Full-automatic hemodialysis equipment pollution discharge purification device and purification method thereof

Abstract

The invention discloses a full-automatic hemodialysis equipment pollution discharge and purification device and a purification method thereof, and relates to the technical field of medical equipment, the full-automatic hemodialysis equipment pollution discharge and purification device comprises a liquid inlet degassing module comprising a first pipeline connected with a water tank, and a second pipeline connected with the water tank and a degassing chamber. The sewage filtering module comprises a third pipeline, and the third pipeline is connected with the degassing chamber and the sewage filter; the fourth pipeline is connected with the sewage filter and the drainage pipeline; the disinfection module comprises a fifth pipeline, and the fifth pipeline is connected with a disinfection pump; and the sixth pipeline is connected with the disinfection pump and the water tank. The pollution discharge and purification device of the full-automatic hemodialysis equipment solves the technical problem that sewers are severely blocked and have peculiar smell after existing hemodialysis equipment is used for a period of time, waste liquid discharged by the hemodialysis equipment is purified and filtered, organic substances such as protein and fat in the waste liquid are removed, and the pollution discharge and purification effect is good. Therefore, the phenomena of sewer blockage and peculiar smell are prevented.

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 disinfection, which cannot remove organic substances. Some devices use sodium hypochlorite disinfection, which brings organic substances out of the equipment and discharges them into the sewer during disinfection. However, no matter which disinfectant is used, the concentration after excluding the hemodialysis equipment is no longer able to effectively remove the organic substances in the sewer.

[0003] When the hemodialysis equipment performs dialysis treatment for patients, the equipment will discharge the waste liquid in real time. There are two existing sewage discharge methods. 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 leads to 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 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] 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, and a first filter, a degassing valve, a degassing pump and a 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 and RO water, the conductivity sensor and the conductivity monitoring sensor are both used for monitoring 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 comprises: 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] Correspondingly, the technical solution of the present invention further provides a method for purifying wastewater from a fully automatic hemodialysis device, which is applied to any of the above-mentioned devices for purifying wastewater from a fully automatic hemodialysis device, and the method for purifying wastewater from a fully automatic hemodialysis device comprises:

[0022] The control system controls the entire device to start up and perform self-checks at a set time to ensure that the liquid inlet degassing module, the sewage filtration module, and the disinfection module operate normally;

[0023] After the self-check of the whole 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 enters the degassing valve after being filtered by the filter, and the flow rate of the waste liquid in the second pipeline is increased by contraction and flow restriction through the flow-limiting 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, and 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 at a set time and perform a self-check step, which includes:

[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 detected by the conductivity sensor and the conductivity monitoring sensor.

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

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

[0033] The control system controls the first pipeline to be opened, and the 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 second pipeline is controlled to be opened, and the degassing pump is started at the same time. The RO water in the water tank enters the degassing valve after being filtered by the first filter, and the flow rate of the RO water in the second pipeline is increased by contraction and flow restriction through the flow limiting hole in the degassing valve. The gas in the RO water expands into bubbles and enters the degassing chamber with the RO water. The bubbles in the degassing chamber are concentrated and 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 overall device.

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

[0036] Confirm the liquid level of the water tank. After there is no water in the water tank, the disinfectant enters the water tank through the fifth pipeline. When the liquid level of the disinfectant in the water tank reaches a certain height, stop inputting the disinfectant, control the second pipeline to open, discharge the disinfectant in the water tank, input RO water into the water tank, and mix in a certain proportion to obtain a diluted disinfectant;

[0037] The degassing pump is started, and the gas in the disinfectant expands into bubbles and enters the degassing chamber with the disinfectant. The bubbles in the degassing chamber are concentrated and discharged to the sewer. The disinfectant enters the degassing valve after being filtered by the second filter. The degassing pump is started, and the gas in the disinfectant expands into bubbles and enters the degassing chamber with the disinfectant. The bubbles in the degassing chamber are concentrated and discharged to the sewer. After the gas in the disinfectant released in the degassing chamber is discharged, the third pipeline and the fourth pipeline are controlled to be opened, 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 is at 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 whole device are filled with disinfectant, and close the RO water valve. At this time, the disinfectant circulates in the various pipes in the whole device, and the mixing chamber continues to mix RO water and sodium hypochlorite, dilute with sodium hypochlorite solution, and the disinfectant circulates in the various pipes in the whole device for a certain period of time before being discharged to the sewer, completing the disinfection of various pipes in the whole device.

