Garbage compression device comprising pressurization loop

Abstract

A garbage compression device comprising a pressurization loop comprises a compression oil cylinder, a pressurization oil cylinder, an oil tank and a reversing valve. An output cavity and a recovery cavity are formed in the compression oil cylinder, and the pressure in the output cavity and the pressure in the recovery cavity can be adjusted. A pressurization cavity, a small cavity and a large cavity are formed in the pressurization oil cylinder, and the pressure in the pressurization cavity, the small cavity and the large cavity can be adjusted. The oil tank is communicated with the reversing valve, the oil tank is respectively communicated with the recovery cavity and the small cavity through a first oil port of the reversing valve, the oil tank is respectively communicated with the output cavity and the pressurizing cavity through a second oil port of the reversing valve, and the large cavity is communicated with the oil tank through the second oil port of the reversing valve. According to the garbage compression device, through the arrangement of the pressurizing oil cylinder, on the premise that the hydraulic power is not increased, the hydraulic power can be redistributed through pressure increasing and speed reducing, the working condition that the pressure requirement of a system is changed is better adapted, overflow loss of an original system is eliminated, and heating of the system is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste compression, and in particular to a waste compression device including a pressure boosting circuit. Background Technology

[0002] Sanitation equipment such as compactor garbage trucks need to load, compress, and transport garbage. Loading capacity is one of the core indicators of a compactor garbage truck. When the volume of the garbage truck's container is fixed, increasing the compression ratio becomes the only way to increase the loading capacity. Therefore, improving the compression ratio is one of the key design considerations for compactor garbage trucks. Compactor garbage trucks use scrapers to scrape garbage into the container, and then rely on the movement of a sliding plate to compact the garbage inside the container—this is the compression process. The sliding plate then returns empty for the next compression cycle. In existing technical solutions, due to structural limitations of the compression mechanism, the sliding plate cylinder retracts during the compression process. This means that oil enters the rod chamber of the sliding plate cylinder, and the working area of ​​the rod chamber is small, resulting in insufficient cylinder output and limiting the compression force of the sliding plate, thus reducing the loading capacity of the compactor garbage truck. To maximize the system's compression capacity, the accelerator is often pressed during garbage compression to increase the engine speed and bring the hydraulic system to its maximum pressure, i.e., the main relief valve overflows. While this increases the compression force to some extent, the opening of the main relief valve causes serious energy waste and system overheating. In addition, the loud noise generated by the engine running at high speed also seriously affects residents' lives.

[0003] Therefore, there is an urgent need for a waste compression device that can better adapt to changes in pressure demand during waste compression without increasing hydraulic power, so as to reduce overflow losses, reduce system heat generation, and save energy during waste compression. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned defects of the prior art and provide a garbage compression device including a pressure boosting circuit. By setting up a pressure boosting cylinder, the garbage compression device adds a pressure boosting oil circuit to the garbage compression device, so that the garbage compression device can redistribute hydraulic power by increasing pressure and decreasing speed without increasing hydraulic power, better adapt to the working conditions of changing system pressure demand, eliminate the overflow loss of the original system, and reduce system heat generation.

[0005] This utility model provides a garbage compression device including a pressure boosting circuit. The garbage compression device including the pressure boosting circuit is used to redistribute hydraulic power to adapt to pressure changes during the garbage compression process. The garbage compression device including the pressure boosting circuit includes a compression cylinder, a pressure boosting cylinder, an oil tank, and a reversing valve.

[0006] The compression cylinder is provided with an output chamber and a recovery chamber, and the pressure in the output chamber and the recovery chamber can be adjusted. The booster cylinder is provided with a booster chamber, a small chamber and a large chamber, and the pressure in the booster chamber, the small chamber and the large chamber can be adjusted.

[0007] The oil tank is connected to the reversing valve. The oil tank is connected to the recovery chamber and the small chamber through the first oil port of the reversing valve. The oil tank is connected to the output chamber and the boosting chamber through the second oil port of the reversing valve. The large chamber is connected to the oil tank through the second oil port of the reversing valve.

[0008] Preferably, the oil tank, the first oil port and the output chamber of the reversing valve, and the boosting chamber form a compression oil circuit; the oil tank, the second oil port of the reversing valve, and the recovery chamber are connected to form a reset oil circuit, and the reset oil circuit is unidirectionally connected to the small chamber; the boosting chamber is also provided with a first unidirectional oil circuit from the oil tank to the boosting chamber; and the oil tank, the first oil port of the reversing valve, and the large chamber form a boosting oil circuit.

