A recycling crushing device for flame-retardant masterbatch

Abstract

The present application relates to non-metal waste treatment technical field, especially to a kind of recovery crushing device for flame-retardant master batch.It includes organic shell, the upper side of the shell is fixed and is communicated with feed shell, the lower side of the shell is fixed and is communicated with processing shell, two crushing rollers are rotatably connected in the processing shell, the shell is equipped with driving module, further including: rotating rod, two, both are arranged in the shell, and both are located between the feed shell and the processing shell;Shielding piece, two, respectively rotatably connected on adjacent rotating rod.The lower part of the shielding piece is used to block the splashing plastic particles, reduce the amount of splashing plastic particles from the feed shell reverse discharge, ensure the life safety of operator, while the shape of the lower part of the shielding piece is used to guide the plastic, facilitate the splashing plastic to move again between the two crushing rollers, improve the crushing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of non-metallic waste treatment, in particular to a recovery and crushing device for flame retardant masterbatch. Background Art

[0002] Flame-retardant masterbatch (also known as flame retardant masterbatch) is a granular material made by mixing an excess of flame retardant with a carrier resin, dispersant, and other agents. Flame-retardant masterbatch can be directly incorporated into a plastic matrix as an additive to create flame-retardant plastic. This process primarily enhances the plastic's flame retardancy and effectively inhibits the spread of flame. To reduce waste pollution and minimize the ecological impact of flame retardant residues, plastics containing flame-retardant masterbatch (flame-retardant plastics) are recycled. This process uses a double-roll crushing machine to reduce the size of the flame-retardant plastic, facilitating subsequent processing.

[0003] However, during the crushing operation of flame-retardant plastics, the flame-retardant masterbatch contained therein makes the flame-retardant plastics harder and has a higher structural strength. This results in high energy consumption during the crushing of the flame-retardant plastics, which is prone to violent collisions, thus causing the flame-retardant plastics to splash. In addition, the molecular chains of the flame-retardant plastics break unevenly during the crushing process, producing irregular fragments, which further aggravates the splashing. The splashing of the flame-retardant plastics will lead to low crushing efficiency. The splashing plastics will also directly hit the operator due to the high-speed rotation, causing skin cuts, eye injuries, and even more serious physical injuries. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a recycling and crushing device for flame retardant masterbatch.

[0005] The technical solution of the present invention is: a recycling and crushing device for flame retardant masterbatch, comprising an organic shell, the upper side of the shell is fixed and connected to a feed shell, the lower side of the shell is fixed and connected to a processing shell, two crushing rollers are rotatably connected in the processing shell, the shell is installed with a driving module, the driving module is used to drive the two crushing rollers to rotate, and the rotation directions of the two crushing rollers are opposite, and also includes: two rotating rods, both arranged in the shell, and both located between the feed shell and the processing shell; two shielding members, respectively rotatably connected to adjacent rotating rods; two adjusting mechanisms, both arranged on the shell, for adjusting the resistance of the shielding members to rotation on adjacent rotating rods.

[0006] As a preferred technical solution of the present invention, in the vertical direction, the distance between the two shielding members changes from large to small and then from small to large.

[0007] As a preferred technical solution of the present invention, elastic strips are fixed to both sides of the feed shell, and the elastic strips are fixed to connecting plates, and the two connecting plates are located above the two shielding members.

[0008] As a preferred technical solution of the present invention, the adjustment mechanism includes: a fixed frame, fixed to the adjacent rotating rod, the fixed frame is fixed with a fixed cylinder, the fixed frame is rotatably and slidably connected to a push-pull rod, and the push-pull rod is threadedly connected to the fixed cylinder; a fixed frame, hinged to the shielding member; a sliding rod, slidably connected to the fixed frame and slidably connected to the fixed cylinder, and an elastic member is fixed between the sliding rod and the push-pull rod.

[0009] As a preferred technical solution of the present invention, it also includes: two speed control mechanisms, which are respectively arranged on adjacent shielding members, for controlling the falling speed of the material, thereby changing the particle size of the material after being crushed. The speed control mechanism includes: a plurality of transmission shafts, which are all rotatably connected to adjacent shielding members and have different heights, and a plurality of extrusion rollers are fixed to the transmission shafts; a power module, which is installed on adjacent shielding members, for driving all the transmission shafts to rotate.

