CN212143890U - Medical waste microwave sterilization equipment - Google Patents

Abstract

The utility model relates to the technical field of medical waste disposal, and discloses a medical waste microwave sterilization device; comprises a feeding crushing system, a material conveying sterilization system and a gas treatment system which are arranged in sequence; the feeding crushing system comprises a crusher for crushing medical waste and a sprayer for spraying water to moisten medical waste fragments, and the sprayer is arranged at the outlet end of the crusher; the material conveying and sterilizing system is used for performing microwave sterilization on the medical waste fragments; the equipment further comprises a tail gas waste heat enthalpy increasing system, the tail gas waste heat enthalpy increasing system comprises a heat exchange device, a tail gas outlet of the material conveying and sterilizing system is connected with a gas inlet of the gas treatment system through a heat release pipe of the heat exchange device, and a heat absorption pipe of the heat exchange device is connected with the sprayer. The utility model provides a medical waste microwave sterilization equipment can high-efficient breakage, effectively disinfect, and reduce cost, the hidden danger of solving high temperature treatment existence carry out tail gas waste heat utilization through tail gas waste heat enthalpy-increasing system and reduce the energy consumption.

Description

Medical waste microwave sterilization equipment

Technical Field

The utility model relates to a medical waste handles technical field, especially relates to a medical waste microwave sterilization equipment.

Background

Medical waste contains a large amount of bacteria, viruses and chemical agents, has extremely strong infectivity, biotoxicity and corrosivity, is an important risk factor causing disease transmission or related public health problems, and is the first hazardous waste in the hazardous wastes listed in the national hazardous waste records (2016 edition) 47. The medical waste has the characteristics of high infectivity, high danger and the like such as space pollution, acute infection, latent infection and the like, the harm of virus bacteria is dozens of times or even hundreds of times of that of urban domestic garbage, the medical waste is special waste which has wide influence and great harm, and the medical waste is easy to cause cross infection and air pollution, water pollution and soil pollution due to improper disposal, thereby seriously threatening the health and ecological environment of human beings. Therefore, medical waste is strictly regulated by many laws in any country and must be disposed of by means of disinfection and destruction. Medical waste standardization and harmless treatment become the key and support for treating current medical waste.

At present, a plurality of methods for treating medical waste are available, such as non-incineration methods of high-temperature steam treatment, chemical treatment, microwave treatment and the like, and incineration, high-molecular decomposition, drying sterilization and the like are available. Wherein, the high-temperature steam treatment method can not reduce the volume and the weight of the waste, and the weight is increased due to the condensation of the steam, so the cost is higher; in the incineration method, secondary pollution is easily caused when partial wastes are incinerated (such as dioxin and other highly toxic carcinogenic substances generated by plastic incineration), and a tail gas treatment facility is required for further treatment, so that the cost is increased; the high-temperature pyrolysis method can generate certain tar in the high-temperature pyrolysis process, so that the pipeline of the pyrolysis furnace is easy to block, and the problem of cleaning the pipeline is increased; the magnetic cracking method has high difficulty of treatment facilities, complex equipment and higher cost.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a medical waste microwave sterilization equipment for there is easy damage equipment such as tar that causes secondary pollution, treatment cost height, processing procedure to produce easily, the equipment maintenance degree of difficulty, with high costs scheduling problem in solving current medical waste processing method.

The embodiment of the utility model provides a medical waste microwave sterilization device, which comprises a feeding crushing system, a material conveying sterilization system and a gas treatment system which are arranged in sequence; the feeding crushing system comprises a crusher for crushing medical waste and a sprayer for spraying water to wet medical waste fragments, wherein the sprayer is arranged at the outlet end of the crusher; the material conveying and sterilizing system is used for performing microwave sterilization on the medical waste fragments;

the equipment further comprises a tail gas waste heat enthalpy increasing system, the tail gas waste heat enthalpy increasing system comprises a heat exchange device, a tail gas outlet of the material conveying and sterilizing system is connected with a gas inlet of the gas treatment system through a heat release pipe of the heat exchange device, and a heat absorption pipe of the heat exchange device is connected with the sprayer.

The tail gas waste heat enthalpy increasing system further comprises a liquid storage tank, the heat exchange device is located above the liquid storage tank, and a heat absorption pipe of the heat exchange device is connected with the sprayer through the liquid storage tank.

The heat exchange device is a sleeve type falling film evaporator and comprises an inner pipe and an outer pipe; the tail gas outlet of the material conveying and sterilizing system is connected with the gas inlet of the gas treatment system through the inner pipe, and the water outlet at the bottom of the outer pipe is connected with the water inlet at the top of the liquid storage tank.

The tail gas waste heat enthalpy-increasing system further comprises a circulating water pump, a circulating water outlet is arranged below the liquid storage tank, the water inlet end of the circulating water pump is connected with the circulating water outlet, and the water outlet end of the circulating water pump is connected with the top water inlet of the outer pipe.

Wherein, the bottom air inlet of the inner pipe is connected with the tail gas outlet of the material conveying and sterilizing system, and the top air outlet of the inner pipe is connected with the air inlet of the gas treatment system; a filter wire mesh layer is arranged at an air outlet at the top of the inner pipe;

the inner pipe is internally provided with a pipe shaft and liquid blocking discs which are staggered along the axial direction of the pipe shaft, the bottom of the inner pipe is provided with a condensed water outlet, and the condensed water outlet is connected with a condensed water inlet at the top of the liquid storage tank.

