Cooling water device with temperature control precision of + / -0.05 DEG C for laboratory and control method

Abstract

The invention discloses a laboratory cooling water device with the temperature control precision of + / -0.05 DEG C and a control method, and relates to the technical field of laboratory cooling water outlet devices. The laboratory cooling water device comprises a water tank, a machine shell is fixedly arranged on the left side of the top of the water tank, and a first driving mechanism is arranged on the top of an inner cavity of the machine shell; a cooling pushing mechanism is arranged at the bottom end of the first driving mechanism, a second driving mechanism is arranged on the outer side of the first driving mechanism, a mixing mechanism is rotatably arranged at the bottom of an inner cavity of the machine shell, a sealing drainage mechanism is arranged on the left side of the top of the mixing mechanism, and a water return mechanism is arranged at the bottom of the machine shell; the water return mechanism is located in the water tank. By means of a large-flow cooling water output mode, the control difficulty of the water temperature in the water tank is lowered, meanwhile, the fluctuation frequency of the water temperature in the water tank is effectively reduced, meanwhile, the temperature difference between returned water and cooling water in the water tank is further reduced, the control difficulty of the cooling water temperature is lowered, and the stability of a cooling system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cooling water outlet devices for laboratories, and in particular to a cooling water outlet device with a temperature control accuracy of ±0.05°C for laboratories and a control method thereof. Background Art

[0002] During the operation of laboratory equipment, most of the electrical energy it consumes will be converted into heat energy, which will cause the temperature of the equipment to rise. In order to ensure its operational stability, cooling water is needed to remove the heat during its operation.

[0003] The invention patent with application publication number CN110580067A discloses a high-precision constant temperature water outlet device for laboratory use and a water temperature regulation method thereof, including a water outlet device and a water temperature regulation method. The water outlet device includes a water pump, a plate heat exchanger, a heating component, a proportional three-way converging valve component and a load temperature regulation component.

[0004] However, after actual application by technicians in this field, it was found that the above-mentioned water outlet device and water temperature regulation method still have some shortcomings. The most obvious one is that the cooling water in the above-mentioned device will be returned to the water tank through the return pipe for recycling after cooling down multiple laboratory equipment. Since the cooling water will heat up after completing the heat exchange of the laboratory equipment, there will be an obvious temperature difference between the cooling water in the return pipe and the remaining water in the water tank. When it is directly returned to the inside of the water tank, the difficulty of controlling the water temperature inside the water tank will be significantly increased due to the large temperature difference between the two water temperatures.

[0005] In view of the above situation, technicians in this field thought of using a large flow of cooling water for output, that is, if the actual cooling water consumption is k, at least 2k of cooling water will be output, of which a small part of the cooling water is used to cool multiple laboratory equipment, and the remaining majority of the cooling water is waiting to be mixed with the small part of the cooling water that has completed the cooling operation, so as to reduce the temperature difference between the returned cooling water and the cooling water in the water tank.

[0006] However, after research, technical personnel in this field found that although the method of outputting cooling water at a large flow rate reduces the temperature difference and reduces the difficulty of controlling the water temperature in the water tank, due to the different transmission distances between each laboratory equipment and the main return water pipeline in actual application, during actual return, cooling water of different temperatures in each laboratory equipment will be returned to the main return water pipeline in turn. At this time, when the cooling water in the main return water pipeline returns to the water tank, the temperature of the water in the water tank will fluctuate continuously and irregularly in a small range, which will cause the subsequent plate heat exchanger and heating component to also need to continuously adjust the water temperature, which will also increase the difficulty of controlling the cooling water temperature, and the system stability is poor in actual application.

[0007] Therefore, it is necessary to invent a cooling water device and a control method with a temperature control accuracy of ±0.05°C for use in laboratories to solve the above problems. Summary of the invention

[0008] The object of the present invention is to provide a cooling water device with a temperature control accuracy of ±0.05°C for laboratory use and a control method thereof. The device is provided with a first driving mechanism, a cooling pushing mechanism, a second driving mechanism, a mixing mechanism, a sealing drainage mechanism and a water return mechanism, so that after the first driving mechanism is started, the cooling pushing mechanism and the second driving mechanism are driven to move downward synchronously, and the cooling pushing mechanism is driven to rotate continuously. During the rotation and descent of the cooling pushing mechanism, the cooling water inside the adjacent water storage cylinder in the mixing mechanism is mixed and cooled, and then the sealing drainage mechanism is triggered, so that the mixed and cooled cooling water is stably returned to the water tank. During the descent of the second driving mechanism, the mixing mechanism is not affected by the overrunning clutch until the second driving mechanism contacts the sealing drainage mechanism. Subsequently, as the first driving mechanism drives the cooling pushing mechanism and the second driving mechanism to move upward and reset continuously, the second driving mechanism drives the mixing mechanism to The water storage cylinders in the mixing mechanism are moved, thereby completing the position exchange, and then the emptied water storage cylinder is moved to the bottom of the return water mechanism to receive the two cooling waters, and the water storage cylinders filled with the two cooling waters are moved to the bottom of the cooling and pushing mechanism to wait for mixing and cooling, so as to solve the problem that although the large-flow output cooling water method proposed in the above background technology reduces the temperature difference and reduces the difficulty of controlling the water temperature in the water tank, due to the different transmission distances between each laboratory equipment and the total return water pipeline in actual application, during actual return, the cooling water of different temperatures in each laboratory equipment will be returned to the total return water pipeline in turn. At this time, after the cooling water in the total return water pipeline returns to the water tank, the temperature of the water in the water tank will fluctuate continuously and irregularly in a small range, which will cause the subsequent plate heat exchanger and heating component to also need to continuously adjust the water temperature, which will also increase the difficulty of controlling the cooling water temperature and the problem of poor system stability in actual application.

