A waste compression apparatus and a control method thereof

Abstract

The application discloses a kind of garbage compression equipment and control method thereof, including garbage compression box, feed hopper, compression structure, garbage compression equipment further includes: hinged plate assembly, hinged plate assembly includes mounting seat, hinged plate oil cylinder, hinged plate, garbage compression box is in empty load state when hinged plate is flush with the bottom surface of garbage compression box;Compression structure includes a compression bin communicated with feed hopper, push plate oil cylinder movably installed in compression bin, push plate for compressing garbage is fixedly connected on push plate oil cylinder, the oil circuit of push plate oil cylinder is at least communicated with one pressure sensor, pressure sensor detects the pressure suffered by push plate when push plate compresses garbage and transmits pressure data to controller, the included angle between hinged plate and the bottom surface of garbage compression box is controlled by controller according to the data of pressure sensor, in the case of low cost without increasing the volume of box, make push plate not discontinuous and press garbage into box, as far as possible make garbage box fill with garbage, improve work efficiency, reduce worker labor intensity.

Description

Technical Field

[0001] This invention relates to a waste compression device, and more particularly to a waste compression device and its control method. Background Technology

[0002] Existing waste compression equipment mainly uses physical compression. External pressure reduces the gaps between various materials in the waste, thus decreasing the space occupied by these materials and increasing the waste's density. Currently, in domestic waste processing equipment, the process of compressing waste into the waste bin mainly involves: first, pouring the waste into the compression chamber; then, a pusher plate inside the chamber pushes the waste directly into the waste bin. The equipment primarily compresses and loads municipal solid waste. However, when the waste composition is complex, such as during major city cleanups, holidays, or rainy days, municipal solid waste and street garbage often contain large amounts of water, mud, sand, stones, and even small amounts of construction waste. In such cases, the mud, sand, construction waste, and branches are usually sorted out manually before the sorted waste is poured into the compression chamber, and then pushed directly into the waste bin by the pusher plate on the equipment. If garbage is poured directly into the compression chamber without manual sorting (or if the sorting is incomplete), the garbage will be denser and heavier than household waste because it contains some soil and sand. This makes the bottom of the container compacted, and once a certain amount of garbage is loaded, it becomes difficult to push the garbage upwards and stack it up (or for the middle of the garbage to arch up) through pressure, making it difficult to push in more garbage.

[0003] There are two existing solutions: one is to retract the pusher plate into the power compartment, empty the garbage from the container, and then refill it with garbage; the other is to increase the motor power and the pusher plate pressure to force the subsequent garbage in. This will significantly increase the overall cost of the container, because the increased thrust can easily cause deformation and damage to the container and the rear door, so the structure of the container and the rear door needs to be strengthened.

[0004] Therefore, this case aims to provide a garbage compression device and its control method. The purpose is to solve the problem of minimizing equipment downtime for loading and unloading when urban domestic waste and road garbage are mixed with some (or a small amount) of other garbage (such as mud, small stones, construction waste, etc.), increase the filling capacity of garbage bins, and, in the case of incomplete or inadequate garbage sorting, make the pusher plate continuously press the garbage into the bins at low cost (i.e. without increasing motor power) and without increasing the bin volume, so as to fill the garbage bins as much as possible, improve work efficiency, and reduce the labor intensity of workers. Summary of the Invention

[0005] This invention provides a waste compression device and its control method, which can effectively solve the above-mentioned problems.

[0006] This invention is implemented as follows:

[0007] A waste compression device includes a waste compression box for compressing waste, a feed hopper communicating with the waste compression box and for feeding waste, and a compression structure for pushing waste entering from the feed hopper into the waste compression box. The waste compression device further includes:

[0008] The bottom surface of the garbage compression box has a mounting hole, and a rocker assembly is provided on the mounting hole. The rocker assembly includes a mounting base located below the garbage compression box, a rocker cylinder movably mounted on the mounting base, a rocker hinged to one side of the output end of the rocker cylinder and closing the mounting hole when horizontal, and one end of the rocker hinged to the bottom of the inner side of the garbage compression box. When the garbage compression box is in an unloaded state, the rocker is flush with the bottom surface of the garbage compression box.

[0009] The compression structure includes a compression chamber communicating with the feed hopper, a push plate cylinder movably installed in the compression chamber, and a push plate fixed to the push plate cylinder for compressing waste. The oil circuit of the push plate cylinder is connected to at least one pressure sensor. The pressure sensor detects the pressure on the push plate when the push plate compresses the waste and transmits the pressure data to the controller. The rocker cylinder controls the angle between the rocker and the bottom surface of the waste compression box according to the data of the pressure sensor through the controller.

[0010] The power chamber is used to drive the push plate cylinder and the rocker cylinder.

[0011] As a further improvement, a baffle plate extending toward the push plate cylinder is fixed to the top of the push plate. The baffle plate is attached to the lower part of the power compartment, and when the push plate cylinder extends to its farthest point, part of the baffle plate is still located below the power compartment.

[0012] As a further improvement, the discharge end of the waste compression box is movably provided with a rear door, the bottom of the rear door near the waste compression box is a conical part, and an arc-shaped part is connected to the top of the conical part.

[0013] As a further improvement, an arc-shaped sealing plate is also included, with the inner arc surface of the sealing plate facing one side of the rocker and welded and fixed to the rocker. The outer arc surface of the sealing plate is movably attached to the bottom surface of the garbage compression box, and the sealing plate swings together with the rocker when it swings.

[0014] As a further improvement, a wastewater layer is provided at the bottom of the waste compression box, which is used to collect wastewater dripping from the gap between the sealing plate and the bottom of the waste compression box.

[0015] As a further improvement, the two sides of the sewage layer are respectively extended and fixed to the two sides of the garbage compression box, and a sealing cover is provided on both sides of the sewage layer. The sealing cover is opened when the garbage is compressed and closed when the garbage is transported and unloaded.

[0016] The present invention also provides a control method for a waste compression device, which, using the above-mentioned waste compression device, includes the following steps:

[0017] S1; The garbage is poured into the feed hopper and piled up at the front end of the push plate. The equipment is automatically started, and the push plate is pushed back and forth until there is no garbage in the feed hopper. The garbage is compressed from the entire area of ​​the compression structure into the garbage compression box and then automatically stops.

[0018] S2; After the garbage is compressed to the rear half of the garbage compression box, the garbage will continuously rise in height along the conical and arc-shaped parts of the rear door until the garbage piles up to the top of the rear half of the garbage compression box. The garbage at the top is pushed by the garbage behind and guided by the top flow, so that the garbage is squeezed from back to front and piled up from top to bottom.

[0019] S3; When the pressure sensor fails to detect an increase in pressure on the push plate at least twice, the pressure sensor transmits a signal to the controller, which then sends a signal to the drive end of the rocker cylinder, causing the rocker cylinder to lift the rocker plate. This causes the rocker plate to agitate the waste from the bottom, making the waste bulge upwards. This reduces the resistance between the waste and breaks the balance between the backward force of the push plate and the front-back force of the waste resistance. The push plate continues to be activated, and the waste tilts upwards and moves backwards, continuously increasing the height of the waste from the rear top of the waste compression box to the front top.

[0020] S4; When the garbage compactor reaches its capacity limit, the voice speaker in the garbage compactor will notify the staff that the garbage compactor is full, so that the staff can stop the compaction operation and carry out subsequent transportation and unloading work.

[0021] As a further improvement, S3 also includes: when the garbage continues to be pushed into the garbage compression box, a combined force will be generated, resulting in a new balance that causes the garbage to not be pushed into the garbage compression box. At this time, the rocker cylinder will be activated again to make the rocker lift up. This process is repeated multiple times until the rocker can no longer lift up and the garbage resistance can no longer be reduced. It is then determined that the garbage compression box is full and a signal is sent to the controller.

[0022] The beneficial effects of this invention are:

[0023] During the normal garbage compression stage, the pusher plate, driven by the hydraulic cylinder, compresses the garbage. However, if the garbage is not of a single type, such as containing a certain amount of soil, sand, gravel, and construction waste—items with a higher density—the pushing force of the pusher plate needs to be significantly increased to continuously push the garbage into the compression box. As the garbage accumulates to a certain amount, its high density makes it increasingly difficult for it to turn upwards under gravity. This is especially true when the garbage piles up to the top, where the compaction becomes even more pronounced, making it difficult for the pusher plate to continue pushing the remaining garbage into the compression box. Forcing it not only risks damaging the hydraulic cylinder itself but can also damage the box body and rear door. Therefore:

[0024] This invention proposes installing a pressure sensor in the hydraulic circuit of the pusher cylinder of the driven pusher plate. The pressure sensor monitors the pusher cylinder. When the pusher cylinder can push the waste, the pressure sensor continuously monitors the increase in thrust. When the thrust of the pusher cylinder does not increase at least twice, that is, when the thrust is at its maximum, the hydraulic system reaches the overflow value. At this time, the pressure sensor determines that the resistance of the waste in the waste compression box is balanced with the thrust of the pusher cylinder. The pressure sensor then sends a signal to the controller, which in turn sends a signal to the solenoid valve of the rocker cylinder. The solenoid valve of the rocker cylinder instructs the rocker cylinder to lift the rocker plate. The raised rocker disrupts the balance between the pushing force of the pusher plate and the resistance of the garbage, allowing the pusher plate to continue pushing the garbage in. This effectively solves the problem of difficult garbage pushing without changing the overall structure. After the garbage enters the container, it changes the garbage's stacking position and movement direction: firstly, by setting the installation position of the rocker, the garbage stacking position is changed; secondly, by changing the different angles of the rocker's tilt, the movement direction of the garbage is changed. By changing the movement direction of the garbage, the front and back distribution of the garbage is changed, making the garbage more evenly and rationally distributed in the container, while also improving work efficiency and avoiding damage to local structures.

[0025] Existing garbage compactors are often made into square structures to reduce costs and manufacturing difficulties. However, the square structure and tailgate are not conducive to increasing the height of garbage. Garbage can easily become uncompressible before it reaches the rated height. Therefore, this invention proposes a unique tailgate with a conical bottom, allowing garbage to climb along the conical section. After passing through the conical section, the garbage is guided by the arc section to accumulate at the top of the garbage compactor. This continuously guides the garbage to the top of the compactor, making it easier to fill to full capacity and making better use of the compactor's space.

[0026] While using a rocker arm can alter the balance between waste items, thereby increasing the compression volume, the change in the rocker arm's level also creates a gap in the previously tightly sealed waste compression box. This not only makes it easy for wastewater to leak out during waste compression, but in severe cases, it can even lead to waste leakage, causing odors to overflow from the waste compression box, and disrupting the balance between waste items, providing an outlet for waste. To address this, this invention further proposes to install a combined sealing plate on three sides of the rocker arm, and weld the sealing plate to the rocker arm. Whether the rocker arm is tilted up or down, it remains in close contact with the bottom surface of the waste compression box, thereby preventing a large amount of waste and wastewater from flowing out of the waste compression box. This method restricts the flow of waste and wastewater to a certain extent without affecting the rocker arm.

[0027] The rocker arm and the curved sealing plate are welded together, but the sealing plate is also movable, so there will inevitably be some gaps between it and the bottom of the garbage compression box, which will cause some sewage to leak down. There is a sewage layer under the rocker arm, and the rocker arm cylinder and sewage are in the same space. As the rocker arm moves up and down, it will inevitably carry a small amount of garbage into the sewage layer. There is an elongated hole on each of the left and right sides of the sewage layer. A sealing cap is installed on the outside of the elongated hole. One side can be used to flush in clean water, and the other side is used for sewage and garbage to flow out. The opening on both sides facilitates the cleaning of the sewage layer. During operation, the sealing caps on both sides of the sewage layer are open. When the pusher plate is pushing, sewage will drip down and flow directly out from the side of the sewage layer.

[0028] When the trash can is not in operation or during transportation, the openings on both sides of the sewage layer are closed. Even if sewage leaks from inside the trash can during transportation, the leaked sewage will be stored in the sewage layer and will not leak directly into the external environment, thus not affecting the external environment.

[0029] During the pushing and retraction process of the pusher cylinder, the material falling from the feed hopper is likely to fall into the pusher cylinder, affecting the retraction process. Therefore, this invention provides a baffle plate on the pusher plate. During the pushing process, the waste falling from the feed hopper will fall onto the baffle plate. After the pusher cylinder retracts, the baffle plate retracts to the bottom of the power chamber, and the waste falling onto it will be blocked by the outer shell of the power chamber and fall onto the front end of the pusher plate. This allows the waste to be compressed towards the waste compression box after the pusher plate is pushed out again, thus avoiding affecting the normal function of the compression structure. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the unloaded structure (first state) of a waste compression device according to the present invention.

[0032] Figure 2 This is a schematic diagram of the loading structure (second state) of a waste compression device according to the present invention.

[0033] Figure 3 This is an enlarged structural schematic diagram of a waste compression device according to the present invention.

[0034] Figure 4 This is a schematic diagram of a funnel tube and a water sensor in Embodiment 2 of the present invention.

[0035] Figure 5 This is an electrical schematic diagram of a control method for a waste compression device according to the present invention.

[0036] Figure 6 This is a schematic diagram illustrating the changes in pressure of the push plate and the movement of the rocker in this invention. Detailed Implementation

[0037] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] Example 1

[0040] Reference Figures 1-6 As shown, a waste compression device includes a waste compression box 10 for compressing waste, a feed hopper 20 communicating with the waste compression box 10 for feeding waste, and a compression structure 30 for pushing the waste entering the feed hopper 20 into the waste compression box 10. The waste compression device further includes: a mounting hole on the bottom surface of the waste compression box 10, a rocker assembly 40 disposed on the mounting hole, the rocker assembly 40 including a mounting base 41 located below the waste compression box 10, a rocker cylinder 42 movably mounted on the mounting base 41, and a rocker 43 hinged to the output end of the rocker cylinder 42 and closing the mounting hole in the bottom plate. One end of the rocker 43 is hinged to the bottom of the inner side of the waste compression box 10. When the garbage compression box 10 is in an unloaded state, the rocker plate 43 is flush with the bottom surface of the garbage compression box 10; the compression structure 30 includes a compression chamber 31 communicating with the feed hopper 20, a pusher cylinder 32 movably installed in the compression chamber 31, and a pusher plate 33 fixed to the pusher cylinder 32 for compressing garbage. The oil circuit of the pusher cylinder 32 is connected to at least one pressure sensor 34. The pressure sensor 34 detects the pressure on the pusher plate 33 when the pusher plate 33 compresses the garbage and transmits the pressure data to the controller. The rocker cylinder 42 controls the angle between the rocker plate 43 and the bottom plate of the garbage compression box according to the data of the pressure sensor 34 through the controller; and a power chamber 90 is used to drive the pusher cylinder 32 and the rocker cylinder 42.

[0041] In this embodiment, the power compartment 90 includes a motor, an electrical control box, a hydraulic oil tank, an oil pump, an integrated block, a radiator, etc.

[0042] The garbage compression process in this embodiment is as follows: the garbage transfer vehicle is fed into the funnel-shaped feed hopper 20, the garbage comes into the compression chamber 31 along the feed hopper 20, and then the garbage is pushed into the garbage compression box 10 by the push plate 33.

[0043] In practical use, the position of the rocker assembly 40 can be adjusted adaptively. The number of rocker assemblies 40 can be determined according to the length and size of the garbage bin. Only one set can be set, or multiple sets can be set at the same time. Preferably, the setting angle of the rocker assembly 40 can also be changed. For example, depending on the composition of the garbage, the contact angle between the rocker 43 in the rocker assembly 40 and the bottom of the garbage compression bin 10 can be changed to an inclined contact.

[0044] During the normal garbage compression stage, the pusher plate 33 is driven by the pusher cylinder 32 to compress the garbage. However, if the garbage is not of a single type, such as if it contains a certain amount of soil, sand, gravel, and construction waste with a high density, the pushing force of the pusher plate 33 needs to be significantly increased to continuously push the garbage into the garbage compression box 10. When the garbage accumulates to a certain amount, due to its high density, it becomes increasingly difficult for the garbage to turn upwards under the influence of gravity. Especially when the garbage accumulates to the top, the garbage is compressed more firmly, making it difficult for the pusher plate 33 to continue pushing the garbage into the garbage compression box 10. Forcing it not only easily damages the cylinder itself but may also damage the box body. Therefore:

[0045] This invention proposes to install a pressure sensor 34 in the oil circuit of the pusher cylinder 32 of the driven pusher 33. The pressure sensor 34 monitors the pusher cylinder 32. When the pusher cylinder 32 can push the garbage, the pressure sensor 34 will constantly monitor the increase in thrust. When the thrust of the pusher cylinder 32 does not increase at least twice, that is, when the thrust is at its maximum, the hydraulic system reaches the overflow value. Then, the pressure sensor 34 determines that the force of the garbage in the garbage compression box 10 is balanced with the thrust of the pusher cylinder 32. The pressure sensor 34 will then send a start signal to the controller. The controller will then send a signal to the solenoid valve of the rocker cylinder 42. The solenoid valve of the rocker cylinder 42 will cause the rocker cylinder 42 to rocker... When the lifting plate 43 is raised, the raised rocker plate 43 disrupts the balance between the pushing force of the push plate 33 and the resistance of the garbage, allowing the push plate 33 to continue pushing the garbage in. This effectively solves the problem of difficult garbage pushing without changing the overall structure, and changes the garbage's stacking position and movement direction after it enters the garbage compression box 10. First, the garbage stacking position is changed by setting the installation position of the rocker plate 43; second, the movement direction of the garbage is changed by the different angles at which the rocker plate 43 is raised. By changing the movement direction of the garbage, the distribution of the garbage volume is changed, making the garbage more evenly and reasonably distributed in the garbage compression box 10, while also improving work efficiency and avoiding damage to local structures.

[0046] It should be emphasized that before and after garbage compression, the rocker arm 43 will return to a state of being flush with the bottom of the garbage compression box 10.

[0047] In this embodiment, all driving structures, such as push plate cylinder 32 and rocker cylinder 42, are controlled by a power chamber 90 hydraulic valve.

[0048] During the pushing and retracting process of the pusher cylinder 32 and the pusher plate 33, the material falling from the feed hopper 20 is likely to fall into the space of the pusher cylinder 32, affecting the retraction process of the pusher cylinder 32. Therefore, a baffle plate 35 extending towards the pusher cylinder 32 is fixedly attached to the top of the pusher plate 33 of the present invention. The baffle plate 35 is attached to the lower part of the power chamber 90. When the pusher cylinder 32 extends to its farthest point, part of the baffle plate 35 is still located below the power chamber 90. By setting a baffle plate 35 on the pusher plate 33, the material can be easily removed. The baffle plate 35 is placed so that the garbage falling from the feed hopper 20 will fall onto the baffle plate 35 during the process of the push plate cylinder 32 being pushed out. The baffle plate 35 can be a single piece, or two or more pieces. After the push plate cylinder 32 retracts, the baffle plate 35 retracts to the bottom of the power chamber 90, and the garbage falling on it will be blocked by the outer shell of the power chamber 90 and fall onto the front end of the push plate 33. It can be compressed towards the garbage compression box 10 after the push plate 33 is pushed out again, so as to avoid affecting the normal function of the compression structure 30.

[0049] Existing garbage compression boxes 10 are often made into square structures to reduce costs and manufacturing difficulties. However, the square structure and tailgate are not conducive to increasing the height of garbage. Garbage can easily become uncompressible before it reaches the rated height. Therefore, this invention further proposes that the discharge end of the garbage compression box 10 is movably provided with a rear door 11. The bottom of the rear door 11 near the garbage compression box 10 is a conical part 111, and an arc-shaped part 112 is connected above the conical part 111. By setting a unique rear door 11 with a conical bottom, garbage can climb up along the conical part 111 and then be guided by the arc-shaped part 112 to accumulate at the top of the garbage compression box 10. This continuously guides garbage to the top of the garbage compression box 10, making it easier to fill the garbage compression box 10 to full capacity. This results in garbage accumulating from back to front and from top to bottom, making better use of the space in the garbage compression box 10.

[0050] Although the use of the rocker arm 43 can change the force balance between the garbage and thus increase the amount of garbage compressed, the change in the levelness of the rocker arm 43 also creates a gap in the originally tightly sealed garbage compression box 10. This not only makes it easy for wastewater to leak out during garbage compression, but in severe cases, it can even cause garbage to leak out, causing odors to overflow from the garbage compression box 10. It also disrupts the balance between the garbage and provides a venting point for the garbage. To address this, the present invention further includes an arc-shaped sealing plate 50. The inner arc surface of the sealing plate 50 faces the rocker arm 43 and is welded and fixed to the rocker arm 43. The outer arc surface of the sealing plate 50 is flush with the bottom surface of the garbage compression box 10. The rocker arm 43 swings, causing the sealing plate 50 to swing as well. By setting a sealing plate 50 opposite to the rocker arm 43 and welding the sealing plate 50 to the rocker arm 43, the rocker arm 43 remains in close contact with the garbage compression box 10 whether it is rocking up or down. This prevents garbage and water from leaking out to the outside of the garbage compression box 10. While ensuring that the rocker arm 43 is not affected, the garbage and sewage are restricted to a certain extent. The sealing plate 50 is welded to the three sides of the rocker arm 43 in three directions. Therefore, when the rocker arm 43 swings, the three outer sides of the sealing plate 50 are in close contact with the bottom surface of the garbage compression box 10.

[0051] Although the rocker arm 43 and the arc-shaped sealing plate 50 are welded together, they are an integral structure. Since the rocker arm 43 and the sealing plate 50 are in a movable state, some gaps are inevitable, causing some sewage to leak out of the garbage compression box 10. If not treated, this leakage will directly affect the external environment. Therefore, the garbage compression box 10 of this invention has a sewage layer 60 at its bottom. The sewage layer 60 is used to collect sewage dripping from the gap between the sealing plate 50 and the bottom of the garbage compression box 10. The sewage layer 60 extends and is fixed to the left and right sides of the garbage compression box 10 on both sides. Each side of the sewage layer 60 is provided with a sealing cover 61. The sealing cover 61 opens during garbage compression and closes during transportation and unloading. The sewage collected by the sewage layer 60 flows through… After the sealing cover 61 is connected to pressurized water, it can be rinsed. The sewage layer 60 has elongated holes on the left and right sides. One side can be used to flush in clean water, and the other side is used for sewage and garbage to flow out. The openings on both sides facilitate the cleaning of the sewage layer. During operation, the sealing covers 61 on both sides of the sewage layer 60 are open. When the push plate 33 is pushing, sewage will drip down and flow directly out from the side of the sewage layer 60. When the garbage compression box 10 is not working or during transportation, the openings on both sides of the sewage layer 60 are closed. Even if sewage drips from the garbage compression box 10 during garbage transportation, the dripping sewage will be stored in the sewage layer 60 and will not leak directly into the external environment, so as not to affect the external environment. In addition, the impact force of the water flow during cleaning can also be increased by connecting high-pressure water.

[0052] Example 2

[0053] Reference Figures 1-3As shown, this embodiment differs from Embodiment 1 in that it also includes a funnel tube 51 and a water level sensor 52. During the swinging motion of the sealing plate 50 and the rocker plate 43, the sealing plate 50 bears a significant portion of the weight of the garbage in the garbage compression box 10. If the sealing plate 50 deforms, whether bending inwards or outwards, the gap between the sealing plate 50 and the rocker plate 43 is prone to deviation. This can either prevent the rocker plate 43 from lifting properly, damaging the rocker plate cylinder 42 and preventing it from lifting further, or increase the gap between the sealing plate 50 and the rocker plate 43. Either way, this will cause problems with the fit between the sealing plate 50 and the bottom of the garbage box 10. Furthermore, since the sealing plate 50 and the rocker plate 43 are located inside the garbage compression box 10, their condition is not visible from the outside. Therefore, a support structure is provided at the bottom of the sealing plate 50 to receive the sealing plate. The funnel pipe 51, which allows wastewater to drip from the plate 50, extends and is fixed to the bottom of the garbage compression box 10 on both sides. A water volume sensor 52 is installed on the inner side of the water outlet end of the funnel pipe 51. The water volume sensor 52 is connected to an alarm. The funnel pipe 51 is installed at the bottom of the sealing plate 50 and the rocker plate 43. The funnel pipe 51 receives the wastewater dripping from the sealing plate 50. The water volume sensor 52 can monitor the amount of wastewater dripping from the funnel pipe 51. When the water volume sensor 52 detects an abnormal amount of water dripping from the funnel pipe 51, such as no water passing through or a large amount of water passing through in a short time, it indicates that the sealing plate 50 has been deformed. In this case, the operator needs to stop the machine to check and avoid irreversible damage to other structures of the compression equipment. The bottom of the funnel pipe 51 has an opening to allow the falling garbage and wastewater to fall normally.

[0054] Example 3

[0055] Another embodiment of the present invention also provides a control method for a waste compression device, which, using the above-described waste compression device, includes the following steps:

[0056] S1; The garbage is poured into the feed hopper 20 and piled up at the front end of the push plate 33. The equipment is automatically started, and the push plate 33 is pushed back and forth until there is no garbage in the feed hopper 20. The garbage is completely compressed from the area of ​​the compression structure 30 into the garbage compression box 10 and then automatically stops.

[0057] S2; After the garbage is compressed to the rear half of the garbage compression box 10, the garbage will continuously rise along the conical part 111 and the arc part 112 of the rear door until the garbage piles up to the top of the rear half of the garbage compression box 10. The garbage at the top is pushed by the garbage behind and guided by the top flow, so that the garbage is squeezed from back to front and piled up from top to bottom.

[0058] S3; When the pressure sensor 34 fails to detect an increase in pressure on the push plate 33 at least twice, the pressure sensor 34 transmits a signal to the controller, which then sends a signal to the drive end of the rocker cylinder 42, causing the rocker cylinder 42 to lift the rocker plate 43. This causes the rocker plate 43 to agitate the garbage from the bottom, making the garbage bulge upwards. This reduces the resistance between the garbage and breaks the balance between the backward force of the push plate 33 and the front-back force of the garbage resistance. The push plate 33 continues to be activated, and the garbage tilts upwards and moves backwards, continuously increasing the height of the garbage from the rear top of the garbage compression box 10 to the front top.

[0059] S4; When the capacity of the garbage compression box 10 reaches its limit, the voice speaker in the garbage compression box 10 will prompt the staff that the garbage compression box 10 is full, so that the staff can stop the compression operation and carry out subsequent transportation and unloading work. Furthermore, a material sensor is installed at the top front end inside the garbage compression box 10. When the garbage fills to the sensor's sensing position, the garbage compression box 10 is actually full and can sound an alarm to stop working.

[0060] Furthermore, S3 also includes: when the garbage continues to be pushed into the garbage compression box 10, a combined force will be generated, resulting in a new balance that causes the garbage to be unable to be pushed into the garbage compression box 10. At this time, the rocker cylinder 42 is activated again to make the rocker 43 rock up. The direction of garbage flow is different depending on the angle at which the rocker 43 is rocked up. When the angle is small, the garbage mainly flows to the rear. When the angle of the rocker 43 is large, the garbage slowly flows mainly to the front. This process is repeated multiple times until the rocker 43 can no longer rock up and the garbage resistance can no longer be reduced. At this time, it is determined that the garbage compression box 10 is full and a signal is sent to the control terminal.

[0061] Example 4

[0062] In another embodiment, a circuit control system is provided for controlling the above-mentioned waste compression equipment, specifically:

[0063] The push plate 33 is positioned directly below the power chamber 90 via the push plate cylinder 32, and the compression structure 30 is connected to the bottom of the garbage compression box 10. The rocker plate 43 is initially in a lowered state. The rocker plate 43 is then pulled down to be flush with the bottom of the garbage compression box 10 via the rocker plate cylinder 42 or gravity. The rear door 11 is then pulled closed by the rear door cylinder. All switches in the circuit are in the off state, and the controller is in a non-operating state.

[0064] When the garbage is poured into the compression structure 30, it initially accumulates inside. The operator turns on the main power switch 16, and the equipment is powered on. The controller is in standby mode. When the compression cycle self-reset button 18A is pressed, the controller receives a compression cycle signal, and the electromagnetic extension valve 21A of the push plate cylinder 32 is energized. The push plate 33 extends backward, pushing the garbage backward. The garbage is pushed from the compression structure 30 into the garbage compression box 10. When the push plate 33 has fully moved into the garbage compression box 10, the hydraulic oil pressure on the push plate cylinder 32 increases. When the pressure increases to the pressure value P1, the pressure switch 19A is turned on. The pressure switch 19A connects the power supply to pin 3 of the controller. After receiving the signal, the controller disconnects the electromagnetic extension valve 21A of the push plate cylinder 32. At the same time, the controller outputs the electromagnetic contraction valve 21B, which is energized, causing the push plate cylinder 32 to contract towards the front end of the garbage compression box 10. At the same time, the pressure switch 19B is turned off.

[0065] The pusher cylinder 32 drives the pusher plate 33 to retract towards the front end of the housing until the pusher plate 33 is completely retracted below the power compartment 90. When the pusher plate 33 is fully retracted, the hydraulic oil pressure in the retraction circuit of the pusher cylinder 32 rises. When the pressure reaches the set pressure value P2, the pressure switch 19B installed on the retraction oil pipe of the pusher cylinder 32 is activated, the power is turned on, and the controller pin 4 receives the retraction completion signal. The controller stops supplying power to the solenoid retraction valve 21B, the pusher cylinder 32 stops retracting, and the pusher plate 33 stops its forward retraction movement. Simultaneously, during the retraction process, the pusher plate... A small space will automatically form behind the push plate 33. The garbage on the top of the compression structure 30 will fall automatically into the small space at the bottom of the compression structure 30 by gravity, thus automatically filling the entire space formed by the contraction of the bottom push plate 33. When the push plate 33 is contracted to the position, the controller stops supplying power to the electromagnetic contraction valve 21B and switches to supplying power to the electromagnetic extension valve 21A. The electromagnetic extension valve 21A is energized, causing the push plate 33 to move backward. At the same time, the pressure switch 19B of the push plate cylinder 32 is de-energized, and the push plate 33 continuously moves backward and forward, causing the garbage in the compression structure 30 to be continuously pressed downward and backward into the garbage compression box 10.

[0066] As the garbage enters the garbage bin, the garbage in front squeezes the garbage behind, and the garbage behind moves backward through continuous squeezing. When the garbage behind reaches the back of the garbage compression box 10, under the continuous squeezing of the push plate 33, the garbage moves upward and flips through the conical bottom and arc-shaped curved surface of the back door 11. When the garbage reaches a certain amount, the garbage will continue to accumulate until the top of the garbage compression box 10. When the garbage accumulates to the top, if the push plate 33 continues to squeeze the garbage, if it is household garbage, the garbage will be pushed forward through the arc inside the back door 11 until the entire internal space of the garbage compression box 10 is filled.

[0067] If the waste is not of a single type, but contains a certain amount of soil, sand, and construction waste with high density or specific gravity, the pushing force of the pusher plate 33 needs to be significantly increased to continuously push the waste into the waste compression box 10. The waste rises and flips along the arc of the rear door 11. When the waste accumulates to a certain amount, due to its high density, it becomes increasingly difficult for the waste to flip upwards under the influence of gravity. Especially when the waste accumulates to the top, the waste is compressed more firmly, making it difficult for the pusher plate 33 to continue pushing the waste into the waste compression box 10. If the waste compression box 10 is not full and more waste needs to be added, the pusher plate 33 needs to push and retract two or more times consecutively. In this case, the controller program energizes the electromagnetic rocker valve 21C for a period of time, causing the rocker plate 4 to... The rear end of 3 is raised, causing a certain height difference H between the front and rear of the rocker plate 43, or the rocker plate 43 forms a certain angle A. Now, let's take angle A as an example. The size of angle A can be a fixed angle determined according to different box sizes and lengths, or it can be a variable value. The variable angle A is determined by the first raising angle A1. The size of A1 is determined by the energizing time of the first electromagnetic rocker plate raising valve 21C. With the raising angle A1, the solid garbage at the bottom of the original garbage compression box 10 is pushed upward by the rocker plate 43, and the garbage on top protrudes upward. The garbage resistance is reduced, breaking the balance between the backward force of the pusher plate 33 and the front and rear forces of the garbage resistance. At this time, under the pushing force of the pusher plate 33, the garbage becomes inclined upward and backward. The backward garbage moves to the upper rear. If there is no garbage in the upper rear, it can fill the rear space of the garbage compression box 10.

[0068] When the garbage has reached a certain amount, and there is already garbage at the top and back, the newly added garbage will be squeezed upwards and forwards to fill the space in front and above. When the garbage continues to be pushed into the garbage compression box 10, new resistance will be generated, and a new balance will be created, causing the garbage to not be pushed into the garbage compression box 10. At this time, the electromagnetic rocker valve 21C is energized again for a period of time, causing the rocker 43 to generate a larger new angle A2. The upward thrust in the original garbage compression box 10 breaks the balance of the garbage compression force again, and the garbage is pushed forward again through the pusher 33. At this time, more garbage enters in front of the previous garbage, until the internal garbage generates a new balance resistance. The pressure sensor 19C connects the signal, and the controller energizes the rocker cylinder 42 again for a period of time.

[0069] After repeated angle changes, the relationship between the pressure and the number of times the rocker 43 tilts is shown in the figure. Figure 5The pressure remained at its maximum until the garbage basically filled the entire internal space of the garbage compression box 10. At the same time, the garbage in the front, middle and back of the garbage compression box 10 became more compacted. When the rocker arm 43 could no longer be raised, the garbage resistance could not be reduced, and the force balance of the garbage compression box 10 could not be changed. The pressure switch of the hydraulic main oil circuit sent signals to pin 5 of the controller multiple times. After receiving the signal, the controller then energized the electromagnetic rocker arm retraction valve 21D. The rocker arm 43 descended to the bottom of the garbage compression box 10 in a horizontal state. At the same time, the controller sent a signal to the voice speaker 22 to remind the operator that the garbage box was full. After hearing the voice prompt, the operator stopped the operation and proceeded with the subsequent transportation and unloading work.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A waste compression device, comprising a waste compression box (10) for compressing waste, a feed hopper (20) communicating with the waste compression box (10) and for feeding waste, and a compression structure (30) for pushing waste entering from the feed hopper (20) into the waste compression box (10), characterized in that, The waste compression equipment also includes: The bottom surface of the garbage compression box (10) has an installation hole, and a rocker assembly (40) is provided on the installation hole. The rocker assembly (40) includes a mounting base (41) located below the garbage compression box (10), a rocker cylinder (42) movably mounted on the mounting base (41), and a rocker (43) hinged to one side of the output end of the rocker cylinder (42) and closing the installation hole when horizontal. One end of the rocker (43) is hinged to the bottom of the inside of the garbage compression box (10). When the garbage compression box (10) is in an unloaded state, the rocker (43) is flush with the bottom surface of the garbage compression box (10). The compression structure (30) includes a compression chamber (31) communicating with the feed hopper (20), a push plate cylinder (32) movably installed in the compression chamber (31), and a push plate (33) fixed to the push plate cylinder (32) for compressing garbage. The oil circuit of the push plate cylinder (32) is connected to at least one pressure sensor (34). The pressure sensor (34) detects the pressure on the push plate (33) when the push plate (33) compresses the garbage and transmits the pressure data to the controller. The rocker cylinder (42) controls the angle between the rocker (43) and the bottom surface of the garbage compression box (10) through the controller according to the data of the pressure sensor (34). It includes a sealing plate (50) with an arc structure, the inner arc surface of the sealing plate (50) facing the rocker (43) and welded and fixed to the rocker (43), the outer arc surface of the sealing plate (50) is in contact with the bottom surface of the garbage compression box (10), and the rocker (43) swings and drives the sealing plate (50) to swing together. The power chamber (90) is used to drive the push plate cylinder (32) and the rocker cylinder (42).

2. The waste compression device according to claim 1, characterized in that, A baffle plate (35) extending toward the push plate cylinder (32) is fixed to the top of the push plate (33). The baffle plate (35) is attached to the bottom of the power compartment (90). When the push plate cylinder (32) extends to its farthest point, part of the baffle plate (35) is still located below the power compartment (90).

3. The waste compression device according to claim 1, characterized in that, The waste compression box (10) has a rear door (11) movably provided at the discharge end. The bottom of the rear door (11) near the waste compression box (10) is a conical part (111), and an arc-shaped part (112) is connected above the conical part (111).

4. A waste compression device according to claim 1, characterized in that, The bottom of the garbage compression box (10) is provided with a sewage layer (60), which is used to receive sewage dripping from the gap between the sealing plate (50) and the bottom of the garbage compression box (10).

5. A waste compression device according to claim 4, characterized in that, The sewage layer (60) extends and is fixed to the two sides of the garbage compression box (10). Both sides of the sewage layer (60) are provided with sealing covers (61). The sealing covers (61) are opened when the garbage is compressed and closed when the garbage is transported and unloaded.

6. A control method for a waste compression device, using the waste compression device according to any one of claims 1-5, characterized in that, Includes the following steps: S1: Pour the garbage into the feed hopper (20) and pile it up at the front end of the push plate (33). Start the equipment automatically and push the push plate (33) back and forth until there is no garbage in the feed hopper (20). After the garbage is compressed from the entire area of ​​the compression structure (30) into the garbage compression box (10), it will stop automatically. S2: After the garbage is compressed to the rear half of the garbage compression box (10), the garbage will continuously rise along the conical part (111) and arc part (112) of the rear door until the garbage is piled up to the top of the rear half of the garbage compression box (10). The garbage at the top is pushed by the garbage behind and is guided by the top flow, so that the garbage is squeezed from back to front and piled up from top to bottom. S3: When the pressure sensor (34) fails to detect the pressure increase on the push plate (33) at least twice, the pressure sensor (34) transmits a signal to the controller, which sends a signal to the drive end of the rocker cylinder (42) to make the rocker cylinder (42) lift the rocker (43), so that the rocker (43) stirs the garbage from the bottom, making the garbage bulge upward, reducing the resistance between the garbage, breaking the balance between the backward force of the push plate (33) and the front and rear forces of the garbage resistance, and continuing to start the push plate (33), the garbage tilts upward and moves backward, continuously increasing the height of the garbage from the rear top of the garbage compression box (10) to the front top; S4: When the capacity of the garbage compression box (10) reaches its limit, the voice speaker in the garbage compression box (10) will prompt the staff that the garbage compression box (10) is full, so that the staff can stop the compression operation and carry out subsequent transportation and unloading work.

7. The control method for a waste compression device according to claim 6, characterized in that, S3 further includes: When the garbage continues to be pushed into the garbage compression box (10), a new balance is generated, causing the garbage to be unable to be pushed into the garbage compression box (10). At this time, the rocker cylinder (42) is activated again to make the rocker (43) rock up. This is repeated many times until the rocker (43) can no longer rock up and the garbage resistance cannot be reduced. It is determined that the garbage compression box (10) is full and a signal is sent to the control terminal.

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