[0010] As a preferred technical solution of the present invention, all the squeezing rollers on the same shielding member but different transmission shafts are staggered, and all the squeezing rollers on different shielding members and at the same height are staggered.

[0011] As a preferred technical solution of the present invention, the squeezing rollers close to both sides of the shielding member are both provided with spiral strips, and the spiral directions of the spiral strips on the two squeezing rollers are opposite.

[0012] As a preferred technical solution of the present invention, it also includes: a swing mechanism, having two, respectively arranged on both sides of the rotating rod, for adjusting the position of the shielding member, the swing mechanism includes: a stabilizing rod, rotatably connected between the two rotating rods, the stabilizing rod rotatably connected to the driving frame; an electric push rod, hinged to the feed shell, the telescopic end of the electric push rod is fixed to the driving frame.

[0013] As a preferred technical solution of the present invention, two rows of extrusion blocks are fixedly connected in the processing shell, and the two crushing rollers are located between the two rows of extrusion blocks. In each row of the extrusion blocks, the crushing teeth on the adjacent crushing rollers are staggered.

[0014] As a preferred technical solution of the present invention, the extrusion block is provided with symmetrically distributed inclined surfaces.

[0015] The present invention has the following advantages: the present invention blocks the splashing plastic particles through the lower part of the shielding member, reduces the amount of splashing plastic particles discharged back from the feed shell, ensures the life safety of the operator, and at the same time uses the shape of the lower part of the shielding member to guide the plastic, so that the splashing plastic can be moved again between the two crushing rollers, thereby improving the crushing efficiency.

[0016] The present invention controls the compression amount of the elastic member on the push-pull rod by rotating the push-pull rod, thereby adjusting the resistance of the shielding member when it opens, ensuring that plastics of different thicknesses can be stably clamped and that the plastics can be smoothly moved downward.

[0017] The present invention clamps the plastic by means of an extrusion roller and adjusts the rotation speed of the extrusion roller, thereby achieving the purpose of adjusting the particle size of the crushed plastic and improving the applicability of the device.

[0018] The present invention drives one side of the shielding member to swing downward through an electric push rod, shortens the distance between the downwardly swinging side of the shielding member and the crushing roller, and changes the contact position between the shielding member and the plastic, thereby extending the time that the shielding member clamps the plastic and ensuring the stability of the plastic during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the components in the casing of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the processing shell and the crushing roller of the present invention;

[0022] Figure 4 Schematic diagram of the three-dimensional structure of the elastic strip and the fixing frame of the present invention;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the connecting plate and the driving frame of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the fixed cylinder and the squeezing roller of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the transmission shaft and the squeezing roller of the present invention;

[0026] Figure 8 Schematic diagram of the three-dimensional structure of the stabilizer bar and the drive frame of the present invention;

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the crushing roller and the extrusion block of the present invention;

[0028] Figure 10This is an exploded view of the three-dimensional structure of the casing and the feed casing of the present invention;

[0029] Figure 11 It is an exploded view of the three-dimensional structure of the components of the shielding member of the present invention.

[0030] The figures are marked as follows: 1- housing, 2- feed shell, 3- processing shell, 4- crushing roller, 5- driving module, 6- rotating rod, 7- shielding member, 21- elastic strip, 22- connecting plate, 31- fixing frame, 32- fixing cylinder, 33- push-pull rod, 34- fixing frame, 35- sliding rod, 41- transmission shaft, 42- squeezing roller, 43- power module, 51- stabilizing bar, 52- driving frame, 53- electric push rod, 61- squeezing block. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention.

[0032] Example 1: This example provides a recycling and crushing device for flame retardant masterbatch, which mainly proposes a method for intercepting splashing plastic during the plastic crushing process, thereby reducing pollution to the external environment and lowering the safety risks to operators.

