CN111111371A - Exhaust and disinfection device for treating contaminated waste gas of medical central suction system - Google Patents

Abstract

The invention belongs to the technical field of medical equipment, and particularly relates to an exhaust disinfection device for treating contaminated waste gas of a medical central suction system. The device of the invention comprises: the device comprises a power supply module, a thermal killing module, a control system, an incoming flow pressure detection sensor, a temperature sensor, an exhaust valve, a movable chassis, a box body, an interface, a flexible connecting pipeline and the like; the thermal killing module provides electric-heat conversion for the device and mainly meets the requirement of instant killing temperature; specifically, a resistive electric heating element is adopted, or other electric heating elements such as microwave and inductive are adopted; preferably, a wind tunnel structure is adopted, and a heat source is formed by directly heating, so that the heat efficiency is higher; the control system is used for controlling the device to start and stop, load regulation, temperature monitoring, temperature regulation and fault alarm. The device can be provided with a plurality of waste gas discharge main pipes which are connected in parallel to the medical central suction system, and can realize the real-time and efficient killing of microorganisms such as viruses, bacteria and the like.

Description

Exhaust and disinfection device for treating contaminated waste gas of medical central suction system

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to an exhaust disinfection device for treating contaminated waste gas of a medical central suction system.

Background

The medical central suction system takes a vacuum pump unit of a central suction station as a negative pressure source, and the front-end piping system and the vacuum accessories of the medical central suction system reach the required negative pressure value through the suction effect of the vacuum pump, so that the vacuum suction is generated at the terminals of an operating room, a rescue room, a treatment room and each ward of a ward area.

Through investigation, the central attraction system of the existing hospital, especially the infectious disease treatment hospital, has the following problems of toxic waste gas emission: (1) the central suction station house is arranged in the basement, the exhaust port is also arranged in the basement or the suction station house, and the polluted waste gas directly pollutes the environment of the station house; (2) medical compressed air stations of part of hospitals are close to the central suction station room, and medical compressed air inlets are arranged indoors, so that toxic waste gas can be possibly sucked into medical compressed air; (3) when the exhaust port is arranged outdoors, the distance between the exhaust port and the door and window of an adjacent building is less than 3 meters, and the polluted waste gas is easily drifted to an adjacent working area or living area under the influence of monsoon; (4) most vacuum suction pump stations do not all install the effective degassing unit to the contaminated waste gas additional, even there is some installation bacteria filter equipment, the filter core is not changed for a long time, and loss of pressure is big, directly influences the vacuum pump operation, and simultaneously, the filter core is changed and also is brought great maintenance cost for the hospital. Therefore, there is a need for a safe, reliable and effective exhaust disinfection device for hospital central suction system to reduce the secondary pollution caused by the toxic waste gas emission of hospital central suction system.

The thermal sterilization technology is a simple, safe and effective sterilization technology, different from other chemical methods such as a chlorination method and the like, an ozone method, an ultraviolet method, a plasma sterilization technology and the like, researchers think that high temperature can denature or solidify microorganisms such as viruses, bacteria and the like until the microorganisms lose activity and die, and the thermal sterilization is that high temperature is adopted to cause the single-helix breaking of the DNA of the microorganisms such as the viruses, the bacteria and the like to die. Since the chemical structures of proteins, nucleic acids, etc. of these microorganisms are linked by hydrogen bonds, which are weak chemical bonds, when the microorganisms such as viruses and bacteria are heated, the hydrogen bonds are destroyed, and the structures of proteins, nucleic acids, enzymes, etc. are destroyed, thereby losing their biological activity and killing them. In addition, high temperature can also cause damage to cell membrane function and leakage of small molecular substances and degraded ribosomes, which are generally toxic effects of protein denaturation, impaired oxidation and increased electrolyte levels, although the lethal effects of dry heat are different from those of moist heat. Therefore, the sterilization by adopting the thermal sterilization technology is simple, safe and efficient, is particularly suitable for medical places needing long-term and stable sterilization, such as treatment of contaminated waste gas discharged by a medical vacuum suction system, and the like, and solves the problems of environmental compatibility and high cost existing in the high-humidity and contaminated waste gas discharged by a vacuum pump of a central suction system of a hospital due to the adoption of other sterilization technologies.

