CN113665031A

CN113665031A - Energy-saving and environment-friendly plastic pipe crushing and recycling device

Info

Publication number: CN113665031A
Application number: CN202110937629.9A
Authority: CN
Inventors: 刘波
Original assignee: Shuyang Jiuding Steel Co ltd
Current assignee: Shuyang Jiuding Steel Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2021-11-19
Anticipated expiration: 2041-08-16
Also published as: CN113665031B

Abstract

The invention relates to the field of plastic product recovery, in particular to an energy-saving and environment-friendly plastic pipe crushing and recovering device which comprises a base, an elastic screen, an inner cylinder, a grinding ring, a cutting assembly and a rocker, wherein the base is provided with a filter screen; the upper end of each elastic strip is connected with an upper ring and a lower ring respectively; the inner cylinder can be rotatably arranged in the elastic screen around a vertical axis, a cutting cavity is defined by the inner cylinder and the elastic screen, and the upper end of the elastic strip is positioned on the front side of the lower end along the rotating direction of the inner cylinder; the grinding ring is positioned outside the elastic screen, is coaxial with the lower ring and defines a grinding cavity with the elastic screen; according to the size of resistance when cutting chamber and grinding intracavity material pile up, adjust the clearance of bullet strip to the speed that the control material got into the grinding chamber from the cutting chamber avoids cutting chamber or grinding intracavity material to pile up the jam, influences crushing efficiency.

Description

Energy-saving and environment-friendly plastic pipe crushing and recycling device

Technical Field

The invention relates to the field of plastic product recovery, in particular to an energy-saving and environment-friendly plastic pipe crushing and recovering device.

Background

The plastic pipe fitting is widely applied to daily life, such as a water supply pipe, a drain pipe, a threading pipe for installing and sleeving electric wires and the like, a large amount of scrap is generated along with the use of the plastic pipe fitting, the scrapped plastic pipe fitting can be used as a filler or a raw material after being recycled and crushed, the plastic pipe fitting is reused as the raw material after being recycled and crushed, the environment is protected by energy conservation, the conventional plastic pipe fitting crushing and recovering device is crushed by adopting a cutting or grinding or combination mode of the cutting and the grinding, but the cutting and the grinding are mutually independent when being combined, the self-adaption adjustment cannot be carried out according to the crushing conditions of the plastic pipe fitting and the grinding, the material piling or material shortage of a certain process is easily caused, the crushing and recovering device is influenced, therefore, the working condition of two processes can be adjusted in a self-adaption mode, and the material piling and blocking are avoided.

Disclosure of Invention

The invention provides an energy-saving and environment-friendly plastic pipe crushing and recycling device, which aims to solve the problem that the cutting and grinding of the conventional plastic pipe crushing and recycling device cannot be adaptively adjusted to influence the crushing efficiency.

The energy-saving and environment-friendly plastic pipe crushing and recycling device adopts the following technical scheme:

an energy-saving and environment-friendly plastic pipe crushing and recycling device comprises a base, an elastic screen, an inner cylinder, a grinding ring, a cutting assembly, a driving device and a rocker, wherein the base is hollow, a filter screen is arranged at the upper end of the base, the elastic screen comprises an upper ring, a lower ring and an elastic strip, the lower ring is fixedly arranged on the filter screen, the upper ring is positioned above the lower ring, and the outer circumference of the upper ring is provided with a downward and inward extending inclined plane; a plurality of elastic strips are uniformly distributed along the circumferential direction of the lower ring, and the upper end of each elastic strip is connected with the upper ring and the lower ring respectively; the inner cylinder can be rotatably arranged on the filter screen around a vertical axis, is positioned in an annular space defined by the elastic strips and defines a cutting cavity with the annular space defined by the elastic strips, the inner cylinder is driven by the driving device to rotate, and the upper ends of the elastic strips are positioned on the front side of the lower end along the rotating direction of the inner cylinder; the cutting assembly comprises a vertically extending knife column and a plurality of cutting knives, one ends of the cutting knives are arranged on the knife column, the knife column is hinged to the outer circumference of the inner cylinder and synchronously rotates along with the inner cylinder, and the cutting knives cut materials in the cutting cavity; the grinding ring is positioned outside the elastic screen mesh, is coaxial with the lower ring and defines a grinding cavity with an annular shape surrounded by the elastic strips, the grinding ring is formed by hinging and enclosing a plurality of grinding plate assemblies around a first hinge column which extends vertically, each grinding plate assembly comprises a first baffle plate and a second baffle plate, one end of the first baffle plate and one end of the second baffle plate are hinged around a second hinge column which extends vertically, a lifting wedge block is arranged on the second hinge column, the end part of the lifting wedge block is attached to an inclined plane on the outer circumference of the upper ring so as to push the upper ring to move upwards when moving towards the direction close to the inner cylinder along with the second hinge column, and a grinding plate is arranged on one side, close to the elastic strips, of the second hinge column; the rocking rod has a plurality ofly, and every rocking rod both ends are the upper end of fixed connection sword post and the upper end of second articulated post respectively to make the grinding ring rotate along with the inner tube is synchronous, and along the direction of rotation of inner tube, the one end that rocking rod and sword post are fixed is located the front side with the fixed one end of second articulated post.

