CN210065258U

CN210065258U - Hollow fiber membrane tank type water treatment equipment for strengthening cleaning

Info

Publication number: CN210065258U
Application number: CN201920103814.6U
Authority: CN
Inventors: 王云凯; 林嘉填; 李桂林; 王添火; 刘海斌
Original assignee: Wesbang Xiamen Environmental Technology Co Ltd
Current assignee: Wesbang Xiamen Environmental Technology Co Ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2020-02-14
Anticipated expiration: 2029-01-22

Abstract

The utility model discloses a hollow fiber membrane tank type water treatment device with enhanced cleaning, which comprises a tank body, a plurality of groups of membrane elements and a cleaning device, wherein the bottom of the tank body is provided with a water inlet, and the top is provided with a water outlet; an upper fixed disk and a lower fixed disk are fixedly arranged in the tank body, a plurality of jacks are respectively formed in the upper fixed disk and the lower fixed disk, and two ends of the membrane element are respectively connected with the jacks of the upper fixed disk and the lower fixed disk. The cleaning device comprises a connecting rod, a water spraying inner ring, a water spraying outer ring, a pushing mechanism and a water pump, wherein a water flowing channel is arranged inside the connecting rod and is connected with the water pump through a water spraying pipe, the top of the connecting rod is connected with the pushing mechanism, the bottom of the connecting rod penetrates into the tank body from top to bottom, and the water spraying inner ring and the water spraying outer ring are respectively and fixedly arranged on the lower portion of the connecting rod. Compared with a column type membrane component, the utility model has the advantages of small occupied area, high treatment efficiency and low manufacturing cost; through setting up belt cleaning device, can wash the membrane element for the membrane element more tolerates the pollution, and life is longer.

Description

Hollow fiber membrane tank type water treatment equipment for strengthening cleaning

Technical Field

The utility model relates to a membrane separation technical field, in particular to reinforce abluent hollow fiber membrane pot-type water treatment facilities.

Background

The membrane separation technology mainly comprises microfiltration, ultrafiltration, nanofiltration and reverse osmosis, wherein ultrafiltration is an important technology. With the development of industry, the water quality pollution condition is increasingly serious, the requirement on water pretreatment is higher and higher, and more enterprises select ultrafiltration for pretreatment. Ultrafiltration products have been widely used in the fields of food, medical treatment, industrial wastewater treatment, ultrapure water preparation, biotechnology industry and the like.

The hollow fiber membrane is a good solid-liquid separation device, but in the membrane filtration process, the membrane pore diameter is reduced or blocked due to the adsorption and deposition of particles, colloidal particles or solute macromolecules in water on the membrane surface or in the membrane pores caused by the physical and chemical interaction or mechanical action with the membrane, and for the membrane pollution, once the feed liquid contacts with the membrane, the membrane pollution is started. Membrane elements need to be cleaned to eliminate membrane fouling so that the membrane can continue to operate. The problem of membrane pollution is solved, so that a hollow fiber membrane tank type water treatment device for strengthening cleaning is designed, and can be used for purifying tap water, river water, lake water and the like and treating domestic sewage and industrial wastewater caused by pollution.

