Crushing roller of plastic crusher

Abstract

The utility model relates to the technical field of crushers, in particular to a crushing roller of a plastic crusher, which comprises a crushing roller body, a hollow channel is arranged at the axis of the crushing roller body, a heat conduction cylinder is arranged in the hollow channel, and a sealing cavity is arranged between the outer peripheral wall of the heat conduction cylinder and the inner peripheral wall of the crushing roller body. The sealing cavity is filled with heat conduction oil, the heat conduction cylinder is provided with an overflowing channel arranged in the axis direction of the smashing roller body, one end of the overflowing channel is communicated with the outside, and the other end of the overflowing channel is communicated with an air extraction opening of negative pressure air extraction equipment. According to the device, only a thin layer of heat conduction oil is filled between the outer peripheral wall of the heat conduction cylinder and the inner peripheral wall of the crushing roller body, and then the heat conduction oil is cooled through gas, so that the problems that the crushing roller shakes seriously and the bearing is damaged seriously when the crushing roller rotates due to eccentric distribution of traditional liquid are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pulverizer technical field especially relates to a kind of pulverizing roller of plastic pulverizer. BACKGROUND

[0002] Plastic pulverizer is a kind of machine for pulverizing broken product, and has wide application in the field of broken product recycling and reprocessing.

[0003] When pulverizing a large amount of plastics, the pulverizer works continuously, and when the pulverizing roller is rotating at high speed to pulverize the plastics, the pulverizing roller will generate high temperature, which may cause the plastics to adhere to the pulverizing roller, affecting the pulverizing efficiency of the pulverizing roller.

[0004] Publication (announcement) No. CN220242104U discloses a plastic pulverizer, and when the existing technology pulverizing roller performs pulverizing work, cold water enters the pulverizing roller through the water inlet pipe and is discharged from the water outlet pipe, realizing the circulation of cold water and ensuring that the pulverizing roller is always in a low-temperature pulverizing state.

[0005] Although the water cooling circulation method can reduce the temperature of the pulverizing roller, there are air bubbles in the water flow, and the pulverizing roller is rotating at high speed. Therefore, under the condition of high-speed rotation of the pulverizing roller, the centrifugal force acting on the water flow will cause it to move to the outside of the inner cavity of the pulverizing roller, resulting in eccentric distribution of the water flow in the pulverizing roller. If the internal mass distribution of the pulverizing roller itself is uneven, it will cause large shaking during rotation of the pulverizing roller and cause great damage to the bearing. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the problem that the pulverizing roller in the prior art generates high temperature, which may cause the plastics to adhere to the pulverizing roller and affect the pulverizing efficiency of the pulverizing roller. However, the pulverizing roller itself is rotating at high speed, and if the internal mass distribution is uneven, it will cause large shaking during rotation of the pulverizing roller and cause great damage to the bearing. To solve the above-mentioned problems, a pulverizing roller for plastic pulverizer is provided.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A pulverizing roller for plastic pulverizer, comprising a pulverizing roller body, a hollow channel is formed at the shaft center of the pulverizing roller body, a heat-conducting cylinder is installed in the hollow channel, a sealed cavity is formed between the outer peripheral wall of the heat-conducting cylinder and the inner peripheral wall of the pulverizing roller body, the sealed cavity is filled with heat-conducting oil, the heat-conducting cylinder has a flow passage arranged along the axis direction of the pulverizing roller body, one end of the flow passage is connected with the outside, and the other end is connected with the suction port of a negative pressure suction equipment.

[0009] The first ring groove is arranged on the outer peripheral wall of the heat conducting cylinder near the two ends, the first sealing ring is embedded in the first ring groove, the outer peripheral wall of the first sealing ring is higher than the outer peripheral wall of the heat conducting cylinder, and the sealing cavity is located between the first sealing ring at the two ends and the inner peripheral wall of the crushing roller body and the outer peripheral wall of the heat conducting cylinder.

[0010] The heat conducting cylinder is provided with a liquid inlet at one end along the radial direction and a liquid outlet at the other end along the radial direction, the liquid inlet and the liquid outlet are both communicated with the sealing cavity, the diameter of the liquid inlet is larger than that of the liquid outlet, and the liquid inlet and the liquid outlet are both blocked by plugs.

[0011] The crushing roller body is provided with a support at each end, the support comprises a flange plate and a hollow rotating shaft which is integrally formed with the flange plate, the flange plate is fixed on the end of the crushing roller body by bolts, and the end of the heat conducting cylinder is axially limited and assembled with the flange plate.

[0012] The second ring groove is arranged on the end face of the heat conducting cylinder, the second sealing ring is embedded in the second ring groove, and the second sealing ring is clamped between the heat conducting cylinder and the flange plate.

[0013] The heat conducting cylinder is made of aluminum profile, a plurality of heat conducting ribs are integrally formed in the heat conducting cylinder along the radial direction, and the flow channel is arranged between adjacent heat conducting ribs.

[0014] A plurality of blind holes are arranged on the end face of the heat conducting cylinder, and the flange plate is provided with a plurality of protruding parts which can be inserted into the blind holes.

[0015] The crushing roller of the plastic crusher has the beneficial effect that: the device only fills heat conducting oil between the outer peripheral wall of the heat conducting cylinder and the inner peripheral wall of the crushing roller body, the heat conducting oil is only a thin layer, and then the heat conducting oil is cooled by gas, so that the problem that the traditional liquid eccentric distribution leads to large shaking of the crushing roller during rotation and large damage to the bearing is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a front view of the structure of the utility model;

[0017] Fig. 2 It is a three-dimensional structure diagram of the heat conducting cylinder of the utility model;

[0018] Fig. 3 It is a left view structure diagram of the heat conducting cylinder of the utility model.

[0019] In the drawing: negative pressure air extraction equipment 1, hollow channel 2, liquid outlet 3, heat conducting rib 4, sealing cavity 5, crushing roller body 6, flow channel 7, liquid inlet 8, first sealing ring 9, flange plate 10, bolt 11, second sealing ring 12, hollow rotating shaft 13, blind hole 14, heat conducting cylinder 15, first ring groove 16, second ring groove 17. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] Referring to Figs. 1-3 A pulverizing roller of a plastic pulverizer comprises a pulverizing roller body 6, a hollow passage 2 is formed at the shaft center of the pulverizing roller body 6, a heat conduction cylinder 15 is installed in the hollow passage 2, a sealing cavity 5 is formed between the outer peripheral wall of the heat conduction cylinder 15 and the inner peripheral wall of the pulverizing roller body 6, the sealing cavity 5 is filled with heat conduction oil, the heat conduction cylinder 15 has a flow passage 7 arranged along the axial direction of the pulverizing roller body 6, one end of the flow passage 7 is communicated with the outside, and the other end is communicated with the air outlet of a negative pressure air extraction device 1, wherein the negative pressure air extraction device 1 is used in combination with a negative pressure pump or a blowing pump and a vacuum generator, and the air extraction of the flow passage 7 can be realized.

[0022] When the pulverizing roller body 6 breaks the plastic, the negative pressure air extraction device 1 extracts air from the flow passage 7, the air enters through the other end of the flow passage 7, and the air exchanges heat with the heat conduction cylinder when passing through the flow passage 7. The heat conduction cylinder exchanges heat with the pulverizing roller body 6 through the heat conduction oil, so as to achieve the purpose of cooling the pulverizing roller body 6. The device only fills the heat conduction oil between the outer peripheral wall of the heat conduction cylinder 15 and the inner peripheral wall of the pulverizing roller body 6, and the heat conduction oil is only a thin layer, for example, the thickness can be 0.5-1 mm, only to improve the heat exchange efficiency of the heat conduction cylinder 15 and the pulverizing roller body 6, and then cool them through the air. The problem that the traditional water cooling causes large shaking of the pulverizing roller when rotating and large damage to the bearing will not occur.

[0023] Referring to Fig. 2 The outer peripheral wall of the heat conduction cylinder 15 is provided with a first ring groove 16 near the two ends, the first ring groove 16 is embedded with a first sealing ring 9, the outer peripheral wall of the first sealing ring 9 is higher than the outer peripheral wall of the heat conduction cylinder 15, the sealing cavity 5 is located between the first sealing ring 9 at the two ends and the inner peripheral wall of the pulverizing roller body 6 and the outer peripheral wall of the heat conduction cylinder 15, and the first ring groove 16 and the first sealing ring 9 are used to form the sealing cavity 5. The sealing cavity 5 is simple to form and convenient to install.

[0024] One end of the heat conduction cylinder 15 is provided with a liquid inlet 8 along the radial direction, and the other end is provided with a liquid outlet 3 along the radial direction, the liquid inlet 8 and the liquid outlet 3 are both communicated with the sealing cavity 5, the diameter of the liquid inlet 8 is larger than that of the liquid outlet 3, and the liquid inlet 8 and the liquid outlet 3 are both plugged by plugs. After installation, the heat conduction oil is filled into the sealing cavity 5 through the liquid inlet 8, and the air and part of the heat conduction oil are discharged through the liquid outlet 3. Since the diameter of the liquid inlet 8 is larger than that of the liquid outlet 3, the sealing cavity 5 can be better filled.