[0009] To achieve the above object, the present invention provides the following technical solution: a cooling water device with a temperature control accuracy of ±0.05°C for laboratory use, comprising a water tank, a housing fixedly arranged on the left side of the top of the water tank, a first driving mechanism arranged on the top of the inner cavity of the housing, a cooling pushing mechanism arranged at the bottom of the first driving mechanism and a second driving mechanism arranged outside the first driving mechanism, a mixing mechanism rotatably arranged at the bottom of the inner cavity of the housing, a sealing drainage mechanism arranged on the left side of the top of the mixing mechanism, a water return mechanism arranged at the bottom of the housing, and the water return mechanism located inside the water tank; The cooling and pushing mechanism comprises a rotating disk, a square shaft, a pushing rod and a columnar refrigerator; The rotating disk is rotatably sleeved at the outer bottom end of the inner sleeve through a bearing, the square shaft is slidably nested in the bottom end of the reciprocating screw along the vertical direction and is fixedly connected to the rotating disk, the push rod is rotatably nested at the bottom center of the rotating disk through a bearing, and a plurality of columnar refrigerators are provided, and the plurality of columnar refrigerators are evenly and fixedly arranged on the outer side of the bottom of the rotating disk.

[0010] Preferably, the first driving mechanism comprises a reciprocating screw, a driving motor, an outer sleeve, a first spring and an inner sleeve; The reciprocating screw penetrates the casing and is rotatably connected to the casing through a bearing. The driving motor is fixedly arranged on the top of the casing and is transmission-connected to the reciprocating screw. The outer sleeve, the first spring and the inner sleeve are sequentially sleeved on the outside of the reciprocating screw from top to bottom. The outer sleeve is transmission-connected to the reciprocating screw. The first spring is fixedly connected between the outer sleeve and the inner sleeve. The inner sleeve is slidably connected to the reciprocating screw and is slidably arranged on the inside of the outer sleeve.

[0011] Preferably, the second driving mechanism comprises an outer sleeve plate, a connecting shaft, a one-way screw, a second spring and a first magnet; The outer sleeve plate is fixedly sleeved on the outer bottom end of the outer sleeve, the connecting shaft is fixedly set on the left side of the bottom of the outer sleeve plate, the one-way screw is slidably nested along the vertical direction on the outside of the connecting shaft, the second spring is fixedly connected between the connecting shaft and the one-way screw, and the first magnet is fixedly set on the bottom end of the one-way screw.

[0012] Preferably, the mixing mechanism comprises a lower rotating seat, a water storage cylinder, an upper rotating seat and a threaded collar; The lower rotating seat is rotatably nested in the casing through a bearing, two water storage cylinders are provided, and the two water storage cylinders are fixedly nested on both sides of the top of the lower rotating seat respectively, and the upper rotating seat is fixedly sleeved on the outer top of the two lower rotating seats, and the threaded ring is connected to the inner side of the upper rotating seat through an overrunning clutch transmission, and the threaded ring is sleeved on the outer side of the one-way screw and is threadedly connected to the one-way screw.

[0013] Preferably, the sealing drainage mechanism comprises a drainage channel, a U-shaped frame, a second magnet, a third spring and a sealing plate; The drainage channel is arranged through the right side of the bottom of the casing, the U-shaped frame is fixedly arranged at the bottom of the casing, the second magnet is fixedly arranged on the inner side of the U-shaped frame and is located directly below the first magnet, the third spring is fixedly connected to the right end of the inner side of the U-shaped frame, and the sealing plate is fixedly connected to the top of the third spring and seals the bottom opening of the drainage channel.

[0014] Preferably, the water return mechanism comprises an extension plate, a first transfer shell, a second transfer shell, a used cooling water return pipe and an unused cooling water return pipe; The extension plate is fixedly connected to the inner wall of the casing, the first transfer shell and the second transfer shell are moved from back to front and fixedly penetrated at the top of the extension plate, the used cooling water return pipe is fixedly penetrated at the side of the first transfer shell, and the unused cooling water return pipe is fixedly penetrated at the side of the second transfer shell.

