Harmless incinerator for small experimental animal carcasses

Abstract

The invention discloses a harmless incinerator for small experimental animal carcasses, and belongs to the technical field of incinerators. The furnace body is integrally formed by a rotary silo at the upper part and a combustion bin at the lower part; the rotary incineration assembly comprises a rotary drum rotationally mounted in the rotary drum bin; the vibration grinding assembly comprises a hopper fixed in the combustion bin and a concave spherical container arranged in the middle of the hopper; the combustor assembly comprises a combustor which is mounted in the combustion bin; and the negative pressure adsorption device is communicated with the furnace body. The rotary incineration assembly driven by the electric servo driving mechanism is adopted, primary incineration can be conducted on fed materials without dead corners, the rolling part is controlled to rotate in a reciprocating mode to achieve primary incineration and rolling of the fed materials, and then the materials rolled into small particles are screened into the vibration grinding assembly through the screening part to be further pulverized.

Description

Technical Field

[0001] The invention relates to a small-sized harmless incinerator for experimental animal corpses, belonging to the technical field of incinerators. Background Art

[0002] Small laboratory animals, such as mice, rats, rabbits, and guinea pigs, play a vital role in the field of medical research. They are often used as model organisms for drug screening and experimental analysis to promote scientific research and medical discoveries. The disposal of laboratory animal carcasses must follow relevant policies and take harmless measures. Common methods include high-temperature incineration, chemical disinfectant treatment, or high-pressure steam sterilization technology to effectively prevent the spread of pathogenic microorganisms and protect the ecological environment from pollution.

[0003] Incineration is an efficient means of harmless disposal of small experimental animal carcasses, and it has significant advantages in ensuring the complete inactivation of pathogens. At present, most hospitals tend to rely on professional harmless disposal agencies outside the hospital to dispose of small experimental animal carcasses by incineration. However, this practice not only makes the transportation cost far exceed the actual incineration cost, but also there is a risk of leakage of infectious pathogens during the entire transportation and loading and unloading process, which may pose a potential threat to the environment and public health. Therefore, promoting the localized harmless disposal of small experimental animal carcasses in hospitals has become a development direction that urgently needs attention. In particular, for small experimental animal carcasses that are small in size and highly infectious, the use of miniaturized and professional incineration equipment for disposal within medical institutions can not only significantly reduce transportation risks, but also improve processing efficiency and safety.

[0004] There are also some small-scale incinerators with relatively simple structures. They use burners to incinerate small experimental animal carcasses. The temperature is generally above 600°C, which can effectively disinfect and sterilize. However, there are also the following defects in the combustion process: 1. There may be dead corners in the combustion of materials, and the combustion is not complete, which may cause infection risks when handling ashes; 2. Infectious bacteria in the incinerator may spread with the smoke, increasing the risk of environmental and personnel infection.

[0005] Therefore, it is crucial to develop an efficient incinerator designed for small experimental animal carcasses in medical institutions and laboratories. The incinerator must ensure that the carcasses of small experimental animals can be completely burned, thereby achieving the goal of complete harmlessness. In addition, the incinerator must also be integrated with a negative pressure adsorption device to effectively capture and treat the smoke released during the incineration process, and be equipped with a powerful sterilization and disinfection function to ensure that the safety and reliability of the incineration process are fully guaranteed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a harmless incinerator for small experimental animal carcasses, so that medical institutions can complete two-stage combustion and grinding treatment locally to generate harmless solid ash, greatly reducing the risk of pathogen transmission.

[0007] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0008] A small-scale harmless incinerator for experimental animal carcasses, comprising:

[0009] A furnace body, wherein the furnace body is integrally composed of an upper rotary silo and a lower combustion silo, the furnace body is mounted on a vibrating chassis, and the rotary silo is provided with an openable feeding channel;

[0010] A rotating incineration assembly, the rotating incineration assembly comprises a rotating drum rotatably mounted in a rotating drum silo, and an electric servo drive mechanism driving the rotating drum to rotate, the end surface of the rotating drum is provided with a feeding hole corresponding to the position of the feeding channel, the circumferential side surface of the rotating drum is divided into a screening part and a rolling part, the screening part of the rotating drum is provided with a screening gap, and a plurality of rolling balls with a diameter greater than the width of the screening gap are placed inside the rotating drum;

[0011] A vibration grinding assembly, the vibration grinding assembly comprising a hopper fixed in the combustion chamber and a concave spherical container arranged in the middle of the hopper, a plurality of first grinding balls are placed in the spherical container, a circular grinding channel is arranged at the bottom of the spherical container, and a second grinding ball for grinding the output material into powder is installed in the grinding channel;

[0012] A burner assembly, the burner assembly comprising a burner installed in a combustion chamber, and a deflection baffle rotatably installed in front of the burner nozzle for changing the flame injection direction;

[0013] A negative pressure adsorption device is connected to the furnace body, and the negative pressure adsorption device sucks the inside of the furnace body to maintain the inside of the furnace body in a negative pressure state. The air inlet end of the negative pressure adsorption device is equipped with a pre-smoke disinfection mechanism for disinfecting the extracted exhaust gas.

