CN205277800U - Take gear pump of relief valve - Google Patents
Take gear pump of relief valve Download PDFInfo
- Publication number
- CN205277800U CN205277800U CN201520960920.8U CN201520960920U CN205277800U CN 205277800 U CN205277800 U CN 205277800U CN 201520960920 U CN201520960920 U CN 201520960920U CN 205277800 U CN205277800 U CN 205277800U
- Authority
- CN
- China
- Prior art keywords
- pump case
- main drive
- drive shaft
- toothed gear
- gear
- 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
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a take gear pump of relief valve, including the driving shaft, driven shaft and pump case, be equipped with the cavity in the pump case, the cover has the driving gear on the driving shaft, the cover has driven gear on the driven shaft, driving gear and the linear meshing of driven gear, driving gear and driven gear divide into suction chamber and discharge side with the cavity, the pump case both sides are equipped with front end housing and rear end cap respectively, the front end housing passes through the bearing to be supported on driving shaft and driven shaft, the rear end cap passes through the bearing to be supported on driving shaft and driven shaft, the driving shaft stretches out the front end housing and links to each other with outside power shaft, be equipped with the passageway of connecting suction chamber and discharge side on the pump case, still be equipped with the relief valve on the pump case, the relief valve communicates with each other with the passageway. The utility model discloses a beneficial effect lies in: in case when discharge pressure exceedes the safe pressure in the use, liquid will back down the relief valve and flow back to the suction chamber to the reliability of whole device work has been guaranteed.
Description
Technical field
The utility model relates to the toothed gear pump of a kind of band safety valve.
Background technology
Toothed gear pump relies on the working volume formed between pumping cylinder and meshing gearwheel change and move to carry liquid or make it the rotary pump of supercharging. Toothed gear pump forms two enclosed spaces by two gears, the pump housing and front and rear covers, when gear rotates, the volume that gear disengages space, side is big from little change, form vacuum, being sucked by liquid, liquid, from diminishing greatly, is squeezed in pipeline and goes by the volume in the space of gears meshing side, chamber is that the path of countact by two gears separates with discharging to suck chamber, and the pressure of the relief outlet of toothed gear pump depends on the size of pump discharge place resistance completely.
Toothed gear pump is that liquid is discharged by the squeeze relying on the gear of engagement to produce from relief outlet, if this squeeze is excessive when exceeding authorized pressure value, by the damage of accelerating gear, and then affect the reliability that toothed gear pump works.
Practical novel content
The utility model is intended to provide the toothed gear pump of a kind of band safety valve, with solve squeeze excessive time, the problem of toothed gear pump working reliability.
The toothed gear pump of the band safety valve in this scheme, comprise main drive shaft, driven shaft and pump case, cavity it is provided with in pump case, on main drive shaft, cover has driving toothed gear, on driven shaft, cover has follower gear, driving toothed gear linearly engages with follower gear, cavity is divided into suction chamber and discharges chamber by driving toothed gear and follower gear, pump case both sides are respectively equipped with front end end cover and rear end cap, front end end cover by bearings on main drive shaft and driven shaft, rear end cap by bearings on main drive shaft and driven shaft, main drive shaft stretches out front end end cover and is connected with external impetus axle, pump case is provided with the passage connecting and sucking chamber and discharge chamber, pump case is also provided with safety valve, safety valve communicates with passage.
Principle of work and the effect of this scheme be: main drive shaft rotates under the effect of outside power shaft, driving toothed gear rotates with main drive shaft, the follower gear now engaged with driving toothed gear moves along contrary direction, it is positioned at the driving toothed gear of suction chamber side and the tooth of follower gear is entered the state exiting engagement by the state of engagement, the space now sucking chamber will increase, produce local vacuum, liquid will enter and suck chamber, along with the rotation of gear, the tooth being full of liquid turns from suction chamber, and transfer to along pump housing endophragm and discharge chamber, when each tooth reenters engagement successively, the liquid of each between cog by nibble into gear extrusion and from discharge chamber discharge, driving toothed gear and follower gear ceaselessly rotate, just can continuously suck and expel liquid, use procedure exceedes safe pressure once outlet pressure, safety valve of backing down liquid flows back to and sucks chamber, thus ensure that the reliability that whole device works.
Further, front end end cover being offered the groove for labyrinth seal, the structure of labyrinth seal is simple and sealing effect is better.
Further, bearing all adopts the deep groove ball bearing of band dual face seals lid, and the dependable performance of deep groove ball bearing, is widely used.
Further, main drive shaft is connected with external impetus axle by flat key, and the keyway of flat key is easy to process, and the part convenient disassembly that flat key connects.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the sectional view of the A-A of Fig. 1 embodiment.
Embodiment
Below by embodiment, the utility model is described in further detail:
Reference numeral in Figure of description comprises: rear end cap 1, pump case 2, driven shaft 3, front end end cover 4, main drive shaft 5, suction chamber 6, discharge chamber 7, driving toothed gear 8, follower gear 9, safety valve 10.
Embodiment is substantially as shown in Figures 1 and 2: the toothed gear pump of band safety valve, comprise main drive shaft 5, main drive shaft 5 axle stretch end has offered flat key groove, main drive shaft 5 is connected with external impetus axle by flat key, the left end of main drive shaft 5 stretches in the through hole of front end end cover 4, the part that main drive shaft 5 stretches into front end end cover 4 is from left to right provided with rear bearing successively, driving toothed gear 8 and front bearing, the diameter installing front bearing and rear bearing place on main drive shaft 5 is less than the diameter installing driving toothed gear 8 place, the axial location of bearing on main drive shaft 5 can be limited by this kind of structure design, convenient installation, at main drive shaft 5, driving toothed gear 8 place is installed and has also offered keyway, it is connected by flat key between driving toothed gear 8 with main drive shaft 5.