[0015] The present invention also discloses a control method for a cooling water device with a temperature control accuracy of ±0.05°C for use in a laboratory, which is implemented using the above-mentioned cooling water device with a temperature control accuracy of ±0.05°C for use in a laboratory. The method specifically comprises the following steps: S1. When cooling multiple laboratory equipment, the water pump transports the cooling water in the water tank to the plate heat exchanger and the heating assembly for treatment. The treated water is output and mixed under the action of the proportional three-way confluence valve to form at least twice the required amount of cooling water, of which one times the required amount of cooling water flows to multiple laboratory equipment under the action of the diverter valve, thereby cooling the laboratory equipment. The remaining cooling water enters the second transfer shell through the unused cooling water return pipe, and the cooling water that has completed the cooling of the laboratory equipment enters the first transfer shell through the used cooling water return pipe; S2, the cooling water inside the first transfer shell and the second transfer shell falls into the left water storage cylinder from the bottom opening under the action of gravity, and the driving motor is started at the same time. After the driving motor is started, the reciprocating screw is driven to rotate continuously. When the reciprocating screw rotates, the cooling pushing mechanism is driven to rotate as a whole through the square shaft. At the same time, the cooling pushing mechanism is driven to descend as a whole through the first spring and the inner sleeve. In addition, when the reciprocating screw rotates, the outer sleeve is driven to descend continuously. When the outer sleeve descends, the second driving mechanism is driven to descend as a whole. During the descent of the second driving mechanism, the one-way screw drives the threaded collar to rotate continuously. At this time, due to the effect of the overrunning clutch, the upper rotating seat does not rotate; S3, when the outer tube descends to a first threshold, the push rod and the columnar refrigerator both enter the right water storage cylinder. If there is cooling water in the right water storage cylinder, the continuously rotating columnar refrigerator mixes and cools the cooling water. S4, when the outer tube descends to the second threshold, the bottom end of the push rod contacts the top of the drainage channel. As the outer tube continues to descend, the push rod drives the sealing plate to continue to descend and compresses the third spring. If there is cooling water in the right water storage cylinder, the cooling water that has been cooled and evenly mixed will continue to enter the water tank through the drainage channel for recirculation. S5, when the outer sleeve descends to a third threshold, the bottom of the rotating disk contacts the top of the right water storage cylinder. At this time, due to the obstruction of the right water storage cylinder, the cooling push mechanism cannot continue to descend. Subsequently, as the outer sleeve continues to descend, the second drive mechanism continues to descend while the first spring is continuously compressed; S6, when the outer sleeve descends to a fourth threshold, the first magnet contacts and adsorbs the second magnet, and the outer sleeve moves to the bottom of the reciprocating thread outside the reciprocating screw. As the reciprocating screw continues to rotate, the outer sleeve moves upward and resets. During the upward movement of the outer sleeve, due to the pulling of the first magnet and the second magnet, the one-way screw does not move upward, and the second spring is continuously stretched. S7, when the outer tube rises to the fifth threshold, the push rod and the multiple columnar coolers are all moved out from the right water storage cylinder, and the downward-moving sealing plate is reset under the push of the third spring. If there is cooling water in the right water storage cylinder, the cooling water will all flow back to the water tank at this time; S8. When the rising distance of the outer sleeve reaches the sixth threshold, the second spring is stretched to the extreme value. Subsequently, as the outer sleeve continues to rise, the one-way screw drives the first magnet to detach from the top of the second magnet. At this time, the stretched second spring drives the one-way screw to move up and reset. During the upward movement of the one-way screw, the threaded collar is driven to rotate continuously. At this time, the rotation of the threaded collar drives the upper rotating seat to rotate. When the upper rotating seat rotates, it drives the two water storage cylinders to exchange positions. During the rotation of the upper rotating seat, the top of the upper rotating seat periodically contacts and seals the first transfer shell and the bottom opening of the second transfer shell; S9. When the rising distance of the outer sleeve reaches the seventh threshold, the two water storage cylinders are replaced. At the same time, the outer sleeve moves to the top of the reciprocating thread outside the reciprocating screw. Subsequently, as the reciprocating screw continues to rotate, the outer sleeve moves down again to repeat the above-mentioned cooling, reflux and replacement operations.

[0016] Technical effects and advantages of the present invention:

[0017] The present invention is provided with a first driving mechanism, a cooling pushing mechanism, a second driving mechanism, a mixing mechanism, a sealing drainage mechanism and a water return mechanism, so that after the first driving mechanism is started, the cooling pushing mechanism and the second driving mechanism are driven to move downward synchronously, and the cooling pushing mechanism is driven to rotate continuously. During the rotation and descent of the cooling pushing mechanism, the cooling water inside the adjacent water storage cylinder in the mixing mechanism is mixed and cooled, and then the sealing drainage mechanism is triggered, so that the cooling water after mixing and cooling is stably returned to the water tank. During the descent of the second driving mechanism, the mixing mechanism is not affected due to the effect of the overrunning clutch until the second driving mechanism contacts the sealing drainage mechanism. Subsequently, as the first driving mechanism drives the cooling pushing mechanism and the second driving mechanism to continuously move upward and reset, the second driving mechanism The driving mechanism drives the mixing mechanism, thereby the two water storage cylinders in the mixing mechanism are replaced, and the emptied water storage cylinder is moved to the bottom of the return water mechanism to receive the two cooling waters, and the water storage cylinders containing the two cooling waters are moved to the bottom of the cooling and pushing mechanism to wait for mixing and cooling. Compared with the same type of device in the prior art, the present invention utilizes a large flow rate to output cooling water to reduce the difficulty of controlling the water temperature inside the water tank. It does not directly return the used cooling water and the unused cooling water to the inside of the water tank, but periodically mixes, cools and returns the used cooling water and the unused cooling water, effectively reducing the number of water temperature fluctuations inside the water tank, and further reducing the temperature difference between the return water and the cooling water inside the water tank, reducing the difficulty of controlling the cooling water temperature and improving the stability of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the casing of the present invention; Figure 3 It is a schematic structural diagram of the first driving mechanism, the cooling and pushing mechanism, and the second driving mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the mixing mechanism and the water return mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the sealing drainage mechanism of the present invention.

