Coal lock hopper of coal gasifier
The coal lock hopper uses a rotating shaft with bevel gears and scraping assemblies to efficiently remove ash from the inner wall, addressing the adhesion issue and ensuring stable operation and efficient ash discharge in coal gasifiers.
Patent Information
- Application Number
- CN202420813489.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-19
AI Technical Summary
Ash collected inside the coal lock hopper easily adheres to the inner wall, reducing its capacity and efficiency over time, necessitating frequent cleaning and affecting the stability of the coal gasifier operation.
A coal lock hopper design featuring a rotating shaft with bevel gears, crushing mechanisms, and scraping assemblies that utilize centrifugal force to dislodge and remove ash from the inner wall, combined with a spherical hollow box and triangular brackets to enhance cleaning efficiency.
The design effectively crushes and discharges ash, improving cleaning efficiency, reducing capacity loss, and ensuring stable operation of the coal gasifier by minimizing ash accumulation and enhancing the smoothness of the lock hopper's feeding and unloading process, thus maintaining efficient use of the coal lock hopper.
Smart Images
Figure CN222160080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal gasifiers, in particular to a coal locking bucket for a coal gasifier. Background Art
[0002] Coal gasification technology can be classified according to the dynamic process of coal in the furnace, mainly including moving bed gasification, fluidized bed gasification, fluidized bed gasification and molten bed gasification, etc. In fluidized bed gasification technology, the pulverized coal pressurized conveying process is the first stage of dry pulverized coal pressurized gasification technology. The main equipment of the pulverized coal pressurized conveying process includes low-pressure pulverized coal bin, pulverized coal lock hopper and pulverized coal feeding tank. The coal lock hopper is mainly used to collect and discharge solid slag, and complete the slag collection and discharge process according to the set sequence. When the set slag collection time is reached, the lock hopper is isolated from the gasifier and the slag is discharged from the lock hopper;
[0003] After searching, the Chinese utility model patent with publication number CN208869553U is named as a new type of coal powder lock bucket. The bottom of the lock bucket is a cone, and flute tubes are evenly arranged on the inner wall of the cone. A wing valve is arranged at the bottom of the flute tube. The wing valve includes a reduced diameter tube and a valve plate. The plane where the outlet of the reduced diameter tube is located is parallel to the central axis of the cone. The valve plate is narrow at the top and thick at the bottom. The surface of the valve plate adjacent to the outlet of the reduced diameter tube is a sealing surface, and the surface of the valve plate away from the outlet of the reduced diameter tube is a counterweight surface. In order to avoid blockage and damage of the coal powder lock bucket, a wing valve is added at the bottom of the flute tube, which solves the problem of blockage of the flute tube blowing port and damage of the flute tube caused by coal powder entering the flute tube, greatly improves the service life of the flute tube, and stabilizes the operation of the system.
[0004] However, it was found during use that the ash collected inside the lock bucket is easy to adhere to the inner wall of the lock bucket during long-term use. As the use time increases, the attached ash gradually increases, which not only affects the capacity of the lock bucket, but may also cause the working efficiency of the lock bucket to decrease, and it needs to be cleaned in time. The new coal powder lock bucket only cleans the flute tube, but there are still deficiencies in the cleaning of the inside of the lock bucket, which has a certain impact on the use efficiency and stability of the coal lock bucket of the gasifier, and is not conducive to the use of the coal lock bucket of the gasifier. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a coal lock bucket for a coal gasifier, which solves the problem that the ash collected inside the lock bucket is easily attached to the inner wall of the lock bucket when used for a long time. As the use time increases, the attached ash gradually increases, which not only affects the capacity of the lock bucket, but may also cause the working efficiency of the lock bucket to decrease, and it needs to be cleaned in time. The new coal powder lock bucket only cleans the flute tube, but there are still deficiencies in the cleaning of the inside of the lock bucket, which has a certain impact on the use efficiency and stability of the coal lock bucket of the gasifier, and is not conducive to the technical problem of the use of the coal lock bucket of the gasifier.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a coal lock bucket for a coal gasifier, comprising a coal gasifier body, the lower end of the coal gasifier body is connected to a lock bucket body, a rotating shaft is arranged inside the lock bucket body, two triangular brackets are sleeved on the rotating shaft, the outer wall of the triangular bracket is fixedly connected to the inner wall of the lock bucket body, a spherical hollow box is fixedly connected to the middle of the top surface of the triangular bracket at the upper end, the upper end of the rotating shaft penetrates the outer wall of the spherical hollow box and extends to the inside, and the rotating shaft located inside the spherical hollow box is sleeved on the rotating shaft A first bevel gear is connected, the right end of the first bevel gear is meshed with a second bevel gear, a rotating rod is fixedly connected to the middle of the second bevel gear, the rotating rod passes through the inner wall of the spherical hollow box and extends to the outside, the right end of the rotating rod passes through the lock bucket body and extends to the outside, a servo motor is installed on the outer wall of the lock bucket body through a mounting seat, the output shaft of the servo motor is coaxially connected to the rotating rod, a plurality of crushing mechanisms are fixedly connected to the rotating shaft, a scraping assembly is slidably connected to the bottom surface of the lock bucket body, and the lock bucket body is a coal lock bucket of a coal gasifier.
