Reverse osmosis membrane replacement mechanism for sewage filter

Abstract

The invention discloses a reverse osmosis membrane replacement mechanism for a sewage filter, and relates to the technical field of sewage filtration, the reverse osmosis membrane replacement mechanism comprises a working frame, the top of the working frame is sleeved with a filter shell, a plurality of RO membranes are annularly and slidably mounted on the inner surface of the filter shell at equal intervals, and a ratchet wheel on a transmission rod is driven by a servo motor to be mutually clamped with a pawl and rotate; and under the action of the nut, the filter shell is separated from the purified water outlet pipe, so that the RO membrane is not influenced by the purified water outlet pipe when being replaced, the other ratchet wheel and the pawl on the transmission rod are driven by the servo motor to be mutually clamped and reversely rotate, and under the action of the telescopic rod, the telescopic rod is driven to drive the filter shell to rotate, so that the RO membrane is replaced. Therefore, the RO membrane can be automatically replaced, complexity and time consumption of manual operation are avoided, the probability that replacement is not in place due to improper manual operation or misjudgment is effectively reduced, the labor cost is further reduced, and the overall working efficiency of the sewage filter is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage filtration, in particular to a reverse osmosis membrane replacement mechanism for a sewage filter. Background Art

[0002] Residential, government, commercial or industrial areas will discharge sewage to varying degrees. Since the wastewater contains a large amount of organic matter and inorganic salts and other chemical substances, if it is directly discharged, it will cause great harm to the environment. Therefore, the wastewater is currently filtered through sewage filters to remove impurities and pollutants in the wastewater, including sediment, suspended matter, microorganisms, etc.

[0003] At present, after a long period of use, the reverse osmosis membrane inside the sewage filter used to filter out impurities needs to be replaced regularly due to damage or poor filtering effect. The existing method is usually manually disassembled and replaced by workers, but the manual replacement method is cumbersome and consumes a lot of manpower and time. It may also increase the probability of inadequate replacement due to improper manual operation or misjudgment, which will increase the overall cost of replacing the reverse osmosis membrane of the sewage filter and reduce the overall working efficiency of the sewage filter. Summary of the invention

[0004] In view of this, and in view of the deficiencies in the prior art, the present invention provides a reverse osmosis membrane replacement mechanism for a sewage filter to solve the problem in the prior art that manual replacement increases the probability of inadequate replacement and consumes a lot of manpower and time.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reverse osmosis membrane replacement mechanism for a sewage filter, comprising a working frame, a filter housing is sleeved on the top of the working frame, a plurality of RO membranes are slidably mounted in an annular manner at equal intervals on the inner surface of the filter housing, a sewage inlet pipe is fixedly connected in an annular manner at equal intervals on the side of the filter housing close to the RO membrane water inlet, and a clean water outlet pipe is equidistantly engaged with the side of the filter housing away from the sewage inlet pipe; an automatic replacement mechanism is arranged on the working frame, a decontamination mechanism is arranged inside the filter housing, and a cleaning mechanism is arranged on the side of the top of the working frame close to the clean water outlet pipe; the automatic replacement mechanism comprises a servo motor, the servo motor is fixedly connected to the side of the working frame close to the sewage inlet pipe, and the servo motor is fixedly connected to the side of the working frame close to the sewage inlet pipe. The output shaft of the servo motor is fixedly connected to a transmission rod, and at least two ratchets are fixedly connected to the transmission rod at equal intervals, and the ratchet teeth of the two ratchets face opposite directions. The outer surface of the transmission rod is equidistantly and rotatably connected to at least two connecting rings, and the two connecting rings are rotatably connected with pawls, and the pawls are respectively engaged with the two ratchets. A connecting ring close to the filter housing is fixedly connected to a reciprocating screw, and one end of the reciprocating screw is rotatably connected to a side of the top of the work frame close to the purified water outlet pipe, and the filter housing is connected to the reciprocating screw through a nut thread, and a telescopic rod is symmetrically rotatably connected to one side of a connecting ring close to the servo motor, and the end of the telescopic rod away from the servo motor is rotatably connected to the filter housing.

