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Material stuffing type spiral feeder

A screw feeder, plug-type technology, which is applied in the direction of fuel supply, combustion method, block/powder supply/distribution, etc. problem, to prevent the heat transfer to the screw feeder, prevent the phenomenon of tempering, and avoid the effect of fuel

Inactive Publication Date: 2017-03-22
WUXI XIDONG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a plug-type screw feeder, which can solve the problem that the existing screw feeder often cannot fully compress the fuel, thereby failing to form an effective plug, and the discharge of the feeder. The mouth is usually directly connected to the boiler furnace, which may easily cause the overheating of the feeder shell, affect the service life of the equipment, and even ignite the fuel inside the shell.

Method used

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Experimental program
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specific Embodiment approach 1

[0013] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, a plug-type screw feeder in this embodiment includes a casing 1, a screw shaft 2 and a reduction motor 3, the screw shaft 2 is horizontally arranged in the casing 1, and the rear end of the screw shaft 2 is controlled by the machine The rear side wall of the shell 1 is pierced and connected with the shell 1 in rotation, the geared motor 3 can drive the screw shaft 2 to rotate, the front end of the shell 1 is provided with a discharge port, and the top of the shell is provided with a feed port 4 for cooling The jacket 5 is fixed on the outside of the discharge port and coaxially arranged with the screw shaft 2. The front end of the screw shaft 2 extends out of the discharge port and enters the cooling jacket 5. The screw shaft 2 inside the cooling jacket 5 is the optical axis. The casing 1 between the feed port 4 and the discharge port is a conical shell, which is coaxially arrang...

specific Embodiment approach 2

[0014] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment, the cooling jacket 5 of this embodiment comprises inner pipe 51, outer pipe 52 and two end flanges, two end flanges are fixedly connected to the two ends of inner pipe 51 respectively, and outer pipe 52 covers It is arranged on the outside of the inner tube 51 and its two ends are fixedly connected to the two end flanges respectively. A closed hollow cavity 53 is formed between the outer tube 52 and the inner tube 51. The side wall of the outer tube 52 is fixedly connected with the The water inlet 54 and the water outlet 55 connected to the hollow cavity 53, the cooling jacket 5 is fixedly connected with the flange at the discharge port of the casing 1 through one of the end flanges, and connected with the existing boiler through the other flange. connect. During use, the external water inlet pipe is communicated with the water inlet 54, and then the external water outlet pi...

specific Embodiment approach 3

[0015] Embodiment 3: In this embodiment, the inner diameter of the inner tube 51 is equal to the inner diameter of the outlet. Such a design is conducive to the formation of a dense plug of fuel in the inner tube 51 . Other components and connections are the same as those in the second embodiment.

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Abstract

The invention provides a material stuffing type spiral feeder. The material stuffing type spiral feeder can solve the problems that an existing spiral feeder generally cannot compress fuel materials sufficiently, consequently, effective material stuffing cannot be formed, a discharging port of the feeder is generally connected with a boiler hearth directly, a shell of the feeder becomes too hot easily, the service life of the feeder is affected, and even the fuel materials in the shell are ignited. A spiral shaft is horizontally arranged, a cooling jacket is fixedly connected to the outer side of a discharging port and is coaxially arranged with the spiral shaft, and the front end of the spiral shaft extends out of the discharging port and enters the cooling jacket. The spiral shaft located in the cooling jacket is a polished shaft, a feeder shell located between a feeding port and the discharging port is a conical shell, the conical shell and the spiral shaft are coaxially arranged, the diameter of the cross section of the conical shell is gradually reduced in the conveying direction, the diameter of the cross section of a center shaft of the spiral shaft is gradually reduced in the conveying direction, and the external diameter of each spiral blade on the spiral shaft located in the conical shell is gradually reduced in the conveying direction.

Description

technical field [0001] The invention relates to the field of screw feeders, in particular to the field of feeder equipment for biomass fuel boilers, in particular to a plug-type screw feeder. Background technique [0002] Biomass fuel is a new type of clean fuel, which is mainly agricultural and forestry waste, such as straw, sawdust, rice bran, etc. Biomass fuel is generally fed into the furnace of a biomass boiler through a screw feeder for combustion. Due to the low ignition point and loose texture of biomass fuel, the high-temperature flue gas or combustible gas in the furnace can be discharged through the screw feeder. The gap between the feeder and the biomass fuel enters the feeder and sprays outward, forming a flashback, which may cause a fire in the slightest, or cause an explosion in the severest case. In order to prevent the occurrence of tempering phenomenon, the conventional method is to make the fuel form a plug at the outlet of the feeder to block the leakage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K3/00
CPCF23K3/00
Inventor 袁绍生诸家敏
Owner WUXI XIDONG ENERGY TECH