A cooling water circulation system for energy-saving vacuum dehumidification machine

Abstract

The present invention relates to an energy-saving vacuum rehumidification machine cooling water circulation system, including a vacuum rehumidification machine, a cooling water tower, a first circulating water pump, a second circulating water pump, a cooling circulating water tank, a temperature sensor and a processor; a partition is arranged in the cooling circulating water tank, and the partition divides the cooling circulating water tank into a hot water chamber and a cooling water chamber which are connected at the bottom, and the partition can move in the cooling circulating water tank. This technology avoids direct contact between hot water and cold water by dividing the cooling circulating water tank into a hot water chamber and a cooling water chamber; adds a set of independent cooling water self-circulating pipelines, so that the cooling water in the cooling circulating water tank can be circulated and cooled uninterruptedly, and adds energy-saving and consumption-reducing design, and installs a temperature sensor at the inlet of the circulating water pump, which can achieve the purpose of energy saving and consumption reduction while ensuring that the cooling water temperature is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum rehumidification machine auxiliary equipment for a tobacco shred production line, and particularly relates to an energy-saving vacuum rehumidification machine cooling water circulation system. Background Art

[0002] The vacuum dehumidification machine is mainly used in the tobacco leaf production line and is a major process in tobacco leaf pretreatment. The existing vacuum dehumidification machine cooling water circulation system has the following working procedures: Figure 1 As shown, the hot water discharged from the vacuum rehumidification machine 01 enters the cooling tower 02 for cooling, and the cooled water flows into the cooling circulation water tank 03, and is then pumped into the vacuum rehumidification machine by the circulation pump 04.

[0003] In the production process, the existing cooling water circulation system has low cooling efficiency. As a result, when the vacuum dehumidification machine works continuously in summer, the pumping time is often prolonged due to the high cooling water temperature, and the steam consumption increases significantly. In severe cases, the high cooling water temperature may cause the subsequent process to be cut off due to long-term pumping, thus affecting the production efficiency of the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-saving vacuum rehumidification machine cooling water circulation system to solve the problem that the cooling efficiency of the cooling water circulation mode in the prior art is low, which affects the production efficiency of the vacuum rehumidification machine.

[0005] The present invention is achieved through the following technical solutions:

[0006] An energy-saving vacuum dehumidification machine cooling water circulation system, comprising a vacuum dehumidification machine, a cooling water tower, a first circulating water pump, a second circulating water pump, a cooling circulating water tank, a temperature sensor and a processor;

[0007] A partition is provided in the cooling circulation water tank, the partition divides the cooling circulation water tank into a hot water chamber and a cooling water chamber which are connected at the bottom, the partition can move in the cooling circulation water tank, a hot water outlet is provided at the side of the hot water chamber, and a cooling water outlet is provided at the bottom of the cooling water chamber;

[0008] The water outlet of the vacuum rehumidifier is connected to the top of the hot water chamber through a first pipeline; the hot water outlet on the side of the hot water chamber is connected to the inlet of the first circulating water pump through a second pipeline, and the outlet of the first circulating water pump is connected to the inlet of the cooling water tower through a third pipeline;

[0009] The outlet of the cooling water tower is connected to the top of the cooling water chamber through the fourth pipeline; the cooling water outlet at the bottom of the cooling water chamber is connected to the inlet of the second circulating water pump through the fifth pipeline, and the outlet of the second circulating water pump is connected to the water inlet of the vacuum rehumidification machine through the sixth pipeline;

[0010] Temperature sensors are provided at the inlet of the first circulating water pump, the inlet of the second circulating water pump, the hot water chamber and the cooling water chamber; the processor is respectively connected to the temperature sensor, the first circulating water pump and the second circulating water pump via electrical signals.

[0011] Furthermore, the partition can move in the up-down direction of the cooling circulation water tank, and can also translate in the cooling circulation water tank.

[0012] Furthermore, the cooling circulating water tank comprises a cooling circulating water tank body, an upper horizontal track, a lower horizontal track, an upper transmission device, a lower transmission device, a horizontal motor, a vertical track, a vertical transmission device, a vertical motor and a partition;

[0013] An upper horizontal track is arranged near the top of the inner side of the cooling circulating water tank body, and a lower horizontal track is arranged near the bottom;

[0014] The upper transmission device is arranged on the upper horizontal track, the lower transmission device is arranged on the lower horizontal track, the horizontal motor is arranged on the cooling circulating water tank body, and the output shaft of the horizontal motor drives the upper transmission device and the lower transmission device to move synchronously at the same time;

[0015] The upper end of the vertical track is connected to the upper transmission device, the lower end of the vertical track is connected to the lower transmission device, the vertical transmission device is installed on the vertical track, the output shaft of the vertical motor drives the vertical transmission device to move, and the partition is fixed on the vertical transmission device;

[0016] The horizontal motor and the vertical motor are both connected to the processor by electrical signals.