[0006] Preferably, the cleaning mechanism includes an electric push rod, which is fixedly connected to one side of the top of the work frame close to the clean water outlet pipe, one end of the output rod of the electric push rod is rotatably connected to a ball screw, and the end of the ball screw away from the electric push rod is fixedly connected to a push lock, and the push lock is adapted to the water outlet of the RO membrane.

[0007] Preferably, a flushing cylinder is fixedly connected to one side of the top of the work frame close to the purified water outlet pipe, the inner diameter of the flushing cylinder is adapted to the outer diameter of the RO membrane, and a limit nut is fixedly connected to one side of the flushing cylinder close to the electric push rod, and the limit nut is threadedly matched with the ball screw.

[0008] Preferably, a plurality of high-pressure nozzles are fixedly connected in an annular manner with equal intervals on one side of the flushing cylinder close to the electric push rod, and the nozzles of the plurality of high-pressure nozzles are all located at the outer edge of the limiting nut.

[0009] Preferably, the decontamination mechanism includes a sealing plate, which is annularly equidistantly slidably connected in the filter housing, a solenoid valve is installed on the side of the sealing plate close to the sewage inlet pipe, a transmission gear is rotatably connected at the center of the side of the sealing plate close to the sewage inlet pipe, and a cleaning ring is fixedly connected to the side of the transmission gear away from the solenoid valve, the cleaning ring is located outside the sealing plate, and brushes are equidistantly arranged on the outer surface of the cleaning ring, and the brushes are in contact with the inner surface of the filter housing.

[0010] Preferably, a connecting rod is fixedly connected to the side of the sealing plate away from the cleaning ring, and a half-tooth ring gear and a half-tooth gear are fixedly connected to the outer surface of the connecting rod respectively. The half-tooth ring gear and the half-tooth gear are both located in a groove at the center of the sealing plate, and the tooth position of the half-tooth ring gear is opposite to the tooth position of the half-tooth gear, and the transmission gears are meshed with the half-tooth ring gear and the half-tooth gear.

[0011] Preferably, a worm wheel is fixedly connected to the outer surface of the connecting rod, a worm is rotatably connected in the groove on the sealing plate, the worm wheel is meshed with the worm, a friction wheel is rotatably connected in the groove on the sealing plate, and the outer surface of the friction wheel is in contact with the inner surface of the filter housing.

[0012] Preferably, the outer surfaces of the rotating shafts of the worm and the friction wheel are fixedly connected with synchronous wheels, and the synchronous wheels are connected through a synchronous belt transmission.

[0013] Preferably, a vibrator is fixedly connected to one side of the cleaning ring close to the sealing plate.

[0014] Compared with the prior art, the present invention provides a reverse osmosis membrane replacement mechanism for a sewage filter, which has the following beneficial effects:

[0015] A servo motor drives a ratchet and a pawl on the transmission rod to engage with each other and rotate, causing the reciprocating screw to rotate accordingly, and under the action of the nut, the filter housing is separated from the clean water outlet pipe, thereby not being affected by the clean water outlet pipe when the RO membrane is replaced, and the servo motor drives another ratchet and a pawl on the transmission rod to engage with each other and rotate in the opposite direction, and under the action of the telescopic rod, the telescopic rod drives the filter housing to rotate, thereby automatically completing the replacement of the RO membrane, avoiding the tedious and time-consuming manual operation, and effectively reducing the probability of inadequate replacement due to improper manual operation or misjudgment, thereby reducing labor costs and improving the overall working efficiency of the sewage filter.

[0016] The RO membrane is pushed and pulled by an electric push rod so that it can enter and exit the filter housing, and the ball screw moves along the inside of the limit nut while rotating, so that some dirt on the RO membrane can be thrown onto the inner wall of the flushing cylinder, and then the clean water is evenly sprayed on the RO membrane through the high-pressure nozzle, thereby avoiding excessive or insufficient local cleaning of the RO membrane, and ensuring that the clean water can be evenly sprayed on the surface of the RO membrane, thereby improving the effect and efficiency of cleaning the RO membrane, and can also extend the service life of the RO membrane 102.

