CN101334024A - High-pressure gear water pump - Google Patents
High-pressure gear water pump Download PDFInfo
- Publication number
- CN101334024A CN101334024A CNA2008100293647A CN200810029364A CN101334024A CN 101334024 A CN101334024 A CN 101334024A CN A2008100293647 A CNA2008100293647 A CN A2008100293647A CN 200810029364 A CN200810029364 A CN 200810029364A CN 101334024 A CN101334024 A CN 101334024A
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- water pump
- pressure gear
- gear
- side plate
- pressure
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Abstract
The invention discloses a high pressure gear water pump, which comprises a front end cover, a rear end cover and a pump body which form an enclosed space together. A pair of main axle and driven axle which is meshed mutually and driven by a driving gear and a driven gear are arranged in the pump body, floating front and rear side plates are respectively installed on both sides of the two working gears, and ceramic coatings are arranged on end surfaces where the front and rear side plates are contacted with the working gears as well as two inner hole walls of the front and rear side plates; 1 to 4 grooves in total are arranged on the wall directing toward one side of a liquid sucking opening of the high pressure gear water pump inside the two inner holes of the front side plate, and a water delivering channel for communicating the grooves and a liquid discharging hole of the high pressure gear water pump is arranged on the front side plate; 1 to 4 grooves in total are arranged on the wall directing to one side of a liquid sucking opening of the high pressure gear water pump inside the two inner holes of the rear side plate, and a water delivering channel for communicating the grooves and the liquid discharging hole of the high pressure gear water pump is arranged on the rear side plate. The high pressure gear water pump has the advantages of small abrasion and high volumetric efficiency.
Description
Technical field
The present invention relates to a kind of high-pressure water pump, particularly a kind of high-pressure gear water pump.
Background technique
Common high-pressure water pump is a Centrifugal water pump, reaches the high pressure degree for making outlet pressure, must adopt plural serial stage, therefore this high-pressure water pump complex structure, bulky, heavy, consumptive material is many, price is high.And common positive displacement pump (gear pump, vane pump, notes plug pump etc.) all is medium with fluid, because the fluid ratio is easier to form lubricant film and anti-corrosion property is arranged, can guarantee the proper functioning of positive displacement pump.Therefore, general high-pressure gear pump also is to be the oil pump of medium with oil.High-pressure gear pump is used in the appearance water-based that needs to solve pump in the pure water transmission (anti-corrosion, wear-resisting, can generate self-lubricating film etc.) and leaks serious problem (viscosity of water be oil viscosity 1/30～1/50).In the prior art, there is the researcher to propose by forward and backward pressure compensation plate is set in the pump housing of high-pressure gear pump, and establishing technological schemes such as ceramic layer on two contacted end faces of pitch wheel on pressure compensation plate and the transmission shaft, tentatively solved the narrow limitation that the general high voltage gear pump can only be applicable to the fluid medium.But this high-pressure gear water pump is because the liquid port pressure of pump is big, little and the radial imbalance force that produces of liquid sucting port pressure, make the serious wear of the axle journal of transmission shaft to bearing hole, cause the dynamic characteristic of pump not ideal enough, and the volumetric efficiency of this kind high-pressure gear pump is not high, and is not ideal enough to the control of revealing yet.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of high-pressure gear water pump little, that transmission quality is high, noise is low, volumetric efficiency is high, leakage is few that weares and teares is provided.
Be the technological scheme that realizes that purpose of the present invention adopts: a kind of high-pressure gear water pump, comprise front cover, the rear end cover and the pump housing, before, the rear end cover and the pump housing are formed the space of a sealing, in the pump housing, be provided with drive main spindle and driven shaft, on two axles, have a pair of intermeshing driving gear and driven gear respectively, be separately installed with unsteady front side plate and back side panel in the both sides of driving gear and driven gear, preceding, on back side panel and a pair of intermeshing driving gear and the end face that driven gear contacts and before, be equipped with ceramic layer on two inner hole walls of back side panel; In two endoporus of described front side plate, on the wall of liquid sucting port one side of described high-pressure gear water pump, be provided with 1～4 groove altogether, on described front side plate, have the water transport channel that is communicated with described groove and described high-pressure gear water pump liquid port; In two endoporus of described back side panel, on the wall of liquid sucting port one side of described high-pressure gear water pump, be provided with 1～4 groove altogether, on described back side panel, have the water transport channel that is communicated with described groove and described high-pressure gear water pump liquid port.
