CN202360387U - Thrust plate structure of internal gear pump - Google Patents
Thrust plate structure of internal gear pump Download PDFInfo
- Publication number
- CN202360387U CN202360387U CN2011204402405U CN201120440240U CN202360387U CN 202360387 U CN202360387 U CN 202360387U CN 2011204402405 U CN2011204402405 U CN 2011204402405U CN 201120440240 U CN201120440240 U CN 201120440240U CN 202360387 U CN202360387 U CN 202360387U
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- thrust plate
- plate body
- plate structure
- gear pump
- pressure
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Abstract
The utility model relates to a thrust plate structure of an internal gear pump, which comprises a front thrust plate body and a rear thrust plate body. Thrust holes are arranged on the front thrust plate body and the rear thrust plate body, and a high-pressure buffer groove which is used for converting high pressure to low pressure is arranged on the rear thrust plate body. The thrust plate structure is simple, and due to the special-shaped closed groove arranged on the rear thrust plate body, the service life of the thrust plate structure is prolonged. Besides, a V-shaped triangular groove is arranged on the thrust plate structure, noise of the pump when the pump runs at high rotation speed and under high pressure is relieved, and a work environment is improved.
Description
Technical field
The utility model relates to a kind of gear pump technical field, relates in particular to a kind of front and back port plate structure of crescent gear pump.
Background technique
The front thrust plate of existing crescent gear pump has five assignment holes that vary in size, and five assignment holes that vary in size are also arranged on rear thrust plate, is used to reduce the flow area, lets highly pressurised liquid enter into the front and back support bottom of gear pump.And when the thrust plate flow, some zone need be transformed to low pressure by high pressure, and to the moment that low pressure transforms, high pressure liquid is known from experience a lot of sound of generation, causes noise at high pressure.
The flow face of present thrust plate generally all can not get fully lubricated under the situation of pocketed oil, makes thrust plate and pump shaft, internal gear dry friction and is burnt easily.
Summary of the invention
To above-mentioned deficiency of the prior art, the utility model aims to provide a kind of port plate structure of crescent gear pump.
The technological scheme of the utility model: a kind of port plate structure of crescent gear pump; Comprise forward and backward thrust plate body; On this forward and backward thrust plate body, be provided with assignment hole, on said rear thrust plate body, be provided with and be used for the high-pressure buffer groove that high pressure transforms to low pressure.
High pressure was on the side of the flow face of low pressure moment conversion or on the assignment hole when said high-pressure buffer groove one end was located at operation.
Said high pressure oil dashpot is a V-shaped groove.
The sectional shape of said V-shaped groove is a triangle.
The degree of depth of said V-shaped groove makes high pressure transform gradually to low pressure and reduces from shallow to deep.
Said rear thrust plate body is provided with special-shaped enclosed slot.
On said forward and backward thrust plate body seamed edge, establish chamfering.
Said forward and backward thrust plate body is processed by high copper-manganese material.
Through on the rear thrust plate body, establishing the V-arrangement triangular groove; Make high pressure on the thrust plate to moment that low pressure transforms; Make the pressure of highly pressurised liquid can not produce the moment sudden change; Described highly pressurised liquid passes through progressively release pressure of this V-arrangement triangular groove, greatly reduces the noise of pump when high rotating speed, high pressure; And on the rear thrust plate body, increase by a special-shaped enclosed slot, highly pressurised liquid can guarantee the flow face under the situation of pocketed oil in this abnormity enclosed slot, and sufficient lubrication prevents rear thrust plate body and pump shaft, internal gear dry friction and burns.
The utility model is simple in structure, through on the rear thrust plate body, establishing special-shaped enclosed slot, increases its working life, and establishes the V-arrangement triangular groove above that, reduces the noise of pump when high rotating speed, high pressure, improves working environment.
Description of drawings
Fig. 1 is the perspective view of the front thrust plate of the utility model;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the perspective view of the rear thrust plate of the utility model;
Fig. 4 is the side view of Fig. 3.
Embodiment
Come further explain the utility model below in conjunction with specific embodiment and accompanying drawing.
Referring to Fig. 1 to Fig. 4; The port plate structure of described crescent gear pump; It comprises forward and backward thrust plate body 1,2; On this forward and backward thrust plate body 1,2, be respectively equipped with five assignment holes, on said rear thrust plate body 2, be provided with three and be used for the high- pressure buffer groove 23,27 that high pressure transforms to low pressure.
Forward and backward thrust plate body 1,2 in the utility model is provided with mounting hole 12,22; Said forward and backward thrust plate body 1,2 acts on mounting hole 12,22 through position limit pin respectively and is fixed in the pump, prevents that this forward and backward thrust plate body 1,2 from rotating with pump shaft, internal gear.
The effect of the assignment hole that on rear thrust plate body 2, is provided with has two kinds, and a kind of is directly to be in the zone of high pressure entirely, and like the assignment hole among Fig. 3 25, effect is the bottom of guiding to highly pressurised liquid front and back support; During another kind of the operation, need high pressure to transform to low pressure, like the assignment hole among Fig. 3 24, it need progressively be converted into low pressure liquid with highly pressurised liquid.Wherein, in the assignment hole that low pressure transforms, have plenty of and produce entrap phenomenon in the internal spline that prevents internal gear, also have plenty of and prevent generation entrap phenomenon in the outer teeth groove of axle at high pressure; And when axle and internal gear engagement, also can produce high pressure oil, and entrap phenomenon takes place, the part on the flow face on the rear thrust plate body 2 that is in contact with it also need be improved and be used to prevent that it from entrap phenomenon taking place.
