CN213511182U - Radial special-shaped plunger pump with blade characteristics - Google Patents
Radial special-shaped plunger pump with blade characteristics Download PDFInfo
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- CN213511182U CN213511182U CN202021442787.4U CN202021442787U CN213511182U CN 213511182 U CN213511182 U CN 213511182U CN 202021442787 U CN202021442787 U CN 202021442787U CN 213511182 U CN213511182 U CN 213511182U
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Abstract
The utility model discloses a radial special-shaped plunger pump with blade characteristics, which comprises a left valve plate; the right valve plate is distributed with two suction and discharge windows which are respectively communicated with an oil suction port a and an oil discharge port b on the pump shell; the inner surface curve of the stator is formed by the alternate distribution of arcs with unequal radii and transition curves; a cylindrical rotor concentrically disposed inside the stator; a plurality of plunger grooves radially and uniformly distributed along the circumferential direction of the rotor; the outer surface of the valve shaft is sleeved with an inner hole of the cylindrical rotor through a bushing; and a plurality of vane plungers inserted into the plunger grooves so as to be slidable in the plunger grooves, and having tip end portions slidably contacting the inner surface of the rotor. The utility model discloses the plunger pump has the advantage that the flow is big, the pulsation is low, and simultaneously high pressure resistant performance is good.
Description
Technical Field
The utility model relates to a radial dysmorphism plunger pump with blade characteristic.
Background
With the development of high pressure and high speed, the proportion of the high pressure and large flow hydraulic pump in the practical engineering application is larger and larger. Vane and plunger pumps are the main two volumetric pumps. The vane pump has compact structure, light weight, high efficiency, stable operation and other advantages, but in application, the vane pump has easy damage to the vane and can not bear high pressure, the vane pump is easy to leak greatly during working, the output flow pulsation is large, and the problems of noise and vibration occur, so the vane pump is only suitable for medium and low pressure hydraulic systems. The plunger pump can be applied to a high-pressure system due to the good sealing performance of the closed volume of the plunger pump. However, the output flow rate of the plunger pump is inevitably limited due to the limitation in the number of plungers in the plunger pump in design. Meanwhile, the abrasion of the friction pairs (namely, between the blades and the inner surface of the stator, between the swash plate and the piston shoe, and between the piston and the piston groove) of the two pump types is caused.
In order to improve the flow output of the hydraulic pump, the multi-row arrangement of a single-stage pump parallel connection or a single-stage rotor structure is adopted at present to realize the flow superposition, so that the flow of the hydraulic pump is improved. This solution inevitably increases the pulsation of the flow and increases the volume of the pump while the pump flow is increased. On the other hand, through the improvement and the optimization to the hydraulic pump structure of single pump type to promote the performance of pump, reduce the flow pulsation nature of pump, alleviate the vice wearing and tearing problem of friction of pump and in order to promote high pressure resistance and the efficiency of pump.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a radial dysmorphism plunger pump with blade characteristic, this plunger pump have that the flow is big, the advantage that the pulsation is low, and high pressure resistance is good simultaneously.
