Cyclone drying bed anti-accumulation device

Abstract

The utility model belongs to the technical field of cyclone drying beds, and specifically relates to a device for preventing material accumulation in cyclone drying beds, including a cylindrical cyclone drying bed, a feed port is arranged on the lower side wall, and a discharge port for discharging airflow and materials is arranged at the top center, and is characterized in that: a conical bottom is arranged at the bottom of the cyclone drying bed, an air distribution ring is arranged on the inner side wall of the bottom of the conical bottom, the air distribution ring is externally connected to an air inlet pipe for introducing high-pressure airflow into the interior thereof, and a plurality of air outlet holes are opened on the side wall of the air distribution ring, which are used to blow out high-pressure airflow to boil the material in the conical bottom to avoid sedimentation and accumulation of materials. By adding a material sedimentation prevention device at the bottom of the cyclone drying bed, the problem of material accumulation at the bottom of the existing drying bed is well solved; the cleaning cycle of the bottom of the bed is extended, and the amount of waste generated is reduced; the service life of the equipment is extended, the frequency of bed bottom replacement is reduced, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cyclone drying beds, and in particular relates to a device for preventing material accumulation in cyclone drying beds. Background Art

[0002] Polyvinyl chloride (PVC) is an important synthetic polymer plastic. During the production of polyvinyl chloride, PVC materials need to be dried, and a cyclone drying bed is generally used. However, the existing cyclone drying bed has a serious problem of material accumulation at the bottom. Since the temperature of the inlet material of the cyclone drying bed is as high as about 120°C, during a long production process, the PVC material accumulated at the bottom of the cyclone drying bed will agglomerate and decompose into hydrogen chloride, which will seriously affect the quality of PVC products and the service life of the equipment, resulting in a short cleaning cycle of the drying system. A large amount of accumulated material will be cleaned out each time the cleaning is carried out, and a large amount of labor costs are required. These accumulated materials can only be treated as waste, resulting in serious waste of energy and cost. Therefore, a cyclone drying bed anti-accumulation device is urgently needed to solve the problem of material accumulation at the bottom of the existing drying bed. Utility Model Content

[0003] In view of the above situation, the utility model provides a cyclone drying bed material accumulation prevention device, which can effectively solve the problem of material accumulation at the bottom of the existing cyclone drying bed by adding a material sedimentation prevention device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The device for preventing material accumulation of a cyclone drying bed comprises a cylindrical cyclone drying bed, a material feed port is arranged on the lower side wall, a material discharge port for discharging airflow and material is arranged at the top center, a conical bottom is arranged at the bottom of the cyclone drying bed, an air distribution ring is arranged on the inner side wall of the bottom of the conical bottom, an air inlet pipe for introducing high-pressure airflow into the air distribution ring is connected to the outside of the air distribution ring, and a plurality of air outlet holes are opened on the side wall of the air distribution ring, which are used to blow out high-pressure airflow to boil the material in the conical bottom to avoid sedimentation and accumulation of material.

[0006] Furthermore, the air distribution ring is a circular air distribution pipe, and two air inlet pipes are symmetrically arranged on both sides of the bottom of the air distribution pipe. A plurality of air outlet holes are evenly opened above the side wall of the air distribution pipe along the direction of the high-pressure airflow. The high-pressure airflow is blown out through the air outlet holes to boil the material in the conical bottom of the cyclone drying bed to avoid deposition.

[0007] Furthermore, the air distribution ring includes a circular slope panel, the upper and lower edges of the slope panel are respectively sealed and welded to the inner wall of the conical bottom, and the enclosed space with a triangular cross-section formed between the slope panel and the conical bottom is the air distribution duct, and two circles of air outlet holes are respectively evenly distributed in a ring at the upper and lower edges of the slope panel, and the upper and lower circles of air outlet holes are arranged in a staggered manner along the radial direction of the conical bottom.

[0008] Furthermore, both air inlet pipes are provided with air inlet valves, the air inlet ends of the air inlet pipes are externally connected to a high-pressure blower or a compressed air network, and the air outlet ends of the air inlet pipes are through-connected to the air distribution pipe.

[0009] Furthermore, a cylindrical base is coaxially fixedly connected below the cyclone drying bed, a base is arranged below the base, the top edge of the base is fixedly welded to the conical bottom of the cyclone drying bed, and the bottom edge of the base is fixedly welded to the base.

[0010] Furthermore, an inspection door is provided on the side wall of the base, and a cleaning port is provided on the lower side wall of the cyclone drying bed, and a sealing cover is provided on the cleaning port.

[0011] The utility model also includes other components that enable it to be used normally, which are all conventional means in the field. In addition, devices or components not limited in the utility model, such as: a cyclone drying bed and its feed port, discharge port and conical bottom, as well as an air inlet pipe, air inlet valve, industrial air, high-pressure fan and compressed air pipeline network connected to the air distribution ring, all adopt the existing technology in the field.

[0012] The beneficial effects of the utility model are as follows:

[0013] The cyclone drying bed material accumulation prevention device provided by the utility model solves the problem of material accumulation at the bottom of the existing drying bed by adding a material sedimentation prevention device at the bottom of the cyclone drying bed; the cleaning cycle of the bed bottom is extended from about 30 days to about 60 days; the amount of waste generated is reduced from about 30 kilograms per cleaning to about 3 kilograms; at the same time, the service life of the cyclone drying bed is extended from the original replacement of the bed bottom every 2 years to more than 3 years. In addition, since the frequency of waste cleaning and bed bottom replacement is reduced, the labor intensity of workers is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of the device for preventing material accumulation in a cyclone drying bed in the embodiment.

[0015] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0016] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the BB direction. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments.

[0018] Example

[0019] like Figure 1-2 As shown, the cyclone drying bed anti-accumulation device comprises a vertical cylindrical cyclone drying bed 1, a feed inlet 2 is arranged on the lower side wall, a bed bottom 3 is arranged at the bottom, and a discharge port 4 for discharging airflow and materials is arranged at the top center, a conical bottom 5 is arranged at the bottom of the cyclone drying bed, an air distribution ring 6 is arranged on the inner side wall of the bottom of the conical bottom, the air distribution ring is externally connected to an air inlet pipe 7 for introducing high-pressure airflow into the interior, and a plurality of air outlet holes 8 are opened on the side wall of the air distribution ring for blowing out high-pressure airflow to boil the material in the conical bottom to avoid sedimentation and accumulation of materials.

[0020] The air distribution ring is a circular air distribution pipe, and two air inlet pipes are symmetrically arranged on both sides of the bottom of the air distribution pipe. A plurality of air outlet holes are evenly opened above the side wall of the air distribution pipe along the direction of the high-pressure airflow. The high-pressure airflow is blown out through the air outlet holes to boil the material in the conical bottom of the cyclone drying bed to avoid deposition.

[0021] like Figure 3 As shown, the air distribution ring includes a circular slope panel 9, the upper and lower side edges of the slope panel are respectively sealed and welded to the inner wall of the conical bottom, and a closed space with a triangular cross-section formed between the slope panel and the conical bottom is the air distribution duct, and two circles of air outlet holes are respectively evenly distributed in a ring at the upper and lower edges of the slope panel, and the upper and lower circles of air outlet holes are arranged in a triangular staggered manner along the radial direction of the conical bottom.

[0022] Both air inlet pipes are provided with air inlet valves 10. The air inlet end of the air inlet pipe is externally connected to a high-pressure blower or a compressed air network, and the air outlet end of the air inlet pipe is through-connected with the air distribution pipe. Industrial air in the existing production system is introduced into the air distribution pipe. On the one hand, the material in the conical bottom of the cyclone drying bed can be boiled to avoid sedimentation and accumulation of materials. On the other hand, the relatively low temperature of the industrial air can also achieve a certain cooling effect.

[0023] A cylindrical base 11 is coaxially fixedly connected to the bottom of the cyclone drying bed, a base 12 is arranged below the base, the top edge of the base is fixedly welded to the conical bottom of the cyclone drying bed, and the bottom edge of the base is fixedly welded to the base.

[0024] An inspection door 13 is provided on the side wall of the base, and personnel can enter the internal space of the base through the inspection door to inspect and maintain the facilities at the bottom of the cyclone drying bed and replace the bed bottom. A cleaning port is provided on the lower side wall of the cyclone drying bed, and a sealing cover 14 is provided on the cleaning port. When necessary, the sealing cover can be opened to clean the conical bottom.

[0025] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the protection scope of the present invention.

Claims

1. A cyclone drying bed material accumulation prevention device, comprising a cylindrical cyclone drying bed, a feed port is arranged on the lower side wall, and a discharge port for discharging airflow and materials is arranged at the top center, characterized in that: The bottom of the cyclone drying bed is provided with a conical bottom, and an air distribution ring is provided on the inner side wall of the bottom of the conical bottom. The air distribution ring is externally connected to an air inlet pipe for introducing high-pressure airflow into the interior thereof, and a plurality of air outlet holes are provided on the side wall of the air distribution ring for blowing out high-pressure airflow to boil the material in the conical bottom to avoid sedimentation and accumulation of material.

2. The device for preventing material accumulation in a cyclone drying bed according to claim 1, characterized in that: The air distribution ring is a circular air distribution pipe, two air inlet pipes are symmetrically arranged on both sides of the bottom of the air distribution pipe, and a plurality of air outlet holes are evenly opened on the upper side wall of the air distribution pipe along the direction of the high-pressure airflow.

3. The device for preventing material accumulation in a cyclone drying bed according to claim 2, characterized in that: The air distribution ring includes a circular slope panel, the upper and lower side edges of the slope panel are respectively sealed and welded to the inner wall of the conical bottom, the enclosed space between the slope panel and the conical bottom forms an air distribution duct, and the upper and lower edges of the slope panel are respectively evenly distributed with two circles of air outlet holes, and the upper and lower circles of air outlet holes are arranged in a staggered manner along the radial direction of the conical bottom.

4. The device for preventing material accumulation in a cyclone drying bed according to claim 2, characterized in that: Both air inlet pipes are provided with air inlet valves, and the air inlet ends of the air inlet pipes are externally connected to a high-pressure blower or a compressed air pipe network.

5. The device for preventing material accumulation in a cyclone drying bed according to claim 1, characterized in that: A cylindrical base is coaxially fixedly connected below the cyclone drying bed, a base is arranged below the base, the top edge of the base is fixedly welded to the conical bottom of the cyclone drying bed, and the bottom edge of the base is fixedly welded to the base.

6. The device for preventing material accumulation in a cyclone drying bed according to claim 5, characterized in that: An inspection door is arranged on the side wall of the base.

7. The device for preventing material accumulation in a cyclone drying bed according to claim 1, characterized in that: A cleaning port is arranged on the lower side wall of the cyclone drying bed, and a sealing cover is arranged on the cleaning port.

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