Cooling tank cooling system

Abstract

The utility model relates to a cooling system of a cooling tank and belongs to the technical field of chemical production. The circulating liquid inlet is connected with a circulating water feeding main pipe, the circulating liquid return opening is connected with a circulating water return main pipe, a cooling water circulating water feeding branch pipe A and a chilled water circulating water feeding branch pipe B are connected to a cooling tower and a water cooling unit respectively, and the circulating water return main pipe is connected with a cooling water circulating water return branch pipe A and a chilled water circulating water return branch pipe B; a cooling water valve A, a chilled water valve B, a cooling water valve C and a chilled water valve D are respectively mounted on the cooling water circulating water feeding branch pipe A, the chilled water circulating water feeding branch pipe B, the circulating water return main pipe and the cooling water circulating water return branch pipe A. The water chilling unit has the advantages that cooling water and chilled water are switched for cooling, the refrigerating power of the water chilling unit is reduced, electricity is saved, the problem that the water chilling unit is shut down due to faults caused by high recovery temperature of an evaporator is solved, and the operation efficiency of the static settling tank is improved.

Description

Technical Field

[0001] This utility model relates to a cooling tank cooling system, belonging to the field of chemical production technology. Background Technology

[0002] Traditional Chinese medicine preparations are made from Chinese medicinal herbs. The main products include granules and extracts. The main production processes for granules and extracts are: pretreatment of medicinal herbs → extraction → concentration → alcohol precipitation → ethanol recovery → sedimentation → extract collection.

[0003] The sedimentation process is carried out in a sedimentation and cooling tank, where the 85℃-90℃ medicinal solution needs to be cooled to ≤20℃ and left to stand for 12-48 hours to separate the impurities in the solution.

[0004] While traditional settling cooling tanks can cool the pharmaceutical solution, current technology is not comprehensive and has the following drawbacks: 1. Due to the large extraction capacity, approximately 1000 batches are extracted annually, averaging 3-4 batches of pharmaceutical solution to be cooled daily. Using only water-cooled units for cooling, each batch requires 7-8 hours of cooling time, consuming approximately 540 kWh of electricity per batch, which is high. 2. All operations of the settling cooling tanks are manual, involving numerous steps, leaving significant room for automation improvement. 3. Using only water-cooled units for cooling leads to chiller unit malfunctions and shutdowns due to high evaporator recovery temperatures.

[0005] To solve one of the above problems, a cooling tank cooling system is urgently needed. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to achieve switching between cooling water and chilled water for cooling, reduce the cooling power of the chiller unit, save electricity, solve the problem of chiller unit failure and shutdown due to high evaporator recovery temperature, and improve the operating efficiency of the settling tank. To this end, a cooling tank cooling system is provided.

[0007] The cooling tank cooling system of this utility model includes a sedimentation cooling tank with a cooling water jacket. An inlet pipe is connected to the liquid inlet of the sedimentation cooling tank, and an inlet ball valve is installed on the inlet pipe. The bottom of the cooling water jacket has a circulation inlet, and the upper part of the cooling water jacket has a circulation return outlet. The system is characterized by: a main circulation water supply pipe connected to the circulation inlet, a main circulation return pipe connected to the circulation return outlet, and a cooling water circulation supply branch pipe A connected to the main circulation supply pipe, and a chilled water circulation supply branch pipe. Branch pipe B, the cooling water circulation supply branch pipe A and the chilled water circulation supply branch pipe B are respectively connected to the cooling tower and the water-cooled unit. The circulating return water main pipe is connected to the cooling water circulation return water branch pipe A and the chilled water circulation return water branch pipe B. The cooling water circulation supply branch pipe A, the chilled water circulation supply branch pipe B, the circulating return water main pipe, and the cooling water circulation return water branch pipe A are respectively equipped with cooling water valve A, chilled water valve B, cooling water valve C and chilled water valve D. The sedimentation cooling tank has a temperature sensor to detect the temperature of the liquid medicine.

