Medical waste needle head treatment device

Abstract

The invention discloses a medical waste needle head treatment device which comprises a treatment box, a rotating cylinder, a crucible and a collecting pool, the rotating cylinder, the crucible and the collecting pool are located in the treatment box, symmetrically-distributed grooves are formed in the rotating cylinder, and a first stand column and a second stand column are distributed, welded and fixed in the two grooves; the back wall bodies of the first stand column and the second stand column communicate with a first rotating roller and a second rotating roller correspondingly, the first rotating roller and the second rotating roller both penetrate through the wall body of the treatment box, and one end of the first rotating roller is connected with a liquid nitrogen inlet pipe and a first communicating pipe through a tee joint; and one end of the second rotating roller is connected with an exhaust pipe through a movable joint. According to the medical waste needle head treatment device, due to the fact that the rotating cylinder continuously turns over, a needle head can continuously fall onto the inner wall of the rotating cylinder in the falling process, due to the fact that a frozen pintle becomes fragile, the pintle can be automatically broken after multiple times of falling, and therefore the pintle is separated from a needle stem, and follow-up melting operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a device for processing discarded medical needles. Background Art

[0002] With the development of medical technology and the widespread use of disposable medical devices, especially the popularity of disposable syringes, the treatment of discarded medical needles has become an important issue in medical waste management. Needles, as a high-risk waste, not only contain potential infectious pathogens, but also have the risk of stabbing and cutting the human body. Therefore, the treatment of discarded needles must be safe and efficient to avoid harm to the environment and personnel. However, the existing discarded needle treatment technology and equipment still have the following deficiencies in practical applications:

[0003] Difficulty in handling multi-material structures: Discarded needles are usually composed of stainless steel stems and plastic plugs. The melting point of the stem is as high as about 1400°C, while the plastic plug is easily thermally decomposed at high temperatures, producing harmful gases and impurities. In the prior art, when high-temperature melting is used to treat needles, the decomposition products of the plastic plug not only pollute the interior of the equipment, increasing the difficulty of cleaning and maintenance, but may also affect subsequent melting operations, resulting in low processing efficiency.

[0004] Inefficiency due to unreasonable equipment design: Most existing needle treatment equipment adopts a single-chamber design, combining disinfection and melting operations. However, after high-temperature melting, the temperature inside the chamber is extremely high, and it is difficult for the disinfectant to maintain its effectiveness for a long time, resulting in an incomplete disinfection process. At the same time, such equipment often needs to be cooled frequently before it can be disinfected again, resulting in a significant reduction in operating efficiency. In addition, the equipment is prone to accumulate residues during the processing process, further reducing the equipment's working efficiency and processing capacity.

[0005] Environmental impact and safety hazards: For the treatment of discarded needles, it is difficult for existing equipment to effectively control the generation of pollutants during the treatment process, especially at high temperatures, the decomposition products of plastic needle plugs are easy to volatilize, forming toxic gases and polluting the environment. At the same time, these harmful gases may threaten the health of operators, increasing the difficulty of environmental protection and operational safety. Therefore, the existing technology has obvious defects in the treatment of medical needles, and it is urgent to improve the structure and process to improve the treatment effect and operating efficiency of the equipment, reduce the generation of pollutants, and ensure the safe and environmentally friendly treatment of discarded medical devices. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0007] Therefore, the object of the present invention is to provide a medical waste needle disposal device, comprising a disposal box, and a rotating cylinder, a crucible and a collecting pool located in the disposal box.

[0008] The rotating drum is provided with symmetrically distributed grooves, and the first column and the second column are welded and fixed in the two grooves. The back walls of the first column and the second column are connected with the first rotating roller and the second rotating roller respectively, and the first rotating roller and the second rotating roller both penetrate the wall of the processing box.

[0009] One end of the first rotating roller is connected to a liquid nitrogen inlet pipe and a first connecting pipe through a tee, and one end of the second rotating roller is connected to an exhaust pipe through a movable joint.

[0010] A discharge port is provided at the bottom of the rotating cylinder, a top cover is threadedly connected to the top of the rotating cylinder, and a solenoid valve is provided at the discharge port;

[0011] The front and rear side walls of the treatment box are both provided with open grooves, and sliding plates are arranged in the open grooves. The two sliding plates are fixed by welding through guide rods, and screw rods connected to the bearings thereof are passed through the two sliding plates.

