CN206957917U - Gear pump - Google Patents

Gear pump Download PDF

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Publication number
CN206957917U
CN206957917U CN201720489384.7U CN201720489384U CN206957917U CN 206957917 U CN206957917 U CN 206957917U CN 201720489384 U CN201720489384 U CN 201720489384U CN 206957917 U CN206957917 U CN 206957917U
Authority
CN
China
Prior art keywords
gear
drive gear
shell
drive
driven
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.)
Active
Application number
CN201720489384.7U
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Chinese (zh)
Inventor
俞炳根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Yingweigao Co ltd
Original Assignee
Doosan Infracore Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Doosan Infracore Co Ltd filed Critical Doosan Infracore Co Ltd
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Publication of CN206957917U publication Critical patent/CN206957917U/en
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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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • 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

Abstract

The utility model discloses a kind of gear pump.Included according to the gear pump of the embodiment of the utility model one：Shell, it is formed with suction inlet and outlet；Drive gear, it can be rotatably provided in the shell centered on drive shaft；And driven gear, it is meshed with the drive gear and can be rotatably provided in by the rotation of the drive gear centered on driven shaft in the shell, the angle that the gear pump is configured between first straight line and second straight line is 5 degree to 30 degree, the track and the suction inlet that the first straight line is drawn with the end of drive gear and the gear teeth at least one in the driven gear described in rotary course of the drive gear with the driven gear simultaneously are tangent, the second straight line is by the point of the first straight line and the intersection of locus and tangent with the inwall of the shell.

