Asphalt heat preservation storage tank

Abstract

The utility model discloses an asphalt heat preservation storage tank, and relates to the technical field of asphalt heat preservation equipment, the asphalt heat preservation storage tank comprises an outer storage tank (13) and an inner storage tank (17) sleeved inside the outer storage tank (13), a hole is arranged between the outer storage tank (13) and the inner storage tank (17) to form a sealed cavity, the sealed cavity is provided with an inlet circulation interface (3) and an outlet circulation interface (8), and the inlet circulation interface (3) is communicated with the outlet circulation interface (8). The sealing cavity is filled with a heat preservation and heat transfer medium, and a heating rod is detachably connected into the sealing cavity. The asphalt heat preservation storage tank effectively solves the problems that a traditional heat conduction oil furnace asphalt storage tank is uneven in heating and heat preservation, large in heat energy loss and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt insulation equipment, in particular to an asphalt insulation storage tank. Background Art

[0002] Liquid hot asphalt is an important raw material in the asphalt mixture production process. Normally, the industry uses a high-power thermal oil furnace to heat and melt asphalt to achieve the use state. This heating method has a large heat supply and is suitable for mass production. However, the heating process of the thermal oil furnace takes 3 to 4 hours, which will affect the production efficiency of the asphalt mixing plant to a certain extent. If it encounters important holidays, major events, and night standby to undertake emergency support tasks, it is necessary to start a high-power thermal oil boiler for a long time to ensure that it is always ready for production, which greatly increases the operating costs. This heating method is relatively single and highly dependent on fossil fuels, which is not conducive to enterprises to adjust according to demand.

[0003] At present, asphalt mixing plants mainly pump hot liquid asphalt to large-capacity asphalt storage tanks by "pre-heating → pre-storage" to avoid the "production gap" caused by heating asphalt during the production of asphalt mixtures, so as to ensure the production timeliness of the asphalt plant and improve the emergency response capability. However, the boiler still needs to be started for a long time to ensure the working performance of the hot liquid asphalt in the storage tank, so this solution cannot solve the problem of long-term operation of high-power thermal oil boilers.

[0004] Current energy prices are high, and the prices of different energy sources vary greatly at different times and spaces. If an asphalt insulation and heating equipment can be designed that can simultaneously meet a variety of different heating and insulation methods, it will also help companies reduce costs and increase efficiency, and enhance industry competitiveness.

[0005] In addition, the thermal oil pan heating and insulation device commonly used at this stage can only directly heat the asphalt in a local area. The thermal oil pan is set in a relatively single area and cannot be moved. Other areas need to be heated and insulated through heat conduction between the asphalt and convection generated by the stirring equipment, which means that it is impossible to provide a uniform and effective heating method for the entire tank of asphalt, which is not conducive to uniform heating and reasonable preservation of the asphalt.

[0006] At the same time, the heat energy of the traditional thermal oil asphalt storage tank circulates outside the tank, and the thermal oil disc will produce obvious heat loss during the circulation outside the tank. Even if a heat recovery device is installed, high economy cannot be guaranteed.

[0007] In addition, the heating device of the traditional heat transfer oil pan asphalt storage tank is installed inside the storage tank. Once the equipment is damaged or the pipeline is ruptured, the heat transfer oil in the pipe will contaminate the asphalt in the tank, causing unnecessary losses. At the same time, the inspection and maintenance of traditional equipment are complicated, and it is necessary to empty the asphalt storage tank and manually climb inside for inspection, which is dangerous and increases the difficulty of equipment inspection.

[0008] In summary, how to effectively solve the problems of uneven heating and insulation of asphalt storage tanks in traditional thermal oil furnaces and large heat energy loss is an issue that technical personnel in this field urgently need to solve. Utility Model Content

[0009] The utility model aims to provide an asphalt insulation storage tank, which effectively solves the problems of uneven heating and insulation, large heat energy loss and the like of the asphalt storage tank of the traditional thermal oil furnace.

[0010] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0011] An asphalt insulation storage tank comprises an outer storage tank and an inner storage tank mounted inside the outer storage tank, wherein a gap is provided between the outer storage tank and the inner storage tank to form a sealed cavity, wherein the sealed cavity is provided with an inlet circulation interface and an outlet circulation interface, wherein the sealed cavity is filled with an insulation heat transfer medium, wherein a heating rod is detachably connected to the sealed cavity.

