Rotary drying machine
By incorporating a filter screen and vibrating plate structure into the rotary dryer, the problem of blockage caused by plastic particles being blown out of the air outlet was solved, achieving stable operation of the equipment and efficient drying effect.
Patent Information
- Application Number
- CN202423031683.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In existing rotary drying equipment, dried plastic particles are easily blown out of the air outlet by the airflow, causing the air outlet to become blocked.
A filter screen is installed below the air outlet, and an inclined vibrating plate is installed below the filter screen. The airflow drives the vibrating plate to rotate, and the vibrating hammer strikes the filter screen to prevent plastic fragments or particles from clogging it. At the same time, a rotating rod and a stirring rod are installed inside the cylinder to disperse the material and increase the contact area between the material and the hot air.
It effectively prevents plastic fragments or particles from being blown out with the airflow, avoids filter clogging, and improves drying efficiency and equipment operation stability.
Smart Images
Figure CN223649602U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dry equipment technical field especially relates to a rotary dryer. BACKGROUND
[0002] Plastic garbage may need hundreds of years to decompose in the natural environment, and will cause long-term impact on soil, water and ecological system, so it is necessary to uniformly recycle and utilize the plastic in the garbage.
[0003] In the recycling process of plastic garbage, it needs to go through processes such as sorting, crushing, melting and extrusion molding. After sorting and crushing, the plastic garbage will form small plastic fragments or particles. However, due to the presence of moisture in the processing process, the crushed plastic particles will be stacked together in block shape, so it is necessary to dry the crushed plastic garbage.
[0004] The commonly used rotary drying equipment usually has an air inlet at the bottom and an air outlet at the top. The hot air used for drying moisture is finally blown out from the air outlet at the top. However, due to the light weight of the dried plastic fragments or particles, they may be blown out from the air outlet along with the airflow, causing the air outlet to be blocked. SUMMARY
[0005] In order to improve the situation that the dried plastic particles are blown out from the air outlet, causing the air outlet to be blocked, the application provides a rotary dryer.
[0006] The application provides a rotary dryer, which adopts the following technical scheme:
[0007] A rotary dryer comprises
[0008] A cylinder is vertically placed and has a discharge port at the bottom.
[0009] A rotating rod is rotationally connected to the bottom of the cylinder and coaxially arranged with the cylinder. A stirring rod is arranged on the outer periphery of the rotating rod.
[0010] The side wall of the bottom end of the cylinder is provided with an air inlet, and the side wall of the top end is provided with an air outlet. The cylinder is provided with a feeding pipe between the air inlet and the air outlet. A filter screen is arranged in the cylinder and located below the air outlet for filtering plastic fragments.
[0011] An inclined elastic plate is arranged below the filter screen. One end of the bottom of the elastic plate is hinged to the inner wall of the cylinder, and the other end of the top is provided with a vibrating hammer. An inclined elastic member is arranged between the elastic plate and the cylinder wall. The inclined direction of the elastic member is opposite to that of the elastic plate. The two ends of the elastic member are respectively connected to the elastic plate and the inner wall of the cylinder. The elastic plate is driven to rotate by the airflow to repeatedly hammer the filter screen.
[0012] Further, the elastic vibration plates are arranged at least two and symmetrically relative to the axis of the cylinder.
[0013] Further, the vibration hammer is made of rubber.
[0014] Further, the air inlet is arranged obliquely downward.
[0015] Further, the feeding pipe extends into the cylinder and is arranged obliquely downward, a partition cylinder is coaxially arranged in the cylinder, one end of the feeding pipe extends to the top of the partition cylinder, rotating blades are arranged on the outer periphery of the top of the rotating rod, and the rotating blades are located at the bottom of the partition cylinder.
[0016] Further, at least part of the rotating blades extends into the partition cylinder, and the inner diameter of the partition cylinder near one end of the bottom gradually shrinks from top to bottom.
[0017] Further, the outer periphery of the partition cylinder is fixed to the inner wall of the cylinder through a support rod, and the support rod is rotationally connected with a scattering blade.
[0018] Further, a scraper is arranged on the outer periphery of the rotating rod below the stirring rod.
[0019] In summary, the present application has the following beneficial effects:
[0020] By arranging the filter screen below the air outlet, when the airflow after drying is blown out from the air outlet, the filter screen can effectively intercept the plastic fragments or particles in the airflow to prevent the plastic fragments or particles from being blown out together with the airflow; meanwhile, the elastic vibration plate capable of rotating is arranged below the filter screen, since the airflow is blown upward, the airflow drives the elastic vibration plate to rotate upward in the process of being blown upward, when the elastic vibration plate rotates upward, the vibration hammer at one end of the top hammers the filter screen body from below the filter screen, so that the filter screen vibrates to remove the plastic fragments or particles remaining on the filter screen, avoiding the filter screen from being blocked after long time working, and the elastic member can keep the elastic vibration plate in a relatively horizontal state, so that the elastic vibration plate can be blown up by the airflow all the time. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a structural schematic view of the inside of the rotary dryer.
[0022] Mark explanation: 1, cylinder; 11, air inlet; 12, discharge port; 13, air outlet; 2, feeding pipe; 3, filter screen; 4, elastic vibration plate; 41, vibration hammer; 42, elastic member; 5, partition cylinder; 51, support rod; 52, scattering blade; 6, rotating rod; 61, rotating blade; 62, stirring rod; 63, scraper; 7, driving motor. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described below with reference to the drawings. The following describes a preferred one of the multiple possible embodiments of the present application, which is intended to provide a basic understanding of the present application, but is not intended to identify key or decisive elements or limit the scope of protection.
[0024] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of example embodiments can have different values.
[0025] Techniques, methods, and equipment known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate.
[0026] In the description of the present application, it should be noted that the circuits and electronic components and modules involved in the present application are all prior art, which can be fully realized by those skilled in the art without further description, and the content protected by the present application does not involve improvement of internal structure and method.
[0027] It should be further noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0028] The embodiments of the present application provide a rotary dryer, which refers to Figure 1 The rotary dryer includes a vertically placed cylinder 1, which is in the shape of a cylinder as a whole, and an air inlet 11 is formed on the side wall near the bottom end of the cylinder 1, and an air inlet pipe is communicated at the air inlet 11, which can be externally connected to a hot air blower and the like, so that hot air can enter the inside of the cylinder 1 from the bottom of the cylinder 1 through the air inlet 11, and the included angle between the air inlet pipe and the outer wall of the cylinder 1 is greater than 0 and less than 90°. In the embodiments of the present application, the air inlet 11 is inclined downward, which can be an inclination angle of 45°. The downward inclined air inlet 11 can effectively prevent the material inside the cylinder 1 from falling out of the air inlet 11, and the hot air blown from the bottom can blow up the material deposited at the bottom of the cylinder 1 for targeted drying. An outlet 12 is formed at the bottom of the cylinder 1, and the dried material falls out of the outlet 12.
[0029] The side wall of the cylinder body 1 at the top end is provided with an air outlet 13, hot air is blown into from the air inlet 11 at the bottom, and finally blown out from the air outlet 13 at the top, so that the hot air can dry the material from bottom to top. The cylinder body 1 is provided with a feeding pipe 2 between the air inlet 11 and the air outlet 13, one end of the feeding pipe 2 can be connected to a screw conveyor outside, for receiving the material and sending the material to the inside of the cylinder body 1, the other end of the feeding pipe 2 extends into the cylinder body 1, and the feeding pipe 2 is inclined downward as a whole, so that the internal material can fall by its own gravity.
[0030] A filter screen 3 is arranged in the cylinder body 1, and the filter screen 3 is horizontally fixed below the air outlet 13 for filtering plastic fragments. The model of the filter screen 3 can be selected according to the size of the actual plastic fragments or particles, so that the filter screen 3 can intercept as much plastic fragments or particles as possible to prevent them from being blown out of the air outlet 13.