At present, in the configuration practice of medical central suction systems in hospitals, a treatment method of installing a filter device in front of and behind a vacuum pump is provided, and the filter element is expected to be adopted to filter out microorganisms such as viruses and bacteria, and the higher the filtering efficiency is, the larger the pressure loss is. Moreover, as time goes by, more and more impurities are accumulated, and the pressure difference is also increased, which will seriously affect the operation of the vacuum pump assembly and the maintenance of the vacuum degree. If the filter element is replaced, potential safety hazards of virus, bacteria and the like exist, and higher maintenance cost is brought to hospitals due to the replacement of the filter element.

The vacuum pump unit of the medical central suction system adopts a water ring pump, a large amount of moisture is carried in the discharged waste gas, and the waste gas is difficult to discharge high moisture content and even a large amount of condensed water caused by the change of dew point temperature in the pipeline conveying process although the waste gas is condensed; in addition, chemical methods such as chlorination, ozone, high-voltage electrostatic, ultraviolet, plasma, and other killing techniques require the addition of harmful chemicals, and may also generate ozone or other regeneration by-products and hazardous waste; in particular, it is difficult to achieve high primary killing efficiency by using the killing technologies such as ozone, high voltage static electricity, ultraviolet, plasma, etc., while the waste gas discharged from the vacuum pump unit of the medical central suction system is organized waste gas discharge, a device with high primary killing efficiency and capable of being inactivated immediately is needed, and killing, i.e. safe discharge, otherwise, the total killing efficiency of the device on the discharged contaminated waste gas is ensured by cyclic killing, but obviously, the great challenge is brought to the field engineering practice, and the cost is greatly increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an exhaust gas disinfection device for discharging and treating high-humidity toxic waste gas (possibly carrying microorganisms such as viruses and bacteria and possibly containing a large amount of moisture) discharged by a medical center suction system.

By adopting the solution scheme based on the device, the contaminated waste gas discharged by the vacuum pump unit of the medical central suction system can be cleanly discharged, the system pressure difference is small, the performance of the original vacuum system is not influenced, only electric power is consumed in the process, harmful chemical substances are not required to be added, ozone or other regeneration byproducts and dangerous waste are not generated, the method is safe, reliable, immediately kills and high in killing efficiency, can flexibly select types, install, operate, use and maintain according to the configuration requirements of the hospital central suction system, can furthest reduce secondary harm caused by diffusion and diffusion of viruses, and has positive effects on well preventing, controlling and resisting epidemic situations. Meanwhile, the device is also suitable for the immediate killing and treatment of the exhaust emission of the similar highly polluted exhaust gas in various infectious disease hospitals.

The invention provides an exhaust gas disinfection device based on a thermal killing technology, which comprises a control system, a power supply module, an alarm system, a killing channel, a thermal killing module, a solid-state relay, a box body, an interface, a flexible connecting pipeline and the like; the thermal killing module is arranged in the killing channel; the thermal killing module is internally provided with a wind tunnel structure and a central temperature sensor, and the outer side of the thermal killing module is provided with a heat energy recovery and heat preservation part; the control system, the power supply module, the alarm system, the killing channel, the thermal killing module and the solid-state relay are arranged in the box body; the air inlet end of the exhaust disinfection device, namely the air inlet of the killing channel, is connected with an air inlet pipeline through an air inlet valve and is provided with an incoming flow pressure sensor; the exhaust end of the exhaust disinfection device, namely the air outlet of the killing channel, is connected with an air outlet pipeline through an exhaust valve, and is provided with an exhaust temperature sensor. Wherein:

the power supply module is used for providing commercial power conversion for the device so as to provide a qualified power supply;

the thermal killing module provides electric heat conversion for the device and is used as the core of the exhaust disinfection device, and the module mainly meets the requirement of instant killing temperature; particularly, a resistive electric heating element is adopted, and other electric heating elements such as microwave and inductive elements can also be adopted;

the thermal killing module preferably adopts a wind tunnel structure, and directly heats to form a heat source, so that the thermal killing module has higher thermal efficiency;

the thermal killing module preferably adopts heat exchange and heat preservation measures, namely heat energy recovery and heat preservation parts are arranged on the outer side so as to improve the heat utilization rate as much as possible and avoid heat energy loss;

