CN215049443U

CN215049443U - Circulating industrial sewage treatment equipment

Info

Publication number: CN215049443U
Application number: CN202121684784.6U
Authority: CN
Inventors: 徐志英
Original assignee: Beijing Yineng Environmental Protection Technology Co ltd
Current assignee: Beijing Yineng Environmental Protection Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-07
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to a sewage treatment technical field just discloses a circulating industrial sewage treatment device, comprising a base plate, the lower fixed surface of bottom plate is connected with the supporting seat, the left side of bottom plate upper surface is provided with just the lauter tub. This circulating industry sewage treatment device, impurity in to sewage is filtered through the filter hopper, the processing filtration to sewage has been realized, the rotatory pivot that drives of output through first driving motor rotates, make the pivot drive the carousel and rotate, the carousel drives the permanent magnetism roller and rotates, the permanent magnetism roller adsorbs the metallics in the sewage, realized the processing to metallics in the sewage, heat the inside sewage of distillation barrel through the heating pipe, the distillation process to sewage has been realized, the rotatory (mixing) shaft that drives of output through second driving motor rotates, make the (mixing) shaft drive stirring fan blade and rotate, stirring fan blade stirs sewage, the distillation speed to sewage has been accelerated, and the work efficiency is improved.

Description

Circulating industrial sewage treatment equipment

Technical Field

The utility model relates to a sewage treatment technical field specifically is a circulating industrial sewage treatment equipment.

Background

Industry refers to the industry or engineering of raw materials collection and product processing manufacturing, industry is the product of the development of the society by different parts, through several development stages of handicraft industry, machine industry, industry is the component part of the second industry, mainly divide into light industry and heavy industry two kinds, 2014, the total value of Chinese industrial production reaches 4 trillion dollars, become the first industrial production country in the world beyond the United states, can produce a large amount of industrial sewage in the industrial production process, need to use sewage treatment facility when handling these sewage, but sewage treatment facility simple structure under the prior art, mostly can only carry out preliminary treatment to sewage, can not carry out comprehensive treatment to sewage, the treatment effect is relatively poor, can not reach the treatment requirement to sewage.

For example, chinese patent application nos.: CN204952422U, which is described basically as follows: the utility model can circularly treat the sewage completely treated for the first time by arranging the circulating pipe, thereby realizing the circular treatment of the sewage and enhancing the treatment effect of the sewage; but this utility model only carries out filtration treatment to sewage through the filter screen, and the treatment effect is relatively poor, can not be fine handle sewage, and the practicality is lower.

Therefore, the inventor provides a circulating industrial sewage treatment device with the experience of design development and actual manufacturing abundant in the related industry for years, and researches and improves the existing structure and deficiency, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a circulating industrial sewage treatment device, which solves the problem in the prior art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a circulating industrial sewage treatment device comprises a bottom plate, wherein a supporting seat is fixedly connected to the lower surface of the bottom plate, a primary filter barrel is arranged on the left side of the upper surface of the bottom plate, a water inlet is communicated with the top of the outer surface of the primary filter barrel, a water collecting cover is arranged in the middle of the inner wall of the primary filter barrel, a clamping seat is fixedly connected to the top of the inner wall of the primary filter barrel, a filter hopper is sleeved at the top of the outer surface of the clamping seat, a barrel cover is arranged right above the primary filter barrel, the rear side of the outer surface of the barrel cover is hinged to the rear side of the outer surface of the primary filter barrel through a hinge, a pull ring is fixedly connected to the front side of the upper surface of the barrel cover, a treatment box is arranged in the middle of the upper surface of the bottom plate, a rotating shaft is rotatably connected to the middle of the inner wall of the top of the treatment box, a rotary plate is fixedly connected to the bottom end of the rotating shaft, a limiting plate is fixedly connected to the upper surface of the rotary plate, and a permanent magnet roller is connected to the middle of the lower surface of the rotary plate through a thread, the left side and the right side of the lower surface of the rotary table are fixedly connected with mounting plates, the top and the bottom of the outer side surface of each mounting plate are respectively inserted with a fixing column, the outer end of each fixing column is fixedly connected with an adjusting plate, the middle part of the outer side surface of each adjusting plate is fixedly connected with an adjusting handle, the inner end of each fixing column is fixedly connected with a connecting seat, the inner side surface of each connecting seat is fixedly connected with a top plate, the inner side surface of each top plate is provided with a ball, the outer surface of each fixing column is sleeved with a return spring, the middle part of the front surface of the treatment box is provided with a box door, the front surface of the box door is hinged with the front surface of the treatment box through a hinge, the right side of the front surface of the box door is fixedly connected with an opening and closing handle, the right side of the upper surface of the bottom plate is fixedly connected with a supporting leg, the top of the inner side surface of the supporting leg is fixedly connected with a distillation barrel, the middle part of the lower surface of the distillation barrel is communicated with a drain valve, the top of the outer surface of the distillation barrel is communicated with a medicament adding pipe, the middle of the inner wall of the bottom of the distillation barrel is provided with a drainage cover, the middle of the inner wall of the top of the distillation barrel is rotatably connected with a stirring shaft, the left side and the right side of the outer surface of the stirring shaft are fixedly connected with scraping plates, the left side and the right side of the outer surface of the stirring shaft are respectively provided with a stirring blade, a heating pipe is arranged in the distillation barrel, the left side of the upper surface of the bottom plate is provided with a first water pump, the input end of the first water pump is communicated with the bottom of the outer surface of the primary filter barrel through a first water suction pipe, the output end of the first water pump is communicated with the top of the left side surface of the treatment box through a first water guide pipe, the right side of the upper surface of the bottom plate is provided with a second water pump, the input end of the second water pump is communicated with the bottom of the right side surface of the treatment box through a second water suction pipe, and the output end of the second water pump is communicated with the top of the outer surface of the distillation barrel through a second water guide pipe, the middle part of handling the case upper surface is provided with first driving motor, first driving motor's output pass the upper surface of handling the case and with the top fixed connection of pivot, the middle part of distillation barrel upper surface is provided with second driving motor, the output of second driving motor pass the upper surface of distillation barrel and with the top fixed connection of (mixing) shaft.

Preferably, the outer side of the lower surface of the filter hopper is provided with a jack, and the inner diameter of the jack is matched with the outer diameter of the clamping seat.

Preferably, the middle part of the inner wall of the top of the treatment box is provided with a limit groove, and the width of the limit groove is matched with that of the limit plate.

Preferably, the outer surface of the adjusting handle is provided with a wrapping layer, and the outer surface of the wrapping layer is provided with anti-skid grains.

Preferably, the top and the bottom of the outer side surface of the mounting plate are both provided with a through groove, and the inner diameter of the through groove is matched with the outer diameter of the fixing column.

Preferably, the number of the stirring fan blades is eight, and every four groups of stirring fan blades are symmetrically arranged on the left side and the right side of the outer surface of the stirring shaft.

(III) advantageous effects

Compared with the prior art, the utility model provides a circulating industrial sewage treatment device possesses following beneficial effect:

1. this circulating industry sewage treatment device, impurity in to sewage is filtered through the filter hopper, the processing filtration to sewage has been realized, the rotatory pivot that drives of output through first driving motor rotates, make the pivot drive the carousel and rotate, the carousel drives the permanent magnetism roller and rotates, the permanent magnetism roller adsorbs the metallics in the sewage, realized the processing to metallics in the sewage, heat the inside sewage of distillation barrel through the heating pipe, the distillation process to sewage has been realized, the rotatory (mixing) shaft that drives of output through second driving motor rotates, make the (mixing) shaft drive stirring fan blade and rotate, stirring fan blade stirs sewage, the distillation speed to sewage has been accelerated, and the work efficiency is improved.

2. This circulating industry sewage treatment device, cooperation through cassette and filter hopper is used, realized quick dismantlement and the installation to filter the fill, made things convenient for the user to clear up and change filter the fill, guaranteed filter the fill to the filter effect of sewage, cooperation through regulating plate and regulation handle is used, realized the regulation to fixed column fixed state, make the user adjust the fixed state of fixed column according to the user demand, realized quick installation and the dismantlement to the permanent magnetism roller, user's use has been made things convenient for.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2, fig. 3 and fig. 4 are schematic vertical sectional views of the local structure of the present invention;

fig. 5 is an enlarged schematic view of the structure at a position a of the present invention.

In the figure: 1. a base plate; 2. a primary filter barrel; 3. a water collection cover; 4. a card holder; 5. a filter hopper; 6. a pull ring; 7. a treatment tank; 8. a rotating shaft; 9. a turntable; 10. a limiting plate; 11. a permanent magnet roller; 12. mounting a plate; 13. fixing a column; 14. an adjusting plate; 15. adjusting the grip; 16. a connecting seat; 17. a top plate; 18. a return spring; 19. a box door; 20. a distillation barrel; 21. a drain cover; 22. a stirring shaft; 23. a squeegee; 24. a stirring fan blade; 25. heating a tube; 26. a first water pump; 27. a second water pump; 28. a first drive motor; 29. a second drive motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a circulating industrial sewage treatment device comprises a bottom plate 1, a supporting seat is fixedly connected to the lower surface of the bottom plate 1, a primary filter barrel 2 is arranged on the left side of the upper surface of the bottom plate 1, a water inlet is communicated with the top of the outer surface of the primary filter barrel 2, a water collecting cover 3 is arranged in the middle of the inner wall of the primary filter barrel 2, a clamping seat 4 is fixedly connected to the top of the inner wall of the primary filter barrel 2, a filter hopper 5 is sleeved on the top of the outer surface of the clamping seat 4, impurities in sewage are filtered through the filter hopper 5, the sewage is treated and filtered, through the matching use of the clamping seat 4 and the filter hopper 5, the filter hopper 5 is rapidly disassembled and installed, a user can conveniently clean and replace the filter hopper 5, the filtering effect of the filter hopper 5 on the sewage is ensured, a barrel cover is arranged right above the primary filter barrel 2, the rear side of the outer surface of the barrel cover is hinged to the rear side of the outer surface of the primary filter barrel 2 through a hinge, the front side of the upper surface of the barrel cover is fixedly connected with a pull ring 6, the middle part of the upper surface of the bottom plate 1 is provided with a processing box 7, the middle part of the inner wall of the top of the processing box 7 is rotatably connected with a rotating shaft 8, the bottom end of the rotating shaft 8 is fixedly connected with a rotating disc 9, the upper surface of the rotating disc 9 is fixedly connected with a limiting plate 10, the middle part of the lower surface of the rotating disc 9 is in threaded connection with a permanent magnet roller 11, the left side and the right side of the lower surface of the rotating disc 9 are both fixedly connected with mounting plates 12, the top and the bottom of the outer side surface of the mounting plates 12 are both inserted with fixed columns 13, the outer ends of the fixed columns 13 are fixedly connected with an adjusting plate 14, the middle part of the outer side surface of the adjusting plate 14 is fixedly connected with an adjusting handle 15, the adjustment of the fixed state of the fixed columns 13 is realized through the matching use of the adjusting plate 14 and the adjusting handle 15, so that a user can adjust the fixed state of the fixed columns 13 according to the use requirements, and realize the quick installation and disassembly of the permanent magnet roller 11, the use of a user is facilitated, the inner end of the fixed column 13 is fixedly connected with a connecting seat 16, the inner side face of the connecting seat 16 is fixedly connected with a top plate 17, the inner side face of the top plate 17 is provided with a ball, the outer surface of the fixed column 13 is sleeved with a return spring 18, the front middle part of the treatment box 7 is provided with a box door 19, the front side of the box door 19 is hinged with the front side of the treatment box 7 through a hinge, the front right side of the box door 19 is fixedly connected with an opening and closing handle, the right side of the upper surface of the bottom plate 1 is fixedly connected with a supporting leg, the top of the inner side face of the supporting leg is fixedly connected with a distillation barrel 20, the heating pipe 25 is used for heating sewage in the distillation barrel 20, the distillation treatment of the sewage is realized, the middle part of the lower surface of the distillation barrel 20 is communicated with a drain valve, the top of the outer surface of the distillation barrel 20 is communicated with a medicament adding pipe, the middle part of the inner wall at the bottom of the distillation barrel 20 is provided with a drainage cover 21, the middle part of the inner wall at the top of the distillation barrel 20 is rotatably connected with a stirring shaft 22, the left side and the right side of the outer surface of the stirring shaft 22 are both fixedly connected with scraping plates 23, the left side and the right side of the outer surface of the stirring shaft 22 are both provided with stirring blades 24, the interior of the distillation barrel 20 is provided with a heating pipe 25, the left side of the upper surface of the bottom plate 1 is provided with a first water pump 26, the input end of the first water pump 26 is communicated with the bottom of the outer surface of the primary filter barrel 2 through a first water suction pipe, the output end of the first water pump 26 is communicated with the top of the left side surface of the treatment box 7 through a first water guide pipe, the right side of the upper surface of the bottom plate 1 is provided with a second water pump 27, the models of the first water pump 26 and the second water pump 27 are both 150QJ20-48/8, the input end of the second water pump 27 is communicated with the bottom of the right side surface of the treatment box 7 through a second water suction pipe, the output end of the second water pump 27 is communicated with the top of the outer surface of the distillation barrel 20 through a second water guide pipe, the middle part of the upper surface of the treatment box 7 is provided with a first driving motor 28, the output end of the first driving motor 28 rotates to drive the rotating shaft 8 to rotate, so that the rotating shaft 8 drives the rotating disc 9 to rotate, the rotating disc 9 drives the permanent magnet roller 11 to rotate, the permanent magnet roller 11 adsorbs metal substances in the sewage, the treatment of the metal substances in the sewage is realized, the output end of the first driving motor 28 penetrates through the upper surface of the treatment box 7 and is fixedly connected with the top end of the rotating shaft 8, the middle part of the upper surface of the distillation barrel 20 is provided with a second driving motor 29, the models of the first driving motor 28 and the second driving motor 29 are Y112M-2, rotatory drive (mixing) shaft 22 rotation of output through second driving motor 29 for (mixing) shaft 22 drives stirring fan blade 24 and rotates, and stirring fan blade 24 stirs sewage, has accelerated the distillation speed to sewage, has improved work efficiency, and second driving motor 29's output passes distillation barrel 20's upper surface and with (mixing) shaft 22's top fixed connection.

The utility model discloses for the convenience of the user to filter 5 and dismantle and install, consequently seted up the jack in the outside of filtering 5 lower surfaces of fighting, the internal diameter of jack and cassette 4's external diameter looks adaptation, filter 5 is through jack installation and cassette 4 on, made things convenient for the user to filter 5 and dismantled and install.

The utility model discloses a stability when guaranteeing carousel 9 to rotate has consequently seted up the spacing groove at the middle part of handling the inner wall at 7 tops of case, and the width of spacing groove and the width looks adaptation of limiting plate 10 when carousel 9 rotates, and limiting plate 10 removes in the inside of spacing groove, and limiting plate 10 carries on spacingly to carousel 9, has guaranteed the stability when carousel 9 rotates.

The utility model discloses install and dismantle permanent magnetic roller 11 for the convenience of the user, consequently be provided with the parcel layer at the surface of adjusting handle 15, the surface on parcel layer is provided with anti-skidding line, and the parcel layer has increased the frictional force between user's palm and the regulation handle 15, has reduced the probability that the phenomenon of taking off the hand appears, has made things convenient for the user to install and dismantle permanent magnetic roller 11.

The utility model discloses a realize the regulation to fixed column 13 stationary state, consequently all seted up logical groove in the top of mounting panel 12 lateral surface and bottom, the internal diameter that leads to the groove and fixed column 13's external diameter looks adaptation, when adjusting fixed column 13's stationary state, fixed column 13 removes in the inside that leads to the groove.

The utility model discloses a realize being eight groups to the quick distillation of sewage, consequently, the quantity that sets up stirring fan blade 24, and per four groups of stirring fan blade 24 symmetry sets up in the left and right sides of (mixing) shaft 22 surface, and multiunit stirring fan blade 24 stirs the inside sewage of retort 20 for to the distillation rate of sewage, realized the quick distillation to sewage.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

When the device is used, a user injects sewage into the primary filtering barrel 2 through the water inlet, the sewage flows through the filtering hopper 5, the filtering hopper 5 filters impurities in the sewage, the sewage is treated and filtered, the filtered sewage flows into the water storage chamber in the primary filtering barrel 2 through the water collecting cover 3, the first water pump 26 is started, the sewage in the primary filtering barrel 2 enters the treatment box 7 through the first water suction pipe and the second water guide pipe, the first driving motor 28 is started, the output end of the first driving motor 28 rotates to drive the rotating shaft 8 to rotate, the rotating shaft 8 drives the rotating disc 9 to rotate, the rotating disc 9 drives the permanent magnetic roller 11 to rotate, the permanent magnetic roller 11 adsorbs metal substances in the sewage, the treatment of the metal substances in the sewage is realized, after the treatment is finished, the second water pump 27 is started, the sewage in the treatment box 7 enters the distillation barrel 20 through the second water suction pipe and the second water guide pipe, the user pours the medicament into to the inside of distillation barrel 20 through the medicament addition pipe, pour into the back that finishes, energize heating pipe 25, heating pipe 25 heats the inside sewage of distillation barrel 20, after the heating, start second driving motor 29, the rotatory (mixing) shaft 22 that drives of output of second driving motor 29 rotates, (mixing) shaft 22 drives scraper blade 23 and stirring fan blade 24 and rotates, stirring fan blade 24 stirs sewage, the distillation rate to sewage has been accelerated, after finishing the distillation, open the drain valve, discharge sewage, the processing to sewage has been realized.

In conclusion, this circulating industrial sewage treatment equipment filters the impurity in the sewage through filter hopper 5, realized the processing filtration to sewage, output rotation through first driving motor 28 drives pivot 8 and rotates, make pivot 8 drive carousel 9 rotate, carousel 9 drives permanent magnetism roller 11 and rotates, permanent magnetism roller 11 adsorbs the metallics in the sewage, realized the processing to metallics in the sewage, heat the inside sewage of distillation bucket 20 through heating pipe 25, realized the distillation treatment to sewage, output rotation through second driving motor 29 drives (mixing) shaft 22 and rotates, make (mixing) shaft 22 drive stirring fan blade 24 and rotate, stirring fan blade 24 stirs sewage, accelerated the distillation speed to sewage, work efficiency is improved.

This circulating industry sewage treatment device, cooperation through cassette 4 and filtration 5 of fighting is used, realized quick dismantlement and the installation to filtration 5 of fighting, made things convenient for the user to fight 5 to filter and cleared up and change, guaranteed to filter the filter effect of fighting 5 to sewage, cooperation through regulating plate 14 and regulation handle 15 is used, realized the regulation to fixed column 13 fixed state, make the user can adjust the fixed state of fixed column 13 according to the user demand, realized quick installation and the dismantlement to permanent magnetism roller 11, user's use has been made things convenient for.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A circulating industrial sewage treatment equipment, includes bottom plate (1), its characterized in that: the lower surface of the bottom plate (1) is fixedly connected with a supporting seat, the left side of the upper surface of the bottom plate (1) is provided with a primary filter barrel (2), the top of the outer surface of the primary filter barrel (2) is communicated with a water inlet, the middle part of the inner wall of the primary filter barrel (2) is provided with a water collecting cover (3), the top of the inner wall of the primary filter barrel (2) is fixedly connected with a clamping seat (4), the top of the outer surface of the clamping seat (4) is sleeved with a filter hopper (5), a barrel cover is arranged right above the primary filter barrel (2), the rear side of the outer surface of the barrel cover is hinged with the rear side of the outer surface of the primary filter barrel (2) through a hinge, the front side of the upper surface of the barrel cover is fixedly connected with a pull ring (6), the middle part of the upper surface of the bottom plate (1) is provided with a treatment box (7), the middle part of the inner wall at the top of the treatment box (7) is rotatably connected with a rotating shaft (8), and the bottom end of the rotating disc (9) is fixedly connected with the rotating shaft (8), the upper surface of the rotary table (9) is fixedly connected with a limiting plate (10), the middle part of the lower surface of the rotary table (9) is in threaded connection with a permanent magnet roller (11), the left side and the right side of the lower surface of the rotary table (9) are fixedly connected with mounting plates (12), the top and the bottom of the outer side of each mounting plate (12) are respectively spliced with a fixing column (13), the outer end of each fixing column (13) is fixedly connected with an adjusting plate (14), the middle part of the outer side of each adjusting plate (14) is fixedly connected with an adjusting handle (15), the inner end of each fixing column (13) is fixedly connected with a connecting seat (16), the inner side of each connecting seat (16) is fixedly connected with a top plate (17), the inner side of each top plate (17) is provided with a ball, the outer surface of each fixing column (13) is sleeved with a return spring (18), and the front middle part of the treatment box (7) is provided with a box door (19), the front of the box door (19) is hinged with the front of the processing box (7) through a hinge, the right side of the front of the box door (19) is fixedly connected with an opening and closing handle, the right side of the upper surface of the bottom plate (1) is fixedly connected with a supporting leg, the top of the inner side surface of the supporting leg is fixedly connected with a distillation barrel (20), the middle of the lower surface of the distillation barrel (20) is communicated with a drain valve, the top of the outer surface of the distillation barrel (20) is communicated with a medicament adding pipe, the middle of the inner wall of the bottom of the distillation barrel (20) is provided with a drain cover (21), the middle of the inner wall of the top of the distillation barrel (20) is rotatably connected with a stirring shaft (22), the left side and the right side of the outer surface of the stirring shaft (22) are both fixedly connected with scraping plates (23), the left side and the right side of the outer surface of the stirring shaft (22) are both provided with stirring fan blades (24), the heating pipe (25) is arranged in the distillation barrel (20), the left side of the upper surface of the bottom plate (1) is provided with a first water pump (26), the input end of the first water pump (26) is communicated with the bottom of the outer surface of the primary filter barrel (2) through a first water suction pipe, the output end of the first water pump (26) is communicated with the top of the left side surface of the treatment box (7) through a first water guide pipe, the right side of the upper surface of the bottom plate (1) is provided with a second water pump (27), the input end of the second water pump (27) is communicated with the bottom of the right side surface of the treatment box (7) through a second water suction pipe, the output end of the second water pump (27) is communicated with the top of the outer surface of the distillation barrel (20) through a second water guide pipe, the middle part of the upper surface of the treatment box (7) is provided with a first driving motor (28), the output end of the first driving motor (28) penetrates through the upper surface of the treatment box (7) and is fixedly connected with the top end of the rotating shaft (8), and a second driving motor (29) is arranged in the middle of the upper surface of the distillation barrel (20), and the output end of the second driving motor (29) penetrates through the upper surface of the distillation barrel (20) and is fixedly connected with the top end of the stirring shaft (22).

2. The circulating industrial sewage treatment apparatus according to claim 1, wherein: the outer side of the lower surface of the filter hopper (5) is provided with a jack, and the inner diameter of the jack is matched with the outer diameter of the clamping seat (4).

3. The circulating industrial sewage treatment apparatus according to claim 1, wherein: the middle part of the inner wall at the top of the treatment box (7) is provided with a limit groove, and the width of the limit groove is matched with that of the limit plate (10).

4. The circulating industrial sewage treatment apparatus according to claim 1, wherein: the outer surface of the adjusting handle (15) is provided with a wrapping layer, and the outer surface of the wrapping layer is provided with anti-skid grains.

5. The circulating industrial sewage treatment apparatus according to claim 1, wherein: the top and the bottom of the outer side surface of the mounting plate (12) are provided with through grooves, and the inner diameters of the through grooves are matched with the outer diameters of the fixing columns (13).

6. The circulating industrial sewage treatment apparatus according to claim 1, wherein: the number of the stirring fan blades (24) is eight, and every four groups of stirring fan blades (24) are symmetrically arranged at the left side and the right side of the outer surface of the stirring shaft (22).