Tea seed conditioning device heated by circulating conduction oil

Abstract

The utility model discloses a tea seed conditioning device heated by circulating heat-conducting oil, which comprises a circulating heating box, a variable-frequency electromagnetic heat-conducting oil machine and a heat-conducting oil circulating pipeline, a roundabout conveying belt device is arranged in the circulating heating box, and a roundabout heating pipe is arranged in the circulating heating box; an electromagnetic heating tank which is transversely arranged is arranged in the variable-frequency electromagnetic heat-conducting oil machine, and an oil passing pipe and an electromagnetic coil which is arranged around the oil passing pipe are arranged in the electromagnetic heating tank; the variable-frequency electromagnetic heat-conducting oil machines are connected in series through an oil conveying pipe of the heat-conducting oil circulating pipeline, and a main circulating oil pump and a standby circulating oil pump which are arranged in parallel are arranged on the heat-conducting oil circulating pipeline. The utility model relates to a tea seed conditioning device heated by circulating conduction oil, which belongs to the technical field of camellia oil production equipment, and can accurately adjust the drying temperature of tea seeds, ensure that the temperature of the tea seeds is 60-80 DEG C, and meet the process requirements of cold pressing of the tea seeds under the condition that the moisture content of the tea seeds is controlled to be 10%.

Description

Technical Field

[0001] The utility model relates to the technical field of camellia oil production equipment, and more specifically, it relates to a tea seed conditioning device with circulating heat-conducting oil heating. Background Technique

[0002] The fatty acid composition of camellia oil has the laudatory names of "king of oils, golden liquid". There are many varieties of oil tea, and the fruit ripening period is generally in early October to early November. The tea fruits are brightly colored, red or yellow, showing a shiny appearance, the fluff on the fruit peel has fallen off, the hairs at the fruit base are hard and thick, the fruit shell is slightly cracked, the seed shell turns black and shiny, and the seed kernel shows oil. When the tea fruits are ripe, they should be harvested in time.

[0003] When producing camellia oil, it is necessary to dry and screen the fresh camellia fruits. On the production line, the tea fruits are conveyed, dried, and the outer shells are removed and other processing procedures to obtain tea seeds. The tea seeds need to be dried. In the prior art, the tea seeds are heated by the hot air generated by electric heating or burning boilers to adjust the water content of the tea seeds. However, through electric heating or hot air heating, since the temperature of the heating wire for electric heating is usually above 200 degrees, and the temperature of the hot air is also above 100 degrees, although the tea seeds can be quickly dried, it is not easy to adjust the temperature of the tea seeds, and it is easy to cause the temperature of the tea seeds to be too high, and the tea seeds are easy to become cooked. It is very difficult to control the temperature of the tea seeds at 60 - 80 °C when dehydrating the tea seeds to meet the temperature requirements for cold pressing the tea seeds. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a tea seed conditioning device with circulating heat-conducting oil heating in view of the deficiencies of the prior art.

[0005] To achieve the above purpose, the utility model discloses a tea seed conditioning device with circulating heat-conducting oil heating, including:

[0006] A circulating heating box, in which a meandering conveyor belt device is arranged, a meandering heating pipe adapted to the conveyor belt of the meandering conveyor belt device is arranged in the circulating heating box, one end of the circulating heating box is provided with a heating inlet communicated with one end of the meandering heating pipe, and the other end of the circulating heating box is provided with a heating outlet communicated with the other end of the meandering heating pipe;

[0007] A variable-frequency electromagnetic heat-conducting oil machine, multiple variable-frequency electromagnetic heat-conducting oil machines are arranged in series, a horizontally arranged electromagnetic heating tank is arranged in the variable-frequency electromagnetic heat-conducting oil machine, an oil pipe is arranged in the electromagnetic heating tank, and an electromagnetic coil is arranged around the oil pipe. A heat-conducting oil inlet communicated with one end of the oil pipe is arranged at the bottom of the variable-frequency electromagnetic heat-conducting oil machine, and a heat-conducting oil outlet communicated with the other end of the oil pipe is arranged at the top of the variable-frequency electromagnetic heat-conducting oil machine;

[0008] The heat-conducting oil circulation pipeline, both ends of the heat-conducting oil circulation pipeline are respectively communicated with the heating outlet and the heating inlet, the oil delivery pipes of the heat-conducting oil circulation pipeline set multiple variable-frequency electromagnetic heat-conducting oil machines in series, and a main circulation oil pump and a standby circulation oil pump arranged in parallel are provided on the oil delivery pipe of the heat-conducting oil circulation pipeline close to the heating outlet;

[0009] The high-level oil filling tank, an oil filling pipe communicated with the oil delivery pipe of the heat-conducting oil circulation pipeline close to the heating outlet is provided at the bottom of the high-level oil filling tank.

