Pressure reducing valve with magnetic filtering and sewage discharging functions

Abstract

The invention relates to the technical field of pressure reducing valves, and discloses a pressure reducing valve with magnetic filtering and sewage discharging functions. Water flow is input into the interception outer cavity of the filtering part from the water inlet port, and is filtered by the filtering part and magnetically adsorbed by the magnetic adsorption part; the filtered water flow enters the output inner cavity, then enters the pressure reducing part through the communicating cavity in the connecting valve body to be subjected to pressure reduction and then is discharged from the water outlet port, so that filtering and pressure reducing operation of the water flow is completed, and the water flow with the pressure not larger than the pressure limited by the pressure reducing part and the filtered water flow is provided for the water outlet port; large-particle impurities filtered out by the filtering part and ferromagnetic impurities magnetically adsorbed by the magnetic adsorption part are isolated in the interception outer cavity and continuously accumulated, at the moment, the pollution discharge part can be opened, water flow can be directly discharged from the interception outer cavity to the pollution discharge part, the impurities can be discharged, the filtering capacity of the filtering part is recovered, and the service life of the filter part is prolonged. Further, the water flow can be effectively and continuously decompressed and filtered, and the water use safety at the rear end is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve with magnetic filtration and blowdown function. BACKGROUND

[0002] In fluid control systems, pressure reducing valves and filtration devices are two crucial components, respectively responsible for pressure regulation and medium purification. Pressure reducing valves are mainly used to stabilize the reduction of high-pressure fluid at the inlet to the required outlet pressure, ensuring the safe operation of downstream equipment. Filtration devices are used to intercept particulate impurities in the fluid to prevent pipeline blockage or key component wear.

[0003] In current fluid control system design, pressure reducing valves and filtration devices are usually installed independently, i.e., impurities are removed by filters first, and then pressure is adjusted by pressure reducing valves. Although this separate design can meet basic functional requirements, it has obvious shortcomings in terms of space occupation, maintenance cost, and system integration, especially in compact equipment or space-limited industrial scenarios. The series installation of multiple independent valve bodies not only increases the complexity of the pipeline, but also may lead to increased pressure drop loss, reducing the overall efficiency of the system.

[0004] From the perspective of spatial layout, the series connection of multiple valve bodies increases the length of the pipeline, not only occupying valuable equipment installation space, but also possibly introducing additional flow resistance due to additional structures such as elbows and flange connections. The segmented valve group has a higher risk of leakage, and each connection point may become a source of failure due to vibration, corrosion, or seal aging. In contrast, an integrated pressure reducing valve can concentrate filtration, pressure reduction, and blowdown functions in one valve body, significantly reducing the number of external interfaces, thereby reducing the probability of leakage and improving system reliability. SUMMARY

[0005] To overcome the shortcomings of the prior art, the present application provides a pressure reducing valve with magnetic filtration and blowdown function.

[0006] To solve the above technical problems, the present application provides the following technical solutions: The application discloses a pressure reducing valve with magnetic filtering and blowdown functions, which comprises a connecting valve body, the connecting valve body comprises a water inlet port, a water outlet port, a filtering port and a pressure reducing port, the filtering port is connected and sealed with a filtering part, and the pressure reducing port is connected and sealed with a pressure reducing part; a magnetic adsorption part is arranged outside the filtering part in a sleeved mode, and a blowdown part is arranged at one end of the filtering part away from the filtering port; the filtering part comprises a trapping outer cavity and an output inner cavity, water flows into the trapping outer cavity from the water inlet port, impurities are trapped in the trapping outer cavity after the water flow is filtered by the filtering part and magnetically adsorbed by the magnetic adsorption part, the filtered water flow enters the pressure reducing part for pressure reduction through the output inner cavity, and finally is discharged from the water outlet port; when the blowdown part is opened, the water flow in the trapping outer cavity can directly discharge from the blowdown part with impurities.

[0007] Preferably, one end of the connecting valve body close to the water outlet port is further provided with a detection port, and the detection port can be connected with a detection instrument; one side of the connecting valve body is further provided with a backflushing port, and the backflushing port is in communication between one end inside the connecting valve body and the output inner cavity.

[0008] Preferably, the water inlet port is connected and sealed with a water inlet three-way valve, the water inlet three-way valve comprises a backflushing interface, the backflushing interface is in communication with the backflushing port through a backflushing pressurizing pipe, the backflushing pressurizing pipe is serially provided with a booster pump, and under the booster output provided by the booster pump, the water pressure of water input from the backflushing port to the output inner cavity is greater than the maximum through water pressure of the pressure reducing part.

