Asphalt heating, melting and filtering device

By designing a melting furnace and a device for conducting heat through carbon tubes, the limitations of traditional pot heating methods in terms of application scenarios have been solved, enabling safe and convenient asphalt melting operations and enhancing the safety and practicality of the device.

CN224494089UActive Publication Date: 2026-07-14JIANGSU GENERAL ROAD & BRIDGE MATERIALS TECHNOLOGY CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU GENERAL ROAD & BRIDGE MATERIALS TECHNOLOGY CO LTD
Filing Date
2025-08-25
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The traditional method of using an open-boiler to heat molten asphalt has limited application scenarios, especially posing safety hazards in humid or high-temperature environments, and making it inconvenient to transport molten asphalt.

Method used

Design a device that includes a melting furnace, carbon tubes, a melting chamber, a storage chamber, and a venting pipe. The carbon tubes conduct heat to melt asphalt particles and can be moved to the work position to discharge the molten asphalt. Filter holes, vent holes, and a flow guide shell are provided to improve safety and practicality.

Benefits of technology

It improves the safety and practicality of asphalt heating and melting, reduces the physical labor required for personnel handling, avoids the baking of personnel and goods by high temperatures, and enhances the mobility and protective measures of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an asphalt heating, melting, and filtering device, relating to the field of asphalt heating and melting. It includes a melting furnace, with a melting chamber and a storage chamber inside. The melting chamber has filter holes on its inner wall and bottom. A discharge pipe is connected to one side of the storage chamber. A carbon tube is installed inside the melting furnace, and a vent pipe is installed inside the carbon tube. This utility model allows the melting furnace to be moved to a suitable location. The burning coal conducts heat to the asphalt particles in the melting chamber through the carbon tube, causing the asphalt particles to gradually melt. When the storage chamber contains molten asphalt, the melting furnace can be moved to the location on the roof that needs repair. Then, the liquid-blocking plate is opened, and the molten asphalt is discharged from the discharge pipe. This reduces the physical effort required for personnel to handle molten asphalt, and the burning coal will not scorch personnel or other items, greatly increasing the safety and practicality of the melting furnace for heating and melting asphalt.
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Description

Technical Field

[0001] This utility model relates to the field of asphalt heating and melting, specifically an asphalt heating and melting filtration device. Background Technology

[0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a highly viscous organic liquid with good adhesion, water resistance, and corrosion resistance. It is widely used in road engineering, building waterproofing, and other fields, and is one of the important basic construction materials.

[0003] In roof leak repair work, workers often use molten asphalt and waterproof sheet materials together. This is because asphalt's excellent waterproof and sealing properties can effectively fill gaps and prevent water penetration, while the waterproof sheet material can provide physical protection, enhancing the integrity and durability of the waterproof structure. The two work together to form a continuous and stable waterproof barrier, greatly improving the quality and service life of roof waterproofing projects and meeting long-term waterproofing needs.

[0004] In practice, asphalt particles are often placed in a pot and heated with burning coal or charcoal to melt them. However, this method has obvious shortcomings and is limited in its application scenarios. For example, when there is standing water on the work surface, the burning coal spread on the ground is very easy to be extinguished due to the damp ground. Furthermore, if the work site is located on the roof of a building, the high temperature of the coal or charcoal will cause structural damage to the concrete roof. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an asphalt heating, melting, and filtering device to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an asphalt heating, melting, and filtering device, comprising a melting furnace, wherein the melting furnace has a melting chamber and a storage chamber inside, the inner wall and bottom of the melting chamber are provided with multiple sets of filter holes, a discharge pipe is connected to one side of the storage chamber, a carbon tube is installed inside the melting furnace, a bottom chamber is provided at the bottom of the melting furnace and is connected to the carbon tube, a vent pipe is provided inside the carbon tube, the outer wall of the vent pipe is provided with multiple sets of air holes, two sets of first fixing columns and second fixing columns are fixed to the outer wall of the vent pipe, and a base is fixed to the bottom of the melting furnace.

