CN114593076B - Low-resistance combustion-promoting secondary air blower structure - Google Patents
Low-resistance combustion-promoting secondary air blower structure Download PDFInfo
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- CN114593076B CN114593076B CN202111611963.1A CN202111611963A CN114593076B CN 114593076 B CN114593076 B CN 114593076B CN 202111611963 A CN202111611963 A CN 202111611963A CN 114593076 B CN114593076 B CN 114593076B
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- shell
- main shaft
- air inlet
- sleeve
- port
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 238000003825 pressing Methods 0.000 claims description 21
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241000886569 Cyprogenia stegaria Species 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- 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
Abstract
The invention discloses a low-resistance combustion-promoting secondary air blower structure. The novel expansion sleeve comprises a shell, wherein a rotor assembly is arranged in the shell, an air inlet port and an air outlet port are formed in the shell, sealing devices are arranged at the air inlet port and the air outlet port, each sealing device comprises an expansion sleeve, guide rings are arranged at two ends of each expansion sleeve, and the two expansion sleeves are respectively arranged on the air inlet port and the air outlet port through the guide rings. The beneficial effects of the invention are as follows: by the design of the expansion sleeve between the pipelines, the installation error between the pipelines can be compensated, the thermal expansion difference between the pipelines due to different wall temperatures can be compensated, the damage caused by strength, instability and pull-out damage to the pipelines can be avoided, and the tightness between the connecting pipeline and the air inlet and outlet ports is improved; the annular sealing blocks are arranged at the positions of the main shaft extending out of the through holes of the shell to seal, so that good air tightness of the shell is ensured, and air leakage loss of the shell is reduced.
Description
Technical Field
The invention relates to the related technical field of ventilators, in particular to a low-resistance combustion-promoting secondary air blower structure.
Background
The secondary air blower is a supplementary measure for improving the combustion quality, is an adjusting channel for improving the combustion efficiency, only needs to supplement oxygen after flame, is an indispensable part for stabilizing combustion supporting effect at present, and is more and more required for the secondary air blower in the market at present. The secondary air blower is matched with the primary air blower specially, the air quantity adjustment and the proportion between the secondary air blower and the primary air blower are key to the boiler combustion technology, and the secondary air blower plays a great role in combustion supporting.
Chinese patent grant bulletin number: CN205261617U, authorized bulletin day 2016, 05 and 25, discloses a secondary air blower structure of a boiler, comprising an air collecting port, a box body, a secondary air blower and an air supply pipe, wherein the air collecting port is arranged above the box body, the secondary air blower is arranged in the box body, one end of the air supply pipe is connected with the secondary air blower, and the other end of the air supply pipe is connected to the outside of the box body; the inside of the box body is provided with a silencer, and the silencer comprises at least two layers of silencing plates made of silencing materials. The disadvantage of the above patent is that the air inlet end and the air outlet end of the secondary air blower are not designed with sealing structures when being connected with the pipeline, and when the air blower works, a great amount of air leakage loss is caused by thermal expansion difference generated between the connecting pipeline and the air inlet and outlet ports due to different wall temperatures.
In view of the foregoing, there is a need for a low resistance combustion-promoting secondary air turbine structure that improves the sealing between the connecting duct and the air inlet and outlet ports.
Disclosure of Invention
The invention provides a low-resistance combustion-promoting secondary air blower structure capable of improving the sealing performance between a connecting pipeline and an air inlet and outlet port, and aims to overcome the defect that a large amount of air leakage loss is caused by thermal expansion difference generated between the connecting pipeline and the air inlet and outlet port due to different wall temperatures when the air blower works in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a low resistance promotes burning secondary fan structure, includes the casing, the internally mounted of casing has the rotor subassembly, be equipped with inlet port and outlet port on the casing, sealing device is all installed to inlet port and outlet port department, sealing device includes the inflation cover, the guide ring is all installed at the both ends of inflation cover, and two inflation covers are installed respectively on inlet port and outlet port through the guide ring.
