Mixing and stirring device for modified plastic particles
By introducing a uniform material mechanism and an adjustment mechanism into the modified plastic granule mixing device, the modified plastic granules are tumbled at multiple angles, which solves the problem of insufficient mixing uniformity in traditional mixers and improves the mixing effect and the convenience of material handling.
Patent Information
- Application Number
- CN202520495829.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Traditional vertical mixers have poor mixing effect when mixing modified plastic granules, resulting in low mixing uniformity and failure to achieve vertical tumbling of materials.
A mixing device for modified plastic granules was designed. A uniform material mechanism drives the main body to swing back and forth, and the tilt angle of the main body can be adjusted by an adjustment mechanism. Combined with the stirring shaft and stirring rod, frequent tumbling at multiple angles is achieved to enhance the mixing effect.
It significantly improves the uniformity of mixing, ensures the blending stability and physical properties of modified plastic granules, and simplifies the handling of materials.
Smart Images
Figure CN223904255U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of mixing and stirring devices of modified plastic particles. BACKGROUND
[0002] Modified plastic particles refer to the plastic particles of general plastics and engineering plastics, which are modified by filling, blending, reinforcing and other methods to improve their flame retardance, strength, impact resistance, toughness and other properties.
[0003] In order to ensure the blending stability of modified plastic particles, and at the same time ensure the physical and mechanical properties of the material, it is necessary to achieve uniform mixing between each raw material particle and additive. The current stirring process is completed by a traditional vertical stirrer. However, the stirring effect of the traditional vertical stirrer is poor, and the material cannot roll over in the vertical direction, but can only be stirred horizontally. Therefore, the stirring uniformity is low and needs to be further improved. SUMMARY
[0004] In view of the above status of the prior art, the technical problem to be solved by the utility model is to provide a mixing and stirring device for modified plastic particles, which greatly improves the stirring effect and significantly improves the stirring uniformity, and effectively facilitates use.
[0005] The utility model solves the above technical problem by adopting the following technical scheme: a mixing and stirring device for modified plastic particles, comprising a main body, the main body comprising a cylinder, a cylinder cover detachably fixed at the top opening of the cylinder, and a stirrer provided on the cylinder cover, the stirrer comprising a stirring shaft concentrically provided in the interior of the cylinder, a plurality of stirring rods fixed on the stirring shaft, and a stirring motor fixed at the top of the cylinder cover, the rotating shaft of the stirring motor vertically downwardly penetrates the cylinder cover and is concentrically fixed at the upper end of the stirring shaft, characterized in that:
[0006] Further comprising a material uniformizing mechanism, the material uniformizing mechanism comprising a base, a ring frame rotatably provided at the top of the base, and a power assembly provided on the base and connected with the ring frame to drive the ring frame to reciprocally roll on a vertical plane, and the main body is detachably fixed in the ring frame;
[0007] A connecting mechanism is further provided between the main body and the ring frame, the connecting mechanism comprising a supporting plate, two side plates vertically fixed at the top of the supporting plate and symmetrically arranged left and right, an arc-shaped back plate vertically fixed at the top of the supporting plate and located behind the two side plates, and a flap provided above the supporting plate and located in front of the two side plates, the left and right side edges of the arc-shaped back plate are both arranged forward and respectively fixed at the rear side edges of the two side plates, the lower side edge of the flap is rotatably connected at the top of the supporting plate, and the left and right side edges of the flap are respectively detachably fixed at the front side edges of the two side plates;
[0008] The positioning cabin with a top opening is formed between the supporting plate, the arc-shaped back plate, the turning plate and the two side plates, the main body is arranged in the positioning cabin, and the positioning cabin is rotatably arranged in the circular ring frame.
[0009] The connecting mechanism further comprises at least two U-shaped supporting legs fixed to the front side outer wall of the turning plate.
[0010] Preferably, an adjusting mechanism is further arranged between the left and right side outer walls of the positioning cabin and the circular ring frame, the adjusting mechanism comprises a supporting plate vertically fixed to the inner part of the circular ring frame and a limiting block fixed to one side outer wall of the supporting plate and facing the positioning cabin, and the left and right side outer walls of the positioning cabin are rotatably connected to the two supporting plates respectively.
