Condensing oil-removing plastic dryer

Abstract

The utility model discloses a kind of condensing type oil-removing plastic dryers, including base, material cylinder, fan, heater and cyclone condenser are equipped on base, inlet pipe and outlet pipe are equipped on material cylinder, the output end of heater is connected with inlet pipe, the input end of heater is connected with the output end of fan, the input end of fan is connected with the output end of cyclone condenser, the input end of cyclone condenser is connected with outlet pipe;Cyclone condenser includes shell, spiral condensing tube is equipped in shell, spiral condensing tube is connected with water chiller, outlet pipe is connected with the inner chamber of shell, the upper end of shell is equipped with air outlet pipe, one end of air outlet pipe is connected with the input end of fan, the lower end of shell is equipped with liquid outlet.The utility model can separate oil and gas in oil-gas mixture by cyclone condenser, avoid oil stain into fan, heater and other components, thereby prolong the service life of plastic dryer;Reduce the number of disassembly and cleaning, improve injection molding processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a condensation-type degreasing plastic dryer. Background Technology

[0002] Injection molding is currently the most common processing method for producing plastic products. The plastic raw materials used in injection molding are generally in granular form. Due to their susceptibility to moisture during transportation and storage, especially in the humid climate of southern regions where the raw materials contain a high amount of moisture, poor product quality and low yield are likely to occur during the melting and injection molding process. Therefore, before injection molding, a plastic dryer is usually used to dry and heat the plastic raw materials to ensure they are dry before injection molding.

[0003] With technological advancements, new types of modified plastics have emerged on the market, often containing mineral oil. Therefore, when drying these plastics in a plastic dryer, oil residue inevitably remains on the dryer. Existing plastic dryers lack oil separation devices, allowing the oil to remain inside. Over time, this can lead to oil leaks from mechanical components such as the dryer's fan, and even mechanical failures, impacting production efficiency. Current technology requires disassembling and cleaning the plastic dryer after a period of operation when drying these modified plastics, which is time-consuming, labor-intensive, and severely affects injection molding efficiency. Therefore, improvements to existing plastic dryers are necessary. Utility Model Content

[0004] To address some or all of the problems existing in the prior art, this utility model provides a condensation-type degreasing plastic dryer, including a base and a control box. The base is equipped with a material cylinder, a fan, a heater, and a cyclone condenser. The fan and heater are electrically connected to the control box. The material cylinder has a cavity for holding plastic. The material cylinder has an inlet pipe and an outlet pipe communicating with the cavity. The output end of the heater is connected to the inlet pipe, and the input end of the heater is connected to the output end of the fan. The cyclone condenser is connected to the output end of the cyclone condenser, and the input end of the cyclone condenser is connected to the air outlet pipe. The cyclone condenser includes a hollow outer shell, a spiral condenser tube inside the shell, a chiller connected to the outside of the spiral condenser tube, and the air outlet pipe is connected to the inner cavity of the shell and is located at the corresponding position on the upper end of the spiral condenser tube. The upper end of the shell is provided with an air outlet pipe, one end of which is connected to the input end of the fan, and the other end of which extends into the inner cavity of the shell. The lower end of the shell is provided with a liquid outlet.

[0005] As a further improvement of this utility model, a collection tank is provided on the outer shell at a position corresponding to the liquid outlet, and the collection tank is detachably connected to the outer shell.

[0006] As a further improvement of this utility model, the outer shell is provided with a water inlet connector and a water outlet connector, which are respectively connected to an ice water machine, and the water inlet connector and the water outlet connector are respectively connected to the spiral condenser tube.

[0007] As a further improvement of this utility model, the input end of the fan is provided with a filter, the output end of the filter is connected to the fan, and the input end of the filter is connected to the air outlet pipe.

[0008] As a further improvement of this utility model, an air dryer is provided on the base, the input end of the air dryer is connected to an external air compressor, and the output end of the air dryer is connected to the input end of the fan.

