CN202768407U - Special self-priming pump - Google Patents

Special self-priming pump Download PDF

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Publication number
CN202768407U
CN202768407U CN 201220512772 CN201220512772U CN202768407U CN 202768407 U CN202768407 U CN 202768407U CN 201220512772 CN201220512772 CN 201220512772 CN 201220512772 U CN201220512772 U CN 201220512772U CN 202768407 U CN202768407 U CN 202768407U
Authority
CN
China
Prior art keywords
seat
impeller
main shaft
bearing
supporting base
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.)
Expired - Fee Related
Application number
CN 201220512772
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Chinese (zh)
Inventor
张志雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Dahongying University
Original Assignee
Ningbo Dahongying University
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Filing date
Publication date
Application filed by Ningbo Dahongying University filed Critical Ningbo Dahongying University
Priority to CN 201220512772 priority Critical patent/CN202768407U/en
Application granted granted Critical
Publication of CN202768407U publication Critical patent/CN202768407U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A special self-priming pump is characterized in that an impeller back support is closely fixed by at least three backing component bolts on a step face of an inner end of an integral bearing support seat. A water inlet pipe is connected to the upper portion of the front of a pump body, and a semicircular impeller front baffle is hermetically mounted on the lower portion of the front of the pump body and is coaxial with the integral bearing support seat. An inner volute is arranged in an inner cavity of the pump body and supports the impeller back support and an adjustable impeller front support simultaneously, and a spindle is fixed by a pair of bearings positioned in the integral bearing support seat. As improved, a lower cooling water groove and an upper cooling water groove communicated from to top to bottom are arranged between a cylindrical shell of the integral bearing support seat and a cylindrical lubricating oil cavity, a connecting pipe is arranged below the lower cooling water tank and fixed to the lower side of the back of the pump body, and leads to the lower portion of a water outlet cavity of the pump body, a communicating hole reserved on the left of the upper cooling water tank is communicated with the upper portion of the water outlet cavity of the pump body, and a liquid collecting tank is arranged between the outer edge of a bearing block sealing ring of the integral bearing support seat and the impeller back support.

