A self-protecting filter and its control method

Abstract

The present invention relates to a self - protection filter and its control method, which includes a body, a secondary cleaning cover, an eccentric flap, an emergency filter screen, a main filter cartridge, a main cleaning cover, a rotatable module and a control assembly. The side of the body is provided with a main cleaning end and a secondary cleaning end. The main filter cartridge is installed in the main cleaning end, and the main cleaning cover covers the outside of the main cleaning end. The secondary cleaning cover covers the outside of the secondary cleaning end; both the eccentric flap and the emergency filter screen are connected to the secondary cleaning end at one end and the outer shell end of the main filter cartridge at the other end, and are respectively close to the water inlet end and the water outlet end of the body; the eccentric flap is connected in the body through the rotatable module and automatically opens when the operating pressure difference of the body is greater than the pressure resistance difference of the main filter cartridge; the control assembly is installed on the body and is connected to the rotatable module. Compared with the prior art, the present invention can automatically and quickly open the eccentric flap for pressure relief in case of emergency to protect the main filter cartridge, and use the Internet of Things technology to transmit the real - time information of the equipment for remote monitoring and management.

Description

Technical Field

[0001] The present invention relates to the field of filters, and particularly to a self-protecting filter and its control method. Background Art

[0002] Filters are commonly used products in water systems. Especially at the front end of water-using equipment, filters are almost a standard configuration. However, due to factors such as flow area, the filter screen of the filter cannot be designed to be extremely strong. Therefore, once the filter screen is not cleaned regularly, or the amount of garbage suddenly increases and there is no time to clean it, the pressure difference between the two ends of the filter increases, ultimately resulting in the damage of the filter screen and causing failures of water-using equipment. For advanced and expensive imported equipment, it will cause significant economic losses.

[0003] Although there are so-called intelligent filters on the market that can sense the pressure difference before and after the filter to judge the amount of garbage and give remote alarms, because the pressure difference borne by the filter screen itself is relatively small (generally about 1 kg / cm 2 ), the pressure difference captured by two pressure sensors (10-4) has a large error itself, resulting in non-alarm or false-alarm phenomena. In addition, even if there are no problems with the pressure difference and the alarm, there may still be a sudden increase in garbage (such as a plastic bag suddenly sticking to the filter screen, causing a sudden increase in the pressure difference), and there is no time to alarm or rush to the scene for treatment, resulting in the damage of the filter screen. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the existing technology that when the garbage in the filter suddenly increases and there is no time to alarm or rush to the scene for treatment, resulting in the damage of the filter screen, and to provide a self-protecting filter and its control method.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A self-protecting filter includes a main body, which is provided with a water inlet end and a water outlet end. A main cleaning end and an auxiliary cleaning end are also provided on the side of the main body. The self-protecting filter further includes an auxiliary cleaning cover, an eccentric flap, an emergency filter screen, a main filter cylinder, a main cleaning cover, a rotatable module, and a control assembly. The main filter cylinder is installed in the main cleaning end, the main cleaning cover covers the outside of the main cleaning end, and the auxiliary cleaning cover covers the outside of the auxiliary cleaning end;

[0007] One end of the eccentric flap and the emergency filter screen is connected to the auxiliary cleaning end, and the other end is connected to the end of the outer shell of the main filter cylinder, and they are respectively close to the water inlet end and the water outlet end of the main body; the eccentric flap is connected to the inside of the main body through the rotatable module and automatically opens when the operating pressure difference of the main body is greater than the pressure resistance difference of the main filter cylinder; the control assembly is installed on the main body and is connected to the rotatable module.

[0008] Further, the eccentric flap is of a single-eccentric structure or a double-eccentric structure.

[0009] Further, the rotatable module includes a pivot pin, a torsion spring assembly and a shaft. Both ends of the shaft are connected to the inside of the body, and the eccentric flap is connected to the middle of the shaft through the pivot pin.

[0010] The torsion spring assembly is installed at the outer end of the body and is connected to one end of the shaft, and is used to apply torsion to the shaft to overcome the post-torque generated by the area difference of the eccentric flap.

[0011] The control assembly is installed at the other outer end of the body and is connected to the other end of the shaft, and is used to monitor the status information of the shaft.

[0012] Further, when the eccentric flap is in the closed state, there is a gap between the outer circle of the eccentric flap and the body.

[0013] Further, the eccentric flap and the emergency filter are distributed in a V shape, with one end commonly connected to the end of the outer shell of the main filter cartridge, and the other end respectively connected to both sides of the auxiliary cleaning end.

