阅读说明：本技术 一种大排量高压齿轮泵 (Large-discharge high-pressure gear pump ) 是由 王标 徐志驰 李亮 郭钰 蔡伟 于 2020-12-28 设计创作，主要内容包括：本发明涉及齿轮泵技术领域,具体涉及一种大排量高压齿轮泵；本发明包括壳体组件、第一齿轮组件、第二齿轮组件和导流组件,壳体组件包括主壳、前盖和后盖,主壳上设有贯穿其前、后端的第一通槽和第二通槽,第一通槽和第二通槽的中部横向连通,主壳处于第一通槽一端的中部侧壁上设有导通其内部的进液管,主壳上、下两端侧壁处于第二通槽的位置处均设有导通其内部的主管,主壳处于第二通槽一端的侧壁上设有三通管,三通管的两个支管分别导通第二通槽的上、下两端,第一齿轮组件包括主动齿轮和从动齿轮,第二齿轮组件包括驱动齿轮和内齿轮；本发明能够有效地解决现有技术存在排量提升效果较小和适用范围较窄等问题。(The invention relates to the technical field of gear pumps, in particular to a large-discharge high-pressure gear pump; the invention comprises a shell assembly, a first gear assembly, a second gear assembly and a flow guide assembly, wherein the shell assembly comprises a main shell, a front cover and a rear cover, the main shell is provided with a first through groove and a second through groove which penetrate through the front end and the rear end of the main shell, the middle parts of the first through groove and the second through groove are transversely communicated, the side wall of the middle part of one end of the main shell, which is positioned at the first through groove, is provided with a liquid inlet pipe for communicating the interior of the main shell, the side walls of the upper end and the lower end of the main shell, which are positioned at the second through groove, are provided with main pipes for communicating the interior of the main shell, the side wall of one end of the main shell, which is positioned at the second through groove, is provided with a three-way pipe, two; the invention can effectively solve the problems of small displacement lifting effect, narrow application range and the like in the prior art.)

1. The utility model provides a big discharge capacity high pressure gear pump which characterized in that: the device comprises a shell assembly, a first gear assembly, a second gear assembly and a flow guide assembly;

the shell assembly comprises a main shell, a front cover and a rear cover which are detachably and respectively fixed at the front end and the rear end of the main shell in a sealing way, the main shell is provided with a first through groove and a second through groove which penetrate through the front end and the rear end of the main shell, the notches of the first through groove and the second through groove are of the shapes which are equal in size at the upper end and the lower end and are similar to the number of 8, the middle parts of the first through groove and the second through groove are transversely communicated, the size of the first through groove is larger than that of the second through groove, a liquid inlet pipe communicated with the inside of the main shell is arranged on the side wall of the middle part of one end of the first through groove, the side walls of the upper end and the lower end of the main shell are provided with main pipes for communicating the inner parts of the main pipes at the positions of the second through grooves, a three-way pipe is arranged on the side wall of the main shell at one end of the second through groove, two branch pipes of the three-way pipe are respectively communicated with the upper end and the lower end of the second through groove, and electromagnetic flow valves are arranged on the main pipe and the branch pipes;

the first gear assembly comprises a driving gear and a driven gear, the driving gear is respectively arranged at the upper end and the lower end of the first through groove, and the driving gear is meshed with the driven gear;

the second gear assembly comprises a driving gear and an internal gear, the upper end and the lower end of the second through groove are respectively and movably provided with the internal gear matched with the second through groove, the driving gear is eccentrically meshed in the internal gear, a crescent plate matched with the driving gear is further arranged in the internal gear, and liquid penetrating holes are uniformly formed in the side wall of the internal gear in a penetrating mode;

the flow guide assembly is arranged in the area where the middle parts of the first through groove and the second through groove are communicated.

2. The large displacement high pressure gear pump of claim 1, wherein the main housing, the front cover and the rear cover are detachably fixed by a set of bolts, and the side walls of the front and rear ends of the main housing at the notches of the first through groove and the second through groove are provided with snap teeth matching with the shapes of the first through groove and the second through groove.