[0007] Preferably, the crushing mechanism comprises a mounting block, the mounting block is fixedly connected to the outer peripheral wall of the rotating shaft, the mounting blocks at the left and right ends are of central symmetrical structure, a mounting groove is provided on the mounting block, and a rotating block is provided inside the mounting groove.
[0008] Preferably, a rotating pin is fixedly connected to the middle of the rotating block, and both upper and lower ends of the rotating pin are rotatably connected to the mounting block, and a plurality of triangular blocks are provided at the outer end of the rotating pin.
[0009] Through the above technical solution, the connection and use of multiple triangular blocks are facilitated, and the rotating block drives the rotating pin to rotate along the mounting block.
[0010] Preferably, two adjacent triangular blocks are rotationally connected via a coupling, the outer end of the rotating block is rotationally connected to one of the triangular blocks via a coupling, and a crushing knife is rotationally connected to the triangular block at the outermost end via a coupling, and the blade of the crushing knife is inclined.
[0011] Through the above technical solution, the crushing knife gradually unfolds under the action of centrifugal force, so that the rotating block drives the rotating pin to rotate along the mounting block, and the crushing knife approaches the inner wall of the lock bucket body to crush the ash accumulated inside the lock bucket body.
[0012] Preferably, the scraping assembly includes a connecting block, on which two arc-shaped scrapers are symmetrically fixedly connected, and on which inclined scrapers are fixedly connected, and the bottom surfaces of the arc-shaped scrapers and the inclined scrapers slide with the inner bottom surface of the locking bucket body.
[0013] Preferably, a connecting rod is fixedly connected to the top surface of the connecting block, a slot is provided on the bottom surface of the rotating shaft, the upper end of the connecting rod is plugged into the slot, and the upper end of the connecting rod is slidably connected to the lower end of the rotating shaft through the slot.
[0014] Through the above technical solution, as the rotating shaft rotates, the connecting rod is driven to rotate synchronously through the slot, so that the connecting rod drives the connecting block to move synchronously, and at this time, the arc scraper and the inclined scraper rotate synchronously.
[0015] Preferably, a spring is provided inside the slot, the upper end of the spring is connected and fixed to the rotating shaft, and the lower end of the spring is connected and fixed to the top surface of the connecting rod.
[0016] The above technical solution facilitates the cleaning of ash residue inside the lock bucket body 2 of different heights and thicknesses, thereby improving the applicability and cleaning range of the cleaning.
[0017] Beneficial effects of the utility model:
[0018] 1. The output shaft of the servo motor drives the rotating rod to rotate along the spherical hollow box and the lock bucket body, so that the second bevel gear rotates and meshes with the first bevel gear to rotate synchronously. At this time, the second bevel gear drives the rotating shaft to rotate along the triangular block, so that the rotating shaft drives the crushing mechanism to rotate. The initial state of the crushing mechanism is curved, and the outer walls of the two adjacent rotating blocks are in friction contact. The back of the crushing knife is in friction contact with the outer wall of the rotating shaft. With the rotation of the rotating shaft, the crushing knife gradually unfolds under the action of centrifugal force, so that the rotating block drives the rotating pin to rotate along the mounting block, and the crushing knife approaches the inner wall of the lock bucket body to crush the ash accumulated inside the lock bucket body, and crush the ash inside the lock bucket body from the middle to the edge gradually, thereby improving the crushing effect of the ash, facilitating the crushing and discharge of the attached ash, improving the cleaning efficiency, reducing the influence of the ash on the capacity and life of the lock bucket body, and improving the use efficiency and stability of the coal lock bucket of the coal gasifier.
