Feeding and conveying device of circulating fluidized bed boiler

Abstract

The utility model discloses a feeding and conveying device of a circulating fluidized bed boiler, and particularly relates to the field of feeding devices of circulating fluidized bed boilers, which comprises a supporting framework, a blanking groove is fixedly arranged at the top of the supporting framework, a horizontal feeding mechanism is arranged at the bottom of the blanking groove, and the horizontal feeding mechanism comprises a first feeding pipe arranged at the bottom of the blanking groove. The first feeding pipe is arranged in a horizontal state, the first feeding pipe is fixedly mounted at the top of the supporting framework, and one side of the first feeding pipe is communicated with an articulated chute; according to the utility model, the horizontal feeding mechanism is arranged, so that the speed reducer is in flexible connection with the screw through the structures of the first coupler and the second coupler, and the damage caused by larger torque of the speed reducer is avoided; the situation that the spiral structure directly enters the hearth after being broken in the conveying pipe and is difficult to process is avoided, and meanwhile the feeding speed is increased by arranging the material stirring mechanism so that the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating fluidized bed boiler feeding devices, and more specifically, to a circulating fluidized bed boiler feeding and conveying device. Background Art

[0002] Circulating fluidized bed boilers use circulating fluidized bed combustion technology, which has the advantages of high efficiency, cleanliness, low pollution, wide fuel use, high ash utilization rate, etc. Therefore, circulating fluidized bed boilers are widely used in power station boilers and waste incineration fields. Circulating fluidized bed boilers include a furnace, an air distribution plate is arranged at the bottom of the furnace, a fluidized bed is arranged above the air distribution plate, and a wind chamber is arranged below the air distribution plate;

[0003] The traditional circulating fluidized bed boiler feeding and conveying structure adopts flange connection through the reducer and the spiral connection. The torque of the reducer is large, which causes the reducer connecting screws to loosen, the reducer to shake greatly, and the reducer is frequently damaged. In addition, the spiral blades are long, the spirals frequently break, and the spirals tilt downward. If the breakage is not discovered in time, it is easy to enter the furnace and is difficult to handle. In addition, the traditional feeding and conveying structure is slow in the process of feeding materials into the boiler, thereby affecting the working efficiency of the circulating fluidized bed boiler.

[0004] In view of the above technical defects, a solution is now provided. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a circulating fluidized bed boiler feeding and conveying device, which is achieved by setting a horizontal feeding mechanism, and then through the structure of a first coupling and a second coupling, the reducer and the spiral are connected in a flexible manner, thereby avoiding damage to the reducer due to a large torque, and by flattening the spiral used for feeding, it is avoided that the spiral breaks in the conveying pipe and directly enters the furnace, which is difficult to handle. At the same time, the feeding speed is increased by setting a feeding mechanism to improve work efficiency, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulating fluidized bed boiler feeding and conveying device, comprising a support frame, a feed chute is fixedly mounted on the top of the support frame, and a horizontal feeding mechanism is arranged at the bottom of the feed chute;

[0007] The horizontal feeding mechanism includes a first feeding pipe arranged at the bottom of the lower feeding trough, the first feeding pipe is arranged in a horizontal state, the first feeding pipe is fixedly installed on the top of the supporting frame, one side of the first feeding pipe is connected to a slide pipe, the bottom of the slide pipe is connected to a second feeding pipe, the second feeding pipe is arranged in a horizontal state, one side of the second feeding pipe is connected to a discharge trough, and the discharge trough is arranged inclined downward.

[0008] In a preferred embodiment, feeding spiral blades are provided inside the first feeding tube and the second feeding tube, and the feeding spiral blades are arranged in a horizontal state. The feeding spiral blades are in contact with the inner walls of the first feeding tube and the second feeding tube, and a connecting shaft is fixedly installed on one side of the feeding spiral blade. The connecting shaft passes through the outer walls of the first feeding tube and the second feeding tube, and the connecting shaft is rotatably installed on the top of the supporting frame.

[0009] In a preferred embodiment, a first coupling is fixedly installed on the outer wall of the connecting shaft, a second coupling is provided on one side of the first coupling, bearing seats are sleeved on the outer walls of the first coupling and the second coupling, a reduction motor is provided on one side of the second coupling, and the reduction motor is fixedly installed on the top of the supporting frame.

[0010] In a preferred embodiment, a material discharging mechanism is provided on one side of the second feeding tube, and the material discharging mechanism includes a retaining block fixedly installed on one side of the feeding spiral blade, the retaining block is arranged in a vertical state, and a threaded rod is fixedly installed on one side of the retaining block, the threaded rod is arranged in a horizontal state, and the outer wall of the threaded rod is threadedly connected with a push plate, and the push plate is slidably installed on the inner wall of the second feeding tube.

[0011] In a preferred embodiment, a rotating shaft is rotatably installed at the bottom of the push plate, and a material stripping plate is fixedly installed at the bottom of the rotating shaft. The material stripping plate and the inner wall of the second feeding tube are in contact with each other. A limit plate is provided on one side of the material stripping plate, and the limit plate is fixedly installed on the outer wall of the push plate. The bottom of the limit plate and the outer wall of the material stripping plate are in contact with each other.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model sets a horizontal feeding mechanism, and the material pieces fed through the feeding chute enter the first feeding pipe. The reduction motor on one side of the first feeding pipe drives the second coupling to make the first coupling rotate synchronously, so that the first coupling drives the connecting shaft to rotate synchronously, and the connecting shaft drives the feeding spiral blade to rotate so that the material pieces are transported to the chute and fall into the second feeding pipe, and then the feeding spiral blade is driven by the connecting shaft in the second feeding pipe to rotate so that the material pieces are transported, thereby avoiding damage caused by large torque of the reduction motor through a flexible connection method, and avoiding the feeding spiral blade from breaking in the conveying pipe and directly entering the furnace and being difficult to handle by flattening the spiral for feeding.

[0014] 2. The utility model sets a material-pickup mechanism, and the rotation of the feeding spiral blade in the second feeding tube drives the retaining block to make the threaded rod rotate synchronously, that is, the threaded rod drives the push plate to move back and forth. When the push plate moves forward in the second feeding tube, the limit plate on the outer wall of the push plate pushes the material-pickup plate vertically and simultaneously pushes the material sheet to move, thereby facilitating the orderly delivery of the material sheet. When the push plate moves backward, the material-pickup plate at the bottom of the push plate is not restricted, and the material-pickup plate is lifted up and flipped by the material sheet through the rotating shaft and moves to the rear side of the material sheet, which is convenient for pushing the material sheet to be delivered in an orderly manner next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a front view of the utility model.

[0017] Figure 3 It is a partial cross-sectional view of the utility model.

[0018] Figure 4 For this utility model Figure 3 A-section structure enlarged view.

[0019] Figure 5 For this utility model Figure 3 Enlarged view of the structure of part B.

[0020] The accompanying drawings are marked as follows: 1. Support frame; 2. Discharge chute; 3. Horizontal feeding mechanism; 31. First feeding pipe; 32. Slide pipe; 33. Second feeding pipe; 34. Discharge chute; 35. Feeding spiral blade; 36. Connecting shaft; 37. First coupling; 38. Second coupling; 39. Bearing seat; 310. Reducer motor; 4. Material shifting mechanism; 41. Retaining block; 42. Threaded rod; 43. Push plate; 44. Rotating shaft; 45. Material shifting plate; 46. Limiting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Refer to the instruction manual Figure 1-Figure 5 , a circulating fluidized bed boiler feed conveying device, such as Figure 1 As shown, it comprises a support frame 1, a feed chute 2 is fixedly mounted on the top of the support frame 1, and a horizontal feeding mechanism 3 is arranged at the bottom of the feed chute 2;

[0023] like Figure 2 and Figure 3 As shown, the horizontal feeding mechanism 3 includes a first feeding pipe 31 arranged at the bottom of the lower chute 2, the first feeding pipe 31 is arranged in a horizontal state, the first feeding pipe 31 is fixedly installed on the top of the supporting frame 1, one side of the first feeding pipe 31 is connected with a chute 32, the bottom of the chute 32 is connected with a second feeding pipe 33, the second feeding pipe 33 is arranged in a horizontal state, one side of the second feeding pipe 33 is connected with a discharge chute 34, the discharge chute 34 is arranged downwardly at an angle, and the original boiler furnace mouth angle is changed from 15 degrees to about 55 degrees corresponding to the discharge chute 34, the sheet fed through the lower chute 2 enters the first feeding pipe 31, enters the second feeding pipe 33 through the chute 32, and is then discharged through the discharge chute 34, three layers of broadcasting wind are arranged at the position of the discharge chute 34, and a main pipe is arranged along the width direction of the discharge chute 34 for broadcasting wind, and a DN20 branch pipe is used between the main pipe and the second feeding pipe 33 to penetrate into the discharge chute 34 to blow the material downward along the direction of the discharge chute 34.

[0024] like Figure 3 and Figure 4 As shown, a feeding spiral blade 35 is provided inside the first feeding tube 31 and the second feeding tube 33. The feeding spiral blade 35 is arranged in a horizontal state. The feeding spiral blade 35 fits with the inner wall of the first feeding tube 31 and the second feeding tube 33. A connecting shaft 36 is fixedly installed on one side of the feeding spiral blade 35. The connecting shaft 36 passes through the outer wall of the first feeding tube 31 and the second feeding tube 33. The connecting shaft 36 is rotatably installed on the top of the supporting frame 1. The feeding spiral blade 35 is driven to rotate by the connecting shaft 36 on one side of the first feeding tube 31 so that the material sheet is transported to the chute 32. The material sheet entering the second feeding tube 33 is driven to rotate by the connecting shaft 36 on one side of the second feeding tube 33 so that the material sheet is transported.

[0025] like Figure 3 and Figure 4 As shown, a first coupling 37 is fixedly installed on the outer wall of the connecting shaft 36, and a second coupling 38 is provided on one side of the first coupling 37. The outer walls of the first coupling 37 and the second coupling 38 are sleeved with a bearing seat 39. The bearing seat 39 adopts a Haversian joint design to facilitate future maintenance. A reduction motor 310 is provided on one side of the second coupling 38. The reduction motor 310 is fixedly installed on the top of the supporting frame 1, and then the reduction motor 310 drives the second coupling 38 to rotate, and the second coupling 38 drives the first coupling 37 to rotate synchronously, so that the first coupling 37 drives the connecting shaft 36 to rotate synchronously.

[0026] like Figure 3 and Figure 5As shown, a material dispensing mechanism 4 is provided on one side of the second feeding tube 33, and the material dispensing mechanism 4 includes a retaining block 41 fixedly installed on one side of the feeding spiral blade 35, and the retaining block 41 is arranged in a vertical state, and a threaded rod 42 is fixedly installed on one side of the retaining block 41, and the threaded rod 42 is arranged in a horizontal state. The outer wall of the threaded rod 42 is threadedly connected with a push plate 43, and the push plate 43 is slidably installed on the inner wall of the second feeding tube 33. The feeding spiral blade 35 in the second feeding tube 33 rotates to drive the retaining block 41 to rotate synchronously, and then the retaining block 41 drives the threaded rod 42 to rotate synchronously, that is, the threaded rod 42 drives the push plate 43 to reciprocate.

[0027] like Figure 3 and Figure 5 As shown, a rotating shaft 44 is rotatably installed at the bottom of the push plate 43, and a material stripping plate 45 is fixedly installed at the bottom of the rotating shaft 44. The material stripping plate 45 is in contact with the inner wall of the second feeding tube 33, and a limiting plate 46 is provided on one side of the material stripping plate 45. The limiting plate 46 is fixedly installed on the outer wall of the push plate 43, and the bottom of the limiting plate 46 is in contact with the outer wall of the material stripping plate 45. When the push plate 43 moves forward in the second feeding tube 33, the limiting plate 46 on the outer wall of the push plate 43 pushes the material stripping plate 45 vertically and simultaneously pushes the material to move, thereby facilitating the orderly delivery of the material. When the push plate 43 moves backward, the material stripping plate 45 at the bottom of the push plate 43 is not restricted, and the material stripping plate 45 is lifted up and flipped by the material through the rotating shaft 44 and moves to the rear side of the material, which is convenient for pushing the material to be delivered in an orderly manner next time.

[0028] The working process and principle of the utility model are as follows:

[0029] The sheet fed through the discharge chute 2 enters the first feeding pipe 31, and the reduction motor 310 on one side of the first feeding pipe 31 drives the second coupling 38 to rotate, and the second coupling 38 drives the first coupling 37 to rotate synchronously, so that the first coupling 37 drives the connecting shaft 36 to rotate synchronously, and the connecting shaft 36 drives the feeding spiral blade 35 to rotate so that the sheet is transported to the chute 32 and falls into the second feeding pipe 33, and then the feeding spiral blade 35 is driven to rotate by the connecting shaft 36 in the second feeding pipe 33 so that the sheet is transported, thereby avoiding damage caused by large torque of the reduction motor 310 through a flexible connection method, and avoiding the feeding spiral blade 35 from breaking in the conveying pipe and directly entering the furnace and being difficult to handle by flattening the spiral for feeding;

[0030] At the same time, the feeding spiral blade 35 in the second feeding tube 33 drives the retaining block 41 to rotate synchronously, and then the retaining block 41 drives the threaded rod 42 to rotate synchronously, that is, the threaded rod 42 drives the push plate 43 to move back and forth. When the push plate 43 moves forward in the second feeding tube 33, the limit plate 46 on the outer wall of the push plate 43 pushes the material plate 45 vertically and synchronously pushes the material sheet to move, thereby facilitating the orderly delivery of the material sheet. When the push plate 43 moves backward, the material plate 45 at the bottom of the push plate 43 is not restricted, and the rotating shaft 44 makes the material plate 45 be lifted up and flipped by the material sheet and moved to the rear side of the material sheet, which is convenient for pushing the material sheet to be delivered in an orderly manner next time.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A circulating fluidized bed boiler feeding and conveying device, comprising a supporting frame (1), a feeding chute (2) being fixedly mounted on the top of the supporting frame (1), characterized in that: A horizontal feeding mechanism (3) is provided at the bottom of the feed chute (2); The horizontal feeding mechanism (3) comprises a first feeding pipe (31) arranged at the bottom of the lower feeding chute (2), the first feeding pipe (31) being arranged in a horizontal state, the first feeding pipe (31) being fixedly mounted on the top of the supporting frame (1), one side of the first feeding pipe (31) being connected to a slide pipe (32), the bottom of the slide pipe (32) being connected to a second feeding pipe (33), the second feeding pipe (33) being arranged in a horizontal state, one side of the second feeding pipe (33) being connected to a discharge chute (34), the discharge chute (34) being arranged in an inclined downward direction; The first feeding tube (31) and the second feeding tube (33) are provided with feeding spiral blades (35) inside, the feeding spiral blades (35) are arranged in a horizontal state, the feeding spiral blades (35) and the inner walls of the first feeding tube (31) and the second feeding tube (33) are mutually fitted, and a connecting shaft (36) is fixedly installed on one side of the feeding spiral blade (35), the connecting shaft (36) passes through the outer walls of the first feeding tube (31) and the second feeding tube (33), and the connecting shaft (36) is rotatably installed on the top of the supporting frame (1); A first coupling (37) is fixedly mounted on the outer wall of the connecting shaft (36); a second coupling (38) is disposed on one side of the first coupling (37); a bearing seat (39) is sleeved on the outer walls of the first coupling (37) and the second coupling (38); a reduction motor (310) is disposed on one side of the second coupling (38); and the reduction motor (310) is fixedly mounted on the top of the support frame (1).

2. The circulating fluidized bed boiler feeding and conveying device according to claim 1, characterized in that: A material shifting mechanism (4) is provided on one side of the second feeding tube (33), and the material shifting mechanism (4) comprises a retaining block (41) fixedly mounted on one side of the feeding spiral blade (35), and the retaining block (41) is arranged in a vertical state, and a threaded rod (42) is fixedly mounted on one side of the retaining block (41), and the threaded rod (42) is arranged in a horizontal state, and the outer wall of the threaded rod (42) is threadedly connected with a push plate (43), and the push plate (43) is slidably mounted on the inner wall of the second feeding tube (33).

3. A circulating fluidized bed boiler feeding and conveying device according to claim 2, characterized in that: A rotating shaft (44) is rotatably mounted on the bottom of the push plate (43), a material-shifting plate (45) is fixedly mounted on the bottom of the rotating shaft (44), the material-shifting plate (45) and the inner wall of the second feeding tube (33) are mutually fitted, a limiting plate (46) is provided on one side of the material-shifting plate (45), the limiting plate (46) is fixedly mounted on the outer wall of the push plate (43), and the bottom of the limiting plate (46) and the outer wall of the material-shifting plate (45) are mutually fitted.

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