Mixing and dehumidifying integrated system for high-performance PVC-O pipe production

Abstract

The invention belongs to the technical field of pipe processing, and discloses a mixing and dehumidifying integrated system for high-performance PVC-O pipe production, the mixing and dehumidifying integrated system comprises a storage bin, a dehumidifying integrated device and a kneading device, the dehumidifying integrated device comprises a cavity, a hollow stirring shaft and an auxiliary device, and a feed port of the cavity is connected with a discharge port of the storage bin; the hollow stirring shaft is rotationally connected into the cavity, and one end of the outer surface of the hollow stirring shaft is provided with a paddle; a plurality of bionic micropores are formed in the side wall of the hollow stirring shaft in an array manner; a double-helix channel is arranged in the hollow stirring shaft and is used for conveying clean hot air and discharging wet and hot waste gas; the auxiliary device is connected with one end of the double-spiral channel and used for providing clean hot air. By arranging the dehumidification integrated device and directly connecting the storage bin and the kneading device, the PVC raw materials directly enter the dehumidification integrated device from the storage bin and then enter the kneading device, and the phenomena of caking, secondary moisture absorption and the like of the PVC raw materials in air due to the fact that transportation equipment is used for secondary transportation are avoided.

Description

Technical Field

[0001] This invention belongs to the field of pipe processing technology, specifically relating to a high-performance PVC-O pipe production mixing and dehumidification integrated system. Background Technology

[0002] Biaxially oriented polyvinyl chloride (PVC-O) pipes have become an important development direction in the high-end pressure piping market due to their superior circumferential strength, impact resistance, and pressure resistance. Their performance advantages stem from their unique biaxially oriented molecular structure, the formation of which is highly dependent on the quality of the dry powder prepared during the mixing process. The moisture content, dispersion uniformity, and impurity content of the raw materials are the core factors determining the final performance of PVC-O pipes (such as burst pressure and long-term hydrostatic strength).

[0003] In the field of PVC raw material kneading and processing, the control of raw material humidity and the problem of agglomeration have long seriously restricted product quality and production efficiency. For example, calcium powder agglomerates and carbon black is unevenly dispersed. Traditional production processes generally use independent drying equipment to pre-treat materials. In response, some companies have introduced static stirring drying mechanisms, adding stirring paddles in the drying chamber to try to improve heat exchange efficiency. However, its fixed structure cannot adapt to the dynamic working conditions of the kneader, and uneven heating of the material exacerbates the risk of local agglomeration. For example, Chinese utility model patent application number CN201820023572.5 discloses a dehumidifying dryer. Specifically, this utility model discloses a dehumidifying dryer, including a machine body. The top and bottom of the left side of the machine body are movably connected to cabinet doors by hinges. A support platform is fixedly connected to the bottom of the left side of the machine body. A drying drum is fixedly connected to the top of the support platform. An air inlet pipe is provided on the right side of the top of the drying drum. A telescopic hose is connected to the right side of the air inlet pipe. An air outlet pipe is provided on the right side of the top of the machine body. This utility model, through the coordinated use of a first connecting pipe, a second connecting pipe, an exhaust hood, fan blades, a connecting rod, a bearing seat, and a transmission shaft, enables the dehumidifier to perform uniform dehumidification. This solves the problem of poor dehumidification performance caused by the dehumidifier's inability to uniformly dehumidify materials, resulting in varying humidity levels among different materials. This greatly facilitates the use of dehumidifiers and is worthy of promotion.

[0004] However, when using the above-mentioned equipment to dry materials, the dried materials are temporarily stored and then manually transferred to the kneader after the production equipment is started. During this process, the materials are exposed to the workshop environment and are very prone to secondary moisture absorption. Summary of the Invention

[0005] Based on this, this application provides a high-performance PVC-O pipe production mixing and dehumidification integrated system to solve the problem that materials are exposed to the workshop environment during the transfer to the kneader and are prone to secondary moisture absorption.

