Electrically driven high pressure backwash filter

Abstract

The utility model discloses electric power drive high pressure backwash filter, including jar body, the inner wall fixed connection of jar body has support disc, the utility model discloses through realizing full automation high -efficient backwash, need not manual operation: central control system linkage each component, differential pressure sensor real -time monitoring filter core block, automatic trigger backwash, rotary motor drives filter core rotation, cooperation even arrangement's flush head forms 360 degree dead angle scouring, and impurity is completely removed, and the washing efficiency is improved 40% or more, reduces equipment downtime 30% or more, and simultaneously this device can reduce energy consumption and maintenance cost, and the adaptability is strong: frequency conversion motor drive plunger type high pressure pump, can adjust pressure as needed, avoid filter core excessive loss, electric power drive gets rid of the dependence on gas source, hydraulic station, adapts to a variety of complex environment, component cooperation reduces energy loss and failure, and energy consumption is reduced 40% than traditional device, and the life of core component is prolonged 2 times or more, and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the fields of water treatment and hydraulic system technology, specifically to an electrically driven high-pressure backwash filter. Background Technology

[0002] In fields such as water treatment and hydraulic systems, filtration equipment is a core component for ensuring media cleanliness. Traditional backwashing filtration devices mostly rely on manual valve switching or pneumatic / hydraulic drives, which presents the following problems: 1. High manual operation intensity: It is necessary to stop the machine regularly to manually switch the flushing process, which results in low labor efficiency and the filter element is prone to clogging due to operation delays; 2. Insufficient flushing precision: Pressure adjustment relies on experience settings and cannot be dynamically adjusted according to the real-time clogging status of the filter element, often resulting in incomplete flushing or excessive pressure that damages the filter element. 3. High energy consumption and maintenance costs: Pneumatic / hydraulic systems require complex power transmission components, and problems such as oil leakage and air pressure decay occur frequently. In addition, high-pressure pipelines are prone to aging and failure due to long-term impact. 4. Poor environmental adaptability: It is difficult to apply in remote or special working conditions (such as areas without air supply / unstable power supply), which limits the versatility of the equipment. Although there are a few electrically driven backwashing devices in the existing technology, they generally suffer from insufficient driving power, simple control logic (such as fixed frequency flushing), and low structural integration, which cannot meet the needs of high-precision and high-reliability scenarios.

[0003] Therefore, it is necessary to study electrically driven high-pressure backwashing filters. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an electrically driven high-pressure backwash filter.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electrically driven high-pressure backwash filter, comprising a tank, a support plate fixedly connected to the inner wall of the tank, a rotating opening inside the support plate, a filter element rotatably connected inside the rotating opening, a support frame fixedly connected inside the filter element, a rotating shaft fixedly connected to the center of the support frame, one end of the rotating shaft penetrating the tank and fixedly connected to a rotary motor, a plunger-type high-pressure pump fixedly connected to the top of the tank, a variable frequency motor installed on the top of the plunger-type high-pressure pump, and the output end of the variable frequency motor driving the plunger-type high-pressure pump, an intelligent backwashing mechanism fixedly connected to the top of the tank, and a central control system installed on the outside of the tank, the central control system being electrically connected to the variable frequency motor, the plunger-type high-pressure pump, and the intelligent backwashing mechanism respectively; The intelligent backwashing mechanism includes an electric three-way solenoid valve assembly and a differential pressure sensor. The inlet of the electric three-way solenoid valve assembly is connected to a plunger-type high-pressure pump. The outlet of the electric three-way solenoid valve assembly is symmetrically connected to a three-way diverter pipe. The other two output ends of the three-way diverter pipe are connected to extension pipes. The other end of the extension pipe is connected to several evenly arranged flushing heads, and the other ends of the flushing heads penetrate the tank body and are used in conjunction with the filter element. The two ends of the differential pressure sensor are respectively installed at the inlet and outlet ends of the filter element.

[0006] The beneficial effects of this utility model are as follows: 1. This utility model achieves fully automated and efficient backwashing without manual operation: the central control system links all components, the differential pressure sensor monitors filter element blockage in real time, and automatically triggers backwashing; the rotary motor drives the filter element to rotate, and together with the evenly arranged flushing heads, forms a 360° no-dead-angle flushing, thoroughly removing impurities and improving flushing efficiency by more than 40%, reducing equipment downtime by more than 30%. At the same time, this device can reduce energy consumption and maintenance costs, and has strong adaptability: the variable frequency motor drives the plunger-type high-pressure pump, which can adjust the pressure as needed to avoid excessive wear of the filter element; the electric drive eliminates dependence on air source and hydraulic station, and is suitable for various complex environments; the coordinated operation of components reduces energy loss and failure, reducing energy consumption by 40% compared with traditional devices, extending the life of core components by more than 2 times, and reducing maintenance costs.