[0011] Preferably, an arc-shaped guide groove concentrically distributed with the rotation axis of the positioning cabin is formed on the side outer wall of the limiting block facing the positioning cabin, and correspondingly, a positioning shaft horizontally arranged and symmetrically distributed with each other is further fixed to the left and right side outer walls of the positioning cabin, and the two positioning shafts are movably inserted into the arc-shaped guide grooves in the limiting blocks in the two adjusting mechanisms respectively.
[0012] Preferably, at least two clamping units are further arranged on the limiting block, the clamping unit comprises a positioning pin movably inserted into the limiting block to have a radial elastic movement function towards the rotation axis of the positioning cabin and penetrates the arc-shaped guide groove, and the positioning pins in the at least two clamping units divide the arc-shaped guide groove into multiple limiting cells, the number of the limiting cells is one more than the number of the positioning pins, and the positioning shaft is arranged in one of the limiting cells.
[0013] Preferably, the clamping unit comprises a Z-shaped support, a spring, a stop block and a pull ring, one end of the Z-shaped support is fixed to the outer side of the limiting block, the outer end of the positioning pin is movably inserted into the other end of the Z-shaped support, the stop block is fixed to the positioning pin and located outside the limiting block, the spring is sleeved on the positioning pin and located between the stop block and the other end of the Z-shaped support and is always in a compressed state to make the positioning pin always have a tendency to be elastically reset radially towards the rotation axis of the positioning cabin, and the pull ring is fixed to the outer end of the positioning pin and located outside the Z-shaped support.
[0014] Preferably, two left-right symmetrically distributed pressing units are further arranged at the top opening of the positioning cabin, the pressing unit comprises a U-shaped pressing plate movably connected to the inner wall of the positioning cabin to have a function of moving back and forth along the axis of the cylinder, and two first knob screws movably inserted into the corresponding side of the positioning cabin and symmetrically distributed in front of and behind each other, the threaded ends of the two first knob screws are all inserted and screwed into the U-shaped pressing plate, the opening of the U-shaped pressing plate is arranged towards the direction of the cylinder cover, and an arc surface matched with the edge of the top outer wall of the cylinder cover is formed at both ends of the lower side corner of the opening of the U-shaped pressing plate.
[0015] Preferably, a lock catch unit is further arranged between the left or right side edge of the turning plate and the side plate on the same side, the lock catch unit comprises a seat block fixed on the outer wall of the side plate, a seat plate fixed on the left or right side edge of the turning plate and matched with the seat block, and a second knob screw inserted in the seat plate, the threaded end of the second knob screw is inserted and screwed in the seat block.
[0016] Preferably, two elastic supporting strips vertically arranged and respectively left-right symmetrical distributed are further fixed on the arc-shaped inner wall of the arc-shaped back plate, correspondingly, two rigid pressing strips vertically arranged and respectively left-right symmetrical distributed are further fixed on the outer wall of the side of the turning plate towards the main body, and a slope surface is formed at the rear corner of the lower end of each rigid pressing strip.
[0017] Preferably, the power assembly comprises a power motor fixed on the top of the base and located on one side of the circular ring frame, a first chain wheel concentrically fixed on the rotating shaft of the power motor, two transversely and rotatably connected supporting shafts arranged in parallel and respectively left-right symmetrical on the top of the base, a second chain wheel concentrically fixed on one of the supporting shafts, and a chain sleeved between the first chain wheel and the second chain wheel, and the circular ring frame is arranged between the two supporting shafts.
[0018] Preferably, the material uniformizing mechanism further comprises an arc-shaped anti-tilting frame fixed on the top of the base and located on the left side or the right side of the circular ring frame, correspondingly, a slope surface is further formed on the top of the right side or the left side of the base, and two front-rear symmetrical limiting strips are further fixed on the slope surface, and the spacing between the two limiting strips is greater than the front-rear width of the circular ring frame.
