MATERIAL STIRRING DEVICE FOR BIOMASS BIN

Abstract

This invention belongs to the field of biomass energy utilization at the large scale. A material stirring device for a biomass bin includes a transmission mechanism, a main stirring mechanism, and an auxiliary stirring mechanism. The main stirring mechanism includes a cylinder connected to the transmission mechanism. The outer wall of the cylinder is provided with a hollow stirring rod. The auxiliary stirring mechanism includes a rotating shaft vertically penetrating through the hollow stirring rod. Both ends of the rotating shaft are provided with stirring blades and the rotating shaft is connected to the transmission mechanism. That the stirring device is easily damaged due to too high density of the biomass material is overcome through the automatic conversion adjustment of the main and auxiliary stirring mechanisms. The continuous discharge efficiency of the biomass bin is improved by the organic integration of over and partial stirring.

Claims

1.-10. (canceled)

11. A material stirring device for a biomass bin comprising: a transmission mechanism; a main stirring mechanism; and an auxiliary stirring mechanism, wherein: the main stirring mechanism includes a cylinder connected to the transmission mechanism and having an outer wall, the outer wall of the cylinder is provided with a hollow stirring rod, the auxiliary stirring mechanism includes a rotating shaft vertically penetrating through the hollow stirring rod and having two ends, both ends of the rotating shaft are provided with stirring blades, and the rotating shaft is connected to the transmission mechanism.

12. The device of claim 11, wherein: the transmission mechanism includes an electromotor; the electromotor is connected to the main stirring mechanism; and the main stirring mechanism and the cylinder are in the same shaft.

13. The device of claim 11, wherein the main stirring mechanism and the cylinder are connected by spring catches.

14. The device of claim 13, wherein: each spring catch includes a hollow catch, comprising a spring with hemispherical balls on both ends of the spring; the cylinder comprises two holes therein used to locate the hemispherical balls; and a diameter of the holes is smaller than that of the hemispherical balls.

15. The device of claim 11, further comprising (i) a plurality of capstans fixed on the main stirring mechanism and (ii) a plurality of driven capstans fixed on the rotating shaft inside the hollow stirring rod, wherein the capstans and driven capstans are connected to each other.

16. The device of claim 15, wherein the capstans and the driven capstans are all gears, connected by a chain.

17. The device of claim 15, wherein the capstans and the driven capstans are all belt pulleys, connected by a belt.

18. The device of claim 15, wherein: a plurality of groups of stirring vanes are located on both sides of the rotating shaft, and each group of stirring vanes comprises three vanes equally spaced in the circumferential direction.

19. The device of claim 15, wherein hollow stirring rods are located on the cylinder with alternate permutations in the axial direction.

20. The device of claim 19, wherein at least six hollow stirring rods are located on the cylinder.

Description

FIGURE EXPLANATION

[0021] FIG. 1 is the structure of the material stirring device for a biomass bin.

IMPLEMENTATION MATTERS

[0022] The following explanation of the invention is provided to make the present invention clear in aim, technical scheme, and advantages. It should be understood that the specific explanations described herein shall be interpreted only in the interpretation of the invention and are not intended to be used to define the present invention.

[0023] FIG. 1 shows that the material stirring device for a biomass bin includes a transmission mechanism, a main stirring mechanism, and an auxiliary stirring mechanism. The transmission mechanism includes an electromotor 10; the electromotor 10 is connected to the main stirring mechanism 13; the main stirring mechanism 13 and the cylinder 11 are in the same shaft and are connected by the spring catches. The spring catch includes the hollow catch 12. The auxiliary stirring mechanism includes a rotating shaft 22 vertically penetrating through the hollow stirring rod 12; both ends of the rotating shaft 22 are provided with stirring blades 23. Driven capstans 24 are set on the rotating shaft 22 of the hollow catch 12. Several capstans 20 are set on the main stirring mechanism 13. The capstans 20 and the driven capstans 24 are connected to each other by chain 21.

[0024] The spring catch includes the hollow catch 30; the hollow catch 30 includes the spring 32 with hemispherical balls 31 on both ends of the spring. There are two holes in the cylinder 11 to accommodate the hemispherical balls 31 and the diameter of the hole is smaller than that of the hemispherical ball 31 to ensure that the hemispherical ball cannot be divorced from the hole.

[0025] When the material stirring device works, electromotor 10 drives the main stirring mechanism 13. If the density of the material in the bin is normal, the resistance between the hemispherical ball 31 and the hole is greater than the resistance between the biomass material and the cylinder 11, so that the hemispherical ball 31 can be driven by spring 32 and the hemispherical ball 31 passes out of the cylinder 11 through the hole. The cylinder 11 is run by the spring connected to the main stirring mechanism 13. The cylinder 11 stirs the biomass material through the hollow stirring rod 12, and the auxiliary stirring mechanism does not need to work.

[0026] Under the condition of abnormal density (high density) of biomass material stored in the material bin, there is too great a resistance between the biomass material and the hollow stirring rod 12 and the cylinder 11. The main stirring mechanism 13 is driven by the electromotor 10 and causes the spring catches to rotate. However, the resistance between the hemispherical balls 31 and the holes is less than that between the biomass material and the hollow stirring rod 12 and cylinder 11, so the cylinder 11 cannot rotate and the spring catches 31 are compressed into the holes. The spring catches will be rotated with the main stirring mechanism 13, but the cylinder 11 cannot be rotated. Finally, the main stirring mechanism 13 drives the driven capstans 24 through the capstans 20 and the chain 21. The driven capstans 24 drive the rotating shaft 22. There are stirring blades 23 on both sides of the rotating shaft 22. The stirring blades 23 stir the biomass material to lower the density. When the density of the material is so low that the resistance between the hollow stirring rod 12 and the cylinder 11 is less than that between the hemispherical balls 31 and the holes, the hemispherical balls 31 and the holes will join together again. The main stirring mechanism 13 will drive the cylinder 11 by the spring catches, the cylinder 11 will drive the hollow stirring rods 12 to stir the biomass material in the bin and the auxiliary stirring mechanism stops working.

[0027] INDUSTRIAL APPLICABILITY

[0028] In summary, the structure of the material stirring device for biomass bin is simple and ingeniously designed. That the stirring device is easily damaged due to too high density of the biomass material is overcome through the automatic conversion adjustment of the main and auxiliary stirring mechanisms. The continuous discharge efficiency of the biomass bin is improved by the organic integration of over and partial stirring. The stirring bin can be used in biomass energy utilization industries to enhance efficiency, reduce environmental pollution, and accelerate the implementation of biomass utilization at the large scale. The invention is suitable for industrialized production.