Solid-liquid separation apparatus for medical waste friction heat treatment

Abstract

The application discloses the technical field of medical waste treatment and particularly relates to a solid-liquid separation equipment for friction heat treatment of medical waste, which comprises a friction heat treatment assembly, a particle cooling mechanism, a feeding mechanism, a flushing mechanism and a waste liquid tank, the friction heat treatment assembly is used for friction heat treatment of medical waste, so that the waste is broken into granular waste, and the friction heat treatment assembly comprises a processing barrel in the shape of a round barrel. The application adopts an indirect water cooling process, waste particles are transported and cooled in a closed cooling conveying spiral pipe, cooling water is closed circulated in the cooling barrel and does not directly contact the material, an industrial water cooler with a circulating water pump is used for continuous refrigeration, the cooling water can be used for a long time, the traditional direct spraying cooling mode is abandoned, the overall waste water production of the equipment is greatly reduced, and the load and cost of subsequent medical waste liquid treatment are reduced.

Description

Technical Field

[0001] This invention relates to the field of medical waste treatment technology, specifically to a solid-liquid separation device for frictional heat treatment of medical waste. Background Technology

[0002] Medical waste carries a large number of pathogenic microorganisms and is classified as hazardous waste, requiring strict harmless treatment before disposal. Friction heat treatment is a common process for reducing the volume and disinfecting medical waste. It relies on the frictional heat generated between materials and between materials and cutting tools during the crushing process to achieve disinfection, while simultaneously breaking the waste into granular form for easier subsequent transportation and disposal.

[0003] The waste particles after friction heat treatment are at a high temperature and need to be cooled before collection. Most existing equipment uses spray water cooling to directly cool the particles. The cooling water comes into direct contact with the medical waste particles, which leads to the contamination of the entire cooling water body and the generation of a large amount of medical wastewater. This significantly increases the load, reagent consumption, and operating costs of subsequent waste liquid disinfection treatment. Therefore, it is necessary to develop a solid-liquid separation device for friction heat treatment of medical waste. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A solid-liquid separation device for frictional heat treatment of medical waste includes a frictional heat treatment component, a particle cooling mechanism, a feeding mechanism, a rinsing mechanism, and a waste liquid tank. The frictional heat treatment component is used to perform frictional heat treatment on medical waste to break the waste into particles, including a cylindrical treatment tank. The particle cooling mechanism is located below the friction heat treatment assembly and is used to continuously cool the crushed waste particles. It includes a cooling tank fixed to the bottom of the treatment tank, and the interior of the cooling tank is equipped with a cooling conveying spiral pipe. The feeding mechanism is located below the particle cooling mechanism and is used to transport the cooled waste particles, including a feeding cylinder; The rinsing mechanism is located inside the processing tank and is used to rinse the waste particles remaining inside the processing tank. The waste liquid tank is located below the feeding mechanism. After rinsing, the solid and liquid pass through the interior of the cooling conveying spiral tube and then enter the feeding cylinder. The feeding cylinder conveys the solid and liquid while separating them, and the separated waste liquid is stored in the waste liquid tank.

[0006] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, wherein: a partition is fixedly connected to the upper part of the inner cavity of the treatment tank, and an installation area is formed between the top of the partition and the top of the inner cavity of the treatment tank; The bottom of the processing barrel is a funnel-shaped support that is wider at the top and narrower at the bottom, and a tripod is fixedly installed at the center of the bottom of the inner cavity of the support. A vertical main shaft is rotatably mounted between the partition and the tripod via a sealed bearing. Three vertical secondary shafts are rotatably mounted between the partition and the base via sealed bearings, surrounding the main shaft. Blades are evenly and alternately arranged on the outer periphery of the main shaft and the secondary shafts. The upper ends of the main shaft and each secondary shaft are located inside the installation area and are respectively fixed with a main gear and a secondary gear meshing with the main gear. A servo motor for driving the rotation of the main shaft is provided on the top of the processing tank.

