Raw material mixing machine for PVC film production

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) film production equipment, in particular to a raw material mixing machine for PVC film production, which comprises a mixing tank, a lifting cylinder is fixedly mounted in the mixing tank, a screw rod is rotatably mounted in the lifting cylinder, a triangular stirring frame is fixedly mounted on the screw rod, and the triangular stirring frame is rotatably mounted on the lifting cylinder. A triangular stirring rod is rotatably mounted on the triangular stirring frame, a first gear is fixedly mounted at the top end of the triangular stirring rod, an inner meshing gear ring is fixedly mounted in the mixing tank, and a first motor is fixedly mounted at the top end of the mixing tank; the three triangular stirring rods can rotate when rotating around the axis of the screw rod, the stirring and mixing efficiency can be greatly improved, and when the screw rod rotates clockwise, the screw rod continuously lifts raw materials at the bottom to the top end to participate in stirring in the stirring process, so that the stirring efficiency is greatly improved. And the efficient stirring effect that all the raw materials can be fully mixed is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC film production equipment, in particular to a raw material mixer for PVC film production. Background Art

[0002] During the production of PVC film, various raw materials such as PVC resin, plasticizer, stabilizer, lubricant, etc. need to be fully mixed so that they are evenly distributed at the micro level, thereby ensuring that the produced PVC film has consistency in physical properties, chemical properties and appearance. In actual applications, the raw material mixer usually requires the following technologies:

[0003] 1. Stirring device: such as stirring blades and stirring shaft, used to stir and mix the raw materials.

[0004] 2. Drive motor: provides power to enable the stirring device to operate.

[0005] 3. Quantitative feeding device: such as screw feeder, metering pump, etc., to ensure that various raw materials are fed in precise proportions.

[0006] Existing Chinese patent: A mixer for PVC film production, patent number: CN210679235U, comprising a mixing tank, wherein the top outer wall of the mixing tank is provided with a motor frame, and the top inner wall of the motor frame is provided with a No. 2 motor, the output shaft of the No. 2 motor is provided with a rotating shaft, and the outer wall of the rotating shaft is sleeved with a sieve plate, and the outer wall of the rotating shaft is located below the sieve plate, and a stirring rod is fixed to the outer wall of the rotating shaft at equal distances by a key, the outer wall of the mixing tank near the sieve plate is provided with a through hole, and the inner wall of the through hole is fixed with a discharge door by a hinge, the outer wall of one side of the mixing tank is provided with a support plate, and the top outer wall of the support plate is provided with two support rods, and the top outer walls of the two support rods are provided with a common feeding assembly, and the feeding assembly includes a feeding pipe. The utility model is provided with a sieve plate, and the screen is fixed on the rotating shaft. When the raw materials are discharged, the No. 2 motor drives the sieve plate to rotate through the rotating shaft, thereby screening the raw materials, thereby improving the practical value of the mixer.

[0007] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems: the above-mentioned raw material mixer uses a separate stirring rod driven by a motor to mix the raw materials. The stirring rod can only rotate in one direction following the motor, and the stirring efficiency of the raw materials is low. The mixing time is long, and the bottom of the mixing tank is designed to be conical for the convenience of unloading. The raw materials located in the cone are far away from the stirring rod and cannot participate in the mixing of the raw materials. Therefore, the above-mentioned raw material mixer not only has low mixing efficiency but also insufficient mixing of the raw materials. Utility Model Content

[0008] (1) Technical problems solved

[0009] In view of the deficiencies in the prior art, the utility model provides a raw material mixer for PVC film production, which solves the technical problems that the above-mentioned raw material mixer uses a separate stirring rod driven by a motor to mix the raw materials. The stirring rod can only rotate in one direction following the motor, resulting in low stirring efficiency for the raw materials and a long time required for mixing. In addition, the bottom of the mixing tank is designed to be conical for easy unloading. The raw materials located in the cone are far away from the stirring rod and cannot participate in the mixing of the raw materials. Therefore, the above-mentioned raw material mixer not only has low mixing efficiency but also has insufficient mixing of the raw materials.

