CN210679281U - Plastic pellet screening plant - Google Patents

Abstract

A plastic pellet screening device comprises a support, wherein the top of the support is connected with a vibration bin through an elastic mechanism, the top surface and the bottom surface of the vibration bin are both of an open structure, the vibration bin is arranged obliquely downwards, at least two layers of filter screens are arranged in the vibration bin, the mesh aperture of the filter screen on the upper layer is larger than that of the filter screen on the lower layer in every two adjacent filter screens, and the lower edge of each layer of filter screen is connected with a discharge chute; the bottom of the vibration bin is provided with a discharge hopper which is fixed on the bracket, and a gap is arranged between the discharge hopper and the edge of the bottom of the vibration bin; and the vibration device is arranged on the support and used for driving the vibration bin to vibrate. The multi-stage screening can be carried out, the continuous screening can be carried out, and the screening efficiency is high; in addition, the device has simple structure and low manufacturing cost.

Description

Plastic pellet screening plant

Technical Field

The utility model belongs to plastic tubing production facility field, in particular to plastic pellet screening plant.

Background

The plastic pipe is manufactured by hot-melting extrusion molding, and plastic granules are required to be hot-melted before the plastic pipe is molded, and the plastic granules are manufactured by a granulator. Because the technical difference of different granulators is large in the granulating process of the granulator, the quality of the produced plastic granules also has difference. The plastic grains need to be screened before use, so that unqualified plastic grains or plastic grains with different diameters are screened, and the plastic grains with small size difference can save process time when manufacturing the plastic pipe.

The existing plastic particle screening device can only carry out primary screening operation, can not carry out screening continuously, and has lower screening efficiency.

Disclosure of Invention

In view of the technical problems in the background art, the plastic granule screening device provided by the utility model can perform multi-stage screening, can perform continuous screening, and has high screening efficiency; in addition, the device has simple structure and low manufacturing cost.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

a plastic pellet screening device comprises a support, wherein the top of the support is connected with a vibration bin through an elastic mechanism, the top surface and the bottom surface of the vibration bin are both of an open structure, the vibration bin is arranged obliquely downwards, at least two layers of filter screens are arranged in the vibration bin, the mesh aperture of the filter screen on the upper layer is larger than that of the filter screen on the lower layer in every two adjacent filter screens, and the lower edge of each layer of filter screen is connected with a discharge chute; the bottom of the vibration bin is provided with a discharge hopper which is fixed on the bracket, and a gap is arranged between the discharge hopper and the edge of the bottom of the vibration bin; and the vibration device is arranged on the support and used for driving the vibration bin to vibrate.

In the preferred scheme, the number of filter screens be two-layer, be upper filter screen and lower floor's filter screen respectively, upper filter screen and lower floor's filter screen are fixed by the screen frame respectively.

In the preferred scheme, the discharge chute arranged at the lower edge of the upper filter screen is an upper discharge chute, and the discharge chute arranged at the lower edge of the lower filter screen is a lower discharge chute; the lower discharging chute is of a straight chute structure, and the upper discharging chute is of a bent chute structure.

In the preferred scheme, the discharging direction of the upper discharging groove and the lower discharging groove form a ninety-degree included angle.

In a preferred scheme, the vibrating device comprises a motor, the motor is arranged outside the side wall of the vibrating bin through a motor fixing plate, a driving belt pulley is arranged at the front shaft end of the motor, the driving belt pulley is connected with a driven belt pulley through a belt, the driven belt pulley is connected with a rotating shaft, and the rotating shaft penetrates through two side walls of the vibrating bin and is fixed with the side wall of the vibrating bin through a bearing seat; the rotating shaft is provided with an eccentric vibration starting sheet, a vibration starting table is arranged below the eccentric vibration starting sheet and fixed outside the discharge hopper, and the vibration starting table is matched with the eccentric vibration starting sheet.

In the preferred scheme, the elastic mechanism comprises a spring, an upper fixing piece and a lower fixing piece are respectively arranged at the upper end and the lower end of the spring, the upper fixing piece is welded on the outer wall of the vibrating bin, and the lower fixing piece is welded on the support.

In the preferred scheme, a first belt conveyor is arranged below the outlet of the upper-layer discharge chute, and a second belt conveyor is arranged below the outlet of the lower-layer discharge chute.

In the preferred scheme, a third belt conveyor is arranged below an outlet of the discharge hopper.

This patent can reach following beneficial effect:

the high end of the vibration bin is used for putting plastic grains to be screened, and the vibration bin is vibrated by the vibration device in the process that the plastic grains slide downwards, so that the plastic grain screening effect is accelerated; because in two adjacent filter screens, the filter screen mesh aperture that is located the upper strata is greater than the filter screen mesh aperture that is located the lower floor, and the plastic pellet can carry out multistage screening in this device. The plastic grain continuous screening device is simple in structure, can achieve continuous screening operation of plastic grains, and plastic grains with different diameters are conveyed from the conveying devices arranged in different directions respectively, so that the plastic grain continuous screening device is high in working efficiency.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a three-dimensional view of the overall structure of the present invention, wherein the filter screen is not installed;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a front view of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at B;

figure 5 is the utility model discloses overall structure three-dimensional map, the filter screen has been installed this moment.

In the figure: the device comprises a support 1, an elastic mechanism 2, a vibration bin 3, a discharge hopper 4, a vibration device 5, a motor 51, a driving belt pulley 52, a driven belt pulley 53, a rotating shaft 54, an eccentric vibration-starting sheet 55, a vibration-starting table 56, a filter screen 6, a filter screen frame 7, an upper layer discharge chute 81, a lower layer discharge chute 82, a first belt conveyor 91, a second belt conveyor 92 and a third belt conveyor 93.

Detailed Description

The preferable scheme is as shown in fig. 1 to 5, the plastic pellet screening device comprises a support 1, the top of the support 1 is connected with a vibration bin 3 through an elastic mechanism 2, the top surface and the bottom surface of the vibration bin 3 are both of an open structure, the vibration bin 3 is obliquely arranged downwards, at least two layers of filter screens 6 are arranged in the vibration bin 3, the mesh aperture of the filter screen 6 on the upper layer is larger than that of the filter screen 6 on the lower layer in two adjacent filter screens 6, and the lower edge of each layer of the filter screen 6 is connected with a discharge chute; a discharge hopper 4 is arranged at the bottom of the vibration bin 3, the discharge hopper 4 is fixed on the bracket 1, and a gap is arranged between the discharge hopper 4 and the bottom edge of the vibration bin 3; the support 1 is provided with a vibration device 5, and the vibration device 5 is used for driving the vibration bin 3 to vibrate.

The support 1 comprises five H-shaped stand columns, wherein the tops of four H-shaped stand columns are respectively provided with an elastic mechanism 2, and the other H-shaped stand column is used for fixing a vibrating device 5; the inclination angle of the vibration bin 3 is set between 25-45 degrees, the high end of the vibration bin 3 is used for throwing plastic grains to be screened, and the vibration bin 3 is vibrated by the vibration device 5 in the process that the plastic grains slide downwards, so that the plastic grain screening effect is accelerated; because in two adjacent filter screens 6, the 6 mesh opening diameters of the filter screen that are located the upper strata are greater than the 6 mesh opening diameters of the filter screen that are located the lower floor, and the plastic pellet can carry out multistage screening in this device.

Further, the number of the filter screens 6 is two, namely an upper filter screen and a lower filter screen, which are respectively fixed by the filter screen frame 7. Correspondingly, the discharge chute arranged at the lower edge of the upper filter screen is an upper discharge chute 81, and the discharge chute arranged at the lower edge of the lower filter screen is a lower discharge chute 82; the lower discharging chute 82 is of a straight chute structure, and the upper discharging chute 81 is of a bent chute structure. Preferably, the discharge direction of the upper discharge chute 81 and the lower discharge chute 82 is at an angle of ninety degrees.

This device sets up two-layer filter screen 6, its aim at: the quantity of filter screen 6 is too much for the structure of device can become complicated, and in order to guarantee the screening effect, need increase the volume of device, improved the manufacturing cost of device, in addition, blown down tank quantity sets up too much, and the degree of difficulty of laying of blown down tank can increase, considers the convenience of the ejection of compact, and this technical scheme has adopted two poles of the earth screening design, can satisfy most plastic pellet screening operation.

A first belt conveyor 91 is arranged below the outlet of the upper discharging chute 81, and a second belt conveyor 92 is arranged below the outlet of the lower discharging chute 82. A third belt conveyer 93 is arranged below the outlet of the discharge hopper 4.

The number of the discharge chutes is two, and when the discharge direction of the upper discharge chute 81 and the lower discharge chute 82 is at an included angle of ninety degrees, the installation of the first belt conveyor 91 and the second belt conveyor 92 is facilitated. If the number of the discharge chutes is too large, the problem of bundling of the belt conveyor can occur.

Further, the vibrating device 5 comprises a motor 51, the motor 51 is arranged outside the side wall of the vibrating bin 3 through a motor fixing plate, a driving belt pulley 52 is arranged at the front shaft end of the motor 51, the driving belt pulley 52 is connected with a driven belt pulley 53 through a belt, the driven belt pulley 53 is connected with a rotating shaft 54, and the rotating shaft 54 penetrates through the two side walls of the vibrating bin 3 and is fixed with the side wall of the vibrating bin 3 through a bearing seat; an eccentric vibration-generating sheet 55 is arranged on the rotating shaft 54, a vibration-generating table 56 is arranged below the eccentric vibration-generating sheet 55, the vibration-generating table 56 is fixed outside the discharging hopper 4, and the vibration-generating table 56 is matched with the eccentric vibration-generating sheet 55.

The vibration starting table 56 is an I-shaped steel plate, the upper surface of the I-shaped steel plate is horizontally arranged, and the I-shaped steel plate is welded on the outer wall of the discharge hopper 4.

The eccentric vibration-generating piece 55 can adopt an eccentric disc structure or a fan-shaped piece structure, and the eccentric vibration-generating piece 55 shown in the attached figure 2 of the specification is of a fan-shaped structure. The circular shape of the eccentric oscillating piece 55 does not coincide with the axis of the rotary shaft 54, and when the rotary shaft 54 rotates, the eccentric oscillating piece 55 contacts the oscillating table 56, so that the distance between the axis of the rotary shaft 54 and the upper surface of the oscillating table 56 is constantly changed, thereby achieving an oscillating effect.

Further, elastic mechanism 2 includes the spring, and both ends are provided with mounting and lower mounting respectively about the spring, go up the mounting welding on vibrating bin 3 outer walls, and lower mounting welding is on support 1. The spring include three spring, the steel sheet that the level set up has all been welded at both ends about the spring, the steel sheet that the level set up has all welded at both ends about the steel sheet, connecting plate welds respectively on 3 outer walls in vibration storehouse and support 1.

The working principle of the whole device is as follows:

the high end of the vibration bin 3 is used for throwing plastic grains to be screened, a conveying device (such as a belt conveyor or a spiral conveyor) can be adopted in a feeding mode, when the plastic grains slide downwards, large plastic grains cannot pass through an upper filter screen, plastic grains smaller than the pore diameter of the upper filter screen pass through the upper filter screen, and plastic grains which do not meet the requirement at the first stage are discharged from an upper discharge chute 81; according to the same principle, plastic particles smaller than the pore diameter of the lower filter screen pass through the lower filter screen; the second stage unsatisfactory plastic pellets are discharged from the lower discharge chute 82.

Multistage screening has been accomplished in above-mentioned process, and at the screening in-process, through vibrating device 5 with the vibration of vibration storehouse 3 to the effect of plastic pellet screening is with higher speed.

Claims (8)

1. The utility model provides a plastic pellet screening plant, includes support (1), its characterized in that: the top of the support (1) is connected with the vibration bin (3) through the elastic mechanism (2), the top surface and the bottom surface of the vibration bin (3) are both of an open structure, the vibration bin (3) is arranged obliquely downwards, at least two layers of filter screens (6) are arranged in the vibration bin (3), the sieve pore diameter of the filter screen (6) positioned on the upper layer is larger than that of the filter screen (6) positioned on the lower layer in two adjacent filter screens (6), and the lower edge of each layer of filter screen (6) is connected with a discharge chute; a discharge hopper (4) is arranged at the bottom of the vibration bin (3), the discharge hopper (4) is fixed on the bracket (1), and a gap is arranged between the discharge hopper (4) and the bottom edge of the vibration bin (3); the support (1) is provided with a vibration device (5), and the vibration device (5) is used for driving the vibration bin (3) to vibrate.

2. The plastic pellet screening apparatus of claim 1, wherein: the number of the filter screens (6) is two, namely an upper filter screen and a lower filter screen, which are respectively fixed by a filter screen frame (7).

3. The plastic pellet screening apparatus of claim 2, wherein: the discharge chute arranged at the lower edge of the upper filter screen is an upper discharge chute (81), and the discharge chute arranged at the lower edge of the lower filter screen is a lower discharge chute (82); the lower discharging groove (82) is of a straight groove structure, and the upper discharging groove (81) is of a bent groove structure.

4. The plastic pellet screening apparatus of claim 3, wherein: the discharging direction of the upper discharging groove (81) and the lower discharging groove (82) form a ninety-degree included angle.

5. The plastic pellet screening apparatus of claim 1, wherein: the vibrating device (5) comprises a motor (51), the motor (51) is arranged outside the side wall of the vibrating bin (3) through a motor fixing plate, a driving belt pulley (52) is arranged at the front shaft end of the motor (51), the driving belt pulley (52) is connected with a driven belt pulley (53) through a belt, the driven belt pulley (53) is connected with a rotating shaft (54), and the rotating shaft (54) penetrates through the two side walls of the vibrating bin (3) and is fixed with the side wall of the vibrating bin (3) through a bearing seat; an eccentric vibration-generating sheet (55) is arranged on the rotating shaft (54), a vibration-generating table (56) is arranged below the eccentric vibration-generating sheet (55), the vibration-generating table (56) is fixed outside the discharge hopper (4), and the vibration-generating table (56) is matched with the eccentric vibration-generating sheet (55).

6. The plastic pellet screening apparatus of claim 1, wherein: the elastic mechanism (2) comprises a spring, an upper fixing piece and a lower fixing piece are arranged at the upper end and the lower end of the spring respectively, the upper fixing piece is welded on the outer wall of the vibrating bin (3), and the lower fixing piece is welded on the support (1).

7. A plastic pellet screening apparatus as claimed in claim 3 or 4, wherein: a first belt conveyor (91) is arranged below an outlet of the upper-layer discharging groove (81), and a second belt conveyor (92) is arranged below an outlet of the lower-layer discharging groove (82).

8. The plastic pellet screening apparatus of claim 1, wherein: a third belt conveyor (93) is arranged below the outlet of the discharge hopper (4).

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