Anti-backfire flame-retardant protection device for boiler feed hopper

Abstract

The utility model discloses a boiler feed hopper anti-backfire flame-retardant protection device which comprises a boiler body, one end of the boiler body is provided with a feed port communicated with a combustion cavity, the outer side of the feed port is provided with a feed shell, the end, away from the boiler body, of the feed shell is provided with an end plate, and the position, close to the end plate, of the feed shell is provided with a feed port. And a frame body is arranged in the feeding shell, one end of the frame body extends into the feeding opening, and a push plate is arranged in the frame body. The feeding device is simple in structure, the feeding port can be blocked through the frame body, the tempering condition is avoided, added combustibles can be pushed towards the feeding port through the push plate and extruded so that the one-time feeding amount can be increased, when the frame body moves into a combustion chamber, the interior of the frame body can be blocked and sealed through the push plate, and the combustion efficiency is improved. And the anti-backfire effect is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler technical field, concretely relates to a kind of boiler feed hopper anti-backfire flame-retardant protection device. BACKGROUND

[0002] The fuel of biomass boiler is mainly biomass shaped particle, so that the waste gas generated by boiler hardly has sulfur dioxide, reduces the pollution of acid rain to environment.The actual dust in biomass fuel is much, these dusts are rich in a large amount of combustible material-volatile released by biomass fuel, so the design of furnace bin before boiler needs fire prevention, in the actual operation of boiler, furnace will occur deflagration or abnormal burst positive pressure, so that open flame will be backfired to bin through feeding pipe, and then detonate combustible dust in bin, cause production safety accident, cause the rapid backfiring of open flame in boiler furnace, burn the worker being operated, and then cause the burning of entire bin, seriously damage fuel conveying system. SUMMARY

[0003] The utility model provides a kind of boiler feed hopper anti-backfire flame-retardant protection device, can effectively block backfire, and increase the amount of one-time feeding, and can control feeding speed, to solve the problems presented in the above background.

[0004] The utility model is realized through the following technical schemes: a kind of boiler feed hopper anti-backfire flame-retardant protection device, including boiler body, the one end of boiler body is provided with the feed inlet being communicated with combustion chamber, the outside of feed inlet is installed with feed shell, the one end of feed shell away from boiler body is installed with end plate, feed shell is close to the place of end plate and is equipped with feeding port, the inside of feed shell is equipped with frame, one end of frame extends into feed inlet, the inside of frame is equipped with push plate.

[0005] As preferred technical scheme, the center of end plate is equipped with through-hole, the first positioning port is positioned on the upper side of through-hole, the one end of frame is opposite the first positioning port and is equipped with the second positioning port, the outside of end plate is installed with first cylinder, the piston rod of first cylinder is installed on frame through through-hole, one side of feed shell is installed with second cylinder, the first positioning port and the second positioning port are equipped with positioning plate, one end of positioning plate is installed on push plate, the other end extends to outside, and is installed with fixing frame, the piston rod of second cylinder is fixedly connected with fixing frame.

[0006] As preferred technical scheme, the height of frame is matched with the height of feed shell inner chamber, frame, feed shell and push plate are all made of metal material.

[0007] As preferred technical scheme, the outer wall of feed shell is installed with heat insulation layer.

[0008] Preferably, the width of the push plate matches the width of the inner cavity of the frame body, and the height of the push plate matches the height of the frame body.

[0009] Preferably, a high-temperature-resistant rubber layer is mounted on the inner wall surface of the first positioning opening, the second positioning opening and the through hole.

[0010] Preferably, the feeding opening is higher than the bottom surface of the combustion cavity.

[0011] The utility model discloses the beneficial effect is: the utility model discloses simple structure can be blocked by the frame body to the feeding opening, avoid the situation of backfire, and through the push plate can push the combustible material towards the feeding opening, and extrude it to increase the quantity of one time feeding, and when the frame body moves to the combustion chamber, through the push plate can intercept the inside of the frame body and seal, further ensure the backfire prevention effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

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

[0014] Figure 2 It is the structure schematic diagram of the utility model after removing the feeding shell;

[0015] Figure 3 It is the sectional view of the utility model.

[0016] Among them, 1, boiler body;2, feeding shell;3, end plate;4, feeding opening;5, frame body;6, first cylinder;7, second cylinder;8, positioning plate;9, push plate. DETAILED DESCRIPTION

[0017] The embodiments of the utility model will be described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as limiting the utility model.

[0018] All features disclosed in the specification, or steps in all disclosed methods or processes, can be combined in any manner except for mutually exclusive features and / or steps.

[0019] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a boiler feed hopper backfire prevention and flame retardant protection device, which includes a boiler body 1. One end of the boiler body 1 is provided with a feed inlet 4 that communicates with the combustion chamber. A feed shell 2 is installed on the outside of the feed inlet 4. An end plate 3 is installed on the end of the feed shell 2 away from the boiler body 1. A feeding port is provided near the end plate 3 of the feed shell 2. A frame 5 is provided inside the feed shell 2. One end of the frame 5 extends into the feed inlet 4. A push plate 9 is provided inside the frame 5.

[0021] In this embodiment, a through hole is provided at the center of the end plate 3, and a first positioning port is provided above the through hole on the end plate 3. A second positioning port is provided at one end of the frame 5 directly opposite the first positioning port. A first cylinder 6 is installed on the outer side of the end plate 3. The piston rod of the first cylinder 6 passes through the through hole and is installed on the frame 5. A second cylinder 7 is installed on one side of the feed shell 2. A positioning plate 8 is provided in the first positioning port and the second positioning port. One end of the positioning plate 8 is installed on the push plate 9, and the other end extends to the outside and is equipped with a fixing frame. The piston rod of the second cylinder 7 is fixedly connected to the fixing frame.

[0022] In this embodiment, the height of the frame 5 matches the height of the inner cavity of the feed shell 2. The frame 5, the feed shell 2, and the push plate 9 are all made of metal, which increases their service life.

[0023] In this embodiment, a heat insulation layer is installed on the outer wall of the feed shell 2. The heat insulation layer is expanded perlite, which is lightweight, has good heat insulation performance, high temperature resistance and fire resistance, thus increasing the safety during use.

[0024] In this embodiment, the width of the pusher plate 9 matches the width of the inner cavity of the frame 5, and the height of the pusher plate 9 matches the height of the frame 5, so that the pusher plate can fully push the combustibles in the feed shell into the combustion chamber.

[0025] In this embodiment, a high-temperature resistant rubber layer is installed on the inner wall surface of the first positioning port, the second positioning port, and the through hole, which increases the sealing between the positioning plate and the first positioning port and the second positioning port, and also increases the sealing between the first cylinder and the through hole.

[0026] In this embodiment, the feed inlet 4 is positioned higher than the bottom surface of the combustion chamber, so that after the frame enters the combustion chamber, the combustible material inside the frame can fall smoothly into the combustion chamber.

[0027] When feeding, the first cylinder is activated, causing the piston rod of the first cylinder to retract. The movement of the piston rod drives the frame, causing the frame to enter the feed chamber. If the feed port is sealed through one end of the frame, backfire is avoided.

[0028] After the above is completed, the combustible material is poured into the inside of the frame through the feeding port, and the second cylinder is activated to retract the piston rod of the second cylinder. The movement of the piston rod drives the positioning plate and the push plate. The push plate can push the combustible material located at the feeding port to a deeper depth and squeeze it, increasing the amount of material fed at one time.

[0029] After the material is added to a certain level, the first and second cylinders are activated simultaneously. The first cylinder pushes the frame into the combustion chamber. As the frame enters, the bottom of the frame opens, allowing the combustible material inside to fall out automatically. The second cylinder drives the positioning plate and push plate, preventing the frame from moving due to the push plate not moving. As the push plate moves, it seals the middle of the frame, preventing backfire and greatly increasing safety.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A backfire prevention and flame-retardant protection device for a boiler feed hopper, characterized in that: The boiler body (1) is provided with a feed inlet (4) communicating with the combustion chamber at one end. A feed shell (2) is installed on the outside of the feed inlet (4). An end plate (3) is installed on the end of the feed shell (2) away from the boiler body (1). A feeding port is provided near the end plate (3) of the feed shell (2). A frame (5) is provided inside the feed shell (2). One end of the frame (5) extends into the feed inlet (4). A push plate (9) is provided inside the frame (5).

2. The boiler feed hopper backfire prevention and flame retardant protection device according to claim 1, characterized in that: A through hole is provided at the center of the end plate (3). A first positioning port is provided above the through hole on the end plate (3). A second positioning port is provided at one end of the frame (5) directly opposite the first positioning port. A first cylinder (6) is installed on the outer side of the end plate (3). The piston rod of the first cylinder (6) is installed on the frame (5) through the through hole. A second cylinder (7) is installed on one side of the feed shell (2). A positioning plate (8) is provided in the first positioning port and the second positioning port. One end of the positioning plate (8) is installed on the push plate (9), and the other end extends to the outside and is fixedly connected to the fixing frame. The piston rod of the second cylinder (7) is fixedly connected to the fixing frame.

3. The boiler feed hopper backfire prevention and flame retardant protection device according to claim 1, characterized in that: The height of the frame (5) matches the height of the inner cavity of the feed shell (2). The frame (5), feed shell (2) and push plate (9) are all made of metal.

4. The boiler feed hopper backfire prevention and flame retardant protection device according to claim 1, characterized in that: A heat insulation layer is installed on the outer wall of the feed shell (2).

5. The boiler feed hopper backfire prevention and flame retardant protection device according to claim 1, characterized in that: The width of the push plate (9) matches the width of the inner cavity of the frame (5), and the height of the push plate (9) matches the height of the frame (5).

6. The boiler feed hopper backfire prevention and flame retardant protection device according to claim 2, characterized in that: A high-temperature resistant rubber layer is installed on the inner wall surface of the first positioning port, the second positioning port, and the through hole.

7. The boiler feed hopper backfire prevention and flame retardant protection device according to claim 1, characterized in that: The feed inlet (4) is set above the bottom surface of the combustion chamber.

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