[0006] The technical solution to the above-mentioned technical problems in this application is as follows:

[0007] A high-performance PVC-O pipe production mixing and dehumidification integrated system includes:

[0008] The system comprises a storage silo, a dehumidification integrated device, and a kneading device. The storage silo stores PVC raw materials. The dehumidification integrated device includes a cavity, a hollow stirring shaft, and auxiliary devices. The inlet of the cavity is connected to the outlet of the storage silo. The hollow stirring shaft is rotatably connected to the cavity, and its central axis coincides with the central axis of the cavity. One end of the outer surface of the hollow stirring shaft is provided with a blade for stirring the PVC raw materials between the cavity and the hollow stirring shaft. A plurality of biomimetic micropores are arrayed on the side wall of the hollow stirring shaft for conveying clean hot air between the cavity and the hollow stirring shaft. A double helical channel is provided inside the hollow stirring shaft for conveying clean hot air and discharging humid and hot exhaust gas. The auxiliary device is connected to one end of the double helical channel for providing clean hot air. The inlet of the kneading device is connected to the outlet of the cavity for kneading the PVC raw materials.

[0009] Preferably, the system further includes a detection device, a drive device, and a main server. The detection device is located at one end of the feed inlet of the cavity and is used to acquire parameter information. The drive device is connected to the hollow stirring shaft and is used to drive the hollow stirring shaft to rotate. The main server includes an information receiving module and an instruction execution module. The information receiving module is used to receive parameter information and determine whether the parameter information is the same as the preset parameters. The instruction execution module is used to respond to the determination result of the information receiving module and control the start and stop of the drive device and the auxiliary device.

[0010] Preferably, the double-helix channel includes a fresh hot air channel and a humid heat exhaust channel, wherein the fresh hot air channel and the humid heat exhaust channel are mirror-symmetrical and arranged in opposite spirals.

[0011] Preferably, the humid heat exhaust channel is provided with an inclined sintered filter screen, which is used to disperse the compressed gas into a uniform micro-flow.

[0012] Preferably, the auxiliary device includes a hot air generator, an exhaust fan, and a gas supply fan. The hot air generator is connected to the inlet of the new hot air channel and is used to provide clean hot air. The exhaust fan is connected to the humid heat exhaust channel and is used to remove humid heat exhaust gas. The gas supply fan is disposed on one side of the cavity and is connected to the hollow stirring shaft and is used to supply inert gas into the hollow stirring shaft.

[0013] Preferably, a heat-conducting oil circulation pipe is also provided inside the hollow stirring shaft. The heat-conducting oil circulation pipe runs parallel to the fresh hot air channel, and the inlet of the heat-conducting oil circulation pipe is connected to an oil pump disposed on the outer wall of the cavity. The outlet of the heat-conducting oil circulation pipe is connected to a heat exchanger disposed on the outer wall of the cavity. The heat-conducting oil circulation pipe is used to collect the heat generated by the friction of the rotating blades.

[0014] Preferably, the outlet of the heat exchanger is connected to the inlet of the hot air generator.

[0015] Preferably, both ends of the cavity and the hollow stirring shaft are provided with rotating components, which enable the hollow stirring shaft to rotate within the cavity.

[0016] Preferably, the driving device is located on the outside of the cavity and is connected in cooperation with the rotating component to drive the rotating component and the hollow stirring shaft to rotate.

[0017] The technical solution adopted in this application can achieve the following beneficial effects:

[0018] 1. By setting up an integrated dehumidification device that is directly connected to the storage silo and the kneading device, the PVC raw material can directly enter the integrated dehumidification device from the storage silo and then enter the kneading device, avoiding secondary transportation using transport equipment, which can cause the PVC raw material to clump together or absorb moisture again in the air.

