Gas-solid separation device, micro-negative pressure ignition control device and sintering machine

Abstract

The utility model discloses a gas-solid separation device, a micro negative pressure ignition control device and a sintering machine, and belongs to the technical field of sintering equipment, the gas-solid separation device comprises a bin body, a gas bin, a material bin and a cinder valve, and a separation mechanism is arranged in the bin body; an inlet of the gas bin communicates with the air bellow, and an outlet of the gas bin communicates with the large flue. An inlet of the material bin communicates with the air bellow, and an outlet of the material bin communicates with the material collecting device. The cinder valve comprises at least two sealing mechanisms, and the two sealing mechanisms are arranged on the material bin; the gas bin and the material bin are formed in the bin body through separation of a separation mechanism, the separation mechanism extends to the position close to the inlet of the bin body, and projections of the inlet of the material bin and the inlet of the gas bin on the plane where the inlet of the bin body is located do not completely coincide. Structural arrangement can be simplified, materials enter the material bin, gas enters the gas bin, separation of the gas and the materials is achieved, abrasion to equipment when the gas carries the materials is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sintering equipment technology, and in particular to a gas-solid separation device, a micro-negative pressure ignition control device, and a sintering machine. Background Technology

[0002] In the sintering process, the ignition stage of the sintering machine is one of the key steps affecting the quality and yield of sintered products. To ensure the smooth progress of the sintering process, a slightly negative pressure environment is usually maintained during ignition. Specifically, the pressure in the ignition section's air box generally needs to be controlled within the range of -4 to -6 kPa, which is the pressure range of the slightly negative pressure environment during ignition, while the pressure in the sintering section's air box is maintained at around -16 kPa. This pressure gradient design aims to ensure a stable and efficient ignition process while avoiding process problems caused by abnormal pressure.

[0003] However, in actual production, if the negative pressure inside the ignition section's air box is too high, it will trigger a series of chain reactions: a large amount of cold air will invade the mixed material layer, causing the spherical gaps inside the material layer to be squeezed and solidified, significantly reducing air permeability. This phenomenon not only prolongs the ignition time but may also cause over-burning and scabbing on the surface of the material layer, hindering oxygen-containing air from entering the sintering section, ultimately leading to a reduction in vertical sintering speed and a double decline in sintering output and quality.

[0004] To address the aforementioned issues, maintaining a slightly negative pressure within the ignition section airbox has become an industry consensus. Its core advantages include:

[0005] 1. Reduce cold air intrusion: By precisely controlling the negative pressure, the interference of cold air on the material layer is effectively reduced, stabilizing the combustion environment;

[0006] 2. Optimize the permeability of the material layer: avoid excessive compaction of the material surface, increase the porosity of the material layer, and promote uniform gas distribution;

[0007] 3. Reduce energy consumption: Properly matching the air volume can reduce gas consumption during the ignition stage, thus achieving energy saving and consumption reduction;

[0008] 4. Improve sintering efficiency: While increasing the thickness of the material layer and the output, reduce the sintering coke ratio and optimize the thermal process;

[0009] 5. Enhance ignition quality: A stable micro-negative pressure environment helps improve ignition uniformity and reduce local over-burning or under-burning phenomena;

[0010] 6. Reduce return ore rate: Optimizing the material layer structure can reduce the generation of return ore and improve the yield of finished products.

[0011] Currently, most sintering machine micro-negative pressure regulation systems employ a dual-branch design: one branch controls the micro-negative pressure, while the other branch facilitates gas-solid separation through the loose material particles. However, existing technology has a significant drawback: incomplete separation of the granular material and gas leads to gas carrying granules that erodes the inner walls of the silo or pipelines, causing severe wear. This defect not only shortens the equipment's lifespan but also increases maintenance costs and downtime risks, hindering the stable operation and efficiency improvement of the sintering process.

[0012] To address the aforementioned technical bottlenecks, there is an urgent need to develop an efficient and stable micro-negative pressure control device to solve the equipment wear problem caused by incomplete separation of granular materials and gas, and further improve the reliability and economy of the sintering process. Utility Model Content

[0013] The purpose of this invention is to provide a gas-solid separation device, a micro-negative pressure ignition control device, and a sintering machine to solve the problems existing in the prior art. By setting up the gas chamber and the material chamber in the same chamber and optimizing the arrangement of the inlet of the material chamber and the inlet of the gas chamber, the structural setup can be simplified. The material enters into the material chamber, while the gas enters into the gas chamber, realizing the separation of gas and material, reducing the wear and tear on the equipment when the gas carries the material, and improving the service life of the equipment.

[0014] To achieve the above objectives, this utility model provides the following solution:

[0015] This utility model provides a gas-solid separation device, including a silo body, a gas silo, a material silo, and an ash discharge valve. A separating mechanism is provided within the silo body. The inlet of the gas silo is connected to a ventilation box, and the outlet of the gas silo is connected to a main flue. The inlet of the material silo is connected to the ventilation box, and the outlet of the material silo is connected to a material collection device. The ash discharge valve includes at least two sealing mechanisms, which are disposed on the material silo. The gas silo and the material silo are separated within the silo body by the separating mechanism, which extends to a position near the inlet of the silo body. The projections of the inlets of the material silo and the gas silo onto the plane of the inlet of the silo body do not completely coincide.

[0016] In one embodiment, the ash discharge valve includes two sealing mechanisms, namely a first chamber door and a second chamber door, wherein the first chamber door is connected to the inlet of the material silo and the second chamber door is connected to the outlet of the material silo.

[0017] In one embodiment, the first door seals the inlet of the material bin by gravity and negative pressure suction, and the second door seals the outlet of the material bin by gravity.

[0018] In one embodiment, the material silo includes a material discharge section, the outlet of which serves as the outlet of the material silo. The material discharge section is arranged at an angle downwards from one end closer to the material silo to the end farther away from the material silo. A first silo door is hinged to the top of the inlet of the material silo, and the opening direction of the first silo door faces the inside of the material silo. A second silo door is hinged to the top of the outlet of the material discharge section, and the opening direction of the second silo door faces the outside of the material silo.

