Filter material loss detection device, filtration system, and filter material loss detection method

Abstract

The application discloses a filter material loss detection device, a filtering system and a filter material loss detection method, and belongs to the technical field of filtering. The filter material loss detection device comprises a detection pipe, a water inlet end and a water outlet end, the water inlet end and the water outlet end are communicated with a water outlet pipe of the filtering system, the detection pipe is made of transparent material, an intercepting piece is arranged in the detection pipe, the intercepting piece is used for intercepting filter material flowing in the detection pipe, a detection piece is arranged between the water inlet end of the detection pipe and the intercepting piece, and the detection piece is used for detecting whether there is filter material in the detection pipe. The detection pipe of the detection device is communicated with the water outlet pipe of the filtering system, if there is filter material loss after the filtering system is started, an operator can obtain detection information of the detection device when the filtering system is running, filter material loss can be found in time, and the filter material loss can be processed, so that the workload and the inspection time of manual inspection can be effectively reduced, and the filtering system can be conveniently maintained on a daily basis, so that the filtering effect of the filtering system is ensured.

Description

Technical Field

[0001] This application belongs to the field of filtration technology, and in particular relates to a filter media loss detection device, filtration system and filter media loss detection method. Background Technology

[0002] A high-speed multi-media filter is a water treatment device used in filtration systems. It employs multiple layers of filter media with different particle sizes and materials to filter impurities and suspended solids from water, thereby purifying the water. The filtration system operates as follows: wastewater enters the high-speed filter through the inlet pipe and passes through multiple layers of filter media. The filtered impurities and suspended solids are captured in the middle or lower part of the media layers, and the treated clean water flows out from the outlet pipe of the high-speed filter.

[0003] Filter media loss refers to the leakage or loss of filter media from the filter. For existing filtration systems, filter media loss is typically not detected during operation, making it difficult for operators to detect media loss. This hinders timely maintenance of the entire filtration system and consequently affects wastewater filtration efficiency. Summary of the Invention

[0004] This application aims to at least partially solve the technical problem of failing to detect filter media loss in a timely manner during the operation of a filtration system. To this end, this application provides a filter media loss detection device, a filtration system, and a filter media loss detection method.

[0005] In a first aspect, embodiments of this application provide a filter media loss detection device, applied to a filtration system, the device comprising: The detection tube includes an inlet end and an outlet end, both of which are connected to the outlet pipe of the filtration system. The detection tube is made of transparent material. An interceptor is disposed inside the detection tube, and the interceptor is used to intercept the filter material flowing through the detection tube; A detection element, used to detect whether there is filter material inside the detection tube.

[0006] In an optional embodiment of the present invention, the detection element is a differential pressure detector, which detects whether there is filter material in the detection tube based on the pressure difference change in the detection tube.

[0007] In an optional embodiment of the present invention, the device further includes a barrier element disposed inside the outlet pipe. The barrier element has an upstream side and a downstream side arranged opposite to each other along the flow direction of the filter media. On the upstream side, the detection pipe is at least partially connected to the outlet pipe.

[0008] In an optional embodiment of the present invention, the interceptor includes a bracket and a filter unit, the bracket being fixed inside the detection tube and the filter unit being fixed to the bracket; The filtration unit includes a filter surface that contacts the filter media, and the filter surface has an angle θ with the axis of the detection tube, the angle θ ranging from 30° to 45°.

[0009] Secondly, embodiments of this application provide a filtering system, including: A filter, wherein a water outlet pipe is provided on the filter; A detection device is provided on the water outlet pipe, and the detection device is the aforementioned filter media loss detection device.

[0010] In an optional embodiment of the present invention, the detection device is detachably connected to the water outlet pipe, and a shut-off valve is provided on the detection pipe to cut off the connection between the detection pipe and the water outlet pipe.

[0011] Thirdly, embodiments of this application provide a method for detecting filter media loss, applied to the aforementioned filtration system, the method comprising: Obtain the initial pressure value within the detection element; After the filtration system is started, the pressure value of the filter media in the detection element is obtained; The initial pressure value and the filter media pressure value are used to determine whether there is filter media loss during the operation of the filtration system.