[0019] Compared with the prior art, the utility model has the advantages that: the utility model can not only drive the main body to reciprocate left and right by the material uniformizing mechanism, but also can make the main body be in an inclined state by the two adjusting mechanisms and can adjust the angle of inclination according to the needs, so that the raw material particles and additives located in the main body can be frequently rolled in multiple angles while being stirred, thereby greatly improving the stirring effect and the stirring uniformity to ensure the blending stability, physical and mechanical properties of the modified plastic particles; in addition, the main body can be easily removed by the connecting mechanism, thereby simplifying the taking and placing of materials and effectively facilitating the use. BRIEF DESCRIPTION OF DRAWINGS
[0020] The above and other features, advantages, and aspects of the embodiments of the present application will become more apparent by reference to the following detailed description taken in conjunction with the accompanying drawings; throughout the drawings, like reference numerals designate like elements; it should be understood that the drawings are schematic, and the sizes of the original and elements are not necessarily drawn to scale; in the drawings:
[0021] Fig. 1 It is a left front side exploded view of the utility model;
[0022] Fig. 2 This is a partially enlarged structural view of the present invention at point A;
[0023] Fig. 3 This is a structural diagram of the left rear side of the material leveling mechanism of this utility model. Detailed Implementation
[0024] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0026] like Figs. 1-3 As shown, a mixing and stirring device for modified plastic granules includes a main body 1. The main body 1 includes a cylinder 11, a detachable cylinder cover 12 fixed to the top opening of the cylinder 11, and a mixer provided on the cylinder cover 12. The mixer includes a stirring shaft 14 concentrically arranged inside the cylinder 11, a plurality of stirring rods 15 fixed on the stirring shaft 14, and a stirring motor 13 fixed to the top of the cylinder cover 12. The rotating shaft of the stirring motor 13 passes vertically downward through the cylinder cover 12 and is concentrically fixed to the upper end of the stirring shaft 14.
[0027] It also includes a material leveling mechanism 2, which includes a base 21, a rotatable ring frame 24 disposed on the top of the base 21, and a power component disposed on the base 21 and connected to the ring frame 24 to drive the ring frame 24 to reciprocate in a vertical plane. The main body 1 is detachably fixed in the ring frame 24.
[0028] The connecting mechanism 3 further comprises at least two U-shaped supporting legs 35 fixed on the front side outer wall of the turning plate 34.
[0029] The top of the supporting plate 31, the arc-shaped back plate 33, the turning plate 34 and the two side plates 32 forms a positioning cabin 36 with an open top, the main body 1 is arranged in the positioning cabin 36, and the positioning cabin 36 is rotatably arranged in the circular frame 24.
[0030] The connecting mechanism 3 further comprises at least two U-shaped supporting legs 35 fixed on the front side outer wall of the turning plate 34.
[0031] The left and right side outer walls of the positioning cabin 36 are each provided with an adjusting mechanism 4 between the circular frame 24, and the adjusting mechanism 4 comprises a supporting plate 41 fixed vertically in the circular frame 24 and a limiting block 42 fixed on the supporting plate 41 and facing one side outer wall of the positioning cabin 36, and the left and right side outer walls of the positioning cabin 36 are rotatably connected to the two supporting plates 41 respectively.
[0032] The limiting block 42 is provided with an arc-shaped guide groove 421 on the side outer wall facing the positioning cabin 36, and the arc-shaped guide groove 421 is concentrically distributed with the rotation axis of the positioning cabin 36, and correspondingly, the left and right side outer walls of the positioning cabin 36 are each fixed with a positioning shaft 48 arranged transversely and symmetrically, and the two positioning shafts 48 are respectively movably inserted into the arc-shaped guide grooves 421 in the limiting blocks 42 in the two adjusting mechanisms 4.
[0033] The limiting block 42 is further provided with at least two clamping units, and the clamping unit comprises a positioning pin 44 movably connected in the limiting block 42 to have a radial elastic movement function towards the rotation axis of the positioning cabin 36 and penetrates the arc-shaped guide groove 421, and the positioning pins 44 in the at least two clamping units divide the arc-shaped guide groove 421 into a plurality of limiting spaces 422, the number of the limiting spaces 422 is one more than the number of the positioning pins 44, and the positioning shaft 48 is arranged in one of the limiting spaces 422.