The gas treatment system comprises a gas purification device and an induced draft fan, wherein a gas inlet of the induced draft fan is connected with a gas outlet of the gas purification device, and a tail gas outlet of the material conveying sterilization system is connected with the gas inlet of the gas purification device through a heat release pipe of the heat exchange device; the gas inlet of the gas purification device is also communicated with a crushing bin of the crusher and used for providing a negative pressure environment for the crushing bin.

The crusher also comprises a discharge bin arranged below the crushing bin, the plurality of sprayers are arranged above the discharge bin, and a stirring device is also arranged in the discharge bin; the discharge hole of the discharge bin is connected with the feed inlet of the material conveying sterilization system;

the feed crushing system also comprises a weighbridge, a material barrel and a lifter, wherein the weighbridge is used for weighing medical waste to be treated, and the lifter is used for lifting and dumping the medical waste in the material barrel into the crushing material barrel;

and a hydraulic cover is arranged at the top of the crushing bin.

Wherein, gaseous purifier include the box and along the gas flow direction install in proper order UV photodissociation catalytic deodorization steriliser, well effect air cleaner, high efficiency air cleaner and multilayer activated carbon absorber in the box, gaseous purifier's air inlet still is provided with the current equalizer.

The material conveying and sterilizing system comprises a microwave sterilizer and a screw conveyor arranged in the microwave sterilizer, a feed inlet of the screw conveyor is connected with an outlet end of the crusher, and an exhaust port of the screw conveyor is connected with an air inlet of the gas treatment system through a heat release pipe of the heat exchange device;

the spiral conveyor comprises a pipe shell and a spiral blade arranged in the pipe shell, the spiral blade pushes the medical waste fragments to move along the axial direction of the pipe shell through rotation and simultaneously generate radial rolling, and the pipe shell is arranged in an inclined upward direction along the conveying direction of the medical waste fragments;

the microwave sterilizer comprises an electrical appliance box and a plurality of microwave generators arranged in the electrical appliance box, wherein the microwave generators are arranged on the outer side of the pipe shell; the wall of the electrical box is provided with a microwave suppressor, and the top wall and the side wall of the electrical box are also provided with heat dissipation ports.

The shell is made of polytetrafluoroethylene materials or glass fiber reinforced polypropylene materials, and the propeller blades are made of polytetrafluoroethylene materials;

the gap between the microwave generator and the pipe shell is 2mm-3mm, and the microwave generator is arranged on the left side and/or the right side and/or the upper side of the pipe shell.

The medical waste microwave sterilization equipment provided by the utility model has the advantages that the medical waste to be treated is crushed, destroyed and reduced in volume by the crusher, and the medical waste fragments are sprayed and wetted by the sprayer and then enter the material conveying and sterilizing system; the feeding crushing system provides medical waste fragments to be treated with proper size and proper humidity for the material conveying sterilization system, and the material conveying sterilization system adopts microwaves to sterilize the medical waste fragments so as to inactivate microorganisms such as bacteria and viruses in the medical waste and achieve the purpose of sterilization. Medical waste fragments are transported and subjected to microwave sterilization in the material conveying and sterilizing system, sterilized materials are discharged from a discharge port, and tail gas enters a gas treatment system through a heat release pipe of a heat exchange device of a tail gas waste heat enthalpy-increasing system to be deodorized, purified and discharged, so that the medical waste crushing and sterilizing process is completed. Because the tail gas discharged by the material conveying and sterilizing system has higher temperature, when passing through the heat-releasing pipe of the heat-exchanging device, the tail gas can preheat the spray water flowing through the heat-releasing device, and the temperature of the spray water sprayed to medical waste fragments by the sprayer is increased, so that the aim of recycling waste heat is fulfilled, and the overall energy consumption of equipment is reduced. Therefore, the utility model provides a medical waste microwave sterilization equipment adopts the microwave sterilization mode, has effectively solved current medical waste treatment method and has had the easy damage equipment such as tar that causes secondary pollution easily, the processing cost is high, the processing procedure produces, the easy damage equipment such as equipment maintenance degree of difficulty, with high costs, can high efficiency breakage, effective sterilization, reduce cost, solve the hidden danger that high temperature treatment exists, and carry out tail gas waste heat utilization through tail gas waste heat enthalpy-increasing system, effectively reduced the whole energy consumption of equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a microwave sterilization device for medical waste provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of a gas purification apparatus according to another embodiment of the present invention;

fig. 3 is a schematic view of a microwave generator of a material conveying sterilization system according to another embodiment of the present invention;

fig. 4 is a schematic structural view of an enthalpy-increasing system by waste heat of tail gas according to another embodiment of the present invention;

