CN212481308U - Waste incineration purification device - Google Patents

Waste incineration purification device Download PDF

Info

Publication number
CN212481308U
CN212481308U CN202020725042.2U CN202020725042U CN212481308U CN 212481308 U CN212481308 U CN 212481308U CN 202020725042 U CN202020725042 U CN 202020725042U CN 212481308 U CN212481308 U CN 212481308U
Authority
CN
China
Prior art keywords
transmission shaft
box
incineration
tank
top surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020725042.2U
Other languages
Chinese (zh)
Inventor
伍小棉
周建潮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Sucheng Hongyao Environmental Protection Technology Co ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202020725042.2U priority Critical patent/CN212481308U/en
Application granted granted Critical
Publication of CN212481308U publication Critical patent/CN212481308U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Chimneys And Flues (AREA)

Abstract

The utility model discloses a msw incineration purifier, including smashing the case and burning the case, it is provided with to smash case one side and burns the case, and burns the inside fixedly connected with of case and hold the board to it is provided with the gas shower nozzle to hold board below. Has the advantages that: the utility model discloses a puddler, the connecting rod, universal joint, the cooler bin, transmission shaft and motor, when carrying out msw incineration, the motor drives the transmission shaft and rotates, the transmission shaft passes through universal joint and drives the connecting rod and rotate the connecting rod and drive the puddler rotation, the rubbish stirring that will burn, and turn rubbish, avoid rubbish to pile up and produce and burn impervious phenomenon, thereby improve combustion efficiency, and simultaneously, heat during the burning is transmitted universal joint department through the connecting rod from the puddler, transmit the transmission shaft by universal joint again, the transmission shaft passes the cooler bin, let in the cooling water and cool down to the transmission shaft in the cooler bin, thereby avoid the transmission shaft overheated and arouse the motor damage, the stability of using is improved.

Description

Waste incineration purification device
Technical Field
The utility model relates to a msw incineration purifies technical field, particularly, relates to a msw incineration purifier.
Background
The waste incineration is an ancient traditional method for treating the waste, because the waste is treated by an incineration method, the reduction effect is obvious, the land is saved, various pathogens can be eliminated, toxic and harmful substances can be converted into harmless substances, the waste incineration method becomes one of the main methods for treating the urban waste, and the modern waste incinerator is provided with a good smoke dust purification device to reduce the pollution to the atmosphere.
When carrying out msw incineration, need drop into msw incineration in the msw incineration stove and burn, when the rubbish that drops into was too much, can lead to rubbish to pile up, the rubbish after piling up is difficult to burn through, consequently can influence incineration efficiency, simultaneously, can produce material such as a large amount of sulfides, nitrate and dioxin in the msw incineration, can influence the air quality in discharging to the air, arouse the pollution, simultaneously, although good smoke and dust purifier has been equipped with in the present stage, the purifying effect to compound or the dioxin that is difficult to get rid of is not good, can also further be improved.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a waste incineration purifier possesses the advantage that improves combustion efficiency, uses environmental protection more, and then solves the problem among the above-mentioned background art.
(II) technical scheme
For the advantage of realizing above-mentioned improvement combustion efficiency, use environmental protection more, the utility model discloses a concrete technical scheme as follows:
the utility model provides a msw incineration purifier, is including smashing the case and burning the case, it is provided with to smash case one side and burns the case, and burns the inside fixedly connected with of case and hold the board to it is provided with the gas shower nozzle to hold the board below, it is provided with the puddler to burn the incasement portion and be located and hold the board top surface, and puddler top surface central point puts and is provided with the connecting rod to the connecting rod runs through burns the case and extends to burn case top, it has the motor to burn case top surface fixed mounting, and the motor output end is connected with the transmission shaft, and the transmission shaft passes through universal coupling and is connected with the connecting rod top surface, the transmission shaft surface is provided with the cooler bin, and the transmission shaft runs through the cooler bin to transmission shaft and cooler bin handing-over department are provided with sealed bearing, cooler bin top surface through connection has the water inlet.
Further, it sprays the case to burn case one side and is provided with the first case that sprays, and burns the case top through first connecting pipe and the first bottom through connection that sprays, the first case opposite side that sprays is provided with the second and sprays the case, and the first case top that sprays through second connecting pipe and the second bottom through connection, the second sprays the case opposite side and is provided with the activated carbon box, and the second sprays the case and pass through third connecting pipe and activated carbon box through connection, the first incasement portion that sprays is provided with first shower nozzle, the second sprays the incasement portion and is provided with the second shower nozzle, first shower nozzle and urea solution injection equipment through connection, second shower nozzle and complex iron solution injection equipment through connection.
Further, smash the case top surface and seted up the feed inlet, and smash incasement portion and be located the feed inlet below and be provided with the rubbing crusher to the rubbing crusher below is located crushing incasement portion slant and is provided with the bottom plate, bottom plate top surface sliding connection has the push pedal, and push pedal side surface rotates with the screw rod through rotating the connecting piece and be connected, smash case opposite side surface fixed mounting has screw rod lift, the screw rod run through smash case opposite side surface and with screw rod lift threaded connection, smash case one side surface and be located bottom plate one end and seted up the discharge gate, it has the shutter to be located that bottom plate one end articulates to smash case one side surface, and shutter opposite side below surface fixedly connected with balancing weight.
Furthermore, the surface of the containing plate is provided with a leak hole, and the aperture of the leak hole is smaller than the minimum particle size of the crushed garbage.
Furthermore, the stirring rod and the connecting rod are made of tungsten steel alloy, and two ends of the stirring rod are tilted upwards.
Furthermore, the inclination angle of the bottom plate is not less than 15 degrees, and the top surface of the bottom plate is of a smooth structure.
(III) advantageous effects
Compared with the prior art, the utility model provides a waste incineration purifier possesses following beneficial effect:
(1) the utility model discloses a puddler, the connecting rod, universal joint, the cooler bin, transmission shaft and motor, when carrying out msw incineration, the motor drives the transmission shaft and rotates, the transmission shaft drives the connecting rod through universal joint and rotates the connecting rod and drive the puddler rotation, the rubbish stirring that will burn, and turn rubbish, avoid rubbish to pile up and produce and burn impervious phenomenon, thereby improve combustion efficiency, and simultaneously, heat during the burning is transmitted universal joint department through the connecting rod from the puddler, transmit the transmission shaft by universal joint again, the transmission shaft passes the cooler bin, let in the cooling water and cool down the transmission shaft in the cooler bin, thereby avoid the transmission shaft overheated and arouse the motor damage, the stability of using is improved.
(2) The utility model adopts a first spray box, a second spray box and an active carbon box, the burned gas is transmitted into the first spray box through a first connecting pipe, a first spray head in the first spray box sprays urea liquid, mixing with the waste gas, removing nitrate ions in the waste gas, denitrating, feeding the denitrated waste gas into a second spray tank through a second connecting pipe, a second spray head in the second spray box sprays complexing iron solution which removes sulfate ions in the waste gas, the waste gas after denitration is desulfurized, the desulfurized and denitrated waste gas enters the activated carbon box through the third connecting pipe, the active carbon adsorbs dioxin in the waste gas, and the waste gas generated by burning is discharged after denitration, desulfurization and dioxin removal, so that the harmful components in the waste gas are greatly reduced, the pollution to the environment is reduced, and the use is more environment-friendly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a waste incineration purification device provided by the present invention;
FIG. 2 is a cross-sectional view of the incineration box of the present invention;