[0019] 2. The use of a triangular bracket and a spherical hollow box reduces the impact on the feeding speed and efficiency of the lock bucket body, making the lock bucket body smoother in collecting and discharging ash and slag, thus ensuring the normal operation and efficient use of the coal lock bucket of the coal gasifier.
[0020] 3. As the shaft rotates, the connecting rod is driven to rotate synchronously through the slot, so that the connecting rod drives the connecting block to move synchronously. At this time, the arc scraper and the inclined scraper rotate synchronously, and the bottom surfaces of the arc scraper and the inclined scraper slide with the bottom surface of the lock bucket body to scrape off the ash and slag on the bottom surface of the lock bucket body, thereby improving the cleaning efficiency and ensuring the thoroughness of the cleaning.
[0021] 4. The spring pushes the connecting rod to slide along the slot, driving the arc scraper and the inclined scraper to move synchronously, making it convenient to clean the ash inside the lock bucket body of different heights and thicknesses, and improving the applicability and cleaning range of the cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a cross-sectional view of the lock bucket body structure of the utility model;
[0024] Figure 3 This is a cross-sectional view of the spherical hollow box structure of the utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the crushing mechanism of the utility model;
[0026] Figure 5 This is a schematic diagram of the structure of the crushing knife of the utility model;
[0027] Figure 6 This is a schematic diagram of the arc scraper structure of the utility model.
[0028] In the figure: 1. coal gasifier body; 2. lock bucket body; 3. rotating shaft; 4. triangular bracket; 5. spherical hollow box; 6. first bevel gear; 7. second bevel gear; 8. rotating rod; 9. servo motor; 10. crushing mechanism; 1001. mounting block; 1002. mounting groove; 1003. rotating block; 1004. rotating pin; 1005. triangular block; 1006. connecting shaft; 1007. crushing knife; 11. scraping assembly; 1101. connecting block; 1102. arc scraper; 1103. inclined scraper; 1104. connecting rod; 1105. slot; 1106. spring. DETAILED DESCRIPTION
[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0030] Embodiment 1
[0031] like Figure 1 to Figure 5As shown, this embodiment provides a coal lock bucket for a coal gasifier, including a coal gasifier body 1, a lock bucket body 2 is connected to the lower end of the coal gasifier body 1, a rotating shaft 3 is arranged inside the lock bucket body 2, two triangular brackets 4 are sleeved on the rotating shaft 3, the outer wall of the triangular bracket 4 is fixedly connected to the inner wall of the lock bucket body 2, a spherical hollow box 5 is fixedly connected to the middle of the top surface of the triangular bracket 4 at the upper end, the upper end of the rotating shaft 3 passes through the outer wall of the spherical hollow box 5 and extends to the inside, and a first bevel gear is sleeved on the rotating shaft 3 located inside the spherical hollow box 5 6. The right end of the first bevel gear 6 is meshedly connected with the second bevel gear 7, and the middle part of the second bevel gear 7 is fixedly connected with a rotating rod 8, which passes through the inner wall of the spherical hollow box 5 and extends to the outside. The right end of the rotating rod 8 passes through the lock bucket body 2 and extends to the outside. A servo motor 9 is installed on the outer wall of the lock bucket body 2 through a mounting seat. The output shaft of the servo motor 9 is coaxially connected with the rotating rod 8. A plurality of crushing mechanisms 10 are fixedly connected to the rotating shaft 3. A scraping assembly 11 is slidably connected to the bottom surface of the lock bucket body 2. The lock bucket body 2 is a coal lock bucket of a coal gasifier.
[0032] The crushing mechanism 10 includes a mounting block 1001, which is fixedly connected to the outer peripheral wall of the rotating shaft 3. The mounting blocks 1001 at the left and right ends are of a centrally symmetrical structure. A mounting groove 1002 is provided on the mounting block 1001, and a rotating block 1003 is provided inside the mounting groove 1002. A rotating pin 1004 is fixedly connected to the middle of the rotating block 1003. Both the upper and lower ends of the rotating pin 1004 are rotatably connected to the mounting block 1001. A plurality of triangular blocks 1005 are provided at the outer end of the rotating pin 1004; this facilitates the connection and use of a plurality of triangular blocks 1005, and the rotating block 1003 drives the rotating pin 1004 to rotate along the mounting block 1001.
