An industrial wastewater treatment device

Abstract

The application discloses an industrial wastewater treatment device and relates to the technical field of wastewater treatment equipment, which comprises a filter body, a filter assembly is arranged in the filter body, the filter assembly comprises a filter cylinder, a moving assembly is slidably connected to the filter cylinder, a front mounting shell is fixedly arranged at the front end of the filter cylinder, two groups of trigger assemblies are arranged in the front mounting shell, two groups of air jet assemblies are arranged on the inner wall of the filter cylinder close to the rear end, a rear mounting shell is fixedly connected to the rear end of the filter cylinder, and a driving assembly is fixedly arranged on the outer wall of the filter cylinder. The pressure difference between the two sides of the microfiltration membrane is increased to trigger the water flow to push the moving ring to move backward, the position of the water stop plate is switched under the meshing effect of the ratchet block and the transmission belt, the high-pressure airflow is released to form the bubble disturbance in cooperation with the air jet assembly, the reverse flushing of the front end face of the microfiltration membrane and the gas-liquid combined stripping of impurities are realized, the cleaning efficiency is remarkably improved, the permeability of the microfiltration membrane is maintained, and the replacement period is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment equipment, in particular to an industrial sewage treatment device. BACKGROUND

[0002] At present, the sewage discharged in industrial production is various in type and complex in water quality composition, often containing a large amount of suspended solids, colloidal particles and part of soluble organic pollutants. In order to meet the discharge standard or realize water resource reuse, the sewage usually needs to be subjected to solid-liquid separation before entering the subsequent treatment link. The existing industrial sewage filtration equipment often uses filter membrane or filter screen for physical interception to filter out the suspended impurities in water. However, after such device is continuously operated for a period of time, impurities are easily accumulated on the surface of the filter membrane or filter screen, causing the water flow flux to decrease and the pressure difference to increase, which not only affects the filtration effect, but also increases the energy consumption. In order to maintain normal operation, manual cleaning or replacement of filter membrane is often required, which not only increases the maintenance cost, but also easily causes production interruption.

[0003] In view of the problem of filter membrane blockage, some devices increase the backwashing function to remove the attached substances by means of reverse water flow flushing. However, the traditional backwashing structure generally has problems such as insufficient flushing force, incomplete impurity stripping and manual control during the cleaning process, which is difficult to adapt to the long-term treatment demand of high-suspended solids or high-viscosity sewage. At the same time, some devices cannot completely cut off the water inlet during backwashing, which easily causes the flushing water to be polluted again, thereby reducing the cleaning effect.

[0004] Therefore, an industrial sewage treatment device capable of automatically monitoring the pressure difference during sewage filtration, automatically switching the water inlet and outlet channels, and realizing efficient cleaning by means of reverse water flow and air flow flushing is needed, so as to prolong the service life of the filter membrane, reduce the frequency of manual maintenance, and ensure that the device can be stably operated for a long time and maintain high treatment efficiency. SUMMARY

[0005] The present application aims to provide an industrial sewage treatment device to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a filter body is provided, a filter assembly is installed inside the filter body, the filter assembly comprises a filter cartridge, a moving assembly is slidably connected inside the filter cartridge, a front mounting shell is fixedly installed at the front end of the filter cartridge, two groups of trigger assemblies are installed inside the front mounting shell, two groups of air jet assemblies are installed on the inner wall of the filter cartridge close to the rear end, a rear mounting shell is fixedly connected to the rear end of the filter cartridge, and a driving assembly is fixedly installed on the outer wall of the filter cartridge. The filter assembly can automatically backwash the filter membrane by cooperation of the moving assembly and the air jet assembly during operation to remove the attached impurities and restore the filtration flux, and is suitable for liquid solid-liquid separation treatment.

[0007] As a further scheme of the present application, the moving assembly comprises a moving ring, the outer wall of the moving ring is in sliding connection with the inner wall of the filter cylinder, the inner ring wall of the moving ring is fixedly installed with a microfiltration membrane, the front end surface of the moving ring is rotationally connected with a rotating shaft, the outer wall of the rotating shaft is fixedly installed with a rotating plate, the outer wall of the rotating plate is provided with a ratchet block, and the end surface of the rotating plate is provided with an adjusting rod.

[0008] As a further scheme of the present application, the outer wall of the mounting front shell is provided with a water inlet and a water outlet, the water inlet and the water outlet are fixedly installed with water pipes, and the water inlet and the water outlet are respectively extended with a water inlet groove and a water outlet groove in the inner wall of the mounting front shell.

[0009] As a further scheme of the present application, the trigger assembly comprises a water stop plate, the left and right ends of the water stop plate are coaxially fixedly connected with vortex springs, the ends of the two vortex springs are jointly installed with a driving frame, the front end surface of the driving frame is fixedly connected with a connecting rope, and the end of the connecting rope away from the driving frame is fixedly connected with the front end surface of the moving ring.

[0010] As a further scheme of the present application, the air injection assembly comprises a corrugated rubber sleeve, the top surface of the corrugated rubber sleeve is fixedly installed with an air inlet cylinder after penetrating through the side wall of the filter cylinder, the inner wall of the air inlet cylinder is in sliding connection with a first ball valve, and the outer wall of the first ball valve is fixedly connected with a second spring.

[0011] As a further scheme of the present application, the bottom surface of the corrugated rubber sleeve is fixedly connected with an air injection pipe, the inner wall of the air injection pipe is in sliding connection with a second ball valve, and the outer wall of the second ball valve is fixedly connected with a third spring.

[0012] As a further scheme of the present application, the driving assembly comprises a mounting box, and the inner wall of the mounting box is equidistantly rotationally connected with a plurality of rotating rollers.

[0013] As a further scheme of the present application, the outer walls of the rotating rollers are jointly sleeved with a transmission belt, and the rotating shaft of one of the rotating rollers is coaxially fixedly connected with a servo motor after penetrating through the side wall of the mounting box.

[0014] As a further scheme of the present application, the inner wall of the mounting box close to the filter cylinder is fixedly installed with a guide rail, and the size of the inner wall of the guide rail is matched with the size of the outer wall of the adjusting rod.

[0015] As a further scheme of the present application, the top surface of the guide rail close to the rear end of the filter cylinder is provided with a sliding rod, the outer wall of the sliding rod is in sliding connection with an inclined guide block, and the outer wall of the sliding rod is sleeved with a fourth spring.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The application in the process of use, through the water inlet and installation front shell between the setting water inlet tank, and using vortex spring control stop board in the initial state to keep the water inlet end open, the water outlet end closed, realized the sewage in the front end of the filter cylinder after along the microfiltration membrane sufficient filtration, avoid not filtered sewage directly discharge, ensure the stability of the initial stage of water quality, and prolong the clean use cycle of microfiltration membrane;

[0018] 2. The application in the process of use, through the use of microfiltration membrane both sides pressure difference rise trigger water flow to push the moving ring to move back, and under the meshing effect of ratchet block and transmission belt, switch the position of stop board, at the same time cooperate with the release of high pressure gas flow of air jet assembly to form bubble disturbance, realized the reverse washing and gas-liquid combined stripping of the front end surface of microfiltration membrane, significantly improved the cleaning efficiency, maintained the permeability of microfiltration membrane, and delayed the replacement cycle;

[0019] 3. The application in the process of use, through the adjusting rod along the guide rail into the return rail and drive the torsional spring to release, make the ratchet block and transmission belt disengage, at the same time under the action of first spring and vortex spring, push the moving ring and stop board to reset, and through the air jet assembly to recharge, realized the automatic cycle of filtration-backwashing-reset, without manual intervention, significantly reduced the operation and maintenance cost and improved the continuity and efficiency of sewage treatment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the application;

[0021] Figure 2 It is the overall structure explosion drawing of the application;

[0022] Figure 3 It is the filter assembly structure schematic diagram of the application;

[0023] Figure 4 It is the filter assembly structure explosion drawing of the application;

[0024] Figure 5 It is the filter cylinder structure parts drawing of the application;

[0025] Figure 6 It is the moving assembly structure explosion drawing of the application;

[0026] Figure 7 It is Figure 6 The structure enlarged view of A of the application;

[0027] Figure 8 It is the installation front shell structure parts drawing of the application;

