Heating and cooling device of reaction tank

Abstract

The utility model belongs to the technical field of reaction tanks, and relates to a heating and cooling device of a reaction tank, which comprises the reaction tank, a steam pipeline, a cooling water inlet pipeline, a cooling water drainage pipeline, a condensate water drainage pipeline and a three-way valve. When the reaction tank needs to be cooled, steam provides heat energy for materials in the reaction tank through the outer coil pipe, the steam is converted into condensate water after being cooled in the outer coil pipe, and the condensate water flows into the condensate water drainage pipeline through the outer coil pipe and enters the water storage tank through the condensate water drainage pipeline. Cooling water enters the outer coil pipe from the cooling water inlet main pipe through the cooling water inlet branch pipe, can also enter the condensate water drainage pipeline through the three-way valve connected with the cooling water inlet main pipe, and then enters the outer coil pipe through the condensate water drainage pipeline. The three-way valve is used for controlling cooling water to enter the outer coil pipe, preventing steam from entering the cooling water inlet header pipe and preventing condensate water from converging into the cooling water inlet header pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction tanks, and in particular relates to a heating and cooling device for a reaction tank. Background Art

[0002] In the prior art, the outer coils on the surface of the reactor typically heat the materials inside by feeding steam, water, electricity, or other media, thereby promoting proper reaction. However, if the temperature inside the reactor becomes too high, cooling is necessary. There are various ways to cool the materials inside the reactor, including stopping the feed to the reactor or supplying cooling water to the outer coils.

[0003] The existing technology uses a cooling method by stopping feeding, which is not conducive to the normal reaction of the materials in the reaction tank and affects the reaction effect. When the existing technology uses cooling water for cooling, it usually only connects a single cooling water inlet pipe to the outer coil of the reaction tank, and the cooling water is discharged through the existing drain port on the outer coil. The cooling structure of the reaction tank cannot meet the requirements of uniform water inflow and rapid drainage of cooling water, which affects the cooling effect and cooling efficiency of the reaction tank. Summary of the Invention

[0004] The utility model provides a heating and cooling device for a reaction tank to solve the problem that the cooling structure of the reaction tank in the prior art cannot meet the requirements of uniform water inflow and rapid water drainage of the cooling water, thereby affecting the cooling effect and cooling efficiency of the reaction tank.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] The utility model provides a heating and cooling device for a reaction tank, comprising a reaction tank, a steam pipe, and a cooling water inlet pipe. The outer surface of the reaction tank is fixedly connected to an outer coil, and the outer coil is connected to a steam pipe, multiple cooling water inlet pipes, multiple cooling water drainage pipes, and a condensed water drainage pipe. The multiple cooling water inlet pipes and multiple cooling water drainage pipes are all connected to the outer coil at different heights.

[0007] The steam pipe is also connected to the cooling water drainage pipe. A three-way valve is provided on the cooling water inlet pipe, and the three-way valve is also connected to the condensate drainage pipe.

[0008] In a further embodiment, the steam pipe comprises a steam main pipe connected to the outer coil pipe via a steam pipe joint, and the steam pipe provides steam to the outer coil pipe to provide heat energy.

[0009] In a further embodiment, a first valve is provided on the steam main pipe. A steam external pipe is connected downstream of the first valve near the outer coil. The steam external pipe is connected to one of the cooling water drainage pipes. A second valve is also provided on the steam external pipe. The first valve is used to control steam discharge, while the second valve is used to control cooling water drainage and, secondly, to prevent steam from entering the steam external pipe.

[0010] In a further embodiment, the cooling water inlet pipeline includes a cooling water inlet main pipe and cooling water inlet branch pipes. Inlet pipe joints are provided at different heights of the outer coil. The cooling water inlet branch pipes are connected to the outer coil through the inlet pipe joints. The cooling water inlet branch pipes are all connected to the cooling water inlet main pipe. The cooling water inlet branch pipes are used to discharge cooling water from the outer coil.

[0011] In a further embodiment, a first water inlet valve is provided on the cooling water inlet main pipe, a second water inlet valve is provided on the cooling water inlet branch pipe, and a three-way valve is connected to the end of the cooling water inlet main pipe away from the water inlet. The three-way valve is also connected to a condensate drainage pipe. The three-way valve is used to control the supply of cooling water and the discharge of condensate.