[0034] The clamping unit comprises a Z-shaped bracket 43, a spring 45, a stop block 46 and a pull ring 47. One end of the Z-shaped bracket 43 is fixed outside the limiting block 42, the outer end of the positioning pin 44 is movably inserted into the other end of the Z-shaped bracket 43, the stop block 46 is fixed on the positioning pin 44 and located outside the limiting block 42, the spring 45 is sleeved on the positioning pin 44 and located between the stop block 46 and the other end of the Z-shaped bracket 43 and is always in a compressed state to make the positioning pin 44 always have a radial elastic reset tendency towards the rotation axis of the positioning cabin 36, and the pull ring 47 is fixed on the outer end of the positioning pin 44 and located outside the Z-shaped bracket 43.
[0035] The top opening of the positioning cabin 36 is also provided with two left and right symmetrical distribution compression units. The compression unit comprises a U-shaped pressing plate 37 movably connected to the inner wall of the positioning cabin 36 to have the function of moving back and forth along the axis of the cylinder body 11, and two first knob screws 38 movably inserted into the corresponding sides of the positioning cabin 36 and symmetrically distributed front and back. The threaded ends of the two first knob screws 38 are inserted and screwed into the U-shaped pressing plate 37. The opening of the U-shaped pressing plate 37 is arranged towards the direction of the cylinder cover 12. The opening of the U-shaped pressing plate 37 is formed with an arc surface 371 at both ends of the lower side corner.
[0036] Two vertical grooves 361 are formed on the left and right sides of the top of the positioning cabin 36, and the threaded ends of the two first knob screws 38 are inserted into the two vertical grooves 361 respectively.
[0037] A lock catch unit is further arranged between the left and right side edges of the flap 34 and the same side of one side plate 32. The lock catch unit comprises a seat block 39 fixed on the outer wall of the side plate 32, a seat plate 310 fixed on the left or right side edge of the flap 34 and matched with the seat block 39, and a second knob screw 311 inserted into the seat plate 310. The threaded end of the second knob screw 311 is inserted and screwed into the seat block 39.
[0038] The left and right side edges of the flap 34 are formed with a flange 341 towards the direction of the same side of one side plate 32. The end edges of the two flanges 341 are matched with the front edges of the two side plates 32 respectively. The seat plate 310 in the lock catch unit is fixed on the outer wall of the flange 341.
[0039] Two elastic support strips 313 are further fixed on the arc-shaped inner wall of the arc-shaped back plate 33 and are vertically arranged and symmetrically distributed left and right respectively. Correspondingly, two rigid pressing strips 312 are further fixed on the outer wall of the side of the flap 34 towards the main body 1 and are vertically arranged and symmetrically distributed left and right respectively. The lower end rear corner of each rigid pressing strip 312 is formed with a slope surface 3121.
[0040] The power assembly comprises a power motor 25 fixed on the top of the base 21 and located at one side of the circular frame 24, a first sprocket 26 concentrically fixed on the rotating shaft of the power motor 25, two transversely and rotatably connected support shafts 22 symmetrically arranged on the top of the base 21, a second sprocket 27 concentrically fixed on one of the support shafts 22, and a chain 28 sleeved between the first sprocket 26 and the second sprocket 27, and the circular frame 24 is arranged between the two support shafts 22.
[0041] Two driving wheels 23 are also sleeved and fixed on each support shaft 22 and arranged concentrically and distributed front and back, and the outer circumferential edges of the front and back sides of the circular frame 24 are arranged between the four driving wheels 23, and a blocking ring 231 is also formed on the outer circumferential surface of each driving wheel 23, and each blocking ring 231 is arranged outside the circular frame 24 to prevent the circular frame 24 from moving front and back.