[0012] Rotating columns connected to the sliding plate bearings are arranged on both sides of the crucible, and an induction heating coil is sleeved on the rotating column on one side of the crucible, and the induction heating coil is fixed on the movable plate.

[0013] The guide rod passes through the movable plate and is slidably connected to the movable plate, and the screw rod passes through the movable plate and is threadedly connected to the movable plate.

[0014] A heat-conducting coil for heat exchange is arranged in the collecting pool, and the heat-conducting coil is used to generate steam and pass it into the first connecting pipe.

[0015] As the preferred technical solution:

[0016] In the above-mentioned medical waste needle disposal device, the disposal box is L-shaped as a whole, the top of the disposal box is open, and the wall of the disposal box on one side of the collection pool is open;

[0017] The rotating cylinder is located at the top of the vertical part of the processing box, and the collecting pool and the crucible are located at one side of the horizontal part of the processing box.

[0018] Through the above technical solution, the position design of the rotating cylinder, the collecting pool and the crucible makes the overall layout more reasonable, so that there is a space under the rotating cylinder, thereby ensuring that the rotating cylinder will not collide with the collecting pool and the crucible when it is turned upside down, thereby ensuring that the equipment can operate normally.

[0019] In the medical waste needle disposal device as described above, the first column and the second column are both hollow structures, the first column and the second column are both vertical, and the first column and the second column have evenly distributed through holes on opposite sides.

[0020] Through the above technical solution, the structural design of the first column and the second column ensures that when liquid nitrogen or steam enters the interior of the first column, it will be evenly sprayed out from the through hole on one side of the first column, and then the interior of the rotating cylinder can be covered, thereby ensuring the disinfection and freezing effect of the needle. In addition, the negative pressure generated by the air suction of the second column can generate negative pressure near the through hole on one side of the second column, which can absorb the broken plastic particles, thereby achieving the separation of the needle stem and the needle plug.

[0021] In the above-mentioned medical waste needle disposal device, the first rotating roller and the second rotating roller are both hollow tubes, the first rotating roller is connected to the disposal box by welding, and the second rotating roller is movably connected to the disposal box by bearings.

[0022] The first rotating roller is movably connected to the rotating cylinder and the first column by bearings, and the second rotating roller is movably connected to the rotating cylinder and the first column by welding.

[0023] Through the above technical scheme, the first rotating roller and the second rotating roller share the same axis, and the first rotating roller and the second rotating roller act as a rotating axis, which can not only support the rotating drum, but also allow the rotating drum to flip around the rotating axis. An electric motor is bolted to the outer wall of the processing box, and the motor is connected to the second rotating roller through a gear transmission. When the motor is powered on, the motor can drive the rotating drum to flip up and down through the second rotating roller.

[0024] In the above-mentioned medical waste needle disposal device, a vertical plate is welded and fixed to the outer wall of the bottom end of the rotating cylinder, a sliding rod slidably connected to the vertical plate passes through the vertical plate, and a fixing rod is welded and fixed to the inner wall of the disposal box.

[0025] A first conductive metal sheet is fixedly bonded to the sliding rod, and the first conductive metal sheet is connected to a solenoid valve via a wire. A second conductive metal sheet is fixedly bonded to the fixed rod, and the second conductive metal sheet is connected to an external power grid via a wire.

[0026] Through the above technical solution, the first conductive metal sheet and the second conductive metal sheet are positioned relative to each other, that is, the first conductive metal sheet can be fitted with the second conductive metal sheet by horizontal movement. When the first conductive metal sheet and the second conductive metal sheet are in contact, the solenoid valve can be connected to the circuit. The solenoid valve is specifically an electromagnetic butterfly valve. When the solenoid valve is energized, the electromagnetic coil generates electromagnetic force, which will attract or push the butterfly plate, thereby controlling the opening of the discharge port. When the solenoid valve is de-energized, the electromagnetic force disappears, and the butterfly plate will return to the initial position, thereby controlling the closing of the discharge port.

[0027] In the medical waste needle disposal device as described above, a connecting plate is welded between the two sliding plates, an L-shaped push plate is welded and fixed to the side of the connecting plate, T-shaped sliding rails are welded to the top and bottom ends of the sliding plate, and a sliding groove that is compatible with the sliding rail is opened on the groove wall of the open groove.

