Water chilling unit circulating system

Abstract

The utility model relates to a circulating system of a water chilling unit and belongs to the technical field of medicine production. Comprising a buffer tank, a water-cooled cooling-water machine and a jacket stirring tank with a cooling jacket, a water inlet B of the buffer tank is connected with a tank body drainage pipe, the other end of the tank body drainage pipe is connected to a water outlet A of the cooling jacket, and a water outlet B of the buffer tank is connected with a cooling-water machine water return pipe. The other end of the water cooling machine water return pipe is connected to a chilled water return port of the water cooling type water cooling machine, a chilled water outlet of the water cooling type water cooling machine is connected with a tank body water supply pipe, the other end of the tank body water supply pipe is connected to a water inlet A of the cooling jacket, and a main circulating pump set is installed on the water cooling machine water return pipe. The pipeline system has the advantages that the buffer tank is arranged on the pipeline in front of the chilled water pump in the pipeline system of the circulating system of the water chilling unit, the buffer tank is provided with the emptying pipe, air is exhausted through the emptying pipe, and the problem that the air of the circulating system of the water chilling unit cannot be exhausted in time to cause cutoff is solved.

Description

A chiller unit circulation system Technical Field

[0001] This utility model relates to a chiller unit circulation system and belongs to the field of traditional Chinese medicine manufacturing technology. Background Technology

[0002] In the manufacturing process of traditional Chinese medicine, the design of the cooling system of the mixing tank is crucial to ensuring the quality of the medicinal solution and production efficiency. The outer wall of the mixing tank is designed with a cooling jacket, which, together with the chiller unit and the circulating pump unit, forms a closed-loop system.

[0003] A search revealed a utility model patent with patent number 202420807894.4, which discloses a stirring device for extracting traditional Chinese medicine liquid. The device includes a vertically arranged stirring tank with a space inside for mixing the traditional Chinese medicine liquid and the extract. A feed pipe is connected to the top of the stirring tank, and a discharge pipe is connected to the bottom. At least three support legs are also connected to the bottom of the stirring tank. A first stirring mechanism is connected to the bottom of the stirring tank, tilted upwards with its front end located inside the stirring tank. A second stirring mechanism is connected to one side of the middle of the stirring tank, tilted downwards with its front end also located inside the stirring tank. A cooling mechanism surrounds and is connected to the outer wall of the stirring tank, with a channel inside the cooling mechanism for the passage of cooling liquid.

[0004] While the aforementioned patent can achieve the function of cooling traditional Chinese medicine liquids, the current technology is not comprehensive and has the following drawbacks: 1. In the alcohol precipitation workshop, the alcohol precipitation tank and ethanol distillation tower use low-temperature water from chillers to cool the liquids. During the operation of the chillers, air can enter the system during equipment and valve switching. The mechanical automatic air vent valve installed at the highest point of the pipeline by the manufacturer has poor venting effect, frequently causing refrigerant flow interruption in the evaporator. When a fault occurs, the chiller will shut down and require manual reset. Each shutdown and restart takes 15-20 minutes to troubleshoot, affecting equipment operating efficiency and increasing labor hours. 2. In winter, the chiller is prone to oil leakage, reduced cooling capacity, and unstable low-load operation, affecting production efficiency and increasing energy waste.

[0005] To solve one of the above problems, a chiller unit circulation system is urgently needed. Summary of the Invention

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to solve the problem of air not being discharged in time in the chiller system, which leads to flow interruption, and how to use a condenser with a cooling tower for cooling in winter instead of using the chiller, thereby saving electricity and reducing the impact on production caused by chiller failure. To this end, a chiller circulation system is provided.

[0007] The chiller unit circulation system of this utility model includes a buffer tank, a water-cooled chiller, and a jacketed mixing tank with a cooling jacket. Chilled water can enter the cooling jacket from the inlet A and exit from the outlet A. The system is characterized in that: the inlet B of the buffer tank is connected to the tank body drain pipe, the other end of the tank body drain pipe is connected to the outlet A of the cooling jacket, the outlet B of the buffer tank is connected to a chiller return water pipe, the other end of the chiller return water pipe is connected to the chilled water return port of the water-cooled chiller, the chilled water outlet of the water-cooled chiller is connected to a tank body water supply pipe, the other end of the tank body water supply pipe is connected to the inlet A of the cooling jacket, and a main circulation pump is installed on the chiller return water pipe.

