Horizontal direct pressure type garbage compression station liquid electric system

Abstract

The utility model discloses a horizontal direct pressure type garbage compression station liquid electricity system. The horizontal direct pressure type garbage compression station liquid electricity system includes oil tank, valve group, push pressure oil cylinder and gate oil cylinder, and oil tank is connected with valve group through oil outlet pipe and oil return pipe, is provided with oil pump on oil outlet pipe, and valve group still includes third reversing valve and fourth reversing valve, and the pressure oil port of third, fourth reversing valve all is linked with oil outlet pipe, and the working oil port of third reversing valve is connected with push pressure oil cylinder, and the oil circuit on the oil return of third reversing valve with oil return pipe intercommunication is provided with first throttle valve, and first throttle valve is used for controlling push pressure oil cylinder with third reversing valve cooperation to realize slow back action, and the working oil port of fourth reversing valve is connected with gate oil cylinder, and the oil circuit on the oil return of fourth reversing valve with oil return pipe intercommunication is provided with second throttle valve, and second throttle valve is used for controlling gate oil cylinder with fourth reversing valve cooperation to realize slow push out action. The utility model has solved the problem of the gate of prior art not to close tightly.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic technology, and in particular to a horizontal direct-pressure waste compression station hydraulic-electric system. Background Technology

[0002] A horizontal direct-pressure waste compression station mainly consists of a horizontal direct-pressure waste compressor, a waste container, a transfer platform, and a detachable waste transport vehicle. When waste is poured into the receiving hopper of the horizontal direct-pressure waste compressor, the compressor's pusher pushes the waste into the connected waste container for compression. This process is repeated until the waste container is full. Then, the gate at the rear of the waste container is closed, and the compressor's upper mechanism separates the compressor from the waste container. The transfer platform under the waste container moves the full container to the loading position, awaiting transfer. The entire process is powered by a hydraulic pump station and is automated. However, after the compressor's pusher fills the waste container, the excessively rapid retraction causes the residual stress from the released waste to rebound, resulting in the gate not closing tightly and severe residue buildup at the rear of the waste container. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a horizontal direct pressure waste compression station hydraulic-electric system that can reduce the phenomenon of slag entrapment at the tail of the waste bin.

[0004] To achieve the above objectives, the technical solution adopted by the hydraulic-electric system of the horizontal direct-pressure waste compression station of this utility model is as follows:

[0005] A horizontal direct-pressure waste compression station hydraulic-electric system includes an oil tank, a valve assembly, a pusher cylinder, and a gate cylinder. The oil tank is connected to the valve assembly via an oil outlet pipe and a return oil pipe. An oil pump is installed on the oil outlet pipe. The valve assembly includes a first directional valve and a second directional valve. The pressure ports of both the first and second directional valves are connected to the oil outlet pipe, and the return ports of both are connected to the return oil pipe. The working port of the first directional valve is connected to the pusher cylinder to control its rapid advance, pressing, or return actions. The working port of the second directional valve is connected to the gate cylinder to control its push-out or return actions. The valve assembly is characterized by the following features: it further includes a third directional valve and a fourth directional valve. The pressure ports of both the third and fourth directional valves are connected to the outlet pipe. The working port of the third directional valve is connected to the push cylinder. A first throttle valve is installed on the oil line connecting the return port of the third directional valve to the return pipe. The first throttle valve works in conjunction with the third directional valve to control the push cylinder to achieve a slow retraction action. The working port of the fourth directional valve is connected to the gate cylinder. A second throttle valve is installed on the oil line connecting the return port of the fourth directional valve to the return pipe. The second throttle valve works in conjunction with the fourth directional valve to control the gate cylinder to achieve a slow push-out action.

[0006] Preferably, the oil pump is a tandem pump, with the large pump and small pump of the tandem pump connected in parallel to the oil outlet pipe through the large pump branch and the small pump branch, respectively. A first safety relief valve is installed on the oil line connecting the large pump branch and the return oil line, and a second safety relief valve is installed on the oil line connecting the small pump branch and the return oil line.

[0007] Preferably, a first check valve is provided on the large pump branch and a second check valve is provided on the small pump branch.

[0008] Preferably, a first hydraulic lock and a first double one-way throttle valve are sequentially installed on the oil lines connecting the working ports of the second and fourth directional valves to the gate cylinder.

[0009] Preferably, the first directional valve is an O-type three-position four-way directional valve, the second directional valve is a Y-type three-position four-way directional valve, and the third and fourth directional valves are both O-type two-position two-way directional valves.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] The valve assembly is augmented with third and fourth directional valves. A first throttle valve is installed on the oil line connecting the return port of the third directional valve to the return oil pipe, and a second throttle valve is installed on the oil line connecting the return port of the fourth directional valve to the return oil pipe. This allows the pusher to slowly retract under load after filling the garbage bin and maintaining pressure for a period of time, gradually releasing the residual stress inside the compressed garbage and reducing the rebound amplitude of the garbage inside the bin. The gate cylinder drives the gate to slowly descend, gradually compacting the rebounding garbage protrusions. It also provides a "buffer filling" space for small fragments (fragments can be pressed into the gaps in the garbage pile), avoiding "hard slag trapping" during rapid closure, thus effectively improving the current serious slag trapping problem at the rear of the garbage bin. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the hydraulic-electric system of the horizontal direct-pressure waste compression station of this utility model.

[0013] Figure 2 This is a schematic diagram of the valve assembly.

[0014] Figure 3 This is a schematic diagram of the hydraulic control principle when the push cylinder makes a return action.

[0015] Figure 4 This is a schematic diagram of the hydraulic control principle when the push cylinder makes a slow return motion.

[0016] Figure 5 This is a schematic diagram of the hydraulic control principle when the gate cylinder makes an outward movement.

[0017] Figure 6 This is a schematic diagram of the hydraulic control principle when the gate cylinder makes a slow pushing action.