[0014] Preferably, the pre-smoke disinfection mechanism includes a smoke collection hood, a spiral tube, and a connecting pipe. The smoke collection hood is arranged on the top of the rotary silo. The smoke collection hood is connected to the spiral tube arranged between the burner nozzle and the deflection baffle through the connecting pipe. The other end of the spiral tube is connected to the negative pressure adsorption device through the connecting pipe.

[0015] Preferably, the negative pressure adsorption device comprises:

[0016] A negative pressure fan is connected to the furnace body and sucks the inside of the furnace body to maintain a negative pressure state of the furnace body;

[0017] A cyclone separator is connected between the negative pressure fan and the furnace body and is used for gas-solid separation of the flue gas. The air inlet end of the cyclone separator is connected to a pre-flue gas disinfection mechanism arranged in the furnace body.

[0018] The absorption tank is connected between the cyclone separator and the negative pressure fan and is used to adsorb and filter the flue gas after gas-solid separation.

[0019] Preferably, the absorption tank is a sealed tank body, an air inlet end is arranged at the bottom of the absorption tank, an exhaust end is arranged at the top of the absorption tank, and a circulating water cooling pipe and a filtering adsorption layer are arranged in sequence from bottom to top, wherein a steel wire mesh layer is welded on the outer surface of the circulating water cooling pipe.

[0020] Preferably, a sealed air mixing chamber is also provided in the furnace body, the air outlet end of the front flue gas disinfection mechanism is connected to the bottom of the air mixing chamber, the upper part of the air mixing chamber is connected to the air inlet end of the cyclone separator, a mixing air pipe is sealed and inserted into the top of the air mixing chamber, a one-way valve that only allows gas to flow in is provided at the top of the mixing air pipe, an adjustable air inlet valve is provided at the air inlet end of the one-way valve, the adjustable air inlet valve is connected to a cold air supply pipe, and a series of air inlet holes are provided on the wall of the mixing air pipe in the air mixing chamber.

[0021] Preferably, the electric servo drive mechanism includes a servo motor whose rotation angle is precisely controlled by a controller. The servo motor is installed outside the furnace body and drives the rotating shaft of the drum to rotate through a first sprocket drive mechanism. When the servo motor rotates the crushing part of the drum to the lower part and maintains a pendulum-like forward and reverse rotation, the burner heats the crushing part of the drum to carbonize the material, and the crushing balls crush and grind the carbonized material. At this time, the vibrating chassis can concentrate the crushed material to the bottom of the crushing part, which is repeatedly crushed by the crushing balls. When the servo motor rotates the screening part of the drum to the lower part and maintains a pendulum-like forward and reverse rotation, the material smaller than the screening gap gradually falls from the screening gap.

[0022] Preferably, the first sprocket drive mechanism includes a first driving sprocket, a first rotating sprocket and a first chain. The first driving sprocket is installed on the rotating shaft of the servo motor, and the first rotating sprocket is installed on the rotating shaft of the rotating drum. The first driving sprocket and the first rotating sprocket are driven by the first chain.

[0023] Preferably, the vibration chassis includes a base, and a vibration seat installed above the base through a plurality of elastic members, and also includes a vibrator installed on the vibration seat, and a furnace body is fixed on the vibration seat.

[0024] Preferably, the outer circumferential side of the rotating drum is provided with teeth grooves at equal intervals, and a cleaning gear roller meshing with the teeth grooves of the rotating drum is installed in the furnace body. The screening gap of the screening part is formed by digging the teeth grooves outward at the inner circumference of the rotating drum. When the cleaning gear roller rolls to the screening part, the material blocked in the screening gap is pressed into the inside of the rotating drum, and the outer end of the cleaning gear roller drives the second grinding ball to rotate through the second sprocket drive mechanism.

[0025] Preferably, a pull-out ash box is provided at the bottom of the combustion chamber.

[0026] The beneficial effects of the present invention are:

[0027] (1) The rotating incineration component driven by an electric servo drive mechanism can perform preliminary incineration of the feed without blind spots. The reciprocating rotation of the rolling part is controlled to achieve preliminary incineration and rolling of the feed, and then the screening part is used to screen the material that has been rolled into small particles into the vibration grinding component for further powderization;

[0028] (2) This structure can also process discarded medical supplies from hospitals, such as disposable infusion supplies such as infusion needles, injection needles, and blood collection needles with sharp objects. The sharp objects are separated from the ashes in the vibration grinding assembly and can be recycled and reused;

[0029] (3) A negative pressure adsorption device with a pre-smoke disinfection mechanism is used. Even when the internal temperature is not high enough in the initial stage, the smoke drawn from the furnace can be sterilized more thoroughly. Even after the external negative pressure adsorption device is saturated with adsorption, the risk of infection is basically eliminated, further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a front structural schematic diagram of the present invention;

[0032] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0033] Figure 4 Schematic diagram of the internal structure of the furnace;

[0034] Figure 5 It is a structural schematic diagram of a rotating drum;

[0035] Figure 6 It is a schematic diagram of the drum drive structure;