[0012] Optionally, a connecting plate is provided on the top surface of the inner storage tank, the diameter of the connecting plate is larger than the outer diameter of the inner storage tank, the connecting plate is provided with an upper shaft seal at the edge of the bottom surface exceeding the inner storage tank, the diameter of the connecting plate is equal to the inner diameter of the outer storage tank, the top surface of the outer storage tank is provided with a step surface, the connecting plate is connected to the step surface through the upper shaft seal, and a sliding roller is installed on the bottom surface of the connecting plate at a position corresponding to the step surface.

[0013] Optionally, the inlet circulation interface is opened on the connecting disk in the area corresponding to the sealing cavity, the number of the inlet circulation interfaces is multiple, and the multiple inlet circulation interfaces are evenly distributed in the circumferential direction of the connecting disk, and the inner diameter of the step surface is smaller than the outer pitch circle of the inlet circulation interface.

[0014] Optionally, the middle and lower parts of the outer wall of the inner storage tank are provided with limiting rings, and the limiting rings are provided with limiting holes corresponding to the vertical projection of the inlet circulation interface. The heating rod is vertically inserted into the limiting hole from the inlet circulation interface, and the inlet circulation interface is sealed and connected to the heating rod.

[0015] Optionally, the external storage tank is connected to a driving device, and the driving device controls the rotation of the external storage tank.

[0016] Optionally, the driving device includes a belt gear arranged on the outside of the outer storage tank along the circumferential direction, a belt connected to the belt gear, and a motor connected to the belt.

[0017] Optionally, the external storage tank includes an upper tank shell and a lower tank shell connected to the upper tank shell via a lower shaft seal, and the driving device is connected to the upper tank shell.

[0018] Optionally, it further comprises a tank support, wherein a pulley is provided on the inner side of the tank support, the pulley is rollingly connected to the outer wall of the upper tank shell, and the lower tank shell is mounted on a tank bracket of the tank support.

[0019] Optionally, a spiral blade is arranged on the inner wall of the outer storage tank, and a gap is provided between the inner side of the spiral blade and the outer wall of the inner storage tank.

[0020] Optionally, a vacuum pump connected to the vacuum interface of the external storage tank is also included.

[0021] The asphalt insulation storage tank provided by the utility model is divided into an outer storage tank and an inner storage tank. The size of the outer storage tank is larger than that of the inner storage tank. The inner storage tank is sleeved inside the outer storage tank. A gap is left between the outer storage tank and the inner storage tank, and the gap space forms a sealed cavity.

[0022] The sealed cavity is provided with an inlet circulation interface and an outlet circulation interface, and the sealed cavity is filled with a heat-insulating medium, which insulates the asphalt and other media in the inner storage tank. Specifically, the heat-insulating medium such as heat-conducting oil at the first set temperature outside enters the sealed cavity from the inlet circulation interface, and when the heat-insulating medium is not needed or the temperature of the heat-insulating medium is lower than the second set temperature, the heat-insulating medium is discharged from the outlet circulation interface.

[0023] At the same time, a heating rod is connected to the sealed cavity, and the heating rod and the sealed cavity are detachably connected. When the heating rod is needed for heating, the heating rod is installed in the sealed cavity. When the heating rod is not needed for heating, the heating rod is taken out of the sealed cavity.

[0024] In a preferred embodiment, the heating rod is an electric heating device, such as an electric heating rod. When no heat pipe is provided inside the sealed cavity, the electric heating device is used for heating to avoid the situation where the heat transfer oil contaminates the asphalt in unexpected situations. The electric heating device can be withdrawn and replaced at any time, thereby improving the reliability of the electric heating module and enhancing the enterprise's risk resistance ability in unexpected situations.

[0025] It should be noted that the inner storage tank can be a conventional storage tank in the prior art, retaining the original self-heating structure of the storage tank, and can heat the medium in a separate sub-heating manner. A medium interface is left at the top of the inner storage tank, and the medium such as asphalt enters from the medium interface.

