Thermal disinfection equipment with rapid cooling function

Abstract

Thermal disinfection equipment with a rapid cooling function relates to the technical field of thermal disinfection equipment, is connected between a water return pipeline and a pure water pipeline of hemodialysis water production equipment and a dialysis use point, and comprises an electric three-way valve A on the water return pipeline and an electric three-way valve B on the pure water pipeline, and a disinfection pipeline is connected between the electric three-way valve A and the electric three-way valve B; a hot water pump, a flow switch, an electromagnetic heating device and a temperature switch are sequentially arranged on the disinfection pipeline. An opposite flushing pipeline is connected between the disinfection pipeline close to one side of the electric three-way valve B and the pure water pipeline close to one side of the hemodialysis water production equipment, an electric ball valve A, a check valve, a stop valve and an electric ball valve B are arranged on the opposite flushing pipeline, and a drainage pipeline is connected to the opposite flushing pipeline between the electric ball valve A and the check valve. According to the thermal disinfection equipment, a traditional heating water tank is abandoned, bacteria and endotoxin breeding is inhibited, secondary pollution is eradicated, rapid cooling is achieved through valve switching and cold and hot water opposite flushing, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal disinfection equipment, in particular to a thermal disinfection equipment with a rapid cooling function. Background Art

[0002] The disinfection of hemodialysis water production equipment pipelines mainly adopts chemical disinfection and thermal disinfection to control the bacteria and microorganisms in the pure water pipelines. Chemical disinfection has the risk of chemical disinfectant residues, and the operation is cumbersome, requiring manual supervision throughout the process, and requires a large amount of pure water flushing. Hot water disinfection is currently the most respected water treatment system disinfection method in the world. The system runs automatically without the need for special operation. It has a better effect on controlling the colonies and endotoxins in the pipeline. It is mainly divided into electromagnetic heating and resistance heating. The existing thermal disinfection equipment has the following main disadvantages:

[0003] (1) Hot water is generally not allowed to be discharged directly on site. It needs to be cooled before being discharged, and the natural cooling time is long;

[0004] (2) Traditional resistance heating is large in size, high in energy consumption, and low in safety;

[0005] (3) The electromagnetic heating equipment is connected in series with the hemodialysis water production equipment. The water supplied by the hemodialysis water production equipment passes through the electromagnetic heating device. The maintenance of the electromagnetic heating device affects the hemodialysis water production.

[0006] (4) Generally, thermal disinfection equipment contains a heating water tank, which has large heat loss, is prone to breeding bacteria when not performing disinfection, and is large in size. Utility Model Content

[0007] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and to provide a thermal disinfection device with a rapid cooling function. The thermal disinfection device of the utility model abandons the traditional heating water tank, inhibits the growth of bacteria and endotoxins, and eliminates secondary pollution. The design without a hot water tank greatly reduces the energy consumption of each thermal disinfection and reduces costs. By switching valves and utilizing hot and cold water to flush, rapid cooling can be achieved and time can be saved.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] A heat disinfection device with a fast cooling function is connected between the return water pipeline and the pure water pipeline of the hemodialysis water production device and the dialysis use point. It includes an electric three-way valve A on the return water pipeline and an electric three-way valve B on the pure water pipeline. A disinfection pipeline is connected between the electric three-way valve A and the electric three-way valve B. A hot water pump, a flow switch, an electromagnetic heating device and a temperature switch are sequentially arranged on the disinfection pipeline. A counterflush pipeline is connected between the disinfection pipeline near the electric three-way valve B and the pure water pipeline near the hemodialysis water production device. An electric ball valve A, a check valve, a globe valve and an electric ball valve B are sequentially arranged on the counterflush pipeline. A drainage pipeline is connected to the counterflush pipeline between the electric ball valve A and the check valve. The electromagnetic heating device is vertically installed, and the water flow is from bottom to top, using the eddy current generated by the electromagnetic field in the metal pipeline part to heat the internal water flow.