[0036] Figure 7 It is a schematic diagram of the side structure of the furnace;

[0037] Figure 8 It is a schematic diagram of the structure of the vibration grinding assembly;

[0038] Fig. 9 It is a structural diagram of the pre-smoke disinfection mechanism;

[0039] Fig.10 It is a structural schematic diagram of the main part of the negative pressure adsorption device;

[0040] Fig.11 It is a schematic diagram of the three-dimensional structure of the main part of the negative pressure adsorption device;

[0041] Fig.12 It is the structural schematic diagram of the absorption tank;

[0042] Fig.13 It is a schematic diagram of the structure of a drum with a self-cleaning function;

[0043] Fig.14 It is a schematic diagram of the structure when the rotating drum with tooth grooves and the cleaning gear are meshed;

[0044] Fig.15 A schematic diagram of the structure when cleaning the gears and cleaning the gaps in the drum;

[0045] Fig.16 It is a structural schematic diagram of the back of the furnace body.

[0046] In the figure:

[0047] 1. Furnace body; 101. Rotating silo; 102. Combustion chamber; 103. Feeding channel; 104. Pull-out ash storage box; 105. Air mixing chamber; 106. Air mixing pipe; 107. One-way valve; 108. Adjustable air inlet valve; 109. Air inlet hole; 110. Access hole;

[0048] 2. Rotating incineration assembly; 201. Rotating drum; 202. Supporting part; 203. Rotating shaft; 204. Feeding hole; 205. Screening part; 206. Rolling part; 207. Screening gap; 208. Rolling ball; 209. Tooth groove; 210. Cleaning gear roller; 211. Second driving sprocket; 212. Second transmission sprocket; 213. Second chain;

[0049] 3. Vibration grinding assembly; 301. Hopper; 302. Spherical container; 303. First grinding ball; 304. Grinding channel; 305. Second grinding ball; 306. Drive shaft;

[0050] 4. Burner assembly; 401. Burner; 402. Deflection baffle; 403. Switching shaft; 404. Eccentric block; 405. Cylinder;

[0051] 5. Negative pressure adsorption device; 501. Negative pressure fan; 502. Cyclone separator; 503. Absorption tank; 504. Circulating water cooling pipe; 505. Filter adsorption layer; 506. Steel wire mesh layer;

[0052] 6. Vibration chassis; 601. base; 602. elastic member; 603. vibration seat; 604. vibrator;

[0053] 7. Electric servo drive mechanism; 701. Servo motor; 702. First drive sprocket; 703. First rotating sprocket; 704. First chain;

[0054] 8. Pre-smoke disinfection mechanism; 801. Smoke collecting hood; 802. Spiral tube; 803. Connecting tube. DETAILED DESCRIPTION

[0055] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0056] Before using this incinerator for harmless treatment, the carcasses of small experimental animals in the hospital need to be frozen, broken into 10-20mm particles, and then put into this small experimental animal carcass harmless incinerator for incineration treatment.

[0057] like Figure 1-Figure 4 As shown, the small-scale harmless incinerator for experimental animal carcasses includes: a furnace body 1, a rotating incineration component 2 arranged in the furnace body 1 for preliminary incineration, a vibration grinding component 3 for complete incineration and grinding, and a burner component 4 for providing an incineration flame, and a negative pressure adsorption device 5 for sucking the inside of the furnace body 1 to prevent smoke from overflowing.

[0058] The furnace body 1 is integrally composed of an upper rotary silo 101 and a lower combustion silo 102. The furnace body 1 is mounted on a vibrating chassis 6. The rotary silo 101 is provided with an openable feeding channel 103. Heat insulation material is provided outside the furnace body 1 to prevent accidental contact and burns.

[0059] In some embodiments, the vibration chassis 6 includes a base 601, a vibration base 603 mounted on the base 601 through a plurality of elastic members 602, and a vibrator 604 mounted on the vibration base 603, and a furnace body 1 is fixed on the vibration base 603. The elastic member 602 can be a spiral spring or a butterfly spring. The eccentric vibration of the vibrator 604 causes the vibration chassis 6 and the furnace body 1 fixed on the vibration chassis 6 to vibrate together.

[0060] In some embodiments, a pull-out ash storage box 104 is provided at the bottom of the combustion chamber 102. Under the action of the vibration chassis 6, the pull-out ash storage box 104 will vibrate and spread the ashes to prevent the ashes from being too concentrated in the middle.

[0061] like Figure 5-Figure 7As shown, the rotary incineration assembly 2 includes a rotary drum 201 rotatably mounted in a rotary drum silo 101, and the rotary drum 201 is made of steel material or ceramic material that can withstand 1100°C. Among them, the steel material can be selected from 310S stainless steel, which has excellent high-temperature strength and oxidation resistance, can still maintain good mechanical properties at a high temperature of 1100°C, is not prone to deformation and oxidation corrosion, has a high melting point, and can be used for a long time in a high-temperature environment. A rotating shaft 203 is fixed on the central axis of the rotary drum 201 through a support portion 202, and the rotating shaft 203 is rotatably mounted on the furnace body 1 through a packing sealing structure.

[0062] The rotary drum 201 also includes an electric servo drive mechanism 7 for driving the rotary drum 201 to rotate. The end surface of the rotary drum 201 is provided with a feed hole 204 corresponding to the position of the feed channel 103. The frozen and crushed small animal carcass particles enter the rotary drum 201 from the feed channel 103 and the feed hole 204, and then the feed channel 103 is closed, so that the particles are burned in the rotary drum 201. The circumferential side of the rotary drum 201 is divided into a screening part 205 and a rolling part 206. The screening part 205 occupies an angle a range of 30-60° on the circumference, and the remaining area is the rolling part 206. The screening portion 205 of the drum 201 is provided with a screening gap 207, the length of the screening gap 207 is 100-500mm, and the width of the screening gap 207 is 2-5mm. This width is larger than the diameters of almost all common needles (the diameters of common needles range from 0.18mm to 1.2mm). When incinerating medical waste with needles, it is beneficial for the needles to fall from the screening gap 207. A number of rolling balls 208 with a diameter larger than the width of the screening gap 207 are placed inside the drum 201. The diameter of the rolling balls 208 is 30-100mm. Ceramic balls or 310S stainless steel with a rough surface can be used.

[0063] The rolling balls 208 not only have the effect of rolling the materials, but also have the function of self-cleaning the drum 201. The drum 201 is provided with a circular chamfer whose radius is larger than the radius of the rolling balls 208. As the drum 201 rotates continuously, the rolling balls 208 continuously rub against the inner wall of the drum 201 without dead angles, thereby cleaning the inner wall of the drum 201.

[0064] like Figure 3 , Figure 4 As shown, the burner assembly 4 includes a burner 401 installed in the combustion chamber 102, and a deflection baffle 402 rotatably installed in front of the nozzle of the burner 401 for changing the direction of flame injection. In the furnace body 1 with a maximum temperature of 1100°C, the burner 401 can be a gas burner. By accurately controlling the input of natural gas and air (or oxygen), the natural gas and the air blown in by the high-pressure fan are fully and evenly mixed in the combustion head, and the ignition device ignites the mixed gas, and the flame is ejected from the nozzle, providing a stable high-temperature heat source for the incinerator.

[0065] like Figure 4 , Fig.16 As shown, the deflection baffle 402 is connected to a switching shaft 403 rotatably mounted on the side of the furnace body 1, and an eccentric block 404 is fixed to the outer end of the switching shaft 403. The eccentric block 404 can be driven to rotate by a cylinder 405 to switch the flame spray direction. Initially, the flame spray direction is toward the bottom of the rotating drum 201; after switching, the flame spray direction is toward the spherical container 302.

[0066] like Figure 6 As shown, in some embodiments, the electric servo drive mechanism 7 includes a servo motor 701 whose rotation angle is precisely controlled by a controller. The servo motor 701 is installed on the outside of the furnace body 1 and drives the rotating shaft 203 of the rotating drum 201 to rotate through the first sprocket drive mechanism. When the servo motor 701 rotates the crushing part 206 of the rotating drum 201 to the lower part and maintains the pendulum-like forward and reverse rotation, the burner 401 heats the crushing part 206 of the rotating drum 201 so that the internal temperature is maintained at 400-900°C, the material is gradually carbonized, and the crushing ball 208 repeatedly crushes and grinds the carbonized material. At this time, the vibrator 604 can concentrate the crushed material to the bottom of the crushing part 206, which is repeatedly crushed by the crushing ball 208. When there is no liquid material inside, the screening part 205 of the drum 201 is rotated to the bottom by the servo motor 701 and maintained in pendulum-like forward and reverse rotation. At this time, materials smaller than the screening gap 207 gradually fall from the screening gap 207. If there are still larger materials, the rolling part 206 of the drum 201 is continuously rotated to the bottom and maintained in pendulum-like forward and reverse rotation until all materials fall from the screening gap 207 into the vibration grinding assembly 3. At this time, by rotating the deflection baffle 402, the flame spraying direction of the burner 401 is deflected from the drum 201 direction to the vibration grinding assembly 3 direction, that is, the flame is sprayed from obliquely above to obliquely below.

[0067] The first sprocket drive mechanism includes a first driving sprocket 702, a first rotating sprocket 703 and a first chain 704. The first driving sprocket 702 is installed on the rotating shaft of the servo motor 701, and the first rotating sprocket 703 is installed on the rotating shaft 203 of the rotating drum 201. The first driving sprocket 702 and the first rotating sprocket 703 are driven by the first chain 704. The first driving sprocket 702 and the first rotating sprocket 703 are arranged in the interlayer of the rotating drum silo 101 of the furnace body 1.

[0068] like Figure 4 , Figure 6 , Figure 8As shown, the vibration grinding assembly 3 includes a hopper 301 fixed in the combustion chamber 102 and a spherical container 302 arranged in the middle of the hopper 301 and concave. The hopper 301 and the spherical container 302 are made of ceramic material. A plurality of first grinding balls 303 are placed in the spherical container 302. A circular grinding channel 304 is arranged at the bottom of the spherical container 302. A second grinding ball 305 for grinding the output material into powder is installed in the grinding channel 304. The first grinding ball 303 and the second grinding ball 305 are ceramic balls. The diameter of the first grinding ball 303 is 2-5mm, and the diameter of the second grinding ball 305 is 30-50mm. The gap between the second grinding ball 305 and the grinding channel 304 is wide at the top and narrow at the bottom. The width at the top is convenient for feeding, and the narrowest part at the bottom is 50-200μm.

