An integrated three-stage hot melt kettle

Abstract

The present invention discloses an integral three-section hot melt kettle, comprising a kettle body assembly, a heating system, and a hot melt material conveying system connected by pipelines; the kettle body assembly comprises an outer kettle body; a kettle cover is provided on the top of the outer kettle body, and a loading port and a feeding port are provided on the kettle cover; the outer kettle body comprises an outer kettle outer barrel and an outer kettle inner barrel which are fitted into each other, an oil inlet and an oil outlet are provided on the outer kettle body, and a material outlet is provided at the bottom of the outer kettle body; a middle kettle body is provided in the outer kettle body, and the middle kettle body divides the entire outer kettle body into three sections: upper, middle, and lower; the middle kettle body comprises a middle kettle outer barrel and a middle kettle inner barrel, and an oil inlet and an oil outlet are provided on the middle kettle body; a stirring mechanism is coaxially provided in the outer kettle body, and the oil inlet and the oil outlet are connected to the heating system. The present invention can greatly improve the melting efficiency for different types of hot melt coatings, and at the same time has the advantages of automatic control of the melt temperature, sufficient fuel combustion, high combustion efficiency, and compact structure.

Description

Technical Field

[0001] The invention belongs to the technical field of road marking equipment, and in particular relates to a hot melt kettle. Background Art

[0002] In recent years, my country's economy has developed rapidly, and the construction of highways and roads at all levels has continued to develop. The market demand for road marking equipment has continued to increase. As a marking melting equipment, hot melt kettle is one of the important equipment, and the market demand is increasing.

[0003] Most of the existing hot melt kettles on the market are divided into two types: direct heating and indirect heating. Both types place the material in the barrel and heat the outer wall of the barrel, which has slow heating efficiency. Due to the progress requirements of the marking project, the marking machine must complete the corresponding marking work in a short time, which requires multiple auxiliary raw material transport vehicles. Due to the slow melting efficiency of traditional hot melt kettles, several hot melt kettles are often required to work at the same time to meet the requirements of the project progress. This results in a lot of accompanying equipment, a lot of personnel, high costs, and slow construction speed. Summary of the Invention

[0004] In order to solve the shortcomings of the existing hot melt kettle technology, the present invention provides an integral three-section hot melt kettle, which greatly improves the melting efficiency and reduces the operating equipment and labor input.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: an integrated three-section hot melt kettle, comprising a kettle assembly connected by pipes, a heating system for heating hot melt coating, and a hot melt material conveying system for conveying melted high-temperature material into the kettle assembly;

[0006] The kettle body assembly includes an outer kettle body; a kettle cover is provided on the top of the outer kettle body, and a loading port and a feeding port are provided on the kettle cover. The outer kettle body includes an outer kettle outer barrel and an outer kettle inner barrel which are fitted together. An oil inlet and an oil outlet are provided on the outer kettle body, which are connected to the cavity between the outer kettle outer barrel and the outer kettle inner barrel. A discharge port connected to the outer kettle inner barrel is provided at the bottom of the outer kettle body, and the feeding port and the discharge port are connected to a hot melt conveying system; a middle kettle body is provided in the outer kettle body, and the middle kettle body divides the entire outer kettle body into three sections: upper, middle and lower. The middle kettle body includes a middle kettle outer barrel and a middle kettle inner barrel which are fitted together. An oil inlet and an oil outlet are provided on the middle kettle body, which are connected to the cavity between the outer kettle outer barrel and the inner barrel; a stirring mechanism for stirring the material in the outer kettle inner barrel is coaxially provided in the outer kettle body, and the oil inlet and the oil outlet are connected to a heating system.

[0007] In order to further optimize the present invention, the following technical solutions may be preferably used:

[0008] Preferably, the stirring mechanism includes a stirring shaft, a rotating mechanism, an upper agitator, and a lower agitator, and the stirring shaft is rotatably arranged in the middle position of the outer kettle body; the rotating mechanism is arranged on the top of the kettle cover and connected to the top of the stirring shaft, and the upper agitator and lower agitator are respectively arranged on the stirring shaft corresponding to the upper and lower positions of the outer kettle body.