[0010] Preferably, the input ends of the main circulation oil pump and the standby circulation oil pump are connected with an oil inlet pipe communicated with the heat-conducting oil circulation pipeline, the output ends of the main circulation oil pump and the standby circulation oil pump are connected with an oil outlet pipe communicated with the heat-conducting oil circulation pipeline, and one end of the oil inlet pipe is communicated with the oil filling pipe.

[0011] Preferably, two oil inlet branch pipes respectively communicated with the input ends of the main circulation oil pump and the standby circulation oil pump are connected to the oil inlet pipe, two oil outlet branch pipes respectively communicated with the output ends of the main circulation oil pump and the standby circulation oil pump are connected to the oil outlet pipe, an oil inlet valve one and an oil inlet valve two are respectively provided on the two oil inlet branch pipes, and an oil outlet valve one and an oil outlet valve two are respectively provided on the two oil outlet branch pipes.

[0012] Preferably, it further includes a low-level oil storage tank and an oil supply pipeline, the oil supply pipeline includes an oil supply pipe and a high-level oil supply branch pipe and a low-level oil supply branch pipe arranged in parallel on the oil supply pipe, the high-level oil supply branch pipe and the low-level oil supply branch pipe are respectively communicated with the high-level oil filling tank and the low-level oil storage tank, a first stop valve and a second stop valve are provided on the high-level oil supply branch pipe and the low-level oil supply branch pipe, a second stop valve is provided on the oil supply pipe, and an oil supply pump is connected to the input end of the oil supply pipe.

[0013] Preferably, an external connecting hose capable of being communicated with an external oil tank and the low-level oil storage tank is connected to the input end of the oil supply pipe.

[0014] Preferably, a supplementary oil tank is provided below the high-level oil filling tank, a high-level oil pipe communicated with the outlet at the bottom end of the high-level oil filling tank is provided at the top end of the supplementary oil tank, one side of the supplementary oil tank is communicated with the oil filling pipe, a return oil pipe communicated with the heating outlet is provided on the other side of the supplementary oil tank, and the outlet position of the return oil pipe is higher than the inlet position of the oil filling pipe.

[0015] Preferably, a one-way valve is provided at the bottom end of the high-level oil pipe.

[0016] Preferably, it further includes a control box, a temperature sensor is provided in the circulation heating box, and the control box is electrically connected with the temperature sensor, multiple variable-frequency electromagnetic heat-conducting oil machines, the main circulation oil pump, the standby circulation oil pump and the oil supply pump.

[0017] The beneficial effects of the present utility model compared with the prior art are as follows:

[0018] (1) The tea seed conditioning device with circulating heat-conducting oil heating of the present utility model can accurately adjust the drying temperature of tea seeds, ensure that the temperature of tea seeds is between 60 - 80 °C, and control the moisture content of tea seeds to 10%, meeting the process requirements of cold pressing of tea seeds;

[0019] (2) The tea seed conditioning device with circulating heat-conducting oil heating of the present utility model is provided with a high-level oil filling tank and a supplementary oil tank to automatically fill the heat-conducting oil circulation pipeline with heat-conducting oil. Description of the Drawings

[0020] Figure 1 is a three-dimensional front view structure diagram of the tea seed conditioning device with circulating heat-conducting oil heating of the present utility model;

[0021] Figure 2 is a front view of the left-side structure of the tea seed conditioning device with circulating heat-conducting oil heating of the present utility model;

[0022] Figure 3 is a top view of the right-side structure of the tea seed conditioning device with circulating heat-conducting oil heating of the present utility model;

[0023] Figure 4 is a rear view of the structure of the tea seed conditioning device with circulating heat-conducting oil heating of the present utility model;

[0024] Figure 5 is a top view of the structure of the tea seed conditioning device with circulating heat-conducting oil heating of the present utility model.