Optionally, in an initial state, the radial direction of the inner cylinder passing through the cutter post is located between the extending direction of the cutting knife on the cutter post and the extending direction of the rocker connected with the cutter post, so that when the resistance is increased due to material accumulation in the cutting cavity, the cutting knife rotates in the radial direction of the inner cylinder close to the cutter post under the resistance of the material; and when the material is piled up and leads to the resistance increase in grinding the intracavity, the direction that the inner tube was kept away from to the extrusion of material is removed to the second hinge post to drive the cutting knife to rotate to the radial direction of the inner tube of keeping away from the sword post.

Optionally, in the rotation direction of the grinding ring, the first baffle plate in each grinding plate assembly is positioned at the front side of the second baffle plate, the front side of each first baffle plate is hinged with the rear side of the second baffle plate of the adjacent grinding plate assembly around a first hinge column, and the rear side of each second baffle plate is hinged with the front side of the first baffle plate of the adjacent grinding plate assembly around a first hinge column; each grinding plate component further comprises a first connecting rod, a second connecting rod and a third hinge column, the rear end of the first connecting rod is fixedly connected with the upper end of the front side of the first baffle plate of the adjacent grinding plate component, the front end of the second connecting rod is fixedly connected with the lower end of the rear side of the second grinding plate of the adjacent grinding plate component, the third hinge column vertically extends, the front end of the first connecting rod and the rear end of the second connecting rod are hinged to the upper end and the lower end of the third hinge column respectively, a quadrangle is enclosed by the first baffle plate and the second baffle plate, and the second hinge columns between the first baffle plate and the second baffle plate of each grinding plate component synchronously move towards the direction close to or far away from the inner cylinder.

Optionally, the cutting knife is from last down spiral distribution on the sword post, and the spiral direction is unanimous with the rotation direction of inner tube to when starting to rotate along with the inner tube, the cutting knife is from up contacting with the material in proper order down.

Optionally, the grinding plate is obliquely arranged and fixedly mounted on the inner side of one end, close to the second hinge column, of the second baffle plate, and an included angle between the grinding plate and the second baffle plate is an acute angle; along the rotation direction of grinding ring, be provided with the grinding tooth on the leading flank of lapping plate to grind grinding chamber interior material when rotating along with grinding ring, and lead to the resistance increase at grinding chamber windrow, when the articulated post of second removes to keeping away from the inner tube direction, reduce with the contained angle of the radial direction of inner tube, the projection increase of the radial direction of inner tube.

Optionally, the energy-saving and environment-friendly plastic pipe crushing and recycling device further comprises a shell, the shell covers the base, and the grinding ring, the elastic screen, the cutting assembly and the rocker are all located in a space enclosed by the shell and the base; the upper end of the shell is provided with a feed hopper communicated with the inner cylinder, the peripheral wall of the inner cylinder is provided with a feed channel communicated with the cutting cavity, and materials enter from the feed hopper and enter the cutting cavity along the feed channel; be provided with the play hopper with inside intercommunication on the base lateral wall, go out the hopper and extend to in the base to receive the material that the filter screen was sieved and discharge.

Optionally, the driving device is a motor, the motor is installed in the base, and the inner cylinder is driven by the motor to rotate.

The invention has the beneficial effects that: when the cutting resistance is increased due to accumulation of materials in the cutting cavity of the energy-saving and environment-friendly plastic pipe crushing and recycling device, the cutting knife drives the knife column to rotate along the direction opposite to the rotation direction of the inner cylinder, the rocker drives the second hinge column to move towards the direction close to the inner cylinder, and the lifting wedge block pushes the upper ring to move upwards when moving along the direction close to the inner cylinder of the second hinge column, so that the gap of the elastic strips is increased, and the materials are accelerated to enter the grinding cavity from the cutting cavity; when grinding intracavity material and piling up, promote the further slope of bullet strip through grinding the intracavity material and make and go up the annular ring and move down when the grinding ring rotates, reduce the clearance between the bullet strip, slow down the material and get into the grinding chamber from the cutting chamber, according to the size of cutting chamber and grinding intracavity material resistance when piling up, adjust the clearance of bullet strip to control material gets into the speed of grinding chamber from the cutting chamber, avoid cutting chamber or grinding intracavity material to pile up the jam, influence crushing efficiency.

Furthermore, when the material accumulation in the cutting cavity causes resistance increase, the cutting knife rotates towards the radial direction of the inner barrel close to the knife post under the resistance of the material, so that the projection of the cutting knife in the radial direction of the inner barrel is increased, the effective cutting length is increased, the cutting effect is better, the accelerated cutting of the material in the cutting cavity is facilitated, the material in the cutting cavity is stirred outwards in an accelerated manner, the material is promoted to enter the grinding cavity from the gap of the elastic strip, and the cutting pressure in the cutting cavity is further reduced; and when the material piles up and leads to the resistance increase in grinding the intracavity, the second hinge post is to the direction removal of keeping away from the inner tube under the pushing of material, and drive the cutting knife and rotate to the radial direction of keeping away from the inner tube of sword post, make the projection of cutting knife at the radial direction of inner tube reduce, the effective length of cutting reduces, the cutting force reduces, make more power distribution to the grinding plate, and then make the grinding plate accelerate the grinding of grinding intracavity material, and slow down outwards stirring cutting intracavity material, slow down the material and get into the grinding chamber from the cutting chamber, and then alleviate the grinding resistance of grinding the chamber.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an embodiment of an energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

FIG. 2 is an exploded view of the overall structure of an embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

FIG. 3 is a cross-sectional view of the overall structure of an embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

FIG. 4 is a schematic structural diagram of an inner cylinder, a grinding ring and an elastic screen in an embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

fig. 5 is a schematic structural diagram of a first baffle and a second baffle in an embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

fig. 6 is a schematic diagram illustrating a state of the lifting wedge cooperating with an upper ring of the elastic screen in the embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

FIG. 7 is a schematic diagram of the normal working states of a knife post and a grinding ring in an embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

fig. 8 is a schematic diagram illustrating the state of the cutter post and the grinding ring when the resistance of the cutting cavity is increased in the embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

fig. 9 is a schematic diagram illustrating the state of the cutter post and the grinding ring when the resistance of the grinding cavity is increased in the embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

fig. 10 is a schematic view of the installation of a cutting knife in the embodiment of the energy-saving and environment-friendly plastic pipe crushing and recycling device of the invention;

in the figure: 1. a base; 11. a discharge hopper; 12. filtering with a screen; 2. a housing; 21. a feed hopper; 3. an elastic screen; 31. ring fitting; 32. a lower ring; 33. a spring bar; 4. an inner barrel; 5. a knife post; 51. a cutting knife; 6. a rocker; 7. a second hinge post; 71. lifting the wedge block; 8. a grinding ring; 81. a first baffle plate; 82. a second baffle; 83. a first link; 84. a second link; 85. a third hinge post; 821. a grinding plate; 9. an electric motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention relates to an energy-saving and environment-friendly plastic pipe crushing and recycling device, as shown in figures 1 to 1, which comprises a base 1, an elastic screen 3, an inner cylinder 4, a grinding ring 8, a cutting assembly, a driving device and a rocker 6,

the base 1 is hollow, the upper end of the base is provided with a filter screen 12,

the elastic screen 3 comprises an upper ring 31, a lower ring 32 and elastic strips 33, wherein the lower ring 32 is fixedly arranged on the filter screen 12, the upper ring 31 is positioned above the lower ring 32, and the outer circumference of the upper ring 31 is provided with a downward and inward extending inclined plane; a plurality of elastic strips 33 are uniformly distributed along the circumferential direction of the lower ring 32, and the upper end of each elastic strip 33 is connected with the upper ring 31 and the lower ring 32 respectively;