[0019] In the figure: 1, water tank; 2, casing; 3, first driving mechanism; 31, reciprocating screw; 32, driving motor; 33, outer sleeve; 34, first spring; 35, inner sleeve; 4, cooling and pushing mechanism; 41, rotating disk; 42, square shaft; 43, pushing rod; 44, columnar refrigerator; 5, second driving mechanism; 51, outer sleeve; 52, connecting shaft; 53, one-way screw; 54, second spring; 55, first magnet; 6, mixing mechanism; 61, lower rotating seat; 62, water storage cylinder; 63, upper rotating seat; 64, threaded collar; 7, sealing and drainage mechanism; 71, drainage channel; 72, U-shaped frame; 73, second magnet; 74, third spring; 75, sealing plate; 8, return water mechanism; 81, extension plate; 82, first transfer shell; 83, second transfer shell; 84, used cooling water return pipe; 85, unused cooling water return pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The present invention provides Figure 1-5 The laboratory cooling water device with a temperature control accuracy of ±0.05°C shown in the figure comprises a water tank 1, a casing 2 is fixedly arranged on the top left side of the water tank 1, a first driving mechanism 3 is arranged on the top of the inner cavity of the casing 2, a cooling pushing mechanism 4 is arranged at the bottom of the first driving mechanism 3, and a second driving mechanism 5 is arranged on the outside of the first driving mechanism 3, a mixing mechanism 6 is rotatably arranged at the bottom of the inner cavity of the casing 2, a sealing drainage mechanism 7 is arranged on the top left side of the mixing mechanism 6, a water return mechanism 8 is arranged at the bottom of the casing 2, and the water return mechanism 8 is located inside the water tank 1.

[0022] like Figure 3 As shown, the first driving mechanism 3 includes a reciprocating screw 31, a driving motor 32, an outer sleeve 33, a first spring 34 and an inner sleeve 35, wherein the reciprocating screw 31 passes through the casing 2 and is rotatably connected to the casing 2 through a bearing, the driving motor 32 is fixedly arranged on the top of the casing 2 and is transmission-connected to the reciprocating screw 31, the outer sleeve 33, the first spring 34 and the inner sleeve 35 are sequentially sleeved and arranged on the outside of the reciprocating screw 31 from top to bottom, the outer sleeve 33 is transmission-connected to the reciprocating screw 31, the first spring 34 is fixedly connected between the outer sleeve 33 and the inner sleeve 35, and the inner sleeve 35 is slidably connected to the reciprocating screw 31 and is slidably arranged on the inside of the outer sleeve 33.

[0023] like Figure 3As shown, the cooling and pushing mechanism 4 includes a rotating disk 41, a square shaft 42, a pushing rod 43 and a columnar refrigerator 44, wherein the rotating disk 41 is rotatably sleeved at the outer bottom end of the inner sleeve 35 through a bearing, the square shaft 42 is slidably nested in the bottom end of the reciprocating screw 31 along the vertical direction and is fixedly connected to the rotating disk 41, the pushing rod 43 is rotatably nested at the bottom center of the rotating disk 41 through a bearing, and a plurality of columnar refrigerators 44 are provided, and the plurality of columnar refrigerators 44 are evenly and fixedly arranged on the outer side of the bottom of the rotating disk 41.

[0024] By setting the above-mentioned first driving mechanism 3 and cooling pushing mechanism 4, the driving motor 32 can drive the reciprocating screw 31 to rotate continuously after starting. When the reciprocating screw 31 rotates, the cooling pushing mechanism 4 is driven to rotate as a whole through the square shaft 42. At the same time, the cooling pushing mechanism 4 is driven to descend as a whole through the first spring 34 and the inner sleeve 35. When the pushing rod 43 and the columnar refrigerator 44 both enter the right water storage cylinder 62, if there is cooling water in the right water storage cylinder 62, the continuously rotating columnar refrigerator 44 mixes and cools the cooling water, thereby reducing the temperature difference between the mixed cooling water and the cooling water in the water tank 1.

[0025] like Figure 3 As shown, the second driving mechanism 5 includes an outer sleeve plate 51, a connecting shaft 52, a one-way screw 53, a second spring 54 and a first magnet 55, wherein the outer sleeve plate 51 is fixedly sleeved on the outer bottom end of the outer sleeve 33, the connecting shaft 52 is fixedly set on the left side of the bottom of the outer sleeve plate 51, the one-way screw 53 is slidably nested along the vertical direction on the outer side of the connecting shaft 52, the second spring 54 is fixedly connected between the connecting shaft 52 and the one-way screw 53, and the first magnet 55 is fixedly set at the bottom end of the one-way screw 53.

[0026] By setting the above structure, when the outer sleeve 33 descends, the second driving mechanism 5 is driven to descend as a whole. During the descent of the second driving mechanism 5, the one-way screw 53 drives the threaded collar 64 to rotate continuously. At this time, due to the effect of the overrunning clutch, the upper rotating seat 63 does not rotate. As the outer sleeve 33 continues to descend, the first magnet 55 contacts and adsorbs the second magnet 73. At this time, the outer sleeve 33 moves to the bottom of the reciprocating thread outside the reciprocating screw 31. Subsequently, as the reciprocating screw 31 continues to rotate, the outer sleeve 33 moves up and resets. During the upward movement of the outer sleeve 33, due to the action of the first magnet 55 and the second magnet 73, the upper rotating seat 63 does not rotate. Due to the pulling of the first magnet 55 and the second magnet 73, the one-way screw 53 does not move upward. At this time, the second spring 54 is continuously stretched. When the second spring 54 is stretched to the extreme value, as the outer sleeve 33 continues to rise, the one-way screw 53 drives the first magnet 55 to detach from the top of the second magnet 73. At this time, the stretched second spring 54 drives the one-way screw 53 to move upward and reset. During the one-way screw 53 moving upward, it drives the threaded ring 64 to rotate continuously. At this time, the threaded ring 64 rotates, which drives the upper rotating seat 63 to rotate. When the upper rotating seat 63 rotates, it drives the two water storage cylinders 62 to exchange positions.

[0027] like Figure 4 As shown, the mixing mechanism 6 includes a lower rotating seat 61, a water storage cylinder 62, an upper rotating seat 63 and a threaded collar 64, wherein the lower rotating seat 61 is rotatably nested in the casing 2 through a bearing, two water storage cylinders 62 are provided, and the two water storage cylinders 62 are respectively fixedly nested on both sides of the top of the lower rotating seat 61, and the upper rotating seat 63 is fixedly sleeved on the outer top of the two lower rotating seats 61, and the threaded collar 64 is connected to the inner side of the upper rotating seat 63 through an overrunning clutch, and the threaded collar 64 is sleeved on the outer side of the one-way screw 53 and is threadedly connected to the one-way screw 53.

[0028] By setting the above structure, the left water storage cylinder 62 can receive the two types of cooling water output by the return water mechanism 8, while the right water storage cylinder 62 can drive the contained cooling water to wait for mixing and cooling treatment.

[0029] like Figure 5 As shown, the sealed drainage mechanism 7 includes a drainage channel 71, a U-shaped frame 72, a second magnet 73, a third spring 74 and a sealing plate 75, wherein the drainage channel 71 is arranged through the right side of the bottom of the casing 2, the U-shaped frame 72 is fixedly arranged at the bottom of the casing 2, the second magnet 73 is fixedly arranged on the inner side of the U-shaped frame 72 and is located directly below the first magnet 55, the third spring 74 is fixedly connected to the right end of the inner side of the U-shaped frame 72, and the sealing plate 75 is fixedly connected to the top of the third spring 74 and seals the bottom opening of the drainage channel 71.

[0030] By setting the above structure, after the bottom end of the push rod 43 contacts the top of the drainage channel 71, as the outer sleeve 33 continues to descend, the push rod 43 drives the sealing plate 75 to continue to descend and compress the third spring 74. If there is cooling water in the right water storage cylinder 62, the cooling water that has been cooled and evenly mixed will continue to enter the water tank 1 through the drainage channel 71 for recycling. When the push rod 43 is subsequently moved up and reset, the downward-moving sealing plate 75 is reset under the push of the third spring 74, thereby realizing the sealing of the drainage channel 71 again. If there is cooling water in the right water storage cylinder 62, the cooling water will all flow back to the water tank 1 at this time.

[0031] like Figure 4 As shown, the return water mechanism 8 includes an extension plate 81, a first transfer shell 82, a second transfer shell 83, a used cooling water return pipe 84 and an unused cooling water return pipe 85, wherein the extension plate 81 is fixedly connected to the inner wall of the casing 2, the first transfer shell 82 and the second transfer shell 83 are moved from back to front and fixedly penetrated through the top of the extension plate 81, the used cooling water return pipe 84 is fixedly penetrated through the side of the first transfer shell 82, and the unused cooling water return pipe 85 is fixedly penetrated through the side of the second transfer shell 83.

[0032] By setting the above structure, when cooling down multiple laboratory equipment, the water pump transports the cooling water in the water tank 1 to the plate heat exchanger and the heating component for treatment respectively. The treated water is output and mixed under the action of the proportional three-way confluence valve to form at least 2k amounts of cooling water, of which k amounts of cooling water flow to multiple laboratory equipment respectively under the action of the diverter valve, thereby cooling down the laboratory equipment. The remaining cooling water enters the second transfer shell 83 through the unused cooling water return pipe 85, and the cooling water that has completed the cooling of the laboratory equipment enters the first transfer shell 82 through the used cooling water return pipe 84. The cooling water inside the first transfer shell 82 and the second transfer shell 83 falls into the left water storage cylinder 62 from their bottom openings under the action of gravity. When the bottom opening of the first transfer shell 82 or the second transfer shell 83 is not located above the top openings of the two water storage cylinders 62 but is located above the upper rotating seat 63, the upper rotating seat 63 seals the bottom opening of the first transfer shell 82 or the second transfer shell 83 to prevent the cooling water from flowing out.