3. The large-discharge high-pressure gear pump according to claim 2, wherein the inner side walls of the front cover and the rear cover are respectively provided with a catching groove matched with the corresponding side catching teeth, and the catching grooves are respectively and detachably provided with a sealing gasket matched with the catching grooves.

4. The large-discharge high-pressure gear pump according to claim 1, wherein a driving shaft is fixed on the driving gear, driving shafts are fixed on the driving gears, a rotating shaft matched with the driven gear is fixed on the rear cover, a first rotating groove and a second rotating groove matched with the driving shaft and the driving shaft are respectively arranged on the rear cover, a first shaft groove and a second shaft groove matched with the driving shaft and the driving shaft are respectively penetrated on the front cover, and a circular groove matched with the rotating shaft is further formed on the inner side wall of the front cover; the shaft body of the driving shaft is hermetically penetrated in the first shaft groove, and the shaft body of the driving shaft is hermetically penetrated in the second shaft groove.

5. The large capacity high pressure gear pump of claim 1, wherein said flow directing assembly includes a pair of airfoils distributed in a manner larger than a horn along said first through slot to said second through slot, with said airfoils being on opposite inner sides with said airfoils not contacting each other.

6. The large-discharge high-pressure gear pump according to claim 1 or 5, wherein a pair of first limiting grooves matched with the wing-shaped plate are formed in the inner side walls of the front cover and the rear cover, and a pair of second limiting grooves matched with the crescent plate are formed in the inner side walls of the front cover and the rear cover.

7. A large capacity high pressure gear pump according to claim 1, wherein the central axes of the fluid holes are inclined to the direction of rotation of the internal gear, and the phase of the port of the outer side wall of the internal gear at the time of rotation of the internal gear is advanced from the phase of the port of the inner side wall of the internal gear.

8. The high capacity and high pressure gear pump of claim 1, wherein the electromagnetic flow valve is controlled by an external controller.

9. The large capacity high pressure gear pump of claim 4, wherein the drive shaft and the drive shaft are independently driven by an external motor.

10. The high capacity and high pressure gear pump of claim 1, wherein the displacement capacity of the first gear assembly is equal to the sum of the displacement capacities of the two sets of second gear assemblies.

Technical Field

The invention relates to the technical field of gear pumps, in particular to a large-discharge high-pressure gear pump.

Background

Gear pumps are rotary pumps that deliver or pressurize fluid by virtue of the change in working volume and movement created between a pump cylinder and a meshing gear. The gear pump is one of the power elements of the hydraulic system, and has the advantages of simple structure, small volume, light weight, good self-absorption performance, strong pollution resistance and the like, so that the gear pump still obtains wide matching application in the walking operation machinery industry.

In the application number: CN201620015734.1 discloses a large-displacement high-pressure gear pump, which includes a pump cover and a pump body; the open end of the pump body is provided with a gear chamber for accommodating a pair of meshing gear pairs, and two end faces of the gear pairs are respectively provided with a floating side plate of which the appearance is matched with that of the gear chamber; one surface of the floating side plate, which is close to the end face of the gear pair, is the front surface of the floating side plate, the other surface of the floating side plate is the back surface of the floating side plate, the back surface of the floating side plate is provided with an omega-shaped groove, and an omega-shaped sealing ring matched with the omega-shaped groove in shape is arranged in the omega-shaped groove; both ends of the omega-shaped sealing ring are provided with extension structures and triangular end structures connected to the extension structures; high nip and low-pressure area are separated into with the cavity to the curb plate that floats, the positive high nip of curb plate that floats is provided with rectangle off-load groove, the positive low-pressure area of curb plate that floats is provided with the low pressure lubrication groove, the utility model has the advantages of the discharge capacity is big, and simple structure has hydraulic pressure automatic compensation ability, and noise reduction strengthens sealed, and reduce cost improves gear pump work efficiency and operating pressure.

