Ash bucket anti-blocking dredging device, furnace bottom leaked ash conveyor and incinerator

Abstract

The utility model relates to an anti-blocking and dredging device for an ash hopper, a furnace bottom ash leakage conveyor and an incinerator, and the anti-blocking and dredging device for the ash hopper comprises a first shaft which comprises a first end and a second end; the first shaft is used for being arranged on the ash bucket, and the first end and the second end extend out of the ash bucket; the ash removal tool is arranged on the first shaft and is used for removing ash in the ash hopper; a slide rail; the bearing assembly is connected with the first end and used for bearing the first end; the bearing assembly is arranged on the sliding rail and can slide along the sliding rail in a reciprocating mode. And the tail component is connected with the second end and is used for bearing the second end. The furnace bottom ash leaking conveyor is provided with the ash hopper anti-blocking dredging device, and the incinerator is provided with the furnace bottom ash leaking conveyor. The furnace bottom ash leakage conveyor and the furnace bottom ash hopper can be prevented from hardening and ash blocking, and dredging can be conducted when ash blocking occurs.

Description

Technical Field

[0001] This application relates to the technical field of ash and slag cleaning, and in particular to an ash hopper anti-clogging and unblocking device, a furnace bottom ash conveyor, and an incinerator. Background Technology

[0002] As the municipal solid waste treatment industry plays an increasingly important role in people's lives, the safe, environmentally friendly, and stable operation of waste-to-energy plants has become a focus of public attention. However, in the use of ash and slag systems in incinerators, problems such as ash and slag blockage and caking frequently occur in various ash conveying equipment.

[0003] In particular, the water-sealed scraper-type bottom ash conveyor used in most waste-to-energy plants can effectively ensure the sealing of the furnace, but when ash falls, it picks up water droplets and generates a large amount of water vapor, which easily causes the ash to stick to the inner wall of the ash hopper. Under the action of primary air at a temperature as high as 190°C, the sticky ash and slag quickly harden, so the probability of blockage at the inlet of the bottom ash conveyor is extremely high.

[0004] In addition, some areas have a high content of fine dust or other lightweight, fragmented ash in the garbage. This type of ash will float on the water surface, greatly increasing the probability of ash caking and blockage at the inlet of the ash conveyor and the outlet of the ash hopper at the bottom of the incinerator.

[0005] Such problems are common and frequent in waste-to-energy plants that use water-sealed scraper bottom ash conveyors, and have long plagued boiler maintenance personnel, seriously wasting manpower and resources on the front line of maintenance and threatening the stable operation of the unit. Utility Model Content

[0006] In order to overcome the problems existing in the prior art, this application proposes an ash hopper anti-clogging and unblocking device, a furnace bottom ash conveyor, and an incinerator, which can prevent the furnace bottom ash conveyor and furnace bottom ash hopper from caking and clogging, and can also unblock when ash clogging occurs.

[0007] This application provides a device for preventing and clearing blockages in ash hoppers, comprising:

[0008] A first shaft includes a first end and a second end; the first shaft is used to be mounted on the ash hopper and the first end and the second end extend out of the ash hopper.

[0009] A dust removal tool is mounted on the first shaft and is used for dust removal from the ash hopper.

[0010] Slide rail;

[0011] A bearing assembly, connected to the first end, is used to support the first end; the bearing assembly is disposed on the slide rail and can reciprocate along the slide rail; and

[0012] The tail assembly, connected to the second end, is used to carry the second end.

[0013] Furthermore, the tail assembly includes:

[0014] Enclosure;

[0015] A sliding pivot is disposed inside the housing, and one end of the sliding pivot is connected to the end of the second end;

[0016] A planar thrust bearing is disposed within the housing, one end of the planar thrust bearing being connected to the other end of the sliding shaft; and

[0017] An elastic element, located inside the housing, is connected to the other end of the planar thrust bearing and is used for resetting the planar thrust bearing.

[0018] Furthermore, the tail assembly also includes:

[0019] A top plate, disposed within the housing and connected to the elastic element, is used to abut against the elastic element; and

[0020] A set screw is provided on the cover and is used to abut against the top plate.

[0021] Furthermore, the cover is provided with an oil nozzle, which is used to apply lubricant to the sliding shaft;

[0022] The sliding shaft is equipped with a skeleton oil seal to prevent the lubricant from overflowing.

[0023] Furthermore, it also includes:

[0024] A striking end, located at the end of the first end, is used to strike the first shaft; and

[0025] A rotary crank, mounted on the striking end, is used to drive the first shaft to rotate.

[0026] Furthermore, the cleaning tool is a cleaning tooth, and multiple cleaning teeth are arranged in parallel and staggered arrangement on the first shaft at equal intervals;

[0027] The installation direction of the rotating handle must be parallel to the dust removal teeth.

[0028] Furthermore, the slide rail is provided with a first limiting block and a second limiting block;

[0029] The bearing assembly is located between the first limiting block and the second limiting block.

[0030] In addition, this application also provides a furnace bottom ash conveyor, comprising:

[0031] Ash bucket; and

[0032] The ash hopper anti-clogging and unblocking device described above.

[0033] In addition, this application also provides an incinerator, including: the bottom ash conveyor as described above.

[0034] Compared with the prior art, this application has the following beneficial effects:

[0035] The ash hopper anti-clogging and unblocking device of this application has a simple structure and is easy to install. It is suitable for mass production and installation. It can effectively eliminate the risk of ash caking and clogging at the inlet of the furnace bottom ash conveyor and the outlet of the ash hopper at the bottom of the incinerator. It can also easily and quickly unblock ash caking caused by ash caking, greatly reducing the waste of manpower and material resources. 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 description of the embodiments or the prior art 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] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0038] Figure 1 This is a schematic diagram of the overall structure of an anti-clogging and unblocking device for an ash hopper according to an embodiment of this application;

[0039] Figure 2 This is a left view of the rotating crank in this embodiment of the application when it is vertically downward;

[0040] Figure 3 This is an embodiment of the present application. Figure 2 A magnified view of a portion of the image (BB);

[0041] Figure 4 This is an embodiment of the present application. Figure 1 A magnified view of a portion of the image (AA). Detailed Implementation

[0042] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0043] In the description of this application, it should be understood that the orientations or positional relationships indicated by terms, etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device, element, module, system, platform, or device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The following description of this application is only to be understood as a description of individual embodiments of the technical solutions of this application. Other embodiments are not reflected in the following description, but this does not mean that this application excludes these other embodiments, nor is the technical solution of this application limited to the specific implementations described below, and the protection scope of this application is not limited to the specific implementations described below. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this application.

[0044] It should be noted that if the terms "first," "second," etc., appear in the specification, claims, and accompanying drawings of this application, such descriptions are only used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a system, product, or device that comprises a series of units, modules, or components is not necessarily limited to those explicitly listed, but may include other components not explicitly listed or inherent to such systems, products, or devices.

[0045] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] In some embodiments, such as Figure 1 As shown, this application provides an ash hopper anti-clogging and unblocking device 1, which can be installed on the ash hopper 2. This device can agitate the ash and slag inside the ash hopper 2 to effectively prevent ash and slag caking and clogging at the inlet of the furnace bottom ash conveyor and the outlet of the incinerator bottom ash hopper. It can also conveniently and quickly unblock ash slag when caking occurs. Specifically, the ash hopper anti-clogging and unblocking device 1 may include a first shaft 11, a cleaning tool 12, a slide rail 13, a bearing assembly 14, and a tail assembly 15.

[0047] A first shaft 11, comprising a first end 111 and a second end 112, is mounted on an ash hopper 2, with the first end 111 and the second end 112 extending out of the ash hopper 2. The first end 111 and the second end 112 do not refer to the two ends of the first shaft 11, but rather to a section of the first shaft 11 near the two ends. The first shaft 11 can be a stainless steel shaft.

[0048] Specifically, symmetrical holes can be made at appropriate heights on both sides of the ash hopper 2 at the inlet of the furnace bottom ash conveyor. The height should be chosen so as not to affect the operation of the chain. A first shaft 11 is inserted into the ash hopper 2, and both ends of the first shaft 11, the first end 111 and the second end 112, pass through the holes.

[0049] The dust removal tool 12 is mounted on the first shaft 11 and is used to clean the dust inside the dust hopper 2.

[0050] Specifically, the cleaning tool 12 can be a cleaning tooth, which is welded to the first shaft 11. The first shaft 11 can drive the cleaning tooth to rotate together, thereby breaking up the clump of ash and slag and the floating slag on the water surface, thus achieving the purpose of preventing blockage.

[0051] There can be two slide rails 13, and the slide rails 13 are welded to the head base 16. The head base 16 is horizontally welded to the steel plate on the outer wall of the furnace bottom ash conveyor inlet, and whether to weld a reinforcing rib plate below it can be determined according to the site conditions.

[0052] The bearing assembly 14 is connected to the first end 111 and is used to support the first end 111; and the bearing assembly 14 is mounted on the slide rail 13 and can slide back and forth along the slide rail 13.

[0053] Specifically, such as Figure 1-2 As shown, the bearing assembly 14 includes a bearing housing 141 and a bearing 142. The bottom of the bearing housing 141 is mounted on the slide rail 13, as... Figure 3 As shown, a sliding block 143 is provided at the bottom of the bearing housing 141, and the sliding block 143 is disposed on the slide rail 13. In some embodiments, the sliding block 143 is welded to the bearing housing 141, with one at each end of the bearing housing 141, and two slide rails 13 corresponding to the sliding block 143 are welded to the head base 16.

[0054] The tail assembly 15 is connected to the second end 112 and is used to carry the second end 112.

[0055] In some embodiments, such as Figure 4 As shown, the tail assembly 15 may include a housing 151, a sliding shaft 152, a planar thrust bearing 153, and an elastic element 154.

[0056] The cover 151 provides a space for installing the sliding shaft 152, the planar thrust bearing 153 and the elastic element 154. The cover 151 can be directly fixed to the side wall of the ash hopper 2.

[0057] Specifically, symmetrical holes are made at appropriate heights (preferably without affecting the chain operation) on both sides of the ash hopper at the bottom of the furnace. The welded first shaft 11 is then passed through the holes inside the ash hopper. A stuffing box is installed between the cover 151 and the ash hopper and sealed and welded to the outer wall of the ash hopper. After the stuffing box is filled with graphite packing, the packing gland 159 is connected to the stuffing box with bolts.

[0058] The sliding shaft 152 is disposed inside the cover 151, and one end of the sliding shaft 152 is connected to the end of the second end 112.

[0059] Specifically, the sliding shaft 152 is made of 45# round steel, with a length of 45-55mm. The diameter of the sliding shaft 152 must be 8-11mm larger than the outer diameter of the first shaft 11 and 1-3mm smaller than the outer diameter of the cover 151. The surface of the sliding shaft 152 can be chrome-plated with a chrome plating thickness of 0.02-0.03mm.

[0060] A planar thrust bearing 153 is disposed inside a housing 151, and one end of the planar thrust bearing 153 is connected to the other end of a sliding shaft 152.

[0061] The elastic element 154 can be a spring, a sheet, or other part that can have elastic force. The elastic element 154 is located inside the cover 151 and is connected to the other end of the planar thrust bearing 153. The elastic element 154 is used to reset the planar thrust bearing 153.

[0062] Specifically, the second end 112 of the first shaft 11 is connected by a sliding shaft 152 and can rotate axially through a planar thrust bearing 153. In addition, it can reciprocate axially through an elastic element 154.

[0063] In some embodiments, the tail assembly 15 further includes a top plate 155 and a set screw 156.

[0064] The top plate 155 is disposed inside the cover 151 and is connected to the elastic element 154. The top plate 155 is used to abut against the elastic element 154.

[0065] The set screw 156 is provided on the cover 151 and is used to press against the top plate 155.

[0066] Specifically, the inner diameter of the cover 151 in the tail assembly 15 is larger than that of the first shaft 11. The rear end of the cover 151 is sealed, and a hole is opened at the center of the rear end of the cover 151 to install the set screw 156.

[0067] In some embodiments, a grease nipple 157 is provided on the housing 151, which is used to apply lubricant to the sliding shaft 152.

[0068] A skeleton oil seal 158 is provided on the sliding shaft 152 to prevent lubricant from overflowing.

[0069] Specifically, a hole is drilled and tapped at the middle of the rear of the cover 151, and a grease nipple 157 is installed to enhance the lubrication of the internal components. A groove is cut 5mm from the front end of the sliding rotor 152 to install a skeleton oil seal 158 to ensure that the lubricating grease does not overflow.

[0070] In some embodiments, such as Figure 1 As shown, it also includes a striking end 17, which is disposed at the end of the first end 111 and is used to strike the first shaft 11.

[0071] A rotary handle 18 is mounted on the striking end 17 and is used to drive the first shaft 11 to rotate.

[0072] Specifically, the striking end 17 can be 60mm long and is welded to the end 111 of the first shaft 11. The rotary handle 18 is installed at the connection between the first shaft 11 and the striking end 17 via a keyway and slot fit. Specifically, a keyway can be made on the near-shaft side of the striking end 17, and the keyway position can be on the same side as the cleaning tool 12. The rotary handle 18 is fixed to the head of the first shaft 11 by the keyway and slot fit.

[0073] When the rotary handle 18 is turned, the dust removal tool 12 can be rotated together, which can break up the clumps of ash and scum on the water surface and achieve the purpose of preventing blockage. The bearing seat 141, bearing 142, flat thrust bearing 153 and sliding block 143 can support the first shaft 11 and reduce the friction coefficient during its rotation. When in use, grease can be added through the grease nipple to make the rotation smoother.

[0074] If ash blockage occurs at the inlet of the ash conveyor at the bottom of the furnace and the outlet of the ash hopper at the bottom of the incinerator, the rotating handle 18 can be removed, and the end 17 can be continuously struck with a hammer. Since the bearing seat 141 is mounted on the slide rail 13, the external force will cause the first shaft 11 to move forward. The tail assembly has an elastic element 154 and a sliding shaft 152. After being compressed to a certain position, the elastic element 154 will rebound the first shaft 11. Continuous striking will cause the first shaft 11 to drive the ash cleaning tool 12 to reciprocate within the ash hopper. During this process, the position of the ash cleaning tool 12 can be adjusted by rotating the handle 18, thereby clearing the blockage from all directions and angles.

[0075] In some embodiments, the cleaning tool 12 is a cleaning tooth, and multiple cleaning teeth are arranged parallel to each other at equal intervals on the first shaft 11. The rotating handle 18 is installed in a direction parallel to the cleaning teeth so as to determine the position of the cleaning teeth in the ash hopper.

[0076] In some embodiments, the slide rail 13 is provided with a first limiting block 19 and a second limiting block 20; the bearing assembly 14 is located between the first limiting block 19 and the second limiting block 20.

[0077] Specifically, a first limiting block 19 and a second limiting block 20 are installed on slide rail 13, and a first limiting block 19 and a second limiting block 20 are also installed on another slide rail 13. There are a total of four limiting blocks, which are fixed at the front and rear positions of the bearing seats on the two guide rails respectively.

[0078] In some embodiments, this application also provides a method for preventing and clearing ash hopper blockages, which employs the above-mentioned ash hopper anti-blockage and clearing device, and may specifically include:

[0079] The rotating handle 18 rotates vertically downward due to gravity, and the cleaning teeth in the ash hopper 2 are in a vertical direction.

[0080] Rotating the rotary handle 18 will cause the first shaft 11 to rotate;

[0081] The rotation of the first shaft 11 drives the cleaning teeth on the first shaft to rotate, so as to break up the ash slag hardened on the inner wall of the ash hopper 2 and stir up the scum floating on the water surface.

[0082] When the ash hopper 2 becomes clogged, remove the rotary handle 18 and tighten the set screw 156 with a wrench to press against the elastic element 154.

[0083] Then, tap the tapping end 17 to make the first shaft 11 reciprocate; the reciprocating motion of the first shaft 11 drives the cleaning teeth in the ash hopper 2 to reciprocate in the ash hopper to clear the ash hopper 2.

[0084] Specifically, when not in use, the rotating handle 18 will automatically rotate vertically downwards due to gravity, and the teeth inside the ash hopper 2 will also be in a vertical direction, reducing the impact on the falling ash.

[0085] In use, rotating the crank handle 18 causes the first shaft 11 to rotate, driven by the cooperation of the bearing seat 141 and bearing 142, the sliding shaft 152 and cover 151, the planar thrust bearing 153, and the lubricating grease. The action of the cleaning teeth can disperse the ash slag hardened on the inner wall of the ash hopper and stir up the floating scum on the water surface, preventing ash slag from hardening and reducing the risk of ash hopper blockage.

[0086] If ash hopper 2 is clogged, remove the rotary handle 18 and tighten the set screw 156 with a wrench to apply force to the spring. Then, tap the end 17 with a hammer. Due to the action of the bearing assembly 14, guide rail 13, and tail assembly 15, the cleaning teeth inside ash hopper 2 will reciprocate within the ash hopper. Because of the presence of the first limit block 19 and the second limit block 20, the bearing seat 141 and bearing 142 will not derail during the reciprocating motion. During this process, the rotary handle 18 can be installed and removed at any time to adjust the position of the cleaning teeth, so as to break up the ash and slag that is caked or blocking the ash outlet from all directions and multiple angles.

[0087] In some embodiments, this application also provides a furnace bottom ash conveyor, comprising:

[0088] Gray bucket 2; and

[0089] The ash hopper anti-clogging and unblocking device 1 above.

[0090] In some embodiments, this application also provides an incinerator, including an ash conveyor at the bottom of the furnace.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-described embodiments are merely illustrative of several implementation methods of this application and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application.

Claims

1. A device for preventing blockage and clearing ash hoppers, characterized in that, include: A first shaft includes a first end and a second end; the first shaft is used to be mounted on the ash hopper and the first end and the second end extend out of the ash hopper. A dust removal tool is mounted on the first shaft and is used for dust removal from the ash hopper. Slide rail; A bearing assembly is connected to the first end and is used to support the first end; the bearing assembly is disposed on the slide rail and can reciprocate along the slide rail. as well as The tail assembly, connected to the second end, is used to carry the second end.

2. The ash hopper anti-clogging and unblocking device according to claim 1, characterized in that, The tail assembly includes: Enclosure; A sliding pivot is disposed inside the housing, and one end of the sliding pivot is connected to the end of the second end; A planar thrust bearing is disposed within the housing, one end of the planar thrust bearing being connected to the other end of the sliding shaft; and An elastic element, located inside the housing, is connected to the other end of the planar thrust bearing and is used for resetting the planar thrust bearing.

3. The ash hopper anti-clogging and unblocking device according to claim 2, characterized in that, The tail assembly also includes: A top plate, disposed within the housing and connected to the elastic element, is used to abut against the elastic element; and A set screw is provided on the cover and is used to abut against the top plate.

4. The ash hopper anti-clogging and unblocking device according to claim 3, characterized in that: The cover is provided with an oil nozzle, which is used to add lubricant to the sliding shaft; The sliding shaft is equipped with a skeleton oil seal to prevent the lubricant from overflowing.

5. The ash hopper anti-clogging and unblocking device according to claim 1, characterized in that, Also includes: A striking end is provided at the end of the first end and is used to strike the first shaft; as well as A rotary crank, mounted on the striking end, is used to drive the first shaft to rotate.

6. The ash hopper anti-clogging and unblocking device according to claim 5, characterized in that: The cleaning tool is a cleaning tooth, and multiple cleaning teeth are arranged in parallel and staggered at equal intervals on the first shaft; The installation direction of the rotary handle must be parallel to the dust removal teeth.

7. The ash hopper anti-clogging and unblocking device according to claim 1, characterized in that: The slide rail is provided with a first limiting block and a second limiting block; The bearing assembly is located between the first limiting block and the second limiting block.

8. A furnace bottom ash conveyor, characterized in that, include: Ash bucket; as well as The ash hopper anti-clogging and unblocking device as described in any one of claims 1-7.

9. An incinerator, characterized in that, include: The furnace bottom ash conveyor as described in claim 8.

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