Adjustable dead knife assembly for pulverizer

Abstract

The adjustable dead knife assembly comprises a dead knife seat and a blade, an inserting groove is formed in the dead knife seat, the blade is inserted into the inserting groove and abuts against one side wall of the inserting groove, an inclined inserting block is inserted between the blade and the other side wall of the inserting groove, and the inclined inserting block is connected with the inserting groove in an inserted mode. The inclined inserting block is provided with a first end face and a second end face which abut against the side wall of the inserting groove and the blade respectively, the included angle between the first end face and the second end face is an acute angle, the end face distance, close to the bottom of the inserting groove, between the first end face and the second end face is smaller than the end face distance, away from the bottom of the inserting groove, between the first end face and the second end face, and a fastening bolt for fixing the inclined inserting block is further arranged on the dead knife holder. According to the utility model, the inclined slot moves from outside to inside along the inclined surface by screwing the fastening bolt, so that the blade is tightly pressed on the side wall of the slot. When the blade is disassembled, the blade can be loosened by the oblique insertion block by reversely screwing the fastening bolt, the use is convenient, and after the blade is worn, the exposed size of the blade is adjusted by screwing the adjusting bolt, so that the blade is reused, and the use cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pulverizer technical field, specifically point to a kind of adjustable bottom cutter assembly for pulverizer. BACKGROUND

[0002] Plastic pulverizer is pulverized various plastic and rubber, such as plastic profile, tube, stick, silk, film, waste rubber products, and the granules formed by pulverization can be directly used as production raw materials.

[0003] The utility model discloses a kind of multifunctional plastic pulverizers, including chassis, the upper surface of the chassis is equipped with mainframe box, mainframe box inside center position is equipped with inertia rotor by big axle, inertia rotor is evenly arranged and installed on the outside of big axle, the inertia rotor adopts multiple rows of alloy blades, bottom cutter assembly seat is installed below the inertia rotor, alloy blade is embedded in bottom cutter assembly seat. When pulverizing, inertia rotor is driven to rotate by big axle rotation, and the alloy blade of inertia rotor cooperates with the alloy blade of bottom cutter assembly seat to realize the pulverization of material.

[0004] As described in such patent, the alloy blade of the bottom cutter assembly seat of existing pulverizer is embedded and installed, when replacing blade, it is very inconvenient to disassemble and assemble, it is more laborious, and it is more inconvenient to use. And the distance between the blade installed in the existing bottom cutter assembly seat and the inertia rotor is fixed, when the length of the blade is shortened after wear, the distance between the blade and the inertia rotor will be larger, since the position of the blade cannot be adjusted, only new blade can be replaced to ensure the cutting distance between the two, the blade cannot be utilized, resulting in waste of blade. INVENTION CONTENTS

[0005] The utility model provides a kind of adjustable bottom cutter assembly for pulverizer according to the deficiency of prior art, it is convenient to disassemble and assemble blade, it is convenient to use, and it is convenient to adjust the exposed size of blade, it is convenient to the repeated use of blade, save cost.

[0006] The utility model is realized through the following technical schemes, a kind of adjustable bottom cutter assembly for pulverizer, including bottom cutter seat and blade, the insertion slot is set up on the bottom cutter seat, the blade is inserted in insertion slot and the blade is in abutment with the side wall of insertion slot, and oblique insertion block is inserted between the other side wall of blade and insertion slot, the oblique insertion block is equipped with first end face and second end face respectively in abutment with the side wall of insertion slot and the blade, the included angle of first end face and second end face is acute angle, the end face spacing between first end face and second end face close to the bottom of insertion slot is less than the end face spacing away from the bottom of insertion slot, the bottom cutter seat is also equipped with fastening bolt for fixing oblique insertion block.

[0007] The first end face and the second end face of the oblique insertion block form an acute angle, the oblique insertion block forms an inclined surface, the distance between the end faces close to the bottom of the insertion slot is smaller than the distance between the end faces away from the bottom of the insertion slot, so that the oblique insertion slot is inserted from outside to inside, the distance gradually decreases, the blade is pressed against the side wall of the insertion slot, the oblique insertion block is fixed through the fastening bolt, and the blade is fixed.

[0008] As an optimization, the depth of the insertion slot is greater than the length of the first end face.

