An extrusion granulation device for controlling temperature and moisture

Abstract

The present invention relates to the technical field of extrusion granulation equipment, and particularly to an extrusion granulation equipment for controlling temperature and moisture, which includes a feed hopper arranged on an extruder. A temperature and moisture control device is arranged above the feed hopper. The temperature and moisture control device includes a material containing component, a heating component and a detection component. The material containing component includes a horizontally arranged inner cylinder, an outer cylinder sleeved outside the inner cylinder and a driving motor for driving the inner cylinder to rotate inside the outer cylinder. Three material containing grooves which penetrate through the inner cylinder wall and are arranged at equal intervals are formed on the outer peripheral surface of the inner cylinder. An inner breathable porous plate is installed at the inner opening position of the material containing groove. The present invention makes the detection result have a smaller error, thus facilitating more precise control of the temperature and moisture of the material, ensuring that the material entering the extruder does not have the situation of unqualified water content and preheating temperature, improving the product quality, and at the same time realizing the quantitative conveying of the material, without the need to mix the material in proportion by weighing.

Description

Technical Field

[0001] The present invention relates to the technical field of extrusion granulation equipment, and particularly to an extrusion granulation equipment for controlling temperature and moisture. Background Art

[0002] The extrusion granulation equipment mainly consists of three parts: an extruder, a cooling tank, and a pelletizer. Among them, the extruder heats and melts the raw materials and extrudes them into a strip. After the strip is cooled and solidified in the cooling tank, it enters the pelletizer for pelletizing, completing the production of raw materials into granular products.

[0003] Currently, since the raw materials have a water washing step before feeding, even though they are dried later, they will still contain a certain amount of moisture due to environmental factors during storage. Therefore, before the raw materials enter the extruder, they usually need to be heated and dried, and at the same time, the raw materials are preheated.

[0004] The Chinese utility model patent with the publication number CN210759105U discloses a continuous drying conveyor for a plastic granulation system, including a workbench, a conveying unit, heating wires, and a discharge frame; Workbench: Two fixing plates are correspondingly arranged on the front and rear sides of the upper surface of the workbench, and temperature sensors are correspondingly arranged inside both fixing plates; Conveying unit: The conveying unit includes a stainless steel conveyor belt and driving wheels. The number of driving wheels is two, and both driving wheels are correspondingly rotatably connected between the two fixing plates through bearings. The stainless steel conveyor belt is correspondingly arranged on the driving wheels. One end of one of the driving wheels is provided with a driving unit, and the driving unit is located outside the fixing plate; Heating wires: The heating wires are arranged between the two fixing plates at a position inside the stainless steel conveyor belt; This continuous drying conveyor for a plastic granulation system can continuously provide dried raw materials for a plastic extruder. At the same time, it can save manpower and space.

[0005] Although the above continuous drying conveyor can achieve drying of raw materials and preheating temperature control of raw materials, there are still the following deficiencies in the use process:

[0006] During the process of transporting raw materials through the conveying unit, although the heating wires can dry the raw materials, they cannot monitor the specific drying situation of the raw materials. In other words, the above continuous drying conveyor only has the function of drying in form, but cannot monitor the specific drying state of the raw materials. Once the moisture in the raw materials is not dried, then as the raw materials enter the inside of the extruder, the undried moisture will vaporize in the high-temperature environment inside the extruder. On the one hand, it will have an adverse impact on the extruder itself. More importantly, it will cause a large number of bubbles in the extruded strip, and even the strip may break and be discontinuous at the discharge port of the extruder, seriously affecting the quality of the product.

[0007] Therefore, an extrusion granulation device capable of controlling temperature and moisture is designed. Summary of the Invention

[0008] The purpose of the present invention is to provide an extrusion granulation device capable of controlling temperature and moisture to solve the problems raised in the above background technology. The extrusion granulation device capable of controlling temperature and moisture has the characteristics of an extrusion granulation device capable of controlling temperature and moisture.

[0009] To achieve the above purpose, the present invention provides the following technical solutions:

[0010] An extrusion granulation device capable of controlling temperature and moisture includes a feed hopper arranged on an extruder, and a temperature and moisture control device is arranged above the feed hopper. The temperature and moisture control device includes:

[0011] A material containing component, the material containing component includes a horizontally arranged inner cylinder, an outer cylinder sleeved outside the inner cylinder, and a driving motor for driving the inner cylinder to rotate inside the outer cylinder. Three material containing grooves are arranged on the outer peripheral surface of the inner cylinder at equal intervals through the inner cylinder wall. Feeding holes, detection holes, and discharging holes are respectively arranged on the outer peripheral surface of the outer cylinder corresponding to the three material containing grooves. An inner air-permeable porous plate is installed at the inner opening position of the material containing groove, and an outer air-permeable porous plate is arranged inside the detection hole. The inner air-permeable porous plate and the outer air-permeable porous plate cooperate to form a detection channel that is air-permeable but impermeable to materials between the material containing grooves therebetween;

[0012] A heating component, the heating component includes heating rods installed in the inner cavity of the inner cylinder to heat the air entering the detection channel; and

[0013] A detection component, the detection component includes a housing and an air temperature and humidity sensor installed inside the housing. One end of the housing is communicated with the detection hole, and the other end of the housing is communicated with an air extraction device. The air passing through the detection channel is detected by the air temperature and humidity sensor;

[0014] Among them, the detection component further includes a sealing mechanism for improving the detection accuracy.

[0015] Preferably, the sealing mechanism includes an outer sliding frame fixed on the outer cylinder and an elastic member arranged on the outer sliding frame;

[0016] The outer sliding frame surrounds the opening at the end of the detection hole far from the axis of the outer cylinder, and one end of the housing is slidably connected inside the outer sliding frame through the elastic member;

[0017] The outer air-permeable porous plate includes an inner rubber plate and an outer metal plate. The outer metal plate is fixedly connected to one end of the housing, the inner rubber plate is fixed on the side surface of the outer metal plate close to the inner cylinder, and the edge part of the inner rubber plate is pressed against the outer peripheral surface of the inner cylinder under the elastic force of the elastic member.

[0018] Preferably, the sealing mechanism further includes a driving part which can drive the inner rubber plate not to contact the outer peripheral surface of the inner cylinder when the material containing groove is not aligned with the detection hole;

[0019] There are two driving parts which are respectively located at two axial ends of the inner cylinder;

[0020] The driving part includes a driving ring, a support rod and a roller. The driving ring is fixed on the end face of the inner cylinder, and three arc-shaped grooves are arranged at equal intervals on the outer peripheral surface of the driving ring. One end of the support rod is fixed on the outer shell, the roller is rotatably connected to the other end of the support rod, and the roller is in rolling connection with the outer peripheral surface of the driving ring;

[0021] When the roller rolls into the arc-shaped groove, the material containing groove is aligned with the detection hole, and the inner rubber plate is pressed against the outer peripheral surface of the inner cylinder under the elastic force of the elastic part.

[0022] Preferably, the elastic part includes a fixed block fixedly connected with the outer sliding frame, a sliding groove opened on one side surface of the fixed block, a slider slidably connected inside the sliding groove and a spring arranged inside the sliding groove. The slider is fixedly connected with the outer shell, and the spring pushes the slider towards the inner cylinder.

[0023] Preferably, feeding cylinders and discharging cylinders are respectively fixed at the outer openings of the feeding hole and the discharging hole, and a gate assembly for opening and closing the feeding hole is arranged on the feeding cylinder.

[0024] Preferably, the gate assembly includes a gate plate slidably arranged inside the feeding hole and a telescopic cylinder for driving the gate plate to slide horizontally.

[0025] Preferably, a stabilizing frame is fixedly connected to the outer side surface of the feeding cylinder. The gate plate penetrates through the stabilizing frame, and one end of the gate plate is fixedly connected with the piston rod of the telescopic cylinder through a connecting frame.

[0026] Preferably, a supporting shaft is fixed on the inner cylinder, and the supporting shaft is used for supporting the gate plate.

[0027] Preferably, the heating assembly further includes an intermediate cylinder and two sealing plates fixed at both ends of the intermediate cylinder;

[0028] The edge part of the sealing plate is hermetically connected with the inner surface of the inner cylinder. Three strip-shaped holes are opened on the outer peripheral surface of the intermediate cylinder, and three partition plates are fixed on the outer peripheral surface of the intermediate cylinder. The three partition plates divide the gap between the intermediate cylinder and the inner surface of the inner cylinder into three independent chambers. The heating rods are installed inside the intermediate cylinder. The three chambers are respectively communicated with the inner cavity of the intermediate cylinder through the three strip-shaped holes, and the three chambers are respectively communicated with the three material containing grooves;

[0029] The mounting seat of the heating rod is rotationally and hermetically connected to one of the sealing plates through a mechanical seal, and the output shaft of the driving motor is fixedly connected to the other sealing plate.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. In the present invention, since the material located at the detection station forms a tight material layer under the limitation of the inner air-permeable porous plate and the outer air-permeable porous plate, the heated air can fully and thoroughly contact the material, and then the heat and water content in the gas entering the housing and detected by the air temperature and humidity sensor are closer to the true heat and water content of the material, resulting in a smaller error in the detection result. Thus, it is convenient to more precisely control the temperature and moisture of the material, ensuring that the material entering the extruder does not have the situation of unqualified water content and preheating temperature, improving the product quality. Moreover, since the sizes of the three material storage tanks are equal and the weights of the materials they can accommodate are basically equal, quantitative conveying of the material is realized, and there is no need to use a weighing method to mix the materials in proportion.

