A harmless treatment device for human tissue waste

Abstract

The present invention discloses a harmless treatment device for human tissue waste, belonging to the technical field of harmless treatment of medical waste. It includes an incinerator, and the incinerator includes a furnace body with an opening provided at the top; an incineration and grinding assembly, the incineration and grinding assembly includes a lower grinding disc rotatably installed at the bottom of the furnace body, and an upper ceramic grinding disc installed at the upper part of the furnace body through a plurality of suspension rods; a thermal cycle crushing assembly, the thermal cycle crushing assembly includes a conical crushing cylinder with a small bottom end fixed to a frustum-shaped hole, a crushing motor hermetically fixed to the top of the cover body, a crushing blade fixed to the bottom end of the rotating shaft of the crushing motor, and a thermal cycle fan blade fixed to the upper part of the rotating shaft of the crushing motor. This device can locally harmlessly treat a small amount of human tissue waste. First, the larger-particle human tissue waste is crushed by the crushing motor and the crushing blade, and then incinerated and ground by the incineration and grinding assembly, finally forming harmless ash residues.

Description

Technical Field

[0001] The present invention relates to a harmless treatment device for human tissue waste, belonging to the technical field of harmless treatment of medical waste. Background Art

[0002] Medical institutions often generate human tissue waste during surgical operations, pathological examinations, autopsy, and medical research. These wastes include excised organs, tissue specimens, pathological samples, etc., and may contain various pathogenic microorganisms, such as bacteria, viruses, fungi, etc. Especially during the treatment of surgical excisions from infectious disease patients, the waste may become the source of pathogen transmission. Therefore, the disposal of human tissue waste needs to be very cautious to avoid significant risks to public health and the environment. Currently, the treatment of human tissue waste mainly relies on technical means such as high-temperature incineration and steam disinfection and sterilization. Among them, high-temperature incineration is the most common treatment method. By completely incinerating at a high temperature of 800 - 1200 °C, it can effectively eliminate the pathogenic microorganisms and harmful substances therein.

[0003] However, for a small amount of human tissue waste (such as human tissues like warts, tumors, blood clots, tissue samples, etc.), transporting it to a medical waste treatment center or incineration plant for incineration treatment has the problems of high cost and high risk. On the one hand, the transportation cost may even be higher than the incineration treatment cost; on the other hand, considering that there may be loopholes or human errors in the transportation, disposal and other links, it increases the pollution and transmission risks.

[0004] For a small amount of human tissue waste generated during surgical operations and pathological examinations, some hospitals or medical institutions currently mainly use high-temperature steam sterilizers for local treatment. It is applicable to most pathological wastes, especially non-high-risk tissue samples. However, when using a high-temperature steam sterilizer to treat human tissue waste, since the treatment temperature is below 150 °C, there may be some infectious organisms that cannot be completely killed, especially pathogens with strong heat resistance. The conventional high-temperature steam sterilization process may not be able to completely remove their infectivity.

[0005] Therefore, a small harmless treatment device for human tissue waste for local use in hospitals is designed. It can preliminarily cut up the frozen human tissue waste, heat and incinerate it, and at the same time carry out rolling and crushing to generate harmless solid ash residues. The waste gas generated during this process is absorbed by the waste gas treatment device and discharged harmlessly. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a harmless treatment device for human tissue waste, which solves the problem of the lack of local small treatment devices for the harmless treatment of a small amount of human tissue waste at present.

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

[0008] A harmless treatment device for human tissue waste, which comprises:

[0009] An incinerator, the incinerator comprising a furnace body with an opening at the top, and a cover for closing the opening of the furnace body;

[0010] An incineration and grinding assembly, the incineration and grinding assembly comprising a lower grinding disc rotatably mounted at the bottom of the furnace body, a grinding drive mechanism for driving the lower grinding disc to rotate, an electric heating device for heating the lower grinding disc, and an upper ceramic grinding disc mounted on the upper part of the furnace body by a plurality of suspension rods. The lower grinding disc comprises a metal grinding base and a lower ceramic grinding sheet fixed on the upper surface of the metal grinding base. The upper ceramic grinding disc is in close contact with the lower ceramic grinding sheet, and a through frustum-shaped hole with a smaller upper part and a larger lower part is provided in the middle of the upper ceramic grinding disc;

[0011] A thermal cycle and crushing assembly, the thermal cycle and crushing assembly comprising a conical crushing cylinder with a small bottom end fixed to the frustum-shaped hole, a crushing motor hermetically fixed to the top of the cover, a crushing blade fixed to the bottom end of the rotating shaft of the crushing motor, and a thermal cycle fan blade fixed to the upper part of the rotating shaft of the crushing motor. A plurality of circulating air holes are evenly formed in the circumference of the upper part of the crushing cylinder. When the cover closes the opening at the top of the furnace body, the rotating shaft of the crushing motor passes through the cover downward and extends to the bottom of the crushing cylinder. At this time, the crushing blade is located in the frustum-shaped hole, and the thermal cycle fan blade is located below the circulating air holes.