[0009] Preferably, the filtering part comprises, from outside to inside, a filtering connecting shell, a coarse filtering sleeve, a fine filtering sleeve and a guide core barrel; a sealing bottom pad is fixedly arranged at the bottom end of the guide core barrel, the sealing bottom pad can seal the interval bottom end between the coarse filtering sleeve and the fine filtering sleeve, and the filtering precision of the coarse filtering sleeve is less than that of the fine filtering sleeve.

[0010] Preferably, the coarse filtering sleeve can freely rotate between the filtering connecting shell and the fine filtering sleeve; the bottom end of the coarse filtering sleeve is a connecting prismatic barrel, a prismatic connecting barrel is arranged outside the connecting prismatic barrel, a driving prismatic barrel is arranged outside the prismatic connecting barrel at the bottom end of the filtering connecting shell, and rotation of the driving prismatic barrel can drive the coarse filtering sleeve to rotate through rotation of the prismatic connecting barrel.

[0011] Preferably, the magnetic adsorption part comprises an adsorption mounting ring, the inside of the adsorption mounting ring is provided with a plurality of adsorption magnets, the interval between two adjacent adsorption magnets is equal; the outside of the filter connecting shell is provided with a plurality of supporting blocks, the inner wall of the adsorption mounting ring and between two adjacent adsorption magnets is provided with a plurality of sliding-out grooves, the cross-sectional area of the sliding-out grooves is larger than that of the supporting blocks.

[0012] Preferably, the fine filter sleeve can isolate impurities outside the fine filter sleeve, each adsorption magnet can adsorb magnetic impurities in the water flow on the inner wall of the filter connecting shell; the cylinder wall of the coarse filter sleeve is embedded with a plurality of silica gel scraping strips, the two ends of the silica gel scraping strips are respectively attached to the inner wall of the filter connecting shell and the outer wall of the fine filter sleeve; the silica gel scraping strips can scrape the inner wall of the filter connecting shell and the outer wall of the fine filter sleeve at the two ends when the coarse filter sleeve rotates.

[0013] Preferably, the pollution discharge part comprises a pollution discharge ball valve and a pollution discharge plug, the top end of the pollution discharge ball valve is connected and sealed with the bottom of the filter part; the pollution discharge plug is threadedly connected between the bottom end of the pollution discharge ball valve, the inside of the pollution discharge plug is provided with a sealing washer; the pollution discharge plug is further connected between the outer wall of the pollution discharge ball valve through a flexible guide chain.

[0014] Preferably, the pressure reducing part comprises a pressure reducing valve core, a pressure reducing valve cover and a pressure reducing spring, the pressure reducing valve cover is connected and sealed with the pressure reducing port, the pressure reducing valve core extends into the inside of the pressure reducing port; the pressure reducing valve core comprises a fixed valve core and an adjusting valve core, the fixed valve core is clamped between the pressure reducing port, the adjusting valve core is sleeved in the fixed valve core; the top end and the bottom end of the pressure reducing spring are respectively provided with an adjusting top cover and an isolation pad plate, the adjusting top cover is connected between the pressure reducing valve cover through an adjusting screw, the isolation pad plate is connected between the adjusting valve core through an isolation screw.

[0015] Preferably, the rotation of the adjusting screw can drive the adjusting top cover to move the pressure reducing spring; the outer wall of the fixed valve core is provided with a plurality of communication grooves, the water flow outside the fixed valve core can pass through each communication groove to enter between the fixed valve core and the adjusting valve core; the bottom end of the fixed valve core is provided with a plurality of balance through holes penetrating to the top end of the fixed valve core, the water pressure at the bottom end of the fixed valve core can be conducted to the bottom surface of the isolation pad plate through each balance through hole.

