Feeding bin and application thereof

Abstract

The invention relates to the field of chemical equipment, and discloses a feeding bin and application thereof. The feeding bin comprises a bin body, at least one discharging roller set and an arch breaking device. A feeding port is formed in the top of the bin body, and a discharging port is formed in the bottom of the bin body. The at least one blanking roller group is arranged in the bin body and is used for loosening slag materials entering the bin body from the feeding hole; the arch breaking device is arranged at the bottom of the bin body and comprises a rotating table and at least two loosening mechanisms, the at least two loosening mechanisms are sequentially arranged in the height direction of the rotating table, each loosening mechanism comprises an arc-shaped material crushing arm and a plurality of first material crushing cutters, one end of each material crushing arm is fixedly connected with the peripheral wall of the rotating table, and the other end of each material crushing arm is fixedly connected with the rotating table; the arc inner side face of the material crushing arm faces the rotating table, and the multiple first material crushing cutters are arranged along the arc outer side of the material crushing arm at intervals. The material crushing arm comprises a plurality of arc-shaped plates which are arranged in an overlapped mode and a plurality of hoops, and the arc-shaped plates are fixed into a whole through the hoops to form the material crushing arm. The feeding bin can loosen materials and achieve continuous feeding.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, and in particular to a feed bin and an application thereof. Background Art

[0002] Gasification fine slag is a solid discharge with a certain moisture content in the coal gasification production process. It mainly comes from the clarification tank of the ash water treatment system of the gasification device. The slurry (containing gasification fine slag) at the bottom of the clarification tank is dehydrated to form fine slag. The fine slag has a porous structure, small particle size, high intrinsic moisture, and is difficult to dehydrate and dry. In the past, traditional designs usually used common dehydration equipment and processes such as vacuum belt filters and horizontal screw centrifuges to treat it, but the actual effect was poor. The fine slag after dehydration has a high moisture content (about 50%). If there is no further dehydration facility, the fine slag has relatively poor formability and fluidity. The fine slag leaks during vehicle transportation and delivery, causing pollution along the transportation line. Especially in winter, the leakage of water-containing fine slag can easily cause ice on the road surface and freeze the filter slag into blocks, affecting the unloading operation.

[0003] In addition, due to the high moisture content of fine slag, it is difficult to pile it high, which will affect the storage capacity of the slag yard, and it is easy to cause landslides, dam breaches and other phenomena, which poses a safety hazard. At the same time, the water carried away by the fine slag also causes a waste of water resources in the system. If the fine slag is dried naturally in the slag yard, the process takes a long time and is prone to dust, which causes great environmental pollution.

[0004] With the continuous updating and optimization of technology, some process equipment can reduce the moisture content of fine slag from 50% to below 30%, and increase the calorific value of fine slag to more than 1000kcal / kg, making the fine slag eligible for resource recycling. However, the problem of the feeding system of fine slag follows. At present, there is still no equipment or system in the coal gasification industry that can be used to store fine slag materials separately and feed them reliably. The silo of the boiler is commonly used, but the silo is a device used to store materials such as raw materials and additives. During the operation of the boiler, it provides the required materials for the boiler. The silo is one of the main auxiliary equipment in the power industry. The silo is one of the indispensable equipment on the production line. Its main function is not just to store materials, but more importantly, to provide continuous, stable and accurate material supply for subsequent processes.

[0005] The commonly used silos now mostly adopt steel funnel structure, and the steel funnel is lined with 304 stainless steel plate to prevent the material from hanging on the wall and sticking, and to increase the fluidity of the material. However, most of the materials stored in the silos of conventional power plants are thermal coal, and the total water content of thermal coal is less than 15% when received, and the particle size of fuel coal is generally above 5mm, which has a certain fluidity. The objective disadvantages of the existing technology are as follows:

[0006] First of all, there is no storage and feeding method for low-moisture gasifier fine slag materials in the industry. It is just borrowed from the boiler silo of power station. Due to the difference in the physical properties of the fuel, it cannot be fully used.

[0007] The moisture content of gasifier slag is about 28%, and because the particle size of the gasifier is extremely fine, d(50) = 80um. Due to the high moisture content and fine particle size, the commonly used steel hopper silo cannot solve the problems of gasifier slag bridging, compaction, and wall hanging.