in the figure: 1. a wagon balance; 2. a charging bucket; 3. a hoist; 4. a positioning sensor; 5. a crusher; 6. a discharge humidity sensor; 7. a sprayer; 8. a stirring device; 9. a feed inlet of a screw conveyor; 10. a spray water temperature sensor; 11. a spray water pump; 12. a spray flow regulating valve; 13. a screw conveyor; 14. a microwave sterilizer; 15. a support frame; 16. a delivery temperature sensor; 17. a delivery pressure sensor; 18. an exhaust port of the screw conveyor; 19. an exhaust gas filter; 20. a discharge port of the screw conveyor; 21. a baffle plate; 22. an induced draft fan; 23. a gas purification device; 24. a one-way check valve; 25. a heat exchange device; 26. an induced draft electromagnetic valve; 27. an induced air filter; 1401. a microwave generator; 1402. a heat dissipation port; 1403. an electrical box; 1404. a microwave suppressor; 1405. a pipe shell; 2301. a UV photolysis catalysis deodorization sterilizer; 2302. a current equalizer; 2303. a medium efficiency air filter; 2304. a high efficiency air filter; 2305. a multi-layer activated carbon adsorber; 2306. a box body; 2501. an outer tube; 2502. an inner tube; 2503. a liquid blocking disc; 2504. a tubular shaft; 2505. a cooling water outlet temperature sensor; 2506. a pressure relief valve; 2507. a tank pressure sensor; 2508. a liquid filling port; 2509. a liquid level sensor; 2510. an in-tank temperature sensor; 2511. a spray water filter screen; 2512. a liquid storage tank; 2513. a heat-insulating layer; 2514. a sewage draining outlet; 2515. a circulating water filter screen; 2516. a circulation flow regulating valve; 2517. a water circulating pump; 2518. a condensing solenoid valve; 2519. a bottom air inlet temperature sensor; 2521. a cooling water inlet temperature sensor; 2522. an exhaust gas humidity sensor; 2523. and a top air outlet temperature sensor.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "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 as appropriate by those of ordinary skill in the art.

In the description of the present invention, the terms "plurality", and "plural" mean two or more unless otherwise specified.

As shown in fig. 1 to 4, an embodiment of the present invention provides a medical waste microwave sterilization apparatus, which includes a feeding crushing system, a material conveying sterilization system and a gas treatment system, which are sequentially arranged; the feeding crushing system comprises a crusher 5 for crushing medical waste and a sprayer 7 for spraying water to wet medical waste fragments, wherein the sprayer 7 is arranged at the outlet end of the crusher 5; the material conveying sterilization system is used for performing microwave sterilization on medical waste fragments. The embodiment of the utility model provides a medical waste microwave sterilization equipment still includes the tail gas waste heat and increases the enthalpy system, and the tail gas waste heat increases the enthalpy system and includes heat transfer device 25, and defeated material sterilization system's tail gas export is connected with gas processing system's air inlet through heat transfer device 25's exothermic pipe, and heat transfer device 25's heat absorption pipe is connected with spray thrower 7.

By adopting the medical waste microwave sterilization equipment provided by the embodiment of the utility model, the medical waste to be treated is crushed, destroyed and reduced in volume by the crusher 5, and the sprayer 7 sprays and wets the medical waste fragments and then enters the material conveying sterilization system; the feeding crushing system provides medical waste fragments to be treated with proper size and proper humidity for the material conveying sterilization system, and the material conveying sterilization system adopts microwaves to sterilize the medical waste fragments so as to inactivate microorganisms such as bacteria and viruses in the medical waste and achieve the purpose of sterilization. Medical waste fragments are transported and sterilized by microwaves in the material conveying and sterilizing system, the sterilized materials are discharged from the discharge port, and tail gas enters the gas treatment system through the heat release pipe of the tail gas waste heat enthalpy-increasing system heat exchange device 25 to be deodorized, purified and discharged, so that the medical waste crushing and sterilizing process is completed. Because the tail gas discharged by the material conveying and sterilizing system has higher temperature, when passing through the heat release pipe of the heat exchange device 25, the spray water passing through the heat release device can be preheated, and the temperature of the spray water sprayed to the medical waste fragments by the sprayer 7 is increased, so that the purpose of waste heat recovery and utilization is achieved, and the overall energy consumption of the equipment is reduced.

The embodiment of the utility model provides a medical waste microwave sterilization equipment adopts the microwave sterilization mode, effectively solved current medical waste treatment method and had easily cause secondary pollution, the processing cost is high, easy damage equipment such as tar that the processing procedure produced, the easy damage equipment such as the machine maintenance degree of difficulty, with high costs, can high efficiency breakage, effectively disinfect, reduce cost, solve the hidden danger that high temperature treatment exists, and carry out tail gas waste heat utilization through tail gas waste heat enthalpy increasing system, effectively reduced the whole energy consumption of equipment.

In one embodiment, as shown in fig. 4, the exhaust gas waste heat enthalpy increasing system further includes a liquid storage tank 2512, the heat exchanging device 25 is located above the liquid storage tank 2512, and a heat absorbing pipe of the heat exchanging device 25 is connected with the sprayer 7 through the liquid storage tank 2512; a spray water outlet is arranged on the side wall of the liquid storage tank 2512 and connected with the sprayer 7, a spray water pump 11, a spray flow regulating valve 12 and a spray water temperature sensor 10 are arranged on a connecting pipeline between the spray water outlet and the sprayer 7, and a spray water filter screen 2511 can be arranged at the spray water outlet. The tank body of the liquid storage tank 2512 can be provided with an insulating layer 2513, the bottom of the tank body can be provided with a sewage discharge port 2514, the top of the tank body can be provided with a liquid filling port 2508, a tank body pressure sensor 2507 and a pressure relief valve 2506, and the side wall of the tank body can be further provided with a liquid level sensor 2509 and a tank body temperature sensor 2510.

In one embodiment, heat exchange device 25 is a double tube falling film evaporator comprising an inner tube 2502 and an outer tube 2501; the inner pipe 2502 is a heat release pipe, and a tail gas outlet of the material conveying and sterilizing system is connected with a gas inlet of the gas treatment system through the inner pipe 2502; the outer tube 2501 is a heat absorbing tube, and a water outlet at the bottom of the outer tube 2501 is connected with a water inlet at the top of the liquid storage tank 2512.