One ends of the two expansion sleeves are respectively arranged on the air inlet port and the air outlet port through guide rings, and the other ends of the two expansion sleeves are respectively connected with the air inlet pipeline and the air outlet pipeline through guide rings. The expansion sleeve has large axial flexibility and easy deformation, can compensate the installation error between the ports and the pipeline through the design of the expansion sleeve between the pipelines and the ports, and can also compensate the thermal expansion difference between the ports and the pipeline caused by different wall temperatures, thereby reducing the axial load of the ports and the pipeline, avoiding the temperature difference stress between the ports and the pipeline, avoiding the strength damage, the instability damage and the pipeline pull-out damage, and improving the tightness between the connecting pipeline and the air inlet and outlet ports.
Preferably, the expansion sleeve comprises an outer sleeve and an inner sleeve, wherein a port of the inner sleeve is arranged on the inner side wall of the guide ring, an annular mounting groove matched with the port of the outer sleeve is formed in the guide ring, the port of the outer sleeve is arranged in the annular mounting groove of the guide ring, and the outer sleeve is arranged on the outer side of the inner sleeve. The inner sleeve and the outer sleeve are fixed with the guide ring through threaded connection, so that the structure is simple, and the processing is convenient. Through the design of the inner sleeve and the outer sleeve, the structural strength of the expansion sleeve is improved, and good sealing effect and compensation effect are ensured.
Preferably, the inner sleeve is made of silica gel cloth, and the outer sleeve is made of stainless steel wire cloth. The inner sleeve is made of industrial 2mm silica gel cloth, has the advantages of high temperature resistance, ageing resistance, good elasticity and flexibility, and can solve the problem of connection damage of good thermal expansion and cold contraction to the pipeline and the port. The jacket is made of stainless steel wire cloth with the size of 20 meshes/in, so that the structural strength of the expansion jacket is improved, and good elasticity and flexibility of the expansion jacket are ensured.
Preferably, the housing comprises a volute, an air inlet box is arranged on the side face of the volute, the inside of the volute is communicated with the inside of the air inlet box, the rotor assembly comprises a main shaft, one end of the main shaft penetrates through the side wall of the air inlet box and is in sealing rotation connection with the side wall of the air inlet box, the other end of the main shaft penetrates through the side wall of the volute and is in sealing rotation connection with the side wall of the volute, an impeller is mounted on the main shaft, and the impeller is located inside the volute. The fan shell comprises spiral case and inlet box, is the steel sheet welding of material Q235 and forms, and the casing side all has the reinforcing band steel, has guaranteed not taking place great deformation in transportation, installation and operation in-process. The main shaft is a whole forging shaft and has enough rigidity and strength. The side surface of the volute is provided with an observation door, so that the working condition inside the fan can be observed conveniently; the bottom of spiral case is provided with the ash removal door, and the inlet box bottom is provided with the drain, conveniently carries out clean work to the casing inside.
Preferably, the air inlet port is located on the surface of the air inlet box, and the air outlet port is located on the surface of the volute. The invention relates to a rotary fan with reverse inlet of 90 degrees and outlet of 90 degrees, wherein an impeller is a reverse rotation impeller, and gas is sucked into an air inlet box through an air inlet port under the action of the impeller and is discharged through an air outlet port on a volute.
Preferably, two sides of the shell are provided with shell through holes matched with two ends of the main shaft, the end part of the main shaft penetrates through the shell through holes and is arranged on the outer side of the shell, an annular sealing block is arranged on the surface of the shell and at the position of the shell through holes, the annular sealing block is sleeved on the outer side of the main shaft, an annular sealing groove is arranged on the inner side wall of the annular sealing block, and a sealing ring which is in contact with the main shaft is arranged in the annular sealing groove. The annular sealing blocks (sealing rings) are arranged at the positions, extending out of the through holes of the shell, of the main shaft to seal, so that good air tightness of the shell is guaranteed, and air leakage loss of the shell is reduced.
