CN111888556B

CN111888556B - Hemodialysis machine

Info

Publication number: CN111888556B
Application number: CN202010864737.3A
Authority: CN
Inventors: 刘国跃; 钱明江; 陈武; 吴航; 殷存芝
Original assignee: Second Affiliated Hospital of Zunyi Medical University
Current assignee: Second Affiliated Hospital of Zunyi Medical University
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2023-07-04
Anticipated expiration: 2040-08-25
Also published as: CN111888556A

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

Hemodialysis machine

Technical Field

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

Background

Hemodialysis is one of the renal replacement therapy modes for patients with acute and chronic renal failure. The method comprises the steps of draining in-vivo blood to the outside of the body, passing through a dialyzer consisting of innumerable hollow fibers, wherein the blood and electrolyte solution (dialysate) with similar concentration of the body are in and out of the hollow fibers, and carrying out substance exchange by dispersion/convection to remove metabolic wastes in the body and maintain the balance of the electrolyte and acid and alkali; at the same time, the whole process of removing excessive water from the body and reinfusion of the purified blood is called hemodialysis.

The existing hemodialysis machine can only be used in a ward because of being relatively heavy, and can not meet the requirements of patients when the patients need to be subjected to hemodialysis during transportation. And the hemodialysis machine is placed in the vehicle, so that the hemodialysis machine is easy to shake, on one hand, the normal work of the hemodialysis machine is influenced, and on the other hand, the hemodialysis machine vibrates to generate noise, so that the treatment of a patient is not facilitated.

In addition, the hemodialysis machine is easy to splash blood or other liquid in the use process, and medical staff is easy to infect bacteria and viruses in the operation process, so that the hemodialysis machine is required to be disinfected frequently.

In addition, the time of each use of the hemodialysis machine is generally 2-3 hours, and the long-time use of the hemodialysis machine leads to easy damage of a fan of the hemodialysis machine, and once the fan fails, the hemodialysis machine cannot work normally, so that danger is brought to a patient.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the hemodialysis machine which solves the problem that the hemodialysis machine is easy to vibrate in the transportation process.

In order to solve the problems, the invention adopts the following technical scheme: the utility model provides a hemodialysis machine, includes hemodialysis machine body, and hemodialysis machine body's upper portion is provided with screen and control button, still includes the transport vechicle, and the bottom of transport vechicle is provided with the wheel, hemodialysis machine body is placed in transport vechicle bottom, be fixed with a protection section of thick bamboo in the transport vechicle, the periphery at hemodialysis machine body is established to the protection section of thick bamboo cover, be fixed with the gasbag on the inside wall of protection section of thick bamboo, be provided with one-way admission valve and one-way air outlet valve on the gasbag, one-way admission valve communicates with the external world, 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 includes entrance, throat and diffusion section, 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, 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.

The technical principle of the technical scheme is as follows:

the transport vehicle is arranged, and the hemodialysis machine is placed on the transport vehicle, so that a patient can carry out hemodialysis conveniently in the transport process; the air bag is arranged, the air bag is in an ellipsoidal shape, when the air bag is extruded, the air bag can deform, the one-way air inlet valve is closed, the one-way air outlet valve is opened, and the air bag discharges air; when the extrusion force is lost, the air bag resets under the action of self elasticity, and in the resetting process of the air bag, the one-way air inlet valve is opened, the one-way air outlet valve is closed, and the air bag sucks external air; the air bag intermittently sucks and exhausts air to play the role of an inflator. The gasbag can be extruded repeatedly and loosen to the in-process that hemodialysis machine body rocked, and the gasbag also can play the effect to hemodialysis machine body buffering simultaneously, reduces the rocking of hemodialysis machine, reduces the noise that hemodialysis machine rocked the production simultaneously. The automatic valve is opened, compressed gas discharged from the gas storage tank enters the venturi tube, the venturi tube flows through high-speed flowing gas, negative pressure is generated at the throat of the venturi tube, disinfectant is sucked through a suction pipe at the throat of the venturi tube, the disinfectant and gas mixture are atomized through a nozzle to form disinfectant spray, the disinfectant spray is sprayed on a screen and a button of a hemodialysis machine body, the screen and the button of the hemodialysis machine body are disinfected, after disinfection is finished, the disinfection button is pressed again, the automatic valve is closed, and the gas storage of the gas storage tank is restarted. The beneficial effect that this scheme produced is:

compared with the existing hemodialysis machine, the existing hemodialysis machine can only be used in a ward due to bulkiness, when a patient needs to be transfused in the middle of transportation, the patient cannot meet the requirements of the patient, and the hemodialysis machine is placed in a vehicle and is easy to shake, so that on one hand, the normal work of the hemodialysis machine is influenced, on the other hand, the vibration of the hemodialysis machine generates noise, and the treatment of the patient is not facilitated; and hemodialysis machine among this application scheme is placed on the transport vechicle, make things convenient for patient to use at the in-process of transportation, and the gasbag plays the effect of buffering to hemodialysis machine, reduce hemodialysis machine and because of rocking the noise that produces, simultaneously, hemodialysis machine extrudees repeatedly and loosens the gasbag and make the gasbag form the inflator, gasbag exhaust gas stores in the gas holder, when needs disinfect screen and the button of hemodialysis machine body, medical personnel presses disinfection button, this hemodialysis machine can disinfect voluntarily, avoid medical personnel to be infected by bacterium and virus.

Further, the number of the air bags is set to 2 to 6 and is uniformly distributed circumferentially about the axis of the protective cylinder.

The arrangement of 2-6 air bags can enhance the effects of buffering and noise reduction on the hemodialysis machine body, and can increase the amount of gas entering the gas storage tank, so that the requirements of the venturi tube are better met.

Further, 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.

When the cooling fan in the hemodialysis machine body breaks down, the temperature detected by the temperature sensor is higher than the upper limit of the 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 the heat exchange tube in the hemodialysis machine body; the air flowing at high speed is discharged from the air storage tank and enters the venturi tube, the throat of the venturi tube generates negative pressure, the throat of the venturi tube absorbs water through the suction tube, water is scattered by the air flowing at high speed in the venturi tube to form small water drops, the air and the small water drops are fully mixed, the small water drops absorb heat in the air, the temperature of the air entering the heat exchange tube in the hemodialysis machine body is reduced, and compared with the heat dissipation by adopting the fan, the heat dissipation effect of the hemodialysis machine body can be improved; along with radiating, the inside temperature of hemodialysis machine body reduces gradually, and when temperature sensor detects the temperature and is less than the lower limit of setting value, temperature sensor makes the automatic valve close through the controller, and first automatic three-way valve switches to the communication with antiseptic solution and venturi throat simultaneously, and the second automatic three-way valve switches to venturi and shower nozzle intercommunication simultaneously, and the inside compressed gas of gas holder can be used to the automatic disinfection of hemodialysis machine body. The hemodialysis machine can be switched between two working modes of heat dissipation and disinfection.

Further, a pressure relief valve is arranged on the air storage tank.

When the gas pressure in the gas storage tank exceeds a threshold value, the pressure release valve is automatically opened to release the pressure of the gas storage tank, so that explosion of the gas storage tank due to overlarge gas pressure is avoided.

Further, 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.

The 2-4 spray heads are arranged to cover the upper part of the whole hemodialysis machine body, so that the overall sterilizing performance is improved.

Further, 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.

The water in this application scheme is mainly used to the cooling of air, consequently only need a small amount of water can, convenient transportation.

Drawings

Fig. 1 is an overall structure diagram.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the transport vehicle 10, the wheels 11, the hemodialysis machine body 20, the screen 21 of the hemodialysis machine body, the disinfection button 22, the control button 23 of the hemodialysis machine body, the protective cylinder 30, the air bag 31, the one-way air inlet valve 32, the one-way air outlet valve 33, the communicating pipe 34, the air storage tank 40, the pressure release valve 41, the automatic valve 42, the venturi tube 50, the suction pipe 51, the first automatic three-way valve 52, the second automatic three-way valve 53, the spray head 54, the water tank 60 and the disinfectant tank 61.

An example is substantially as shown in figure 1:

a hemodialysis machine comprises a hemodialysis machine body 20 and a transport vehicle 10.

As shown in fig. 1, a screen 21 of the hemodialysis machine body and a control button 23 of the hemodialysis machine body are arranged at the upper part of the hemodialysis machine body 20, the hemodialysis machine body 20 is placed at the inner bottom of a transport vehicle 10, wheels 11 are arranged at the bottom of the transport vehicle 10, a circular-ring-shaped protection cylinder 30 is fixed at the inner bottom of the transport vehicle 10, the axis of the protection cylinder 30 is arranged along the vertical direction, the protection cylinder 30 is sleeved on the periphery of the hemodialysis machine, an air bag 31 is fixed on the inner side wall of the protection cylinder 30, the air bag 31 is in an ellipsoidal shape, a one-way air inlet valve 32 is arranged at the lower end of the air bag 31, a one-way air outlet valve 33 is arranged at the upper end of the air bag 31, and the one-way air inlet valve 32 is communicated with the outside at the bottom of the transport vehicle 10 through a pipeline; the number of the airbags 31 is set to 4 and are uniformly distributed circumferentially about the axis of the protective tube 30, the outlet ends of the unidirectional outlet valves 33 of the 4 airbags 31 are connected with the same annular communicating tube 34, the annular communicating tube 34 is fixed at the mouth of the protective tube 30, and the communicating tube 34 is coaxially arranged with the protective tube 30.

The hemodialysis machine shakes and extrudes the air bag 31 in the transportation process, when the air bag 31 is extruded, the air bag 31 is deformed, the one-way air inlet valve 32 is closed, the one-way air outlet valve 33 is opened, and the air bag 31 discharges air; when the extrusion force of the hemodialysis machine body 20 to the air bag 31 disappears, the air bag 31 resets under the action of the self elasticity, in the resetting process of the air bag 31, the one-way air inlet valve 32 is opened, the one-way air outlet valve 33 is closed, and the air bag 31 sucks external air; the air bag 31 intermittently sucks and exhausts air to function as an inflator. The air bag 31 can also play a role in buffering the hemodialysis machine body 20, so that shaking of the hemodialysis machine body 20 is reduced, and noise generated by shaking of the hemodialysis machine body 20 is reduced. The 4 air bags 31 are provided in the present embodiment to enhance the buffering and noise reduction effects on the hemodialysis machine body 20, and to increase the total amount of gas discharged from the air bags 31.

As shown in fig. 1, the communicating pipe 34 is connected with the air storage tank 40 through a pipeline, the air storage tank 40 is fixed at the inner top of the transport vehicle 10, the outlet end of the air storage tank 40 is connected with the venturi tube 50 through the automatic valve 42, the venturi tube 50 comprises an inlet section, a throat section and a diffusion section, the outlet end of the air storage tank 40 is connected with the inlet section of the venturi tube 50, the throat section of the venturi tube 50 is connected with the suction pipe 51, the suction pipe 51 is a first three-way pipe, a first automatic three-way valve 52 is arranged at the junction of three branches of the first three-way pipe, the other two branches of the first three-way pipe are connected with the water tank 60 and the disinfectant tank 61, the water tank 60 and the disinfectant tank 61 are fixed in the transport vehicle 10, one end of the suction pipe 51 connected with the water tank 60 extends to the inner bottom of the water tank 60, and one end of the suction pipe 51 connected with 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 a second three-way tube, a second automatic three-way valve 53 is arranged at the junction of three branches of the second three-way tube, a heat exchange tube is arranged in the hemodialysis machine body 20, the outlet end of the heat exchange tube is arranged at the bottom of the hemodialysis machine, the other two branches of the second three-way tube are respectively connected with the heat exchange tube in the hemodialysis machine body 20 and a spray head 54, and the spray head 54 is positioned right above the hemodialysis machine body 20; the inside of the hemodialysis machine body is provided with a temperature sensor, 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 a controller, when the temperature detected by the temperature sensor exceeds 70 ℃, the temperature sensor enables the automatic valve 42 to be opened through the controller, the first automatic three-way valve 52 is switched to communicate a water source with the throat part of the venturi tube 50, and the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with a heat exchange tube inside the hemodialysis machine; when the temperature detected by the temperature sensor is lower than 60 ℃, the temperature sensor closes the automatic valve 42 by the controller, while the first automatic three-way valve 52 is switched to communicate the sterilizing liquid with the throat of the venturi tube 50, while the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the shower head 54. The upper portion of the hemodialysis machine body 20 is provided with a sterilization button 22, and an automatic valve 42 is electrically connected with the sterilization button 22, and when the sterilization button 22 is pressed, the automatic valve 42 is opened, and then the sterilization button 22 is pressed, the automatic valve 42 is closed.

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

Normally, the automatic valve 42 is closed, the first automatic three-way valve 52 is switched to put the sterilizing fluid in communication with the throat of the venturi tube 50, while the second automatic three-way valve 53 is switched to put the venturi tube 50 in communication with the spray head 54. When the hemodialysis machine body 20 needs to be sterilized, the sterilizing button 22 is pressed, the automatic valve 42 is opened, compressed gas discharged from the gas storage tank 40 enters the venturi tube 50, high-speed flowing gas flows through the venturi tube 50, negative pressure is generated at the throat part of the venturi tube 50, sterilizing liquid is sucked through the suction tube 51 at the throat part of the venturi tube 50, a sterilizing liquid spray is formed by atomizing the sterilizing liquid and gas mixture through the spray head 54, the sterilizing liquid spray is sprayed on the screen 21 and the button of the hemodialysis machine body, the screen 21 and the button of the hemodialysis machine body are sterilized, after sterilization is finished, the sterilizing button 22 is pressed again, the automatic valve 42 is closed, and the gas storage tank 40 restarts gas storage.

When the cooling fan in the hemodialysis machine body 20 fails and the temperature detected by the temperature sensor is higher than 70 ℃, the temperature sensor opens the automatic valve 42 through the controller, the first automatic three-way valve 52 is switched to communicate the water source with the throat of the venturi tube 50, and the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the heat exchange tube in the hemodialysis machine body 20; the high-speed flowing gas discharged from the gas storage tank 40 enters the venturi tube 50, the throat of the venturi tube 50 generates negative pressure, the throat of the venturi tube 50 absorbs water through the suction tube 51, the water is scattered by the high-speed flowing gas in the venturi tube 50 to form small water drops, the air and the small water drops are fully mixed, the small water drops absorb the heat in the air, the temperature of the air entering the heat exchange tube inside the hemodialysis machine body is reduced, and compared with the heat dissipation effect of the hemodialysis machine body 20 by adopting a fan, the heat dissipation effect of the hemodialysis machine body is improved; as the heat dissipation proceeds, the temperature inside the hemodialysis machine body gradually decreases, and when the temperature detected by the temperature sensor is lower than 60 ℃, the temperature sensor closes the automatic valve 42 through the controller, while the first automatic three-way valve 52 is switched to communicate the sterilizing liquid with the throat of the venturi tube 50, while the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the spray head 54, and the compressed gas inside the gas tank 40 can be used for automatic sterilization of the hemodialysis machine body 20.

Because the water in the water tank 60 in this application scheme is mainly used for cooling the air, therefore only a small amount of water is needed, and transportation is convenient.

If the temperature inside the hemodialysis machine is still higher than 60 ℃ after the gas inside the gas storage tank 40 is exhausted, the automatic valve 42 is kept in an opened state continuously, and the gas exhausted by the air bag 31 is directly exhausted into the heat exchange tube of the hemodialysis machine body 20 after passing through the gas storage tank 40 and the venturi tube 50, so that the continuous heat dissipation of the hemodialysis machine body 20 is realized, the hemodialysis machine body 20 can be used continuously in a short time, and the fan needs to be stopped and maintained as soon as possible.

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

In this embodiment, the number of the spray heads 54 is set to 3 and the spray heads 54 are uniformly arranged right above the hemodialysis machine body 20 at intervals, and the 3 spray heads 54 are arranged to cover the upper part of the whole hemodialysis machine body 20, so that the overall sterilizing performance is improved.

As shown in fig. 1, the air tank 40 is provided with a relief valve 41. When the gas pressure in the gas storage tank 40 exceeds 1MPa, the pressure release valve 41 is automatically opened to release the pressure of the gas storage tank 40, so that explosion of the gas storage tank 40 due to the excessive gas pressure is avoided.

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 sterilizing liquid with the throat of the venturi tube 50, and the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the shower head 54.

The hemodialysis machine is shaken during transportation and is pressed to the air bag 31, the air bag 31 intermittently sucks and discharges air to function as an inflator, and the air discharged from the air bag 31 is stored in the air storage tank 40 to generate compressed air.

When the hemodialysis machine body 20 needs to be disinfected, the disinfection button 22 is pressed down, the automatic valve 42 is opened, compressed gas discharged from the gas storage tank 40 enters the venturi tube 50, negative pressure is generated at the throat part of the venturi tube 50, the disinfectant is sucked through the suction tube 51 at the throat part of the venturi tube 50, the disinfectant and the gas mixture are atomized through the spray head 54 to form disinfectant spray, the disinfectant spray is sprayed on the screen 21 and the button of the hemodialysis machine body, the screen 21 and the button of the hemodialysis machine body 20 are disinfected, after the disinfection is finished, the disinfection button 22 is pressed down again, the automatic valve 42 is closed, and the gas storage tank 40 restarts storing gas.

When the cooling fan in the hemodialysis machine body 20 fails and the temperature detected by the temperature sensor is higher than 70 ℃, the temperature sensor opens the automatic valve 42 through the controller, and simultaneously the first automatic three-way valve 52 is switched to communicate the water tank 60 with the throat of the venturi tube 50, and simultaneously the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the heat exchange tube in the hemodialysis machine body 20; the gas discharged from the gas storage tank 40 and flowing at a high speed enters the venturi tube 50, the throat of the venturi tube 50 generates negative pressure, the throat of the venturi tube 50 absorbs water through the suction tube 51, the water absorbs heat in the air, and the temperature of the air entering the heat exchange tube inside the hemodialysis machine is reduced; as the heat dissipation proceeds, the temperature inside the hemodialysis machine gradually decreases, and when the temperature detected by the temperature sensor is lower than 60 ℃, the temperature sensor closes the automatic valve 42 through the controller while the first automatic three-way valve 52 is switched to communicate the sterilizing liquid with the throat of the venturi tube 50 while the second automatic three-way valve 53 is switched to communicate the venturi tube 50 with the shower head 54.

The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

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.