[0032] 2. In the present invention, the outer metal plate is fixedly connected to one end of the housing, and then the elastic force of the elastic member is used to press one end of the housing tightly around the opening at the end of the detection hole far from the axis of the outer cylinder, thereby blocking the communication between the gap between the inner cylinder and the outer cylinder and the material storage tank at the detection station. As a result, the gas entering the interior of the housing is completely the gas that has passed through the material inside the detection station, further improving the accuracy of the detection result and facilitating the precise control of the temperature and water content of the material.

[0033] 3. In the present invention, through the provided driving part, the arc-shaped groove on the surface of the driving ring is used in cooperation with the roller connected to the housing. When the roller rolls into the interior of the arc-shaped groove, the inner rubber plate is pressed tightly against the outer peripheral surface of the inner cylinder under the elastic force of the elastic member, and at this time, the temperature and humidity of the material can be detected. When the roller rolls out of the interior of the arc-shaped groove, the inner rubber plate is separated from the outer peripheral surface of the inner cylinder, reducing the wear of the inner rubber plate, extending the maintenance cycle of the device, reducing the maintenance cost, and at the same time reducing the rotational resistance of the inner cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is the overall structural schematic diagram of the present invention;

[0035] Figure 2 is the overall structural schematic diagram of the side of the driving motor of the present invention;

[0036] Figure 3 is the structural schematic diagram of the housing of the present invention

[0037] Figure 4 is the structural schematic diagram of the inner cylinder of the present invention;

[0038] Figure 5 Structural schematic diagram of the heating component of the present invention;

[0039] Figure 6 Side view structural schematic diagram of the middle cylinder of the present invention;

[0040] Figure 7 Structural schematic diagram of the outer cylinder of the present invention;

[0041] Figure 8 Structural schematic diagram when the gate of the present invention is closed;

[0042] Figure 9 Structural schematic diagram when the gate of the present invention is opened;

[0043] Figure 10 Sectional perspective structural schematic diagram of the outer shell of the present invention;

[0044] Figure 11 Sectional structural schematic diagram of the outer shell of the present invention;

[0045] Figure 12 For the present invention Figure 11 Enlarged structural schematic diagram at position A in;

[0046] Figure 13 Structural schematic diagram of the elastic member of the present invention;

[0047] Figure 14 Structural schematic diagram of the driving part of the present invention.

[0048] In the figure:

[0049] 10. Feed hopper;

[0050] The material containing assembly includes: 21. Inner cylinder; 211. Material containing groove; 22. Outer cylinder; 221. Feeding hole; 222. Detection hole; 223. Discharging hole; 224. Feeding cylinder; 225. Discharging cylinder; 23. Inner breathable porous plate; 24. Outer breathable porous plate; 241. Inner rubber plate; 242. Outer metal plate; 25. Driving motor;

[0051] The heating assembly includes: 31. Heating rod; 311. Mounting seat; 32. Sealing plate; 33. Middle cylinder; 331. Strip-shaped hole; 34. Partition board;

[0052] The detection assembly includes: 41. Outer shell; 42. Air temperature and humidity sensor; 43. Outer sliding frame; 44. Elastic member; 441. Fixed block; 4411. Sliding groove; 442. Spring; 443. Slider; 45. Driving part; 451. Driving ring; 4511. Arc-shaped groove; 452. Connecting member; 453. Support rod; 454. Roller;

[0053] The gate assembly includes: 51, the gate plate; 52, the telescopic cylinder; 53, the connecting frame; 54, the stabilizing frame; 55, the support shaft;

[0054] 6. The fixed frame. Specific embodiments

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] Please refer to Figures 1-14 , the present invention provides a technical solution:

[0057] An extrusion granulation device for controlling temperature and moisture, the extrusion granulation device includes an extruder, a cooling tank and a pelletizer. The main function of the extrusion granulation device is to combine granular raw materials of two or more colors to form another color of granules, or to dye the granular raw materials to meet the actual production requirements. The extruder therein is used to mix and heat-melt the raw materials, and then extrude the material strip. The material strip is cooled and solidified through a cooling tank (usually a water-cooled tank), and then cut into granules of a size that meets the requirements by the pelletizer.