[0019] In one embodiment, the material silo includes a main body section and a buffer section, the buffer section being located upstream of the main body section, and the ash discharge valve including two sealing mechanisms, namely a first silo door and a second silo door, the first silo door being connected to the outlet of the buffer section, and the second silo door being connected to the outlet of the main body section.

[0020] In one embodiment, the outlet of the buffer section is located in a horizontal plane or in a vertical plane. The ash discharge valve further includes a first counterweight, a second counterweight, and a switching mechanism. The first counterweight is connected to the first door and provides a component force for closing the first door. The second counterweight is connected to the second door and provides a component force for closing the second door. The switching mechanism includes a lever that can rotate under external force. The first door is connected to a first stop, and the second door is connected to a second stop. The first stop in the closed state and the second stop in the closed state are located on the rotation path of the lever. The rotation of the lever realizes the periodic opening and closing of the first door and the second door.

[0021] In one embodiment, the plane where the inlet of the chamber is located forms an angle with the vertical direction, the inlet of the material chamber is lower than the inlet of the gas chamber, the outlet of the material chamber and the inlet of the material chamber are located on the same side of the gas chamber, the gas trajectory in the gas chamber is a first trajectory, the material trajectory in the material chamber is a second trajectory, the second trajectory is located inside the first trajectory, and the inside refers to the side of the gas chamber near the bottom edge of the bellows.

[0022] This utility model provides a micro negative pressure ignition control device, including a gas-solid separation device as described above and an air volume regulating valve plate. The air volume regulating valve plate is located in the gas chamber and is used to regulate the gas flow rate through the gas chamber.

[0023] In one embodiment, the separating mechanism includes a vertical section and an inclined section connected to each other. The inclined section is used to separate the inlet of the gas chamber and the inlet of the material chamber. The angle between the inclined section and the vertical section is greater than or equal to the angle between the incoming air direction and the vertical section.

[0024] In one embodiment, the volume of the gas chamber is greater than the volume of the material chamber.

[0025] In one embodiment, the air volume regulating valve plate is a flap valve plate, which is hinged to the inner wall of the gas chamber via a rotating shaft and located in the lower middle part of the gas chamber. The flap valve plate is connected to a rotation drive mechanism.

[0026] In one embodiment, the projected length of the flap valve plate in the vertical plane is not less than the projected width of the gas chamber in the same vertical plane, and the free end of the flap valve plate away from the rotating shaft is attached to the inner wall of the gas chamber from bottom to top.

[0027] In one embodiment, a protective plate is further included, which is obliquely connected to the inner wall of the gas chamber where the rotating shaft is located, and the protective plate is located on the windward side of the rotating shaft to protect the rotating shaft.

[0028] In one embodiment, the airflow regulating valve plate is located inside the gas chamber and is used to regulate the gas flow rate through the gas chamber; the airflow regulating valve plate is a slide valve plate, which is used to move within the radial section of the gas chamber, and the slide valve plate is connected to a translational drive mechanism.

[0029] In one embodiment, the partition structure is a tubular structure that forms the gas chamber, which is located inside the material chamber.

[0030] In one embodiment, an air filter is also included, with the airflow regulating valve plate located between the air filter and the gas chamber, and the inlet diameter of the air filter gradually decreasing towards the airflow regulating valve plate.

[0031] In one embodiment, the inner bottom surface of the material bin is horizontally arranged, and the inner bottom surface can accumulate material to form a material protective layer;

[0032] And / or, the outer wall of the gas chamber is provided with a protective layer, which is wear-resistant and acid-resistant.

[0033] This utility model provides a sintering machine, including a micro negative pressure ignition control device, a wind box, and a large flue as described above, wherein the inlet of the chamber is connected to the wind box and the outlet of the gas chamber is connected to the large flue.

[0034] The present invention achieves the following technical advantages over the prior art:

[0035] This utility model's gas-solid separation device includes a chamber body, with a gas chamber and a material chamber located within the same chamber body and separated by a partition mechanism, simplifying the structural design. Simultaneously, the material chamber is equipped with at least two sealing structures, effectively preventing gas leakage while allowing material to pass through. Furthermore, the partition mechanism extends to a position near the inlet of the chamber body, and the inlets of the material chamber and the gas chamber are optimized in their arrangement so that their projections on the inlet plane of the chamber body do not completely overlap. This facilitates the separation of material and gas at the inlet position of the chamber body, allowing material to enter the material chamber and gas to enter the gas chamber, thus achieving gas-material separation. This reduces wear on the equipment caused by gas carrying material through it, extending the equipment's service life. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the installation structure of the micro-negative pressure ignition control device in the first embodiment of this utility model;

[0038] Figure 2 for Figure 1 Enlarged diagram of point A in the middle, where B refers to the inner side and C refers to the outer side;

[0039] Figure 3 This is a schematic diagram of the micro-negative pressure ignition control device in the first embodiment of this utility model;

[0040] Figure 4 This is a schematic diagram of the installation structure of the micro-negative pressure ignition control device in the second embodiment of this utility model;

[0041] Figure 5 This is a schematic diagram of the micro-negative pressure ignition control device in the second embodiment of this utility model;

[0042] Figure 6 As an embodiment of this utility model Figure 5 Top view;

[0043] Figure 7 This is a schematic diagram of another variation of the micro-negative pressure ignition control device in the second embodiment of this utility model;

[0044] Figure 8 This is a schematic diagram of another modified installation structure of the micro-negative pressure ignition control device according to the second embodiment of this utility model;

[0045] Figure 9 This is a schematic diagram of another variation of the micro-negative pressure ignition control device in the second embodiment of this utility model;

[0046] The components include: 1. bellows; 2. branch pipes; 3. micro-negative pressure ignition control device; 4. main flue; 5. trolley; and 6. pellet silo.

