CN105257548A - Pump - Google Patents
Pump Download PDFInfo
- Publication number
- CN105257548A CN105257548A CN201510666286.1A CN201510666286A CN105257548A CN 105257548 A CN105257548 A CN 105257548A CN 201510666286 A CN201510666286 A CN 201510666286A CN 105257548 A CN105257548 A CN 105257548A
- Authority
- CN
- China
- Prior art keywords
- pump
- cover
- impeller
- sealing case
- main shaft
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a pump. The pump comprises a pump body, a pump cover, a front cover plate, a front safety board, an impeller, a rear cover plate, a rear safety board, a sealing box, a bearing and a spindle. The front end of the spindle extends to an inner cavity of the pump body, and the impeller is fixed to the front end of the spindle; the spindle is sleeved with an acid blocking piece and a shaft sleeve, and the shaft sleeve is arranged between the acid blocking piece and the impeller; the outer wall of the shaft sleeve is sequentially sleeved with a K-shaped sealing ring and the sealing box from inside to outside, and a sealing box cover is arranged at a right end cover of the sealing box in a covering manner; a top ring is arranged between the inner side of the sealing box cover and the K-shaped sealing ring, and a round hole is formed in the K-shaped sealing ring; a cooling water nozzle is formed in the round hole and penetrates the sealing box; and the end of the cooling water nozzle is exposed out of the sealing box. The impeller of the pump is divided into two stages, and a protruding step is arranged between the two stages of blades; the matched pump is also provided with sinking steps, the impeller step is arranged so as to block the backflow pressure of the outlet fluid pressure of the pump to the shaft seal, and the service life of the shaft seal is ensured and prolonged.
Description
Technical field
The present invention relates to pump, relate to a kind of high efficiency construction pump specifically, this pump long service life.
Background technique
City inspection shaft sludge slurry, Sewage Plant settled sludge, the operating modes such as chemical plant, smelter, cesspool, accident groove all also exist the precipitating sludge slurry in low level pond, these sludge slurries are when entering next procedure process, all to promote to be delivered to down and process post together, but it is a difficult problem long-term in the industry that the lifting of the mud slip of this operating mode suction is sent, suitable transfer pump.
Such as: if with latent dirty formula transport pump, because a large amount of granular solids things in mud can clogging impellers, cause stuck, submerged pump does not have anti-corrosion function simultaneously, just cannot use the corrosivity mud in chemical plant; And for example, state mud slip if having the suction of the displacement pump of self-absorption function to serve with screw pump, rotor pump etc., owing to containing a large amount of silk, sheet and granular solid matter in this type of mud, be easy to stuck screw pump or rotor pump; For another example, if select the centrifugal Under Water Pumps of chemical industry and self-priming pump to inhale serve the slip stating low level pond, because of the restriction of Under Water Pumps concentration and the reason damage pump such as self-suction pump impeller runner is narrow and small, ideal effect can not reached yet.Therefore, the settled sludge in a lot of Lower tank, inspection shaft, change Dung pond and sediment, can only draw cleaning with excavated by manual work.
Because these sediments are all in the bottom of pond groove, often have biogas to gather, if cleaning personnel run into biogas gently, injure health, heavy then entail dangers to life, the report that the whole nation is dug slag because of lower cloaca, inspection shaft, Dung pond and got killed often occurs, and operate under these operating modes, environment is dirty smelly, and this work of operating conditions extreme difference is the mind pain that vast sanitationman is difficult to overcome for a long time.
But not yet have up till now and be applicable to inhaling the conveying mechanism sending low level sludge slurry, slag.The present inventor once carried out the trial exploitation of this respect for a long time, such as attempt to use direct acting bellowspump, membrane pump with pneumatic drive, the sludge slurry in low level pond carried by sliding vane rotary pump isometric(al) pump, especially inhale when sending the corrosivity mud of the enterprises such as chemical industry hydrometallurgy, easily be corroded, also has current chemical industry, smelt, the machinery of each industrial field slurry body such as environmental protection, usually or based on transport pump, the major defect of transport pump slurry is that efficiency is low, the transfer efficiency of the pump within general 100m3/h only has about 30% ~ 50%, energy consumption is high especially, another shortcoming of transport pump slip is that the linear velocity of overcurrent slurry is large, generally to reach more than 20 meters per second, slip at a high speed produces erosion to the assembly of pump inner chamber, dig the wearing and tearing of cutter property, make pump extremely short for working life.