[0012] Preferably, the grinding drive mechanism consists of a drive housing, a connecting shaft, a grinding gear disc, a grinding motor, and a drive gear. The drive housing is fixed below the furnace body. The upper end of the connecting shaft is fixed at the midline of the bottom of the metal grinding base. The lower end of the connecting shaft passes through the furnace body and extends into the drive housing. The connecting shaft is movably installed between the top and the bottom of the drive housing through ceramic bearings respectively. The grinding gear disc is located in the drive housing and fixed to the connecting shaft. The grinding motor is fixed to the drive housing, and a drive gear is fixed on the rotating shaft of the grinding motor. The metal grinding base is driven to rotate by the meshing of the drive gear and the grinding gear disc.

[0013] Preferably, a convex disc part is provided in the middle of the metal grinding base, and an annular groove for storing discharged materials is formed in the metal grinding base around the convex disc part. The lower ceramic grinding sheet is installed on the top of the convex disc part.

[0014] Preferably, a negative pressure suction assembly is also fixed on one side of the incinerator. The negative pressure suction assembly includes an ash hopper, a discharge storage chamber, and an adsorption cylinder. A suction pipe is hermetically connected to the side of the ash hopper, and the lower end of the suction pipe extends to the bottom of the annular groove. The bottom of the ash hopper is hermetically connected to the discharge storage chamber, and the top of the ash hopper is connected to the adsorption cylinder. The adsorption cylinder is sequentially provided with a water cooling chamber, an adsorption chamber, a fan chamber, and an exhaust chamber from bottom to top. The water cooling chamber includes two upper and lower partitions hermetically fixed on the inner wall of the adsorption cylinder. A closed water cavity is formed between the two partitions. The upper and lower end faces of the two partitions are communicated by a plurality of heat dissipation air pipes. The upper and lower parts of the closed water cavity are respectively provided with circulating water joints connected to the cooling water circulation pipeline. An activated carbon filter cover is provided at the top of the adsorption chamber, and a suction air duct communicating with the fan chamber is arranged in the activated carbon filter cover. A suction fan for sucking the air flow in the suction air duct and blowing it towards the exhaust chamber is arranged in the fan chamber. A ventilation opening is provided at the top of the exhaust chamber, and an activated carbon filter screen for filtering the air flow is arranged between the air outlet of the fan chamber and the ventilation opening of the exhaust chamber.

[0015] Preferably, the lower end of the suction pipe is provided with a scraper matching the cross-section of the annular groove, and a gap of 1-3 mm is reserved between the scraper and the annular groove.

[0016] Preferably, the suspension rod includes a telescopic rod, a limit retaining piece, and a sleeve. The sleeve is fixed on the upper part of the furnace body through a support member. The bottom of the telescopic rod is connected to the upper surface of the upper ceramic grinding disc. The upper end of the telescopic rod passes through the sleeve and is limited by the limit retaining piece. Grinding is achieved by relying on the gravity of the upper ceramic grinding disc. A spring for providing a downward pressure can also be sleeved on the telescopic rod between the sleeve and the upper ceramic grinding disc to further increase the grinding pressure.

[0017] Preferably, the lower ceramic grinding disc is composed of a circular grinding disc, a plurality of convex platforms arranged at the bottom of the circular grinding disc, and a central axis arranged on the center line at the bottom of the circular grinding disc. The convex disc part of the metal grinding seat is provided with grooves and connecting holes corresponding to the convex platforms and the connecting shaft respectively. A hexagonal hole is provided below the connecting hole. The upper end of the connecting shaft adopts a hexagonal connecting head matching the hexagonal hole. The lower ceramic grinding disc is placed on the convex disc part of the metal grinding seat. At this time, the convex platforms are matched with the grooves, and the central axis is inserted into the connecting hole. Expansion and contraction joints for preventing thermal expansion and contraction are reserved between the convex platforms and the grooves, and between the central axis and the connecting hole.

[0018] Preferably, the electric heating device adopts an electromagnetic heating coil. The electromagnetic heating coil is fixed at the bottom of the furnace body and sleeved outside the circumference of the metal grinding seat without contacting the ground. The electromagnetic heating coil is externally connected to a high-frequency current to heat the upper surface of the metal grinding seat to above 600 °C.

[0019] Preferably, the scraper is a scraper or a metal brush.

[0020] Preferably, a one-way intake valve for introducing gas into the furnace body is arranged on the cover body.

