Purging device for boiler flue gas desulfurization return feeder

Abstract

The utility model discloses a boiler flue gas desulfurization return material feeder's purging device relates to return material feeder technical field. Including: fixed pipe, the fixed pipe outside is equipped with air inlet pipe and ash pipe respectively, air inlet pipe sets up in fixed pipe side wall, ash pipe sets up in fixed pipe bottom, and air inlet pipe, ash pipe are linked together with fixed pipe, the fixed pipe top is equipped with the apron, the apron inside is equipped with the exhaust pipe, cleaning assembly sets up in fixed pipe inside is used for cleaning fuel, the cleaning assembly includes purging piece and rotating part, and purging piece sets up in fixed pipe inside. The utility model discloses through the setting of purging piece and rotating part, has realized through the cooperation of support pipe, communication pipe, air nozzle, rotating block, connecting rod, rotating plate, gear ring and gear, thereby in the use process to the fuel of return material feeder conical part accumulation and purges, avoids fuel accumulation in return material feeder conical part, leads to the phenomenon that return material feeder appears the block.

Description

Technical Field

[0001] This utility model relates to the field of return feeder technology, specifically to a purging device for a boiler flue gas desulfurization return feeder. Background Technology

[0002] The circulating fluidized bed boiler adopts the clean coal combustion technology with the highest degree of industrialization. The circulating fluidized bed boiler adopts fluidized combustion and its main structure includes two parts: combustion chamber and circulating furnace. The biggest difference between it and bubbling fluidized bed combustion technology is the high operating wind speed, which enhances the heterogeneous reaction processes such as combustion and desulfurization. The boiler capacity can be expanded to a large capacity acceptable to the power industry.

[0003] The return feeder is a device that connects the furnace of a circulating fluidized bed boiler to a high-temperature separator. Solid materials circulate frequently between the furnace and the separator. The circulation loop contains high concentrations and fine particles of solid materials. Most of the materials separated by the return feeder are discharged by gravity, which can easily lead to fuel accumulation in the conical part of the return feeder and cause blockage. To address this, a purging device for the boiler flue gas desulfurization return feeder is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that most of the materials separated by the return feeder are discharged by gravity, which easily leads to fuel accumulation in the conical part of the return feeder and causes blockage. This utility model provides a purging device for the boiler flue gas desulfurization return feeder.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] The purging device for the boiler flue gas desulfurization return feeder includes:

[0007] A fixed pipe is provided with an air inlet pipe and an ash discharge pipe on its outer side. The air inlet pipe is located on the side wall of the fixed pipe, and the ash discharge pipe is located at the bottom of the fixed pipe. The air inlet pipe and the ash discharge pipe are connected to the fixed pipe. A cover plate is provided on the top of the fixed pipe, and an exhaust pipe is provided inside the cover plate.

[0008] A cleaning assembly, disposed inside a fixed tube, is used to clean the fuel. The cleaning assembly includes a purging component and a rotating component. The purging component is disposed inside the fixed tube and is used to purge the fuel. The rotating component is disposed inside the fixed tube and is used to adjust the angle of the purging component.

[0009] Furthermore, the purging component includes a support tube, which is disposed inside the ash discharge pipe, and the axis of the support tube is parallel to the height direction of the fixed pipe. A rotating block is rotatably connected to the outside of the support tube, and a connecting pipe is provided outside the rotating block. There are multiple connecting pipes, and an air nozzle is provided outside the connecting pipe. There are multiple air nozzles, and the air nozzles are staggered.

[0010] Furthermore, the rotating component includes a rotating plate disposed inside the cover plate and rotatably connected to the exhaust pipe. The rotating plate has a toothed ring on the side opposite to the cover plate, and a gear meshes inside the toothed ring and is rotatably connected to the cover plate. The rotating plate has a connecting rod on the side opposite to the connecting pipe, and the connecting rod connects the connecting pipe to the rotating plate.

[0011] Furthermore, at least one connecting ring is provided on the outer side of the connecting rod, and the connecting ring is fixedly connected to the connecting rod.

[0012] Furthermore, an installation ring is provided between the cover plate and the fixed pipe, and a bolt is provided inside the installation ring.

[0013] Furthermore, the rotating plate is rotatably connected to a support ring relative to the fixed tube side, and the support ring is connected to the cover plate.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model, through the arrangement of a purging component and a rotating component, achieves the function of purging accumulated fuel in the conical part of the return feeder during use by cooperating with a support pipe, connecting pipe, air nozzle, rotating block, connecting rod, rotating plate, gear ring, and gear, thereby preventing fuel from accumulating in the conical part of the return feeder and causing blockage. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial sectional view of the present invention;

[0018] Figure 3 This is a utility model Figure 3 Enlarged view of section A in the middle;

[0019] Figure 4 This is an enlarged view of the purging component of this utility model;

[0020] Reference numerals in the attached drawings: 1. Fixed pipe; 101. Air inlet pipe; 102. Ash discharge pipe; 103. Exhaust pipe; 2. Blowing component; 201. Support pipe; 202. Connecting pipe; 203. Air nozzle; 204. Rotating block; 3. Rotating component; 301. Connecting rod; 302. Connecting ring; 303. Rotating plate; 304. Gear ring; 305. Gear; 306. Cover plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0025] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 4As shown, the purging device of the boiler flue gas desulfurization return feeder includes: a fixed pipe 1, with an inlet pipe 101 and an ash discharge pipe 102 respectively provided on the outside of the fixed pipe 1. The inlet pipe 101 is located on the side wall of the fixed pipe 1, and the ash discharge pipe 102 is located at the bottom of the fixed pipe 1. The inlet pipe 101 and the ash discharge pipe 102 are connected to the fixed pipe 1. A cover plate 306 is provided on the top of the fixed pipe 1, and an exhaust pipe 103 is provided inside the cover plate 306; a cleaning component is provided inside the fixed pipe 1 for cleaning the fuel. The cleaning component includes a purging element 2 and a rotating element 3. The purging element 2 is provided inside the fixed pipe 1 for purging the fuel, and the rotating element 3 is provided inside the fixed pipe 1 for adjusting the angle of the purging element 2. Specifically, when the fuel in the boiler is heated... During combustion, the flue gas is guided through the intake pipe 101, and then the fuel and exhaust gas inside the flue gas are separated through the fixed pipe 1, so that the flue gas and fuel are discharged through the exhaust pipe 103 and the ash discharge pipe 102 respectively. During the fuel separation process, the fuel accumulated at the corner inside the fixed pipe 1 is purged by the cooperation of the purging component 2 and the rotating component 3, so as to ensure that the fuel is fully discharged through the ash discharge pipe 102. The intake pipe 101 is set on the side wall of the fixed pipe 1 to guide the flue gas, so that the flue gas can rotate along the inner wall of the fixed pipe 1, thereby realizing the separation of solids and flue gas. When in use, the rotating component 3 can control the purging component 2, so that the purging component 2 can fully clean the fuel accumulated inside the fixed pipe 1.

[0027] like Figures 1 to 4 As shown, the purging component 2 includes a support pipe 201, which is disposed inside the ash discharge pipe 102. The axis of the support pipe 201 is parallel to the height direction of the fixed pipe 1. A rotating block 204 is rotatably connected to the outside of the support pipe 201. Multiple connecting pipes 202 are provided outside the rotating block 204. Multiple air nozzles 203 are provided outside the connecting pipes 202, and the air nozzles 203 are staggered. Specifically, the support pipe 201 and the ash discharge pipe 102 are connected by welding or bolts to ensure the stability of the support pipe 201 during use. During use, the support pipe 201 introduces air while also... The connecting pipe 202 and the rotating block 204 can provide support. The bottom end of the support pipe 201 is connected to the air compressor. The rotating block 204 is a high-temperature resistant air guide slip ring. During use, the rotating block 204 can connect the connecting pipe 202 and the support pipe 201, so that compressed air can be blown out through the air nozzle 203. The air nozzle 203 is connected to the connecting pipe 202 by bolts. The shape of the air nozzle 203 can be selected according to the requirements. The air nozzle 203 can also guide the direction of air flow to ensure that the compressed air can stably clean the fuel. The connecting pipe 202 and the rotating block 204 are connected by bolts.

[0028] like Figures 1 to 4As shown, the rotating component 3 includes a rotating plate 303, which is disposed inside the cover plate 306 and rotatably connected to the exhaust pipe 103. A gear ring 304 is provided on the side of the rotating plate 303 opposite to the cover plate 306, and a gear 305 meshes inside the gear ring 304. The gear 305 is rotatably connected to the cover plate 306. A connecting rod 301 is provided on the side of the rotating plate 303 opposite to the connecting pipe 202, and the connecting rod 301 connects the connecting pipe 202 to the rotating plate 303. Specifically, a motor is also provided outside the gear 305. During the purging process, the gear ring 304 is driven to rotate by the cooperation of the motor and gear 305. The rotating gear ring 304 drives the rotating plate 303, the connecting rod 301 and the connecting pipe 202 to rotate, thereby purging the dye accumulated on the inner wall of the fixed pipe 1. The rotating plate 303 and the gear ring 304 are connected by bolts, and the gear ring 304 is connected to the exhaust pipe 103 by a rotating ring. The connecting rod 301 is connected to the rotating plate 303 and the connecting pipe 202 by bolts, thereby driving the connecting pipe 202 to rotate.

[0029] like Figures 1 to 4 As shown, at least one connecting ring 302 is provided on the outer side of the connecting rod 301, and the connecting ring 302 is fixedly connected to the connecting rod 301. Specifically, the connecting ring 302 and the connecting rod 301 are connected by welding or bolts, thereby connecting multiple connecting rods 301 to ensure the stability of the rotation time of the connecting rod 301.

[0030] like Figures 1 to 4 As shown, an installation ring is provided between the cover plate 306 and the fixed tube 1. The installation ring has a bolt inside. Specifically, the cover plate 306 can be quickly installed and disassembled by the cooperation of the installation ring and the bolt, which facilitates the maintenance of the gear ring 304 and gear 305 during use.

[0031] like Figures 1 to 4 As shown, a support ring is rotatably connected to the rotating plate 303 relative to the fixed pipe 1 side, and the support ring is connected to the cover plate 306. Specifically, a sealing element is provided between the support ring, the rotating ring and the rotating plate 303, so as to block the flue gas during use and prevent the flue gas from contacting the toothed ring 304. The support ring can also provide support for the rotating plate 303 during use to ensure the stability of the rotating plate 303 when rotating.

[0032] like Figures 1 to 4As shown, the working state of the purging device of the boiler flue gas desulfurization return feeder is as follows: When the boiler is running, the flue gas enters the fixed pipe 1 through the inlet pipe 101 and rotates along the inner wall of the fixed pipe 1 to separate the solid fuel and the exhaust gas. The exhaust gas is discharged through the exhaust pipe 103 on the cover plate 306, while the solid fuel falls to the ash discharge pipe 102. At the same time, the support pipe 201 introduces the compressed air from the air compressor, which is then introduced into multiple connecting pipes 202 through the rotating block 204. Finally, it is sprayed out through the staggered air nozzles 203 to purge the fuel accumulated inside the fixed pipe 1 and at the corners. During this period, the motor drives the gear 305 to rotate, and the gear ring 304 meshing with the gear 305 drives the rotating plate 303 to rotate around the exhaust pipe 103. The rotating plate 303 drives the connecting pipe 202 and the rotating block 204 to rotate around the support pipe 201 through the connecting rod 301, realizing multi-angle purging of the air nozzles 203, ensuring that the fuel is fully cleaned and discharged through the ash discharge pipe 102.

[0033] In summary, this utility model includes: a fixed pipe 1, with an air inlet pipe 101 and an ash discharge pipe 102 respectively provided on the outer side of the fixed pipe 1. The air inlet pipe 101 is located on the side wall of the fixed pipe 1, and the ash discharge pipe 102 is located at the bottom of the fixed pipe 1. The air inlet pipe 101 and the ash discharge pipe 102 are connected to the fixed pipe 1. A cover plate 306 is provided on the top of the fixed pipe 1, and an exhaust pipe 103 is provided inside the cover plate 306. A cleaning assembly is provided inside the fixed pipe 1 for cleaning the fuel. The cleaning assembly includes a purging component 2 and a rotating component 3. The purging component 2 is located inside the fixed pipe 1. Inside the tube 1, fuel is purged. The rotating component 3 is located inside the fixed tube 1 and is used to adjust the angle of the purging component 2. Through the arrangement of the purging component 2 and the rotating component 3, this utility model achieves the purging of fuel accumulated in the conical part of the return feeder during use, by cooperating with the support tube 201, connecting tube 202, air nozzle 203, rotating block 204, connecting rod 301, rotating plate 303, gear ring 304 and gear 305, thus preventing fuel from accumulating in the conical part of the return feeder and causing blockage.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A purging device for a boiler flue gas desulfurization return feeder, characterized in that, include: A fixed pipe is provided with an air inlet pipe and an ash discharge pipe on its outer side. The air inlet pipe is located on the side wall of the fixed pipe, and the ash discharge pipe is located at the bottom of the fixed pipe. The air inlet pipe and the ash discharge pipe are connected to the fixed pipe. A cover plate is provided on the top of the fixed pipe, and an exhaust pipe is provided inside the cover plate. A cleaning assembly, disposed inside a fixed tube, is used to clean the fuel. The cleaning assembly includes a purging component and a rotating component. The purging component is disposed inside the fixed tube and is used to purge the fuel. The rotating component is disposed inside the fixed tube and is used to adjust the angle of the purging component.

2. The purging device for the boiler flue gas desulfurization return feeder according to claim 1, characterized in that, The purging component includes a support tube, which is disposed inside the ash discharge pipe, and the axis of the support tube is parallel to the height direction of the fixed pipe. A rotating block is rotatably connected to the outside of the support tube. A connecting pipe is provided outside the rotating block, and there are multiple connecting pipes. An air nozzle is provided outside the connecting pipe, and there are multiple air nozzles, which are staggered.

3. The purging device for the boiler flue gas desulfurization return feeder according to claim 1, characterized in that, The rotating component includes a rotating plate disposed inside the cover plate and rotatably connected to the exhaust pipe. The rotating plate has a toothed ring on the side opposite to the cover plate, and a gear meshes inside the toothed ring and is rotatably connected to the cover plate. The rotating plate has a connecting rod on the side opposite to the connecting pipe, and the connecting rod connects the connecting pipe to the rotating plate.

4. The purging device for the boiler flue gas desulfurization return feeder according to claim 3, characterized in that, The outer side of the connecting rod is also provided with at least one connecting ring, and the connecting ring is fixedly connected to the connecting rod.

5. The purging device for the boiler flue gas desulfurization return feeder according to claim 1, characterized in that, An installation ring is provided between the cover plate and the fixed pipe, and a bolt is provided inside the installation ring.

6. The purging device for the boiler flue gas desulfurization return feeder according to claim 3, characterized in that, The rotating plate is rotatably connected to a support ring relative to the fixed pipe side, and the support ring is connected to the cover plate.

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