Medical waste low-temperature pyrolysis equipment

Abstract

The invention discloses medical waste low-temperature pyrolysis equipment, and relates to the technical field of waste pyrolyzing.The medical waste low-temperature pyrolysis equipment comprises two supports which are transversely distributed in a spaced mode, a pyrolysis hearth is fixedly connected between the two supports, one end of the pyrolysis hearth is connected with a feeding system, the feeding system is used for pushing waste into the pyrolysis hearth, and the other end of the pyrolysis hearth is connected with a discharging system; the discharging system is connected with the other end of the pyrolysis hearth and used for continuously pushing out waste in the pyrolysis hearth, the combustion system is arranged on the side, close to the discharging system, of the pyrolysis hearth and used for combusting gas and waste discharged out of the pyrolysis hearth, and the condensation system is arranged on the side, close to the discharging system, of the pyrolysis hearth and used for condensing the gas and the waste discharged out of the pyrolysis hearth. The condensation system is located on one side of the combustion system and used for condensing and separating gas exhausted from the pyrolysis hearth and injecting the gas into the combustion system; the medical waste pyrolysis device can effectively improve the efficiency and quality of medical waste pyrolysis.

Description

Technical Field

[0001] The invention relates to the technical field of waste pyrolysis, and in particular to a low-temperature pyrolysis device for medical waste. Background Art

[0002] Medical waste contains a large amount of organic matter, has high calorific value and low volatility. While reducing and harmlessly treating medical waste, it is imperative to realize its resource utilization. The commonly used medical waste disposal technologies in my country are divided into incineration, high-temperature water boiling, dry chemical disinfection, microwave disinfection and low-temperature pyrolysis technology. However, most of these medical waste disposal technologies have certain defects. For example, incineration technology is prone to produce a large amount of dioxins, which causes serious pollution problems. High-temperature water boiling is prone to produce a large amount of wastewater and odor, which is not conducive to better treatment of medical waste.

[0003] At present, low-temperature pyrolysis technology is generally used. Low-temperature pyrolysis technology uses an oxygen-free, low-temperature closed environment to break down large molecules of organic waste into more small and medium molecules, and pyrolyze organic matter into oil for recovery, so as to realize resource utilization, while taking into account disinfection, reduction, and resource utilization. Pyrolysis non-condensable gases and pyrolysis residues have little pollution after combustion. However, at present, when low-temperature pyrolysis of medical waste is generally carried out, a hot air cavity is formed between the heating cylinder and the pyrolysis equipment, thereby providing hot air to indirectly heat the medical waste, which has a large heat consumption. At the same time, it can only pyrolyze medical waste intermittently, and the pyrolysis residue is not conducive to continuous discharge from the pyrolysis equipment. When discharging the pyrolysis residue, it is easy for the outside gas to connect with the pyrolysis equipment, causing the pyrolysis equipment to be unable to be continuously sealed during discharge, so that the pyrolysis equipment cannot be effectively in a stable oxygen-free closed environment, and dioxins are easily generated at this time to pollute the environment.

[0004] Therefore, a low-temperature pyrolysis device for medical waste is invented to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a low-temperature pyrolysis device for medical waste, which can effectively solve the technical problems in the background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a low-temperature pyrolysis device for medical waste, comprising two brackets distributed laterally at intervals, a pyrolysis furnace being fixedly connected between the two brackets, a feeding system being connected to one end of the pyrolysis furnace, and the feeding system being used to push the waste into the pyrolysis furnace; A discharge system, the discharge system is connected to the other end of the pyrolysis furnace, and is used to continuously push out the waste in the pyrolysis furnace. The discharge system includes two discharge pipes distributed vertically and extending laterally. The discharge pipe close to the pyrolysis furnace is connected to the pyrolysis furnace through a first guide groove, and the two discharge pipes are connected through a second guide groove. A sealing block is slidably connected in the discharge pipe. When one sealing block remains stationary, the other sealing block reciprocates and slides to push the waste; A combustion system, the combustion system is arranged on a side of the pyrolysis furnace close to the discharge system, and is used to burn the gas and waste discharged from the pyrolysis furnace; A condensation system is located at one side of the combustion system and is used to condense and separate the gas exhausted from the pyrolysis furnace and inject it into the combustion system.

