Disc type pressure filtration system

Abstract

The utility model relates to the technical field of pressure filtration, in particular to a disc type pressure filtration system which comprises a disc type pressure filter, concentration equipment, a pressure system, a controller and a monitoring system, the disc type pressure filter comprises a main body, a main shaft, a driver and a filter fan; the discharging end of the concentration equipment is communicated with the feeding end of the main body and is used for adjusting the feeding concentration of the disc type pressure filter; the monitoring system is used for monitoring parameter information of a filter cake, and the filter cake is formed on the filter fan; the pressurizing system is communicated with the pressurizing bin and is used for adjusting the pressure in the pressurizing bin; and the controller controls the rotating speed of the driver, the pressure of the pressurization system and the discharge concentration of the concentration equipment according to the parameter information of the filter cake monitored by the monitoring system. By detecting the parameters of the filter cake and adjusting the parameters of the pressure filter in combination with the feeding concentration and the corresponding energy consumption data, all the operation parameters can be automatically analyzed and adjusted, consumption reduction and operation cost reduction are achieved, and full-automatic unmanned operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure filtration, in particular to a disc type pressure filtration system. Background Art

[0002] Pressure filtration technology is an internationally recognized advanced dehydration technology. The disc pressure filter designed based on this technology is currently an advanced solid-liquid separation equipment in the world. After years of research and development, it has now reached a stage of mature technology and process. With the emergence of high-pressure disc pressure filters, especially the rapid development of high-pressure disc pressure filter technology in recent years, some users have reported that under the same processing volume and the same moisture conditions, compared with high-pressure disc pressure filters, disc pressure filters have shortcomings such as high energy consumption and heavy maintenance workload. Further measures need to be taken to reduce energy consumption, further improve the degree of automation, reduce operators, and reduce safety hazards.

[0003] At present, domestic disc pressure filters are constantly optimizing product structure and improving the performance of the whole machine. The mechanical aspect is mainly optimized from the aspects of reliability, maintainability, safety, energy consumption, etc.; the electrical aspect is mainly optimized from the aspects of reliability, environmental adaptability, stability, etc., but full automatic control has not yet been achieved, and operators are still required to assist in the operation. Due to the operator's untimely adjustment and the mismatch of various parameter adjustments, the disc pressure filter has high operating energy consumption. In addition, the neck of the filter fan is prone to wear and leakage, and the filter cloth is prone to leakage if it is damaged and not replaced in time, resulting in high energy consumption of the entire system. For this reason, it is an urgent problem to realize the iterative upgrade of fully automatic unmanned operation of the pressure filter, automatically analyze and adjust various operating parameters, achieve energy reduction, and reduce operating costs. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a disc-type pressure filtration system and a control method and device thereof, which can realize fully automatic unmanned operation of the pressure filter, achieve consumption reduction, and reduce operating costs.

[0005] In order to achieve the above-mentioned purpose, a disc pressure filtration system provided by an embodiment of the utility model comprises: a disc pressure filter, a concentration device, a pressurization system, a controller and a monitoring system;

[0006] The disc pressure filter comprises a main body, a main shaft, a driving machine and a filter fan; a pressurized chamber is arranged inside the main body, the filter fan is arranged on the main shaft, the main shaft is rotatably arranged on the main body, and the filter fan is located in the pressurized chamber, the driving machine is connected to the main shaft in a transmission manner, and drives the main shaft to rotate;

[0007] The discharge end of the concentrating device is connected to the feed end of the main body and is used to adjust the feed concentration of the disc pressure filter;

[0008] The monitoring system is used to monitor parameter information of the filter cake, and the filter cake is formed on the filter fan;

[0009] The pressurizing system is in communication with the pressurizing chamber and is used to adjust the pressure in the pressurizing chamber;

[0010] The controller controls the rotation speed of the driving machine, the pressure of the pressurizing system and the discharge concentration of the concentrating device according to the parameter information of the filter cake monitored by the monitoring system.