[0042] The uniform material mechanism 2 further comprises an arc-shaped anti-tilting frame 29 fixed on the top of the base 21 and located at the left side or the right side of the circular frame 24, and correspondingly, the top right side or the left side of the base 21 is also formed with an inclined surface 212, and two front and back symmetrically arranged limiting strips 210 are fixed on the inclined surface 212, and the distance between the two limiting strips 210 is greater than the front and back width of the circular frame 24.
[0043] The top of the base 21 is formed with a recess 211 between the two support shafts 22, and the part of the circular frame 24 between the two support shafts 22 is sunken in the recess 211 to prevent the circular frame 24 from tilting front and back during rolling.
[0044] Working principle: sequentially unscrew the second knob screw 311 in each locking unit until the threaded end is away from the seat block 39, then pull the two U-shaped supporting legs 35 forward and downward by hand to drive the flap 34 to swing downward until the two U-shaped supporting legs 35 abut against the bottom surface, so that the flap 34 is in a horizontal state; then sequentially loosen the two first knob screws 38 in each pressing unit, and then move the U-shaped pressing plate 37 upward so that the two arc surfaces 371 on the U-shaped pressing plate 37 are away from the top outer wall of the cylinder cover 12, and then the main body 1 can be pushed and pulled forward to make the bottom of the cylinder body 11 slide onto the two rigid pressing strips 312 through the slope surfaces 3121 on the two rigid pressing strips 312, so that the main body 1 is moved forward to the front of the circular frame 24, and the two flanges 341 can prevent the main body 1 from deviating too much to the left or right during movement, and the two U-shaped supporting legs 35 effectively support the main body 1.
[0045] Then, the barrel cover 12 can be opened and the stirrer on the barrel cover 12 is removed, and then the multiple raw material particles to be stirred are poured into the barrel 11 in a certain proportion, and then the barrel cover 12 is closed and the stirrer is reset; then the main body 1 is pushed backward to make the main body 1 return to the positioning cabin 36, and then the flap 34 is turned up in the same way and is fixed by the two locking units; then the U-shaped pressing plate 37 in each pressing unit is moved downward to make the two arc surfaces 371 on the U-shaped pressing plate 37 press the outer wall of the top of the barrel cover 12 again, and finally each two first knob screws 38 are tightened in turn, so that the main body 1 can be effectively prevented from moving up and down; in addition, when the flap 34 is turned up and locked, the two rigid pressing strips 312 will gradually press the front and rear outer walls of the barrel 11, thereby forcing the barrel 11 to move slightly backward, so that the ends of the two elastic supporting strips 313 are pressed on the rear outer wall of the barrel 11 by the deformation characteristics of the two elastic supporting strips 313, thereby effectively preventing the barrel 11 from moving forward and backward.
[0046] When the stirring motor 13 in the stirrer is started, the rotating shaft of the stirring motor 13 drives the stirring shaft 14 and the multiple stirring rods 15 to rotate, thereby stirring the multiple raw material particles in the barrel 11, and the above principle is the prior art.
[0047] At this time, the power motor 25 in the power assembly can be started to make the rotating shaft of the power motor 25 alternately rotate forward and reverse by a certain angle, thereby driving the second sprocket 27 on one supporting shaft 22 to rotate by the first sprocket 26, the second sprocket 27 and the chain 28, thereby driving the circular ring frame 24 to reciprocatingly roll by a certain amplitude by the two drive wheels 23 on the supporting shaft 22, thereby driving the main body 1 to reciprocatingly swing left and right by the positioning cabin 36, so that the uniformity of stirring can be effectively improved.
[0048] In addition, the power motor 25 can be temporarily stopped, and then the positioning pins 44 in the clamping units at the same height in the two adjusting mechanisms 4 are pulled at the same time to make the inner ends of the positioning pins 44 away from the arc-shaped guide grooves 421, thereby making the limiting grooves 422 on the adjacent two sides of the positioning pin 44 open to each other, and then the positioning cabin 36 can be swung forward or backward to make the two positioning shafts 48 on the positioning cabin 36 move from the two limiting grooves 422 to the adjacent two limiting grooves 422, and then the two positioning pins 44 are loosened at the same time to make them automatically elastically reset and penetrate the arc-shaped guide grooves 421, thereby making the limiting grooves 422 on the adjacent two sides of the positioning pin 44 which have been opened to each other separate again, and after the positioning cabin 36 is loosened, the two positioning shafts 48 will stay in the limiting grooves 422 and remain stationary, so that the forward and backward inclination angles of the positioning cabin 36 are adjusted, thereby making the main body 1 remain at an inclined angle, so that the multiple raw material particles in the barrel 11 are stirred at an inclined angle, thereby effectively improving the uniformity of stirring.