[0047] 30. Silo body; 31. Gas silo; 32. Lever; 33. First silo door; 34. Second silo door; 35. Material silo; 36. Material discharge section; 37. Flip valve plate; 38. Rotating shaft; 39. Protective plate; 310. First flange; 311. Second flange; 312. Separation mechanism; 313. Air filter; 314. Protective layer; 315. Reinforcing rib;

[0048] 321. Switching mechanism;

[0049] 351. Body segment; 352. Cache segment;

[0050] 3121. Inclined section; 3122. Vertical section;

[0051] 331. First counterweight; 332. First stop block; 341. Second counterweight; 342. Second stop block;

[0052] 371. Slide valve plate; 372. Translational drive mechanism. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] The purpose of this invention is to provide a gas-solid separation device, a micro-negative pressure ignition control device, and a sintering machine to solve the problems existing in the prior art. By setting up the gas chamber and the material chamber in the same chamber and optimizing the arrangement of the inlet of the material chamber and the inlet of the gas chamber, the structural setup can be simplified. The material enters into the material chamber, while the gas enters into the gas chamber, realizing the separation of gas and material, reducing the wear and tear on the equipment when the gas carries the material, and improving the service life of the equipment.

[0055] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] Example 1:

[0057] like Figures 1-9As shown, this utility model provides a gas-solid separation device, including a silo body 30, a gas silo 31, a material silo 35, and an ash discharge valve. The cross-section of the silo body 30 can be rectangular, trapezoidal, or other polygonal, circular, or elliptical, providing a certain internal capacity. A partitioning mechanism 312 is provided inside the silo body 30, which can be a partition, pipe, or other structure to divide the internal space into different compartments. The gas silo 31 contains mostly gas, but may also contain small amounts of particulate or powdered materials. The name "gas silo 31" should not be used to limit the medium it contains or flows through. The inlet of the gas silo 31 is connected to the ventilation box 1, either directly or via a branch pipe 2. The outlet of the gas silo 31 is connected to the main flue 4, also known as the main duct or gas collection duct, a key component in the sintering process, primarily responsible for collecting and transporting the high-temperature waste gas generated during sintering. The inlet of the material silo 35 is connected to the ventilation box 1. Since both the material silo 35 and the gas chamber 31 are located inside the silo body 30, the material silo 35 and the gas chamber 31 are connected to the ventilation box 1 through the same structure, i.e., the inlet of the silo body 30. The outlet of the material silo 35 is connected to a material collection device. The material collection device mentioned here can be a waste recycling bin, a material cart, or simply a ground for stacking materials. The ash discharge valve includes at least two sealing mechanisms. When two sealing mechanisms are provided (two sealing mechanisms are used as an example in this embodiment of the present invention), the two sealing mechanisms are set on the material silo 35. One sealing mechanism can be set at the inlet or inside of the material silo 35, and the other sealing mechanism is set at the outlet of the material silo 35. By controlling the two sealing mechanisms to not open at the same time, both material discharge and gas leakage from the material silo 35 can be achieved. Gas chamber 31 and material chamber 35 are separated within chamber body 30 by a separating mechanism 312. The separating mechanism 312 extends to a position near the inlet of chamber body 30. The projections of the inlet of material chamber 35 and the inlet of gas chamber 31 onto the plane of the inlet of chamber body 30 do not completely coincide. This incomplete coincidence includes at least two cases: partial coincidence and complete non-coincidence. In the former case, after the mixture of gas and material enters chamber body 30 through the inlet, some material enters material chamber 35, while gas can enter gas chamber 31. In the latter case, after the mixture of gas and material enters chamber body 30 through the inlet, most or all of the material enters material chamber 35, while gas can enter gas chamber 31. The latter case has a better effect on gas-solid separation than the former case. Therefore, if a better gas-solid separation effect is desired, the latter is preferred. Regardless of the aforementioned situation, by limiting the inlets of the material bin 35 and the gas bin 31 to the plane where the inlet of the bin body 30 is located, this utility model allows materials to enter the material bin 35 better under the action of gravity, effectively separating gas and solid.

[0058] This utility model's gas-solid separation device includes a chamber 30, with a gas chamber 31 and a material chamber 35 located within the same chamber 30 and separated by a partition mechanism 312, simplifying the structural design. The material chamber 35 is equipped with at least two sealing structures, effectively preventing gas leakage while allowing material to pass through. Furthermore, the partition mechanism 312 extends to a position near the inlet of the chamber 30. The inlets of the material chamber 35 and the gas chamber 31 are optimized in their arrangement, ensuring that their projections on the inlet plane of the chamber 30 do not completely overlap. This facilitates the separation of material and gas at the inlet of the chamber 30, allowing material to enter the material chamber 35. Thus, material enters the material chamber 35, while gas enters the gas chamber 31, achieving gas-material separation. This reduces wear on the equipment caused by gas carrying material through it, extending the equipment's service life.

[0059] In one implementation, such as Figures 1-3 As shown, the ash discharge valve includes two sealing mechanisms: a first door 33 and a second door 34. The first door 33 and the second door 34 can be in the form of a flap structure or a cover structure, etc. The first door 33 is connected to the inlet of the material silo 35. For example... Figure 2 and Figure 3 As shown in the diagram, the dashed line indicates the closed position of the first door 33. In this closed state, the first door 33 remains vertical, forming a triangular cavity between it and the inner wall of the material bin 35. This cavity can store some separated materials. As the accumulated material increases, its own weight pushes the first door 33 open, allowing the material to enter the material bin 35. The second door 34 is connected to the outlet of the material bin 35. When the material inside the bin 35 accumulates to a certain level, its own weight pushes the second door 34 open, discharging the material outside the bin 35. By placing the first door 33 and the second door 34 at the inlet and outlet of the material bin 35, sufficient volume is ensured, enabling batch accumulation and intermittent discharge of materials, effectively processing and discharging them. In this example, the installation angle of the second door 34 (the angle between the second door 34 and the vertical plane) is controlled between 0° and 35°. When it is greater than 0°, the outlet plane of the material bin 35 is inclined upward to ensure that the second door 34 can close the outlet of the material bin 35 under its own weight.