[0026] The advantage of the utility model is that it has multiple heating and heat preservation modes, avoiding dependence on a specific energy source. Enterprises can switch different modes according to energy market conditions and their own production and working conditions to achieve cost reduction and efficiency improvement. At the same time, the selection of non-external circulation thermal oil heat preservation heating mode can effectively reduce the heat loss caused by external circulation. It effectively solves the shortcomings of uneven heating and heat preservation of asphalt storage tanks in traditional thermal oil furnaces, large heat energy loss, high equipment damage costs, and complex heating device maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of an asphalt insulation storage tank provided in a specific implementation manner of the utility model;

[0029] Figure 2 for Figure 1 A front view of

[0030] Figure 3 is a schematic diagram of a storage tank support;

[0031] Figure 4 is a schematic diagram of an external storage tank;

[0032] Figure 5 for Figure 4 A front view of

[0033] Figure 6 is a schematic diagram of the inner storage tank;

[0034] Figure 7 for Figure 6 A front view of

[0035] Figure 8 This is the assembly diagram of the asphalt insulation storage tank.

[0036] The following are marked in the accompanying drawings:

[0037] Upper shaft seal 1, tank bracket 2, inlet circulation interface 3, motor 4, belt 5, vacuum pump 6, vacuum interface 7, outlet circulation interface 8, lower shaft seal 9, pulley 10, tank bracket 11, ladder 12, outer tank 13, slide rail 14, spiral blade 15, belt gear 16, inner tank 17, electric heating rod 18, limit hole 19, inner and outer wall interface 20. DETAILED DESCRIPTION

[0038] The core of the utility model is to provide an asphalt insulation storage tank, which effectively solves the problems of uneven heating and insulation, large heat energy loss and the like of the asphalt storage tank of the traditional thermal oil furnace.

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Please refer to Figures 1 to 8 , Figure 1 A schematic diagram of the structure of an asphalt insulation storage tank provided in a specific implementation manner of the utility model; Figure 2 for Figure 1 A front view of Figure 3 is a schematic diagram of a storage tank support; Figure 4 is a schematic diagram of an external storage tank; Figure 5 for Figure 4 A front view of Figure 6 is a schematic diagram of the inner storage tank; Figure 7 for Figure 6 A front view of Figure 8 This is the assembly diagram of the asphalt insulation storage tank.

[0041] In a specific embodiment, the asphalt insulation storage tank provided by the utility model includes an outer storage tank 13 and an inner storage tank 17 mounted inside the outer storage tank 13, and there is a gap between the outer storage tank 13 and the inner storage tank 17 to form a sealed cavity, the sealed cavity is provided with an inlet circulation interface 3 and an outlet circulation interface 8, the sealed cavity is filled with a thermal insulation heat transfer medium, and a heating rod is detachably connected to the sealed cavity.

[0042] In the above structure, the asphalt insulation storage tank is divided into two parts: an outer storage tank 13 and an inner storage tank 17. The size of the outer storage tank 13 is larger than that of the inner storage tank 17, and the inner storage tank 17 is mounted inside the outer storage tank 13. A gap is left between the outer storage tank 13 and the inner storage tank 17, and the gap space forms a sealed cavity.

[0043] The sealed cavity is provided with an inlet circulation interface 3 and an outlet circulation interface 8. The sealed cavity is filled with a heat-insulating medium, and the asphalt and other media in the inner storage tank 17 are insulated by the heat-insulating medium. Specifically, the heat-insulating medium such as heat-conducting oil at the first set temperature outside enters the sealed cavity from the inlet circulation interface 3. When the heat-insulating medium is not needed or the temperature of the heat-insulating medium is lower than the second set temperature, the heat-insulating medium is discharged from the outlet circulation interface 8. Heat-conducting oil is evenly poured into the outer layer of the asphalt storage tank to achieve uniform circulation heating of the entire asphalt storage tank, ensuring that the asphalt at each height can absorb enough heat to avoid repeated local heating for a long time.

[0044] At the same time, a heating rod is connected to the sealed cavity, and the heating rod and the sealed cavity are detachably connected. When the heating rod is needed for heating, the heating rod is installed in the sealed cavity, and when the heating rod is not needed for heating, the heating rod is taken out of the sealed cavity. The two functions of the heating rod and the external circulation of the heat preservation heating medium can be used simultaneously or separately, depending on the actual application.