[0049] Finally, the power motor 25 in the power assembly can be started again to drive the main body 1 to reciprocate left and right by means of the ring frame 24, and the main body 1 also swings forward and backward at the same time, thereby maximizing the uniformity of the stirring.
[0050] When the ring frame 24 needs to be removed, the main body 1 can be removed first, and then the ring frame 24 is pushed towards the direction of the inclined surface 212, so that the ring frame 24 rolls onto the inclined surface 212 and slowly rolls along the inclination of the inclined surface 212 between the two limiting strips 210, and the two limiting strips 210 can prevent the ring frame 24 from shifting forward and backward when rolling.
[0051] The utility model can not only drive the main body 1 to reciprocate left and right by means of the uniform material mechanism 2, but also can make the main body 1 be in the state of inclination by means of the two adjusting mechanisms 4 and can adjust the angle of inclination according to the needs, so that the raw material particles and additives located in the main body 1 can realize multi-angle frequent tumbling while stirring, thereby greatly improving the stirring effect, and significantly improving the stirring uniformity to ensure the blending stability of the modified plastic particles and the physical and mechanical properties; in addition, the main body 1 can be easily removed by means of the connecting mechanism 3 to simplify the taking and placing of materials, thereby effectively facilitating the use.
[0052] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A mixing and stirring device for modified plastic particles, comprising a main body, the main body comprising a barrel, a detachable barrel cover fixed at the top opening of the barrel, and a stirrer provided on the barrel cover, the stirrer comprising a stirring shaft concentrically arranged inside the barrel, a plurality of stirring rods fixed on the stirring shaft, and a stirring motor fixed on the top of the barrel cover, the rotating shaft of the stirring motor vertically downwardly penetrating through the barrel cover and being fixed at the upper end of the stirring shaft concentrically, characterized in that: a material homogenizing mechanism is further provided, the material homogenizing mechanism comprising a base, a rotatable ring frame provided on the top of the base, and a power assembly provided on the base and connected with the ring frame to drive the ring frame to reciprocally roll on a vertical plane, the main body being detachably fixed in the ring frame; a connecting mechanism is further provided between the main body and the ring frame, the connecting mechanism comprising a supporting plate, two vertical side plates fixed on the top of the supporting plate and arranged symmetrically left and right, an arc-shaped back plate fixed vertically on the top of the supporting plate and located behind the two side plates, and a turning plate provided above the supporting plate and located in front of the two side plates, the left and right side edges of the arc-shaped back plate being arranged forward and fixed on the rear side edges of the two side plates respectively, the lower side edge of the turning plate being rotatably connected on the top of the supporting plate, and the left and right side edges of the turning plate being detachably fixed on the front side edges of the two side plates respectively; the supporting plate, the arc-shaped back plate, the turning plate and the two side plates form a positioning cabin with a top opening, the main body being arranged in the positioning cabin, and the positioning cabin being rotatably arranged in the ring frame; the connecting mechanism further comprises at least two U-shaped supporting legs fixed on the front side outer wall of the turning plate. At least two adjusting mechanisms are further provided between the left and right side outer walls of the positioning cabin and the ring frame, each adjusting mechanism comprising a supporting plate fixed vertically inside the ring frame and a limiting block fixed on one side outer wall of the supporting plate towards the positioning cabin, and the left and right side outer walls of the positioning cabin being rotatably connected on the two supporting plates respectively. An arc-shaped guide groove is provided on one side outer wall of the limiting block towards the positioning cabin, and correspondingly, a positioning shaft is fixed on each of the left and right side outer walls of the positioning cabin, the positioning shaft being arranged horizontally and symmetrically distributed, and the two positioning shafts being movably inserted into the arc-shaped guide groove of the limiting block in the two adjusting mechanisms respectively. At least two clamping units are further provided on the limiting block, each clamping unit comprising a positioning pin movably inserted into the limiting block to have a radial elastic movement function towards the rotation axis of the positioning cabin and penetrating through the arc-shaped guide groove, the positioning pins in the at least two clamping units dividing the arc-shaped guide groove into a plurality of limiting cells, the number of the limiting cells being one more than the number of the positioning pins, and the positioning shaft being arranged in one of the limiting cells. 2. The mixing and stirring device for modified plastic particles according to claim 1, characterized in that 3. The mixing and stirring device for modified plastic particles according to claim 2, characterized in that 4. The mixing and stirring device for modified plastic particles according to claim 3, wherein 5. The mixing and stirring device for modified plastic particles according to claim 4, characterized in that The clamping unit comprises a Z-shaped support, a spring, a stopper and a pull ring, one end of the Z-shaped support is fixed outside the limiting block, the outer end of the positioning pin is movably inserted into the other end of the Z-shaped support, the stopper is fixed on the positioning pin and located outside the limiting block, the spring is sleeved on the positioning pin and located between the stopper and the other end of the Z-shaped support and is always in a compressed state to make the positioning pin always have a radial elastic reset tendency towards the rotation axis of the positioning cabin, and the pull ring is fixed on the outer end of the positioning pin and located outside the Z-shaped support.
6. The mixing and stirring device for modified plastic particles according to claim 1, wherein The top opening of the positioning cabin is also provided with two left and right symmetrical pressing units, the pressing unit comprises a U-shaped pressing plate movably connected to the inner wall of the positioning cabin to have the function of moving back and forth along the axis of the cylinder, and two first knob screws movably inserted into the corresponding sides of the positioning cabin and symmetrically distributed front and back, the threaded ends of the two first knob screws are inserted and screwed into the U-shaped pressing plate, the opening of the U-shaped pressing plate is arranged towards the direction of the cylinder cover, and the lower corners of the two ends of the opening of the U-shaped pressing plate are formed with an arc surface matched with the edge of the top outer wall of the cylinder cover.
7. The mixing and stirring device for modified plastic particles according to claim 1, wherein A lock unit is further arranged between the left and right side edges of the turning plate and the same side side plate, the lock unit comprises a seat block fixed on the outer wall of the side plate, a seat plate fixed on the left or right side edge of the turning plate and matched with the seat block, and a second knob screw inserted into the seat plate, and the threaded end of the second knob screw is inserted and screwed into the seat block.
8. The mixing and stirring device for modified plastic particles according to claim 1, characterized in that Two vertically arranged and left and right symmetrically distributed elastic support strips are further fixed on the arc-shaped inner wall of the arc-shaped back plate, and correspondingly, two vertically arranged and left and right symmetrically distributed rigid pressing strips are further fixed on the outer wall of the side of the turning plate towards the main body, and a slope is formed at the lower end rear corner of each rigid pressing strip.
9. The mixing and stirring device for modified plastic particles according to claim 1, wherein The power assembly comprises a power motor fixed on the top of the base and located on one side of the circular ring frame, a first sprocket concentrically fixed on the rotating shaft of the power motor, two transversely and rotatably connected support shafts on the top of the base and symmetrically arranged parallel to each other, a second sprocket concentrically fixed on one of the support shafts, and a chain sleeved between the first sprocket and the second sprocket, and the circular ring frame is arranged between the two support shafts.
10. The mixing and stirring device for modified plastic particles according to claim 1, characterized in that The uniform material mechanism further comprises an arc-shaped anti-tilting frame fixed on the top of the base and located on the left side or the right side of the circular ring frame, and correspondingly, a slope is formed on the top right side or left side of the base, two front and back symmetrically arranged limiting strips are further fixed on the slope, and the distance between the two limiting strips is greater than the front and back width of the circular ring frame.