Screw oil cooling mechanism of plastic granulator

Abstract

The utility model relates to the technical field of pelletizers, in particular to a screw oil cooling mechanism of a plastic pelletizer, which comprises a pelletizer body and a screw. A cooling cylinder is arranged on the granulator body, the screw rod is arranged in the granulator body and extends towards one side through the cooling cylinder, an oil tank is fixedly connected to the bottom of the granulator body, an extraction mechanism is arranged at the top of the oil tank, a snake-shaped oil channel is formed in the cooling cylinder, and an oil outlet is formed in the cooling cylinder. Cold oil annularly flows in the cooling cylinder, the flowing speed of the oil in the cooling cylinder can be reduced by flowing in the snakelike oil duct, the temperature of the screw in the cooling cylinder is reduced, the temperature of the screw is controlled, and particles are prevented from being extracted and melted due to the fact that the temperature of the screw is too high; the cooled oil is communicated with the oil tank through the heat dissipation tank, the cooled oil flows into the oil tank, impurities contained in the oil are filtered through the filter plate arranged in the oil tank, the quality of the oil is guaranteed, and the subsequent oil cooling effect is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of granulators, in particular to a screw oil cooling mechanism for a plastic granulator. Background Art

[0002] Granulator is a molding machine that can make materials into specific shapes. It is widely used in chemical, petrochemical, pharmaceutical, food, building materials, mining, metallurgy, environmental protection, printing and dyeing, ceramics, rubber, plastics and other fields. The recycling and resource development of waste plastics is a production method that stems from a deep understanding of the environment and resources, and reduces the pollution of waste plastics to the environment and the waste of resources. Realizing the recycling and resource development of waste plastics is a major event that benefits the country and the people.

[0003] At present, the screw speed of screw granulation is too fast, the metering section is too long, the friction is too large and the material stays for a long time. In order to avoid the degradation of molten materials, the metering section is cooled by cooling. This cooling method can better control the melt temperature in the barrel and ensure the granulation quality of the material at high output.

[0004] The existing granulator is equipped with an oil cooling mechanism at the front end of the screw conveyor to prevent the material from melting prematurely before being conveyed forward and causing blockage. However, when the oil in the existing oil cooling mechanism flows in the oil channel, some impurities are mixed into the oil, which makes it inconvenient to filter and clean the impurities in the oil, affecting subsequent use. Utility Model Content

[0005] The utility model aims to provide a screw oil cooling mechanism for a plastic granulator, so as to solve the problem in the prior art that when the oil in the existing oil cooling mechanism flows in the oil channel, some impurities are mixed into the oil, which makes it inconvenient to filter and clean the impurities in the oil, thus affecting subsequent use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a granulator body and a screw; a cooling cylinder is provided on the granulator body, the screw is arranged inside the granulator body, the screw extends to one side through the cooling cylinder, an oil tank is fixedly connected to the bottom of the granulator body, an extraction mechanism is provided on the top of the oil tank, a serpentine oil passage is provided inside the cooling cylinder, the extraction mechanism transports liquid into the serpentine oil passage, an oil drain passage is provided inside the oil tank, the oil drain passage is communicated with the serpentine oil passage, an oil heat sink is provided at the bottom of the granulator body, a finned radiator is provided inside the heat sink, an oil connecting pipe is connected to the top of the heat sink, the upper end of the connecting pipe extends to the interior of the cooling cylinder and is communicated with the other end of the oil drain passage, the heat sink and the oil tank are the same, and a filter plate is detachably connected to the inside of the oil tank.

[0007] Preferably, the extraction mechanism includes an oil pump, an oil guide pipe, and an extraction pipe. The oil pump is fixedly connected to the top of the oil tank, the oil outlet end of the oil pump is connected to the oil guide pipe, the oil inlet end of the oil pump is connected to the extraction pipe, the lower end of the extraction pipe extends to the interior of the oil tank, and the upper end of the oil guide pipe extends to the interior of the cooling cylinder and is connected to the other end of the serpentine oil channel.

[0008] Preferably, a through opening is provided between the heat dissipation box and the oil tank, and one side of the filter plate is located at one end of the through opening.

[0009] Preferably, the upper end of the filter plate is fixedly connected to a disassembly plate, the disassembly plate is located on the outer wall of the oil tank, and one end of the disassembly plate is inserted into the edge of the oil tank, and the lower end of the filter plate is fixedly connected to a sealing block, and the lower end of the sealing block is inserted into the inner wall of the oil tank.

[0010] Preferably, a groove matching the sealing block is formed on the inner wall of the oil tank, one end of the sealing block is inserted into the groove, a mounting groove is formed on the top of the oil tank, one end of the disassembly plate is inserted into the mounting groove, a rubber sealing ring is formed on the outer wall of the disassembly plate, and the rubber sealing ring is in contact with the oil tank mounting groove.

