CN111888556B - A hemodialysis machine - Google Patents

Abstract

The utility model relates to a medical equipment technical field specifically discloses a hemodialysis machine, including hemodialysis machine body and transport vechicle, hemodialysis machine body is placed in the transport vechicle, is fixed with the protection section of thick bamboo in the transport vechicle, and the periphery at hemodialysis machine body is established to the protection section of thick bamboo cover, is fixed with the gasbag on the inside wall of protection section of thick bamboo, is provided with one-way admission valve and one-way air outlet valve on the gasbag, and one-way air outlet valve has the gas holder through the pipe connection, and the exit end of gas holder is connected with venturi through the automatic valve, and venturi's throat is connected with the antiseptic solution through the straw, and venturi's diffusion section is connected with the shower nozzle, and the shower nozzle is located directly over the hemodialysis machine body; the upper portion of hemodialysis machine body is provided with disinfection button, and automatic valve and disinfection button electric connection. The purpose of this patent is to solve the problem that hemodialysis machine produces vibration easily in the in-process of transportation.

Description

A hemodialysis machine

technical field

The invention relates to the technical field of medical equipment, in particular to a hemodialysis machine.

Background technique

Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains the blood from the body to the outside of the body through a dialyzer composed of countless hollow fibers. The blood and the electrolyte solution (dialysate) with a similar concentration to the body are exchanged through diffusion/convection inside and outside the hollow fibers. , remove metabolic waste from the body, maintain electrolyte and acid-base balance; remove excess water from the body at the same time, and return the purified blood to the entire process called hemodialysis.

Existing hemodialysis machines can only be used in wards because they are relatively bulky, and cannot meet the needs of patients when they need to undergo hemodialysis during transportation. And the hemodialysis machine is placed in the car, the hemodialysis machine is prone to shaking, which affects the normal work of the hemodialysis machine on the one hand, and on the other hand the vibration of the hemodialysis machine produces noise, which is not conducive to the treatment of patients.

Moreover, blood or other liquids are easily splashed on the hemodialysis machine during use, and medical staff are easily infected with bacteria and viruses during operation. Therefore, the hemodialysis machine needs to be frequently sterilized.

In addition, the use time of the hemodialysis machine is generally 2-3 hours each time. The fan of the hemodialysis machine is easily damaged due to long-term use of the hemodialysis machine. Once the fan fails, the hemodialysis machine cannot work normally, which will bring danger to the patient.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem solved by the present invention is to provide a hemodialysis machine to solve the problem that the hemodialysis machine is prone to vibration during transportation.

In order to solve the above-mentioned problems, the technical solution adopted in the present invention is: a hemodialysis machine, including a hemodialysis machine body, a screen and control buttons are arranged on the upper part of the hemodialysis machine body, and a transport vehicle is provided at the bottom of the transport vehicle. wheels, the hemodialysis machine body is placed on the inner bottom of the transport vehicle, a protective tube is fixed on the inner bottom of the transport vehicle, the protective tube is sleeved on the outer periphery of the hemodialysis machine body, and an air bag is fixed on the inner wall of the protective tube. The airbag is provided with a one-way inlet valve and a one-way outlet valve, the one-way inlet valve communicates with the outside world, the one-way outlet valve is connected to an air storage tank through a pipeline, and the outlet end of the air storage tank is connected to the air tank through an automatic valve. There is a Venturi tube, the Venturi tube includes an inlet section, a throat and a diffusion section, the throat of the Venturi tube is connected to a disinfectant through a straw, and the diffusion section of the Venturi tube is connected to a nozzle, which is located directly above the hemodialysis machine body The upper part of the hemodialysis machine body is provided with a disinfection button, and the automatic valve is electrically connected to the disinfection button. Press the disinfection button once to open the automatic valve, and then press the disinfection button to close the automatic valve.