[0008] The cooling water circulation branch pipe A and the chilled water circulation branch pipe B are respectively connected to the closed cooling tower and the water-cooled unit. The cooling water is supplied by the closed cooling tower and the chilled water is supplied by the water-cooled unit. The use of switching between cooling water and chilled water for cooling reduces the cooling power of the chiller unit, saves electricity, solves the problem of the chiller unit failing and shutting down due to high evaporator recovery temperature, and improves the operating efficiency of the settling tank.

[0009] The specific process is as follows: Open the inlet ball valve and inject the high-temperature liquid medicine to be cooled into the sedimentation cooling tank through the inlet pipe. Cooling water valve A, chilled water valve B, cooling water valve C, and chilled water valve D are all normally closed. When the temperature sensor detects that the liquid medicine temperature is >40℃, the system automatically opens cooling water valve A and cooling water valve C to inject cooling water into the cooling water jacket and use cooling water to cool the liquid medicine. When the liquid medicine temperature is <40℃, close cooling water valve A and cooling water valve C, and open chilled water valve B and chilled water valve D to inject low-temperature chilled water into the cooling water jacket and use low-temperature chilled water to cool the liquid medicine, reducing the cooling power of the chiller unit and saving electricity. When the temperature sensor detects that the liquid medicine temperature reaches the process requirement value, the system automatically closes chilled water valve B and chilled water valve D.

[0010] Preferably, the cooling water valve A, chilled water valve B, cooling water valve C, and chilled water valve D are all pneumatic butterfly valves.

[0011] Preferably, the sedimentation cooling tank has a stirrer.

[0012] Preferably, the agitator includes a motor installed on the top of the sedimentation cooling tank, the output end of the motor is connected to a rotating shaft extending into the interior of the sedimentation cooling tank, and the rotating shaft is provided with stirring blades adapted to the inner cavity of the sedimentation cooling tank.

[0013] Preferably, the stirring blades are provided in three sets.

[0014] Preferably, a rotating sleeve is rotatably provided in the middle of the rotating shaft, and the rotating sleeve is fixed inside the sedimentation cooling tank by a connecting rod.

[0015] Preferably, the system also includes a controller and a liquid level sensor located in the sedimentation cooling tank. The liquid level sensor and the temperature sensor are electrically connected to the signal input terminal of the controller, and the motor, cooling water valve A, chilled water valve B, cooling water valve C, and chilled water valve D are all electrically connected to the signal output terminal of the controller.

[0016] In practical applications, the cooling system can be started with a single button via the controller. When the operator clicks the "start" button, the liquid inlet valve is automatically opened to allow liquid to enter. The system detects when the liquid level reaches 0.5 meters via the liquid level sensor 4 and the liquid just exceeds the first stirring tooth, at which point the system automatically starts the stirrer.

[0017] The system automatically detects the temperature. When the liquid temperature is >40℃, cooling water is used for cooling, and the temperature can be set and adjusted. When the water temperature is <40℃, the cooling water valve is closed, and the temperature can be set and adjusted. Chilled water cooling is turned on.

[0018] When the temperature inside the tank is detected to be less than 20°C, the temperature can be set and adjusted, and the agitator and chilled water valve will be automatically shut off.

[0019] In winter, when the outdoor temperature is below 10℃, stop using the refrigeration unit and use cooling water as chilled water to reduce energy consumption.

[0020] Preferably, a liquid outlet pipe is installed at the bottom of the sedimentation cooling tank, and a liquid outlet ball valve is installed on the liquid outlet pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The cooling system of the cooling tank described in this utility model uses a closed cooling tower to supply cooling water and a water-cooled unit to supply chilled water. By switching between cooling water and chilled water for cooling, the cooling power of the chiller unit is reduced, electricity is saved, and the problem of chiller unit failure and shutdown due to high evaporator recovery temperature is solved, thereby improving the operating efficiency of the settling tank.

