CN105864096A - Singe-stage double-suction split case pump with good sealing performance - Google Patents
Singe-stage double-suction split case pump with good sealing performance Download PDFInfo
- Publication number
- CN105864096A CN105864096A CN201610328145.3A CN201610328145A CN105864096A CN 105864096 A CN105864096 A CN 105864096A CN 201610328145 A CN201610328145 A CN 201610328145A CN 105864096 A CN105864096 A CN 105864096A
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- Prior art keywords
- pump
- impeller
- ring
- stage double
- interstage sleeve
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- 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 relates to the field of split case pumps, in particular to a single-stage double-suction split case pump with the good sealing performance. The single-stage double-suction split case pump comprises a front bearing seat, a rear bearing seat and a pump shaft penetrating the front bearing seat and the rear bearing seat. The pump shaft is sleeved with a shaft sleeve. The middle portion of the pump shaft is sleeved with an impeller and a pump body matched with the impeller. The pump body is connected with the front bearing seat and the rear bearing seat through fastening pieces. A sealing component is arranged between the pump body and the impeller. Pump covers are arranged on the two sides of the pump body. The pump covers on the two sides are matched with a padding sealing device and a mechanical sealing device correspondingly. The invention aims at providing the single-stage double-suction split case pump with the good sealing performance, through the specific padding sealing device and the impeller sealing component, the good sealing effect is achieved, meanwhile the bearing span can be lowered, an impeller sealing ring is prevented from falling off, and normal operation of the pump is guaranteed.
Description
Technical field
The present invention relates to middle-opening pump field, a kind of single-stage double-suction middle-opening pump with good seal performance.
Background technology
Middle-opening pump is a kind of a kind of Hydraulic Elements that low-pressure medium is changed into high-pressure medium, accordingly, it would be desirable to good sealing, and the sealing of the pump housing is the important component part that middle-opening pump seals.
Existing middle-opening pump common procurement S, SH type Split pump structure, owing to middle-opening pump hydraulic model is special, current are intake impeller from impeller both sides while, thus suction chamber is wider, result in bearing span relatively big, when bearing span is bigger, the radial force that the when of pump operation, impeller produces can act on axle, forming a amount of deflection the biggest, bearing span is the biggest, and amount of deflection is the biggest；Axle is because after deflection deformation, easily producing mechanical fatigue；Bearing as the amount of deflection that produces of axle and be in an improper stress, so bearing easily generates heat, bearing life shortens, and even produces the serious product quality problem such as off-axis.
Simultaneously, in traditional design, the mode that location mode is junction of the edges of two sheets of paper screw fastened of impeller ring, junction of the edges of two sheets of paper screw hole needs to join one hole of work on the gap that impeller and impeller ring coordinate, due to impeller and impeller ring material difference, there is operation easier definitely in this boring；After junction of the edges of two sheets of paper screw fastened, due to pressure differential and the effect of centrifugal force of impeller ring both sides in pump operation, easily make junction of the edges of two sheets of paper toner screw, thus cause impeller ring abjection and damage water pump.
Summary of the invention
It is an object of the invention to provide a kind of single-stage double-suction middle-opening pump with good seal performance, by specific stuffing seal and impeller sealing component, it is achieved good sealing effectiveness, bearing span can be reduced simultaneously, prevent impeller ring from coming off, it is ensured that pump properly functioning.
nullIn order to realize object above，The technical solution used in the present invention is: a kind of single-stage double-suction middle-opening pump with good seal performance，It includes front axle bearing (2)、Rear axle bearing (11) and run through their pump shaft (10)，It is arranged with axle sleeve (21) on described pump shaft (10)，The middle part of described pump shaft (10) is socketed with impeller (43) and the pump housing (3) coordinated with impeller (43)，And the pump housing (3) is connected with front axle bearing (2) and rear axle bearing (11) by securing member (1)，It is provided with seal member (7) between the described pump housing (3) and impeller (43)，The both sides of the described pump housing (3) are provided with pump cover (22)，Pump cover (22) place of both sides is combined with stuffing seal (4) and mechanically-sealing apparatus (9) respectively，Described stuffing seal (4) includes being socketed with the filler interstage sleeve (23) docked with pump cover (22) on axle sleeve (21)，Described filler interstage sleeve (23) connects the gland (24) coordinated with it，And between gland (24) and filler interstage sleeve (23), form annular seal space，Packing ring (30) and filler (31) it is provided with in described annular seal space，Flushing hole (2301) docking offered on described packing ring (30) and filler interstage sleeve (23)，The outside of described filler interstage sleeve (23) is provided with the water flowing case (28) connected with flushing hole (2301)，And water flowing case (28) connects with flush pipe (27)；Described seal member (7) includes that the impeller ring (42) that impeller (43) outside is sheathed, described impeller ring (42) and impeller (43) are locked by the lock-screw (44) being radially arranged；The outside of described impeller ring (42) is provided with casing ring (41), and described casing ring (41) is arranged on the pump housing (3).