Description

A kind of special self-priming pump
Technical field
The utility model relates to a kind of universal machine product---self-priming pump, particularly a kind of special self-priming pump of durable wherein.
Background technique
The advantage of self-priming pump is whenever to start all to need not to add diversion, in known self-priming pump, no matter be which kind of form, all can cause lubrication failure because lubricant oil heats up after the long-time running, accelerate bearing wear, bearing wear causes that spindle operation is not steady, causes mechanical seal to be lost efficacy, and finally causes the Efficiency Decreasing of self-priming pump and even can't work and scrap.Keep lubricant oil to heat up less, even temperature-constant operation is the most desirable operation conditions.
Summary of the invention
The purpose of this utility model is to provide a kind of convenient and reliable special self-priming pump, overcomes the limitation of prior art, accomplishes that long-play lubricant oil can not heat up yet, and has prolonged bearing working life.To achieve these goals, the utility model adopts following technological scheme:
A kind of special self-priming pump, the back lower through-hole of the pump housing cooperates with the band seal ring step transition of solid bearing supporting base, fixes with at least 3 bearing block bolts; The outer end of the solid bearing supporting base bearing outer end cap of ining succession, the inner step surface place of solid bearing supporting base is fixed wtih behind the impeller by part by the part bolt is airtight afterwards with at least 3; Pump housing front upper is connected with intake pipe, and pump housing front lower is sealed and installed with semi-cylindrical shaped impeller front screen and the solid bearing supporting base is in same axial location; Described pump housing inner chamber has inner spiral casing, inner spiral casing leans on part and the front part that leans on of adjustable impeller after supporting simultaneously impeller, be fixed on semi-cylindrical shaped impeller front screen by part before the adjustable impeller inboard, the inner spiral casing top has isolating plate that pump housing inner chamber is divided into water-inlet cavity and water chamber, the sluicing chamber that the inner spiral casing below has linked hole will be positioned at semi-cylindrical shaped impeller front screen below is connected with water chamber, and pump housing front lowest part discharges water to stop up and is connected with the sluicing chamber; The pair of bearings that is positioned at the solid bearing supporting base is fixed wtih main shaft; Described main shaft mid diameter largest segment is positioned at cylindrical lubricant oil cavity top, and the first step section interference fit of main shaft mid diameter largest segment inboard the seat circular hole right side that a bearing is positioned at the solid bearing supporting base; The first step section interference fit in the main shaft mid diameter largest segment outside the lid circular hole left side that the another bearing is positioned at the bearing outer end cap; On the second step section in the main shaft mid diameter largest segment outside flat key is arranged.As improvement: between the cylindrical housing of described solid bearing supporting base and the cylindrical lubricant oil cavity lower bosh and the upper bosh that communicates up and down arranged; Described lower bosh below has connecting tube and below, pump housing back to fix, and leads to the water chamber bottom of the pump housing; The left survey of described upper bosh has intercommunicating pore to communicate with the water chamber top of the pump housing; By between the part collecting tank is arranged behind the seat bearing sealed ring outer rim of described solid bearing supporting base and the impeller, have isolation bar isolated between collecting tank and the lower bosh, the collecting tank lowest part has outage.
As further improvement: described solid bearing supporting base interference fit a seat bearing sealed ring, and the seat bearing sealed ring has an interior frizing annular groove with the main shaft Fit, and interior frizing annular groove lowest part has a seat inclination spill port to lead to an inclination spill port; Described seat bearing sealed ring right side has one to locate to be slidingly matched between an interior circular hole and the main shaft; Have at least a seat labyrinth to cut oil groove on the circular hole in the described seat, the oil groove lowest part is cut in the seat labyrinth a vertical spill port of seat.
As further improvement: described bearing outer end cap interference fit and is covered bearing sealed ring, and the lid bearing sealed ring has an outer frizing annular groove with the main shaft Fit, and outer frizing annular groove lowest part has one to cover the inclination spill port towards covering the inclination spill port; Described lid bearing sealed ring left side has in the lid and is slidingly matched between the circular hole and main shaft, has at least a lid labyrinth to cut oil groove in the described lid on the circular hole, and the oil groove lowest part is cut in the lid labyrinth a vertical spill port of lid.
