Control method of oil pressing assembly line

Abstract

The invention relates to a control method for an oil pressing assembly line, and the control method comprises the steps: detecting the amount of oil in a hopper device in real time, and conveying the oil with a preset weight to an oil pressing disc assembly below; and the oil pressing disc assembly completing loading is controlled to be pre-pressed, and the pre-pressed oil pressing disc assembly is placed on a conveying disc of the conveying mechanism. And dynamically monitoring the working states of the plurality of squeezing devices, and obtaining the real-time stacking height, the stacking duration and the destacking duration of each device. The stacking requirement is predicted based on the state data, the conveying disc carrying the pre-pressing oil disc assembly is dispatched to pressing equipment in a stacking state, and the stacking amount of the pressing equipment is smaller than a preset threshold value; the empty conveying disc is dispatched to a squeezing device in a destacking state, and the oil squeezing disc assembly is stacked and destacked; and the conveying mechanism is controlled to return the cleaned and emptied oil pressing disc assembly to the to-be-fed area. And the conveying mechanism is controlled to convey the oil pressing disc assembly to the automatically-matched pressing equipment, and automatic adjusting and dispatching are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pressing, and particularly to a control method for an oil pressing production line. Background Art

[0002] A single vertically arranged oil pressing device can stack multiple oil pressing plate assemblies for pressing to improve the pressing efficiency. Among them, the oil pressing plates are stacked one by one through a stacking device, so as to realize vertical stacking and unstacking. When there are multiple oil pressing devices forming a production line, unified control and scheduling of the oil pressing plates are required.

[0003] However, in the existing production line, the scheduling of the oil pressing plates is intervened manually, and it is difficult to achieve automatic loading and unloading and automatic recycling. In particular, the stacking amounts of some pressing devices are unbalanced, resulting in too long waiting time for some pressing devices to be vacant, resulting in low production efficiency of the production line and difficult to achieve the optimal effect. There are technical problems such as poor coordination between the oil pretreatment and pressing links, low efficiency of manual scheduling of the conveying plates, easy blockage of the processes, and difficult automatic recycling of the oil pressing plates. Therefore, improvement is needed. Summary of the Invention

[0004] To overcome the problems existing in the related art, an embodiment of the present invention provides a control method for an oil pressing production line to solve the technical problems that manual intervention affects the production efficiency of the production line and the recycling rate of the oil pressing plates is low.

[0005] According to the first aspect of the embodiment of the present invention, a control method for an oil pressing production line is provided. The control method includes: Real-time detecting the amount of oil in the hopper device and conveying a preset weight of oil to the lower oil pressing plate assembly; Controlling the pre-pressing of the oil pressing plate assembly that has completed loading and placing the pre-pressed oil pressing plate assembly on the conveying plate of the conveying mechanism; Dynamically monitoring the working states of multiple pressing devices and obtaining the real-time stacking height, stacking duration, and unstacking duration of each device. The working states include stacking state, pressing state, unstacking state, and vacant state; Predicting the stacking demand based on the state data and scheduling the conveying plate carrying the pre-pressed oil pressing plate assembly to the pressing device in the stacking state and with a stacking amount less than the preset threshold; Scheduling the vacant conveying plate to the pressing device in the unstacking state to stack and unstack the oil pressing plate assembly; Controlling the conveying mechanism to return the emptied oil pressing plate assembly after cleaning to the area to be loaded.

[0006] In an embodiment, the real-time detecting the amount of oil in the hopper device and conveying a preset weight of oil to the lower oil pressing plate assembly includes: Real-time measuring the weight of the oil in the hopper device through a weighing module; When the weight of the oil material reaches the preset value, control the material bin assembly to stop feeding and open the gate to output the oil material; Start the smoothing mechanism to rotate and smooth the surface of the oil material in the oil pressing disc assembly at a preset rotation speed.

[0007] In one embodiment, before conveying a preset weight of oil material to the downward oil pressing disc assembly, it includes: Dynamically adjust the steaming duration of the steaming and roasting equipment according to the water content of the oil material; Convey the steamed oil material to the material bin assembly through the elevator.