The technical principle of this technical solution is:

Set up a transport vehicle, place the hemodialysis machine on the transport vehicle, so that patients can perform hemodialysis during transportation; set up an air bag, the shape of the air bag is ellipsoidal, when the air bag is squeezed, the air bag will be deformed, and one-way air intake The valve is closed, the one-way air outlet valve is opened, and the airbag discharges gas; when the extrusion force disappears, the airbag resets under its own elastic force. External air; the airbag acts as a pump by intermittently inhaling and exhaling. During the shaking of the hemodialysis machine body, the air bag will be squeezed and released repeatedly, and the air bag can also play a role in buffering the hemodialysis machine body, reducing the shaking of the hemodialysis machine and reducing the noise generated by the shaking of the hemodialysis machine. Set the gas storage tank and venturi tube, the gas discharged from the air bag is stored in the gas storage tank and compressed in the gas storage tank, the compressed gas is generated in the gas storage tank, press the disinfection button, the automatic valve opens, and the gas storage tank is discharged The compressed gas enters the Venturi tube, the Venturi tube flows through the high-speed gas, the throat of the Venturi tube generates negative pressure, the throat of the Venturi tube sucks the disinfectant through the straw, and the disinfectant and gas mixture are atomized through the nozzle A disinfectant spray is formed, and the disinfectant spray is sprayed on the screen and buttons of the hemodialysis machine body to sterilize the screen and buttons of the hemodialysis machine body. Start storing gas. The beneficial effects of this program are:

Compared with the existing hemodialysis machine, the existing hemodialysis machine can only be used in the ward due to its bulkiness. When the patient needs to undergo hemodialysis on the way of transportation, it cannot meet the needs of the patient, and the hemodialysis machine is placed in the In the car, the hemodialysis machine is prone to shaking, which affects the normal operation of the hemodialysis machine on the one hand, and on the other hand, the vibration of the hemodialysis machine produces noise, which is not conducive to the treatment of patients; and the hemodialysis machine in the application scheme is placed on the transport vehicle , which is convenient for the patient to use during transportation, and the airbag acts as a buffer for the hemodialysis machine, reducing the noise caused by the shaking of the hemodialysis machine. At the same time, the hemodialysis machine repeatedly squeezes and releases the airbag to make the airbag form an inflator , the gas discharged from the airbag is stored in the gas storage tank. When the screen and buttons of the hemodialysis machine body need to be sterilized, the medical staff press the disinfection button, and the hemodialysis machine can be automatically sterilized to prevent the medical staff from being infected by bacteria and viruses. Infect.

Further, the number of the airbags is set to 2-6 and is evenly distributed around the axis of the protective cylinder.

Setting 2-6 airbags can enhance the buffering and noise reduction effects on the hemodialysis machine body, and at the same time can increase the amount of gas entering the gas storage tank to better meet the needs of the Venturi tube.

Further, the suction pipe is a first three-way pipe, a first automatic three-way valve is arranged at the intersection of the three branches of the first three-way pipe, and the other branch of the first three-way pipe is connected to a water source; the Venturi The diffuser section of the tube is connected to the spray head through the second three-way pipe, and a second automatic three-way valve is arranged at the intersection of the three branches of the second three-way pipe, and a heat exchange tube is arranged inside the body of the hemodialysis machine. The other branch of the two-way pipe is connected to the heat exchange tube inside the hemodialysis machine body, and the outlet end of the heat exchange tube is arranged at the bottom of the hemodialysis machine; a temperature sensor is arranged inside the hemodialysis machine body, and the temperature The sensor is electrically connected with the automatic valve, the first automatic three-way valve and the second automatic three-way valve through the controller. When the temperature detected by the temperature sensor exceeds the upper limit of the set value, the temperature sensor will open the automatic valve through the controller. At the same time, the first automatic three-way valve is switched to connect the water source with the throat of the Venturi tube, and the second automatic three-way valve is switched to connect the Venturi tube with the heat exchange tube inside the hemodialysis machine body; when the temperature sensor detects When the temperature is lower than the lower limit of the set value, the temperature sensor closes the automatic valve through the controller, and at the same time the first automatic three-way valve is switched to connect the disinfectant with the throat of the Venturi tube, and at the same time the second automatic three-way valve is switched to Connect the venturi tube to the nozzle.

When the cooling fan inside the hemodialysis machine fails and the temperature detected by the temperature sensor is higher than the upper limit of the set value, the temperature sensor will open the automatic valve through the controller, and at the same time, the first automatic three-way valve will switch to connect the water source with the Venturi. The inner tube throat is connected, and the second automatic three-way valve is switched to connect the venturi tube with the heat exchange tube inside the hemodialysis machine body; the high-speed flowing gas discharged from the gas storage tank enters the venturi tube, and the venturi tube Negative pressure is generated in the throat, and the throat of the Venturi tube absorbs water through the straw. The water is dispersed by the high-speed gas flowing in the Venturi tube to form small water droplets. The temperature of the air in the heat exchange tube inside the machine body can improve the heat dissipation effect of the hemodialysis machine body compared with the use of fans for heat dissipation; with the heat dissipation, the temperature inside the hemodialysis machine body gradually decreases. When the temperature sensor detects When the temperature is lower than the lower limit of the set value, the temperature sensor closes the automatic valve through the controller, and at the same time the first automatic three-way valve is switched to connect the disinfectant with the throat of the Venturi tube, and at the same time the second automatic three-way valve is switched to Connect the Venturi tube to the nozzle, and the compressed gas inside the gas storage tank can be used for automatic disinfection of the hemodialysis machine body. The hemodialysis machine can be switched between two working modes of heat dissipation and disinfection.

Further, the air storage tank is provided with a pressure relief valve.

When the gas pressure inside the gas storage tank exceeds the threshold value, the pressure relief valve will automatically open to release the pressure of the gas storage tank, so as to avoid the explosion inside the gas storage tank due to excessive gas pressure.

Further, the number of the nozzles is set to 2-4 and the intervals are evenly arranged directly above the hemodialysis machine body.

Setting 2-4 nozzles can cover the upper part of the whole hemodialysis machine body, increasing the comprehensive performance of disinfection.

Further, the water source is a water tank, and one end of the suction pipe connected to the water tank extends to the inner bottom of the water tank.

The water in the proposal of the present application is mainly used for cooling the air, so only a small amount of water is needed, which is convenient for transportation.

Description of drawings

Figure 1 is the overall structure diagram.

Detailed ways

The following is further described in detail through specific implementation methods:

The reference signs in the drawings of the description include: transport vehicle 10, wheels 11, hemodialysis machine body 20, screen 21 of hemodialysis machine body, disinfection button 22, control button 23 of hemodialysis machine body, protective cylinder 30, air bag 31 , one-way inlet valve 32, one-way outlet valve 33, connecting pipe 34, gas storage tank 40, pressure relief valve 41, automatic valve 42, Venturi tube 50, suction pipe 51, the first automatic three-way valve 52, the second Automatic three-way valve 53, nozzle 54, water tank 60, disinfectant solution tank 61.

Embodiment is shown in Figure 1 basically:

A hemodialysis machine includes a hemodialysis machine body 20 and a transport cart 10 .

As shown in Figure 1, the top of the hemodialysis machine body 20 is provided with the screen 21 of the hemodialysis machine body and the control button 23 of the hemodialysis machine body, the hemodialysis machine body 20 is placed on the inner bottom of the transport cart 10, and the transport cart 10 The bottom is provided with wheels 11, and the inner bottom of the transport vehicle 10 is fixed with a circular cylindrical protective tube 30. The axis of the protective tube 30 is arranged along the vertical direction. The protective tube 30 is sleeved on the outer periphery of the hemodialysis machine. An air bag 31 is fixed on the top, the shape of the air bag 31 is ellipsoid, the lower end of the air bag 31 is provided with a one-way air inlet valve 32, the upper end of the air bag 31 is provided with a one-way air outlet valve 33, and the one-way air inlet valve 32 passes through the pipeline and transport The outside of the bottom of the car 10 is connected; the number of airbags 31 is set to 4 and distributed uniformly around the axis of the protective tube 30, and the outlet ends of the one-way air outlet valve 33 of the 4 airbags 31 are connected with the same circular communication pipe 34 , an annular communicating pipe 34 is fixed on the mouth of the protective tube 30 , and the communicating tube 34 is coaxially arranged with the protective tube 30 .

The hemodialysis machine shakes during transportation and squeezes the airbag 31. When the airbag 31 is squeezed, the airbag 31 will be deformed, the one-way inlet valve 32 is closed, the one-way air outlet valve 33 is opened, and the airbag 31 discharges gas; When the extrusion force of the hemodialysis machine body 20 on the airbag 31 disappears, the airbag 31 resets under its own elastic force. During the reset process of the airbag 31, the one-way inlet valve 32 is opened, the one-way air outlet valve 33 is closed, and the airbag 31 Inhale external air; the airbag 31 is intermittently inhaled and exhausted, and plays the role of an inflator. At the same time, the airbag 31 can also play the role of buffering the hemodialysis machine body 20, reducing the shaking of the hemodialysis machine body 20, and at the same time reducing the noise generated by the hemodialysis machine body 20 shaking. In this embodiment, four airbags 31 are provided to enhance the buffering and noise reduction effects on the hemodialysis machine body 20, and at the same time increase the total amount of gas discharged by the airbags 31.

As shown in Figure 1, the connecting pipe 34 is connected with the gas storage tank 40 through the pipeline, the gas storage tank 40 is fixed on the top of the transport vehicle 10, and the outlet end of the gas storage tank 40 is connected with the venturi tube 50 through the automatic valve 42, and the venturi The pipe 50 includes an inlet section, a throat and a diffuser section. The outlet end of the gas storage tank 40 is connected to the inlet section of the Venturi tube 50. The throat of the Venturi tube 50 is connected with a suction pipe 51, which is a first three-way pipe. The intersection of the three branches of the first three-way pipe is provided with a first automatic three-way valve 52, and the other two branches of the first three-way pipe are connected with a water tank 60 and a disinfectant solution tank 61, and the water tank 60 and the disinfectant solution tank 61 Fixed inside the transport vehicle 10, one end of the suction pipe 51 connected to the water tank 60 extends to the inner bottom of the water tank 60, and one end of the suction pipe 51 connected to the disinfectant tank 61 extends to the inner bottom of the disinfectant tank 61; the diffusion section of the Venturi tube 50 is connected with The second three-way pipe, the intersection of the three branches of the second three-way pipe is provided with a second automatic three-way valve 53, the inside of the hemodialysis machine body 20 is provided with a heat exchange tube, and the outlet end of the heat exchange tube is arranged at the blood The bottom of the dialysis machine, the other two branches of the second three-way pipe are respectively connected with the heat exchange tube inside the hemodialysis machine body 20 and connected with the nozzle 54, the nozzle 54 is located directly above the hemodialysis machine body 20; the hemodialysis machine body There is a temperature sensor inside, and the temperature sensor is electrically connected with the automatic valve 42, the first automatic three-way valve 52, and the second automatic three-way valve 53 through the controller. When the temperature detected by the temperature sensor exceeds 70°C, the temperature The sensor opens the automatic valve 42 through the controller, and at the same time, the first automatic three-way valve 52 is switched to connect the water source with the venturi tube 50 throat, and the second automatic three-way valve 53 is switched to connect the venturi tube 50 to the hemodialysis machine. The internal heat exchange tubes are connected; when the temperature detected by the temperature sensor is lower than 60°C, the temperature sensor closes the automatic valve 42 through the controller, and at the same time the first automatic three-way valve 52 is switched to connect the disinfectant with the Venturi tube 50 throat. At the same time, the second automatic three-way valve 53 is switched to communicate the Venturi tube 50 with the spray head 54. The upper part of the hemodialysis machine body 20 is provided with a disinfection button 22, and the automatic valve 42 is electrically connected with the disinfection button 22. When the disinfection button 22 is pressed once, the automatic valve 42 is opened, and when the disinfection button 22 is pressed again, the automatic valve 42 is closed.

The gas discharged from the air bag 31 is stored in the gas storage tank 40 and compressed in the gas storage tank 40 , and the compressed gas is generated in the gas storage tank 40 .

Under normal circumstances, the automatic valve 42 is closed, the first automatic three-way valve 52 is switched to communicate the disinfectant with the venturi tube 50 throat, and the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the nozzle 54. When the hemodialysis machine body 20 needs to be sterilized, press the sterilizing button 22, the automatic valve 42 will open, and the compressed gas discharged from the gas storage tank 40 will enter the Venturi tube 50, and the high-speed flowing gas will flow through the Venturi tube 50, and the Venturi tube will The throat of the inner tube 50 generates negative pressure, and the throat of the Venturi tube 50 sucks the disinfectant through the suction pipe 51, and the disinfectant and gas mixture are atomized by the nozzle 54 to form a disinfectant spray, which is sprayed on the hemodialysis machine body. On the screen 21 and the buttons, the screen 21 and the buttons of the hemodialysis machine body are disinfected. After the disinfection is completed, the disinfection button 22 is pressed again, the automatic valve 42 is closed, and the gas storage tank 40 starts to store gas again.