Preferably, the outer side wall of the annular sealing block is fixedly provided with an outward flange, the surface of the shell is provided with an L-shaped pressing plate, the L-shaped pressing plate is annularly distributed around the annular sealing block, the end part of one side edge of the L-shaped pressing plate is fixed on the surface of the shell, the outward flange is arranged between the surface of the shell and the other side edge of the L-shaped pressing plate, the other side edge of the L-shaped pressing plate is provided with a side edge through hole, the surface of the shell is also fixedly provided with a stud matched with the side edge through hole, the stud is arranged in the side edge through hole and movably connected with the side edge through hole, the stud is connected with a fastening nut in a threaded manner, and the fastening nut and the outward flange are respectively positioned on two sides of the other side edge of the L-shaped pressing plate. The L-shaped pressing plate has certain deformability, when the annular sealing block is fixed, the other side edge of the L-shaped pressing plate can be driven to bend by screwing the fastening nut on the stud, and then the outward flange on the annular sealing block is pressed on the surface of the shell to be fixed, so that the purpose of fixing the annular sealing block is achieved, the structure is simple, the installation and the disassembly are convenient, and the fixing effect is good. And an asbestos plate is further arranged between the surfaces of the annular sealing block and the shell, and is sleeved on the outer side of the main shaft, so that the pressure between the annular sealing block and the shell is reduced, and the annular sealing block and the shell are protected.
Preferably, bearing seats matched with two ends of the main shaft are fixed on two sides of the shell, the end part of the main shaft penetrates through the shell through hole to be installed on the bearing seat and is connected with the bearing seat in a sealing and rotating mode, one end of the main shaft is installed in one bearing seat, the other end of the main shaft penetrates through the other bearing seat, a bearing seat cavity is formed in the bearing seat, a bearing body is arranged in the bearing seat cavity, the bearing body is sleeved on the main shaft, and a horizontal vibration measuring point, a vertical vibration measuring point, a cooling water inlet, a cooling water outlet and a temperature measuring hole are respectively formed in the side wall of the bearing seat cavity. The other end of the main shaft penetrates through the other bearing seat and then is connected with the variable frequency motor through the coupler and the liquid couple in sequence, and the variable frequency motor drives the main shaft to work. The bearing body adopts antifriction bearing, and work precision is high. Through the design of the cooling water inlet and the cooling water outlet, cooling water can be introduced into the bearing seat cavity to play a role in cooling the bearing body; through the design of the temperature measuring hole, a worker can use a temperature measuring element (platinum thermal resistor) to extend into the temperature measuring hole to measure the temperature of the bearing seat, and the operation is simple and the detection is convenient; through the design of horizontal vibration measuring point and vertical vibration measuring point, the staff can use the vibration measuring probe to carry out the vibration detection in the bearing frame horizontal direction and the vertical direction to know the operating condition of bearing frame.
Preferably, an adjusting box sleeve is further arranged between the air inlet port and the corresponding expansion sleeve, one end of the adjusting box sleeve is arranged at the air inlet port, the expansion sleeve at the air inlet port is arranged at the other end of the adjusting box sleeve through a guide ring, a plurality of rotating shafts are rotatably connected in the adjusting box sleeve, the rotating shafts are parallel to each other and are located on the same horizontal plane, guide blades are fixed on the rotating shafts, the lengths of the guide blades are matched with the inner side width of the adjusting box sleeve, the sum of the widths of all the guide blades is matched with the inner side length of the adjusting box sleeve, and a rotating control device connected with the rotating shafts is arranged on the adjusting box sleeve. The rotary control device can control the rotating shaft to rotate, so that the guide blades on the rotating shaft are driven to overturn, the opening and closing of the air inlet port are realized, the air quantity, the pressure and the temperature are controlled, and the effect of isolating the medium flow is achieved.
Preferably, the side wall of the end portion through adjusting box sleeve of pivot is arranged in the outside of adjusting box sleeve, be equipped with the linkage handle on the end of pivot, rotation control device includes the linkage board, the one end and the pivot fixed connection of linkage handle, the other end and the linkage board of linkage handle are articulated, and an epaxial tip of a pivot is fixed with initiative handle and pointer, initiative handle and linkage handle all are located the one end of pivot, the pointer is located the other end of pivot, be equipped with on the lateral wall of adjusting box sleeve with the position assorted dial of pointer. The driving handle can be controlled manually or by an external electric actuator. During operation, the driving handle drives the corresponding rotating shaft and the guide blades on the corresponding rotating shaft to rotate, and at the moment, under the transmission action of the linkage handle and the linkage plate, the guide blades on other rotating shafts can be driven to synchronously rotate, so that the purposes of adjusting air quantity, pressure and temperature are achieved. In the rotating process of the rotating shaft, the pointer on the rotating shaft also rotates along with the rotating shaft, and the pointer and the dial are designed to play a role in indication, so that a worker can directly know the adjusting state of the air inlet port.
