An ultrafiltration device

Abstract

The application relates to the technical field of sewage treatment, in particular to an ultrafiltration device which comprises a support, the upper end of the support is provided with a decontamination mechanism for preliminarily treating sewage, one side of the decontamination mechanism is provided with a sealing plate, the inner side of the sealing plate is provided with a feeding pipe, the other side of the decontamination mechanism is provided with a filtering mechanism for secondarily treating the sewage, and the inner side of the support is provided with a main ultrafiltration pipe; a first motor drives a first rotating shaft to rotate a sealing cylinder and a suction elbow pipe, so that the suction elbow pipe is periodically aligned with a coarse-hole filtering pipe; in cooperation with the elastic body sealing of a rubber pressing cylinder and the negative pressure differential of a first discharge pipe, one group of coarse-hole filtering pipes can be targeted backwashed, backwashing is more thorough, the problem that some pipe bodies are not cleaned thoroughly caused by traditional overall backwashing is avoided, and the plugging frequency of the coarse-hole filtering pipe is reduced.

Description

TECHNICAL FIELD

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

[0002] In the field of water treatment, ultrafiltration technology is widely used in decentralized sewage, such as rural domestic sewage and small town decentralized sewage treatment scenes, because it can effectively intercept colloids, particulate matter and part of organic matter in sewage. However, the existing ultrafiltration device still has technical problems when adapting to such scenes, and it is difficult to balance the treatment efficiency, stability and convenient operation, due to the complexity of working conditions and operation conditions.

[0003] The pretreatment unit of the existing device adopts a whole backwashing mode, for example, the coarse pore filter pipe group cannot clean a single pipe body when backwashing, which easily causes some pipe bodies to remain dirty. At the same time, the dirt suction pipeline (especially the elbow part) lacks an active anti-blocking structure, and dirt is easy to accumulate and form a blockage here, which needs to be frequently disassembled and cleaned. In addition, the dirt on the inner wall of the secondary filtration unit needs to be removed by disassembling the tank, which not only interrupts the treatment process, but also greatly increases the labor operation cost, and it is difficult to adapt to the low operation requirement of decentralized scenes. Most devices only rely on single-stage ultrafiltration or simple pretreatment, and cannot intercept different particle sizes of pollutants step by step, so that a large number of large particles directly enter the main ultrafiltration pipe, causing the membrane pollution rate to increase significantly, the replacement cycle of the main ultrafiltration pipe membrane assembly to be shortened, and the overall filtration efficiency to continuously decrease. At the same time, the device lacks a dynamic pressure regulation mechanism, and when the pressure of the secondary filtration unit suddenly rises due to dirt accumulation, it is easy to cause tank leakage, membrane assembly damage and other faults, and the operation stability is difficult to guarantee. Therefore, we propose an ultrafiltration device. SUMMARY

[0004] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the application provides an ultrafiltration device.

[0005] The technical scheme adopted by the application to solve the technical problems is: an ultrafiltration device, comprising a support, a dirt removal mechanism for preliminary treatment of sewage is arranged at the upper end of the support, a sealing plate is arranged on one side of the dirt removal mechanism, an inlet pipe is arranged on the inner side of the sealing plate, a filtration mechanism for secondary treatment of sewage is installed on the other side of the dirt removal mechanism, a main ultrafiltration pipe is installed on the inner side of the support, and a dirt discharge pipe is fixedly connected to the outer side of the main ultrafiltration pipe.

[0006] Preferably, the dirt removal mechanism comprises a cleaning assembly for controlling backwashing, and the dirt removal mechanism comprises a pushing assembly for accelerating the flow of dirt.

[0007] Preferably, the cleaning assembly comprises a first tank body fixedly connected with the support, one end of the first tank body is threadedly connected with the sealing plate, the outer side of the first tank body is provided with a first motor, the inner side of the first tank body is fixedly connected with a first adsorption tank, the inner side of the first adsorption tank is provided with a plurality of coarse hole filter pipes, the lower end of the coarse hole filter pipe is fixedly connected with a rubber pressing cylinder, the inner wall of the rubber pressing cylinder is provided with an elastic body, the outer wall of the rubber pressing cylinder is provided with a wear-resistant coating, the lower end of the first adsorption tank is fixedly connected with a water inlet cavity, and the outer side of the water inlet cavity is fixedly connected with a feeding pipe.

[0008] Preferably, the inner side of the first adsorption tank is rotatably connected with a first rotating shaft, the upper end of the first rotating shaft is fixedly connected with the output shaft of the first motor, the lower end of the first rotating shaft is fixedly connected with a sealing cylinder, the lower end of the sealing cylinder is fixedly connected with two material suction elbows through a four-way pipe, the upper ends of the two material suction elbows are respectively attached to the corresponding rubber pressing cylinders above, the lower end of the sealing cylinder is rotatably connected with a first discharge pipe through a four-way pipe, the outer side of the first discharge pipe is provided with an electromagnetic valve, and the lower end of the first discharge pipe is fixedly connected with a blowdown pipe through a pipeline.

[0009] Preferably, the pushing assembly comprises a second motor arranged on the inner side of the sealing cylinder, the output shaft of the second motor is fixedly connected with a rotating plate, the lower end of the rotating plate is fixedly connected with a U-shaped plate, the inner wall of the U-shaped plate is slidably connected with a sliding block through a sliding groove, the lower end of the sliding block is fixedly connected with a pushing rod, and the lower end of the rotating plate is provided with a waterproof cover close to the outer side.