[0014] Further, the control assembly includes a semi-circular magnetic ring, an opening indicator, an Internet of Things module, a pressure sensor, a battery and a housing. The semi-circular magnetic ring and the opening indicator are both installed on the rotatable module and rotate with the rotatable module; the Internet of Things module is provided with a magnetic control switch that cooperates with the semi-circular magnetic ring to collect the rotation status information data of the semi-circular magnetic ring.

[0015] The pressure sensor is installed on the body and is connected to the inside of the body to monitor the pressure of the water supply pipe. The pressure sensor is also connected to the Internet of Things module. The battery is used to supply power to the entire control assembly, and the housing is used to support the entire control assembly and is installed outside the body.

[0016] Further, the Internet of Things module collects the rotation status information data of the semi-circular magnetic ring and wirelessly transmits the data information to a remote monitoring and management platform.

[0017] Further, when the semi-circular magnetic ring triggers the magnetic control switch, the Internet of Things module is in the working state, otherwise it is in the sleep state.

[0018] Further, the Internet of Things module detects the pressure of the water supply pipe inside the body through the pressure sensor. When the pressure of the water supply pipe is less than or greater than the corresponding normal water supply pressure range of the equipment, an alarm message is sent to the remote monitoring and management platform.

[0019] The present invention also provides a control method for a self-protecting filter as described above, including the following steps:

[0020] Before the self - protection filter runs, through calculation and actual measurement, determine the standard pressure - tolerance difference of the main filter cartridge in the self - protection filter, and then set the torque of the torsion - spring assembly in the rotatable module.

[0021] When the self - protection filter is running, if the operating pressure difference in the body is not greater than the standard pressure - tolerance difference of the main filter cartridge, the eccentric flap remains closed, and the fluid is discharged through the main filter cartridge and the main cleaning cover; if the operating pressure difference in the body is greater than the standard pressure - tolerance difference of the main filter cartridge, the eccentric flap is automatically opened, the fluid is automatically shunted through the emergency filter screen, the control assembly is awakened, the state information of the rotation of the eccentric flap and the pressure information of the inner cavity of the body are collected, and are remotely transmitted to the monitoring and management platform.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) In the present invention, an auxiliary cleaning end is provided on the body, and an eccentric flap and an emergency filter screen are correspondingly provided in the body. The eccentric flap is rotatably connected to the body through a shaft, and a torsion - spring assembly is provided to connect the shaft, so that the eccentric flap is closed in the normal operation state, the emergency filter screen does not work, and the main filter cartridge is working. When the garbage in the filter accumulates to a certain extent or suddenly increases, the pressure - difference torque at both ends of the filter increases. At this time, the pressure - difference torque generated by the eccentric flap is greater than the set closing torque, the eccentric flap is automatically opened, and the fluid is shunted through the emergency filter screen, so that the pressure difference will automatically decrease, preventing the filter screen from being damaged due to over - pressure, and realizing automatically and quickly opening the eccentric flap for pressure relief in case of emergency to protect the main filter cartridge;

[0024] And trigger the control assembly to remotely transmit the state information of the rotation of the eccentric flap to the monitoring and management platform, and the user can view it at any time through the terminal device, so as to realize remote monitoring and management.

[0025] (2) The present invention sets the eccentric flap in a single - eccentric form or a double - eccentric form. Based on the relationship of the eccentricity, an area - difference bearing torque will be generated during the pressure - bearing process of the self - protection intelligent filter operation, which can cooperate with the torsion - spring assembly to realize the automatic opening or closing of the eccentric flap and achieve self - protection.

[0026] (3) In order to improve the control accuracy in the present invention, the outer circle of the eccentric flap and the mating hole of the body are in a non - contact state, that is, there is a small gap between the two, to prevent the generation of uncontrollable frictional torque.

[0027] (4) In the present invention, by setting a semi - circular magnetic ring on the shaft and cooperating with the magnetic control switch of the Internet of Things module, when the eccentric flap rotates, the Internet of Things module can be awakened by the semi - circular magnetic ring to realize the timely transmission of data; and timely pressure alarm is carried out through the set pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1Schematic diagram of the normal filtration mode state of a self - protection filter provided in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the state where the eccentric flap of a self - protection filter provided in an embodiment of the present invention is automatically opened;

[0030] Figure 3 Cross - sectional schematic diagram of a self - protection filter provided in an embodiment of the present invention;

[0031] Figure 4 Cross - sectional structure diagram of the control assembly of a self - protection filter provided in an embodiment of the present invention;

