Engineering waterway filter device and circulating cleaning pipeline

Abstract

The utility model discloses an engineering waterway filter device and a circulating cleaning pipeline. The filter device adopts a four-way shell and a baffle to separate a cavity, a filter element is arranged in a detachable sleeve and is connected with a water outlet end through a bent pipe, the shell is provided with a differential pressure sensor joint for monitoring the blockage degree of the filter element, and a bottom water escape valve supports back flushing. The circulating cleaning pipeline is integrated with an electric switch valve group, a standby filter and a PLC control system, when a pressure difference sensor detects a blocking threshold value, the PLC drives a valve to switch a water path, the standby filter is used for supplying water and carrying out back flushing on a filter element of the main filter, and flushing water is discharged through a water escape valve; the system also realizes remote monitoring and parameter setting through the 4G communication module and the HMI. The problems that a filter in a large-scale engineering waterway is difficult to clean and maintain and needs to cut off water are solved, filter element blockage automatic detection, non-water-cut-off backwashing and intelligent operation and maintenance are achieved, and system continuity and operation and maintenance efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of water purification, and in particular to an engineering water filter device and a circulating cleaning pipeline. Background Technology

[0002] In large-scale engineering water systems, filters are key equipment for water purification, effectively filtering out silt, rust, particulate impurities, and other contaminants from the water flow to protect downstream pipes and water-using equipment. Traditional filters typically use a fixed filter element structure, purifying water through interception. They are usually installed at the water inlet and require regular cleaning and maintenance.

[0003] Traditional filters typically remove impurities by manually disassembling the filter element or through simple backwashing. However, for large-scale engineering water systems, manual cleaning after filter element clogging is costly, time-consuming, and difficult to remove stubborn impurities from tiny gaps, leading to a continuous decline in filtration efficiency. The cleaning and maintenance efficiency is low and relies on manual intervention. Existing systems lack a mechanism for real-time monitoring of filter element clogging. Clogging is usually only detected by a significant drop in flow or manual inspection, making early warning impossible. The cleaning process requires manual switching of the water circuit or water shutdown, affecting the continuous operation of the engineering system. Dynamic clogging detection and automatic cleaning cannot be achieved. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an engineering water filter device and a circulating cleaning pipeline.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an engineering water filter device, comprising a filter housing, a baffle plate, and a filter element; the filter housing has a four-way structure, and a baffle plate is provided inside to divide its internal cavity into a second cavity and a first cavity; the first cavity is connected to the water inlet end and to the filter element end and the drain valve end; the filter element end is connected to the second cavity through a bend pipe; a filter element mounting seat is provided at the upper end of the first cavity, and a filter element is installed above the filter element mounting seat. The filter element is installed in a top-removable and sealed sleeve, and a circular cylindrical cavity is formed between the filter element and the sleeve. One side of the circular cylindrical cavity is connected to the bend pipe, and the bend pipe is connected to the second cavity.

[0006] Preferably, the filter element is one or any combination of a hollow cylindrical ceramic filter element, a hollow cylindrical composite cotton filter element, and a hollow cylindrical stainless steel mesh filter element.

[0007] Preferably, the bend is installed on the upper side of the sleeve, and the cavity between the bend and the bottom of the sleeve is used for water sedimentation.

[0008] Preferably, the filter housing is provided with a first differential pressure sensor connector and a second differential pressure sensor connector; the first differential pressure sensor connector communicates with a first cavity; the second differential pressure sensor connector communicates with a second cavity; and differential pressure sensors are installed on the first differential pressure sensor connector and the second differential pressure sensor connector.

[0009] Preferably, the bottom of the filter housing is provided with a connecting flange for a drain valve.

[0010] This utility model also discloses a circulating cleaning pipeline including a drain valve, a filter as described above, a differential pressure sensor, and a set of switching valves on the circulating pipeline; a first switching valve is provided at the water inlet end, the first switching valve is connected to one end of the filter, a drain valve is installed at the bottom of the filter, and the other end of the filter is provided with a bend end connected to a third switching valve, the third switching valve is connected to a fourth switching valve through a tee; a second switching valve is connected in parallel to the front end of the first switching valve through a tee; the front end of the second switching valve is connected to a standby filter, the standby filter is connected to the tee between the third and fourth switching valves through a water pipe.

[0011] Preferably, the first, second, third, and fourth switching valves are electric ball valves of model D641X-16Q, which include an electric actuator and a ductile iron valve body; the drain valve is an electric butterfly valve of model D941X-16C, which consists of an electric actuator and a carbon steel valve body.

[0012] Preferably, it also includes a PLC controller, a communication module, and a touchscreen HMI (Human Machine Interface); the PLC controller adopts a Siemens S7-1200 series PLC, which has a CPU module, a digital input / output module, an analog input module, an Ethernet interface, and an RS485 interface; the communication module adopts an IoT USR-G780 series 4G DTU communication module, which integrates a 4G communication antenna, supports the TCP / IP protocol, and connects to the PLC controller through an RS485 interface; the touchscreen HMI is equipped with an LCD screen and a touch operation panel, and communicates with the PLC controller through an Ethernet interface.

[0013] Preferably, the differential pressure sensor continuously monitors the pressure difference between the first cavity and the second cavity of the filter and transmits the analog signal to the analog input module of the PLC controller.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention uses a differential pressure sensor to monitor the filter element clogging status in real time, and realizes quantitative feedback of the degree of clogging;

[0015] The design incorporates a backwashable water circuit structure and a backup filter switching system, enabling filter cleaning and replacement without interrupting water supply.

[0016] It integrates a PLC controller, communication module and HMI human-machine interface to realize differential pressure alarm, automatic water circuit switching and remote monitoring, improve the system's intelligence level and reduce operation and maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the circulating cleaning pipeline of this utility model;

[0018] Figure 2 This is a top view of the circulating cleaning pipeline of this utility model;

[0019] Figure 3 This is a perspective view of the circulating cleaning pipeline of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the filter of this utility model.

[0021] Figure 5 This is a perspective view of the filter of this utility model.

[0022] Figure 6 This is an exploded view of the filter of this utility model.

[0023] Figure 7 This is a schematic diagram of the cleaning process of the filter of this utility model.

[0024] In the diagram: First switch valve 1, Second switch valve 2, Drain valve 3, Filter 4, Differential pressure sensor 5, Third switch valve 6, Fourth switch valve 7, Bend 8, Spare filter 9, Barrier plate 41, Filter element 42, Filter element mounting base 43, Second cavity 44, First differential pressure sensor connector 45, Second differential pressure sensor connector 46, First cavity 47, Sleeve 48, Flange cover 49. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0026] For a specific embodiment 1, please refer to Figure 1 , 4 5. This embodiment provides an engineering water system filter device, including a filter 4 comprising a filter housing 40, a baffle plate 41, and a filter element 42; used for filtering water in large engineering water systems and can be cleaned and maintained according to pressure difference.

[0027] The filter housing 40 has a four-way structure, and a baffle plate 41 is provided inside to divide the internal cavity into a second cavity 44 and a first cavity 47. The first cavity 47 is connected to the water inlet end and to the filter element 42 end and the drain valve 3 end. The filter element 42 end is connected to the second cavity 44 through a bend 8. A filter element mounting seat 43 is provided at the upper end of the first cavity 47, and the filter element 42 is installed above the filter element mounting seat 43. The filter element 42 is installed in a top detachable and sealed sleeve 48, and a circular cylindrical cavity is formed between the filter element 42 and the sleeve 48. One side of the circular cylindrical cavity is connected to the bend 8, and the bend 8 is connected to the second cavity 44.