However, it still has the following disadvantages in structure:

firstly, the displacement lifting effect is small, and a large amount of oil returns from the high-pressure cavity to the low-pressure cavity from the position of the meshing position between the driving gear and the driven gear along the motion tangential direction;

second, the application range is narrow because it has only one fixed output, which makes it possible to drive only one load with one pump.

Disclosure of Invention

Solves the technical problem

Aiming at the defects in the prior art, the invention provides a large-discharge high-pressure gear pump which can effectively solve the problems of small discharge capacity improving effect, narrow application range and the like in the prior art.

Technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a large-discharge high-pressure gear pump comprises a shell assembly, a first gear assembly, a second gear assembly and a flow guide assembly;

the shell assembly comprises a main shell, a front cover and a rear cover which are detachably and respectively fixed at the front end and the rear end of the main shell in a sealing way, the main shell is provided with a first through groove and a second through groove which penetrate through the front end and the rear end of the main shell, the notches of the first through groove and the second through groove are of the shapes which are equal in size at the upper end and the lower end and are similar to the number of 8, the middle parts of the first through groove and the second through groove are transversely communicated, the size of the first through groove is larger than that of the second through groove, a liquid inlet pipe communicated with the inside of the main shell is arranged on the side wall of the middle part of one end of the first through groove, the side walls of the upper end and the lower end of the main shell are provided with main pipes for communicating the inner parts of the main pipes at the positions of the second through grooves, a three-way pipe is arranged on the side wall of the main shell at one end of the second through groove, two branch pipes of the three-way pipe are respectively communicated with the upper end and the lower end of the second through groove, and electromagnetic flow valves are arranged on the main pipe and the branch pipes;

the first gear assembly comprises a driving gear and a driven gear, the driving gear is respectively arranged at the upper end and the lower end of the first through groove, and the driving gear is meshed with the driven gear;

the second gear assembly comprises a driving gear and an internal gear, the upper end and the lower end of the second through groove are respectively and movably provided with the internal gear matched with the second through groove, the driving gear is eccentrically meshed in the internal gear, a crescent plate matched with the driving gear is further arranged in the internal gear, and liquid penetrating holes are uniformly formed in the side wall of the internal gear in a penetrating mode;

the flow guide assembly is arranged in the area where the middle parts of the first through groove and the second through groove are communicated.

Furthermore, the main shell, the front cover and the rear cover are detachably fixed through a group of bolts, and buckling teeth matched with the main shell in shape are arranged at the side walls of the front end and the rear end of the main shell, which are positioned at the notches of the first through groove and the second through groove.

Furthermore, the inner side walls of the front cover and the rear cover are respectively provided with a buckling groove matched with the corresponding side buckling teeth, and the buckling grooves are respectively and detachably provided with a sealing ring pad matched with the buckling grooves.

Furthermore, a driving shaft is fixed on the driving gear, driving shafts are fixed on the driving gears, a rotating shaft matched with the driven gear is fixed on the rear cover, a first rotating groove and a second rotating groove matched with the driving shaft and the driving shaft are respectively formed in the rear cover, a first shaft groove and a second shaft groove matched with the driving shaft and the driving shaft are respectively penetrated through the front cover, and a circular groove matched with the rotating shaft is further formed in the inner side wall of the front cover; the shaft body of the driving shaft is in sealed penetrating connection with the first shaft groove, and the shaft body of the driving shaft is in sealed penetrating connection with the second shaft groove.

Still further, the air guide assembly comprises a pair of wing plates, the pair of wing plates are distributed in a mode of being larger than a horn shape along the direction from the first through groove to the second through groove, cambered surfaces of the wing plates are located on opposite inner sides, and the wing plates are not in contact with each other.

Furthermore, a pair of first limiting grooves matched with the wing-shaped plate are formed in the inner side walls of the front cover and the rear cover, and a pair of second limiting grooves matched with the crescent plate are formed in the inner side walls of the front cover and the rear cover.

Further, the central axes of the liquid-permeable holes are inclined to the rotating direction of the internal gear, and the phase of the hole of the outer side wall of the internal gear at the rotating time of the internal gear is ahead of the phase of the hole of the inner side wall of the internal gear.

Further, the electromagnetic flow valve is controlled by an external controller.

Furthermore, the driving shaft and the driving shaft are independently driven by an external motor respectively.

Further, the liquid discharge amount of the first gear assembly is equal to the sum of the liquid discharge amounts of the two sets of second gear assemblies.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

1. the invention adds a main shell and a front cover and a rear cover which are detachably and respectively fixed at the front end and the rear end of the main shell in a sealing way, the main shell is provided with a first through groove and a second through groove which penetrate through the front end and the rear end of the main shell, the notches of the first through groove and the second through groove are both in the shape of the same size as the upper end and the lower end and similar to the figure of 8, the middle parts of the first through groove and the second through groove are transversely communicated, a first gear component comprises a driving gear and a driven gear, the driving gear is respectively arranged at the upper end and the lower end of the first through groove and is meshed with the driven gear, a second gear component comprises a driving gear and an inner gear, the upper end and the lower end of the second through groove are both movably provided with inner gears matched with the second through groove, the inner gear is eccentrically meshed with the driving gear, the inner gear is also provided with a crescent plate, the diversion assembly is arranged in a region where the middle parts of the first through groove and the second through groove are communicated, the diversion assembly comprises a pair of wing plates, the pair of wing plates are distributed in a mode of being larger than a standard number along the direction from the first through groove to the second through groove, the cambered surfaces of the wing plates are positioned on the opposite inner sides, and the wing plates are not in contact with each other; therefore, the two internal gear pumps formed by the two second gear assemblies can suck and discharge the oil discharged by the external gear pump formed by the first gear assembly, and the amount of the oil flowing back from the high-pressure cavity to the low-pressure cavity can be better reduced under the coordination of the flow guide assembly; the effect of effectively improving the actual discharge capacity of the gear pump is achieved.

2. The invention is characterized in that a liquid inlet pipe for conducting the interior of the main shell is arranged on the side wall of the middle part of one end of the first through groove by adding the main shell, main pipes for conducting the interior of the main shell are arranged at the positions of the side walls of the upper end and the lower end of the main shell, which are positioned in the second through groove, a three-way pipe is arranged on the side wall of one end of the main shell, which is positioned in the second through groove, two branch pipes of the three-way pipe are respectively communicated with the upper end and the lower end of the second through groove, electromagnetic flow valves are respectively arranged on the main pipe and the branch pipes, a driving shaft is fixed; therefore, the gear pump can drive a plurality of loads with different powers by controlling the on-off of the electromagnetic flow valve; the effect of effectively improving the application range of the product is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a pictorial view of the present invention from a first perspective;

FIG. 2 is a pictorial view of the present invention from a first perspective;

FIG. 3 is an exploded view of the present invention from a third perspective;

FIG. 4 is a pictorial view of the inside of the bezel of the present invention at one end of the viewing angle;

FIG. 5 is a pictorial view of the inside end of the rear cover of the present invention at a viewing angle;

FIG. 6 is a pictorial view of the main housing at a third viewing angle in accordance with the present invention;

FIG. 7 is a pictorial view of the main housing of the present invention in partial cross-section at a third viewing angle;

FIG. 8 is a pictorial view of the crescent and the aerofoil of the present invention;

FIG. 9 is a pictorial view of an internal gear of the present invention, partially in section;

FIG. 10 is a pictorial view of the gasket of the present invention;

FIG. 11 is a pictorial view of the drive gear, slave gear and drive gear from a fourth perspective of the present invention;

FIG. 12 is a pictorial view of the drive gear, slave gear and drive gear from a fifth perspective of the present invention;