[0033] The present invention also discloses a method for controlling a cooling water device with a temperature control accuracy of ±0.05°C for use in a laboratory, the method specifically comprising the following steps: S1. When cooling multiple laboratory equipment, the water pump transports the cooling water in the water tank 1 to the plate heat exchanger and the heating assembly for treatment. The treated water is output and mixed under the action of the proportional three-way confluence valve to form at least two required amounts of cooling water, of which one times the required amount of cooling water flows to multiple laboratory equipment under the action of the diverter valve, thereby cooling the laboratory equipment. The remaining cooling water enters the second transfer shell 83 through the unused cooling water return pipe 85, and the cooling water that has completed the cooling of the laboratory equipment enters the first transfer shell 82 through the used cooling water return pipe 84; S2, the cooling water inside the first transfer shell 82 and the second transfer shell 83 falls into the left water storage cylinder 62 from the bottom opening thereof under the action of gravity, and the drive motor 32 is started at the same time. After the drive motor 32 is started, the reciprocating screw 31 is driven to rotate continuously. When the reciprocating screw 31 rotates, the cooling push mechanism 4 is driven to rotate as a whole through the square shaft 42, and the cooling push mechanism 4 is driven to descend as a whole through the first spring 34 and the inner sleeve 35. In addition, when the reciprocating screw 31 rotates, the outer sleeve 33 is also driven to descend continuously. When the outer sleeve 33 descends, the second drive mechanism 5 is driven to descend as a whole. During the descent of the second drive mechanism 5, the one-way screw 53 drives the threaded collar 64 to rotate continuously. At this time, due to the effect of the overrunning clutch, the upper rotating seat 63 does not rotate; S3, when the outer sleeve 33 descends to a first threshold, the push rod 43 and the columnar refrigerator 44 both enter the right water storage cylinder 62. If there is cooling water in the right water storage cylinder 62, the continuously rotating columnar refrigerator 44 mixes and cools the cooling water. S4, when the outer sleeve 33 descends to a second threshold, the bottom end of the push rod 43 contacts the top of the drainage channel 71. As the outer sleeve 33 continues to descend, the push rod 43 drives the sealing plate 75 to continue to descend and compress the third spring 74. If there is cooling water in the right water storage cylinder 62, the cooling water that has been cooled and evenly mixed will continue to enter the water tank 1 through the drainage channel 71 for recycling. S5, when the outer sleeve 33 descends to a third threshold, the bottom of the rotating disk 41 contacts the top of the right water storage cylinder 62. At this time, due to the obstruction of the right water storage cylinder 62, the cooling and pushing mechanism 4 cannot continue to descend. Subsequently, as the outer sleeve 33 continues to descend, the second driving mechanism 5 continues to descend while the first spring 34 is continuously compressed; S6, when the outer sleeve 33 descends to a fourth threshold, the first magnet 55 contacts and adsorbs the second magnet 73, and the outer sleeve 33 moves to the bottom of the reciprocating thread on the outer side of the reciprocating screw 31. As the reciprocating screw 31 continues to rotate, the outer sleeve 33 moves upward and resets. During the upward movement of the outer sleeve 33, due to the pulling of the first magnet 55 and the second magnet 73, the one-way screw 53 does not move upward, and the second spring 54 is continuously stretched. S7, when the outer sleeve 33 rises to the fifth threshold, the push rod 43 and the plurality of columnar coolers 44 are all moved out from the right water storage cylinder 62, and the downwardly moved sealing plate 75 is reset under the push of the third spring 74. If there is cooling water in the right water storage cylinder 62, the cooling water will all flow back to the water tank 1 at this time; S8, when the rising distance of the outer sleeve 33 reaches the sixth threshold, the second spring 54 is stretched to the extreme value, and subsequently as the outer sleeve 33 continues to rise, the one-way screw 53 drives the first magnet 55 to detach from the top of the second magnet 73, and at this time, the stretched second spring 54 drives the one-way screw 53 to move up and reset, and during the one-way screw 53 moving up, the threaded collar 64 is driven to rotate continuously, and at this time, the threaded collar 64 rotates and drives the upper rotating seat 63 to rotate, and the upper rotating seat 63 rotates and drives the two water storage cylinders 62 to exchange positions, and during the rotation of the upper rotating seat 63, the top of the upper rotating seat 63 periodically contacts and seals the first transfer shell 82 and the bottom opening of the second transfer shell 83; S9. When the rising distance of the outer sleeve 33 reaches the seventh threshold, the two water storage cylinders 62 are replaced, and the outer sleeve 33 moves to the top of the reciprocating thread outside the reciprocating screw 31. Subsequently, as the reciprocating screw 31 continues to rotate, the outer sleeve 33 moves down again to repeat the above-mentioned cooling, reflux and replacement operations.

