Water treatment filter shear and high-rise building fire pipe stratified circulation cleaning system

Abstract

The application discloses a water treatment filtering shear device and layered circulating cleaning system for high-rise building fire-fighting pipelines, and solves the problems of large resource consumption, low cleaning frequency and serious pollution accumulation in the existing pipeline cleaning technology. The system adopts a technical route of "local circulation and cascade utilization". The system comprises a main vertical pipe penetrating through each layer, a layered valve control unit arranged at each layer, a horizontal water supply branch pipe and a vertical bypass pipe system comprising a filtering shear device. The filtering shear device is a core processing device, comprising a mechanical shear component and a filtering and self-cleaning component. The mechanical shear component drives a rotary blade to break the biological membrane through water storage impact force, and the filtering component realizes filtering separation and foreign matter collection through a cylindrical screen. A layer-by-layer cleaning mode from bottom to top is adopted. Water storage in the upper layer is introduced to the lower layer through valve control combination, and mechanical shearing and filtering treatment are carried out through the bypass system, so that the water storage is cascade purified and recycled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire water supply system maintenance, and in particular to a self-cleaning filtering shear for water treatment and a layered circulating cleaning system for biological membrane cleaning of fire water supply pipelines of high-rise buildings. BACKGROUND

[0002] Fire water supply pipelines are in a long-term stationary water storage state, and pollutants such as biological membranes, rust, and scale are easily generated on the inner wall of the pipeline, resulting in a decrease in the pipe diameter, insufficient water quantity, and poor water supply, which affects the safety of fire water supply.

[0003] Existing water treatment equipment has the problems of single function, easy clogging of the filtering device, frequent shutdown for cleaning, lack of pollutant collection mechanism, and the need for external power for continuous driving, and lacks a solution integrating crushing, filtering, self-cleaning, and foreign matter collection.

[0004] Existing pipeline cleaning technologies, whether physical cleaning (one-way flushing, high-pressure jet, mechanical pipe scraping, or air pressure pulse) or chemical cleaning, all have the problem of high resource consumption. For example, the ice slurry cleaning technology disclosed in Chinese Patent CN113976553B requires special preparation and transportation equipment, which is costly. High resource consumption leads to low cleaning frequency, and often the pipeline is cleaned only when the pollution is serious, forming a "difficult to break" dilemma.

[0005] For fire pipeline systems of high-rise buildings, the vertical distribution, similar structure of each floor, and long-term water storage characteristics make the economic burden of traditional cleaning technologies heavy, and it is impossible to utilize the characteristics of the building structure to achieve step-by-step utilization of stored water.

[0006] Therefore, an integrated water treatment filtering shear needs to be developed to achieve integrated purification function, and a layered circulating cleaning system suitable for high-rise buildings with low resource consumption and high cleaning frequency needs to be constructed to achieve a "small amount and multiple times" preventive maintenance mode. SUMMARY

[0007] To solve the above technical problems, the present application provides two technical solutions:

[0008] In a first aspect, the present application provides a self-cleaning filtering shear for water treatment, which separates water flow treatment and solid waste collection functions by adopting a Y-shaped outer shell structure. The outer shell has a front section, a rear section, and a middle section forming a branch. The end of the front section and the rear section is provided with a flange interface for pipeline connection, and the free end of the middle section is provided with a detachable sealing structure for easy maintenance.

[0009] A mechanical shearing assembly is installed in the front section of the outer shell, which uses the impact force of water flow to drive the rotary blade to rotate relative to the fixed blade, thereby achieving mechanical crushing of the biofilm in the water. The mechanical shearing assembly includes a rotary flow guide structure, a rotary blade fixed thereto, a fixed blade, and a fixed flow guide structure arranged from top to bottom. The outer periphery of the fixed blade is consistent with the inner diameter of the outer shell to form a support, and a precise shearing gap of 0.5-2mm is formed between the rotary blade and the fixed blade. The fixed flow guide structure directs the sheared water flow to the subsequent processing assembly.

[0010] The filtration and self-cleaning assembly is installed in the middle section of the outer shell, and the core is a rotatable cylindrical screen. The screen separates the front section and the rear section of the outer shell, so that the sheared water flow must pass through the screen to flow out. The impeller fixed coaxially with the screen rotates under the impact of water flow, driving the screen to rotate synchronously to achieve self-cleaning function, effectively preventing the screen from being blocked. The dirt intercepted by the screen is thrown out under the action of centrifugal force and falls into the foreign matter collector arranged inside the screen under the action of gravity. The foreign matter collector has an arc structure and is connected to the outside through a pipe, and the collected pollutants can be discharged regularly.