[0008] A buffer tank is installed in the piping before the chilled water pump in the chiller unit's circulating system. After the chilled water is cooled by the equipment, it first enters the buffer tank and then enters the evaporator of the chiller unit's circulating system via the pump. The buffer tank is equipped with an vent pipe, through which air is discharged, thus solving the problem of flow interruption caused by the inability to remove air from the chiller unit's circulating system in a timely manner.

[0009] Preferably, the buffer tank includes a tank body, an inlet B, a water supply pipe and an outlet pipe are installed on the upper part of the tank body, the outlet pipe is connected to the upper part of the tank body and is in communication with the outside air of the tank body, a float valve for controlling the on / off of the pipeline is installed on the water supply pipe inside the tank body, the water supply pipe is connected to a tap water pipe, and an outlet B is installed at the bottom of the tank body.

[0010] The buffer tank is equipped with a float inlet valve. When water loss occurs due to chilled water or equipment switching, water is automatically replenished into the tank through the float valve, thus realizing automatic water replenishment of the chilled water system of the chiller unit circulation system.

[0011] Preferably, an electrically controlled valve A is installed on the tank drain pipe connected to the water inlet B.

[0012] Preferably, the main circulation pump set includes a first circulation pump connected in series on the chiller return water pipe, and a second circulation pump connected in parallel with the first circulation pump. The inlet of the second circulation pump is connected to the inlet of the first circulation pump through a branch pipe A, and the outlet of the second circulation pump is connected to the outlet of the first circulation pump through a branch pipe B. An electrically controlled valve B is installed on the pipes connected to the inlets of the first circulation pump and the second circulation pump.

[0013] Preferably, the water-cooled chiller includes an evaporator and a condenser. The evaporator has a chilled water return port and a chilled water outlet, and the condenser has a cooling water return port and a cooling water outlet. The cooling water return port is connected to the outlet of the cooling tower via a second circulation pipe, and the cooling water outlet is connected to the inlet of the cooling tower via a first circulation pipe. A secondary circulation pump is installed on the second circulation pipe, and a first control valve is installed on the chiller return pipe connected to the chilled water return port. The tank connected to the chilled water outlet... A second control valve is installed on the water supply pipe, a third control valve is installed on the first circulation pipe connected to the cooling water outlet, and a fourth control valve is installed on the second circulation pipe connected to the cooling water return outlet. It also includes a bypass pipe A and a bypass pipe B. The two ends of the bypass pipe A are respectively connected to the outlets of the first control valve and the third control valve, and the two ends of the bypass pipe B are respectively connected to the inlet ends of the second control valve and the fourth control valve. A fifth control valve and a sixth control valve are respectively installed on the bypass pipe A and the bypass pipe B.

[0014] During summer use, the fifth and sixth control valves need to be closed, and the first, second, third, and fourth control valves need to be opened. The evaporator and condenser work normally. The circulating water enters the water-cooled chiller through the chiller return pipe to cool down and form chilled water. Then it flows out through the tank supply pipe. After the auxiliary circulation pump group is turned on, water circulation is formed between the condenser and the cooling tower.

[0015] In winter, the first, second, third, and fourth control valves are closed, while the fifth and sixth control valves are opened. At this time, the evaporator and condenser of the water-cooled chiller do not work, and the circulating water only flows through the cooling tower for cooling, no longer flowing through the evaporator inside the water-cooled chiller. The main circulation pump group or the auxiliary circulation pump group does not need to work at the same time. In winter, the cooling tower can be used to replace the chiller unit's circulating system for cooling.

[0016] In winter, instead of using the chiller circulation system for cooling, a condenser-equipped cooling tower is used to save electricity and reduce the impact on production caused by chiller circulation system failures.

[0017] Preferably, the cooling tower is a closed-loop cooling tower.

[0018] Preferably, the auxiliary circulation pump set has the same structure as the main circulation pump set.

[0019] Preferably, multiple sets of jacketed mixing tanks share a single water-cooled chiller. The two workshops are connected by a connecting pipe to share the chiller's circulation system, saving electricity and reducing production disruptions caused by chiller circulation system malfunctions.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The chiller circulation system described in this utility model includes a buffer tank installed in the pipeline before the chilled water pump in the chiller circulation system pipeline system. After the chilled water is cooled from the equipment, the return water first enters the buffer tank, and then enters the evaporator of the chiller circulation system through the pump. The buffer tank is equipped with an vent pipe, through which air is discharged, thus solving the problem of flow interruption caused by the inability to discharge air in the chiller circulation system in a timely manner.

[0022] The chiller unit circulation system described in this utility model is equipped with a float inlet valve for the buffer tank. When water loss occurs due to chilled water or equipment switching, water is automatically replenished to the tank through the float valve, thereby realizing automatic water replenishment of the chiller unit circulation system.

[0023] The chiller circulation system described in this utility model does not require cooling in winter; instead, a cooling tower is used in conjunction with a condenser, saving electricity and reducing the impact on production due to chiller circulation system failures.

[0024] The chiller unit circulation system described in this utility model allows two workshops to share the chiller unit circulation system via a connecting pipe, saving electricity and reducing the impact on production due to chiller unit circulation system failures. 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.

[0026] Figure 1 is a schematic diagram of the structure of this utility model;

[0027] Figure 2 is a schematic diagram of the internal structure of the water-cooled chiller of this utility model;

[0028] Figure 3 is a structural diagram of the buffer tank.

[0029] In the diagram: 1. Jacketed mixing tank; 2. Buffer tank; 2.1. Inlet B; 2.2. Water supply pipe; 2.3. Float valve; 2.4. Drain pipe; 2.5. Outlet B; 3. Water-cooled chiller; 4. Cooling tower; 5. Main circulation pump set; 6. Secondary circulation pump set; 7. Tank water supply pipe; 8. Tank drain pipe; 9. Chiller return pipe; 10. First circulation pipe; 11. Second circulation pipe; 12. First control valve; 13. Second control valve; 14. Third control valve; 15. Fourth control valve; 16. Bypass pipe A; 17. Bypass pipe B; 18. Fifth control valve; 19. Sixth control valve. Detailed Implementation

[0030] 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.

[0031] Example 1, as shown in Figures 1-2, describes a chiller unit circulation system including a buffer tank 2, a water-cooled chiller 3, and a jacketed mixing tank 1 with a cooling jacket. Chilled water enters the cooling jacket from the inlet A and exits from the outlet A. The inlet B2.1 of the buffer tank 2 is connected to the tank drain pipe 8, and the other end of the tank drain pipe 8 is connected to the outlet A of the cooling jacket. The outlet B2.5 of the buffer tank 2 is connected to a chiller return water pipe 9, and the other end of the chiller return water pipe 9 is connected to the chilled water return port of the water-cooled chiller 3. The chilled water outlet of the water-cooled chiller 3 is connected to a tank supply water pipe 7, and the other end of the tank supply water pipe 7 is connected to the inlet A of the cooling jacket. A main circulation pump set 5 is installed on the chiller return water pipe 9.

[0032] A 2m³ buffer tank is installed in the piping before the chilled water pump in the chilled water circulation system of the chiller unit. After the chilled water is cooled by the equipment, it first enters the buffer tank and then enters the evaporator of the chiller unit circulation system through the pump. The buffer tank is equipped with an air vent pipe, through which air is discharged, which solves the problem of the chiller unit circulation system not being able to discharge air in time, which can cause the flow to stop.

[0033] In winter, instead of using chiller units for cooling, condensers with cooling towers are used to save electricity and reduce production disruptions caused by chiller unit malfunctions.

[0034] Example 2, as shown in Figures 1-2, describes a chiller unit circulation system including a buffer tank 2, a water-cooled chiller 3, and a jacketed mixing tank 1 with a cooling jacket. Chilled water enters the cooling jacket from the inlet A and exits from the outlet A. The inlet B2.1 of the buffer tank 2 is connected to the tank drain pipe 8, and the other end of the tank drain pipe 8 is connected to the outlet A of the cooling jacket. The outlet B2.5 of the buffer tank 2 is connected to a chiller return water pipe 9, and the other end of the chiller return water pipe 9 is connected to the chilled water return port of the water-cooled chiller 3. The chilled water outlet of the water-cooled chiller 3 is connected to a tank supply water pipe 7, and the other end of the tank supply water pipe 7 is connected to the inlet A of the cooling jacket. A main circulation pump set 5 is installed on the chiller return water pipe 9.

