Mixer for PVC film production

Abstract

The invention relates to the technical field of PVC film production, and discloses a PVC film production mixer which comprises a mixing tank body, the top of the mixing tank body is communicated with a discharge port, and a discharging mechanism and a driving mechanism are arranged outside the mixing tank body; the discharging mechanism comprises a fixed cover, two fixed seats and a feeding port, the fixed seats are fixedly arranged on the outer wall of the mixing tank body in a sleeving manner, the top end and the bottom end of the fixed cover are rotationally connected with the upper fixed seat and the lower fixed seat through bearings, and when the feeding port in the mixing tank body is aligned with three feeding pipes I, the feeding pipes I are connected with the fixed cover through bearings; when the raw materials are discharged, the different raw materials in the three feeding hoppers can be periodically added into the mixing tank body only by rotating the mixing tank body all the time, step-by-step mixing is achieved, the mixing efficiency can be ensured, and the problem that a large number of raw materials are stacked at the bottom of the mixing tank body before being mixed can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of PVC film production, in particular to a mixer for PVC film production. Background Art

[0002] PVC film, full name Polyvinylchlorid film, is mainly composed of polyvinyl chloride. Other ingredients are added to enhance its heat resistance, toughness, ductility, etc. It is a popular and widely used synthetic material in the world today. The global usage of PVC film ranks second among various synthetic materials. It is applied to all aspects of daily life. Often, the front-end process of producing PVC film is batching. This batching process includes weighing the main ingredients, auxiliary materials and other additives according to the formula quantity, and then mixing them evenly. At this time, a mixer is needed. Common mixers add raw materials at one time when mixing raw materials, which makes it difficult to fully stir the raw materials stacked, affecting the stirring efficiency, and unable to quickly change the proportion of each raw material in the mixer according to processing requirements, and it is not easy to accurately control the mixing ratio. Summary of the invention

[0003] The object of the present invention is to provide a mixer for PVC film production to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a mixer for PVC film production, comprising a mixing tank body, the top of the mixing tank body is connected to a discharge port, and a feeding mechanism and a driving mechanism are arranged outside the mixing tank body; The unloading mechanism comprises a fixed cover, a fixed seat, and a feed port, wherein two fixed seats are provided, and the fixed seats are fixedly sleeved on the outer wall of the mixing tank body, and the top and bottom ends of the fixed cover are rotatably connected to the upper and lower fixed seats through bearings, and a feed pipe 1 is fixedly installed on the inner wall of the fixed cover, and three feed pipes 1 are provided, and are respectively located in the front and left and right sides of the mixing tank body, and the top of the feed pipe 1 is connected with a feed hopper, and an electric discharge regulating valve is installed at the connection between the feed pipe 1 and the feed hopper, and a blocking ring is fixedly installed on the outer wall of one end of the feed pipe 1 facing the mixing tank body, and the blocking ring is rotatably sleeved on the mixing tank body, and three feed pipes 1 are fixedly connected to the same blocking ring, and the feed port is opened on the outer wall of the mixing tank body, and the feed port and the bottom end of the feed pipe 1 are located on the same plane; The driving mechanism drives the mixing tank body to rotate, and a bracket is fixedly installed on the bottom of the fixed cover. Three brackets are provided and distributed in a circular array around the central axis of the mixing tank body.

[0005] Furthermore, a positioning mark is fixedly installed on the outer wall of the mixing tank body, and an infrared position sensor is fixedly installed on the inner wall of the fixed cover. The positioning mark is located above the feed port. Three infrared position sensors are provided, and the three infrared position sensors correspond one-to-one to the three feed pipes.

[0006] Furthermore, the top of the feed hopper is covered with a detachable top cover, and the detachable top cover is fixed to the feed hopper by a positioning buckle.

[0007] Furthermore, a servo motor 2 is fixedly installed on the top of the removable top cover, and a screw rod is fixedly installed on the output end of the servo motor 2. The screw rod extends into the feed hopper, and a screw extrusion plate is provided on the threaded sleeve on the outer wall of the screw rod. A groove is provided at the edge of the extrusion plate, and a limiting guide bar is slidably arranged in the groove, and the limiting guide bar is fixedly installed in the feed hopper.

