Feeding device

Abstract

The utility model provides a feeding device, which relates to the technical field of machinery manufacturing, and comprises a conical blanking hopper, an auger conveying cylinder and a conical distributing plate, the top of the conical blanking hopper is provided with a feed port, and the bottom of the conical blanking hopper is connected with the auger conveying cylinder; the bottom end of a spiral piece of the auger in the center of the auger conveying cylinder is close to the top surface of the conical material distributing plate. According to the technical scheme, the technical problem of how to realize uniform blanking of biomass fuel in the feeding process in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a feeding device. Background Art

[0002] Biomass can be used as fuel or industrial raw materials. It refers to biological or part of organic matter. It is the most widely existing substance on the earth. After treatment, biomass contains combustible elements, can be used as fuel for power generation, and has renewable characteristics. Biomass gasifier plays an important role in the conversion and recycling of biomass fuel, and the state of biomass in the gasifier is closely related to the feeding device. Utility Model Content

[0003] The purpose of the utility model is to provide a feeding device to solve the technical problem of how to achieve uniform feeding of biomass fuel through the feeding process in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] To achieve the above-mentioned purpose, the utility model provides a feeding device, including a conical dropping hopper, an auger conveying cylinder and a conical dividing plate. A feed port is arranged on the top of the conical dropping hopper, and the bottom of the conical dropping hopper is connected to the auger conveying cylinder. The bottom end of the spiral blade of the auger in the center of the auger conveying cylinder is close to the top surface of the conical dividing plate.

[0005] Optionally, a sealing cover plate is provided on the top of the conical drop hopper, and a feed port is provided on the cover plate.

[0006] Optionally, the upper side of the feed port is sealed and connected to a feed box, and the side of the feed box is connected to a feed pipe.

[0007] Optionally, a gas and dust discharge pipe is provided on the top of the feed box.

[0008] Optionally, a motor is fixed to the upper middle side of the cover plate, and the output shaft of the motor is connected to the central auger shaft of the auger conveying cylinder.

[0009] Optionally, a motor fixing bracket is provided on the cover plate, and the motor fixing bracket is fixedly connected to the side surface of the motor.

[0010] Optionally, the conical drop hopper is sealedly connected to the auger conveying cylinder.

[0011] Optionally, a peripheral plate is extended outward from the bottom edge of the conical dividing plate, a circle of threaded holes with even intervals are arranged on the peripheral plate, each of the threaded holes is connected to a screw extending downward, and a ceramic tube is sleeved on the periphery of the screw.

[0012] Optionally, an annular ring plate is provided at the lower end of the screw rod, corresponding to the threaded holes on the peripheral flat plate, a circle of through holes is provided on the annular ring plate, and each screw rod is connected to the annular ring plate through its corresponding through hole.

[0013] Optionally, two layers of annular ring plates are further arranged in the middle position of the screw, and the two layers of annular ring plates are arranged overlappingly. The screw is located on the upper and lower sides of the two layers of annular ring plates and an upper fastening nut and a lower fastening nut are respectively arranged. A ceramic tube is sleeved on the outer periphery of the screw between the upper fastening nut and the outer peripheral flat plate and between the lower fastening nut and the annular ring plate at the lower end of the screw.

[0014] The technical solution of the utility model may have the following beneficial effects:

[0015] The utility model provides a feeding device, in which the biomass fuel is scattered on the conical material distribution plate after passing through the conical material drop hopper and the auger conveying cylinder. Since the rotation speed of the auger in the auger conveying cylinder is constant, the material is evenly distributed on the conical material distribution plate through the spiral blade of the auger close to the conical material distribution plate, and falls into the gasification furnace toward the outer side of the conical material distribution plate, and the biomass fuel transported by the auger conveying cylinder is evenly transported into the gasification furnace. It can be seen that the feeding device of this scheme solves the technical problem of how to achieve uniform feeding of biomass fuel through the feeding process in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural schematic diagram of a feeding device according to an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of a feeding device according to one embodiment of the utility model.

[0019] In the figure: 1. Conical drop hopper; 2. Agitator conveying cylinder; 3. Conical dividing plate; 4. Feed box; 5. Motor; 6. Central agitator shaft; 7. Screw; 8. Feed pipe; 9. Gas and dust discharge pipe; 10. Motor fixing bracket; 11. Screw; 12. Ceramic tube; 13. Ring plate; 14. Cover plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0022] like Figure 1-2 As shown:

[0023] The utility model provides a feeding device, including a conical dropping hopper 1, an auger conveying cylinder 2 and a conical dividing plate 3. A feeding port is arranged on the top of the conical dropping hopper 1, and the bottom of the conical dropping hopper 1 is connected to the auger conveying cylinder 2. The bottom end of the spiral piece 7 of the auger at the center of the auger conveying cylinder 2 is close to the top surface of the conical dividing plate 3.

[0024] Specifically, the biomass fuel passes through the conical hopper 1 and the auger conveying cylinder 2 and is scattered on the conical distribution plate 3. Since the rotation speed of the auger in the auger conveying cylinder 2 is constant, the material is evenly scattered on the conical distribution plate 3 through the auger spiral blades 7 close to the conical distribution plate, and falls into the gasifier outward of the conical distribution plate 3, thereby evenly transporting the biomass fuel transported by the auger conveying cylinder 2 into the gasifier.

[0025] As an optional embodiment, a sealing cover plate 14 is provided on the top of the conical hopper 1, and a feed port is provided on the cover plate 14. The sealing cover plate 14 effectively isolates air from entering the conical hopper 1, and reduces the air content when the material enters the gasifier.

[0026] As an optional embodiment, the upper side of the feed port is sealed to a feed box 4, and the side of the feed box 4 is connected to a feed pipe 8. A feed pipe 8 is arranged on the right vertical wall of the feed box 4, which is connected to the pulverizer to transport the biomass fuel from the pulverizer into the feed box 4.

[0027] As an optional embodiment, a gas-dust discharge pipe 9 is provided on the top of the feed box 4. The gas-dust discharge pipe 9 is connected to the multi-bag expansion gas-dust filter. The fuel entering the feed box 4 falls into the conical drop hopper 1 by gravity, and the light dust is discharged into the multi-bag expansion gas-dust filter through the gas-dust discharge pipe 9 under the action of the dust of the pulverizer, so as to achieve gas-material separation, and create conditions for the fuel to enter the auger with low oxygen content and low dust content.

[0028] As an optional implementation, a motor 5 is fixed to the upper middle side of the cover plate 14 , and the output shaft of the motor 5 is connected to the central auger shaft 6 of the auger conveying cylinder 2 .

[0029] As an optional embodiment, a motor fixing bracket 10 is provided on the cover plate 14, and the motor fixing bracket 10 is fixedly connected to the side of the motor 5. The motor is fixed to the upper side of the cover plate 14 through the motor fixing bracket 10, and the motor output shaft is located in the conical drop hopper 1 and connected to the auger shaft 6. The auger is driven to rotate by the motor, and the oxygen content and dust content of the fuel are controlled by the conical drop hopper 1 and the auger, so as to improve the calorific value of the biomass gas entering the furnace.

[0030] As an optional embodiment, the conical drop hopper 1 is sealed and connected to the auger conveying cylinder 2. The auger conveying cylinder 2 is sealed and connected to the conical drop hopper 1 to control the oxygen content of the biomass fuel entering the furnace.

[0031] As an optional embodiment, the bottom edge of the conical distribution plate 3 extends outward to form an outer peripheral plate, and a circle of threaded holes evenly spaced are provided on the outer peripheral plate, each of which is connected to a screw 11 extending downward, and a ceramic tube 12 is sleeved on the outer periphery of the screw 11. The conical distribution plate 3 is designed with a plurality of screw holes on its circumference, and a designed number of screws 11 pass through the screw holes respectively, and nuts are screwed on the upper ends of the screws 11 and hung on the circumference of the conical distribution plate 3 along the radial circumference of the center of the gasifier furnace. Some of the screws 11 are connected to the sleeves suspended at the top of the furnace to fix the conical distribution plate 3 at a position 10 mm away from the bottom surface of the lowest spiral blade of the feeding auger, so that the fuel pushed by the spiral blade of the feeding auger is continuously scattered around the fence and evenly accumulated.

[0032] As an optional embodiment, an annular ring plate 13 is provided at the lower end of the screw rod 11, and a circle of through holes is provided on the annular ring plate 13 corresponding to the threaded holes on the peripheral flat plate, and each screw rod 11 is connected to the annular ring plate 13 through its corresponding through hole. The annular ring plate 13 is used to fix the lower end position of the screw rod and stabilize the central fence structure.

[0033] As an optional embodiment, two layers of annular ring plates 13 are also provided in the middle of the screw 11, and the two layers of annular ring plates 13 are overlapped. The screw 11 is provided with an upper fastening nut and a lower fastening nut on the upper and lower sides of the two layers of annular ring plates, respectively. A ceramic tube 12 is sleeved on the outer periphery of the screw 11 between the upper fastening nut and the peripheral flat plate, and between the lower fastening nut and the annular ring plate 13 at the lower end of the screw. In order to ensure the stability of the fence, an annular ring plate 13 is provided in the middle of the screw to stabilize the fence. The screw 11, the conical material distribution plate 3, the annular ring plate 13, and the ceramic tube 12 constitute a fence, which provides thermal working conditions for the furnace fire core.

[0034] When the technical solution is used for feeding, the fuel entering the feed box 4 falls into the conical hopper 1 due to gravity, and is discharged into the multi-bag expandable gas-dust filter through the gas-dust discharge pipe 9. The fuel with a large specific gravity is further deoxidized under the action of the agitator spiral blade 7 and scattered along the top of the conical dividing plate 3 to the periphery of the fence. The gas-material separation and spiral extrusion process are adopted to reduce the oxygen content of the fuel entering the furnace, so that the calorific value of the biomass gas after the thermochemical reaction is high. The fence structure provides structural conditions for the fire core to be hollow when the fuel is burned, thereby improving the thermal conditions.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A feeding device, characterized in that: It includes a conical drop hopper, an auger conveying cylinder and a conical dividing plate. A feed port is arranged on the top of the conical drop hopper, and the bottom of the conical drop hopper is connected to the auger conveying cylinder. The bottom end of the spiral piece of the auger at the center of the auger conveying cylinder is close to the top surface of the conical dividing plate.

2. The feeding device according to claim 1, characterized in that: A sealing cover plate is arranged on the top of the conical drop hopper, and a feed port is arranged on the cover plate.

3. The feeding device according to claim 2, characterized in that: The upper side of the feed port is sealed and connected to a feed box, and the side of the feed box is connected to a feed pipe.

4. The feeding device according to claim 3, characterized in that: A gas and dust discharge pipe is arranged on the top of the feed box.

5. The feeding device according to any one of claims 2 to 4, characterized in that: A motor is fixed on the upper middle side of the cover plate, and the output shaft of the motor is connected to the central auger shaft of the auger conveying cylinder.

6. The feeding device according to claim 5, characterized in that: The cover plate is provided with a motor fixing bracket, and the motor fixing bracket is fixedly connected to the side surface of the motor.

7. The feeding device according to claim 6, characterized in that: The conical drop hopper is sealed and connected to the auger conveying cylinder.

8. The feeding device according to claim 7, characterized in that: An outer peripheral plate extends outward from the bottom edge of the conical material dividing plate. A circle of threaded holes with uniform intervals is arranged on the outer peripheral plate. Each of the threaded holes is connected to a screw rod extending downward. A ceramic tube is sleeved on the outer periphery of the screw rod.

9. The feeding device according to claim 8, characterized in that: An annular ring plate is arranged at the lower end of the screw rod, corresponding to the threaded hole on the outer peripheral flat plate, and a circle of through holes is arranged on the annular ring plate, and each screw rod is connected to the annular ring plate through its corresponding through hole.

10. The feeding device according to claim 9, characterized in that: Two layers of annular ring plates are also arranged in the middle position of the screw, and the two layers of annular ring plates are overlapped. The screw is located on the upper and lower sides of the two layers of annular ring plates and an upper fastening nut and a lower fastening nut are respectively arranged. Ceramic tubes are sleeved on the outer periphery of the screw between the upper fastening nut and the outer peripheral flat plate and between the lower fastening nut and the annular ring plate at the lower end of the screw.

Images