As further improvement: described bearing outer end cap interference fit and is covered bearing sealed ring, have on the left of the lid bearing sealed ring between the interior circular hole of lid and the main shaft and be slidingly matched, have at least a lid labyrinth to cut oil groove in the described lid on the circular hole, the oil groove lowest part is cut in the lid labyrinth a vertical spill port of lid; Described lid bearing sealed ring and main shaft Fit have an outer frizing annular groove, and outer frizing annular groove lowest part has a lid inclination spill port towards covering the inclination spill port.
As further improvement: between described intake pipe and the water-inlet cavity check valve plate is arranged, the check valve plate upper end is fixed on above the joint through hole of intake pipe and the pump housing with the rotation assembly.
As further improvement: there is the oil level form side of described solid bearing supporting base, and the center height of oil level form is positioned at covers inclination spill port and seat inclination spill port 6 to 12 millimeters of the lowest belows between the two.
As further improvement: it is characterized in that: by the stationary seat with static sealing ring is arranged on the step hole in the part, on the step static friction seal ring is arranged in the stationary seat behind the described impeller.
As further improvement: inboard the second step section of described main shaft mid diameter largest segment is furnished with water holding ring dish, motive sealing lining and impeller successively, and the taper gland screw is fixed on impeller on the inner termination screw of main shaft.
As further improvement: described motive sealing lining is set with cylindrical spring, dynamic seal ring, rotating seat and kinetic friction seal ring; And described rotary packing ring and described static friction seal ring consist of the spin friction sealing surface.
The beneficial effects of the utility model are: the lower bosh that communicates up and down in the setting of solid bearing supporting base and upper bosh and rotary packing ring and described static friction seal ring formation spin friction sealing surface, in conjunction with water holding ring dish and collecting tank, adding the pair of bearings outside all is provided with respectively a vertical spill port with seat inclination spill port and covers vertical spill port and lid inclination spill port, rely on above-mentioned original creation structure to eliminate the hard nut to crack of self-priming pump, overcome the limitation of prior art, accomplish that long-play lubricant oil can not heat up yet, prolonged bearing and even self-priming pump whole service life; And any leakage neither can occur in lubricant oil, also not can by the external world leak pollute, safe and reliable for a long time.The utility model is novel, easily makes, and market potential is huge.
Description of drawings
Fig. 1 is the overall construction drawing of the special self-priming pump of the utility model;
Fig. 2 is the local enlarged diagram in the 59 indication elliptical line among Fig. 1;
Fig. 3 is the local enlarged diagram in the 49 indication round wire among Fig. 1;
Fig. 4 is that outer end cap screw 70 is fixed on component sectional view on the solid bearing supporting base 20 with bearing outer end cap 40 among Fig. 1;
Fig. 5 is A-A sectional view among Fig. 4.
Embodiment
The utility model is described in further detail in conjunction with the accompanying drawings and embodiments, in Fig. 1, Fig. 2, Fig. 3 and Fig. 4: a kind of special self-priming pump, the back lower through-hole 12 of the pump housing 10 and band seal ring step 21 transition fit of solid bearing supporting base 20, fixing with at least 3 bearing block bolts 97; The outer end of the solid bearing supporting base 20 bearing outer end cap 40 of ining succession, inner step surface 24 places of solid bearing supporting base 20 are fixed wtih behind the impeller by part 50 by part bolt 18 is airtight afterwards with at least 3; The pump housing 10 front upper are connected with intake pipe 70, and the pump housing 10 front lower are sealed and installed with semi-cylindrical shaped impeller front screen 80 and are in same axial location with solid bearing supporting base 20; The described pump housing 10 inner chambers have inner spiral casing 96, inner spiral casing 96 leans on part 50 and the front part 86 that leans on of adjustable impeller after supporting simultaneously impeller, be fixed on semi-cylindrical shaped impeller front screen 80 inboards by part 86 before the adjustable impeller, inner spiral casing 96 tops have isolating plate 98 that the pump housing 10 inner chambers are divided into water-inlet cavity 72 and water chamber 74, the sluicing chamber 73 that inner spiral casing 96 belows have linked hole 11 will be positioned at semi-cylindrical