[0012] In a further embodiment, a U-shaped tube is provided on one side of the cooling water inlet main pipe. The U-shaped tube is provided with a third inlet valve and a fourth inlet valve. The first inlet valve is located between the inlet and outlet of the U-shaped tube. The U-shaped tube is also provided with a filter and a pneumatic control valve. The pneumatic control valve and filter are located between the third and fourth inlet valves. The filter is used to filter the cooling water, and the pneumatic control valve is used to monitor the flow rate and flow of the cooling water.

[0013] In a further embodiment, the cooling water drainage pipeline includes a cooling water drainage main pipe and cooling water drainage branch pipes. Drain pipe joints are fixedly installed at different heights on the outer coil. These drain pipe joints are connected to the cooling water drainage branch pipes, and each cooling water drainage branch pipe is connected to the cooling water drainage main pipe. The purpose of the fixed drainage pipe joints at different heights is to achieve layered drainage and improve drainage speed.

[0014] In a further embodiment, a first drain valve is provided on the cooling water drainage main pipe, and a second drain valve is provided on the cooling water drainage branch pipe. The second drain valve is used to control the drainage of the cooling water drainage branch pipe.

[0015] In a further embodiment, the condensate drainage pipe is provided with a residual water discharge valve and a condensate drain valve. One end of the condensate drainage pipe is connected to an inlet and outlet joint. An inlet joint is further provided between the inlet and outlet joint and the residual water discharge valve. The inlet joint is connected to a three-way valve. The condensate drainage pipe is also connected to a water storage tank. The inlet and outlet joint is used to intake cooling water and discharge condensate, and the residual water discharge valve is used to discharge residual water in the pipe.

[0016] In a further embodiment, a discharge pipe is connected to the bottom of the reactor. The discharge pipe is provided with a main discharge valve, a three-way water inlet, and a sampling port. A cleaning pipe is connected to one side of the three-way water inlet. The water in the cleaning pipe is used to flush and clean the residual material in the discharge pipe.

[0017] Through the above technical solution, the beneficial effects of the utility model are:

[0018] When the utility model is used, a worker opens the steam main pipe to allow steam to enter the outer coil pipe through the steam main pipe, and the steam provides heat energy for the material in the reaction tank through the outer coil pipe.

[0019] Cooling water enters the outer coil through multiple cooling water inlet pipes and a condensate drain pipe connected to a three-way valve, cooling the materials in the reactor. The three-way valve controls the flow of cooling water into the outer coil, prevents steam from entering the cooling water inlet pipe, and blocks condensate from entering the cooling water main.

[0020] After the cooling water in the outer coil is cooled, it is discharged through multiple cooling water drainage pipes, ensuring the rapid discharge of cooling water.

[0021] After being cooled in the outer coil, the steam is converted into condensed water, which then flows through the outer coil into the condensate drainage pipe and then into the water storage tank. This allows the condensate to be recovered and used later. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a side structural diagram of the utility model.

[0023] Figure 2 This is a schematic diagram of the cooling water inlet pipe structure of the utility model.

[0024] Figure 3 This is a schematic structural diagram of the steam pipe and cooling water outlet pipe of the utility model.

[0025] Figure 4 This is a schematic diagram of the large-scale structure of the three-way valve of the present utility model.

[0026] Figure 5 It is a front structural schematic diagram of the present utility model.

[0027] The reference numerals in the accompanying drawings are:

[0028] 1-reaction tank, 11-external coil, 2-steam pipe, 3-cooling water inlet pipe, 4-cooling water drain pipe, 5-cleaning pipe, 6-discharge pipe, 7-condensate drain pipe;

[0029] 21-steam main pipe, 22-first valve, 23-second valve, 24-steam pipe joint, 25-steam external pipe;

[0030] 30 - cooling water inlet main pipe, 31 - third water inlet valve, 32 - filter, 33 - pneumatic regulating valve, 34 - fourth water inlet valve, 35 - first water inlet valve, 36 - second water inlet valve, 37 - three-way valve, 38 - first water inlet pipe, 39 - second water inlet pipe, 310 - first water inlet pipe joint, 311 - second water inlet pipe joint;

[0031] 41 - cooling water drainage main pipe, 42 - first drainage valve, 43 - second drainage valve, 44 - first drainage pipe, 45 - first drainage pipe joint, 46 - second drainage pipe, 47 - second drainage pipe joint;

[0032] 51-first cleaning valve, 52-second cleaning valve, 53-third cleaning valve;

[0033] 61-discharge main valve, 62-discharge main pipe, 63-three-way water diverter, 64-sampling port;

[0034] 71- residual water discharge valve, 72- condensate drain valve. DETAILED DESCRIPTION

[0035] The present invention is further described below with reference to the accompanying drawings and specific embodiments: In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Figure 1 Directions shown shall prevail.