[0011] In the second aspect, the application provides a layered circulating cleaning system for fire water supply pipelines of high-rise buildings, which fully utilizes the structural characteristics of high-rise buildings and adopts the technical route of "local circulation and step-by-step utilization".

[0012] The system includes a main vertical pipe that penetrates through each layer of the building and a layered valve control unit arranged at each layer. The layered valve control unit includes a water inlet control valve, a partition valve, and a bypass control valve. By opening and closing the combination of the three valves, the directional flow of water storage at each layer and the establishment of the cleaning path are realized. The water supply branch pipe is horizontally arranged in each layer, one end of which is connected to the main vertical pipe, and the other end extends and branches to each water use point of the layer.

[0013] The bypass pipeline system is the key to realizing water storage purification, which is vertically arranged on one side of the main vertical pipe at each layer and includes a bypass inlet pipe section, a bypass outlet pipe section, and a filter shearing device arranged therebetween. The filter shearing device integrates a mechanical shearing assembly and a filtration and self-cleaning assembly, which can simultaneously complete biofilm crushing, impurity filtration, and foreign matter collection during water flow circulation.

[0014] The system adopts a layer-by-layer cleaning mode from bottom to top, and the central control system coordinates the operation of the equipment at each layer. During cleaning, the long-term stored water in the upper pipeline is introduced to the lower layer by gravity, and the stored water is purified when flowing through the bypass pipeline system. The cleaned water after treatment is stored in the lower pipeline, realizing step-by-step purification and recycling of stored water resources.

[0015] To ensure the cleaning effect, the system can be configured with a magnetic coupling driving device, which automatically starts to provide supplemental power when the water flow impact force is insufficient. The impeller and screen mesh in the filter and self-cleaning assembly are coaxially fixedly connected, driven to rotate by water flow impact, realizing self-cleaning of the screen mesh and automatic collection of pollutants.

[0016] To solve the problem of water storage stagnation in the horizontal pipe section, the system is provided with an air inlet valve at the end of the water supply branch pipe, which cooperates with the negative pressure generating device to ensure that the stored water is completely discharged through negative pressure suction. For buildings with inconsistent pipe capacities at each level, the system can also be configured with a buffer water storage device, including a buffer water tank for temporarily storing excess released water from the upper level.

[0017] The present application has the following beneficial effects:

[0018] Low resource consumption, supports high-frequency cleaning: The system makes full use of the existing stored water in the pipeline, without the need for external cleaning medium, and only a small amount of electric energy is needed to drive the control system and processing equipment, which reduces resource consumption by more than 80% compared with the prior art. Low resource consumption makes it possible to increase the cleaning frequency from once every half year or once a year to once a month or even once a week, realizing the transition from "therapeutic cleaning" to "preventive cleaning".

[0019] High-frequency cleaning achieves better overall effect: Through high-frequency mild cleaning, the accumulation of biofilm and pollutants is prevented, and the degree of pollution is lighter, the cleaning difficulty is smaller, and the effect is better each time. Compared with the low-frequency heavy cleaning mode of the prior art, the high-frequency mild cleaning mode of the present application can obtain better pipe cleanliness and water quality guarantee in the same time period.

[0020] Cascade purification recycling: specially applicable to high-rise buildings with consistent structure at each level, the released water volume of the upper level exactly meets the accommodation capacity of the lower level pipe, without the need for arranging other temporary water storage containers, realizing cascade utilization and purification treatment of stored water, and the resource utilization efficiency is increased by more than 90% compared with the traditional method.

[0021] Integrated treatment technology: integrating mechanical shearing, filtration separation and foreign matter collection into one, the biofilm crushing, impurity filtration and foreign matter collection are completed simultaneously in the water flow circulation process, forming a complete stored water purification closed-loop treatment system.

[0022] High degree of automation, low maintenance cost: through the combination of layered circulation cleaning and mechanical shearing, the control system realizes automatic operation and predictive maintenance function. Due to the high cleaning frequency and small difficulty of single cleaning, the equipment wear is slight, and the maintenance cost is much lower than that of the prior art.

[0023] Significant economic improvement: Although the cleaning frequency is increased, the overall operating cost is reduced by more than 60% compared with the prior art due to the extremely low resource consumption per cleaning. At the same time, the cost of equipment damage and replacement caused by pollution accumulation is avoided through preventive cleaning.

[0024] Strong adaptability: Through the buffer water storage device and intelligent control, it can adapt to different building structures and pipe capacity differences, and realize precise cleaning control.

[0025] Energy saving and environmental protection: The mechanical shearing equipment is driven by the impact force of the stored water flow, and the fluid kinetic energy is converted into mechanical energy, reducing the external power demand. High-frequency cleaning avoids the use of chemical cleaning agents, realizing green and environmentally friendly cleaning.