[0008] Furthermore, the outer wall of the feed hopper is connected to a feed pipe 2, and the top of the feed pipe 2 is higher than the top of the feed hopper.

[0009] Furthermore, the driving mechanism includes a mounting frame, which is fixedly mounted on the bracket, and a servo motor 1 is fixedly mounted on the outer wall of the mounting frame, a rotating shaft 1 is fixedly mounted on the output end of the servo motor 1, a bevel gear 1 is fixedly mounted on the outer wall of the rotating shaft 1, the bevel gear 1 is meshed with a bevel gear 2, and the bevel gear 2 is fixedly mounted on the mixing tank body.

[0010] Furthermore, the bevel gear one is meshed with the bevel gear three, the inner wall of the bevel gear three is fixedly mounted with a rotating shaft two, the rotating shaft two is rotatably connected to the mounting frame through a bearing, the rotating shaft two extends into the mixing tank body, and the rotating shaft two is rotatably connected to the mixing tank body, and the outer wall of the rotating shaft two is fixedly mounted with a spiral stirring blade.

[0011] Furthermore, the spiral stirring blade is larger at the top and smaller at the bottom, a connecting rod is fixedly installed on the outer wall of the spiral stirring blade, a scraper is fixedly installed on one end of the connecting rod away from the spiral stirring blade, and the scraper is attached to the inner wall of the mixing tank.

[0012] Furthermore, a fixed cylinder is fixedly installed on the outer wall of the mixing tank body, and the fixed cylinder is connected with the interior of the mixing tank body, the fixed cylinder is inclined to the lower right, and a feeding tube is slidably arranged inside the fixed cylinder, and a square rod is fixedly installed on the right end of the feeding tube, and the right end of the square rod movably passes through the inner wall of the fixed cylinder, and a spring is fixedly installed on the right end of the feeding tube, and one end of the spring is fixedly connected to the inner wall of the fixed cylinder, and a feeding port is provided on the outer wall of the fixed cylinder, and the feeding port opens downward, and an upper port and a lower port are provided on the outer wall of the feeding tube, the upper port opens upward, the lower port opens downward, and the lower port is aligned with the feeding port, the upper port is close to the left end of the feeding tube, and the lower port and the feeding port are close to the right end of the feeding tube.

[0013] Furthermore, a pull plate is fixedly mounted on the right end of the square rod, the outer diameter of the pull plate is larger than the outer diameter of the square rod, and the inner diameter of the material taking port is consistent with the inner diameter of the lower port.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the feed port on the mixing tank is aligned with the three feed pipes, the raw material is discharged. As long as the mixing tank keeps rotating, the different raw materials in the three feed hoppers can be periodically added into the mixing tank to achieve step-by-step mixing. This can not only ensure the mixing efficiency, but also effectively avoid the problem of a large amount of raw materials being accumulated at the bottom of the mixing tank without being mixed; 2. A fixed cover is provided to connect the fixed seat, and a shielding ring is provided to shield the feed port, that is, when the feed pipe 1 is not aligned with the feed port, the shielding ring shields the feed port to prevent the raw materials in the mixing tank from splashing into the fixed cover. The fixed cover and the fixed seat are provided so that the mixing tank can rotate relative to the feed pipe 1. An electric discharge regulating valve is provided to control the amount of material entering the feed pipe 1 from the feed hopper, so as to balance the feeding rates of the three raw materials; 3. When the bevel gear 1 drives the bevel gear 2 to rotate, the bevel gear 1 can also drive the bevel gear 3 to rotate, thereby driving the rotating shaft 2 to rotate. The rotation of the rotating shaft 2 drives the spiral stirring blade to rotate, and the raw materials in the mixing tank are fully stirred and mixed by using the spiral stirring blade with opposite rotation directions and the mixing tank body; 4. When it is necessary to check the mixing of raw materials in the mixing tank, the mixing tank can be stopped. At this time, the square rod can be pushed to push the material taking pipe into the mixing tank. At this time, the mixed raw materials near the bottom of the mixing tank enter the material taking pipe from the upper opening. Pull the square rod to reset the material taking pipe. The mixed material in the material taking pipe falls out from the lower opening, and then falls out from the material taking port. The mixed material near the bottom of the mixing tank can be taken out, which is convenient for workers to observe whether it meets the production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2For the present invention Figure 1 The structural diagram of the right side view; Figure 3 For the present invention Figure 1 A schematic diagram of the structure in a sectional view on the right side; Figure 4 It is a structural schematic diagram of a front cross-sectional view of a fixed cover and a mixing tank body of the present invention; Figure 5 It is a structural schematic diagram of an exploded view of the blanking mechanism of the present invention; Figure 6 It is a structural schematic diagram of a feed hopper and a feed pipe 1 of the present invention; Figure 7 It is a structural schematic diagram of a side sectional view of the feed hopper of the present invention; Figure 8 It is a structural schematic diagram of a right side cross-sectional view of a mixing tank body of the present invention; Fig. 9 It is a schematic diagram of the structure of the fixed cylinder and the material taking pipe of the present invention; Fig.10 It is a structural schematic diagram of a front cross-sectional view of a fixing cylinder of the present invention.

[0016] In the figure: 1. Mixing tank; 2. Discharge port; 3. Bracket; 4. Discharge mechanism; 401. Feed pipe 1; 402. Feed hopper; 403. Fixed cover; 404. Fixed seat; 405. Electric discharge regulating valve; 406. Shielding ring; 407. Feed port; 5. Driving mechanism; 501. Mounting frame; 502. Servo motor 1; 503. Rotating shaft 1; 504. Bevel gear 1; 505. Bevel gear 2; 6. Infrared position sensor; 7. Fixed Position identification; 8. Removable top cover; 801. Positioning buckle; 9. Feed pipe two; 10. Servo motor two; 11. Screw; 12. Extrusion plate; 13. Limiting guide strip; 14. Rotating shaft two; 15. Bevel gear three; 16. Spiral stirring blade; 17. Connecting rod; 18. Scraper; 19. Fixed cylinder; 1901. Feeding port; 20. Feeding pipe; 2001. Upper port; 2002. Lower port; 21. Square rod; 22. Spring; 23. Pull plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Embodiment 1 See also Figure 1-Figure 7 The present invention provides a technical solution: a mixer for PVC film production, comprising a mixing tank body 1, the top of the mixing tank body 1 is connected with a discharge port 2, and the outside of the mixing tank body 1 is provided with a feeding mechanism 4 and a driving mechanism 5; The unloading mechanism 4 includes a fixed cover 403, a fixed seat 404, and a feed port 407. Two fixed seats 404 are provided. The fixed seat 404 is fixedly sleeved on the outer wall of the mixing tank body 1. The top and bottom ends of the fixed cover 403 are rotatably connected with the upper and lower fixed seats 404 through bearings. A feed pipe 1 401 is fixedly installed on the inner wall of the fixed cover 403. There are three feed pipes 1 401, which are respectively located in front and on the left and right sides of the mixing tank body 1. The top of the feed pipe 1 401 is connected to the mixing tank body 1. A feed hopper 402 is provided, and an electric discharge regulating valve 405 is installed at the connection between the feed pipe 1 401 and the feed hopper 402. A shielding ring 406 is fixedly installed on the outer wall of one end of the feed pipe 1 401 facing the mixing tank body 1. The shielding ring 406 is rotatably sleeved on the mixing tank body 1, and the three feed pipes 1 401 are fixedly connected to the same shielding ring 406. A feed port 407 is provided on the outer wall of the mixing tank body 1, and the feed port 407 and the bottom end of the feed pipe 1 401 are located on the same plane. When the feed port 407 on the mixing tank body 1 is aligned with the three feed pipes 401, the raw material is discharged. As long as the mixing tank body 1 is rotated, the different raw materials in the three feed hoppers 402 can be periodically added into the mixing tank body 1 to achieve step-by-step mixing, which can not only ensure the mixing efficiency, but also effectively avoid the problem that a large amount of raw materials are accumulated at the bottom of the mixing tank body 1 without being mixed. A fixed cover 403 is provided to connect the fixed seat 404, and a shielding ring 406 is provided to connect the feed port 407 to the three feed pipes 401. The material port 407 is shielded, that is, when the feed pipe 401 is not aligned with the feed port 407, the shielding ring 406 shields the feed port 407 to prevent the raw materials in the mixing tank body 1 from splashing into the fixed cover 403. The fixed cover 403 and the fixed seat 404 are arranged so that the mixing tank body 1 can rotate relative to the feed pipe 401. The electric discharge regulating valve 405 is arranged to control the amount of material entering the feed pipe 401 from the feed hopper 402, so as to balance the feeding rate of the three raw materials; The driving mechanism 5 drives the mixing tank body 1 to rotate, and a bracket 3 is fixedly installed at the bottom of the fixed cover 403. There are three brackets 3, which are arranged in a circular array around the central axis of the mixing tank body 1. The brackets 3 support the fixed cover 403, and then support the fixed seat 404, and then support the mixing tank body 1; A positioning mark 7 is fixedly installed on the outer wall of the mixing tank 1, and an infrared position sensor 6 is fixedly installed on the inner wall of the fixed cover 403. The positioning mark 7 is located above the feed port 407. Three infrared position sensors 6 are provided, and the three infrared position sensors 6 correspond to the three feed pipes 401 one by one. The position of the positioning mark 7 is identified by the infrared position sensor 6, and then it is determined whether the feed port 407 is aligned with the feed pipe 401; The top of the feed hopper 402 is covered with a removable top cover 8, and the removable top cover 8 is fixed to the feed hopper 402 by a positioning buckle 801. The removable top cover 8 is provided to cover the top of the feed hopper 402, and the removable top cover 8 is fixed by the positioning buckle 801; A servo motor 10 is fixedly installed on the top of the removable top cover 8, and a screw 11 is fixedly installed on the output end of the servo motor 10. The screw 11 extends into the feed hopper 402. The outer wall of the screw 11 is threadedly sleeved with an extrusion plate 12. A groove is provided at the edge of the extrusion plate 12, and a limit guide bar 13 is slidably provided in the groove. The limit guide bar 13 is fixedly installed in the feed hopper 402. The screw 11 is driven to rotate by the servo motor 10 to move the extrusion plate 12 downward, which is used to push the raw materials so that the raw materials can enter the feed pipe 401 faster. The outer wall of the feed hopper 402 is connected to a feed pipe 29, the top of which is higher than the top of the feed hopper 402. The feed pipe 29 is provided to replenish raw materials into the feed hopper 402 after the removable top cover 8 is closed, thereby avoiding the problem of being unable to perform proportioning due to lack of raw materials.

