Environment-friendly pressure relief water recycling device for fire fighting

Abstract

The invention relates to the technical field of liquid recycling, and discloses a fire-fighting environment-friendly pressure relief water recycling device which comprises a water collecting assembly used for receiving pressure relief water of a fire-fighting system, and the water collecting assembly comprises a fixing block. The top end of the fixing block is provided with a water inlet connected with a fire-fighting pressure relief pipeline flange through a hose. According to the environment-friendly pressure relief water recycling device for fire fighting, in order to achieve efficient multi-stage filtration of pressure relief water for fire fighting, the pressure relief water is received through a fixing block, a water inlet and a water outlet of the water collecting assembly and guided into the filtering assembly, and a multi-stage filtering structure is formed by a filtering basket, a rectangular filtering plate, an elastic clamping ring, a conical dirt collecting hopper, a bent pipe and a circular filtering plate in the filtering shell; the size of a filter groove of the filter basket is larger than that of filter holes of the circular filter plate and the rectangular filter plate, and the multiple groups of bent pipes are matched with the circular filter plate, so that impurities with different particle sizes are effectively intercepted, the filtering effect is improved, and the impurities are convenient to clean.

Description

Technical Field

[0001] This invention relates to the field of liquid recycling technology, specifically to an environmentally friendly pressure relief water recycling device for fire fighting. Background Technology

[0002] During the operation of the fire protection system, in order to ensure the stability of the system pressure and avoid equipment damage due to overpressure, some of the pressure relief water needs to be discharged through the pressure relief device. Although this type of pressure relief water is not seriously polluted, it cannot be directly recycled because it carries pollutants such as pipe impurities and environmental dust.

[0003] Traditional treatment methods mostly involve direct discharge. With the deepening of environmental protection concepts and the prominence of water shortage problems, the recycling of fire-fighting pressure relief water has become a research hotspot in the industry. How to achieve efficient purification, recycling and reuse of pressure relief water and continuous operation of equipment has become a key direction for improving the environmental protection and economy of fire protection systems.

[0004] Existing fire-fighting pressure relief water treatment devices have certain technical defects and are difficult to meet practical application needs. First, the filtration structure design is simple, mostly single-stage filtration or simple multi-stage filtration, with insufficient filtration accuracy and poor targeting of impurities. It cannot effectively remove pollutants of different particle sizes, resulting in purified water quality that is difficult to meet the reuse standards of the fire-fighting system. At the same time, impurities tend to accumulate inside the filter components, requiring shutdown for cleaning and maintenance, affecting the continuous operation and stability of the fire-fighting system. Second, there is a lack of effective media transition structures. When disassembling and assembling filter components for maintenance, the discharge and treatment process of pressure relief water must be interrupted, which not only wastes water resources but may also cause fire-fighting water supply safety hazards due to equipment shutdown. Third, the deep purification and water quality testing links are incomplete. Some devices only have filtration functions and lack deep treatment steps such as adsorption and sterilization. Moreover, there is no real-time water quality monitoring and feedback mechanism, which cannot ensure the quality of the returned water. It is easy for substandard water quality to affect the normal operation of fire-fighting equipment, and it is also difficult to achieve efficient closed-loop utilization of water resources.

[0005] In view of this, we propose an environmentally friendly pressure relief water recycling device for fire fighting. Summary of the Invention

[0006] The purpose of this invention is to provide an environmentally friendly pressure relief water recycling device for fire fighting, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An environmentally friendly pressure relief water recycling device for fire fighting includes a water collection assembly for receiving pressure relief water from a fire fighting system. The water collection assembly includes a fixed block, with an inlet at the top of the fixed block connected to a fire relief pipe flange via a flexible hose, and an outlet at the bottom of the fixed block. The fixed block, the inlet, and the outlet are internally connected. A filter assembly is installed at the bottom of the water collection assembly for filtering the pressure relief water. The output end of the filter assembly is sealed to a purification assembly via a pipe for deep water purification. The output end of the purification assembly is sealed to a return assembly via a pipe for returning the purified water to the fire fighting system. The filter assembly includes a filter housing, which has a first cavity and a second cavity inside. A filter basket is snapped into the top of the filter housing. A rectangular filter plate is snapped into the inner wall groove of the filter housing by an elastic retainer. A guide pipe communicating with the purification assembly is provided at the bottom of the filter housing. The guide pipe is integrally formed with the filter housing and is connected to the first cavity.