[0033] like Figures 1-6 、 Figure 10 and Figure 11 As shown, it includes an organic shell 1, the upper side of the shell 1 is fixed and connected with a feed shell 2, the lower side of the shell 1 is fixed and connected with a processing shell 3, two crushing rollers 4 are rotatably connected in the processing shell 3, and the shell 1 is installed with a driving module 5, the driving module 5 is used to drive the two crushing rollers 4 to rotate, and the rotation directions of the two crushing rollers 4 are opposite; there are two rotating rods 6, both are arranged in the shell 1, and both are located between the feed shell 2 and the processing shell 3; there are two shielding members 7, which are rotatably connected to adjacent rotating rods 6 respectively; there are two adjusting mechanisms, both are arranged on the shell 1, for adjusting the resistance of the shielding members 7 to rotation on the adjacent rotating rods 6; in the vertical direction, the distance between the two shielding members 7 changes from large to small and then from small to large.

[0034] In the above scheme, the crushing teeth of the two crushing rollers 4 are staggered with each other to crush the plastic; the driving module 5 is an existing structure, which is only an example in the figure, and is mainly composed of a driving motor, a pulley belt and a reducer; in this embodiment, the rotating rod 6 is fixedly connected to the casing 1. The shielding member 7 is mainly divided into three parts: the upper part is used to guide the material entering the feed shell 2 (the distance between the upper parts of the two shielding members 7 gradually decreases from top to bottom), so that the material enters between the two shielding members 7; the middle part is used to clamp the plastic to ensure the stability of the plastic during the crushing process; the lower part is used to block the splashing plastic residue and reduce the amount of plastic residue flying out of the casing 1 (the distance between the lower parts of the two shielding members 7 gradually increases from top to bottom). Initially, a gap is left between the two shielding members 7 to facilitate the falling of the plastic (such as Figure 4 shown).

[0035] Further, such as Figure 1-Figure 5 and Figure 10 As shown, elastic strips 21 are fixedly connected to both sides of the feed shell 2 , and the elastic strips 21 are fixedly connected to connecting plates 22 . The two connecting plates 22 are located above the two shielding members 7 .

[0036] In the above solution, the elastic strip 21 is made of rubber and can be deformed to facilitate the deflection of the connecting plate 22. The connecting plate 22 is used to guide the plastic to facilitate the material to enter between the two shielding members 7.

[0037] Further, such as Figures 1-6 and Figure 11 As shown, the adjustment mechanism includes: a fixed frame 31, fixed to the adjacent rotating rod 6, the fixed frame 31 is fixed with a fixed cylinder 32, the fixed frame 31 is rotatably and slidably connected to a push-pull rod 33, and the push-pull rod 33 is threadedly connected to the fixed cylinder 32; a fixed frame 34, hinged to the shielding member 7; a sliding rod 35, slidably connected to the fixed frame 34, and slidably connected to the fixed cylinder 32, and an elastic member is fixed between the sliding rod 35 and the push-pull rod 33.

[0038] In the above scheme, the push-pull rod 33 is composed of a handwheel and a cylinder. The deflection of the shielding member 7 is facilitated by the hinged connection between the fixed frame 34 and the shielding member 7 and the sliding of the sliding rod 35 and the fixed frame 34. The fixed cylinder 32 is located between the sliding rod 35 and the push-pull rod 33. The elastic member between the sliding rod 35 and the push-pull rod 33 is a spring, which is used to provide resistance to the swing of the shielding member 7 and is initially in a compressed state.

[0039] The specific operation process of a flame retardant masterbatch recovery and crushing device disclosed in this embodiment is as follows:

[0040] Crushing preparation:

[0041] When the plastic needs to be crushed, the operator adjusts the resistance of the two shielding members 7 when opening according to the thickness of the plastic to achieve a firm clamping of plastics of different thicknesses. The operator rotates the two push-pull rods 33 to move the two push-pull rods 33 toward each other or away from each other. Taking the away movement of the two push-pull rods 33 as an example, the push-pull rods 33 move along the adjacent fixed cylinders 32, and the distance between the push-pull rods 33 and the adjacent sliding rods 35 gradually increases, so that the elastic member between the sliding rods 35 and the push-pull rods 33 stretches under the action of the elastic force until the two push-pull rods 33 are moved to an appropriate position (the deformation of the elastic member corresponds to that of the plastic). The operator stops rotating the push-pull rods 33, thus completing the adjustment of the resistance when the shielding members 7 are opened. In this process, when the thickness of the plastic is greater, the distance between the two push-pull rods 33 is greater, reducing the clamping force of the two shielding members 7 on the passing plastic, ensuring that the plastic falls smoothly. Conversely, when the thickness of the material is smaller, the distance between the two push-pull rods 33 is closer.

