Stock bin cleaning and ventilating system
By setting up inclined ventilation ring pipes and inclined pipe structures in the silo, ventilation dead corners and purge blind spots are eliminated, the problem of accumulation of impurities and resin materials is solved, and the safety and ventilation effect of the silo are improved.
Patent Information
- Application Number
- CN202422908114.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The presence of ventilation dead corners and conical bottom purge blind spots in synthetic resin storage silos leads to the accumulation of impurities and resin materials, contaminating the product and increasing the risk of explosion.
A silo cleaning ventilation system is designed, which adopts an inclined ventilation ring pipe and an inclined pipe structure. The ventilation branch pipe is inclined and a downward-inclined purge port is provided at the end of the inclined pipe to eliminate ventilation dead corners and purge blind spots. Impurities move from high places to low places and are discharged through the purge port.
Completely eliminates ventilation dead corners and purge blind spots at the conical bottom, preventing impurities and resin materials from contaminating the product, reducing the possibility of explosion accidents and improving safety.
Smart Images
Figure CN223421440U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of synthetic resin production and storage, in particular to a silo cleaning and ventilation system. Background Art
[0002] During storage, synthetic resins often volatilize flammable materials such as ethylene, propylene, butene, hexene, and octene. These flammable materials accumulate in the storage silo, forming an explosive environment that can easily lead to fire and explosion accidents. Therefore, a ventilation pipeline is set at the bottom of the synthetic resin storage silo, and compressed air is introduced into the silo as a purge wind to blow out the flammable materials volatilized by the synthetic resin. The main air duct of the ventilation pipeline is a ventilation ring pipe welded to the silo wall. After the purge air enters the ring pipe, it enters the silo through the circular ventilation branch pipe welded on the inner wall of the silo. However, if Figure 1 As shown, during the silo blowing process, the blowing air along Figure 1 The path indicated by the middle arrow enters the silo, which will form a ventilation dead corner area at the bottom of the ventilation ring pipe ( Figure 1 (shaded area). Figure 2 As shown in the figure, the dust and other impurities carried by the purge air and the resin material returned from the silo (along the Figure 2 Impurities and colored particles can accumulate in this blind spot over time (as shown by the middle dashed line). When the purge air is turned on and off, or when air volume fluctuates, these impurities and colored particles can enter and contaminate the product. Furthermore, because the purge air does not pass through the conical bottom of the silo, it becomes a purge blind spot. Combustible materials such as ethylene, propylene, butene, hexene, and octene volatilized from the synthetic resin within the conical bottom cannot be promptly purged, potentially creating an explosive environment and leading to silo fire and explosion. Utility Model Content
[0003] The technical problem to be solved by the utility model is to propose a silo cleaning and ventilation system, which can more thoroughly purge the silo, eliminate the dead corners in the pipeline and the purge blind spots at the conical bottom of the silo, prevent impurities and granular materials such as resin from accumulating in the dead corners and contaminating the product, and avoid fire and explosion.
[0004] The silo cleaning ventilation system described in the present invention includes a shell, which includes an upper cylinder and a lower conical bottom. Ventilation ring pipes are respectively provided on the outer side of the conical surface surrounding the outer wall of the cylinder and the conical bottom. An air inlet pipe is provided on the ventilation ring pipe, and a plurality of ventilation branch pipes are provided at the bottom of the ventilation ring pipe. The ventilation branch pipes include straight pipes and inclined pipes. The straight pipe is vertically arranged, and the top end of the straight pipe is connected to the ventilation ring pipe. The bottom end of the straight pipe is connected to the inclined pipe through a bend pipe. The inclined pipe points to the central axis of the shell and is arranged to be inclined downward. The inclined pipe passes through the shell and extends into the inner cavity of the shell. A purge port is opened at the lower end of the inclined pipe, and the purge port is an opening of a downward inclined bevel.
[0005] Preferably, an air outlet pipe is provided on the top of the shell.
[0006] Preferably, the included angle between the inclined pipe and the horizontal direction is 10-45°.
[0007] Preferably, the angle of the inclined surface of the blowing port is 30-60°.
[0008] Preferably, the opening end of the inclined pipe is coated with an anti-static coating to prevent the occurrence of tip discharge on the surface of the conductor at the end of the ventilation branch pipe, which affects the safety of the silo.
[0009] Preferably, the ventilation branch pipes are uniformly distributed around the central axis of the shell.
[0010] Preferably, the ventilation ring pipe is inclined, the higher end of the ventilation ring pipe is provided with an air inlet pipe, and the lower end of the ventilation ring pipe is provided with a ventilation branch pipe. The inclined arrangement is more conducive to the movement of impurities from the higher position to the lower position in the pipe, and finally discharged from the ventilation branch pipe.
[0011] Preferably, the ventilation ring pipe is a circular pipe, and the longitudinal section thereof is circular. The circular section is not conducive to the attachment of impurities to the inner wall of the pipe. If impurities enter the pipe, they will accumulate at the bottom and then be blown out of the pipe by the blowing air.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] 1. By optimizing the pipeline structure of the silo ventilation system, the ventilation dead angle area in the pipeline is completely eliminated, the accumulation and pollution of impurities and resin materials on the product are avoided, the blowing blind area at the conical bottom of the silo is eliminated, the safety is improved, and the possibility of fire and explosion accidents caused by the accumulation of combustible materials in the inner cavity of the conical bottom is greatly reduced.
[0014] 2. The inclined pipe is downwardly inclined, and the blowing port is an inclined surface opening. In this way, the ventilation branch pipe and the blowing port of the material silo section are downwardly inclined, and the material in the silo is not easy to backflow into the pipeline. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a schematic diagram of the ventilation pipeline structure of the prior art;
[0016] Figure 2 is a schematic diagram of the ventilation pipeline and the cross-sectional structure of the silo of the prior art;
[0017] Figure 3 is a schematic diagram of the structure of example 1;
[0018] Figure 4 is a schematic diagram of the structure of the ventilation ring pipe and the ventilation branch pipe of example 2;
[0019] Figure 5 is a schematic diagram of the top view structure of the ventilation ring pipe and the ventilation branch pipe of example 2;
[0020] Figure 6This is a structural diagram of Example 3;
[0021] In the figure: 1. Shell; 2. Cylinder; 3. Conical bottom; 4. Ventilation ring pipe; 5. Ventilation branch pipe; 6. Straight pipe; 7. Inclined pipe; 8. Purge port; 9. Air outlet pipe; 10. Air inlet pipe. DETAILED DESCRIPTION
[0022] The present invention will be described clearly and completely below with reference to the accompanying drawings.
[0023] Example 1
[0024] like Figure 3 As shown, the silo cleaning ventilation system described in the present invention includes a shell 1, an air outlet pipe 9 is provided on the top of the shell 1, the shell 1 includes an upper cylinder 2 and a lower conical bottom 3, and ventilation ring pipes 4 are respectively provided on the outside of the conical surface surrounding the outer wall of the cylinder 2 and the conical bottom 3. An air inlet pipe 10 is provided on the ventilation ring pipe 4, and a plurality of ventilation branch pipes 5 are provided at the bottom of the ventilation ring pipe 4. The ventilation branch pipes 5 are evenly distributed around the central axis of the shell 1. The ventilation branch pipes 5 include straight pipes 6 and inclined pipes 7. The straight pipe 6 is vertically arranged, and the top end of the straight pipe 6 is connected to the ventilation ring pipe 4, and the bottom end of the straight pipe 6 is connected to the inclined pipe 7 through a bend pipe. The inclined pipe 7 points to the central axis of the shell 1 and is tilted downward. The inclined pipe 7 passes through the shell 1 and extends into the inner cavity of the shell 1. The open end of the inclined pipe 7 is coated with an anti-static coating, and a purge port 8 is provided at the lower end of the inclined pipe 7. The purge port 8 is a downward-inclined bevel opening.
[0025] The working process is as follows: the purge air enters the ventilation ring pipe 4 from the air inlet pipe 10, then enters the ventilation branch pipe 5, and is blown out from the purge port 8 to purge the inner cavity of the cylinder 2 and the inner cavity of the conical bottom 3, and the purge air is discharged from the air outlet pipe 9.
[0026] Example 2
[0027] like Figure 4 、 Figure 5 As shown, based on Example 1, the angle between the inclined tube 7 and the horizontal direction is 20°, and the angle of the bevel surface of the purge port 8 is 45°.
[0028] Example 3
[0029] like Figure 6 As shown, based on Example 1, the ventilation ring duct 4 is tilted, with an air inlet pipe 10 located at the higher end and a ventilation branch pipe 5 located at the lower end. The ventilation ring duct 4 is a circular tube with a circular longitudinal cross-section. This arrangement in Example 3 further facilitates the discharge of impurities that enter the ventilation ring duct 4 and prevents their accumulation within the tube.
Claims
1. A silo cleaning and ventilation system, comprising a housing (1), wherein the housing (1) comprises an upper cylinder (2) and a lower conical bottom (3), characterized in that: Ventilation ring pipes (4) are respectively provided on the outer side of the conical surface surrounding the outer wall of the cylinder (2) and the conical bottom (3). An air inlet pipe (10) is provided on the ventilation ring pipe (4). A plurality of ventilation branch pipes (5) are provided at the bottom of the ventilation ring pipe (4). The ventilation branch pipes (5) include straight pipes (6) and inclined pipes (7). The straight pipes (6) are vertically arranged. The top end of the straight pipes (6) is connected to the ventilation ring pipe (4). The bottom end of the straight pipes (6) is connected to the inclined pipes (7) through a bend pipe. The inclined pipes (7) point to the central axis of the shell (1) and are arranged to be inclined downward. The inclined pipes (7) pass through the shell (1) and extend into the inner cavity of the shell (1). A purge port (8) is provided at the lower end of the inclined pipe (7). The purge port (8) is an opening of a downwardly inclined beveled surface.
2. The silo cleaning and ventilation system according to claim 1, characterized in that: An air outlet pipe (9) is provided on the top of the shell (1).
3. The silo cleaning and ventilation system according to claim 1, characterized in that: The angle between the inclined tube (7) and the horizontal direction is 10-45°.
4. The silo cleaning and ventilation system according to claim 1, characterized in that: The bevel angle of the purge port (8) is 30-60°.
5. The silo cleaning and ventilation system according to claim 1, characterized in that: The open end of the inclined tube (7) is coated with an antistatic coating.
6. The silo cleaning and ventilation system according to claim 1, characterized in that: The ventilation branches (5) are evenly distributed around the central axis of the shell (1).
7. The silo cleaning and ventilation system according to claim 1, characterized in that: The ventilation ring pipe (4) is arranged at an angle, an air inlet pipe (10) is provided at the higher end of the ventilation ring pipe (4), and a ventilation branch pipe (5) is provided at the lower end of the ventilation ring pipe (4).
8. The silo cleaning and ventilation system according to claim 1, characterized in that: The ventilation ring pipe (4) is composed of a circular pipe, and its longitudinal section is circular.