CN110219826B - Integrated shaft seal for mine water pump - Google Patents
Integrated shaft seal for mine water pump Download PDFInfo
- Publication number
- CN110219826B CN110219826B CN201910474231.9A CN201910474231A CN110219826B CN 110219826 B CN110219826 B CN 110219826B CN 201910474231 A CN201910474231 A CN 201910474231A CN 110219826 B CN110219826 B CN 110219826B
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- Prior art keywords
- sealing
- end cover
- shaft
- shaft seal
- cavity
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 159
- 238000005065 mining Methods 0.000 claims abstract description 23
- 239000010687 lubricating oil Substances 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000001050 lubricating effect Effects 0.000 claims description 20
- 229920002396 Polyurea Polymers 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid 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
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid 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
- F04D29/106—Shaft sealings especially adapted for liquid pumps
- F04D29/108—Shaft sealings especially adapted for liquid pumps the sealing fluid being other than the working liquid or being the working liquid treated
-
- 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
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a container type shaft seal of a mining water pump, and particularly relates to the technical field of shaft seals, which comprises a shaft, wherein a sealing block is movably sleeved outside one end of the shaft, a shaft seal end cover is movably sleeved outside the other end of the shaft, one side of the sealing block and one side of the shaft seal end cover are respectively provided with a perforation in a penetrating way, the shaft is matched with the perforation, and a multistage sealing mechanism is arranged between the sealing block and the shaft seal end cover; the multistage sealing mechanism comprises a sealing cavity. According to the utility model, the first sealing ring and the second sealing ring, the first O-shaped ring and the second O-shaped ring and the lubricating oil is filled in the cavity formed between the plugboard of the shaft seal end cover and the sealing cavity to form three-stage sealing, so that the component has a multi-stage sealing structure, the sealing performance of gas in the water pump and during normal operation is fully ensured, the service life of the mining water pump can be greatly prolonged, and meanwhile, the heavy work of replacing the traditional shaft seal can be avoided.
Description
Technical Field
The utility model relates to the technical field of shaft seals, in particular to a cartridge type shaft seal of a mining water pump.
Background
At present, the sealing mode of the water pump adopts traditional mechanical sealing (packing sealing), but the sealing mode is not easy to uniformly press and flatten, and the leakage amount of the water pump is large, thereby affecting the working efficiency of the water pump, and being frequently replaced and inconvenient to operate. Because a large amount of coal dust or other mineral dust particles are used in the mine water, the sealing abrasion of the mine water pump is quick, the service life is short, and the replacement workload is large.
The utility model patent of patent application publication number CN 204099265U discloses a pressure-stabilizing type integrated mechanical shaft seal assembly of a centrifugal pump, which comprises a mechanical seal shaft sleeve, a rotating shaft, a movable ring, a stationary ring, a spring seat and a mechanical seal gland, wherein a pump body seal cavity is formed between the mechanical seal gland and the mechanical seal shaft sleeve, between the spring seat and the rotating shaft, and a plurality of nozzles are arranged on the spring seat, so that a pressure-stabilizing cavity is formed among the nozzles, the spring seat and the mechanical seal gland. After the external flushing liquid is stabilized in the stabilizing cavity, the nozzles uniformly distributed on the spring seat are uniformly flushed on the end surfaces of the movable ring and the static ring, so that a cleaning liquid area higher than the pressure of the sealing cavity of the pump body is formed around the movable ring and the static ring, and coke powder and coal powder in a conveyed medium are effectively separated from the movable ring and the static ring, thereby achieving the purpose of prolonging the service life of the mechanical shaft seal.
