CN221475704U - Plastic mixing equipment for plastic processing - Google Patents

Abstract

The utility model discloses plastic mixing equipment for plastic processing, which comprises a mixing cylinder with an opening at the top, wherein the top of the mixing cylinder is movably contacted with a top cover, a feeding pipe communicated with the inside of the mixing cylinder is embedded and fixed at the left side of the top cover, and electric push rods with extension ends fixedly connected with the bottom of the top cover are fixedly arranged at two sides of the mixing cylinder. According to the utility model, a series of structures are arranged, so that plastic raw materials can be sheared and stirred uniformly in the mixing cylinder, the L-shaped scraping pipe can be directly driven to rotate by the rotary pipe to perform rotary scraping and water spraying flushing, the cleaning effect on plastic with high viscosity is improved under the combination of scraping and water spraying modes, a sliding groove is not arranged at the bottom, the rotary cleaning stability is improved, the plastic residue blocking phenomenon at the bottom can be avoided, the top of the mixing cylinder is conveniently and rapidly unsealed, the internal stirring structure parts are lifted out, the inside of the mixing cylinder is conveniently observed and maintained by personnel, and the use flexibility is improved.

Description

Plastic mixing equipment for plastic processing

Technical Field

The utility model relates to the technical field of plastic mixing equipment, in particular to a plastic mixing equipment used for plastic processing.

Background technique

Degradable plastic refers to plastic that has a certain amount of additives added during the production process to reduce its stability and make it easier to degrade in the natural environment. The main component of plastic is high molecular weight synthetic resin. During the processing of degradable plastic, stirring and material changing equipment is required to mix the materials. Traditional plastic mixing equipment usually has a stirring shaft in a mixing box, and a stirring rod is fixedly connected to the stirring shaft. The stirring shaft in the mixing box usually rotates in one direction. Especially when stirring viscous plastic raw materials and additives, no shearing effect is generated on the viscous raw materials during stirring, which may cause uneven stirring.

In this regard, after searching, publication number CN218053408U discloses a mixing device for producing biodegradable and environmentally friendly plastics, which relates to the field of plastic processing mixing equipment, including a mixing box, a feeding hopper and a discharging port are provided on the mixing box, and a mixing structure is provided in the mixing box. A cleaning structure is also provided in the mixing box, and the cleaning structure includes a through pipe that can make a circular motion on the bottom plate of the mixing box, the through pipe is connected to an external water source, and a plurality of through holes are opened on the through pipe, and a high-pressure nozzle is fixedly connected to each through hole. The mixing structure includes a main stirring shaft that rotates freely in the middle of the mixing box, and a slave stirring shaft that is evenly distributed and can rotate freely around the main stirring shaft. The slave stirring shaft and the main stirring shaft rotate in opposite directions in the mixing box. A stirring rod is fixedly connected to the slave stirring shaft and the main stirring shaft. The stirring rod fixedly connected to the slave stirring shaft and the stirring rod fixedly connected to the main stirring shaft are staggered in the vertical direction. The mixing structure can generate shear force on viscous plastic raw materials or additives while expanding the stirring range, so that they can be mixed more evenly, further ensuring the processing quality.

The above patent discloses a mixing device for producing biodegradable and environmentally friendly plastics. By setting a main stirring shaft, two slave stirring shafts and multiple stirring rods, the stirring rods on both sides and the middle stirring rod can be driven to rotate in different directions to form a relative shear stirring effect, so that the plastic mixing is more uniform. The through pipe of the cleaning structure is prevented from making a circular motion on the bottom plate of the mixing box, and the high-pressure nozzle on the through pipe can be used to flush the inside. However, there are still the following shortcomings:

1. The circular axis movement of the through pipe is achieved through the cooperation of the annular chute and the slider opened on the bottom of the mixing box, combined with the reaction force of the water spraying; since the plastic raw materials have a certain viscosity, after discharge, a part of the raw materials are easy to condense inside the chute to form a blocking damping for the slider, making it difficult for the slider and the through pipe to stably perform circular axis movement and spray water, and the cleaning stability after use is not ideal, and the simple water spray cleaning method is not ideal for the cleaning effect of plastic raw materials with high viscosity; 2. The mixing box is closed as a whole, and the stirring shaft is connected in an integrated manner up and down, which makes it inconvenient for personnel to quickly open it for internal observation and maintenance work later; in view of this, we propose a plastic mixing equipment for plastic processing.

