Vacuum system device for amino glycerol crystallization process

Abstract

The utility model discloses a vacuum system device for an aminoglycerol crystallization process, which belongs to the technical field of water jet type centrifugal pumps and heat exchanger equipment and comprises a crystallization kettle, a vacuum water tank, a centrifugal pump, a condenser and a circulating water tank. The crystallization kettle is communicated with one side of the vacuum water tank, the output end of the centrifugal pump is communicated with one side of the vacuum water tank, one side of the vacuum water tank is communicated with one side of the condenser, one side of the condenser is communicated with one side of the circulating water tank, and the condenser is used for condensing condensate water in the vacuum water tank. When a certain centrifugal pump breaks down, operation of the whole system cannot be affected, the condenser conducts heat exchange and cooling on water in the centrifugal pump and the circulating water tank, so that the vacuum degree of the crystallization kettle at the using end is always kept in a high-vacuum state, and the vacuum degree cannot be reduced along with increase of the working time of the centrifugal pump.

Description

Technical Field

[0001] The utility model belongs to the technical field of water jet centrifugal pumps and heat exchanger equipment, and more specifically relates to a vacuum system device for an aminoglycerol crystallization process. Background Art

[0002] The water jet vacuum pump sprays the working medium water with a certain pressure into the suction chamber through the nozzle at high speed, converting the pressure energy of the water into kinetic energy to form a high-speed jet. The gas in the suction chamber is forced to be carried by the high-speed jet and mixed with it to form a gas-liquid mixed flow, which enters the diffuser, thereby reducing the pressure in the suction chamber and forming a vacuum. In the expansion section of the diffuser, the kinetic energy of the mixed jet is converted into pressure energy, the speed is reduced and the pressure is increased, the gas is further compressed, and discharged out of the pump together with the water. The gas and water are separated in the water tank, the gas is released into the atmosphere, and the water is recycled by the water pump, and the purpose of vacuuming is achieved over and over again.

[0003] Since the water jet vacuum pumps currently on the market all use the above principle, the hot air generated by the terminal equipment is sucked in through the vacuum pipe and heat exchanged with the cold water in the water tank. At the same time, the water jet vacuum pumps themselves generate heat during operation as the working time increases, and heat exchange is carried out with the cold water in the water tank. This causes the water temperature in the water tank to increase as the working time increases, the vacuum degree decreases accordingly, and the working efficiency (heat exchange rate) decreases. If a stable high vacuum degree of the vacuum system is to be maintained, cold water must be continuously added to the water tank during the operation of the vacuum pump. When the water level in the water tank exceeds the overflow port, it will overflow to the outside, causing a waste of water resources.

[0004] Therefore, how to provide a vacuum system device for the aminoglycerol crystallization process is a problem that technicians in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model provides a vacuum system device for the aminoglycerol crystallization process. The failure of a centrifugal pump will not affect the operation of the entire system. The condenser performs heat exchange and cooling between the centrifugal pump and the water in the circulating water tank to ensure that the vacuum degree of the crystallization kettle at the use end is always maintained at a high vacuum state, and the vacuum degree will not decrease with the increase of the working time of the centrifugal pump.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A vacuum system device for an aminoglycerol crystallization process comprises: a crystallization kettle, a vacuum water tank, a centrifugal pump, a condenser and a circulating water tank; the crystallization kettle is connected to one side of the vacuum water tank, the output end of the centrifugal pump is connected to one side of the vacuum water tank, one side of the vacuum water tank is connected to one side of the condenser, one side of the condenser is connected to one side of the circulating water tank, the condenser is used to condense condensed water inside the vacuum water tank, and one side of the vacuum water tank is connected to the circulating water tank.

[0008] Furthermore, a first electric valve is installed on the pipeline connecting the vacuum water tank and the circulating water tank.

[0009] Furthermore, a second electric valve is installed on the pipeline connecting the vacuum water tank and the centrifugal pump, a third electric valve is installed on the pipeline connecting the crystallization kettle and the vacuum water tank, a fourth electric valve is installed on the pipeline connecting the vacuum water tank and the condenser, and a fifth electric valve is installed on the pipeline connecting the condenser and the circulating water tank.

[0010] Furthermore, the crystallization kettle, vacuum water tank and centrifugal pump are provided in multiple groups, and the pipeline connecting one group of crystallization kettles and vacuum water tanks is interconnected with the pipeline connecting another group of crystallization kettles and vacuum water tanks, and the sixth electric valve is installed on the interconnected pipelines.

[0011] Furthermore, the centrifugal pump, the condenser, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve and the first electric valve are all electrically connected to the controller.

[0012] Furthermore, thermometers are installed on the condenser and the circulating water tank.

[0013] Furthermore, a liquid level meter is installed on the circulating water tank.

[0014] The beneficial effects of the utility model are:

[0015] The utility model has a simple structure and is easy to use. The upper and lower temperature limits of the condenser and the circulating water tank are set through the controller. When the water temperature in the circulating water tank rises to the upper temperature limit, the controller controls the condenser to start working and cools down the circulating water in the circulating water tank. When the circulating water temperature in the circulating water tank is about to reach the lower temperature limit, the controller controls the condenser to stop working and maintain the centrifugal pump to provide a stable high vacuum degree to the user terminal, thereby ensuring the stability of production efficiency. As a result, if a centrifugal pump of the utility model fails, it will not affect the operation of the entire system. The condenser performs heat exchange and cooling on the water in the centrifugal pump and the circulating water tank to ensure that the vacuum degree of the crystallization kettle at the user end is always maintained in a high vacuum state, and the vacuum degree will not decrease with the increase in the working time of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 The accompanying drawing is a schematic structural diagram of the utility model.

[0018] Among them, in the figure:

[0019] 1-crystallization kettle; 2-vacuum water tank; 3-centrifugal pump; 4-condenser; 5-circulating water tank; 6-second electric valve; 7-third electric valve; 8-fourth electric valve; 9-fifth electric valve; 10-first electric valve; 11-sixth electric valve. DETAILED DESCRIPTION

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

[0021] Please refer to the attached Figure 1 The utility model provides a vacuum system device for an aminoglycerol crystallization process, comprising: a crystallization kettle 1, a vacuum water tank 2, a centrifugal pump 3, a condenser 4 and a circulating water tank 5; the crystallization kettle 1 is communicated with one side of the vacuum water tank 2, the output end of the centrifugal pump 3 is communicated with one side of the vacuum water tank 2, one side of the vacuum water tank 2 is communicated with one side of the condenser 4, one side of the condenser 4 is communicated with one side of the circulating water tank 5, the condenser 4 is used to condense condensed water inside the vacuum water tank 2, one side of the vacuum water tank 2 is communicated with the circulating water tank 5, and a refrigerator is also installed on the pipeline connecting the condenser 4 and the circulating water tank 5.

[0022] A first electric valve 10 is installed on the pipeline connecting the vacuum water tank 2 and the circulating water tank 5 .

[0023] A second electric valve 6 is installed on the pipeline connecting the vacuum water tank 2 and the centrifugal pump 3, a third electric valve 7 is installed on the pipeline connecting the crystallization kettle 1 and the vacuum water tank 2, a fourth electric valve 8 is installed on the pipeline connecting the vacuum water tank 2 and the condenser 4, and a fifth electric valve 9 is installed on the pipeline connecting the condenser 4 and the circulating water tank 5.

[0024] The crystallization kettle 1, vacuum water tank 2 and centrifugal pump 3 are all provided with multiple groups. The pipelines connecting one group of crystallization kettle 1 and vacuum water tank 2 are interconnected with the pipelines connecting another group of crystallization kettle 1 and vacuum water tank 2, and the sixth electric valve 11 is installed on the interconnected pipelines. The preferred technical scheme of the utility model adopts the parallel joint installation technology of three water-jet centrifugal pumps 3, sharing a condenser 4 and a circulating water tank 5. The space occupied by the installation of one centrifugal pump 3 is one-third of the space occupied by the original three centrifugal pumps 3, but the working efficiency is three times that of the original one centrifugal pump 3. Among them, the centrifugal pumps 3 all adopt frequency conversion control, which can be used individually or in combination of 1-3 units. The maximum power is that three units run at full frequency at the same time, which can meet different production needs. If one of the centrifugal pumps 3 fails for maintenance, the other two can be enabled for use, so as not to affect production work.

[0025] The centrifugal pump 3 , the condenser 4 , the second electric valve 6 , the third electric valve 7 , the fourth electric valve 8 , the fifth electric valve 9 and the first electric valve 10 are all electrically connected to the controller.

[0026] The condenser 4 and the circulating water tank 5 are both equipped with thermometers. In another preferred embodiment, the controller controls the upper and lower limits of the temperature of the digital thermometer on the condenser 4 to be 25°C and 15°C, respectively, and the upper limit of the temperature of the circulating water tank 5 is set to 25°C. When the water temperature in the circulating water tank 5 rises to 25°C, the command is input to the controller through a signal, and the valve on the refrigerator pipe is opened by the controller, and the condenser 4 is started to work, and the circulating water in the circulating water tank 5 is cooled. When the temperature of the circulating water is about to reach 15°C, the valve on the refrigerator pipe is closed, and the cooling is stopped to form a cycle, and automatic control is performed to maintain the centrifugal pump 3 to provide a stable high vacuum degree to the user terminal, thereby ensuring the stability of production efficiency and the safety and reliability of product quality, and preventing a series of unsafe factors caused by the high and low vacuum degree.

