Coal feeding port of circulating fluidized bed boiler

Abstract

The utility model discloses a circulating fluidized bed boiler coal feeding port which comprises a coal feeding frame and further comprises a supporting frame, a sealing door plate, a supporting spring and a positioning mechanism, the supporting frame is a rectangular frame and fixedly arranged on the coal feeding frame, the sealing door plate is arranged in the supporting frame in a sliding mode, and the supporting spring is arranged on the supporting frame. A heat insulation plate is fixedly arranged on the side wall of the side, close to the coal feeding frame, of the sealing door plate, a plurality of supporting springs are fixedly arranged between the sealing door plate and the inner top wall of the supporting frame, and the positioning mechanism is arranged on the sealing door plate and used for positioning the sealing door plate and the supporting frame. The coal feeding port of the circulating fluidized bed boiler solves the problem that a sealing door on a coal feeding port in the prior art is prone to blocking the coal feeding port in the coal adding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler coal feed port technical field, concretely relates to a circulating fluidized bed boiler coal feed port. BACKGROUND

[0002] The circulating fluidized bed boiler coal feed port is a structural component for feeding fuel (such as coal, biomass, etc.) into the furnace in the circulating fluidized bed boiler, which plays a key role in fuel supply in the operation of the whole boiler.

[0003] The circulating fluidized bed boiler coal feed port in the prior art is generally provided with a sealing door to avoid heat loss, the sealing door is opened in the process of adding coal, and then the sealing door is closed after the addition of coal is completed; a lock catch device is also installed to lock the sealing door when the sealing door is closed, so as to ensure the sealing effect; however, in the process of adding coal, the sealing door is easily touched to block the coal feed port, thereby affecting the coal feeding efficiency of the coal feed port. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the deficiencies in the prior art, the utility model provides a circulating fluidized bed boiler coal feed port to solve the problem that the sealing door on the coal feed port in the prior art is easily blocked in the process of adding coal.

[0006] (II) technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a circulating fluidized bed boiler coal feed port, which comprises a coal inlet frame, and further comprises a supporting frame, a sealing door plate, a supporting spring and a positioning mechanism, the supporting frame is arranged as a rectangular frame, the supporting frame is fixedly arranged on the coal inlet frame, the sealing door plate is slidingly arranged in the supporting frame, a heat insulation plate is fixedly arranged on the side wall of the side of the sealing door plate close to the coal inlet frame, a plurality of supporting springs are fixedly arranged between the sealing door plate and the inner top wall of the supporting frame, and the positioning mechanism is arranged on the sealing door plate and used for positioning between the sealing door plate and the supporting frame.

[0008] Preferably, the positioning mechanism comprises:

[0009] A first positioning opening is arranged on the inner bottom wall of the supporting frame;

[0010] A positioning seat is fixedly arranged on the sealing door plate, the positioning seat is matched with the shape of the first positioning opening, and a second positioning opening is arranged on the positioning seat;

[0011] Positioning blocks are arranged on both sides of the second positioning opening, and two positioning plates are hingedly arranged between each positioning block and the inner top wall of the second positioning opening;

[0012] An angle adjusting mechanism is arranged in the positioning seat and used for adjusting the angle of the positioning plates.

[0013] Further, the angle adjusting mechanism comprises:

[0014] Adjusting grooves are arranged on the inner bottom wall of the second positioning opening, and adjusting blocks are slidably arranged in the adjusting grooves;

[0015] An adjusting rod is hingedly arranged between the adjusting block and the adjacent positioning plate.

[0016] A relative moving mechanism is arranged on the positioning seat and used for driving the two adjusting blocks to move relative to each other.

[0017] Further, the relative moving mechanism comprises:

[0018] A first cavity is arranged between the two adjusting grooves, and the first cavity is between the adjusting grooves;

[0019] An adjusting column is penetratingly and rotatably arranged on the inner bottom wall of the first cavity, and an adjusting disc is fixedly arranged at one end of the adjusting column extending into the first cavity; two rotating shafts are rotatably arranged at eccentric positions of the adjusting disc, and a connecting rod is hingedly arranged between the rotating shaft and the adjacent adjusting block.

[0020] A hand wheel is rotatably arranged on the positioning seat, and the hand wheel is fixedly connected with the adjusting column.

[0021] Further, a torsion spring is sleeved on the adjusting column, and the two ends of the torsion spring are fixedly connected with the inner bottom wall of the first cavity and the adjusting disc, respectively.

[0022] On the basis of the above-mentioned scheme, a handle is fixedly arranged on the sealing door plate.

[0023] (Three) beneficial effects

[0024] Compared with the prior art, the circulating fluidized bed boiler coal feeding port provided by the present application has the following beneficial effects:

[0025] 1. In the present application, the supporting spring is arranged to pull the sealing door plate under the elastic force of the supporting spring, and the supporting spring can also limit the sealing door plate, so that the sealing door plate does not block the coal inlet frame during the coal adding process.

[0026] 2. The utility model discloses a positioning mechanism is set up, can pull the sealing door board after the coal is added, thereby to the coal frame is shielded, can be adjusted to the position of positioning block through the rotation of hand wheel simultaneously, and then the extrusion of support frame to sealing door board is positioned through positioning block to the coal frame, thereby reduce the loss of heat;

[0027] 3. The utility model discloses an angle adjusting mechanism is set up, and the rotation of hand wheel can drive adjusting column and adjusting disc rotate, can push two adjusting blocks to move relatively through pivot shaft and connecting rod in the process of adjusting disc rotation, and can push the angle adjustment of positioning plate through adjusting rod in the process of adjusting block movement, and the relative movement of positioning block is driven through the angle adjustment of positioning plate and extrudes support frame simultaneously, thereby being convenient for the positioning between positioning seat and support frame.

[0028] 4. The utility model discloses a support frame, sealing door board, support spring and positioning mechanism are set up, and it is convenient for the elastic force of support spring under the action in the process of adding coal to make sealing door board remove from coal frame, and then can realize the positioning between sealing door board and support frame through the movement of positioning block after the coal block is added, thereby solve the problem that the sealing door of coal gate in the prior art is easy to shield coal gate in the process of adding coal. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is structure schematic drawing of the application;

[0030] Figure 2 It is structure schematic drawing of the coal frame of the application;

[0031] Figure 3 It is another view sectional structure schematic drawing of the coal frame of the application;

[0032] Figure 4 It is sectional structure schematic drawing of the positioning mechanism of the application;

[0033] Figure 5 It is the application Figure 4 It is the local amplification structure schematic drawing of A of the application.

[0034] In the drawing: 1, coal inlet frame;2, support frame;3, sealing door board;4, support spring;5, first positioning mouth;6, positioning seat;7, second positioning mouth;8, positioning block;9, positioning plate;10, adjusting groove;11, adjusting block;12, adjusting rod;13, adjusting disc;14, connecting rod;15, hand wheel;16, torsion spring;17, handle. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0036] Please refer to Figures 1-5 The present application discloses a circulating fluidized bed boiler coal feeding port, which comprises a coal inlet frame 1, a supporting frame 2, a sealing door plate 3, supporting springs 4 and a positioning mechanism. The supporting frame 2 is arranged as a rectangular frame and is fixedly arranged on the coal inlet frame 1. The sealing door plate 3 is slidingly arranged in the supporting frame 2. A heat insulation plate is fixedly arranged on the side wall of the sealing door plate 3 close to the coal inlet frame 1. A plurality of supporting springs 4 are fixedly arranged between the sealing door plate 3 and the inner top wall of the supporting frame 2. The positioning mechanism is arranged on the sealing door plate 3 and is used for positioning between the sealing door plate 3 and the supporting frame 2. Specifically, the sealing door plate 3 can be pulled by the elastic force of the supporting springs 4, and the sealing door plate 3 can be limited by the supporting springs 4, so that the sealing door plate 3 does not shield the coal inlet frame 1 during coal feeding.

[0037] Please refer to Figures 2-5 The positioning mechanism comprises a first positioning opening 5, a positioning seat 6, positioning blocks 8 and an angle adjusting mechanism. The first positioning opening 5 is arranged on the inner bottom wall of the supporting frame 2. The positioning seat 6 is fixedly arranged on the sealing door plate 3 and is matched with the first positioning opening 5 in shape. A second positioning opening 7 is arranged on the positioning seat 6. The positioning blocks 8 are arranged on the two sides of the second positioning opening 7. Two positioning plates 9 are hingedly arranged between each positioning block 8 and the inner top wall of the second positioning opening 7. The angle adjusting mechanism is arranged in the positioning seat 6 and is used for adjusting the angle of the positioning plate 9. After the coal feeding is completed, the sealing door plate 3 can be pulled to shield the coal feeding frame. The position of the positioning block 8 can be adjusted by the working of the angle adjusting mechanism, and then the sealing door plate 3 is positioned by the extrusion of the supporting frame by the positioning block 8, so that the heat loss is reduced.

[0038] Please refer to Figure 4 The present application discloses a circulating fluidized bed boiler coal feeding port, which comprises a coal inlet frame 1, a supporting frame 2, a sealing door plate 3, supporting springs 4 and a positioning mechanism. The supporting frame 2 is arranged as a rectangular frame and is fixedly arranged on the coal inlet frame 1. The sealing door plate 3 is slidingly arranged in the supporting frame 2. A heat insulation plate is fixedly arranged on the side wall of the sealing door plate 3 close to the coal inlet frame 1. A plurality of supporting springs 4 are fixedly arranged between the sealing door plate 3 and the inner top wall of the supporting frame 2. The positioning mechanism is arranged on the sealing door plate 3 and is used for positioning between the sealing door plate 3 and the supporting frame 2. Specifically, the sealing door plate 3 can be pulled by the elastic force of the supporting springs 4, and the sealing door plate 3 can be limited by the supporting springs 4, so that the sealing door plate 3 does not shield the coal inlet frame 1 during coal feeding. Figure 5The angle adjusting mechanism comprises adjusting grooves 10, an adjusting rod 12 and a relative moving mechanism. Two adjusting grooves 10 are formed in the inner bottom wall of the second positioning opening 7. An adjusting block 11 is slidably arranged in the adjusting groove 10. The adjusting rod 12 is hingedly arranged between the adjusting block 11 and the adjacent positioning plate 9. The relative moving mechanism is arranged on the positioning seat 6 and is used to drive the two adjusting blocks 11 to move relative to each other. The relative moving mechanism comprises a first cavity, an adjusting column and a hand wheel 15. The first cavity is formed between the two adjusting grooves 10. The adjusting column is penetratingly and rotatably arranged on the inner bottom wall of the first cavity. The adjusting column extends into the first cavity and is fixedly provided with an adjusting disc 13 at one end. Two rotating shafts are rotatably arranged at the eccentric position of the adjusting disc 13. A connecting rod 14 is hingedly arranged between the rotating shaft and the adjacent adjusting block 11. The hand wheel 15 is rotatably arranged on the positioning seat 6 and is fixedly connected with the adjusting column. A torsion spring 16 is sleeved on the adjusting column. The two ends of the torsion spring 16 are fixedly connected with the inner bottom wall of the first cavity and the adjusting disc 13, respectively. A handle 17 is fixedly arranged on the sealing door plate 3. The rotation of the hand wheel 15 can drive the adjusting column and the adjusting disc 13 to rotate. In the process of the rotation of the adjusting disc 13, the two adjusting blocks 11 can be pushed to move relative to each other through the rotating shaft and the connecting rod 14. In the process of the movement of the adjusting block 11, the positioning plate 9 can be pushed to adjust the angle through the adjusting rod 12. At the same time, the positioning block 8 is driven to move and is pressed against the supporting frame through the angle adjustment of the positioning plate 9, so as to facilitate the positioning between the positioning seat 6 and the supporting frame.

[0039] In addition, it should be noted that the sealing door plate 3 is provided with a sliding groove in the side wall. The supporting frame is provided with a sliding rod on the opposite two side walls. The sliding rod extends into the sliding groove and is slidably connected with the side wall of the sliding groove. The inner bottom wall of the supporting frame is provided with a chamfer relative to the two ends of the sealing door plate 3.

[0040] The working principle is that, in use, the sealing door plate 3 can be pulled by the elastic force of the supporting spring 4, and the sealing door plate 3 can be limited by the supporting spring 4, so that the sealing door plate 3 does not block the coal inlet frame 1 during the coal adding process; after the coal adding is completed, the operator rotates the hand wheel 15, the rotation of the hand wheel 15 can drive the adjusting column and the adjusting disc 13 to rotate, in the process of the rotation of the adjusting disc 13, the two adjusting blocks 11 can be pushed to move relatively by the rotating shaft and the connecting rod 14, in the process of the movement of the adjusting block 11, the positioning plate 9 can be pushed to adjust the angle by the adjusting rod 12, at the same time, the positioning block 8 is driven to move and shrink into the second positioning opening 7 by the angle adjustment of the positioning plate 9, then the operator pulls the sealing door plate 3 to make the positioning seat 6 penetrate through the first positioning opening 5, then the operator releases the hand wheel 15, so that the driving column is reset under the action of the torsional spring 16, so that the positioning block 8 extends out of the first positioning opening 5, at this time, the position limitation of the sealing door plate 3 and the positioning seat 6 can be realized by the cooperation of the positioning block 8 and the side wall of the supporting frame, so that the heat loss is reduced.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A coal feed inlet for a circulating fluidized bed boiler, comprising a coal inlet frame (1), characterized in that, Also include: Support frame (2), the support frame (2) is arranged as a rectangular frame, the support frame (2) is fixedly arranged on the coal inlet frame (1); Sealing door plate (3), the sealing door plate (3) is slidably arranged in the support frame (2), and the sealing door plate (3) is fixedly arranged with a heat insulation plate on the side wall near the side of the coal inlet frame (1); Support spring (4), a plurality of support springs (4) are fixedly arranged between the sealing door plate (3) and the inner top wall of the support frame (2); Positioning mechanism, the positioning mechanism is arranged on the sealing door plate (3), and is used for positioning between the sealing door plate (3) and the support frame (2).

2. A coal feed inlet for a circulating fluidized bed boiler according to claim 1, characterized in that The positioning mechanism comprises: First positioning port (5), the first positioning port (5) is opened on the inner bottom wall of the support frame (2); Positioning seat (6), the positioning seat (6) is fixedly arranged on the sealing door plate (3), the positioning seat (6) is matched with the shape of the first positioning port (5), and the second positioning port (7) is opened on the positioning seat (6); Positioning block (8), the second positioning port (7) is provided with the positioning block (8) on both sides, and two positioning plates (9) are hingedly arranged between each positioning block (8) and the inner top wall of the second positioning port (7); Angle adjusting mechanism, the angle adjusting mechanism is arranged in the positioning seat (6), and is used for adjusting the angle of the positioning plate (9).

3. A coal feed inlet for a circulating fluidized bed boiler according to claim 2, characterized in that The angle adjusting mechanism comprises: Adjusting groove (10), two adjusting grooves (10) are opened on the inner bottom wall of the second positioning port (7), and adjusting blocks (11) are slidably arranged in the adjusting grooves (10); Adjusting rod (12), the adjusting rod (12) is hingedly arranged between the adjusting block (11) and the adjacent positioning plate (9); Relative movement mechanism, the relative movement mechanism is arranged on the positioning seat (6), and is used for driving the relative movement of the two adjusting blocks (11).

4. A coal feed inlet for a circulating fluidized bed boiler according to claim 3, characterized in that The relative movement mechanism comprises: First cavity, the first cavity is opened between the two adjusting grooves (10), and the first cavity is between the adjusting grooves (10); Adjusting column, the adjusting column is rotatably arranged on the inner bottom wall of the first cavity, and the adjusting column extends into the first cavity and is fixedly provided with an adjusting disc (13) at one end, the eccentric position of the adjusting disc (13) is rotatably provided with two rotating shafts, and the rotating shafts are hingedly provided with connecting rods (14) between the adjacent adjusting blocks (11); Hand wheel (15), the hand wheel (15) is rotatably arranged on the positioning seat (6), and the hand wheel (15) is fixedly connected with the adjusting column.

5. A coal feed inlet for a circulating fluidized bed boiler according to claim 4, characterized in that The adjusting column is provided with a torsional spring (16), and the torsional spring (16) is fixedly connected with the inner bottom wall of the first cavity and the adjusting disc (13) at both ends.

6. A coal feed inlet for a circulating fluidized bed boiler according to claim 5, characterized in that The sealing door plate (3) is fixedly provided with a handle (17).

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