Medical waste buried scraper conveyor device and method

Abstract

A medical waste scraper conveyor device and method utilizes a disconnected head shaft to prevent contact with medical waste. The left and right tail shafts are separated and independently installed, with rollers installed on the corresponding tail wheels to prevent medical waste from entanglement with the tail shafts. The width of the bearing cavities in the draining and feeding sections is configured as a U-shaped trough that is smaller than the width of the machine trough. The width of the feeding port in the feeding section is configured to be smaller than the width of the machine trough, and shields are installed above the corresponding guide rails to prevent medical waste from entanglement with the chain. The medical waste scraper conveyor device and method provided by the present invention can ensure the normal transportation of medical waste.

Description

Technical Field

[0001] The invention relates to a buried scraper conveyor, in particular to a buried scraper conveyor device and method for medical waste. Background Art

[0002] Medical waste is divided into five categories: infectious waste, pathological waste, injury waste, pharmaceutical waste, and chemical waste. Currently, the harmless treatment process for medical waste (except for pathological waste) involves chemical disinfection, pressure steam sterilization, crushing, and conveyor transport to an incinerator.

[0003] Characteristics of medical waste: 1) Infectious waste, such as medical waste plastics and disposable infusion hoses, is highly entangled and easily forms clumps. 2) Injurious waste, such as medical needles, scalpels, surgical knives, and glass test tubes, is not considered bulk material. Its angle of repose is close to 90° and it lacks fluidity. Broken glass, which forms chunks, is also not considered bulk material. Its angle of repose is close to 80° and it has poor fluidity. 3) Pharmaceutical waste, such as discarded medicines, is often packaged. Broken medicines contain plastic and paper, which are highly entangled and easily form clumps. Mixed powdered and liquid medicines are highly cohesive. 4) Chemical waste: Toxic, corrosive, flammable, and explosive. Broken chemical reagents, chemical disinfectants, mercury sphygmomanometers, and mercury thermometers are highly cohesive and corrosive, not bulk materials, with an angle of repose close to 80° and poor fluidity.

[0004] Currently, the most commonly used equipment for transporting medical waste is a belt conveyor. This equipment has the following problems: 1) its structure is not sealed, resulting in odor leakage and scattered waste; 2) the crushed medical waste, with a particle size of 30.50 mm, still has a strong tendency to entangle. The existing belt conveyor's concave arc section pressure rollers come into contact with the medical waste on the belt. The pressure rollers at both ends are assembled on the pressure roller shaft. After a period of operation, the medical waste entangles on the pressure roller shaft, turning the area into a large roller and eventually causing it to become stuck.

[0005] The following problems need to be solved when transporting medical waste using existing buried scraper conveyors:

[0006] 1) Medical waste has poor fluidity. It can be squeezed into a ball by hand, but it cannot be loosened after being released. What measures should be taken to ensure that medical waste with a moisture content of 45% to 65% can fall smoothly into the buried scraper conveyor is an urgent problem to be solved.

[0007] 2) The moisture content of medical waste is 45% to 65%. What measures should be taken to ensure that only the drained medical waste is normally transported and the accumulated liquid in the shell is not transported is an urgent problem to be solved.

[0008] 3) Medical waste has a strong tendency to entangle. What measures should be taken to prevent medical waste from entangled with the head shaft so that the head can unload normally is an urgent problem to be solved; what measures should be taken to prevent medical waste from entangled with the tail shaft so that the tail does not accumulate is an urgent problem to be solved; what measures should be taken to prevent medical waste from entangled with the chain and sticking to the inside of the shell so that normal transportation can be achieved is an urgent problem to be solved.

[0009] To prevent entanglement, existing conveyor systems use a large roller to wrap around the shaft and tail wheel, leaving the tail wheel partially exposed. However, because material typically accumulates at the tail end of the equipment, the accumulated medical waste can become compressed and twisted into a rope, entangled around the large roller, and eventually resemble a snowball. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a medical waste buried scraper conveyor device and method to ensure normal transportation of medical waste.

