CN108748842B

CN108748842B - EPS mixing device and control method thereof

Info

Publication number: CN108748842B
Application number: CN201810469157.7A
Authority: CN
Inventors: 甘春勇; 王谊
Original assignee: Jianhu Shanggang Industrial Park Service Co Ltd
Current assignee: Jianhu Shanggang Industrial Park Service Co ltd
Priority date: 2018-05-16
Filing date: 2018-05-16
Publication date: 2020-12-29
Anticipated expiration: 2038-05-16
Also published as: CN108748842A

Abstract

The invention relates to the technical field of plastic production, in particular to an EPS mixing device and a control method thereof, wherein a feeding pipe is arranged above a device body, a baffle is arranged in the device body, the baffle divides the interior of the device body into a first treatment tank and a second treatment tank, a plurality of support rods are vertically arranged in the first treatment tank, the plurality of support rods are provided with rubber springs, an inclined sieve plate is arranged above the plurality of support rods, the sieve plate is positioned below the feeding pipe, and one end of the sieve plate is aligned to the second treatment tank; an eccentric wheel used for vibrating the sieve plate is arranged in the first treatment tank, a driving shaft penetrates through the eccentric wheel, two ends of the driving shaft are arranged on the device body, and the driving shaft is driven by a first motor; a stirring device is arranged in the second treatment tank; the invention can separately stir and mix the beads after screening, thereby improving the foaming effect.

Description

EPS mixing device and control method thereof

Technical Field

The invention relates to the technical field of plastic production, in particular to an EPS material mixing device and a control method thereof.

Background

Polystyrene foam, EPS for short, is formed by foaming polystyrene particles, wherein the polystyrene particles mainly contain polystyrene, soluble pentane expansion components and a fire retardant. During the molding process of EPS, pentane in polystyrene particles is gasified by heating, and the particles are expanded to form a plurality of closed cavities, and the uniform closed cavity structure determines that the EPS has many properties which are not possessed by other materials.

The raw material beads are softened when heated to 92 ℃ or higher by steam in a continuous or batch prefoamer, and the volume of the volatile dissipation particles of the foaming agent is gradually expanded to a desired ratio or gram weight. The stable multiplying power is the guarantee of obtaining the fixed shaping condition, the shaping quality can be guaranteed, because the prefoaming condition is different, in allowing the foaming speed, adjust prefoaming temperature, steam pressure, feed rate and foaming multiplying power appropriately in order to obtain satisfactory result.

EPS is generally processed through several processes of pre-foaming, round-cooking and molding, wherein in the pre-foaming process, polymer particles containing a foaming agent are softened under the heating condition, and the foaming agent is volatilized. The result is an expansion within each bead, forming a plurality of cells. The number and final density of cells are controlled by the heating temperature and heating time, the pre-foaming process is mainly completed by a pre-foaming machine at present, the operation of the pre-foaming machine is complicated, the weight of the beads thrown into the machine cannot be accurately weighed during the feeding process of the pre-foaming machine, the beads with different diameters cannot be classified before foaming, and if the beads with different diameters are mixed for pre-foaming, the foaming effect and the foaming capacity of the beads can be influenced.

Disclosure of Invention

The invention provides an EPS material mixing device and a control method thereof, which can overcome certain defect or defects in the prior art.

The EPS material mixing device comprises a device body, wherein a feeding pipe is arranged above the device body, a baffle is arranged in the device body, the baffle divides the interior of the device body into a first treatment groove and a second treatment groove, a plurality of support rods are vertically arranged in the first treatment groove, the support rods are provided with rubber springs, an inclined sieve plate is arranged above the support rods, the sieve plate is positioned below the feeding pipe, and one end of the sieve plate is aligned to the second treatment groove; an eccentric wheel used for vibrating the sieve plate is arranged in the first treatment tank, a driving shaft penetrates through the eccentric wheel, two ends of the driving shaft are arranged on the device body, and the driving shaft is driven by a first motor; a stirring device is arranged in the second treatment tank.

In the EPS mixing device, the beads enter the sieve plate in the device body from the feeding pipe, the sieve plate can sieve the beads, and the sieve plate is inclined, so that large beads flow on the sieve plate until flowing into the second treatment tank due to gravity, and small beads fall into the first treatment tank after being screened by the sieve plate, so that the beads with different sizes are effectively screened for subsequent bead pre-foaming, the beads with different sizes are separated for treatment, and the pre-foaming effect can be effectively improved. The driving shaft in the first processing groove drives the eccentric wheel to rotate, and the eccentric wheel rotates to drive the sieve plate to vibrate, so that the beads are screened.

Preferably, the bottom end of the eccentric is located at the bottom of the first treatment tank, and a plurality of stirring rods are vertically arranged on the plane of the eccentric.

In the EPS material mixing device, the bottom end of the eccentric wheel is positioned at the bottom of the first treatment tank, so that the diameter of the eccentric wheel is larger, the rotation of the eccentric wheel can stir small beads positioned in the first treatment tank, the plane of the eccentric wheel is vertically provided with the plurality of stirring rods, the rotation of the eccentric wheel drives the stirring rods to rotate, and the rotation of the eccentric wheel enables the stirring rods to eccentrically rotate around the driving shaft, so that the stirred and mixed effect of the small beads is improved, and the small beads in the first treatment tank can be stirred and mixed while being screened.

Preferably, a steam generator for supplying steam into the apparatus body is connected to one side of the apparatus body.

In the EPS mixing device, the steam generator can convey steam into the device body, so that the beads are heated and expanded.

Preferably, the stirring device comprises a rotating rod, a plurality of stirring blades are arranged on the periphery of the rotating rod, the stirring blades are located in the second treatment tank, the top end of the rotating rod is rotatably connected to the top surface of the device body, and the rotating rod is driven by a second motor.

In the EPS material mixing device, the stirring device can stir large beads in the second treatment tank, the second motor drives the rotating rod to rotate, the stirring blades on the rotating rod rotate around the rotating rod, and the stirring blades stir the large beads.

Preferably, a blocking cavity is arranged above the sieve plate, a plurality of sieve meshes are arranged on the bottom surface of the blocking cavity, the blocking cavity gradually inclines downwards from one end to the other end, one end of the blocking cavity is aligned to the feeding pipe, and the other end of the blocking cavity is aligned to the second treatment tank.

In the EPS material mixing device, the arrangement of the blocking cavity can prevent the beads from falling into the first treatment tank without screening, so that the screening accuracy is improved; the screen holes can allow small beads to pass through, but cannot allow large beads to pass through, so that the screening of the beads is realized.

Preferably, the bottom surface of the first treatment tank is provided with a first discharge hole, and the bottom surface of the second treatment tank is provided with a second discharge hole.

In the EPS material mixing device, the first discharge hole and the second discharge hole are arranged, so that the first processing groove and the second processing groove can discharge materials conveniently.

The control method of the EPS material mixing device comprises the following steps:

firstly, turning on a first motor to vibrate a sieve plate;

secondly, polystyrene beads containing foaming agents are added into the device body from a feeding pipe, the polystyrene beads fall onto a sieve plate, small beads fall into a first treatment groove after being screened, and large beads fall into a second treatment groove;

thirdly, starting a second motor to enable the stirring device to stir the large beads in the second treatment tank, wherein the small beads in the first treatment tank can be stirred by a stirring rod on the eccentric wheel;

fourthly, introducing steam into the device body through a steam generator, and enabling the temperature in the device body to be higher than 92 ℃ so that the beads are foamed in the device body;

fifthly, after foaming for 10-24h, taking out the foamed beads from the first discharging hole and the second discharging hole, rounding, and finally carrying out compression molding.

According to the control method of the EPS material mixing device, the polystyrene beads are screened and then are separately subjected to foaming treatment, so that the foaming effect can be better improved.

Preferably, the blowing agent is a mixture of n-pentane and isopentane.

The present invention also provides an EPS particle feeding apparatus and a control method thereof, which overcome some or some of the disadvantages of the prior art.

The EPS particle feeding device comprises a device body, wherein a feeding pipe is arranged above the device body, an installation plate is arranged above the feeding pipe, a pressure sensor for measuring pressure is arranged below the installation plate, and the pressure sensor is arranged on the device body; the mounting plate is provided with through holes which correspond to the feeding pipes up and down, a feeding hopper is arranged in the through holes, the section of the feeding hopper is rectangular, the upper part of the feeding hopper can be opened, the lower part of the feeding hopper can be closed, the feeding hopper is divided into a left hopper and a right hopper, and the inner side of the right hopper is sleeved on the inner side of the left hopper; the left lower edge of the left hopper and the right lower edge of the right hopper are respectively and rotatably connected to the side wall of the through hole.

In the EPS particle feeding device, the beads can enter the device body from the feeding pipe for foaming, then fall into the feeding hopper, at the moment, the pressure sensor detects a pressure signal and sends the pressure signal to the controller, and after the controller performs operation processing, the display connected with the controller displays gravity; the feeding hopper is divided into a left hopper and a right hopper, the left hopper and the right hopper can rotate, when the bottom surface of the left hopper and the bottom surface of the right hopper are attached together, the top surface of the feeding hopper is open, the bottom surface of the feeding hopper is in a closed state, then the feeding hopper can be charged, and the weight is weighed through the pressure sensor, so that the weighing mode is more accurate; when left hopper bottom surface and right hopper bottom surface part, when edge and right hopper top surface right edge laminating in the left side hopper top surface, the bead can fall into this internally of device, and the top surface of feeder hopper is the closure state, and this can prevent that the foreign matter from falling into this internally of device, need not manually with the lid to cover the inlet pipe and guarantee that this internal can increase pressure of device, save the process, convenient operation. The invention realizes the weighing of the beads and the sealing of the feeding pipe by the opening and closing of the top surface and the bottom surface of the feeding hopper.

Preferably, a material blocking device is arranged below the feed hopper, the section of the material blocking device is in an isosceles triangle shape, the upper part of the material blocking device is communicated with the inner cavity of the feed hopper, and the lower part of the material blocking device can be sealed; the material blocking device is divided into a first material blocking device and a second material blocking device, the first material blocking device is connected below the left hopper, the second material blocking device is connected below the right hopper, and the inner side of the second material blocking device is sleeved on the inner side of the first material blocking device.

In the EPS particle feeding device, the material blocking device with the isosceles triangle-shaped section replaces the bottom surface of the feeding hopper, so that more beads can be filled in the feeding hopper, and in addition, when the top surface of the feeding hopper is closed, the first material blocking device and the second material blocking device of the material blocking device are respectively attached to the inner wall of the feeding pipe, so that the beads in the feeding hopper cannot be clamped and all fall into the device body.

As preferred, all be equipped with the installation cavity on the lateral wall about the through-hole, be equipped with the round bar in the installation cavity, the round bar both ends are rotationally installed respectively on the cavity wall and the round bar is by the third motor drive around the installation cavity, left lower edge of left hopper and right lower edge of right hopper fixed connection respectively on the round bar that corresponds.

In the EPS particle feeding device, the rotation of the third motor drives the round rods to rotate, and the left hopper and the right hopper connected with the corresponding round rods rotate along with the round rods, so that the top surface and the bottom surface of the feeding hopper can be automatically closed.

Preferably, the height of the cross section of the material blocking device is equal to that of the cross section of the feed hopper.

In the EPS particle feeding device, the height of the section of the material blocking device is equal to that of the section of the feeding hopper, so that the top surface of the feeding hopper is just in a closed state when the first material blocking device and the second material blocking device are respectively attached to the inner wall of the feeding pipe.

Preferably, the diameter of the round rod is on the same plane with the corresponding side of the through hole.

In the EPS particle feeding device, the diameter of the round rod and the side surface corresponding to the through hole are on the same plane, so that the first material blocking device and the second material blocking device in the material blocking device can be tightly attached to the inner wall of the feeding pipe.

Preferably, the third motor is mounted outside the mounting plate.

The control method of the EPS particle feeding device comprises the following steps:

controlling a third motor to enable the upper part of the feed hopper to be in an open state, and a sealing device is arranged below the material blocking device;

keeping the pressure sensor in a working state, and enabling a display matched with the pressure sensor to display that the weight is 0;

adding polystyrene beads containing foaming agent from a feed hopper, checking the weight of the polystyrene beads from the display, and increasing or decreasing the beads to enable the weight to reach a preset value;

and fourthly, controlling a third motor to enable the upper part of the feed hopper to be in a closed state, and the lower part of the material blocking device to be in an open state, and at the moment, the beads fall into the device body from the feed pipe to enter foaming treatment.

In the control method of the EPS particle feeding device, the gravity of the beads can be accurately weighed, the feeding pipe can be simply and conveniently closed, and the pressure in the device body is conveniently increased.

The object of the present invention is to provide a process for the preparation of EPS foam packaging boxes which overcomes some or some of the drawbacks of the prior art.

The preparation method of the EPS foam packing box comprises the following steps:

fourthly, turning on the first motor to enable the sieve plate to vibrate;

fifthly, controlling a third motor to enable the upper part of the feed hopper to be in a closed state and the lower part of the material blocking device to be in an open state, wherein the beads fall into the device body from the feed pipe, the polystyrene beads fall onto the sieve plate, the small beads fall into the first treatment groove after screening, and the large beads fall into the second treatment groove;

sixthly, starting a second motor to enable the stirring device to stir the large beads in the second treatment tank, wherein the small beads in the first treatment tank can be stirred by a stirring rod on the eccentric wheel;

introducing steam into the device body through a steam generator, and enabling the temperature in the device body to be higher than 92 ℃ so that the beads are foamed in the device body;

eighthly, after foaming for 10-24h, taking out the foamed beads from the first discharging hole and the second discharging hole, rounding, and finally carrying out compression molding.

According to the preparation method of the EPS foam packing box, the weight of beads can be accurately weighed, the raw materials can be accurately controlled conveniently, the feeding pipe can be opened and closed conveniently, steam can be introduced into the device body conveniently, and the pressure is increased; the beads can be separately stirred and mixed after being screened, so that the foaming superiority of the beads is ensured.

Preferably, a feeding pipe is arranged above the device body, a baffle is arranged in the device body, the baffle divides the interior of the device body into a first treatment groove and a second treatment groove, a plurality of support rods are vertically arranged in the first treatment groove, the support rods are provided with rubber springs, an inclined sieve plate is arranged above the support rods, the sieve plate is positioned below the feeding pipe, and one end of the sieve plate is aligned to the second treatment groove; an eccentric wheel used for vibrating the sieve plate is arranged in the first treatment tank, a driving shaft penetrates through the eccentric wheel, two ends of the driving shaft are arranged on the device body, and the driving shaft is driven by a first motor; a stirring device is arranged in the second treatment tank;

a mounting plate is arranged above the feeding pipe, a pressure sensor for measuring pressure is arranged below the mounting plate, and the pressure sensor is arranged on the device body; the mounting plate is provided with through holes which correspond to the feeding pipes up and down, a feeding hopper is arranged in the through holes, the section of the feeding hopper is rectangular, the upper part of the feeding hopper can be opened, the lower part of the feeding hopper can be closed, the feeding hopper is divided into a left hopper and a right hopper, and the inner side of the right hopper is sleeved on the inner side of the left hopper; the left lower edge of the left hopper and the right lower edge of the right hopper are respectively and rotatably connected to the side wall of the through hole.

According to the preparation method of the EPS foam packing box, the beads enter the sieve plate in the device body from the feeding pipe, the sieve plate can be used for screening the beads, and the sieve plate is inclined, so that large beads can flow on the sieve plate until the large beads flow into the second treatment tank due to gravity, and small beads can fall into the first treatment tank after being screened by the sieve plate, so that the beads with different sizes are effectively screened for subsequent bead pre-foaming, the beads with different sizes are separated for treatment, and the pre-foaming effect can be effectively improved. The driving shaft in the first processing groove drives the eccentric wheel to rotate, and the eccentric wheel rotates to drive the sieve plate to vibrate, so that the beads are screened. The bead enters the device body from the feeding pipe for foaming, then falls into the feeding hopper, at the moment, the pressure sensor detects a pressure signal and sends the pressure signal to the controller, and after the operation processing of the controller, a display connected with the controller displays gravity; the feeding hopper is divided into a left hopper and a right hopper, the left hopper and the right hopper can rotate, when the bottom surface of the left hopper and the bottom surface of the right hopper are attached together, the top surface of the feeding hopper is open, the bottom surface of the feeding hopper is in a closed state, then the feeding hopper can be charged, and the weight is weighed through the pressure sensor, so that the weighing mode is more accurate; when left hopper bottom surface and right hopper bottom surface part, when edge and right hopper top surface right edge laminating in the left side hopper top surface, the bead can fall into this internally of device, and the top surface of feeder hopper is the closure state, and this can prevent that the foreign matter from falling into this internally of device, need not manually with the lid to cover the inlet pipe and guarantee that this internal can increase pressure of device, save the process, convenient operation. This embodiment realizes the weighing of the beads and the closure of the feed tube through the opening and closing of the top and bottom surfaces of the feed hopper.

According to the preparation method of the EPS foam packing box, the bottom end of the eccentric wheel is located at the bottom of the first treatment tank, so that the diameter of the eccentric wheel is larger, the rotation of the eccentric wheel can stir small beads in the first treatment tank, the plane of the eccentric wheel is vertically provided with the stirring rods, the rotation of the eccentric wheel drives the stirring rods to rotate, and the rotation of the eccentric wheel enables the stirring rods to eccentrically rotate around the driving shaft, so that the stirred and mixed effects of the small beads are improved.

In the preparation method of the EPS foam packing box, the steam generator can convey steam into the device body, so that the beads are heated and expanded.

In the preparation method of the EPS foam packing box, the stirring device can stir the large beads in the second treatment tank, the second motor drives the rotating rod to rotate, the stirring blades on the rotating rod rotate around the rotating rod, and the stirring blades stir the large beads.

According to the preparation method of the EPS foam packing box, the arrangement of the blocking cavity can prevent the beads from falling into the first treatment tank without screening, so that the screening accuracy is improved; the screen holes can allow small beads to pass through, but cannot allow large beads to pass through, so that the screening of the beads is realized.

In the preparation method of the EPS foam packing box, the first discharge hole and the second discharge hole are convenient for discharging of the first treatment tank and the second treatment tank.

In the preparation method of the EPS foam packing box, the material blocking device with the isosceles triangle-shaped section replaces the bottom surface of the feed hopper, so that more beads can be filled in the feed hopper, and in addition, when the top surface of the feed hopper is closed, the first material blocking device and the second material blocking device of the material blocking device are respectively attached to the inner wall of the feeding pipe, so that the beads of the feed hopper cannot be clamped and all fall into the device body.

In the preparation method of the EPS foam packing box, the third motor rotates to drive the round rods to rotate, and the left hopper and the right hopper connected with the corresponding round rods rotate along with the round rods, so that the top surface and the bottom surface of the feeding hopper can be automatically closed.

The present invention is directed to an apparatus for pulverizing engineering plastics and a method for controlling the same that overcome one or more of the disadvantages of the related art.

The engineering plastic crushing device comprises a device body, wherein a feeding pipe is arranged above the device body, a baffle is arranged in the device body and divides the interior of the device body into a first treatment groove and a second treatment groove, a plurality of support rods are vertically arranged in the first treatment groove, the support rods are provided with rubber springs, an inclined sieve plate is arranged above the support rods, the sieve plate is positioned below the feeding pipe, and one end of the sieve plate is aligned to the second treatment groove; the first treatment tank is internally provided with an eccentric wheel used for vibrating the sieve plate, the bottom end of the eccentric wheel is positioned at the bottom of the first treatment tank, a driving shaft penetrates through the eccentric wheel, a first crushing moving blade is sleeved on the driving shaft, two ends of the driving shaft are arranged on the device body, and the driving shaft is driven by a first motor; a crushing device is arranged in the second treatment tank.

In the engineering plastic crushing device, engineering plastic particles enter the sieve plate in the device body from the feeding pipe, the sieve plate can be used for screening beads, and the sieve plate is inclined, so that large engineering plastic particles can flow on the sieve plate until the large engineering plastic particles flow into the second treatment tank due to gravity, and small engineering plastic particles can fall into the first treatment tank after being screened by the sieve plate, so that engineering plastics with different sizes are effectively screened for subsequent crushing treatment, and the engineering plastic particles with different sizes are separated for treatment, and a proper crushing blade can be installed in advance or the rotating speed can be controlled, so that the crushing capacity can be effectively improved. A driving shaft in the first treatment tank drives an eccentric wheel to rotate, and the eccentric wheel rotates to drive a sieve plate to vibrate, so that engineering plastic particles are screened. The first crushing movable blade can rotate along with the rotation of the driving shaft, so that small engineering plastic particles in the first treatment groove can be crushed while screening, and the crushing device is very convenient. The crushing device can crush the large engineering plastic particles in the second treatment tank.

Preferably, the crushing device comprises a rotating rod, a second crushing movable blade is arranged on the rotating rod in the circumferential direction, the second crushing blade is located in the second treatment groove, the top end of the rotating rod is rotatably connected to the top surface of the device body, and the rotating rod is driven by a second motor.

In the engineering plastic crushing device, the second motor drives the rotating rod to rotate, the second crushing blade on the rotating rod rotates around the rotating rod, and the second crushing blade crushes large engineering plastic particles.

Preferably, the side walls of the first treatment tank and the second treatment tank are respectively provided with a fixed blade matched with the first crushing movable blade and the second crushing movable blade.

In the engineering plastic crushing device, the fixed blade is matched with the first crushing movable blade and the second crushing movable blade to strengthen the crushing capacity.

In the engineering plastic crushing device of the invention,

In the engineering plastic crushing device, the blocking cavity is arranged, so that engineering plastics can be prevented from falling into the first treatment tank without being screened, and the screening accuracy is improved; the sieve pores can allow small engineering plastic particles to pass through, and large engineering plastic particles cannot pass through, so that the screening of the engineering plastic particles is realized.

Preferably, the screen plate 130 is inclined at an angle of 20 ° with respect to the horizontal direction.

In an engineering plastic pulverizing apparatus of the present invention, the screen plate 130 is inclined at an angle of 20 ° with respect to the horizontal direction so that it can be preferably screened.

The control method of the engineering plastic crushing device comprises the following steps:

firstly, turning on a first motor to vibrate a sieve plate;

secondly, adding engineering plastic particles into the device body from the feeding pipe, wherein the engineering plastic particles fall onto the sieve plate, large particles fall into the first treatment groove after being screened, and large particles fall into the second treatment groove;

thirdly, starting a second motor to enable the crushing device to crush the large particles in the second treatment tank, wherein the small particles in the first treatment tank can be crushed by the first crushing movable blade on the driving shaft;

and fourthly, taking out the crushed materials from the first discharging hole and the second discharging hole, namely finishing crushing.

According to the control method of the engineering plastic crushing device, the engineering plastic particles can be screened firstly and then are crushed separately, and the crushing effect can be improved better.

Drawings

Fig. 1 is a schematic structural diagram of an EPS mixing device in example 1;

FIG. 2 is a schematic view of the construction of a drive shaft in embodiment 1;

FIG. 3 is a schematic view showing the construction of a stirring rod in example 1;

FIG. 4 is a schematic view showing the construction of an EPS particle feeding apparatus of example 2;

FIG. 5 is a schematic top view of the feed hopper of example 2;

FIG. 6 is a schematic structural view of a feed hopper and a stock stop in embodiment 2;

FIG. 7 is a schematic structural view of an apparatus for pulverizing engineering plastics according to embodiment 4.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides an EPS mixing device, which includes a device body 110, a feeding pipe 111 is disposed above the device body 110, a baffle 112 is disposed in the device body 110, the baffle 112 partitions the interior of the device body 110 into a first processing groove 1131 and a second processing groove 1132, a plurality of supporting rods 120 are vertically disposed in the first processing groove 1131, the plurality of supporting rods 120 are provided with rubber springs 121, an inclined sieve plate 130 is disposed above the plurality of supporting rods 120, the sieve plate 130 is located below the feeding pipe 111, and one end of the sieve plate 130 is aligned with the second processing groove 1132; the first treating tank 1131 is further provided with an eccentric wheel 150 for vibrating the screen plate 130, a driving shaft 160 is inserted into the eccentric wheel 150, two ends of the driving shaft 160 are mounted on the device body 110, and the driving shaft 160 is driven by a first motor 161; a stirring device is provided in the second processing tank 1132.

The beads enter the sieve plate 130 in the apparatus body 110 from the feeding pipe 111, the sieve plate 130 can screen the beads, because the sieve plate 130 is inclined, the large beads flow on the sieve plate 130 until flowing into the second processing groove 1132 due to gravity, and the small beads fall into the first processing groove 1131 after being screened by the sieve plate 130, which effectively screens the beads with different sizes for subsequent pre-expansion of the beads, so that the beads with different sizes are separated for processing, and the pre-expansion effect can be effectively improved. The driving shaft 160 in the first treating tank 1131 drives the eccentric wheel 150 to rotate, and the eccentric wheel 150 rotates to drive the sieve plate 130 to vibrate, thereby realizing the screening of the beads.

In this embodiment, the bottom end of the eccentric 150 is located at the bottom of the first processing tank 1131, and a plurality of stirring rods 170 are vertically arranged on the plane of the eccentric 150.

The bottom end of the eccentric wheel 150 is located at the bottom of the first processing groove 1131, which makes the diameter of the eccentric wheel 150 larger, and the rotation thereof can stir the small beads located in the first processing groove 1131, a plurality of stirring rods 170 are vertically arranged on the plane of the eccentric wheel 150, so that the rotation of the eccentric wheel 150 drives the rotation of the stirring rods 170, and the rotation of the eccentric wheel 150 makes the stirring rods 170 eccentrically rotate around the driving shaft 160, thereby improving the effect of stirring and mixing the small beads, and simultaneously, the small beads in the first processing groove 1131 can be stirred and mixed.

In this embodiment, a steam generator 190 for supplying steam into the apparatus body 110 is connected to one side of the apparatus body 110.

The steam generator 190 can deliver steam into the device body 110 to effect heating and expansion of the beads.

In this embodiment, the stirring device includes a rotating rod 181, a plurality of stirring blades 182 are circumferentially disposed on the rotating rod 181, the plurality of stirring blades 182 are disposed in the second processing tank 1132, the top end of the rotating rod 181 is rotatably connected to the top surface of the device body 110, and the rotating rod 181 is driven by a second motor 183.

The stirring device can stir the large beads in the second processing tank 1132, the second motor 183 drives the rotating rod 181 to rotate, the stirring blade 182 on the rotating rod 181 rotates around the rotating rod 181, and the stirring blade 182 stirs the large beads.

In this embodiment, the shielding cavity 131 is disposed above the sieve plate 130, the bottom surface of the shielding cavity 131 is disposed with a plurality of sieve holes 140, the shielding cavity 131 gradually inclines downward from one end to the other end, one end of the shielding cavity 131 is aligned with the feeding pipe 111, and the other end of the shielding cavity 131 is aligned with the second processing slot 1132.

The arrangement of the blocking cavity 131 can prevent the beads from falling into the first treatment tank 1131 without screening, which improves the accuracy of screening; the screen openings 140 allow small beads to pass through, but not large beads, thereby enabling the screening of beads.

In this embodiment, the first discharging hole 114 is disposed on the bottom surface of the first processing groove 1131, and the second discharging hole 115 is disposed on the bottom surface of the second processing groove 1132.

The arrangement of the first discharging hole 114 and the second discharging hole 115 facilitates the discharging of the first treating tank 1131 and the second treating tank 1132.

The embodiment also provides a control method of the EPS material mixing device, which comprises the following steps:

first, the first motor 161 is turned on to vibrate the screen plate 130;

secondly, polystyrene beads containing foaming agent are added into the device body 110 from the feeding pipe 111, the polystyrene beads fall onto the sieve plate 130, the small beads fall into the first treatment groove 1131 after being screened, and the large beads fall into the second treatment groove 1132;

thirdly, the second motor 183 is started to enable the stirring device to stir the large beads in the second treatment tank 1132, and the small beads in the first treatment tank 1132 can be stirred by the stirring rod 170 on the eccentric wheel 150;

fourthly, introducing steam into the device body 110 through the steam generator 190, and enabling the temperature in the device body 110 to be higher than 92 ℃ so that the beads are foamed in the device body 110;

fifthly, after foaming for 10-24h, taking out the foamed beads from the first discharging hole 114 and the second discharging hole 115, rounding, and finally carrying out compression molding.

The control method of the EPS mixing device of the embodiment can preferably separate the screened polystyrene beads for foaming treatment, and can preferably improve the foaming effect.

In this example, the blowing agent was a mixture of n-pentane and isopentane in a mass ratio of 1: 1.

Example 2

As shown in fig. 4, 5 and 6, the present embodiment provides an EPS particle feeding device, which includes a device body 110, a feeding pipe 111 is disposed above the device body 110, a mounting plate 210 is disposed above the feeding pipe 111, a pressure sensor 240 for measuring pressure is disposed below the mounting plate 210, and the pressure sensor 240 is mounted on the device body 110; the mounting plate 210 is provided with through holes corresponding to the feeding pipes 111 up and down, a feeding hopper 230 is arranged in the through holes, the section of the feeding hopper 230 is rectangular, the upper part of the feeding hopper 230 is opened, the lower part of the feeding hopper 230 is closed, the feeding hopper 230 is divided into a left hopper 231a and a right hopper 231b, and the inner side of the right hopper 231b is sleeved on the inner side of the left hopper 231 a; the left lower edge of the left hopper 231a and the right lower edge of the right hopper 231b are rotatably connected to the side wall of the through hole respectively.

The beads can enter the device body 110 from the feeding pipe 111 for foaming, then fall into the feeding hopper 230, at this time, the pressure sensor 240 detects a pressure signal and sends the pressure signal to the controller, and after the operation processing of the controller, the display connected with the controller displays the gravity; the feeding hopper 230 is divided into a left hopper 231a and a right hopper 231b, the left hopper 231a and the right hopper 231b can rotate, when the bottom surfaces of the left hopper 231a and the right hopper 231b are attached together, the top surface of the feeding hopper 230 is open, the bottom surface is in a closed state, then the feeding hopper 230 can be charged, and the weight can be weighed through the pressure sensor 240, so that the weighing mode is more accurate; when the bottom surface of the left hopper 231a and the bottom surface of the right hopper 231b are separated until the left edge of the top surface of the left hopper 231a and the right edge of the top surface of the right hopper 231b are attached to each other, the beads fall into the apparatus body 110, and the top surface of the feed hopper 230 is in a closed state, so that foreign matters can be prevented from falling into the apparatus body 110, and the feed pipe 111 does not need to be manually covered by a cover to ensure that the pressure can be increased in the apparatus body 110, thereby saving the process and being convenient to operate. This embodiment achieves the weighing of the beads and the closure of the feed tube 111 by the opening and closing of the top and bottom surfaces of the feed hopper 230.

In the embodiment, a material blocking device 232 is arranged below the feed hopper 230, the section of the material blocking device 232 is an isosceles triangle, the upper part of the material blocking device 232 is communicated with the inner cavity of the feed hopper 230, and the lower part of the material blocking device 232 can be sealed; the material blocking device 232 is divided into a first material blocking device 232a and a second material blocking device 232b, the first material blocking device 232a is connected below the left hopper 231a, the second material blocking device 232b is connected below the right hopper 231b, and the inner side of the second material blocking device 232b is sleeved on the inner side of the first material blocking device 232 a.

The dam 232 having an isosceles triangle cross section replaces the bottom surface of the feeding hopper 230, which enables more beads to be loaded into the feeding hopper 230, and in addition, when the top surface of the feeding hopper 230 is closed, the first dam 232a and the second dam 232b of the dam 232 are respectively attached to the inner wall of the feeding pipe 111, so that the beads of the feeding hopper 230 are not blocked and fall into the device body 110.

In this embodiment, all be equipped with installation cavity 211 on the lateral wall about the through-hole, be equipped with round bar 220 in installation cavity 211, the round bar 220 both ends are rotationally installed respectively on the wall of cavity around installation cavity 211 and round bar 220 are driven by third motor 250, and edge and the right lower edge of the right side of left hopper 231a left side are fixed connection respectively on corresponding round bar 220.

The rotation of the third motor 250 drives the rotation of the round bar 220, and the left hopper 231a and the right hopper 231b connected to the corresponding round bar 220 rotate along with the rotation, so that the feeding hopper 230 can automatically close the top and bottom surfaces.

In this embodiment, the height of the cross section of the material blocking device 232 is equal to the height of the cross section of the feeding hopper 230.

The height of the cross section of the material blocking device 232 is equal to that of the cross section of the feeding hopper 230, so that when the first material blocking device 232a and the second material blocking device 232b are attached to the inner wall of the feeding pipe 111 respectively, the top surface of the feeding hopper 230 is just in a closed state.

In this embodiment, the diameter of the round rod 220 and the corresponding side of the through hole are on the same plane.

In this embodiment, the third motor 250 is installed outside the mounting plate 210.

The embodiment also provides a control method of the EPS particle feeding device, which comprises the following steps:

firstly, controlling a third motor 250 to enable the upper part of the feed hopper 230 to be in an open state, and a sealing device is arranged below the material blocking device 232;

keeping the pressure sensor 240 in a working state, and enabling a display matched with the pressure sensor 240 to display that the weight is 0;

thirdly, polystyrene beads containing foaming agent are added from a feed hopper 230, then the weight of the polystyrene beads is checked from the display, and then the beads are increased or decreased to enable the weight to reach a preset value;

fourthly, controlling the third motor 250 to enable the upper part of the feed hopper 230 to be in a closed state and the lower part of the material blocking device 232 to be in an open state, and at the moment, the beads fall into the device body 110 from the feed pipe 111 to enter foaming treatment.

In the control method of the EPS particle feeding device of this embodiment, the gravity of the beads can be accurately measured, and the feeding pipe 111 can be relatively easily and conveniently closed, so as to increase the pressure in the device body 110.

Example 3

The embodiment provides a preparation method of an EPS foam packing box, which comprises the following steps:

fourthly, turning on the first motor 161 to vibrate the screen plate 130;

fifthly, controlling a third motor 250 to enable the upper part of the feed hopper 230 to be in a closed state and the lower part of the material blocking device 232 to be in an open state, wherein the beads fall into the device body 110 from the feed pipe 111, the polystyrene beads fall onto the sieve plate 130, the small beads fall into the first treatment groove 1131 after screening, and the large beads fall into the second treatment groove 1132;

sixthly, starting the second motor 183 to enable the stirring device to stir the large beads in the second treatment tank 1132, wherein the small beads in the first treatment tank 1132 can be stirred by the stirring rod 170 on the eccentric wheel 150;

seventhly, introducing steam into the device body 110 through the steam generator 190, and enabling the temperature in the device body 110 to be higher than 92 ℃, and foaming the beads in the device body 110;

eighthly, after foaming for 10-24h, taking out the foamed beads from the first discharging hole 114 and the second discharging hole 115, rounding, and finally carrying out compression molding.

The preparation method of the EPS foam packing box can accurately weigh the weight of beads, is convenient for accurately controlling raw materials, can conveniently open and close the feeding pipe 111, is convenient for introducing steam into the device body 110, and increases pressure; the beads can be separately stirred and mixed after being screened, so that the foaming superiority of the beads is ensured.

In this embodiment, a feeding pipe 111 is disposed above the device body 110, a baffle 112 is disposed in the device body 110, the baffle 112 divides the interior of the device body 110 into a first processing groove 1131 and a second processing groove 1132, a plurality of support rods 120 are vertically disposed in the first processing groove 1131, the plurality of support rods 120 are provided with rubber springs 121, an inclined sieve plate 130 is disposed above the plurality of support rods 120, the sieve plate 130 is located below the feeding pipe 111, and one end of the sieve plate 130 is aligned with the second processing groove 1132; the first treating tank 1131 is further provided with an eccentric wheel 150 for vibrating the screen plate 130, a driving shaft 160 is inserted into the eccentric wheel 150, two ends of the driving shaft 160 are mounted on the device body 110, and the driving shaft 160 is driven by a first motor 161; a stirring device is arranged in the second treatment tank 1132;

a mounting plate 210 is arranged above the feeding pipe 111, a pressure sensor 240 for measuring pressure is arranged below the mounting plate 210, and the pressure sensor 240 is arranged on the device body 110; the mounting plate 210 is provided with through holes corresponding to the feeding pipes 111 up and down, a feeding hopper 230 is arranged in the through holes, the section of the feeding hopper 230 is rectangular, the upper part of the feeding hopper 230 is opened, the lower part of the feeding hopper 230 is closed, the feeding hopper 230 is divided into a left hopper 231a and a right hopper 231b, and the inner side of the right hopper 231b is sleeved on the inner side of the left hopper 231 a; the left lower edge of the left hopper 231a and the right lower edge of the right hopper 231b are rotatably connected to the side wall of the through hole respectively.

The beads enter the sieve plate 130 in the apparatus body 110 from the feeding pipe 111, the sieve plate 130 can screen the beads, because the sieve plate 130 is inclined, the large beads flow on the sieve plate 130 until flowing into the second processing groove 1132 due to gravity, and the small beads fall into the first processing groove 1131 after being screened by the sieve plate 130, which effectively screens the beads with different sizes for subsequent pre-expansion of the beads, so that the beads with different sizes are separated for processing, and the pre-expansion effect can be effectively improved. The driving shaft 160 in the first treating tank 1131 drives the eccentric wheel 150 to rotate, and the eccentric wheel 150 rotates to drive the sieve plate 130 to vibrate, thereby realizing the screening of the beads. The beads enter the device body 110 from the feeding pipe 111 to be foamed, then fall into the feeding hopper 230, at this time, the pressure sensor 240 detects a pressure signal and sends the pressure signal to the controller, and after the operation processing of the controller, a display connected with the controller displays gravity; the feeding hopper 230 is divided into a left hopper 231a and a right hopper 231b, the left hopper 231a and the right hopper 231b can rotate, when the bottom surfaces of the left hopper 231a and the right hopper 231b are attached together, the top surface of the feeding hopper 230 is open, the bottom surface is in a closed state, then the feeding hopper 230 can be charged, and the weight can be weighed through the pressure sensor 240, so that the weighing mode is more accurate; when the bottom surface of the left hopper 231a and the bottom surface of the right hopper 231b are separated until the left edge of the top surface of the left hopper 231a and the right edge of the top surface of the right hopper 231b are attached to each other, the beads fall into the apparatus body 110, and the top surface of the feed hopper 230 is in a closed state, so that foreign matters can be prevented from falling into the apparatus body 110, and the feed pipe 111 does not need to be manually covered by a cover to ensure that the pressure can be increased in the apparatus body 110, thereby saving the process and being convenient to operate. This embodiment achieves the weighing of the beads and the closure of the feed tube 111 by the opening and closing of the top and bottom surfaces of the feed hopper 230.

The bottom end of the eccentric 150 is located at the bottom of the first treating tank 1131, which makes the diameter of the eccentric 150 larger and the rotation thereof can stir the small beads located in the first treating tank 1131, and a plurality of stirring rods 170 are vertically arranged on the plane of the eccentric 150, so that the rotation of the eccentric 150 drives the rotation of the stirring rods 170, and so that the rotation of the eccentric 150 makes the stirring rods 170 eccentrically rotate around the driving shaft 160, thereby improving the stirred and mixed effect of the small beads.

Example 4

As shown in fig. 7, the embodiment provides an engineering plastic crushing device, which includes a device body 110, a feeding pipe 111 is disposed above the device body 110, a baffle 112 is disposed in the device body 110, the baffle 112 partitions the interior of the device body 110 into a first processing groove 1131 and a second processing groove 1132, a plurality of support rods 120 are vertically disposed in the first processing groove 1131, the plurality of support rods 120 are provided with rubber springs 121, an inclined sieve plate 130 is disposed above the plurality of support rods 120, the sieve plate 130 is located below the feeding pipe 111, and one end of the sieve plate 130 is aligned with the second processing groove 1132; the first processing groove 1131 is further provided with an eccentric wheel 150 for vibrating the screen plate 130, the bottom end of the eccentric wheel 150 is located at the groove bottom of the first processing groove 1131, a driving shaft 160 penetrates through the eccentric wheel 150, the driving shaft 160 is sleeved with a first crushing moving blade 311, two ends of the driving shaft 160 are installed on the device body 110, and the driving shaft 160 is driven by a first motor 161; a crushing apparatus is provided in the second processing tank 1132.

Engineering plastic particles enter the sieve plate 130 in the device body 110 from the feeding pipe 111, the sieve plate 130 can screen the beads, and the sieve plate 130 is inclined, so large engineering plastic particles can flow on the sieve plate 130 due to gravity until flowing into the second treatment groove 1132, small engineering plastic particles can be screened by the sieve plate 130 and then fall into the first treatment groove 1131, engineering plastics with different sizes are effectively screened for subsequent crushing treatment, engineering plastic particles with different sizes are separated for treatment, a proper crushing blade can be installed in advance or the rotating speed can be controlled, and thus the crushing capacity can be effectively improved. The driving shaft 160 in the first treating tank 1131 drives the eccentric wheel 150 to rotate, and the eccentric wheel 150 rotates to drive the sieve plate 130 to vibrate, thereby realizing the screening of the engineering plastic particles. The first crushing moving blade 311 rotates along with the rotation of the driving shaft 160, so that the small engineering plastic particles in the first treatment groove 1131 can be crushed while screening, which is very convenient. The pulverizing device can pulverize the large engineering plastic particles in the second processing tank 1132.

In this embodiment, the crushing device includes a rotating rod 181, the rotating rod 181 is circumferentially provided with a second crushing blade 312, the second crushing blade 312 is located in the second processing slot 1132, the top end of the rotating rod 181 is rotatably connected to the top surface of the device body 110, and the rotating rod 181 is driven by a second motor 183.

The second motor 183 drives the rotating rod 181 to rotate, the second crushing blade 312 on the rotating rod 181 rotates around the rotating rod 181, and the second crushing blade 312 crushes the large engineering plastic particles.

In this embodiment, the side walls of the first processing groove 1131 and the second processing groove 1132 are respectively provided with a fixed blade 320 matched with the first crushing moving blade 311 and the second crushing moving blade 312.

The stationary blade 320 is coupled with the first crushing moving blade 311 and the second crushing moving blade 312 to enhance the crushing ability.

The arrangement of the blocking cavity 131 can prevent the engineering plastics from falling into the first processing groove 1131 without screening, so that the screening accuracy is improved; the sieve holes 140 allow the small engineering plastic particles to pass through, but the large engineering plastic particles cannot pass through, so that the engineering plastic particles are screened.

In this embodiment, the screen plate 130 is inclined at an angle of 20 ° with respect to the horizontal direction.

The embodiment also provides a control method of the engineering plastic crushing device, which comprises the following steps:

first, the first motor 161 is turned on to vibrate the screen plate 130;

secondly, adding engineering plastic particles into the device body 110 from the feeding pipe 111, wherein the engineering plastic particles fall onto the sieve plate 130, large particles fall into the first treatment groove 1131 after being screened, and the large particles fall into the second treatment groove 1132;

thirdly, the second motor 183 is started to enable the crushing device to crush the large particles in the second treatment tank 1132, and the small particles in the first treatment tank 1132 can be crushed by the first crushing movable blade 311 on the driving shaft 160;

and fourthly, taking out the crushed materials from the first discharging hole 114 and the second discharging hole 115, namely finishing crushing.

The control method of the engineering plastic crushing device can be used for screening engineering plastic particles firstly and then separating and crushing the engineering plastic particles, and can better improve the crushing effect.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. A control method of an EPS material mixing device is characterized in that:

the device comprises a device body (110), a feeding pipe (111) is arranged above the device body (110), a baffle plate (112) is arranged in the device body (110), the baffle plate (112) divides the interior of the device body (110) into a first treatment groove (1131) and a second treatment groove (1132), a plurality of supporting rods (120) are vertically arranged in the first treatment groove (1131), the plurality of supporting rods (120) are provided with rubber springs (121), an inclined sieve plate (130) is arranged above the plurality of supporting rods (120), the sieve plate (130) is positioned below the feeding pipe (111), and one end of the sieve plate (130) is aligned to the second treatment groove (1132); an eccentric wheel (150) used for vibrating the sieve plate (130) is further arranged in the first treatment groove (1131), a driving shaft (160) penetrates through the eccentric wheel (150), two ends of the driving shaft (160) are installed on the device body (110), and the driving shaft (160) is driven by a first motor (161); a stirring device is arranged in the second treatment tank (1132); the bottom end of the eccentric wheel (150) is positioned at the bottom of the first treatment groove (1131), and a plurality of stirring rods (170) are vertically arranged on the plane of the eccentric wheel (150); one side of the device body (110) is connected with a steam generator (190) used for conveying steam into the device body (110); the stirring device comprises a rotating rod (181), a plurality of stirring blades (182) are circumferentially arranged on the rotating rod (181), the stirring blades (182) are positioned in a second treatment tank (1132), the top end of the rotating rod (181) is rotatably connected to the top surface of the device body (110), and the rotating rod (181) is driven by a second motor (183); a blocking cavity (131) is arranged above the sieve plate (130), a plurality of sieve holes (140) are formed in the bottom surface of the blocking cavity (131), the blocking cavity (131) gradually inclines downwards from one end to the other end, one end of the blocking cavity (131) is aligned to the feeding pipe (111), and the other end of the blocking cavity (131) is aligned to the second treatment tank (1132); a first discharge hole (114) is formed in the bottom surface of the first processing groove (1131), and a second discharge hole (115) is formed in the bottom surface of the second processing groove (1132);

further comprising the steps of:

firstly, turning on a first motor (161) to vibrate a sieve plate (130);

secondly, polystyrene beads containing foaming agent are added into the device body (110) from a feeding pipe (111), the polystyrene beads fall onto the sieve plate (130), the small beads fall into the first treatment groove (1131) after being screened, and the large beads fall into the second treatment groove (1132);

thirdly, starting a second motor (183) to enable a stirring device to stir the large beads in the second treatment tank (1132), wherein the small beads in the first treatment tank (1132) can be stirred by a stirring rod (170) on an eccentric wheel (150);

fourthly, introducing steam into the device body (110) through a steam generator (190), and enabling the temperature in the device body (110) to be higher than 92 ℃ and the beads to foam in the device body (110);

fifthly, after foaming for 10-24h, taking out the foamed beads from the first discharging hole (114) and the second discharging hole (115), then rounding and finally carrying out compression molding.

2. The control method of the EPS mixing device according to claim 1, characterized in that: the blowing agent is a mixture of n-pentane and isopentane.