[0010] Preferably, the outer side of the U-shaped plate is provided with a waterproof electric push rod, the output shaft of the waterproof electric push rod penetrates through the U-shaped plate, the output shaft of the waterproof electric push rod is fixedly connected with the sliding block, and the inner side of the waterproof electric push rod is provided with a temperature sensor.

[0011] Preferably, the outer side of the pushing rod is rotatably connected with a pushing frame, the two sides of the pushing frame are fixedly connected with symmetrical sliding rods, the outer side of the sliding rod is slidably connected with a fixing frame, the upper end of the fixing frame is fixedly connected with the material suction elbow, and the outer side of the sliding rod is slidably connected with the waterproof cover of the rotating plate through a sealing sleeve.

[0012] Preferably, the other end of the sliding rod is fixedly connected with a connecting sleeve, the inner side of the connecting sleeve is rotatably connected with a gear through a rotating shaft, the front and rear ends of the gear are fixedly connected with flexible sweeping rods through rotating shafts, the outer side of the flexible sweeping rod is provided with a micro groove, the outer side of the gear is meshingly connected with a rack, the outer side of the rack is provided with a PTFE coating, and the upper end of the rack is fixedly connected with the material suction elbow.

[0013] Preferably, the filtering mechanism comprises a second tank body fixedly connected with the first tank body, a second adsorption tank fixedly connected to the inner side of the second tank body, one end of the second adsorption tank fixedly connected with the first adsorption tank, an electromagnetic shunt valve arranged on the outer side of the second adsorption tank, the output port of the electromagnetic shunt valve fixedly connected with the first adsorption tank, a second discharge pipe slidably connected to the inner side of the second adsorption tank, the outer side of the second discharge pipe penetrating through the second tank body, a plurality of dirt suction devices arranged on the inner side of the second adsorption tank outside the second discharge pipe, the output port of the dirt suction device fixedly connected with the second discharge pipe, a material suction pipe fixedly connected to the input port of the dirt suction device, and a flexible sweeping head fixedly connected to the other end of the material suction pipe.

[0014] Preferably, the other end of the second tank body is fixedly connected with a third tank body, a third motor is installed at the other end of the third tank body, a second rotating shaft is fixedly connected to the output shaft of the third motor, two clamping strips are fixedly connected to the outer side of the second rotating shaft, a threaded rod is slidably connected to the outer side of the second rotating shaft, a threaded sleeve is threadedly connected to the outer side of the threaded rod, the threaded sleeve is fixedly connected with the third tank body through two connecting pieces, a progressive spring is arranged on the inner side of the threaded rod, one end of the progressive spring is fixedly connected with the threaded rod, the other end of the progressive spring is fixedly connected with the second rotating shaft, a connecting rod is fixedly connected to the other end of the threaded rod, a partition plate is rotatably connected to the outer side of the connecting rod, the partition plate is fixedly connected to the inner side of the third tank body, the other end of the connecting rod is fixedly connected with the second discharge pipe, a water flow sensor is arranged on the outer side of the connecting rod, an electromagnetic pressure relief valve is arranged on the outer side of the third tank body, and the output port of the electromagnetic pressure relief valve is fixedly connected with the discharge pipe through a pipeline.

[0015] Compared with the prior art, the present application provides an ultrafiltration device, which has the following advantages:

[0016] 1. In the cleaning assembly, the first motor drives the first rotating shaft to rotate the sealing cylinder and the suction bend, causing the suction bend to periodically align with the coarse-pore filter tube. Combined with the elastic seal of the rubber pressure cylinder and the negative pressure difference of the first discharge pipe, individual coarse-pore filter tubes can be backwashed specifically, resulting in a more thorough backwash and avoiding the problem of incomplete cleaning of some tubes caused by traditional overall backwashing, thus reducing the frequency of clogging of the coarse-pore filter tube. In the pushing assembly, the second motor drives the rotating plate, pushing rod, and sliding rod to move, causing the gear in the connecting sleeve to roll along the rack and rotate, thereby driving the flexible sweeping rod to move particles in the suction bend. Simultaneously, the waterproof electric push rod can adjust the position of the pushing rod to expand the cleaning range. This design prevents dirt from accumulating at the bend of the suction pipe; the microgrooves of the flexible sweeping rod further reduce contaminant adhesion, minimizing the risk of clogging and eliminating the need for frequent disassembly and cleaning of the suction pipe; in the filtration mechanism, a third motor drives the second rotating shaft, threaded rod, and connecting rod to slide the second discharge pipe and the suction device, which then peels off particles embedded in the inner wall of the second adsorption tank through the suction pipe and flexible sweeping head; combined with the pressure difference created by the electromagnetic pressure relief valve and the clogging monitoring by the water flow sensor, it can thoroughly clean the fine particles trapped by the secondary filtration unit, avoiding the decrease in filtration efficiency caused by dirt accumulation on the inner wall of the second adsorption tank in traditional devices, and eliminating the need to stop the machine to disassemble the tank, making maintenance more convenient.

[0017] 2. By employing a three-stage filtration architecture—with coarse-pore filter tubes initially trapping large particles, a second adsorption tank trapping fine particles, and a main ultrafiltration tube for final ultrafiltration—the first and second adsorption tanks progressively trap pollutants of different particle sizes. This significantly reduces the total amount of pollutants entering the main ultrafiltration tube, slows down the membrane fouling rate, extends its filtration cycle, and avoids the problem of frequent membrane module replacements due to excessive load in traditional devices, thus improving overall filtration efficiency. In the filtration mechanism, when the pressure in the second adsorption tank is too high, an electromagnetic diversion valve can backflow some of the high-pressure wastewater to the first adsorption tank to buffer the pressure. A subsequent electromagnetic pressure relief valve can adjust the pressure difference between the inside and outside of the second adsorption tank, providing power for suction while preventing sudden pressure increases that could damage components such as the second adsorption tank and the main ultrafiltration tube. Combined with a water flow sensor monitoring the effluent status of the second discharge pipe, blockages can be detected promptly, allowing for shutdown and troubleshooting, further ensuring the stability of the device's operation and reducing downtime losses due to sudden failures.

