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CN-118004631-B - Garbage compression and circulation method, garbage pushing method and pre-pressing garbage compressor

CN118004631BCN 118004631 BCN118004631 BCN 118004631BCN-118004631-B

Abstract

The application relates to the technical field of garbage compression equipment, and discloses a garbage compression circulation method, a garbage pushing method and a pre-compression type garbage compressor. In the garbage compression circulation method, when the oil supply pressure is greater than P2, the large pump drives the pushing oil cylinder group to push out, and when the oil supply pressure is increased and greater than P3, the operation of the large pump is stably switched to the operation of the small pump in t0, and meanwhile, the pressure of the second electric control pressure regulating valve is increased to P4. The working efficiency is improved, the process of stably switching the big pump and the small pump is reduced, the switching impact is reduced, and the motor is prevented from being damaged. In the garbage pushing method, in the process of pushing out the auxiliary pushing head by the auxiliary pushing oil cylinder, the electric control pressure regulating valve group is gradually reduced from a maximum preset pressure value to a minimum preset pressure value, so that the requirement of the auxiliary pushing oil cylinder on the large thrust in the early stage of the stroke is met, the requirement of the auxiliary pushing oil cylinder on the stability in the later stage of the stroke is met, and the unstable bending of the auxiliary pushing oil cylinder when the auxiliary pushing oil cylinder stretches out is avoided.

Inventors

  • HUANG ZHENMIAO
  • TANG HUIYONG
  • QIN HENG
  • LIU TAO
  • LIU XU

Assignees

  • 长沙中联重科环境产业有限公司

Dates

Publication Date
20260505
Application Date
20240202

Claims (8)

  1. 1. The garbage compression circulation method is characterized by being applied to a pre-compression type garbage compressor, wherein the pre-compression type garbage compressor comprises a controller, a pushing head module, a pushing oil cylinder group (100), a pressure detector and a pressure limiting oil way module (200), the pressure limiting oil way module (200) comprises a duplex pump (210) connected with an oil way of the pushing oil cylinder group (100) and an electric control pressure regulating valve group (220) arranged on an oil supply pipeline of the duplex pump (210), the duplex pump (210) is provided with a big pump (211) and a small pump (212) which are arranged in parallel, the electric control pressure regulating valve group (220) comprises a first electric control pressure regulating valve (221) corresponding to the big pump (211) and a second electric control pressure regulating valve (222) corresponding to the small pump (212), the pressure detector is used for detecting the oil supply pressure of the pushing oil cylinder group (100), and the pushing oil cylinder group (100) is used for pushing the pushing head module to move, and the controller is electrically connected with the pressure detector, the first electric control pressure regulating valve (221), the second electric control pressure regulating valve (222) and the duplex pump (210); The garbage compression and circulation method comprises the following steps: s100, starting compression circulation, and jointly driving the pushing cylinder group (100) to push out through the big pump (211) and the small pump (212); S110, under the condition that the oil supply pressure is increased and is greater than P2, controlling the second electric control pressure regulating valve (222) to lose electricity and simultaneously controlling the small pump (212) to stop working, and driving the pushing oil cylinder group (100) to push out through the large pump (211); S120, under the condition that the oil supply pressure is increased and is greater than P3, the pressure of the second electric control pressure regulating valve (222) is increased to P4 in t0, meanwhile, the pressure of the first electric control pressure regulating valve (221) is reduced to 0 in t0, and the pressure is switched to the small pump (212) to drive the pushing oil cylinder group (100) to push out; And S130, maintaining the operation of the small pump (212) until one compression cycle is completed.
  2. 2. The garbage compression and recycling method according to claim 1, characterized in that said step S100 comprises: s101, starting compression circulation, and driving the pushing cylinder group (100) to be pushed out differentially through the large pump (211) and the small pump (212) together; S102, under the condition that the oil supply pressure is increased and is larger than P1, the large pump (211) and the small pump (212) jointly drive the pushing oil cylinder group (100) to be combined and pushed out.
  3. 3. The garbage compression and recycling method according to claim 1, characterized in that said step S130 comprises: S131, under the condition that the oil supply pressure rises and reaches P4, the pushing oil cylinder group (100) enters a pressure maintaining state; And S132, after the pressure is maintained for t1 time, the pushing oil cylinder group (100) is retracted and reset to complete one compression cycle.
  4. 4. The garbage compression and recycling method according to claim 1, characterized in that the first electrically controlled pressure regulating valve (221) and the second electrically controlled pressure regulating valve (222) are proportional overflow valves or multistage on-off overflow valves.
  5. 5. The garbage compression and recycling method according to claim 1, wherein the push head module comprises a main push head and a sub push head; the pushing cylinder group (100) comprises: A main pushing cylinder (110) for driving the main pushing head and the auxiliary pushing head to synchronously move, and And the auxiliary pushing oil cylinder (120) is used for driving the auxiliary pushing head to move.
  6. 6. The garbage compression and recycling method according to claim 5, further comprising a garbage pushing method, the garbage pushing method comprising: S200, driving the main pushing head and the auxiliary pushing head to be pushed out together through the main pushing oil cylinder (110); s210, under the condition that the main pushing oil cylinder (110) reaches the maximum extending stroke, the electric control pressure regulating valve group (220) is regulated to the maximum preset pressure value, and the auxiliary pushing oil cylinder (120) is started to drive the auxiliary pushing head to push out; s220, gradually reducing the electric control pressure regulating valve group (220) from the maximum preset pressure value to the minimum preset pressure value in the process of pushing out the auxiliary pushing head by the auxiliary pushing oil cylinder (120); and S230, controlling the main pushing head and the auxiliary pushing head to retreat and reset.
  7. 7. The garbage compression and recycling method according to claim 6, characterized in that the electrically controlled pressure regulating valve group (220) is a proportional relief valve or a multistage on-off relief valve.
  8. 8. The garbage compression and recycling method according to claim 1, wherein the push head module is of a single push head structure.

