Biomass fuel conveying device and biomass combustion system with same

Abstract

The utility model relates to a biomass fuel conveying device and a biomass combustion system with the same, and belongs to the technical field of biomass fuel conveying devices, the biomass fuel conveying device comprises a walking frame, a plurality of conveying rollers, a conveying belt, a conveying motor and a heating pipe, and the conveying rollers rotate on the walking frame at intervals; the conveying belt rolls outside the plurality of conveying rollers; the conveying motor is fixed to the walking frame and is in transmission connection with any conveying roller. The heating pipe is in an S shape, located on one side of the conveying rollers and fixed to the walking frame. And the conveyor belt corresponding to the upper parts of the plurality of conveying rollers is in sliding contact with the heating pipe. According to the biomass fuel drying device, the heating pipe is located on one side of the conveying rollers in an S shape and fixed to the walking frame, and the conveying belt corresponding to the upper portions of the conveying rollers is in sliding contact with the heating pipe, so that when the conveying belt conveys biomass fuel, the biomass fuel can be dried, the viscidity of the biomass fuel such as high-sugar crop straw and pomace is reduced, and the biomass fuel drying effect is improved. And the feeding continuity and stability are ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass fuel conveying devices, and in particular to a biomass fuel conveying device. Background Technology

[0002] When biomass fuel is used as fuel for gasification furnaces, the moisture content of the biomass fuel needs to be controlled below 30%. However, directly collected biomass fuels, such as some crop straws and fruit pomace, not only have a moisture content as high as 30% to 70%, but also a relatively high sugar content. At room temperature, the high humidity and strong viscosity make them prone to clumping and sticking together, resulting in uneven feeding and even clogging of the feeding channel. In addition, in the cold winter, low temperatures may cause some components of the biomass feeding system to freeze or frost, affecting the normal transportation and feeding of materials.

[0003] However, current biomass boiler feeding systems mostly focus on automatically controlling the feeding speed and amount, without paying attention to or having effective solutions to the aforementioned problems that may occur in the biomass fuel conveying device within the feeding unit.

[0004] Therefore, how to design a biomass fuel conveying device that is not prone to clumping or clogging and has continuous and uniform feeding, as well as a biomass combustion system with such a device, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This utility model provides a biomass fuel conveying device, which solves the technical problems of uneven feeding, easy clumping, and easy clogging in existing biomass fuel conveying devices.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a biomass fuel conveying device, comprising: a walking frame, multiple conveying rollers, a conveyor belt, a conveying motor, and a heating pipe.

[0007] Multiple conveyor rollers rotate at intervals on the traveling frame; the conveyor belt rolls outside the multiple conveyor rollers; the conveyor motor is fixed on the traveling frame and is connected to any one of the conveyor rollers to drive the conveyor belt to roll; the heating tube is S-shaped and located on one side of the multiple conveyor rollers and is fixed on the traveling frame; the conveyor belt above the multiple conveyor rollers slides in contact with the heating tube to heat the biomass fuel transported on the conveyor belt.

[0008] The beneficial effects of this utility model are: it improves the traditional biomass fuel conveying device by using an S-shaped heating tube located on one side of multiple conveyor rollers and fixed on the walking frame. Since the conveyor belt above the corresponding multiple conveyor rollers slides in contact with the heating tube, it can dry the biomass fuel while the conveyor belt is conveying the biomass fuel, reduce the stickiness of biomass fuels such as high-sugar crop straw and fruit pomace, ensure the continuity and stability of feeding, and prevent the adverse effects of low temperature such as freezing and frost.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the walking frame includes a triangular support frame and multiple walking wheels, which rotate at intervals at the bottom end of the support frame; multiple conveying rollers rotate at intervals on the support frame along the inclined direction of the support frame; the conveying motor and the heating tube are both fixed on the support frame.

[0011] Furthermore, it also includes a protective cover, the open end of which is arranged downwards and covers both sides of the conveyor belt. The open end of the protective cover is fixed on the support frame and both ends corresponding to the conveying direction of the conveyor belt are open.

[0012] The further beneficial effect of adopting the above is that by using the open end of the protective cover to cover the conveyor belt and fix it to the support frame, dust or impurities can be prevented from falling onto the biomass fuel being conveyed on the conveyor belt.

[0013] Furthermore, it also includes a blower, the air outlet of which is connected to the upper part of the opening below the protective cover.

[0014] The further beneficial effect of adopting the above is that by connecting the air outlet of the blower with the upper part of the opening below the protective cover, the gas emitted by the heating and volatilization of biomass fuel can be blown out, thereby improving the drying effect of biomass fuel.

[0015] Furthermore, it also includes a feeding hopper, which is fixed on the support frame and its feeding port is located above the conveyor belt.

[0016] Additionally, a biomass combustion system is provided, comprising a biomass boiler, an induced draft fan, a chimney, a gas-liquid heat exchanger, a circulating pump, and the aforementioned biomass fuel conveying device.

[0017] The air inlet of the induced draft fan is connected to the exhaust gas outlet of the biomass boiler; the air inlet of the chimney is connected to the exhaust gas outlet of the induced draft fan; the gas-liquid heat exchanger is fixed in the middle of the chimney and its hot water outlet is connected to the water inlet of the heating pipe; the water inlet of the circulating pump is connected to the water outlet of the heating pipe and its water outlet is connected to the cold water inlet of the gas-liquid heat exchanger.

[0018] The beneficial effects of this utility model are: by using the waste gas generated by the biomass boiler to pass into the heating pipe, the waste heat of the waste gas from the biomass fuel combustion can be effectively utilized, and the temperature of the waste gas can be significantly reduced, thus protecting the ecological environment.

[0019] Furthermore, it also includes a three-way valve, the inlet of which is connected to the outlet of the circulating pump and its first outlet is connected to the cold water inlet of the gas-liquid heat exchanger, and its second outlet is connected to the connecting pipe between the inlet of the heating pipe and the hot water outlet of the gas-liquid heat exchanger. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a biomass fuel conveying device according to the present invention;

[0021] Figure 2 for Figure 1 A magnified structural diagram of point A.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Walking frame, 11. Support frame, 12. Walking wheels, 2. Conveyor roller, 3. Conveyor belt, 4. Conveyor motor, 5. Heating tube, 6. Protective cover, 7. Blower, 8. Feed hopper, 9. Biomass boiler, 10. Exhaust fan, 13. Chimney, 14. Gas-liquid heat exchanger, 15. Circulating pump, 16. Three-way valve. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] like Figure 2 As shown, a biomass fuel conveying device includes: a walking frame 1, multiple conveyor rollers 2, a conveyor belt 3, a conveyor motor 4, and a heating tube 5.

[0026] Multiple conveyor rollers 2 rotate at intervals on the traveling frame 1; a conveyor belt 3 rolls outside the multiple conveyor rollers 2; a conveyor motor 4 is fixed on the traveling frame 1 and is connected to any one of the conveyor rollers 2 to drive the conveyor belt 3 to roll; a heating tube 5 is S-shaped and located on one side of the multiple conveyor rollers 2 and is fixed on the traveling frame 1; the conveyor belt 3 above the multiple conveyor rollers 2 slides in contact with the heating tube 5 to heat the biomass fuel transported on the conveyor belt 3.

[0027] like Figure 2As shown, in some specific embodiments, the walking frame 1 may include a triangular support frame 11 and multiple walking wheels 12, with the multiple walking wheels 12 rotating at intervals at the bottom end of the support frame 11; multiple conveying rollers 2 rotating at intervals on the support frame 11 along the inclined direction of the support frame 11; and the conveying motor 4 and the heating tube 5 are both fixed on the support frame 11.

[0028] like Figure 2 As shown, in some specific embodiments, a protective cover 6 may also be included. The open end of the protective cover 6 is arranged downward and covers both sides of the conveyor belt 3. The open end of the protective cover 6 is fixed on the support frame 11 and both ends corresponding to the conveying direction of the conveyor belt 3 are open.

[0029] like Figure 2 As shown, in some specific embodiments, a blower 7 may also be included, with the air outlet of the blower 7 connected to the upper part of the opening below the protective cover 6.

[0030] like Figure 2 As shown, in some specific embodiments, a feeding hopper 8 may also be included, which is fixed on the support frame 11 and its feeding port is located above the conveyor belt 3.

[0031] In addition, such as Figure 1 As shown, a biomass combustion system is provided, including a biomass boiler 9, an induced draft fan 10, a chimney 13, a gas-liquid heat exchanger 14, a circulating pump 15, and a biomass fuel conveying device. The air inlet of the induced draft fan 10 is connected to the exhaust gas outlet of the biomass boiler 9; the air inlet of the chimney 13 is connected to the exhaust gas outlet of the induced draft fan 10; the gas-liquid heat exchanger 14 is fixed in the middle of the chimney 13 and its hot water outlet is connected to the water inlet of the heating pipe 5; the water inlet of the circulating pump 15 is connected to the water outlet of the heating pipe 5 and its outlet is connected to the cold water inlet of the gas-liquid heat exchanger 14.

[0032] like Figure 1 As shown, in some specific embodiments, a three-way valve 16 may also be included. The inlet of the three-way valve 16 is connected to the outlet of the circulating pump 15, and its first outlet is connected to the cold water inlet of the gas-liquid heat exchanger 14. Its second outlet is connected to the connecting pipe between the inlet of the heating pipe 5 and the hot water outlet of the gas-liquid heat exchanger 14.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A biomass fuel conveying device, characterized in that, include: Walking frame (1) Multiple conveyor rollers (2) rotate at intervals on the traveling frame (1); Conveyor belt (3), which rolls outside of the plurality of conveyor rollers (2); A conveyor motor (4) is fixed on the walking frame (1) and is connected to any of the conveyor rollers (2) to drive the conveyor belt (3) to roll. Heating tube (5), which is S-shaped and located on one side of multiple conveyor rollers (2) and fixed on the walking frame (1); the conveyor belt (3) above the multiple conveyor rollers (2) slides in contact with the heating tube (5) to heat the biomass fuel transported on the conveyor belt (3).

2. The biomass fuel conveying device according to claim 1, characterized in that, The walking frame (1) includes a triangular support frame (11) and multiple walking wheels (12), with the multiple walking wheels (12) rotating at intervals at the bottom end of the support frame (11); multiple conveying rollers (2) rotating at intervals along the inclined direction of the support frame (11) on the support frame (11); the conveying motor (4) and the heating tube (5) are both fixed on the support frame (11).

3. The biomass fuel conveying device according to claim 2, characterized in that, It also includes a protective cover (6), the open end of which is arranged downward and covers both sides of the conveyor belt (3). The open end of the protective cover (6) is fixed on the support frame (11) and both ends corresponding to the conveying direction of the conveyor belt (3) are open.

4. A biomass fuel conveying device according to claim 3, characterized in that, It also includes a blower (7), the air outlet of which is connected to the upper part of the opening below the protective cover (6).

5. A biomass fuel conveying device according to claim 2, characterized in that, It also includes a feeding hopper (8), which is fixed on the support frame (11) and its feeding port is located above the conveyor belt (3).

6. A biomass combustion system, characterized in that, Includes a biomass boiler (9), an induced draft fan (10), a chimney (13), a gas-liquid heat exchanger (14), a circulating pump (15), and a biomass fuel conveying device as described in any one of claims 1-5. The air inlet of the induced draft fan (10) is connected to the exhaust gas outlet of the biomass boiler (9); the air inlet of the chimney (13) is connected to the exhaust gas outlet of the induced draft fan (10); the gas-liquid heat exchanger (14) is fixed in the middle of the chimney (13) and its hot water outlet is connected to the water inlet of the heating pipe (5); the water inlet of the circulating pump (15) is connected to the water outlet of the heating pipe (5) and its water outlet is connected to the cold water inlet of the gas-liquid heat exchanger (14).

7. A biomass combustion system according to claim 6, characterized in that, It also includes a three-way valve (16), the inlet of which is connected to the outlet of the circulating pump (15) and its first outlet is connected to the cold water inlet of the gas-liquid heat exchanger (14), and its second outlet is connected to the connecting pipe between the inlet of the heating pipe (5) and the hot water outlet of the gas-liquid heat exchanger (14).

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