The beneficial effects of the invention are as follows: by the design of the expansion sleeve between the pipelines, the installation error between the pipelines can be compensated, the thermal expansion difference between the pipelines due to different wall temperatures can be compensated, and the axial loads of the pipelines can be reduced, so that the temperature difference stress between the pipelines and the pipelines is reduced, the damage caused by strength, instability and pull-off damage of the pipelines are avoided, and the tightness between the connecting pipeline and the air inlet and outlet ports is improved; the annular sealing blocks are arranged at the positions of the main shaft extending out of the through holes of the shell to seal, so that good air tightness of the shell is ensured, and air leakage loss of the shell is reduced; the main shaft is an integral forging shaft, is connected with the variable frequency motor through the coupler and the liquid couple, is driven by the variable frequency motor to work, and has enough rigidity and strength; the bearing body adopts a rolling bearing, so that the working precision is high; the fan shell consists of a volute and an air inlet box, is formed by welding steel plates made of a material Q235, and is provided with reinforced flat steel on the side surface, so that the fan shell is ensured not to be deformed greatly in the transportation, installation and operation processes; the structure is simple, and the processing is convenient; the structural strength of the expansion sleeve is improved, and good sealing effect and compensation effect are ensured; the inner sleeve has the advantages of high temperature resistance, ageing resistance, good elasticity and flexibility, and can solve the problem of connection damage of good expansion with heat and contraction with cold to the pipeline and the port; the jacket improves the structural strength of the expansion sleeve on one hand, and ensures good elasticity and flexibility of the expansion sleeve on the other hand; the structure is simple, the installation and the disassembly are convenient, and the fixing effect is good; the pressure between the annular sealing block and the shell is reduced, and the annular sealing block and the shell are protected; the air quantity, pressure and temperature are controlled, and the medium flow is isolated; the operator can directly understand the adjustment state at the intake port.
Drawings
FIG. 1 is a schematic view of a construction of the present invention;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
FIG. 3 is a top view of the sealing device;
FIG. 4 is a cross-sectional view at B-B in FIG. 3;
fig. 5 is an enlarged view at C in fig. 4;
FIG. 6 is an assembly view of the annular seal block and housing;
FIG. 7 is a front view of the bearing housing;
FIG. 8 is a right side view of the bearing housing;
FIG. 9 is a front view of the adjustment case;
FIG. 10 is a top view of the adjustment housing;
fig. 11 is a rear view of the adjustment case.
In the figure: 1. the device comprises a shell, 2, an air inlet, 3, an air outlet, 4, a sealing device, 5, an expansion sleeve, 6, a guide ring, 7, an outer sleeve, 8, an inner sleeve, 9, an annular mounting groove, 10, a spiral case, 11, an air inlet box, 12, a main shaft, 13, an impeller, 14, a shell through hole, 15, an annular sealing block, 16, an annular sealing groove, 17, a sealing ring, 18, an outward flange, 19, an L-shaped pressing plate, 20, a side through hole, the hydraulic pressure type hydraulic pressure control device comprises the following components of a hydraulic pressure control system, namely a hydraulic pressure control system, wherein the hydraulic pressure control system comprises a hydraulic pressure control system, a hydraulic pressure control system and a hydraulic pressure control system.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
In the embodiment shown in fig. 1 and fig. 2, a low-resistance combustion-promoting secondary air blower structure comprises a housing 1, a rotor assembly is installed in the housing 1, an air inlet port 2 and an air outlet port 3 are arranged on the housing 1, sealing devices 4 are installed at the positions of the air inlet port 2 and the air outlet port 3, as shown in fig. 3 and fig. 4, the sealing devices 4 comprise expansion sleeves 5, guide rings 6 are installed at two ends of the expansion sleeves 5, and the two expansion sleeves 5 are installed on the air inlet port 2 and the air outlet port 3 through the guide rings 6 respectively.
As shown in fig. 5, the expansion sleeve 5 comprises an outer sleeve 7 and an inner sleeve 8, the port of the inner sleeve 8 is arranged on the inner side wall of the guide ring 6, an annular mounting groove 9 matched with the port of the outer sleeve 7 is arranged on the guide ring 6, the port of the outer sleeve 7 is arranged in the annular mounting groove 9 of the guide ring 6, and the outer sleeve 7 is arranged on the outer side of the inner sleeve 8.