[0007] Preferably, the discharging system also includes an annular groove provided on the circumferential side of the sealing block, a sealing ring being slidably connected in the annular groove, a plurality of top plates being slidably connected in the annular groove and distributed at circumferential intervals and fixedly connected to the inner wall of the sealing ring, a top plate being fixedly connected to one end of the top plate close to the sealing block, an axially extending air guide groove being provided in the sealing block, a plurality of air guide holes corresponding to the top rod and connected to the air guide groove being provided in the sealing block, and the top rod being slidably connected to the corresponding air guide holes.

[0008] Preferably, the two discharge pipes are commonly fixedly connected to a transmission box at one end away from the pyrolysis furnace, the sealing block is fixedly connected to a push rod at one end away from the pyrolysis furnace, the free end of the push rod extends into the transmission box and is slidably connected to the transmission box, a transmission plate is slidably connected inside the transmission box, inclined guide grooves are provided on both sides of the transmission plate vertically, the two guide grooves are connected by a vertically extending guide groove, the free end of the push rod is fixedly connected to an insertion rod that can be inserted into the corresponding guide groove, and the length of the guide groove is greater than the length of the guide groove.

[0009] Preferably, a U-shaped connecting tube is fixedly connected in the transmission box, and the two free ends of the connecting tube are respectively slidably connected to the corresponding push rods. The two free ends of the connecting tube are respectively slidably connected with baffles through first elastic members. The baffle is provided with a plurality of air grooves distributed along its circumferential direction. The push rod can contact the baffle and block the air grooves. A gas rod is slidably connected in the push rod, and one end of the gas rod close to the pyrolysis furnace extends into the air guide groove.

[0010] Preferably, a driving motor is provided in the transmission box, a disc is coaxially fixedly connected to the output end of the driving motor, an end of the disc close to the transmission plate is eccentrically fixedly connected to a driving rod, an end of the transmission plate close to the driving motor is fixedly connected to a limiting ring, and the driving rod is inserted into the limiting ring.

[0011] Preferably, the combustion system includes a combustion box fixedly connected to the pyrolysis furnace, a portion of the pyrolysis furnace is located in the combustion box, a smoke exhaust pipe is fixedly connected to the top of the combustion box, and a discharge pipe away from the pyrolysis furnace is connected to the combustion box.

[0012] Preferably, the condensation system includes a condensation tower located on one side of the combustion box and extending vertically, the bottom of the condensation tower is connected to an air inlet pipe, the free end of the air inlet pipe is connected to one end of the pyrolysis furnace close to the discharge pipe, the top of the condensation tower is connected to an air outlet pipe, the free end of the air outlet pipe is connected to a water seal box, and the water seal box is connected to the combustion box through a conduit.

[0013] Preferably, the feeding system includes a feeding pipe fixedly connected to the pyrolysis furnace, a feeding bin fixedly connected to the feeding pipe, a telescopic cylinder fixedly connected to the free end of the feeding pipe, and a feeding block slidably connected to the feeding pipe fixedly connected to the output end of the telescopic cylinder.

[0014] Preferably, a spiral electromagnetic heating tube is fixedly connected to the pyrolysis furnace, a section of the electromagnetic heating tube close to the feeding system is a low-temperature section, and a section of the electromagnetic heating tube close to the combustion system is a high-temperature section.

[0015] Preferably, a heat insulating cover covering the electromagnetic heating tube is fixedly connected to the pyrolysis furnace.

[0016] Technical effects and advantages of the present invention: 1. The present invention uses the arrangement of a condensation system, a combustion system and a discharge system to allow the pyrolysis gas to undergo secondary separation through a condensation tower, so that non-condensable substances flow into a combustion box for combustion. At the same time, through the arrangement of two discharge pipes, the pyrolysis residues generated in the pyrolysis furnace can be continuously squeezed into the combustion box, thereby providing heat for the rear-stage pyrolysis of medical waste, achieving rational utilization of resources, and reducing energy consumption during pyrolysis of medical waste. The arrangement of the two discharge pipes not only facilitates continuous pushing of the pyrolysis residues into the combustion box, but also facilitates placing the pyrolysis furnace in an oxygen-deficient or oxygen-free closed environment, further improving the effect and quality of pyrolysis of medical waste, while effectively reducing the problem of dioxin generation.

