Cloth bag type centrifugal water treatment device

Abstract

A cloth bag type centrifugal water treatment device comprises a hood, a filtering assembly and a cleaning assembly, a water inlet pipe is arranged at the top of the hood, and a blow-off pipe and a water outlet are arranged at the bottom of the hood; the filtering assembly comprises a first cloth bag filter rotationally arranged in the hood and driven by a first driving motor and a second cloth bag filter sleeved with the first cloth bag filter; the top and bottom of the first cloth bag filter are respectively communicated with the water inlet pipe and the blow-off pipe, and an inner cavity of the first cloth bag filter forms a first filter chamber; a second filter chamber is formed between the first cloth bag filter and the second cloth bag filter, and a drainage chamber is formed between the second cloth bag filter and the inner wall of the hood; the cleaning assembly comprises a first brush which abuts against the inner wall of the first cloth bag filter and is driven by a telescopic driving piece to ascend and descend, a second brush which abuts against the outer wall of the first cloth bag filter and is driven by a second driving motor to rotate, a third brush which abuts against the inner wall of the second cloth bag filter, and a fourth brush which abuts against the outer wall of the second cloth bag filter. And the third driving motor is used for driving the third brush and the fourth brush to reversely rotate at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially is concerned with a cloth bag type centrifugal water treatment device. BACKGROUND

[0002] Sewage filtration is an important link of sewage treatment, which is used to filter out particles and impurities in water to improve the purity of water. At present, filters are used to filter sewage in the industry. A plurality of filter screens with different pore sizes are arranged in the filter. When the sewage flows through each filter screen, the impurities of different particle sizes in the water are trapped on one side of the filter screen to filter out the particle impurities in the water in stages. However, due to the size limitation of the filter screen and the interval arrangement between the multiple filter screens, the above-mentioned filter has a large volume and occupies a large area, which increases the difficulty of equipment arrangement in the plant. In addition, after the above-mentioned filter is used for a period of time, a large amount of impurities is attached to the filter screen. If the filter screen is not cleaned in time, the filter screen holes will be blocked, and even the filter screen will be damaged due to the increased load, which will affect the filtering efficiency of the filter. Therefore, the filter needs to be regularly stopped for maintenance, and the dirt on the filter screen is cleaned by manual work. The time for manual cleaning of the filter screen is long and the efficiency is low, which further affects the working efficiency of the filter. SUMMARY

[0003] Therefore, it is necessary to provide a cloth bag type centrifugal water treatment device with small volume, high working efficiency and automatic dirt cleaning function in view of the above-mentioned shortcomings.

[0004] A cloth bag type centrifugal water treatment device comprises:

[0005] A machine cover is provided with a water inlet pipe at the top for connecting the sewage to be treated and communicating with the inner cavity of the machine cover, and a sewage discharge pipe and a water outlet at the bottom of the machine cover, which are in communication with the inner cavity of the machine cover and can be opened or closed.

[0006] A filter assembly comprises a first cloth bag filter and a second cloth bag filter received in the inner cavity of the machine cover and rotatable relative to the machine cover, a first driving motor installed at the top of the machine cover and used to drive the first cloth bag filter to rotate, the top of the first cloth bag filter is in communication with the water inlet pipe, the bottom of the first cloth bag filter is in communication with the sewage discharge pipe, and the inner cavity of the first cloth bag filter forms a first filter chamber; the second cloth bag filter is sleeved on the periphery of the first cloth bag filter, and a second filter chamber for receiving the filtrate of the first cloth bag filter is formed between the second cloth bag filter and the first cloth bag filter, and a drainage chamber in communication with the water outlet is formed between the second cloth bag filter and the inner side wall of the machine cover; and