[0008] In a further embodiment, a conical sludge collection hopper is snapped into the bottom of the filter basket, and a drain plug is threaded into the bottom of the conical sludge collection hopper. A bent pipe is fixedly installed inside the inclined side wall of the conical sludge collection hopper, and a circular filter plate is snapped into the opening at the top of the bent pipe. The conical sludge collection hopper and the bent pipe are located inside the second cavity. The size of the filter groove opened on the filter basket is larger than the size of the filter holes opened on the circular filter plate and the rectangular filter plate, thereby achieving better multi-stage filtration.

[0009] In a further embodiment, multiple sets of the bent pipe and circular filter plate are provided, which allows the pre-filtered medium to better enter the second cavity, while impurities are less likely to enter.

[0010] In a further embodiment, an auxiliary component is provided on the filter housing. The auxiliary component includes a frame, which is fixedly installed on the top of the filter housing. A vertical frame and a central frame are fixedly installed on the frame. A flow guide is fixedly installed at the bottom of the vertical frame and is located above the filter basket. A hydraulic cylinder is fixedly installed at the top of the frame, and a fixing block is fixedly connected to the piston end of the hydraulic cylinder. The movement trajectory of the water outlet is located above the flow guide for better flow guidance.

[0011] In a further embodiment, a hydraulic rod is hinged to the frame, and a hinge rod is hinged to the piston end of the hydraulic rod. A clamping plate is rotatably mounted on the bottom of the frame via a bearing. The other end of the hinge rod is fixedly connected to the clamping plate. A liquid storage tank is clamped inside the clamping plate. The liquid storage tank is located above the filter basket, thereby enabling a transition of the media flow path when the filter basket is assembled or disassembled.

[0012] In a further embodiment, the purification component includes a cylindrical body with a cap on the arc-shaped sidewall at the top. The input end of the cylindrical body is sealed with a flange connected to the output end of a flow guide pipe. Inside the cylindrical body, an activated carbon filter layer, a ceramic filter membrane, and a sterilization module are sequentially arranged along the water flow direction. The top end of a conical hood is fixedly connected below the input end at the top of the cylindrical body, thereby guiding the falling liquid medium circumferentially and avoiding single-point impact.

[0013] In a further embodiment, the sterilization and disinfection module includes an ultraviolet lamp and a lamp protective cover. The side of the lamp protective cover facing the center of the cylinder is made of quartz glass. The lamp protective cover is sealed and fixed to the inner wall of the cylinder. The ultraviolet lamp is sleeved inside the lamp protective cover. A round tube is fixedly installed on the side of the lamp protective cover away from the center of the cylinder for wiring and heat dissipation.

[0014] In a further embodiment, the sterilization and disinfection module is provided in multiple sets, and the multiple sets of sterilization and disinfection modules are arranged in an equally spaced circular array at the bottom of the cylinder with the center of the circular cross-section of the cylinder as the array center, so as to achieve better sterilization and disinfection effect.

[0015] In a further embodiment, the recirculation assembly includes a water outlet pipe, one end of which is fixedly installed on the bottom output end of the cylinder, and the other end of which is sealed to the water inlet of the recirculation pump. The water outlet of the recirculation pump is provided with a recirculation interface connected to the fire protection system pipeline.

[0016] In a further embodiment, a detection probe is installed on the water outlet pipe, and the detection probe is electrically connected to a water quality display. Both the water quality display and the filter housing are fixedly installed on the machine body.