[0009] As an optimization, the angle between the two side walls of the insertion slot abutting against the blade and the oblique insertion block is also an acute angle, and the distance between the bottoms of the two side walls of the insertion slot is smaller than the distance between the tops of the two side walls.

[0010] As an optimization, the angle between the two side walls of the insertion slot is the same as the angle between the first end face and the second end face.

[0011] As an optimization, a bolt hole opposite to the oblique insertion block is formed in the bottom of the insertion slot, a first threaded hole opposite to the bolt hole is formed in the oblique insertion block, and the fastening bolt passes through the bolt hole and is screwed with the first threaded hole.

[0012] As an optimization, the sum of the depths of the bolt hole and the first threaded hole is not less than the length of the fastening bolt.

[0013] As an optimization, a second threaded hole opposite to the blade is formed in the bottom of the insertion slot, an adjusting bolt screwed with the second threaded hole is arranged in the insertion slot, and the bottom of the blade abuts against the adjusting bolt.

[0014] As an optimization, the depth of the second threaded hole is not less than the length of the adjusting bolt.

[0015] As an optimization, the transverse section of the oblique insertion block comprises the first end face and the second end face, and further comprises a third end face and a fourth end face, one end of the first end face and the second end face close to the bottom of the insertion slot is connected through the third end face, one end of the first end face and the second end face away from the bottom of the insertion slot is connected through the fourth end face, the third end face is parallel to the bottom of the insertion slot, and the height of the fourth end face close to one end of the second end face is higher than the height of the fourth end face close to one end of the first end face.

[0016] The utility model discloses the beneficial effects are: when fixing the blade, the oblique insertion slot moves from outside to inside along the inclined surface by screwing the fastening bolt, because the internal distance gradually reduces, with the insertion of the oblique insertion block, the blade is pressed against the side wall of the insertion slot.

[0017] When the blade is worn, the length will be shortened, the supporting distance to the bottom of the blade can be adjusted by rotating the adjusting bolt, the exposed size of the blade is adjusted, the distance between the blade and the inertia rotor is ensured, the worn blade can be reused after being ground again, the reuse of the blade is realized, the waste of the blade is prevented, and the use cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The schematic view for installing the bottom cutter assembly on the pulverizer;

[0019] Figure 2 The enlarged view of A part of Figure 1

[0020] Figure 3 The sectional view of the present utility model;

[0021] Figure 4 The sectional view of the inclined plug;

[0022] The schematic view for installing the bottom cutter assembly on the pulverizer;

[0023] 1, bottom cutter seat, 2, blade, 3, inclined plug, 31, first end face, 32, second end face, 33, third end face, 34, fourth end face, 4, adjusting bolt, 5, fastening bolt, 6, slot, 7, bolt hole, 8, first threaded hole, 9, second threaded hole, 10, main machine box, 11, inertia rotor. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of the present scheme, the present scheme will be described below through specific embodiments.

[0025] As shown in the schematic view for installing the bottom cutter assembly on the pulverizer, Figures 1 to 4 A kind of adjustable bottom cutter assembly for pulverizer, including bottom cutter seat 1 and blade 2, the slot 6 is set in bottom cutter seat 1, the blade 2 is inserted in slot 6 and blade 2 and the side wall of slot 6 abut, and inclined plug 3 is inserted between blade 2 and the other side wall of slot 6.

[0026] The inclined plug 3 is provided with a first end face 31 and a second end face 32 abutting with the side wall of the slot 6 and the blade 2 respectively, the included angle of the first end face 31 and the second end face 32 is an acute angle, the end face spacing between the first end face 31 and the second end face 32 close to the bottom of the slot 6 is less than the end face spacing away from the bottom of the slot 6, and the bottom cutter seat 1 is also provided with a fastening bolt 5 for fixing the inclined plug 3. Since the included angle of the first end face 31 and the second end face 32 is an acute angle, the two end faces will form an inclined surface. Since the end face spacing between the first end face and the second end face close to the bottom of the slot is less than the end face spacing away from the bottom of the slot, the spacing of the two end faces gradually decreases from outside to inside.