[0007] The cleaning assembly comprises a first brush installed in the first filtering chamber and abutting against the inner surface of the first cloth bag filter, a second brush passing through the top of the machine cover and being inserted into the second filtering chamber and abutting against the outer surface of the first cloth bag filter, a third brush passing through the top of the machine cover and being inserted into the second filtering chamber and abutting against the inner surface of the second cloth bag filter, a fourth brush passing through the top of the machine cover and being inserted into the drainage chamber and abutting against the outer surface of the second cloth bag filter, a telescopic drive arranged above the machine cover and being drivingly connected with the first brush to drive the first brush to ascend and descend in the first filtering chamber, a second driving motor installed on the top of the machine cover and being used to drive the second brush to rotate, and a third driving motor installed on the top of the machine cover and being used to drive the third brush and the fourth brush to rotate simultaneously, the third brush and the fourth brush rotating in opposite directions.

[0008] In one of the embodiments, the first cloth bag filter comprises a first roller and a first cloth bag sleeved on the first roller, the top of the first roller is communicated with the water inlet pipe, the bottom of the first roller is communicated with the sewage pipe, a plurality of first through holes are formed in the sidewall of the first roller and communicated with the first filtering chamber and the second filtering chamber, and the top of the first roller is drivingly connected with the first driving motor.

[0009] In one of the embodiments, the filtering assembly further comprises a first mounting bracket fixed on the top of the machine cover, the first driving motor is fixed on the first mounting bracket, a first driving pulley is fixedly installed on the output shaft of the first driving motor, a first driven pulley is fixedly sleeved on the top of the first roller, and a first transmission belt is spanned between the first driving pulley and the first driven pulley.

[0010] In one of the embodiments, the second cloth bag filter comprises a second roller and a second cloth bag sleeved on the second roller, the top of the second roller is rollingly matched with the inner wall of the top of the machine cover through first rolling balls, the bottom inner wall of the machine cover is provided with an annular limiting groove, the bottom of the second roller is inserted into the annular limiting groove and rollingly matched with the inner wall of the annular limiting groove through second rolling balls, and a plurality of second through holes are formed in the sidewall of the second roller and communicated with the second filtering chamber and the drainage chamber.

[0011] In one of the embodiments, the cleaning assembly further comprises a second mounting bracket, the second driving motor is fixed on the second mounting bracket, a second driving pulley is fixedly installed on the output shaft of the second driving motor, a second driven pulley is fixedly sleeved on the top of the second roller, and a second transmission belt is spanned between the second driving pulley and the second driven pulley.

[0012] In one of the embodiments, the second mounting frame comprises a base fixed on the top of the cover and a stand mounted on the base, the second roller is fixed on the stand, the base is provided with a sliding rail, the bottom of the stand is provided with a sliding block in sliding fit with the sliding rail, and the base is provided with a locking member for locking the stand.

[0013] In one of the embodiments, the telescopic driving member is a pneumatic cylinder, an electric cylinder or an oil cylinder, and the telescopic end of the telescopic driving member is inserted into the water pipe and fixedly connected with the first brush.

[0014] In one of the embodiments, the cleaning assembly further comprises a third mounting frame fixedly connected with the top of the cover and the water inlet pipe, and the telescopic driving member is mounted on the third mounting frame.

[0015] In one of the embodiments, the output shaft of the third driving motor is fixed with a third driving pulley, the top of the third brush is fixed with a third driven pulley, the top of the fourth brush is fixed with a fourth driven pulley, and the third driving pulley and the third driven pulley are crossed with a third transmission belt, and one side of the third transmission belt is embedded into the fourth driven pulley and in transmission fit with the fourth driven pulley.

[0016] In one of the embodiments, the sewage discharge pipe is provided with a valve capable of opening or closing the sewage discharge pipe.

[0017] The bag type centrifugal water treatment device of the utility model, through the first driving motor driving the first bag filter to rotate, the centrifugal force generated in the rotating process of the first bag filter is used to filter the sewage into the first filter chamber, the filtrate enters the second filter chamber, through the reverse rotation of the third brush and the fourth brush to drive the second bag filter to rotate, the centrifugal force in the rotating process of the second bag filter is used to further filter the filtrate into the second filter chamber, realizing the double filtration of the sewage, the centrifugal filtration mode improves the filtration efficiency, without setting multiple filtration links, compared with the filter with multiple filter screens, the volume is smaller, and the floor area is reduced; in the filtration process, the first brush and the second brush clean the inner and outer surfaces of the first bag filter at the same time, the third brush and the fourth brush clean the inner and outer surfaces of the second bag filter at the same time, realizing the automatic cleaning of the dirt in the bag type centrifugal water treatment device, without stopping to clean the dirt, and improving the working efficiency of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the bag type centrifugal water treatment device in one embodiment of the utility model from one visual angle;

[0019] Figure 2 It is a structure schematic view of the bag type centrifugal water treatment device in one embodiment of the utility model from another visual angle;

[0020] Figure 3 The top view of the cloth bag type centrifugal water treatment device in one embodiment of the present application is shown in the figure.

[0021] Figure 4 The cross-sectional structure schematic diagram of the cloth bag type centrifugal water treatment device in one embodiment of the present application is shown in the figure.

[0022] Figure 5 The Figure 4 The local enlarged structure schematic diagram of part A in the embodiment shown in the figure is shown in the figure.

[0023] Figure 6 The Figure 4 The local enlarged structure schematic diagram of part B in the embodiment shown in the figure is shown in the figure.

[0024] Figure 7 The matching relationship diagram of the third driving pulley, the third driven pulley, the fourth driven pulley and the third transmission belt in one embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0025] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than the ways described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] Please combine Figures 1-7The utility model discloses a small, high work efficiency and can automatically clean dirt's cloth bag type centrifugal water treatment device 10, this cloth bag type centrifugal water treatment device 10 includes the cover 100, filter assembly and cleaning component, the top of cover 100 is equipped with for accessing the sewage to be handled and with the water inlet pipe 110 of cover 100 inner chamber intercommunication, the bottom of cover 100 is equipped with with cover 100 inner chamber intercommunication and can open or close's blow-off pipe 120 and be located blow-off pipe 120 side's water outlet 130. Filter assembly includes the first cloth bag filter 200 and second cloth bag filter 300 of accommodating in cover 100 inner chamber and can rotate relative to cover 100, install in the top of cover 100 and be used for driving the first cloth bag filter 200 rotation's first drive motor 400, the top of first cloth bag filter 200 with water inlet pipe 110 intercommunication, the bottom of first cloth bag filter 200 with blow-off pipe 120 intercommunication, and the inner chamber of first cloth bag filter 200 forms first filter chamber 210, second cloth bag filter 300 is sleeved in the periphery of first cloth bag filter 200, and second cloth bag filter 300 with first cloth bag filter 200 between formation for receiving first cloth bag filter 200 filtrate's second filter chamber 310, and second cloth bag filter 300 with the inner side wall of cover 100 between formation with water outlet 130 intercommunication's drainage chamber 320. Cleaning component includes the first brush 500 of inserting in first filter chamber 210 and with the inner surface of first cloth bag filter 200 abut, through the top of cover 100 and insert second filter chamber 310 and with the outer surface of first cloth bag filter 200 abut's second brush 600, through the top of cover 100 and insert second filter chamber 310 and with the inner surface of second cloth bag filter 300 abut's third brush 700, through the top of cover 100 and insert drainage chamber 320 and with the outer surface of second cloth bag filter 300 abut's fourth brush 800, erect in the top of cover 100 and with first brush 500 drive connection to drive first brush 500 in first filter chamber 210 elevating telescopic drive piece 510, install in the top of cover 100 and be used for driving second brush 600 rotation's second drive motor 610, install in the top of cover 100 and be used for driving third brush 700 and fourth brush 800 simultaneous rotation's third drive motor 710, and the rotation direction of third brush 700 and fourth brush 800 is opposite.

