An energy-saving plastic granulator

Abstract

The invention relates to the technical field of plastic granulators, and specifically provides an energy-saving plastic granulator, the granulator comprising: an extrusion unit, used for extruding melted plastic; an extrusion head, the extrusion head comprising a water storage shell and an extrusion block, the extrusion block being located on the inner side of the water storage shell, a heating chamber for storing water being arranged between the water storage shell and the extrusion block, a plurality of extrusion channels arranged in parallel being arranged on the extrusion block, the extrusion unit extruding the melted plastic into the extrusion channel, the extrusion block conducting heat to heat the water in the heating chamber; a water cooling component and a pelletizing component; an oscillation component located between the water cooling component and the pelletizing component, the oscillation component comprising a pneumatic telescopic component and an oscillation rod, the heating chamber being connected to the pneumatic telescopic component through a pipeline; the invention reduces energy consumption in a granulation process, and improves the energy saving performance of the granulator.

Description

Technical Field

[0001] The invention relates to the technical field of plastic granulators, in particular to an energy-saving plastic granulator. Background Art

[0002] When plastic materials are input into the factory as raw materials, they are packaged in the form of granules, which makes it easier for the factory to process and use them in subsequent procedures.

[0003] The current working process of the plastic granulator is to extrude the prepared plastic into a linear shape, and then cool the linear plastic and cut it to form a granular shape. In the current process flow, the plastic line is cooled by water cooling for preliminary cooling, and then air cooling is used for secondary cooling while drying the water. This method consumes a lot of electric energy during the production process, such as heating energy consumption during extrusion, cooling energy consumption for cooling water, supplementing energy consumption for cooling water, energy consumption for air cooling, and energy consumption during cutting, which makes the current granulation process energy consumption large and the enterprise cost high. Therefore, this embodiment discloses an energy-saving plastic granulator. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-saving plastic granulator to solve the problem of high energy consumption of the current plastic granulator.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An energy-saving plastic granulator, the granulator comprising:

[0007] An extrusion unit, used for extruding the molten plastic;

[0008] An extrusion head, the extrusion head comprising a water storage shell and an extrusion block, the extrusion block being located inside the water storage shell, a heating chamber for storing water being provided between the water storage shell and the extrusion block, a plurality of extrusion channels arranged in parallel being provided on the extrusion block, the extrusion unit extruding the melted plastic into the extrusion channels, and the extrusion block conducting heat to heat the water in the heating chamber;

[0009] A water cooling component and a pelletizing component, wherein the plastic flowing out of the extrusion block enters the water cooling component and is cooled and hardened in the water cooling component, and the hardened plastic enters the pelletizing component from the water cooling component and is cut into pellets in the pelletizing component;

[0010] An oscillation component is located between the water cooling component and the pelletizing component, and the oscillation component includes a pneumatic telescopic component and an oscillation rod. The heating chamber is connected to the pneumatic telescopic component through a pipeline. The water vapor in the heating chamber enters the pneumatic telescopic component and pushes the output end of the pneumatic telescopic component to rise and fall. The output end of the pneumatic telescopic component drives the oscillation rod to intermittently impact the linear plastic between the water cooling component and the pelletizing component to cause it to vibrate.

[0011] Furthermore, an air valve is provided on the pipeline between the water storage shell and the oscillation component.

[0012] Furthermore, the water storage housing is also provided with:

[0013] A water level sensor, used for detecting the water level in the water storage housing;

[0014] A pressure monitoring sensor for monitoring the water vapor pressure in the water storage housing;

[0015] The water level sensor and the pressure monitoring sensor are electrically connected to a controller. When the controller detects that the water level is lower than a preset value, it controls the connected water replenishing device to fill water into the water storage shell. When the controller detects that the air pressure reaches a preset value, it opens the air valve.

[0016] Furthermore, a pressure relief valve is provided on the water storage shell for discharging water vapor when the pressure in the water storage shell exceeds a preset value.

[0017] Furthermore, the pneumatic telescopic assembly comprises:

[0018] A steam pipe, wherein the steam pipe is cylindrical with an opening at one end, an air inlet is provided at the end of the steam pipe away from the opening, and a grid-shaped air outlet is provided around the steam pipe at a position close to the opening;

[0019] A limiting cover plate, the limiting cover plate is sealed and connected to the mouth of the steam pipe, and a guide pipe is arranged at the center of the limiting cover plate;

[0020] The piston is slidably connected to the inside of the steam pipe, the piston rod of the piston is slidably connected to the guide pipe, and the oscillation rod is connected to the end of the piston rod away from the piston.

[0021] Furthermore, the oscillation rod is a square frame structure, and the hardened plastic passes through the oscillation rod.

[0022] Furthermore, the pneumatic telescopic components are provided in two groups, the pneumatic telescopic components are located at both ends of the oscillation rod, and the pneumatic telescopic components and the oscillation rod are hinged.

[0023] Furthermore, the granulator also includes:

[0024] The limiting frames located on both sides of the oscillating component are used to limit the hardened plastic.

[0025] Furthermore, the granulator also includes:

[0026] A steam recycling component is connected to the oscillation component and is used to collect water vapor discharged from the oscillation component. A heat exchange component is arranged in the steam recycling component, and the heat exchange component is connected to the water supply pipe on the water storage shell. The heat exchange component is used to heat the water entering the water storage shell.

[0027] Furthermore, the steam recycling component also includes:

[0028] The shell is a square frame, the heat exchange component is located on the inner side of the shell, the shell is mounted on the pneumatic telescopic component, the air outlet on the pneumatic telescopic component is located in the shell, and the bottom of the shell is provided with a discharge port for discharging used water vapor and water.

[0029] In summary, the present invention has the following beneficial effects compared with the prior art:

[0030] The energy-saving plastic granulator disclosed in the embodiment of the present invention heats water with melted plastic to generate water vapor, and uses the water vapor to drive the oscillation component to drive the hardened plastic to vibrate, so as to remove water attached to the hardened plastic, thereby reducing energy consumption in the granulation process and improving the energy saving of the granulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the energy-saving plastic granulator disclosed in Example 1 of the present invention.

[0032] Figure 2 This is a schematic structural diagram of an extrusion head in an energy-saving plastic granulator disclosed in Example 1 of the present invention.

[0033] Figure 3 for Figure 2 Sectional view of AA.

[0034] Figure 4 This is a schematic diagram of the structure of the pneumatic telescopic assembly in the energy-saving plastic granulator disclosed in Example 1 of the present invention.

[0035] Figure 5 This is a front view of the pneumatic telescopic assembly in the energy-saving plastic granulator disclosed in Example 1 of the present invention.

[0036] Figure 6 for Figure 5 Cross-sectional view of BB.

[0037] Figure 7 This is a schematic structural diagram of a limiting frame in an energy-saving plastic granulator disclosed in Example 1 of the present invention.

[0038] Figure 8 This is a schematic structural diagram of the energy-saving plastic granulator disclosed in Example 2 of the present invention.

[0039] Fig. 9 This is a schematic structural diagram of a steam recycling component in an energy-saving plastic granulator disclosed in Example 2 of the present invention.

[0040] Fig.10 This is a schematic diagram of the structure of the heat exchange component in the energy-saving plastic granulator disclosed in Example 2 of the present invention.

[0041] Reference numerals:

[0042] 100, extrusion unit; 200, extrusion head; 210, water storage shell; 211, first connection end; 212, middle section; 213, second connection end; 220, extrusion block; 221, extrusion channel; 222, extrusion groove; 300, water cooling component; 400, oscillation component; 410, pneumatic telescopic component; 411, steam pipe; 412, limit cover plate; 413, piston; 420, oscillation rod; 500, limit frame; 510, bracket body; 520, roller; 521, roller; 600, pelletizing component; 700, base; 800, steam recycling component; 810, shell; 811, fixing hole; 820, heat exchange component; 821, heat exchange switch; 822, connecting pipe. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] like Figure 1 As shown, an energy-saving plastic granulator provided by one embodiment of the present invention comprises:

[0045] An extrusion unit 100, used for extruding the melted plastic;

[0046] An extrusion head 200, the extrusion head 200 comprises a water storage shell 210 and an extrusion block 220, the extrusion block 220 is located inside the water storage shell 210, a heating chamber for storing water is provided between the water storage shell 210 and the extrusion block 220, a plurality of extrusion channels 221 arranged in parallel are provided on the extrusion block 220, the extrusion unit 100 extrude the melted plastic into the extrusion channel 221, the extrusion block 220 conducts heat to heat the water in the heating chamber, thereby generating water vapor in the heating chamber;

[0047] The water cooling component 300 and the pelletizing component 600, the plastic flowing out of the extrusion block 220 enters the water cooling component 300, and is cooled and hardened in the water cooling component 300, and the hardened plastic enters the pelletizing component 600 from the water cooling component 300, and is cut into pellets at the pelletizing component 600;

[0048] The oscillation component 400 is located between the water cooling component 300 and the pelletizing component 600, and the oscillation component 400 includes a pneumatic telescopic component 410 and an oscillation rod 420. The heating chamber is connected to the pneumatic telescopic component 410 through a pipeline. The water vapor in the heating chamber enters the pneumatic telescopic component 410 and pushes the output end of the pneumatic telescopic component 410 to rise and fall. The output end of the pneumatic telescopic component 410 drives the oscillation rod 420 to intermittently impact the linear plastic between the water cooling component 300 and the pelletizing component 600 to cause it to vibrate.

[0049] In this embodiment, the plastic raw material is melted at the extrusion unit 100 and then squeezed into the extrusion block 220 by the extrusion unit 100. The plastic flowing out of the extrusion block 220 falls into the water cooling component 300 and is cooled and hardened at the water cooling component 300. The hardened plastic enters the pelletizing component 600 and is cut into pellets by the pelletizing component 600. Since the temperature of the plastic entering the extrusion block 220 is about 170 degrees Celsius, the temperature entering the extrusion head 200 can heat the water between the water storage housing 210 and the extrusion block 220 (i.e., the heating chamber), so that The water between the water storage shell 210 and the extrusion block 220 boils and generates water vapor, which enters the pneumatic telescopic component 410 through a pipe and pushes the output end of the pneumatic telescopic component 410 to move up and down, thereby driving the oscillation rod 420 to move up and down. When the oscillation rod 420 moves up and down, the oscillation rod 420 intermittently hits the hardened plastic, causing the hardened plastic to vibrate. During the vibration of the plastic, the water attached to it can be shaken off and its surface can be dried, thereby achieving the purpose of drying, eliminating the structure of drying the plastic by wind in the traditional structure, and reducing the energy consumption of the traditional granulator.

[0050] The energy-saving plastic granulator disclosed in the embodiment of the present invention heats water with melted plastic to generate steam, and uses the steam to drive the oscillation component 400 to vibrate the hardened plastic to remove water attached to the hardened plastic, thereby reducing energy consumption during the granulation process and improving the energy saving of the granulator.

[0051] Specifically, in this embodiment, the extrusion unit 100 is a prior art, such as a screw machine, the extrusion unit 100 squeezes the melted plastic into the extrusion block 220 in the extrusion head 200, and the melted plastic flows linearly from the extrusion block 220 to the water cooling component 300, the water cooling component 300 is a prior art, the water cooling component 300 includes a water tank and a water circulation device, the water in the water tank is always maintained at 28 degrees, so that the water entering the water tank can quickly cool the plastic, the water circulation device discharges the water in the water tank and injects low-temperature water into the water tank.

[0052] As a preferred implementation in this embodiment, Figure 2 and Figure 3 As shown, the extrusion block 220 is a flat block, and the extrusion channel 221 is a plurality of through-hole structures arranged on the extrusion block 220. In this embodiment, the extrusion grooves 222 are provided with six, and the six extrusion grooves 222 are arranged in a row. One end of the extrusion groove 222 is provided with a step structure, and the other end is provided with a flange structure. The water storage shell 210 includes a first connecting end 211, a middle section 212 and a second connecting end 213. The first connecting end 211, the middle section 212 and the second connecting end 213 are fixedly connected by welding. The first connecting end 211 is provided with a round flat hole. The middle section 212 is a cylindrical structure with openings at both ends, the second connection end 213 is a flange structure with a flat hole, the extrusion block 220 is connected to the water storage shell 210 through the flange holes on the first connection end 211 and the second connection end 213 and is fixedly connected to the water storage shell 210 by bolts, and a sealing gasket and a sealant are also provided at the connection between the water storage shell 210 and the extrusion block 220 for sealing the water storage shell 210 and the extrusion block 220. In some other embodiments, the water storage shell 210 and the extrusion block 220 can also be fixedly connected by welding;

[0053] The water storage housing 210 is connected with a water supply pipe and a steam outlet pipe. The water supply pipe is connected with a water supply device for intermittently supplying water to the water storage housing 210, so as to maintain the water level in the water storage housing 210 so as to submerge the extrusion block 220. The steam outlet pipe is connected to the oscillating assembly 400 for supplying steam to the oscillating assembly 400.

[0054] As a preferred implementation in this embodiment, a gas valve is further provided on the pipeline between the steam outlet pipe and the oscillation component 400 to control the opening / closing of the pipeline, and the gas valve is a solenoid valve;

[0055] A water level sensor and a pressure monitoring sensor are also provided in the water storage shell 210. The water level sensor is used to detect the water level in the water storage shell 210, and the pressure monitoring sensor is used to monitor the water vapor pressure in the water storage shell 210. The water level sensor and the pressure monitoring sensor are also electrically connected to a controller, and the controller is a PLC controller or a computer. When the water level sensor detects that the water level is lower than a preset value, the controller controls the water replenishing device to fill water into the water storage shell 210. When the pressure monitoring sensor detects that the air pressure reaches a preset value, the controller opens the air valve. The water storage shell 210 is also provided with a pressure relief valve, which is used to discharge water vapor when other pressures in the water storage shell 210 exceed a preset value.

[0056] As a preferred implementation in this embodiment, Figures 4 to 6 As shown, the pneumatic telescopic assembly 410 includes:

[0057] A steam pipe 411, wherein the steam pipe 411 is cylindrical with an opening at one end, an air inlet is provided at the end of the steam pipe 411 away from the opening, and a grid-shaped air outlet is provided around the steam pipe 411 at a position close to the opening;

[0058] A limiting cover plate 412, wherein the limiting cover plate 412 is sealed and connected to the mouth of the steam pipe 411, and a guide pipe is provided at the center of the limiting cover plate 412;

[0059] A piston 413, wherein the piston 413 is slidably connected to the inside of the steam pipe 411, a piston rod of the piston 413 is slidably connected to the inside of the guide pipe, and the oscillation rod 420 is connected to an end of the piston rod away from the piston 413;

[0060] In this embodiment, water vapor enters the steam pipe 411, and the pressure in the steam pipe 411 gradually increases. When the pressure increases to a preset pressure, the piston 413 is lifted up, so that the piston 413 slides in the steam pipe 411. When the piston 413 slides to a position where an air outlet is provided, water vapor is discharged from the air outlet, so that the pressure in the steam pipe 411 decreases. The piston 413 falls under the action of gravity, thereby sealing the steam pipe 411 again. The steam pipe 411 is continuously filled with water vapor, so that the pressure in the steam pipe 411 changes from increase to decrease to increase, so that the piston 413 slides in the steam pipe 411, so that the piston rod performs a lifting motion, and the piston rod drives the oscillation rod 420 to perform a lifting motion, so that the oscillation rod 420 can hit the plastic.

[0061] Preferably, the end of the steam pipe 411 away from its mouth is also provided with a supporting foot;

[0062] like Figure 1 As shown, the oscillation rod 420 is a square frame structure, and the hardened plastic passes through the oscillation rod 420. During the lifting and lowering process of the oscillation rod 420, the oscillation rod 420 can hit the plastic no matter it is rising or falling, thereby causing it to vibrate;

[0063] Preferably, Figure 1 As shown, the pneumatic telescopic assembly 410 is provided with two groups, and the pneumatic telescopic assembly 410 is located at both ends of the oscillation rod 420, and the pneumatic telescopic assembly 410 and the oscillation rod 420 are hinged.

[0064] As a preferred implementation in this embodiment, the granulator further includes:

[0065] The limiting frames 500 located on both sides of the oscillating assembly 400 are used to limit the hardened plastic;

[0066] like Figure 7 As shown, the limiting frame 500 includes:

[0067] A bracket body 510, wherein the bracket body 510 is a U-shaped bracket;

[0068] Two rollers 520 are arranged in parallel, and the rollers 520 are rotatably connected to the two ends of the bracket body 510. The rollers 520 are provided with a plurality of rollers 521, and the rollers 521 are provided with an annular groove;

[0069] In this embodiment, the hardened plastic passes between two rollers 520 and is located in the annular groove, so that the hardened plastic can be prevented from being entangled when it vibrates. The rollers 520 are rotatably connected to the bracket body 510 through a bearing structure.

[0070] As a preferred implementation in this embodiment, the granulator further includes:

[0071] A base 700, on which the extrusion unit 100, the extrusion head 200, the water cooling assembly 300, the oscillating assembly 400, the limiting frame 500 and the pelletizing assembly 600 are all fixedly mounted;

[0072] In this embodiment, the pelletizing assembly 600 and the base 700 are prior art, and the pelletizing assembly 600 cuts linear plastic into pellets.

[0073] like Figures 8 to 10 As shown, as another embodiment of the present invention, this embodiment is different from embodiment 1 in that the granulator further comprises:

[0074] A steam recycling component 800, which is connected to the oscillating component 400 and is used to collect water vapor discharged from the oscillating component 400. A heat exchange component 820 is provided in the steam recycling component 800. The heat exchange component 820 is connected to the water replenishment pipe on the water storage shell 210. The water of the water replenishment device is input into the water storage shell 210 through the heat exchange component 820. The heat exchange component 820 is used to heat the water entering the water storage shell 210, thereby further reducing energy waste;

[0075] Specifically, Fig. 9 and Fig.10 As shown, the steam recycling component 800 also includes:

[0076] The housing 810 is a square frame, the heat exchange assembly 820 is located inside the housing 810, the housing 810 is sleeved on the pneumatic telescopic assembly 410, the air outlet on the pneumatic telescopic assembly 410 is located inside the housing 810, and the bottom of the housing 810 is provided with a discharge port for discharging the used water vapor and water;

[0077] The housing 810 is provided with a fixing hole 811, the fixing hole 811 is sleeved on the steam pipe 411, and the fixing hole 811 is fixed to the steam pipe 411 by screws or interference fit;

[0078] The heat exchange assembly 820 includes:

[0079] Multiple heat exchange switches 821;

[0080] Two connecting pipes 822, the two connecting pipes 822 are respectively connected to the two ends of the heat exchange switch 821, the connecting pipes 822 are provided with pipe interfaces, and the heat exchange switch 821 is connected to the connecting pipes 822;

[0081] In this embodiment, the heat exchange switch 821 and the connecting pipe 822 are both copper tubes. The heat exchange switch 821 is fixed to the connecting pipe 822 by welding. The connecting pipe 822 is a square tube. The pipe interface is used to connect the water supply pipe and the water supply device. The shell 810 and the heat exchange assembly 820 are fixedly connected by welding.

[0082] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0083] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0084] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving plastic granulator, characterized in that: The granulator comprises: An extrusion unit, used for extruding the molten plastic; An extrusion head, the extrusion head comprising a water storage shell and an extrusion block, the extrusion block being located inside the water storage shell, a heating chamber for storing water being provided between the water storage shell and the extrusion block, a plurality of extrusion channels arranged in parallel being provided on the extrusion block, the extrusion unit extruding the melted plastic into the extrusion channels, and the extrusion block conducting heat to heat the water in the heating chamber; A water cooling component and a pelletizing component, wherein the plastic flowing out of the extrusion block enters the water cooling component and is cooled and hardened in the water cooling component, and the hardened plastic enters the pelletizing component from the water cooling component and is cut into pellets in the pelletizing component; An oscillation component is located between the water cooling component and the pelletizing component, and the oscillation component includes a pneumatic telescopic component and an oscillation rod. The heating chamber is connected to the pneumatic telescopic component through a pipeline. The water vapor in the heating chamber enters the pneumatic telescopic component and pushes the output end of the pneumatic telescopic component to rise and fall. The output end of the pneumatic telescopic component drives the oscillation rod to intermittently impact the linear plastic between the water cooling component and the pelletizing component to cause it to vibrate.

2. The energy-saving plastic granulator according to claim 1, characterized in that: An air valve is also arranged on the pipeline between the water storage shell and the oscillation component.

3. The energy-saving plastic granulator according to claim 2, characterized in that: The water storage housing is also provided with: A water level sensor, used for detecting the water level in the water storage housing; A pressure monitoring sensor for monitoring the pressure of water vapor in the water storage housing; The water level sensor and the pressure monitoring sensor are electrically connected to a controller. When the controller detects that the water level is lower than a preset value, it controls the connected water replenishing device to fill water into the water storage shell. When the controller detects that the air pressure reaches a preset value, it opens the air valve.

4. The energy-saving plastic granulator according to claim 2, characterized in that: The water storage shell is also provided with a pressure relief valve for discharging water vapor when the pressure in the water storage shell exceeds a preset value.

5. The energy-saving plastic granulator according to claim 1, characterized in that: The pneumatic telescopic assembly comprises: A steam pipe, wherein the steam pipe is cylindrical with an opening at one end, an air inlet is provided at the end of the steam pipe away from the opening, and a grid-shaped air outlet is provided around the steam pipe at a position close to the opening; A limiting cover plate, the limiting cover plate is sealed and connected to the mouth of the steam pipe, and a guide pipe is arranged at the center of the limiting cover plate; The piston is slidably connected to the inside of the steam pipe, the piston rod of the piston is slidably connected to the guide pipe, and the oscillation rod is connected to the end of the piston rod away from the piston.

6. The energy-saving plastic granulator according to claim 5, characterized in that: The oscillation rod is a square frame structure, and the hardened plastic passes through the oscillation rod.

7. The energy-saving plastic granulator according to claim 6, characterized in that: The pneumatic telescopic components are provided in two groups, and the pneumatic telescopic components are located at two ends of the oscillation rod, and the pneumatic telescopic components and the oscillation rod are hinged.

8. The energy-saving plastic granulator according to any one of claims 1 to 7, characterized in that: The granulator also includes: The limiting frames located on both sides of the oscillating component are used to limit the hardened plastic.

9. The energy-saving plastic granulator according to any one of claims 1 to 7, characterized in that: The granulator also includes: A steam recycling component is connected to the oscillation component and is used to collect water vapor discharged from the oscillation component. A heat exchange component is arranged in the steam recycling component, and the heat exchange component is connected to the water supply pipe on the water storage shell. The heat exchange component is used to heat the water entering the water storage shell.

10. The energy-saving plastic granulator according to claim 9, characterized in that: The steam recycling assembly also includes: The shell is a square frame, the heat exchange component is located on the inner side of the shell, the shell is mounted on the pneumatic telescopic component, the air outlet on the pneumatic telescopic component is located in the shell, and the bottom of the shell is provided with a discharge port for discharging used water vapor and water.

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