[0018] Among them, 10 is the oil tank, 20 is the valve group, 201 is the first directional valve, 202 is the second directional valve, 203 is the third directional valve, 204 is the fourth directional valve, 205 is the fifth directional valve, 206 is the sixth directional valve, 207 is the first throttle valve, 208 is the second throttle valve, 209 is the first hydraulic lock, 210 is the first double one-way throttle valve, 211 is the second double one-way throttle valve, 212 is the second hydraulic lock, 213 is the third double one-way throttle valve, 30 is the push cylinder, 40 is the gate cylinder, 50 is the push tank cylinder, 60 is the lock tank cylinder, 70 is the oil outlet pipe, 80 is the oil return pipe, 90 is the oil pump, 100 is the large pump branch, 1001 is the first one-way valve, 110 is the small pump branch, 1101 is the second one-way valve, 120 is the first safety relief valve, and 130 is the second safety relief valve. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0020] like Figure 1-6As shown, a horizontal direct-pressure waste compression station hydraulic-electric system includes an oil tank 10, a valve group 20, a push cylinder 30, a gate cylinder 40, a push cylinder 50, and a lock cylinder 60. The oil tank 10 is connected to the valve group 20 via an oil outlet pipe 70 and a return pipe 80. An oil pump 90 is installed on the oil outlet pipe 70. The oil pump 90 is a dual pump, with the large pump and the small pump connected in parallel on the oil outlet pipe 70 via a large pump branch 100 and a small pump branch 110, respectively. A first safety relief valve 120 is installed on the oil line connecting the large pump branch 100 and the return pipe 80 to ensure the oil pressure safety of the system when the large pump is pumping oil. A second safety relief valve 130 is installed on the oil line connecting the small pump branch 110 and the return pipe 80 to ensure the oil pressure safety of the system when the small pump is pumping oil. When the pump is pumping oil, to ensure the system's oil pressure safety, a first check valve 1001 is installed on the large pump branch 100 to prevent high-pressure oil backflow from impacting the large pump. A second check valve 1101 is installed on the small pump branch 110 to prevent high-pressure oil backflow from impacting the small pump. The valve group 20 includes a first reversing valve 201, a second reversing valve 202, a third reversing valve 203, a fourth reversing valve 204, a fifth reversing valve 205, and a sixth reversing valve 206. The first and fifth reversing valves are O-type three-position four-way reversing valves, the second and sixth reversing valves are Y-type three-position four-way reversing valves, and the third and fourth reversing valves are O-type two-position four-way reversing valves. The pressure ports of the first, second, third, fourth, fifth, and sixth reversing valves are all connected to the oil outlet pipe 70. The return ports of the first, second, third, fourth, fifth, and sixth directional control valves are all connected to the return oil pipe 80. The working port of the first directional control valve 201 is connected to the push cylinder 30 (the A working port of the first directional control valve is connected to the rod chamber of the push cylinder, and the B working port of the first directional control valve is connected to the rodless chamber of the push cylinder), used to control the push cylinder to achieve rapid advance, pressing, or return actions. The working port of the second directional control valve 202 is connected to the gate cylinder 40 (the A working port of the second directional control valve is connected to the rodless chamber of the gate cylinder, and the B working port of the second directional control valve is connected to the rod chamber of the gate cylinder), used to control the gate cylinder to achieve push-out or return actions. The working port of the third directional control valve 203 is connected to the push cylinder 30 (the A working port of the third directional control valve is connected to the rodless chamber of the gate cylinder, and the B working port of the second directional control valve is connected to the rod chamber of the gate cylinder), used to control the gate cylinder to achieve push-out or return actions. The rod chamber of the hydraulic cylinder is connected, and the B working port of the third directional valve is connected to the rodless chamber of the push cylinder. A first throttle valve 207 is installed on the oil line connecting the return port of the third directional valve 203 to the return oil pipe 80. The first throttle valve 207 works in conjunction with the third directional valve 203 to control the push cylinder 30 to achieve a slow retraction action. The working port of the fourth directional valve 204 is connected to the gate cylinder 40 (the A working port of the fourth directional valve is connected to the rodless chamber of the gate cylinder, and the B working port of the fourth directional valve is connected to the rod chamber of the gate cylinder). A second throttle valve 208 is installed on the oil line connecting the return port of the fourth directional valve 204 to the return oil pipe 80. The second throttle valve 208 works in conjunction with the fourth directional valve 204 to control the gate cylinder 40 to achieve a slow push-out action.The first hydraulic lock 209 and the first double one-way throttle valve 210 are sequentially installed on the oil lines connecting the working ports of the second and fourth directional valves to the gate cylinder 40. The first hydraulic lock 209 ensures that the gate can "stop," and the first double one-way throttle valve 210 ensures that the gate can "move smoothly." The working port of the fifth directional valve 205 is connected to the push-box cylinder 50 (the A working port of the fifth directional valve is connected to the rod chamber of the push-box cylinder, and the B working port of the fifth directional valve is connected to the rodless chamber of the push-box cylinder). The fifth directional valve 205 is used to control the push-box cylinder 50 to achieve the pushing or returning action. The oil lines connecting the working port of the fifth directional valve 205 to the push-box cylinder 50... A second double one-way throttle valve 211 is installed to ensure smooth operation of the push-box cylinder. The working port of the sixth directional valve 206 is connected to the lock-box cylinder 60 (the A working port of the sixth directional valve is connected to the rod chamber of the lock-box cylinder, and the B working port of the sixth directional valve is connected to the rodless chamber of the lock-box cylinder). The sixth directional valve 206 controls the lock-box cylinder 60 to push out or return. A second hydraulic lock 212 and a third double one-way throttle valve 213 are sequentially installed on the oil line connecting the working port of the sixth directional valve 206 to the lock-box cylinder 60. The second hydraulic lock ensures the lock-box cylinder can lock securely, and the third double one-way throttle valve ensures smooth operation of the lock-box cylinder.

