CN117225045A - On-line self-cleaning anti-drainage filter - Google Patents

Abstract

The invention discloses an online self-cleaning anti-drainage filter, which comprises a valve body, a valve cover and a flow guide cavity, and is characterized by further comprising a filter screen cylinder, a hydrodynamic filter screen cylinder dirt scraping device and a switch valve, wherein the filter screen cylinder is arranged between the valve body and a water inlet channel of a water inlet connecting pipe, a drain outlet is arranged at the lower end of the water inlet channel, the drain outlet extends downwards and is connected with the switch valve, a water inlet at the upper end of the filter screen cylinder is communicated with the water inlet connecting pipe, the lower end of the filter screen cylinder is fixedly connected with a lower positioning seat fixed at the upper end of the drain outlet, a water outlet at the side wall of the filter screen cylinder is communicated with the flow guide cavity, and the filter screen cylinder is internally provided with the hydrodynamic filter screen cylinder dirt scraping device.

Description

On-line self-cleaning anti-drainage filter

Technical Field

The invention relates to the technical field of heating equipment, in particular to an online self-cleaning anti-draining filter.

Background

As is well known, in the conventional heating pipeline, in the long-term heating process, dirt such as scale and rust impurities of the pipeline can be generated in the pipeline, and if the pipeline is not cleaned for a long time, the dirt is accumulated in the pipeline and flows into a heating facility in a user room along with hot water, so that the phenomenon that the heat of domestic heating is insufficient, the room temperature is not up to standard and the like occurs, meanwhile, in order to prevent the leakage of the heating water of a user and damage property of the user, a water-leakage preventing valve is usually arranged on the water inlet pipeline 41, so that a heat supply enterprise usually installs a y-type filtering valve and an a-type water-leakage preventing valve on the inlet pipeline of each user, and the substantial shortages of the structure are that: 1. for long-time heat supply, dirt such as impurities in the pipeline can block the filter screen cylinder, so that the system resistance is increased, and even the crisp hot water cannot enter a user room. When the filter is cleaned, the valves at the two ends of the user control unit are usually closed manually, then the sealing cover at the bottom of the filter is opened, the filter screen cylinder is taken out for cleaning, and then the cleaned filter screen cylinder is filled and covered with the sealing cover. The cleaning method not only causes waste due to water flowing out of the heating pipeline, but also causes operators to clean the filter on the water inlet pipeline 41 of the user irregularly in the heating period, and most of heating administrators can throw away the filter screen after drinking and quenching, so that the quick-heating and short-time thermal comfort level is met. 2. The y-type filter is usually provided with a filter screen cylinder obliquely mounted on the water inlet pipeline 41, and when water passes through the filter, the resistance is large and the cleaning is difficult. When the water passes through the A-type anti-drain valve, the resistance is increased once again, so that the resistance of the whole system is increased, and the electric power is wasted. 3. The equipment investment is large, the leakage points are more, and the accident potential is more.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide the online self-cleaning anti-leakage filter which has the advantages of compact structure, low equipment investment cost, no maintenance, no disassembly cleaning, few leakage points and convenient installation.

The technical scheme adopted for solving the technical problems is as follows:

the on-line self-cleaning anti-leakage filter comprises a valve body 1, a valve cover 4 and a flow guide cavity 5, wherein a water inlet connecting pipe 2 is arranged at the left end of the valve body 1, a water outlet connecting pipe 3 is arranged at the right end of the valve body, the upper end of the valve body 1 is fixedly connected with the valve cover 4, a valve core cavity 8 is arranged between the valve cover 4 and the flow guide cavity 5, and a valve core cavity 8 is provided with an anti-leakage device, the on-line self-cleaning anti-leakage filter is characterized by also comprising a filter screen cylinder, a hydrodynamic filter screen cylinder dirt scraping device and a switch valve, a filter screen cylinder 39 is arranged between the valve body and a water inlet channel of the water inlet connecting pipe 2, a drain outlet is arranged at the lower end of the water inlet channel, the drain outlet extends downwards and is connected with the switch valve, a water inlet at the upper end of the filter screen cylinder 39 is fixedly connected with the water inlet connecting pipe 2, and a lower positioning seat 51 fixed at the upper end of the drain outlet, the water outlet of the side wall of the filter screen cylinder 39 is communicated with the diversion cavity 5, a hydrodynamic filter screen cylinder dirt scraping device is arranged in the filter screen cylinder 39, the hydrodynamic filter screen cylinder dirt scraping device comprises a scraping part, an upper connecting part 48 and/or a lower connecting part, the side wall of the scraping part is provided with a scraping blade 61, the scraping part is axially arranged along the filter screen cylinder, the scraping blade 61 is in linear rotatable contact with the inner wall of the filter screen cylinder through the impact of water flow, the upper end of the scraping part is hinged with an upper positioning seat at the upper end of a water inlet channel through the upper connecting part 48 which is rotatably connected, and/or the lower end of the scraping part is hinged with a lower positioning seat through the lower connecting part which is rotatably connected, so that the scraping blade 61 is driven by rotation generated under the impact of water flow through the scraping part to automatically remove the impurities attached to the inner wall of the filter screen cylinder after filtration, the filter screen cylinder is prevented from being blocked by dirt to influence heat supply after long-term filtration, the effects of maintenance-free and disassembly-free cleaning are achieved, the pipeline resistance is reduced, the installation times and the cleaning times are reduced, the energy is saved, and the heat supply efficiency is improved.

According to the invention, the sensor mounting hole is formed in the valve body and is communicated with the inner cavity of the valve body, the water inlet temperature and pressure sensor is arranged in the sensor mounting hole and is connected with the control unit, so that the effects of high integration level and convenience in installation are achieved, the temperature and pressure sensor is used for collecting the pressure and the water inlet temperature in the valve body, the information is uploaded to the control unit, and the control unit is used for judging whether the indoor pipeline of a user leaks according to the collected pressure and temperature information, so that the online leakage prevention effect is realized.

The switch valve can adopt an electromagnetic switch valve or an electric switch valve, so that the switch valve is controlled by the control unit to automatically remove impurities at the bottom of the filter screen cylinder 39, and the effect of automatically discharging the impurities on line is achieved.