[0009] Preferably, the upper agitator includes a stirring frame evenly distributed around the axis, and the stirring frame is provided with a fan-shaped stirring blade group and a cross-shaped stirring knife group at intervals. The lower agitator includes connected fan-shaped blades and shear plates, and the plate surfaces of the fan-shaped blades and shear plates are perpendicular to each other.

[0010] Preferably, the middle kettle body also includes a perforated plate, and the outer barrel of the middle kettle body and the inner barrel of the middle kettle body are both arranged on the perforated plate. Heating tubes and guide plates are arranged in the inner barrel of the middle kettle body corresponding to the outer periphery of the barrel of the middle kettle body. The guide plates are arranged between the heating tubes for guiding the heating medium, and a partition for guiding the heating medium is provided on the inner wall of the outer barrel of the middle kettle body.

[0011] Preferably, the heating system includes a high-efficiency heating furnace for heating the heating medium, the high-efficiency heating furnace is provided with a burner, the burner is connected to the fuel tank, fuel filter, and fuel pump in sequence through the fuel delivery pipeline, the high-efficiency heating furnace is also provided with a heating medium delivery pipeline, the heating medium delivery pipeline is connected to the oil inlet 2 and oil outlet 2 of the kettle body and the hot melt delivery system through a one-way valve, a high-temperature gear pump, a heating medium filter, and a centrifugal pump in sequence, and a temperature sensor, a thermometer, and a pressure gauge are also provided on the heating medium delivery pipeline.

[0012] Preferably, the outer kettle body is also connected to an overflow tank and an oil storage tank in sequence, the oil inlet section of the overflow tank is connected to the oil outlet of the outer kettle body, the oil outlet end of the overflow tank is connected to the oil inlet end of the oil storage tank, and the oil outlet end of the oil storage tank is connected to the oil inlet of the outer kettle body.

[0013] Preferably, the hot melt conveying system includes a conveying pipe, one end of which is connected to the feed port and the other end is connected to the discharge port. A conveying pump is provided on the conveying pipe, and an automatic valve is provided at the inlet end of the conveying pump.

[0014] Preferably, the feed pipe and the feed pump are both provided with a heating cavity connected to the heating system, a heat preservation layer is provided outside the corresponding heating cavity on the feed pipe, and a heat preservation layer is provided on the outer kettle body.

[0015] The beneficial effects of the present invention are:

[0016] 1. This invention can be used with different types of hot-melt coatings. Utilizing a proprietary structure, it rapidly melts the raw material. A hot-melt conveying system circulates a portion of the melted material back to the raw material section for mixing and stirring, shortening the heating and melting time and significantly improving melting efficiency. It also features automatic melt temperature control, ensuring full fuel combustion and high combustion efficiency, while also facilitating easy assembly and maintenance. The hot-melt kettle efficiently and continuously supplies hot-melt coating to the hot-melt marking equipment, achieving high-speed marking results through the control of an electronic control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural diagram of the kettle assembly;

[0019] Figure 3 Schematic diagram of the internal structure of the kettle assembly;

[0020] Figure 4 1. It is a structural diagram of the stirring mechanism assembly;

[0021] Figure 5 It is a structural diagram of the heating system;

[0022] Figure 6 It is a structural diagram of the hot melt conveying system;

[0023] Figure 7 Schematic diagram of the internal structure of the middle kettle.

[0024] Among them, 1-kettle body assembly, 2-stirring mechanism, 3-heating system, 4-hot melt conveying system, 5-kettle cover assembly, 6-outer kettle body, 7-middle kettle body, 8-rotating mechanism, 9-bearing seat, 10-upper stirrer, 11-lower stirrer, 12-fuel tank, 13-fuel filter, 14-fuel pump, 15-high-efficiency heating furnace, 16-check valve, 17-high-temperature gear pump, 18-heating medium filter, 19-centrifugal pump, 20-temperature sensor, 21-temperature gauge, 22-pressure gauge, 23- Overflow tank, 24-oil storage tank, 25-automatic valve, 26-feeding pump, 27-manual valve, 28-feeding pipe, 29-loading port, 30-feeding port, 31-kettle cover bottom plate, 32-discharge port, 33-oil outlet 1, 34-insulation layer, 35-orifice plate, 36-oil outlet 2, 37-heating pipe, 38-middle kettle body outer barrel, 39-middle kettle body inner barrel, 40-oil inlet 2, 41-outer kettle body outer barrel, 42-outer kettle body inner barrel, 43-connecting flange, 44-base, 45-partition, 46-guide plate. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] like Figure 1-7 As shown, an integrated three-stage hot melt kettle includes a kettle assembly 1 connected by pipes, a heating system 3 for heating hot melt coating, and a hot melt material conveying system 4 for conveying melted high-temperature material into the kettle assembly;

[0028] The kettle body assembly includes a base 44, on which an outer kettle body 6 is mounted, and a kettle cover assembly 5 is mounted on the top of the outer kettle body through a connecting flange 43. The kettle cover assembly includes a kettle cover bottom plate 31, and a loading port 29 and a feeding port are provided on the kettle cover. The loading port is used to put raw materials, and the feeding port 30 is used to put hot melt materials. The outer kettle body includes an outer kettle outer barrel and an outer kettle inner barrel that are mutually set. An oil inlet and an oil outlet are connected to the cavity between the outer kettle outer barrel 41 and the outer kettle inner barrel 42. A discharge port connected to the outer kettle inner barrel is provided at the bottom of the outer kettle body, and the feed port and the discharge port 32 are connected to the hot melt conveying system; a middle kettle body is installed in the outer kettle body 6, and the middle kettle body divides the entire outer kettle body into three sections: upper, middle and lower. The middle kettle body 7 includes a middle kettle that is mutually set. The outer barrel 38 and the inner barrel 39 of the middle kettle body are installed on the middle kettle body. The middle kettle body is equipped with an oil inlet 2 and an oil outlet 2 36 that are connected to the cavity between the outer barrel and the inner barrel of the middle kettle body. The outer kettle body is coaxially installed with a stirring mechanism for stirring the material in the outer barrel of the outer kettle body. The oil inlet 1, oil outlet 1, oil inlet 2 40, and oil outlet 2 are connected to the heating system. The middle kettle body also includes a perforated plate. The outer barrel and the inner barrel of the middle kettle body are both installed on the perforated plate 35. The outer barrel of the middle kettle body is equipped with a heating pipe 37, a guide plate 46, and a partition 45 at the outer position of the inner barrel of the middle kettle body. The heating pipe is welded between the upper and lower plates to heat the hot melt. The heating medium is used to transport the heating medium between the heating pipes. The guide plate is used to guide the heating medium between the heating pipes. The partition also serves to guide the heating medium. Under the guidance of the guide plate, the heating medium efficiently heats the material pipe, so that the hot melt can obtain more heat during the process of entering and exiting the material pipe, thereby making the hot melt reach a hot melt state that can be used. Furthermore, the outer kettle body is also connected to an overflow tank and an oil storage tank 24 in sequence. The oil inlet section of the overflow tank is connected to the oil outlet 33 of the outer kettle body, the oil outlet end of the overflow tank 23 is connected to the oil inlet end of the oil storage tank, and the oil outlet end of the oil storage tank is connected to the oil inlet of the outer kettle body.

[0029] The heating system includes a high-efficiency heating furnace for heating the heating medium. A burner is installed on the high-efficiency heating furnace. The burner is connected to the fuel tank 12, the fuel filter 13, and the fuel pump 14 in sequence through the fuel delivery pipeline. A heating medium delivery pipeline is also installed on the high-efficiency heating furnace 15. The heating medium delivery pipeline is connected to the oil inlet 2 and the oil outlet 2 of the kettle body and the hot melt delivery system through a one-way valve 16, a high-temperature gear pump 17, a heating medium filter 18, and a centrifugal pump 19 in sequence. A temperature sensor 20, a thermometer 21, and a pressure gauge 22 are also installed on the heating medium delivery pipeline.

[0030] The stirring mechanism 2 includes a stirring shaft, a rotating rotary mechanism 8, an upper stirrer 10, and a lower stirrer. The stirring shaft is rotatably installed in the middle position of the outer kettle body; the rotating rotary mechanism 8 is installed on the top of the kettle cover through a bearing seat 9 and is connected to the top of the stirring shaft. The upper stirrer 10 and the lower stirrer 11 are respectively installed on the stirring shaft corresponding to the upper and lower positions of the outer kettle body. The upper stirrer includes a stirring frame evenly installed around the axis, and a fan-shaped stirring blade group and a cross-shaped stirring knife group are installed on the stirring frame at intervals; the lower stirrer includes connected fan-shaped blades and shear plates. The surfaces of the fan-shaped blades and the shear plates are perpendicular to each other. The stirring blades with a specially designed structure can ensure that the materials in the kettle body are stirred quickly; the fan-shaped blades are more conducive to uniformly mixing the hot material and the raw material, and the cross-shaped stirring knife group is more conducive to piercing the EVA bag of the hot melt while stirring, shortening the melting time of the coating and improving the melting efficiency; the fan-shaped blades can fully stir the hot melt in the core of the lower section of the kettle, and the shear plates can fully stir the hot melt at the edge of the lower section of the kettle.

[0031] The hot melt conveying system includes a conveying pipe, one end of which is connected to the feed port and the other end is connected to the discharge port. A conveying pump is installed on the conveying pipe, and an automatic valve 25 is installed at the inlet end of the conveying pump. The hot melt is conveyed by the conveying pump. Furthermore, a heating chamber connected to the heating system is installed on the conveying pipe and the conveying pump 26. An insulation layer 34 is installed outside the corresponding heating chamber on the conveying pipe, and an insulation layer is installed on the outer kettle body. By designing the insulation layer and the heating chamber, the hot melt can be kept at a constant temperature in the conveying pipeline, thereby reducing heat loss.

[0032] The working principle of the present invention is as follows: a heating medium is heated by a heating mechanism, and the barrel of a hot melt kettle is heated by the heating medium. Raw materials are added to the feeding port of the upper kettle according to the set feeding amount. The raw materials enter the upper section of the hot melt kettle and are heated by the middle section of the kettle. After entering the lower section of the kettle, the raw materials become clinker that can be used for operation. The clinker in the lower section of the kettle passes through a feeding system, is used for marking operation all the way, and is circulated to the upper end to heat the raw materials in the upper section of the kettle. In this cycle, clinker that can be used for construction operation can be continuously generated, thereby ensuring that the marking operation can be carried out continuously.

[0033] This invention can be used with different types of hot-melt coatings, utilizing a proprietary structure to rapidly melt the raw material. A hot-melt conveying system circulates a portion of the melted material back to the raw material section for mixing and stirring, shortening the heating and melting time and significantly improving melting efficiency. It also features automatic melt temperature control, ensuring full fuel combustion and high combustion efficiency, while also facilitating easy assembly and maintenance. The hot-melt kettle efficiently and continuously supplies hot-melt coating to the hot-melt marking equipment, achieving high-speed marking through the control of an electronic control system.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated three-stage hot melt kettle, comprising a kettle assembly connected by pipes, a heating system for heating hot melt coating, and a hot melt material conveying system for conveying molten high-temperature material into the kettle assembly; characterized in that: The kettle assembly includes an outer kettle body; a kettle cover is provided on the top of the outer kettle body, and a loading port and a feeding port are provided on the kettle cover; the outer kettle body includes an outer kettle outer barrel and an outer kettle inner barrel which are mutually fitted; an oil inlet and an oil outlet are provided on the outer kettle body, which are connected to the cavity between the outer kettle outer barrel and the outer kettle inner barrel; a discharge port which is connected to the outer kettle inner barrel is provided at the bottom of the outer kettle body, and the feed port and the discharge port are connected to the hot melt conveying system; a middle kettle body is provided in the outer kettle body, and the middle kettle body divides the entire outer kettle body into three sections: upper, middle and lower; the middle kettle body includes an outer kettle outer barrel and an inner kettle inner barrel which are mutually fitted; The middle kettle body has a barrel, and the middle kettle body is provided with a second oil inlet and a second oil outlet that are connected to the cavity between the outer barrel of the middle kettle body and the inner barrel of the middle kettle body; the outer kettle body is coaxially provided with a stirring mechanism for stirring the material in the barrel of the outer kettle body, and the first oil inlet, the first oil outlet, the second oil inlet, and the second oil outlet are connected to the heating system; the raw material enters the upper section of the hot melt kettle and is heated by the middle section of the kettle. After entering the lower section of the kettle, the raw material becomes clinker that can be used for operation. The clinker in the lower section of the kettle passes through the material conveying system, is used for marking operation all the way, and is circulated to the upper section to heat the raw material in the upper section of the kettle. In this cycle, clinker that can be used for construction operation can be continuously generated; The middle kettle body also includes a perforated plate, and the outer barrel of the middle kettle body and the inner barrel of the middle kettle body are both arranged on the perforated plate. A heating pipe and a guide plate are arranged in the inner barrel of the middle kettle body corresponding to the outer periphery of the barrel of the middle kettle body. The guide plate is arranged between the heating pipes for guiding the heating medium. A partition for guiding the heating medium is provided on the inner wall of the outer barrel of the middle kettle body; The stirring mechanism includes a stirring shaft, a rotary mechanism, an upper stirrer, and a lower stirrer. The stirring shaft is rotatably arranged in the middle position of the outer kettle body; the rotary mechanism is arranged on the top of the kettle cover and connected to the top of the stirring shaft. The upper stirrer and the lower stirrer are respectively arranged on the stirring shaft corresponding to the upper and lower sections of the outer kettle body; The upper stirrer has a cross-shaped stirring blade set for piercing the EVA packaging bag; The lower agitator has fan-shaped blades and shear plates that are arranged perpendicular to each other.

2. The integrated three-stage hot melt kettle according to claim 1, characterized in that: The heating system includes a high-efficiency heating furnace for heating a heating medium, a burner is provided on the high-efficiency heating furnace, and the burner is connected to a fuel tank, a fuel filter, and a fuel pump in sequence through a fuel delivery pipeline. The high-efficiency heating furnace is also provided with a heating medium delivery pipeline, and the heating medium delivery pipeline is connected to the second oil inlet and the second oil outlet of the kettle body and the hot melt delivery system through a one-way valve, a high-temperature gear pump, a heating medium filter, and a centrifugal pump in sequence. A temperature sensor, a temperature gauge, and a pressure gauge are also provided on the heating medium delivery pipeline.

3. The integrated three-stage hot melt kettle according to claim 2, characterized in that: The outer kettle body is also connected to an overflow tank and an oil storage tank in sequence. The oil inlet section of the overflow tank is connected to the oil outlet of the outer kettle body, the oil outlet end of the overflow tank is connected to the oil inlet end of the oil storage tank, and the oil outlet end of the oil storage tank is connected to the oil inlet of the outer kettle body.

4. The integrated three-stage hot melt kettle according to claim 1, characterized in that: The hot melt conveying system includes a conveying pipe, one end of which is connected to the feed port and the other end is connected to the discharge port. A conveying pump is provided on the conveying pipe, and an automatic valve is provided at the inlet end of the conveying pump.

5. The integrated three-stage hot melt kettle according to claim 4, characterized in that: The feeding pipe and the feeding pump are both provided with a heating cavity connected to the heating system. The feeding pipe is provided with a heat preservation layer outside the corresponding heating cavity, and the outer kettle body is provided with a heat preservation layer.

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