CN208634032U - A kind of duplex gear pump of longitudinal connection - Google Patents
A kind of duplex gear pump of longitudinal connection Download PDFInfo
- Publication number
- CN208634032U CN208634032U CN201821020997.7U CN201821020997U CN208634032U CN 208634032 U CN208634032 U CN 208634032U CN 201821020997 U CN201821020997 U CN 201821020997U CN 208634032 U CN208634032 U CN 208634032U
- Authority
- CN
- China
- Prior art keywords
- pump
- hole
- front cover
- gusset piece
- pump housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a kind of duplex gear pumps of longitudinal connection comprising front cover, the preceding pump housing, gusset piece, pump front cover, the rear pump housing and rear cover, the front cover and the preceding pump housing are fixedly connected sequentially afterwards, pump front cover, the rear pump housing and rear cover after described and are fixedly connected sequentially；The preceding pump housing is fixedly connected by gusset piece with rear pump front cover；Wherein, the gusset piece is equipped with the first installation through-hole connecting with the preceding pump housing, and the gusset piece two sides are symmetrically arranged with reinforcement through-hole, and the gusset piece top and low side are equipped with the first longitudinal mounting hole.The duplex gear pump of the longitudinal connection improves the sealing performance of front pump while avoiding front cover seam allowance from being destroyed, and the connection of forward and backward pump is facilitated to install；The interference between the mounting screw and rear pump housing oil inlet port connection body on front cover is pumped after avoiding, and improves the reliability of connection；And outer dimension is small, it is light-weight.
Description
Technical field
The utility model relates to a kind of duplex gear pumps, are specifically related to a kind of duplex gear pump of longitudinal connection.
Background technique
With the continuous development of society, all trades and professions are all advanced by leaps and bounds.Gear pump has as a kind of power source device
Simple and compact for structure, small in size, light weight；It is good manufacturability, cheap；Self-suction is strong, insensitive to oil contamination；Revolving speed model
Enclose it is big, can impact resistance load, the advantages that easy to maintain, reliable operation.Wherein, duplex gear pump by the series connection of pumps of two-stage gear and
At；It has the characteristics that high speed, high pressure, big flow；It is usually connected in series by two-stage gear pump, is widely used.
In the prior art, the forward and backward biggish duplex gear pump of pumpage difference is followed by small pump generally by big pump, real
The series connection of existing axial direction, wherein front and back pump internal structure does not allow to go here and there oily.And the screw of existing duplex gear pump is pacified from front cover
Dress stop portion starts, and terminates at the gusset piece between front pump and rear pump, realizes the connection of front cover, the preceding pump housing and gusset piece.Such as Fig. 1
Shown, the rear pump front cover of duplex gear pump is connect by mounting screw with gusset piece；It is rear to pump for the reliability for improving integral sealing
Front cover is transversely mounted screw fastening frequently with the left and right sides.Right existing duplex gear pump after mounting, is pumped and is connect into, the hydraulic fluid port that pumps out
The phenomenon that when head, Yi Fasheng fitting body and mounting screw interference phenomenon, sealing effect is bad, is easy to happen leakage at work.
As described above, people need a structure simple to avoid deficiency existing for existing duplex gear pump, pump into, pump
Fuel discharge port easily connects, fitting body and mounting screw is non-interference, sealing effect is good, the duplex-gear for avoiding leak case from occurring
Wheel pump.
Utility model content
To overcome the shortcomings of existing technologies, the purpose of this utility model is that: a kind of duplicate gear of longitudinal connection is provided
It pumps, pumpage is big before the duplex gear pump, and rear pumpage is small, and with certain shock loading, rear pump work when preceding pump work
When without shock loading operating condition；Its structure is simple, pump into, pump out port connection and easily connect, fitting body and mounting screw it is non-interference,
Sealing effect is good, avoids leak case.
