High-efficiency polyvinyl chloride drying equipment

Abstract

The high-efficiency polyvinyl chloride drying equipment comprises a first connecting plate, a second connecting plate, a roller and a hot air inlet port, air grooves are formed in one side of the first connecting plate and one side of the second connecting plate, connecting frames are fixedly connected to the first connecting plate and the second connecting plate, the connecting frames correspond to the air grooves, and the hot air inlet port is connected with the roller. Wherein one air groove makes contact with the hot air inlet port, grooves are formed in the opposite sides of the two connecting frames, air guiding fans are rotationally connected into the connecting frames, U-shaped strips are fixedly connected to the sides, located on the grooves, of the connecting frames, supports are fixedly connected to one sides of the U-shaped strips, supporting plates are fixedly connected to one ends of the supports, and first motors are fixedly connected to one sides of the supporting plates. The connecting frame and the U-shaped strip are arranged on one side of the first connecting plate and one side of the second connecting plate, an air inlet channel can be formed, the supporting frame and the activated carbon plate are installed on the two sides of the rotating plate to adsorb water vapor, circulating type filtering is formed, the drying efficiency is improved, and heat energy loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of polyvinyl chloride production technology, specifically to a high-efficiency polyvinyl chloride drying equipment. Background Technology

[0002] Polyvinyl chloride (PVC) is a polymer formed by the polymerization of vinyl chloride monomers under the action of initiators such as peroxides and azo compounds or under the action of light and heat according to the free radical polymerization mechanism. It is widely used in the construction, packaging, electronics, medical and daily life fields. After ethylene is produced, PVC needs to be dried in order to remove moisture and improve processing performance.

[0003] In the batch drying process of polyvinyl chloride (PVC), rotary drum dryers are usually used for drying, and air outlets are set to remove moisture from the material. However, as PVC is dried and moved during rotation, the moisture carries heat with it as it leaves the drum, resulting in heat loss.

[0004] According to Chinese Patent Publication No. CN212902354U, "A High-Efficiency Drying Converter for Polyvinyl Chloride Production," the process mainly involves first opening the solenoid valve of the preheating pipe to release heptane from the heptane circulation channel. Simultaneously, due to the relatively long length of the preheating pipe, the circulating temperature of the heptane can be initially reduced, minimizing the initial temperature impact on the internal circulation pipe of the reaction tower. After circulation is complete, the solenoid valve of the preheating pipe is closed, and the solenoid valve of the circulation pipe is opened to officially begin operation. This reduces temperature shocks and extends the equipment's lifespan. During the drying process of polyvinyl chloride, the heat generated by the rotating drum heating is removed along with the moisture from the polyvinyl chloride, resulting in heat loss, which is detrimental to the batch drying of polyvinyl chloride.

[0005] Therefore, a high-efficiency polyvinyl chloride (PVC) drying equipment is proposed to solve the problem that the heat generated by the rotary drum heating during the PVC drying process will be removed along with the PVC moisture, resulting in heat loss and hindering the batch drying of PVC. Utility Model Content

[0006] The technical problem this invention aims to solve is that during the drying process of polyvinyl chloride (PVC), the heat generated by the rotating drum heating will be removed along with the water vapor of PVC, resulting in heat loss and hindering the batch drying of PVC. Therefore, this invention proposes a high-efficiency PVC drying device.

[0007] The technical solution adopted by this utility model to solve the technical problem is as follows: a high-efficiency polyvinyl chloride drying equipment, including a first connecting plate, a second connecting plate, a roller, and a hot air inlet port. Air grooves are provided on one side of both the first and second connecting plates. Connecting frames are fixedly connected to both the first and second connecting plates, and the connecting frames correspond to the air grooves. One of the air grooves contacts the hot air inlet port. Grooves are provided on opposite sides of the two connecting frames. A guide fan is rotatably connected inside the connecting frame. A U-shaped strip is fixedly connected to one side of the connecting frame located in the groove. A bracket is fixedly connected to one side of the U-shaped strip, and a support plate is fixedly connected to one end of the bracket. A first motor is fixedly connected to one side of the support plate. A screw is fixedly connected to the output end of the first motor. A pressure plate is threadedly connected to one side of the screw. The pressure plate corresponds to one side of the U-shaped strip. An operating groove is provided inside the pressure plate. A second motor is fixedly connected to the operating groove. A rotating plate is fixedly connected to one end of the second motor. Activated carbon plates are evenly arranged on the upper and lower sides of the rotating plate.

[0008] As a preferred technical solution of this utility model, the upper and lower sides of the rotating plate are uniformly fixedly connected with support frames, and the activated carbon plate is slidably connected inside the support frames. By setting the support frames and the activated carbon plate, the water vapor in the hot air can be stripped off.