In order to realize the present invention better, each endoporus is equipped with two rectangular recess on the wall of liquid sucting port one side of described high-pressure gear water pump in two endoporus of described front side plate; Each endoporus is equipped with two rectangular recess on the wall of liquid sucting port one side of described high-pressure gear water pump in two endoporus of described back side panel.
The material of the described pump housing, front cover and rear end cover is a rustproof aluminum alloy, so just makes the particular surroundings that described high-pressure gear water pump can be applied in humidity or cause easily getting rusty.
Be equipped with nitride layer on the working surface of described a pair of intermeshing driving gear and driven gear and the working surface of drive main spindle and driven shaft.
Described nitride layer is the alloyed steel nitride layer.
The flank of one side of described a pair of intermeshing driving gear and driven gear non-stress is the flank of handling through tip relief.
Be provided with arc Stamping Steel Ribbon between described front side plate and the front cover; Be provided with arc Stamping Steel Ribbon between described back side panel and the rear end cover.
At the end face that described front side plate contacts with front cover, described front side plate is provided with a water transport channel and a water transport channel that is communicated with described liquid port and described driven shaft that is communicated with described liquid port and described drive main spindle towards liquid port one side of described high-pressure gear water pump; At the end face that described back side panel contacts with rear end cover, described back side panel is provided with a water transport channel and a water transport channel that is communicated with described liquid port and described driven shaft that is communicated with described liquid port and described drive main spindle towards liquid port one side of described high-pressure gear water pump.
Described ceramic layer is the novel composite ceramic layer, and it is by Al
2O
3Embedded the ultra-fine (＜20nm) ceramic powder and forming of nano superhard.
The present invention with respect to the advantage and the effect of prior art is:
1, in the endoporus of forward and backward side plate, on the wall of liquid sucting port one side of high-pressure gear water pump, rectangular recess is set, the highly pressurised liquid that is communicated with the liquid port place of high-pressure gear water pump, therefore, highly pressurised liquid in the groove has played radial support and lubricated effect to drive main spindle and driven shaft, thereby the liquid sucting port of high-pressure gear water pump and the radial imbalance force that liquid port causes because of pressure difference have been alleviated, be equivalent to the effect of hydrostatic bearing, it has alleviated the wearing and tearing of bearing, simultaneously also reduced noise, the dynamic characteristic when having improved the high-pressure gear pump work.
2, on the working surface of the working surface of a pair of intermeshing driving gear and driven gear and drive main spindle and driven shaft, be equipped with nitride layer, this nitride layer is the alloyed steel nitride layer, its surface hardness height, and wear resistance is good, corrosion resistance is strong, has good appearance water-based; On forward and backward side plate and a pair of intermeshing driving gear and end face that driven gear contacts and the ceramic layer that is provided with on the inner hole wall of forward and backward side plate, in the pure water medium, can generate the water lubrication film, and higher hardness and advantages of good abrasion, decay resistance are arranged.This ceramic layer and alloyed steel nitride layer spouse mutually are more satisfactory pure water medium suitable material, so make high-pressure gear water pump of the present invention have good volumetric efficiency and can reduce leakage effectively.
3, when a pair of intermeshing driving gear and driven gear work, under loading, the gear teeth produce bending deflection, influence involute profile correct engagement characteristic and caused the transmission noise, the present invention handles by carry out tip relief at the flank position in a side of gear non-stress, make its gear teeth under the bending deflection state basically near the meshing condition of involute profile, so that being in, it can reach the driving fit contact under force and deformation state, backlash amount when reducing the engagement of two gear teeth, reduce and leak, improve volumetric efficiency.
4, when high-pressure gear water pump is worked, the bi-side of front side plate and back side panel and driving gear and driven gear under the effect of high pressure liquid stream, realize fitting tightly, and have so just improved the volumetric efficiency of this high-pressure gear water pump, have reduced leakage rate.
5, described ceramic layer and existing patented technology are relatively generating Al
2O
3In the manufacturing process of ceramic layer, having embedded nano superhard, ultra-fine (＜20nm) ceramic powder forms new composite ceramic layer, with general Al
2O
3Ceramic layer relatively has higher hardness and wear resistance, and the rare earth elements of Jia Ruing plays the activate effect in promoting the ceramic layer generative process simultaneously.
Description of drawings
Fig. 1 is the structural representation of high-pressure gear water pump of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the left view of front side plate of the high-pressure gear water pump of Fig. 1;
Fig. 4 is the partial sectional view of front side plate of the high-pressure gear water pump of Fig. 1;
Fig. 5 is the left view (having arc Stamping Steel Ribbon) of front side plate of the high-pressure gear water pump of Fig. 1;
Fig. 6 is a pair of intermeshing driving gear and the intermeshing schematic representation of driven gear of the high-pressure gear water pump of Fig. 1;
Fig. 7 is a side of the non-stress of gear teeth d among Fig. 6 is carried out tip relief at the flank position a schematic representation.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
The concrete structure of high-pressure gear water pump of the present invention such as Fig. 1～shown in Figure 2: high-pressure gear water pump comprises front cover 2, the pump housing 4 and rear end cover 7, and the pump housing 4, front cover 2 and rear end cover 7 all adopt the rustproof aluminum alloy material.Front cover 2, the pump housing 4 and rear end cover 7 are formed the space of a sealing, are provided with O RunddichtringO 3,26 between the pump housing 4 and front cover 2 and the rear end cover 7; Be provided with drive main spindle 1 in the pump housing 4, have driving gear 5 on this axle, there is the skeleton composite sealing ring 15 of J-shaped this axle and front cover 2 contacting points; In the pump housing 4, also be provided with driven shaft 14 and on driven gear 27; Be separately installed with unsteady front side plate 13 and back side panel 6 in the both sides of driving gear 5 and driven gear 27, front side plate 13 is identical with the structure of back side panel 6; As shown in Figure 5, be provided with arc Stamping Steel Ribbon 28 between front cover 2 and the front side plate 13, be provided with the arc Stamping Steel Ribbon of structure as hereinbefore between rear end cover 7 and the back side panel 6; Skeleton composite sealing ring 15 of J-shaped and O RunddichtringO 3,26 can prevent the leaked liquid in the pump housing.As shown in Figure 5, the end face that contacts with front cover 2 at front side plate 13 is provided with a highly pressurised liquid passage 22 and a highly pressurised liquid passage 22 that is communicated with liquid port 16 and driven shaft 14 that is communicated with liquid port 16 and drive main spindle 1 at front side plate 13 on the territory, a lateral areas 21 of the liquid port 16 of high-pressure gear water pump; Same, at the end face that back side panel 6 contacts with rear end cover 7, the relevant position on back side panel 6 also is provided with two highly pressurised liquid passages 22 that are connected with liquid port 16.When high-pressure gear water pump was worked, front side plate 13 and back side panel 6 and two end faces that driving gear 5 contacts with driven gear 27 under the effect of high pressure liquid stream, were realized fitting tightly.As shown in Figure 1, on front side plate 13, back side panel 6 and driving gear 5 and end face that driven gear 27 contacts, one deck composite ceramic layer 11 and 10 are arranged; One deck composite ceramic layer 12 and 8 are arranged respectively on the outer surface of front side plate 13 and back side panel 6, on two inner hole walls of front side plate 13 and back side panel 6 one deck composite ceramic layer 9 is arranged all.One deck alloyed steel nitride layer is all arranged on the working surface of the working surface of a pair of intermeshing driving gear 5 and driven gear 27 and drive main spindle 1 and driven shaft 14.As Fig. 3～shown in Figure 4, each endoporus is equipped with two rectangular recess 20 on the wall of liquid sucting port 17 1 sides of high-pressure gear water pump in two endoporus of front side plate 13; Same, each endoporus is equipped with two rectangular recess 20 on the wall of liquid sucting port 17 1 sides of high-pressure gear water pump in two endoporus of back side panel 6.When high-pressure gear water pump was worked, high pressure liquid stream flowed into rectangular recess 20 from liquid port 16 through passage 18,19.High pressure water flows in this rectangular recess 20 active drive axle and driven shaft is played a supportive role, to reduce the uneven radial force that causes greatly because of outlet pressure, be equivalent to the effect of hydrodynamic journal liquid polymers, it has alleviated the wearing and tearing of bearing, improve gear-driven quality, reduce noise.
High-pressure gear water pump of the present invention is work like this: under the drive of power supply, drive main spindle 1 revolution drives driven shaft 14 revolutions by a pair of intermeshing driving gear 5 with driven gear 27 simultaneously.In turning course, variation has taken place for seal area 23 that two couples of gear teeth a, b and c, d among Fig. 6 are contained and 24 sealed volume: by illustrated sense of rotation, regional 23 from large to small, then changes from small to big in zone 24, the former facilitates the pressure of liquid stream to raise, and the latter facilitates the pressure of liquid stream to reduce.The liquid head piece that pressure raises is liquid port 16 (see figure 2)s of pump, and the liquid head piece that pressure reduces is liquid sucting port 17 (see figure 2)s.
As shown in Figure 7, meshing quality for the working gear that improves high-pressure gear water pump of the present invention, reduce the transmission noise, improve dynamic characteristic, the gear teeth to intermeshing driving gear 5 and driven gear 27, produced under the diastrophic state at stand under load, can handle, produced when avoiding the two intermeshing gear teeth to work and impact by a side flank position 25 of above-mentioned gear teeth non-stress being carried out tip relief.Simultaneously, because the gear teeth have been carried out tip relief, the backlash of two gear teeth that are meshed can be optimized under the influence of considering thermal distortion, select the best clearance value, thereby reduced the leakage rate of flank, further improved the volumetric efficiency of gear pump and the working pressure of outlet.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; anyly do not deviate from the change done under spirit of the present invention and the principle, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. high-pressure gear water pump, comprise front cover, rear end cover and the pump housing, the forward and backward end cap and the pump housing are formed the space of a sealing, in the pump housing, be provided with drive main spindle and driven shaft, on two axles, have a pair of intermeshing driving gear and driven gear respectively, be separately installed with unsteady front side plate and back side panel in the both sides of driving gear and driven gear, on forward and backward side plate and a pair of intermeshing driving gear and end face that driven gear contacts and on two inner hole walls of forward and backward side plate, be equipped with ceramic layer; It is characterized in that, in two endoporus of described front side plate, on the wall of liquid sucting port one side of described high-pressure gear water pump, be provided with 1～4 groove altogether, on described front side plate, have the water transport channel that is communicated with described groove and described high-pressure gear water pump liquid port; In two endoporus of described back side panel, on the wall of liquid sucting port one side of described high-pressure gear water pump, be provided with 1～4 groove altogether, on described back side panel, have the water transport channel that is communicated with described groove and described high-pressure gear water pump liquid port.
2. according to the described high-pressure gear water pump of claim 1, it is characterized in that each endoporus is equipped with two rectangular recess on the wall of liquid sucting port one side of described high-pressure gear water pump in two endoporus of described front side plate; Each endoporus is equipped with two rectangular recess on the wall of liquid sucting port one side of described high-pressure gear water pump in two endoporus of described back side panel.
