Discharging sealing device and pyrolyzing furnace

Abstract

The discharging sealing device comprises a main body and a spiral body, the main body comprises a material conveying barrel and a material plug barrel, a material plug inlet communicated with one end of the material plug barrel is formed in the side face of the material conveying barrel, a feeding opening is formed in one end of the material conveying barrel, and a discharging opening is formed in the other end of the material plug barrel; the height of the material plug inlet is lower than that of the discharge hole; the spiral body comprises a spiral shaft, a left rotary vane, a right rotary vane and a driving mechanism, the spiral shaft is connected with the driving mechanism, the spiral shaft is erected in the conveying barrel in the length direction of the conveying barrel, and the left rotary vane is arranged on the outer side face of the spiral shaft from the end in the direction close to the feeding port to the position where the material plug inlet is located; and right rotating blades are arranged on the outer side surface of the spiral shaft from the position of the material plug inlet to the end part deviating from the direction of the material inlet. Compared with the prior art, the discharging sealing device provided by the invention has the advantages that the internal sealing of the pyrolyzing furnace can be realized, and meanwhile, the discharging can be smoothly completed.

Description

Technical Field

[0001] The present invention relates to the technical field of pyrolysis equipment, and particularly to a discharge sealing device and a pyrolysis furnace with the discharge sealing device. Background Art

[0002] At present, the industrial method mainly uses anaerobic pyrolysis to heat waste (materials to be recycled), so that the waste decomposes to form various available materials, and then fuel oil, combustible gas and available materials are extracted from them. Finally, the waste is reduced in quantity, harm and resource. Anaerobic pyrolysis has relatively strict requirements for the internal structure of the pyrolysis furnace, and it is required to isolate the external environment and achieve complete sealing. Among them, the sealing of the discharge mechanism of the pyrolysis furnace mainly adopts the form of material plug sealing. Specifically, the material is extruded into the form of a material plug and discharged from the discharge port to isolate the internal and external environment circulation. However, during the process of material extrusion and transportation, problems such as bridging and coking are very likely to occur at the blanking port, resulting in material blockage at the discharge port, and then serious consequences of abnormal discharge.

[0003] Therefore, how to improve the discharge sealing device of the pyrolysis furnace so that it can achieve smooth discharge while realizing sealing is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In order to solve the above deficiencies in the prior art, the present invention provides a discharge sealing device, including: A main body, the main body includes a material conveying cylinder and a material plug cylinder. A material plug inlet communicating with one end of the material plug cylinder is provided on the side surface of the material conveying cylinder. An inlet is provided at one end of the material conveying cylinder, and an outlet is provided at the other end of the material plug cylinder. The height of the material plug inlet is lower than the height of the outlet. A spiral body, the spiral body includes a spiral shaft, a left-handed blade, a right-handed blade and a driving mechanism. The spiral shaft is connected to the driving mechanism. The spiral shaft is arranged inside the material conveying cylinder along the length direction of the material conveying cylinder. A left-handed blade is provided on the outer side surface of the spiral shaft from the end near the inlet to the position where the material plug inlet is located. A right-handed blade is provided on the outer side surface of the spiral shaft from the position where the material plug inlet is located to the end away from the inlet.

[0005] Preferably, the joint of the left-handed blade and the right-handed blade is located in the middle of the material plug inlet.

[0006] Preferably, the main body further includes a transmission shaft seal and a base. The transmission shaft seal is arranged on one side of the other end of the material conveying cylinder away from the inlet and is hermetically connected to the spiral shaft. The base is respectively connected to the transmission shaft seal and the material conveying cylinder.

[0007] Preferably, the spiral body further includes a baffle plate, which is connected to the spiral shaft in the direction of the other end of the material conveying cylinder, and the pitch diameter of the spiral shaft at the connection with the baffle plate is smaller than the pitch diameter of the spiral shaft in other parts of the material conveying cylinder.

[0008] Preferably, the material conveying cylinder is vertically arranged above the base.

[0009] Preferably, the material plug cylinder includes a material plug squeezing cylinder and a material plug extruding cylinder which are connected to each other. The material plug squeezing cylinder is arranged obliquely upward and is connected to the material conveying cylinder through a material plug inlet at the bottom; the material plug extruding cylinder is horizontally arranged above the material plug squeezing cylinder.

