Automatic plastic particle drying device
By using humidity sensors and dynamically controlling the heat air source and transmission belt speed in the plastic particle drying device, the problem of difficult to adjust the drying speed in the prior art is solved, and efficient and precise drying of plastic particles is achieved, and energy consumption is reduced.
Patent Information
- Application Number
- CN202421148212.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In existing plastic pellet drying equipment, the drying speed is difficult to adjust, making it difficult to grasp the drying progress, rework or consume too much energy.
An automatic drying device for plastic particles including a shell, feed port, discharge port, air inlet and hot air source is designed. It adopts a conveying device of a driving motor and a transmission belt, and is equipped with a humidity sensor to dynamically adjust the temperature of the hot air source and the transmission belt. Speed to achieve uniform drying of plastic particles.
Through real-time monitoring and control of humidity sensors, the drying progress can be accurately adjusted, rework, energy consumption, and drying efficiency can be improved.
Smart Images
Figure CN222270894U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic drying, and in particular relates to an automatic drying device for plastic particles. Background Art
[0002] Plastic is a solid material made of polymers as basic components and additives, which is processed and molded or cross-linked and cured under certain temperature and pressure. In the processing and production of plastic materials in the prior art, it is necessary to dry the molded plastic particles to remove residual moisture on their surface and improve the structural stability of the plastic particles.
[0003] For example, Chinese utility model patent CN214065639U discloses a rapid dehumidification dryer for plastics, comprising a base and a box body; the box body is fixedly mounted on the base, and two groups of inclined plates are arranged in the vertical direction in the box body, and the two groups of inclined plates are arranged alternately; a first gap for plastic materials to pass through is left between the side of each group of inclined plates close to the other group of inclined plates and the side wall of the box body, the first gaps located in the two groups of inclined plates are respectively located on the opposite sides of the box body, and the first gaps located in each inclined plate are respectively close to the lower side of the inclined plate; a feed inlet is provided on the top wall of the box body, a discharge outlet is provided on the bottom wall of the box body, a first air supply outlet is provided on the bottom wall of the box body, and a first hot air blower that supplies air to the inside of the first air supply outlet is fixedly provided on the outside of the box body; when the utility model is used, plastic particles enter the box body from the feed inlet, roll on the inclined plates and fall to the discharge outlet, and are dried by the hot air blown out of the air supply outlet during the rolling process.
[0004] However, in the above utility model patent, the rolling speed of the plastic particles in the box depends on the inclination angle of the inclined plate, which makes it difficult to control the rolling speed of the plastic particles from the outside, and thus difficult to control the drying progress of the plastic particles. When the degree of drying is not enough, rework is required, and when the degree of drying is too high, energy is consumed, which is not convenient to use. Utility Model Content
[0005] The purpose of the utility model is to provide an automatic drying device for plastic particles, aiming to solve the technical problems in the prior art that "the drying speed of plastic particles is difficult to adjust, making it difficult to grasp the drying progress of plastic particles, requiring rework when the drying degree is insufficient, or consuming energy when the drying degree is too high".
[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides an automatic drying device for plastic particles, which is used for drying plastic particles and includes a shell; a feed port, a discharge port and an air inlet are provided on the shell, and a hot air source connected to the air inlet is provided outside the shell; a conveying device is provided inside the shell, and the conveying device includes a driving motor, a transmission wheel and a transmission belt; the driving motor is used to drive the transmission wheel to rotate, and the rotation of the transmission wheel drives the transmission belt to rotate, and when the transmission belt rotates, the plastic particles can be conveyed from the feed port to the discharge port; the air inlet corresponds to the rotation direction of the transmission belt; a number of humidity sensors are evenly distributed in the middle and tail of the conveying device, and the humidity sensors are used to detect the surface humidity of the plastic particles to obtain their drying conditions.
[0007] Optionally, the conveying device consists of a first conveying group and a second conveying group; the first conveying group is arranged above the second conveying group; the hot air source consists of a first hot air source and a second hot air source, the first hot air source is used to provide hot air to the first conveying group, and the second hot air source is used to provide hot air to the second conveying group; the difference between the hot air temperature of the second hot air source and the hot air temperature of the first hot air source is greater than 0°.
[0008] Optionally, the first conveying group and the second conveying group are staggered along the conveying direction; a guide plate is provided between the first conveying group and the second conveying group; one end of the first conveying group away from the guide plate is located directly below the feed port, and one end of the second conveying group away from the guide plate is located directly above the discharge port.
[0009] Optionally, the first conveying group includes a first transmission belt, and the second conveying group includes a second transmission belt; one end of the guide plate is close to the first transmission belt, and the other end of the guide plate faces the second transmission belt.
[0010] Optionally, a wear-resistant pad is provided on one end of the guide plate close to the first transmission belt.
[0011] Optionally, an air guide port is provided on the second conveying group; the air guide port is used to transfer part of the heat of the second conveying group to the first conveying group.
[0012] Optionally, a temperature sensor and an air pressure sensor are also included; the temperature sensor and the air pressure sensor are both arranged inside the shell.
[0013] Optionally, an alarm light is provided on the outside of the shell; signals are transmitted between the alarm light and the temperature sensor, and between the alarm light and the air pressure sensor through the controller.
[0014] Optionally, an air outlet is provided on the shell, and an air pump connected to the air outlet is provided outside the shell; the air pump draws air into the shell through the air outlet to balance the air pressure in the shell.
[0015] Optionally, a vibration motor is provided on the transmission belt, and the vibration motor is used to vibrate the transmission belt to flip the plastic particles.
[0016] Compared with the prior art, the above one or more technical solutions in the automatic drying device for plastic particles provided by the embodiment of the utility model have at least one of the following technical effects:
[0017] When in use, plastic particles enter the shell from the feed port and then fall onto the transmission belt. The transmission belt transports the plastic particles toward the discharge port. During this process, the hot air source blows out hot air, which passes through the air inlet and blows toward the transmission belt, thereby drying the plastic particles. A number of humidity sensors are provided on the conveying device, and the humidity sensors are used to detect the surface humidity of the plastic particles and thus obtain their drying conditions. A number of humidity sensors are evenly distributed to track the drying conditions of the plastic particles, so that when the plastic particles are too wet, the heat of the hot air source can be dynamically increased by manual or controller control, or the transmission speed of the transmission belt can be slowed down to obtain plastic particles of the required dryness and wetness, thereby reducing rework and reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0019] Figure 1 It is a schematic diagram of the structure of the conveying device.
[0020] Figure 2 It is a cutaway view of the utility model.
[0021] Figure 3 A cutaway view of the guide plate portion.
[0022] Among them, the reference numerals in the figure are:
[0023] 1. Shell; 2. Conveying device; 3. Humidity sensor; 4. Temperature sensor; 5. Air pressure sensor; 6. Alarm light;
[0024] 11. Feed inlet; 12. Discharge outlet; 13. Air inlet; 14. Air outlet;
[0025] 21. Transmission wheel; 22. Driving motor; 23. First conveying group; 231. First hot air source; 232. First transmission belt; 24. Second conveying group; 241. Second hot air source; 242. Second transmission belt; 243. Guide plate; 244. Wear-resistant pad; 245. Air guide port; 25. Vibration motor. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.
[0027] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.
[0030] In one embodiment of the present invention, a plastic granule automatic drying device is provided, which is used for drying plastic granules. Figure 1 and Figure 2 , including a shell 1 with a cover arranged outside for protection and support; the outer wall of the shell 1 is penetrated with a feed port 11, a discharge port 12, and an air inlet 13 toward the inside thereof; the feed port 11 is used to allow plastic particles to enter, and the discharge port 12 is used to discharge plastic particles; a hot air source connected to the air inlet 13 is arranged outside the shell 1, and the hot air source can be set as a hot air blower to generate hot air and blow the hot air into the interior of the shell 1; the hot air source and the air inlet 13 are connected by an air inlet pipe.
[0031] Furthermore, a conveying device 2 for conveying plastic particles is provided in the shell 1, and the conveying device 2 includes a driving motor 22, a transmission wheel 21, and a transmission belt; the driving motor 22 is used to drive the transmission wheel 21 to rotate, and the rotation of the transmission wheel 21 drives the transmission belt to rotate. When the transmission belt rotates, the plastic particles can be conveyed from the feed port 11 to the discharge port 12.
[0032] Furthermore, the air inlet 13 corresponds to the rotation direction of the transmission belt, so that the hot air blown out from the air inlet 13 moves along the rotation direction of the transmission belt, so that the plastic particles on the transmission belt can come into contact with the hot air and then be dried; the direction of the air inlet 13 can be set to be the same as the moving direction of the plastic particles, so as to reduce the resistance to the moving state of the plastic particles when the hot air is blown; of course, the direction of the air inlet 13 can also be set to be opposite to the moving direction of the plastic particles, so that the plastic particles close to the discharge port 12 are subjected to higher temperature heat, so as to improve the drying yield.
[0033] Furthermore, a number of humidity sensors 3 are evenly distributed in the middle and tail of the conveying device 2. The humidity sensors 3 are used to detect the surface humidity of the plastic particles in the middle and tail to obtain the drying conditions. When the humidity of the plastic particles in the middle and tail is too high, the drying intensity can be improved by slowing down the transmission speed of the transmission belt and increasing the blowing temperature of the hot air source; or within the required humidity range of the plastic particles, the blowing temperature of the hot air source can be reduced to reduce the power of the hot air source and reduce energy consumption.
[0034] Compared with the prior art, the above one or more technical solutions in the automatic drying device for plastic particles provided by the embodiment of the utility model have at least one of the following technical effects:
[0035] When in use, the plastic particles enter the shell 1 from the feed port 11 and then fall onto the transmission belt, which transports the plastic particles toward the discharge port 12. During this process, the hot air source blows out hot air, which passes through the air inlet 13 and blows toward the transmission belt, thereby drying the plastic particles. A plurality of humidity sensors 3 are provided on the conveying device 2, and the humidity sensors 3 are used to detect the surface humidity of the plastic particles and thereby obtain their drying conditions. The plurality of humidity sensors 3 are evenly distributed to track the drying conditions of the plastic particles, so that when the plastic particles are over-humidified, the heat of the hot air source can be dynamically increased manually or by a controller, or the transmission speed of the transmission belt can be slowed down to obtain plastic particles of the required dryness and wetness, thereby reducing rework and reducing energy loss.
[0036] In another embodiment of the present invention, reference Figure 1 and Figure 2The conveying device 2 is composed of a first conveying group 23 and a second conveying group 24 that cooperate to complete the conveying of plastic particles. After the first conveying group 23 conveys the plastic particles to the second conveying group 24, the second conveying group 24 continues to convey; the first conveying group 23 is arranged above the second conveying group 24; the hot air source is composed of a first hot air source 231 and a second hot air source 241, the first hot air source 231 is used to provide hot air to the first conveying group 23, and the second hot air source 241 is used to provide hot air to the second conveying group 24; the difference between the hot air temperature of the second hot air source 241 and the hot air temperature of the first hot air source 231 is greater than 0°, so that the plastic particles can be initially dried on the first conveying group 23, and then enter the second conveying group 24 for secondary drying, so as to improve the drying efficiency of the plastic particles and have a good drying effect.
[0037] Furthermore, the first conveying group 23 and the second conveying group 24 are staggered along the conveying direction, so that one end of the second conveying group 24 protrudes relative to one end of the first conveying group 23, so that the plastic particles fall from the first conveying group 23 to the second conveying group 24; a guide plate 243 for guiding the plastic particles to fall is provided between the first conveying group 23 and the second conveying group 24; the guide plate 243 is fixed by a bracket; the end of the first conveying group 23 away from the guide plate 243 is located directly below the feed port 11, and the end of the second conveying group 24 away from the guide plate 243 is located directly above the discharge port 12, so that after the plastic particles enter the shell 1 from the feed port 11, they pass through the first conveying group 23, the guide plate 243, and the second conveying group 24 in sequence, and then exit the shell 1 from the discharge port 12.
[0038] Specifically, refer to Figure 1 and Figure 3 The first conveying group 23 includes a first conveying belt 232, and the second conveying group 24 includes a second conveying belt 242; one end of the guide plate 243 is close to the first conveying belt 232, and the other end of the guide plate 243 is toward the second conveying belt 242, so that the plastic particles enter the guide plate 243 from the first conveying belt 232, and then fall onto the second conveying belt 242 under the guidance of the guide plate 243.
[0039] Furthermore, a wear-resistant pad 244 is provided on one end of the guide plate 243 close to the first transmission belt 232, and the bottom of the wear-resistant pad 244 is in direct contact with the first transmission belt 232, so that the plastic particles can be smoothly delivered to the guide plate 243 by the first transmission belt 232; the wear-resistant pad 244 can be made of plastic, rubber, or silicone material; the wear-resistant pad 244 and the guide plate 243 are connected in a detachable snap-fit manner, so that the wear-resistant pad 244 can be maintained or replaced.
[0040] In another embodiment of the present invention, reference Figure 3A partition is provided on the top of the second conveying group 24, and the partition is used to separate the first conveying group 23 from the second conveying group 24 to reduce the heat transfer between the two conveying groups, so that the two conveying groups can maintain their respective drying temperatures.
[0041] Furthermore, the second conveying group 24 is provided with an air duct 245 on the partition which is connected with the first conveying group 23; the air duct 245 is used to transfer part of the heat of the second conveying group 24 to the first conveying group 23, so as to reduce the internal air pressure of the second conveying group 24 and reduce the heat generation pressure of the first hot air source 231; the number and size of the air duct 245 are moderate so as to prevent a large amount of heat from being lost from the second conveying group 24.
[0042] In another embodiment of the present invention, reference Figure 2 , also includes a temperature sensor 4 and an air pressure sensor 5; the temperature sensor 4 and the air pressure sensor 5 are both arranged inside the shell 1, and are used to detect the temperature and air pressure inside the shell 1 respectively; an alarm light 6 is arranged on the outside of the shell 1, and signals are transmitted between the alarm light 6 and the temperature sensor 4, and between the alarm light 6 and the air pressure sensor 5 through the controller. When overloaded temperature and air pressure are detected, the alarm light 6 generates an alarm light 6 light to remind the staff to deal with it in time.
[0043] In another embodiment of the present invention, reference Figure 3 An air outlet 14 is provided on the shell 1, and an air pump connected to the air outlet 14 is provided outside the shell 1; an air extraction pipe is connected between the air extraction pump and the air outlet 14, and the air extraction pump extracts air into the shell 1 through the air outlet 14 to balance the air pressure in the shell 1 and reduce safety hazards.
[0044] In another embodiment of the present invention, reference Figure 3 A vibration motor 25 is provided on the transmission belt, and the vibration motor 25 is used to vibrate the transmission belt to drive the plastic particles on the transmission belt to flip, so as to dry the surface and bottom of the plastic particles to improve the drying rate and have a good drying effect.
[0045] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.
[0046] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.
Claims
1. An automatic drying device for plastic particles, used for drying plastic particles, comprising a housing (1); the housing (1) is provided with a feed inlet (11), a discharge outlet (12), and an air inlet (13); a hot air source connected to the air inlet (13) is provided outside the housing (1); the characteristics are: A conveying device (2) is provided in the housing (1), and the conveying device (2) comprises a driving motor (22), a transmission wheel (21), and a transmission belt; the driving motor (22) is used to drive the transmission wheel (21) to rotate, and the rotation of the transmission wheel (21) drives the transmission belt to rotate, and when the transmission belt rotates, the plastic particles can be conveyed from the feed port (11) to the discharge port (12); the air inlet (13) corresponds to the rotation direction of the transmission belt; a plurality of humidity sensors (3) are evenly distributed in the middle and tail of the conveying device (2), and the humidity sensors (3) are used to detect the surface humidity of the plastic particles to obtain the drying condition thereof.
2. The automatic drying device for plastic particles according to claim 1, characterized in that: The conveying device (2) is composed of a first conveying group (23) and a second conveying group (24) that cooperate to complete the conveying; the first conveying group (23) is arranged above the second conveying group (24); the hot air source is composed of a first hot air source (231) and a second hot air source (241), the first hot air source (231) is used to provide hot air to the first conveying group (23), and the second hot air source (241) is used to provide hot air to the second conveying group (24); the difference between the hot air temperature of the second hot air source (241) and the hot air temperature of the first hot air source (231) is greater than 0°.
3. The automatic drying device for plastic particles according to claim 2, characterized in that: The first conveying group (23) and the second conveying group (24) are arranged alternately along the conveying direction; a guide plate (243) is provided between the first conveying group (23) and the second conveying group (24); an end of the first conveying group (23) away from the guide plate (243) is located directly below the feed port (11), and an end of the second conveying group (24) away from the guide plate (243) is located directly above the discharge port (12).
4. The automatic drying device for plastic particles according to claim 3, characterized in that: The first conveying group (23) includes a first transmission belt (232), and the second conveying group (24) includes a second transmission belt (242); one end of the guide plate (243) is close to the first transmission belt (232), and the other end of the guide plate (243) faces the second transmission belt (242).
5. The automatic drying device for plastic particles according to claim 4, characterized in that: A wear-resistant pad (244) is provided on one end of the guide plate (243) close to the first transmission belt (232).
6. The automatic drying device for plastic particles according to claim 2, characterized in that: The second conveying group (24) is provided with an air guide port (245); the air guide port (245) is used to transfer part of the heat of the second conveying group (24) to the first conveying group (23).
7. The automatic drying device for plastic particles according to any one of claims 1 to 6, characterized in that: It also comprises a temperature sensor (4) and an air pressure sensor (5); the temperature sensor (4) and the air pressure sensor (5) are both arranged inside the housing (1).
8. The automatic drying device for plastic particles according to claim 7, characterized in that: An alarm light (6) is provided on the outside of the housing (1); signals are transmitted between the alarm light (6) and the temperature sensor (4), and between the alarm light (6) and the air pressure sensor (5) via a controller.
9. The automatic drying device for plastic particles according to any one of claims 1 to 6, characterized in that: An air outlet (14) is provided on the shell (1), and an air pump connected to the air outlet (14) is provided outside the shell (1); the air pump draws air into the shell (1) through the air outlet (14) to balance the air pressure in the shell (1).
10. The automatic drying device for plastic particles according to any one of claims 1 to 6, characterized in that: The transmission belt is provided with a vibration motor (25), and the vibration motor (25) is used to make the transmission belt vibrate so as to flip the plastic particles.