CN201187424Y

CN201187424Y - Large-scale radial plunger pump

Info

Publication number: CN201187424Y
Application number: CNU2008200744312U
Authority: CN
Inventors: 董桂敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-16
Filing date: 2008-04-16
Publication date: 2009-01-28
Anticipated expiration: 2018-04-16

Abstract

The utility model relates to a large-scale radial plunger pump. An inner cavity of a pump barrel takes the shape of a long circle; a rotor is freely sleeved on a pintle valve; return trace rings are arranged on two sides of a stator and form a working fit with the stator; the rotor is freely sleeved on the pintle valve, nine plunger holes are provided along the radial direction, a link assembly is arranged in the holes, a clip spring clamps a plunger and a connecting bar, and the connecting bar is clamped on a lug boss of the two return trace rings; four elongated slots on a cross slide-block is utilized to connect the rotor and a transmission shaft together; a central through-hole and six dead holes with different sizes are opened on the pintle valve which is provided with a big V-shaped groove and a small V-shaped groove, and three oil sinks with unequal distances as well as two semicircular grooves with four through-holes are opened on the pintle valve along the axial direction; a manual constant voltage regulating valve is fixed on the large-scale radial plunger pump and is provided with a hole with a taper angle; a valve core and an inner valve core can move up and down; the oil pressure of the pump is regulated so as to ensure the constant voltage and the variable oil-discharge. The large-scale radial plunger pump has the advantages of constant pressure variable displacement, high speed, high pressure, large capacity, low noise, long service life, simple structure, high precision and smooth operation.

Description

Macrotype oilgear pump

Technical field

The utility model relates to a kind of plunger pump, particularly a kind of constant voltage, variable, jumbo macrotype oilgear pump.

Background technique

As everyone knows, hydraulicdriven dynamical element is an oil hydraulic pump, its development trend is speed up, high-pressure trend, big capacity, low noise, long lifetime and electromechanical integration, along with new structure, material, technology, microelectronic development, current traditional axial piston pump complex structure and bulky, noise is difficult to greatly achieve the above object, and homemade radial plunger pump is because of having adopted some contact friction pair, so speed is low, working life is short, radial dimension is bigger, and maximum speed and maximum pressure are lower, simultaneously, the radial force imbalance is so be difficult to promote.If the axial piston pump that adopts import is because complex structure, the complicated variable difficulty that realizes of stroking mechanism, use inconvenient, poor reliability, noise is big, working life is short, the cost height.

Summary of the invention

The utility model provides a kind of constant voltage, variable, big capacity, low noise macrotype oilgear pump for solving the technical problem that exists in the known technology.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: it comprises pump case, stator, rotor, backhaul ring, crosshead shoe, link assembly, shaft coupling, transmission shaft, pintle, size control plunger assembly and manual constant pressure valve, it is characterized in that:

(1). the two ends of pump case are fixed with big limit body assembly and little limit body assembly, the pump case inner chamber is a long-round-shape, in the big limit body assembly big control plunger assembly is housed, it is by big control plunger, big slide block and damping are stifled to be constituted, big control plunger assembly withstands in the hole of big limit body assembly by spring and shock absorbing seat, little control plunger assembly is housed in the little limit body assembly, it is by little control plunger, small slide block and damping are stifled to be constituted, the radian of big control plunger upper groove matches with the radian that big slide block one end protrudes, the radian that the radian of little control plunger upper groove and small slide block one end protrude matches, the groove radian of the big small slide block the other end should be consistent with stator cylindrical radian, big control plunger assembly and little control plunger assembly withstand on the both sides of stator respectively by spring, two stifled centers that are placed in big small slide block and size control plunger respectively of damping;

(2). stator is an annular, and the both sides of circle cooperate with the backhaul gyration respectively in its outer surface and the pump case internal surface sliding fit, stator;

(3). the rotor sky is enclosed within on the pintle, radially have nine plunger holes on the rotor, all be placed with link assembly in each plunger hole, link assembly is by plunger, connecting rod and jump ring are formed, the bottom of plunger endoporus is spherical, in the plunger endoporus connecting rod is housed, one end of connecting rod 18 is that spherical kissing merging spherical and bottom the plunger endoporus is blocked plunger and connecting rod with jump ring, the other end of connecting rod is a circular arc, the both sides of arc end have curve bath, have central through bore on the connecting rod, connecting rod is stuck on the boss of two backhaul rings, and the arc of curve bath should be consistent with the circular arc on the backhaul ring on the connecting rod;