Disclosure of Invention

To the above problem, an object of the utility model is to provide a reinforce abluent hollow fiber membrane pot-type water treatment facilities, through setting up belt cleaning device, realize the washing of hollow fiber membrane for the membrane element more tolerates the pollution, and life is longer.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a strengthen abluent hollow fiber membrane tank formula water treatment facilities, includes a jar body and a plurality of sets of membrane element, and the water inlet has been seted up to jar body bottom, and the top has been seted up and has been produced the mouth of a river. An upper fixing disc and a lower fixing disc are fixedly arranged in the tank body, a plurality of insertion holes are formed in the upper fixing disc and the lower fixing disc respectively, and two ends of the membrane element are connected with the insertion holes of the upper fixing disc and the lower fixing disc in a sealing mode respectively. The cleaning device comprises a connecting rod, a water spraying inner ring, a water spraying outer ring, a pushing mechanism and a water pump, wherein a water flowing channel is arranged inside the connecting rod, and the water flowing channel is connected with the water pump through a water spraying pipe. The top and the pushing mechanism of connecting rod are connected, and the bottom penetrates from top to bottom in the jar body, the water spray inner ring sets firmly respectively with the water spray outer loop the lower part of connecting rod. The inner water spraying ring and the outer water spraying ring are respectively provided with an annular water spraying channel communicated with the water flowing channel pipeline, the plurality of groups of membrane elements are arranged in an annular mode, the inner water spraying ring is arranged inside the circumference formed by the plurality of groups of membrane elements, and the outer ring surface of the inner water spraying ring is provided with a plurality of inner ring water spraying holes along the circumferential direction. The water spraying outer ring is arranged outside the circumference formed by the plurality of groups of membrane elements, and a plurality of outer ring water spraying holes are formed in the inner ring surface of the water spraying outer ring along the circumferential direction.

Furthermore, the cleaning device also comprises a backwashing component, the backwashing component comprises a suction pump, a water production barrel and a plurality of connecting pipelines, the water production port is connected with the suction pump through a first pipeline, the suction pump is connected with the water production barrel pipeline, the first pipeline is provided with a first valve and a second valve, a backwashing pipe communicated with the water spray pipe is arranged between the first valve and the second valve of the first pipeline, and the backwashing pipe is provided with a backwashing valve.

Furthermore, a third valve is arranged on the water spraying pipe.

Further, in order to allow the spout to move with the movement of the pushing mechanism, a section of the spout near the connecting rod is a stretchable hose.

In one embodiment, the pushing mechanism comprises a cross rod, a vertical rod and a lifting mechanism, one end of the cross rod is connected with the top of the connecting rod, a first flat groove is formed in the joint of the cross rod and the connecting rod, the other end of the cross rod is hinged to the supporting rod or the wall, and the bottom of the supporting rod is fixed to the tank body or the ground. The top of the vertical rod is connected with the middle of the cross rod, a second flat groove is formed in the joint of the cross rod and the vertical rod, and the bottom of the vertical rod is connected with the lifting mechanism.

Preferably, the lifting mechanism is a connecting rod assembly, and the connecting rod assembly can be driven manually or automatically.

Preferably, the lifting mechanism is a cylinder, and an air inlet end of the cylinder is connected with an air compressor.

In another embodiment, the pushing mechanism comprises a hydraulic cylinder and a hydraulic telescopic rod, the lower part of the hydraulic telescopic rod is fixedly connected with the top of the connecting rod, and the upper part of the hydraulic telescopic rod is connected with the hydraulic cylinder.

In one embodiment, the inner water spraying ring is arranged 5-20cm above the outer water spraying ring, and the annular water spraying channel of the inner water spraying ring is communicated with the water flow channel of the connecting rod through a plurality of inner ring branch pipes. The annular water spraying channel of the water spraying outer ring is communicated with the water flow channel of the connecting rod through a plurality of outer ring branch pipes, and a plurality of water spraying holes are formed in the outer ring branch pipes.

In another embodiment, the water spray inner ring and the water spray outer ring are arranged on the same horizontal plane, and the water flow channel of the connecting rod is respectively communicated with the annular water spray channels of the water spray inner ring and the water spray outer ring through a plurality of water spray branch pipes.

Furthermore, the membrane element comprises an upper sealing ring, a lower sealing ring, a central supporting tube and a plurality of hollow fiber membrane filaments, the membrane element is fixed in the jack of the upper fixing disc and the jack of the lower fixing disc through the upper sealing ring and the lower sealing ring respectively, two ends of the central supporting tube and the hollow fiber membrane filaments are connected with the upper sealing ring and the lower sealing ring respectively, and the hollow fiber membrane filaments are external pressure type hollow fiber membrane filaments and the lower ends of the hollow fiber membrane filaments are sealed.