[0017] 2. The present invention, through the arrangement of the push rod, the connecting tube and the gas rod, can drive the sliding of the gas rod through the gas during the sliding of the push rod, and under the action of the gas rod, the push rod can slide quickly under the action of the gas, so that one of the sealing rings can undergo elastic deformation and better contact with the inner wall of the discharge pipe, thereby improving the sealing effect and preventing the gas in the combustion box from entering the pyrolysis furnace. When one of the sealing blocks slides, the sealing ring is in an initial state, which can reduce the sliding friction of the sealing block, thereby ensuring that the sealing block can still maintain good sealing performance during long-term use, further improving the effect and quality of pyrolysis of medical waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a rear axonometric view of the overall mechanism of the present invention; Figure 3 It is a right side cross-sectional view of the present invention; Figure 4 It is a cross-sectional view of the discharging system and the combustion system of the present invention; Figure 5 It is a structural schematic diagram of the connecting pipe in the present invention; Figure 6 It is a structural schematic diagram of the sealing block in the present invention; Figure 7 It is a schematic diagram of the cross-section structure of the transmission box in the present invention; Figure 8 It is a structural schematic diagram of the transmission plate in the present invention; Fig. 9 It is a structural schematic diagram of another viewing angle of the transmission plate in the present invention; Fig.10 is a cross-sectional view of a feeding system in the present invention; Fig.11 It is a top axonometric view of the overall mechanism of the present invention.

[0019] In the figure: 1. bracket; 2. pyrolysis furnace; 3. Feeding system; 301. Feeding pipe; 302. Feeding bin; 303. Telescopic cylinder; 304. Feeding block; 4. Discharging system; 401. Discharging pipe; 402. First guide trough; 403. Second guide trough; 404. Sealing block; 405. Ring groove; 406. Sealing ring; 407. Top plate; 408. Top rod; 409. Air guide groove; 410. Air guide hole; 411. Transmission box; 412. Push rod; 413. Transmission plate; 414. Guide groove; 415. Guide groove; 416. Insert rod; 417. Connecting pipe; 418. First elastic member; 419. Baffle; 420. Air groove; 421. Air rod; 422. Driving motor; 423. Disc; 424. Transmission rod; 425. Limiting ring; 5. Combustion system; 501. Combustion box; 502. Smoke exhaust pipe; 6. Condensation system; 601. Condensation tower; 602. Air inlet pipe; 603. Air outlet pipe; 604. Water seal box; 605. Conduit; 7. Electromagnetic heating tube; 701. Low temperature section; 702. High temperature section; 8. Heat insulation cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1 At present, when low-temperature pyrolysis of medical waste is generally performed by forming a hot air chamber between the heating cylinder and the pyrolysis equipment, thereby providing hot air to indirectly heat the medical waste, which has a large heat consumption and can only pyrolyze the medical waste intermittently. In addition, the pyrolysis residue is not conducive to continuous discharge from the pyrolysis equipment. When the pyrolysis residue is discharged, it is easy for the external gas to communicate with the pyrolysis equipment, so that the pyrolysis equipment cannot be effectively placed in a stable oxygen-free environment. At this time, dioxins are easily generated to pollute the environment. Therefore, this embodiment is specially invented to solve the above problems.

[0022] like Figure 1-Figure 11As shown, this example provides a low-temperature pyrolysis device for medical waste, including two brackets 1 distributed at intervals in the horizontal direction, a pyrolysis furnace 2 is fixedly connected between the two brackets 1, a feeding system 3 is connected to one end of the pyrolysis furnace 2, the feeding system 3 is used to push the waste into the pyrolysis furnace 2, a discharging system 4 is connected to the other end of the pyrolysis furnace 2, and is used to continuously push out the waste in the pyrolysis furnace 2, the discharging system 4 includes two vertically distributed and laterally extended discharging pipes 401, the discharging pipe 401 close to the pyrolysis furnace 2 is connected to the pyrolysis furnace 2 through a first guide groove 402, and the two discharging pipes 401 are connected through a second guide groove 403, and a sealing block 404 is slidably connected in the discharging pipe 401, and when one sealing block 404 remains stationary, the other sealing block 404 performs reciprocating sliding to push the material.

