Fireproof biomass fuel feeding device

Abstract

The utility model discloses a biomass fuel fireproof feeding device which comprises a rotary feeding valve, a cylinder body, a material guiding box, an air knife, a first baffle and a second baffle, the material guiding box is arranged at the front end of the horizontally-arranged cylinder body, a material guiding plate extending downwards in an inclined mode is arranged at the bottom of the material guiding box, the air knife is arranged at the top of an inner cavity of the material guiding box, and the first baffle and the second baffle are arranged on the rotary feeding valve. The rotary feeding valve is arranged above the barrel, a discharging hole communicated with the rotary feeding valve is formed in the top of the barrel, the first baffle and the second baffle are arranged in the barrel in a front-back spaced mode and located on the two sides of the discharging hole, a connecting rod is arranged between the first baffle and the second baffle, and a fixing plate is arranged at the tail of the barrel. And a linear reciprocating driving mechanism connected with the second baffle plate is arranged on the fixed plate. By means of the mode, the biomass fuel fireproof feeding device achieves automatic feeding, a multi-protection structure is formed, and fireproof safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of feeding equipment, in particular to a fireproof feeding device for biomass fuel. Background Art

[0002] Commonly used biomass fuels include combustible materials such as straw, sugarcane bagasse, and rice husks from agricultural and forestry waste, as well as biomass pellets made from kitchen waste. These biomass fuels can be fed directly into furnaces for incineration to generate electricity or heat.

[0003] Biomass fuel can be burned in a grate-type incinerator. The biomass fuel is fed into the incinerator and burned on the grate. To control the burning rate of the biomass fuel, a feeding device is connected to the inlet of the incinerator to feed the biomass fuel into the incinerator. Because the biomass fuel is burning in the incinerator, the feeding process can easily cause the fire to spread within the incinerator, posing a certain safety hazard.

[0004] Prior art often uses fire doors to prevent the spread of fire from the incinerator to the feeding device. For example, utility model patent application number 2019213296473 discloses a double-screw feeding mechanism for a grate furnace. However, the fire door hinders the feeding of biomass fuel. Furthermore, fire doors require manual or monitoring equipment to detect the spread of fire before they can be closed, resulting in a lag effect and requiring improvement. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a fireproof feeding device for biomass fuel, which can automatically feed the incinerator and ensure fire safety.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a biomass fuel fireproof feeding device, including: a rotary feeding valve, a cylinder, a material guide box, an air knife, a first baffle and a second baffle, the material guide box is arranged at the front end of the horizontally placed cylinder, the bottom of the material guide box is provided with a material guide plate extending obliquely downward, the air knife is arranged at the top of the inner cavity of the material guide box, the rotary feeding valve is arranged above the cylinder, and the top of the cylinder is provided with a drop hole connected to the rotary feeding valve, the first baffle and the second baffle are arranged in the cylinder with a front-to-back interval and are located on both sides of the drop hole, a connecting rod is provided between the first baffle and the second baffle, and a fixed plate is provided at the tail of the cylinder, and a linear reciprocating drive mechanism connected to the second baffle is provided on the fixed plate.

[0007] In a preferred embodiment of the present invention, a connecting plate is vertically provided at the front end of the material guide box, and a feeding trough is provided in the connecting plate in front of the bottom of the material guide plate.

[0008] In a preferred embodiment of the present invention, the air outlet of the air knife points to the downward material guide plate.

[0009] In a preferred embodiment of the present invention, a hopper is provided on the top of the rotary feeding valve.

[0010] In a preferred embodiment of the present invention, the linear reciprocating drive mechanism adopts a pneumatic cylinder or a hydraulic cylinder.

[0011] In a preferred embodiment of the present invention, a rearward extending baffle sleeve is concentrically provided on the back edge of the second baffle.

[0012] In a preferred embodiment of the present invention, the length of the stop sleeve is not less than the diameter of the blanking hole, and when the second baffle moves to the front end of the cylinder under the drive of the linear reciprocating drive mechanism, the stop sleeve is located below the blanking hole.

[0013] The beneficial effects of the present invention are as follows: the present invention points out a fireproof feeding device for biomass fuel, which intermittently feeds the biomass fuel to the cylinder through the drop hole through the rotation of the rotary feeding valve, and then feeds the biomass fuel in the cylinder to the guide box through the forward movement of the first baffle and the second baffle, so that the biomass fuel enters the incinerator along the guide plate, realizing automatic feeding, and using an air knife to form an air wall, which can not only blow the biomass fuel on the guide plate into the incinerator, but also avoid the problem of the fire in the incinerator spreading to the guide box, and can also use the first baffle and the rotary feeding valve to alternately block, forming a multiple protection structure, which greatly improves fire safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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:

[0015] Figure 1 This is a structural diagram of a preferred embodiment of a biomass fuel fireproof feeding device of the present utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure after the second baffle moves forward. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1~Figure 2 , the embodiments of the present utility model include:

[0019] like Figure 1 The biomass fuel fireproof feeding device shown includes: a rotary feeding valve 2, a cylinder 1, a material guide box 8, an air knife 9, a first baffle 11 and a second baffle 12. The material guide box 8 is arranged at the front end of the horizontally placed cylinder 1. The cylinder 1 and the material guide box 8 can be welded and fixed, and the structure is firm.

[0020] A rotary feeding valve 2 is positioned above the cylinder 1. A feeding hole 7 communicating with the rotary feeding valve 2 is provided at the top of the cylinder 1. The rotary feeding valve 2 can be an electric rotary feeding valve, automatically controlled by a PLC. The rotation of the rotary feeding valve 2 intermittently feeds the biomass fuel into the cylinder 1 through the feeding hole 7. A hopper 6 is provided at the top of the rotary feeding valve 2. The hopper 6 can temporarily store granular or powdered biomass fuel and feed downwards as the rotary feeding valve 2 rotates.

[0021] The first and second baffles 11, 12 are spaced apart in front of and behind each other within the cylinder 1, located on either side of the blanking hole 7. A connecting rod 13 is provided between the first and second baffles 11, 12 to connect and synchronize the two. A fixed plate 4 is located at the rear of the cylinder 1. This fixed plate houses a linear reciprocating drive mechanism 5, which is connected to the second baffle and drives the second and first baffles 12 and 11 in forward and backward motion. The fixed plate 4 can be secured to the rear of the cylinder 1 with screws, making it easy to remove.

[0022] In this embodiment, the linear reciprocating drive mechanism 5 adopts a cylinder or a hydraulic cylinder, and can be automatically extended and retracted by using a PLC. A guide plate 10 extending obliquely downward is provided at the bottom of the guide box 8. By moving the first baffle 11 and the second baffle 12 forward, the guide plate 10 can be automatically extended and retracted. Figure 2 As shown, the biomass fuel in the cylinder 1 is fed to the guide box 8, so that the biomass fuel enters the incinerator along the guide plate 10, realizing automatic feeding.

[0023] A connecting plate 14 is vertically provided at the front end of the guide box 8, which is connected to the feed port of the incinerator through the connecting plate 14. A feed trough 15 is provided in the connecting plate 14 in front of the bottom of the guide plate 10. The feed trough 15 is positioned low, which can ensure that the biomass fuel on the guide plate 10 enters the incinerator through the feed trough 15, and can also prevent the fire in the incinerator from spreading to the guide box 8.

[0024] The air knife 9 is set at the top of the inner cavity of the material guide box 8. In this embodiment, the air outlet of the air knife 9 points to the material guide plate 10 below. The air knife 9 is externally connected to a compressed air pipeline, and forms an air wall after spraying downward. The air flow is reflected by the inclined surface of the material guide plate 10, which can not only blow the biomass fuel on the material guide plate 10 into the incinerator, but also prevent the fire in the incinerator from spreading to the material guide box 8 through the forward movement of the air flow.

[0025] In this embodiment, a rearward-extending baffle sleeve 3 is concentrically arranged on the back edge of the second baffle 12. The length of the baffle sleeve 3 is not less than the diameter of the drop hole 7. When the second baffle 12 moves to the front end of the cylinder 1 under the drive of the linear reciprocating drive mechanism 5, the baffle sleeve 3 is located below the drop hole 7, thereby achieving the closure of the drop hole 7, which can not only improve the fire prevention effect, but also prevent the residual biomass fuel in the drop hole 7 from entering the space behind the second baffle 12.

[0026] like Figure 1 As shown, at this time, the second baffle 12 and the first baffle 11 are located in the cylinder 1, preventing the fire from entering the cylinder 1. Figure 2 As shown, during the forward movement of the second baffle 12 and the first baffle 11, the baffle sleeve 3 blocks the drop hole 7, preventing the fire from entering the rotary feeding valve 2, thus achieving multiple fire barriers. Further blocking can be achieved by pausing the rotation of the rotary feeding valve 2.

[0027] In summary, the fireproof feeding device for biomass fuel disclosed in the present invention can automatically feed biomass fuel to an incinerator and prevent the fire in the incinerator from spreading to the feed box and the rotary feeding valve, thereby improving fire safety.

[0028] The above are merely embodiments of the present invention and are not intended to 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 biomass fuel fireproof feeding device, characterized in that: include: A rotary feeding valve, a cylinder, a material guide box, an air knife, a first baffle and a second baffle, the material guide box is arranged at the front end of the horizontally placed cylinder, a material guide plate extending obliquely downward is arranged at the bottom of the material guide box, the air knife is arranged at the top of the inner cavity of the material guide box, the rotary feeding valve is arranged above the cylinder, and a drop hole connected to the rotary feeding valve is arranged at the top of the cylinder. The first baffle and the second baffle are arranged in the cylinder with a front-to-back interval and are located on both sides of the drop hole. A connecting rod is arranged between the first baffle and the second baffle, and a fixed plate is provided at the tail of the cylinder, and a linear reciprocating drive mechanism connected to the second baffle is provided on the fixed plate.

2. The biomass fuel fireproof feeding device according to claim 1, characterized in that: A connecting plate is vertically arranged at the front end of the material guide box, and a feeding trough is arranged in the connecting plate in front of the bottom of the material guide plate.

3. The fireproof feeding device for biomass fuel according to claim 1, characterized in that: The air outlet of the air knife points to the material guide plate below.

4. The fireproof feeding device for biomass fuel according to claim 1, characterized in that: A hopper is provided on the top of the rotary feeding valve.

5. The fireproof feeding device for biomass fuel according to claim 1, characterized in that: The linear reciprocating drive mechanism adopts an air cylinder or a hydraulic cylinder.

6. The biomass fuel fireproof feeding device according to claim 1, characterized in that: A rearward extending baffle sleeve is concentrically arranged on the back edge of the second baffle.

7. The fireproof feeding device for biomass fuel according to claim 6, characterized in that: The length of the stop sleeve is not less than the diameter of the blanking hole. When the second baffle moves to the front end of the cylinder under the drive of the linear reciprocating drive mechanism, the stop sleeve is located below the blanking hole.

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