[0007] 2. This utility model establishes a linkage control system between the ceramic plunger of the plunger-type high-pressure pump, the tungsten carbide sealing assembly, the pressure sensor inside the tank, and the side wall overflow valve. When the pressure sensor detects that the pressure inside the tank exceeds the set value (adapting to the pressure requirements of different working conditions), it transmits the signal to the central control system in real time. The system immediately controls the overflow valve to open and release pressure. When the pressure is lower than the set value, the overflow valve closes, and the central control system adjusts the speed of the variable frequency motor to increase the output pressure of the plunger-type high-pressure pump, achieving dynamic pressure balance and avoiding pressure fluctuations that could damage the filter element or cause incomplete filtration. Furthermore, the combination of the ceramic plunger and the tungsten carbide sealing assembly significantly reduces the risk of pump leakage under high-pressure conditions and extends the service life of the plunger-type high-pressure pump. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is another schematic diagram of the structure of this utility model; Figure 3 This is a partial cross-sectional perspective view of the structure of this utility model; Figure 4 This is a partial cross-sectional three-dimensional view of the structure of this utility model from below; Figure 5 This is a three-dimensional schematic diagram of the use of the plunger-type high-pressure pump, variable frequency motor, and three-way diverter pipe of this utility model.

[0009] In the diagram: 1. Tank body; 2. Support plate; 3. Filter element; 4. Rotating shaft; 5. Rotary motor; 6. Plunger-type high-pressure pump; 7. Variable frequency motor; 8. Three-way diverter pipe; 9. Extension pipe; 10. Flushing head; 11. Return pipe; 12. Filter; 13. Control valve; 14. Pressure buffer tank. Detailed Implementation

[0010] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0011] like Figures 1 to 5 As shown, the electrically driven high-pressure backwash filter provided by this utility model includes a tank 1. A support plate 2 is fixedly connected to the inner wall of the tank 1. A rotating port is opened inside the support plate 2. A filter element 3 is rotatably connected inside the rotating port. A support frame is fixedly connected inside the filter element 3. A rotating shaft 4 is fixedly connected to the center of the support frame. One end of the rotating shaft 4 passes through the tank 1 and is fixedly connected to a rotary motor 5. A plunger-type high-pressure pump 6 is fixedly connected to the top of the tank 1. A variable frequency motor 7 is installed on the top of the plunger-type high-pressure pump 6, and the output end of the variable frequency motor 7 drives the plunger-type high-pressure pump 6. An intelligent backwashing mechanism is fixedly connected to the top of the tank 1. A central control system (not shown) is installed on the outside of the tank 1. The central control system is electrically connected to the variable frequency motor 7, the plunger-type high-pressure pump 6, and the intelligent backwashing mechanism. The intelligent backwashing mechanism includes an electric three-way solenoid valve assembly and a differential pressure sensor (not shown). The valve body of the electric three-way solenoid valve assembly is made of brass, and the internal valve core is made of wear-resistant ceramic material. The response time is no more than 0.5s. It can switch between three working conditions, namely "filtration", "backwashing" and "drainage", under the drive of the central control system. It connects the "medium inlet-filter element-medium outlet", "high pressure fluid-filter element reverse", and "filter element-drainage port" corresponding to the pathways. The feed port of the electric three-way solenoid valve assembly is connected to the plunger-type high pressure pump 6. The discharge port of the electric three-way solenoid valve assembly is symmetrically connected to a three-way diverter pipe 8. The other two output ends of the three-way diverter pipe 8 are connected to an extension pipe 9. The other end of the extension pipe 9 is connected to several evenly arranged flushing heads 10. The other ends of the flushing heads 10 penetrate the tank 1 and are used in conjunction with the filter element 3. The two ends of the differential pressure sensor are respectively installed at the liquid inlet and liquid outlet of the filter element 3.