[0021] The specific working process and principle of this utility model are as follows: When the pusher head needs to return under load, the motor is energized, the 2DT end of the reversing valve in the second safety relief valve is energized, the 6DT end of the third reversing valve is energized, and the small pump pumps the oil in the oil tank out. The oil enters the rod chamber of the pusher cylinder at a flow rate of 39L / min, forcing the pusher cylinder to make a slow return action. At this time, the residual stress inside the garbage in the bin is gradually released, and the rebound amplitude is small. When the pusher head passes the gate area, the 6DT end of the third reversing valve is de-energized, and the 13DT end of the fourth reversing valve is energized. The oil enters the rodless chamber of the gate cylinder at a flow rate of 39L / min, forcing the gate cylinder to make a slow push action. The gate slowly descends, gradually compacting the rebounded garbage protrusions. There is also a "buffer filling" space for small fragments (fragments can be pressed into the gaps of the garbage pile), avoiding "hard slag trapping" when closing quickly, thus effectively improving the current phenomenon of serious slag trapping at the tail of the garbage bin.

Claims

1. A horizontal direct-pressure waste compression station hydraulic-electric system, comprising an oil tank, a valve group, a pusher cylinder, and a gate cylinder, wherein the oil tank is connected to the valve group via an oil outlet pipe and a return oil pipe, an oil pump is installed on the oil outlet pipe, the valve group includes a first reversing valve and a second reversing valve, the pressure ports of both the first and second reversing valves are connected to the oil outlet pipe, the return ports of both the first and second reversing valves are connected to the return oil pipe, the working port of the first reversing valve is connected to the pusher cylinder for controlling the pusher cylinder to achieve rapid advance, pressing, or return actions, and the working port of the second reversing valve is connected to the gate cylinder for controlling the gate cylinder to achieve push-out or return actions, characterized in that: The valve assembly also includes a third directional valve and a fourth directional valve. The pressure ports of both the third and fourth directional valves are connected to the outlet pipe. The working port of the third directional valve is connected to the push cylinder. A first throttle valve is installed on the oil line connecting the return port of the third directional valve to the return pipe. The first throttle valve works in conjunction with the third directional valve to control the push cylinder to achieve a slow retraction action. The working port of the fourth directional valve is connected to the gate cylinder. A second throttle valve is installed on the oil line connecting the return port of the fourth directional valve to the return pipe. The second throttle valve works in conjunction with the fourth directional valve to control the gate cylinder to achieve a slow push-out action.

2. The hydraulic-electric system of the horizontal direct-pressure waste compression station according to claim 1, characterized in that: The oil pump is a dual pump, with the large pump and the small pump of the dual pump connected in parallel to the oil outlet pipe through the large pump branch and the small pump branch, respectively. A first safety relief valve is installed on the oil line connecting the large pump branch and the return oil line, and a second safety relief valve is installed on the oil line connecting the small pump branch and the return oil line.

3. The hydraulic-electric system of the horizontal direct-pressure waste compression station according to claim 2, characterized in that: A first check valve is installed on the large pump branch, and a second check valve is installed on the small pump branch.

4. The hydraulic-electric system of the horizontal direct-pressure waste compression station according to claim 1, characterized in that: The working ports of the second and fourth directional valves are connected to the gate cylinders via oil lines equipped with a first hydraulic lock and a first double one-way throttle valve.

5. The hydraulic-electric system of the horizontal direct-pressure waste compression station according to claim 1, characterized in that: The first directional valve is an O-type three-position four-way directional valve, the second directional valve is a Y-type three-position four-way directional valve, and the third and fourth directional valves are both O-type two-position two-way directional valves.

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