The post of general height abrasion, the leaching slurry delivery pump of such as zinc abstraction, the life-span only has 1 ~ 2 month.In slurry pipeline transport field, so far energy large size is not yet had to replace the product of pump, although market has small-sized plunger pump, diaphragm pump, peristaltic pump isometric(al) transfer pump, little owing to there is feed flow, without shortcomings such as anti-corrosive properties, at industrial field still without the value of large size large-scale popularization application.
Be provided with seal ring between traditional axle sleeve and sealing case, but sealing circle is kept away in the gap that unavoidable grit enters between axle sleeve and sealing case, the card sand of seal ring lost efficacy.
Summary of the invention
For deficiency of the prior art, the technical problem to be solved in the present invention there are provided a kind of pump, and this pump efficiency of construction is high, the life-span is long.
For solving the problems of the technologies described above, the present invention is realized by following scheme:
A kind of pump, it comprises:
The pump housing, pump cover, front shroud, front safeguard, impeller, back shroud, rear safeguard, sealing case, bearing, main shaft.
Described pump housing front opening place connects pump cover, the joint of the pump housing and pump cover is lined with pump cover pad, described pump housing rear end connects back shroud, pump cover and back shroud are linked together in pump housing bottom by front and rear cover plate clamping bolt, described back shroud coupling shaft bearing, the cavity volume two ends of bearing support are provided with bearing, on described bearing, cover has main shaft, this front-end of spindle extends to pump housing inner chamber, impeller is fixed with at front-end of spindle, this impeller and main shaft are fixed by the locking nut being placed in spindle nose, on described locking nut, cover has locking nut L pad, the nose threads post of main shaft is rotary with rotating-proof nut, described impeller and main shaft contacting point are provided with washer,
On described main shaft, also cover has acid-blocking piece, axle sleeve, described axle sleeve is placed between acid-blocking piece and impeller, described axle sleeve outer wall from inside to outside overlaps successively K RunddichtringO, sealing case, described sealing case right-hand member is stamped sealing box cover, collar is provided with inside described sealing box cover and between K RunddichtringO, K RunddichtringO has a circular hole, this circular hole arranges cooling water nozzle, cooling water nozzle is through sealing case, its end is exposed to sealing case outside, described cooling water nozzle bottom cover has seal cage, for the sealing between cooling water nozzle and K RunddichtringO, described sealing case left end is provided with sealing case cushion block, overlap between described sealing case and impeller and have sealing case pad, sealing case pad and sealing case cushion block are close together, described sealing case) in along on outer wall also cover have sealing case Non-return ring, the blade of described impeller is divided into secondary, has raised step between two grade blades, and the pump housing matched with it also has recessed step, and the object arranging impeller step blocks pump discharge hydrodynamic pressure to the pressure that backflows of shaft sealing,
Outside described pump cover, cover has front shroud, described front shroud is located by flange location Hough, described flange location Hough is connected on the outer wall circular groove of pump cover opening, described flange location Hough is provided with notch, on this notch, cover has O RunddichtringO, this O RunddichtringO also contacts with front shroud wall, described front shroud is provided with front safeguard, this front safeguard is fixed near front shroud end by front safeguard fixing bolt, described rear safeguard is fixed on back shroud by rear safeguard fixing bolt, lap joint flange connects front shroud, back shroud, lap joint flange connecting movable sleeve Hough, along being fixed on the pump housing by cross coupling bar in described back shroud,
The cavity volume two ends of described bearing support have been bolted bearing side cover, and bearing side cover is placed on main shaft, inside the joint of bearing side cover and main shaft, be provided with bearing enclosure.
Further, between described axle sleeve and impeller, be provided with impeller pad, between described axle sleeve and acid-blocking piece, be provided with axle sleeve pad.
Further, the cavity volume of described bearing support has circular hole, this circular hole is provided with plug cock.
Further, the described pump housing is the built-in metal matrix type pump housing.
Further, described impeller is provided with blade, the gap between this blade and pump cover is between 0.2 ~ 0.5mm.