[0011] Preferably, a valve is provided on one side of the oil tank.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the cold oil flows in a ring shape inside the cooling cylinder, and the flow in the serpentine oil channel can slow down the speed at which the oil flows away inside the cooling cylinder, thereby cooling the screw inside the cooling cylinder, and controlling the temperature of the screw to prevent the screw temperature from being too high and causing the particles to melt. The cooled oil is connected to the oil tank through the heat sink, and the cooled oil flows into the oil tank, where the impurities contained in the oil are filtered through a filter plate provided in the oil tank, thereby ensuring the quality of the oil and preventing it from affecting the subsequent oil cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the cooling cylinder of the utility model from top view;

[0016] Figure 4 This is a schematic diagram of the structure of the serpentine oil passage of the utility model;

[0017] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure of A in .

[0018] In the figure: 1. granulator body; 2. cooling cylinder; 3. oil tank; 4. heat sink; 41. finned radiator; 5. oil pump; 6. disassembly plate; 7. serpentine oil channel; 8. oil guide pipe; 9. screw; 10. oil discharge channel; 11. filter plate; 12. through port; 13. sealing block; 14. connecting pipe; 15. extraction pipe; 16. valve; 17. extraction mechanism. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example

[0021] See also Figure 1-5 , as shown in the figure: This embodiment is a preferred implementation scheme in the present technical scheme, a plastic granulator screw oil cooling mechanism, comprising a granulator body 1, a screw 9; a cooling cylinder 2 is provided on the granulator body 1, the screw 9 is arranged inside the granulator body 1, and the screw 9 extends to one side through the cooling cylinder 2, and an oil tank 3 is fixedly connected to the bottom of the granulator body 1, and an extraction mechanism 17 is provided on the top of the oil tank 3. A serpentine oil passage 7 is opened inside the cooling cylinder 2, and the extraction mechanism 17 transports liquid into the serpentine oil passage 7, and an oil discharge passage 10 is provided inside the oil tank 3, and the oil discharge passage 10 is communicated with the serpentine oil passage 7. An oil heat sink 4 is provided at the bottom of the granulator body 1, and a finned radiator 41 is provided inside the heat sink 4. The top of the heat sink 4 is connected to an oil connecting pipe 14, and the upper end of the connecting pipe 14 extends to the interior of the cooling cylinder 2 and is communicated with the other end of the oil discharge passage 10. The heat sink 4 is the same as the oil tank 3, and a filter plate 11 is detachably connected to the inside of the oil tank 3.

[0022] like Figure 1 , 2 As shown, the extraction mechanism 17 includes an oil pump 5, an oil guide pipe 8, and an extraction pipe 15. The oil pump 5 is fixedly connected to the top of the oil tank 3. The oil outlet end of the oil pump 5 is connected to the oil guide pipe 8, and the oil inlet end of the oil pump 5 is connected to the extraction pipe 15. The lower end of the extraction pipe 15 extends to the interior of the oil tank 3, and the upper end of the oil guide pipe 8 extends to the interior of the cooling cylinder 2 and is connected to the other end of the serpentine oil passage 7. The extraction pipe 15 connected to the oil pump 5 extracts cold oil from the oil tank 3, and the oil is transported to the serpentine oil passage 7 opened in the cooling cylinder 2 through the oil guide pipe 8.

[0023] like Figure 2 , 5As shown, a through opening 12 is provided between the heat sink 4 and the oil tank 3, and a filter plate 11 is located at one end of the through opening 12. The through opening 12 provided between the heat sink 4 and the oil tank 3 is used to transport the oil in the heat sink 4 to the oil tank 3, and the oil entering the oil tank 3 is filtered through the filter plate 11 located at the through opening 12.

[0024] like Figure 2 , 5 As shown, the upper end of the filter plate 11 is fixedly connected to a disassembly plate 6, the disassembly plate 6 is located on the outer wall of the oil tank 3, and one end of the disassembly plate 6 is inserted into the edge of the oil tank 3, and the lower end of the filter plate 11 is fixedly connected to a sealing block 13, and the lower end of the sealing block 13 is inserted into the inner wall of the oil tank 3. The disassembly plate 6 provided on the upper end of the filter plate 11, and the disassembly plate 6 is inserted into the oil tank 3 and located outside the oil tank 3, is used to disassemble the filter plate 11 for cleaning and replacement.

[0025] like Figure 2 , 5 As shown, a groove matching the sealing block 13 is provided on the inner wall of the oil tank 3, one end of the sealing block 13 is inserted into the groove, a mounting groove is provided on the top of the oil tank 3, one end of the disassembly plate 6 is inserted into the mounting groove, a rubber sealing ring is provided on the outer wall of the disassembly plate 6, the rubber sealing ring is in contact with the mounting groove of the oil tank 3, the groove provided on the inner wall of the oil tank 3 is used for the sealing block 13 to be plugged into the inner wall of the oil tank 3, to seal the lower end of the filter plate 11, and the mounting groove provided on the top of the oil tank 3 is used for installing the disassembly plate 6.