[0023] The cooling tank cooling system described in this utility model solves the problem of chiller units shutting down due to high evaporator recovery temperature.

[0024] The cooling tank cooling system described in this utility model reduces the labor intensity of personnel, achieves automation, provides precise control of static temperature, ensures stable product quality, simplifies operation steps, and eliminates the need to go up and down platforms to open valves, stirrers, or check the liquid level and temperature inside the tank, thus reducing the labor intensity of personnel. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale. Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rotating sleeve.

[0026] In the diagram: 1. Sedimentation cooling tank; 2. Inlet pipe; 3. Inlet ball valve; 4. Liquid level sensor; 5. Temperature sensor; 6. Main circulating water pipe; 7. Cooling water circulating water branch pipe A; 8. Chilled water circulating water branch pipe B; 9. Main circulating return water pipe; 10. Cooling water circulating return water branch pipe A; 11. Chilled water circulating return water branch pipe B; 12. Cooling water valve A; 13. Chilled water valve B; 14. Cooling water valve C; 15. Chilled water valve D; 16. Agitator; 17. Outlet pipe; 18. Outlet ball valve; 19. Rotating sleeve; 20. Connecting rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0028] Example 1, such as Figure 1-2As shown, the cooling tank cooling system includes a sedimentation cooling tank 1 with a cooling water jacket. An inlet pipe 2 is connected to the inlet of the sedimentation cooling tank 1, and an inlet ball valve 3 is installed on the inlet pipe 2. The bottom of the cooling water jacket has a circulation inlet, and the upper part of the cooling water jacket has a circulation return outlet. A circulation inlet main pipe 6 is connected to the circulation inlet, and a circulation return outlet main pipe 9 is connected to the circulation return outlet. The system also includes a cooling water circulation inlet branch pipe A7 and a chilled water circulation inlet branch pipe B8 connected to the circulation inlet main pipe 6. The cooling water circulation... The circulating water supply branch pipe A7 and the chilled water circulation supply branch pipe B8 are respectively connected to the cooling tower and the water-cooled unit. The circulating return water main pipe 9 is connected to the cooling water circulation return water branch pipe A10 and the chilled water circulation return water branch pipe B11. The cooling water circulation supply water branch pipe A7, the chilled water circulation supply water branch pipe B8, the circulating return water main pipe 9, and the cooling water circulation return water branch pipe A10 are respectively equipped with cooling water valve A12, chilled water valve B13, cooling water valve C14 and chilled water valve D15. The sedimentation cooling tank 1 has a temperature sensor 5 for detecting the temperature of the liquid medicine.

[0029] The cooling water circulation branch pipe A7 and the chilled water circulation branch pipe B8 are respectively connected to the closed cooling tower and the water-cooled unit. The cooling water is supplied by the closed cooling tower and the chilled water is supplied by the water-cooled unit. The cooling water and chilled water are switched for cooling, which reduces the cooling power of the chiller unit, saves electricity, solves the problem of the chiller unit failing and shutting down due to high evaporator recovery temperature, and improves the operating efficiency of the settling tank.

[0030] The specific process is as follows: Open the inlet ball valve 3 and inject the high-temperature liquid medicine to be cooled into the sedimentation cooling tank 1 through the inlet pipe 2. Cooling water valve A12, chilled water valve B13, cooling water valve C14, and chilled water valve D15 are all normally closed. When the temperature sensor 5 detects that the liquid medicine temperature is >40℃, the system automatically opens the cooling water valve A12 and the cooling water valve C14 to inject cooling water into the cooling water jacket and use the cooling water to cool the liquid medicine. When the liquid medicine temperature is <40℃, close the cooling water valve A12 and the cooling water valve C14, open the chilled water valve B13 and the chilled water valve D15 to inject low-temperature chilled water into the cooling water jacket and use the low-temperature chilled water to cool the liquid medicine, which reduces the cooling power of the chiller unit and saves electricity. When the temperature sensor 5 detects that the liquid medicine temperature reaches the process requirement value, the system automatically closes the chilled water valve B13 and the chilled water valve D15.

