Raw material supply device of PVC pipe plastic extruding machine

Abstract

The invention relates to the field of PVC pipe manufacturing, in particular to a raw material feeding device of a PVC pipe plastic extruding machine, which comprises a conveying header pipe, one end of the conveying header pipe is used for feeding raw materials, the other end of the conveying header pipe is provided with a distributor, the distributor is provided with a plurality of discharging pipes, the discharging pipes are used for discharging products, and the discharging pipes are used for discharging the products. Each discharging pipe is correspondingly provided with a material storage tank, the material storage tanks are connected with the discharging pipes, and the material storage tanks are used for feeding raw materials to the plastic extruding machine; a screw rod is arranged in the distributor, the screw rod is rotationally connected into the distributor, the screw rod is driven by a motor, the screw rod is arranged in the length direction of the distributor, and the screw rod is used for driving raw materials to move along the distributor; a stirring blade is also arranged in the material storage tank, is rotationally connected with the material storage tank and is driven by the motor. The distributor can feed materials to a plurality of plastic extruding machines at the same time, and meanwhile, the raw materials are conveyed through the screw rod, so that the feeding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of PVC pipe manufacturing, in particular to a raw material feeding device of a PVC pipe extruder. Background Art

[0002] PVC refers to polyvinyl chloride plastic, which is one of the commonly used thermoplastic plastics. During production, it is usually necessary to add plasticizers, stabilizers, fillers, etc. to polyvinyl chloride to improve its performance, thereby forming polyvinyl chloride plastic. Polyethylene plastic is then processed into various products. Many pipes are made of polyethylene plastic.

[0003] Under the existing technology, PVC pipes are usually made by extrusion molding using an extruder, and the materials of the extruder are usually fed into the extruder through a pipe. However, with this feeding method, the overall feeding efficiency is low, and the raw materials fed are prone to unevenness, resulting in low production efficiency and production quality. Summary of the invention

[0004] In order to solve the problem that PVC pipes are usually made by extrusion molding using an extruder in the prior art, the materials of the extruder are usually fed into the extruder through a pipe. However, with this feeding method, the overall feeding efficiency is low, and the raw materials fed are prone to unevenness, resulting in low production efficiency and production quality. This application provides a raw material feeding device for a PVC pipe extruder, and the specific solution is as follows.

[0005] A raw material feeding device for a PVC pipe extruder, characterized in that it comprises a conveying main pipe, one end of which is used to feed raw materials, and the other end of which is provided with a distributor, and the distributor is provided with a plurality of discharge pipes, and the discharge pipes are used to discharge products, and each of the discharge pipes is correspondingly provided with a storage tank, and the storage tank is connected to the discharge pipe, and the storage tank is used to feed raw materials into the extruder; The distributor is provided with a screw rod, the screw rod is rotatably connected to the distributor, the screw rod is driven by a motor, the screw rod is arranged along the length direction of the distributor, and the screw rod is used to drive the raw material to move along the distributor; A stirring blade is also arranged in the material storage tank, the stirring blade is rotatably connected to the material storage tank, and the stirring blade is driven by a motor.

[0006] By adopting the above technical scheme, raw materials are introduced into one end of the conveying main pipe, and a distributor is set at the other end. The multiple discharge pipes on the distributor are respectively connected to the storage tanks to ensure that the raw materials are evenly distributed to each storage tank, and the products can be evenly and effectively delivered to multiple extruders for production. The spiral rod in the distributor is driven by a motor and is arranged along the length direction of the distributor, which effectively pushes the raw materials to move along the distributor, ensures the smooth flow of the raw materials in the distributor, reduces blockage, and improves the feeding efficiency. The stirring blades set in the storage tank are also driven by the motor, which can prevent the raw materials from agglomerating or precipitating in the storage tank and maintain the fluidity of the raw materials, so that the raw materials can be processed and produced after being sent to the extruder, further improving the production efficiency.