Further, described stuffing seal (4) and mechanically-sealing apparatus (9) are coordinated with pump cover (22) and impeller by seal gusset (12), and seal gusset (12) is that 1.5-3mm is concordant with pump cover (22) seam limit with the side that impeller inlet limit coordinates with the gap of pump cover (22).
Further, described gland (24) and filler interstage sleeve (23) are connected by locking screw mandrel (25) and locking nut (26), and offer on filler interstage sleeve (23) with many with 3 with lock the screwed holes that screw mandrel (25) coordinates.
Further, described filler interstage sleeve (23) offers uniformly no less than 3 flushing holes (2301).
Further, described filler (31) is graphite circle, and the outside of packing ring (30) is provided with 3 graphite circles, and inner side is provided with a graphite circle.
Further, the end face that described gland (24) penetrates filler interstage sleeve (23) internal is inclined-plane；Described filler interstage sleeve (23) is inclined-plane near the medial surface of the pump housing (3).
Further, it is provided with sealing gasket (29) between the position that described filler interstage sleeve (23) contacts with the pump housing (3)；Described filler interstage sleeve (23) is stainless steel material.
Further, described impeller ring (42) and impeller (43) are interference fit, and described impeller ring (42) and casing ring (41) are matched in clearance.
Further, described casing ring (41) in axial direction offers detection hole (4101).
Further, described lock-screw (44) includes main body (4401), is provided with one layer of rubber layer (4402) with impeller ring (42) outside the position that main body (4401) coordinates.
Further, being provided with stopper slot (4403) inside the flange position of described lock-screw (44), described stopper slot (4403) spacing ring (4301) that arrange upper with impeller (43) coordinates.
Further, it is provided with outside the flange of described lock-screw (44) and tightens block (4404).
The invention have the benefit that
1, the filler interstage sleeve of one tubular is set, and a water flowing case communicated therewith is set outside filler interstage sleeve, it is connected with washing pipe by water flowing case, makes the position of annular seal space closer to impeller, bearing span is made to reduce, it is ensured that the amount of deflection of axle is a scope safely.
2, impeller and impeller ring are locked by the clamping screw by being radially arranged, and will not occur loosening because of wheel rotation, can be effectively prevented impeller ring and come off, it is ensured that water pump safely and smoothly runs, and assemble simple；Can not be limited by the impeller of special substance simultaneously.
3, seal is made to widen increasing at the gusset on seal on the basis of original, with the gap of pump cover at 1.5-3mm, concordant with pump cover seam limit with the side that impeller inlet limit coordinates, improve the anti-cavitation performance of single-stage double-suction middle-opening pump.
4, locking screw mandrel and locking nut is used gland and filler interstage sleeve to be fixed, convenient dismounting, and quantity is no less than three groups, therefore can improve the efficiency of locking greatly.
5, filler uses graphite circle, the distribution pattern of three outside packing ring, it is ensured that flushing water can return to the suction chamber of water pump in time, reduces leakage rate.
6, the design of sealing gasket, further increases the effect of sealing.
7, impeller ring and impeller use interference fit, can improve sealing effectiveness, impeller ring and casing ring and use matched in clearance, can reduce abrasion.
8, detect the design in hole, the gap between casing ring and impeller ring can be observed, and then realize preferably coordinating effect is installed.
9, the design of rubber layer, can make impeller ring and clamping screw coordinate more tight, prevent impeller ring from coming off further.
10, spacing ring and the cooperation of stopper slot, further enhance the locking effect of lock-screw, prevents screw from moving, and does not interferes with the installation of screw.
11, turn the design of block, greatly facilitate tightening of lock-screw, improve efficiency of assembling.
Accompanying drawing explanation
Fig. 1 is a kind of single-stage double-suction middle-opening pump structure schematic diagram with good seal performance.
Fig. 2 is the partial enlarged drawing of A in Fig. 1.
Fig. 3 is the structural representation of filler block.
Fig. 4 is the structural representation of seal member.
