CN210343685U

CN210343685U - Novel double gear pump

Info

Publication number: CN210343685U
Application number: CN201921201151.8U
Authority: CN
Inventors: 陈中伟; 傅光祥
Original assignee: Zhejiang Zhongwei Hydraulic Technology Co Ltd
Current assignee: Zhejiang Zhongwei Hydraulic Technology Co Ltd
Priority date: 2019-07-27
Filing date: 2019-07-27
Publication date: 2020-04-17
Anticipated expiration: 2029-07-27

Abstract

The utility model discloses a novel duplicate gear pump, including the upper pump body, the right-hand member of the upper pump body is provided with the protecgulum, the upper portion inner chamber of the upper pump body is provided with the driving gear, the lower part inner chamber of the upper pump body is provided with driven gear down, the left end of the upper pump body is provided with the connecting block, the left side of going up the connecting block is provided with down the connecting block, the connecting block is provided with the adapter sleeve with the inside of the junction of last connecting block down, the middle part of connecting the spline housing is provided with second circlip for the hole, the left side of connecting block is provided with down the pump body down, the upper portion inner chamber of the lower pump body is provided with down the driving gear, the lower part inner chamber of the lower pump body is provided. The utility model discloses compact structure, it is small, the flow is big, and two upper and lower pump bodies can fuel feeding alone, use each other for different hydraulic system and do not influence, and work efficiency is high, pressure is high, long service life.

Description

Novel double gear pump

Technical Field

The utility model relates to a duplicate gear pump technical field specifically is a novel duplicate gear pump.

Background

The double gear pump is one kind of gear pump, and is one rotary pump for conveying liquid or pressurizing liquid via the change and shift of the working volume between the pump body and two meshed gears. The double gear pump has two sets of gears in the pump body, a set of gear is in the preceding pump body in the pump body, the sealed space of the pump body divide into suction chamber and discharge chamber before making, a back set of gear is in the back pump body in the pump body, the sealed space of the pump body of messenger back also divide into suction chamber and discharge chamber after making, when gear revolve, the space volume that the gear declutches the side is from little grow, form the vacuum and inhale liquid, liquid rotates and gets into the discharge chamber along with the gear between two intertooth space of gear, the liquid of getting rid of the chamber is extruded, accomplish the course of operation of gear pump with this.

The existing double gear pump has some defects, such as heavy weight, low working efficiency and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel duplicate gear pump to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel duplicate gear pump comprises an upper pump body, wherein a front cover is arranged at the right end of the upper pump body, a cylindrical pin is arranged between the front cover and the upper pump body, an upper driving gear is arranged in an upper inner cavity of the upper pump body, a lower driven gear is arranged in a lower inner cavity of the upper pump body, the left end of the upper pump body is provided with an upper connecting block, the left side of the upper connecting block is provided with a lower connecting block, a connecting sleeve is arranged inside the joint of the lower connecting block and the upper connecting block, a connecting spline sleeve is arranged inside the connecting sleeve, the middle part of the connecting spline sleeve is provided with an elastic retainer ring for a second hole, the left side of the lower connecting block is provided with a lower pump body, the upper inner cavity of the lower pump body is provided with a lower driving gear, the lower inner cavity of the lower pump body is provided with an upper driven gear, the left end of the lower pump body is provided with a rear cover, and a first O-shaped sealing ring is arranged at the joint of the rear cover and the lower pump body.

Preferably, go up driven gear, lower driving gear, go up the epaxial DU bearing that all is provided with of driving gear and driven gear down, the outside of DU bearing is provided with the seat circle, both ends all are provided with 3 word oil blanket about the seat circle.

Preferably, be provided with both sides between the right-hand member of the axle of driving gear down and the lower connecting block and seal oil skeleton seal circle and circlip for the first hole, circlip for the first hole is located both sides and seals the left side of oil skeleton seal circle, be connected through the connecting spline housing between the right-hand member of the axle of driving gear down and the left end of the axle of last driving gear, the right-hand member of the axle of going up the driving gear passes the protecgulum and stretches out outside the protecgulum, be provided with skeleton seal circle between the axle of going up the driving gear and the protecgulum.

Preferably, the material of the shell of the lower pump body and the upper pump body is all set up to high strength aluminum alloy material, the junction of the lower pump body and the lower connecting block is provided with 3 font retaining rings, the junction of the upper pump body and the upper connecting block is provided with 3 font retaining rings, the front side of the lower pump body is opened and is equipped with first oil inlet, the rear side of the lower pump body is opened and is equipped with first oil-out, the front side of the upper pump body is opened and is equipped with the second oil inlet, the rear side of the upper pump body is opened and is equipped with the second oil-out.

Preferably, a second O-shaped sealing ring is arranged between the lower connecting block and the upper connecting block, a sealing ring is arranged at the joint of the lower connecting block and the lower pump body, and a sealing ring is arranged at the joint of the upper connecting block and the upper pump body.

Preferably, the front cover, the upper pump body, the upper connecting block, the lower pump body and the rear cover are connected through socket head cap screws to form a valve body, and spring gaskets are arranged at the mounting positions of the socket head cap screws.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the material of the shell of the lower pump body and the shell of the upper pump body are both made of high-strength aluminum alloy material, so that the whole weight is reduced, and the heat dissipation effect is improved;

2. the utility model discloses compact structure, it is small, the flow is big, and two upper and lower pump bodies can fuel feeding alone, use each other for different hydraulic system and do not influence, and work efficiency is high, pressure is high, long service life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the front side surface of the present invention.

Fig. 3 is a schematic diagram of the rear side surface structure of the present invention.

In the figure: 1. inner hexagonal screw, 2, spring shim, 3, back lid, 4, first O type sealing washer, 5, last driven gear, 6, lower driving gear, 7, the lower pump body, 8, DU bearing, 9, the seat circle, 10, 3 word oil blanket, 11, 3 font retaining ring, 12, both sides seal oil skeleton sealing washer, 13, circlip for first hole, 14, lower connecting block, 15, the adapter sleeve, 16, second O type sealing washer, 17, the connecting spline housing, 18, circlip for the second hole, 19, go up the connecting block, 20, go up the driving gear, 21, lower driven gear, 22, go up the pump body, 23, the cylindric lock, 24, skeleton sealing washer, 25, the protecgulum, 26, first oil inlet, 27, the second oil inlet, 28, first oil-out, 29, the second oil-out.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an embodiment: a novel duplicate gear pump comprises an upper pump body 22, wherein a front cover 25 is arranged at the right end of the upper pump body 22, a cylindrical pin 23 is arranged between the front cover 25 and the upper pump body 22, an upper driving gear 20 is arranged in an upper inner cavity of the upper pump body 22, a lower driven gear 21 is arranged in a lower inner cavity of the upper pump body 22, an upper connecting block 19 is arranged at the left end of the upper pump body 22, a lower connecting block 14 is arranged at the left side of the upper connecting block 19, a second O-shaped sealing ring 16 is arranged between the lower connecting block 14 and the upper connecting block 19, a sealing ring is arranged at the joint of the lower connecting block 14 and a lower pump body 7, a sealing ring is arranged at the joint of the upper connecting block 19 and the upper pump body 22, the connection tightness is improved, a connecting sleeve 15 is arranged inside the joint of the lower connecting block 14 and the upper connecting block 19, a connecting spline sleeve, the left side of the lower connecting block 14 is provided with a lower pump body 7, the shell of the lower pump body 7 and the shell of the upper pump body 22 are both made of high-strength aluminum alloy materials, so that the whole weight is reduced, and the heat dissipation effect is improved, the joint of the lower pump body 7 and the lower connecting block 14 is provided with a 3-shaped check ring 11, the joint of the upper pump body 22 and the upper connecting block 19 is provided with the 3-shaped check ring 11, so that the sealing performance is improved, the front side of the lower pump body 7 is provided with a first oil inlet 26, the rear side of the lower pump body 7 is provided with a first oil outlet 28, the front side of the upper pump body 22 is provided with a second oil inlet 27, the rear side of the upper pump body 22 is provided with a second oil outlet 29, the upper pump body and the lower pump body can independently supply oil, the use of different hydraulic systems is not influenced by each other, the upper inner cavity of the lower pump body 7 is provided with a lower driving, the first hole circlip 13 is positioned at the left side of the oil sealing skeleton sealing ring 12 at both sides, the right end of the shaft of the lower driving gear 6 is connected with the left end of the shaft of the upper driving gear 20 through the connecting spline sleeve 17, the coaxiality of two gear shafts is improved, the bearing capacity of the gear shafts is increased, the right end of the shaft of the upper driving gear 20 passes through the front cover 25 and extends out of the front cover 25, the skeleton sealing ring 24 is arranged between the shaft of the upper driving gear 20 and the front cover 25, the connection tightness is improved, the lower inner cavity of the lower pump body 7 is provided with the upper driven gear 5, the shafts of the upper driven gear 5, the lower driving gear 6, the upper driving gear 20 and the lower driven gear 21 are all provided with DU bearings 8, the outside of the DU bearings 8 is provided with a seat ring 9, the left and right ends of the seat ring 9 are both provided with 3-shaped oil seals 10, the lubrication degree, the junction of the rear cover 3 and the lower pump body 7 is provided with a first O-shaped sealing ring 4, the front cover 25, the upper pump body 22, the upper connecting block 19, the lower connecting block 14, the lower pump body 7 and the rear cover 3 are connected through an inner hexagon screw 1 to form a valve body, and the installation position of the inner hexagon screw 1 is provided with a spring gasket 2, so that the assembly is facilitated.

The working principle is as follows: the utility model discloses when using, need right the utility model discloses carry out simple structure and know, this duplicate gear pump compact structure, small, the flow is big, first oil inlet 26 has been seted up to the front side of the lower pump body 7, first oil-out 28 has been seted up to the rear side of the lower pump body 7, second oil inlet 27 has been seted up to the front side of the upper pump body 22, second oil-out 29 has been seted up to the rear side of the upper pump body 22, two upper and lower pump bodies can fuel feeding alone, use each other for different hydraulic system and do not influence, the material of the shell of the lower pump body 7 and the upper pump body 22 all sets up to high strength aluminum alloy material, thereby make whole weight loss of weight improve its radiating effect again, the inner structure has used multiple advanced technologies such as axial clearance floating compensation, radial balance, DU bearing self-lubricating, this duplicate gear pump has characteristics such as efficient, the pressure is high, the noise is low and longe-lived, Engineering machinery such as hydraulic stations, loaders, excavators and road rollers, and industries such as environmental sanitation and agriculture.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A novel duplicate gear pump comprises an upper pump body (22), and is characterized in that: a front cover (25) is arranged at the right end of the upper pump body (22), a cylindrical pin (23) is arranged between the front cover (25) and the upper pump body (22), an upper driving gear (20) is arranged in an upper inner cavity of the upper pump body (22), a lower driven gear (21) is arranged in a lower inner cavity of the upper pump body (22), an upper connecting block (19) is arranged at the left end of the upper pump body (22), a lower connecting block (14) is arranged at the left side of the upper connecting block (19), a connecting sleeve (15) is arranged inside the joint of the lower connecting block (14) and the upper connecting block (19), a connecting spline sleeve (17) is arranged inside the connecting sleeve (15), a second hole elastic check ring (18) is arranged in the middle of the connecting spline sleeve (17), a lower pump body (7) is arranged at the left side of the lower connecting block (14), and a lower driving gear (6) is arranged in an upper, the lower part inner chamber of the lower pump body (7) is provided with an upper driven gear (5), the left end of the lower pump body (7) is provided with a rear cover (3), and a first O-shaped sealing ring (4) is arranged at the joint of the rear cover (3) and the lower pump body (7).

2. The novel dual gear pump of claim 1, wherein: go up driven gear (5), lower driving gear (6), go up driving gear (20) and driven gear (21) epaxial all be provided with DU bearing (8) down, the outside of DU bearing (8) is provided with seat circle (9), both ends all are provided with 3 word oil blanket (10) about seat circle (9).

3. The novel dual gear pump of claim 1, wherein: be provided with both sides between the right-hand member of the axle of lower driving gear (6) and lower connecting block (14) and seal oil skeleton sealing washer (12) and first hole with circlip (13), circlip (13) are located the left side of both sides oil skeleton sealing washer (12) for first hole, be connected through connecting spline housing (17) between the right-hand member of the axle of lower driving gear (6) and the left end of the axle of last driving gear (20), it passes protecgulum (25) and stretches out outside protecgulum (25) to go up the right-hand member of the axle of driving gear (20), it is provided with skeleton sealing washer (24) to go up between axle and the protecgulum (25) of driving gear (20).

4. The novel dual gear pump of claim 1, wherein: the material of the shell of the lower pump body (7) and the upper pump body (22) all sets up to high strength aluminium alloy material, the junction of the lower pump body (7) and lower connecting block (14) is provided with 3 font retaining ring (11), the junction of the upper pump body (22) and upper connecting block (19) is provided with 3 font retaining ring (11), first oil inlet (26) have been seted up to the front side of the lower pump body (7), first oil-out (28) have been seted up to the rear side of the lower pump body (7), the front side of the upper pump body (22) has been seted up and has been equipped with second oil inlet (27), the rear side of the upper pump body (22) has been seted up and has been equipped with second oil-out (29).

5. The novel dual gear pump of claim 1, wherein: be provided with second O type sealing washer (16) between lower connecting block (14) and last connecting block (19), the junction of lower connecting block (14) and lower pump body (7) is provided with the sealing washer, it is provided with the sealing washer with last pump body (22) junction to go up connecting block (19).

6. The novel dual gear pump of claim 1, wherein: the pump body is characterized in that the front cover (25), the upper pump body (22), the upper connecting block (19), the lower connecting block (14), the lower pump body (7) and the rear cover (3) are connected through the inner hexagon screw (1) to form a valve body, and the spring gasket (2) is arranged at the mounting position of the inner hexagon screw (1).