(4). two A projections of transmission shaft left end directly insert in two grooves of crosshead shoe, the transmission shaft right-hand member has keyway, transmission shaft by bearings on pump cover, one end and the transmission shaft contacting point of pump cover have oil sealing, two A projections that have two B projections and transmission shaft on the rotor are orthogonal, have two B projections on the rotor and insert in two other grooves of crosshead shoe,, rotor and transmission shaft are connected together with having four elongated slots on the square crosshead shoe Vertical direction;

(5). have central through bore on the pintle, have five big and little totally six blind holes around it, distinguish perforate at two ends, the left and right sides perpendicular to axial direction near pintle, have the big V-shaped groove that is mutually 180 ° and be mutually little two V-shaped grooves of 180 ° at the tapping of right-hand member, on pintle, have vertically three not equidistant annular for oil groove and and the groove in two semi-circular four-way holes;

(6). the rear side vertical direction at macrotype oilgear pump is fixed with manual constant-pressure variable valve, be fixed with adjusting screw rod, spring, positioning rod, spool and inner spool on it and have the hole of being with wedge angle on valve body, spool and inner spool can move up and down and pressure spring.

The utility model can also adopt following technological scheme:

Described backhaul ring adopts fills the graphite PTFE;

The valve body of described pump case, pump cover, rotor, manual constant-pressure variable valve all adopts good spheroidal graphite cast iron of wear resistance and gray cast iron.

Advantage and the good effect that the utlity model has are: constant-pressure variable, at a high speed, high pressure, big capacity, low noise, long service life, simple in structure, precision is high, running is steady and applied range.

Description of drawings

Fig. 1 is a general assembly structural representation of the present utility model;

Fig. 2 is that the sectional structure schematic representation is looked on the left side of Fig. 1;

Fig. 3 controls plunger assembly 4 structural representations greatly;

Fig. 4 is little control plunger assembly 9 structural representations;

Fig. 5 is shock absorbing seat 8 structural representations;

Fig. 6 is the structural representation of damping stifled 7 and 12;

Fig. 7 is the plan structure schematic representation of Fig. 6;

Fig. 8 is backhaul ring 14 structural representations;

Fig. 9 is rotor 15 structural representations;

Figure 10 is the left TV structure schematic representation of Fig. 9;

Figure 11 is the structural representation of connecting rod 18;

Figure 12 is the left TV structure schematic representation of Figure 11;

Figure 13 is the plan structure schematic representation of Figure 11;

Figure 14 is the structural representation of transmission shaft 22;

Figure 15 is the left TV structure schematic representation of Figure 14;

Figure 16 is the structural representation of pump cover 25;

Figure 17 is the right TV structure schematic representation of Figure 16;

Figure 18 is the structural representation of pintle 16;

Figure 19 is the A-A sectional structure schematic representation of Figure 18;

Figure 20 is the B-B sectional structure schematic representation of Figure 18;

Figure 21 is the C-C sectional structure schematic representation of Figure 18;

Figure 22 is the D-D sectional structure schematic representation of Figure 20;

Figure 23 is that the Q of Figure 18 is to structural representation;

Figure 24 is that the E-E of Figure 18 amplifies the sectional structure schematic representation;

Figure 25 is that the F of Figure 18 is to enlarged diagram.

Figure 26 is the structural representation of manual constant-pressure variable valve 32.

Among Fig. 1-Figure 26: 1. pump case, 2. big limit body assembly, 3. little limit body assembly, 4. big control plunger assembly, 5. control plunger greatly, 6. big slide block, 7. damping is stifled, 8. shock absorbing seat, 9. little control plunger assembly, 10. little control plunger, 11. small slide blocks, 12. dampings are stifled, 13. stator, 14. backhaul rings, 15. rotors, 16. pintles, 17. plunger, 18. connecting rods, 19. jump rings, 20. circular arcs, 21. curve bath, 22. transmission shafts, 23.A projection, 24. crosshead shoe, 25. pump covers, 26.B projection, 27. big V-shaped groove, 28. little V-shaped grooves, 29. oil grooves, 30. through hole, 31. grooves, 32. manual constant-pressure variable valves, 33. adjusting screw rod, 34. springs, 35. positioning rods, 36. spool, 37. inner spools, the hole of 38. band wedge angles, 39. the oil spilling hole, 40. inclined holes, 41. oil outlets.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