Further, the tank body is provided with an aeration device, the aeration device comprises an air inlet pipe arranged at the bottom of the tank body and an aeration disc arranged below the lower fixed disc, the aeration disc is provided with a plurality of aeration openings, the air inlet pipe and the central support pipe are respectively connected with the aeration openings, and the central support pipe is provided with a plurality of aeration holes along the length direction.

Preferably, the openings of the aeration holes on the central support pipe are arranged from top to bottom in a dense-to-sparse mode.

Preferably, the aperture of the aeration hole is 1-2 mm.

Furthermore, a plurality of round holes are formed in the aeration disc, and a plurality of vent holes are formed in the lower fixing disc. The gas comes out from the round hole and enters the tank body through the vent hole, and the membrane element can be aerated and cleaned.

Preferably, the hollow fiber membrane filaments are ultrafiltration hollow fiber membranes, microfiltration hollow fiber membranes or nanofiltration composite hollow fiber membranes.

Further, the jar body include jar body and cover, the cover pass through the fastener with jar body sealing connection, it establishes to produce the mouth of a river on the cover, upper fixed disk and lower fixed disk establish in the jar body.

Furthermore, the tank body is provided with a water outlet for discharging concentrated water on the wall surface between the upper fixed disk and the lower fixed disk.

Furthermore, the bottom of the tank body is provided with 3-5 brackets.

Furthermore, the tank body is provided with an access hole.

Preferably, the fastener is a bolt.

Furthermore, a pressure release valve is fixedly arranged on the tank cover.

Furthermore, the materials of the tank body and the tank cover are both sus304 stainless steel.

The utility model discloses following beneficial effect has: 1. the membrane element can be cleaned in three cleaning modes, including an aeration device cleaning mode, a water spraying cleaning mode and a back washing mode, and the membrane element can be cleaned in all three cleaning modes, so that the membrane element can be cleaned better, is more resistant to pollution and has longer service life; 2. compared with a column type membrane assembly, a plurality of membrane elements are arranged in the device, so that the filling density is high, the occupied area is small, and the treatment efficiency is high; the space in the tank is large, the treatment capacity is large, and the SS impact with higher concentration can be resisted; only one set of water inlet, water outlet and thick water outlet is arranged, and compared with a tubular column type membrane component, a large amount of pipe fitting materials are saved; the tank body is made of metal durable materials and can be repeatedly used, so that the cost is saved; 3. the membrane element can be freely taken out, is convenient to clean or replace, is convenient to maintain, and saves cost.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a schematic structural view of a membrane element.

FIG. 3 is a schematic view of the inner water spray ring disposed above the outer water spray ring.

FIG. 4 is a schematic structural view of the inner water-spraying ring and the outer water-spraying ring disposed at the same horizontal plane.

Fig. 5 is a schematic structural diagram of the second embodiment.

Fig. 6 is a schematic structural diagram of the third embodiment.

Description of the main component symbols: 1. a tank body; 11. a can body; 12. a can lid; 13. an upper fixed disc; 14. a lower fixed disc; 141. a vent hole; 10. a jack; 101. a water inlet; 102. a water producing port; 103. a water outlet; 104. an access hole; 105. a pressure relief valve; 21. an air inlet pipe; 22. an aeration disc; 221. an aeration opening; 222. a circular hole; 3. a membrane element; 31. an upper sealing ring; 32. a lower seal ring; 33. a central support tube; 331. an aeration hole; 34. hollow fiber membrane filaments; 41. a connecting rod; 40. a water flow channel; 401. a water spray pipe; 42. a water spraying inner ring; 421. an annular water spray channel; 4211. an inner ring branch pipe; 422. an inner ring water spray hole; 43. a water spraying outer ring; 431. an annular water spray channel; 4311. an outer ring branch pipe; 4312. a water spray hole; 432. outer ring water spray holes; 400. a water spray branch pipe; 44. a pushing mechanism; 441. a cross bar; 4411. a first flat groove; 4412. a second flat groove; 442. a vertical rod; 443. a support bar; 444. a connecting rod assembly; 445. a cylinder; 446. an air compressor; 447. a hydraulic cylinder; 448. a hydraulic telescopic rod; 45. a water pump; 46. a suction pump; 47. a water producing barrel; 5. a first conduit; 50. backwashing the tubes; 51. a first valve; 52. a second valve; 53. backwashing the valve; 54. a third valve; 6. a bolt; 7. and (4) a bracket.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example one

