High-efficiency intelligent control equipment and method with online metering pumping amount

Abstract

The application discloses efficient intelligent control equipment and method with online metering pumping amount, which comprises a feeding gate valve, a single-cylinder plunger pump, a hydraulic system, a feeding screw and a PLC control system; the single-cylinder plunger pump comprises a main oil cylinder, a main pump body hopper and a discharging gate valve; the hydraulic system comprises a main oil pump, a secondary oil pump and a proportional control valve; when the PLC control system detects that the feeding gate valve reaches a closed position, the weight G1 of the material at the moment is obtained; when the PLC control system detects that the discharging gate valve reaches a closed position, the weight G2 of the material at the moment is obtained; the PLC control system accumulates the weight of the output material in each pumping process in any set time period and outputs the accumulated value on a display to realize the online metering purpose; and the PLC control system automatically adjusts the opening degree of the proportional control valve at the output end of the main oil pump of the hydraulic system according to the program set material weight G1 and G2 values, so as to control the running speed of the main oil cylinder of the single-cylinder plunger pump and realize automatic adjustment of the pumping output flow.

Description

Technical Field

[0001] This invention relates to the field of metering equipment and hydraulic pumping technology, specifically to a highly efficient intelligent control equipment and method for online metering of pumping volume. Background Technology

[0002] Traditionally, high-viscosity, poorly flowing fluids are transported primarily using plunger pumps. With the maturation of processing technologies, precise metering of the transported materials plays a crucial role. However, because the transported materials are non-Newtonian fluids with complex physical properties, a mature and reliable metering method is currently lacking.

[0003] Existing technologies often use level gauges to measure the material level at the feed inlet. However, due to inaccurate monitoring and feedback signals from level sensors, it is easy to cause errors in the output flow regulation of the plunger pump. Sometimes, the plunger pump piston may also be pumped dry after the material in the hopper is emptied, resulting in air accumulation in the conveying pipeline. This greatly increases the equipment operation and maintenance costs and affects pumping efficiency and equipment stability. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a highly efficient intelligent control equipment and method with online metering pumping capacity, which can meet the accurate metering requirements of materials with a moisture content greater than 75%, solve the problem of air accumulation in pipelines caused by the piston of the plunger pump idling during the conveying process, improve pumping efficiency, reduce equipment operation and maintenance costs, reduce energy consumption, and increase equipment service life.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] In a first aspect, the present invention provides a highly efficient intelligent control equipment with online metering and pumping capacity, including a feed gate valve, a single-cylinder plunger pump, a hydraulic system, a feeding screw, and a PLC control system;

[0007] The single-cylinder piston pump mainly includes a main cylinder, a main pump body hopper, and a discharge gate valve; the main cylinder is used to pump the material in the main pump body hopper out, and the discharge gate valve is set at the discharge port of the single-cylinder piston pump.

[0008] The upper end of the feed gate valve is connected to the material feeding system, and the lower end is connected to the feed screw inlet; the feed screw is equipped with several pressure sensing modules, and a feed screw outlet is provided below the feed screw, which is connected to the hopper of the main pump body;

[0009] The hydraulic system comprises a main oil pump, a secondary oil pump and a proportional control valve; the main oil pump is used to drive the main oil cylinder to realize the pumping process; the secondary oil pump is used to drive the opening and closing of the feeding gate valve and the discharging gate valve; the proportional control valve is arranged at the output end of the main oil pump, and the electrical signal input end of the proportional control valve is connected with the PLC control system and participates in the control;

[0010] The PLC control system is used to collect and process the pressure values transmitted by the pressure sensing module and convert them into weight values; when the PLC control system detects that the feeding gate valve reaches the closed position, the weight G1 of the material at this time is obtained, and when the PLC control system detects that the discharging gate valve reaches the closed position, the weight G2 of the material at this time is obtained, so as to obtain the weight G1-G2 of the output material in one pumping process; the PLC control system accumulates the weight of the output material in each pumping process in any set time period and outputs the accumulated value on the display to realize the online metering purpose; the PLC control system automatically adjusts the opening degree of the proportional control valve at the output end of the main oil pump of the hydraulic system according to the program set material weight G1 and G2 values, so as to control the running speed of the main oil cylinder of the single-cylinder plunger pump and realize the automatic adjustment of the pumping output flow.