[0033] Two adjacent triangular blocks 1005 are rotationally connected via a connecting shaft 1006, and the outer end of the rotating block 1003 is rotationally connected to one of the triangular blocks 1005 via the connecting shaft 1006. A crushing knife 1007 is rotationally connected to the triangular block 1005 at the outermost end via the connecting shaft 1006, and the blade of the crushing knife 1007 is inclined; the crushing knife 1007 gradually unfolds under the action of centrifugal force, so that the rotating block 1003 drives the rotating pin 1004 to rotate along the mounting block 1001, and the crushing knife 1007 approaches the inner wall of the locking bucket body 2 to crush the ash accumulated inside the locking bucket body 2.
[0034] When cleaning the lock bucket body 2, the output shaft of the servo motor 9 drives the rotating rod 8 to rotate along the spherical hollow box 5 and the lock bucket body 2, so that the second bevel gear 7 rotates and meshes with the first bevel gear 6 to rotate synchronously. At this time, the second bevel gear 7 drives the rotating shaft 3 to rotate along the triangular block 1005, so that the rotating shaft 3 drives the crushing mechanism 10 to rotate. The initial state of the crushing mechanism 10 is curved, and the outer walls of the two adjacent rotating blocks 1003 are in friction contact. The back of the crushing knife 1007 is in friction contact with the outer wall of the rotating shaft 3. As the rotating shaft 3 rotates, the crushing knife 1007 is gradually unfolded under the action of centrifugal force, so that the rotating block 1003 drives the rotating pin 1004 to rotate along the mounting block 1001, and the crushing knife 1007 approaches the inner wall of the lock bucket body 2 to crush the ash accumulated inside the lock bucket body 2, and gradually crushes the ash inside the lock bucket body 2 from the middle to the edge, thereby improving the crushing effect of the ash, facilitating the crushing and discharge of the attached ash, improving the cleaning efficiency, reducing the influence of the ash on the capacity and life of the lock bucket body 2, and improving the use efficiency and stability of the coal lock bucket of the coal gasifier;
[0035] By using the triangular bracket 4 and the spherical hollow box 5, the impact on the feeding speed and efficiency of the lock bucket body 2 is reduced, making the lock bucket body 2 smoother in collecting and discharging ash and slag, thereby ensuring the normal operation and efficient use of the coal lock bucket of the coal gasifier.
[0036] Embodiment 2
[0037] like Figure 1 , Figure 2 and Figure 6 As shown, on the basis of Example 1, the scraping assembly 11 includes a connecting block 1101, on which two arc-shaped scrapers 1102 are symmetrically fixedly connected, and on which the arc-shaped scrapers 1102 are fixedly connected an inclined scraper 1103, the bottom surfaces of the arc-shaped scrapers 1102 and the inclined scrapers 1103 slide with the inner bottom surface of the lock bucket body 2, and a connecting rod 1104 is fixedly connected to the top surface of the connecting block 1101, and a slot 1105 is provided on the bottom surface of the rotating shaft 3, and the upper end of the connecting rod 1104 is plugged into the slot 1105, and the upper end of the connecting rod 1104 is slidably connected to the lower end of the rotating shaft 3 through the slot 1105; as the rotating shaft 3 rotates, the connecting rod 1104 is driven to rotate synchronously through the slot 1105, so that the connecting rod 1104 drives the connecting block 1101 to move synchronously, and at this time, the arc-shaped scraper 1102 and the inclined scraper 1103 rotate synchronously.
[0038] A spring 1106 is provided inside the slot 1105, the upper end of the spring 1106 is connected and fixed to the rotating shaft 3, and the lower end of the spring 1106 is connected and fixed to the top surface of the connecting rod 1104; this facilitates the cleaning of ash inside the lock bucket body 2 of different heights and thicknesses, and improves the applicability and cleaning range of the cleaning.