The scraping part of the invention can comprise at least one scraper blade, wherein the end surface of the scraper blade forms an included angle with the impact direction of water flow, and the side surface of the scraper blade is provided with a scraping edge 61;

when the number of the scrapers is more than two, the upper ends of the more than two scrapers are fixedly connected through an upper connecting ring, and/or the lower ends of the more than two scrapers are fixedly connected through a lower connecting ring, the upper ends of the upper connecting rings are provided with upper connecting parts 48 which are rotatably connected, and/or the lower ends of the lower connecting rings are provided with lower connecting parts which are rotatably connected, so that the scraping rate of the inner wall of the filter screen cylinder is further improved.

The scraping part of the present invention may be a self-rotating water wheel, the blades of the self-rotating water wheel 45 are axially arranged, the end surfaces of the blades intersect with the impact direction of the water flow, and the side walls of the blades of the self-rotating water wheel are provided with scraping blades 61.

The scraping part of the invention can also consist of a rotation water wheel 45 and scraping plates 46, wherein at least 1 scraping plate 46 is arranged at the upper end of the rotation water wheel 45, the scraping plates are axially arranged along the extending line of the axis of the rotation water wheel, one side wall or two side walls of each scraping plate are provided with scraping edges 61 for scraping the inner wall of the filter screen cylinder, the scraping plates are fixed on the end face of the rotation water wheel 45, the lower end of the rotation water wheel is provided with a lower connecting part which is rotatably connected, and the upper end of each scraping plate is provided with an upper connecting part 48 which is rotatably connected, so that dirt on the inner wall of the filter screen cylinder can be scraped by the scraping edges 61 on the scraping plates driven by the rotation water wheel under the impact of water flow.

The surface shape of the scraping plate is gradually distorted from the lower end to the upper end, the distortion direction of the scraping plate is the same as the rotation direction of the self-rotation water wheel blades, so that the angle between the end face of the hanging plate and water flow is increased, the rotation speed of the self-rotation water wheel is increased through the water flow impact scraping plate and the self-rotation water wheel, and the scraping rate of the inner wall of the filter screen cylinder is further improved;

the scraping blade 61 of the present invention may be made of a non-metal material with high wear resistance, corrosion resistance and elasticity, and the non-metal material may be made of a rubber material, a plastic material or a composite material.

The scraping blade 61 of the present invention may use bristles to facilitate the automatic removal of dirt intercepted by the inner wall of the filter cartridge 39.

The switch valve can adopt an electromagnetic switch valve or an electric switch valve, so that the switch valve is controlled by the control unit to automatically remove impurities at the bottom of the filter screen cylinder 39, and the effect of automatically discharging the impurities on line is achieved.

The valve core stroke fine adjustment device can be arranged between the valve cover 4 and the rectifying sleeve 7 and comprises a screw rod 9 and a guide sleeve 16, wherein the guide sleeve 16 is sleeved outside the rectifying sleeve, the periphery of the lower part of the guide sleeve 16 is fixedly connected with the inner wall of the anti-leakage cavity in a sealing way through an outer limit flange 19 arranged on the periphery of the lower part of the guide sleeve 16, the inner hole of the lower part is a multi-surface cylindrical inner hole 25 and is matched with an outer multi-surface cylindrical body arranged on the outer wall of the rectifying sleeve to realize axial sliding connection, and the inner hole of the upper part is in sealing connection with a driving shaft 26 so as to facilitate sealing the upper end of the rectifying sleeve through the guide sleeve 16 again; the screw rod 9 is in threaded connection with the rectifying sleeve, the lower end of the screw rod 9 is fixedly connected with the valve rod 10, the upper end of the screw rod 9 is fixedly connected with the driving shaft 26, when the position of the rectifying sleeve is to be adjusted, the driving shaft 26 is connected with the driving shaft 26 through a power source, the driving shaft 26 drives the screw rod 9 to rotate, and the rectifying sleeve on the screw rod axially displaces under the action of the outer multi-surface cylinder, so that the effect of rapidly adjusting the position of the rectifying sleeve is achieved.

The anti-leakage device comprises a rectifying sleeve 7, a driving shaft and a supporting plate 11, wherein the rectifying sleeve 7 is positioned in an anti-leakage cavity in the center of a water inlet connecting pipe 2 and a water outlet connecting pipe 3, the axis of the rectifying sleeve 7 is vertical to the axes of the water inlet connecting pipe and the water outlet connecting pipe of a valve body 1, the upper part of the inner cavity of the rectifying sleeve 7 is provided with a connecting hole section, the lower part is provided with a water inlet section, one side of the rectifying sleeve 7 is provided with a water outlet through hole 12 for discharging water in the water inlet section of the rectifying sleeve to a water outlet, the outer wall of the upper end of the rectifying sleeve 7 is in sealing connection with the inner wall of the anti-leakage cavity, the outer wall of the lower part is in sealing connection with the side wall of the lower part of the water outlet connecting pipe through the supporting plate 11, the supporting plate can be fixedly connected with the rectifying sleeve or can also be fixedly connected with the side wall of the water outlet connecting pipe, when the upper end of the supporting plate 11 is fixedly connected with the rectifying sleeve, so as to be favorable for sealing and isolating the diversion cavity 5 from a water outlet connecting pipe through a supporting plate, the valve rod 10 passes through the rectification cavity and the valve core cavity 8, the upper end is fixedly connected with the driving shaft 26, the lower end passes through a water inlet at the bottom surface of the valve core cavity 8 and is hinged with a valve rod jack arranged on the bottom surface of the diversion cavity, the valve rod is slidingly connected with the valve core 6 in series, the driving shaft 26 is in sealing connection with the rectification sleeve, the upper end extends upwards into the valve cover cavity so as to be favorable for rotating the driving shaft through a power source, the lower part of the diversion cavity 5 is communicated with one side of the filtering cavity 38, the baffle 15 is positioned between the water inlet connecting pipe and the rectification sleeve cavity, the periphery of the baffle is fixedly connected with the inner cavity of the valve body in a sealing manner so as to be favorable for guiding water in the water inlet connecting pipe into the filtering device, the diversion cavity 5 is communicated with the valve core cavity 8 through the water inlet of the valve core cavity 8, the valve core 6 is positioned in the valve core cavity 8, the periphery of the lower part of the valve core 6 is in sealing connection with the inner wall of the lower end of the valve core cavity 8, the upper end covering end face is larger than the area of the water inlet section of the rectifying sleeve, so that the anti-leakage effect is achieved, when water leaks in a heat supply user room, the water flow rate is increased, the water pushes the valve core 6 to move upwards along the axial direction of the valve rod, the lower port of the water inlet section of the rectifying sleeve is quickly plugged, and other property losses caused by water leakage in the user room are avoided.

The anti-leakage valve can be characterized in that an upper limit inner boss 17 and a lower limit inner boss 18 are axially arranged on the inner wall of an anti-leakage cavity in the valve body 1, the upper limit inner boss 17 is positioned above the lower limit inner boss 18, the outer limit flange is positioned between the upper limit inner boss and the lower limit inner boss, the upward movement of the outer limit flange is limited through the upper limit inner boss, and the downward movement of the outer limit flange is limited through the lower limit inner boss.

The lower part of the valve core 6 can be a conical body, a hemispherical body or a cylindrical body, so that the blocking effect on the water inlet of the rectifying sleeve is facilitated.

The valve core stroke fine adjustment device further comprises an anti-rotation pin, the circumferential array at the lower end of the guide sleeve 16 is provided with the anti-rotation pin, the anti-rotation pin is axially and downwardly extended, the inner wall of the lower limit inner boss is provided with an anti-rotation pin limit groove, and the guide sleeve is hinged and positioned in the valve body through the anti-rotation pin and the limit groove 22 so as to limit the circumferential rotation of the guide sleeve 16, thereby achieving the effects of convenient disassembly and sealing positioning.

The invention can also be sleeved with a screw 9 locking device on the driving shaft between the guide sleeve 16 and the valve cover 4, the screw 9 locking device comprises a return spring 21, a lock sleeve and a limiting small shaft sleeve, a lockable straight tooth inner hole and a lock sleeve guide hole are sequentially arranged in the inner hole of the valve cover from top to bottom, a coaxial straight gear 33 is fixedly arranged at the upper end of the driving shaft 26, the lock sleeve, the return spring 21 and the limiting small shaft sleeve are sequentially sleeved on the driving shaft 26 from top to bottom, the lower end of the limiting small shaft sleeve is fixedly connected with the guide sleeve 16, the inner hole of the limiting small shaft sleeve is in sealing connection with the driving shaft 26 through a sealing ring, the lower end of the return spring 21 is sleeved on the upper end face of the limiting small shaft sleeve and is in contact with the upper end face of the guide sleeve 16, the upper end of the spring positioning hole of the lock sleeve 27 is in contact with the upper top face of the spring positioning hole of the lock sleeve, the structure of the lock sleeve is identical to the prior art, the lock sleeve is not repeated, when the lock sleeve is locked, under the tension of the return spring 21, the lock sleeve is in contact with the upper face of the lock sleeve guide hole of the valve cover from top to bottom, the top face of the lock sleeve is in contact with the upper face of the vertical direction, the upper face of the lock sleeve guide hole of the lock sleeve, the lower face of the cylinder is in contact with the inner tooth of the inner tooth 26, the upper face of the inner tooth of the driving shaft is or the cylinder, the upper face of the inner tooth of the lock sleeve is meshed with the inner hole of the inner tooth 26 in the cylinder, or the upper face of the inner hole is not in contact with the upper face of the lock sleeve, and the upper face of the lock sleeve is in contact with the upper face of the inner tooth of the lock sleeve; when the stroke of the valve core 6 is to be regulated, the lock sleeve is pressed down in a state that the return spring 21 is compressed, when the outer gear ring section at the periphery of the lock sleeve is separated from the straight-tooth inner hole of the valve cover, the locking is released, the inner gear hole of the inner hole of the lock sleeve moves down along the straight gear 33, namely the upper end part of the driving shaft 26 is exposed, then the driving shaft 26 drives the screw 9 to rotate through the rotation of the power source, the rectifying sleeve moves up or down under the guiding action of the guiding sleeve 16, the effect of regulating the stroke of the valve core 6 can be achieved, after the regulation is finished, the power source is released, the lock sleeve is reset under the tension action of the return spring 21, at the moment, the outer gear ring section at the periphery of the lock sleeve is meshed with the straight gear inner hole of the valve cover again, the inner gear hole of the lock sleeve is meshed with the straight gear 33 at the upper part of the driving shaft 26 again, and the locking effect is realized.

According to the invention, the middle part of the valve rod 10 can be provided with the limiting shaft shoulder 37, when water supply is regulated in the water supply process, the rectifying sleeve is driven to move upwards along the guide sleeve by rotating the screw rod 9, so that the lower end surface of the limiting shaft shoulder extends out of the lower end of the water inlet section of the rectifying sleeve, and the smooth water flow is ensured, so that the effect of conveniently regulating the water supply is achieved; when the adjustment is finished, the screw rod 9 is reversely rotated, the rectifying sleeve moves downwards along the guide sleeve, the lower end face of the limiting shaft shoulder is higher than the lower end face of the axial flow sleeve, so that when the heating air leaks, the valve core 6 moves upwards through the valve rod 10 to block the water inlet section of the rectifying sleeve, and the effect of preventing leakage is achieved.

The power source can be driven electrically or manually, and when the power source is rotated manually, the power source consists of a plug handle and a rotating handle, one end of the plug handle is fixedly connected with the rotating handle, the center of the end face of the other end is axially provided with a plug hole, and when the power source is used, the plug hole is meshed with the spur gear 33 of the driving shaft 26, and the depth of the plug hole is larger than that of the spur gear inner hole of the valve cover, so that the stroke of the valve core 6 can be regulated rapidly by a special key.

The invention can be provided with the key positioning groove at the upper end of the lock sleeve, and the diameter of the key positioning groove is matched with the outer diameter of the plug handle so as to achieve the effect of further rapid adjustment.

