CN101413493A - Constant pressure variable radial piston pump - Google Patents

Constant pressure variable radial piston pump Download PDF

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Publication number
CN101413493A
CN101413493A CNA2008101536133A CN200810153613A CN101413493A CN 101413493 A CN101413493 A CN 101413493A CN A2008101536133 A CNA2008101536133 A CN A2008101536133A CN 200810153613 A CN200810153613 A CN 200810153613A CN 101413493 A CN101413493 A CN 101413493A
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CN
China
Prior art keywords
plunger
rod
pintle
stator
rotor
Prior art date
Application number
CNA2008101536133A
Other languages
Chinese (zh)
Inventor
董桂敏
Original Assignee
董桂敏
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 董桂敏 filed Critical 董桂敏
Priority to CNA2008101536133A priority Critical patent/CN101413493A/en
Publication of CN101413493A publication Critical patent/CN101413493A/en

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Abstract

The invention relates to a constant-pressure variable radial plunger pump. The inner bore of a pump case is a long circle; an annular stator is in sliding fit with the pump case, two sides of the inner circle of the stator are in movable fit with a return stroke ring respectively, and the return stroke ring adopts ZQA19-4 albronze; a rotor is freely sleeved on a pintle valve, plungers are evenly distributed in the radial direction of the rotor, inner bores of the plungers are provided with wide annular grooves with the width of 2.2 mm, and clamp springs with the diameter of 2.1 mm are arranged in the grooves, so as to increase locking force to a connecting rod ball; a cambered disc surface of a connecting rod is additionally provided with an annular groove B for storing oil, and oil film is generated when the annular groove B rotates at a high speed, so as to improve the lubricating performance and have good wearing resistance; the pintle valve is provided with a sealed annular groove A in the axial direction and provided with five oil storage holes respectively on the side of a V-shaped groove, and oil film is generated when the annular groove A rotates, so as to improve the lubricating performance. The constant-pressure variable radial plunger pump has the advantages of simple structure, small volume, low noise, large locking force of the clamp springs, no disengagement of the plungers and the connecting rod, and high lubricating performance and wearing resistance of parts; and the return stroke ring adopts the ZQA19-4 albronze and has strong wearing resistance, so the whole service life is long.

Description

Constant-pressure variable radial-plunger pump
Technical field
The present invention relates to a kind of plunger pump, particularly relate to a kind of high speed, low noise, long service life and constant-pressure variable radial-plunger pump simple in structure.
Background technique
As everyone knows, along with the fast development of modern industrial technology, more and more higher to the requirement of hydraulic industry, as hydraulicdriven dynamical element-plunger pump, its development trend is a speed up, high-pressure trend, big capacity, low noise, long service life and electromechanical integration, at present, the backhaul ring on the external radial plunger pump that uses adopts composite material more, the price height does not meet that national conditions are domestic to be difficult to find; The circular groove that plunger inside has is narrow, and jump ring is little, so coupling mechanism force is not enough, and the jump ring card does not live connecting rod, and causes connecting rod to come off from plunger hole, has a strong impact on the normal operation of pump.
Summary of the invention
Main purpose of the present invention be to overcome above deficiency and provide that a kind of high speed, low noise, lubricating condition are good, long service life and constant-pressure variable radial-plunger pump simple in structure.
The technical solution adopted for the present invention to solve the technical problems is: it comprises with the bottom:
1.. endoporus is oblong pump case;
2.. stationary torus and pump case sliding fit, the interior round both sides of stator cooperate with the backhaul gyration respectively;
3.. the rotor sky is enclosed within on the pintle, the plunger hole that radially evenly distributes at rotor, plunger is housed in the hole, the endoporus of plunger is equipped with connecting rod, and an end of connecting rod is spherical, and its sphere bottom the plunger endoporus matches, the center of connecting rod has the throttling through hole, the other end of connecting rod is an arc, and bi-side have curve bath, and two curve baths are stuck on two backhaul rings;
4.. transmission shaft is supported on the pump cover, and an end of transmission shaft is connected with shaft coupling with spline, has the projection that is mutually cross respectively on side of rotor and the shaft coupling, and crosshead shoe is stuck on the projection;
5.. pintle symmetrical position place vertically has the assignment hole that four one ends are shut, on the pintle near the end perpendicular to the axial direction perforate, and have two V-shaped grooves that are mutually 180 ° at this place;
6.. the two ends of pump case are with the pintle axis normal and aim at the position of stator place and be fixed with big control plunger and little control plunger respectively, the two ends that they withstand stator respectively by A slide block and B slide block respectively, the A slide block is identical with the radian of stator with the radian of B slide block one end, big control plunger side is fixed with manual constant-pressure variable valve, it regulates oil pressure by valve rod, spring, regulate the big position of controlling plunger and A slide block by inner spool, little control plunger is regulated by screw rod and limited cover;
It is characterized in that:
1.. the backhaul ring adopts ZQA19-4 aluminum bronze;
2.. a pintle end vertically has sealed annular groove A perpendicular to axial direction, and having the V-shaped groove sidetracking on pintle has each five oil storage hole;
3.. have the wide wide shape circular groove of 2.2mm on the plunger, in put Jump ring;
4.. the arc card of connecting rod has the B circular groove of oil storage in addition, and at arcuate surface spraying oiling agent.
Advantage and good effect that the present invention has are: simple in structure, volume is little, noise is low, adopt wide shape circular groove on the plunger, then the coupling mechanism force of jump ring strengthens in the groove, and plunger and connecting rod can not thrown off, the position of pintle and connecting rod finishing bathtray is reasonable, improved the wear resistance of greasy property and part, the backhaul ring adopts ZQA19-4 aluminum bronze, and wear resistance is strong, whole service life is long, the efficient height, the rated pressure height, variable is simple to operate, because damping function forms back pressure, and reducing noise and shock-resistant, stable working can realize constant voltage, cost is low, energy-efficient, applied range can be widely used in large-scale engineering machinery, farm machinery, metallurgical machinery, in the multiple hydraulic equipment such as metal forming machinery.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is I-I sectional structure schematic representation of Fig. 1;
Fig. 3 is the structure enlarged diagram of plunger 6;
Fig. 4 is the structural representation of pintle 5;
Fig. 5 is A-A cross-sectional schematic of Fig. 4;
Fig. 6 is the structural representation of connecting rod 7;
Fig. 7 is the schematic top plan view of Fig. 6.
Among Fig. 1-Fig. 7: 1. pump case, 2. stator, 3. backhaul ring, 4. rotor, 5. pintle, 6. plunger, 7. connecting rod, 8. transmission shaft, 9. pump cover, 10. shaft coupling, 11. crosshead shoes, 12.V shape groove, 13. control plunger greatly, 14. little control plungers, 15.A slide block, 16.B slide block, 17. manual constant-pressure variable valves, 18. inner spools, 19. screw rod, 20. limited cover, 21.A circular groove, 22. oil storage holes, 23. wide shape circular groove, 24. jump ring, 25.B circular groove, 26. big spring mandrels.
Embodiment
For further understanding summary of the invention characteristics of the present invention and effect following examples for example now, and conjunction with figs. is described in detail as follows, and sees also Fig. 1-Fig. 7.
As Fig. 1-shown in Figure 3: the present invention mainly by pump case 1, stator 2, backhaul ring 3, rotor 4, pintle 5, plunger 6, connecting rod 7, transmission shaft 8, pump cover 12, shaft coupling 13, crosshead shoe 14, greatly control plunger 16, little control plunger 17, A slide block 18 and B slide block 19, manually constant-pressure variable valve 20 is formed, pump case 1 endoporus is a long-round-shape; Stationary torus 2 and pump case 1 sliding fit, the interior round both sides of stator 2 respectively with backhaul ring 3 movingly, backhaul ring 3 adopts ZQA19-4 aluminum bronzes, main chemical compositions is: Cu=87.34%, Zn=0.05%, Pb=0.077%, Fe=3.90%, Al=8.38%, Mn=0.061%, wear resistance is good, the cost performance height, bought easily at home, used this kind material to tally with the national condition; Rotor 4 skies are enclosed within on the pintle 5, and the plunger hole that radially evenly distributes at rotor 4 is equipped with plunger 6 in the hole, and the endoporus of plunger 6 is equipped with connecting rod 7, and as shown in Figure 3: the cooperation place of plunger 6 endoporus and connecting rod 7 has the wide wide shape circular groove 23 of 2.2mm, in put Jump ring 24, adopt wide shape circular groove 23 increased with connecting rod 7 on the coupling mechanism force of bulb, plunger 6 and connecting rod 7 are thrown off, guaranteed the normal operation of pump; As Fig. 6, shown in Figure 7: an end of connecting rod 7 is spherical, the sphere of it and plunger 6 endoporus bottom matches, and the center of connecting rod 7 has the throttling through hole, and the other end of connecting rod 7 is an arc, bi-side have curve bath, two curve baths are stuck on two backhaul rings 3, and the arc card of connecting rod 7 has the B circular groove 25 of oil storage in addition, when running up, produce oil film, simultaneously spray a certain amount of oiling agent at arcuate surface, good because of greasy property, and improved wear resistance; Transmission shaft 8 is supported on the pump cover 9, and an end of transmission shaft 8 is connected with shaft coupling 10 with spline, has the projection that is mutually cross respectively on side of rotor 4 and the shaft coupling 10, and crosshead shoe 11 is stuck on the projection; Pintle 5 symmetrical position place vertically has the assignment hole that four one ends are shut, as Fig. 4, shown in Figure 5: pintle 5 end vertically has sealed annular groove A 21 perpendicular to axial direction, on pintle 5, have V-shaped groove 12 sidetrackings each five oil storage hole 22 is arranged, when running up, produce oil film, improved greasy property greatly; The two ends of pump case 1 are with pintle 5 axis normal and aim at stator 2 positions and be fixed with big control plunger 13 and little control plunger 14 respectively, the two ends that they withstand stator 2 respectively by A slide block 15 and B slide block 16 respectively, A slide block 15 is identical with the radian of stator 2 with the radian of B slide block 16 1 ends, big control plunger 13 sides are fixed with manual constant-pressure variable valve 17, it regulates oil pressure by valve rod, spring, regulate the big position of controlling plunger 13 and A slide block 15 by inner spool 18, little control plunger 14 is regulated by screw rod 19 and limited cover 20;
During work, as Fig. 1-shown in Figure 7: when rotor 4 rotations, hydraulic oil enters the pump housing from inlet, two low pressure assignment holes on pintle 5 suck in the plunger hole, at this moment, the ascending oil-absorbing process of finishing of stroke of 7 plungers 6 and plunger hole, when 7 plungers 6 and the stroke of plunger hole are descending, push hydraulic oil and form high pressure oil, slowly discharge high pressure by two V-shaped grooves on the pintle 5 12, two other high pressure assignment hole that high pressure oil is pressed on the pintle 5 is also discharged, finish the oil extraction process; Have four assignment holes on the pintle 5, wherein two low pressure assignment holes provide low pressure oil for plunger 6 oil suctions, and two other when plunger 6 is pressed oil, exports high-pressure and hydraulic oil at the high pressure assignment hole.A circular groove that four distances that the outer surface of pintle 5 have vertically do not wait 21 and have each five oil storage hole 22 that V-shaped groove 12 sidetrackings have and provide oil storage for lubricated, when rotor high-speed turns round, can produce oil film at rotor 4 and 5 of pintles, add upper rotor part 4 endoporus and spray a certain amount of oiling agent and two V-shaped grooves 12 slow release high pressure, thereby avoided rotor 4 and pintle 5 asphyxias by external pressure on the chest and abdomen or seize.Before the work, earlier regulate the bolt and nut on the manual constant-pressure variable valve 20 fixing, the regulating and controlling amount of spring compression is fixed, the pressure of hydraulic oil that has overcome spring force is constant relatively, if when the pressure that reflects on the test stand and authorized pressure are inconsistent, continue the Regulation spring decrement till meeting the demands, in the operation process, in case the hydraulic fluid pressure of hyperbaric chamber raises suddenly, it is big to promote stator 2 extruding, little control plunger 13,14 cause the stator 2 and the throw of eccentric of rotor 4 to diminish, at this moment, the hydraulic oil output flow of pump diminishes, meanwhile, promoting big spring mandrel 26 diminishes throttle orifice, manually the inner spool on the constant-pressure variable valve 17 18 is outer moves and opens the draining hole and make that oil pressure reduces in the chamber, and reaches the purpose of constant voltage, and vice versa.In a word, entire work process is to guarantee constant voltage by the changes in flow rate that moment changes hydraulic oil, and this variable operation is very simple.
Its advantage is: simple in structure, volume is little, and noise is low, adopts wide shape cannelure, then groove on the plunger The coupling mechanism force of interior jump ring strengthens, and plunger and connecting rod can not thrown off, and close the position of pintle and connecting rod finishing bathtray Manage, improved the wearability of greasy property and part, return ring adopts ZQA19-4 aluminium bronze, and is wear-resisting The property strong, whole service life is long, the efficient height, the rated pressure height, variable is simple to operate, because damping is done With the formation back pressure, and noise decrease and shock-resistant, stable working can realize constant voltage, cost is low, and is efficient Energy-conservation, applied range can be widely used in large-scale engineering machinery, agricultural machinery, metallurgical machinery, forging In the multiple hydraulic test such as press mechanical pressing.

Claims (1)

1. constant-pressure variable radial-plunger pump, it comprises with the bottom:
1.. endoporus is oblong pump case (1);
2.. stationary torus (2) and pump case (1) sliding fit, the interior round both sides of stator (2) respectively with backhaul ring (3) movingly;
3.. rotor (4) sky is enclosed within on the pintle (5), the plunger hole that radially evenly distributes at rotor (4), plunger (6) is housed in the hole, the endoporus of plunger (6) is equipped with connecting rod (7), and an end of connecting rod (7) is spherical, and its sphere bottom plunger (6) endoporus matches, the center of connecting rod (7) has the throttling through hole, the other end of connecting rod (7) is an arc, and bi-side have curve bath, and two curve baths are stuck on two backhaul rings (3);
4.. transmission shaft (8) is supported on the pump cover (9), and an end of transmission shaft (8) is connected with shaft coupling (10) with spline, has the projection that is mutually cross respectively on side of rotor (4) and the shaft coupling (10), and crosshead shoe (11) is stuck on the projection;
5.. pintle (5) symmetrical position place vertically has the assignment hole that four one ends are shut, and pintle (5) is gone up close end perpendicular to the axial direction perforate, and has two V-shaped grooves (12) that are mutually 180 ° at this place;
6.. the two ends of pump case (1) are with pintle (5) axis normal and aim at stator (2) position and be fixed with big control plunger (13) and little control plunger (14) respectively, and they are respectively by the A slide block
(15) and B slide block (16) withstand the two ends of stator (2), A slide block (15) and B slide block respectively
The radian of (16) one ends is identical with the radian of stator (2), big control plunger (13) side is fixed with manual constant-pressure variable valve (17), it regulates oil pressure by valve rod, spring, regulate the big position of controlling plunger (13) and A slide block (15) by inner spool (18), little control plunger (14) is regulated by screw rod (19) and limited cover (20);
It is characterized in that:
1.. backhaul ring (3) adopts ZQA19-4 aluminum bronze;
2.. pintle (a 5) end vertically has sealed annular groove A (21) perpendicular to axial direction, and having V-shaped groove (12) sidetracking on pintle (5) has each five oil storage hole (22);
3.. have the wide wide shape circular groove (23) of 2.2mm on the plunger (6), in put Jump ring (24);
4.. the arc card of connecting rod (7) has the B circular groove (25) of oil storage in addition.
CNA2008101536133A 2008-11-28 2008-11-28 Constant pressure variable radial piston pump CN101413493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNA2008101536133A CN101413493A (en) 2008-11-28 2008-11-28 Constant pressure variable radial piston pump

Publications (1)

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CN101413493A true CN101413493A (en) 2009-04-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871442A (en) * 2010-06-23 2010-10-27 余文凌 Radial plunger high-pressure water pump
CN102284865A (en) * 2011-06-21 2011-12-21 浙江劳伦斯机床有限公司 Static pressure guide rail with pressure reducing oil grooves
CN103591009A (en) * 2013-09-11 2014-02-19 昆山新金福精密电子有限公司 Radial piston pump pintle valve
CN104389754A (en) * 2014-09-17 2015-03-04 西安交通大学 Hydraulic compensated radial plunger pump adopting manner of valve plate flow distribution
CN105626506A (en) * 2016-02-20 2016-06-01 杭州佳巨机械配件有限公司 Connector of plunger pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871442A (en) * 2010-06-23 2010-10-27 余文凌 Radial plunger high-pressure water pump
CN102284865A (en) * 2011-06-21 2011-12-21 浙江劳伦斯机床有限公司 Static pressure guide rail with pressure reducing oil grooves
CN103591009A (en) * 2013-09-11 2014-02-19 昆山新金福精密电子有限公司 Radial piston pump pintle valve
CN104389754A (en) * 2014-09-17 2015-03-04 西安交通大学 Hydraulic compensated radial plunger pump adopting manner of valve plate flow distribution
CN104389754B (en) * 2014-09-17 2015-12-02 西安交通大学 A kind of compensation hydraulic formula radial plunger pump of end face oil distributing
CN105626506A (en) * 2016-02-20 2016-06-01 杭州佳巨机械配件有限公司 Connector of plunger pump

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Open date: 20090422

C02 Deemed withdrawal of patent application after publication (patent law 2001)