Automatic cleaning device for ultrafiltration membrane

Abstract

The invention relates to the technical field of ultrafiltration membrane cleaning, in particular to an automatic cleaning device for an ultrafiltration membrane, comprising: an ultrafiltration mechanism comprising a cylinder, an infusion tube and an ultrafiltration tube; the moving mechanism comprises a brushing pipe and rollers; the cleaning mechanism comprises a drill bit and a water injection nozzle, and the water injection nozzle is opened or closed according to the flow direction of the cleaning fluid; the flow direction of cleaning liquid is controlled to achieve forward flushing and back flushing, meanwhile, the deflection angle of a rolling wheel is controlled, a flushing pipe rotates and is stepped or retracted step by step, scraping and sweeping can be conducted through a drill bit while the flushing pipe rotates, the cleaning effect is improved, opening and closing of a window and a partition plate are adjusted according to the direction of the cleaning liquid, and the flushing position of the inner wall of the ultrafiltration pipe is changed. And the opening and closing of the fan blades can be automatically adjusted along with the direction of the cleaning liquid, so that the impurities on the inner wall of the ultrafiltration tube are drilled, scraped and sucked away through the window, the situation that the cleaning liquid cannot flow due to the fact that the impurities block a channel in the cleaning process is prevented, and the cleaning effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ultrafiltration membrane cleaning, in particular to an automatic cleaning device for ultrafiltration membrane. Background Art

[0002] Gas field produced water includes a variety of substances, such as: salts and minerals, organic matter, suspended matter including solid particles such as silt, rust, humus, chemical additives, dissolved gases such as methane, carbon dioxide, hydrogen sulfide, etc.; since the composition of gas field produced water is complex and has certain pollution, it needs to be treated harmlessly. Ultrafiltration membrane filtration technology is a membrane separation technology that uses a semi-permeable membrane with a microporous structure to filter the liquid, thereby removing particulate matter, colloids, bacteria, viruses and other macromolecular pollutants in the water.

[0003] During use, the membrane pores of the ultrafiltration membrane are blocked by particulate matter, colloids, organic matter or microorganisms, resulting in a decrease in membrane flux and reduced operating efficiency. Some chemicals will react with the membrane material, causing membrane performance to deteriorate or be damaged. Solid particles may cause mechanical wear to the membrane and shorten the service life of the membrane. Therefore, the ultrafiltration membrane needs to be cleaned in time during use to prevent the filtration efficiency from decreasing due to blockage of the ultrafiltration membrane.

[0004] The existing Chinese patent application with publication number CN110559864A discloses an ultrafiltration membrane self-cleaning device, which includes a water inlet system, an ultrafiltration membrane system, a backwash system and a hydraulic automatic control system; the ultrafiltration membrane system includes an ultrafiltration membrane assembly, a water production pipe and a backwash drainage pipe, and the water inlet of the ultrafiltration membrane assembly is connected to the water inlet system; the backwash system includes a backwash water tank and a siphon breaking bucket arranged in the backwash water tank, an overflow port is provided on the upper part of the backwash water tank, a siphon pipe is provided between the siphon breaking bucket and the backwash water tank, and the other end of the water production pipe is connected to the backwash water tank; the hydraulic automatic control system includes a siphon outer sleeve, a siphon inner sleeve, a siphon auxiliary pipe, and a siphon breaking pipe, which can effectively clean the membrane filaments, reduce the use of valves and pumps, reduce energy consumption, and reduce operating costs.

[0005] However, since the above technical solution only cleans the ultrafiltration membrane on a macro scale and cannot clean a certain ultrafiltration membrane tube separately, the cleaning effect is limited. At the same time, since the space inside the ultrafiltration membrane tube is small, only 0.9-2mm thick, impurities and dirt may be blocked during the forward and reverse flushing process and cannot be discharged in time, resulting in low cleaning efficiency of the ultrafiltration tube filaments. At the same time, conventional methods cannot control the cleaning efficiency of the ultrafiltration tube. Therefore, a device specifically for cleaning the ultrafiltration membrane tube is needed. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the above problems in the prior art, the present invention is proposed.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic cleaning device for ultrafiltration membrane, comprising an ultrafiltration mechanism, including a cylinder, a liquid infusion tube connected to the upper and lower ends of the cylinder, and an ultrafiltration tube arrayed in the cylinder, the ultrafiltration tube is made of an ultrafiltration membrane, gas field water enters the cylinder through the liquid infusion tube and is filtered through the ultrafiltration tube; The moving mechanism comprises a cleaning tube slidably arranged in the ultrafiltration tube and a roller movably arranged on the outer wall of the cleaning tube, the inner wall of the cleaning tube is filled with a cleaning liquid, and the cleaning tube rotates around an axis while the cleaning liquid enters the cleaning tube, the steering angle of the roller is controlled by the flow direction of the cleaning liquid, and the roller is driven to rotate by a micro waterproof motor; The cleaning mechanism comprises a drill bit and a water spray port arranged at one end of the cleaning pipe, and the water spray port is opened or closed according to the flow direction of the cleaning liquid.

