CN220893109U - Step-by-step device for cleaning air preheater - Google Patents
Step-by-step device for cleaning air preheater Download PDFInfo
- Publication number
- CN220893109U CN220893109U CN202322485522.2U CN202322485522U CN220893109U CN 220893109 U CN220893109 U CN 220893109U CN 202322485522 U CN202322485522 U CN 202322485522U CN 220893109 U CN220893109 U CN 220893109U
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- CN
- China
- Prior art keywords
- shifting block
- air preheater
- square hole
- stepping
- cleaning
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- 238000004140 cleaning Methods 0.000 title claims abstract description 26
- 230000007306 turnover Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Incineration Of Waste (AREA)
Abstract
The utility model discloses a stepping device, in particular to a stepping device for cleaning an air preheater, which comprises: the push-pull rod is provided with a shifting block seat, a stepping shifting block is arranged in the middle of the shifting block seat in a relative rotating mode, connecting blocks are arranged on two sides of the shifting block seat, groove-shaped blocks are arranged on the connecting blocks, grooves of the groove-shaped blocks are held on square hole plates, and square holes which are arranged at equal intervals are formed in the square hole plates. The utility model uses the system composed of the shifting block seat, the shifting block, the square hole plate and the guide support to drive the ash removing trolley of the air preheater, and can push the ash removing device to remove ash in long distance through the short-stroke air cylinder, thereby having good use effect. In addition, the equipment occupies little space of the external site of the furnace, and has better adaptability.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a stepping device for cleaning an air preheater.
Background
At present, in order to improve the heat efficiency of a boiler, an air preheater is usually arranged at the tail part of the boiler to recover redundant heat, but ash can be accumulated on the surface layer of the air preheater when the air preheater works, so that the heat efficiency of the air preheater is greatly reduced, and even smoke circulation is hindered; meanwhile, sulfides generally exist in the tail gas of the boiler, and the sulfides can corrode the heat exchange tubes of the air preheater. Therefore, the air cleaner needs to be subjected to ash removal operation. The existing contact type ash removing equipment mainly drives ash removing elements to move back and forth between heat exchange tubes of the air preheater through an air cylinder, but when the stroke of the ash remover is long, the air cylinder guide rod directly drives the ash remover to move horizontally in a reciprocating mode, so that the requirement on the stroke of the air cylinder is high, and the stability is not enough.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a stepping device for cleaning an air preheater so as to solve the existing technical problems.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a stepping device for cleaning an air preheater, which comprises: the push-pull rod and the cylinder that is used for driving the push-pull rod motion, be provided with the shifting block seat on the push-pull rod, relative pivoted is provided with step-by-step shifting block in the middle of the shifting block seat, shifting block seat both sides are provided with the connecting block, be provided with the cell type piece on the connecting block, the recess of cell type piece is embraced on square hole board, square hole that has the equidistance to arrange on the square hole board.
Preferably, when the stepping shifting block rotates left and right, the bottom plate of the shifting block seat can block the shifting teeth of the stepping shifting block to limit the rotation range of the stepping shifting block.
Preferably, the square hole plate is fixed on the upper part of the ash removal trolley by the connecting plate, limiting blocks are arranged at two ends of the square hole plate, and the limiting blocks are arranged in square holes at two ends of Fang Kongban.
Preferably, the push-pull rod is connected with a guide rod, the guide rod penetrates out of the shaft sleeve, the shaft sleeve is arranged at the rear end of the cylinder seat, a cylinder is arranged on the cylinder seat, and a piston rod of the cylinder is fixedly connected with the guide rod.
Preferably, the poking teeth of the stepping poking block can be inserted into square holes of the square hole plate.
Preferably, the square hole plate is connected with a supporting plate connected with the ash removal trolley.
Preferably, the step shifting block is further provided with a turnover bump block.
Preferably, the stepping shifting block is provided with a first screw, the shifting block seat is provided with an arc-shaped through hole, and the first screw penetrates through the through hole.
Preferably, a second screw is arranged on the shifting block seat, and a tension spring is connected between the first screw and the second screw.
The beneficial effects of the utility model are as follows: the utility model uses the system composed of the shifting block seat, the shifting block, the square hole plate and the guide support to drive the ash removing trolley of the air preheater, and can push the ash removing device to remove ash in long distance through the short-stroke air cylinder, thereby having good use effect. In addition, the equipment occupies little space of the external site of the furnace, and has better adaptability.
Drawings
The foregoing aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 2 is a schematic structural view showing a part of a structure of a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 3 is a schematic structural view showing a part of the structure of a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 4 is a schematic view showing the structure of a step dial block of a step device for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 5 is a schematic view showing the structure of the position of a stepping dial of a stepping device for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 6 is a schematic view showing the structure of a stopper of a step-by-step device for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 7 is a schematic view showing a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model;
FIG. 8 is a schematic structural view showing a part of the structure of a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model;
fig. 9 is a schematic structural view of a part of the structure of a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model;
Fig. 10 is a schematic structural view of a step-by-step apparatus for cleaning an air preheater according to an embodiment of the present utility model.
Description of the reference numerals
In fig. 1-10, a cylinder 1; a guide rod 2; a cylinder block 3; a flange 4; a push-pull rod 5; a support plate 6; a limiting block 7; a square hole plate 8; square holes 9; a channel block 10; a connection block 11; a step dial 12; a first screw 13; a second screw 14; overturning the bump block 15; a setting tooth 16; a rotating shaft 17.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a stepping device for cleaning an air preheater, which comprises: the push-pull rod 5, be provided with the shifting block seat on the push-pull rod 5, the shifting block seat middle relative rotation is provided with step-by-step shifting block 12, and shifting block seat both sides are provided with connecting block 11, are provided with groove type piece 10 on the connecting block 11, and the recess of groove type piece 10 is embraced on square hole board 8, has square hole 9 that the equidistance was arranged on the square hole board 8.
The composition is as follows: the pneumatic stepping driving device comprises an air cylinder 1, an air cylinder seat 3, a guide rod 2, a push-pull rod 5, a shifting block seat, a stepping shifting block 12 and a square hole plate 8. The driving part comprises a cylinder 1, a cylinder seat 3, a guide rod 2 and a push-pull rod 5; the bidirectional conversion stepping mechanism comprises a shifting block seat, a stepping shifting block 12 and a square hole plate 8;
The air cylinder 1 is arranged at the front end of the air cylinder seat 3, a piston rod is connected with the guide rod 2 through threads, a connecting flange 4 is arranged at the rear end of the guide rod 2, the guide rod 2 penetrates out of a shaft sleeve at the rear end of the air cylinder seat 3 and is connected with a flange plate at the front end of the push-pull rod 5; the other end of the push-pull rod 5 is fixed with a shifting block seat, the stepping shifting block 12 is arranged in a groove of the shifting block seat, holes are arranged on two side walls of the groove, a shaft is arranged in the holes, the stepping shifting block 12 can rotate left and right around the shaft, and the bottom surface of the groove of the shifting block seat contacts with the end surface of the shifting tooth 16 to limit the rotation range of the stepping shifting block 12. The two sides of the shifting block seat are provided with connecting blocks 11, a groove-shaped block 10 is arranged in a clamping groove at the upper part of the connecting blocks 11, a groove of the groove-shaped block 10 holds the edge of the square hole plate 8, two ends of the square hole plate 8 are provided with connecting plates, the connecting plates are fixed on a frame of the ash removal trolley, the square hole plate 8 is provided with square holes 9 which are equidistantly arranged, two ends of the square hole plate 8 are provided with limiting blocks 7, and the limiting blocks 7 are arranged in notches at two ends of the square hole plate 8; the poking teeth 16 of the stepping poking block 12 are inserted into the square holes 9 of the square hole plate 8.
Principle of: when the piston rod extends forwards, the stepping shifting block 12 is pushed to move forwards, the stepping shifting block 12 is blocked by the rear edge of the square hole to rotate around the shaft to be separated from the square hole, and slides into the square hole 9 in front along the lower surface of the square hole plate 8; the piston rod retracts to pull the stepping shifting block 12, the end face of the shifting tooth 16 of the stepping shifting block 12 props against the front surface of the square hole 9, the ash removal trolley is driven to step a certain distance towards the retracting direction of the cylinder 1, and the ash removal trolley is circularly stepped; when the stepping shifting block 12 reaches the front end of the square hole plate 8, the piston rod extends forwards to push the stepping shifting block 12 to move forwards, the overturning bump block 15 on the stepping shifting block 12 is blocked by the limiting block 7, and the shifting block is driven to overturn backwards, so that the reversing gear 16 is lifted, and the reversing of the stepping shifting block 12 is realized; after the stepping shifting block 12 is changed, the air cylinder 1 retracts to drive the stepping shifting block 12 to move backwards, the overturning bump block 15 is not blocked by the limiting block 7, the stepping shifting block 12 moves backwards and rotates around the shaft to slide into the rear square hole 9 along the lower surface of the square hole plate 8, a piston rod stretches out to push the stepping shifting block 12, the end face of the shifting tooth 16 of the stepping shifting block 12 props against the rear surface of the square hole 9 to drive the ash removal trolley to step for a certain distance towards the extending direction of the air cylinder 1, and the ash removal trolley is circularly stepped; reaching the rear end of the square hole plate 8 and turning over again. The length of stepping distance = square hole 9 interval, cylinder stroke = square hole 9 interval + cylinder stroke allowance, and the allowance generally takes 5-10 mm.
The key point of reversing the stepping shifting block 12 is that the bumping block is arranged in the middle of the connecting surface of the two shifting teeth 16, the bumping block height is lower than the limiting block 7 when the shifting block is vertical, and the bumping block height is higher than the limiting block 7 when the shifting block slides along the bottom surface, so that the overturning reversing can be realized. The shape, weight, gravity center and rotation angle of the stepping shifting block 12 are specially designed, the shifting block is designed in plane symmetry, the gravity center is in a symmetry plane, when the shifting block deflects leftwards and rightwards and is influenced by gravity, the shifting block can necessarily turn to the direction in which the gravity center is located, the rotation angle is 2 times larger than the maximum rotation angle when the shifting block steps, the stepping shifting block can be kept stable during working, and the shifting block cannot be turned to the other end accidentally. The gravity center is as close as possible to the rotation center, the weight is reduced as much as possible, and the moment required by the turning of the shifting block is reduced.
Optimally, in order to ensure that the shifting block reliably turns, the first screw 13 is arranged on the side surface of the shifting block, extends out of the arc-shaped long hole of the shifting block seat and is provided with the tension spring, and the other end of the tension spring is fixed on the second screw 14 on the shifting block seat.
Preferably, the channel block 10 is made of wear-resistant material, and can be replaced by rollers or the like arranged above and below to reduce resistance and limit other guiding and supporting structural forms running along the edge of the square hole plate 8.
Preferably, the cylinder 1 can be replaced by a hydraulic cylinder, an electric cylinder or the like with a device for outputting linear motion.
The application uses a system composed of the shifting block seat, the shifting block, the square hole plate 8 and the guide support to drive the ash removing trolley of the air preheater, and can push the ash removing device to remove ash in a long distance through the short-stroke air cylinder 1, thereby having good use effect. In addition, the equipment occupies little space of the external site of the furnace, and has better adaptability.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (9)
1. A step-by-step apparatus for cleaning an air preheater, comprising: push-and-pull rod and be used for driving push-and-pull rod motion's cylinder, its characterized in that: be provided with the shifting block seat on the push-and-pull rod, relative pivoted is provided with step-by-step shifting block in the middle of the shifting block seat, shifting block seat both sides are provided with the connecting block, be provided with the cell type piece on the connecting block, the recess of cell type piece is embraced on square hole board, square hole that has the equidistance to arrange on the square hole board.
2. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: when the stepping shifting block rotates left and right, the bottom plate of the shifting block seat can block the shifting teeth of the stepping shifting block to limit the rotation range of the stepping shifting block.
3. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: the square hole plate is fixed on the upper portion of the ash removal trolley through a connecting plate, limiting blocks are arranged at two ends of the square hole plate, and the limiting blocks are arranged in square holes at two ends of Fang Kongban.
4. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: the push-pull rod is connected with a guide rod, the guide rod penetrates out of the shaft sleeve, the shaft sleeve is arranged at the rear end of the cylinder seat, a cylinder is arranged on the cylinder seat, and a piston rod of the cylinder is fixedly connected with the guide rod.
5. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: the poking teeth of the stepping poking block can be inserted into square holes of the square hole plate.
6. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: the square hole plate is connected with a supporting plate which is used for being connected with the ash removal trolley.
7. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: the stepping shifting block is also provided with a turnover touching block.
8. A step-by-step apparatus for cleaning an air preheater as set forth in claim 1, wherein: the stepping shifting block is provided with a first screw, the shifting block seat is provided with an arc-shaped through hole, and the first screw penetrates through the through hole.
9. The step-by-step apparatus for cleaning an air preheater as set forth in claim 8, wherein: the pulling block seat is provided with a second screw, and a tension spring is connected between the first screw and the second screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322485522.2U CN220893109U (en) | 2023-09-13 | 2023-09-13 | Step-by-step device for cleaning air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322485522.2U CN220893109U (en) | 2023-09-13 | 2023-09-13 | Step-by-step device for cleaning air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220893109U true CN220893109U (en) | 2024-05-03 |
Family
ID=90867311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322485522.2U Active CN220893109U (en) | 2023-09-13 | 2023-09-13 | Step-by-step device for cleaning air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220893109U (en) |
-
2023
- 2023-09-13 CN CN202322485522.2U patent/CN220893109U/en active Active
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