CN106391200B

CN106391200B - Stevia rebaudianum candy powder crushing mechanism

Info

Publication number: CN106391200B
Application number: CN201610759868.9A
Authority: CN
Inventors: 周伯雅
Original assignee: Xinghua Green Biological Preparation Co ltd
Current assignee: Xinghua Green Biological Preparation Co ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2020-04-07
Anticipated expiration: 2036-08-30
Also published as: CN106391200A

Abstract

The invention discloses a stevioside fruit powder crushing mechanism which comprises a plane grinding unit, an annular grinding unit and a support frame unit, wherein the plane grinding unit consists of an upper grinding disc and a lower grinding disc which are matched with each other; the supporting shaft is vertically arranged, two ends of the supporting shaft are rotatably supported on the supporting frame through an upper bearing seat and a lower bearing seat, and the transmission element is connected to the supporting shaft; the centers of the concave ring mill and the lower grinding disc are respectively provided with a first discharge hole and a second discharge hole, and the concave ring mill and the lower grinding disc are connected with the supporting shaft in a penetrating way through the corresponding discharge holes and are respectively positioned at the upper part and the lower part of the supporting shaft; the invention adopts two stages of grinding disc units, and has good grinding effect.

Description

Stevia rebaudianum candy powder crushing mechanism

Technical Field

The invention relates to plant crushing processing equipment, in particular to a crushing mechanism for stevioside fruit powder.

Background

In order to change the bitter taste of stevioside, the applicant designs a fruity compound sweetener, wherein fruit powder, such as blueberry fruit powder, is used, so that the production of the sweetener relates to the problems of drying and milling fruit plants.

The applicant of the present application discloses a processing device integrating independent drying and powder-making equipment in an invention patent with a patent number ZLCN201310678847.0, wherein the processing device can maintain the original nutrient components and the unique taste of fruit plants in the drying process, can continuously produce in a flowing mode in the powder-making process, and does not generate dust to influence the production environment; however, the above-described processing apparatus has the following problems: when the friction force between the material and the drying plate is large, the material is easy to stay on the drying plate all the time, so that the drying efficiency is low; the discharging valve consists of a valve seat and a valve core which rotate relatively, when the valve is opened, a material blocking surface with approximately half area still exists, and the discharging efficiency is low; the grinding mechanism only has one group of grinding discs, and the grinding effect is not ideal.

Disclosure of Invention

The invention aims to provide a stevia candy powder crushing mechanism which is provided with two stages of grinding units and has a good crushing effect.

The technical scheme provided by the invention for solving the technical problems is as follows: the stevia rebaudiana fruit powder crushing mechanism comprises a plane grinding unit consisting of an upper grinding disc and a lower grinding disc which are matched with each other, and is characterized by further comprising an annular grinding unit and a support frame unit, wherein the annular grinding unit is positioned above the plane grinding unit and comprises a convex ring grinder and a concave ring grinder which are matched with each other, and the support frame unit comprises a support frame, a support shaft, an upper bearing seat, a lower bearing seat and a transmission element; the supporting shaft is vertically arranged, two ends of the supporting shaft are rotatably supported on the supporting frame through an upper bearing seat and a lower bearing seat, and the transmission element is connected to the supporting shaft; the centers of the concave ring mill and the lower grinding disc are respectively provided with a first discharge hole and a second discharge hole, and the concave ring mill and the lower grinding disc are connected with the supporting shaft in a penetrating way through the corresponding discharge holes and are respectively positioned at the upper part and the lower part of the supporting shaft; the convex ring mill is fixed at the upper part of the support shaft and is positioned in the concave ring mill, an annular gap is reserved between the convex ring mill and the concave ring mill, and the annular gap is distributed along the height direction with the gap gradually reduced from top to bottom; the upper grinding disc is fixed at the lower part of the supporting shaft and is positioned above the lower grinding disc, and an annular gap is reserved between the upper grinding disc and the lower grinding disc and is distributed along the radial direction to the center.

The improvement of the technical scheme is as follows: the convex ring mill is provided with a convex elliptical surface, the milling surface of the convex ring mill is arranged on the elliptical surface, the milling surface is provided with a first material pushing groove consisting of two nonparallel spiral surfaces, the first material pushing groove gradually narrows from top to bottom, the concave ring mill is provided with a concave elliptical surface which has an ellipse different from that of the convex elliptical surface, and the milling surface of the concave ring mill is arranged in the concave elliptical surface; the grinding surface of the upper grinding disc is a conical surface, a second material pushing groove formed by two non-parallel spiral surfaces is arranged on the grinding surface, and the groove width of the second material pushing groove gradually narrows from outside to inside.

The upper bearing seat and the lower bearing seat are respectively fixed on the corresponding positions of the upper part and the lower part of the support frame; the upper bearing seat comprises a rolling bearing and a rolling bearing support, and the lower bearing seat comprises a plane bearing and a plane bearing support.

The support shafts are connected with corresponding transmission units.

The invention has the beneficial effects that: the grinding mechanism comprises two groups of grinding discs, the grinding effect is good, the first-stage grinding unit adopts the combination of the convex ring mill and the concave ring mill, the contact area of the grinding discs is large, namely the grinding surface area is large, the effect is good, the lower end of the support shaft in the grinding mechanism and the lower bearing seat of the joint of the support frame adopt a plane bearing, the support shaft is effectively supported, the direct contact between the support shaft and the support frame is avoided, and the friction resistance is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

Detailed Description

As shown in fig. 1, in order to further improve the crushing effect, the crushing mechanism is provided with an annular mill unit and a planar mill unit, and in order to support two groups of grinding discs, a support frame unit consisting of a support frame 15, a support shaft 16, an upper bearing seat, a lower bearing seat and a transmission element is also provided, wherein the annular mill unit comprises a convex ring mill 11 and a concave ring mill 12 which are matched with each other, and the planar mill unit comprises an upper grinding disc 13 and a lower grinding disc 14 which are matched with each other; the supporting shaft 16 is vertically arranged, two ends of the supporting shaft are rotatably supported on the supporting frame 15 through an upper bearing seat and a lower bearing seat, the transmission element is connected to the supporting shaft 16, the upper bearing seat and the lower bearing seat are respectively fixed on the corresponding positions of the upper portion and the lower portion of the supporting frame 15, the upper bearing seat comprises a rolling bearing and a rolling bearing support, and the lower bearing seat comprises a plane bearing and a plane bearing support.

The centers of the concave ring mill 12 and the lower grinding disc 14 are respectively provided with a first discharge hole 121 and a second discharge hole 141, and the concave ring mill and the lower grinding disc are connected with the support shaft 16 through the corresponding discharge holes and are respectively positioned at the upper part and the lower part of the support shaft 16; the convex ring mill 11 is fixed on the upper part of the support shaft 16 and is positioned in the concave ring mill 12, and an annular gap is reserved between the convex ring mill 11 and the concave ring mill 12 and is distributed along the gap which is gradually reduced from top to bottom along the height direction; the upper grinding disc 23 is fixed at the lower part of the supporting shaft 16 and is positioned above the lower grinding disc 14, and an annular gap exists between the upper grinding disc 13 and the lower grinding disc 14, and the annular gap is distributed along the radial direction and gradually decreases from the center.

The convex ring mill 11 is provided with a convex elliptical surface, the milling surface of the convex ring mill is arranged on the elliptical surface, the milling surface is provided with a first material pushing groove consisting of two nonparallel spiral surfaces, the first material pushing groove gradually narrows from top to bottom, the concave ring mill 12 is provided with a concave elliptical surface which has different ellipses with the convex elliptical surface, and the milling surface of the concave ring mill is arranged in the concave elliptical surface; the grinding surface of the upper grinding disc 13 is a conical surface, a second material pushing groove formed by two non-parallel spiral surfaces is arranged on the grinding surface, and the groove width of the second material pushing groove gradually narrows from outside to inside; like this along with the rotation of mill, the material is constantly pushed to the mill center under the effect of pushing away the silo, and in the process of moving to the center, the interval of two mills reduces gradually, and the material is ground and is pressed and pulverizes, forms the powder, discharges by first, second discharge opening.

In this embodiment, the supporting shafts 16 are all connected to corresponding transmission units, and the transmission units may adopt gear rack transmission, belt pulley transmission, or synchronous pulley transmission.

The smashing mechanism of stevia rebaudianum sugar fruit powder of this embodiment adopts two-stage mill unit to smash the material, smashes effectually.

The stevia sugar fruit powder crushing mechanism is not limited to the above embodiment, and technical schemes obtained by adopting equivalent replacement methods fall within the protection scope of the invention.

Claims

1. The stevia rebaudiana fruit powder crushing mechanism comprises a plane grinding unit consisting of an upper grinding disc and a lower grinding disc which are matched with each other, and is characterized by further comprising an annular grinding unit and a support frame unit, wherein the annular grinding unit is positioned above the plane grinding unit and comprises a convex ring grinder and a concave ring grinder which are matched with each other, and the support frame unit comprises a support frame, a support shaft, an upper bearing seat, a lower bearing seat and a transmission element; the supporting shaft is vertically arranged, two ends of the supporting shaft are rotatably supported on the supporting frame through an upper bearing seat and a lower bearing seat, and the transmission element is connected to the supporting shaft; the centers of the concave ring mill and the lower grinding disc are respectively provided with a first discharge hole and a second discharge hole, and the concave ring mill and the lower grinding disc are connected with the supporting shaft in a penetrating way through the corresponding discharge holes and are respectively positioned at the upper part and the lower part of the supporting shaft; the convex ring mill is fixed at the upper part of the support shaft and is positioned in the concave ring mill, an annular gap is reserved between the convex ring mill and the concave ring mill, and the annular gap is distributed along the height direction with the gap gradually reduced from top to bottom; the upper grinding disc is fixed at the lower part of the supporting shaft and is positioned above the lower grinding disc, and an annular gap is reserved between the upper grinding disc and the lower grinding disc and is distributed along the radial direction to the center; the upper bearing seat and the lower bearing seat are respectively fixed on the corresponding positions of the upper part and the lower part of the support frame; the upper bearing seat comprises a rolling bearing and a rolling bearing support, and the lower bearing seat comprises a plane bearing and a plane bearing support.

2. The stevia sugar fruit powder pulverizing mechanism of claim 1, wherein said convex ring mill has a convex ellipsoid on which the milling surface is disposed, said milling surface has a first material pushing groove consisting of two non-parallel helicoids, said first material pushing groove gradually narrows from top to bottom, said concave ring mill has a concave ellipsoid with an ellipse different from that of the convex ellipsoid, and the milling surface is disposed in said concave ellipsoid; the grinding surface of the upper grinding disc is a conical surface, a second material pushing groove formed by two non-parallel spiral surfaces is arranged on the grinding surface, and the groove width of the second material pushing groove gradually narrows from outside to inside.

3. The stevia sugar fruit powder pulverizing mechanism of claim 2, wherein said support shafts are connected with corresponding transmission units.