Temperature control device of hot press

Abstract

The utility model relates to the technical field of hot presses, and particularly discloses a temperature control device of a hot press, which is characterized in that a one-way valve is arranged on a first pipeline, and heat-conducting oil discharged from an oil outlet of a three-way valve can be conveyed to a connecting pipe along the first pipeline due to the one-way conduction function of the one-way valve in a heat-conducting oil conveying stage; in the conduction oil circulation stage, due to the effect of the one-way valve, conduction oil in the fourth pipeline can be directly conveyed to the second pipeline through the connecting pipe, namely the second pipeline, the third pipeline, the fourth pipeline and the connecting pipe form a circulation loop, effective temperature control is achieved, manual valve opening and closing are not needed in the whole process, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot presses, and particularly relates to a temperature control device for a hot press. Background Art

[0002] Hot presses are widely used in the field of sheet processing. They usually include an upper platen and a lower platen. Heat transfer oil channels are arranged in the upper platen and the lower platen, and a heat transfer oil furnace is equipped. The heat transfer oil discharged from the heat transfer oil furnace is transported through a pipeline to the heat transfer oil channel. When the heat transfer oil passes through the heat transfer oil channel, heat exchange occurs to increase the temperature of the upper platen and the lower platen, and finally it is discharged from the other end of the heat transfer oil channel and flows back to the heat transfer oil furnace.

[0003] Usually, a temperature control device is set up to realize the circulation of the heat transfer oil through the temperature control device, which can ensure that the temperatures of the upper platen and the lower platen are controlled within a certain range and can also reduce the energy consumption of the heat transfer oil furnace. This kind of structure can refer to the heat transfer oil temperature control circulation system disclosed in Chinese Patent Publication No. CN203485483U. It adjusts the oil inlet volume of the heat transfer oil through a three-way regulating valve, has the advantages of good stability, long service life, and high temperature control accuracy. By setting 2 sets of heat-using pipelines with the same principle on the hot press to separately control the corresponding heating processes, the production temperature required by the heat-using equipment can be better controlled.

[0004] However, for the above heat transfer oil temperature control circulation system, before the heat transfer oil circulates, a manual stop valve is used to cut off the return oil pipeline to prevent the heat transfer oil from flowing back, which requires manual operation and has low production efficiency.

[0005] Therefore, the prior art still needs to be improved and developed. Content of the Utility Model

[0006] In view of the deficiencies of the above prior art, the purpose of the present utility model is to provide a temperature control device for a hot press to solve the problem that the heat transfer oil temperature control circulation system of the prior art needs to manually close the valve.

[0007] A temperature control device for a hot press includes a temperature control module, and the temperature control module includes:

[0008] An oil inlet pipeline for supplying heat transfer oil;

[0009] A three-way valve having a first oil inlet, a second oil inlet, and an oil outlet, and the oil inlet pipeline is communicated with the first oil inlet;

[0010] A heat conduction pipeline includes a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline that are connected in sequence. The second pipeline is communicated with the second oil inlet, a heat pump is arranged on the second pipeline, the first pipeline is communicated with the oil outlet, and the third pipeline extends to the hot press to supply heat to the hot pressing module of the hot press;

[0011] A connecting pipe is connected between the second pipe and the fourth pipe, and the second pipe, the third pipe, the fourth pipe and the connecting pipe form a circulation loop;

[0012] A check valve is arranged in the first pipe to make the first pipe conduct unidirectionally to the connecting pipe;

[0013] An oil return pipeline is communicated with the oil outlet through the first pipe, and the oil return pipeline is used for recovering the heat-conducting oil.

[0014] Specifically, the oil inlet pipeline includes an oil inlet pipe connected to the first oil inlet, a first valve arranged on the oil inlet pipe, and a first filter.

[0015] Specifically, a drain valve, a pressure gauge and a second valve are further arranged on the second pipe. The drain valve is located between the second oil inlet and the heat pump, and the pressure gauge and the second valve are both located between the heat pump and the second pipe.

