CN115030906A - Non-oriented silicon steel annealing furnace fan - Google Patents

Non-oriented silicon steel annealing furnace fan Download PDF

Info

Publication number
CN115030906A
CN115030906A CN202210739206.0A CN202210739206A CN115030906A CN 115030906 A CN115030906 A CN 115030906A CN 202210739206 A CN202210739206 A CN 202210739206A CN 115030906 A CN115030906 A CN 115030906A
Authority
CN
China
Prior art keywords
main shaft
silicon steel
annealing furnace
oriented silicon
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210739206.0A
Other languages
Chinese (zh)
Inventor
李明娟
陆建军
龚洋洁
马小莉
于玲丽
仇永成
吴新春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jintongling Technology Group Co ltd
Jiangsu Jintongling Blower Co ltd
Original Assignee
Jintongling Technology Group Co ltd
Jiangsu Jintongling Blower Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jintongling Technology Group Co ltd, Jiangsu Jintongling Blower Co ltd filed Critical Jintongling Technology Group Co ltd
Priority to CN202210739206.0A priority Critical patent/CN115030906A/en
Publication of CN115030906A publication Critical patent/CN115030906A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • 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
    • F04D29/053—Shafts
    • 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
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/122—Shaft sealings using sealing-rings 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • 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
    • F04D29/626—Mounting or removal of fans
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a fan of a non-oriented silicon steel annealing furnace, which relates to the technical field of fluid machinery and comprises a machine shell and a split type pedestal, wherein an air inlet is formed in one side of the machine shell, which is far away from the pedestal, a rear cover body is arranged on the other side of the machine shell, and an air outlet is formed in the periphery of the machine shell; the split type pedestal is connected with a bearing box and is rotationally connected with a main shaft through the bearing box, the main shaft is driven to rotate through a motor, one end of the main shaft penetrates through the rear cover body, and the main shaft penetrates through the rear cover body and is then connected to an impeller in the shell; and a sealing element is arranged between the rear cover body and the main shaft. The structure is reasonable, the large-flow combustible and explosive gas can be safely conveyed, and the effect of improving the installation and maintenance efficiency is achieved while the requirement of no leakage is met by the back-pumping structure.