[0025] Wherein: 1 - circulating heating tank, 2 - circuitous conveyor belt device, 3 - circuitous heating pipe, 4 - heating inlet, 6 - heating outlet, 7 - variable-frequency electromagnetic heat-conducting oil machine, 8 - electromagnetic heating tank, 9 - heat-conducting oil inlet, 10 - heat-conducting oil outlet, 11 - heat-conducting oil circulation pipeline, 12 - main circulation oil pump, 13 - standby circulation oil pump, 14 - high-level oil filling tank, 15 - oil filling pipe, 16 - oil inlet pipe, 17 - oil outlet pipe, 18 - oil inlet branch pipe, 19 - oil outlet branch pipe, 20 - oil inlet valve 1, 21 - oil inlet valve 2, 22 - oil outlet valve 1, 23 - oil outlet valve 2, 24 - position storage oil tank, 26 - oil supply pipe, 27 - high-level oil supply branch pipe, 28 - low-level oil supply branch pipe, 29 - first stop valve, 30 - second stop valve, 31 - oil supply pump, 32 - external hose, 33 - supplementary oil tank, 34 - return oil pipe, 35 - one-way valve, 36, high-level oil pipe. Detailed Embodiment

[0026] Next, in combination with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Next, according to the overall structure of the present invention, its embodiments will be described.

[0028] The specific implementation manner of the present invention is as follows:

[0029] Refer to Figures 1-5 , a tea seed conditioning device with circulating heat-conducting oil heating of the present invention includes:

[0030] A circulating heating tank 1, in which a circuitous conveyor belt device 2 is provided. A circuitous heating pipe 3 adapted to the conveyor belt of the circuitous conveyor belt device 2 is provided in the circulating heating tank 1. One end of the circulating heating tank 1 is provided with a heating inlet 4 communicating with one end of the circuitous heating pipe 3, and the other end of the circulating heating tank 1 is provided with a heating outlet 6 communicating with the other end of the circuitous heating pipe 3;

[0031] A variable-frequency electromagnetic heat-conducting oil machine 7, multiple variable-frequency electromagnetic heat-conducting oil machines 7 are connected in series. A horizontally arranged electromagnetic heating tank 8 is provided in the variable-frequency electromagnetic heat-conducting oil machine 7. An oil pipe is provided in the electromagnetic heating tank 8, and an electromagnetic coil is arranged around the oil pipe. The bottom of the variable-frequency electromagnetic heat-conducting oil machine 7 is provided with a heat-conducting oil inlet 9 communicating with one end of the oil pipe, and the top of the variable-frequency electromagnetic heat-conducting oil machine 7 is provided with a heat-conducting oil outlet 10 communicating with the other end of the oil pipe;

[0032] A heat-conducting oil circulation pipeline 11, both ends of the heat-conducting oil circulation pipeline 11 are respectively communicated with the heating outlet 6 and the heating inlet 4. The oil pipelines of the heat-conducting oil circulation pipeline 11 connect multiple variable-frequency electromagnetic heat-conducting oil machines 7 in series. A main circulation oil pump 12 and a standby circulation oil pump 13 are arranged in parallel on the oil pipeline of the heat-conducting oil circulation pipeline 11 near the heating outlet 6;

[0033] A high-level oil filling tank 14, the bottom of the high-level oil filling tank 14 is provided with an oil filling pipe 15 communicating with the oil pipeline of the heat-conducting oil circulation pipeline 11 near the heating outlet 6. The heat-conducting oil in the high-level oil filling tank 14 can be automatically added into the heat-conducting oil circulation pipeline 11 under the action of gravity through the oil filling pipe 15.

[0034] The tea seed tempering device heated by circulating heat-conducting oil of the utility model is provided with a plurality of variable frequency electromagnetic heat-conducting oil machines 7 to heat the heat-conducting oil and adjust the temperature of the heat-conducting oil. The heat-conducting oil is input into the circuitous heating pipe 3 in the circulating heating box 1 through the circulating pump and the heat-conducting oil circulating pipeline 11, and the air in the circulating heating box 1 is heated to increase the temperature in the circulating heating box 1, and the tea seeds on the conveyor belt of the circuitous conveyor belt device 2 are heated and dried, so that the moisture content of the tea seeds is about 10%; the temperature in the circulating heating box 1 is monitored according to the temperature sensor, and the oil temperature of the heat-conducting oil can be adjusted by controlling two or three or all of the plurality of variable frequency electromagnetic heat-conducting oil machines 7 to work, so that the temperature in the circulating heating box 1 can be flexibly adjusted, and the drying temperature of the tea seeds can be accurately adjusted to ensure that the temperature of the tea seeds is 60-80°. After the tea seeds are heated in the circulating heating box 1 for a period of time, the moisture of the tea seeds can be evaporated, and the moisture content of the tea seeds can be controlled to be 8-12%, so as to meet the process requirements of tea seed cold pressing.