[0011] Further, the hydraulic system further comprises a main oil cylinder reversing oil path connected between the proportional control valve and the main oil cylinder; the main oil cylinder is hydraulically driven and is provided with a retraction to position sensing switch, a pressurization sensing switch and a forward pushing to position sensing switch, so as to monitor and feed the position signal to the PLC control system to collect data, and the PLC control system controls the main oil cylinder reversing oil path to realize the reversing action of forward pushing and retraction, and when the main oil cylinder is forward pushed, the material starts to be transported to the pipeline.

[0012] Further, the hydraulic system further comprises a feeding gate valve oil cylinder reversing oil path connected between the secondary oil pump and the feeding gate valve, and the feeding gate valve is hydraulically driven and is provided with an opening to position sensing switch and a closing to position sensing switch, so as to monitor and feed the position signal to the PLC control system to collect data, and the PLC control system controls the feeding gate valve oil cylinder reversing oil path to realize the reversing action of opening and closing, and when the feeding gate valve is opened, the material starts to be fed, and when the feeding gate valve is closed, the material stops being fed.

[0013] Further, the hydraulic system discharge gate valve oil cylinder reversing oil circuit is connected between the secondary oil pump and the discharge gate valve, the discharge gate valve is driven by a hydraulic oil cylinder, and opening and closing position sensing switches are installed to monitor and feed position signals to the PLC control system to collect data, and the PLC control system controls the discharge gate valve oil cylinder reversing oil circuit to realize opening and closing reversing action, when the discharge gate valve is opened, the material starts to be transported to the external pipeline, and when the discharge gate valve is closed, the material stops being transported.

[0014] Further, the lower end of the feeding gate valve is connected with the feeding screw inlet flange through a first soft connection, the upper end flange of the first soft connection has the same size as the flange of the feeding gate valve, the lower end flange has the same size as the flange of the feeding screw inlet, and the first soft connection is fixed by bolt connection.

[0015] Further, the feeding screw outlet flange is connected with the main pump body hopper inlet flange of the single-cylinder plunger pump through a second soft connection, the upper end flange of the second soft connection has the same size as the feeding screw outlet, and the lower end flange has the same size as the main pump body hopper inlet flange of the single-cylinder plunger pump, and the second soft connection is fixed by bolt connection.

[0016] Further, the pressure sensing module defines its calibration coefficient in the PLC system, and the calibration coefficient is corrected by measuring the data difference of the quantitative material before and after the start of the feeding screw motor or the hydraulic motor, so that the final display data is the product of the actual measurement data and the calibration coefficient; the pressure sensing module is symmetrically installed between the feeding screw foot and the support frame and is fixed by bolt connection.

[0017] Further, the closed cavity formed between the feeding gate valve, the first soft connection, the feeding screw, the second soft connection, the main pump body hopper of the single-cylinder plunger pump and the discharge gate valve has a volume of more than ten times the volume of the single-cylinder plunger pump delivery cylinder.

[0018] Further, the feeding screw is an electric or hydraulic motor driven screw, which has the functions of stirring, crushing and transporting material, and forms pre-pressing on the transported material.

[0019] In the second aspect, the application provides a high-efficiency intelligent control method with online metering pumping amount, based on the above equipment, the method comprises:

[0020] After the PLC control system receives the start signal, the hydraulic system is started, the feed gate valve oil cylinder reversing oil way is switched to the open state, the feed gate valve is opened to start feeding, the PLC control system starts to detect the pressure sensor module value, until the value is greater than or equal to the minimum value G0 set in the PLC control system, the feed gate valve oil cylinder reversing oil way is switched to the closed state, the feed gate valve is closed, and the feeding is stopped;

[0021] Then the main oil cylinder reversing oil way is switched to the forward pushing state, the pressure sensor module value G1 at this time is detected and recorded, the main pump proportional control valve is opened and adjusted to the opening degree corresponding to G1 set by the computer, the main oil cylinder starts to push and extend, until the pressure sensing switch detects the position, the discharge gate valve oil cylinder reversing oil way is switched to the open state, the discharge gate valve starts to open, and the material starts to be pumped outward, until the main oil cylinder pushes to the position sensing switch detects the position, the main pump proportional control valve is closed, and the main oil cylinder stops moving and pumping material;

[0022] Then the discharge gate valve oil cylinder reversing oil way is switched to the closed state, the discharge gate valve is closed, the pressure sensor module value G2 at this time is detected and recorded, then the main oil cylinder reversing oil way is switched to the retraction state, the main pump proportional control valve is opened and adjusted to the opening degree corresponding to G2 set by the computer, the main oil cylinder starts to retreat, until the main oil cylinder retracts to the position sensing switch detects the position, the main pump proportional control valve is closed, and the main oil cylinder stops retracting, and then returns to the state after the hydraulic system is started, to start a new pumping cycle; the cycle is operated until the PLC control system receives the stop signal, and the hydraulic system stops;

[0023] The PLC control system accumulates the weight G1-G2 of the output material in each pumping process in any set time period, and outputs the accumulated value on the display to realize online metering.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] 1. The device has simple overall structure and convenient installation, has low modification cost and high reliability for the existing single-cylinder plunger pump, and the pressure sensor module with anti-shaking and anti-vibration functions and the flexible material connection ensure the accuracy of online metering data, and provide a solution capable of meeting the accurate online metering requirements of high-viscosity and poor-flowability fluid conveying materials;

[0026] 2. By automatically adjusting the pumping output flow, the purpose of reducing the energy consumption of the equipment is achieved; the problem of inaccurate monitoring and feedback signal of the hopper level sensor easily causing the output flow adjustment error of the plunger pump is avoided; the running speed of the single-cylinder plunger pump main oil cylinder is controlled by the PLC control system to ensure that the plunger pump feeding screw bin stores a certain amount of material, effectively solving the problem of pipeline gas collection caused by the emptying of the plunger pump piston, thereby greatly improving the pumping efficiency and reducing the equipment operation and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The composition schematic diagram of the high-efficiency intelligent control equipment with online metering pumping amount provided for the embodiment of the application is shown in the figure.

[0028] Figure 2 The flowchart of the high-efficiency intelligent control method with online metering pumping amount provided for the embodiment of the application is shown in the figure.

[0029] In the figure: 1-PLC control system; 2-hydraulic system; 201-main oil pump; 202-proportioning control valve; 203-main oil cylinder reversing oil circuit; 204-secondary oil pump; 205-feeding gate valve oil cylinder reversing oil circuit; 206-discharging gate valve oil cylinder reversing oil circuit; 3-feeding gate valve; 301-opening to position inductive switch; 302-closing to position inductive switch; 4-first soft connection; 5-discharging gate valve; 501-opening to position inductive switch; 502-closing to position inductive switch; 6-main oil cylinder; 601-retraction to position inductive switch; 602-pressurization inductive switch; 603-advance to position inductive switch; 7-feeding screw; 701-feeding screw feeding port; 702-feeding screw discharging port; 8-pressure sensor module; 9-feeding screw support frame; 10-feeding bin; 11-main pump body hopper; 12-second soft connection. DETAILED DESCRIPTION

[0030] Embodiment:

[0031] The technical solutions of the application will be further described below in combination with the drawings and embodiments.

[0032] Referring to Figure 1 the figure, the high-efficiency intelligent control equipment with online metering pumping amount provided by the embodiment mainly includes a feeding gate valve 3, a single-cylinder plunger pump, a hydraulic system 2, a feeding screw 7 and a PLC control system 1.

[0033] The single lever piston pump mainly comprises a main oil cylinder 6, a main pump body hopper 11 and a discharge gate valve 5, the main oil cylinder 6 is used for pushing the material in the main pump body hopper 11 to discharge, and the discharge gate valve 5 is arranged at the discharge port position of the single lever piston pump. The upper end of the feeding gate valve 3 is directly connected with the material feeding bin 10, and the lower end is connected with the feeding screw feeding port 701 flange through the first soft connection 4, and the opening to position inductive switch 301 and the closing to position inductive switch 302 are arranged in the feeding gate valve 3. The first soft connection 4 is made of flexible material, which is beneficial to reduce the influence of the force transmission of the connecting part on the measurement accuracy of the pressure sensing module.

[0034] The feeding screw 7 is an electric or hydraulic motor driven screw, which has the functions of stirring, crushing and conveying materials, and pre-pressing the conveying materials to ensure that the hopper material is full. The feeding screw 7 is fixed on the feeding screw support frame 9 through a plurality of pressure sensing modules 8, and a feeding screw discharge port 702 is arranged below the feeding screw 7, and the flange of the feeding screw discharge port 702 is connected with the inlet flange of the main pump body hopper 11 of the single lever piston pump through the second soft connection 12, and the second soft connection 12 is also made of flexible material, which is beneficial to reduce the influence of the force transmission of the connecting part on the measurement accuracy of the pressure sensing module.

[0035] The pressure sensing module 8 is used for detecting and feeding the process pressure to the PLC control system 1 to collect data, and has the functions of anti-shaking and anti-vibration, and the pressure sensing module 8 can define its calibration coefficient in the PLC control system 1, and the calibration coefficient K can be corrected by measuring the data difference of the quantitative material before and after the feeding screw motor or hydraulic motor is started, so that the final display data is the product of the actual measurement data and the calibration coefficient, thereby reducing the error and ensuring the accuracy of the measurement data, and the position is symmetrically distributed between the feeding screw foot and the support frame and is fixed by bolt connection.

[0036] The hydraulic system 2 comprises a hydraulic station main oil pump 201, a secondary oil pump 204 and a proportional control valve 202. The hydraulic station main oil pump 201 is a large flow pump, which is used to drive the main oil cylinder 6 to realize the pumping process, the secondary oil pump 204 is a small flow pump, which is responsible for driving the feeding gate valve 3 and the discharge gate valve 5 to open and close, and the proportional control valve 202 is arranged at the output end of the main oil pump 201, the proportional control valve 202 is connected with the PLC control system 1 and participates in the control through the electrical signal input end.

[0037] The PLC control system 1 is used to collect and process the pressure values transmitted by the pressure sensing module 8 and convert them into weight values, and obtain the weight of the material G1 when the PLC control system 1 detects that the inlet gate valve 3 reaches the closed position, and obtain the weight of the material G2 when the PLC control system 1 detects that the outlet gate valve 5 reaches the closed position, so as to obtain the weight G of the material transported in one pumping process (G=G1-G2). The PLC control system 1 can automatically adjust the opening degree of the proportional control valve 202 at the output end of the hydraulic system main oil pump according to the programmed material weight G1 and G2 values, so as to control the operating speed of the main oil cylinder of the single-cylinder plunger pump, realize the automatic adjustment of the pumping output flow, achieve the purpose of reducing the energy consumption of the equipment, and effectively solve the problem of pipeline gas collection caused by the empty beating of the plunger pump piston after the material is emptied, thereby greatly improving the pumping efficiency and reducing the operation and maintenance cost of the equipment.