The utility model solves technical problem and adopts the following technical scheme that
A kind of duplex gear pump of longitudinal connection comprising front cover, the preceding pump housing, gusset piece, afterwards pump front cover, the rear pump housing and after
Lid, the front cover and the preceding pump housing are fixedly connected sequentially, and pump front cover, the rear pump housing and rear cover after described and are fixedly connected sequentially；Before described
The pump housing is fixedly connected by gusset piece with rear pump front cover；Wherein, the gusset piece is equipped with the first installation connecting with the preceding pump housing
Through-hole, the gusset piece two sides are symmetrically arranged with reinforcement through-hole, and the gusset piece top and low side are equipped with the first longitudinal mounting hole.
There is also following technical characteristics for the utility model:
The first longitudinal mounting hole is tapped blind hole, and the first longitudinal mounting hole is set to gusset piece and rear pump front cover
Fit connecting pin.
The top of pump front cover and low side are equipped with the second longitudinal mounting hole after described, and the second longitudinal mounting hole is logical
Hole, and the gusset piece is connect with rear pump front cover by mounting screw, the mounting screw run through the second longitudinal mounting hole and the
One longitudinal mounting hole is fixedly connected.
The fit two sides of connecting pin end face of the gusset piece and rear pump front cover are all provided with fluted, and the reinforcement through-hole is set
In bottom portion of groove.
The preceding pump housing two sides are equipped with internal thread hole, and the internal thread hole and reinforcement through-hole are coaxial arrangement, wherein
The preceding pump housing is connected with gusset piece by reinforcing screw, and the reinforcement screw connects through reinforcement through-hole and internal thread hole screw thread
It connects.
The internal thread hole is symmetrically set in the outside of the gear pump exterior seal ring.
The preceding pump housing is equipped with the second installation through-hole compatible with the first installation through-hole, and the front cover, the preceding pump housing
It is connected by screw to gusset piece, the screw is fixedly connected through the first installation through-hole and the second installation through-hole with front cover.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the duplex gear pump of the longitudinal connection of the utility model, the front cover of the duplex gear pump, the preceding pump housing and gusset piece are logical
It crosses screw to install (pass sequentially through gusset piece, the preceding pump housing and front cover) from back to front, breach traditional because installation space is limited
And use the fastening means pre-tightened from front to back；Front cover installation seam allowance is avoided when connecting with power takeoff, it is oily because seam allowance is destroyed
There is a phenomenon where leak generation outward by the screw hole of stop portion for liquid；Improve the sealing installed outside the duplex gear pump front cover
Performance.
2, traditional duplex gear pump in normal work, because there is the percussion of shock loading, easily leads to duplex gear pump
Screw it is small loosen, pretightning force reduces, and leads to the failure of external seal, and leakage phenomenon occurs.The longitudinal connection of the utility model
Duplex gear pump, gusset piece, which is equipped with, reinforces through-hole, and the preceding pump housing is equipped with and reinforces the coaxial internal thread hole of through-hole；Reinforce
The two sides of pump housing exterior seal ring are arranged in screw position, the internal thread hole reinforced on through-hole and the preceding pump housing on gusset piece
It is connected, realizes that secondary reinforcement pre-tightens；The outer seal configuration for further protecting the duplex gear pump improves the duplex gear pump
Front cover, the preceding pump housing and gusset piece sealing performance, improve the overall performance of product.
3, since the oil inlet and outlet of the rear pump housing is left and right sides distribution, when installation fastens port connection body, fitting body is prolonged
The horizontal mounting screw in left and right for stretching direction and traditional structure easily interferes phenomenon.The duplex-gear of the longitudinal connection of the utility model
Wheel pump is connected between gusset piece and rear pump front cover using longitudinal installation, and mounting screw up and down direction is longitudinal；The longitudinal installation
Design, not only avoids installation interference phenomenon, also reduces the outer dimension of gusset piece entirety, and then make the duplex gear pump
Outer dimension is small, light-weight.
The duplex gear pump of the longitudinal connection improves the sealing performance of front pump while avoiding front cover seam allowance from being destroyed,
The connection of forward and backward pump is facilitated to install；It is pumped after avoiding dry between the mounting screw and rear pump housing oil inlet port connection body on front cover
It relates to, improves the reliability of connection；And outer dimension is small, it is light-weight.
Detailed description of the invention
Fig. 1 is the duplex gear pump structural schematic diagram of the prior art.
Fig. 2 is the utility model duplex gear pump structural schematic diagram.
Fig. 3 is pump housing structural schematic diagram before the utility model.
Fig. 4 is the utility model gusset piece structural schematic diagram.
Fig. 5 is pump front-cover structure schematic diagram after the utility model.
Wherein: 1- front cover, the pump housing before 2-, 21- internal thread hole, the second installation through-hole of 22-, 3- gusset piece, 31- first are installed
Through-hole, 32- reinforce through-hole, the longitudinal mounting hole of 33- first, 34- groove, pump front cover after 4-, the longitudinal mounting hole of 41- second, after 5-
The pump housing, 6- rear cover, 7- mounting screw.
Specific embodiment
Referring to shown in Fig. 2 to 5, to a structure feature for the duplex gear pump of longitudinal connection, details are as follows:
A kind of duplex gear pump of longitudinal connection comprising front cover 1, the preceding pump housing 2, gusset piece 3, rear pump front cover 4, the rear pump housing
5 and rear cover 6, the front cover 1 and the preceding pump housing 2 be fixedly connected sequentially, it is described after pump front cover 4, the rear pump housing 5 and rear cover 6 successively fix
Connection；The preceding pump housing 2 is fixedly connected by gusset piece 3 with rear pump front cover 4；Wherein, the gusset piece 3 is equipped with and the preceding pump housing
First installation through-hole 31 of 2 connections, 3 two sides of gusset piece, which are symmetrically arranged with, reinforces through-hole 32,3 top of gusset piece and low side
It is equipped with the first longitudinal mounting hole 33.
Specifically, in normal work due to traditional duplex gear pump, because there is the percussion of shock loading, easily leading to double
The screw of connection gear pump is small to be loosened, and pretightning force reduces, and leads to the failure of external seal, and leakage phenomenon occurs.This duplicate gear
Gusset piece 3 described in pump is further connect by the symmetrically arranged reinforcement through-hole 32 in two sides thereon with the preceding pump housing 2, the pump housing before realizing
2 with the reinforcement sealing function of gusset piece 3；The preceding pump housing 2 of the duplex gear pump and the sealing performance of gusset piece 3 are improved, is improved
The overall performance of product.
The duplex gear pump of the longitudinal connection, the gusset piece 3 pass through the first longitudinal mounting hole set by its top and low side
33 connect with rear pump front cover 4, and 7 up and down direction of mounting screw is longitudinal, so as to avoid installation interference phenomenon, also reduces gusset piece
3 whole outer dimensions, and then keep the outer dimension of the duplex gear pump small, it is light-weight.
Wherein, without shock loading operating condition when rear pump work, using screw since at rear cover, pass through the rear pump housing 5 and rear pump
Front cover 4 connects；The whole applying working condition of pump is good because after, and so there is no need to the reinforced hole for reinforcing sealing function is arranged.
The gusset piece 3 uses cast iron materials, and it reinforces the intensity of forward and backward pump housing connection, improves the entirety of product
Reliability.
As a preferred embodiment of the present invention, in conjunction with shown in Fig. 2 to 5；
Specifically, the first longitudinal mounting hole 33 is tapped blind hole, and the first longitudinal mounting hole 33 is set to connection
Plate 3 and rear pump front cover 4 fit connecting pin；Then front cover 4 and gusset piece 3 are pumped after can realizing can pass through the first longitudinal mounting hole 33
Connection.
