Adjustable high-temperature steam directional permeation device for sintering round roller stock bin

Abstract

An adjustable high-temperature steam directional permeation device for a sintering round roller stock bin comprises a directional permeation spray gun system which comprises an adjustable spray gun; one end of the adjustable spray gun is located in the round roller stock bin, and the acting force of materials in the round roller stock bin on the adjustable spray gun at least comprises a component which is in the axial direction of the adjustable spray gun and points to the inner side of the round roller stock bin; the other end of the adjustable spray gun is located outside the round roller stock bin and used for being connected with a steam source. According to the device, the adjustable spray gun is inserted into the round roller bin to conduct steam injection on materials, steam directly reaches a core area of a material layer, steam heat is almost completely absorbed by the materials, heat energy loss is low, and the temperature of the materials is greatly increased; the material is heated by steam from the inner layer of the material, and the thickness of an over-wet layer is obviously reduced because the steam is uniformly dispersed. The spray gun device solves the problem that in the prior art, a spray gun device in a round roller stock bin is poor in preheating effect.

Description

Technical Field

[0001] This invention relates to the technical field of metallurgical sintering engineering, and more specifically, to an adjustable high-temperature steam directional permeation device for sintering roller silos. Background Technology

[0002] In the sintering process, the material in the roller hopper needs to be preheated with steam to improve its permeability and reduce fuel consumption. However, traditional steam systems have gradually revealed some technical defects, such as: 1. Low steam utilization rate: The spray gun used for steam output is fixed to the surface of the roller hopper wall, and its setting angle and depth cannot be adjusted. Therefore, the spray gun can only spray steam into a fixed area, resulting in steam only acting on the surface material and insufficient deep penetration. The preheating temperature is also low, with an increase of only 10℃-15℃; 2. Risk of sealing failure: The spray gun is fixed to the hopper wall without reinforcement. The steam back pressure may cause the spray gun to detach from the hopper wall, threatening production safety with high-pressure steam overflow; 3. High maintenance costs: The spray gun is installed in a fixed manner. If the material clogs the spray gun, the machine needs to be stopped for disassembly and repair, which seriously affects the sintering production efficiency. In addition, the spray gun uses rigid pipes, which require frequent replacement due to corrosion. Summary of the Invention

[0003] (a) Technical issues In summary, how to solve the problem of poor preheating effect of the spray gun device in the existing roller hopper has become an urgent problem to be solved by those skilled in the art.

[0004] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: This invention relates to the field of metallurgical sintering engineering technology, specifically to a device that enables high-temperature steam to penetrate directionally into the interior of the sintering material layer through an adjustable steam lance, for improving the preheating efficiency of materials in a roller silo.

[0005] In this invention, an adjustable high-temperature steam directional permeation device for sintering roller hoppers is specifically provided, comprising: A directional infiltration spray gun system, the directional infiltration spray gun system including an adjustable spray gun; One end of the adjustable spray gun is located inside the cylindrical roller hopper, and the force exerted by the material inside the cylindrical roller hopper on the adjustable spray gun includes at least a component along the axial direction of the adjustable spray gun and pointing towards the inside of the cylindrical roller hopper. The other end of the adjustable spray gun is located outside the roller hopper and is used to connect to a steam source.

[0006] Preferably, the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention further includes a double-stage locking sealing sleeve. The double-stage locking sealing sleeve includes a fixed guide sleeve, which is disposed on the outside of the roller hopper and fixedly disposed on the hopper wall of the roller hopper. The adjustable spray gun is adjustablely disposed inside the fixed guide sleeve.

[0007] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, a locking screw is provided on the fixed guide sleeve. One end of the locking screw passes through the fixed guide sleeve and can abut against the adjustable spray gun, for fixing the adjustable spray gun in the fixed guide sleeve.

[0008] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, the double-stage locking sealing sleeve further includes a dynamic sealing sleeve. The dynamic sealing sleeve is fitted onto the outside of the adjustable spray gun and connected to the fixed guide sleeve. A lead packing is provided inside the dynamic sealing sleeve. The lead packing is press-fitted between the dynamic sealing sleeve and the fixed guide sleeve, and the lead packing is airtightly connected to the adjustable spray gun.

[0009] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, one end of the fixed guide sleeve is fixedly disposed on the hopper wall of the roller hopper, the other end of the fixed guide sleeve is provided with a flange structure, the end of the dynamic sealing sleeve facing the fixed guide sleeve is provided with an installation groove, the lead packing is disposed in the installation groove, the outer edge of the end of the dynamic sealing sleeve facing the fixed guide sleeve is provided with a flange structure, and the fixed guide sleeve and the dynamic sealing sleeve are connected through the flange structure.

[0010] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, the locking screw is located at the middle position of the axial direction of the fixed guide sleeve, and multiple locking screws are provided, all of which are equally spaced around the axis of the fixed guide sleeve.

[0011] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, the adjustable spray gun is inclined, and the angle between the adjustable spray gun and the horizontal plane is in the range of 10° to 20°.

[0012] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hoppers provided by the present invention, a three-way unblocking interface is provided at one end of the adjustable spray gun located outside the roller hopper. The three-way unblocking interface includes a first connector, a second connector, and a third connector. The first connector and the second connector are coaxially arranged, and the axis of the third connector passes through and is perpendicular to the axes of the first connector and the second connector. The first connector is connected to the adjustable spray gun, the second connector is provided with a plug, and the third connector is connected to a steam source. The adjustable spray gun can be unblocked through the second connector by passing through the first connector.

[0013] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, the adjustable spray guns are arranged in groups of two, with the two adjustable spray guns in the same group symmetrically arranged on both sides of the roller hopper. Multiple groups of adjustable spray guns are provided, and the multiple groups of adjustable spray guns are arranged at equal intervals.

[0014] Preferably, in the adjustable high-temperature steam directional permeation device for sintering roller hopper provided by the present invention, the distance between one end of the adjustable spray gun located in the roller hopper and the lowest end of the roller hopper is not less than 300mm.

[0015] (III) Beneficial Effects Through the above structural design, the adjustable high-temperature steam directional permeation device for sintering round roller hopper provided by the present invention has the following beneficial effects: 1. An adjustable spray gun is inserted into the cylindrical roller hopper to inject steam into the material. The steam reaches the core area of ​​the material layer, and almost all the heat from the steam is absorbed by the material, resulting in low heat loss and a significant increase in material temperature. 2. Steam heating of the material from the inner layer significantly reduces the thickness of the over-wet layer due to uniform steam dispersion. 3. A dual-stage sealing structure (fixed guide sleeve and dynamic sealing sleeve) prevents steam leakage, resulting in significant steam elimination. 4. Bolt locking and packing clamping can withstand a 0.5MPa steam back pressure, making the adjustable spray gun setting more stable and ensuring safety. After practical application, this invention solves the problem of poor preheating effect in existing spray gun devices in cylindrical roller hoppers. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein: Figure 1 This is a schematic diagram of the overall structure of the adjustable high-temperature steam directional permeation device for sintering roller silos installed on the silo wall in an embodiment of the present invention. Figure 2This is a simplified cross-sectional diagram of the adjustable spray gun on the wall of the roller hopper in an embodiment of the present invention; Figure 3 This is a layout diagram of the adjustable high-temperature steam directional permeation device for sintering roller silos installed on the silo wall in an embodiment of the present invention.

[0017] exist Figure 2 In the diagram, the adjustable spray gun is set at a relatively large angle on the roller hopper. The purpose of this illustration is to highlight that the adjustable spray gun has an inclined structure.

[0018] exist Figures 1 to 3 In the diagram, the correspondence between component names and reference numerals is as follows: 1. Adjustable spray gun; 2. Circular roller hopper; 3. Fixed guide sleeve; 4. Locking screw; 5. Dynamic sealing sleeve; 6. Lead packing; 7. T-junction unblocking interface; 8. Plug; 9. High-temperature metal hose; 10. Circular roller distributor; 11. Shut-off valve. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. Indeed, those skilled in the art will recognize that modifications and variations can be made to the invention without departing from its scope or spirit. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the invention encompass such modifications and variations falling within the scope of the appended claims and their equivalents.

[0020] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] Please refer to Figures 1 to 3 ,in, Figure 1 This is a schematic diagram of the overall structure of the adjustable high-temperature steam directional permeation device for sintering roller silos installed on the silo wall in an embodiment of the present invention. Figure 2 This is a simplified cross-sectional diagram of the adjustable spray gun on the wall of the roller hopper in an embodiment of the present invention; Figure 3This is a layout diagram of the adjustable high-temperature steam directional permeation device for sintering roller silos installed on the silo wall in an embodiment of the present invention.

[0022] This invention provides an adjustable high-temperature steam directional permeation device for sintering cylindrical roller silos. The adjustable high-temperature steam directional permeation device for sintering cylindrical roller silos comprises the following components: 1. Directional penetration spray gun system.

[0023] The main function of the directional penetration spray gun system is to deliver steam (high-temperature steam) provided by the steam source to the roller hopper 2, thereby preheating the material in the roller hopper 2 with steam.

[0024] In one specific embodiment of the present invention, the directional permeation spray gun system includes an adjustable spray gun 1. The adjustable spray gun 1 adopts a long, straight, stainless steel tube structure. One end (which can be understood as the front end) of the adjustable spray gun 1 is provided with a jet outlet (which can be designed as a beveled cut to effectively solve the problem of material clogging the jet outlet). The front end of the adjustable spray gun 1 passes through the wall of the roller hopper 2 and is located inside the roller hopper 2. The other end of the adjustable spray gun 1 is located outside the roller hopper 2 and is used to connect to a steam source.

[0025] The structure of the roller hopper 2 is as follows: The roller hopper 2 includes a roller distributor 10, which is horizontally arranged, that is, the axis of the roller distributor 10 is parallel to the horizontal plane; the roller hopper 2 is arranged above the roller distributor 10. The roller hopper 2 includes two parts: the upper part is funnel-shaped and used to load materials, and the lower part is a rectangular tube or cylinder structure. The upper end of the lower part is connected to the lower end of the upper part. The lower end of the lower part is provided with an opening, which is set directly opposite the roller distributor 10. There is a certain gap between the opening at the lower end of the roller hopper 2 and the roller distributor 10. By rotating the roller distributor 10, stable output and uniform distribution of materials can be achieved.

[0026] After passing through the roller hopper 2, the material is distributed by the roller distributor 10. The material flows from top to bottom within the roller hopper 2. The front end of the adjustable spray gun 1 is located inside the roller hopper 2. The force exerted by the material on the adjustable spray gun 1 during the flow process includes at least a component along the axial direction of the adjustable spray gun 1 and pointing towards the inside of the roller hopper 2. Specifically, within the roller hopper 2, the material flows downwards, contacts the adjustable spray gun 1, and exerts a downward frictional force on it. This frictional force acting on the adjustable spray gun 1 can be decomposed into two force components. The first force component is parallel to the axis of the adjustable spray gun 1, and the second force component is perpendicular to the axis of the adjustable spray gun 1. The first force component is the aforementioned "component along the axial direction of the adjustable spray gun 1 and pointing towards the inside of the roller hopper 2". Due to the presence of the first force component, the adjustable spray gun 1 has a tendency to move toward the inside of the roller hopper 2, thereby reducing the possibility of the adjustable spray gun 1 falling out of the roller hopper 2.

[0027] Specifically, the present invention employs the following structural measures to achieve the design objective of "a component along the axial direction of the adjustable spray gun 1 pointing towards the inner side of the roller hopper 2". Structure 1: The adjustable spray gun 1 is inclined, meaning that in the height direction, one end (front end) of the adjustable spray gun 1 within the hopper is lower than the other end. Structure 2: A guide plate is provided at the portion of the adjustable spray gun 1 located in the roller hopper 2. The material rubs against the guide plate, which is inclined (the side of the guide plate near the middle of the roller hopper 2 is lower than the side near the hopper wall). The guide plate generates a force component that drives the adjustable spray gun 1 towards the inner side of the roller hopper 2. Further, in the first structural design, the adjustable spray gun 1 is inclined, and the angle between the adjustable spray gun 1 and the horizontal plane ranges from 10° to 20°, preferably 9° or 15°.

[0028] 2. Double-stage locking sealing sleeve.

[0029] An opening is provided on the wall of the roller hopper 2 corresponding to the position where the adjustable spray gun 1 is installed. In order to install the adjustable spray gun 1 stably and with high airtightness on the hopper wall, the present invention provides a double-stage locking sealing sleeve, which realizes two-stage locking of the adjustable spray gun 1.

[0030] Specifically, the double-stage locking sealing sleeve includes a fixed guide sleeve 3, which is disposed on the outside of the cylindrical roller hopper 2 and fixedly disposed on the hopper wall of the cylindrical roller hopper 2. The adjustable spray gun 1 is adjustablely disposed inside the fixed guide sleeve 3. The fixed guide sleeve 3 is made of stainless steel and has a cylindrical structure. The front end of the fixed guide sleeve 3 is provided with a beveled cut so that when the fixed guide sleeve 3 is tilted, its front opening can be airtightly connected with the hopper wall of the cylindrical roller hopper 2. After the fixed guide sleeve 3 is disposed on the hopper wall, a sealing structure is provided at its connection point, such as increasing the welding range, increasing the welding thickness, or, for example, providing a sealing ring. One end of the fixed guide sleeve 3 is fixedly mounted on the wall of the cylindrical roller hopper 2, and the other end of the fixed guide sleeve 3 is provided with a flange structure. The dynamic sealing sleeve 5 has an installation groove at the end facing the fixed guide sleeve 3, and a lead packing 6 is installed in the installation groove. The outer edge of the end of the dynamic sealing sleeve 5 facing the fixed guide sleeve 3 is provided with a flange structure. The fixed guide sleeve 3 and the dynamic sealing sleeve 5 are connected through the flange structure (after the fixed guide sleeve 3 and the flange structure on the dynamic sealing sleeve 5 are connected, they are fixedly assembled by bolts and nuts). The double-stage locking sealing sleeve also includes a dynamic sealing sleeve 5, which is fitted onto the outside of the adjustable spray gun 1 and connected to the fixed guide sleeve 3. A lead packing 6 is provided inside the dynamic sealing sleeve 5, and the lead packing 6 is press-fitted between the dynamic sealing sleeve 5 and the fixed guide sleeve 3. The lead packing 6 is airtightly connected to the adjustable spray gun 1.

[0031] Both the fixed guide sleeve 3 and the dynamic sealing sleeve 5 are integrally formed from stainless steel. A lead packing 6 is provided on the dynamic sealing sleeve 5. After the dynamic sealing sleeve 5 and the fixed guide sleeve 3 are connected, the lead packing 6 is pressed between the dynamic sealing sleeve 5 and the fixed guide sleeve 3 to achieve the first seal. The lead packing 6 is installed on the adjustable spray gun 1 to achieve the second seal. The above two seals can greatly reduce steam leakage.

[0032] Furthermore, the present invention provides a locking screw 4 on the fixed guide sleeve 3. The locking screw 4 and the fixed guide sleeve 3 are connected by a threaded structure. One end of the locking screw 4 passes through the fixed guide sleeve 3 and abuts against the adjustable spray gun 1 to fix the adjustable spray gun 1 within the fixed guide sleeve 3. Further, the locking screw 4 is located at the middle position of the axial direction of the fixed guide sleeve 3, and multiple locking screws 4 are provided (preferably two, but also three or four), with all locking screws 4 evenly spaced around the axis of the fixed guide sleeve 3.

[0033] 3. T-junction unblocking interface 7.

[0034] A three-way unblocking interface 7 is provided at one end of the adjustable spray gun 1 located outside the roller hopper 2. The three-way unblocking interface 7 is a one-piece stainless steel structure. The three-way unblocking interface 7 includes a first connector, a second connector, and a third connector. The first connector and the second connector are coaxially arranged, and the axis of the third connector passes through the axes of the first connector and the second connector and is perpendicular to them. The first connector is connected to the adjustable spray gun 1 (it can be a threaded connection, a flange connection, or a welded connection). A plug 8 is detachably provided on the second connector (preferably a threaded connection, but it can also be an interference fit that is directly inserted into the second connector). The third connector is connected to a steam source (through a stainless steel flange high-pressure high-temperature metal hose 9). The adjustable spray gun 1 can be unblocked through the second connector and the first connector.

[0035] In this invention, adjustable spray guns 1 are arranged in groups of two, with the two adjustable spray guns 1 in the same group symmetrically arranged on both sides of the cylindrical roller hopper 2. Multiple groups of adjustable spray guns 1 are provided. Preferably, there are six groups of adjustable spray guns 1, totaling 12, but four or eight groups can also be used, adjusted according to steam demand. Of course, the adjustable spray guns 1 can also be redundantly configured, allowing them to be shut down when demand is low, thus ensuring steam pressure while reducing energy consumption while meeting production needs. Multiple groups of adjustable spray guns 1 are arranged at equal intervals along a direction parallel to the axis of the cylindrical roller distributor 10. Each adjustable spray gun 1 is equipped with a corresponding double-stage locking sealing sleeve fitted onto the wall of the cylindrical roller hopper 2.

[0036] Specifically, the distance between one end of the adjustable spray gun 1 located inside the roller hopper 2 and the lowest end of the roller hopper 2 is not less than 300mm.

[0037] This invention provides an adjustable high-temperature steam directional permeation device for sintering round roller hoppers. In this invention, the directional permeation device comprises the following components: 1. Directional penetration spray gun system.

[0038] The directional penetration spray gun system includes an adjustable spray gun 1, which is made of DN25 stainless steel pipe, 500mm long. The adjustable spray gun 1 has a long, straight, round pipe structure. One end of the adjustable spray gun 1 passes through the silo wall and is located inside the roller silo 2. The other end of the adjustable spray gun 1 is the tail end, which is equipped with a three-way unblocking interface 7. The three-way unblocking interface 7 is a stainless steel tee with three connectors. For ease of description, these three connectors are defined as the first connector, the second connector, and the third connector. The first and second connectors are coaxial, and the axis of the third connector passes through and is perpendicular to the axes of the first and second connectors. The first connector is used to connect to the adjustable spray gun 1. The second connector is equipped with a DN25 removable plug 8 (stainless steel plug 8). The third connector is used to connect to a high-temperature metal hose 9 for receiving high-temperature, high-pressure steam. During normal production operation, the removable plug 8 on the second connector closes the second connector. High-temperature, high-pressure steam enters from the third connector, exits from the first connector, and is sprayed into the roller silo 2 through the adjustable spray gun 1.

[0039] The third connector is used to connect to the steam source, specifically using a flexible connection method. That is, this invention uses a 40MPa-resistant stainless steel high-temperature metal hose 9 (800mm long) for connection. Specifically, one end of the high-temperature metal hose 9 is connected to the third connector, and the other end of the high-temperature metal hose 9 is equipped with a shut-off valve 11, which is connected to the steam source. It should be noted that the high-temperature metal hose 9 in this invention has an adjustment margin between the shut-off valve 11 and the third connector, thereby supporting the free expansion and contraction of the adjustable spray gun 1 within the material layer.

[0040] 2. Double-stage locking sealing sleeve.

[0041] The double-stage locking sealing sleeve is used for the installation, adjustment, and fixation of the adjustable spray gun 1 on the bin wall. Specifically, the double-stage locking sealing sleeve includes a fixed guide sleeve 3, which is a metal round tube with an inner diameter of 33mm. One end of the fixed guide sleeve 3 is fixed (welded) to an opening in the bin wall (the opening is set at the position for installing the adjustable spray gun 1), and the other end is provided with a mating flange. A locking screw 4 (M12 stainless steel bolt) is provided on the tube body of the fixed guide sleeve 3. The locking screw 4 is located at the axial center of the fixed guide sleeve 3 and is arranged vertically (or three or four can be arranged at equal intervals around the outer side of the fixed guide sleeve 3). The adjustable spray gun 1 is inserted into the fixed guide sleeve 3, and then its insertion depth is locked by the locking screw 4.

[0042] To further improve the sealing performance of the adjustable spray gun 1 installed on the silo wall, this invention also includes a dynamic sealing sleeve 5 on the fixed guide sleeve 3. The dynamic sealing sleeve 5 comprises an annular sealing sleeve body, with an installation groove on the bottom surface of the sealing sleeve body. A high-temperature resistant lead packing 6 is installed within the installation groove. A flange structure is provided on the outer edge of the bottom surface of the sealing sleeve body for docking with the tail end of the fixed guide sleeve 3. This invention connects the dynamic sealing sleeve 5 to the tail end of the fixed guide sleeve 3 via a flange. The dynamic sealing sleeve 5 contains the high-temperature resistant lead packing 6, and zero steam leakage can be achieved after the dynamic sealing sleeve 5 is compressed.

[0043] This invention also optimizes the spatial layout of the adjustable spray gun 1: the adjustable spray gun 1 is inserted into the material bin at a 15° angle to the horizontal plane (this angle can be adjusted according to production needs, and the preferred angle range for the adjustable spray gun 1 is 10° to 20°). The depth of the adjustable spray gun 1 inserted into the roller hopper 2 is adjustable. Specifically, the distance between the nozzle of the adjustable spray gun 1 and the lowest point of the hopper bottom is preferably 300mm. A total of 12 adjustable spray guns are symmetrically and evenly arranged on both sides of the roller hopper 2, i.e., 6 on each side. All adjustable spray guns 1 arranged on one side are evenly spaced along the horizontal direction. The end of the adjustable spray gun 1 penetrates deep into the material layer, allowing steam to directly penetrate the high-density area.

[0044] The adjustable high-temperature steam directional permeation device for sintering roller silos provided by this invention has the following directional permeation process: The high-temperature shut-off valve 11 (J40H / W-40P DN25) is opened, and steam is delivered to the adjustable spray gun 1 via the high-temperature metal hose 9. The adjustable spray gun 1 extends and retracts freely, and the material flow pushes the spray gun to move within the material layer (the adjustable spray gun 1 is tilted, and the material contacts the adjustable spray gun 1 and applies a downward frictional force to it. This frictional force has a component along the axial direction of the adjustable spray gun 1, which allows the adjustable spray gun 1 to tend to move towards the center of the roller silo 2. This tendency ensures the stability of the adjustable spray gun 1 on the roller silo 2, prevents the adjustable spray gun 1 from detaching from the silo wall, and effectively avoids material blockage at the outlet of the adjustable spray gun 1). Steam permeates directionally upwards from the bottom of the silo. The lead packing 6 is pressed onto the fixed guide sleeve 3 through the dynamic sealing sleeve 5. The lead packing 6 is in close contact with the outer wall of the adjustable spray gun 1 (with static friction). When the adjustable spray gun 1 tends to move towards the middle of the roller hopper 2 during the material flow, the lead packing 6 will press further onto the tail end of the fixed guide sleeve 3. In this way, the lead packing 6 can adaptively compensate for the gap and always maintain a sealed state.

[0045] This invention also has the function of online unblocking operation. The specific operation process is as follows: close the shut-off valve 11; remove the stainless steel plug 8 set at the tail of the adjustable spray gun 1; insert a cleaning rod to unclog; resume operation after unblocking, which can realize unblocking without stopping the machine throughout the process.

[0046] As described above, the present invention provides an adjustable high-temperature steam directional permeation device for sintering roller hoppers, comprising: a directional permeation spray gun system, the directional permeation spray gun system including an adjustable spray gun 1; one end of the adjustable spray gun 1 is located inside the roller hopper 2, and the force exerted by the material inside the roller hopper 2 on the adjustable spray gun 1 includes at least a component along the axial direction of the adjustable spray gun 1 and pointing towards the inside of the roller hopper 2; the other end of the adjustable spray gun 1 is located outside the roller hopper 2 and is used to connect to a steam source.

[0047] Through the above structural design, the present invention has at least the following beneficial effects: 1. Breakthrough in penetration efficiency: The adjustable spray gun 1 is inserted into the cylindrical roller hopper 2 at an angle to perform steam injection, and the steam directly reaches the core of the material layer. Actual verification shows that the material temperature can be increased by 30°C (twice as high as the traditional method). Due to the uniform dispersion of steam, the thickness of the over-wet layer is significantly reduced (by about 40%). 2. Improved safety and reliability: A dual-stage sealing structure (fixed guide sleeve 3 as the first stage, dynamic sealing sleeve 5 and lead packing 6 as the second stage) is set to prevent steam leakage, and the steam elimination effect is obvious (on-site mist elimination rate ≥95%). At the same time, the bolt locking and packing compression can resist the 0.5MPa steam back force, making the setting of the adjustable spray gun 1 more stable and ensuring safety. 3. Advantages in lifespan and maintenance: The entire structure is made of stainless steel (valve / hose / spray gun / sealing sleeve), which is resistant to high-temperature corrosion at 180°C, and the service life is extended (by about 3 times). At the same time, it can achieve uninterrupted cleaning, and the cleaning time is significantly shortened (from 2 hours to 10 minutes, reducing annual downtime by 200 hours).

[0048] The specific workflow of this invention is as follows: High-temperature and high-pressure steam (pressure 0.4MPa, temperature 160℃) is regulated by the high-temperature shut-off valve 11 and then transported to the tee port at the tail of the adjustable spray gun 1 through a stainless steel flange metal-coated hose (DN25 PN40, length 800mm). The adjustable spray gun 1 (DN25 stainless steel pipe, length 500mm) is inserted at a 15° angle into the sealing sleeve assembly welded to the lower part of the Φ5m round roller hopper 2 (12 adjustable spray guns are evenly distributed 300mm from the lowest point of the hopper bottom), and the insertion depth is locked by the M12 bolts of the fixed guide sleeve 3 to prevent the spray gun from coming out due to the steam backflow. Under the extrusion of the material, the adjustable spray gun 1 retracts freely into the material layer by 50-200mm, allowing the steam to diffuse directionally upward from the bottom of the hopper to the core area of ​​the material layer, achieving the following effects: 1. The material temperature rises from 35℃ to 65℃ (an increase of 30℃), and the thickness of the wetted layer is reduced by 40%; 2. The steam condensation rate decreases by 60%, and the on-site mist elimination rate is ≥95%. The unblocking operation of this invention is as follows: When the spray gun is blocked by material, close the high temperature shut-off valve 11, then remove the three-way plug 8 at the tail of the spray gun, insert a Φ20mm cleaning rod to remove the mineral powder, and finally reinstall the plug 8 and restart the system (the whole process takes ≤15 minutes and does not require shutdown).

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable high temperature steam directional infiltration device for sintering round roller bins, characterized by, Comprise: A directional permeation spray gun system, comprising an adjustable spray gun (1); One end of the adjustable spray gun is located in a circular roller bin (2), and the force of the material in the circular roller bin on the adjustable spray gun at least includes a component along the axial direction of the adjustable spray gun and pointing to the inside of the circular roller bin; The other end of the adjustable spray gun is located outside the circular roller bin for connection with a steam source.

2. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 1, further comprising a two-stage locking sealing sleeve, wherein the two-stage locking sealing sleeve comprises a fixed guide sleeve (3) arranged outside the circular roller bin, the fixed guide sleeve is fixedly arranged on the bin wall of the circular roller bin, and the adjustable spray gun is adjustably arranged in the fixed guide sleeve.

3. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 2, wherein a locking screw (4) is arranged on the fixed guide sleeve, one end of the locking screw passes through the fixed guide sleeve and abuts against the adjustable spray gun to fix the adjustable spray gun in the fixed guide sleeve.

4. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 1, wherein the two-stage locking sealing sleeve further comprises a dynamic sealing sleeve (5) sleeved outside the adjustable spray gun and connected with the fixed guide sleeve, a lead packing (6) is arranged in the dynamic sealing sleeve, the lead packing is press-fitted between the dynamic sealing sleeve and the fixed guide sleeve, and the lead packing is in airtight connection with the adjustable spray gun.

5. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 4, wherein one end of the fixed guide sleeve is fixedly arranged on the bin wall of the circular roller bin, the other end of the fixed guide sleeve is provided with a flange structure, one end of the dynamic sealing sleeve towards the fixed guide sleeve is provided with a mounting groove, the lead packing is arranged in the mounting groove, and the other end of the dynamic sealing sleeve towards the fixed guide sleeve is provided with a flange structure, and the fixed guide sleeve and the dynamic sealing sleeve are butted through the flange structures.

6. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 3, wherein the locking screw is arranged at the middle position of the axial direction of the fixed guide sleeve, and a plurality of locking screws are arranged at equal intervals around the axis of the fixed guide sleeve.

7. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 1, wherein the adjustable spray gun is arranged obliquely, and the included angle between the adjustable spray gun and the horizontal plane ranges from 10° to 20°.

8. The adjustable high-temperature steam directional permeation device for sintering circular roller bins according to claim 1, ​ ​ ​ ​ ​ ​ A three-way unblocking interface (7) is arranged at one end of the adjustable lance outside the circular roller stock bin, the three-way unblocking interface comprises a first joint, a second joint and a third joint, the first joint and the second joint are coaxially arranged, the axis of the third joint passes through the axes of the first joint and the second joint and is perpendicular to the axes; The first joint is connected with the adjustable lance, a plug (8) is arranged on the second joint, and the third joint is connected with a steam source; The adjustable lance can be unblocked through the first joint via the second joint.

9. The adjustable high-temperature steam directional permeation device for a sintering circular roller stock bin according to claim 1, characterized in that The adjustable lances are arranged in two groups, the two adjustable lances in the same group are symmetrically arranged on the two sides of the circular roller stock bin, and multiple groups of adjustable lances are arranged at equal intervals.

10. The adjustable high-temperature steam directional permeation device for a sintering circular roller stock bin according to claim 1, characterized in that The distance between one end of the adjustable lance inside the circular roller stock bin and the lowest end of the circular roller stock bin is not less than 300 mm.

Images