CN111852811B - Small-size domestic suction pump - Google Patents
Small-size domestic suction pump Download PDFInfo
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- CN111852811B CN111852811B CN202010746977.3A CN202010746977A CN111852811B CN 111852811 B CN111852811 B CN 111852811B CN 202010746977 A CN202010746977 A CN 202010746977A CN 111852811 B CN111852811 B CN 111852811B
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- hole
- circular groove
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- cylinder
- water
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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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0413—Cams
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0421—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0452—Distribution members, e.g. valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
Abstract
The invention discloses a small household water pump, which comprises a shell, wherein a first circular groove and a second circular groove are formed on the shell, and an upper sealing cover and a lower sealing cover which are fixedly connected are respectively inserted and sleeved at the end parts of the first circular groove and the second circular groove; a cylinder body is sleeved in the shell, a plurality of pistons are sleeved in cylinder holes of the cylinder body, and the pistons are provided with driving mechanisms for driving the pistons to do reciprocating motion in the radial direction; a water inlet through hole which is communicated with the first circular groove and the corresponding cylinder hole is formed in the first circular groove, and a water inlet one-way valve mechanism is arranged in the water inlet through hole; a water outlet through hole which is communicated with the second circular groove and the corresponding cylinder hole is formed in the second circular groove, and a water outlet one-way valve mechanism is arranged in the water outlet through hole; the shell is provided with a water inlet connector communicated with the first circular groove and a water outlet connector communicated with the second circular groove. Each part of the invention is designed in a split way, and the internal structure is simple, and the maintenance is convenient; meanwhile, the pressure of output water can be ensured while the requirement of large flow is met, and the structure is stable.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a small household water pump.
Background
Most of the existing household water pumps are designed integrally, and the internal structures of the existing household water pumps are complex, so that when the internal parts of the water pumps break down, the internal structures of the water pumps are relatively complex for non-professionals, and most users are difficult to finish the maintenance of the water pumps and replace the broken parts by themselves. Therefore, once the water pump fails, the water pump needs to be maintained at high cost by a special worker, and in the maintenance process, the disassembly and the fixation of the water pump are relatively time-consuming and labor-consuming.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a small household water pump, wherein all parts of the small household water pump are designed in a split mode, the internal structure is simple, and the small household water pump is convenient to maintain; meanwhile, the pressure of the output water can be ensured while the requirement on large flow is met, and the structure is stable.
The scheme for solving the technical problem is as follows:
a small household water pump comprises a shell, an upper sealing cover, a lower sealing cover, a cylinder body and a piston, wherein a first circular groove with an upper side opening and a second circular groove with a lower side opening are formed in the outer edge of the shell; a cylinder body mounting hole is formed in the middle of the shell, and the cylinder body is annular and is inserted in the cylinder body mounting hole; a plurality of cylinder holes which penetrate through the cylinder body in the radial direction are formed in the cylinder body; the piston is matched with the cylinder hole and is inserted in the cylinder hole, and the piston is provided with a driving mechanism for driving the piston to do reciprocating motion in the radial direction;
a plurality of first bosses which are in one-to-one correspondence with the cylinder holes are formed on the bottom surface of the first circular groove, water inlet through holes which are communicated with the first circular groove and the corresponding cylinder holes are formed on the first bosses, and a water inlet one-way valve mechanism is arranged in each water inlet through hole;
a plurality of second bosses which are in one-to-one correspondence with the cylinder holes are formed on the bottom surface of the second circular groove, water outlet through holes which are communicated with the second circular groove and the corresponding cylinder holes are formed on the second bosses, and a water outlet one-way valve mechanism is arranged in each water outlet through hole;
and a water inlet connector communicated with the first circular groove and a water outlet connector communicated with the second circular groove are formed on the outer wall of the shell.
The driving mechanism comprises T-shaped push rods fixedly connected with the pistons one by one, the inner ends of the T-shaped push rods are pressed against the outer wall of a cam, the cam is arranged in the middle of the cylinder body and fixed on a motor shaft of a motor, and the motor is fixed on the upper sealing cover;
and a spring fixing seat is fixed at the inner end of each cylinder hole, the spring fixing seat is fixed with one end of a tension spring, and the other end of the tension spring is fixedly connected with the corresponding piston.