[0007] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, a safety gap is always maintained between the blade and the inner wall of the treatment tank. A discharge pipe is fixedly connected to the center of the bottom of the inner cavity of the processing tank. The upper end of the discharge pipe is set at a distance from the tripod. The lower end of the discharge pipe is fixed with a first discharge valve through a flange. The valve stem of the first discharge valve rotates through the outer wall of the cooling tank through a sealed bearing. A feeding hopper is fixedly installed on the top of the partition. The upper end of the feeding hopper is located on the top of the processing barrel and is hinged to a top cover. The top cover is equipped with a lock and a handle.

[0008] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, wherein: a plurality of shock absorbers are uniformly fixed to the bottom of the inner cavity of the cooling tank, and a mounting plate is fixed to the top of all the shock absorbers; a spring-shaped cooling conveying spiral tube is fixed to the top of the mounting plate via a bracket; an underwater vibration motor is also fixed to the top of the mounting plate; the inner surface of the cooling conveying spiral tube is smooth, and a first stainless steel metal hose and a second stainless steel metal hose are fixedly connected to its upper and lower ends respectively; the upper end of the first stainless steel metal hose is fixed to the lower end of the first discharge valve via a flange; the lower end of the second stainless steel metal hose passes through the mounting plate and the bottom center of the cooling tank via a sealing ring; the lower end of the second stainless steel metal hose is connected to a second discharge valve via a flange; the lower end of the second discharge valve is connected to a feeding pipe via a flange; the inner cavities of the cooling tank surrounding the cooling conveying spiral tube are not interconnected.

[0009] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, an industrial chiller is provided outside the treatment tank. The industrial chiller includes an inlet pipe and an outlet pipe. The inlet end of the inlet pipe and the outlet end of the outlet pipe are respectively connected to the inner cavity of the cooling tank through sealing rings.

[0010] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, the feeding cylinder is installed at the bottom of the cooling tank by a fixing frame. The feeding cylinder is a hollow cylinder, and the inner cavity of the feeding cylinder is inclined with the left side lower than the right side. The lower end of the feeding pipe is fixedly connected to the top of the inner cavity of the feeding cylinder on the left side. A spiral feeding roller is rotatably arranged inside the feeding cylinder through a sealed bearing. A discharge pipe is fixedly connected to the bottom right side of the feeding cylinder. A servo motor is fixedly connected to the outside of the feeding cylinder through a motor base. The output shaft of the servo motor is fixedly connected to one end of the spiral feeding roller through a coupling.

[0011] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, the rinsing mechanism includes a plurality of rinsing pipes fixed on a partition plate, the lower end of the rinsing pipe is located below the partition plate and is fixedly connected to a rinsing head, and the other end of the rinsing pipe is connected to a water pump and a water source.

[0012] As a preferred embodiment of the solid-liquid separation device for frictional heat treatment of medical waste according to the present invention, the top of the waste liquid tank is embedded and sealed in the lower left half of the feeding cylinder. An arc-shaped filter screen is fixedly connected to the bottom left of the inner cavity of the feeding cylinder. The upper arc surface of the arc-shaped filter screen is aligned with the lower arc surface of the inner cavity of the feeding cylinder. A water level sensor is provided on the top of the waste liquid tank. The probe of the water level sensor is located in the inner cavity of the waste liquid tank. A digital display screen electrically connected to the water level sensor is fixed to the front side wall of the waste liquid tank. A drain pipe with a drain valve is fixed to the side wall of the waste liquid tank.

[0013] The beneficial effects of this invention are: 1. The indirect water cooling process is adopted. Waste particles are transported and cooled in a closed cooling conveying spiral tube. The cooling water circulates in a closed loop in the cooling tank and does not come into direct contact with the materials. It is continuously cooled by an industrial chiller with its own circulating water pump. The cooling water can be recycled for a long time. This method abandons the traditional direct spray cooling method, which greatly reduces the overall wastewater generation of the equipment and reduces the load and cost of subsequent medical waste liquid treatment.

[0014] 2. Equipped with a multi-axis linkage crushing friction structure, it can crush and rub materials, improve the uniformity of crushing and friction heat treatment, and ensure the disinfection effect to a certain extent.