[0021] The beneficial effects of the present invention are as follows: This device can locally harmlessly treat a small amount of human tissue waste. First, the crushing motor and crushing blades are used to crush the human tissue waste with larger particles, and then the incineration and grinding assembly is used for incineration and grinding, finally forming harmless ash residues. Existing local treatments generally use high-temperature steam sterilizers with a temperature below 150°C, and there is a risk that disinfection and sterilization are not sufficient. This device uses an electromagnetic heating coil to heat the metal grinding base, which can quickly rise to a higher temperature. The crushed human tissue waste enters between the upper ceramic grinding disc and the lower ceramic grinding plate, repeating the incineration-grinding-incineration process, and the disinfection and sterilization are more thorough. A thermal circulation fan blade is added in the crushing cylinder, which can suck the high temperature at the bottom of the incinerator into the crushing cylinder, blow towards the conical hole after passing through the crushing cylinder, supplement oxygen to the gap between the conical hole and the upper ceramic grinding disc and the lower ceramic grinding plate, accelerate incineration, and at the same time, the inner part of the incinerator can also be disinfected and sterilized through the flow of high-temperature gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic external structure diagram of the present invention;

[0023] Figure 2 is a schematic front structure diagram of the present invention;

[0024] Figure 3 is a schematic diagram of the separated structure of the cover body and the furnace body of the present invention;

[0025] Figure 4 is a schematic diagram of the structure after the cover body and the furnace body of the present invention are fixed;

[0026] Figure 5 is a schematic structure diagram of the lower grinding disc of the present invention;

[0027] Figure 6 is a three-dimensional structure diagram of the lower grinding disc of the present invention;

[0028] Figure 7 is a schematic internal structure diagram of the negative pressure suction assembly of the present invention.

[0029] In the figure:

[0030] 1. Incinerator; 11. Furnace body; 12. Cover body;

[0031] 2. Incineration and grinding assembly; 21. Lower grinding disc; 2101. Metal grinding base; 2102. Lower ceramic grinding disc; 2103. Convex disc part; 2104. Annular groove; 2105. Circular grinding disc; 2106. Boss; 2107. Central axis; 2108. Groove; 2109. Connecting hole; 2110. Hexagonal hole; 22. Grinding drive mechanism; 221. Drive housing; 222. Connecting shaft; 223. Grinding tooth disc; 224. Grinding motor; 225. Drive tooth; 226. Ceramic bearing; 23. Electric heating device; 24. Suspension rod; 241. Telescopic rod; 242. Spring; 243. Limit stop; 244. Sleeve; 245. Support; 25. Upper ceramic grinding disc; 251. Round table hole;

[0032] 3. Thermal cycle crushing assembly; 31. Crushing cylinder; 311. Circulating air flow hole; 32. Crushing motor; 33. Crushing blade; 34. Thermal cycle fan blade;

[0033] 4. Negative pressure suction assembly; 41. Ash hopper; 42. Discharge storage chamber; 43. Adsorption cylinder; 4301. Water cooling chamber; 4302. Adsorption chamber; 4303. Fan chamber; 4304. Exhaust chamber; 4305. Partition board; 4306. Metal filter screen; 4307. Heat dissipation air pipe; 4308. Activated carbon filter cover; 4309. Suction air duct; 4310. Suction fan; 4311. Exhaust port; 4312. Activated carbon filter screen; 44. Suction pipe;

[0034] 5. One-way intake valve. Detailed implementation manners

[0035] For the technical means, creative features, achieved purposes and effects of the present invention to be easily understood, the present invention will be further described below with reference to specific illustrations.

[0036] As used herein, "upper" and "lower" respectively refer to the upper and lower parts of the device in its normal working state, such as Figure 2 when placed on the ground as shown, above and below the device.

[0037] As shown in Figure 1 and Figure 2 shown, the device is used for local harmless treatment of a small amount of human tissue waste generated in the hospital, and it includes an incinerator 1, an incineration and grinding assembly 2, and a thermal cycle crushing assembly 3.

[0038] As shown in Figure 3 shown, the incinerator 1 includes a furnace body 11 with an opening at the top, and a cover body 12 for closing the opening of the furnace body 11. The opening of the furnace body 11 is fixed to the cover body 12 by screwing. The furnace body 11 and the cover body 12 use incineration silicon casting material resistant to temperatures above 1200°C as the inner core working layer material, and use aluminum silicate fiber module and aerogel composite heat insulation board as the outer layer heat insulation layer material.

[0039] As Figures 3 - 6 shown, in some embodiments, the incineration and grinding assembly 2 includes a lower grinding disc 21 rotatably mounted at the bottom of the furnace body 11, a grinding drive mechanism 22 for driving the rotation of the lower grinding disc 21, and an electric heating device 23 for heating the lower grinding disc 21. The metal grinding base 2101 is made of a commonly used high-temperature resistant metal material in the art. For example, the model is Incoloy 800H (austenitic heat-resistant alloy), which can remain stable in a high-temperature environment of 600 - 1100 °C, and at the same time has good oxidation and corrosion resistance. Other metal materials in the art that can withstand high temperatures above 800 °C and can be electromagnetically heated can also be used. The electric heating device 23 uses an electromagnetic heating coil, which is fixed at the bottom of the furnace body 11 and sleeved outside the circumference of the metal grinding base 2101 without contact. The electromagnetic heating coil is externally connected to a high-frequency current to heat the upper surface of the metal grinding base 2101 to above 600 °C, preferably 600 - 800 °C. The temperature of the lower grinding disc 21 is detected by installing a first thermometer near the circumference of the metal grinding base 2101.