3. according to the described high-pressure gear water pump of claim 1, it is characterized in that the material of the described pump housing, front cover and rear end cover is a rustproof aluminum alloy.
4. according to the described high-pressure gear water pump of claim 1, it is characterized in that, be equipped with nitride layer on the working surface of described a pair of intermeshing driving gear and driven gear and the working surface of drive main spindle and driven shaft.
5. according to the described high-pressure gear water pump of claim 2, it is characterized in that, be equipped with nitride layer on the working surface of described a pair of intermeshing driving gear and driven gear and the working surface of drive main spindle and driven shaft.
6. according to claim 4 or 5 described high-pressure gear water pumps, it is characterized in that described nitride layer is the alloyed steel nitride layer.
7. according to claim 1,2,4 or 5 described high-pressure gear water pumps, it is characterized in that the flank of a side of described a pair of intermeshing driving gear and driven gear non-stress is the flank of handling through tip relief.
8. according to claim 1 or 2 described high-pressure gear water pumps, it is characterized in that, be provided with arc Stamping Steel Ribbon between described front side plate and the front cover; Be provided with arc Stamping Steel Ribbon between described back side panel and the rear end cover.
9. according to claim 1 or 2 described high-pressure gear water pumps, it is characterized in that, at the end face that described front side plate contacts with front cover, described front side plate is provided with a water transport channel and a water transport channel that is communicated with described liquid port and described driven shaft that is communicated with described liquid port and described drive main spindle towards liquid port one side of described high-pressure gear water pump; At the end face that described back side panel contacts with rear end cover, described back side panel is provided with a water transport channel and a water transport channel that is communicated with described liquid port and described driven shaft that is communicated with described liquid port and described drive main spindle towards liquid port one side of described high-pressure gear water pump.
10. according to the described high-pressure gear water pump of claim 1, it is characterized in that described ceramic layer is a composite ceramic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100293647A CN101334024B (en) | 2008-07-10 | 2008-07-10 | High-pressure gear water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100293647A CN101334024B (en) | 2008-07-10 | 2008-07-10 | High-pressure gear water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101334024A true CN101334024A (en) | 2008-12-31 |
| CN101334024B CN101334024B (en) | 2010-11-10 |
Family
ID=40196824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100293647A Expired - Fee Related CN101334024B (en) | 2008-07-10 | 2008-07-10 | High-pressure gear water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101334024B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392818A (en) * | 2011-11-24 | 2012-03-28 | 广东达诚机械有限公司 | Gear pump |
| CN102619749A (en) * | 2012-04-11 | 2012-08-01 | 涂雪龙 | Impulse-wave gear pump |
| CN105041638A (en) * | 2015-08-31 | 2015-11-11 | 王志强 | Conveying metering water pump for family heating and metering regulating device of conveying metering water pump |
| CN108425837A (en) * | 2018-01-18 | 2018-08-21 | 广东精铟海洋工程股份有限公司 | A kind of crescent gear pump with straight-side profile of low noise |
-
2008
- 2008-07-10 CN CN2008100293647A patent/CN101334024B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392818A (en) * | 2011-11-24 | 2012-03-28 | 广东达诚机械有限公司 | Gear pump |
| CN102392818B (en) * | 2011-11-24 | 2015-05-13 | 广东达诚机械有限公司 | Gear pump |
| CN102619749A (en) * | 2012-04-11 | 2012-08-01 | 涂雪龙 | Impulse-wave gear pump |
| CN102619749B (en) * | 2012-04-11 | 2015-05-06 | 涂雪龙 | Impulse-wave gear pump |
| CN105041638A (en) * | 2015-08-31 | 2015-11-11 | 王志强 | Conveying metering water pump for family heating and metering regulating device of conveying metering water pump |
| CN108425837A (en) * | 2018-01-18 | 2018-08-21 | 广东精铟海洋工程股份有限公司 | A kind of crescent gear pump with straight-side profile of low noise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101334024B (en) | 2010-11-10 |
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Granted publication date: 20101110 Termination date: 20130710 |