[0009] As a preferred embodiment of the automatic cleaning device for ultrafiltration membrane of the present invention, a limiting sleeve is provided on the outer wall of the cleaning tube, one end of the limiting sleeve is movably engaged with the inner wall of the ultrafiltration tube, and a recoil port is opened on one end of the limiting sleeve located in the cleaning tube.

[0010] As a preferred embodiment of the automatic cleaning device for ultrafiltration membrane of the present invention, the outer wall of the cleaning tube is provided with a shell, the sliding sleeve of the outer wall of the cleaning tube is provided with a reciprocating sleeve, the reciprocating sleeve is coaxially arranged in the shell, and the outer wall of the reciprocating sleeve is provided with a control ring.

[0011] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, a slide cylinder is vertically arranged on the outer wall of the shell, a slide column is slidably arranged inside the slide cylinder, and the slide column penetrates one end of the outer wall of the slide cylinder and is connected to the roller.

[0012] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, the other end of the sliding column is provided with an angle, the end of the control ring away from the drill bit is provided with a direction-changing step, and the angle is slidably fitted on the outer wall of the direction-changing step; An induction disc is fixedly provided on the inner wall of the cleaning tube, a truncated cone groove is provided on one end of the induction disc close to the drill bit, a telescopic rod is axially slidably provided on the induction disc, a truncated cone is provided on one end of the telescopic rod close to the truncated cone groove, and the truncated cone is movably engaged with the truncated cone groove.

[0013] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, the induction disc end surface is provided with a circular array of backflow holes, a one-way valve is provided in the backflow hole, and a bracket is provided in a sliding sleeve at one end of the telescopic rod; A sliding groove is formed through the inner wall of the cleaning tube, and a connecting rod is vertically arranged on the telescopic rod. The connecting rod slides through the sliding groove and is fixedly connected to the control ring.

[0014] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, wherein: the outer wall of the reciprocating sleeve is provided with a first spiral groove, the inner wall of the control ring is fixed with a first slider, and the first slider slides freely along the inner wall of the first spiral groove; The inner wall of the shell is provided with a first circular ring and a second circular ring at the same time. The first circular ring and the second circular ring are coaxial and parallel to each other, and a transverse groove is vertically provided between the first circular ring and the second circular ring.

[0015] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, wherein: the outer wall of the reciprocating sleeve is symmetrically provided with a limit block, the limit block slides in the transverse groove along the axis direction of the shell, and the limit block rotates in the first ring and the second ring; A long rod is slidably provided on the inner wall of the reciprocating sleeve, and the long rod slides through the axis of the cleaning pipe. A rotating shaft is provided at the axis of the cleaning pipe, and the rotating shaft slides through the long rod through a flat key.

[0016] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, wherein: a partition is provided at one end of the housing close to the drill bit, a diagonal plate is rotatably provided inside the partition, and the rotating shaft rotates through the partition and is fixedly connected to the diagonal plate; A window is provided on the outer wall of the shell, a gate is slidably arranged in the window, and one end of the connecting rod slides through the shell and is connected to the gate.

[0017] As a preferred solution of the automatic cleaning device for ultrafiltration membrane of the present invention, wherein: the outer wall sliding sleeve of the shell is provided with an expansion ring, one end of the connecting rod is slidably connected to the gate and the shell and connected to the expansion ring; A hexagonal block is provided at the lower end of the drill bit, a swing rod is rotatably provided on the outer wall of the hexagonal block, six swing rods are provided in a circular array, and fan blades are rotatably connected between the swing rods; A transmission rod is rotatably arranged on the outer wall of the expansion ring, and a round tube is arranged at one end of the transmission rod away from the expansion ring. The round tube is slidably sleeved on the outer wall of the swing rod.