[0019] Working principle: When in use, according to the raw material ratio, a certain amount of different raw materials are added to the three feed hoppers 402, and then the mixing tank body 1 is driven to rotate through the driving mechanism 5. According to the ratio of the three raw materials, the opening of the three electric discharge regulating valves 405 is adjusted, and then the feeding ratio of different raw materials in the same time is controlled to ensure that in the step-by-step feeding process, the three raw materials with corresponding proportions can be fed to ensure the quality of the mixing. After the feed port 407 is aligned with a feed pipe 401 (the corresponding infrared position sensor 6 detects the position of the positioning mark 7), the raw materials in the feed pipe 401 enter the mixing tank body 1 from the feed port 407, and then after the feed port 407 is aligned with the next feed pipe 401, the raw materials in the next feed pipe 401 enter the mixing tank body 1 from the feed port 407. By feeding in batches and step by step, not only the mixing efficiency can be improved, but also the mixing quality can be improved, and a large amount of unmixed raw materials can be avoided from accumulating at the bottom of the mixing tank body 1.

[0020] Embodiment 2 See also Figure 1-Figure 8 The present invention provides a technical solution: a mixer for PVC film production, comprising a mixing tank body 1, the top of the mixing tank body 1 is connected with a discharge port 2, and the outside of the mixing tank body 1 is provided with a feeding mechanism 4 and a driving mechanism 5; The unloading mechanism 4 includes a fixed cover 403, a fixed seat 404, and a feed port 407. Two fixed seats 404 are provided. The fixed seat 404 is fixedly sleeved on the outer wall of the mixing tank body 1. The top and bottom ends of the fixed cover 403 are rotatably connected with the upper and lower fixed seats 404 through bearings. A feed pipe 1 401 is fixedly installed on the inner wall of the fixed cover 403. There are three feed pipes 1 401, which are respectively located in front and on the left and right sides of the mixing tank body 1. The top of the feed pipe 1 401 is connected to the mixing tank body 1. A feed hopper 402 is provided, and an electric discharge regulating valve 405 is installed at the connection between the feed pipe 1 401 and the feed hopper 402. A shielding ring 406 is fixedly installed on the outer wall of one end of the feed pipe 1 401 facing the mixing tank body 1. The shielding ring 406 is rotatably sleeved on the mixing tank body 1, and the three feed pipes 1 401 are fixedly connected to the same shielding ring 406. A feed port 407 is provided on the outer wall of the mixing tank body 1, and the feed port 407 and the bottom end of the feed pipe 1 401 are located on the same plane. When the feed port 407 on the mixing tank body 1 is aligned with the three feed pipes 401, the raw material is discharged. As long as the mixing tank body 1 is rotated, the different raw materials in the three feed hoppers 402 can be periodically added into the mixing tank body 1 to achieve step-by-step mixing, which can not only ensure the mixing efficiency, but also effectively avoid the problem that a large amount of raw materials are accumulated at the bottom of the mixing tank body 1 without being mixed. A fixed cover 403 is provided to connect the fixed seat 404, and a shielding ring 406 