CN219050921U - MBR membrane curtain off-line self-cleaning device - Google Patents

Abstract

The utility model relates to the technical field of MBR (Membrane biological reactor) membrane cleaning equipment, in particular to an offline automatic cleaning device for an MBR membrane curtain. This MBR membrane curtain off-line self-cleaning device includes: a fixed base, a main body frame mechanism, a membrane curtain push-pull mechanism, a membrane curtain water flushing mechanism and a control unit. The offline automatic cleaning device for the MBR membrane curtain provided by the utility model can reduce labor intensity, has a good flushing effect, is high in working efficiency, is simple in structure, is economical and practical, and is convenient to popularize.

Description

MBR membrane curtain off-line self-cleaning device

Technical Field

The utility model relates to the technical field of MBR (Membrane biological reactor) membrane cleaning equipment, in particular to an offline automatic cleaning device for an MBR membrane curtain.

Background

The current MBR membrane blockage cleaning method mainly comprises the following steps: (1) and (3) physical cleaning: washing with water, aeration cleaning and ultrasonic cleaning; (2) chemical cleaning: sodium hypochlorite alkaline washing and hydrochloric acid washing. The offline cleaning process of the MBR membrane curtain of the sewage treatment plant mainly comprises the following steps: manual water washing-acid washing-alkali washing.

(1) The labor intensity of the manual water flushing workers is high, the working environment humidity is high, the air temperature in winter is low, and the working environment of the workers is poor. (2) The reclaimed water consumption of manual water flushing is large, the flushing effect is uneven, and the flushing is not clean. (3) Manual water flushing is an open operation, the flushed muddy water is wet and slippery on the ground everywhere, and potential safety hazards exist. (4) The membrane curtain needs to be detached one curtain after another to be flushed by manual water, and the working efficiency is low.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide an MBR membrane curtain off-line automatic cleaning device.

In order to solve the technical problems, the utility model provides an offline automatic cleaning device for an MBR membrane curtain, which comprises the following components:

a fixed base, which comprises a horizontal main frame, a reinforcing frame and two racks; the reinforcing frame is fixedly connected in the horizontal main frame, and the two racks are respectively arranged on the upper surfaces of two opposite frames of the horizontal main frame;

the main frame mechanism is positioned on the horizontal main frame and comprises a vertical main frame, a driving motor, a speed reducer, a driving bevel gear, a first transmission bevel gear, a first driven shaft, a first driven bearing, two second driven bevel gears, two vertical transmission structures and a main frame mechanism moving structure which is arranged at the bottom of the vertical main frame and used for enabling the main frame mechanism to move on two racks;

the vertical main frame consists of two rectangular side frames and two upper connecting cross bars; a motor shaft of the driving motor is in transmission connection with an input shaft of the speed reducer, and an output shaft of the speed reducer is in transmission connection with a first driven shaft through a first transmission bevel gear by a driving bevel gear; the first driven shaft is in transmission connection with the two vertical transmission structures through two second driven bevel gears respectively; the first driven shaft is fixed on the upper connecting cross rod of one of the first driven shafts through at least one first driven bearing; the first transmission bevel gear is arranged in the middle of the first driven shaft; the two second driven bevel gears are respectively arranged at two ends of the first driven shaft; the two vertical transmission structures are respectively arranged on the outer side surfaces of the two rectangular side frames; the main frame mechanism comprises a first laser sensor, a second laser sensor and a third laser sensor which are fixedly arranged on the vertical main frame and are respectively used for sensing the relative positions of the cleaning device and the film curtain

The film curtain push-pull mechanism comprises a film curtain push-pull main frame, a second stepping motor, two second stepping motor driving gears, two second stepping motor transmission gears, two second stepping motor driven gears, a second stepping motor gear limiting structure, a cable drag chain, two upper racks of the film curtain push-pull mechanism, a film curtain moving channel for leading a film curtain to be cleaned to enter and exit, and a film curtain grabbing structure, wherein the second stepping motor driving gears, the two second stepping motor driven gears and the second stepping motor limiting structure are arranged on the film curtain push-pull main frame;

the second stepping motor drives the second stepping motor drive gear to rotate through the second stepping motor drive gear so that the two second stepping motor drive gears respectively move on racks on the two film curtain push-pull mechanisms; the upper rack of the membrane curtain push-pull mechanism is fixed on an upper fixed bracket arranged on the vertical main frame; the two second stepping motor driving gears drive the two stepping motor driven gears to move on the rack on the membrane curtain push-pull mechanism through the second stepping motor gear limiting structure; one end of the cable drag chain is connected with the second stepping motor, and is used for internally arranging a cable to electrify the motor; the membrane curtain grabbing structure is arranged on the membrane curtain push-pull main frame in a grabbing direction which is the entering direction of the membrane curtain to be cleaned;

a membrane curtain flushing mechanism which comprises a booster pump and two spray head water separators; the water outlets of the booster pumps are respectively communicated with the water inlets of the two spray head water separators; the two spray head water separators are respectively arranged on the vertical transmission structure so as to move in the vertical direction;

and the control unit is respectively and electrically connected with the driving motor, the speed reducer, the first stepping motor, the first laser sensor, the second laser sensor, the third laser sensor, the second stepping motor, the film curtain grabbing structure and the booster pump.

In a more preferred embodiment, the vertical transmission structure comprises two third driven bevel gears, two upper chain wheels, a second driven shaft, at least one second driven shaft bearing, two driven chain two lower chain wheels, a third driven shaft and at least one third driven shaft bearing;

the second driven shaft and the third driven shaft are respectively fixed on an upper cross rod and a lower cross rod of two rectangular side frames of one of the second driven shaft bearings and the third driven shaft bearings through at least one second driven shaft bearing, the third driven bevel gears are fixed on the second driven shaft, two upper chain wheels are respectively fixed at two end parts of the second driven shaft, two lower chain wheels are respectively fixed at two end parts of the third driven shaft, the second driven bevel gears are in transmission connection with the second driven shaft through the third driven bevel gears, and the two upper chain wheels are in transmission connection with the two lower chain wheels through two driven chains respectively so that the two upper chain wheels and the two lower chain wheels synchronously rotate.

In a more preferred embodiment, the main frame mechanism moving structure includes a main frame gear limiting structure disposed at the bottom of the two rectangular side frames, a first stepper motor disposed on the two rectangular side frames, a first stepper motor driving gear, a first stepper motor driven gear, and a first stepper motor driving shaft; the first stepping motor is in transmission connection with the first stepping motor driving gear through a first stepping motor driving gear, and the first stepping motor driving gear is in transmission connection with the first stepping motor driven gear through a first stepping motor transmission shaft and enables the first stepping motor driving gear and the first stepping motor driven gear to move on the two racks.

In a more preferred embodiment, the main frame gear limiting structure includes four fixed cross bars, which are respectively located at two sides of the first stepper motor driving gear and the first stepper motor driven gear and are fixed on the vertical main frame, and the first stepper motor driving shaft is arranged on the four fixed cross bars in a penetrating manner, so that the first stepper motor driving gear and the first stepper motor driven gear are respectively limited between the two fixed cross bars located at two sides of the respective gears to move along the laying direction of the racks.

In a more preferred embodiment, the main frame mechanism comprises a lower limit switch and an upper limit switch which are fixedly arranged on the vertical main frame and are respectively used for sensing the position of the spray head water separator in the vertical direction so as to control the flushing height of the spray head water separator.

In a more preferred embodiment, the membrane curtain push-pull mechanism further comprises a membrane curtain push-pull main frame driven structure, which comprises a lower fixed bracket arranged on the vertical main frame, two membrane curtain push-pull mechanism lower racks arranged on the lower fixed bracket, at least two membrane curtain push-pull mechanism bearing gears moving on the membrane curtain push-pull mechanism lower racks, a membrane curtain push-pull mechanism bearing gear limiting structure, and a first limit switch and a second limit switch respectively arranged on the at least one membrane curtain push-pull mechanism lower racks and used for limiting the back and forth movement range of the membrane curtain push-pull main frame on the two membrane curtain push-pull mechanism lower racks; the two-film curtain push-pull mechanism bearing gear drives the two-film curtain push-pull mechanism bearing driven gear to move on the lower rack of the film curtain push-pull mechanism through the film curtain push-pull mechanism bearing gear limiting structure.

In a more preferred embodiment, the membrane curtain moving channel comprises a membrane curtain upper roller moving groove fixed on the upper fixed support and a membrane curtain lower roller moving groove opposite to the membrane curtain upper roller moving groove and fixed on the lower fixed support, so that the upper roller and the lower roller of the membrane curtain to be cleaned can move in the groove.

In a more preferred embodiment, the membrane curtain grabbing structure comprises a membrane curtain grabbing claw arranged on the membrane curtain push-pull main frame, a membrane curtain grabbing control cylinder and a membrane curtain grabbing claw air pipe connecting the membrane curtain grabbing claw and the membrane curtain grabbing control cylinder.

In a preferred embodiment, a said jet head water separator communicates with said booster pump through a water flush pressure hose main; the other nozzle water separator is communicated with the booster pump through a water flushing pressure-bearing hose main pipe and a water flushing pressure-bearing hose branch pipe arranged on the water flushing pressure-bearing hose main pipe in sequence.