Wherein, the top of the rear pump front cover 4 and low side are equipped with the second longitudinal mounting hole 41, the second longitudinal installation
Hole 41 is through-hole, and the gusset piece 3 is connect with rear pump front cover 4 by mounting screw 7, and the mounting screw 7 is vertical through second
Mounting hole 41 is set to be fixedly connected with the first longitudinal mounting hole 33；It is longitudinal that 7 up and down direction of mounting screw can be further realized, realized
Connection between gusset piece 3 and rear pump front cover 4, the mounting screw 7 pumped on front cover 4 after avoiding connect with rear 5 oil inlet hydraulic fluid port of the pump housing
Installation interference phenomenon between head body also reduces the whole outer dimension of gusset piece 3, and then makes the shape of the duplex gear pump
Size is small, light-weight.
To avoid the interference reinforced between screw and 5 oil inlet port connection body of the rear pump housing on gusset piece 3, connection is improved
Reliability；The fit two sides of connecting pin end face of the gusset piece 3 and rear pump front cover 4 are all provided with fluted 34, and it is described reinforce it is logical
Hole 32 is set to 34 bottom of groove；The sealing performance of front pump can be improved simultaneously.
Specifically, 2 two sides of the preceding pump housing are equipped with internal thread hole 21, and the internal thread hole 21 is with through-hole 32 is reinforced
Coaxial arrangement, wherein the preceding pump housing 2 is connected with gusset piece 3 by reinforcing screw, and the reinforcement screw is through reinforcement through-hole 32
It is threadedly coupled with internal thread hole 21；The reinforcement sealing function of the pump housing 2 and gusset piece 3 before can further realizing；Improve this pair
Join the preceding pump housing 2 of gear pump and the sealing performance of gusset piece 3, improves the overall performance of product；Avoid front pump due to shock loading
Percussion, and lead to that the screw of duplex gear pump is small to be loosened, pretightning force reduces, and leads to external seal failure, lets out
Leak phenomenon.
Further, the internal thread hole 21 is symmetrically set in the outside of the gear pump exterior seal ring；To guarantee the duplex
Being symmetrical arranged for the preload positioning of gear pump, guarantees that pretightning force is balanced, sealing performance can be realized, and avoids seal failure, leakage
Phenomenon occurs.
Wherein, the preceding pump housing 2 be equipped with second installation through-hole 22 compatible with the first installation through-hole 31, and it is described before
Lid 1, the preceding pump housing 2 and gusset piece 3 are connected by screw to, the screw through the first installation through-hole 31 and the second installation through-hole 22 with
Front cover 1 is fixedly connected；The sealing performance of front pump can be improved, forward and backward pump is facilitated while avoiding 1 seam allowance of front cover from being destroyed
Connection installation；Improve the overall performance and reliability of the duplex gear pump product.
The utility model provides a kind of duplex gear pump of longitudinal connection, which obviate it is rear pump front cover on mounting screw with
Interference between pump housing oil inlet port connection body afterwards, improves the reliability of connection；And outer dimension is small, it is light-weight；Before avoiding
While lid seam allowance is destroyed, the sealing performance of front pump is improved, the connection of forward and backward pump is facilitated to install.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of duplex gear pump of longitudinal connection comprising front cover, the preceding pump housing, gusset piece, afterwards pump front cover, the rear pump housing and after
Lid, the front cover and the preceding pump housing are fixedly connected sequentially, and pump front cover, the rear pump housing and rear cover after described and are fixedly connected sequentially；Its feature
Be: the preceding pump housing is fixedly connected by gusset piece with rear pump front cover；Wherein, the gusset piece is equipped with and connect with the preceding pump housing
The first installation through-hole, the gusset piece two sides are symmetrically arranged with reinforcement through-hole, and the gusset piece top and low side are equipped with first
Longitudinal mounting hole.
2. a kind of duplex gear pump of longitudinal connection according to claim 1, it is characterised in that: the first longitudinal installation
Hole is tapped blind hole, and the first longitudinal mounting hole is set to gusset piece and rear pump front cover fits connecting pin.
3. a kind of duplex gear pump of longitudinal connection according to claim 2, it is characterised in that: the top of pump front cover after described
It holds and low side is equipped with the second longitudinal mounting hole, the second longitudinal mounting hole is through-hole, and the gusset piece pumps front cover with rear
It is connected by mounting screw, the mounting screw is fixedly connected through the second longitudinal mounting hole with the first longitudinal mounting hole.