[0015] 3. The cooling process is equipped with an underwater vibrating motor to assist in the conveying process. This motor drives the cooling conveying spiral tube to vibrate slightly, which can reduce the adhesion and accumulation of high-temperature particles on the tube wall, ensuring smooth conveying, and also enhance the heat exchange efficiency of the tube wall and improve the cooling effect.

[0016] 4. Solid-liquid separation is completed simultaneously during the feeding process. The arc-shaped filter screen at the bottom of the feeding cylinder is used to filter and collect waste liquid along the conveying path, eliminating the need for additional independent separation equipment and resulting in a compact structure.

[0017] 5. The equipment integrates friction heat treatment, particle cooling, screw feeding, synchronous solid-liquid separation, internal rinsing, and waste liquid collection into one integrated process. The processes are connected continuously without intermediate transfer, which can reduce the risk of secondary pollution caused by material exposure and reduce the overall footprint of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A structural schematic diagram of the cross-sections of the intermediate treatment tank, cooling tank, and waste liquid tank; Figure 3 For the present invention Figure 2 A schematic diagram of the structure viewed from the side (upward angle); Figure 4 This is a schematic diagram of the structure of the friction heat treatment assembly and other components of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure viewed from the side (upward angle); Figure 6 This is a schematic diagram of the structure of some components of the particle cooling mechanism of the present invention; Figure 7 For the present invention Figure 6 Exploded view of the central support and cooling conveying spiral pipe; Figure 8 This is a structural schematic diagram of the feed cylinder and the cross-section of the arc-shaped filter screen of the present invention.

[0019] In the diagram: Friction heat treatment assembly - 100; Treatment tank - 101; Baffle plate - 102; Installation area - 103; Base support - 104; Tripod - 105; Main shaft - 106; Slave shaft - 107; Blade - 108; Main gear - 109; Slave gear - 110; Servo motor - 111; Discharge pipe - 117; First discharge valve - 118; Valve stem - 119; Feed hopper - 120; Top cover - 121; Particle cooling mechanism - 200; Cooling tank - 201; Shock absorber - 202; Mounting plate - 203; Bracket - 204; Cooling conveying spiral pipe - 205; Underwater vibration motor - 206; 1. Stainless steel metal flexible hose - 207; 2. Stainless steel metal flexible hose - 208; 2. Discharge valve - 209; Feeding pipe - 210; Industrial chiller - 211; Inlet pipe - 212; Outlet pipe - 213; Feeding mechanism - 300; Feeding cylinder - 301; Fixing frame - 302; Spiral feed roller - 303; Discharge pipe - 304; Motor base - 305; Servo motor - 306; Flushing mechanism - 400; Flushing pipe - 401; Flushing head - 402; Waste liquid tank - 500; Arc filter screen - 501; Water level sensor - 502; Digital display screen - 503; Drain valve - 504; Drain pipe - 505. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Please see Figures 1-8 The diagram shows a structural schematic of an embodiment of a solid-liquid separation device for frictional heat treatment of medical waste according to the present invention. Please refer to [link / reference]. Figures 1-8 This paper provides a detailed introduction to a solid-liquid separation device used for frictional heat treatment of medical waste. Example 1

[0025] A solid-liquid separation device for frictional heat treatment of medical waste includes a frictional heat treatment component 100, a particle cooling mechanism 200, a feeding mechanism 300, a rinsing mechanism 400, and a waste liquid tank 500. Friction heat treatment assembly 100 is used to perform friction heat treatment on medical waste to break the waste into granular form, including a cylindrical treatment container 101; The particle cooling mechanism 200 is located below the friction heat treatment assembly 100 and is used to continuously cool the crushed waste particles. It includes a cooling tank 201 fixed to the bottom of the treatment tank 101, and a cooling conveying spiral pipe 205 is provided inside the cooling tank 201. The feeding mechanism 300 is located below the particle cooling mechanism 200 and is used to transport the cooled waste particles, including the feeding cylinder 301; The rinsing mechanism 400 is installed inside the treatment tank 101 and is used to rinse the waste particles remaining inside the treatment tank 101. Waste liquid tank 500 is located below the feeding mechanism 300. After rinsing, the solid and liquid pass through the interior of the cooling conveying spiral tube 205 and then enter the feeding cylinder 301. The feeding cylinder 301 conveys the solid and liquid while separating them. The separated waste liquid is stored in the waste liquid tank 500. Example 2