[0031] Example 2, as Figure 1-2As shown, the cooling tank cooling system includes a sedimentation cooling tank 1 with a cooling water jacket. An inlet pipe 2 is connected to the inlet of the sedimentation cooling tank 1, and an inlet ball valve 3 is installed on the inlet pipe 2. The bottom of the cooling water jacket has a circulation inlet, and the upper part of the cooling water jacket has a circulation return outlet. A circulation inlet main pipe 6 is connected to the circulation inlet, and a circulation return outlet main pipe 9 is connected to the circulation return outlet. The system also includes a cooling water circulation inlet branch pipe A7 and a chilled water circulation inlet branch pipe B8 connected to the circulation inlet main pipe 6. The cooling water circulation... The circulating water supply branch pipe A7 and the chilled water circulation supply branch pipe B8 are respectively connected to the cooling tower and the water-cooled unit. The circulating return water main pipe 9 is connected to the cooling water circulation return water branch pipe A10 and the chilled water circulation return water branch pipe B11. The cooling water circulation supply water branch pipe A7, the chilled water circulation supply water branch pipe B8, the circulating return water main pipe 9, and the cooling water circulation return water branch pipe A10 are respectively equipped with cooling water valve A12, chilled water valve B13, cooling water valve C14 and chilled water valve D15. The sedimentation cooling tank 1 has a temperature sensor 5 for detecting the temperature of the liquid medicine.

[0032] Furthermore, the cooling water valve A12, chilled water valve B13, cooling water valve C14, and chilled water valve D15 are all pneumatic butterfly valves.

[0033] Furthermore, the sedimentation cooling tank 1 has a stirrer 16.

[0034] Furthermore, the stirrer 16 includes a motor installed on the top of the sedimentation cooling tank 1, the output end of the motor is connected to a rotating shaft that extends into the interior of the sedimentation cooling tank 1, and the rotating shaft is provided with stirring blades adapted to the inner cavity of the sedimentation cooling tank 1.

[0035] Furthermore, the stirring blades are provided in three sets.

[0036] Furthermore, a rotating sleeve 19 is rotatably provided in the middle of the rotating shaft, and the rotating sleeve 19 is fixed inside the sedimentation cooling tank 1 by a connecting rod 20.

[0037] Furthermore, it also includes a controller and a liquid level sensor 4 located in the sedimentation cooling tank 1. The liquid level sensor 4 and the temperature sensor 5 are both electrically connected to the signal input terminal of the controller. The motor, cooling water valve A12, chilled water valve B13, cooling water valve C14, and chilled water valve D15 are all electrically connected to the signal output terminal of the controller.

[0038] Furthermore, the controller is a PLC, DCS controller, or microcontroller.

[0039] In this embodiment, the modification of the prior art by this specific implementation lies in the hardware part, and the computer program involved is a simple program whose functions can be easily implemented by those skilled in the art using existing computer program development platforms and well-known programming methods.

[0040] In this article, the pneumatic butterfly valve, liquid level sensor 4, temperature sensor 5 and controller are only used in a simple way, and no improvement is involved in the method or procedure.

[0041] This application enables one-button start-up of cooling via a controller. After the operator clicks the "start" button, the liquid inlet valve automatically opens to allow liquid to enter. When the liquid level reaches 0.5 meters via the liquid level sensor 4, the liquid just exceeds the first stirring tooth, and the system automatically starts the stirrer.

[0042] The system automatically detects the temperature. When the liquid temperature is >40℃, cooling water is used for cooling, and the temperature can be set and adjusted. When the water temperature is <40℃, the cooling water valve is closed, and the temperature can be set and adjusted. Chilled water cooling is turned on.

[0043] When the temperature inside the tank is detected to be less than 20°C, the temperature can be set and adjusted, and the agitator and chilled water valve will be automatically shut off.

