CN2700599Y - High pressure radial-plunger oil pump - Google Patents

Abstract

The utility model relates to a radial plunger oil pump with high pressure, which is used for a switch with high pressure and belongs to liquid variable capacity machinery in the section F of IPC classification. The utility model is characterized in that two driving lugs arranged in the form of one shaft with double eccentricity of 180 DEG are arranged on a single crank shaft; a plunger is integral; the single crank shaft penetrates through an oblong hole in the middle of the integral plunger, and is connected with the integral plunger via a needle roller and a slide block; a shaft head of the single crank shaft, which extends into one end of the inner cavity of a pump body, enters a cross slot on a shaft head of a tooth pump shaft; a shaft head on the other end of the tooth pump shaft is pushed in a copper sleeve of an inner hole of a tooth pump cover; the tooth pump shaft is sheathed with a gear and an internal tooth sleeve; an oil inlet is provided with a voltage stabilizer composed of a spring and a steel ball; a non-return ball valve of the inlet and a non-return ball valve of an outlet are arranged on a value body. The utility model overcomes the defect that the dithering and big noise influence the service life of the pump in the prior art, and has the advantages of stability, no dithering and low noise in operation with high speed and high pressure, therefore the service life of the pump is prolonged.

Description

High-pressure radial plunger oil pump

Technical field

The utility model relates to a kind of energy storage pump that is used for high-voltage switch gear, and particularly a kind of high-pressure radial plunger oil pump belongs to the category of the fluid varactor machine in the mechanical engineering of International Patent Classification (IPC) F portion.

Background technique

At present, the profile that is used for the high-pressure radial plunger oil pump of high-voltage switch gear is circle or triangle, and transmission shaft is the single axle, and cylinder body and plunger are arranged along radial several five equilibriums of center of circle Wu in pump case.Plunger backhaul oil suction is finished by spring or linkage mechanism.The motor drives bent axle compresses each plunger successively, makes it oil extraction, and the single axle of rotation and the radial force between the housing force bearing point are unidirectional.A continual inclined to one side direction is stressed to have caused the shake of pump in the high speed and high pressure running, and high-frequency shake certainly will influence the flexibility of one-way valve and plunger oil suction homing action.The plunger backhaul is not in place, and the oil suction deficiency makes the pressure sky that plunger has, the pressure oil that has when pressing oil, unbalance stress, and the radial plunger suction capacity is poor in addition, has aggravated the shake and the noise of pump.It is up and down to demonstrate the pointer vibration on pressure meter, the inequality of boosting, discharge capacity deficiency.

The model utility content

It is big and influence the deficiencies such as working life of pump that the purpose of this utility model is to overcome shake of the prior art and noise, by existing high pressure oil pump structure is improved, provided a kind of novel high-pressure radial plunger oil pump, this oil pump has been set up pressurization, stable-pressure device at inlet port, and single axle and plunger shape improved, thereby reached in high speed and high pressure running running steadily, the purpose of non-jitter, low noise.

The technical solution that the utility model provides is: this high-pressure radial plunger oil pump, mainly include parts such as the pump housing, valve body, single axle, plunger, cylinder body, high-pressure outlet joint and inlet attack, wherein in the middle of the inner chamber of the pump housing, be provided with the single axle, the single axle is connected with plunger in the inner chamber that is distributed in the pump housing, the end that the single axle leans out the pump housing is connected with the output shaft of motor, is characterized in

Described single axle is provided with at least two and drives projection, and it is shaped as two off-centre and is 180 ° of settings;

Described plunger is at least two group integrated type plungers, and what connect two plungers in the middle of every group of integrated type plunger is the sleeve that has oblong aperture, and the oblong aperture inwall of sleeve is provided with copper shoe;

Described single axle passes the oblong aperture in the middle of the integrated type plunger, and is connected with the integrated type plunger by needle roller, slide block;

Described single axle is visited an end spindle nose of pump housing inner chamber into and is entered in the translot on the tooth pump shaft one end spindle nose, in the copper sheathing of tooth pump shaft the other end spindle nose jacking tooth pump cover endoporus, be with gear and internal tooth casing on the tooth pump shaft, tooth pump cover, the internal tooth pump housing and bearing support closely are connected with the pump housing by bolt;

Oil-feed oil circuit in inlet attack and the pump between the accumulator is provided with the stable-pressure device of being made up of spring and steel ball, entering the mouth non-return valve and exporting non-return valve into and out of being respectively arranged with between oil circuit and the cylinder body on the left and right valve body.