The inner sleeve 8 is made of silica gel cloth, and the outer sleeve 7 is made of stainless steel wire cloth.
As shown in fig. 1 and 2, the housing 1 includes a volute 10, an air inlet box 11 is disposed on a side surface of the volute 10, an interior of the volute 10 is communicated with an interior of the air inlet box 11, the rotor assembly includes a main shaft 12, one end of the main shaft 12 penetrates through a side wall of the air inlet box 11 and is in sealing rotation connection with the same, the other end of the main shaft 12 penetrates through a side wall of the volute 10 and is in sealing rotation connection with the same, an impeller 13 is mounted on the main shaft 12, and the impeller 13 is located in the volute 10.
The inlet port 2 is located on the surface of the inlet box 11 and the outlet port 3 is located on the surface of the volute 10.
As shown in fig. 1 and 6, two sides of the casing 1 are provided with casing through holes 14 matched with two ends of the main shaft 12, the end part of the main shaft 12 passes through the casing through holes 14 and is arranged on the outer side of the casing 1, an annular sealing block 15 is arranged on the surface of the casing 1 and at the position of the casing through holes 14, the annular sealing block 15 is sheathed on the outer side of the main shaft 12, an annular sealing groove 16 is arranged on the inner side wall of the annular sealing block 15, and a sealing ring 17 contacted with the main shaft 12 is arranged in the annular sealing groove 16.
The outer side wall of the annular sealing block 15 is fixedly provided with a flanging 18, the surface of the shell 1 is provided with an L-shaped pressing plate 19, the L-shaped pressing plate 19 is annularly distributed around the annular sealing block 15, the end part of one side edge of the L-shaped pressing plate 19 is fixed on the surface of the shell 1, the flanging 18 is arranged between the surface of the shell 1 and the other side edge of the L-shaped pressing plate 19, the other side edge of the L-shaped pressing plate 19 is provided with a side edge through hole 20, the surface of the shell 1 is also fixedly provided with a stud 21 matched with the side edge through hole 20, the stud 21 is arranged in the side edge through hole 20 and is movably connected with the side edge through hole, a fastening nut 22 is connected to the stud 21 in a threaded manner, and the fastening nut 22 and the flanging 18 are respectively positioned on two sides of the other side edge of the L-shaped pressing plate 19.
As shown in fig. 1, 7 and 8, bearing seats 23 matched with two ends of a main shaft 12 are fixed on two sides of a shell 1, the end of the main shaft 12 passes through a shell through hole 14 to be installed on the bearing seats 23 and is in sealing rotation connection with the same, one end of the main shaft 12 is installed in one bearing seat 23, the other end of the main shaft 12 passes through the other bearing seat 23, a bearing seat cavity 24 is arranged in the bearing seat 23, a bearing body 25 is arranged in the bearing seat cavity 24, the bearing body 25 is sleeved on the main shaft 12, and a horizontal vibration measuring point 26, a vertical vibration measuring point 27, a cooling water inlet 28, a cooling water outlet 29 and a temperature measuring hole 30 are respectively arranged on the side wall of the bearing seat cavity 24.
As shown in fig. 1, 9, 10 and 11, an adjusting box sleeve 31 is further arranged between the air inlet port 2 and the corresponding expansion sleeve 5, one end of the adjusting box sleeve 31 is installed at the air inlet port 2, the expansion sleeve 5 at the air inlet port 2 is installed at the other end of the adjusting box sleeve 31 through a guide ring 6, a plurality of rotating shafts 32 are rotatably connected in the adjusting box sleeve 31, the rotating shafts 32 are parallel to each other and are positioned on the same horizontal plane, guide blades 33 are fixed on the rotating shafts 32, the length of each guide blade 33 is matched with the inner width of the adjusting box sleeve 31, the sum of the widths of all the guide blades 33 is matched with the inner length of the adjusting box sleeve 31, and a rotation control device connected with the rotating shafts 32 is arranged on the adjusting box sleeve 31.
The tip of pivot 32 link up the outside of adjusting box cover 31 is arranged in to the lateral wall of adjusting box cover 31, be equipped with linkage handle 34 on the tip of pivot 32, rotation control device includes linkage board 35, linkage handle 34's one end and pivot 32 fixed connection, linkage handle 34's the other end is articulated with linkage board 35, the tip on one pivot 32 is fixed with initiative handle 36 and pointer 37, initiative handle 36 and linkage handle 34 all are located the one end of pivot 32, pointer 37 is located the other end of pivot 32, be equipped with on the lateral wall of adjusting box cover 31 with pointer 37's the position assorted scale 38.