As shown in figures 1 and 2, the hollow fiber membrane tank type water treatment equipment for strengthening cleaning comprises a tank body 1, a plurality of groups of membrane elements 2 and a cleaning device. The tank body 1 comprises a tank body 11 and a tank cover 12, wherein the tank body 11 and the tank cover 12 are both made of sus304 stainless steel, the tank cover 12 is hermetically connected with the tank body 11 through a bolt 6, a water inlet 101 is formed in the bottom of the tank body 11, and a water outlet 102 is formed in the top of the tank cover 12. The tank body 1 is fixedly provided with an upper fixed disk 13 and a lower fixed disk 14, and the tank body 11 is provided with a water outlet 103 for discharging concentrated water on the wall surface between the upper fixed disk 13 and the lower fixed disk 14. The bottom of the tank body 11 is provided with supports 7, the number of the supports 7 is 3-5, the tank body 11 is provided with an access hole 104, and the tank cover 12 is fixedly provided with a pressure release valve 105.

The tank body 1 is provided with an aeration device, the aeration device comprises an air inlet pipe 21 arranged at the bottom of the tank body 11 and an aeration disc 22 arranged below the lower fixed disc 14, the aeration disc 22 is provided with a plurality of aeration ports 221, and the air inlet pipe 21 is connected with the aeration ports 221. The aeration disc 22 is provided with a plurality of round holes 222, and the lower fixed disc 14 is provided with a plurality of vent holes 141.

The upper fixing plate 13 and the lower fixing plate 14 are respectively provided with a plurality of insertion holes 10. The membrane element 3 is composed of an upper sealing ring 31, a lower sealing ring 32, a central supporting pipe 33 and a plurality of hollow fiber membrane wires 34, wherein the upper sealing ring 31 is detachably and hermetically installed in the insertion hole 10 of the upper fixing disc 13, and the lower sealing ring 32 is detachably and hermetically installed in the insertion hole 10 of the lower fixing disc 14. The lower part of the central supporting tube 33 is connected with the aeration port 221, the central supporting tube 33 is provided with a plurality of aeration holes 331 along the length direction, the aperture of the aeration holes 331 is 1-2mm, and the aeration holes 331 on the central supporting tube 33 are arranged from top to bottom in a dense-sparse manner. Two ends of the hollow fiber membrane wire 34 are respectively connected with the upper sealing ring 31 and the lower sealing ring 32, the hollow fiber membrane wire 34 is an external pressure type hollow fiber membrane wire, the lower end of the hollow fiber membrane wire is sealed, and the hollow fiber membrane wire 34 is an ultrafiltration hollow fiber membrane, a microfiltration hollow fiber membrane or a nanofiltration composite hollow fiber membrane.

