CN118004631A - Garbage compression and circulation method, garbage pushing method and pre-pressing garbage compressor - Google Patents

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.

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 definition of the compression cycle is: the pushing head circulates reciprocally to push the garbage into the compression bin from the receiving bin and compress the garbage. The definition of material packing is: and pushing the compressed garbage into the garbage transfer vehicle by the main pushing force and the auxiliary pushing force. 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 jointly driving the pushing oil cylinder group to push out through the big pump and the small pump;

S110: under the condition that the oil supply pressure is increased and is larger than P2, controlling the second electric control pressure regulating valve to lose electricity and stopping the small pump, and driving the pushing oil cylinder group to push out through the large pump;

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 is increased to P4 in t0, and meanwhile, the pressure of the first electric control pressure regulating valve is reduced to 0 in t0, and the pressure is switched to the small pump to drive the pushing oil cylinder group to push out;

s130: the pump is maintained in operation until one compression cycle is completed.

As a further improvement of the above technical scheme:

in one possible implementation, the step S100 includes:

S101: starting compression circulation, and driving the pushing oil cylinder group to be pushed out differentially through the large pump and the small pump together;

S102: and under the condition that the oil supply pressure is increased and is larger than P1, the combined flow of the pushing oil cylinder is driven to be pushed out by the large pump and the small pump.

In one possible implementation, the step S130 includes:

s131: under the condition that the oil supply pressure rises and reaches P4, the pushing oil cylinder group enters a pressure maintaining state;

S132: and after the pressure is maintained for t1, the pushing oil cylinder group is retracted and reset to complete one compression cycle.

In one possible embodiment, the first electrically controlled pressure regulating valve and the second electrically controlled pressure regulating valve are proportional relief valves or multi-stage switching relief valves.

In one possible embodiment, the push head module comprises a main push head and a secondary push head;

The pushing oil cylinder group comprises:

The main pushing oil cylinder is used for driving the main pushing head and the auxiliary pushing head to synchronously move; and

And the auxiliary pushing oil cylinder is used for driving the auxiliary pushing head to move.

In one possible embodiment, the push head module is a single push head structure.

In order to achieve the above object, in a second aspect, the present application further provides a garbage pushing method, which is applied to a pre-pressing garbage compressor, where the pre-pressing garbage compressor includes a controller, a pushing head module, a pushing cylinder set and a pressure limiting oil path module, the pushing head module includes a main pushing head and an auxiliary pushing head, the pushing cylinder set includes a main pushing cylinder connected with the main pushing head and an auxiliary pushing cylinder connected with the auxiliary pushing head, the pressure limiting oil path module includes a duplex pump connected with an oil path of the pushing cylinder set and an electric control pressure regulating valve set disposed on an oil supply path of the duplex pump, and the controller is electrically connected with the electric control pressure regulating valve set;

The garbage pushing method comprises the following steps:

S200: the main pushing head and the auxiliary pushing head are driven to be pushed out together through the main pushing oil cylinder;

s210: under the condition that the main pushing oil cylinder reaches the maximum extension stroke, the electric control pressure regulating valve group is regulated to the maximum preset pressure value, and the auxiliary pushing oil cylinder is started to drive the auxiliary pushing head to push out;

S220: gradually reducing the electric control pressure regulating valve group from the maximum preset pressure value to a minimum preset pressure value in the process that the auxiliary pushing oil cylinder drives the auxiliary pushing head to push out;

s230: and controlling the main pushing head and the auxiliary pushing head to retreat and reset.

As a further improvement of the above technical scheme:

In one possible embodiment, the electrically controlled pressure regulating valve group is a proportional relief valve or a multi-stage switching relief valve.

In order to achieve the above purpose, in a third aspect, the application further provides a pre-pressing type garbage compressor, which comprises a controller, a push head module, a push oil cylinder group, a pressure detector and a pressure limiting oil way module;

The pressure limiting oil way module comprises a duplex pump connected with the oil way of the pushing oil cylinder group and an electric control pressure regulating valve group arranged on an oil supply pipeline of the duplex pump, wherein the duplex pump is provided with a big pump and a small pump which are arranged in parallel, and the electric control pressure regulating valve group comprises 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 the oil supply pressure of the pushing oil cylinder group;

the pushing cylinder group is used for pushing the pushing head module to move;

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.