Utility Model Content

The purpose of the utility model is to provide a plastic mixing device for plastic processing to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic mixing device for plastic processing, comprising a mixing barrel with an opening at the top, a top cover movably contacting the top of the mixing barrel, a feed pipe connected to the inside of the mixing barrel embedded and fixed on the left side of the top of the top cover, electric push rods whose protruding ends are fixedly connected to the bottom of the top cover are fixedly installed on both sides of the mixing barrel, and the top cover is driven to open upward or close downward quickly by two electric push rods, so as to facilitate personnel to observe and maintain the inside of the mixing barrel later;

The bottom of the top cover is fixedly connected to a fixing box with an opening at the top, a rotating tube and two rotating shafts are rotatably connected to the inner wall of the bottom of the fixing box, the rotating tube is located between the two rotating shafts, and multiple stirring rods located below the fixing box are fixedly connected to the outer sides of the rotating tube and the two rotating shafts, and the same linkage component is fixedly sleeved on the rotating tube and the two rotating shafts, and the linkage component is used to synchronously drive the two rotating shafts to rotate when the rotating tube rotates, and the rotation of the three is used to drive the multiple stirring rods to shear, stir and mix the plastic raw materials;

The top of the top cover is fixedly connected with a guard shield, a fixed sleeve on the rotating tube is provided with a rotating drive assembly located in the guard shield, a driving motor whose output shaft is fixedly installed on the top of the guard shield and is fixedly connected with the rotating drive assembly, a water pump is fixedly installed on the top of the guard shield, a rotating sleeve of the rotating tube sealing is arranged outside the water outlet of the water pump, the rotating drive assembly is used to drive the rotating tube to rotate when the driving motor is started, and the water pump is used to supply water to the rotating tube when starting;

A positioning ball is fixedly embedded on the bottom inner wall of the mixing barrel, the bottom end of the rotating tube is arranged as a blocking structure and is provided with a hemispherical groove which is in movably contact with the outer side of the positioning ball, the right bottom of the rotating tube is connected and fixed with a plastic scraping assembly, the plastic scraping assembly is in movably contact with the right inner wall and the bottom inner wall of the mixing barrel, the plastic scraping assembly is used for scraping and cleaning the inside of the mixing barrel when the rotating tube rotates, and for letting out water in the rotating tube for spraying and flushing.

Preferably, the linkage assembly includes two first gears and a second gear arranged in a fixed box, the second gear meshing between the two first gears, the two first gears are fixedly sleeved on the corresponding rotating shafts, and the second gear is fixedly sleeved on the rotating tube; the two first gears and the second gear cooperate to drive the second gear to rotate when the rotating tube rotates, and the second gear drives the two first gears to rotate synchronously in the opposite direction thereof, and the rotation of the two first gears is utilized to drive the two rotating shafts to rotate synchronously in the opposite direction to the rotating tube.

Preferably, the rotation drive assembly includes a third gear fixedly mounted on the rotating tube, a fourth gear is meshed on the right side of the third gear, the top of the fourth gear is fixedly connected to the bottom end of the output shaft of the driving motor, and the fourth gear and the third gear are both located in the protective cover; the third gear and the fourth gear cooperate with each other, and when the driving motor starts to drive the fourth gear to rotate, the fourth gear drives the third gear meshed with it to rotate, and the rotating third gear is used to drive the rotating tube to rotate.

The top of the L-shaped scraper is set as a blocking structure, and the right side and bottom of the L-shaped scraper are movably contacted with the right inner wall and the bottom inner wall of the mixing barrel respectively; the arranged L-shaped scraper, the water through hole and the water spray head cooperate to drive the L-shaped scraper and the multiple water spray heads to rotate when the rotating tube rotates, and the rotation of the L-shaped scraper is used to realize the rotation scraping and cleaning of the plastic adhered to the side wall and the bottom inner wall of the mixing barrel. After the water enters the rotating tube, it will enter the L-shaped scraper through the water through hole, and then be sprayed out by the multiple rotating water spray heads to rotationally spray and rinse the inner wall of the mixing barrel.

Preferably, a through hole is opened on the top of the top cover, and the rotating tube is located in the through hole and does not contact the inner wall of the through hole.

Preferably, a first sealing bearing is provided in the fixed sleeve inside the rotating tube, and the inner ring of the first sealing bearing is fixedly sleeved with the outer side of the water outlet of the water pump.