[0040] The electromagnetic heating coil using high-frequency alternating current generates eddy currents inside the metal, thereby heating the metal grinding base 2101. At this time, for the rotating metal grinding base 2101, the ordinary heating method requires placing a heating device inside the metal grinding base 2101, and both the circuit and the installation structure are relatively complex. However, the non-contact electromagnetic heating coil method adopted in this solution is used for heating. The metal grinding base 2101 does not need to be in contact with the electric heating device 23, and the rotation of the metal grinding base 2101 will not be blocked. It not only utilizes the characteristics of fast heating speed and high temperature of the electromagnetic heating coil, which can quickly transfer heat to the surface of the lower grinding disc 21, but also utilizes the heating characteristics of rotating metal objects, simplifying the structural design. This is an effect that cannot be achieved by ordinary heating methods.

[0041] As Figures 3 - 6 shown, in some embodiments, an upper ceramic grinding disc 25 is installed at the upper part of the furnace body 11 through a plurality of suspension rods 24. The lower grinding disc 21 includes a metal grinding base 2101 and a lower ceramic grinding sheet 2102 fixed on the upper surface of the metal grinding base 2101. The upper ceramic grinding disc 25 is in close contact with the lower ceramic grinding sheet 2102. The contact surfaces of the upper ceramic grinding disc 25 and the lower ceramic grinding sheet 2102 both adopt the commonly used inclined groove patterns in the art, which is beneficial to grinding and discharging the entering objects.

[0042] Adopt the method of closely contacting the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102 to incinerate and grind the human tissue waste that has been broken into small particles by the broken blade 33. Current incinerators are all large-scale equipment and are difficult to be arranged locally. Small incinerators have a relatively low temperature and it is difficult to incinerate or disinfect the inside of human tissue waste in a short time, which may lead to incomplete internal incineration and still pose a risk of transmission. This solution first breaks the waste, then grinds and incinerates it at high temperature simultaneously, and repeats the process of incineration-grinding-incineration, with advantages such as low temperature requirements (600-800 °C is required on the upper surface of the lower grinding disc 21, and 400-600 °C is required inside the upper furnace body 11), fast incineration speed, and thorough incineration. Specifically, after the human tissue waste particles are crushed by the broken blade 33, they are thrown into the periphery of the frustum-shaped hole 251. The frustum-shaped hole 251 with a small upper part and a large lower part forms a gradually narrowing inclined plane between the upper and lower contact surfaces of the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102. Under the action of rotational centrifugal force, the human tissue waste particles gradually enter between the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102. After being extruded and ground through the inclined groove patterns on their surfaces, the human tissue waste particles are quickly rolled into a layered shape, then incinerated at high temperature, and then continue to be rolled into a powdery shape. Finally, the ash residue after high-temperature combustion and grinding falls into the annular groove 2104 under the action of centrifugal force.

[0043] As Figures 3 - 6 shown, in some embodiments, the thermal cycle breaking assembly 3 includes a conical breaking cylinder 31 with the small bottom end fixed to the frustum-shaped hole 251. The inner wall of the breaking cylinder 31 is coated with a smooth ceramic coating to prevent the adhesion of human tissue waste. A breaking motor 32 is hermetically fixed to the top of the cover body 12. The breaking motor 32 is installed outside the cover body 12. The rotating shaft of the breaking motor 32 passes through the cover body 12 through a stuffing box dynamic sealing structure. A breaking blade 33 is fixed to the bottom end of the rotating shaft of the breaking motor 32, and a thermal cycle fan blade 34 is fixed to the upper part of the rotating shaft of the breaking motor 32. A plurality of circulating air holes 311 are evenly opened on the upper circumference of the breaking cylinder 31. When the cover body 12 closes the top opening of the furnace body 11, the rotating shaft of the breaking motor 32 extends downward through the cover body 12 and reaches the bottom of the breaking cylinder 31. At this time, the breaking blade 33 is located in the frustum-shaped hole 251, and the thermal cycle fan blade 34 is located below the circulating air holes 311. The breaking blade 33 is placed at the bottom of the frustum-shaped hole 251, and the outer diameter of the breaking blade 33 is slightly smaller than the inner diameter of the bottom of the frustum-shaped hole 251 (the outer diameter of the breaking blade 33 is 0.1-0.5 mm smaller than the inner diameter of the bottom of the frustum-shaped hole 251). In this way, the breaking blade 33 can completely crush the frozen human tissue waste and play a role in cleaning the frustum-shaped hole 251.

[0044] Before the harmless treatment, the frozen human tissue waste is placed in the conical crushing cylinder 31, and then the cover body 12 is closed. The crushing motor 32 is started, and the crushing blade 33 gradually breaks up the human tissue waste. The particulate matter of the broken human tissue waste enters between the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102 under the centrifugal action for grinding and high-temperature incineration.