[0028] Figure 9 It is the trigger assembly structure explosion drawing of the application;

[0029] Figure 10Structure exploded view of the jet assembly of the present application;

[0030] Figure 11 Structure schematic view of the drive assembly of the present application;

[0031] Figure 12 Structure exploded view of the drive assembly of the present application;

[0032] Figure 13 Structure sectional view of the filter assembly of the present application Figure 1 ;

[0033] Figure 14 Structure enlarged view of B of the present application; Figure 13

[0034] Structure enlarged view of C of the present application; Figure 15 Figure 13 Structure sectional view of the filter assembly of the present application

[0035] ; Figure 16 Figure 2 Structure enlarged view of D of the present application.

[0036] Figure 17 Figure: Figure 16

[0037] Figure:

[0038] 1. Filter body;

[0039] 2. Filter assembly; 21. Filter cartridge; 211. Slide rod; 212. Mounting plate; 213. Mounting port;

[0040] 3. Moving assembly; 31. Moving ring; 311. Microfiltration membrane; 312. Mounting arm; 32. First spring; 33. Rotation shaft; 331. Rotation plate; 332. Ratchet block; 333. Adjusting rod; 34. Torsion spring;

[0041] 4. Front mounting shell; 41. Water inlet; 42. Water outlet; 43. Water inlet groove; 44. Water outlet groove;

[0042] 5. Water delivery pipe;

[0043] 6. Trigger assembly; 61. Water stop plate; 62. Mounting shell; 63. Vortex spring; 64. Drive frame; 641. Connecting plate; 642. Slide plate; 65. Connecting rope;

[0044] 7. Jet assembly; 71. Corrugated rubber sleeve; 72. Air inlet cylinder; 73. First ball valve; 74. Second spring; 75. Jet pipe; 76. Second ball valve; 77. Third spring;

[0045] 8. Rear mounting shell; 81. Water outlet pipe;

[0046] ​​9, drive assembly; 91, mounting box; 92, rotating roller; 93, transmission belt; 94, servo motor; 95, guide rail; 951, sliding rod; 96, inclined guide block; 97, fourth spring. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0048] Embodiment 1: see Figures 1-7 An industrial wastewater treatment device, comprising a filter body 1, a filter assembly 2 is installed inside the filter body 1, specifically, the filter assembly 2 is used for the last step of wastewater treatment, after aeration and sedimentation, the wastewater inside the filter body 1 finally enters the filter assembly 2 for further removal of impurities in the wastewater, the filter assembly 2 comprises a filter cylinder 21, a moving assembly 3 is slidably connected inside the filter cylinder 21, a mounting front shell 4 is fixedly installed at the front end of the filter cylinder 21, specifically, the mounting front shell 4 is coaxially fixedly connected with the filter cylinder 21 through bolts, two groups of trigger assemblies 6 are installed inside the mounting front shell 4, two groups of air injection assemblies 7 are installed on the inner wall of the filter cylinder 21 close to the rear end, specifically, two mounting plates 212 are welded and fixed on the inner wall of the filter cylinder 21, the rear end faces of the two groups of air injection assemblies 7 are fixedly connected with the front end faces of the two mounting plates 212, respectively, an installation rear shell 8 is fixedly connected with the rear end of the filter cylinder 21, specifically, the installation rear shell 8 is coaxially fixedly connected with the filter cylinder 21 through bolts, a water outlet pipe 81 is fixedly connected with the rear end face of the installation rear shell 8, the outlet of the water outlet pipe 81 is upward and the height is higher than that of the filter cylinder 21, so as to ensure that the wastewater fills the filter cylinder 21, a drive assembly 9 is fixedly installed on the outer wall of the filter cylinder 21, specifically, an installation opening 213 is formed on the outer wall of the filter assembly 2, the drive assembly 9 is fixedly connected with the installation opening 213 through bolts, the drive assembly 9 is in communication with the inside of the filter cylinder 21, the filter assembly 2 can automatically backwash the filter membrane by cooperation of the moving assembly 3 and the air injection assembly 7 during operation, so as to remove the attached impurities and restore the filtration flux, and is suitable for liquid-solid separation treatment.

[0049] see Figures 4-7The moving assembly 3 comprises a moving ring 31, the outer wall of the moving ring 31 is in sliding connection with the inner wall of the filter cylinder 21, specifically, two sliding rods 211 are fixedly installed on the inner wall of the filter cylinder 21, front and rear through sliding holes are formed on the front end face of the moving ring 31, the outer walls of the two sliding holes are respectively in sliding connection with the outer walls of the two sliding rods 211, the outer walls of the two sliding rods 211 are all sleeved with first springs 32, the front and rear ends of the two sliding rods 211 are both provided with blocking plates, the blocking plates are used for preventing the moving ring 31 from sliding off, the rear ends of the two first springs 32 are both in abutment with the blocking plates, the ends of the two first springs 32, which are away from the blocking plates, are both in abutment with the rear end face of the moving ring 31, the two first springs 32 have a supporting effect on the moving ring 31, a microfiltration membrane 311 is fixedly installed on the inner ring wall of the moving ring 31, specifically, the material of the microfiltration membrane 311 is polyvinylidene fluoride, the polyvinylidene fluoride has high mechanical strength and good corrosion resistance, a rotating shaft 33 is rotatably connected to the front end face of the moving ring 31, specifically, the rear end face of the moving ring 31 is provided with an installation arm 312, the rotating shaft 33 is rotatably connected to the end portion of the installation arm 312, the top and bottom ends of the rotating shaft 33 are both provided with blocking rings, torsional springs 34 are installed between the outer walls of the blocking rings and the installation arm 312, the torsional springs 34 provide torsional force for the rotating shaft 33, a rotating plate 331 is fixedly installed on the outer wall of the rotating shaft 33, the outer wall of the rotating plate 331 is provided with a ratchet block 332, and an adjusting rod 333 is arranged on the top face of the end portion of the rotating plate 331.

[0050] Embodiment 2: please refer to Figures 4-9 , Figure 13 An industrial wastewater treatment device, which is different from the device in Embodiment 1 in that a water inlet 41 and a water outlet 42 are formed on the outer wall of the front shell 4, the water inlet 41 and the water outlet 42 are both fixedly installed with water conveying pipes 5, specifically, the water inlet 41 and the water outlet 42 are both fixedly connected with the two water conveying pipes 5 through bolts, the two water conveying pipes 5 are respectively used for conveying sewage and discharging sewage, and the water inlet 41 and the water outlet 42 are respectively provided with a water inlet groove 43 and a water outlet groove 44 which are extended on the inner wall of the front shell 4.

[0051] Please refer to Figure 9 The triggering assembly 6 comprises water stopping plates 61, specifically, the two water stopping plates 61 are rotatably connected between the water inlet groove 43 and the water outlet groove 44, a plurality of mud settling grooves are equidistantly formed on the top and bottom end faces of the water stopping plates 61, vortex springs 63 are coaxially and fixedly connected to the left and right ends of the water stopping plates 61, specifically, please refer to Figure 9 、 Figure 13The left and right end surfaces of the water inlet groove 43 and the water outlet groove 44 are fixedly provided with installation shells 62, and a plurality of vortex springs 63 are rotatably installed in the inner walls of the installation shells 62. The inner walls of the installation shells 62 abut against the outer walls of the vortex springs 63. The vortex springs 63 are compressed in the installation shells 62, so that the vortex springs 63 have a torsional force on the water stop plate 61. The end portions of the vortex springs 63 are provided with blocking plates, which are used to prevent the end portions of the vortex springs 63 from being retracted into the installation shells 62. The water stop plate 61 rotatably connected to the inner wall of the water inlet groove 43 is kept horizontal with the inner wall of the water inlet groove 43, so that the water inlet 41 keeps in communication with the inside of the installation front shell 4. The water stop plate 61 rotatably connected to the inner wall of the water outlet groove 44 is kept perpendicular to the inner wall of the water outlet groove 44, so that the water outlet 42 is isolated from the inside space of the installation front shell 4. The end portions of the two vortex springs 63 are jointly provided with a driving frame 64. The front end surface of the driving frame 64 is fixedly connected with a connecting rope 65. The end of the connecting rope 65 away from the driving frame 64 is fixedly connected to the front end surface of the moving ring 31. Specifically, the rear end surface of the driving frame 64 is welded with a connecting plate 641. The end portion of the connecting rope 65 is rotatably connected to the end portion of the connecting plate 641. The bottom surface of the driving frame 64 is welded with two sliding plates 642. The left and right side walls of the water inlet groove 43 and the water outlet groove 44 are provided with horizontal guide rails. The two sliding plates 642 are slidably inserted into the two horizontal guide rails. The sliding plates 642 can ensure that the two driving frames 64 are horizontally and slidably connected to the outer walls of the water inlet groove 43 and the water outlet groove 44.

[0052] Example 3: see Figures 4-17The industrial wastewater treatment device is different from example 1 in that the air injection assembly 7 comprises a corrugated rubber sleeve 71. Specifically, the corrugated rubber sleeves 71 of the two air injection assemblies 7 are fixedly installed on the front end faces of the two mounting plates 212, respectively. The corrugated rubber sleeve 71 is made of polytetrafluoroethylene. The polytetrafluoroethylene has the characteristics of strong acid and alkali resistance, organic solvent resistance, large temperature adaptation range, and extremely strong corrosion resistance. The top surface of the corrugated rubber sleeve 71 is fixedly installed with an air inlet cylinder 72 after penetrating through the side wall of the filter cylinder 21. The inner wall of the air inlet cylinder 72 is slidably connected with a first ball valve 73. The outer wall of the first ball valve 73 is fixedly connected with a second spring 74. Specifically, the bottom surface of the air inlet cylinder 72 is welded with an air inlet pipe. The bottom end of the air inlet pipe is in communication with the inside of the corrugated rubber sleeve 71. The inner wall of the air inlet pipe is provided with an abutment ring near the top end. The inner wall of the air inlet pipe is provided with a blocking ring near the bottom end. The outer wall of the first ball valve 73 abuts against the abutment ring. One end of the second spring 74, which is away from the first ball valve 73, is fixedly connected with the top end surface of the blocking ring. The bottom surface of the corrugated rubber sleeve 71 is fixedly connected with an air injection pipe 75. The inner wall of the air injection pipe 75 is slidably connected with a second ball valve 76. The outer wall of the second ball valve 76 is fixedly connected with a third spring 77. Specifically, the top surface of the air injection pipe 75 is welded with an air outlet pipe. The bottom end of the air outlet pipe is in communication with the inside of the corrugated rubber sleeve 71. The inner wall of the air outlet pipe is provided with an abutment ring near the top end. The inner wall of the air outlet pipe is provided with a blocking ring near the bottom end. The outer wall of the second ball valve 76 abuts against the abutment ring. One end of the third spring 77, which is away from the second ball valve 76, is fixedly connected with the top end surface of the blocking ring.

[0053] Please refer to Figures 4-17, the driving assembly 9 comprises a mounting box 91, specifically, the mounting box 91 is fixedly installed on the outer wall of the mounting port 213 through bolts, a plurality of rotating rollers 92 are rotationally connected to the inner wall of the mounting box 91 at equal intervals, and a transmission belt 93 is jointly sleeved with the outer walls of the plurality of rotating rollers 92, specifically, a plurality of ratchet bars are installed on the outer wall of the transmission belt 93 at equal intervals, when the membrane holes of the microfiltration membrane 311 are blocked, under the condition that the water flow is unchanged, the stress area of the microfiltration membrane 311 is increased, the water pressure pushes the moving ring 31 to move backward, and the first spring 32 is compressed, when the ratchet blocks 332 on the outer wall of the rotating plate 331 are engaged with the ratchet bars on the outer wall of the transmission belt 93, the transmission belt 93 can drive the moving ring 31 to move backward rapidly through the ratchet blocks 332, the moving ring 31 drives the two driving frames 64 to move synchronously through the two connecting ropes 65, the two driving frames 64 drive the two water stop plates 61 to rotate synchronously through the vortex springs 63, the water stop plates 61 rotationally connected to the inner wall of the water inlet groove 43 are perpendicular to the inner wall of the water inlet groove 43, the water inlet 41 is separated from the inside of the mounting front shell 4, the water stop plates 61 rotationally connected to the inner wall of the water outlet groove 44 are kept horizontal with the inner wall of the water outlet groove 44, and the water outlet 42 keeps communicating with the inside of the mounting front shell 4, the inner walls of the water inlet groove 43 and the water outlet groove 44 are both welded and fixed with blocking strip plates in the middle, the two blocking strip plates can prevent the two water stop plates 61 from rotating excessively, the opposite end faces of the water inlet groove 43 and the water outlet groove 44 are both welded and fixed with limiting hooks, the two limiting hooks are used to prevent the two water stop plates 61 from rotating excessively, and the clean filtered water in the back half of the filter cylinder 21 is used for reverse flushing of the microfiltration membrane 311, so as to remove the impurities blocking the front end face of the microfiltration membrane 311, the impurities are discharged into the water delivery pipe 5 through the water outlet groove 44 and then flow back to the sedimentation tank for further sedimentation, the rotating shaft of one of the rotating rollers 92 penetrates through the side wall of the mounting box 91 and is fixedly connected with a servo motor 94 coaxially, specifically, the model of the servo motor 94 is MHMF042L1U2M, the servo motor 94 is fixedly installed on the top surface of the mounting box 91 through bolts, a guide rail 95 is fixedly installed on the inner wall of the mounting box 91 close to the filter cylinder 21, the inner wall of the guide rail 95 is matched with the outer wall of the adjusting rod 333 in size, specifically, the guide rail 95 is fixedly installed on the end face of the mounting box 91 through bolts, the guide rail 95 is a U-shaped rail, a sliding rod 951 is arranged on the top surface of the guide rail 95 close to the rear end of the filter cylinder 21, an inclined guide block 96 is slidably connected to the outer wall of the sliding rod 951, a fourth spring 97 is sleeved with the outer wall of the sliding rod 951, specifically, the inclined guide block 96 is slidably installed at the turning place of the U-shaped rail of the guide rail 95, the inclined guide block 96 divides the U-shaped rail into a forward rail and a return rail, the fourth spring 97 provides a restoring force to the inclined guide block 96, when the ratchet blocks 332 on the rotating plate 331 are engaged with the ratchet bars on the outer wall of the transmission belt 93, the transmission belt 93 can drive the moving ring 31 to move backward rapidly through the ratchet blocks 332, at this time, the adjusting rod 333 also enters the forward rail of the guide rail 95 synchronously, when the adjusting rod 333 moves to the turning place of the U-shaped rail,The adjusting rod 333 is in abutment with the outer wall of the inclined guide block 96, the fourth spring 97 is compressed and the inclined guide block 96 is moved, so that the approach rail of the U-shaped rail is communicated with the return rail, the adjusting rod 333 is guided to the return rail by the inclined surface of the inclined guide block 96, the rotating shaft 33 is rotated, the torsional spring 34 is compressed, the ratchet block 332 on the outer wall of the rotating plate 331 is disengaged from the ratchet bar on the outer wall of the transmission belt 93, and the moving ring 31 is pushed back to the initial position by the elastic force of the first spring 32.

[0054] The working principle of the present application is as follows: in the initial stage of operation, after the sewage is treated by aeration and sedimentation at the front end, the sewage enters the inside of the front shell 4 through the water inlet 41, and flows into the space in front of the filter cylinder 21 along the water inlet groove 43. At this time, the microfiltration membrane 311 installed on the inner wall of the moving ring 31 is in a clean state, the moving ring 31 is located at the position of the front end of the inner wall of the filter cylinder 21 under the action of the first spring 32, and the water stop plate 61 in the water inlet groove 43 keeps horizontal with the inner wall of the groove under the action of the vortex spring 63, so as to ensure that the water inlet 41 is communicated with the inside of the front shell 4, and the water stop plate 61 in the water outlet groove 44 keeps vertical with the inner wall of the groove, so as to block the water outlet 42, so that the sewage can only enter the filter cylinder 21 and cannot be directly discharged;

[0055] The sewage flows along the microfiltration membrane 311 in the filter cylinder 21, the suspended impurities are intercepted on the front end surface of the microfiltration membrane 311, and the clean water enters the rear half space of the filter cylinder 21 through the microfiltration membrane 311 and is discharged through the water outlet pipe 81. With the accumulation of impurities on the surface of the microfiltration membrane 311, the effective membrane hole area through which the water flows gradually decreases, so that the pressure difference on both sides of the microfiltration membrane 311 increases. When the water pressure is greater than the supporting force of the first spring 32, the water flow pressure drives the moving ring 31 to slide backward along the two sliding rods 211 and compresses the first spring 32.

[0056] During the backward movement of the moving ring 31, the ratchet block 332 on the outer wall of the rotating plate 331 is engaged with the ratchet bar on the outer wall of the transmission belt 93 in the driving assembly 9. The transmission belt 93 can drive the moving ring 31 to move backward rapidly through the ratchet block 332. The moving ring 31 drives the two driving frames 64 to move synchronously through the two connecting ropes 65, the two driving frames 64 drive the two water stop plates 61 to rotate synchronously through the vortex spring 63, the water stop plate 61 in the water inlet groove 43 is turned from the horizontal position to the vertical position with the inner wall of the groove, the communication between the water inlet 41 and the inside of the device is cut off, the water stop plate 61 in the water outlet groove 44 is turned from the vertical position to the horizontal position, the communication channel between the water outlet 42 and the inside of the device is opened, and the clean filtered water in the rear half of the filter cylinder 21 is used to reverse flush the microfiltration membrane 311, so as to remove the blockage of the impurities on the front end surface of the microfiltration membrane 311. The impurities are discharged into the water conveying pipe 5 through the water outlet groove 44 and are returned to the sedimentation tank for further sedimentation.

[0057] When the moving ring 31 moves backward, the moving ring 31 compresses the corrugated rubber sleeve 71 of the two groups of air jet assemblies 7, at this time, the air jet assemblies 7 start to work, the corrugated rubber sleeve 71 installed at the rear section of the inner wall of the filter cylinder 21 is in communication with the external air through the air inlet cylinder 72, the internal compressed air acts on the second ball valve 76 through the air jet pipe 75, the second ball valve 76 opens the air jet pipe 75 by overcoming the elastic force of the third spring 77, the air jet pipe 75 sprays high-pressure airflow, the bubbles formed by the high-pressure airflow in the water can better strip the impurities attached to the front end face of the microfiltration membrane 311, and the stripped impurities enter the water outlet groove 44 along with the backflushing water flow and are discharged back to the sedimentation tank through the water delivery pipe 5 for re-sedimentation treatment.

[0058] At the same time, the moving ring 31 continues to retreat, the adjusting rod 333 of the rotating plate 331 slides along the advancing rail of the guide rail 95, when the adjusting rod 333 moves to the turning place of the U-shaped rail, the adjusting rod 333 abuts against the inclined guide block 96, the fourth spring 97 is compressed and the inclined guide block 96 is pushed to move, so that the advancing rail of the U-shaped rail is in communication with the return rail, the adjusting rod 333 enters the return rail under the action of the inclined surface of the inclined guide block 96, drives the rotating shaft 33 to rotate, and the torsional spring 34 is compressed, so that the ratchet block 332 is disengaged from the meshing clamping of the transmission belt 93.

[0059] After the ratchet block 332 is disengaged, the transmission belt 93 no longer limits the movement of the moving ring 31, the first spring 32 releases the elastic force to push the moving ring 31 back to the initial position, at the same time, the vortex spring 63 releases the elastic force to reversely rotate the two water stop plates 61, restores the initial filtering state that the water inlet 41 is in communication and the water outlet 42 is closed, the corrugated rubber sleeve 71 of the air jet assembly 7 is stretched and unfolded by the moving ring 31, the internal air pressure of the corrugated rubber sleeve 71 decreases, the first ball valve 73 is attracted in the negative pressure of the corrugated rubber sleeve 71, the first ball valve 73 compresses the second spring 74 to communicate the air inlet cylinder 72 with the inside of the corrugated rubber sleeve 71, and the air re-inflates the corrugated rubber sleeve 71 until the corrugated rubber sleeve 71 returns to the original state, the system completes one automatic backflushing and cleaning cycle and enters the next round of sewage filtering work; thus, the device completes the work.