[0016] Compared with the prior art, the present application provides a pressure reducing valve with magnetic filtering and pollution discharge functions, which has the following beneficial effects: 1. The pressure reducing valve with magnetic filtration and pollution discharge function, water flows from the water inlet port into the interception outer cavity of the filter part, and is filtered by the filter part and magnetically adsorbed by the magnetic adsorption part; the filtered water flows into the output inner cavity, and then enters the pressure reducing part through the communication cavity connected to the inside of the valve body, is reduced in pressure, and is discharged from the water outlet port, thereby completing the filtration and pressure reduction of the water flow, providing the water outlet port with a pressure not greater than the limit of the pressure reducing part and filtered water flow; after being used for a period of time, the large-particle impurities filtered by the filter part and the ferromagnetic impurities magnetically adsorbed by the magnetic adsorption part are all isolated in the interception outer cavity, at which time the pollution discharge part can be opened, and the water flow can be directly discharged from the interception outer cavity to the pollution discharge part, thereby discharging the impurities and restoring the filtration capacity of the filter part, and the water flow can be effectively continuously reduced in pressure and filtered, thereby ensuring the safety of the water used at the back end.

[0017] 2. The pressure reducing valve with magnetic filtration and pollution discharge function, when the filter part needs to be back-flushed, the pollution discharge part is first opened, the valve core of the water inlet three-way valve is rotated, the water flow is transported from the water inlet end of the water inlet three-way valve to the back-flushing interface, the water flow is pressurized by the booster pump and flows into the output inner cavity from the back-flushing port, at which time the water flow in the filter part flows from the output inner cavity to the interception outer cavity, and because the booster pump is involved at this time, the water pressure input from the back-flushing port to the output inner cavity is greater than the maximum through water pressure of the pressure reducing part, so that the pressure reducing part is closed, and the water flow mainly flows to the interception outer cavity, and under the impact of the pressurized water flow, the impurities remaining in the interception outer cavity can be discharged from the pollution discharge part, thereby restoring the filtration capacity of the filter part through back-flushing.

[0018] 3. The pressure reducing valve with magnetic filtration and pollution discharge function, the pollution discharge part is opened, and the magnetic adsorption part is removed from the outside of the filter part, then the external rotation driving prism cylinder can be driven, the driving of the coarse filter sleeve is realized through the transmission of the prism connecting cylinder, the silica gel scraping strip rotates with the coarse filter sleeve to scrape the inner wall of the filter connecting shell and the outer wall of the fine filter sleeve at both ends, thereby scraping and removing the impurities adhering to the inner wall of the filter connecting shell and the outer wall of the fine filter sleeve, and the impurities can enter the open pollution ball valve with the water flow through the connecting prism cylinder, and are discharged from the bottom end of the pollution ball valve, thereby effectively restoring the filtration capacity of the filter part and ensuring the stable progress of the subsequent filtration process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic view of the pressure reducing valve with magnetic filtration and pollution discharge function of the application; Figure 2 It is a perspective structural schematic view of the pressure reducing valve with magnetic filtration and pollution discharge function of the application with a back-flushing assembly; Figure 3Figure 2 is a perspective view of the backflush assembly of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 4 Figure 3 is a perspective view of the connecting valve body of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 5 Figure 4 is a perspective view of the filtration part, magnetic adsorption part and sewage discharge part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 6 Figure 5 is an assembly view of the filtration part, magnetic adsorption part and sewage discharge part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 7 Figure 6 is an internal structure view of the filtration part, magnetic adsorption part and sewage discharge part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 8 Figure 7 is an assembly view of the filtration part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 9 Figure 8 is an installation structure view of the pressure reducing port and pressure reducing part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 10 Figure 9 is a perspective view of the pressure reducing part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 11 Figure 10 is an assembly view of the pressure reducing part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application; Figure 12 Figure 11 is another assembly view of the pressure reducing part of the pressure reducing valve with magnetic filtration and sewage discharge function of the present application.

[0020] In the figure: 1, connecting valve body; 11, water inlet port; 12, water outlet port; 13, filtration port; 14, pressure reducing port; 15, detection port; 16, backflush port; 2, filtration part; 21, filtration connecting shell; 211, support stopper; 22, coarse filtration sleeve; 221, connecting prismatic cylinder; 222, silica gel scraping strip; 23, fine filtration sleeve; 24, guide core cylinder; 25, sealing bottom pad; 26, prismatic connecting cylinder; 27, driving prismatic cylinder; 3, pressure reducing part; 31, pressure reducing valve core; 311, fixed valve core; 312, adjusting valve core; 32, pressure reducing valve cover; 33, pressure reducing spring; 34, adjusting top cover; 35, isolation pad plate; 36, adjusting screw; 37, isolation screw; 4, magnetic adsorption part; 41, adsorption mounting ring; 411, sliding-out groove; 42, adsorption magnet; 5, sewage discharge part; 51, sewage discharge ball valve; 52, sewage discharge plug; 53, sealing washer; 54, flexible guide chain; 6, water inlet tee valve; 61, backflush interface; 62, backflush pressurizing pipe; 63, pressure increasing pump. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0022] As introduced in the background, there are deficiencies in the prior art. In order to solve the above technical problems, the present application provides a pressure reducing valve with magnetic filtering and sewage discharge functions.

