Feeding mechanism of boiler

Abstract

The utility model discloses a feeding mechanism of a boiler. The feeding mechanism comprises a feeding shell, an auger shaft, auger spiral blades, a rotary driving motor, an upper material guiding face, a lower material guiding face, a feeding port, a discharging port, a discharging pipeline and an air cooling assembly. By means of the mode, the feeding mechanism of the boiler can effectively prevent materials from being stacked at the tail end of the feeding shell, improve feeding efficiency and prolong the service life of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding equipment, in particular to a feeding mechanism of a boiler. Background Art

[0002] At present, in equipment such as biomass boilers or solid waste combustion furnaces, spiral feeding mechanisms are generally used for feeding. However, the current spiral feeding mechanisms still have some defects, such as:

[0003] 1. During feeding, materials are easily accumulated at the end of the feeding mechanism, which is not conducive to improving feeding efficiency, and the materials may corrode the feeding mechanism due to long-term accumulation;

[0004] 2. During operation, the spiral feeding mechanism will not only generate heat itself, but will also be affected by the high temperature in the boiler, accelerating the aging and damage of components. Utility Model Content

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] Provided is a boiler feeding mechanism, which includes: a feeding shell, an auger shaft, an auger spiral blade, a rotary drive motor, an upper material guide surface, a lower material guide surface, a material feed port, a material discharge port, a material discharge pipe, an air supply port, an air supply pipe, and a return air port.

[0007] The auger shaft is rotatably disposed in the feeding housing, the auger spiral blade is wound around the auger shaft, and the rotary drive motor is connected to the auger shaft to drive the auger shaft and the auger spiral blade to rotate in the feeding housing;

[0008] The feed port and the discharge port are respectively arranged at both ends of the loading shell, and the feed port is arranged at the upper part of the loading shell, and the discharge port is arranged at the lower part of the loading shell. The discharge pipe is provided at the discharge port, and the upper guide surface and the lower guide surface are arranged in the loading shell above the discharge port. The upper guide surface of the arc structure is arranged on the inner wall of the upper part of the loading shell to guide the material downward to the discharge port. The lower guide surface of the arc structure is arranged on the inner wall of the lower part of the loading shell, and its lower end extends to the discharge port to guide the material into the discharge port.

[0009] The upper part of the loading shell is obliquely provided with a plurality of air supply outlets, and the air supply outlets are toward the end of the loading shell. The air supply outlets are connected to the air supply ducts for conveying cooling gas to convey cold air into the loading shell for cooling. The return air outlet is arranged on the end face or side wall of the head end of the loading shell to discharge the hot air in the loading shell.

[0010] In a preferred embodiment of the present invention, both ends of the auger shaft are movably connected to the end surface of the feeding shell through bearings.

[0011] In a preferred embodiment of the present invention, the discharge pipe includes a curved portion and a straight portion connected to the curved portion.

[0012] In a preferred embodiment of the present invention, the curvature of the upper material guiding surface is greater than the curvature of the lower material guiding surface.

[0013] In a preferred embodiment of the present invention, the feeding shell, the upper material guiding surface and the lower material guiding surface are an integrated structure.

[0014] In a preferred embodiment of the present invention, filter screens are provided on the air supply port and the air return port.

[0015] In a preferred embodiment of the present invention, a refrigerator is connected to the air supply duct.

[0016] In a preferred embodiment of the present invention, the air supply port is connected to an air purification device, and the air purification device is connected to a refrigerator.

[0017] In a preferred embodiment of the present invention, the number of the air outlets gradually increases from the head end to the tail end of the feeding shell.

[0018] In a preferred embodiment of the present invention, the position of the air supply port is not lower than the central axis of the loading shell.

[0019] The beneficial effects of the utility model are: it can effectively prevent materials from piling up at the end of the feeding shell, improve the feeding efficiency, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 work. Among them:

[0021] Figure 1 This is a schematic cross-sectional view of a preferred embodiment of a boiler feeding mechanism of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a preferred embodiment of a boiler feeding mechanism of the utility model. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-2 , the embodiments of the present utility model include:

[0025] A feeding mechanism for a boiler comprises a feeding shell 1, an auger shaft 2, an auger spiral blade 3, a rotary drive motor 4, an upper guide surface 5, a lower guide surface 6, a feed port 7, a discharge port 8, a discharge pipe 9, and an air cooling component.

[0026] The auger shaft can be rotatably set in the feeding shell, and its two ends are movably connected to the end face of the feeding shell through bearings. The auger spiral blades are wound around the auger shaft, and the rotary drive motor is connected to the auger shaft to drive the auger shaft and the auger spiral blades to rotate in the feeding shell for feeding.

[0027] The feed port and the discharge port are respectively arranged at the two ends of the loading shell, and the feed port is arranged at the upper part of the loading shell, and the discharge port is arranged at the lower part of the loading shell. A discharge pipe is arranged at the discharge port, and the upper guide surface and the lower guide surface are arranged in the loading shell above the discharge port. The upper guide surface of the arc structure is arranged on the inner wall of the upper part of the loading shell to guide the material downward to the discharge port. The lower guide surface of the arc structure is arranged on the inner wall of the lower part of the loading shell, and its lower end extends to the discharge port, so that the material in the loading shell can enter the discharge port to prevent the material from accumulating at the end of the loading shell.

[0028] Further preferably, the discharge pipe includes a curved portion and a straight portion connected to the curved portion.

[0029] Further preferably, the curvature of the upper material guiding surface is greater than the curvature of the lower material guiding surface.

[0030] Further preferably, the feeding shell, the upper material guiding surface and the lower material guiding surface are an integrated structure.

[0031] The air cooling component includes an air supply port 10, an air supply duct 11, a return air port 12, and a refrigerator. A plurality of air supply ports are arranged obliquely on the upper part of the loading shell so that the air supply port faces the end of the loading shell or the connection position with the boiler. The air supply port is connected to the refrigerator through the air supply duct to transport cold air into the loading shell for cooling. The return air port is arranged on the end face or side wall of the head end of the loading shell to discharge the hot air in the loading shell.

[0032] Through the above method, the temperature inside the feeding shell can be effectively reduced, and the hot air in the boiler can be reduced from entering the feeding shell, thereby ensuring the normal feeding of materials and extending the service life of components.

[0033] Further preferably, filter screens are provided on the air supply and return air outlets to prevent material overflow or blockage.

[0034] Further preferably, the air supply port is connected to the air purification device through a pipeline to purify the exhausted gas, and the purified gas can be sent back to the refrigerator for cooling and then sent back to the loading shell for cooling.

[0035] Further preferably, the number of air outlets gradually increases from the head end to the tail end of the loading shell.

[0036] The beneficial effects of the feeding mechanism of the boiler of the utility model are: it can effectively prevent materials from piling up at the end of the feeding shell, improve the feeding efficiency, and extend the service life of the equipment.

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A boiler feeding mechanism, characterized in that: include: Feeding shell, auger shaft, auger spiral blade, rotary drive motor, upper guide surface, lower guide surface, feed port, discharge port, discharge pipe, air supply port, air supply pipe, return air port, The auger shaft is rotatably disposed in the feeding housing, the auger spiral blade is wound around the auger shaft, and the rotary drive motor is connected to the auger shaft to drive the auger shaft and the auger spiral blade to rotate in the feeding housing; The feed port and the discharge port are respectively arranged at both ends of the loading shell, and the feed port is arranged at the upper part of the loading shell, and the discharge port is arranged at the lower part of the loading shell. The discharge pipe is provided at the discharge port, and the upper guide surface and the lower guide surface are arranged in the loading shell above the discharge port. The upper guide surface of the arc structure is arranged on the inner wall of the upper part of the loading shell to guide the material downward to the discharge port. The lower guide surface of the arc structure is arranged on the inner wall of the lower part of the loading shell, and its lower end extends to the discharge port to guide the material into the discharge port. The upper part of the loading shell is obliquely provided with a plurality of air supply outlets, and the air supply outlets are toward the end of the loading shell. The air supply outlets are connected to the air supply ducts for conveying cooling gas to convey cold air into the loading shell for cooling. The return air outlet is arranged on the end face or side wall of the head end of the loading shell to discharge the hot air in the loading shell.

2. A boiler feeding mechanism according to claim 1, characterized in that: The two ends of the auger shaft are movably connected to the end surface of the feeding shell through bearings.

3. The boiler feeding mechanism according to claim 1, characterized in that: The discharge pipe includes a curved portion and a straight portion connected to the curved portion.

4. The boiler feeding mechanism according to claim 1, characterized in that: The curvature of the upper material guiding surface is greater than that of the lower material guiding surface.

5. The boiler feeding mechanism according to claim 1, characterized in that: The feeding shell, the upper material guiding surface and the lower material guiding surface are an integrated structure.

6. The boiler feeding mechanism according to claim 1, characterized in that: Filters are provided on the air supply port and the air return port.

7. The boiler feeding mechanism according to claim 1, characterized in that: The air supply duct is connected with a refrigerator.

8. The boiler feeding mechanism according to claim 1, characterized in that: The air supply port is connected to an air purification device, and the air purification device is connected to a refrigerator.

9. The boiler feeding mechanism according to claim 1, characterized in that: The number of the air outlets gradually increases from the head end to the tail end of the feeding shell.

10. The boiler feeding mechanism according to claim 1, characterized in that: The position of the air supply port is not lower than the central axis of the loading shell.

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