As a further improvement of the above technical scheme:

In one possible embodiment, the push head module comprises a main push head and a secondary push head;

The pushing oil cylinder group comprises:

The main pushing oil cylinder is used for driving the main pushing head and the auxiliary pushing head to synchronously move; and

And the auxiliary pushing oil cylinder is used for driving the auxiliary pushing head to move.

Compared with the prior art, the application has the beneficial effects that:

The application provides a garbage compression circulation method, a garbage pushing method and a pre-pressing garbage compressor, wherein in the garbage compression circulation method, under the condition that the oil supply pressure is larger than P2, a large pump drives a pushing oil cylinder group to push out, under the condition that the oil supply pressure is increased and larger 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 a second electric control pressure regulating valve is increased to P4. Because the efficiency is higher when big pump works, on the one hand can improve work efficiency, on the other hand increases the process that big pump alone works and then carries out big pump and little pump steady switching, reduces the switching impact, can effectively avoid simultaneously because of the system response time delay, when directly switching to little pump work when P3, appear big pump and little pump and participate in the work simultaneously and make fuel feeding pressure reach P3, and lead to making the motor of duplex pump in the situation of serious overload running state to prevent the motor damage.

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 the maximum preset pressure value to the minimum preset pressure value, so that the requirement of the auxiliary pushing oil cylinder on the large thrust (high pressure) in the early stage of the stroke can be met, the requirement of the auxiliary pushing oil cylinder on the stability (low pressure) in the later stage of the stroke can be met, the unstable bending of the auxiliary pushing oil cylinder when the auxiliary pushing oil cylinder stretches out is avoided, the requirement can be met by adopting the oil cylinder with smaller specification, and the cost can be remarkably reduced.

Additional features and advantages of the application will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate only certain embodiments of the application and, therefore, should not be considered as limiting the scope, since it is possible to obtain other related drawings from the drawings without inventive step by those of ordinary skill in the art. In the drawings:

fig. 1 shows a schematic diagram of a hydraulic oil circuit of a pre-compression type garbage compressor according to an embodiment of the present application;

FIG. 2 shows a flow chart of a garbage compression and recycling method provided by an embodiment of the application;

Fig. 3 is a schematic diagram of a pressure switching manner of a big pump and a small pump in the garbage compression circulation method according to the embodiment of the present application;

fig. 4 shows a flowchart of a garbage pushing method provided by an embodiment of the present application;

Fig. 5 shows a curve of pressure of a secondary pushing cylinder along with a stroke in the garbage pushing method according to the embodiment of the application.

Reference numerals illustrate:

100. a pushing cylinder group; 110. a main push cylinder; 120. a secondary pushing oil cylinder;

200. a pressure limiting oil circuit module; 210. a duplex pump; 211. a large pump; 212. a small pump; 220. an electric control pressure regulating valve group; 221. a first electrically controlled pressure regulating valve; 222. the second electric control pressure regulating valve;

300. and an oil tank.

Detailed Description

The following describes the detailed implementation of the embodiments of the present application with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

In the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The application will be described in detail below with reference to the drawings in connection with exemplary embodiments.

Example 1

Referring to fig. 1, 2 and 3, the present embodiment provides a garbage compression and recycling method applied to a pre-compression garbage compressor.

In this embodiment, the pre-compression type garbage compressor comprises a controller, a push head module, a push cylinder group 100, a pressure detector and a pressure limiting oil way module 200. The pressure limiting oil way module 200 includes a duplex pump 210 connected to the oil way of the pushing oil cylinder set 100 and an electric control pressure regulating valve set 220 disposed on the oil supply pipeline of the duplex pump 210. The tandem pump 210 has a large pump 211 and a small pump 212 arranged in parallel, and the electric control pressure regulating valve group 220 includes a first electric control pressure regulating valve 221 corresponding to the large 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 ram set 100. The pushing cylinder set 100 is used for pushing the pushing head module to move. The controller is electrically connected to the pressure detector, the first electrically controlled pressure regulating valve 221, the second electrically controlled pressure regulating valve 222 and the dual pump 210, so that the controller can adjust the pressures of the first electrically controlled pressure regulating valve 221 and the second electrically controlled pressure regulating valve 222 in real time, and can control the large pump 211 and the small pump 212 in the dual pump 210 to work.