[0009] As a preferred technical solution of this utility model, positioning holes are provided on both the upper and lower sides of the support frame, and positioning rods are inserted into the positioning holes. The positioning rods are threadedly connected to the activated carbon plates. By setting the positioning rods, multiple activated carbon plates can be staggered, increasing the contact between the activated carbon plates and water vapor.

[0010] As a preferred technical solution of this utility model, a sealing plate is in contact with one side of the support frame, and an electric push rod is fixedly connected to one side of the sealing plate. The electric push rod is fixedly connected to one side of the connecting frame. By setting the electric push rod and the sealing plate, the gap between the pressure plate and the rotating plate can be sealed.

[0011] As a preferred technical solution of this utility model, an air inlet is provided on one side of the second connecting plate. The air inlet is connected to another air groove. A dustproof net is fixedly connected to the air inlet. By setting the dustproof net, dust can be reduced from entering the U-shaped strip.

[0012] The present invention has the following advantages: by setting a connecting frame and a U-shaped strip on one side of the first connecting plate and the second connecting plate, an air intake channel can be formed, and by installing a support frame and an activated carbon plate on both sides of the rotating plate to adsorb water vapor and form a circulating filter, the drying efficiency is improved and the heat loss is reduced. Attached Figure Description

[0013] Figure 1This is a side sectional view of a preferred embodiment of a high-efficiency polyvinyl chloride drying device of the present invention.

[0014] Figure 2 This is a three-dimensional sectional view of a preferred embodiment of a high-efficiency polyvinyl chloride drying device of the present invention.

[0015] Figure 3 This is a side sectional view of the connecting frame of a high-efficiency polyvinyl chloride drying device according to a preferred embodiment of the present invention.

[0016] Explanation of reference numerals in the attached drawings: 1. First connecting plate; 2. Second connecting plate; 3. Roller; 4. Hot air inlet port; 5. Air groove; 6. Connecting frame; 7. U-shaped strip; 8. Bracket; 9. Support plate; 10. Screw; 11. Pressure plate; 12. Rotating plate; 13. Guide fan; 14. Dustproof net; 15. Support frame; 16. Activated carbon plate; 17. Positioning hole; 18. Positioning rod; 19. Electric push rod; 20. Sealing plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to the following: Figure 1-3The diagram shows a high-efficiency polyvinyl chloride (PVC) drying device, comprising a first connecting plate 1, a second connecting plate 2, a roller 3, and a hot air inlet port 4. The roller 3 has a built-in arc-shaped plate structure that can scrape up the PVC, achieving contact between the PVC and the hot air flow. A drive structure is provided on the bottom side of the roller 3, which is rotated by a motor. The hot air inlet port 4 is connected to an external hot air supply device. Air grooves 5 are provided on one side of both the first connecting plate 1 and the second connecting plate 2. Connecting frames 6 are fixedly connected to both the first connecting plate 1 and the second connecting plate 2, corresponding to the air grooves 5. One air groove 5 contacts the hot air inlet port 4. Grooves are provided on opposite sides of the two connecting frames 6. A guide fan 13 is rotatably connected inside the connecting frame 6. The guide fan 13 located on the side of the second connecting plate 2 guides the airflow inside the roller 3 into the U-shaped strip 7, while the other guide fan 13 guides the airflow into the roller. Inside the 3, a U-shaped strip 7 is fixedly connected to one side of the connecting frame 6 located in the groove. A stop strip is fixedly connected inside the U-shaped strip 7. The stop strip corresponds to both sides of the rotating plate 12. A bracket 8 is fixedly connected to one side of the U-shaped strip 7, and a support plate 9 is fixedly connected to one end of the bracket 8. A first motor is fixedly connected to one side of the support plate 9. The first motor drives the screw 10 to rotate, which can cause the pressure plate 11 to contact the U-shaped strip 7, thereby forming the air intake channel. The output end of the first motor is fixedly connected to the screw 10. A pressure plate 11 is threadedly connected to one side of the screw 10. The pressure plate 11 corresponds to one side of the U-shaped strip 7. An operating groove is opened in the pressure plate 11. A second motor is fixedly connected to the operating groove. A rotating plate 12 is fixedly connected to one end of the second motor. The second motor drives the rotating plate 12 to rotate, which can cause the activated carbon plates 16 located on both sides of the rotating plate 12 to change position. Activated carbon plates 16 are evenly arranged on the upper and lower sides of the rotating plate 12.

[0019] The activated carbon plate 16 is slidably connected inside the support frame 15, and the support frame 15 is fixedly connected to the upper and lower sides of the rotating plate 12. By setting the support frame 15, the activated carbon plate 16 can be connected.