[0007] Optionally, a heating tank is also provided next to the storage tank, one end of the heating tank is connected to the storage tank, and the other end of the heating tank is used to be connected to the extruder.

[0008] By adopting the above technical solution, a heating tank is set on the storage tank, which can heat the raw materials before being sent to the extruder, effectively increase the temperature of the raw materials, and ensure that the raw materials reach a suitable processing temperature before entering the extruder, thereby improving the quality and efficiency of extrusion molding.

[0009] Optionally, a weighing platform is provided under the storage tank, the storage tank is placed on the weighing platform, and the weighing platform is used to weigh the weight of the storage tank.

[0010] By adopting the above technical solution, the weighing platform arranged under the storage tank can monitor the weight of the raw materials in the storage tank in real time, ensure the accuracy and stability of the raw material supply, and avoid the situation where the various extruders work out of sync due to too much or too little raw material.

[0011] Optionally, a discharge valve is provided corresponding to each discharge pipe on the distributor, and the discharge valve is electrically connected to the weighing device corresponding to the discharge pipe. When the weight obtained by the weighing platform is greater than or equal to a set value, the discharge valve closes the passage between the discharge pipe and the distributor.

[0012] By adopting the above technical solution, a discharge valve electrically connected to the weighing device is set. When the weight of the raw materials in the storage tank reaches or exceeds the preset value, the discharge valve is automatically closed, which can reduce the situation where too much raw material enters the storage tank. After the passage is blocked, the raw materials can be passed into different storage tanks, thereby improving the efficiency of raw material injection into different storage tanks, thereby improving the feeding effect.

[0013] Optionally, both ends of the divider are inclined, the middle of the divider is lower than the two ends of the divider, the main conveying pipe is connected to the middle of the divider, and a discharge pipe and a storage tank are provided in the middle of the divider.

[0014] By adopting the above technical solution, the divider is set at an angle and the middle part is set lower than the two ends. The raw materials will first fill the storage tank in the middle, and then move upward one by one to fill each storage tank in turn, thereby further improving the accuracy of material distribution and the efficiency of feeding.

[0015] Optionally, a mixing bowl is also provided on the divider, and the mixing bowl is fixedly connected to the divider, the mouth of the mixing bowl is connected to the interior of the divider, and the bottom of the mixing bowl is connected to the corresponding discharge pipe. An agitator is provided in the divider corresponding to the mixing bowl, and the agitator is rotatably connected to the divider, and the agitator rotates in the mixing bowl.

[0016] By adopting the above technical solution, the setting of the mixing bowl and the agitator can effectively improve the mixing uniformity of the materials in the distributor, ensuring the consistent quality of the products discharged from each discharge pipe. At the same time, the rotation of the agitator can prevent the materials from agglomerating or clogging in the distributor, ensuring the smooth and stable feeding process.

[0017] Optionally, the agitator also includes a stirring rod and a stirring blade, the stirring blade is fixedly connected to the stirring rod, the stirring rod is driven by a motor, the angle between the stirring rod and the distributor is less than 90 degrees, and the stirring blade and the spiral rod do not interfere with each other.

[0018] By adopting the above technical solution and setting an inclined agitator, the raw materials to be sent into the storage tank can be stirred during the stirring process to make the raw materials mixed more evenly, and the raw materials can be guided toward the mixing bowl during the stirring process, so that the raw materials can normally enter the mixing bowl for distribution during the transportation process.

[0019] Optionally, the distributor is provided with a mixing bowl corresponding to each discharge pipe, and the mixing bowl is provided with an agitator.

[0020] By adopting the above technical solution, a mixing bowl is provided at each discharge pipe, so that the raw materials at each position can be evenly mixed, and the raw materials can be guided to the mixing bowl at each position, thereby reducing the situation where the raw materials cannot enter the mixing bowl as the spiral rod moves.

[0021] Optionally, a heating component is further provided in the distributor, and the heating component is arranged along the distributor.