In a specific embodiment, the exhaust gas waste heat enthalpy increasing system further comprises a circulating water pump 2517, a circulating water outlet is arranged below the liquid storage tank 2512, and a water inlet end of the circulating water pump 2517 is connected with the circulating water outlet; a circulating water filter screen 2515 can be arranged at the circulating water outlet, and a circulating flow regulating valve 2516 is arranged between the water inlet end of the circulating water pump 2517 and the circulating water outlet; the water outlet end of the circulating water pump 2517 is connected with the top water inlet of the outer pipe 2501.

In one embodiment, the bottom inlet of the inner tube 2502 is connected to the exhaust outlet of the material transfer sterilization system, and the top outlet of the inner tube 2502 is connected to the inlet of the gas treatment system; a pipe shaft 2504 and liquid blocking discs 2503 which are arranged in a staggered mode along the axial direction of the pipe shaft 2504 are arranged in the inner pipe 2502, a condensed water outlet is formed in the bottom of the inner pipe 2502, and the condensed water outlet is connected with a condensed water inlet in the top of the liquid storage tank 2512; the air outlet at the top of the inner tube 2502 is also provided with a filter wire mesh layer for further filtering and condensing the tail gas. The tail gas discharged by the material conveying sterilization system has higher temperature due to the microwave heating effect and higher humidity due to the evaporation of the moisture of the material and spray water, the inner pipe 2502 has the functions of cooling and dehumidifying the high-temperature and high-humidity tail gas, condensed water is condensed on the liquid blocking discs 2503 which are arranged in a staggered mode along the axial direction of the pipe shaft 2504, and flows into the liquid storage tank 2512 from a condensed water outlet at the bottom of the inner pipe 2502 to supplement circulating water in the liquid storage tank 2512, the cyclic utilization of the spray water is realized, the water saving efficiency of equipment is improved, and the operation cost is reduced. In addition, the reduction of the moisture content of the tail gas also contributes to the improvement of the purification and filtration efficiency of the gas treatment system.

In a specific embodiment, the tail gas of high temperature and high humidity of the material conveying and sterilizing system flows into an inner tube 2502 of a vertically-arranged sleeve type falling-film evaporator, both the inner side and the outer side of the inner tube 2502 can be provided with a thread structure, a liquid blocking disc 2503 is arranged in the inner tube 2502, the liquid blocking disc 2503 is arranged on a tube shaft 2504, the tail gas of high temperature and high humidity is cooled and dehumidified in the sleeve type falling-film evaporator to become low temperature and low humidity gas, the low temperature and low humidity gas enters a gas treatment system to be filtered, deodorized and purified and then is discharged, condensed water generated in the cooling and dehumidifying process of the tail gas of high temperature and high humidity drops downwards from the liquid blocking disc 2503, a condensing electromagnetic valve 2518 is arranged on the tube. The circulating water outlet of the liquid storage tank 2512 is connected with a circulating flow regulating valve 2516, the circulating flow regulating valve 2516 is connected with a circulating water pump 2517, circulating water in the liquid storage tank 2512 passes through a circulating water filter screen 2515, the circulating water outlet and the circulating flow regulating valve 2516, is pumped to the top end of the sleeve type falling film evaporator by the circulating water pump 2517 and then is sprayed into the outer pipe 2501, cooling water flows downwards along the outer wall of the inner pipe 2502 and forms reverse convection heat exchange with high-temperature and high-humidity tail gas flowing upwards in the inner pipe 2502, and the threaded structures on the inner side and the outer side of the inner. The cooling water after heat absorption flows into a liquid storage tank 2512, and the water in the liquid storage tank 2512 is pumped to a sprayer 7 by a spray water pump 11 through a spray water filter screen 2511, a spray water outlet and a spray flow regulating valve 12 to spray and wet medical waste fragments. The sprayers 7 can be rotary nozzles, and the sprayers 7 are equidistantly distributed at the outlet end of the crusher 5, and the number of the sprayers 7 is 3-6; the sprayer 7 is connected with a spray water pump 11, the spray water pump 11 is connected with a spray flow regulating valve 12, and the spray flow regulating valve 12 is connected with a liquid storage tank 2512.

In one embodiment, the gas treatment system comprises a gas purification device 23 and an induced draft fan 22, wherein a gas inlet of the induced draft fan 22 is connected with a gas outlet of the gas purification device 23, a tail gas outlet of the material conveying sterilization system is connected with a gas inlet of the gas purification device 23 through a heat release pipe of a heat exchange device 25, and a one-way check valve 24 can be arranged between the heat release pipe of the heat exchange device 25 and the gas inlet of the gas purification device 23 to prevent the tail gas from flowing backwards. The air inlet of the gas purification device 23 is also communicated with the crushing bin of the crusher 5 and used for providing a negative pressure environment for the crushing bin; an induced air electromagnetic valve 26 can be arranged on a connecting pipeline between the crushed aggregate bin and the air inlet of the gas purification device 23, and an induced air filter 27 can be arranged at the communication position of the connecting pipeline and the crushed aggregate bin. Through the suction effect of the draught fan 22, a micro negative pressure state is formed in the crushed aggregate bin, so that microorganisms such as bacteria and viruses and particles in the medical waste can be prevented from escaping to the environment in the feeding process, secondary pollution is prevented, and potential safety hazards in the medical waste treatment process are effectively solved; the induced air filter 27 can primarily filter out larger particles, dust, etc.

In one embodiment, the crusher 5 further comprises a discharge bin arranged below the crushing bin, the plurality of sprayers 7 are arranged above the discharge bin, and the discharge bin is internally provided with a stirring device 8; the discharge hole of the discharge bin is connected with the feed inlet of the material conveying and sterilizing system; the feeding and crushing system further comprises a weighbridge 1, a charging basket 2 and a lifter 3, wherein the weighbridge 1 is used for weighing medical waste to be treated, the lifter 3 is used for lifting the medical waste in the charging basket 2 and conveying the medical waste to be treated into a crushing bin, and the medical waste to be treated is lifted by the lifter 3 and poured into the crushing bin after being weighed by the weighbridge 1 and is crushed, damaged and reduced in volume; the top of the crushing bin is provided with a hydraulic cover.

In a specific embodiment, the weighbridge 1 is connected with a lifting machine 3, a material barrel 2 loaded with medical waste is lifted to a bin opening of a crushing bin by the lifting machine 3 after the weighbridge 1 is weighed, a hydraulic cover is opened, the medical waste is poured into the crushing bin of a crusher 5, an air exhaust port of the crushing bin is provided with an air induction filter 27, the air exhaust port of the crushing bin is connected with an air induction electromagnetic valve 26, the air induction electromagnetic valve 26 is connected with an air purification device 23, the air purification device 23 is connected with an induced draft fan 22, the air induction electromagnetic valve 26 and the induced draft fan 22 are started when the hydraulic cover of the crushing bin is opened, the induced draft fan 22 extracts air in the crushing bin to prevent bacteria, viruses, particles and the like in the medical waste from escaping outwards, and the sucked air enters the air purification device 23 to be; the hydraulic pressure lid in garrulous feed bin is closed after the feeding is accomplished, and medical waste carries out the breakage in confined garrulous feed bin, and the medical waste piece after the breakage falls into the discharge bin, and spray thrower 7 sprays water to the medical waste piece in the discharge bin. Agitating unit 8 can be for having no blade flexible mixing ware, and the flexible mixing ware of no blade in the discharge bin stirs medical waste piece and makes it wet more evenly, and the medical waste piece of pending after even wetting gets into defeated material sterilization system through the discharge gate of discharge bin.

In one embodiment, as shown in fig. 2, the gas purification apparatus 23 comprises a housing 2306, and a UV photolysis catalytic deodorization sterilizer 2301, an intermediate-efficiency air filter 2303, a high-efficiency air filter 2304 and a multi-layer activated carbon adsorber 2305 installed in the housing 2306 in sequence along the gas flow direction to sterilize, filter and adsorb purify the suction gas; the gas inlet of the gas purification device 23 is also provided with a flow equalizer 2302.

In one embodiment, the material conveying and sterilizing system comprises a microwave sterilizer 14 and a screw conveyor 13 arranged in the microwave sterilizer 14, wherein a feed inlet 9 of the screw conveyor is connected with the outlet end of the crusher 5; for example, the discharging bin is connected with the feeding hole 9 of the screw conveyor through a flange, the medical waste fragments to be treated which are uniformly wetted enter the screw conveyor 13 and axially move in the screw conveyor 13, and the microwave sterilizer 14 performs microwave sterilization on the medical waste fragments in the moving process. The screw conveyer 13 comprises an exhaust port and a discharge port, the exhaust port 18 of the screw conveyer is a tail gas outlet of the material conveying and sterilizing system, and the exhaust port 18 of the screw conveyer is connected with an air inlet of the gas treatment system through a heat release pipe of the heat exchange device 25. The screw conveyor 13 includes a pipe shell 1405 and a screw blade provided in the pipe shell 1405, the screw blade generating a radial rolling while pushing the medical waste pieces to move in an axial direction of the pipe shell 1405 by rotating, the pipe shell 1405 being disposed obliquely upward in a conveying direction of the medical waste pieces; for example, the screw conveyor 13 is installed to be inclined at an inclination angle with the horizontal plane, the medical waste fragments move from a downward inclination to an upward inclination, the shaft end cover is arranged at one end of the screw conveyor 13 with a lower height, the support frame 15 is used for supporting the screw conveyor 13 and the microwave sterilizer 14, and the support frame 15 comprises at least two support frames with different heights; the axial direction of tube shell 1405 of screw conveyer 13 is equipped with feed inlet, discharge gate and gas vent respectively, and the height of feed inlet is less than the discharge gate height, and the gas vent is equipped with exhaust filter 19, and the discharge gate is equipped with baffle 21, and motor, speed reducer, bearing assembly install the higher one end in screw conveyer 13 high position. The medical waste sterilized by microwave becomes unrecognizable common waste which is destroyed, reduced, harmless and safe, and is transported along the axial direction of the screw conveyor 13 to pass through the discharge hole 20 of the screw conveyor, and is discharged by opening the baffle 21 under the action of gravity. An exhaust filter 19 is arranged at an exhaust port 18 of the screw conveyor, in the microwave sterilization process, high-temperature and high-humidity gas generated in a pipe shell 1405 of the screw conveyor 13 enters a heat exchange device 25 through the exhaust filter 19 at the exhaust port to be condensed to form low-temperature and low-humidity gas, the low-temperature and low-humidity gas enters a gas purification device 23, and the low-temperature and low-humidity gas is filtered and deodorized in the gas purification device 23 and then is led out and discharged by an induced draft fan 22.

The microwave sterilizer 14 comprises an electric appliance box 1403 and a plurality of microwave generators 1401 arranged in the electric appliance box 1403, wherein the plurality of microwave generators 1401 are arranged on the outer side of a pipe shell 1405; the wall of the electrical box 1403 is provided with a microwave suppressor 1404, and the top and side walls of the electrical box 1403 are further provided with a plurality of heat sinks 1402.