[0025] The support member is provided with a flange plate 10 and a hollow rotating shaft 13 integrally formed with the flange plate 10, the flange plate 10 is fixed on the end of the pulverizing roller body 6 through bolts 11, the end of a heat conducting cylinder 15 is axially limitedly assembled with the flange plate 10, and an external rotating power source is drivingly connected with the hollow rotating shaft 13 to drive the pulverizing roller body 6 to rotate.

[0026] The end surface of the heat conducting cylinder 15 is provided with a second ring groove 17, and a second sealing ring 12 is embedded in the second ring groove 17, the second sealing ring 12 is clamped between the heat conducting cylinder 15 and the flange plate 10, and the heat conducting cylinder 15 is limited at both ends by the flange plate 10 to avoid left and right movement of the heat conducting cylinder 15.

[0027] Further, the heat conducting cylinder 15 is made of aluminum profile, a plurality of heat conducting rib plates 4 are integrally formed in the heat conducting cylinder 15 along the radial direction, and the adjacent heat conducting rib plates 4 have flow passages 7, the aluminum profile is integrally formed, the heat conducting effect is better, and the cost is also relatively low.

[0028] The end surface of the heat conducting cylinder 15 is provided with a plurality of blind holes 14, the flange plate 10 has a plurality of protruding parts capable of being inserted into the blind holes 14, the protruding parts are inserted into the blind holes 14 to limit the heat conducting cylinder 15 in the circumferential direction by the flange plate 10, and relative rotation between the heat conducting cylinder 15 and the pulverizing roller body 6 is avoided.

[0029] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can obtain technical solutions, concepts and designs according to the technical scheme and concept of the present application within the technical range disclosed by the present application by equivalent replacement or change, which should be covered in the protection scope of the present application.

Claims

1. A pulverizing roller of a plastic pulverizer, comprising a pulverizing roller body (6) having a hollow passage (2) formed at the center of the axis of the pulverizing roller body (6), characterized in that, A heat-conducting cylinder (15) is arranged in the hollow channel (2), and a sealing cavity (5) is formed between the outer wall of the heat-conducting cylinder (15) and the inner wall of the pulverizing roller body (6). The sealing cavity (5) is filled with heat-conducting oil. The heat-conducting cylinder (15) has a flow passage (7) arranged along the axis of the pulverizing roller body (6). One end of the flow passage (7) is connected to the outside, and the other end is connected to the air outlet of the negative pressure air extraction device (1).

2. A pulverizing roller of a plastic pulverizer according to claim 1, characterized in that, First ring grooves (16) are arranged at the positions close to the two ends of the outer wall of the heat-conducting cylinder (15). First sealing rings (9) are arranged in the first ring grooves (16). The outer wall of the first sealing ring (9) is higher than the outer wall of the heat-conducting cylinder (15). The sealing cavity (5) is located between the first sealing ring (9) at the two ends, the inner wall of the pulverizing roller body (6), and the outer wall of the heat-conducting cylinder (15).

3. A pulverizing roller of a plastic pulverizer according to claim 2, characterized in that, A liquid inlet (8) is arranged at one end of the heat-conducting cylinder (15) along the radial direction, and a liquid outlet (3) is arranged at the other end of the heat-conducting cylinder (15) along the radial direction. The liquid inlet (8) and the liquid outlet (3) are both connected to the sealing cavity (5). The diameter of the liquid inlet (8) is larger than that of the liquid outlet (3). The liquid inlet (8) and the liquid outlet (3) are both sealed by plugs.

4. A shredding roller for a plastic shredder according to any one of claims 1 to 3, wherein, A support is arranged at each end of the pulverizing roller body (6). The support includes a flange (10) and a hollow shaft (13) integrally formed with the flange (10). The flange (10) is fixed to the end of the pulverizing roller body (6) by bolts (11). The end of the heat-conducting cylinder (15) is axially limited and assembled with the flange (10).

5. A pulverizing roller of a plastic pulverizer according to claim 4, wherein A second ring groove (17) is arranged on the end face of the heat-conducting cylinder (15). A second sealing ring (12) is arranged in the second ring groove (17). The second sealing ring (12) is clamped between the heat-conducting cylinder (15) and the flange (10).

6. A pulverizing roller for a plastic pulverizer according to any one of claims 1 to 3, 5, characterized in that, The heat-conducting cylinder (15) is made of aluminum profile. A plurality of heat-conducting ribs (4) are integrally formed in the heat-conducting cylinder (15) along the radial direction. The flow passage (7) is formed between adjacent heat-conducting ribs (4).

7. A pulverizing roller of a plastic pulverizer according to claim 5, wherein A plurality of blind holes (14) are arranged on the end face of the heat-conducting cylinder (15). The flange (10) has a plurality of protruding parts that can be inserted into the blind holes (14).

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