Fig. 5 is the partial enlarged drawing of B in Fig. 4.
Fig. 6 is the structural representation of clamping screw.
Shown in figure, label character is expressed as: 1, securing member；2, front axle bearing；3, the pump housing；4, stuffing seal；7, seal member；8, plug block；9, mechanically-sealing apparatus；10, pump shaft；11, rear axle bearing；12, seal gusset；21, axle sleeve；22, pump cover；23, filler interstage sleeve；24, gland；25, locking screw mandrel；26, locking nut；27, flush pipe；28, water flowing case；29, sealing gasket；30, packing ring；31, filler；2301, flushing hole；2302, screwed hole；41, casing ring；42, impeller ring；43, impeller；44, lock-screw；4101, detection hole；4301, spacing ring；4401, bolt body；4402, rubber layer；4403, stopper slot；4404, block is tightened.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, describing the present invention below in conjunction with the accompanying drawings, the description of this part is only exemplary and explanatory, should not have any restriction effect to protection scope of the present invention.
nullAs shown in figs 1 to 6，The present invention structure be: a kind of single-stage double-suction middle-opening pump with good seal performance，It includes front axle bearing 2、Rear axle bearing 11 and the pump shaft 10 running through them，It is arranged with axle sleeve 21 on described pump shaft 10，The middle part of described pump shaft 10 is socketed with impeller 43 and the pump housing 3 coordinated with impeller 43，And the pump housing 3 is connected with front axle bearing 2 and rear axle bearing 11 by securing member 1，It is provided with seal member 7 between the described pump housing 3 and impeller 43，The both sides of the described pump housing 3 are provided with pump cover 22，Stuffing seal 4 and mechanically-sealing apparatus 9 it is combined with respectively at the pump cover 22 of both sides，Described stuffing seal 4 includes being socketed with the filler interstage sleeve 23 docked with pump cover 22 on axle sleeve 21，Described filler interstage sleeve 23 connects the gland 24 coordinated with it，And between gland 24 and filler interstage sleeve 23, form annular seal space，Packing ring 30 and filler 31 it is provided with in described annular seal space，The flushing hole 2301 offered on described packing ring 30 and filler interstage sleeve 23 is docked，The outside of described filler interstage sleeve 23 is provided with the water flowing case 28 connected with flushing hole 2301，And water flowing case 28 connects with flush pipe 27；Described seal member 7 includes that impeller ring 42 sheathed outside impeller 43, described impeller ring 42 and impeller 43 are locked by the lock-screw 44 being radially arranged；The outside of described impeller ring 42 is provided with casing ring 41, and described casing ring 41 is arranged on the pump housing 3.
Preferably, described stuffing seal 4 and mechanically-sealing apparatus 9 are coordinated with pump cover 22 and impeller by seal gusset 12, and seal gusset 12 is that 1.5-3mm is concordant with pump cover 22 seam limit with the side that impeller inlet limit coordinates with the gap of pump cover 22.
Preferably, described gland 24 and filler interstage sleeve 23 are connected by locking screw mandrel 25 and locking nut 26, and offer on filler interstage sleeve 23 with much with 3 with lock the screwed holes that screw mandrel 5 coordinates.
Preferably, described filler interstage sleeve 23 offers uniformly no less than 3 flushing holes 2301.
Preferably, described filler 31 is graphite circle, and the outside of packing ring 30 is provided with 3 graphite circles, and inner side is provided with a graphite circle.
Preferably, it is inclined-plane that described gland 24 penetrates the end face within filler interstage sleeve 23；Described filler interstage sleeve 23 is inclined-plane near the medial surface of the pump housing 3.
Preferably, it is provided with sealing gasket 9 between the position that described filler interstage sleeve 23 contacts with the pump housing 3；Described filler interstage sleeve 23 is stainless steel material.
Further, described impeller ring 42 is interference fit with impeller 43, and described impeller ring 42 and casing ring 41 are matched in clearance.
Preferably, described casing ring 41 in axial direction offers detection hole 4101.
Preferably, described lock-screw 44 includes main body 4401, is provided with one layer of rubber layer 4402 with impeller ring 42 outside the position that main body 4401 coordinates.
Preferably, being provided with stopper slot 4403 inside the flange position of described lock-screw 44, described stopper slot 4403 coordinates with the spacing ring 4301 arranged on impeller 43.
Preferably, it is provided with outside the flange of described lock-screw 44 and tightens block 4404.