A guide groove which penetrates through the spring fixing seat up and down is formed at the inner end of the spring fixing seat, and an inner end rod of the T-shaped push rod is inserted and sleeved in the guide groove;
the inner of the spring fixing seat is also formed with a cam abdicating groove which is arranged in a way of crossing with the guide groove.
The upper end inner wall of cylinder body mounting hole is gone up the shaping and is had the bulge loop, the shaping has the bellied boss of upwards on the lower sealing cover, the cylinder body centre gripping is between bulge loop and boss.
Two limiting holes are formed in the convex ring, two threaded holes which are coaxial with the two limiting holes are formed in the cylinder body respectively, positioning screws are screwed in the threaded holes, limiting rods are formed at the end portions of the positioning screws, and the limiting rods are inserted in the limiting holes.
The water inlet through hole is a stepped hole with a large outer part and a small inner part;
the water inlet one-way valve mechanism comprises a valve seat fixed in a large end hole of the water inlet through hole, a first taper hole and a water through hole which are large in inside and small in outside are formed in the valve seat, a first ejector bead is pressed on a taper wall of the first taper hole, and a first pressure spring is clamped between the first ejector bead and a step surface of the water inlet through hole.
The water outlet through hole comprises a small inner end hole, a middle taper hole and a large outer end hole;
the water outlet one-way valve mechanism comprises a spring support plate fixed in a large hole at the outer end of the water outlet through hole and a second pressing bead pressed on a middle taper hole of the water outlet through hole, a second pressure spring is clamped between the second pressing bead and the spring support plate, and a plurality of water passing holes are formed in the spring support plate.
The upper end and the lower end of the cam are respectively formed with cam shafts which are coaxially arranged, and the two cam shafts are respectively hinged on the upper sealing cover and the lower sealing cover.
The invention has the following outstanding effects: compared with the prior art, each part is designed in a split type, and the internal structure is simple and convenient to maintain; meanwhile, the pressure of the output water can be ensured while the requirement on large flow is met, and the structure is stable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view of FIG. 2 taken about A-A;
FIG. 4 is a cross-sectional view of FIG. 2 taken about B-B;
fig. 5 is a cross-sectional view of fig. 2 taken about C-C.
Detailed Description
In the embodiment, as shown in fig. 1 to 5, a small household water pump comprises a housing 1, an upper sealing cover 2, a lower sealing cover 3, a cylinder 4 and a piston 5, wherein a first circular groove 11 with an open upper side and a second circular groove 12 with an open lower side are formed on the outer edge of the housing 1, the upper sealing cover 2 is inserted into the upper end of the first circular groove 11, the lower sealing cover 3 is inserted into the lower end of the second circular groove 12, and the upper sealing cover 2 and the lower sealing cover 3 are fixedly connected through bolts; a cylinder body mounting hole 100 is formed in the middle of the shell 1, and the cylinder body 4 is annular and is inserted in the cylinder body mounting hole 100; a plurality of cylinder holes 41 which penetrate through the cylinder block 4 in the radial direction are formed in the cylinder block; the piston 5 is matched with the cylinder hole 41 and is inserted and sleeved in the cylinder hole 41, and the piston 5 is provided with a driving mechanism 6 for driving the piston to do radial reciprocating motion;
a plurality of first bosses 13 which are in one-to-one correspondence with the cylinder holes 41 are formed on the bottom surface of the first circular groove 11, water inlet through holes 14 which are communicated with the first circular groove 11 and the corresponding cylinder holes 41 are formed on the first bosses 13, and a water inlet one-way valve mechanism 7 is arranged in the water inlet through holes 14;
a plurality of second bosses 15 which are in one-to-one correspondence with the cylinder holes 41 are formed on the bottom surface of the second circular groove 12, water outlet through holes 16 which are communicated with the second circular groove 12 and the corresponding cylinder holes 41 are formed on the second bosses 15, and water outlet one-way valve mechanisms 8 are arranged in the water outlet through holes 16;
and a water inlet connecting port 17 communicated with the first circular groove 11 and a water outlet connecting port 18 communicated with the second circular groove 12 are formed on the outer wall of the shell 1.