The invention can also be provided with a dial plate on the upper end face of the valve cover, the dial plate is provided with a scale concave line, an opening mark concave line and a closing mark concave line, one side of the upper end face of the lock sleeve is provided with a finger groove for accurately indicating and positioning, and the stroke of the valve core 6 can be rapidly known through the numerical value of the scale concave line corresponding to the finger groove.

By adopting the structure, the double-u-shaped structure of the filter and the anti-drain valve is skillfully combined into the single-u-shaped structure, so that the fluid resistance is reduced by 60%, the dirt cleaning is convenient, and the anti-drain performance is more stable. The device has the advantages of compact structure, energy saving (water, electricity and heat), self-balancing, field debugging-free, field maintenance-free, convenient installation and the like.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of an embodiment of the hydrodynamic filter cartridge dirt scraper device of fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic view of a construction of a second embodiment of the hydro-dynamic filter cartridge dirt scraping apparatus of fig. 1.

Fig. 5 is a schematic structural view of an embodiment of the present invention.

Reference numerals: the valve comprises a valve body 1, a water inlet connecting pipe 2, a water outlet connecting pipe 3, a valve cover 4, a guide cavity 5, a valve core 6, a rectifying sleeve 7, a valve core cavity 8, a screw 9, a valve rod 10, a supporting plate 11, a partition plate 15, a guide sleeve 16, an outer limit flange 19, a reset spring 21, an anti-rotation pin 24, a multi-surface cylindrical inner hole 25, a driving shaft 26, a spur gear 33, a limit shaft shoulder 37, a filter cavity 38, a filter screen cylinder 39, a water return pipeline 42, a connecting pipeline 43, a self-rotation water wheel 45, a unit scraping plate 46, an upper connecting ring 47, an upper connecting part 48, a lower connecting part 49, an upper positioning seat 50, a lower positioning seat 51 and a scraping blade 61.

Detailed Description

The invention is described below with reference to the drawings and examples.

As shown in the drawing, an on-line self-cleaning anti-leakage filter comprises a valve body 1, a valve cover 4 and a diversion cavity 5, wherein a water inlet connecting pipe 2 is arranged at the left end of the valve body 1, a water outlet connecting pipe 3 is arranged at the right end of the valve body, the upper end of the valve body 1 is fixedly connected with the valve cover 4, a valve core cavity 8 is arranged between the valve cover 4 and the diversion cavity 5 and is connected with the diversion cavity at the lower end, and the valve core cavity 8 is provided with an anti-leakage device, and is characterized by further comprising a filter screen cylinder, a hydrodynamic filter screen cylinder dirt scraping device and a switch valve, a filter screen cylinder 39 is arranged between the valve body and a water inlet channel of the water inlet connecting pipe 2, a drain outlet is arranged at the lower end of the water inlet channel, the drain outlet extends downwards and is connected with the switch valve, a water inlet at the upper end of the filter screen cylinder 39 is connected with the water inlet connecting pipe 2, and the lower positioning seat 51 fixed at the upper end of the drain outlet, the water outlet of the side wall of the filter screen cylinder 39 is communicated with the diversion cavity 5, a hydrodynamic filter screen cylinder dirt scraping device is arranged in the filter screen cylinder 39, the hydrodynamic filter screen cylinder dirt scraping device comprises a scraping part, an upper connecting part 48 and/or a lower connecting part, the side wall of the scraping part is provided with a scraping blade 61, the scraping part is axially arranged along the filter screen cylinder, the scraping blade 61 is in linear rotatable contact with the inner wall of the filter screen cylinder through the impact of water flow, the upper end of the scraping part is hinged with an upper positioning seat at the upper end of a water inlet channel through the upper connecting part 48 which is rotatably connected, and/or the lower end of the scraping part is hinged with a lower positioning seat through the lower connecting part which is rotatably connected, so that the scraping blade 61 is driven by rotation generated under the impact of water flow through the scraping part to automatically remove the impurities attached to the inner wall of the filter screen cylinder after filtration, the filter screen cylinder is prevented from being blocked by dirt to influence heat supply after long-term filtration, the effects of maintenance-free and disassembly-free cleaning are achieved, the pipeline resistance is reduced, the installation times and the cleaning times are reduced, the energy is saved, and the heat supply efficiency is improved.

According to the invention, the sensor mounting hole is formed in the valve body and is communicated with the inner cavity of the valve body, the water inlet temperature and pressure sensor is arranged in the sensor mounting hole and is connected with the control unit, so that the effects of high integration level and convenience in installation are achieved, the temperature and pressure sensor is used for collecting the pressure and the water inlet temperature in the valve body, the information is uploaded to the control unit, and the control unit is used for judging whether the indoor pipeline of a user leaks according to the collected pressure and temperature information, so that the online leakage prevention effect is realized.

The switch valve can adopt an electromagnetic switch valve or an electric switch valve, so that the switch valve is controlled by the control unit to automatically remove impurities at the bottom of the filter screen cylinder 39, and the effect of automatically discharging the impurities on line is achieved.

The scraping part of the invention can comprise at least one scraper blade, wherein the end surface of the scraper blade forms an included angle with the impact direction of water flow, and the side surface of the scraper blade is provided with a scraping edge 61;

when the number of the scrapers is more than two, the upper ends of the more than two scrapers are fixedly connected through an upper connecting ring, and/or the lower ends of the more than two scrapers are fixedly connected through a lower connecting ring, the upper ends of the upper connecting rings are hinged with an upper positioning seat through an upper connecting part 48 which is provided with rotatable connection, and/or the lower ends of the lower connecting rings are hinged with a lower positioning seat through a lower connecting part which is provided with rotatable connection, so that the scraping rate of the inner wall of the filter screen cylinder is further improved.

The scraping part of the present invention may be a self-rotating water wheel, the blades of the self-rotating water wheel 45 are axially arranged, the end surfaces of the blades intersect with the impact direction of the water flow, and the side walls of the blades of the self-rotating water wheel are provided with scraping blades 61.

The scraping part of the invention can also consist of a rotation water wheel 45 and scraping plates 46, wherein at least 1 scraping plate 46 is arranged at the upper end of the rotation water wheel 45, the scraping plates are axially arranged along the extending line of the axis of the rotation water wheel, one side wall or two side walls of each scraping plate are provided with scraping edges 61 for scraping the inner wall of the filter screen cylinder, the scraping plates are fixed on the end face of the rotation water wheel 45, the lower end of the rotation water wheel is hinged with a lower positioning seat through a rotatably connected lower connecting part, and the upper end of each scraping plate is hinged with an upper positioning seat through a rotatably connected upper connecting part 48, so that dirt on the inner wall of the filter screen cylinder can be scraped by the scraping edges 61 on the scraping plates driven by the rotation of the rotation water wheel under the impact of water flow.

The surface shape of the scraping plate is gradually distorted from the lower end to the upper end, the distortion direction of the scraping plate is the same as the rotation direction of the self-rotation water wheel blades, so that the angle between the end face of the hanging plate and water flow is increased, the rotation speed of the self-rotation water wheel is increased through the water flow impact scraping plate and the self-rotation water wheel, and the scraping rate of the inner wall of the filter screen cylinder is further improved;

the scraping blade 61 of the present invention may be made of a non-metal material with high wear resistance, corrosion resistance and elasticity, and the non-metal material may be made of a rubber material, a plastic material or a composite material.

The scraping blade 61 of the present invention may use bristles to facilitate the automatic removal of dirt intercepted by the inner wall of the filter cartridge 39.

The switch valve can adopt an electromagnetic switch valve or an electric switch valve, so that the switch valve is controlled by the control unit to automatically remove impurities at the bottom of the filter screen cylinder 39, and the effect of automatically discharging the impurities on line is achieved.

The valve core stroke fine adjustment device can be arranged between the valve cover 4 and the rectifying sleeve 7 and comprises a screw rod 9 and a guide sleeve 16, wherein the guide sleeve 16 is sleeved outside the rectifying sleeve, the periphery of the lower part of the guide sleeve 16 is fixedly connected with the inner wall of the anti-leakage cavity in a sealing way through an outer limit flange 19 arranged on the periphery of the lower part of the guide sleeve 16, the inner hole of the lower part is a multi-surface cylindrical inner hole 25 and is matched with an outer multi-surface cylindrical body arranged on the outer wall of the rectifying sleeve to realize axial sliding connection, and the inner hole of the upper part is in sealing connection with a driving shaft 26 so as to facilitate sealing the upper end of the rectifying sleeve through the guide sleeve 16 again; the screw rod 9 is in threaded connection with the rectifying sleeve, the lower end of the screw rod 9 is fixedly connected with the valve rod 10, the upper end of the screw rod 9 is fixedly connected with the driving shaft 26, when the position of the rectifying sleeve is to be adjusted, the driving shaft 26 is connected with the driving shaft 26 through a power source, the driving shaft 26 drives the screw rod 9 to rotate, and the rectifying sleeve on the screw rod axially displaces under the action of the outer multi-surface cylinder, so that the effect of rapidly adjusting the position of the rectifying sleeve is achieved.

The anti-leakage device comprises a rectifying sleeve 7, a driving shaft and a supporting plate 11, wherein the rectifying sleeve 7 is positioned in an anti-leakage cavity in the center of a water inlet connecting pipe 2 and a water outlet connecting pipe 3, the axis of the rectifying sleeve 7 is vertical to the axes of the water inlet connecting pipe and the water outlet connecting pipe of a valve body 1, the upper part of the inner cavity of the rectifying sleeve 7 is provided with a connecting hole section, the lower part is provided with a water inlet section, one side of the rectifying sleeve 7 is provided with a water outlet through hole 12 for discharging water in the water inlet section of the rectifying sleeve to a water outlet, the outer wall of the upper end of the rectifying sleeve 7 is in sealing connection with the inner wall of the anti-leakage cavity, the outer wall of the lower part is in sealing connection with the side wall of the lower part of the water outlet connecting pipe through the supporting plate 11, the supporting plate can be fixedly connected with the rectifying sleeve or can also be fixedly connected with the side wall of the water outlet connecting pipe, when the upper end of the supporting plate 11 is fixedly connected with the rectifying sleeve, so as to be favorable for sealing and isolating the diversion cavity 5 from a water outlet connecting pipe through a supporting plate, the valve rod 10 passes through the rectification cavity and the valve core cavity 8, the upper end is fixedly connected with the driving shaft 26, the lower end passes through a water inlet at the bottom surface of the valve core cavity 8 and is hinged with a valve rod jack arranged on the bottom surface of the diversion cavity, the valve rod is slidingly connected with the valve core 6 in series, the driving shaft 26 is in sealing connection with the rectification sleeve, the upper end extends upwards into the valve cover cavity so as to be favorable for rotating the driving shaft through a power source, the lower part of the diversion cavity 5 is communicated with one side of the filtering cavity 38, the baffle 15 is positioned between the water inlet connecting pipe and the rectification sleeve cavity, the periphery of the baffle is fixedly connected with the inner cavity of the valve body in a sealing manner so as to be favorable for guiding water in the water inlet connecting pipe into the filtering device, the diversion cavity 5 is communicated with the valve core cavity 8 through the water inlet of the valve core cavity 8, the valve core 6 is positioned in the valve core cavity 8, the periphery of the lower part of the valve core 6 is in sealing connection with the inner wall of the lower end of the valve core cavity 8, the upper end covering end face is larger than the area of the water inlet section of the rectifying sleeve, so that the anti-leakage effect is achieved, when water leaks in a heat supply user room, the water flow rate is increased, the water pushes the valve core 6 to move upwards along the axial direction of the valve rod, the lower port of the water inlet section of the rectifying sleeve is quickly plugged, and other property losses caused by water leakage in the user room are avoided.

The anti-leakage valve can be characterized in that an upper limit inner boss 17 and a lower limit inner boss 18 are axially arranged on the inner wall of an anti-leakage cavity in the valve body 1, the upper limit inner boss 17 is positioned above the lower limit inner boss 18, the outer limit flange is positioned between the upper limit inner boss and the lower limit inner boss, the upward movement of the outer limit flange is limited through the upper limit inner boss, and the downward movement of the outer limit flange is limited through the lower limit inner boss.

The lower part of the valve core 6 can be a conical body, a hemispherical body or a cylindrical body, so that the blocking effect on the water inlet of the rectifying sleeve is facilitated.

