Feeding device and burner

Abstract

The application discloses a feeding device and a burner. The feeding device comprises a feeding pipe and a feeding assembly. The feeding pipe has a feeding channel. The feeding assembly comprises a plurality of flaps. The plurality of flaps are arranged in the feeding channel along the length direction of the feeding pipe. The flaps have an open position and a closed position relative to the feeding pipe. In the closed position, the flaps can cut off the feeding channel. In the open position, the flaps can communicate the feeding channel. In the plurality of flaps, when one flap is in the open position, at least one flap in the rest of the plurality of flaps is in the closed position. The feeding device can ensure the sealing of the feeding channel while conveying the material, thereby improving the air locking performance of the equipment and ensuring the safe operation of the equipment.

Description

Technical Field

[0001] This invention relates to the field of burner technology, and more specifically, to a feeding device and a burner. Background Technology

[0002] Biomass materials (straw, sawdust, bagasse, rice husks, etc.) can be used as a renewable, green, and clean fuel for power generation and heating, thereby effectively improving the living environment and quality of life.

[0003] In related technologies, flap valves are often used to push biomass fuel into the burner for combustion. However, during use, flap valves with poor sealing increase the air intake in the burner and have poor air-locking function, which makes it impossible for the burner to maintain negative pressure for a long time, creating a safety hazard. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a feeding device that, in view of the defects and deficiencies of the prior art, can ensure the sealing of the feeding channel while conveying materials, thereby improving the airtightness of the equipment and ensuring the safe operation of the equipment.

[0005] An embodiment of the present invention also proposes a burner.

[0006] The feeding device of this invention includes: a feeding pipe having a feeding channel; and a feeding assembly including a plurality of flaps, the plurality of flaps being spaced apart along the length direction of the feeding pipe within the feeding channel, and the flaps having an open position and a closed position relative to the feeding pipe. In the closed position, the flaps can block the feeding channel, and in the open position, the flaps can connect the feeding channel. When one of the flaps is in the open position, at least one of the remaining flaps is in the closed position.

[0007] According to the feeding device of the present invention, the feeding pipe has a feeding channel, and the feeding assembly includes multiple flaps. The multiple flaps are spaced apart along the length of the feeding pipe in the feeding channel, and the flaps have an open position and a closed position relative to the feeding pipe. In the closed position, the flaps can block the feeding channel, and in the open position, the flaps can connect the feeding channel. When one of the multiple flaps is in the open position, at least one of the remaining flaps is in the closed position. Thus, during the material conveying process, the flap corresponding to the material flow position can be opened to ensure unobstructed feeding, and the flaps in other positions can be closed to ensure the airtightness of the equipment. That is, the feeding device of this application can ensure the airtightness of the equipment without affecting the material conveying of the equipment, improve the airtightness of the equipment, and ensure the safe operation of the equipment. At the same time, the structure of this application is simple, easy to assemble, and easy to promote.

[0008] In some embodiments, the flap is rotatably connected to the feed pipe via a rotating shaft, the rotating shaft passing radially through the feed pipe and the axis of the rotating shaft being orthogonal to the central axis of the feed pipe.

[0009] In some embodiments, the flap is an arc-shaped plate, which includes a first arc plate and a second arc plate. The protrusion direction of the first arc plate is opposite to that of the second arc plate, and both the first arc plate and the second arc plate are connected to the rotating shaft and are symmetrical about the center of the rotating shaft.

[0010] In some embodiments, the feed pipe includes a plurality of pipe segments that are detachably connected in sequence, and a plurality of flaps are disposed in a plurality of pipe segments in a corresponding manner.

[0011] In some embodiments, the outer wall of the feed pipe is provided with a plurality of reinforcing plates arranged at intervals along the length of the feed pipe, and the plurality of reinforcing plates correspond one-to-one with the plurality of flaps. In the closed position, the outer wall of the flap and the feed pipe contact position is provided with a corresponding reinforcing plate.

[0012] In some embodiments, the rotation phase difference between adjacent flaps is 90°.

[0013] In some embodiments, if there is a gap L between the edge of the flap and the inner wall of the feed tube, then the following condition is met: 0.2mm≤L≤0.4mm.

[0014] In some embodiments, the flap is provided with a cutting head on the side parallel to the axis of the rotating shaft.

[0015] In some embodiments, the cutting head is a bidirectional cutting head.

[0016] The burner of this invention includes the feeding device described in the above embodiments.

[0017] The burner according to the embodiments of the present invention, by employing the feeding device described in the above embodiments, has good sealing performance, high feeding efficiency, and high burner operation safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the feeding device according to an embodiment of the present invention.

[0019] Figure label:

[0020] Feed pipe 1, pipe section 11, reinforcing plate 12, feeding assembly 2, flip plate 21, first arc plate 211, second arc plate 212, cutting head 213, rotating shaft 22. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] like Figure 1 As shown, the feeding device of this embodiment of the invention includes a feeding pipe 1 and a feeding assembly 2.

[0023] Specifically, the feed pipe 1 has a feed channel, and the feeding assembly 2 includes multiple flaps 21. The multiple flaps 21 are spaced apart in the feed channel along the length of the feed pipe 1, and the flaps 21 have an open position and a closed position relative to the feed pipe 1. In the closed position, the flaps 21 can block the feed channel, and in the open position, the flaps 21 can connect the feed channel. When one of the multiple flaps 21 is in the open position, at least one of the remaining flaps 21 is in the closed position.

[0024] It should be noted that in certain operating conditions, the equipment needs to operate under negative pressure. For example, during burner operation, negative pressure in the furnace prevents the air inside the furnace from expanding due to heat and compressing the furnace walls, thus preventing safety accidents such as burner damage or explosion. However, fuel needs to be continuously added during burner operation, and this feeding process affects the stability of the negative pressure state inside the furnace. The feeding device of this application has multiple flaps 21 spaced along the length of the feed pipe 1. During the feeding process, the flaps 21 corresponding to the material flow position can be opened to ensure unobstructed feeding, while the flaps 21 at other positions can be closed to ensure the airtightness of the equipment. For example, as Figure 1 As shown, the feed pipe 1 can be installed vertically, and the flaps 21 are arranged at intervals up and down along the length of the feed pipe 1 (e.g., Figure 1 (As shown in the up-down direction), the material can be controlled to fall into the equipment in a stepped manner according to the setting sequence of the flaps 21. The specific process is as follows: First, the upper flap 21 is moved to the open position, and the lower flap 21 is moved to the closed position, allowing the material to fall onto the lower flap 21. Then, the upper flap 21 is moved to the closed position, and the lower flap 21 is moved to the open position, allowing the material to fall again. This process is repeated, and the material enters the equipment after passing through multiple flaps 21. It can be understood that during this process, one flap 21 is always kept in the closed position to ensure the airtightness of the equipment. As the material flows, the flaps 21 at the corresponding positions open in sequence to ensure smooth feeding.

[0025] Therefore, materials can be fed into the equipment, and the equipment can be kept airtight during the feeding process to prevent excessive external air from entering the equipment through the feeding channel.

[0026] According to the feeding device of the present invention, the feeding pipe has a feeding channel, and the feeding assembly includes multiple flaps. The multiple flaps are spaced apart along the length of the feeding pipe in the feeding channel, and the flaps have an open position and a closed position relative to the feeding pipe. In the closed position, the flaps can block the feeding channel, and in the open position, the flaps can connect the feeding channel. When one of the multiple flaps is in the open position, at least one of the remaining flaps is in the closed position. Thus, during the material conveying process, the flap corresponding to the material flow position can be opened to ensure unobstructed feeding, and the flaps in other positions can be closed to ensure the airtightness of the equipment. That is, the feeding device of this application can ensure the airtightness of the equipment without affecting the material conveying of the equipment, improve the airtightness of the equipment, and ensure the safe operation of the equipment. At the same time, the structure of this application is simple, easy to assemble, and easy to promote.

[0027] Furthermore, such as Figure 1 As shown, the flap 21 is rotatably connected to the feed pipe 1 via a rotating shaft 22. The rotating shaft 22 passes through the feed pipe 1 radially and is perpendicular to the central axis of the feed pipe 1.

[0028] It should be noted that in related technologies, the flap 21 is usually set on the side wall of the feed pipe. Due to the setting method, the rotation angle of the flap 21 is limited (0°-180°). When conveying large materials, the anti-clogging and stirring ability of the flap 21 is poor. However, the rotating shaft 22 of this application is transversely inserted into the feed pipe 1. The rotation angle of the flap 21 connected to the rotating shaft 22 is not limited (0°-360°), and the anti-clogging and stirring ability is strong.

[0029] Furthermore, such as Figure 1 As shown, the flap 21 is an arc-shaped plate, which includes a first arc plate 211 and a second arc plate 212. The protrusion direction of the first arc plate 211 is opposite to that of the second arc plate 212. Both the first arc plate 211 and the second arc plate 212 are connected to the rotating shaft 22 and are symmetrical about the center of the rotating shaft 22.

[0030] Understandably, the arc-shaped plate increases the contact area between the material and the flip plate 21 and forms a groove for temporarily storing the material. Thus, the symmetrically arranged first arc plate 211 and second arc plate 212 can take turns pushing the material to the next flip plate 21, thereby accelerating the feeding rate.

[0031] Furthermore, such as Figure 1 As shown, the feed pipe 1 includes multiple pipe sections 11 that are detachably connected in sequence, and multiple flaps 21 are arranged one-to-one in the multiple pipe sections 11.

[0032] In other words, the feed pipe 1 can be assembled from multiple detachable pipe sections 11, and each pipe section 11 is equipped with a flap 21. This not only facilitates the installation of the feed assembly on the equipment, but also allows for quick disassembly of the pipe section 11 for maintenance when the flap 21 malfunctions.

[0033] Furthermore, such as Figure 1 As shown, the outer wall of the feed pipe 1 is provided with a plurality of reinforcing plates 12 arranged at intervals along the length of the feed pipe 1. The plurality of reinforcing plates 12 correspond one-to-one with the plurality of flaps 21. In the closed position, the outer wall of the flap 21 in contact with the feed pipe 1 is provided with a corresponding reinforcing plate 12.

[0034] It should be noted that during the rotation of the flap 21, material is often clamped between the flap 21 and the feed pipe 1, which puts pressure on the wall of the feed pipe 1. Especially when the flap 21 is in the closed position, the distance between the flap 21 and the feed pipe 1 is the closest, and the pressure on the wall of the feed pipe 1 increases. At this time, the reinforcing plate 12 can prevent the wall from deforming and improve the durability of the feeding device.

[0035] Furthermore, such as Figure 1 As shown, the rotation phase difference between adjacent flaps 21 is 90°, which allows for a large material flow space between flaps 21, avoiding situations such as material jamming that could affect feeding efficiency.

[0036] Furthermore, such as Figure 1 As shown, there is a gap L between the edge of the flap 21 and the inner wall of the feed pipe 1, which satisfies the condition: 0.2mm≤L≤0.4mm.

[0037] Understandably, in the closed position, the side of the flap facing the feed pipe 1 needs to have a certain gap with the inner wall of the feed pipe 1 to ensure that the flap 21 is unobstructed during opening and closing and to avoid wear.

[0038] Furthermore, such as Figure 1 As shown, a cutting head 213 is provided on the side of the flap 21 that is parallel to the axis of the rotating shaft 22.

[0039] It should be noted that when the feeding device is conveying certain biomass fuels, the biomass fuels are of different sizes. Large-sized biomass fuels are prone to causing accidents such as jamming. Therefore, a cutting head 213 can be set on the flap 21 to crush large-sized biomass fuels, so that the fuel can be more easily fed into the burner furnace and improve combustion efficiency.

[0040] It is understandable that the cutting direction of the cutting head 213 should be consistent with the rotation direction of the rotating shaft 22. Thus, when the rotating shaft 22 drives the flap 21 to rotate, the cutting head 213 contacts the conveyed material and cuts it.

[0041] Furthermore, such as Figure 1 As shown, the cutting head 213 is a bidirectional cutting head.

[0042] It is understandable that the cutting head 213 has multiple settings, which can be unidirectional or bidirectional. The bidirectional cutting head 213 allows the flap 21 to rotate both counterclockwise and clockwise. When material gets stuck in the feed pipe 1, the flap 21 can be controlled to rotate in the opposite direction, thereby quickly clearing the feed pipe 1.

[0043] The burner of this invention includes the feeding device described in the above embodiments.

[0044] The burner according to the embodiments of the present invention, by employing the feeding device of the above embodiments, has good sealing performance, high feeding efficiency, and high burner operation safety.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A feeding device, comprising: The feed pipe has a feed channel; A feeding assembly includes multiple flaps, which are spaced apart along the length of the feed pipe within the feed channel. Each flap has an open position and a closed position relative to the feed pipe. In the closed position, the flap can block the feed channel, and in the open position, the flap can connect the feed channel. When one of the flaps is in the open position, at least one of the remaining flaps is in the closed position. The flap is rotatably connected to the feed pipe via a rotating shaft. The rotating shaft passes through the feed pipe radially and the axis of the rotating shaft is orthogonal to the central axis of the feed pipe. The flap is an arc-shaped plate, which includes a first arc plate and a second arc plate. The protrusion direction of the first arc plate is opposite to that of the second arc plate, and both the first arc plate and the second arc plate are connected to the rotating shaft and are symmetrical about the center of the rotating shaft.

2. The feeding device according to claim 1, characterized in that, The feed pipe includes multiple pipe sections that are detachably connected in sequence, and multiple flaps are arranged one-to-one within the multiple pipe sections.

3. The feeding device according to claim 1, characterized in that, The outer wall of the feed pipe is provided with a plurality of reinforcing plates arranged at intervals along the length of the feed pipe. Each of the reinforcing plates corresponds to a plurality of flaps. In the closed position, the outer wall of the flaps at the contact position with the feed pipe is provided with a corresponding reinforcing plate.

4. The feeding device according to claim 1, characterized in that, The rotation phase difference between adjacent flaps is 90°.

5. The feeding device according to claim 1, characterized in that, If there is a gap L between the edge of the flap and the inner wall of the feed pipe, then the following condition must be met: 0.2mm≤L≤0.4mm.

6. The feeding device according to claim 1, characterized in that, The flap is provided with a cutting head on its side, which is parallel to the axis of the rotating shaft.

7. The feeding device according to claim 6, characterized in that, The cutting head is a bidirectional cutting head.

8. A burner, characterized in that, The burner includes the feeding device according to any one of claims 1-7.

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