More specifically, the driving mechanism 6 comprises T-shaped push rods 61 fixedly connected with the plurality of pistons 5 one by one, the inner ends of the T-shaped push rods 61 are pressed against the outer wall of the cam 62, the cam 62 is arranged in the middle of the cylinder 4, the cam 62 is fixed on the motor shaft of the motor 63, and the motor 63 is fixed on the upper sealing cover 2;
a spring fixing seat 64 is fixed at the inner end of each cylinder hole 41, the spring fixing seat 64 is fixed with one end of a tension spring 65, and the other end of the tension spring 65 is fixedly connected with the corresponding piston 5.
Furthermore, a guide groove 641 which penetrates through the spring fixing seat 64 up and down is formed at the inner end of the spring fixing seat, and the inner end rod of the t-shaped push rod 61 is inserted and sleeved in the guide groove 641;
the inner end of the spring fixing seat 64 is further formed with a cam avoiding groove 642 crossing the guide groove 641.
Further, a protruding ring 19 is formed on an inner wall of an upper end of the cylinder mounting hole 13, an upwardly protruding boss 31 is formed on the lower sealing cover 3, and the cylinder 4 is held between the protruding ring 19 and the boss 31.
Furthermore, two limiting holes 10 are formed in the convex ring 19, two threaded holes 42 which are coaxially arranged with the two limiting holes 10 are formed in the cylinder body 4, the positioning screws 9 are screwed in the threaded holes 42, limiting rods 91 are formed at the end portions of the positioning screws 9, and the limiting rods 91 are inserted in the limiting holes 10.
Furthermore, the water inlet through hole 14 is a stepped hole with a large outer part and a small inner part;
the water inlet one-way valve mechanism 7 comprises a valve seat 71 fixed in a large end hole of the water inlet through hole 14, a first taper hole 72 with a large inner part and a small outer part and a water through hole 73 are formed in the valve seat 71, a first top bead 74 is pressed on a taper wall of the first taper hole 72, and a first pressure spring 75 is clamped between the first top bead 74 and a step surface of the water inlet through hole 14.
Furthermore, the water outlet through hole 16 comprises a small inner end hole, a middle taper hole and a large outer end hole;
the water outlet one-way valve mechanism 8 comprises a spring support plate 81 fixed in a large hole at the outer end of the water outlet through hole 16 and a second top bead 82 pressed on a middle taper hole of the water outlet through hole 16, a second pressure spring 83 is clamped between the second top bead 82 and the spring support plate 81, and a plurality of water passing holes 84 are formed in the spring support plate 81.
Further, the upper end and the lower end of the cam 62 are respectively formed with a cam shaft 621 coaxially disposed, and the two cam shafts 621 are respectively hinged to the upper seal cover 2 and the lower seal cover 3.
The working principle is as follows: the water inlet connector 17 is connected with one end of an external water inlet pipe, and the other end of the water inlet pipe is connected with a water source; the water outlet connector 18 is connected with one end of an external water outlet pipe, and the other end of the water outlet pipe extends to a place where water is needed;
the motor 63 drives the cam 62 to rotate, the convex end of the cam 62 can drive the T-shaped push rod 61 to move outwards, the T-shaped push rod 61 drives the piston to move outwards, when the convex end of the cam 62 is separated from the T-shaped push rod 61, one end of the piston is reset under the action of the tension spring 65, and the piston 5 drives the T-shaped push rod 61 to move inwards and reset; thereby driving the piston to do radial reciprocating motion through the continuous rotation of the cam 62 and the action of the tension spring;
when the piston moves inwards, the pressure of a cavity formed by the inner walls of the piston 5, the cylinder hole 41 and the cylinder body mounting hole is reduced, the first ejector bead 74 moves inwards to be separated from the first conical hole 72, and water entering the first circular groove 11 from the water inlet pipe enters the cavity formed by the inner walls of the piston 5, the cylinder hole 41 and the cylinder body mounting hole from the water inlet through hole 14; when the piston moves outwards, the piston compresses water in a cavity formed by the inner walls of the piston 5, the cylinder hole 41 and the cylinder body mounting hole, the second ejector bead 82 is ejected away from a middle taper hole of the water outlet through hole 16 by the water in the cavity formed by the inner walls of the piston 5, the cylinder hole 41 and the cylinder body mounting hole, and the water in the cavity formed by the inner walls of the piston 5, the cylinder hole 41 and the cylinder body mounting hole flows into the second circular groove 12 from the water outlet through hole 16 and is then discharged from the water outlet connecting port 18 and the water outlet pipe;