FIG. 13 is a plan view of the present invention with the front cover removed;

the reference numerals in the drawings denote: 1-a main shell; 2-front cover; 3-rear cover; 4-a first through slot; 5-a second through groove; 6-liquid inlet pipe; 7-main pipe; 8-a three-way pipe; 9-an electromagnetic flow valve; 10-a drive gear; 11-a driven gear; 12-a drive gear; 13-internal gear; 14-a crescent moon plate; 15-liquid-permeable pores; 16-bolt; 17-a buckle tooth; 18-a catching groove; 19-a gasket seal; 20-a drive shaft; 21-a drive shaft; 22-a rotating shaft; 23-a first rotation groove; 24-a second rotational groove; 25-a first axial slot; 26-second axial slots; 27-circular grooves; 28-an airfoil plate; 29-a first limit groove; 30-second limit groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

The large-discharge high-pressure gear pump of the embodiment is as follows, referring to fig. 1-13: the wind guide assembly comprises a shell assembly, a first gear assembly, a second gear assembly and a flow guide assembly.

The shell assembly comprises a main shell 1, a front cover 2 and a rear cover 3 which are detachably and respectively fixed at the front end and the rear end of the main shell 1 in a sealing way, a first through groove 4 and a second through groove 5 which penetrate through the front end and the rear end of the main shell 1 are arranged on the main shell 1, the notches of the first through groove 4 and the second through groove 5 are both in shapes which have the same sizes at the upper end and the lower end and are similar to a number '8', the middle parts of the first through groove 4 and the second through groove 5 are transversely communicated, and the size that first logical groove 4 is greater than the logical groove 5 size of second, it switches on its inside feed liquor pipe 6 to be equipped with on the middle part lateral wall of first logical groove 4 one end to lead to main shell 1, the position department that the upper and lower both ends lateral wall of main shell 1 is in the logical groove 5 of second all is equipped with the person in charge 7 that switches on its inside, main shell 1 is equipped with three-way pipe 8 on the lateral wall that the logical groove 5 one end of second, two branch pipes of three-way pipe 8 switch on the upper and lower both ends that the logical groove 5 of second respectively, all be equipped with electromagnetic flow valve 9 on person in charge 7.

The first gear assembly includes a driving gear 10 and a driven gear 11, the driving gear 10 is disposed at upper and lower ends of the first through slot 4, and the driving gear 10 is engaged with the driven gear 11.

The second gear assembly includes drive gear 12 and internal gear 13, and the second leads to the equal movable mounting in upper and lower both ends of groove 5 and has internal gear 13 with it matches, and the equal eccentric meshing of internal gear 13 inside has drive gear 12, and internal gear 13 inside still is equipped with drive gear 12 complex crescent moon board 14, and even the running through has liquid hole 15 on the lateral wall of internal gear 13.

The diversion assembly is arranged in the area where the middle parts of the first through groove 4 and the second through groove 5 are communicated.

The main shell 1, the front cover 2 and the rear cover 3 are detachably fixed through a group of bolts 16, and buckling teeth 17 matched with the main shell in shape are arranged at the side walls of the front end and the rear end of the main shell 1 and positioned at the notches of the first through groove 4 and the second through groove 5.

All offer on the inside wall of protecgulum 2 and back lid 3 rather than correspond the catching groove 18 that side latch 17 matches, all detachably is equipped with the sealing washer pad 19 that matches with it in the catching groove 18, can guarantee the leakproofness between protecgulum 2, back lid 3 and the main casing 1 so better to prevent oozing of fluid effectively, thereby guarantee the stability of main casing 1 internal pressure effectively.

A driving shaft 20 is fixed on the driving gear 10, driving shafts 21 are fixed on the driving gears 12, a rotating shaft 22 matched with the driven gear 11 is fixed on the rear cover 3, a first rotating groove 23 and a second rotating groove 24 matched with the driving shaft 20 and the driving shaft 21 are respectively arranged on the rear cover 3, a first shaft groove 25 and a second shaft groove 26 matched with the driving shaft 20 and the driving shaft 21 are respectively penetrated through the front cover 2, and a circular groove 27 matched with the rotating shaft 22 is also arranged on the inner side wall of the front cover 2; the shaft body of the drive shaft 20 is sealingly inserted in the first shaft groove 25, and the shaft body of the drive shaft 21 is sealingly inserted in the second shaft groove 26.

The air guide assembly comprises a pair of wing plates 28, the pair of wing plates 28 are distributed in a mode of being larger than a standard number along the direction from the first through groove 4 to the second through groove 5, the cambered surfaces of the wing plates 28 are positioned on the opposite inner sides, and the wing plates 28 are not contacted with each other; according to the bernoulli principle, the flow velocity of oil on the cambered surface side of the airfoil plate 28 is greater than that of oil on the plane side of the airfoil plate, and the movement law of the oil in the main shell 1 is overall that the oil flows from the first through groove 4 to the second through groove 5, so that the oil flowing back from the second through groove 5 to the first through groove 4 can only pass through the plane side of the airfoil plate 28, and when the returned oil reaches the end part of the airfoil plate 28, the oil can be sucked into the second through groove 5 again due to the flow velocity difference on the two sides of the airfoil plate 28.

A pair of first spacing recess 29 that matches with aerofoil 28 all has been seted up on the inside wall of protecgulum 2, back lid 3, still all has seted up a pair of second spacing recess 30 that matches with crescent moon board 14 on the inside wall of protecgulum 2, back lid 3.

The central axes of the liquid permeating holes 15 are all inclined towards the rotating direction of the internal gear 13, and the phase of the orifice of the outer side wall of the internal gear 13 of the liquid permeating holes 15 is ahead of the phase of the orifice of the inner side wall of the internal gear 13 when the internal gear 13 rotates, so that the internal gear 13 can better suck oil liquid from the second through groove 5 when rotating, and meanwhile, the phenomenon that the oil liquid inside the internal gear 13 flows back to the second through groove 5 is effectively prevented.

The electromagnetic flow valve 9 is controlled by an external controller.

The drive shaft 20 and the drive shaft 21 are independently driven by external motors.

The liquid discharge amount of the first gear assembly is equal to the sum of the liquid discharge amounts of the two sets of second gear assemblies.

The working principle is as follows:

the first use mode is as follows:

firstly, a user inputs oil into the main shell 1 through an inlet, and simultaneously drives the driving gear 10 and the two driving gears 12 to rotate through an external motor, and the rotating speeds of the two driving gears 12 are the same;

and secondly, controlling the electromagnetic flow valve 9 on the main pipe 7 to be closed by a user through an external controller, and simultaneously commanding the electromagnetic flow valves 9 on the two branch pipes of the three-way pipe 8 to be opened.

The second use mode is as follows:

firstly, a user inputs oil into the main shell 1 through the liquid inlet, and simultaneously drives the driving gear 10 and the two driving gears 12 to rotate through the external motor, and the rotating speeds of the two driving gears 12 are different;

secondly, a user controls the electromagnetic flow valves 9 on the main pipe 7 to be opened through an external controller, and instructs the electromagnetic flow valves 9 on the two branch pipes of the three-way pipe 8 to be closed;

the third use mode is as follows:

firstly, a user inputs oil into the main shell 1 through an inlet, and simultaneously drives the driving gear 10 and one driving gear 12 to rotate through an external motor (at the moment, the other driving gear 12 does not rotate);

in the second step, the user controls the electromagnetic flow valve 9 on the main pipe 7 on the side of the driving gear 12 in the running state to be opened through an external controller, and simultaneously instructs the electromagnetic flow valves 9 on the two branch pipes of the three-way pipe 8 to be closed, and simultaneously instructs the electromagnetic flow valve 9 on the main pipe 7 on the side of the driving gear 12 in the closed state to be closed.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.