[0012] In an optional embodiment of the present invention, the step of determining whether the filtration system experiences filter media loss during operation based on the initial pressure value and the filter media pressure value includes: Determine whether the pressure value of the filter media is greater than the initial pressure value; If the pressure value of the filter media is greater than the initial pressure value, then the filter media is determined to be lost.

[0013] In summary, due to the adoption of the above technical solution, this application includes at least the following beneficial effects: This application provides a filter media loss detection device, which is mainly connected to the outlet pipe of the filtration system to detect whether there is filter media loss during the operation of the filtration system. If filter media loss occurs, the operator can promptly address the issue. Specifically, the detection tube of the detection device is connected to the outlet pipe of the filtration system. After the filtration system is started, wastewater enters the filtration system for filtration. If there is filter media loss, the lost filter media is usually discharged from the outlet pipe along with the filtered clean water. At least some of the lost filter media can enter the detection tube, where it is intercepted by an interceptor and detected by the detector. The operator can obtain the detection information from the detection device while the filtration system is running, promptly detect filter media loss, and address it. This effectively reduces the workload and time required for manual inspection, facilitating daily maintenance of the filtration system and ensuring its filtration effect. Furthermore, the interceptor can intercept a larger amount of filter media, making the detection by the detector more accurate.

[0014] This application provides a filter media loss detection device. The detection tube is made of transparent material, which can achieve the purpose of visualizing the detection device. In the process of obtaining the filter media pressure value in the detection element after the filtration system is started, the detection is carried out by both differential pressure reading and visualization. This can avoid the technical problem of misjudgment when differential pressure detection is used alone when there are deposits in the detection tube. The dual verification is more reliable and makes the detection data more accurate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the filtration system. Figure 2 This is a schematic diagram of the detection device. Figure 3 This is a schematic diagram of the interceptor's structure; Figure 4 A diagram showing the positional relationship between the barrier, the outlet pipe, and the detection device; Figure 5 This is a diagram showing the positional relationship between the barrier and the outlet pipe; Figure 6 This is a schematic diagram showing the diameter of the water outlet pipe; Figure 7 This is a schematic diagram showing the diameter of the outlet pipe, the area of ​​the barrier surface, the angle of the central angle corresponding to the barrier, the required flow area of ​​the outlet pipe, the arc height of the barrier, and the chord length of the barrier. Figure 8 This is a flowchart illustrating the steps of a filter media loss detection method. Figure 9 A step-by-step diagram for obtaining the barrier surface area value of the barrier component; Figure label: 100. Preprocessing unit; 200. Filter; 210. Water outlet pipe; 300. Detection device; 310. Detection tube; 311. Water inlet; 312. Water outlet; 313. First opening; 314. Second opening; 320. Interceptor; 321. Bracket; 3211. Support; 3212. Support rod; 322. Filter unit; 3221. Filter surface; 330. Test component; 331. Main body; 3311. Receiving cavity; 332. Test fluid; 340. Barrier component; 341. Barrier surface; 400. Post-processing unit. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that all directional indications in the embodiments of this invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances. In addition, the descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0019] Filter media loss refers to the leakage or loss of filter media from the filter. Filter media loss during filtration system operation mainly refers to media leaking from the lower water distribution pipe of the filter during filtration. The main causes of this loss are: ① During filtration system operation, the water flow rate is relatively fast, increasing the pressure inside the filter. High pressure can cause the screen plates to tear, resulting in media leakage. ② Insufficiently fixed screen tubes can tear the weld at the connection between the screen tube base and the manifold under the combined force of positive and negative forces; in severe cases, the entire screen tube may break. ③ The screen tubes themselves are of substandard quality. Therefore, after a period of use, the gaps will gradually increase, causing media leakage. ④ Damage to the screen in gravity filter tanks can also cause media leakage.

[0020] In related technologies, filter media loss is usually not detected during the operation of the filtration system. As a result, it is difficult for operators to detect whether there is any filter media loss, which is not conducive to timely maintenance of the entire filtration system. This affects the sewage filtration effect, degrades water quality, and causes blockage of water-using equipment such as spray heads and nozzles, thus reducing product quality.