the control system is used for controlling the device to start, stop, adjust load, monitor temperature, adjust temperature, give a fault alarm and the like. Specifically, the control system is connected with related detection elements, specifically, a sensor for monitoring exhaust temperature, a sensor for monitoring central temperature, a sensor for monitoring incoming flow exhaust temperature and pressure and the like, and is used for measuring process temperature, converting temperature data into electric signals and transmitting the electric signals to the control system so as to accurately control the thermal killing module to be always maintained at a rated working temperature and adjust and control the output power of the heating element by combining with a solid-state relay; the temperature regulation adopts PID; the control system is connected with a fault alarm system, and the fault alarm comprises instant alarm when the temperature does not reach a set value, overtemperature alarm after dry burning and the like;

the exhaust valve is used for adjusting the air outlet temperature and meeting various requirements on instant killing temperature within the range of the power capacity of the device;

the box body is used for installing components and elements, is convenient to operate, use, maintain and maintain, and is provided with an air inlet interface and an air outlet interface at two sides respectively, and heat dissipation holes are formed below the air inlet interface and the air outlet interface respectively; the front side of the box body is used for installing a control system, and the top of the box body is fixed with two handles, so that the box body is convenient to carry.

The invention also comprises a movable base, wherein 4 wheels are arranged below the base, so that the movable base is convenient to move; the bottom of the box body is fixed on the movable base.

The connection relationship between the exhaust disinfection device and the medical central suction system is as follows: the exhaust gas discharging main pipe of the medical center suction system is connected with the exhaust gas sterilizing device, and particularly, the air inlet end interface of the exhaust gas sterilizing device is connected with the exhaust gas discharging main pipe through an air inlet hose: the two ends of the air inlet hose are respectively in sealing butt joint with the exhaust gas discharge main pipe and the air inlet interface through detachable fixing pieces; the exhaust end interface of the exhaust disinfection device is respectively connected with an exhaust pipeline through an exhaust hose, and the two ends of the exhaust hose are respectively in sealing butt joint with the exhaust interface and the exhaust pipeline through detachable fixing pieces; the air inlet interface and the air outlet interface are both provided with flow regulating valves; an air inlet pressure sensor is connected between the exhaust gas discharge main pipe and the air inlet interface and used for monitoring the state of the incoming exhaust gas.

Further, the exhaust gas disinfection device can be a plurality of exhaust gas disinfection devices, and at the moment, the exhaust gas disinfection devices are connected into an exhaust gas discharge main pipe of the medical center suction system in parallel.

Furthermore, the medical central suction system also comprises a vacuum pump set positioned at the inlet end of the exhaust gas discharge main pipe, and the vacuum pump set is used for pumping the contaminated exhaust gas into the exhaust and disinfection device; the number of the vacuum pumps of the vacuum pump group is at least 2.

Exhaust degassing unit attracts system vacuum pump exhaust waste gas to administer at medical center, mainly includes:

(1) each exhaust disinfection device is provided with an air inlet cut-off valve, so that the maintenance is convenient, and when the equipment fails, the shutdown maintenance can be implemented under the condition that the operation of the vacuum pump unit is not influenced;

(2) an incoming flow pressure detection sensor is arranged in front of an air inlet of each exhaust disinfection device, so that the load of equipment is adjusted on the premise of conveniently maintaining the killing temperature condition, the start and stop of the equipment are determined, and the operation energy consumption is reduced;

(3) the air inlet and the air outlet interfaces of each exhaust disinfection device are respectively and independently connected into an air inlet pipeline and an exhaust pipeline in parallel through an air inlet hose and an exhaust hose, and the two ends of the air inlet hose and the two ends of the exhaust hose are respectively in sealing butt joint with the air inlet pipeline, the air inlet interface, the exhaust interface and the exhaust pipeline through detachable fixing pieces; the detachable fixing piece is an anchor ear, and the hose is connected by the anchor ear, so that the installation is convenient, and the vibration source can be effectively isolated; wherein, the exhaust outlet adopts a flexible connecting pipe which can at least endure the high temperature above the exhaust temperature of the device and can operate for a long time;