The concrete improvement as follows, referring to Fig. 3, high pressure was on the assignment hole port of low pressure moment conversion when said high-pressure buffer groove 23 was located at operation; On the side of the flow face of the rear thrust plate body 2 that is in contact with it when axle and internal gear meshed when said high-pressure buffer groove 27 was located at operation; Said high- pressure buffer groove 23,27 all is used for the progressively conversion of high pressure to low pressure; Prevent that high pressure to the instantaneous pressure sudden change that low pressure transforms, reducing the noise of pump when high rotating speed, high pressure.
Preferably, said high- pressure buffer groove 23,27 is a V-shaped groove, and the sectional shape of this V-shaped groove is a triangle, and the degree of depth of V-shaped groove from shallow to deep, makes high pressure transform gradually to low pressure and reduces.Its purpose mainly is, highly pressurised liquid prevents that through level and smooth path the sudden change of pressure from getting final product getting into this high- pressure buffer groove 23,27 o'clock.Therefore, the sectional shape of described high- pressure buffer groove 23,27 also can be other shape, as long as said highly pressurised liquid is that level and smooth cambered surface can when flowing through this high-pressure buffer groove 23.27.
In order to prevent that the flow face is under the pocketed oil situation; Dry friction takes place between rear thrust plate body 2 and pump shaft, the internal gear; On said rear thrust plate body 2, be provided with special-shaped enclosed slot 26, when entrap phenomenon took place, the liquid in the said special-shaped enclosed slot 26 can carry out lubricated effectively to the flow face; Protect the flow face, increased its working life.
During assembling, referring to Fig. 2 and Fig. 4, in order to prevent to interfere with the pump shaft root, on the seamed edge of said forward and backward thrust plate body 1,2, establish chamfering 12,28, this chamfering 12,28 has also played certain function for reducing the flow area.At last, said forward and backward thrust plate body 1,2 is processed by high copper-manganese material, has replaced traditional beryllium-bronze material, makes that its wear resistance and intensity are better.
The above is merely the detailed description of the utility model preferred embodiment and graphic, is not to be used for limiting the utility model, and the embodiment or the approximate construction of all similar variations of doing according to the creation spirit of the utility model all should be contained among the utility model.
Claims (8)
1. the port plate structure of a crescent gear pump comprises forward and backward thrust plate body, on this forward and backward thrust plate body, is provided with assignment hole, it is characterized in that: on said rear thrust plate body, be provided with and be used for the high-pressure buffer groove that high pressure transforms to low pressure.
2. the port plate structure of crescent gear pump according to claim 1 is characterized in that: on the side of the flow face that high pressure transformed to low pressure moment when said high-pressure buffer groove one end was located at operation or on the assignment hole.
3. the port plate structure of crescent gear pump according to claim 1 and 2, it is characterized in that: said high pressure oil dashpot is a V-shaped groove.
4. the port plate structure of crescent gear pump according to claim 3, it is characterized in that: the sectional shape of said V-shaped groove is a triangle.
5. the port plate structure of crescent gear pump according to claim 3 is characterized in that: the degree of depth of said V-shaped groove makes high pressure transform gradually to low pressure and reduces from shallow to deep.
6. the port plate structure of crescent gear pump according to claim 1, it is characterized in that: said rear thrust plate body is provided with special-shaped enclosed slot.
7. the port plate structure of crescent gear pump according to claim 1 is characterized in that: on said forward and backward thrust plate body seamed edge, establish chamfering.
8. the port plate structure of crescent gear pump according to claim 1, it is characterized in that: said forward and backward thrust plate body is processed by high copper-manganese material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204402405U CN202360387U (en) | 2011-11-08 | 2011-11-08 | Thrust plate structure of internal gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204402405U CN202360387U (en) | 2011-11-08 | 2011-11-08 | Thrust plate structure of internal gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360387U true CN202360387U (en) | 2012-08-01 |
Family
ID=46571577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204402405U Expired - Fee Related CN202360387U (en) | 2011-11-08 | 2011-11-08 | Thrust plate structure of internal gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360387U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206375A (en) * | 2013-04-08 | 2013-07-17 | 同济大学 | Novel floating side plate for high-pressure large-displacement gear pump |
| CN103591021A (en) * | 2013-09-30 | 2014-02-19 | 同济大学 | Floating side plate for high-pressure large-displacement gear pump |
| CN103883517A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal gear pump structure |
-
2011
- 2011-11-08 CN CN2011204402405U patent/CN202360387U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206375A (en) * | 2013-04-08 | 2013-07-17 | 同济大学 | Novel floating side plate for high-pressure large-displacement gear pump |
| CN103591021A (en) * | 2013-09-30 | 2014-02-19 | 同济大学 | Floating side plate for high-pressure large-displacement gear pump |
| CN103883517A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal gear pump structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20131108 |