[0021] This application is described below with reference to the accompanying drawings and specific embodiments: Please see Figure 1 This application provides a filtration system capable of detecting filter media loss during filtration, including: The pretreatment unit 100 includes a sedimentation tank and a dosing device for treating raw water, removing large particulate matter and suspended solids, and adding appropriate amounts of chemicals to kill bacteria, viruses and other microorganisms.

[0022] The filter 200 includes a filter media layer, a support layer, and an effluent system. The filter media layer is composed of various filter media of different sizes (such as quartz sand, ground stone, zircon sand, etc.), capable of filtering out smaller particulate matter and colloidal substances. The support layer supports the filter media layer and prevents it from being compacted. The effluent system includes a bottom water collector and an upper filtrate distribution system, used to collect the treated water and distribute it to the effluent pipe 210. In some embodiments, the filter 200 is preferably a high-speed multi-media filter. The working principle of the high-speed multi-media filter unit is that after pretreatment, the raw water enters the filter media layer. Under the action of various filter media of different sizes, smaller particulate matter and colloidal substances are intercepted inside the filter media layer, while larger particulate matter is intercepted on the surface of the filter media layer. The filtered water is collected from the filtrate distribution system, and finally, clean water is output. The high-speed filter can also adapt to the requirements of various water sources and water quality, and is suitable for water treatment needs in different fields such as domestic sewage, industrial wastewater, and seawater desalination. The advantages of a high-speed multi-media filter unit are its fast filtration speed, good treatment effect, high filtration efficiency, resistance to clogging, and low operating cost. Of course, the filter 200 involved in this application is not limited to the high-speed multi-media filter of this embodiment, but can also be a sand filter, activated carbon filter, fiber filter, ultrafilter, etc.

[0023] The detection device 300 is installed on the water outlet pipe 210 and is used to detect whether there is filter material in the water outlet pipe 210.

[0024] The post-treatment unit 400 includes a disinfection device and a wastewater treatment device, used to kill microorganisms such as bacteria and viruses in the water, and to treat the remaining water.

[0025] If the detection device 300 detects that there is filter media in the outlet pipe 210, it indicates that there is filter media loss in the filter 200. The operator can obtain the detection information of the detection device 300 when the filtration system is running, promptly detect filter media loss, and deal with the filter media loss. This can effectively reduce the workload and inspection time of manual inspection, facilitate the daily maintenance of the filtration system, and ensure the filtration effect of the filtration system.

[0026] In some embodiments, the detection device 300 is detachably connected to the outlet pipe 210, and a shut-off valve is provided on the detection pipe 310 to connect the detection pipe 310 to the outlet pipe 210. During use, the detection device 300 may malfunction. In routine maintenance, such as troubleshooting operations requiring replacement of components of the detection device 300, the detachable connection allows for easy disassembly of the detection device 300, avoiding the hassle of disassembling the entire outlet pipe 210. Specifically, detachable connection methods such as threaded connections, flange connections, clamp connections, and quick-connect couplings can be used. Threaded connections and flange connections provide good sealing and reliable connection performance. Clamp connections and quick-connect couplings are suitable for applications requiring frequent disassembly, facilitating easy disassembly and assembly and improving work efficiency. In this application, clamp connections and quick-connect couplings are preferred.

[0027] In some embodiments, the detection tube 310 is made of a pressure-resistant transparent material to achieve the purpose of visualizing the detection device.

[0028] Furthermore, the shut-off valve facilitates easy maintenance of the internal components of the detection device 300. When maintenance or replacement of the detection device 300 is required, the shut-off valve can be closed to reduce the pressure inside the detection tube 310 to zero, allowing for disassembly and maintenance. This design avoids the problem of being unable to disassemble the device due to the inability to drain the internal components, ensuring the maintainability of the detection device 300. After maintenance is complete, the shut-off valve of the inspection device can be opened for operation. Moreover, by placing the shut-off valve on the detection tube 310, during maintenance or replacement of the detection device 300, the shut-off valve prevents leakage of liquid and filter media from the outlet pipe 210 without affecting the normal operation of the filtration system.

[0029] The following embodiments mainly describe the structure of the detection device 300 in detail: Please see Figure 2 Based on the same inventive concept, this application also provides a filter media loss detection device 300, applied to a filtration system, capable of detecting the filter media loss in the filtration system. The filter media loss detection device 300 includes: The detection tube 310 includes an inlet end 311 and an outlet end 312, both of which are connected to the outlet pipe 210 of the filtration system. An interceptor 320 is disposed inside the detection tube 310 and is used to intercept the filter material flowing through the detection tube 310. Detection element 330 is used to detect whether there is filter material inside the detection tube 310.