shaped impeller front screen 80 belows is connected with water chamber 74, and the pump housing 10 front lowest parts discharge water and stop up 13 and be connected with sluicing chamber 73; The pair of bearings 32 that is positioned at solid bearing supporting base 20 is fixed wtih main shaft 30; Described main shaft 30 mid diameter largest segment are positioned at cylindrical lubricant oil cavity 95 tops, and the first step section interference fit of main shaft 30 mid diameter largest segment inboards seat circular hole 53 right sides that a bearing 32 is positioned at solid bearing supporting base 20; The first step section interference fit in the main shaft 30 mid diameter largest segment outside lid circular hole 43 left sides that another bearing 32 is positioned at bearing outer end cap 40; On the second step section in the main shaft 30 mid diameter largest segment outside flat key 33 is arranged.As improvement: between the cylindrical housing 88 of described solid bearing supporting base 20 and the cylindrical lubricant oil cavity 95 lower bosh 27 and the upper bosh 26 that communicates up and down arranged; Described lower bosh 27 belows have connecting tube 28 and below, the pump housing 10 back to fix, and lead to water chamber 74 bottoms of the pump housing 10; Described upper bosh 26 left surveys have intercommunicating pore 91 to communicate with water chamber 74 tops of the pump housing 10; By between the part 50 collecting tank 23 is arranged behind seat bearing sealed ring 51 outer rims of described solid bearing supporting base 20 and the impeller, have isolation bar 92 isolated between collecting tank 23 and the lower bosh 27, collecting tank 23 lowest parts have outage 29.
As further improvement: described solid bearing supporting base (20) interference fit a seat bearing sealed ring (51), seat bearing sealed ring (51) has an interior frizing annular groove (52) with main shaft (30) Fit, and interior frizing annular groove (52) lowest part has a seat inclination spill port (58) to lead to seat inclination spill port (57); Described seat bearing sealed ring (51) right side has one to locate to be slidingly matched between an interior circular hole (53) and the main shaft (30); Have at least a seat labyrinth to cut oil groove (54) on the circular hole (53) in the described seat, oil groove (54) lowest part is cut in the seat labyrinth a vertical spill port of seat (55).
As further improvement: described bearing outer end cap (40) interference fit and is covered bearing sealed ring (41), lid bearing sealed ring (41) has an outer frizing annular groove (42) with main shaft (30) Fit, and outer frizing annular groove (42) lowest part has a lid inclination spill port (48) towards covering inclination spill port (47); Have on the left of the described lid bearing sealed ring (41) between the interior circular hole (43) of lid and the main shaft (30) and be slidingly matched, have at least a lid labyrinth to cut oil groove (44) in the described lid on the circular hole (43), oil groove (44) lowest part is cut in the lid labyrinth a lid vertical spill port (45).
As further improvement: between described intake pipe 70 and the water-inlet cavity 72 check valve plate 79 is arranged, check valve plate 79 upper ends are fixed on the through hole top, joint of intake pipe 70 and the pump housing 10 with rotation assembly 71.
As further improvement: there is oil level form 22 side of described solid bearing supporting base 20, and the center height of oil level form 22 is positioned at covers inclination spill port 47 and seat inclination spill port 57 6 to 12 millimeters of the lowest belows between the two.
As further improvement: it is characterized in that: by the stationary seat 31 with static sealing ring 67 is arranged on the part 50 interior step holes, on the stationary seat 31 interior steps static friction seal ring 14 is arranged behind the described impeller.
As further improvement: inboard the second step section of described main shaft 30 mid diameter largest segment is furnished with water holding ring dish 64, motive sealing lining 65 and impeller 60 successively, and taper gland screw 63 is fixed on impeller 60 on the inner termination screw 37 of main shaft 30.
As further improvement: described motive sealing lining 65 is set with cylindrical spring 35, dynamic seal ring 39, rotating seat 34 and kinetic friction seal ring 16; And described rotary packing ring 16 consists of spin friction sealing surface 15 with described static friction seal ring 14.
Among Fig. 2: by the stationary seat 31 with static sealing ring 67 is arranged on the part 50 interior step holes, on the stationary seat 31 interior steps static friction seal ring 14 is arranged behind the described impeller, guarantee to be in the static seal state by between the part 50 behind static friction seal ring 14 and the impeller.