The valve core stroke fine adjustment device further comprises an anti-rotation pin, the circumferential array at the lower end of the guide sleeve 16 is provided with the anti-rotation pin, the anti-rotation pin is axially and downwardly extended, the inner wall of the lower limit inner boss is provided with an anti-rotation pin limit groove, and the guide sleeve is hinged and positioned in the valve body through the anti-rotation pin and the limit groove 22 so as to limit the circumferential rotation of the guide sleeve 16, thereby achieving the effects of convenient disassembly and sealing positioning.

The invention can also be sleeved with a screw 9 locking device on the driving shaft between the guide sleeve 16 and the valve cover 4, the screw 9 locking device comprises a return spring 21, a lock sleeve and a limiting small shaft sleeve, a lockable straight tooth inner hole and a lock sleeve guide hole are sequentially arranged in the inner hole of the valve cover from top to bottom, a coaxial straight gear 33 is fixedly arranged at the upper end of the driving shaft 26, the lock sleeve, the return spring 21 and the limiting small shaft sleeve are sequentially sleeved on the driving shaft 26 from top to bottom, the lower end of the limiting small shaft sleeve is fixedly connected with the guide sleeve 16, the inner hole of the limiting small shaft sleeve is in sealing connection with the driving shaft 26 through a sealing ring, the lower end of the return spring 21 is sleeved on the upper end face of the limiting small shaft sleeve and is in contact with the upper end face of the guide sleeve 16, the upper end of the spring positioning hole of the lock sleeve 27 is in contact with the upper top face of the spring positioning hole of the lock sleeve, the structure of the lock sleeve is identical to the prior art, the lock sleeve is not repeated, when the lock sleeve is locked, under the tension of the return spring 21, the lock sleeve is in contact with the upper face of the lock sleeve guide hole of the valve cover from top to bottom, the top face of the lock sleeve is in contact with the upper face of the vertical direction, the upper face of the lock sleeve guide hole of the lock sleeve, the lower face of the cylinder is in contact with the inner tooth of the inner tooth 26, the upper face of the inner tooth of the driving shaft is or the cylinder, the upper face of the inner tooth of the lock sleeve is meshed with the inner hole of the inner tooth 26 in the cylinder, or the upper face of the inner hole is not in contact with the upper face of the lock sleeve, and the upper face of the lock sleeve is in contact with the upper face of the inner tooth of the lock sleeve; when the stroke of the valve core 6 is to be regulated, the lock sleeve is pressed down in a state that the return spring 21 is compressed, when the outer gear ring section at the periphery of the lock sleeve is separated from the straight-tooth inner hole of the valve cover, the locking is released, the inner gear hole of the inner hole of the lock sleeve moves down along the straight gear 33, namely the upper end part of the driving shaft 26 is exposed, then the driving shaft 26 drives the screw 9 to rotate through the rotation of the power source, the rectifying sleeve moves up or down under the guiding action of the guiding sleeve 16, the effect of regulating the stroke of the valve core 6 can be achieved, after the regulation is finished, the power source is released, the lock sleeve is reset under the tension action of the return spring 21, at the moment, the outer gear ring section at the periphery of the lock sleeve is meshed with the straight gear inner hole of the valve cover again, the inner gear hole of the lock sleeve is meshed with the straight gear 33 at the upper part of the driving shaft 26 again, and the locking effect is realized.

According to the invention, the middle part of the valve rod 10 can be provided with the limiting shaft shoulder 37, when water supply is regulated in the water supply process, the rectifying sleeve is driven to move upwards along the guide sleeve by rotating the screw rod 9, so that the lower end surface of the limiting shaft shoulder extends out of the lower end of the water inlet section of the rectifying sleeve, and the smooth water flow is ensured, so that the effect of conveniently regulating the water supply is achieved; when the adjustment is finished, the screw rod 9 is reversely rotated, the rectifying sleeve moves downwards along the guide sleeve, the lower end face of the limiting shaft shoulder is higher than the lower end face of the axial flow sleeve, so that when the heating air leaks, the valve core 6 moves upwards through the valve rod 10 to block the water inlet section of the rectifying sleeve, and the effect of preventing leakage is achieved.

The power source can be driven electrically or manually, and when the power source is rotated manually, the power source consists of a plug handle and a rotating handle, one end of the plug handle is fixedly connected with the rotating handle, the center of the end face of the other end is axially provided with a plug hole, and when the power source is used, the plug hole is meshed with the spur gear 33 of the driving shaft 26, and the depth of the plug hole is larger than that of the spur gear inner hole of the valve cover, so that the stroke of the valve core 6 can be regulated rapidly by a special key.

The invention can be provided with the key positioning groove at the upper end of the lock sleeve, and the diameter of the key positioning groove is matched with the outer diameter of the plug handle so as to achieve the effect of further rapid adjustment.

The invention can also be provided with a dial plate on the upper end face of the valve cover, the dial plate is provided with a scale concave line, an opening mark concave line and a closing mark concave line, one side of the upper end face of the lock sleeve is provided with a finger groove for accurately indicating and positioning, and the stroke of the valve core 6 can be rapidly known through the numerical value of the scale concave line corresponding to the finger groove.

When the anti-leakage filter screen cylinder is installed, the water inlet connecting pipe and the water outlet connecting pipe of the anti-leakage filter screen cylinder can be respectively in butt joint with the water inlet pipeline 41, so that the process of secondary connection with the water inlet pipeline 41 is omitted, the installation is greatly simplified, and the working efficiency is greatly improved; in the water supply process, water enters the filter screen cylinder through the water inlet connecting pipe, then enters the valve body through the filter screen cylinder, and flows into a user room through the anti-leakage device in the valve body and the water outlet connecting pipe, so that the safety of indoor water supply of the user is ensured.

When the stroke of the valve core of the anti-leakage filter valve is adjusted, a worker holds the rotating handle of the special key, inserts the inserting handle into the key positioning groove, the inserting hole at the lower end of the inserting handle is directly meshed with the spur gear, then presses down the lock sleeve, the lock sleeve moves downwards under the compressed state of the return spring 21, when the outer tooth ring section at the periphery of the lock sleeve is separated from the straight tooth inner hole of the valve cover, the circumferential locking of the lock sleeve is relieved, the special key is rotated, the driving shaft 26 is rotated by the special key to drive the screw 9 to rotate, the rectifying sleeve moves upwards or downwards under the guiding action of the sealing sleeve 16, the effect of adjusting the stroke of the valve core can be achieved, when the valve core descends by 1mm, the worker only needs to rotate the special key for 30 degrees, namely, the pointer groove on the lock sleeve points to the scale concave line for 30 degrees, after the adjustment, the special key is pulled upwards, the lock sleeve is reset under the tension action of the return spring 21, at this time, the outer tooth ring section at the periphery of the lock sleeve is meshed with the straight tooth inner hole of the valve cover again, the inner tooth ring section of the lock sleeve is reset and the spur gear at the upper part of the driving shaft 26 is prevented from being meshed again, and the action of the driving force of the screw 9 is achieved due to rotation and/or rotation or fluid.

When water supply is regulated in the water supply process, the valve rod 10 is driven to move downwards by the screw rod 9, so that the lower end surface of the limiting shaft shoulder extends out of the lower end of the water inlet section of the rectifying sleeve, smooth water flow is ensured, and the effect of conveniently regulating water supply is achieved; after adjustment, the screw rod 9 is reversely rotated, the valve rod 10 is upwards moved, so that the lower end surface of the limiting shaft shoulder is upwards moved into the axial flow sleeve, and when the heating air leaks, the valve core upwards moves through the valve rod 10 to block the water inlet section of the rectifying sleeve, thereby achieving the effect of preventing leakage.

In the heating process, impurity and filth in the water inlet pipeline are filtered through the filter screen barrel, impurity or filth are avoided getting into the indoor heating pipeline of user, and the scraping part in the filter screen filth scraping device in the filter screen barrel is automatic rotatory under the impact force effect of rivers, and the scraping edge 61 of rotatory scraping part side is automatic to be scraped the filth that hangs on the filter screen barrel inner wall, has improved the indoor heating pipeline's of user temperature greatly.

The control unit calculates and obtains an indoor pressure difference value through receiving water inlet pressure information uploaded by the temperature and pressure sensor and water return pressure information uploaded by the water return pressure sensor, when the pressure difference is gradually reduced and is smaller than a set value, the control unit indicates that excessive dirt in the filter is caused, at the moment, the control unit instructs the electric blow-down valve to blow down, the scraped dirt flows into the water return pipeline through the switch valve, the connecting pipeline and the one-way three-way valve, is discharged through the water return pipeline 42, and prevents the dirt from flowing back into the user pipeline through the one-way three-way valve 44;

when the pressure difference is gradually reduced and is smaller than a set value, indicating excessive dirt in a filter screen cylinder of the online self-cleaning anti-drain filter, at the moment, the control unit can instruct the switch valve to drain, so that the scraped dirt flows into the water return pipeline through the switch valve, the connecting pipeline and the one-way three-way valve, is discharged through the water return pipeline 42, and is prevented from flowing back into the user pipeline through the one-way three-way valve 44;

when the differential pressure value calculated by the control unit exceeds a set value, the end of sewage discharge is indicated, and the control unit instructs the switch valve to be automatically closed;

when the control unit knows that the pressure difference value is suddenly too low (almost zero), the indoor water leakage phenomenon is judged, and the control unit instructs the intelligent flow regulating valve to be automatically closed;

when the drainage point is removed, for example, a user drains water on an indoor pipeline, at the moment, the user closes a valve in the indoor pipeline, and the intelligent flow regulating valve and the online self-cleaning drainage-preventing filter can be automatically reset to recover normal heating; if the pressure difference is too low (or almost zero) in the set time, the control unit can not restore normal heating, and uploads the information to the heating main station through the network, and alarms are given in the heating main station system to prompt that water leakage occurs at the heating main station system, and field maintenance is needed, such as the condition that an indoor pipeline suddenly breaks when no one is at home.

By adopting the structure, the double-u-shaped structure of the filter and the anti-drain valve is skillfully combined into the single-u-shaped structure, so that the fluid resistance is reduced by 60%, the dirt cleaning is convenient, and the anti-drain performance is more stable. The device has the advantages of compact structure, energy saving (water, electricity and heat), self-balancing, field debugging-free, field maintenance-free, convenient installation and the like.

Noun interpretation: the term "on-line" as used herein means that the pipe is not required to be disassembled within the pipeline.

The on-line self-cleaning refers to self-cleaning in a pipeline without dismantling pipeline valves.

Claims (14)

1. The utility model provides an online self-cleaning anti-leakage water filter, includes valve body, valve gap and water conservancy diversion chamber, and the valve body left end is equipped with the water inlet connecting pipe, and the right-hand member is equipped with out the water connecting pipe, valve body upper end and valve gap fixed connection, the lower extreme is connected with the water conservancy diversion chamber, be equipped with the valve core chamber between valve gap and the water conservancy diversion chamber, be equipped with anti-leakage device in the valve core chamber, its characterized in that still includes filter screen section of thick bamboo, hydrodynamic filter screen section of thick bamboo filth scraping device and ooff valve, be equipped with filter screen section of thick bamboo between the water inlet channel of valve body and water inlet connecting pipe, the water inlet channel lower extreme is equipped with the drain, the drain downwardly extending and be connected with the ooff valve, the water inlet of filter screen section of thick bamboo upper end with water inlet connecting pipe is linked together, lower extreme and the fixed lower positioning seat fixed connection of drain, filter screen section of thick bamboo lateral wall delivery port is linked together with the water conservancy diversion chamber, be equipped with hydrodynamic filter screen section of thick bamboo filth scraping device in the filter screen section of thick bamboo, hydrodynamic filter screen section of thick bamboo filth scraping device includes scraping portion, upper connecting portion and/lower connecting portion, scraping portion lateral wall is equipped with scraping the sword along the section of thick bamboo axial setting, the upper end is equipped with the rotatable through the upper end of the articulated connection through the upper end of the articulated connection of the upper end of the filter screen section of thick bamboo.

