Water for injection refers to water that complies with the provisions of the Chinese Pharmacopoeia for water for injection. Water for injection is distilled or deionized water, so it is also weighed. In order to effectively control microbial contamination and control bacterial endotoxin levels, the design and manufacture of purified water and water for injection systems have two major features. One is the increasing use of disinfection / sterilization facilities in the system; The system evolved from a traditional water supply line to a circulation line. [0003] The preparation, storage and distribution of water for injection should prevent the growth and contamination of microorganisms. Materials used in storage tanks and pipelines should be non-toxic and resistant to corrosion. The design and installation of pipelines should avoid dead ends and blind pipes. Storage tanks and pipes should be cleaned and sterilized. The vent of the water injection tank should be installed with a hydrophobic bacteria-removing filter that does not shed fibers. Water for injection can be stored at a temperature above 80 ° C, a thermal insulation cycle above 70 ° C, or below 4 ° C. Water for injection system is composed of water treatment equipment, storage equipment, distribution pump and pipe network. The water system has the possibility of external pollution caused by the raw water and external causes of the water system, and the pollution of the raw water is the most important external pollution source of the water system. The US Pharmacopoeia, European Pharmacopoeia, and Chinese Pharmacopoeia all clearly require that raw water for pharmaceutical water meet at least the quality standards for drinking water. If the drinking water standard is not reached, pre-purification measures must be taken first. Because E. coli is a sign of obvious water pollution, there are clear international requirements for E. coli in drinking water. Other polluting bacteria are not subdivided. In the standard, the total number of bacteria is expressed. The limit of the total number of bacteria in China is 100 / ml, which indicates that there is also microbial pollution in the raw water that meets the drinking water standard, which endangers the water system The main contaminating bacteria are Gram-negative bacteria. Others, such as the tank's exhaust port without protection measures or the use of inferior gas filters, water backflow from the polluted outlet can also cause external pollution. In addition, there is internal pollution during the preparation and operation of the water system. Internal pollution is closely related to the design, material selection, operation, maintenance, storage, and use of water pollution systems. Various water treatment equipment may become an internal pollution source of microorganisms. For example, microorganisms in raw water are adsorbed on the surfaces of activated carbon, deionized resin, filter membranes and other equipment to form biofilms. Microorganisms living in biofilms are affected by biofilms. Protection, general disinfectants have no effect on it. Another source of pollution is in the distribution system. Microorganisms can form colonies on the surface of pipes, valves and other areas and multiply there, forming biofilms, thus becoming a persistent source of pollution. Therefore, there must be more stringent standards for the design of water production systems.
SUMMARY OF THE INVENTION The object of the present invention is to provide an automatic water injection preparation system to solve the technical problems that the existing water injection equipment does not meet national standards, has large pollution sources, unqualified quality, and is prone to breed bacteria. In order to solve the above technical problems, the technical solution of the present utility model is an automatic preparation system for water for injection, which includes a water pump, a condenser, a distillation tower, and a PLC controller. The distillation tower includes a shell and a heat exchanger. The heat exchanger shell is surrounded, the top of the heat exchanger shell is provided with a raw water inlet, the water inlet pipe of the water pump is connected to the tap water pipe, the water outlet pipe of the water pump is connected to the raw water inlet through the condenser, and the shell and the heat exchanger constitute The upper end of the steam generating chamber is provided with a secondary steam outlet pipe, which is connected to the top of the condenser, and the bottom of the steam generating chamber is provided with a condensate outlet, which is connected to the top of the condenser; the heat exchanger An upper circular plate is provided in the upper part of the casing, and a lower circular plate is provided in the lower portion of the heat exchanger casing. The closed heating cavity formed by the upper circular plate and the lower circular plate is connected to the heating steam pipe, and is passed between the upper and lower circular plates. A water pipe is arranged, and the water pipe is in communication with the steam generating chamber; the bottom of the condenser is connected with a distilled water outlet pipe, and the distilled water outlet pipe is provided with a conductivity probe, a temperature probe, the conductivity probe, and a temperature probe. The probe is connected to the controller PLC, PLC controller and inverter input terminal is connected to the output of the motor drive is connected to the pump. Preferably, the center of the lower circular plate is connected with a heated steam condensation pipe passing through the bottom of the casing. Preferably, a centrifugal separation plate surrounds the middle of the heat exchanger housing in a spiral manner. The utility model has the characteristics of novel novelty, complete technology, stability and high efficiency. It uses high-temperature distillation and high-temperature steam to distill the water source, and then repeats the distillation several times. Specification of indicators.