[0038] Preferably, the PLC control system 1 can accumulate the output material weight in each pumping process within any set time period and output the accumulated value on the display to achieve the purpose of online metering. The closed cavity formed between the inlet gate valve 3, the first soft connection 4, the feeding screw 7, the second soft connection 12, the single-cylinder plunger pump main pump body hopper 11 and the outlet gate valve 5 is more than ten times the volume of the single-cylinder plunger pump delivery cylinder, so that the pressure change caused by the change in the gas volume in the closed cavity during the pumping process can be ignored.

[0039] Specifically, the hydraulic system further comprises a main oil cylinder reversing oil path 203 connected between the proportional control valve 202 and the main oil cylinder 6; the main oil cylinder 6 is hydraulically driven and is provided with a retraction-to-position sensing switch 601, a pressurization sensing switch 602 and a forward push-to-position sensing switch 603, which are used to monitor and feed position signals to the PLC control system 1 for data collection, and the PLC control system 1 controls the main oil cylinder reversing oil path 203 to realize the reversing action of forward push and retraction, and when the main oil cylinder 6 is pushed forward, the material starts to be delivered to the pipeline.

[0040] Specifically, the hydraulic system further comprises an inlet gate valve oil cylinder reversing oil path 205 connected between the secondary oil pump 204 and the inlet gate valve 3; the inlet gate valve 3 is hydraulically driven and is provided with an opening-to-position sensing switch 301 and a closing-to-position sensing switch 302, which are used to monitor and feed position signals to the PLC control system 1 for data collection, and the PLC control system 1 controls the inlet gate valve oil cylinder reversing oil path 205 to realize the reversing action of opening and closing, and when the inlet gate valve 3 is opened, the material starts to be fed, and when the inlet gate valve 3 is closed, the material stops feeding.

[0041] Specifically, the hydraulic system further comprises a discharge gate valve oil cylinder reversing oil path 206 connected between the secondary oil pump 204 and the discharge gate valve 5 driven by a hydraulic oil cylinder, which is provided with an opening-to-position inductive switch 501 and a closing-to-position inductive switch 502 for monitoring and feeding a position signal to the PLC control system 1 for data collection, and the PLC control system 1 controls the discharge gate valve oil cylinder reversing oil path 206 to realize the reversing action of opening and closing, when the discharge gate valve 5 is opened, the material starts to be transported to the external pipeline, and when the discharge gate valve 5 is closed, the material stops being transported.

[0042] Specifically, the PLC control system 1 comprises a PLC module and an electrical control system for collecting and feeding the opening-to-position inductive switch 301 of the feeding gate valve 3, the closing-to-position inductive switch 302 of the feeding gate valve 3, the retraction-to-position inductive switch 601 of the main oil cylinder 6, the pressurization inductive switch 602 of the main oil cylinder 6, the forward push-to-position inductive switch 603 of the main oil cylinder 6, the opening-to-position inductive switch 501 of the discharge gate valve 5, the closing-to-position inductive switch 502 of the discharge gate valve 5, and the pressure value transmitted by the pressure sensing module 8, and all automatic controls of the hydraulic system proportional control valve 201, the main oil cylinder reversing oil path 203, the feeding gate valve oil cylinder reversing oil path 205, and the discharge gate valve oil cylinder reversing oil path 206 are realized through computer setting program operation.

[0043] The material pumping control method of the present equipment is as follows in combination with the PLC control flow chart shown in the following Figure 2

[0044] After receiving the starting signal, the PLC control system 1 starts the hydraulic system 2, the feeding gate valve oil cylinder reversing oil path 205 is switched to the opening state, the feeding gate valve 3 is opened to start feeding, and when the opening-to-position inductive switch 301 detects the position, the feeding gate valve 3 stops moving and keeps the opening state, the PLC control system 1 starts to detect the value of the pressure sensing module 8, until the value is greater than or equal to the minimum value G0 set in the PLC control system 1, the feeding gate valve oil cylinder reversing oil path 205 is switched to the closing state, the feeding gate valve 3 starts to close, and when the closing-to-position inductive switch 302 detects the position, the feeding gate valve 3 stops moving and keeps the closing state, and the feeding is stopped.