is provided to connect the feed port 407 to the three feed pipes 401. The material port 407 is shielded, that is, when the feed pipe 401 is not aligned with the feed port 407, the shielding ring 406 shields the feed port 407 to prevent the raw materials in the mixing tank body 1 from splashing into the fixed cover 403. The fixed cover 403 and the fixed seat 404 are arranged so that the mixing tank body 1 can rotate relative to the feed pipe 401. The electric discharge regulating valve 405 is arranged to control the amount of material entering the feed pipe 401 from the feed hopper 402, so as to balance the feeding rate of the three raw materials; The driving mechanism 5 drives the mixing tank body 1 to rotate, and a bracket 3 is fixedly installed at the bottom of the fixed cover 403. There are three brackets 3, which are arranged in a circular array around the central axis of the mixing tank body 1. The brackets 3 support the fixed cover 403, and then support the fixed seat 404, and then support the mixing tank body 1; The driving mechanism 5 includes a mounting frame 501, which is fixedly mounted on the bracket 3. A servo motor 1 502 is fixedly mounted on the outer wall of the mounting frame 501. A rotating shaft 1 503 is fixedly mounted on the output end of the servo motor 1 502. A bevel gear 1 504 is fixedly mounted on the outer wall of the rotating shaft 1 503. The bevel gear 1 504 is meshed with a bevel gear 2 505. The bevel gear 2 505 is fixedly mounted on the mixing tank body 1. The servo motor 1 502 drives the rotating shaft 1 503 to rotate, thereby driving the bevel gear 1 504 to rotate. The rotation of the bevel gear 1 504 drives the bevel gear 2 505 to rotate, thereby driving the mixing tank body 1 to rotate, thereby achieving the purpose of driving the mixing tank body 1 to rotate. The bevel gear 1 504 is meshed with the bevel gear 3 15, and the inner wall of the bevel gear 3 15 is fixedly installed with the rotating shaft 2 14, and the rotating shaft 2 14 is rotatably connected to the mounting frame 501 through a bearing, and the rotating shaft 2 14 extends into the mixing tank body 1, and the rotating shaft 2 14 is rotatably connected to the mixing tank body 1, and the outer wall of the rotating shaft 2 14 is fixedly installed with a spiral stirring blade 16, when the bevel gear 1 504 drives the bevel gear 2 505 to rotate, the bevel gear 1 504 can also drive the bevel gear 3 15 to rotate, and then drive the rotating shaft 2 14 to rotate, and the rotation of the rotating shaft 2 14 drives the spiral stirring blade 16 to rotate, and the raw materials in the mixing tank body 1 are fully stirred and mixed by using the spiral stirring blade 16 and the mixing tank body 1 with opposite rotation directions; The spiral stirring blade 16 is larger at the top and smaller at the bottom, so that the spiral stirring blade 16 can fit the shape of the mixing tank body 1 and extend to the bottom of the mixing tank body 1. A connecting rod 17 is fixedly installed on the outer wall of the spiral stirring blade 16, and a scraper 18 is fixedly installed on the end of the connecting rod 17 away from the spiral stirring blade 16. The scraper 18 is attached to the inner wall of the mixing tank body 1. The rotating spiral stirring blade 16 drives the connecting rod 17 to rotate, and then drives the scraper 18 to rotate, so as to scrape off the raw materials attached to the inner wall of the mixing tank body 1.