In one embodiment, as shown in fig. 3, the gap between the microwave generator 1401 and the pipe shell 1405 is 2mm-3mm, and the microwave generator 1401 is arranged on the left side and/or the right side and/or the upper side of the pipe shell 1405. For example, the microwave generator 1401 is arranged on the upper, left and right sides of the pipe shell 1405 of the screw conveyor 13 in a crossing manner, so that three-way energy feedback of the microwave generator 1401 is realized, uniformly wetted medical waste fragments are subjected to microwave sterilization while axially moving and radially rolling in the screw conveyor 13, and the medical waste fragments are discharged from the discharge hole 20 of the screw conveyor after sterilization is completed; the three-way energy feedback of the microwave generator 1401 can increase the contact area and the contact time of the microwave and the material to be treated, and improve the microwave sterilization efficiency; the operating frequency of the microwave generator 1401 can be 2450MHz, and the cooling mode can be air cooling.

The medical waste is crushed in a closed environment by combining crushing, wetting, spiral propelling and microwave sterilization, so that particles and the like are prevented from escaping to the environment in the crushing process, and secondary pollution is avoided. In the crushing and wetting process, the medical waste enters the discharging bin after being crushed, is sprayed with water by the sprayer 7 for wetting and is uniformly stirred by the bladeless flexible stirrer; in the microwave sterilization process, uniformly wetted medical waste fragments enter the screw conveyor 13 for transportation and sterilization; the crushed medical waste fragments are wetted and then sterilized by microwaves, so that the contact area of the medical waste and the microwaves in the microwave sterilization process is increased, the medical waste fragments are uniformly wetted to proper humidity, the microwaves can be better absorbed, and the microwave sterilization efficiency is improved; in addition, the wetting process of the sprayer 7 can adopt the same fluid with different temperatures and high-temperature steam, and the sprayer 7 can also be arranged at the feed inlet 9 of the screw conveyor. Screw conveyer 13 makes medical waste radial roll when promoting medical waste piece axial displacement, and increase material collision friction makes it be heated more evenly, the intensification is more rapid, shortens the sterilization time, strengthens the microwave bactericidal effect. The propeller blades of the screw conveyer 13 can adopt shaftless propeller blades, so that the winding of materials in the conveying process is prevented, and the system is more stable and reliable in operation; the screw conveyor 13 may be a shaftless screw conveyor or a shafted screw conveyor. Both the propeller blade and the tube shell 1405 of the screw conveyer 13 can be made of polytetrafluoroethylene materials, and the polytetrafluoroethylene materials do not absorb microwaves, so that the microwave energy feedback loss can be reduced, and the microwave conversion efficiency is improved; the propeller blades and the tube shell 1405 of the screw conveyor 13 may be made of polypropylene, quartz, ceramic, or other good dielectric materials that insulate microwaves, for example, the tube shell 1405 is made of glass fiber reinforced polypropylene. The pipe shell 1405 of the screw conveyer 13 has no additional holes except for the small holes needed to be formed in the transmission of the conveying temperature sensor 16 and the conveying pressure sensor 17, so that the accumulation of high-temperature spontaneous combustion of the pore channels due to the accumulation of materials is avoided; the conveying temperature sensor 16 of the screw conveyor 13 may be an optical fiber sensor that is not affected by microwave radiation, or alternatively a non-contact temperature sensor such as an infrared temperature sensor. The technical measures can enhance the microwave sterilization efficiency, reduce the microwave energy feedback loss and improve the safety and reliability of the treatment process, are suitable for the destruction, reduction, harmlessness and recycling treatment of medical wastes, can also be suitable for the crushing microwave sterilization of materials such as traditional Chinese medicinal materials, dried fruits, non-chemical hazardous wastes and the like, and have the advantages of wide application range, low energy consumption in the treatment process, high sterilization speed and safe and environment-friendly treatment process.

In one embodiment, the real-time online monitoring and intelligent control of the process parameters of each link in the operation process of the equipment are realized by applying a PLC (programmable logic controller) and various sensors based on a fuzzy-PID (proportion integration differentiation) control principle, so that the operation control of the equipment is flexible and efficient, the operation parameters are optimized, and the operation efficiency, reliability and safety of the equipment are improved.

The wagon balance 1 adopts an electronic wagon balance which is connected to the control system and displays the mass of the medical waste to be treated; be provided with the position sensor 4 that is used for fixing a position 2 positions of storage bucket on the lifting machine 3, position sensor 4 is connected to control system, according to the opening and closing of setting for hydraulic cover, induced air solenoid valve 26 and the draught fan 22 of altitude control feed bin of position sensor 4: when the charging basket 2 is lifted to a set height, the control system calculates and sends an instruction, the hydraulic cover, the induced air electromagnetic valve 26, the induced draft fan 22 and the UV photolysis catalytic deodorization sterilizer 2301 are opened, when the hydraulic cover is completely opened, the charging basket 2 is charged, and the induced draft fan 22 sucks gas in the cavity of the crushing bin to prevent microorganisms such as bacteria, viruses and the like from escaping along with particles in the charging process; the control system sets the material pouring time and counts time, when the timing is finished, the control system sends an instruction to close the hydraulic cover, the control system sets the closing delay time of the induced air electromagnetic valve 26, the UV photolysis catalytic deodorization sterilizer 2301 and the induced draft fan 22, the set closing delay time of the induced air electromagnetic valve 26, the UV photolysis catalytic deodorization sterilizer 2301 and the induced draft fan 22 is reached after the hydraulic cover is closed, and the induced air electromagnetic valve 26, the UV photolysis catalytic deodorization sterilizer 2301 and the induced draft fan 22 are closed.

The humidity transducer 6 of unloading in the unloading bin is connected to control system, carries out real-time on-line monitoring and adjusts with the water spray volume of spray thrower 7 to material humidity, realizes the regulation control to the water spray volume of spray thrower 7: when the average water content of the materials in the discharging bin is higher than a set value, the control system calculates and sends out an instruction to reduce the opening degree of the spraying flow regulating valve 12, and when the average water content of the materials in the discharging bin is lower than the set value, the control system calculates and sends out an instruction to increase the opening degree of the spraying flow regulating valve 12 and maintain the humidity of the materials at a set level.

Set up in screw conveyer 13 and carry temperature sensor 16 and transport pressure sensor 17 to control system is connected to, carries out real-time on-line monitoring and regulation to screw conveyer 13's intracavity temperature and pressure, realizes the regulation control to screw conveyer 13's intracavity temperature and pressure: when the temperature of the screw conveyer 13 is higher than a set value, the control system calculates and sends out an instruction to close the microwave generator 1401 with certain power; when the temperature of the screw conveyor 13 is lower than a set value, the control system calculates and sends an instruction, and a microwave generator 1401 with certain power is started to maintain the temperature in the screw conveyor 13 at a set level; when the pressure in the screw conveyor 13 is higher than a set value, the control system calculates and sends out an instruction, and the electromagnetic valve outside the exhaust port 18 of the screw conveyor, the circulating water pump 2517, the circulating flow regulating valve 2516 and the induced draft fan 22 are opened to realize the external exhaust of the screw conveyor 13; when the pressure in the screw conveyor 13 is lower than the set value, the control system calculates and sends out an instruction, and the electromagnetic valve outside the exhaust port 18 of the screw conveyor, the circulating water pump 2517, the circulating flow regulating valve 2516 and the induced draft fan 22 are closed in sequence to maintain the pressure in the cavity of the screw conveyor 13 at the set level.

The top air outlet of the inner tube 2502 of the telescopic falling-film evaporator is provided with a tail gas humidity sensor 2522 connected to a control system, and the humidity data at the top air outlet of the inner tube 2502 is monitored and adjusted on line in real time, so that the humidity control at the top air outlet of the inner tube 2502 is realized: when the humidity at the top air outlet of the inner pipe 2502 is higher than a set value, the control system calculates and sends an instruction, the opening degree of the circulation flow regulating valve 2516 is increased, the rotating speed of the induced draft fan 22 is reduced, and the humidity of the cooled and dehumidified gas is ensured to be at or lower than a set level; a cooling water inlet temperature sensor 2521 and a cooling water outlet temperature sensor 2505 of the outer pipe 2501, a bottom air inlet temperature sensor 2519 and a top air outlet temperature sensor 2523 of the inner pipe 2502 are connected to a control system, so that the temperature data of the sleeve-type falling film evaporator is monitored on line in real time, and the temperature data is provided for calculating the heat exchange quantity.

The liquid level sensor 2509 of the liquid storage tank 2512 is connected to the control system, and real-time online monitoring and adjustment are carried out on the liquid capacity data in the liquid storage tank 2512, so that the adjustment control on the liquid capacity in the liquid storage tank 2512 is realized: when the liquid level of liquid storage tank 2512 is lower than a set value, a control system calculates and sends an instruction to remind a worker to add liquid into liquid storage tank 2512; when the liquid level of reservoir 2512 is higher than the set value, the control system calculates and sends out an instruction to remind the staff that the liquid in reservoir 2512 needs to be discharged and the liquid volume of reservoir 2512 is maintained at the set level. A tank pressure sensor 2507 of the liquid storage tank 2512 is connected to the control system, and pressure data of the liquid storage tank 2512 is monitored and adjusted, so that adjustment control on the pressure in the liquid storage tank 2512 is realized: when the pressure of the liquid storage tank 2512 is higher than a set value, the control system calculates and sends out an instruction, and the pressure relief valve 2506 is opened to relieve the pressure, so that the pressure in the liquid storage tank 2512 is ensured to be at a set level.

Can see by above embodiment, the utility model provides a medical waste microwave sterilization equipment, utilize the broken system of feeding and defeated material sterilization system to accomplish to destroy the shape to medical waste and subtract the appearance and subtract heavy, innoxious and safety processing, and cooperate gas treatment system to carry out sterilization deodorization purification treatment to gas, reach the environmental protection emission requirement, cooperation tail gas waste heat enthalpy-increasing system carries out recycle to moisture in the high temperature and high humidity tail gas, reduce the waste liquid and discharge and reduce the use to the water resource, reach resources are saved and environmental protection emission requirement, when accomplishing smash and the sterilization, adopt tail gas waste heat enthalpy-increasing system recycle system waste heat resource heating to spray water, realize system energy conservation, finally guarantee system low cost, safety, high efficiency, the steady operation. Therefore, the embodiment of the utility model provides an effectively overcome current medical waste treatment method and produce secondary pollution easily, investment and working costs are high, the addressing difficulty, the processing back waste still can be discerned, the processing back waste reduces the appearance and subtracts the weight inconspicuously, the stability of system is easily influenced scheduling problem, response medical waste treatment facility's miniaturization and the dispersion normal position treatment requirement that is leading to non-burning technique, the medical waste microwave sterilization equipment of tail gas waste heat enthalpy is provided, possible sterilization efficiency is high, high speed, prevent secondary pollution, the energy consumption is low, easy operation, easy maintenance, the running cost is lower, the waste destroys the shape and reduces the appearance and subtracts the weight and innoxious after the processing, equipment is portable or fixed, satisfy the environmental protection requirement.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The microwave sterilization equipment for the medical waste is characterized by comprising a feeding crushing system, a material conveying sterilization system and a gas treatment system which are sequentially arranged; the feeding crushing system comprises a crusher for crushing medical waste and a sprayer for spraying water to wet medical waste fragments, wherein the sprayer is arranged at the outlet end of the crusher; the material conveying and sterilizing system is used for performing microwave sterilization on the medical waste fragments;

