CN207813918U - Gear pump and closestool with the gear pump - Google Patents
Gear pump and closestool with the gear pump Download PDFInfo
- Publication number
- CN207813918U CN207813918U CN201820201193.0U CN201820201193U CN207813918U CN 207813918 U CN207813918 U CN 207813918U CN 201820201193 U CN201820201193 U CN 201820201193U CN 207813918 U CN207813918 U CN 207813918U
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- China
- Prior art keywords
- gear
- pump
- gear pump
- reduction gearing
- shell
- Prior art date
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- 230000009467 reduction Effects 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004519 grease Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 208000032369 Primary transmission Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model is related to gear pump and the closestool with the gear pump.The gear pump active gear wheel (5) and reduction gearing (6), the reduction gearing (6) are internal gear, and form internal messing with driving gear (5).
Description
Technical field
The utility model is related to gear pump and the closestool with the gear pump.
Background technology
Gear pump is for conveying liquid and/or being allowed to the pump installation being pressurized.Gear pump generally includes shell, with direct current
Power source for machine and the pump gear for conveying liquid.In order to make gear pump still be able to protect in higher outlet pressure
The stabilization of flow is held, gear pump is often additionally provided with deceleration device, is output to the rotating speed of pump gear to adjust direct current generator and carries
Torque of the height output to pump gear.The deceleration device of existing gear pump generally includes driving gear and reduction gearing, driving gear
Slowed down by way of the primary transmission of external toothing with reduction gearing.The flow control of pump is controlled by accurate reduction ratio
And it realizes.
Existing gear pump has the following defects：
On the one hand, driving gear and reduction gearing centre-to-centre spacing are larger, cause reduction gear box volume larger, and then cause whole
The volume of a gear pump is larger.
On the other hand, in order to reduce the size as far as possible, driving gear and reduction gearing would generally be placed as deviateing and slow down
The centre position of gear-box.Since the bias of driving gear is placed, the direct current generator that driving gear is connected can be caused to deviate whole
The centre position of a gear pump which results in the larger installation space of gear pump and influences beauty.
In addition, existing gear pump is generally driven using direct current generator.The rotating speed of direct current generator is higher, and turns in height
When fast, due to higher centrifugal force, the grease being coated on gear can be thrown off gear, get rid of on the tank wall of reduction gear box.I.e.
It using the very high grease of viscosity, at most can only also make moderate progress in very limited degree, and can not still avoid getting rid of for grease
From.In addition, in some cases, such as in order to achieve the effect that noise reduction, it is not much the other selection space of grease type substantially.Such as
Fruit does not have the presence of grease, then easily leads to gear wear, and reducing transmission efficiency influences overall performance, or noise is caused to increase shadow
It rings and uses.
Utility model content
This programme is directed to problems as mentioned above and demand, proposes a kind of novel gear pump, as follows due to taking
Various features described in text and overcome the above-mentioned problems in the prior art, and other technologies advantage can be brought.
The utility model proposes a kind of gear pumps, including：
Driving gear；
Reduction gearing, the reduction gearing are internal gear, and form internal messing with driving gear.
Optionally, the gear pump further includes motor, and the driving gear is fixed to the motor by interference fit
Motor shaft.
Optionally, the motor center line of the motor is located at the approximately mid way between of gear pump.
Optionally, the gear pump further includes holding plate, and the holding plate is provided with the reduction gear shaft by reduction gearing
The through-hole passed through.
Optionally, it is provided with shaft seal between the through-hole and the reduction gear shaft.
Optionally, it is provided with gasket between the reduction gearing and the shaft seal.
Optionally, the material of the gasket is graphite nylon.
Optionally, the gear pump further includes the first pump for engaging the reduction gear shaft of reduction gearing and synchronizing rotation
Gear.
Optionally, the gear pump further includes the second pump gear with the first pump gear external toothing.
Optionally, the gear pump further includes first shell and second shell, and wherein holding plate is fixed on first shell
Between second shell, to form the reduction gearing for accommodating driving gear and reduction gearing between first shell and holding plate
Chamber forms pump chamber between holding plate and second shell.
Optionally, the gear pump is provided at least one beam.
The utility model also proposes a kind of closestool, is provided with foregoing gear pump.
More description in detail is carried out to the optimum embodiment for implementing the utility model below in conjunction with attached drawing, to hold
It changes places and understands the feature and advantage of the utility model.
Description of the drawings
It, hereinafter will be to the utility model embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing simply introduced.Wherein, attached drawing is used only for displaying some embodiments of the utility model, rather than this practicality is new
The whole embodiments limited to this of type.
Fig. 1 is the decomposition view according to the gear pump of preferred embodiment；
Fig. 2A is according to the sectional view of the gear pump of preferred embodiment, and Fig. 2 B are according to the outer of the gear pump of preferred embodiment
Portion's view；
Fig. 3 A and Fig. 3 B contrastively illustrate the sectional view of internal messing scheme used by the utility model and existing
The sectional view of external toothing scheme；
Fig. 4 A and Fig. 4 B contrastively illustrate the sectional view of the gear pump using internal messing scheme, and using existing outer
The sectional view of the gear pump of meshing schemes；
Fig. 5 A and Fig. 5 B contrastively illustrate the external view of the gear pump using internal messing scheme, and using existing
The external view of the gear pump of external toothing scheme；
Fig. 6 A are according to the sectional view of the gear pump of preferred embodiment, and Fig. 6 B are the enlarged views of part A in Fig. 6 A.
Specific implementation mode
In order to enable the purpose, technical scheme and advantage of the technical solution of the utility model are clearer, it hereinafter will knot
The attached drawing for closing the utility model specific embodiment, is clearly and completely described the technical solution of the utility model embodiment.
Identical reference numeral represents identical component in attached drawing.It should be noted that described embodiment is the utility model
A part of the embodiment, instead of all the embodiments.Based on described the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of without creative work belongs to the model of the utility model protection
It encloses.
Referring to Fig. 1,2A and 2B, wherein Fig. 1 illustrates the decomposition view of the gear pump according to preferred embodiment, Tu2AZhan
Show that the sectional view of the gear pump, Fig. 2 B then illustrate the external view of the gear pump.As shown, gear pump includes mainly
Motor 1, first shell 3 and second shell 16, beam 4a, 4b, driving gear 5, the reduction gearing 6 with reduction gear shaft 7,
Gasket 8, shaft seal 9, holding plate 10, the first pump gear 11, the second pump gear 12, the first pump tooth wheel shaft 13, the second pump gear
The components such as axis 14, O-shaped sealing element 15.
According to preferred embodiment, the driving gear 5 is fixed to the motor shaft of the motor 1 by interference fit, to
When motor shaft rotates, directly driving gear 5 is driven to rotate.
According to preferred embodiment, reduction gear shaft 7 is fixed to reduction gearing 6, or is integral therewith.Preferably, reducing gear
Wheel shaft 7 is molded into together by way of insert injection moulding with reduction gearing 6.
According to preferred embodiment, first shell 3 and second shell 16 are at least partially formed the external shell of gear pump.It is excellent
Selection of land, the vibration in order to reduce gear pump to the greatest extent are transmitted to outside, and the external shell of gear pump is provided at least one beam.
Beam is preferably provided in the mounting hole of shell.It is highly preferred that referring to Fig. 1, two beams 4a, 4b are separately positioned on
In the mounting hole of 3 both sides of first shell.
According to preferred embodiment, motor 1 can be fixed to first shell 3 by one or more fasteners 2, and motor shaft is worn
It crosses the hole of first shell 3 and extends in the shell of gear pump.
According to preferred embodiment, holding plate 10 is between first shell 3 and second shell 16.Wherein, first shell 3,
Holding plate 10, second shell 16 are fixed together, such as pass through several fasteners 17.First shell 3 and the formation of holding plate 10
The reduction gearing chamber for accommodating driving gear 5 and reduction gearing 6, pump chamber is formed between holding plate 10 and second shell 16.That is, protecting
Plate 10 is held to separate reduction gearing chamber and pump chamber.The pump chamber accommodates pump gear and needs pumped liquid.
According to preferred embodiment, the first pump tooth wheel shaft 13 and the second pump tooth wheel shaft 14 are fixed to second shell 16, and respectively
The first pump gear 11 for keeping being engaged with each other and the second pump gear 12.
According to preferred embodiment, the holding plate 10 is provided with several holding structure portions, to keep reduction gearing 6,
One pump gear 11 and the second pump gear 12.Wherein, holding plate 10, which is additionally provided with, is passed through by the reduction gear shaft 7 of reduction gearing 6
Through-hole 18, that is, reduction gear shaft 7 passes through holding plate 10 and drives 11 synchronous rotary of the first pump gear.
When motor 1 operates, motor shaft directly drives driving gear 5 to be rotated.Due to driving gear 5 and reducing gear
The internal messing relationship of wheel 6, driving gear 5 drives reduction gearing 6 to be rotated, to realize gear reduction.With reduction gearing 6
Rotation, reduction gear shaft 7 rotate with.By reduction gear shaft 7, the power from reduction gearing 6 is passed to the first pump tooth
Wheel 11, this can for example be realized by means of the flat position in shaft end of reduction gear shaft 7 and the cooperation in the D-shaped hole of the first pump gear 11.
Under the drive of first pump gear 11, it is driven to rotate with the second pump gear 12 of its external toothing.First pump gear 11 and second pumps
Gear 12 is for transferring liquid.The liquid is such as, but not limited to be water.
Preferably, referring to Fig. 1 and Fig. 3 A, the reduction gearing 6 of gear pump is internal gear, and forms interior nibble with driving gear 5
It closes.Driving gear 5 and reduction gearing 6 preferably use involute spur gear, but alternatively it is also possible to oblique using involute
Tooth roller gear.The number of teeth of reduction gearing 6 is more than driving gear 5, slows down to realize.By the way that driving gear 5 is arranged and slows down
Number of teeth relationship between gear 6 is reduced with the rotating speed needed for realizing and torque improves, it can be achieved that different reduction ratio.
Existing gear pump is all made of the arrangement of 6 external toothing of driving gear 5 and reduction gearing, i.e., as shown in Figure 3B that
Sample.It is arranged compared to external toothing, the driving gear 5 in deceleration device is arranged to Inside gear drive with reduction gearing 6 and is brought
A variety of advantages.
First, gear grease is not easy to be thrown off gear.
Driving gear 5 is placed in reduction gearing 6 in gear-box, in order to reduce friction, it will usually be smeared on gear
Lubricating oil or lubricating fat.Since 1 rotating speed of direct current generator is higher (such as nominal load rotating speed can be 7000rpm or so), in centrifugal force
Under the action of, grease is easily thrown off gear.Under the construction of 6 internal messing of driving gear 5 and reduction gearing, even if driving gear 5
On grease thrown away, can also be thrown in reduction gearing 6, when engaging next time, grease can be brought into region of engagement again
Domain, continuation can play lubrication and/or noise reduction.
Second, driving gear and the drive centre distancc of reduction gearing are small in internal messing scheme, occupy little space.
Specifically, two gear external toothings and centre-to-centre spacing formula difference is as follows when internal messing：
Wherein α ' is the angle of engagement, Wherein α ' for
The angle of engagement,
Wherein, aOutsideThe centre-to-centre spacing of driving gear and reduction gearing, a when referring to external toothingIt is interiorWhen being internal messing driving gear and
The centre-to-centre spacing of reduction gearing, m refer to module, and z1 refers to the driving gear number of teeth, and x1 refers to driving gear modification coefficient, and z2 is
Refer to the reduction gearing number of teeth, x2 refers to reduction gearing modification coefficient, and α is pressure angle, usually takes 20 °, inv is infolute function.
In an illustrative manner, driving gear parameter m=0.5, z1=9, x1=0.48 are chosen, reduction gearing parameter m is chosen
=0.5, x2=-0.4 when z2=35, external toothing, x2=0.4 when internal messing, then centre-to-centre spacing difference is as follows：
aOutside=11.02
aIt is interior=6.46
As it can be seen that being driven compared to external gear pump, when using internal messing, driving gear 5 and the centre-to-centre spacing of reduction gearing 6 are aobvious
It writes and reduces, reduction amount reaches 40% or more.Since driving gear 5 and reduction gearing 6 are all disposed in reduction gear box, centre-to-centre spacing
Reduction the size of reduction gear box and complete machine is substantially reduced.
Preferably so that the motor center line of motor 1 is located at the approximately mid way between of gear pump, so that gear pump complete machine
In symmetrical structure, consequently facilitating installation and utilization.For the existing scheme using external toothing, then this point is cannot achieve.
It can be seen that from the comparison of Fig. 4 A and 4B according to external toothing scheme, then the position of motor center line is from the position of complete machine center line
Set apparent offset, it is difficult to so that motor 1 is located at gear pump centre position.And by using the scheme of Inside gear drive, it can be achieved that
Motor center line and complete machine center line are almost in same position, to which motor 1 can be placed at approximately mid way between.In addition, ginseng
See Fig. 5 A and 5B, it can be seen that in the scheme using internal messing, gear pump appearance is more symmetrical and reasonable.
In order to ensure the seal of pump chamber, O-ring seals 15 are provided between second shell 16 and holding plate 10.This
Outside, referring to Fig. 6 A and 6B, shaft seal 9 is provided between the through-hole 18 and the reduction gear shaft 7 of holding plate 10.
Preferably, gasket 8 is set between the reduction gearing 6 and the shaft seal 9.It is highly preferred that the gasket 8
Material be graphite nylon.But the material of gasket is without being limited thereto, and the other materials with high abrasion, high lubricating property also can be selected
Gasket.Gasket 8 is set in the position, is solved in a manner of simple and effective and is lower-cost existing in the prior art several
Problem.For example, in existing gear pump, in order to avoid being in contact collision between reduction gearing and shaft seal, one kind is common
Scheme is to be separated therebetween with plastic part, and another scheme is then that there are gaps between axle envelope and reduction gearing.But with
Upper two schemes, the first needs out injection mold, mold to need of high cost, and during gear engages, slows down
Play inevitably occurs up and down for gear, it is possible to can generate noise with plastic part contact-impact.Second in axle envelope and reduction gearing
Between there are gap, cause gear pump space waste, size to increase.The utility model by the reduction gearing 6 with it is described
Gasket 8 is set between shaft seal 9, dexterously avoids shaft seal 9 and collides, rubs with reduction gearing 6, avoid
The above problem of the existing technology.
Proposed gear pump is suitable for the device of the progress liquid conveying by taking closestool as an example, and but it is not limited to this.
Unless otherwise defined, the technical term or scientific term used herein is should be in the utility model fields
The ordinary meaning that personage with general technical ability is understood.Make in the utility model patent application specification and claims
" first ", " second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish
Different component parts.Equally, the similar word such as "one" or " one " also not necessarily indicates quantity limitation." comprising " or
The similar word such as "comprising" mean to occur element or object before the word cover the element for appearing in the word presented hereinafter or
Person's object and its equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is simultaneously non-limiting
In physics or mechanical connection, but may include electrical connection, either directly or indirectly."upper",
"lower", "left", "right" etc. are only used for indicating relative position relation, and after the absolute position for being described object changes, then this is opposite
Position relationship may also correspondingly change.
The exemplary implementation side for the water pump that the utility model is proposed is described in detail above in reference to preferred embodiment
Formula, however it will be appreciated by those skilled in the art that under the premise of without departing substantially from the utility model theory, it can be to above-mentioned specific
Embodiment makes a variety of modifications and remodeling, and can to the utility model proposes various technical characteristics, structure carry out a variety of groups
It closes, and without departing from the scope of protection of the utility model, the scope of protection of the utility model is determined by the attached claims.
Reference numerals list
1 motor
2 fasteners
3 first shells
4a, 4b beam
5 driving gears
6 reduction gearing
7 reduction gear shafts
8 gaskets
9 shaft seals
10 holding plates
11 first pump gears
12 second pump gears
13 first pump tooth wheel shafts
14 second pump tooth wheel shafts
15 O-shaped sealing elements
16 second shells
17 fasteners
18 through-holes
Claims (12)
1. a kind of gear pump, which is characterized in that including：
Driving gear (5)；
Reduction gearing (6), the reduction gearing (6) are internal gear, and form internal messing with driving gear (5).
2. gear pump as described in claim 1, which is characterized in that the gear pump further includes motor (1), the driving gear
(5) pass through motor shaft of the interference fit fixed to the motor (1).
3. gear pump as claimed in claim 2, which is characterized in that the motor center line of the motor (1) is located at gear pump
Approximately mid way between.
4. gear pump as described in claim 1, which is characterized in that the gear pump further includes holding plate (10), the holding
Plate (10) is provided with the through-hole (18) passed through by the reduction gear shaft (7) of reduction gearing (6).
5. gear pump as claimed in claim 4, which is characterized in that the through-hole (18) and the reduction gear shaft (7) it
Between be provided with shaft seal (9).
6. gear pump as claimed in claim 5, which is characterized in that the reduction gearing (6) and the shaft seal (9) it
Between be provided with gasket (8).
7. gear pump as claimed in claim 6, which is characterized in that the material of the gasket (8) is graphite nylon.
8. gear pump as described in claim 1, which is characterized in that the gear pump further includes engaging subtracting for reduction gearing (6)
Fast gear shaft (7) and the first pump gear (11) for synchronizing rotation.
9. gear pump as claimed in claim 8, which is characterized in that the gear pump further includes and first pump gear (11)
The second pump gear (12) of external toothing.
10. gear pump as claimed in claim 4, which is characterized in that the gear pump further includes first shell (3) and second shell
Body (16), and wherein holding plate (10) is fixed between first shell (3) and second shell (16), with first shell (3) with
The reduction gearing chamber for accommodating driving gear (5) and reduction gearing (6) is formed between holding plate (10), in holding plate (10) and second
Shell forms pump chamber between (16).
11. gear pump as claimed in claim 10, which is characterized in that the gear pump is provided at least one beam (4).
12. a kind of closestool is provided with gear pump as described in any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201193.0U CN207813918U (en) | 2018-02-05 | 2018-02-05 | Gear pump and closestool with the gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201193.0U CN207813918U (en) | 2018-02-05 | 2018-02-05 | Gear pump and closestool with the gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207813918U true CN207813918U (en) | 2018-09-04 |
Family
ID=63320583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820201193.0U Active CN207813918U (en) | 2018-02-05 | 2018-02-05 | Gear pump and closestool with the gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207813918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360097A (en) * | 2019-08-31 | 2019-10-22 | 段井胜 | A kind of gear pump |
-
2018
- 2018-02-05 CN CN201820201193.0U patent/CN207813918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360097A (en) * | 2019-08-31 | 2019-10-22 | 段井胜 | A kind of gear pump |
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| GR01 | Patent grant |