[0011] Furthermore, the pressurization system includes a low-pressure fan and a frequency converter cooperating with the low-pressure fan, and the frequency converter is electrically connected to the controller.

[0012] Furthermore, the pressurization system includes an air supply duct and a pressure sensor arranged in the air supply duct, and the pressure sensor is used to monitor the air pressure in the air supply duct.

[0013] Further, it also includes a monitoring system;

[0014] The disc-type pressure filtering system comprises a plurality of electrical pipes, and the monitoring system is used for monitoring the service life of each of the electrical pipes.

[0015] Furthermore, the disc-type pressure filtration system also includes a plurality of electrical components, and the monitoring system is used to monitor the service life of each of the electrical components.

[0016] Furthermore, it also includes an alarm;

[0017] The alarm is electrically connected to the monitoring system, and the alarm sounds an alarm according to the monitoring information of the monitoring system.

[0018] Furthermore, the alarm device includes a display screen, and the display screen is configured with a progress bar showing the percentage of the life cycle of each of the electrical components and each of the electrical pipes.

[0019] Furthermore, a concentration detector is provided at the filtrate water discharge outlet of the pressurized bin to monitor the concentration information of the filtrate water.

[0020] Furthermore, a liquid level sensor is provided in the pressurizing bin for monitoring the liquid level information of the material in the pressurizing bin.

[0021] Furthermore, the concentrating equipment is a deep cone concentrator.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a disc pressure filtering system, comprising: a disc pressure filter, a concentration device, a pressurizing system, a controller and a monitoring system; the disc pressure filter comprises a main body, a main shaft, a driving machine and a filter fan; a pressurizing bin is arranged inside the main body, the filter fan is arranged on the main shaft, the main shaft is rotatably arranged on the main body, and the filter fan is located in the pressurizing bin, the driving machine is connected to the main shaft by transmission, and drives the main shaft to rotate; the discharge end of the concentrating device is connected to the feed end of the main body, and is used to adjust the feed concentration of the disc pressure filter; the monitoring system is used to monitor the parameter information of the filter cake, and the filter cake is formed on the filter fan; the pressurizing system is connected to the pressurizing bin, and is used to adjust the pressure in the pressurizing bin; the controller controls the rotation speed of the driving machine, the pressure of the pressurizing system and the discharge concentration of the concentrating device according to the parameter information of the filter cake monitored by the monitoring system.

[0024] By detecting the parameters of the filter cake and adjusting the parameters of the pressure filter in combination with the feed concentration and the corresponding energy consumption data, it is able to automatically analyze and adjust the operating parameters to achieve energy saving, reduce operating costs, and realize fully automatic unmanned operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a disc-type pressure filtration system provided in an embodiment of the utility model.

[0027] Icons: 11-disc pressure filter; 12-concentration equipment; 13-pressurization system; 14-electrical components; 15-electrical pipe fittings. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1As shown, an embodiment of the utility model provides a disc pressure filtration system, comprising: a disc pressure filter 11, a concentration device 12, a pressurizing system, a controller and a monitoring system; the disc pressure filter 11 comprises a main body, a main shaft, a driving machine and a filter fan; a pressurizing bin is provided inside the main body, the filter fan is provided on the main shaft, the main shaft is rotatably provided on the main body, and the filter fan is located in the pressurizing bin, the driving machine is connected to the main shaft by transmission, and drives the main shaft to rotate; the discharge end of the concentrating device 12 is connected to the feed end of the main body, and is used to adjust the feed concentration of the disc pressure filter 11; the monitoring system is used to monitor the parameter information of the filter cake, and the filter cake is formed on the filter fan; the pressurizing system is connected to the pressurizing bin, and is used to adjust the pressure in the pressurizing bin; the controller controls the rotation speed of the driving machine, the pressure of the pressurizing system and the discharge concentration of the concentrating device 12 according to the parameter information of the filter cake monitored by the monitoring system.

[0030] The disc pressure filtration system provided in this embodiment includes a disc pressure filter 11, a concentration device 12, a pressure system, a controller and a monitoring system. Among them, the disc pressure filter 11 is the main body for performing filtration, which includes a main body, a main shaft, a driving machine and a filter fan. A closed pressure chamber is formed inside the main body, and a plurality of filter fans are arranged. All filter fans are arranged on the main shaft at intervals along the circumferential direction of the main shaft. The main shaft is rotatably arranged on the main body, and the filter fan is located in the pressure chamber. The driving machine is used to drive the main shaft to rotate. When in use, the main shaft is driven to rotate by the driving machine, thereby driving the filter fan arranged on the main shaft to rotate. The driving machine can be a driving motor, or an internal combustion engine or a hydraulic motor. The concentration device 12 is arranged upstream of the disc pressure filter 11, and is used to increase the feed concentration of the disc pressure filter 11. The discharge end of the concentration device 12 is connected to the feed end of the disc pressure filter 11, and the incoming material enters the disc pressure filter 11 after being processed by the concentration device 12. By setting a concentration device 12 upstream of the disc pressure filter 11, the feed concentration of the disc pressure filter 11 can be increased, thereby increasing the hourly processing volume, and further reducing the energy consumption of the disc pressure filter system. The monitoring system is used to monitor the parameter information of the filter cake, such as the thickness information of the filter cake; for example, the thickness information of the filter cake can be obtained by direct measurement, in which case the monitoring system can be a thickness gauge; or, the thickness information of the filter cake can also be obtained by weighing, in which case the monitoring system can be a weighing device. The pressurizing system is used to adjust the pressure in the pressurizing bin so that the filter fan can filter the incoming material and form a filter cake on the filter fan. The controller is electrically connected to the monitoring system, the driving machine, the pressurizing system and the concentration device 12. When in use, the controller controls the rotation speed of the driving machine, the pressure of the pressurizing system and the storage concentration of the concentration device 12 according to the monitoring information of the monitoring system, thereby achieving the purpose of reducing energy consumption. Optionally, the controller in this embodiment may adopt a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0031] Normally, the energy consumption data of a pressure filter comes from the following aspects: 1. In order to maintain the pressure inside the pressure filter, compressed air or a hydraulic system is usually required to provide power, which consumes energy. 2. During the filtration process, a pump is required to deliver the suspension or slurry into the filter, and the operation of the pump will also consume electrical energy. In this regard, the embodiment of the utility model calculates the energy consumption of the pressure filter based on the various parameters of the pressure filter, as well as the concentration of the input material and the parameters of the output filter cake, and when the filter cake does not meet the preset requirements, the parameters of the pressure filter are adjusted to ensure that the filter cake meets the preset requirements while ensuring that the energy consumption is reduced.

[0032] In specific implementation, the embodiment of the utility model controls the pressure value of the pressure filter as low as possible, and ensures the stability of the liquid level in the feed tank (or the minimum backflow) under the condition of fixed concentration feeding within the reasonable range of experience, and works at a relatively small pressure according to the experience value. After the pressure is fixed, the speed of the pressure filter fan is adjusted to achieve a balance in processing capacity. Furthermore, the thickness of the filter cake is detected. If the thickness is not enough, the speed is reduced, and the appropriate pressure and speed range is planned and solved at the same time. Otherwise, the pressure value is adjusted first and the speed is adjusted in association.

[0033] Among them, when the pressure filter is operating normally, the theoretical requirements are that the spindle speed is 0.4-1.5r / min, the filter cake thickness is 8-16mm, the pressure in the pressurized bin is stable, and the dehydration effect is optimal. In practice, the thickness of the filter cake of the pressurized filter is directly related to the spindle speed. Under the condition of certain incoming material concentration and properties, the spindle speed slows down. When the thickness of the filter cake is greater than 16mm, the filter cake has a large specific resistance and high moisture content, and the filter area is unloaded in advance. The early unloading in the filter area causes the filter cake to fall into the slurry tank, and the pressure loss in the pressurized bin is serious, resulting in a prolonged loading time of the low-pressure fan and increased power consumption. When the spindle speed is fast and the filter cake thickness is less than 8mm, the filter cake has good air permeability and a serious pressure loss in the pressurized bin, resulting in a prolonged loading time of the low-pressure fan and increased power consumption. In practice, when the parameters of the filter cake do not meet the preset requirements, the embodiment of the utility model adjusts the speed of the filter fan main shaft (that is, the pressurized filter fan speed parameter) in combination with the energy consumption data, and the speed is adjusted to about 1r / min, and the filter cake thickness is about 10mm, which ensures the moisture content of the product, and the pressure in the pressurized bin is stabilized at about 200kPa, with high efficiency and obvious energy-saving effect. The embodiment of the utility model detects the parameters of the filter cake and adjusts the parameters of the pressurized filter in combination with the feed concentration and the corresponding energy consumption data, and can automatically analyze and adjust various operating parameters, achieve consumption reduction, reduce operating costs, and achieve fully automatic unmanned operation.

[0034] In this embodiment, the driving machine adopts a driving motor, the driving motor is equipped with a frequency converter, and the controller controls the speed of the driving motor through the frequency converter.

[0035] An embodiment of the utility model provides a disc-type pressurized filtration system, wherein the pressurized system comprises a low-pressure fan and a frequency converter matched with the low-pressure fan, and the frequency converter is electrically connected to the controller.

[0036] In this embodiment, the pressurization system includes a low-pressure fan that provides power. The low-pressure fan is equipped with a frequency converter. The controller controls the speed of the low-pressure fan by controlling the frequency converter, thereby controlling the pressure in the pressurization chamber.

[0037] The embodiment of the utility model provides a disc-type pressurized filtration system, wherein the pressurized system 13 includes an air supply duct and a pressure sensor disposed in the air supply duct, and the pressure sensor is used to monitor the air pressure in the air supply duct.

[0038] The disc-type pressurized filtration system provided in an embodiment of the utility model further includes a monitoring system; the disc-type pressurized filtration system includes a plurality of electrical pipe fittings 15 , and the monitoring system is used to monitor the service life of each of the electrical pipe fittings 15 .

[0039] In this embodiment, the disc pressure filtration system includes a number of electrical pipe fittings 15, such as solenoid valves, electrically controlled butterfly valves and electrically controlled gate valves; the monitoring system is electrically connected to the above electrical pipe fittings 15, and is used to monitor the service life of each electrical pipe fitting 15 to achieve early warning and avoid affecting production efficiency.

[0040] The embodiment of the utility model provides a disc-type pressurized filtration system, which further includes a plurality of electrical components 14 , and the monitoring system is used to monitor the service life of each of the electrical components 14 .

[0041] In this embodiment, the disc pressure filtration system also includes a number of electrical components 14, such as the pressure sensor mentioned above and the concentration detector and liquid level sensor mentioned below; the monitoring system is electrically connected to the above electrical components 14 and is used to monitor the service life of each electrical component 14, so as to achieve early warning and avoid affecting production efficiency.

[0042] The disc-type pressurized filtration system provided by the embodiment of the utility model further includes an alarm; the alarm is electrically connected to the monitoring system, and the alarm sounds an alarm according to the monitoring information of the monitoring system.

[0043] The above content mentioned that the monitoring system is used to monitor the service life of each electrical component 14 and each electrical pipe fitting 15 in the disc pressure filtration system. When the monitoring system detects that the service life of each electrical component 14 and each electrical pipe fitting 15 in the disc pressure filtration system is lower than the preset value, the alarm can be used to promptly warn the operator to replace them in time to avoid affecting production.

[0044] An embodiment of the utility model provides a disc-type pressurized filtration system. Preferably, the alarm includes a display screen, and the display screen is configured with a progress bar of the life cycle percentage of each of the electrical components 14 and each of the electrical pipes 15.

[0045] It is understandable that in this embodiment, the alarm may also use a warning light, that is, each electrical component 14 and electrical pipe 15 has a corresponding warning light, so as to remind the operator to replace the corresponding parts in time when their service life expires to avoid affecting production.

[0046] The embodiment of the utility model provides a disc-type pressurized filtration system, wherein a concentration detector is provided at the filtrate water discharge outlet of the pressurized bin for monitoring the concentration information of the filtrate water.

[0047] In this embodiment, a concentration detector is also provided at the filtrate water outlet for detecting the concentration of the filtrate water; wherein, after the incoming material is processed by the disc pressure filter 11, filter cake and filtrate water are obtained. By detecting the concentration of the filtrate water, the use status of the filter cloth of the filter fan can be reflected. When the filtrate water concentration is higher than the preset value, the filter cloth of the filter fan needs to be replaced in time to reduce energy consumption.

[0048] An embodiment of the utility model provides a disc-type pressurized filtration system, wherein a liquid level sensor is provided in the pressurized bin for monitoring the liquid level information of the material in the pressurized bin.

[0049] In this embodiment, by providing a liquid level sensor to detect the liquid level of the material (liquid to be filtered) in the pressurized bin, air leakage of the filter fan can be reduced and energy consumption can be reduced.

[0050] Preferably, in this embodiment, the concentrating device 12 adopts a deep cone concentrator, which has a simple structure, good concentrating effect and low cost.

[0051] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disc pressure filtration system, characterized in that: include: Disc pressure filter (11), concentration equipment (12), pressurization system, controller and monitoring system; The disc pressure filter (11) comprises a main body, a main shaft, a driving machine and a filter fan; a pressure chamber is provided inside the main body, the filter fan is provided on the main shaft, the main shaft is rotatably provided on the main body, and the filter fan is located in the pressure chamber, the driving machine is in transmission connection with the main shaft, and drives the main shaft to rotate; The discharge end of the concentrating device (12) is connected to the feed end of the main body and is used to adjust the feed concentration of the disc pressure filter (11); The monitoring system is used to monitor parameter information of the filter cake, and the filter cake is formed on the filter fan; The pressurizing system is in communication with the pressurizing chamber and is used to adjust the pressure in the pressurizing chamber; The controller controls the rotation speed of the driving machine, the pressure of the pressurizing system and the discharge concentration of the concentrating device (12) according to the parameter information of the filter cake monitored by the monitoring system.

2. The disc pressure filtration system according to claim 1, characterized in that: The pressurization system includes a low-pressure fan and a frequency converter matched with the low-pressure fan, and the frequency converter is electrically connected to the controller.

3. The disc pressure filtration system according to claim 2, characterized in that: The pressurizing system (13) comprises an air supply duct and a pressure sensor arranged in the air supply duct, wherein the pressure sensor is used to monitor the air pressure in the air supply duct.

4. The disc pressure filtration system according to claim 1, characterized in that: It also includes monitoring systems; The disc-type pressure filtering system comprises a plurality of electrical pipes (15), and the monitoring system is used to monitor the service life of each of the electrical pipes (15).

5. The disc pressure filtration system according to claim 4, characterized in that: The disc-type pressure filtration system further comprises a plurality of electrical components (14), and the monitoring system is used for monitoring the service life of each of the electrical components (14).

6. The disc pressure filtration system according to claim 5, characterized in that: Also includes alarm; The alarm is electrically connected to the monitoring system, and the alarm sounds an alarm according to the monitoring information of the monitoring system.

7. The disc pressure filtration system according to claim 6, characterized in that: The alarm device comprises a display screen, and the display screen is provided with a progress bar showing the percentage of the life cycle of each of the electrical components (14) and each of the electrical pipes (15).

8. The disc pressure filtration system according to claim 1, characterized in that: A concentration detector is provided at the filtrate water outlet of the pressurized bin to monitor the concentration information of the filtrate water.

9. The disc pressure filtration system according to claim 1, characterized in that: A liquid level sensor is provided in the pressurizing bin for monitoring the liquid level information of the material in the pressurizing bin.

10. The disc pressure filtration system according to claim 1, characterized in that: The concentrating device (12) is a deep cone concentrator.

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