[0045] ​Then the main cylinder reversing oil circuit 203 switches to the forward state, the value G1 of the pressure sensor module 8 at this time is detected and recorded, the main pump proportional control valve 202 is opened and adjusted to the opening degree corresponding to G1 set by the computer, the main cylinder 6 starts to push out, until the pressure sensing switch 602 detects the position, the discharge gate valve cylinder reversing oil circuit 206 switches to the open state, the discharge gate valve 5 starts to open, and the material starts to be pumped out. When the discharge gate valve opening sensing switch 501 detects the position, the discharge gate valve 5 stops moving and keeps open, until the main cylinder forward position sensing switch 603 detects the position, the main pump proportional control valve 202 is closed, and the main cylinder 6 stops moving and stops pumping material.

[0046] Then the discharge gate valve cylinder reversing oil circuit 206 switches to the closed state, the discharge gate valve 5 starts to close, when the discharge gate valve closing sensing switch 502 detects the position, the discharge gate valve 5 stops moving and keeps closed, the value G2 of the pressure sensor module 8 at this time is detected and recorded, then the main cylinder reversing oil circuit 203 switches to the retracted state, the main pump proportional control valve 202 is opened and adjusted to the opening degree corresponding to G2 set by the computer, the main cylinder 6 starts to retract, until the main cylinder retraction position sensing switch 601 detects the position, the main pump proportional control valve 202 is closed, and the main cylinder 6 stops retracting, then returns to the state after the hydraulic system 2 is started, a new pumping cycle starts, and the cycle continues until the PLC control system 1 receives a stop signal and the hydraulic system 2 stops.

[0047] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the essence of the present application should be covered within the protection scope of the present application.