[0022] By adopting the above technical solution and setting a heating component, the raw materials can be preheated so that the raw materials can be raised to the temperature required for extrusion more quickly after entering the heating tank. The mixing rate of the raw materials can also be increased by raising the temperature.

[0023] Optionally, it also includes a reflux tank, a plurality of reflux pipes are arranged between the reflux tank and the distributor, one end of the reflux pipe is connected to the corresponding mixing bowl, the other end of the reflux pipe is connected to the reflux pipe, and a thermal expansion and contraction part is arranged at the connection between the reflux pipe and the mixing bowl, and the thermal expansion and contraction part blocks the reflux pipe when it expands due to heat. A reuse pipe is also arranged between the reflux tank and the main delivery pipe, one end of the reuse pipe is connected to the reflux tank, and the other end of the reuse pipe is used to connect to the main delivery pipe.

[0024] By adopting the above technical scheme, setting up a reflux tank and a reflux pipeline, the raw materials that have not been fully preheated can be returned to the reflux tank to wait for reuse, reducing the impact of raw materials with insufficient heat on hormones. At the same time, the flow direction of the product can be controlled by the temperature of the product. After stopping production, the raw materials in the distributor are passed into the reflux tank to wait for the next processing.

[0025] In summary, this application has at least the following beneficial effects: 1. The present application solves the problem that under the prior art, PVC pipes are usually made by extrusion molding using an extruder, and the materials of the extruder are usually fed into the extruder through a pipe. However, with this feeding method, the overall feeding efficiency is low, and the fed raw materials are prone to unevenness, resulting in low production efficiency and production quality. The present application provides a material distributor, which can deliver products to multiple storage tanks at the same time, thereby increasing the feeding efficiency, enabling production through multiple extruders at the same time, and also improving production efficiency.

[0026] 2. The present application also provides a mixing bowl and a stirrer to stir the raw materials in the mixing bowl to mix the raw materials evenly, so that the raw materials can enter the storage tank for storage after being completely mixed, thereby improving the quality of extrusion molding.

[0027] 3. The present application also provides a heating component and a reflux tank to heat the raw materials in the distributor. When in the heating state, the raw materials will not flow into the reflux tank. When the heating is stopped or the raw materials are not heated to the required temperature, the raw materials will flow into the reflux tank and wait for use in the next extrusion, thereby reducing the situation where unpreheated raw materials enter the extruder. The processing can also be controlled by heating, and the raw materials in the distributor can be discharged again after the heating is stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the first embodiment.

[0029] Figure 2 It is a cross-sectional view of the first embodiment.

[0030] Figure 3 It is a stereogram of the second embodiment.

[0031] Figure 4It is a stereogram of the second embodiment.

[0032] Description of reference numerals: 1. Transport main pipe; 2. Distributor; 21. Discharge pipe; 22. Screw rod; 23. Discharge valve; 24. Mixing bowl; 241. Agitator; 3. Storage tank; 31. Stirring blade; 32. Weighing platform; 4. Heating tank; 5. Reflux tank; 51. Reflux pipeline; 512. Thermal expansion and contraction parts; 52. Reusable pipe. DETAILED DESCRIPTION

[0033] The present application is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0034] Embodiment 1 A raw material feeding device for a PVC pipe extruder, such as Figure 1 and Figure 2 As shown, it includes a conveying main pipe 1, one end of which is used to pass raw materials, and the other end of the conveying main pipe 1 is provided with a distributor 2, on which a plurality of discharge pipes 21 are provided, and the discharge pipes 21 are used to discharge products, and each discharge pipe 21 is correspondingly provided with a storage tank 3, which is connected to the discharge pipe 21, and the storage tank 3 is used to feed raw materials into the extruder. In specific implementation, the conveying main pipe 1 feeds raw materials through equipment such as a water pump, and after feeding, the raw materials move along the distributor 2 and are transported to each storage tank 3 through the discharge pipe 21, and then the storage tank 3 feeds the raw materials into the extruder to form products.

