Intelligent proportional control conveying equipment for feeding slurry pump of filter press

Abstract

The invention belongs to the technical field of slurry conveying equipment, and discloses intelligent proportional control conveying equipment for a filter press feeding slurry pump, which comprises a hydraulic driving system, a slurry pressure regulating valve, a filter press feeding pump execution system and a comprehensive control system, and the comprehensive control system comprises an electric control PLC (Programmable Logic Controller) system and a pressure feedback system; the hydraulic driving system, the slurry pressure regulating valve, the filter press feeding pump execution system and the pressure feedback system are all electrically connected with the electric control PLC system through wires, the comprehensive control system is used for outputting instructions, and the system adopts a frequency converter, the electric control PLC system and the pressure feedback system to form closed-loop control. The frequency converter performs most energy-saving speed regulation after constant-voltage control, so that the operating power is reduced to the minimum, and the electric control PLC system provides equal-proportion instruction output to accurately control the pressure and flow of the whole system, so that the feed pump of the filter press performs accurate productivity output, and the whole electric control system adopts the latest process.

Description

Technical Field

[0001] The invention belongs to the technical field of mud conveying equipment, and in particular relates to intelligent proportional control conveying equipment for a filter press feed slurry pump. Background Art

[0002] At present, most of the feed pumps of filter presses in China are extensive basic conveying equipment. The field in which filter press feed pumps were first used was the ceramic field, where they only carried out simple mud conveying or pressure atomization. The working conditions were relatively simple, and only a single device was used. In the field of sewage treatment, the feed mud pump used in the supporting filter press will perform simple remote control due to the process requirements of the back-end filter press, including start-stop control, automatic high and low pressure control of double pumps, time-pressure step control, etc. Only gear pumps or automatic variable pumps are used in the hydraulic drive of the feed pump, and there is no precise flow control for the driving hydraulic oil. The pressure valve uses an ordinary valve or a solenoid valve, and only has a fixed pressure conversion function. There is no full-range pressure setting, which is not applicable to working conditions with high industrial control requirements.

[0003] With the requirements of industrial upgrading, energy conservation and environmental protection have become a necessary development route. The ceramic industry is in recession, and the energy consumption reduction of operating equipment will definitely be rapidly promoted. The energy consumption reduction must be combined with the electronic control system. Therefore, the present invention proposes an intelligent proportional control conveying equipment for the filter press feed slurry pump to solve the above-mentioned technical problems. Summary of the invention

[0004] The object of the present invention is to provide an intelligent proportional control conveying device for a filter press feed slurry pump to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent proportional control conveying equipment for a filter press feed slurry pump, comprising a hydraulic drive system, a mud pressure regulating valve, a filter press feed pump execution system and an integrated control system, wherein the integrated control system comprises an electronically controlled PLC system and a pressure feedback system, and the hydraulic drive system, the mud pressure regulating valve, the filter press feed pump execution system and the pressure feedback system are all electrically connected to the electronically controlled PLC system through wires, thereby improving the precise automatic control technology of the filter press feed pump, improving efficiency and reducing power consumption. The equipment is characterized by relatively complete process control, reasonable calculation logic, and scientific data support for parameter adjustment.

[0006] Preferably, the hydraulic drive system adopts a flow-controllable hydraulic drive system, and the full-range flow from 100%-15% can be programmed and controlled by the electronic control PLC system. The hydraulic drive system is the driving component of the present invention. According to the user's process requirements, the electronic control PLC system completes the flow supply of hydraulic oil in the full range, and the mud flow output of the entire equipment can be switched to any value in the full range with high accuracy.

[0007] Preferably, the mud pressure regulating valve adopts an adjustable pressure valve with logical calculation function and direct output, which is controlled by electronic PLC system programming. The mud pressure regulating valve is the pressure regulating part of the whole equipment, which can proportionally convert the mud pressure of 0-2MPa to the system pressure of 0-31.5MPa for full range control, and can perform logical operation of the curve according to user needs. It can accurately control the flow and pressure of the system hydraulic oil, thereby directly and accurately controlling the output of the plunger mud pump product, and can be programmed and edited according to process, time, pressure value, flow value, etc.

[0008] Preferably, the filter press feed pump execution system is a closed-loop control system, including precise control of system flow, precise control of system pressure, and pressure and flow control of mud pump production capacity output. The precise control of system flow, precise control of system pressure, and pressure and flow control of mud pump production capacity output all have programmable automatic control functions. The performance output of the mud pump is directly executed by the filter press feed pump execution system. The mud medium enters the system and flows out through the system to achieve pressure increase and flow control. The hydraulic drive system and the mud pressure regulating valve are combined to accurately control the flow and pressure. The filter press feed pump execution system has been optimized and improved to provide the command end with the most stable operating data. The system instructions are issued by the integrated control system, and the intelligent output output of the entire equipment is performed through the hydraulic drive system and the mud pressure regulating valve.