[0018] 3, the first tank body is connected through the sealing plate and the first tank body, and the sealing chamber in the first tank body is formed; the rubber pressing cylinder at the lower end of the coarse hole filter pipe is sealed by the elastic body on the inner wall and the suction bend pipe, so that sewage leakage into the first adsorption tank chamber is avoided; the waterproof cover of the sliding rod and the rotating plate is connected through the sealing sleeve, so that the sewage is prevented from penetrating into the internal driving assembly; the multi-link sealing cooperation solves the problems of sewage overflow and component damage caused by poor sealing of the traditional device; the outer wall of the rubber pressing cylinder is provided with a wear-resistant coating to reduce the wear when the rubber pressing cylinder is attached to the suction bend pipe; the outer side of the rack is provided with a PTFE coating to reduce the friction loss when the rack is engaged with the gear; the progressive spring can buffer the impact force of the threaded rod translation, so as to avoid the rigid collision between the threaded rod and the second rotating shaft; the flexible sweeping head is made of flexible material, which can not only ensure the adhesion to the inner wall of the second adsorption tank to suck the sewage, but also avoid scratching the tank wall. These designs greatly prolong the service life of the key components such as the rubber pressing cylinder, the rack and the threaded rod, reduce the replacement frequency of the components, and reduce the long-term use cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 3 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 4 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 5 It is a schematic diagram of the overall structure of the present application; Figure 4

[0024] Figure 6 It is a schematic diagram of the overall structure of the present application; Figure 1

[0025] Figure 7 It is a schematic diagram of the overall structure of the present application; Figure 2

[0026] Figure 8 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 9 It is a schematic diagram of the overall structure of the present application; Figure 8

[0028] ​​​​As shown in the figure, 1, support; 2, sealing plate; 3, feed pipe; 4, first motor; 5, dirt removal mechanism; 51, cleaning assembly; 511, first tank body; 512, first adsorption tank; 513, coarse hole filter pipe; 514, rubber pressure cylinder; 515, first rotating shaft; 516, sealing cylinder; 517, suction bend; 518, first discharge pipe; 519, electromagnetic valve; 5110, water inlet cavity; 52, pushing assembly; 521, second motor; 522, rotating plate; 523, U-shaped plate; 524, sliding block; 525, pushing rod; 526, waterproof electric pushing rod; 527, pushing frame; 528, sliding rod; 529, fixing frame; 5210, connecting sleeve; 5211, gear; 5212, flexible sweeping rod; 5213, rack; 6, filtering mechanism; 61, second tank body; 62, second adsorption tank; 63, electromagnetic flow valve; 64, second discharge pipe; 65, dirt suction device; 66, suction pipe; 67, flexible sweeping head; 68, third tank body; 69, third motor; 610, second rotating shaft; 611, clamping strip; 612, threaded rod; 613, threaded sleeve; 614, progressive spring; 615, connecting rod; 616, partition plate; 617, water flow sensor; 618, electromagnetic pressure relief valve; 7, main ultrafiltration pipe; 8, sewage discharge pipe. DETAILED DESCRIPTION

[0029] 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.

[0030] All the electrical elements are electrically connected through the PLC controller of the peripheral device.

[0031] Please refer to Figures 1-9 An ultrafiltration device, comprising a support 1, the upper end of the support 1 is provided with a dirt removal mechanism 5 for preliminary treatment of sewage, one side of the dirt removal mechanism 5 is provided with a sealing plate 2, the inner side of the sealing plate 2 is provided with a feed pipe 3, the other side of the dirt removal mechanism 5 is installed with a filtering mechanism 6 for secondary treatment of sewage, the inner side of the support 1 is installed with a main ultrafiltration pipe 7, the outer side of the main ultrafiltration pipe 7 is fixedly connected with a sewage discharge pipe 8.

[0032] In this embodiment, the dirt removal mechanism 5 comprises a cleaning assembly 51 for controlling backwashing, and the dirt removal mechanism 5 comprises a pushing assembly 52 for accelerating the flow of dirt.

[0033] Specifically, the dirt removal mechanism 5 is used for preliminary treatment of sewage as a whole, removes part of the pollutants in the water to reduce the subsequent filtration burden; wherein the cleaning assembly 51 is mainly responsible for controlling the backwashing process and removing the dirt intercepted in the preliminary filtration process; the pushing assembly 52 is used for accelerating the flow speed of the dirt in the discharge path, avoiding dirt accumulation and blockage, and ensuring the stable operation of the preliminary dirt removal link.

[0034] In the embodiment, the cleaning assembly 51 comprises a first tank body 511 fixedly connected with the support 1, one end of the first tank body 511 is threadedly connected with the sealing plate 2, the outer side of the first tank body 511 is provided with the first motor 4, the inner side of the first tank body 511 is fixedly connected with a first adsorption tank 512, a plurality of coarse hole filter pipes 513 are circumferentially arranged on the inner side of the first adsorption tank 512, a rubber pressing cylinder 514 is fixedly connected to the lower end of each of the coarse hole filter pipes 513, the inner wall of the rubber pressing cylinder 514 is provided with an elastic body, the outer wall of the rubber pressing cylinder 514 is provided with a wear-resistant coating, the lower end of the first adsorption tank 512 is fixedly connected with a water inlet cavity 5110, and the outer side of the water inlet cavity 5110 is fixedly connected with the feed pipe 3.

[0035] Specifically, the first tank body 511 of the cleaning assembly 51 is integrally positioned by being fixed with the support 1, one end of the first tank body 511 is threadedly connected with the sealing plate 2 to form a sealed chamber to prevent sewage from overflowing; the first motor 4 provides power for backwashing of the cleaning assembly 51; the first adsorption tank 512 is fixedly connected to the inner side of the first tank body 511 and serves as a core carrier for preliminary filtration; the coarse hole filter pipes 513 circumferentially arranged on the inner side of the first adsorption tank 512 are used for directly trapping large-particle pollutants in the sewage to achieve preliminary filtration; the rubber pressing cylinder 514 at the lower end of each of the coarse hole filter pipes 513 has an elastic body on the inner wall to ensure the sealing property of the rubber pressing cylinder 514 by slight deformation and has a wear-resistant coating on the outer wall to reduce abrasion during fitting and prolong the service life; the water inlet cavity 5110 at the lower end of the first adsorption tank 512 is fixedly connected with the feed pipe 3 to uniformly distribute the sewage delivered by the feed pipe 3 into each of the coarse hole filter pipes 513 and ensure uniform filtration.

[0036] In the embodiment, the inner side of the first adsorption tank 512 is rotatably connected with a first rotating shaft 515, the upper end of the first rotating shaft 515 is fixedly connected with the output shaft of the first motor 4, the lower end of the first rotating shaft 515 is fixedly connected with a sealing cylinder 516, the lower end of the sealing cylinder 516 is fixedly connected with two suction bends 517 through a four-way pipe, the upper ends of the two suction bends 517 are respectively fitted with the corresponding rubber pressing cylinders 514, the lower end of the sealing cylinder 516 is rotatably connected with a first discharge pipe 518 through a four-way pipe, the outer side of the first discharge pipe 518 is provided with an electromagnetic valve 519, and the lower end of the first discharge pipe 518 is fixedly connected with the sewage discharge pipe 8 through a pipeline.

[0037] Specifically, the first rotating shaft 515 is rotationally connected inside the first adsorption tank 512, and the upper end thereof is fixed with the output shaft of the first motor 4, so that the lower end of the sealing cylinder 516 can be synchronously rotated under the driving of the first motor 4; the sealing cylinder 516 is connected with two material suction bends 517 and the first discharge pipe 518 through a four-way pipe, and plays a role of transfer and sealing; the upper ends of the two material suction bends 517 are attached to the corresponding rubber compression cylinders 514, so that the material suction bends 517 can be periodically aligned with the coarse hole filter pipe 513 under the driving of the sealing cylinder 516 to collect the dirt generated by backwashing; the first discharge pipe 518 is rotationally connected with the sealing cylinder 516 through a four-way pipe, and the electromagnetic valve 519 outside the first discharge pipe 518 can control the opening and closing of the first discharge pipe 518, so that the collected dirt can be transported to the drain pipe 8 through the first discharge pipe 518.

[0038] In the embodiment, the pushing assembly 52 includes a second motor 521 arranged inside the sealing cylinder 516, and the output shaft of the second motor 521 is fixedly connected with a rotating plate 522, the lower end of the rotating plate 522 is fixedly connected with a U-shaped plate 523, the inner wall of the U-shaped plate 523 is slidingly connected with a sliding block 524 through a sliding groove, and the lower end of the sliding block 524 is fixedly connected with a pushing rod 525. A waterproof cover is arranged at a position close to the outside of the lower end of the rotating plate 522.

[0039] Specifically, the second motor 521 of the pushing assembly 52 is arranged inside the sealing cylinder 516 to provide power for the movement of the pushing assembly 52; the rotating plate 522 fixedly connected with the output shaft of the second motor 521 can rotate around the circumference of the output shaft under the driving of the motor; the U-shaped plate 523 fixedly connected with the lower end of the rotating plate 522 moves synchronously with the rotating plate 522, and the sliding groove in the inner wall of the U-shaped plate 523 provides a sliding track for the sliding block 524; the pushing rod 525 fixedly connected with the lower end of the sliding block 524 can move with the sliding block 524, and then transmit the movement; the waterproof cover outside the lower end of the rotating plate 522 can prevent sewage from entering the inside of the second motor 521 and the U-shaped plate 523, and protect the normal operation of the components.

[0040] In the embodiment, a waterproof electric push rod 526 is mounted outside the U-shaped plate 523, the output shaft of the waterproof electric push rod 526 penetrates the U-shaped plate 523, the output shaft of the waterproof electric push rod 526 is fixedly connected with the sliding block 524, and a temperature sensor is arranged inside the waterproof electric push rod 526.

[0041] Specifically, the waterproof electric push rod 526 is mounted outside the U-shaped plate 523, the output shaft of the waterproof electric push rod 526 penetrates the U-shaped plate 523 and is fixed with the sliding block 524, so as to drive the sliding block 524 to slide in the sliding groove in the inner wall of the U-shaped plate 523, and then adjust the position of the pushing rod 525; the temperature sensor inside the waterproof electric push rod 526 can monitor the internal temperature of the pushing rod in real time, so as to avoid damage of the components caused by excessively high temperature.

[0042] The outer side of the push rod 525 is rotationally connected with a push frame 527, the two sides of the push frame 527 are fixedly connected with symmetrical slide rods 528, the outer side of the slide rod 528 is slidingly connected with a fixing frame 529, the upper end of the fixing frame 529 is fixedly connected with the suction elbow 517, and the outer side of the slide rod 528 is slidingly connected with the waterproof cover of the rotating plate 522 through a sealing sleeve.

[0043] Specifically, the push frame 527 rotationally connected with the outer side of the push rod 525 can be deflected back and forth under the driving of the push rod 525; the slide rods 528 fixed on the two sides of the push frame 527 are slidingly connected with the outer side of the fixing frame 529, and the upper end of the fixing frame 529 is fixed with the suction elbow 517, so that the slide rods 528 can be stably guided; the sealing sleeve between the slide rods 528 and the waterproof cover of the rotating plate 522 can keep waterproof sealing when the slide rods 528 slide, so as to prevent sewage from seeping in.

[0044] In this embodiment, the other end of the slide rod 528 is fixedly connected with a connecting sleeve 5210, the inner side of the connecting sleeve 5210 is rotationally connected with a gear 5211 through a rotating shaft, the front and rear ends of the gear 5211 are fixedly connected with flexible sweep rods 5212 through rotating shafts, the outer side of the flexible sweep rod 5212 is provided with a micro groove, the outer side of the gear 5211 is meshingly connected with a rack 5213, the outer side of the rack 5213 is provided with a PTFE coating, and the upper end of the rack 5213 is fixedly connected with the suction elbow 517.

[0045] Specifically, the connecting sleeve 5210 fixed at the other end of the slide rod 528 is used for installing the gear 5211; the gear 5211 is rotationally connected to the inner side of the connecting sleeve 5210 through a rotating shaft, and the outer side thereof is meshingly connected with the rack 5213 fixed on the suction elbow 517, so that the gear 5211 can roll along the rack 5213 and rotate under the driving of the slide rod 528; the flexible sweep rods 5212 fixed at the front and rear ends of the gear 5211 can stir the particulate matters in the suction elbow 517 when the gear 5211 rotates, so as to avoid blockage, and the micro groove on the outer side of the flexible sweep rods 5212 can reduce the attachment of pollutants; the PTFE coating on the outer side of the rack 5213 can reduce the meshing friction with the gear 5211 and reduce the wear of components.

[0046] In this embodiment, the filtering mechanism 6 comprises a second tank body 61 fixedly connected with the first tank body 511, a second adsorption tank 62 fixedly connected inside the second tank body 61, one end of the second adsorption tank 62 fixedly connected with the first adsorption tank 512, an electromagnetic shunt valve 63 arranged outside the second adsorption tank 62, an output port of the electromagnetic shunt valve 63 fixedly connected with the first adsorption tank 512, a second discharge pipe 64 slidably connected inside the second adsorption tank 62, the second discharge pipe 64 penetrating through the second tank body 61, a plurality of dirt suction devices 65 arranged inside the second adsorption tank 62 outside the second discharge pipe 64, an output port of each dirt suction device 65 fixedly connected with the second discharge pipe 64, a suction pipe 66 fixedly connected with an input port of each dirt suction device 65, and a flexible sweeping head 67 fixedly connected to the other end of the suction pipe 66.

[0047] Specifically, the second tank body 61 of the filtering mechanism 6 is fixed with the first tank body 511 to provide installation space for secondary filtration; the second adsorption tank 62 fixedly connected inside the second tank body 61 has one end fixedly connected with the first adsorption tank 512, can receive the preliminarily filtered sewage and intercept small particulate matters, and realizes secondary filtration; the electromagnetic shunt valve 63 arranged outside the second adsorption tank 62 has an output port fixedly connected with the first adsorption tank 512, can return part of the sewage to the first adsorption tank 512 to relieve the pressure when the pressure of the second adsorption tank 62 is too high; the second discharge pipe 64 is slidably connected inside the second adsorption tank 62 and penetrates through the second tank body 61, the plurality of dirt suction devices 65 arranged inside the second adsorption tank 62 outside the second discharge pipe 64, the suction pipe 66 and the flexible sweeping head 67 adsorb the dirt on the tank wall and deliver the dirt to the second discharge pipe 64 through the input port; the flexible sweeping head 67 can adhere to the tank wall without scratching the tank wall, ensuring complete dirt suction.

[0048] In this embodiment, the other end of the second tank body 61 is fixedly connected with a third tank body 68, the other end of the third tank body 68 is installed with a third motor 69, an output shaft of the third motor 69 is fixedly connected with a second rotating shaft 610, the outer side of the second rotating shaft 610 is fixedly connected with two clamping strips 611, the outer side of the second rotating shaft 610 is slidably connected with a threaded rod 612, the outer side of the threaded rod 612 is threadedly connected with a threaded sleeve 613, the outer side of the threaded sleeve 613 is fixedly connected with the third tank body 68 through two connecting pieces, the inner side of the threaded rod 612 is provided with a progressive spring 614, one end of the progressive spring 614 is fixedly connected with the threaded rod 612, the other end of the progressive spring 614 is fixedly connected with the second rotating shaft 610, the other end of the threaded rod 612 is fixedly connected with a connecting rod 615, the outer side of the connecting rod 615 is rotatably connected with a partition plate 616, the partition plate 616 is fixedly connected inside the third tank body 68, the other end of the connecting rod 615 is fixedly connected with the second discharge pipe 64, the outer side of the connecting rod 615 is provided with a water flow sensor 617, the outer side of the third tank body 68 is provided with an electromagnetic pressure relief valve 618, and an output port of the electromagnetic pressure relief valve 618 is fixedly connected with the sewage discharge pipe 8 through a pipeline.

[0049] Specifically, the third tank body 68 is fixed at the other end of the second tank body 61 to provide a mounting carrier for the driving components; the third motor 69 is mounted at the other end of the third tank body 68, and the output shaft of the third motor 69 is fixed to the second rotating shaft 610 which can rotate under the driving of the motor; the two clamping strips 611 outside the second rotating shaft 610 are used to drive the threaded rod 612 connected in sliding mode to rotate synchronously; the threaded rod 612 outside is in threaded connection with the threaded sleeve 613 fixed on the third tank body 68, and can translate along the axial direction when rotating; the progressive spring 614 inside the threaded rod 612 is fixed at both ends of the threaded rod 612 and the second rotating shaft 610 respectively, and can buffer the impact force of the translation of the threaded rod 612; the connecting rod 615 fixed at the other end of the threaded rod 612 is connected with the second discharge pipe 64 and drives it to slide, and the baffle 616 rotatably connected outside the connecting rod 615 is fixed inside the third tank body 68 to provide a guide for the connecting rod 615; the water flow sensor 617 outside the connecting rod 615 can detect the water outlet state of the second discharge pipe 64 to determine whether it is blocked; the electromagnetic pressure relief valve 618 outside the third tank body 68 has an output port fixed with the blowdown pipe 8, which can not only form a pressure difference between the inside and outside of the second adsorption tank 62 to assist in absorbing dirt, but also discharge dirt to the blowdown pipe 8.

[0050] Working principle, in use, sewage is transported to the water inlet cavity 5110 at the lower end of the first adsorption tank 512 through the feed pipe 3 inside the sealing plate 2, the water inlet cavity 5110 is in communication with a plurality of coarse hole filter pipes 513 arranged around the inside of the first adsorption tank 512, and the sewage uniformly enters each coarse hole filter pipe 513 for preliminary filtration; at this time, the rubber pressing cylinder 514 at the lower end of the coarse hole filter pipe 513 keeps in close contact with the suction elbow 517, the wear-resistant coating on the outer wall of the rubber pressing cylinder 514 reduces the close contact wear, and the elastic body in the inner wall can ensure sealing through slight deformation, avoiding leakage of sewage to the cavity of the first adsorption tank 512. The water flow after preliminary filtration passes through the coarse hole filter pipe 513 into the inside of the first adsorption tank 512, and then flows into the second adsorption tank 62 connected with the first adsorption tank 512 for secondary treatment; the sealing plate 2 is in threaded connection with the first tank body 511, which can seal the internal cavity of the first tank body 511 to prevent sewage from overflowing and ensure the overall sealing performance of the equipment;

[0051] When the sewage is preliminarily filtered in the coarse-hole filtering pipe 513, a large number of particles in the water will be intercepted in the pipe, causing the pressure difference between the inside and outside of the coarse-hole filtering pipe 513, between the sewage side in the pipe and the chamber of the first adsorption tank 512 outside the pipe, to gradually increase; when the pressure difference reaches a set threshold value, the first motor 4 is started, and the output shaft of the first motor 4 drives the first rotating shaft 515 to rotate around the axis thereof, the sealing cylinder 516 at the lower end of the first rotating shaft 515 synchronously rotates, and then drives the two suction elbow pipes 517 connected with the four-way pipe at the lower end of the sealing cylinder 516 to rotate along the circumferential direction of the inside of the first adsorption tank 512, so as to realize the periodic alignment of the two suction elbow pipes 517 with the corresponding coarse-hole filtering pipes 513 above. During the alignment process, the rubber pressing cylinder 514 enhances the sealing property of the adhesion with the suction elbow pipe 517 through the further deformation of the elastic body on the inner wall, at this time, the electromagnetic valve 519 outside the first discharge pipe 518 is opened, the low pressure in the chamber of the first adsorption tank 512 outside the coarse-hole filtering pipe 513 and the negative pressure inside the first discharge pipe 518 form a pressure difference, under the action of the pressure difference, the pollutants intercepted in the coarse-hole filtering pipe 513 are back-flushed, fall into the suction elbow pipe 517, and then are transported to the sewage discharge pipe 8 through the first discharge pipe 518 for discharge; after the back-flushing of a group of coarse-hole filtering pipes 513 to the recovery of the pressure difference to normal, the suction elbow pipe 517 continues to rotate to align the next group of coarse-hole filtering pipes 513, and the above back-flushing process is repeated;

[0052] When the first discharge pipe 518 is discharging sewage, the second motor 521 in the pushing assembly 52 is started synchronously, and the output shaft drives the rotating plate 522 to rotate around the output shaft circumference; the U-shaped plate 523 at the lower end of the rotating plate 522 rotates synchronously with the rotating plate 522, the slider 524 connected with the inner side sliding groove of the U-shaped plate 523 drives the pushing rod 525 to move, the pushing rod 525 drives the pushing frame 527 to deflect back and forth along the length direction of the material suction elbow 517 through the rotating connection with the pushing frame 527. The slide rod 528 at both sides of the pushing frame 527 slides in the fixed frame 529, and the fixed frame 529 is fixed with the material suction elbow 517 to provide guidance for the slide rod 528, and the connecting sleeve 5210 at the other end of the slide rod 528 moves linearly synchronously with the slide rod 528, the gear 5211 at the inner side of the connecting sleeve 5210 is engaged with the rack 5213 fixed to the material suction elbow 517, and when the gear 5211 moves with the slide rod 528, it rolls along the rack 5213 and rotates, thereby driving the flexible sweeping rod 5212 at both ends of the gear 5211 to rotate synchronously. When the flexible sweeping rod 5212 rotates, the particulate matter in the material suction elbow 517 can be poked, so as to avoid the accumulation and blockage of the particulate matter at the elbow; the micro-groove at the outer side of the flexible sweeping rod 5212 can accommodate part of the fine particulate matter, reduce the adhesion of the fine particulate matter on the surface of the sweeping rod, and enhance the cleaning effect on the inner wall of the material suction elbow 517; the PTFE coating at the outer side of the rack 5213 can reduce the engagement friction with the gear 5211 and reduce wear. If it is necessary to expand the cleaning range, the waterproof electric push rod 526 at the outer side of the U-shaped plate 523 is started, the output shaft of the waterproof electric push rod 526 pushes the slider 524 to slide in the sliding groove at the inner side of the U-shaped plate 523, and the distance between the pushing rod 525 and the axis of the rotating plate 522 is adjusted; the farther the distance between the pushing rod 525 and the axis, the greater the circumferential radius of the rotating plate 522, and the deflection amplitude of the pushing frame 527 is increased, so that the cleaning coverage of the flexible sweeping rod 5212 is wider, and the missed dead angle is avoided; the waterproof cover close to the outer side at the lower end of the rotating plate 522 can prevent sewage from entering the second motor 521 and the U-shaped plate 523; the slide rod 528 and the waterproof cover are connected through a sealing sleeve, and the waterproof sealing property is further enhanced; the temperature sensor at the inner side of the waterproof electric push rod 526 can monitor the internal temperature of the push rod in real time, so as to avoid overheating damage;

[0053] After the sewage preliminarily filtered by the first adsorption tank 512 enters the second adsorption tank 62, the finer particles in the water are intercepted by the inner wall of the second adsorption tank 62, and the filtered water flows through the pipeline into the main ultrafiltration pipe 7 inside the support 1 for final ultrafiltration treatment, thereby reducing the amount of pollutants intercepted by the main ultrafiltration pipe 7, slowing down the clogging speed, and improving the overall working efficiency. When the pressure in the second adsorption tank 62 reaches a set value due to the accumulation of particles, the electromagnetic shunt valve 63 outside the second adsorption tank 62 is opened, allowing part of the high-pressure sewage to flow back into the first adsorption tank 512, thereby buffering the pressure with the chamber volume of the first adsorption tank 512 to avoid damage to the second adsorption tank 62 due to excessive pressure; after the pressure is relieved, the electromagnetic shunt valve 63 is closed, and the electromagnetic pressure relief valve 618 outside the third tank body 68 is opened again, so that the inside of the second adsorption tank 62 forms a pressure difference with the third tank body 68 and the sewage discharge pipe 8, providing power for sewage suction. Then the third motor 69 is started, and the output shaft drives the second shaft 610 to rotate. The clamping strip 611 outside the second shaft 610 is embedded in the clamping groove of the threaded rod 612, which transmits torque to the threaded rod 612 and drives it to rotate synchronously. The threaded rod 612 is screw-connected with the threaded sleeve 613 fixed to the third tank body 68, and rotates along the internal thread of the threaded sleeve 613 to axially translate, while compressing the progressive spring 614 inside. The progressive spring 614 can buffer the impact force of the translation of the threaded rod 612 to avoid rigid collision with the second shaft 610. The threaded rod 612 drives the second discharge pipe 64 to move through the connecting rod 615 at the other end. The connecting rod 615 penetrates the partition plate 616 fixed inside the third tank body 68, and the partition plate 616 can guide the movement of the connecting rod 615 to ensure that the second discharge pipe 64 smoothly slides along the second adsorption tank 62 and extends into the tank. The multiple suction devices 65 outside the second discharge pipe 64 are started, and the suction devices 65 suck the particles on the inner wall of the second adsorption tank 62 through the suction pipe 66. The flexible sweeping head 67 at the other end of the suction pipe 66 is made of flexible material and can adhere to the inner wall of the second adsorption tank 62 without scratching the tank wall. When the suction pipe 66 rotates, it can strip the particles embedded in the tank wall through a certain contact pressure, ensuring complete suction. The stripped particles and part of the sewage enter the second discharge pipe 64 through the suction pipe 66 and the suction device 65, and then flow into the compartment between the third tank body 68 and the partition plate 616. The water flow sensor 617 outside the connecting rod 615 can detect the water flow state in the second discharge pipe 64 in real time. If the water flow is interrupted or the flow is suddenly reduced, it can be judged that the suction device 65 or the suction pipe 66 is blocked, so that the machine can be stopped in time for troubleshooting. Finally, the sewage and particles in the compartment are discharged to the sewage discharge pipe 8 through the electromagnetic pressure relief valve 618.After the sewage is sucked, the sewage suction device 65 is closed, the third motor 69 is started to reverse, the second rotating shaft 610 and the threaded rod 612 are reversely rotated, the threaded rod 612 is reversely translated along the threaded sleeve 613, the progressive spring 614 is reset, the second discharge pipe 64 and the sewage suction device 65 are driven to the initial position through the connecting rod 615, the electromagnetic pressure relief valve 618 is closed, and one sewage suction cycle is completed.

[0054] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An ultrafiltration device, comprising a support (1), characterized in that: The upper end of the support (1) is provided with a decontamination mechanism (5) for preliminary sewage treatment. A sealing plate (2) is provided on one side of the decontamination mechanism (5). A feed pipe (3) is provided on the inner side of the sealing plate (2). A filtration mechanism (6) for secondary sewage treatment is installed on the other side of the decontamination mechanism (5). A main ultrafiltration pipe (7) is installed on the inner side of the support (1). A sewage discharge pipe (8) is fixedly connected to the outer side of the main ultrafiltration pipe (7). The decontamination mechanism (5) includes a cleaning component (51) for controlling backwashing. The decontamination mechanism (5) includes a pushing component (52) for accelerating the flow of dirt. The cleaning component (51) includes a first tank (511) fixedly connected to the support (1). 11) One end is threaded to the sealing plate (2), the first motor (4) is installed on the outside of the first tank (511), the first adsorption tank (512) is fixedly connected to the inside of the first tank (511), the inside of the first adsorption tank (512) is surrounded by a plurality of coarse-pore filter tubes (513), the lower end of the coarse-pore filter tubes (513) is fixedly connected to a rubber cylinder (514), the inner wall of the rubber cylinder (514) is provided with an elastomer, the outer wall of the rubber cylinder (514) is provided with a wear-resistant coating, the lower end of the first adsorption tank (512) is fixedly connected to a water inlet chamber (5110), the outside of the water inlet chamber (5110) is fixedly connected to the feed pipe (3), the first adsorption tank (512) A first rotating shaft (515) is rotatably connected to the inner side. The upper end of the first rotating shaft (515) is fixedly connected to the output shaft of the first motor (4). A sealing cylinder (516) is fixedly connected to the lower end of the first rotating shaft (515). Two suction bends (517) are fixedly connected to the lower end of the sealing cylinder (516) through a four-way pipe. The upper ends of the two suction bends (517) are respectively attached to the corresponding rubber pressure cylinders (514) above. A first discharge pipe (518) is rotatably connected to the lower end of the sealing cylinder (516) through a four-way pipe. A solenoid valve (519) is installed on the outside of the first discharge pipe (518). The lower end of the first discharge pipe (518) is fixedly connected to the sewage pipe (8) through a pipe. The pushing component (5 2) Includes a second motor (521) disposed inside the sealing cylinder (516). The output shaft of the second motor (521) is fixedly connected to a rotating plate (522). The lower end of the rotating plate (522) is fixedly connected to a U-shaped plate (523). The inner wall of the U-shaped plate (523) is slidably connected to a slider (524) via a sliding groove. The lower end of the slider (524) is fixedly connected to a push rod (525). A waterproof cover is disposed near the outer side of the lower end of the rotating plate (522). A waterproof electric actuator (526) is installed on the outer side of the U-shaped plate (523). The output shaft of the waterproof electric actuator (526) passes through the U-shaped plate (523). The output shaft of the waterproof electric actuator (526) is fixedly connected to the slider (524).A temperature sensor is installed on the inner side of the waterproof electric actuator (526). A push frame (527) is rotatably connected to the outer side of the push rod (525). Symmetrical slide rods (528) are fixedly connected to both sides of the push frame (527). A fixing frame (529) is slidably connected to the outer side of the slide rod (528). The upper end of the fixing frame (529) is fixedly connected to the suction bend (517). The outer side of the slide rod (528) is slidably connected to the waterproof cover of the rotating plate (522) through a sealing sleeve. The other end of the slide rod (528) A connecting sleeve (5210) is fixedly connected. A gear (5211) is rotatably connected to the inner side of the connecting sleeve (5210) via a rotating shaft. Flexible sweeping rods (5212) are fixedly connected to both ends of the gear (5211) via rotating shafts. Microgrooves are formed on the outer side of the flexible sweeping rods (5212). A rack (5213) is meshed with the outer side of the gear (5211). A PTFE coating is provided on the outer side of the rack (5213). The upper end of the rack (5213) is fixedly connected to a suction bend (517).

2. The ultrafiltration device according to claim 1, characterized in that: The filtration mechanism (6) includes a second tank (61) fixedly connected to the first tank (511). A second adsorption tank (62) is fixedly connected to the inner side of the second tank (61). One end of the second adsorption tank (62) is fixedly connected to the first adsorption tank (512). An electromagnetic diversion valve (63) is provided on the outer side of the second adsorption tank (62). The output port of the electromagnetic diversion valve (63) is fixedly connected to the first adsorption tank (512). A second discharge pipe (64) is slidably connected to the inner side of the second adsorption tank (62). The outer side of the second discharge pipe (64) passes through the second tank (61). Multiple vacuum cleaners (65) are provided inside the second adsorption tank (62). The output port of the vacuum cleaner (65) is fixedly connected to the second discharge pipe (64). The input port of the vacuum cleaner (65) is fixedly connected to a suction pipe (66). The other end of the suction pipe (66) is fixedly connected to a flexible sweeping head (67).

3. The ultrafiltration device according to claim 2, characterized in that: A third tank (68) is fixedly connected to the other end of the second tank (61). A third motor (69) is installed at the other end of the third tank (68). The output shaft of the third motor (69) is fixedly connected to a second rotating shaft (610). Two retaining strips (611) are fixedly connected to the outer side of the second rotating shaft (610). A threaded rod (612) is slidably connected to the outer side of the second rotating shaft (610). A threaded sleeve (613) is threadedly connected to the outer side of the threaded rod (612). The outer side of the threaded sleeve (613) is fixedly connected to the third tank (68) through two connecting pieces. A progressive spring (614) is provided on the inner side of the threaded rod (612). One end of the spring (614) is fixedly connected to the threaded rod (612), and the other end of the progressive spring (614) is fixedly connected to the second rotating shaft (610). The other end of the threaded rod (612) is fixedly connected to the connecting rod (615). The outer side of the connecting rod (615) is rotatably connected to the partition (616). The partition (616) is fixedly connected to the inner side of the third tank (68). The other end of the connecting rod (615) is fixedly connected to the second discharge pipe (64). A water flow sensor (617) is provided on the outer side of the connecting rod (615). An electromagnetic pressure relief valve (618) is provided on the outer side of the third tank (68). The output port of the electromagnetic pressure relief valve (618) is fixedly connected to the sewage pipe (8) through a pipe.

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