An ultrafiltration membrane cleaning device

Abstract

The utility model relates to water treatment equipment technical field discloses a kind of ultrafiltration membrane cleaning devices, including equipment main body, filter screen and scraping mechanism, the scraping mechanism is arranged in the inside of the filter screen. The scraping mechanism includes support rod, motor, belt pulley, belt strip, connecting arm and scraping ring, the motor drive belt pulley and belt strip circulate movement, drive connecting arm moves up and down, make scraping ring along the inner wall of the filter screen move up and down and scrape. Preferably, it further includes cleaning mechanism, the cleaning mechanism includes air blower and cleaning disc, the cleaning disc is opened in inclined spout, the cleaning disc is rotatably connected with gas pipe. It further includes pipeline mechanism and top cap. The utility model realizes the automatic physical cleaning to the inner wall of filter screen by scraping mechanism, and realizes rotary back flushing by cleaning mechanism, and cleaning effect is good, and function is comprehensive.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, and in particular to an ultrafiltration membrane cleaning device. Background Technology

[0002] Ultrafiltration membranes are core components widely used in water treatment and material separation. Their filtration performance directly affects the quality of effluent and the operating efficiency of the system. During long-term operation, ultrafiltration membranes will inevitably be contaminated by suspended solids, colloids, organic matter and microorganisms in the water, leading to membrane pore blockage, which manifests as a decrease in membrane flux and an increase in transmembrane pressure difference.

[0003] To mitigate membrane fouling, existing ultrafiltration membrane devices are typically equipped with gas backflush or hydraulic backwashing systems. These methods use reverse fluid impacts to wash away loose contaminants adhering to the membrane surface, which is effective in maintaining short-term stable membrane operation.

[0004] However, when treating wastewater containing high concentrations of organic matter or prone to biofilm formation, firmly adhering biological slime or stubborn scale layers easily form on the inner wall surface of the filter screen (or other specific areas). For this type of fouling, simple gas backflushing or hydraulic backwashing is insufficient due to limitations in cleaning power (non-physical contact) and the location of action. Currently, the industry mainly relies on periodic offline chemical cleaning (CIP) to treat this stubborn fouling, but this requires stopping equipment operation, is cumbersome, and the chemicals can damage the membrane material. Therefore, the market urgently needs a structure that can be integrated inside the equipment to automatically perform physical cleaning of the filter screen's inner wall.

[0005] Therefore, this utility model proposes an ultrafiltration membrane cleaning device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an ultrafiltration membrane cleaning device, which aims to improve the problem that some existing ultrafiltration membrane cleaning devices are prone to the formation of stubborn dirt on the inner wall of the filter screen, and that existing methods such as gas backflushing are difficult to automatically remove it physically.

[0007] This utility model provides an ultrafiltration membrane cleaning device, comprising: a device body, a filter screen installed on the inner wall of the device body, and a scraping mechanism disposed inside the filter screen.

[0008] The scraping mechanism includes a support rod fixed to the bottom of the inner wall of the filter screen, a motor installed inside the support rod, a pulley driven by the motor, a belt strip surrounding the pulley, a connecting arm fixedly connected to the outer wall of the belt strip, and a scraping ring fixedly connected to the end of the connecting arm.

[0009] Furthermore, the motor drives the pulley and the belt to move cyclically, the belt drives the connecting arm to move up and down, and the connecting arm drives the scraping ring to scrape up and down along the inner wall of the filter screen.

[0010] Preferably, the device also includes a cleaning mechanism, which includes a blower fixed to the outer wall of the main body of the equipment, and a cleaning disc disposed at the bottom of the main body of the equipment.

[0011] Preferably, the cleaning mechanism further includes an air supply pipe for connecting the blower and the cleaning disc, and the cleaning disc is rotatably connected to the air supply pipe.

[0012] Preferably, the cleaning mechanism further includes an inclined nozzle, which is located on the side of the cleaning disc facing the filter.

[0013] Preferably, it also includes a piping mechanism, which includes a water inlet pipe and a disinfectant inlet pipe, both of which are connected to the main body of the equipment.

[0014] Preferably, it also includes a sealing cap, which is connected to the end of the water inlet pipe.

[0015] Preferably, it also includes a top cover, which is detachably mounted on top of the device body.

[0016] Preferably, the filter screen is connected to the inner wall of the device body by a sidewall support structure.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting up a scraping mechanism and using a motor-driven belt transmission system to drive the scraping ring to move up and down along the inner wall of the filter screen, solves the problem in the prior art that the inner wall of the filter screen is prone to biological slime or stubborn scale, and lacks automated physical cleaning methods. It achieves the technical effect of automatically and powerfully physically removing dirt from the inner wall, efficiently restoring membrane flux, and extending the service life of the membrane.

[0018] 2. This utility model, by optimizing the cleaning mechanism, uses a blower to provide an air source, which is then sprayed out through a cleaning disc that is rotatably connected to the air supply pipe. This solves the problem of fixed gas backflushing structures and the easy generation of cleaning dead angles in the prior art. It achieves the technical effect of using the reaction force of the inclined nozzle to make the cleaning disc rotate, forming a rotating impact airflow, and performing backflushing cleaning of the filter screen without dead angles and with high efficiency.

[0019] 3. This utility model integrates the inner wall scraping mechanism and the gas backflushing cleaning mechanism into the same main body of the equipment, and sets up an independent disinfectant inlet pipe and a detachable top cover. It solves the problem that the existing cleaning devices have a single function and cannot cope with complex pollution. It achieves the technical effect of four modes working together: physical scraping, gas backflushing, chemical soaking and manual maintenance, resulting in more thorough cleaning and strong adaptability. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of an ultrafiltration membrane cleaning device proposed in this utility model; Figure 2 This is a schematic diagram of the cleaning disc of an ultrafiltration membrane cleaning device proposed in this utility model; Figure 3 This is a schematic diagram of the scraping ring of an ultrafiltration membrane cleaning device proposed in this utility model.

[0021] Legend: 1. Main body of the equipment; 2. Top cover; 3. Cleaning mechanism; 31. Blower; 32. Cleaning tray; 33. Inclined nozzle; 34. Filter screen; 35. Sealing cover; 36. Piping system; 361. Water inlet pipe; 362. Disinfectant inlet pipe; 4. Scraping mechanism; 41. Support rod; 42. Motor; 43. Pulley; 44. Belt strip; 45. Connecting arm; 46. Scraping ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Reference Figures 1 to 3 This utility model provides an ultrafiltration membrane cleaning device, which aims to solve the problem in the prior art that it is difficult to automatically and physically scrape off the dirt adhering to the inner wall of the filter screen.

[0024] like Figure 1 As shown, an ultrafiltration membrane cleaning device includes a main body 1 and a filter screen 34 installed on the inner wall of the main body 1. The main body 1 serves as the mounting base and container for the entire device, while the filter screen 34 is used to filter the liquid entering the main body 1.

[0025] Reference Figure 1 and Figure 3 The scraping mechanism 4 includes a support rod 41 fixed to the bottom of the inner wall of the filter screen 34, a motor 42 installed inside the support rod 41, a pulley 43 driven to rotate by the motor 42, a belt strip 44 surrounding the pulley 43, a connecting arm 45 fixedly connected to the outer wall of the belt strip 44, and a scraping ring 46. like Figure 3 As shown, the scraping ring 46 is fixedly connected to the end of the connecting arm 45. In the assembled state, the scraping edge of the scraping ring 46 is in close contact with the inner wall of the filter screen 34. When the motor 42 is started, the motor 42 drives the pulley 43 and the belt 44 to move cyclically. The belt 44 drives the connecting arm 45 to move up and down. The connecting arm 45 then drives the scraping ring 46 to scrape up and down along the inner wall of the filter screen 34. This reciprocating scraping structure achieved by electric drive belt transmission ensures that stubborn dirt attached to the inner wall of the filter screen 34 can be automatically and powerfully removed.

[0026] It also includes a cleaning mechanism 3, which includes a blower 31 fixed to the outer wall of the main body 1. The cleaning mechanism 3 also includes a cleaning disc 32, which is located at the bottom of the main body 1.

[0027] The cleaning mechanism 3 also includes an air supply pipe for connecting the blower 31 and the cleaning disc 32, and the cleaning disc 32 is rotatably connected to the air supply pipe.

[0028] Reference Figure 2 The cleaning mechanism 3 also includes an inclined nozzle 33, which is located on the side of the cleaning disc 32 facing the filter screen 34. It also includes a pipe mechanism 36, which includes a water inlet pipe 361 and a disinfectant inlet pipe 362, both of which are connected to the main body 1. It also includes a sealing cover 35, which is connected to the end of the water inlet pipe 361. It also includes a top cover 2, which is detachably installed on the top of the main body 1. The filter screen 34 is connected to the inner wall of the main body 1 by a side wall support structure.

[0029] The implementation principle of this application embodiment is as follows: When it is necessary to physically scrape and clean the inner wall of the filter screen 34, the motor 42 installed inside the support rod 41 is started, the motor 42 drives the pulley 43 to rotate, the pulley 43 drives the belt strip 44 to move cyclically, and since the connecting arm 45 is fixedly connected to the outer wall of the belt strip 44, the belt strip 44 drives the connecting arm 45 to move up and down, and the connecting arm 45 then drives the scraping ring 46 fixedly connected to its end to scrape up and down along the inner wall of the filter screen 34. Through this mechanical movement, the problem of difficult removal of stubborn dirt on the inner wall in the prior art is solved.

[0030] When gas backflushing cleaning is required, the blower 31 fixed on the outer wall of the main body 1 is started. High-pressure gas enters the cleaning disc 32 through the air supply pipe. Since the cleaning disc 32 is rotatably connected to the air supply pipe and the cleaning disc 32 is provided with an inclined nozzle 33, the reaction force generated when the high-pressure gas is ejected from the inclined nozzle 33 will drive the cleaning disc 32 to rotate automatically, forming a rotating impact airflow to backflush and clean the filter screen 34.

[0031] When liquid to be treated needs to be injected, the liquid enters the main body 1 of the equipment from the inlet pipe 361 through the sealing cover 35, and passes through the filter screen 34 to complete filtration. When chemical cleaning is required, the chemical solution is injected from the disinfectant inlet pipe 362. When manual maintenance is required, the top cover 2 can be removed for operation.

Claims

1. An ultrafiltration membrane cleaning device, comprising: Equipment body (1); A filter screen (34) is installed on the inner wall of the main body (1) of the device; and a scraping mechanism (4), which is disposed inside the filter screen (34); Its features are, The scraping mechanism (4) includes: Support rod (41), the support rod (41) is fixed to the bottom of the inner wall of the filter screen (34); Motor (42), the motor (42) is installed inside the support rod (41); A pulley (43) is driven to rotate by the motor (42); A belt strip (44) is arranged around the pulley (43); Connecting arm (45), the connecting arm (45) is fixedly connected to the outer wall of the belt strip (44); and a scraping ring (46), which is fixedly connected to the end of the connecting arm (45); The motor (42) drives the pulley (43) and the belt (44) to move in a cycle. The belt (44) drives the connecting arm (45) to move up and down. The connecting arm (45) drives the scraping ring (46) to scrape up and down along the inner wall of the filter screen (34).

2. The ultrafiltration membrane cleaning device according to claim 1, characterized in that, It also includes a cleaning mechanism (3), which comprises: Blower (31), the blower (31) is fixed to the outer wall of the main body of the equipment (1), And a cleaning tray (32), which is disposed at the bottom of the main body (1) of the device.

3. The ultrafiltration membrane cleaning device according to claim 2, characterized in that, The cleaning mechanism (3) also includes an air supply pipe for connecting the blower (31) and the cleaning disc (32), and the cleaning disc (32) is rotatably connected to the air supply pipe.

4. The ultrafiltration membrane cleaning device according to claim 2, characterized in that, The cleaning mechanism (3) also includes an inclined nozzle (33) which is located on the side of the cleaning disc (32) facing the filter (34).

5. The ultrafiltration membrane cleaning device according to claim 1, characterized in that, It also includes a pipeline mechanism (36), which includes a water inlet pipe (361) and a disinfectant inlet pipe (362), both of which are connected to the main body of the equipment (1).

6. The ultrafiltration membrane cleaning device according to claim 5, characterized in that, It also includes a sealing cap (35) which is connected to the end of the water inlet pipe (361).

7. The ultrafiltration membrane cleaning device according to claim 1, characterized in that, It also includes a top cover (2), which is detachably mounted on the top of the device body (1).

8. The ultrafiltration membrane cleaning device according to claim 1, characterized in that, The filter screen (34) is connected to the inner wall of the main body of the device (1) by a support structure on the side wall.

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