[0035] like Figure 1 and Figure 2 As shown, a screw rod 22 is provided in the distributor 2, the screw rod 22 is rotatably connected in the distributor 2, the screw rod 22 is driven by a motor, the screw rod 22 is arranged along the length direction of the distributor 2, and the screw rod 22 is used to drive the raw material to move along the distributor 2. In specific implementation, a motor and a screw rod 22 are respectively provided at both ends of the distributor 2, the rotating shaft of the motor is fixedly connected to the corresponding screw rod 22, the motor can drive the screw to rotate in the distributor 2, and the raw material can be transported in the distributor 2.

[0036] like Figure 1 and Figure 2 As shown, a stirring blade 31 is provided in the storage tank 3, and the stirring blade 31 is rotatably connected to the storage tank 3, and the stirring blade 31 is driven by a motor. In specific implementation, when the raw materials are transported to the storage tank 3 but not produced, sedimentation and the like are likely to occur, resulting in uneven mixing of the raw materials in the storage tank 3, which will affect subsequent extrusion production.

[0037] like Figure 1 and Figure 2As shown, a heating tank 4 is also provided next to the storage tank 3, one end of the heating tank 4 is connected to the storage tank 3, and the other end of the heating tank 4 is used to connect to the extruder. In specific implementation, the heating tank 4 directly uses electric heating to heat the raw materials, and after the raw materials are heated to a temperature that meets the extrusion requirements, the product can be passed into the extruder for production.

[0038] like Figure 1 and Figure 2 As shown, a weighing platform 32 is provided under the material storage tank 3, and the material storage tank 3 is arranged on the weighing platform 32, and the weighing platform 32 is used to weigh the weight of the material storage tank 3. In specific implementation, the weighing platform 32 can weigh the weight of the raw materials in the material storage tank 3.

[0039] like Figure 1 and Figure 2 As shown, a discharge valve 23 is provided on the distributor 2 corresponding to each discharge pipe 21, and the discharge valve 23 is electrically connected to the weighing device corresponding to the discharge pipe 21. When the weight obtained by the weighing platform 32 is greater than or equal to the set value, the discharge valve 23 closes the passage between the discharge pipe 21 and the distributor 2. In specific implementation, the weight of the raw materials in each storage tank 3 can be judged through the discharge valve 23 and the weighing device. When the weight of the raw materials meets the production requirements, the discharge valve 23 can be closed to facilitate the filling of other storage tanks 3.

[0040] like Figure 1 and Figure 2 As shown, both ends of the distributor 2 are inclined, the middle of the distributor 2 is lower than the two ends of the distributor 2, the main conveying pipe 1 is connected to the middle of the distributor 2, and a discharge pipe 21 and a storage tank 3 are provided in the middle of the distributor 2. In specific implementation, the raw material will move upward from the middle of the distributor 2 to both sides, and when the storage tank 3 at the bottom reaches the state of closing the discharge valve 23, the raw material will gradually move upward, thereby discharging the remaining unfilled storage tanks 3, further improving the feeding efficiency.

[0041] like Figure 1 and Figure 2 As shown, a mixing bowl 24 is also provided on the distributor 2, and the mixing bowl 24 is fixedly connected to the distributor 2, the mouth of the mixing bowl 24 is connected to the interior of the distributor 2, and the bottom of the mixing bowl 24 is connected to the corresponding discharge pipe 21, and an agitator 241 is provided corresponding to the mixing bowl 24 in the distributor 2, and the agitator 241 is rotatably connected to the distributor 2, and the agitator 241 rotates in the mixing bowl 24.

[0042] like Figure 1 and Figure 2As shown, the agitator 241 also includes a stirring rod and a stirring blade 31. The stirring blade 31 is fixedly connected to the stirring rod. The stirring rod is driven by a motor. The angle between the stirring rod and the distributor 2 is less than 90 degrees. The stirring blade 31 and the spiral rod 22 do not interfere with each other. In specific implementation, the stirring rod can not only stir and mix the raw materials in the mixing bowl 24, but also guide the raw materials in the distributor 2 to the mixing bowl 24, thereby reducing the situation where the raw materials in the distributor 2 cannot enter the mixing bowl 24, and further improving the feeding efficiency.

