A sewage purification device and purification method for fully automatic hemodialysis equipment

Abstract

The present invention discloses a sewage purification device for a fully automatic hemodialysis equipment and a purification method thereof, and relates to the technical field of medical equipment. The sewage purification device for the fully automatic hemodialysis equipment comprises: a liquid inlet degassing module, comprising: a first pipeline, the first pipeline is connected to a water tank, and a second pipeline is connected to the water tank and a degassing chamber. A sewage filtration module, comprising: a third pipeline, the third pipeline is connected to the degassing chamber and the sewage filter; a fourth pipeline, the fourth pipeline is connected to the sewage filter and the drainage pipeline; a disinfection module, comprising: a fifth pipeline, the fifth pipeline is connected to a disinfection pump; and a sixth pipeline, the sixth pipeline is connected to the disinfection pump and the water tank. The above-mentioned sewage purification device for the fully automatic hemodialysis equipment solves the technical problem that the existing hemodialysis equipment causes serious blockage and odor in the sewer after being used for a period of time. By purifying and filtering the waste liquid discharged from the hemodialysis equipment, organic substances such as protein and fat in the waste liquid are removed, thereby preventing blockage and odor in the sewer.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a sewage purification device for fully automatic hemodialysis equipment and a purification method thereof. Background Art

[0002] Currently, there are a huge number of hemodialysis patients. Each hemodialysis device treats at least two patients a day. During the treatment, a large amount of organic substances such as lipids and proteins are discharged and accumulated in the sewer. At present, some hemodialysis devices use citric acid heating for disinfection, which cannot remove organic substances. Some devices use sodium hypochlorite for disinfection, which brings organic substances out of the device and discharges them into the sewer during disinfection. However, no matter which disinfectant is used, the concentration after excluding the hemodialysis device is no longer able to effectively remove the organic substances in the sewer.

[0003] When the hemodialysis equipment performs dialysis treatment on patients, the equipment will discharge the waste liquid in real time. There are two existing ways of draining waste. One is to directly insert the waste liquid pipe of the hemodialysis equipment into the sewer pipe, and the other is to connect the hemodialysis sewer pipe to the drainage funnel through a quick connector, and the drainage funnel is connected to the sewer pipe. However, the waste liquid contains a large amount of protein, fat and other organic substances from the patient, which causes serious blockage and odor in the sewer after a period of use, affecting the normal operation of the department. Moreover, it is not easy to detect the blockage of the sewer, causing the waste liquid to overflow outside the equipment belt, greatly increasing the risk of hospital infection. Therefore, a fully automatic hemodialysis equipment sewage purification device and a purification method thereof are proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic sewage purification device for hemodialysis equipment and a purification method thereof, which solves the technical problem that the existing hemodialysis equipment causes serious blockage and odor in the sewer after being used for a period of time, affecting the normal operation of the department.

[0005] To achieve the above-mentioned object, the present invention provides a sewage purification device for a fully automatic hemodialysis equipment, comprising:

[0006] Liquid inlet degassing module, including:

[0007] a first pipeline, wherein a first end of the first pipeline is used to input waste liquid, and a second end of the first pipeline is connected to a water tank;

[0008] The second pipeline, the first end of the second pipeline is connected to the water tank, the second end of the second pipeline is connected to the degassing chamber, the degassing chamber is connected to the sewer, and the first filter, degassing valve, degassing pump and degassing pressure sensor are sequentially arranged in the second pipeline.

[0009] Sewage filtration module, including:

[0010] a third pipeline, wherein a first end of the third pipeline is connected to the degassing chamber, and a second end of the third pipeline is connected to the sewage filter;

[0011] a fourth pipeline, wherein a first end of the fourth pipeline is connected to the sewage filter, a second end of the fourth pipeline is connected to a drainage pipeline, and the drainage pipeline is connected to the sewer;

[0012] Disinfection module, including:

[0013] a fifth pipeline, wherein a first end of the fifth pipeline is used for inputting disinfectant, and a second end of the fifth pipeline is connected to a disinfection pump;

[0014] a sixth pipeline, wherein a first end of the sixth pipeline is connected to the disinfection pump, and a second end of the sixth pipeline is connected to the water tank;

[0015] a circulation pipeline, the circulation pipeline connecting the first pipeline and the drainage pipeline;

[0016] A control system is connected to the liquid inlet degassing module, the sewage filtration module and the disinfection module.

[0017] Preferably, an inlet valve, a pressure reducing valve and an inlet water pressure sensor are sequentially arranged in the first pipeline, an RO water inlet pipeline is arranged at the first end of the first pipeline, and an RO valve and a first one-way valve are sequentially arranged in the RO water inlet pipeline.

[0018] Preferably, the third pipeline is connected to the first air intake pipeline, and the first air intake pipeline is sequentially provided with a first air filter, an air solenoid valve, a second air filter and a second one-way valve.

[0019] Preferably, a mixing chamber, a conductivity sensor and a conductivity monitoring sensor are sequentially arranged in the third pipeline. The mixing chamber is used for mixing the disinfectant RO water. The conductivity sensor and the conductivity monitoring sensor are both used to monitor the conductivity of the waste liquid to determine whether the conductivity of the waste liquid is consistent with the corresponding standard value and whether the concentration of the disinfectant is within the corresponding standard value range.

[0020] Preferably, the control system includes: a communication layer, a main board layer and a base layer, the communication layer is connected to the main board layer, the main board layer is connected to the base layer, and the base layer is connected to the liquid inlet degassing module, the sewage filtration module and the disinfection module.

[0021] Accordingly, the technical solution of the present invention further provides a sewage purification method for a fully automatic hemodialysis equipment, which is applied to any of the sewage purification devices for the fully automatic hemodialysis equipment described above. The sewage purification method comprises:

[0022] The control system controls the entire device to start up and perform self-tests according to the set time to ensure the normal operation of the liquid inlet degassing module, the sewage filtration module and the disinfection module;

[0023] After the self-test of the entire device is completed, the control system controls the first pipeline to open, and the waste liquid output by the hemodialysis equipment enters the water tank through the first pipeline;

[0024] After the liquid level of the waste liquid in the water tank reaches a certain height, the second pipeline is controlled to be opened and the degassing pump is started at the same time. The waste liquid in the water tank is filtered by the filter and then enters the degassing valve. The flow rate of the waste liquid in the second pipeline is increased by contracting the flow restriction hole in the degassing valve. The gas in the waste liquid expands into bubbles and enters the degassing chamber along with the waste liquid. The bubbles in the degassing chamber are concentrated and discharged to the sewer.

[0025] After the gas in the waste liquid in the degassing chamber is discharged, the third pipeline and the fourth pipeline are controlled to be opened, and the waste liquid enters the sewage filter through the third pipeline. The waste liquid purified by the sewage filter enters the drainage pipeline and is discharged to the sewer through the drainage pipeline, thereby completing the treatment of the waste liquid;

[0026] After the hemodialysis equipment stops working, the control system controls the entire device to start the self-cleaning mode, and flushes, disinfects and empties each pipeline in the entire device in turn.