In order to realize the technical purpose, the utility model discloses a following technical scheme:
a radial profiled plunger pump with vane features comprising:
a pump casing provided with an oil suction port a and an oil discharge port b;
one end of the transmission shaft extends into the pump shell and is in driving connection with the rotating part of the pump through the middle sleeve, and the other end of the transmission shaft extends out of the pump shell and is connected with the driving unit;
the flow distribution shaft is arranged in the pump shell and is coaxially installed with the transmission shaft;
the oil suction channel on the valve shaft is communicated with the oil suction port a on the pump shell, and the oil discharge channel on the valve shaft is communicated with the oil discharge port b on the pump shell;
the inner surface curve of the stator consists of two sections of small-radius arcs, two sections of large-radius arcs and a transition curve which are distributed at intervals;
the right valve plate is distributed with two suction and discharge windows which are respectively communicated with an oil suction port a and an oil discharge port b on the pump shell;
the rotating portion of the pump includes:
a left port plate;
a cylindrical rotor concentrically disposed inside the stator and rotatable with respect to the stator;
a plurality of plunger grooves which are radially and uniformly arranged along the circumferential direction of the cylindrical rotor, wherein each plunger groove is arranged on the cylindrical rotor in a penetrating way along the radial direction of the cylindrical rotor;
the outer surface of the valve shaft is sleeved with an inner hole of the cylindrical rotor through a bushing;
a plurality of vane plungers slidably inserted into the plunger grooves and having tip end portions slidably contacting the inner surface of the rotor;
a plurality of first closed volume units consisting of the vane-type plunger, the left port plate, the right port plate, the inner surface of the stator and the outer surface of the rotor;
a plurality of second enclosed volume units formed by the vane-type plunger, the plunger slot, and a bushing.
The pump housing includes: the pump cover, the middle pump body and the right pump body are fixedly connected through a threaded connection assembly; the middle pump body is provided with the oil suction port a, and the right pump body is provided with the oil discharge port b.
The middle sleeve, the left valve plate and the rotor are fixedly connected through a threaded connection assembly c; the right valve plate and the stator are fixedly connected through a threaded connection assembly b, and the middle sleeve is connected with the transmission shaft through a connecting key b.
The two stators are arranged side by side along the axial direction of the port shaft; the rotor includes two, and two rotors are placed side by side along the valve shaft axial.
And a sealing ring is arranged at the joint of the pump cover, the middle pump body and the right pump body.
And surface texture structures are arranged on the side surface of the blade type plunger and the top end surface of the blade type plunger.
Has the advantages that:
(1) the vane pump and the plunger pump are organically combined, a novel special-shaped radial plunger composite pump structure with vane structural characteristics is provided, and the flow rate of the composite pump is improved and the flow pulsation is effectively reduced through superposition of the flow rate of the two parts and complementation of the pulsation.
(2) When the pump works, a tiny dynamic pressure support is formed on the surface of the friction pair of the pump, so that the friction performance between the vane type plunger and the plunger groove and between the top end face of the plunger and the inner surface of the stator is effectively improved, the abrasion is reduced, the oil leakage is prevented, and the efficiency of the composite pump is improved.
Drawings
FIG. 1 is a cross-sectional view A-A of a radial profiled plunger pump configuration with a vane feature
FIG. 2 is a cross-sectional view B-B of a radial profiled plunger pump configuration with lobe features
FIG. 3 is a front view of the right port plate of the present invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a front view of the left port plate of the present invention;
FIG. 7 is a sectional view taken along line G of FIG. 6;
FIG. 8 is a front view of the intermediate sleeve of the present invention;
FIG. 9 is a side view of FIG. 8;
FIG. 10 is a schematic view of the vane-type plunger surface microstructure.
Wherein:
the pump comprises a transmission shaft 1, a connecting key a2, a transmission shaft sleeve 3, a screw connecting assembly a4, a pump cover 5, a middle pump body 6, a bearing 7, a middle sleeve 8, a left valve plate 9, a stator a10, a stator b11, a rotor a12, a rotor b13, a right pump body 14, a right valve plate 15, a valve shaft 16, a bushing 17, a vane-type plunger 18, a sealing ring a19, a sealing ring b20, a threaded connecting assembly b21, a threaded connecting assembly c22, a sealing ring c23, a connecting key b24, a clamping ring 25 and a threaded connecting assembly d 26.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the drawings and specific embodiments.
The utility model provides a radial dysmorphism plunger pump with blade characteristic, as shown in fig. 1, fig. 2, its structure is connected fixedly through threaded connection subassembly a4, threaded connection subassembly d26 by pump cover 5, the middle pump body 6, the right pump body 14, constitutes the casing of pump, and the rotating part of pump is laid wherein.