[0036] The filter 32 and pneumatic control valve 33 involved in the following description of this case are both produced by Shanghai Hugong Valve Factory (Group) Co., Ltd. The product model of the filter 32 is DN100 Y-type filter, and the product model of the pneumatic control valve 33 is ZJHM-16C.

[0037] like Figures 1 to 5As shown, this embodiment provides a heating and cooling device for a reaction tank, comprising a reaction tank 1, a steam pipe 2, and a cooling water inlet pipe 3. An outer coil 11 is fixedly connected to the outer surface of the reaction tank 1. The outer coil 11 is connected to the steam pipe 2, multiple cooling water inlet pipes 3, multiple cooling water drain pipes 4, and a condensed water drain pipe 7. The multiple cooling water inlet pipes 3 and multiple cooling water drain pipes 4 are each connected to the outer coil 11 at different heights. The steam pipe 2 is also connected to the cooling water drain pipe 4. A three-way valve 37 is provided on the cooling water inlet pipe 3, which is also connected to the condensed water drain pipe 7.

[0038] Specifically, the steam pipe 2 includes a steam main pipe 21, which is connected to the outer coil 11 via a steam pipe joint 24. The steam pipe joint 24 is located at the lower portion of the outer coil 11. A first valve 22 is provided on the steam main pipe 21. A steam external pipe 25 is connected downstream of the first valve 22 near the outer coil 11. The steam external pipe 25 is connected to one of the cooling water drainage pipes 4 and is provided with a second valve 23. The provision of the steam external pipe 25 in this embodiment allows cooling water to be drained not only through the cooling water joint and the cooling water drainage pipe, but also through the steam pipe joint 24, a portion of the steam main pipe 21, the steam external pipe 25, and the cooling water drainage pipe 4. This allows the steam pipe joint 24 to serve both steam intake and cooling water discharge.

[0039] The cooling water inlet pipeline 3 includes a cooling water inlet main pipe 30 and cooling water inlet branch pipes. Inlet pipe joints are provided at different heights of the outer coil 11. The cooling water inlet branch pipes are connected to the outer coil 11 through the inlet pipe joints. The cooling water inlet branch pipes are all connected to the cooling water inlet main pipe 30. Specifically, the upper portion of the outer coil 11 is connected to a first inlet joint 310, and the middle portion is connected to a second inlet joint 311. The cooling water inlet branch pipes include a first inlet pipe 38 and a second inlet pipe 39. The first inlet joint 310 and the second inlet joint 311 are connected to the first inlet pipe 38 and the second inlet pipe 39, respectively.

[0040] The cooling water inlet main pipe 30 is provided with a first water inlet valve 35 , and the cooling water inlet branch pipe is provided with a second water inlet valve 36 , that is, the first water inlet pipe 38 and the second water inlet pipe 39 are both provided with a second water inlet valve 36 .

[0041] One end of the cooling water inlet main pipe 30 away from the water inlet is connected to a three-way valve 37 , and the three-way valve 37 is also connected to a condensate drainage pipe 7 .

[0042] One side of the cooling water inlet main pipe 30 is connected to a U-shaped pipe, and a third water inlet valve 31 and a fourth water inlet valve 34 are provided on the U-shaped pipe. The first water inlet valve 35 is located between the water inlet and the water outlet of the U-shaped pipe. A Y-type filter 32 and a pneumatic regulating valve 33 are also provided on the U-shaped pipe. The pneumatic regulating valve 33 and the Y-type filter 32 are located between the third water inlet valve 31 and the fourth water inlet valve 34.