The technical scheme of the utility model will be further specifically described. 1 is a schematic structural diagram of the present utility model; FIG. 2 is a block diagram of the structural circuit of the present utility model; FIG. 3 is a schematic structural diagram of a distillation column in the present utility model; and FIG. 4 is a schematic structural diagram of an upper circular plate in FIG. It can be known from FIG. 1 in combination with FIGS. 2, 3 and 4 that the automatic water injection preparation system is mainly composed of a motor 1, a pump 2, a condenser 3, a distillation tower 4, a PLC controller 5, and the like. The distillation column 4 includes a shell 41 and a heat exchanger 42. The shell 41 surrounds the heat exchanger shell 43. The top of the heat exchanger shell 43 is provided with a raw water inlet 44; the middle part of the heat exchanger shell 43 is spirally surrounded. There are centrifuge plates 47. The water inlet pipe 21 of the water pump 2 is connected to the tap water pipe, the water outlet pipe 22 of the water pump 2 is connected to the raw water inlet, and the upper end of the steam generation chamber 6 formed between the casing 41 and the heat exchanger 42 is provided with a secondary steam outlet pipe 61. The secondary steam outlet pipe 61 is connected to the top of the condenser 3. A condensed water outlet 62 is provided at the bottom of the steam generating chamber 6, and the condensed water outlet 62 is connected to the top of the condenser 3. An upper circular plate 45 is provided in the upper part of the heat exchanger casing 43, and a lower circular plate 46 is provided in the lower part of the heat exchanger casing 43. The center of the lower circular plate 46 is connected to the heating steam condensing pipe 11 passing through the bottom of the casing. . The closed heating cavity 48 formed by the upper circular plate 45 and the lower circular plate 46 is connected to the heating steam pipe 12. A water passing pipe 13 is passed between the upper and lower circular plates (45, 46), and the water passing pipe 13 communicates with the steam generating chamber 6. The bottom of the condenser 3 is connected to a distilled water outlet pipe 31. The distilled water outlet pipe 31 is provided with a conductivity probe 32 and a temperature probe 33. The conductivity probe 32 and the temperature probe 33 are connected to a PLC controller 5, and the PLC controller 5 is connected to a frequency converter. The input terminal 52 of the converter 51 is connected, and the output terminal 53 of the inverter 51 is connected to the motor I on the water pump 2. During operation, the pump 2 is controlled to pump water through the motor I, and then enters the distillation tower 4 from the raw water inlet 44 through the condenser 3, while the heating steam enters the closed heating cavity 48 of the distillation tower 4 from the heating steam pipe 12 to heat the water flowing through the water pipe 13. Raw water. Part of the raw water becomes water vapor and is sent out by the secondary steam outlet pipe 61 and enters the condenser 3; the other part of the raw water is cooled by the shell of the steam generating chamber 6 to form distilled water; the remaining condensed water is discharged from the condenser pipe 11. After coming out of the condensed water outlet 62, it is conveyed into the condenser 3. The distilled water that finally enters the condenser is output by the distilled water outlet pipe 31, and then conducts the conductivity and temperature detection through the conductivity probe 32 and temperature probe 33, then passes through the two-position three-way switching valve, and finally transmits the data to the PLC controller 5 . The PLC controller 5 controls the two-position three-way switching valve to divert qualified distilled water and unqualified distilled water, and then output through different outlets.
Claim 1. An automatic preparation system for water for injection, comprising a water pump, a condenser, a distillation tower, and a PLC controller, characterized in that the distillation tower includes a shell and a heat exchanger, and the shell surrounds the shell of the heat exchanger The top of the heat exchanger housing is provided with a raw water inlet. The water inlet pipe of the water pump is connected to the tap water pipe. The outlet pipe of the water pump is connected to the raw water inlet through the condenser. The upper end of the steam generating cavity formed between the shell and the heat exchanger is provided. There is a secondary steam outlet pipe, which is connected to the top of the condenser, and a condensed water outlet is provided at the bottom of the steam generating chamber, and the condensed water outlet is connected to the top of the condenser; The upper circular plate and the lower part inside the heat exchanger shell are provided with a lower circular plate. The closed heating cavity formed by the upper circular plate and the lower circular plate is connected to the heating steam pipe. A water pipe is inserted between the upper and lower circular plates. The water passing pipe is in communication with the steam generating cavity; the bottom of the condenser is connected with a distilled water outlet pipe, and the distilled water outlet pipe is provided with a conductivity probe and a temperature probe, and the conductivity probe and the temperature probe are connected with a PLC controller, PLC The controller is connected to the input of the inverter, and the output of the inverter is connected to the motor on the water pump.
The automatic preparation system for water for injection according to claim 1, characterized in that the center of the lower circular plate is connected with a heating steam condensation pipe passing through the bottom of the casing.
The automatic preparation system for water for injection according to claim 1, characterized in that the middle part of the heat exchanger shell is surrounded by a centrifugal separation plate in a spiral manner.
Patent Abstract An automatic preparation system for water for injection includes a water pump, a condenser, a distillation tower, and a PLC controller. The distillation tower includes a shell and a heat exchanger. The shell surrounds a heat exchanger shell, and the heat exchanger shell The top of the body is provided with a raw water inlet. The inlet pipe of the water pump is connected to the tap water pipe. The outlet pipe of the water pump is connected to the raw water inlet through the condenser. The upper end of the steam generating cavity formed between the shell and the heat exchanger is provided with a secondary steam outlet. The secondary steam outlet pipe is connected to the top of the condenser. The bottom of the steam generating chamber is provided with a condensed water outlet, and the condensed water outlet is connected to the top of the condenser. The utility model has the characteristics of novel novelty, complete technology, stability and high efficiency. It uses high temperature distillation, high temperature steam to distill the water source, and then repeats the distillation several times. The water quality for injection water produced by this method is stable, high purity, and the bacterial endotoxin water quality meets the quality of water for injection in the Pharmacopoeia of the People's Republic of China. Specification of indicators.