Preferably, the bottom of the mixing barrel is rectangular and fixedly connected with four legs, and the left side of the bottom of the mixing barrel is connected and fixed with a discharge valve.

Preferably, a synchronous control switch is fixedly connected to the rear side of the electric push rod located on the left side, and both electric push rods are electrically connected to the synchronous control switch.

Compared with the prior art, the beneficial effects of the utility model are:

1. This plastic mixing equipment for plastic processing can shear and stir the plastic raw materials in the mixing barrel to mix them evenly through the cooperation of the driving motor, rotating tube, rotating shaft, stirring rod, linkage assembly and rotating driving assembly;

2. This plastic mixing equipment for plastic processing can directly drive the rotating tube to rotate through the cooperation of the set driving motor, rotating driving component, rotating tube, plastic scraping component and water pump, and directly drive the L-shaped scraping tube to rotate through the rotating tube to perform rotary scraping and water spraying flushing, so as to achieve the effect of integrated rapid automatic cleaning of the inside of the mixing barrel after use, and the combination of scraping and water spraying can improve the cleaning effect of plastics with high viscosity, and the direct drive rotation method is used, so there is no need to set a sliding groove at the bottom, which can improve the stability of rotary cleaning and avoid the phenomenon of plastic residue jam at the bottom;

3. This plastic mixing equipment used for plastic processing can quickly unseal the top of the mixing barrel and lift out the internal stirring structure parts through the cooperation of the top cover, electric push rod, fixing box and positioning ball, so as to facilitate the removal of the obstruction for personnel to observe and maintain the inside of the mixing barrel, thereby improving the flexibility of use.

The utility model is provided with a series of structures, which is convenient for shearing and stirring the plastic raw materials in the mixing barrel to evenly mix the materials, and is convenient for using the rotating tube to directly drive the L-shaped scraper tube to rotate for rotary scraping and water spraying and flushing. With the combination of the scraping and water spraying methods, the cleaning effect of plastics with high viscosity is improved, and there is no need to set a sliding groove on the bottom, which improves the stability of rotary cleaning and can avoid the jamming of plastic residues at the bottom. It is convenient to quickly unseal the top of the mixing barrel and lift out the internal stirring structure parts, which is convenient for personnel to remove the shielding to observe and maintain the inside of the mixing barrel, thereby improving the flexibility of use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the main structure of the utility model;

Fig. 2 is a schematic cross-sectional view of the utility model;

FIG3 is an enlarged structural schematic diagram of part A in FIG2 of the present invention.

In the figure: 1, mixing barrel; 101, top cover; 102, electric push rod; 2, protective cover; 3, fixed box; 4, rotating shaft; 5, stirring rod; 6, first gear; 7, second gear; 8, third gear; 9, fourth gear; 10, driving motor; 11, water pump; 12, L-shaped scraper; 13, water spray head; 14, positioning ball; 15, water hole; 16, rotating tube; 17, hemispherical groove.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

As shown in FIGS. 1 to 3 , a plastic mixing device for plastic processing proposed in the present embodiment comprises a mixing barrel 1 with an opening at the top, the bottom of the mixing barrel 1 is rectangular and fixedly connected with four legs, a discharge valve is connected and fixed on the left side of the bottom of the mixing barrel 1, the legs are provided to support the mixing barrel 1, and the discharge valve is provided for discharging after use, a top cover 101 is movably contacted at the top of the mixing barrel 1, a feed pipe connected to the inside of the mixing barrel 1 is embedded and fixedly mounted on the left side of the top of the top cover 101, electric push rods 102 whose protruding ends are fixedly connected to the bottom of the top cover 101 are fixedly installed on both sides of the mixing barrel 1, a synchronous control switch is fixedly connected to the rear side of the electric push rod 102 on the left side, and the two electric push rods 102 are electrically connected to the synchronous control switch, which facilitates the synchronous control of the two electric push rods 102, and the two electric push rods 102 are used to drive the top cover 101 to open quickly upward or close downward, which facilitates the subsequent observation and maintenance of the inside of the mixing barrel 1 by personnel;