2. The online self-cleaning anti-leakage filter according to claim 1, wherein the valve body is provided with a sensor mounting hole, the sensor mounting hole is communicated with the inner cavity of the valve body, a water inlet temperature and pressure sensor is arranged in the sensor mounting hole, and the water inlet temperature and pressure sensor is connected with the control unit.

3. An on-line self-cleaning anti-drain filter according to claim 2, wherein the on-off valve is an electromagnetic on-off valve or an electric on-off valve.

4. An on-line self-cleaning anti-drain filter according to claim 3, wherein the scraping portion comprises at least one scraper, the end face of the scraper forms an included angle with the impact direction of the water flow, and the side face of the scraper is provided with a scraping edge;

or when the number of the scrapers is more than two, the upper ends of the more than two scrapers are fixedly connected through an upper connecting ring, and/or the lower ends of the more than two scrapers are fixedly connected through a lower connecting ring, the upper ends of the upper connecting rings are provided with upper connecting parts which are rotatably connected, and/or the lower ends of the lower connecting rings are provided with lower connecting parts which are rotatably connected.

5. The online self-cleaning anti-leakage filter according to claim 3, wherein the scraping part is a self-rotating water wheel, blades of the self-rotating water wheel are axially arranged, end faces of the blades are intersected with the impact direction of water flow, and scraping blades are arranged on side walls of the blades of the self-rotating water wheel.

6. The online self-cleaning anti-leakage filter according to claim 3, wherein the scraping part consists of a rotation water wheel and scraping plates, at least 1 scraping plate is arranged at the upper end of the rotation water wheel, the scraping plates are axially arranged along the extending line of the axis of the rotation water wheel, scraping blades for scraping the inner wall of the filter screen cylinder are arranged on one side wall or two side walls of the scraping plates, the scraping plates are fixed on the end face of the rotation water wheel, a lower connecting part in rotatable connection is arranged at the lower end of the rotation water wheel, and an upper connecting part in rotatable connection is arranged at the upper end of the scraping plates.

7. An on-line self-cleaning anti-drain filter according to claim 4, 5 or 6, wherein the scraping edge is made of a non-metallic material with wear resistance, corrosion resistance and high elasticity.

8. An in-line self-cleaning anti-drain filter according to claim 7, wherein said scraping edge is formed of bristles.

9. An on-line self-cleaning anti-drainage filter as claimed in claim 4, 5, 6 or 8, wherein the surface shape of said scraper is gradually distorted from the lower end to the upper end, and the distortion direction of said scraper is the same as the rotation direction of the autorotation water wheel blade.

10. The on-line self-cleaning anti-leakage filter according to claim 1 or 2 or 3 or 4 or 5 or 6 or 8, wherein a valve core stroke fine adjustment device is arranged between the valve cover and the rectifying sleeve and comprises a screw rod and a guide sleeve, the guide sleeve is sleeved outside the rectifying sleeve, the periphery of the lower part of the guide sleeve is fixedly connected with the inner wall of the anti-leakage cavity in a sealing way through an outer limit flange 19 arranged on the periphery of the lower part of the guide sleeve, the lower part of the guide sleeve is a polyhedral cylindrical inner hole and is matched with an outer polyhedral cylinder arranged on the outer wall of the rectifying sleeve to realize axial sliding connection, and the upper part of the guide sleeve is connected with a driving shaft in a sealing way; the screw rod is in threaded connection with the rectifying sleeve, the lower end of the screw rod is fixedly connected with the valve rod, and the upper end of the screw rod is fixedly connected with the driving shaft.

11. The on-line self-cleaning anti-leakage water filter according to claim 10, wherein the anti-leakage device comprises a rectifying sleeve, a driving shaft and a supporting plate, the rectifying sleeve is positioned in an anti-leakage cavity in the center of a water inlet connecting pipe and a water outlet connecting pipe, the axis of the rectifying sleeve is vertical to the axes of the water inlet connecting pipe and the water outlet connecting pipe of a valve body, a connecting hole section is arranged at the upper part of an inner cavity of the rectifying sleeve, a water inlet hole section is arranged at the lower part of the inner cavity of the rectifying sleeve, a water outlet through hole for discharging water in the water inlet hole section of the rectifying sleeve to a water outlet is arranged at one side of the rectifying sleeve, the outer wall of the upper end of the rectifying sleeve is in sealing connection with the inner wall of the anti-leakage cavity, the outer wall of the lower part of the rectifying sleeve is in sealing connection with the side wall of the water outlet connecting pipe through the supporting plate, the supporting plate is fixedly connected with the rectifying sleeve, or is fixedly connected with the side wall of the water outlet connecting pipe, the upper end of the supporting plate is fixedly connected with a partition plate, the valve rod passes through the rectifying cavity and the valve cavity, the upper end is fixedly connected with the driving shaft, the lower end passes through the water inlet hole on the bottom surface of the valve cavity and the valve core cavity, the upper end of the valve rod is hinged with a valve rod jack arranged on the bottom surface of the flow guide cavity, the upper end of the valve core is connected with the valve core cavity, the upper end of the valve sleeve is in sealing connection, the valve sleeve is connected with the sealing cavity, and the valve sleeve is in sealing part, and the sealing part is connected with the valve cavity, and the valve sleeve.

12. An in-line self-cleaning anti-drain filter according to claim 11, wherein the lower portion of the valve core is conical, hemispherical, or cylindrical.

13. An on-line self-cleaning anti-drain filter according to claim 12, wherein a screw locking device is sleeved on the drive shaft between the guide sleeve and the valve cover.

14. The online self-cleaning anti-leakage filter according to claim 11, 12 or 13, wherein a limiting shaft shoulder is arranged in the middle of the valve rod, and when water supply is adjusted in the water supply process, the rectifying sleeve is driven to move upwards along the guide sleeve by rotating the screw rod, so that the lower end surface of the limiting shaft shoulder extends out of the lower end of the water inlet section of the rectifying sleeve, and smooth water flow is ensured; when the adjustment is finished, the screw rod is reversely rotated, the rectifying sleeve moves downwards along the guide sleeve, the lower end face of the limiting shaft shoulder is higher than the lower end face of the axial flow sleeve, and therefore when the heating air leaks, the valve core moves upwards through the valve rod to block the water inlet section of the rectifying sleeve.