[0028] Through the above technical solution, the sliding rail and the sliding groove are both in the shape of long strips, and the sliding rail can slide linearly along the sliding groove, so that the sliding plate can be prevented from falling off from the open groove while sliding in the open groove.

[0029] In the medical waste needle disposal device as described above, the push plate, the sliding rod and the fixed rod are on the same horizontal plane, the push plate, the sliding rod and the fixed rod are all L-shaped structures, and the sliding rod has a square cross section.

[0030] A limiting plate is welded and fixed to one end surface of the horizontal portion of the sliding rod, a spring is sleeved on the sliding rod between the limiting plate and the vertical plate, and both ends of the spring are welded and fixed to the limiting plate and the vertical plate.

[0031] Through the above technical solution, the positions of the push plate, the sliding rod and the fixed rod are designed so that the push plate can contact the sliding rod when moving horizontally, thereby pushing the sliding rod to move horizontally on the vertical plate.

[0032] In the medical waste needle disposal device as described above, the crucible is a square pool body, the induction heating coil and the rotating column are coaxial, and the inner diameter of the induction heating coil is greater than the height and width of the crucible.

[0033] Through the above technical solution, the size design of the induction heating coil ensures that the induction heating coil will not collide with the crucible when moving in a straight line, and will be moved around the periphery of the crucible to heat and melt the needle stems in the crucible.

[0034] A medical waste needle disposal device as described above, wherein the collection pool is enclosed and welded by a bottom plate, a side plate and an end plate, the bottom plate is fixed to the inner wall of the bottom end of the disposal box, the bottom plate extends vertically upward to form a plurality of grooves, and the side plate begins to have a plurality of slots matching the grooves;

[0035] The heat-conducting coil extends into the groove and is welded to the bottom plate at the groove. One end of the heat-conducting coil is connected to the water inlet pipe through a water distributor. The heat-conducting coil is welded to a connecting column with a hollow structure.

[0036] Through the above technical solution, the design of multiple grooves can increase the surface area of ​​the bottom plate. When the molten metal liquid is introduced into the collection pool, the contact area between the bottom plate and the metal liquid is large, thereby improving the heat exchange effect.

[0037] In the above-mentioned medical waste needle disposal device, a steam booster pump is arranged inside the disposal box, and the inlet end of the steam booster pump is connected to the connecting column by welding. The outlet end of the steam booster pump is flange-connected to a second connecting pipe, and the second connecting pipe is respectively connected to the steam inlet pipe and the first connecting pipe through a tee.

[0038] Through the above technical solution, the water inside the heat transfer coil will turn into steam after being heated. After the steam enters the steam booster pump, the steam booster pump can increase the pressure of the steam flow, thereby realizing high-pressure and high-temperature steam disinfection operations.

[0039] Compared with the prior art, the present invention has at least the following beneficial effects:

[0040] (1) The present invention designs the upside-down flipping movement of the rotating cylinder so that the discarded medical needles can fall freely in the cylinder. The needles collide with the inner wall of the rotating cylinder multiple times during the falling process. This design uses liquid nitrogen to quickly freeze the needles, making the needle plugs very fragile after freezing. After multiple drops, they break and separate from the needle stem. This mechanized falling separation method not only reduces the complexity of manual operation, but also avoids the potential safety hazards caused by manual operation or incomplete processing in traditional processing methods, significantly improving the processing efficiency and safety of the equipment.

[0041] (2) Through the combination of freezing and dropping, the present invention effectively achieves the separation of the needle plug and the needle stem. The needle plug is made of plastic and becomes brittle after being frozen with liquid nitrogen, while the needle stem is made of stainless steel and still maintains its shape. During the turning and dropping of the rotating drum, the brittle needle plug is constantly broken and naturally separated from the needle stem, ultimately ensuring the complete separation of plastic and metal. This process greatly improves the separation efficiency, ensures that the subsequent melting treatment of the needle stem is smoother, and also reduces unnecessary sorting procedures.

[0042] (3) The design of this device separates the two steps of disinfection and melting, which are carried out in a rotating cylinder and a crucible respectively, without interfering with each other. The needle is first sterilized by high-temperature steam in the rotating cylinder, and then the needle plug and the needle stem are separated by liquid nitrogen freezing. Finally, the needle stem falls into the crucible for melting treatment. The separate design of disinfection and melting operations not only improves the efficiency of each operation, but also avoids the operational inconvenience caused by the mixing of disinfectant and molten material in the prior art. At the same time, this multi-task parallel design allows the equipment to work continuously, greatly reducing the processing time, and is particularly suitable for the centralized processing of a large number of discarded medical needles.