[0027] The first cloth bag filter 200 is driven to rotate by the first driving motor 400, so as to provide centrifugal force to the sewage entering the first filtering chamber 210, so that the impurities in the sewage are separated from the water under the action of the centrifugal force, and the first-stage filtration of the sewage (i.e. the rough filtration of the sewage) is realized. The first brush 500 driven by the telescopic driving member 510 rubs against the inner wall of the first cloth bag filter 200, so as to scrape off the dirt on the inner wall of the first cloth bag filter 200; the second brush 600 driven by the second driving motor 610 rotates relative to the outer wall of the first cloth bag filter 200, and scrapes off the dirt on the outer wall of the first cloth bag filter 200, so that the dirt on the surface of the first cloth bag filter 200 is cleaned in real time while the first cloth bag filter 200 filters the sewage. The second cloth bag filter 300 is rotated by the third brush 700 and the fourth brush 800 rotating in opposite directions, so that the third brush 700 and the fourth brush 800 drive the second cloth bag filter 300 to rotate, so as to provide centrifugal force to the filtrate entering the second filtering chamber, so that the impurities in the filtrate are separated from the water under the action of the centrifugal force, and the second-stage filtration of the sewage (i.e. the fine filtration of the sewage) is realized, and meanwhile the third brush 700 and the fourth brush 800 scrape off the dirt on the inner surface and the outer surface of the second cloth bag filter 300 respectively, so that the dirt is automatically cleaned.

[0028] In the embodiment, the dirt discharge pipe 120 is arranged at the bottom of the first cloth bag filter 200, when the dirt scraped off by the first brush is relatively large, the dirt discharge pipe 120 can be opened, and the first brush 500 is further lowered by the telescopic driving member, so as to push the dirt in the first filtering chamber 210 out of the dirt discharge pipe 120. Further, the axis of the water inlet pipe 110 coincides with the axis of the dirt discharge pipe 120, so as to avoid the problem that the telescopic driving member 510 drives the first brush 500 to discharge dirt, which is caused by the fact that the water inlet pipe 110 and the dirt discharge pipe 120 are not on the same vertical line. Preferably, the dirt discharge pipe 120 is provided with a valve 121 which can open or close the dirt discharge pipe 120, the valve 121 is closed during the sewage treatment process, and is opened during the dirt discharge. In addition, in the embodiment, the water outlet 130 is arranged at the bottom of the machine cover 100, away from the side of the fourth brush 800 and communicates with the drainage chamber 320, and the bottom of the machine cover 100 is provided with a sewage outlet 140 which communicates with the second filtering chamber and is adjacent to the third brush, so that the filtrate treated by the second cloth bag filter 300 can flow out of the water outlet 130, and the dirt scraped off by the third brush can flow out of the sewage outlet 140 from the water body, so as to reduce the burden of the dirt scraped off by the third brush on the filtration of the second cloth bag filter 300.

[0029] The first cloth bag filter 200 comprises a first roller 220, a first cloth bag 230 sleeved on the first roller 220, the top of the first roller 220 is communicated with the water inlet pipe 110, the bottom of the first roller 220 is communicated with the sewage pipe 120, a plurality of first through holes 221 are arranged on the side wall of the first roller 220 and communicated with the first filter chamber 210 and the second filter chamber 310, and the top of the first roller 220 is drivingly connected with the first driving motor 400; at least the top of the first cloth bag 230 and the bottom of the first cloth bag 230 are fixedly connected with the inner surface of the first roller 220, and the first cloth bag 230 shields the first through holes 221. In the embodiment, the first roller 220 is made of stainless steel material, which can avoid introducing new pollutants into the water body due to rust of the first roller 220 while ensuring the supporting strength of the first roller 220 to the first cloth bag 230. By fixing at least the top and the bottom of the first cloth bag 230 to the inner surface of the first roller 220, the problem of shielding failure of the first cloth bag 230 to the first through holes 221 caused by loosening of the first cloth bag 230 can be avoided, and the failure of the first cloth bag filter 200 can be prevented. The top end and the bottom end of the first cloth bag 230 are fixed on the first roller 220 by a clamp. The first cloth bag 230 can be arranged on the inner surface of the first roller 220, or on the outer surface of the first roller 220, or on both the inner surface and the outer surface of the first roller 220. Preferably, in the embodiment, the first cloth bag 230 is arranged on both the inner surface and the outer surface of the first roller 220.

[0030] In an embodiment, the filter assembly further comprises a first mounting bracket 150 fixed on the top of the machine cover 100, the first driving motor 400 is fixed on the first mounting bracket 150, a first driving pulley 410 is fixedly installed on the output shaft of the first driving motor 400, a first driven pulley 420 is fixedly sleeved on the top of the first roller 220, and a first transmission belt 430 is spanned between the first driving pulley 410 and the first driven pulley 420. That is, the first driving motor 400 drives the first roller 220 to rotate through belt transmission, so as to provide centrifugal force for the sewage in the first filter chamber 210, and the stability of the rotation of the first cloth bag filter 200 is ensured.

[0031] The second cloth bag filter 300 comprises a second roller 330, a second cloth bag 340 sleeved on the second roller 330, the top of the second roller 330 is in rolling fit with the inner top wall of the machine cover 100 through first rolling balls 331, the bottom inner wall of the machine cover 100 is provided with an annular limiting groove 160, the bottom of the second roller 330 is inserted into the annular limiting groove 160 and is in rolling fit with the inner wall of the annular limiting groove 160 through second rolling balls 332, a plurality of second through holes 333 communicating the second filter chamber 310 and the drainage chamber 320 are provided on the side wall of the second roller 330; at least the top of the second cloth bag 340 and the bottom of the second cloth bag 340 are fixedly connected with the inner surface of the second roller 330, and the second cloth bag 340 shields the second through holes 333. In the embodiment, the second roller 330 is made of stainless steel material, which can avoid introducing new pollutants into the water body due to rust of the second roller 330 while ensuring the supporting strength of the second roller 330 to the second cloth bag 340. By fixing at least the top and the bottom of the second cloth bag 340 to the inner surface of the second roller 330, the problem of shielding failure of the second cloth bag 340 to the second through holes 333 caused by loosening of the second cloth bag 340 can be avoided, and the failure of the second cloth bag filter 300 can be prevented. The top end and the bottom end of the second cloth bag 340 are fixed on the second roller 330 through clamps respectively. The second cloth bag 340 can be arranged on the inner surface of the second roller 330, or on the outer surface of the second roller 330, or on both the inner surface and the outer surface of the second roller 330. Preferably, in the embodiment, the second cloth bag 340 is arranged on both the inner surface and the outer surface of the second roller 330. In addition, in the embodiment, the annular limiting groove 160 is provided on the inner bottom surface of the machine cover 100, which limits the rotating path of the second roller 330, prevents the second roller 330 from shaking during rotation, and improves the stability of the overall structure of the cloth bag type centrifugal water treatment device 10. The second roller 330 is in rolling fit with the inner top surface of the machine cover 100 through the first rolling balls 331 and in rolling fit with the inner wall of the annular limiting groove 160 through the second rolling balls 332, which reduces the resistance of the second roller 330 during rotation.

[0032] In an embodiment, the cleaning assembly further comprises a second mounting frame 170, the second driving motor 610 is fixed on the second mounting frame 170, a second driving pulley 620 is fixedly installed on an output shaft of the second driving motor 610, a top of the second roller 330 is fixedly sleeved with a second driven pulley 630, and the second driving pulley 620 and the second driven pulley 630 are cross-installed with a second transmission belt 640. That is, the second driving motor 610 drives the second roller 330 to rotate through the belt transmission, so as to provide centrifugal force for the filtrate in the second filter chamber 310, and the stability of the rotation of the second bag filter 300 is ensured. Further, the second mounting frame 170 comprises a base 171 fixed on the top of the machine cover 100 and a stand 172 installed on the base 171, the second roller 330 is fixed on the stand 172, the base 171 is provided with a sliding rail 173, the bottom of the stand 172 is provided with a sliding block 174 in sliding cooperation with the sliding rail 173, and the base 171 is provided with a locking member 175 for locking the stand 172. In the embodiment, through the sliding cooperation between the stand 172 and the base 171, the tightness of the second transmission belt 640 can be adjusted, so that the second transmission belt 640 is tensioned in the belt transmission process, and the transmission efficiency between the second driving motor 610 and the second roller 330 is ensured. The locking member 175 can be a bolt penetrating through the base 171 and locked on the stand 172. In this way, after the stand 172 is adjusted to a specified position to tension the second transmission belt 640, the stand 172 and the base 171 can be fixed by locking the locking member 175, so as to maintain the shape of the second transmission belt 640.

[0033] In an embodiment, the telescopic driving member 510 is a pneumatic cylinder or an electric cylinder or an oil cylinder, and the telescopic end of the telescopic driving member 510 is inserted into the water inlet pipe 110 and fixedly connected with the first brush 500. Preferably, the telescopic driving member 510 is a pneumatic cylinder, which comprises a cylinder body, a piston slidingly installed in the inner cavity of the cylinder body and sealingly matched with the inner wall of the cylinder body, a piston rod fixed on the piston and extending out of the inner cavity of the cylinder body, and the piston rod is the telescopic end of the telescopic driving member 510. According to the different height and direction of the pneumatic cylinder, the piston rod can be directly inserted into the water inlet pipe 110 and fixedly connected with the first brush 500, or a transmission rod parallel to the piston rod and fixedly connected with the piston rod through a connecting sleeve can be arranged, and the transmission rod is inserted into the water inlet pipe 110 and fixedly connected with the first brush 500 to realize the driving connection between the telescopic driving member 510 and the first brush 500. In the embodiment, the cleaning assembly further comprises a third mounting bracket 180, which is fixedly connected with the top of the machine cover 100 and the water inlet pipe 110 respectively, and the telescopic driving member 510 is installed on the third mounting bracket 180. In order to adapt to the installation height of the telescopic driving member 510, an extension pipe 190 is further fixed above the water inlet pipe 110, the extension pipe 190 is a T-shaped three-way pipe, the bottom end of the T-shaped three-way pipe is connected with the water inlet pipe 110, and the connection part of the two is provided with a sealing ring 191; the top end of the T-shaped three-way pipe is provided with a flange plate 192, and the flange plate 192 is fixedly connected with a limiting ring 193, the telescopic end of the telescopic driving member 510 penetrates through the limiting ring 193 and is sequentially inserted into the extension pipe 190 and the water inlet pipe 110, and the limiting ring 193 is used for limiting the horizontal position of the telescopic end of the telescopic driving member 510 to prevent the telescopic end of the telescopic driving member 510 from shaking; the side end of the T-shaped three-way pipe is provided with a water inlet 194 for connecting with external sewage to be treated.

[0034] Please combine Figures 1-7In an embodiment, the output shaft of the third driving motor 710 is fixed with a third driving pulley 720, the top of the third brush 700 is fixed with a third driven pulley 730, the top of the fourth brush 800 is fixed with a fourth driven pulley 740, the third driving pulley 720 and the third driven pulley 730 are crossed with a third transmission belt 750, one side of the third transmission belt 750 is embedded in the fourth driven pulley 740 and is in transmission cooperation with the fourth driven pulley 740. In the embodiment, the fourth driven pulley 740 is arranged between the third driving pulley 720 and the third driven pulley 730, and the line connecting the centers of the three forms a triangle, the distance from the side edge of the fourth driven pulley 740 adjacent to the third transmission belt 750 to the side of the third transmission belt 750 away from the fourth driven pulley 740 is less than the diameter of the third driving pulley 720 and less than the diameter of the third driven pulley 730. Thus, when the third transmission belt 750 abuts against the fourth driven pulley 740, the side of the third transmission belt 750 adjacent to the fourth driven pulley 740 bends away from the fourth driven pulley 740, so that the third transmission belt 750 is tensioned. Thus, the third driving motor 710 drives the third driven pulley 730 and the fourth driven pulley 740 to rotate reversely through the third transmission belt 750, and further drives the third brush 700 and the fourth brush 800 to rotate reversely, that is, one of the third brush 700 and the fourth brush 800 rotates clockwise and the other rotates counterclockwise, thereby driving the second roller 330 to rotate.

[0035] The bag type centrifugal water treatment device 10 is driven by the first driving motor 400 to rotate the first bag filter 200, and the centrifugal force generated during the rotation of the first bag filter 200 is used to filter the sewage entering the first filter chamber 210, and the filtrate enters the second filter chamber 310. The second bag filter 300 is driven to rotate by the reverse rotation of the third brush 700 and the fourth brush 800, and the centrifugal force generated during the rotation of the second bag filter 300 is used to further filter the filtrate entering the second filter chamber 310, thereby achieving double filtration of the sewage. The centrifugal filtration mode improves the filtration efficiency, and multiple filtration links are not required, so that the device has a smaller volume and a smaller footprint compared with a filter with multiple filter screens. During the filtration process, the first brush 500 and the second brush 600 simultaneously clean the inner and outer surfaces of the first bag filter 200, and the third brush 700 and the fourth brush 800 simultaneously clean the inner and outer surfaces of the second bag filter 300, thereby achieving automatic cleaning of the dirt in the bag type centrifugal water treatment device 10 without stopping the machine for cleaning, thereby improving the working efficiency of the device.

[0036] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as within the scope of the present disclosure.

[0037] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it shall not be understood as the limitation of the scope of the present application patent. It should be pointed out that, for the ordinary skilled in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.

Claims

1. A cloth bag type centrifugal water treatment device, characterized by comprising: The utility model provides a sewage treatment device, comprising: a machine cover, a top of the machine cover is provided with a water inlet pipe for accessing sewage to be treated and communicating with an inner cavity of the machine cover, a bottom of the machine cover is provided with a sewage outlet pipe communicating with the inner cavity of the machine cover and being openable or closable, and a water outlet is located beside the sewage outlet pipe; a filter assembly, the filter assembly comprises a first cloth bag filter and a second cloth bag filter accommodated in the inner cavity of the machine cover and rotatable relative to the machine cover, a first driving motor installed on the top of the machine cover and used for driving the first cloth bag filter to rotate, a top of the first cloth bag filter communicates with the water inlet pipe, a bottom of the first cloth bag filter communicates with the sewage outlet pipe, and an inner cavity of the first cloth bag filter forms a first filter chamber, and a part of the first cloth bag filter matched with the machine cover is provided with a sealing ring; the second cloth bag filter is sleeved on the periphery of the first cloth bag filter, a second filter chamber for receiving filtrate of the first cloth bag filter is formed between the second cloth bag filter and the first cloth bag filter, and a drainage chamber communicating with the water outlet is formed between the second cloth bag filter and an inner side wall of the machine cover; and a cleaning assembly, the cleaning assembly comprises a first brush inserted in the first filter chamber and abutting against an inner surface of the first cloth bag filter, a second brush penetrating through the top of the machine cover and inserted into the second filter chamber and abutting against an outer surface of the first cloth bag filter, a third brush penetrating through the top of the machine cover and inserted into the second filter chamber and abutting against an inner surface of the second cloth bag filter, a fourth brush penetrating through the top of the machine cover and inserted into the drainage chamber and abutting against an outer surface of the second cloth bag filter, an extension driving member erected above the machine cover and drivingly connected with the first brush to drive the first brush to ascend and descend in the first filter chamber, a second driving motor installed on the top of the machine cover and used for driving the second brush to rotate, and a third driving motor installed on the top of the machine cover and used for driving the third brush and the fourth brush to rotate simultaneously, and a rotation direction of the third brush is opposite to that of the fourth brush; the second cloth bag filter comprises a second roller and a second cloth bag sleeved on the second roller, a top of the second roller is rollingly matched with an inner wall of the top of the machine cover through first rolling balls, an inner wall of a bottom of the machine cover is provided with an annular limiting groove, a bottom of the second roller is inserted into the annular limiting groove and rollingly matched with the inner wall of the annular limiting groove through second rolling balls, and a side wall of the second roller is provided with a plurality of second through holes communicating the second filter chamber and the drainage chamber; at least a top of the second cloth bag and a bottom of the second cloth bag are fixedly connected with an inner surface of the second roller, and the second cloth bag covers the second through holes.

2. The cloth bag type centrifugal water treatment apparatus according to claim 1, wherein the first cloth bag filter comprises a first roller and a first cloth bag sleeved on the first roller, the top of the first roller communicates with the water inlet pipe, the bottom of the first roller communicates with the sewage outlet pipe, a side wall of the first roller is provided with a plurality of first through holes communicating the first filter chamber and the second filter chamber, and the top of the first roller is drivingly connected with the first driving motor; at least a top of the first cloth bag and a bottom of the first cloth bag are fixedly connected with an inner surface of the first roller, and the first cloth bag covers the first through holes.

3. The cloth bag type centrifugal water treatment apparatus according to claim 2, wherein The filtering assembly further comprises a first mounting frame fixed on the top of the machine cover, the first driving motor is fixed on the first mounting frame, a first driving pulley is fixed on the output shaft of the first driving motor, a first driven pulley is fixed on the top of the first roller, and a first transmission belt is arranged between the first driving pulley and the first driven pulley.

4. The cloth bag type centrifugal water treatment apparatus according to claim 1, wherein The cleaning assembly further comprises a second mounting frame, the second driving motor is fixed on the second mounting frame, a second driving pulley is fixed on the output shaft of the second driving motor, a second driven pulley is fixed on the top of the second roller, and a second transmission belt is arranged between the second driving pulley and the second driven pulley.

5. The cloth bag type centrifugal water treatment apparatus according to claim 1, wherein The second mounting frame comprises a base fixed on the top of the machine cover and a stand mounted on the base, the second roller is fixed on the stand, the base is provided with a sliding rail, the bottom of the stand is provided with a sliding block in sliding fit with the sliding rail, and the base is provided with a locking member for locking the stand.

6. The cloth bag type centrifugal water treatment apparatus according to claim 1, wherein The telescopic driving member is a pneumatic cylinder, an electric cylinder or an oil cylinder, and the telescopic end of the telescopic driving member is inserted into the water inlet pipe and fixedly connected with the first brush.

7. The cloth bag type centrifugal water treatment apparatus according to claim 6, wherein The cleaning assembly further comprises a third mounting frame, the third mounting frame is fixedly connected with the top of the machine cover and the water inlet pipe respectively, and the telescopic driving member is mounted on the third mounting frame.

8. The cloth bag type centrifugal water treatment apparatus according to claim 1, wherein The output shaft of the third driving motor is fixed with a third driving pulley, the top of the third brush is fixed with a third driven pulley, the top of the fourth brush is fixed with a fourth driven pulley, a third transmission belt is arranged between the third driving pulley and the third driven pulley, and one side of the third transmission belt is embedded in the fourth driven pulley and in transmission fit with the fourth driven pulley.

9. The cloth bag type centrifugal water treatment apparatus according to claim 1, wherein A valve is arranged at the blowdown pipe to open or close the blowdown pipe.

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