However, in practical use, the sealing device still has more defects, such as a single-stage shaft seal in the form of a cartridge type shaft seal, poor sealing effect and complicated replacement process.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the utility model provides a cartridge type shaft seal of a mining water pump, which is characterized in that a first sealing ring and a second sealing ring are utilized to seal the part at one stage, the first O-shaped ring and the second O-shaped ring are utilized to seal the part at the second stage, and meanwhile, lubricating oil is filled into a cavity formed between a plugboard of a shaft seal end cover and a sealing cavity to form a three-stage sealing, so that the part has a multi-stage sealing structure, the sealing performance of gas in the water pump and during normal operation is fully ensured, the service life of the mining water pump can be greatly prolonged, and meanwhile, the heavy work of replacing the traditional shaft seal can be avoided, so that the problems in the background technology are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the integrated shaft seal of the mining water pump comprises a shaft, wherein a sealing block is movably sleeved outside one end of the shaft, a shaft seal end cover is movably sleeved outside the other end of the shaft, one side of the sealing block and one side of the shaft seal end cover are respectively provided with a through hole in a penetrating manner, the shaft is matched with the through holes, and a multistage sealing mechanism is arranged between the sealing block and the shaft seal end cover;
the multistage sealing mechanism comprises a sealing cavity, the sealing cavity is arranged at the center position of one side of a sealing block facing to a shaft seal end cover, the shaft seal end cover comprises a cover plate and a plugboard, lubricating oil is filled in the cavity formed between the plugboard of the shaft seal end cover and the sealing cavity, a groove is formed in the plugboard facing to one end face of the sealing block, a positioning retaining sleeve is arranged in the groove in a matched mode, the positioning retaining sleeve is sleeved outside a shaft, a first annular groove is formed in the circumferential side inner wall of the positioning retaining sleeve, a first O-shaped ring is arranged in the first annular groove in a matched mode, a second annular groove is formed in the sealing block facing to the inner edge position of one end of the shaft seal end cover, a second O-shaped ring is arranged on the outer side of a joint of the cover plate and the plugboard of the shaft seal end cover, a first sealing ring and a second sealing ring are respectively and fixedly arranged on the inner side walls of perforations in the center position of the sealing block and the shaft seal end cover, and the oil filling holes are respectively communicated with the sealing cavity, and sealing is arranged outside the oil filling holes in a matched mode.
In a preferred embodiment, the insertion plate is arranged on one side of the cover plate facing the sealing block, and the insertion plate and the sealing block are arranged as an integrated structure, the insertion plate is completely inserted into the sealing cavity, and one side of the cover plate facing the sealing block is attached to the end face of the sealing block.
In a preferred embodiment, the insert plate circumferential side inner wall is further provided with a cavity, the inside of which is provided with a baffle ring and a lubricating block, and the number of the baffle ring and the lubricating block is plural.
In a preferred embodiment, a plurality of baffle rings and lubricating blocks are alternately arranged, the baffle rings are arranged between two adjacent lubricating blocks, and the lubricating blocks at two ends inside the cavity are attached to the inner side walls of the cavity at corresponding positions.
In a preferred embodiment, a locking hole is formed in the middle of one side, facing the shaft seal end cover, of the sealing block, a through hole is formed in the position, corresponding to the locking hole, of the cover plate of the shaft seal end cover in a penetrating mode, the locking hole is equal to the through hole in diameter, a locking bolt is arranged on one side, far away from the sealing block, of the shaft seal end cover, and one end of the locking bolt is sequentially inserted into the through hole and the locking hole.
In a preferred embodiment, the locking bolt is externally provided with external threads, the through hole and the locking hole are internally provided with internal threads, and the locking bolt is in threaded connection with the shaft seal end cover and the sealing block.
In a preferred embodiment, the sealing block and the shaft seal end cover are in interference fit with the shaft outer wall at corresponding positions through the first sealing ring and the second sealing ring respectively.
In a preferred embodiment, the sealing block, the shaft seal end cover and the positioning baffle sleeve are all made of polyurea material, and polytetrafluoroethylene accounting for 5% of the total weight of the polyurea raw material and graphite accounting for 5% of the total weight of the polyurea raw material are added.
In a preferred embodiment, the lubricant block is a graphite member.
In a preferred embodiment, the first sealing ring, the second sealing ring, the first O-ring and the second O-ring are all made of silica gel.