[0018] The beneficial effects of the present invention include: forward flushing and back flushing are achieved by controlling the flow direction of the cleaning liquid, while controlling the deflection angle of the rolling wheel, gradually stepping forward or retracting while the cleaning brush tube rotates, and the cleaning brush tube can also be cleaned and scraped by a drill bit while rotating, thereby improving the cleaning effect; the window and the partition can be automatically adjusted to open and close according to the direction of the cleaning liquid, thereby realizing the change of the flushing position of the inner wall of the ultrafiltration tube, facilitating the removal of dirt in dead corners, and improving the cleaning effect; the opening and closing of the fan blades can also be automatically adjusted with the direction of the cleaning liquid, thereby drilling and scraping impurities on the inner wall of the ultrafiltration tube, and sucking them away through the window, thereby preventing impurities from clogging the channel during the cleaning process, resulting in the inability of the cleaning liquid to flow, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is an overall schematic diagram of the automatic cleaning device for ultrafiltration membrane in the present invention.

[0020] Figure 2 This is a diagram showing the internal structure of the automatic cleaning device for ultrafiltration membrane in the present invention.

[0021] Figure 3 It is an enlarged schematic diagram of the fan blade area structure in the present invention.

[0022] Figure 4 It is a schematic cross-sectional view of the cleaning tube in the present invention.

[0023] Figure 5 This is an enlarged view of the induction disk area in the present invention.

[0024] Figure 6 It is a partially enlarged schematic diagram of the moving mechanism in the present invention.

[0025] Figure 7 It is a schematic diagram of the window in the present invention.

[0026] Figure 8 It is a schematic diagram of the partition and diagonal plate structure in the present invention.

[0027] Reference numerals: 100, cylinder; 101, infusion tube; 102, ultrafiltration tube; 200, cleaning pipe; 2001, limiting sleeve; 2002, recoil port; 2003, shell; 2004, reciprocating sleeve; 2005, control ring; 2006, slide cylinder; 2007, slide column; 2008, bevel; 2009, change-of-direction step; 201, roller; 2011, induction plate; 2012, truncated table groove; 2013, telescopic rod; 2014, truncated table; 2015, counterflow hole; 2016, bracket; 2017, slide groove; 2018, connecting rod; 2026, first spiral groove; 2027, first slider; 2028, first circular ring; 2029, second circular ring; 2031, transverse groove; 2032, limiting block; 2033, long rod; 2034, rotating shaft; 2035, partition; 2036, diagonal plate; 300, drill bit; 301, water nozzle; 3011, window; 3012, gate; 3021, expansion ring; 3022, hexagonal block; 3023, rocker arm; 3024, fan blade; 3025, transmission rod; 3026, round tube. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, provides an automatic cleaning device for ultrafiltration membrane, including an ultrafiltration mechanism, a moving mechanism and a cleaning mechanism, which controls the flow direction of the cleaning liquid to achieve forward flushing and back flushing, and at the same time controls the deflection angle of the roller 201, and gradually steps forward or retracts while the cleaning brush tube 200 rotates. While the cleaning brush tube 200 rotates, it can also perform cleaning and scraping through the drill bit 300 to improve the cleaning effect.

[0033] Specifically, it includes: an ultrafiltration mechanism, including a cylinder 100, a liquid infusion tube 101 connected to the upper and lower ends of the cylinder 100, and an ultrafiltration tube 102 arranged in an array in the cylinder 100, the ultrafiltration tube 102 is made of an ultrafiltration membrane, and the gas field water enters the cylinder 100 through the liquid infusion tube 101 and is filtered through the ultrafiltration tube 102; The moving mechanism includes a cleaning tube 200 slidably arranged in the ultrafiltration tube 102 and a roller 201 movably arranged on the outer wall of the cleaning tube 200. The inner wall of the cleaning tube 200 is filled with a cleaning liquid. When the cleaning liquid enters the cleaning tube 200, the cleaning tube 200 rotates around the axis. The steering angle of the roller 201 is controlled by the flow direction of the cleaning liquid. The roller 201 is driven to rotate by a micro waterproof motor. The cleaning mechanism comprises a drill bit 300 and a water spray port 301 arranged at one end of the cleaning pipe 200. The water spray port 301 is opened or closed according to the flow direction of the cleaning liquid.

[0034] Furthermore, a limiting sleeve 2001 is provided on the outer wall of the cleaning tube 200 , one end of the limiting sleeve 2001 is movably engaged with the inner wall of the ultrafiltration tube 102 , and a recoil port 2002 is provided on one end of the limiting sleeve 2001 located in the cleaning tube 200 .

[0035] Among them, the limiting sleeve 2001 is in the shape of a truncated cone, and the end with a smaller diameter is embedded in the inner wall of the ultrafiltration tube 102. The cleaning tube 200 rotates through the limiting sleeve 2001. A gap is left between the cleaning tube 200 and the inner wall of the limiting sleeve 2001 to facilitate the cleaning liquid to flow out during forward flushing and flow in during back flushing.

[0036] Preferably, the outer wall of the cleaning tube 200 is sleeved with a shell 2003, and the outer wall of the cleaning tube 200 is slidably sleeved with a reciprocating sleeve 2004, the reciprocating sleeve 2004 is coaxially arranged in the shell 2003, and the outer wall of the reciprocating sleeve 2004 is provided with a control ring 2005.

[0037] When the roller 201 rotates after being deflected at an angle, it drives the cleaning tube 200 to rotate as a whole and move forward or backward, and the rotation speed of the roller 201 changes synchronously with the flow rate of the cleaning liquid.

[0038] In this embodiment, the shell 2003 is fixedly embedded in the outer wall of the cleaning tube 200, and the shell 2003 is hollow inside. The drill bit 300 is a conical rough rubber block with scraping grooves on the surface and a water spraying port 301 in a circumferential array on the surface.

[0039] When the cleaning tube 200 rotates, the drill bit 300 rotates and scrapes the impurities in the ultrafiltration tube 102, and sprays the cleaning liquid through the water nozzle 301. The mixed liquid and impurities after cleaning flow out from the limiting sleeve 2001 through the gap between the cleaning tube 200 and the ultrafiltration tube 102, forming a positive flush.

[0040] More preferably, a slide cylinder 2006 is vertically disposed on the outer wall of the housing 2003 , a slide column 2007 is slidably disposed inside the slide cylinder 2006 , and the slide column 2007 penetrates through one end of the outer wall of the slide cylinder 2006 and is connected to the roller 201 .

[0041] Furthermore, a bevel 2008 is provided at the other end of the sliding column 2007 , and a direction-changing step 2009 is provided at one end of the control ring 2005 away from the drill bit 300 . The bevel 2008 is slidably fitted on the outer wall of the direction-changing step 2009 .

[0042] In this embodiment, a slider is provided on the outer wall of the slide column 2007, and a spiral groove is provided on the inner wall of the slide cylinder 2006. The slider slides on the inner wall of the slide cylinder 2006, so that the slide column 2007 is lifted and lowered while driving the roller 201 to rotate.

[0043] The direction-changing step 2009 is fixedly connected to the control ring 2005 , and the inclination angles of the direction-changing step 2009 and the bevel 2008 are both 45°, so that when the direction-changing step 2009 slides up and down along the reciprocating sleeve 2004 , the bevel 2008 is pushed to move up and down along the slide 2006 .

[0044] Preferably, an induction disc 2011 is fixedly provided on the inner wall of the cleaning tube 200, a truncated cone groove 2012 is provided at one end of the induction disc 2011 close to the drill bit 300, a telescopic rod 2013 is axially slidably provided on the induction disc 2011, a truncated cone 2014 is provided at one end of the telescopic rod 2013 close to the truncated cone groove 2012, and the truncated cone 2014 is movably engaged with the truncated cone groove 2012.

[0045] More preferably, a circular array of backflow holes 2015 is formed on the end surface of the induction disc 2011 , a one-way valve is provided in the backflow hole 2015 , and a bracket 2016 is slidably sleeved on one end of the telescopic rod 2013 .

[0046] The induction plate 2011 is cylindrical and sealed on the inner wall of the cleaning tube 200 , so that cleaning also needs to pass through the induction plate 2011 . There is a gap between the telescopic rod 2013 and the induction plate 2011 , and the telescopic rod 2013 slides along the axis direction of the induction plate 2011 through the bracket 2016 .

[0047] When the cleaning fluid flows from the direction of the drill bit 300 along the cleaning tube 200 toward the bracket 2016, it pushes the bottom surface of the truncated cone 2014 to move and engage with the truncated cone groove 2012, thereby blocking the water flow. The cleaning fluid can only flow out from the counterflow hole 2015 through the one-way valve. Similarly, when the cleaning fluid flows in the opposite direction, the truncated cone 2014 and the telescopic rod 2013 move outward, and the water flows out from the truncated cone groove 2012.

[0048] Preferably, a slide groove 2017 is penetrated through the inner wall of the cleaning tube 200 , and a connecting rod 2018 is vertically provided on the telescopic rod 2013 . The connecting rod 2018 slides through the slide groove 2017 and is fixedly connected to the control ring 2005 .

[0049] Among them, in this embodiment, the connecting rod 2018 is made of a flexible material and has elasticity, so that it can drive the control ring 2005 to move synchronously when the telescopic rod 2013 moves, and the roller 201 is driven by a miniature waterproof motor to rotate.

[0050] In summary, when in use, the motor is started to drive the water pump to rotate so as to pump the cleaning liquid into the cleaning pipe 200. At the same time, the motor drives the cleaning pipe 200 and the drill bit 300 to rotate and scrape the impurities in the ultrafiltration tube 102. At the same time, the cleaning liquid is sprayed through the water nozzle 301. The cleaning liquid is sprayed out of the ultrafiltration tube 102 from the injection port at the front end of the drill bit 300 for cleaning. The mixed liquid and impurities are discharged from the gap between the inner wall of the ultrafiltration tube 102 and the cleaning pipe 200. Then, the flow direction of the water pipe is controlled, and the cleaning liquid is injected from the inner wall of the limit sleeve 2001 and the cleaning pipe 200 for backwashing, thereby improving the cleaning quality and better removing stubborn impurities.

[0051] At the same time, in the forward flushing state, the roller 201 rotates 45° counterclockwise from the vertical axis direction of the cleaning brush tube 200, so that the cleaning brush tube 200 itself rotates and moves forward under the drive of the micro waterproof motor, so as to realize the rotation of the drill bit 300 to remove impurities. While removing impurities, the cleaning brush tube 200 gradually moves forward. When backflushing is performed, the flow direction of the cleaning liquid changes. When the cleaning liquid flows from the direction of the drill bit 300 along the cleaning brush tube 200 to the direction of the bracket 2016, the bottom surface of the truncated table 2014 is pushed to move and fit into the truncated table groove 2012, so as to achieve the purpose of cleaning the drill bit 300. When the water flow is blocked, the cleaning liquid can only flow out from the counterflow hole 2015 through the one-way valve. At this time, the flow direction of the cleaning liquid changes, driving the round table 2014, the telescopic rod 2013 and the connecting rod 2018 to move in the opposite direction, thereby driving the control ring 2005 to move, and at the same time the changing step 2009 moves, driving the bevel 2008 to decrease, so that when the sliding column 2007 rises and falls, it drives it to rotate 90° clockwise, thereby changing the angle of the roller 201 and changing the moving direction, thereby realizing the automatic retraction and exit of the cleaning tube 200.

[0052] Example 2

[0053] Reference Figure 1 to Figure 8 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the window 3011 and the partition 2035 can be automatically adjusted to open and close according to the direction of the cleaning liquid, thereby changing the flushing position of the inner wall of the ultrafiltration tube 102, making it easier to remove dirt in dead corners and improving the cleaning effect.

[0054] Specifically, a first spiral groove 2026 is formed on the outer wall of the reciprocating sleeve 2004 , and a first slider 2027 is fixedly provided on the inner wall of the control ring 2005 . The first slider 2027 can slide freely along the inner wall of the first spiral groove 2026 .

[0055] Preferably, the inner wall of the shell 2003 is provided with a first circular ring 2028 and a second circular ring 2029 , the first circular ring 2028 and the second circular ring 2029 are coaxial and parallel, and a transverse groove 2031 is vertically provided between the first circular ring 2028 and the second circular ring 2029 .

[0056] Furthermore, the outer wall of the reciprocating sleeve 2004 is symmetrically provided with limit blocks 2032 , which slide in the transverse groove 2031 along the axial direction of the shell 2003 , and the limit blocks 2032 rotate in the first ring 2028 and the second ring 2029 .

[0057] Among them, when the control ring 2005 slides along the outer wall of the reciprocating sleeve 2004, the first slider 2027 slides in the first spiral groove 2026 and drives the reciprocating sleeve 2004 to move or rotate. When the limit block 2032 slides in the transverse groove 2031, the reciprocating sleeve 2004 slides following the first slider 2027. When the limit block 2032 rotates in the first circular ring 2028 and the second circular ring 2029, the reciprocating sleeve 2004 and the first slider 2027 rotate relative to each other, so that the reciprocating sleeve 2004 rotates.

[0058] There are two limit blocks 2032 symmetrically arranged on both sides of the outer wall of the reciprocating sleeve 2004 , and the limit blocks 2032 are slidably arranged in the transverse groove 2031 .

[0059] Preferably, a long rod 2033 is slidably provided on the inner wall of the reciprocating sleeve 2004, and the long rod 2033 slides through the axis of the cleaning tube 200, and a rotating shaft 2034 is provided at the axis of the cleaning tube 200, and the rotating shaft 2034 slides through the long rod 2033 through a flat key.

[0060] Furthermore, a partition plate 2035 is provided at one end of the shell 2003 close to the drill bit 300 , and a diagonal plate 2036 is rotatably provided inside the partition plate 2035 . The rotating shaft 2034 rotates through the partition plate 2035 and is fixedly connected to the diagonal plate 2036 .

[0061] Among them, the long rod 2033 and the reciprocating sleeve 2004 are slidably connected by a flat key, so that the two can rotate synchronously but the long rod 2033 will not slide with the reciprocating sleeve 2004. At the same time, the rotating shaft 2034 only rotates with the long rod 2033 and does not move with it. The partition 2035 is two centrally symmetrical sectors. The interior of the partition 2035 is hollow. The diagonal plate 2036 is driven to rotate by the rotating shaft 2034 and is arranged on the inner wall of the partition 2035. The diagonal plate 2036 is also two centrally symmetrical sectors. The diagonal plate 2036 and the partition 2035 are interlocked with each other to form a complete circle and close the shell 2003.

[0062] More preferably, a window 3011 is opened on the outer wall of the shell 2003, a gate 3012 is slidably provided in the window 3011, and one end of the connecting rod 2018 slides through the shell 2003 and is connected to the gate 3012.

[0063] Furthermore, the window 3011 is an arc-shaped area that penetrates the outer wall of the shell 2003, the arc angle is 60°, and two windows 3011 are symmetrically provided to improve the adsorption efficiency of the mixed liquid. During backflushing, the shell 2003 rotates and the outer wall of the ultrafiltration tube 102 is evenly flushed at the same time, and the dead corner area of ​​forward flushing is cleaned, thereby improving the cleaning effect.

[0064] Among them, a storage groove is opened on the inner wall of the window 3011, and the connecting rod 2018 plays a connecting role in this embodiment, so that the gate 3012 and the control ring 2005 move synchronously, and the gate 3012 slides in the storage groove driven by the connecting rod 2018.

[0065] More preferably, when the gate 3012 completely slides out of the storage groove, it can be spliced ​​with the window 3011 to seal this section of the shell 2003. The switch states between the window 3011 and the partition 2035 are opposite, thereby achieving adjustment of the water outlet position.

[0066] In summary, during use, when forward flushing is performed, the cleaning fluid flows from the cleaning tube 200 to the drill bit 300 and is cleaned through the water nozzle 301. At this time, driven by the cleaning fluid, the control ring 2005 slides toward the drill bit 300, and slides in the first spiral groove 2026 through the first slider 2027, driving the reciprocating sleeve 2004 to first slide axially along the transverse groove 2031, and then rotate when moving to the second circular ring 2029. Similarly, when back flushing is performed, the direction of the cleaning fluid and the moving direction of the control ring 2005 change, and the reciprocating sleeve 2004 first slides axially along the transverse groove 2031, and then moves to the first circular ring 2028 and rotates.

[0067] At the same time, when the control ring 2005 drives the reciprocating sleeve 2004 to move toward the drill bit 300, the connecting rod 2018 drives the gate 3012 to slide out of the storage groove and engage with the window 3011 for sealing. At the same time, when the reciprocating sleeve 2004 rotates in the second ring 2029, the long rod 2033 drives the rotating shaft 2034 to rotate, and the rotating shaft 2034 drives the diagonal plate 2036 to rotate to the inside of the partition 2035, so that the cleaning fluid can flow to the drill bit 300 through the partition 2035. When backflushing, the window 3011 is opened and the partition 2035 is closed, changing the flushing direction, removing dirt in dead corners, and improving the cleaning effect.

[0068] Example 3

[0069] Reference Figure 1-Figure 8 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the opening and closing of the fan blade 3024 will also be automatically adjusted with the direction of the cleaning liquid, so as to drill holes and scrape off the impurities on the inner wall of the ultrafiltration tube 102, and absorb them through the window 3011, thereby preventing impurities from clogging the channel during the cleaning process, resulting in the inability of the cleaning liquid to flow, thereby improving the cleaning effect.

[0070] Specifically, an expansion ring 3021 is slidably sleeved on the outer wall of the shell 2003 , and one end of the connecting rod 2018 is slidably connected to the gate 3012 and the shell 2003 and connected to the expansion ring 3021 .

[0071] The expansion ring 3021 is a circular ring sleeve, the connecting rod 2018 is fixedly connected to the expansion ring 3021, and when the control ring 2005 moves, the connecting rod 2018 and the expansion ring 3021 are driven to move synchronously.

[0072] Furthermore, a hexagonal block 3022 is provided at the lower end of the drill bit 300 , and a swing rod 3023 is rotatably provided on the outer wall of the hexagonal block 3022 . There are six swing rods 3023 in a circular array, and fan blades 3024 are rotatably connected between each swing rod 3023 .

[0073] There are also six fan blades 3024, and rubber bristles are arranged on the outer wall of the fan blades 3024. When the six fan blades 3024 are fully unfolded, they are assembled into a complete circle and fit against the inner wall of the ultrafiltration tube 102 to scrape off impurities on the inner wall.

[0074] Preferably, a transmission rod 3025 is rotatably provided on the outer wall of the expansion ring 3021 , and a round tube 3026 is provided on one end of the transmission rod 3025 away from the expansion ring 3021 , and the round tube 3026 is slidably sleeved on the outer wall of the swing rod 3023 .

[0075] There are three transmission rods 3025 and circular tubes 3026 in total, which are respectively slidably connected with the spaced-apart swing rods 3023 , so that when the exhibition ring 3021 moves up and down, the transmission rods 3025 and circular tubes 3026 drive the swing rods 3023 to swing up and down, thereby realizing the expansion and storage of the fan blades 3024 .

[0076] Among them, the fan blades 3024 are in a conical shape when they are stored, which makes it convenient for the cleaning tube 200 to rotate forward to drill holes, drill holes in solid sediments, reduce forward resistance, and improve cleaning efficiency; when the fan blades 3024 are unfolded, the fan blades 3024 fit against the inner wall of the ultrafiltration tube 102. During the retreat of the fan blades 3024, the stubborn substances remaining on the inner wall and the dead corners are scraped again and sucked away through the window 3011 to prevent impurities from clogging the channel during the cleaning process, causing the water to be unable to flow.

[0077] In summary, when performing forward flushing, the fan blades 3024 are retracted, and the drill bit 300 drives the fan blades 3024 to rotate forward, drill holes in the solid filter screen and break it up, and flush it out with the cleaning fluid. When performing backflushing, the fan blades 3024 are unfolded, and the drill bit 300 and the fan blades 3024 retreat, and the fan blades 3024 and the inner wall of the ultrafiltration tube 102 are scraped to remove stubborn residues and dead corners, and the mixed liquid is sucked away through the window 3011 to prevent impurities from clogging the channel during the cleaning process, causing the water to be unable to flow.

[0078] At the same time, when the forward flushing process encounters a jam and is unable to move forward, the forward flushing and reverse flushing are repeatedly switched, and the impurities in the area are crushed and removed by drilling holes when the fan blades 3024 are stored and scraping when they are unfolded, and the mixed liquid is sucked away in time through the window 3011 to prevent blockage and improve the cleaning efficiency.

[0079] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0080] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0081] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic cleaning device for ultrafiltration membrane, characterized in that: include: An ultrafiltration mechanism comprises a cylinder (100), a liquid infusion tube (101) connected to the upper and lower ends of the cylinder (100), and ultrafiltration tubes (102) arranged in an array in the cylinder (100), wherein the ultrafiltration tubes (102) are made of ultrafiltration membranes, and gas field water enters the cylinder (100) through the liquid infusion tube (101) and is filtered through the ultrafiltration tubes (102); The moving mechanism comprises a cleaning tube (200) slidably arranged in the ultrafiltration tube (102) and a roller (201) movably arranged on the outer wall of the cleaning tube (200); the inner wall of the cleaning tube (200) is filled with cleaning liquid; when the cleaning liquid enters the cleaning tube (200), the cleaning tube (200) rotates around an axis; the turning angle of the roller (201) is controlled by the flow direction of the cleaning liquid; and the roller (201) is driven to rotate by a micro waterproof motor; The cleaning mechanism comprises a drill bit (300) and a water spray port (301) arranged at one end of the cleaning pipe (200); the water spray port (301) is opened or closed according to the flow direction of the cleaning liquid.

2. The automatic cleaning device for ultrafiltration membrane according to claim 1, characterized in that: The outer wall of the cleaning tube (200) is provided with a limiting sleeve (2001), one end of the limiting sleeve (2001) is movably engaged with the inner wall of the ultrafiltration tube (102), and one end of the limiting sleeve (2001) located inside the cleaning tube (200) is provided with a recoil port (2002).

3. The automatic cleaning device for ultrafiltration membrane according to claim 2, characterized in that: The outer wall of the cleaning tube (200) is provided with a shell (2003), the outer wall of the cleaning tube (200) is slidably provided with a reciprocating sleeve (2004), the reciprocating sleeve (2004) is coaxially arranged in the shell (2003), and the outer wall of the reciprocating sleeve (2004) is provided with a control ring (2005).

4. The automatic cleaning device for ultrafiltration membrane according to claim 3, characterized in that: A slide cylinder (2006) is vertically arranged on the outer wall of the housing (2003), a slide column (2007) is slidably arranged inside the slide cylinder (2006), and one end of the slide column (2007) penetrates through the outer wall of the slide cylinder (2006) and is connected to the roller (201).

5. The automatic cleaning device for ultrafiltration membrane according to claim 4, characterized in that: The other end of the sliding column (2007) is provided with an angled angle (2008), and the end of the control ring (2005) away from the drill bit (300) is provided with a direction-changing step (2009), and the angled angle (2008) is slidably fitted on the outer wall of the direction-changing step (2009); An induction disc (2011) is fixedly provided on the inner wall of the cleaning tube (200); a truncated cone groove (2012) is provided at one end of the induction disc (2011) close to the drill bit (300); a telescopic rod (2013) is axially slidably provided on the induction disc (2011); a truncated cone (2014) is provided at one end of the telescopic rod (2013) close to the truncated cone groove (2012); and the truncated cone (2014) is movably engaged with the truncated cone groove (2012).

6. The automatic cleaning device for ultrafiltration membrane according to claim 5, characterized in that: The end surface of the induction disc (2011) is provided with a circular array of backflow holes (2015), a one-way valve is provided in the backflow hole (2015), and a bracket (2016) is provided in a sliding sleeve at one end of the telescopic rod (2013); A slide groove (2017) is formed through the inner wall of the cleaning tube (200), a connecting rod (2018) is vertically provided on the telescopic rod (2013), and the connecting rod (2018) slides through the slide groove (2017) and is fixedly connected to the control ring (2005).

7. The automatic cleaning device for ultrafiltration membrane according to claim 6, characterized in that: The outer wall of the reciprocating sleeve (2004) is provided with a first spiral groove (2026), the inner wall of the control ring (2005) is fixedly provided with a first slider (2027), and the first slider (2027) slides freely along the inner wall of the first spiral groove (2026); The inner wall of the shell (2003) is provided with a first circular ring (2028) and a second circular ring (2029), the first circular ring (2028) and the second circular ring (2029) are coaxial and arranged in parallel, and a transverse groove (2031) is vertically provided between the first circular ring (2028) and the second circular ring (2029).

8. The automatic cleaning device for ultrafiltration membrane according to claim 7, characterized in that: The outer wall of the reciprocating sleeve (2004) is also symmetrically provided with a limit block (2032), the limit block (2032) slides in the transverse groove (2031) along the axial direction of the shell (2003), and the limit block (2032) rotates in the first circular ring (2028) and the second circular ring (2029); A long rod (2033) is slidably provided on the inner wall of the reciprocating sleeve (2004), and the long rod (2033) slides through the axis of the cleaning tube (200). A rotating shaft (2034) is provided at the axis of the cleaning tube (200), and the rotating shaft (2034) slides through the long rod (2033) via a flat key.

9. The automatic cleaning device for ultrafiltration membrane according to claim 8, characterized in that: A partition plate (2035) is provided at one end of the housing (2003) close to the drill bit (300), a diagonal plate (2036) is rotatably provided inside the partition plate (2035), and the rotating shaft (2034) rotatably penetrates the partition plate (2035) and is fixedly connected to the diagonal plate (2036); A window (3011) is provided on the outer wall of the shell (2003), a gate (3012) is slidably provided in the window (3011), and one end of the connecting rod (2018) slides through the shell (2003) and is connected to the gate (3012).

10. The automatic cleaning device for ultrafiltration membrane according to claim 9, characterized in that: The outer wall sliding sleeve of the shell (2003) is provided with an expansion ring (3021), and one end of the connecting rod (2018) is slidably connected to the gate (3012) and the shell (2003) and is connected to the expansion ring (3021); A hexagonal block (3022) is provided at the lower end of the drill bit (300), a swing rod (3023) is rotatably provided on the outer wall of the hexagonal block (3022), six swing rods (3023) are provided in a circular array, and fan blades (3024) are rotatably connected between the swing rods (3023); A transmission rod (3025) is rotatably provided on the outer wall of the expansion ring (3021), and a round tube (3026) is provided on one end of the transmission rod (3025) away from the expansion ring (3021), and the round tube (3026) is slidably sleeved on the outer wall of the swing rod (3023).

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