Description

Garbage compression and circulation method, garbage pushing method and pre-pressing garbage compressor Technical Field The application relates to the technical field of garbage compression equipment, in particular to a garbage compression circulation method, a garbage pushing method and a pre-compression type garbage compressor. Background In the process of treating household garbage, the garbage is required to be collected by a collection vehicle to all streets, then the garbage is transported to a designated garbage treatment site by the collection vehicle for compression treatment, for example, garbage is compressed into blocks, and then the block garbage is transferred to an incineration plant or a landfill through a transfer vehicle. The complete working process of the horizontal pre-compression type garbage compressor commonly used at present comprises the steps of machine box butt joint, compression circulation, material packing and machine box separation. The longer the compression cycle takes, the key process that determines the efficiency of the compressor process. The compression cycle is defined as a reciprocating cycle of the pushing head, pushing garbage into the compression bin from the receiving bin and compressing the garbage. The material packing is defined as that the main pushing force and the auxiliary pushing force push materials, and the compressed and formed garbage is pushed into the garbage transfer vehicle. When the auxiliary pushing and pushing materials are carried out, the thrust required at the beginning is larger, and the required thrust is gradually reduced along with the fact that garbage is gradually pushed into the dustbin. In the existing horizontal pre-compression type garbage compressor, a main pressure regulating oil way in an oil way system for controlling compression circulation and material packing usually adopts a single-stage switch overflow valve, so that the switching control of a duplex pump (a big oil pump and a small oil pump) on an oil supply oil way can only set 1 or 2 pressure values for the switch overflow valve through a mechanical pressure regulating handle, and the pressure once set cannot be modified through a control program. This results in the possibility of overload damage to the motor driving the tandem pump during the compression cycle process and also in the course of switching with a large pressure surge. Similarly, when a single-stage switch type overflow valve is adopted for a material packing process, the pressure of an auxiliary pushing oil cylinder driving auxiliary pushing can not be adjusted in real time during auxiliary pushing, if the setting pressure of the switch type overflow valve is low in the initial stage, the material can not be pushed in the initial stage, and if the pushing requirement is met, the risk of unstably bending the oil cylinder exists after the auxiliary pushing oil cylinder pushes out a long stroke. Disclosure of Invention The application aims to provide a garbage compression and circulation method, a garbage pushing method and a pre-pressing garbage compressor, which are used for solving the problems that in the prior art, a motor driving a duplex pump to work is overloaded and damaged due to adoption of a single-stage switch overflow valve, pressure impact exists in the switching process of the duplex pump, and the risk of instability and bending of a secondary pushing oil cylinder exists. In order to achieve the above object, in a first aspect, the present application provides a garbage compression circulation method, which is applied to a pre-compression type garbage compressor, where the pre-compression type garbage compressor includes a controller, a push head module, a push head cylinder group, a pressure detector, and a pressure limiting oil path module, the pressure limiting oil path module includes a duplex pump connected with an oil path of the push head cylinder group and an electric control pressure regulating valve group disposed on an oil supply pipeline of the duplex pump, the duplex pump has a big pump and a small pump which are disposed in parallel, the electric control pressure regulating valve group includes a first electric control pressure regulating valve corresponding to the big pump and a second electric control pressure regulating valve corresponding to the small pump, the pressure detector is used for detecting an oil supply pressure of the push head cylinder group, and the push head cylinder group is used for pushing the push head module to move, and the controller is electrically connected with the pressure detector, the first electric control pressure regulating valve, the second electric control pressure regulating valve, and the duplex pump; The garbage compression and circulation method comprises the following steps: s100, starting compression circulation, and driving the pushing oil cylinder group to push out through the big pump and the small pump together; s110, under the cond