Claims

1. A high efficient intelligent control equipment with online metering pumping quantity, characterized in that, It comprises a feeding gate valve, a single cylinder plunger pump, a hydraulic system, a feeding screw, and a PLC control system. The single cylinder plunger pump mainly comprises a main oil cylinder, a main pump body hopper, and a discharge gate valve. The feeding gate valve is coupled with a material feeding system at its upper end and coupled with a feeding screw feeding port at its lower end. The hydraulic system comprises a main oil pump, a secondary oil pump, and a proportional control valve. The PLC control system is used to collect and process pressure values transmitted by the pressure sensing module and convert them into weight values. The feeding gate valve is coupled with the feeding screw feeding port flange through a first soft connection. The feeding gate valve, the first soft connection, the feeding screw, the second soft connection, the main pump body hopper of the single cylinder plunger pump, and the discharge gate valve form a closed cavity with a volume of more than ten times the volume of the single cylinder plunger pump delivery cylinder. The hydraulic system further comprises a main oil cylinder reversing oil circuit connected between the proportional control valve and the main oil cylinder. The main oil cylinder is hydraulically driven and is equipped with a retracted position sensing switch, a pressurized sensing switch, and a forward pushing position sensing switch for monitoring and feeding position signals to the PLC control system for data collection. When the main oil cylinder is pushed forward, the material starts to be delivered to the pipeline. The hydraulic system further comprises a feed gate valve oil cylinder reversing oil path connected between the secondary oil pump and the feed gate valve, the feed gate valve being driven by a hydraulic oil cylinder, and provided with an open-to-position inductive switch and a close-to-position inductive switch for monitoring and feeding a position signal to a PLC control system to collect data, and the feed gate valve oil cylinder reversing oil path being controlled by the PLC control system to realize opening and closing reversing actions, when the feed gate valve is opened, the material starts to be fed, and when the feed gate valve is closed, the material stops being fed; The hydraulic system further comprises a discharge gate valve oil cylinder reversing oil path connected between the secondary oil pump and the discharge gate valve, the discharge gate valve being driven by a hydraulic oil cylinder, and provided with an open-to-position inductive switch and a close-to-position inductive switch for monitoring and feeding a position signal to a PLC control system to collect data, and the discharge gate valve oil cylinder reversing oil path being controlled by the PLC control system to realize opening and closing reversing actions, when the discharge gate valve is opened, the material starts to be pumped to an external pipeline, and when the discharge gate valve is closed, the material stops being pumped; A high-efficiency intelligent control method with online metering of a pumping amount comprises the following steps: After receiving a start signal, the PLC control system starts the hydraulic system, the feed gate valve oil cylinder reversing oil path is switched to an open state, the feed gate valve is opened to start feeding, the PLC control system starts to detect a value of a pressure sensing module, until the value is greater than or equal to a minimum value G0 set in the PLC control system, the feed gate valve oil cylinder reversing oil path is switched to a closed state, the feed gate valve is closed to stop feeding. Then, the main oil cylinder reversing oil path is switched to a forward pushing state, a value G1 of the pressure sensing module at this time is detected and recorded, the main pump proportional control valve is opened and adjusted to an opening degree corresponding to G1 set by a computer, the main oil cylinder starts to be pushed forward, until a forward pushing position inductive switch is detected, the discharge gate valve oil cylinder reversing oil path is switched to an open state, the discharge gate valve starts to be opened, the material starts to be pumped outward, until the forward pushing position inductive switch is detected, the main pump proportional control valve is closed, and the main oil cylinder stops moving to stop pumping the material. Then, the discharge gate valve oil cylinder reversing oil path is switched to a closed state, the discharge gate valve is closed, a value G2 of the pressure sensing module at this time is detected and recorded, then the main oil cylinder reversing oil path is switched to a retraction state, the main pump proportional control valve is opened and adjusted to an opening degree corresponding to G2 set by the computer, the main oil cylinder starts to be retracted, until a retraction position inductive switch is detected, the main pump proportional control valve is closed, and the main oil cylinder stops retracting, and then returns to the state after the hydraulic system is started to start a new pumping cycle; the cycle is repeated until the PLC control system receives a stop signal, and the hydraulic system stops. The PLC control system accumulates the weight G1-G2 of the material output in each pumping process in any set time period and outputs the accumulated value on a display to realize online metering.

2. The high efficient intelligent control equipment with online metering pumping quantity according to claim 1, characterized in that, The upper end flange mounting size of the first flexible connection is consistent with the flange size of the feed gate valve, the lower end flange mounting size is consistent with the flange size of the feeding screw feed port, and the first flexible connection is fixed by bolt connection.

3. The high efficient intelligent control equipment with online metering pumping amount according to claim 2, characterized in that, The upper end flange mounting size of the second flexible connection is consistent with the flange size of the feeding screw discharge port, the lower end flange mounting size is consistent with the flange size of the main pump body hopper inlet of the single-cylinder plunger pump, and the second flexible connection is fixed by bolt connection.

4. The high efficient intelligent control equipment with online metering pumping quantity according to claim 1, characterized in that, The pressure sensing module defines its calibration coefficient in the PLC system, and the calibration coefficient is corrected by measuring the data difference of the quantitative material before and after the start of the feeding screw motor or the hydraulic motor through multiple measurements before actual measurement, so that the final display data is the product of the actual measurement data and the calibration coefficient; the pressure sensing module is symmetrically distributed and installed between the feeding screw foot and the support frame, and is fixed by bolt connection.

5. The high efficient intelligent control equipment with online metering pumping quantity according to claim 1, characterized in that, The feeding screw is an electric or hydraulic motor driven screw, which has the functions of stirring, crushing and conveying materials, and forms pre-pressing on the conveyed materials.

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