[0017] The sealing plate and the solenoid valve prevent external air from entering between the sealing plate and the RO membrane, causing the internal air pressure to gradually decrease, and the air pressure difference on both sides of the sealing plate is used to make it move in the same direction as the RO membrane, and the friction wheel and the inner surface of the filter housing rub and roll, causing the half-toothed ring gear and the half-toothed gear on the connecting rod to rotate in the same direction, and the two drive the transmission gear to rotate back and forth alternately, thereby allowing the cleaning ring to reciprocate to clean the dirt attached to the inner surface of the filter housing, and then the dirt tightly attached to the inner surface of the filter housing is loosened by the vibrator, thereby effectively removing the dirt attached to the inner surface of the filter housing, avoiding the problem of the new RO membrane being contaminated by impurities remaining in the pipeline, and at the same time ensuring the cleanliness of the new RO membrane, thereby extending the service life of the RO membrane and improving the filtration efficiency of the sewage filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-section structure of the filter housing in the present invention;

[0020] Figure 3 It is a structural exploded diagram of the automatic replacement mechanism in the present invention;

[0021] Figure 4 It is an exploded view of the structure of the ratchet pawl in the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting ring and the pawl in the present invention;

[0023] Figure 6 It is an enlarged view of the structure of the flushing cylinder in the present invention;

[0024] Figure 7 It is a schematic diagram of the cross-section structure of the flushing cylinder in the present invention;

[0025] Figure 8 It is an enlarged structural diagram of the ball screw in the present invention;

[0026] Fig. 9 It is a structural explosion diagram of the cleaning mechanism in the present invention;

[0027] Fig.10 It is a schematic diagram of the cross-section structure of the sealing plate in the present invention;

[0028] Fig.11 It is an enlarged structural diagram of the half-toothed ring gear in the present invention;

[0029] Fig.12 It is a structural explosion diagram of the decontamination mechanism in the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Work stand; 101. Filter housing; 102. RO membrane; 103. Sewage inlet pipe; 104. Clean water outlet pipe;

[0032] Automatic replacement mechanism: 2, servo motor; 201, transmission rod; 202, ratchet; 203, connecting ring; 204, ratchet; 205, reciprocating screw; 206, telescopic rod;

[0033] Cleaning mechanism: 3, electric push rod; 301, ball screw; 302, press lock; 303, flushing cylinder; 304, limit screw nut; 305, high-pressure nozzle;

[0034] Decontamination mechanism: 4, sealing plate; 401, solenoid valve; 402, transmission gear; 403, cleaning ring; 404, connecting rod; 405, half-toothed ring gear; 406, half-toothed gear; 407, worm wheel; 408, worm; 409, friction wheel; 410, synchronous wheel; 411, synchronous belt; 412, vibrator. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0037] Embodiment 1

[0038] Please refer to Figures 1 to 5 , Fig.12 As shown, in order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a reverse osmosis membrane replacement mechanism for a sewage filter, including a working frame 1, a filter housing 101 is sleeved on the top of the working frame 1, and the two are interference-connected, and the filter housing 101 can slide back and forth horizontally along the top of the working frame 1 for subsequent replacement and use. A plurality of RO membranes 102 are slidably installed in an annular manner at equal intervals on the inner surface of the filter housing 101, a sewage inlet pipe 103 is fixedly connected in an annular manner at equal intervals on one side of the filter housing 101 close to the water inlet of the RO membrane 102, and the sewage inlet pipe 103 is arranged corresponding to the RO membrane 102, a clean water outlet pipe 104 is equidistantly buckled on one side of the filter housing 101 away from the sewage inlet pipe 103, and a sealing ring is installed at the intersection between the filter housing 101 and the clean water outlet pipe 104, which is used to increase the sealing performance of the sewage filter.

[0039] An automatic replacement mechanism is provided on the working frame 1, and the automatic replacement mechanism includes a servo motor 2, which is fixedly connected to a side of the working frame 1 close to the sewage inlet pipe 103, and the output shaft of the servo motor 2 is fixedly connected to a transmission rod 201, and at least two ratchets 202 are equidistantly fixedly connected to the transmission rod 201, and the ratchet teeth of the two ratchets 202 face opposite directions. At least two connecting rings 203 are equidistantly rotatably connected to the outer surface of the transmission rod 201, and ratchet pawls 204 are rotatably connected to the two connecting rings 203, wherein the two connecting rings 203 are both installed with abutment plates, which are used to prevent the connecting rings 203 from being subjected to force and deviating from the ratchet 204, and the ratchet 204 is located in the notch of the connecting ring 203, and can be used to limit its rotation amplitude The ratchet 204 rebounds through the spring sheet between the notch of the connecting ring 203. The number of ratchet 204 is not less than two, and the two ratchet 204 face opposite directions. The two ratchet 204 engage with the two ratchet wheels 202 respectively. A connecting ring 203 near the filter housing 101 is fixedly connected with a reciprocating screw 205. One end of the reciprocating screw 205 is rotatably connected to the top of the work frame 1 near the clean water outlet pipe 104, and the reciprocating screw 205 penetrates the filter housing 101. The filter housing 101 is connected to the reciprocating screw 205 through a nut thread, wherein the thread length on the reciprocating screw 205 is twice the displacement length required for the filter housing 101, thereby enabling the filter housing 101 to be separated from the clean water outlet pipe 104. A connecting ring 203 near the servo motor 2 is symmetrically rotatably connected with a telescopic rod 206 on one side, and the end of the telescopic rod 206 away from the servo motor 2 is rotatably connected to the filter housing 101.

[0040] Working process: When in use, the worker first connects the sewage pipe to be filtered to the sewage inlet pipe 103 through a nut thread, aligns the filter housing 101 with the clean water outlet pipe 104 and buckles them through a sealing ring. The clean water outlet pipe 104 is connected to the external water outlet connecting pipe, so that the sewage can enter the filter housing 101 from it, and then be discharged after being filtered and purified by the RO membrane 102. When the RO membrane 102 that has been used for a certain period of time needs to be replaced, the worker controls the servo motor 2 to start through the controller, so that it drives the transmission rod 201 to rotate, and the two ratchet teeth on the transmission rod 201 face opposite directions. The ratchet 202 rotates in the same direction. At this time, a ratchet 202 close to the servo motor 2 and the pawl 204 fitted thereto do not engage with each other, so the connecting ring 203 of the pawl 204 here cannot rotate synchronously with the ratchet 202, and the telescopic rod 206 on the connecting ring 203 cannot rotate either, so the telescopic rod 206 cannot drive the filter housing 101 to rotate on the top of the working frame 1. At the same time, a ratchet 202 close to the filter housing 101 and a pawl 204 fitted therewith are engaged with each other, so that the connecting ring 203 of the pawl 204 here can rotate synchronously with the ratchet 202, so that the reciprocating screw 205 fixedly connected to the connecting ring 203 can rotate synchronously therewith, and under the action of the nut thereon, the filter housing 101 is prompted to move along the top of the working frame 1 toward the servo motor 2. At the same time, the filter housing 101 moves toward the servo motor 2 and continuously squeezes the telescopic rod 206, causing it to continuously shrink inward, thereby causing the filter housing 101 to be separated from the purified water outlet pipe 104, thereby enabling the filter housing 101 to be able to When the RO membrane 102 is rotated to be replaced, it is not affected by the purified water outlet pipe 104. Then, the worker controls the servo motor 2 to rotate in the opposite direction through the controller, so that it drives the transmission rod 201 to rotate in the opposite direction, and the two ratchets 202 on the transmission rod 201 also rotate in the opposite direction. At this time, a ratchet 202 close to the filter housing 101 and the pawl 204 fitted therewith are not engaged with each other, so the connecting ring 203 of the pawl 204 here cannot rotate synchronously with the ratchet 202, so that the reciprocating screw 205 fixedly connected to the connecting ring 203 cannot rotate synchronously therewith, thereby failing to drive the filter housing 101 to move along the top of the working frame 1 toward the servo motor 2.At the same time, a ratchet 202 close to the servo motor 2 and a pawl 204 attached thereto are engaged with each other, so that the connecting ring 203 of the pawl 204 here can rotate synchronously with the ratchet 202, and the telescopic rod 206 on the connecting ring 203 can also rotate synchronously, thereby the telescopic rod 206 can drive the filter housing 101 to rotate in contact with the top of the working frame 1 until the unused RO membrane 102 on the filter housing 101 is rotated and replaced to be aligned with the purified water outlet pipe 104. At the same time, during the process of rotating the filter housing 101 to replace the unused RO membrane 102, the filter housing 101 will continue to be driven to move along the top of the working frame 1 toward the servo motor 2 through the cooperation of the nut and the reciprocating screw 205 thereon, so that the nut on the filter housing 101 is located at the end point of the reciprocating screw 205 so as to reciprocate. The lead screw 205 drives the filter housing 101 to move away from the servo motor 2 better next time. Then the worker controls the servo motor 2 to start again through the controller, so that it drives the two ratchets 202 on the transmission rod 201 to rotate, and the telescopic rod 206 does not rotate synchronously with it. Similarly, the filter housing 101 moves away from the servo motor 2, so that the filter housing 101 gradually approaches the clean water outlet pipe 104, until the RO membrane 102 that is not filtering is engaged with the clean water outlet pipe 104, and then the servo motor 2 is turned off by the controller, thereby automatically completing the replacement of the RO membrane 102, avoiding the tedious and time-consuming manual operation, and effectively reducing the probability of inadequate replacement due to improper manual operation or misjudgment, thereby reducing labor costs and improving the overall working efficiency of the sewage filter.

[0041] Embodiment 2

[0042] Please refer to Figures 5 to 9As shown, a cleaning mechanism is provided on one side of the top of the working frame 1 close to the clean water outlet pipe 104, and the cleaning mechanism includes an electric push rod 3, which is fixedly connected to one side of the top of the working frame 1 close to the clean water outlet pipe 104, one end of the output rod of the electric push rod 3 is rotatably connected to a ball screw 301, and one end of the ball screw 301 away from the electric push rod 3 is fixedly connected to a push lock 302, and the push lock 302 is adapted to the water outlet of the RO membrane 102, wherein a lock seat adapted to the push lock 302 is arranged on the outer edge of the water outlet of the RO membrane 102, thereby the push lock 302 can be engaged with or separated from the RO membrane 102. A flushing cylinder 303 is fixedly connected to one side of the top of the work frame 1 near the clean water outlet pipe 104. The inner diameter of the flushing cylinder 303 matches the outer diameter of the RO membrane 102. A limit screw nut 304 is fixedly connected to one side of the flushing cylinder 303 near the electric push rod 3. The limit screw nut 304 and the ball screw 301 are threadedly matched. A plurality of high-pressure nozzles 305 are fixedly connected to one side of the flushing cylinder 303 near the electric push rod 3 in an annular manner. The nozzles of the plurality of high-pressure nozzles 305 are all located at the outer edge of the limit screw nut 304, and the nozzles of the high-pressure nozzles 305 are arranged to the opposite side, and the front end of the high-pressure nozzle 305 is inclined and symmetrically facing the central axis of the flushing cylinder 303.

[0043] Working process: After the worker replaces the RO membrane 102, the worker controls the electric push rod 3 to extend continuously through the controller. At this time, the electric push rod 3 pushes the pressing lock buckle 302 through the ball screw 301 to continuously extend into the flushing cylinder 303, and then the pressing lock buckle 302 passes through the flushing cylinder 303 and extends into the filter housing 101, so that the buckle on the pressing lock buckle 302 and the lock seat on the outer edge of the water outlet of the RO membrane 102 are engaged with each other, so that the RO membrane 102 is connected to the ball screw 301 and can move synchronously, and then the output rod of the electric push rod 3 is controlled by the controller to be continuously retracted, thereby causing the electric push rod 3 to pull the RO membrane 102 to move in its direction and gradually extend into the flushing cylinder 303. In this process, the ball screw 301 on the electric push rod 3 also moves synchronously. When the ball screw 301 and the flushing When the limit nut 304 on the cylinder 303 is threadedly connected, the ball screw 301 is prompted to rotate along its inner surface, thereby driving the RO membrane 102 to rotate synchronously, and then some of the dirt on the RO membrane 102 can be thrown onto the inner wall of the flushing cylinder 303, thereby facilitating subsequent flushing work. At the same time, the worker uses the clean water configured on the high-pressure nozzle 305 to spray the RO membrane 102 evenly, so that the high-pressure nozzle 305 can continuously flush the RO membrane 102, and under the action of the continuous rotation of the RO membrane 102, it can avoid the situation of excessive or insufficient local cleaning of the RO membrane 102, and ensure that the clean water can be evenly sprayed on the surface of the RO membrane 102, thereby improving the effect and efficiency of cleaning the RO membrane 102, and can also extend the service life of the RO membrane 102.

[0044] Embodiment 3

[0045] Please refer to Figure 2 , Figures 10 to 12 As shown, a decontamination mechanism is arranged inside the filter housing 101, and the decontamination mechanism includes a sealing plate 4, which is slidably connected in an annular manner at equal intervals in the filter housing 101, and a solenoid valve 401 is installed on one side of the sealing plate 4 close to the sewage inlet pipe 103, and a transmission gear 402 is rotatably connected at the center of one side of the sealing plate 4 close to the sewage inlet pipe 103, and the transmission gear 402 is located in a groove at the center of the sealing plate 4, and a cleaning ring 403 is fixedly connected to the side of the transmission gear 402 away from the solenoid valve 401, and the cleaning ring 403 is located outside the sealing plate 4, and brushes are equidistantly arranged on the outer surface of the cleaning ring 403, and the brushes fit the inner surface of the filter housing 101. A connecting rod 404 is fixedly connected to one side of the sealing plate 4 away from the cleaning ring 403. A semi-toothed ring gear 405 and a semi-toothed gear 406 are fixedly connected to the outer surface of the connecting rod 404. The semi-toothed ring gear 405 and the semi-toothed gear 406 are both located in the groove at the center of the sealing plate 4. The gear position of the semi-toothed ring gear 405 is opposite to the gear position of the semi-toothed gear 406. The transmission gear 402 is meshed with the semi-toothed ring gear 405 and the semi-toothed gear 406. A worm gear 407 is fixedly connected to the outer surface of the connecting rod 404. A worm 408 is rotatably connected in the groove on the sealing plate 4. The worm gear 407 meshes with the worm 408. A friction wheel 409 is rotatably connected in the groove on the sealing plate 4. The outer surface of the friction wheel 409 fits the inner surface of the filter housing 101. The outer surfaces of the rotating shafts of the worm 408 and the friction wheel 409 are fixedly connected with synchronous wheels 410, and the synchronous wheels 410 are connected through a synchronous belt 411. A vibrator 412 is fixedly connected to the side of the cleaning ring 403 close to the sealing plate 4, which is used to loosen stubborn stains on the inner surface of the filter housing 101.

[0046] Working process: When the electric push rod 3 pulls the RO membrane 102 to the outside of the filter housing 101 by pressing the lock buckle 302, the sealing ring arranged on the outer surface of the RO membrane 102 makes the space between the sewage inlet pipe 103 and the RO membrane 102 of the filter housing 101 in a closed state. The solenoid valve 401 is first controlled by the controller to be closed, so that the outside air cannot enter between the sealing plate 4 and the RO membrane 102. When the RO membrane 102 moves out of the filter housing 101, the space between the sealing plate 4 and the RO membrane 102 inside the filter housing 101 gradually increases, and the internal air pressure gradually decreases due to the closing of the solenoid valve 401. The outside air enters the space between the sealing plate 4 and the filter housing 101 from the sewage inlet pipe 103, so that the space inside the filter housing 101 is The air pressure on both sides of the sealing plate 4 is unbalanced, so the sealing plate 4 is pushed by the external atmospheric pressure and moves along the inside of the filter housing 101 with the RO membrane 102. In this process, the friction wheel 409 on the sealing plate 4 rolls at a uniform speed along the inner surface of the filter housing 101, and the friction wheel 409 drives the synchronous wheel 410 thereon to rotate, and at the same time, the synchronous wheel 410 drives the synchronous belt 411 connected to it to rotate accordingly. At this time, the synchronous belt 411 drives the synchronous wheel 410 on the worm 408 to rotate synchronously with the friction wheel 409, so that the worm 408 also rotates accordingly, and then the worm 408 drives the worm wheel 407 fixedly connected to it to rotate, and then the worm wheel 407 drives the semi-toothed ring gear 405 on the connecting rod 404 and the semi-toothed gear 407. 6 rotate synchronously. When the half-toothed ring gear 405 is meshed with the transmission gear 402, the half-toothed ring gear 406 and the transmission gear 402 do not mesh with each other. Therefore, the transmission gear 402 rotates in the same direction as the half-toothed ring gear 405, and the cleaning ring 403 set at one end of the transmission gear 402 also rotates in the same direction. The brush on the cleaning ring 403 then continuously cleans the dirt attached to the inner surface of the filter housing 101. When the half-toothed gear 406 is meshed with the transmission gear 402, the half-toothed ring gear 405 and the transmission gear 402 do not mesh with each other. Therefore, the transmission gear 402 rotates in the opposite direction with the half-toothed gear 406, and the cleaning ring 403 set at one end of the transmission gear 402 also rotates in the opposite direction, so that the cleaning ring 403 can be The dirt attached to the inner surface of the filter housing 101 is cleaned by reciprocating rotation. At the same time, the worker starts the vibrator 412 on the cleaning ring 403 to start working and transmit the vibration force to the cleaning ring 403 and the sealing plate 4, and then transmits the vibration force to the filter housing 101, thereby loosening the dirt tightly attached to the inner surface of the filter housing 101, making it easy for the cleaning ring 403 to clean the stubborn stains, thereby effectively removing the dirt attached to the inner surface of the filter housing 101, avoiding the problem of the new RO membrane 102 being contaminated by the impurities remaining in the pipeline, and ensuring the cleanliness of the new RO membrane 102, thereby extending the service life of the RO membrane 102 and improving the filtering efficiency of the sewage filter.

[0047] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A reverse osmosis membrane replacement mechanism for a sewage filter, characterized in that: The invention comprises a working frame (1), wherein a filter housing (101) is sleeved on the top of the working frame (1), and a plurality of RO membranes (102) are slidably mounted in an annular manner at equal intervals on the inner surface of the filter housing (101); a sewage inlet pipe (103) is fixedly connected in an annular manner at equal intervals on one side of the filter housing (101) close to the water inlet of the RO membrane (102), and a purified water outlet pipe (104) is buckled in an equal interval on one side of the filter housing (101) away from the sewage inlet pipe (103); The working frame (1) is provided with an automatic replacement mechanism, the filter housing (101) is provided with a decontamination mechanism, and the top of the working frame (1) is provided with a cleaning mechanism on one side close to the clean water outlet pipe (104); The automatic replacement mechanism comprises a servo motor (2), the servo motor (2) being fixedly connected to a side of a working frame (1) close to a sewage inlet pipe (103), the output shaft of the servo motor (2) being fixedly connected to a transmission rod (201), the transmission rod (201) being equidistantly fixedly connected to at least two ratchet wheels (202), the ratchet teeth of the two ratchet wheels (202) facing opposite directions, the outer surface of the transmission rod (201) being equidistantly rotatably connected to at least two connecting rings (203), the two connecting rings (203) being rotatably connected to ratchet pawls (204), the ratchet pawls (204) The two ratchets (202) are respectively engaged with each other, a connecting ring (203) close to the filter housing (101) is fixedly connected to a reciprocating screw (205), one end of the reciprocating screw (205) is rotatably connected to a side of the top of the working frame (1) close to the purified water outlet pipe (104), the filter housing (101) is connected to the reciprocating screw (205) via a nut thread, a telescopic rod (206) is symmetrically rotatably connected to one side of a connecting ring (203) close to the servo motor (2), and one end of the telescopic rod (206) away from the servo motor (2) is rotatably connected to the filter housing (101).

2. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 1, characterized in that: The cleaning mechanism comprises an electric push rod (3), the electric push rod (3) being fixedly connected to a side of the top of the working frame (1) close to the clean water outlet pipe (104), one end of the output rod of the electric push rod (3) being rotatably connected to a ball screw (301), and one end of the ball screw (301) being away from the electric push rod (3) being fixedly connected to a push lock (302), and the push lock (302) being compatible with the water outlet of the RO membrane (102).

3. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 2, characterized in that: A flushing cylinder (303) is fixedly connected to one side of the top of the working frame (1) close to the purified water outlet pipe (104); the inner diameter of the flushing cylinder (303) is matched to the outer diameter of the RO membrane (102); a limit screw nut (304) is fixedly connected to one side of the flushing cylinder (303) close to the electric push rod (3); and the limit screw nut (304) is threadedly matched with the ball screw (301).

4. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 3, characterized in that: A plurality of high-pressure nozzles (305) are fixedly connected in an annular manner and equidistantly to one side of the flushing cylinder (303) close to the electric push rod (3), and the nozzles of the plurality of high-pressure nozzles (305) are all located at the outer edge of the limiting nut (304).

5. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 1, characterized in that: The decontamination mechanism comprises a sealing plate (4), the sealing plate (4) being slidably connected in an annular manner at equal intervals in the filter housing (101), a solenoid valve (401) being installed on one side of the sealing plate (4) close to the sewage inlet pipe (103), a transmission gear (402) being rotatably connected at the center of one side of the sealing plate (4) close to the sewage inlet pipe (103), a cleaning ring (403) being fixedly connected on one side of the transmission gear (402) away from the solenoid valve (401), the cleaning ring (403) being located outside the sealing plate (4), brushes being equidistantly arranged on the outer surface of the cleaning ring (403), and being in contact with the inner surface of the filter housing (101).

6. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 5, characterized in that: A connecting rod (404) is fixedly connected to one side of the sealing plate (4) away from the cleaning ring (403); a half-toothed ring gear (405) and a half-toothed gear (406) are fixedly connected to the outer surface of the connecting rod (404); the half-toothed ring gear (405) and the half-toothed gear (406) are both located in a groove at the center of the sealing plate (4); the gear teeth position of the half-toothed ring gear (405) are opposite to the gear teeth position of the half-toothed gear (406); and the transmission gear (402) is meshed with the half-toothed ring gear (405) and the half-toothed gear (406).

7. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 6, characterized in that: A worm wheel (407) is fixedly connected to the outer surface of the connecting rod (404), a worm (408) is rotatably connected in the groove on the sealing plate (4), the worm wheel (407) and the worm (408) are meshed, a friction wheel (409) is rotatably connected in the groove on the sealing plate (4), and the outer surface of the friction wheel (409) is in contact with the inner surface of the filter housing (101).

8. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 7, characterized in that: The outer surfaces of the rotating shafts of the worm (408) and the friction wheel (409) are fixedly connected with synchronous wheels (410), and the synchronous wheels (410) are connected through a synchronous belt (411).

9. The reverse osmosis membrane replacement mechanism for a sewage filter according to claim 8, characterized in that: A vibrator (412) is fixedly connected to one side of the cleaning ring (403) close to the sealing plate (4).

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