Description

Non-oriented silicon steel annealing furnace fan
Technical Field
The invention relates to the technical field of fluid machinery, in particular to a fan of a non-oriented silicon steel annealing furnace.
Background
The high-speed motor material-high-grade non-oriented silicon steel which is a core component of products such as hydrogen fuel new energy automobiles, load-carrying unmanned aerial vehicles and the like is a key basic material for converting electric energy into kinetic energy through a high-speed motor, the efficiency and the service life of energy conversion are directly influenced by low loss and high endurance performance of the high-speed motor material, and the high-speed motor material is quite complex in process and extremely strict in manufacturing technology due to high technical threshold in the material processing process and is known as a 'handicraft article' in steel products, so that the high-speed motor material is monopolized by strong foreign industries for a long time all the time, and the export of the fields of military industry and high-end new energy industry in China is limited.
The explosive development of the Chinese new energy industry and the hard requirement of carbon neutralization of carbon peak-to-peak have great demand potential in the field of industrial energy conservation, and the recovery of global economy and special manufacturing industry after epidemic greatly increases the demand on non-oriented silicon steel; the annealing process in the structure optimization production line of the non-oriented silicon steel product is a key process section for converting silicon steel from alpha-oriented structure to gamma-oriented structure for recrystallization to a non-oriented framework, and the precision of indexes such as gas components, temperature, flow, pressure and the like in an annealing furnace directly influences the quality of the product, so that a non-oriented silicon steel annealing furnace fan is urgently needed to meet the process requirements such as high hydrogen (74% max), high temperature (350 ℃ max), explosion prevention, oil free, no leakage and the like.
Disclosure of Invention
The invention aims to provide a fan of a non-oriented silicon steel annealing furnace, which is reasonable in structure, can safely convey large-flow combustible and explosive gas, and improves the installation and maintenance efficiency while meeting the requirement of no leakage by virtue of a back-pumping structure.
The technical purpose of the invention is realized by the following technical scheme:
a fan of a non-oriented silicon steel annealing furnace comprises a machine shell and a split type pedestal, wherein an air inlet is formed in one side of the machine shell, which is far away from the pedestal, a rear cover body is arranged on the other side of the machine shell, and an air outlet is formed in the periphery of the machine shell;
the split type pedestal is connected with a bearing box and is rotationally connected with a main shaft through the bearing box, the main shaft is driven to rotate through a motor, one end of the main shaft penetrates through the rear cover body, and the main shaft penetrates through the rear cover body and is then connected to an impeller in the shell; and a sealing element is arranged between the rear cover body and the main shaft.
Still further, the seal includes a labyrinth seal section and an air seal section.
Still further, the labyrinth seal section includes a plurality of teeth spaced around an inner periphery thereof.
Furthermore, the air sealing section comprises a sealing body sleeved outside the spindle, a second sealing cavity and a plurality of carbon rings are arranged on the inner periphery of the sealing body, the carbon rings are arranged on two sides of the second sealing cavity, the spacing sleeve is arranged on the outer periphery of the spindle, and the second sealing cavity is communicated with the inflation inlet outwards.
Furthermore, a first sealing cavity is formed between the sealing body and the inner ring of the end face of the labyrinth sealing section at an interval, and the first sealing cavity is also communicated with the inflating port.
Furthermore, the spindle comprises a stainless steel sleeve sleeved on the periphery of the spindle, and a carbon ring is sleeved outside the stainless steel sleeve.
Furthermore, a variable working condition deformation guide device is arranged between the shell and the split type pedestal.
Furthermore, become operating mode deformation guider include the backup pad of being connected with the back lid, the U type cell body of being connected with the pedestal, the backup pad is vertical and length direction is on a parallel with the main shaft, U type cell body opening side is towards the backup pad, and its both sides limit is located the backup pad both sides, and U type cell body both sides limit is connected with the guide screw of butt in the backup pad corresponding side.
Furthermore, a heat dissipation wheel positioned between the sealing element and the bearing box is connected outside the main shaft.
Furthermore, the impeller comprises a plurality of blades, and the inlet and the outlet of each blade are of smooth arc structures.
In conclusion, the invention has the following beneficial effects:
the invention has reasonable structure, excellent sealing performance of the whole machine and good thermal deformation control effect, can safely convey large-flow inflammable and explosive gas, effectively ensures that hydrogen does not leak, prevents external air from entering a fan, and really achieves the aim of explosion-proof safe operation; the process requirements of high hydrogen (74% max), high temperature (350 ℃ max), explosion prevention, oil free, no leakage and variable working conditions (H24% -74%, 222 ℃ to 350 ℃) are met.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic side view of the structure of FIG. 1;
FIG. 3 is a schematic view of the structure of the direction D (i.e., the variable deformation guide device) in FIG. 1;
FIG. 4 is a schematic view of the seal portion construction;
FIG. 5 is a schematic view of the structure of a blade portion of an impeller.
In the figure, 1, an air inlet; 2. a housing; 3. an impeller; 4. a rear cover body, 5, a sealing element; 6. a heat dissipation wheel; 7. a variable working condition deformation guide device; 8. a split type pedestal; 9. a main shaft; 10. a bearing housing; 11. a flat plate; 12. a support plate; 13. a first guide screw; 14. a second guide screw; 15. a U-shaped groove body; 16. labyrinth sealing; 17. connecting a reinforcing ring; 18. an O-shaped ring; 19. a seal body; 20. sealing the loop; 21. a second sealed chamber; 22. a carbocyclic ring; 23. packing; 24. a stainless steel sleeve; 25. a first sealed chamber; 26. a blade.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the invention.
A non-oriented silicon steel annealing furnace fan is shown in figures 1 and 2 and comprises a base, wherein a casing 2 and a split type pedestal 8 are fixedly connected to the base, the casing 2 is of an integral type and effectively avoids leakage caused by casing deformation, two sides of the casing 2 are integrally connected with connecting flange surfaces, one side far away from the pedestal is connected with an air inlet 1 through the connecting flange surface on the side, and the other side is connected with a rear cover body 4 through the connecting flange surface on the side and a bolt;