The drive shaft 1 is placed in the drive shaft sleeve 3 and the bearing 7, and the bearing 7 is positioned on the drive shaft 1 by a snap ring 25. Is rotated by the motor through the connecting key a 2. A bush 17, a left port plate 9 and a right port plate 15 are mounted on a port shaft 16 of the pump.
Two oil suction and discharge windows are distributed in the right port plate 15 and are respectively communicated with the oil suction port a of the middle pump body 6 and the oil discharge port b of the right pump body 14.
The rotor a12 is placed on the outer surface of the bushing 17 side by side with the rotor b13, and the bushing 17 is mounted on the outer surface of the port shaft 16.
The port shaft 16 is provided with two suction and discharge channels which are respectively communicated with the oil suction port a of the middle pump body 6 and the oil discharge port b of the right pump body 14. And plunger grooves are uniformly distributed on the rotor a12 and the rotor b13 in the radial direction, and the vane type plungers 18 are arranged in the plunger grooves.
When the pump is operated, the end faces of the vane-type plungers 18 are brought into close contact with the inner surfaces of the stators a10 and b11 by centrifugal force.
As shown in fig. 1, the two stators are arranged side by side, and the inner surfaces of the two stators are formed by two small-radius arcs, two large-radius arcs and transition curves which are distributed at intervals (fig. 2).
The left port plate 9, the rotor a12, the rotor b13 and the middle sleeve 8 (fig. 9) are fixedly connected through a threaded connection assembly c 22.
The right port plate 15, the stator a10 and the stator b11 are fixedly connected through a threaded connection assembly b 21. Wherein, the middle sleeve 8 is connected with the transmission shaft 1 through a connecting key b 24. When the transmission shaft 1 rotates, the rotor is driven to rotate through the middle sleeve 8.
As shown in fig. 1, in order to improve the efficiency of the pump and prevent oil leakage, seal rings a19, b20 and c23 are installed at three positions of the pump.
In order to improve the friction performance of the friction pair of the compound pump during operation, surface texture structures are distributed on the side surface and the top end surface of the blade-type plunger 18, and as shown in fig. 10, the surface textures with different appearances are arranged according to a certain rule.
When the pump during operation, form small dynamic pressure at the vice surface of friction of pump and support, the effectual friction properties who improves between vane type plunger and plunger groove, vane type plunger top terminal surface and the stator internal surface reduces wearing and tearing, prevents that fluid from leaking, improves the utility model discloses the efficiency of plunger pump.
When the pump works, the flow of the radial special-shaped plunger pump with the blade characteristic is formed by combining two parts of flow, and when the size of the closed volume is changed, the oil suction and oil discharge processes of the pump are respectively formed.
A portion of the enclosed volume unit is comprised of the vaned plunger 18, the left port plate 9, the right port plate 15, and the inner surfaces of the stators 10a, b 11.
When the rotor rotates, because of the curves with different lengths on the inner surface of the stator, the closed volume of the part is from small to large and then from large to small, oil respectively passes through the oil suction and discharge windows on the right valve plate 15, low-pressure oil is sucked through the oil suction port a of the middle pump body 6, and high-pressure oil is discharged through the oil discharge port b of the right pump body 14.
The other part of the enclosed volume units are enclosed volumes composed of vane-type plungers 18, plunger grooves on the rotors a12 and b13, and bushings 17. When the rotor rotates, due to the different length curves of the inner surface of the stator, the vane type plunger 18 tightly attached to the inner surface of the stator forms reciprocating motion in the plunger groove, and the vane type plunger 18 extends out and retracts in the plunger groove to enable the closed volume of the part to be from small to large and then from large to small, so that the oil suction and discharge processes of the pump are formed. The oil liquid passes through the oil suction and oil discharge channel on the valve shaft 16, the low pressure oil is sucked through the oil suction port a of the middle pump body 6, and the high pressure oil liquid is discharged through the oil discharge port b of the right pump body 14.