[0023] The ends of the two discharge pipes 401 away from the pyrolysis furnace 2 are fixedly connected to a transmission box 411. The end of the sealing block 404 away from the pyrolysis furnace 2 is fixedly connected to a push rod 412. The free end of the push rod 412 extends into the transmission box 411 and is slidably connected to the transmission box 411. A transmission plate 413 is slidably connected in the transmission box 411. The transmission plate 413 is provided with inclined guide grooves 414 on both sides of the vertical direction. The two guide grooves 414 are connected by a guide groove 415 extending vertically. The push rod 412 is free. The end is fixedly connected with an insertion rod 416 which can be inserted into the corresponding guide groove 414. The length of the guide groove 415 is greater than the length of the guide groove 414. A driving motor 422 is provided in the transmission box 411. A disc 423 is coaxially fixedly connected to the output end of the driving motor 422. The end of the disc 423 close to the transmission plate 413 is eccentrically fixedly connected with a transmission rod 424. The end of the transmission plate 413 close to the driving motor 422 is fixedly connected with a limiting ring 425, and the transmission rod 424 is inserted into the limiting ring 425.

[0024] The combustion system 5 is arranged on one side of the pyrolysis furnace 2 close to the discharge system 4, and is used to burn the gas and waste discharged from the pyrolysis furnace 2. The combustion system 5 includes a combustion box 501 fixedly connected to the pyrolysis furnace 2, a part of the pyrolysis furnace 2 is located in the combustion box 501, and a smoke exhaust pipe 502 is fixedly connected to the top of the combustion box 501, and the discharge pipe 401 away from the pyrolysis furnace 2 is connected to the combustion box 501.

[0025] The condensation system 6 is located on one side of the combustion system 5, and is used to condense and separate the gas exhausted from the pyrolysis furnace 2 and inject it into the combustion system 5. The condensation system 6 includes a condensation tower 601 located on one side of the combustion box 501 and extending vertically. The bottom of the condensation tower 601 is connected to an air inlet pipe 602, and the free end of the air inlet pipe 602 is connected to an end of the pyrolysis furnace 2 close to the discharge pipe 401. The top of the condensation tower 601 is connected to an air outlet pipe 603, and the free end of the air outlet pipe 603 is connected to a water seal box 604. The water seal box 604 and the combustion box 501 are connected via a conduit 605.

[0026] The feeding system 3 includes a feeding pipe 301 fixedly connected to the pyrolysis furnace 2, a feeding bin 302 fixedly connected to the feeding pipe 301, a telescopic cylinder 303 fixedly connected to the free end of the feeding pipe 301, a feeding block 304 slidably connected to the feeding pipe 301 fixedly connected to the output end of the telescopic cylinder 303, a spiral electromagnetic heating tube 7 fixedly connected to the pyrolysis furnace 2, a section of the electromagnetic heating tube 7 close to the feeding system 3 is a low-temperature section 701, a section of the electromagnetic heating tube 7 close to the combustion system 5 is a high-temperature section 702, and a heat insulation cover 8 covering the electromagnetic heating tube 7 is fixedly connected to the pyrolysis furnace 2.

[0027] When in use, firstly, the existing medical waste crusher is sealed and connected to the opening of the feed bin 302 to prevent outside air from entering the pyrolysis furnace 2 when feeding into the pyrolysis furnace 2. Then, after the crushed medical waste falls into the feed pipe 301 through the feed bin 302, the telescopic cylinder 303 is started, so that the telescopic cylinder 303 drives the feed block 304 to slide along the feed pipe 301 toward the pyrolysis furnace 2, so that the feed block 304 pushes the medical waste in the feed pipe 301 into the pyrolysis furnace 2. At the same time, the electromagnetic heating tube 7 is energized to generate a high-frequency magnetic field to heat the pyrolysis furnace 2. Due to the electric The direction of the magnetic heating tube 7 from the feeding system 3 to the discharging system 4 is a low-temperature section 701 and a high-temperature section 702 respectively. It should be noted that an auger feeding mechanism is provided in the pyrolysis furnace 2, and the auger feeding mechanism is a prior art, and the specific structure is not repeated here, so that the medical waste entering the pyrolysis furnace 2 passes through the low-temperature section 701 and the high-temperature section 702 of the electromagnetic heating tube 7 in turn, and in a high-temperature and oxygen-deficient environment, the medical waste undergoes pyrolysis reaction at different temperatures, which is beneficial to the comprehensive and thorough pyrolysis of the medical waste, and the provided heat insulation cover 8 is convenient for reducing the heat loss of the pyrolysis furnace 2 and plays a protective role.