[0026] Through the technical scheme of the present application, the technical route is changed from "low-frequency heavy cleaning" to "high-frequency light cleaning", and better cleaning effect is obtained with lower resource consumption, providing an economic, efficient and environmentally friendly solution for long-term maintenance of high-rise building fire water supply pipelines. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall schematic diagram of the water treatment filter shearing device and the layered circulating cleaning system of the high-rise building fire pipeline;

[0028] Figure 2 It is a top view of the bypass filter shearing device;

[0029] Figure 3 It is Figure 2 the full cross-sectional view of A-A;

[0030] Figure 4 It is the middle section cut of the shell of the bypass filter shearing device, and the cylindrical stainless steel screen is removed to show the structure of the foreign matter collector;

[0031] Figure 5 It is Figure 2 the full cross-sectional view of A-A, the mechanical shearing assembly and the cylindrical stainless steel screen are removed, and the schematic diagram of the water flow direction is shown;

[0032] Figure 6 It is the cleaning process of Example 2: buildings with inconsistent pipe capacity;

[0033] Figure 7 It is the field photograph of the combination of the water treatment filter shearing device and the high-rise building fire pipeline of the present application;

[0034] Figure 8 It is the field photograph of the stainless steel screen and the foreign matter collector.

[0035] Wherein: the main vertical pipe 100, the layer valve control unit 200, the water inlet control valve 201, the partition valve 202, the bypass control valve 203, the water supply branch pipe 300, the electromagnetic control air inlet valve 301, the bypass pipeline system 400, the bypass inlet pipe section 401, the pressure stabilizer 401a, the filter shear 402, the outer shell 402a, the mechanical shear assembly 402b, the rotating flow guide structure 2b1, the rotating blade 2b2, the fixed blade 2b3, the fixed flow guide structure 2b4, the filter and self-cleaning assembly 402c, the cylindrical stainless steel screen 2c1, the connecting seat 2c2, the impeller 2c3, the through pipe 2c4, the foreign matter collector 2c5, the cover 2c6, the bypass outlet pipe section 403, the buffer water storage device 500, the central control system 600, the conduction length L. DETAILED DESCRIPTION

[0036] The high-rise building fire water supply pipeline layer-by-layer circulating cleaning system of the application is specially used in high-rise buildings with consistent structure in each layer, such as apartments, office buildings, etc., so that the pipeline capacity of each layer is basically consistent, and the storage capacity of the upper layer is just enough to meet the accommodation capacity of the lower layer pipeline when circulating treatment is performed, without arranging other temporary water storage containers, so that the step-by-step utilization and purification treatment of the stored water are realized. Through the combination of layer-by-layer circulating cleaning and mechanical shearing, the automatic operation and predictive maintenance functions are realized by cooperating with the control system, so that the long-term purification and cleaning of the stored water in the high-rise building fire water supply pipeline are realized. The system mainly includes a layer valve control unit, a bypass filter shear, an optional water quality monitoring unit and an intelligent control system, and adopts a layer-by-layer cleaning mode from bottom to top.

[0037] The application will be further described in detail below in combination with the drawings and specific embodiments. EMBODIMENT

[0038] The overall structure of the system is partly referred to Figure 1 , which includes the following components:

[0039] The main vertical pipe 100: vertically penetrates through each layer of the building, for example, a DN150 galvanized steel pipe, which bears the water flow transmission function between layers and is located in the pipe shaft of the building. As the main channel of the entire fire water supply system, it also bears the role of water flow exchange channel between upper and lower layers during cleaning operation.

[0040] The layer valve control unit 200: located at the connection node of the main vertical pipe 100 and the water supply branch pipe of each layer, one set is arranged for each layer, and is arranged in vertical direction according to floor height interval. Through the combination of valve opening and closing, the directional flow of water storage in each layer and the establishment of cleaning path are realized, which is the control core of the entire layer-by-layer circulating cleaning technology.

[0041] Water supply branch pipe 300: horizontally arranged in each layer, one end connected to the main vertical pipe 100, the other end extended and branched to the fire-fighting water points of the layer, the length determined according to the building layout. The branch pipe end is provided with an electromagnetic control air inlet valve. The branch pipe system not only bears the normal fire-fighting water supply function, but also the long-term storage water in the branch pipe system becomes the object to be treated during the cleaning operation, which flows downward to the lower layer by gravity for purification treatment.

[0042] Bypass pipe system 400: vertically arranged on one side of the main vertical pipe 100 of each layer, the upper and lower ends are respectively communicated with the main vertical pipe 100, which has the functions of shearing biological membrane and suspended matter in water, filtering and separating the sheared matter and automatically cleaning and collecting. Each layer is provided with a set, including a bypass inlet, a bypass outlet and an intermediate treatment section, forming an independent water flow treatment channel. The system is the core equipment for realizing water storage purification, which comprehensively purifies the storage water flowing through the bypass diversion without affecting the structure of the main pipe.