Time specifically used, first casing ring 41 is offered detection hole 4101, then casing ring 41 is loaded onto the pump housing 3, afterwards impeller ring 42 is enclosed within impeller 43, and make the position, hole of correspondence coordinate, afterwards lock-screw 44 is loaded onto, and make rubber layer 4402 closely cooperate with impeller ring 42, stopper slot 4403 and spacing ring 4301 is made to closely cooperate, then impeller 43 and the pump housing 3 after installing assemble, whole single-stage double-suction middle-opening pump is assembled according to Fig. 1, in the operation process of pump, by washing pipe 7 water filling, it is then passed through water flowing case 8, enter in packing ring 10 from flushing hole 301, carry out cooling water washing, guarantee the normal operation of packing ring 10, can effectively reduce bearing span simultaneously, ensure that the amount of deflection of axle is a scope safely；And water flowing case 8 may also operate as good cooling effect, prevent temperature too high damage filling-material structure further；Can play good anti-cavitation by the seal gusset 12 of specific setting simultaneously.
It should be noted that, in this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.
Principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention.The above is only the preferred embodiment of the present invention, should be understood that, finiteness due to literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement, retouch or change, it is also possible to above-mentioned technical characteristic is combined by rights；These improve retouching, change or combine, or the most improved design by invention and technical scheme directly apply to other occasion, are regarded as protection scope of the present invention.
Claims (10)
- null1. a single-stage double-suction middle-opening pump with good seal performance，It is characterized in that，It includes front axle bearing (2)、Rear axle bearing (11) and run through their pump shaft (10)，It is arranged with axle sleeve (21) on described pump shaft (10)，The middle part of described pump shaft (10) is socketed with impeller (43) and the pump housing (3) coordinated with impeller (43)，And the pump housing (3) is connected with front axle bearing (2) and rear axle bearing (11) by securing member (1)，It is provided with seal member (7) between the described pump housing (3) and impeller (43)，The both sides of the described pump housing (3) are provided with pump cover (22)，Pump cover (22) place of both sides is combined with stuffing seal (4) and mechanically-sealing apparatus (9) respectively，Described stuffing seal (4) includes being socketed with the filler interstage sleeve (23) docked with pump cover (22) on axle sleeve (21)，Described filler interstage sleeve (23) connects the gland (24) coordinated with it，And between gland (24) and filler interstage sleeve (23), form annular seal space，Packing ring (30) and filler (31) it is provided with in described annular seal space，Flushing hole (2301) docking offered on described packing ring (30) and filler interstage sleeve (23)，The outside of described filler interstage sleeve (23) is provided with the water flowing case (28) connected with flushing hole (2301)，And water flowing case (28) connects with flush pipe (27)；Described seal member (7) includes that the impeller ring (42) that impeller (43) outside is sheathed, described impeller ring (42) and impeller (43) are locked by the lock-screw (44) being radially arranged；The outside of described impeller ring (42) is provided with casing ring (41), and described casing ring (41) is arranged on the pump housing (3).
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 1, it is characterized in that, described stuffing seal (4) and mechanically-sealing apparatus (9) are coordinated with pump cover (22) and impeller by seal gusset (12), and seal gusset (12) is that 1.5-3mm is concordant with pump cover (22) seam limit with the side that impeller inlet limit coordinates with the gap of pump cover (22).
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 1, it is characterised in that described filler (31) is graphite circle, and the outside of packing ring (30) is provided with 3 graphite circles, inner side is provided with a graphite circle.
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 3, it is characterised in that the end face that described gland (24) penetrates filler interstage sleeve (23) internal is inclined-plane；Described filler interstage sleeve (23) is inclined-plane near the medial surface of the pump housing (3).
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 1, it is characterised in that be provided with sealing gasket (29) between the position that described filler interstage sleeve (23) contacts with the pump housing (3)；Described filler interstage sleeve (23) is stainless steel material.
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 1, it is characterized in that, described impeller ring (42) and impeller (43) are interference fit, and described impeller ring (42) and casing ring (41) are matched in clearance.
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 6, it is characterised in that in axial direction offer detection hole (4101) on described casing ring (41).
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 1, it is characterized in that, described lock-screw (44) includes main body (4401), is provided with one layer of rubber layer (4402) with impeller ring (42) outside the position that main body (4401) coordinates.
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 8, it is characterized in that, being provided with stopper slot (4403) inside the flange position of described lock-screw (44), described stopper slot (4403) spacing ring (4301) that arrange upper with impeller (43) coordinates.
- A kind of single-stage double-suction middle-opening pump with good seal performance the most according to claim 9, it is characterised in that be provided with outside the flange of described lock-screw (44) and tighten block (4404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328145.3A CN105864096B (en) | 2016-05-18 | 2016-05-18 | A kind of single-stage double-suction middle-opening pump with good seal performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328145.3A CN105864096B (en) | 2016-05-18 | 2016-05-18 | A kind of single-stage double-suction middle-opening pump with good seal performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864096A true CN105864096A (en) | 2016-08-17 |
| CN105864096B CN105864096B (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610328145.3A Active CN105864096B (en) | 2016-05-18 | 2016-05-18 | A kind of single-stage double-suction middle-opening pump with good seal performance |
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| CN (1) | CN105864096B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313942A (en) * | 2017-06-08 | 2017-11-03 | 三联泵业股份有限公司 | The single-stage double-suction middle-opening pump that a kind of anti-seal ring comes off |
| CN108443169A (en) * | 2018-05-29 | 2018-08-24 | 宜兴市宙斯泵业有限公司 | A kind of centrifugation shurry pump with air shaft sealing device |
| CN109505804A (en) * | 2018-12-25 | 2019-03-22 | 三联泵业股份有限公司 | Cooling water carries out the pipeline of cooling protection to mechanical seal and casing ring |
| CN110094334A (en) * | 2018-01-28 | 2019-08-06 | 吴军 | A kind of submerged pump pump body mounting structure |
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| US4661044A (en) * | 1985-05-24 | 1987-04-28 | Goulds Pumps, Incorporated | Pump having a bushing removal mechanism |
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| CN203230842U (en) * | 2013-03-15 | 2013-10-09 | 北京航天动力研究所 | Novel stuffing box easy to disassemble and assemble |
| CN203532314U (en) * | 2013-11-20 | 2014-04-09 | 浙江佳力科技股份有限公司 | Labyrinth impeller ring clearance structure |
| CN203822692U (en) * | 2014-05-15 | 2014-09-10 | 罗静 | Axial packing seal device |
| CN205639051U (en) * | 2016-05-18 | 2016-10-12 | 湖南南方长河泵业有限公司 | Turn on pump in single -stage double suction with good sealing performance |
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| US4661044A (en) * | 1985-05-24 | 1987-04-28 | Goulds Pumps, Incorporated | Pump having a bushing removal mechanism |
| US20060051198A1 (en) * | 2004-09-07 | 2006-03-09 | Torres-Reyes Jorge E | Sealing system for slurry pump |
| CN201687762U (en) * | 2009-11-03 | 2010-12-29 | 浙江飞旋泵业有限公司 | Sealing structure of centrifugal pump |
| CN102606524A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Oil conveying main pump |
| CN203230842U (en) * | 2013-03-15 | 2013-10-09 | 北京航天动力研究所 | Novel stuffing box easy to disassemble and assemble |
| CN203532314U (en) * | 2013-11-20 | 2014-04-09 | 浙江佳力科技股份有限公司 | Labyrinth impeller ring clearance structure |
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| CN205639051U (en) * | 2016-05-18 | 2016-10-12 | 湖南南方长河泵业有限公司 | Turn on pump in single -stage double suction with good sealing performance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313942A (en) * | 2017-06-08 | 2017-11-03 | 三联泵业股份有限公司 | The single-stage double-suction middle-opening pump that a kind of anti-seal ring comes off |
| CN110094334A (en) * | 2018-01-28 | 2019-08-06 | 吴军 | A kind of submerged pump pump body mounting structure |
| CN108443169A (en) * | 2018-05-29 | 2018-08-24 | 宜兴市宙斯泵业有限公司 | A kind of centrifugation shurry pump with air shaft sealing device |
| CN109505804A (en) * | 2018-12-25 | 2019-03-22 | 三联泵业股份有限公司 | Cooling water carries out the pipeline of cooling protection to mechanical seal and casing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105864096B (en) | 2018-10-30 |
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Effective date of registration: 20230817 Address after: No. 31 Huancheng South Road, Zhongguan Town, Deqing County, Huzhou City, Zhejiang Province, 313000 Patentee after: Zhejiang Nanfang Pump Industry Co.,Ltd. Address before: 410100 Hunan Nanfang Changhe Pump Industry Co.,Ltd., No. 45 Xichong Road, Quantang Street, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: HUNAN NANFANG CHANGHE PUMP INDUSTRY CO.,LTD. |
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