[0009] As a further improvement of this utility model, the end of the air inlet pipe away from the heater extends into the cavity, and the end of the air inlet pipe extending into the cavity is provided with a trumpet-shaped air outlet.

[0010] As a further improvement of this utility model, the upper end of the material cylinder has a feeding port, and the lower end of the material cylinder has a discharge port.

[0011] As a further improvement of this utility model, a gate is provided on the material cylinder at a position corresponding to the discharge port. The gate is detachably connected to the material cylinder and is used to seal the discharge port.

[0012] As a further improvement of this utility model, a transparent viewing window is provided on the side wall of the barrel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a cyclone condenser to separate oil and gas in the oil-gas mixture generated during the operation of a plastic dryer, preventing oil contamination from entering components such as the fan and heater, thereby extending the service life of the plastic dryer. It also reduces the frequency of disassembly and cleaning, improving injection molding efficiency. Before operation, a chiller is connected to the spiral condenser tube, which injects cold water into the tube. During processing, the host computer inputs the modified plastic into the cavity of the material cylinder. The control box controls the chiller, fan, and heater. The chiller injects cold water into the spiral condenser tube, the fan injects air into the heater, and the heated air flows into the cavity through the air inlet pipe to dry the plastic. The high-temperature exhaust gas (oil-gas mixture) after the plastic is dried will flow into the cyclone condenser through the exhaust pipe. After the high-temperature exhaust gas comes into contact with the spiral condenser, the gaseous oil in the exhaust gas will liquefy into liquid and then be discharged from the liquid outlet under its own gravity. The separated gas will then flow back into the fan through the exhaust pipe for recycling. Attached Figure Description

[0015] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0017] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the cyclone condenser in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the cyclone condenser in an embodiment of this utility model. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0022] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] like Figure 1-5 As shown, a condensation-type degreasing plastic dryer includes a base 1 and a control box 2. The control box 2 is externally powered. A control enclosure 3 is mounted on the base 1 and electrically connected to the control box 2. The control box 3 has a display screen and control buttons. The control buttons can be used to start or stop the plastic dryer, and the display screen shows the dryer's operating parameters and other information. A material cylinder 4, a fan 5, a heater 6, and a cyclone condenser 7 are fixedly mounted on the base 1. The fan 5 and the heater 6 are electrically connected to the control box 2, and the control buttons can be used to control the operation or shutdown of the fan 5 and the heater 6. The material cylinder 4 has a cavity 41 for holding plastic. An air inlet pipe 8 and an air outlet pipe 9, which are respectively connected to the cavity 41, are mounted on the material cylinder 4. The output end of the heater 6 is connected to the air inlet pipe 8, and the input end of the heater 6 is connected to the output end of the fan 5. The input end of the fan 5 is connected to the output end of the cyclone condenser 7, and the input end of the cyclone condenser 7 is connected to the air outlet pipe 9.

[0025] During operation, the host computer feeds the modified plastic into the cavity 41 inside the material cylinder 4. The control box 2 controls the operation of the fan 5 and the heater 6. The fan 5 injects air into the heater 6, and the heated air flows into the cavity 41 through the air inlet pipe 8 to dry the plastic. The exhaust gas (oil-gas mixture) generated after drying flows into the cyclone condenser 7 through the air outlet pipe 9. The cyclone condenser 7 separates the oil and gas in the exhaust gas. The separated liquid oil flows out of the cyclone condenser 7, while the separated gas flows back into the fan 5 for recycling.

[0026] This condensing degreasing plastic dryer uses a cyclone condenser 7 to separate the oil and gas in the oil-gas mixture generated during operation, preventing oil from entering components such as the fan 5 and heater 6, thereby extending the service life of the plastic dryer; it can also reduce the number of times the machine needs to be disassembled for cleaning and improve injection molding efficiency.

[0027] Specifically, such as Figure 4-5 As shown, the cyclone condenser 7 includes a hollow outer shell 71, which is fixedly mounted on the base 1. A spiral condenser tube 72 is provided inside the outer shell 71. The spiral condenser tube 72 is made of copper tube, which has good thermal conductivity. The spiral condenser tube 72 is connected to an ice water machine. The air outlet 9 is connected to the inner cavity of the outer shell 71 and is located at the corresponding position on the upper end of the spiral condenser tube 72. An exhaust pipe 73 is provided at the upper end of the outer shell 71. One end of the exhaust pipe 73 is connected to the input end of the fan 5, and the other end of the exhaust pipe 73 extends into the inner cavity of the outer shell 71. A liquid outlet 74 is provided at the lower end of the outer shell 71. During operation, the chiller delivers chilled water (below room temperature) into the spiral condenser tube 72. The exhaust gas (oil-gas mixture) generated after drying flows into the outer casing 71 through the exhaust pipe 9. The high-speed exhaust gas entering the outer casing 71 forms a cyclone. After the exhaust gas cyclone comes into contact with the spiral condenser tube 72, the oil in the exhaust gas will automatically liquefy into liquid oil upon contact with the cold air, thus achieving oil-gas separation. Then, the liquid oil falls into the liquid outlet 74 under its own gravity and is discharged from the outer casing 71. The separated gas flows into the fan 5 through the exhaust pipe 73 for recycling.

[0028] To facilitate the collection of liquid oil, a collection tank 10 is provided on the outer casing 71 at a position corresponding to the liquid outlet 74. The collection tank 10 is detachably connected to the outer casing 71. During operation, the liquid oil flows out of the outer casing 71 from the liquid outlet 74 due to its own gravity and then falls into the collection tank 10 for collection. When the collection tank 10 is full, the operator can remove the collection tank 10 from the outer casing 71, empty the oil, and then reinstall the collection tank 10 onto the outer casing 71 for continued use.

[0029] The outer casing 71 is equipped with a water inlet connector 75 and a water outlet connector 76, which are respectively connected to an external chiller. The water inlet connector 75 and the water outlet connector 76 are respectively connected to the spiral condenser tube 72. By setting the water inlet connector 75 and the water outlet connector 76, the spiral condenser tube 72 can be connected to an external chiller, and then the chiller can supply chilled water below room temperature into the spiral condenser tube 72.

[0030] To ensure cleaner air entering the material cylinder 4, a filter 11 is installed at the input end of the blower 5. The output end of the filter 11 is connected to the blower 5, and the input end of the filter 11 is connected to the air outlet pipe 73. The filter 11 filters the gas flowing into the blower 5, removing large particles and other contaminants, thus making the air entering the material cylinder 4 cleaner. Any existing air filter 11 can be used, and this invention does not limit its structure.

[0031] To facilitate the replenishment of air into the material cylinder 4, an air dryer 12 is also installed on the base 1. The input end of the air dryer 12 is connected to an external air compressor, and the output end of the air dryer 12 is connected to the input end of the fan 5. During operation, the external air compressor delivers gas to the air dryer 12, where some moisture is removed from the air. The dried air then flows into the fan 5 and finally into the material cylinder 4 to dry the plastic.

[0032] The end of the air inlet pipe 8 furthest from the heater 6 extends into the cavity 41, and a flared air outlet 81 is provided at the end of the air inlet pipe 8 that extends into the cavity 41. By setting the flared air outlet, the contact area between the hot air and the plastic in the material cylinder 4 can be increased, thereby improving the drying efficiency.

[0033] The upper end of the material cylinder 4 is equipped with a feeding port 42. During operation, the feeding port 42 is connected to a host computer, which can transport plastic to the feeding port 42, and the plastic is injected into the cavity 41 inside the material cylinder 4 through the feeding port 42. The lower end of the material cylinder 4 is equipped with a discharge port 43. During operation, the discharge port 43 is connected to a slave computer, which can suck up the dried plastic from the material cylinder 4. Through the cooperation of the host computer and the slave computer, new plastic can be continuously injected into the cavity 41 inside the material cylinder 4; and the dried plastic can be discharged from the cavity 41 in a timely manner.

[0034] A gate 13 is provided on the material cylinder 4 at a position corresponding to the discharge port 43. The gate 13 is detachably connected to the material cylinder 4 and is used to seal the discharge port 43. The gate 13 seals the discharge port 43 to prevent plastic from flowing out of the discharge port 43 during the drying process. After the plastic in the cavity 41 has dried, the gate 13 can be pulled out, and then the lower machine will suck up the plastic in the cavity 41. After the plastic is discharged, the gate 13 can be reinserted into the material cylinder 4 to seal the discharge port 43.

[0035] To facilitate observation of the plastic inside the barrel 4, a transparent viewing window 44 is provided on the side wall of the barrel 4. Through the viewing window 44, the operator can visually check the drying status of the plastic inside the barrel 4; they can also check whether the plastic inside the barrel 4 is full when adding material, or check whether the plastic inside the barrel 4 has been completely discharged when discharging material.

[0036] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A condensation-type degreasing plastic dryer, characterized in that: The device includes a base and a control box. The base is equipped with a material cylinder, a fan, a heater, and a cyclone condenser. The fan and the heater are electrically connected to the control box. The material cylinder has a cavity for holding plastic. The material cylinder is equipped with an air inlet pipe and an air outlet pipe that are respectively connected to the cavity. The output end of the heater is connected to the air inlet pipe, the input end of the heater is connected to the output end of the fan, the input end of the fan is connected to the output end of the cyclone condenser, and the input end of the cyclone condenser is connected to the air outlet pipe. The cyclone condenser includes a hollow outer shell with a spiral condenser tube inside. The spiral condenser tube is connected to an ice water machine. The air outlet pipe is connected to the inner cavity of the outer shell and is located at the upper end of the spiral condenser tube. The upper end of the outer shell has an exhaust pipe, one end of which is connected to the input end of the fan, and the other end of which extends into the inner cavity of the outer shell. The lower end of the outer shell has a liquid outlet.

2. The condensation-type degreasing plastic dryer according to claim 1, characterized in that: A collection tank is provided on the outer casing at a position corresponding to the liquid outlet, and the collection tank is detachably connected to the outer casing.

3. The condensation-type degreasing plastic dryer according to claim 1, characterized in that: The outer casing is provided with a water inlet connector and a water outlet connector, which are respectively connected to an external chiller and connected to the spiral condenser tube.

4. The condensation-type degreasing plastic dryer according to claim 1, characterized in that: The fan has a filter at its input end, the filter's output end is connected to the fan, and the filter's input end is connected to the air outlet pipe.

5. The condensation-type degreasing plastic dryer according to claim 1, characterized in that: An air dryer is provided on the base. The input end of the air dryer is connected to an external air compressor, and the output end of the air dryer is connected to the input end of the fan.

6. The condensation-type degreasing plastic dryer according to claim 1, characterized in that: The end of the air inlet pipe away from the heater extends into the cavity, and the end of the air inlet pipe extending into the cavity is provided with a funnel-shaped air outlet.

7. The condensation-type degreasing plastic dryer according to any one of claims 1-6, characterized in that: The upper end of the material cylinder has a feeding port, and the lower end of the material cylinder has a discharge port.

8. The condensation-type degreasing plastic dryer according to claim 7, characterized in that: A gate is provided on the material cylinder at a position corresponding to the discharge port. The gate is detachably connected to the material cylinder and is used to seal the discharge port.

9. The condensation-type degreasing plastic dryer according to claim 7, characterized in that: The side wall of the barrel is provided with a transparent viewing window.

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