[0010] The discharging and sealing device provided by the present invention includes a main body and a spiral body arranged therein for conveying and extruding materials. The main body includes a material conveying cylinder and a material plug cylinder. One end face of the material conveying cylinder is provided with a feed port and the side face is provided with a material plug inlet. One end of the material conveying cylinder and the material plug cylinder are interconnected through the material plug inlet, and the other end of the material plug cylinder is provided with a discharge port. During operation, materials enter the material conveying cylinder from the feed port, the driving mechanism drives the spiral shaft to rotate, the materials are transported downward under the action of the left-handed blades, and the materials transported to the right-handed blades are transported back under the action of the right-handed blades. The materials transported by the left-handed blades and the right-handed blades converge at the material plug inlet and are mutually extruded into the material plug cylinder. The height of the material plug inlet is lower than the height of the discharge port, and the materials are transported upward in the material plug cylinder. Therefore, a material plug will be formed in the material plug cylinder to achieve sealed discharging. Under the action of the left-handed blades and the right-handed blades on the spiral body, problems such as bridging and coking blockage in the material conveying cylinder and the material plug cylinder can be avoided, and the materials can be discharged smoothly.

[0011] It can be understood that compared with the prior art, the discharging and sealing device provided by the present invention can achieve internal sealing of the pyrolysis furnace while smoothly discharging materials.

[0012] In the second aspect of the present invention, a pyrolysis furnace is proposed, which includes a pyrolysis device, a feeding device and a discharging device. The discharging device includes the above-mentioned discharging and sealing device, and the feed port of the discharging and sealing device is connected to the pyrolysis product outlet of the pyrolysis device. In view of the adoption of the above-mentioned discharging and sealing device, sealed discharging can be smoothly achieved, and the pyrolysis furnace has better safety and longer service life. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 This is a schematic cross-sectional structure diagram of an embodiment of a discharge sealing device of the present invention.

[0015] Reference numerals: 1, material conveying cylinder; 2, feed inlet; 3, material plug inlet; 4, material plug cylinder; 401, material plug squeezing cylinder; 402, material plug extruding cylinder; 5, discharge outlet; 6, spiral shaft; 7, left-handed blade; 8, right-handed blade; 9, bearing seat; 10, chain; 11, sprocket; 12, electric speed reducer; 13, drive shaft seal; 14, base; 15, baffle plate. Embodiment

[0016] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0018] In the embodiments of the present invention, for the convenience of description rather than limitation of the present invention, the term "connection" used in the specification and claims of the present invention patent application is not limited to physical or mechanical connection, but may include electrical connection, whether direct or indirect. "Upper", "lower", "below", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship also changes accordingly.

[0019] As Figure 1 shown, a discharge sealing device provided by a specific embodiment of the present invention includes: A main body, the main body includes a material conveying cylinder 1 and a material plug cylinder 4. A material plug inlet 3 communicating with one end of the material plug cylinder 4 is opened on the side of the material conveying cylinder 1. A feed inlet 2 is opened at one end of the material conveying cylinder 1. A discharge outlet 5 is opened at the other end of the material plug cylinder 4. The height of the material plug inlet 3 is lower than the height of the discharge outlet 5; The spiral body includes a spiral shaft 6, a left-handed blade 7, a right-handed blade 8, and a driving mechanism. The spiral shaft 6 is connected to the driving mechanism. The spiral shaft 6 is installed inside the feeding cylinder 1 along the length direction of the feeding cylinder 1. A left-handed blade 7 is provided at the end of the outer side of the spiral shaft 6 along the direction near the feeding port 2 to the position of the material plug inlet 3. A right-handed blade 8 is provided at the end of the outer side of the spiral shaft 6 along the position of the material plug inlet 3 to the end away from the feeding port 2.

[0020] In this embodiment, as Figure 1 shown, the main body includes a feeding cylinder 1 and a material plug cylinder 4 connected to the left side of the feeding cylinder 1. A material plug inlet 3 is provided on the left side surface of the feeding cylinder 1. The feeding cylinder 1 and the material plug cylinder 4 communicate with each other at the material plug inlet 3. A feeding port 2 is provided on the upper end surface of the feeding cylinder 1. A discharge port 5 is provided on the left end surface of the material plug cylinder 4, and the discharge port 5 is located above the material plug inlet 3. A spiral shaft 6 is installed inside the feeding cylinder 1. A left-handed blade 7 and a right-handed blade 8 are successively provided on the outer side surface of the spiral shaft 6 from top to bottom. The joint position of the left-handed blade 7 and the right-handed blade 8 is near the material plug inlet 3. During operation, materials enter the feeding cylinder 1 from the feeding hopper above the feeding port 2. The spiral shaft 6 drives the left-handed blade 7 and the right-handed blade 8 to rotate under the action of the connected driving mechanism. Since the left-handed blade 7 and the right-handed blade 8 are oppositely arranged, during rotation, the materials at the joint are subjected to the double extrusion of the left-handed blade 7 and the right-handed blade 8. The extruded materials are squeezed into the material plug cylinder 4 from the material plug inlet 3. A sealed material plug is formed in the material plug cylinder 4 during the process of the materials being transported upward from the material plug inlet 3 to the discharge port 5, completing the discharge sealing. The double extrusion effect of the left-handed blade 7 and the right-handed blade 8 on the materials on the spiral body enables the materials to be continuously extruded during the transportation process, effectively avoiding phenomena such as bridging and coking blockage in the feeding cylinder 1 and the material plug cylinder 4. The present invention realizes smooth discharge of materials while completing the material plug sealing. The double spiral blades can be applicable to materials with different properties generated by pyrolysis, avoiding the situation that the material plug is too tight or too loose. In addition, the discharge port 5 is set higher than the material plug inlet 3, shortening the distance between the discharge port 5 and the material plug. The materials can be quickly discharged from the discharge port 5, avoiding the condensation and precipitation of a large amount of pyrolysis products such as oil and water generated by pyrolysis. In other embodiments, as Figure 1 shown, the joint position of the left-handed blade 7 and the right-handed blade 8 is in the middle of the material plug inlet 3. The materials at the joint are subjected to the same extrusion force from above and below, making the formed state of the material plug more uniform and realizing stable and comprehensive discharge sealing.

[0021] As Figure 1 shown, in other embodiments, the main body further includes a transmission shaft seal 13 and a base 14. The transmission shaft seal 13 is provided on one side of the other end of the feeding cylinder 1 away from the feeding port 2 and is in transmission connection with the spiral shaft 6; the base 14 is respectively connected to the transmission shaft seal 13 and the feeding cylinder 1.

[0022] In other embodiments, asFigure 1 As shown, the main body is equipped with a drive shaft seal 13 and a base 14. The drive shaft seal 13 is installed below the material conveying cylinder 1 and is hermetically connected to the spiral shaft 6. The base 14 is installed at the bottom of the material conveying cylinder 1 and is fixedly connected to the drive shaft seal 13. In other embodiments, the material conveying cylinder 1 is vertically arranged above the base 14. The present invention can achieve more stable and faster material falling in the material conveying cylinder 1, and further achieve the upper discharge seal of the material. In other embodiments, the drive mechanism includes a bearing block 9, a chain 10, a sprocket 11, and an electric speed reducer 12. The bearing block 9 is installed below the material conveying cylinder 1. In order to better complete the connection with the spiral shaft 6, two bearing blocks 9 are provided along the spiral shaft 6 up and down. The chain 10 is connected to the spiral shaft 6 between the two bearing blocks 9. The electric speed reducer 12 is fixedly connected to the base 14 and / or the outer side of the material conveying cylinder 1. The chain 10 is connected to the electric speed reducer 12 through the sprocket 11.

[0023] As Figure 1 shown, in other embodiments, the spiral body further includes a baffle plate 15. The baffle plate 15 is connected to the other end of the spiral shaft 6 near the material conveying cylinder 1. The pitch diameter of the spiral shaft 6 at the connection with the baffle plate 15 is smaller than the pitch diameter of other parts of the spiral shaft 6 in the material conveying cylinder 1.

[0024] In other embodiments, as Figure 1 shown, the spiral body is fitted and clamped with a baffle plate 15 at the bottom of the bottom cylinder. The width of the baffle plate 15 matches the distance between the spiral shaft 6 and the inner wall of the bottom cylinder to prevent the material falling from the right-handed blade 8 from coking and blocking at the bottom of the bottom cylinder.