[0058] The extruder is provided with a feed hopper 10 for feeding. Above the feed hopper 10, a temperature and moisture control device is provided to control the temperature and moisture content of the granular raw materials entering the feed hopper 10 and prevent raw materials with excessive moisture content from entering the feed hopper 10.

[0059] Specifically, as Figures 1-14 shown, the temperature and moisture control device includes a material containing component, a heating component and a detection component. The material containing component is used to contain the granular raw materials. The heating component heats the air in the raw materials that are about to enter the interior of the material containing component. The heated air flows through the voids in the raw materials and then enters the interior of the detection component, so that the temperature and humidity of the raw materials can be measured. After the temperature and humidity of the raw materials reach the standard, they are then put into the interior of the feed hopper 10.

[0060] As Figure 1 and Figure 2As shown in the figure, the material storage assembly includes a horizontally arranged inner cylinder 21, an outer cylinder 22 sleeved outside the inner cylinder 21, and a driving motor 25 for driving the inner cylinder 21 to rotate inside the outer cylinder 22. The driving motor 25 can be a stepping motor. Among them, the wall thickness of the inner cylinder 21 is relatively thick, while the wall thickness of the outer cylinder 22 is relatively thin. After the outer cylinder 22 is sleeved onto the inner cylinder 21, the gap between the outer peripheral surface of the inner cylinder 21 and the inner peripheral surface of the outer cylinder 22 is smaller than the diameter of the granular raw material, so as to prevent the raw material from falling into the gap between the outer peripheral surface of the inner cylinder 21 and the inner peripheral surface of the outer cylinder 22.

[0061] As Figure 4 shown, three material storage grooves 211 penetrating the wall of the inner cylinder 21 and arranged at equal distances are provided on the outer peripheral surface of the inner cylinder 21. As Figure 7 shown, a feeding hole 221, a detection hole 222, and a discharging hole 223 are respectively provided on the outer peripheral surface of the outer cylinder 22 corresponding to the three material storage grooves 211. The feeding hole 221, the detection hole 222, and the discharging hole 223 correspond to the feeding station, the detection station, and the discharging station respectively. An inner breathable porous plate 23 is installed at the inner opening position of the material storage groove 211, and an outer breathable porous plate 24 is arranged inside the detection hole 222. The inner breathable porous plate 23 and the outer breathable porous plate 24 cooperate to form a detection channel that is breathable but impermeable to materials between the two, that is, the pore diameters of both the inner breathable porous plate 23 and the outer breathable porous plate 24 are smaller than the diameter of the material to prevent the material from passing through the small holes on the inner breathable porous plate 23 and / or the outer breathable porous plate 24.

[0062] During actual use, the feeding hole 221 at the feeding station is used to add raw materials into the material storage groove 211. After completion, the driving motor 25 is started to drive the inner cylinder 21 to rotate, and the above-mentioned material storage groove 211 filled with raw materials is rotated and conveyed to the detection station for detection. After the detection result is qualified, the driving motor 25 is used to rotate and convey the qualified material to the discharging station, and the qualified raw material is put into the interior of the feed hopper 10 through the discharging hole 223 at the discharging station.

[0063] As Figure 5 and Figure 6 shown, the heating assembly includes a heating rod 31 installed in the inner cavity of the inner cylinder 21. The heating rod 31 can heat the air entering the detection channel. On the one hand, the heated air can preheat the material. On the other hand, the heated air can also accelerate the evaporation of the moisture on the surface of the material and be discharged from the raw material along with the flow of the heated air, reducing the moisture content of the raw material.

[0064] As Figures 1 to 3As shown, the detection component includes a housing 41 and an air temperature and humidity sensor 42 installed inside the housing 41. Along the direction gradually away from the detection hole 222, the cross-sectional area of the inner cavity of the housing 41 gradually decreases. One end of the housing 41 is communicated with the detection hole 222, and the other end of the housing 41 is communicated with the air extraction device. The air passing through the detection channel is detected by the air temperature and humidity sensor 42. In actual use, when the material enters the detection station, the air extraction device is started, so that the air heated by the heating rod 31 enters the interior of the material. While preheating the material, it will also take away the moisture in the material. The hot air passes through the material and then enters the interior of the housing 41, and then the air temperature and humidity sensor 42 is used to detect the temperature and humidity in the air. The air temperature and humidity sensor 42 can adopt the HC2A-S environmental air temperature and humidity sensor of Rotronic in Switzerland.

[0065] The actual working process of the above solution is as follows: First, the driving motor 25 is used to drive the inner cylinder 21 to rotate, align the feeding hole 221, the detection hole 222, and the discharging hole 223 with the three material storage grooves 211 respectively. Then, the material enters the interior of the material storage groove 211 aligned with the feeding hole 221 through the feeding hole 221 and fills the material storage groove 211. Then, the driving motor 25 is used to drive the inner cylinder 21 to rotate, and the material at the feeding station is conveyed to the position of the detection station. The driving motor 25 is turned off, and then the air extraction device is started. The air heated by the heating rod 31 passes through the inner air-permeable porous plate 23 and enters the interior of the material under the action of the air extraction device. While preheating the material, it will also take away the moisture in the material. Then, the air taking away the moisture in the material will pass through the outer air-permeable porous plate 24 and enter the interior of the housing 41. The air temperature and humidity sensor 42 collects the temperature data and humidity data in the air, converts the temperature data and humidity data into electrical signals and then transmits them to the interface part of the single-chip microcomputer. After receiving the electrical signal, the single-chip microcomputer processes and analyzes it. The specific processing and analysis steps are that the single-chip microcomputer judges the temperature and humidity data contained in the electrical signal. If the temperature and humidity data fed back by the air temperature and humidity sensor 42 meet the actual requirements, the single-chip microcomputer controls the start of the driving motor 25, and conveys the material at the detection station to the discharging station. The material conveyed to the discharging station will fall into the interior of the feeding hopper 10 under the action of gravity, and then enter the interior of the extruder from the feeding hopper 10 to start subsequent operations such as melting and extrusion; if the temperature and humidity data fed back by the air temperature and humidity sensor 42 do not meet the actual requirements, the single-chip microcomputer will not start the driving motor 25, but continue to judge the electrical signal fed back by the air temperature and humidity sensor 42 until the temperature and humidity data fed back by the air temperature and humidity sensor 42 meet the actual requirements, and then the single-chip microcomputer controls the start of the driving motor 25 to convey the material at the detection station to the discharging station.

[0066] The beneficial effects of the above solution are as follows: By providing the inner cylinder 21 and the outer cylinder 22, and enabling the inner cylinder 21 to rotate within the outer cylinder 22, the three material storage grooves 211 can cycle among the feeding, detection, and discharging stations, which not only ensures the working efficiency but also reduces the volume of the entire device. At the same time, since the material at the detection station forms a tight material layer under the limitation of the inner air-permeable porous plate 23 and the outer air-permeable porous plate 24, the heated air can fully and thoroughly contact the material, and then the heat and water content in the gas entering the housing 41 and detected by the air temperature and humidity sensor 42 are closer to the true heat and water content of the material, resulting in a smaller error in the detection result. Thus, it is convenient to more precisely control the temperature and moisture of the material, ensuring that the material entering the extruder meets the moisture standard, improving the product quality. Moreover, since the three material storage grooves 211 are of equal size and can hold approximately equal weights of material, quantitative feeding of the material is achieved, eliminating the need to weigh and mix the material proportionally.

[0067] Since there is a gap between the outer peripheral surface of the inner cylinder 21 and the inner peripheral surface of the outer cylinder 22, during the startup of the air extraction device, a certain amount of air will enter the interior of the housing 41 through the gap between the inner cylinder 21 and the outer cylinder 22. Therefore, to improve the detection accuracy, the detection component of this embodiment further includes a sealing mechanism for improving the detection accuracy.

[0068] As Figure 10 shown, the sealing mechanism includes an outer sliding frame 43 fixed to the outer cylinder 22 and an elastic member 44 provided on the outer sliding frame 43; as Figure 10 and Figure 11 shown, the outer sliding frame 43 surrounds the opening at the end of the detection hole 222 far from the axis of the outer cylinder 22, and one end of the housing 41 is slidably connected to the interior of the outer sliding frame 43 through the elastic member 44, and the elastic force of the elastic member 44 can push one end of the housing 41 to tightly press against the outer peripheral surface of the inner cylinder 21.

[0069] As Figure 12 shown, the outer air-permeable porous plate 24 includes an inner rubber plate 241 and an outer metal plate 242. The outer metal plate 242 is fixedly connected to one end of the housing 41, and the inner rubber plate 241 is fixed to the side of the outer metal plate 242 close to the inner cylinder 21. The edge portion of the inner rubber plate 241 is tightly pressed against the outer peripheral surface of the inner cylinder 21 under the elastic force of the elastic member 44, that is, the edge portion of the inner rubber plate 241 is tightly pressed against the periphery of the opening at the end of the detection hole 222 far from the axis of the outer cylinder 22. In this case, the communication between the gap between the inner cylinder 21 and the outer cylinder 22 and the material storage groove 211 at the detection station is blocked, so that the gas entering the interior of the housing 41 is completely the gas that has passed through the material inside the detection station, and the heat and water content in this gas refer to the temperature and water content of the material at the detection station.

[0070] By fixedly connecting the outer metal plate 242 to one end of the outer shell 41, and then using the elastic force of the elastic member 44 to enable one end of the outer shell 41 to be pressed tightly around the opening at the end of the detection hole 222 far from the axis of the outer cylinder 22, the communication between the gap between the inner cylinder 21 and the outer cylinder 22 and the material-containing groove 211 at the detection station can be blocked, so that the gas entering the interior of the outer shell 41 is completely the gas that has passed through the material inside the detection station, thereby further improving the accuracy of the detection result and facilitating the precise control of the temperature and moisture content of the material.

[0071] As Figure 14 shown, the sealing mechanism further includes a driving part 45. The driving part 45 can drive the inner rubber plate 241 not to contact the outer peripheral surface of the inner cylinder 21 when the material-containing groove 211 is not aligned with the detection hole 222. There are two driving parts 45, which are respectively located at the two axial ends of the inner cylinder 21, so that the outer shell 41 can be evenly pushed, that is, the driving force received by the outer shell 41 is uniform, preventing the outer shell 41 from being stuck due to only one end being pushed.

[0072] As Figure 14 shown, the driving part 45 includes a driving ring 451, a support rod 453 and a roller 454. The driving ring 451 is fixed on the end face of the inner cylinder 21 through a connecting member 452. Three arc-shaped grooves 4511 arranged at equal distances are formed on the outer peripheral surface of the driving ring 451. One end of the support rod 453 is fixed on the outer shell 41, and the roller 454 is rotatably connected to the other end of the support rod 453. The roller 454 is in rolling connection with the outer peripheral surface of the driving ring 451.

[0073] When the roller 454 rolls into the interior of the arc-shaped groove 4511, the material-containing groove 211 at the detection station is aligned with the detection hole 222, and the inner rubber plate 241 is pressed tightly against the outer peripheral surface of the inner cylinder 21 under the elastic force of the elastic member 44. At this time, since the communication between the gap between the inner cylinder 21 and the outer cylinder 22 and the material-containing groove 211 at the detection station is blocked, the temperature and humidity of the material can be detected, and the detection result has high accuracy; when the roller 454 rolls out of the interior of the arc-shaped groove 4511, that is, when the roller 454 contacts the outer peripheral surface of the driving ring 451, at this time, the outer peripheral surface of the driving ring 451 supports the roller 454. At this time, the inner rubber plate 241 overcomes the elastic force of the elastic member 44, so that the inner rubber plate 241 is separated from the outer peripheral surface of the inner cylinder 21. At this time, since the inner rubber plate 241 does not contact the inner cylinder 21, the wear of the inner rubber plate 241 can be reduced, and at the same time, the rotational resistance of the inner cylinder 21 is also reduced.

[0074] Through the provided driving part 45, the arc-shaped groove 4511 on the surface of the driving ring 451 cooperates with the roller 454 connected to the outer shell 41, so that when the roller 454 rolls into the interior of the arc-shaped groove 4511, the inner rubber plate 241 is pressed against the outer peripheral surface of the inner cylinder 21 under the elastic force of the elastic member 44. At this time, the temperature and humidity of the material can be detected. When the roller 454 rolls out of the interior of the arc-shaped groove 4511, the inner rubber plate 241 is separated from the outer peripheral surface of the inner cylinder 21, reducing the wear of the inner rubber plate 241, extending the maintenance cycle of the device, reducing the maintenance cost, and at the same time reducing the rotation resistance of the inner cylinder 21.

[0075] In this embodiment, the distance between the inner rubber plate 241 and the outer peripheral surface of the inner cylinder 21 is within the range of 0 - 0.5 mm. That is, when the inner rubber plate 241 contacts the inner cylinder 21, the distance between them is 0. When the inner rubber plate 241 is pushed away from the inner cylinder 21 under the action of the driving part 45, the maximum distance between the inner rubber plate 241 and the inner cylinder 21 is 0.5 mm.

[0076] As Figure 13 shown, the elastic member 44 includes a fixed block 441 fixedly connected to the outer sliding frame 43, a sliding groove 4411 opened on one side surface of the fixed block 441, a slider 443 slidably connected inside the sliding groove 4411, and a spring 442 arranged inside the sliding groove 4411. The slider 443 is fixedly connected to the outer shell 41. The slider 443 cooperating with the sliding groove 4411 can achieve the stable sliding of the outer shell 41. The spring 442 pushes the slider 443 towards the inner cylinder 21.

[0077] As Figure 1 and Figure 2 shown, feeding cylinders 224 and discharging cylinders 225 are respectively fixed at the outer openings of the feeding hole 221 and the discharging hole 223. The feeding cylinder 224 facilitates the gathering of materials into the material receiving groove 211 located at the feeding station, and the discharging cylinder 225 is used to accurately guide the materials located at the discharging station into the feeding hopper 10.

[0078] As Figure 1 、 Figure 2 、 Figure 8 and Figure 9 shown, a gate assembly for opening and closing the feeding hole 221 is arranged on the feeding cylinder 224. This gate assembly is used to control the on-off between the feeding cylinder 224 and the material receiving groove 211 located at the feeding station.

[0079] Specifically, the gate assembly includes a gate plate 51 slidably arranged inside the feeding hole 221 and a telescopic cylinder 52 for driving the gate plate 51 to slide horizontally. The telescopic cylinder 52 can be one of an electric push rod, a cylinder, and an oil cylinder. The telescopic cylinder 52 can drive the gate plate 51 to move horizontally to open or close the material receiving groove 211 located at the feeding station.

[0080] A stabilizing frame 54 is fixedly connected to the outer side surface of the feeding cylinder 224. The shutter 51 penetrates through the stabilizing frame 54. The stabilizing frame 54 can provide a stable slideway for the lateral movement of the shutter 51, and one end of the shutter 51 is fixedly connected to the piston rod of the telescopic cylinder 52 through a connecting frame 53.

[0081] As Figure 4 shown, a support shaft 55 is fixed on the inner cylinder 21. During the lateral movement of the shutter 51, the support shaft 55 can support the shutter 51 to prevent the shutter 51 from bending and deforming.

[0082] In actual use, under normal conditions, the shutter 51 is in a closed state. At this time, materials are piled up on the top of the shutter 51. When it is necessary to add materials to the material receiving groove 211 located at the feeding station, the single-chip microcomputer starts the telescopic cylinder 52 to push the shutter 51 to open. At this time, the materials piled up on the shutter 51 will quickly fill the material receiving groove 211 located at the feeding station. Then, the telescopic cylinder 52 is started again to drive the shutter 51 to close, and thus the feeding operation of the material receiving groove 211 located at the feeding station is completed.

[0083] As Figure 5 and Figure 6 shown, the heating assembly further includes an intermediate cylinder 33 and two sealing plates 32 fixed at both ends of the intermediate cylinder 33. The edge part of the sealing plate 32 is hermetically connected to the inner surface of the inner cylinder 21. Three strip-shaped holes 331 are formed on the outer peripheral surface of the intermediate cylinder 33, and three partition plates 34 are fixed on the outer peripheral surface of the intermediate cylinder 33. The three partition plates 34 divide the gap between the intermediate cylinder 33 and the inner surface of the inner cylinder 21 into three independent chambers. The heating rod 31 is installed inside the intermediate cylinder 33. The three chambers are respectively communicated with the inner cavity of the intermediate cylinder 33 through the three strip-shaped holes 331, and the three chambers are respectively communicated with the three material receiving grooves 211. The purpose of such a setting is to enable the air entering the interior of the detection station to be fully heated by the heating rod 31. At the same time, the cooperation of the sealing plate 32, the intermediate cylinder 33, and the partition plate 34 can also improve the structural strength of the inner cylinder 21.

[0084] As Figure 1 and Figure 2 shown, the mounting seat 311 of the heating rod 31 is rotationally and hermetically connected to one of the sealing plates 32 through mechanical sealing. In this way, it can prevent the heating rod 31 from rotating together with one of the sealing plates 32, simplifying the power supply structure of the heating rod 31. The output shaft of the driving motor 25 is fixedly connected to the other sealing plate 32. The mounting seat 311, the driving motor 25, the telescopic cylinder 52, and the outer cylinder 22 are all fixedly installed on the fixing frame 6. In actual use, the fixing frame can be installed at a suitable position to ensure that the positions of the mounting seat 311, the driving motor 25, the telescopic cylinder 52, and the outer cylinder 22 will not change during use.