[0034] The temperature difference of the cooling water discharged by the laboratory temperature control device is controlled within the range of ±0.05℃. At the same load, the cooling water temperature difference is small and the temperature is constant, which can greatly improve the effect of load temperature adjustment. The following table 1 is the cooling water temperature table detected by the temperature sensor: Table 1 Cooling water temperature record table detected by temperature sensor

[0035] Table 1 shows the temperature data of the cooling water at the outlet from October 1 to 4, 2024. The target temperature is 42°C. Starting from 00:00, the temperature is selected every 4 hours, and the temperature difference is less than ±0.05°C.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The cooling water device with temperature control accuracy of ±0.05℃ for laboratory use is characterized by: The invention comprises a water tank (1), wherein a casing (2) is fixedly arranged on the left side of the top of the water tank (1), a first driving mechanism (3) is arranged on the top of the inner cavity of the casing (2), a cooling pushing mechanism (4) is arranged at the bottom of the first driving mechanism (3), and a second driving mechanism (5) is arranged outside the first driving mechanism (3), a mixing mechanism (6) is rotatably arranged at the bottom of the inner cavity of the casing (2), a sealing drainage mechanism (7) is arranged on the left side of the top of the mixing mechanism (6), and a water return mechanism (8) is arranged at the bottom of the casing (2), and the water return mechanism (8) is located inside the water tank (1); The cooling and pushing mechanism (4) comprises a rotating disk (41), a square shaft (42), a pushing rod (43) and a columnar refrigerator (44); The rotating disk (41) is rotatably sleeved on the outer bottom end of the inner sleeve (35) via a bearing, the square shaft (42) is slidably nested in the bottom end of the reciprocating screw (31) along the vertical direction and is fixedly connected to the rotating disk (41), the push rod (43) is rotatably nested on the bottom center of the rotating disk (41) via a bearing, and a plurality of columnar coolers (44) are provided, and the plurality of columnar coolers (44) are evenly fixedly arranged on the outer side of the bottom of the rotating disk (41).

2. The cooling water device with a temperature control accuracy of ±0.05°C for laboratory use according to claim 1, characterized in that: The first driving mechanism (3) comprises a reciprocating screw (31), a driving motor (32), an outer sleeve (33), a first spring (34) and an inner sleeve (35); The reciprocating screw (31) passes through the casing (2) and is rotationally connected to the casing (2) via a bearing; the driving motor (32) is fixedly arranged on the top of the casing (2) and is transmission-connected to the reciprocating screw (31); the outer sleeve (33), the first spring (34) and the inner sleeve (35) are sequentially sleeved and arranged on the outside of the reciprocating screw (31) from top to bottom; the outer sleeve (33) is transmission-connected to the reciprocating screw (31); the first spring (34) is fixedly connected between the outer sleeve (33) and the inner sleeve (35); and the inner sleeve (35) is slidably connected to the reciprocating screw (31) and is slidably arranged on the inside of the outer sleeve (33).

3. The cooling water device with a temperature control accuracy of ±0.05°C for laboratory use according to claim 2, characterized in that: The second driving mechanism (5) comprises an outer sleeve plate (51), a connecting shaft (52), a one-way screw (53), a second spring (54) and a first magnet (55); The outer sleeve (51) is fixedly sleeved on the outer bottom end of the outer sleeve (33); the connecting shaft (52) is fixedly arranged on the left side of the bottom of the outer sleeve (51); the one-way screw (53) is slidably nested on the outer side of the connecting shaft (52) in a vertical direction; the second spring (54) is fixedly connected between the connecting shaft (52) and the one-way screw (53); and the first magnet (55) is fixedly arranged on the bottom end of the one-way screw (53).

4. The cooling water device with a temperature control accuracy of ±0.05°C for laboratory use according to claim 3, characterized in that: The mixing mechanism (6) comprises a lower rotating seat (61), a water storage cylinder (62), an upper rotating seat (63) and a threaded collar (64); The lower rotating seat (61) is rotatably nested in the housing (2) via a bearing. Two water storage cylinders (62) are provided. The two water storage cylinders (62) are respectively fixedly nested on both sides of the top of the lower rotating seat (61). The upper rotating seat (63) is fixedly sleeved on the outer tops of the two lower rotating seats (61). The threaded collar (64) is connected to the inner side of the upper rotating seat (63) via an overrunning clutch. The threaded collar (64) is sleeved on the outer side of the one-way screw (53) and is threadedly connected to the one-way screw (53).

5. The cooling water device with a temperature control accuracy of ±0.05°C for laboratory use according to claim 4, characterized in that: The sealed drainage mechanism (7) comprises a drainage channel (71), a U-shaped frame (72), a second magnet (73), a third spring (74) and a sealing plate (75); The drainage channel (71) is arranged through the right side of the bottom of the casing (2); the U-shaped frame (72) is fixedly arranged at the bottom of the casing (2); the second magnet (73) is fixedly arranged inside the U-shaped frame (72) and is located directly below the first magnet (55); the third spring (74) is fixedly connected to the right end of the inside of the U-shaped frame (72); and the sealing plate (75) is fixedly connected to the top of the third spring (74) and seals the bottom opening of the drainage channel (71).

6. The cooling water device with a temperature control accuracy of ±0.05°C for laboratory use according to claim 5, characterized in that: The water return mechanism (8) comprises an extension plate (81), a first transfer shell (82), a second transfer shell (83), a used cooling water return pipe (84) and an unused cooling water return pipe (85); The extension plate (81) is fixedly connected to the inner wall of the casing (2); the first transfer shell (82) and the second transfer shell (83) are fixedly arranged on the top of the extension plate (81) and moved from back to front; the used cooling water return pipe (84) is fixedly arranged on the side of the first transfer shell (82); and the unused cooling water return pipe (85) is fixedly arranged on the side of the second transfer shell (83).