[0017] Compared with the prior art, the present invention provides an environmentally friendly pressure relief water recycling device for fire fighting, which has the following beneficial effects: 1. This environmentally friendly fire-fighting pressure relief water recycling device achieves efficient multi-stage filtration of fire-fighting pressure relief water. The water is collected by the fixed block, inlet, and outlet of the water collection component and introduced into the filter component. The filter housing consists of a filter basket, rectangular filter plate, elastic retaining ring, conical sludge collection hopper, bend pipe, and circular filter plate, forming a multi-stage filtration structure. The filter basket and filter tank size is larger than the filter holes of the circular and rectangular filter plates. At the same time, multiple sets of bend pipes cooperate with the circular filter plates to effectively intercept impurities of different particle sizes, improve the filtration effect, and facilitate the cleaning of impurities.

[0018] 2. This environmentally friendly pressure relief water recycling device for fire protection ensures that the entire device remains operational during the disassembly and assembly of the filter components. Through the coordinated action of the auxiliary components—frame, vertical frame, guide frame, hydraulic cylinder, frame, hydraulic rod, hinge rod, clamping plate, and storage tank—when disassembling or assembling the filter basket, the hydraulic cylinder is activated to move the outlet away from the guide frame, and the extended hydraulic rod drives the storage tank to swing below the outlet to collect the water. After disassembly or assembly, the hydraulic rod is retracted to pour the water into the filter basket, thereby achieving a smooth transition of the medium flow path and avoiding a complete shutdown of the device.

[0019] 3. This environmentally friendly pressure relief water recycling device for fire protection achieves deep purification and safe recycling of pressure relief water. Through the purification components, including the cylinder, cylinder cover, conical hood, activated carbon filter layer, ceramic filter membrane, and sterilization module, the conical hood guides the water flow circumferentially to avoid single-point impact. The water sequentially passes through the activated carbon filter layer to adsorb odor impurities, the ceramic filter membrane for fine filtration, and then through multiple sets of circumferential array ultraviolet lamps, lamp protective covers, and round tubes for efficient sterilization and disinfection, thereby significantly improving the water purity and meeting the reuse standards of the fire protection system.

[0020] 4. This environmentally friendly pressure relief water recycling device for fire protection achieves accurate detection and reliable return of purified water through a return component consisting of an outlet pipe, a return pump, a detection probe, a water quality display, a return interface, and the main body. The detection probe monitors the water quality in the outlet pipe in real time and provides feedback through the water quality display. The return pump pumps the qualified water back to the fire protection system through the return interface, thereby realizing visualized water quality monitoring and water resource recycling, reducing fire water consumption, and meeting environmental protection requirements. Attached Figure Description

[0021] Figure 1 This is a first-view schematic diagram of the overall structure of the present invention; Figure 2 This is a second-view schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of a portion of the purification component of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram of region B in the middle; Figure 6 This is a cross-sectional schematic diagram of the filter housing of the present invention; Figure 7 This is a cross-sectional view of the filter housing from another perspective of the present invention; Figure 8 This is a cross-sectional schematic diagram of a portion of the filter component of the present invention; Figure 9 This is a schematic diagram of the structural connections of the auxiliary component of the present invention; Figure 10 This is a three-dimensional structural rendering of the present invention.

[0022] Explanation of icon numbers: 1. Water collection assembly; 10. Fixing block; 11. Water inlet; 12. Water outlet; 2. Filter assembly; 21. Filter housing; 211. First cavity; 212. Second cavity; 22. Filter basket; 23. Elastic retaining ring; 231. Rectangular filter plate; 24. Guide pipe; 25. Conical sludge collection hopper; 26. Sludge discharge plug; 27. Bend; 28. Circular filter plate; 3. Auxiliary components; 31. Frame; 32. Vertical frame; 33. Flow guide frame; 34. Hydraulic cylinder; 35. Frame; 36. Hydraulic rod; 37. Hinge rod; 38. Clamping plate; 39. Liquid storage tank; 4. Purification components; 41. Cylinder body; 411. Cylinder cover; 42. Activated carbon filter layer; 43. Ceramic filter membrane; 44. Sterilization and disinfection module; 441. Ultraviolet lamp tube; 442. Lamp tube protective cover; 443. Round tube; 45. Conical cover; 5. Recirculation assembly; 51. Outlet pipe; 52. Recirculation pump; 53. Detection probe; 54. Water quality display; 55. Recirculation interface; 56. Main body. Detailed Implementation