[0021] Working principle: When in use, turn on the servo motor 1 502 to drive the rotating shaft 1 503 to rotate, and then drive the bevel gear 1 504 to rotate. The rotation of the bevel gear 1 504 drives the bevel gear 2 505 to rotate, and then drives the mixing tank body 1 to rotate. At this time, the bevel gear 1 504 drives the bevel gear 3 15 to rotate, and then drives the rotating shaft 2 14 to rotate. The rotation of the rotating shaft 2 14 drives the spiral stirring blade 16 to rotate. The spiral stirring blade 16 with opposite rotation directions and the mixing tank body 1 are used to fully stir and mix the raw materials in the mixing tank body 1.

[0022] Embodiment 3 See also Figure 1-Figure 10 The present invention provides a technical solution: a mixer for PVC film production, comprising a mixing tank body 1, the top of the mixing tank body 1 is connected with a discharge port 2, and the outside of the mixing tank body 1 is provided with a feeding mechanism 4 and a driving mechanism 5; The unloading mechanism 4 includes a fixed cover 403, a fixed seat 404, and a feed port 407. Two fixed seats 404 are provided. The fixed seat 404 is fixedly sleeved on the outer wall of the mixing tank body 1. The top and bottom ends of the fixed cover 403 are rotatably connected with the upper and lower fixed seats 404 through bearings. A feed pipe 1 401 is fixedly installed on the inner wall of the fixed cover 403. There are three feed pipes 1 401, which are respectively located in front and on the left and right sides of the mixing tank body 1. The top of the feed pipe 1 401 is connected to the mixing tank body 1. A feed hopper 402 is provided, and an electric discharge regulating valve 405 is installed at the connection between the feed pipe 1 401 and the feed hopper 402. A shielding ring 406 is fixedly installed on the outer wall of one end of the feed pipe 1 401 facing the mixing tank body 1. The shielding ring 406 is rotatably sleeved on the mixing tank body 1, and the three feed pipes 1 401 are fixedly connected to the same shielding ring 406. A feed port 407 is provided on the outer wall of the mixing tank body 1, and the feed port 407 and the bottom end of the feed pipe 1 401 are located on the same plane. When the feed port 407 on the mixing tank body 1 is aligned with the three feed pipes 401, the raw material is discharged. As long as the mixing tank body 1 is rotated, the different raw materials in the three feed hoppers 402 can be periodically added into the mixing tank body 1 to achieve step-by-step mixing, which can not only ensure the mixing efficiency, but also effectively avoid the problem that a large amount of raw materials are accumulated at the bottom of the mixing tank body 1 without being mixed. A fixed cover 403 is provided to connect the fixed seat 404, and a shielding ring 406 is provided to connect the feed port 407 to the three feed pipes 401. The material port 407 is shielded, that is, when the feed pipe 401 is not aligned with the feed port 407, the shielding ring 406 shields the feed port 407 to prevent the raw materials in the mixing tank body 1 from splashing into the fixed cover 403. The fixed cover 403 and the fixed seat 404 are arranged so that the mixing tank body 1 can rotate relative to the feed pipe 401. The electric discharge regulating valve 405 is arranged to control the amount of material entering the feed pipe 401 from the feed hopper 402, so as to balance the feeding rate of the three raw materials; A fixed cylinder 19 is fixedly installed on the outer wall of the mixing tank body 1, and the fixed cylinder 19 is connected with the interior of the mixing tank body 1. The fixed cylinder 19 is inclined to the lower right, and a feeding tube 20 is slidably arranged inside the fixed cylinder 19. A square rod 21 is fixedly installed on the right end of the feeding tube 20, and the right end of the square rod 21 movably penetrates the inner wall of the fixed cylinder 19. A spring 22 is fixedly installed on the right end of the feeding tube 20, and one end of the spring 22 is fixedly connected to the inner wall of the fixed cylinder 19. A feeding port 1901 is provided on the outer wall of the fixed cylinder 19, and the feeding port 1901 opens downward. An upper port 2001 and a lower port 2002 are provided on the outer wall of the feeding tube 20, and the upper port 2001 opens upward, and the lower port 2002 opens downward, and the lower port 2002 is connected to the feeding port 19. 01 is aligned, the upper opening 2001 is close to the left end of the material taking pipe 20, and the lower opening 2002 and the material taking port 1901 are close to the right end of the material taking pipe 20. When it is necessary to check the mixing of the raw materials in the mixing tank body 1, the mixing tank body 1 can be stopped, and the square rod 21 is pushed at this time to push the material taking pipe 20 into the mixing tank body 1. At this time, the mixed raw materials near the bottom of the mixing tank body 1 enter the material taking pipe 20 from the upper opening 2001, and the square rod 21 is pulled to drive the material taking pipe 20 to reset. The mixed material in the material taking pipe 20 falls out from the lower opening 2002, and then falls out from the material taking port 1901, and the mixed material near the bottom of the mixing tank body 1 can be taken out, which is convenient for workers to observe whether it meets the production requirements. A spring 22 is provided to pull the material taking pipe 20 to reset; A pull plate 23 is fixedly installed on the right end of the square rod 21. The outer diameter of the pull plate 23 is larger than the outer diameter of the square rod 21. The inner diameter of the material taking port 1901 is consistent with the inner diameter of the lower port 2002. The pull plate 23 makes it easier to pull down the square rod 21.

[0023] Working principle: When in use, if it is necessary to check the mixing status of the raw materials in the mixing tank body 1, the mixing tank body 1 can be stopped, and the square rod 21 can be pushed to push the material taking pipe 20 into the mixing tank body 1. At this time, the mixed raw materials near the bottom of the mixing tank body 1 enter the material taking pipe 20 from the upper opening 2001, and the square rod 21 is pulled to reset the material taking pipe 20. The mixed material in the material taking pipe 20 falls out from the lower opening 2002, and then falls out from the material taking port 1901, and the mixed material near the bottom of the mixing tank body 1 can be taken out, which is convenient for workers to observe whether it meets the production requirements.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A mixer for PVC film production, comprising a mixing tank (1), the top of the mixing tank (1) being connected to a discharge port (2), characterized in that: The outside of the mixing tank (1) is provided with a feeding mechanism (4) and a driving mechanism (5); The unloading mechanism (4) comprises a fixed cover (403), a fixed seat (404), and a feed port (407). Two fixed seats (404) are provided. The fixed seats (404) are fixedly sleeved on the outer wall of the mixing tank body (1). The top and bottom ends of the fixed cover (403) are rotatably connected to the upper and lower fixed seats (404) via bearings. A feed pipe (401) is fixedly installed on the inner wall of the fixed cover (403). Three feed pipes (401) are provided, and are respectively located at the front and left and right sides of the mixing tank body (1). The top of the feed pipe (401) is The end of the mixing tank (1) is connected to a feed hopper (402), an electric discharge regulating valve (405) is installed at the connection point between the feed pipe (401) and the feed hopper (402), a shielding ring (406) is fixedly installed on the outer wall of one end of the feed pipe (401) facing the mixing tank body (1), the shielding ring (406) is rotatably sleeved on the mixing tank body (1), and the three feed pipes (401) are fixedly connected to the same shielding ring (406), the feed port (407) is opened on the outer wall of the mixing tank body (1), and the feed port (407) and the bottom end of the feed pipe (401) are located on the same plane; The driving mechanism (5) drives the mixing tank body (1) to rotate. A bracket (3) is fixedly mounted on the bottom of the fixed cover (403). Three brackets (3) are provided and are distributed in a circular array around the central axis of the mixing tank body (1).

2. A mixer for PVC film production according to claim 1, characterized in that: A positioning mark (7) is fixedly mounted on the outer wall of the mixing tank body (1), and an infrared position sensor (6) is fixedly mounted on the inner wall of the fixed cover (403). The positioning mark (7) is located above the feed port (407). Three infrared position sensors (6) are provided, and the three infrared position sensors (6) correspond one to one with the three feed pipes (401).