[0030] The technical solution provided in this application mainly connects the detection device 300 to the outlet pipe 210 of the filtration system to detect whether there is filter media loss during the operation of the filtration system. If filter media loss occurs, the operator can promptly address the issue. Specifically, the detection pipe 310 of the detection device 300 is connected to the outlet pipe 210 of the filtration system. After the filtration system is started, wastewater enters the filtration system for filtration. If there is filter media loss, the lost filter media is usually discharged from the outlet pipe 210 along with the filtered clean water. At least some of the lost filter media can enter the detection pipe 310, where it is intercepted by the interceptor 320 and detected by the detection element 330. The operator can obtain the detection information from the detection device 300 during the operation of the filtration system, promptly detect filter media loss, and address it. This effectively reduces the workload and time required for manual inspection, facilitating daily maintenance of the filtration system and ensuring its filtration effect. Furthermore, the interceptor 320 can intercept a larger amount of filter media, making the detection by the detection element 330 more accurate.

[0031] The aforementioned detection tube 310 can be located at the lower part of the outlet pipe 210 or at the side of the outlet pipe 210. Its location is not limited. When there is filter media in the outlet pipe 210, it is only necessary to ensure that the filter media can enter the detection tube 310. The detection tube 310 is preferably U-shaped to facilitate the placement of the interceptor 320 and the detection element 330.

[0032] There are several ways to configure the aforementioned interceptor 320. Examples of configurations are given below: First, the interceptor 320 is configured to block the detection tube 310. The interceptor 320 can be a plug or similar component. The plug can completely intercept the filter media flowing into the detection tube 310, making the detection by the detection element 330 more accurate. Second, the filter-type interceptor 320 is configured inside the detection tube 310. The edge of the interceptor 320 fits tightly against the inner wall of the detection tube 310. The interceptor 320 has filter holes that can intercept filter media while allowing water to pass through smoothly. This ensures that the interceptor 320 can effectively intercept filter media while allowing water to flow through, guaranteeing the normal operation of the filtration system. The filter-type interceptor 320 can be a screen-type interceptor 320, a basket-type interceptor 320, a filter screen-type interceptor 320, a vortex-type interceptor 320, etc.

[0033] It should be noted that the setting method adopted by the interceptor 320 in this embodiment includes, but is not limited to, the above types.

[0034] There are several ways to configure the aforementioned detection element 330: First, the detection element 330 is a transparent, enclosed window installed on the wall of the detection tube 310. Operators can directly observe from the outside whether there is filter material inside the detection tube 310. This method is simple in structure, low in cost, and mainly suitable for scenarios requiring regular maintenance. Second, a detection instrument can be used to detect the filter material, such as ultrasonic or laser detectors. This method allows for real-time monitoring of the filter material, improving detection efficiency and accuracy, but it is more expensive. It should be noted that the configuration of the detection element 330 in this embodiment includes, but is not limited to, the above types.

[0035] To facilitate understanding of the structure of the filter media loss detection device 300, the components of the interception element 320 and the detection element 330 are further described below: In some embodiments, the detection element 330 is a differential pressure detector, which detects whether there is filter material inside the detection tube 310 based on the change in differential pressure within the detection tube 310. Detection by differential pressure can quantify the accumulation of filter material, has high detection accuracy, and can also achieve real-time monitoring.

[0036] In some implementations, a differential pressure sensor can be used as the differential pressure detector. Differential pressure sensors are installed on both sides of the detection tube 310. When filter media accumulates inside the detection tube 310, it increases the resistance of the fluid inside the tube, thus generating a pressure difference. The differential pressure sensor can determine whether there is filter media inside the detection tube 310 by detecting the change in the pressure difference across the tube. The advantages of this method are high accuracy and sensitivity, enabling precise detection of filter media accumulation.

