CN205842179U

CN205842179U - Air pressure pump with feeding pressure stabilizing device

Info

Publication number: CN205842179U
Application number: CN201620803200.5U
Authority: CN
Inventors: 吴延勃
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-28
Filing date: 2016-07-28
Publication date: 2016-12-28
Anticipated expiration: 2026-07-28

Abstract

This application discloses the air pressure pump of a kind of band feeding pressure stabilizing device, including the pump housing having rotor chamber, for the pump cover covered mutually with the pump housing and pressure limiting valve, the internal rotor being the most sequentially socketed is set in rotor chamber, outer rotor and eccentric hoop, internal rotor is socketed and is fixed on pump shaft, described pressure limiting valve includes steel ball, spring, regulate screw and for being fixed on the pump housing and the nut of regulation screw composition screw thread pair, described spring housing one end is on regulation screw, steel ball promotes spring to stretch in the first radial hole along the length direction of regulation screw under the pressure of machine oil.The application provides the benefit that: use pressure limiting valve, when air pressure pump is when just starting working, engine oil viscosity is big, pressure is big, machine oil promotes steel ball motion, makes part machine oil extrude recycling from oil leak hole, reduces the amount of the machine oil extruded from oil outlet, go out to produce certain buffering to oil pressure, prevent engine oil pressure excessive and wash out pad.

Description

Air pressure pump with feeding pressure stabilizing device

Technical field

The application relates to the air pressure pump of a kind of band feeding pressure stabilizing device.

Background technology

Air pressure pump effect be machine oil is brought up to certain pressure after, be sent to the moving surface of each part of electromotor forcibly On, the direct force feed of machine oil in the existing air pressure pump pump housing is to electromotor each part movement surface, in the work process of air compressor machine In, the length of oil temperature working time therewith changes the most therewith, and the relative temperature of machine oil is the lowest, and its viscosity is the highest, oil The pressure of pump is the highest；The relative temperature of machine oil is the highest, and machine oil viscosity is the lowest, and the pressure of machine oil is the lowest, and air pressure pump is just The when of starting working, the temperature of machine oil is room temperature, belongs to low temperature state, and its viscosity is higher, and pressure is relatively big, along with air compressor machine Work, the temperature of machine oil gradually rises, and the temperature of machine oil reaches as high as spending 100 more, and now the pressure of machine oil is big, therefore at pneumatics The when that pump just being started working, air pressure pump can be because the engine oil pressure extruded be crossed conference and is caused washing out pad and cause lubricating oil leakage Deng, damage miscellaneous part；It addition, existing air pressure pump can not realize automatic reverse, turning to of air pressure pump is in use Immutable, as input turns to contrary, then air pressure pump can not work, and also can bring the serious consequence of engine damage.Work as needs When turning to, air pressure pump need to be taken off, then take out the internal rotor in rotor chamber, outer rotor and eccentric hoop, and by the bottom of eccentric hoop Alignment pin on face reinserts hole, corresponding location inner position on rotor chamber bottom surface after extracting, complete in the way of manually Turning to, then after being re-assemblied by whole air pressure pump, can use, this makes to use quite inconvenience；3rd, existing air pressure pump Assemble loaded down with trivial details, poor sealing performance.The pump cover of existing air pressure pump typically overlays pump housing top, then affixed by securing member, The large end face being used for installing pump cover on the pump housing is usually plane, and polarization when this not only makes pump cover install is poor, assembles loaded down with trivial details, And it is difficult to ensure that the sealing that pump cover is connected with the pump housing, oil leakage phenomenon easily occurs during use.

Summary of the invention

The purpose of the application is to provide the air pressure pump of a kind of band feeding pressure stabilizing device, solves air pressure pump in prior art and just opens During beginning work, oil temperature is low, viscosity is big, pressure is big, and the engine oil pressure that air pressure pump extrudes is too high and easily washes out miscellaneous part Technological deficiency.

For solving the problems referred to above, the application is adopted the technical scheme that: the air pressure pump of a kind of band feeding pressure stabilizing device, bag Include and be provided with the pump housing of rotor chamber, the internal rotor being the most sequentially socketed is set in the pump cover covered with the pump housing, rotor chamber And outer rotor, described internal rotor is socketed and is fixed on pump shaft, and one end of pump shaft is used for connecting driving means also through pump cover And pump shaft is rotationally connected with pump cover, the other end of pump shaft is rotationally connected with the pump housing, the described pump housing has and runs through inside and outside the pump housing The first radial hole and for connecting the second radial hole of oil suction chamber, described pump cover has the communicated with the first radial hole Three radial holes and the 4th radial hole communicated with the second radial hole, described pump shaft has oil outlet along its length, goes out The bottom of oilhole can communicate with the 3rd radial hole, the bottom of pump cover have the first axial hole that top communicates with the 3rd radial hole and The second axial hole that top communicates with the 4th radial hole, also includes pressure limiting valve, described pump cover has bottom with the 3rd radially The oil leak hole that hole communicates, the 3rd described radial hole diameter near pump shaft one end is less than the diameter of the other end, and oil leak hole Communicating with the 3rd radial hole being relatively large in diameter side, the 3rd radial hole of side less with diameter, the first axial hole communicates, described Pressure limiting valve include steel ball, spring, regulation screw and for be fixed on the pump housing and regulation screw constitute screw thread pair nut, institute The spring housing one end stated is on regulation screw, and steel ball promotes spring to exist along the length direction of regulation screw under the pressure of machine oil Stretch in first radial hole.

When in the application, air pressure pump is just started working, oil temperature is relatively low, and viscosity is big, and pressure is relatively big, and machine oil promotes steel ball Compression spring is shunk, and steel ball is laterally away from a lateral movement of pump shaft from being positioned at oil leak hole near the one of pump shaft, and part machine oil is from letting out Extrude in oilhole, thus reduce the pressure of oil outlet inner engine oil, thus protect pad and miscellaneous part, prevent lubricating oil leakage, And the machine oil extruded by oil leak hole is again returned oil suction chamber and re-used, after air pressure pump works a period of time, oil temperature Raising, viscosity reduces, and pressure reduces, and now the insufficient pressure of machine oil is to promote steel ball compression spring, and spring extends, and promotes steel ball Moving in direction towards pump shaft, stops that machine oil extrudes from oil leak hole, and machine oil normally extrudes from oil outlet, can be by adjusting in the application Joint screw precession the first radial hole in the degree of depth adjust machine oil pressure, regulation screw precession the first radial hole in the most, steel The elastic force that ball extrusion spring produces is the biggest, and spring is the biggest to the counteracting force of steel ball, and thus adjustable machine oil can be from draining The minimum pressure that pore pressure goes out, thus limit the pressure of machine oil that oilhole extrudes, actually used in adjust regulation spiral shell as required Length in nail precession the first radial hole.

As the further improvement of the application, also including box nut, described box nut and regulation screw are away from steel ball Threaded one end coordinates.

After the application uses box nut and nut screwing clamping, the axial force produced between box nut and nut, make the spiral shell of nut Frictional force between the screw thread of stricture of vagina and regulation screw increases and prevents nut from automatically getting loose, and further strengthens stablizing of pressure limiting valve Property.

As the further improvement of the application, the bottom of described eccentric hoop is provided with the semi-circular locating piece of projection, described Rotor chamber bottom surface be provided with the block of projection, described block and aforementioned locating piece are with the use of, any one end of locating piece When encountering block, eccentric hoop positions.

Traditional eccentric hoop location mode is to arrange an alignment pin on the bottom surface of eccentric hoop, on the bottom surface of rotor chamber Arrange two give hole, symmetrically arranged location, alignment pin optionally insert any one location hole in, and complete eccentric hoop with The location of the pump housing, when air pressure pump needs to turn to when, needs rotor chamber is opened manually, manually alignment pin is changed to another Hole, location inner position.This process is loaded down with trivial details, and when manually turning to, machine cannot work, and impact produces, and is not convenient to use；This Shen The mode that semi-circular locating piece please be used to coordinate with block realizes the location of eccentric hoop, when air pressure pump rotates forward, and locating piece One end prop up block, eccentric hoop positions, and when air pressure pump turns to, eccentric hoop is rotating in same direction 180 ° under the drive of outer rotor, Until the other end of locating piece props up block, locating piece is reorientated, and air pressure pump is automatically performed commutation, it is not necessary to shuts down and changes, just In using operation.

As the further improvement of the application, on the described pump housing for install the large end face of pump cover along rotor chamber radial direction to Sunken inside is stepped hole, and pump cover embeds in stepped hole, pump cover and stepped hole tight fit connection, and the pump housing passes through fastening with pump cover Part is affixed, and the bottom of the pump housing is provided with the oil groove of indent, and is provided with oil sealing at oil groove, described oil sealing has pump shaft and supports Hole, the end of described pump shaft is stretched in pump shaft supported hole.

This design, improves accuracy and the positioning intensity of pump cover location, makes pump cover location more accurate, pump cover and the pump housing Connection more firm, simplify assemble flow, improve work efficiency, also make the sealing of whole air pressure pump be guaranteed, Stop the generation of permeability phenomenon.

As the further improvement of the application, described oil sealing top sets oil sealing chamber, the pump housing is additionally provided with oil-recovery tank, oil-recovery tank Being positioned at outer rotor bottom, and connect oil sealing chamber by spill port, described oil sealing chamber connects with oil suction chamber.

Existing air pressure pump, machine oil, after oil suction chamber flows into, flows out from oil outlet pump after having lubricated air pressure pump again, as produced Leakage of oil, not only results in waste, and pollutes production environment, and this product is by the leakage of gap location between the pump housing and pump shaft Oil sucks in oil suction chamber behind chamber again through oil-recovery tank, spill port, oil sealing, and returns in air pressure pump from newly, and in being formed, circulation, reaches Gap oil leakage collection between the pump housing and pump shaft is got up the purpose recycled, decrease the operating fuel consumption of air pressure pump.

As the further improvement of the application, between the described pump housing and pump cover, sealing ring is set.

Sealing ring is set between the pump housing and pump cover, strengthens the sealing between the pump housing and pump cover, further prevent machine Oil leakage, keeps machine oil hydraulic.

In sum, the application provides the benefit that: use pressure limiting valve, and when air pressure pump is when just starting working, machine oil glues Degree is big, and pressure is big, and machine oil promotes steel ball motion, makes part machine oil extrude recycling from oil leak hole, reduces and extrude from oil outlet The amount of machine oil, go out to produce certain buffering to oil pressure, prevent engine oil pressure excessive and wash out pad, and air compressor machine starts work After making a period of time, oil temperature raises, and year reduces, and pressure reduces, and spring promotes steel ball to move to pump shaft direction, stops machine Oil extrudes from drain tap；The application can realize automatic reverse, and assembling is simple, good seal performance, does not haves leakage of oil, structure letter Single.

Accompanying drawing explanation

Fig. 1 is the structural representation of the application.

Fig. 2 is the three-dimensional exploded view of the application.

Wherein: 1, the pump housing；2, pump cover；3, internal rotor；4, outer rotor；5, pump shaft；6, the first radial hole；7, second radially Hole；8, the 3rd radial hole；9, the 4th radial hole；10, oil outlet；11, the first axial hole；12, the second axial hole；13, oil leak hole； 14, steel ball；15, spring；16, regulation screw；17, nut；18, box nut；19, eccentric hoop；20, locating piece；21, oil groove；22、 Oil sealing；23, supported hole；24, oil sealing chamber；25, spill port；26, sealing ring；27, oil-recovery tank.

Detailed description of the invention

Below in conjunction with the accompanying drawings the detailed description of the invention of the application is described further.

The air pressure pump of band feeding pressure stabilizing device as depicted in figs. 1 and 2, including be provided with rotor chamber the pump housing 1, for pump Pump cover 2 that body 1 covers and pressure limiting valve, arrange internal rotor 3, outer rotor 4 and the eccentric hoop being the most sequentially socketed in rotor chamber 19, described internal rotor 3 is socketed and is fixed on pump shaft 5, one end of pump shaft 5 through pump cover 2 be used for connecting driving means and Pump shaft 5 is rotationally connected with pump cover 2, and the other end of pump shaft 5 is rotationally connected with the pump housing 1, and the bottom of described eccentric hoop 19 is provided with convex The semi-circular locating piece 20 risen, described rotor chamber bottom surface is provided with the block of projection, described block and aforementioned locating piece 20 With the use of, when block is encountered in any one end of locating piece 20, eccentric hoop 19 positions, for installing pump cover 2 on the described pump housing 1 Large end face is stepped hole along the radially-inwardly depression of rotor chamber, and pump cover 2 embeds in stepped hole, pump cover 2 and stepped hole tight fit Connecting, and the pump housing 1 is affixed by securing member with pump cover 2, the bottom of the pump housing 1 is provided with the oil groove 21 of indent, and sets at oil groove 21 Being equipped with oil sealing 22, described oil sealing 22 has pump shaft supported hole 23, pump shaft supported hole 23 is stretched in the end of described pump shaft 5 In.

Pump shaft 5 rotates under the drive of motor, and on pump shaft 5, the internal rotor 3 of socket also and then rotates, and outer rotor 4 is because of engagement And rotate, outer rotor 4 rotates the one end driving eccentric hoop 19 to rotate up to locating piece 20 and props up block, and eccentric hoop 19 positions, when Internal rotor 3 and outer rotor 4 engage each other rotation and the cooperation of eccentric hoop 19, can carry out pump oil；When motor commutation, internal rotor 3 Driving outer rotor 4 to rotate backward, and then drive the reverse 180 ° of deflections of eccentric hoop 19, the other end to locating piece 20 props up block, Eccentric hoop 19 positions again, and air pressure pump is automatically performed commutation, and it is constant that the application realizes inlet and outlet of fuel channel by the rotation of eccentric hoop 19 Constant two-way pump oil.

Have on the described pump housing 1 and run through the first radial hole 6 inside and outside the pump housing 1 and the second radial direction for connecting oil suction chamber Hole 7, described pump cover 2 has the 3rd radial hole 8 communicated with the first radial hole 6 and the communicate with the second radial hole 7 the 4th Radial hole 9, described pump shaft 5 has oil outlet 10 along its length, and the bottom of oil outlet 10 can be with the 3rd radial hole 8 phase Logical, the bottom of pump cover 2 has the first axial hole 11 and top that top communicates with the 3rd radial hole 8 and communicates with the 4th radial hole 9 The second axial hole 12, described pump cover 2 has the oil leak hole 13 that communicates with the 3rd radial hole 8 of bottom, the 3rd described footpath To hole 8, diameter near pump shaft 5 one end is less than the diameter of the other end, and oil leak hole 13 and be relatively large in diameter the 3rd of side radially Hole 8 communicates, and the 3rd radial hole 8 of the first side less with diameter, axial hole 11 communicates, and described pressure limiting valve includes steel ball 14, bullet Spring 15, regulation screw 16, box nut 18 and constitute the nut 17 of screw thread pair, institute with regulation screw 16 for being fixed on the pump housing 1 The spring 15 stated overlaps one end and is regulating on screw 16, and steel ball 14 promotes spring 15 along regulation screw 16 under the pressure of machine oil Length direction is flexible in the first radial hole 6, and described box nut 18 is joined away from the threaded one end of steel ball 14 with regulation screw 16 Close.After in the application, air pressure pump works a period of time, oil temperature raises, and pressure diminishes, and steel ball 14 is under the promotion of spring 15 Being positioned at the oil leak hole 13 side near pump shaft 5, thus stop that machine oil releases from oil leak hole 13, machine oil enters the second footpath from oil suction chamber To hole 7, and by the 4th radial hole 9 communicated with the second radial hole 7 and the second axial hole 12 communicated with the 4th radial hole 9 Between press-in internal rotor 3 and outer rotor 4, internal rotor 3 and outer rotor 4 are axial to first by machine oil extruding in relative rotational motion In hole 11, and it is pressed in oil outlet 10 via the 3rd radial hole 8 communicated with the first axial hole 11, and is extruded by oil outlet 10 Moving surface to each part of electromotor；And air pressure pump is when just starting working, the temperature of machine oil is room temperature, and its viscosity is higher, Pressure is relatively big, and now machine oil can promote steel ball 14 compression spring 15 to steel ball 14 to be positioned at the oil leak hole 13 side away from pump shaft 5, portion Extension set oil extrudes in oil leak hole 13, thus reduces the pressure of oil outlet 10 inner engine oil, thus protects pad and miscellaneous part, Prevent lubricating oil leakage, and the machine oil extruded by oil leak hole 13 is again returned oil suction chamber and recycled.

Described oil sealing 22 top sets oil sealing chamber 24, and the pump housing 1 is additionally provided with oil-recovery tank 27, and oil-recovery tank 27 is positioned at outer rotor 4 times Portion, and connect oil sealing chamber 24 by spill port 25, described oil sealing chamber 24 is for connecting with oil suction chamber.Between between the pump housing 1 and pump shaft 5 Leakage of oil at gap sucks in oil suction chamber behind oil-recovery tank 27, spill port 25, oil sealing chamber 24 again, and returns in air pressure pump from newly, Circulation in being formed, reach to get up the gap oil leakage collection between the pump housing 1 and pump shaft 5 purpose recycled, and decreases pneumatics Fuel consumption in pump operation.

Arranging sealing ring 26 between the described pump housing 1 and pump cover 2, sealing ring 26 is positioned at the top of pump cover 2, in order to strengthen pump Sealing property between body 1 and pump cover 2, prevents the gap oil leakage between the pump housing 1 and pump cover 2, further stablizes oil pressure.

All present specification are prior art for be specifically noted or be capable of by existing technology, It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted, and all this A little modifications and variations all should belong to the protection domain of the application claims.

Claims

1. an air pressure pump for band feeding pressure stabilizing device, including being provided with the pump housing (1) of rotor chamber, for covering with the pump housing (1) Pump cover (2), arranges the internal rotor (3) being the most sequentially socketed and outer rotor (4), described internal rotor (3) set in rotor chamber Connecing and be fixed on pump shaft (5), one end of pump shaft (5) is used for connecting driving means and pump shaft (5) and pump cover through pump cover (2) (2) being rotationally connected, the other end of pump shaft (5) is rotationally connected with the pump housing (1), the described pump housing (1) has and runs through in the pump housing (1) Outer the first radial hole (6) and the second radial hole (7) for connecting oil suction chamber, described pump cover (2) has and the first footpath The 3rd radial hole (8) communicated to hole (6) and the 4th radial hole (9) communicated with the second radial hole (7), described pump shaft (5) On have oil outlet (10) along its length, the bottom of oil outlet (10) can communicate with the 3rd radial hole (8), pump cover (2) Bottom has the first axial hole (11) that top communicates with the 3rd radial hole (8) and top communicates with the 4th radial hole (9) the Two axial hole (12), it is characterised in that: also include pressure limiting valve, described pump cover (2) has bottom and the 3rd radial hole (8) phase Logical oil leak hole (13), the 3rd described radial hole (8) diameter near pump shaft (5) one end is less than the diameter of the other end, and Oil leak hole (13) communicates with the 3rd radial hole (8) being relatively large in diameter side, the of the first axial hole (11) and the less side of diameter Three radial holes (8) communicate, and described pressure limiting valve includes steel ball (14), spring (15), regulation screw (16) and is used for being fixed on pump The upper nut (17) constituting screw thread pair with regulation screw (16) of body (1), described spring (15) set one end is in regulation screw (16) On, steel ball (14) promotes spring (15) along the length direction of regulation screw (16) at the first radial hole under the pressure of machine oil (6) stretch in.

The air pressure pump of band feeding pressure stabilizing device the most according to claim 1, it is characterised in that: also include box nut (18), Described box nut (18) coordinates away from the threaded one end of steel ball (14) with regulation screw (16).

The air pressure pump of band feeding pressure stabilizing device the most according to claim 1 and 2, it is characterised in that: outside also including being sleeved on Eccentric hoop (19) on rotor (4), the bottom of described eccentric hoop (19) is provided with the semi-circular locating piece (20) of projection, described Rotor chamber bottom surface is provided with the block of projection, and described block and aforementioned locating piece (20) are with the use of, appointing of locating piece (20) When block is encountered in meaning one end, eccentric hoop (19) positions.

The air pressure pump of band feeding pressure stabilizing device the most according to claim 3, it is characterised in that: the described pump housing is used on (1) The large end face of installation pump cover (2) is stepped hole along the radially-inwardly depression of rotor chamber, and pump cover (2) embeds in stepped hole, pump cover (2) with stepped hole tight fit connection, and the pump housing (1) is affixed by securing member with pump cover (2), and the bottom of the pump housing (1) is provided with indent Oil groove (21), and oil groove (21) place is provided with oil sealing (22), and described oil sealing (22) has pump shaft supported hole (23), institute The end of the pump shaft (5) stated is stretched in pump shaft supported hole (23).

The air pressure pump of band feeding pressure stabilizing device the most according to claim 4, it is characterised in that: described oil sealing (22) top sets Oil sealing chamber (24), the pump housing (1) is additionally provided with oil-recovery tank (21), and oil-recovery tank (21) is positioned at outer rotor (4) bottom, and passes through spill port (25) connection oil sealing chamber (24), described oil sealing chamber (24) is for connecting with oil suction chamber.

The air pressure pump of band feeding pressure stabilizing device the most according to claim 1 and 2, it is characterised in that: the described pump housing (1) with Sealing ring (26) is set between pump cover (2).