[0023] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0025] Please see Figures 1-10 The present invention provides a technical solution: An environmentally friendly pressure relief water recycling device for fire protection includes a water collection component 1 for receiving pressure relief water from a fire protection system. The water collection component 1 includes a fixed block 10, with an inlet 11 at the top of the fixed block 10 connected to a fire pressure relief pipe flange via a hose, and an outlet 12 at the bottom of the fixed block 10. The fixed block 10, the inlet 11, and the outlet 12 are internally connected. A filter component 2 is installed at the bottom of the water collection component 1 for filtering the pressure relief water. The output end of the filter component 2 is sealed to a purification component 4 via a pipe for deep water purification. The output end of the purification component 4 is sealed to a return component 5 via a pipe for returning the purified water to the fire protection system.

[0026] In one embodiment of the present invention, the filter assembly 2 includes a filter housing 21, with a first cavity 211 and a second cavity 212 inside the filter housing 21. A filter basket 22 is snapped into the top of the filter housing 21. A rectangular filter plate 231 is snapped into the inner wall groove of the filter housing 21 by an elastic retaining ring 23. A guide pipe 24 communicating with the purification assembly 4 is provided at the bottom of the filter housing 21. The guide pipe 24 is integrally formed with the filter housing 21 and is connected to the first cavity 211. In addition, a conical sludge collection hopper 25 is snapped into the bottom of the filter basket 22. The bottom of the hopper 25 is threaded with a drain plug 26. A bent pipe 27 is fixedly installed inside the inclined side wall of the conical sludge collection hopper 25. A circular filter plate 28 is snapped into the opening at the top of the bent pipe 27. The conical sludge collection hopper 25 and the bent pipe 27 are located inside the second cavity 212. The size of the filter groove opened on the filter basket 22 is larger than the size of the filter holes opened on the circular filter plate 28 and the rectangular filter plate 231, thereby achieving better multi-stage filtration. In addition, there are six sets of bent pipes 27 and circular filter plates 28, which allows the medium after preliminary filtration to enter the second cavity 212 better, while impurities are not easy to enter.

[0027] In one embodiment of the present invention, an auxiliary component 3 is provided on the filter housing 21. The auxiliary component 3 includes a frame 31, which is fixedly installed on the top of the filter housing 21. A vertical frame 32 and a frame 35 are fixedly installed on the frame 31. A flow guide 33 is fixedly installed at the bottom of the vertical frame 32 and is located above the filter basket 22. A hydraulic cylinder 34 is fixedly installed at the top of the frame 31. The piston end of the hydraulic cylinder 34 is fixedly connected to a fixing block 10. The movement trajectory of the water outlet 12 is located above the flow guide 33 for better flow guidance. In addition, a hydraulic rod 36 is hingedly installed on the frame 35, and the piston end of the hydraulic rod 36 is hingedly installed on the frame 35. One end of the frame 35 is equipped with a hinge rod 37, and the bottom end of the frame 35 is rotatably mounted with a clamping plate 38 via a bearing. The other end of the hinge rod 37 is fixedly connected to the clamping plate 38. A liquid storage tank 39 is clamped inside the clamping plate 38. The liquid storage tank 39 is located above the filter basket 22, so that the medium flow path can be transitioned when the filter basket 22 is disassembled and assembled. By activating the hydraulic cylinder 34, the outlet 12 is moved away from the guide frame 33. At the same time, the hydraulic rod 36 is extended in advance, so that the opening of the liquid storage tank 39 swings below the outlet 12. After disassembly and assembly, the hydraulic rod 36 is retracted, and the liquid storage tank 39 swings in the opposite direction, pouring the medium filled inside into the filter basket 22.

[0028] In one embodiment of the present invention, the purification component 4 includes a cylindrical body 41, with a cap 411 provided on the arc-shaped sidewall at the top of the cylindrical body 41. The input end of the cylindrical body 41 is sealed with a flange connected to the output end of the guide pipe 24. Inside the cylindrical body 41, an activated carbon filter layer 42, a ceramic filter membrane 43, and a sterilization module 44 are arranged sequentially along the water flow direction. The top small end of a conical cover 45 is fixedly connected below the input end at the top of the cylindrical body 41, thereby guiding the falling liquid medium circumferentially and avoiding single-point impact. In addition, the sterilization module 44 includes an ultraviolet lamp 441 and a lamp protective cover. 442, the side of the lamp tube protective cover 442 facing the center of the cylinder 41 is made of quartz glass. The lamp tube protective cover 442 is sealed and fixed to the inner wall of the cylinder 41. The ultraviolet lamp tube 441 is sleeved inside the lamp tube protective cover 442. A round tube 443 is fixedly installed on the side of the lamp tube protective cover 442 away from the center of the cylinder 41 for wiring and heat dissipation. In addition, there are five sets of sterilization and disinfection modules 44. The five sets of sterilization and disinfection modules 44 are all arranged in a circular array at equal intervals at the bottom of the cylinder 41 with the center of the circular cross section of the cylinder 41 as the array center, so as to improve the sterilization and disinfection effect.

[0029] In one embodiment of the present invention, the reflux assembly 5 includes a water outlet pipe 51. One end of the water outlet pipe 51 is fixedly installed on the bottom output end of the cylinder 41, and the other end of the water outlet pipe 51 is sealed to the water inlet end of the reflux pump 52. The water outlet end of the reflux pump 52 is provided with a reflux interface 55 connected to the fire protection system pipeline. In addition, a detection probe 53 is provided on the water outlet pipe 51. The detection probe 53 is electrically connected to the water quality display 54. The water quality display 54 and the filter housing 21 are both fixedly installed on the body 56.

[0030] Working Principle: During the operation of the fire protection system, the pressure-relief water is connected to the inlet flange 11 of the water collection assembly 1 via a dedicated hose. It is then introduced into the internal channel of the fixed block 10 and transported to the filter assembly 2 via the outlet 12 at the bottom of the fixed block 10, initiating a multi-stage filtration process. The first step is preliminary interception filtration: the pressure-relief water enters the top of the filter housing 21 along the guide direction of the guide frame 33, flowing directly into the filter basket 22 clipped inside the filter housing 21. The filter basket 22, through a pre-set large-size filter groove, quickly intercepts larger impurities in the water, such as gravel, metal fragments, and fibrous debris, preventing large particles from entering the subsequent precision filtration structure and causing blockage. The water after the first filtration permeates downwards under gravity, entering the area below the filter basket 22. The second step is secondary filtration: the permeated liquid flows smoothly into the conical sludge collection hopper 25. The conical sludge collection hopper 25 adopts a sloping structure design, which guides impurities to accumulate at the bottom. Simultaneously, the liquid enters the inner... The circular filter plate 28, which is snapped into the opening at the top of the bend 27, performs secondary interception of medium-sized impurities in the water, effectively removing the fine particles remaining after the first filtration. Some of the intercepted impurities are retained in the conical sludge collection hopper 25, while others adhere to the surface of the circular filter plate 28. The impurities can be quickly cleaned by unscrewing the drain plug 26 at the bottom of the conical sludge collection hopper 25. The third step is tertiary filtration: the liquid filtered by the circular filter plate 28 enters the second cavity 212 of the filter housing 21. After the water flow is buffered in the cavity, it permeates into the rectangular filter plate 231. The rectangular filter plate 231 is tightly snapped into the groove on the inner wall of the filter housing 21 by the elastic retaining ring 23. The elastic retaining ring 23 can fill the gap through its own elastic deformation, greatly enhancing the sealing between the rectangular filter plate 231 and the filter housing 21. The rectangular filter plate 231 performs fine filtration of the water through tiny filter holes, removing residual tiny impurities and colloidal particles. Finally, the filtered water enters the first cavity 211 of the filter housing 21.