[0008] Gasification fine slag is extremely abrasive, and the material of the storage and feeding system of on-site technology cannot meet the use requirements of fine slag. After running for a period of time, it will cause wear and failure of parts in contact with materials such as the silo, affecting the stable operation of production.

[0009] In view of this, the present invention is proposed. Summary of the invention

[0010] The object of the present invention is to provide a feed bin and application thereof, aiming to improve at least one problem mentioned in the background technology.

[0011] The present invention is achieved in that:

[0012] In a first aspect, the present invention provides a feeding bin, comprising a bin body, at least one set of unloading rollers and an arch breaking device;

[0013] A feed inlet is provided at the top of the bin body, and a discharge outlet is provided at the bottom of the bin body;

[0014] At least one set of unloading rollers is arranged in the bin body, and is used to loosen the slag entering the bin body from the feed inlet;

[0015] The arch breaking device is arranged at the bottom of the silo body, and includes a rotating table and at least two loosening mechanisms, and the at least two loosening mechanisms are arranged in sequence along the height direction of the rotating table, and each loosening mechanism includes an arc-shaped crushing arm and a plurality of first crushing knives, one end of the crushing arm is fixedly connected to the peripheral wall of the rotating table, and the other end extends to the side wall close to the silo body, the inner side of the arc of the crushing arm faces the rotating table, and the plurality of first crushing knives are arranged at intervals along the outer side of the arc of the crushing arm;

[0016] The crushing arm comprises a plurality of hoops and a plurality of stacked arc plates, and the plurality of arc plates are fixed as a whole by the plurality of hoops to form the crushing arm.

[0017] In an optional embodiment, the arch breaking device also includes a plurality of material guide plates, which are fixedly arranged on the upper surface of the rotating table in a circular array. Each material guide plate is arc-shaped. When working, the arc outer side surface of each material guide plate is the front surface of the slag, and the arc outer side surface of each crushing arm is the front surface of the slag.

[0018] In an optional embodiment, each aerating mechanism further comprises a second shredder knife, and the second shredder knife is arranged at an end of the shredder arm away from the rotating table.

[0019] In an optional embodiment, each loosening mechanism further includes a connecting chain, one end of which is connected to the rotating table, and the other end of which is connected to an end of the crushing arm away from the rotating table.

[0020] In an optional embodiment, the number of the loosening mechanisms is 2, and the two loosening mechanisms are arranged on opposite sides of the rotating table.

[0021] In an optional embodiment, each group of unloading rollers includes a plurality of unloading loosening rollers arranged in parallel at the same height in the bin body, each unloading loosening roller includes a roller body and a plurality of unloading cone groups arranged on the roller body, the plurality of unloading cone groups are evenly distributed along the circumference of the roller body, each group of unloading cone groups includes a plurality of unloading cones, and the plurality of unloading cones are evenly arranged along the length direction of the roller body.

[0022] In an optional embodiment, the gap between adjacent rollers is 200-250 mm, the diameter of the roller is 400-500 mm, and the height of the discharge cone protruding from the roller is 50-80 mm.

[0023] In an optional embodiment, the number of the unloading roller groups is 2, and the two unloading roller groups are spaced apart in the height direction of the bin body.

[0024] In an optional embodiment, at least one of the following technical features (1) and (2) is also included:

[0025] (1) The feed bin further includes an auger discharging device, which is connected to the discharging port;

[0026] (2) The materials of the unloading roller group and the arch breaking device are both wear-resistant alloy.

[0027] In an optional embodiment, a feed bin is used in feeding coal gasification fine slag.

[0028] The present invention has the following beneficial effects:

[0029] The feed bin provided by the present invention can avoid the accumulation of materials in the feed bin due to the arrangement of the unloading roller group and the arch breaking device, so that the materials entering the feed bin can become looser and thus be better transported to the next unit. The feed bin is very suitable for use in continuous production processes, and can realize continuous transportation of materials to the next unit, and the problem of material jamming is not easy to occur during the transportation process. In the present invention, especially the arrangement of the arch breaking device, not only can the loose materials be further realized, but also, since the crushing arm has a certain toughness, it can also avoid the crushing arm being overloaded and damaged or broken when the bottom material accumulates. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the structure of a feed bin provided in an embodiment of the present invention;

[0032] Figure 2 For cutting Figure 1 A schematic diagram of the internal structure of the warehouse can be seen behind the warehouse;

[0033] Figure 3 It is a schematic diagram when looking down at the bottom of the warehouse;

[0034] Figure 4 It is a schematic diagram of the structure of the unloading loosening roller.