[0039] Preferably, the first pipeline is controlled to be opened, RO water is input into the first pipeline to flush each pipeline, and after 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 overall device to the drainage pipeline, and then discharge it to the sewer through the drainage pipeline to empty each pipeline in the overall 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 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, flush, disinfect and empty the various pipelines inside the overall device, and maintain normal operation before the next activation of the hemodialysis equipment, ensuring the continuous purification and filtration of the waste liquid discharged during the operation of the hemodialysis equipment. The fully automatic sewage purification method for hemodialysis equipment used in the present invention also has the above beneficial effects.

[0042] (2) The overall device of the present invention will perform a self-check before operation to ensure the normal operation of the liquid inlet degassing module, the sewage filtration module and the disinfection module, to prevent blockage and other risks when purifying and filtering the waste liquid, and to promptly remind the staff to check and handle the waste liquid discharged from the hemodialysis equipment during operation. The fully automatic hemodialysis equipment sewage purification method used 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying 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 a circuit module of a sewage purification device provided by an embodiment of the present invention;

[0046] Figure 3 A schematic diagram of the circuit module division of the sewage purification device provided in 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-liquid discharge 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-drain pipeline; 241-flow pump; 242-pipeline detection sensor; 243-drain 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;

[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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0052] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with 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: a liquid inlet degassing module 100, a sewage filtering 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 arranged in the water tank 130, and the connection and closing between the first pipeline 110 and the water tank 130 can be controlled by the water tank inlet valve 131, 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 arranged 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, the degassing valve 122, the degassing pump 124 and the degassing pressure sensor 123 are arranged in the second pipeline 120 in sequence. 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] Among them, a flow-limiting hole is provided in the degassing valve 122. When the degassing valve 122 is closed, the waste liquid 180 can only flow through the flow-limiting hole. The inner diameter of the flow-limiting hole is smaller than the inner diameter of the degassing valve 122, so that it can shrink and limit the flow to increase the flow rate of the waste liquid 180 in the second pipeline 120, which is convenient for degassing the waste liquid 180. When the degassing valve 122 is opened, the fluidity of the liquid can be 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-limiting 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. A degassing chamber 170 liquid level sensor is arranged 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 the gas. In addition, a pre-filter valve 214 and a post-filter valve 222 are arranged in the third pipeline 210. The third pipeline 210 is closed by closing the pre-filter valve 214. 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. At the same time, the gas in the degassing chamber 170 is discharged, which can prevent excessive gas from accumulating in the sewage filter due to the inability to pass through the sewage filter, thereby ensuring that the sewage filter can efficiently filter the waste liquid 180. When the filter valve is opened to connect the third pipeline 210, the waste liquid 180 enters the sewage filter through the third pipeline 210, and the waste liquid 180 is filtered and purified by the sewage filter. In addition, a pre-filter pressure sensor 215 is set in the third pipeline 210, and a post-filter pressure sensor 221 is set in the third pipeline 210. The pre-filter pressure sensor 215 and the post-filter pressure sensor 221 are respectively used to detect the pressure at their locations.