[0044] In winter, when the outdoor temperature is below 10℃, stop using the refrigeration unit and use cooling water as chilled water to reduce energy consumption.

[0045] Furthermore, a liquid outlet pipe 17 is installed at the bottom of the sedimentation cooling tank 1, and a liquid outlet ball valve 18 is installed on the liquid outlet pipe 17.

[0046] The cooling system of the cooling tank described in this utility model uses a closed cooling tower to supply cooling water and a water-cooled unit to supply chilled water. By switching between cooling water and chilled water for cooling, the cooling power of the chiller unit is reduced, electricity is saved, and the problem of chiller unit failure and shutdown due to high evaporator recovery temperature is solved, thereby improving the operating efficiency of the settling tank.

[0047] The cooling tank cooling system described in this utility model solves the problem of chiller units shutting down due to high evaporator recovery temperature.

[0048] The cooling tank cooling system described in this utility model reduces the labor intensity of personnel, achieves automation, provides precise control of static temperature, ensures stable product quality, simplifies operation steps, and eliminates the need to go up and down platforms to open valves, stirrers, or check the liquid level and temperature inside the tank, thus reducing the labor intensity of personnel.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0050] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A cooling tank cooling system, comprising a sedimentation cooling tank with a cooling water jacket, wherein an inlet pipe is connected to the inlet of the sedimentation cooling tank, an inlet ball valve is installed on the inlet pipe, a circulation inlet is provided at the bottom of the cooling water jacket, and a circulation return inlet is provided at the top of the cooling water jacket, characterized in that: The circulating inlet is connected to a circulating water main pipe, and the circulating return outlet is connected to a circulating return water main pipe. It also includes a cooling water circulating water branch pipe A and a chilled water circulating water branch pipe B connected to the circulating water main pipe. The cooling water circulating water branch pipe A and the chilled water circulating water branch pipe B are respectively connected to a cooling tower and a water-cooled unit. The circulating return water main pipe is connected to the cooling water circulating return water branch pipe A and the chilled water circulating return water branch pipe B. Cooling water valve A, chilled water valve B, cooling water valve C, and chilled water valve D are respectively installed on the cooling water circulating water branch pipe A, the chilled water circulating water branch pipe B, the circulating return water main pipe, and the cooling water circulating return water branch pipe A. The sedimentation cooling tank contains a temperature sensor for detecting the temperature of the liquid.

2. The cooling tank cooling system according to claim 1, characterized in that, The cooling water valve A, chilled water valve B, cooling water valve C, and chilled water valve D are all pneumatic butterfly valves.

3. The cooling tank cooling system according to claim 2, characterized in that, The sedimentation cooling tank is equipped with a stirrer.

4. The cooling tank cooling system according to claim 3, characterized in that, The agitator includes a motor installed on the top of the sedimentation cooling tank. The output end of the motor is connected to a rotating shaft that extends into the interior of the sedimentation cooling tank. The rotating shaft is equipped with stirring blades that are adapted to the inner cavity of the sedimentation cooling tank.

5. The cooling tank cooling system according to claim 4, characterized in that, The stirring blades are provided in three sets.

6. The cooling tank cooling system according to claim 4, characterized in that, A rotating sleeve is rotatably mounted in the middle of the rotating shaft, and the rotating sleeve is fixed inside the sedimentation cooling tank by a connecting rod.

7. The cooling tank cooling system according to claim 5 or 6, characterized in that, It also includes a controller and a liquid level sensor located in the sedimentation and cooling tank. The liquid level sensor and temperature sensor are electrically connected to the signal input terminal of the controller. The motor, cooling water valve A, chilled water valve B, cooling water valve C, and chilled water valve D are all electrically connected to the signal output terminal of the controller.

8. The cooling tank cooling system according to claim 7, characterized in that, The bottom of the sedimentation cooling tank is equipped with a liquid outlet pipe, and a liquid outlet ball valve is installed on the liquid outlet pipe.

Images