[0042] After the positions of the two push-pull rods 33 are adjusted, the operator turns on the driving module 5 , which drives the two crushing rollers 4 to rotate, and the crushing preparation work is completed.

[0043] Start breaking:

[0044] The operator puts the plastic to be crushed into the feed shell 2 and pushes the plastic downward. The downward-moving plastic squeezes the adjacent connecting plate 22, and the connecting plate 22 is deflected by the squeezing, so that the connecting plate 22 guides the downward-moving plastic, making it easier for the plastic to enter between the two shielding members 7. During the deflection of the connecting plate 22, the elastic strip 21 is squeezed and deformed. When plastics of different thicknesses move downward, the greater the thickness, the greater the deflection angle of the connecting plate 22.

[0045] When the plastic enters between the two shielding members 7, the plastic squeezes the two shielding members 7, causing the two shielding members 7 to rotate in opposite directions along the adjacent rotating rods 6 respectively. The distance between the two shielding members 7 gradually increases, and the shielding member 7 drives the sliding rod 35 to move through the adjacent fixed frame 34. The sliding rod 35 squeezes the elastic member between it and the push-pull rod 33. The elastic member is compressed under pressure and applies resistance to the shielding member 7 through the sliding rod 35 and the fixed frame 34 to ensure that the plastic is firmly clamped.

[0046] As the plastic moves downward, when the lower side of the plastic contacts the two crushing rollers 4, the relative rotation of the two crushing rollers 4 squeezes and shears the contacted plastic, thereby crushing the plastic. During this process, the two crushing rollers 4 will drive the plastic to continue to move downward, that is, the two crushing rollers 4 gradually drive the plastic to move downward, so the operator no longer needs to apply extrusion force to the plastic. As the crushing rollers 4 rotate, the two crushing rollers 4 carry the plastic between them and move downward and discharge it through the lower side of the processing shell 3. The operator repeats the above operation and puts the remaining plastic into the feed shell 2 in turn until all the plastic is crushed. After completion, the drive module 5 is turned off, the two crushing rollers 4 stop rotating, and the two shielding members 7 are restored to their initial distance under the action of the elastic members on the push-pull rod 33.

[0047] During the process of crushing the plastic, the lower parts of the two shielding members 7 block the flying plastic particles, reducing the amount of flying plastic particles discharged back from the feed shell 2, ensuring the life safety of the operator, and when the flying plastic particles contact the lower part of the shielding member 7, the flying plastic particles will be guided by the lower part of the shielding member 7 and rebounded again to between the two crushing rollers 4, so that the plastic particles will contact the two crushing rollers 4 again, which is convenient for crushing the plastic particles and improves the crushing efficiency.

[0048] Example 2: This example provides a recycling and crushing device for flame retardant masterbatch. Based on Example 1, it mainly proposes a method of controlling the particle size of the crushed plastic by controlling the falling speed of the plastic during the plastic crushing process. This function is based on the fact that the existing plastic crushing device cannot change the size of the crushed material during use, and can only be achieved by replacing the roller, and the time for replacing the roller affects the crushing efficiency.

[0049] Further, such as Figure 2-Figure 7 and Figure 11 As shown, it also includes: a speed control mechanism, which has two and is respectively arranged on adjacent shielding members 7, for controlling the falling speed of the material, thereby changing the particle size of the material after being crushed, and the speed control mechanism includes: a transmission shaft 41, which has multiple transmission shafts 41, all of which are rotatably connected to adjacent shielding members 7 and have different heights; a plurality of squeezing rollers 42 are fixed to the transmission shaft 41; a power module 43, which is installed on adjacent shielding members 7, for driving all transmission shafts 41 to rotate.

[0050] In the above scheme, each shielding member 7 has two transmission shafts 41 distributed up and down, and an anti-slip strip is provided on the outside of the extrusion roller 42, and the anti-slip strip is parallel to the horizontal plane to ensure close fit to the plastic, so as to facilitate driving the plastic to move downward; the power module 43 is composed of a driving motor and two sets of pulley belts, one set of pulley belts connects the output shaft of the driving motor and one of the transmission shafts 41, and the other set of pulley belts connects the two transmission shafts 41; the rotation directions of the extrusion rollers 42 on different shielding members 7 are opposite, and the rotation of the extrusion rollers 42 is used to drive the plastic to move downward.

[0051] When the driving module 5 is turned on, the two power modules 43 are turned on. The power modules 43 drive the two adjacent transmission shafts 41 to rotate, and the transmission shafts 41 drive the squeezing rollers 42 thereon to rotate. During this process, the operator adjusts the driving force of the power module 43, thereby adjusting the rotation speed of the squeezing rollers 42 until the rotation speed of the squeezing rollers 42 is adjusted to an appropriate speed. The process of putting the plastic in Example 1 is repeated until the plastic contacts all the squeezing rollers 42 on the upper layer. The squeezing rollers 42 on the upper layer squeeze the plastic and drive the plastic to move downward. Subsequently, the plastic passes through the squeezing rollers 42 on the lower side, so that all the squeezing rollers 4 drive the plastic to move downward together until the lower side of the plastic contacts the crushing rollers 4. The crushing rollers 4 crush the plastic. During this process, the crushing rollers 4 are always in contact with the lower side of the plastic and cannot drive the plastic to move downward. The downward movement distance of the plastic is controlled by all the squeezing rollers 42, thereby adjusting the crushing time of the plastic by the crushing rollers 4, and adjusting the particle size of the plastic after crushing, thereby improving the applicability of the device.

[0052] When crushing plastic, the operator adjusts the rotation speed of the drive shaft 41 according to the required particle size of the plastic. When the feeding speed of the plastic corresponds to the formed particle size, the rotation speed of the drive shaft 41 is at an appropriate speed. As the required particle size becomes smaller, the feeding speed of the plastic becomes slower, and vice versa, the feeding speed of the plastic becomes faster.

[0053] Based on the operation of adjusting the plastic feeding speed in this embodiment, the operator can also adjust the feeding speed according to the hardness of the plastic. As the hardness gradually increases, the plastic feeding speed is controlled to gradually decrease, thereby reducing the possibility of plastic particles splashing.

[0054] Example 3: This example provides a recycling and crushing device for flame retardant masterbatch. Based on Example 2, it mainly proposes a method of changing the force direction of the plastic during the plastic crushing process to enhance the effect of plastic crushing.

[0055] like Figure 2-Figure 7 and Figure 11As shown, all the squeezing rollers 42 on the same shielding member 7 and different transmission shafts 41 are staggered, and all the squeezing rollers 42 on different shielding members 7 and at the same height are staggered. By setting the above positions, the plastic is subjected to more uniform force when being crushed, thereby ensuring the stability of the plastic during crushing; the squeezing rollers 42 on both sides of the shielding member 7 are provided with spiral strips, and the spiral directions of the spiral strips on the two squeezing rollers 42 are opposite. The spiral strips are used to guide the passing plastic. The spiral strips proposed here are made of the same material as the anti-slip strips in the above embodiment, but have different shapes. During the rotation of the spiral strips, the passing plastic will tend to move toward the middle, which facilitates the contact between the plastic and the middle of the crushing roller 4. Since the middle of the crushing roller 4 is the main action area of ​​crushing, the roller surface is usually designed to be in close contact or with a small gap, and the material is crushed by extrusion and shear force, thereby improving the crushing efficiency of the plastic.

[0056] In this embodiment, the squeezing roller 42 is detachably connected to the transmission shaft 41, so that the position of the squeezing roller 42 with the spiral strips can be changed. Initially, the squeezing roller 42 with the spiral strips is located on the left and right sides of the shielding member 7, so that the workload of the middle part of the crushing roller 4 is greater than that of the two sides. If the loss in the middle is too high and the crushing requirements cannot be met, the operator can change the position of the squeezing roller 42 with the spiral strips so that the squeezing roller 42 is located in the middle and exerts a tendency to move the plastic to both sides, so that the two sides of the crushing roller 4 mainly perform the crushing work, thereby extending the service life of the crushing roller 4.