[0032] In the figure, 1, body; 2, secondary cleaning cover; 3, eccentric flap; 4, emergency filter screen; 5, main filter cylinder; 6, main cleaning cover; 7, shaft pin; 8, torsion spring assembly; 9, shaft; 10, control assembly; 10 - 1, semi - circular magnetic ring; 10 - 2, opening indicator; 10 - 3, Internet of Things module; 10 - 4, pressure sensor; 10 - 5, battery; 10 - 6, housing. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0035] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0038] Embodiment 1

[0039] As Figure 1 and Figure 2 shown, this embodiment provides a self-protecting filter, which includes a body 1, a secondary cleaning cover 2, an eccentric flap 3, an emergency filter screen 4, a main filter cartridge 5, a main cleaning cover 6, a rotatable module and a control assembly 10. The body 1 is provided with a water inlet end and a water outlet end, and a main cleaning end and a secondary cleaning end are provided on the side. The self-protecting filter further includes the main filter cartridge 5 installed in the main cleaning end, the main cleaning cover 6 covering the outside of the main cleaning end, the secondary cleaning cover 2 covering the outside of the secondary cleaning end, one end of both the eccentric flap 3 and the emergency filter screen 4 is connected to the secondary cleaning end, and the other end is connected to the outer casing end of the main filter cartridge 5, and is respectively close to the water inlet end and the water outlet end of the body 1; the eccentric flap 3 is connected in the body 1 through the rotatable module and automatically opens when the operating pressure difference of the body 1 is greater than the pressure resistance difference value of the main filter cartridge 5; the control assembly 10 is installed on the body 1 and is connected to the rotatable module.

[0040] The eccentric flap 3 is a single-eccentric structure or a double-eccentric structure. Due to the relationship of the eccentric amount, an area difference bearing torque will be generated during the operation under pressure.

[0041] As Figure 3 shown, the rotatable module includes a shaft pin 7, a torsion spring assembly 8 and a shaft 9. Both ends of the shaft 9 are connected in the body 1, and the eccentric flap 3 is connected to the middle of the shaft 9 through the shaft pin 7;

[0042] The torsion spring assembly 8 is installed at one end outside the body 1 and is connected to one end of the shaft 9 for applying a torsion force to the shaft 9 to overcome the area difference bearing torque generated by the eccentric flap 3;

[0043] The control assembly 10 is installed at the other end outside the body 1 and is connected to the other end of the shaft 9 for monitoring the status information of the shaft 9.

[0044] Preferably, when the eccentric flap 3 is in the closed state, there is a gap between the outer circle of the eccentric flap 3 and the body 1, and the gap can be within the range of 1-2 mm to achieve a non-contact state between the two, so as to prevent the generation of uncontrollable frictional torque.

[0045] In this embodiment, the eccentric flap 3 and the emergency filter screen 4 are distributed in a V shape, with one end commonly connected to the outer shell end of the main filter cartridge 5, and the other ends respectively connected to both sides of the auxiliary cleaning end.

[0046] The body 1 is integrally formed by casting and has a four-way structure. The front and rear two channels are connected to the pipeline, and the upper and lower two ports are respectively provided with 2 auxiliary cleaning covers and 6 main cleaning covers.

[0047] Optionally, as Figure 4 shown, the control assembly 10 includes a semi-circular magnetic ring 10-1, an opening indicator 10-2, an Internet of Things module 10-3, a pressure sensor 10-4, a battery 10-5 and a housing 10-6. The semi-circular magnetic ring 10-1 and the opening indicator 10-2 are both installed on the rotatable module and rotate with the rotatable module; the Internet of Things module 10-3 is provided with a magnetic control switch that cooperates with the semi-circular magnetic ring 10-1 for collecting the rotation state information data of the semi-circular magnetic ring 10-1;

[0048] The pressure sensor 10-4 is installed on the body 1 and is connected to the inside of the body 1 to monitor the pressure of the water supply pipeline. The pressure sensor 10-4 is also connected to the Internet of Things module 10-3. The battery 10-5 is used to supply power to the entire control assembly 10, and the housing 10-6 is used to support the entire control assembly 10 and is installed on the outside of the body 1.

[0049] The Internet of Things module 10-3 collects the rotation state information data of the semi-circular magnetic ring 10-1 and wirelessly transmits the data information to a remote monitoring and management platform.

[0050] When the semi-circular magnetic ring 10-1 rotates, it will trigger the magnetic control switch set on the Internet of Things module DTU10-3 to generate a trigger signal.

[0051] The Internet of Things module 10-3, commonly known as DTU, is installed beside the semi-circular magnetic ring 10-1, can collect the rotation state information data of the semi-circular magnetic ring (10-1), and wirelessly transmits the data information to the monitoring and management platform through the NB / 4G method. Users can view it through terminal devices such as smart phones and computers.