[0011] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0012] A medical waste buried scraper conveyor device comprises a head, a draining middle section, a scraper chain, a feeding section and a tail;

[0013] The head includes a left head shaft and a right head shaft, one end of the left head shaft is assembled through the left internal dustproof bearing and the left external bearing, and the other end of the left head shaft extends into the head shell to install the left head wheel; one end of the right head shaft is assembled through the right internal dustproof bearing and the right external bearing, and the other end of the right head shaft extends into the head shell to install the right head wheel;

[0014] The draining middle section includes a middle section shell, an unloaded section guide rail and a loaded section guide rail are provided on the upper portion of the middle section shell, an unloaded chain shield is provided directly above the unloaded section guide rail, and a loaded chain shield is provided directly above the loaded section guide rail; a middle section U-shaped trough is provided at the lower portion of the middle section shell, and the middle section U-shaped trough is connected to the drain trough through a sewage seepage hole;

[0015] The feeding section includes a feeding section shell, which has the same structure as the shell of the draining middle section; in addition, a feeding port and a limiting device are provided at the upper end of the feeding section; wherein the limiting device cleans the scraper or limits the cleaning of medical waste that exceeds the height of the scraper;

[0016] The tail part includes a left tail shaft and a right tail shaft, which are installed on both sides of the tail shell and are independent of each other; a left tail wheel is installed on the left tail shaft, and a left roller is installed on the left tail wheel; a right tail wheel is installed on the right tail shaft, and a right roller is installed on the right tail wheel, and the teeth of the left and right tail wheels are partially exposed.

[0017] A pair of chain-off knives are installed on the upper right side of the head shell body, and one end of the chain-off knife is bent downward and points to the left head wheel or the right head wheel.

[0018] The drain middle section is arranged obliquely, and a drain pipe joint is installed at the lower end of the corresponding drain trough. The drain pipe joints of multiple drain middle sections are connected to the main sewage pipe through branch pipes.

[0019] The material limiting device includes a sealing cover, the lower end of the sealing cover is welded to the feeding section shell, the upper end of the sealing cover is assembled with a nut through a fixing assembly, the lifting screw is threadedly connected to the nut, and the lower end of the lifting screw is installed with a material limiting cleaning plate.

[0020] The material limiting cleaning plate is made of silica gel.

[0021] The two sides and the bottom of the bearing cavity in the middle section of drainage and the lower part of the feeding section are lined with lining plates, and the lining plates are made of PE.

[0022] A method for conveying medical waste comprises the following steps: a head shaft is broken into a left head shaft and a right head shaft, the left head shaft and the right head shaft are arranged as a cantilever structure, and are assembled using a bearing assembly outside a head shell so that the medical waste does not contact the head shaft; the left tail shaft and the right tail shaft are separately arranged independently, and rollers are installed on the corresponding tail wheels to prevent the medical waste from being entangled with the tail shafts; the width of the bearing cavity of the middle drainage section and the feeding section is set to a U-shaped trough body that is smaller than the width of the machine trough, the width of the feeding port of the feeding section is set to be smaller than the width of the machine trough, and a shield is arranged above the corresponding guide rail to prevent the medical waste from being entangled with the chain.

[0023] The present invention provides a medical waste buried scraper conveyor device and method, which has the following technical effects:

[0024] 1) The left tail shaft is mounted using a left bearing assembly, the left tail wheel is mounted on the left tail shaft, and the left roller is mounted outside the left tail wheel. The left roller covers the left tail shaft and the left tail wheel, leaving only the teeth exposed. The right tail shaft is mounted using a right bearing assembly, the right tail wheel is mounted on the right tail shaft, and the right roller is mounted outside the right tail wheel. The right roller covers the right tail shaft and the right tail wheel, leaving only the teeth exposed. In this structure, the left and right components are used independently and do not interfere with each other. The head is also designed in this way, so that medical waste has no chance of contact with the head and tail shafts, preventing entanglement. In addition, a chain-breaking knife is located in the upper right part of the head housing. During the return stroke of the scraper chain, this not only prevents incompletely discharged medical waste from entanglement with the head sprocket, ensuring normal and stable operation of the head, but also forcibly breaks the chain, ensuring normal operation of the equipment.

[0025] 2) By tilting the drain and feeding sections, and machining the U-shaped troughs at the bottom of the drain and feeding sections with round holes for wastewater seepage, wastewater from medical waste seeps through the U-shaped troughs and flows into the drain trough. This ensures the separation of medical waste from wastewater, allowing the accumulated liquid in the medical waste to be channeled away separately.