[0027] Preferably, the control system controls the entire device to start up and perform self-testing according to a set time, including the following steps:

[0028] Before RO water is input into each pipeline, and each pipeline in the whole device is connected to the atmosphere, the pressure detected in each pipeline is set to zero;

[0029] Input RO water into each pipeline, check whether the pressure value in each pipeline is within the standard value range, and check whether the sewage filter is blocked;

[0030] After the RO water fills the water tank and each pipe, the conductivity of the RO water is tested by the conductivity sensor and the conductivity monitoring sensor.

[0031] Preferably, the steps of flushing, disinfecting and emptying each pipeline in the entire device in sequence include:

[0032] The control system controls the entire device to start the self-cleaning mode;

[0033] The control system controls the first pipeline to open, and RO water enters the water tank through the first pipeline. After the liquid level of the RO water in the water tank reaches a certain height, the control system controls the second pipeline to open and simultaneously starts the degassing pump. The RO water in the water tank is filtered by the first filter and then enters the degassing valve. The flow rate of the RO water in the second pipeline is increased by contraction through the flow restriction hole in the degassing valve. The gas in the RO water expands into bubbles and enters the degassing chamber along with the RO water. The bubbles in the degassing chamber are discharged to the sewer.

[0034] After the gas in the RO water in the degassing chamber is discharged, the third pipeline and the fourth pipeline are controlled to open, and the RO water flushes the sewage filter through the third pipeline. After flushing the sewage filter, the RO water enters the drainage pipeline and is discharged to the sewer through the drainage pipeline, completing the flushing of each pipeline in the entire device.

[0035] Preferably, the steps of flushing, disinfecting and emptying each pipeline in the entire device in sequence include:

[0036] After confirming the water tank level and the water in the water tank is empty, disinfectant enters the water tank through the fifth pipe. When the disinfectant level in the water tank reaches a certain height, the input of disinfectant is stopped, the second pipe is controlled to open, the disinfectant in the water tank is discharged, and RO water is input into the water tank, and the diluted disinfectant is obtained by mixing in a certain ratio.

[0037] Starting the degassing pump, the gas in the disinfectant expands into bubbles and enters the degassing chamber along with the disinfectant, the bubbles in the degassing chamber are collectively discharged to the sewer, the disinfectant passes through the second filter and then enters the degassing valve, starting the degassing pump, the gas in the disinfectant expands into bubbles and enters the degassing chamber along with the disinfectant, the bubbles in the degassing chamber are collectively discharged to the sewer, after the gas in the disinfectant released in the degassing chamber is discharged, controlling the third pipeline and the fourth pipeline to open, and the released disinfectant passes through the third pipeline to flush the sewage filter;

[0038] Open the water tank inlet valve and RO water enters the water tank. When the liquid level in the water tank reaches the highest level, close the water tank inlet valve. When the liquid level is low, open the water tank inlet valve again until all the pipes in the entire device are filled with disinfectant. Close the RO water valve. At this time, the disinfectant circulates in the various pipes in the entire device. The mixing chamber continuously mixes RO water and sodium hypochlorite and dilutes it with sodium hypochlorite solution. The disinfectant circulates in the various pipes in the entire device for a certain period of time and then is discharged into the sewer, completing the disinfection of all the pipes in the entire device.

[0039] Preferably, the first pipeline is controlled to be opened, RO water is input into the first pipeline to flush each pipeline. After the flushing is completed, the input of RO water is stopped, and the degassing pump and the flow pump are started. The degassing pump and the flow pump suck the liquid in each pipeline in the entire device into the drainage pipeline, and then discharge it to the sewer through the drainage pipeline to empty each pipeline in the entire device.

[0040] Compared with the above background technology, the present invention provides a fully automatic hemodialysis equipment sewage purification device, which has the following beneficial effects:

[0041] (1) The present invention connects the hemodialysis equipment through an integral device, purifies and filters the waste liquid discharged during the operation of the hemodialysis equipment, removes organic substances such as protein and fat in the waste liquid, thereby preventing serious blockage and odor in the sewer, ensuring that the department can continue to operate normally, and at the same time preventing the waste liquid from overflowing outside the equipment, thereby reducing the risk of hospital infection. Moreover, after the hemodialysis equipment stops working, the overall device is controlled to start the self-cleaning mode, flushing, disinfecting and emptying the various pipes inside the overall device, so that the normal operation can be maintained before the hemodialysis equipment is activated next time, ensuring the continuous purification and filtration of the waste liquid discharged during the operation of the hemodialysis equipment. The fully automatic hemodialysis equipment sewage purification method adopted in the present invention also has the above beneficial effects.

[0042] (2) The entire device of the present invention will perform a self-check before operation to ensure the normal operation of the liquid inlet degassing module, sewage filtration module, and disinfection module, to prevent blockage and other risks during the purification and filtration of waste liquid, and to promptly remind staff to check and handle the process, ensuring that the entire device can purify and filter the waste liquid discharged by the hemodialysis equipment during operation. The fully automatic hemodialysis equipment sewage purification method adopted in the present invention also has the above beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0044] Figure 1 A schematic diagram of a flow chart of a sewage purification device provided in an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of the working principle of the circuit module of the sewage purification device provided by an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the circuit module components of the sewage purification device provided by an embodiment of the present invention.

[0047] Specifically,

[0048] 100 - Liquid inlet degassing module; 110 - First pipeline; 111 - Liquid inlet valve; 112 - Pressure reducing valve; 113 - Water inlet pressure sensor; 120 - Second pipeline; 121 - First filter; 122 - Degassing valve; 123 - Degassing pressure sensor; 124 - Degassing pump; 130 - Water tank; 131 - Water tank inlet valve; 132 - Water tank valve; 140 - RO water inlet pipeline; 141 - RO water valve; 142 - First non-return valve; 150 - Second air inlet pipeline; 151 - Drain valve; 152 - Third air filter; 160 - Circulation pipeline; 161 - Circulation bypass valve; 170 - Degassing chamber; 180 - Waste liquid;

[0049] 200 - sewage filter module; 210 - third pipeline; 211 - mixing chamber; 212 - conductivity sensor; 213 - conductivity monitoring sensor; 214 - pre-filter valve; 215 - pre-filter pressure sensor; 220 - fourth pipeline; 221 - post-filter pressure sensor; 222 - post-filter valve; 230 - seventh pipeline; 231 - bypass pressure sensor; 232 - filter bypass valve; 240 - drainage pipeline; 241 - flow pump; 242 - pipeline detection sensor; 243 - sewer valve; 250 - sewer; 260 - first air intake pipeline; 261 - first air filter; 262 - air solenoid valve; 263 - second air filter; 264 - second one-way valve; 270 - sewage filter;

[0050] 300 - disinfection module; 310 - fifth pipeline; 311 - second filter; 320 - disinfection pump; 330 - sixth pipeline; 331 - disinfection valve; 332 - eighth pipeline. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0052] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0053] like Figure 1 As shown, in order to achieve the above-mentioned purpose, the present invention provides a sewage purification device for a fully automatic hemodialysis equipment, comprising: an inlet degassing module 100, a sewage filtration module 200 and a disinfection module 300.