The invention relates to a rotary fan with a reverse inlet of 90 degrees and a reverse outlet of 90 degrees, and an impeller 13 is a reverse rotation impeller. The main shaft 12 is an integral forging shaft, is fixed by a rolling bearing, has enough rigidity and strength, and is connected with a variable frequency motor by a coupler and a fluid coupling, and the variable frequency motor drives the main shaft 12 to work.
The casing 1 comprises spiral case 10 and inlet box 11, all is the steel sheet welding of material Q235 and forms, and casing 1 side all has the reinforcing band steel, has guaranteed not taking place great deformation in transportation, installation and operation in-process.
By the design of the expansion sleeve 5 between the pipeline and the port, the installation error between the port and the pipeline can be compensated, the thermal expansion difference between the port and the pipeline caused by different wall temperatures can be compensated, and the axial loads of the port and the pipeline can be reduced, so that the temperature difference stress between the port and the pipeline is reduced, the strength damage, the instability damage and the pipeline pull-out damage are avoided, and the tightness between the connecting pipeline and the air inlet and outlet ports is improved.
The main shaft 12 extends out of the through hole 14 of the shell and is provided with an annular sealing block 15 (a sealing ring 17) for sealing, so that good air tightness of the shell 1 is ensured, and air leakage loss of the shell 1 is reduced.
When the variable frequency motor works, the variable frequency motor drives the main shaft 12 and the impeller 13 on the main shaft to rotate, so that air is sucked into the air inlet box 11 through the air inlet port 2 and is discharged through the air outlet port 3 on the volute 10. When the air quantity needs to be regulated, the driving handle 36 drives the corresponding rotating shaft 32 and the guide vanes 33 on the corresponding rotating shaft to rotate (the driving handle 36 can be controlled manually or by an external electric actuator), and at the moment, under the transmission action of the linkage handle 34 and the linkage plate 35, the guide vanes 33 on other rotating shafts 32 can be driven to synchronously rotate, so that the purpose of regulating the air quantity is realized. During the rotation of the rotating shaft 32, the pointer 37 on the rotating shaft 32 also rotates along with the rotating shaft 32, and the pointer 37 and the dial 38 play a role in indication through the design of the pointer 37, so that a worker can directly know the working state of the air inlet port 2.
Claims (8)
1. The utility model provides a low resistance promotes burning secondary fan structure, its characterized in that includes casing (1), the internally mounted of casing (1) has rotor subassembly, be equipped with air inlet port (2) and air outlet port (3) on casing (1), sealing device (4) are all installed in air inlet port (2) and air outlet port (3) department, sealing device (4) are including inflation cover (5), guide ring (6) are all installed at the both ends of inflation cover (5), and two inflation covers (5) are installed respectively on air inlet port (2) and air outlet port (3) through guide ring (6), still be equipped with adjustment case cover (31) between air inlet port (2) and the inflation cover (5) that correspond thereof, the one end of adjustment case cover (31) is installed in air inlet port (2), the inflation cover (5) of air inlet port (2) department are installed at the other end of adjustment case cover (31) through guide ring (6), the inside rotation of adjustment case cover (31) is connected with root (32), the inside rotation of blade (32) and the same horizontal plane (33) are located on the fixed length of rotation axis (33) and the same rotation axis (33), the sum of the width of all guide vanes (33) is matched with the inner side length of an adjusting box sleeve (31), a rotary control device connected with a rotating shaft (32) is arranged on the adjusting box sleeve (31), the end part of the rotating shaft (32) penetrates through the side wall of the adjusting box sleeve (31) and is arranged outside the adjusting box sleeve (31), a linkage handle (34) is arranged on the end part of the rotating shaft (32), the rotary control device comprises a linkage plate (35), one end of the linkage handle (34) is fixedly connected with the rotating shaft (32), the other end of the linkage handle (34) is hinged with the linkage plate (35), a driving handle (36) and a pointer (37) are fixed at the end part of one rotating shaft (32), the driving handle (36) and the linkage handle (34) are both located at one end of the rotating shaft (32), the pointer (37) is located at the other end of the rotating shaft (32), and a dial (38) matched with the position of the pointer (37) is arranged on the outer side wall of the adjusting box sleeve (31).