[0026] 3) By designing the load-bearing cavities of the draining and feeding sections as U-shaped troughs, which are smaller than the width of the machine trough, and the feeding port of the feeding section is also smaller than the width of the machine trough, the conveyor chain in the scraper chain is hidden under the shield of the unloaded chain in the unloaded section, and the conveyor chain in the scraper chain is hidden under the shield of the load-bearing chain in the loaded section. This prevents medical waste from coming into contact with the chains and entering the scraper conveyor smoothly. Furthermore, medical waste is transported within the U-shaped trough, away from the chains, preventing them from becoming entangled. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and examples:

[0028] Figure 1 It is a simplified diagram of the present invention.

[0029] Figure 2 It is the front view of the head in the present invention.

[0030] Figure 3 It is a cross-sectional view of the head in the present invention.

[0031] Figure 4 It is a top view of the head in the present invention.

[0032] Figure 5 It is the main view of the middle section of the drain in the present invention.

[0033] Figure 6 for Figure 5 Cross-sectional view at point A.

[0034] Figure 7 It is a cross-sectional view of the middle section of the U-shaped trough body in the present invention.

[0035] Figure 8 It is a top view of the U-shaped groove bottom liner in the present invention.

[0036] Figure 9 It is the front view of the scraper chain in the present invention.

[0037] Figure 10 It is a left view of the scraper chain in the present invention.

[0038] Figure 11 It is a top view of the scraper chain in the present invention.

[0039] Figure 12It is a schematic diagram of the scraper chain and the draining middle section in the present invention.

[0040] Figure 13 It is the main view of the feeding section in the present invention.

[0041] Figure 14 for Figure 13 Cross-sectional view at point B.

[0042] Figure 15 This is a schematic diagram of the first working state of the material limiting device in the present invention.

[0043] Figure 16 This is a schematic diagram of the second working state of the material limiting device in the present invention.

[0044] Figure 17 It is the front view of the tail in the present invention.

[0045] Figure 18 for Figure 17 Cross-sectional view at point C in the middle.

[0046] Figure 19 It is a top view of the tail portion of the present invention.

[0047] Figure 20 It is a connection diagram of the drain pipe joint in the present invention. DETAILED DESCRIPTION

[0048] like Figure 1 As shown, a medical waste buried scraper conveyor device and method includes a head 1, a drive unit 2, a drainage middle section 3, a scraper chain 4, a feeding section 5 and a tail 6.

[0049] like Figure 2-4 As shown, the head 1 comprises a head housing, which is composed of a head end cover assembly 1.1, a head cover assembly 1.2, and head side panels 1.13. The head side panels 1.13 are manufactured in pairs, one on each side. The head end cover assembly 1.1 is mounted to the front end of the head side panels 1.13 via head connectors 1.12. The head cover assembly 1.2 is mounted to the upper end of the head side panels 1.13 via head connectors 1.12.

[0050] like Figure 2-4 As shown, a U-shaped head trough 1.11 is mounted on the lower right end of the head housing. This head trough 1.11 is attached to a head side panel 1.13 via a head connector 1.12. Three sides of the head U-shaped head trough 1.11 are made of PE plastic. The wear resistance of the plastic is similar to that of NM400 and the corrosion resistance is similar to that of SUS304.

[0051] like Figure 2-4As shown, a head discharge port 1.16 is provided at the lower left end of the head housing. The width of head discharge port 1.16 is no less than the width of the trough of the medical waste scraper conveyor, while the width of the head U-shaped trough 1.11 is less than the width of the trough of the medical waste scraper conveyor. Consequently, driven by the scraper chain 4, medical waste is conveyed from right to left within the head U-shaped trough 1.11 to be discharged at head discharge port 1.16. The squeezed medical waste conveying channel widens, and the release of material ensures normal discharge of medical waste.

[0052] like Figure 3-4 As shown, the left and right internal dustproof bearing assemblies 1.5 and 1.8 are directly mounted on the left and right exterior sides of the head side panels 1.13 via the head connector 1.12. A support plate assembly 1.14 is fixedly welded to the head side panels 1.13 outside the left and right internal dustproof bearing assemblies 1.5 and 1.8. The left and right external bearing assemblies 1.4 and 1.9 are correspondingly mounted on the two support plate assemblies 1.14 via the head connector 1.12.