[0045] Meanwhile, the hot circulation fan blade 34 blows the internal air flow of the furnace body 11 downward, blowing it into the gap between the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102, making the oxygen more sufficient and the high-temperature incineration faster. On the other hand, it circulates the internal high-temperature gas, pre-heats the human tissue waste that has not yet entered the gap with the high-temperature gas, can suck the high temperature at the bottom of the incinerator 1 into the crushing cylinder 31, and blows it towards the frustum hole 251 after passing through the crushing cylinder 31, supplementing oxygen to the gap between the frustum hole 251, the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102 to accelerate incineration. At the same time, it can also disinfect and sterilize the inside of the incinerator 1 through the flow of high-temperature gas.

[0046] The bottom of the crushing cylinder 31 is fixed to the frustum hole 251. When grinding between the upper ceramic grinding disc 25 and the lower ceramic grinding disc 2102, vibrations will occur, and the vibrations are transmitted to the crushing cylinder 31. The materials above are continuously fed to the bottom through the vibration of the crushing cylinder 31. With the dual effects of the vibration effect of the crushing cylinder 31 and the non-sticky ceramic coating, the materials are not prone to the problem of wall sticking.

[0047] As Figures 3 - 6 shown, in some embodiments, the grinding drive mechanism 22 is composed of a drive housing 221, a connecting shaft 222, a grinding gear disc 223, a grinding motor 224, and a drive gear 225. The drive housing 221 is fixed below the furnace body 11. The upper end of the connecting shaft 222 is fixed at the midline of the bottom of the metal grinding seat 2101. The lower end of the connecting shaft 222 passes through the furnace body 11 and extends into the drive housing 221. The connecting shaft 222 is movably installed between the top and bottom of the drive housing 221 through ceramic bearings 226 respectively. The grinding gear disc 223 is located in the drive housing 221 and is fixed to the connecting shaft 222. The grinding motor 224 is fixed to the drive housing 221, and a drive gear 225 is fixed on the rotating shaft of the grinding motor 224. The metal grinding seat 2101 is driven to rotate by the engagement of the drive gear 225 and the grinding gear disc 223.

[0048] The grinding motor 224, the drive gear 225, and the grinding gear disc 223 are arranged at the bottom of the furnace body 11 to amplify the decelerated motor torque and drive the lower grinding disc 21 to rotate, which can improve the grinding effect.

[0049] As Figures 3 - 6As shown, in some embodiments, a raised disc portion 2103 is provided in the middle of the metal grinding base 2101. An annular groove 2104 for storing discharged materials is formed on the metal grinding base 2101 around the raised disc portion 2103. A lower ceramic grinding disc 2102 is installed on the top of the raised disc portion 2103.

[0050] The powdery ash formed after incineration and grinding, if directly dropped inside the furnace body 11, will be difficult to clean, and continuous harmless treatment cannot be achieved. Therefore, the annular groove 2104 structure is adopted to collect the powdery ash for collection and cleaning in cooperation with the negative pressure suction assembly 4.

[0051] In the incinerator 1, the high-temperature incineration of human tissue waste not only produces incinerated solids but also toxic and harmful gases, and these gases cannot be directly discharged into the air. Therefore, during the harmless treatment process, a negative pressure environment needs to be formed inside the incinerator 1 to extract and adsorb harmful gases before discharging.

[0052] Current vacuum cleaners cannot withstand high-temperature gases when sucking ash. Therefore, in order to be able to suck and collect the ash after combustion and also cope with the toxic and harmful gases generated by the internal high temperature, a negative pressure suction assembly 4 that can cope needs to be designed.

[0053] As Figures 3 - 7 As shown, in some embodiments, a negative pressure suction assembly 4 is also fixed on one side of the incinerator 1. The negative pressure suction assembly 4 includes an ash hopper 41, a discharge storage chamber 42, and an adsorption cylinder 43. A suction pipe 44 is hermetically connected to the side of the ash hopper 41. The lower end of the suction pipe 44 extends to the bottom of the annular groove 2104. The bottom of the ash hopper 41 is hermetically connected to the discharge storage chamber 42, and the top of the ash hopper 41 is connected to the adsorption cylinder 43.

[0054] The inside of the incinerator 1 is subjected to negative pressure suction by the suction pipe 44. Under the action of negative pressure, the gaps that are not sealed during the installation of the incinerator 1 and other mechanisms will not emit toxic and harmful gases to the outside.

[0055] In addition, during the incineration process of the incinerator 1, the temperature of the internal mixed gas is very high and cannot be directly adsorbed by activated carbon. Therefore, a structure of cooling first and then adsorbing is designed.

[0056] As Figure 7 As shown, in some embodiments, the adsorption cylinder 43 is sequentially provided with a water cooling chamber 4301, an adsorption chamber 4302, a fan chamber 4303, and an exhaust chamber 4304 from bottom to top. The water cooling chamber 4301 includes two upper and lower partitions 4305 hermetically fixed on the inner wall of the adsorption cylinder 43. A closed water cavity is formed between the two partitions 4305. The upper and lower end faces of the two partitions 4305 are connected by a plurality of heat dissipation air pipes 4307. The heat dissipation air pipes 4307 are made of dense thin straight copper pipes ( Figure 7In the middle are dense thin straight copper tubes (increasing the heat exchange contact area), or bent thicker copper tubes (not shown in the figure, the bent copper tubes increase the heat exchange contact area and the flow-through time). Below this partition 4305 at the bottom, there is a metal filter screen 4306 to prevent large particles from entering the upper cooling chamber and adsorption chamber 4302. Circulation water connectors connected to the cooling water circulation pipeline are respectively provided at the upper and lower parts of the closed water chamber. After the refrigerant is introduced, it is required that the gas flowing out from the upper partition 4305 be cooled to below 60°C. The cooled exhaust gas is detected by installing a second thermometer below the activated carbon filter cover 4308. At the top of the adsorption chamber 4302, there is an activated carbon filter cover 4308. Inside the activated carbon filter cover 4308, there is a suction air duct 4309 communicating with the fan chamber 4303. In the fan chamber 4303, there is a suction fan 4310 that sucks the air flow in the suction air duct 4309 and blows it towards the exhaust chamber 4304. At the top of the exhaust chamber 4304, there is an exhaust port 4311. Between the air outlet of the fan chamber 4303 and the exhaust port 4311 of the exhaust chamber 4304, there is an activated carbon filter screen 4312 for filtering the air flow.

[0057] The water-cooling chamber 4301 is used to cool the internal high-temperature gas. The low-temperature toxic and harmful gas is easily adsorbed by the activated carbon filter screen 4312 and the activated carbon filter cover 4308, improving the adsorption effect.

[0058] The suction fan 4310 has two power levels:

[0059] (1) When the suction fan 4310 operates at the low power level, it can generate a negative pressure environment for preventing the overflow of toxic and harmful gases (the negative pressure value in the furnace body 11 usually remains between -10 Pa and -60 Pa).

[0060] (2) When the suction fan 4310 operates at the high power level, it can not only generate a higher negative pressure, but also suck the ash residue at the bottom of the annular groove 2104 into the ash hopper 41 through the suction pipe 44 and drop it into the feeding and discharging storage chamber 42. The suction pipe 44 enters the inside from the tangential direction of the ash hopper 41, forming a cyclone separation effect, which is beneficial to the separation of gas and solid. The solid falls in the discharging storage chamber 42, and the gas enters the adsorption cylinder 43 from above the ash hopper 41.

[0061] The lower end of the suction pipe 44 is provided with a scraping tool that matches the cross-section of the annular groove 2104. A gap of 1 - 3 mm is reserved between the scraping tool and the annular groove 2104, which can maintain a strong suction force and suck the incinerated and ground ash residue clean. The scraping tool is a scraper or a metal brush, which can clean the annular groove 2104.

[0062] Such as Figure 3As shown, in some embodiments, the suspension rod 24 includes a telescopic rod 241, a spring 242, a limit stop 243, and a sleeve 244. The sleeve 244 is fixed to the upper part of the furnace body 11 through a support 245. The support 245 is a steel plate with a hollow middle part fixed to the upper part of the furnace body 11. Holes are formed in the steel plate, which does not affect the upward circulation of the air flow below. The crushing cylinder 31 is located in the holes and is not fixed to the holes. When the crushing cylinder 31 vibrates up and down with the upper ceramic grinding disc 25, it is not blocked by the support 245. The bottom of the telescopic rod 241 is connected to the upper surface of the upper ceramic grinding disc 25. The upper end of the telescopic rod 241 passes through the sleeve 244 and is limited by the limit stop 243, and grinding is achieved by relying on the gravity of the upper ceramic grinding disc 25. A spring 242 that provides a downward pressure can also be sleeved on the telescopic rod 241 between the sleeve 244 and the upper ceramic grinding disc 25 to further increase the grinding pressure.

[0063] The spring 242 can provide a continuous downward pressure to the upper ceramic grinding disc 25 so as to grind and crush the particulate matter. The telescopic rod 241 and the sleeve 244 cooperate to provide a stable up and down movement space, but do not rotate relative to the furnace body 11. During disassembly and assembly, the limit stop 243 can prevent the upper ceramic grinding disc 25 from falling.

[0064] As Figures 5 - 6 As shown, in some embodiments, the lower ceramic grinding plate 2102 is composed of a circular grinding plate 2105, a plurality of bosses 2106 provided at the bottom of the circular grinding plate 2105, and a central axis 2107 provided on the center line at the bottom of the circular grinding plate 2105. The raised disc portion 2103 of the metal grinding base 2101 is provided with grooves 2108 and connection holes 2109 that respectively cooperate with the bosses 2106 and the connecting shaft 222. A hexagonal hole 2110 is provided below the connection hole 2109. The upper end of the connecting shaft 222 uses a hexagonal connector that cooperates with the hexagonal hole 2110. The lower ceramic grinding plate 2102 is placed on the raised disc portion 2103 of the metal grinding base 2101. At this time, the bosses 2106 cooperate with the grooves 2108, and the central axis 2107 is inserted into the connection hole 2109. Expansion and contraction gaps are reserved between the bosses 2106 and the grooves 2108, and between the central axis 2107 and the connection hole 2109 to prevent thermal expansion and contraction.