The bottom of the top cover 101 is fixedly connected with a fixing box 3 with an opening at the top, and a rotating tube 16 and two rotating shafts 4 are rotatably connected on the bottom inner wall of the fixing box 3, wherein a first circular hole and two second circular holes are opened on the bottom inner wall of the fixing box 3, a second sealed bearing is fixedly sleeved in the first circular hole, a third sealed bearing is fixedly sleeved in the second circular hole, the inner ring of the second sealed bearing is fixedly sleeved with the outer side of the rotating tube 16, and the inner ring of the third sealed bearing is fixedly sleeved with the outer side of the corresponding rotating shaft 4, the rotating tube 16 and the rotating shaft 4 are rotatably connected with the bottom inner wall of the fixing box 3 through the second sealed bearing and the third sealed bearing respectively, so as to achieve the effect of sealing and rotating installation of the rotating tube 16 and the rotating shaft 4, the rotating tube 16 is located between the two rotating shafts 4, and the outer sides of the rotating tube 16 and the two rotating shafts 4 are fixedly connected with a plurality of stirring rods 5 located below the fixing box 3, and the rotating tube 16 and the two rotating shafts 4 are fixedly sleeved with the same linkage component, which is used to synchronously drive the two rotating shafts 4 to rotate when the rotating tube 16 rotates, and the rotation of the three is used to drive the plurality of stirring rods 5 to shear, stir and mix the plastic raw materials;

The top of the top cover 101 is fixedly connected with a guard shield 2, and a fixed sleeve on the rotating tube 16 is provided with a rotating drive component located in the guard shield 2, wherein a through hole is opened on the top of the top cover 101, and the rotating tube 16 is located in the through hole and does not contact with the inner wall of the through hole, so as to allow the top end of the rotating tube 16 to pass upward, and a driving motor 10 whose output shaft is fixedly connected with the rotating drive component is fixedly installed on the top of the guard shield 2, and a water pump 11 is fixedly installed on the top of the guard shield 2, and a sealing rotating sleeve of the rotating tube 16 is arranged on the outside of the water outlet of the water pump 11, wherein a first sealing bearing is fixedly provided in the rotating tube 16, and the inner ring of the first sealing bearing is fixedly fitted on the outside of the water outlet of the water pump 11, so as to achieve the effect of sealing and rotating installation of the rotating tube 16, and the rotating drive component is used to drive the rotating tube 16 to rotate when the driving motor 10 is started, and the water pump 11 is used to supply water to the rotating tube 16 when it is started;

A positioning ball 14 is fixedly embedded on the inner wall of the bottom of the mixing barrel 1, the bottom end of the rotating tube 16 is set as a blocking structure and is provided with a hemispherical groove 17 that is movably in contact with the outer side of the positioning ball 14. The positioning ball 14 is used to movably position the bottom end of the rotating tube 16. A plastic scraping assembly is fixed to the right bottom of the rotating tube 16. The plastic scraping assembly is in movably contact with the right inner wall and the bottom inner wall of the mixing barrel 1. The plastic scraping assembly is used to scrape and clean the inside of the mixing barrel 1 when the rotating tube 16 rotates, and is used to pass water in the rotating tube 16 for spraying and flushing.

Specifically, the linkage assembly includes two first gears 6 and a second gear 7 arranged in the fixed box 3, the second gear 7 is meshed between the two first gears 6, the two first gears 6 are fixedly sleeved on the corresponding rotating shafts 4, and the second gear 7 is fixedly sleeved on the rotating tube 16; the two first gears 6 and the second gear 7 cooperate with each other, and can drive the second gear 7 to rotate when the rotating tube 16 rotates, and the second gear 7 drives the two first gears 6 to rotate synchronously in the opposite direction thereof, and the rotation of the two first gears 6 is utilized to drive the two rotating shafts 4 to rotate synchronously in the opposite direction of the rotating tube 16.

Furthermore, the rotation drive assembly includes a third gear 8 fixedly mounted on the rotating tube 16, a fourth gear 9 meshing with the right side of the third gear 8, the top of the fourth gear 9 is fixedly connected to the bottom end of the output shaft of the driving motor 10, and the fourth gear 9 and the third gear 8 are both located in the protective cover 2; the third gear 8 and the fourth gear 9 are arranged to cooperate with each other, and when the driving motor 10 starts to drive the fourth gear 9 to rotate, the fourth gear 9 drives the third gear 8 meshing with it to rotate, and the rotating third gear 8 is utilized to drive the rotating tube 16 to rotate.

