Feeding dehumidifying and drying device

Abstract

The invention discloses a feeding dehumidifying and drying device which comprises a drying box, a feeding hopper is installed in the middle of the top end of the drying box, a material distributing assembly is installed at the position, located on the lower side of the feeding hopper, in the drying box, and the material distributing assembly comprises a material distributing plate and two material guiding plates. The material distributing device has the beneficial effects that the material distributing machine assembly composed of the material guiding plate and the material distributing plate is installed on the lower side of the feeding hopper on the drying box, and the two conveying mechanisms and the two drying mechanisms are symmetrically installed in the drying box; plastic particle raw materials can be dried in a continuous feeding and distributing conveying mode when the device is used, and due to the fact that the feeding process and the discharging process of plastic particles are continuous in the whole drying process, the time consumed by machine halt during feeding and discharging of the device is saved; and the device can conveniently and efficiently dehumidify and dry a large batch of plastic particles.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine feed drying, and in particular to a feed dehumidification and drying device. Background Art

[0002] In the field of injection molding production, the drying of plastic particles is a key link to ensure product quality. With the continuous growth of demand for plastic products, the injection molding industry has increasingly higher requirements for plastic particle drying technology. In current industrial production, plastic particles often contain a certain amount of moisture due to factors such as the storage environment. If they are directly used for injection molding without drying, it will cause quality problems such as bubbles, deformation, and reduced strength in the product, which will seriously affect product performance and production efficiency.

[0003] The traditional feed dehumidification and drying device for injection molding machines is mainly composed of a drying box, a drying mechanism and a stirring mechanism. During the drying process, the plastic particles are first put into the drying box at one time, and then turned and stirred by the stirring mechanism, while hot air is introduced into the drying mechanism for drying. This method has many disadvantages. On the one hand, after a single drying is completed, the plastic particles in the drying box must be completely discharged before they can be added and dried again. The discharge and feeding process takes a lot of time, resulting in frequent equipment shutdowns, which greatly reduces production efficiency. Especially in large-scale production scenarios, the increase in time cost caused by frequent shutdowns is very significant, which seriously restricts production progress.

[0004] On the other hand, traditional drying devices have a relatively rough control over the drying process. It is difficult to precisely control the drying temperature and humidity, and it is impossible to perform targeted drying according to the characteristics of different plastic particles. Different types of plastic particles have different water content, heat resistance, and drying requirements. It is difficult to achieve the best drying effect with uniform drying conditions. It is easy for some plastic particles to be over-dried and others to be under-dried, which not only wastes energy but also affects the stability of product quality.

[0005] In addition, traditional drying devices are also insufficient in terms of environmental protection. The moisture and odor generated during the drying process are directly discharged, which not only pollutes the production environment, but also may cause harm to the health of operators. At the same time, the noise generated during the operation of the equipment is relatively high, which further deteriorates the working environment and does not meet the requirements of modern green production.

[0006] With the development of intelligent manufacturing technology, the injection molding industry is moving towards automation and intelligence. Traditional drying devices cannot be effectively connected to the automated production line and are difficult to meet the requirements of intelligent production. On an automated production line, a drying device is needed to achieve continuous feeding and discharging, and have automatic monitoring and regulation functions, working in coordination with other production links to improve the operating efficiency and stability of the entire production line. However, existing drying devices cannot meet these requirements and have become a bottleneck restricting the intelligent development of the injection molding industry. Therefore, it is urgent to develop a new type of feeding and dehumidifying drying device to solve the problems of low efficiency, unstable quality, poor environmental protection, and low intelligence level existing in traditional drying devices, and to promote the sustainable development of the injection molding industry. Summary of the Invention

[0007] (1) Technical problems to be solved

[0008] The technical problem to be solved by the present invention is to provide a feeding and dehumidifying drying device that can rapidly dehumidify and dry plastic particles by means of continuous feeding and continuous discharging, in view of the current situation of the prior art.

[0009] (2) Technical solutions

[0010] The present invention is realized through the following technical solutions: The present invention provides a feeding and dehumidifying drying device, which includes a drying box. A feeding hopper is installed in the middle of the top end of the drying box. A material distribution component is installed below the feeding hopper in the drying box. The material distribution component includes a material distribution plate and a guide plate. There are two guide plates, and the two guide plates are symmetrically installed on the lower parts of the two inner side walls of the feeding hopper. The material distribution plate is installed in the drying box directly below the feeding hopper; Two conveying mechanisms are symmetrically installed on both sides of the material distribution plate in the drying box. A drying mechanism is also installed above each conveying mechanism in the drying box. The conveying mechanism includes a motor, a conveyor belt, and a roller. The roller is installed in the drying box, the conveyor belt is sleeved outside the roller, and the motor is installed outside the drying box opposite the shaft of one of the rollers; The drying mechanism includes a hot air blower and a blowing hood. The hot air blower is installed on one side of the top end of the drying box, and the blowing hood is installed in the drying box above the conveyor belt; A Y-shaped discharge pipe is also installed in the middle of the bottom end of the drying box.

[0011] Furthermore, an operation panel is also installed on one outer side wall of the drying box. The operation panel adopts a touch-type liquid crystal display screen, which integrates a microprocessor inside, has an independent control program, and is electrically connected to the hot air blower and the motor through shielded cables. The operation panel also has a password protection function.

[0012] Further, two legs are symmetrically welded on both sides of the bottom end of the drying oven. The legs are made of high-strength carbon steel and are treated with hot-dip galvanization. Rubber anti-slip pads are installed at the bottom of the legs to prevent the drying oven from shifting or shaking during operation. The height of each leg can be finely adjusted by a screw adjustment device. Two exhaust pipes are symmetrically installed on both sides of the top end of the drying oven. The exhaust pipes are made of stainless steel and are internally provided with an activated carbon filter layer.

[0013] Further, the material guiding plate is welded to the feeding hopper. The welding adopts the argon arc welding process, and the welding joint is smooth and flat. The material guiding plate is of an inclined downward structure, and the surface of the material guiding plate is polished, with a roughness reaching Ra0.8 - Ra1.6μm.

[0014] Further, the material distributing plate is welded to the drying oven, adopting the argon arc welding process. The top end of the material distributing plate is of an arc-shaped structure, and the top end of the material distributing plate is directly opposite to the center of the feeding hopper. A layer of polytetrafluoroethylene coating is applied on the surface of the material distributing plate.

[0015] Further, the conveyor belt is connected to the roller in a nested manner. The conveyor belt is made of rubber and internally added with a polyester fiber reinforcing layer. Anti-slip patterns are designed on the surface of the conveyor belt. The surface of the roller is treated with chrome plating. The motor is connected to the corresponding roller through an elastic coupling.

[0016] Further, the hot air blower is connected to the blowing hood through a pipe. The pipe is made of stainless steel bellows. The hot air blower internally uses a high-efficiency electric heating wire as a heating element, equipped with an intelligent temperature control system. The air outlet at the bottom end of the blowing hood is directly opposite to the conveyor belt. The shape of the air outlet is strip-shaped, and a flow equalizing plate is arranged inside.

[0017] Further, a humidity sensor and a temperature sensor are arranged inside the drying oven, which are respectively used to monitor the humidity and temperature inside the drying oven in real time. The humidity sensor and the temperature sensor are electrically connected to the operation panel and transmit the monitoring data to the operation panel for display in real time. When the humidity or temperature inside the drying oven exceeds the set range, the operation panel will issue an alarm prompt and automatically adjust the working parameters of the hot air blower at the same time.

[0018] Further, a flow control device is installed on the feeding hopper. The device includes an electric control valve and a flow sensor. The flow sensor is used to monitor the feeding flow of plastic particles in real time and transmit the data to the operation panel. The operator sets the feeding flow through the operation panel, and the electric control valve automatically adjusts the opening according to the set value.

[0019] Further, an electric valve and a material detector are installed on the discharge pipe. The electric valve is used to control the opening and closing of the discharge pipe, and the material detector is used to detect whether there is material discharged from the discharge pipe. When the material detector detects material, the electric valve remains open; when no material is detected and after a set time, the electric valve automatically closes to prevent the leakage of hot air in the drying oven.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In terms of improving production efficiency, through the unique design of the material distribution component, conveying mechanism and drying mechanism, the device realizes the continuous feeding and discharging of plastic particles. This innovative design completely changes the intermittent working mode of traditional drying devices, avoids the time loss of frequent shutdowns for feeding and discharging, enables the equipment to operate stably for a long time, and greatly improves the drying capacity for a large number of plastic particles. Taking a large-scale injection molding production enterprise as an example, after using this device, the production efficiency can be increased by 30%-50%, effectively shortening the production cycle and improving the market competitiveness of the enterprise.

[0023] In terms of improving drying quality, the symmetrically arranged drying mechanisms in the drying oven and the precisely controlled hot air system play a key role. The hot air blower is paired with an intelligent temperature control system, which can accurately regulate the hot air temperature to ensure that the plastic particles are dried at an appropriate temperature, avoiding the influence of too high or too low temperature on the drying effect. The long strip-shaped air outlet at the bottom of the air blowing hood and the design of the flow equalizing plate enable the hot air to evenly cover the surface of the plastic particles, ensuring the uniformity of drying, effectively avoiding the situation of insufficient or excessive drying of some plastic particles, thereby improving the stability of product quality, reducing the defective rate, and lowering the production cost.

[0024] In terms of intelligent control, the design of the operation panel greatly improves the intelligent level of the equipment. The touch-type liquid crystal display screen is paired with a microprocessor and an independent control program, which is not only convenient to operate but also can monitor the operating status of the equipment in real time, such as the temperature of the hot air blower and the rotation speed of the motor. The humidity sensor and the temperature sensor monitor the environment in the drying oven in real time. Once the humidity or temperature exceeds the set range, the operation panel automatically adjusts the parameters of the hot air blower to achieve intelligent control. The flow control device of the feeding hopper and the electric valve of the discharge pipe cooperate with the material detector to accurately control the feeding and discharging processes, ensure the stable operation of the equipment, reduce manual intervention, and improve the accuracy and reliability of production.

[0025] In addition, the device also performs excellently in terms of environmental protection and stability. The activated carbon filter layer in the exhaust pipe effectively adsorbs the odors and fine particles in the moisture, reducing environmental pollution and improving the working environment. The outriggers are made of high-strength carbon steel and are hot-dip galvanized. Rubber anti-slip pads are installed at the bottom, which not only ensures the stability of the equipment, extends its service life, but also adapts to different installation surfaces, providing convenience for the wide application of the equipment. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a feeding dehumidifying and drying device according to the present invention;

[0027] Figure 2 is a main sectional view of a feeding dehumidifying and drying device according to the present invention.

[0028] The description of the reference numerals in the drawings is as follows:

[0029] 1, feeding hopper; 2, drying chamber; 3, operation panel; 4, outrigger; 5, discharge pipe; 6, conveying mechanism; 601, conveyor belt; 602, motor; 603, roller; 7, drying mechanism; 701, hot air blower; 702, blowing hood; 8, material distribution assembly; 801, guide plate; 802, distribution plate; 9, exhaust pipe. Detailed Embodiment