(1). as Fig. 1, shown in Figure 2: pump case 1 is two halves up and down, be integral by big limit body assembly 2 and little limit body assembly 3 usefulness bolt, its inner chamber is a long-round-shape, to guarantee that stator 13 has certain mobile space therein, in the big limit body assembly 2 big control plunger assembly 4 is housed, as shown in Figure 3: control plunger assembly 4 greatly by big control plunger 5, big slide block 6 and damping stifled 7 constitute, big control plunger assembly 4 withstands in the hole of big limit body assembly 2 by spring and shock absorbing seat as shown in Figure 58, little control plunger assembly 9 is housed in the little limit body assembly 3, as shown in Figure 4: little control plunger assembly 9 is by little control plunger 10, small slide block 11 and damping stifled 12 constitutes, the radian of big control plunger 5 upper grooves matches with the radian that big slide block 6 one ends protrude, the radian that the radian of little control plunger 10 upper grooves and small slide block 11 1 ends protrude matches, big small slide block 6, the groove radian of 11 the other ends should be consistent with stator 13 cylindrical radians, contact with assurance face, make motion steadily, big control plunger assembly 4 and little control plunger assembly 9 withstand on the both sides of stator 13 respectively by spring, as Fig. 6,7 and 12 buffer functions are blocked up in damping shown in Figure 7, and they are placed in big small slide block 6 respectively, 11 and size control plunger 5,10 center;

(2). as shown in Figure 1 and Figure 2: stator 13 is an annular, in its outer surface and the pump case 1 internal surface sliding fit, stator 13 both sides of circle respectively with two backhaul rings 14 as shown in Figure 8 movingly, backhaul ring 14 adopts filling graphite PTFEs;

(3). as Fig. 1, Fig. 2, Fig. 9, shown in Figure 10: rotor 15 skies are enclosed within on the pintle 16, radially have 9 plunger holes on the rotor 15, all be placed with link assembly in each plunger hole, link assembly is by plunger 17, connecting rod 18 and jump ring 19 are formed, the bottom of plunger 17 endoporus is spherical, in plunger 17 endoporus connecting rod 18 is housed, one end of connecting rod 18 is that spherical kissings merging spherical and bottom plunger 17 endoporus are blocked plunger 17 and connecting rod 18 with jump ring 19, thereby guaranteed the flexibility of link assembly motion, the other end as the connecting rod 18 of Figure 11-shown in Figure 13 is a circular arc 20, the both sides of circular arc 20 ends have curve bath 21, have central through bore on the connecting rod 18 and make interior usefulness to play buffering, connecting rod 18 is stuck on the boss of two backhaul rings 14, the arc of curve bath 21 should be consistent with the circular arc on the backhaul ring 14 on the connecting rod 18, freely rotates on backhaul ring 14 to guarantee nine connecting rods 18;

(4). as Figure 14, shown in Figure 15: two A projections 23 of transmission shaft 22 left ends directly insert in two grooves of crosshead shoe 24, transmission shaft 22 right-hand members have keyway, transmission shaft 22 by bearings on pump cover 25, as Figure 16, shown in Figure 17: an end of pump cover 25 and transmission shaft 22 contacting points have oil sealing, it is orthogonal with two A projections of transmission shaft 22 to have two B projections 26 on the rotor 15, having two B projections 26 on the rotor 15 inserts in two other grooves of crosshead shoe 24, on square crosshead shoe 24 Vertical direction, have four elongated slots, it connects together rotor 15 and transmission shaft 22, and transmission shaft 22 has played the effect of shaft coupling;

(5). as Figure 18-shown in Figure 25: have central through bore on the pintle 16, have five big and little totally six blind holes around it, distinguish perforate at two ends, the left and right sides perpendicular to axial direction near pintle 16, tapping at right-hand member has big V-shaped groove 27 that is mutually 180 ° and little two V-shaped grooves 28 that are mutually 180 °, have three not grooves 31 for oil groove 29 and two semi-circular four through holes 30 of equidistant annular vertically on pintle 16 surfaces, when rotor high-speed turns round, can produce oil film at

rotor

15 and 16 of pintles, add upper rotor part 15 endoporus and be coated with a certain amount of oiling agent and each two V-shaped groove 27 of size, 28 can slowly discharge high pressure, thereby rotor 15 and pintle 16 asphyxias by external pressure on the chest and abdomen or seize have been avoided, as shown in figure 20: have six assignment holes on the pintle 16, wherein three the low pressure assignment holes in the left side provide low pressure oil for plunger 17 oil suctions, in addition, the right three (containing an aperture) is the high pressure assignment hole, the discharging high pressure oil;