[0028] It should be further noted that, in this embodiment, the filter element 42 is a hollow cylindrical ceramic filter element; in addition to hollow cylindrical ceramic filter elements, it can also be a filter element made of hollow cylindrical composite cotton, stainless steel mesh and other materials that can purify water.

[0029] In this embodiment, the sleeve 48 is a circular sleeve with a detachable sealing device at the top. The top of the sleeve 48 is sealed with a sealing flange cover 49 and bolts, allowing the filter element 42 to divide the sleeve into two independent spaces. Water enters from the first cavity 47, passes through the filter element 42, and then sequentially enters the bend 8 and the second cavity 44 before exiting through a pipe. Besides the aforementioned flange cover 49 sealing connection, threaded caps and other forms of detachable and sealed structures can also be used to facilitate cleaning or replacement of the internal filter element 42.

[0030] In this embodiment, the bend 8 is installed on the upper side of the sleeve 48. Since there is a cavity between the bend 8 and the bottom of the sleeve 48, the cavity can serve as a water sedimentation chamber. A small amount of impurities that are not filtered by the filter element 42 will settle in the cavity.

[0031] In this embodiment, a first differential pressure sensor connector 45 and a second differential pressure sensor connector 46 are provided on the filter housing 40; the first differential pressure sensor connector 45 is connected to the first cavity 47; the second differential pressure sensor connector 46 is connected to the second cavity 44; differential pressure sensors are installed on the first differential pressure sensor connector 45 and the second differential pressure sensor connector 46, and the differential pressure sensors read the pressure difference between the first cavity 47 and the second cavity 44 to provide feedback on the degree of clogging of the filter element 42, thereby determining whether cleaning or flushing maintenance is required.

[0032] It should be further explained that a drain valve 3 is connected to the bottom of the filter housing 40. When the filter element 42 becomes clogged, the water flow direction can be changed to flush the filter element 42 with water, which can then be discharged through the drain valve 3. Specifically, originally, water enters from the first cavity 47, passes through the filter element 42, and then sequentially enters the bend 8 and the second cavity 44 before being discharged through the pipe. By changing the water flow direction, water enters from the second cavity 44, then sequentially enters the bend 8, passes through the filter element 42, enters the first cavity 47, and finally is discharged through the drain valve 3.

[0033] For a specific embodiment 2, please refer to Figure 1 , 2 3; This embodiment provides a circulating cleaning pipeline, which includes a drain valve 3, a filter 4, a differential pressure sensor 5, and a set of switching valves on the circulating pipeline; a first switching valve 1 is provided at the water inlet, and the first switching valve 1 is connected to one end of the filter 4. The drain valve 3 is installed at the bottom of the filter 4, and the other end of the filter 4, i.e., the end of the bend 8, is connected to the third switching valve 6. The third switching valve 6 is connected to the fourth switching valve 7 through a tee; a second switching valve 2 is connected in parallel to the front end of the first switching valve 1 through a tee; the front end of the second switching valve 2 is connected to a spare filter 9, and the spare filter 9 is connected to the third switching valve 6 and the fourth switching valve 7 through a water pipe and a tee.

[0034] Regarding the above technical solution, it should be noted that when the first switch valve 1 is open and the second switch valve 2 is closed, water enters the filter 4 from the first switch valve 1. After filtration, the water flows out through the bend 8, the third switch valve 6, and the fourth switch valve 7. The inner wall of the filter element 42 filters impurities from the water, meaning the water flows from the inner wall of the filter element 42 to the outer wall. Please refer to [reference needed]. Figure 7 When the differential pressure sensor 5 on filter 4 reaches the differential pressure threshold, the controller sends a reminder to replace or clean filter element 42. At this time, the fourth switch valve 7 and the first switch valve 1 are closed. Water enters from the second switch valve 2 and passes through the backup filter 9. The backup filter 9 introduces water to the third switch valve 6 and enters the filter 4 in reverse through the bend pipe 8. During this process, water flows from the outer wall of filter element 42 to the inner wall, which will backwash the impurities on the inner wall. The flushed water flows out from the drain valve 3.

[0035] It should be further explained that in some pipelines where water cannot be shut off, if filter element 42 needs to be replaced, the first switch valve 1 and the third switch valve 6 are closed, and the second switch valve 2 is opened. Water enters the pipeline through the spare filter 9 and the fourth switch valve 7 in sequence. At this time, the top flange cover of filter 4 can be removed to take out filter element 42 for thorough cleaning or replacement.

[0036] Regarding the above technical solution, it should be noted that, in order to achieve intelligent control, the first switching valve 1, the second switching valve 2, the third switching valve 6, and the fourth switching valve 7 are all electric ball valves of model D641X-16Q, which include electric actuators and ductile iron valve bodies; their electric actuators are equipped with 0-10V or 4-20mA standard signal input ports. The electric actuators receive control signals output from the PLC controller and drive the valve core to rotate, thereby realizing the opening, closing, and opening degree adjustment of the valves; the drain valve 3 is an electric butterfly valve of model D941X-16C, which consists of an electric actuator and a carbon steel valve body.

[0037] Based on specific embodiments 1 and 2, this embodiment also includes a PLC controller, a communication module, and a touch screen HMI human-machine interface;

[0038] The PLC controller uses a Siemens S7-1200 series PLC as its control core, featuring a CPU module, digital input / output modules, analog input modules, and multiple communication interfaces (Ethernet interface, RS485 interface, etc.). The digital input modules connect to the status feedback signals of each remotely controlled valve, while the analog input modules receive the differential pressure analog signal output from differential pressure sensor 5. The PLC controller processes and analyzes the input signals through its internal preset program, logically determines the filter element clogging status based on the differential pressure threshold, and sends control commands to the digital output modules to drive the remotely controlled valves, achieving functions such as water circuit switching and automatic filter element cleaning. Simultaneously, it stores and transmits system operation data through the communication interfaces.

[0039] The USR-G780 series 4G DTU communication module for IoT integrates a 4G communication antenna and supports the TCP / IP protocol. One end connects to the PLC controller via an RS485 interface, while the other end establishes a communication link with a remote server via a 4G network. The 4G DTU communication module packages and uploads differential pressure sensor data and valve status data collected by the PLC controller to the remote server. Simultaneously, it receives control commands from the remote control terminal and transmits them to the PLC controller, enabling remote data interaction and control.

[0040] The touchscreen HMI (Human Machine Interface) is equipped with an LCD screen and a touch control panel, and communicates with the PLC controller via an Ethernet interface. Operators can view real-time operating parameters on the HMI, including the pressure difference between the first and second chambers 47 and 44 of the filter, the opening and closing status of each remote-controlled valve, and the water flow direction. They can also set parameters such as the pressure difference threshold and filter element cleaning time via touch operation, and manually control the opening and closing of each remote-controlled valve, as well as start and stop the filter element cleaning program, enabling convenient on-site operation and monitoring.

[0041] Furthermore, the differential pressure sensor 5 continuously monitors the pressure difference between the first cavity 47 and the second cavity 44 of the filter and transmits the analog signal to the analog input module of the PLC controller. When the pressure difference reaches a preset threshold inside the PLC controller, the PLC controller determines that the filter element 42 is blocked and immediately sends an alarm command to the HMI (Human Machine Interface). After receiving the command, the HMI triggers the audible and visual alarm device, and at the same time, the PLC controller pushes the alarm information (including equipment number, alarm type, time, etc.) to the remote control terminal (mobile APP, monitoring center computer) through the 4G DTU communication module to notify maintenance personnel, thereby realizing filter element blockage detection and alarm.

[0042] Furthermore, after issuing an alarm signal, the PLC controller executes an automatic cleaning operation according to a preset program. First, the PLC controller sends a close signal to the digital output ports corresponding to the fourth switch valve 7 and the first switch valve 1, and the electric ball valve closes upon receiving the signal. Next, it sends an open signal to the second switch valve 2, allowing water to flow through the standby filter 9. Then, it sends an open signal to the third switch valve 6, causing water to flow from the standby filter 9 through the third switch valve 6 and the bend 8 back into the filter 4, performing a reverse flushing of the filter element 42. During the flushing process, the PLC controller periodically sends control signals to the drain valve 3 according to the preset cleaning time, adjusting the opening of the electric butterfly valve to control the drainage flow. After flushing, the PLC controller sends commands to each valve sequentially, restoring the system to normal operation and achieving automatic cleaning control.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An engineering water circuit filter device, characterized in that, The filter includes a filter housing, a baffle plate, and a filter element. The filter housing has a four-way structure, and the baffle plate inside divides its internal cavity into a second cavity and a first cavity. The first cavity is connected to the water inlet and to the filter element and the drain valve. The filter element is connected to the second cavity via a bend. A filter element mounting base is provided at the upper end of the first cavity, and the filter element is installed above the mounting base. The filter element is installed in a top-removable and sealed sleeve, forming a circular cylindrical cavity between the filter element and the sleeve. One side of the circular cylindrical cavity communicates with the bend, and the bend communicates with the second cavity.

2. The engineering water filter device according to claim 1, characterized in that, The filter element is one or any combination of a hollow cylindrical ceramic filter element, a hollow cylindrical composite cotton filter element, and a hollow cylindrical stainless steel mesh filter element.

3. The engineering water filter device according to claim 1, characterized in that, The bend is installed on the upper side of the sleeve, and the cavity between the bend and the bottom of the sleeve is used for water sedimentation.

4. The engineering water filter device according to claim 1, characterized in that, The filter housing is provided with a first differential pressure sensor connector and a second differential pressure sensor connector; the first differential pressure sensor connector is connected to a first cavity; the second differential pressure sensor connector is connected to a second cavity; and differential pressure sensors are installed on the first differential pressure sensor connector and the second differential pressure sensor connector.

5. The engineering water filter device according to claim 1, characterized in that, The bottom of the filter housing is equipped with a connecting flange for a drain valve.

6. A circulating cleaning pipeline, characterized in that, The system includes a drain valve, a filter as described in any one of claims 1-5, a differential pressure sensor, and a set of switching valves on a circulation pipeline; a first switching valve is provided at the inlet end, which is connected to one end of the filter; a drain valve is installed at the bottom of the filter; a bend is provided at the other end of the filter and connected to a third switching valve; the third switching valve is connected to a fourth switching valve via a tee; a second switching valve is connected in parallel to the front end of the first switching valve via a tee; the front end of the second switching valve is connected to a standby filter, which is connected to the third and fourth switching valves via a water pipe via a tee.

7. The circulating cleaning pipeline according to claim 6, characterized in that, The first, second, third, and fourth switching valves are electric ball valves of model D641X-16Q, which include an electric actuator and a ductile iron valve body; the drain valve is an electric butterfly valve of model D941X-16C, which consists of an electric actuator and a carbon steel valve body.

8. The circulating cleaning pipeline according to claim 7, characterized in that, It also includes a PLC controller, a communication module, and a touchscreen HMI (Human Machine Interface); the PLC controller adopts the Siemens S7-1200 series PLC, which has a CPU module, digital input / output module, analog input module, Ethernet interface, and RS485 interface; the communication module adopts the IoT USR-G780 series 4GDTU communication module, which integrates a 4G communication antenna, supports TCP / IP protocol, and connects to the PLC controller through the RS485 interface; the touchscreen HMI is equipped with an LCD screen and a touch operation panel, and communicates with the PLC controller through the Ethernet interface.

9. The circulating cleaning pipeline according to claim 8, characterized in that, The differential pressure sensor continuously monitors the pressure difference between the first and second cavities of the filter and transmits the analog signal to the analog input module of the PLC controller.

Images