CN201461390U - Pressure-regulating gear pump - Google Patents
Pressure-regulating gear pump Download PDFInfo
- Publication number
- CN201461390U CN201461390U CN2009201243734U CN200920124373U CN201461390U CN 201461390 U CN201461390 U CN 201461390U CN 2009201243734 U CN2009201243734 U CN 2009201243734U CN 200920124373 U CN200920124373 U CN 200920124373U CN 201461390 U CN201461390 U CN 201461390U
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- CN
- China
- Prior art keywords
- pressure
- gear pump
- pressure regulating
- left end
- regulating seat
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a pressure-adjusting gear pump, which comprises a pressure-regulating overflow valve and a gear pump, and is characterized in that the pressure-regulating overflow valve is arranged on the gear pump, and an oil inlet of the pressure-regulating overflow valve is communicated with an oil outlet of the gear pump, and an oil outlet hole of the pressure-regulating overflow valve is communicated with the corresponding oil drainage of the gear pump. The utility model can regulate the pressure and automatically unload, has convenient use and lower cost and is particularly suitable for a metal band sawing machine.
Description
Technical field
The utility model relates to a kind of gear pump, particularly a kind of pressure regulation gear pump that can be used in the band saw machine hydraulic system.
Background technique
At present, the full depth tooth wheel pump only provides hydraulic power in hydraulic system, and the hydraulic pressure size that gear pump provides must be regulated and control by the pressure adjustment relief valve of other connection.As the gear pump in the band saw machine hydraulic system, itself no voltage regulation function.For the hydraulic fluid pressure that makes gear pump offer operating cylinder can be satisfied the demand, the hydraulic oil that gear pump extrudes must be by external oil pipe and integrated package transmission, enter the pressure adjustment relief valve of being located on this integrated package then and carry out pressure regulation, supply with operating cylinder from the oil outlet output hydraulic oil of integrated package again.
But, adopt said method regulation and control gear pump to offer the hydraulic fluid pressure of operating cylinder, exist and install and use trouble, the more high shortcoming of cost.
Summary of the invention
The utility model provides a kind of easy to use, lower-cost pressure regulation gear pump for solving the problem of the no voltage regulation function of full depth tooth wheel pump itself.
The technical solution of the utility model is:
A kind of pressure regulation gear pump comprises pressure adjustment relief valve and gear pump, it is characterized in that: described gear pump is provided with pressure adjustment relief valve, and this pressure adjustment relief valve oil inlet hole communicates with the gear pump oil outlet, and the pressure adjustment relief valve oil outlet communicates with corresponding draining hole on the gear pump.
The utility model has been because gear pump has been provided with pressure adjustment relief valve, and pressure adjustment relief valve and gear pump become one, and need not pass through other oil pipe during application and not be connected with integrated package.Therefore, it is easy to use, and cost reduces.
In the utility model, described pressure adjustment relief valve is made up of the pressure regulating seat, pressure regulation thimble, pressure adjusting spring, spring housing, oil sealing, look nut, pressure regulating screw and the set screw nut that are installed on the valve opening, and its valve opening is located on the pump housing.
Described pressure regulating seat is provided with lumen orifice, and the oil outlet on the pressure regulating seat left end outer rim side communicates with corresponding draining hole on the gear pump; Oil inlet hole in the pressure regulating seat left end communicates with the gear pump oil outlet, and joins with pressure regulation thimble left end conehead in the pressure regulating seat; Pressure regulation thimble right-hand member is compressed by pressure adjusting spring; The pressure adjusting spring right-hand member is with spring housing, and the spring housing outside is provided with oil sealing, and the spring housing left end is plugged in the pressure regulating seat lumen orifice, and spring housing and pressure adjusting spring right-hand member stretch out pressure regulating seat; Look nut is connected in the valve opening port, its left end crimping pressure regulating seat; Pressure regulating screw is connected in the look nut through hole, and its left end crimp spring cover, right-hand member stretch out look nut and be connected and fixed nut.This structure make the utility model install and pressure regulation more convenient.