[0065] Due to the different coefficients of thermal expansion between ceramics and metals, if the two are fixed by means such as screwing, after the temperature changes, the lower ceramic grinding disc 2102 will crack. Therefore, the rotation is transmitted by the cooperation of the boss 2106 and the groove 2108, and the central axis 2107 is used as the center for positioning. After heating and expansion, the central axis 2107 is made of ceramic material and is always smaller than the expansion degree of the connecting hole 2109. Expansion and contraction gaps are reserved between the boss 2106 and the groove 2108, and between the central axis 2107 and the connecting hole 2109, which can further prevent the influence of thermal expansion and contraction on the ceramic material and prevent the ceramic from cracking. The expansion and contraction gap has little influence on the transmission between the slowly rotating metal grinding base 2101 and the lower ceramic grinding disc 2102 and does not affect the normal grinding operation.

[0066] As Figure 4 shown, in some embodiments, a one-way intake valve 5 for introducing gas into the furnace body 11 is provided on the cover body 12.

[0067] In order to continuously carry out incineration, oxygen can be introduced into the furnace body 11 through the one-way intake valve 5 to accelerate the combustion and carbonization process of human tissue waste, making the incineration and disinfection more thorough. Air or compressed air can also be introduced when sucking ash residues to ensure that there is sufficient suction at the nozzle of the suction pipe 44.

[0068] Control principle: Start the negative pressure suction assembly 4, control the suction fan 4310 to operate at a low power level. At this time, a negative pressure environment for preventing diffusion is formed in the furnace body 11; put the frozen human tissue waste into the crushing cylinder 31 of the incinerator 1, cover the cover body 12, and lock it tightly with screws; start the electric heating device 23 to preheat the lower grinding disc 21 to 600 - 800 °C (observe the reading of the first thermometer); start the crushing motor 32 and the grinding motor 224 for crushing and grinding; when all the waste has been incinerated and ground into powdery ash residues, control the suction fan 4310 to operate at a high power level, adsorb the ash residues into the ash hopper 41, and achieve gas-solid separation through cyclone separation. The solid powdery ash residues fall into the discharge storage chamber 42, the gas is cooled to below 60 °C (observe the reading of the second thermometer), and is first filtered by the activated carbon filter cover 4308, and then secondarily filtered by the activated carbon filter screen 4312, and finally discharged up to the standard. The activated carbon filter cover 4308 and the activated carbon filter screen 4312 need to be replaced in time after being saturated. The above process can be controlled manually or by electrically connecting the electronic components in this solution to a controller to form a control circuit to achieve automatic control.

[0069] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A human tissue waste harmless treatment device, characterized in that: It includes: An incinerator (1), the incinerator (1) comprising a furnace body (11) with an opening at the top, and a cover body (12) closing the opening of the furnace body (11); An incineration and grinding assembly (2), the incineration and grinding assembly (2) comprising a lower grinding disc (21) rotatably mounted at the bottom of a furnace body (11), a grinding drive mechanism (22) for driving the lower grinding disc (21) to rotate, an electric heating device (23) for heating the lower grinding disc (21), and an upper ceramic grinding disc (25) mounted on the upper part of the furnace body (11) via a plurality of suspension rods (24), the lower grinding disc (21) comprising a metal grinding seat (2101) and a lower ceramic grinding disc (2102) fixed on the upper surface of the metal grinding seat (2101), the upper ceramic grinding disc (25) being in close contact with the lower ceramic grinding disc (2102), and a truncated cone hole (251) which is smaller at the top and larger at the bottom is provided in the middle of the upper ceramic grinding disc (25); A thermal cycle crushing assembly (3) comprises a conical crushing cylinder (31) whose bottom small opening end is fixed to a truncated cone hole (251), a crushing motor (32) sealed and fixed to the top of a cover body (12), a crushing blade (33) fixed to the bottom end of the rotating shaft of the crushing motor (32), and a thermal cycle fan blade (34) fixed to the upper part of the rotating shaft of the crushing motor (32). A plurality of circulating air flow holes (311) are evenly opened on the upper circumference of the crushing cylinder (31). When the cover body (12) closes the top opening of the furnace body (11), the rotating shaft of the crushing motor (32) passes downward through the cover body (12) and extends to the bottom of the crushing cylinder (31). At this time, the crushing blade (33) is located in the truncated cone hole (251), and the thermal cycle fan blade (34) is located below the circulating air flow hole (311).

2. The human tissue waste harmless treatment equipment according to claim 1, characterized in that: The grinding drive mechanism (22) is composed of a driving housing (221), a connecting shaft (222), a grinding toothed disc (223), a grinding motor (224), and a driving tooth (225); the driving housing (221) is fixed below the furnace body (11); the upper end of the connecting shaft (222) is fixed to the center line of the bottom of the metal grinding seat (2101); the lower end of the connecting shaft (222) passes through the furnace body (11) and extends into the driving housing (221); the connecting shaft (222) is connected to the grinding motor (224) and the grinding motor (225) The top and bottom of the driving housing (221) are movably mounted via ceramic bearings (226), the grinding toothed disc (223) is located in the driving housing (221) and is fixed to the connecting shaft (222), the grinding motor (224) is fixed to the driving housing (221), and a driving tooth (225) is fixed on the rotating shaft of the grinding motor (224), and the driving tooth (225) is engaged with the grinding toothed disc (223) to drive the metal grinding seat (2101) to rotate.