[0037] In some embodiments, the interceptor 320 includes a bracket 321 and a filter unit 322. The bracket 321 is fixed inside the detection tube 310, and the filter unit 322 is fixed to the bracket 321. The bracket 321 fixes the interceptor 320, preventing it from shifting in position under the force of the water flow, which would reduce its effectiveness in intercepting filter media or even prevent it from intercepting at all. The filter unit 322 can be a filter screen, filter cartridge, sand filter, etc., and is not limited thereto.

[0038] In some embodiments, the filter unit 322 includes a filter surface 3221 in contact with the filter media. The filter surface 3221 and the axis of the detection tube 310 have an angle θ, preferably ranging from 30° to 45°. It is understood that the filter unit 322 is inclined. Due to the angle θ, the filter surface 3221 is inclined relative to the axis of the detection tube 310, and has two inclination directions: a forward inclination direction, where the filter surface 3221 is inclined relative to the direction of water flow in, i.e., the direction in which the filter surface 3221 tilts forward when the water flows through the filter unit 322; and a backward inclination direction, where the filter surface 3221 is inclined relative to the direction of water flow out, i.e., the direction in which the filter surface 3221 tilts backward when the water flows out of the filter unit 322. The angle θ is the installation angle of the filter unit 322 within the detection tube 310. It is known that the smaller the angle θ, the larger the area of ​​the filter surface 3221 and the smaller the water flow resistance. However, when the water flow force is large, if the included angle θ is too small, the water flow force will affect the stability of the filter unit 322. Therefore, the minimum value of the included angle θ can be set to 30°. The setting of the included angle θ also relates to the installation of the filter unit 322. When using a 30° angle, attention needs to be paid to the orientation during installation. For ease of installation, the maximum value of the included angle θ of the filter unit 322 is set to 45° to prevent the filter unit 322 from being installed backwards. Therefore, the preferred range of the included angle θ is 30° to 45°. This not only ensures good stability but also facilitates installation. Furthermore, the presence of the included angle θ reduces the direct impact force of the water flow on the filter pores of the filter unit 322, reducing wear and tear on the filter unit 322, lowering the risk of clogging, and thus extending the service life of the filter unit 322.

[0039] In some embodiments, see Figure 3The bracket 321 includes a support member 3211 and at least three support rods 3212. The support member 3211 is arranged radially along the detection tube 310. The at least three support rods 3212 are uniformly and vertically fixed to the support member 3211. The free ends of each support rod 3212 are located on the same plane, and at least one free end is not on the same straight line as the other free ends. The filter unit 322 is connected to the support rods 3212 at their free ends. If the free ends are all on a straight line, a multi-point support structure cannot be formed. Using multiple support points to support the filter unit 322 can effectively disperse the water flow force on the filter unit 322, reduce the pressure and load on each support point, and thus reduce wear and damage at the stress points. Using multiple support points can also enhance the overall stability and balance of the filter unit 322, as they can better prevent the filter unit 322 from tilting or sliding, thereby reducing the risk of the filter unit 322 overturning and being damaged. Preferably, this embodiment uses four support rods 3212 as supports, and the four support rods 3212 are evenly distributed, making the structure more stable. In some embodiments, the support member 3211 can be a support plate, which provides better support for the support rods 3212. The support member 3211 can also be a structure formed by the connecting parts of the support rods 3212 connected to each other, which has a simpler structure. It should be noted that the structure of the support member 3211 is not limited here, as long as it can support the support rods 3212.

[0040] In some embodiments, the detection tube has an inner tube wall, and a seal is provided between the filter unit and the inner tube wall. The seal can maximize the interception of filter media. Specifically, the seal can be a rubber sealing ring, a sealing gasket, sealant, or a metal gasket, and is not limited thereto.