[0008] In one embodiment, predicting the stacking demand based on the status data; wherein, Prioritize selecting the pressing equipment with the shortest remaining stacking duration; When the remaining stacking durations of multiple pressing equipments are the same, select the pressing equipment closest to the hopper device; Match the conveying tray carrying the pre-pressing oil disc assembly with the corresponding pressing equipment.

[0009] In one embodiment, controlling the conveying mechanism to return the emptied oil pressing disc assembly after cleaning to the area waiting for feeding, includes: The oil pressing disc assembly after unstacking is processed by the oil cleaning device, and the oil cleaning device is used to clean the residual oil in the oil pressing disc assembly; The cleaned oil pressing disc assembly is scheduled by the conveying mechanism to the slag cleaning device for removing the slag; The emptied oil pressing disc assembly is scheduled by the conveying mechanism to wait in the area for feeding.

[0010] In one embodiment, dynamically monitoring the working states of multiple pressing equipments, includes: Record and feedback the stacking height of the pressing equipment through the counting device to determine the current stacking quantity; Record the stacking / unstacking operation time of the pressing equipment through the timer, and trigger a warning message when it times out.

[0011] In one embodiment, when the stacking of the target pressing equipment times out, control the conveying mechanism to operate to convey the oil pressing disc assembly to the next pressing equipment.

[0012] In one embodiment, scheduling the empty conveying tray to the pressing equipment in the unstacking state, includes: Determine the production position of the pressing equipment in the unstacking state in the conveying direction of the conveying mechanism; When the pressing equipment in the unstacking state is behind the pressing equipment in the stacking state, schedule the conveying tray corresponding to the pressing equipment in the stacking state to the pressing equipment in the unstacking state; When there is no pressing device in the stacking state in front of the pressing device in the unstacking state, the empty conveying tray below the hopper device is scheduled to the pressing device in the unstacking state.

[0013] In one embodiment, the control method further includes: When the oil extraction tray assembly enters the oil cleaning device, control the oil discharge hood to be hermetically abutted against the conveying tray; Real-time monitor the gas pressure inside the oil discharge hood; If the pressure continuously falls below the preset threshold, control the oil discharge hood to reset and cover the conveying tray again; or, output a warning message.

[0014] In one embodiment, the control method further includes real-time detecting the conveying tray on the conveying mechanism below the hopper device; When the distance between adjacent two conveying trays exceeds the preset value, output a warning message.

[0015] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects: The conveying mechanism constructs an automatic recycling and conveying channel for the oil extraction tray assembly, which can enable the entire system to achieve automatic loading and unloading turnover control. The hopper device can automatically weigh and convey the oil material for pressing to the oil extraction tray assembly to form automatic feeding, and combined with the conveying mechanism, it is conveyed to any numbered pressing device, reducing the influence of human intervention factors. Based on the working state of the pressing device, control the conveying mechanism to convey the oil extraction tray assembly to the automatically matched pressing device, realizing automatic adjustment and scheduling, and greatly improving the oil extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0017] Figure 1 is a flowchart showing a control method of an oil extraction production line according to an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] Such as Figure 1As shown in the figure, the present invention provides a control method for an oil pressing production line. The control method includes the following steps: Step S101: Real-time detect the amount of oil in the hopper device and convey a preset weight of oil to the oil pressing disc assembly below. The hopper device is the quantitative weighing part for conveying oil to the oil pressing disc assembly, so as to keep the oil amount in each oil pressing disc assembly basically the same, and the oil yield rate of each oil pressing disc can be kept consistent during the pressing process, improving the oil extraction efficiency. Optionally, the hopper device is equipped with a weighing sensor, and the weighing sensor can output corresponding weighing signals. The weighing sensor can achieve dynamic metering. Among them, the material bin assembly continuously supplies materials to the hopper device and stops supplying materials when the signal converted by the weighing sensor reaches the preset value.

[0020] Control the oil pressing disc assembly that has completed loading to perform pre-pressing, and place the pre-pressed oil pressing disc assembly on the conveying tray of the conveying mechanism. The oil pressing disc assembly forms a tight oil space after pre-pressing, reducing the volume and discharging part of the air, preparing for pressing.

[0021] Step S102: Pre-press the oil in the oil pressing disc assembly to make the capacity and pressing height of each oil pressing disc assembly basically unified, keep the oil output consistent or the final oil extraction efficiency basically the same during the pressing process, and improve the oil output consistency of vertical stack pressing.

[0022] Multiple pressing devices are distributed on one side or both sides of the conveying mechanism, so as to realize that multiple pressing devices share the same conveying mechanism.

[0023] Step S103: Dynamically monitor the working states of multiple pressing devices, and obtain the real-time stacking height, stacking duration and unstacking duration of each device. The working states include stacking state, pressing state, unstacking state and empty state.

[0024] Multiple pressing devices are arranged side by side on the conveying mechanism. When the production line runs stably, at least part of the devices are in different working states. For example, at a certain moment, there are four pressing devices, namely No. 1 machine, No. 2 machine, No. 3 machine and No. 4 machine; No. 1 machine is in the stacking state, No. 2 machine is in the pressing state, No. 3 machine is in the unstacking state, and No. 4 machine is in the empty state; then both No. 1 machine and No. 4 machine have the need for stacking, while No. 2 machine and No. 3 machine have no need for stacking.

[0025] After a preset duration, the stacking of No. 1 machine is completed and it enters the pressing state from the stacking state; No. 2 machine enters the unstacking state from the pressing state; No. 3 machine enters the empty state from the unstacking state; No. 4 machine enters the stacking state from the empty state; thus, the production changes in turn.

[0026] Step S104: Predict the stacking demand based on the state data, and dispatch the conveying tray carrying the pre-pressed oil pressing disc assembly to the pressing device in the stacking state and with a stacking amount less than the preset threshold.

[0027] Step S105, dispatching the empty conveying tray to the pressing equipment in the unloading state, and stacking the unloaded oil pressing tray assembly; Step S106, controlling the conveying mechanism to return the cleaned and emptied oil pressing disc assembly to the loading area.

[0028] This method realizes the coordinated control of the whole oil pressing process through real-time status monitoring and dynamic scheduling algorithm. The core includes: accurate delivery of oil → pre-pressing treatment of oil pressing disc components → intelligent scheduling of pressing equipment → material residue recovery cycle, thereby constructing an automated oil pressing production line.

[0029] The conveying mechanism constructs an automatic recovery and conveying channel for the oil press disc assembly, which enables the entire system to achieve automatic loading and unloading turnover control. The hopper device can automatically weigh and convey the oil for pressing to the oil press disc assembly to form automatic loading, and combined with the conveying mechanism to convey it to any numbered pressing equipment, reducing the influence of human intervention factors. Based on the working status of the pressing equipment, the conveying mechanism is controlled to convey the oil press disc assembly to the automatically matched pressing equipment, realizing automatic adjustment and scheduling, greatly improving the oil pressing efficiency.

[0030] In step S101, the amount of oil in the hopper device is detected in real time, and a preset weight of oil is delivered to the oil pressing disc assembly below, including the following steps, wherein: Step S201, measuring the weight of the oil in the hopper device in real time through a weighing module.

[0031] Step S202, when the weight of the oil reaches a preset value, the material bin assembly is controlled to stop feeding and the gate is opened to output the oil.

[0032] Step S203, starting the smoothing mechanism to rotate, and smoothing the surface of the oil in the oil pressing disc assembly at a preset rotation speed.

[0033] The weighing module built into the hopper device monitors the weight of the oil in real time, wherein the hopper device can continuously receive the input of the oil. When the hopper device reaches the preset value: close the material bin feed gate, open the hopper bottom gate to output the oil. For example, when the weighing module detects that the hopper device reaches 10kg, close the material bin feed gate. The oil in the hopper device enters the oil pressing disc assembly below to achieve quantitative supply.

[0034] Start the smoothing mechanism to rotate the scraper at 20-30rpm to smooth the surface of the oil in the oil press disc assembly (eliminate gaps).