[0085] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion granulation device for controlling temperature and moisture, including a feed hopper arranged on an extruder, characterized in that, A temperature and water control device is provided above the feeding hopper. The temperature and water control device includes: a material containing component, which includes a horizontally arranged inner cylinder, an outer cylinder sleeved outside the inner cylinder, and a driving motor for driving the inner cylinder to rotate inside the outer cylinder. Three material containing grooves are provided on the outer peripheral surface of the inner cylinder, penetrating through the inner cylinder wall and arranged at equal intervals. Feeding holes, detection holes, and discharging holes are respectively provided on the outer peripheral surface of the outer cylinder corresponding to the three material containing grooves. An inner breathable porous plate is installed at the inner opening position of the material containing groove, and an outer breathable porous plate is arranged inside the detection hole. The inner breathable porous plate and the outer breathable porous plate cooperate to form a detection channel that is breathable but impermeable to materials between the two material containing grooves; a heating component, which includes a heating rod installed in the inner cavity of the inner cylinder to heat the air entering the detection channel; and a detection component, which includes a housing and an air temperature and humidity sensor installed inside the housing. One end of the housing is communicated with the detection hole, and the other end of the housing is communicated with an air extraction device. The air passing through the detection channel is detected by the air temperature and humidity sensor; wherein, the detection component further includes a sealing mechanism for improving the detection accuracy; the sealing mechanism includes an outer sliding frame fixed on the outer cylinder and an elastic member arranged on the outer sliding frame; the outer sliding frame surrounds the opening at the end of the detection hole away from the axis of the outer cylinder, and one end of the housing is slidably connected inside the outer sliding frame through the elastic member; the outer breathable porous plate includes an inner rubber plate and an outer metal plate. The outer metal plate is fixedly connected with one end of the housing, and the inner rubber plate is fixed on the side surface of the outer metal plate close to the inner cylinder. The edge part of the inner rubber plate is pressed against the outer peripheral surface of the inner cylinder under the elastic force of the elastic member; the sealing mechanism further includes a driving part, which can drive the inner rubber plate not to contact the outer peripheral surface of the inner cylinder when the material containing groove is not aligned with the detection hole; two driving parts are provided and are respectively located at both axial ends of the inner cylinder; the driving part includes a driving ring, a support rod, and a roller. The driving ring is fixed on the end surface of the inner cylinder, and three arc-shaped grooves are arranged at equal intervals on the outer peripheral surface of the driving ring. One end of the support rod is fixed on the housing, and the roller is rotatably connected to the other end of the support rod. The roller is in rolling connection with the outer peripheral surface of the driving ring; when the roller rolls into the arc-shaped groove, the material containing groove is aligned with the detection hole, and the inner rubber plate is pressed against the outer peripheral surface of the inner cylinder under the elastic force of the elastic member; the elastic member includes a fixed block fixedly connected with the outer sliding frame, a sliding groove opened on one side surface of the fixed block, a slider slidably connected inside the sliding groove, and a spring arranged inside the sliding groove. The slider is fixedly connected with the housing, and the spring pushes the slider towards the inner cylinder.

2. The extrusion granulation equipment for controlling temperature and moisture according to claim 1, characterized in that: Feeding cylinders and discharging cylinders are respectively fixed at the outer openings of the feeding hole and the discharging hole, and a gate component for opening and closing the feeding hole is arranged on the feeding cylinder.

3. The extrusion granulation device for controlling temperature and moisture according to claim 2, wherein: The gate component includes a gate plate slidably arranged inside the feeding hole and a telescopic cylinder for driving the gate plate to slide horizontally.

4. The extrusion granulation equipment for controlling temperature and moisture according to claim 3, characterized in that: A stabilizing frame is fixedly connected to the outer side surface of the feeding cylinder. The gate plate penetrates through the stabilizing frame, and one end of the gate plate is fixedly connected with the piston rod of the telescopic cylinder through a connecting frame.

5. The extrusion granulation equipment for controlling temperature and moisture according to claim 4, characterized in that: A support shaft is fixed on the inner cylinder, and the support shaft is used to support the gate plate.

6. The extrusion granulation equipment for controlling temperature and moisture according to claim 1, wherein: The heating assembly further includes an intermediate cylinder and two sealing plates fixed at both ends of the intermediate cylinder; The edge part of the sealing plate is hermetically connected to the inner surface of the inner cylinder. Three strip-shaped holes are formed on the outer peripheral surface of the intermediate cylinder, and three partition plates are fixed on the outer peripheral surface of the intermediate cylinder. The three partition plates divide the gap between the intermediate cylinder and the inner surface of the inner cylinder into three independent chambers. The heating rods are installed inside the intermediate cylinder. The three chambers are respectively communicated with the inner cavity of the intermediate cylinder through the three strip-shaped holes, and the three chambers are respectively communicated with the three material storage grooves; The mounting seat of the heating rod is rotationally and hermetically connected to one of the sealing plates through a mechanical seal, and the output shaft of the driving motor is fixedly connected to the other sealing plate.

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