Specifically, the garbage compression and circulation method comprises the following steps:

s100: the compression cycle is started and the pushing cylinder set 100 is driven to push out by the large pump 211 and the small pump 212. So as to increase the initial pushing speed.

S110: in the case that the oil supply pressure is increased and is greater than P2, the second electronically controlled pressure regulating valve 222 is controlled to lose electricity and stop the small pump 212 (i.e. the small pump 212 is controlled to stop working at the same time), and the large pump 211 drives the pushing cylinder group 100 to push out.

S120: in the case that the oil supply pressure increases and is greater than P3, a pressure signal of P4 is given to the second electronically controlled pressure regulating valve 222 in the time t0, and at the same time, the pressure signal of the first electronically controlled pressure regulating valve 221 is reduced to 0 in the time t0, and the pressure signal is switched to the small pump 212 to drive the pushing cylinder set 100 to push out (refer to fig. 3). In this way, smooth switching of the big pump 211 and the small pump 212 is realized in the t0 time, so that on one hand, the pressure stability of the push head module is ensured, and on the other hand, impact caused by abrupt pressure change when the big pump 211 and the small pump 212 are switched is avoided.

S130: the small pump 212 is maintained running until one compression cycle is completed.

It should be noted that the switching process of the large pump 211 and the small pump 212 satisfies the power and pressure continuity requirements.

Further, the step S100 includes:

S101: the compression cycle is started, and the pushing cylinder set 100 is driven by the big pump 211 and the small pump 212 to be pushed out differentially.

S102: in the case where the oil supply pressure is increased and is greater than P1, the pusher cylinder combination 100 is jointly driven by the large pump 211 and the small pump 212 to be pushed out in a confluence.

Wherein, the pushing cylinder group 100 pushes out differentially: hydraulic oil output by the big pump 211 and the small pump 212 directly enters the rodless cavity of the oil cylinder (the main pushing oil cylinder 110 in the pushing oil cylinder group 100), and hydraulic oil with the rod cavity of the oil cylinder also directly enters the rodless cavity, so that the pushing speed is high. The pushing oil cylinder combination 100 performs combined pushing: hydraulic oil output by the big pump 211 and the small pump 212 directly enters the rodless cavity of the oil cylinder, the hydraulic oil with the rod cavity of the oil cylinder directly returns to the oil tank 300, the hydraulic oil does not enter the rodless cavity any more, and the pushing speed is slower than the differential pushing speed.

The step S130 includes:

s131: under the condition that the oil supply pressure rises and reaches P4, the pushing oil cylinder group 100 enters a pressure maintaining state;

S132: after the pressure is maintained for t1, the pushing cylinder group 100 is backed and reset, and one compression cycle is completed.

The magnitude relation of the above P1, P2, P3 and P4 is as follows: p1 is less than P2 is less than P3 is less than P4.

In the present embodiment, the first electrically controlled pressure regulating valve 221 and the second electrically controlled pressure regulating valve 222 are proportional relief valves or multi-stage switching relief valves. It will be appreciated that the pressure of the proportional relief valve is controlled by a program in the controller. The multistage switch overflow valve can realize similar proportional control by adopting a plurality of points.

In some embodiments, the pusher module includes a primary pusher and a secondary pusher. The pushing cylinder group 100 comprises a main pushing cylinder 110 and an auxiliary pushing cylinder 120, wherein the main pushing cylinder 110 is used for driving the main pushing head and the auxiliary pushing head to synchronously move; the auxiliary pushing cylinder 120 is used for driving the auxiliary pushing head to move.

In other embodiments, the pusher module is a single pusher structure, i.e., there is only one pusher.