[0027] ​The angle between the two side walls of the slot 6 abutting the blade 2 and the inclined block 3 is also acute, and the distance between the bottoms of the two side walls of the slot 6 is smaller than the distance between the tops of the two side walls. Since the inner diameter of the slot 6 gradually decreases from outside to inside, when the inclined block 3 is inserted into the slot from outside to inside, the blade 2 is pressed to achieve the compression of the blade 2.

[0028] The angle between the two side walls of the slot 6 is the same as the angle between the first end face 31 and the second end face 32. Since the angles of the two angles are the same, the first end face 31 of the inclined block 3 can be completely fitted with the side wall of the slot 6, and the inclined surface of the inclined block can slide along the inclined surface of the slot.

[0029] Preferably, the depth of the slot 6 is greater than the length of the first end face 31, and when the inclined block 3 is inserted, the bottom of the inclined block 3 can form a cavity with the bottom of the slot 6, so that the inclined block 3 has a sliding margin downward, thereby improving the compression effect of the blade 2.

[0030] Specifically, the cross section of the inclined block 3 includes the first end face 31 and the second end face 32, and further includes a third end face 33 and a fourth end face 34. The end of the first end face 31 and the second end face 32 close to the bottom of the slot 6 is connected by the third end face 33, and the end of the first end face 31 and the second end face 32 away from the bottom of the slot 6 is connected by the fourth end face 34. The third end face 33 is parallel to the bottom of the slot 6, and the height of the fourth end face 34 close to the second end face 32 is higher than the height of the fourth end face 34 close to the first end face 31. The inclined block 3 is enclosed by the first end face 31, the second end face 32, the third end face 33 and the fourth end face 34 to form a solid block structure, which has high structural strength.

[0031] In this embodiment, the blade 2 is horizontally inserted into the slot 6, the bottom of the slot 6 is perpendicular to the blade 2, the side wall of the slot 6 abutting the inclined block 3 is inclined, the second end face 32 of the inclined block 3 is horizontal and fitted with the blade 2, the first end face 31 is inclined and parallel to the inclined side wall of the slot 6, and the third end face 33 is parallel to the bottom of the slot 6. The fourth end face 34 is inclined to improve the clamping strength of the blade 2 and avoid deformation of the outer end of the blade.

[0032] The bottom of the slot 6 is provided with a bolt hole 7 opposite to the inclined block 3, and the inclined block 3 is provided with a first threaded hole 8 opposite to the bolt hole 7. In this embodiment, the first threaded hole 8 is provided on the third end face 33. The fastening bolt 5 passes through the bolt hole 7 and is screwed with the first threaded hole 8. Since the fastening bolt 5 is located at the bottom of the slot 6, it is opposite to the inclined block 3 along the axial direction, and the axial direction of the fastening bolt 5 is the same as the moving direction of the inclined block 3. Therefore, by rotating the fastening bolt 5, the inclined block 3 can be driven to move in and out of the slot 6, which is convenient to use.

[0033] The sum of the depths of the bolt hole 7 and the first threaded hole 8 is not less than the length of the fastening bolt 5. When the inclined block 3 abuts against the bottom of the slot 6, the fastening bolt 5 still has a fastening effect on the inclined block 3.

[0034] The bottom of the slot 6 is provided with a second threaded hole 9 opposite the blade 2, and the slot 6 is provided with an adjusting bolt 4 screwed with the second threaded hole 9, and the bottom of the blade 2 abuts against the adjusting bolt 4. By screwing the adjusting bolt 4, the spacing between the bottom of the blade 2 and the bottom of the slot 6 can be adjusted, so as to adjust the support spacing of the bottom of the blade 2, and facilitate the adjustment of the exposed length of the outer end of the blade 2. The depth of the second threaded hole 9 is not less than the length of the adjusting bolt 4. In this way, the threads of the adjusting bolt 4 can be screwed into the second threaded hole 9, and the minimum spacing between the bottom of the blade 2 and the bottom of the slot 6 can be achieved.

[0035] As shown in Figure 1 , 2 The bottom knife assembly of the embodiment is used in a pulverizer. As disclosed in the pulverizer with publication number CN113752428A, the bottom knife seat 1 of the bottom knife assembly is fixedly installed on the main machine box 11 of the pulverizer in use, and the blade 2 of the bottom knife assembly cooperates with the inertia rotor 12 of the pulverizer to achieve the pulverization of the material, which is prior art and will not be described in detail here.

[0036] Working principle: when the blade 2 is fixed, first, the size of the blade 2 that needs to be exposed is determined, the support spacing of the bottom of the blade 2 is adjusted by screwing the adjusting bolt 4, and then the exposed size of the blade 2 is adjusted. The blade 2 is placed into the slot 6, the bottom of the blade 2 abuts against the adjusting bolt 4, and then the fastening bolt 5 is screwed to move the inclined block 3 from outside to inside and insert the inclined block 3 into the slot 6. Since the inner cavity of the slot 6 gradually decreases, the blade 2 is extruded by the insertion of the inclined block 3, and finally the blade 2 is pressed tightly against the side wall of the slot 6.

[0037] When the blade 2 needs to be taken out, the fastening bolt 5 is unscrewed in reverse to drive the inclined block 3 to move from inside to outside, so as to loosen the blade 2, and then the blade can be taken out.

[0038] The above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model. The ordinary skilled in the art should understand that the changes, modifications, additions or replacements made by the ordinary skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. An adjustable bottom knife assembly for a pulverizer comprising a bottom knife seat (1) and a blade (2), characterized in that: The bottom cutter seat (1) is provided with a slot (6), the cutter (2) is inserted into the slot (6) and abuts against one side wall of the slot (6), and an oblique insertion block (3) is inserted between the cutter (2) and the other side wall of the slot (6). The oblique insertion block (3) is provided with a first end face (31) and a second end face (32) abutting against the side wall of the slot (6) and the cutter (2) respectively. The included angle of the first end face (31) and the second end face (32) is an acute angle. The end face spacing between the first end face (31) and the second end face (32) close to the bottom of the slot (6) is smaller than the end face spacing between the first end face (31) and the second end face (32) away from the bottom of the slot (6). The bottom cutter seat (1) is further provided with a fastening bolt (5) for fixing the oblique insertion block (3).

2. The adjustable bottom knife assembly for a comminutor according to claim 1, wherein: The depth of the slot (6) is greater than the length of the first end face (31).

3. The adjustable bottom knife assembly for a comminutor according to claim 1, wherein: The included angle of the two side walls of the slot (6) abutting against the cutter and the oblique insertion block is also an acute angle. The bottom spacing of the two side walls of the slot (6) is smaller than the top spacing of the two side walls of the slot (6).

4. The adjustable bottom knife assembly for a comminutor according to claim 3, wherein: The included angle of the two side walls of the slot (6) is the same as the included angle of the first end face (31) and the second end face (32).

5. The adjustable bottom knife assembly for a comminutor according to claim 1, wherein: The bottom of the slot (6) is provided with a bolt hole (7) opposite to the oblique insertion block (3). The oblique insertion block (3) is provided with a first threaded hole (8) opposite to the bolt hole (7). The fastening bolt (5) passes through the bolt hole (7) and is screwed with the first threaded hole (8).

6. The adjustable bottom knife assembly for a comminutor according to claim 5, wherein: The sum of the depths of the bolt hole (7) and the first threaded hole (8) is not less than the length of the fastening bolt (5).

7. The adjustable bottom knife assembly for a comminutor according to claim 1, wherein: The bottom of the slot (6) is provided with a second threaded hole (9) opposite to the cutter (2). The slot (6) is provided with an adjusting bolt (4) screwed with the second threaded hole (9). The bottom of the cutter (2) abuts against the adjusting bolt (4).

8. The adjustable bottom knife assembly for a comminutor according to claim 7, wherein: The depth of the second threaded hole (9) is not less than the length of the adjusting bolt (4).

9. The adjustable bottom knife assembly for a comminutor according to claim 1, wherein: The cross section of the oblique insertion block (3) includes the first end face (31) and the second end face (32), and further includes a third end face (33) and a fourth end face (34). One end of the first end face (31) and the second end face (32) close to the bottom of the slot (6) is connected through the third end face (33). One end of the first end face (31) and the second end face (32) away from the bottom of the slot (6) is connected through the fourth end face (34). The third end face (33) is parallel to the bottom of the slot (6). The height of the fourth end face (34) close to one end of the second end face (32) is higher than the height of the fourth end face (34) close to one end of the first end face (31).

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