the equipment further comprises a tail gas waste heat enthalpy increasing system, the tail gas waste heat enthalpy increasing system comprises a heat exchange device, a tail gas outlet of the material conveying and sterilizing system is connected with a gas inlet of the gas treatment system through a heat release pipe of the heat exchange device, and a heat absorption pipe of the heat exchange device is connected with the sprayer.

2. The medical waste microwave sterilization equipment of claim 1, wherein the tail gas waste heat enthalpy-increasing system further comprises a liquid storage tank, the heat exchanging device is positioned above the liquid storage tank, and a heat absorbing pipe of the heat exchanging device is connected with the sprayer through the liquid storage tank.

3. The medical waste microwave sterilization apparatus of claim 2, wherein the heat exchanging device is a tube-in-tube falling film evaporator including an inner tube and an outer tube; the tail gas outlet of the material conveying and sterilizing system is connected with the gas inlet of the gas treatment system through the inner pipe, and the water outlet at the bottom of the outer pipe is connected with the water inlet at the top of the liquid storage tank.

4. The medical waste microwave sterilization equipment according to claim 3, wherein the tail gas waste heat enthalpy-increasing system further comprises a circulating water pump, a circulating water outlet is arranged below the liquid storage tank, a water inlet end of the circulating water pump is connected with the circulating water outlet, and a water outlet end of the circulating water pump is connected with a top water inlet of the outer pipe.

5. The microwave medical waste sterilization device according to claim 3, wherein the bottom air inlet of the inner tube is connected with the tail gas outlet of the material conveying sterilization system, and the top air outlet of the inner tube is connected with the air inlet of the gas treatment system; a filter wire mesh layer is arranged at an air outlet at the top of the inner pipe;

the inner pipe is internally provided with a pipe shaft and liquid blocking discs which are staggered along the axial direction of the pipe shaft, the bottom of the inner pipe is provided with a condensed water outlet, and the condensed water outlet is connected with a condensed water inlet at the top of the liquid storage tank.

6. The medical waste microwave sterilization equipment according to claim 1, wherein the gas treatment system comprises a gas purification device and an induced draft fan, a gas inlet of the induced draft fan is connected with a gas outlet of the gas purification device, and a tail gas outlet of the material conveying sterilization system is connected with a gas inlet of the gas purification device through a heat release pipe of the heat exchange device; the gas inlet of the gas purification device is also communicated with a crushing bin of the crusher and used for providing a negative pressure environment for the crushing bin.

7. The medical waste microwave sterilization equipment of claim 6, wherein the crusher further comprises a discharge bin disposed below the crushing bin, the plurality of sprayers are disposed above the discharge bin, and a stirring device is further disposed in the discharge bin; the discharge hole of the discharge bin is connected with the feed inlet of the material conveying sterilization system;

the feed crushing system also comprises a weighbridge, a material barrel and a lifter, wherein the weighbridge is used for weighing medical waste to be treated, and the lifter is used for lifting and dumping the medical waste in the material barrel into the crushing material barrel;

and a hydraulic cover is arranged at the top of the crushing bin.

8. The medical waste microwave sterilization equipment of claim 6, wherein the gas purification device comprises a box body, and a UV photolysis catalytic deodorization sterilizer, a middle-effect air filter, a high-efficiency air filter and a multilayer activated carbon adsorber which are sequentially installed in the box body along the gas flow direction, and the gas inlet of the gas purification device is further provided with a flow equalizer.

9. The microwave medical waste sterilization equipment according to claim 1, wherein the material conveying and sterilization system comprises a microwave sterilizer and a screw conveyor arranged in the microwave sterilizer, a feed inlet of the screw conveyor is connected with an outlet end of the crusher, and an exhaust port of the screw conveyor is connected with an air inlet of the gas treatment system through an exhaust pipe of the heat exchange device;

the spiral conveyor comprises a pipe shell and a spiral blade arranged in the pipe shell, the spiral blade pushes the medical waste fragments to move along the axial direction of the pipe shell through rotation and simultaneously generate radial rolling, and the pipe shell is arranged in an inclined upward direction along the conveying direction of the medical waste fragments;

the microwave sterilizer comprises an electrical appliance box and a plurality of microwave generators arranged in the electrical appliance box, wherein the microwave generators are arranged on the outer side of the pipe shell; the wall of the electrical box is provided with a microwave suppressor, and the top wall and the side wall of the electrical box are also provided with heat dissipation ports.

10. The medical waste microwave sterilization device of claim 9, wherein the tube shell is made of polytetrafluoroethylene material or glass fiber reinforced polypropylene material, and the propeller blade is made of polytetrafluoroethylene material;

the gap between the microwave generator and the pipe shell is 2mm-3mm, and the microwave generator is arranged on the left side and/or the right side and/or the upper side of the pipe shell.

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