[0019] 2. By setting up a cavity and a hollow stirring shaft, and installing blades on the hollow stirring shaft, the hollow stirring shaft drives the blades to rotate, breaking up the clumps of PVC raw material that enters between the cavity and the hollow stirring shaft. At the same time, a double spiral channel is set up to form a physical separation between the two channels, creating a counter-current path. Clean hot air enters between the cavity and the hollow stirring shaft through biomimetic micropores to dehumidify and dry the PVC raw material. The hot and humid exhaust gas enters the hollow stirring shaft in the opposite direction and is discharged from the other side of the double spiral channel, thus completing the secondary dehumidification of the PVC raw material. This solves the problem of PVC raw material clumping and absorbing moisture again in the air, while improving the drying parameters of the PVC raw material, allowing it to achieve a better kneading state. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the integrated mixing and dehumidification system for the production of high-performance PVC-O pipes according to this application.

[0021] Figure 2 This is a schematic diagram of the overall dehumidification integrated device of the high-performance PVC-O pipe production mixing and dehumidification integrated system of this application.

[0022] Figure 3 This is a bottom view of the dehumidification integrated device of the high-performance PVC-O pipe production mixing and dehumidification integrated system of this application.

[0023] Figure 4 This is a top view of the dehumidification integrated device of the high-performance PVC-O pipe production mixing and dehumidification integrated system of this application.

[0024] Figure 5 This is a cross-sectional view of the dehumidification integrated device of the high-performance PVC-O pipe production mixing and dehumidification integrated system of this application.

[0025] Figure 6 This is a partial schematic diagram of the dehumidification integrated device of the high-performance PVC-O pipe production mixing and dehumidification integrated system of this application. Figure 1 .

[0026] Figure 7 This is a partial schematic diagram of the dehumidification integrated device of the high-performance PVC-O pipe production mixing and dehumidification integrated system of this application. Figure 2 .

[0027] In the diagram: storage silo 100, dehumidification integrated device 200, cavity 210, hollow stirring shaft 220, impeller 221, biomimetic micropores 222, double spiral channel 230, fresh hot air channel 231, humid heat exhaust channel 232, inclined sintered filter screen 233, heat transfer oil circulation pipe 234, oil pump 235, heat exchange component 236, rotating component 240, auxiliary device 250, hot air generator 251, exhaust component 252, air supply component 253, detection device 260, drive device 270, kneading device 300. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0029] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figures 1 to 7 This application provides a high-performance PVC-O pipe production mixing and dehumidification integrated system, including: a storage silo 100, a dehumidification integrated device 200, and a kneading device 300. The storage silo 100 stores PVC raw materials. The dehumidification integrated device 200 includes a cavity 210, a hollow stirring shaft 220, and an auxiliary device 250. The inlet of the cavity 210 is connected to the outlet of the storage silo 100. The hollow stirring shaft 220 is rotatably connected inside the cavity 210, and the central axis of the hollow stirring shaft 220 coincides with the central axis of the cavity 210. One end of the outer surface of the hollow stirring shaft 220 is provided with a blade 221. 1. A device for stirring PVC raw materials between the cavity 210 and the hollow stirring shaft 220; a plurality of biomimetic micropores 222 are arrayed on the side wall of the hollow stirring shaft 220, the biomimetic micropores 222 being used to deliver clean hot air between the cavity 210 and the hollow stirring shaft 220; a double helical channel 230 is provided inside the hollow stirring shaft 220, the double helical channel 230 being used to deliver clean hot air and discharge humid and hot exhaust gas; an auxiliary device 250 is connected to one end of the double helical channel 230 for providing clean hot air; the inlet of the kneading device 300 is connected to the outlet of the cavity 210 for kneading PVC raw materials.

[0032] Specifically, the storage bin 100 can use a storage hopper commonly used in the PVC manufacturing industry. The storage bin 100 can be set above the dehumidification integrated device 200, or it can be connected to a transport device, such as vacuum transport or winch feeder, depending on the specific location. The PVC raw materials in the storage bin have already been dehumidified. The cavity 210 is cylindrical and made of, but not limited to, 316L stainless steel with a wall thickness of 12mm. The inner wall of the cavity 210 is mirror-polished to prevent material adhesion. The inlet of the cavity 210 is connected to a pneumatic valve (such as a butterfly valve) via a flange to achieve a quick and sealed connection with the outlet of the storage bin 100. The bottom of the cavity 210 is a conical groove (inclination angle not less than 45°), and the outlet of the cavity 210 is located at the bottom of the conical groove and is sealed to the inlet of the kneading device 300 via a flange. The outer wall of the cavity 210 is wrapped with an insulation layer, which is made of, but not limited to, sponge, rock wool, cotton cloth, etc.