[0026] like Figure 1 , 2 As shown, a valve 16 is provided on one side of the oil tank 3 .

[0027] In this embodiment, firstly, the various parts are installed, the cooling cylinder 2 is located at the feeding position of the granulator body 1, and the power supply is connected through the oil pump 5. The extraction pipe 15 connected to the oil pump 5 extracts oil from the inside of the oil tank 3, and the oil is transported to the inside of the cooling cylinder 2 through the oil guide pipe 8. The cooling cylinder 2 has a serpentine oil passage 7 opened inside, so that the cold oil flows in a circular manner inside the cooling cylinder 2. The flow in the serpentine oil passage 7 can slow down the speed of the oil flowing away inside the cooling cylinder 2, cool down the screw 9 inside the cooling cylinder 2, and control the temperature of the screw 9 to prevent the screw 9 from being too high in temperature and causing the pellets to melt;

[0028] The oil after absorbing heat is transported to the connecting pipe 14 through the oil discharge channel 10 at the bottom. The connecting pipe 14 transports the hot oil to the heat sink 4. The oil is cooled by contacting the finned radiator 41 provided in the heat sink 4. The cooled oil is connected to the oil tank 3 through the heat sink 4. The cooled oil flows into the oil tank 3 and is filtered of impurities contained in the oil through the filter plate 11 provided in the oil tank 3.

[0029] The disassembly plate 6 is connected to the top of the filter plate 11, and the disassembly plate 6 is located at the top of the oil tank 3. One end of the disassembly plate 6 is inserted into the inner edge of the oil tank 3 and is sealed by a rubber sealing ring.

[0030] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make some simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A screw oil cooling mechanism for a plastic granulator, comprising a granulator body (1) and a screw (9); characterized in that: The granulator body (1) is provided with a cooling cylinder (2), the screw (9) is arranged inside the granulator body (1), the screw (9) extends to one side through the cooling cylinder (2), the bottom of the granulator body (1) is fixedly connected to an oil tank (3), the top of the oil tank (3) is provided with an extraction mechanism (17), a serpentine oil passage (7) is opened inside the cooling cylinder (2), the extraction mechanism (17) transports liquid into the serpentine oil passage (7), and an oil discharge passage (10) is provided inside the oil tank (3). ), the oil drain passage (10) is connected to the serpentine oil passage (7), an oil heat sink (4) is arranged at the bottom of the granulator body (1), a finned radiator (41) is arranged inside the heat sink (4), the top of the heat sink (4) is connected to an oil connecting pipe (14), the upper end of the connecting pipe (14) extends to the interior of the cooling cylinder (2) and is connected to the other end of the oil drain passage (10), the heat sink (4) is the same as the oil tank (3), and a filter plate (11) is detachably connected to the interior of the oil tank (3).

2. A screw oil cooling mechanism for a plastic granulator according to claim 1, characterized in that: The extraction mechanism (17) comprises an oil pump (5), an oil guide pipe (8), and an extraction pipe (15); the oil pump (5) is fixedly connected to the top of the oil tank (3); the oil outlet end of the oil pump (5) is connected to the oil guide pipe (8); the oil inlet end of the oil pump (5) is connected to the extraction pipe (15); the lower end of the extraction pipe (15) extends into the interior of the oil tank (3); the upper end of the oil guide pipe (8) extends into the interior of the cooling cylinder (2) and is connected to the other end of the serpentine oil passage (7).

3. The screw oil cooling mechanism of a plastic granulator according to claim 1 is characterized in that: A through opening (12) is provided between the heat dissipation box (4) and the oil tank (3), and one side of the filter plate (11) is located at one end of the through opening (12).

4. The screw oil cooling mechanism of a plastic granulator according to claim 1 is characterized in that: The upper end of the filter plate (11) is fixedly connected to a disassembly plate (6), the disassembly plate (6) is located on the outer wall of the oil tank (3), and one end of the disassembly plate (6) is inserted into the edge of the oil tank (3); the lower end of the filter plate (11) is fixedly connected to a sealing block (13), and the lower end of the sealing block (13) is inserted into the inner wall of the oil tank (3).

5. A screw oil cooling mechanism for a plastic granulator according to claim 4, characterized in that: The inner wall of the oil tank (3) is provided with a groove matching the sealing block (13), one end of the sealing block (13) is inserted into the groove, the top of the oil tank (3) is provided with a mounting groove, one end of the disassembly plate (6) is inserted into the mounting groove, the outer wall of the disassembly plate (6) is provided with a rubber sealing ring, and the rubber sealing ring is in contact with the mounting groove of the oil tank (3).

6. A screw oil cooling mechanism for a plastic granulator according to claim 1, characterized in that: A valve (16) is provided on one side of the oil tank (3).

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