CN217652906U - Internal gear pump stable in operation - Google Patents
Internal gear pump stable in operation Download PDFInfo
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- CN217652906U CN217652906U CN202221022856.5U CN202221022856U CN217652906U CN 217652906 U CN217652906 U CN 217652906U CN 202221022856 U CN202221022856 U CN 202221022856U CN 217652906 U CN217652906 U CN 217652906U
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- crescent
- gear pump
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- inner cavity
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Abstract
The utility model discloses a crescent gear pump which operates stably, comprising a gear pump shell, an external gear, a driving internal gear and a crescent plate component; the two ends of the gear pump shell are respectively connected with a front cover and a rear cover, and an inner cavity is formed in the gear pump shell; the outer gear is rotatably arranged in the inner cavity, and the outer diameter of the outer gear is equal to the inner diameter of the inner cavity; the driving inner gear is eccentrically arranged in the inner cavity, and the center of the driving inner gear is connected with a gear shaft; the crescent plate component is arranged in the inner cavity. The utility model discloses a setting of corresponding mechanism can make crescent gear pump stress balance at the operation in-process for crescent gear pump is inside to obtain good balanced state, and then makes the oil film that forms balanced state between crescent gear pump shell and the external gear, not only can reduce the mechanical wear that crescent gear pump leads to because of the atress is uneven, guarantees its life, can also reduce the noise that crescent gear pump produced in service.
Description
Technical Field
The utility model belongs to the technical field of the gear pump, concretely relates to crescent gear pump that operates steadily.
Background
The internal gear pump is one of gear pumps, and during operation, it mainly uses the principle of internal gear engagement, i.e. the pitch circles of internal and external gears are close to one side, and the other side is separated by "crescent plate" on the pump cover, and the driving internal gear on the main shaft drives the external gears to rotate in the same direction, and at the inlet, the gears are mutually separated to form negative pressure to suck in liquid, and at the outlet, the gears are continuously engaged to extrude and output the liquid.
When using, the existing internal gear pump is unreasonable in internal layout, so that the situation of unbalanced stress easily exists between the driving internal gear and the external gear in the operation process, and an oil film in an unbalanced state is formed between the internal gear pump shell and the external gear, the mechanical abrasion inside the internal gear pump is increased, the service life of the internal gear pump is shortened, and meanwhile, the internal gear pump is easy to generate noise when in operation.
Therefore, in view of the above technical problems, it is necessary to provide a crescent gear pump which operates smoothly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a crescent gear pump that operates steadily to solve foretell crescent gear pump and easily exist the problem of mechanical wear because of inside overall arrangement is unreasonable.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
a crescent gear pump with stable operation comprises a gear pump shell, an external gear, a driving internal gear and a crescent plate component;
the two ends of the gear pump shell are respectively connected with a front cover and a rear cover, and an inner cavity is formed in the gear pump shell;
the outer gear is rotatably arranged in the inner cavity, and the outer diameter of the outer gear is equal to the inner diameter of the inner cavity;
the driving internal gear is eccentrically arranged in the inner cavity, and a gear shaft is connected to the center of the driving internal gear;
the crescent plate component is arranged in the inner cavity and is arranged between the outer gear and the driving inner gear.
Furthermore, an oil suction port, an intermediate oil cavity and an oil outlet cavity are arranged on the gear pump shell, the oil suction port, the intermediate oil cavity and the oil outlet cavity are communicated with the inner cavity and used for sucking lubricating oil through the oil suction port, the intermediate oil cavity is used for temporarily storing the lubricating oil, and the oil outlet cavity is used for discharging the lubricating oil.
Further, the oil suction angle of the oil suction opening is 115 degrees.
Further, the angle of the intermediate oil chamber is 138 °.
Further, the oil outlet angle of the oil outlet cavity is 103 degrees.
Further, the eccentricity of the gear shaft is 8.8, so that the external gear and the driving internal gear achieve an optimal meshing state in the operation process, and the abrasion between the external gear and the driving internal gear is reduced.
Furthermore, the crescent board assembly comprises a crescent positioning pin which is used for mounting the crescent main board and the crescent auxiliary board;
the crescent positioning pin is arranged on the rear cover, a crescent main plate and a crescent auxiliary plate are connected to the crescent positioning pin, and the crescent main plate and the crescent auxiliary plate are used for separating an outer gear and an inner driving gear and further separating an oil suction opening and an oil outlet cavity;
be equipped with a plurality of plastic rods between crescent mainboard and the crescent subplate, the plastic rod through with the mutually supporting of crescent mainboard and crescent subplate for play the effect of compensation.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses a setting of corresponding mechanism can make crescent gear pump atress balanced in the operation process for crescent gear pump is inside to obtain good balanced state, and then makes the oil film that forms balanced state between crescent gear pump shell and the external gear, not only can reduce the mechanical wear that crescent gear pump leads to because of the atress is uneven, guarantees its life, can also reduce the noise that crescent gear pump produced in service.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a perspective view of a smooth-running internal gear pump according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a smooth-running internal gear pump according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a in fig. 2.
In the figure: 1. the gear pump comprises a gear pump shell, 101, an inner cavity, 102, an oil suction opening, 103, a middle oil cavity, 104, an oil outlet cavity, 2, an outer gear, 3, a driving inner gear, 301, a gear shaft, 4, a crescent plate assembly, 401, a crescent positioning pin, 402, a crescent main plate, 403, a crescent auxiliary plate and 404, a plastic rod.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiments, and structural, method or functional changes made by those skilled in the art according to the embodiments are all included in the scope of the present invention.
The utility model discloses a crescent gear pump that operates steadily, refer to fig. 1-3 and show, including gear pump casing 1, external gear 2, initiative internal gear 3, crescent moon board subassembly 4.
Wherein, gear pump shell 1's both ends are connected with protecgulum and hou gai respectively, are equipped with inner chamber 101 in the gear pump shell 1, and inner chamber 101 is used for installing outer gear 2, initiative internal gear 3 and crescent moon board subassembly 4.
In addition, an oil suction port 102, an intermediate oil chamber 103 and an oil outlet chamber 104 are arranged on the gear pump housing 1, the oil suction port 102, the intermediate oil chamber 103 and the oil outlet chamber 104 are all communicated with the inner chamber 101, lubricating oil is sucked through the oil suction port 102, the intermediate oil chamber 103 is used for temporarily storing lubricating oil, and the oil outlet chamber 104 is used for discharging the lubricating oil.
Specifically, the oil suction angle of the oil suction port 102 is 115 °, the angle of the middle oil cavity 103 is 138 °, the oil outlet angle of the oil outlet cavity 104 is 103 °, namely the angle indicated by the dotted line in fig. 2, and by setting the specific angles of the oil suction port 102, the middle oil cavity 103, and the oil outlet cavity 104, the external gear 2 and the internal driving gear 3 are stressed in a balanced manner in the operation process, so that a good balanced state is obtained, an oil film in a balanced state is formed between the gear pump housing 1 and the external gear 2, mechanical wear caused by uneven stress on the gear pump housing 1, the external gear 2, and the internal driving gear 3 is reduced, the service life of the whole gear pump housing 1 is ensured, and noise generation can also be reduced.
Referring to fig. 2-3, the external gear 2 is rotatably disposed in the inner cavity 101, and the external diameter of the external gear 2 is equal to the internal diameter of the inner cavity 101, when the driving internal gear 3 rotates, since the external gear 2 is meshed with the driving internal gear 3, the external gear 2 and the driving internal gear 3 can rotate synchronously, so that different pressure differences are generated between the oil suction opening 102 and the oil outlet cavity 104.
Referring to fig. 1-3, the driving internal gear 3 is eccentrically disposed in the inner cavity 101, a gear shaft 301 is connected to the center of the driving internal gear 3, and the specific position of the driving internal gear 3 is shown in fig. 2.
Preferably, the eccentricity of the gear shaft 301 is 8.8, so that the external gear 2 and the internal driving gear 3 achieve an optimal meshing state during operation, for reducing wear between the external gear 2 and the internal driving gear 3.
In addition, the outer gear 2 and the driving inner gear 3 both adopt involute gears, and an involute cutter is selected for machining, so that the meshing length of the outer gear 2 and the driving inner gear 3 can be ensured, the overall discharge capacity and pressure pulsation of the gear pump shell 1 are reduced, and the noise is greatly reduced.
Referring to fig. 2 to 3, the crescent plate assembly 4 is disposed in the inner cavity 101 and between the external gear 2 and the internal driving gear 3 for separating the external gear 2 and the internal driving gear 3.
Wherein, the crescent moon board assembly 4 includes a crescent moon locating pin 401 for installing a crescent moon main board 402 and a crescent moon auxiliary board 403.
In addition, a crescent positioning pin 401 is installed on the rear cover, a crescent main plate 402 and a crescent auxiliary plate 403 are connected to the crescent positioning pin 401, and the crescent main plate 402 and the crescent auxiliary plate 403 are used for separating the outer gear 2 and the driving inner gear 3 and further separating the oil suction opening 102 and the oil outlet cavity 104.
Specifically, a plurality of plastic rods 404 are arranged between the crescent main plate 402 and the crescent auxiliary plate 403, and the plastic rods 404 are matched with the crescent main plate 402 and the crescent auxiliary plate 403 to play a compensation role.
Preferably, the overall structure of the interior of the gear pump housing 1 is shown in fig. 2.
When the driving internal gear 2 is used, through the layout arrangement in the gear pump shell 1 in the application, when the driving internal gear 3 rotates, the driving internal gear 3 is meshed with the external gear 2, so that the external gear 2 can be driven to rotate in the same direction, the stress balance between the external gear 2 and the driving internal gear 3 can be realized, and the balance state can be kept in the inner cavity 101;
when the outer gear 2 and the driving inner gear 3 rotate in the same direction, negative pressure is formed at the oil suction port 102 and used for sucking lubricating oil, the lubricating oil forms a balanced oil film between the gear pump shell 1 and the outer gear 2, abrasion between the inner walls of the outer gear 2 and the inner cavity 101 is reduced, the service life of the whole gear pump shell 1 can be guaranteed, noise can be reduced, the lubricating oil passes through the middle oil cavity 103 and finally reaches the oil outlet cavity 104, and the outer gear 2 and the driving inner gear 3 are continuously embedded in the oil outlet cavity 104, so that the lubricating oil can be extruded and discharged.
According to the technical scheme provided by the utility model, the utility model discloses following beneficial effect has:
the utility model discloses a setting of corresponding mechanism can make crescent gear pump atress balanced in the operation process for crescent gear pump is inside to obtain good balanced state, and then makes the oil film that forms balanced state between crescent gear pump shell and the external gear, not only can reduce the mechanical wear that crescent gear pump leads to because of the atress is uneven, guarantees its life, can also reduce the noise that crescent gear pump produced in service.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. A smoothly operating crescent gear pump, comprising:
the gear pump comprises a gear pump shell (1), wherein a front cover and a rear cover are respectively connected to two ends of the gear pump shell (1), an inner cavity (101) is arranged in the gear pump shell (1), an oil suction port (102), an intermediate oil cavity (103) and an oil outlet cavity (104) are arranged on the gear pump shell (1), the oil suction port (102), the intermediate oil cavity (103) and the oil outlet cavity (104) are all communicated with the inner cavity (101), the oil suction angle of the oil suction port (102) is 115 degrees, the angle of the intermediate oil cavity (103) is 138 degrees, and the oil outlet angle of the oil outlet cavity (104) is 103 degrees;
the outer gear (2) is rotatably arranged in the inner cavity (101), and the outer diameter of the outer gear (2) is equal to the inner diameter of the inner cavity (101);
the driving inner gear (3) is eccentrically arranged in the inner cavity (101), a gear shaft (301) is connected to the center of the driving inner gear (3), and the eccentricity of the gear shaft (301) is 8.8;
the crescent plate component (4) is arranged in the inner cavity (101) and is arranged between the outer gear (2) and the driving inner gear (3).
2. A crescent gear pump that operates smoothly according to claim 1, characterized in that crescent moon board subassembly (4) includes crescent moon locating pin (401), crescent moon locating pin (401) is installed back cover is last, be connected with crescent moon mainboard (402) and crescent moon subplate (403) on crescent moon locating pin (401), be equipped with a plurality of plastics stick (404) between crescent moon mainboard (402) and crescent moon subplate (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221022856.5U CN217652906U (en) | 2022-04-29 | 2022-04-29 | Internal gear pump stable in operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221022856.5U CN217652906U (en) | 2022-04-29 | 2022-04-29 | Internal gear pump stable in operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217652906U true CN217652906U (en) | 2022-10-25 |
Family
ID=83663871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221022856.5U Active CN217652906U (en) | 2022-04-29 | 2022-04-29 | Internal gear pump stable in operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217652906U (en) |
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2022
- 2022-04-29 CN CN202221022856.5U patent/CN217652906U/en active Active
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