2. The low-resistance combustion-promoting secondary air fan structure according to claim 1, wherein the expansion sleeve (5) comprises an outer sleeve (7) and an inner sleeve (8), a port of the inner sleeve (8) is arranged on the inner side wall of the guide ring (6), an annular mounting groove (9) matched with a port of the outer sleeve (7) is arranged on the guide ring (6), a port of the outer sleeve (7) is arranged in the annular mounting groove (9) of the guide ring (6), and the outer sleeve (7) is arranged on the outer side of the inner sleeve (8).
3. The low-resistance combustion-promoting secondary air blower structure according to claim 2, wherein the inner sleeve (8) is made of silica gel cloth, and the outer sleeve (7) is made of stainless steel wire cloth.
4. The low-resistance combustion-promoting secondary air fan structure according to claim 1, wherein the housing (1) comprises a volute (10), an air inlet box (11) is arranged on the side face of the volute (10), the interior of the volute (10) is communicated with the interior of the air inlet box (11), the rotor assembly comprises a main shaft (12), one end of the main shaft (12) penetrates through the side wall of the air inlet box (11) and is in sealing rotation connection with the side wall of the volute (10), the other end of the main shaft (12) penetrates through the side wall of the volute (10) and is in sealing rotation connection with the side wall of the volute, an impeller (13) is mounted on the main shaft (12), and the impeller (13) is located in the volute (10).
5. A low resistance combustion promoting secondary fan structure according to claim 4, characterized in that the inlet port (2) is located at the surface of the inlet box (11) and the outlet port (3) is located at the surface of the volute (10).
6. The low-resistance combustion-promoting secondary air fan structure according to claim 4, wherein two sides of the shell (1) are provided with shell through holes (14) matched with two ends of the main shaft (12), the end part of the main shaft (12) penetrates through the shell through holes (14) to be placed on the outer side of the shell (1), an annular sealing block (15) is installed on the surface of the shell (1) and located at the shell through holes (14), the annular sealing block (15) is sleeved on the outer side of the main shaft (12), an annular sealing groove (16) is formed in the inner side wall of the annular sealing block (15), and a sealing ring (17) in contact with the main shaft (12) is installed in the annular sealing groove (16).
7. The low-resistance combustion-promoting secondary air blower structure according to claim 6, characterized in that an outward flange (18) is fixed on the outer side wall of the annular sealing block (15), an L-shaped pressing plate (19) is arranged on the surface of the housing (1), the L-shaped pressing plate (19) is annularly distributed around the annular sealing block (15), the end part of one side edge of the L-shaped pressing plate (19) is fixed on the surface of the housing (1), the outward flange (18) is installed between the surface of the housing (1) and the other side edge of the L-shaped pressing plate (19), a side edge through hole (20) is formed in the other side edge of the L-shaped pressing plate (19), a stud (21) matched with the side edge through hole (20) is further fixed on the surface of the housing (1), the stud (21) is arranged in the side edge through hole (20) and is movably connected with the stud (21), a fastening nut (22) is connected to the stud (21) in a threaded manner, and the fastening nut (22) and the outward flange (18) are respectively located on two sides of the other side edge of the L-shaped pressing plate (19).
8. The low-resistance combustion-promoting secondary air fan structure according to claim 4, wherein bearing seats (23) matched with two ends of a main shaft (12) are fixed on two sides of the shell (1), the end portion of the main shaft (12) penetrates through the shell through hole (14) to be installed on the bearing seats (23) and is in sealing rotation connection with the same, one end of the main shaft (12) is installed in one bearing seat (23), the other end of the main shaft (12) penetrates through the other bearing seat (23), a bearing seat cavity (24) is formed in the bearing seat (23), a bearing body (25) is arranged in the bearing seat cavity (24), the bearing body (25) is sleeved on the main shaft (12), and a horizontal vibration measuring point (26), a vertical vibration measuring point (27), a cooling water inlet (28), a cooling water outlet (29) and a temperature measuring hole (30) are respectively formed in the side wall of the bearing seat cavity (24).
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| CN114593076A (en) | 2022-06-07 |
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