[0009] Preferably, the waste compression device includes a first one-way valve, a second one-way valve, and a third one-way valve. The first one-way valve is disposed on the first one-way oil circuit, and the second one-way valve is disposed on the reset oil circuit such that the reset oil circuit and the small cavity form a one-way oil circuit from the reset oil circuit to the small cavity. The third one-way valve is disposed on the compression oil circuit, and the connection between the compression oil circuit and the pressurization chamber is located between the third one-way valve and the output chamber.

[0010] Preferably, a sequence valve is provided between the first port of the reversing valve and the large chamber in the booster oil circuit to adjust the hydraulic pressure in the large chamber and the booster chamber according to the pressure of the circuit.

[0011] Preferably, the compression cylinder includes a compression cylinder body and a piston rod, one end of the piston rod is slidably disposed in the compression cylinder body, and the other end of the piston rod extends out of the compression cylinder body, and the volume of the output chamber and the recovery chamber changes with the movement of the piston rod.

[0012] Preferably, the booster cylinder includes a booster cylinder body, an adjusting cylinder body, and a movable rod. The booster cylinder body and the adjusting cylinder body are integrally formed. The diameter of the radial section of the booster cylinder body is smaller than the diameter of the radial section of the adjusting cylinder body. The movable rod is slidably disposed within the booster cylinder body and the adjusting cylinder body, with both ends of the movable rod located within the booster cylinder body and the adjusting cylinder body, respectively.

[0013] Preferably, an oil pump is provided between the oil tank and the reversing valve.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model relates to a garbage compactor device with a booster circuit. Through the inclusion of a booster cylinder, multiple oil circuits are formed within the device. The coordination of the reset, booster, and compression oil circuits allows the compactor to redistribute hydraulic power by increasing pressure and decreasing speed without increasing hydraulic power. This better adapts to changing system pressure demands, eliminates overflow losses, and reduces system heat generation. Furthermore, the booster circuit is controlled purely hydraulically, resulting in a simple and reliable structure that avoids electrical control intervention. The control logic is simple and reliable, making it more reliable and durable than conventional electrical control systems. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a waste compression device including a pressure boosting circuit according to this utility model.

[0017] In the diagram: 1. Intensifier cylinder; 11. Intensifier chamber; 12. Small chamber; 13. Large chamber;

[0018] 2. First check valve; 3. Sequence valve; 4. Relief valve; 5. Oil pump; 6. Directional control valve; 7. Third check valve; 8. Second check valve;

[0019] 9. Compression cylinder; 91. Recovery chamber; 92. Output chamber;

[0020] 10. Fuel tank. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] like Figure 1As shown, a garbage compression device including a pressure boosting circuit is used to redistribute hydraulic power during garbage compression to adapt to pressure changes. The garbage compression device including the pressure boosting circuit includes a compression cylinder 9, a pressure boosting cylinder 1, an oil tank 10, and a reversing valve 6. The compression cylinder 9 is provided with an output chamber 92 and a recovery chamber 91, and the pressure in the output chamber 92 and the recovery chamber 91 is adjustable. The pressure boosting cylinder 1 is provided with a pressure boosting chamber 11, a small chamber 12, and a large chamber 13, and the pressure in the pressure boosting chamber 11, the small chamber 12, and the large chamber 13 is adjustable. The oil tank 10 is connected to the reversing valve 6. The oil tank 10 is connected to the recovery chamber 91 and the small chamber 12 through the first oil port of the reversing valve 6, and to the output chamber 92 and the pressure boosting chamber 11 through the second oil port of the reversing valve 6. The large chamber 13 is connected to the oil tank 10 through the second oil port of the reversing valve 6.

[0024] In this embodiment, the configuration of the booster cylinder 1 creates multiple oil passages in the waste compression device. The connection between the booster chamber 11 and the large chamber 13 allows the oil to enter the booster chamber 11 simultaneously with the output chamber 92 of the compression cylinder 9, acting on the sequence valve 3 between the first port of the reversing valve 6 and the large chamber 13. As the pusher advances, the waste is compressed more compactly, and the pressure on the cylinder increases. When the pressure exceeds the set pressure of the sequence valve 3, the sequence valve 3 opens, and the oil enters the large chamber 13. This causes the piston rod in the booster cylinder 1 to move towards the booster chamber 11, pushing the oil in the booster chamber 11 into the output chamber 92 of the compression cylinder 9, thereby increasing the oil pressure in the output chamber 92 of the compression cylinder 9. This gradually increases the pressure at the output end of the compression cylinder 9, compressing the waste pile. This waste compression device, through the addition of a booster cylinder 1, allows it to redistribute hydraulic power by increasing pressure and decreasing speed without increasing hydraulic power itself. This better adapts to changing system pressure demands, eliminates overflow losses, and reduces system heat generation. Furthermore, its booster circuit is controlled purely hydraulically, resulting in a simple and reliable structure that avoids electrical control intervention. The control logic is simple and reliable, making it more reliable and durable than conventional electrical control systems.