[0027] The circulating water tank 5 is equipped with a liquid level meter, which is also connected to an external water source and is opened and closed by a valve. During the production process, a certain amount of water in the circulating water tank 5 is lost. When the water level in the circulating water tank 5 is lower than the lower limit, a signal is transmitted to the controller to open the valve for water replenishment. When the water level reaches the upper limit, the valve is automatically closed and no water is replenished. The circulating water tank 5 of the utility model is a closed space (volume 2000mm*1200mm*1000mm=2.4m 3 ), so the loss of circulating water is very low. After testing, it is found that it takes about 30 days of continuous production before water is replenished through the φ25 pipe, and the water replenishment is 0.5m 3 , saving water resources. If the existing technology on the market is used, continuous replenishment of city water is used for cooling, and water is replenished through a φ25 pipe, the water consumption per hour is 9m 3 .

[0028] The utility model can be used as a single machine or in combination with multiple machines. According to the production situation of the end equipment, the crystallization kettle 1 and the centrifugal pump 3 can be used one-to-one, one-to-many or many-to-one, and can be switched freely through the controller. When the crystallization kettle 1 uses negative pressure to feed the kettle, one of the centrifugal pumps 3 can be enabled. When three crystallization kettles 1 work at the same time, the centrifugal pump 3 can be enabled to work one-to-one with the crystallization kettle 1. When a certain crystallization kettle 1 or two of the crystallization kettles 1 require high vacuum, three centrifugal pumps 3 can be selected to work simultaneously to improve production efficiency.

[0029] The controller in the utility model can adopt an intelligent control box (PC) and be associated with the workshop central control and the company's main control room, so as to realize remote automatic control operation and manual operation.

[0030] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum system device for aminoglycerol crystallization process, characterized in that: include: A crystallization kettle (1), a vacuum water tank (2), a centrifugal pump (3), a condenser (4) and a circulating water tank (5); the crystallization kettle (1) is in communication with one side of the vacuum water tank (2), the output end of the centrifugal pump (3) is in communication with one side of the vacuum water tank (2), one side of the vacuum water tank (2) is in communication with one side of the condenser (4), one side of the condenser (4) is in communication with one side of the circulating water tank (5), the condenser (4) is used to condense condensed water inside the vacuum water tank (2), and one side of the vacuum water tank (2) is in communication with the circulating water tank (5).

2. The aminoglycerol crystallization process vacuum system device according to claim 1, characterized in that: A first electric valve (10) is installed on the pipeline connecting the vacuum water tank (2) and the circulating water tank (5).

3. A vacuum system device for aminoglycerol crystallization process according to claim 2, characterized in that: A second electric valve (6) is installed on the pipeline connecting the vacuum water tank (2) and the centrifugal pump (3), a third electric valve (7) is installed on the pipeline connecting the crystallization kettle (1) and the vacuum water tank (2), a fourth electric valve (8) is installed on the pipeline connecting the vacuum water tank (2) and the condenser (4), and a fifth electric valve (9) is installed on the pipeline connecting the condenser (4) and the circulating water tank (5).

4. The aminoglycerol crystallization process vacuum system device according to claim 3, characterized in that: The crystallization kettle (1), the vacuum water tank (2) and the centrifugal pump (3) are each provided with a plurality of groups, and a pipeline connecting the crystallization kettle (1) and the vacuum water tank (2) in one group is interconnected with a pipeline connecting the crystallization kettle (1) and the vacuum water tank (2) in another group, and a sixth electric valve (11) is installed on the interconnected pipelines.

5. The aminoglycerol crystallization process vacuum system device according to claim 4, characterized in that: The centrifugal pump (3), the condenser (4), the second electric valve (6), the third electric valve (7), the fourth electric valve (8), the fifth electric valve (9) and the first electric valve (10) are all electrically connected to the controller.

6. The aminoglycerol crystallization process vacuum system device according to claim 1, characterized in that: The condenser (4) and the circulating water tank (5) are both equipped with thermometers.

7. The aminoglycerol crystallization process vacuum system device according to claim 1, characterized in that: A liquid level meter is installed on the circulating water tank (5).

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