because its inner structure only has piston 5, T type push rod 61 and cam 62, its simple structure is difficult to break down, and upper end cover and lower end cover pass through bolted connection, convenient dismantlement.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (6)
1. The utility model provides a small-size domestic suction pump, includes casing (1), upper seal lid (2), lower sealing cover (3), cylinder body (4) and piston (5), its characterized in that: a first circular groove (11) with an opening at the upper side and a second circular groove (12) with an opening at the lower side are formed in the outer edge of the shell (1), the upper sealing cover (2) is inserted and sleeved at the upper end of the first circular groove (11), the lower sealing cover (3) is inserted and sleeved at the lower end of the second circular groove (12), and the upper sealing cover (2) and the lower sealing cover (3) are fixedly connected through bolts; a cylinder body mounting hole (100) is formed in the middle of the shell (1), and the cylinder body (4) is annular and is inserted in the cylinder body mounting hole (100); a plurality of cylinder holes (41) which penetrate through the cylinder body (4) in the radial direction are formed in the cylinder body; the piston (5) is matched with the cylinder hole (41) and is inserted and sleeved in the cylinder hole (41), and the piston (5) is provided with a driving mechanism (6) for driving the piston to do radial reciprocating motion;
a plurality of first bosses (13) which are in one-to-one correspondence with the cylinder holes (41) are formed on the bottom surface of the first circular groove (11), water inlet through holes (14) which are communicated with the first circular groove (11) and the corresponding cylinder holes (41) are formed on the first bosses (13), and water inlet one-way valve mechanisms (7) are arranged in the water inlet through holes (14);
a plurality of second bosses (15) which are in one-to-one correspondence with the cylinder holes (41) are formed on the bottom surface of the second circular groove (12), water outlet through holes (16) which communicate the second circular groove (12) with the corresponding cylinder holes (41) are formed on the second bosses (15), and water outlet one-way valve mechanisms (8) are arranged in the water outlet through holes (16);
a water inlet connecting port (17) communicated with the first circular groove (11) and a water outlet connecting port (18) communicated with the second circular groove (12) are formed in the outer wall of the shell (1);
the water inlet through hole (14) is a stepped hole with a large outer part and a small inner part;
the water inlet one-way valve mechanism (7) comprises a valve seat (71) fixed in a large end hole of the water inlet through hole (14), a first taper hole (72) with a large inner part and a small outer part and a water through hole (73) are formed in the valve seat (71), a first ejector bead (74) is pressed on a taper wall of the first taper hole (72), and a first pressure spring (75) is clamped between the first ejector bead (74) and a step surface of the water inlet through hole (14);
the water outlet through hole (16) comprises an inner end small hole, a middle taper hole and an outer end large hole;
go out water check valve mechanism (8) including fix spring support plate (81) in the outer end macropore of a water through-hole (16) and press second top pearl (82) on the middle taper hole of a water through-hole (16), second top pearl (82) and spring support plate (81) between the centre clamp have second pressure spring (83), the shaping has a plurality of water holes (84) of crossing on spring support plate (81).
2. A small household pump as claimed in claim 1, wherein: the driving mechanism (6) comprises T-shaped push rods (61) fixedly connected with the pistons (5) one by one, the inner ends of the T-shaped push rods (61) are pressed against the outer wall of a cam (62), the cam (62) is arranged in the middle of the cylinder body (4), the cam (62) is fixed on a motor shaft of a motor (63), and the motor (63) is fixed on the upper sealing cover (2);
the inner end of each cylinder hole (41) is fixedly provided with a spring fixing seat (64), the spring fixing seat (64) is fixed with one end of a tension spring (65), and the other end of the tension spring (65) is fixedly connected with the corresponding piston (5).
3. A small household water pump as claimed in claim 2, further comprising: a guide groove (641) which penetrates through the spring fixing seat (64) up and down is formed at the inner end of the spring fixing seat, and an inner end rod of the T-shaped push rod (61) is inserted in the guide groove (641);
the inner end of the spring fixing seat (64) is also formed with a cam abdicating groove (642) which is crosswise arranged with the guide groove (641).
4. A small household pump as claimed in claim 1, wherein: the upper end inner wall of the cylinder body mounting hole (100) is formed with a convex ring (19), the lower sealing cover (3) is formed with a boss (31) protruding upwards, and the cylinder body (4) is clamped between the convex ring (19) and the boss (31).
5. A small household suction pump according to claim 4, characterized in that: the hydraulic cylinder is characterized in that two limiting holes (10) are formed in the convex ring (19), two threaded holes (42) which are coaxially arranged with the two limiting holes (10) are formed in the cylinder body (4), positioning screws (9) are screwed in the threaded holes (42), limiting rods (91) are formed at the end portions of the positioning screws (9), and the limiting rods (91) are inserted in the limiting holes (10).
6. A small household pump as claimed in claim 2, wherein: the upper end and the lower end of the cam (62) are respectively formed with a cam shaft (621) which is coaxially arranged, and the two cam shafts (621) are respectively hinged on the upper sealing cover (2) and the lower sealing cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746977.3A CN111852811B (en) | 2020-07-29 | 2020-07-29 | Small-size domestic suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746977.3A CN111852811B (en) | 2020-07-29 | 2020-07-29 | Small-size domestic suction pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111852811A CN111852811A (en) | 2020-10-30 |
| CN111852811B true CN111852811B (en) | 2022-11-04 |
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ID=72945361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010746977.3A Active CN111852811B (en) | 2020-07-29 | 2020-07-29 | Small-size domestic suction pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852811B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115539341B (en) * | 2022-10-31 | 2023-07-04 | 宁波钱湖石油设备有限公司 | Modularized reciprocating pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681741A (en) * | 1992-04-27 | 1994-03-22 | Elasis Sistema Ric Fiat Nel Mezzogiorno Soc Consortile Per Azioni | Radial piston pump for internal combusion engine fuel |
| US7300260B1 (en) * | 2003-10-31 | 2007-11-27 | Sauer-Danfoss Inc. | Special fluids for use in a hydrostatic transmission |
| CN105715473A (en) * | 2016-04-01 | 2016-06-29 | 郑州科技学院 | Multi-cylinder high-pressure radial plunger pump |
| CN110017255A (en) * | 2019-04-25 | 2019-07-16 | 南昌大学 | A kind of novel external curve plunger pump |
| CN211116443U (en) * | 2019-12-02 | 2020-07-28 | 无锡市晟瑞机械电子有限公司 | Radial plunger pump convenient to maintain |
-
2020
- 2020-07-29 CN CN202010746977.3A patent/CN111852811B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681741A (en) * | 1992-04-27 | 1994-03-22 | Elasis Sistema Ric Fiat Nel Mezzogiorno Soc Consortile Per Azioni | Radial piston pump for internal combusion engine fuel |
| US7300260B1 (en) * | 2003-10-31 | 2007-11-27 | Sauer-Danfoss Inc. | Special fluids for use in a hydrostatic transmission |
| CN105715473A (en) * | 2016-04-01 | 2016-06-29 | 郑州科技学院 | Multi-cylinder high-pressure radial plunger pump |
| CN110017255A (en) * | 2019-04-25 | 2019-07-16 | 南昌大学 | A kind of novel external curve plunger pump |
| CN211116443U (en) * | 2019-12-02 | 2020-07-28 | 无锡市晟瑞机械电子有限公司 | Radial plunger pump convenient to maintain |
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|---|---|
| CN111852811A (en) | 2020-10-30 |
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Effective date of registration: 20221014 Address after: Room 3011-2, Unit 4, Building 412, Hengsheng Garden, No. 399, Xiongzhou South Road, Longchi Street, Liuhe District, Nanjing City, Jiangsu Province, 210000 Applicant after: Nanjing Jiancheng Environmental Engineering Co.,Ltd. Address before: 341003 floor 3, No. 1, zhubajie Ganzhou Park, No. 169, Xiangjiang Avenue, Ganzhou economic and Technological Development Zone, Ganzhou City, Jiangxi Province Applicant before: Ganzhou Wenyu Technology Co.,Ltd. |
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