[0060] The above merely describes the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An industrial wastewater treatment device, comprising a filter body (1), characterized in that: The filter body (1) is equipped with a filter assembly (2), which includes a filter cylinder (21). A moving assembly (3) is slidably connected inside the filter cylinder (21). A front housing (4) is fixedly installed on the front end of the filter cylinder (21). Two sets of triggering assemblies (6) are installed inside the front housing (4). Two sets of jetting assemblies (7) are installed on the inner wall of the filter cylinder (21) near the rear end. A rear housing (8) is fixedly connected to the rear end of the filter cylinder (21). A driving assembly (9) is fixedly installed on the outer wall of the filter cylinder (21). During operation, the filter assembly (2) can automatically backwash the filter membrane through the cooperation of the moving assembly (3) and the jetting assembly (7) to remove attached impurities and restore the filtration flux. It is suitable for solid-liquid separation of liquids. The triggering component (6) includes a waterstop plate (61), and a spiral spring (63) is coaxially fixedly connected to both the left and right ends of the waterstop plate (61). A drive frame (64) is installed at the ends of the two spiral springs (63). A connecting rope (65) is fixedly connected to the front end of the drive frame (64). The end of the connecting rope (65) away from the drive frame (64) is fixedly connected to the front end of the moving ring (31). The jet assembly (7) includes a corrugated rubber sleeve (71), and an air inlet (72) is fixedly installed after the top surface of the corrugated rubber sleeve (71) passes through the side wall of the filter cylinder (21). A first ball valve (73) is slidably connected to the inner wall of the air inlet (72), and a second spring (74) is fixedly connected to the outer wall of the first ball valve (73). The bottom surface of the corrugated rubber sleeve (71) is fixedly connected to a jet pipe (75), the inner wall of the jet pipe (75) is slidably connected to a second ball valve (76), and the outer wall of the second ball valve (76) is fixedly connected to a third spring (77).

2. The industrial wastewater treatment device according to claim 1, characterized in that: The moving component (3) includes a moving ring (31), the outer wall of the moving ring (31) is slidably connected to the inner wall of the filter cartridge (21), a microfiltration membrane (311) is fixedly installed on the inner ring wall of the moving ring (31), a rotating shaft (33) is rotatably connected to the front end face of the moving ring (31), a rotating plate (331) is fixedly installed on the outer wall of the rotating shaft (33), a ratchet block (332) is provided on the outer wall of the rotating plate (331), and an adjusting rod (333) is provided on the top surface of the end of the rotating plate (331).

3. The industrial wastewater treatment device according to claim 1, characterized in that: The outer wall of the installation front shell (4) is provided with a water inlet (41) and a water outlet (42). Both the water inlet (41) and the water outlet (42) are fixedly installed with water pipes (5). The water inlet (41) and the water outlet (42) are respectively provided with a water inlet groove (43) and a water outlet groove (44) extending from the inner wall of the installation front shell (4).

4. The industrial wastewater treatment device according to claim 1, characterized in that: The drive assembly (9) includes a mounting box (91), and a plurality of rotating rollers (92) are rotatably connected at equal intervals to the inner wall of the mounting box (91).

5. An industrial wastewater treatment device according to claim 4, characterized in that: A transmission belt (93) is sleeved on the outer wall of several of the rotating rollers (92), and a servo motor (94) is coaxially fixedly connected to the shaft of one of the rotating rollers (92) after passing through the side wall of the mounting box (91).

6. An industrial wastewater treatment device according to claim 5, characterized in that: The mounting box (91) is fixedly mounted with a guide rail (95) near the inner wall of the filter cylinder (21). The inner wall size of the guide rail (95) is adapted to the outer wall size of the adjusting rod (333).

7. An industrial wastewater treatment device according to claim 6, characterized in that: The guide rail (95) has a sliding rod (951) on the top surface near the rear end of the filter cylinder (21). An inclined guide block (96) is slidably connected to the outer wall of the sliding rod (951), and a fourth spring (97) is sleeved on the outer wall of the sliding rod (951).

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