[0043] (4) The present invention adopts a compact and modular structural design, and the reasonable layout of the rotating cylinder, crucible and collection pool ensures high efficiency and stability during the operation of the equipment. The interior of the rotating cylinder is provided with columns and rotating rollers, which can stably support the flipping movement of the rotating cylinder and ensure that the needle maintains an effective motion state during the disinfection and freezing process. The crucible realizes the melting operation of the needle stem through the design of sliding plates and rotating columns, and improves the cooling and recovery efficiency of the molten metal through the heating coil. In addition, the movable design of the crucible makes it easy for the operator to handle the molten metal in time, making the overall operation more convenient, reducing the maintenance workload, and improving the operability and service life of the equipment.

[0044] (5) Energy saving and environmental protection, improved resource utilization: The heat-conducting coils installed in this device realize efficient use of energy. The high-temperature molten metal generated during the melting process heats the water flow through the coil to form steam, which is then pressurized by a steam booster pump and used for disinfection operations, reducing the equipment's dependence on external steam sources and realizing the recycling of resources. At the same time, multiple heat-conducting coils increase the surface area in contact with the molten metal, enhance the heat exchange effect, and accelerate the cooling process of the molten metal, which not only improves the recovery efficiency, but also reduces the energy consumption of the equipment, achieving energy-saving and environmental protection effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which

[0046] Figure 1 It is an internal front view of the present invention;

[0047] Figure 2 is an internal side view of the present invention;

[0048] Figure 3 It is a cross-sectional view of the rotating drum of the present invention;

[0049] Figure 4 It is a top view of the interior of the rotating drum of the present invention;

[0050] Figure 5 It is an external front view of the present invention;

[0051] Figure 6 A three-dimensional diagram of a sliding plate and a crucible of the present invention;

[0052] Figure 7 A three-dimensional diagram of the bottom plate, side plate and end plate of the present invention;

[0053] Figure 8 It is a stereoscopic diagram of the sliding rod and the fixed rod of the present invention.

[0054] In the figure: 1, processing box; 2, rotating cylinder; 3, top cover; 4, discharge port; 5, first column; 6, second column; 7, first rotating roller; 8, second rotating roller; 9, liquid nitrogen inlet pipe; 10, first connecting pipe; 11, steam inlet pipe; 12, exhaust pipe; 13, open slot; 14, sliding plate; 15, crucible; 16, rotating column; 17, movable plate; 18, induction heating coil; 19, guide rod; 20, screw rod; 21. Sliding rail; 22. Push plate; 23. Solenoid valve; 24. Vertical plate; 25. Sliding rod; 26. Fixed rod; 27. First conductive metal sheet; 28. Second conductive metal sheet; 29. ​​Spring; 30. Limiting plate; 31. Second connecting pipe; 32. Steam booster pump; 33. Bottom plate; 34. Groove; 35. Side plate; 36. End plate; 37. Slot; 38. Heat transfer coil; 39. Connecting column; 40. Connecting plate. DETAILED DESCRIPTION

[0055] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0056] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0057] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the embodiment of the present invention discloses a medical waste needle treatment device, including a treatment box 1, and a rotating cylinder 2, a crucible 15 and a collection pool located in the treatment box 1, the rotating cylinder 2 is provided with symmetrically distributed grooves, and the first column 5 and the second column 6 are distributed and welded and fixed in the two grooves, the first column 5 and the second column 6 are both hollow structures, the first column 5 and the second column 6 are both vertical, and the first column 5 and the second column 6 are provided with evenly distributed through holes on the opposite sides, and the back walls of the first column 5 and the second column 6 are respectively connected to the first rotating roller 7 and the second rotating roller 8, and the first rotating roller 7 and the second rotating roller 8 are penetrated The wall of the processing box 1, one end of the first rotating roller 7 is connected to the liquid nitrogen inlet pipe 9 and the first connecting pipe 10 respectively through a tee, one end of the second rotating roller 8 is connected to the exhaust pipe 12 through a movable joint, the first rotating roller 7 and the second rotating roller 8 are both hollow tubular, the first rotating roller 7 is welded to the processing box 1, the second rotating roller 8 is movably connected to the processing box 1 by bearings, the first rotating roller 7 is movably connected to the rotating cylinder 2 and the first column 5 by bearings, the second rotating roller 8 is welded to the rotating cylinder 2 and the first column 5, a discharge port 4 is provided at the bottom of the rotating cylinder 2, a top cover 3 is threadedly connected to the top of the rotating cylinder 2, and a solenoid valve 23 is provided at the discharge port 4.