Inboard the second step section of described main shaft 30 mid diameter largest segment is furnished with water holding ring dish 64, motive sealing lining 65 and impeller 60 successively, and taper gland screw 63 is fixed on impeller 60 on the inner termination screw 37 of main shaft 30.Between motive sealing lining 65 endoporus and the main shaft 10 seal with buss circle 36 is arranged, guarantee to be in the static seal state between motive sealing lining 65 endoporus and the main shaft 10.
Described motive sealing lining 65 is set with cylindrical spring 35, dynamic seal ring 39, rotating seat 34 and kinetic friction seal ring 16, guarantees to be in the static seal state between quiet kinetic friction seal ring 16 and the motive sealing lining 65.
Described motive sealing lining 65 is set with cylindrical spring, compressing static friction seal ring 14 consists of spin friction sealing surface 15 with motive sealing ring-type face 16, liquid by outer radial center seepage is blocked under the effect of rubbing surface centrifugal force, guarantees that motive sealing is difficult to leak.
Just in case spin friction sealing surface 15 is destroyed, what leak leaks through flowing away from collecting tank 23 lowest part outages 29 after being blocked by water holding ring dish 64 behind the part endoporus 56 later, can not affect a bearing sealed ring 51.
Be slidingly matched between the seat inner circle 53 of solid bearing supporting base 20 inboards and the main shaft 30, be splashed to lubricant oil on the inner circle 53 and cut oil groove 54 by the seat labyrinth and stop, be back to the cylindrical lubricant oil cavity 95 from the vertical spill port 55 of seat of lowest part.Do not cut oil groove 54 by the seat labyrinth and stop the micro lubricating oil that still sticks on the main shaft 10 and continue to be scraped off by the interior frizing annular groove 52 of seat bearing sealed ring 51, lead to a seat inclination spill port 57 from seat inclination spill port 58 and be back to the cylindrical lubricant oil cavity 95.
Among Fig. 3: solid bearing supporting base 20 is fixing with 17 sealings of four enclosing cover screws of bearing outer end cap 40 usefulness.Be slidingly matched between lid inner circle 43 on the bearing outer end cap 40 and the main shaft 30, be splashed to the lubricant oil tegmentum labyrinth of covering on the inner circle 43 and cut oil groove 44 and stop, be back to the cylindrical lubricant oil cavity 95 from the lid inclination spill port 45 of lowest part.Do not have the tegmentum labyrinth to cut oil groove 44 and stop the outer frizing annular groove 42 that the micro lubricating oil that still sticks on the main shaft 10 continues tegmentum bearing sealed ring 41 and scrape off, lead to from lid inclination spill port 48 and cover inclination spill port 47 and be back to the cylindrical lubricant oil cavity 95.
Guaranteed that lubricant oil neither any leakage can occur, also not can by the external world leak pollute, safe and reliable for a long time.
Among Fig. 4 and Fig. 5: lower bosh 27 and upper bosh 26 that the cylindrical lubricant oil cavity 95 in the described solid bearing supporting base 20 is communicated up and down surround, and are in the water cooling state; Described lower bosh 27 belows have connecting tube 28 and below, the pump housing 10 back to fix, and lead to water chamber 74 bottoms of the pump housing 10; Described upper bosh 26 left surveys have intercommunicating pore 91 to communicate with water chamber (74) top of the pump housing (10), accomplish that long-play lubricant oil can not heat up yet, and have prolonged bearing and even self-priming pump whole service life.
When starting working, from bearing support tank filler sleeve 25 lubricating oil fillings in cylindrical lubricant oil cavity 95, horizontal line 38 alignment oil level forms 22 neutrality lines on the lubricant oil, when external power rotates by flat key 33 drive main spindle 30, impeller 60 beginning rotary works.Under centrifugal action, current are pushed check valve plate 79 open from intake pipe 70 and are entered into water-inlet cavity 72, are sucked by impeller 60 from semi-cylindrical shaped impeller front screen 80, squeeze in the water chamber 74 after impeller 60 actings, flow out from water outlet 19.
Intake pipe 70 above impeller 60 integral body, when quitting work after, water-inlet cavity 72 and the retaining of water chamber 74 interior institutes are not blocked by check valve plate 79 and can be produced siphon emptying.Guarantee that water chamber 74 water levels and intake pipe 70 in the pump housing 10 maintain an equal level, impeller 60 integral body are immersed under water, can again directly start providing convenience of work for the utility model.When having the impurity accident to block impeller 60, only need by hand handle type stud nut 83 to be unloaded from stud 82, open semi-cylindrical shaped impeller front screen 80, just can rapidly removing faults.
When the utility model is stopped using than low environment for a long time in temperature, can stop up 13 with discharging water and unload, allow ponding in water-inlet cavity 72 and the water chamber 74 pass linked hole 11 through the sluicing chamber 73 dischargings clean, can prevent the bursting by freezing pump housing 10 etc. that freezes.