[0023] Embodiment one: Please refer to Figures 1-12 The pressure reducing valve with magnetic filtering and sewage discharge functions comprises a connecting valve body 1, the connecting valve body 1 comprises a water inlet port 11, a water outlet port 12, a filtering port 13 and a pressure reducing port 14, the filtering port 13 is connected and sealed with a filtering part 2, and the pressure reducing port 14 is connected and sealed with a pressure reducing part 3; a magnetic adsorption part 4 is arranged outside the filtering part 2, and a sewage discharge part 5 is arranged at one end of the filtering part 2 away from the filtering port 13; the filtering part 2 comprises a trapping outer cavity and an output inner cavity, water flows from the water inlet port 11 into the trapping outer cavity, after being filtered by the filtering part 2 and magnetically adsorbed by the magnetic adsorption part 4, impurities are trapped in the trapping outer cavity, filtered water flows through the output inner cavity and then enters the pressure reducing part 3 for pressure reduction, and finally is discharged from the water outlet port 12; when the sewage discharge part 5 is open, water in the trapping outer cavity can carry impurities and directly discharge from the sewage discharge part 5.

[0024] In use, the pressure reducing valve with magnetic filtration and pollution discharge function is installed at the required position, wherein the water inlet port 11 and the water outlet port 12 are connected with the water path respectively, then the filtration part 2 and the pressure reducing part 3 are connected and sealed with the filtration port 13 and the pressure reducing port 14 respectively, the magnetic adsorption part 4 is sleeved outside the filtration part 2, and the pollution discharge part 5 is installed at the bottom end of the filtration part 2 (in specific use, the entire pressure reducing valve with magnetic filtration and pollution discharge function can be pre-assembled, and then the entire pressure reducing valve is installed), in the use process of the pressure reducing valve with magnetic filtration and pollution discharge function, the water flow is input from the water inlet port 11 to the trapped outer cavity of the filtration part 2, and then filtered by the filtration part 2 and magnetically adsorbed by the magnetic adsorption part 4; the filtered water flow enters the output inner cavity, and then enters the pressure reducing part 3 through the communication cavity in the connection valve body 1 to be reduced in pressure, and then is discharged from the water outlet port 12, thereby completing the filtration and pressure reduction of the water flow, providing the water outlet port 12 with filtered water flow and pressure not greater than the limit of the pressure reducing part 3; after a period of use, the large-particle impurities filtered by the filtration part 2 and the ferromagnetic impurities magnetically adsorbed by the magnetic adsorption part 4 are all isolated in the trapped outer cavity, at this time, the pollution discharge part 5 can be opened, the water flow can be directly discharged from the trapped outer cavity to the pollution discharge part 5, thereby discharging the impurities and restoring the filtration capacity of the filtration part 2, thereby effectively continuously reducing and filtering the water flow and ensuring the safety of the water used at the rear end.

[0025] Embodiment two: Please refer to Figures 1-4 The difference from the above embodiment is that the connection valve body 1 is further provided with a detection port 15 at one end close to the water outlet port 12, and the detection port 15 can be connected with a detection instrument; and the connection valve body 1 is further provided with a backflushing port 16, which is in communication between one end inside the connection valve body 1 and the output inner cavity.

[0026] In use, the detection instrument can be connected with the detection port 15, which can be a pressure gauge, a water quality detection gauge or other instrument for detecting water quality and water pressure, and a plurality of detection instruments can be connected at one time; the backflushing port 16 is used to connect a backflushing assembly, which can use the same water path connected with the water inlet port 11 or other water path. The water inlet port 11 is connected and sealed with the water inlet three-way valve 6, the water inlet three-way valve 6 includes a backflushing interface 61, the backflushing interface 61 is in communication with the backflushing port 16 through a backflushing pressurizing pipe 62, and the backflushing pressurizing pipe 62 is provided with a booster pump 63 in series, so that the water pressure of the water flow input from the backflushing port 16 to the output inner cavity is greater than the maximum passing water pressure of the pressure reducing part 3 under the boosting output of the booster pump 63.

[0027] In the embodiment, the backflush assembly uses the same water path connected with the water inlet port 11, and the backflush assembly comprises a water inlet three-way valve 6, a backflush pressurizing pipe 62 and a booster pump 63. Specifically, the water inlet end of the water inlet three-way valve 6 is connected with the water path, one water outlet end of the water inlet three-way valve 6 is connected with the water inlet port 11 in a sealed manner, the other water outlet end of the water inlet three-way valve 6 is a backflush interface 61, the backflush interface 61 is connected with one end of the backflush pressurizing pipe 62 in a sealed manner, the booster pump 63 is connected in series on the backflush pressurizing pipe 62, and the other end of the backflush pressurizing pipe 62 is connected with the backflush port 16 in a sealed manner. In specific use, through the arrangement of the water inlet three-way valve 6, water is normally transported from the water inlet end of the water inlet three-way valve 6 to the water inlet port 11, and the water flow direction in the filter part 2 is from the outer cavity to the inner cavity. When backflush operation is needed, the blow-off part 5 is first opened, the valve core of the water inlet three-way valve 6 is rotated, water is transported from the water inlet end of the water inlet three-way valve 6 to the backflush interface 61, and the water is pressurized by the booster pump 63 and then flows into the inner cavity from the backflush port 16. At this time, the water flow direction in the filter part 2 is from the inner cavity to the outer cavity, and because the booster pump 63 is involved at this time, the water pressure input from the backflush port 16 to the inner cavity is greater than the maximum through water pressure of the pressure reduction part 3, so that the pressure reduction part 3 is closed, and the water flow direction is mainly from the outer cavity. (In specific use, a tail valve can be arranged at the water outlet port 12 to prevent backflush water from entering the subsequent water path), under the impact of the pressurized water flow, the impurities remaining in the outer cavity can be discharged from the blow-off part 5, thereby the filtering capacity of the filter part 2 can be restored through backflush action (in specific use, the cooperation of the subsequent silica gel scraping strip 222 rotating with the coarse filter sleeve 22 can produce scraping action on the inner wall of the filter connection shell 21 and the outer wall of the fine filter sleeve 23 at both ends, thereby cleaning the filter part 2), so as to ensure the stable progress of the subsequent filtering process.

[0028] Embodiment three: Please refer to Figure 1 , Figures 5-8 The difference from the above-mentioned embodiments is that the filter part 2 comprises, from the outside to the inside, a filter connection shell 21, a coarse filter sleeve 22, a fine filter sleeve 23 and a guide core barrel 24; the guide core barrel 24 is fixedly provided with a sealing bottom pad 25 at the bottom end, the sealing bottom pad 25 can seal the interval between the coarse filter sleeve 22 and the fine filter sleeve 23 at the bottom end; and the filtering precision of the coarse filter sleeve 22 is less than that of the fine filter sleeve 23.

[0029] The coarse filter sleeve 22 can rotate freely between the filter connecting shell 21 and the fine filter sleeve 23; the bottom end of the coarse filter sleeve 22 is a connecting prismatic sleeve 221, the connecting prismatic sleeve 221 is externally sleeved with a prismatic connecting sleeve 26, the bottom end of the filter connecting shell 21 and located externally of the prismatic connecting sleeve 26 is sleeved with a driving prismatic sleeve 27; the rotation of the driving prismatic sleeve 27 can drive the coarse filter sleeve 22 to rotate through the rotation of the prismatic connecting sleeve 26.

[0030] The magnetic adsorption part 4 comprises an adsorption mounting ring 41, the inside of the adsorption mounting ring 41 is provided with a plurality of adsorption magnets 42, the spacing between adjacent two adsorption magnets 42 is equal; the filter connecting shell 21 is externally provided with a plurality of supporting stoppers 211, the inner wall of the adsorption mounting ring 41 and located between adjacent two adsorption magnets 42 is provided with a plurality of sliding-out grooves 411, the cross-sectional area of the sliding-out groove 411 is greater than the cross-sectional area of the supporting stopper 211.

[0031] The fine filter sleeve 23 can isolate impurities outside the fine filter sleeve 23, each adsorption magnet 42 can adsorb magnetic impurities in the water flow on the inner wall of the filter connecting shell 21; the cylinder wall of the coarse filter sleeve 22 is embedded with a plurality of silica gel scraping strips 222, the two ends of the silica gel scraping strip 222 are respectively attached to the inner wall of the filter connecting shell 21 and the outer wall of the fine filter sleeve 23; the silica gel scraping strip 222 rotates with the coarse filter sleeve 22 to scrape the inner wall of the filter connecting shell 21 and the outer wall of the fine filter sleeve 23 respectively.

[0032] The pollution discharge part 5 comprises a pollution discharge ball valve 51 and a pollution discharge plug 52, the top end of the pollution discharge ball valve 51 is connected and sealed with the bottom of the filter part 2; the pollution discharge plug 52 is threadedly connected with the bottom end of the pollution discharge ball valve 51, the pollution discharge plug 52 is internally provided with a sealing washer 53; the pollution discharge plug 52 is further connected with the outer wall of the pollution discharge ball valve 51 through a flexible guide chain 54.

[0033] In specific use, the top end of the guide core barrel 24 is provided with a hollow connecting plate, the bottom end of the hollow connecting plate is rotatably connected with the top end of the coarse filter sleeve 22 and the fine filter sleeve 23 respectively, the hollow position of the hollow connecting plate is located at the outer side of the coarse filter sleeve 22, and the water flow input from the water inlet port 11 can pass through the hollow connecting plate to enter between the filter connecting shell 21 and the coarse filter sleeve 22; in the process of passing through the coarse filter sleeve 22 and the fine filter sleeve 23 in sequence to enter the guide core barrel 24 (separated by the fine filter sleeve 23 and the guide core barrel 24 between the outer cavity and the output inner cavity), the ferromagnetic impurities can be adsorbed on the inner wall of the filter connecting shell 21 under the action of each adsorption magnet 42 inside the adsorption installation ring 41 by passing through the outer side of the coarse filter sleeve 22, and the particulate impurities can be filtered by the coarse filter sleeve 22 and the fine filter sleeve 23 in sequence and blocked outside the coarse filter sleeve 22 and the fine filter sleeve 23 respectively, so as to filter the particulate impurities and the ferromagnetic impurities in the water flow. In specific use, the magnetic adsorption part 4 can be installed as needed, and the support block 211 is provided, and in the installation, the each sliding slot 411 of the adsorption installation ring 41 is aligned with each support block 211, then the adsorption installation ring 41 is slid to above the support block 211, after the each sliding slot 411 is misaligned with each support block 211 by rotating the adsorption installation ring 41, each support block 211 can support the magnetic adsorption part 4, and the installation of the magnetic adsorption part 4 is completed. After the filter part 2 filters for a period of time, first, the pollution blocking cap 52 is rotated to unseal between the bottom end of the pollution ball valve 51 (the sealing between the pollution blocking cap 52 and the pollution ball valve 51 is realized by the sealing of the sealing washer 53), at this time, the pollution blocking cap 52 is connected with the outer wall of the pollution ball valve 51 through the flexible guide chain 54 (which can be a rubber strip in specific use) to avoid the loss of the pollution blocking cap 52, and the pollution part 5 is opened, and the magnetic adsorption part 4 is taken off from the outer side of the filter part 2; then the external rotating drive prism cylinder 27 can be rotated to drive the coarse filter sleeve 22 to rotate through the transmission of the prism connecting cylinder 26, the silica gel scraping strip 222 rotates with the coarse filter sleeve 22 to scrape the inner wall of the filter connecting shell 21 and the outer wall of the fine filter sleeve 23 at both ends respectively, and then the impurities adhered to the inner wall of the filter connecting shell 21 and the outer wall of the fine filter sleeve 23 can be scraped and removed, and the impurities can pass through the connecting prism cylinder 221 with the water flow to enter the opened pollution ball valve 51, and then be discharged from the bottom end of the pollution ball valve 51 (in specific use, the backflush assembly of embodiment 2 can be used to better achieve the cleaning effect of the filter part 2), and then the filtering capacity of the filter part 2 can be effectively restored to ensure the stable progress of the subsequent filtering process.

[0034] Embodiment four: Please refer to Figure 1 , Figures 9-12The difference from the above-mentioned embodiments is that the pressure reducing part 3 comprises a pressure reducing valve core 31, a pressure reducing valve cover 32 and a pressure reducing spring 33, the pressure reducing valve cover 32 is connected and sealed between the pressure reducing port 14, the pressure reducing valve core 31 extends into the inside of the pressure reducing port 14; the pressure reducing valve core 31 comprises a fixed valve core 311 and an adjusting valve core 312, the fixed valve core 311 is arranged in clamping between the pressure reducing port 14, the adjusting valve core 312 is sleeved in the fixed valve core 311; the top end and the bottom end of the pressure reducing spring 33 are respectively provided with an adjusting top cover 34 and an isolation pad 35, the adjusting top cover 34 is connected between the pressure reducing valve cover 32 through an adjusting screw 36, the isolation pad 35 is connected between the adjusting valve core 312 through an isolation screw 37.