[0025] See Figure 1 The oil tank 10, the first oil port and output chamber 92 of the reversing valve 6, and the boosting chamber 11 form a compression oil circuit. The oil tank 10, the second oil port of the reversing valve 6, the recovery chamber 91, and the one-way connected small chamber 12 form a reset oil circuit. The boosting chamber 11 is also connected to the oil tank 10 by a first one-way oil circuit from the oil tank 10 to the boosting chamber 11. The oil tank 10, the first oil port of the reversing valve 6, and the large chamber 13 form a boosting oil circuit. The waste compression device includes multiple one-way valves, which are respectively located in the first one-way oil circuit, the second one-way oil circuit, and the compression oil circuit. The connection between the compression oil circuit and the boosting chamber 11 is located between the one-way valve and the output chamber 92.

[0026] In one embodiment, a sequence valve 3 is provided between the first port of the directional valve 6 and the large chamber 13 in the booster oil circuit to adjust the hydraulic pressure in the large chamber 13 and the booster chamber 11 according to the pressure of the circuit. In a preferred embodiment, the set pressure of the sequence valve 3 is preferably 16 MPa.

[0027] like Figure 1 As shown, the compression cylinder 9 includes a compression cylinder body and a piston rod. One end of the piston rod is slidably disposed within the compression cylinder body, and the other end extends outside the compression cylinder body. The volumes of the output chamber 92 and the recovery chamber 91 change with the movement of the piston rod. The booster cylinder 1 includes a booster cylinder body, an adjusting cylinder body, and a movable rod. The booster cylinder body and the adjusting cylinder body are integrally formed. The radial cross-sectional diameter of the booster cylinder body is smaller than that of the adjusting cylinder body. The movable rod is slidably disposed within the booster cylinder body and the adjusting cylinder body, with both ends of the movable rod located within the booster cylinder body and the adjusting cylinder body, respectively. An oil pump 5 is installed between the oil tank 10 and the reversing valve 6.

[0028] In a preferred embodiment, a reset oil circuit is also connected to the first one-way oil circuit at the outlet of the oil tank 10. An overflow valve 4 is provided at the connection point between the first one-way oil circuit and the reset oil circuit to allow oil to flow from the reset oil circuit to the first one-way oil circuit when the oil pressure exceeds the set pressure of the sequence valve 3. In the above embodiment, the reversing valve 6 is preferably an electromagnetic reversing valve 6.

[0029] Based on the above-mentioned waste compression device including a pressurization circuit, this utility model also provides a method of use:

[0030] Pressurization process: Oil pump 5 starts, the second oil port of reversing valve 6 opens, and hydraulic oil enters the output chamber 92 of compression cylinder 9 through the third check valve 7, causing it to push one end of the piston rod to compress the waste; at the same time, hydraulic oil also enters the pressurization chamber 11 of pressurizing cylinder 1 and acts on the sequence valve 3. At this time, the pressurization chamber 11 in pressurizing cylinder 1 pushes the movable rod to move towards the large chamber 13, and the pressure of the large chamber 13 acts on the sequence valve 3, and the sequence valve 3 closes. Therefore, pressurizing cylinder 1 does not pressurize compression cylinder 9.

[0031] As the pusher advances, the garbage is compacted more and more, and the pressure on the compression cylinder 9 increases. When the pressure exceeds the set pressure of 16MPa of the sequence valve 3, the sequence valve 3 opens, and the oil enters the large chamber 13 of the booster cylinder 1. The moving rod in the booster cylinder 1 pushes forward, pushing the hydraulic oil in the booster chamber 11 into the output chamber 92 of the compression cylinder 9, pressurizing the compression cylinder 9. At this time, the second check valve 8 is manually unlocked, so that the oil in the small chamber 12 of the booster cylinder 1 can rejoin the reset oil circuit in the recovery chamber 91 of the compression cylinder 9 through the second check valve 8 and return to the oil tank 10, finally realizing the compression and pressurization operation. After the operation is completed, the second check valve 8 is restored.

[0032] The retraction and reset process of hydraulic cylinder 9:

[0033] After the compression action is completed, the first port of the reversing valve 6 opens, allowing hydraulic oil to flow into the recovery chamber 91 of the compression cylinder 9, causing it to retract. Simultaneously, the oil flows freely through the second check valve 8 to the small chamber 12 of the booster cylinder, causing it to retract as well. At this time, oil exits from the large chamber 13 and enters the booster chamber 11. The oil in the large chamber 13 of the booster cylinder 1 flows directly back to the oil tank 10 through the check valve of the sequence valve 3. The oil in the booster chamber 11 of the booster cylinder 1 is replenished from the oil exiting the recovery chamber of the compression cylinder 9, and can also be replenished through the oil tank 10 connected to the first check valve 2. Once both the compression cylinder 9 and the booster cylinder have retracted to their positions, the retraction and reset process is complete.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above descriptions only illustrate several embodiments of this utility model, and are quite specific and detailed. These embodiments should not be construed as limiting the scope of protection of the utility model patent application. For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the claims as stated in the claims statement.

Claims

1. A garbage compression device including a pressure boosting circuit, wherein the garbage compression device including the pressure boosting circuit is used to redistribute hydraulic power to the garbage compression device during the garbage compression process to adapt to pressure changes, characterized in that, The waste compression device including the booster circuit includes a compression cylinder, a booster cylinder, an oil tank, and a reversing valve; The compression cylinder is provided with an output chamber and a recovery chamber, and the pressure in the output chamber and the recovery chamber can be adjusted. The booster cylinder is provided with a booster chamber, a small chamber and a large chamber, and the pressure in the booster chamber, the small chamber and the large chamber can be adjusted. The oil tank is connected to the reversing valve. The oil tank is connected to the recovery chamber and the small chamber through the first oil port of the reversing valve. The oil tank is connected to the output chamber and the boosting chamber through the second oil port of the reversing valve. The large chamber is connected to the oil tank through the second oil port of the reversing valve.

2. The waste compression device including a pressurization circuit according to claim 1, characterized in that, The oil tank, the first oil port and the output chamber of the reversing valve, and the boosting chamber form a compression oil circuit. The oil tank, the second oil port of the reversing valve, and the recovery chamber are connected to form a reset oil circuit, and the reset oil circuit is unidirectionally connected to the small chamber. The boosting chamber is also provided with a first unidirectional oil circuit from the oil tank to the boosting chamber. The oil tank, the first oil port of the reversing valve, and the large chamber form a boosting oil circuit.

3. The waste compression device including a pressure boosting circuit according to claim 2, characterized in that, The waste compression device includes a first one-way valve, a second one-way valve, and a third one-way valve. The first one-way valve is disposed on the first one-way oil circuit, and the second one-way valve is disposed on the reset oil circuit such that the reset oil circuit and the small cavity form a one-way oil circuit from the reset oil circuit to the small cavity. The third one-way valve is disposed on the compression oil circuit, and the connection between the compression oil circuit and the pressurization chamber is located between the third one-way valve and the output chamber.

4. The waste compression device including a pressure boosting circuit according to claim 2, characterized in that, A sequence valve is provided between the first port of the reversing valve and the large chamber in the booster oil circuit to adjust the hydraulic pressure in the large chamber and the booster chamber according to the pressure of the circuit.

5. The waste compression device including a pressure boosting circuit according to claim 1, characterized in that, The compression cylinder includes a compression cylinder body and a piston rod. One end of the piston rod is slidably disposed within the compression cylinder body, and the other end of the piston rod extends outside the compression cylinder body. The volumes of the output chamber and the recovery chamber change with the movement of the piston rod.

6. The waste compression device including a pressure boosting circuit according to claim 1, characterized in that, The booster cylinder includes a booster cylinder body, an adjusting cylinder body, and a movable rod. The booster cylinder body and the adjusting cylinder body are integrally formed. The diameter of the radial section of the booster cylinder body is smaller than the diameter of the radial section of the adjusting cylinder body. The movable rod is slidably disposed within the booster cylinder body and the adjusting cylinder body, with both ends of the movable rod located within the booster cylinder body and the adjusting cylinder body, respectively.

7. The waste compression device including a pressure boosting circuit according to claim 1, characterized in that, An oil pump is installed between the oil tank and the reversing valve.

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