[0026] The friction heat treatment assembly 100 includes a cylindrical treatment tank 101, a partition 102 fixedly connected to the upper part of the inner cavity of the treatment tank 101, and an installation area 103 formed between the top of the partition 102 and the top of the inner cavity of the treatment tank 101; the bottom of the treatment tank 101 is a funnel-shaped base 104 that is wider at the top and narrower at the bottom, and a tripod 105 is fixedly installed at the center of the bottom of the inner cavity of the base 104.

[0027] A vertical main shaft 106 is rotatably mounted between the partition 102 and the tripod 105 via a sealed bearing. Three vertical secondary shafts 107 are rotatably mounted between the partition 102 and the base 104 via sealed bearings, surrounding the main shaft 106. Blades 108 are evenly and alternately arranged on the outer periphery of the main shaft 106 and the secondary shafts 107. The upper ends of the main shaft 106 and each secondary shaft 107 are located inside the mounting area 103 and are respectively fixed with a main gear 109 and a secondary gear 110 meshing with the main gear 109. A servo motor 111 for driving the rotation of the main shaft 106 is provided on the top of the processing tank 101.

[0028] The blade 108 and the inner wall of the processing tank 101 always have a safety gap; the discharge pipe 117 is fixedly connected to the center of the bottom of the inner cavity of the processing tank 101, and the upper end of the discharge pipe 117 is set at a distance from the tripod 105; the discharge pipe 117 is fixedly connected to the center of the bottom of the inner cavity of the processing tank 101, and the lower end of the discharge pipe 117 is fixed with a first discharge valve 118 through a flange, and the valve stem 119 of the first discharge valve 118 rotates through the outer wall of the cooling tank 201 through a sealed bearing.

[0029] The processing tank 101 is preferably constructed from 304 stainless steel sheet, welded together with a thickness of 8mm. The inner wall undergoes electrolytic polishing to reduce material adhesion and is suitable for corrosive environments requiring disinfectants. The main gear 109 and driven gear 110 are made of tempered carbon steel with a transmission precision controlled at level 7, ensuring smooth multi-axis rotation. All sealed bearings are stainless steel bearings with fluororubber seals, providing protection suitable for humid and corrosive environments, effectively reducing the entry of waste liquid and debris into the bearings. The servo motor 111 is equipped with a planetary gearbox, with output torque suitable for medical waste crushing loads, and the speed can be adjusted according to the material hardness. Example 3

[0030] The particle cooling mechanism 200 is located below the friction heat treatment assembly 100 and includes a cooling tank 201 fixed to the bottom of the treatment tank 101. A cooling conveying spiral tube 205 is provided inside the cooling tank 201. Several shock absorbers 202 are uniformly fixed to the bottom of the inner cavity of the cooling tank 201. A mounting plate 203 is fixed to the top of all the shock absorbers 202. A spring-shaped cooling conveying spiral tube 205 is fixed to the top of the mounting plate 203 through a bracket 204. An underwater vibration motor 206 is also fixed to the top of the mounting plate 203. The inner surface of the cooling conveying spiral tube 205 is smooth, and the upper and lower ends are respectively fixedly connected to a first stainless steel metal hose 207 and a second stainless steel metal hose 208. The upper end of the first stainless steel metal hose 207 is fixedly connected to the lower end of the first discharge valve 118 through a flange. The lower end of the second stainless steel metal hose 208 passes through the mounting plate 203 and the bottom center of the cooling tank 201 through a sealing ring. The lower end of the second stainless steel metal hose 208 is connected to a second discharge valve 209 through a flange. The lower end of the second discharge valve 209 is connected to a feeding pipe 210 through a flange. The cooling tank 201 surrounds the cooling conveying spiral tube 205, and the inner cavities of the two are not connected.

[0031] An industrial chiller 211 is installed on the outside of the treatment tank 101. The industrial chiller 211 includes an inlet pipe 212 and an outlet pipe 213. The inlet end of the inlet pipe 212 and the outlet end of the outlet pipe 213 are respectively connected to the inner cavity of the cooling tank 201 through sealing rings.

[0032] The cooling tank 201 preferably adopts a double-layer insulation structure made of 304 stainless steel, with a 30mm thick polyurethane insulation layer on the outer wall, which can reduce heat loss and reduce refrigeration energy consumption. The cooling conveying spiral tube 205 is made of seamless 316L stainless steel tube with a wall thickness of 2mm. The number of spiral turns and the pitch are matched to the cooling time requirements. The inner wall is electrolytically polished to reduce particle conveying resistance and adhesion probability. The shock absorber 202 uses a spring-damped composite shock absorber with 6 sets evenly arranged around the circumference, which can effectively counteract the vibration generated by the underwater vibrating motor 206, reduce the transmission of vibration to the whole machine, and avoid fatigue damage to the rigid connection of the pipeline. The underwater vibrating motor 206 is a waterproof vibrating motor with an IP68 protection rating. It can be submerged in cooling water for a long time. The vibration can promote the uniform downward movement of particles in the cooling conveying spiral tube 205, avoid accumulation and jamming, and at the same time disturb the cooling water around the tube wall to enhance heat exchange efficiency. The industrial chiller 211 is a mature, integrated device with its own circulating water pump. It can maintain the cooling water in the cooling tank 201 within a set low temperature range. The cooling water circulates in a closed loop between the cooling tank 201 and the industrial chiller 211, without contacting medical waste particles throughout the process, thus significantly reducing wastewater generation. The first stainless steel metal hose 207 and the second stainless steel metal hose 208 are made of 304 stainless steel braided hoses, which can compensate for displacement deviations caused by vibration, absorb vibration impact, and ensure the sealing of pipeline connections. Example 4

[0033] The feeding mechanism 300 is located below the particle cooling mechanism 200 and includes a feeding cylinder 301. The feeding cylinder 301 is installed at the bottom of the cooling tank 201 via a fixing bracket 302. The feeding cylinder 301 is a hollow cylinder, and its inner cavity is inclined from left to right, which facilitates the flow of liquid to the lower part. The lower end of the feeding pipe 210 is fixedly connected to the top of the inner cavity of the feeding cylinder 301 on the left. Inside the feeding cylinder 301, a spiral feeding roller 303 is rotatably mounted via a sealed bearing. A discharge pipe 304 is fixedly connected to the bottom right side of the feeding cylinder 301. Outside the feeding cylinder 301, a servo motor 306 is fixedly connected via a motor base 305. The output shaft of the servo motor 306 is fixedly connected to one end of the spiral feeding roller 303 via a coupling.

[0034] The rinsing mechanism 400 is located inside the treatment tank 101 and includes several rinsing pipes 401 fixed on the partition 102. The lower end of the rinsing pipe 401 is located below the partition 102 and is fixedly connected to a rinsing head 402. The other end of the rinsing pipe 401 is connected to a water pump and a water source.

[0035] The waste liquid tank 500 is located below the feeding mechanism 300. The top of the waste liquid tank 500 is embedded and sealed within the lower left half of the feeding cylinder 301. An arc-shaped filter screen 501 is fixedly connected to the bottom left of the inner cavity of the feeding cylinder 301. The upper arc-shaped surface of the filter screen 501 is flush with the lower arc-shaped surface of the inner cavity of the feeding cylinder 301. A water level sensor 502 is installed on the top of the waste liquid tank 500. The probe of the water level sensor 502 is located in the inner cavity of the waste liquid tank 500. A digital display screen 503, which is electrically connected to the water level sensor 502, is fixedly connected to the front wall of the waste liquid tank 500. A drain pipe 505 with a drain valve 504 is fixed to the side wall of the waste liquid tank 500.

[0036] The feeding cylinder 301 is made of 304 stainless steel and has a polished inner wall. The gap between the blades of the spiral feeding roller 303 and the inner wall of the cylinder is controlled at 1 to 2 mm, which ensures conveying efficiency and reduces the probability of small particles getting stuck. The arc-shaped filter screen 501 is made of 316 stainless steel wedge mesh with a gap size smaller than the qualified waste particle size. It can intercept solid particles during the conveying process, allowing only waste liquid to flow into the waste liquid tank 500, achieving simultaneous solid-liquid separation during the conveying process without the need for additional separation equipment. The flushing head 402 uses high-pressure fan-shaped atomizing nozzles, with 6 sets evenly arranged around the circumference of the partition 102. During flushing, the water mist can cover the inner wall of the treatment tank 101, the blade 108, and the surface of the base 104. The flushing water consumption per unit area is small and the coverage area is large, further reducing the production of flushing wastewater. The waste liquid tank 500 adopts a sealed welded structure made of 304 stainless steel, with the top fully welded to the feeding cylinder 301 to prevent waste liquid leakage. The water level sensor 502 is an immersion-type liquid level sensor that can monitor the waste liquid level in the tank in real time and display the value intuitively on the digital display screen 503. When the water level reaches the bottom of the arc-shaped filter screen 501, the operator can open the drain valve 504 to discharge the waste liquid for subsequent disinfection treatment. The fixing frame 302 is welded from carbon steel powder-coated profiles and is fastened to the bottom of the cooling tank 201 with bolts to ensure the operational stability of the feeding cylinder 301.

[0037] Working principle The equipment operation is divided into four processes: friction heat treatment, particle cooling, solid-liquid separation and conveying, and equipment flushing, which are carried out in sequence.

[0038] Frictional heat treatment process: The medical waste to be treated is put into the treatment container 101. The servo motor 111 is started, driving the main shaft 106 to rotate. Through the meshing transmission of the main gear 109 and three driven gears 110, the three driven shafts 107 are driven to rotate synchronously. The staggered blades 108 cut, tear and crush the waste. At the same time, the material and the blades 108 and the inner wall of the treatment container 101 continuously generate heat through friction, so that the waste is heated up and disinfected. If the temperature is too high during the treatment process, a small amount of water is sprayed to cool down the crushed waste and prevent the internal waste from melting and clumping due to excessive temperature. This ensures that the temperature is within a relatively stable working range and that effective sterilization is carried out. The water sprayed in this small amount will evaporate directly and will not accumulate at the bottom to form a large amount of sewage. A steam treatment device can also be installed on the top of the treatment container 101 to treat the exhaust gas appropriately.

[0039] Particle cooling process: The first discharge valve 118 and the second discharge valve 209 are opened, allowing high-temperature particles to enter the cooling conveying spiral tube 205 through the discharge pipe 117 and the first stainless steel flexible metal hose 207, slowly sliding down the spiral channel. The industrial chiller 211, through its built-in circulating water pump, drives cooling water through the inlet pipe 212 into the inner cavity of the cooling tank 201. The cooled water, after absorbing heat, flows back to the industrial chiller 211 through the outlet pipe 213 for refrigeration, forming a closed loop that continuously maintains the cooling water in the cooling tank 201 at a low temperature. The cooling conveying spiral tube 205 is completely submerged in the cooling water. The heat from the high-temperature particles is conducted to the external cooling water through the tube wall, achieving indirect water cooling. Throughout the process, the particles and cooling water do not come into contact, preventing the cooling water from being contaminated by waste. The underwater vibration motor 206 operates synchronously, causing the mounting plate 203 and the cooling conveying spiral tube 205 to generate small-amplitude, high-frequency vibrations, promoting uniform particle descent within the tube, reducing particle adhesion to the tube wall, and simultaneously enhancing the heat exchange effect of the tube wall, thus improving cooling efficiency. The cooled granules are fed into the inner cavity of the feeding cylinder 301 through the second stainless steel metal hose 208, the second discharge valve 209, and the feeding pipe 210.

[0040] Solid-liquid separation and conveying process: The servo motor 306 starts, driving the screw feed roller 303 to rotate, conveying the cooled particles entering the feeding cylinder 301 to the right. During the conveying process, the free liquid entrained in the particles passes through the arc-shaped filter screen 501 under the action of gravity and flows into the waste liquid tank 500 below for storage; the solid particles are intercepted by the arc-shaped filter screen 501 and continue to be conveyed by the screw feed roller 303 to the discharge pipe 304 for discharge and collection. Solid-liquid separation is completed simultaneously during the conveying process. The liquid level in the waste liquid tank 500 is monitored in real time by the water level sensor 502, and the liquid level value is displayed intuitively on the digital display screen 503. When the liquid level reaches the set threshold, the operator opens the drain valve 504, and the waste liquid is discharged through the drain pipe 505 and uniformly conveyed to the subsequent disinfection treatment process.

[0041] Equipment rinsing process: After a single batch of materials is processed, the first discharge valve 118 is closed, and the external water pump is started. Clean water is transported to the rinsing head 402 through the rinsing pipe 401, spraying downwards to rinse the inner wall of the treatment tank 101 and the surface of the blades 108 to remove residual waste particles. The solid-liquid mixture generated during rinsing passes sequentially through the discharge pipe 117, the cooling conveying spiral pipe 205, and the feeding pipe 210 into the feeding cylinder 301. During the spiral conveying process, solid-liquid separation is completed through the arc-shaped filter screen 501. The waste liquid is stored in the waste liquid tank 500 for unified collection, and the solid residue is discharged from the discharge pipe 304 along with the conveyor. The rinsing process consumes only a small amount of clean water, and the overall wastewater volume generated is far lower than that of the traditional direct spray cooling process.

[0042] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A solid-liquid separation device for frictional heat treatment of medical waste, comprising a frictional heat treatment assembly (100), a particle cooling mechanism (200), a feeding mechanism (300), a rinsing mechanism (400), and a waste liquid tank (500), characterized in that: The friction heat treatment assembly (100) is used to perform friction heat treatment on medical waste to break the waste into granular form, including a cylindrical treatment container (101). The particle cooling mechanism (200) is located below the friction heat treatment assembly (100) and is used to continuously cool the crushed waste particles. It includes a cooling tank (201) fixed at the bottom of the treatment tank (101), and a cooling conveying spiral pipe (205) is provided inside the cooling tank (201). The feeding mechanism (300) is located below the particle cooling mechanism (200) and is used to transport the cooled waste particles, including a feeding cylinder (301). The rinsing mechanism (400) is located inside the processing tank (101) and is used to rinse the waste particles remaining inside the processing tank (101); The waste liquid tank (500) is located below the feeding mechanism (300). After rinsing, the solid and liquid pass through the interior of the cooling conveying spiral tube (205) and then enter the feeding cylinder (301). The feeding cylinder (301) conveys the solid and liquid while separating the solid and liquid. The separated waste liquid is stored in the waste liquid tank (500).

2. The solid-liquid separation device for frictional heat treatment of medical waste according to claim 1, characterized in that: A partition (102) is fixedly connected to the upper part of the inner cavity of the processing tank (101), and an installation area (103) is formed between the top of the partition (102) and the top of the inner cavity of the processing tank (101). The bottom of the processing barrel (101) is a funnel-shaped base (104) that is wider at the top and narrower at the bottom, and a tripod (105) is fixedly installed at the center of the bottom of the inner cavity of the base (104). A vertical main shaft (106) is rotatably connected between the partition (102) and the tripod (105) via a sealed bearing, and three vertical secondary shafts (107) are rotatably connected between the partition (102) and the base (104) via a sealed bearing, surrounding the main shaft (106). The outer periphery of the main shaft (106) and the driven shaft (107) is uniformly and alternately provided with blades (108). The upper ends of the main shaft (106) and each driven shaft (107) are located inside the installation area (103) and are respectively fixed with a main gear (109) and a driven gear (110) meshing with the main gear (109). The top of the processing barrel (101) is provided with a servo motor (111) for driving the main shaft (106) to rotate.

3. A solid-liquid separation device for frictional heat treatment of medical waste according to claim 2, characterized in that: The inner walls of the blade (108) and the processing barrel (101) always have a safety gap. The bottom center of the inner cavity of the processing tank (101) is fixed with a discharge pipe (117). The upper end of the discharge pipe (117) is spaced apart from the tripod (105). The lower end of the discharge pipe (117) is fixed with a first discharge valve (118) through a flange. The valve stem (119) of the first discharge valve (118) rotates through the outer wall of the cooling tank (201) through a sealed bearing. The top of the partition (102) is fixedly provided with a feeding hopper (120), the upper end of the feeding hopper (120) is located on the top of the processing barrel (101), and a top cover (121) is hinged thereon. The top cover (121) is provided with a lock and a handle.

4. A solid-liquid separation device for frictional heat treatment of medical waste according to claim 1, characterized in that: The bottom of the inner cavity of the cooling tank (201) is uniformly fixed with several shock absorbers (202). The top of all the shock absorbers (202) is fixed with a mounting plate (203). The top of the mounting plate (203) is fixed with a spring-shaped cooling conveying spiral tube (205) through a bracket (204). The top of the mounting plate (203) is also fixed with an underwater vibration motor (206). The inner surface of the cooling conveying spiral tube (205) is smooth and the upper and lower ends are respectively fixedly connected with a first stainless steel metal hose (207) and a second stainless steel metal hose (208). The upper end of the first stainless steel metal hose (207) is fixed to the lower end of the first discharge valve (118) through a flange. The lower end of the second stainless steel metal hose (208) passes through the bottom center of the mounting plate (203) and the cooling tank (201) through a sealing ring. The lower end of the second stainless steel metal hose (208) is connected to the second discharge valve (209) through a flange. The lower end of the second discharge valve (209) is connected to the feeding pipe (210) through a flange. The inner cavities of the cooling tank (201) surrounding the cooling conveying spiral pipe (205) are not connected.

5. A solid-liquid separation device for frictional heat treatment of medical waste according to claim 4, characterized in that: An industrial chiller (211) is provided on the outside of the processing tank (101). The industrial chiller (211) includes an inlet pipe (212) and an outlet pipe (213). The inlet end of the inlet pipe (212) and the outlet end of the outlet pipe (213) are respectively connected to the inner cavity of the cooling tank (201) through sealing rings.

6. A solid-liquid separation device for frictional heat treatment of medical waste according to claim 4, characterized in that: The feeding cylinder (301) is installed at the bottom of the cooling tank (201) by a fixing frame (302). The feeding cylinder (301) is a hollow cylindrical shape. The inner cavity of the feeding cylinder (301) is inclined with the left side lower and the right side higher. The lower end of the feeding pipe (210) is fixed to the top of the inner cavity of the feeding cylinder (301) on the left side. The spiral feeding roller (303) is rotatably installed inside the feeding cylinder (301) through a sealed bearing. The discharge pipe (304) is fixed to the bottom right side of the feeding cylinder (301). The servo motor (306) is fixed to the outside of the feeding cylinder (301) through a motor base (305). The output shaft of the servo motor (306) is fixed to one end of the spiral feeding roller (303) through a coupling.

7. A solid-liquid separation device for frictional heat treatment of medical waste according to claim 1, characterized in that: The rinsing mechanism (400) includes several rinsing pipes (401) fixed on the partition (102). The lower end of the rinsing pipe (401) is located below the partition (102) and is fixed with a rinsing head (402). The other end of the rinsing pipe (401) is connected to a water pump and a water source.

8. A solid-liquid separation device for frictional heat treatment of medical waste according to claim 6, characterized in that: The top of the waste liquid tank (500) is embedded and sealed in the lower left half of the feeding cylinder (301). An arc-shaped filter screen (501) is fixed to the bottom left of the inner cavity of the feeding cylinder (301). The upper arc surface of the arc-shaped filter screen (501) is aligned with the lower arc surface of the inner cavity of the feeding cylinder (301). A water level sensor (502) is installed on the top of the waste liquid tank (500). The probe of the water level sensor (502) is located in the inner cavity of the waste liquid tank (500). A digital display screen (503) electrically connected to the water level sensor (502) is fixed to the front side wall of the waste liquid tank (500). A drain pipe (505) with a drain valve (504) is fixed to the side wall of the waste liquid tank (500).

Images