[0054] Among them, the liquid inlet degassing module 100 includes: a first pipeline 110 and a second pipeline 120, one end of the first pipeline 110 is connected to the sewer pipe of the hemodialysis equipment, and the waste liquid 180 discharged from the sewer pipe of the hemodialysis equipment is input through the first pipeline 110, the other end of the first pipeline 110 is connected to the water tank 130, and a water tank inlet valve 131 is provided in the water tank 130, and the water tank inlet valve 131 can control the connection and closing between the first pipeline 110 and the water tank 130, one end of the second pipeline 120 is connected to the water tank 130, and at the same time, a water tank valve 132 is provided in the water tank 130, and the connection and closing between the second pipeline 120 and the water tank 130 can be controlled by the water tank valve 132, the other end of the second pipeline 120 is connected to the degassing chamber 170, and the first filter 121, degassing valve 122, degassing pump 124 and degassing pressure sensor 123 are sequentially provided in the second pipeline 120. In addition, a water tank 130 liquid level sensor is provided in the water tank 130 , and the liquid level of the liquid in the water tank 130 can be monitored in real time through the water tank 130 liquid level sensor.

[0055] The degassing valve 122 is provided with a flow-restricting hole. When the degassing valve 122 is closed, the waste liquid 180 can only flow through the flow-restricting hole. The inner diameter of the flow-restricting hole is smaller than that of the degassing valve 122, thereby acting as a flow-restricting hole to increase the flow rate of the waste liquid 180 in the second pipeline 120, facilitating the degassing of the waste liquid 180. When the degassing valve 122 is opened, the fluidity of the liquid is increased. The first filter 121 is used to filter the waste liquid 180 discharged from the water tank 130 to prevent impurities in the waste liquid 180 from clogging the flow-restricting hole in the degassing valve 122.

[0056] The sewage filtration module 200 includes: a third pipeline 210 and a fourth pipeline 220. One end of the third pipeline 210 is connected to the degassing chamber 170, and the other end of the third pipeline 210 is connected to the sewage filter 270. A degassing chamber 170 liquid level sensor is provided in the degassing chamber 170. When the degassing pump 124 is started, the gas in the waste liquid 180 expands into bubbles and enters the degassing chamber 170 with the waste liquid 180. The bubbles are separated from the surface liquid, and the liquid level of the waste liquid 180 in the degassing chamber 170 is reduced due to the presence of gas. In addition, a pre-filter valve 214 and a post-filter valve 222 are provided in the third pipeline 210. By closing the pre-filter valve 214, the third pipeline 210 is closed. Since the degassing chamber 170 is connected to the sewer 250, the gas in the degassing chamber 170 can be directly discharged into the sewer 250 to ensure that the liquid level of the waste liquid 180 in the degassing chamber 170 rises again. Simultaneously, exhausting gas from degassing chamber 170 prevents excessive gas from accumulating within wastewater filter 270 due to its inability to pass through, thereby ensuring that wastewater filter 270 can efficiently filter waste liquid 180. When the filter valve is opened to connect third pipeline 210, waste liquid 180 enters wastewater filter 270 through third pipeline 210, where it is filtered and purified. Furthermore, a pre-filtration pressure sensor 215 and a post-filtration pressure sensor 221 are provided in third pipeline 210. These sensors are each used to detect the pressure at their respective locations.

[0057] It should be noted that a filter membrane is provided in the sewage filter 270, through which organic substances such as microorganisms, lipids, proteins in the waste liquid 180, particles in the dialysate, silica gel particles in the water channel of the hemodialysis equipment, and disinfectant impurities are intercepted in the filter membrane. The liquid flows from the inside of the filter membrane to the outside of the filter membrane to purify the waste liquid 180 and remove organic substances such as proteins and fats in the waste liquid 180, thereby preventing serious blockage and odor in the sewer 250. One end of the fourth pipeline 220 is connected to the sewage filter 270, and the second end of the fourth pipeline 220 is connected to the drainage pipeline 240. A flow pump 241, a pipeline detection sensor 242 and a sewer valve 243 are sequentially arranged in the drainage pipeline 240. The flow pump 241 is used to provide suction force to the drainage pipeline 240 to realize the flow of liquid in each pipeline in the overall device. The sewer valve 243 is used to control the on and off of the pipeline. The drainage pipeline 240 is connected to the sewer 250. The waste liquid 180 after filtering through the sewage filter 270 is discharged to the sewer 250 through the drainage pipeline 240.

[0058] The disinfection module 300 includes: a fifth pipeline 310, a sixth pipeline 330 and a circulation pipeline 160. One end of the fifth pipeline 310 is used to input disinfectant. The other end of the fifth pipeline 310 is connected to the disinfection pump 320. The disinfection pump 320 is connected to one end of the sixth pipeline 330. The other end of the sixth pipeline 330 is connected to the water tank 130. The disinfectant is transported to the water tank 130 through the disinfection pump 320. A second filter 311 is provided in the fifth pipeline 310. The second filter 311 filters impurities in the disinfectant to prevent it from entering the first pipeline 110. At the same time, RO water is transported to the water tank 130 through the first pipeline 110. Preferably, the disinfectant uses a sodium hypochlorite solution. The mass percentage of the disinfectant to the RO water is 1 to 9. The diluted disinfectant in the water tank 130 is 0.5% sodium hypochlorite. The disinfectant is used to disinfect each pipeline in the entire device.

[0059] Among them, the disinfection pump uses a stepper motor, the pump chamber and the pump rod are made of ceramic material, the RO water inlet pipeline and the first pipeline are connected to the eighth pipeline 332, and the eighth pipeline 332 is connected to the disinfection pump. After starting the disinfection pump, RO water can be transported into the disinfection pump through the eighth pipeline 332. The RO water forms a water film through the ceramic pump chamber, which plays a lubricating role, reduces the wear of the disinfection pump, and no adjustment is required. At the same time, a Hall sensor is arranged in the pump chamber, and the magnet at the connection between the pump rod and the motor is monitored by the Hall sensor to obtain the pumping speed of the disinfection pump.

[0060] It should be noted that the circulation pipeline 160 connects the first pipeline 110 and the drainage pipeline 240, and is used for the disinfectant to circulate in the circulation pipeline 160 and each pipeline to achieve the best disinfection effect on each pipeline.

[0061] In addition, the liquid inlet degassing module 100, the sewage filtration module 200 and the disinfection module 300 are connected through a control system to intelligently control the various components in the liquid inlet degassing module 100, the sewage filtration module 200 and the disinfection module 300, thereby realizing the intelligence and automation of the sewage purification device.

[0062] During use, the control system controls the entire device to start up and perform self-tests at the set time to ensure the normal operation of the liquid inlet degassing module 100, the sewage filtration module 200 and the disinfection module 300; after the self-test of the entire device is completed, the control system controls the first pipeline 110 to open, and the waste liquid 180 output by the hemodialysis equipment enters the water tank 130 through the first pipeline 110; after the liquid level of the waste liquid 180 in the water tank 130 reaches a certain height, the control system controls the opening of the second pipeline 120 and starts the degassing pump 124 at the same time, and the waste liquid 180 in the water tank 130 is filtered by the first filter 121 and enters the degassing valve 122, and the flow is limited by the flow restriction hole in the degassing valve 122 to increase the flow of the waste liquid 180 in the second pipeline 120. At the flow rate in, the gas in the waste liquid 180 expands into bubbles and enters the degassing chamber 170 along with the waste liquid 180, and the bubbles in the degassing chamber 170 are concentrated and discharged to the sewer 250; after the gas in the waste liquid 180 in the degassing chamber 170 is discharged, the third pipeline 210 and the fourth pipeline 220 are controlled to be opened, and the waste liquid 180 enters the sewage filter 270 through the third pipeline 210, and the waste liquid 180 after being purified by the sewage filter 270 enters the drainage pipeline 240, and is discharged to the sewer 250 through the drainage pipeline 240, completing the treatment of the waste liquid 180; after the hemodialysis equipment stops working, the control system controls the entire device to start the self-cleaning mode, and flushes, disinfects and empties each pipeline in the entire device in turn.