Described pressure regulating seat left end outer rim side is respectively equipped with some oil outlets, and is provided with annular space between pressure regulating seat left end outer rim side and the gear pump valve opening inwall.This structure makes the gear pump unloading performance more stable.
Described draining hole is provided with two, and is located at gear pump end face and side respectively, and wherein arbitrary draining hole is sealed by the plug screw.Its more convenient user uses.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is a pressure adjustment relief valve enlarged diagram among Fig. 1; Fig. 4 is a pressure regulating seat schematic representation among Fig. 2;
Fig. 3 is the right sectional view of A-A among Fig. 4; Fig. 5 is a look nut schematic representation among Fig. 2;
Fig. 6 is a pressure regulation thimble schematic representation among Fig. 2; Fig. 7 is Fig. 2 medi-spring cover schematic representation.
Embodiment
As shown in Figure 1, a kind of pressure regulation gear pump comprises pressure adjustment relief valve and gear pump, and described gear pump is provided with pressure adjustment relief valve, this pressure adjustment relief valve oil inlet hole 11 communicates with gear pump oil outlet 12, and the pressure adjustment relief valve oil outlet communicates with corresponding draining hole 2 and 21 on the gear pump.
Among Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, described pressure adjustment relief valve is made up of the pressure regulating seat 8, pressure regulation thimble 7, pressure adjusting spring 3, spring housing 5, oil sealing 4, look nut 9, pressure regulating screw 6 and the set screw nut 10 that are installed on the valve opening, and its valve opening is located on the pump housing 1.
Described pressure regulating seat 8 is provided with lumen orifice, and the oil outlet 81 on the pressure regulating seat 8 left end outer rim side communicates with corresponding draining hole 2 and 21 on the gear pump; Oil inlet hole 82 in pressure regulating seat 8 left ends communicates with gear pump oil outlet 12, and joins with pressure regulation thimble 7 left end coneheads in the pressure regulating seat 8; Pressure regulation thimble 7 cross sections are " ten " font, and its right-hand member is compressed by pressure adjusting spring 3; Pressure adjusting spring 3 right-hand members are with spring housing 5, and spring housing 5 outer middle side parts and right-hand member are respectively equipped with oil sealing 4, and spring housing 5 left ends are plugged in pressure regulating seat 8 lumen orifice, and spring housing 5 and pressure adjusting spring 3 right-hand members stretch out pressure regulating seat 8; Look nut 9 is connected in the valve opening port, its left end crimping pressure regulating seat 8; Pressure regulating screw 6 is connected in look nut 9 through holes, its left end crimp spring cover 5, and right-hand member stretches out look nut 9 and is connected and fixed nut 10.It can automatic deloading and by rotating pressure regulating screw 6 manual voltage regulations.
Described pressure regulating seat 6 left end outer rim side are respectively equipped with six equally distributed oil outlets 81, and pressure regulating seat 8 left end undergauges make between pressure regulating seat outer rim side and the gear pump valve opening inwall and establish annular space 14.This annular space effect is to make the unobstructed draining hole 2 that flows to of hydraulic oil energy that extrudes in the pressure regulating seat, makes the gear pump unloading performance more stable.
As shown in Figure 1 and Figure 2, the opening in described draining hole 2 up, the opening in draining hole 21 and gear pump are into and out of oilhole in the same way.Draining hole 21 is provided with plug screw 13.Certainly, also can be with the sealing of draining hole 2 usefulness plug screws, draining hole 21 is open-minded.
Also be provided with conventional oil inlet hole 11 on the utility model pump housing 1, and the through hole of the installation on the flange of the pump housing left and right sides, connection front and back six bolts of pump case and two locating pins.Pressure adjustment relief valve can also can adopt other form with outside the above-mentioned cone valve type structure, as ball-valve type pressure adjustment relief valve etc.
The utility model rotates pressure regulating screw 6 can compress pressure adjusting spring, increases the output hydraulic pressure of gear pump, otherwise reduces.It is easy to use, and cost is lower, is particularly suitable for using on the band saw machine.
Claims (5)
1. a pressure regulation gear pump comprises pressure adjustment relief valve and gear pump, it is characterized in that: described gear pump is provided with pressure adjustment relief valve, and this pressure adjustment relief valve oil inlet hole communicates with the gear pump oil outlet, and the pressure adjustment relief valve oil outlet communicates with corresponding draining hole on the gear pump.