[0035] In this embodiment, the input ends of the main circulating oil pump 12 and the standby circulating oil pump 13 are connected to an oil inlet pipe 16 connected to the thermal oil circulation pipeline 11, and the output ends of the main circulating oil pump 12 and the standby circulating oil pump 13 are connected to an oil outlet pipe 17 connected to the thermal oil circulation pipeline 11. One end of the oil inlet pipe 16 is connected to the refueling pipe 15, and the downstream of the oil outlet pipe 17 is connected in series with multiple variable frequency electromagnetic thermal oil machines 7 through an oil pipeline. The standby circulating oil pump 13 plays an emergency standby role. When the main circulating oil pump 12 fails or needs to be repaired, the standby circulating oil pump 13 can be activated to join the work to ensure the continuity of the tea seed drying process.

[0036] In this embodiment, the oil inlet pipe 16 is connected with two oil inlet branches 18 respectively connected with the input ends of the main circulating oil pump 12 and the standby circulating oil pump 13, and the oil outlet pipe 17 is connected with two oil outlet branches 19 respectively connected with the output ends of the main circulating oil pump 12 and the standby circulating oil pump 13. The two oil inlet branches 18 are respectively provided with an oil inlet valve 1 20 and an oil inlet valve 2 21, and the two oil outlet branches 19 are respectively provided with an oil outlet valve 1 22 and an oil outlet valve 2 23. In this embodiment, two circulating oil pumps, the main circulating oil pump 12 and the standby circulating oil pump 13, are provided. When the main circulating oil pump 12 fails, the standby circulating oil pump 13 can be quickly started, and the oil inlet valve 1 20 and the oil outlet valve 1 22 can be closed and the oil inlet valve 2 21 and the oil outlet valve 2 23 can be opened to ensure that the heat transfer oil can circulate in the heat transfer oil circulation pipeline 11 to achieve circulating heating.

[0037] In this embodiment, it further includes a low-level oil storage tank 24 and an oil supply pipeline. The oil supply pipeline includes an oil supply pipe 26, and a high-level oil supply branch pipe 27 and a low-level oil supply branch pipe 28 are arranged in parallel on the oil supply pipe 26. The high-level oil supply branch pipe 27 and the low-level oil supply branch pipe 28 are respectively communicated with the tops of the high-level oil filling tank 14 and the low-level oil storage tank 24. A first stop valve 29 and a second stop valve 30 are provided on the high-level oil supply branch pipe 27 and the low-level oil supply branch pipe 28, and a second stop valve 30 is provided on the oil supply pipe 26. The input end of the oil supply pipe 26 is connected with an oil supply pump 31. Through the oil supply pump 31, the external heat-conducting oil can reach the high-level oil filling tank 14 and the low-level oil storage tank 24 through the oil supply pipe 26, the high-level oil supply branch pipe 27 or the low-level oil supply branch pipe 28.

[0038] The low-level oil storage tank 24 is used for storing heat-conducting oil. When the heat-conducting oil path in the high-level oil filling tank 14 is insufficient, the oil supply pipe 26 can be communicated with the oil unloading port at the bottom of the low-level oil storage tank 24, and the heat-conducting oil in the low-level oil storage tank 24 can be pumped into the high-level oil filling tank 14 through the oil supply pump 31.

[0039] In this embodiment, the input end of the oil supply pipe 26 is connected with an external hose 32 that can be communicated with an external oil tank and the low-level oil storage tank 24. The external hose 32 can be communicated with the external oil tank and the low-level oil storage tank 24.

