Anti-clogging asphalt discharging device

Abstract

The utility model relates to an anti -blocking asphalt discharging device, including asphalt tank, discharge pipe and control valve, the bottom export of asphalt tank is equipped with the interlayer horn mouth that expands outward, the discharge pipe is the interlayer pipe structure, and the interlayer cavity is constituted by inner tube and outer tube, is provided with spiral guide vane in interlayer cavity, realizes even heat -tracing all the way through the integration heating channel and variable pitch guide vane design, effectively prevents asphalt solidification, adopts gradient heat exchange structure, and the easy heat dissipation section is strengthened heating, ensures that temperature field is even, realizes quick dredging and emergency repair through online cleaning structure and grease injection maintenance structure, prevents sticky coating and reduces flow resistance, reduces asphalt adhesion, and the overall structure is reasonable, and maintenance is convenient, and the equipment reliability is improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of anti-clogging asphalt discharge technology, specifically an anti-clogging asphalt discharge device. Background Technology

[0002] During the production and use of asphalt, high-temperature liquid asphalt needs to be discharged from the outlet at the bottom of the storage tank for loading, metering, or supplying to the next process. Asphalt is a typical temperature-sensitive material; when its temperature drops, its viscosity increases sharply until it solidifies.

[0003] In existing technologies, the asphalt discharge process mainly faces the following challenges: The discharge port at the bottom of the storage tank, the adjacent discharge valve, and nearby pipes are the areas where heat loss is most severe. Traditional passive insulation or external heating methods are inefficient and easily create "cold spots" in these areas, causing the asphalt to solidify at the beginning of the discharge process, making it impossible to discharge smoothly. Once a blockage occurs, maintenance personnel need to disassemble the insulation layer and flanges, and even use open flames to heat the blockage, a cumbersome and dangerous process that will interrupt operations for a long time. Existing equipment does not have a dedicated, convenient unblocking interface, making it impossible to quickly and accurately handle blockages online. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an anti-clogging asphalt discharge device.

[0005] This utility model provides the following technical solution: A clog-resistant asphalt discharge device includes an asphalt tank, a discharge pipe, and a control valve. The bottom outlet of the asphalt tank has an outwardly expanding jacketed bell mouth. The discharge pipe has a jacketed pipe structure, consisting of an inner pipe and an outer pipe forming a jacketed cavity, within which a spiral guide vane is installed. The control valve has a jacketed valve structure. The jacketed bell mouth, the jacketed cavity of the discharge pipe, and the jacketed valve body are sequentially connected to form an integrated heating channel. Online cleaning structures are installed on the pipe sections before and after the control valve. A grease injection maintenance structure is installed on the valve stem sealing part of the control valve.

[0006] Specifically, the pitch of the spiral guide vane at the outlet section of the discharge pipe is smaller than that at the inlet section.

[0007] Specifically, the inner wall of the discharge pipe and the surface of the inner cavity of the control valve are provided with an anti-stick coating.

[0008] Specifically, the online cleaning structure includes a dredging interface base welded to the pipe section, a valve core disposed within the base, and a quick connector for connecting external dredging equipment.

[0009] Specifically, the valve core is a ball valve, and the ball valve stem has an anti-blowout structure.

[0010] Specifically, the heat transfer medium inlet of the integrated heating channel is located at the lowest point of the discharge pipe, and the outlet is located at the highest point of the discharge pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a jacketed bell mouth, a jacketed pipe discharge pipe, and a jacketed valve control valve to form an integrated heating channel, uninterrupted heat tracing and insulation are achieved from the tank to the valve, effectively eliminating cold spots at the connection and solving the problem of low thermal efficiency in traditional insulation. The spiral guide vanes set in the jacket cavity of the discharge pipe significantly improve heat exchange efficiency, ensuring that the asphalt maintains a stable temperature and fundamentally preventing blockage caused by cooling and solidification. At the same time, the online cleaning structure set in the pipe sections before and after the control valve allows for quick unblocking without disassembling the pipeline in case of local blockage, greatly simplifying the maintenance process. The grease injection maintenance structure at the valve stem sealing part of the control valve ensures the long-term flexibility and reliability of the valve, further improving the online maintenance capability and operational reliability of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A cross-sectional view of the asphalt discharge device designed to prevent clogging.

