A boiler fuel supply

Abstract

The utility model relates to a boiler field relates to a boiler fuel supply device, the utility model discloses a furnace body, feed hopper, roll -crushing subassembly, combustion support plate and air sending subassembly, one side of furnace body is equipped with feed hopper, and the discharge gate of feed hopper is connected with the furnace body feed channel of furnace body, roll -crushing subassembly includes two groups of roll -crushing roller and speed reducer no.

Description

Technical Field

[0001] This utility model relates to the field of boilers, and specifically to a boiler fuel supply device. Background Technology

[0002] Traditional boilers often use large, untreated coal pieces directly fed into the furnace. Due to the large size and small surface area of ​​the coal, the contact area with the high-temperature flame and oxygen is limited, easily leading to a situation where "the outer layer burns completely, but the inner layer remains unburned." This localized combustion delay not only results in insufficient thermal energy utilization but also produces a large amount of unburned coal ash, wasting energy and increasing solid waste treatment costs. Utility Model Content

[0003] This invention provides a boiler fuel supply device to address the problems of existing technologies.

[0004] The objective of this utility model can be achieved through the following technical solution: A boiler fuel supply device includes: a furnace body, a feeding hopper, a crushing assembly, a combustion support plate, and an air supply assembly; the feeding hopper is provided on one side of the furnace body, and the discharge port of the feeding hopper is connected to the furnace body feeding channel; the crushing assembly includes two sets of crushing rollers symmetrically arranged in the feeding hopper and a reduction motor, the two sets of crushing rollers are rotatably installed in the feeding port of the feeding hopper, the reduction motor is fixed on the outside of the feeding hopper and is connected to the two sets of crushing rollers through a transmission gear set; the combustion support plate is horizontally arranged inside the furnace body and located below the furnace body feeding channel, and several through holes are opened on the combustion support plate; the air supply assembly includes an air inlet pipe and a fan, one end of the air inlet pipe is connected to the air inlet hole on the lower side wall of the furnace body, and the other end is connected to the fan, and a flue pipe is provided at the top of the furnace body.

[0005] In a further improvement, the feeding hopper includes a vertical feeding channel and a horizontal feeding channel. The upper end of the vertical feeding channel is connected to the feeding port, and the lower end of the vertical feeding channel is connected to the horizontal feeding channel. The left side of the discharge port of the horizontal feeding channel is connected to the furnace body feeding channel. A second reduction motor is provided on the right side of the horizontal feeding channel. The output end of the second reduction motor is connected to an output shaft located inside the horizontal feeding channel, and a horizontal auger is provided on the output shaft.

[0006] In a further improvement, the two sets of crushing rollers are arranged in an alternating pattern.

[0007] A further improvement is that the discharge port has a conical cross-section.

[0008] Compared with the prior art, the beneficial effects of this utility model boiler fuel supply device are as follows: Coal lumps enter through the feed hopper, are crushed into smaller pieces by the crushing assembly, and fall through the furnace body's feed channel to the combustion support plate. A blower supplies air to the lower part of the furnace body through the air inlet pipe. The air permeates upwards through the through-holes, contacting the crushed coal lumps, which then burn efficiently in the presence of sufficient oxygen. After the crushing assembly breaks down large coal lumps, they can quickly come into contact with the high-temperature flames and oxygen inside the furnace, avoiding the problem of the outer layer of large coal lumps burning while the inner layer remains unburned. Simultaneously, forced airflow through the through-holes reaches directly to the bottom of the coal lumps, significantly reducing the amount of unburned coal residue. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a top view of the structure of this utility model. Figure 3 This is a schematic diagram of the internal structure of the present invention. In the diagram, 1-furnace body, 11-furnace body feeding channel, 12-air inlet, 13-exhaust pipe, 2-feed hopper, 21-feed inlet, 22-horizontal feeding channel, 23-vertical feeding channel, 24-second geared motor, 25-horizontal auger, 3-crushing roller, 4-first geared motor, 5-transmission gear set, 6-combustion support plate, 7-through hole, 9-air inlet pipe, 10-fan. Detailed Implementation

[0010] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0011] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0012] Example 1 A boiler fuel supply device includes a furnace body 1, a feed hopper 2, a crushing assembly, a combustion support plate 6, and an air supply assembly. The feed hopper 2 is located on one side of the furnace body 1, and its outlet is connected to the furnace body feed channel 11 of the furnace body 1. The crushing assembly includes two sets of crushing rollers 3 symmetrically arranged within the feed hopper 2 and a reduction motor 4. The two sets of crushing rollers 3 are rotatably installed within the feed inlet 21 of the feed hopper 2. The reduction motor 4 is fixed to the outside of the feed hopper 2 and is connected to the two sets of crushing rollers 3 via a transmission gear set 5. The combustion support plate is horizontally located inside the furnace body 1 and below the furnace body feed channel 11. Several through holes 7 are provided on the combustion support plate 6. The air supply assembly includes an air inlet pipe 9 and a fan 10. One end of the air inlet pipe 9 is connected to an air inlet hole 12 on the lower side wall of the furnace body 1, and the other end is connected to the fan 10. A flue gas pipe 13 is located at the top of the furnace body 1.

[0013] like Figures 1-3 As shown, the working principle of this utility model is as follows: The geared motor drives two sets of crushing rollers to achieve "relative rotation" (i.e., one set rotates clockwise and the other counterclockwise) through a transmission gear set. When the coal block enters between the two sets of crushing rollers from the feed inlet, the relative rotation of the rollers generates a squeezing force, which breaks the large coal block into smaller pieces. The mechanical force overcomes the structural strength of the coal block, thereby reducing its volume. The blower generates negative pressure through the air inlet pipe, forcing outside air into the lower part of the furnace body; after the air enters the furnace body through the air inlet hole, it is guided by the high temperature heat generated by combustion and the through holes of the support plate, and flows upward to fully contact the crushed coal.

[0014] Coal lumps enter from the feed hopper, are crushed into small pieces by the crushing components, and fall into the combustion tray through the furnace body feed channel. The blower sends air to the lower part of the furnace body through the air inlet pipe. The air permeates upward through the through holes and comes into contact with the crushed coal lumps. The crushed coal lumps burn efficiently under the action of sufficient oxygen, and the exhaust gas produced by combustion is discharged through the flue pipe.

[0015] After the crushing component breaks down large coal pieces, the coal pieces can quickly come into contact with the high-temperature flames and oxygen inside the furnace, avoiding the problem of the outer layer of large coal pieces burning while the inner layer remains unburned. At the same time, forced air is delivered directly to the bottom of the coal piece through the through holes, significantly reducing the amount of unburned coal residue.

[0016] As a further preferred embodiment, the feeding hopper 2 includes a vertical feeding channel 23 and a horizontal feeding channel 22. The upper end of the vertical feeding channel 23 is connected to the feeding port 21, and the lower end of the vertical feeding channel 23 is connected to the horizontal feeding channel 22. The left side of the discharge port of the horizontal feeding channel 22 is connected to the furnace body feeding channel 11. A second geared motor 24 is provided on the right side of the horizontal feeding channel 22. The output end of the second geared motor 24 is connected to an output shaft located inside the horizontal feeding channel 22, and a horizontal auger 25 is provided on the output shaft.

[0017] The vertical feeding channel serves as the initial guiding section, guiding coal blocks from the feed inlet to the horizontal channel by gravity. The horizontal feeding channel is the directional conveying section, with its axis aligned with the furnace body's feeding channel to ensure precise entry of coal blocks into the furnace. This solves the problem of coal blocks easily accumulating at the furnace body's feed inlet in traditional single vertical feeding hoppers. The horizontal auger is driven by a geared motor to rotate the output shaft. As the shaft rotates, the spiral blades on the shaft cooperate with the inner wall of the horizontal channel, pushing the broken coal blocks falling into the channel from the right side (motor end) to the left side (furnace body feeding channel end), achieving forced feeding. The auger can actively control the conveying speed and quantity of coal blocks.

[0018] As a further preferred embodiment, the two sets of crushing rollers 3 are arranged in an alternating manner. The alternating arrangement eliminates the crushing blind zone of the flat rollers, ensuring that all incoming coal blocks can be crushed and crushed, and preventing some large pieces of coal from falling directly onto the combustion tray, thus further ensuring the uniformity of subsequent combustion.

[0019] As a further preferred embodiment, the feed inlet 21 has a tapered cross-section.

[0020] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A boiler fuel supply device, characterized in that: The furnace includes a furnace body, a feeding hopper, a crushing assembly, a combustion support plate, and an air supply assembly. The feeding hopper is located on one side of the furnace body, and its outlet is connected to the furnace body's feeding channel. The crushing assembly includes two sets of crushing rollers symmetrically arranged within the feeding hopper and a reduction motor. The two sets of crushing rollers are rotatably installed within the feeding inlet of the feeding hopper, and the reduction motor is fixed to the outside of the feeding hopper and is connected to the two sets of crushing rollers via a transmission gear set. The combustion support plate is horizontally positioned inside the furnace body and below the furnace body's feeding channel, and has several through holes. The air supply assembly includes an air inlet pipe and a fan. One end of the air inlet pipe is connected to an air inlet hole on the lower side wall of the furnace body, and the other end is connected to the fan. An exhaust pipe is located at the top of the furnace body.

2. The boiler fuel supply device according to claim 1, characterized in that, The feeding hopper includes a vertical feeding channel and a horizontal feeding channel. The upper end of the vertical feeding channel is connected to the feeding port, and the lower end of the vertical feeding channel is connected to the horizontal feeding channel. The left side of the discharge port of the horizontal feeding channel is connected to the furnace body feeding channel. A second reduction motor is provided on the right side of the horizontal feeding channel. The output end of the second reduction motor is connected to an output shaft located inside the horizontal feeding channel. A horizontal auger is provided on the output shaft.

3. A boiler fuel supply device according to claim 1, characterized in that, The two sets of crushing rollers are arranged alternately.

4. A boiler fuel supply device according to claim 1, characterized in that, The discharge port has a conical cross-section.

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