[0007] By adopting the above technical solution, the technical problem of limited application scenarios of traditional open-boiler heating and melting of asphalt is solved. Before melting asphalt particles, the melting furnace can be moved to a suitable location. Then, the asphalt particles and burning coal are respectively put into the melting chamber and carbon tube in the melting furnace. The burning coal conducts heat to the asphalt particles in the melting chamber through the carbon tube, causing the asphalt particles to gradually melt. When the storage chamber contains molten asphalt liquid, the melting furnace can be moved to the location on the roof that needs repair. Then, the liquid baffle is opened, and the molten asphalt is discharged from the discharge pipe, thereby reducing the physical effort required for personnel to handle molten asphalt. Furthermore, the burning coal will not bake personnel or other items, greatly increasing the safety and practicality of the melting furnace for heating and melting asphalt.

[0008] The present invention is further configured such that four sets of universal wheels are installed at the bottom of the base, and a push handle is fixed on one side of the base.

[0009] Preferably, the furnace can be easily moved by pushing the push handle, and the base is at a certain height from the ground, so that the high temperature conducted from the bottom of the furnace will not affect the ground.

[0010] The present invention is further configured such that a connecting column is fixed at one end of the discharge pipe, a liquid blocking plate is sleeved on the outer wall of the connecting column, a push rod is fixed at one end of the liquid blocking plate, and a fixing plate is installed at the end of the discharge pipe.

[0011] Preferably, personnel can rotate and push the push rod to release the seal blockage of the discharge pipe by rotating the liquid blocking plate.

[0012] The present invention is further configured such that the outer wall of the push rod is fitted with a fluororubber sleeve, and the fixing plate is configured in an L-shape.

[0013] Preferably, the L-shaped fixing plate can block the liquid blocking plate, thereby allowing the liquid blocking plate to block the molten asphalt in the discharge pipe.

[0014] The present invention is further configured such that the top wall of the carbon tube is higher than the top wall of the melting furnace, and the top of the melting chamber is provided with a sealing cover, the outer diameter of which is larger than the inner wall diameter of the melting chamber.

[0015] Preferably, during the heating and melting process of asphalt particles, the sealing cap can seal the top of the melting chamber, thereby reducing heat loss inside the melting chamber.

[0016] The present invention is further configured such that a baffle is installed on the top of the carbon tube, and a through hole is provided on the top of the baffle.

[0017] Preferably, the baffle can block the flame generated by the burning coal inside the carbon tube, preventing the flame from shooting outward.

[0018] The present invention is further configured such that a protective shell is fixed to the outer wall of the melting furnace, and the interior of the protective shell is hollow, and the inner layer of the protective shell is made of rock wool board.

[0019] Preferably, the inner layer of rock wool board material inside the protective shell blocks heat from the outer wall of the melting furnace, and the hollow space inside the protective shell reduces heat conduction, so that the melting furnace will not cause serious burns to personnel.

[0020] The present invention is further configured such that multiple sets of vent holes are provided on both sides of the inner wall of the bottom compartment, and a flow guide shell is installed at the end of the vent holes.

[0021] Preferably, the interior of the bottom chamber can be connected to the outside air through multiple sets of vents on the outer wall of the melting furnace, and the guide shell can guide the sparks and high-temperature gases flowing out of the vents downward to prevent the sparks and high-temperature gases from causing burns to personnel.

[0022] The present invention is further configured such that a slag discharge port is provided on one side of the bottom silo, and a charcoal box is provided inside the slag discharge port.

[0023] Preferably, the coal box covers the slag discharge port to prevent coal in the bottom bin from being discharged from the slag discharge port.

[0024] The present invention is further configured such that the vent pipe is T-shaped, and the bottom ends of the vent pipe are both curved downwards.

[0025] Preferably, the coal dust from combustion enters the vent pipe through the vent holes. When the dust enters the vent pipe, it slides along the downward-sloping arc-shaped pipe wall at the bottom of the vent pipe to both sides of the bottom, and is eventually discharged from the ports at both ends of the bottom of the vent pipe.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model solves the technical problem of limited application scenarios in traditional open-boiler heating and melting of asphalt by setting up a melting furnace, carbon tube, melting chamber, filter hole, storage chamber, and vent pipe. Before melting asphalt particles, the melting furnace can be moved to a suitable location, and then the asphalt particles and heated coal are respectively put into the melting chamber and carbon tube in the melting furnace. The burning coal conducts heat to the asphalt particles in the melting chamber through the carbon tube, causing the asphalt particles to gradually melt. When the storage chamber contains molten asphalt liquid, the melting furnace can be moved to the location on the roof that needs repair, and then the liquid baffle is opened to discharge the molten asphalt from the discharge pipe. This reduces the physical effort required for personnel to handle molten asphalt, and the burning coal will not bake personnel or other items, greatly increasing the safety and practicality of the melting furnace for heating and melting asphalt.

[0028] 2. This utility model, by setting up a ventilation pipe, air holes, vent holes and a flow guide shell, allows outside air to enter the ventilation pipe through the through holes set at the top of the baffle. Then, the air inside the ventilation pipe permeates into the inside of the carbon tube through the air holes, thereby providing oxygen to the coal inside the carbon tube. Furthermore, the bottom chamber can be interconnected with the outside air through multiple sets of vent holes on the outer wall of the melting furnace. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0030] Figure 2 This is a schematic diagram of the melting chamber of this utility model;

[0031] Figure 3 This is a schematic diagram of the melting furnace of this utility model;

[0032] Figure 4 This is a structural diagram of the internal structure of the melting furnace of this utility model;

[0033] Figure 5 This is a schematic diagram of the installation of the flow guide shell of this utility model;

[0034] Figure 6 This is a structural diagram of the vent pipe of this utility model;

[0035] Figure 7 This is a schematic diagram of the installation of the blower of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Melting furnace; 101. Melting chamber; 102. Filter hole; 103. Storage chamber; 104. Discharge pipe; 105. Bottom chamber; 106. Slag discharge port; 107. Vent hole; 108. Flow guide shell; 109. Base; 110. Casters; 111. Push handle; 112. Liquid blocking plate; 113. Push rod; 114. Fixing plate; 115. Connecting column; 2. Carbon tube; 201. Baffle; 202. Through hole; 3. Protective shell; 4. Vent pipe; 401. Air hole; 402. First fixing column; 403. Second fixing column; 5. Carbon box; 6. Sealing cover; 7. Blower. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The embodiments of this utility model will be described below based on its overall structure.

[0040] First embodiment:

[0041] Please see Figure 1 — Figure 6 The system includes a melting furnace 1, which has a melting chamber 101 and a storage chamber 103 inside. Multiple sets of filter holes 102 are formed on the inner wall and bottom of the melting chamber 101. A discharge pipe 104 is connected to one side of the storage chamber 103. A carbon tube 2 is installed inside the melting furnace 1. A bottom chamber 105 is formed at the bottom of the melting furnace 1 and is connected to the carbon tube 2. A vent pipe 4 is installed inside the carbon tube 2. Multiple sets of air holes 401 are formed on the outer wall of the vent pipe 4. Two sets of first fixing columns 402 and second fixing columns 403 are fixed to the outer wall of the vent pipe 4. A base 109 is fixed to the bottom of the melting furnace 1. This system solves the technical problem of limited application scenarios in traditional open-bowl heating methods for melting asphalt, and improves the performance of asphalt particles. Before the melting operation, the melting furnace 1 can be moved to a suitable location. Then, asphalt particles and heated coal are respectively put into the melting chamber 101 and the carbon tube 2 in the melting furnace 1. The burning coal conducts heat to the asphalt particles in the melting chamber 101 through the carbon tube 2, causing the asphalt particles to gradually melt. When the storage chamber 103 contains molten asphalt liquid, the melting furnace 1 can be moved to the location on the roof that needs to be repaired. Then, the liquid blocking plate 112 is opened to discharge the molten asphalt from the discharge pipe 104, thereby reducing the physical effort required for personnel to handle the molten asphalt. Furthermore, the burning coal will not bake personnel or other items, greatly increasing the safety and practicality of the melting furnace 1 in heating and melting asphalt.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figure 1The base 109 is equipped with four sets of casters 110 at its bottom. A push handle 111 is fixed on one side of the base 109. Personnel can push the push handle 111 to move the melting furnace 1 easily. The base 109 is at a certain height from the ground, so that the high temperature conducted from the bottom of the melting furnace 1 will not affect the ground.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 One end of the discharge pipe 104 is fixed with a connecting column 115. The outer wall of the connecting column 115 is fitted with a liquid blocking plate 112. One end of the liquid blocking plate 112 is fixed with a push rod 113. The end of the discharge pipe 104 is fitted with a fixing plate 114. Personnel can rotate and push the push rod 113 to release the liquid blocking plate 112 from sealing and blocking the discharge pipe 104.

[0044] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 The outer wall of the push rod 113 is fitted with a fluororubber sleeve, and the fixing plate 114 is set in an L-shape. The L-shaped fixing plate 114 can block the liquid blocking plate 112, thereby allowing the liquid blocking plate 112 to block the molten asphalt in the discharge pipe 104.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 4 The top wall of the carbon tube 2 is higher than the top wall of the melting furnace 1. The top of the melting chamber 101 is provided with a sealing cover 6, and the outer diameter of the sealing cover 6 is larger than the inner diameter of the melting chamber 101. During the heating and melting of asphalt particles, the sealing cover 6 can seal the top of the melting chamber 101, thereby reducing the heat loss inside the melting chamber 101.

[0046] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 A baffle 201 is installed on the top of the carbon tube 2. A through hole 202 is opened on the top of the baffle 201. The baffle 201 can block the flame generated by the burning coal inside the carbon tube 2 and prevent the flame from shooting outward.

[0047] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 The outer wall of the melting furnace 1 is fixed with a protective shell 3, and the interior of the protective shell 3 is hollow. The inner layer of the protective shell 3 is made of rock wool board. The inner layer of the protective shell 3 blocks the heat on the outer wall of the melting furnace 1, and the hollow space inside the protective shell 3 can reduce the conduction of heat, so that the melting furnace 1 will not cause serious burns to personnel.

[0048] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 , Figure 4 and Figure 5The inner wall of the bottom chamber 105 has multiple sets of ventilation holes 107 on both sides, and the end of the ventilation hole 107 is equipped with a flow guide shell 108. The interior of the bottom chamber 105 can be connected to the outside air through the multiple sets of ventilation holes 107 on the outer wall of the melting furnace 1. The flow guide shell 108 can guide the sparks and high-temperature gas flowing out of the ventilation hole 107 downward to prevent the sparks and high-temperature gas from causing burns to personnel.

[0049] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 and Figure 5 A slag discharge port 106 is provided on one side of the bottom silo 105. A charcoal box 5 is installed inside the slag discharge port 106 to block the port of the slag discharge port 106 and prevent the coal in the bottom silo 105 from being discharged from the slag discharge port 106.

[0050] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The ventilation pipe 4 is T-shaped, and the bottom two sides of the ventilation pipe 4 are downward sloping arcs. The coal dust from the combustion will enter the ventilation pipe 4 through the air holes 401 on the ventilation pipe 4. When the dust enters the interior of the ventilation pipe 4, the dust will slide along the downward sloping arc wall at the bottom of the ventilation pipe 4 to the two sides at the bottom of the ventilation pipe 4, and finally be discharged from the ports at both ends of the bottom of the ventilation pipe 4.

[0051] Second embodiment:

[0052] Please see Figure 7 If the working environment is humid and there are no flammable materials, a set of blowers 7 can be added to the top of the carbon tube 2. The blowers 7 draw outside air into its interior and discharge the drawn air through the exhaust port of the blowers 7. The air discharged from the blowers 7 is transmitted to the ventilation pipe 4 through the through hole 202 at the top of the baffle 201, so that a large amount of air flows into the carbon tube 2 through the air hole 401 on the ventilation pipe 4, providing sufficient oxygen for the coal burning inside the carbon tube 2.

[0053] In practical operation, the operator can push the handle 111 to move the melting furnace 1 to a suitable work site. Then, the sealing cover 6 on top of the melting furnace 1 is removed from the top of the melting chamber 101, and asphalt particles are placed upside down into the melting chamber 101. After a certain amount of asphalt particles are stored inside the melting chamber 101, the sealing cover 6 is placed back on top of the melting chamber 101. Then, the baffle 201 on top of the carbon tube 2 is flipped open, and heated coal or charcoal is added into the carbon tube 2. The amount of coal added into the carbon tube 2 must not exceed the air hole 401 at the highest point of the vent pipe 4. After the coal addition operation is completed, the baffle 201 is placed back on top of the carbon tube 2. The coal heated inside the carbon tube 2 conducts heat to the asphalt inside the melting chamber 101 through the metal carbon tube 2. The particles, heated by coal through heat conduction, gradually melt into a liquid state. The molten asphalt flows into the storage chamber 103 through the filter holes 102 set in the inner wall and bottom of the melting chamber 101. When personnel need to remove the molten asphalt, they rotate the liquid-blocking plate 112 by pushing the push rod 113, causing the liquid-blocking plate 112 to rotate around the connecting column 115, thereby discharging the molten asphalt inside the storage chamber 11 through the discharge pipe 104. During the heating of the molten asphalt particles, personnel can open the sealing cover 6 on the top of the melting furnace 1 at regular intervals, and then use the stirring plate to stir the solid-liquid mixture of asphalt inside the melting chamber 101, thereby accelerating the entry of the molten asphalt into the storage chamber 103 through the filter holes 102.

[0054] Outside air enters the ventilation pipe 4 through the through hole 202 at the top of the baffle 201. Then, the air inside the ventilation pipe 4 permeates into the coal tube 2 through the vent 401, providing oxygen to the coal inside the coal tube 2. Furthermore, the bottom hopper 105 is interconnected with the outside air through multiple sets of ventilation holes 107 on the outer wall of the melting furnace 1. When coal is poured into the coal tube 2, a small amount of coal accumulates in the bottom hopper 105 below the bottom of the coal tube 2, forming a cone shape. The coal in the bottom hopper 105... The molten asphalt stored in the storage bin 103 is heated by the inner wall of the top of the bottom bin 105 to prevent the molten asphalt accumulated inside the storage bin 103 from cooling and solidifying before it is removed. When it is necessary to refill the coal tube 2 with coal, the personnel can remove the coal box 5 from the slag discharge port 106 and use tools such as fire tongs to remove the almost burned coal piled up below the coal tube 2. This allows the personnel to put new burning coal into the coal tube 2 to continue heating and melting the asphalt inside the melting bin 101.

[0055] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An asphalt heating, melting, and filtering device, comprising a melting furnace (1), characterized in that: The melting furnace (1) has a melting chamber (101) and a storage chamber (103) inside. The inner wall and bottom of the melting chamber (101) are provided with multiple sets of filter holes (102). A discharge pipe (104) is connected to one side of the storage chamber (103). A carbon pipe (2) is installed inside the melting furnace (1). A bottom chamber (105) is provided at the bottom of the melting furnace (1) and is connected to the carbon pipe (2). A vent pipe (4) is provided inside the carbon pipe (2). Multiple sets of air holes (401) are provided on the outer wall of the vent pipe (4). Two sets of first fixing columns (402) and second fixing columns (403) are fixed on the outer wall of the vent pipe (4). A base (109) is fixed at the bottom of the melting furnace (1).

2. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: The base (109) is equipped with four sets of casters (110) at its bottom, and a push handle (111) is fixed on one side of the base (109).

3. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: One end of the discharge pipe (104) is fixed with a connecting column (115), the outer wall of the connecting column (115) is fitted with a liquid blocking plate (112), one end of the liquid blocking plate (112) is fixed with a push rod (113), and the end of the discharge pipe (104) is fitted with a fixing plate (114).

4. The asphalt heating, melting, and filtering device according to claim 3, characterized in that: The outer wall of the push rod (113) is fitted with a fluororubber sleeve, and the fixing plate (114) is set in an L-shape.

5. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: The top wall of the carbon tube (2) is higher than the top wall of the melting furnace (1), and the top of the melting chamber (101) is provided with a sealing cover (6), and the outer diameter of the sealing cover (6) is larger than the inner wall diameter of the melting chamber (101).

6. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: A baffle (201) is installed on the top of the carbon tube (2), and a through hole (202) is opened on the top of the baffle (201).

7. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: The outer wall of the melting furnace (1) is fixed with a protective shell (3), and the interior of the protective shell (3) is hollow. The inner layer of the protective shell (3) is made of rock wool board.

8. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: The bottom compartment (105) has multiple sets of ventilation holes (107) on both sides of its inner wall, and the ends of the ventilation holes (107) are equipped with flow guide shells (108).

9. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: A slag discharge port (106) is provided on one side of the bottom silo (105), and a charcoal box (5) is provided inside the slag discharge port (106).

10. The asphalt heating, melting, and filtering device according to claim 1, characterized in that: The ventilation tube (4) is T-shaped, and the bottom ends of the ventilation tube (4) are both curved downwards.