[0058] During operation, the needles to be treated can be put into the rotating drum 2, and then the top cover 3 is screwed into and fixed on the rotating drum 2, so that the inside of the rotating drum 2 is in a closed state. When the rotating drum 2 is turned up and down 180 degrees by the first rotating roller 7 and the second rotating roller 8, the needles continuously make free fall motion inside the rotating drum 2. At this time, the steam in the first connecting pipe 10 passes through the first rotating roller 7 into the first column 5 and is ejected from the through hole on one side of the first column 5. The steam can contact the needles and complete the high-temperature disinfection.

[0059] After the disinfection is completed, one end of the liquid nitrogen inlet pipe 9 is connected to the liquid nitrogen tank, so that the liquid nitrogen passes through the liquid nitrogen inlet pipe 9 and the first rotating roller 7 into the first column 5, and is sprayed out from the through hole on one side of the first column 5. The liquid nitrogen can contact the needle head and complete the freezing operation. The frozen needle plug becomes very brittle and will continue to fall in the continuous free fall movement. The force generated by the fall will cause the frozen needle plug to break, and then the needle plug is separated from the needle stem.

[0060] After the freezing operation is completed, the rotating drum 2 continues to flip, and the exhaust pipe 12 is connected to the air inlet end of the fan. The fan can suck away the air at the through hole on one side of the second column 6 through the exhaust pipe 12 and the second rotating roller 8, thereby generating negative pressure suction near the through hole on one side of the second column 6. The broken plastic particles mixed with the needle stems continue to fall. Since the broken plastic particles are light in weight, they will be sucked into the second column 6 through the through hole under the action of negative pressure suction. The air outlet end of the fan is connected to a separator, and the fan sends the sucked plastic particles into the separator for separation, which is convenient for collecting the plastic particles and centralizing them for processing.

[0061] After separation, only the needle stems are left inside the rotating cylinder 2. At this time, the discharge port 4 is opened by the electromagnetic valve 23, and the needle stems fall into the crucible 15 through the discharge port 4 to complete the melting operation. The molten metal liquid is poured into the collection pool for centralized treatment.

[0062] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in the embodiment of the present invention, both the front and rear side walls of the processing box 1 are provided with an open groove 13, a sliding plate 14 is arranged in the open groove 13, the top and bottom ends of the sliding plate 14 are welded and connected with a T-shaped sliding rail 21, and a sliding groove adapted to the sliding rail 21 is opened on the groove wall of the open groove 13, and the two sliding plates 14 are welded and fixed by a guide rod 19, and the two sliding plates 14 are penetrated by a screw rod 20 connected to the bearing thereof.

[0063] The crucible 15 is a square pool body, the induction heating coil 18 and the rotating column 16 are coaxial, the inner diameter of the induction heating coil 18 is larger than the height and width of the crucible 15, and rotating columns 16 connected to the bearings of the sliding plate 14 are arranged on both sides of the crucible 15, and the rotating column 16 on one side of the crucible 15 is sleeved with an induction heating coil 18, the induction heating coil 18 is fixed on the movable plate 17, the guide rod 19 passes through the movable plate 17 and is slidably connected to the movable plate 17, and the screw rod 20 passes through the movable plate 17 and is threadedly connected to the movable plate 17.

[0064] Since the sliding plate 14 can slide linearly in the open groove 13 through the sliding groove and the sliding rail 21, when the two sliding plates 14 slide synchronously, manual or mechanical pushing can be adopted, such as power equipment such as an electric push rod, and the two sliding plates 14 can drive the crucible 15 to move synchronously through the rotating column 16 until the crucible 15 moves to the bottom of the rotating cylinder 2, so that the needle stem in the rotating cylinder 2 can fall into the inside of the crucible 15;