[0014] In the picture: 1. Asphalt tank; 2. Bell mouth; 3. Discharge pipe; 4. Inner pipe; 5. Outer pipe; 6. Jacketed cavity; 7. Control valve; 8. Jacketed valve body jacket; 9. Valve stem; 10. Online cleaning structure; 11. Heat transfer medium inlet; 12. Heat transfer medium outlet; 13. Spiral guide vane; 14. Outlet section; 15. Inlet section. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] like Figure 1As shown, an anti-clogging asphalt discharge device includes an asphalt tank 1, a discharge pipe 3, and a control valve 7. The bottom outlet of the asphalt tank 1 is provided with an outwardly expanding jacketed bell mouth 2. The discharge pipe 3 is a jacketed pipe structure, consisting of an inner pipe 4 and an outer pipe 5 forming a jacketed cavity 6. The control valve 7 adopts a jacketed valve structure, with its valve body jacket 8 connected to the discharge pipe jacketed cavity 6. The jacketed bell mouth 2, the discharge pipe jacketed cavity 6, and the valve body jacket 8 are sequentially connected to form a continuous integrated heating channel. Online cleaning structures 10 are provided on the pipe sections before and after the control valve 7. The valve stem 9 of the control valve 7 is provided with a grease injection maintenance interface, which can periodically inject high-temperature sealing grease to enhance the seal and prevent jamming.

[0017] In the above embodiment, a spiral guide vane 13 welded into the cavity 6 of the discharge pipe interlayer is also included. The spiral guide vane 13 adopts a variable pitch design. The pitch of the outlet section 14 of the discharge pipe 3 is significantly smaller than that of the inlet section 15. This can increase the flow path and residence time of the heating medium in the easily heat-dissipating outlet section 14, and perform compensatory enhanced heating, thereby ensuring a uniform temperature field distribution throughout the pipeline and avoiding asphalt solidification caused by local overcooling.

[0018] In the above embodiments, a polytetrafluoroethylene anti-stick coating is sprayed on the inner wall of the inner pipe 4 of the discharge pipe 3 and the inner cavity channel surface of the control valve 7. This coating can effectively reduce the adhesion of the asphalt material, reduce flow resistance, prevent the asphalt from sticking and solidifying on the pipe wall and valve cavity inner wall, and further ensure smooth opening and closing.

[0019] In the above embodiments, an online cleaning structure 10 is also included. The online cleaning structure 10 includes a dredging interface base welded to the pipe section, a valve core disposed within the base, and a quick connector for connecting external dredging equipment. The dredging interface base is connected to the main pipeline by full penetration welding. Its internal cavity structure is optimized, with its axis perpendicular to the horizontal plane or at an acute angle to ensure that asphalt cannot remain inside. This allows for dredging without disassembling the pipeline in case of local blockage, greatly simplifying the maintenance process.

[0020] In the above embodiment, the valve core is a ball valve, and the ball valve stem has an anti-blowout structure. The anti-blowout structure cooperates with the limiting structure inside the valve body through the bottom shoulder of the ball valve stem to prevent the ball valve stem from being blown out during high-pressure operation, thus ensuring the reliability and safety of the dredging operation.

[0021] In the above embodiments, an integrated heating channel is also included. The heat transfer medium inlet 11 of the integrated heating channel is located at the lowest point of the discharge pipe 3, while the heat transfer medium outlet 12 is located at the highest point of the discharge pipe 3. This ensures that the heating medium can naturally and fully fill the entire heating channel and smoothly push any gas that may be generated to the outlet, effectively avoiding the "gas blockage" phenomenon and ensuring the stability and uniformity of heat exchange efficiency.