[0060] In one implementation, such as Figures 1-3As shown, the first door 33 and the second door 34 can be controlled by a power mechanism to open or close. In this example, the gas-solid separation device is used in a negative pressure environment. In this case, the first door 33 relies on its own weight (or an additional counterweight) and the negative pressure suction within the device to seal the inlet of the material bin 35. When the weight of the accumulated material is greater than the weight of the first door 33 and the negative pressure suction it experiences, the first door 33 can be opened smoothly. The second door 34 relies on its own weight (or an additional counterweight) to seal the outlet of the material bin 35. When the weight of the accumulated material is greater than the weight of the second door 34, the second door 34 can be opened smoothly. The above method of controlling the opening and closing of the first door 33 and the second door 34 can be achieved without an additional power mechanism, simplifying the structure and reducing manufacturing and maintenance costs.

[0061] In one implementation, such as Figures 1-3 As shown, the material silo 35 includes a material discharge section 36. The material discharge section 36 can be located inside the silo body 30 or extend to the outside of the silo body 30. The outlet of the material discharge section 36 serves as the outlet of the material silo 35. That is, after the material inside the main body of the material silo 35 flows to the material discharge section 36, it is discharged through the second door 34 at the outlet of the material discharge section 36. The material discharge section 36 is inclined downward from the end closer to the material silo 35 to the end farther away from the material silo 35. That is, the material discharge section 36 is inclined downward towards the outlet of the material silo 35. The inclination helps the material flow in the material discharge section 36, so that the material can flow to the second door 34 under its own weight. Finally, after the material accumulates to a certain extent, it overcomes the weight of the second door 34 and opens the second door 34. In this example, the angle between the material discharge section 36 and the horizontal plane is between 15° and 75°, which can effectively ensure the flow of the material in the material discharge section 36.

[0062] In one implementation, such as Figures 1-3 As shown, both the first door 33 and the second door 34 are opened by rotation. Taking the first door 33 as an example, the flip shaft can be connected to the top of the first door 33, and the first door 33 is opened by the action of the material. In this example, the first door 33 is hinged to the top of the inlet of the material bin 35, and the opening direction of the first door 33 is towards the inside of the material bin 35. The second door 34 is hinged to the top of the outlet of the material discharge section 36, and the opening direction of the second door 34 is towards the outside of the material bin 35.

[0063] In one implementation, such as Figures 4-7As shown, the material bin 35 includes a main body section 351 and a buffer section 352. The buffer section 352 is located upstream of the main body section 351, meaning that the material first enters the buffer section 352 and then enters the main body section 351. In practice, the buffer section 352 can be formed by moving the first door 33 towards the second door 34, or the main body section 351 can be formed by extending and connecting the buffer section 352. In this case, the buffer section 352 is located inside the bin body 30, while the main body section 351 can be located outside the bin body 30. Two sealing mechanisms are the first door 33 and the second door 34. The first door 33 is connected to the outlet of the buffer section 352 to control whether the material enters the main body section 351 from the buffer section 352, and the second door 34 is connected to the outlet of the main body section 351 to control whether the material is discharged from the main body section 351. The buffer section 352 improves the material storage capacity of the material bin 35. The main body section 351 can be used only as a discharge valve. After the material accumulates in the buffer section 352, the material covers the inner wall of the buffer section 352, reducing the wear of the inner wall caused by the material flow.

[0064] In one implementation, such as Figures 4-7 As shown, the outlet of buffer segment 352 is set in the horizontal plane ( Figure 7 (as shown) or set in the vertical plane ( Figure 5 As shown, both configurations can achieve material discharge. The ash discharge valve also includes a first counterweight 331 and a second counterweight 341. The first counterweight 331 is connected to the first door 33. When the first door 33 is set in a vertical plane, the first counterweight 331 is set on the outside of the first door 33, i.e., in the opening direction. In this way, under natural conditions, the first counterweight 331 can provide the closing force of the first door 33. When the first door 33 is set in a horizontal plane, the first door 33 and the first counterweight 331 are located on both sides of the door hinge of the first door 33. At this time, the torque of the first counterweight 331 should be greater than the torque of the first door 33, so that the first door 33 is pushed from bottom to top at the outlet of the buffer section 352 under the action of the first counterweight 331. In this way, it is more conducive to the material entering the main body section 351 from the buffer section 352 under the action of gravity. The second counterweight 341 is connected to the second compartment door 34, similar to the way the first compartment door 33 is set vertically. The second counterweight 341 is set on the outside of the second compartment door 34, i.e. the opening direction. In this way, under natural conditions, the second counterweight 341 can provide the component force for closing the second compartment door 34.

[0065] In one implementation, such as Figures 4-7As shown, the ash discharge valve also includes a switching mechanism 321. The power source of the switching mechanism 321 is not limited and can be electric, pneumatic, or hydraulically driven. In this example, the switching mechanism 321 can be electrically driven, such as by a motor. The switching mechanism 321 also includes a lever 32, which is connected to the drive end of the switching mechanism 321. In this example, the motor drives the lever 32 to rotate, and the rotation speed of the lever 32 can be controlled. The lever 32 can have a structure with an arc-shaped working surface so that after rotating to a certain position, the arc-shaped working surface can be used to gradually push the corresponding stop, and after rotating to the next position, it can disengage from the stop. The stop mentioned here is the first stop 332 and the second stop 342 mentioned below. The first compartment door 33 is connected to a first stop block 332, and the angle between the first stop block 332 and the first compartment door 33 remains fixed. The second compartment door 34 is connected to a second stop block 342, and the angle between the second stop block 342 and the second compartment door 34 remains fixed. The first stop block 332 in the closed state and the second stop block 342 in the closed state are located on the rotation path of the lever 32. Thus, the rotation of the lever 32 can be used to overcome the gravity of the first counterweight 331 and the second counterweight 341, so as to realize the periodic opening and closing of the first compartment door 33 and the second compartment door 34.