When the cooling fan inside the hemodialysis machine body 20 breaks down and the temperature detected by the temperature sensor is higher than 70°C, the temperature sensor will open the automatic valve 42 through the controller, and at the same time, the first automatic three-way valve 52 will switch to connect the water source with the Venturi. The inner tube 50 is connected to the throat, and at the same time, the second automatic three-way valve 53 is switched to connect the venturi tube 50 with the heat exchange tube inside the hemodialysis machine body 20; In the process, the throat of the Venturi tube 50 generates negative pressure, and the throat of the Venturi tube 50 absorbs water through the suction pipe 51, and the water is dispersed by the gas flowing at high speed in the Venturi tube 50 to form small water droplets, and the air and the small water droplets are fully mixed, and the small water droplets The water droplets inhale the heat in the air, reduce the temperature of the air entering the heat exchange tube inside the hemodialysis machine body, and improve the heat dissipation effect of the hemodialysis machine body 20 compared with the heat dissipation of the hemodialysis machine body; along with the heat dissipation, the hemodialysis machine The temperature inside the body gradually decreases. When the temperature detected by the temperature sensor is lower than 60°C, the temperature sensor closes the automatic valve 42 through the controller, and at the same time the first automatic three-way valve 52 switches to connect the disinfectant with the Venturi tube 50 throat. At the same time, the second automatic three-way valve 53 switches to connect the Venturi tube 50 with the nozzle 54, and the compressed gas inside the gas storage tank 40 can be used for automatic disinfection of the hemodialysis machine body 20.

Since the water in the water tank 60 in the solution of the present application is mainly used for cooling the air, only a small amount of water is needed, which is convenient for transportation.

If the temperature inside the hemodialysis machine is still higher than 60° C. after the gas inside the gas storage tank 40 is exhausted, the automatic valve 42 remains open, and the gas discharged from the air bag 31 passes through the gas storage tank 40 and the venturi tube 50 directly. Discharge into the heat exchange tube of the hemodialysis machine body 20 to realize continuous heat dissipation of the hemodialysis machine body 20. The hemodialysis machine body 20 can continue to be used in a short time, and the fan needs to be shut down as soon as possible for maintenance.

The hemodialysis machine can be switched between two working modes of heat dissipation and disinfection.

In this embodiment, the number of nozzles 54 is set to 3 and the intervals are evenly arranged directly above the hemodialysis machine body 20. Setting 3 nozzles 54 can cover the entire upper part of the hemodialysis machine body 20, increasing the overall performance of disinfection.

In addition, as shown in FIG. 1 , a pressure relief valve 41 is provided on the air storage tank 40 . When the gas pressure inside the gas storage tank 40 exceeds 1 MPa, the pressure relief valve 41 is automatically opened to release the pressure of the gas storage tank 40, so as to prevent the explosion inside the gas storage tank 40 due to excessive gas pressure.

The specific implementation process is as follows:

In the initial state, the automatic valve 42 is closed, the first automatic three-way valve 52 is switched to communicate the disinfectant with the venturi tube 50 throat, and the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the nozzle 54.

The hemodialysis machine shakes during transportation and is squeezed into the airbag 31. The airbag 31 inhales and exhausts intermittently, acting as a pump, and the gas discharged from the airbag 31 is stored in the gas storage tank 40 to generate compressed gas.

When the hemodialysis machine body 20 needs to be sterilized, the disinfection button 22 is pressed, the automatic valve 42 is opened, and the compressed gas discharged from the gas storage tank 40 enters the Venturi tube 50, and the throat of the Venturi tube 50 generates negative pressure, and the Venturi tube 50 generates negative pressure. The throat of the inner tube 50 sucks the disinfectant through the suction pipe 51, and the disinfectant and the gas mixture are atomized by the nozzle 54 to form a disinfectant spray, and the disinfectant spray is sprayed on the screen 21 and the button of the hemodialysis machine body. The screen 21 and button of 20 are sterilized, and after the sterilizing is finished, press the sterilizing button 22 again, the automatic valve 42 is closed, and the gas storage tank 40 starts to store gas again.

When the cooling fan inside the hemodialysis machine body 20 breaks down and the temperature detected by the temperature sensor is higher than 70°C, the temperature sensor opens the automatic valve 42 through the controller, and at the same time the first automatic three-way valve 52 switches to connect the water tank 60 with the The venturi tube 50 is connected to the throat, and at the same time, the second automatic three-way valve 53 is switched to connect the venturi tube 50 with the heat exchange tube inside the hemodialysis machine body 20; the high-speed flowing gas discharged from the gas storage tank 40 enters the venturi tube In 50, the throat of Venturi tube 50 produces negative pressure, and the throat of Venturi tube 50 absorbs water through suction pipe 51, and the water sucks the heat in the air, reducing the temperature of the air entering the heat exchange tube inside the hemodialysis machine; As the heat dissipation progresses, the temperature inside the hemodialysis machine gradually decreases. When the temperature detected by the temperature sensor is lower than 60°C, the temperature sensor closes the automatic valve 42 through the controller, and at the same time, the first automatic three-way valve 52 switches to the disinfectant solution. It communicates with the venturi tube 50 throat, and at the same time, the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the spray head 54 .

The hemodialysis machine can be switched between two working modes of heat dissipation and disinfection.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, some modifications and improvements can also be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (6)

1. The utility model provides a hemodialysis machine, includes hemodialysis machine body, and the upper portion of hemodialysis machine body is provided with screen and control button, its characterized in that: the automatic cleaning device comprises a hemodialysis machine body, and is characterized by further comprising a transport vehicle, wherein wheels are arranged at the bottom of the transport vehicle, a protective cylinder is fixed at the bottom of the transport vehicle, the protective cylinder is sleeved on the periphery of the hemodialysis machine body, an air bag is fixed on the inner side wall of the protective cylinder, a one-way air inlet valve and a one-way air outlet valve are arranged on the air bag, the one-way air inlet valve is communicated with the outside, the one-way air outlet valve is connected with an air storage tank through a pipeline, the outlet end of the air storage tank is connected with a venturi tube through an automatic valve, the venturi tube comprises an inlet section, a throat section and a diffusion section, the throat section of the venturi tube is connected with disinfectant through a straw, and the diffusion section of the venturi tube is connected with a spray head which is positioned right above the hemodialysis machine body; the upper portion of hemodialysis machine body is provided with disinfection button, automatic valve and disinfection button electric connection, press the disinfection button, the automatic valve is opened, presses the disinfection button again, and the automatic valve is closed.

2. A hemodialysis machine according to claim 1, wherein: the number of air bags is set to 2-6 and is evenly distributed circumferentially about the axis of the protective cylinder.

3. A hemodialysis machine according to claim 1, wherein: the suction pipe is a first three-way pipe, a first automatic three-way valve is arranged at the junction of three branches of the first three-way pipe, and the other branch of the first three-way pipe is connected with a water source; the diffusion section of the venturi tube is connected with the spray head through a second three-way tube, a second automatic three-way valve is arranged at the junction of the three branches of the second three-way tube, a heat exchange tube is arranged in the hemodialysis machine body, the other branch of the second three-way tube is connected with the heat exchange tube in the hemodialysis machine body, and the outlet end of the heat exchange tube is arranged at the bottom of the hemodialysis machine; the temperature sensor is electrically connected with the automatic valve, the first automatic three-way valve and the second automatic three-way valve through the controller, when the temperature detected by the temperature sensor exceeds the upper limit of a set value, the temperature sensor enables the automatic valve to be opened through the controller, the first automatic three-way valve is switched to communicate a water source with the throat part of the venturi tube, and the second automatic three-way valve is switched to communicate the venturi tube with a heat exchange tube in the hemodialysis machine body; when the temperature detected by the temperature sensor is lower than the lower limit of the set value, the temperature sensor enables the automatic valve to be closed through the controller, meanwhile, the first automatic three-way valve is switched to be communicated with the disinfectant and the venturi throat, and meanwhile, the second automatic three-way valve is switched to be communicated with the venturi and the spray head.

4. A hemodialysis machine according to claim 1, wherein: and a pressure release valve is arranged on the air storage tank.

5. A hemodialysis machine according to claim 1, wherein: the number of the spray heads is set to 2-4, and the spray heads are uniformly arranged right above the hemodialysis machine body at intervals.

6. A hemodialysis machine according to claim 3, wherein: the water source is a water tank, and one end of the suction pipe connected with the water tank extends to the inner bottom of the water tank.

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