[0022] The working principle of this utility model is as follows: The heat transfer oil enters the integrated heating channel from the heat transfer oil inlet 11 at the lowest point of the anti-clogging asphalt discharge device, flows sequentially through the discharge pipe jacket cavity 6, the valve body jacket 8, and the jacket bell mouth 2, and finally returns from the heat transfer oil outlet 12 at the highest point of the anti-clogging asphalt discharge device. The heat transfer oil continuously transfers heat to the inner pipe 4 of the discharge pipe 3 and the inner cavity of the control valve 7 and the jacket bell mouth 2 through heat conduction, realizing uninterrupted heat tracing and insulation from the tank to the valve, effectively eliminating cold spots at the connection.

[0023] The spiral guide vane 13 forms a spiral flow channel in the interlayer cavity 6, forcing the heat transfer oil to flow along the spiral path, significantly extending the heat exchange process and enhancing the turbulence effect. The variable pitch design makes the flow rate of the heat transfer oil relatively slow down in the outlet section 14 and prolong the residence time, realizing compensatory enhanced heating of the easily heat-dissipating section, ensuring uniform temperature distribution throughout the pipeline, and fundamentally preventing blockage caused by local cooling and solidification.

[0024] When a pipe becomes blocked, the operator connects the external unblocking equipment to the quick connector of the online cleaning structure 10 and opens the built-in ball valve. High-pressure, high-temperature medium is injected into the pipe, first flushing the cleaning structure's own channels to achieve self-cleaning, and then directly impacting the blocked area. The blockage is cleared through the dual action of thermal shock melting and pressure shock crushing. The dual cleaning structures before and after the control valve form a "clamping" unblocking capability, allowing the selection of the optimal unblocking point for blockages before and after the control valve.

[0025] High-temperature sealing grease is periodically injected through the grease injection maintenance interface at the valve stem 9 sealing part to form a dynamic sealing barrier, preventing asphalt from seeping into the valve stem movement gap and ensuring the valve's long-term flexibility and reliability. The anti-stick coating reduces surface energy, decreasing the adhesion and flow resistance of asphalt on the inner wall of the discharge pipe 3 inner pipe 4 and the inner cavity of the control valve 7, further ensuring smooth discharge.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A clog-resistant asphalt discharge device, comprising an asphalt tank (1), a discharge pipe (3), and a control valve (7), characterized in that: The bottom outlet of the asphalt tank (1) is provided with an outwardly expanding jacketed bell mouth (2); the discharge pipe (3) is a jacketed pipe structure, consisting of an inner pipe (4) and an outer pipe (5) forming a jacketed cavity (6), and a spiral guide vane (13) is provided inside the jacketed cavity (6); the control valve (7) is a jacketed valve structure; the jacketed bell mouth (2), the jacketed cavity (6) of the discharge pipe and the jacketed valve body jacket (8) are connected in sequence to form an integrated heating channel; an online cleaning structure (10) is provided on the front and rear pipe sections of the control valve (7); a grease injection maintenance structure is provided on the sealing part of the valve stem (9) of the control valve (7).

2. The anti-clogging asphalt discharge device according to claim 1, characterized in that: The pitch of the spiral guide vane (13) in the outlet section (14) of the discharge pipe (3) is smaller than that in the inlet section (15).

3. The anti-clogging asphalt discharge device according to claim 1, characterized in that: The inner wall of the inner tube (4) of the discharge pipe (3) and the surface of the inner cavity channel of the control valve (7) are provided with an anti-stick coating.

4. The anti-clogging asphalt discharge device according to claim 1, characterized in that: The online cleaning structure (10) includes a dredging interface base welded to the pipe section, a valve core disposed in the base, and a quick connector for connecting external dredging equipment.

5. The anti-clogging asphalt discharge device according to claim 4, characterized in that: The valve core is a ball valve, and the ball valve stem has an anti-blowout structure.

6. The anti-clogging asphalt discharge device according to claim 1, characterized in that: The heat transfer medium inlet (11) of the integrated heating channel is located at the lowest point of the discharge pipe (3), and the outlet (12) is located at the highest point of the discharge pipe (3).

Images