[0066] In one implementation, such as Figures 1 to 7 As shown, the silo body 30 is generally vertically positioned. The plane of the inlet of the silo body 30 forms an angle with the vertical direction. In this configuration, the inlet of the silo body 30 is connected obliquely upwards to equipment such as the bellows 1. The inlet of the material silo 35 is lower than the inlet of the gas silo 31. The mixture of gas and material will preferentially reach the inlet of the material silo 35; that is, under the influence of gravity, the material preferentially enters the material silo 35, achieving more efficient gas-solid separation. The outlet of the material silo 35 is located on the same side as the inlet of the gas silo 31 (within the plane of the gas silo 31). Figure 3 Taking the direction shown as an example, the outlet and inlet of the material bin 35 are located on the right side of the gas bin 31. The gas trajectory in the gas bin 31 is the first trajectory, and the material trajectory in the material bin 35 is the second trajectory. The second trajectory is located inside the first trajectory. The inside refers to the side of the gas bin 31 closest to the bottom edge of the bellows 1, that is, the side where the bottom edge of the bellows 1 is located at the connection between the bellows 1 and the bin body 30 (e.g., Figure 2(Point B refers to the inner side, and point C refers to the outer side). By adopting the above configuration, the gas can move along a longer first trajectory, while the material moves along a relatively shorter second trajectory. The gas and material are separated at the inlet of the chamber 30, effectively reducing wear on the inner wall of the equipment when the gas carries a large amount of material. Reducing the material's trajectory length further reduces wear on the inner wall of the equipment. Increasing the gas trajectory length increases the gas turning radius, reducing resistance and obstruction to gas flow, and reducing wear caused by the gas carrying trace amounts of material in the gas chamber 31. The first and second trajectories can adopt arc-shaped, C-shaped, zigzag, or U-shaped shapes, the key being to reduce the flow path and scouring force of the material and the gas containing the material, thereby reducing wear.

[0067] Example 2:

[0068] like Figures 1-9 As shown, this utility model provides a micro-negative pressure ignition control device, including a gas-solid separation device as described above and an airflow regulating valve plate. The airflow regulating valve plate is located inside the gas chamber 31 and is used to regulate the gas flow rate through the gas chamber 31. The airflow regulating valve plate can adopt various known forms, such as movable, flip-plate, and folding structures. By using the gas-solid separation device mentioned above, the gas-solid separation effect can be improved, and the amount of material entering the gas chamber 31 can be reduced, thereby effectively reducing the wear and tear on the gas chamber 31 when adjusting the airflow (negative pressure state) and improving the service life of the equipment.

[0069] In one embodiment, gas-solid separation and micro-negative pressure regulation are integrated into a single design. Gas flows to the upper gas chamber 31. In this example, a fully automatic micro-negative pressure electrical control device is provided. The position of the airflow regulating valve plate is controlled by the micro-negative pressure fully automatic electrical control device to control the flow rate, thereby achieving the purpose of regulating the airflow to control the negative pressure. When the negative pressure reaches the set requirement, the valve opening automatically stops at the scale position, the system starts to work normally, and the computer data enters the automatic memory state, eliminating the need for further adjustment.

[0070] In one implementation, such as Figures 1-3As shown, after the gas-solid mixture enters the gas-solid separation device, the material tends to flow downwards under its own weight and enter the material hopper 35. When the accumulated weight of the material exceeds the negative pressure suction force of the first hopper door 33, the first hopper door 33 automatically opens, allowing the material to enter the material hopper 35. Simultaneously, the first hopper door 33 automatically closes under its own weight and negative pressure, enabling the device to complete the gas-solid separation and storage of the material without leakage. When the weight of the material in the material hopper 35 exceeds the negative pressure suction force of the second hopper door 34, the second hopper door 34 automatically opens, completing the automatic unloading. The entire process can complete the gas-solid separation and discharge without personnel or equipment. This device can regulate the negative pressure of the system and allow the material to exit the hopper in a timely manner, enabling the device to smoothly complete the low negative pressure of the micro-negative pressure ignition stage while simultaneously disposing of the material, thus improving the safety performance and extending the service life of the device.

[0071] In one implementation, such as Figures 1-3 As shown, the separating mechanism 312 includes at least a vertical section 3122 and an inclined section 3121 connected to each other. The vertical section 3122 is mainly used to determine the volume of the gas chamber 31 and the material chamber 35, while the inclined section 3121 is mainly used to guide and separate the gas and material in the direction of the incoming airflow. The inclined section 3121 extends to the inlet of the chamber body 30, separating the inlet of the gas chamber 31 from the inlet of the material chamber 35, allowing the material to enter the material chamber 35 under gravity, while the gas and a very small amount of material enter the gas chamber 31. The angle between the inclined section 3121 and the vertical section 3122 is greater than or equal to the angle between the direction of the incoming airflow and the vertical section 3122. This significantly reduces the scouring effect of the airflow on the inclined section 3121, reduces the resistance of the airflow entering the gas chamber 31, and effectively improves the gas-solid separation effect. In this example, the angle between the vertical section 3122 and the inclined section 3121 is between 130° and 160°. The air volume and negative pressure can be precisely calculated during the design process as needed. When the air volume is very small, the wind speed entering the gas chamber 31 will be very low, which will significantly reduce the scouring of the gas chamber 31. At the same time, the cleanliness of the air is improved due to the settling of large particles, which also reduces the scouring of the air to the gas chamber 31 and improves the service life of the gas chamber 31.

[0072] In one implementation, such as Figures 1-3 As shown, the volume of the gas chamber 31 is larger than that of the material chamber 35, which helps to reduce the wind speed. In a preferred embodiment, the volume ratio of the gas chamber 31 to the material chamber 35 can be set to 2:1, that is, the gas chamber 31 occupies approximately 2 / 3 of the total volume of the chamber 30, and the material chamber 35 occupies approximately 1 / 3 of the total volume of the chamber 30.

[0073] In one embodiment, the airflow regulating valve plate can be the slide valve plate 371 in Embodiment 3. The specific structure is described in Embodiment 3 and will not be repeated here. In this example, as... Figures 1-3As shown, the airflow regulating valve plate adopts a flap valve plate 37, which is hinged to the inner wall of the gas chamber 31 via a rotating shaft 38. The flap valve plate 37 is connected to a rotation drive mechanism, which can be electric or manual and can be equipped with a feedback adjustment mechanism, that is, the opening degree of the flap valve plate 37 can be adjusted according to the magnitude of the negative pressure. The flap valve plate 37 can be set at any position in the gas chamber 31, as long as it can achieve the effect of opening and closing. In this example, the flap valve plate 37 is set in the lower middle part of the gas chamber 31, and the position of the flap valve plate 37 is preferably above the outlet of the gas chamber 31 and greater than or equal to the length of the flap valve plate 37. When the angle of the flap valve plate 37 is adjusted, the airflow will change, and the negative pressure will change accordingly. Setting the flap valve plate 37 in the lower middle part of the gas chamber 31 can reduce the scouring effect of the material carried in the airflow on the gas chamber 31 and reduce the maintenance frequency of the micro negative pressure ignition control device 3.

[0074] In one implementation, such as Figures 1-3 As shown, the projected length of the flap valve plate 37 in the vertical plane is not less than the projected width of the gas chamber 31 in the same vertical plane. In other words, the length of the flap valve plate 37 is not less than the width of the gas chamber 31 in the horizontal plane. The free end of the flap valve plate 37 away from the rotating shaft 38 adheres to the inner wall of the gas chamber 31 from bottom to top, achieving the effect of sealing the gas passage. When the flap valve plate 37 rotates downwards, the gas passage can be opened. The rotation angle of the flap valve plate 37 can control the opening size of the gas passage, thereby ultimately controlling the negative pressure. In this example, the projected length of the flap valve plate 37 in the vertical plane is greater than the projected width of the gas chamber 31 in the same vertical plane, meaning the length of the flap valve plate 37 is greater than the width of the gas chamber 31 in the horizontal plane. When the flap valve plate 37 is in the closed state, it tilts downwards as a whole. Therefore, the flap valve plate 37 has an angle with the incoming airflow, preventing it from being directly impacted by the incoming airflow and reducing its influence.

[0075] In one implementation, such as Figures 1-3 As shown, it also includes a protective plate 39, which is inclinedly connected to the inner wall of the gas chamber 31 where the rotating shaft 38 is located. The protective plate 39 is located on the windward side of the rotating shaft 38. On the one hand, it prevents the material carried by the airflow from scouring the rotating shaft 38, and on the other hand, it prevents the material carried by the airflow from falling onto the rotating shaft 38 and affecting its rotation, thus protecting the rotating shaft 38 and improving the service life of the flap valve plate 37. The protective plate 39 is inclined in the direction of airflow, matching the airflow in the gas chamber 31, and its inclination direction is roughly consistent with that of the flap valve plate 37, forming a guiding effect on the airflow. This reduces the resistance to airflow, reduces the impact force on the protective plate 39, and also extends the service life of the protective plate 39.

[0076] Example 3:

[0077] like Figures 1-9 As shown, this utility model provides a micro-negative pressure ignition control device, including a gas-solid separation device as described above and an airflow regulating valve plate. The airflow regulating valve plate is located inside the gas chamber 31 and is used to regulate the gas flow rate through the gas chamber 31. The airflow regulating valve plate can adopt various known forms, such as movable, flip-plate, and folding structures. By using the gas-solid separation device mentioned above, the gas-solid separation effect can be improved, and the amount of material entering the gas chamber 31 can be reduced, thereby effectively reducing the wear and tear on the gas chamber 31 when adjusting the airflow (negative pressure state) and improving the service life of the equipment.

[0078] The air volume regulating valve plate can be the flap valve plate 37 in Embodiment 2. The specific structure is described in Embodiment 2 and will not be repeated here. In this example, as... Figures 4-9 As shown, the airflow regulating valve plate adopts a slide gate valve plate 371, which moves within the radial section of the gas chamber 31. The slide gate valve plate 371 is connected to a translational drive mechanism 372. The translational drive mechanism 372 can be in the form of an electric / pneumatic telescopic cylinder, a linear motor, a rotary cam, etc., or it can be manually adjusted. By changing the area of ​​the airflow channel blocked by the slide gate valve plate 371, the flow rate of the gas chamber 31 is changed, thereby regulating the negative pressure environment. The above-mentioned method of controlling the negative pressure by adjusting the opening of the slide gate valve plate 371, combined with the translational drive mechanism 372, has a high degree of automation. The dust content (carrying material amount) of the dust-laden gas is also reduced, reducing the scouring of the inner wall of the gas chamber 31 and effectively extending the service life of the gas chamber 31.

[0079] In one implementation, such as Figures 4-9 As shown, when the amount of material in the material bin 35 increases, its weight increases, increasing the pressure on the branch pipe 2 or the air box 1, requiring periodic unloading. The switching mechanism 321, under the control of a PLC (Programmable Logic Controller), can automatically unload within a set time. The first bin door 33 and the second bin door 34 are automatically opened and closed by the electric switching mechanism 321. Under the action of the motor, the first bin door 33 opens, and under the action of the first counterweight 331, the first bin door 33 closes automatically. When the motor rotates to a specific position, the second bin door 34 opens automatically, unloading the material in the material bin 35 from the second bin door 34. At the same time, the second bin door 34 closes automatically under its own weight (or in conjunction with the second counterweight 341). One of the two bin doors is always closed, preventing negative pressure leakage and ensuring that the overall negative pressure remains stable. This is beneficial for the effective circulation of clean air and ensures that heavy particles enter the material bin 35 in a reasonable and orderly manner, resulting in a longer service life, easier adjustment, simpler installation, reduced maintenance costs, and long-term use of the equipment.

[0080] In one implementation, such as Figures 4-9 As shown, the separating mechanism 312 adopts a tubular structure, such as a square tube or a round tube. The slide valve plate 371 moves radially along the tubular structure, and the interior of the tubular structure serves as a gas chamber 31. At this time, the gas chamber 31 is located inside the material chamber 35, forming a structure in which the gas chamber 31 is surrounded by the material chamber 35. The gas carrying the material surrounds the gas chamber 31, which has a significant impact on the erosion of the outer wall of the gas chamber 31. Therefore, a protective layer 314 can be provided on the outer wall of the gas chamber 31. The protective layer 314 has wear resistance and acid resistance, which can effectively protect the gas chamber 31. In this example, the protective layer 314 is made of sprayed paint. The sprayed paint has high strength and acid resistance. The high strength can reduce the erosion of the outer wall of the gas chamber 31 by the particulate material, and the acid resistance can reduce the corrosive effect of sulfur-containing gas and particles on the outer wall of the gas chamber 31. Thus, the sprayed paint can protect the gas chamber 31 and increase its service life. The sprayed paint has a tortoise shell mesh as a skeleton. At the same time, the sprayed paint is wear-resistant and acid-resistant. The spray thickness is 35mm to 50mm, and the spray height is based on the height of the gas chamber 31, which is generally designed to be 200mm to 500mm.

[0081] In one embodiment, the pipeline structure extends out of the bottom plate of the chamber 30, and the extended portion is connected and fixed by reinforcing ribs 315. The reinforcing ribs 315 are connected to the outer wall of the pipeline structure and the outer wall of the bottom plate to facilitate the stability of the pipeline structure.

[0082] In one implementation, such as Figures 4-9 As shown, the system also includes an air filter 313 for filtering out materials from the gas. A gate valve plate 371 is located between the air filter 313 and the gas chamber 31. This means that the relatively pure gas, after being filtered by the air filter 313, enters the gas chamber 31 after passing through the gate valve plate 371, thereby reducing erosion and wear on the inner wall of the gas chamber 31. The air filter 313 can employ porous filter cotton, filter packing, or other structures. When using granular packing, a mesh structure can be installed at the inlet of the air filter 313 to prevent the granular packing from scattering. Furthermore, considering the effect of negative pressure in practical applications, if the granular packing can be well adsorbed and fixed on the air filter 313, a mesh structure at the inlet is not necessary. To prevent material from clogging the inlet of the air filter 313, the inlet plane of the air filter 313 can be set to be inclined downwards or vertically downwards, allowing material falling into the inlet of the air filter 313 to fall into the material bin 35 by gravity. In this example, the diameter of the inlet end of the air filter 313 gradually decreases towards the gate valve plate 371, that is, the inlet of the air filter 313 is set to be larger than the subsequent pipe, meaning the inlet is relatively large. This design can reduce the air velocity, thereby reducing wear on the air filter 313 and the gas bin 31.

[0083] In one implementation, such as Figures 4-9 As shown, the inner bottom surface of the material bin 35 is horizontally set, which can accumulate materials. Under the action of gravity, the materials will concentrate on the inner bottom surface and hardly flow, forming a material protection layer. On the one hand, it reduces the direct impact of materials on the inner bottom surface, and on the other hand, it can reduce the splashing of materials after impacting the inner bottom surface. Thus, it protects both the inner bottom surface and the inner side surface, achieving protection for the entire bin 30.

[0084] In one implementation, such as Figure 8 and Figure 9 As shown, the inlet of material bin 35 and the inlet of gas bin 31 are staggered, meaning their projections onto the plane containing the inlet of bin 30 (which is also the inlet of material bin 35) are not completely coincident. In this example, the inlet of material bin 35 is higher than the inlet of gas bin 31, and the two inlets are staggered (completely non-coincident), with the first trajectory located inside the second trajectory. This structure also achieves efficient separation of gas and material. In this example, the inlet and outlet of material bin 35 are located on the same side of gas bin 31. After entering material bin 35 through its inlet, the material automatically accumulates below the inlet. Placing the outlet and inlet of material bin 35 on the same side of gas bin 31 facilitates the discharge of material from material bin 35. When the inlet and outlet of material bin 35 are not on the same side of gas bin 31, the bottom plate of material bin 35 can be tilted downwards towards the outlet to guide the material to accumulate at the outlet, facilitating discharge. By placing the inlet and outlet of material silo 35 on the same side of gas silo 31, the structure becomes more rational and the processing and production become simpler.

[0085] Example 4:

[0086] like Figures 1-9 As shown, this utility model provides a sintering machine, including a micro-negative pressure ignition control device 3, a bellows 1, and a large flue 4 as described above. The inlet of the chamber 30 is directly or indirectly connected to the bellows 1, and the outlet of the gas chamber 31 is directly or indirectly connected to the large flue 4. Therefore, by controlling the micro-negative pressure ignition control device 3, the micro-negative pressure environment of the bellows 1 can be adjusted.

[0087] In one embodiment, a branch pipe 2 is provided, which is connected to a bellows 1. The bellows 1 is located below a trolley 5 containing materials. A granular silo 6 is located below the trolley 5 on the empty lane, and the granular silo 6 is used to collect residual materials on the trolley 5. The branch pipe 2 is set in an inclined state. When it is connected to the micro-negative pressure ignition control device 3, it is connected to the inlet of the chamber 30 through the inclined connection port. During the connection, the inlet of the chamber 30 is provided with a first flange 310, and the outlet of the gas chamber 31 is provided with a second flange 311. The first flange 310 is connected to the branch pipe 2, and the second flange 311 is connected to another branch pipe 2 leading to the main flue 4. The connection method of the first flange 310 and the second flange 311 makes installation and maintenance convenient and quick. The flanges are easy to connect to the branch pipe 2, and the first flange 310 and the second flange 311 are easy to install and connect, achieving a user-friendly design.

[0088] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A gas-solid separation device, characterized in that, include: The storage body (30) is provided with a partition mechanism (312) inside the storage body (30); Gas chamber (31), the inlet of which is used to connect to ventilation box (1), and the outlet of which is used to connect to large flue (4); Material bin (35), the inlet of which is connected to ventilation box (1), and the outlet of which is connected to material collection device; And an ash discharge valve, the ash discharge valve including at least two sealing mechanisms, the sealing mechanisms being disposed on the material silo (35); The gas chamber (31) and the material chamber (35) are separated within the chamber body (30) by the separating mechanism (312), which extends to a position near the inlet of the chamber body (30). The projections of the inlet of the material chamber (35) and the inlet of the gas chamber (31) onto the plane where the inlet of the chamber body (30) is located do not completely coincide.

2. The gas-solid separation device according to claim 1, characterized in that: The ash discharge valve includes two sealing mechanisms, namely a first door (33) and a second door (34). The first door (33) is connected to the inlet of the material silo (35), and the second door (34) is connected to the outlet of the material silo (35).

3. The gas-solid separation device according to claim 2, characterized in that: The first door (33) seals the inlet of the material bin (35) by gravity and negative pressure suction, and the second door (34) seals the outlet of the material bin (35) by gravity.

4. The gas-solid separation device according to claim 2, characterized in that: The material silo (35) includes a material discharge section (36), the outlet of which serves as the outlet of the material silo (35). The material discharge section (36) is inclined downward from one end near the material silo (35) to the other end away from the material silo (35). The first silo door (33) is hinged to the top of the inlet of the material silo (35), and the opening direction of the first silo door (33) faces the inside of the material silo (35). The second silo door (34) is hinged to the top of the outlet of the material discharge section (36), and the opening direction of the second silo door (34) faces the outside of the material silo (35).

5. The gas-solid separation device according to claim 1, characterized in that: The material silo (35) includes a main body section (351) and a buffer section (352). The buffer section (352) is located upstream of the main body section (351). The ash discharge valve includes two sealing mechanisms, namely a first silo door (33) and a second silo door (34). The first silo door (33) is connected to the outlet of the buffer section (352), and the second silo door (34) is connected to the outlet of the main body section (351).

6. The gas-solid separation device according to claim 5, characterized in that: The outlet of the buffer section (352) is located in a horizontal plane or in a vertical plane. The ash discharge valve also includes a first counterweight (331), a second counterweight (341), and a switching mechanism (321). The first counterweight (331) is connected to the first door (33) and is used to provide the closing force of the first door (33). The second counterweight (341) is connected to the second door (34) and is used to provide the closing force of the second door (352). 4) Closing force; The switching mechanism (321) includes a lever (32) that can rotate under external force. The first compartment door (33) is connected to a first stop (332), and the second compartment door (34) is connected to a second stop (342). The first stop (332) in the closed state and the second stop (342) in the closed state are located on the rotation path of the lever (32). The rotation of the lever (32) realizes the periodic opening and closing of the first compartment door (33) and the second compartment door (34).

7. The gas-solid separation device according to claim 1, characterized in that: The plane where the inlet of the chamber (30) is located has an angle with the vertical direction. The inlet of the material chamber (35) is lower than the inlet of the gas chamber (31). The outlet of the material chamber (35) and the inlet of the material chamber (35) are located on the same side of the gas chamber (31). The gas trajectory in the gas chamber (31) is the first trajectory, and the material trajectory in the material chamber (35) is the second trajectory. The second trajectory is located inside the first trajectory. The inside refers to the side of the gas chamber (31) that is close to the bottom edge of the bellows (1).

8. A micro-negative pressure ignition control device, characterized in that, include: The gas-solid separation device as described in any one of claims 1-7; And an airflow regulating valve plate, which is located inside the gas chamber (31) and is used to regulate the gas flow rate through the gas chamber (31).

9. The micro-negative pressure ignition control device according to claim 8, characterized in that: The separation mechanism (312) includes a vertical section (3122) and an inclined section (3121) connected to each other. The inclined section (3121) is used to separate the inlet of the gas chamber (31) and the inlet of the material chamber (35). The angle between the inclined section (3121) and the vertical section (3122) is greater than or equal to the angle between the incoming wind direction and the vertical section (3122).

10. The micro-negative pressure ignition control device according to claim 8, characterized in that: The volume of the gas chamber (31) is greater than the volume of the material chamber (35).

11. The micro-negative pressure ignition control device according to claim 8, characterized in that: The air volume regulating valve plate adopts a flap valve plate (37), which is hinged to the inner wall of the gas chamber (31) through a rotating shaft (38) and located in the lower middle part of the gas chamber (31). The flap valve plate (37) is connected to a rotation drive mechanism.

12. The micro-negative pressure ignition control device according to claim 11, characterized in that: The projected length of the flap valve plate (37) in the vertical plane is not less than the projected width of the gas chamber (31) in the same vertical plane, and the free end of the flap valve plate (37) away from the rotating shaft (38) is attached to the inner wall of the gas chamber (31) from bottom to top.

13. The micro-negative pressure ignition control device according to claim 11, characterized in that: It also includes a protective plate (39), which is obliquely connected to the inner wall of the gas chamber (31) where the rotating shaft (38) is located. The protective plate (39) is located on the windward side of the rotating shaft (38) to protect the rotating shaft (38).

14. The micro-negative pressure ignition control device according to claim 8, characterized in that: The air volume regulating valve plate adopts a slide valve plate (371), which is used to move within the radial section of the gas chamber (31). The slide valve plate (371) is connected to a translational drive mechanism (372).

15. The micro-negative pressure ignition control device according to claim 8 or 14, characterized in that: The separation mechanism is a tubular structure that forms the gas chamber (31), which is located inside the material chamber (35).

16. The micro-negative pressure ignition control device according to claim 15, characterized in that: It also includes an air filter (313), the air volume regulating valve plate is located between the air filter (313) and the gas chamber (31), and the inlet end of the air filter (313) gradually decreases in diameter towards the air volume regulating valve plate.

17. The micro-negative pressure ignition control device according to claim 15, characterized in that: The inner bottom surface of the material bin (35) is horizontally arranged, and the inner bottom surface can accumulate materials to form a material protective layer; And / or, the outer wall of the gas chamber (31) is provided with a protective layer (314), which is wear-resistant and acid-resistant.

18. A sintering machine, characterized in that, include: The micro negative pressure ignition control device as described in any one of claims 8-17; The bellows (1) is connected to the inlet of the chamber (30); And a large flue (4), the outlet of the gas chamber (31) is connected to the large flue (4).

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