4. a kind of duplex gear pump of longitudinal connection according to claim 1, it is characterised in that: the gusset piece and rear pump
Front cover fit connecting pin end face two sides be all provided with it is fluted, and the reinforcement through-hole be set to bottom portion of groove.
5. a kind of duplex gear pump of longitudinal connection according to claim 4, it is characterised in that: the preceding pump housing two sides are equal
Equipped with internal thread hole, and the internal thread hole is coaxial arrangement with through-hole is reinforced, wherein the preceding pump housing and gusset piece are by adding
Strong screw connection, the reinforcement screw are threadedly coupled through through-hole is reinforced with internal thread hole.
6. a kind of duplex gear pump of longitudinal connection according to claim 5, it is characterised in that: the internal thread hole is symmetrical
Set on the outside of the gear pump exterior seal ring.
7. a kind of duplex gear pump of longitudinal connection according to claim 1, it is characterised in that: the preceding pump housing is equipped with
The second installation through-hole compatible with the first installation through-hole, and the front cover, the preceding pump housing and gusset piece are connected by screw to, it is described
Screw is fixedly connected through the first installation through-hole and the second installation through-hole with front cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821020997.7U CN208634032U (en) | 2018-06-29 | 2018-06-29 | A kind of duplex gear pump of longitudinal connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821020997.7U CN208634032U (en) | 2018-06-29 | 2018-06-29 | A kind of duplex gear pump of longitudinal connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634032U true CN208634032U (en) | 2019-03-22 |
Family
ID=65737300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821020997.7U Active CN208634032U (en) | 2018-06-29 | 2018-06-29 | A kind of duplex gear pump of longitudinal connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634032U (en) |
-
2018
- 2018-06-29 CN CN201821020997.7U patent/CN208634032U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10876439B2 (en) | Internal combustion engine, lubrication system, and engine oil strainer | |
| CN208634032U (en) | A kind of duplex gear pump of longitudinal connection | |
| CN202048244U (en) | Electromagnetic energy-saving check valve | |
| CN106968755A (en) | It is a kind of to weaken the machine oil refrigerating module housing of vortex phenomenon | |
| CN210343889U (en) | Supercharging device for hydraulic cylinder | |
| CN203130493U (en) | High-pressure bilateral rotation gear pump | |
| CN110345042A (en) | A kind of hydraulic piston type coexistence of gas and liquid body supercharger | |
| CN102155402A (en) | Double-oil-outlet speed variable gear pump | |
| CN207195169U (en) | Automobile power synthesizes case double-united oil pump | |
| CN206681811U (en) | A kind of machine oil refrigerating module housing that can weaken vortex phenomenon | |
| CN202597095U (en) | Triple high-pressure gear pump | |
| CN208294758U (en) | The electricity fork duplex gear pump pump housing | |
| CN207920841U (en) | A kind of fluid end of reversed suction self-balance type booster pump | |
| CN209604355U (en) | A kind of energy-saving clean Compound Gear Motor | |
| CN203098273U (en) | Direct-connection pump-valve integrated high-pressure hydraulic pump | |
| CN202017626U (en) | High-flow speed-variable gear pump with double oil outlets | |
| CN207470427U (en) | A kind of efficient fork truck gear pump | |
| CN207687091U (en) | The hydraulic cylinder of dribbling radial type cylinder cap | |
| CN103629110A (en) | Dual-gear oil pump compensating axial clearance by side plates | |
| CN207111332U (en) | A kind of ship hand steering gear novel plunger-type self-lock manual pump | |
| CN112253435A (en) | High-performance high-pressure reciprocating pump | |
| CN208040680U (en) | A kind of electric-controlled hydraulic plunger pump | |
| CN205744422U (en) | A kind of floating type fuel oil pump of gear shaft | |
| CN206753835U (en) | A kind of manual pump high/low pressure conversion device | |
| CN220081648U (en) | High-pressure low-flow hydraulic diaphragm pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |