阅读说明：本技术 具有内凹式叶片的叶片泵 (Vane pump with concave vanes ) 是由 姚公和 杨后松 赵长江 于 2020-12-04 设计创作，主要内容包括：本发明属于叶片泵技术领域,公开了一种具有内凹式叶片的叶片泵。该具有内凹式叶片的叶片泵,包括定子、转子和封盖,所述转子位于定子上开设的泵油腔内,定子的边缘开设有定位孔,转子中部开设有轴孔,轴孔的轴心与定子的轴心重合,所述转子外壁开设有四个以转子轴心为参照环形排列的叶片机构,所述封盖与定子的背面贴合,所述定子内还设置有加压机构。该具有内凹式叶片的叶片泵,通过加压机构利用泵油腔内压力转化为推力,伴随泵油腔内油的运动,一方面为转子施加转动的冲击力,另一方面油被压入供油缺口加速叶片弹出,大大的提高了叶片泵的输油效率。(The invention belongs to the technical field of vane pumps and discloses a vane pump with concave vanes. This vane pump with indent formula blade, including stator, rotor and closing cap, the rotor is located the pump oil intracavity of seting up on the stator, and the locating hole has been seted up at the edge of stator, and the shaft hole has been seted up at the rotor middle part, and the axle center in shaft hole coincides with the axle center of stator, four use rotor axle center as the blade mechanism of reference annular arrangement, the closing cap is laminated with the back of stator, still be provided with loading system in the stator. According to the vane pump with the concave vanes, the pressure in the pump oil cavity is converted into thrust through the pressurizing mechanism, and along with the movement of oil in the pump oil cavity, on one hand, rotating impact force is applied to the rotor, and on the other hand, the oil is pressed into the oil supply notch to accelerate the vanes to pop up, so that the oil conveying efficiency of the vane pump is greatly improved.)

1. The utility model provides a vane pump with indent formula blade, includes stator (1), rotor (2) and closing cap (3), rotor (2) are located pump oil chamber (4) of seting up on stator (1), and locating hole (5) have been seted up at the edge of stator (1), and shaft hole (6) have been seted up at rotor (2) middle part, and the axle center of shaft hole (6) and the axle center coincidence of stator (1), its characterized in that: the outer wall of the rotor (2) is provided with four blade mechanisms (7) which are annularly arranged by taking the axis of the rotor (2) as a reference, the sealing cover (3) is attached to the back of the stator (1), and a pressurizing mechanism (8) is also arranged in the stator (1);

blade mechanism (7) include blade groove (71), blade (72), spring (73), four blade grooves (71) are the annular arrangement offer on the lateral wall of rotor (2), peg graft in blade groove (71) blade (72), constant head tank (74) have been seted up to one side that blade (72) are close to blade groove (71) diapire, constant head tank two (75) have been seted up to the position that blade groove (71) diapire corresponds constant head tank one (74), the both ends of spring (73) respectively with the diapire contact of constant head tank one (74) and constant head tank two (75), one side that blade groove (71) diapire was kept away from in blade (72) and pump oil pocket (4) inner wall contact, and arc wall (76) have been seted up in one side middle part that blade (72) kept away from blade groove (71) diapire.

2. Vane pump with concave vanes according to claim 1, characterized in that: the pressurizing mechanism (8) comprises an arc-shaped perforation (81), a first piston head (82), a second piston head (83), an arc rod (84), a screw hole (85), a pressure regulating rod (86), a pressure regulating arc plate (87), a reset spring (88), a positioning ring (89) and a positioning protrusion (810), wherein the arc-shaped perforation (81) is arranged in the stator (1) and is positioned on the left side of the pump oil cavity (4), two ends of the arc-shaped perforation (81) are communicated with the pump oil cavity (4) and are respectively positioned on the upper right side and the lower right side of the pump oil cavity (4), the first piston head (82), the second piston head (83) and the arc rod (84) are all positioned in the arc-shaped perforation (81), the first piston head (82) and the second piston head (83) are respectively fixedly connected with the upper end and the lower end of the arc rod (84), the screw hole (85) is arranged on the right side of the stator (1) and is communicated with the arc-shaped perforation (81), pressure regulating pole (86) extend to in the arc perforation (81) and swing joint has pressure regulating arc board (87), location protruding (810) set up in arc perforation (81) inner wall and lie in screw (85) top, holding ring (89) fixed connection just lie in between location protruding (810) and screw (85) on arc pole (84), reset spring (88) both ends respectively with holding ring (89) and location protruding (810) contact.

3. Vane pump with concave vanes according to claim 2, characterized in that: the radian of the pressure regulating arc plate (87) is the same as that of the arc rod (84), and a cushion (9) is bonded on the inner wall of the pressure regulating arc plate (87).

4. A vane pump having concave vanes according to claim 3, wherein: the cushion (9) is a rubber cushion, lubricating oil is filled in the arc-shaped through hole (81) and between the first piston head (82) and the second piston head (83), and the return spring (88) is an extension spring (73).

5. Vane pump with concave vanes according to claim 4, characterized in that: the length of the arc rod (84) is one half of the length of the arc-shaped through hole (81), and the lengths of the piston head I (82) and the piston head II (83) are one quarter of the length of the arc-shaped through hole (81).

6. The vane pump with concave vanes of claim 5, wherein: when the return spring (88) is in a balanced state, the arc rod (84) is overlapped with the center of the arc perforation (81), and oil supply notches (10) are formed in the positions, close to the bottom wall of the vane groove (71), of the two side walls of the vane groove (71).

7. Vane pump with concave vanes according to claim 6, characterized in that: the axle center of closing cap (3) and the axle center coincidence of stator (1), small opening (11) have been seted up on the top of arc perforation (81) inner wall, the other end of small opening (11) is located the back of stator (1), U-shaped hole (12) have been seted up in closing cap (3), the one end and small opening (11) intercommunication in U-shaped hole (12), the other end in U-shaped hole (12) is in the orbit of fuel feeding breach (10), draining groove (13) have still been seted up in the left side that closing cap (3) openly just correspond pump oil chamber (4), the bottom of draining groove (13) is in the orbit of fuel feeding breach (10), the top of draining groove (13) is in the middle part left end of pump oil chamber (4), and be in between rotor (2) and pump oil chamber (4) inner wall.

Technical Field

The invention relates to the technical field of vane pumps, in particular to a vane pump with concave vanes.

Background

The vane pump is a pump in which vanes in a rotor groove are in contact with a pump casing to press sucked liquid from an oil inlet side to an oil discharge side.

In the current impeller pump, the blade utilizes spring force to realize popping out among the operation process, and we find this kind of operation mode and bring the limitation for the high-speed operation of impeller pump in the in-service use, receives the reaction rate influence of spring, can appear the blade and pop out untimely condition in high-speed operation, and the condition that breaks away from appears in blade and the pump oil pocket inner wall seriously influences the internal balance of pump body, influences the oil transportation efficiency.

Disclosure of Invention

The invention aims to provide a vane pump with concave vanes, which converts pressure in a pump oil cavity into thrust through a pressurizing mechanism, so that on one hand, rotating impact force is applied to a rotor, on the other hand, the ejection of the vanes is accelerated, and the working efficiency of the vane pump is greatly improved.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a vane pump with indent formula blade, includes stator, rotor and closing cap, the rotor is located the pump oil intracavity of seting up on the stator, and the locating hole has been seted up at the edge of stator, and the shaft hole has been seted up at the rotor middle part, and the axle center in shaft hole coincides with the axle center of stator, four blade mechanisms that use the rotor axle center as referring to the annular arrangement have been seted up to the rotor outer wall, the closing cap is laminated with the back of stator, still be provided with loading system in the stator.

The vane mechanism comprises vane grooves, vanes and springs, the four vane grooves are annularly arranged and are arranged on the outer side wall of the rotor, the vanes are inserted into the vane grooves, a first positioning groove is formed in one side, close to the bottom wall of the vane grooves, of each vane, a second positioning groove is formed in the position, corresponding to the first positioning groove, of the bottom wall of the vane grooves, and the two ends of each spring are in contact with the bottom walls of the first positioning groove and the second positioning groove respectively.

Preferably, the pressurizing mechanism comprises an arc-shaped through hole, a piston head I, a piston head II, an arc rod, a screw hole, a pressure regulating rod, a pressure regulating arc plate, a return spring, a positioning ring and a positioning protrusion, the arc-shaped through hole is formed in the stator and is positioned on the left side of the pump oil cavity, two ends of the arc-shaped through hole are communicated with the pump oil cavity and are respectively positioned on the upper right side and the lower right side of the pump oil cavity, the piston head I, the piston head II and the arc rod are all positioned in the arc-shaped through hole, the first piston head and the second piston head are respectively fixedly connected with the upper end and the lower end of the arc rod, the screw hole is arranged on the right side of the stator and is communicated with the arc-shaped through hole, the internal thread of the screw hole is connected with a pressure regulating rod, the pressure regulating rod extends into the arc-shaped through hole and is movably connected with a pressure regulating arc plate, the positioning protrusion is arranged on the inner wall of the arc-shaped through hole and located above the screw hole, the positioning ring is fixedly connected to the arc rod and located between the positioning protrusion and the screw hole, and two ends of the reset spring are respectively in contact with the positioning ring and the positioning protrusion.

Preferably, the radian of the pressure regulating arc plate is the same as that of the arc rod, and a soft cushion is bonded on the inner wall of the pressure regulating arc plate.

Preferably, the cushion is a rubber pad, lubricating oil is filled in the arc-shaped through hole and between the first piston head and the second piston head, and the return spring is an extension spring.

Preferably, the length of the arc rod is one half of the length of the arc-shaped perforation, and the lengths of the piston head I and the piston head II and one quarter of the length of the arc-shaped perforation.

Preferably, when the reset spring is in a balanced state, the arc rod is superposed with the center of the arc-shaped through hole, and oil supply notches are formed in the positions, close to the bottom wall of the blade groove, of the two side walls of the blade groove.

Preferably, the axle center of closing cap and the axle center coincidence of stator, the small opening has been seted up on the top of the perforation inner wall of arc, and the other end of small opening is located the back of stator, has seted up the U-shaped hole in the closing cap, and the one end and the small opening intercommunication in U-shaped hole, the other end in U-shaped hole are in the orbit of fuel feeding breach, and the oil drainage groove has still been seted up on the positive left side that just corresponds the pump oil pocket of closing cap, and the bottom in oil drainage groove is in the orbit of fuel feeding breach, and the top in oil drainage groove is in the middle part left end of pump oil pocket, and is in between rotor and.

By adopting the technical scheme, the invention has the beneficial effects that:

1. according to the vane pump with the concave vanes, the pressure in the pump oil cavity is converted into thrust through the pressurizing mechanism, and along with the movement of oil in the pump oil cavity, on one hand, rotating impact force is applied to the rotor, and on the other hand, the oil is pressed into the oil supply notch to accelerate the vanes to pop up, so that the oil conveying efficiency of the vane pump is greatly improved.

2. This vane pump with indent formula blade through the arc wall of seting up on the blade, its contact surface with the pump oil pocket can realize switching among the rotor operation process, compares in traditional cambered surface blade, great reduction blade wear, makes this blade have higher life.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a front cross-sectional view of the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 3 in accordance with the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

fig. 6 is a schematic view of the structure of the blade of the present invention.

In the figure: 1 stator, 2 rotors, 3 sealing covers, 4 pump oil chambers, 5 positioning holes, 6 shaft holes, 7 vane mechanisms, 71 vane grooves, 72 vanes, 73 springs, 74 positioning groove I, 75 positioning groove II, 76 arc-shaped grooves, 8 pressurizing mechanisms, 81 arc-shaped through holes, 82 piston head I, 83 piston head II, 84 arc rods, 85 screw holes, 86 pressure regulating rods, 87 pressure regulating arc plates, 88 reset springs, 89 positioning rings, 810 positioning protrusions, 9 cushions, 10 oil supply gaps, 11 leakage holes, 12U-shaped holes and 13 oil drainage grooves.

Detailed Description

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a vane pump with indent formula blade, includes stator 1, rotor 2 and closing cap 3, rotor 2 is located the pump oil chamber 4 that sets up on stator 1, and locating hole 5 has been seted up at stator 1's edge, and shaft hole 6 has been seted up at rotor 2 middle part, and the axle center of shaft hole 6 coincides with stator 1's axle center, and four use rotor 2 axle centers to set up as the blade mechanism 7 of reference annular arrangement for rotor 2 outer walls, and closing cap 3 and stator 1's back laminating still are provided with presser mechanism 8 in the stator 1.

Blade mechanism 7 includes blade groove 71, blade 72, spring 73, four blade grooves 71 are the seting up on rotor 2's lateral wall of annular arrangement, blade 72 pegs graft in blade groove 71, one side that blade 72 is close to blade groove 71 diapire has seted up constant head tank 74, constant head tank two 75 has been seted up to the position that blade groove 71 diapire corresponds constant head tank 74, spring 73's both ends respectively with the diapire contact of constant head tank 74 and constant head tank two 75, arc wall 76 through seting up on blade 72, its and pump oil chamber 4's contact surface can realize switching in rotor 2 operation process, compare in traditional cambered surface blade, great reduction the blade wearing and tearing, make this blade 72 have higher life.

The pressurizing mechanism 8 comprises an arc-shaped through hole 81, a first piston head 82, a second piston head 83, an arc rod 84, a screw hole 85, a pressure regulating rod 86, a pressure regulating arc plate 87, a return spring 88, a positioning ring 89 and a positioning protrusion 810, wherein the arc-shaped through hole 81 is arranged in the stator 1 and is positioned on the left side of the pump oil cavity 4, two ends of the arc-shaped through hole 81 are communicated with the pump oil cavity 4 and are respectively positioned on the upper right side and the lower right side of the pump oil cavity 4, in the reference figure, the rotor 2 rotates clockwise, the top end of the arc-shaped through hole 81 is positioned at the position of the outer wall of the rotor 2 far away from the inner wall of the pump oil cavity 4, the first piston head 82, the second piston head 83 and the arc rod 84 are respectively and fixedly connected with the upper end and the lower end of the arc rod 84, the screw hole 85 is arranged on the right side of the stator 1 and is communicated with the arc-shaped through hole 81, the, the positioning protrusion 810 is arranged on the inner wall of the arc-shaped through hole 81 and located above the screw hole 85, the positioning ring 89 is fixedly connected to the arc rod 84 and located between the positioning protrusion 810 and the screw hole 85, two ends of the return spring 88 are respectively contacted with the positioning ring 89 and the positioning protrusion 810, the pressure in the pump oil cavity 4 is converted into thrust through the pressurizing mechanism 8, and along with the movement of oil in the pump oil cavity 4, on one hand, the rotating impact force is applied to the rotor 2, on the other hand, the oil is pressed into the oil supply notch 10 to accelerate the ejection of the vane 72, and the working efficiency of the vane.

The radian of pressure regulating arc board 87 is the same with arc rod 84, and pressure regulating arc board 87's inner wall bonds has cushion 9, and the design that utilizes pressure regulating arc board 87 can utilize it to exert pressure to arc rod 84, and then adjusts arc rod 84's reaction rate, can adjust according to the oil service conditions of reality.

The cushion 9 is a rubber cushion, lubricating oil is filled between the first piston head 82 and the second piston head 83 in the arc-shaped through hole 81, the return spring 88 is the extension spring 73, and the return spring 88 is used for assisting the return of the arc plate 84 and limiting the moving direction of the arc rod 84.

The length of the arc rod 84 is one-half of the length of the arc-shaped through hole 81, and the length of the piston head one 82 and the piston head two 83 is one-fourth of the length of the arc-shaped through hole 81.

When the return spring 88 is in a balanced state, the arc rod 84 is overlapped with the center of the arc perforation 81, and oil supply notches 10 are formed in the positions, close to the bottom wall of the vane groove 71, of the two side walls of the vane groove 71.

The axle center of the sealing cover 3 coincides with the axle center of the stator 1, the top end of the inner wall of the arc-shaped perforation 81 is provided with a leak hole 11, the other end of the leak hole 11 is positioned at the back of the stator 1, the sealing cover 3 is internally provided with a U-shaped hole 12, one end of the U-shaped hole 12 is communicated with the leak hole 11, the other end of the U-shaped hole 12 is positioned on the running track of the oil supply gap 10, when the vane pump operates, on one hand, high-pressure oil can push a piston head 82 to transfer pressure to push the rotor 2 to rotate, on the other hand, the high-pressure oil enters through the leak hole 11 and enters the oil supply gap 10 through the U-shaped hole 12 to push the vane 72 to pop up rapidly, the front side of the sealing cover 3 and the left side corresponding to the pump oil cavity 4 is also provided with an oil drainage groove 13, the bottom end of the oil drainage groove 13 is, when the vane 72 is pressed into the vane groove 71, the right vane which has entered through the U-shaped hole 12 can be pressed into between the rotor 2 and the inner wall of the pump oil chamber 4 through the oil drain groove 13, and pressurized to realize high-speed operation of the vane pump.

This vane pump with indent formula blade during operation, vane pump installation back, rotor 2 is driven by the drive shaft and is rotated in pump oil chamber 4 and carry out the oil pumping operation, at the in-process of pump oil, along with the rotation of rotor 2, the oil in pump oil chamber 4 is impressed in arc perforation 81 and small opening 11, arc rod 84 pressurized motion shifts pressure to pump oil chamber 4 downside and promotes blade 72, the oil that gets into in small opening 11 strikes one side that blade 72 is close to blade groove 71 diapire and makes the blade pop out fast, along with rotor 2 rotates, can impress through draining groove 13 when blade 72 is impressed in the blade groove 71 before between rotor 2 and the 4 inner walls of pump oil chamber with the right piece that gets into through U-shaped hole 12, pressurize is in order to realize vane pump's high-speed operation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.