3. The human tissue waste harmless treatment equipment according to claim 1, characterized in that: A raised disc portion (2103) is provided in the middle of the metal grinding seat (2101), and a circle of annular grooves (2104) for storing discharged materials are provided on the metal grinding seat (2101) around the raised disc portion (2103), and a ceramic grinding disc (2102) is installed on the top of the raised disc portion (2103).

4. The human tissue waste harmless treatment equipment according to claim 3, characterized in that: A negative pressure suction assembly (4) is also fixed on one side of the incinerator (1), and the negative pressure suction assembly (4) comprises an ash hopper (41), a discharge storage chamber (42), and an adsorption cylinder (43). The side of the ash hopper (41) is sealed with a suction pipe (44), and the lower end of the suction pipe (44) extends to the bottom of the annular groove (2104). The bottom of the ash hopper (41) is sealed with the discharge storage chamber (42), and the top of the ash hopper (41) is connected to the adsorption cylinder (43). The adsorption cylinder (43) is provided with a water cooling chamber (4301), an adsorption chamber (4302), a fan chamber (4303), and an exhaust chamber (4304) in sequence from bottom to top. The water cooling chamber (4301) comprises two upper and lower partitions (4305) sealed and fixed to the inner wall of the adsorption cylinder (43), and a closed water chamber is formed between the two partitions (4305). The upper and lower end surfaces of the two partitions (4305) are connected by a plurality of heat dissipation air pipes (4307); the upper and lower parts of the closed water chamber are respectively provided with circulating water joints connected to the cooling water circulation pipeline; the top of the adsorption chamber (4302) is provided with an activated carbon filter cover (4308); the activated carbon filter cover (4308) is provided with a suction duct (4309) connected to the fan chamber (4303); the fan chamber (4303) is provided with a suction fan (4310) for sucking the airflow in the suction duct (4309) and blowing it toward the exhaust chamber (4304); the top of the exhaust chamber (4304) is provided with an exhaust port (4311); and an activated carbon filter screen (4312) for filtering the airflow is provided between the air outlet of the fan chamber (4303) and the exhaust port (4311) of the exhaust chamber (4304).

5. The harmless treatment equipment for human tissue waste according to claim 4, characterized in that: The lower end of the suction tube (44) is configured as a scraper that matches the cross section of the annular groove (2104), and a gap of 1-3 mm is retained between the scraper and the annular groove (2104).

6. The human tissue waste harmless treatment equipment according to claim 1, characterized in that: The suspension rod (24) comprises a telescopic rod (241), a limiting baffle (243), and a sleeve (244); the sleeve (244) is fixed to the upper part of the furnace body (11) via a support member (245); the bottom of the telescopic rod (241) is connected to the upper surface of the upper ceramic grinding disc (25); and the upper end of the telescopic rod (241) passes through the sleeve (244) and is limited by the limiting baffle (243).

7. The harmless treatment equipment for human tissue waste according to claim 2, characterized in that: The lower ceramic grinding disc (2102) is composed of a circular grinding disc (2105), a plurality of bosses (2106) arranged at the bottom of the circular grinding disc (2105), and a center axis (2107) arranged on the center line of the bottom of the circular grinding disc (2105). The raised disc portion (2103) of the metal grinding seat (2101) is provided with a groove (2108) and a connecting hole (2109) respectively corresponding to the bosses (2106) and the connecting shaft (222). A hexagonal hole (21109) is provided below the connecting hole (2109). 0), the upper end of the connecting shaft (222) adopts a hexagonal connector that matches the hexagonal hole (2110), and the lower ceramic grinding disc (2102) is placed on the raised disc portion (2103) of the metal grinding seat (2101). At this time, the boss (2106) matches the groove (2108), and the middle axis (2107) is inserted into the connecting hole (2109). Expansion gaps are reserved between the boss (2106) and the groove (2108), and between the middle axis (2107) and the connecting hole (2109) to prevent thermal expansion and contraction.

8. The human tissue waste harmless treatment equipment according to claim 1, characterized in that: The electric heating device (23) uses an electromagnetic heating coil, which is fixed to the bottom of the furnace body (11) and is non-contactably sleeved outside the circumference of the metal grinding seat (2101). The electromagnetic heating coil is externally connected to a high-frequency current to heat the upper surface of the metal grinding seat (2101) to above 600°C.

9. The human tissue waste harmless treatment equipment according to claim 5, characterized in that: The scraper is a scraper or a metal brush.

10. The human tissue waste harmless treatment equipment according to claim 1, characterized in that: The cover body (12) is provided with a one-way air inlet valve (5) for introducing gas into the furnace body (11).

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