[0010] (2) Technical solution

[0011] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0012] A raw material mixer for PVC film production includes a mixing tank, a lifting cylinder is fixedly installed inside the mixing tank, a spiral rod is rotatably installed inside the lifting cylinder, a triangular stirring frame is fixedly installed on the spiral rod, a triangular stirring rod is rotatably installed on the triangular stirring frame, a first gear is fixedly installed on the top of the triangular stirring rod, an internal meshing gear ring is fixedly installed inside the mixing tank, and a first motor is fixedly installed on the top of the mixing tank; the triangular stirring rod is meshed with the internal meshing gear ring, and the first motor drives the spiral rod to rotate through a bevel gear set, a feed pipe is fixedly installed on the mixing tank, a feed plate is slidably installed on the feed pipe, a spring is installed on the side end of the feed plate, a sliding guide rail is fixedly installed on the top of the mixing tank, and a triangular plate is slidably installed on the sliding guide rail.

[0013] Preferably, a second motor is fixedly mounted on the top end of the triangle plate, and a second gear is fixedly mounted on the rotating shaft of the second motor.

[0014] Preferably, a rack is fixedly mounted on the top end of the sliding guide rail; the rack is meshed with the second gear.

[0015] (3) Beneficial effects

[0016] 1. During the sliding of the triangular plate, the protrusions on the side of the triangular plate will squeeze the feed plate, thereby pushing the feed plate to overcome the elastic force of the spring and slide. In the process of sliding the feed plate toward the spring end, it will drive the opening of the feed pipe so that the inside of the feed pipe can be connected to the feeding mechanism. The raw materials inside the feeding mechanism will slide along the feed pipe into the mixing tank. When the top of the triangular plate contacts the feed plate, the opening of the feed pipe is the largest. The faster the raw materials enter, the longer the contact time between the triangular plate and the feed plate, and the more raw materials will enter the mixing tank. When the required amount of a raw material is placed, the second motor will continue to drive the triangular plate to slide and push the next feed plate. When the triangular plate leaves the previous feed plate, the feed plate will also be reset under the action of the elastic force of the spring to block the opening of the feed pipe. The second motor is connected to the PLC control system, and will intelligently drive the triangular plate to slide according to the required proportion of each raw material, thereby achieving the effect of accurately controlling the proportion of each raw material inside the mixing tank.

[0017] 2. When the first motor is started, the screw rod is driven to rotate clockwise through the bevel gear. The screw rod is fixedly connected to the triangular stirring frame, so the triangular stirring frame will rotate with the screw rod. The rotation of the triangular stirring frame will simultaneously drive the three triangular stirring rods to rotate about the axis of the screw rod. Since the first gear at the top of the triangular stirring rod is meshed with the internal gear ring, the first gear will rotate under the drive of the rotation of the triangular stirring rod, thereby driving the triangular stirring rod to rotate about itself as the axis, and when the screw rod rotates clockwise, the raw materials that fall on the bottom of the mixing tank will be lifted from the bottom of the lifting cylinder to the top of the lifting cylinder. The raw materials lifted to the top of the lifting cylinder will fall between the mixing tank and the lifting cylinder under the action of gravity. The three triangular stirring rods stir, and during the stirring process, the screw rod continuously lifts the raw materials at the bottom to the top to participate in stirring, so that all raw materials can be stirred evenly, achieving the effect of efficient stirring that all raw materials can be fully mixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 This is the first motor structure diagram of the utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of a mixing tank of the present utility model;

[0021] Figure 3 This is a structural diagram of the triangular stirring frame of the utility model;

[0022] Figure 4This is a cross-sectional structural diagram of the lifting cylinder of the present utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the feed pipe of the present utility model.

[0024] Legend: 1. Mixing tank; 2. Screw rod; 3. Triangular stirring frame; 4. Triangular stirring rod; 5. Internal meshing gear ring; 6. First gear; 7. Lifting cylinder; 8. First motor; 9. Feed pipe; 11. Sliding guide rail; 12. Feed plate; 13. Spring; 14. Triangular plate; 15. Second motor; 16. Second gear; 17. Rack. DETAILED DESCRIPTION

[0025] The embodiment of the present application provides a raw material mixer for PVC film production, which effectively solves the above-mentioned raw material mixer. The raw materials are mixed by a separate stirring rod driven by a motor. The stirring rod can only rotate in one direction following the motor, which has low stirring efficiency for the raw materials and takes a long time to mix. In addition, the bottom of the mixing tank is designed to be conical for the convenience of unloading. The raw materials in the cone are far away from the stirring rod and cannot participate in the mixing of the raw materials. Therefore, the above-mentioned raw material mixer has not only low mixing efficiency but also insufficient mixing of the raw materials. In the process of sliding the triangular plate, the protrusions on the side of the triangular plate will hit the feed plate. The material is squeezed and pushed to overcome the elastic force of the spring to slide. In the process of sliding toward the spring end, the feed plate will drive the opening of the feed pipe so that the inside of the feed pipe can be connected with the feeding mechanism. The raw materials inside the feeding mechanism will slide along the feed pipe into the mixing tank. When the top of the triangular plate contacts the feed plate, the opening of the feed pipe is the largest. The faster the raw materials enter, the longer the triangular plate contacts the feed plate, and the more raw materials will enter the mixing tank. When the required amount of a raw material is placed, the second motor will continue to drive the triangular plate to slide and push the next feed plate. When the triangular plate leaves the previous feed plate, the feed plate will be pushed to the next feed plate. When the material plate is moved, the feed plate will also be reset to block the opening of the feed pipe under the elastic force of the spring. The second motor is connected to the PLC control system, and will intelligently drive the triangular plate to slide according to the required proportion of each raw material, so as to achieve the effect of accurately controlling the proportion of each raw material inside the mixing tank. The first motor starts and drives the screw rod to rotate clockwise through the bevel gear. The screw rod is fixedly connected to the triangular stirring frame, so the triangular stirring frame will rotate with the screw rod. The rotation of the triangular stirring frame will simultaneously drive the three triangular stirring rods to rotate around the axis of the screw rod. Since the first gear at the top of the triangular stirring rod is engaged with the internal gear The rings are meshed, so the first gear will rotate under the drive of the triangular stirring rod, and then drive the triangular stirring rod to rotate with itself as the axis, and when the spiral rod rotates clockwise, the raw materials that fall on the bottom of the mixing tank will be lifted from the bottom of the lifting cylinder to the top of the lifting cylinder. The raw materials lifted to the top of the lifting cylinder will fall between the mixing tank and the lifting cylinder under the action of gravity. The three triangular stirring rods stir, and during the stirring process, the spiral rod continuously lifts the raw materials at the bottom to the top to participate in stirring, so it can ensure that all raw materials are stirred evenly, achieving the effect of efficient stirring that all raw materials can be fully mixed.

[0026] Example

[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the technical solution in the embodiment of the present application is to effectively solve the above-mentioned raw material mixer, in which a separate stirring rod is driven by a motor to mix the raw materials. The stirring rod can only rotate in one direction following the motor, which has low stirring efficiency for the raw materials and a long time required for mixing. In addition, the bottom of the mixing tank is designed to be conical for easy unloading. The raw materials in the cone are far away from the stirring rod and cannot participate in the mixing of the raw materials. Therefore, the above-mentioned raw material mixer not only has low mixing efficiency but also has insufficient mixing of the raw materials. The overall idea is as follows:

[0028] In response to the problems existing in the prior art, the utility model provides a raw material mixer for PVC film production, including a mixing tank 1, a lifting cylinder 7 is fixedly installed inside the mixing tank 1, a screw rod 2 is rotatably installed inside the lifting cylinder 7, a triangular stirring frame 3 is fixedly installed on the screw rod 2, and a triangular stirring rod 4 is rotatably installed on the triangular stirring frame 3.

[0029] A first gear 6 is fixedly installed on the top of the triangular stirring rod 4, an internal meshing gear ring 5 is fixedly installed inside the mixing tank 1, and a first motor 8 is fixedly installed on the top of the mixing tank 1; the triangular stirring rod 4 is meshed with the internal meshing gear ring 5, and the first motor 8 drives the screw rod 2 to rotate through a bevel gear set, and a feed pipe 9 is fixedly installed on the mixing tank 1, and a feed plate 12 is slidably installed on the feed pipe 9.

[0030] A spring 13 is installed on the side end of the feed plate 12, a sliding guide rail 11 is fixedly installed on the top of the mixing tank 1, a triangular plate 14 is slidably installed on the sliding guide rail 11, a second motor 15 is fixedly installed on the top of the triangular plate 14, a second gear 16 is fixedly installed on the rotating shaft of the second motor 15, and a rack 17 is fixedly installed on the top of the sliding guide rail 11; the rack 17 and the second gear 16 are meshed.