[0045] In a preferred embodiment, the heating rod is an electric heating device, such as the electric heating rod 18. When no heat pipe is provided inside the sealed cavity, the electric heating device is used for heating to avoid the situation where the heat transfer oil contaminates the asphalt in unexpected circumstances. The electric heating device can be withdrawn and replaced at any time, thereby improving the reliability of the electric heating module and enhancing the enterprise's risk resistance in unexpected circumstances.

[0046] It should be noted that the inner storage tank 17 can be a conventional storage tank in the prior art, retaining the original self-heating structure of the storage tank, and can heat the medium in a separate sub-heating manner. A medium interface is left at the top of the inner storage tank 17, and the medium such as asphalt enters from the medium interface.

[0047] The asphalt insulation storage tank provided by the utility model has two heating and heat preservation modes: heat transfer oil circulation and heating rod. It can be connected to an external boiler to realize rapid circulation heating of the heat transfer oil, or it can close the circulation system and realize non-circulation heat transfer oil heating and heat preservation through the inserted electric heating rod. It provides a variety of heating and heat preservation methods with different principles, different measures, and different effects, meeting the needs of enterprises for diversified production methods, avoiding dependence on a single energy source, and providing additional protection in unexpected situations. It is compatible with external circulation of heat transfer oil and also supports self-circulation in the heat transfer oil tank. After turning on the internal circulation function, it can avoid the loss of heat energy during the external circulation process, improve energy utilization, and also save the purchase, operation and maintenance costs of some waste heat utilization devices. A double-layer design is adopted, with the inner storage tank 17 storing asphalt and the outer storage tank 13 heating and heat preservation. The inner and outer storage tanks 13 are independent of each other, and the functions of each part are independent and do not interfere with each other. During maintenance, the inner storage tank 17 can be lifted out for maintenance by a crane, which improves the efficiency and safety of maintenance and is beneficial to the subsequent equipment maintenance, reduces the cost of use, avoids the contamination of the asphalt in the storage tank under unexpected circumstances, improves the safety of the structure, and avoids the situation in traditional asphalt storage tanks where the heat transfer oil pan is heated in a fixed position for a long time, resulting in uneven heating of the asphalt, so that the entire tank body can be heated evenly.

[0048] The above-mentioned asphalt insulated storage tank is only a preferred solution and is not limited to it. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation methods. A connecting plate is provided on the top surface of the inner storage tank 17. The diameter of the connecting plate is larger than the outer diameter of the inner storage tank 17. The connecting plate is provided with an upper shaft seal 1 at the edge of the bottom surface exceeding the inner storage tank 17. The diameter of the connecting plate is equal to the inner diameter of the outer storage tank 13. The top surface of the outer storage tank 13 is provided with a step surface. The connecting plate is connected to the step surface through the upper shaft seal 1. The bottom surface of the connecting plate is provided with a sliding roller at a position corresponding to the step surface.

[0049] In a specific embodiment, a connection plate is provided on the top surface of the inner storage tank 17, and a medium interface is provided on the connection plate, so that it is easy to add medium into the inner storage tank 17, and the amount of added medium is the largest. The diameter of the connection plate is larger than the outer diameter of the inner storage tank 17, and the connection plate on the top of the inner storage tank 17 is cantilevered outward.

[0050] An upper shaft seal 1 is provided at the edge of the cantilevered bottom surface of the connecting plate beyond the inner storage tank 17, and a step surface is provided on the top surface of the outer storage tank 13. The connecting plate is connected to the step surface through the upper shaft seal 1, and is sealed by the upper shaft seal 1 to ensure the sealing performance of the sealed cavity surrounded by the outer wall of the inner storage tank 17, the inner wall of the outer storage tank 13, the upper connecting plate, and the lower connecting surface.

[0051] Optionally, the diameter of the connecting disk is equal to the inner diameter of the outer storage tank 13, and the connecting disk fits tightly with the outer storage tank 13, further improving the sealing performance of the sealed cavity.

[0052] The bottom surface of the connection plate is provided with sliding rollers at positions corresponding to the step surfaces, and a slide rail 14 is provided on the top step surface of the outer storage tank 13 to achieve relative movement of the inner and outer storage tanks 13, ensuring that the inner is static and the outer is dynamic.

[0053] On the basis of the above-mentioned specific embodiments, the inlet circulation interface 3 is opened on the connecting disk in the area corresponding to the sealing cavity, the number of the inlet circulation interfaces 3 is multiple, and the multiple inlet circulation interfaces 3 are evenly distributed in the circumferential direction of the connecting disk, and the inner diameter of the step surface is smaller than the outer pitch circle of the inlet circulation interface 3.

[0054] In a specific embodiment, the circulation inlet interface 3 is opened on the connection plate in the area corresponding to the sealed cavity. The circulation inlet interface 3 is at the upper part of the sealed cavity, which is convenient for injecting the heat preservation and heat transfer medium.

[0055] There are multiple circulation inlet interfaces 3, which are evenly distributed in the circumferential direction of the connecting disk. Multiple circulation inlet interfaces 3 can be filled with thermal insulation and heat transfer medium at the same time, thereby increasing the injection speed of the thermal insulation and heat transfer medium in the sealed cavity. Thermal insulation and heat transfer medium are added in all directions at the same time, and the heating speed of the inner storage tank 17 in all directions is more uniform.

[0056] At the same time, the inner diameter of the step surfaces of the multiple inlet circulation interfaces 3 is smaller than the outer pitch circle of the inlet circulation interfaces 3, the step surfaces do not block the inlet circulation interfaces 3, the inlet circulation interfaces 3 are fully open, and the filling flow of the inlet circulation interfaces 3 is relatively large.

[0057] Based on the above-mentioned specific embodiments, the middle and lower parts of the outer wall of the inner storage tank 17 are provided with limiting rings, and the limiting rings are provided with limiting holes 19 corresponding to the vertical projection of the inlet circulation interface 3. The heating rod is vertically inserted into the limiting hole 19 from the inlet circulation interface 3, and the inlet circulation interface 3 is sealed and connected with the heating rod.

[0058] In a specific embodiment, a limiting ring is provided on the wall side of the inner storage tank 17, and a limiting hole 19 is provided on the limiting ring. The limiting holes 19 are equal in number to the inlet circulation interface 3, and the center lines coincide. The heating rod is vertically inserted into the limiting hole 19 from the inlet circulation interface 3. The limiting hole 19 and the inlet circulation interface 3 limit the heating rod to prevent the heating rod from tilting or other functional damages due to its excessive length during operation. The inlet circulation interface 3 is sealed and connected to the heating rod to ensure the sealing of the connection between the inlet circulation interface 3 and the heating rod.

[0059] In a preferred embodiment, the size of the limiting hole 19 is equal to that of the inlet circulation interface 3, which is equal to the diameter of the heating rod. The limiting hole 19, the inlet circulation interface 3 and the heating rod clearance match each other, which has a better limiting effect on the heating rod.

[0060] In another more reliable embodiment, based on any one of the above embodiments, the external storage tank 13 is connected to a driving device, and the driving device controls the rotation of the external storage tank 13 .

[0061] In a specific embodiment, the inner storage tank 17 is fixed differently, and the driving device controls the outer storage tank 13 to rotate, thereby realizing the flow of the thermal insulation heat transfer medium in the pores, so that the thermal insulation heat transfer medium of different temperatures at different positions can conduct heat transfer with different positions of the inner storage tank 17, so that the inner storage tank 17 is heated evenly.

[0062] Based on the above-mentioned specific embodiments, the driving device includes a belt gear 16 arranged along the circumferential direction on the outside of the outer storage tank 13 , a belt 5 connected to the belt gear 16 , and a motor 4 connected to the belt 5 .

[0063] In a specific embodiment, the driving device includes a belt gear 16, a belt 5, and a motor 4. The belt gear 16 is arranged on the outer wall of the outer storage tank 13, and the belt gear 16 is arranged in a circle along the circumferential direction. The belt 5 is connected to the belt gear 16, and the output shaft of the motor 4 is connected to the belt 5. The output shaft of the motor 4 rotates, and the belt gear 16 is driven to rotate through the belt 5, that is, the outer storage tank 13 is driven to rotate. The structure is simple, easy to connect, and the outer storage tank 13 rotates stably.

[0064] On the basis of the above-mentioned specific embodiments, the external storage tank 13 includes an upper tank shell and a lower tank shell connected to the upper tank shell through a lower shaft seal 9, and the driving device is connected to the upper tank shell.

[0065] In a specific embodiment, in order to ensure the sealing and normal rotation function of the outer storage tank 13, the outer storage tank 13 is divided into two parts, the upper tank shell and the lower tank shell, and a shaft seal gap is reserved in the middle. The connection between the upper tank shell and the lower tank shell of the outer storage tank 13 is provided with a lower shaft seal 9, and the upper tank shell and the lower tank shell are sealed and rotated relative to each other through the lower shaft seal 9. During operation, only the upper tank shell of the upper part rotates, and the lower tank shell of the lower part does not rotate. The lower tank shell has the same structure shape as the lower part of the inner storage tank 17, which is conical, ensuring that the lower tank shell is conveniently fixed to the lower part of the inner storage tank 17. Specifically, the lower end of the inner storage tank 17 is provided with an inner and outer wall interface 20, and the lower end of the lower tank shell has a connecting hole, and the inner and outer wall interface 20 is inserted into the connecting hole, and then fixed by a flange and bolts. The outer storage tank 13 is sleeved on the outside of the inner storage tank 17, and a bottom shaft seal is provided at the connection between the inner storage tank 17 and the lower tank shell to achieve a sealed connection. The design of separating inside and outside prevents the asphalt in the tank from being contaminated by accidents, ensuring uniform heating of the asphalt. It is also easy to assemble and disassemble and convenient for later maintenance.

[0066] Preferably, the outlet circulation interface 8 is arranged on the lower tank shell, so as to easily discharge the heat preservation and heat transfer medium in the sealed cavity.

[0067] On the basis of the above-mentioned specific embodiments, a storage tank support 2 is further included. A pulley 10 is provided on the inner side of the storage tank support 2. The pulley 10 is rollingly connected to the outer wall of the upper tank shell. The lower tank shell is installed on the tank bracket 11 of the storage tank support 2.

[0068] In a specific embodiment, the focus of the storage tank support 2 is the pulley 10 arranged on the side, and the material of the pulley 10 can be rubber, which is not easy to scratch the outer wall of the outer storage tank 13. The pulley 10 is rollingly connected with the outer wall of the upper tank shell. When the outer storage tank 13 rotates, the pulley 10 and the outer wall of the upper tank shell are in rolling friction, and the friction resistance is small, ensuring the normal rotation function of the outer storage tank 13.

[0069] At the same time, the lower tank shell is installed on the tank bracket 11 of the tank support 2. The tank bracket 11 has multiple circumferential brackets distributed in different positions. The surface of the tank bracket 11 is inclined, which is the same as the inclination angle of the conical lower tank shell. The tank bracket 11 supports the lower tank shell of the outer tank 13, lifts the outer tank 13, and fixes the lower tank shell of the outer tank 13.

[0070] In a preferred embodiment, the tank bracket 11 includes a cross bar fixedly connected to the tank support 2 and a support surface fixed at the end of the cross bar. The support surface of the tank bracket 11 is rotatable and can be adaptively adjusted according to the inclination angle of the lower tank shell of the external tank 13 to adapt to tanks with different inclination angles and expand the scope of application.

[0071] In a preferred embodiment, a ladder 12 is installed on the storage tank support 2, and the top of the outer storage tank 13 and the inner storage tank 17 can be reached by the ladder 12, so as to facilitate maintenance.

[0072] On the basis of the above-mentioned specific embodiments, the inner wall of the outer storage tank 13 is arranged with spiral blades 15, which divide the inner wall of the outer storage tank 13 into multiple areas, each area is provided with at least one inlet circulation interface 3, and the areas divided by the spiral blades 15 are vertically connected. The spiral blades 15 can be arranged in the vertical direction or vertically inclined. There is a gap between the inner side of the spiral blades 15 and the outer wall of the inner storage tank 17. The rotating blades play a role in driving the circulation of the heat transfer medium, realizing uniform circulation heating of the entire asphalt storage tank, ensuring that the asphalt at each height can absorb enough heat, and avoiding long-term local repeated heating.

[0073] In another more reliable embodiment, based on any of the above embodiments, it also includes a vacuum pump 6 connected to the vacuum interface 7 of the external storage tank 13.

[0074] In a specific embodiment,

[0075] An additional vacuum pump 6 is provided at the bottom of the outer storage tank 13 to realize the vacuum insulation function, and the heat transfer oil between the inner and outer walls of the storage tank and the exhaust of the vacuum pump 6 can be emptied to ensure the insulation demand of asphalt in a small amount and in a short time, thereby reducing energy consumption. The diversified design of heat transfer oil circulation heating, heating rod heating, vacuum insulation without heat source, and layered structure is combined to realize diversified insulation and heating methods.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] The above is a detailed introduction to the asphalt insulation storage tank provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. An asphalt insulation storage tank, characterized in that: The invention comprises an outer storage tank (13) and an inner storage tank (17) which is sleeved inside the outer storage tank (13); a gap is provided between the outer storage tank (13) and the inner storage tank (17) to form a sealed cavity; the sealed cavity is provided with an inlet circulation interface (3) and an outlet circulation interface (8); the sealed cavity is filled with a heat-insulating heat transfer medium; and a heating rod is detachably connected to the sealed cavity.

2. The asphalt insulation storage tank according to claim 1, characterized in that: The top surface of the inner storage tank (17) is provided with a connecting plate, the diameter of which is larger than the outer diameter of the inner storage tank (17), the connecting plate is provided with an upper shaft seal (1) at the bottom edge of the inner storage tank (17), the diameter of which is equal to the inner diameter of the outer storage tank (13), the top surface of the outer storage tank (13) is provided with a step surface, the connecting plate is connected to the step surface via the upper shaft seal (1), and a sliding roller is installed on the bottom surface of the connecting plate at a position corresponding to the step surface.

3. The asphalt insulation storage tank according to claim 2, characterized in that: The inlet circulation interface (3) is opened on the connection disk in an area corresponding to the sealing cavity, the number of the inlet circulation interfaces (3) is multiple, and the multiple inlet circulation interfaces (3) are evenly distributed in the circumferential direction of the connection disk, and the inner diameter of the step surface is smaller than the outer pitch circle of the inlet circulation interface (3).

4. The asphalt insulation storage tank according to claim 3, characterized in that: The middle and lower parts of the outer wall of the inner storage tank (17) are provided with limiting rings, and the limiting rings are provided with limiting holes (19) corresponding to the vertical projection of the inlet circulation interface (3). The heating rod is vertically inserted into the limiting hole (19) from the inlet circulation interface (3), and the inlet circulation interface (3) is sealed and connected to the heating rod.

5. The asphalt insulation storage tank according to claim 1, characterized in that: The outer storage tank (13) is connected to a driving device, and the driving device controls the outer storage tank (13) to rotate.

6. The asphalt insulation storage tank according to claim 5, characterized in that: The driving device comprises a belt gear (16) arranged along the circumferential direction outside the outer storage tank (13), a belt (5) connected to the belt gear (16), and a motor (4) connected to the belt (5).

7. The asphalt insulation storage tank according to claim 6, characterized in that: The external storage tank (13) comprises an upper tank shell and a lower tank shell connected to the upper tank shell via a lower shaft seal (9), and the driving device is connected to the upper tank shell.

8. The asphalt insulation storage tank according to claim 7, characterized in that: It also comprises a tank support (2), wherein a pulley (10) is provided on the inner side of the tank support (2), wherein the pulley (10) is rollingly connected to the outer wall of the upper tank shell, and the lower tank shell is mounted on a tank bracket (11) of the tank support (2).

9. The asphalt insulation storage tank according to claim 5, characterized in that: The inner wall of the outer storage tank (13) is provided with a spiral blade (15), and a gap is provided between the inner side of the spiral blade (15) and the outer wall of the inner storage tank (17).

10. The asphalt insulation storage tank according to any one of claims 1 to 9, characterized in that: It also includes a vacuum pump (6) connected to the vacuum interface (7) of the external storage tank (13).

Images