The cleaning device comprises a connecting rod 41, a water spraying inner ring 42, a water spraying outer ring 43, a pushing mechanism 44, a water pump 45, a suction pump 46 and a water producing barrel 47. The inside of connecting rod 41 is equipped with flowing water passageway 40, and flowing water passageway 40 passes through spray pipe 401 with water pump 45 and links to each other, and the section that spray pipe 401 is close to connecting rod 41 is tensile hose. The top of connecting rod 41 is connected with pushing mechanism 44, and the material of connecting rod 41 is stainless steel or polyvinyl chloride pipe, and connecting rod 4 drives water spray inner ring 42 and water spray outer ring 43 and reciprocates under pushing mechanism 44's effect. The bottom of the connecting rod 41 penetrates into the tank body 1 from top to bottom, and the inner water spraying ring 42 and the outer water spraying ring 43 are respectively and fixedly arranged at the lower part of the connecting rod 41. The water producing port 102 is connected with the suction pump 46 through a first pipeline 5, the suction pump 46 is connected with a water producing barrel 47 through a pipeline, a first valve 51 and a second valve 52 are arranged on the first pipeline 5, a backwashing pipe 50 communicated with the water spraying pipe 401 is arranged between the first valve 51 and the second valve 52 on the first pipeline 5, a backwashing valve 53 is arranged on the backwashing pipe 50, and a third valve 54 is arranged on the water spraying pipe 401.

The plurality of sets of membrane elements 3 are arranged in a ring shape, the water spray inner ring 42 is provided inside the circumference formed by the plurality of sets of membrane elements 3, and the water spray outer ring 43 is provided outside the circumference formed by the plurality of sets of membrane elements 3. Annular water spray channel 421 has been seted up to the inside of water spray inner ring 42, and a plurality of inner ring hole for water spraying 422 has been seted up along circumference to the outer anchor ring of water spray inner ring 42, and annular water spray channel 431 has been seted up to the inside of water spray outer ring 43, and a plurality of outer loop hole for water spraying 432 has been seted up along circumference to the inner anchor ring of water spray outer ring 43.

As shown in FIG. 3, in one arrangement, the water spray inner ring 42 is disposed 5 to 20cm above the water spray outer ring 43, and the annular water spray passage 421 of the water spray inner ring 42 is communicated with the water flow passage 40 of the connecting rod 41 through a plurality of inner ring branch pipes 4211. The annular water spraying channel 431 of the water spraying outer ring 43 is communicated with the water flow channel 40 of the connecting rod 41 through a plurality of outer ring branch pipes 4311, and a plurality of water spraying holes 4312 are arranged on the outer ring branch pipes 4311.

As shown in FIG. 4, in another arrangement, the inner water spray ring 42 and the outer water spray ring 43 are disposed on the same horizontal plane, and the water flow passage 40 of the connecting rod 41 is communicated with the annular water spray passage 421 and the annular water spray passage 431 through a plurality of water spray branch pipes 400, respectively.

The pushing mechanism 44 includes a cross bar 441, a vertical bar 442 and a lifting mechanism, one end of the cross bar 441 is connected to the top of the connecting rod 41, the cross bar 441 has a first flat slot 4411 at the connection with the connecting rod 441, the other end of the cross bar 441 is hinged to the supporting rod 443 or the wall, and the bottom of the supporting rod 443 is fixed to the tank body 1 or the ground. The top of the vertical rod 442 is connected to the middle of the cross rod 441, the cross rod 441 is provided with a second flat groove 4412 at the connection part with the vertical rod 442, and the bottom of the vertical rod 442 is connected to the lifting mechanism. The lifting mechanism is a linkage assembly 444 that may be driven manually or automatically.

Example two

As shown in fig. 5, the present embodiment is different from the first embodiment only in that: the pushing mechanism 44 comprises a cross rod 441, a vertical rod 442 and a lifting mechanism, the lifting mechanism is an air cylinder 445, and an air inlet end of the air cylinder 445 is connected with an air compressor 446. The rest of the structure of the present embodiment is the same as that of the first embodiment.

EXAMPLE III

As shown in fig. 6, the present embodiment is different from the first embodiment only in that: the pushing mechanism 44 comprises a hydraulic cylinder 447 and a hydraulic telescopic rod 448, the lower part of the hydraulic telescopic rod 448 is fixedly connected with the top of the connecting rod 41, and the upper part is connected with the hydraulic cylinder 447. The rest of the structure of the present embodiment is the same as that of the first embodiment.

The utility model discloses a theory of operation does: when the equipment is in operation, raw water (sewage or tap water, river water, lake water, etc.) to be treated enters from the water inlet 101 at the bottom of the tank body 11, is treated by the vacuum fiber membrane, and then produced water is produced from the hollow fiber membrane wires 34, and after being collected, the produced water flows out from the water production port 102 under the action of the suction pump 46 and enters the water production barrel 47. At this time, the first valve 51 and the second valve 52 are opened, and the backwash valve 53 and the third valve 54 are closed.

After a period of treatment, the outer surface of the hollow fiber membrane yarn 34 is polluted, sludge, microorganisms and the like are attached, and the hollow fiber membrane yarn needs to be cleaned in three ways:

1. aeration cleaning: the aerated gas enters from the air inlet pipe 21, is aerated by the aeration device and then is discharged from the water outlet 103, the aeration is carried out at intervals, the hollow fiber membrane element 3 is cleaned by air sweeping, the gas comes out from the round hole 222 on the aeration disc 22 and enters the tank body 1 through the vent hole 141, and the membrane element 3 can be cleaned by aeration. During aeration, the hollow fiber membrane wires 34 can be shaken in the running process, and sludge attached to the membrane wires and sludge shaken off and settled above the membrane components can be swept and removed. The removed sludge settles to the bottom of the tank body 1 after the aeration is stopped, and is discharged from the water inlet 101.

2. When the water production is stopped, the first valve 51, the second valve 52 and the backwashing valve 53 are closed, the third valve 54 is opened, the water pump 45 pumps part of the produced water out of the water production barrel 47, the produced water enters the connecting rod 41 through the water spraying pipe 401 and then enters the water spraying inner ring 42 and the water spraying outer ring 43, the water spraying ring 42 (43) moves up and down under the action of the pushing mechanism 44, the water spraying inner ring 42 sprays water outwards, the water spraying outer ring 43 sprays water inwards, and the membrane element 3 is cleaned.

3. The second valve 52 is closed, the first valve 51, the third valve 54 and the backwashing valve 53 are simultaneously opened, and the water pump 45 pumps water to perform backwashing on the hollow fiber membrane element 3.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an reinforce abluent hollow fiber membrane tank-type water treatment facilities, includes a jar body and a plurality of membrane element of group, and the water inlet has been seted up to jar body bottom, and the mouth of a river has been seted up at the top, and jar internal top fixed disk and lower fixed disk have set firmly, have seted up a plurality of jacks on top fixed disk and the lower fixed disk respectively, the both ends of membrane element respectively with the jack sealing connection of top fixed disk and lower fixed disk, its characterized in that: the cleaning device comprises a connecting rod, a water spraying inner ring, a water spraying outer ring, a pushing mechanism and a water pump, a water flowing channel is arranged in the connecting rod, the water flowing channel is connected with the water pump through a water spraying pipe, the top of the connecting rod is connected with the pushing mechanism, the bottom of the connecting rod penetrates into the tank body from top to bottom, the water spraying inner ring and the water spraying outer ring are respectively and fixedly arranged at the lower part of the connecting rod, the inner parts of the water spraying inner ring and the water spraying outer ring are respectively provided with an annular water spraying channel communicated with the water flowing channel pipeline, the membrane element of a plurality of groups be the annular and arrange, the water spray inner ring sets up inside the circumference that a plurality of group's membrane element formed, and a plurality of inner ring hole for water spraying has been seted up along circumference to the outer anchor ring of water spray inner ring, and the water spray outer ring sets up outside the circumference that a plurality of group's membrane element formed, and a plurality of outer ring hole for water spraying has been seted up along circumference to the inner anchor ring of water spray outer ring.

2. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: the cleaning device further comprises a backwashing component, the backwashing component comprises a suction pump, a water production barrel and a plurality of connecting pipelines, a water production port is connected with the suction pump through a first pipeline, the suction pump is connected with the water production barrel pipeline, the first pipeline is provided with a first valve and a second valve, the first pipeline is arranged between the first valve and the second valve and is provided with a backwashing pipe communicated with the water spray pipe, the backwashing pipe is provided with a backwashing valve, the water spray pipe is provided with a third valve, and one section of the water spray pipe close to the connecting rod is a stretchable hose.

3. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: pushing mechanism include horizontal pole, montant and elevating system, the one end of horizontal pole links to each other with the top of connecting rod, the horizontal pole has seted up first flat groove in the junction with the connecting rod, the other end of horizontal pole articulates on bracing piece or wall, the top of montant with the middle part of horizontal pole links to each other, the horizontal pole has seted up second flat groove in the junction with the montant, the bottom and the elevating system of montant are connected.

4. A hollow fiber membrane tank type water treatment apparatus for intensive cleaning as set forth in claim 3, wherein: the lifting mechanism is a connecting rod assembly or an air cylinder, and the air inlet end of the air cylinder is connected with an air compressor.

5. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: the pushing mechanism comprises a hydraulic cylinder and a hydraulic telescopic rod, the lower part of the hydraulic telescopic rod is fixedly connected with the top of the connecting rod, and the upper part of the hydraulic telescopic rod is connected with the hydraulic cylinder.

6. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: the water spraying inner ring is arranged 5-20cm above the water spraying outer ring, an annular water spraying channel of the water spraying inner ring is communicated with a water flow channel of the connecting rod through a plurality of inner ring branch pipes, an annular water spraying channel of the water spraying outer ring is communicated with the water flow channel of the connecting rod through a plurality of outer ring branch pipes, and a plurality of water spraying holes are formed in the outer ring branch pipes.

7. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: the water spraying inner ring and the water spraying outer ring are arranged on the same horizontal plane, and the water flow channel of the connecting rod is respectively communicated with the annular water spraying channels of the water spraying inner ring and the water spraying outer ring through a plurality of water spraying branch pipes.

8. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: the membrane element comprises an upper sealing ring, a lower sealing ring, a central supporting tube and a plurality of hollow fiber membrane filaments, the membrane element is fixed in the jack of an upper fixing disc and a lower fixing disc through the upper sealing ring and the lower sealing ring respectively, two ends of the central supporting tube and the hollow fiber membrane filaments are connected with the upper sealing ring and the lower sealing ring respectively, the hollow fiber membrane filaments are external pressure type hollow fiber membrane filaments, the lower end of the hollow fiber membrane filaments is sealed, the tank body is provided with an aeration device, the aeration device comprises an air inlet pipe arranged at the bottom of the tank body and an aeration disc arranged below the lower fixing disc, the aeration disc is provided with a plurality of aeration ports, the air inlet pipe and the central supporting tube are respectively connected with the aeration ports, the central supporting tube is provided with a plurality of aeration holes along the length direction, the opening of the aeration holes on the central supporting tube is arranged from bottom, the aperture of the aeration hole is 1-2mm, the aeration disc is provided with a plurality of round holes, and the lower fixed disc is provided with a plurality of air holes.

9. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 8, wherein: the hollow fiber membrane filaments are ultrafiltration hollow fiber membranes, microfiltration hollow fiber membranes or nanofiltration composite hollow fiber membranes.

10. An intensive cleaning hollow fiber membrane tank type water treatment apparatus as claimed in claim 1, wherein: the jar body include jar body and cover, the cover pass through the fastener with jar body sealing connection, it establishes to produce the mouth of a river the cover is last, last fixed disk and lower fixed disk establish this internally of jar, the jar body is offered the outlet that is used for discharging dense water on the wall between last fixed disk and lower fixed disk, the bottom of jar body is equipped with the support, the quantity of support is 3-5, the jar body on seted up the access hole, the fastener is the bolt, the cover on set firmly a relief valve, the material of jar body and cover be sus304 stainless steel.