[0069] When the material falls on the hopper 301 and the spherical container 302, the flame of the burner 401 is sprayed and burned directly towards the spherical container 302. Under the vibration of the vibrating chassis 6, the material particles are concentrated in the spherical container 302 and are fully contacted and ground with the first grinding ball 303 to form smaller powders, which gradually sink to the bottom of the spherical container 302.

[0070] The second grinding ball 305 is fixed to a driving shaft 306 rotatably mounted on the furnace body 1. The driving shaft 306 is rotatably mounted on the furnace body 1 through a packing seal. The driving shaft 306 is driven to rotate by an external power mechanism, thereby driving the second grinding ball 305 to rotate slowly, and can rotate forward for a period of time and then reverse for a period of time. The powder that settles to the bottom is ground and discharged, and finally solid ash is generated and falls into the pull-out ash storage box 104.

[0071] The material feeding structure composed of the second grinding ball 305 and the grinding channel 304 has at least the following four functions:

[0072] (1) By utilizing the friction between the second grinding ball 305 and the grinding channel 304, the powder can be finally ground into finer ash, which can be burned more completely and sterilized more thoroughly;

[0073] (2) The continuously rotating second grinding balls 305 can also prevent the grinding channel 304 from being blocked. Compared with the existing incinerators which require frequent cleaning of the ash outlet, the incinerator is not prone to blockage.

[0074] (3) When the second grinding ball 305 rotates, the top of the second grinding ball 305 rubs against the first grinding ball 303 in contact, which not only improves the grinding effect, but also helps to stir the bottom powder, making the grinding more efficient;

[0075] (4) When incinerating medical waste with needles, the metal needles are blocked by the second grinding balls 305 and will not enter the circular grinding channel 304, thereby achieving the purpose of separating the metal needles and facilitating their recovery through the extraction holes 110 provided on the side of the combustion chamber 102 of the furnace body 1 (e.g. Figure 4 ).

[0076] like Figure 3 , Figure 9-12 As shown, the negative pressure adsorption device 5 is connected to the furnace body 1, and the negative pressure adsorption device 5 sucks the inside of the furnace body 1 to maintain the inside of the furnace body 1 in a negative pressure state. The air inlet end of the negative pressure adsorption device 5 is installed with a pre-smoke disinfection mechanism 8 for disinfecting the extracted exhaust gas.

[0077] In some embodiments, the front smoke disinfection mechanism 8 includes a smoke collection hood 801, a spiral tube 802, and a connecting pipe 803. The smoke collection hood 801 is arranged on the top of the rotary silo 101. The smoke collection hood 801 is connected to the spiral tube 802 arranged between the nozzle of the burner 401 and the deflection baffle 402 through the connecting pipe 803. The other end of the spiral tube 802 is connected to the negative pressure adsorption device 5 through the connecting pipe 803. The smoke collection hood 801, the spiral tube 802, and the connecting pipe 803 are all made of ceramic material.

[0078] The temperature of the high-temperature flame sprayed by the burner 401 is controlled at about 1100°C, and when the furnace body 1 is at the maximum negative pressure, the time for the airflow to pass through the spiral tube 802 is greater than 2s, which can fully sterilize the flue gas passing through the spiral tube 802 at high temperature and fully decompose dioxins before the gas is discharged from the furnace body 1.

[0079] In some embodiments, the negative pressure adsorption device 5 comprises:

[0080] A negative pressure fan 501 is connected to the furnace body 1 and sucks the inside of the furnace body 1 to maintain the furnace body 1 in a negative pressure state;

[0081] The cyclone separator 502 is connected between the negative pressure fan 501 and the furnace body 1, and is used for gas-solid separation of the flue gas. The air inlet end of the cyclone separator 502 is connected to the front flue gas disinfection mechanism 8 arranged in the furnace body 1;

[0082] The absorption tank 503 is connected between the cyclone separator 502 and the negative pressure fan 501, and is used for adsorbing and filtering the flue gas after gas-solid separation.

[0083] In some embodiments, the absorption tank 503 is a sealed tank body, an air inlet end is arranged at the bottom of the absorption tank 503, an exhaust end is arranged at the top of the absorption tank 503, and a circulating water cooling pipe 504 and a filtering adsorption layer 505 are arranged in sequence from bottom to top, wherein a steel wire mesh layer 506 is welded on the outer surface of the circulating water cooling pipe 504.

[0084] The cooling water in the cooling water pool is pumped into the circulating water cooling pipe 504 by a water pump and flows back to the cooling water pool to circulate and cool the passing gas. The steel wire mesh layer 506 is conducive to the gas to fully release heat and reduce the gas temperature to below 70°C. The filter adsorption layer 505 uses an activated carbon adsorption filter layer, which can adsorb toxic and harmful substances in the exhaust gas and meet the emission standards.

[0085] like Figure 4 As shown, in some embodiments, a sealed air mixing chamber 105 is further provided in the furnace body 1, the air outlet end of the front flue gas disinfection mechanism 8 is connected to the bottom of the air mixing chamber 105, the upper part of the air mixing chamber 105 is connected to the air inlet end of the cyclone separator 502, and a mixing air pipe 106 is sealed and inserted into the top of the air mixing chamber 105. A one-way valve 107 that only allows gas to flow in is provided at the top of the mixing air pipe 106. An adjustable air inlet valve 108 is provided at the air inlet end of the one-way valve 107. The adjustable air inlet valve 108 is connected to a cold air supply pipe, and a series of air inlet holes 109 are opened on the wall of the mixing air pipe 106 located in the air mixing chamber 105.

[0086] In order to prevent the generation of dioxins, the temperature of the gas flowing out of the outlet end of the pre-smoke disinfection mechanism 8 is maintained at above 600°C, and the refrigerant gas is connected to the air mixing chamber 105 through the adjustable air inlet valve 108. The refrigerant gas can be liquid nitrogen evaporated gas, which can rapidly cool the outflowing high-temperature gas, and quickly cool the high-temperature gas from 600°C to below 200°C to prevent the regeneration of dioxins. Among them, the adjustable air inlet valve 108 can adjust the mixing ratio of the refrigerant gas and the hot air to achieve the purpose of rapid cooling.

[0087] The cooperation between the pre-smoke disinfection mechanism 8 and the air mixing chamber 105 can not only fully sterilize and disinfect by high temperature, but also rapidly cool down the generation of harmful dioxins, which also creates a better temperature condition for subsequent cooling and adsorption, and is conducive to improving the adsorption effect of the activated carbon in the filtration adsorption layer 505.

[0088] like Figure 13-Figure 15 As shown, in some embodiments, the outer circumferential side of the rotating drum 201 is provided with equally spaced teeth 209, and a cleaning gear roller 210 meshing with the teeth 209 of the rotating drum 201 is installed in the furnace body 1. The screening gap 207 of the screening part 205 is formed by digging the teeth 209 outward at the inner circumference of the rotating drum 201. When the cleaning gear roller 210 rolls to the screening part 205, the material blocked in the screening gap 207 is pressed into the interior of the rotating drum 201, and the outer end of the cleaning gear roller 210 drives the second grinding ball 305 to rotate through the second sprocket drive mechanism.

[0089] like Figure 8 , Fig.16As shown, without adding more power mechanisms, the power of the original rotating drum 201 is used to drive the cleaning gear roller 210 to rotate, and the cleaning gear roller 210 is rotatably installed on the furnace body 1 through a packing sealing structure. The second sprocket drive mechanism includes a second driving sprocket 211, a second transmission sprocket 212, and a second chain 213. The second driving sprocket 211 is fixed to the outer end of the cleaning gear roller 210, and the second transmission sprocket 212 is fixed to the same side of the driving shaft 306 fixed with the central axis of the second grinding ball 305. The second driving sprocket 211 and the second transmission sprocket 212 are connected and driven by the second chain 213.

[0090] The cleaning gear roller 210 has at least the following two functions: (1) the cleaning gear roller 210 is driven by the power of the drum 201 so that the cleaning gear roller 210 can be inserted into the screening gap 207 and clean the screening gap 207 to prevent the screening gap 207 from being blocked; (2) the cleaning gear roller 210 itself drives the second grinding ball 305 to rotate through the second driving sprocket 211 and the second transmission sprocket 212, thereby achieving grinding of the material without the need for an additional power source.

[0091] This structure adopts a single power source, namely the electric servo drive mechanism 7, to provide power for the rolling of the drum 201, the rolling of the cleaning gear roller 210, and the rotation of the second grinding ball 305. This saves costs and optimizes the driving structure of the incinerator.

[0092] The incineration process of small animal carcasses and bones requires a high temperature of 800-1100°C to completely transform into ashes, which can be divided into the following stages:

[0093] (1) Initial combustion stage (400-900°C): burner 401 indirectly burns the material in rotating incineration assembly 2.

[0094] In the initial stage, materials are put in, the burner 401 is started, and then the negative pressure adsorption device 5 is started to maintain the negative pressure in the furnace body 1 between -10Pa and -50Pa. The deflection baffle 402 directs the flame sprayed by the burner 401 to the drum 201 for heating, and the flame temperature is controlled at 1000-1100°C. The temperature in the drum 201 is at least 400-900°C. In this stage, the fat, muscle and soft tissue in the carcass of small animals are mainly burned in the drum 201, releasing carbon dioxide and water. Gradually, the inorganic components (such as calcium phosphate) in the bones begin to carbonize, and the collagen is further decomposed. The bones gradually become brittle and break into blocks. At this time, the ash is not in the form of powder, but block fragments. It is crushed by the crushing ball 208 to form particles that can pass through the screening gap 207 and fall into the vibration grinding component 3.

[0095] (2) Complete incineration stage (900-1100°C), the burner 401 directly incinerates the materials in the vibration grinding assembly 3.

[0096] The deflection baffle 402 directs the flame sprayed by the burner 401 toward the spherical container 302. The flame of the burner 401 is sprayed directly onto the particles and the first grinding ball 303. The combustion chamber 102 can reach 900-1100°C. Under the action of the vibration chassis 6, the first grinding ball 303 can not only play the role of grinding, but also play the role of heat storage and incineration. At this time, the remaining small bone particles will be further oxidized and collided, rubbed, and ground by the first grinding ball 303. In addition to providing power to the first grinding ball 303, the vibration chassis 6 can also gather the materials in the spherical container 302 by vibration, and finally grind into ash through the cooperation of the second grinding ball 305 and the grinding channel 304.

[0097] (3) Negative pressure flue gas treatment. During the above incineration process, the carcasses of small animals are completely burned to form solid ash, which falls into the pull-out ash storage box 104. A small amount of flue gas is extracted by the negative pressure adsorption device 5, and then disinfected by the pre-flue gas disinfection mechanism 8, rapidly cooled in the air mixing chamber 105, and separated by the cyclone separator 502. Finally, secondary cooling is completed in the absorption tank 503, and finally, it passes through the activated carbon adsorption filter layer before meeting the emission standards.

[0098] In the above process, high temperature incineration can effectively kill bacteria and prevent the spread of pathogens, and the main components of the generated ashes are minerals (calcium phosphate, calcium carbonate, etc.), which are harmless to the human body. The generated flue gas is purified by the negative pressure adsorption device 5 and then discharged in compliance with the standards.

[0099] The rotating drum 201 and the burner 401 are used to burn the frozen and crushed corpses of small experimental animals in the hospital. The electric servo drive mechanism 7 is used to control the material to be in the crushing part 206, which can heat and burn the material in all directions without dead angles. After the material is burned, the carbonized layer on the surface will be crushed by the crushing ball 208. After the material is fully burned into smaller particles, the electric servo drive mechanism 7 controls the screening part 205 of the rotating drum 201 to rotate downward, and the material is discharged through the screening gap 207 and falls into the vibration grinding component 3 for secondary incineration; the flame of the burner 401 directly burns the material particles, and the vibrator 604 vibrates the small particle material into the spherical container 302 in the middle, which is further ground and burned by the first grinding ball 303 to become smaller ash, and then falls into the pull-out ash storage box 104 after being ground through the grinding channel 304. The rotating drum 201 has basically no burning dead angle, and the combustion is more complete, which reduces the risk of infection when handling ash.

[0100] This structure can also handle hospital discarded medical supplies, such as infusion needles, injection needles, blood collection needles and other disposable infusion supplies with sharp objects. The sharp objects are separated from the ashes on the surface of the double-layer microporous ceramic sieve and can be recycled and reused.

[0101] The use of the negative pressure adsorption device 5 with a sterilization structure can more thoroughly sterilize the flue gas extracted from the furnace body 1, so that the risk of infection of the flue gas extracted from the incinerator is basically eliminated even after the external negative pressure adsorption device 5 is saturated with adsorption.

[0102] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A small-scale harmless incinerator for experimental animal carcasses, characterized in that: include: A furnace body (1), wherein the furnace body (1) is integrally formed by an upper rotary silo (101) and a lower combustion silo (102), and the furnace body (1) is mounted on a vibrating chassis (6); A rotary incineration assembly (2), the rotary incineration assembly (2) comprising a rotary drum (201) rotatably mounted in a rotary drum silo (101), and an electric servo drive mechanism (7) for driving the rotary drum (201) to rotate, the circumferential side surface of the rotary drum (201) being divided into a screening portion (205) and a rolling portion (206), the screening portion (205) of the rotary drum (201) being provided with a screening gap (207), and a plurality of rolling balls (208) having a diameter greater than the width of the screening gap (207) being placed inside the rotary drum (201); A vibration grinding assembly (3), the vibration grinding assembly (3) comprising a hopper (301) fixed in a combustion chamber (102) and a spherical container (302) arranged in the middle of the hopper (301), a plurality of first grinding balls (303) being placed in the spherical container (302), a circular grinding channel (304) being arranged at the bottom of the spherical container (302), and a second grinding ball (305) for grinding the output material into powder being installed in the grinding channel (304); A burner assembly (4), the burner assembly (4) comprising a burner (401) installed in a combustion chamber (102), and a deflection baffle (402) rotatably installed in front of a nozzle of the burner (401) for changing a flame spraying direction; A negative pressure adsorption device (5) is connected to the furnace body (1), the negative pressure adsorption device (5) sucks the interior of the furnace body (1) to maintain the interior of the furnace body (1) in a negative pressure state, and a pre-smoke disinfection mechanism (8) for disinfecting the extracted exhaust gas is installed at the air inlet end of the negative pressure adsorption device (5).

2. According to claim 1, a small-scale harmless incinerator for experimental animal carcasses, characterized in that: The front smoke disinfection mechanism (8) comprises a smoke collection hood (801), a spiral tube (802), and a connecting pipe (803); the smoke collection hood (801) is arranged on the top of the rotary silo (101); the smoke collection hood (801) is connected to the spiral tube (802) arranged between the nozzle of the burner (401) and the deflection baffle (402) through the connecting pipe (803); the other end of the spiral tube (802) is connected to the negative pressure adsorption device (5) through the connecting pipe (803).

3. According to claim 1, a small-scale harmless incinerator for experimental animal carcasses, characterized in that: The negative pressure adsorption device (5) comprises: A negative pressure fan (501) is connected to the furnace body (1) and sucks the interior of the furnace body (1) to maintain a negative pressure state of the furnace body (1); A cyclone separator (502) is connected between the negative pressure fan (501) and the furnace body (1) and is used for performing gas-solid separation on the flue gas. The air inlet end of the cyclone separator (502) is connected to a pre-flue gas disinfection mechanism (8) arranged in the furnace body (1); The absorption tank (503) is connected between the cyclone separator (502) and the negative pressure fan (501) and is used for adsorption and filtration of the flue gas after gas-solid separation.

4. A small-scale harmless incinerator for experimental animal carcasses according to claim 3, characterized in that: The absorption tank (503) is a sealed tank body, an air inlet end is arranged at the bottom of the absorption tank (503), an exhaust end is arranged at the top of the absorption tank (503), and a circulating water cooling pipe (504) and a filtering adsorption layer (505) are arranged in sequence from bottom to top, wherein a steel wire mesh layer (506) is welded on the outer surface of the circulating water cooling pipe (504).

5. According to claim 3, a small-scale harmless incinerator for experimental animal carcasses is characterized in that: The furnace body (1) is further provided with a sealed air mixing chamber (105), the air outlet end of the front smoke disinfection mechanism (8) is connected to the bottom of the air mixing chamber (105), the upper part of the air mixing chamber (105) is connected to the air inlet end of the cyclone separator (502), a mixing air pipe (106) is sealed and inserted into the top of the air mixing chamber (105), a one-way valve (107) that only allows gas to flow in is provided at the top of the mixing air pipe (106), an adjustable air inlet valve (108) is provided at the air inlet end of the one-way valve (107), and the adjustable air inlet valve (108) is connected to a cold air supply pipe, and a series of air inlet holes (109) are opened on the wall of the mixing air pipe (106) located in the air mixing chamber (105).

6. The small-scale harmless incinerator for experimental animal carcasses according to claim 1 is characterized in that: The electric servo drive mechanism (7) comprises a servo motor (701) whose rotation angle is precisely controlled by a controller. The servo motor (701) is installed outside the furnace body (1) and drives the rotating shaft (203) of the rotating drum (201) to rotate through a first sprocket drive mechanism. When the servo motor (701) rotates the rolling part (206) of the rotating drum (201) to the lower part and maintains the pendulum-like forward and reverse rotation, the burner (401) rotates the rolling part (206) of the rotating drum (201) to the lower part. 206) is heated to carbonize the material, and the rolling balls (208) roll and grind the carbonized material. At this time, the vibrating chassis (6) can concentrate the crushed material to the bottom of the rolling part (206), and the rolling balls (208) are repeatedly rolled. When the servo motor (701) rotates the screening part (205) of the rotating drum (201) to the bottom and maintains the pendulum-like forward and reverse rotation, the material smaller than the screening gap (207) gradually falls from the screening gap (207).

7. A small-scale harmless incinerator for experimental animal carcasses according to claim 6, characterized in that: The first sprocket drive mechanism comprises a first driving sprocket (702), a first rotating sprocket (703) and a first chain (704); the first driving sprocket (702) is mounted on the rotating shaft of the servo motor (701); the first rotating sprocket (703) is mounted on the rotating shaft (203) of the rotating drum (201); the first driving sprocket (702) and the first rotating sprocket (703) are driven by the first chain (704).

8. The small-scale harmless incinerator for experimental animal carcasses according to claim 1 is characterized in that: The vibration chassis (6) comprises a base (601), a vibration seat (603) mounted above the base (601) via a plurality of elastic members (602), and a vibrator (604) mounted on the vibration seat (603); a furnace body (1) is fixed on the vibration seat (603).

9. The small-scale harmless incinerator for experimental animal carcasses according to claim 1, characterized in that: The outer circumferential side surface of the rotating drum (201) is provided with tooth grooves (209) at equal intervals. A cleaning gear roller (210) meshing with the tooth grooves (209) of the rotating drum (201) is installed in the furnace body (1). The screening gap (207) of the screening part (205) is formed by digging the tooth grooves (209) outward at the inner circumference of the rotating drum (201). When the cleaning gear roller (210) rolls to the screening part (205), the material blocked in the screening gap (207) is pressed into the interior of the rotating drum (201). The outer end of the cleaning gear roller (210) drives the second grinding ball (305) to rotate through a second sprocket drive mechanism.

10. The small-scale harmless incinerator for experimental animal carcasses according to claim 1, characterized in that: A pull-out ash storage box (104) is provided at the bottom of the combustion chamber (102).

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