[0043] like Figure 1 and Figure 2 As shown, the distributor 2 is provided with a mixing bowl 24 corresponding to each discharge pipe 21, and a stirrer 241 is provided in each mixing bowl 24. In specific implementation, the mixing bowl 24 can stir and mix the pigment in each mixing bowl 24, so that the raw materials in each storage tank 3 can be fully mixed before being introduced.

[0044] Working principle: the distributor 2 can stir and mix the raw materials, and transport the materials to different storage tanks 3. The distributor 2 can feed the raw materials into different storage tanks 3, and stir and mix the raw materials again before extrusion to further improve the extrusion quality.

[0045] Embodiment 2 like Figure 3 and Figure 4 As shown, the difference between the second embodiment and the first embodiment is that a heating component is further provided in the distributor 2, and the heating component is arranged along the distributor 2. In specific implementation, the heating component adopts a plurality of electric heating copper tubes, and the electric heating copper tubes are arranged along the length direction of the distributor 2. The electric heating copper tubes can heat the raw materials in the distributor 2, thereby improving the sufficient mixing of the raw materials.

[0046] like Figure 3 and Figure 4As shown, it also includes a reflux tank 5, and a plurality of reflux pipes 51 are arranged between the reflux tank 5 and the distributor 2. One end of the reflux pipe 51 is connected to the corresponding mixing bowl 24, and the other end of the reflux pipe 51 is connected to the reflux pipe. A thermal expansion and contraction component 512 is arranged at the connection between the reflux pipe 51 and the mixing bowl 24. The thermal expansion and contraction component 512 blocks the reflux pipe 51 when it expands due to heat. A reuse pipe 52 is also arranged between the reflux tank 5 and the conveying main pipe 1. One end of the reuse pipe 52 is connected to the reflux tank 5, and the other end of the reuse pipe 52 is used to be connected to the conveying main pipe 1. In specific implementation, when working for the first time, it is difficult for the heating component to heat the raw material to a certain temperature. Therefore, it is difficult for the thermal expansion and contraction part 512 to expand and block the raw material. A part of the raw material will flow back along the reflux pipe 51 to the reflux tank 5 and then enter the distributor 2 for secondary heating until the temperature of the raw material rises to the point where the thermal expansion and contraction part 512 expands. The reflux pipe 51 will be blocked. At this time, the reflux pipe 51 cannot reflux the raw material. At this time, the raw material will normally pass into the storage tank 3 and wait for processing, reducing the situation where the raw material temperature is too low during the initial extrusion and affects the extrusion. When stopping the processing, you only need to stop the heating component, and the reflux pipe 51 will be opened again to pass the raw material back into the reflux tank 5.

[0047] Working principle: The basic working principle is the same as that of Example 1, but a heating component capable of heating the raw materials and a reflux pipeline 51 for judging whether reflux is needed according to the temperature of the raw materials are added, thereby achieving reheating of the reflux of low-temperature products. It is also possible to judge whether processing is needed according to the temperature and pass the raw materials that are not involved in the processing in the distributor 2 out for reuse.

[0048] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A raw material feeding device for a PVC pipe extruder, characterized in that: The invention comprises a conveying main pipe (1), one end of which is used for introducing raw materials, and the other end of which is provided with a distributor (2), and the distributor (2) is provided with a plurality of discharge pipes (21), and the discharge pipes (21) are used for discharging products, and each of the discharge pipes (21) is provided with a corresponding storage tank (3), and the storage tank (3) is connected to the discharge pipe (21), and the storage tank (3) is used for feeding raw materials into the extruder; A screw rod (22) is arranged in the material distributor (2), the screw rod (22) is rotatably connected to the material distributor (2), the screw rod (22) is driven by a motor, the screw rod (22) is arranged along the length direction of the material distributor (2), and the screw rod (22) is used to drive the raw material to move along the material distributor (2); A stirring blade (31) is also arranged in the material storage tank (3). The stirring blade (31) is rotatably connected to the material storage tank (3) and is driven by a motor.