[0016] Specifically, a third valve, a second filter and a temperature control meter are arranged on the fourth pipe.

[0017] Specifically, the oil return pipeline includes an oil return pipe connected to the first pipe, and a fourth valve is arranged on the oil return pipe.

[0018] Specifically, there are two groups of the temperature control modules. The hot pressing module includes an upper pressing plate and a lower pressing plate. The third pipes of the two groups of temperature control modules are respectively used for heating the upper pressing plate and the lower pressing plate.

[0019] Specifically, the temperature control device of the hot press further includes a base, and the heat pump and the heat-conducting pipeline are both fixed on the base.

[0020] The beneficial effects of the present utility model:

[0021] The temperature control device of the hot press of the present utility model can be used in cooperation with a heat-conducting oil furnace and a hot press. The oil outlet of the heat-conducting oil furnace is connected to the oil inlet pipeline. The heat-conducting oil discharged from the heat-conducting oil furnace is transported through the oil inlet pipeline to a three-way valve, and is output from the oil outlet of the three-way valve to the first pipeline. Due to the one-way conduction function of the one-way valve, the heat-conducting oil can only be transported from the first pipeline to the connecting pipe, and then is circulated through the second pipeline, the third pipeline, and the fourth pipeline. The third pipeline extends to the hot press to supply heat to the hot pressing module of the hot press, so that the hot pressing module can be maintained at a predetermined temperature, and the heating efficiency is high. By setting a one-way valve on the first pipeline, during the heat-conducting oil transportation stage, due to the one-way conduction function of the one-way valve, the heat-conducting oil discharged from the oil outlet of the three-way valve can be transported along the first pipeline to the connecting pipe direction. During the heat-conducting oil circulation stage, due to the function of the one-way valve, the heat-conducting oil in the fourth pipeline can be directly transported to the second pipeline through the connecting pipe, that is, the second pipeline, the third pipeline, the fourth pipeline and the connecting pipe form a circulation loop to achieve effective temperature control. The whole process does not require manual valve opening and closing, improving the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional view of the temperature control device of the hot press according to Embodiment 1 of the present application Figure 1 ;

[0023] Figure 2 is a three-dimensional view of the temperature control device of the hot press according to Embodiment 1 of the present application Figure 2 ;

[0024] Figure 3 is the structural schematic diagram of the temperature control device of the hot press according to Embodiment 1 of the present application;

[0025] Figure 4 is a three-dimensional view of the temperature control device of the hot press according to Embodiment 2 of the present application Figure 1 ;

[0026] Figure 5 is a three-dimensional view of the temperature control device of the hot press according to Embodiment 2 of the present application Figure 2 ;

[0027] Figure 6 is the structural schematic diagram of the temperature control device of the hot press according to Embodiment 2 of the present application.

[0028] The reference numerals are: oil inlet pipeline 10, three-way valve 20, first oil inlet 21, second oil inlet 22, oil outlet 23, heat conduction pipeline 30, first pipeline 31, second pipeline 32, third pipeline 33, fourth pipeline 34, hot oil pump 35, connecting pipe 40, check valve 50, oil return pipeline 60, oil inlet pipe 11, first valve 12, first filter 13, oil drain valve 36, pressure gauge 37, second valve 38, third valve 39, second filter 310, temperature control meter 311, oil return pipe 61, fourth valve 62, hot press 70, upper platen 71, lower platen 72, base 80. Detailed implementation manners

[0029] The present utility model provides a temperature control device for a hot press. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following takes examples with reference to the attached drawings and further elaborates on the present utility model in detail. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0031] Embodiment 1

[0032] Please refer to Figures 1 to 3 , this embodiment discloses a temperature control device for a hot press, including a temperature control module, and the temperature control module includes:

[0033] The oil inlet pipeline 10 is used to provide heat-conducting oil;

[0034] The three-way valve 20 has a first oil inlet 21, a second oil inlet 22 and an oil outlet 23, and the oil inlet pipeline 10 is communicated with the first oil inlet 21;

[0035] The heat conduction pipeline 30 includes a first pipeline 31, a second pipeline 32, a third pipeline 33 and a fourth pipeline 34 that are connected in sequence. The second pipeline 32 is communicated with the second oil inlet 22. A hot oil pump 35 is provided on the second pipeline 32. The first pipeline 31 is communicated with the oil outlet 23. The third pipeline 33 extends to the hot press 70 to supply heat to the hot pressing module of the hot press 70;

[0036] The connecting pipe 40 is connected between the second pipeline 32 and the fourth pipeline 34, and the second pipeline 32, the third pipeline 33, the fourth pipeline 34 and the connecting pipe 40 form a circulation loop;

[0037] The one-way valve 50 is provided in the first pipeline 31 to enable one-way conduction from the first pipeline 31 to the connecting pipe 40;

[0038] The oil return pipeline 60 is connected to the oil outlet 23 through the first pipeline 31, and the oil return pipeline 60 is used to recover the heat-conducting oil.

[0039] The temperature control device of the hot press disclosed in this embodiment can be used in cooperation with a heat-conducting oil furnace and a hot press 70. Connect the oil outlet of the heat-conducting oil furnace to the oil inlet pipeline 10. The heat-conducting oil discharged from the heat-conducting oil furnace is transported through the oil inlet pipeline 10 to the three-way valve 20, and is output from the oil outlet 23 of the three-way valve 20 to the first pipeline 31. Due to the one-way conduction of the one-way valve 50, the heat-conducting oil can only be transported from the first pipeline 31 to the connecting pipe 40, and then through the second pipeline 32, the third pipeline 33, and the fourth pipeline 34 for circular transportation. The third pipeline 33 extends to the hot press 70 to supply heat to the hot pressing module of the hot press 70, so that the hot pressing module can be maintained at a predetermined temperature, and the heating efficiency is high.

[0040] In addition, in this embodiment, by setting a one-way valve 50 on the first pipeline 31, during the heat-conducting oil transportation stage, due to the one-way conduction of the one-way valve 50, the heat-conducting oil discharged from the oil outlet 23 of the three-way valve 20 can be transported along the direction of the first pipeline 31 to the connecting pipe 40. During the heat-conducting oil circulation stage, due to the function of the one-way valve 50, the heat-conducting oil in the fourth pipeline 34 can be directly transported to the second pipeline 32 through the connecting pipe 40, that is, the second pipeline 32, the third pipeline 33, the fourth pipeline 34 and the connecting pipe 40 form a circulation loop to achieve effective temperature control. The whole process does not require manual valve opening and closing, improving efficiency.

[0041] Furthermore, the oil inlet pipeline 10 of this embodiment includes an oil inlet pipe 11 connected to the first oil inlet 21, a first valve 12 provided on the oil inlet pipe 11, and a first filter 13. By setting the first valve 12, the on-off control of the heat-conducting oil inlet is realized, and the heat-conducting oil inlet volume can also be adjusted through the first valve 12 to adapt to different heating temperatures; a first filter 13 is also provided to filter out oil residues through the first filter 13 to avoid pipeline blockage.

[0042] Furthermore, a drain valve 36, a pressure gauge 37, and a second valve 38 are also provided on the second pipeline 32 of this embodiment. The drain valve 36 is located between the second oil inlet 22 and the heat pump 35, and the pressure gauge 37 and the second valve 38 are both located between the heat pump 35 and the second pipeline 32. The pressure in the circulation loop is detected in real time through the pressure gauge 37. If the pressure in the circulation loop is relatively high, in order to better protect the pipeline, a certain amount of heat-conducting oil can be released through the drain valve 36 to reduce the pressure in the circulation loop.

[0043] In addition, a third valve 39, a second filter 310, and a temperature control meter 311 are provided on the fourth pipeline 34. The temperature control meter 311 is used to monitor the oil temperature of the circulation loop in real time, and cooperate with the control of the second valve 38 and the third valve 39 to control the heat transfer oil flow rate of the circulation loop, so as to achieve the effect of collaborative temperature control.

[0044] Furthermore, the oil return pipeline 60 of this embodiment includes an oil return pipe 61 connected to the first pipeline 31. A fourth valve 62 is provided on the oil return pipe 61. When the temperature of the heat transfer oil in the circulation loop drops, the fourth valve 62 can be opened. The heat transfer oil in the circulation loop enters the second oil inlet 22 of the three-way valve 20 through the connecting pipe 40, and then is discharged from the oil outlet 23 of the three-way valve 20 to the first pipeline 31, and then flows back to the heat transfer oil furnace through the oil return pipe 61 for reheating.

[0045] Furthermore, the temperature control device of the hot press further includes a base 80. The hot oil pump 35 and the heat conduction pipeline 30 are both fixed to the base 80. By setting the base 80, the structural stability of the temperature control device of the hot press is improved.

[0046] Embodiment 2

[0047] Please refer to Figures 4 to 6 , this embodiment has two groups of temperature control modules. The hot pressing module includes an upper pressing plate 71 and a lower pressing plate 72. The third pipelines 33 of the two groups of temperature control modules are respectively used to supply heat to the upper pressing plate 71 and the lower pressing plate 72.

[0048] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention. These equivalent variations or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. A temperature control device for a hot press, comprising a temperature control module, characterized in that, The temperature control module includes: An oil inlet pipeline (10) for providing heat-conducting oil; A three-way valve (20) having a first oil inlet (21), a second oil inlet (22), and an oil outlet (23), wherein the oil inlet pipeline (10) is communicated with the first oil inlet (21); A heat-conducting pipeline (30) including a first pipeline (31), a second pipeline (32), a third pipeline (33), and a fourth pipeline (34) that are sequentially communicated. The second pipeline (32) is communicated with the second oil inlet (22). A heat oil pump (35) is provided on the second pipeline (32). The first pipeline (31) is communicated with the oil outlet (23). The third pipeline (33) extends to a hot press (70) to supply heat to the hot pressing module of the hot press (70); A connecting pipe (40) is connected between the second pipeline (32) and the fourth pipeline (34). The second pipeline (32), the third pipeline (33), the fourth pipeline (34), and the connecting pipe (40) form a circulation loop; A check valve (50) is provided on the first pipeline (31) to make the first pipeline (31) conduct unidirectionally to the connecting pipe (40); An oil return pipeline (60) is communicated with the oil outlet (23) through the first pipeline (31), and the oil return pipeline (60) is used to recover heat-conducting oil.

2. The temperature control device of a hot press according to claim 1, characterized in that, The oil inlet pipeline (10) includes an oil inlet pipe (11) connected to the first oil inlet (21), a first valve (12), and a first filter (13) provided on the oil inlet pipe (11); 3. The temperature control device of a hot press according to claim 1, characterized in that, A drain valve (36), a pressure gauge (37), and a second valve (38) are further provided on the second pipeline (32). The drain valve (36) is located between the second oil inlet (22) and the heat oil pump (35). The pressure gauge (37) and the second valve (38) are both located between the heat oil pump (35) and the second pipeline (32); 4. The temperature control device of a hot press according to claim 1, characterized in that A third valve (39), a second filter (310), and a temperature control meter (311) are provided on the fourth pipeline (34); 5. The temperature control device of a hot press according to claim 1, characterized in that, The oil return pipeline (60) includes an oil return pipe (61) connected to the first pipeline (31), and a fourth valve (62) is provided on the oil return pipe (61); 6. The temperature control device of a hot press according to claim 1, characterized in that, There are two groups of the temperature control modules. The hot pressing module includes an upper pressing plate (71) and a lower pressing plate (72). The third pipelines (33) of the two groups of the temperature control modules are respectively used to supply heat to the upper pressing plate (71) and the lower pressing plate (72); 7. A temperature control device for a hot press according to claim 1, characterized in that, The hot press temperature control device further includes a base (80), and the heat oil pump (35) and the heat-conducting pipeline (30) are both fixed on the base (80).

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