[0020] The activated carbon plate 16 is threaded with a positioning rod 18, which is inserted into a positioning hole 17. The positioning hole 17 is located on the upper and lower sides of the support frame 15. By setting the positioning rod 18, the position of the activated carbon plate 16 in the support frame 15 can be changed, so that the activated carbon plates 16 on the same side are staggered, increasing the contact surface between the airflow and the activated carbon plate 16 and improving the dehumidification effect.

[0021] Among them, an electric push rod 19 is fixedly connected to one side of the connecting frame 6. The electric push rod 19 is fixedly connected to one side of the sealing plate 20. The sealing plate 20 contacts one side of the support frame 15. By setting the electric push rod 19, the sealing plate 20 is driven to contact the gap between the rotating plate 12 and the pressure plate 11, thereby cooperating with the baffle to increase the sealing effect inside the U-shaped strip 7.

[0022] The dustproof net 14 is fixedly connected to the air inlet, and another air groove 5 is connected to the air inlet. The air inlet is located on one side of the second connecting plate 2. By setting the dustproof net 14 on one side of the air inlet, dust can be reduced from entering the U-shaped strip 7.

[0023] Working principle: Polyvinyl chloride (PVC) enters from the upper side of the first connecting plate 1 to the bottom side of the drum 3, and then hot air inlet port 4 enters simultaneously. At this time, the rotation of the drum 3 drives the PVC to rotate inside the drum 3, and the arc plate structure causes the PVC to be lifted, so that the PVC comes into contact with the hot air flow, and then achieves drying. At the same time, the dried hot air enters the air groove 5 through the air inlet of the second connecting plate 2, and then enters the right connecting frame 6 through the guide fan 13 and enters the U-shaped strip 7. At this time, the moisture is adsorbed by the activated carbon plate 16. After a period of time, the first motor can be started to drive the screw 10 to rotate, and cause the pressure plate 11 to separate from the U-shaped strip 7. Then the second motor drives the rotating plate 12 to rotate, so that the positions of the activated carbon plates 16 on both sides of the rotating plate 12 change, and then the pressure plate 11 contacts the U-shaped strip 7, which can achieve continuous adsorption of moisture, improve the utilization rate of heat energy, and thus improve the drying efficiency.

[0024] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0025] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An efficient PVC drying apparatus comprising a first engaging plate (1), a second engaging plate (2), a roller (3) and a hot air inlet port (4), characterized in that, The first adapter plate (1) and the second adapter plate (2) are provided with air grooves (5) on one side, the first adapter plate (1) and the second adapter plate (2) are fixedly connected with adapter frames (6), the adapter frames (6) correspond to the air grooves (5), one of the air grooves (5) is in contact with the hot gas inlet port (4), the opposite sides of the two adapter frames (6) are provided with grooves, the adapter frames (6) are rotatably connected with wind guide fans (13), the adapter frames (6) are fixedly connected with U-shaped strips (7) on one side of the grooves, the U-shaped strips (7) are fixedly connected with supports (8) on one side and the supports (8) are fixedly connected with support plates (9) on one end, the support plates (9) are fixedly connected with first motors on one side, the output ends of the first motors are fixedly connected with screw rods (10), the screw rods (10) are threadedly connected with pressing plates (11) on one side, the pressing plates (11) correspond to the U-shaped strips (7) on one side, the pressing plates (11) are provided with operation grooves, the operation grooves are fixedly connected with second motors, the second motors are fixedly connected with rotating plates (12) on one end, the rotating plates (12) are uniformly provided with activated carbon plates (16) on the upper and lower sides.

2. The efficient PVC drying apparatus as claimed in claim 1, wherein, The rotating plates (12) are fixedly connected with support frames (15) on the upper and lower sides, and the activated carbon plates (16) are slidably connected in the support frames (15).

3. The efficient PVC drying apparatus as claimed in claim 2, wherein, The support frames (15) are provided with positioning holes (17) on the upper and lower sides, the positioning holes (17) are inserted with positioning rods (18), and the positioning rods (18) are threadedly connected with the activated carbon plates (16).

4. The efficient PVC drying apparatus as claimed in claim 3, wherein, The support frames (15) are in contact with sealing plates (20) on one side, the sealing plates (20) are fixedly connected with electric push rods (19) on one side, and the electric push rods (19) are fixedly connected on one side of the adapter frames (6).

5. The efficient PVC drying apparatus as claimed in claim 1, wherein, The second adapter plate (2) is provided with an air inlet on one side, the air inlet is communicated with the other air groove (5), and the air inlet is fixedly connected with a dust screen (14).

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