2. The raw material feeding device of a PVC pipe extruder according to claim 1, characterized in that: A heating tank (4) is also arranged next to the material storage tank (3); one end of the heating tank (4) is connected to the material storage tank (3), and the other end of the heating tank (4) is used to be connected to the extruder.

3. The raw material feeding device of a PVC pipe extruder according to claim 1, characterized in that: A weighing platform (32) is arranged under the material storage tank (3), and the material storage tank (3) is arranged on the weighing platform (32). The weighing platform (32) is used to weigh the weight of the material storage tank (3).

4. The raw material feeding device of a PVC pipe extruder according to claim 3, characterized in that: A discharge valve (23) is provided on the distributor (2) corresponding to each discharge pipe (21), and the discharge valve (23) is electrically connected to the weighing device corresponding to the discharge pipe (21). When the weight obtained by the weighing platform (32) is greater than or equal to a set value, the discharge valve (23) closes the passage between the discharge pipe (21) and the distributor (2).

5. The raw material feeding device of a PVC pipe extruder according to claim 4, characterized in that: Both ends of the distributor (2) are arranged at an angle, the middle of the distributor (2) is lower than the two ends of the distributor (2), the main conveying pipe (1) is connected to the middle of the distributor (2), and a discharge pipe (21) and a storage tank (3) are arranged in the middle of the distributor (2).

6. A raw material feeding device for a PVC pipe extruder according to claim 5, characterized in that: The distributor (2) is also provided with a mixing bowl (24), the mixing bowl (24) is fixedly connected to the distributor (2), the mouth of the mixing bowl (24) is connected to the interior of the distributor (2), and the bottom of the mixing bowl (24) is connected to the corresponding discharge pipe (21), and a stirrer (241) is provided in the distributor (2) corresponding to the mixing bowl (24), the stirrer (241) is rotatably connected to the distributor (2), and the stirrer (241) rotates in the mixing bowl (24).

7. A raw material feeding device for a PVC pipe extruder according to claim 6, characterized in that: The stirrer (241) also includes a stirring rod and a stirring blade (31), wherein the stirring blade (31) is fixedly connected to the stirring rod, and the stirring rod is driven by a motor. The angle between the stirring rod and the distributor (2) is less than 90 degrees, and the stirring blade (31) and the spiral rod (22) do not interfere with each other.

8. The raw material feeding device of a PVC pipe extruder according to claim 7, characterized in that: The distributor (2) is provided with a mixing bowl (24) corresponding to each discharge pipe (21), and a stirrer (241) is provided in each mixing bowl (24).

9. A raw material feeding device for a PVC pipe extruder according to claim 8, characterized in that: A heating component is also provided in the distributor (2), and the heating component is arranged along the distributor (2).

10. A raw material feeding device for a PVC pipe extruder according to claim 9, characterized in that: The invention also comprises a reflux tank (5), wherein a plurality of reflux pipelines (51) are arranged between the reflux tank (5) and the distributor (2), wherein one end of the reflux pipeline (51) is connected to a corresponding mixing bowl (24), and the other end of the reflux pipeline (51) is connected to a reflux pipe, and a thermal expansion and contraction component (512) is arranged at the connection between the reflux pipeline (51) and the mixing bowl (24), and the thermal expansion and contraction component (512) blocks the reflux pipeline (51) when it expands due to heat, and a reuse pipe (52) is also arranged between the reflux tank (5) and the main delivery pipe (1), wherein one end of the reuse pipe (52) is connected to the reflux tank (5), and the other end of the reuse pipe (52) is used to be connected to the main delivery pipe (1).

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