CN205423154U - Gear pump - Google Patents
Gear pump Download PDFInfo
- Publication number
- CN205423154U CN205423154U CN201620212581.XU CN201620212581U CN205423154U CN 205423154 U CN205423154 U CN 205423154U CN 201620212581 U CN201620212581 U CN 201620212581U CN 205423154 U CN205423154 U CN 205423154U
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- CN
- China
- Prior art keywords
- exhaust pipe
- pump
- pump housing
- float
- air inlet
- 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 discloses a gear pump, including the pump body and the pump cover of lid on the pump body, be provided with the inside and outside exhaust body of the intercommunication pump body on the pump cover, the one end endotheca of blast pipe position in the pump body has unsteady valve rod spare, be provided with the inlet port that runs through blast pipe side wall on the exhaust body, float valve rod spare in that the blast pipe is internal when reciprocating, make the internal portion of blast pipe and inlet port intercommunication with isolated, the utility model discloses gear pump is under the lower circumstances of liquid level, and the internal outside discharge of blast pipe can be followed at any time to the oil gas in the pump body, can not hoard for speculation in the pump body, makes the inside and outside atmospheric pressure of the pump body stable, and when treating that the liquid level rises, the valve rod can rise, stops up the inlet port, makes liquid can not follow the exhaust body and overflows, plays better leak protection effect to liquid.
Description
Technical field
This utility model relates to a kind of pump, more specifically, it relates to a kind of gear pump.
Background technology
The swept volume that gear pump is dependent on being formed between pumping cylinder and meshing gear changes and movement carries liquid or is allowed to the drum pump of supercharging, formed two by two gears, the pump housing with front and rear covers and close space, when pinion rotation, the volume in space of side of being out of gear is big from little change, form vacuum, drawing liquid into, the volume in the space of gear engagement side is from diminishing greatly, and is clamp-oned in pipeline by liquid.Suction chamber is that the path of contact by two gears separates with discharge chamber, existing gear pump includes the pump housing, gear, rotor, motor, pump cover, exhaust valve component, overflow valve, outlet valve, intake channel and exit passageway it is provided with on the pump housing, filter it is provided with in intake channel, transmission is engaged each other by rotor and gear, oil is transported to pump housing outlet from pump housing import, outlet oil is played the effect of buffer shock-absorbing by air bag, at present, existing gear pump uses at liquid gas two-phase mixtures fluid mixture condition as fuel charger, fluid-mixing has the release of big energy in the exit having pressure, make the fluctuation of outlet channel inner pressure bigger, not only produce the biggest vibrations and noise, and it is easily damaged pump and auxiliary facility, affect product traveling comfort and reliability.
In order to solve the problems referred to above, in the Chinese patent document that number of patent application is " 201020050259.4 ", describe the gear pump of a kind of band shock-absorption air bag, including pump assembly, pump cover assembly, intake channel, exit passageway, rotor assembly, gear assembly, outlet valve, overflow valve and sealing member and installed part, filter and float-controlled valve assembly it is provided with in exit passageway, shock-absorption air bag it is provided with in exit passageway, this air bag is according to the space size in pump inner high voltage district, shape is designed, and it is fixedly mounted on corresponding position, when pressure raises, make air bag compression until pressure balance, when pump work produces pulsating pressure change, fully absorbed by air bag, make the pressure stability in pump, reduce vibrations and noise that pressure change produces, there is damping, noise elimination function.
But, above-mentioned this gear pump and existing most of gear pump, float-controlled valve structure is all by floater controlled valve core, being risen by liquid level in outlet plenum promotes ball float to open spool, discharge oil gas, only when oil gas is hoarded a certain amount of in outlet plenum, ball float could be promoted to open spool aerofluxus, air pressure is higher.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of oil gas to discharge at any time, keeps pump housing inner and outer air pressure stable, when liquid raises in the pump housing, be automatically switched off exhaust pipe, it is ensured that the gear pump that liquid will not be excessive.
For achieving the above object, this utility model provides following technical scheme: a kind of gear pump, including the pump housing and cover the pump cover on the pump housing, the exhaust pipe inside and outside the connection pump housing it is provided with on described pump cover, described exhaust pipe is positioned at one end of the pump housing and is cased with float trap rod member, it is provided through the air inlet of exhaust pipe sidewall on described exhaust pipe, when described float trap rod member moves up and down in exhaust pipe, makes exhaust pipe inside connect with air inlet and completely cut off.
nullBy using technique scheme，The state that exhaust pipe is held open，Oil gas in the pump housing can be entered in exhaust pipe by air inlet，Discharged outside the pump housing by exhaust pipe again，So that oil gas is not hoarded in the pump housing，The air pressure inside and outside the pump housing is made to keep steady statue，When liquid level in the pump housing rises，Float trap rod member slowly rises in exhaust pipe，By air inlet blocking slowly，When air inlet is blocked completely，Oil gas is the most almost discharged，Now，Exhaust pipe is internal and air inlet is isolated opens，Liquid medium outwards cannot overflow from exhaust pipe，Can only be re-entered into by overflow valve in the oil inlet passage of the pump housing，This utility model gear pump，In the case of liquid level is relatively low，Oil gas in the pump housing can discharge at any time in exhaust pipe，Will not hoard in the pump housing，Make pump housing inner and outer air pressure stable，When liquid level rises，Valve rod can rise，Air inlet is blocked，Make liquid will not overflow from exhaust pipe，Liquid is played preferable leakproof effect.
Further, described float trap rod member includes that spool, the float being vertically set in exhaust pipe, described spool lower end are detachably fixed with float and are connected.
By using technique scheme, spool is detachably fixed with float and is connected, can be disassembled from spool by float, replaces with the float of differing heights, with the degassing function of exhaust pipe under the conditions of the different liquid level of realization.
Further, described air inlet extends formation along the length direction of exhaust pipe.
By using technique scheme, air inlet facilitates oil gas to enter in exhaust pipe, and air inlet extends, while making spool move up along the length direction of exhaust pipe, oil gas remaining in the pump housing can also be discharged by air inlet, reaches preferable exhaust effect.
Further, one end that described exhaust pipe is positioned at outside the pump housing is provided with angle coupling.
By using technique scheme, exhaust pipe arranges angle coupling, prevent dust or foreign body from falling to entering in exhaust pipe, improve the cleannes in the pump housing.
Further, described angle coupling is positioned on the outer wall of knee and is provided with intensive aspect.
By using technique scheme, intensive aspect, for strengthening the structural strength of angle coupling, makes this angle coupling be not likely to produce the situation of breakage in disassembly process, improves the service life of angle coupling.
Further, described exhaust pipe is threadeded with pump cover.
By using technique scheme, threaded mode ratio is stronger, stable, it is achieved exhaust pipe is dismantled and assembled with pump cover, facilitates staff that exhaust pipe dismounting is keeped in repair and changed.
Further, described spool being provided through the spacing rod member of spool sidewall, the two ends of described spacing rod member are upper and lower sliding in air inlet.
By using technique scheme, when spool moves up and down, drive the upper and lower sliding on air inlet of spacing rod member, the sidewall of spacing rod member and two medial wall laminatings of air inlet, make spool stability during oscilaltion more preferable.
Further, described exhaust pipe is provided with and the limiting section of pump cover outer surface laminating.
By using technique scheme, limiting section limits the length that is installed in the pump housing of exhaust pipe, make exhaust pipe the most precisely, put in place, also make the float height in the pump housing moderate.
In sum, this utility model has the advantages that
1, in the case of liquid level is relatively low, oil gas in the pump housing can discharge at any time in exhaust pipe, will not hoard in the pump housing, make pump housing inner and outer air pressure stable, when liquid level rises, valve rod can rise, and is blocked by air inlet, make liquid will not overflow from exhaust pipe, liquid is played preferable leakproof effect；
2, air inlet extends formation along the length direction of exhaust pipe, and while making spool move up, oil gas remaining in the pump housing can also be continued to discharge by air inlet, reaches preferable exhaust effect；
3, angle coupling is set on exhaust pipe, prevents dust or foreign body from falling to entering in exhaust pipe, improve the cleannes in the pump housing；
4, exhaust pipe is threadeded with pump cover, facilitates staff that exhaust pipe dismounting is keeped in repair and changed；
5, limiting section limits the length that is installed in the pump housing of exhaust pipe, make exhaust pipe the most precisely, put in place, also make the float height in the pump housing moderate.
Accompanying drawing explanation
Fig. 1 is the structural representation one of gear pump；
Fig. 2 is the structural representation two of gear pump；
Fig. 3 is A portion enlarged diagram in Fig. 2.
In figure: 1, the pump housing；2, exhaust pipe；201, limiting section；202, air inlet；3, angle coupling；4, intensive aspect；5, pump cover；6, spool；7, float；701, protruding；8, spacing rod member.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described.
nullEmbodiment one: a kind of gear pump，Referring to figs. 1 through 3，Including the pump housing 1 and the pump cover 5 covered on the pump housing 1，Exhaust pipe 2 it is provided with on pump cover 5，The installing hole vertically running through pump cover 5 upper and lower surface it is provided with on pump cover 5，By installing hole, exhaust pipe 2 is installed on pump cover 5，Exhaust pipe 2 makes the inside and outside connection of the pump housing 1，Exhaust pipe 2 is positioned on one end sidewall of the pump housing 1 level that is provided with and runs through the air inlet 202 of its sidewall，Air inlet 202 extends formation in the length of exhaust pipe 2，Exhaust pipe 2 is constantly in the state opened，Oil gas in the pump housing 1 can be entered in exhaust pipe 2 by air inlet 202，Discharged outside the pump housing 1 by exhaust pipe 2 again，So that oil gas is not hoarded in the pump housing 1，The air pressure inside and outside the pump housing 1 is made to keep steady statue，Float trap rod member it is arranged with in exhaust pipe 2，Float trap rod member is positioned at one end of the pump housing 1，Float trap rod member can swim on liquid level，Rising along with the medium liquid level in the pump housing 1，Effect at liquid surface-floated，Float trap rod member moves up in exhaust pipe 2，Float trap rod member includes vertically being set in the spool 6 within exhaust pipe 2 and float 7，The lower end of spool 6 is detachably fixed with float 7 and is connected，In this utility model，Float 7 is made for elastic plastic material，Float 7 be provided centrally with running through the through hole of float 7 upper and lower end face，By through hole, float 7 is set on spool 6，Two projections 701 it are provided with on spool 6，Upper and lower end face with float 7 abuts respectively，By protruding 701, float 7 is fixed on spool 6，When needing to change float 7，Owing to float 7 is made for elastoplast，Pull downward on float 7，When through hole contacts with protruding 701，Outwards elastic deformation，Thus float 7 is disassembled from spool 6，It is convenient for changing new float 7，Float trap rod member moves up in exhaust pipe 2，When i.e. spool 6 rises in exhaust pipe 2，By air inlet 202 blocking slowly，Oil gas enters in exhaust pipe 2 from air inlet 202 and discharges，When air inlet 202 is blocked completely，Oil gas is the most almost discharged，Now，Exhaust pipe 2 is internal and air inlet 202 is isolated opens，Liquid medium outwards cannot overflow from exhaust pipe 2，Can only be re-entered into by overflow valve in the oil inlet passage of the pump housing 1，This utility model gear pump，In the case of liquid level is relatively low，Oil gas in the pump housing 1 can discharge at any time in exhaust pipe 2，Will not hoard in the pump housing 1，Make the pump housing 1 inner and outer air pressure stable，When liquid level rises，Valve rod can rise，Air inlet 202 is blocked，Make liquid will not overflow from exhaust pipe 2，Liquid is played preferable leakproof effect.
With reference to Fig. 2, one end that exhaust pipe 2 is positioned at outside the pump housing 1 is provided with angle coupling 3, one end of angle coupling 3 is fixing with the upper end of exhaust pipe 2 to be connected, owing to exhaust pipe 2 is vertically arranged on pump cover 5, dust or foreign body outside the pump housing 1 easily enter in the pump housing 1 from the endoporus of exhaust pipe 2, and in causing the pump housing 1, liquid medium is contaminated, therefore, exhaust pipe 2 arranges angle coupling 3, prevents dust or foreign body from falling to entering in exhaust pipe 2, improve the cleannes in the pump housing 1.
With reference to Fig. 2, intensive aspect 4 it is provided with on the outer wall of angle coupling 3, in this utility model, intensive aspect 4 is reinforcement, reinforcement is fixed on the knee of angle coupling 3, strengthened the structural strength of this knee angle coupling 3 by reinforcement, make this angle coupling 3 not have the situation of breakage in disassembly process, improve the service life of angle coupling 3.
See figures.1.and.2, exhaust pipe 2 is threadeded with pump cover 5, it is provided with external screw thread on the lateral wall of exhaust pipe 2, it is provided with female thread on the inwall of installing hole, coordinated by internal and external threads, realize threadeding of exhaust pipe 2 and pump cover 5, thus realize the dismantled and assembled of exhaust pipe 2 and pump cover 5, facilitate staff that exhaust pipe 2 dismounting is keeped in repair and changed.
With reference to Fig. 2, spacing rod member 8 it is provided with on spool 6, spacing rod member 8 level runs through spool 6 sidewall, and two ends upper and lower sliding in air inlet 202, the two ends of spacing rod member 8 are carried on a shoulder pole on air inlet 202, so that spool 6 and float 7 are fixed on exhaust pipe 2, when spool 6 moves up and down, drive the upper and lower sliding on air inlet 202 of spacing rod member 8, the sidewall of spacing rod member 8 and two medial wall laminatings of air inlet 202, make spool 6 stability during oscilaltion more preferable.