7. A control method for a cooling water device with a temperature control accuracy of ±0.05°C for use in a laboratory, characterized in that: The method is implemented using a cooling water device with a temperature control accuracy of ±0.05°C for use in a laboratory as claimed in claim 6, wherein the method specifically comprises the following steps: S1. When cooling a plurality of laboratory equipment, a water pump transports the cooling water in the water tank (1) to the plate heat exchanger and the heating assembly for treatment. The treated water is output and mixed under the action of a proportional three-way converging valve to form cooling water of at least twice the required amount. One times the required amount of cooling water flows to a plurality of laboratory equipment under the action of a diverter valve, thereby cooling the laboratory equipment. The remaining cooling water enters the interior of the second transfer shell (83) through the unused cooling water return pipe (85). The cooling water that has completed the cooling of the laboratory equipment enters the interior of the first transfer shell (82) through the used cooling water return pipe (84); S2, the cooling water inside the first transfer shell (82) and the second transfer shell (83) falls into the left water storage cylinder (62) from the bottom opening thereof under the action of gravity, and the drive motor (32) is started at the same time. After the drive motor (32) is started, it drives the reciprocating screw (31) to rotate continuously. When the reciprocating screw (31) rotates, it drives the cooling push mechanism (4) to rotate as a whole through the square shaft (42). At the same time, the cooling push mechanism (4) is driven to descend as a whole through the first spring (34) and the inner sleeve (35). In addition, when the reciprocating screw (31) rotates, it also drives the outer sleeve (33) to continuously descend. When the outer sleeve (33) descends, it drives the second drive mechanism (5) to descend as a whole. During the descent of the second drive mechanism (5), the one-way screw (53) drives the threaded collar (64) to rotate continuously. At this time, due to the action of the overrunning clutch, the upper rotating seat (63) does not rotate; S3, when the outer sleeve (33) descends to a first threshold, the push rod (43) and the columnar refrigerator (44) both enter the right water storage cylinder (62). If there is cooling water in the right water storage cylinder (62), the continuously rotating columnar refrigerator (44) mixes and cools the cooling water; S4, when the outer sleeve (33) descends to a second threshold, the bottom end of the push rod (43) contacts the top of the drainage channel (71), and as the outer sleeve (33) continues to descend, the push rod (43) drives the sealing plate (75) to continue to descend and compress the third spring (74). If there is cooling water in the right water storage cylinder (62), the cooling water that has been cooled and evenly mixed continues to enter the water tank (1) through the drainage channel (71) to be recirculated; S5, when the outer sleeve (33) descends a distance that reaches a third threshold, the bottom of the rotating disk (41) contacts the top of the right water storage cylinder (62). At this time, due to the obstruction of the right water storage cylinder (62), the cooling push mechanism (4) cannot continue to descend. Subsequently, as the outer sleeve (33) continues to descend, the second drive mechanism (5) continues to descend while the first spring (34) is continuously compressed; S6, when the outer sleeve (33) descends to a fourth threshold, the first magnet (55) contacts and adsorbs the second magnet (73), and the outer sleeve (33) moves to the bottom of the reciprocating thread on the outer side of the reciprocating screw (31). Subsequently, as the reciprocating screw (31) continues to rotate, the outer sleeve (33) moves upward and resets. During the upward movement of the outer sleeve (33), due to the pulling of the first magnet (55) and the second magnet (73), the one-way screw (53) does not move upward, and the second spring (54) is continuously stretched. S7, when the rising distance of the outer sleeve (33) reaches the fifth threshold value, the push rod (43) and the plurality of columnar refrigerators (44) are all moved out from the inside of the right water storage cylinder (62), and the downwardly moved sealing plate (75) is reset under the push of the third spring (74). If there is cooling water in the right water storage cylinder (62), then all the cooling water flows back into the water tank (1); S8, when the rising distance of the outer sleeve (33) reaches the sixth threshold value, the second spring (54) is stretched to the extreme value, and subsequently as the outer sleeve (33) continues to rise, the one-way screw (53) drives the first magnet (55) to detach from the top of the second magnet (73), and the stretched second spring (54) drives the one-way screw (53) to move upward and reset, and the one-way screw (53) drives the threaded collar (64) to rotate continuously during the upward movement, and the threaded collar (64) drives the upper rotating seat (63) to rotate when the threaded collar (64) rotates, and the upper rotating seat (63) drives the two water storage cylinders (62) to exchange positions when the upper rotating seat (63) rotates, and the top of the upper rotating seat (63) periodically contacts and seals the bottom openings of the first transfer shell (82) and the second transfer shell (83) during the rotation of the upper rotating seat (63); S9. When the rising distance of the outer sleeve (33) reaches the seventh threshold value, the two water storage cylinders (62) are replaced, and the outer sleeve (33) moves to the top of the reciprocating thread on the outside of the reciprocating screw (31). Subsequently, as the reciprocating screw (31) continues to rotate, the outer sleeve (33) moves downward again to repeat the above-mentioned cooling, reflux and replacement operations.

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