CN108194349A - A kind of gear pump for reducing power attenuation - Google Patents
A kind of gear pump for reducing power attenuation Download PDFInfo
- Publication number
- CN108194349A CN108194349A CN201711464634.2A CN201711464634A CN108194349A CN 108194349 A CN108194349 A CN 108194349A CN 201711464634 A CN201711464634 A CN 201711464634A CN 108194349 A CN108194349 A CN 108194349A
- Authority
- CN
- China
- Prior art keywords
- pump
- pump cover
- gear
- power attenuation
- gear shaft
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention provides a kind of gear pumps for reducing power attenuation, are set as the duplex pump being made of huge discharge low-pressure gear pump, small displacement high-pressure gear pump, including front pump cover, spill valve and check valve assembly are respectively equipped in front pump cover both sides.Huge discharge provides low pressure oil when the gear pump of this reduction power attenuation has low-load, and small displacement provides the advantages of high pressure is oily during high load.
Description
Technical field
The invention belongs to wood splitting machine, press, technical field of engineering machinery, are related to a kind of gear pump for reducing power attenuation.
Background technology
In hydraulic system, mechanism needs pushing mechanism to move, usually using super large discharge list pump, high power consumption, fixed speed
Spend constant work.Consider that power attenuation is larger, the present invention devises one kind huge discharge in low-load and provides low pressure oil, high
Small displacement provides high pressure oil during load, reduces the gear pump of power attenuation.
Invention content
The purpose of the present invention is being directed to existing technology, there are the above problems, it is proposed that huge discharge provides during a kind of low-load
Low pressure oil, small displacement provides the gear pump of the reduction power attenuation of high pressure oil during high load.
The purpose of the present invention can be realized by following technical proposal：A kind of gear pump for reducing power attenuation, is set as
The duplex pump being made of huge discharge low-pressure gear pump, small displacement high-pressure gear pump, including front pump cover, in front pump cover both sides point
It She You not spill valve and check valve assembly.
As a further improvement on the present invention, the gear pump of the reduction power attenuation further include rear pump cover, be connected to after pump
Intermediate, driving gear shaft, driven gear shaft between lid and front pump cover, the driving gear shaft pass through front pump cover, intermediate
And be inserted into rear pump cover, the driven gear shaft passes through intermediate, and front pump cover, rear pump are inserted into the both ends of driven gear shaft respectively
Gai Zhong is equipped with the driving gear being set in outside driving gear shaft, the driven tooth being set in outside driven gear shaft in intermediate
Wheel, the driving gear and driven gear engagement connection.
As a further improvement on the present invention, E types sealing element and two floatings are provided between intermediate and front pump cover
Side plate, two floating side plates are respectively placed between driving gear, driven gear and front pump cover, and the E types sealing element is located at actively
Between gear shaft, driven gear shaft.
As a further improvement on the present invention, the sealing structure that the driving gear shaft is made up of outside framework oil seal and clamp spring
It is tightly connected with front pump cover.
Based on above-mentioned technical proposal, the embodiment of the present invention can at least generate following technique effect：This reduction power attenuation
Gear pump be a kind of duplex pump, this duplex pump is by a huge discharge low-pressure gear pump and a small displacement high-pressure gear pump group
Into at the both ends of front pump cover, being respectively designed with spill valve and check valve assembly；When duplex pump operating pressure is less than overflow valve
During Opening pressure, spill valve is closed, and check valve assembly is opened, and output hydraulic pressure is oily simultaneously for two gear pumps；Work as operating pressure
During higher than overflow valve opening pressure, spill valve is opened；Check valve assembly is closed, and only the gear pump of small displacement exports high liquid
Pressure oil, while spill valve can arbitrarily be set according to the load of system, so as to reduce internal system power attenuation, this hair
Bright huge discharge when can realize low-load provides low pressure oil, and small displacement provides high pressure oil during high load, reduces power attenuation.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the fundamental diagram of a preferred embodiment of the present invention.
Fig. 2 is the structure diagram of a preferred embodiment of the present invention.
Fig. 3 is the sectional view of a preferred embodiment of the present invention.
In figure, 10, huge discharge low-pressure gear pump；20th, small displacement high-pressure gear pump；30th, front pump cover；40th, overflow valve group
Part；50th, check valve assembly；60th, rear pump cover；70th, intermediate；80th, driving gear shaft；90th, driven gear shaft；100th, driving tooth
Wheel；110th, driven gear；120th, E types sealing element；130th, floating side plate；140th, outside framework oil seal；150th, clamp spring.
Specific embodiment
The following is specific embodiments of the present invention and with reference to attached drawing, technical scheme of the present invention is further described,
But the present invention is not limited to these embodiments.
Technical solution provided by the invention is illustrated in more detail with reference to Fig. 1 to Fig. 3.
As shown in Figure 1 to Figure 3, the gear pump of this reduction power attenuation is set as by huge discharge low-pressure gear pump 10, small
The duplex pump that discharge capacity high-pressure gear pump 20 forms, including front pump cover 30, spill valve is respectively equipped in 30 both sides of front pump cover
40 and check valve assembly 50.
A kind of gear pump for reducing power attenuation of present invention protection, is a kind of duplex pump, this duplex pump is by a huge discharge
Low-pressure gear pump 10 and a small displacement high-pressure gear pump 20 form, and at the both ends of front pump cover 30, are respectively designed with overflow valve
Component 40 and check valve assembly 50；When duplex pump operating pressure is less than overflow valve opening pressure, spill valve 40 is closed, single
It is opened to valve module 50, output hydraulic pressure is oily simultaneously for two gear pumps；When operating pressure is higher than overflow valve opening pressure, overflow valve
Component 40 is opened；Check valve assembly 50 is closed, and only the gear pump of small displacement exports high hydraulic oil, while spill valve 40 can
It is arbitrarily set according to the load of system, so as to reduce internal system power attenuation, the present invention can realize big during low-load
Discharge capacity provides low pressure oil, and small displacement provides high pressure oil during high load, reduces power attenuation.
In the present invention, so that integral structure layout is compact, all parts are fitted close, the tooth of the reduction power attenuation
Wheel pump further includes rear pump cover 60, the intermediate being connected between rear pump cover 60 and front pump cover 30 70, driving gear shaft 80, driven tooth
Wheel shaft 90, the driving gear shaft 80 pass through front pump cover 30, intermediate 70 and are inserted into rear pump cover 60, the driven gear shaft 90
Across intermediate 70, and the both ends of driven gear shaft 90 are inserted into respectively in front pump cover 30, rear pump cover 60, are installed in intermediate 70
There are the driving gear being set in outside driving gear shaft 80 100, the driven gear being set in outside driven gear shaft 90 110, the master
Moving gear 100 and the engagement connection of driven gear 110.
E types sealing element 120 and two floating side plates 130, two floatings are provided between intermediate 70 and front pump cover 30
Side plate 130 is respectively placed between driving gear 100, driven gear 110 and front pump cover 30, and the E types sealing element 120 is located at actively
Between gear shaft 80, driven gear shaft 90.
Driving gear shaft 80 is tightly connected by the sealing structure that outside framework oil seal 140 and clamp spring 150 form with front pump cover 30.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (4)
1. a kind of gear pump for reducing power attenuation, it is characterised in that：It is set as high by huge discharge low-pressure gear pump, small displacement
The duplex pump of knob wheel pump composition, including front pump cover, spill valve and check valve assembly are respectively equipped in front pump cover both sides.
2. a kind of gear pump for reducing power attenuation according to claim 1, it is characterised in that：The reduction power attenuation
Gear pump further includes rear pump cover, the intermediate being connected between rear pump cover and front pump cover, driving gear shaft, driven gear shaft, institute
Driving gear shaft is stated across front pump cover, intermediate and is inserted into rear pump cover, the driven gear shaft passes through intermediate, and driven tooth
The both ends of wheel shaft are inserted into respectively in front pump cover, rear pump cover, and the driving tooth being set in outside driving gear shaft is equipped in intermediate
The driven gear taken turns, be set in outside driven gear shaft, the driving gear and driven gear engagement connection.
3. a kind of gear pump for reducing power attenuation according to claim 2, it is characterised in that：In intermediate and front pump cover
Between be provided with E types sealing element and two floating side plates, two floating side plates are respectively placed in driving gear, driven gear and front pump
Between lid, the E types sealing element is between driving gear shaft, driven gear shaft.
4. a kind of gear pump of reduction power attenuation according to Claims 2 or 3, it is characterised in that：The driving gear
Axis is tightly connected by the sealing structure that outside framework oil seal and clamp spring form and front pump cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464634.2A CN108194349A (en) | 2017-12-28 | 2017-12-28 | A kind of gear pump for reducing power attenuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464634.2A CN108194349A (en) | 2017-12-28 | 2017-12-28 | A kind of gear pump for reducing power attenuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194349A true CN108194349A (en) | 2018-06-22 |
Family
ID=62585389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464634.2A Pending CN108194349A (en) | 2017-12-28 | 2017-12-28 | A kind of gear pump for reducing power attenuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108194349A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017275A (en) * | 2019-04-12 | 2019-07-16 | 桐庐海普机电设备有限公司 | A kind of gear pump and its working method |
| WO2021030710A1 (en) * | 2019-08-14 | 2021-02-18 | Viking Pump, Inc. | High pressure pumping system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549210Y (en) * | 2002-05-20 | 2003-05-07 | 杭州萧山云祥工程机械厂 | Double-axial seal compensating high pressure gear pump |
| CN201180647Y (en) * | 2008-04-15 | 2009-01-14 | 阜新东方液压有限公司 | Two-body type heavy pressure gear oil pump |
| CN202091187U (en) * | 2011-05-24 | 2011-12-28 | 博顿液压股份有限公司 | High-and-low-pressure dual-gear pump |
| CN103629110A (en) * | 2012-08-24 | 2014-03-12 | 无锡市东方液压件制造有限公司 | Dual-gear oil pump compensating axial clearance by side plates |
| CN204674077U (en) * | 2015-06-02 | 2015-09-30 | 南京埃斯顿自动化股份有限公司 | A kind of hydraulic press servo duplex pump hydraulic control system |
-
2017
- 2017-12-28 CN CN201711464634.2A patent/CN108194349A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549210Y (en) * | 2002-05-20 | 2003-05-07 | 杭州萧山云祥工程机械厂 | Double-axial seal compensating high pressure gear pump |
| CN201180647Y (en) * | 2008-04-15 | 2009-01-14 | 阜新东方液压有限公司 | Two-body type heavy pressure gear oil pump |
| CN202091187U (en) * | 2011-05-24 | 2011-12-28 | 博顿液压股份有限公司 | High-and-low-pressure dual-gear pump |
| CN103629110A (en) * | 2012-08-24 | 2014-03-12 | 无锡市东方液压件制造有限公司 | Dual-gear oil pump compensating axial clearance by side plates |
| CN204674077U (en) * | 2015-06-02 | 2015-09-30 | 南京埃斯顿自动化股份有限公司 | A kind of hydraulic press servo duplex pump hydraulic control system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017275A (en) * | 2019-04-12 | 2019-07-16 | 桐庐海普机电设备有限公司 | A kind of gear pump and its working method |
| CN110017275B (en) * | 2019-04-12 | 2024-05-24 | 桐庐海普机电设备有限公司 | Gear pump and working method thereof |
| WO2021030710A1 (en) * | 2019-08-14 | 2021-02-18 | Viking Pump, Inc. | High pressure pumping system |
| US11493035B2 (en) | 2019-08-14 | 2022-11-08 | Viking Pump, Inc. | High pressure pumping system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |
|
| RJ01 | Rejection of invention patent application after publication |