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

Abstract

The invention relates to an anti-blocking and dredging device and method 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, a second shaft and a third shaft, 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] The present application relates to the technical field of ash cleaning, and in particular to an ash hopper anti-blocking and dredging device and method, a furnace bottom ash leakage conveyor, and an incinerator. Background Art

[0002] As the status of domestic waste treatment industry in people's life becomes more and more important, the safety, environmental protection and stable operation of waste incineration power plants have become the focus of people's attention. In the use of incinerator ash system equipment, various ash conveying equipment often have ash blockage and compaction problems.

[0003] In particular, the water-sealed scraper-type furnace bottom ash conveyor used in most waste-to-energy plants, although its water cover can effectively ensure the sealing of the furnace, it will pick up water splashes and produce a large amount of water vapor when the ash falls, which can easily cause the fallen ash to stick to the inner wall of the ash hopper. Under the action of primary wind with a temperature of up to 190°C, the adhered ash quickly hardens, so the probability of the furnace bottom ash conveyor inlet being blocked is very high.

[0004] In addition, in some areas, the garbage contains a lot of fine dust or other lightweight, fine slag, which will float on the water surface, greatly increasing the probability of ash compaction and blockage at the inlet of the furnace bottom ash conveyor and the outlet of the incinerator bottom ash hopper.

[0005] This type of problem is common and frequent in waste incineration power plants that use water-sealed scraper-type furnace bottom ash conveyors. It has long troubled boiler maintenance personnel, seriously wasted manpower and material resources on the maintenance front line, and threatened the stable operation of the unit. Summary of the invention

[0006] In order to overcome the problems existing in the above-mentioned prior art, the present application proposes an ash hopper anti-blocking and unblocking device and method, a furnace bottom ash conveyor, and an incinerator, which can prevent the furnace bottom ash conveyor and the furnace bottom ash hopper from becoming compacted and blocked, and can also dredge the ash when blockage occurs.

[0007] The present application provides an ash hopper anti-blocking and dredging device, comprising:

[0008] A first shaft, comprising a first end and a second end; the first shaft is used to be arranged on the ash hopper, and the first end and the second end extend out of the ash hopper;

[0009] A dust cleaning tool, arranged on the first shaft, used for cleaning dust in the ash hopper;

[0010] Slide rails;

[0011] a bearing assembly connected to the first end and used to bear the first end; the bearing assembly is disposed on the slide rail and can slide back and forth along the slide rail; and

[0012] The tail assembly is connected to the second end and is used to support the second end.

[0013] Furthermore, the tail assembly includes:

[0014] Housing;

[0015] A sliding shaft is disposed in the housing, one end of the sliding shaft being connected to the end of the second end;

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

[0017] An elastic member is arranged in the cover shell and 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 in the housing, connected to the elastic member, and used to abut against the elastic member; and

[0020] A top screw is arranged on the cover shell and is used for pressing against the top plate.

[0021] Furthermore, the cover shell is provided with an oil nozzle, and the oil nozzle is used to add lubricant to the sliding shaft;

[0022] A skeleton oil seal is arranged on the sliding shaft to prevent the lubricant from overflowing.

[0023] Furthermore, it also includes:

[0024] a striking end, disposed at an end of the first end, for striking the first shaft; and

[0025] A rotating crank is arranged on the striking end and is used for driving the first shaft to rotate.

[0026] Furthermore, the cleaning tool is a cleaning tooth, and a plurality of the cleaning teeth are equidistantly and staggeredly arranged in parallel on the first shaft;

[0027] The installation direction of the rotating crank handle needs to be parallel to the cleaning teeth.

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

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

[0030] In addition, the present application also provides an ash hopper anti-blocking and dredging method, which uses the ash hopper anti-blocking and dredging device as described above, including:

[0031] The rotating crank moves vertically downward due to gravity, and the cleaning teeth in the ash hopper are in a vertical direction;

[0032] Rotate the rotary crank to drive the first shaft to rotate;

[0033] The rotation of the first shaft drives the cleaning teeth on the first shaft to rotate, so as to break up the ash slag compacted on the inner wall of the ash hopper and disturb the scum floating on the water surface;

[0034] When the ash hopper is clogged, remove the rotating crank handle and tighten the top screw with a wrench to press against the elastic member;

[0035] The knocking end is struck to make the first shaft reciprocate; the reciprocating motion of the first shaft drives the cleaning teeth in the ash hopper to reciprocate in the ash hopper to dredge the ash hopper.

[0036] In addition, the present application also provides a furnace bottom ash leakage conveyor, comprising:

[0037] Ash hopper; and

[0038] The ash hopper anti-blocking and dredging device as described above.

[0039] In addition, the present application also provides an incinerator, comprising: the furnace bottom ash conveyor as described above.

[0040] Compared with the prior art, this application has the following beneficial effects:

[0041] The ash hopper anti-blocking and unblocking device of the present application has a simple structure and is easy to install. It is suitable for batch production and installation, and can effectively eliminate the risk of ash compaction and blockage 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 conveniently and quickly dredge the blockage caused by ash compaction, greatly reducing the waste of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0044] Figure 1 It is a schematic diagram of the overall structure of an ash hopper anti-blocking and dredging device in an embodiment of the present application;

[0045] Figure 2 This is a left view of the embodiment of the present application when the crank is rotated vertically downward;

[0046] Figure 3 In the embodiment of this application Figure 2 A partial enlarged view of BB;

[0047] Figure 4 In the embodiment of this application Figure 1 A partial enlarged view of AA. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0049] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms and the like is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device, element, module, system, platform or device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The following description of the present application is only understood as a description of individual embodiments of the technical solution of the present application. Other embodiments are not reflected in the following description, but it does not mean that the present application excludes these other embodiments, and the technical solution of the present application is not limited to the specific implementation methods described below, and the protection scope of the present application is not limited to only the specific implementation methods described below. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application.

[0050] It should be noted that if the terms "first", "second", etc. appear in the specification and claims of the present application and the above-mentioned drawings, the description is only used to distinguish similar objects, and is not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a system, product or device comprising a series of units or modules or modules or components is not necessarily limited to those units or modules or modules or components clearly listed, but may include other components that are not clearly listed or inherent to these systems, products or devices.

[0051] The technical solution of the present application is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0052] In some embodiments, Figure 1 As shown, the present application provides an ash hopper anti-blocking and unblocking device 1, which can be arranged on the ash hopper 2. The ash hopper anti-blocking and unblocking device can stir the ash in the ash hopper 2 to effectively prevent the ash slag from being compacted and blocked at the inlet of the furnace bottom ash conveyor and the outlet of the ash hopper at the bottom of the incinerator, and can conveniently and quickly unblock the ash blockage caused by the compaction of the ash slag. Specifically, the ash hopper anti-blocking 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:

[0053] The first shaft 11 has two ends including a first end 111 and a second end 112; the first shaft 11 is disposed on the ash hopper 2, and the first end 111 and the second end 112 extend 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 refer to a length of the left and right ends of the first shaft 11 close to the two ends. The first shaft 11 can be a stainless steel shaft.

[0054] Specifically, holes of suitable height can be opened symmetrically on both sides of the ash hopper 2 at the entrance of the furnace bottom ash conveyor. The height can be selected so as not to affect the operation of the chain. The first shaft 11 is inserted into the ash hopper 2, and the first end 111 and the second end 112 of the first shaft 11 both pass through the holes.

[0055] The cleaning tool 12 is disposed on the first shaft 11 , and is used to clean the ash hopper 2 .

[0056] 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 compacted ash and scum on the water surface to achieve the purpose of preventing blockage.

[0057] The slide rails 13 can be two, and the slide rails 13 are welded to the head base 16. The head base 16 is horizontally welded to the steel plate of the outer wall of the furnace bottom ash conveyor entrance, and the reinforcing rib plate can be welded below it according to the on-site conditions.

[0058] The bearing assembly 14 is connected to the first end 111 , and is used to support the first end 111 . The bearing assembly 14 is disposed on the slide rail 13 and can slide back and forth along the slide rail 13 .

[0059] Specifically, Figure 1-2 As shown, the bearing assembly 14 includes a bearing seat 141 and a bearing 142. The bottom 141 of the bearing seat is installed on the slide rail 13. Figure 3 As shown, a sliding block 143 is provided at the bottom of the bearing seat 141, and the sliding block 143 is provided on the slide rail 13. In some embodiments, the sliding block 143 is welded to the bearing seat 141, one at each end of the bearing seat 141, and two slide rails 13 corresponding to the sliding block 143 are welded to the head base 16.

[0060] The tail assembly 15 is connected to the second end 112 , and the tail assembly 15 is used to support the second end 112 .

[0061] In some embodiments, Figure 4 As shown, the tail assembly 15 may include a cover 151 , a sliding shaft 152 , a planar thrust bearing 153 and an elastic member 154 .

[0062] The cover 151 provides a space for installing the sliding shaft 152 , the plane thrust bearing 153 and the elastic member 154 . The cover 151 can be directly fixedly connected to the side wall of the ash hopper 2 .

[0063] Specifically, holes are symmetrically opened at a suitable height (preferably without affecting the operation of the chain) on both sides of the inlet ash hopper of the furnace bottom ash conveyor, the welded first shaft 11 is passed through the holes in the ash hopper, a stuffing box is installed between the cover 151 and the ash hopper, and is seal-welded to the outer wall of the ash hopper. After graphite packing is filled in the stuffing box, the packing gland 159 is connected to the stuffing box with bolts.

[0064] The sliding shaft 152 is disposed in the housing 151 , and one end of the sliding shaft 152 is connected to the end of the second end 112 .

[0065] Specifically, the sliding shaft 152 is made of 45# round steel and can be 45-55 mm long. The diameter of the sliding shaft 152 needs to be 8-11 mm larger than the outer diameter of the first shaft 11 and 1-3 mm smaller than the outer diameter of the housing 151. The surface of the sliding shaft 152 can be chrome-plated with a thickness of 0.02-0.03 mm.

[0066] The planar thrust bearing 153 is disposed in the housing 151 , and one end of the planar thrust bearing 153 is connected to the other end of the sliding shaft 152 .

[0067] The elastic member 154 may be a spring, a spring sheet or other elastic parts. The elastic member 154 is disposed in the cover 151 . The elastic member 154 is connected to the other end of the planar thrust bearing 153 . The elastic member 154 is used to reset the planar thrust bearing 153 .

[0068] Specifically, the second end 112 of the first shaft 11 is connected to the sliding shaft 152 and can realize axial rotation through the planar thrust bearing 153 , and can also realize axial reciprocating movement through the elastic member 154 .

[0069] In some embodiments, the tail assembly 15 further includes a top plate 155 and a top screw 156 .

[0070] The top plate 155 is disposed in the housing 151 . The top plate 155 is connected to the elastic member 154 . The top plate 155 is used to abut against the elastic member 154 .

[0071] The top screw 156 is disposed on the cover shell 151 , and the top screw 156 is used to press against the top plate 155 .

[0072] Specifically, the inner diameter of the cover 151 in the tail assembly 15 is larger than the first shaft 11 , the rear end of the cover 151 is closed and sealed, and a hole is opened at the center of the rear end of the cover 151 to install the top screw 156 .

[0073] In some embodiments, the cover 151 is provided with an oil nozzle 157 , and the oil nozzle 157 is used to add lubricant to the sliding shaft 152 .

[0074] A skeleton oil seal 158 is provided on the sliding shaft 152 to prevent the lubricant from overflowing.

[0075] Specifically, a hole is opened and tapped at the middle tail portion of the cover shell 151, and a grease nipple 157 is installed to enhance the lubrication effect of the internal components of the assembly. A groove is opened 5 mm from the front end of the sliding turn 152 to install a skeleton oil seal 158 to ensure that the lubricating grease does not overflow.

[0076] In some embodiments, Figure 1 As shown, it also includes a striking end 17 , which is arranged at the end of the first end 111 , and is used to strike the first shaft 11 .

[0077] The rotating crank 18 is disposed on the striking end 17 , and the rotating crank 18 is used to drive the first shaft 11 to rotate.

[0078] Specifically, the striking end 17 can be 60 mm long and welded to the end of the first end 111 of the first shaft 11. The rotating crank 18 is installed at the connection between the first shaft 11 and the striking end 17 by key and slot matching. Specifically, a key slot can be opened on the proximal side of the striking end 17, and the key slot position can be on the same side as the dust cleaning tool 12, and the rotating crank 18 is fixed to the head of the first shaft 11 by slot and key matching.

[0079] When the rotating crank 18 is rotated, the cleaning tool 12 can be driven to rotate together, which can break up the compacted ash and scum on the water surface, thereby achieving the purpose of preventing blockage; the bearing seat 141 and the bearing 142, the plane thrust bearing 153 and the sliding block 143 can support the first shaft 11, reduce its friction coefficient during rotation, and grease can be added through the grease nipple during use to make the rotation smoother.

[0080] If the inlet of the furnace bottom ash conveyor and the outlet of the incinerator bottom ash hopper are blocked, the rotating crank 18 can be removed and the hammer can be used to continuously hit the knocking end 17. Since the bearing seat 141 is installed on the slide rail 13, the external force will cause the first shaft 11 to move forward, and the tail assembly has an elastic member 154 and a sliding shaft 152. The elastic member 154 will rebound the first shaft 11 after being compressed to a certain position. Continuous knocking will cause the first shaft 11 to drive the cleaning tool 12 to reciprocate in the ash hopper. In this process, the position of the cleaning tool 12 can be adjusted by rotating the crank 18, so as to clear the blocked parts in all directions and at multiple angles.

[0081] In some embodiments, the cleaning tool 12 is a cleaning tooth, and a plurality of cleaning teeth are equidistantly and parallelly arranged on the first shaft 11. The installation direction of the rotating crank 18 is parallel to the cleaning teeth, so as to determine the position of the cleaning teeth in the ash hopper.

[0082] In some embodiments, a first limit block 19 and a second limit block 20 are disposed on the slide rail 13 ; the bearing assembly 14 is located between the first limit block 19 and the second limit block 20 .

[0083] Specifically, a first limit block 19 and a second limit block 20 are installed on the slide rail 13, and a first limit block 19 and a second limit block 20 are also installed on the other slide rail 13. There are four limit blocks in total, which are respectively fixed at the front and rear positions of the bearing seats on the two guide rails.

[0084] In some embodiments, the present application also provides a method for preventing and unblocking an ash hopper, using the above ash hopper anti-blocking and unblocking device, which may specifically include:

[0085] The crank handle 18 is rotated downward vertically due to gravity, and the cleaning teeth in the ash hopper 2 are in a vertical direction;

[0086] Rotating the rotary crank 18 can drive the first shaft 11 to rotate;

[0087] The first shaft 11 rotates to drive the cleaning teeth on the first shaft to rotate, so as to break up the ash slag on the inner wall of the ash hopper 2 and disturb the scum floating on the water surface;

[0088] When the ash hopper 2 is clogged, remove the rotating crank 18 and tighten the top screw 156 with a wrench to press against the elastic member 154;

[0089] Then, the knocking end 17 is struck 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 dredge the ash hopper 2.

[0090] Specifically, when the present application is not in use, the rotating crank 18 will automatically move vertically downward due to gravity, and at this time, the shifting teeth in the ash hopper 2 will also be in a vertical direction, reducing the impact on falling ash.

[0091] When in use, the rotating crank 18 is turned, and the first shaft belt 11 drives the cleaning teeth thereon to rotate under the cooperation of the bearing seat 141 and the bearing 142, the sliding shaft 152 and the cover 151, the plane thrust bearing 153 and the effect of lubricating grease. The cleaning teeth can play the role of breaking up the ash slag on the inner wall of the ash hopper and disturbing the floating slag on the water surface, thereby preventing the ash slag from being hardened and reducing the risk of clogging the ash hopper.

[0092] If the ash hopper 2 is clogged, remove the rotary crank 18 and tighten the top screw 156 with a wrench to force the spring. Then use a hammer to hit the end 17. Due to the action of the bearing assembly 14, the guide rail 13 and the tail assembly 15, the cleaning teeth in the ash hopper 2 will reciprocate in the ash hopper. Because of the presence of the first limit block 19 and the second limit block 20, the bearing seat 141 and the bearing 142 will not derail when reciprocating. During this process, the rotary crank 18 can be installed and removed at any time, and the position of the cleaning teeth can be adjusted to break the ash residue that is compacted or blocked at the ash outlet in all directions and at multiple angles.

[0093] In some embodiments, the present application further provides a furnace bottom ash conveyor, comprising:

[0094] Ash Hopper 2; and

[0095] The above ash hopper anti-blocking and dredging device 1.

[0096] In some embodiments, the present application also provides an incinerator, including an ash conveyor at the bottom of the furnace.

[0097] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0098] The embodiments described above only express several implementation methods of the present application, which are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. For ordinary technicians in this field, they can make several modifications and improvements without departing from the concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A ash hopper anti-blocking and dredging device, characterized in that: include: A first shaft, comprising a first end and a second end; the first shaft is used to be arranged on the ash hopper, and the first end and the second end extend out of the ash hopper; A dust cleaning tool, arranged on the first shaft, used for cleaning dust in the ash hopper; Slide rails; A bearing assembly connected to the first end and used to bear the first end; the bearing assembly is disposed on the slide rail and can slide back and forth along the slide rail; as well as The tail assembly is connected to the second end and is used to support the second end.

2. The ash hopper anti-blocking and dredging device according to claim 1 is characterized in that: The tail assembly comprises: Housing; A sliding shaft is disposed in the housing, one end of the sliding shaft being connected to the end of the second end; A plane thrust bearing is disposed in the housing, one end of the plane thrust bearing is connected to the other end of the sliding shaft; and An elastic member is arranged in the cover shell and connected to the other end of the planar thrust bearing, and is used for resetting the planar thrust bearing.

3. The ash hopper anti-blocking and dredging device according to claim 2 is characterized in that: The tail assembly also includes: a top plate, disposed in the housing, connected to the elastic member, and used to abut against the elastic member; and A top screw is arranged on the cover shell and is used for pressing against the top plate.

4. The ash hopper anti-blocking and dredging device according to claim 3 is characterized in that: The housing is provided with an oil nozzle, and the oil nozzle is used to add lubricant to the sliding shaft; A skeleton oil seal is arranged on the sliding shaft to prevent the lubricant from overflowing.

5. The ash hopper anti-blocking and dredging device according to claim 1, characterized in that: Also includes: A striking end, arranged at the end of the first end, for striking the first shaft; as well as A rotating crank is arranged on the striking end and is used for driving the first shaft to rotate.

6. The ash hopper anti-blocking and dredging device according to claim 5 is characterized in that: The cleaning tool is a cleaning tooth, and a plurality of the cleaning teeth are equidistantly and parallelly arranged on the first shaft; The installation direction of the rotating crank handle needs to be parallel to the cleaning teeth.

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

8. A method for preventing and unblocking an ash hopper, using the ash hopper preventing and unblocking device according to any one of claims 1 to 7, characterized in that: include: The rotating crank moves vertically downward due to gravity, and the cleaning teeth in the ash hopper are in a vertical direction; Rotate the rotary crank to drive the first shaft to rotate; The rotation of the first shaft drives the cleaning teeth on the first shaft to rotate, so as to break up the ash slag compacted on the inner wall of the ash hopper and disturb the scum floating on the water surface; When the ash hopper is clogged, remove the rotating crank handle and tighten the top screw with a wrench to press against the elastic member; The knocking end is struck to make the first shaft reciprocate; the reciprocating motion of the first shaft drives the cleaning teeth in the ash hopper to reciprocate in the ash hopper to dredge the ash hopper.

9. A furnace bottom ash conveyor, characterized in that: include: Ash hopper; as well as An ash hopper anti-blocking and dredging device as described in any one of claims 1 to 7.

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

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