Hot melt adhesive cooling system

Abstract

The utility model relates to the technical field of hot melt adhesives and discloses a hot melt adhesive cooling system which comprises a first reaction kettle and a second reaction kettle, the first reaction kettle is used for synthetic reaction of hot melt adhesives, the second reaction kettle is a front container for granulation of the hot melt adhesives, and the output end of the first reaction kettle is connected with the input end of the second reaction kettle through a material pipeline. The second reaction kettle is provided with an inner coil pipe, the inner coil pipe is communicated with a cooling pipeline, the cooling pipeline is filled with heat-conducting oil, and a stainless steel pipe is arranged on the cooling pipeline. According to the hot melt adhesive cooling system, heat conduction oil in the inner coil pipe absorbs heat in the second reaction kettle, so that the hot melt adhesive in the second reaction kettle is rapidly cooled, and the heat conduction oil with the increased temperature exchanges heat at the stainless steel pipe in the process of flowing back through the cooling pipeline, so that continuous cooling of the hot melt adhesive in the second reaction kettle is realized; the condition that a pelletizer is damaged due to too high temperature before the hot melt adhesive is pelletized is avoided, and meanwhile, the influence on the oxidation resistance and the adhesive property of the hot melt adhesive is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesives, in particular to a hot melt adhesive cooling system. Background Art

[0002] Hot melt adhesive is a plastic adhesive. Its physical state changes with temperature within a certain temperature range, but its chemical properties remain unchanged. It is non-toxic and tasteless, and is an environmentally friendly chemical product. It is popular because the product itself is solid, easy to package, transport, store, solvent-free, pollution-free, non-toxic, and has the advantages of simple production process, high added value, high bonding strength, and fast speed.

[0003] In the production process of hot melt adhesive, there are two main steps: reaction and granulation. The temperature of the hot melt adhesive after the reaction is relatively high. The high-temperature hot melt adhesive is directly put into the granulator, which not only makes the granulator prone to malfunction, but also the temperature of the hot melt adhesive is too high during the granulation process, which will also lead to the reduction of its antioxidant and bonding properties. Utility Model Content

[0004] The purpose of the utility model is to provide a hot melt adhesive cooling system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot melt adhesive cooling system, comprising a first reactor and a second reactor, the first reactor is used for the synthesis reaction of the hot melt adhesive, the second reactor is a pre-container for hot melt adhesive granulation, the output end of the first reactor is connected to the input end of the second reactor through a material pipeline, the second reactor is provided with an inner coil, the inner coil is connected to a cooling pipeline, the cooling pipeline is filled with heat transfer oil, and a stainless steel pipe is provided on the cooling pipeline.

[0006] Preferably, the stainless steel pipe adopts a coil structure.

[0007] Preferably, a second pump body is also provided on the cooling pipeline, and the second pump body is used to provide conveying power for the heat transfer oil in the cooling pipeline.

[0008] Preferably, the cooling pipeline is arranged outside the second reactor.

[0009] Preferably, a first pump body is arranged on the material pipeline, and the first pump body is used to provide conveying power for the material in the material pipeline.

[0010] Preferably, a cut-off valve is further provided on the material pipeline, and the cut-off valve is located between the first pump body and the first reactor.

[0011] Preferably, the first pump body is a stainless steel high-temperature material pump.

[0012] Preferably, the second pump body adopts a high-temperature thermal oil pump.

[0013] The hot melt adhesive cooling system has the following beneficial effects:

[0014] In the hot melt adhesive cooling system, the heat transfer oil in the inner coil absorbs the heat in the second reactor, so that the hot melt adhesive in the second reactor is quickly cooled down. During the process of the heat transfer oil with increased temperature flowing back through the cooling pipeline, heat exchange is performed at the stainless steel pipe, thereby achieving continuous cooling of the hot melt adhesive in the second reactor, avoiding damage to the granulation machine due to excessive temperature before the hot melt adhesive is granulated, and reducing the impact on the oxidation resistance and bonding properties of the hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A front view of the hot melt adhesive cooling system provided in an embodiment of the present application.

[0016] In the figure: 1. first reaction kettle; 2. first pump body; 3. second reaction kettle; 4. second pump body; 5. stainless steel pipe. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figure 1 As shown, the utility model provides a hot melt adhesive cooling system, including a first reactor 1 and a second reactor 3, the first reactor 1 is used for the synthesis reaction of the hot melt adhesive, the second reactor 3 is a pre-container for hot melt adhesive granulation, and the output end of the first reactor 1 is connected to the input end of the second reactor 3 through a material pipeline.

[0019] Specifically, a first pump body 2 is arranged on the material pipeline. The first pump body 2 adopts a stainless steel high-temperature material pump. The stainless steel high-temperature material pump has the advantages of large conveying capacity, high temperature resistance and corrosion resistance, and can avoid the influence of high temperature of hot melt adhesive materials. The first pump body 2 is used to provide conveying power for the hot melt adhesive material in the material pipeline. A shut-off valve is also arranged on the material pipeline, and the shut-off valve is located between the first pump body 2 and the first reactor 1.

[0020] Furthermore, both the first reactor 1 and the second reactor 3 are provided with inner coils, and the inner coils can increase the heat exchange efficiency between the first reactor 1 and the second reactor 3 .

[0021] Specifically, the inner coil in the first reactor 1 can make the produced hot melt adhesive have a larger heat exchange area. After the hot melt adhesive is produced, it passes through the inner coil in the first reactor 1 and then enters the material pipeline from the output end of the first reactor 1.

[0022] Furthermore, the inner coil in the first reactor 1 is connected to a cooling pipeline, which is arranged outside the second reactor 3. The cooling pipeline is filled with heat transfer oil, and a stainless steel pipe 5 is arranged on the cooling pipeline. The stainless steel pipe 5 is a three-cubic stainless steel pipe, and the stainless steel pipe 5 adopts a coil structure to improve the heat dissipation efficiency of the heat transfer oil.

[0023] A second pump body 4 is also provided on the cooling pipeline. The second pump body 4 adopts a high-temperature heat transfer oil pump. The second pump body 4 is used to provide conveying power for the heat transfer oil in the cooling pipeline.

[0024] In this embodiment, the raw materials react in the first reactor 1 to generate hot melt adhesive, the first pump body 2 and the shut-off valve are opened, the hot melt adhesive passes through the inner coil in the first reactor 1, and then enters the material pipeline from the output end of the first reactor 1, and the hot melt adhesive is transported to the second reactor 3 for cooling, wherein the refrigerant is the heat transfer oil stored in the stainless steel pipe 5, and the heat transfer oil is in a cold oil state in the stainless steel pipe 5. The heat transfer oil in the inner coil of the second reactor 3 absorbs the heat in the second reactor 3, so that the hot melt adhesive in the second reactor 3 is quickly cooled, and the heat transfer oil with increased temperature is transported to the stainless steel pipe 5 through the second pump body 4. After heat exchange at the stainless steel pipe 5, the heat transfer oil flows back to the inner coil of the second reactor 3, and continues to heat exchange and cool the hot melt adhesive in the second reactor 3, thereby achieving continuous cooling of the hot melt adhesive in the second reactor 3, avoiding damage to the granulation machine due to excessive temperature before the hot melt adhesive is granulated, and reducing the impact on the oxidation resistance and bonding properties of the hot melt adhesive.

[0025] Working principle: the raw materials react in the first reactor 1 to generate hot melt adhesive, the first pump body 2 and the shut-off valve are opened, the hot melt adhesive passes through the inner coil in the first reactor 1, and then enters the material pipeline from the output end of the first reactor 1, and the hot melt adhesive is transported to the second reactor 3 for cooling, the heat transfer oil in the inner coil of the second reactor 3 absorbs the heat in the second reactor 3, so that the hot melt adhesive in the second reactor 3 is quickly cooled, and the heat transfer oil with increased temperature is transported to the stainless steel pipe 5 through the second pump body 4, and the heat transfer oil returns to the inner coil of the second reactor 3 after heat exchange at the stainless steel pipe 5, and continues to exchange heat and cool the hot melt adhesive in the second reactor 3, thereby achieving continuous cooling of the hot melt adhesive in the second reactor 3.

[0026] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot melt adhesive cooling system, comprising a first reactor (1) and a second reactor (3), wherein the first reactor (1) is used for the synthesis reaction of the hot melt adhesive, and the second reactor (3) is a pre-container for hot melt adhesive granulation, characterized in that: The output end of the first reaction kettle (1) is connected to the input end of the second reaction kettle (3) via a material pipeline; The second reaction kettle (3) is provided with an inner coil, the inner coil is connected to a cooling pipeline, the cooling pipeline is filled with heat transfer oil, and a stainless steel pipe (5) is provided on the cooling pipeline.

2. A hot melt adhesive cooling system according to claim 1, characterized in that: The stainless steel pipe (5) adopts a coil structure.

3. A hot melt adhesive cooling system according to claim 1, characterized in that: A second pump body (4) is also provided on the cooling pipeline, and the second pump body (4) is used to provide conveying power for the heat transfer oil in the cooling pipeline.

4. A hot melt adhesive cooling system according to claim 1, characterized in that: The cooling pipeline is arranged outside the second reaction kettle (3).

5. A hot melt adhesive cooling system according to claim 1, characterized in that: A first pump body (2) is arranged on the material pipeline, and the first pump body (2) is used to provide conveying power for the material in the material pipeline.

6. A hot melt adhesive cooling system according to claim 5, characterized in that: A cut-off valve is also provided on the material pipeline, and the cut-off valve is located between the first pump body (2) and the first reaction kettle (1).

7. A hot melt adhesive cooling system according to claim 5, characterized in that: The first pump body (2) is a stainless steel high-temperature material pump.

8. A hot melt adhesive cooling system according to claim 3, characterized in that: The second pump body (4) adopts a high-temperature thermal oil pump.

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