[0041] In some embodiments, see Figure 4 and Figure 5The detection device 300 also includes a blocking element 340, which is disposed inside the outlet pipe 210. The blocking element 340 has an upstream side and a downstream side arranged sequentially opposite to each other along the flow direction of the filter media. The upstream side is the side of the blocking element 340 facing the filter media. On the upstream side, the detection pipe 310 is at least partially connected to the outlet pipe 210. The blocking element 340 is mainly used to block the filter media in the outlet pipe 210. The blocked filter media flows into the detection pipe 310, where the detection element 330 detects it to determine if there is any loss of filter media in the filtration system. Specifically, on the upstream side of the blocking element 340, the filter media and water flow out of the outlet pipe 210. When passing through the blocking element 340, the filter media is blocked. Because the upstream detection pipe 310 is at least partially connected to the outlet pipe 210, the filter media will enter the detection pipe 310 and be detected by the detection element 330. When the barrier 340 is a filter structure, it only intercepts the filter media, thus achieving the solution in this embodiment. When the barrier 340 is a closed structure, it not only blocks the filter media but also the water flow. The water flow blocked by the barrier 340 changes direction, causing the blocked filter media to flow into the detection tube 310. Compared to the filter structure, the closed structure of the barrier 340 makes it easier to introduce the filter media to the location of the detection element 330, resulting in higher detection accuracy of the detection element 330.

[0042] It should be noted that the barrier provided in this embodiment is applicable not only to filtration systems using high-speed filters, but also to filtration systems using non-high-speed filters. I will now describe these two cases in detail: Please see Figure 1 When the filtration system uses a non-high-speed filter, according to fluid dynamics, a portion of the low-velocity water will flow from the outlet pipe 210 into the detection pipe 310 at the connection between the detection pipe 310 and the outlet pipe 210, even without the barrier 340. In this case, the barrier 340 is a preferred option, as it can block more filter media from being guided into the detection pipe 310, thus improving the detection accuracy of the detection device 300.

[0043] Please see Figure 1 When the filtration system uses a high-speed filter for filtration, according to fluid dynamics, the high-velocity water will continue to flow forward after passing through the connection between the detection pipe 310 and the outlet pipe 210, and it will not easily enter the detection pipe 310. At this time, the barrier 340 is a necessary part of the detection device 300. Only after being blocked by the barrier 340 can the filter material flow into the detection pipe 310.

[0044] In some embodiments, the location of the barrier 340 is not fixed. It can be located at the lower part of the outlet pipe 210, or at the middle or lower part of the outlet pipe 210, as long as the filter material blocked by the barrier 340 can enter the detection pipe 310. However, as a preferred embodiment, the barrier 340 can be located at the lower part of the outlet pipe 210 and on one side of the inlet end 311 of the detection pipe 310. This makes the barrier 340 closer to the inlet end 311, and the filter material blocked by the barrier 340 can more easily flow into the detection pipe 310.

[0045] In some embodiments, see Figure 4 and Figure 5 The barrier element 340 includes a barrier surface 341 that contacts the filter media. The barrier surface 341 is a circular arc-shaped structure whose center and diameter match those of the detection tube 310. The height of the arc of the barrier element 340 is no more than one-third of the diameter of the outlet pipe 210. When the filtration system uses a high-speed filter and the barrier element 340 has a closed structure, the water flow velocity is relatively high. The larger the area of ​​the barrier surface 341, the greater the impact force of the water flow on the barrier element 340; conversely, the smaller the area of ​​the barrier element 340, the smaller the impact force. A greater impact force results in lower stability of the barrier element 340, making it more susceptible to damage. Furthermore, the area of ​​the barrier surface 341 should not be too large, as an excessively large area will affect the flow of water, thus affecting the amount of water processed by the filtration system and consequently impacting the normal operation of the entire filtration system. Therefore, the area of ​​the barrier surface 341 needs to be determined within a suitable range.

[0046] In some embodiments, see Figure 2 The inlet end 311 includes an inlet port, and the detection tube 310 is connected to the outlet pipe at the inlet port. The diameter of the inlet port is larger than the inner diameter of the detection tube 310. Because the diameter of the inlet port is larger than the inner diameter of the detection tube 310, the filter media can be more easily guided into the detection tube 310, thereby achieving effective detection of the filter media; it can reduce the resistance when the water flows through the inlet port, thereby reducing the pressure drop and energy loss of the water flow and improving the hydraulic efficiency of the system; it can reduce the possibility of clogging of the detection tube 310, thereby avoiding impact on the filtration system; and it can facilitate the cleaning and maintenance of the inlet port, reducing maintenance costs and time.

[0047] Preferably, the water inlet port is inverted conical in shape, which provides good guidance and is easy to process. Of course, the shape of the water inlet port is not limited to inverted conical; it can also be arc-shaped, etc., and is not limited here.