[0057] Example 4: This example provides a recycling and crushing device for flame retardant masterbatch. Based on Example 1, it mainly proposes changing the clamping position of the plastic, extending the clamping time, and improving the stability of the plastic crushing.

[0058] like Figure 1-Figure 5 and Figure 8 As shown, it also includes: a swing mechanism, which has two, respectively arranged on both sides of the rotating rod 6, for adjusting the position of the shielding member 7, and the swing mechanism includes: a stabilizing rod 51, which is rotatably connected between the two rotating rods 6, and the stabilizing rod 51 is rotatably connected to the driving frame 52; an electric push rod 53, which is hinged to the feed shell 2, and the telescopic end of the electric push rod 53 is fixed to the driving frame 52.

[0059] In the above solution, the middle portion of the stabilizing rod 51 is curved, and the stabilizing rod 51 is located on one side of the two rotating rods 6. The driving frame 52 is used to drive the stabilizing rod 51 to move. In this embodiment, the rotating rod 6 has no direct relationship with the housing 1.

[0060] During the plastic crushing process, when the upper side of a piece of plastic loses contact with the two shielding members 7, the plastic will continue to move downward under the action of the two crushing rollers 4. However, the plastic will deflect or even break due to the loss of clamping, resulting in the plastic being unable to continue to be located between the two crushing rollers 4, making it impossible for the plastic to be crushed in time, thereby reducing the crushing efficiency. To reduce the occurrence of the above situation, the specific operations are as follows:

[0061] In the process of moving the plastic downward along the two shielding members 7, when the upper part of the plastic is about to lose contact with the shielding member 7, the operator turns on one of the electric push rods 53 (take the electric push rod 53 on the right as an example), and the telescopic end of the electric push rod 53 drives the adjacent driving frame 52 to move downward, and the driving frame 52 drives the adjacent stabilizing bar 51 to move, and the stabilizing bar 51 drives the right parts of the two rotating rods 6 to deflect downward, and the two rotating rods 6 respectively drive the right parts of the adjacent shielding members 7 to deflect downward synchronously, so that the distance between the right part of the shielding member 7 and the crushing roller 4 is shortened. In this process, due to the inclination of the shielding member 7, the shielding member 7 drives the adjacent stabilizing bar 51 to deflect, and at the same time, the stabilizing bar 51 passes through the driving frame 52 drives the adjacent electric push rods 53 to swing, causing the two electric push rods 53 to deflect in opposite directions, thereby adapting to the deflection of the shielding member 7. During this process, the plastic will move downward at a slow and stable speed under the action of the two crushing rollers 4. The electric push rods 53 drive the right parts of the two shielding members 7 to deflect downward quickly, thereby causing the right parts of the two shielding members 7 to move downward along the plastic, changing the position of the two shielding members 7 clamping the plastic. At this time, the position where the right parts of the two shielding members 7 clamp the plastic is increased in distance from the upper side of the plastic, thereby extending the time for clamping the plastic, ensuring the stability of the plastic during movement, reducing the probability of the plastic being deflected or even broken, and thereby improving the efficiency of plastic crushing.

[0062] Example 5: This example provides a recovery and crushing device for flame retardant masterbatch. Based on Example 1, it mainly proposes a function of cleaning impurities stuck on the crushing roller.

[0063] like Figure 3 and Figure 9As shown, two rows of extrusion blocks 61 are fixed in the processing shell 3, and the two crushing rollers 4 are located between the two rows of extrusion blocks 61. In each row of extrusion blocks 61, the extrusion blocks 61 are staggered with the crushing teeth on the adjacent crushing rollers 4. The lower side of the extrusion blocks 61 is provided with a trapezoidal groove, so that two inclined protrusions are formed on the lower side of the extrusion blocks 61. The two inclined protrusions of the extrusion blocks 61 are used to squeeze the plastic residue stuck between the two adjacent crushing teeth, so that the stuck plastic residue is separated from between the two adjacent crushing teeth, thereby cleaning the crushing teeth of the crushing roller 4 and ensuring the efficiency of crushing the plastic; the extrusion blocks 61 are provided with symmetrically distributed inclined surfaces, which are used to guide the plastic residue, and guide the plastic residue splashed to the back side of the two crushing rollers 4 to the adjacent crushing teeth, so that the crushing teeth can drive the plastic residue to move between the two crushing rollers 4. By changing the position of the plastic residue, the plastic residue can be crushed again.