2. pressure regulation gear pump according to claim 1, it is characterized in that: described pressure adjustment relief valve is made up of the pressure regulating seat, pressure regulation thimble, pressure adjusting spring, spring housing, oil sealing, look nut, pressure regulating screw and the set screw nut that are installed on the valve opening, and its valve opening is located on the pump housing.
3. pressure regulation gear pump according to claim 2 is characterized in that: described pressure regulating seat is provided with lumen orifice, and the oil outlet on the pressure regulating seat left end outer rim side communicates with corresponding draining hole on the gear pump; Oil inlet hole in the pressure regulating seat left end communicates with the gear pump oil outlet, and joins with pressure regulation thimble left end conehead in the pressure regulating seat; Pressure regulation thimble right-hand member is compressed by pressure adjusting spring; The pressure adjusting spring right-hand member is with spring housing, and the spring housing outside is provided with oil sealing, and the spring housing left end is plugged in the pressure regulating seat lumen orifice, and spring housing and pressure adjusting spring right-hand member stretch out pressure regulating seat; Look nut is connected in the valve opening port, its left end crimping pressure regulating seat; Pressure regulating screw is connected in the look nut through hole, and its left end crimp spring cover, right-hand member stretch out look nut and be connected and fixed nut.
4. pressure regulation gear pump according to claim 3 is characterized in that: described pressure regulating seat left end outer rim side is respectively equipped with some oil outlets, and is provided with annular space between pressure regulating seat left end outer rim side and the gear pump valve opening inwall.
5. according to claim 1 or 4 described pressure regulation gear pumps, it is characterized in that: described draining hole is provided with two, and is located at gear pump end face and side respectively, and wherein arbitrary draining hole is sealed by the plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201243734U CN201461390U (en) | 2009-07-08 | 2009-07-08 | Pressure-regulating gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201243734U CN201461390U (en) | 2009-07-08 | 2009-07-08 | Pressure-regulating gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461390U true CN201461390U (en) | 2010-05-12 |
Family
ID=42388744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201243734U Expired - Fee Related CN201461390U (en) | 2009-07-08 | 2009-07-08 | Pressure-regulating gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461390U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777381A (en) * | 2012-07-24 | 2012-11-14 | 合肥川源液压设备有限公司 | Safety valve component for gear oil pump |
| CN106050650A (en) * | 2016-07-19 | 2016-10-26 | 珠海格力电器股份有限公司 | Gear pump and bypass oil path structure thereof |
| CN106481546A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of high rotating speed adjustable pressure small gear pump |
| CN109973381A (en) * | 2019-03-19 | 2019-07-05 | 中国航发湖南动力机械研究所 | Gear pump and retarder |
| CN110594149A (en) * | 2019-10-09 | 2019-12-20 | 珠海格力电器股份有限公司 | Gear pump and differential pressure regulating system |
-
2009
- 2009-07-08 CN CN2009201243734U patent/CN201461390U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777381A (en) * | 2012-07-24 | 2012-11-14 | 合肥川源液压设备有限公司 | Safety valve component for gear oil pump |
| CN106481546A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of high rotating speed adjustable pressure small gear pump |
| CN106050650A (en) * | 2016-07-19 | 2016-10-26 | 珠海格力电器股份有限公司 | Gear pump and bypass oil path structure thereof |
| CN106050650B (en) * | 2016-07-19 | 2018-02-09 | 珠海格力电器股份有限公司 | Gear pump and its bleed off circuit structure |
| CN109973381A (en) * | 2019-03-19 | 2019-07-05 | 中国航发湖南动力机械研究所 | Gear pump and retarder |
| CN109973381B (en) * | 2019-03-19 | 2021-05-28 | 中国航发湖南动力机械研究所 | Gear pump and speed reducer |
| CN110594149A (en) * | 2019-10-09 | 2019-12-20 | 珠海格力电器股份有限公司 | Gear pump and differential pressure regulating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20140708 |
|
| EXPY | Termination of patent right or utility model |