[0043] The cooling water drainage pipeline 4 includes a cooling water drainage main pipe 41 and cooling water drainage branch pipes. Drain pipe joints are fixedly installed at different heights on the outer coil 11 and connected to the cooling water drainage branch pipes. Each cooling water drainage branch pipe is connected to the cooling water drainage main pipe 41. Specifically, a first drainage pipe joint 45 is connected to the top of the outer coil 11, and a second drainage pipe joint 47 is connected to the middle. The cooling water drainage branch pipes include a first drainage pipe 44 and a second drainage pipe 46, which are connected to the first drainage pipe 44 and the second drainage pipe 46, respectively. Cooling water is drained from the top, middle, and bottom of the outer coil 11 through the first drainage pipe joint 45, the second drainage pipe joint 47, and the steam pipe joint 24, respectively.

[0044] The cooling water drainage main pipe 41 is provided with a first drainage valve 42 , and the cooling water drainage branch pipe is provided with a second drainage valve 43 , that is, the first drainage pipe 44 and the second drainage pipe 46 are both provided with a second drainage valve 43 .

[0045] The condensed water drainage pipe 7 is provided with a residual water discharge valve 71 and a condensed water drain valve 72. One end of the condensed water drainage pipe 7 is connected to an inlet and outlet joint, which is connected to the lower part of the outer coil 11. Since the inlet and outlet joint of the condensed water drainage pipe 7 is located at the lower part of the outer coil 11, the first water inlet joint 310 and the second water inlet joint 311 are respectively located at the upper part and the middle part of the outer coil 11, and the cooling water inlet pipe 3 is also connected to the condensed water drainage pipe 7, the cooling water can enter from the upper, middle and lower heights of the outer coil 11, which makes the water intake faster and the cooling of the reaction tank 1 more uniform. In addition, an inlet joint is provided between the inlet and outlet joint and the residual water discharge valve 71. The inlet joint is connected to the three-way valve 37. The condensed water drainage pipe 7 is also connected to the water storage tank.

[0046] The bottom of the reactor 1 is also connected to a discharge pipe 6, which is equipped with a main discharge valve 61, a three-way water diverter 63, and a sampling port 64. One side of the three-way water diverter 63 is connected to a cleaning pipe 5. The cleaning pipe 5 is equipped with a first cleaning valve 51, a second cleaning valve 52, and a third cleaning valve 53. The second cleaning valve 52 is located between the first and third cleaning valves 51, 53. One end of the cleaning pipe 5 adjacent to the third cleaning valve 53 is connected to the three-way water diverter 63. The other end of the second cleaning valve 52 is connected to the discharge pipe 6 and is located between the three-way water diverter 63 and the sampling port 64 provided on the discharge pipe 6.

[0047] In this embodiment, the flow of steam, cooling water inlet, cooling water outlet, and condensate outlet is as follows:

[0048] Steam flow: Steam enters from the steam main pipe 21 , passes through the steam branch pipe connected to the first valve 22 and enters the outer coil 11 , and heats the material in the reaction tank 1 through the outer coil 11 .

[0049] The direction of cooling water inlet: When the first water inlet valve 35 is closed, the cooling water flows in from the cooling water inlet main pipe 30, passes through the third water inlet valve 31 and enters the U-shaped pipe. The cooling water passes through the Y-type filter 32 to remove impurities, the purpose of which is to reduce pipe blockage caused by impurity precipitation in the pipe. The filtered cooling water passes through the pneumatic regulating valve 33, which detects the flow rate and flow of the cooling water. The staff adjusts the flow rate and flow of the cooling water according to the flow rate and flow of the cooling water. The regulated cooling water is then passed through the fourth inlet. The water valve 34 flows into the cooling water inlet main pipe 30 again, and enters the first water inlet pipe 38 and the second water inlet pipe 39 respectively through the second water inlet valve 36, and enters the outer coil 11 through the first water inlet pipe joint 310 and the second water inlet pipe joint 311 connected to the first water inlet pipe 38 and the second water inlet pipe 39 respectively. At the same time, the cooling water also enters the condensate drainage pipe 7 through the three-way valve 37, and enters the outer coil 11 through the condensate drainage pipe 7, and then the high-temperature material in the reaction tank 1 is cooled by the cooling water inside the outer coil 11.

[0050] The cooling water flows in the following direction when the first water inlet valve 35 is open: when the filter element of the Y-type filter 32 needs to be replaced, and when the pneumatic control valve 33 needs to be repaired, or when the Y-type filter 32 and the pneumatic control valve 33 fail, the staff closes the third water inlet valve 31 and the fourth water inlet valve 34, and then opens the first water inlet valve 35 to ensure normal supply of cooling water to avoid affecting the normal reaction operation of the reaction tank 1.

[0051] Control operation mode of cooling water supply: the third water inlet valve 31 and the fourth water inlet valve 34 are in the normally open state, and the first water inlet valve 35 is in the normally closed state. Therefore, when the material in the reaction tank 1 needs to be cooled, the staff only needs to open the second water inlet valve 36 and the three-way valve 37 to provide cooling water to the outer coil 11 of the reaction tank 1, thereby cooling the material in the reaction tank 1.

[0052] The scenario in which the three-way valve 38 is closed: when the steam cools naturally, the generated condensed water flows into the condensed water drainage pipe 7. Closing the three-way valve 37 is to prevent the cooling water from entering the condensed water drainage pipe 7 to avoid mixing with the condensed water.

[0053] Cooling water drainage flow direction: The cooling water in the outer coil 11 is discharged into the cooling water drainage main pipe 41 in sequence through the first drainage pipe 44, the second drainage pipe 46 and the steam external pipe 25.

[0054] The first and second valves 22 and 23 are used as follows: Before steam flow, first open the first valve 22, then close the second valve 23 and the second drain valve 43 of the cooling water drain pipe 4. Then, close the second inlet valve 36 and three-way valve 37 of the cooling water inlet pipe 3, and the residual water drain valve 71 and condensate drain valve 72 of the condensate drain pipe 7. Steam flow begins. Before cooling water is discharged, first close the first valve 22, then open the second valve 23 and the second drain valve 43, and then discharge the cooling water.

[0055] Condensate discharge direction: Condensate flows from the outer coil 11 into the condensate drain pipe 7 and enters the water storage tank through the condensate drain valve 72.

[0056] The scenario in which the condensate drain valve 72 is closed: after the condensate is discharged, the staff closes the condensate drain valve 72 and opens the three-way valve 37, allowing the cooling water to pass through the condensate drain pipe 7 into the outer coil 11 to provide cooling. Closing the condensate drain valve 72 is also to prevent cooling water from entering the water tank, and to prevent steam from entering the water tank when steam is passed.

[0057] The operating scenario of the residual water discharge valve 71 is as follows: before the outer coil 11 needs cooling water, the residual water discharge valve 71 is closed; before the outer coil 11 needs to discharge condensed water, the residual water discharge valve 71 is also closed; before the outer coil 11 needs to pass steam, the residual water discharge valve 71 is opened first to discharge the residual condensed water and cooling water inside, and then the residual water discharge valve 71 is closed before passing steam.

[0058] Working mode of this utility model:

[0059] Steam intake operation: The staff opens the steam main control to allow steam to enter the steam main pipe 21 , and the steam enters the outer coil 11 through the steam pipe joint 24 connected to the steam main pipe 21 to provide heat energy for the material in the reaction tank 1 .

[0060] Operation of cooling water inlet: The staff turns on the cooling water main control to allow cooling water to enter the cooling water inlet main pipe 30. The cooling water enters through the U-shaped pipe, the first water inlet pipe 38, the second water inlet pipe 39 and the condensate drainage pipe 7 connected to the cooling water inlet main pipe 30, and enters the outer coil 11 in turn through the first water inlet pipe 38, the first water inlet pipe joint 310, the second water inlet pipe joint 311 and the water inlet and outlet joint to provide cooling for the material in the reaction tank 1.

[0061] Steam pipe joint cooling water drainage operation: the staff first closes the first valve 22 and then opens the first drain valve 42, the second drain valve 43, and the second valve 23 in sequence to drain the cooling water.

[0062] Operation of three-way valve 37:

[0063] The first situation is that when cooling water needs to enter the outer coil 11, the staff opens the three-way valve 37;

[0064] The second situation is that before the steam is passed, the staff closes the three-way valve 37. The purpose of closing the three-way valve 37 is to prevent the cooling water from flowing back into the outer coil 11, thereby affecting the steam flow.