fig. 3 is a schematic view of the internal structure of the cooling box of the present invention.
In the figure:
1. a crushing box; 2. a pulverizer; 3. a screw elevator; 4. a screw; 5. pushing the plate; 6. rotating the connecting piece; 7. a base plate; 8. a discharge port; 9. a shutter; 10. a balancing weight; 11. a holding plate; 12. a stirring rod; 13. a gas burner; 14. an incineration box; 15. a connecting rod; 16. a universal coupling; 17. a drive shaft; 18. a cooling tank; 19. a motor; 20. a feed inlet; 21. a first connecting pipe; 22. a first spray tank; 23. a first nozzle; 24. a second connecting pipe; 25. a second spray tank; 26. a second nozzle; 27. a third connecting pipe; 28. an activated carbon box; 29. a leak hole; 30. sealing the bearing; 31. a water inlet; 32. and (7) a water outlet.
Detailed Description
For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.
According to the utility model discloses an embodiment provides a waste incineration purifier.
Referring now to the drawings and the detailed description, as shown in fig. 1-3, a garbage incineration purifying device according to an embodiment of the present invention includes a crushing box 1 and an incineration box 14, the crushing box 1 is provided with an incineration box 14 on one side, the incineration box 14 is wrapped with fireproof heat insulation material, a holding plate 11 is fixedly connected inside the incineration box 14 for holding the incineration material, a gas nozzle 13 is provided below the holding plate 11, the gas nozzle 13 is ignited to spray flame for incineration, which is a common structure and not described herein, a stirring rod 12 is provided inside the incineration box 14 on the top surface of the holding plate 11, the bottom surface of the stirring rod 12 abuts against the top surface of the holding plate 11, a connecting rod 15 is provided at the center position of the top surface of the stirring rod 12, and the connecting rod 15 penetrates through the incineration box 14 and extends to the top of the incineration box 14, a motor 19 is fixedly mounted on the top surface of the incineration box 14, and the output end of the motor 19 is connected with a transmission shaft 17, and the transmission shaft 17 is connected with the top surface of the connecting rod 15 through a universal coupling 16, the outer surface of the transmission shaft 17 is provided with a cooling tank 18, and the transmission shaft 17 penetrates through the cooling tank 18, and the joint of the transmission shaft 17 and the cooling tank 18 is provided with a sealing bearing 30, the top surface of the cooling tank 18 is connected with a water inlet 31 through a communication way, and the bottom surface of the cooling tank 18 is connected with a water outlet 32 through a communication way, the water inlet 31 is connected with a cold water source through a water pipe, the sealing bearing 30 prevents water leakage, when the garbage is incinerated, the motor 19 drives the transmission shaft 17 to rotate, the transmission shaft 17 drives the connecting rod 15 to rotate through the universal coupling 16, the connecting rod 15 drives the stirring rod 12 to rotate, the incinerated garbage is uniformly stirred, and the garbage is turned over, the, and then the heat is transferred to the transmission shaft 17 by the universal coupling 16, the transmission shaft 17 passes through the cooling tank 18, and cooling water is introduced into the cooling tank 18 to cool the transmission shaft 17, so that the damage of the motor 19 caused by the overheating of the transmission shaft 17 is avoided, and the use stability is improved.
In one embodiment, a first spray box 22 is disposed on one side of the incineration box 14, the top surface of the incineration box 14 is connected to the bottom surface of the first spray box 22 through a first connection pipe 21, a second spray box 25 is disposed on the other side of the first spray box 22, the top surface of the first spray box 22 is connected to the bottom surface of the second spray box 25 through a second connection pipe 24, an activated carbon box 28 is disposed on the other side of the second spray box 25, the second spray box 25 is connected to the activated carbon box 28 through a third connection pipe 27, a first spray head 23 is disposed inside the first spray box 22, a second spray head 26 is disposed inside the second spray box 25, the first spray head 23 is connected to the urea solution injection device, the second spray head 26 is connected to the iron complex solution injection device, the urea denitration and iron desulphurization are common technologies, and will not be described herein, activated carbon is contained in the activated carbon box 28, the gas after burning is transmitted to first spray box 22 through first connecting pipe 21, first shower nozzle 23 blowout urea liquid in first spray box 22, mix with waste gas, detach the nitrate ion in the waste gas, the denitration is carried out, waste gas after the denitration gets into in second spray box 25 through second connecting pipe 24, second shower nozzle 26 blowout complex iron solution in the second spray box 25, the sulfate ion in the waste gas is detached to complex iron solution, carry out the desulfurization to waste gas after the denitration, waste gas after desulfurization and denitration gets into in activated carbon box 28 through third connecting pipe 27, the dioxin in the waste gas is adsorbed to the active carbon, waste gas that burns the production passes through the denitration, discharge behind the desulfurization and the removal dioxin, the harmful component in the waste gas has greatly reduced, the pollution to the environment has been reduced, use more environmental protection.
In one embodiment, the top surface of the crushing box 1 is provided with a feeding hole 20, the inside of the crushing box 1 is provided with a crusher 2 below the feeding hole 20, garbage enters from the feeding hole 20 and is crushed by the crusher 2 to be convenient for burning, a bottom plate 7 is obliquely arranged below the crusher 2 and inside the crushing box 1, the top surface of the bottom plate 7 is slidably connected with a push plate 5, one side surface of the push plate 5 is rotatably connected with a screw 4 through a rotating connecting piece 6, the other side surface of the crushing box 1 is fixedly provided with a screw lifter 3, the screw 4 penetrates through the other side surface of the crushing box 1 and is in threaded connection with the screw lifter 3, the screw lifter 3 drives the screw 4 to move, the screw 4 drives the push plate 5 to move, one side surface of the crushing box 1 is positioned at one end of the bottom plate 7 and is provided with a discharging hole 8, the push plate 5 moves to push the garbage, and the surface of the lower part of the other side of the stop door 9 is fixedly connected with a balancing weight 10, the balancing weight 10 lowers the gravity center of the stop door 9, and after the garbage is pushed out of the discharge hole 8, the stop door 9 is automatically closed under the driving of the balancing weight 10, so that hot air is prevented from entering the crushing box 1.
In one embodiment, the holding plate 11 is provided with holes 29, and the holes 29 have a diameter smaller than the minimum diameter of the crushed garbage, so that the holes 29 can facilitate the flame to pass through and the ash to fall off.
In one embodiment, the stirring rod 12 and the connecting rod 15 are made of tungsten steel alloy, and two ends of the stirring rod 12 are tilted upwards, and the stirring rod 12 and the connecting rod 15 made of tungsten steel alloy have high melting point and strong high-temperature deformation resistance and are suitable for being used in a high-temperature environment for a long time.
In one embodiment, the inclination angle of the bottom plate 7 is not less than 15 degrees and the top surface of the bottom plate 7 is of a smooth structure, so that garbage can slide down conveniently.
The working principle is as follows:
the device is moved to a proper position, a power supply is switched on, when the device is incinerated, the motor 19 drives the transmission shaft 17 to rotate, the transmission shaft 17 drives the connecting rod 15 to rotate through the universal coupling 16, the connecting rod 15 drives the stirring rod 12 to rotate, the incinerated garbage is uniformly stirred and turned, the garbage is prevented from being accumulated to generate the phenomenon of burning-tight, thereby improving the combustion efficiency, meanwhile, the heat during combustion is transmitted to the universal coupling 16 from the stirring rod 12 through the connecting rod 15 and then transmitted to the transmission shaft 17 through the universal coupling 16, the transmission shaft 17 penetrates through the cooling tank 18, cooling water is introduced into the cooling tank 18 to cool the transmission shaft 17, thereby avoiding the damage of the motor 19 caused by overheating of the transmission shaft 17 and improving the use stability, meanwhile, the incinerated gas is transmitted to the first spray tank 22 through the first connecting pipe 21, the first spray head 23 in the first spray tank 22 sprays urea liquid, mix with waste gas, detach the nitrate ion in the waste gas, the denitration is carried out, waste gas after the denitration gets into the second through second connecting pipe 24 and sprays case 25, the second shower nozzle 26 blowout complex iron solution in the second sprays case 25, the sulfate ion in the complex iron solution detach waste gas, carry out the desulfurization to waste gas after the denitration, waste gas after desulfurization and denitration gets into in activated carbon box 28 through third connecting pipe 27, the dioxin in the activated carbon adsorption waste gas, the waste gas that burns the production is through the denitration, discharge behind the desulfurization and the removal dioxin, harmful component in the waste gas has been reduced greatly, the pollution to the environment has been reduced, use environmental protection more.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the rod, which may be directly connected or indirectly connected through an intermediate medium, may be a communication between the inside of two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the specific meaning of the above terms in the present invention will be understood to those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The waste incineration purification device is characterized by comprising a crushing box (1) and an incineration box (14), wherein the incineration box (14) is arranged on one side of the crushing box (1), a containing plate (11) is fixedly connected inside the incineration box (14), a gas spray head (13) is arranged below the containing plate (11), a stirring rod (12) is arranged on the top surface of the containing plate (11) inside the incineration box (14), a connecting rod (15) is arranged at the central position of the top surface of the stirring rod (12), the connecting rod (15) penetrates through the incineration box (14) and extends to the upper side of the incineration box (14), a motor (19) is fixedly arranged on the top surface of the incineration box (14), the output end of the motor (19) is connected with a transmission shaft (17), the transmission shaft (17) is connected with the top surface of the connecting rod (15) through a universal coupling (16), a cooling box (18) is arranged on the outer surface of the transmission shaft (17), and transmission shaft (17) run through cooling tank (18) to transmission shaft (17) and cooling tank (18) handing-over department are provided with sealed bearing (30), cooling tank (18) top surface through connection has water inlet (31), and cooling tank (18) bottom surface through connection has delivery port (32).
2. The waste incineration purification device according to claim 1, wherein a first spray tank (22) is disposed at one side of the incineration tank (14), the top surface of the incineration tank (14) is connected with the bottom surface of the first spray tank (22) through a first connecting pipe (21), a second spray tank (25) is disposed at the other side of the first spray tank (22), the top surface of the first spray tank (22) is connected with the bottom surface of the second spray tank (25) through a second connecting pipe (24), an activated carbon tank (28) is disposed at the other side of the second spray tank (25), the second spray tank (25) is connected with the activated carbon tank (28) through a third connecting pipe (27), a first spray head (23) is disposed inside the first spray tank (22), a second spray head (26) is disposed inside the second spray tank (25), and the first spray head (23) is connected with a urea solution injection device, and the second spray head (26) is communicated with the complexing iron solution injection equipment.
3. The waste incineration purification device according to claim 1, wherein a feed inlet (20) is formed in the top surface of the crushing box (1), the crusher (2) is arranged below the feed inlet (20) in the crushing box (1), a bottom plate (7) is obliquely arranged below the crusher (2) and inside the crushing box (1), a push plate (5) is slidably connected to the top surface of the bottom plate (7), one side surface of the push plate (5) is rotatably connected with a screw (4) through a rotating connecting piece (6), a screw lifter (3) is fixedly arranged on the other side surface of the crushing box (1), the screw (4) penetrates through the other side surface of the crushing box (1) and is in threaded connection with the screw lifter (3), a discharge outlet (8) is formed in one end of the bottom plate (7) in one side surface of the crushing box (1), and a stop door (9) is hinged to one end of the bottom plate (7) in one side surface of the crushing box (1), and a balancing weight (10) is fixedly connected to the surface below the other side of the stop door (9).
4. A waste incineration purification device according to claim 1, characterized in that the surface of the containing plate (11) is provided with a plurality of holes (29), and the diameter of the holes (29) is smaller than the minimum particle size of the crushed waste.
5. A waste incineration purification device according to claim 1, wherein the stirring rod (12) and the connecting rod (15) are made of tungsten steel alloy, and two ends of the stirring rod (12) are tilted upwards.
6. A waste incineration purification device according to claim 3, characterized in that the bottom plate (7) is inclined at an angle not less than 15 ° and the top surface of the bottom plate (7) is of a smooth structure.
CN202020725042.2U 2020-05-06 2020-05-06 Waste incineration purification device Active CN212481308U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020725042.2U CN212481308U (en) 2020-05-06 2020-05-06 Waste incineration purification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020725042.2U CN212481308U (en) 2020-05-06 2020-05-06 Waste incineration purification device

Publications (1)

Publication Number Publication Date
CN212481308U true CN212481308U (en) 2021-02-05

Family

ID=74454567

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020725042.2U Active CN212481308U (en) 2020-05-06 2020-05-06 Waste incineration purification device

Country Status (1)

Country Link
CN (1) CN212481308U (en)

Similar Documents

Publication Publication Date Title
CN203628674U (en) Whole-set hazardous waste incinerator device
US20200208836A1 (en) Garbage incineration device for garbage disposal
CN207222544U (en) A kind of fixed-end forces device
CN206709080U (en) A kind of automatic lime-ash fire grate device of pyrolytic gasification
CN217978815U (en) Waste incineration device
CN110274246B (en) A gasification, incineration and melting integrated furnace
CN209736318U (en) Domestic garbage treatment device
CN212481308U (en) Waste incineration purification device
CN107504492B (en) Industrial sludge, waste emulsion residue and metallurgical ash combined treatment system and power generation process thereof
CN110864569A (en) Unburned coal powder recovery device for power plant
CN207132350U (en) A kind of waste incinerator of high-efficiency environment friendly
CN211502788U (en) Waste plastic environmental protection incineration device for building construction
CN220968743U (en) Coal-saving agent mixing device
CN221005069U (en) Organic solid waste coupling incinerator
CN218095949U (en) Device for ecologically treating garbage
CN108167835B (en) A fully intelligent harmless waste incineration system
CN104990085A (en) Biomass processing system
CN208952114U (en) A kind of energy-saving refuse gasification processing after-combustion generating equipment
CN210219786U (en) Urban environment refuse treatment is with burning furnace that burns
CN207880843U (en) A kind of centrifugal garbage combustion device
CN209180955U (en) A kind of environmental protection treatment engineering refuse disposal installation
CN222781571U (en) Filtering device for auxiliary biomass garbage gasification equipment
CN108061302A (en) The method and device of domestic garbage gasification melting is carried out using iron liquid
CN221674062U (en) Fly ash feeding mixing device
CN218544467U (en) Hot blast stove for incineration disposal of sludge carbonization tail gas

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20230926

Address after: Room 408, Unit 4, Building 11, Tianrun City Second Street, No. 628 Jingxin, Pukou District, Nanjing City, Jiangsu Province, 211800

Patentee after: Chen Fu

Address before: 510000 Datang Innovation Industrial Park, Huangge Town, Nansha District, Guangzhou City, Guangdong Province

Patentee before: Zhou Jianchao

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20231117

Address after: 213000 No. 9, Zheng Qiang Road, Xinbei District, Changzhou, Jiangsu.

Patentee after: Jiangsu Sucheng Hongyao Environmental Protection Technology Co.,Ltd.

Address before: Room 408, Unit 4, Building 11, Tianrun City Second Street, No. 628 Jingxin, Pukou District, Nanjing City, Jiangsu Province, 211800

Patentee before: Chen Fu