the periphery of the casing 2 is integrally connected with an air outlet arranged along the tangential direction, the air outlet is vertically arranged upwards, a sealing gasket can be filled between the air inlet 1, the rear cover body 4 and the front side and rear side connecting flanges of the casing 2, and the sealing gasket can be a flexible graphite gasket or other hydrogen-resistant and high-temperature-resistant materials.
As shown in fig. 1, the split pedestal 8 is connected with two split bearing boxes 10 coaxially arranged, and the main shaft 9 is connected through the rotation of the bearings in the front and rear bearing boxes, one end of the main shaft 9, which is far away from the casing 2, is rotated through the driving of the motor installed on the split pedestal 8, the split pedestal 8 is fixed with two dust covers, one cover is arranged at the connecting position or the coupling position between the motor and the main shaft 9, and the other cover is arranged outside the main shaft 9 between the two bearing boxes 10.
As shown in fig. 1, one end of the main shaft 9 close to the casing 2 penetrates through the rear cover body 4 and is connected to the impeller 3 in the casing 2 after penetrating through the rear cover body 4, the impeller 3 and the main shaft 9 can be connected through a flat key, the flat key connection can transmit torque and realize radial fixation of the impeller 3, and meanwhile, an end socket locking nut on the main shaft 9 is used for axially fixing the impeller 3;
be equipped with sealing member 5 between back lid 4 and the main shaft 9 and seal, sealing member 5 is pressure self-balancing sealing device to improve sealed effect, main shaft 9 outer joint has the heat dissipation wheel 6 that is located between sealing member 5 and the bearing box 10, dispels the heat to sealing member 5 and casing 2 direction with the drive when main shaft 9 rotates.
As shown in fig. 3, a variable working condition deformation guide device 7 is arranged between the casing 2 and the split type pedestal 8, the variable working condition deformation guide device 7 includes a flat plate 11 connected with the rear cover 4, a supporting plate 12 integrally and vertically connected to the flat plate 11, and a U-shaped groove 15 connected with the pedestal, the supporting plate 12 is vertically arranged and has a length direction parallel to the main shaft (the supporting plate 12 is axially arranged), the opening side of the U-shaped groove 15 is horizontal and faces the supporting plate 12, two side edges of the U-shaped groove are located at two sides of the supporting plate 12, and two side edges of the U-shaped groove 15 are respectively connected with a first guide screw 13 and a second guide screw 14 which are abutted against corresponding sides of the supporting plate 12 (in this embodiment, the guide screws are fixed by connecting nuts respectively located at two sides of the U-shaped groove 15);
during high-temperature thermal expansion, the shell axially deforms towards the air inlet along the variable working condition deformation guide device 7, so that the deformation of the shell in the circumferential direction is avoided, the air inlet and the impeller are prevented from generating friction sparks, the explosion-proof safety operation purpose is achieved, and the service life of the bearing is also prolonged.
As shown in fig. 4, the sealing element 5 comprises a connection reinforcing ring 17, a labyrinth seal 16 section and a nitrogen seal section, the connection reinforcing ring 17 is welded on the inner periphery of the rear cover body 4, the labyrinth seal 16 section is fixed on the inner side of the connection reinforcing ring 17 through screws, the nitrogen seal section is fixed on the outer side of the connection reinforcing ring 17 through screws, a sealing groove is also formed in the position, opposite to the connection reinforcing ring 17, of the inner side of the labyrinth seal 16 section, and an O-shaped ring 18 is arranged in the sealing groove for sealing with the connection reinforcing ring 17;
the labyrinth seal 16 section is made of copper and comprises a plurality of teeth which are uniformly arranged at intervals on the inner circumference, in the embodiment, the labyrinth seal is sealed on the outer circumference of the cam at the end part of the impeller 3 through the seal of the inner circumference and can also be sealed on the outer circumference of the main shaft 9;
in the embodiment, the pressure self-balancing sealing device adopts a labyrinth and carbon ring 22 sealing mode and is provided with nitrogen sealing; the nitrogen sealing section comprises a sealing body 19 sleeved outside the main shaft 9, a second sealing cavity 21 and a plurality of carbon rings 22 are arranged on the inner periphery of the sealing body 19,
the second sealed chamber 21 is a closed chamber and is disposed in the middle of the sealed body 19, the carbon rings 22 are disposed on two sides of the second sealed chamber 21 and are sleeved on the periphery of the main shaft 9 at intervals (in this embodiment, the second sealed chamber 21 is sequentially provided with two carbon rings 22 with uniform intervals in the inward direction, and the carbon rings 22 and the packing 23 are sequentially disposed in the outward direction for sealing), and the second sealed chamber 21 is communicated with the nitrogen inflation inlet.
As shown in fig. 4, a first seal cavity 25 (pressure stabilizing cavity) is further spaced between the seal body 19 and the inner ring of the end face of the labyrinth seal 16, the first seal cavity 25 is also communicated with a nitrogen gas charging port, in this embodiment, the nitrogen gas charging port is located at the periphery of the seal body 19 and is communicated with a seal loop 20 inwards, and the seal loop 20 is communicated with the first seal cavity 25 and the second seal cavity 21 at the same time;
when the fan operates, nitrogen with certain pressure is filled in the fan, a loop is formed by the inflation inlet, the first sealing cavity 25, the second sealing cavity 21 and the sealing loop 20 to achieve the pressure self-balancing effect, and the combined sealing forms form the pressure self-balancing sealing device of the non-oriented silicon steel annealing furnace fan.
As shown in fig. 4, the main shaft 9 includes a stainless steel sleeve 24 whose periphery is fixedly sleeved by interference fit, in this embodiment, the carbon ring 22 is sleeved outside the stainless steel sleeve 24; after the spindle 9 rusts, the carbon ring 22 is prevented from contacting the spindle 9 to generate large abrasion, so that the service life of the carbon ring 22 is prolonged.
As shown in fig. 5, the fan is in a variable working condition, the medium temperature is 350-222 ℃, the hydrogen content at 350 ℃ is 24%, and the hydrogen content at 222 ℃ is 74%; in the embodiment, the impeller 3 is made of a hydrogen-resistant high-temperature material, so that the phenomena of hydrogen embrittlement and hydrogen cracking are prevented; the impeller 3 comprises a plurality of blades 26, and the inlet and the outlet of each blade 26 adopt a smooth circular arc structure so as to avoid welding defects and stress concentration.
The installation and maintenance of the whole fan adopt a back-drawing type, the components arranged on the main shaft 9 and the split type pedestal 8 realize the whole back-drawing type, and the efficiency is provided for the installation and maintenance while the leakage is not really realized.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.

Claims (10)

1. A non-oriented silicon steel annealing furnace fan is characterized in that: the air conditioner comprises a shell and a split type pedestal, wherein an air inlet is formed in one side of the shell, which is far away from the pedestal, a rear cover body is arranged on the other side of the shell, and an air outlet is formed in the periphery of the shell;
the split type pedestal is connected with a bearing box and is rotationally connected with a main shaft through the bearing box, the main shaft is driven to rotate through a motor, one end of the main shaft penetrates through the rear cover body, and the main shaft penetrates through the rear cover body and is then connected to an impeller in the shell; and a sealing element is arranged between the rear cover body and the main shaft.
2. The non-oriented silicon steel annealing furnace fan of claim 1, wherein: the seal includes a labyrinth seal section and a gas seal section.
3. The non-oriented silicon steel annealing furnace fan of claim 2, wherein: the labyrinth seal section includes a plurality of teeth that the inner periphery set up at interval.
4. The non-oriented silicon steel annealing furnace fan according to claim 2 or 3, wherein: the air sealing section comprises a sealing body sleeved outside the main shaft, a second sealing cavity and a plurality of carbon rings are arranged on the inner periphery of the sealing body, the carbon rings are arranged on two sides of the second sealing cavity, the outer periphery of the main shaft is sleeved with spacing sleeves, and the second sealing cavity is communicated with the inflation inlet outwards.
5. The non-oriented silicon steel annealing furnace fan of claim 4, wherein: a first sealing cavity is further formed between the sealing body and the inner ring of the end face of the labyrinth sealing section at an interval, and the first sealing cavity is also communicated with the inflating port.
6. The non-oriented silicon steel annealing furnace fan according to claim 4, wherein: the spindle comprises a stainless steel sleeve sleeved on the periphery of the spindle, and a carbon ring is sleeved outside the stainless steel sleeve.
7. The non-oriented silicon steel annealing furnace fan of claim 1, wherein: a variable working condition deformation guide device is arranged between the shell and the split type pedestal.
8. The non-oriented silicon steel annealing furnace fan of claim 7, wherein: become operating mode deformation guider includes the backup pad of being connected with the back lid, the U type cell body of being connected with the pedestal, and the backup pad is vertical and length direction is on a parallel with the main shaft, and U type cell body opening side is towards the backup pad, and its both sides limit is located the backup pad both sides, and U type cell body both sides limit is connected with the butt in the guide screw of backup pad corresponding side.
9. The non-oriented silicon steel annealing furnace fan of claim 1, wherein: and a heat dissipation wheel positioned between the sealing element and the bearing box is connected outside the main shaft.
10. The non-oriented silicon steel annealing furnace fan of claim 1, wherein: the impeller comprises a plurality of blades, and the inlet and the outlet of each blade are of smooth arc structures.
CN202210739206.0A 2022-06-28 2022-06-28 Non-oriented silicon steel annealing furnace fan Pending CN115030906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210739206.0A CN115030906A (en) 2022-06-28 2022-06-28 Non-oriented silicon steel annealing furnace fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210739206.0A CN115030906A (en) 2022-06-28 2022-06-28 Non-oriented silicon steel annealing furnace fan

Publications (1)

Publication Number Publication Date
CN115030906A true CN115030906A (en) 2022-09-09

Family

ID=83126426

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210739206.0A Pending CN115030906A (en) 2022-06-28 2022-06-28 Non-oriented silicon steel annealing furnace fan

Country Status (1)

Country Link
CN (1) CN115030906A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2750130Y (en) * 2004-08-19 2006-01-04 四川日机密封件有限公司 Combined type gas sealing apparatus
CN101532502A (en) * 2009-04-27 2009-09-16 江苏金通灵风机股份有限公司 Post-treatment waste gas recycling high-temperature blower
CN102364117A (en) * 2010-12-15 2012-02-29 南通大通宝富风机有限公司 Combined shaft end seal
CN203939999U (en) * 2014-07-10 2014-11-12 杨广华 The multistage dry gas sealing device of charge gas compressor
CN214578853U (en) * 2021-02-23 2021-11-02 成都中科技机泵有限公司 Combined sealing structure of compressor main shaft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2750130Y (en) * 2004-08-19 2006-01-04 四川日机密封件有限公司 Combined type gas sealing apparatus
CN101532502A (en) * 2009-04-27 2009-09-16 江苏金通灵风机股份有限公司 Post-treatment waste gas recycling high-temperature blower
CN102364117A (en) * 2010-12-15 2012-02-29 南通大通宝富风机有限公司 Combined shaft end seal
CN203939999U (en) * 2014-07-10 2014-11-12 杨广华 The multistage dry gas sealing device of charge gas compressor
CN214578853U (en) * 2021-02-23 2021-11-02 成都中科技机泵有限公司 Combined sealing structure of compressor main shaft

Similar Documents

Publication Publication Date Title
CN206175258U (en) Carry poisonous or easy explosion gas's accident special blower
CN115030906A (en) Non-oriented silicon steel annealing furnace fan
US9863426B2 (en) Seal of a compressor rotor
CN206539521U (en) A kind of gas centrifugal blower fan with anti-explosion stator structure
CN113137478A (en) Zero-leakage combined shaft seal device for high-temperature and high-dust working condition
CN203175932U (en) Petrochemical engineering process pump
CN209815173U (en) Novel feeder
WO2023092804A1 (en) Electric motor capable of realizing bearing protection
CN210829405U (en) Steam turbine shaft end steam seal structure
CN219366363U (en) Corrosion-resistant centrifugal fan
CN211874827U (en) Prevent centrifugal fan of high temperature usage that leaks
CN218522839U (en) Sealing device for gas fan
CN101865155A (en) Heat resistant centrifugal fan
CN211975886U (en) Zero-leakage combined shaft seal device for high-temperature and high-dust working condition
CN203114664U (en) Magnetic transmission non-leakage centrifugal fan
CN104791291A (en) Carbon ring sealed centrifugal fan
US4343478A (en) Face seal assembly for rotating drum
CN220522872U (en) High temperature fan leak protection wind sealing device
CN213870425U (en) Horizontal water pump shaft sleeve sealing structure
CN112780585A (en) Explosion-proof centrifugal ventilator and explosion-proof method thereof
CN218509741U (en) Anticorrosive fan rotor
CN217002335U (en) Combined sealing structure and centrifugal fan
CN108980349B (en) Composite seal for centrifugal fan
CN114576183B (en) Explosion-proof multistage centrifugal fan in explosion zero region
CN216768351U (en) Split type high pressure positive blower carbon ring mechanical seal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination