 11. When the baffle gate 103 is in the closed posture, it is flush with the bottom of the first compartment 105, ensuring that the second pushing mechanism can completely push the garbage blocked in the throat channel 11 into the first compartment 105 and avoid the existence of dead corners for garbage to be pushed in.

[0081] The third drive mechanism is installed in the hopper 1 and is used to drive the baffle gate 103 to switch back and forth between a closed and an open position. That is, the third drive mechanism drives the baffle gate 103 to perform a flipping motion, so that the baffle gate 103 switches back and forth between a closed and an open position. For example... Figure 10 As shown, one end of the baffle gate 103 is rotatably mounted on the side wall of the throat channel 11 via a fixed pin 1031, meaning the baffle gate 103 can rotate around the fixed pin 1031. The third drive mechanism is preferably a third hydraulic cylinder 1032, mounted on the hopper 1 via a third hydraulic cylinder mounting bracket 109. The movable end of the third hydraulic cylinder 1032 is rotatably connected to the center of the bottom of the baffle gate 103, and the fixed end is rotatably connected to the third hydraulic cylinder mounting bracket 109. Thus, by extending and retracting the third hydraulic cylinder 1032, the baffle gate 103 can rotate up and down or swing, and can swing to a horizontal position to block the hopper channel and close it. Figure 3 As shown, it can be swung to a vertical position at its lowest point to open the hopper channel, thus putting it in an open state. Figure 1 As shown; the tilting trajectory of the stop gate 103 is as follows Figure 10 As shown.

[0082] In addition, such as Figure 9As shown, the material gate 103 is composed of several parallel material gate units. One end of each material gate unit is rotatably mounted on the side wall of the throat channel 11 via a fixed pin 1031. The third drive mechanism is composed of several third hydraulic cylinders 1032. Each third hydraulic cylinder 1032 is mounted on the hopper body and is used to drive the corresponding material gate unit to rotate up and down.

[0083] Of course, the leachate collection system on the waste incinerator hopper equipment provided in this solution can also effectively control the amount of waste fed into the furnace at one time, and the waste falling on the pusher 2 is more even and easier to control combustion.

[0084] Furthermore, such as Figure 1 As shown, the leachate collection system on the waste incinerator hopper equipment provided in this embodiment of the invention also includes a cleaning device 104;

[0085] A cleaning device 104 is installed at the top of the first compartment 105. Water is sprayed out through a specific water outlet to achieve a flushing effect and clean the first compartment 105. In addition, to improve the cleaning effect of the first compartment 105, there are multiple cleaning devices 104, which are evenly distributed at the top of the first compartment 105. Correspondingly, multiple through holes are evenly opened at the top of the first compartment 105. The outer side of each through hole is used to connect a water inlet device, and the inner side is used to install a water outlet (such as a shower head) flush with the top wall of the first compartment.

[0086] In other words, this scheme has a first compartment (squeezing compartment) connected to one side of the throat channel 11 of hopper 1. A cleaning device 104 is provided at the top of the first compartment, and a leachate collection port and a grid plate 106 are provided at the bottom. A first pushing mechanism is provided in the first compartment. In addition, a second compartment is provided on the other side of the throat channel 11 of hopper 1. The first compartment and the second compartment are distributed opposite to each other. A second pushing mechanism is provided in the second compartment. Furthermore, a baffle device is provided below the throat channel 11 to provide a working platform for the first compartment and to isolate hopper 1 from the incinerator. Moreover, the baffle device has a bridging function when it is opened and closed.

[0087] This invention also provides a waste incinerator, further comprising: a leachate collection system on the waste incinerator hopper as described above. Since this solution employs the aforementioned leachate collection system on the waste incinerator hopper, it possesses corresponding beneficial effects, as detailed above, and will not be repeated here.

[0088] The following is a further description of this solution with reference to specific embodiments:

[0089] A leachate collection system for a waste incinerator hopper device: Waste enters from the hopper opening and falls into the throat. At this point, the baffle door (i.e., baffle door 103, hereinafter the same) is horizontally closed, and the waste falls above the baffle door. The push door (i.e., the first push door 101, hereinafter the same) moves horizontally to the left along the first track 110 to the inside of the compression chamber (i.e., the first chamber 105, hereinafter the same), and then stops. The compression door (i.e., the second push door 102, hereinafter the same) moves to the left along the second track 111, pushing the waste completely above the grid plate 106 of the compression chamber. At this time, the push door moves to the right, forming a relative movement with the compression door. The waste is compressed in the middle, squeezing out the leachate through the grid plate 106 and flowing into the leachate collection port. The leachate collection port is used to connect to other leachate collection devices to complete the collection. After the garbage is squeezed, the squeezing gate moves to the right to the initial position. The squeezed garbage is pushed to the right by the pusher gate to the hopper channel above the baffle gate (i.e., throat channel 11, the same below). At this time, the baffle gate flips down and the garbage falls into the pusher 2 below the hopper channel. The squeezed garbage is loose after falling and is then pushed to the mechanical grate 3 by the pusher 2 for combustion.

[0090] A leachate collection system for a waste incinerator hopper includes a compression chamber located in the narrower part of the hopper (referred to as the hopper throat). A cleaning device is installed above the compression chamber, and a mesh plate and collection port are located below it. A push door is located on one side of the compression chamber, and a compression door is located on the opposite side. A flap door (i.e., a baffle door) is located below the hopper throat. This flap door provides a working platform for the compression chamber while also isolating the waste compartment from the incinerator. Furthermore, the flap door has a bridging function when opening and closing. When waste enters the hopper, it is compressed within the compression chamber by the compression door and push door, causing the leachate to flow into the collection port of the compression chamber. The compressed waste is then pushed into the hopper channel by the push door. Opening the baffle door allows the waste to fall directly onto the pusher and then into the grate for combustion.

[0091] The extrusion chamber extends from the hopper body and is located on the left side of the hopper. Reinforcing ribs can be installed on the exterior to stabilize the structure. The interior is lined with stainless steel or equivalent corrosion-resistant metal materials. A cleaning device 104 is installed at the top of the extrusion chamber, through which water is sprayed out via a specific sprinkler for a flushing effect. A first track 110 is laid on the bottom surface of the extrusion chamber, with small-mesh metal plates used between the tracks. Figure 7 As shown.

[0092] The extrusion chamber extends from the hopper body, forming a sealed compartment. The interior is lined with wear-resistant and corrosion-resistant metal materials, forming an integral whole with the hopper body to ensure strength while facilitating operation.

[0093] In addition, the cleaning device has several through holes in the upper part of the squeezing chamber, with a water inlet device connected to the outside and a water outlet connector flush with the side wall of the garbage chamber on the inside of the through holes.

[0094] In addition, the leachate collection port is equipped with a mesh plate with small holes to prevent large pieces of garbage from entering directly. A leachate collection hopper 107 is provided on the outside of the leachate collection port. The leachate collection hopper 107 has a large upper opening and a small lower opening, that is, the outlet gradually becomes smaller. The outlet is connected to the leachate collection device, and the mesh plate is arranged at the horizontal position of the upper opening of the leachate collection hopper 107.

[0095] The extrusion gate storage compartment (i.e., the second compartment 112, hereinafter the same) is located on the right side of the hopper. It is an independent, box-shaped structure that can completely house the extrusion gate. After being housed, the frontmost edge of the extrusion gate is at least flush with the hopper wall. A second track 111 is also provided on the bottom surface of the extrusion gate storage compartment. Figure 8 As shown.

[0096] The squeezing door is a "[" shaped box door ([-type door), consisting of a top surface, a bottom surface, a door surface, and two side surfaces. A second hydraulic cylinder is connected to the center of the inner side of the door surface, enabling repeated left-right translational movement. When the squeezing door is pushed out, its top surface blocks the waste above the throat, pushing the waste on the left side of the door surface into the squeezing chamber. The bottom surface has a second groove that fits the shape of the second track 111, allowing the squeezing door to slide on the second track 111. The width can be configured with one set of squeezing doors or two or more sets arranged side-by-side, depending on the width of the incinerator.

[0097] The extrusion gate, located on the opposite side of the extrusion chamber, consists of several sets of box-shaped frames and several sets of driving hydraulic cylinders. The hydraulic cylinders are fixed to one side of the hopper body, and the driving box-shaped frames are arranged inside the hopper. The hydraulic cylinders drive the box-shaped frames to perform reciprocating horizontal movements, pushing the waste into the extrusion chamber for extrusion.

[0098] The pusher door is located inside the extrusion chamber and is a "]"-shaped box door (]-shaped door), but its overall thickness is smaller than that of the extrusion door, so it does not occupy the internal space of the extrusion chamber. Similarly, the bottom surface of the pusher door is provided with a first sliding groove 201 that can fit with the first track 110. The center of the inner side wall of the pusher door is connected to a first hydraulic cylinder, which realizes the pusher door's left and right reciprocating motion on the first track 110. In the width direction, depending on the width of the incinerator, one set of extrusion doors or two or more sets of pusher doors can be selected to form a parallel arrangement opposite to the extrusion doors.

[0099] The push gate consists of several sets of push plates (i.e., individual push plate units) and several sets of driving hydraulic cylinders. The hydraulic cylinders are fixed to the hopper body, and the push plates are located inside the squeezing chamber. The hydraulic cylinders drive the push plates to reciprocate horizontally within the squeezing chamber, pushing the waste. The squeezing gate and the push gate run on specific tracks.

[0100] The top of the baffle gate is fixed and connected via a pin. A third hydraulic cylinder is located at the center of the bottom, allowing the baffle gate to swing up and down via its extension and retraction. It can swing to a horizontal position to close the hopper passage. Figure 3 As shown, it can swing down to the lowest position to open the hopper channel, such as... Figure 1 As shown.

[0101] The baffle gate consists of several baffles and several driving hydraulic cylinders. The hydraulic cylinders are fixed on the hopper body, the upper part of the baffle gate is fixed and can rotate around the fixed point, and the hydraulic cylinders are connected to the lower part of the baffle gate. Under the drive of the hydraulic cylinders, the baffle gate makes up-and-down flipping movements.

[0102] All surfaces of the device that come into direct contact with waste are made of corrosion-resistant metal.

[0103] In summary, the leachate collection system for the waste incinerator hopper provided by this invention includes a squeezing device, a baffle device, and two chambers for leachate collection. Three sets of door devices are installed in the narrower part of the hopper (collectively referred to as the throat). When the waste is located at the throat, the bottom baffle door blocks the waste, and the squeezing door on one side pushes the waste to the squeezing chamber on the other side of the hopper. A cleaning device is installed on the upper part of the squeezing chamber to wash away residual leachate. The push door on the other side of the squeezing chamber moves relative to the squeezing door, and the leachate in the waste is fully discharged through squeezing and collected to a designated collection device. Then, the push door on one side of the squeezing chamber pushes the waste back to the throat. After the baffle door is opened, the waste falls back into the incinerator for incineration. While the device is in operation, it also serves as a bridging and breaking system. The system can fully recover leachate from the waste and make more efficient use of the leachate; at the same time, it controls the moisture content of the waste, increases the calorific value of the waste, and makes combustion more complete, thereby improving energy conversion efficiency; it reduces the amount of leachate entering the incinerator, and also effectively protects the feeder and incinerator grate and other equipment, reduces corrosion and coking of other equipment due to leachate, and extends the service life of other equipment.

[0104] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0105] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A leachate collection system for a waste incinerator hopper, characterized in that, include: First compartment (105), baffle device and extrusion device; The first compartment (105) is used to be installed on one side of the waste incinerator hopper (1) and is connected to the throat channel (11) of the hopper (1); wherein, the first compartment (105) is a sealed compartment formed by extending outward from one side of the throat channel (11) of the hopper (1); The material blocking device is used to be installed in the throat channel (11) and to close the throat channel (11) so that the garbage falling into the hopper (1) is blocked in the throat channel (11); The extrusion device is installed in the hopper (1) and is used to first push the garbage blocked in the throat channel (11) into the first chamber (105), then extrude leachate from the garbage pushed into the first chamber (105), and then push the garbage with leachate extruded back into the throat channel (11); the first chamber (105) is provided with a leachate collection port; the baffle device is also used to open the throat channel (11) so that the garbage pushed back into the throat channel (11) falls onto the pusher (2) of the waste incinerator; The extrusion device includes: a first pushing mechanism and a second pushing mechanism; The second pushing mechanism is disposed on the side wall of the throat channel (11) and is used to push the garbage blocked in the throat channel (11) into the first compartment (105); The first pushing mechanism is disposed in the first compartment (105) and is used to move in the opposite direction to the second pushing mechanism to squeeze out leachate from the garbage pushed into the first compartment (105), and to push the garbage with leachate squeezed out back into the throat channel (11); The leachate collection system on the waste incinerator hopper equipment also includes a second compartment (112). The second compartment (112) is disposed on the other side of the hopper (1) and communicates with the throat channel (11). The second compartment (112) is distributed opposite to the first compartment (105). The second pushing mechanism is located in the second chamber (112), and its second pushing end can reciprocate between the second chamber (112) and the throat channel (11); the first pushing end of the first pushing mechanism can reciprocate at least within the first chamber (105); the direction of movement of the first pushing end of the first pushing mechanism is the same as the direction of movement of the second pushing end of the second pushing mechanism.

2. The leachate collection system on the waste incinerator hopper equipment according to claim 1, characterized in that, The first pushing mechanism includes: a first pushing gate (101) and a first driving mechanism; The first push gate (101) serves as the first push end and can reciprocate within the first compartment (105); the first drive mechanism is disposed in the first compartment (105) and is used at least to drive the first push gate (101) to reciprocate within the first compartment (105); The second pushing mechanism includes: a second pushing gate (102) and a second driving mechanism; The second push gate (102) serves as the second push end and can reciprocate between the second chamber (112) and the throat channel (11); the second drive mechanism is disposed in the second chamber (112) and is used to drive the second push gate (102) to reciprocate between the second chamber (112) and the throat channel (11).

3. The leachate collection system on the waste incinerator hopper equipment according to claim 2, characterized in that, The second compartment (112) is a second square compartment; the second push door (102) is a [-shaped door, and its outer shape matches the inner shape of the second square compartment, and the size of its upper wall is used to match the size of the cross-section of the throat channel (11); the movable end of the second drive mechanism is connected to the inner wall side of the [-shaped door].

4. The leachate collection system on the waste incinerator hopper equipment according to claim 2, characterized in that, The bottom of the first compartment (105) is provided with a first track (110) along a first direction; the bottom of the first push door (101) is provided with a first groove (201) for cooperating with the first track (110); the first direction is parallel to the relative direction of the first compartment (105) and the second compartment (112); And / or, the bottom of the second compartment (112) is provided with a second track (111) along the first direction; the bottom of the second push door (102) is provided with a second groove for cooperating with the second track (111).

5. The leachate collection system on the waste incinerator hopper equipment according to claim 4, characterized in that, The bottom of the first chamber (105) is an open structure and serves as the leachate collection port; The first track (110) is positioned across the inner side of the leachate collection port; The leachate collection system on the waste incinerator hopper equipment also includes: a grid plate (106). The grid plate (106) is disposed on the outside of the leachate collection port.

6. The leachate collection system on the waste incinerator hopper equipment according to claim 1, characterized in that, The material blocking device includes: a material blocking gate (103) and a third drive mechanism; One end of the baffle door (103) is rotatably mounted on the side wall of the throat channel (11) and has a switchable closed and open posture. In the closed posture, the baffle door (103) rotates to a horizontal position to block the throat channel (11). In the open posture, the baffle door (103) rotates downward to a vertical position to open the throat channel (11). When the baffle door (103) is in the closed posture, it is flush with the bottom of the first compartment (105). The third drive mechanism is disposed in the hopper (1) and is used to drive the baffle gate (103) to switch back and forth between the closed posture and the open posture.

7. The leachate collection system on the waste incinerator hopper equipment according to claim 1, characterized in that, It also includes a cleaning device (104); The cleaning device (104) is located inside the first chamber (105).

8. A waste incinerator, characterized in that, Also includes: The leachate collection system on the waste incinerator hopper equipment as described in any one of claims 1-7.

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