[0033] The hollow stirring shaft 220 is a high-strength hollow structure that runs through the center of the cavity 210. Its bottom end is fixed to the inner wall of the cavity 210 via a bearing seat. Several biomimetic micropores 222 are arrayed on the outer wall of the hollow stirring shaft 220. These micropores 222 are laser-drilled (pore diameter from 80μm to 150μm, density 300 pores / cm³). 2 The hollow stirring shaft 220 is constructed with two mirror-symmetrical, oppositely oriented spiral channels (spiral angle 45 to 60 degrees), forming a counter-current path. Multiple sets of spiral blades 221 (adjustable angle) are welded to the surface of the hollow stirring shaft 220. These blades enhance material kneading and are integrally formed with the hollow stirring shaft to prevent loosening. The angle of the blades 221 is manually adjusted according to the weight of the material. The storage silo 100, dehumidification integrated device 200, and kneading device 300 are fixed and connected using a frame.

[0034] Furthermore, the PVC raw material is processed through dehumidification and other processes to meet preset requirements, and then stored in the storage silo 100, awaiting subsequent processes. When kneading the PVC raw material, the outlet of the storage silo 100 is opened, allowing the PVC raw material to enter from the inlet of the cavity 210 and be positioned between the inner wall of the cavity 210 and the outer wall of the hollow stirring shaft 220. The hollow stirring shaft 220 rotates, driving the blades 221 to stir the PVC raw material, forming a vortex shape, and heating the PVC raw material through shear force. Simultaneously, auxiliary devices are activated. 250. The auxiliary device 250 introduces clean hot air from one side of the double helix channel 230 into the hollow stirring shaft 220, and then into the cavity 210 through the biomimetic micropores 222 to dry and dehumidify the PVC raw material. The hot and humid exhaust gas enters the hollow stirring shaft 220 through the biomimetic micropores 222 and is discharged from the other side of the double helix channel 230. After the parameters of the PVC raw material are manually tested and meet the standards, the processed PVC raw material enters the kneading device 300 from the outlet of the cavity 210 for kneading.

[0035] The technical solution of the high-performance PVC-O pipe production mixing and dehumidification integrated system adopted in this application can achieve the following beneficial effects:

[0036] 1. By setting up a dehumidification integrated device 200, which is directly connected to the storage silo 100 and the kneading device 300, the PVC raw material can directly enter the dehumidification integrated device 200 from the storage silo 100 and then enter the kneading device 300, avoiding secondary transportation using transportation equipment, which would cause the PVC raw material to clump together or absorb moisture again in the air.

[0037] 2. By setting up a cavity 210 and a hollow stirring shaft 220, and setting a blade 221 on the hollow stirring shaft 220, the hollow stirring shaft 220 drives the blade 221 to rotate, thereby breaking up the PVC raw material that has clumped between the cavity 210 and the hollow stirring shaft 220. At the same time, a double spiral channel 230 is set up to form a dual-channel physical separation and a counter-current path, so that clean hot air enters from the biomimetic micropores 222 between the cavity 210 and the hollow stirring shaft 220 to dehumidify and dry the PVC raw material. The hot and humid exhaust gas enters the hollow stirring shaft 220 in the opposite direction and is discharged from the other side of the double spiral channel 230, thereby completing the secondary dehumidification of the PVC raw material, solving the problem of PVC raw material clumping and secondary moisture absorption in the air, and improving the drying parameters of the PVC raw material to achieve a better kneading state.