If a single-stage switch overflow valve is adopted, the large pump 211 cannot be smoothly switched to a single working mode in the garbage compression cycle, and the small pump 212 is directly switched to drive the pushing cylinder set 100 to push out when the oil supply pressure reaches P3. This is the case:

Clicking a compression cycle button to start compression cycle, driving the pushing cylinder group 100 to quickly push out in a differential mode by the large pump 211 and the small pump 212, ending differential conversion to the large pump 211 and the small pump 212 to drive the pushing cylinder group 100 to be combined and pushed out when the oil supply pressure is gradually increased and is larger than P1, and powering off a switch overflow valve corresponding to the large pump 211 and driving the pushing cylinder group 100 to be pushed out by the small pump 212 when the oil supply pressure is continuously increased and is larger than P2, wherein the pushing speed of the push head module is slower.

The correlation is calculated as follows:

the relation formula between the motor power and the pressure in the pressure limiting oil circuit module 200 is W=P (q1+q2); wherein, W is the power of the motor; p, oil supply pressure; q1, large pump 211 flow; q2, small pump 212 flow.

For a hydraulic system driven by a fixed-frequency motor, the power W, the flow q1 of the large pump 211 and the flow q2 of the small pump 212 are all fixed values. From this, the maximum pressure value P2 of the confluence advancing of the large pump 211 and the small pump 212 and the pressure value P3 when the large pump 211 is operated alone, that is, p2=w/(q1+q2) can be calculated; p3=w/q 1.

It will be appreciated that during compression of the waste, the pressure P2 is a readily attainable value, and the pump 212 is switched to operate at a slow rate after the P2 value is reached. If the pressure reaches P2 and then switches to the large pump 211 to work, and then switches to the small pump 212 to work when reaching P3, the pressure of the switch overflow valve corresponding to the large pump 211 needs to be set to be larger than P3, at this time, because of the existence of the response time of the system, the pressure may reach P3 when the large pump 211 and the small pump 212 are in the confluence work, at this time, the motor driving the duplex pump 210 is in a serious overload state, so that an alarm is stopped and even the motor is damaged, and in addition, a larger pressure impact is accompanied in the process of switching the large pump 211 back to the small pump 212.

In the present embodiment, in the garbage compression and recycling method, when the oil supply pressure is greater than P2, the large pump 211 drives the pushing cylinder set 100 to push out, and when the oil supply pressure is increased and greater than P3, the large pump 211 is switched to the small pump 212 in a stable operation within t0, and the pressure of the second electronically controlled pressure regulating valve 222 is increased to P4. Because the efficiency of the big pump 211 is higher during operation, on the one hand, the working efficiency can be improved, on the other hand, the process of the big pump 211 and the small pump 212 being smoothly switched after the big pump 211 is singly operated is increased, the switching impact is reduced, meanwhile, the situation that the motor of the duplex pump 210 is in a serious overload operation state due to the fact that the big pump 211 and the small pump 212 are simultaneously engaged in operation to enable the oil supply pressure to reach P3 when the big pump 211 and the small pump 212 are directly switched into the small pump 212 to operate during P3 due to the response delay of the system can be effectively avoided, and the motor is prevented from being damaged. Thus, in this embodiment, the use of a smaller motor and oil pump can be achieved, and the same garbage disposal capacity can be achieved at a lower cost.

Example two

Referring to fig. 1,4 and 5, the present embodiment provides a garbage pushing method applied to a pre-compression garbage compressor.

The pre-pressing type garbage compressor comprises a controller, a pushing head module, a pushing oil cylinder group 100 and a pressure limiting oil way module 200. The pushing head module comprises a main pushing head and an auxiliary pushing head, the pushing oil cylinder group 100 comprises a main pushing oil cylinder 110 connected with the main pushing head and an auxiliary pushing oil cylinder 120 connected with the auxiliary pushing head, 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, and the controller is electrically connected with the electric control pressure regulating valve group 220.

In this embodiment, the garbage pushing method includes:

S200: the main pushing head and the auxiliary pushing head are driven to be pushed out together through the main pushing oil cylinder 110.

S210: in the case that the main pushing cylinder 110 reaches the maximum extension stroke, the electric control pressure regulating valve set 220 is adjusted to the maximum preset pressure value, and the auxiliary pushing cylinder 120 is started to drive the auxiliary pushing head to push out. This ensures that the auxiliary pushing cylinder 120 has a large pushing force in the early stage of the stroke, and can push the garbage.

S220: in the process of driving the auxiliary pushing head to push out by the auxiliary pushing cylinder 120, the electric control pressure regulating valve set 220 is gradually reduced from the maximum preset pressure value to the minimum preset pressure value.

The thrust requirement for pushing the garbage is gradually reduced as the garbage is gradually pushed out of the chassis of the pre-compression type garbage compressor. Thus, as the extension stroke of the auxiliary pushing cylinder 120 increases, the pressure of the electric control pressure regulating valve set 220 is gradually reduced (refer to fig. 5), so that the auxiliary pushing cylinder 120 can always push garbage in the whole pushing stroke.

S230: and controlling the main pushing head and the auxiliary pushing head to retreat and reset.

In this embodiment, the electrically controlled pressure regulating valve unit 220 is a proportional relief valve or a multi-stage on-off relief valve. It will be appreciated that the pressure of the proportional relief valve is controlled by a program in the controller. The multistage switch overflow valve can realize similar proportional control by adopting a plurality of points.

If a single-stage switch overflow valve is used, the pressures of the main push cylinder 110 and the auxiliary push cylinder 120 are set to be constant values, and cannot be adjusted in real time in the working process. And because the diameter of the piston rod of the main pushing cylinder 110 is larger, the whole stroke can bear higher pressure without instability, but the diameter of the piston rod of the auxiliary pushing cylinder 120 is relatively smaller, and the thrust born by the piston rod of the auxiliary pushing cylinder 120 gradually decreases along with the stroke. Therefore, when the switch type overflow valve has only 1 or 2 fixed control pressures, if the set pressure is low, the material cannot be pushed in the initial stage, and if the pushing requirement is met, the auxiliary pushing cylinder 120 has the risk of instability and bending after pushing out a long stroke.

Compared with the above, the electric control pressure regulating valve set 220 adopted in the present embodiment can regulate the pressure in real time, and in the process of driving the auxiliary pushing head by the auxiliary pushing cylinder 120 in the garbage pushing method, as the stroke of the auxiliary pushing cylinder 120 increases, the electric control pressure regulating valve set 220 is gradually reduced from the maximum preset pressure value to the minimum preset pressure value, so that on one hand, the requirement of the auxiliary pushing cylinder 120 on the large thrust (high pressure) in the early stage of the stroke can be met, and on the other hand, the requirement of the auxiliary pushing cylinder 120 on the stability (low pressure) in the later stage of the stroke can be met, the unstable bending of the auxiliary pushing cylinder 120 when extending is avoided, and the requirement can be met by adopting the smaller-specification cylinder, thereby remarkably reducing the cost.

Example III

Referring to fig. 1, the present embodiment provides a pre-pressing type garbage compressor, which can be used for compressing garbage and pushing and packing the garbage.

In this embodiment, the pre-compression type garbage compressor comprises a controller, a push head module, a push 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, wherein the duplex pump 210 is provided with a big pump 211 and a small pump 212 which are arranged in parallel, and 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 ram set 100. The pushing cylinder set 100 is used for pushing the pushing head module to move. The controller is electrically connected to the pressure detector, the first electrically controlled pressure regulating valve 221, the second electrically controlled pressure regulating valve 222, and the tandem pump 210.

Further, the push head module comprises a main push head and an auxiliary push head. The pushing ram set 100 includes a main pushing ram 110 and a sub-pushing ram 120. The main push cylinder 110 is used for driving the main push head and the auxiliary push head to synchronously move; the auxiliary pushing cylinder 120 is used for driving the auxiliary pushing head to move.

In the present embodiment, the first electrically controlled pressure regulating valve 221 and the second electrically controlled pressure regulating valve 222 are proportional relief valves or multi-stage switching relief valves. It will be appreciated that the pressure of the proportional relief valve is controlled by a program in the controller. The multistage switch overflow valve can realize similar proportional control by adopting a plurality of points.

Alternatively, the controller may be selected to be a PLC controller.

Referring to fig. 2 and fig. 4 together, the pre-compression garbage compressor provided in this embodiment may perform garbage compression treatment by using the garbage compression circulation method provided in the first embodiment, so as to reduce the garbage compression capacity into blocks. The garbage pushing and packaging treatment can be performed by adopting the garbage pushing method provided by the second embodiment, so that the garbage with the reduced volume and the blocks can be transferred into the carriage of the garbage transfer truck.

The garbage compression and recycling method and the garbage pushing method are described in detail above, and are not described herein.

The pre-compaction formula rubbish compressor that this embodiment provided still has following advantage:

1. the hydraulic system of the pre-compression type garbage compressor is simpler, the efficiency is higher, and the control is more flexible by adopting a proportional pressure regulation mode;

2. The garbage compression and circulation method adopts a proportion control mode, which increases the working duty ratio of the big pump 211 and improves the working efficiency;

3. In the garbage pushing method, the auxiliary pushing cylinder 120 of the auxiliary pushing head adopts a pushing proportion control mode, and the full stroke stability of the auxiliary pushing cylinder can be ensured by adopting the mode;

4. the pressure value of the proportional control can be set and modified in the parameter setting, so that the pressure value can be adjusted according to the actual working condition, and the operation is more flexible.

It should be noted that, the curves of the changes shown in fig. 3 and 5 in the drawings of the present embodiment are only illustrative, and the present invention is not limited to the linear shape, and may be curved or wavy, and any form of change that achieves the present effect is within the scope of protection of the present patent.

The foregoing details of the optional implementation of the embodiment of the present application have been described in conjunction with the accompanying drawings, but the embodiment of the present application is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solution of the embodiment of the present application within the scope of the technical concept of the embodiment of the present application, where all the simple modifications belong to the protection scope of the embodiment of the present application.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

In addition, any combination of various embodiments of the present application may be performed, so long as the concept of the embodiments of the present application is not violated, and the disclosure of the embodiments of the present application should also be considered.

Claims (10)

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 a compression cycle, and jointly driving the pushing oil 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 larger 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;

s130: the pump (212) is maintained in operation until a compression cycle is completed.

2. The garbage compression and recycling method according to claim 1, characterized in that said step S100 comprises:

S101: starting a compression cycle, and driving the pushing cylinder group (100) to be pushed out differentially through the large pump (211) and the small pump (212) together;

S102: when 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 ejected in a converging way.

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;

s132: after the pressure is maintained for t1, the pushing oil cylinder group (100) is retracted and reset to complete one compression cycle.

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. 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:

The main pushing oil cylinder (110) is used 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. The garbage compression and recycling method according to claim 1, wherein the push head module is of a single push head structure.

7. The garbage pushing method is characterized by being applied to a pre-pressing type garbage compressor, wherein the pre-pressing type garbage compressor comprises a controller, a pushing head module, a pushing oil cylinder group (100) and a pressure limiting oil way module (200), the pushing head module comprises a main pushing head and an auxiliary pushing head, the pushing oil cylinder group (100) comprises a main pushing oil cylinder (110) connected with the main pushing head and an auxiliary pushing oil cylinder (120) connected with the auxiliary pushing head, 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), and the controller is electrically connected with the electric control pressure regulating valve group (220);

The garbage pushing method comprises the following steps:

S200: the main pushing head and the auxiliary pushing head are driven 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 a minimum preset pressure value in the process of pushing out the auxiliary pushing head by the auxiliary pushing oil cylinder (120);

s230: and controlling the main pushing head and the auxiliary pushing head to retreat and reset.

8. The garbage pushing method according to claim 7, wherein the electrically controlled pressure regulating valve group (220) is a proportional overflow valve or a multistage switch overflow valve.

9. The pre-pressing type garbage compressor is characterized by comprising 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, and 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);

the pushing cylinder group (100) is used for pushing the pushing head module to move;

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).

10. The pre-compression trash compactor of claim 9 wherein the pusher module comprises a primary pusher and a secondary pusher;

the pushing cylinder group (100) comprises:

The main pushing oil cylinder (110) is used 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.