[0012] refer to Figure 1 The plunger-type high-pressure pump 6 uses a ceramic plunger and a tungsten carbide sealing assembly, with a peak pressure capacity of 20MPa. A pressure sensor (not shown) is fixedly installed inside the tank 1 and is electrically connected to the central control system. An overflow valve (not shown) is installed on the side wall of the tank 1 and works in conjunction with the central control system to achieve stable control of the system pressure.

[0013] As a technical optimization of this utility model, the ceramic plunger of the plunger-type high-pressure pump 6 is linked with the tungsten carbide sealing assembly, the pressure sensor inside the tank 1, and the side wall overflow valve for coordinated control. When the pressure sensor detects that the pressure inside the tank 1 exceeds the set value (to adapt to the pressure requirements of different working conditions), it transmits the signal to the central control system in real time, and the system immediately controls the overflow valve to open and release pressure. When the pressure is lower than the set value, the overflow valve closes, and at the same time, the central control system adjusts the speed of the variable frequency motor 7 to increase the output pressure of the plunger-type high-pressure pump 6, thereby achieving dynamic pressure balance and avoiding damage to the filter element 3 or incomplete filtration caused by pressure fluctuations. Furthermore, the combination of the ceramic plunger and the tungsten carbide sealing assembly significantly reduces the risk of pump leakage under high-pressure conditions and extends the service life of the plunger-type high-pressure pump 6.

[0014] refer to Figure 1 The central control system uses a PLC controller as the core control unit. The core control unit is equipped with a touch screen human-machine interface, which can set parameters such as filtration pressure and backwash time, and display the equipment operating status in real time. It also has a data storage function, which can record parameters such as pressure, time and differential pressure change rate of each backwash to form an operation log. It also has a fault alarm module, which can prompt equipment faults through audible and visual alarms and display handling suggestions.

[0015] As a technical optimization of this utility model, multiple sets of working condition adaptation parameter templates are preset in the PLC core control unit. Operators can directly call the corresponding templates through the touch screen human-machine interface without manually adjusting each parameter. At the same time, the data storage module establishes a communication connection with the cloud database to realize remote backup and viewing of equipment operation logs. The fault alarm module adds a fault diagnosis algorithm, which can accurately locate faulty components (such as motor overload, overflow valve jamming, etc.) based on equipment operating parameters (such as the current of the variable frequency motor 7, the pressure fluctuation value of the plunger high-pressure pump 6, etc.) and display step-by-step maintenance guidance on the touch screen, reducing the difficulty of equipment maintenance and shortening the fault handling time.

[0016] refer to Figure 5 The variable frequency motor 7 is an industrial-grade high-torque, low-noise motor. The plunger-type high-pressure pump 6 is directly connected to the variable frequency motor 7 via a coupling. The housing of the variable frequency motor 7 adopts a waterproof and dustproof design with a protection level of not less than IP54. The speed can be adjusted according to the instructions of the central control system, and the output is 0.5-15MPa adjustable high-pressure power to drive the plunger-type high-pressure pump 6 to achieve medium pressurization. The filter element 3 is a stainless steel sintered mesh filter element or a polymer sintered filter element. The backwash trigger threshold set by the differential pressure sensor is that the pressure difference ΔP on both sides of the filter element 3 is ≥0.15MPa. When the pressure difference is detected to reach this threshold, a signal is sent to the central control system to trigger the backwash program.

[0017] As a technical optimization of this utility model, the speed adjustment of the variable frequency motor 7 is correlated with the differential pressure data of the filter element 3 detected by the differential pressure sensor. When the differential pressure sensor detects that the differential pressure ΔP of the filter element 3 is between 0.10-0.15MPa (close to the backwash threshold), the central control system finely adjusts the speed of the variable frequency motor 7 in advance, so that the output pressure of the plunger-type high-pressure pump 6 is maintained in the low-power standby range. When ΔP≥0.15MPa triggers backwashing, the variable frequency motor 7 automatically matches the speed according to the degree of blockage of the filter element 3 (judged by the differential pressure change rate), drives the plunger-type high-pressure pump 6 to output an adjustable high pressure of 5-15MPa. Combined with the characteristics of the stainless steel sintered mesh / polymer sintered material of the filter element 3, "low-pressure energy-saving standby and high-pressure precise flushing" is achieved. Compared with the traditional fixed speed drive mode, energy consumption is further reduced by 15%-20%, and damage to the polymer sintered filter element by high pressure impact is avoided.

[0018] refer to Figure 1 , Figure 3 and Figure 5 The inlet end of the electric three-way solenoid valve assembly is connected to a return pipe 11, the other end of the return pipe 11 is connected to a Y-type filter 12, the other end of the filter 12 is connected to a control valve 13, and the other end of the control valve 13 is connected to the tank body 1.

[0019] As a technical optimization of this utility model, in the return loop composed of return pipe 11, Y-type filter 12 and control valve 13, the filter screen precision of Y-type filter 12 is set to be consistent with that of filter element 3. When the equipment is in filtration mode, the central control system controls control valve 13 to remain in a half-open state, so that 10%-15% of the cleaning medium in tank 1 flows back to the inlet end of electric three-way solenoid valve group through return pipe 11 and Y-type filter 12, and mixes with the high-pressure medium output by plunger high-pressure pump 6. This not only continuously flushes the inside of electric three-way solenoid valve group to prevent impurities from causing valve body jamming, but also replenishes the high-pressure loop medium, reduces the no-load running time of plunger high-pressure pump 6, and improves the system operation stability.

[0020] refer to Figure 2 and Figure 3 The output end of the plunger-type high-pressure pump 6 is equipped with a pressure buffer tank 14. The pressure buffer tank 14 is equipped with an overflow valve (not shown) and the overflow valve is electrically connected to the central control system.

[0021] As a technical optimization of this utility model, the volume of the pressure buffer tank 14 is set to 5-15L (adapted according to the pump model) to match the rated flow of the plunger-type high-pressure pump 6, and a honeycomb buffer baffle is installed inside the tank. When the high-pressure medium output by the plunger-type high-pressure pump 6 enters the pressure buffer tank 14, it is dispersed and guided by the buffer baffle, weakening the pulse pressure generated by the medium flow (controlling the pressure pulse amplitude within ±0.2MPa). At the same time, the overflow valve in the pressure buffer tank 14 and the overflow valve in the tank body 1 form a dual pressure protection. When the system experiences instantaneous overpressure (such as a sudden pressure rise caused by the switching delay of the electric three-way solenoid valve group), the overflow valve in the pressure buffer tank 14 opens first to release pressure, avoiding direct impact of high pressure on the filter element 3 and the plunger-type high-pressure pump 6, further improving the anti-interference capability of the equipment under complex working conditions.