[0057] It should be noted that a filter membrane is provided in the sewage filter, through which microorganisms, lipids, proteins and other organic substances in the waste liquid 180, particles in the dialysate, silica particles in the water channel of the hemodialysis equipment, and disinfectant impurities are intercepted in the filter membrane, and 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, 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 drain 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 drain valve 243 is used to control the on-off of the pipeline. The drainage pipeline 240 is connected to the sewer 250. The waste liquid 180 after being filtered by the sewage filter 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 a 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 a water tank 130. The disinfectant is transported to the water tank 130 through the disinfection pump 320. A second filter 311 is arranged 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 adopts a sodium hypochlorite solution. The mass percentage of the disinfectant to the RO water is 1 to 9. Then, the diluted disinfectant in the water tank 130 is 0.5% sodium hypochlorite. The disinfectant is used to disinfect each pipeline in the overall 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, the eighth pipeline 332 is connected to the disinfection pump, after starting the disinfection pump, RO water can be transported to the disinfection pump through the eighth pipeline 332, and the RO water forms a water film through the ceramic pump chamber to lubricate and reduce 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 pump 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, so that the disinfectant circulates 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 to realize the intelligence and automation of the sewage purification device.

[0062] When in use, the control system controls the entire device to start up and perform self-inspection 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-inspection 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 second pipeline 120 is controlled to open, and the degassing pump 124 is started at the same time, and 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 is limited by the flow limiting hole in the degassing valve 122 to increase the flow of the waste liquid 180 in the second pipeline. 120, the gas in the waste liquid 180 expands into bubbles and enters the degassing chamber 170 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 through the third pipeline 210, and the waste liquid 180 after purification by the sewage filter 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 overall device to start the self-cleaning mode, and flushes, disinfects and empties each pipeline in the overall device in turn.

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

[0064] In addition, an inlet valve 111, a pressure reducing valve 112 and a water inlet pressure sensor 113 are sequentially arranged in the first pipeline 110. The inlet valve 111 is used to control the on-off of the first pipeline 110. When the inlet valve 111 is opened, the waste liquid 180 discharged from the hemodialysis equipment can enter the first pipeline 110. In addition, an RO water inlet pipeline 140 is arranged at the first end position of the first pipeline 110. When RO water needs to be input into the water tank 130, the inlet valve 111 is closed to ensure that the RO water can enter the inner water tank 130 instead of entering the hemodialysis equipment. An RO valve and a first non-return valve 142 are sequentially arranged in the RO water inlet pipeline 140. The on-off of the RO water inlet pipeline 140 is controlled by the RO valve, and the first non-return 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 arranged 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 arranged 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 each pipeline 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 arranged 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 sufficiently 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 overall 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, the mainboard layer 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. Among them, the communication layer includes: a liquid crystal touch screen, the liquid crystal touch screen is used to generate display images and serve as a user operation interface; a liquid crystal touch screen controller, the liquid crystal touch screen controller is used to interpret the user's touch signal; a backlight inverter circuit, the backlight inverter circuit is used to provide light power for the screen; a first signal light circuit board and a second signal light circuit board, the first signal light circuit board and the second signal light circuit board are respectively used to display the operating status of the overall device; an upper panel, the upper panel is connected to the liquid crystal touch screen, the first signal light circuit board and the second signal light circuit board, and the upper panel is connected to a speaker.