[0010] Preferably, a temperature transmitter is arranged on the disinfection pipeline between the electric three-way valve A and the hot water pump, and a pressure transmitter is arranged on the disinfection pipeline between the hot water pump and the flow switch.

[0011] Preferably, a mechanical thermometer is arranged on the disinfection pipeline behind the temperature switch.

[0012] Preferably, a pressure relief pipeline is connected to the disinfection pipeline behind the mechanical thermometer, and a pressure relief safety valve is arranged on the pressure relief pipeline. During the heat disinfection of the pipeline, the temperature rises, and the pressure in the pipeline becomes higher and higher. When the pressure exceeds 5 bar, it will damage the inlet solenoid valve of the dialysis machine. Therefore, when the pressure in the pipeline exceeds 4 bar, the pressure relief safety valve automatically opens to discharge water vapor and achieve the effect of pressure reduction.

[0013] Preferably, the pressure relief pipeline is located at the high position of the disinfection pipeline.

[0014] Preferably, the pressure relief port of the pressure relief pipeline is connected to a stainless steel water storage box. Directly discharging water vapor into the sink has safety risks, so it is discharged into a special stainless steel water storage box.

[0015] Preferably, a pressure gauge A is arranged on the disinfection pipeline between the electric three-way valve A and the temperature transmitter, and a pressure gauge B is arranged on the disinfection pipeline between the pressure transmitter and the flow switch.

[0016] Preferably, a pressure gauge C is arranged on the disinfection pipeline between the mechanical thermometer and the pressure relief pipeline.

[0017] Preferably, a pressure gauge D is arranged on the counterflush pipeline near the pure water pipeline side.

[0018] Preferably, the electric three-way valve A and the electric three-way valve B adopt an internal installation structure to avoid incorrect connection on site.

[0019] The advantages of the present utility model are as follows: 1. Abandoning the traditional heating water tank can inhibit the growth of bacteria and endotoxins, prevent secondary pollution, and the design without a hot water tank greatly reduces the energy consumption of each heat disinfection, thus reducing costs.

[0020] 2. Using electromagnetic heating, the disinfection temperature can be set between 85 - 121°C, with rapid heating and more precise temperature control, enabling high-frequency preventive disinfection. High-temperature disinfection at 121°C can effectively kill spore bacteria, ensuring the sterilization effect.

[0021] 3. Electromagnetic heating does not come into direct contact with water, avoiding secondary pollution of pure water and reducing the risk of microbial growth. There is no risk of scalding when touching the outer surface of the heating load during the heating process. Compared with resistance heating, it has low energy consumption, high safety, more precise temperature control, and a long service life.

[0022] 4. Through valve switching, the use of cold and hot water flushing can achieve rapid cooling, saving time.

[0023] 5. An electric three-way valve is built-in to avoid incorrect on-site connection. The heat disinfection equipment module is independent, small in size, and convenient to move, and can be freely selected according to customer needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a system schematic diagram of the present utility model.

[0025] Description of the main component symbols in the figure:

[0026] 101, hemodialysis water production equipment; 102, dialysis use point;

[0027] 201, return water pipeline; 202, pure water pipeline; 203, disinfection pipeline; 204, flushing pipeline; 205, drainage pipeline; 206, pressure relief pipeline;

[0028] 301, electric three-way valve A; 302, electric three-way valve B; 303, hot water pump; 304, flow switch; 305, electromagnetic heating device; 306, temperature switch; 307, electric ball valve A; 308, check valve; 309, globe valve; 310, electric ball valve B; 311, temperature transmitter; 312, pressure transmitter; 313, mechanical thermometer; 314, pressure relief safety valve; 315, pressure gauge A; 316, pressure gauge B; 317, pressure gauge C; 318, pressure gauge D. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to describe the present utility model more clearly, the present utility model will be further described below with reference to the accompanying drawings.

[0030] Embodiment 1: As Figure 1As shown in the figure, a heat disinfection device with a rapid cooling function is connected between the return water pipeline 201 and the pure water pipeline 202 of the hemodialysis water production device 101 and the dialysis use point 102. It includes an electric three-way valve A301 on the return water pipeline 201 and an electric three-way valve B302 on the pure water pipeline 202. A disinfection pipeline 203 is connected between the electric three-way valve A301 and the electric three-way valve B302. A hot water pump 303, a flow switch 304, an electromagnetic heating device 305 and a temperature switch 306 are sequentially arranged on the disinfection pipeline 203.

[0031] A counterflush pipeline 204 is connected between the disinfection pipeline 203 on the side close to the electric three-way valve B302 and the pure water pipeline 202 on the side close to the hemodialysis water production device 101. An electric ball valve A307, a check valve 308, a globe valve 309 and an electric ball valve B310 are sequentially arranged on the counterflush pipeline 204. A drain pipeline 205 is connected to the counterflush pipeline 204 between the electric ball valve A307 and the check valve 308.

[0032] Among them, the electric three-way valve A301 and the electric three-way valve B302 adopt a built-in installation structure.

[0033] Embodiment 2: As Figure 1 shown, on the basis of Embodiment 1, a temperature transmitter 311 is arranged on the disinfection pipeline 203 between the electric three-way valve A301 and the hot water pump 303, and a pressure transmitter 312 is arranged on the disinfection pipeline 203 between the hot water pump 303 and the flow switch 304.

[0034] Among them, a mechanical thermometer 313 is arranged on the disinfection pipeline 203 behind the temperature switch 306.

[0035] Embodiment 3: As Figure 1 shown, on the basis of Embodiment 2, a pressure relief pipeline 206 is connected to the disinfection pipeline 203 behind the mechanical thermometer 313, and a pressure relief safety valve 314 is arranged on the pressure relief pipeline 206.

[0036] Among them, the pressure relief pipeline 206 is located at a high position of the disinfection pipeline 203, and the pressure relief port of the pressure relief pipeline 206 is connected to a stainless steel water storage box and is not connected to the drain port of the drain pipeline 205.

[0037] Embodiment 4: As Figure 1As shown, on the basis of Embodiment 3, a pressure gauge A315 is provided on the disinfection pipeline 203 between the electric three-way valve A301 and the temperature transmitter 311, a pressure gauge B316 is provided on the disinfection pipeline 203 between the pressure transmitter 312 and the flow switch 304, and a pressure gauge C317 is provided on the disinfection pipeline 203 between the mechanical thermometer 313 and the pressure relief pipeline 206. A pressure gauge D318 is provided on the counterflush pipeline 204 near the pure water pipeline 202 side.

[0038] The specific hot disinfection working method is as follows:

[0039] (1) Feed pure water: Open the electric three-way valve A301 and the electric ball valve A307. After receiving the signal for 5 s (the electric three-way valve A301 switches to the ON-1 state), the hemodialysis water treatment device 101 is started. The pure water passes through the hot disinfection device to expel the air in the disinfection pipeline 203. The water inlet lasts for 60 s (can be set), then the hemodialysis water treatment device 101 is turned off, and the electric ball valve A307 is closed after a 3 s delay. The electric three-way valve A301 remains unchanged.

[0040] (2) Heating: Open the electric three-way valve B302. After receiving the signal for 5 s (the electric three-way valve B302 switches to the ON-1 state), start the hot water pump 303. After 15 s, start the electromagnetic heating device 305.

[0041] (3) Heat preservation:

[0042] A. Heat to the set temperature of 85 °C, keep warm for 20 min, and have hot water circulation;

[0043] B. Heat to the set temperature of 121 °C and keep warm for 0 min.

[0044] (4) Cooling:

[0045] A. After the heat preservation at 85 °C ends, enter the cold and hot water counterflush cooling mode. Open the electric ball valve B310. After 3 s, start the hemodialysis water treatment device 101. After the hemodialysis water treatment device 101 is started, open the electric ball valve A307 after 90 s. The electric three-way valve B302 switches to the ON-0 state, and the electric three-way valve A301 remains in the ON-1 state. The hot water pump 303 is not started. Cool down to 45 °C, then close the electric ball valve B310, and keep the other valves unchanged. The hemodialysis pure water continues to be pushed until the temperature of the circulation pipeline drops to 37 °C (can be set), and then the disinfection ends.

[0046] B. Heat up to 121°C, stop heating, start the hot water pump 303 to circulate until 95°C, start the cold and hot water counterflow cooling mode, open the electric ball valve B310, start the hemodialysis water treatment equipment 101 after 3s, open the electric ball valve A307 90s after the hemodialysis water treatment equipment 101 is started, turn the electric three-way valve B302 to the ON-0 state, keep the electric three-way valve A301 in the ON-1 state, and do not start the hot water pump 303. Cool down to 45°C, close the electric ball valve B310, keep the other valves unchanged, and continue to push the hemodialysis pure water until the temperature of the circulation pipeline drops to 37°C (can be set), and then the disinfection ends.

[0047] The above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. The present invention can be used for similar products, and any changes or modifications made by any person skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A thermal disinfection device with rapid cooling function, characterized in that: Connected between the return water pipeline (201) and the pure water pipeline (202) of the hemodialysis water preparation equipment (101) and the dialysis use point (102), comprising an electric three-way valve A (301) on the return water pipeline (201) and an electric three-way valve B (302) on the pure water pipeline (202), a disinfection pipeline (203) connected between the electric three-way valve A (301) and the electric three-way valve B (302), and a hot water pump (303), a flow switch (304), an electromagnetic heating device (305) and a temperature switch (306) are sequentially arranged on the disinfection pipeline (203); A counter-pipeline (204) is connected between the disinfection pipeline (203) on the side close to the electric three-way valve B (302) and the pure water pipeline (202) on the side close to the hemodialysis water preparation equipment (101). An electric ball valve A (307), a check valve (308), a stop valve (309) and an electric ball valve B (310) are sequentially arranged on the counter-pipeline (204). A drainage pipeline (205) is connected to the counter-pipeline (204) between the electric ball valve A (307) and the check valve (308).

2. A thermal disinfection device with rapid cooling function according to claim 1, characterized in that: A temperature transmitter (311) is provided on the disinfection pipeline (203) between the electric three-way valve A (301) and the hot water pump (303), and a pressure transmitter (312) is provided on the disinfection pipeline (203) between the hot water pump (303) and the flow switch (304).

3. A thermal disinfection device with rapid cooling function according to claim 1, characterized in that: A mechanical thermometer (313) is provided on the disinfection pipeline (203) at the rear side of the temperature switch (306).

4. A thermal disinfection device with rapid cooling function according to claim 3, characterized in that: A pressure relief pipeline (206) is connected to the disinfection pipeline (203) at the rear side of the mechanical thermometer (313), and a pressure relief safety valve (314) is provided on the pressure relief pipeline (206).

5. A thermal disinfection device with rapid cooling function according to claim 4, characterized in that: The pressure relief pipeline (206) is located at a high position of the disinfection pipeline (203).

6. A thermal disinfection device with rapid cooling function according to claim 5, characterized in that: The pressure relief port of the pressure relief pipeline (206) is connected to the stainless steel water storage box.

7. A thermal disinfection device with rapid cooling function according to claim 2, characterized in that: A pressure gauge A (315) is provided on the disinfection pipeline (203) between the electric three-way valve A (301) and the temperature transmitter (311), and a pressure gauge B (316) is provided on the disinfection pipeline (203) between the pressure transmitter (312) and the flow switch (304).

8. A thermal disinfection device with rapid cooling function according to claim 4, characterized in that: A pressure gauge C (317) is provided on the disinfection pipeline (203) between the mechanical thermometer (313) and the pressure relief pipeline (206).

9. A thermal disinfection device with rapid cooling function according to claim 1, characterized in that: A pressure gauge D (318) is provided on the counter-pipeline (204) close to the pure water pipeline (202).

10. A thermal disinfection device with rapid cooling function according to any one of claims 1 to 9, characterized in that: The electric three-way valve A (301) and the electric three-way valve B (302) adopt a built-in installation structure.

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