[0035] Further, referring to Figure 3, the buffer tank 2 includes a tank body. The upper part of the tank body is equipped with a water inlet B2.1, a water supply pipe 2.2, and an empty pipe 2.4. The empty pipe 2.4 connects to the upper part of the tank body and is in communication with the outside air. The water supply pipe 2.2 inside the tank body is equipped with a float valve 2.3 to control the on / off of the pipeline. The water supply pipe 2.2 is connected to a tap water pipe. The bottom of the tank body is equipped with a water outlet B2.5.

[0036] The buffer tank is equipped with a float inlet valve. When water loss occurs due to chilled water or equipment switching, water is automatically replenished into the tank through the float valve, thus realizing automatic water replenishment of the chilled water system of the chiller unit circulation system.

[0037] Furthermore, an electrically controlled valve A is installed on the tank drain pipe 8 connected to the water inlet B2.1.

[0038] Furthermore, the main circulation pump set 5 includes a first circulation pump connected in series on the chiller return water pipe 9, and a second circulation pump connected in parallel with the first circulation pump. The inlet of the second circulation pump is connected to the inlet of the first circulation pump through a branch pipe A, and the outlet of the second circulation pump is connected to the outlet of the first circulation pump through a branch pipe B. An electrically controlled valve B is installed on the pipes connected to the inlets of the first circulation pump and the second circulation pump.

[0039] Furthermore, the water-cooled chiller 3 includes an evaporator and a condenser. The evaporator has a chilled water return port and a chilled water outlet, and the condenser has a cooling water return port and a cooling water outlet. The cooling water return port is connected to the outlet of the cooling tower 4 via a second circulation pipe 11, and the cooling water outlet is connected to the inlet of the cooling tower 4 via a first circulation pipe 10. A secondary circulation pump set 6 is installed on the second circulation pipe. A first control valve 12 is installed on the chiller return pipe 9 connected to the chilled water return port, and a second control valve 12 is installed on the tank water supply pipe 7 connected to the chilled water outlet. The system includes a control valve 13, a third control valve 14 installed on a first circulation pipe 10 connected to the cooling water outlet, a fourth control valve 15 installed on a second circulation pipe 11 connected to the cooling water return outlet, a bypass pipe A16 and a bypass pipe B17, the two ends of the bypass pipe A16 being connected to the outlets of the first control valve 12 and the third control valve 14 respectively, the two ends of the bypass pipe B17 being connected to the inlet ends of the second control valve 13 and the fourth control valve 15 respectively, and a fifth control valve 18 and a sixth control valve 19 installed on the bypass pipe A16 and the bypass pipe B17 respectively.

[0040] During summer use, the fifth control valve 18 and the sixth control valve 19 need to be closed, and the first control valve 12, the second control valve 13, the third control valve 14, and the fourth control valve 15 need to be opened. The evaporator and condenser work normally. The circulating water enters the water-cooled chiller 3 through the chiller return pipe 9 to cool down and form chilled water. Then it flows out through the tank water supply pipe 7. After the auxiliary circulation pump group 6 is turned on, water circulation is formed between the condenser and the cooling tower 4.

[0041] In winter, the first control valve 12, the second control valve 13, the third control valve 14 and the fourth control valve 15 are closed, and the fifth control valve 18 and the sixth control valve 19 are opened. At this time, the evaporator and condenser of the water-cooled chiller 3 do not work. The circulating water only flows through the cooling tower 4 for cooling and no longer flows through the evaporator in the water-cooled chiller 3. The main circulation pump group 5 or the auxiliary circulation pump group 6 do not need to work at the same time. In winter, the cooling tower can be used to replace the chiller unit's circulation system for cooling.

[0042] In winter, instead of using the chiller circulation system for cooling, a condenser-equipped cooling tower is used to save electricity and reduce the impact on production caused by chiller circulation system failures.

[0043] Furthermore, the cooling tower 4 is a closed-loop cooling tower.

[0044] Furthermore, the auxiliary circulation pump group 6 has the same structure as the main circulation pump group 5.

[0045] Furthermore, multiple sets of jacketed mixing tanks 1 share a single water-cooled chiller 3.

[0046] The chiller circulation system described in this utility model includes a buffer tank installed in the pipeline before the chilled water pump in the chiller circulation system pipeline system. After the chilled water is cooled from the equipment, the return water first enters the buffer tank, and then enters the evaporator of the chiller circulation system through the pump. The buffer tank is equipped with an vent pipe, through which air is discharged, thus solving the problem of flow interruption caused by the inability to discharge air in the chiller circulation system in a timely manner.

[0047] The chiller unit circulation system described in this utility model is equipped with a float inlet valve for the buffer tank. When water loss occurs due to chilled water or equipment switching, water is automatically replenished to the tank through the float valve, thereby realizing automatic water replenishment of the chiller unit circulation system.

[0048] The chiller circulation system described in this utility model does not require cooling in winter; instead, a cooling tower is used in conjunction with a condenser, saving electricity and reducing the impact on production due to chiller circulation system failures.

[0049] The chiller unit circulation system described in this utility model allows two workshops to share the chiller unit circulation system via a connecting pipe, saving electricity and reducing the impact on production due to chiller unit circulation system failures.

[0050] 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.

[0051] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A chiller unit circulation system, comprising a buffer tank (2), a water-cooled chiller (3), and a jacketed mixing tank (1) with a cooling jacket, wherein chilled water can enter the cooling jacket from the inlet A and be discharged from the outlet A, characterized in that: The inlet B (2.1) of the buffer tank (2) is connected to the tank drain pipe (8), and the other end of the tank drain pipe (8) is connected to the outlet A of the cooling jacket. The outlet B (2.5) of the buffer tank (2) is connected to the chiller return pipe (9), and the other end of the chiller return pipe (9) is connected to the chilled water return port of the water-cooled chiller (3). The chilled water outlet of the water-cooled chiller (3) is connected to the tank supply pipe (7), and the other end of the tank supply pipe (7) is connected to the inlet A of the cooling jacket. The chiller return pipe (9) is equipped with a main circulation pump set (5).

2. The chiller unit circulation system according to claim 1, characterized in that, The buffer tank (2) includes a tank body. The upper part of the tank body is equipped with an inlet B (2.1), a water supply pipe (2.2), and an empty pipe (2.4). The empty pipe (2.4) connects the upper part of the tank body to the outside air. The water supply pipe (2.2) inside the tank body is equipped with a float valve (2.3) to control the opening and closing of the pipeline. The water supply pipe (2.2) is connected to a tap water pipe. The bottom of the tank body is equipped with an outlet B (2.5).

3. The water chiller circulating system according to claim 2, wherein, An electrically controlled valve A is installed on the tank drain pipe (8) connected to the water inlet B (2.1).

4. The water chiller circulating system according to claim 3, wherein, The main circulation pump set (5) includes a first circulation pump connected in series on the chiller return water pipe (9), and a second circulation pump connected in parallel with the first circulation pump. The inlet of the second circulation pump is connected to the inlet of the first circulation pump through a branch pipe A, and the outlet of the second circulation pump is connected to the outlet of the first circulation pump through a branch pipe B. An electrically controlled valve B is installed on the pipes connected to the inlets of the first circulation pump and the second circulation pump.

5. The water chiller circulating system according to claim 4, wherein, The water-cooled chiller (3) has an evaporator and a condenser. The evaporator has a chilled water return port and a chilled water outlet. The condenser has a cooling water return port and a cooling water outlet. The cooling water return port is connected to the outlet of the cooling tower (4) through a second circulation pipe (11). The cooling water outlet is connected to the inlet of the cooling tower (4) through a first circulation pipe (10). A secondary circulation pump group (6) is installed on the second circulation pipe. A first control valve (12) is installed on the chiller return pipe (9) connected to the chilled water return port. A second control valve (13) is installed on the tank water supply pipe (7) connected to the chilled water outlet. A third control valve (14) is installed on the first circulation pipe (10) connected to the water outlet, and a fourth control valve (15) is installed on the second circulation pipe (11) connected to the cooling water return port. It also includes a bypass pipe A (16) and a bypass pipe B (17). The two ends of the bypass pipe A (16) are respectively connected to the outlet of the first control valve (12) and the third control valve (14). The two ends of the bypass pipe B (17) are respectively connected to the inlet of the second control valve (13) and the fourth control valve (15). A fifth control valve (18) and a sixth control valve (19) are respectively installed on the bypass pipe A (16) and the bypass pipe B (17).

6. The water chiller circulating system according to claim 5, wherein, The cooling tower (4) is a closed-loop cooling tower.

7. The chiller unit circulation system according to claim 6, characterized in that, The auxiliary circulation pump group (6) has the same structure as the main circulation pump group (5).

8. The chiller unit circulation system according to claim 7, characterized in that, Multiple jacketed mixing tanks (1) share a set of water-cooled chillers (3).

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