[0028] At this time, the pyrolysis gas generated in the pyrolysis furnace 2 enters the condensation tower 601 through the air inlet pipe 602. Under the action of the condensation tower 601, the condensable substances in the pyrolysis gas are liquefied and retained in the condensation tower 601 for recovery, and the non-condensable gas flows into the water seal box 604 from the top of the condensation tower 601 through the air outlet pipe 603, and the non-condensable gas flows into the combustion box 501 through the conduit 605. The setting of the water seal box 604 can effectively prevent backfire. It should be noted that an ignition mechanism is provided in the combustion box 501, and the ignition mechanism is a prior art. The specific structure will not be repeated. It can ignite the pyrolysis gas and pyrolysis residue flowing into the combustion box 501, thereby heating the pyrolysis furnace 2 again and providing heat for the subsequent pyrolysis of medical waste. The combustion waste gas in the combustion box 501 is connected to the waste gas treatment equipment through the smoke exhaust pipe 502, which is convenient for better treatment of the combustion waste gas.

[0029] At the same time, the pyrolysis residue in the pyrolysis furnace 2 flows into the discharge pipe 401 near the pyrolysis furnace 2 through the first guide groove 402. At this time, the drive motor 422 in the transmission box 411 is started, and the drive motor 422 drives the disc 423 to rotate. When the connection point between the disc 423 and the transmission rod 424 rotates from the leftmost side to the bottommost side, the disc 423 drives the transmission plate 413 to slide upward along the transmission box 411 through the transmission rod 424 and the limit ring 425, and the shape of the limit ring 425 is waist-shaped, and the transmission plate 413 drives the push rod 412 near the pyrolysis furnace 2 along the transmission box 411 through the guide groove 414 and the insertion rod 416. The moving box 411 slides in the direction away from the pyrolysis furnace chamber 2, so that the push rod 412 drives the sealing block 404 to slide and no longer blocks the connection between the first material guide groove 402 and the discharge pipe 401. The pyrolysis residue in the pyrolysis furnace chamber 2 flows into the discharge pipe 401 through the first material guide groove 402. At the same time, the insertion rod 416 away from the pyrolysis furnace chamber 2 slides along the guide groove 415, and the first material guide groove 402 and the second material guide groove 403 are staggered, so that the sealing block 404 away from the pyrolysis furnace chamber 2 continues to block the connection between the second material guide groove 403 and the discharge pipe 401, which can prevent the gas in the combustion box 501 from entering the pyrolysis furnace chamber 2.

[0030] When the connection point between the disc 423 and the transmission rod 424 rotates from the lowermost side to the rightmost side, the transmission plate 413 slides upward along the transmission box 411, and the transmission plate 413 drives the push rod 412 close to the pyrolysis furnace 2 to slide through the guide groove 414 and the insertion rod 416, so that the push rod 412 drives the sealing block 404 to slide in the direction of the pyrolysis furnace 2, so that the sealing block 404 pushes the pyrolysis residue in the discharge pipe 401 close to the pyrolysis furnace 2 into the second guide groove 403. At this time, both the insertion rods 416 slide to the connection point of the guide groove 414 and the guide groove 415, so that the sealing block 404 close to the pyrolysis furnace 2 blocks the connection port between the first guide groove 402 and the discharge pipe 401.

[0031] When the connection point between the disc 423 and the transmission rod 424 rotates from the rightmost side to the uppermost side, the transmission plate 413 continues to slide upward, and the transmission plate 413 drives the push rod 412 away from the pyrolysis furnace 2 to slide through the guide groove 414 and the insertion rod 416, so that the push rod 412 drives the sealing block 404 to no longer block the connection between the second guide groove 403 and the discharge pipe 401, so that the pyrolysis residue flows into the discharge pipe 401 through the second guide groove 403. At this time, the insertion rod 416 close to the pyrolysis furnace 2 slides in the guide groove 415, so that the sealing block 404 close to the pyrolysis furnace 2 blocks the connection between the first guide groove 402 and the discharge pipe 401. During the process of the upper side rotating to the lowermost side, the transmission plate 413 slides downward, and the transmission plate 413 drives the push rod 412 away from the pyrolysis furnace 2 to slide through the guide groove 414 and the insertion rod 416, and the push rod 412 drives the sealing block 404 to push the pyrolysis residue in the discharge pipe 401 into the combustion box 501 for secondary utilization. At this time, the two insertion rods 416 are both located at the connection port of the guide groove 415 and the guide groove 414. At this time, repeating the above movement can continuously push the pyrolysis residue into the combustion box 501, and at the same time, it also prevents the gas in the combustion box 501 from continuously entering the pyrolysis furnace 2, so as to ensure the closed oxygen-deficient space inside the pyrolysis furnace 2, thereby improving the efficiency and quality of the pyrolysis of medical waste and reducing the generation of dioxins.