The rotor rotates a circle, the two closed volume units respectively suck and discharge oil twice, and the discharged oil is superposed and synthesized into the total flow of the proposed plunger pump.
Because the side surface of the blade type plunger and the top end surface of the blade type plunger are provided with the surface texture structures, when the pump works, a tiny dynamic pressure support is formed on the surface of a friction pair of the pump, the friction performance between the blade type plunger and a plunger groove and between the top end surface of the plunger and the inner surface of a stator is effectively improved, the abrasion is reduced, the oil leakage is prevented, and the efficiency of the composite pump is improved.
Claims (4)
1. A radial profiled plunger pump with vane features comprising:
a pump housing provided with an oil suction port (a) and an oil discharge port (b);
one end of the transmission shaft extends into the pump shell and is in driving connection with the rotating part of the pump through the middle sleeve, and the other end of the transmission shaft extends out of the pump shell and is connected with the driving unit;
the flow distribution shaft is arranged in the pump shell and is coaxially installed with the transmission shaft;
the oil suction channel on the valve shaft is communicated with the oil suction port (a) on the pump shell, and the oil discharge channel on the valve shaft is communicated with the oil discharge port (b) on the pump shell;
the inner surface curve of the stator consists of two sections of small-radius arcs, two sections of large-radius arcs and a transition curve which are distributed at intervals;
the right valve plate is distributed with two suction and discharge windows which are respectively communicated with an oil suction port (a) and an oil discharge port (b) on the pump shell;
the rotating portion of the pump includes:
a left port plate;
a cylindrical rotor concentrically disposed inside the stator and rotatable with respect to the stator;
a plurality of plunger grooves which are radially and uniformly arranged along the circumferential direction of the cylindrical rotor, wherein each plunger groove is arranged on the cylindrical rotor in a penetrating way along the radial direction of the cylindrical rotor;
the outer surface of the valve shaft is sleeved with an inner hole of the cylindrical rotor through a bushing;
a plurality of vane plungers slidably inserted into the plunger grooves and having tip end portions slidably contacting the inner surface of the rotor;
a plurality of first closed volume units consisting of the vane-type plunger, the left port plate, the right port plate, the inner surface of the stator and the outer surface of the rotor;
a plurality of second enclosed volume units formed by the vane-type plunger, the plunger slot, and a bushing;
the two stators are arranged side by side along the axial direction of the port shaft; the two rotors are arranged side by side along the axial direction of the port shaft;
and surface texture structures are arranged on the side surface of the blade type plunger and the top end surface of the blade type plunger.
2. The radial profiled plunger pump with lobe feature of claim 1, wherein the pump housing comprises: the pump cover, the middle pump body and the right pump body are fixedly connected through a threaded connection assembly; the middle pump body is provided with the oil suction port (a), and the right pump body is provided with the oil discharge port (b).
3. The radial profiled plunger pump with vane feature of claim 1, wherein the middle sleeve, the left port plate and the rotor are connected and fixed by a threaded connection assembly c; the right valve plate and the stator are fixedly connected through a threaded connection assembly b, and the middle sleeve is connected with the transmission shaft through a connecting key b.
4. The radial profiled plunger pump with blade features of claim 2 wherein the pump cover, the intermediate pump body and the right pump body are provided with sealing rings at their junctions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021442787.4U CN213511182U (en) | 2020-07-21 | 2020-07-21 | Radial special-shaped plunger pump with blade characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021442787.4U CN213511182U (en) | 2020-07-21 | 2020-07-21 | Radial special-shaped plunger pump with blade characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213511182U true CN213511182U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021442787.4U Active CN213511182U (en) | 2020-07-21 | 2020-07-21 | Radial special-shaped plunger pump with blade characteristics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213511182U (en) |
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2020
- 2020-07-21 CN CN202021442787.4U patent/CN213511182U/en active Active
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