It is provided with driven shaft 3 in the lower section of main drive shaft 5, driven shaft 3 is divided into three sections, and in the middle of wherein, the more left and right two sections of diameters of section are relatively big, and the middle section of driven shaft 3 is provided with follower gear 9, the position that left and right two sections of diameters are less is provided with bearing, and driven shaft 3 is connected with follower gear 9 by flat key.
Driving toothed gear 8 and follower gear 9 are all arranged in the cavity of pump case 2, driving toothed gear 8 linearly engages with follower gear 9 and cavity is divided into the suction chamber 6 in left side and the discharge chamber 7 on right side, the passage being connected and sucking chamber 6 and discharge chamber 7 also it is provided with in the upside of pump case 2, being provided with safety valve 10 on the right side of passage, safety valve 10 place is also provided with set screw.
End cap 1 after the left side of pump case 2 is provided with, rear end cap 1 is provided with two bearings, rear end cap 1 is connected with main drive shaft 5 and driven shaft 3 respectively by two bearings, it is provided with front end end cover 4 on the right side of pump case 2, front end end cover 4 is also provided with two bearings, front end end cover 4 is supported in respectively by two bearings on main drive shaft 5 and driven shaft 3, and the groove for labyrinth seal is also offered in the position that main drive shaft 5 stretches out on front end end cover 4.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this. Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, it is also possible to make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability that the utility model is implemented. The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification sheets etc. record the content that may be used for explaining claim.
Claims (4)
1. the toothed gear pump of a band safety valve, it is characterized in that, comprise main drive shaft, driven shaft and pump case, it is provided with cavity in described pump case, on described main drive shaft, cover has driving toothed gear, on described driven shaft, cover has follower gear, described driving toothed gear linearly engages with described follower gear, described cavity is divided into intake antrum and water chamber by described driving toothed gear and described follower gear, described pump case both sides are respectively equipped with front end end cover and rear end cap, described front end end cover by bearings on described main drive shaft and described driven shaft, described rear end cap by bearings on described main drive shaft and described driven shaft, described main drive shaft stretches out described front end end cover and is connected with external impetus axle, described pump case is provided with the passage connecting described intake antrum and described water chamber, described pump case is also provided with safety valve, described safety valve communicates with described passage.
2. the toothed gear pump of band safety valve according to claim 1, it is characterised in that: described front end end cover is offered the groove for labyrinth seal.
3. the toothed gear pump of band safety valve according to claim 2, it is characterised in that: described bearing all adopts the deep groove ball bearing of band dual face seals lid.
4. the toothed gear pump of band safety valve according to claim 3, it is characterised in that: described main drive shaft is connected with external impetus axle by flat key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520960920.8U CN205277800U (en) | 2015-11-28 | 2015-11-28 | Take gear pump of relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520960920.8U CN205277800U (en) | 2015-11-28 | 2015-11-28 | Take gear pump of relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277800U true CN205277800U (en) | 2016-06-01 |
Family
ID=56062381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520960920.8U Expired - Fee Related CN205277800U (en) | 2015-11-28 | 2015-11-28 | Take gear pump of relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205277800U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087266A (en) * | 2018-01-09 | 2018-05-29 | 大晃机械（青岛）有限公司 | A kind of gear pump |
| CN108678948A (en) * | 2018-04-28 | 2018-10-19 | 河南航天液压气动技术有限公司 | A kind of hydraulic system and its gear pump |
-
2015
- 2015-11-28 CN CN201520960920.8U patent/CN205277800U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087266A (en) * | 2018-01-09 | 2018-05-29 | 大晃机械（青岛）有限公司 | A kind of gear pump |
| CN108678948A (en) * | 2018-04-28 | 2018-10-19 | 河南航天液压气动技术有限公司 | A kind of hydraulic system and its gear pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104564658A (en) | Energy-saving type external-meshing gear pump | |
| CN205277800U (en) | Take gear pump of relief valve | |
| CN107061972B (en) | Variable displacement rotor pump | |
| CN203926013U (en) | A kind of variable pitch dry screw vacuum pump | |
| CN110410317B (en) | Backward flow formula light oil gear pump | |
| CN205135990U (en) | Novel external gear pump | |
| CN206346906U (en) | A kind of new external tooth type gear pump | |
| CN105370565A (en) | Gear pump provided with safety valve | |
| CN103967782B (en) | Two-way Three gear pump | |
| CN101265898A (en) | Planet cyclic gear train type polygonal rotor pump | |
| CN205937099U (en) | Blade slip rotation type driven pump | |
| CN202867199U (en) | External-meshing gear pump | |
| CN2934664Y (en) | Bi-directional gear pump | |
| CN205277798U (en) | A gear pump for car | |
| CN205533188U (en) | Novel energy -saving hydraulic pump | |
| CN211549970U (en) | Gear pump and speed reducer | |
| CN108167181A (en) | A kind of gear pump | |
| CN103541893A (en) | Inner gearing shaft head cycloid gear pump | |
| CN219299513U (en) | Gear pump with sealing and self-priming functions | |
| CN201206544Y (en) | Polygon rotor pump of planet epicyclic train | |
| CN106837783B (en) | Helical gear and helical gear pump with large wrap angle and few teeth | |
| CN203948295U (en) | A kind of single-screw air compressor that utilizes water lubrication | |
| CN2097295U (en) | Internal-engagement internal cycloidal oil pump | |
| CN214787849U (en) | High vacuum oil pump | |
| CN204419562U (en) | A kind of gear pump |
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: 20160601 Termination date: 20161128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |