Graded grinding core

Abstract

The utility model discloses a graded grinding core which comprises an inner grinding core and an outer grinding core arranged on the periphery of the inner grinding core in a sleeving mode. The inner grinding core comprises an inner grinding table, and a plurality of groups of first inner grinding grooves and second inner grinding grooves which are formed in the inner grinding table; the plurality of groups of first inner grinding grooves and second inner grinding grooves and the inner grinding table form a first inner grinding blade and a second inner grinding blade; the first inner grinding blade and the second inner grinding blade are spiral from the top to the bottom of the inner grinding table; and the first inner grinding blade and the second inner grinding blade have different grinding precision. The first inner grinding blade and the second inner grinding blade which are different in grinding precision are designed to grind materials, so that when the materials are ground from the feeding end to the discharging end, the materials are ground firstly through the protruding shape of the first inner grinding blade, the ground materials descend, then the materials are ground again through the protruding shape of the second inner grinding blade, and grading grinding of the materials is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grinding, and specifically relates to a grading grinding core. BACKGROUND

[0002] The existing grinder generally comprises a placing cylinder and a grinding core, the grinding core is installed in the placing cylinder, the particle material to be ground is placed in the placing cylinder, the grinding core is rotated, and the grinding work is completed.

[0003] The grinding core generally comprises an outer grinding core and an inner grinding core, the outer grinding core is installed in the placing cylinder, the inner grinding core is located in the outer grinding core, and the inner grinding core can rotate relative to the outer grinding core, and grinding blades are arranged on the inner periphery of the outer grinding core and the outer periphery of the inner grinding core.

[0004] At present, the grinding blades on the inner and outer grinding cores are formed by opening a plurality of spiral downward or upward grooves on the inner and outer grinding cores, and the predetermined distance between the plurality of grooves forms the grinding blade. At present, the shape and size of the grinding blades on the same inner and outer grinding cores are the same, which means that one grinding blade is arranged in a circumferential array on the base body of the inner and outer grinding cores. This design is prone to cause material blockage during grinding, and each grinding blade participates in grinding when the material enters and is output. It is impossible to use a grinding blade with a suitable size for grinding according to the state of the material, which causes large wear of the grinding blade. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a grading grinding core to solve the above problems in the prior art.

[0006] Technical scheme: A grading grinding core comprises:

[0007] An inner grinding core and an outer grinding core sleeved on the periphery of the inner grinding core;

[0008] The inner grinding core comprises an inner grinding table and a plurality of groups of first inner grinding grooves and second inner grinding grooves opened on the inner grinding table;

[0009] The plurality of groups of first inner grinding grooves and second inner grinding grooves form first inner grinding blades and second inner grinding blades with the inner grinding table;

[0010] The first inner grinding blades and the second inner grinding blades are helical along the top to the bottom of the inner grinding table;

[0011] The first inner grinding blades and the second inner grinding blades have different grinding accuracies.

[0012] The utility model discloses a first inner grinding blade and second inner grinding blade of different grinding precision are designed to grind the material, the material is first ground by the bulge of the first inner grinding blade from the feeding end to the discharging end, and the ground material is further ground by the bulge of the second inner grinding blade, so that the material is graded ground, and compared with the traditional grinding core, the material is not easy to block, and the wear of the first inner grinding blade and the second inner grinding blade is small, and the first inner grinding blade and the second inner grinding blade do not need to participate in grinding all the time.

[0013] In further embodiments, the feeding end of the first inner grinding blade is in the form of a bulge with a predetermined arc, and is recessed to the discharging end;

[0014] The middle part of the second inner grinding blade is in the form of a bulge with a predetermined arc, and is recessed to the discharging end.

[0015] In further embodiments, the first inner grinding blade is wider than the second inner grinding blade.

[0016] By designing the first inner grinding blade to be wider than the second inner grinding blade, the wear of the first inner grinding blade and the second inner grinding blade is further reduced, and the material is increased when the material initially enters the grinding core, so that the narrow blade is damaged, the first inner grinding blade is designed to be wider, and the feeding end of the first inner grinding blade is in the form of a bulge with a predetermined arc, so that the material first contacts the bulge of the first inner grinding blade when the material enters, and the material is initially ground;

[0017] The ground material is further ground by the bulge of the middle part of the second inner grinding blade, and the second inner grinding blade is narrow, so that the grinding precision is increased.

[0018] In further embodiments, the inner grinding table is provided with a grinding table connecting groove;

[0019] The grinding table connecting groove has multiple levels and a predetermined shape.

[0020] In further embodiments, the outer grinding core comprises an outer grinding ring and a plurality of outer grinding grooves formed on the inner wall of the outer grinding ring.

[0021] The plurality of outer grinding grooves form a plurality of outer grinding blades with the outer grinding ring.

[0022] The plurality of outer grinding blades are in the form of a spiral from the top to the bottom of the outer grinding ring.

[0023] In further embodiments, a plurality of grinding ring clamping grooves are formed on the outer wall of the outer grinding ring.

[0024] Beneficial effects: the utility model discloses a kind of grading grinding core, the utility model is ground to material by the first inner grinding blade and the second inner grinding blade of different grinding precision design, so that material is ground by first inner grinding blade's bulge and is ground first, after grinding, material drops, and is ground again by the bulge of second inner grinding blade, complete grading grinding to material, compared with traditional grinding core, not easy to block, and due to grading grinding, the wear of first inner grinding blade and second inner grinding blade is also smaller, entire first inner grinding blade and second inner grinding blade do not need to participate in grinding all the way. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure schematic diagram of the utility model.

[0026] Figure 2 It is the part explosion structure schematic diagram of the utility model.

[0027] Figure 3 It is the section structure schematic diagram under part explosion state of the utility model.

[0028] Figure 4 It is the inner grinding core structure schematic diagram of the utility model.

[0029] Figure 5 It is the first inner grinding blade, second inner grinding blade structure schematic diagram of the utility model.

[0030] Figure 6 It is the section structure schematic diagram under cooperation state of the utility model.

[0031] Reference signs are:

[0032] 1, outer grinding core;11, outer grinding ring;12, grinding ring clamping groove;13, outer grinding groove;14, outer grinding blade;

[0033] 2, inner grinding core;21, inner grinding table;22, first inner grinding groove;23, second inner grinding groove;24, first inner grinding blade;25, second inner grinding blade;26, grinding table connecting groove. DETAILED DESCRIPTION

[0034] The application relates to a kind of grading grinding core, explained in detail below by specific implementation.

[0035] A kind of grading grinding core, comprising:

[0036] Inner grinding core 2, and outer grinding core 1 of the outer periphery of the inner grinding core 2 is set in sleeve;

[0037] The inner grinding core 2 includes inner grinding table 21, and multiple groups of first inner grinding groove 22 and second inner grinding groove 23 are opened on the inner grinding table 21;

[0038] The first inner grinding groove 22 and the second inner grinding groove 23 are arranged in multiple groups, and the multiple groups of the first inner grinding groove 22 and the second inner grinding groove 23 form the first inner grinding edge 24 and the second inner grinding edge 25 with the inner grinding table 21;

[0039] The first inner grinding edge 24 and the second inner grinding edge 25 are helical along the top to the bottom of the inner grinding table 21;

[0040] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0041] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0042] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0043] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0044] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0045] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0046] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0047] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0048] The first inner grinding edge 24 and the second inner grinding edge 25 have different grinding accuracies.

[0049] The grinding table connecting groove 26 has multiple levels and has a predetermined shape.

[0050] The outer grinding core 1 comprises an outer grinding ring 11 and a plurality of outer grinding grooves 13 formed on the inner wall of the outer grinding ring 11.

[0051] The plurality of outer grinding grooves 13 and the outer grinding ring 11 form a plurality of outer grinding edges 14.

[0052] The plurality of outer grinding edges 14 are helical from the top to the bottom of the outer grinding ring 11.

[0053] A plurality of grinding ring clamping grooves 12 are formed on the outer wall of the outer grinding ring 11.

[0054] Working principle: The material is placed in the outer grinding core 1 above the inner grinding core 2. When the inner and outer grinding cores 1 rotate relative to each other, the material is first contacted by the raised part of the first inner grinding edge 24 and is preliminarily ground with the outer grinding edge 14. The ground material is then lowered and is contacted by the raised part of the middle position of the second inner grinding edge 25 and is ground again with the outer grinding edge 14.

[0055] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details of the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be variously transformed, and these equivalent transformations all belong to the protection scope of the present application.

Claims

1. A graded grinding core, comprising: Inner grinding core (2), and outer grinding core (1) sleeved around the inner grinding core (2); The inner grinding core (2) is characterized in that it includes an inner grinding table (21), and multiple sets of first inner grinding grooves (22) and second inner grinding grooves (23) formed on the inner grinding table (21); Multiple sets of first inner grinding grooves (22) and second inner grinding grooves (23) together with the inner grinding table (21) form first inner grinding edge (24) and second inner grinding edge (25); The first inner grinding edge (24) and the second inner grinding edge (25) are spiraled from the top to the bottom along the inner grinding table (21); The first internal grinding edge (24) and the second internal grinding edge (25) have different grinding precision.

2. The graded grinding core according to claim 1, characterized in that: The feed end of the first internal grinding blade (24) is raised with a predetermined arc and transitions to a concave shape towards the discharge end; The middle part of the second inner grinding blade (25) is raised with a predetermined arc and transitions to a concave shape towards the discharge end.

3. The graded grinding core according to claim 1, characterized in that: The first internal grinding edge (24) is wider than the second internal grinding edge (25).

4. A graded grinding core according to claim 1, characterized in that: The inner grinding table (21) has a grinding table connecting groove (26); The grinding table connecting groove (26) has multiple levels and a predetermined shape.

5. A graded grinding core according to claim 1, characterized in that: The outer grinding core (1) includes an outer grinding ring (11) and multiple sets of outer grinding grooves (13) formed on the inner wall of the outer grinding ring (11); Multiple sets of external grinding grooves (13) and external grinding rings (11) form multiple sets of external grinding blades (14); The multiple sets of external grinding blades (14) are spiral-shaped from the top to the bottom of the external grinding ring (11).

6. A graded grinding core according to claim 5, characterized in that: The outer wall of the outer grinding ring (11) has multiple grinding ring slots (12).

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