[0053] The left head shaft 1.3 is fixed by the left internal dustproof bearing assembly 1.5 and the left external bearing assembly 1.4. The other end of the left head shaft 1.3 extending into the head shell is installed with the left head wheel 1.6.

[0054] The right head shaft 1.10 is fixed by the right internal dustproof bearing assembly 1.8 and the right external bearing assembly 1.9. The other end of the right head shaft 1.10 extends into the part of the head shell to install the right head wheel 1.7.

[0055] The left head shaft 1.3 and the right head shaft 1.10 are both independent structures and do not interfere with each other. The crushed medical waste has a particle size of 30-50mm, but has strong winding properties and is very easy to form a ball and entangle on the head shaft. In severe cases, the head shaft will be entangled into a large roller. By setting up an independent left head shaft 1.3 and a right head shaft 1.10, and disconnecting the two, the middle area where the scraper chain 4 passes is left vacant, and the medical waste does not come into contact with the head shaft, and there is no chance of it being entangled with the head shaft.

[0056] Preferably, a chain-removing blade 1.15 is positioned in the upper right portion of the head housing. The blades 1.15 are manufactured in pairs, one on each side, and welded to the inside of the corresponding head side panel 1.13. The front end of the chain-removing blade 1.15 is curved and positioned close to the left or right head pulley 1.6 or 1.7, ensuring smooth removal of the scraper chain 5 from the left or right head pulley 1.6 or 1.7.

[0057] The unloaded chain on the return trip is loose and has no tension. If there is no chain-breaking knife to force the chain off, the chain will automatically detach from the head wheel. In this case, the chain will arch into a ball and scrape over the unloaded chain support device.

[0058] like Figure 1 As shown, the drive unit 2 comprises a PLC intelligent control system and an independent drive system (motor + chain conveyor). The PLC intelligent control system changes the operating speed of the equipment by modifying the frequency of the inverter, thereby automatically adjusting the conveying capacity of the device. In the event of a fault such as motor overload or excessive reducer oil temperature, an audible and visual alarm will activate, and the PLC system will automatically shut down after a delay. When the audible and visual alarm is deactivated, the PLC system will automatically restart. The operating speed of the device cannot exceed 12 m / min. If this speed is exceeded, an audible and visual alarm will activate, and the PLC intelligent control system will automatically shut down.

[0059] like Figure 5-6 、 Figure 20 As shown, the shell of the drain intermediate section 3 is composed of two parts, the upper shell including side panels 3.3, one on each side, and the upper end of which is assembled through a connector 3.2 and a cover plate 3.1. The cover plate 3.1 is made of stainless steel. The lower shell includes a middle section U-shaped trough 3.10, the lower bottom plate of which is provided with a sewage seepage hole, and the lower part of the middle section U-shaped trough 3.10 is connected to the drain trough 3.9 at the lower part of the middle section U-shaped trough 3.10 through the sewage seepage hole. The drain intermediate section 3 is installed at an angle, and a drain pipe joint 3.4 is connected to the lower end of the drain trough 3.9. The drain pipe joints 3.4 of different drain intermediate sections 3 are all connected to the sewage collection pipe 3.4.1 through a branch pipe. The sewage in the medical waste seeps through the middle section of the U-shaped trough 3.10, enters the drain trough 3.9, and then flows out through the drain pipe joint 3.4 and flows into the main sewage pipe 3.4.1 next to the medical waste buried scraper conveyor.

[0060] like Figure 7 Specifically, the intermediate U-shaped trough 3.10 includes U-shaped trough side panels 3.10.2, which are manufactured in pairs and welded to the U-shaped trough bottom panel 3.10.4 to form the U-shaped trough. End flanges 3.10.1 are welded to the front and rear ends of the intermediate U-shaped trough 3.10 to connect different intermediate U-shaped troughs 3.10.

[0061] like Figure 7-8As shown, in addition, a U-shaped trough side liner 3.10.3 and a U-shaped trough bottom liner 3.10.6 are provided in the middle section of the U-shaped trough body 3.10, wherein the U-shaped trough side liner 3.10.3 is a plastic plate made of PE and is made in pairs. The U-shaped trough side liner 3.10.3 is assembled on both sides of the U-shaped trough side plate 3.10.2 through the trough body connector 3.10.5. The U-shaped trough bottom liner 3.10.6 is a plastic plate made of PE. The U-shaped trough bottom liner 3.10.6 is assembled on the U-shaped trough bottom plate 3.10.4 through the trough body connector 3.10.5. Both the U-shaped trough bottom liner 3.10.6 and the U-shaped trough bottom plate 3.10.4 are processed with waist-shaped holes for sewage seepage, and the waist-shaped holes are arranged in a rectangular array. The waist-shaped holes serve as sewage seepage holes to facilitate the seepage of sewage in medical waste.