[0065] The third situation is that when draining condensed water, the staff closes the three-way valve 37 to prevent the condensed water from being impacted by the cooling water and then returning to the outer coil 11.

[0066] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A heating and cooling device for a reaction tank, comprising a reaction tank (1), a steam pipe (2), and a cooling water inlet pipe (3), wherein an outer coil (11) is fixedly connected to the outer surface of the reaction tank (1), characterized in that: The outer coil (11) is connected to a steam pipe (2), a plurality of cooling water inlet pipes (3), a plurality of cooling water drainage pipes (4), and a condensed water drainage pipe (7), wherein the plurality of cooling water inlet pipes (3) and the plurality of cooling water drainage pipes (4) are all connected to the outer coil (11) at different heights; The steam pipe (2) is also connected to the cooling water drainage pipe (4), and a three-way valve (37) is provided on the cooling water inlet pipe (3), and the three-way valve (37) is also connected to the condensate drainage pipe (7).

2. The heating and cooling device for a reaction tank according to claim 1, characterized in that: The steam pipeline (2) comprises a steam main pipe (21), and the steam main pipe (21) is connected to the outer coil (11) via a steam pipe joint (24).

3. The heating and cooling device for a reaction tank according to claim 2, characterized in that: A first valve (22) is provided on the steam main pipe (21), and a steam external pipe (25) is connected downstream of the first valve (22) near the outer coil (11), the steam external pipe (25) is communicated with one of the cooling water drainage pipes (4), and a second valve (23) is provided on the steam external pipe (25).

4. The heating and cooling device for a reaction tank according to claim 1, characterized in that: The cooling water inlet pipe (3) comprises a cooling water inlet main pipe (30) and cooling water inlet branch pipes. Inlet pipe joints are provided at different heights of the outer coil (11). The cooling water inlet branch pipes are connected to the outer coil (11) via the inlet pipe joints. The cooling water inlet branch pipes are all connected to the cooling water inlet main pipe (30).

5. The heating and cooling device for a reaction tank according to claim 4, characterized in that: The cooling water inlet main pipe (30) is provided with a first water inlet valve (35), the cooling water inlet branch pipe is provided with a second water inlet valve (36), and the end of the cooling water inlet main pipe (30) away from the water inlet is connected to a three-way valve (37), and the three-way valve (37) is also connected to a condensate drainage pipe (7).

6. The heating and cooling device for a reaction tank according to claim 4, characterized in that: A U-shaped tube is provided on one side of the cooling water inlet main pipe (30), and a third water inlet valve (31) and a fourth water inlet valve (34) are provided on the U-shaped tube. The first water inlet valve (35) is located between the water inlet and the water outlet of the U-shaped tube. A filter (32) and a pneumatic regulating valve (33) are also provided on the U-shaped tube. The pneumatic regulating valve (33) and the filter (32) are located between the third water inlet valve (31) and the fourth water inlet valve (34).

7. The heating and cooling device for a reaction tank according to claim 1, characterized in that: The cooling water drainage pipeline (4) includes a cooling water drainage main pipe (41) and cooling water drainage branches. Drainage pipe joints are fixedly provided at different heights on the outer coil (11). The drainage pipe joints are connected to the cooling water drainage branches. The cooling water drainage branches are all connected to the cooling water drainage main pipe (41).

8. The heating and cooling device for a reaction tank according to claim 7, characterized in that: The cooling water drainage main pipe (41) is provided with a first drainage valve (42), and the cooling water drainage branch pipe is provided with a second drainage valve (43).

9. The heating and cooling device for a reaction tank according to claim 1, characterized in that: The condensed water drainage pipe (7) is provided with a residual water discharge valve (71) and a condensed water drainage valve (72); one end of the condensed water drainage pipe (7) is connected to an inlet and outlet joint; a water inlet joint is further provided between the inlet and outlet joint and the residual water drainage valve (71); the water inlet joint is connected to a three-way valve (37); and the condensed water drainage pipe (7) is also connected to a water storage tank.

10. The heating and cooling device for a reaction tank according to claim 1, characterized in that: The bottom of the reaction tank (1) is also connected to a discharge pipe (6), and the discharge pipe (6) is provided with a discharge main valve (61), a three-way water inductor (63) and a sampling port (64), and one side of the three-way water inductor (63) is connected to a cleaning pipe (5).

Images