[0040] In this embodiment, a supplementary oil tank 33 is provided below the high-level oil filling tank 14. The top end of the supplementary oil tank 33 is provided with a high-level oil pipe 36 that is communicated with the outlet at the bottom end of the high-level oil filling tank 14. One side of the supplementary oil tank 33 is communicated with the oil filling pipe 15, and the other side of the supplementary oil tank 33 is provided with a return oil pipe 34 that is communicated with the heating outlet 6. The outlet position of the return oil pipe 34 is higher than the inlet position of the oil filling pipe 15. The heat-conducting oil in the high-level oil filling tank 14 flows into the supplementary oil tank 33 through the high-level oil pipe 36 under the action of gravity, then flows from the supplementary oil tank 33 to the oil filling pipe 15, and then flows into the heat-conducting oil circulation pipeline 11 from the oil filling pipe 15. After flowing into the meandering heating pipe 3 in the circulation heating tank 1, it then flows into the supplementary oil tank 33 from the return oil pipe 34. When the supplementary oil tank 33 is filled with heat-conducting oil, the high-level oil filling tank 14 no longer injects heat-conducting oil into the supplementary oil tank 33 through the high-level oil pipe 36.

[0041] In this embodiment, a check valve 35 is provided at the bottom end of the high-level oil pipe 36. The function of the check valve 35 is to prevent the heat-conducting oil in the supplementary oil tank 33 from flowing into the high-level oil pipe 36, resulting in the heat of the heat-conducting oil in the supplementary oil tank 33 being dissipated into the high-level oil pipe 36, causing heat loss.

[0042] In this embodiment, it further includes a control box. A temperature sensor is provided in the circulating heating tank 1. The control box is electrically connected to the temperature sensor, multiple variable-frequency electromagnetic heat-conducting oil machines 7, the main circulation oil pump 12, the standby circulation oil pump 13, and the oil supply pump 31. The control box is used to intelligently control the variable-frequency electromagnetic heat-conducting oil machines 7, the main circulation oil pump 12, the standby circulation oil pump 13, and the oil supply pump 31, collect the heating temperature in the circulating heating tank 1, and then automatically control the oil temperature of the heat-conducting oil to automatically adjust the temperature in the circulating heating tank 1, so as to realize the automatic conditioning of tea seeds and ensure that the water content of the tea seeds meets the pressing requirements stably.

[0043] Working principle:

[0044] The heat-conducting oil in the high-level oil filling tank 14 flows through the high-level oil pipe 36 under the action of gravity and reaches the oil replenishing tank 33, then flows from the oil replenishing tank 33 to the oil filling pipe 15, and then flows into the heat-conducting oil circulation pipeline 11 from the oil filling pipe 15. After the heat-conducting oil circulation pipeline 11 flows into the meandering heating pipe 3 in the circulating heating tank 1, it then flows back into the oil replenishing tank 33 from the oil return pipe 34. When the oil replenishing tank 33 is full of heat-conducting oil, the high-level oil filling tank 14 no longer injects heat-conducting oil into the oil replenishing tank 33 through the high-level oil pipe 36;

[0045] The heat-conducting oil in the heat-conducting oil circulation pipeline 11 is powered by the main circulation oil pump 12 or the standby circulation oil pump 13, circulates, flows into multiple variable-frequency electromagnetic heat-conducting oil machines 7 for circulating heating, and then flows into the meandering heating pipe 3 in the circulating heating tank 1 to heat and dry the tea seeds in the circulating heating tank 1.

[0046] The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which will not affect the implementation effect of the present invention and the practicality of the patent.

Claims

1. A tea seed conditioning device heated by circulating heat-conducting oil, characterized in that, Comprising: A circulating heating box (1), in which there is a meandering conveyor belt device (2), and a meandering heating pipe (3) adapted to the conveyor belt of the meandering conveyor belt device (2) is provided in the circulating heating box (1). One end of the circulating heating box (1) is provided with a heating inlet (4) communicating with one end of the meandering heating pipe (3), and the other end of the circulating heating box (1) is provided with a heating outlet (6) communicating with the other end of the meandering heating pipe (3); A variable-frequency electromagnetic heat-conducting oil machine (7), a plurality of the variable-frequency electromagnetic heat-conducting oil machines (7) are arranged in series. A horizontally arranged electromagnetic heating tank (8) is provided in the variable-frequency electromagnetic heat-conducting oil machine (7). An oil passing pipe and an electromagnetic coil surrounding the oil passing pipe are provided in the electromagnetic heating tank (8). The bottom of the variable-frequency electromagnetic heat-conducting oil machine (7) is provided with a heat-conducting oil inlet (9) communicating with one end of the oil passing pipe, and the top of the variable-frequency electromagnetic heat-conducting oil machine (7) is provided with a heat-conducting oil outlet (10) communicating with the other end of the oil passing pipe; A heat-conducting oil circulating pipeline (11), both ends of the heat-conducting oil circulating pipeline (11) are respectively communicated with the heating outlet (6) and the heating inlet (4). The oil delivery pipes of the heat-conducting oil circulating pipeline (11) arrange a plurality of the variable-frequency electromagnetic heat-conducting oil machines (7) in series. A main circulating oil pump (12) and a standby circulating oil pump (13) arranged in parallel are provided on the oil delivery pipe of the heat-conducting oil circulating pipeline (11) close to the heating outlet (6); A high-level oil storage tank (14), the bottom of the high-level oil storage tank (14) is provided with an oil filling pipe (15) communicated with the oil delivery pipe of the heat-conducting oil circulating pipeline (11) close to the heating outlet (6).