[0062] like Figure 6 Specifically, an unloaded section guide rail 3.6 and a loaded section guide rail 3.8 are provided within the upper housing. The unloaded section guide rail 3.6 is made of NM400 and is welded to the side panel 3.3 in a symmetrical arrangement. The loaded section guide rail 3.8 is also made of NM400 and is welded to the side panel 3.3 in a symmetrical arrangement.

[0063] like Figure 6 As shown, an idle chain shield 3.5 is welded to the side panel 3.3 above the idle section guide rail 3.6, near the cover plate 3.1. The idle chain shield 3.5 has a triangular cross-section and is symmetrically arranged. During the idle section of the return stroke, the chain of the scraper chain 4 is effectively hidden under the idle chain shield 3.5, preventing medical waste from coming into contact with the chain and thus becoming entangled.

[0064] like Figure 6 As shown, a load-carrying chain shield 3.7 is welded to the side panel 3.3 above the load-carrying section guide rail 3.8. This shield has a rectangular cross-section and is symmetrically arranged to support the bottom of the unloaded section guide rail 3.6. In the load-carrying section, the chain of the scraper chain 4 is effectively hidden beneath the load-carrying chain shield 3.7. Medical waste is transported in the intermediate U-shaped trough 3.10, away from the chain and thus prevented from becoming entangled.

[0065] like Figure 9-12As shown, the scraper chain 4 includes a conveyor chain 4.1, a scraper connector 4.2, a connecting support plate 4.3 and a scraper 4.4. Among them, the conveyor chain 4.1 is a "side double chain", that is, there are two chains, and they are arranged on the left and right sides. The "side double chains" on the left and right sides are basically a bent plate chain, which has an automatic centering function. The pitch of the conveyor chain 4.1 is imperial size, and the large roller structure means that the roller diameter is 20mm greater than the chain plate height. The left and right ends of the connecting support plate 4.3 are respectively connected to the conveyor chain 4.1 through the scraper connector 4.2, thereby forming a highly stable frame structure. The scraper 4.4 is a block-shaped solid scraper, and its outward arrangement subverts the traditional design concept. The scraper 4.4 is made of white non-metallic material: polymer polyethylene plate, referred to as PE plate.

[0066] like Figure 13-14 As shown, the feeding section 5 includes a feeding section housing 5.1. The structure of the feeding section housing 5.1 is identical to that of the draining intermediate section 3. A feeding port 5.2 is provided at the upper end of the feeding section housing 5.1. The feeding port 5.2 is welded to the cover plate 3.1 of the feeding section housing 5.1. The width C of the feeding port 5.2 is much smaller than the machine slot width B. This ensures that medical waste falls within the width C and does not fall on the chain, preventing it from becoming entangled in the chain.

[0067] like Figure 13-14 As shown, a limiting device 5.3 is installed on one side of the feeding port 5.2. This device comprises a sealing cover 5.3.7, the bottom of which is welded to the cover plate of the feeding section housing 5.1. A nut 5.3.3 is rotatably mounted on the upper end of the sealing cover 5.3.7 via a base 5.3.9. A lifting screw 5.3.8 is threadedly connected to the nut 5.3.3. Nut 5.3.3 is provided with gear teeth on its outer side, which mesh with a driving gear 5.3.1. The driving gear 5.3.1 is driven by a servo motor 5.3.2.

[0068] A pair of spaced-apart clamping plates 5.3.4 are welded to the bottom of the lifting screw 5.3.8. The clamping plates 5.3.4 extend along the width of the medical waste scraper conveyor. The material limiting cleaning plate 5.3.6 is installed between the two clamping plates 5.3.4 through the cleaning plate fixing connector 5.3.5.

[0069] The material of the limited material cleaning plate 5.3.6 is silicone. Silicone is strong, tough, and elastic. Every time the scraper passes over it, it comes into contact with the cleaning plate. Due to the properties of silicone, it is not easy to break.

[0070] like Figure 15As shown, the forward rotation of servo motor 5.3.2 drives driving gear 5.3.1, which in turn rotates nut 5.3.3 meshing with driving gear 5.3.1, thereby moving lifting screw 5.3.8 downward. The material limiting and cleaning plate 5.3.6 at the lower end of lifting screw 5.3.8 moves linearly downward to its lowest point. At this point, scraper 4.4 partially overlaps with material limiting and cleaning plate 5.3.6, forcibly removing any medical waste adhering to scraper 4.4.

[0071] like Figure 16 As shown, servo motor 5.3.2 rotates in reverse, driving gear 5.3.1. This in turn rotates nut 5.3.3, which meshes with driving gear 5.3.1, causing lifting screw 5.3.8 to move upward. The material limiting and cleaning plate 5.3.6 at the lower end of lifting screw 5.3.8 moves linearly upward to its uppermost position. At this point, the gap between scraper 4.4 and material limiting and cleaning plate 5.3.6 is zero, and medical waste that exceeds the height of scraper 4.4 is forcibly removed.

[0072] like Figure 17-19 As shown, the tail section 6 comprises a tail housing 6.3, the rear end of which is assembled with a tail end cover 6.2 via a tail connector 6.13. A tail U-shaped trough 6.14 is assembled at the lower end of the tail housing 6.3 via the tail connector 6.13. The three sides of the tail U-shaped trough 6.14 are made of PE plastic. The wear resistance of the plastic is similar to that of NM400 and the corrosion resistance is similar to that of SUS304.

[0073] like Figure 17 As shown, the tail end cover plate 6.2 is threadedly connected with an adjusting screw 6.1, and the other end of the adjusting screw 6.1 is rotatably connected to the arc baffle 6.4. The adjusting screw 6.1 is used to adjust the arc baffle 6.4 to move back and forth at the bottom end of the tail housing 6.3.

[0074] When the chain is tightened, the tail wheel moves toward the head. This increases the space between the tail wheel and the tail end cover, making it more likely for material to accumulate. At this point, adjust the curved baffle 6.4 to move it toward the head. This maintains the space between the tail wheel and the tail end cover, preventing material from accumulating.

[0075] like Figure 18 As shown, the left and right bearing assemblies 6.5 and 6.9 are mounted on the left and right sides of the tail housing 6.3. The left bearing assembly 6.5 is mounted to the left end of the tail housing 6.3 via a tail connector 6.13. The bearings in the left bearing assembly 6.5 are used in pairs. The right bearing assembly 6.9 is mounted to the right end of the tail housing 6.3 via a tail connector 6.13. The bearings in the right bearing assembly 6.9 are used in pairs.

[0076] like Figure 18As shown, one end of the left tail shaft 6.6 is assembled via the left bearing assembly 6.5, and the other end extends into the tail housing 6.3, where the left tail wheel 6.7 is cantilevered. A left roller 6.8 is mounted on the outside of the left tail wheel 6.7 via a tail connector 6.13. One end of the right tail shaft 6.11 is assembled via the right bearing assembly 6.9, and the other end extends into the tail housing 6.3, where the right tail wheel 6.10 is cantilevered. The right tail wheel 6.10 is assembled with a right roller 6.12 via a tail connector 6.13. The left and right tail shafts 6.6 and 6.11 operate independently and do not interfere with each other. The left and right rollers 6.8 and 6.12 operate independently and do not interfere with each other. The teeth of the left and right tail wheels 6.7 and 6.10 protrude from either the left or right roller 6.8 or 6.12.

[0077] like Figure 19 As shown, the left tail wheel 6.7 is adjusted forward and backward by the left screw tensioning mechanism 6.15, thereby tightening or loosening the left scraper chain. The right tail wheel 6.10 is adjusted forward and backward by the right screw tensioning mechanism 6.16, thereby tightening or loosening the right scraper chain. The left screw tensioning mechanism 6.15 and the right screw tensioning mechanism 6.16 are used independently and do not interfere with each other.

Claims

1. A medical waste buried scraper conveyor device, characterized by: It includes a head (1), a draining middle section (3), a scraper chain (4), a feeding section (5) and a tail (6); The head (1) comprises a left head shaft (1.3) and a right head shaft (1.10); one end of the left head shaft (1.3) is fixed by a left internal dustproof bearing assembly (1.5) and a left external bearing assembly (1.4); the other end of the left head shaft (1.3) extends into the head shell to install a left head wheel (1.6); one end of the right head shaft (1.10) is fixed by a right internal dustproof bearing assembly (1.8) and a right external bearing assembly (1.9); the other end of the right head shaft (1.10) extends into the head shell to install a right head wheel (1.7); The draining middle section (3) comprises a middle section shell, an unloaded section guide rail (3.6) and a loaded section guide rail (3.8) are provided on the upper portion of the middle section shell, an unloaded chain shield (3.5) is provided directly above the unloaded section guide rail (3.6), and a loaded chain shield (3.7) is provided directly above the loaded section guide rail (3.8); a middle section U-shaped trough (3.10) is provided on the lower portion of the middle section shell, and the middle section U-shaped trough (3.10) is connected to the drain trough (3.9) through a sewage seepage hole; The feeding section (5) includes a feeding section shell (5.1), and the feeding section shell (5.1) has the same structure as the shell of the draining middle section (3); in addition, a feeding port (5.2) and a material limiting device (5.3) are provided at the upper end of the feeding section (5); wherein the material limiting device (5.3) cleans the scraper (4.4) or cleans and limits the medical waste that exceeds the height of the scraper (4.4); The tail (6) comprises a left tail shaft (6.6) and a right tail shaft (6.11), which are mounted on both sides of the tail housing (6.3) and are independent of each other; a left tail wheel (6.7) is mounted on the left tail shaft (6.6), and a left roller (6.8) is mounted on the left tail wheel (6.7); a right tail wheel (6.10) is mounted on the right tail shaft (6.11), and a right roller (6.12) is mounted on the right tail wheel (6.10), and the teeth of the left tail wheel (6.7) and the right tail wheel (6.10) are partially exposed.

2. A medical waste buried scraper conveyor device according to claim 1, characterized in that: A pair of chain-off knives (1.15) are installed in the upper right corner of the head shell, and one end of the chain-off knives (1.15) is bent downward and points to the left head wheel (1.6) or the right head wheel (1.7).

3. A medical waste buried scraper conveyor device according to claim 1, characterized in that: The drain middle section (3) is arranged at an angle, and a drain pipe joint (3.4) is installed at the lower end of the corresponding drain trough (3.9). The drain pipe joints (3.4) of the plurality of drain middle sections (3) are connected to the main sewage pipe (3.4.1) through branch pipes.

4. A medical waste buried scraper conveyor device according to claim 1, characterized in that: The material limiting device (5.3) includes a sealing cover (5.3.7), the lower end of the sealing cover (5.3.7) is welded to the feeding section shell (5.1), a lifting screw (5.3.8) is provided on the sealing cover (5.3.7), the upper end of the lifting screw (5.3.8) is threadedly connected to the nut (5.3.3), and a material limiting cleaning plate (5.3.6) is installed at the lower end of the lifting screw (5.3.8).

5. A medical waste buried scraper conveyor device according to claim 4, characterized in that: The material limit cleaning plate (5.3.6) is made of silica gel.

6. A medical waste buried scraper conveyor device according to claim 1, characterized in that: Both sides and the bottom of the bearing cavity in the middle drainage section (3) and the lower portion of the feeding section (5) are lined with lining plates, and the lining plates are made of PE.

7. A method for transporting medical waste using a medical waste buried scraper conveyor device according to any one of claims 1 to 6, characterized in that: The head shaft is broken into a left head shaft (1.3) and a right head shaft (1.10), and the left head shaft (1.3) and the right head shaft (1.10) are set as a cantilever structure, and are assembled using a bearing assembly outside the head shell to prevent medical waste from contacting the head shaft; the left tail shaft (6.6) and the right tail shaft (6.11) are set separately and independently, and rollers are installed on the corresponding tail wheels to prevent medical waste from winding around the tail shafts; the width of the bearing cavity of the draining middle section (3) and the feeding section (5) is set to a U-shaped trough body smaller than the width of the machine trough, the width of the feeding port of the feeding section (5) is set to be smaller than the width of the machine trough, and a shield is arranged above the corresponding guide rail to prevent medical waste from winding around the chain.

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