[0063] In one embodiment of the present invention, the sewage filter 270 is connected to the seventh pipeline 230, and a bypass pressure sensor 231 and a filter bypass valve 232 are sequentially provided in the seventh pipeline 230. The seventh pipeline 230 is connected to the drainage pipeline 240. When an emergency such as a power failure occurs in the equipment, the circulation bypass valve 161 and the drainage valve 243 are always open. The hemodialysis equipment can also realize the non-purified drainage function when treating patients, thereby ensuring the normal use of the hemodialysis equipment.

[0064] In addition, a liquid inlet valve 111, a pressure reducing valve 112, and a water inlet pressure sensor 113 are sequentially provided in the first pipeline 110. The liquid inlet valve 111 is used to control the on-off of the first pipeline 110. When the liquid inlet valve 111 is opened, waste liquid 180 discharged from the hemodialysis equipment can enter the first pipeline 110. In addition, an RO water inlet pipeline 140 is provided at the first end of the first pipeline 110. When RO water needs to be input into the water tank 130, the liquid inlet valve 111 is closed to ensure that the RO water can enter the inner water tank 130 without entering the hemodialysis equipment. An RO valve and a first one-way valve 142 are sequentially provided in the RO water inlet pipeline 140. The RO valve controls the on-off of the RO water inlet pipeline 140, while the first one-way valve 142 ensures that the liquid in the first pipeline 110 does not enter the RO water inlet pipeline 140. The pressure reducing valve 112 can reduce the pressure of the RO water when it is transported in the first pipeline 110 , and the inlet water pressure sensor 113 can monitor the liquid pressure at its location in real time.

[0065] In one embodiment of the present invention, the third pipeline 210 is connected to the first air intake pipeline 260, and the first air filter 261, the air solenoid valve 262, the second air filter 263 and the second one-way valve 264 are sequentially provided in the first air intake pipeline 260. At the same time, the first pipeline 110 is connected to the second air intake pipeline 150, and the third air filter 152 and the drain valve 151 are sequentially provided in the second air intake pipeline 150. When the equipment needs to be emptied, the RO valve and the liquid inlet valve 111 are closed, the degassing pump 124 and the flow pump 241 are turned on to discharge the liquid in each pipeline, and the gas enters the various pipelines inside the overall device through the first air intake pipeline 260 and the second air intake pipeline 150 to ensure the normal operation of the degassing pump 124 and the flow pump 241.

[0066] In one embodiment of the present invention, a mixing chamber 211, a conductivity sensor 212, and a conductivity monitoring sensor 213 are sequentially provided in the third pipeline 210. The mixing chamber 211 is used to mix the disinfectant with the RO water, so that the disinfectant can be fully and evenly diluted to clean and disinfect each pipeline. The conductivity sensor 212 and the conductivity monitoring sensor 213 are both used to monitor the conductivity of the waste liquid 180 to determine whether the conductivity of the waste liquid 180 and the concentration of the disinfectant are within the standard value range, thereby determining whether the entire device can operate normally.

[0067] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the control system includes: a communication layer, a mainboard layer, and a base layer. The communication layer is connected to the mainboard layer, which is connected to the base layer, and the base layer is connected to the liquid inlet degassing module 100, the sewage filtration module 200, and the disinfection module 300. The communication layer includes: a liquid crystal touch screen, which is used to generate display images and serve as a user operation interface; a liquid crystal touch screen controller, which is used to interpret user touch signals; a backlight inverter circuit, which is used to provide power for the screen light; a first signal light circuit board and a second signal light circuit board, which are respectively used to display the operating status of the entire device; and a top panel, which is connected to the liquid crystal touch screen, the first signal light circuit board, and the second signal light circuit board, and is also connected to a speaker.

[0068] The mainboard layer includes: a mainboard, on which a port assembly and a central processing unit are arranged. The port assembly includes several communication ports, which are used for input and output through the LCD touch screen. The port assembly connects the communication layer and the basic layer. In addition, the central processing unit is used to control and monitor the entire device.

[0069] The basic layer includes: a basic board, on which a digital board, an analog board and a valve power board are arranged, the digital board is connected to the main board and the upper panel, and the digital board includes: a first control unit and a first monitoring unit. Specifically, the first control unit is respectively connected to the degassing pump 124, the flow pump 241 and the disinfection pump 320 to respectively control the start and stop of the degassing pump 124, the flow pump 241 and the disinfection pump 320, and the first monitoring unit is respectively connected to the water tank 130 liquid level sensor and the degassing chamber 170 liquid level sensor, and obtains the data monitored by the water tank 130 liquid level sensor and the degassing chamber 170 liquid level sensor.

[0070] The analog board is connected to the digital board and includes a second control unit and a second monitoring unit, which are respectively connected to the inlet degassing module 100, the sewage filtration module 200, and the disinfection module 300. Specifically, the second control unit and the second monitoring unit are respectively connected to the conductivity sensor 212, the conductivity monitoring sensor 213, the pipeline detection sensor 242, the pre-filtration pressure sensor 215, the post-filtration pressure sensor 221, the degassing pressure sensor 123, and the bypass pressure sensor 231.

[0071] The valve power board is connected to the digital board, the liquid inlet degassing module 100, the sewage filtration module 200 and the disinfection module 300. Specifically, the valve power board is connected to the degassing valve 122, the water tank valve 132, the water tank inlet valve 131, the filter bypass valve 232, the air solenoid valve 262, the disinfection valve 331, the circulation bypass valve 161, the RO water valve 141, the pressure reducing valve 112, the pre-filtration valve 214, the post-filtration valve 222, the drain valve 243, the drain valve 151 and the liquid inlet valve 111.

[0072] It should be noted that after the self-inspection of the entire device is completed, the entire device automatically enters the sewage purification program on standby through the preset program control. In the standby state, except for the RO water valve 141, the degassing valve 122, the drain valve 151, the water tank valve 132, the disinfection valve 331, the air solenoid valve 262, the filter bypass valve 232 and the disinfection pump 320 which are closed, the remaining valves are open, so that the entire device can quickly enter the working state.