[0065] When the two sliding plates 14 move, the movable plate 17 is driven to move through a set of guide rods 19, and then the induction heating coil 18 moves synchronously. When the screw rod 20 starts to rotate under the drive of an external device, such as a motor, the screw rod 20 drives the movable plate 17 to move linearly along the guide rod 19. The screw rod 20 can drive the movable plate 17 to move linearly back and forth by rotating forward and reversely, and then the movable plate 17 can drive the induction heating coil 18 to move back and forth on the crucible 15, which can increase the heating range, thereby ensuring that the needle stems in the crucible 15 can be fully melted;

[0066] When melting is completed, the movable plate 17 drives the induction heating coil 18 to reset, and the sliding plate 14 drives the crucible 15 to reset through the rotating column 16. At this time, when the rotating column 16 starts to rotate under the drive of external equipment such as a motor, the crucible 15 can pour the molten metal liquid inside into the collection pool. After the metal liquid is cooled and formed, it is convenient for centralized treatment.

[0067] like Figure 1 , Figure 2 and Figure 7 As shown, in the embodiment of the present invention, a heat conducting coil 38 for heat exchange is arranged in the collection pool, and the heat conducting coil 38 is used to generate steam and pass into the first connecting pipe 10. The collection pool is enclosed and welded by a bottom plate 33, a side plate 35 and an end plate 36. The bottom plate 33 is fixed on the inner wall of the bottom end of the processing box 1. The bottom plate 33 extends vertically upward to form a plurality of grooves 34. The side plate 35 begins to have a plurality of slots 37 matching the grooves 34.

[0068] The heat conducting coil 38 extends into the groove 34 and is welded to the bottom plate 33 at the groove 34. One end of the heat conducting coil 38 is connected to the water inlet pipe through a water distributor. The heat conducting coil 38 is welded to a connecting column 39 with a hollow structure.

[0069] A steam booster pump 32 is provided inside the treatment box 1, and the inlet end of the steam booster pump 32 is welded and connected to the connecting column 39. The outlet end of the steam booster pump 32 is flange-connected to a second connecting pipe 31, and the second connecting pipe 31 is connected to the steam inlet pipe 11 and the first connecting pipe 10 through a tee.

[0070] A plurality of grooves 34 can divide the interior of the bottom plate 33, the side plate 35 and the end plate 36 into a plurality of accommodating chambers, so that when the molten metal liquid is poured into the collection pool, it will flow into each accommodating chamber, and the temperature of the metal liquid will be transferred to the wall of the bottom plate 33 at each accommodating chamber. At this time, the water inlet pipe is connected to the external pipe network, and the water flow is diverted to each heat transfer coil 38 through the water inlet pipe and the water distributor. The water flow will flow along the heat transfer coil 38, and the heat transfer coil 38 will contact the bottom plate 33, so that the heat on the bottom plate 33 will be transferred to the heat transfer coil 38, and the heat transfer coil 38 will transfer the heat to the water flow, and the water flow will form steam after being heated at high temperature. Finally, the steam enters the steam booster pump 32 through the connecting column 39, and the steam booster pump 32 pressurizes the steam and sends it to the first connecting pipe 10 through the second connecting pipe 31; thereby reducing the overall energy consumption and having an energy-saving effect.

[0071] When the equipment is just running, the melting operation has not yet been carried out, and steam cannot be generated in the heat transfer coil 38. At this time, the steam inlet pipe 11 can be connected to the steam generator, and the steam inlet pipe 11 and the first connecting pipe 10 can complete the steam delivery. When the melting operation is carried out, the second connecting pipe 31 and the first connecting pipe 10 can be switched to deliver steam;

[0072] Valves are provided on the liquid nitrogen inlet pipe 9, the first connecting pipe 10 and the exhaust pipe 12. When the steam in the first connecting pipe 10 is used for sterilization, the valves on the liquid nitrogen inlet pipe 9 and the exhaust pipe 12 can be closed to ensure that the steam can be completely sprayed into the interior of the rotating drum 2 and the rotating drum 2 can be kept in a closed state, thereby achieving high-pressure and high-temperature steam sterilization.

[0073] Meanwhile, when the liquid nitrogen freezing operation is performed, the valves of the first connecting pipe 10 and the exhaust pipe 12 may be closed to prevent the liquid nitrogen from entering the first connecting pipe 10 .

[0074] like Figure 1 , Figure 6 and Figure 8 As shown, in the embodiment of the present invention, a vertical plate 24 is welded and fixed to the outer wall of the bottom end of the rotating cylinder 2, and a sliding rod 25 slidably connected to the vertical plate 24 passes through the vertical plate 24, a fixed rod 26 is welded and fixed to the inner wall of the processing box 1, a first conductive metal sheet 27 is fixedly bonded to the sliding rod 25, and the first conductive metal sheet 27 is connected to the solenoid valve 23 through a wire, and a second conductive metal sheet 28 is fixedly bonded to the fixed rod 26, and the second conductive metal sheet 28 is connected to the external power grid through a wire.

[0075] A connecting plate 40 is welded between the two sliding plates 14 , and an L-shaped push plate 22 is welded and fixed to the side surface of the connecting plate 40 .

[0076] The push plate 22, the sliding rod 25 and the fixed rod 26 are on the same horizontal plane. The push plate 22, the sliding rod 25 and the fixed rod 26 are all L-shaped structures. The cross-section of the sliding rod 25 is square. A limit plate 30 is welded and fixed to one end face of the horizontal part of the sliding rod 25. A spring 29 is sleeved on the sliding rod 25 between the limit plate 30 and the vertical plate 24. Both ends of the spring 29 are welded and fixed to the limit plate 30 and the vertical plate 24.

[0077] When the sliding plate 14 moves horizontally, it will drive the connecting plate 40 to move synchronously, and the connecting plate 40 will drive the push plate 22 thereon to move. During the movement of the push plate 22, it will contact the sliding rod 25, and then push the sliding rod 25 to move on the vertical plate 24 until the first conductive metal sheet 27 and the second conductive metal sheet 28 on the sliding rod 25 and the fixed rod 26 fit together, so that the solenoid valve 23 can be connected to the circuit.

[0078] When the sliding plate 14 drives the connecting plate 40 to reset, the push plate 22 separates from the sliding rod 25. When the sliding rod 25 moves, the spring 29 is compressed by the limit plate 30. At this time, under the elastic force of the spring 29, the sliding rod 25 is pulled to reset through the limit plate 30. At this time, the solenoid valve 23 disconnects the circuit.

[0079] The square cross-section design of the sliding rod 25 enables it to slide linearly on the vertical plate 24 only and cannot rotate.

[0080] like Figure 1 As shown, in the embodiment of the present invention, the processing box 1 is L-shaped as a whole, the top of the processing box 1 is open, and the wall of the processing box 1 on one side of the collection tank is open;

[0081] The rotating cylinder 2 is located at the top of the vertical portion of the processing box 1 , and the collecting tank and the crucible 15 are located at one side of the horizontal portion of the processing box 1 .

[0082] The open top design of the rotating cylinder 2 makes it easy to pour the needle into the rotating cylinder 2 and to screw in and out the top cover 3. The open side design of the rotating cylinder 2 makes it easy to take out the cooled and formed metal blocks in the collection pool, and the structure is reasonable.

[0083] In the description of this specification, "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for processing discarded medical needles, comprising a processing box (1), a rotating cylinder (2), a crucible (15) and a collecting pool located in the processing box (1), characterized in that: The rotating cylinder (2) is provided with symmetrically distributed grooves, and a first column (5) and a second column (6) are welded and fixed in the two grooves. The back walls of the first column (5) and the second column (6) are respectively connected to a first rotating roller (7) and a second rotating roller (8). The first rotating roller (7) and the second rotating roller (8) both penetrate the wall of the processing box (1). One end of the first rotating roller (7) is connected to a liquid nitrogen inlet pipe (9) and a first connecting pipe (10) through a tee, and one end of the second rotating roller (8) is connected to an exhaust pipe (12) through a movable joint. The bottom of the rotating cylinder (2) is provided with a discharge port (4), the top of the rotating cylinder (2) is threadedly connected with a top cover (3), and the discharge port (4) is provided with a solenoid valve (23); The front and rear side walls of the processing box (1) are both provided with open grooves (13), and a sliding plate (14) is arranged in the open groove (13). The two sliding plates (14) are fixed by welding through a guide rod (19), and the two sliding plates (14) are penetrated by a screw rod (20) connected to the bearings thereof. Rotating columns (16) connected to the bearings of the sliding plate (14) are arranged on both sides of the crucible (15), and an induction heating coil (18) is sleeved on the rotating column (16) on one side of the crucible (15), and the induction heating coil (18) is fixed on the movable plate (17). The guide rod (19) passes through the movable plate (17) and is slidably connected to the movable plate (17), and the screw rod (20) passes through the movable plate (17) and is threadedly connected to the movable plate (17). A heat-conducting coil (38) for heat exchange is arranged in the collection pool, and the heat-conducting coil (38) is used to generate steam and pass it into the first connecting pipe (10).