[0031] Working principle:

[0032] The first step is to connect the first motor 8 and the second motor 15 to the PLC control system during installation. The second motor 15 is a stepping motor that can accurately control the rotation angle, direction and number of turns. The five openings on the feed tube 9 are connected to the feeding mechanism of different raw materials. When in use, the second motor 15 starts to drive the second gear 16 to rotate counterclockwise. Since the second gear 16 is engaged with the rack 17, the counterclockwise rotation of the second gear 16 will drive the triangular plate 14 to slide on the sliding guide rail 11. In the process of sliding of the triangular plate 14, the protrusion on the side of the triangular plate 14 will squeeze the feed plate 12, thereby pushing the feed plate 12 to overcome the elastic force of the spring 13 and slide. In the process of sliding toward the end of the spring 13, the feed plate 12 will drive the opening of the feed tube 9, so that the inside of the feed tube 9 can be in contact with The feeding mechanism is connected, and the raw materials inside the feeding mechanism will slide along the feeding pipe 9 into the mixing tank 1. When the top of the triangular plate 14 contacts the feeding plate 12, the opening of the feeding pipe 9 is the largest. The faster the raw materials enter, the longer the triangular plate 14 contacts the feeding plate 12, and the more corresponding raw materials will enter the mixing tank 1. When the required amount of a raw material is placed, the second motor 15 will continue to drive the triangular plate 14 to slide and push the next feeding plate 12. When the triangular plate 14 leaves the previous feeding plate 12, the feeding plate 12 will also be reset to block the opening of the feeding pipe 9 under the elastic force of the spring 13. The second motor 15 is connected to the PLC control system, and will intelligently drive the triangular plate 14 to slide according to the required proportion of each raw material, so as to accurately control the proportion of each raw material inside the mixing tank 1.

[0033] In the second step, after all kinds of raw materials have entered the mixing tank 1, the first motor 8 is started to drive the screw rod 2 to rotate clockwise through the bevel gear. The screw rod 2 is fixedly connected to the triangular stirring frame 3, so the triangular stirring frame 3 will rotate with the screw rod 2. The rotation of the triangular stirring frame 3 will simultaneously drive the three triangular stirring rods 4 to rotate around the axis of the screw rod 2. Since the first gear 6 at the top of the triangular stirring rod 4 is engaged with the internal meshing gear ring 5, the first gear 6 will rotate under the drive of the rotation of the triangular stirring rod 4, and then drive the triangular stirring rod 4 to rotate with itself as the center. Rotation of the axis. To sum up, the three triangular stirring rods 4 will also rotate when rotating around the axis of the spiral rod 2, which can greatly improve the efficiency of stirring and mixing, and when the spiral rod 2 rotates clockwise, the raw materials that fall on the bottom of the mixing tank 1 will be lifted from the bottom of the lifting cylinder 7 to the top of the lifting cylinder 7. The raw materials lifted to the top of the lifting cylinder 7 will fall between the mixing tank 1 and the lifting cylinder 7 under the action of gravity. The three triangular stirring rods 4 stir, and during the stirring process, the spiral rod 2 continuously lifts the raw materials at the bottom to the top to participate in stirring, thereby ensuring that all raw materials are stirred evenly.

[0034] Finally, it should be noted that the above embodiments are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A raw material mixer for PVC film production, comprising a mixing tank (1), characterized in that: A lifting cylinder (7) is fixedly installed inside the mixing tank (1), a screw rod (2) is rotatably installed inside the lifting cylinder (7), a triangular stirring frame (3) is fixedly installed on the screw rod (2), a triangular stirring rod (4) is rotatably installed on the triangular stirring frame (3), a first gear (6) is fixedly installed on the top of the triangular stirring rod (4), an internal meshing gear ring (5) is fixedly installed inside the mixing tank (1), and a first motor (8) is fixedly installed on the top of the mixing tank (1); The triangular stirring rod (4) is meshed with the internal meshing gear ring (5), and the first motor (8) drives the screw rod (2) to rotate through the bevel gear set.

2. A raw material mixer for PVC film production according to claim 1, characterized in that: A feed pipe (9) is fixedly mounted on the mixing tank (1), and a feed plate (12) is slidably mounted on the feed pipe (9).

3. A raw material mixer for PVC film production according to claim 2, characterized in that: A spring (13) is installed on the side end of the feed plate (12).

4. A raw material mixer for PVC film production according to claim 1, characterized in that: A sliding guide rail (11) is fixedly mounted on the top end of the mixing tank (1), and a triangular plate (14) is slidably mounted on the sliding guide rail (11).

5. A raw material mixer for PVC film production according to claim 4, characterized in that: A second motor (15) is fixedly mounted on the top end of the triangular plate (14), and a second gear (16) is fixedly mounted on the rotating shaft of the second motor (15).

6. A raw material mixer for PVC film production according to claim 4, characterized in that: A rack (17) is fixedly mounted on the top end of the sliding guide rail (11); The rack (17) and the second gear (16) are meshed.

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