In a more preferred embodiment, at least one row of spray heads arranged at intervals is arranged on any spray head water distributor.

To sum up, the application provides a MBR membrane curtain off-line self-cleaning device, put MBR membrane curtain off-line self-cleaning equipment in parallel in MBR membrane module one side, draw the membrane curtain from the MBR membrane module frame voluntarily, wash from top to bottom voluntarily, push back the membrane curtain in the MBR membrane module frame voluntarily, automatic removal cleaning equipment, draw out, wash, push back the membrane curtain in the MBR membrane module frame voluntarily with next curtain, wash one time in proper order, it includes following at least one beneficial technical effect:

(1) the film curtain is automatically pulled out and automatically moved up and down to be washed by water, and the film curtain is automatically pushed back, so that the washing effect is good and the labor intensity is low;

(2) the automatic cleaning equipment can automatically move and be positioned to the position of the next membrane curtain, the membrane curtain repeatedly works, the structure of the mechanism is simple, the labor intensity of workers is reduced, and the working efficiency is improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

For a clearer description of embodiments of the utility model or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art; the positional relationships described in the drawings in the following description are based on the orientation of the elements shown in the drawings unless otherwise specified.

Fig. 1 is a schematic structural diagram of an offline automatic cleaning device for an MBR membrane curtain according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a fixing base according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a main frame mechanism according to an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of the structure shown in FIG. 3A;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 3;

FIG. 6 is an enlarged schematic view of the structure at C in FIG. 3;

FIG. 7 is a schematic diagram of a push-pull mechanism of a membrane curtain according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a membrane curtain flushing mechanism according to an embodiment of the present utility model.

Reference numerals:

1. a fixed base; 11. a horizontal main frame; 12. reinforcing the frame; 13. a rack; 2. a main frame mechanism; 21. a vertical main frame; 21a, rectangular side frames; 21b, upper connecting cross bars; 21c, an upper fixing bracket; 21d, a lower fixing bracket; 22. a driving motor; 23. a speed reducer; 24. driving a bevel gear; 25. a first drive bevel gear; 26. a first driven shaft; 27. a first driven bearing; 28. a second driven bevel gear; 29. a third driven bevel gear; 210. an upper sprocket; 211. a second driven shaft; 212. a second driven shaft bearing; 213. a driven chain; 214. a lower sprocket; 215. a third driven shaft; 216. a third driven shaft bearing; 217. a first stepping motor; 218. a first stepper motor drive gear; 219. a first stepper motor drive gear; 220. a first stepper motor driven gear; 221. a first stepper motor drive shaft; 222. fixing the cross bar; 223. a lower limit switch; 224. an upper limit switch; 225. a first laser sensor; 226. a second laser sensor; 227. a third laser sensor; 3. a membrane curtain push-pull mechanism; 31. the membrane curtain pushes and pulls the main frame; 32. a second stepping motor; 33. a second stepping motor driving gear; 34. a second stepper motor drive gear; 35. a second stepper motor driven gear; 36. a gear limiting structure of the second stepping motor; 37. a cable drag chain; 38. the membrane curtain push-pull mechanism is provided with a rack; 39. a lower rack of the membrane curtain push-pull mechanism; 310. a roller moving groove on the film curtain; 311. a roller moving groove under the film curtain; 312. film curtain grabbing claws; 313. a membrane curtain grabbing claw air pipe; 314. bearing gear of film curtain push-pull mechanism; 315. a membrane curtain push-pull mechanism bearing gear limit structure; 316. a first limit switch; 317. a second limit switch; 4. a membrane curtain flushing mechanism; 41. a booster pump; 42. a spray head water separator; 43. flushing the main pipe of the pressure-bearing hose with water; 44. flushing the pressure-bearing hose branch pipes with water; 45. a spray head;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model; the technical features designed in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that all terms used in the present utility model (including technical terms and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the present utility model belongs and are not to be construed as limiting the present utility model; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The different embodiments disclosed below may reuse the same reference symbols and/or labels. These repetition are for the purpose of simplicity and clarity and do not in itself dictate a particular relationship between the various embodiments and/or configurations discussed.

Referring to fig. 1 to 8, an embodiment of the present utility model provides an MBR membrane curtain offline automatic cleaning device, including: a fixed base 1, a main body frame mechanism 2, a membrane curtain push-pull mechanism 3, a membrane curtain flushing mechanism 4 and a control unit 5;

the main body frame mechanism 2 moves on the fixed base 1, the MBR membrane curtain is grabbed and pulled out by the membrane curtain push-pull mechanism 3 by being positioned at the position of the membrane curtain, the nozzle of the membrane curtain flushing mechanism 4 moves along with the up-and-down movement of the chain of the main body frame mechanism 2 so as to drive the nozzle to move together, the membrane curtain push-pull mechanism 3 pushes the MBR membrane curtain back into the MBR membrane module frame to automatically complete the cleaning work, the main body frame mechanism 2 moves forwards and is positioned at the position of the next membrane curtain, and the equipment repeatedly completes the processes of pulling out, flushing, pushing back, moving positioning and the like, so that the automatic cleaning of the MBR membrane module is finally realized;

specifically, in the present embodiment, the fixing base 1 includes a horizontal main frame 11, a reinforcing frame 12, and two racks 13; the horizontal main frame 11 may be rectangular, square, etc., preferably rectangular; the reinforcing frame 12 is fixedly connected to the inside of the horizontal main frame 11, for example, in a cross structure, and is used for reinforcing the horizontal main frame 11, and the two racks 13 are respectively arranged on the upper surfaces of two opposite edges of the horizontal main frame 11, and the arrangement mode can be that the two racks 13 are respectively welded on the upper surfaces of two long edges of the horizontal main frame 11; preferably, the frame material of the fixing base 1 is steel;

referring to fig. 1, 3 to 6, the main frame mechanism 2 is disposed on the horizontal main frame 11 and includes a vertical main frame 21, a driving motor 22, a speed reducer 23, a driving bevel gear 24, a first driving bevel gear 25, a first driven shaft 26, a first driven bearing 27, two second driven bevel gears 28, two vertical driving structures, and a main frame mechanism moving structure disposed at the bottom of the vertical main frame 21 for moving the main frame mechanism on the two racks 13;

the vertical main frame 21 is composed of two rectangular side frames 21a and two upper connecting cross bars 21 b; the motor shaft of the driving motor 22 is in transmission connection with the input shaft of the speed reducer 23, preferably, the driving motor is a three-phase motor, and the output shaft of the speed reducer 23 is in transmission connection with the first driven shaft 26 through the driving bevel gear 24 and the first transmission bevel gear 25; the first driven shaft 26 is in transmission connection with two vertical transmission structures through two second driven bevel gears 28 respectively; the first driven shaft 26 is fixed to the upper connecting rail 21b of one of them by at least one first driven bearing 27; the first transmission bevel gear 25 is arranged in the middle of the first driven shaft 26; the two second driven bevel gears 28 are respectively arranged at two ends of the first driven shaft 26; the two vertical transmission structures are respectively arranged on the outer side surfaces of the two rectangular side frames 21 a;

the vertical transmission structure comprises two third driven bevel gears 29, two upper chain wheels 210, a second driven shaft 211, at least one second driven shaft bearing 212, two driven chains 213, two lower chain wheels 214, a third driven shaft 215 and at least one third driven shaft bearing 216;

the second driven shaft 211 and the third driven shaft 215 are respectively fixed on an upper cross bar and a lower cross bar of the two rectangular side frames 21a of one of the two driven shafts through at least one second driven shaft bearing 212 and at least one third driven shaft bearing 216, the third driven bevel gear 29 is fixed on the second driven shaft 211, the two upper chain wheels 210 are respectively fixed on two end parts of the second driven shaft 211, the two lower chain wheels 214 are respectively fixed on two end parts of the third driven shaft 215, the two end parts are respectively divided into a left part, a middle part and a right part, the two end parts are respectively a left part and a right part, generally, the left part, the middle part and the right part can be three-section equally divided, the left part and the right part respectively occupy 1/4, the middle part occupies 1/2 and the like, the second driven bevel gear 28 is in transmission connection with the second driven shaft 211 through the third driven bevel gear 29, the two upper chain wheels 210 are respectively in transmission connection with the two lower chain wheels 214 through the two driven bevel gears 213, so that the two upper chain wheels 210 and the two lower chain wheels 214 synchronously rotate.

The main frame mechanism moving structure comprises a main frame gear limiting structure arranged at the bottom of the two rectangular side frames 21a, a first stepping motor 217 arranged on the two rectangular side frames 21a, a first stepping motor driving gear 218, a first stepping motor driving gear 219, a first stepping motor driven gear 220 and a first stepping motor transmission shaft 221; the first stepper motor 217 is in transmission connection with the first stepper motor drive gear 219 through a first stepper motor drive gear 218, the first stepper motor drive gear 219 is in transmission connection with the first stepper motor driven gear 220 through a first stepper motor drive shaft 221 and enables the first stepper motor drive gear 219 and the first stepper motor driven gear 220 to move on the two racks 13;

the main frame gear limiting structure comprises four fixed cross bars 222 which are respectively positioned at two sides of the first stepping motor driving gear 219 and the first stepping motor driven gear 220 and are fixed on the vertical main frame 21, and the first stepping motor driving shaft 221 is arranged on the four fixed cross bars 222 in a penetrating way, so that the first stepping motor driving gear 219 and the first stepping motor driven gear 220 are respectively limited between the two fixed cross bars 222 positioned at two sides of the respective gears to move along the laying direction of the racks 13.

The main frame mechanism 2 includes a lower limit switch 223 and an upper limit switch 224 fixed on the vertical main frame 21, which are respectively used for sensing the position of the nozzle water knockout drum 42 in the vertical direction to control the flushing height of the nozzle water knockout drum 42, specifically, when the driven chain 213 drives the nozzle water knockout drum 42 to move up to the upper limit switch 224, the phase sequence of the three-phase motor is changed, thereby realizing the inversion of the three-phase motor, and the driven chain 213 and the nozzle water knockout drum 42 are driven to move down, when the driven chain 213 moves down to the lower limit switch 223, the phase sequence of the three-phase motor is changed again, thereby enabling the nozzle water knockout drum 42 to move up and down;

the main frame mechanism 2 includes a first laser sensor 225, a second laser sensor 226 and a third laser sensor 227 fixed on the vertical main frame 21, which are respectively used for sensing the relative positions of the cleaning device and the membrane curtain, specifically, as shown in fig. 5, the sensors are sequentially disposed on the lower fixing support 21d, where the sensing conditions of the sensors are as follows:

first, when the first laser sensor 225 senses the film component, the second laser sensor 226 and the third laser sensor 227 do not sense the film component, and the first stepper motor 217 continuously drives the main body frame mechanism 2 to advance;

secondly, when the first laser sensor 225 and the second laser sensor 226 sense the film component, the third laser sensor 227 does not sense the film component, and the film curtain push-pull mechanism 3 can start to work;

third, when the first laser sensor 225 and the second laser sensor 226 do not sense the film assembly, the third laser sensor 227 senses the film assembly, which indicates that the film curtain is completely cleaned.

Referring to fig. 7, the membrane curtain push-pull mechanism 3 includes a membrane curtain push-pull main frame 31, a second stepper motor 32, two second stepper motor driving gears 33, two second stepper motor driving gears 34, two second stepper motor driven gears 35, a second stepper motor gear limiting structure 36, a cable drag chain 37, two membrane curtain push-pull mechanism upper racks 38, a membrane curtain moving channel for the membrane curtain to be cleaned to enter and exit, and a membrane curtain grabbing structure;

the second stepping motor 32 drives the second stepping motor driving gear 34 to rotate through the second stepping motor driving gear 33, so that the two second stepping motor driving gears 34 respectively move on the racks 38 on the two film curtain push-pull mechanism; the upper rack 38 of the membrane curtain push-pull mechanism is fixed on an upper fixed bracket 21c arranged on the vertical main frame 21; the two second stepping motor transmission gears 34 drive the two stepping motor driven gears 35 to move on the rack 38 on the membrane curtain push-pull mechanism through the second stepping motor gear limiting structure 36; one end of the cable drag chain 37 is connected with the second stepping motor 32, which is used for embedding a cable to energize the motor; the membrane curtain grabbing structure is arranged on the membrane curtain push-pull main frame 31 in a grabbing direction which is the direction of entering the membrane curtain to be cleaned;

the membrane curtain push-pull mechanism 3 further comprises a membrane curtain push-pull main frame driven structure, which comprises a lower fixed bracket 21d arranged on the vertical main frame 21, two membrane curtain push-pull mechanism lower racks 39 arranged on the lower fixed bracket 21d, at least two membrane curtain push-pull mechanism bearing gears 314 moving on the membrane curtain push-pull mechanism lower racks 39, a membrane curtain push-pull mechanism bearing gear limiting structure 315, and a first limit switch 316 and a second limit switch 317 which are respectively arranged on the at least one membrane curtain push-pull mechanism lower racks 39 and used for limiting the back and forth movement range of the membrane curtain push-pull main frame 31 on the two membrane curtain push-pull mechanism lower racks 39; the two membrane curtain push-pull mechanism bearing gear 314 drives the two membrane curtain push-pull mechanism bearing driven gear to move on the membrane curtain push-pull mechanism lower rack 39 through the membrane curtain push-pull mechanism bearing gear limiting structure 315;