Compared with prior art, the beneficial effects of the utility model are: it is big and influence the shortcoming in the working life of pump to have overcome shake of the prior art and noise, accomplish in high speed and high pressure running running steadily, non-jitter, low noise, thereby prolonged working life of pump.

Description of drawings

A kind of embodiment's that Fig. 1 provides for the utility model plan view;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the right elevation of Fig. 1;

Fig. 4 is the rear view of Fig. 1;

Fig. 5 is the plan view of Fig. 1;

Fig. 6 is the A--A sectional view of Fig. 1;

Fig. 7 is the B--B sectional view of Fig. 1;

Fig. 8 is the C--C sectional view of Fig. 1;

Fig. 9 is the D--D sectional view of Fig. 1;

Figure 10 is the E--E sectional view of Fig. 5;

Figure 11 is the F--F sectional view of Fig. 5;

Figure 12 is the G--G sectional view of Fig. 5;

Figure 13 is the H--H sectional view of Fig. 8.

Number in the figure is: 1. the pump housing, 2. left valve barrel, 3. right valve barrel, 4. bent axle, 5. bearing support, 6. inlet attack, 7. high-pressure outlet joint, 8. bolt, 9. sealing plug screw 10. spool is used seal ring, the 11. internal tooth pump housing and bearing supports, 12. tooth pump covers, 13. bolt, 14. sealing plug screws, 15. bolts, 16. bolts, 17. bolt, 18. cylinder bodies, 19. plungers, 20. bearings, 21. the tooth pump shaft, 22. gears, 23. internal tooth casings, 24. copper sheathing, 25. linings, 26. needle rollers, 27. slide block, 28. positioning guide plates, 29. copper shoes, 30.O RunddichtringO, 31. cylinder sleeves, 32. plugs, 33.O RunddichtringO, 34. steel balls, 35. springs, 36. spring, 37. sealing gaskets, 38.O RunddichtringO, 39. sealing gasket, 40. sealing gaskets, 41. springs.

Embodiment

Below in conjunction with accompanying drawing concrete technological scheme of the present utility model is described further:

Fig. 1～Fig. 5 is respectively a kind of embodiment's that the utility model provides plan view, left view, right elevation, rear view and plan view.As shown in the figure, the utility model is long cube external form, mainly include the pump housing 1, left valve barrel 2, right valve barrel 3, single axle 4, plunger 19, parts such as high-pressure outlet joint 7 and inlet attack 6, in the middle of the inner chamber of the pump housing 1, be provided with single axle 4, the end that this single axle 4 leans out the pump housing 1 is connected with the output shaft of motor, left valve barrel 2, right valve barrel 3, closely be connected with the pump housing 1 by bolt 15 respectively, the internal tooth pump housing and bearing support 11 closely are connected with the pump housing 1 by bolt 17 with tooth pump cover 12, and high-pressure outlet joint 7 and inlet attack 6 are arranged on the long cubical upper-end surface.

Fig. 6 has reflected the A--A cross-section structure of Fig. 1, and Fig. 7 has reflected the B--B cross-section structure of Fig. 1, and Fig. 8 has reflected the C--C cross-section structure of Fig. 1, and Fig. 9 has reflected the D--D cross-section structure of Fig. 1.As shown in Figure 6, in the middle of the inner chamber of the pump housing 1, be provided with single axle 4, this single axle 4 is provided with two and drives projection, it is shaped as two off-centre and is 180 ° of settings, this single axle 4 is connected with two groups of plungers 19 in the inner chamber that is distributed in the pump housing 1, every group of plunger 19 is the integrated type plunger, the centre that connects two plungers 19 is one to have the sleeve of oblong aperture, the oblong aperture inwall of sleeve is provided with copper shoe 29, single axle 4 passes the oblong aperture in the middle of the integrated type plunger 19, and by needle roller 26, slide block 27 is connected with integrated type plunger 19, the end spindle nose that single axle 4 visits the pump housing 1 inner chamber enters in the translot on the tooth pump shaft 21 1 end spindle noses, in the copper sheathing 24 of tooth pump shaft 21 the other end spindle nose jacking tooth pump covers 12 endoporus, be with gear 22 and internal tooth casing 23 on the tooth pump shaft 21, tooth pump cover 12, the internal tooth pump housing and bearing support 11 closely is connected with the pump housing 1 by bolt 17, gives the structural relation of the stable-pressure device of being made up of spring 35 and steel ball 34 that is provided with on the oil-feed oil circuit between the accumulator in inlet attack and pump in Fig. 1.Fig. 7 has provided the structural relation of right valve barrel 3.Fig. 8 has provided the structural relation of left valve barrel 3.Fig. 9 has provided the structural relation between plunger 19, cylinder body 18 and the positioning guide plate 28.

Figure 10 has reflected the E--E cross-section structure of Fig. 5, and Figure 11 has reflected the F--F cross-section structure of Fig. 5, and Figure 12 has reflected the G--G cross-section structure of Fig. 5, and Figure 13 has reflected the H--H cross-section structure of Fig. 8.Figure 10 has provided inlet attack 6 and has reached by tooth pump shaft 21, the structural relation of the pressurization device that gear 22 and internal tooth casing are formed, Figure 11 has provided high-pressure outlet joint and integrated type plunger 19, cylinder body 18, positioning guide plate 28, single axle 4, needle roller 26, structural relation between the slide block 27, from Figure 11, be also shown on a left side, advancing on the right valve barrel, be respectively arranged with two groups of inlet non-return valves and outlet non-return valve between vent line and the cylinder body, Figure 12 has provided tooth pump shaft 21, structural relation between gear 22 and the internal tooth casing 23, Figure 13 looks the structural relation that face has provided oil circuit and non-return valve on the left valve barrel 2 from another.

Assemble sequence of the present utility model is

1. two integrated type plungers 19, positioning guide plate 28 are packed in the pump housing 1, again two cylinder bodies 18 gently are pressed in the plunger 19 and the pump housing, when the two ends of guide plate 28 to be positioned enter the groove that two cylinder bodies 18 match, 1 two end faces of the pump housing are concordant with cylinder body 18 end faces, oil sealing 38 is packed in the groove at the pump housing 1 two ends, again left valve barrel 2, right valve barrel 3 usefulness bolts 15 closely are connected with the pump housing 1, with bolt 13 cylinder body 18 closely are connected with left valve barrel 2, right valve barrel 3 again.

2. bearing 20 is removed pack into behind the dust cover internal tooth pump housing and bearing support 11, again tooth pump shaft 21, gear 22 and internal tooth casing 23 are packed in the internal tooth pump housing and the bearing support 11, the internal tooth pump housing and bearing support 11 are packed in the pump housing 1 hole, with bolt 17 tooth pump cover 12, the internal tooth pump housing and bearing support 11 closely are connected with the pump housing 1 again.

3. needle roller 26 usefulness lubricating grease are arranged in two axle journal grooves of bent axle 4, again slide block 27 is inserted on the axle journal of filling needle roller 26 from the two ends of bent axle 4 respectively, again bent axle 4 brachycephaly one end is passed through the oblong aperture of plunger 19 with slide block 27 from the pump housing 1 hole, the homalocephalus of bent axle 4 spindle noses is packed in the translot of tooth pump shaft 21, bent axle 4 axle journals enter bearing 20 holes and cooperate, and slide block 27 enters in the oblong aperture of plunger 19.

4. the bearing support 5 of bearing 20 being packed in the pump housing 1 of again bearing support 5 being packed into, closely is connected bearing support 5 with the pump housing 1 with bolt 8, axle is packed between bearing support 5 and the bent axle 4 with seal ring 10, again with plug 32 screw-in bearing supports 5.

5. inlet attack 6 usefulness bolts 16 closely are connected with the pump housing 1, high-pressure outlet joint 7 closely is connected with the pump housing 1.

Working principle of the present utility model is:

Because the interior space of pump is an accumulator, 4 rotations of motor drives bent axle, bent axle 4 driving cog pump shafts 21, driven gear 22 internal tooth casings 23 rotate, head pressure oil, advance accumulator by oil circuit, oil pressure fixes on 0.5Mpa in advance by pressure regulator valve in the pump housing 1, bent axle 4 drives two disjunctor plungers 19 by slide block 27 and do straight reciprocating motion in four cylinder body, plunger 19 is when the backhaul oil suction, the outlet non-return valve cuts out, and the pressure oil of the 0.5Mpa non-return valve that will enter the mouth is opened in the pump housing 1, in oil injection cylinder body 18 chambeies.The injection inlet non-return valve that finishes cuts out under spring action, and bent axle 4 drive plunger 19 go out oil pressure in cylinder body 18 chambeies, and pressure oil will export non-return valve and open, by high-pressure outlet 7 discharges.

Because what the utility model provided is 4 two drive points of single axle, 180 degree configurations, two power of two drive point bent axles 4 act on two opposite directions simultaneously, at this moment the radial force size of axle and arranged on left and right sides is identical, the direction of power is opposite (to the top), and the pump housing 1 and bent axle 4 left and right sides are subjected to onesize power simultaneously.Four suction ports force the oil mass of injection to equate, the power when pressing oil also equates.Any one angle of pump is reciprocity producing balanced forces in high speed and high pressure running, thus running steadily, non-jitter, low noise, the pressure meter display pointer does not tremble, and boosts steadily, discharge capacity is even.

Note during use:

(1), come the oil pressurization after, the bearing of must flowing through just can enter accumulator.So must remove dust cover oil could pass through.Bearing itself also is the passage of oil.

(2), 4 liang of axle journals of bent axle are adorned the bearing place, must be very little being slidingly matched in gap.

(3), after plunger assembled, can make its activity freely with finger.

(4), after the pump general assembly, can shake bent axle with 50 millimeters long rocking bars and easily rotate.

(5), clockwise direction running.Be rotated counterclockwise and can cause oil starvation, abrasive parts using damages oil pump.

Claims (1)

1. high-pressure radial plunger oil pump, mainly include parts such as the pump housing, valve body, single axle, plunger, high-pressure outlet joint and inlet attack, wherein in the middle of the inner chamber of the pump housing, be provided with the single axle, this single axle is connected with plunger in the inner chamber that is distributed in the pump housing, the end that this single axle leans out the pump housing is connected with the output shaft of motor, it is characterized in that

Described single axle is provided with at least two and drives projection, and it is shaped as two off-centre and is 180 ° of settings;

Described plunger is at least two group integrated type plungers, and what connect two plungers in the middle of every group of integrated type plunger is the sleeve that has oblong aperture, and the oblong aperture inwall of sleeve is provided with copper shoe;

Described single axle passes the oblong aperture in the middle of the integrated type plunger, and is connected with the integrated type plunger by needle roller, slide block;

Described single axle is visited an end spindle nose of pump housing inner chamber into and is entered in the translot on the tooth pump shaft one end spindle nose, in the copper sheathing of tooth pump shaft the other end spindle nose jacking tooth pump cover endoporus, be with gear and internal tooth casing on the tooth pump shaft, tooth pump cover, the internal tooth pump housing and bearing support closely are connected with the pump housing by bolt;

Oil-feed oil circuit in inlet attack and the pump between the accumulator is provided with the stable-pressure device of being made up of spring and steel ball, entering the mouth non-return valve and exporting non-return valve into and out of being respectively arranged with between oil circuit and the cylinder body on the left and right valve body.

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