[0032] To summarize, through the arrangement of the condensation system 6, the combustion system 5 and the discharge system 4, the pyrolysis gas is subjected to secondary separation through the condensation tower 601, so that the non-condensable substances flow into the combustion box 501 for combustion. At the same time, through the arrangement of the two discharge pipes 401, the pyrolysis residues produced in the pyrolysis furnace 2 can be continuously squeezed into the combustion box 501, thereby providing heat for the latter stage pyrolysis of medical waste, realizing the rational utilization of resources and reducing the energy consumption during the pyrolysis of medical waste. The arrangement of the two discharge pipes 401 is not only convenient for continuously pushing the pyrolysis residues into the combustion box 501, but also convenient for placing the pyrolysis furnace 2 in an oxygen-deficient or oxygen-free closed environment, further improving the effect and quality of the pyrolysis of medical waste, and effectively reducing the problem of dioxin generation.

[0033] Example 2 During the intermittent sliding of the two sealing blocks 404 in the discharge pipe 401, the sealing blocks 404 move for a long time and rub against the inner wall of the discharge pipe 401, which may cause the sealing effect of the sealing blocks 404 on the discharge pipe 401 to gradually weaken, and ultimately fail to achieve a good sealing effect. At the same time, the greater the friction between the sealing blocks 404 and the discharge pipe 401, the more unfavorable it is for the sealing blocks 404 to slide in the discharge pipe 401, and at the same time, it is easy to reduce the service life of the sealing blocks 404, and it is not conducive to making the pyrolysis furnace 2 an oxygen-free or oxygen-deficient enclosed space. Therefore, further improvements are made based on the above embodiments.

[0034] like Figure 4-Figure 6 As shown, the discharging system 4 also includes an annular groove 405 provided on the circumferential side of the sealing block 404, a sealing ring 406 is slidably connected in the annular groove 405, a plurality of top plates 407 are slidably connected in the annular groove 405 and are distributed at circumferential intervals and fixedly connected to the inner wall of the sealing ring 406, one end of the top plate 407 close to the sealing block 404 is fixedly connected to a push rod 408, an axially extending air guide groove 409 is provided in the sealing block 404, a plurality of air guide holes 410 corresponding to the push rod 408 and connected to the air guide groove 409 are provided in the sealing block 404, and the push rod 408 is slidably connected to the corresponding air guide holes 410.

[0035] A U-shaped connecting pipe 417 is fixedly connected in the transmission box 411, and the two free ends of the connecting pipe 417 are slidably connected to the corresponding push rods 412 respectively. The two free ends of the connecting pipe 417 are slidably connected with baffles 419 through first elastic members 418 respectively. The baffle 419 is provided with a plurality of air grooves 420 distributed along its circumferential direction. The push rod 412 can contact the baffle 419 and can block the air grooves 420. A gas rod 421 is slidably connected in the push rod 412, and one end of the gas rod 421 close to the pyrolysis furnace 2 extends into the air guide groove 409.

[0036] When in use, when the push rod 412 close to the pyrolysis furnace 2 slides toward the transmission box 411, since the push rod 412 is in a horizontal through state, and when the push rod 412 contacts the baffle 419 in the connecting pipe 417, the baffle 419 is pushed to slide along the connecting pipe 417, and the first elastic member 418 is compressed. At this time, the baffle 419 blocks the passage of the push rod 412, and the push rod 412 blocks the gas groove 420 on the baffle 419, so that the push rod 412 pushes the gas in the connecting pipe 417 through the baffle 419 through the gas groove 420 on the baffle 419 to squeeze into the push rod 412 away from the pyrolysis furnace 2. Under the action of the gas pressure, the gas drives the gas rod 421 to slide along the push rod 412, and the gas rod 421 slides along the gas guide groove 409, so that The space of the gas guide groove 409 gradually becomes smaller, and the gas rod 421 squeezes the gas in the gas guide groove 409 into the gas guide hole 410, so that the gas pushes the multiple push rods 408 to slide radially outward along the gas guide hole 410, and the push rods 408 drive the top plate 407 to slide radially outward along the annular groove 405, so that the top plate 407 drives the sealing ring 406 to slide along the annular groove 405 and elastically deforms, and the sealing ring 406 elastically deforms to better fit the inner wall of the discharge pipe 401, so that when the sealing block 404 is in a stationary state, the gap between the inner wall of the discharge pipe 401 and the sealing block 404 is better sealed through the elastic deformation of the sealing ring 406, thereby ensuring that the pyrolysis furnace 2 can be in a stable oxygen-deficient closed environment, so that medical waste can be better pyrolyzed and the generation of dioxins can be reduced.

[0037] When the push rod 412 close to the pyrolysis furnace 2 slides in the direction away from the transmission box 411, at this time, the push rod 412 slides along the connecting pipe 417 towards the pyrolysis furnace 2, and the push rod 412 drives the sealing block 404 to seal the connection port of the first guide groove 402 and the discharge pipe 401 again. At this time, the push rod 412 and the baffle plate 419 no longer push the gas, so that the internal space of the connecting pipe 417 is increased, and the gas in the push rod 412 away from the pyrolysis furnace 2 flows back. At the same time, under the action of the elastic force of the sealing ring 406, the sealing ring 406 drives the push rod 408 to return to the initial position through multiple top plates 407, so that the gas in the gas guide groove 409 pushes the gas rod 421 along the push rod 412 slides to the initial position, and under the action of the first elastic member 418, the first elastic member 418 drives the baffle 419 back to the initial position, so that the push rod 412 can quickly contact the baffle 419 to better push the gas, and repeat the above actions. When different sealing blocks 404 are in a stationary state, the sealing effect can be improved again through the sealing ring 406. When different sealing blocks 404 are in motion, the friction between the sealing block 404 and the discharge pipe 401 is reduced, which not only improves the smoothness of the sliding of the sealing block 404, but also can effectively improve the sealing effect, further ensure the sealing inside the pyrolysis furnace 2, and improve the pyrolysis efficiency.

[0038] To sum up, through the arrangement of the push rod 412, the connecting tube 417 and the gas rod 421, the gas can drive the sliding of the gas rod 421 during the sliding of the push rod 412, and under the action of the gas rod 421, the push rod 408 can slide quickly under the action of the gas, so that one of the sealing rings 406 can undergo elastic deformation and better contact with the inner wall of the discharge pipe 401, thereby improving the sealing effect and preventing the gas in the combustion box 501 from entering the pyrolysis furnace 2. When one of the sealing blocks 404 slides, the sealing ring 406 is in the initial state, which can reduce the sliding friction of the sealing block 404, thereby ensuring that the sealing block 404 can still maintain good sealing performance during long-term use, further improving the effect and quality of pyrolysis of medical waste and reducing the possibility of dioxin occurrence.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A low-temperature pyrolysis device for medical waste, comprising two brackets (1) arranged at intervals in a transverse direction, wherein a pyrolysis furnace (2) is fixedly connected between the two brackets (1), characterized in that: One end of the pyrolysis furnace (2) is connected to a feeding system (3), and the feeding system (3) is used to push waste into the pyrolysis furnace (2); A discharge system (4), the discharge system (4) being connected to the other end of the pyrolysis furnace (2) and being used for continuously pushing out the waste in the pyrolysis furnace (2), the discharge system (4) comprising two discharge pipes (401) distributed vertically and extending laterally, the discharge pipe (401) close to the pyrolysis furnace (2) being connected to the pyrolysis furnace (2) via a first guide groove (402), the two discharge pipes (401) being connected via a second guide groove (403), a sealing block (404) being slidably connected in the discharge pipe (401), and when one of the sealing blocks (404) remains stationary, the other sealing block (404) performs reciprocating sliding to push the waste; A combustion system (5), the combustion system (5) being arranged on a side of the pyrolysis furnace (2) close to the discharge system (4) and being used for burning the gas and waste discharged from the pyrolysis furnace (2); A condensation system (6), the condensation system (6) is located on one side of the combustion system (5), and is used to condense and separate the gas exhausted from the pyrolysis furnace (2) and inject it into the combustion system (5).

2. The low-temperature pyrolysis equipment for medical waste according to claim 1, characterized in that: The discharging system (4) further comprises an annular groove (405) provided on the circumferential side of the sealing block (404), a sealing ring (406) being slidably connected in the annular groove (405), a plurality of top plates (407) being slidably connected in the annular groove (405) and being distributed at intervals in the circumference and fixedly connected to the inner wall of the sealing ring (406), a top rod (408) being fixedly connected at one end of the top plate (407) close to the sealing block (404), an axially extending air guide groove (409) being provided in the sealing block (404), a plurality of air guide holes (410) corresponding to the top rods (408) and being connected to the air guide grooves (409) being provided in the sealing block (404), and the top rods (408) being slidably connected to the corresponding air guide holes (410).

3. The low-temperature pyrolysis equipment for medical waste according to claim 2, characterized in that: One end of the two discharge pipes (401) away from the pyrolysis furnace (2) is fixedly connected to a transmission box (411); one end of the sealing block (404) away from the pyrolysis furnace (2) is fixedly connected to a push rod (412); the free end of the push rod (412) extends into the transmission box (411) and is slidably connected to the transmission box (411); a transmission plate (413) is slidably connected to the transmission box (411); inclined guide grooves (414) are provided on both vertical sides of the transmission plate (413); the two guide grooves (414) are connected via a vertically extending guide groove (415); the free end of the push rod (412) is fixedly connected to an insertion rod (416) capable of being inserted into the corresponding guide groove (414); the length of the guide groove (415) is greater than the length of the guide groove (414).

4. The low-temperature pyrolysis equipment for medical waste according to claim 3, characterized in that: A U-shaped connecting tube (417) is fixedly connected inside the transmission box (411), and the two free ends of the connecting tube (417) are respectively slidably connected to the corresponding push rods (412). The two free ends of the connecting tube (417) are respectively slidably connected to baffles (419) via first elastic members (418). The baffles (419) are provided with a plurality of air grooves (420) distributed along the circumferential direction thereof. The push rod (412) can contact the baffles (419) and can block the air grooves (420). A gas rod (421) is slidably connected inside the push rod (412), and one end of the gas rod (421) close to the pyrolysis furnace (2) extends into the air guide groove (409).

5. The low-temperature pyrolysis equipment for medical waste according to claim 4, characterized in that: A driving motor (422) is provided in the transmission box (411); a disc (423) is coaxially fixedly connected to the output end of the driving motor (422); an end of the disc (423) close to the transmission plate (413) is eccentrically fixedly connected to a driving rod (424); an end of the transmission plate (413) close to the driving motor (422) is fixedly connected to a limiting ring (425); and the driving rod (424) is inserted into the limiting ring (425).

6. The low-temperature pyrolysis equipment for medical waste according to claim 5, characterized in that: The combustion system (5) comprises a combustion box (501) fixedly connected to the pyrolysis furnace (2), a portion of the pyrolysis furnace (2) is located in the combustion box (501), a smoke exhaust pipe (502) is fixedly connected to the top of the combustion box (501), and a discharge pipe (401) away from the pyrolysis furnace (2) is connected to the combustion box (501).

7. The low-temperature pyrolysis equipment for medical waste according to claim 6, characterized in that: The condensation system (6) comprises a condensation tower (601) located on one side of the combustion box (501) and extending vertically, the bottom of the condensation tower (601) is connected to an air inlet pipe (602), the free end of the air inlet pipe (602) is connected to an end of the pyrolysis furnace (2) close to the discharge pipe (401), the top of the condensation tower (601) is connected to an air outlet pipe (603), the free end of the air outlet pipe (603) is connected to a water seal box (604), and the water seal box (604) and the combustion box (501) are connected via a conduit (605).

8. The low-temperature pyrolysis equipment for medical waste according to claim 7, characterized in that: The feeding system (3) comprises a feeding pipe (301) fixedly connected to the pyrolysis furnace (2), a feeding bin (302) fixedly connected to the feeding pipe (301), a telescopic cylinder (303) fixedly connected to the free end of the feeding pipe (301), and a feeding block (304) slidably connected to the feeding pipe (301) fixedly connected to the output end of the telescopic cylinder (303).

9. The low-temperature pyrolysis equipment for medical waste according to claim 8, characterized in that: A spiral electromagnetic heating tube (7) is fixedly connected to the pyrolysis furnace (2); a section of the electromagnetic heating tube (7) close to the feeding system (3) is a low-temperature section (701), and a section of the electromagnetic heating tube (7) close to the combustion system (5) is a high-temperature section (702).

10. The low-temperature pyrolysis equipment for medical waste according to claim 9, characterized in that: A heat insulation cover (8) covering the electromagnetic heating tube (7) is fixedly connected to the pyrolysis furnace (2).

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