[0035] The rotation of the adjusting screw 36 can drive the adjusting top cover 34 to move the pressure reducing spring 33; a plurality of communication grooves are arranged on the outer wall of the fixed valve core 311, the water flow outside the fixed valve core 311 can pass through each communication groove to enter between the fixed valve core 311 and the adjusting valve core 312; a plurality of balance through holes are arranged on the bottom end of the fixed valve core 311 and penetrate to the top end of the fixed valve core 311, the water pressure at the bottom end of the fixed valve core 311 can be conducted to the bottom surface of the isolation pad 35 through each balance through hole.

[0036] In specific use, the rotation of the adjusting screw 36 drives the adjusting top cover 34 to move the pressure reducing spring 33, and adjusts the maximum activity distance of both ends of the pressure reducing spring 33 (the distance between the adjusting top cover 34 and the isolation pad 35, the isolation pad 35 can move within a certain elastic limit, the moving distance is small, and can be included in the limited water pressure range), and then in use, the water flow input from the filtering part 2 passes through each communication groove from the outside of the fixed valve core 311 to enter between the fixed valve core 311 and the adjusting valve core 312, and is discharged from the gap between the bottom end of the fixed valve core 311 and the bottom end of the adjusting valve core 312 to the water outlet port 12; When the water pressure in the water outlet port 12 deviates from the elastic limit of the pressure reducing spring 33 at this time, the water pressure at the bottom end of the fixed valve core 311 can be conducted to the bottom surface of the isolation pad 35 through each balance through hole by the conduction of the balance through hole, and then the isolation pad 35 can be pushed to move and drive the adjusting valve core 312 to move, and then the size of the gap between the bottom end of the fixed valve core 311 and the bottom end of the adjusting valve core 312 is adjusted, so that the water pressure at the bottom end of the fixed valve core 311 can be dynamically adjusted, the water pressure at the bottom end of the fixed valve core 311 and the elastic limit of the pressure reducing spring 33 are maintained in a relatively balanced state, and then the stability of the water pressure output from the pressure reducing part 3 is ensured, and then the pressure reducing effect is ensured.

[0037] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A pressure reducing valve with magnetic filtration and sewage discharge function, comprising a connecting valve body (1), characterized in that: The connecting valve body (1) includes an inlet port (11), an outlet port (12), a filter port (13), and a pressure reducing port (14). The filter port (13) is connected to and sealed with the filter section (2), and the pressure reducing port (14) is connected to and sealed with the pressure reducing section (3). The filter section (2) is externally fitted with a magnetic adsorption section (4), and a sewage discharge section (5) is provided at the end of the filter section (2) away from the filter port (13). The filter section (2) includes an outer interception cavity and an inner output cavity. Water flows into the outer interception cavity from the inlet port (11). After being filtered by the filter section (2) and magnetically adsorbed by the magnetic adsorption section (4), impurities are intercepted in the outer interception cavity. The filtered water flows into the pressure reducing section (3) after passing through the inner output cavity for pressure reduction, and finally is discharged from the outlet port (12). When the drain section (5) is open, the water flow intercepted in the outer cavity can carry impurities and be discharged directly from the drain section (5).

2. The pressure reducing valve with magnetic filtration and sewage discharge function according to claim 1, characterized in that: The connecting valve body (1) is also provided with a detection port (15) at one end near the water outlet port (12), and the detection port (15) can be connected to a detection instrument; A backflush port (16) is also provided on one side of the connecting valve body (1). The backflush port (16) is located inside the connecting valve body (1) and is connected to the output cavity.

3. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 2, characterized in that: The inlet port (11) is connected and sealed to the inlet three-way valve (6). The inlet three-way valve (6) includes a backflush port (61). The backflush port (61) and the backflush port (16) are connected by a backflush pressurization pipe (62). The backflush pressurization pipe (62) is connected in series with a booster pump (63). Under the booster output provided by the booster pump (63), the water pressure input from the backflush port (16) to the output cavity is greater than the maximum through water pressure of the pressure reducing section (3).

4. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 1, characterized in that: The filter section (2) includes, from the outside to the inside, a filter connection housing (21), a coarse filter sleeve (22), a fine filter sleeve (23), and a guide core (24). A sealing gasket (25) is fixedly provided at the bottom end of the guide core cylinder (24), and the sealing gasket (25) can seal the bottom end of the gap between the coarse filter sleeve (22) and the fine filter sleeve (23). The filtration accuracy of the coarse filter sleeve (22) is less than that of the fine filter sleeve (23).

5. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 4, characterized in that: The coarse filter sleeve (22) can rotate freely between the filter connection housing (21) and the fine filter sleeve (23); The bottom end of the coarse filter sleeve (22) is a connecting prismatic cylinder (221), and a prismatic connecting cylinder (26) is sleeved on the outside of the connecting prismatic cylinder (221). A driving prismatic cylinder (27) is sleeved on the bottom end of the filter connecting housing (21) and outside the prismatic connecting cylinder (26). The rotation of the driving prism cylinder (27) can drive the coarse filter sleeve (22) to rotate through the rotation of the prism connecting cylinder (26).

6. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 5, characterized in that: The magnetic adsorption part (4) includes an adsorption mounting ring (41), and a plurality of adsorption magnets (42) are disposed inside the adsorption mounting ring (41), with the spacing between two adjacent adsorption magnets (42) being equal. The filter connection housing (21) is provided with a number of support blocks (211) on the outside. The inner wall of the adsorption mounting ring (41) and between two adjacent adsorption magnets (42) are provided with a number of sliding grooves (411). The cross-sectional area of ​​the sliding grooves (411) is larger than the cross-sectional area of ​​the support blocks (211).

7. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 6, characterized in that: The fine filter sleeve (23) can isolate impurities on the outside of the fine filter sleeve (23), and each of the adsorption magnets (42) can adsorb magnetic impurities in the water flow onto the inner wall of the filter connection housing (21). The coarse filter sleeve (22) has several silicone scraper strips (222) embedded in its cylinder wall. The two ends of the silicone scraper strips (222) are respectively attached to the inner wall of the filter connection housing (21) and the outer wall of the fine filter sleeve (23). The silicone scraper (222) can scrape the inner wall of the filter connecting housing (21) and the outer wall of the fine filter sleeve (23) at both ends respectively as the coarse filter sleeve (22) rotates.

8. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 1, characterized in that: The sewage discharge section (5) includes a sewage discharge ball valve (51) and a sewage discharge plug (52). The top of the sewage discharge ball valve (51) is connected to and sealed to the bottom of the filter section (2). The drain plug (52) is threadedly connected to the bottom end of the drain ball valve (51), and a sealing gasket (53) is provided inside the drain plug (52). The drain plug (52) is also connected to the outer wall of the drain ball valve (51) via a flexible guide chain (54).

9. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 1, characterized in that: The pressure reducing part (3) includes a pressure reducing valve core (31), a pressure reducing valve cover (32) and a pressure reducing spring (33). The pressure reducing valve cover (32) is connected to and sealed with the pressure reducing port (14). The pressure reducing valve core (31) extends into the interior of the pressure reducing port (14). The pressure reducing valve core (31) includes a fixed valve core (311) and an adjusting valve core (312). The fixed valve core (311) is snapped into the pressure reducing port (14), and the adjusting valve core (312) is sleeved inside the fixed valve core (311). The pressure-reducing spring (33) is provided with an adjusting top cover (34) and an isolation pad (35) at its top and bottom ends, respectively. The adjusting top cover (34) is connected to the pressure-reducing valve cover (32) by an adjusting screw (36), and the isolation pad (35) is connected to the adjusting valve core (312) by an isolation screw (37).

10. A pressure reducing valve with magnetic filtration and sewage discharge function according to claim 9, characterized in that: The rotation of the adjusting screw (36) can drive the adjusting top cover (34) to move the pressure relief spring (33); The outer wall of the fixed valve core (311) is provided with several connecting grooves, and the water flow outside the fixed valve core (311) can pass through each connecting groove and enter between the fixed valve core (311) and the regulating valve core (312); The fixed valve core (311) has several balanced through holes at its bottom end that extend to the top end of the fixed valve core (311). The water pressure at the bottom end of the fixed valve core (311) can be transmitted to the bottom surface of the isolation pad (35) through each balanced through hole.

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