Hot melt adhesive melting material and reaction system

Abstract

The utility model relates to the technical field of hot melt adhesive production, and provides a hot melt adhesive melting and reaction system, which comprises a melting kettle, a reaction kettle, a heating device and a cooling device, the melting kettle is connected with the reaction kettle through a transfer pipeline, and the bottom end and the outer wall of the melting kettle are respectively provided with a first heat exchange part and a second heat exchange part; a third heat exchange part and a fourth heat exchange part are respectively arranged at the bottom end and the outer wall of the reaction kettle, and are respectively used for heating or cooling the first heat exchange part, the second heat exchange part, the third heat exchange part and the fourth heat exchange part. According to the utility model, the melt kettle and the reaction kettle can be rapidly heated and cooled, and different positions of the melt kettle and the reaction kettle are respectively heated or cooled, so that the problem that the temperature of each position in the kettle is different is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive production, in particular to a hot melt adhesive melting and reaction system. Background Art

[0002] Hot melt adhesive is a commonly used adhesive. The production of hot melt adhesive involves multiple aspects, including raw materials, production processes, and application characteristics, etc. The raw materials of hot melt adhesive mainly include thermoplastic resins, plasticizers, adhesives, and additives, etc. After these raw materials are mixed and heated in a certain proportion, hot melt adhesive with bonding performance is formed. Different types of raw materials can be used to prepare hot melt adhesives with different characteristics, which are suitable for different application scenarios. The production process of hot melt adhesive mainly includes mixing, heating, forming, and packaging, etc. During the production process, parameters such as temperature, pressure, and time need to be controlled well to ensure the stable quality of hot melt adhesive and high production efficiency. Modern production equipment and automated control systems can improve production efficiency and product quality.

[0003] CN209630998U discloses a heating and melting system for hot melt adhesive used in tape production, which includes a heat transfer oil storage tank, a heat transfer oil heater, a hot melt adhesive heating and melting kettle, and a heat transfer oil recovery tank connected in sequence. The outer wall of the hot melt adhesive heating and melting kettle is attached with at least two sections of independent surrounding heat transfer oil pipes. The outlet of the heat transfer oil heater is connected to the inlets of at least two sections of surrounding heat transfer oil pipes through a first oil supply pipeline and a second oil supply pipeline respectively. A first solenoid valve and a second solenoid valve are respectively arranged on the first oil supply pipeline and the second oil supply pipeline; the first solenoid valve and the second solenoid valve are electrically connected to a control host with a temperature control system. This system can separately heat the kettle body through at least two sections of independent surrounding heat transfer oil pipes. One or more sections of heat transfer oil pipes can be selected to heat according to the amount of heated material, so as to control the heating temperature of the kettle body, and the temperature of the reaction kettle can be controlled more flexibly, precisely, and in real time. However, since the heat transfer oil pipes of this system are arranged around the outer wall of the kettle, this arrangement method has the problem of heating temperature gradient, and the cooling system of this system cools the heat transfer oil gradually by using a heat exchanger, obviously, the cooling efficiency is low, and it takes longer time for reheating.

[0004] Based on this, the technical problem to be solved in this case is: how to further optimize the hot melt adhesive system and solve the problems of temperature gradient and low efficiency. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a hot melt adhesive melting and reaction system, which can quickly heat and cool the melting kettle and the reaction kettle, and by heating or cooling different positions of the melting kettle and the reaction kettle respectively, the problem that the temperatures of different positions in the kettle are different is avoided.

[0006] The technical solution of the present utility model is as follows:

[0007] A hot melt adhesive melting material and reaction system, including a melting kettle, a reaction kettle, a heating device, and a cooling device. The melting kettle and the reaction kettle are connected by a transfer pipeline.

[0008] The bottom end and the outer wall of the melting kettle are respectively provided with a first heat exchange part and a second heat exchange part; the first heat exchange part is provided with a first branch pipeline that is circularly conducted with the heating device through a pipeline; the second heat exchange part is provided with a second branch pipeline that is circularly conducted with the heating device through a pipeline; the first heat exchange part is further provided with a third branch pipeline that is circularly conducted with the cooling device through a pipeline; the second heat exchange part is further provided with a fourth branch pipeline that is circularly conducted with the cooling device through a pipeline;

[0009] The bottom end and the outer wall of the reaction kettle are respectively provided with a third heat exchange part and a fourth heat exchange part; the third heat exchange part is provided with a fifth branch pipeline that is circularly conducted with the heating device through a pipeline; the fourth heat exchange part is provided with a sixth branch pipeline that is circularly conducted with the heating device through a pipeline; the third heat exchange part is further provided with a seventh branch pipeline that is circularly conducted with the cooling device through a pipeline; the fourth heat exchange part is further provided with an eighth branch pipeline that is circularly conducted with the cooling device through a pipeline.

[0010] One of the technical solutions in the above technical solutions of the present utility model has at least the following advantages or beneficial effects:

[0011] The bottom end and the outer wall of the melting kettle and the reaction kettle of the present utility model are respectively provided with heat exchange chambers, and then the bottom end and the outer wall chambers are heated or cooled by the heating device or the cooling device, which greatly avoids the problem of uneven temperature caused by temperature change with heat transfer and the problem of temperature gradient; at the same time, the heating device and the cooling device operate independently, can quickly heat and cool the melting kettle and the reaction kettle, reduce energy consumption, improve production efficiency, and have the characteristics of low consumption and high efficiency. Description of the Drawings

[0012] Figure 1 It is a working schematic diagram of Embodiment 1 of the present utility model. Specific Embodiments

[0013] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0014] Embodiment 1

[0015] Please refer toFigure 1 , a hot melt adhesive melt and reaction system, including a melt kettle 1, a reaction kettle 2, a heating device, and a cooling device. The melt kettle 1 and the reaction kettle 2 are connected by a transfer pipeline 300.

[0016] A first heat exchange part 11 and a second heat exchange part 12 are respectively arranged at the bottom end and the outer wall of the melt kettle 1; the first heat exchange part 11 is provided with a first branch pipeline 110 that is circularly conducted with the heating device through a pipeline; the second heat exchange part 12 is provided with a second branch pipeline 120 that is circularly conducted with the heating device through a pipeline; the first heat exchange part 11 is further provided with a third branch pipeline 130 that is circularly conducted with the cooling device through a pipeline; the second heat exchange part 12 is further provided with a fourth branch pipeline 140 that is circularly conducted with the cooling device through a pipeline.

[0017] A third heat exchange part 21 and a fourth heat exchange part 22 are respectively arranged at the bottom end and the outer wall of the reaction kettle 2; the third heat exchange part 21 is provided with a fifth branch pipeline 150 that is circularly conducted with the heating device through a pipeline; the fourth heat exchange part 22 is provided with a sixth branch pipeline 160 that is circularly conducted with the heating device through a pipeline; the third heat exchange part 21 is further provided with a seventh branch pipeline 170 that is circularly conducted with the cooling device through a pipeline; the fourth heat exchange part 22 is further provided with an eighth branch pipeline 180 that is circularly conducted with the cooling device through a pipeline.

[0018] In this embodiment, a first heat exchange part 11 and a second heat exchange part 12 are arranged at the bottom end and the outer wall of the melt kettle 1, and a third heat exchange part 21 and a fourth heat exchange part 22 are arranged at the bottom end and the outer wall of the reaction kettle 2. Then, the heating device and each branch pipeline are used to heat the heat exchange parts at the bottom end and the outer wall, or the cooling device and each branch pipeline are used to cool the heat exchange parts at the bottom end and the outer wall, so as to achieve the purpose of controlling the temperature in the kettle, and greatly avoid the problem of uneven temperature caused by the change of temperature with heat transfer and the temperature gradient between the upper and lower layers in the kettle. At the same time, the heating device and the cooling device operate independently, can quickly heat and cool the melt kettle 1 and the reaction kettle 2, reduce energy consumption, improve production efficiency, and have the characteristics of low consumption and high efficiency.

[0019] In this embodiment, the first branch pipeline 110, the second branch pipeline 120, the fifth branch pipeline 150, and the sixth branch pipeline 160 are all connected to a heat circulation pipeline 100; the third branch pipeline 130, the fourth branch pipeline 140, the seventh branch pipeline 170, and the eighth branch pipeline 180 are all connected to a cold circulation pipeline 200.

[0020] Under the above design, each branch pipeline for heating is connected to the heat circulation pipeline 100, and the heat circulation pipeline 100, as the main pipeline, can ensure that the temperatures of each branch pipeline for heating are consistent. The cold circulation pipeline 200, as the main pipeline, also ensures that the temperatures of each branch pipeline for cooling are consistent.

[0021] In this embodiment, specifically, the heating device includes a first mold temperature controller 3 and a second mold temperature controller 4 disposed on the heat circulation pipeline 100; the first mold temperature controller 3 and the second mold temperature controller 4 are used to independently or jointly control the temperatures of the melting kettle 1 and the reaction kettle 2.

[0022] In practical applications, the first mold temperature controller 3 and the second mold temperature controller 4 can operate simultaneously or independently, depending on factors such as the production volume and the temperature.

[0023] In this embodiment, the cooling device includes a cold oil tank 5, a heat exchanger 6, and a refrigeration water tank 7; the cold oil tank 5 and the refrigeration water tank 7 are respectively connected to the heat exchanger 6 through pipelines; the cold oil tank 5 is disposed on the cold circulation pipeline 200.

[0024] Since the cooling device in this embodiment has a similar principle to the cooling devices in the technical field, that is, the refrigeration water tank 7 continuously supplies cold water into the heat exchanger 6 to exchange heat with the heat-conducting oil in the cold oil tank 5 that has absorbed a certain amount of heat, the mechanism of its action will not be elaborated in this embodiment. However, it should be noted that there are two groups of refrigeration water tanks 7 in this embodiment, and a gate valve is provided between the two groups of refrigeration water tanks 7 and they are connected to the heat exchanger 6 through a circulating water pump 202 through pipelines. In practical applications, the two groups of refrigeration water tanks 7 can operate simultaneously, and only the opening and closing of the gate valve need to be controlled, which is not only applicable to different application scenarios but also can cool down more quickly.

[0025] It should be noted that a circulating oil pump 201 for increasing the oil transmission pressure is also provided on the cold circulation pipeline 200 in this embodiment.

[0026] Specifically, regulating valves 503 are respectively provided on the pipelines at the inlets of the first branch pipeline 110, the second branch pipeline 120, the third branch pipeline 130, the fourth branch pipeline 140, the fifth branch pipeline 150, the sixth branch pipeline 160, the seventh branch pipeline 170, and the eighth branch pipeline 180; first electromagnetic control valves 501 and check valves 502 are respectively provided on the pipelines at the outlets of the first branch pipeline 110, the second branch pipeline 120, the third branch pipeline 130, the fourth branch pipeline 140, the fifth branch pipeline 150, the sixth branch pipeline 160, the seventh branch pipeline 170, and the eighth branch pipeline 180.

[0027] During practical applications, by changing the position of the valve core of the regulating valve, the flow rate and pressure of the heating or cooling medium are adjusted, so as to further ensure that the temperature at each position in the kettle is more uniform. The flow of the heating or cooling medium is stably and reliably controlled through the first electromagnetic control valve 501 to ensure the safety and stability of the production process. The check valve 502 prevents the reverse flow of the heating or cooling medium and plays a role of safety isolation.

[0028] It should be noted that, for the sake of briefly demonstrating the solution of this embodiment, the first electromagnetic control valve 501, the check valve 502, and the regulating valve 503 are only labeled once.

[0029] As a preference of this embodiment, a high-level oil tank 31 and a low-level oil tank 32 are further provided on the heat circulation pipeline 100.

[0030] More specifically, the capacity of the high-level oil tank 31 is 400 liters, and the capacity of the low-level oil tank 32 is 600 liters.

[0031] In practical applications, the high-level oil tank 31 can play a role in preventing the heat-conducting oil from overheating, etc., and the low-level oil tank 32 can play a role in compensating for the oil volume change caused by the temperature change of the heat-conducting oil and stabilizing the oil pressure of the system.

[0032] In order to ensure the smooth transfer of materials, a transfer pump 301 is provided on the transfer pipeline 300.

[0033] In this embodiment, a third electromagnetic control valve 302 is further provided on the transfer pipeline 300.

[0034] In this embodiment, the reaction kettle 2 is further provided with a discharge pipeline 400 communicated with an external collection device, and a second electromagnetic control valve 401, a discharge pump 402, and a filter 403 are sequentially provided on the discharge pipeline 400.

[0035] Under the above design, it can not only keep the discharge smooth but also filter the residual impurities in the glue.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hot melt adhesive melt and reaction system, comprising a melt kettle, a reaction kettle, a heating device, and a cooling device, wherein the melt kettle and the reaction kettle are connected by a material transfer pipe, characterized in that: The bottom end and outer wall of the melting kettle are respectively provided with a first heat exchange part and a second heat exchange part; the first heat exchange part is provided with a first branch pipe that is circulated and conducted with the heating device pipe; the second heat exchange part is provided with a second branch pipe that is circulated and conducted with the heating device pipe; the first heat exchange part is also provided with a third branch pipe that is circulated and conducted with the cooling device pipe; the second heat exchange part is also provided with a fourth branch pipe that is circulated and conducted with the cooling device pipe; The bottom end and outer wall of the reactor are respectively provided with a third heat exchange part and a fourth heat exchange part; the third heat exchange part is provided with a fifth branch pipe which is circulated and conducted with the heating device pipe; the fourth heat exchange part is provided with a sixth branch pipe which is circulated and conducted with the heating device pipe; the third heat exchange part is also provided with a seventh branch pipe which is circulated and conducted with the cooling device pipe; the fourth heat exchange part is also provided with an eighth branch pipe which is circulated and conducted with the cooling device pipe.

2. The hot melt adhesive melt and reaction system according to claim 1, characterized in that, The first branch pipe, the second branch pipe, the fifth branch pipe, and the sixth branch pipe are all connected to a heat circulation pipe; the third branch pipe, the fourth branch pipe, the seventh branch pipe, and the eighth branch pipe are all connected to a cold circulation pipe.

3. The hot melt adhesive melt and reaction system according to claim 2, characterized in that, The heating device includes a first mold temperature controller and a second mold temperature controller arranged on the heat circulation pipeline; the first mold temperature controller and the second mold temperature controller are used to independently or jointly control the temperature of the melt kettle and the reaction kettle.

4. The hot melt adhesive melt and reaction system according to claim 2, characterized in that, The cooling device includes a cold oil tank, a heat exchanger, and a refrigeration water tank; the cold oil tank and the refrigeration water tank are respectively connected to the heat exchanger pipeline; the cold oil tank is arranged on the cold circulation pipeline.

5. The hot melt adhesive melt and reaction system according to claim 3, characterized in that, The inlet pipes of the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe, the fifth branch pipe, the sixth branch pipe, the seventh branch pipe and the eighth branch pipe are respectively provided with regulating valves; the outlet pipes of the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe, the fifth branch pipe, the sixth branch pipe, the seventh branch pipe and the eighth branch pipe are respectively provided with first electromagnetic control valves and check valves.

6. The hot melt adhesive melt and reaction system according to claim 2, characterized in that: The heat circulation pipeline is also provided with a high-position oil tank and a low-position oil tank.

7. The hot melt adhesive melt and reaction system according to claim 3, characterized in that, There are two groups of refrigeration water tanks, a gate valve is provided between the two groups of refrigeration water tanks and the two groups of refrigeration water tanks are connected to the heat exchanger pipeline through a circulating water pump.

8. The hot melt adhesive melt and reaction system according to claim 1, characterized in that, The material transfer pipeline is provided with a material transfer pump.

9. The hot melt adhesive melt and reaction system according to claim 1, characterized in that: The reactor is further provided with a discharge pipe connected to an external collecting device, and the discharge pipe is sequentially provided with a second electromagnetic control valve, a discharge pump, and a filter.

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