CN209991482U

CN209991482U - Feeding device of straw combustion machine

Info

Publication number: CN209991482U
Application number: CN201920895643.5U
Authority: CN
Inventors: 袁华; 钟清; 豆海峰
Original assignee: Chenzhou Huafeng Energy Technology Co Ltd
Current assignee: Chenzhou Huafeng Energy Technology Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-01-24
Anticipated expiration: 2029-06-14

Abstract

The utility model relates to a feeding device of a straw burner, which comprises a hopper, a feeding pipe, a feeding draught fan and a feeding auger; the feeding pipe is vertically arranged in the center of the top cover of the combustion furnace body; the feeding pipe is concentrically sleeved with a section of inner pipe with meshes from the upper end pipe opening. The utility model discloses under the negative pressure effect of feeding draught fan, will not burn completely the waste heat flue gas suction through taking the mesh inner tube and be equivalent to the annular interlayer air cavity of collection smoke box function, send to the burner afterburning again. Meanwhile, the technical effect of preheating the plant straw materials can be achieved. The utility model discloses set up the intermediate layer water jacket at inlet pipe lower extreme pipe shaft perisporium, can prevent high temperature in order to protect the inlet pipe.

Description

Feeding device of straw combustion machine

Technical Field

The utility model relates to a part on the straw combustor specifically is a feed arrangement who relates to the straw combustor.

Background

Currently, coal-fired processing equipment used by a plurality of original agricultural product processing enterprises faces the reforming requirement due to the requirement of environmental protection policy. Because the natural gas and the electric energy are utilized, the popularization and the use in a large area in certain areas are not practical due to the restriction of installation, processing cost and the like. The use of the biomass pellet fuel can better solve the requirements of user cost and environmental protection rectification at present.

The existing biomass particle burner can not use rice straws, corn straws and the like as fuels because the plant straws have more carbon ash after being burnt, and if the plant straws cannot be discharged out of a hearth in time, the biomass particle burner can block the hearth and cannot be used.

2019, 02 and 05.2019, chinese patent application publication No. CN109307260A discloses a plant straw particle burner, which comprises a burner body, a feeding device, a grate device and an ash discharge device; a hearth is formed in the combustion furnace body, and a fire-jet hole communicated with the hearth is formed in the side wall of the combustion furnace body; the feeding device is arranged outside the combustion furnace body, and one end of the feeding device is communicated with the hearth; the grate device is arranged in the hearth and positioned below the outlet end of the feeding device, and can bear plant straw particles to move towards the direction far away from the outlet end of the feeding device; the ash discharging device is arranged below the combustion furnace body, is communicated with the hearth and is used for discharging carbon ash in the hearth. The ash discharging device below the furnace body of the plant straw particle burner can timely discharge carbon ash in the hearth, so that the carbon ash is prevented from blocking the hearth, and the plant straw with more carbon ash can be used as fuel by the plant straw particle burner.

Because the feeding device used by the feeding device has the feeding pipe arranged on one side outside the combustion furnace body, the blower directly blows plant straw particles in the feeding pipe into the hearth, and the plant straw particles with lower temperature rapidly cool the hearth, so that the hearth is easy to combust insufficiently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a feed arrangement of straw combustor to alleviate the technical problem that uses plant straw to meet as fuel that exists among the prior art.

The technical scheme of the utility model is that: a feeding device of a straw combustion machine comprises a hopper, a feeding pipe, a feeding induced draft fan and a feeding auger; the feeding pipe is vertically arranged, the upper end of the feeding pipe is connected with the hopper, and the lower end of the feeding pipe is arranged in the center of the top cover of the combustion furnace body; the pipe orifice at the lower end of the feeding pipe is communicated with the feeding hole of the top cover of the combustion furnace body; the feeding pipe is concentrically sleeved with a section of inner pipe with meshes which is equal to more than 70% of the length of the feeding pipe from a pipe orifice at the upper end, an annular interlayer air cavity is formed between the outer wall of the inner pipe with meshes and the inner wall of the corresponding feeding pipe, and the upper end and the lower end of the annular interlayer air cavity are sealed; the lower end of the feed pipe is not sleeved by the mesh inner pipe, and the peripheral wall of the pipe body of the feed pipe is provided with an interlayer water jacket;

the feeding auger consists of an auger driving motor, a vortex screw and an auger mounting seat; the auger driving motor is fixed on the auger mounting seat, and an output shaft of the auger driving motor is connected with the vortex screw; the auger mounting frame is arranged above the positive center of the hopper, the vortex screw rod is inserted along the central axis of the upper end of the feeding pipe, the vortex screw rod section equivalent to the height of the hopper is exposed at the position of the upper end of the feeding pipe corresponding to the position of the accommodating cavity of the hopper, and the lowest end of the vortex screw rod is inserted to the position flush with the inner pipe with the mesh;

the feeding draught fan is installed on the outer side surface of the feeding pipe, the air inlet of the feeding draught fan is communicated with the annular interlayer air cavity, and the air outlet of the feeding draught fan is communicated with the fire nozzle through a feeding induced draft pipe.

Technical scheme more than combining, the utility model discloses the beneficial effect analysis of bringing is as follows:

the feeding auger arranged in the feeding device of the utility model utilizes the feeding conveyor belt to continuously feed and fill the feeding pipe and the auger to be continuously compacted and compacted, and can be matched with the two air-jet air boxes to realize the second dynamic sealing of the feeding pipe to the flue gas of the hearth; and a small amount of incomplete combustion waste heat flue gas in the furnace chamber permeates into the inlet pipe through the plant straw material clearance, and under the negative pressure effect of feeding draught fan, the incomplete combustion waste heat flue gas is sucked into the annular interlayer air cavity equivalent to the smoke collection box function through the inner pipe with meshes, and then is delivered to the burner for secondary combustion through the feeding draught fan and the feeding induced draft pipe. Meanwhile, a small amount of incomplete combustion waste heat smoke permeating into the feeding pipe through the gaps of the plant straw materials can also achieve the technical effect of preheating the plant straw materials. The utility model discloses set up the intermediate layer water jacket at inlet pipe lower extreme pipe shaft perisporium, can prevent high temperature in order to protect the inlet pipe.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic structural view of the straw burner of the present invention.

In the figure, 1, a hopper; 2, feeding a pipe; 3 feeding an induced draft fan; 4 a top cover of the combustion furnace body; 5, a top cover feeding hole; 6, an inner tube with meshes; 7, an annular interlayer air cavity; 8, an interlayer water jacket; 9 auger driving motor; 10, a vortex screw; 11 auger mounting seats; 12 feeding and air guiding pipes; 13 fire nozzles.

Detailed Description

The embodiments are described in detail below with reference to the attached drawing figures: this embodiment provides a plant straw particle combustion machine, please refer to fig. 1-2 in the drawings of the specification together.

As shown in figures 1 and 2, the feeding device of the straw combustion machine comprises a hopper 1, a feeding pipe 2, a feeding induced draft fan 3 and a feeding auger; the feeding pipe 2 is vertically arranged, the upper end of the feeding pipe 2 is connected with the hopper 1, and the lower end is arranged in the center of a top cover 4 of the combustion furnace body; the lower end pipe orifice of the feeding pipe 2 is communicated with a top cover feeding port 5 of the combustion furnace body; a section of inner pipe 6 with meshes, which is equal to more than 70% of the length of the pipe of the feeding pipe 2, is concentrically sleeved in the feeding pipe 2 from the pipe orifice at the upper end, an annular interlayer air cavity 7 is formed between the outer wall of the inner pipe 6 with meshes and the corresponding inner wall of the feeding pipe 2, and the upper end and the lower end of the annular interlayer air cavity 7 are sealed; the lower end of the feeding pipe 2 is not sleeved by the inner pipe 6 with meshes, and the peripheral wall of the pipe body of the feeding pipe is provided with an interlayer water jacket 8;

the feeding auger consists of an auger driving motor 9, a vortex screw 10 and an auger mounting seat 11; the packing auger driving motor 9 is fixed on the packing auger mounting seat 11, and the output shaft of the packing auger driving motor 9 is connected with the vortex screw 10; the auger mounting seat 11 is erected above the center of the hopper 1, the vortex screw 10 is inserted along the central axis of the upper end of the feeding pipe 2, a vortex screw 10 section equivalent to the height of the hopper 1 is exposed at the position of the upper end of the feeding pipe 2 corresponding to the containing cavity of the hopper 1, and the lowest end of the vortex screw 10 is inserted to be flush with the inner pipe 6 with meshes;

the feeding draught fan 3 is arranged on the outer side surface of the feeding pipe 2, the air inlet of the feeding draught fan 3 is communicated with the annular interlayer air cavity 7, and the air outlet of the feeding draught fan 3 is communicated with the fire nozzle 13 through a feeding induced draft pipe 12.

Further, a feeding conveyor 14 is arranged above the hopper 1 of the feeding device.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its various embodiments.

Claims

1. A feeding device of a straw combustion machine comprises a hopper (1), a feeding pipe (2), a feeding induced draft fan (3) and a feeding auger; the method is characterized in that: the feeding pipe (2) is vertically arranged, the upper end of the feeding pipe (2) is connected with the hopper (1), and the lower end of the feeding pipe is arranged in the center of a top cover (4) of the combustion furnace body; the lower end pipe orifice of the feeding pipe (2) is communicated with a top cover feeding port (5) of the combustion furnace body; the feeding pipe (2) is concentrically sleeved with a section of inner pipe (6) with meshes, which is equal to more than 70% of the pipe length of the feeding pipe (2), from the pipe orifice at the upper end, an annular interlayer air cavity (7) is formed between the outer wall of the inner pipe (6) with meshes and the corresponding inner wall of the feeding pipe (2), and the upper end and the lower end of the annular interlayer air cavity (7) are closed; the lower end of the feeding pipe (2) is not sleeved by the mesh inner pipe (6), and the peripheral wall of the pipe body of the feeding pipe is provided with an interlayer water jacket (8);

the feeding auger consists of an auger driving motor (9), a vortex screw (10) and an auger mounting seat (11); the packing auger driving motor (9) is fixed on the packing auger mounting seat (11), and the output shaft of the packing auger driving motor (9) is connected with the vortex screw (10); the auger mounting seat (11) is erected above the center of the hopper (1), the vortex screw (10) is inserted along the central axis of the upper end of the feeding pipe (2), a vortex screw (10) section equivalent to the height of the hopper (1) is exposed at the position, corresponding to the cavity of the hopper (1), of the upper end of the feeding pipe (2), and the lowest end of the vortex screw (10) is inserted to a position flush with the inner pipe (6) with the mesh;

the feeding draught fan (3) is installed on the outer side surface of the feeding pipe (2), the air inlet of the feeding draught fan (3) is communicated with the annular interlayer air cavity (7), and the air outlet of the feeding draught fan (3) is communicated with the fire nozzle (13) through the feeding induced air pipe (12).

2. The feeding device of the straw combustion engine as claimed in claim 1, wherein: a feeding conveyor belt (14) is arranged above the hopper (1) of the feeding device.