the membrane curtain moving channel comprises a membrane curtain upper roller moving groove 310 fixed on the upper fixed bracket 21c and a membrane curtain lower roller moving groove 311 which is opposite to the membrane curtain upper roller moving groove and fixed on the lower fixed bracket 21d, so that the upper roller and the lower roller of the membrane curtain to be cleaned can move in the groove;

the membrane curtain grabbing structure comprises a membrane curtain grabbing claw 312, a membrane curtain grabbing control cylinder and a membrane curtain grabbing claw air pipe 313, wherein the membrane curtain grabbing claw 312 is arranged on the membrane curtain push-pull main frame 31, and the membrane curtain grabbing claw air pipe is connected with the membrane curtain grabbing claw 312 and the membrane curtain grabbing control cylinder; in this embodiment, the number of the film curtain gripping claws 312 is 4, and the number of the gripping claws can be adaptively adjusted;

when the membrane curtain push-pull mechanism 3 starts to work, the second stepper motor 32 transmits power to the second stepper motor transmission gear 34 through the second stepper motor driving gear 33, and the second stepper motor driven gear 35 connected through the second stepper motor gear limiting structure 36 also synchronously follows the rotation of the second stepper motor transmission gear 34, so that four gears respectively move towards the membrane curtain on the upper rack 38 of the second membrane curtain push-pull mechanism, and it should be noted that in the embodiment, the bottom of the membrane curtain push-pull main frame 31 is provided with a membrane curtain push-pull main frame driven structure, the structure comprises four membrane curtain push-pull mechanism bearing gears 314 and a membrane curtain push-pull mechanism bearing gear limiting structure 315 connected with the four membrane curtain push-pull mechanism bearing gears 314, and the four membrane curtain push-pull mechanism bearing gears 314 are limited to move on the lower rack 39 of the second membrane curtain push-pull mechanism, thereby forming a moving mode of an upper and lower eight gears, when the membrane curtain main frame 31 reaches the second limiting switch 317, the membrane curtain grasping claws 312 simultaneously start to grasp the membrane curtain, and after the membrane curtain 32 drives the membrane curtain frame 31 to move towards the membrane curtain 31 and the membrane curtain frame 31 to move towards the lower groove 310, and when the membrane curtain 31 moves towards the membrane curtain 31 and the membrane curtain frame 31 moves towards the lower groove 310; and then starting the membrane curtain flushing mechanism 4 to clean the membrane curtain, and pushing the membrane curtain back to the MBR membrane curtain after the membrane curtain is cleaned.

While in some other embodiments, it may be formed by only four gears, specifically, the second stepper motor gear limit structure 36 is slidably hung on the rack 38 on the two membrane curtain push-pull mechanism, so that the membrane curtain push-pull main frame 31 is not dropped to be hung, and thus, the movement of the membrane curtain push-pull mechanism 3 can be realized by only four gears located on the top of the membrane curtain push-pull main frame 31;

referring to fig. 8, the membrane curtain flushing mechanism 4 includes a booster pump 41 and two nozzle water distributors 42; the water outlets of the booster pumps 41 are respectively communicated with the water inlets of the two nozzle water splitters 42; the two nozzle splitters 42 are respectively installed on the vertical transmission structure so as to move in the vertical direction;

the nozzle water separator 42 is communicated with the booster pump 41 through a water flushing pressure-bearing hose main pipe 43; the other nozzle water separator 42 is communicated with the booster pump 41 through a water flushing pressure-bearing hose main pipe 43 and a water flushing pressure-bearing hose branch pipe 44 arranged on the water flushing pressure-bearing hose main pipe 43 in sequence;

at least one row of spray heads 45 arranged at intervals are arranged on any spray head water distributor 42.

A control unit 5 electrically connected to the driving motor 22, the speed reducer 23, the first stepping motor 217, the first laser sensor 225, the second laser sensor 226, the third laser sensor 227, the second stepping motor 32, the film curtain gripping structure, and the booster pump 41, respectively, for off-line automatic cleaning.

In addition, it should be understood by those skilled in the art that although many problems exist in the prior art, each embodiment or technical solution of the present utility model may be modified in only one or several respects, without having to solve all technical problems listed in the prior art or the background art at the same time. Those skilled in the art will understand that nothing in one claim should be taken as a limitation on that claim.

Although terms such as a base, a frame, a rack, a rail, a drive motor, a drive bevel gear, a driven shaft, a driven bearing, a sprocket, a limit switch, a sensor, a stepper motor, a head water separator, etc. are more used herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model; the terms first, second, and the like in the description and in the claims of embodiments of the utility model and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. An offline automatic cleaning device for an MBR membrane curtain, which is characterized by comprising:

a fixed base (1) comprising a horizontal main frame (11), a reinforcing frame (12), and two racks (13); the reinforcing frame (12) is fixedly connected inside the horizontal main frame (11), and the two racks (13) are respectively arranged on the upper surfaces of two opposite frames of the horizontal main frame (11);

the main frame mechanism (2) is positioned on the horizontal main frame (11) and comprises a vertical main frame (21), a driving motor (22), a speed reducer (23), a driving bevel gear (24), a first transmission bevel gear (25), a first driven shaft (26), a first driven bearing (27), two second driven bevel gears (28), two vertical transmission structures and a main frame mechanism moving structure which is arranged at the bottom of the vertical main frame (21) and used for enabling the main frame mechanism to move on the two racks (13);

the vertical main frame (21) is composed of two rectangular side frames (21 a) and two upper connecting cross bars (21 b); a motor shaft of the driving motor (22) is in transmission connection with an input shaft of a speed reducer (23), and an output shaft of the speed reducer (23) is in transmission connection with a first driven shaft (26) through a first transmission bevel gear (25) by a driving bevel gear (24); the first driven shaft (26) is in transmission connection with the two vertical transmission structures through two second driven bevel gears (28) respectively; the first driven shaft (26) is fixed on the upper connecting cross bar (21 b) of one of the driven shafts through at least one first driven bearing (27); the first transmission bevel gear (25) is arranged in the middle of the first driven shaft (26); the two second driven bevel gears (28) are respectively arranged at two ends of the first driven shaft (26); the two vertical transmission structures are respectively arranged on the outer side surfaces of the two rectangular side frames (21 a); the main frame mechanism (2) comprises a first laser sensor (225), a second laser sensor (226) and a third laser sensor (227) which are fixedly arranged on the vertical main frame (21) and are respectively used for sensing the relative positions of the cleaning device and the membrane curtain

The film curtain push-pull mechanism (3) comprises a film curtain push-pull main frame (31), a second stepping motor (32), two second stepping motor driving gears (33), two second stepping motor transmission gears (34), two second stepping motor driven gears (35), a second stepping motor gear limiting structure (36), a cable drag chain (37), two film curtain push-pull mechanism upper racks (38), a film curtain moving channel for the film curtain to be cleaned to enter and exit, and a film curtain grabbing structure;

the second stepping motor (32) drives the second stepping motor transmission gear (34) to rotate through the second stepping motor driving gear (33), so that the two second stepping motor transmission gears (34) respectively move on racks (38) on the two film curtain push-pull mechanisms; the upper rack (38) of the membrane curtain push-pull mechanism is fixed on an upper fixed bracket (21 c) arranged on the vertical main frame (21); the two second stepping motor driving gears (34) drive the two stepping motor driven gears (35) to move on the rack (38) on the membrane curtain push-pull mechanism through the second stepping motor gear limiting structure (36); one end of a cable drag chain (37) is connected with a second stepping motor (32) and is used for embedding a cable to electrify a motor; the membrane curtain grabbing structure is arranged on the membrane curtain push-pull main frame (31) with the direction of entering the membrane curtain to be cleaned as the grabbing direction;

a membrane curtain flushing mechanism (4) comprising a booster pump (41) and two nozzle water splitters (42); the water outlets of the booster pumps (41) are respectively communicated with the water inlets of the two nozzle water splitters (42); the two spray head water separators (42) are respectively arranged on the vertical transmission structure so as to move in the vertical direction;

a control unit (5) electrically connected with the driving motor (22), the speed reducer (23), the first stepping motor (217), the first laser sensor (225), the second laser sensor (226), the third laser sensor (227), the second stepping motor (32), the film curtain grabbing structure and the booster pump (41), respectively.

2. The MBR membrane curtain offline automatic cleaning device according to claim 1, wherein: the vertical transmission structure comprises two third driven bevel gears (29), two upper chain wheels (210), a second driven shaft (211), at least one second driven shaft bearing (212), two driven chains (213), two lower chain wheels (214), a third driven shaft (215) and at least one third driven shaft bearing (216);

the second driven shaft (211) and the third driven shaft (215) are respectively fixed on an upper cross rod and a lower cross rod of two rectangular side frames (21 a) of one of the second driven shaft bearings (212) and the third driven shaft bearings (216), the third driven bevel gears (29) are fixed on the second driven shaft (211), the two upper chain wheels (210) are respectively fixed at two end parts of the second driven shaft (211), the two lower chain wheels (214) are respectively fixed on two end parts of the third driven shaft (215), the second driven bevel gears (28) are in transmission connection with the second driven shaft (211) through the third driven bevel gears (29), and the two upper chain wheels (210) are respectively in transmission connection with the two lower chain wheels (214) through two driven chains (213), so that the two upper chain wheels (210) and the two lower chain wheels (214) synchronously rotate.

3. The MBR membrane curtain offline automatic cleaning device according to claim 1, wherein: the main frame mechanism moving structure comprises a main frame gear limiting structure arranged at the bottom of the two rectangular side frames (21 a), a first stepping motor (217), a first stepping motor driving gear (218), a first stepping motor driving gear (219), a first stepping motor driven gear (220) and a first stepping motor transmission shaft (221) which are arranged on the two rectangular side frames (21 a); the first stepping motor (217) is in transmission connection with the first stepping motor transmission gear (219) through a first stepping motor driving gear (218), the first stepping motor transmission gear (219) is in transmission connection with the first stepping motor driven gear (220) through a first stepping motor transmission shaft (221), and the first stepping motor transmission gear (219) and the first stepping motor driven gear (220) are enabled to move on the two racks (13).

4. An MBR membrane curtain off-line automatic cleaning device according to claim 3, characterized in that: the main frame gear limiting structure comprises four fixed cross bars (222), wherein the four fixed cross bars are respectively positioned on two sides of a first stepping motor transmission gear (219) and a first stepping motor driven gear (220) and are fixed on a vertical main frame (21), and a first stepping motor transmission shaft (221) is arranged on the four fixed cross bars (222) in a penetrating mode, so that the first stepping motor transmission gear (219) and the first stepping motor driven gear (220) are respectively limited between the two fixed cross bars (222) positioned on two sides of the respective gears to move along the laying direction of the racks (13).

5. The MBR membrane curtain offline automatic cleaning device according to claim 1, wherein: the main frame mechanism (2) comprises a lower limit switch (223) and an upper limit switch (224) which are fixedly arranged on the vertical main frame (21), and the lower limit switch and the upper limit switch are respectively used for sensing the position of the spray head water separator (42) in the vertical direction so as to control the flushing height of the spray head water separator (42).

6. The MBR membrane curtain offline automatic cleaning device according to claim 1, wherein: the membrane curtain push-pull mechanism (3) further comprises a membrane curtain push-pull main frame driven structure, and comprises a lower fixed support (21 d) arranged on the vertical main frame (21), two membrane curtain push-pull mechanism lower racks (39) arranged on the lower fixed support (21 d), at least two membrane curtain push-pull mechanism bearing gears (314) moving on the membrane curtain push-pull mechanism lower racks (39), a membrane curtain push-pull mechanism bearing gear limiting structure (315), and a first limit switch (316) and a second limit switch (317) which are respectively arranged on the at least one membrane curtain push-pull mechanism lower racks (39) and used for limiting the back and forth movement range of the membrane curtain push-pull main frame (31) on the two membrane curtain push-pull mechanism lower racks (39); the bearing gear (314) of the two film curtain push-pull mechanism drives the bearing driven gear of the two film curtain push-pull mechanism to move on the lower rack (39) of the film curtain push-pull mechanism through the bearing gear limiting structure (315) of the film curtain push-pull mechanism.

7. The MBR membrane curtain off-line automatic cleaning device of claim 6, wherein: the film curtain moving channel comprises a film curtain upper roller moving groove (310) fixed on the upper fixed support (21 c) and a film curtain lower roller moving groove (311) which is opposite to the film curtain upper roller moving groove and fixed on the lower fixed support (21 d) so as to enable upper and lower rollers of the film curtain to be cleaned to move in the groove.

8. The MBR membrane curtain offline automatic cleaning device according to claim 1, wherein: the membrane curtain grabbing structure comprises a membrane curtain grabbing claw (312) arranged on a membrane curtain push-pull main frame (31), a membrane curtain grabbing control cylinder and a membrane curtain grabbing claw air pipe (313) connected with the membrane curtain grabbing claw (312) and the membrane curtain grabbing control cylinder.

9. The MBR membrane curtain offline automatic cleaning device according to claim 1, wherein: the nozzle water separator (42) is communicated with the booster pump (41) through a water flushing pressure-bearing hose main pipe (43); the other nozzle water separator (42) is communicated with the booster pump (41) through a main water flushing pressure-bearing hose pipe (43) and a branch water flushing pressure-bearing hose pipe (44) arranged on the main water flushing pressure-bearing hose pipe (43) in sequence.

10. The MBR membrane curtain offline automatic cleaning device according to claim 9, wherein: at least one row of spray heads (45) which are arranged at intervals are arranged on any spray head water distributor (42).

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