Furthermore, the plastic scraping assembly includes an L-shaped scraping tube 12 fixedly connected to the right bottom of the rotating tube 16, a water hole 15 connected to the inside of the L-shaped scraping tube 12 is opened on the right inner wall of the rotating tube 16, and the front and rear sides of the L-shaped scraping tube 12 are connected and fixed with multiple inclined water spray heads 13, the water spray head 13 located at the bottom is inclined downward, and the water spray head 13 located on the right is inclined to the right, the top of the L-shaped scraping tube 12 is set as a blocking structure, and the right and bottom of the L-shaped scraping tube 12 are respectively in active contact with the right inner wall and the bottom inner wall of the mixing barrel 1; the L The L-shaped scraper tube 12, the water hole 15 and the water spray head 13 cooperate with each other. When the rotating tube 16 rotates, it can drive the L-shaped scraper tube 12 and the multiple water spray heads 13 to rotate. The rotation of the L-shaped scraper tube 12 is used to realize the rotational scraping and cleaning of the plastic adhered to the side wall and the bottom inner wall of the mixing barrel 1. After the water enters the rotating tube 16, it will enter the L-shaped scraper tube 12 through the water hole 15, and then be sprayed out by the multiple rotating water spray heads 13 to rotationally spray and rinse the inner wall of the mixing barrel 1. The coordinated cleaning method of rotary spraying and rotary scraping is used to achieve the effect of convenient and quick automatic cleaning of the interior after use.

The method of using this embodiment is as follows: plastic raw materials and additives are added into the mixing barrel 1 through the feeding pipe, the driving motor 10 is started to drive the fourth gear 9 to rotate, the fourth gear 9 drives the rotating tube 16 to rotate through the third gear 8, the rotating tube 16 drives the second gear 7 to rotate, the second gear 7 drives the two first gears 6 to rotate synchronously in the opposite direction thereto, the two first gears 6 drive the two rotating shafts 4 to rotate synchronously in the opposite direction to the rotating tube 16, the two rotating shafts 4 and the rotating tube 16 respectively drive the corresponding stirring rods 5 to rotate, the stirring rod 5 outside the rotating shaft 4 and the stirring rod 5 outside the rotating tube 16 rotate in opposite directions, so as to achieve the effect of shearing, stirring and mixing the plastic raw materials, thereby achieving uniform mixing of the plastic raw materials;

After use, open the discharge valve to discharge the plastic raw materials. When cleaning is needed, turn on the water pump 11 and the drive motor 10 to make the rotating tube 16 rotate again. When the rotating tube 16 rotates, it also drives the L-shaped scraper tube 12 and the water spray head 13 to rotate. The L-shaped scraper tube 12 rotates and scrapes the plastic adhered to the side wall and the bottom inner wall of the mixing barrel 1 to clean it. The water inlet of the water pump 11 is connected to the external water supply pipeline. When the water pump 11 is turned on, it draws external water source and pumps it into the rotating tube 16. The water then enters the L-shaped scraper tube 12 through the water hole 15. Then, the inner wall of the mixing barrel 1 is sprayed and rinsed by multiple rotating water spray heads 13. The coordinated cleaning method of rotating spray and rotating scraping is used to facilitate the integrated and rapid automatic cleaning of the inside of the mixing barrel 1 after use. In addition, the combination of the scraping and water spraying methods improves the cleaning effect of plastics with high viscosity. In addition, the rotating tube 16 is directly used to drive the L-shaped scraper tube 12 to rotate. There is no need to set a sliding groove at the bottom, which improves the stability of the rotating cleaning and can avoid the phenomenon of plastic residue jamming at the bottom.

When it is necessary to observe and maintain the mixing barrel 1 later, the two electric push rods 102 are started in the positive direction to drive the top cover 101 to move upward. The top cover 101 drives the rotating shaft 4 and the rotating tube 16 to move upward through the fixed box 3. The rotating tube 16 drives the L-shaped scraper tube 12 to move upward. The rotating tube 16 is separated from the positioning ball 14, and the blocking of the interior by the sealing and stirring structure parts is released, which facilitates the personnel to observe and maintain the inside of the mixing barrel 1.

Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (8)

1. A plastics compounding equipment for plastics processing, includes compounding section of thick bamboo (1) that the top set up for the opening, its characterized in that: the top of the mixing barrel (1) is movably contacted with a top cover (101), a feeding pipe communicated with the inside of the mixing barrel (1) is embedded and fixed on the left side of the top cover (101), and electric push rods (102) with extension ends fixedly connected with the bottom of the top cover (101) are fixedly arranged on two sides of the mixing barrel (1);

the bottom of the top cover (101) is fixedly connected with a fixed box (3) with an opening at the top, a rotary pipe (16) and two rotary shafts (4) are rotatably connected to the inner wall of the bottom of the fixed box (3), the rotary pipe (16) is positioned between the two rotary shafts (4), a plurality of stirring rods (5) positioned below the fixed box (3) are fixedly connected to the outer sides of the rotary pipe (16) and the two rotary shafts (4), and the rotary pipe (16) and the two rotary shafts (4) are fixedly sleeved with the same linkage assembly;

The top of the top cover (101) is fixedly connected with a shield cover (2), a rotary driving assembly positioned in the shield cover (2) is fixedly sleeved on the rotary pipe (16), a driving motor (10) with an output shaft fixedly connected with the rotary driving assembly is fixedly installed at the top of the shield cover (2), a water pump (11) is fixedly installed at the top of the shield cover (2), and the rotary pipe (16) is hermetically and rotatably sleeved outside a water outlet of the water pump (11);

The plastic mixing barrel comprises a mixing barrel body and is characterized in that a positioning ball (14) is fixedly embedded on the inner wall of the bottom of the mixing barrel body (1), a hemispherical groove (17) which is in movable contact with the outer side of the positioning ball (14) is formed in the bottom end of a rotating pipe (16) and is arranged in a plugging structure, a plastic scraping assembly is fixedly communicated with the bottom of the right side of the rotating pipe (16), and the plastic scraping assembly is in movable contact with the inner wall of the right side of the mixing barrel body (1) and the inner wall of the bottom.

2. A plastic mixing device for plastic processing according to claim 1, characterized in that: the linkage assembly comprises two first gears (6) and two second gears (7) which are arranged in the fixed box (3), the second gears (7) are meshed between the two first gears (6), the two first gears (6) are respectively and fixedly sleeved on the corresponding rotating shafts (4), and the second gears (7) are fixedly sleeved on the rotating pipes (16).

3. A plastic mixing device for plastic processing according to claim 2, characterized in that: the rotary driving assembly comprises a third gear (8) fixedly sleeved on the rotary tube (16), a fourth gear (9) is meshed on the right side of the third gear (8), the top of the fourth gear (9) is fixedly connected with the bottom end of an output shaft of the driving motor (10), and the fourth gear (9) and the third gear (8) are both positioned in the shielding cover (2).

4. A plastic mixing device for plastic processing according to claim 3, characterized in that: the plastic scraping assembly comprises an L-shaped scraping pipe (12) fixedly connected to the right bottom of a rotary pipe (16), a water through hole (15) communicated with the inside of the L-shaped scraping pipe (12) is formed in the right inner wall of the rotary pipe (16), a plurality of water spraying heads (13) which are obliquely arranged are fixedly communicated with the front side and the rear side of the L-shaped scraping pipe (12), the water spraying heads (13) which are located at the lowest position are obliquely arranged downwards, the water spraying heads (13) which are located at the right side are obliquely arranged to the right, the top end of the L-shaped scraping pipe (12) is provided with a plugging structure, and the right side and the bottom of the L-shaped scraping pipe (12) are respectively in movable contact with the right inner wall and the bottom inner wall of a mixing drum (1).

5. A plastic mixing device for plastic processing according to claim 1, characterized in that: the top of the top cover (101) is provided with a through hole, and the rotary pipe (16) is positioned in the through hole and is not contacted with the inner wall of the through hole.

6. A plastic mixing device for plastic processing according to claim 1, characterized in that: the rotary pipe (16) is internally and fixedly sleeved with a first sealing bearing, and the inner ring of the first sealing bearing is fixedly sleeved with the outer side of the water outlet of the water pump (11).

7. A plastic mixing device for plastic processing according to claim 1, characterized in that: the bottom of the mixing cylinder (1) is provided with four supporting legs which are fixedly connected in a rectangular mode, and a discharge valve is fixedly communicated with the left side of the bottom of the mixing cylinder (1).

8. A plastic mixing device for plastic processing according to claim 1, characterized in that: the rear side of the electric push rods (102) positioned at the left side is fixedly connected with a synchronous control switch, and the two electric push rods (102) are electrically connected with the synchronous control switch.