[0038] Based on the above method, to improve convenience, it also includes a detection device 260, a drive device 270, and a main server. The detection device 260 is located at one end of the feed inlet of the cavity 210 and is used to acquire parameter information. The drive device 270 is connected to the hollow stirring shaft 220 and is used to drive the hollow stirring shaft 220 to rotate. The main server includes an information receiving module and an instruction execution module. The information receiving module is used to receive parameter information and determine whether the parameter information is the same as the preset parameters. The instruction execution module is used to respond to the judgment result of the information receiving module and control the start and stop of the drive device 270 and the auxiliary device 250.

[0039] Specifically, the detection device 260 employs, but is not limited to, microwave dielectric sensors, temperature sensors, and humidity sensors, preferably microwave dielectric sensors. Mounting holes are provided at both the inlet and outlet of the cavity 210. The microwave dielectric sensor is detachably connected to the mounting holes via bolts and extends into the cavity 210, with the connection sealed. The drive device 270 employs, but is not limited to, motors and shafts, preferably motors. The motor is connected to the hollow stirring shaft 220 via gear engagement, belt drive, or other means, and is electrically connected to the main server. The information receiving module is electrically connected to the microwave dielectric sensor, which acquires parameter information of the PVC raw material (including humidity and dryness information). The information receiving module contains standard parameter information (manually input by the operator). By judging the parameter information and the standard parameter information, it issues a command to turn the drive device 270 on or off. The command execution module is electrically connected to the drive device 270. After receiving the command to turn the drive device 270 on or off, the command execution module controls the drive device 270 to turn on or off.

[0040] Furthermore, after the operator inputs standard parameter information into the cavity 210, the detection device 260 detects it and acquires its parameter information. The information receiving module receives and judges the parameter information and the standard parameter information. When the parameter information is higher than the standard parameter information (humidity is higher than the standard humidity), the instruction execution module controls the drive device 270 to turn on. The drive device 270 drives the hollow stirring shaft 220 to rotate, thereby rotating the paddle 221 to stir and dehumidify the PVC material. When the parameter information is less than or equal to the standard information (humidity is less than or equal to the standard humidity), the instruction execution module controls the drive device 270 to turn off (if it is in the off state, no other operation is required). By setting up the detection device 260 and the main server, the problem of difficult manual detection operation is solved, and the problem of inaccurate detection data due to the large number of human factors is also solved.

[0041] In the above scheme, the double helix channel 230 includes a fresh hot air channel 231 and a humid heat exhaust channel 232. The fresh hot air channel 231 and the humid heat exhaust channel 232 are mirror-symmetrical and arranged in opposite spirals.

[0042] The double-helix channel 230 is formed by precision casting or welding. One end of the new hot air channel 231 and the humid heat exhaust channel 232 both extend from the end of the hollow stirring shaft 220 near the kneading device 300 and are located at the axis of the hollow stirring shaft 220. The penetration is sealed (using sealed bearings, etc.), and the new hot air channel 231 and the humid heat exhaust channel 232 remain stationary when the hollow stirring shaft 220 rotates. A pressure regulating valve is installed at the end of the hollow stirring shaft 220 to regulate the gradient pressure, ensuring that the hot air penetrates the material layer without causing turbulence. Clean hot air is delivered from the centerline of the hollow stirring shaft 220 with a precisely controlled gradient pressure, and penetrates the high-speed moving material layer evenly and gently through the precisely designed biomimetic micropore array (pore size distribution and density optimized by fluid dynamics) on the surface of the hollow stirring shaft 220.

[0043] The aforementioned pressure gradient stratification structure includes: Level 1: High-pressure zone of material layer (0.01MPa) allows hot air to penetrate the micropores; Level 2: Top gas collection zone of cavity 210 (0.008MPa) where exhaust gas naturally rises; Level 3: Exhaust channel (0.005MPa) where pressure is reduced through the Venturi effect.