[0048] In some embodiments, the detection tube is transparent. Specifically, the filter media is trapped in the detection tube, allowing operators to directly observe the media loss through the transparent tube without the need for additional detection structures, making operation simple and convenient. By observing the filter media in the detection tube, media loss can be detected promptly, enabling timely repair or replacement measures to prevent filter media failure or further damage to the equipment. Using such a transparent tube for filter media detection reduces maintenance costs. On the one hand, it eliminates the need for additional detection equipment, reducing equipment investment and maintenance expenses; on the other hand, timely detection of filter media problems can prevent greater damage, lowering equipment repair and replacement costs. The solution provided in this embodiment saves time and labor costs and improves production efficiency.

[0049] Based on the same inventive concept, please see Figure 8 This application also provides a method for detecting filter media loss, applied to a filtration system, which can effectively detect the filter media loss in the filtration system. The filter media loss detection method includes: S100: Obtain the initial pressure value within the test piece. S200: After the filtration system is started, obtain the pressure value of the filter media in the detection element. During the testing process, it is also necessary to use a visual testing tube for dual verification. This can avoid the technical problem of misjudgment when using differential pressure detection alone when there are deposits in the testing tube. Dual verification is more reliable and makes the test data more accurate.

[0050] S300. Determine whether there is filter media loss during the operation of the filtration system based on the initial pressure value and the filter media pressure value, including: S310. Determine whether the filter media pressure value is greater than the initial pressure value; S320. If the filter media pressure value is greater than the initial pressure value, then filter media loss is determined.

[0051] In summary, because the detection device is located at the outlet pipe, after the filtration system is started, by comparing the current pressure value detected in the detection element with the initial pressure value, it is easy to determine whether there is any loss of filter media in the filtration system. This allows operators to promptly detect and address any filter media loss, effectively reducing the workload and time required for manual inspection. It also facilitates daily maintenance of the filtration system, ensuring its filtration efficiency.

[0052] In some embodiments, the barrier element includes a barrier surface in contact with the filter media. Prior to step S100, the filter media loss detection method further includes: S10. Obtain the barrier surface area value of the barrier component. Please refer to [link / reference]. Figure 9 ,include; S11. Obtain the water treatment capacity range of the filtration system, which includes the minimum water treatment capacity value. S12. Obtain the flow velocity range of the outlet pipe based on the water treatment capacity range. The flow velocity range of the outlet pipe includes the highest flow velocity value of the outlet pipe. S13. Obtain the required flow surface area of ​​the outlet pipe based on the minimum treated water volume and the maximum flow velocity of the outlet pipe. S14. Obtain the area value of the barrier surface based on the required flow surface area value of the water outlet pipe. When a filtration system uses a high-speed filter with a closed-loop barrier, the water flow velocity is relatively high. A larger barrier surface area results in a greater impact force from the water flow, while a smaller barrier area results in a smaller impact force. Greater impact force leads to lower stability of the barrier and makes it more susceptible to damage. Furthermore, the barrier surface area should not be too large, as this can impede water flow and reduce the amount of water the filtration system can process, thus affecting the overall operation of the system. Therefore, the barrier surface area needs to be determined within a suitable range.

[0053] The purpose of determining the baffle surface area value using the highest flow velocity and lowest treated water volume values ​​in the outlet pipe is to ensure that the flow velocity within the outlet pipe remains within a suitable range within the water treatment capacity of the filtration system. If the baffle surface area value is too large, it will increase the resistance within the outlet pipe, thus reducing the flow velocity; if the baffle surface area value is too small, it may cause the flow velocity within the outlet pipe to exceed the suitable range at the highest treated water volume. Therefore, the baffle surface area value needs to be determined based on the highest flow velocity and lowest treated water volume values ​​in the outlet pipe to ensure that the flow velocity within the outlet pipe is always within a suitable range.

[0054] In some embodiments, to facilitate the manufacture of the barrier element, the barrier surface is configured as a circular arc-shaped structure whose center and diameter both match those of the detection tube 310. After step S10, the filter media loss detection method further includes: S20. Obtain the value of the arc height of the barrier component based on the area value of the barrier surface.

[0055] Specifically, the height of the arc of the barrier should not exceed 1 / 3 of the diameter of the outlet pipe.