(4) aiming at the exhaust waste gas treatment of a plurality of sets of vacuum pump units in operation in a hospital, preferably but not necessarily, a plurality of exhaust sterilizing devices are connected in parallel to meet the treatment requirement of the total amount of waste gas exhausted by a vacuum pump of a medical central suction system, but at least more than 2 (including 2) exhaust sterilizing devices are needed, and each exhaust sterilizing device is independently connected in parallel to an exhaust gas exhaust main pipe of the vacuum pump unit respectively so as to ensure that the operation of the vacuum pump unit is not influenced and the waste gas can be effectively treated when one of the exhaust sterilizing devices is stopped during maintenance.

Compared with the prior art, the technical scheme of the invention has scientific design and advanced process, can continuously run all year round, can kill microorganisms such as viruses and bacteria in time, has high killing efficiency, can reduce secondary harm caused by diffusion and diffusion of the viruses to the maximum extent, and has positive effect on prevention and control of epidemic situation. Simultaneously, adopt this device also to be applicable to the demand of killing immediately of the similar highly polluted exhaust emission of various infectious diseases hospitals, its beneficial effect mainly has:

(1) the exhaust gas disinfection device can meet the requirements of achieving, controlling, adjusting and alarming the target temperature for instantly killing microorganisms such as viruses, bacteria and the like, and can instantly kill, taking a typical representative of Bacillus subtilis var. niger ATCC 9372 as an example, the instant killing temperature is less than 190 ℃, the working temperature of the exhaust gas disinfection device is set to 190 ℃, the instant killing rate (killing efficiency) can reach more than 99.99 percent, clean discharge is realized, and engineering construction challenges caused by repeated killing and cyclic killing due to low one-time killing efficiency of other technical factors are avoided;

(2) the exhaust gas disinfection device only needs to consume electric power, has no material consumption, no consumables, does not need to add harmful chemical substances, does not generate ozone or other regeneration byproducts and dangerous waste, has high killing efficiency and low treatment cost, and is safe and environment-friendly;

(3) the exhaust disinfection device is rapid in temperature rise, accurate in temperature control, adjustable in load, capable of detecting incoming air and capable of reducing operation power consumption to the maximum extent; the overheating dry burning can be protected in time, the fault, the set temperature and the like are alarmed, and the safety strategy guiding function is complete;

(4) the exhaust disinfection device is modularized and standardized, and can be flexibly selected according to the configuration requirements of a hospital central suction system, wherein the sum of rated treatment air volume of the exhaust disinfection device is greater than the total exhaust volume of a vacuum pump unit of the hospital central suction system, so that the installation, operation, use and maintenance are convenient;

(5) the pressure loss of the exhaust disinfection device is small, only about 1kpa, accumulated pressure loss can not be formed like a filter in long-term operation, the sum of rated treatment air volume of the exhaust disinfection device is larger than the model selection principle of the total exhaust volume of a vacuum pump unit of a hospital central suction system, accumulated pressure loss can not occur, the performance of the original vacuum system is not influenced, and the exhaust disinfection device can stably operate for a long time; when this scheme of adoption, can save the filter equipment that probably installs among the current attraction system, can further reduce the pressure loss in the system, both improve the efficiency of vacuum attraction system and also satisfy the disinfection demand, owing to saved filter equipment simultaneously for whole attraction system is non-maintaining basically, and no consumptive material consumes.

The system described herein refers to an equipment system, or a production equipment.

The vacuum pump set described herein comprises at least two vacuum pumps in parallel. But not limited to, the recited values and other values not recited within the range of values are equally applicable.

In addition, the medical central suction system provided by the invention further comprises an electric control cabinet, a vacuum tank, a vacuum instrument, a pipeline system connected with each ward of the ward area, and even other necessary equipment in the original medical central suction system, wherein the specific structures and layout modes of the equipment are all known by the technical personnel in the field, but are limited by space, the specific requirements and the specific limitations are not required for the equipment, the detailed description of the specific structures of the necessary equipment is omitted, and the technical personnel in the field can understand the complete structural layout of the medical central suction system provided by the invention based on the prior art.

Drawings

FIG. 1 is a schematic view of the construction of the exhaust gas disinfection apparatus of the present invention.

Fig. 2 is a diagram showing the connection relationship between the exhaust gas sterilizing device and the medical center suction system.

Reference numbers in the figures: the device comprises a vacuum pump 1, an exhaust gas disinfection device 2, a waste gas exhaust main pipe 3, an air inlet interface 4, a stop valve/flow control valve 5, an air inlet flexible connecting pipe 6, a detachable fixing part 7 (hoop), an exhaust interface 8, an exhaust flexible connecting pipe 9, an exhaust gas exhaust pipeline 10, a disinfected gas exhaust pipeline 11, an incoming flow (air inlet) pressure sensor 11, a control system 12, a power module 13, a thermal power killing module 14, an incoming flow (air inlet) temperature sensor 15, a central temperature sensor 16, an exhaust temperature sensor 17, a box body 18, a movable chassis 19, an exhaust valve 20, a solid-state relay 21, a killing channel 22, a heat energy recovery and heat preservation component 23, a wind tunnel structure 24, an alarm system 25 and a handle 26.

Detailed Description

In the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be further described by means of specific embodiments in conjunction with the accompanying drawings.

In one embodiment, the present invention provides an exhaust gas disinfection apparatus 2 based on thermal killing technology, said exhaust gas disinfection apparatus 2 comprising: a box 18, in which a power module 13 (including but not limited to a switch, a contactor, and other components), a thermal killing module 14, a control system 12, and the like are disposed; wherein, the thermal killing module 14 comprises an internal electric heating element and an external heat exchange and insulation material 23; the control system 12 at least comprises a sensor 16 for detecting the central heating temperature, a sensor 17 for detecting the exhaust gas temperature, a sensor for detecting the incoming flow temperature and pressure, and other control components such as a solid-state relay 21 and the like, and adopts PID control; and an air inlet interface 4 and an air outlet interface 8 are respectively arranged on two sides of the box body. Exhaust gas disinfection device 2 further comprises a movable base 19, preferably fixed to the bottom of the tank.

Specifically, the exhaust gas disinfection device achieves preset killing temperature by means of a built-in power supply module, a thermal power killing module, a sensor and a control system, can kill microbes such as viruses and bacteria immediately, takes Bacillus subtilis var. niger ATCC 9372 as an example of a typical representative, the immediate killing temperature is less than 190 ℃, the working temperature of the exhaust gas disinfection device is set to 190 ℃, the immediate killing rate (killing efficiency) can reach more than 99.99 percent, and clean emission can be achieved by one-time killing. The control system meets the control requirements of starting and stopping the device, monitoring the temperature, adjusting the load, alarming the temperature and faults and the like by monitoring the pressure of the incoming flow exhaust gas, the exhaust temperature and the central temperature. The temperature sensor is used for measuring the process temperature, converting the temperature data into an electric signal and transmitting the electric signal to the control element so as to accurately control the thermal killing module to be always maintained at the rated working temperature, the output power of the heating element is adjusted and controlled by combining the solid-state relay, the PID is adopted for process temperature adjustment, in addition, the thermal killing module has instant alarm when the temperature does not reach the set value, and overtemperature protection is realized after dry burning occurs.

One typical application of the present invention, such as exhaust gas disinfection device 2, has the following main technical performance indicators: the immediate killing treatment air volume is 300-400 m³The novel Bacillus subtilis var. niger killing device can meet the killing requirement of a typical representative 'Bacillus subtilis var. niger) ATCC 9372' on instantly killing all microorganisms such as viruses, bacteria and the like at the temperature lower than the instant killing temperature, and the killing efficiency is more than or equal to 99.99 percent (can be adjusted by an air inlet valve and an air outlet valve), and the thermal killing temperature is less than or equal to 190 ℃ (can be adjusted by the air inlet valve and the air outlet valve and is set in a controller).

In the specific embodiment of the treatment applied to the exhaust emission of the vacuum pump set of the medical central suction system in a hospital, as shown in fig. 2, the invention provides an exhaust disinfection device based on the principle of the thermal killing technology and a solution thereof applied to the treatment of the exhaust emission discharged by the vacuum pump of the medical central suction system, wherein the exhaust disinfection device 2 is respectively and independently connected in parallel with an exhaust emission main pipe 3.

Specifically, the air inlet port 4 of the exhaust gas sterilizing device 2 is respectively and independently connected in parallel to the exhaust gas discharge manifold 3 through an air inlet hose 6, and two ends of the air inlet hose 6 are respectively and hermetically butted with the exhaust gas discharge manifold 3 and the air inlet port 4 through detachable fixing pieces 7. An exhaust interface 8 of the exhaust gas disinfection device 2 is respectively connected with mutually independent exhaust pipelines 10 through an exhaust hose 9, and two ends of the exhaust hose 9 are respectively in sealing butt joint with the exhaust interface 8 and the exhaust pipelines 10 through detachable fixing pieces 7. An alternative detachable fixing element 7 is a clip. And flow regulating valves 5 are arranged at the air inlet interface 4 and the air outlet interface 8. An air inlet pressure sensor 11 is connected between the exhaust gas discharge main pipe 3 and the air inlet interface 4 and used for monitoring the state of the incoming exhaust gas;

the medical center suction system also comprises a vacuum pump set positioned at the inlet end of the exhaust gas discharge main pipe 3, the vacuum pump set is used for pumping contaminated exhaust gas into the exhaust gas disinfection device 2, and specifically, the vacuum pump set comprises at least two vacuum pumps 1 which are connected in parallel.

Fig. 2 shows a schematic installation diagram of an alternative medical central suction system, and as shown in fig. 2, the medical central suction system includes four sets of exhaust gas sterilizing devices 2, and each exhaust gas sterilizing device 2 is independently connected in parallel to an exhaust gas discharge manifold 3. The air inlet interface 4 of each exhaust disinfection device 2 is respectively and independently connected into the exhaust emission main pipe 3 in parallel through an air inlet hose 6, and the two ends of the air inlet hose 6 are respectively and hermetically butted with the exhaust emission main pipe 3 and the air inlet interface 4 through detachable fixing pieces 7. The exhaust interface 8 of each exhaust disinfection device 2 is respectively connected with the independent exhaust pipelines 10 through the exhaust hose 9, and the two ends of the exhaust hose 9 are respectively in sealing butt joint with the exhaust interface 8 and the exhaust pipelines 10 through the detachable fixing pieces 7. And flow regulating valves 5 are arranged at the air inlet interface 4 and the air outlet interface 8. The medical center suction system also comprises a vacuum pump set positioned at the inlet end of the exhaust gas discharge main pipe 3, the vacuum pump set is used for pumping contaminated exhaust gas into the exhaust gas disinfection device 2, and in the attached figure 1, the vacuum pump set comprises four groups of vacuum pumps 1 which are connected in parallel.

It should be noted that the number relationship between the four sets of vacuum pumps 1 and the four sets of exhaust gas sterilizing devices 2 shown in fig. 1 does not mean that the two vacuum pumps and the exhaust gas sterilizing devices are matched in the same number in the actual assembly process, and it should be understood that the drawings are only exemplary, and the overall structural features of the system, such as the specific structure, number relationship, pipeline layout and valve arrangement, of the devices should be selected according to the actual amount of the treated gas and according to the actual assembly requirements. In fact, the medical center suction system provided by the invention also comprises a necessary but conventional electric control cabinet, a vacuum tank, a vacuum instrument and the likeThe invention is characterized in that the exhaust disinfection device is added and then can be instantly killed once to meet the emission requirement, a matched bacteria filtering device in the existing medical central suction system is omitted, the system pressure difference is reduced, the cost problem caused by frequent filter element replacement is reduced, an incoming flow pressure sensor is arranged, and the central temperature and exhaust temperature sensor arranged by a thermal killing module are combined, the device is complete in guiding functions of fault alarm safety strategies such as instant alarm when the device is started and stopped, temperature monitoring, load adjustment and temperature adjustment and does not reach a set value and over-temperature protection after dry burning is generated, and the output power of a heating element can be adjusted and controlled by combining a solid relay, in addition, the number of the exhaust sterilizing devices 2 equipped in the medical central suction system provided by the invention can be determined according to the maximum value of the actual total exhaust volume of the vacuum pump set, and the recommended number matching principle is that every 400m³The exhaust gas volume/h is matched with one exhaust gas disinfection device 2, and the equipment matching redundancy of the medical central suction system is not less than 10 percent.

The above description is only for the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure of the present invention.

Claims (5)

1. An exhaust and disinfection device for treating contaminated waste gas of a medical central suction system is characterized by comprising a control system, a power supply module, an alarm system, a killing channel, a thermal killing module, a solid-state relay, a box body, a connector and a flexible connecting pipeline; the thermal killing module is arranged in the killing channel; the thermal killing module is internally provided with a wind tunnel structure and a central temperature sensor, and the outer side of the thermal killing module is provided with a heat energy recovery and heat preservation part; the control system, the power supply module, the alarm system, the killing channel, the thermal killing module and the solid-state relay are arranged in the box body; the air inlet end of the exhaust disinfection device, namely the air inlet of the killing channel, is connected with an air inlet pipeline through an air inlet valve and is provided with an incoming flow pressure sensor; the exhaust end of the exhaust disinfection device, namely the air outlet of the killing channel, is connected with an air outlet pipeline through an exhaust valve, and is provided with an exhaust temperature sensor; wherein:

the power supply module is used for providing commercial power conversion for the device so as to provide a qualified power supply;

the thermal killing module provides electric heat conversion for the device and is used as the core of the exhaust disinfection device, and the module mainly meets the requirement of instant killing temperature; specifically, a resistive electric heating element is adopted, or a microwave and inductive electric heating element is adopted;

the control system is used for controlling the device to start, stop, adjust load, monitor temperature, adjust temperature and give a fault alarm; specifically, the control system connects the relevant detection elements: the system comprises a sensor for monitoring the exhaust temperature, a sensor for monitoring the central temperature and a sensor for monitoring the temperature and the pressure of the incoming exhaust gas, wherein the sensors are used for measuring the process temperature, converting temperature data into electric signals and transmitting the electric signals to a control system so as to accurately control the thermal killing module to be always maintained at a rated working temperature, and are combined with a solid-state relay to adjust and control the output power of a heating element; the temperature regulation adopts PID; the control system is connected with a fault alarm system, and the fault alarm comprises an instant alarm when the temperature does not reach a set value and an overtemperature alarm after dry burning;

the exhaust valve is used for adjusting the air outlet temperature and meeting various requirements on instant killing temperature within the range of the power capacity of the device.

2. The exhaust gas sterilizing apparatus for treating contaminated exhaust gas from a medical center aspiration system as set forth in claim 1, further comprising a movable base to which the bottom of the case is fixed.

3. The exhaust gas disinfection device for the treatment of contaminated exhaust gas from a medical central suction system according to claim 1, wherein the connection relationship with the medical central suction system is as follows:

the exhaust disinfection device is connected to an exhaust gas discharge main pipe of a medical center suction system: specifically, an air inlet end interface of the exhaust disinfection device is connected in parallel with the exhaust gas discharge main pipe through an air inlet hose, and two ends of the air inlet hose are in sealing butt joint with the exhaust gas discharge main pipe and the air inlet interface respectively through detachable fixing pieces; the exhaust end interface of the exhaust disinfection device is connected with the exhaust pipeline through an exhaust hose, and the two ends of the exhaust hose are respectively in sealing butt joint with the exhaust interface and the exhaust pipeline through detachable fixing pieces; the air inlet interface and the air outlet interface are both provided with flow regulating valves; an air inlet pressure sensor is connected between the exhaust gas discharge main pipe and the air inlet interface and used for monitoring the state of the incoming flow exhaust gas.

4. The exhaust gas disinfection device for the treatment of contaminated exhaust gas from a medical central suction system as claimed in claim 3, wherein said exhaust gas disinfection device is a plurality of exhaust gas disinfection devices connected in parallel to the exhaust gas discharge header pipe of the medical central suction system.

5. The exhaust gas disinfection apparatus for use in the treatment of contaminated exhaust gas from a medical central aspiration system of claim 4, wherein the medical central aspiration system further comprises a vacuum pump unit at the inlet end of the exhaust gas discharge manifold, the vacuum pump unit being adapted to draw contaminated exhaust gas into the exhaust gas disinfection apparatus; the number of the vacuum pumps of the vacuum pump group is at least 2.

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