2. A medical waste needle disposal device according to claim 1, characterized in that: The processing box (1) is L-shaped as a whole, the top of the processing box (1) is open, and the wall of the processing box (1) on one side of the collection pool is open; The rotating cylinder (2) is located at the top of the vertical part of the processing box (1), and the collecting pool and the crucible (15) are located on one side of the horizontal part of the processing box (1).

3. A medical waste needle disposal device according to claim 1, characterized in that: The first column (5) and the second column (6) are both hollow structures, the first column (5) and the second column (6) are both vertical, and evenly distributed through holes are provided on opposite sides of the first column (5) and the second column (6).

4. A medical waste needle disposal device according to claim 1, characterized in that: The first rotating roller (7) and the second rotating roller (8) are both hollow tubes. The first rotating roller (7) is connected to the processing box (1) by welding, and the second rotating roller (8) is connected to the processing box (1) by bearings. The first rotating roller (7) is movably connected to the rotating cylinder (2) and the first column (5) via bearings, and the second rotating roller (8) is welded to the rotating cylinder (2) and the first column (5).

5. A medical waste needle disposal device according to claim 1, characterized in that: A vertical plate (24) is welded and fixed to the outer wall of the bottom end of the rotating cylinder (2), a sliding rod (25) slidably connected to the vertical plate (24) passes through the vertical plate (24), and a fixing rod (26) is welded and fixed to the inner wall of the processing box (1). A first conductive metal sheet (27) is fixedly bonded to the sliding rod (25), and the first conductive metal sheet (27) is connected to the electromagnetic valve (23) via a wire. A second conductive metal sheet (28) is fixedly bonded to the fixed rod (26), and the second conductive metal sheet (28) is connected to an external power grid via a wire.

6. A medical waste needle disposal device according to claim 5, characterized in that: A connecting plate (40) is welded between the two sliding plates (14), an L-shaped push plate (22) is welded and fixed to the side of the connecting plate (40), a T-shaped sliding rail (21) is welded to the top and bottom ends of the sliding plate (14), and a sliding groove that matches the sliding rail (21) is opened on the groove wall of the open groove (13).

7. A medical waste needle disposal device according to claim 6, characterized in that: The push plate (22), the sliding rod (25) and the fixed rod (26) are on the same horizontal plane, the push plate (22), the sliding rod (25) and the fixed rod (26) are all L-shaped structures, and the cross section of the sliding rod (25) is square; A limit plate (30) is welded and fixed to one end surface of the horizontal portion of the sliding rod (25), a spring (29) is sleeved on the sliding rod (25) between the limit plate (30) and the vertical plate (24), and both ends of the spring (29) are welded and fixed to the limit plate (30) and the vertical plate (24).

8. A medical waste needle disposal device according to claim 1, characterized in that: The crucible (15) is a square pool body, the induction heating coil (18) and the rotating column (16) are coaxial, and the inner diameter of the induction heating coil (18) is greater than the height and width of the crucible (15).

9. A medical waste needle disposal device according to claim 1, characterized in that: The collecting pool is formed by welding a bottom plate (33), a side plate (35) and an end plate (36); the bottom plate (33) is fixed to the inner wall of the bottom end of the processing box (1); the bottom plate (33) extends vertically upward to form a plurality of grooves (34); and the side plate (35) is provided with a plurality of slots (37) matching the grooves (34); The heat-conducting coil (38) extends into the groove (34) and is welded to the bottom plate (33) at the groove (34); one end of the heat-conducting coil (38) is butt-jointed to the water inlet pipe via a water distributor; the heat-conducting coil (38) is welded to a connecting column (39) having a hollow structure.

10. A medical waste needle disposal device according to claim 9, characterized in that: A steam booster pump (32) is arranged inside the treatment box (1), and the inlet end of the steam booster pump (32) is connected to the connecting column (39) by welding. The outlet end of the steam booster pump (32) is flange-connected to a second connecting pipe (31), and the second connecting pipe (31) is respectively connected to the steam inlet pipe (11) and the first connecting pipe (10) through a tee.

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