A new type of amine injection device applied to a fluidized bed boiler

Abstract

This invention relates to the technical field of environmental protection equipment and discloses a novel amine spraying device for fluidized bed boilers. The device includes a support base, a boiler fixedly connected to the top of the support base, a lifting lug welded to the top of the boiler, a discharge funnel connected to the top of the boiler, and a sealing assembly connected to the surface of the boiler. The operating mechanism includes a spraying assembly bolted to the side wall of the boiler and a fixing plate fixedly connected to the end of the spraying assembly. The invention rotates a lifting rod around the insertion point of the support arm, causing a hook to rotate. The hook causes a hanging plate to move away from or cover the discharge port. A rotating limiting block is locked by a threaded fixing rod on its surface to prevent accidental rotation of the hanging plate. The output end of the drive motor drives a rotating shaft to rotate via an adapter installation method. The end of the rotating shaft is fixedly connected to a spraying pipe, driving the spraying head assembly and nozzle assembly to rotate, thus achieving uniform spraying of amine liquid inside the boiler.

Description

Technical Field

[0001] This invention relates to the technical field of environmental protection equipment, and in particular to a novel amine injection device for use in fluidized bed boilers. Background Technology

[0002] Fluidized bed boilers exhibit intense gas-solid flow within the furnace, creating a complex environment characterized by high temperatures and high particle concentrations. To efficiently remove nitrogen oxides, a reducing agent needs to be precisely injected into specific temperature zones within the furnace. The atomization characteristics, spatial distribution, and mixing effect of the reducing agent with the flue gas directly determine the rate and extent of the denitrification reaction. Therefore, the injection performance of the amine injection device is one of the key factors affecting deep denitrification in fluidized bed boilers.

[0003] In harsh environments with prolonged high temperatures and high particle concentrations, dynamic seal failure can easily lead to amine leakage or pipeline entanglement. This not only affects the continuity and stability of the liquid supply but also poses a direct threat to denitrification efficiency and the long-term reliable operation of the unit. Summary of the Invention

[0004] In view of the problems existing in the novel amine injection device used in fluidized bed boilers, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a novel amine injection device for use in fluidized bed boilers.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including, The main structure includes a support base, a boiler fixedly connected to the top of the support base, a lifting lug welded to the top of the boiler, a feeding hopper connected to the top of the boiler, and a sealing assembly connected to the surface of the boiler. The working mechanism includes a spraying assembly bolted to the side wall of the boiler, a fixing plate fixedly connected to the end of the spraying assembly, a connecting assembly welded to the end of the spraying assembly, a conveying assembly disposed at the bottom of the closed assembly, and a material box snapped onto the top of the conveying assembly. The spraying assembly includes a protective shell bolted to the side wall of the boiler, a drive motor fixedly connected to the inner wall of the protective shell, and a rotating shaft adapted to be installed at the output end of the drive motor.

[0007] As a preferred embodiment of the novel amine spraying device for fluidized bed boilers described in this invention, the spraying assembly further includes a spraying pipe fixedly connected to the end of the rotating shaft, a spraying head assembly connected to the side wall of the spraying pipe, and a nozzle assembly connected to the end of the spraying head assembly.

[0008] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the enclosed assembly includes a discharge port connected to the surface of the boiler and a support arm welded to the side wall of the discharge port.

[0009] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the enclosed assembly further includes a rod inserted into the inner wall of the support arm and a hook fixedly connected to the end of the rod.

[0010] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the sealing assembly further includes a sealing plate inserted into the surface of the hook, and a limiting groove block rotatably connected to the side wall of the boom.

[0011] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the connecting assembly includes a grooved arc plate welded to the end of the spray pipe, a pulley assembly snapped into the inner wall of the grooved arc plate, and a sleeve fitted onto the surface of the pulley assembly.

[0012] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the connecting assembly further includes a shaped connecting plate fixedly connected to the top of the casing, a connecting pipe welded to the inner wall of the shaped connecting plate, and a connecting flange fixedly connected to the end of the connecting pipe.

[0013] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the conveying assembly includes a conveying base plate disposed at the bottom of the discharge port, an mounting plate bolted to the side wall of the conveying base plate, and a servo motor fixedly connected to the inner wall of the mounting plate.