[0052] The Internet of Things module DTU10-3 is usually in a sleep state. Once the magnetic ring 10-1 rotates, it will automatically wake up DTU10-3 to enter the working state.

[0053] The pressure sensor 10-4 is connected to the Internet of Things module DTU10-3 to monitor the pressure of the water supply pipeline. When the pressure of the water supply pipeline is less than or greater than the normal water supply pressure of the device, the Internet of Things module DTU10-3 will send an alarm message to the monitoring and management platform. The user can set the pressure alarm threshold through the monitoring and management platform according to the device requirements.

[0054] In this embodiment, the pressure sensor 10-4 detects the fluid pressure in the main body 1 through a small hole, and the semi-circular magnetic ring 10-1 and the opening indicator 10-2 are installed on the shaft 9 and rotate therewith.

[0055] The control method of the above self-protecting filter includes the following steps:

[0056] Before the self-protecting filter runs, through calculation and actual measurement, determine the standard pressure difference resistance of the main filter cartridge 5 in the self-protecting filter, and then set the torque of the torsion spring assembly 8 in the rotatable module;

[0057] When the self-protecting filter is running, if the operating pressure difference in the main body 1 is not greater than the standard pressure difference resistance of the main filter cartridge 5, the eccentric flap 3 remains closed, and the fluid passes through the main filter cartridge 5 and the main cleaning cover 6 and is discharged; if the operating pressure difference in the main body 1 is greater than the standard pressure difference resistance of the main filter cartridge 5, the eccentric flap 3 is automatically opened, the fluid is automatically shunted through the emergency filter screen 4, the control assembly 10 is awakened, the state information of the rotation of the eccentric flap 3 and the pressure information of the inner cavity of the main body 1 are collected, and are remotely transmitted to the monitoring and management platform.

[0058] In this embodiment, the process of the above method is specifically as follows:

[0059] First, determine a standard pressure difference resistance of a main filter cartridge (1 kg / cm 2 ) through calculation and actual measurement, and then use the torsion spring assembly to provide torque, close the flap and apply the torque to ensure that when the operating pressure difference is not greater than the pressure difference resistance of the main filter cartridge (such as 1 kg / cm 2 ), the eccentric flap is always in the closed state. This is the normal filtration mode ( Figure 1 state).

[0060] When suddenly the amount of garbage increases, the resistance increases, and the pressure difference at both ends of the filter increases and exceeds the standard pressure difference resistance of the main filter cartridge, since the upper area of the eccentric flap shaft is smaller than the lower area, the area difference torque on the eccentric flap increases after the pressure difference increases, until it exceeds the set torque of the torsion spring assembly, the eccentric flap is automatically opened (see Figure 2 ), the fluid is automatically shunted through the emergency filter screen, so that the pressure difference will automatically decrease, preventing the main filter screen from bursting due to overpressure.

[0061] The opening of the eccentric flap will drive the semi-circular magnetic ring to trigger the magnetic control switch on the DTU. The DTU automatically transmits the status information of the rotation of the semi-circular magnetic ring to the monitoring and management platform remotely, and users can view it at any time through terminal devices, such as terminal devices like computers and smartphones. After receiving the alarm information, the staff will carry out on-site water cut-off and sewage cleaning work. There is also an alarm signal output interface on the Internet of Things module DTU, which can be connected to the on-site alarm device for on-site alarm. Once the eccentric flap rotates, it will immediately trigger the on-site alarm device.

[0062] The pressure sensor connected to the DTU monitors the pressure inside the body cavity in real time. When the pressure in the water supply pipeline is less than or greater than the normal water supply pressure of the equipment, the Internet of Things module DTU will send an alarm message to the monitoring and management platform. The user can set the pressure alarm threshold according to the equipment requirements through the monitoring and management platform.

[0063] DTU2 communicates with the cloud monitoring platform in the NB-IOT / 4G mode, and its intelligent terminal includes a PC client and a mobile client.

[0064] By scanning the QR code on the self-protecting intelligent filter product, the identity recognition and positioning function can be realized. In this way, through the intelligent monitoring platform, the installation location of the self-protecting intelligent filter can be displayed on the map, which is convenient for management.

[0065] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the existing technology should be within the protection scope determined by the claims.