Relative to prior art, the invention has the beneficial effects as follows: if the present invention allows cooling water to infiltrate in medium, the dynamic seal of band cooling water K type can be selected, outer chilled water unit can be added, extend the working life of O RunddichtringO.The Korrosionsmediums such as impure sewage (cooling water of band cooling water K type dynamic seal is clean tap water, and pressure is suitable within 0.05Mpa).The impeller of pump of the present invention is divided into secondary, raised step is had between two grade blades, the pump housing matched with it also has recessed step, and the object arranging impeller step blocks pump discharge hydrodynamic pressure to the pressure that backflows of shaft sealing, the working life of guarantee and extending shaft sealing.Be provided with between axle sleeve and sealing case in the gap that sand control K RunddichtringO makes grit can not enter between axle sleeve and sealing case, overcome the shortcoming that original resistance to granule sealed card sand lost efficacy.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is pump structure schematic diagram of the present invention.
Fig. 2 is pump partial enlarged drawing of the present invention.
Mark in accompanying drawing: front and rear cover plate clamping bolt 1, the pump housing 2, pump cover pad 3, O RunddichtringO 4, pump cover 5, flange location Hough 6, front shroud 7, front safeguard fixing bolt 8, front safeguard 9, lap joint flange 10, kink Hough 11, locking nut 12, rotating-proof nut 13, washer 14, locking nut L pad 15, impeller 16, impeller pad 17, sealing case Non-return ring 18, cross coupling bar 19, back shroud 20, rear safeguard 21, rear safeguard fixing bolt 22, sealing case pad 23, sealing case cushion block 24, axle sleeve 25, sealing case 26, cooling water nozzle 27, K RunddichtringO 28, seal cage 29, O RunddichtringO 30, sealing box cover 31, collar 32, axle sleeve pad 33, acid-blocking piece 34, bearing side cover 35, bearing enclosure 36, bearing 37, bearing support 38, main shaft 39, plug cock 40.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Please refer to accompanying drawing 1 ~ 2, a kind of pump of the present invention, it comprises: the pump housing 2, pump cover 5, front shroud 7, front safeguard 9, impeller 16, back shroud 20, rear safeguard 21, sealing case 26, bearing 37, main shaft 39, the described pump housing 2 front opening place connects pump cover 5, the pump housing 2 is lined with pump cover pad 3 with the joint of pump cover 5, the described pump housing 2 rear end connects back shroud 20, pump cover 5 and back shroud 20 are linked together in the pump housing 2 bottom by front and rear cover plate clamping bolt 1, described back shroud 20 coupling shaft bearing 38, the cavity volume two ends of bearing support 38 are provided with bearing 37, on described bearing 37, cover has main shaft 39, this main shaft 39 front end extends to the pump housing 2 inner chamber, impeller 16 is fixed with in main shaft 39 front end, this impeller 16 is fixed by the locking nut 12 being placed in spindle nose with main shaft 39, on described locking nut 12, cover has locking nut L pad 15, the nose threads post of main shaft 39 is rotary with rotating-proof nut 13, described impeller 16 is provided with washer 14 with main shaft 39 contacting point, on described main shaft 39, also cover has acid-blocking piece 34, axle sleeve 25, described axle sleeve 25 is placed between acid-blocking piece 34 and impeller 16, described axle sleeve 25 outer wall from inside to outside overlaps successively K RunddichtringO 28, sealing case 26, described sealing case 26 right-hand member is stamped sealing box cover 31, collar 32 is provided with inside described sealing box cover 31 and between K RunddichtringO 28, K RunddichtringO 28 has a circular hole, this circular hole arranges cooling water nozzle 27, cooling water nozzle 27 is through sealing case 26, it is outside that its end is exposed to sealing case 26, described cooling water nozzle 27 bottom cover has seal cage 29, for the sealing between cooling water nozzle 27 and K RunddichtringO 28, described sealing case 26 left end is provided with sealing case cushion block 24, overlap between described sealing case 26 and impeller 16 and have sealing case pad 23, sealing case pad 23 and sealing case cushion block 24 are close together, sealing case Non-return ring 18 is had along outer wall also overlaps in described sealing case 26, the blade of described impeller is divided into secondary, has raised step between two grade blades, and the pump housing matched with it also has recessed step, and the object arranging impeller step blocks pump discharge hydrodynamic pressure to the pressure that backflows of shaft sealing, outside described pump cover 5, cover has front shroud 7, described front shroud 7 is located by flange location Hough 6, described flange location Hough 6 is connected on the outer wall circular groove of pump cover 5 opening, described flange location Hough 6 is provided with notch, on this notch, cover has O RunddichtringO 4, this O RunddichtringO 4 also contacts with front shroud 7 wall, described front shroud 7 is provided with front safeguard 9, this front safeguard 9 is fixed near front shroud 7 end by front safeguard fixing bolt 8, described rear safeguard 21 is fixed on back shroud 20 by rear safeguard fixing bolt 22, lap joint flange 10 connects front shroud 7, back shroud 20, lap joint flange 10 connecting movable sleeve Hough 11, along being fixed on the pump housing 2 by cross coupling bar 19 in described back shroud 20, the cavity volume two ends of described bearing support 38 have been bolted bearing side cover 35, bearing side cover 35 is placed on main shaft 39, bearing enclosure 36 is provided with inside bearing side cover 35 with the joint of main shaft 39, impeller pad 17 is provided with between described axle sleeve 25 and impeller 16, axle sleeve pad 33 is provided with between described axle sleeve 25 and acid-blocking piece 34, the cavity volume of described bearing support 38 has circular hole, this circular hole is provided with plug cock 40, the described pump housing 2 is the built-in metal matrix type pump housing, described impeller 16 is provided with blade, and the gap between this blade and pump cover 5 is between 0.2 ~ 0.5mm.If the present invention allows cooling water to infiltrate in medium, the dynamic seal of band cooling water K type can be selected, outer chilled water unit can be added, extend the working life of O RunddichtringO.The Korrosionsmediums such as impure sewage (cooling water of band cooling water K type dynamic seal is clean tap water, and pressure is suitable within 0.05Mpa).The impeller of pump of the present invention is divided into secondary, raised step is had between two grade blades, the pump housing matched with it also has recessed step, and the object arranging impeller step blocks pump discharge hydrodynamic pressure to the pressure that backflows of shaft sealing, the working life of guarantee and extending shaft sealing.Be provided with between axle sleeve and sealing case in the gap that sand control K RunddichtringO makes grit can not enter between axle sleeve and sealing case, overcome the shortcoming that original resistance to granule sealed card sand lost efficacy.
The foregoing is only the preferred embodiment of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a pump, is characterized in that: it comprises:
The pump housing (2), pump cover (5), front shroud (7), front safeguard (9), impeller (16), back shroud (20), rear safeguard (21), sealing case (26), bearing (37), main shaft (39);
The described pump housing (2) front opening place connects pump cover (5), the pump housing (2) is lined with pump cover pad (3) with the joint of pump cover (5), the described pump housing (2) rear end connects back shroud (20), pump cover (5) and back shroud (20) are linked together in the pump housing (2) bottom by front and rear cover plate clamping bolt (1), described back shroud (20) coupling shaft bearing (38), the cavity volume two ends of bearing support (38) are provided with bearing (37), the upper cover of described bearing (37) has main shaft (39), this main shaft (39) front end extends to the pump housing (2) inner chamber, impeller (16) is fixed with in main shaft (39) front end, this impeller (16) is fixed by the locking nut (12) being placed in spindle nose with main shaft (39), the upper cover of described locking nut (12) has locking nut L pad (15), the nose threads post of main shaft (39) is rotary with rotating-proof nut (13), described impeller (16) and main shaft (39) contacting point are provided with washer (14),