[0022] The working principle and usage process of this utility model are as follows: When using this high-pressure backwash filter, after starting the equipment, the central control system initializes and controls the electric three-way solenoid valve group in the intelligent backwash mechanism to switch to the "filtration" mode, connecting the "medium inlet - filter element 3 - medium outlet" passage. The medium to be treated enters the tank 1 and is filtered by the filter element 3 at the rotating port on the support plate 2. Impurities are intercepted on the inner wall of the filter element 3, and the clean medium is discharged from the medium outlet through the filter element 3. During this process, the differential pressure sensor monitors the pressure at the inlet and outlet of the filter element 3 in real time, and the pressure sensor in the tank 1 monitors the pressure inside the tank. All data are transmitted to the central control system, which displays the real-time operating status (such as pressure, flow rate, etc.) through the touch screen human-machine interface and records the operating data. When the differential pressure sensor detects a pressure difference ΔP ≥ 0.15 MPa across filter element 3, it sends a blockage signal to the central control system. The system immediately triggers the backwashing procedure: First, it controls the electric three-way solenoid valve group to switch to the "backwashing" mode, closing the media inlet and outlet passages and connecting the "high-pressure fluid - filter element 3 reverse" passage; then, it commands the variable frequency motor 7 to start, directly driving the plunger-type high-pressure pump 6 through the coupling. The plunger-type high-pressure pump 6 pressurizes the media and delivers it to the pressure buffer tank 14. The overflow valve in the pressure buffer tank 14 is linked with the central control system, coordinating with the pressure regulation inside the tank to maintain the high-pressure media pressure. The pressure is stabilized at 5-15 MPa. After stabilization, the high-pressure medium flows into the three-way diversion pipe 8 through the electric three-way solenoid valve group, and is distributed to the extension pipe 9 through the three-way diversion pipe 8. Finally, it is sprayed out by several evenly arranged flushing heads 10. At the same time, the central control system starts the rotary motor 5, drives the rotary shaft 4 to rotate the filter element 3 along the rotation port of the support plate 2, so that the flushing head 10 can flush the inner wall of the filter element 3 360° without dead angles. The stripped impurities flow with the fluid. Then, the central control system controls the electric three-way solenoid valve group to switch to the "sewage discharge" mode, connects the "filter element 3-sewage discharge port" passage, and the sewage containing impurities is discharged through the sewage discharge port. During backwashing, the circuit consisting of the return pipe 11, Y-type filter 12, and control valve 13 connected to the inlet end of the electric three-way solenoid valve group remains open. Some of the cleaning medium inside the tank 1 flows back to the electric three-way solenoid valve group through the control valve 13, Y-type filter 12, and return pipe 11 to assist in flushing the inside of the valve body and prevent impurities from remaining. When the differential pressure sensor detects that the differential pressure on both sides of the filter element 3 drops below 0.05MPa, the central control system determines that the flushing is complete, controls the rotary motor 5 to stop running, switches the electric three-way solenoid valve group back to the "filtration" mode, adjusts the frequency converter motor 7 to the normal filtration speed, and the plunger-type high-pressure pump 6 and pressure buffer tank 14 return to standby mode. The equipment re-enters the filtration stage. At the same time, the central control system automatically records the backwashing pressure, time, differential pressure change rate, and other parameters to the operation log. If abnormal pressure or motor overload occurs during operation, the fault alarm module will provide audible and visual alarm prompts and display the fault cause and handling suggestions on the touch screen.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power driven high pressure backwash filter comprising a tank (1) characterised in that: The inner wall of the tank (1) is fixedly connected to a support plate (2). The support plate (2) has a rotating opening inside. A filter element (3) is rotatably connected inside the rotating opening. A support frame is fixedly connected inside the filter element (3). A rotating shaft (4) is fixedly connected at the center of the support frame. One end of the rotating shaft (4) passes through the tank (1) and is fixedly connected to a rotary motor (5). A plunger-type high-pressure pump (6) is fixedly connected to the top of the tank (1). A variable frequency motor (7) is installed on the top of the plunger-type high-pressure pump (6), and the output end of the variable frequency motor (7) drives the plunger-type high-pressure pump (6). An intelligent backwashing mechanism is fixedly connected to the top of the tank (1). A central control system is installed on the outside of the tank (1). The central control system is electrically connected to the variable frequency motor (7), the plunger-type high-pressure pump (6), and the intelligent backwashing mechanism, respectively. The intelligent backwashing mechanism includes an electric three-way solenoid valve group and a differential pressure sensor. The inlet of the electric three-way solenoid valve group is connected to a plunger-type high-pressure pump (6). The outlet of the electric three-way solenoid valve group is symmetrically connected to a three-way diverter pipe (8). The other two output ends of the three-way diverter pipe (8) are connected to an extension pipe (9). The other end of the extension pipe (9) is connected to several evenly arranged flushing heads (10). The other end of several flushing heads (10) penetrates the tank body (1) and is used in conjunction with the filter element (3). The two ends of the differential pressure sensor are respectively installed at the inlet and outlet of the filter element (3).

2. The electrically driven high-pressure backwash filter according to claim 1, characterized in that: The plunger-type high-pressure pump (6) uses a ceramic plunger and a tungsten carbide sealing assembly. A pressure sensor is fixedly installed inside the tank (1) and is electrically connected to the central control system. An overflow valve is installed on the side wall of the tank (1) and is used in conjunction with the central control system.

3. The electrically driven high-pressure backwash filter according to claim 1, characterized in that: The central control system uses a PLC controller as the core control unit, and a touch screen human-machine interface is provided on the outside of the core control unit.

4. The electrically driven high-pressure backwash filter according to claim 1, characterized in that: The variable frequency motor (7) is an industrial-grade high-torque, low-noise motor, and the plunger-type high-pressure pump (6) is directly connected to the variable frequency motor (7) through a coupling.

5. The electrically driven high-pressure backwash filter according to claim 1, characterized in that: The inlet end of the electric three-way solenoid valve assembly is connected to a return pipe (11), the other end of the return pipe (11) is connected to a Y-type filter (12), the other end of the filter (12) is connected to a control valve (13), and the other end of the control valve (13) is connected to the tank body (1).

6. The electrically driven high-pressure backwash filter according to claim 1, characterized in that: The output end of the plunger-type high-pressure pump (6) is provided with a pressure buffer tank (14), and the pressure buffer tank (14) is provided with an overflow valve, which is electrically connected to the central control system.

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