[0031] To address the fire safety hazards caused by system shutdown during filter assembly / maintenance, auxiliary assembly 3 utilizes coordinated mechanical actions to ensure smooth switching and restoration of the media flow path, guaranteeing continuous operation of the entire process. The frame 31 of auxiliary assembly 3 is fixedly mounted on top of filter housing 21, providing stable support for the vertical frame 32, frame 35, and hydraulic cylinder 34. The guide frame 33 at the bottom of the vertical frame 32 corresponds to the positions of the outlet 12 and filter basket 22, ensuring water is directed into the filter basket 22 during normal operation. When the filter basket 22 requires disassembly / cleaning or maintenance due to impurity accumulation, the controller activates the hydraulic cylinder 34. The piston end of the hydraulic cylinder 34 moves the fixed block 10 laterally, thereby pulling the outlet 12 synchronously away from the area above the guide frame 33, cutting off the original flow path. Simultaneously, the hydraulic rod 36, hinged to the frame 35, activates and extends. The piston end of the hydraulic rod 36 transmits force through the hinge rod 37, driving the... The clamping plate 38, which is rotatably connected to the bearing at the bottom of the frame 35, rotates. The clamping plate 38 holds the liquid storage tank 39 in place by the inner slot. It swings synchronously with the rotation of the clamping plate 38 until the opening of the liquid storage tank 39 is aligned with the bottom of the water outlet 12, receiving the continuously discharged pressure relief water from the water outlet 12 to avoid water waste and environmental pollution. At this time, the device remains in the state of pressure relief water discharge and does not need to be stopped. After the filter basket 22 is disassembled, cleaned and reset, the controller commands the hydraulic rod 36 to retract, which drives the clamping plate 38 to rotate in the opposite direction through the hinge rod 37. The liquid storage tank 39 swings in the opposite direction along with it, pouring the received water into the filter basket 22 to ensure that the medium re-enters the filtration process. Then the hydraulic cylinder 34 moves in the opposite direction, driving the fixing block 10 and the water outlet 12 to reset above the guide frame 33. The guide frame 33 once again plays the role of guiding the flow, guiding the water into the filter basket 22, completing the restoration of the medium flow path. The whole process does not require interruption of the device operation, taking into account both maintenance convenience and the continuity of the fire protection system.

[0032] After impurities are removed by the filter assembly 2, the water is introduced into the cylinder 41 of the purification assembly 4 through the guide pipe 24 integrally formed with the filter housing 21 and connected by a sealed flange, thus initiating a deep purification process to ensure that the water quality meets the reuse standards of the fire protection system. The cylinder cover 411 on the arc-shaped side wall at the top of the cylinder 41 facilitates subsequent disassembly and maintenance of the internal purification structure. After the water enters the cylinder 41, it first comes into contact with the conical hood 45 fixedly connected below the top input end. The conical hood 45 adopts a structure design with the small end facing up and the large end facing down, which can diffuse the vertically falling water in all directions. The water is guided to avoid single-point impact on subsequent structures, preventing damage or blockage and ensuring the stability and durability of the purification process. The guided water falls evenly, passing sequentially through the activated carbon filter layer 42 and the ceramic filter membrane 43 along the water flow direction. The activated carbon filter layer 42, composed of high specific surface area activated carbon particles, can efficiently adsorb odors, pigments, residual organic matter, and some heavy metal ions in the water, achieving preliminary purification and deodorization. The ceramic filter membrane 43 features a precise microporous structure and high filtration accuracy, further removing residual trace suspended particles, colloidal substances, and bacterial buds from the water. The adsorption and fine filtration of spores significantly improve water purity. After adsorption and fine filtration, the water continues to flow downwards to the bottom of the cylinder 41, passing through the sterilization and disinfection module 44. Five sets of sterilization and disinfection modules 44 are evenly distributed circumferentially with the center of the circular cross-section of the cylinder 41 as the array center, which can achieve all-round sterilization of the water body without any disinfection dead corners. After the ultraviolet lamp tube 441 in each set of sterilization and disinfection modules 44 is connected to the power supply, it emits high-intensity ultraviolet light to inactivate bacteria, viruses, fungi and other microorganisms in the water. The lamp tube protective cover 442 is fitted on the outside of the ultraviolet lamp tube 441, facing the cylinder 41. The center side is made of quartz glass, which can effectively block water impact and impurity adhesion, protecting the ultraviolet lamp tube 441 from damage, while ensuring that the ultraviolet penetration is not affected, thus guaranteeing the sterilization effect. The lamp tube protective cover 442 is fixedly installed on the center side away from the cylinder 41 with a round tube 443. On the one hand, it provides a storage channel for the ultraviolet lamp tube 441 circuit, and on the other hand, it can accelerate the heat dissipation during lamp operation, avoiding high temperature from affecting the service life of the equipment, ensuring the long-term stable operation of the sterilization and disinfection module 44, and the purity of the water after deep purification is greatly improved, meeting the reuse requirements of the fire protection system.

