Biomass particle drying device

Abstract

The utility model discloses a biomass particle drying device which comprises a drying box and an auger fixedly connected to the drying box and further comprises a filter screen, a flow equalizing hopper, an air heater, an induced draft fan and a discharging hopper. The filter screen is obliquely and fixedly connected into the drying box; the lower end of the flow equalizing hopper is communicated with the upper part of the drying box and is close to the upper end of the filter screen; the air heater communicates with the lower portion of the side wall of the side, connected with the drying box, of the flow equalizing hopper. The induced draft fan is arranged at the upper part of the other drying box side wall opposite to the hot-air blower; the discharging hopper is arranged on the side wall of the drying box close to the lower end of the filter screen. The biomass particle drying device has the advantages that biomass particles can be laid on the filter screen, hot air can dry the biomass particles laid on the filter screen to the maximum extent, drying is more uniform, and the quality of the biomass particles is better.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass fuel production equipment, and in particular to a biomass pellet drying device. Background Technology

[0002] Biomass pellets are a type of renewable energy produced from biomass, such as plant, animal, or microbial organisms, through processing or conversion.

[0003] The production of biomass pellets requires drying the fuel to ensure complete combustion.

[0004] Existing biomass pellet drying equipment has poor drying effect on organisms and is prone to uneven drying, which affects the quality of biomass pellets. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a biomass pellet drying device that can uniformly dry biomass pellets.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A biomass pellet drying device includes a drying chamber and an auger fixed to the drying chamber.

[0008] It also includes filters, flow equalization hoppers, hot air blowers, induced draft fans, and discharge hoppers;

[0009] The filter screen is tilted and fixed inside the drying oven;

[0010] The upper end of the equalizing hopper is connected to the auger outlet, and the lower end is connected to the upper part of the drying box and close to the upper end of the filter screen.

[0011] The hot air blower is connected to the lower part of the side wall on the side where the flow equalization hopper connects to the drying box;

[0012] The induced draft fan is located on the upper part of the side wall of the other drying chamber opposite to the hot air fan;

[0013] The discharge hopper is located on the side wall of the drying chamber near the lower end of the filter screen.

[0014] Furthermore, the equalization hopper includes a connecting cylinder and an equalization cylinder; the equalization cylinder is fixedly connected to the lower end of the connecting cylinder; the upper end of the equalization cylinder is circular and matches the connecting cylinder, and the lower end is rectangular to make the material evenly distributed.

[0015] Furthermore, the filter screen is a strip-shaped filter screen with several holes opened in the same direction.

[0016] Furthermore, the discharge hopper is equipped with a baffle plate.

[0017] Furthermore, the lower part of the drying chamber is constructed with a conical bottom; a material collection pipe is provided at the lower end of the conical bottom.

[0018] Furthermore, the collecting pipe is equipped with a valve.

[0019] Furthermore, a frame is fixedly connected to the lower end of the drying oven.

[0020] The beneficial effects of this utility model are:

[0021] The inclined filter screen facilitates material movement, and hot air can pass through the filter screen to dry the biomass pellets. The equalization hopper can evenly distribute the biomass pellets entering through the auger and onto the surface of the filter screen. The hot air blower is located at the bottom of the drying chamber and on the lower part of the upper side of the filter screen, while the induced draft fan is located on the upper part of the drying chamber on the opposite side. This arrangement effectively allows the hot air to dry the biomass pellets spread on the filter screen to the greatest extent, resulting in more uniform drying and better quality biomass pellets. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the filter screen structure;

[0024] Figure 3 This is a schematic diagram of the flow equalization bucket.

[0025] In the picture,

[0026] 1-Drying oven, 2-Filter screen, 3-Screw conveyor, 4-Flow equalization hopper, 5-Hot air blower, 6-Exhaust fan, 7-Discharge hopper, 8-Insulator plate, 9-Frame;

[0027] 11-Conical bottom, 12-Collection pipe, 13-Valve;

[0028] 21-holes;

[0029] 41-Connecting cylinder, evenly distributed cylinder. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Reference Figure 1-3As shown, a biomass pellet drying device includes a drying chamber 1 and an auger 3 fixedly connected to the drying chamber 1, as well as a filter screen 2, a flow equalization hopper 4, a hot air blower 5, an induced draft fan 6, and a discharge hopper 7. The filter screen 2 is inclined and fixedly connected inside the drying chamber 1. The upper end of the flow equalization hopper 4 is connected to the discharge port of the auger 3, and the lower end is connected to the upper part of the drying chamber 1 and close to the upper end of the filter screen 2. The hot air blower 5 is connected to the lower part of the side wall on the side where the flow equalization hopper 4 is connected to the drying chamber 1. The induced draft fan 6 is located on the upper part of the other side wall of the drying chamber 1 opposite to the hot air blower 5. The discharge hopper 7 is located on the side wall of the drying chamber 1 close to the lower end of the filter screen 2.

[0032] It should be noted that the drying chamber 1 is the existing shell used to facilitate the installation of other components; the auger 3 can transport the processed biomass pellets into the auger 3; the inclined filter screen 2 facilitates material movement, and hot air can pass through the filter screen 2 to dry the biomass pellets on it. It should be noted that the pore size of the filter screen 2 should be smaller than the pore size of the biomass pellets to prevent the biomass pellets from falling into the lower end of the filter screen 2 through the pores; the equalizing hopper 4 can evenly distribute the biomass pellets entering through the auger 3 and allow them to enter the upper surface of the filter screen 2; the hot air fan 5 is located at the lower end of the drying chamber 1 and is located on the lower part of one side of the upper end of the filter screen 2, while the induced draft fan 6 is located on the upper part of the drying chamber 1 on the other side. This arrangement effectively allows the hot air to dry the biomass pellets spread on the filter screen 2 to the greatest extent, resulting in more uniform drying; the discharge hopper 7 is used to collect the biomass pellets; the discharge hopper 7 is rectangular in shape to facilitate the flow of biomass pellets.

[0033] Specifically, the equalization hopper 4 includes a connecting cylinder 41 and an equalization cylinder 42; the equalization cylinder 42 is fixed to the lower end of the connecting cylinder 41; the upper end of the equalization cylinder 42 is circular, matching the connecting cylinder 41, and the lower end is rectangular, designed to distribute the material evenly. The connecting cylinder 41 facilitates the entry of material; the equalization cylinder 42, with its circular upper end and rectangular rear end, effectively allows the biomass pellets to be evenly laid out and enter the filter screen 2.

[0034] Specifically, the filter screen 2 is a strip-shaped filter screen with a plurality of holes 21 opened in the same direction. The strip-shaped filter screen facilitates the movement of biomass pellets, and the tilt angle of the filter screen 2 needs to ensure that the biomass pellets can roll easily on the filter screen 2. The setting angle in this application is 60°.

[0035] In order to control the amount of biomass pellets flowing out of the drying chamber 1, a baffle plate 8 is provided on the discharge hopper 7.

[0036] To facilitate the collection of fine biomass particles that leak through the perforations 21 of the filter screen 2, the lower part of the drying chamber 1 is constructed with a conical bottom 11; a collection pipe 12 is provided at the lower end of the conical bottom 11. A valve 13 is provided on the collection pipe 12 to control its opening and closing, facilitating the periodic collection of fine biomass particles, such as microgranules. A frame 9 is fixedly connected to the lower end of the drying chamber 1, which can elevate and fix the drying chamber 1 to ensure the collection of fine biomass particles.

[0037] The working principle of this utility model:

[0038] During operation, the biomass pellets to be dried are conveyed from the previous process to the upper part of the drying chamber 1 via the auger 3. Through the setting of the equalization hopper 4, the biomass pellets can be evenly spread and flow into the filter screen 2 from the rectangular outlet of the equalization hopper 4. The hot air blower 5 can blow hot air to dry the biomass pellets on the filter screen 2 and remove excess moisture. The power of the hot air blower can be adjusted to preset the drying effect. The induced draft fan 6 is set on the upper part of the drying chamber 1 on the other side. This setting effectively allows the hot air to dry the biomass pellets spread on the filter screen 2 to the greatest extent, making the drying more uniform. The dried biomass pellets can flow out from the discharge hopper 7 and be collected, thus obtaining uniformly dried biomass pellets.

[0039] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A biomass pellet drying device, comprising a drying chamber (1) and an auger (3) fixedly connected to the drying chamber (1), characterized in that: It also includes a filter screen (2), a flow equalization hopper (4), a hot air blower (5), an induced draft fan (6), and a discharge hopper (7); The filter screen (2) is inclined and fixed inside the drying oven (1); The upper end of the equalizing hopper (4) is connected to the discharge port of the screw conveyor (3), and the lower end is connected to the upper part of the drying box (1) and close to the upper end of the filter screen (2); The hot air blower (5) is connected to the lower part of the side wall on the side where the equalization hopper (4) and the drying box (1) are connected; The induced draft fan (6) is located on the upper part of the side wall of another drying box (1) opposite to the hot air fan (5); The discharge hopper (7) is located on the side wall of the drying box (1) near the lower end of the filter screen (2).

2. The biomass particle drying apparatus according to claim 1, characterized by: The equalization hopper (4) includes a connecting cylinder (41) and an equalization cylinder (42); the equalization cylinder (42) is fixed to the lower end of the connecting cylinder (41); the upper end of the equalization cylinder (42) is circular and matches the connecting cylinder (41), and the lower end is rectangular to make the material evenly distributed.

3. The biomass particle drying apparatus according to claim 1, characterized by: The filter screen (2) is a strip-shaped filter screen with several holes (21) in the same direction.

4. The biomass particle drying apparatus according to claim 1, characterized by: The discharge hopper (7) is equipped with a baffle plate (8).

5. The biomass particle drying apparatus according to any one of claims 1 to 4, characterized in that: The lower part of the drying oven (1) has a conical bottom (11); the lower end of the conical bottom (11) is provided with a material collection pipe (12).

6. The biomass particle drying apparatus according to claim 5, characterized by: The collecting pipe (12) is equipped with a valve (13).

7. The biomass particle drying apparatus according to claim 5, characterized by: The lower end of the drying oven (1) is fixedly connected to a frame (9).

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