[0073] The sewage purification method of the fully automatic hemodialysis equipment adopted by the present invention specifically comprises the following steps: connecting one end of the first pipeline 110 to the sewer pipe of the hemodialysis equipment; after the hemodialysis equipment is in operation, the waste liquid 180 output by the hemodialysis equipment enters the water tank 130 through the first pipeline 110; the pressure of the waste liquid 180 before entering the water tank 130 in the first pipeline 110 is measured by the water inlet pressure sensor 113 to be about 30 mmHg; after the liquid level of the waste liquid 180 in the water tank 130 reaches a certain height, the water tank valve 132 is controlled to be opened, and the degassing pump 124 is started at the same time; the degassing pump 124 is pumped at 20 00rpm, the pressure measured by the degassing pressure sensor 123 is -500mmHg, the waste liquid 180 in the water tank 130 is filtered by the first filter 121 and then enters the degassing valve 122, and the flow rate of the waste liquid 180 in the second pipeline 120 is increased by contraction and flow restriction through the flow restriction hole in the degassing valve 122, and the gas in the waste liquid 180 expands into bubbles and enters the degassing chamber 170 along with the waste liquid 180. The bubbles in the degassing chamber 170 are concentrated and discharged to the sewer 250; after the gas in the waste liquid 180 in the degassing chamber 170 is discharged, the pre-filter valve 214 and the post-filter valve 216 are controlled to open. 22, that is, the third pipeline 210 and the fourth pipeline 220 are opened, and the filter bypass valve 232 is controlled to close, that is, the seventh pipeline 230 is closed. The waste gas passes through the mixing chamber 211, the conductivity sensor 212, and the conductivity monitoring sensor 213 in sequence. The conductivity of the waste liquid 180 is measured by the conductivity sensor 212 and the conductivity monitoring sensor 213 to determine whether the conductivity of the waste liquid 180 is consistent with the standard value to ensure the safe operation of the hemodialysis equipment. The flow pump 241 operates at 1800 rpm, and the waste liquid 180 enters the sewage filter 270 through the third pipeline 210. The pre-filtration pressure is 450 mmHg. After being purified by the sewage filter 270, the waste liquid 180 enters the drainage pipe 240. Organic substances such as microorganisms, lipids, and proteins in the waste liquid 180, particles in the dialysate, silica gel particles in the water path of the hemodialysis equipment, and disinfectant impurities are all intercepted in the filter membrane. The purified and filtered waste liquid 180 is discharged to the sewer 250 through the drainage pipe 240, completing the treatment of the waste liquid 180. After the hemodialysis equipment stops working, the control system controls the entire device to start the self-cleaning mode, and flushes, disinfects, and empties each pipeline in the entire device in turn. It should be noted that the sewage purification method for the fully automatic hemodialysis equipment adopted in the present invention does not involve the diagnosis and treatment of diseases.

[0074] It should be noted that the transmittance of waste liquid 180 measured by pipeline detection sensor 242 must be greater than 50, and then waste liquid 180 is discharged into hospital sewer 250 through drain valve 243. Furthermore, when the liquid level sensor in water tank 130 detects a low liquid level, degassing pump 124 is controlled to shut down. It is then restarted after the liquid level of waste liquid 180 in water tank 130 reaches a certain height. This effectively prevents the pump from idling and reduces the probability of malfunction.

[0075] In one embodiment of the present invention, the control system controls the entire device to start up at a set time and perform self-test steps including: circuit detection, driving the degassing valve 122, the water tank valve 132, the water tank inlet valve 131, the filter bypass valve 232, the air solenoid valve 262, the disinfection valve 331, the circulation bypass valve 161, the RO water valve 141, the pressure reducing valve 112, the pre-filter valve 214, the post-filter valve 222, the drain valve 243, the drain valve 151 and the inlet valve 111 through the valve power board to complete the opening and closing actions, and monitoring the opening and closing actions through the digital board. If it is found that the instruction and the action are inconsistent, a re-test is performed. If the second self-test fails, an alarm is given through the speaker.

[0076] Before RO water is introduced into each pipeline and each pipeline is connected to the atmosphere outside the entire device, the pressure detected in each pipeline is set to zero. Specifically, except for the disinfection valve 331, RO water valve 141, and liquid inlet valve 111, all other valves are open. At this time, all pipelines in the entire device are connected to the atmosphere, and the readings of the conductivity sensor 212, conductivity monitoring sensor 213, pipeline detection sensor 242, pre-filter pressure sensor 215, post-filter pressure sensor 221, degassing pressure sensor 123, and bypass pressure sensor 231 are all around 0 mmHg. If the pressure value detected by each sensor differs from 0 mmHg by more than ±4 mmHg, and if the pressure value between the second control unit and the second monitoring unit differs by more than ±2 mmHg, an alarm is triggered, prompting staff to perform corrections. Furthermore, the liquid level in the water tank 130 should be low. If the second control unit and the second monitoring unit do not match the monitored position, an alarm is triggered, prompting staff to perform corrections.

[0077] Water line pressure detection: input RO water into each pipeline, detect whether the pressure value in each pipeline is within the standard value range, and detect whether the sewage filter 270 is blocked. Specifically, the liquid inlet valve 111, the circulation bypass valve 161, the water tank valve 132, the degassing valve 122, the drain valve 151, the air solenoid valve 262, the disinfection valve 331 and the disinfection pump 320 are closed, and the remaining valves are opened. The RO water enters the pipeline after passing through the RO valve and the first one-way valve 142. The RO water pressure is between 100-700kPa. After passing through the pressure reducing valve 112, the water inlet pressure detected by the water inlet pressure sensor 113 is normally 350mmHg. When the water inlet pressure detected by the water inlet pressure sensor 113 differs from 350mmHg by more than ±4mmHg, and the pressure value difference between the second control unit and the second monitoring unit is more than ±2mmHg, an alarm is issued. It should be noted that after the RO water fills the water tank 130, the position of the liquid level sensor changes from low to medium to high. If the data measured by the second control unit and the second monitoring unit do not match the actual liquid level of the RO water in the water tank 130, an alarm will be triggered.

[0078] It should be noted that when the RO water level in the water tank 130 is high, the digital board transmits the high water level signal of the water tank 130 liquid level sensor to the main board through the basic board. The main board sends a signal to the digital board to open the water tank valve 132 and close the water tank water inlet valve 131. The valve power board drives the water tank valve 132 to open and the water tank water inlet valve 131 to close. At this time, RO water enters the degassing chamber 170 through the third pipeline 210. When the water tank 130 liquid level sensor becomes a medium liquid level, the main board sends a signal to open the water tank water inlet valve 131 until the RO water level in the water tank 130 reaches a high water level, and this cycle repeats.

[0079] When RO water passes through the degassing valve 122, the degassing valve 122 is closed and water can only pass through the flow restriction hole in the degassing valve 122. The digital board controls and monitors the degassing pump 124, which operates at 2200 rpm. If the speed does not match, an alarm is triggered. The pressure at the location measured by the degassing pressure sensor 123 is normally -500 mmHg. When the pressure value detected by the degassing pressure sensor 123 differs from -500 mmHg by more than ±4 mmHg, and the pressure value difference between the second control unit and the second monitoring unit is more than ±2 mmHg, an alarm is triggered. The water discharges air through the degassing chamber 170, and the liquid level sensor of the degassing chamber 170 is at a low position. If the data monitored by the second control unit and the second monitoring unit do not match the actual liquid level, an alarm is triggered.

[0080] Conductivity sensor 212 and conductivity monitoring sensor 213 monitor the RO water's conductivity after it fills the water tank 130 and all pipes within the device. When both conductivity sensor 212 and conductivity monitoring sensor 213 are at 0 Ms / cm, an alarm is triggered if the conductivity measured by the second control unit and the second monitoring unit differ by ±0.5. The data measured by conductivity sensor 212 and conductivity monitoring sensor 213 is transmitted from the analog board to the first control unit and first monitoring unit on the digital board, and then to the main board and communication layer.

[0081] After the sewage filter 270 is tested and the RO water fills the water tank 130 and all the pipes within the entire device, the post-filter valve 222 is closed. At this point, the pre-filter pressure is approximately 450 mmHg, and the filter bypass pressure is approximately 450 mmHg. This indicates good permeability within the filter membrane. An alarm is triggered if the pressure value detected by the pre-filter pressure sensor 215 differs from 450 mmHg by more than ±4 mmHg, and if the pressure values ​​between the second control unit and the second monitoring unit differ by more than ±2 mmHg. Furthermore, if the pre-filter pressure and filter bypass pressure differ by more than 20 mmHg, indicating membrane blockage, an alarm is triggered.

[0082] The inlet valve 111, circulation bypass valve 161, degassing valve 122, drain valve 151, air solenoid valve 262, filter bypass valve 232, disinfection valve 331, and disinfection pump 320 are controlled to close. All other components are opened, and RO water fills the water tank 130 and all pipelines within the entire device. The pre-filter valve 214 is closed, and the fourth pipeline 220 is now sealed. The flow pump 241 continues to operate at 1800 rpm. The measured post-filtration pressure is -400 mmHg, which is defined as the first absolute value. The air solenoid valve 262 is opened, and air enters the third pipeline 210 from the first inlet pipeline 260, passes through the sewage filter 270, and enters the fourth pipeline 220. This air pressurizes the RO water toward the post-filtration area, resulting in a measured post-filtration pressure of -200 mmHg, which is defined as the second absolute value. The first absolute value minus the second absolute value should be greater than 100 mmHg. If this is not the case, the sewage filter 270 is considered clogged, and an alarm is triggered to alert personnel to address the problem. In addition, flow pump 241 and drain valve 243 are shut off for five seconds. The post-filtration pressure is measured at -200 mmHg, which is defined as the third absolute value. The second absolute value minus the third absolute value should be less than 50 mmHg; otherwise, wastewater filter 270 is considered leaking. It should be noted that flow pump 241 self-tests at 1800 rpm. The digital board controls and monitors the speed of flow pump 241, triggering an alarm if the speed does not match the specified value.

[0083] During pipeline inspection, the liquid inlet valve 111, circulation bypass valve 161, degassing valve 122, drain valve 151, air solenoid valve 262, filter bypass valve 232, disinfection valve 331, and disinfection pump 320 are controlled to be closed. Other components are opened, and RO water fills the water tank 130 and all pipelines in the entire device. At this time, the pipeline inspection sensor 242 is filled with RO water. The transmittance of the RO water is detected to be 100%. If the transmittance of the RO water is less than 70 or the value drifts and becomes unstable within 10 seconds, an alarm is triggered to prompt the staff to perform correction processing.

[0084] It should be noted that after the entire device completes circuit testing, water pressure testing, various sensor testing, conductivity sensor 212 and conductivity monitoring sensor 213 monitoring, sewage filter 270 testing, and pipeline testing, the measured data is transmitted from the digital board to the main board, which determines whether it passes the test. If it is deemed abnormal, the upper panel controls the first and second signal control boards to sound an alarm. All valves in the device are clamped, the motor stops, and the alarm information and the faulty component are transmitted to the screen via the communication port for staff to view. Staff operate the LCD touch screen, which transmits signals to the LCD touch screen controller. The main board receives the input signals through the communication port and issues commands to the upper panel and base board, thereby controlling the operation of the entire device.

[0085] At the same time, during the sewage purification process of the entire device, the data of each sensor in the entire device is collected by the analog board and transmitted to the first control unit and the first monitoring unit on the digital board. The degassing pump 124 and the flow pump 241 are controlled and monitored by the first control unit and the first monitoring unit on the digital board. Each valve is driven by the valve power board, and the first control unit and the first monitoring unit on the digital board are controlled and monitored. The digital board transmits the data to the main board through the basic board, and the main board determines whether the data of the control unit and the monitoring unit are consistent with the real-time data. If it exceeds the preset limit, the main board controls the first signal control board and the second signal control board through the upper panel to sound an alarm, and the degassing pump, disinfection pump and flow pump in the entire device stop operating. Except for the circulation bypass valve 161 and the drain valve 243 which are normally open, the other valves are in a long closed state, which does not affect the normal discharge of waste liquid by the hemodialysis equipment. At this time, the hemodialysis equipment has no drainage purification function when treating patients. At the same time, the alarm information and faulty components are transmitted to the screen through the communication port for the staff to view. The staff operates through the LCD touch screen, and the LCD touch screen transmits the signal to the LCD touch screen controller. The main board receives the input signal through the communication port, and issues instructions to the upper panel and the base board, thereby controlling the action of the entire device. After the internal maintenance of the entire device, reset and other operations are performed through the LCD touch screen. The LCD touch screen transmits the signal to the LCD touch screen controller, and the main board communication module receives the input signal through the controller, issues instructions to the upper panel and the digital board, stops the alarm, closes the circulation bypass valve 161, and opens the corresponding components to start sewage purification, and checks whether the parameters of each component are normal.

[0086] In one embodiment of the present invention, the steps of flushing, disinfecting and emptying each pipe in the entire device in sequence include: the control system controls the entire device to start a self-cleaning mode, which is divided into 8 minutes of flushing, 2 minutes of absorbing disinfectant, 10 minutes of water circulation and 10 minutes of flushing and emptying, a total of 4 stages for a total of 30 minutes.

[0087] The liquid inlet valve 111, the circulation bypass valve 161, the degassing valve 122, the drain valve 151, the air solenoid valve 262, the disinfection valve 331 and the disinfection pump 320 are controlled to be closed, and other components are opened. RO water enters the water tank 130 through the first pipeline 110. The RO water pressure is 100-700kPa. After the RO water passes through the pressure reducing valve 112, it is 350mmHg. After the water tank 130 is filled, the position of the liquid level sensor changes from low to medium to high. The water tank valve 132 is controlled to be opened and the water tank inlet valve 131 is closed. The RO water passes through the first filter 121 in the second pipeline 120, the flow restriction hole of the degassing valve 122, the degassing valve 131 and the degassing valve 132 in turn. The air pressure sensor 123 enters the degassing chamber 170. When the liquid level sensor in the water tank 130 reaches the middle level, the water tank inlet valve 131 is controlled to open and water is admitted to the high water level. This reciprocating process ensures that the liquid level in the water tank 130 is always above the middle level, preventing the degassing pump 124 from idling. The RO water has a pressure of -500 mmHg when passing through the degassing pressure sensor 123. The degassing pump 124 operates at 2200 rpm. After degassing in the degassing chamber 170, the RO water sequentially enters the mixing chamber 211, the conductivity sensor, and the monitoring sensor. The flow pump 241 operates at 2000 rpm. After flushing, the conductivity of the RO water is measured to be 0 Ms / cm. After the RO water passes through the pre-filtration valve 214, the pre-filtration pressure is measured to be 450 mmHg. Further, the post-filter valve 222 is opened and the post-filter bypass valve is closed. After 10 seconds, the post-filter valve 222 is closed and the post-filter bypass valve is opened. In this cycle, the inner and outer sides of the filter membrane and the membrane pores of the sewage filter 270 are effectively flushed, and impurities such as organic matter in the sewage filter 270 are pre-eliminated. RO water passes through the pipeline detection sensor 242. Flushing the sewage filter 270 at this time will bring out a large amount of impurities. The pipeline detection sensor 242 measures a transmittance greater than 30. The RO water is discharged into the sewer 250 through the drain valve 243. After flushing for 5 minutes, the water tank inlet valve 131, degassing pump 124, flow pump 241, post-filter valve 222, and filter bypass valve 232 are controlled to close. The liquid inlet valve 111 and circulation bypass valve 161 are opened to flush the circulation pipeline 160. Because the hemodialysis equipment is shut down, the RO water cannot be flushed into the equipment through the equipment sewer pipe. The flow pump 241, post-filter valve 222, and filter bypass valve 232 are closed. The water flushing the circulation pipeline 160 enters the sewer 250 through the drain valve 243. Finally, the pipeline is emptied, and the water inlet valve and RO water valve 141 are closed. At this time, the water in the bypass pipe flows into the sewer 250 by gravity. Control and close the circulation bypass valve 161, open the liquid inlet valve 111, the water tank inlet valve 131, the post-filter valve 222, the filter bypass valve 232, and the degassing valve 122, and run the degassing pump 124 and the flow pump 241 at 1500rpm to quickly drain the water in the pipeline. After the flushing program time is over, all valves and pumps are closed to complete the flushing of each pipeline in the entire device.

[0088] The steps of flushing, disinfecting and emptying each pipeline in the whole device in sequence include: confirming the liquid level of the water tank 130. After there is no water in the water tank 130, open the RO water valve 141, the disinfection valve 331 and the disinfection pump 320, close the water tank inlet valve, and the RO water enters the disinfection pump 320 through the eighth pipeline 332 to lubricate the disinfection pump 320. The disinfectant enters the water tank 130 through the fifth pipeline 310 and the sixth pipeline 330. The disinfectant is 5% sodium hypochlorite. When the liquid level of the disinfectant in the water tank 130 reaches a certain height, control the disinfection valve 331 and the disinfection pump 320. 0, open the water tank valve 132, start the degassing pump 124 at 2000 rpm, and sodium hypochlorite enters the second pipeline 120 from the water tank 130. Control the opening of the post-filter valve 222 and the closing of the post-filter bypass valve. After 10 seconds, control the closing of the post-filter valve 222 and the opening of the post-filter bypass valve, continuing the cycle. The flow pump 241 operates at 1800 rpm, controls the closing of the drain valve 243, opens the circulation bypass valve 161 and the liquid inlet valve 111, and simultaneously opens the water tank inlet valve 131, allowing RO water to enter the water tank 130. When the liquid level in the water tank 130 reaches the highest level, close the water tank inlet valve 131. When the liquid level is low, open the water tank inlet valve 131 again. Because 0.5% sodium hypochlorite solution is needed to disinfect the internal pipelines, the ratio of disinfectant to RO water is 1:9. The volume of the water tank 130 is 60 ml, and the total water volume is 540 After this process is repeated nine times, all the pipes in the entire device are completely filled with disinfectant. RO water valve 141 is closed. At this point, the disinfectant circulates throughout the various pipes within the entire device. Mixing chamber 211 continuously mixes RO water and sodium hypochlorite to produce a 0.5% sodium hypochlorite solution. After circulating through the various pipes within the entire device for a certain period of time, the disinfectant, which has flushed the various pipes within the entire device, enters drain pipe 240, is discharged through drain pipe 240 to circulation pipe 160, and then enters first pipe 110 for circulation. After circulating through the various pipes within the entire device for a certain period of time, the disinfectant is discharged into sewer 250, completing the disinfection of the entire device. Furthermore, after the disinfectant is discharged into sewer 250, the waste liquid discharged into sewer 250 during the flushing phase can be cleaned and disinfected, further preventing sewer blockage.

[0089] It should be noted that after three minutes of circulation, the device checks the liquid level sensor in the degassing chamber 170. Since the circulating liquid has undergone three minutes of degassing, the liquid level in the degassing chamber 170 is normally in a high, sealed state. If the data obtained by the second control unit or the second monitoring unit does not match, an alarm is triggered. Furthermore, if there is a leak in any of the pipes within the entire device, the degassing valve 122 is opened to increase the permeability of the liquid without the need for current limiting. The device uses conductivity to determine whether the disinfectant concentration meets the requirements. The conductivity of the disinfectant should be greater than 20Ms / cm when circulating in the various pipes within the entire device. If it does not meet the requirements, an alarm is triggered, notifying staff that the disinfectant concentration is insufficient.

[0090] In one embodiment of the present invention, after the disinfection of each pipeline in the overall device is completed, the drain valve 243 and the RO water valve 141 are controlled to open, that is, the first pipeline 110 is opened, and RO water is input into the first pipeline 110 to flush each pipeline. During this period, the degassing valve 122 is alternately opened and closed to flush the flow-limiting hole. The post-filter valve 222 is controlled to open and the post-filter bypass valve is closed. After 10 seconds, the post-filter valve 222 is controlled to close and the post-filter bypass valve is opened. This cycle is repeated. After the flushing is completed, the RO water valve 141 is controlled to close and the input of RO water is stopped. Start the degassing pump 124 and the flow pump 241. At the same time, control the opening of the liquid inlet valve 111, the water tank inlet valve 131, the water tank valve 132, the post-filter valve 222 and the filter bypass valve 232, open the drain valve 151 and the air solenoid valve 262, and the degassing pump 124 and the flow pump 241 suck the liquid in each pipeline in the entire device to the drainage pipeline 240, and discharge it to the sewer 250 through the drainage pipeline 240 to empty each pipeline in the entire device.

[0091] It should be noted that after disinfection is completed, the circulation bypass valve 161 and the drain valve 243 are normally open, and the other valves are in a long-closed state to cope with emergencies such as equipment power failure. The hemodialysis equipment can also achieve the non-purified drainage function when treating patients.

[0092] In summary, the waste liquid 180 discharged during the operation of the hemodialysis equipment is purified and filtered through the overall device, and organic substances such as protein and fat in the waste liquid 180 are removed, thereby preventing serious blockage and odor in the sewer 250, ensuring that the department can continue to operate normally, and after the hemodialysis equipment stops working, the overall device is controlled to start the self-cleaning mode, effectively ensuring the continuous purification and filtration effect of the waste liquid 180 discharged during the operation of the hemodialysis equipment.

[0093] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0094] The principles and implementation methods of the present invention are described herein using specific examples. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A sewage purification device for a fully automatic hemodialysis equipment, characterized in that: include: Liquid inlet degassing module, including: a first pipeline, wherein a first end of the first pipeline is used to input waste liquid, and a second end of the first pipeline is connected to a water tank; a second pipeline, wherein a first end of the second pipeline is connected to the water tank, a second end of the second pipeline is connected to a degassing chamber, the degassing chamber is connected to a sewer, a first filter, a degassing valve, a degassing pump, and a degassing pressure sensor are sequentially arranged in the second pipeline, and a flow limiting hole is provided in the degassing valve; Sewage filtration module, including: a third pipeline, wherein a first end of the third pipeline is connected to the degassing chamber, and a second end of the third pipeline is connected to the sewage filter; a fourth pipeline, wherein a first end of the fourth pipeline is connected to the sewage filter, a second end of the fourth pipeline is connected to a drainage pipeline, and the drainage pipeline is connected to the sewer; Disinfection module, including: a fifth pipeline, wherein a first end of the fifth pipeline is used for inputting disinfectant, and a second end of the fifth pipeline is connected to a disinfection pump; a sixth pipeline, wherein a first end of the sixth pipeline is connected to the disinfection pump, and a second end of the sixth pipeline is connected to the water tank; a circulation pipeline, the circulation pipeline connecting the first pipeline and the drainage pipeline; a seventh pipeline, connecting the sewage filter and the drainage pipeline, wherein a bypass pressure sensor and a filter bypass valve are sequentially arranged in the seventh pipeline; A control system is connected to the liquid inlet degassing module, the sewage filtration module and the disinfection module.

2. The sewage purification device for fully automatic hemodialysis equipment according to claim 1, characterized in that: An inlet valve, a pressure reducing valve and an inlet water pressure sensor are sequentially arranged in the first pipeline. An RO water inlet pipeline is arranged at the first end of the first pipeline. An RO valve and a first one-way valve are sequentially arranged in the RO water inlet pipeline.

3. The sewage purification device for fully automatic hemodialysis equipment according to claim 1, characterized in that: The third pipeline is connected to the first air intake pipeline, and the first air intake pipeline is sequentially provided with a first air filter, an air solenoid valve, a second air filter and a second one-way valve.

4. The sewage purification device for fully automatic hemodialysis equipment according to claim 1, characterized in that: A mixing chamber, a conductivity sensor and a conductivity monitoring sensor are sequentially arranged in the third pipeline. The mixing chamber is used to mix the disinfectant and RO water. The conductivity sensor and the conductivity monitoring sensor are both used to monitor the conductivity of the waste liquid to determine whether the conductivity of the waste liquid is consistent with the corresponding standard value and whether the concentration of the disinfectant is within the corresponding standard value range.

5. The sewage purification device for fully automatic hemodialysis equipment according to claim 1, characterized in that: The control system includes: a communication layer, a main board layer and a base layer, the communication layer is connected to the main board layer, the main board layer is connected to the base layer, and the base layer is connected to the liquid inlet degassing module, the sewage filtration module and the disinfection module.

6. A method for purifying wastewater from fully automatic hemodialysis equipment, applied to the wastewater purification device for fully automatic hemodialysis equipment according to any one of claims 1 to 5, characterized in that: The sewage purification method comprises: The control system controls the entire device to start up and perform self-tests according to the set time to ensure the normal operation of the liquid inlet degassing module, the sewage filtration module and the disinfection module; After the self-test of the entire device is completed, the control system controls the first pipeline to open, and the waste liquid output by the hemodialysis equipment enters the water tank through the first pipeline; After the liquid level of the waste liquid in the water tank reaches a certain height, the second pipeline is controlled to be opened and the degassing pump is started at the same time. The waste liquid in the water tank is filtered by the filter and then enters the degassing valve. The flow rate of the waste liquid in the second pipeline is increased by contracting the flow restriction hole in the degassing valve. The gas in the waste liquid expands into bubbles and enters the degassing chamber along with the waste liquid. The bubbles in the degassing chamber are concentrated and discharged to the sewer. After the gas in the waste liquid in the degassing chamber is discharged, the third pipeline and the fourth pipeline are controlled to be opened, and the waste liquid enters the sewage filter through the third pipeline. The waste liquid purified by the sewage filter enters the drainage pipeline and is discharged to the sewer through the drainage pipeline, thereby completing the treatment of the waste liquid; After the hemodialysis equipment stops working, the control system controls the entire device to start the self-cleaning mode, and flushes, disinfects and empties each pipeline in the entire device in turn.

7. The method for purifying wastewater from a fully automatic hemodialysis device according to claim 6, characterized in that: The control system controls the entire device to start up and perform self-test according to the set time, including the following steps: Before RO water is input into each pipeline, and each pipeline in the whole device is connected to the atmosphere, the pressure detected in each pipeline is set to zero; Input RO water into each pipeline, check whether the pressure value in each pipeline is within the standard value range, and check whether the sewage filter is blocked; After the RO water fills the water tank and each pipe, the conductivity of the RO water is tested by the conductivity sensor and the conductivity monitoring sensor.

8. The method for purifying wastewater from a fully automatic hemodialysis device according to claim 6, wherein: The steps of sequentially flushing, disinfecting and emptying each pipeline in the overall device include: The control system controls the entire device to start the self-cleaning mode; The control system controls the first pipeline to open, and RO water enters the water tank through the first pipeline. After the liquid level of the RO water in the water tank reaches a certain height, the control system controls the second pipeline to open and simultaneously starts the degassing pump. The RO water in the water tank is filtered by the first filter and then enters the degassing valve. The flow rate of the RO water in the second pipeline is increased by contraction through the flow restriction hole in the degassing valve. The gas in the RO water expands into bubbles and enters the degassing chamber along with the RO water. The bubbles in the degassing chamber are discharged to the sewer. After the gas in the RO water in the degassing chamber is discharged, the third pipeline and the fourth pipeline are controlled to open, and the RO water flushes the sewage filter through the third pipeline. After flushing the sewage filter, the RO water enters the drainage pipeline and is discharged to the sewer through the drainage pipeline, completing the flushing of each pipeline in the entire device.

9. The method for purifying wastewater from a fully automatic hemodialysis device according to claim 6, wherein: The steps of sequentially flushing, disinfecting and emptying each pipeline in the overall device include: After confirming the water tank level and the water in the water tank is empty, disinfectant enters the water tank through the fifth pipe. When the disinfectant level in the water tank reaches a certain height, the input of disinfectant is stopped, the second pipe is controlled to open, the disinfectant in the water tank is discharged, and RO water is input into the water tank, and the diluted disinfectant is obtained by mixing in a certain ratio. Starting the degassing pump, the gas in the disinfectant expands into bubbles and enters the degassing chamber along with the disinfectant, the bubbles in the degassing chamber are collectively discharged to the sewer, the disinfectant passes through the second filter and then enters the degassing valve, starting the degassing pump, the gas in the disinfectant expands into bubbles and enters the degassing chamber along with the disinfectant, the bubbles in the degassing chamber are collectively discharged to the sewer, after the gas in the disinfectant released in the degassing chamber is discharged, controlling the third pipeline and the fourth pipeline to open, and the released disinfectant passes through the third pipeline to flush the sewage filter; Open the water tank inlet valve and RO water enters the water tank. When the liquid level in the water tank reaches the highest level, close the water tank inlet valve. When the liquid level is low, open the water tank inlet valve again until all the pipes in the entire device are filled with disinfectant. Close the RO water valve. At this time, the disinfectant circulates in the various pipes in the entire device. The mixing chamber continuously mixes RO water and sodium hypochlorite and dilutes it with sodium hypochlorite solution. The disinfectant circulates in the various pipes in the entire device for a certain period of time and then is discharged into the sewer, completing the disinfection of all the pipes in the entire device.

10. The method for purifying wastewater from fully automatic hemodialysis equipment according to claim 6, characterized in that: Control the first pipeline to open, input RO water into the first pipeline, flush each pipeline, stop inputting RO water after flushing, start the degassing pump and the flow pump, the degassing pump and the flow pump suck the liquid in each pipeline in the entire device to the drainage pipeline, and discharge it to the sewer through the drainage pipeline to empty each pipeline in the entire device.

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