[0033] After deep purification, the water enters the processing flow of the return assembly 5 through the outlet pipe 51 fixedly installed at the bottom of the cylinder 41. This process ensures accurate water quality detection and reliable return of compliant water. One end of the outlet pipe 51 of the return assembly 5 is sealed to the cylinder 41, and the other end is sealed to the inlet of the return pump 52, ensuring leak-free water transfer. When the controller starts the return pump 52, it generates negative pressure, drawing the purified water to flow stably within the outlet pipe 51. During this process, the detection probe 53 installed on the outlet pipe 51 collects key water quality indicators in real time, including turbidity, total bacterial count, and pH value. The detection data is synchronously fed back to the water quality display 54 via wired transmission. The water quality display 54 is fixedly installed on the unit 56, and operators can access it through the display. The display screen provides a direct view of the water quality, enabling visual monitoring and timely assessment of whether the water meets standards. When the detection probe 53 detects that the water quality meets the standards, the return pump 52 continues to operate, pumping the compliant water back to the fire protection system through the return interface 55 at the outlet, which is then sealed and connected to the fire protection system pipeline for reuse in fire water supply, thus completing the recycling of pressure relief water. If the detection result shows that the water quality does not meet the standards, the controller will trigger an alarm and simultaneously switch the pipeline through the subsequent supporting control device to return the non-compliant water to the cylinder 41 of the purification component 4 for deep purification treatment again until the water quality meets the standards before restarting the return process. This ensures that the quality of the returned water meets fire protection requirements, maximizes the recycling of water resources, significantly reduces fire water consumption, and aligns with environmental protection concepts and energy conservation and emission reduction needs.

[0034] All electrical components mentioned in this application are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device that controls the hydraulic cylinder 34, hydraulic rod 36, sterilization module 44, reflux pump 52, detection probe 53, and water quality display 54. The signal interaction of each component adopts the PLC control protocol commonly used in industrial equipment, which is common knowledge to those skilled in the art and can be implemented without further detailed description. The control logic and signal interaction method are existing technologies and will not be described in detail. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding, which are mature in the prior art. The standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art.

[0035] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that each electrical appliance can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure appearing in this application document, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A fire-fighting environmentally friendly pressure relief water recycling device, comprising a water collection assembly (1) for receiving pressure relief water from a fire-fighting system, the water collection assembly (1) comprising a fixed block (10), the top of the fixed block (10) being provided with an inlet (11) connected to a fire-fighting pressure relief pipe flange via a flexible hose, and the bottom of the fixed block (10) being provided with an outlet (12), the fixed block (10), the inlet (11) and the outlet (12) being internally connected, characterized in that: The bottom of the water collection component (1) is provided with a filter component (2) for filtering the pressure relief water; the output end of the filter component (2) is sealed to a purification component (4) through a pipe for deep purification of water quality; the output end of the purification component (4) is sealed to a return component (5) through a pipe for returning the purified water to the fire protection system. The filter assembly (2) includes a filter housing (21), which has a first cavity (211) and a second cavity (212) inside. A filter basket (22) is snapped into the top of the filter housing (21). A rectangular filter plate (231) is snapped into the groove on the inner wall of the filter housing (21) by an elastic retainer (23). A guide pipe (24) communicating with the purification assembly (4) is provided at the bottom of the filter housing (21). The guide pipe (24) is integrally formed with the filter housing (21) and is connected to the first cavity (211).

2. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 1, characterized in that: A conical sludge collection hopper (25) is snapped into the bottom of the filter basket (22). A drain plug (26) is threaded into the bottom of the conical sludge collection hopper (25). A bent pipe (27) is fixedly installed inside the inclined side wall of the conical sludge collection hopper (25). A circular filter plate (28) is snapped into the opening at the top of the bent pipe (27). The conical sludge collection hopper (25) and the bent pipe (27) are located inside the second cavity (212). The size of the filter groove opened on the filter basket (22) is larger than the size of the filter holes opened on the circular filter plate (28) and the rectangular filter plate (231).

3. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 2, characterized in that: Multiple sets of the bent pipe (27) and circular filter plate (28) are provided so that the medium after preliminary filtration can better enter the second cavity (212).

4. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 1, characterized in that: An auxiliary component (3) is provided on the filter housing (21). The auxiliary component (3) includes a frame (31). The frame (31) is fixedly installed on the top of the filter housing (21). A vertical frame (32) and a frame (35) are fixedly installed on the frame (31). A flow guide (33) is fixedly installed at the bottom of the vertical frame (32). The flow guide (33) is located above the filter basket (22). A hydraulic cylinder (34) is fixedly installed at the top of the frame (31). A fixing block (10) is fixedly connected to the piston end of the hydraulic cylinder (34). The movement trajectory of the outlet (12) is located above the flow guide (33).

5. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 4, characterized in that: A hydraulic rod (36) is hinged to the frame (35) and a hinge rod (37) is hinged to the piston end of the hydraulic rod (36). A clamping plate (38) is rotatably installed at the bottom of the frame (35) through a bearing. The other end of the hinge rod (37) is fixedly connected to the clamping plate (38). A liquid storage tank (39) is clamped inside the clamping plate (38). The liquid storage tank (39) is located above the filter basket (22).

6. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 1, characterized in that: The purification component (4) includes a cylinder (41), and a cylinder cover (411) is provided on the arc-shaped side wall at the top of the cylinder (41). The input end of the cylinder (41) is sealed with a flange connected to the output end of the guide pipe (24). An activated carbon filter layer (42), a ceramic filter membrane (43) and a sterilization and disinfection module (44) are arranged sequentially inside the cylinder (41) along the water flow direction. The top small end of the cone-shaped cover (45) is fixedly connected below the input end at the top of the cylinder (41).

7. The environmentally friendly pressure relief water recycling device for fire fighting according to claim 6, characterized in that: The sterilization and disinfection module (44) includes an ultraviolet lamp tube (441) and a lamp tube protective cover (442). The side of the lamp tube protective cover (442) facing the center of the cylinder (41) is made of quartz glass. The lamp tube protective cover (442) is sealed and fixed to the inner wall of the cylinder (41). The ultraviolet lamp tube (441) is sleeved inside the lamp tube protective cover (442). A round tube (443) is fixedly installed on the side of the lamp tube protective cover (442) away from the center of the cylinder (41).

8. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 7, characterized in that: The sterilization and disinfection module (44) is provided in multiple sets, and the multiple sets of sterilization and disinfection modules (44) are arranged in an evenly spaced circular array at the bottom of the cylinder (41) with the center of the circular cross section of the cylinder (41) as the array center.

9. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 6, characterized in that: The reflux assembly (5) includes a water outlet pipe (51). One end of the water outlet pipe (51) is fixedly installed on the bottom output end of the cylinder (41). The other end of the water outlet pipe (51) is sealed and connected to the water inlet of the reflux pump (52). The water outlet of the reflux pump (52) is provided with a reflux interface (55) connected to the fire protection system pipeline.

10. The fire-fighting environmentally friendly pressure relief water recycling device according to claim 9, characterized in that: A detection probe (53) is installed on the water outlet pipe (51). The detection probe (53) is electrically connected to the water quality display (54). The water quality display (54) and the filter housing (21) are both fixedly installed on the body (56).

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