2. The tea seed conditioning device with circulating heat-conducting oil heating according to claim 1, characterized in that, The input ends of the main circulating oil pump (12) and the standby circulating oil pump (13) are connected with an oil inlet pipe (16) communicated with the heat-conducting oil circulating pipeline (11), and the output ends of the main circulating oil pump (12) and the standby circulating oil pump (13) are connected with an oil outlet pipe (17) communicated with the heat-conducting oil circulating pipeline (11). One end of the oil inlet pipe (16) is communicated with the oil filling pipe (15).

3. A tea seed conditioning device with circulating heat-conducting oil heating according to claim 2, characterized in that, Two oil inlet branch pipes (18) respectively communicated with the input ends of the main circulating oil pump (12) and the standby circulating oil pump (13) are connected to the oil inlet pipe (16), and two oil outlet branch pipes (19) respectively communicated with the output ends of the main circulating oil pump (12) and the standby circulating oil pump (13) are connected to the oil outlet pipe (17). An oil inlet valve one (20) and an oil inlet valve two (21) are respectively provided on the two oil inlet branch pipes (18), and an oil outlet valve one (22) and an oil outlet valve two (23) are respectively provided on the two oil outlet branch pipes (19).

4. A tea seed conditioning device with circulating heat-conducting oil heating according to claim 3, characterized in that, It further includes a low-position oil storage tank (24) and an oil supply pipeline. The oil supply pipeline includes an oil supply pipe (26), and a high-position oil supply branch pipe (27) and a low-position oil supply branch pipe (28) which are arranged in parallel on the oil supply pipe (26). The high-position oil supply branch pipe (27) and the low-position oil supply branch pipe (28) are respectively communicated with the high-position oil filling tank (14) and the low-position oil storage tank (24). A first stop valve (29) and a second stop valve (30) are provided on the high-position oil supply branch pipe (27) and the low-position oil supply branch pipe (28). A second stop valve (30) is provided on the oil supply pipe (26). The input end of the oil supply pipe (26) is connected with an oil supply pump (31).

5. A tea seed conditioning device with circulating heat transfer oil heating according to claim 4, characterized in that, The input end of the oil supply pipe (26) is connected with an external hose (32) which can be communicated with an external oil tank and the low-position oil storage tank (24).

6. A tea seed conditioning device heated by circulating heat transfer oil according to claim 4 or 5, characterized in that A supplementary oil tank (33) is provided below the high-position oil filling tank (14). The top of the supplementary oil tank (33) is provided with a high-position oil pipe (36) which is communicated with the outlet at the bottom end of the high-position oil filling tank (14). One side of the supplementary oil tank (33) is communicated with the oil filling pipe (15). The other side of the supplementary oil tank (33) is provided with a return oil pipe (34) which is communicated with the heating outlet (6). The outlet position of the return oil pipe (34) is higher than the inlet position of the oil filling pipe (15).

7. A tea seed conditioning device heated by circulating heat-conducting oil according to claim 6, characterized in that, A one-way valve (35) is provided at the bottom end of the high-position oil pipe (36).

8. A tea seed conditioning device heated by circulating heat-conducting oil according to claim 6, characterized in that, It further includes a control box. A temperature sensor is provided in the circulation heating box (1). The control box is electrically connected with the temperature sensor, multiple variable-frequency electromagnetic heat-conducting oil engines (7), a main circulation oil pump (12), a standby circulation oil pump (13) and an oil supply pump (31).

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