Screening device with cooling function
By introducing a cooling function into the screener and utilizing the design of cold airflow moving in opposite directions with the material, the problems of scalding and gas release when high-temperature materials pass through the screen are solved, achieving efficient cooling and screening and improving processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-03-13
Smart Images
Figure CN223988723U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material processing equipment, specifically to a screening device with a cooling function. Background Technology
[0002] In material processing, such as when surface insulation of metal powders is involved, it refers to the formation of a dense oxide film (insulating coating) on the metal surface after specific treatment. This film effectively prevents the metal powder from further reacting with oxygen, water, or other corrosive media in the surrounding environment, thereby significantly slowing down the corrosion rate of the metal powder. This process can give the metal corrosion resistance properties similar to those of noble metals, namely a lower corrosion rate and a higher electrode potential. Once the insulating layer is formed, it can self-repair to some extent even in adverse environments, continuing to protect the metal substrate from corrosion.
[0003] In the process of metal powder processing, there are generally processing steps such as feeding, physical and chemical reaction, and drying. The dried material is directly output. In other existing technologies, in order to avoid the dried material from forming clumps, a sieving process is added to screen the material into loose granules. However, since the material is dried at high temperature (greater than 80°C), the surface temperature of the material does not decrease significantly even after sieving. Therefore, it is easy to cause burns after the material is output. In addition, the high temperature causes the volatilization of gases with irritating odors, which can easily cause discomfort to the workers. If a temporary storage process is added before sieving, it will not be conducive to the processing efficiency of the material. Utility Model Content
[0004] The screening device with cooling function of this invention can effectively solve the problems of burns and discomfort caused by material output in the prior art.
[0005] According to one aspect of the present invention, a screening device with a cooling function is provided, with the end pointing in the direction of gravity as the lower side, comprising:
[0006] A screening device for screening materials has an inlet and a outlet arranged opposite to each other, wherein the material is input from the inlet and screened to the outlet; the screening device also has an air inlet and an air outlet arranged opposite to each other and connected to each other.
[0007] A cooling device is used to generate a cold airflow that acts on the material, and the output end of the cooling device is connected to the air inlet.
[0008] The cold airflow enters the sieving device from the air inlet and exits from the exhaust port, so that the material is simultaneously cooled and sieved to the discharge port for output.
[0009] In some embodiments, a negative pressure device is also included, with its input end connected to the output end of the cooling device and its output end connected to the air inlet, so that the air inlet is connected to the output end of the cooling device through the negative pressure device. Thus, the negative pressure device is used to accelerate the input cold airflow into the sieving device and simultaneously promote the movement of the cold airflow within the sieving device.
[0010] In some embodiments, the material enters the sieving device from the feed inlet and moves along a first direction to the discharge outlet, while the cold airflow enters the sieving device from the air inlet and moves along a second direction to the exhaust outlet, wherein the first and second directions are opposite. Thus, within the sieving device, the movement direction of the material and the movement direction of the cold airflow are opposite, i.e., they move towards each other, which helps to improve the utilization rate of the cold airflow and makes the cooling effect on the material more significant.
[0011] In some embodiments, in the first direction, the feed inlet and the discharge outlet are located between the air inlet and the exhaust outlet. This results in a longer path for the cold airflow in the screening device, encompassing the path of the material, and a more significant cooling effect on the material.
[0012] In some embodiments, the sieving device includes a screen frame and a vibrating device. The vibrating device is mounted on the screen frame, which contains at least one layer of screen mesh. In the direction of gravity, the screen mesh is located between the feed inlet and the discharge outlet, and the material passes through the screen mesh to be discharged from the discharge outlet. Thus, the material is sieved by its own weight and output through the discharge outlet. The vibrating device generates vibration to drive the screen mesh to act on the material.
[0013] In some embodiments, the screen is inclined within the screen frame, with the discharge port and air inlet located downstream of the screen, and the feed port and exhaust port located upstream of the screen. This allows the material to move along a first direction through the screen, thereby improving the material's cooling effect.
[0014] In some embodiments, the screen frame is provided with an inclined guide plate, which is located below the screen mesh. This guide plate directs the screened material to the discharge port.
[0015] In some embodiments, the screen has multiple layers arranged along the direction of gravity, with the aperture of each layer decreasing sequentially in the direction of gravity. Therefore, multiple layers of screen facilitate layer-by-layer screening of materials, are more suitable for materials with uneven diameters, and help to increase the material cooling time.
[0016] In some embodiments, the screen frame is provided with a base and an elastic element, the elastic element abutting between the screen frame and the base. Thus, the elastic element serves to reduce excessive vibration at the bottom of the screen frame and prevent violent shaking.
[0017] In some embodiments, in a first direction, the discharge port is closer to the inlet than the air inlet, and a baffle is provided between the air inlet and the discharge port. Thus, the baffle serves to block material from entering the air inlet, preventing blockage.
[0018] The screening device with cooling function of this invention has the following advantages compared with the prior art:
[0019] The sieving device of this application can sieve materials. The sieving device has a connected air inlet and an exhaust outlet to facilitate air exchange. The cooling device generates a cold airflow to cool the material. The cold airflow can enter the sieving device through the air inlet and exit through the exhaust outlet. Therefore, the material entering the sieving device can be cooled by the cold airflow and finally discharged from the discharge outlet. This can effectively reduce the temperature of the dried material. The simultaneous sieving and cooling can improve the efficiency of material output. After the material temperature is reduced, it is less likely to cause burns to workers and can also effectively prevent the volatilization of irritating odors. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structural principle of the screening device with cooling function of this utility model;
[0021] Figure 2 This is a cross-sectional schematic diagram of the screen frame structure in this utility model;
[0022] Figure 3 This is a schematic diagram of another embodiment of the screen in this utility model;
[0023] Figure 4 This is a schematic diagram of another embodiment of the sieving device in this utility model.
[0024] In the diagram: 1-Sieving device, 11-Screen frame, 12-Vibration device, 13-Feed inlet, 14-Discharge outlet, 15-Air inlet, 16-Exhaust outlet, 17-Baffle, 18-Screen mesh, 19-Guide plate, 191-First guide plate, 192-Second guide plate, 2-Negative pressure device, 3-Cooling device, 41-Base, 42-Elastic component. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] This utility model relates to a sieve with a cooling function, which can be applied to processes such as feeding, surface physicochemical reaction, passivation reaction, and drying. It is also applicable to other material processing processes. The materials include soft magnetic metal particles, metal or non-metal powders, and other discrete raw materials. The materials output from the previous process are dried at high temperature. When the materials enter this equipment, there may be agglomeration between the materials. Therefore, this equipment is mainly used to separate the materials to improve the looseness of the output materials.
[0028] The present invention will now be described in further detail with reference to the accompanying drawings.
[0029] Figure 1 A cooling-function screening device according to one embodiment of the present invention is schematically shown. The end pointing in the direction of gravity is the lower side (bottom), and the opposite side is the upper side (top). This cooling-function screening device includes a screening device 1, a negative pressure device 2, and a cooling device 3.
[0030] like Figure 2As shown, the screening device 1 is used for screening materials. The screening device includes a screen frame 11 and a vibrating device 12. The shape of the screen frame 11 is not limited and can be rectangular, cylindrical, etc. It has a hollow structure inside, allowing materials to enter the screen frame 11 for screening. The screen frame 11 has a feed inlet 13, a discharge outlet 14, an air inlet 15, and an exhaust outlet 16. The left and right directions are defined with the length of the screen frame 11 as the left and right directions (orthogonal to the direction of gravity). The left and right directions include direction A (i.e., the first direction) and direction B (i.e., the second direction). The feed inlet 13 is located at the top of the screen frame 11. The dried material is fed into the screen frame 11 and can be connected to the previous process equipment through a conduit. The feed port 13 is closer to the end (right side) of the screen frame 11 pointing in the B direction. The discharge port 14 is used to output the screened material. The discharge port 14 is set opposite to the feed port 13 in the length direction and is closer to the end (left side) of the screen frame 11 pointing in the A direction. In the gravity direction, the discharge port 14 is set opposite to the feed port 13. That is, the discharge port 14 is set at the bottom of the screen frame 11. The material can be output from the discharge port 14 by its own weight. At least one discharge port 14 is provided. An air inlet 15 is located at the bottom of the screen frame 11 and is used to input cold airflow. In direction B, the air inlet 15 and the discharge port 14 are located on the same side. Of course, the air inlet 15 and the discharge port 14 can also be located on the side wall near the bottom of the screen frame 11. Compared to the discharge port 14, the air inlet 15 is further away from the feed inlet 13, that is, the air inlet 15 is closer to the left side wall of the screen frame 11. The exhaust port 16 is connected to the air inlet 15 and is used to output the cold airflow after exchanging with the air inside the screen frame 11. The exhaust port 16 is located at... The top of the screen frame 11 is located on the same side as the feed inlet 13 in the length direction. Of course, the exhaust port 16 and the feed inlet 13 can also be located on the side near the top of the screen frame 11. Compared with the feed inlet 13, the exhaust port 16 is closer to the right side of the screen frame 11. It can be seen that the feed inlet 13 and the discharge port 14 are located between the air inlet 15 and the exhaust port 16. In the screen frame 11, the movement path of the cold airflow includes the movement path of the material, so as to make full use of the cold airflow and improve the cooling effect of the material.
[0031] Furthermore, in direction A, a baffle 17 is provided between the air inlet 15 and the discharge port 14. The baffle 17 is used to block material from entering the air inlet 15, preventing blockage. In other configurations, the baffle 17 can be omitted. For example, the air inlet 15 and the discharge port 14 can be located on the left side wall of the screen frame 11, and the exhaust port 16 and the feed port 13 can be located on the right side wall of the screen frame 11. The air inlet 15 is located above the discharge port 14, and the exhaust port 16 is located below the feed port 13, to prevent material from interfering with the airflow. Preferably, the baffle 17 is inclined between the air inlet 15 and the discharge port 14 to guide the cold airflow.
[0032] The screen frame 11 is equipped with a screen 18, which has apertures for screening materials. The screen 18 can be arranged in a single layer, double layer, or multiple layers within the screen frame 11. This embodiment takes a single layer as an example. The screen 18 is fixed to the inner wall of the screen frame 11. In the length direction, the screen 18 and the inner wall of the screen frame 11 are not completely sealed, allowing materials with larger diameters to pass through from both sides. The vibration device 12 is specifically a vibrator, which can be a commonly used vibrator in the industrial field. Refer to existing technology. The vibration device 12 is set on the screen frame 11, generally near the screen 18, so that it can more effectively act on the screen 18 to generate vibration force to be transmitted to the screen 18. Materials that are agglomerated on the screen 18 are separated by vibration, while materials with smaller diameters can pass directly through the screen 18.
[0033] Furthermore, a guide plate 19 is also provided inside the screen frame 11. The guide plate 19 is inclinedly connected to the inner wall of the screen frame 11 and is located below the screen 18. It is used to guide the separated material to the discharge port 14. The guide plate 19 has an upstream side and a downstream side. The upstream side is closer to the screen 18, and the downstream side is connected to or close to the discharge port 14 so that when the material falls to the guide plate 19 under its own weight, it can be guided to the discharge port 14 for output.
[0034] Furthermore, a base 41 and an elastic element 42 are provided at the bottom of the screen frame 11. The number of bases 41 and elastic elements 42 are corresponding. The base 41 is used to support the screen frame 11, and the elastic element 42 is preferably a spring. The elastic element 42 abuts between the base 41 and the screen frame 11 to reduce the overall vibration of the equipment.
[0035] The cooling device 3 is specifically a cooler, which is a cooling device used in industry that can generate cold airflow. For example, it is an air cooler or refrigerant chiller. Its principle is to reduce air temperature through refrigerant circulation and fan blowing. Some models also have air purification and sterilization functions. Alternatively, a low-temperature air cooler can be used, which is specifically designed for applications requiring even lower temperatures. It uses efficient refrigeration technology to achieve rapid cooling and is suitable for industrial processes requiring rapid cooling, such as quick-freezing of food and pharmaceutical products. Industrial chillers can also be used; please refer to existing technologies for details. The cooling device 3 mainly provides cold airflow to the air inlet 15, and the output end of the cooling device 3 is directly or indirectly connected to the air inlet 15.
[0036] The negative pressure device 2 is specifically a negative pressure fan. The input end of the negative pressure device 2 is connected to the output end of the cooling device 3, and the output end of the negative pressure device 2 is connected to the air inlet 15, so that the air inlet 15 is connected to the output end of the cooling device 3 through the negative pressure device 2. The negative pressure device 2 is mainly used to further drive the cold airflow generated by the cooling device 3 into the screen frame 11, so that the cold airflow can quickly fill the interior of the screen frame 11. Of course, considering the cold airflow transmission distance, the output end of the negative pressure device 2 and the air inlet 15 can also be connected by a conduit.
[0037] Working principle: such as Figure 2 As shown, the negative pressure device 2 and the cooling device 3 are activated, allowing the cold airflow to quickly enter the screen frame 11. Then, the vibration device 12 is activated. When the material enters the screen frame 11 from the feed inlet 13, it is separated by the vibrating screen 18. The material moves along direction A in the screen frame 11 to the discharge port 14. At the same time, the cold airflow is continuously input from the air inlet 15 and moves along direction B in the screen frame 11 to the exhaust port 16, so as to continuously exchange the air in the screen frame 11. That is, the material and the cold airflow move towards each other in the screen frame 11, or the directions of the material and the cold airflow in the screen frame 11 are opposite (or they can be cross-opposite), so that the material is cooled and screened at the same time. Finally, it is guided to the discharge port 14 for output through the guide plate 19. Therefore, the temperature of the output material is lower than that before it entered the screen frame 11, and the simultaneous cooling and screening is conducive to improving the efficiency of material output.
[0038] In some embodiments, such as Figure 3 As shown, the screen 18 is inclined inside the screen frame 11. The discharge port 14 and the air inlet 15 are located on the downstream side of the screen 18, and the feed port 13 and the exhaust port 16 are located on the upstream side of the screen 18. That is, when the material is vibrated and screened on the screen 18, the separated material can fall to the discharge port 14 more quickly, which can further optimize the material output method.
[0039] In some embodiments, two or more layers of screens 18 are provided in the screen frame 11, and the screens 18 are inclinedly arranged in the screen frame 11. In this embodiment, two layers of screens 18 are used as an example. The screens 18 are arranged sequentially along the direction of gravity, and the aperture of the two layers of screens 18 decreases sequentially along the direction of gravity. The downstream side of the screens 18 is an open structure, that is, the material separated on the screens 18 can be output to the lower screens 18 or the guide plate 19 along the downstream side by vibration and its own gravity, so as to achieve screening on both sides or multiple layers, thereby improving the screening accuracy and making the screening effect more obvious. For example, when material enters the upper screen 18, its aperture can separate materials with larger diameters, while smaller clumps of material pass through the upper screen 18 and enter the lower screen 18. The material then falls downstream from the upper screen 18 to the lower screen 18 or the discharge port 14, where it is further separated by the lower screen 18. Finally, it is guided to the discharge port 14 by the guide plate 19 to improve the looseness of the output material, which is suitable for situations where materials have different diameters.
[0040] In some embodiments, such as Figure 4 As shown, an embodiment structure is provided for screening materials and classifying them according to diameter. At least two discharge ports 14 are provided; this embodiment uses two discharge ports 14 as an example. The discharge ports 14 include discharge port a and discharge port b. The guide plate 19 includes a first guide plate 191 and a second guide plate 192. Both the first guide plate 191 and the second guide plate 192 are inclined. The downstream side of the first guide plate 191 is connected to discharge port a, and the downstream side of the second guide plate 192 is connected to discharge port b. The sidewall of the second guide plate 192 is located on the side of discharge port a near discharge port b, used to prevent material from moving to other parts of the screen frame 11, thus avoiding incomplete discharge. A screen 18 is disposed on the upper side of the first guide plate 191 and the second guide plate 192. The screen 18 is inclinedly disposed within the screen frame 11, and the downstream side of the screen 18 is close to the upstream side of the second guide plate 192 (or connected to the upstream side of the second guide plate 192). That is, in the direction of gravity, the projection of the downstream side of the screen 18 coincides with the projection of the second guide plate 192, so that the material separated on the screen 18 can fall along the screen 18 to the second guide plate 192 and finally be output from the discharge port b. The material that can pass through the screen 18 falls to the first guide plate 191 and is output from the discharge port a along the first guide plate 191, so as to achieve the separation of materials of different diameters. Of course, two or more layers of screens 18 can be added to further screen the material, and the number of material output discharge ports 14 is set according to the relative arrangement of the layers of screens 18, so as to further screen the output materials of different diameters and improve the screening accuracy.
[0041] The above description is merely a preferred embodiment of the present utility model. To simplify the description, not all possible combinations of the various technical features in the above embodiments have been described, and this is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A sieve with cooling function, the end directed in the direction of gravity is the lower side, characterized in that, The application relates to a screening device for screening materials, comprising a feeding port and a discharging port arranged oppositely, wherein the materials are input from the feeding port and screened to be output from the discharging port; the screening device further comprises an air inlet port and an air outlet port arranged oppositely and in communication; a cooling device is arranged for generating a cold air flow to act on the materials, and the output end of the cooling device is connected with the air inlet port; the cold air flow is input from the air inlet port into the screening device and output from the air outlet port, so that the materials are simultaneously cooled and screened to be output from the discharging port. The application further comprises a negative pressure device, wherein the input end of the negative pressure device is connected with the output end of the cooling device, and the output end of the negative pressure device is connected with the air inlet port, so that the air inlet port is connected with the output end of the cooling device through the negative pressure device. The materials are input from the feeding port into the screening device and moved in a first direction to be output from the discharging port, and the cold air flow is input from the air inlet port into the screening device and moved in a second direction to be output from the air outlet port, wherein the first direction is opposite to the second direction. In the first direction, the feeding port and the discharging port are arranged between the air inlet port and the air outlet port.
2. The sieve with cooling function according to claim 1, characterized in that, The screening device comprises a screen frame and a vibrating device arranged on the screen frame, and at least one layer of screen meshes is arranged in the screen frame; in the direction of gravity, the screen meshes are arranged between the feeding port and the discharging port, and the materials pass through the screen meshes to be output from the discharging port.
3. The sieve with cooling function according to claim 1, characterized in that, The screen meshes are arranged obliquely in the screen frame, and the discharging port and the air inlet port are arranged on the downstream side of the screen meshes, and the feeding port and the air outlet port are arranged on the upstream side of the screen meshes.
4. The sieve with cooling function according to claim 3, characterized in that, An inclined guide plate is arranged in the screen frame and arranged on the lower side of the screen meshes.
5. The sieve with cooling function according to claim 1, characterized in that, The screen meshes are arranged in multiple layers and arranged in the direction of gravity, and the aperture of each layer of the screen meshes is gradually reduced in the direction of gravity.
6. The sieve with cooling function according to claim 5, characterized in that, The screen frame is provided with a base and an elastic member, and the elastic member is arranged between the screen frame and the base.
7. The sieve with cooling function according to claim 6, characterized in that, In the first direction, the discharging port is closer to the feeding port than the air inlet port, and a baffle is arranged between the air inlet port and the discharging port.
8. The sieve with cooling function according to claim 5, characterized in that, 9. The sieve with cooling function according to claim 6, characterized in that, 10. The sizer with cooling function according to any one of claims 1-9, characterized in that,