Claims (8)

1. special self-priming pump, band seal ring step (21) transition fit of the back lower through-hole (12) of the pump housing (10) and solid bearing supporting base (20), fixing with at least 3 bearing block bolts (97); The outer end of solid bearing supporting base (20) the bearing outer end cap (40) of ining succession, the inner step surface (24) of solid bearing supporting base (20) are located to be fixed wtih behind the impeller by part (50) by part bolt (18) is airtight afterwards with at least 3; The pump housing (10) front upper is connected with intake pipe (70), and the pump housing (10) front lower is sealed and installed with semi-cylindrical shaped impeller front screen (80) and is in same axial location with solid bearing supporting base (20); The described pump housing (10) inner chamber has inner spiral casing (96), inner spiral casing (96) leans on part (50) and the front part (86) that leans on of adjustable impeller after supporting simultaneously impeller, be fixed on semi-cylindrical shaped impeller front screen (80) inboard by part (86) before the adjustable impeller, inner spiral casing (96) top has isolating plate (98) that the pump housing (10) inner chamber is divided into water-inlet cavity (72) and water chamber (74), the sluicing chamber (73) that inner spiral casing (96) below has linked hole (11) will be positioned at semi-cylindrical shaped impeller front screen (80) below is connected with water chamber (74), and the lowest part obstruction (13) that discharges water in the pump housing (10) front is connected with sluicing chamber (73); The pair of bearings (32) that is positioned at solid bearing supporting base (20) is fixed wtih main shaft (30); Described main shaft (30) mid diameter largest segment is positioned at cylindrical lubricant oil cavity (95) top, and the first step section interference fit of main shaft (30) mid diameter largest segment inboard seat circular hole (53) right side that a bearing (32) is positioned at solid bearing supporting base (20); The first step section interference fit in main shaft (30) the mid diameter largest segment outside lid circular hole (43) left side that another bearing (32) is positioned at bearing outer end cap (40); On the second step section in main shaft (30) the mid diameter largest segment outside flat key (33) is arranged, it is characterized in that: between the cylindrical housing (88) of described solid bearing supporting base (20) and the cylindrical lubricant oil cavity (95) lower bosh (27) and the upper bosh (26) that communicates up and down arranged; Described lower bosh (27) below has connecting tube (28) and below, the pump housing (10) back to fix, and leads to water chamber (74) bottom of the pump housing (10); The left survey of described upper bosh (26) has intercommunicating pore (91) to communicate with water chamber (74) top of the pump housing (10); By between the part (50) collecting tank (23) is arranged behind seat bearing sealed ring (51) outer rim of described solid bearing supporting base (20) and the impeller, have isolation bar (92) isolated between collecting tank (23) and the lower bosh (27), collecting tank (23) lowest part has outage (29).
2. according to right 1 described a kind of special self-priming pump, it is characterized in that: described solid bearing supporting base (20) interference fit seat bearing sealed ring (51), seat bearing sealed ring (51) has an interior frizing annular groove (52) with main shaft (30) Fit, and interior frizing annular groove (52) lowest part has a seat inclination spill port (58) to lead to seat inclination spill port (57); Described seat bearing sealed ring (51) right side has one to locate to be slidingly matched between an interior circular hole (53) and the main shaft (30); Have at least a seat labyrinth to cut oil groove (54) on the circular hole (53) in the described seat, oil groove (54) lowest part is cut in the seat labyrinth a vertical spill port of seat (55).
3. according to right 1 described a kind of special self-priming pump, it is characterized in that: described bearing outer end cap (40) interference fit and is covered bearing sealed ring (41), lid bearing sealed ring (41) has an outer frizing annular groove (42) with main shaft (30) Fit, and outer frizing annular groove (42) lowest part has a lid inclination spill port (48) towards covering inclination spill port (47); Have on the left of the described lid bearing sealed ring (41) between the interior circular hole (43) of lid and the main shaft (30) and be slidingly matched, have at least a lid labyrinth to cut oil groove (44) in the described lid on the circular hole (43), oil groove (44) lowest part is cut in the lid labyrinth a lid vertical spill port (45).
4. according to right 6 described a kind of special self-priming pumps, it is characterized in that: between described intake pipe (70) and the water-inlet cavity (72) check valve plate (79) is arranged, check valve plate (79) upper end is fixed on the through hole top, joint of intake pipe (70) and the pump housing (10) with rotation assembly (71).
5. according to right 1 described a kind of special self-priming pump, it is characterized in that: there is oil level form (22) side of described solid bearing supporting base (20), and the center height of oil level form (22) is positioned at covers inclination spill port (47) and seat inclination spill port (57) 6 to 12 millimeters of the lowest belows between the two.
6. according to right 1 described a kind of special self-priming pump, it is characterized in that: by the stationary seat (31) of band static sealing ring (67) is arranged on the interior step hole of part (50), on the interior step of stationary seat (31) static friction seal ring (14) is arranged behind the described impeller.
7. according to right 1 described a kind of special self-priming pump, it is characterized in that: inboard the second step section of described main shaft (30) mid diameter largest segment is furnished with water holding ring dish (64), motive sealing lining (65) and impeller (60) successively, and taper gland screw (63) is fixed on impeller (60) on the inner termination screw (37) of main shaft (30).
8. according to right 7 described a kind of special self-priming pumps, it is characterized in that: described motive sealing lining (65) is set with cylindrical spring (35), dynamic seal ring (39), rotating seat (34) and kinetic friction seal ring (16); And described rotary packing ring (16) consists of spin friction sealing surface (15) with described static friction seal ring (14).
CN 201220512772 2012-09-20 2012-09-20 Special self-priming pump Expired - Fee Related CN202768407U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220512772 CN202768407U (en) 2012-09-20 2012-09-20 Special self-priming pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220512772 CN202768407U (en) 2012-09-20 2012-09-20 Special self-priming pump

Publications (1)

Publication Number Publication Date
CN202768407U true CN202768407U (en) 2013-03-06

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Application Number Title Priority Date Filing Date
CN 201220512772 Expired - Fee Related CN202768407U (en) 2012-09-20 2012-09-20 Special self-priming pump

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016355A (en) * 2012-09-20 2013-04-03 宁波大红鹰学院 Special self-sucking pump
CN104763641A (en) * 2015-03-30 2015-07-08 强胜精密机械(苏州)有限公司 Swirl self-priming pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016355A (en) * 2012-09-20 2013-04-03 宁波大红鹰学院 Special self-sucking pump
CN104763641A (en) * 2015-03-30 2015-07-08 强胜精密机械(苏州)有限公司 Swirl self-priming pump
CN104763641B (en) * 2015-03-30 2017-08-25 强胜精密机械(苏州)有限公司 A kind of rotational flow self-priming pump

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