[0035] The smoothing mechanism levels the oil press plate assembly, which can evenly distribute the oil in the oil press plate assembly, thereby achieving balanced force in all directions during the stacking and pressing process. The evenly distributed oil can keep the force on the oil consistent and the oil output rate is basically the same.

[0036] Before step S101, the oil material needs to be pre-treated first, and this pre-treatment process includes: Dynamically adjust the steaming duration of the steaming and roasting equipment according to the water content of the oil material; the oil material needs to be steamed, roasted and sterilized to realize the processing and production of the oil liquid. Different raw materials require different steaming durations to meet the pressing requirements of the corresponding raw materials. For example, the water content of the oil material is detected by a near-infrared moisture meter (detection range: 5%-20%), and the steaming duration is dynamically adjusted: steaming duration = reference value × (1 + 0.05 × (water content rate - 10%)).

[0037] Convey the steamed oil material to the material bin assembly through a hoist; the material bin assembly can store the steamed oil material and quantitatively convey it to the hopper device. Among them, an automatically opened and closed material bin feeding gate is arranged at the bottom of the hopper device.

[0038] The oil pressing disc assembly after loading enters the pre-pressing station, and a pressure of 30 seconds is applied by a hydraulic device for pre-pressing to make the oil pressing disc assembly flat. Stack the pre-pressed oil pressing disc assemblies on the conveying disc, and match the oil pressing disc assemblies and the equipment based on the working state. The self-adaptive steaming and pre-pressing of the water content of the oil material to eliminate voids can improve the oil yield and reduce losses.

[0039] In one embodiment, predict the stacking demand based on the state data, so as to match the conveying disc with the corresponding pressing equipment. The following matching process is included: Give priority to selecting the pressing equipment with the shortest remaining stacking duration, so as to stack the pressing equipment within the shortest time and enter the pressing state. In this step, there are at least two pressing equipment with stacking requirements. For example, the pressing equipment with stacking requirements includes the vacant state and the stacking state. Further, there are two or more pressing equipment in the stacking state, and the pressing equipment with the shortest remaining stacking duration is preferentially matched with the conveying disc.

[0040] When the remaining stacking durations of multiple pressing equipment are the same, select the pressing equipment closest to the hopper device; Match the conveying disc carrying the pre-pressed oil disc assembly with the corresponding pressing equipment.

[0041] The remaining stacking durations of multiple pressing equipment are the same, that is, the number of oil pressing disc assemblies to be stacked is the same. Selecting the pressing equipment closest to the hopper device can enter the pressing state in the shortest time and improve the pressing efficiency.

[0042] In step S103, dynamically monitor the working states of multiple pressing equipment, including the following steps: The stacking height of the pressing equipment is recorded and fed back by a counting device to determine the current stacking quantity. The number of oil pressing tray assemblies that each pressing equipment can stack is preset. By recording and feeding back through a counter, the remaining stacking duration of the pressing equipment can be determined. Further, a height sensor is provided on the pressing equipment to determine the stacking height of the oil pressing tray assemblies, so as to recheck and determine the maximum stacking height of the oil pressing tray assemblies.

[0043] The stacking / unstacking operation time of the pressing equipment is recorded by a timer, and a warning message is triggered when it times out.

[0044] The timer records the operation time of the pressing equipment, and it can be judged whether the pressing equipment fails. Among them, the operation time includes the maximum stacking time and the maximum unstacking time of the oil pressing tray assemblies. When the timer exceeds the operation time, the management personnel need to be notified to check whether the pressing equipment fails.

[0045] Further, when the stacking of the target pressing equipment times out, the conveying mechanism is controlled to operate to convey the oil pressing tray assembly to the next pressing equipment. The pre-matched oil pressing tray assembly and the target pressing equipment are de-associated, so that the oil pressing tray assembly moves to the next pressing equipment with stacking requirements, so that the production line runs continuously, and the faulty pressing equipment is repaired without affecting the operation of the entire production line, improving the continuity. For example, when the stacking of the No. 3 machine times out (actual 18 min > standard 15 min), the controller immediately schedules the conveying tray to the standby No. 7 machine.

[0046] In step S105, scheduling the empty conveying tray to the pressing equipment in the unstacking state includes the following steps: Determine the production position of the pressing equipment in the unstacking state in the conveying direction of the conveying mechanism; When the pressing equipment in the unstacking state is behind the pressing equipment in the stacking state, the conveying tray corresponding to the pressing equipment in the stacking state is scheduled to the pressing equipment in the unstacking state; When there is no pressing equipment in the stacking state in front of the pressing equipment in the unstacking state, the empty conveying tray under the hopper device is scheduled to the pressing equipment in the unstacking state.

[0047] In this embodiment, the advantages of the conveying tray unstacking scheduling are as follows: If the unstacking equipment is located downstream of the stacking equipment, the remaining conveying tray after the stacking equipment takes away the oil pressing tray assembly can be directly used, which can avoid the empty running of the conveying tray.

[0048] If the unstacking equipment is located at the forefront of the production line, the standby empty conveying tray at the hopper device needs to be called, and the shortest movement path of the empty conveying tray can be called. Through the regulation of the empty conveying tray, the overall circular operation of the production line is realized.

[0049] In step S106, the conveying mechanism is controlled to return the cleaned and emptied oil pressing disc assembly to the loading area, including the following steps: The oil pressing plate assembly after unloading is processed by an oil cleaning device, and the oil cleaning device is used to clean the residual oil in the oil pressing plate assembly.

[0050] In one embodiment, the control method further includes: When the oil pressing disc assembly enters the oil cleaning device, the oil drain cover is controlled to seal against the conveying disc. The oil cleaning device cleans the oil remaining in the pipelines and gaps of the oil pressing disc assembly to avoid oil waste and avoid oil being sucked back by material residue.

[0051] Real-time monitoring of the gas pressure in the oil drain hood; If the pressure continues to be lower than the preset threshold, the oil drain cover is controlled to reset and re-cover the conveying plate; or, a warning message is output.

[0052] The oil drain cover is arranged on the conveying plate to form a closed space. Optionally, the gas source is controlled to deliver gas to the oil drain cover to directional squeeze the oil out of the conveying plate so that the oil can be recovered. Alternatively, the negative pressure mechanism is controlled to extract gas in the oil drain cover to directional extract the oil out of the conveying plate so that the oil can be recovered.

[0053] When the gas pressure in the oil drain hood is lower than the preset threshold, it means that the oil drain hood and the conveying tray are not tightly fitted and there is a leakage gap, which needs to be re-pressed and sealed.

[0054] When the gas pressure in the oil drain hood is lower than the preset threshold, there may be sealing defects or foreign matter, which requires manual troubleshooting.

[0055] The cleaned oil pressing disc assembly is dispatched by the conveying mechanism to the slag cleaning device for removing the slag. The slag cleaning device can separate the slag from the oil pressing disc assembly by dumping or adsorption, thereby removing the slag. After the slag is removed, the oil pressing disc assembly is empty, and the emptied oil pressing disc assembly is dispatched by the conveying mechanism to the loading area to wait.

[0056] The conveying mechanism is evenly spaced with conveying trays, which can carry and lift the oil pressing tray assembly. Each oil pressing tray assembly can be evenly distributed and delivered to the corresponding oil pressing equipment.

[0057] The control method further includes real-time detection of a conveying disc on a conveying mechanism below the hopper device; When the distance between two adjacent conveyor discs exceeds the preset value, a warning message is output.

[0058] The conveyor discs are evenly distributed in the conveying mechanism. When the distance between the conveyor discs is too large, it is difficult for the conveyor discs to effectively match the oil pressing equipment, which may lead to production risks. For example, the infrared rangefinder detects the distance between adjacent conveyor discs (standard value 40cm). When the distance between the 5# and 6# conveyor discs reaches 55cm, the machine will stop and alarm.

[0059] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The present application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present invention.

Claims

1. A control method for an oil pressing production line, characterized in that, The control method comprises: Real-time detection of the amount of oil in the hopper device, and delivery of a preset weight of oil to the oil pressing disc assembly below; Controlling the loaded oil pressing disc assembly to pre-press, and placing the pre-pressed oil pressing disc assembly on the conveying disc of the conveying mechanism; Dynamically monitor the working status of multiple pressing equipment and obtain the real-time stacking height, stacking time and unstacking time of each equipment. The working status includes stacking state, pressing state, unstacking state and vacant state; Predict the stacking demand based on the status data, and dispatch the conveyor tray equipped with the pre-pressing oil tray assembly to the pressing equipment with a stacking state and a stacking volume less than a preset threshold; Dispatch the empty conveyor tray to the unloading state of the pressing equipment, and stack the unloaded oil pressing tray components; The conveying mechanism is controlled to return the cleaned and emptied oil pressing disc assembly to the area to be loaded.

2. The control method according to claim 1, wherein The method of detecting the amount of oil in the hopper device in real time and delivering a preset weight of oil to the oil pressing disc assembly below includes: The weight of the oil in the hopper device is measured in real time through the weighing module; When the weight of the oil reaches the preset value, the material bin component is controlled to stop feeding and the gate is opened to output the oil; The smoothing mechanism is started to rotate to smooth the surface of the oil in the oil pressing disc assembly at a preset speed.

3. The control method according to claim 2, wherein Before delivering a preset weight of oil to the oil pressing plate assembly below, the method includes: Dynamically adjust the cooking time of steaming and baking equipment according to the water content of oil; The cooked oil is transported to the material bin assembly via the elevator.

4. The control method according to claim 1, wherein The stacking demand is predicted based on the status data; wherein, Prioritize the pressing equipment with the shortest remaining stacking time; When the remaining stacking time of multiple pressing equipment is the same, the pressing equipment closest to the hopper device is selected; Match the conveyor disc with the pre-pressing oil disc assembly to the corresponding pressing equipment.

5. The control method according to claim 4, wherein The control conveying mechanism returns the cleaned and emptied oil pressing disc assembly to the loading area, including: The unstacking oil pressing plate assembly is processed by an oil cleaning device, and the oil cleaning device is used to clean the residual oil in the oil pressing plate assembly; The cleaned oil pressing disc assembly is dispatched by the conveying mechanism to the slag cleaning device for removing the slag; The emptied oil pressing plate assembly is dispatched by the conveying mechanism to the loading area to wait.

6. The control method according to claim 1, wherein The dynamic monitoring of the working status of multiple pressing devices includes: The stacking height of the pressing equipment is recorded and fed back by the counting device to determine the current stacking quantity; The stacking / destacking operation time of the pressing equipment is recorded by a timer, and an alarm message is triggered when the time is exceeded.

7. The control method according to claim 6, wherein When the stacking of the target pressing equipment is overtime, the conveying mechanism is controlled to operate and convey the oil pressing disc assembly to the next pressing equipment.

8. The control method according to claim 1, wherein The pressing device for dispatching the empty conveyor tray to the unloading state comprises: Determine the production position of the pressing equipment in the unloading state in the conveying direction of the conveying mechanism; When the unloading state pressing device is behind the stacking state pressing device, the conveying tray corresponding to the stacking state pressing device is dispatched to the unloading state pressing device; When there is no pressing device in the stacking state in front of the pressing device in the unloading state, the empty conveying tray under the hopper device is dispatched to the pressing device in the unloading state.

9. The control method according to claim 1, wherein The control method also includes: When the oil pressing disc assembly enters the oil cleaning device, the oil drain cover is controlled to seal against the conveying disc; Real-time monitoring of the gas pressure in the oil drain hood; If the pressure continues to be lower than the preset threshold value, control the oil drainage hood to reset and cover the conveying tray again; or, output a warning message.

10. The control method according to claim 1, wherein The control method further includes detecting in real time the conveying tray on the conveying mechanism below the hopper device; When the distance between two adjacent conveying trays exceeds the preset value, output a warning message.

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