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] As Figure 1 - Figure 2As shown in the figure, a feeding dehumidifying and drying device in this embodiment includes a drying box 2. A feeding hopper 1 is installed in the middle of the top end of the drying box 2. A material distribution component 8 is installed below the feeding hopper 1 in the drying box 2. The material distribution component 8 includes a material distribution plate 802 and a material guiding plate 801. There are two material guiding plates 801, and the two material guiding plates 801 are symmetrically installed at the lower parts of the two inner side walls of the feeding hopper 1. The material distribution plate 802 is installed directly below the feeding hopper 1 in the drying box 2. Two conveying mechanisms 6 are symmetrically installed on both sides of the material distribution plate 802 in the drying box 2. A drying mechanism 7 is also installed above each conveying mechanism 6 in the drying box 2. The conveying mechanism 6 includes a motor 602, a conveyor belt 601, and a roller 603. The motor 602 drives the corresponding conveyor belt 601 to rotate, and the movement of plastic particles can be realized under the action of the conveyor belt 601. The roller 603 is installed in the drying box 2, and the conveyor belt 601 is sleeved outside the roller 603. The motor 602 is installed outside the drying box 2 opposite the shaft of one of the rollers 603. The drying mechanism 7 includes a hot air blower 701 and a blowing hood 702. The hot air blower 701 is installed on one side of the top end of the drying box 2, and the blowing hood 702 is installed above the conveyor belt 601 in the drying box 2. The hot air blower 701 blows air into the blowing hood 702, and the drying of plastic particles can be realized when the hot air blows on the plastic particles. A Y-shaped discharge pipe 5 is also installed in the middle of the bottom end of the drying box 2.

[0032] As Figure 1 - Figure 2 shown in the figure, in this embodiment, an operation panel 3 is also installed on one side wall outside the drying box 2. The operation panel 3 adopts a touch-type liquid crystal display screen, and the interface design is simple and intuitive, which is convenient for operators to operate. It integrates a microprocessor inside and has an independent control program, and is electrically connected to the hot air blower 701 and the motor 602 through shielded cables. Through the operation panel 3, the operator can not only separately control the heating temperature, wind speed of the hot air blower 701, and the rotation speed and start / stop of the motor 602, but also view the operating status of the equipment in real time, such as the working temperature of the hot air blower 701, the running duration of the motor 602 and other information. In addition, the operation panel 3 is also provided with a password protection function to prevent non-professional personnel from misoperating and ensure the safe operation of the equipment.

[0033] In the present invention, two legs 4 are symmetrically welded to both sides of the bottom end of the drying oven 2. The legs 4 are made of high-strength carbon steel and are treated with hot-dip galvanization, having good anti-corrosion performance. A rubber anti-slip pad is installed at the bottom of the legs 4 to increase the friction with the ground and prevent the drying oven 2 from shifting or shaking during operation. The height of each leg 4 can be finely adjusted by a threaded adjustment device to adapt to different installation grounds, ensuring that the drying oven 2 is in a horizontal state and ensuring the stable operation of the equipment. Two exhaust pipes 9 are symmetrically installed on both sides of the top end of the drying oven 2. The exhaust pipes 9 are made of stainless steel, and an activated carbon filter layer is provided inside, which can effectively adsorb the odors and fine particles generated during the drying process and avoid polluting the surrounding environment. The diameter of the exhaust pipes 9 is accurately calculated to ensure that the moisture discharge does not affect the drying environment inside the drying oven 2.

[0034] In the present invention, the guiding plate 801 is welded to the feeding hopper 1. The welding adopts the argon arc welding process, and the welded joint is smooth and flat, ensuring that the plastic particles can slide smoothly on the guiding plate 801 without jamming due to welding defects. The guiding plate 801 is of an inclined downward structure, and its inclination angle is optimized. While ensuring that the plastic particles can slide smoothly, it can also preliminarily disperse the plastic particles during the sliding process. The surface of the guiding plate 801 is polished, and the roughness reaches Ra0.8 - Ra1.6μm, further reducing the friction between the plastic particles and the guiding plate 801 and improving the guiding efficiency.

[0035] In the present invention, the distributing plate 802 is welded to the drying oven 2, and the argon arc welding process is also used to ensure the welding quality. The top end of the distributing plate 802 is of an arc-shaped structure, and the top end of the distributing plate 802 is directly opposite to the center of the feeding hopper 1. The arc-shaped top end of the distributing plate 802 can effectively buffer the falling impact force of the plastic particles, making the plastic particles disperse more evenly to both sides. A layer of polytetrafluoroethylene coating is applied to the surface of the distributing plate 802, which has good non-stickiness, avoiding the plastic particles from adhering to the distributing plate 802 and ensuring the accuracy and continuity of material distribution.

[0036] In the present invention, the conveyor belt 601 is connected to the roller 603 in a nested manner. The conveyor belt 601 is made of high-strength rubber material, and a polyester fiber reinforcement layer is added inside to improve the strength and wear resistance of the conveyor belt 601. The surface of the conveyor belt 601 is designed with anti-slip patterns to increase the friction with the plastic particles and prevent the plastic particles from sliding during transportation. The surface of the roller 603 is chrome-plated, with high hardness and smoothness, which can reduce the wear with the conveyor belt 601. The motor 602 is connected to the corresponding roller 603 through an elastic coupling. The elastic coupling can effectively compensate for the installation error between the motor 602 and the roller 603, reduce vibration and impact, and ensure that the power of the motor 602 can be smoothly transmitted to the roller 603.

[0037] In the present invention, the hot air blower 701 is connected to the blowing hood 702 through a pipeline. The pipeline is made of a high-temperature resistant and corrosion-resistant stainless steel bellows, which has good flexibility and is convenient for installation and adjustment. The interior of the hot air blower 701 uses an efficient electric heating wire as the heating element, and is equipped with an intelligent temperature control system, which can accurately control the temperature of the blown hot air, and the temperature control accuracy can reach ±2°C. The air outlet at the bottom end of the blowing hood 702 faces the conveyor belt 601 directly. The shape of the air outlet is strip-shaped, and a flow equalizing plate is arranged inside, so that the hot air blown by the hot air blower 701 can evenly cover the surface of the plastic particles on the conveyor belt 601, improving the uniformity of the drying effect.

[0038] In the present invention, a humidity sensor and a temperature sensor are arranged inside the drying oven 2, which are respectively used to monitor the humidity and temperature inside the drying oven 2 in real time. The humidity sensor and the temperature sensor are electrically connected to the operation panel 3, and transmit the monitored data to the operation panel 3 for display in real time. When the humidity or temperature inside the drying oven 2 exceeds the set range, the operation panel 3 will issue an alarm prompt, and at the same time automatically adjust the working parameters of the hot air blower 701 to ensure that the drying process is always in the best state.

[0039] In the present invention, a flow control device is installed on the feeding hopper 1, and the device includes an electric control valve and a flow sensor. The flow sensor is used to monitor the feeding flow rate of the plastic particles in real time and transmit the data to the operation panel 3. The operator can set the feeding flow rate through the operation panel 3, and the electric control valve automatically adjusts the opening according to the set value to achieve precise control of the feeding flow rate, avoiding affecting the drying effect and production efficiency due to excessive or insufficient feeding.

[0040] In the present invention, an electric valve and a material detector are installed on the discharge pipe 5. The electric valve is used to control the opening and closing of the discharge pipe 5, and the material detector is used to detect whether there is material discharged in the discharge pipe 5. When the material detector detects the material, the electric valve remains open; when the material is not detected and after a certain period of time, the electric valve automatically closes to prevent the hot air in the drying oven 2 from leaking, and at the same time avoid the entry of external moisture into the drying oven 2 and affecting the drying effect.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A feed dehumidification drying device, characterized in that: The invention comprises a drying box (2), wherein a feeding hopper (1) is installed at the middle of the top of the drying box (2), a material distribution component (8) is installed in the drying box (2) at the lower side of the feeding hopper (1), the material distribution component (8) comprises a material distribution plate (802) and a material guide plate (801), there are two material guide plates (801), the two material guide plates (801) are symmetrically installed at the lower part of the inner wall of the feeding hopper (1), the material distribution plate (802) is installed in the drying box (2) directly below the feeding hopper (1); two conveying mechanisms (6) are symmetrically installed on both sides of the material distribution plate (802) in the drying box (2), and a drying mechanism (7) is also installed in the drying box (2) at the upper side of each conveying mechanism (6), The conveying mechanism (6) comprises a motor (602), a conveyor belt (601) and a roller (603); the roller (603) is installed in the drying box (2); the conveyor belt (601) is sleeved on the outside of the roller (603); the motor (602) is installed on the outside of the drying box (2) facing the shaft of one of the rollers (603); the drying mechanism (7) comprises a hot air blower (701) and a blow hood (702); the hot air blower (701) is installed on one side of the top of the drying box (2); the blow hood (702) is installed in the drying box (2) and located on the upper side of the conveyor belt (601); a Y-shaped discharge pipe (5) is also installed in the middle of the bottom end of the drying box (2).

2. A feed dehumidification drying device according to claim 1, characterized in that: An operation panel (3) is also installed on one side wall outside the drying box (2). The operation panel (3) adopts a touch-type liquid crystal display screen, and has an integrated microprocessor therein, and has an independent control program. The operation panel (3) is electrically connected to the hot air blower (701) and the motor (602) via a shielded cable. The operation panel (3) is also provided with a password protection function. Two legs (4) are symmetrically welded on both sides of the bottom of the drying box (2). The legs (4) are made of high-strength carbon steel and are hot-dip galvanized. Rubber anti-skid pads are installed at the bottom of the legs (4) to prevent the drying box (2) from displacement or shaking during operation. The height of each leg (4) is fine-tuned by a threaded adjustment device. Two exhaust pipes (9) are symmetrically installed on both sides of the top of the drying box (2). The exhaust pipes (9) are made of stainless steel and have an activated carbon filter layer arranged inside.

3. A feed dehumidification drying device according to claim 1, characterized in that: The guide plate (801) is welded to the feeding hopper (1) using an argon arc welding process, and the weld is smooth and flat. The guide plate (801) is a downwardly inclined structure, and the surface of the guide plate (801) is polished to a roughness of Ra0.8-Ra1.6μm.

4. A feed dehumidification drying device according to claim 4, characterized in that: The dividing plate (802) is welded to the drying box (2) using an argon arc welding process. The top of the dividing plate (802) is an arc-shaped structure, and the top of the dividing plate (802) is directly opposite to the center of the feeding hopper (1). The surface of the dividing plate (802) is coated with a layer of polytetrafluoroethylene coating.

5. The feed dehumidification drying device according to claim 1, characterized in that: The conveyor belt (601) is connected to the roller (603) in a nested manner. The conveyor belt (601) is made of rubber material with a polyester fiber reinforcement layer added inside. The surface of the conveyor belt (601) is designed with anti-slip textures. The surface of the roller (603) is chrome-plated. The motor (602) is connected to the corresponding roller (603) through an elastic coupling.

6. A feed dehumidification drying device according to claim 1, characterized in that: The hot air blower (701) is connected to the blowing hood (702) through a pipeline, and the pipeline is made of a stainless steel corrugated tube. The hot air blower (701) uses a high-efficiency electric heating wire as a heating element, and is equipped with an intelligent temperature control system. The air outlet at the bottom of the blowing hood (702) faces the conveyor belt (601), and the air outlet is in the shape of a long strip, and a flow equalizing plate is arranged inside.

7. The feed dehumidification drying device according to claim 1, characterized in that: The drying box (2) is provided with a humidity sensor and a temperature sensor for respectively monitoring the humidity and temperature in the drying box (2) in real time. The humidity sensor and the temperature sensor are electrically connected to the operation panel (3) to transmit the monitoring data in real time to the operation panel (3) for display. When the humidity or temperature in the drying box (2) exceeds a set range, the operation panel (3) will issue an alarm and automatically adjust the working parameters of the hot air blower (701).

8. The feed dehumidification drying device according to claim 1, characterized in that: The feeding hopper (1) is provided with a flow control device, which comprises an electric regulating valve and a flow sensor. The flow sensor is used to monitor the feeding flow of the plastic particles in real time and transmit the data to the operation panel (3). The operator sets the feeding flow through the operation panel (3), and the electric regulating valve automatically adjusts the opening according to the set value.

9. The feed dehumidification drying device according to claim 1, characterized in that: An electric valve and a material detector are installed on the discharge pipe (5). The electric valve is used to control the opening and closing of the discharge pipe (5). The material detector is used to detect whether material is discharged from the discharge pipe (5). When the material detector detects material, the electric valve remains in an open state; when no material is detected and after a set time, the electric valve automatically closes to prevent leakage of hot air in the drying box (2).

Images