See figures.1.and.2, limiting section 201 it is provided with on exhaust pipe 2, limiting section 201 is positioned on the outer circle wall of exhaust pipe 2, the outer surface laminating of the lower surface of limiting section 201 and pump cover 5, due to exhaust pipe 2 with pump cover 5 for threadeding, exhaust pipe 2 are installed when, easily exhaust pipe 2 is turned the length in the pump housing 1 long or too short, therefore, limiting section 201 limits the length that exhaust pipe 2 is installed in the pump housing 1, swivel stack body 2, when the lower surface of limiting section 201 is fitted with the outer surface of the pump housing 1, then exhaust pipe 2 is installed and is put in place, need not swivel stack body 2 again, make exhaust pipe 2 the most accurate, put in place, also make the float 7 in the pump housing 1 the most moderate.
Embodiment two: a kind of gear pump, it is with embodiment one difference: on the basis of embodiment one, sheathed sealing ring on exhaust pipe 2, sealing ring is between limiting section 201 and the pump housing 1 upper surface, for sealing up the gap between limiting section 201 and pump cover 5, prevent the oil in the pump housing 1 from outwards spilling from the gap between limiting section 201 and pump cover 5, play preferable sealing function.
Embodiment three: a kind of gear pump, it is with embodiment one difference: on the basis of embodiment one, two ends ball at spacing rod member 8 connects two spin, the both sides inwall of air inlet 202 is provided with the groove that match concavo-convex with spin, groove extends along the length direction of air inlet 202, and spin is positioned at groove, spacing rod member 8 is made preferably to be fixed on spool 6 by spin, it is difficult to separate from spool 6, play preferable fixation, simultaneously, spin is spheroid, the frictional force being subject to during with air inlet 202 contact internal walls is less, facilitate the upper and lower sliding in air inlet 202 of spacing rod member 8, ensure the smooth degree of its sliding.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. a gear pump, including the pump housing (1) and the pump cover (5) that covers on the pump housing (1), it is characterized in that: on described pump cover (5), be provided with the exhaust pipe (2) inside and outside the connection pump housing (1), described exhaust pipe (2) is positioned at one end of the pump housing (1) and is cased with float trap rod member, the air inlet (202) of exhaust pipe (2) sidewall it is provided through on described exhaust pipe (2), when described float trap rod member moves up and down in exhaust pipe (2), exhaust pipe (2) inside is made to connect with air inlet (202) and completely cut off.
Gear pump the most according to claim 1, it is characterized in that: described float trap rod member includes spool (6), the float (7) being vertically set in exhaust pipe (2), described spool (6) lower end is detachably fixed with float (7) and is connected.
Gear pump the most according to claim 2, it is characterised in that: described air inlet (202) extends formation along the length direction of exhaust pipe (2).
Gear pump the most according to claim 3, it is characterised in that: described exhaust pipe (2) is positioned at the pump housing (1) one end outward and is provided with angle coupling (3).
Gear pump the most according to claim 4, it is characterised in that: described angle coupling (3) is positioned on the outer wall of knee and is provided with intensive aspect (4).
Gear pump the most according to claim 5, it is characterised in that: described exhaust pipe (2) is threadeded with pump cover (5).
Gear pump the most according to claim 3, it is characterized in that: be provided through the spacing rod member (8) of spool (6) sidewall on described spool (6), the two ends of described spacing rod member (8) are upper and lower sliding in air inlet (202).
Gear pump the most according to claim 6, it is characterised in that: it is provided with on described exhaust pipe (2) and the limiting section (201) of pump cover (5) outer surface laminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620212581.XU CN205423154U (en) | 2016-03-21 | 2016-03-21 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620212581.XU CN205423154U (en) | 2016-03-21 | 2016-03-21 | Gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423154U true CN205423154U (en) | 2016-08-03 |
Family
ID=56520509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620212581.XU Expired - Fee Related CN205423154U (en) | 2016-03-21 | 2016-03-21 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869511A (en) * | 2019-03-25 | 2019-06-11 | 浙江德宏汽车电子电器股份有限公司 | A kind of vacuum pump exhaust tube structure |
-
2016
- 2016-03-21 CN CN201620212581.XU patent/CN205423154U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869511A (en) * | 2019-03-25 | 2019-06-11 | 浙江德宏汽车电子电器股份有限公司 | A kind of vacuum pump exhaust tube structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20210321 |