(6). as shown in Figure 1: be fixed with as shown in figure 26 manual constant-pressure variable valve 32 at the rear side vertical direction of macrotype oilgear pump, be fixed with on it and regulate bolt 33, spring 34, positioning rod 35, spool 36 and inner spool 37 also have the hole 38 of being with wedge angle on valve body, spool 36 and inner spool 37 can move up and down pressure spring 34, what positioning rod 35 floated is placed in the inner spool 37, when the inclined hole 40 of high pressure oil from housing of the hyperbaric chamber hole 38 by the band wedge angle enters in the spool 36 of manual constant-pressure variable valve 32, and push inner spool 37 to downside, positioning rod 35 is along with decline, at this moment, the hydraulic coupling oil and the spring pressure balance of spool 36 inside, pressure oil one small part of 38 outsides, hole of band triangle works the effect of damming on spool 36 the flat face that mills enters oil spilling hole 39, to prevent oil shock, most of in addition pressure oil acts on the big control plunger 5 through oil outlet 41, push stator 13 to the maximum eccentric place, at this moment, macrotype oilgear pump is in peak rate of flow and pressure maximum work down; When system needs constant voltage and variable, change amount of spring compression with manual tune screw rod 33, carry out working pressure and set; When outside carry and to reach when setting working pressure, spool 36 interior oil pressure are greater than spring force, spool 36 moves up, and head on positioning rod 35 upwards until the hole 38 of confining zone triangle, at this moment, with reducing of pressure, make spool 36 in the work of new equilibrium position, and keep the pressure that sets.

Owing to there is overflow, the macrotype oilgear pump rate of discharge slightly reduces, and when load pressure was lower than setting pressure, then overflow stopped, and the discharge capacity of macrotype oilgear pump is constant.

When load increases, spool 36 moves hole 38 sealings of band triangle on further, big control plunger 5 oil pressure reduce, and stator 13 moves to reducing eccentric position under the promotion of little control plunger 10, is zero until throw of eccentric, flow is zero, and pressure keeps a little more than setting pressure.

The macrotype oilgear pump continuous operation, after work a period of time, when the pressure that reflects on test stand and the working pressure of regulation are inconsistent again, continue to regulate bolt 33, pressure spring 34, until with the regulation pressure consistent till, in the running, in case the oil pressure of hyperbaric chamber raises suddenly, certainly will promote the big control of stator 13 extruding plunger 5, and the stator 13 and the throw of eccentric of rotor 15 are diminished, at this moment, the hydraulic oil output quantity of macrotype oilgear pump also diminishes, meanwhile, manually move and open oil spilling hole 39 outside the inner spool 37 on the constant-pressure variable valve 32, the oil pressure in the hyperbaric chamber is reduced, and reach constant voltage, the purpose of variable, vice versa.

During work, when the rotor 15 of active chamber rotates in the pump case 1, low pressure oil enters pump case 1 from inlet, as shown in figure 20 three low pressure assignment holes in the left side suck in the plunger hole on pintle 16, at this moment, the ascending oil-absorbing process of finishing of stroke of nine plungers 17 and plunger hole, rotor 15 is rotated further, when nine plungers 17 and the stroke of plunger hole are descending, extruding low pressure oil and when forming high pressure oil, slowly discharge high pressure by two on the pintle 16 big V-shaped grooves 27 and two little V-shaped grooves 28, and high pressure oil is pressed into three high pressure assignment holes in pintle 16 the right as shown in figure 20 (wherein have a hole less) and discharges, at this moment, will finish the oil extraction process; Have six assignment holes on the pintle 16, wherein three the low pressure assignment holes in the left side provide low pressure oil for plunger 17 oil suctions, and the right three (containing an aperture) is the high pressure assignment hole in addition, when plunger is pressed oil, and the output high pressure oil.

The valve body of above-mentioned pump case 1, pump cover 25, rotor 15, manual constant-pressure variable valve 32 all adopts good spheroidal graphite cast iron of wear resistance and gray cast iron material.

The utility model is mainly used in large-scale constant-pressure variable radial-plunger pump, and as the JB-140H-B type, discharge capacity is 140ml/h, and rated pressure is 28Mpa, and maximum pressure is 31.5Mpa, and rated speed is 1500r/min, and maximum speed is 1800r/min.

Its advantage is: constant-pressure variable, at a high speed, high pressure, big capacity, low noise, long service life, knot Structure is simple, precision is high, smooth running and applied range.

Claims

1. macrotype oilgear pump, it comprises pump case, stator, rotor, backhaul ring, crosshead shoe, link assembly, shaft coupling, transmission shaft, pintle, size control plunger assembly and manual constant pressure valve, it is characterized in that:

(1). the two ends of pump case (1) are fixed with big limit body assembly (2) and little limit body assembly (3) respectively, its inner chamber is a long-round-shape, in the big limit body assembly (2) big control plunger assembly (4) is housed, it is by big control plunger (5), big slide block (6) and damping stifled (7) constitute, big control plunger assembly (4) withstands in the hole of big limit body assembly (2) by spring and shock absorbing seat (8), little control plunger assembly (9) is housed in the little limit body assembly (3), it is by little control plunger (10), small slide block (11) and damping stifled (12) constitute, the radian of big control plunger (5) upper groove matches with the radian that big slide block (6) one ends protrude, the radian that the radian of little control plunger (10) upper groove and small slide block (11) one ends protrude matches, big small slide block (6,11) the groove radian of the other end should be consistent with stator (13) cylindrical radian, big control plunger assembly (4) and little control plunger assembly (9) withstand on the both sides of stator (13) respectively by spring, damping stifled (7) and (12) is placed in big small slide block (6 respectively, 11) and size control plunger (5,10) center;

(2). stator (13) is an annular, its outer surface and pump case (1) internal surface sliding fit, the both sides of justifying in the stator (13) respectively with backhaul ring (14) movingly;

(3). rotor (15) sky is enclosed within on the pintle (16), radially have (9) individual plunger hole on the rotor (15), all be placed with link assembly in each plunger hole, link assembly is by plunger (17), connecting rod (18) and jump ring (19) are formed, the bottom of plunger (17) endoporus is spherical, in plunger (17) endoporus connecting rod (18) is housed, one end of connecting rod (18) is that spherical kissing merging spherical and bottom plunger (17) endoporus is blocked plunger (17) and connecting rod (18) with jump ring (19), the other end of connecting rod (18) is circular arc (20), the both sides of circular arc (20) end have curve bath (21), connecting rod has central through bore on (18), connecting rod (18) is stuck on the boss of two backhaul rings (14), and connecting rod (18) is gone up the arc of curve bath (21) and answered consistent with the circular arc on the backhaul ring (14);

(4). two A projections (23) of transmission shaft (22) left end directly insert in two grooves of crosshead shoe (24), transmission shaft (22) right-hand member has keyway, transmission shaft (22) by bearings on pump cover (25), one end of pump cover (25) and transmission shaft (22) contacting point have oil sealing, it is orthogonal with two A projections (23) of transmission shaft (22) to have two B projections (26) on the rotor (15), have two B projections (26) on the rotor (15) and insert in two other grooves of crosshead shoe (24), respectively rotor (15) and transmission shaft (22) are connected together with four elongated slots that have on square crosshead shoe (24) Vertical direction;

(5). pintle has central through bore on (16), have five big and little totally six blind holes around it, distinguish perforate at two ends, the left and right sides perpendicular to axial direction near pintle (16), have the big V-shaped groove (27) that is mutually 180 ° and be mutually little two V-shaped grooves (28) of 180 ° at the tapping of right-hand member, on pintle (16), have three not grooves (31) for oil groove (29) and two semi-circular four through holes (30) of equidistant annular vertically;

(6). the rear side vertical direction at macrotype oilgear pump is fixed with manual constant-pressure variable valve (32), be fixed with adjusting screw rod (33), spring (34), positioning rod (35), spool (36) and inner spool (37) on it and have the hole (38) of being with wedge angle on valve body, spool (36) and inner spool (37) can move up and down and pressure spring (34).

2. macrotype oilgear pump according to claim 1 is characterized in that: described backhaul ring (14) adopts fills the graphite PTFE.

3. macrotype oilgear pump according to claim 1 is characterized in that: the valve body of described pump case (1), pump cover (25), rotor (15), manual constant-pressure variable valve (32) all adopts good spheroidal graphite cast iron of wear resistance and gray cast iron.