[0039] When cleaning the inner bottom surface of the lock bucket body 2, as the rotating shaft 3 rotates, the connecting rod 1104 is driven to rotate synchronously through the slot 1105, so that the connecting rod 1104 drives the connecting block 1101 to move synchronously, and at this time, the arc scraper 1102 and the inclined scraper 1103 rotate synchronously, and the bottom surfaces of the arc scraper 1102 and the inclined scraper 1103 slide with the inner bottom surface of the lock bucket body 2, so as to scrape off the ash and slag on the inner bottom surface of the lock bucket body 2, thereby improving the cleaning efficiency and ensuring the thoroughness of the cleaning;
[0040] The spring 1106 pushes the connecting rod 1104 to slide along the slot 1105, driving the arc scraper 1102 and the inclined scraper 1103 to move synchronously, making it convenient to clean the ash inside the lock bucket body 2 of different heights and thicknesses, and improving the applicability and cleaning range of the cleaning.
[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A coal lock hopper for a coal gasifier, comprising a coal gasifier body (1), wherein the lower end of the coal gasifier body (1) is connected to a lock hopper body (2), characterized in that: A rotating shaft (3) is provided inside the lock bucket body (2), and two triangular brackets (4) are sleeved on the rotating shaft (3). The outer wall of the triangular bracket (4) is fixedly connected to the inner wall of the lock bucket body (2). A spherical hollow box (5) is fixedly connected to the middle of the top surface of the triangular bracket (4) at the upper end. The upper end of the rotating shaft (3) passes through the outer wall of the spherical hollow box (5) and extends to the inside. A first bevel gear (6) is sleeved on the rotating shaft (3) located inside the spherical hollow box (5). The right end of the first bevel gear (6) is meshingly connected with a second bevel gear (6). gear (7), a rotating rod (8) is fixedly connected to the middle part of the second bevel gear (7), the rotating rod (8) penetrates the inner wall of the spherical hollow box (5) and extends to the outside, the right end of the rotating rod (8) penetrates the lock bucket body (2) and extends to the outside, a servo motor (9) is installed on the outer wall of the lock bucket body (2) through a mounting seat, the output shaft of the servo motor (9) is coaxially connected to the rotating rod (8), a plurality of crushing mechanisms (10) are fixedly connected to the rotating shaft (3), and a scraping assembly (11) is slidably connected to the bottom surface of the lock bucket body (2).
2. The coal lock hopper for a coal gasifier according to claim 1, characterized in that: The crushing mechanism (10) comprises a mounting block (1001), wherein the mounting block (1001) is fixedly connected to the outer peripheral wall of the rotating shaft (3), and the mounting blocks (1001) at the left and right ends are centrally symmetrical structures. The mounting block (1001) is provided with a mounting groove (1002), and a rotating block (1003) is provided inside the mounting groove (1002).
3. The coal lock hopper for a coal gasifier as claimed in claim 2, characterized in that: A rotating pin (1004) is fixedly connected to the middle of the rotating block (1003), and both upper and lower ends of the rotating pin (1004) are rotatably connected to the mounting block (1001), and a plurality of triangular blocks (1005) are provided at the outer end of the rotating pin (1004).
4. The coal lock hopper for a coal gasifier as claimed in claim 3, characterized in that: Two adjacent triangular blocks (1005) are rotatably connected via a connecting shaft (1006); the outer end of the rotating block (1003) is rotatably connected to one of the triangular blocks (1005) via a connecting shaft (1006); a crushing knife (1007) is rotatably connected to the triangular block (1005) at the outermost end via a connecting shaft (1006); and the blade of the crushing knife (1007) is inclined.
5. The coal lock hopper for a coal gasifier according to claim 1, characterized in that: The scraping assembly (11) comprises a connecting block (1101), to which two arc-shaped scrapers (1102) are symmetrically fixedly connected, and to which an inclined scraper (1103) is fixedly connected, and the bottom surfaces of the arc-shaped scraper (1102) and the inclined scraper (1103) slide with the inner bottom surface of the lock bucket body (2).
6. The coal lock hopper for a coal gasifier as claimed in claim 5, characterized in that: The top surface of the connecting block (1101) is fixedly connected with a connecting rod (1104), the bottom surface of the rotating shaft (3) is provided with a slot (1105), the upper end of the connecting rod (1104) is plugged into and matched with the slot (1105), and the upper end of the connecting rod (1104) is slidably connected with the lower end of the rotating shaft (3) via the slot (1105).
7. The coal lock hopper for a coal gasifier as claimed in claim 6, characterized in that: A spring (1106) is provided inside the slot (1105), the upper end of the spring (1106) is connected and fixed to the rotating shaft (3), and the lower end of the spring (1106) is connected and fixed to the top surface of the connecting rod (1104).