[0014] As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the conveying assembly further includes a lead screw adapted to be installed at the output end of the servo motor, a contact switch fixedly connected to the top of the conveying base plate, and a shaped groove block meshing with the side wall of the lead screw. As a preferred embodiment of the novel amine injection device for fluidized bed boilers described in this invention, the conveying assembly further includes a movable carrier plate hinged to the top of the irregular trough block, a connecting lug welded to the side wall of the movable carrier plate, and a spring pull rod fixedly connected to the side wall of the connecting lug.

[0015] The beneficial effects of this invention are as follows: the boom rotates around the insertion point of the support arm, causing the hook to rotate; the hook causes the hanging plate it hooks to move away from or cover the discharge port; the rotating limiting groove block is locked by the threaded fixing boom on its surface to prevent the hanging plate from rotating accidentally; the output end of the drive motor drives the rotating shaft to rotate through the adapter installation method; the end of the rotating shaft is fixedly connected to the spray pipe, driving the spray head assembly and nozzle assembly to rotate, realizing the uniform spraying of amine liquid inside the boiler; the rotation of the spray pipe causes the grooved arc plate and the pulley assembly to roll relative to each other. The pulley block and the housing form a rotary support, keeping the irregular connecting plate, connecting pipe and connecting flange stationary, so that it can be connected to the stationary external liquid supply pipeline. After the material is loaded, the weight of the material box causes the movable carrier plate to rotate and sink around the hinge point between it and the irregular trough block. The bottom of the movable carrier plate touches the contact switch fixed to the top of the conveying base plate, and then the servo motor starts. Its output end drives the lead screw to rotate, and the irregular trough block that meshes with it converts the rotation into translation, driving the movable carrier plate and the material box to move horizontally, realizing heavy-load automatic conveying. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the closed component of the present invention.

[0018] Figure 3 This is a schematic diagram of the spraying assembly of the present invention.

[0019] Figure 4 This is a schematic diagram of the connection component of the present invention.

[0020] Figure 5 This is a schematic diagram of the conveying component of the present invention.

[0021] In the diagram: 100, Main structure; 101, Support base; 102, Boiler; 103, Lifting lug; 104, Feeding funnel; 105, Enclosure assembly; 105a, Discharge port; 105b, Support arm; 105c, Lifting rod; 105d, Lifting hook; 105e, Sealing plate; 105f, Limiting slot block; 200, Working mechanism; 201, Spraying assembly; 201a, Protective shell; 201b, Drive motor; 201c, Rotating shaft; 201d, Spraying pipe; 201e, Spraying head assembly; 201f, Nozzle assembly; 202. Fixed plate; 203. Connecting assembly; 203a. Grooved arc plate; 203b. Pulley block; 203c. Housing; 203d. Irregular connecting plate; 203e. Connecting pipe; 203f. Connecting flange; 204. Conveying assembly; 204a. Conveying base plate; 204b. Mounting plate; 204c. Servo motor; 204d. Lead screw; 204e. Contact switch; 204f. Irregular groove block; 204g. Movable carrier plate; 204h. Connecting lug; 204i. Spring tie rod; 205. Material box. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0026] Example 1 (Refer to) Figures 1-3 The first embodiment of the present invention provides a novel amine injection device for use in fluidized bed boilers, the device comprising:

[0027] The main structure 100 includes a support base 101, a boiler 102 fixedly connected to the top of the support base 101, a lifting lug 103 welded to the top of the boiler 102, a feeding funnel 104 connected to the top of the boiler 102, and a sealing assembly 105 connected to the surface of the boiler 102. The working mechanism 200 includes a spraying assembly 201 bolted to the side wall of the boiler 102, a fixing plate 202 fixedly connected to the end of the spraying assembly 201, a connecting assembly 203 welded to the end of the spraying assembly 201, a conveying assembly 204 disposed at the bottom of the closed assembly 105, and a material box 205 snapped onto the top of the conveying assembly 204. The spraying assembly 201 includes a protective shell 201a bolted to the side wall of the boiler 102, a drive motor 201b fixedly connected to the inner wall of the protective shell 201a, and a rotating shaft 201c adapted to be installed at the output end of the drive motor 201b.

[0028] Specifically, the fixed connection between the support base 101 and the boiler 102 forms a stable working foundation; the lifting lug 103 on the top of the boiler 102 facilitates the overall hoisting and maintenance of the equipment; the feeding hopper 104 enables the smooth conveying of materials into the boiler 102; the sealing component 105 on the surface of the boiler 102 ensures the sealing during operation; the protective shell 201a provides protection for the internal drive motor 201b; the drive motor 201b drives the rotating shaft 201c to rotate through an adapter installation method, providing power for the spraying operation.

[0029] Furthermore, the spraying assembly 201 also includes a spraying pipe 201d fixedly connected to the end of the rotating shaft 201c, a spraying head assembly 201e connected to the side wall of the spraying pipe 201d, and a nozzle assembly 201f connected to the end of the spraying head assembly 201e.

[0030] The rotational motion of the rotating shaft 201c is transmitted to the spray pipe 201d fixedly connected to its end, causing the spray pipe 201d to rotate synchronously; the spray head group 201e connected to the side wall of the spray pipe 201d and the nozzle group 201f at its end rotate accordingly, uniformly spraying the amine liquid onto the inner wall of the boiler 102 in a rotating spray manner.

[0031] Preferably, the enclosure assembly 105 includes a discharge port 105a communicating with the surface of the boiler 102, and a support arm 105b welded to the side wall of the discharge port 105a.

[0032] It should be noted that the discharge port 105a on the surface of the boiler 102 facilitates material discharge; the support arm 105b welded to the side wall of the discharge port 105a provides a stable and reliable support base for the subsequent installation of opening and closing components such as the lifting rod 105c.

[0033] In use, the enclosure assembly 105 also includes a boom 105c inserted into the inner wall of the support arm 105b, and a hook 105d fixedly connected to the end of the boom 105c; the enclosure assembly 105 also includes a sealing plate 105e inserted into the surface of the hook 105d, and a limiting groove block 105f rotatably connected to the side wall of the boom 105c.

[0034] In summary, the boom 105c, inserted into the support arm 105b, can rotate around it, causing the hook 105d, which is fixedly connected to its end, to rotate synchronously. The hook 105d can quickly open and close the discharge port 105a by hooking or releasing the sealing plate 105e inserted into its surface. The limiting groove block 105f, which is rotatably connected to the side wall of the boom 105c, can rotate to engage with the edge of the hook 105d or the sealing plate 105e, providing mechanical locking for the opening and closing state, preventing accidental loosening during operation, and ensuring the reliability of the seal.

[0035] Example 2 (Refer to) Figures 4-5 This is the second embodiment of the present invention, which differs from the first embodiment in that: after the spraying operation is completed, the operating mechanism 200 facilitates the transportation of the sprayed material.

[0036] The connecting assembly 203 includes a grooved arc plate 203a welded to the end of the spray pipe 201d, a pulley assembly 203b snapped into the inner wall of the grooved arc plate 203a, and a sleeve 203c fitted onto the surface of the pulley assembly 203b. Furthermore, when the spray pipe 201d rotates, the grooved arc plate 203a at its end rotates accordingly, generating relative rolling with the pulley group 203b that is engaged therein; the sleeve 203c is fitted onto the surface of the pulley group 203b and remains relatively stationary.

[0037] Furthermore, the connecting assembly 203 also includes a shaped connecting plate 203d fixedly connected to the top of the housing 203c, a connecting pipe 203e welded to the inner wall of the shaped connecting plate 203d, and a connecting flange 203f fixedly connected to the end of the connecting pipe 203e.

[0038] Among them, the irregular connecting plate 203d fixed to the top of the casing 203c remains stationary; the connecting pipe 203e welded to its inner wall and the connecting flange 203f at the end are also stationary and connected to the externally fixed liquid supply pipeline.

[0039] In use, the conveying assembly 204 includes a conveying base plate 204a disposed at the bottom of the discharge port 105a, a mounting plate 204b bolted to the side wall of the conveying base plate 204a, and a servo motor 204c fixedly connected to the inner wall of the mounting plate 204b; the conveying assembly 204 also includes a lead screw 204d adapted to be installed at the output end of the servo motor 204c, a contact switch 204e fixedly connected to the top of the conveying base plate 204a, and a shaped groove block 204f meshing with the side wall of the lead screw 204d; the conveying assembly 204 also includes a movable carrier plate 204g hinged to the top of the shaped groove block 204f, a connecting ear 204h welded to the side wall of the movable carrier plate 204g, and a spring pull rod 204i fixedly connected to the side wall of the connecting ear 204h.

[0040] In summary, after the material-bearing box 205 is loaded, the movable carrier plate 204g rotates and sinks around its hinge point with the irregular groove block 204f. Its bottom touches the contact switch 204e fixed to the top of the conveyor base plate 204a. Then, the servo motor 204c starts and drives the lead screw 204d at its output end to rotate. The irregular groove block 204f that meshes with it converts the rotation into translation, driving the movable carrier plate 204g and the material box 205 to move horizontally. The spring rod 204i provides the movable carrier plate 204g with reset elasticity through the connecting lug 204h.

[0041] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0042] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A novel amine injection device for use in fluidized bed boilers, characterized in that: include, The main structure (100) includes a support base (101), a boiler (102) fixedly connected to the top of the support base (101), a lifting lug (103) welded to the top of the boiler (102), a feeding funnel (104) connected to the top of the boiler (102), and a closing assembly (105) connected to the surface of the boiler (102). The working mechanism (200) includes a spraying assembly (201) bolted to the side wall of the boiler (102), a fixing plate (202) fixedly connected to the end of the spraying assembly (201), a connecting assembly (203) welded to the end of the spraying assembly (201), a conveying assembly (204) disposed at the bottom of the enclosure assembly (105), and a material box (205) snapped onto the top of the conveying assembly (204). The spraying assembly (201) includes a protective shell (201a) bolted to the side wall of the boiler (102), a drive motor (201b) fixedly connected to the inner wall of the protective shell (201a), and a rotating shaft (201c) adapted to be installed at the output end of the drive motor (201b).

2. The novel amine injection device for fluidized bed boilers according to claim 1, characterized in that: The spraying assembly (201) further includes a spraying pipe (201d) fixedly connected to the end of the rotating shaft (201c), a spraying head assembly (201e) connected to the side wall of the spraying pipe (201d), and a nozzle assembly (201f) connected to the end of the spraying head assembly (201e).

3. A novel amine injection device for use in a fluidized bed boiler according to claim 1, characterized in that: The enclosure assembly (105) includes a discharge port (105a) connected to the surface of the boiler (102) and a support arm (105b) welded to the side wall of the discharge port (105a).

4. A novel amine injection device for use in a fluidized bed boiler according to claim 3, characterized in that: The enclosure assembly (105) also includes a boom (105c) inserted into the inner wall of the support arm (105b) and a hook (105d) fixedly connected to the end of the boom (105c).

5. A novel amine injection device for a fluidized bed boiler according to any one of claims 4, characterized in that: The enclosure assembly (105) also includes a sealing plate (105e) inserted into the surface of the hook (105d) and a limiting groove block (105f) rotatably connected to the side wall of the boom (105c).

6. A novel amine injection device for use in a fluidized bed boiler according to claim 2, characterized in that: The connecting assembly (203) includes a grooved arc plate (203a) welded to the end of the spray pipe (201d), a pulley assembly (203b) snapped onto the inner wall of the grooved arc plate (203a), and a sleeve (203c) fitted onto the surface of the pulley assembly (203b).

7. A novel amine injection device for use in a fluidized bed boiler according to claim 6, characterized in that: The connecting assembly (203) further includes a shaped connecting plate (203d) fixedly connected to the top of the housing (203c), a connecting pipe (203e) welded to the inner wall of the shaped connecting plate (203d), and a connecting flange (203f) fixedly connected to the end of the connecting pipe (203e).

8. A novel amine injection device for use in a fluidized bed boiler according to claim 3, characterized in that: The conveying assembly (204) includes a conveying base plate (204a) disposed at the bottom of the discharge port (105a), a mounting plate (204b) bolted to the side wall of the conveying base plate (204a), and a servo motor (204c) fixedly connected to the inner wall of the mounting plate (204b).

9. A novel amine injection device for use in a fluidized bed boiler according to claim 8, characterized in that: The conveying assembly (204) also includes a lead screw (204d) adapted to be installed at the output end of the servo motor (204c), a contact switch (204e) fixedly connected to the top of the conveying base plate (204a), and a shaped groove block (204f) meshing with the side wall of the lead screw (204d).

10. A novel amine injection device for use in a fluidized bed boiler according to claim 9, characterized in that: The conveying assembly (204) also includes a movable carrier plate (204g) hinged to the top of the irregular groove block (204f), a connecting lug (204h) welded to the side wall of the movable carrier plate (204g), and a spring pull rod (204i) fixedly connected to the side wall of the connecting lug (204h).

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