[0044] The new hot air channel 231 and the humid heat exhaust channel 232 inside the hollow stirring shaft 220 have the same temperature. The new hot air channel 231 is used to introduce high-temperature drying hot air into the hollow stirring shaft 220, and then enter the cavity 210 through the biomimetic micropores 222 to dry the PVC raw material. The dried hot air carries a lot of moisture, and then enters the hollow stirring shaft 220 through the biomimetic micropores 222. The humid heat exhaust channel 232 exhausts the moisture carrying a lot of moisture by suction, thereby achieving the purpose of hot air drying and moisture removal.

[0045] In one embodiment of this application, the humid heat exhaust channel 232 is provided with an inclined sintered filter screen 233, which is used to disperse the compressed gas into a uniform micro-flow.

[0046] The inclined sintered filter screen 233 uses multi-layer 316L sintered mesh (pore size Φ20μm) with an installation angle of 45°. Through its gradient deep filtration structure, top-grade corrosion-resistant and high-temperature-resistant material (316L), and key inclined design (utilizing gravity drainage and oil removal to prevent clogging), the inclined multi-layer 316L sintered filter screen achieves high-efficiency filtration, low pressure drop operation, ultra-long service life, and low maintenance costs in humid and hot exhaust gas treatment. Furthermore, a back-blowing device, such as a pulse back-blowing cleaning device, can be installed in the humid and hot exhaust duct 232 to clean the filter screen every 15 minutes using 0.6MPa compressed air to prevent clogging.

[0047] In another embodiment of this application, the auxiliary device 250 includes a hot air generator 251, an exhaust fan 252, and a gas supply fan 253. The hot air generator 251 is connected to the inlet of the new hot air channel 231 and is used to provide clean hot air. The exhaust fan 252 is connected to the humid heat exhaust channel 232 and is used to remove humid heat exhaust gas. The gas supply fan 253 is disposed on one side of the cavity 210 and communicates with the hollow stirring shaft 220, and is used to supply inert gas into the hollow stirring shaft 220.

[0048] The hot air generator 251 employs, but is not limited to, a hot air blower, and the exhaust fan 252 employs, but is not limited to, an exhaust fan with a rotation speed of 30%, thereby establishing a slight positive pressure (positive pressure of 0.008 MPa) in the cavity 210. The air supply component 253 employs, but is not limited to, a nitrogen compensator with a compensation pressure of 0.005 MPa, used to prevent material extraction problems caused by initial negative pressure. The hot air generator 251 is connected to the side of the cavity 210 near the kneading device 300, and its outlet is connected to the inlet of the new hot air channel 231 to provide clean hot air; the exhaust fan 252 is also located on one side of the cavity 210, and one end of the exhaust fan 252 is connected to the outlet of the humid heat exhaust channel 232 to discharge humid heat exhaust gas.

[0049] Furthermore, the detection device detects the PVC raw material entering the cavity, obtains parameter information, and the information receiving module makes a judgment. When the parameter information is greater than the standard parameter information, it issues an instruction to turn on the hot air generator 251, the exhaust fan 252, and the air supply fan 253, and the instruction execution module controls the turning on of the hot air generator 251, the exhaust fan 252, and the air supply fan 253. Then, clean hot air enters from the new hot air channel 231 and passes through the bionic micropores 222 into the cavity 210 to dehumidify the PVC raw material. The hot and humid exhaust gas enters the hollow stirring shaft 220 from the bionic micropores 222 and is discharged from the hot and humid exhaust channel 232. At the same time, the air supply fan 253 replenishes nitrogen into the cavity 210. When the parameter information is less than or equal to the standard parameter information, it issues an instruction to turn off the hot air generator 251, the exhaust fan 252, and the air supply fan 253, and the instruction execution module controls the turning off of the hot air generator 251, the exhaust fan 252, and the air supply fan 253.

[0050] In another embodiment of this application, a heat-conducting oil circulation pipe 234 is further provided inside the hollow stirring shaft 220. The heat-conducting oil circulation pipe 234 runs parallel to the fresh hot air channel 231, and the inlet of the heat-conducting oil circulation pipe 234 is connected to an oil pump 235 disposed on the outer wall of the cavity 210. The outlet of the heat-conducting oil circulation pipe 234 is connected to a heat exchanger 236 disposed on the outer wall of the cavity 210. The heat-conducting oil circulation pipe 234 is used to collect the heat generated by the rotation and friction of the impeller 221. The outlet of the heat exchanger 236 is connected to the inlet of the hot air generator 251.

[0051] The heat transfer oil circulation pipe 234 is directly integrated inside the hollow stirring shaft 220 and runs parallel to the new hot air channel 231. The heat transfer oil circulation pipe 234 is a ring-shaped design (diameter 20mm to 40mm). Heat energy recovery coupling frictional heat is captured by the heat transfer oil circulation pipe 234. The outlet of the heat transfer oil circulation pipe 234 is connected to a heat exchanger 236 (such as a heat exchanger), and the outlet of the heat exchanger 236 is connected to the inlet of the hot air generator 251. The oil pump 235 supplies oil into the heat transfer oil circulation pipe 234, and through circulation, the oil that has absorbed heat returns to the oil pump 235. The oil then enters the heat exchanger 236 along the pipe to utilize and separate the heat. The oil returns to the oil pump 235, and the separated hot air enters the hot air generator 251, and then from the hot air generator 251 into the new hot air channel 231, thereby realizing the reuse of heat energy.

[0052] Furthermore, the temperature of the heat transfer oil in the heat transfer oil circulation pipe 234 is similar to or higher than the temperature of the hot air in the new hot air channel 231. The heat transfer oil has a heat preservation effect on the hot air. When the blade 221 rotates and rubs against the rotating material, it generates heat, which is captured by the heat transfer oil circulation pipe 234, raising its temperature and further increasing the temperature of the hot air in the new hot air channel 231. After the heat transfer oil completes its circulation, it returns to the oil pump 235, where the heat is converted through the heat exchanger 236, and the temperature of the heat transfer oil is brought back to a level similar to that of the hot air in the new hot air channel 231 before it circulates again, thus completing the recovery of heat energy. The recovered heat is then introduced into the hot air generator 251, ensuring that the hot air entering the new hot air channel 231 can also be maintained at the preset temperature. The entire process realizes the recovery of heat energy and its utilization.

[0053] Based on the above scheme, both ends of the cavity 210 and the hollow stirring shaft 220 are provided with rotating parts 240, which enable the hollow stirring shaft 220 to rotate within the cavity 210.

[0054] The rotating component 240 is sealed, and the new hot air channel 231 and the humid heat exhaust channel 232 pass through the center of the rotating component 240. The outer side of the rotating component 240 is connected to the bottom of the cavity 210. The rotating component 240 is connected by a bearing (the bearing is a sealed bearing). The outer shaft is connected to the inner wall of the rotating component 240, and the inner shaft is connected to the hollow stirring shaft 220. This achieves the purpose of the hollow stirring shaft 220 rotating under the drive of the drive device 270, while the cavity 210 does not rotate. At the same time, it solves the problem that the new hot air channel 231 and the humid heat exhaust channel 232 are rotated by the hollow stirring shaft 220.

[0055] Furthermore, the driving device 270 is disposed on the outside of the cavity 210 and is connected in cooperation with the rotating component 240 to drive the rotating component 240 and the hollow stirring shaft 220 to rotate.

[0056] Similarly, to facilitate the rotation of the rotating component 240 by the drive device 270, the rotating component 240 is connected by a bearing. The outer shaft is connected to the bottom of the cavity 210, and the inner shaft is connected to the outer wall of the rotating component 240. The rotating component 240 is fixedly connected to the hollow stirring shaft 220 (the bearing is a sealed bearing). A wheel (gear, friction wheel, pulley, etc. can be used, but it must be compatible with the drive device 270) is provided at one end of the rotating component 240 that extends out of the bottom of the cavity 210. The rotation of the drive device 270 drives the rotating component 240 to rotate, thereby achieving the purpose of rotating the hollow stirring shaft 220 while keeping the cavity 210 stationary, and making the operation simpler and more convenient.