the inner cylinder 4 is rotatably mounted on the filter screen 12 around a vertical axis, is positioned in an annular space surrounded by the plurality of elastic strips 33, and defines a cutting cavity with an annular space surrounded by the plurality of elastic strips 33, the inner cylinder 4 is driven by the driving device to rotate, and the upper ends of the elastic strips 33 are positioned on the front side of the lower ends along the rotating direction of the inner cylinder 4;

the cutting assembly comprises a vertically extending knife column 5 and a plurality of cutting knives 51 which horizontally extend and one ends of which are arranged on the knife column 5, the knife column 5 is hinged on the outer circumference of the inner cylinder 4 and synchronously rotates along with the inner cylinder 4, so that the cutting knives 51 cut materials in the cutting cavity;

the grinding ring 8 is positioned outside the elastic screen mesh 3, is coaxial with the lower ring 32 and defines a grinding cavity with an annular shape enclosed by the elastic strips 33, the grinding ring 8 is formed by hinging and enclosing a plurality of grinding plate assemblies around a first hinge column extending vertically, each grinding plate assembly comprises a first baffle plate 81 and a second baffle plate 82, one end of the first baffle plate 81 and one end of the second baffle plate 82 are hinged around a second hinge column 7 extending vertically, a lifting wedge 71 is arranged on the second hinge column 7, the end part of the lifting wedge 71 is attached to an inclined surface of the outer circumference of the upper ring 31 so as to push the upper ring 31 to move upwards when moving towards the direction close to the inner cylinder 4 along with the second hinge column 7, and a grinding plate 821 is arranged on one side, close to the elastic strips 33, of the second hinge column 7;

the number of the rocking rods 6 is multiple, two ends of each rocking rod 6 are respectively and fixedly connected with the upper end of the cutter post 5 and the upper end of the second hinge post 7, so that the grinding ring 8 synchronously rotates along with the inner barrel 4, and the fixed end of the rocking rod 6 and the cutter post 5 is positioned on the front side of the fixed end of the second hinge post 7 along the rotating direction of the inner barrel 4;

materials are cut in the cutting cavity by the cutting knife 51 and then enter the grinding cavity through gaps of the elastic strips 33, the materials are ground by the grinding plate 821 and then are discharged through the filter screen 12, when the cutting resistance is increased due to accumulation of the materials in the cutting cavity, the cutting knife 51 drives the knife column 5 to rotate in the direction opposite to the rotation direction of the inner cylinder 4, the rocker 6 drives the second hinge column 7 to move towards the direction close to the inner cylinder 4, the lifting wedge 71 pushes the upper ring 31 to move upwards when moving along the direction of the second hinge column 7 close to the inner cylinder 4, the gaps of the elastic strips 33 are increased, and the materials are accelerated to enter the grinding cavity from the cutting cavity; when the material piles up in the grinding chamber, grind intracavity material and make second articulated post 7 to the direction removal of keeping away from inner tube 4, and grind 8 when rotating and make bullet strip 33 further slope through grinding intracavity material and make and go up ring 31 downstream, reduce the clearance between bullet strip 33, slow down the material and get into the grinding chamber from the cutting chamber.

In this embodiment, in an initial state, the radial direction of the inner barrel 4 passing through the knife column 5 is located between the extending direction of the cutting knife 51 on the knife column 5 and the extending direction of the rocker 6 connected with the knife column 5, so that when the material is accumulated in the cutting cavity to increase the resistance, the cutting knife 51 rotates in the radial direction of the inner barrel 4 close to the knife column 5 under the resistance of the material, the projection of the cutting knife 51 in the radial direction of the inner barrel 4 is increased, the effective cutting length is increased, the cutting effect is better, the accelerated cutting of the material in the cutting cavity is facilitated, the material in the cutting cavity is stirred outwards at an accelerated speed, the material is promoted to enter the grinding cavity from the gap of the elastic strip 33, and the cutting pressure in the cutting cavity is reduced; and when the material piles up and leads to the resistance increase in grinding the intracavity, second hinge post 7 is in the pushing of material down to the direction removal of keeping away from inner tube 4, and drive cutting knife 51 to the radial direction rotation of the inner tube 4 of keeping away from post 5, make the projection of cutting knife 51 at the inner tube 4's radial direction reduce, the effective length of cutting reduces, the cutting force reduces, make more power distribution to lapping plate 821, and then make lapping plate 821 accelerate the grinding of grinding intracavity material, and slow down and stir the cutting intracavity material outwards, slow down the material and get into the grinding chamber from the cutting chamber, and then alleviate the grinding resistance in grinding chamber.

In the present embodiment, in the rotation direction of the grinding ring 8, the first baffle plate 81 in each grinding plate assembly is located at the front side of the second baffle plate 82, and the front side of each first baffle plate 81 is hinged with the rear side of the second baffle plate 82 of the adjacent grinding plate assembly around a first hinge column, and the rear side of each second baffle plate 82 is hinged with the front side of the first baffle plate 81 of the adjacent grinding plate assembly around a first hinge column; each grinding plate assembly further comprises a first connecting rod 83, a second connecting rod 84 and a third hinge column 85, the rear end of the first connecting rod 83 is fixedly connected with the upper end of the front side of the first baffle plate of the adjacent grinding plate assembly, the front end of the second connecting rod 84 is fixedly connected with the lower end of the rear side of the second grinding plate of the adjacent grinding plate assembly, the third hinge column 85 extends vertically, the front end of the first connecting rod 83 and the rear end of the second connecting rod 84 are respectively hinged to the upper end and the lower end of the third hinge column 85 so as to enclose a quadrangle with the first baffle plate 81 and the second baffle plate 82, and the second hinge column 7 between the first baffle plate 81 and the second baffle plate 82 of each grinding plate assembly synchronously moves towards the direction close to or far away from the inner barrel 4.

In this embodiment, the cutting knife 51 is from last down spiral distribution on the tool post 5, and the direction of spiral is unanimous with the direction of rotation of inner tube 4 to when starting to rotate along with inner tube 4, cutting knife 51 from up in proper order with the material contact down, avoid cutting knife 51 instantaneous atress too big when starting to rotate.

In this embodiment, the grinding plate 821 is disposed obliquely and fixedly installed at the inner side of the second baffle 82 near the end of the second hinge column 7, and the included angle between the grinding plate and the second baffle 82 is an acute angle; along the rotation direction of grinding ring 8, be provided with the grinding tooth on grinding plate 821's the leading flank to grind grinding chamber material when rotating along with grinding ring 8, and lead to the resistance increase at grinding chamber windrow, second hinge post 7 when moving to keeping away from inner tube 4 direction, reduce with the contained angle of inner tube 4's radial direction, the projection increase of inner tube 4's radial direction, and then make the grinding effect better, grind the grinding of intracavity material with higher speed.

In the embodiment, the energy-saving and environment-friendly plastic pipe crushing and recycling device further comprises a shell 2, wherein the shell 2 covers the base 1, and the grinding ring 8, the elastic screen 3, the cutting assembly and the rocker 6 are all positioned in a space enclosed by the shell 2 and the base 1; a feed hopper 21 communicated with the inner cylinder 4 is arranged at the upper end of the shell 2, a feed channel communicated with the cutting cavity is arranged on the peripheral wall of the inner cylinder 4, and materials enter from the feed hopper 21 and enter the cutting cavity along the feed channel; be provided with on the base 1 lateral wall with inside intercommunication go out hopper 11, go out hopper 11 and extend to in the base 1 to receive the material that filter screen 12 sieved and discharge.

In this embodiment, the driving device is a motor 9, the motor 9 is installed in the base 1, and the inner cylinder 4 is driven by the motor 9 to rotate.

In this embodiment, there are six grinding plate assemblies, rocker 6 has three, and tool post 5 has three, 6 one end of rocker and a 5 fixed connection of tool post, the second articulated post 7 fixed connection of grinding plate assembly of the other end, and the second articulated post 7 that is connected with rocker 6 interval distribution in proper order.