[0031] Further, to prevent the filter screen 3 from being blocked, an inclined elastic vibration plate 4 is arranged below the filter screen 3, and the elastic vibration plate 4 can be made of a plate with a suitable size to have a larger stress area. One end of the bottom of the elastic vibration plate 4 is hinged to the inner wall of the cylinder body 1, and the rotation axis is horizontal, and one end of the top of the elastic vibration plate 4 is fixed with a vibration hammer 41. In order to make the elastic vibration plate 4 as horizontal as possible, so that the elastic vibration plate 4 has a larger area to be driven to rotate by the upward air flow when working, an inclined elastic element 42 is arranged between the elastic vibration plate 4 and the cylinder wall, the elastic element 42 can be a tension spring, and the two ends of the elastic element 42 are fixedly connected with the elastic vibration plate 4 and the inner wall of the cylinder body 1 respectively, and the elastic element 42 is also inclined and opposite to the inclined direction of the elastic vibration plate 4, so that the elastic element 42 can stably pull up the elastic vibration plate 4 to prevent the elastic vibration plate 4 from sagging due to its own gravity.
[0032] In the embodiment of the present application, the vibration hammer 41 is made of rubber material, so that the vibration hammer 41 has good elasticity. In working, the elastic vibration plate 4 is driven to rotate upward by the upward air flow, the rotating elastic vibration plate 4 drives the vibration hammer 41 to hammer the filter screen 3 upward, at this time the vibration hammer 41 drives the elastic vibration plate 4 to rotate downward due to its own gravity and the rebound force after impact, the elastic element 42 generates a restoring force under tension, and the upward air flow makes the elastic element 42 rotate upward again, thereby driving the vibration hammer 41 to reciprocatingly hammer the filter screen 3, the filter screen 3 vibrates under impact, effectively shaking off the residual plastic fragments or particles on the filter screen 3.
[0033] Further, the elastic vibration plate 4 is provided with at least two and is symmetrically distributed with respect to the axis of the cylinder body 1. The number of elastic vibration plates 4 can be increased according to the actual size of the inner diameter of the cylinder body 1, and the symmetrically distributed elastic vibration plates 4 enable the vibration hammer 41 to uniformly hammer the filter screen 3, thereby improving the efficiency of removing the residual material on the filter screen 3.
[0034] A separation cylinder 5 is coaxially arranged in the cylinder body 1, and the outer periphery of the separation cylinder 5 is fixed to the inner wall of the cylinder body 1 by a plurality of support rods 51 which are horizontally and spacedly arranged. The feeding pipe 2 extends to the top of the separation cylinder 5 at one end in the cylinder body 1, so that the material falling from the feeding pipe 2 can directly fall into the separation cylinder 5. The inner diameter of the separation cylinder 5 near the bottom end gradually shrinks from top to bottom, which is beneficial to the centralized falling of the material.
[0035] In order to further scatter the material gathered together, a rotating rod 6 is arranged in the cylinder body 1. The rotating rod 6 is vertically arranged, and one end of the bottom of the rotating rod 6 extends out of the cylinder body 1 and is coaxially fixed with the rotating output shaft of the driving motor 7. The outer periphery of one end of the top of the rotating rod 6 is fixed with a rotating blade 61, and the rotating blade 61 is located at the bottom position of the separation cylinder 5. In the embodiment, at least part of the rotating blade 61 extends into the separation cylinder 5. The material falling into the separation cylinder 5 is first scattered by the rotating blade 61, and then continues to fall into the space in the lower part of the cylinder body 1.
[0036] The outer periphery of the middle position of the rotating rod 6 is fixed with a stirring rod 62. The stirring rod 62 is arranged in three rows along the length direction of the rotating rod 6. From top to bottom, the length of the stirring rod 62 gradually increases, so that the stirring rod 62 can gradually and uniformly scatter the falling material, increase the contact area of the material and hot air, and improve the drying efficiency of the material. The rising airflow also flows upward along the outer wall of the separation cylinder 5. Therefore, a scattering blade 52 is further rotationally connected to the support rod 51. The scattering blade 52 is distributed on the path of the airflow rising, and the scattering blade 52 can automatically rotate under the driving of the airflow. The material which has been partially dried will gradually rise to the height of the scattering blade 52. The rotating scattering blade 52 can further scatter the material gathered together.
[0037] Further, in order to prevent the material from gathering at the bottom and adhering to the bottom of the cylinder body 1, a scraper 63 is fixed to the outer periphery of the bottom position of the rotating rod 6. The scraper 63 can rotate with the rotating rod 6, and constantly turn over the material adhered to the bottom of the cylinder body 1, thereby reducing the adhesion of the material.
[0038] The implementation principle of the rotary dryer in the embodiment is as follows: when the dried airflow is blown out from the air outlet 13, the filter screen 3 can effectively intercept the plastic fragments or particles in the airflow, preventing the plastic fragments or particles from being blown out together with the airflow; meanwhile, the elastic vibration plate 4 which can rotate is arranged below the filter screen 3. Since the airflow is blown upward, the airflow drives the elastic vibration plate 4 to rotate upward in the process of being blown upward. When the elastic vibration plate 4 rotates upward, the vibration hammer 41 at one end of the top will hammer the body of the filter screen 3 from below, so that the filter screen 3 vibrates, thereby removing the plastic fragments or particles remaining on the filter screen 3, avoiding the blockage of the filter screen 3 after long time working. The elastic member 42 can keep the elastic vibration plate 4 in a relatively horizontal state, so that the elastic vibration plate 4 can always be blown up by the airflow.
[0039] In this article, the front, back, up, down and other orientation words are defined by the position of the parts in the figure and the position of the parts relative to each other in the figure, just to express the technical scheme clearly and conveniently. It should be understood that they are relative concepts, which can be changed accordingly according to different ways of use and placement, and the use of the orientation words should not limit the scope of the application.
[0040] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.
[0041] The above is only the preferred embodiment of the application, and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.
Claims
1. A rotary dryer characterized by: The application relates to a plastic fragment processing device. A cylinder is vertically placed and provided with a discharging port at the bottom; A rotating rod is rotationally connected to the bottom of the cylinder and coaxially arranged with the cylinder, and stirring rods are arranged on the outer periphery of the rotating rod. The side wall of the bottom end of the cylinder is provided with an air inlet, the side wall of the top end is provided with an air outlet, a feeding pipe is arranged between the air inlet and the air outlet, a filter screen is arranged in the cylinder, the filter screen is located below the air outlet and used for filtering plastic fragments; An inclined elastic vibration plate is arranged below the filter screen, one end of the bottom of the elastic vibration plate is hingedly connected to the inner wall of the cylinder, a vibrating hammer is arranged at one end of the top of the elastic vibration plate, an inclined elastic element is arranged between the elastic vibration plate and the cylinder wall, the direction of the elastic element is opposite to that of the elastic vibration plate, the two ends of the elastic element are respectively connected to the elastic vibration plate and the inner wall of the cylinder, and the elastic vibration plate is driven to rotate by air flow to repeatedly hammer the filter screen.
2. The rotary dryer of claim 1, wherein: The elastic vibration plate is provided with at least two and is symmetrically distributed relative to the axis of the cylinder.
3. The rotary dryer of claim 1, wherein: The vibrating hammer is made of rubber.
4. The rotary dryer of claim 1, wherein: The air inlet is arranged in an inclined downward mode.
5. The rotary dryer of claim 1, wherein: The feeding pipe extends into the cylinder and is arranged in an inclined downward mode, a separation cylinder is coaxially arranged in the cylinder, one end of the feeding pipe extends to the top of the separation cylinder, rotating blades are arranged on the outer periphery of the top of the rotating rod, and the rotating blades are located at the bottom of the separation cylinder.
6. The rotary dryer as claimed in claim 5, characterized in that: At least part of the rotating blades extends into the separation cylinder, and the inner diameter of the separation cylinder near one end of the bottom gradually shrinks from top to bottom.
7. The rotary dryer of claim 5, wherein: The outer periphery of the separation cylinder is fixed to the inner wall of the cylinder through supporting rods, and scattering blades are rotationally connected to the supporting rods.
8. The rotary dryer of claim 1, wherein: Scraper plates are arranged on the outer periphery of the rotating rod below the stirring rods.