[0043] Central control system 600: arranged in the building equipment room, connected with each layer equipment through control cable, realizing centralized control and monitoring of the system. Responsible for the programmed control of the whole cleaning operation, including valve opening and closing time sequence, equipment start and stop control, operation state monitoring and abnormal treatment, ensuring the automation and safety of the cleaning operation.

[0044] Among them, the composition of the layered valve control unit 200 includes the following components:

[0045] Water inlet control valve 201: arranged in the main vertical pipe 100 below the inlet of the bypass pipe system 400, controlling the inflow of the upper layer storage water to the layer. Through opening and closing control, it can not only allow the purified storage water of the upper layer to flow into the layer for storage, but also can block the water flow of the upper layer during cleaning of the layer, ensuring the independence of the cleaning path.

[0046] Isolation valve 202: arranged at the middle position of the water supply branch pipe 300, used to isolate the internal water flow of the layer. Opened during cleaning operation to make the layer storage water flow to the main vertical pipe by gravity; closed during normal water supply to maintain the independent water supply pressure of the layer.

[0047] Bypass control valve 203: arranged at the bypass inlet, controlling the water flow into the bypass system. As the start and stop control of the bypass treatment system, it determines whether the storage water enters the purification treatment process, which is the key control point for realizing layered independent treatment.

[0048] Bypass pipe system 400 includes the following components:

[0049] Bypass inlet pipe section 401: one end connected to the main vertical pipe 100, the other end connected to the filter shear device 402. It bears the function of guiding the storage water, stably guides the storage water in the main vertical pipe into the treatment equipment, and the pipe section design needs to ensure the uniform distribution and flow rate control of the water flow.

[0050] Filtering shear 402: arranged between bypass inlet pipe section 401 and bypass outlet pipe section 403, connected by flange, is the core processing equipment of bypass system. Overload protection clutch and automatic blocking alarm device can be selected. Three functions of mechanical shearing, filtering separation and foreign matter collection are integrated, which realizes the crushing, filtering and removal of biofilm and suspended matter, and is the key equipment for water storage purification.

[0051] Bypass outlet pipe section 403: one end is connected to filtering shear 402, and the other end is reconnected to main vertical pipe 100. Cleanliness detection device can be selected at the outlet to verify the cleaning effect. The clean water flow after purification is reconnected to the main vertical pipe system to complete the processing cycle. The outlet design needs to avoid disturbance to the water flow in the main pipe.

[0052] The structure of filtering shear 402 is referred to Figures 2-3 , including:

[0053] Outer shell 402a: has a front section, a rear section and a middle section forming a branch. When the middle section is placed vertically upward relative to the front section, the free end is inclined downward, and the upper part is about half of the total length, which is connected with the front section and the rear section. The whole is similar to Y shape. The end of the front section and the rear section is provided with a flange interface, which is connected with the bypass pipe section as mentioned above. The free end of the middle section is provided with a detachable sealing structure. The Y-shaped structure design separates the water flow treatment and solid waste collection. The front section is responsible for shearing and crushing, the rear section is responsible for clean water flow output, and the middle section branch is specially used for the separation and collection of solid waste, realizing the functional partitioning in the integrated equipment.

[0054] Mechanical shearing assembly 402b: installed inside the front section of outer shell 402a, including four components arranged from top to bottom with the same central axis of the front section: rotating flow guide structure 2b1, rotating blade 2b2 fixedly connected with rotating flow guide structure 2b1 or integrally made with rotating flow guide structure 2b1, fixed blade 2b3, and fixed flow guide structure 2b4. The relative rotating part is connected through hole shaft cooperation. The size of the outer circumference of fixed blade 2b3 is consistent with the inner diameter size of outer shell 402a, and rotating blade 2b2 and rotating flow guide structure 2b1 leave a moving gap with the inner diameter of outer shell 402a. After installation, the outer ring of fixed blade 2b3 is in contact with the inner wall of outer shell 402a as support, and rotating blade 2b2 and rotating flow guide structure 2b1 can rotate synchronously. The rotating blade and the fixed blade form a shearing gap of 0.5-2mm. Magnetic coupling driving device can be selected. When the water flow impact force is insufficient, the magnetic coupling driving device automatically starts to provide supplementary power to ensure the shearing effect.

[0055] The working principle of the mechanical shearing assembly 402b is as follows: the mechanical shearing assembly 402b forms a rotating power under the guidance of the rotating flow guide structure 2b1 by the impact force of the water flow, thereby driving the rotating blade 2b2 to rotate at a high speed relative to the fixed blade 2b3, and mechanically crushing the biofilm in the water in a controlled shearing gap, thereby completing the shearing and crushing treatment of the biofilm and suspended solids in the water. The mechanical shearing process breaks the biofilm which is originally strongly adhered and difficult to separate into small particles which are easy to filter, thereby creating conditions for subsequent filtration and separation.

[0056] The filter and self-cleaning assembly 402c: each assembly is coaxially installed in the middle section of the outer shell 402a, including a cylindrical stainless steel screen 2c1 as the main body, a connecting seat 2c2 fixed at the end of the middle section of the outer shell 402a for supporting the stainless steel screen, an impeller 2c3 with a central installation positioning hole fixed near the end of the stainless steel screen 2c1 close to the center of the outer shell 402a, a through pipe 2c4 with one end passing through the central installation positioning hole of the impeller 2c3 and extending into the stainless steel screen 2c1 and the other end passing out of the outer shell 402a to the outside, and a foreign matter collector 2c5 fixed at the lower section of the through pipe 2c4.

[0057] The stainless steel screen 2c1 is rotatably installed in the connecting seat 2c2, and the stainless steel screen 2c1 is coaxially fixedly connected with the impeller 2c3. After being installed together in the outer shell 402a, the front section and the rear section of the outer shell 402a are separated by the stainless steel screen 2c1 and the impeller 2c3, that is, the sheared and treated stored water entering from the front section needs to pass through the stainless steel screen 2c1 first, and then flow out of the stainless steel screen 2c1 to the rear section of the outer shell 402a. The design purpose of this installation mode is that the sheared and treated water flow impacts the blades of the impeller 2c3 after passing through the fixed flow guide structure 2b4, so that the impeller 2c3 rotates and drives the stainless steel screen 2c1 to rotate synchronously. In this way, the stainless steel screen 2c1 is not easy to be blocked by self-rotation, and the centrifugal force generated during rotation helps the separation and collection of intercepted substances.

[0058] In addition, the shape and position of the foreign matter collector 2c5 in the stainless steel screen 2c1 are as follows: regarding the shape, the overall cross section of the foreign matter collector 2c5 is arc-shaped, one end of which has an end cover 2c6, and the end cover 2c6 has a filter hole. The length of the foreign matter collector 2c5 is equal to or slightly greater than the actual through length L of the stainless steel screen 2c1 and the rear section of the outer shell 402a (see Figure 3 ); regarding the installation position, see Figure 4The arc-shaped inner wall is fixed against the outer wall of the pipe 2c4 and the cover 2c6 is facing down, forming a shape with a holding function. After installation, the upper end is flat and the lower end extends for a length not less than the conduction length L. The purpose of this installation method is that the dirt that has been sheared and broken is suspended in the water and will inevitably come to the outlet of the screen filter with the water flow. Most of the time (most of the time means that the water level does not completely fill the middle section of the outer shell 402a, and the possibility of completely filling it is very small because the system adopts a continuous flow treatment method), the dirt that is intercepted will be centrifugally thrown out of the water by the rotation of the stainless steel screen 2c1 and come to the top of the foreign matter collector 2c5 with the rotation of the screen. At this time, the dirt will fall into the foreign matter collector 2c5 under the action of gravity and be collected and stored.

[0059] Furthermore, the inner end of the through-pipe 2c4 is close to the cover 2c6, and the outer end is reliably fixed. The main function of the through-pipe 2c4 is to suck away the dirt collected in the foreign matter collector 2c5 by negative pressure suction or gravity discharge, and to discharge the separated solid waste out of the system, ensuring the continuous working capacity of the collector and the long-term effectiveness of the entire filtration system.

[0060] System working principle and overall workflow:

[0061] Based on the core concept of "layered circulating cleaning," this system uses a combination of valve controls to gravity-drain long-term stored water in the upper pipeline to the lower layer for purification, achieving tiered purification and recycling of water resources. Simultaneously, it employs integrated mechanical shearing and filtration technology to simultaneously break down biofilm, filter impurities, and collect foreign matter during water circulation, forming a complete closed-loop water purification system.

[0062] See Figures 1-5 The overall workflow includes:

[0063] Phase 1: System startup and cleaning path establishment.

[0064] Cleaning target layer determination: The system follows a bottom-up order, but it is necessary to determine that the water in the water supply branch pipe of the bottom layer 1F (if 1F is the bottom layer, take 1F as an example) needs to be emptied in advance to make room for the water volume of the next layer after purification. First, the 2F layer is selected as the first cleaning target layer.

[0065] Valve status adjustment:

[0066] Close the inlet control valve 201 and bypass control valve 203 of the target layer 2F to make the 2F layer an independent water storage and release unit;

[0067] Close the water inlet control valve 201 of the 1F floor, open the bypass control valve 203 and the isolation valve 202 of the 1F floor, and make the 1F floor a receiving and processing unit.

[0068] Opening the partition valve 202 of the target floor 2F, so that the water in each branch of the target floor 2F water supply branch pipe 300 can flow downward by gravity;

[0069] Water flow path formation: each branch of the target floor 2F water supply branch pipe 300 stores water→ merges into the 2F main riser 100 through the 2F partition valve 202→ flows into the 1F bypass inlet pipe section 401→ enters the 1F filter shear 402 for purification treatment→ after treatment, it is re-merged into the 1F main riser 100 through the 1F bypass outlet pipe section 403→ finally stored in each branch of the 1F water supply branch pipe 300, completing the purification and transfer of stored water.

[0070] Second stage: mechanical shear treatment.

[0071] Internal working mechanism of filter shear 402:

[0072] Water flow guidance and shear start: the stored water flowing down from the upper floor 2F enters the front section of the filter shear 402; the stored water flow impacts the rotating flow guide structure 2b1, which forms a rotating water flow under its guidance; the rotating water flow drives the rotating blade 2b2 to rotate at high speed relative to the fixed blade 2b3; in the shear gap of 0.5-2mm, the biofilm and suspended solids in the stored water are mechanically sheared and broken into small particles;

[0073] Shearing effect guarantee: when the water flow or impact force is insufficient, the magnetic coupling driving device is automatically started to provide additional power for the rotating blade; ensuring that effective shear effect can be maintained under various water conditions and flow conditions.

[0074] Third stage: filtration separation and foreign matter collection.

[0075] Filtering treatment: the stored water flow after shear treatment enters the middle section of the outer shell 402a; the stored water flow must pass through the cylindrical stainless steel screen 2c1 to flow to the back section for purification; the screen effectively filters the biofilm fragments and other impurity particles after shearing;

[0076] Self-cleaning mechanism: the purified water flow impacts the blades of the impeller 2c3 through the fixed flow guide structure 2b4;

[0077] The impeller 2c3 rotates and drives the stainless steel screen 2c1 to rotate synchronously; the rotating screen has a self-cleaning function, effectively preventing long-term clogging and maintaining filtration efficiency;

[0078] Foreign matter collection: the dirty matter intercepted by the screen is thrown out of the water flow by centrifugal force as the screen rotates; under the action of gravity, the dirty matter falls into the foreign matter collector 2c5 and is collected; the pipe 2c4 is responsible for regularly sucking out the dirty matter in the collector and discharging it out of the system for centralized treatment.

[0079] Stage 4: Negative pressure assistance and complete emptying (optional configuration).

[0080] Flow monitoring: The system monitors the actual water discharge in real time. When it detects that the water discharge is lower than expected, it indicates that there is water accumulation or excessive flow resistance.

[0081] Negative pressure start: Configure the negative pressure generating device to automatically start; at the same time, open the electromagnetic control air inlet valve at the end of the branch pipe to provide the necessary air flow channel; through the negative pressure suction effect, solve the problem of water storage and flow difficulty in horizontal pipe section, and ensure that the water storage is completely emptied.

[0082] Stage 5: Level progression and cycle completion.

[0083] Single-layer cleaning completion: When the target layer 2F's water storage purification treatment is completed and the clean water quality meets the standard, the layer cleaning is completed.

[0084] System progression: The system automatically adjusts the valve state and progresses to the next layer (3F layer), repeating the above cleaning process. At this time, the pipe in the 2F layer is empty, and the water storage in the 3F layer can flow down to the 2F layer.

[0085] Layer-by-layer processing: Each layer is successively treated as a water storage purification treatment object and also as a storage carrier for purified water. According to the order from bottom to top, the entire building's fire pipe water storage purification and cleaning are completed.

[0086] Key technology coordination mechanism.

[0087] Hydraulic balance principle: Take advantage of the fact that the capacity of each layer of pipe is basically the same, the water storage released by the upper layer exactly meets the accommodation needs of the lower layer pipe (high-rise building apartment buildings have this structural feature); without additional water storage containers, the gradient purification and complete recycling of water storage resources are achieved.

[0088] Mechanical-fluid coupling: The flow impact force of the water storage drives the mechanical shearing equipment, and the fluid kinetic energy is converted into mechanical energy; shearing and crushing improve the water storage purification cleanliness, forming a positive feedback loop, and achieving efficient water storage purification treatment.

[0089] Multi-stage processing integration: Shearing and crushing → filtration and separation → foreign matter collection → (optional) negative pressure emptying, three to four processing steps are completed continuously in one device, each step has independent working mechanism, and the overall water storage purification treatment effect is achieved through coordination. Embodiment

[0090] This embodiment is suitable for building structures with inconsistent pipe capacities, such as commercial complexes, medical buildings, etc. The functions of each layer of these buildings are different, and the layout and capacity of the fire pipes are different. The system adds a buffer water storage device and cooperates with the water quality monitoring function to achieve precise cleaning control of complex pipe systems.

[0091] System overall structure: reference Figure 5 The main improvement of the system based on example one:

[0092] Main vertical pipe 100, the same as example one, increase flow monitoring node, set flow sensor every 2-3 layers, real-time monitoring of water flow dynamics of each section of pipe.

[0093] Layered valve control unit 200, increase precision flow regulation function on the basis of the original:

[0094] Intelligent water inlet control valve: equipped with flow regulator, can realize opening degree control, according to the dynamic adjustment of water inflow according to the lower layer capacity.

[0095] Multi-stage isolation valve: can control the release speed of water storage in this layer, avoid the risk of overflow when the lower layer capacity is insufficient.

[0096] Intelligent bypass control valve: integrated flow metering function, real-time monitoring of water entering the bypass system.

[0097] Buffer water storage device 500 (new core component), used to solve the problem of mismatching of pipe capacity in each layer:

[0098] Buffer tank, volume according to the maximum capacity difference between floors, made of stainless steel 304, set in the equipment layer or pipe well. Function for temporary storage of excess release water in the upper layer, to avoid overflow of the lower layer pipe.

[0099] System working principle and process:

[0100] Intelligent layered cleaning mode, first stage: system pre-analysis and path planning.

[0101] The system automatically scans the pipe capacity of each layer when starting, identifies the combination of floors with large capacity difference, calculates the required buffer water storage capacity. According to the pollution degree of each layer, develop individualized cleaning parameters, determine the use scheme of buffer water storage device.

[0102] Take target layer 3F as an example (assuming 3F pipe capacity 800L, 2F capacity 600L), the system calculates the excess water storage capacity 200L, automatically starts the buffer water storage device 500 to receive excess water.

[0103] Second stage: differential capacity balance.

[0104] Open 3F layer isolation valve to release water storage, the first 600L directly flows into 2F layer pipe system, and the last 200L is automatically introduced into the buffer water storage device. Intelligent water inlet control valve monitors the pressure of 2F layer pipe, when the pressure reaches the set value, automatically switch to buffer mode.

[0105] Third stage: buffer water storage step release.

[0106] The purified water storage step release in the buffer water storage device, the water outlet regulating valve controls the release flow, and ensures that the receiving layer pipeline will not be overloaded. The preset flow is released to the target layer.

[0107] The present application is not limited to the above-mentioned embodiments, and various changes and improvements can be made by those skilled in the art without departing from the spirit and scope of the present application, and these changes and improvements shall all belong to the protection scope of the present application.

Claims

1. A self-cleaning filter shear for water treatment, characterized in that, include: The outer shell (402a) has a front section, a rear section and a middle section forming a branch, and the whole has a Y-shaped structure. The ends of the front section and the rear section are provided with flange interfaces, and the free end of the middle section is provided with a detachable closed structure. The mechanical shearing assembly (402b) is installed inside the front section of the outer casing (402a). It includes a rotating guide structure (2b1) arranged from top to bottom, a rotating blade (2b2) ​​fixedly connected to the rotating guide structure (2b1), a fixed blade (2b3), and a fixed guide structure (2b4). The rotating force generated by the water flow impact under the guidance of the rotating guide structure (2b1) drives the rotating blade (2b2) ​​to rotate relative to the fixed blade (2b3), thereby mechanically breaking up the biofilm in the water. The fixed guide structure (2b4) directs the sheared water flow to the blades of the impeller (2c3) in the filter and self-cleaning assembly. A filter and self-cleaning assembly (402c), installed in the middle section of the housing (402a), includes: A rotatable cylindrical screen (2c1) separates the front and rear sections of the outer shell, so that the sheared water entering from the front section must pass through the screen before flowing out to the rear section; The impeller (2c3) is coaxially and fixedly connected to the cylindrical screen (2c1). It receives the impact of the water flow after being sheared by the fixed flow guiding structure (2b4), causing the impeller to rotate and drive the screen to rotate synchronously. The foreign object collector (2c5) is set inside the screen and forms an arc-shaped structure with a holding function. It is used to collect dirt that is intercepted by the screen and thrown out by the centrifugal force generated by the rotation of the cylindrical screen (2c1) and falls under the action of gravity.

2. The filter shear according to claim 1, characterized in that, The outer circumference of the fixed blade (2b3) is consistent with the inner diameter of the outer shell (402a), and the rotating blade (2b2) ​​and the rotating flow guide structure (2b1) have a movable gap with the inner diameter of the outer shell (402a); The fixed flow guiding structure (2b4) directs the sheared water flow to the blades of the impeller (2c3).

3. The filter shear according to claim 2, characterized in that, The rotating blade (2b2) ​​and the fixed blade (2b3) form a shearing gap of 0.5-2mm.

4. The filter shear according to any one of claims 1-3, characterized in that, The foreign object collector (2c5) also includes a through pipe (2c4), one end of which passes through the central mounting and positioning hole of the impeller (2c3) and extends into the screen (2c1), while the other end extends out of the outer shell (402a) to the outside; the arc-shaped inner wall of the foreign object collector (2c5) is fixed against the outer wall of the through pipe (2c4) and the cover (2c6) is facing downward.

5. A layered circulating cleaning system for fire-fighting water supply pipelines in high-rise buildings, used for the purification and cleaning of long-term stored water in fire-fighting water supply pipelines of high-rise buildings, characterized in that... The system is equipped with a self-cleaning filter shear for water treatment as described in claim 1, including: a main riser (100) that vertically penetrates each floor of the building; Each floor has a set of layered valve control units (200), including an inlet control valve (201) installed on the main riser (100), an isolation valve (202) installed in the middle section of the water supply branch pipe (300), and a bypass control valve (203) installed at the bypass inlet; the water supply branch pipe (300) is installed horizontally in each floor, with one end connected to the main riser (100) and the other end extending and branching to each fire-fighting water point on that floor; A bypass pipeline system (400) is vertically installed on one side of each main riser (100) and includes: a bypass inlet pipe section (401), a bypass outlet pipe section (403), and a filter shear (402) installed between the bypass inlet pipe section (401) and the bypass outlet pipe section (403); the filter shear (402) includes a mechanical shearing component (402b) and a filtration and self-cleaning component (402c). The mechanical shearing component (402b) generates rotational power through the impact force of the water flowing down, which drives the rotating blades to rotate relative to the fixed blades, thereby mechanically breaking up the biofilm in the water. The filtration and self-cleaning component (402c) includes a cylindrical screen for filtering and separating the sheared water. The central control system (600) is connected to the equipment on each floor through control cables to realize centralized control and monitoring of the system; The system adopts a bottom-up, layer-by-layer cleaning mode. Through the valve opening and closing combination of the layered valve control unit (200), the long-term stored water in the upper pipeline is diverted to the lower layer by gravity. After mechanical shearing and filtration treatment by the bypass pipeline system (400), the stored water is purified and cleaned.

6. The layered circulating cleaning system for fire-fighting water supply pipelines in high-rise buildings according to claim 5, characterized in that, The outer shell (402a) of the filter shearer (402) has a front section, a rear section and a middle section forming a branch, and the whole has a Y-shaped structure. The ends of the front section and the rear section are provided with flange interfaces, and the free end of the middle section is provided with a detachable closed structure. The mechanical shearing assembly (402b) includes a rotating guide structure (2b1) arranged from top to bottom, a rotating blade (2b2) ​​fixedly connected to the rotating guide structure (2b1), a fixed blade (2b3) and a fixed guide structure (2b4).

7. The layered circulating cleaning system for fire-fighting water supply pipelines in high-rise buildings according to claim 6, characterized in that, It also includes a magnetic coupling drive device, which automatically starts when the impact force of the water flow is insufficient.

8. The layered circulating cleaning system for fire-fighting water supply pipelines in high-rise buildings according to claim 7, characterized in that, The filtration and self-cleaning assembly (402c) also includes an impeller (2c3) and a foreign matter collector (2c5). The impeller (2c3) is coaxially and fixedly connected to the cylindrical screen. The sheared water flow impacts the blades of the impeller (2c3) in a directional manner, causing it to rotate and driving the screen to rotate synchronously. The dirt intercepted by the screen is thrown out by centrifugal force and falls into the foreign matter collector (2c5) for collection under the action of gravity.

9. The layered circulating cleaning system for fire-fighting water supply pipelines in high-rise buildings according to claim 8, characterized in that, An air inlet valve (301) is provided at the end of the water supply branch pipe (300). The system also includes a negative pressure generating device. When the drainage volume is detected to be lower than the expected value, the negative pressure generating device is automatically started and the air inlet valve (301) is opened at the same time. The negative pressure suction effect ensures that the stored water is completely drained.

10. The layered circulating cleaning system for fire-fighting water supply pipelines in high-rise buildings according to claim 8, characterized in that, It also includes a buffer water storage device (500) to solve the problem of mismatch in the capacity of the pipelines on each floor. The buffer water storage device (500) includes a buffer water tank (501) for temporarily storing the excess water released from the upper floor.

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