When the energy-saving and environment-friendly plastic pipe crushing and recycling device is used, materials enter the inner cylinder 4 from the feed hopper 21, the motor 9 is started, the materials enter the cutting cavity from the feed channel under the centrifugal action, the inner cylinder 4 is driven by the motor 9 to rotate to drive the knife post 5, rocker 6 and grinding ring 8 synchronous rotation, second hinge post 7 lies in one side that is close to inner tube 4 of first hinge post under the drive of rocker 6, cutting knife 51 is cutting the material of cutting intracavity when rotating along with inner tube 4, cut to the material of predetermineeing the size and get into in base 1 from filter screen 12, the material of uncut to predetermineeing the size gets into the grinding chamber from the clearance of bullet strip 33 under the stirring of centrifugal action and cutting knife 51, grinding plate 821 grinds the material of grinding intracavity along with grinding ring 8 pivoted simultaneously, grind to the material of suitable size and get into in base 1 from filter screen 12, and discharge from hopper 11. When the resistance is increased due to the accumulation of materials in the cutting cavity, the cutting knife 51 rotates in the radial direction of the inner cylinder 4 close to the knife column 5 under the resistance of the materials, the rocker 6 drives the second hinge column 7 to move in the direction close to the inner cylinder 4, and the lifting wedge block 71 pushes the upper ring 31 to move upwards when moving in the direction close to the inner cylinder 4 along with the second hinge column 7, so that the gap of the elastic strip 33 is increased, and the materials are accelerated to enter the grinding cavity from the cutting cavity; the projection of the cutting knife 51 in the radial direction of the inner barrel 4 is increased, the effective cutting length is increased, the cutting effect is better, the cutting of materials in the cutting cavity is accelerated, the materials in the cutting cavity are stirred outwards, the materials are promoted to enter the grinding cavity from the gap of the elastic strip 33, and the cutting pressure in the cutting cavity is further reduced; when the resistance is increased due to the accumulation of materials in the grinding cavity, when the grinding ring 8 rotates, the elastic strips 33 are further inclined by the materials in the grinding cavity, so that the upper ring 31 moves downwards, the gap between the elastic strips 33 is reduced, and the materials are slowed down from entering the grinding cavity from the cutting cavity; and the second hinged column 7 moves in the direction far away from the inner cylinder 4 under the pushing of the material, and drives the cutting knife 51 to rotate in the radial direction far away from the inner cylinder 4 of the knife column 5, so that the projection of the cutting knife 51 in the radial direction of the inner cylinder 4 is reduced, the effective length of cutting is reduced, the cutting force is reduced, more power is distributed to the grinding plate 821, further the grinding plate 821 accelerates the grinding of the material in the grinding cavity, and slows down the outward shifting of the material in the cutting cavity, the material is slowed down to enter the grinding cavity from the cutting cavity, further the grinding resistance of the grinding cavity is lightened, and when the grinding plate 821 moves in the direction far away from the inner cylinder 4 along with the second hinged column 7, the included angle with the radial direction of the inner cylinder 4 is reduced, the projection of the radial direction of the inner cylinder 4 is increased, further the grinding effect is better, and the grinding of the material in the grinding cavity is accelerated.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an energy-concerving and environment-protective broken recovery unit of plastics pipe fitting which characterized in that: the automatic cutting machine comprises a base, an elastic screen, an inner cylinder, a grinding ring, a cutting assembly, a driving device and a rocker, wherein the base is hollow, a filter screen is arranged at the upper end of the base, the elastic screen comprises an upper ring, a lower ring and an elastic strip, the lower ring is fixedly arranged on the filter screen, the upper ring is positioned above the lower ring, and the outer circumference of the upper ring is provided with a downward and inward extending inclined plane; a plurality of elastic strips are uniformly distributed along the circumferential direction of the lower ring, and the upper end of each elastic strip is connected with the upper ring and the lower ring respectively; the inner cylinder can be rotatably arranged on the filter screen around a vertical axis, is positioned in an annular space defined by the elastic strips and defines a cutting cavity with the annular space defined by the elastic strips, the inner cylinder is driven by the driving device to rotate, and the upper ends of the elastic strips are positioned on the front side of the lower end along the rotating direction of the inner cylinder; the cutting assembly comprises a vertically extending knife column and a plurality of cutting knives, one ends of the cutting knives are arranged on the knife column, the knife column is hinged to the outer circumference of the inner cylinder and synchronously rotates along with the inner cylinder, and the cutting knives cut materials in the cutting cavity; the grinding ring is positioned outside the elastic screen mesh, is coaxial with the lower ring and defines a grinding cavity with an annular shape surrounded by the elastic strips, the grinding ring is formed by hinging and enclosing a plurality of grinding plate assemblies around a first hinge column which extends vertically, each grinding plate assembly comprises a first baffle plate and a second baffle plate, one end of the first baffle plate and one end of the second baffle plate are hinged around a second hinge column which extends vertically, a lifting wedge block is arranged on the second hinge column, the end part of the lifting wedge block is attached to an inclined plane on the outer circumference of the upper ring so as to push the upper ring to move upwards when moving towards the direction close to the inner cylinder along with the second hinge column, and a grinding plate is arranged on one side, close to the elastic strips, of the second hinge column; the rocking rod has a plurality ofly, and every rocking rod both ends are the upper end of fixed connection sword post and the upper end of second articulated post respectively to make the grinding ring rotate along with the inner tube is synchronous, and along the direction of rotation of inner tube, the one end that rocking rod and sword post are fixed is located the front side with the fixed one end of second articulated post.

2. The energy-saving and environment-friendly plastic pipe crushing and recycling device as claimed in claim 1, wherein: in an initial state, the radial direction of the inner cylinder passing through the cutter post is positioned between the extension direction of the cutting knife on the cutter post and the extension direction of a rocker connected with the cutter post, so that when the resistance is increased due to the accumulation of materials in a cutting cavity, the cutting knife rotates towards the radial direction of the inner cylinder close to the cutter post under the resistance of the materials; and when the material is piled up and leads to the resistance increase in grinding the intracavity, the direction that the inner tube was kept away from to the extrusion of material is removed to the second hinge post to drive the cutting knife to rotate to the radial direction of the inner tube of keeping away from the sword post.

3. The energy-saving and environment-friendly plastic pipe crushing and recycling device as claimed in claim 1, wherein: along the rotation direction of the grinding ring, the first baffle plate in each grinding plate assembly is positioned on the front side of the second baffle plate, the front side of each first baffle plate is hinged with the rear side of the second baffle plate of the adjacent grinding plate assembly around a first hinge column, and the rear side of each second baffle plate is hinged with the front side of the first baffle plate of the adjacent grinding plate assembly around a first hinge column; each grinding plate component further comprises a first connecting rod, a second connecting rod and a third hinge column, the rear end of the first connecting rod is fixedly connected with the upper end of the front side of the first baffle plate of the adjacent grinding plate component, the front end of the second connecting rod is fixedly connected with the lower end of the rear side of the second grinding plate of the adjacent grinding plate component, the third hinge column vertically extends, the front end of the first connecting rod and the rear end of the second connecting rod are hinged to the upper end and the lower end of the third hinge column respectively, a quadrangle is enclosed by the first baffle plate and the second baffle plate, and the second hinge columns between the first baffle plate and the second baffle plate of each grinding plate component synchronously move towards the direction close to or far away from the inner cylinder.

4. The energy-saving and environment-friendly plastic pipe crushing and recycling device as claimed in claim 2, wherein: the cutting knife is from last down spiral distribution on the sword post, and the rotation direction unanimity of spiral direction and inner tube to when starting to rotate along with the inner tube, the cutting knife is from up contacting with the material in proper order down.

5. The energy-saving and environment-friendly plastic pipe crushing and recycling device as claimed in claim 1, wherein: the grinding plate is obliquely arranged and fixedly arranged on the inner side of one end, close to the second hinge column, of the second baffle plate, and an included angle formed between the grinding plate and the second baffle plate is an acute angle; along the rotation direction of grinding ring, be provided with the grinding tooth on the leading flank of lapping plate to grind grinding chamber interior material when rotating along with grinding ring, and lead to the resistance increase at grinding chamber windrow, when the articulated post of second removes to keeping away from the inner tube direction, reduce with the contained angle of the radial direction of inner tube, the projection increase of the radial direction of inner tube.

6. The energy-saving and environment-friendly plastic pipe crushing and recycling device as claimed in claim 1, wherein: the grinding ring, the elastic screen, the cutting assembly and the rocker are all positioned in a space enclosed by the shell and the base; the upper end of the shell is provided with a feed hopper communicated with the inner cylinder, the peripheral wall of the inner cylinder is provided with a feed channel communicated with the cutting cavity, and materials enter from the feed hopper and enter the cutting cavity along the feed channel; be provided with the play hopper with inside intercommunication on the base lateral wall, go out the hopper and extend to in the base to receive the material that the filter screen was sieved and discharge.

7. The energy-saving and environment-friendly plastic pipe crushing and recycling device as claimed in claim 1, wherein: the driving device is a motor, the motor is arranged in the base, and the inner cylinder rotates under the driving of the motor.