[0009] Preferably, the electronically controlled PLC system is electrically connected to the frequency converter through a wire, and the electronically controlled PLC system performs system oil pressure and flow control, and combines feedback signals to perform precise control of product flow and pressure. The pressure feedback system uses mud output point pressure feedback to perform automatic control operations of constant pressure and pressure regulation, and uses feed pump flow monitoring points to adjust flow ratio, adjust hydraulic oil output flow, and adjust system pressure value.

[0010] The integrated control system is responsible for the output of instructions. The system uses a frequency converter + electronic control PLC system + pressure feedback system to form a closed-loop control. The frequency converter performs the most energy-saving speed regulation after constant pressure control to reduce the operating power to a minimum. The electronic control PLC system provides proportional instruction output to enable precise control of the pressure and flow of the entire system, thereby enabling the filter press feed pump to output precise production capacity. The entire electronic control system uses the latest technology.

[0011] Preferably, the mud pressure regulating valve has a proportional conversion control function, and the electronically controlled PLC system accurately controls the output of the hydraulic oil flow, thereby accurately controlling the flow output of the equipment.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The present invention is provided with an integrated control system, which is responsible for the output of instructions. The system adopts a frequency converter + an electronic control PLC system + a pressure feedback system to form a closed-loop control. The frequency converter performs the most energy-saving speed regulation after constant pressure control to reduce the operating power to a minimum. The electronic control PLC system provides proportional instruction output to accurately control the pressure and flow of the entire system, thereby enabling the filter press feed pump to accurately output production capacity. The entire electronic control system is the latest technology.

[0014] 2. The present invention is provided with a hydraulic drive system, which is the driving component of the present invention. According to the user's process requirements, the flow supply of hydraulic oil is completed by the electronic control PLC system in the full range, so that the mud flow output of the entire equipment can be switched to any value in the full range with high accuracy.

[0015] 3. The present invention is provided with a mud pressure regulating valve, which is the pressure regulating part of the whole equipment. It can proportionally convert the mud pressure of 0-2MPa to the system pressure of 0-31.5MPa for full-range control, can perform logical operations of the curve according to user needs, can accurately control the flow and pressure of the system hydraulic oil, thereby directly and accurately controlling the output of the plunger mud pump product, and can be programmed and edited according to process, time, pressure value, flow value, etc.

[0016] 4. The present invention is provided with a filter press feed pump execution system. The performance output of the mud pump is directly executed by the filter press feed pump execution system. The mud medium enters the system and then flows out through the system to achieve pressure increase and flow control. The hydraulic drive system and the mud pressure regulating valve are combined to accurately control the flow and pressure. The filter press feed pump execution system is optimized and improved to provide the command end with the most stable operating data. The system command is issued by the integrated control system, and the intelligent output output of the entire equipment is achieved through the hydraulic drive system and the mud pressure regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0018] In the figure: 1. Hydraulic drive system; 2. Mud pressure regulating valve; 3. Filter press feed pump execution system; 4. Integrated control system. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, an embodiment of the present invention provides an intelligent proportional control conveying device for a filter press feed slurry pump, including a hydraulic drive system 1, a mud pressure regulating valve 2, a filter press feed pump execution system 3 and an integrated control system 4, wherein the integrated control system 4 includes an electric control PLC system and a pressure feedback system, and the hydraulic drive system 1, the mud pressure regulating valve 2, the filter press feed pump execution system 3 and the pressure feedback system are electrically connected to the electric control PLC system through wires.

[0021] In the embodiment of the present application, according to the needs of the customer, the integrated control system 4 issues an instruction. After the hydraulic drive system 1 and the mud regulating valve 2 are adjusted, the filter press feed pump execution system 3 performs equipment operation. After the equipment is operated, mud pressure and flow values ​​are formed, and the entire closed-loop control system is completed based on the values. All processes can be programmed and controlled according to user requirements.

[0022] Among them, the hydraulic drive system 1 adopts a flow-controllable hydraulic drive system. The full-range flow from 100%-15% can be programmed and controlled by the electronic control PLC system. According to the automatic control of the hydraulic drive system 1, the precise control and programmable control of the product output flow can be achieved.

[0023] Among them, the mud pressure regulating valve 2 adopts an adjustable pressure valve with logical calculation function and direct output. The mud pressure can be proportionally converted into the full range of the system of 0-31.5MPa. The full range of pressure of 0-31.5MPa corresponds to the mud pressure of 0-2MPa. The system pressure of 4-31.5MPa can be automatically controlled. The actual pressure required by the mud can be accurately controlled by the mud pressure regulating valve 2 and controlled by the electronic control PLC system programming.

[0024] Among them, the filter press feed pump execution system 3 is a closed-loop control system, including precise control of system flow, precise control of system pressure, pressure and flow control of mud pump capacity output. The precise control of system flow, precise control of system pressure and pressure and flow control of mud pump capacity output all have programmable automatic control functions.

[0025] Among them, the electronic control PLC system and the frequency converter are electrically connected through wires. After the product is at constant pressure, the frequency converter automatically adjusts the frequency according to the pressure maintaining stage to achieve energy-saving control. The electronic control PLC system controls the system oil pressure and flow, and combines the feedback signal to accurately control the product flow and pressure.

[0026] Among them, the pressure feedback system adopts the pressure feedback of the mud output point to perform automatic control operation of constant pressure and pressure regulation, and adopts the feed pump flow monitoring point to adjust the flow ratio, adjust the hydraulic oil output flow and adjust the system pressure value.

[0027] Among them, the mud pressure valve 2 is a standard product. The mud pressure valve 2 and the electronic control PLC system can accurately control the control of the drive system, which are both applied for the first time. The mud pressure regulating valve 2 has a proportional conversion control function. The characteristic of proportional control is precise control. It can be 0-100% proportional control, and the instructions can be precisely adjusted. The electronic control PLC system accurately controls the output of the hydraulic oil flow, thereby accurately controlling the flow output of the equipment. The mud pressure valve 2 uses the amplifier board to accurately control the system pressure, which can accurately control the mud pressure.

[0028] Working principle and usage process:

[0029] The integrated control system is responsible for the output of instructions. The system uses a frequency converter + an electronically controlled PLC system + a pressure feedback system to form a closed-loop control. The frequency converter performs the most energy-saving speed regulation after constant pressure control to minimize the operating power. The electronically controlled PLC system provides proportional instruction output to accurately control the pressure and flow of the entire system. The hydraulic drive system 1 is the driving component of the present invention. According to the user's process requirements, the electronically controlled PLC system completes the flow supply of hydraulic oil in the full range, which can switch the mud flow output of the entire equipment to any value in the full range with high accuracy.

[0030] The mud pressure regulating valve 2 can proportionally convert the mud pressure from 0-2MPa to the system pressure from 0-31.5MPa for full range control. It can perform curve logic operations according to user needs, and can accurately control the flow and pressure of the system hydraulic oil, thereby directly and accurately controlling the output of the plunger mud pump product. It can be programmed and edited according to the process, time, pressure value, flow value, etc.

[0031] The mud medium enters the filter press feed pump execution system and then flows out through the system to achieve pressure increase and flow control. The hydraulic drive system and mud pressure regulating valve are combined to accurately control the flow and pressure. The filter press feed pump execution system has been optimized and improved to provide the command end with the most stable operating data. The system instructions are issued by the integrated control system, and the intelligent production output of the entire equipment is achieved through the hydraulic drive system and mud pressure regulating valve.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent proportional control conveying device for a filter press feed slurry pump, characterized in that: The invention comprises a hydraulic drive system (1), a mud pressure regulating valve (2), a filter press feed pump execution system (3) and an integrated control system (4), wherein the integrated control system (4) comprises an electric control PLC system and a pressure feedback system, and the hydraulic drive system (1), the mud pressure regulating valve (2), the filter press feed pump execution system (3) and the pressure feedback system are all electrically connected to the electric control PLC system via wires.

2. According to claim 1, a filter press feed slurry pump intelligent proportional control conveying equipment is characterized in that: The hydraulic drive system (1) adopts a flow controllable hydraulic drive system, and the full range flow from 100% to 15% can be programmed and controlled by the electronic control PLC system.

3. The intelligent proportional control conveying device for filter press feed slurry pump according to claim 1, characterized in that: The mud pressure regulating valve (2) is an adjustable pressure valve with a logic calculation function and direct output. The mud pressure can be proportionally converted into a full range of 0-31.5 MPa system and is controlled by programming of an electronically controlled PLC system.

4. The intelligent proportional control conveying device for filter press feed slurry pump according to claim 1, characterized in that: The filter press feed pump execution system (3) is a closed-loop control system, including precise control of system flow, precise control of system pressure, and pressure and flow control of mud pump output capacity. The precise control of system flow, precise control of system pressure, and pressure and flow control of mud pump output capacity all have programmable automatic control functions.

5. The intelligent proportional control conveying device for filter press feed slurry pump according to claim 2, characterized in that: The electronically controlled PLC system is electrically connected to the frequency converter via a wire, and the electronically controlled PLC system controls the system oil pressure and flow, and accurately controls the product flow and pressure in combination with feedback signals.

6. The intelligent proportional control conveying device for filter press feed slurry pump according to claim 4, characterized in that: The pressure feedback system uses the pressure feedback of the mud output point to perform automatic control operation of constant pressure and pressure regulation, and uses the feed pump flow monitoring point to adjust the flow ratio, adjust the hydraulic oil output flow and adjust the system pressure value.

7. The intelligent proportional control conveying device for filter press feed slurry pump according to claim 3, characterized in that: The mud pressure regulating valve (2) has a proportional conversion control function, and the electronically controlled PLC system accurately controls the output of the hydraulic oil flow, thereby accurately controlling the flow output of the equipment.

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