[0064] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A recycling and crushing device for flame retardant masterbatch, comprising an organic shell (1), wherein a feed shell (2) is fixed to and communicated with the upper side of the shell (1), a processing shell (3) is fixed to and communicated with the lower side of the shell (1), two crushing rollers (4) are rotatably connected in the processing shell (3), and a driving module (5) is installed in the shell (1), wherein the driving module (5) is used to drive the two crushing rollers (4) to rotate, and the two crushing rollers (4) rotate in opposite directions, characterized in that: Also included are: There are two rotating rods (6), both of which are arranged in the housing (1) and are located between the feed housing (2) and the processing housing (3); There are two shielding members (7), each of which is rotatably connected to the adjacent rotating rods (6); There are two adjustment mechanisms, both of which are arranged on the housing (1) and are used to adjust the resistance of the shielding member (7) to rotation on the adjacent rotating rod (6); Also included are: There are two speed control mechanisms, which are respectively arranged on adjacent shielding members (7) and are used to control the speed of the material falling, thereby changing the particle size of the material after being crushed. The speed control mechanism includes: There are multiple transmission shafts (41), all of which are rotatably connected to adjacent shielding members (7) and have different heights. A plurality of squeezing rollers (42) are fixedly connected to the transmission shafts (41); A power module (43) is mounted on the adjacent shielding member (7) and is used to drive all the transmission shafts (41) to rotate; All the squeezing rollers (42) on the same shielding member (7) and different transmission shafts (41) are staggered, and all the squeezing rollers (42) on different shielding members (7) and at the same height are staggered; The squeezing rollers (42) located on both sides of the shielding member (7) are both provided with spiral strips, and the spiral directions of the spiral strips on the two squeezing rollers (42) are opposite.

2. A flame retardant masterbatch recovery and crushing device according to claim 1, characterized in that: In the vertical direction, the distance between the two shielding members (7) changes from large to small and then from small to large.

3. A flame retardant masterbatch recovery and crushing device according to claim 2, characterized in that: Elastic strips (21) are fixedly connected to both sides of the feed shell (2), and the elastic strips (21) are fixedly connected to connecting plates (22). The two connecting plates (22) are located above the two shielding members (7).

4. A recycling and crushing device for flame retardant masterbatch according to claim 3, characterized in that: The regulating mechanism includes: A fixed frame (31) is fixedly connected to the adjacent rotating rod (6), the fixed frame (31) is fixedly connected to a fixed cylinder (32), the fixed frame (31) is rotatably and slidably connected to a push-pull rod (33), and the push-pull rod (33) is threadedly connected to the fixed cylinder (32); A fixed frame (34) hinged to the shielding member (7); The sliding rod (35) is slidably connected to the fixed frame (34) and is slidably connected to the fixed cylinder (32). An elastic member is fixedly connected between the sliding rod (35) and the push-pull rod (33).

5. The recycling and crushing device for flame retardant masterbatch according to claim 4, characterized in that: Also included are: There are two swing mechanisms, which are respectively arranged on both sides of the rotating rod (6) and are used to adjust the position of the shielding member (7). The swing mechanism includes: A stabilizing rod (51) is rotatably connected between the two rotating rods (6), and the stabilizing rod (51) is rotatably connected to a driving frame (52); An electric push rod (53) is hinged to the feed shell (2), and a telescopic end of the electric push rod (53) is fixedly connected to the drive frame (52).

6. A flame retardant masterbatch recovery and crushing device according to claim 5, characterized in that: Two rows of extrusion blocks (61) are fixedly connected in the processing shell (3), and the two crushing rollers (4) are located between the two rows of extrusion blocks (61). The crushing teeth of the extrusion blocks (61) in each row and the crushing teeth on the adjacent crushing rollers (4) are staggered.

7. A flame retardant masterbatch recovery and crushing device according to claim 6, characterized in that: The extrusion block (61) is provided with symmetrically distributed inclined surfaces.

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