The utility model has the technical effects and advantages that:
1. according to the utility model, the first sealing ring and the second sealing ring are utilized to seal the part at one stage, the first O-shaped ring and the second O-shaped ring are utilized to seal the part at the second stage, and meanwhile, the lubricating oil is filled into the cavity formed between the plugboard of the shaft seal end cover and the sealing cavity to form three-stage sealing, so that the part has a multi-stage sealing structure, the sealing performance of gas in the water pump and during normal operation is fully ensured, the service life of the mining water pump can be greatly prolonged, and the heavy work of replacing the traditional shaft seal can be avoided;
2. according to the utility model, the sealing block, the shaft seal end cover and the positioning retaining sleeve are all made of polyurea material members, and polytetrafluoroethylene accounting for 5% of the total raw material and graphite accounting for 5% of the total raw material are added into the polyurea raw material, so that the polyurea has self-lubricating performance, the wear resistance and corrosion resistance of the shaft seal are increased in geometric grade, and the service life of a unit component on the shaft seal is prolonged.
Drawings
Fig. 1 is an overall cross-sectional view of the present utility model.
FIG. 2 is a schematic view of the overall structure of the shaft seal end cap of the present utility model.
Fig. 3 is a side view of a seal block of the present utility model.
Fig. 4 is an overall schematic view of the sealing block of the present utility model.
Fig. 5 is an enlarged view of portion a of fig. 1 in accordance with the present utility model.
Fig. 6 is an enlarged view of portion B of fig. 1 in accordance with the present utility model.
Fig. 7 is an overall schematic view of the locking bolt of the present utility model.
The reference numerals are: the sealing device comprises a shaft 1, a sealing block 2, a shaft seal end cover 3, a sealing cavity 4, a positioning retaining sleeve 5, a first annular groove 6, a first O-shaped ring 7, a cavity 8, a retaining ring 9, a lubricating block 10, a groove 11, a second annular groove 12, a second O-shaped ring 13, a locking hole 14, a through hole 15, a locking bolt 16, a first sealing ring 17 and a second sealing ring 18.
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 integrated shaft seal of the mining water pump provided by the embodiment of the utility model can comprise a shaft 1, a sealing block 2 is movably sleeved outside one end of the shaft 1, a shaft seal end cover 3 is movably sleeved outside the other end of the shaft 1, one side of the sealing block 2 and one side of the shaft seal end cover 3 are respectively provided with a through hole in a penetrating manner, the shaft 1 is matched with the through holes, and a multi-stage sealing mechanism is arranged between the sealing block 2 and the shaft seal end cover 3.
Referring to the accompanying drawings of the specification 1-6, the multistage sealing mechanism of the cartridge type shaft seal of the mining water pump comprises a sealing cavity 4, the sealing cavity 4 is arranged at the center position of one side of a sealing block 2 facing a shaft seal end cover 3, the shaft seal end cover 3 comprises a cover plate and a plugboard, lubricating oil is filled in a cavity formed between the plugboard of the shaft seal end cover 3 and the sealing cavity 4, a groove 11 is formed in the end face of one end of the plugboard facing the sealing block 2, a positioning retaining sleeve 5 is arranged in the groove 11 in a matched mode, the positioning retaining sleeve 5 is sleeved outside the shaft 1, a first annular groove 6 is formed in the inner wall of the circumferential side of the positioning retaining sleeve 5, a first O-shaped ring 7 is arranged in the inner side of the first annular groove 6 in a matched mode, a second annular groove 12 is formed in the edge position of one end inner side of the sealing block 2 facing the shaft seal end cover 3, a second O-shaped ring 13 is arranged on the outer side of a joint of the cover plate and the plugboard of the shaft seal end cover 3, the second O-shaped ring 13 is matched with the second annular groove 12, a first oil hole 17 and a second oil hole 18 are fixedly arranged on the inner side wall of the center position of the sealing block 2 and the shaft seal 3 respectively, a sealing plug 2 is arranged on the inner side of the center position of the sealing block and the sealing block is communicated with the sealing plug 4, and the sealing surface is communicated with the sealing cavity 4.