On described main shaft (39), also cover has acid-blocking piece (34), axle sleeve (25), described axle sleeve (25) is placed between acid-blocking piece (34) and impeller (16), described axle sleeve (25) outer wall from inside to outside overlaps successively K RunddichtringO (28), sealing case (26), described sealing case (26) right-hand member is stamped sealing box cover (31), collar (32) is provided with between described sealing box cover (31) inner side and K RunddichtringO (28), K RunddichtringO (28) has a circular hole, this circular hole arranges cooling water nozzle (27), cooling water nozzle (27) is through sealing case (26), it is outside that its end is exposed to sealing case (26), described cooling water nozzle (27) bottom cover has seal cage (29), for the sealing between cooling water nozzle (27) and K RunddichtringO (28), described sealing case (26) left end is provided with sealing case cushion block (24), overlap between described sealing case (26) and impeller (16) and have sealing case pad (23), sealing case pad (23) and sealing case cushion block (24) are close together, sealing case Non-return ring (18) is had along outer wall also overlaps in described sealing case (26), the blade of described impeller (16) is divided into secondary, raised step is had between two grade blades, the pump housing matched with it also has recessed step, the object arranging impeller step blocks pump discharge hydrodynamic pressure to the pressure that backflows of shaft sealing,
Described pump cover (5) outside cover has front shroud (7), described front shroud (7) is located Hough (6) location by flange, described flange location Hough (6) is connected on the outer wall circular groove of pump cover (5) opening, described flange location Hough (6) is provided with notch, on this notch, cover has O RunddichtringO (4), this O RunddichtringO (4) also contacts with front shroud (7) wall, described front shroud (7) is provided with front safeguard (9), this front safeguard (9) is fixed near front shroud (7) end by front safeguard fixing bolt (8), described rear safeguard (21) is fixed on back shroud (20) by rear safeguard fixing bolt (22), lap joint flange (10) connects front shroud (7), back shroud (20), lap joint flange (10) connecting movable sleeve Hough (11), along being fixed on the pump housing (2) by cross coupling bar (19) in described back shroud (20),
The cavity volume two ends of described bearing support (38) have been bolted bearing side cover (35), and bearing side cover (35) is placed on main shaft (39), inside bearing side cover (35) with the joint of main shaft (39), be provided with bearing enclosure (36).
2. a kind of pump according to claim 1, is characterized in that: be provided with impeller pad (17) between described axle sleeve (25) and impeller (16), is provided with axle sleeve pad (33) between described axle sleeve (25) and acid-blocking piece (34).
3. a kind of pump according to claim 1, is characterized in that: the cavity volume of described bearing support (38) has circular hole, and this circular hole is provided with plug cock (40).
4. a kind of pump according to claim 1, is characterized in that: the described pump housing (2) is the built-in metal matrix type pump housing.
5. a kind of pump according to claim 1, is characterized in that: (16) are provided with blade to described impeller, and the gap between this blade and pump cover (5) is between 0.2 ~ 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666286.1A CN105257548B (en) | 2015-10-16 | 2015-10-16 | A kind of pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666286.1A CN105257548B (en) | 2015-10-16 | 2015-10-16 | A kind of pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105257548A true CN105257548A (en) | 2016-01-20 |
| CN105257548B CN105257548B (en) | 2017-11-24 |
Family
ID=55097417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510666286.1A Expired - Fee Related CN105257548B (en) | 2015-10-16 | 2015-10-16 | A kind of pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105257548B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884800A (en) * | 2017-04-15 | 2017-06-23 | 阮秀梅 | One kind can pre- anticlogging mortar pump |
| CN108869330A (en) * | 2018-09-22 | 2018-11-23 | 浙江大元泵业股份有限公司 | A kind of submersible pump with axial-flow type sand-prevention structure |
| CN110056533A (en) * | 2019-05-21 | 2019-07-26 | 安徽卧龙泵阀股份有限公司 | A kind of impeller of chemical centrifugal pump locking device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095293U (en) * | 1991-06-12 | 1992-02-05 | 机械电子工业部合肥通用机械研究所 | Multi-stage overhanging centrifugal pump |
| US5340272A (en) * | 1992-08-19 | 1994-08-23 | Bw/Ip International, Inc. | Multi-stage centrifugal pump incorporating a sealed thrust bearing |
| CN2644727Y (en) * | 2003-09-24 | 2004-09-29 | 宜兴市宙斯泵业有限公司 | Modified sealing device for pump |
| CN2893235Y (en) * | 2006-04-25 | 2007-04-25 | 宜兴市宙斯泵业有限公司 | Wear resisting centrifugal mortar pump |
| CN201696301U (en) * | 2010-04-27 | 2011-01-05 | 大连双龙泵业制造有限公司 | Unilateral cantilever support multistage centrifugal pump |
| CN103486053A (en) * | 2012-06-15 | 2014-01-01 | 江苏巨浪泵阀有限公司 | Chemical pump |
-
2015
- 2015-10-16 CN CN201510666286.1A patent/CN105257548B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095293U (en) * | 1991-06-12 | 1992-02-05 | 机械电子工业部合肥通用机械研究所 | Multi-stage overhanging centrifugal pump |
| US5340272A (en) * | 1992-08-19 | 1994-08-23 | Bw/Ip International, Inc. | Multi-stage centrifugal pump incorporating a sealed thrust bearing |
| CN2644727Y (en) * | 2003-09-24 | 2004-09-29 | 宜兴市宙斯泵业有限公司 | Modified sealing device for pump |
| CN2893235Y (en) * | 2006-04-25 | 2007-04-25 | 宜兴市宙斯泵业有限公司 | Wear resisting centrifugal mortar pump |
| CN201696301U (en) * | 2010-04-27 | 2011-01-05 | 大连双龙泵业制造有限公司 | Unilateral cantilever support multistage centrifugal pump |
| CN103486053A (en) * | 2012-06-15 | 2014-01-01 | 江苏巨浪泵阀有限公司 | Chemical pump |
Non-Patent Citations (1)
| Title |
|---|
| 全国化工设备设计技术中心站: "《工业泵推荐产品样本》", 31 January 2004 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884800A (en) * | 2017-04-15 | 2017-06-23 | 阮秀梅 | One kind can pre- anticlogging mortar pump |
| CN106884800B (en) * | 2017-04-15 | 2019-05-14 | 新沂市利源机械有限公司 | One kind can pre- anticlogging mortar pump |
| CN108869330A (en) * | 2018-09-22 | 2018-11-23 | 浙江大元泵业股份有限公司 | A kind of submersible pump with axial-flow type sand-prevention structure |
| CN108869330B (en) * | 2018-09-22 | 2023-08-15 | 浙江大元泵业股份有限公司 | Submersible electric pump with axial-flow sand-proof structure |
| CN110056533A (en) * | 2019-05-21 | 2019-07-26 | 安徽卧龙泵阀股份有限公司 | A kind of impeller of chemical centrifugal pump locking device |
| CN110056533B (en) * | 2019-05-21 | 2024-04-09 | 安徽卧龙泵阀股份有限公司 | Chemical pump impeller locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105257548B (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105257548A (en) | Pump | |
| CN113279967A (en) | Long shaft pump structure | |
| CN206929086U (en) | A kind of immersible pump of hydraulic-driven | |
| CN204436713U (en) | A kind of liquid feeding pump | |
| CN105179255A (en) | Self-priming jet pump | |
| CN204436712U (en) | A kind of liquid feeding pump | |
| CN206555137U (en) | A kind of self-sucking pot for being used to start centrifugal pump | |
| CN205207202U (en) | Self sucking spray pump | |
| CN104612931A (en) | Mud conveying pump | |
| CN204532733U (en) | A kind of liquid feeding pump | |
| CN205207270U (en) | Immersible pump sleeve | |
| CN206738176U (en) | A kind of non blocking type flexibility blowdown helicoidal pump | |
| CN207377810U (en) | A kind of long-shaft pump of double suction structure | |
| CN107939688A (en) | Twin-stage self-balanced multiple-stage centrifugal pump | |
| CN202431535U (en) | Mine small pneumatic immersible pump | |
| CN106884800B (en) | One kind can pre- anticlogging mortar pump | |
| CN201228641Y (en) | Highly effective anticorrosive centrifugal pump | |
| CN109268276A (en) | A kind of immersible pump of hydraulic-driven | |
| CN108386380A (en) | A kind of single tube vertical long multistage pump big hub outlet-inclined impeller vane method for designing impeller | |
| CN110820917A (en) | Novel blowdown pump station | |
| CN217481546U (en) | Submerged slurry pump | |
| CN104612932A (en) | Mud conveying pump | |
| CN217080810U (en) | Molten salt pump | |
| CN207659202U (en) | A kind of settlement of sewage circulator | |
| CN201858164U (en) | Liquid delivery pump for well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20201016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |