Mixing device for coal blending combustion of thermal power plant

Abstract

The utility model discloses a mixing device for coal blending combustion of a thermal power plant, which comprises a coal raw material mixing cylinder, a lifting frame is fixedly mounted at the upper end of the outer side of the coal raw material mixing cylinder, a stirring frame is fixedly mounted at the lower end of the lifting frame, and the stirring frame is positioned in the coal raw material mixing cylinder. A supporting frame is fixedly mounted in the middle of the outer side of the coal raw material mixing barrel, and a fixing plate is fixedly mounted at the lower end of the supporting frame. According to the mixing device for coal blending combustion of the thermal power plant, the coal raw material mixing barrel and the stirring frame are matched with the lifting frame, so that the mixing device for coal blending combustion of the thermal power plant can automatically stir, mix and discharge blending combustion raw materials, and coal blending combustion of the thermal power plant is facilitated; blending combustion raw materials are conveyed into the coal raw material mixing barrel more easily, the lifting frame is responsible for lifting the stirring frame, and the stirring frame is responsible for fully stirring the blending combustion raw materials and blocking the lower end of the coal raw material mixing barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing structures for coal blending and combustion in thermal power plants, in particular to a mixing device for coal blending and combustion in thermal power plants. Background Art

[0002] The raw materials for coal blending in thermal power plants mainly include various types of coal and other combustible materials. The mixing devices and technologies used for coal blending in thermal power plants are designed to improve combustion efficiency, reduce emissions, and optimize resource utilization. Coal blending in thermal power plants is an important way to ensure the safe operation of coal-fired units and improve economic benefits and environmental performance. Coal blending technology involves the mixing and combustion of various types of coal. The key is that the moisture, calorific value, sulfur content and volatile matter of the mixed coal must adapt to the combustion requirements of the boiler.

[0003] The existing mixing device for coal blending and combustion in thermal power plants has certain disadvantages when used. In the traditional mixing device for coal blending and combustion in thermal power plants, there is only one type of stirring blade on the stirring rod, which does not stir sufficiently, making it inconvenient to transport the blending raw materials into the interior of the coal raw material mixing barrel, and the blending raw materials after stirring are not easy to be discharged from the interior of the coal raw material mixing barrel. Utility Model Content

[0004] The main purpose of the utility model is to provide a mixing device for coal blending and combustion in a thermal power plant, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A mixing device for coal blending and combustion in a thermal power plant comprises a coal raw material mixing drum, a lifting frame is fixedly mounted on the upper end of the outer side of the coal raw material mixing drum, a stirring frame is fixedly mounted on the lower end of the lifting frame, the stirring frame is located inside the coal raw material mixing drum, a supporting frame is fixedly mounted on the middle part of the outer side of the coal raw material mixing drum, and a fixing plate is fixedly mounted on the lower end of the supporting frame.

[0007] Preferably, the coal raw material mixing drum includes a mixing drum body, a feed hopper and an inner groove ring.

[0008] Preferably, the feed hopper is fixedly installed in the notch at the upper end of the mixing barrel body, and the inner groove ring is fixedly installed at the lower end of the mixing barrel body. There are three feed hoppers installed, and the feed hoppers are evenly distributed at the upper end of the mixing barrel body.

[0009] Preferably, the lifting frame includes a fixed circular frame, a sliding rod, a top plate, a movable plate, a No. 1 motor, a screw rod and a motor outer frame.

[0010] Preferably, the fixed circular frame is fixedly installed on the outside of the mixing barrel body near the upper end, the lower end of the slide rod is fixedly installed inside the fixed circular frame, the top plate is fixedly installed between the upper ends of the slide rod, the movable plate is sleeved on the middle position of the slide rod, the No. 1 motor is fixedly installed inside the top plate, the screw is fixedly installed at the lower end of the rotating shaft of the No. 1 motor, the motor outer frame is fixedly installed at the lower end of the movable plate, and the lower end of the screw passes through the threaded through hole in the center of the upper surface of the movable plate. There are six fixed circular frames, and the fixed circular frames are located between the feed hoppers. There are three slide rods.

[0011] Preferably, the stirring frame includes a No. 2 motor, a stirring long rod, a stirring cross rod, a stirring blade, a ball bearing, a bearing fixing frame and a gear sleeve.

[0012] Preferably, the No. 2 motor is fixedly mounted inside the motor outer frame, the No. 2 stirring rod is fixedly mounted on the lower end of the rotating shaft of the No. 2 motor, the stirring cross bar is fixedly mounted on the outside of the stirring rod, the stirring blade is fixedly mounted on the outside of the stirring rod near the lower end, the ball bearing is fixedly mounted on the lower end of the stirring rod, the bearing fixing frame is fixedly mounted on the outside of the ball bearing, the gear sleeve is fixedly mounted on the outside of the bearing fixing frame, and the gear sleeve is located inside the inner groove ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the utility model, by arranging the coal raw material mixing drum, the lifting frame and the stirring frame, the coal raw material mixing drum and the stirring frame cooperate with the lifting frame so that the mixing device used for coal blending and combustion in the thermal power plant can automatically stir, mix and discharge the blending and combustion raw materials, which is beneficial to the coal blending and combustion in the thermal power plant. It is easier to transport the blending and combustion raw materials into the coal raw material mixing drum. The lifting frame is responsible for lifting and lowering the stirring frame, and the stirring frame is responsible for fully stirring the blending and combustion raw materials and blocking the lower end of the coal raw material mixing drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a mixing device for coal blending and combustion in a thermal power plant according to the present invention;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the coal raw material mixing drum, lifting frame and stirring frame of a mixing device for coal blending and combustion in a thermal power plant according to the present invention;

[0017] Figure 3 The utility model is a mixing device for coal blending and burning in thermal power plants. Figure 2 A magnified schematic diagram of part A;

[0018] Figure 4 The utility model is a mixing device for coal blending and burning in thermal power plants. Figure 2 A magnified schematic diagram of part B;

[0019] Figure 5 The utility model is a mixing device for coal blending and burning in thermal power plants. Figure 2 Enlarged schematic diagram of part C in the middle.

[0020] In the figure: 1. Coal raw material mixing drum; 101. Mixing drum body; 102. Feed hopper; 103. Inner slot ring; 2. Lifting frame; 201. Fixed round frame; 202. Slide rod; 203. Top plate; 204. Movable plate; 205. Motor No. 1; 206. Screw; 207. Motor outer frame; 3. Stirring frame; 301. Motor No. 2; 302. Stirring long rod; 303. Stirring cross bar; 304. Stirring blade; 305. Ball bearing; 306. Bearing fixing frame; 307. Gear sleeve; 4. Support frame; 5. Fixed plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-5 As shown, a mixing device for coal blending and combustion in a thermal power plant includes a coal raw material mixing drum 1, a lifting frame 2 is fixedly installed at the upper end of the outer side of the coal raw material mixing drum 1, a stirring frame 3 is fixedly installed at the lower end of the lifting frame 2, the stirring frame 3 is located inside the coal raw material mixing drum 1, a supporting frame 4 is fixedly installed at the middle part of the outer side of the coal raw material mixing drum 1, and a fixed plate 5 is fixedly installed at the lower end of the support frame 4. The coal raw material mixing drum 1 and the stirring frame 3 cooperate with the lifting frame 2 so that the mixing device for coal blending and combustion in a thermal power plant can automatically stir, mix and discharge the blending raw materials, which is beneficial to the coal blending and combustion in the thermal power plant. It is easier to transport the blending raw materials into the coal raw material mixing drum 1, the lifting frame 2 is responsible for lifting and lowering the stirring frame 3, and the stirring frame 3 is responsible for fully stirring the blending raw materials and blocking the lower end of the coal raw material mixing drum 1.

[0023] The coal raw material mixing drum 1 includes a mixing drum body 101, a feed hopper 102 and an inner groove ring 103; the feed hopper 102 is fixedly installed in the notch at the upper end of the mixing drum body 101, and the inner groove ring 103 is fixedly installed at the lower end of the mixing drum body 101. There are three feed hoppers 102 installed, and the feed hoppers 102 are evenly distributed at the upper end of the mixing drum body 101; the lifting frame 2 includes a fixed circular frame 201, a sliding rod 202, a top plate 203, a movable plate 204, a No. 1 motor 205, a screw 206 and the motor outer frame 207; the fixed circular frame 201 is fixedly installed on the outer side of the mixing barrel body 101 near the upper end, the lower end of the slide rod 202 is fixedly installed inside the fixed circular frame 201, the top plate 203 is fixedly installed between the upper ends of the slide rod 202, the movable plate 204 is sleeved on the middle position of the slide rod 202, the No. 1 motor 205 is fixedly installed inside the top plate 203, the screw 206 is fixedly installed at the lower end of the rotating shaft of the No. 1 motor 205, and the motor outer frame 207 is fixedly installed on the movable plate The lower end of the screw 206 passes through the threaded hole in the center of the upper surface of the movable plate 204. There are six fixed circular frames 201, which are located between the feed hopper 102. There are three slide bars 202. The stirring frame 3 includes a second motor 301, a stirring long rod 302, a stirring cross bar 303, a stirring blade 304, a ball bearing 305, a bearing fixing frame 306 and a gear sleeve 307. The second motor 301 is fixedly installed inside the motor outer frame 207. The mixing rod 302 is fixedly installed on the lower end of the rotating shaft of the No. 2 motor 301, the stirring cross bar 303 is fixedly installed on the outside of the stirring rod 302, the stirring blade 304 is fixedly installed on the outside of the stirring rod 302 near the lower end, the ball bearing 305 is fixedly installed on the lower end of the stirring rod 302, the bearing fixing frame 306 is fixedly installed on the outside of the ball bearing 305, the gear sleeve 307 is fixedly installed on the outside of the bearing fixing frame 306, and the gear sleeve 307 is located inside the inner groove ring 103.

[0024] It should be noted that the present invention is a mixing device for coal blending and burning in a thermal power plant. When in use, the support frame 4 is installed on the coal blending and burning equipment in the thermal power plant by passing the bolts through the fixing plate 5. In the coal raw material mixing drum 1, the lifting frame 2 and the stirring frame 3, the conveyor belt for conveying raw materials is placed on the gap of the feed hopper 102, and the coal and other combustible materials are conveyed to the interior of the mixing drum body 101. The No. 2 motor 301 drives the stirring rod 302 to stir, and the stirring cross bar 303 and the stirring blade 304 are used to fully stir. The ball bearing 305 makes the stirring rod 302 rotate more smoothly. After the stirring is completed, the No. 1 motor 205 drives the screw 206 to The movable plate 204 is lifted and lowered along the slide bar 202, driving the stirring frame 3 to lift and lower, and the tooth sleeve 307 exits the interior of the inner groove ring 103. The mixed blending raw materials are discharged from the mixing barrel body 101 and the interior of the inner groove ring 103 along the surface of the tooth sleeve 307. The coal raw material mixing barrel 1 and the stirring frame 3 cooperate with the lifting frame 2 so that the mixing device used for coal blending in the thermal power plant can automatically stir, mix and discharge the blending raw materials, which is beneficial to the coal blending in the thermal power plant. It is easier to transport the blending raw materials into the coal raw material mixing barrel 1. The lifting frame 2 is responsible for lifting and lowering the stirring frame 3. The stirring frame 3 is responsible for fully stirring the blending raw materials and blocking the lower end of the coal raw material mixing barrel 1.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A mixing device for coal blending in a thermal power plant, characterized by: The invention comprises a coal raw material mixing drum (1), a lifting frame (2) is fixedly installed at the upper end of the outer side of the coal raw material mixing drum (1), a stirring frame (3) is fixedly installed at the lower end of the lifting frame (2), and the stirring frame (3) is located inside the coal raw material mixing drum (1), a supporting frame (4) is fixedly installed at the middle part of the outer side of the coal raw material mixing drum (1), and a fixing plate (5) is fixedly installed at the lower end of the supporting frame (4).

2. A mixing device for coal blending and combustion in a thermal power plant according to claim 1, characterized in that: The coal raw material mixing drum (1) comprises a mixing drum body (101), a feed hopper (102) and an inner groove ring (103).

3. A mixing device for coal blending and combustion in a thermal power plant according to claim 2, characterized in that: The feed hopper (102) is fixedly installed in the notch at the upper end of the mixing barrel body (101), and the inner groove ring (103) is fixedly installed at the lower end of the mixing barrel body (101). There are three feed hoppers (102) installed, and the feed hoppers (102) are evenly distributed at the upper end of the mixing barrel body (101).

4. A mixing device for coal blending and combustion in a thermal power plant according to claim 3, characterized in that: The lifting frame (2) comprises a fixed circular frame (201), a sliding rod (202), a top plate (203), a movable plate (204), a No. 1 motor (205), a screw rod (206) and a motor outer frame (207).

5. The mixing device for coal blending and combustion in a thermal power plant according to claim 4, characterized in that: The fixed circular frame (201) is fixedly mounted on the outer side of the mixing barrel body (101) near the upper end, the lower end of the slide rod (202) is fixedly mounted inside the fixed circular frame (201), the top plate (203) is fixedly mounted between the upper ends of the slide rod (202), the movable plate (204) is sleeved on the middle position of the slide rod (202), the No. 1 motor (205) is fixedly mounted on the inside of the top plate (203), the screw rod (206) is fixedly mounted on the lower end of the rotating shaft of the No. 1 motor (205), the motor outer frame (207) is fixedly mounted on the lower end of the movable plate (204), the lower end of the screw rod (206) passes through the threaded through hole in the center of the upper surface of the movable plate (204), the number of the fixed circular frames (201) is six, the fixed circular frames (201) are located between the feed hoppers (102), and the number of the slide rods (202) is three.

6. A mixing device for coal blending and combustion in a thermal power plant according to claim 5, characterized in that: The stirring frame (3) comprises a second motor (301), a long stirring rod (302), a stirring crossbar (303), a stirring blade (304), a ball bearing (305), a bearing fixing frame (306) and a toothed sleeve (307).

7. A mixing device for coal blending and combustion in a thermal power plant according to claim 6, characterized in that: The second motor (301) is fixedly mounted inside the motor outer frame (207), the stirring rod (302) is fixedly mounted on the lower end of the rotating shaft of the second motor (301), the stirring cross bar (303) is fixedly mounted on the outside of the stirring rod (302), the stirring blade (304) is fixedly mounted on the outside of the stirring rod (302) near the lower end, the ball bearing (305) is fixedly mounted on the lower end of the stirring rod (302), the bearing fixing frame (306) is fixedly mounted on the outside of the ball bearing (305), the tooth sleeve (307) is fixedly mounted on the outside of the bearing fixing frame (306), and the tooth sleeve (307) is located inside the inner groove ring (103).

Images