Further, the plugboard is arranged on one side of the cover plate facing the sealing block 2 and is of an integrated structure, the plugboard is completely inserted into the sealing cavity 4, and one side of the cover plate facing the sealing block 2 is attached to the end face of the sealing block 2.
Further, the sealing block 2 and the shaft seal end cover 3 are in an interference fit state with the outer wall of the shaft 1 at the corresponding position through the first sealing ring 17 and the second sealing ring 18 respectively.
Further, the first seal ring 17, the second seal ring 18, the first O-ring 7 and the second O-ring 13 are all made of silica gel.
The implementation scene is specifically as follows: when in actual use, the second O-shaped ring 13 is sleeved outside the joint of the cover plate and the plugboard on the shaft seal end cover 3, then the positioning baffle sleeve 5 is arranged in the groove 11 at the end part of the plugboard, the first O-shaped ring 7 is arranged in the first annular groove 6 of the circumferential side inner wall of the positioning baffle sleeve 5 in a matched mode, then the plugboard on the shaft seal end cover 3 is inserted into the sealing cavity 4 on the sealing block 2, the sealing block 2 is tightly attached to the second annular groove 12 formed at the edge position of the inner side of one end of the shaft seal end cover 3, after the sealing block 2 and the shaft seal end cover 3 are assembled, the assembled assembly can be sleeved on the shaft 1, and lubricating oil is filled into the cavity formed between the plugboard of the shaft seal end cover 3 and the sealing cavity 4 through the oil filling hole on the sealing block 2, so that the positioning baffle sleeve 5 is tightly pressed in the groove 11 at the end part of the plugboard, the sealing block is subjected to primary sealing by utilizing the first sealing ring 17 and the second sealing ring 18, the primary sealing is utilized, the primary sealing and the secondary sealing of the water pump is further realized by utilizing the first O-shaped ring 7 and the second O-shaped ring 13, the primary sealing ring 13, the heavy sealing performance is also ensured, and the heavy sealing performance of the conventional sealing structure can be realized, and the primary sealing performance of the sealing cavity can be fully realized, and the sealing cavity can be fully formed, and the sealing performance of the sealing cavity is also can be fully realized, and the sealing cavity can be formed.
Referring to fig. 1 of the specification, a cavity 8 is further formed in the inner wall of the plug board circumferential side of the cartridge type shaft seal of the mining water pump in the embodiment, a baffle ring 9 and a lubricating block 10 are arranged in the cavity 8, and a plurality of baffle rings and lubricating blocks are arranged in number.
Further, a plurality of baffle rings 9 and lubricating blocks 10 are alternately arranged, the baffle rings 9 are arranged between two adjacent lubricating blocks 10, and the lubricating blocks 10 at two ends inside the cavity 8 are respectively attached to the inner side walls of the cavity 8 at the corresponding positions.
Further, the lubricating block 10 is a graphite member.
The implementation scene is specifically as follows: before the positioning retaining sleeve 5 is assembled, a plurality of graphite-material lubricating blocks 10 and retaining rings 9 can be assembled in the cavity 8 of the inner wall of the circumferential side of the inserting plate in turn, and the lubricating blocks 10 at two ends inside the cavity 8 are attached to the inner side wall of the cavity 8 at the corresponding position, so that the resistance suffered in the process of sleeving the assembled assembly of the sealing block 2 and the shaft seal end cover 3 on the shaft 1 can be greatly reduced, and the tightness of the component can be further improved.
Referring to fig. 1 and 7 of the specification, a locking hole 14 is formed in the middle of one side of a sealing block 2 of a cartridge type shaft seal of the mining water pump, which faces a shaft seal end cover 3, a through hole 15 is formed in the position, corresponding to the locking hole 14, of a cover plate of the shaft seal end cover 3, the diameter of the locking hole 14 is equal to that of the through hole 15, a locking bolt 16 is arranged on one side, far away from the sealing block 2, of the shaft seal end cover 3, and one end of the locking bolt 16 is sequentially inserted into the through hole 15 and the locking hole 14.
Further, the locking bolt 16 is externally provided with external threads, the through hole 15 and the locking hole 14 are internally provided with internal threads, and the locking bolt 16 is in threaded connection with the shaft seal end cover 3 and the sealing block 2.
The implementation scene is specifically as follows: in the process of assembling the seal block 2 and the seal end cover 3, after the inserting plate on the seal end cover 3 is inserted into the seal cavity 4 on the seal block 2, the through holes 15 on the cover plate of the seal end cover 3 are in one-to-one correspondence with the locking holes 14 on the end face of the seal block 2, and the assembled seal end cover 3 and the seal block 2 are fixed through the locking screw 16, so that the separation between the seal end cover 3 and the seal block 2 in the use process is avoided, and the normal use of the component is affected.
The sealing block 2, the shaft seal end cover 3 and the positioning retaining sleeve 5 of the integrated shaft seal of the mining water pump are all made of polyurea materials, and polytetrafluoroethylene accounting for 5% of the total weight of the polyurea materials and graphite accounting for 5% of the total weight of the materials are added into the polyurea materials.
The implementation scene is specifically as follows: when in actual use, the sealing block 2, the shaft seal end cover 3 and the positioning retaining sleeve 5 are all made of polyurea, and polytetrafluoroethylene accounting for 5% of the total raw material and graphite accounting for 5% of the total raw material are added into the polyurea raw material, so that the polyurea has self-lubricating performance, the wear resistance and corrosion resistance of the shaft seal are increased in geometric level, and the service life of a unit assembly on the shaft seal is prolonged.
To sum up: according to the utility model, the first sealing ring 17 and the second sealing ring 18 are utilized to seal the part, the first O-shaped ring 7 and the second O-shaped ring 13 are utilized to seal the part secondarily, meanwhile, lubricating oil is filled into the cavity formed between the plugboard of the shaft seal end cover 3 and the sealing cavity 4 to form three-stage sealing, so that the part has a multi-stage sealing structure, the sealing performance of gas in the water pump and during normal operation is fully ensured, the service life of the mining water pump can be greatly prolonged, the heavy work of replacing the traditional shaft seal can be avoided, in addition, the sealing block 2, the shaft seal end cover 3 and the positioning baffle sleeve 5 are all made of polyurea materials, polytetrafluoroethylene accounting for 5% of the total weight of the materials and graphite accounting for 5% of the total weight of the materials are added into the polyurea materials, so that the polyurea has self-lubricating performance, the wear resistance and corrosion resistance of the shaft seal are increased by geometric grade, and the service life of unit components on the shaft seal is prolonged.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The utility model provides a collection dress formula bearing seal of mining water pump, includes axle (1), its characterized in that: the sealing device is characterized in that a sealing block (2) is movably sleeved outside one end of the shaft (1), a shaft seal end cover (3) is movably sleeved outside the other end of the shaft (1), one side of the sealing block (2) and one side of the shaft seal end cover (3) are respectively provided with a through hole in a penetrating mode, the shaft (1) is matched with the through holes, and a multistage sealing mechanism is arranged between the sealing block (2) and the shaft seal end cover (3);
the multistage sealing mechanism comprises a sealing cavity (4), the sealing cavity (4) is arranged at the center position of one side of a sealing block (2) facing a shaft seal end cover (3), the shaft seal end cover (3) comprises a cover plate and an inserting plate, lubricating oil is filled in the cavity formed between the inserting plate of the shaft seal end cover (3) and the sealing cavity (4), a groove (11) is arranged on the end face of the inserting plate facing the sealing block (2), a positioning retaining sleeve (5) is arranged in the groove (11), the positioning retaining sleeve (5) is sleeved outside the shaft (1), a first annular groove (6) is arranged on the inner wall of the circumferential side of the positioning retaining sleeve (5), a first O-shaped ring (7) is arranged in the first annular groove (6), a second annular groove (12) is formed in the inner edge position of one end of the sealing block (2) facing the shaft seal end cover (3), a second O-shaped ring (13) is arranged on the outer side of the joint of the cover plate of the shaft seal end cover (3), the second O-shaped ring (13) is matched with the second annular groove (12), an oil hole (17) is formed in the inner side of the sealing block (3), the sealing cavity (2) is communicated with the sealing cavity (18) and the inner side of the sealing block (2), and a sealing rubber plug is arranged outside the oil filling hole in a matching way.
2. The cartridge seal for a mining water pump of claim 1, wherein: the picture peg sets up in the apron one side towards sealing block (2), and both set up to integral type structure, the picture peg inserts completely in sealed chamber (4), and the apron one side towards sealing block (2) and sealing block (2) terminal surface laminating.
3. The cartridge seal for a mining water pump of claim 1, wherein: the inner wall of the peripheral side of the plugboard is also provided with a cavity (8), a baffle ring (9) and a lubricating block (10) are arranged in the cavity (8), and a plurality of baffle rings and lubricating blocks are arranged in the cavity.
4. A cartridge seal for a mining water pump according to claim 3, wherein: the baffle rings (9) and the lubricating blocks (10) are alternately arranged, the baffle rings (9) are arranged between two adjacent lubricating blocks (10), and the lubricating blocks (10) at two ends inside the cavity (8) are attached to the inner side walls of the cavity (8) at the corresponding positions.
5. The cartridge seal for a mining water pump of claim 1, wherein: the sealing block (2) is provided with locking hole (14) towards one side middle part of bearing seal end cover (3), the apron of bearing seal end cover (3) corresponds the position department of locking hole (14) and runs through and be equipped with through-hole (15), the diameter of locking hole (14) and through-hole (15) equals, one side that bearing seal end cover (3) kept away from sealing block (2) is provided with locking bolt (16), locking bolt (16) one end inserts to inside through-hole (15) and locking hole (14) in proper order.
6. The cartridge seal for a mining water pump of claim 5, wherein: the locking bolt (16) is externally provided with external threads, internal threads are arranged in the through hole (15) and the locking hole (14), and the locking bolt (16) is in threaded connection with the shaft seal end cover (3) and the sealing block (2).
7. The cartridge seal for a mining water pump of claim 1, wherein: the sealing block (2) and the shaft seal end cover (3) are in interference fit with the outer wall of the shaft (1) at the corresponding position through a first sealing ring (17) and a second sealing ring (18) respectively.
8. The cartridge seal for a mining water pump of claim 1, wherein: the sealing block (2), the shaft seal end cover (3) and the positioning retaining sleeve (5) are all made of polyurea material, and polytetrafluoroethylene accounting for 5% of the total raw material and graphite accounting for 5% of the total raw material are added into the polyurea raw material.
9. A cartridge seal for a mining water pump according to claim 3, wherein: the lubricating block (10) is a graphite material member.
10. The cartridge seal for a mining water pump of claim 1, wherein: the first sealing ring (17), the second sealing ring (18), the first O-shaped ring (7) and the second O-shaped ring (13) are all made of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474231.9A CN110219826B (en) | 2019-05-23 | 2019-05-23 | Integrated shaft seal for mine water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474231.9A CN110219826B (en) | 2019-05-23 | 2019-05-23 | Integrated shaft seal for mine water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110219826A CN110219826A (en) | 2019-09-10 |
| CN110219826B true CN110219826B (en) | 2024-03-19 |
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ID=67819343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910474231.9A Active CN110219826B (en) | 2019-05-23 | 2019-05-23 | Integrated shaft seal for mine water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219826B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN102192328A (en) * | 2010-03-12 | 2011-09-21 | 祥景精机股份有限公司 | Container-type shaft seal |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110219826A (en) | 2019-09-10 |
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