CN220703285U - Landfill leachate equalizing basin - Google Patents

Abstract

The application discloses landfill leachate equalizing basin belongs to landfill leachate treatment device field, including the treatment basin, treatment basin one side top is equipped with the inlet tube, the treatment basin top articulates there is the roof, just roof top fixed mounting has the liquid reserve tank, the filling tube is installed to the liquid reserve tank top, treatment basin is kept away from inlet tube one side fixed mounting and is had the mounting panel, just the mounting panel top is equipped with the filter frame, the filter frame top articulates there is the apron; a spraying assembly is arranged between the liquid storage tank and the top plate, and a mixing assembly is arranged in the liquid storage tank; a rotating rod is rotatably arranged in the treatment pool. This application plays the effect of stirring mixed permeate and additive through stirring assembly's setting, and through driving assembly's setting, can play the drive stirring assembly and be located in the treatment tank and remove, and the stirring assembly of being convenient for stirs the permeate in the treatment tank comprehensively, is favorable to improving the mixing efficiency of permeate and additive.

Description

Landfill leachate equalizing basin

Technical Field

The application relates to the field of landfill leachate treatment devices, and more particularly relates to a landfill leachate regulating tank.

Background

The landfill leachate is high-concentration organic wastewater which is formed by deducting saturated water holding capacity of garbage and an overburden layer from water contained in the garbage in a landfill, rain and snow water and other water entering the landfill and passing through the garbage layer and the overburden layer, and accumulated water which is leaked out of the garbage to be used for incineration, wherein in the garbage leachate treatment step, additives are needed to be added into a treatment tank to be mixed with the leachate, and the garbage leachate regulating tank is used for homogenizing the water quality and the water quantity of the wastewater mainly through stirring.

However, some stirring structures are arranged in the middle part or on one side of the device, only part of the penetrating fluid in the treatment tank can be stirred, the stirring of the penetrating fluid at the edge of the treatment tank is insufficient, the mixing effect of the wastewater and the additive is further reduced, and the homogenization efficiency of the penetrating fluid is reduced. Therefore, in order to solve the problems, we propose a landfill leachate regulating tank.

Disclosure of Invention

In order to solve the problems, the application provides a landfill leachate equalizing basin, adopts following technical scheme:

the garbage leachate regulating tank comprises a treatment tank, wherein a water inlet pipe is arranged at the top of one side of the treatment tank, a top plate is hinged to the top end of the treatment tank, a liquid storage tank is fixedly arranged at the top end of the top plate, a feeding pipe is arranged at the top end of the liquid storage tank, a mounting plate is fixedly arranged at one side, far away from the water inlet pipe, of the treatment tank, a filtering frame is arranged at the top end of the mounting plate, and a cover plate is hinged to the top of the filtering frame; a spraying assembly is arranged between the liquid storage tank and the top plate, and a mixing assembly is arranged in the liquid storage tank; the rotary rod is rotatably installed in the treatment pool and comprises two assembling rods rotatably installed on the inner wall of the treatment pool, a reciprocating screw rod is fixedly connected between the two assembling rods, a moving block is sleeved on the side wall of the reciprocating screw rod, one end, far away from the mounting plate, of the rotary rod is connected with a driving assembly, and the bottom end of the moving block is provided with a stirring assembly; the filter is characterized in that a connecting pipe is communicated between the filter frame and the treatment tank, a filter assembly is arranged in the filter frame, and an air outlet pipe is arranged at one end, far away from the treatment tank, of the filter frame.

Through adopting above-mentioned technical scheme, when this equipment was used, the staff is with the additive pour into the liquid reserve tank through the filling tube into, stir the additive through mixing assembly, help avoiding the additive to produce the sediment, be favorable to keeping the quality of additive, afterwards, the staff is with the infiltration liquid pour into the treatment pond into through the inlet tube in, evenly spray the additive to the infiltration liquid surface through spraying the subassembly with the liquid reserve tank, afterwards, stir the infiltration liquid through stirring assembly, make infiltration liquid and the even mixture of additive, and rotate through driving assembly drive dwang, make the movable block carry the stirring subassembly to be located reciprocating motion on the reciprocating screw rod, be convenient for stir the infiltration liquid of different positions in the treatment pond, be favorable to improving the efficiency that infiltration liquid and additive mix, the infiltration liquid can produce poisonous gas, the gas gets into in the filter frame through the connecting pipe, the filter frame is equipped with filter assembly, play the effect of filtering purge gas, be favorable to reducing the waste gas that the infiltration liquid produced to the environment pollution, be favorable to improving the environmental protection of equipment, fix through bolt and nut spiro union between apron and the filter frame, and bottom are equipped with the rubber pad, be favorable to improving the stability and filter frame and seal.

Further, spray the subassembly including fixed mounting in the suction pump of liquid reserve tank bottom inner wall, roof bottom fixed mounting has sealed pad, just roof bottom fixed mounting has the coil pipe, coil pipe lateral wall fixed mounting has the shower nozzle that is sharp distribution, be connected with the pipe between coil pipe and the suction pump.

Through adopting above-mentioned technical scheme, take out the additive in the liquid reserve tank to the coil pipe through the suction pump in, then, the additive passes through the even spraying of shower nozzle to the permeate surface, be convenient for permeate and additive evenly mix.

Further, the mixing assembly comprises a first motor fixedly mounted on one side of the liquid storage tank, a supporting rod is fixedly mounted on an output shaft of the first motor, one end of the supporting rod, far away from the first motor, extends into the liquid storage tank, a plurality of groups of mixing rods which are distributed in a linear array are fixedly mounted on the side wall of one end of the supporting rod, and the same groups of mixing rods are distributed in an annular array at least three and located on the side wall of the supporting rod.

Through adopting above-mentioned technical scheme, through first motor drive branch rotation, branch drive mixing rod is located the liquid reserve tank internal rotation, stirs the additive through mixing rod, helps avoiding the additive to be located the liquid reserve tank and produces the sediment, is favorable to keeping the quality of additive.

Further, the drive assembly includes fixed mounting in the mounting box that mounting panel one side was kept away from in the processing pond, fixed mounting has the third motor in the mounting box, just the one end fixed connection that third motor output shaft and dwang are relative, fixed mounting has the firm pole in the processing pond, firm pole lateral wall is located to movable block sliding sleeve, the equal fixed mounting in movable block both sides has the mounting bar, and two the equal fixed mounting in mounting bar bottom has the first stirring board that is sharp distribution, two the equal fixed cover of the one end lateral wall that the pole is relative is equipped with the baffle ring.

Through adopting above-mentioned technical scheme, through the rotation of third motor drive dwang, make the movable block be located reciprocating motion is made to reciprocating screw rod lateral wall, and the movable block is carried installation pole and first stirring board synchronous motion, can play the effect of stirring the infiltration liquid.

Further, the stirring assembly comprises a waterproof box fixedly mounted at the bottom end of the movable block, a second motor is fixedly mounted in the waterproof box, a supporting rod is rotatably mounted at the bottom end of the waterproof box, the top end of the supporting rod penetrates through the waterproof box and is fixedly connected with an output shaft of the second motor, a plurality of groups of second stirring plates which are linearly distributed are fixedly mounted on the side wall of the supporting rod, the same groups of second stirring plates are at least five and are located on the supporting rod to be distributed in an annular array, and stirring spiral blades are fixedly sleeved on the side wall of the lower section of the supporting rod.

Through adopting above-mentioned technical scheme, through second motor drive bracing piece rotation, bracing piece drive second stirring board and stirring spiral leaf synchronous rotation, through second stirring board and stirring spiral She Jiaodong permeate and additive, make permeate and additive evenly mixing, and stirring spiral leaf not only plays the effect of stirring permeate, and can make the permeate of handling the pond bottom upwards gush out, be convenient for permeate and additive evenly mixing, be favorable to improving the mixing efficiency of permeate and additive.

Further, the filter component comprises two drying plates which are slidably mounted in the filter frame, a plurality of purification plates which are distributed in a linear array are slidably mounted in the filter frame, clamping blocks are fixedly mounted on two sides of each of the drying plates and the purification plates, and clamping grooves which are formed in the inner wall of the filter frame and matched with the clamping blocks are formed in the same side of the inner wall of the filter frame.

Through adopting above-mentioned technical scheme, waste gas passes through the connecting pipe and gets into in the filter frame, through the setting of dry board and purification board in the filter frame, play dry and the effect of purifying gas, be favorable to reducing the pollution of gas to the air, the purification board is for the filter that corresponds with harmful substance in the waste gas, for example hydrogen sulfide adsorption plate etc., and dry board and purification board pass through the draw-in groove block that fixture block and filter frame inner wall were seted up and fix, through the cooperation of fixture block and draw-in groove, the subsequent dry board and the purification board of changing of staff of being convenient for is favorable to the filter effect of holding equipment.

Furthermore, a mounting ring is fixedly arranged in the connecting pipe, and a guide fan is arranged in the mounting ring.

Through adopting above-mentioned technical scheme, produce wind-force through the water conservancy diversion fan, play the effect with waste gas introduction filter frame.

In summary, the present application includes the following beneficial technical effects:

(1) In this application, through stirring assembly's setting, play the effect of stirring mixed permeate and additive, and through driving assembly's setting, can play the drive stirring assembly and be located the treatment tank and remove, be convenient for stir the stirring assembly and stir the permeate in the treatment tank comprehensively, be favorable to improving the mixing efficiency of permeate and additive.

(2) In this application, through mixing assembly's setting, play the effect of mixing regulator, help avoiding the additive to be located the liquid reserve tank and produce the sediment, be favorable to keeping the quality of additive, and through spraying assembly's setting, make the even spraying of additive to the infiltration liquid surface, be convenient for infiltration liquid and additive evenly mix, be favorable to improving the mixing efficiency of infiltration liquid and additive.

(3) In this application, through filter component's setting, play the effect of odor and poisonous gas in the waste gas that the filtration permeate produced, reach the effect of purifying waste gas, be favorable to reducing the pollution of waste gas to the environment, improved the feature of environmental protection of equipment.

Drawings

FIG. 1 is a schematic diagram of a landfill leachate regulating reservoir;

FIG. 2 is a cross-sectional view of the present application;

FIG. 3 is an enlarged view of FIG. 2A of the present application;

fig. 4 is an exploded view of the drive assembly and stirring assembly of the present application.

The reference numerals in the figures illustrate:

1. a treatment pool; 2. a top plate; 3. a mounting box; 4. a first motor; 5. a support rod; 6. a liquid storage tank; 7. a conduit; 8. a connecting pipe; 81. a mounting ring; 811. a diversion fan; 9. a cover plate; 10. a filter frame; 101. a purification plate; 102. a drying plate; 11. a clamping block; 12. a mounting plate; 13. a coiled pipe; 14. a mounting rod; 15. a moving block; 16. a first stirring plate; 17. a waterproof box; 18. a second motor; 19. a support rod; 20. a second stirring plate; 21. stirring the spiral leaves; 22. a rotating lever; 221. a reciprocating screw rod; 222. assembling a rod; 23. a third motor; 24. a mixing rod; 25. and a water pump.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is apparent that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the scope of protection of the present application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The present application is described in further detail below in conjunction with figures 1-4.

Referring to fig. 1-4, a landfill leachate equalizing basin, including treatment basin 1, treatment basin 1 one side top is equipped with the inlet tube, treatment basin 1 top articulates there is roof 2, and roof 2 top fixed mounting has liquid reserve tank 6, the filling tube is installed on liquid reserve tank 6 top, treatment basin 1 keeps away from inlet tube one side fixed mounting and has mounting panel 12, and the mounting panel 12 top is equipped with filter frame 10, filter frame 10 top articulates there is apron 9, be equipped with mixing assembly in liquid reserve tank 6, mixing assembly includes fixed mounting in the first motor 4 of liquid reserve tank 6 one side, first motor 4 output shaft fixed mounting has branch 5, and branch 5 keeps away from first motor 4 one end and extends to liquid reserve tank 6 in, branch 5 runs through liquid reserve tank 6 one end lateral wall fixed mounting and is the hybrid rod 24 that the straight line array distributes, be three and be located branch 5 lateral wall and be annular array distribution with the hybrid rod 24, during the use of this equipment, the staff will permeate liquid pours into treatment basin 1 through the inlet tube, treatment basin 1 top is through the setting up of roof 2, play the effect of sealed treatment basin 1, be favorable to reduce the diffusion of liquid reserve tank 1, later, through pouring into the additive into through filling tube 6 and drive motor 4, be located in the additive 5 through the first drive rod 24, it is located in the liquid reserve tank 6 to rotate additive 5, it is favorable to rotate additive mass to rotate to mix to produce additive, additive 5, be located in the drive rod 5, and mix additive is located in the interior 5 through drive rod 5, and is located in the drive rod is located in the tank 5, and is located in the additive 5.

Be equipped with between liquid reserve tank 6 and roof 2 and spray the subassembly, spray the subassembly including fixed mounting in the suction pump 25 of liquid reserve tank 6 bottom inner wall, roof 2 bottom fixed mounting has sealed the pad, and roof 2 bottom fixed mounting has coil pipe 13, coil pipe 13 lateral wall fixed mounting has the shower nozzle that is sharp distribution, be connected with pipe 7 between coil pipe 13 and the suction pump 25, take out the additive in the liquid reserve tank 6 to in the coil pipe 13 through pipe 7 through suction pump 25, then, the additive sprays to the infiltration liquid surface through the shower nozzle is even, be convenient for infiltration liquid and additive evenly mixed.

The rotating rod 22 is rotatably arranged in the treatment tank 1, the rotating rod 22 comprises two assembling rods 222 rotatably arranged on the inner wall of the treatment tank 1, a reciprocating screw rod 221 is fixedly connected between the two assembling rods 222, a moving block 15 is sleeved on the side wall of the reciprocating screw rod 221, a stirring assembly is arranged at the bottom end of the moving block 15 and comprises a waterproof box 17 fixedly arranged at the bottom end of the moving block 15, a second motor 18 is fixedly arranged in the waterproof box 17, a supporting rod 19 is rotatably arranged at the bottom end of the waterproof box 17, the top end of the supporting rod 19 penetrates through the waterproof box 17 and is fixedly connected with an output shaft of the second motor 18, a plurality of groups of second stirring plates 20 which are linearly distributed are fixedly arranged on the side wall of the supporting rod 19, the same group of second stirring plates 20 are at least five and are located the bracing piece 19 and are distributed in an annular array, stirring spiral blades 21 are fixedly sleeved on the side wall of the lower section of the bracing piece 19, after additives are uniformly sprayed onto the surface of the permeate liquid, the bracing piece 19 is driven to rotate through a second motor 18, the bracing piece 19 drives the second stirring plates 20 and the stirring spiral blades 21 to synchronously rotate, permeate liquid and additives are stirred through the second stirring plates 20 and the stirring spiral blades 21, so that the permeate liquid and the additives are uniformly mixed, the stirring spiral blades 21 play a role of stirring the permeate liquid, the permeate liquid at the bottom of the treatment tank 1 can upwards surge, the permeate liquid and the additives are uniformly mixed conveniently, and the improvement of the mixing efficiency of the permeate liquid and the additives is facilitated.

The dwang 22 is kept away from mounting panel 12 one end and is connected with drive assembly, drive assembly includes fixed mounting in the mounting box 3 of the mounting panel 12 one side of keeping away from in treatment tank 1, fixed mounting has third motor 23 in the mounting box 3, and the relative one end fixed connection of third motor 23 output shaft and dwang 22, fixed mounting has the firm pole in the treatment tank 1, the firm pole lateral wall is located to movable block 15 sliding sleeve, the equal fixed mounting in movable block 15 both sides has installation pole 14, and the equal fixed mounting in two installation pole 14 bottom has the first stirring board 16 that is sharp distribution, the equal fixed sleeve of one end lateral wall that two assembly poles 222 are relative is equipped with the baffle ring, drive the dwang 22 through third motor 23 and rotate, make movable block 15 be located reciprocating screw 221 lateral wall, movable block 15 carries installation pole 14 and first stirring board 16 synchronous movement, can play the effect of stirring infiltration liquid, and movable block 15 carries second stirring board 20 and stirring spiral leaf 21 synchronous movement, the infiltration liquid of different positions in the treatment tank 1 of being convenient for stir, be favorable to improving infiltration liquid and additive's mixed efficiency.

The filter frame 10 and the treatment tank 1 are communicated with each other, the connecting pipe 8 is arranged in the filter frame 10, the filter assembly comprises two drying plates 102 which are slidably arranged in the filter frame 10, a plurality of purification plates 101 which are distributed in a linear array are slidably arranged in the filter frame 10, clamping blocks 11 are fixedly arranged on two sides of each drying plate 102 and each purification plate 101, clamping grooves which are formed in the inner wall of the filter frame 10 and are matched with the clamping blocks 11 on the same side are fixedly arranged in the connecting pipe 8, a mounting ring 81 is fixedly arranged in the mounting ring 81, a guide fan 811 is arranged in the mounting ring 81, an air outlet pipe is arranged at one end, away from the treatment tank 1, of the filter frame 10, wind power is used for guiding waste gas into the filter frame 10 through the guide fan 811, the effect of drying and purifying the gas is achieved through the arrangement of the drying plates 102 and the purification plates 101, the effect of reducing the pollution of the gas to the air is facilitated, the purification plates 101 are filter plates which correspond to the harmful substances in the waste gas, such as hydrogen sulfide adsorption plates and the like, the drying plates 102 and the purification plates 101 are fixedly clamped by clamping grooves formed in the inner wall of the filter frame 10 through the clamping grooves of the clamping blocks 11, and the clamping grooves are convenient for workers to replace the subsequent drying plates 102 and the purification plates 101, and the filter equipment are beneficial to maintain the filtering effects.

The implementation principle of the embodiment of the application is as follows: when the equipment is used, the staff injects the additive into the liquid storage tank 6 through the filling tube, stir the additive through mixing assembly, help avoiding the additive to produce the sediment, be favorable to keeping the quality of additive, afterwards, the staff injects the permeate into the treatment tank 1 through the inlet tube, evenly spray the additive to the permeate surface through spraying assembly with in the liquid storage tank 6, afterwards, stir the permeate through stirring assembly, make permeate and the even mixture of additive, and drive the dwang 22 through the actuating assembly and rotate, make movable block 15 carry stirring assembly to be located reciprocating motion on reciprocating screw 221, be convenient for stir the permeate of different positions in the treatment tank 1, be favorable to improving the efficiency that permeate and additive mix, the permeate can produce poisonous gas, the gas gets into in the filter frame 10 through connecting tube 8, filter frame 10 is equipped with filter assembly, play the effect of filtering clean gas, be favorable to reducing the waste gas that the permeate produced to the environmental protection of environment, be favorable to improving the environmental protection of equipment, fix through bolt and nut spiro union between apron 9 and the filter frame 10, and apron 9 are equipped with rubber pad and nut bottom, be favorable to improving apron 9 and filter frame stability and seal property of assembling 10.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (7)

1. The utility model provides a landfill leachate equalizing basin, includes treatment tank (1), its characterized in that: the top of one side of the treatment tank (1) is provided with a water inlet pipe, the top of the treatment tank (1) is hinged with a top plate (2), the top of the top plate (2) is fixedly provided with a liquid storage tank (6), the top of the liquid storage tank (6) is provided with a feeding pipe, one side of the treatment tank (1) far away from the water inlet pipe is fixedly provided with a mounting plate (12), the top of the mounting plate (12) is provided with a filter frame (10), and the top of the filter frame (10) is hinged with a cover plate (9); a spraying assembly is arranged between the liquid storage tank (6) and the top plate (2), and a mixing assembly is arranged in the liquid storage tank (6); the device is characterized in that a rotating rod (22) is rotatably arranged in the treatment tank (1), the rotating rod (22) comprises two assembling rods (222) rotatably arranged on the inner wall of the treatment tank (1), a reciprocating screw rod (221) is fixedly connected between the two assembling rods (222), a moving block (15) is sleeved on the side wall of the reciprocating screw rod (221), one end, far away from the mounting plate (12), of the rotating rod (22) is connected with a driving assembly, and the bottom end of the moving block (15) is provided with a stirring assembly; a connecting pipe (8) is communicated between the filter frame (10) and the treatment tank (1), a filter assembly is arranged in the filter frame (10), and an air outlet pipe is arranged at one end, far away from the treatment tank (1), of the filter frame (10).

2. A landfill leachate conditioning tank according to claim 1, characterized in that: the spraying assembly comprises a water suction pump (25) fixedly mounted on the inner wall of the bottom end of the liquid storage tank (6), a sealing gasket is fixedly mounted at the bottom end of the top plate (2), a coil pipe (13) is fixedly mounted at the bottom end of the top plate (2), spray heads which are linearly distributed are fixedly mounted on the side wall of the coil pipe (13), and a guide pipe (7) is connected between the coil pipe (13) and the water suction pump (25).

3. A landfill leachate conditioning tank according to claim 1, characterized in that: the mixing assembly comprises a first motor (4) fixedly mounted on one side of a liquid storage tank (6), a supporting rod (5) is fixedly mounted on an output shaft of the first motor (4), one end of the supporting rod (5) far away from the first motor (4) extends into the liquid storage tank (6), a plurality of groups of mixing rods (24) which are distributed in a linear array are fixedly mounted on one end side wall of the supporting rod (5) penetrating through the liquid storage tank (6), and the mixing rods (24) are at least three and located on the side wall of the supporting rod (5) in a circular array.

4. A landfill leachate conditioning tank according to claim 1, characterized in that: the drive assembly comprises a mounting box (3) fixedly mounted on one side, far away from the mounting plate (12), of the treatment tank (1), a third motor (23) is fixedly mounted in the mounting box (3), the output shaft of the third motor (23) is fixedly connected with one opposite end of a rotating rod (22), a stabilizing rod is fixedly mounted in the treatment tank (1), the side wall of the stabilizing rod is sleeved with a moving block (15) in a sliding mode, mounting rods (14) are fixedly mounted on two sides of the moving block (15), first stirring plates (16) which are linearly distributed are fixedly mounted on the bottom ends of the mounting rods (14), and baffle rings are fixedly sleeved on the side wall of one opposite end of the assembly rod (222).

5. A landfill leachate conditioning tank according to claim 1, characterized in that: the stirring assembly comprises a waterproof box (17) fixedly mounted at the bottom end of a moving block (15), a second motor (18) is fixedly mounted in the waterproof box (17), a supporting rod (19) is rotatably mounted at the bottom end of the waterproof box (17), the top end of the supporting rod (19) penetrates through the waterproof box (17) and is fixedly connected with an output shaft of the second motor (18), a plurality of groups of second stirring plates (20) which are linearly distributed are fixedly mounted on the side wall of the supporting rod (19), at least five second stirring plates (20) are uniformly distributed and are located on the supporting rod (19) in an annular array, and stirring spiral blades (21) are fixedly sleeved on the side wall of the lower section of the supporting rod (19).

6. A landfill leachate conditioning tank according to claim 1, characterized in that: the filter assembly comprises two drying plates (102) which are slidably mounted in a filter frame (10), a plurality of purification plates (101) which are distributed in a linear array are slidably mounted in the filter frame (10), clamping blocks (11) are fixedly mounted on two sides of each of the drying plates (102) and the two sides of each of the purification plates (101), and clamping grooves which are formed in the inner wall of the filter frame (10) and matched with the clamping blocks (11) are formed in the same side of the inner wall of the filter frame.

7. A landfill leachate conditioning tank according to claim 1, characterized in that: the connecting pipe (8) is internally and fixedly provided with a mounting ring (81), and a diversion fan (811) is arranged in the mounting ring (81).