[0068] The mainboard layer includes: a mainboard, on which a port component and a central processing unit are arranged, the port component including a plurality of communication ports, the plurality of communication ports being used for input and output through a liquid crystal touch screen, and the port component connecting the communication layer and the basic layer, and the central processing unit being used for controlling and monitoring the whole 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, 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, so as to respectively control the start and stop of the degassing pump 124, the flow pump 241 and the disinfection pump 320, 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 the analog board includes: a second control unit and a second monitoring unit, and the second control unit and the second monitoring unit are respectively connected to the liquid 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-filter pressure sensor 215, the post-filter 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-filter valve 214, the post-filter 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 overall device is completed, the overall device is automatically controlled by a preset program to enter the sewage purification program on standby. 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 opened to facilitate the overall device to 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: one end of the first pipeline 110 is connected 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 used to The degassing pressure sensor 123 measures a pressure of -500 mmHg. The waste liquid 180 in the water tank 130 is filtered by the first filter 121 and then enters the degassing valve 122. The flow rate of the waste liquid 180 in the second pipeline 120 is increased by contraction of the flow limiting hole in the degassing valve 122. The gas in the waste liquid 180 expands into bubbles and enters the degassing chamber 170 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 filter valve 216 are controlled to open. The back valve 222, that is, the third pipeline 210 and the fourth pipeline 220 are opened, and the filter bypass valve 232 is controlled to be closed, 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 working safety of the hemodialysis equipment. The flow pump 241 operates at 1800 rpm, and the waste liquid 180 enters the sewage filter through the third pipeline 210. The filter has a pre-filtration pressure of 450 mmHg. After being purified by the sewage filter, the waste liquid 180 enters the drainage pipeline 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 waste liquid 180 after purification and filtration is discharged to the sewer 250 through the drainage pipeline 240 to complete the treatment of the waste liquid 180. After the hemodialysis equipment stops working, the control system controls the overall device to start the self-cleaning mode, and flushes, disinfects, and empties each pipeline in the overall device in turn. It should be noted that the sewage purification method of 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 permeability of the waste liquid 180 measured by the pipeline detection sensor 242 must be greater than 50, and the waste liquid 180 is discharged into the hospital sewer 250 through the drain valve 243. In addition, when the liquid level sensor of the water tank 130 detects that the liquid level in the water tank 130 is low, the degassing pump 124 is turned off by controlling, and the degassing pump 124 is turned on after the liquid level of the waste liquid 180 in the water tank 130 reaches a certain height, which can effectively avoid the pump from running idle and reduce the probability of failure.

[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-checking 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 action, and monitoring the opening and closing action through the digital board. If it is found that the instruction and the action are inconsistent, a re-check is performed. If the second self-check fails, an alarm is given through the speaker.

[0076] Each sensor detects that before RO water is input into each pipeline and each pipeline is connected to the atmosphere outside the overall device, the pressure detected in each pipeline is set to zero. Specifically, except for the disinfection valve 331, the RO water valve 141 and the liquid inlet valve 111, the other valves are opened. At this time, each pipeline in the overall device is connected to the atmosphere, and the conductivity sensor 212, the conductivity monitoring sensor 213, the pipeline detection sensor 242, the pre-filter pressure sensor 215, the post-filter pressure sensor 221, the degassing pressure sensor 123 and the bypass pressure sensor 231 are all about 0mmHg. When the pressure value detected by each sensor differs from 0mmHg 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 triggered to prompt the staff to perform correction processing. In addition, the liquid level in the water tank 130 should be at a low level. If the second control unit and the second monitoring unit do not match the monitored position, an alarm is triggered to prompt the staff to perform processing.

[0077] Water circuit 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 is blocked. Specifically, the 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 triggered. 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 is triggered.

[0078] It should be noted that when the RO water level in the water tank 130 is at a high water level, 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, and the main board sends a signal to open the water tank valve 132 and close the water tank water inlet valve 131 to the digital board, and drives the water tank valve 132 to open and close the water tank water inlet valve 131 through the valve power board. 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 is at a high water level, and this cycle repeats.

[0079] When RO water passes through the degassing valve 122, the degassing valve 122 is in a closed state, and water can only pass through the flow limiting hole in the degassing valve 122. The digital board controls and monitors the degassing pump 124, and the degassing pump 124 operates at 2200rpm. If the speed does not match, an alarm is triggered. The pressure at the location measured by the degassing pressure sensor 123 is normally -500mmHg. When the pressure value detected by the degassing pressure sensor 123 differs from -500mmHg 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 triggered. Water passes through the degassing chamber 170 to discharge air, 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] The conductivity sensor 212 and the conductivity monitoring sensor 213 monitor that after the RO water fills the water tank 130 and each pipeline, the conductivity of the RO water is detected by the conductivity sensor 212 and the conductivity monitoring sensor 213. After the RO water fills the water tank 130 and each pipeline in the overall device, the conductivity sensor 212 and the conductivity monitoring sensor 213 are both 0Ms / cm. If the conductivity measured by the second control unit and the second monitoring unit differ by ±0.5, an alarm is triggered. The data detected by the conductivity sensor 212 and the conductivity monitoring sensor 213 are transmitted by the analog board to the first control unit and the first monitoring unit on the digital board, and further transmitted to the main board layer and the communication layer.

[0081] Sewage filter detection, after RO water fills the water tank 130 and each pipeline in the whole device, the post-filter valve 222 is closed. At this time, the pre-filter pressure is about 450mmHg, and the filter bypass pressure is about 450mmHg. At this time, the permeability of the filter membrane is good. When the pressure value detected by the pre-filter pressure sensor 215 differs from 450mmHg 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 triggered. In addition, if the pre-filter pressure and the filter bypass pressure differ by more than 20mmHg, it means that the membrane is blocked, and an alarm is triggered.

[0082] The inlet valve 111, the circulation bypass valve 161, the degassing valve 122, the drain valve 151, the air solenoid valve 262, the filter bypass valve 232, the disinfection valve 331 and the disinfection pump 320 are controlled to be closed, and other components are opened. The RO water fills the water tank 130 and each pipeline in the overall device, and the pre-filter valve 214 is closed. At this time, the fourth pipeline 220 is a closed pipeline, and the flow pump 241 continues to work at 1800rpm. The post-filter pressure is measured to be -400mmHg, which is determined as the first absolute value. The air solenoid valve 262 is opened, and the air enters the third pipeline 210 from the first air inlet pipeline 260, and enters the fourth pipeline 220 through the sewage filter. The air presses the RO water in the post-filter direction, and the post-filter pressure is measured to be -200mmHg, which is determined as the second absolute value. The first absolute value minus the second absolute value should be greater than 100mmHg, otherwise it is determined that the sewage filter is blocked, and an alarm is triggered to prompt the staff to handle it. In addition, the flow pump 241 and the drain valve 243 are controlled to be closed for five seconds, and the pressure after filtration is measured to be -200 mmHg, which is determined as the third absolute value. The second absolute value minus the third absolute value should be less than 50 mmHg, otherwise it is determined that the sewage filter is leaking. It should be noted that the self-test of the flow pump 241 is 1800 rpm, and the digital board controls and monitors the speed of the flow pump 241. If the speed does not meet the requirements, an alarm is issued.

[0083] Pipeline detection, control to close 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, open other components, RO water fills the water tank 130 and each pipeline in the overall device, at this time the pipeline detection sensor 242 is filled with RO water, the transmittance of RO water is detected to be 100, if the transmittance of RO water is less than 70 or the value drift is unstable within 10 seconds, an alarm will be issued to prompt the staff to perform correction processing.

[0084] It should be noted that after the overall device completes circuit detection, water pressure detection, various sensor detection, conductivity sensor 212 and conductivity monitoring sensor 213 monitoring, sewage filter detection and pipeline detection, the measured data is transmitted from the digital board to the main board, and the main board determines whether it is qualified. If it is judged to be abnormal, the upper panel controls the first signal control board and the second signal control board to sound an alarm. All valves in the equipment are clamped, the motor stops working, and the alarm information and the 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 overall device action.

[0085] At the same time, during the sewage purification process of the overall device, the data of each sensor in the overall 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 determines that it is abnormal and controls the first signal control board and the second signal control board through the upper panel to sound an alarm. The degassing pump, disinfection pump and flow pump in the overall 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, the LCD touch screen is used to perform reset and other operations. 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 overall device in sequence include: the control system controls the overall 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 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 100-700 kPa. After the RO water passes through the pressure reducing valve 112, it is 350 mmHg. 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 limiting hole of the degassing valve 122, the degassing valve 123, the degassing valve 124, the degassing valve 125, the degassing valve 126, the degassing valve 127, the degassing valve 128, the degassing valve 129, the degassing valve 130, the degassing valve 131, the degassing valve 132 ...1, the degassing valve 132, the degassing valve 131, the degassing valve 131, the degass The air pressure sensor 123 enters the degassing chamber 170. When the liquid level sensor of the water tank 130 changes to the middle liquid level, the water tank inlet valve 131 is controlled to open and inlet water to the high water level. This is repeated to ensure that the liquid level in the water tank 130 is always above the middle liquid level to prevent the degassing pump 124 from running idle. The pressure of RO water is -500 mmHg when it passes through the degassing pressure sensor 123. The degassing pump 124 runs at 2200 rpm. After the RO water is exhausted through the degassing chamber 170, it enters the mixing chamber 211, the conductivity sensor and the monitoring sensor in turn. The flow pump 241 runs 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-filter valve 214, the pre-filter 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 sewage filter membrane and the membrane pores are effectively flushed to pre-eliminate impurities such as organic matter in the sewage filter. RO water passes through the pipeline detection sensor 242. At this time, flushing the sewage filter will bring out a large amount of impurities. The pipeline detection sensor 242 measures that the permeability should be 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, the degassing pump 124, the flow pump 241, the post-filter valve 222 and the filter bypass valve 232 are controlled to be closed, and the liquid inlet valve 111 and the circulation bypass valve 161 are opened to flush the circulation pipeline 160. Because the hemodialysis equipment has been closed, the RO water cannot be flushed into the equipment through the equipment drain pipe. The flow pump 241, the post-filter valve 222 and the filter bypass valve 232 are closed, and the water flushed in the circulation pipeline 160 enters the sewer 250 through the drain valve 243. Finally, the pipeline is emptied, and the inlet valve and the RO water valve 141 are closed. At this time, the water in the bypass pipe flows into the sewer 250 by gravity. Control to 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 overall device in sequence include: confirming the liquid level of the water tank 130, after there is no water in the water tank 130, opening the RO water valve 141, the disinfection valve 331 and the disinfection pump 320, closing 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, and 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, the disinfection valve 331 and the disinfection pump 320 are controlled. 0, open the water tank valve 132, start the degassing pump 124 to operate at 2000rpm, sodium hypochlorite enters the second pipeline 120 from the water tank 130, control the opening of the post-filter valve 222 and close the post-filter bypass valve, 10 seconds later, control the closing of the post-filter valve 222 and open the post-filter bypass valve, in this way, the flow pump 241 operates at 1800rpm, control the closing of the drain valve 243, open the circulation bypass valve 161 and the inlet valve 111, and at the same time, the water tank inlet valve 131 is opened, RO water enters the water tank 130, when the liquid level in the water tank 130 is the highest level, close the water tank inlet valve 131, and 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 pipeline, the disinfectant and RO water are 1:9, the volume of the water tank 130 is 60ml, and the total water channel volume is 540 ml, after this process is repeated 9 times, each pipeline in the whole device can be filled with disinfectant, and the RO water valve 141 is closed. At this time, the disinfectant circulates in each pipeline in the whole device, and the mixing chamber 211 continues to mix RO water and sodium hypochlorite to obtain a 0.5% sodium hypochlorite solution. After circulating in each pipeline in the whole device for a certain period of time, the disinfectant after flushing each pipeline in the whole device enters the drainage pipeline 240, is discharged to the circulation pipeline 160 through the drainage pipeline 240, and enters the first pipeline 110 through the circulation pipeline 160 for circulation. After the disinfectant circulates in each pipeline in the whole device for a certain period of time, it is discharged to the sewer 250, completing the disinfection of the whole device. In addition, after the disinfectant is discharged into the sewer 250, the waste liquid discharged into the sewer 250 during the flushing stage can be cleaned and disinfected, further preventing the problem of blockage in the sewer.

[0089] It should be noted that after 3 minutes of circulation, the device checks the liquid level sensor of the degassing chamber 170. Since the circulating liquid has been degassed for 3 minutes, it is normal for the liquid level in the degassing chamber 170 to be in a high liquid level closed state. If the data obtained by the second control unit or the second monitoring unit does not meet the requirements, an alarm will be triggered. In addition, when there is a leak in each pipeline in the overall device, the degassing valve 122 is opened to increase the permeability of the liquid without current limiting. The device determines whether the concentration of the disinfectant meets the requirements through conductivity. The conductivity of the disinfectant should be greater than 20Ms / cm when it circulates in each pipeline in the overall device. If it does not meet the requirements, an alarm will be triggered to remind the staff that the concentration of the disinfectant is not enough.

[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 be opened, 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, and the post-filter valve 222 is controlled to be opened and the post-filter bypass valve is closed. After 10 seconds, the post-filter valve 222 is controlled to be closed 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 be closed 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 overall device to the drainage pipeline 240, and discharge it to the sewer 250 through the drainage pipeline 240 to empty each pipeline in the overall 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 power failure of the equipment. The hemodialysis equipment can also realize the non-purified drainage function when treating patients.

[0092] In summary, the waste liquid 180 discharged from the hemodialysis equipment during operation 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 from the hemodialysis equipment during operation.

[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 in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A sewage purification device for 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, and a first filter, a degassing valve, a degassing pump and a degassing pressure sensor are sequentially arranged in the second pipeline; 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 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: The first pipeline is provided with an inlet valve, a pressure reducing valve and an inlet water pressure sensor in sequence, a RO water inlet pipeline is provided at the first end of the first pipeline, and an RO valve and a first non-return valve are provided in the RO water inlet pipeline in sequence.

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 for mixing disinfectant and RO water. The conductivity sensor and the conductivity monitoring sensor are both used for monitoring 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-checks at a set time to ensure that the liquid inlet degassing module, the sewage filtration module, and the disinfection module operate normally; After the self-check of the whole 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 enters the degassing valve after being filtered by the filter, and the flow rate of the waste liquid in the second pipeline is increased by contraction and flow restriction through the flow-limiting 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, and 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. A method for purifying wastewater from fully automatic hemodialysis equipment according to claim 6, characterized in that: The control system controls the whole device to start up at a set time and perform a self-test step, including: 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 detected by the conductivity sensor and the conductivity monitoring sensor.

8. A method for purifying wastewater from fully automatic hemodialysis equipment according to claim 6, characterized in that: The steps of flushing, disinfecting and emptying each pipeline in the overall device in sequence include: The control system controls the entire device to start a self-cleaning mode; The control system controls the first pipeline to be opened, and the 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 second pipeline is controlled to be opened, and the degassing pump is started at the same time. The RO water in the water tank enters the degassing valve after being filtered by the first filter, and the flow rate of the RO water in the second pipeline is increased by contraction and flow restriction through the flow limiting hole in the degassing valve. The gas in the RO water expands into bubbles and enters the degassing chamber with the RO water. The bubbles in the degassing chamber are concentrated and 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 overall device.

9. A method for purifying wastewater from fully automatic hemodialysis equipment according to claim 6, characterized in that: The steps of flushing, disinfecting and emptying each pipeline in the overall device in sequence include: Confirm the liquid level of the water tank. After there is no water in the water tank, the disinfectant enters the water tank through the fifth pipeline. When the liquid level of the disinfectant in the water tank reaches a certain height, stop inputting the disinfectant, control the second pipeline to open, discharge the disinfectant in the water tank, input RO water into the water tank, and mix in a certain proportion to obtain a diluted disinfectant; The degassing pump is started, and the gas in the disinfectant expands into bubbles and enters the degassing chamber with the disinfectant. The bubbles in the degassing chamber are concentrated and discharged to the sewer. The disinfectant enters the degassing valve after being filtered by the second filter. The degassing pump is started, and the gas in the disinfectant expands into bubbles and enters the degassing chamber with the disinfectant. The bubbles in the degassing chamber are concentrated and discharged to the sewer. After the gas in the disinfectant released in the degassing chamber is discharged, the third pipeline and the fourth pipeline are controlled to be opened, 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 is at 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 whole device are filled with disinfectant, and close the RO water valve. At this time, the disinfectant circulates in the various pipes in the whole device, and the mixing chamber continues to mix RO water and sodium hypochlorite, dilute with sodium hypochlorite solution, and the disinfectant circulates in the various pipes in the whole device for a certain period of time before being discharged to the sewer, completing the disinfection of various pipes in the whole 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 whole device to the drainage pipeline, and discharge it to the sewer through the drainage pipeline to empty each pipeline in the whole device.

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