[0035] 100-feeding bin; 110-bin body; 111-feeding port; 112-discharging port; 120-discharging roller group; 121-discharging loosening roller; 122-roller body; 123-discharging cone; 124-first motor; 130-arch breaking device; 131-rotating table; 132-second motor; 133-guide plate; 140-loosening mechanism; 141-crushing arm; 142-arc plate; 143-hoop; 145-first crushing knife; 146-second crushing knife; 150-connecting chain; 160-auger discharging device; 161-discharging channel; 162-auger motor. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figure 1 As shown, an embodiment of the present invention provides a feed bin 100 , including a bin body 110 , at least one set of unloading rollers 120 and an arch breaking device 130 .

[0043] like Figure 1 and Figure 2 As shown, a feed port 111 is disposed at the top of the bin body 110 , and a discharge port 112 is disposed at the bottom of the bin body 110 .

[0044] At least one set of unloading rollers 120 is disposed in the silo body 110 to loosen the slag entering the silo body 110 from the feed port 111 .

[0045] Furthermore, if Figure 4As shown, each group of unloading rollers 120 includes a plurality of unloading loosening rollers 121 arranged in parallel at the same height in the bin body 110, each unloading loosening roller 121 includes a roller body 122 and a plurality of unloading cones 123 arranged on the roller body 122, the plurality of unloading cones 123 are evenly distributed along the circumference of the roller body 122, each group of unloading cones 123 includes a plurality of unloading cones 123, and the plurality of unloading cones 123 are evenly arranged along the length direction of the roller body 122. The end of the roller body 122 is connected to the output shaft of the first motor 124, and the first motor 124 is started to drive the roller body 122 to rotate.

[0046] During operation, the material loosening roller 121 rotates, and the material entering the feed bin 100 from the feed port 111 falls onto the roller body 122. The roller body 122 bears the weight of the material, which can prevent the upper material from pressing down on the lower material, causing the lower material to be compacted and difficult to discharge. The material loosening cone 123 on the roller body 122 can crush the material when the roller body 122 rotates, making the material falling below looser.

[0047] Optionally, in order to facilitate material feeding, the rotation direction of the roller bodies 122 can be set so that the rotation directions of two adjacent roller bodies 122 rotate in opposite directions.

[0048] Optionally, there are two feeding roller groups 120, and the two feeding roller groups 120 are arranged at intervals in the height direction of the bin body 110. Setting two feeding roller groups 120 can better prevent the upper material from compacting the lower material. It should be noted that the number of feeding roller groups 120 can also be 3 or more according to process requirements.

[0049] Furthermore, in order to better ensure the looseness of the material and smooth material discharge, the gap between adjacent rollers 122 is 200mm~250mm (for example, 200mm, 230mm or 250mm), the diameter of the roller 122 is 400~500mm (for example, 400mm, 450mm or 500mm), and the height of the discharge cone 123 protruding from the roller 122 is 50mm~80mm (for example, 50mm, 60mm, 70mm or 80mm).

[0050] like Figure 2 and Figure 3 As shown, the arch breaking device 130 is arranged at the bottom of the silo body 110, including a rotating table 131 and at least two loosening mechanisms 140, at least two loosening mechanisms 140 are arranged in sequence along the height direction of the rotating table 131, each loosening mechanism 140 includes an arc-shaped crushing arm 141 and a plurality of first crushing knives 145, one end of the crushing arm 141 is fixedly connected to the peripheral wall of the rotating table 131, and the other end extends to the side wall close to the silo body 110, the inner side of the arc of the crushing arm 141 faces the rotating table 131, and the plurality of first crushing knives 145 are arranged at intervals along the outer side of the arc of the crushing arm 141. The bottom of the rotating table 131 is connected to the second motor 132.

[0051] Under normal circumstances, when the feed bin 100 is working, the rotating table 131 rotates under the drive of the second motor 132, thereby pulling the crushing arm 141 to move. The rotating direction of the rotating table 131 is such that the outer side of the arc of the crushing arm 141 is the front face of the material, that is, when the crushing arm 141 moves, the outer side of the arc contacts the falling material head-on, such as Figure 3 As shown, the rotating table 131 usually rotates counterclockwise. It should be noted that the rotating table 131 does not necessarily rotate in one direction all the time. In some special cases, such as when materials are located at the bottom edge for a long time and cannot be discharged, the rotating table 131 can also be reversed, and then the crushing arm 141 can be reversed to discharge the materials that cannot be discharged for a long time.

[0052] The first crushing knife 145 crushes the material again to ensure that the material is loose, and finally discharged from the discharge port 112.

[0053] Furthermore, the loosening mechanism 140 further includes a second crushing knife 146 , which is disposed at the end of the crushing arm 141 away from the rotating platform 131 .

[0054] The second crushing knife 146 is mainly used to crush the material near the side wall of the silo 110 to further avoid compaction of the material and make the material looser.

[0055] Furthermore, the crushing arm 141 includes a plurality of stacked arc plates 142 and a plurality of hoops 143 , and the plurality of arc plates 142 are fixed as a whole by the plurality of hoops 143 to form the crushing arm 141 .

[0056] The plate body usually has good toughness (elasticity). Since the crushing arm 141 is composed of multiple arc-shaped plates 142 stacked together, it can undergo a certain recoverable deformation in its rotation direction. When too much material accumulates at the bottom and the pressure on the loosening mechanism 140 is too great, the crushing arm 141 can be deformed close to the rotating table 131 to prevent the crushing arm 141 from being damaged due to excessive torque.

[0057] Furthermore, the arch breaking device 130 further includes a plurality of guide plates 133, which are fixedly arranged on the upper surface of the rotating table 131 in a circular array, and each guide plate 133 is arc-shaped. When working, the arc outer side surface of each guide plate 133 is the front surface of the slag, that is, when the material falls to the guide plate 133, it contacts the arc outer side surface of the guide plate 133. The arrangement of the guide plate 133 can make the material reaching the rotating table 131 rotate and discharge.

[0058] Furthermore, each loosening mechanism 140 further includes a connecting chain 150 , one end of which is connected to the rotating table 131 , and the other end of which is connected to an end of the crushing arm 141 away from the rotating table 131 .

[0059] Since the crushing arm 141 has a certain toughness, its end is connected to the rotating table 131 to prevent the second crushing knife 146 from scraping the side wall of the bin body 110.

[0060] Optionally, the material of the unloading roller set 120 and the arch breaking device 130 are both wear-resistant alloy materials to effectively prevent the devices from wearing out and failing.

[0061] Furthermore, the feed bin 100 further includes an auger discharging device 160, which is connected to the discharge port 112. The auger discharging device 160 includes a discharge channel 161, a spiral feeding mechanism and an auger motor 162. The discharge channel 161 is connected to the discharge port 112. The auger motor 162 is arranged outside the discharge channel 161 and connected to the spiral feeding mechanism. The material discharged from the discharge port 112 of the feed bin 100 is transported to the next unit under the action of the auger discharging device 160. It should be noted that the auger discharging device 160 belongs to the prior art and will not be described in detail here.

[0062] The feed bin 100 provided by the present invention can avoid the accumulation of materials in the feed bin 100 due to the arrangement of the unloading roller group 120 and the arch breaking device 130, so that the materials entering the feed bin 100 can become looser and thus be better transported to the next unit. The feed bin 100 is very suitable for use in a continuous production process, and can realize continuous transportation of materials to the next unit, and the problem of material jamming is not prone to occur during the transportation process. In the present invention, especially the arrangement of the arch breaking device 130, not only can the loosening of materials be further realized, but also, since the crushing arm 141 has a certain toughness, it can also avoid the crushing arm 141 from being overloaded and damaged or broken when the bottom material accumulates.

[0063] The feeding bin 100 provided in the embodiment of the present invention is suitable for feeding coal gasification fine slag because it can realize continuous feeding and make the material looser during the feeding process.

[0064] In summary, the feed bin 100 of the present invention has the following characteristics: 1. Using the feed bin 100 to feed materials can achieve the goal of no bridging, wall hanging and other problems of materials in the bin, and can continuously, stably and sufficiently supply materials to subsequent systems. This method has the characteristics of simple structure, easy operation and smooth operation.

[0065] 2. Due to the setting of the unloading roller group 120, the roller body 122 can withstand the pressure of the material in the vertical direction, avoid the upper material squeezing the lower material, and avoid the bottom material from being compacted and blocked due to the vertical pressure generated by the material's own weight.

[0066] 3. The arch breaking device 130 provided at the bottom of the silo body 110 can force the material to flow toward the silo outlet.

[0067] 4. Since the crushing arm 141 is composed of an arc-shaped plate 142, it has better toughness and can deform when subjected to greater pressure to avoid damage caused by excessive torque.

[0068] Most of the existing silos on the market use hollow steel structures without any components inside. This design, if used for materials that are not easy to flow, will lead to compaction, bridging, wall hanging and even hardening. The loosening device and the bottom loosening arch breaking device 130 used in the present invention can solve the above problems.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding bin, characterized in that: It includes a bin body, at least one set of unloading rollers and an arch breaking device; The top of the silo is provided with a feed inlet, and the bottom of the silo is provided with a discharge outlet; The at least one group of unloading rollers is arranged in the silo body, and is used to loosen the slag entering the silo body from the feed inlet; The arch breaking device is arranged at the bottom of the silo body, and includes a rotating table and at least two loosening mechanisms, the at least two loosening mechanisms are arranged in sequence along the height direction of the rotating table, each of the loosening mechanisms includes an arc-shaped crushing arm and a plurality of first crushing knives, one end of the crushing arm is fixedly connected to the peripheral wall of the rotating table, and the other end extends to the side wall close to the silo body, the inner side of the arc of the crushing arm faces the rotating table, and the plurality of first crushing knives are arranged at intervals along the outer side of the arc of the crushing arm; The crushing arm comprises a plurality of hoops and a plurality of stacked arc plates, and the plurality of arc plates are fixed as a whole by the plurality of hoops to form the crushing arm.

2. The feed bin according to claim 1, characterized in that: The arch breaking device also includes a plurality of material guide plates, which are fixedly arranged on the upper surface of the rotating table in a circular array. Each of the material guide plates is arc-shaped. When working, the arc outer side surface of each material guide plate is the front surface of the slag, and the arc outer side surface of each material crushing arm is the front surface of the slag.

3. The feed bin according to claim 1, characterized in that: Each of the loosening mechanisms further includes a second crushing knife, which is arranged at an end of the crushing arm away from the rotating table.

4. The feed bin according to claim 1, characterized in that: Each of the loosening mechanisms further comprises a connecting chain, one end of which is connected to the rotating platform, and the other end of which is connected to an end of the crushing arm away from the rotating platform.

5. The feed bin according to claim 1, characterized in that: The number of the loosening mechanisms is 2, and the two loosening mechanisms are arranged on opposite sides of the rotating table.

6. The feed bin according to claim 1, characterized in that: Each group of the unloading roller groups includes a plurality of unloading loosening rollers arranged in parallel at the same height in the bin body, each of the unloading loosening rollers includes a roller body and a plurality of unloading cone groups arranged on the roller body, the plurality of unloading cone groups are evenly distributed along the circumference of the roller body, each group of the unloading cone groups includes a plurality of unloading cones, and the plurality of unloading cones are evenly arranged along the length direction of the roller body.

7. The feed bin according to claim 6, characterized in that: The gap between adjacent roller bodies is 200-250 mm, the diameter of the roller body is 400-500 mm, and the height of the feed cone protruding from the roller body is 50-80 mm.

8. The feed bin according to claim 5, characterized in that: The number of the unloading roller groups is 2, and the two groups of unloading roller groups are spaced apart in the height direction of the bin body.

9. The feed bin according to claim 1, characterized in that: Also includes at least one of the following technical features (1) and (2): (1) The feed bin further includes an auger discharging device, and the auger discharging device is connected to the discharging port; (2) The materials of the unloading roller group and the arch breaking device are both wear-resistant alloy materials.

10. Use of the feed bin according to any one of claims 1 to 9 in feeding coal gasification fine slag.

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