Stokehole material uniformizing device of boiler

Abstract

The utility model relates to a boiler stokehole material uniformizing device which comprises a shell, a material uniformizing cavity is formed in the shell, a feeding connector and a hearth connecting flange are integrally formed at the front end and the rear end of the shell respectively, a feeding port communicated with the material uniformizing cavity is formed in the feeding connector, and a discharging port communicated with the hearth connecting flange is formed in the hearth connecting flange. One end, far away from the feeding connector, of the material uniformizing cavity penetrates out of the shell to form a discharging port, material uniformizing plates are arranged at the middle positions of the upper side and the lower side of the material uniformizing cavity, the material uniformizing plates extend out of the discharging port from the position of the feeding port, materials can uniformly fall into a hearth through the arrangement of the material uniformizing plates, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of accessories of a boiler front feeding system, in particular to a boiler front material distributor. Background Art

[0002] A boiler is a device that converts the input energy (such as the chemical energy in fuel) into heat energy, and the generated steam or high-temperature water can be used for industrial production, heating, or converted into mechanical energy and electrical energy.

[0003] The existing feeding system is often installed on one side of the furnace, which will cause the materials to concentrate at a certain position in the furnace, forming a pile. The uneven distribution of materials will affect the combustion efficiency, resulting in incomplete combustion, and may generate harmful gases such as carbon monoxide. Therefore, the existing boilers will add a boiler front material distributor to the feeding system to improve this situation. The function of the boiler front material distributor is to make the materials more evenly dispersed in the furnace, thereby improving the combustion efficiency and reducing pollutant emissions.

[0004] An existing boiler front material distributor, such as a boiler front material distributor with a patent application number of CN202310162449.7, includes a housing, and is characterized in that: the housing includes a centrifugal barrel, a feeding joint and a discharging joint. The centrifugal barrel has a centrifugal cavity inside. The centrifugal barrel is cylindrical and has open ends at the front and rear. Sealing end caps are hermetically arranged at the front and rear ends of the centrifugal barrel. The feeding joint and the discharging joint are respectively connected to the side wall of the centrifugal barrel. The feeding joint is provided with a feeding channel leading to the inside of the centrifugal cavity, and the discharging joint is provided with a discharging channel leading to the inside of the centrifugal cavity. A material centrifugal rotation and throwing mechanism is rotatably connected in the centrifugal cavity, and a rotation driving mechanism for driving the material centrifugal rotation and throwing mechanism to rotate is arranged on the sealing end cap. This rotation driving mechanism includes a motor.

[0005] This structure can well achieve the purpose of making the materials fall into the furnace more evenly, but it needs to be specially equipped with a rotation driving mechanism (motor), so the cost is relatively high. In view of this problem, this application proposes a boiler front material distributor that can make the materials fall into the furnace relatively evenly and has a relatively low cost. Summary of the Utility Model

[0006] The utility model provides a boiler front material distributor, which solves the above problems existing in the prior art during use.

[0007] The technical solution of the present utility model is realized as follows: A material leveling device in front of a boiler furnace includes a housing. A leveling cavity is provided inside the housing. Feeding joints and furnace connection flanges are integrally formed at the front and rear ends of the housing respectively. A feeding port communicating with the leveling cavity is provided on the feeding joint. An outlet is formed by penetrating the housing at one end of the leveling cavity away from the feeding joint. A leveling plate is provided at the middle positions on the upper and lower sides of the leveling cavity, and the leveling plate extends from the position of the feeding port to the outlet.

[0008] Preferably, the cross-section of the leveling plate is wavy, and a number of first arc grooves extending in the front and rear directions are provided on the leveling plate.

[0009] Preferably, a number of second arc grooves extending in the front and rear directions are provided at the bottom of the leveling cavity in the housing.

[0010] Preferably, rotating shafts are fixedly connected to the middle parts on the left and right sides of the leveling plate respectively. The rotating shafts on both sides of the leveling plate are respectively rotationally fitted on the side walls on the left and right sides of the housing. A counterweight is fixedly connected to the lower side of the end of the leveling plate close to the feeding port. A swing driving mechanism for driving the leveling plate to swing up and down around the rotating shaft is provided in the feeding port.

[0011] Preferably, a feeding screw is further included. The swing driving mechanism includes an eccentric component. The rear end of the feeding screw extends into the feeding port. The eccentric component is eccentrically connected to the rear end of the feeding screw, and the eccentric component abuts against the lower side of the counterweight.

[0012] Preferably, the eccentric component includes an eccentric shaft and a runner. The eccentric shaft is eccentrically fixedly connected to the rear end of the feeding screw. The runner is rotatably connected to the eccentric shaft, and the runner is located below the counterweight and abuts against it.

[0013] Preferably, arc chamfers are provided at both the front and rear ends of the runner.

[0014] In summary, the beneficial effects of the present utility model are as follows:

[0015] 1. When the material feeding system in front of the furnace conveys the material into the feeding port of the present utility model, part of the material will enter onto the leveling plate, and part of the material will be located below the leveling plate, that is, on the bottom surface of the leveling cavity. The material sliding into the furnace from the leveling plate and the material sliding into the furnace from the bottom surface of the leveling cavity have different heights, so they will not accumulate at a certain position in the furnace. Therefore, the present utility model can make the material fall into the furnace more evenly through the setting of the leveling plate, and the cost is relatively low. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the present invention installed between the front furnace feeding system and the furnace chamber;

[0018] Figure 2 It is Figure 1 a partial enlarged schematic view of part A in

[0019] Figure 3 It is a schematic structural diagram of the present invention with the feeding screw part removed;

[0020] Figure 4 It is Figure 3 a schematic structural diagram when observed from another angle;

[0021] Figure 5 It is a schematic cross-sectional structure diagram of the present invention after removing part of the housing and the material leveling plate;

[0022] Figure 6 It is Figure 5 a schematic structural diagram when observed from another angle;

[0023] Figure 7 It is a schematic structural diagram of the present invention when the feeding screw rotates to make the material leveling plate swing upward.

[0024] In the figure: 1. Housing; 11. Material leveling cavity; 12. Inlet joint; 13. Furnace chamber connection flange; 14. Feed inlet; 15. Discharge outlet; 16. Second arc groove; 2. Material leveling plate; 21. First arc groove; 22. Rotating shaft; 23. Counterweight; 3. Feeding screw; 41. Eccentric shaft; 42. Runner; 421. Arc chamfer; 5. Front furnace feeding system; 6. Furnace chamber. Detailed implementation manners

[0025] The following will combine the attached Figure 1-7 drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Embodiment:

[0027] As Figures 3 to 6 shown, the utility model discloses a material leveling device in front of a boiler furnace, which includes a housing 1. A material leveling cavity 11 is formed inside the housing 1. The front and rear ends of the housing 1 are integrally formed with a feeding joint 12 and a furnace connection flange 13 respectively. A feeding port 14 communicating with the material leveling cavity 11 is formed on the feeding joint 12. One end of the material leveling cavity 11 away from the feeding joint 12 penetrates through the housing 1 to form a discharging port 15. In the utility model, a material leveling plate 2 is arranged at the middle positions on the upper and lower sides of the material leveling cavity 11, and the material leveling plate 2 extends from the position of the feeding port 14 to the discharging port 15.

[0028] As Figure 1 shown in connection with Figure 2 the figure, when in use, the utility model is installed between a front-furnace feeding system 5 and a furnace 6, and is arranged in a downward slope from the front-furnace feeding system 5 towards the furnace 7. The front-furnace feeding system 5 is of a spiral conveying structure. The front-furnace feeding system 5 is connected to the feeding joint 12, and the utility model is connected to the furnace 6 through the furnace connection flange 13. The crushed materials are conveyed into the feeding port 14 of the feeding joint 12 at a fixed speed and quantity through the front-furnace feeding system 5, and then enter the material leveling cavity 11. Part of the materials entering the material leveling cavity 11 will enter the material leveling plate 2, and part of them will be located below the material leveling plate 2, that is, on the bottom surface of the material leveling cavity 11. The materials sliding into the furnace 6 from the material leveling plate 2 and the materials sliding into the furnace 6 from the bottom surface of the material leveling cavity 11 have different heights, so they will not accumulate at a certain position in the furnace 6. Therefore, through the setting of the material leveling plate 2, the utility model can make the materials fall into the furnace more evenly and at a lower cost.

[0029] Furthermore, the cross-section of the material leveling plate 2 is wavy, and the material leveling plate 2 is provided with a number of first arc-shaped grooves 21 extending in the front and rear directions. The setting of the first arc-shaped grooves 21 facilitates the materials entering the material leveling plate 2 to enter the first arc-shaped grooves 21 and slide into the furnace along the first arc-shaped grooves 21. Since there are multiple first arc-shaped grooves 21 and they are spaced apart, it helps to scatter the materials and slide into the furnace along each first arc-shaped groove 21, thereby improving the evenness of the materials falling into the furnace.

[0030] Similarly, the housing 1 is provided with a number of second arc-shaped grooves 16 extending in the front and rear directions at the bottom of the material leveling cavity 11. The setting of the second arc-shaped grooves 16 further improves the evenness of the materials sliding into the furnace from the bottom of the material leveling cavity 11.

[0031] In the present invention, the middle parts of the left and right sides of the screed plate 2 are fixedly connected with a rotating shaft 22, and the rotating shafts 22 on both sides of the screed plate 2 are rotatably matched on the side walls of the left and right sides of the shell 1, and the lower side of the end of the screed plate 2 close to the feed port 14 is fixedly connected with a counterweight 23, and the counterweight 23 is used to make the end of the screed plate 2 close to the feed port 14 tilt downward, and a swing driving mechanism for driving the screed plate 2 to swing up and down with the rotating shaft 22 as the center is provided in the feed port 14. The present invention also includes a feeding screw 3, which is also a part of the feeding system in front of the furnace. The feeding screw 3 is driven by a motor and is used to spirally convey the material into the feed port 14, wherein the swing drive mechanism specifically includes an eccentric component. The rear end of the feeding screw extends into the feed port 14, and the eccentric component is eccentrically connected to the rear end of the feeding screw 5. The eccentric component forms a resistance to the lower side of the counterweight block 23. The rotation of the feeding screw 5 drives the eccentric component to drive the counterweight block 23 up and down, thereby causing the leveling plate 2 to move up and down. During the up and down movement of the leveling plate 2, the material that slides into the furnace from the leveling plate 2 is dispersed and slides into different positions of the furnace.

[0032] More specifically, the eccentric assembly includes an eccentric shaft 41 and a rotating wheel 42. The eccentric shaft 41 is eccentrically fixedly connected to the rear end of the feeding screw 5, and the rotating wheel 42 is rotatably connected to the eccentric shaft 41. The rotating wheel 42 is located at the lower side of the counterweight 23 to form a resistance to it, and the contact is made through the rotating wheel 42. When the feeding screw 5 rotates, the eccentric shaft 41 is driven, and the eccentric shaft 41 drives the material leveling plate 2 to swing up and down with the rotating shaft 22 as the center through the rotating wheel 42. Figure 7 It is a structural schematic diagram of the utility model when the feeding screw rotates to make the material leveling plate swing upward.

[0033] Furthermore, arc chamfers 421 are provided at both the front and rear ends of the rotating wheel 42. When the rotating wheel 42 moves the material leveling plate 2 to swing up and down around the rotating shaft 22, an angle is formed between the rotating wheel 42 and the counterweight block 23. The setting of the arc chamfers 421 can reduce the wear between them.

[0034] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler furnace sparger, comprising a housing, characterized in that: A material mixing chamber is provided in the shell, and a feed joint and a furnace connecting flange are integrally formed at the front and rear ends of the shell respectively. A feed port connected to the material mixing chamber is provided on the feed joint, and an end of the material mixing chamber away from the feed joint penetrates through the shell to form a discharge port. The material mixing chamber is provided with a material mixing plate at the middle position of the upper and lower sides thereof, and the material mixing plate extends from the feed port to the discharge port.

2. A boiler front sparger according to claim 1, characterized in that: The cross section of the material leveling plate is wavy, and the material leveling plate is provided with a plurality of first arc-shaped grooves extending forward and backward.

3. A boiler front sparger according to claim 1 or 2, characterized in that: The shell body is provided with a plurality of second arc grooves extending forward and backward at the bottom of the material mixing chamber.

4. A boiler front sparger according to claim 1 or 2, characterized in that: A rotating shaft is fixedly connected to the middle part of the left and right sides of the material leveling plate, and the rotating shafts on both sides of the material leveling plate are rotatably fitted on the side walls of the left and right sides of the shell respectively. A counterweight block is fixedly connected to the lower side of one end of the material leveling plate close to the feed port, and a swinging drive mechanism is provided in the feed port for driving the material leveling plate to swing up and down with the rotating shaft as the center.

5. A boiler front sparger according to claim 4, characterized in that: It also includes a feeding screw, and the swing drive mechanism includes an eccentric component. The rear end of the feeding screw extends into the feed port, and the eccentric component is eccentrically connected to the rear end of the feeding screw, and the eccentric component forms a resistance to the lower side of the counterweight block.

6. A boiler front sparger according to claim 5, characterized in that: The eccentric assembly includes an eccentric shaft and a rotating wheel. The eccentric shaft is eccentrically fixedly connected to the rear end of the feeding screw. The rotating wheel is rotatably connected to the eccentric shaft. The rotating wheel is located at the lower side of the counterweight block to form a resistance thereto.

7. A boiler front sparger according to claim 6, characterized in that: The front and rear ends of the rotating wheel are both provided with arc chamfers.

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