[0056] Please see Figure 6 and Figure 7 Below, I will list one method for calculating the value of the arc height. It should be noted that this embodiment includes, but is not limited to, using this method to calculate the value of the arc height of the barrier: The water treatment capacity of the filtration system ranges from 250 to 385 m³ / h, and the outlet pipe diameter is 300 mm. According to the flow rate calculation formula Q=π(D / 2)²*V, the outlet pipe flow velocity range is calculated to be 0.98 m² / s-1.51 m² / s; where Q is the water treatment capacity of the filtration system, D is the outlet pipe diameter, and V is the outlet pipe flow velocity.

[0057] Based on the minimum treatment capacity of 250 m³ / h and the maximum flow velocity of 1.51 m² / s in the outlet pipe, the required flow surface area of ​​the outlet pipe is calculated to be approximately 0.05 m².

[0058] Calculate the barrier surface area: S2=S-S1=3.14*0.15*0.15-0.05=0.02m2, where S2 is the barrier surface area, S is the cross-sectional area of ​​the outlet pipe, and S1 is the required flow surface area of ​​the outlet pipe.

[0059] Calculate the value of β: S2=π*(β / 360)*(D / 2)2-(D / 2)2*sin(β / 2)*cos(β / 2)=(D / 2)2*(π*β / 360-1 / 2*sinβ), where S2 is the area of ​​the barrier surface, β is the angle of the central angle corresponding to the barrier, and D is the diameter of the outlet pipe.

[0060] As can be seen from the above, β≤140°.

[0061] Based on geometric relationships, we can obtain a≤0.28m and h≤0.1m, where h is the height of the arc of the barrier and a is the chord length of the barrier.

[0062] More preferably, taking into account factors such as construction insertion and localized losses, the height of the barrier is set to 1 / 5 of the diameter of the outlet pipe.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0064] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter media loss detection device, characterized in that, The device, used in a filtration system, includes: The detection tube includes an inlet end and an outlet end, both of which are connected to the outlet pipe of the filtration system. The detection tube is made of transparent material. An interceptor is disposed inside the detection tube, and the interceptor is used to intercept the filter material flowing through the detection tube; A detection element, used to detect whether there is filter material inside the detection tube; The device further includes a barrier element disposed inside the outlet pipe. The barrier element has an upstream side and a downstream side arranged opposite to each other along the flow direction of the filter media. On the upstream side, the detection pipe is at least partially connected to the outlet pipe. The barrier includes a barrier surface that contacts the filter media. The barrier surface is a circular arc-shaped structure whose center and diameter are matched with the detection tube. The value of the arc height of the barrier is not higher than one-third of the diameter of the outlet pipe. The detection element is a differential pressure detector, which detects whether there is filter material in the detection tube based on the pressure difference change in the detection tube.

2. The filter media loss detection device according to claim 1, characterized in that, The interceptor includes a bracket and a filter unit, the bracket being fixed inside the detection tube and the filter unit being fixed to the bracket; The filtration unit includes a filter surface that contacts the filter media, and the filter surface has an angle θ with the axis of the detection tube, the angle θ ranging from 30° to 45°.

3. A filtration system, characterized in that, include: A filter, wherein a water outlet pipe is provided on the filter; A detection device is provided on the water outlet pipe, and the detection device is a filter media loss detection device according to any one of claims 1-2.

4. A filtration system according to claim 3, characterized in that, The detection device is detachably connected to the water outlet pipe, and a shut-off valve is provided on the detection pipe to cut off the connection between the detection pipe and the water outlet pipe.

5. A method for detecting filter media loss, characterized in that, The method, applied to the filtration system according to any one of claims 3-4, comprises: Obtain the initial pressure value within the detection element; After the filtration system is started, the pressure value of the filter media in the detection element is obtained; The initial pressure value and the filter media pressure value are used to determine whether there is filter media loss during the operation of the filtration system.

6. The filter media loss detection method according to claim 5, characterized in that, The step of determining whether there is filter media loss during the operation of the filtration system based on the initial pressure value and the filter media pressure value includes: Determine whether the pressure value of the filter media is greater than the initial pressure value; If the pressure value of the filter media is greater than the initial pressure value, then the filter media is determined to be lost.

Images