[0025] As Figure 1 shown, in other embodiments, the material plug cylinder 4 includes a material plug squeezing-in cylinder 401 and a material plug squeezing-out cylinder 402 that are connected to each other. The material plug squeezing-in cylinder 401 is arranged obliquely upward and is connected to the material conveying cylinder 1 through the material plug inlet 3 at the bottom; the material plug squeezing-out cylinder 402 is horizontally arranged above the material plug squeezing-in cylinder 401.

[0026] In other embodiments, as Figure 1 shown, the material plug cylinder 4 includes a horizontally arranged material plug squeezing-out cylinder 402 on the left and an obliquely arranged material plug squeezing-in cylinder 401 on the right. The left side opening of the material plug squeezing-out cylinder 402 is the discharge port 5. The material plug squeezing-in cylinder 401 is respectively connected to the material plug squeezing-out cylinder 402 and the material conveying cylinder 1. The material is squeezed into the material plug squeezing-in cylinder 401 from the material plug inlet 3 and continues to be squeezed and conveyed upward along the material plug squeezing-in cylinder 401. At the intersection of the material plug squeezing-in cylinder 401 and the material plug squeezing-out cylinder 402, the material plug turns and continues to be transported to the discharge port 5. While further shortening the distance between the discharge port 5 and the material plug, the present invention realizes multi-dimensional sealing between the material plug and the inner wall of the material plug cylinder 4, avoiding sealing failure caused by sealing holes generated by single-direction extrusion.

[0027] A specific embodiment of the present invention also provides a pyrolysis furnace, which includes a pyrolysis device, a feeding device, and a discharging device. The discharging device includes the above-mentioned discharging sealing device. The feeding port 5 of the discharging sealing device is connected to the pyrolysis product outlet of the pyrolysis device. In view of the adoption of the above-mentioned discharging sealing device, sealed discharging can be smoothly achieved, and the pyrolysis furnace has better safety and a longer operating life.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A discharge sealing device, characterized in that, Comprising: A main body, the main body includes a material feeding cylinder and a material plug cylinder. A material plug inlet communicating with one end of the material plug cylinder is provided on the side surface of the material feeding cylinder. A feed inlet is provided at one end of the material feeding cylinder. A discharge outlet is provided at the other end of the material plug cylinder. The height of the material plug inlet is lower than the height of the discharge outlet. A spiral body, the spiral body includes a spiral shaft, a left-handed blade, a right-handed blade and a driving mechanism. The spiral shaft is connected to the driving mechanism. The spiral shaft is arranged inside the material feeding cylinder along the length direction of the material feeding cylinder. A left-handed blade is provided on the outer side surface of the spiral shaft from the end near the feed inlet to the position where the material plug inlet is located. A right-handed blade is provided on the outer side surface of the spiral shaft from the position where the material plug inlet is located to the end away from the feed inlet direction.

2. The discharge sealing device according to claim 1, characterized in that, The junction of the left-handed blade and the right-handed blade is located in the middle of the material plug inlet.

3. The discharge sealing device according to claim 1, characterized in that, The main body further includes a transmission shaft seal and a base. The transmission shaft seal is arranged on one side of the other end of the material feeding cylinder away from the feed inlet direction and is hermetically connected to the spiral shaft. The base is respectively connected to the transmission shaft seal and the material feeding cylinder.

4. The discharge sealing device according to claim 3, characterized in that, The spiral body further includes a baffle plate. The baffle plate is connected to the spiral shaft in the direction of the other end of the material feeding cylinder. The diameter distance of the spiral shaft at the connection with the baffle plate is smaller than the diameter distance of the spiral shaft in other parts of the material feeding cylinder.

5. The discharge sealing device according to claim 4, characterized in that, The material feeding cylinder is vertically arranged above the base.

6. The discharge sealing device according to claim 5, characterized in that, The material plug cylinder includes a material plug squeezing-in cylinder and a material plug squeezing-out cylinder which are connected to each other. The material plug squeezing-in cylinder is arranged obliquely upward and is connected to the material feeding cylinder through the material plug inlet at the bottom. The material plug squeezing-out cylinder is horizontally arranged above the material plug squeezing-in cylinder.

7. A pyrolysis furnace, comprising a pyrolysis device, a feeding device, and a discharging device, characterized in that, The discharging device includes the discharging sealing device according to any one of claims 1-6. The feed inlet of the discharging sealing device is connected to the pyrolysis product outlet of the pyrolysis device.

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