3. A mixer for PVC film production according to claim 1, characterized in that: The top of the feed hopper (402) is covered with a detachable top cover (8), and the detachable top cover (8) and the feed hopper (402) are fixed by a positioning buckle (801).

4. A mixer for PVC film production according to claim 3, characterized in that: A servo motor 2 (10) is fixedly mounted on the top of the removable top cover (8), a screw rod (11) is fixedly mounted on the output end of the servo motor 2 (10), the screw rod (11) extends into the feed hopper (402), an extrusion plate (12) is provided on the outer wall of the screw rod (11), a groove is provided at the edge of the extrusion plate (12), and a limit guide bar (13) is slidably arranged in the groove, and the limit guide bar (13) is fixedly mounted in the feed hopper (402).

5. A mixer for PVC film production according to claim 1, characterized in that: The outer wall of the feed hopper (402) is connected to a second feed pipe (9), and the top end of the second feed pipe (9) is higher than the top end of the feed hopper (402).

6. A mixer for PVC film production according to claim 1, characterized in that: The driving mechanism (5) comprises a mounting frame (501), wherein the mounting frame (501) is fixedly mounted on the bracket (3), a servo motor 1 (502) is fixedly mounted on the outer wall of the mounting frame (501), a rotating shaft 1 (503) is fixedly mounted on the output end of the servo motor 1 (502), a bevel gear 1 (504) is fixedly mounted on the outer wall of the rotating shaft 1 (503), the bevel gear 1 (504) is meshed with a bevel gear 2 (505), and the bevel gear 2 (505) is fixedly mounted on the mixing tank body (1).

7. A mixer for PVC film production according to claim 6, characterized in that: The bevel gear 1 (504) is meshed with the bevel gear 3 (15), and a rotating shaft 2 (14) is fixedly mounted on the inner wall of the bevel gear 3 (15). The rotating shaft 2 (14) is rotatably connected to the mounting frame (501) via a bearing. The rotating shaft 2 (14) extends into the mixing tank body (1), and the rotating shaft 2 (14) is rotatably connected to the mixing tank body (1). A spiral stirring blade (16) is fixedly mounted on the outer wall of the rotating shaft 2 (14).

8. A mixer for PVC film production according to claim 7, characterized in that: The spiral stirring blade (16) is larger at the top and smaller at the bottom. A connecting rod (17) is fixedly mounted on the outer wall of the spiral stirring blade (16). A scraper (18) is fixedly mounted on one end of the connecting rod (17) away from the spiral stirring blade (16). The scraper (18) is attached to the inner wall of the mixing tank body (1).

9. A mixer for PVC film production according to claim 1, characterized in that: A fixed cylinder (19) is fixedly mounted on the outer wall of the mixing tank body (1), the fixed cylinder (19) is in communication with the interior of the mixing tank body (1), the fixed cylinder (19) is inclined to the lower right, a material taking pipe (20) is slidably arranged inside the fixed cylinder (19), a square rod (21) is fixedly mounted on the right end of the material taking pipe (20), the right end of the square rod (21) movably penetrates the inner wall of the fixed cylinder (19), a spring (22) is fixedly mounted on the right end of the material taking pipe (20), one end of the spring (22) is fixedly mounted on the inner wall of the fixed cylinder (19), The fixing tube (19) is connected with the fixing tube (19), the outer wall of which is provided with a material taking opening (1901), the opening of which faces downwards; the outer wall of the material taking tube (20) is provided with an upper opening (2001) and a lower opening (2002), the upper opening (2001) faces upwards, the lower opening (2002) faces downwards, and the lower opening (2002) is aligned with the material taking opening (1901), the upper opening (2001) is close to the left end of the material taking tube (20), and the lower opening (2002) and the material taking opening (1901) are close to the right end of the material taking tube (20).

10. A mixer for PVC film production according to claim 9, characterized in that: A pull plate (23) is fixedly mounted on the right end of the square rod (21), the outer diameter of the pull plate (23) is larger than the outer diameter of the square rod (21), and the inner diameter of the material taking port (1901) is consistent with the inner diameter of the lower port (2002).

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