Sludge mixing equipment for coal-fired power plant

Abstract

The utility model discloses sludge mixing equipment based on a coal-fired power plant, which comprises a stirring device, a feeding device, a sludge mixing device and a sludge mixing device, wherein the outer wall of the top of the stirring device is fixedly connected with the feeding device; the utility model relates to the technical field of sludge mixing. According to the device, through the stirring device and the discharging device and through cooperative operation of a motor, a speed reducer, an adjusting gear and a stirring gear, the rotating speed of a stirring shaft and stirring blades can be accurately adjusted, the device adapts to the characteristics of different types of sludge and coal materials, and when the inner wall of a stirring box and the stirring blades need to be cleaned, only an opening and closing plate needs to be rotated through a handle; the inner space of the stirring device can be rapidly opened by simply pressing the stirring device, a coal feeding hopper and a sludge discharging pipe in the discharging device provide independent feeding channels for coal and sludge respectively, the sludge discharging pipe is provided with an anti-blocking structure, when material attachment or unsmooth discharging occurs, a compression spring is compressed by simply pressing a pressing plate, and the sludge is discharged through the anti-blocking structure. And the scraping plate can be driven to scrape and clean along the inner wall of the discharging pipe.

Description

Technical Field

[0001] This utility model relates to the field of sludge mixing technology, specifically to a sludge mixing device for use in coal-fired power plants. Background Technology

[0002] With increasingly stringent environmental protection requirements and a growing emphasis on the comprehensive utilization of energy resources, coal-fired power plants face new challenges and opportunities during their operation. On the one hand, coal-fired power plants generate large amounts of waste and pollutants during coal combustion for power generation. On the other hand, municipal facilities such as urban sewage treatment plants produce large quantities of sludge. Mixing this sludge with the coal from coal-fired power plants and then burning the mixture for power generation has become a promising solution.

[0003] However, in the process of mixing sludge and coal, traditional mixing devices are prone to clogging of the feed pipe during the feeding process due to the high viscosity of sludge. Once a blockage occurs, it will not only interrupt the mixing process, but may also damage the equipment, affecting its normal operation and service life. Moreover, during long-term operation, residual materials will remain inside the mixing device. If they cannot be cleaned easily and quickly, these residual materials will gradually accumulate, corroding equipment parts, reducing the performance and reliability of the equipment, increasing the maintenance and repair costs, and may even cause safety accidents. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a sludge mixing device for coal-fired power plants, characterized in that it includes: a stirring device, wherein a feeding device is fixedly connected to the outer wall of the top of the stirring device; the stirring device includes a stirring tank, wherein a stirring shaft is rotatably connected to the inner wall of the stirring tank, a stirring blade is fixedly connected to the outer wall of the stirring shaft, a stirring gear is fixedly connected to the outer wall of the stirring shaft on the side away from the stirring tank, a base plate is fixedly connected to the outer wall of the side of the stirring tank, an adjusting frame is fixedly connected to the outer wall of the top of the base plate, a rotating shaft is rotatably connected to the inner wall of the adjusting frame, an adjusting gear is fixedly connected to the outer wall of the rotating shaft, a reducer is rotatably connected to the outer wall of the rotating shaft on the side away from the adjusting gear, and a motor is rotatably connected to the outer wall of the reducer.

[0005] Preferably, the stirring blade is arranged along the outer wall of the stirring shaft, the stirring blade is arranged in the interior of the stirring box, the stirring gear and the adjusting gear are arranged in the interior of the adjusting frame, the outer wall of the stirring shaft is rotationally connected with the inner wall of the adjusting frame, and the outer wall of the stirring gear is engaged with the outer wall of the adjusting gear.

[0006] Preferably, the outer wall of the speed reducer is fixedly connected with the outer wall of the adjusting frame, and the outer wall of the bottom of the motor is fixedly connected with the outer wall of the top of the base plate.

[0007] Preferably, the discharging device comprises a cover plate, the inner wall of the cover plate is fixedly connected with a coal feeding hopper and a sludge discharging pipe, the inner wall of the side of the sludge discharging pipe is fixedly connected with a feeding pipe, the inner wall of the top of the sludge discharging pipe is slidably connected with a pressing rod, the outer wall of the top of the pressing rod is fixedly connected with a pressing plate, the outer wall of the pressing plate is fixedly connected with a compression spring, the outer wall of the bottom of the pressing rod is fixedly connected with a scraper, and the inner wall of the cover plate is rotationally connected with an opening and closing plate.

[0008] Preferably, the outer wall of the side, away from the pressing plate, of the compression spring is fixedly connected with the outer wall of the top of the sludge discharging pipe, and the outer wall of the scraper is slidably connected with the inner wall of the sludge discharging pipe.

[0009] Preferably, the outer wall of the top of the stirring box is fixedly connected with the outer wall of the bottom of the cover plate, the outer wall of the top of the stirring box is in contact with the outer wall of the bottom of the opening and closing plate, coal enters the stirring device below the cover plate through the coal feeding hopper, and sludge enters the stirring device below the cover plate from the sludge discharging pipe through the feeding pipe.

[0010] The utility model discloses the following advantages:

[0011] 1.The utility model discloses a stirring device is provided with, through the coordination operation of motor, speed reducer, adjusting gear and stirring gear, can accurately adjust the rotating speed of stirring shaft and stirring blade, adapts to the characteristics of different kinds of sludge and coal material, ensures that the both realizes full and even mixing in the stirring box, and the opening and closing plate of stirring box top provides great convenience for the cleaning work of equipment inside, when needing to clean the stirring box inner wall and stirring blade, only need to rotate the handle opening and closing plate, can open the internal space of stirring device quickly, and the operator can easily enter the inside and carry out comprehensive cleaning work.

[0012] 2.The utility model discloses a setting down feeder, and the coal material feeding hopper and sludge down feeder pipe in down feeder provide independent feeding channel for coal material and sludge respectively, and the sludge down feeder pipe is equipped with anti - jamming structure, when the material adhesion or down feeder is not smooth, through simple pressing the pressing plate and making compression spring be compressed, can drive the scraper to scrape and clean along the down feeder inner wall, and timely remove the blockage, and restore the smooth flow of material. DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of the utility model;

[0014] Figure 2 It is the structure schematic diagram of the utility model inside;

[0015] Figure 3 It is the structure schematic diagram of the down feeder of the utility model;

[0016] Figure 4 It is the structure schematic diagram of sludge down feeder pipe of the utility model;

[0017] Figure 5 It is the structure schematic diagram of adjusting frame of the utility model.

[0018] In the drawing: 1, stirring device;11, stirring box;12, stirring shaft;13, stirring blade;14, stirring gear;15, base plate;16, adjusting frame;17, rotating shaft;18, adjusting gear;19, speed reducer;191, motor;2, down feeder;21, cover plate;22, coal material feeding hopper;23, sludge down feeder pipe;24, feeding pipe;25, pressure rod;26, pressing plate;27, compression spring;28, scraper;29, opening and closing plate. DETAILED DESCRIPTION

[0019] The embodiments of the present application are presented by way of example and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present application and practical application, and to enable those of ordinary skill in the art to understand the present application in order to design various embodiments with various modifications suitable for specific purposes.

[0020] Embodiments:

[0021] Please refer to Figure 1 - Figure 5 The utility model provides a kind of technical scheme: a kind of sludge mixing equipment based on coal-fired power plant, it is characterized by comprising: stirring device 1, the outer wall of the top of stirring device 1 is fixedly connected with discharging device 2;Stirring device 1 includes stirring box 11, the inner wall of stirring box 11 is rotatably connected with stirring shaft 12, the outer wall of stirring shaft 12 is fixedly connected with stirring blade 13, the outer wall of the side of stirring shaft 12 away from stirring box 11 is fixedly connected with stirring gear 14, the outer wall of the top of base plate 15 is fixedly connected with adjusting frame 16, the inner wall of adjusting frame 16 is rotatably connected with shaft 17, the outer wall of shaft 17 is fixedly connected with adjusting gear 18, the outer wall of the side of shaft 17 away from adjusting gear 18 is rotatably connected with speed reducer 19, the outer wall of speed reducer 19 is rotatably connected with motor 191.

[0022] Stirring blade 13 is arrayed along the outer wall of stirring shaft 12, stirring blade 13 is arranged in the inside of stirring box 11, stirring gear 14 and adjusting gear 18 are arranged in the inside of adjusting frame 16, the outer wall of stirring shaft 12 is rotatably connected with the inner wall of adjusting frame 16, the outer wall of stirring gear 14 is engaged with the outer wall of adjusting gear 18, when shaft 17 rotates in adjusting frame 16, because shaft 17 is fixedly connected with adjusting gear 18, and adjusting gear 18 is engaged with stirring gear 14 on stirring shaft 12, when adjusting gear 18 rotates, it will drive stirring gear 14 to rotate, in turn make stirring shaft 12 start to rotate.

[0023] The outer wall of speed reducer 19 is fixedly connected with the outer wall of adjusting frame 16, the outer wall of the bottom of motor 191 is fixedly connected with the outer wall of the top of base plate 15, the rotation of motor 191 is adjusted in rotation speed by speed reducer 19 connected therewith, the function of speed reducer 19 is to reduce the higher rotation speed of motor 191 output to appropriate rotation speed according to actual stirring demand, power after deceleration is transmitted to shaft 17.

[0024] The blanking device 2 comprises a cover plate 21, the inner wall of the cover plate 21 is fixedly connected with a coal feeding hopper 22 and a sludge blanking pipe 23, the inner wall of the side of the sludge blanking pipe 23 is fixedly connected with a feeding pipe 24, the inner wall of the top of the sludge blanking pipe 23 is slidably connected with a pressing rod 25, the outer wall of the top of the pressing rod 25 is fixedly connected with a pressing plate 26, the outer wall of the pressing plate 26 is fixedly connected with a compression spring 27, the outer wall of the bottom of the pressing rod 25 is fixedly connected with a scraper 28, and the inner wall of the cover plate 21 is rotatably connected with an opening and closing plate 29.

[0025] The outer wall of the side, away from the pressing plate 26, of the compression spring 27 is fixedly connected with the outer wall of the top of the sludge blanking pipe 23, and the outer wall of the scraper 28 is slidably connected with the inner wall of the sludge blanking pipe 23; the pressing plate 26 is pressed to drive the pressing rod 25 to slide downward along the sludge blanking pipe 23, and at the same time, the scraper 28 is driven by the pressing rod 25 to move downward along the inner wall of the sludge blanking pipe 23; during the pressing process, because the pressing plate 26 is close to the top of the sludge blanking pipe 23, the compression spring 27 is compressed to store energy; the pressing plate 26 is released, and the scraper 28 is reset under the action of the compression spring 27.

[0026] The outer wall of the top of the stirring box 11 is fixedly connected with the outer wall of the bottom of the cover plate 21, and the outer wall of the top of the stirring box 11 is in contact with the outer wall of the bottom of the opening and closing plate 29; the coal enters the stirring device 1 below the cover plate 21 through the coal feeding hopper 22, and the sludge enters the stirring device 1 below the cover plate 21 from the sludge blanking pipe 23 after entering the sludge blanking pipe 23 from the feeding pipe 24.

[0027] Working principle: the motor 191 in the stirring device 1 serves as a power source of the whole stirring device 1; after being started, the rotation of the motor 191 is adjusted in speed through the speed reducer 19 connected therewith; the speed reducer 19 serves to reduce the higher output speed of the motor 191 to a suitable speed according to the actual stirring demand; the power after the speed reduction is transmitted to the rotating shaft 17 to drive the rotating shaft 17 to rotate in the adjusting frame 16; because the rotating shaft 17 is fixedly connected with the adjusting gear 18, and the adjusting gear 18 is engaged with the stirring gear 14 on the stirring shaft 12, when the adjusting gear 18 rotates, the stirring gear 14 is driven to rotate, and then the stirring shaft 12 starts to rotate; the stirring shaft 12 realizes stable rotation under the rotation support of the inner wall of the stirring box 11, and finally drives the stirring blade 13 fixed to the outer wall thereof to rotate in the stirring box 11 to implement stirring operation on the sludge and coal and the like entering the stirring box 11, so as to promote the materials to be fully mixed.

[0028] The sludge and coal and the like enter the stirring device 1 through the blanking device 2; the coal enters the stirring device 1 below the cover plate 21 through the coal feeding hopper 22, and the sludge enters the stirring device 1 below the cover plate 21 from the sludge blanking pipe 23 after entering the sludge blanking pipe 23 from the feeding pipe 24.

[0029] During the sludge discharging process, the compression spring 27 is in an extended state, when the sludge flows in the pipe, if there is material adhered to the inner wall or the discharging is not smooth, or there is a tendency of blockage, the pressing plate 26 drives the pressing rod 25 to slide downward along the sludge discharging pipe 23, at the same time, the scraper 28 is driven by the pressing rod 25 to move downward along the inner wall of the sludge discharging pipe 23, the scraper 28 can scrape and clean the inner wall of the sludge discharging pipe 23, avoid the material accumulation and blockage of the discharging pipe, ensure that the sludge can smoothly enter the inside of the stirring box 11, at the same time, during the pressing process, because the pressing plate 26 is close to the top of the sludge discharging pipe 23, the compression spring 27 is compressed and stored, after the scraping is completed, the pressing plate 26 is released, the scraper 28 is reset under the action of the compression spring 27, and the next pressing action is facilitated.

[0030] After the stirring is completed, the material will flow out from the discharge port opened on the outer wall of the stirring box 11 away from the substrate 15, when the inner wall of the stirring box 11 and the stirring blade 13 on the stirring shaft 12 need to be cleaned, the opening and closing plate 29 is opened by rotating the handle along the cover plate 21, and the inside of the stirring device 1 can be cleaned.

[0031] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A sludge mixing device for coal-fired power plants, characterized in that, Include: The stirring device (1), the outer wall of the top of the stirring device (1) is fixedly connected with the discharging device (2); The stirring device (1) comprises a stirring box (11), the inner wall of the stirring box (11) is rotatably connected with a stirring shaft (12), the outer wall of the stirring shaft (12) is fixedly connected with a stirring blade (13), the outer wall of the side of the stirring box (11) is fixedly connected with a base plate (15), the outer wall of the top of the base plate (15) is fixedly connected with an adjusting frame (16), the inner wall of the adjusting frame (16) is rotatably connected with a rotating shaft (17), the outer wall of the rotating shaft (17) is fixedly connected with an adjusting gear (18), the outer wall of the side, away from the adjusting gear (18), of the rotating shaft (17) is rotatably connected with a speed reducer (19), and the outer wall of the speed reducer (19) is rotatably connected with a motor (191).

2. The sludge mixing apparatus for a coal-fired power plant according to claim 1, characterized by: The stirring blades (13) are arrayed along the outer wall of the stirring shaft (12), the stirring blades (13) are arranged in the interior of the stirring box (11), the stirring gear (14) and the adjusting gear (18) are arranged in the interior of the adjusting frame (16), the outer wall of the stirring shaft (12) is rotatably connected with the inner wall of the adjusting frame (16), and the outer wall of the stirring gear (14) is engaged with the outer wall of the adjusting gear (18).

3. The sludge mixing apparatus for a coal-fired power plant according to claim 1, characterized by: The outer wall of the speed reducer (19) is fixedly connected with the outer wall of the adjusting frame (16), and the outer wall of the bottom of the motor (191) is fixedly connected with the outer wall of the top of the base plate (15).

4. The sludge mixing apparatus for a coal-fired power plant according to claim 1, characterized by: The discharging device (2) comprises a cover plate (21), the inner wall of the cover plate (21) is fixedly connected with a coal material feeding hopper (22) and a sludge discharging pipe (23), the inner wall of the side of the sludge discharging pipe (23) is fixedly connected with a feeding pipe (24), the inner wall of the top of the sludge discharging pipe (23) is slidably connected with a pressing rod (25), the outer wall of the top of the pressing rod (25) is fixedly connected with a pressing plate (26), the outer wall of the pressing plate (26) is fixedly connected with a compression spring (27), the outer wall of the bottom of the pressing rod (25) is fixedly connected with a scraper (28), and the inner wall of the cover plate (21) is rotatably connected with an opening and closing plate (29).

5. A sludge mixing apparatus for use in a coal-fired power plant according to claim 4, characterized in that: The outer wall, away from the pressing plate (26), of the compression spring (27) is fixedly connected with the outer wall of the top of the sludge discharging pipe (23), and the outer wall of the scraper (28) is slidably connected with the inner wall of the sludge discharging pipe (23).

6. The sludge mixing apparatus for a coal-fired power plant according to claim 1, characterized by: The outer wall of the top of the stirring box (11) is fixedly connected with the outer wall of the bottom of the cover plate (21), and the outer wall of the top of the stirring box (11) is in contact with the outer wall of the bottom of the opening and closing plate (29).

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