Claims

1. A self-protecting filter, comprising a body (1), the body (1) being provided with a water inlet end and a water outlet end, characterized in that, The side of the body (1) is also provided with a main cleaning end and an auxiliary cleaning end. The self-protection filter further includes an auxiliary cleaning cover (2), an eccentric flap (3), an emergency filter screen (4), a main filter cartridge (5), a main cleaning cover (6), a rotatable module, and a control assembly (10). The main filter cartridge (5) is installed inside the main cleaning end, and the main cleaning cover (6) covers the outside of the main cleaning end. The auxiliary cleaning cover (2) covers the outside of the auxiliary cleaning end; One end of both the eccentric flap (3) and the emergency filter screen (4) is connected to the auxiliary cleaning end, and the other end is connected to the outer shell end of the main filter cartridge (5), and is respectively close to the water inlet end and the water outlet end of the body (1). The eccentric flap (3) is connected inside the body (1) through the rotatable module and automatically opens when the operating pressure difference of the body (1) is greater than the pressure resistance difference of the main filter cartridge (5). The control assembly (10) is installed on the body (1) and is connected to the rotatable module; The eccentric flap (3) is of a single-eccentric structure; The rotatable module includes a shaft pin (7), a torsion spring assembly (8), and a shaft (9). Both ends of the shaft (9) are connected inside the body (1), and the eccentric flap (3) is connected to the middle of the shaft (9) through the shaft pin (7); The torsion spring assembly (8) is installed at one end outside the body (1) and is connected to one end of the shaft (9) for applying a torsion force to the shaft (9) to overcome the area difference generated by the eccentric flap (3) and the subsequent torque; The control assembly (10) is installed at the other end outside the body (1) and is connected to the other end of the shaft (9) for monitoring the status information of the shaft (9); The control assembly (10) includes a semi-circular magnetic ring (10-1), an opening indicator (10-2), an Internet of Things module (10-3), a pressure sensor (10-4), a battery (10-5), and a housing (10-6). Both the semi-circular magnetic ring (10-1) and the opening indicator (10-2) are installed on the rotatable module and rotate with the rotatable module. The Internet of Things module (10-3) is provided with a magnetic control switch that cooperates with the semi-circular magnetic ring (10-1) for collecting the rotation status information data of the semi-circular magnetic ring (10-1); The pressure sensor (10-4) is installed on the body (1) and is connected to the inside of the body (1) for monitoring the pressure of the water supply pipeline. The pressure sensor (10-4) is also connected to the Internet of Things module (10-3). The battery (10-5) is used to supply power to the entire control assembly (10), and the housing (10-6) is used to support the entire control assembly (10) and is installed outside the body (1); The Internet of Things module (10-3) collects the rotation status information data of the semi-circular magnetic ring (10-1) and wirelessly transmits the data information to a remote monitoring and management platform.

2. The self-protecting filter according to claim 1, wherein When the eccentric flap (3) is in the closed state, there is a gap between the outer circle of the eccentric flap (3) and the body (1).

3. The self-protecting filter according to claim 1, characterized in that, The eccentric flap (3) and the emergency filter screen (4) are distributed in a V shape, with one end commonly connected to the outer shell end of the main filter cartridge (5), and the other end respectively connected to both sides of the auxiliary cleaning end.

4. The self-protecting filter according to claim 1, characterized in that, When the semi-circular magnetic ring (10-1) triggers the magnetic control switch, the Internet of Things module (10-3) is in the working state; otherwise, it is in the sleep state.

5. The self - protecting filter according to claim 1, wherein The Internet of Things module (10-3) detects the pressure of the water supply pipeline in the main body (1) through the pressure sensor (10-4). When the pressure of the water supply pipeline is less than or greater than the corresponding normal water supply pressure range of the device, an alarm message is sent to the remote monitoring and management platform.

6. A control method for a self-protecting filter according to any one of claims 1-5, characterized in that, It includes the following steps: Before the self-protection filter runs, through calculation and actual measurement, determine the standard pressure tolerance value of the main filter cartridge (5) in the self-protection filter, and then set the torque of the torsion spring assembly (8) in the rotatable module; When the self-protection filter is running, if the operating pressure difference in the main body (1) is not greater than the standard pressure tolerance value of the main filter cartridge (5), the eccentric flap (3) remains closed, and the fluid is discharged through the main filter cartridge (5) and the main cleaning cover (6); if the operating pressure difference in the main body (1) is greater than the standard pressure tolerance value of the main filter cartridge (5), the eccentric flap (3) is automatically opened, the fluid is automatically shunted through the emergency filter screen (4), the control assembly (10) is awakened, the state information of the rotation of the eccentric flap (3) and the pressure information of the inner cavity of the main body (1) are collected, and are remotely transmitted to the monitoring and management platform.

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