Description

Gear pump
Technical field
It the utility model is related to the gear pump of drawing fluid.
Background technology
Gear pump is provided with drive gear and driven gear with being meshed on the inside of its shell.Fluid is provided to shell Side, with driving gear drives driven gear, the two is meshed and rotated, drawing fluid, makes its opposite side to shell Flowing.That is, gear pump be formed as the pump gear that the drive gear by being meshed and driven gear are formed being placed in it is tangent with it Shell in, rotary drive gear and driven gear, to enable flow through between the inwall of the groove and shell that are formed at the gear teeth The structure of spatial flow.
However, pressure fluctuation occurs during gear pump drawing fluid.Pulsation means that the pressure of the fluid by gear pump discharge becomes Change, the fluctuation intensity occurred during the pumping of gear pump is bigger, it is more obvious the problem of be to receive by gear pump supply Internal impact and vibrations occur in the device of fluid, so as to which the durability of the device to receiving provided fluid produces secondary make With, and can produce noise during the pumping of gear pump.
Utility model content
To solve above-mentioned prior art problem, the purpose of this utility model is to provide a kind of gear that can reduce pulsation Pump.
To solve above-mentioned problem, embodiment of the present utility model can provide a kind of gear pump, including：Shell, it is formed There are suction inlet and outlet；Drive gear, it can be rotatably provided in the shell centered on drive shaft；It is and driven Gear, it is meshed with the drive gear and can rotatably set centered on driven shaft by the rotation of the drive gear In in the shell, the angle that the gear pump is configured between first straight line and second straight line is 5 degree to 30 degree, and this is first straight Line simultaneously with the drive gear described in the rotary course of the drive gear and the driven gear with the driven gear The track and the suction inlet that the end of at least one gear teeth is drawn are tangent, the second straight line by the first straight line with The point of the intersection of locus and tangent with the inwall of the shell.
Now, the angle can be 10 degree to 15 degree.
In addition, the drive gear can be 1.76 with the ratio of external diameter at least one in the driven gear and width To 2.10.
In addition, the drive gear can be with the ratio of external diameter at least one in the driven gear and width 1.91。
Effect of the present utility model is as follows.
According to an embodiment of the present utility model, by the way that angle initialization will be sucked in the range of 5 degree to 30 degree, have and subtract The effect that few pulsation occurs.
In addition, according to an embodiment of the present utility model, by will suction angle initialization in the range of 10 degree to 15 degree, With the effect for farthest reducing pulsation generation.
In addition, according to an embodiment of the present utility model, by the way that the ratio of the external diameter of gear and width is set in into 1.76 To in the range of 2.10, while there is reduction pulsation generation, the effect of pump efficiency is improved.
In addition, according to an embodiment of the present utility model, by the way that the ratio of the external diameter of gear and width is set as into 1.94, While with pulsation generation is farthest reduced, the effect of pump efficiency is farthest improved.
Brief description of the drawings
Fig. 1 is the figure of the internal structure of the overall gear pump for showing the embodiment of the utility model one.
Fig. 2 is the plan of the gear of the gear pump of the embodiment of the utility model one.
Fig. 3 is the side view of the gear of the gear pump of the embodiment of the utility model one.
Fig. 4 is the chart of the pulsation of the change with suction angle in the gear pump for show the embodiment of the utility model one.
Fig. 5 be in the gear pump for show the embodiment of the utility model one with gear external diameter and width ratio change Flow/torque and pulsation chart.
Symbol description
10- gear pumps, 20- shells, 22- suction inlets, 24- suctings, 26- discharge units, 28- outlets, 30- sliding tooths Wheel, 32- drive shafts, 40- driven gears, 42- driven shafts, the external diameter of D1- gears, the width of W1- gears, θ 1- suction angles.
Embodiment
Describe preferred embodiment of the present utility model in detail with reference to the accompanying drawings.First, it is notable that for each figure Inscape mark reference marks when, for identical inscape, even if it is indicated in other figs., also as far as possible use phase Same symbol.In addition, during the present embodiment is illustrated, when thinking illustrating on the contrary to related known composition or function When not knowing the order of the present embodiment, omit it and illustrate.
Fig. 1 is the figure of the internal structure of the overall gear pump for showing the embodiment of the utility model one.Fig. 2 is the utility model The plan of the gear of the gear pump of one embodiment, Fig. 3 are the side views of the gear of the gear pump of the embodiment of the utility model one.
As shown in figure 1, the gear pump 10 of the embodiment of the utility model one can include：Shell 20, suction inlet 22, outlet 28th, drive gear 30 and driven gear 40.
Shell 20 has a drive gear 30 and driven gear 40 in its inner containment, and provide can drawing fluid space.Outside The side of shell 20 is formed with the suction inlet 22 flowed into for fluid by outside inside shell 20.The opposite side of shell 20, i.e., across drive Moving gear 30 and driven gear 40 are forming the opposite side of the side of suction inlet 22 formed with being pumped to discharge outside shell 20 The outlet 28 of fluid.In the present embodiment, fluid can be along the level-crossing with being provided with drive gear 30 and driven gear 40 Direction flow into shell 20 inside, the fluid pumped can be with being provided with the plane of drive gear 30 and driven gear 40 abreast Discharge.According to demand, fluid can flow into shell along the vertical direction of the plane with being equipped with drive gear 30 and driven gear 40 Inside 20.Can possess between suction inlet 22 and drive gear 30 and driven gear 40 as flowing into the stream inside shell 20 Body flows the sucting 24 in the region flowed through during to drive gear 30 and the flowing of the side of driven gear 40 and as by drive gear 30 The discharge unit 26 in the region flowed through before being discharged with the fluid that driven gear 40 is pumped by outlet 28.
Drive gear 30 or driven gear 40 centered on drive shaft 32 and driven shaft 42 respectively can rotatably be set Inside shell 20.Drive gear 30 is configured to while drawing fluid, and revolving force is provided for driven gear 40.Drive gear 30 can be that pivot is arranged inside shell 20 with drive shaft 32.Driven gear 40 is configured to by the rotation of drive gear 30 Driving rotation, with drawing fluid.Driven gear 40 can be configured inside shell 20 with being meshed with drive gear 30, and be passed through The rotation of drive gear 30 is rotated with driven shaft 42 for pivot.
When drive gear 30 is rotated by driver element, the driven gear 40 that is meshed with drive gear 30 to driving The opposite direction of gear 30 is rotated, and work is pumped so as to play to pump the liquid flowed into by suction inlet 22 to the side of outlet 28 With.According in the gear pump 10 of the embodiment of the utility model one, the counterclockwise rotates of drive gear 30, the up time of driven gear 40 Pin direction rotates, so as to which fluid is pumped to the side of discharge unit 26 by the side of sucting 24.Be explained, drive gear 30 and from The direction of rotation of moving gear 40 can be according to the configuration of the position of sucting 24 and discharge unit 26, drive gear 30 and driven gear 40 It is different.
For example, the structure snd size of drive gear 30 and driven gear 40 can be with identical.That is, drive gear 30 and driven External diameter, width, the tooth number of gear 40 can be with identical.
Or the structure snd size of drive gear 30 and driven gear 40 can also be different.
The factor for the pulsation for influenceing to be occurred during the pumping of gear pump has in drive gear 30 and driven gear 40 extremely The outer diameter D 1 of one, width W1, suction angle, θ 1 etc. less.Optimization can be passed through according to the gear pump 10 of the embodiment of the utility model one These factors reduce pulsation phenomenon.
First, suction angle, θ 1 is introduced on influence caused by pulsation.Reference picture 1, suction angle, θ 1 can be defined as below.Will be same When with the drive gear 30 that is rotated in the rotary course of drive gear 30 and driven gear 40 with driven gear 40 at least The tangent first straight line in track and suction inlet 22 that the end of the gear teeth of one is drawn is labeled as L1, by first straight line L1 with The point of the intersection of locus and L2 is labeled as with the tangent second straight line of the inwall 29 of shell 20, then first straight line L1 and second is straight Angle between line L2 can be defined as sucking angle, θ 1.For example, suction angle, θ 1 can be equally applicable to the side of drive gear 30 With the side of driven gear 40.
In common gear pump, suction angle, θ 1 is almost set as 0 degree.When suction angle, θ 1 is set as into 0 degree, stream Body can not smoothly flow at least one space between the inwall of shell 20 in drive gear 30 and driven gear 40, thus Increase the possibility pulsed.Conversely, when suction angle, θ 1 is more than suitable degree, pulsation performance is also possible to decline.
Fig. 4 is the figure for the pulsation for showing the change in the gear pump according to the embodiment of the utility model one with suction angle Table.Suppress pulsation when sucking angle, θ 1 and being 5 degree to 30 degree as shown in figure 4, can confirm that.Furthermore, it is possible to confirm It can farthest suppress pulsation when sucking angle, θ 1 and being 10 degree to 15 degree.So as to, for example, in the present embodiment, can So that the suction angle, θ 1 of drive gear 30 and the side of driven gear 40 is set as into 5 degree to 30 degree respectively, when setting it to 10 degree During to 15 degree, optimal pulsation performance can be played.
Next, outer diameter D 1 and width W1 at least one in explanation drive gear 30 and driven gear 40 produces to pulsation Influence.Performance condition according to required by gear pump, can be at least one outer in drive gear 30 and driven gear 40 Footpath D1 and width W1 implements numerous variations.However, by adjusting external diameter at least one in drive gear 30 and driven gear 40 D1 and width W1 ratio D1/W1, can substantially reduce pulsation.
Fig. 5 is shown in the gear pump according to the embodiment of the utility model one with the external diameter of gear and the ratio of width Flow/torque of change and the chart of pulsation.As shown in figure 5, when at least one outer in drive gear 30 and driven gear 40 When footpath D1 and width W1 ratio D1/W1 is more than 1.76 and less than 2.10, the flow height of units of torque, fluctuation pressure are low.It is single Position torque flow height means that the more flow of small torque generation, the efficiency high of this explanation gear pump can be used.Conversely, can be true Recognize single when outer diameter D 1 at least one in drive gear 30 and driven gear 40 and width W1 ratio D1/W1 are more than 2.10 Torque flow drastically declines, fluctuation pressure rises therewith for position.So as in the present embodiment, in drive gear 30 and driven gear 40 At least one outer diameter D 1 and width W1 ratio D1/W1 can be 1.76 to 2.10.As shown in figure 5, it can confirm that when driving Can be farthest when at least one outer diameter D 1 and width W1 ratio D1/W1 are 1.91 in gear 30 and driven gear 40 While reducing pulsation generation, pump efficiency is farthest improved.
Table 1 below is to being pressed according to the flow of drive gear 30 and the fluid of the sizes of driven gear 40, torque, pulsation The test result of the change of power.
【Table 1】
As seen from Table 1, it can confirm that the ratio D1/ when the outer diameter D 1 of drive gear 30 and driven gear 40 and width W1 Fluctuation pressure is low when W1 is less than 2.10, units of torque flow is high.Further, it can be seen that when suction angle, θ 1 is at 10 degree to 15 degree Between when fluctuation pressure it is low.
In this way, according to the gear pump 10 of the embodiment of the utility model one, by the way that suction angle, θ 1 is set as into 10 degree to 15 It is set as between degree, by outer diameter D 1 at least one in drive gear 30 and driven gear 40 and width W1 ratio D1/W1 1.76 to 2.10, while can farthest suppressing pulsation, improve pump efficiency.
Illustrate to being given for example only property of above description technological thought of the present utility model, the technology neck belonging to the utility model In general technical staff in domain can implement a variety of modifications, change in the range of substantive characteristics of the present utility model is not departed from And equivalent substitution.Thus, the present embodiment is used to illustrate technological thought of the present utility model, rather than limits of the present utility model Technological thought, thus technological thought of the present utility model is not limited to these embodiments.The scope of protection of the utility model Ying Youquan The scope of sharp claim explains that falling into should be interpreted as including in the utility model with all technological thoughts in its equivalency range Claims scope in.

Claims (4)

  1. A kind of 1. gear pump, it is characterised in that including：
    Shell, it is formed with suction inlet and outlet；
    Drive gear, it can be rotatably provided in the shell centered on drive shaft；And
    Driven gear, it is meshed with the drive gear and can revolved by the rotation of the drive gear centered on driven shaft It is arranged in the shell with turning,
    It is 5 degree to 30 degree that the gear pump, which is configured to angle between first straight line and second straight line, the first straight line and meanwhile with The drive gear described in rotary course of the drive gear with the driven gear with it is at least one in the driven gear The gear teeth the track drawn of end and the suction inlet it is tangent, the second straight line is by the first straight line and the track Intersecting point and tangent with the inwall of the shell.
  2. 2. gear pump according to claim 1, it is characterised in that
    It the angle ranging from 10 degree to 15 degree.
  3. 3. gear pump according to claim 1, it is characterised in that
    The drive gear is 1.76 to 2.10 with the ratio of external diameter at least one in the driven gear and width.
  4. 4. gear pump according to claim 3, it is characterised in that
    The drive gear is 1.91 with the ratio of external diameter at least one in the driven gear and width.
CN201720489384.7U 2016-05-11 2017-05-04 Gear pump Active CN206957917U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0057540 2016-05-11
KR1020160057540A KR102453608B1 (en) 2016-05-11 2016-05-11 A gear pump

Publications (1)

Publication Number Publication Date
CN206957917U true CN206957917U (en) 2018-02-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720489384.7U Active CN206957917U (en) 2016-05-11 2017-05-04 Gear pump

Country Status (2)

Country Link
KR (1) KR102453608B1 (en)
CN (1) CN206957917U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113348303B (en) * 2019-03-08 2023-02-21 株式会社岛津制作所 Helical gear pump or motor
KR102636507B1 (en) * 2022-10-04 2024-02-14 아륭기공(주) Helical gear pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9046101B2 (en) * 2013-04-11 2015-06-02 Caterpillar Inc. Gear pump having grooved mounting adapter

Also Published As

Publication number Publication date
KR102453608B1 (en) 2022-10-12
KR20170127211A (en) 2017-11-21

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Legal Events

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GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: Inchon, South Korea

Patentee after: Hyundai Yingweigao Co.,Ltd.

Address before: Inchon, South Korea

Patentee before: DOOSAN INFRACORE Co.,Ltd.

CP01 Change in the name or title of a patent holder