[0017] The partition is disposed between an outlet portion of the first pipeline and an outlet portion of the fourth pipeline.

[0018] The hot water outlet is arranged at the middle position of the side wall of the cooling circulation water tank, and the outlet of the first pipeline above the hot water chamber is located above the liquid level.

[0019] A fan is arranged in the cooling water tower, and the fan is controlled by a fan controller, and the fan controller is connected with the processor by electrical signals.

[0020] The beneficial effects of the present invention are:

[0021] This technology divides the cooling circulating water tank into a hot water chamber and a cooling water chamber through a partition, avoiding direct contact between hot water and cold water; an independent set of cooling water self-circulation pipelines is added, so that the cooling water in the cooling circulating water tank can be circulated and cooled uninterruptedly, and energy-saving and consumption-reducing design is added. A temperature sensor is installed at the inlet of the circulating water pump, which can achieve the purpose of energy saving and consumption reduction while ensuring that the cooling water temperature is effectively reduced.

[0022] This technical solution can translate and move up and down in the cooling circulating water tank through the partition, adjust the volume of the hot water chamber and the cooling water chamber at any time according to the change of the external ambient temperature, and finely adjust the temperature of the cooling water to ensure the stability of the temperature of the cooling water supplied to the vacuum rehumidification machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the current vacuum rehumidification cooling water circulation pipeline;

[0024] Figure 2 This is a schematic diagram of the vacuum rehumidification cooling water circulation pipeline of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the cooling circulating water tank of the present invention;

[0026] Figure 4 for Figure 3 AA section view.

[0027] Description of Reference Numerals

[0028] 01 vacuum rehumidification machine, 02 cooling water tower, 03 cooling circulating water tank, 04 circulating water pump, 1 vacuum rehumidification machine, 2 cooling water tower, 3 cooling circulating water tank, 4 first circulating water pump, 5 second circulating water pump, 6 first pipeline, 7 third pipeline, 8 fourth pipeline, 9 fifth pipeline, 10 sixth pipeline, 31 partition, 32 cooling water chamber, 33 hot water chamber, 34 cooling circulating water tank body, 35 upper transmission device, 36 vertical transmission device, 37 horizontal motor, 38 vertical motor, 321 cooling water outlet, 39 upper horizontal track, 40 vertical track, 41 lower horizontal track, 42 ​​lower transmission device. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is described in detail below through examples. The following examples are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0030] like Figures 2 to 4 As shown, the present application provides an energy-saving vacuum dehumidification machine cooling water circulation system, including a vacuum dehumidification machine 1, a cooling water tower 2, a first circulating water pump 4, a second circulating water pump 5, a cooling circulating water tank 3, a temperature sensor and a processor.

[0031] In the technical solution of the present application, the vacuum tempering machine 1 is the prior art and has not been improved in the technical solution of the present application. Therefore, in the technical solution of the present application, the vacuum tempering machine is not described. The vacuum tempering machine is provided with a water inlet for entering the cooled cooling water and a water outlet for discharging the heated cooling water.

[0032] A partition 31 is provided in the cooling circulating water tank 3 to separate the cooling circulating water tank into a hot water chamber 33 and a cooling water chamber 32 which are connected at the bottom. In the technical solution of the present application, the partition 31 moves forward and backward and upward and downward in the cooling circulating water tank body 34. In the technical solution of the present application, the improvement of the cooling circulating water tank is the key technology of the present application. Figure 1 As shown, the hot water discharged from the vacuum dehumidification machine is directly pumped into the cooling water tower, and the hot cooling water is completely cooled before entering the cooling circulation water tank. This situation is not a big problem in spring and autumn, but in winter, the temperature of the external environment is low, and all the heated cooling water is cooled by the cooling water tower, which will lead to the cooling water temperature being too low, affecting the working efficiency of the vacuum dehumidification machine, and the use of the cooling water tower increases energy consumption. In summer, the heated cooling water is all cooled in the cooling water tower. Combined with the high temperature of the external environment, the cooling efficiency of the cooling tower cannot meet the cooling needs, which will seriously affect the normal operation of the vacuum dehumidification machine. On the other hand, the cooling water tower and the cooling circulation water tank of the entire cooling water circulation system are affected by the temperature of the external environment, and the temperature of the external environment changes irregularly, resulting in unstable cooling water temperature, which in turn affects the stable production of the vacuum dehumidification machine, causing the moisture content of the tobacco to fluctuate, affecting the quality of the tobacco.

[0033] like Figure 3 and Figure 4 As shown, an improved structure of a cooling circulating water tank is mentioned, including a cooling circulating water tank body 34. In the technical solution of the present application, the cooling circulating water tank body is the cooling circulating water tank of the prior art, and does not need to be rebuilt. Only by improving the original one can the technical solution of the present application be realized. The cooling circulating water tank in this embodiment is a rectangular pool as a whole. Of course, if the original cooling circulating water tank is square, the technical solution of the present application can also be realized.

[0034] In the present application, left, right, front, back, up and down are all relative position concepts and are only used to illustrate the technical solutions of the present application.

[0035] A pair of parallel upper horizontal rails 39 are arranged near the top of the inner side of the cooling circulating water tank body along the two long sides. In other embodiments of the present application, they may not be rails, and the technical solution of the present application can be implemented as long as they can support the upper transmission device.

[0036] A pair of parallel lower horizontal rails 41 are arranged on the two long sides of the inner side of the cooling circulating water tank body near the bottom. Similarly, in other embodiments of the present application, it may not be a rail, as long as it can support the lower transmission device, the technical solution of the present application can be implemented.

[0037] The upper transmission device 35 is arranged on the upper horizontal track 39, the lower transmission device 42 is arranged on the lower horizontal track 41, the horizontal motor 37 is arranged on the cooling circulation water tank body 34, and the output shaft of the horizontal motor drives the upper transmission device and the lower transmission device to move synchronously at the same time; in the technical solution of the present application, the upper transmission device and the lower transmission device are both chain transmission devices, and both are existing technologies, which will not be described in detail here.

[0038] A horizontal motor 37 is installed on the left or right side of the cooling circulation water tank body, and the output shaft of the horizontal motor is connected to the upper transmission device and the lower transmission device through a transmission device, driving the upper transmission device and the lower transmission device to move synchronously.

[0039] A pair of vertical rails 40 are connected between the upper transmission device 35 and the lower transmission device 42, respectively close to the front side wall and the rear side wall of the cooling circulation water tank. A vertical transmission device 36 is arranged on the vertical rails 40. The vertical transmission device of this embodiment is a chain transmission device. In the technical solution of this application, the chain transmission device is all prior art.

[0040] A partition 31 is installed on the vertical transmission device, which divides the cooling circulation water tank body into two parts connected at the bottom, namely a hot water chamber 33 and a cooling water chamber 32. The hot water chamber is used to accommodate the heated cooling water discharged from the cooling water outlet of the vacuum rehumidification machine, and the cooling water chamber is used to accommodate the cooling water after cooling by the cooling water tower.

[0041] And when adjustment is needed, the processor determines whether to move the horizontal motor or the vertical motor after calculation based on the collected signal. The horizontal motor moves, driving the vertical track, the vertical transmission device and the partition to move horizontally synchronously, changing the volume of the hot water chamber and the cooling water chamber. If the vertical motor moves, it drives the horizontal transmission device to move, and then drives the partition to rise or fall. If the partition rises, the connection area between the hot water chamber and the cooling water chamber increases, which is conducive to the direct heat exchange between the hot cooling water and the cooled cooling water. If the partition falls, the connection area between the hot water chamber and the cooling water chamber decreases, reducing the direct heat exchange between the hot cooling water and the cooled cooling water.

[0042] A water outlet is provided in the middle of the left side wall of the cooling circulating water tank body, and the water outlet is connected to the hot water chamber, and is used to pump the hot cooling water entering the hot water chamber into the cooling water tower through the circulating water pump. An overflow hole is provided near the top of the side wall of the cooling circulating water tank body within the hot water chamber, and is used to allow excess hot cooling water to overflow out of the cooling circulating water tank body.

[0043] A cooling water outlet 321 is provided at the bottom of the cooling circulation water tank body within the cooling water chamber, close to the right side wall of the cooling circulation water tank body.

[0044] This technical solution sets a partition 31 in the cooling circulating water tank, and the heated cooling water discharged from the vacuum rehumidifier first enters the hot water chamber. The volume in the hot water chamber is much larger than the amount of water pumped from the hot water chamber to the cooling water tower by the circulating water pump. Therefore, the heated cooling water first achieves a balance of water volume and a balance of cooling water temperature over a long range in the hot water chamber, ensuring that the temperature fluctuation of the hot cooling water going to the cooling water tower is reduced. Secondly, the temperature of the heated cooling water is higher than the temperature of the external environment even in summer. The hot cooling water is initially cooled and lowered by the hot water chamber, reducing the workload of the cooling water tower and improving the cooling efficiency of the cooling water. Thirdly, because the hot water chamber is connected to the cooling water chamber at the bottom, the liquid level of the cooling water in the cooling circulating water tank is guaranteed.

[0045] The water outlet of the vacuum rehumidification machine is connected to the top of the hot water chamber through the first pipeline 6. Specifically, the water outlet of the first pipeline above the hot water chamber maintains a certain distance from the liquid level of the hot water chamber, rather than being inserted below the liquid level of the hot water chamber. This structural setting is conducive to the uniform distribution of the heated cooling water discharged from the vacuum rehumidification machine in the hot water chamber, and improves the heat exchange efficiency with the external environment.

[0046] The hot water outlet on the side of the hot water chamber is connected to the inlet of the first circulating water pump 4 through the second pipeline, and the outlet of the first circulating water pump is connected to the inlet of the cooling water tower 2 through the third pipeline 7; in the technical solution of the present application, the hot water outlet on the side of the hot water chamber is arranged at the middle position of the side wall of the hot water chamber close to the liquid surface, and this position belongs to the relatively calm area of ​​the cooling water in the hot water chamber. The heated cooling water discharged from the vacuum rehumidifier oscillates with the liquid surface above the hot water chamber to facilitate the mixing of the hot cooling water. At the same time, the lower part is connected to the cooling water chamber, and the flow phenomenon will occur between the two chambers due to the temperature difference. In summer, the amount of water discharged to the cooling water tower is large, and more cooled cooling water will enter the hot water chamber, which will initially reduce the temperature of the hot cooling water in the hot water chamber. In winter, the amount of hot cooling water discharged to the cooling water tower is reduced or the cooling water tower is disabled. At this time, the hot cooling water in the hot water chamber enters the cooling water chamber, and the cooling water is heated to prevent the temperature of the cooling water from being too low.

[0047] The outlet of the cooling water tower 2 is connected to the top of the cooling water chamber through the fourth pipeline 8, and the water outlet of the fourth pipeline is also located above the liquid level of the cooling water chamber, so as to facilitate the rapid mixing of the cooled cooling water and the original cooling water in the cooling water chamber, thereby preventing the occurrence of undercurrent entering the cooling water outlet of the cooling water chamber and causing instability of the vacuum rehumidification machine.

[0048] The cooling water outlet 321 at the bottom of the cooling water chamber is connected to the inlet of the second circulating water pump 5 through the fifth pipeline 9, and the outlet of the second circulating water pump is connected to the water inlet of the vacuum rehumidification machine through the sixth pipeline 10; the flow rate of the second circulating water pump is related to the operation of the vacuum rehumidification machine. Because the production line is operated, maintaining stable production of the production line is an important requirement under normal circumstances, so the flow rate of the second circulating water pump is usually relatively stable.

[0049] Temperature sensors are arranged at the inlet of the first circulating water pump, the inlet of the second circulating water pump, the hot water chamber and the cooling water chamber; the processor is respectively connected with the temperature sensor, the first circulating water pump and the second circulating water pump via electrical signals.

[0050] The purpose of setting a temperature sensor at the inlet of the first circulating water pump is to detect the water temperature entering the inlet of the first circulating water pump. If the water temperature is too high, under the same circumstances, the cooling efficiency of the cooling water tower should be improved, such as increasing the fan speed, etc. If the temperature is low, the power of the cooling water tower should be reduced accordingly to achieve the purpose of energy saving. It is also possible to start the horizontal motor according to the inlet temperature of the first circulating water pump and the external environment temperature, move the partition toward the cooling water chamber, increase the volume of the hot water chamber to increase the residence time of the hot cooling water, reduce the cooling water temperature entering the cooling water tower, and improve the efficiency of the cooling water tower.

[0051] The purpose of setting a temperature sensor at the inlet of the second circulating water pump is to monitor the temperature of the cooling water entering the vacuum rehumidifier. The water temperature here maintains a smaller range value to ensure the stability of the cooling water temperature supplied to the vacuum rehumidifier. When the temperature is lower than the set temperature, the temperature of the cooling water is increased by reducing the power of the cooling water tower and the flow of the first circulating water pump to keep the cooling water temperature entering the vacuum rehumidifier within the set range. When the temperature is higher than the set temperature, the cooling is achieved by increasing the power of the cooling water tower and the flow of the first circulating water pump. When the temperature is too low, the cooling water temperature at the inlet of the second circulating water pump can be increased by stopping the operation of the first circulating water pump or by increasing the communication hole between the hot water chamber and the cooling water chamber to increase the exchange of hot and cold water. When the temperature is too high, the volume of the cooling water chamber is reduced, the connecting hole between the hot water chamber and the cooling water chamber is reduced by lowering the partition, and the flow of the first circulating water pump is increased, and the air volume of the fan of the cooling water tower is increased to improve the processing efficiency.

[0052] A temperature sensor is provided above the liquid level of the hot water chamber to monitor the temperature change of the cooling water discharged from the vacuum rehumidification machine, so as to facilitate the regulation of the circulation system.

[0053] A temperature sensor is arranged above the liquid level of the cooling water chamber to monitor the temperature of the cooling water chamber and cooperate with the temperature sensor at the inlet of the second circulating water pump to ensure the stability of the cooling water temperature entering the vacuum rehumidification machine.

[0054] In the technical solution of the present application, the temperature sensor, the first circulating water pump, the second circulating water pump, the horizontal motor and the vertical motor are electrically connected to the processor, and the processor is also electrically connected to the fan controller of the cooling water tower to achieve power regulation of the cooling water tower.

[0055] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. An energy-saving vacuum rehumidification machine cooling water circulation system, characterized in that: It includes a vacuum rehumidification machine, a cooling water tower, a first circulating water pump, a second circulating water pump, a cooling circulating water tank, a temperature sensor and a processor; A partition is provided in the cooling circulation water tank, the partition divides the cooling circulation water tank into a hot water chamber and a cooling water chamber which are connected at the bottom, the partition can move in the cooling circulation water tank, a hot water outlet is provided at the side of the hot water chamber, and a cooling water outlet is provided at the bottom of the cooling water chamber; The water outlet of the vacuum rehumidifier is connected to the top of the hot water chamber through a first pipeline; the hot water outlet on the side of the hot water chamber is connected to the inlet of the first circulating water pump through a second pipeline, and the outlet of the first circulating water pump is connected to the inlet of the cooling water tower through a third pipeline; The outlet of the cooling water tower is connected to the top of the cooling water chamber through the fourth pipeline; the cooling water outlet at the bottom of the cooling water chamber is connected to the inlet of the second circulating water pump through the fifth pipeline, and the outlet of the second circulating water pump is connected to the water inlet of the vacuum rehumidification machine through the sixth pipeline; Temperature sensors are provided at the inlet of the first circulating water pump, the inlet of the second circulating water pump, the hot water chamber and the cooling water chamber; the processor is respectively connected to the temperature sensor, the first circulating water pump and the second circulating water pump via electrical signals; The cooling circulating water tank comprises a cooling circulating water tank body, an upper horizontal track, a lower horizontal track, an upper transmission device, a lower transmission device, a horizontal motor, a vertical track, a vertical transmission device, a vertical motor and a partition; An upper horizontal track is arranged near the top of the inner side of the cooling circulating water tank body, and a lower horizontal track is arranged near the bottom; The upper transmission device is arranged on the upper horizontal track, the lower transmission device is arranged on the lower horizontal track, the horizontal motor is arranged on the cooling circulating water tank body, and the output shaft of the horizontal motor drives the upper transmission device and the lower transmission device to move synchronously at the same time; The upper end of the vertical track is connected to the upper transmission device, the lower end of the vertical track is connected to the lower transmission device, the vertical transmission device is installed on the vertical track, the output shaft of the vertical motor drives the vertical transmission device to move, and the partition is fixed on the vertical transmission device; The horizontal motor and the vertical motor are both connected to the processor by electrical signals; The hot water outlet is arranged at the middle position of the side wall of the cooling circulation water tank, and the outlet of the first pipeline above the hot water chamber is located above the liquid level.

2. The energy-saving vacuum rehumidification machine cooling water circulation system according to claim 1 is characterized in that: The partition can move in the up-down direction of the cooling circulation water tank, and can also move horizontally in the cooling circulation water tank.

3. The cooling water circulation system of the energy-saving vacuum rehumidification machine according to claim 1 is characterized in that: The partition is disposed between an outlet portion of the first pipeline and an outlet portion of the fourth pipeline.

4. The cooling water circulation system of the energy-saving vacuum rehumidification machine according to claim 1 is characterized in that: A fan is arranged in the cooling water tower, and the fan is controlled by a fan controller, and the fan controller is connected with the processor by electrical signals.

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