[0057] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mixing and dehumidifying integrated system for high-performance PVC-O pipe production, characterized in that, include: A storage silo containing PVC raw materials; A dehumidification integrated device, comprising a cavity, a hollow stirring shaft, and auxiliary devices, wherein the inlet of the cavity is connected to the outlet of the storage silo; The hollow stirring shaft is rotatably connected to the cavity, and the central axis of the hollow stirring shaft coincides with the central axis of the cavity. A blade is provided at one end of the outer surface of the hollow stirring shaft, which is used to stir the PVC raw material between the cavity and the hollow stirring shaft. A plurality of biomimetic micropores are arrayed on the sidewall of the hollow stirring shaft, which are used to deliver clean hot air between the cavity and the hollow stirring shaft. A double-helix channel is provided inside the hollow stirring shaft, which is used to deliver clean hot air and exhaust humid and hot waste gas. The auxiliary device is connected to one end of the double-helix channel to provide clean hot air. A kneading device, wherein the inlet of the kneading device is connected to the outlet of the cavity, is used to knead PVC raw materials.

2. The mixing and dehumidifying integrated system for high-performance PVC-O pipe production according to claim 1, characterized in that, It also includes a detection device, a drive device, and a main server. The detection device is located at one end of the feed inlet of the cavity and is used to acquire parameter information. The drive device is connected to the hollow stirring shaft and is used to drive the hollow stirring shaft to rotate. The main server includes an information receiving module and an instruction execution module. The information receiving module is used to receive parameter information and determine whether the parameter information is the same as the preset parameters. The instruction execution module is used to respond to the judgment result of the information receiving module and control the start and stop of the driving device and the auxiliary device.

3. The mixing and dehumidifying integrated system for high-performance PVC-O pipe production according to claim 1, characterized in that, The double-helix channel includes a fresh hot air channel and a humid heat exhaust channel, which are mirror-symmetrical and arranged in opposite spirals.

4. The high-performance PVC-O pipe production mixing and dehumidification integrated system as described in claim 3, characterized in that, The hot and humid exhaust channel is equipped with an inclined sintered filter screen, which is used to disperse the compressed gas into a uniform micro-flow.

5. The high-performance PVC-O pipe production mixing and dehumidification integrated system as described in claim 3, characterized in that, The auxiliary device includes a hot air generator, an exhaust unit, and an air supply unit. The hot air generator is connected to the inlet of the new hot air channel to provide clean hot air. The exhaust component is connected to the humid and hot exhaust channel and is used to remove humid and hot exhaust gas; the gas supply component is located on one side of the cavity and is connected to the hollow stirring shaft, and is used to supply inert gas into the hollow stirring shaft.

6. The high-performance PVC-O pipe production mixing and dehumidification integrated system as described in claim 5, characterized in that, The hollow stirring shaft is also equipped with a heat-conducting oil circulation pipe, which runs parallel to the fresh hot air channel. The inlet of the heat-conducting oil circulation pipe is connected to an oil pump installed on the outer wall of the cavity, and the outlet of the heat-conducting oil circulation pipe is connected to a heat exchanger installed on the outer wall of the cavity. The heat-conducting oil circulation pipe is used to collect the heat generated by the friction of the rotating blades.

7. The high-performance PVC-O pipe production mixing and dehumidification integrated system as described in claim 6, characterized in that, The outlet of the heat exchanger is connected to the inlet of the hot air generator.

8. The high-performance PVC-O pipe production mixing and dehumidification integrated system as described in claim 2, characterized in that, Rotating components are provided at both ends of the cavity and the hollow stirring shaft, which enable the hollow stirring shaft to rotate within the cavity.

9. The high-performance PVC-O pipe production mixing and dehumidification integrated system as described in claim 8, characterized in that, The driving device is located on the outside of the cavity and is connected to the rotating component to drive the rotating component and the hollow stirring shaft to rotate.

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