Oil-supplementing type gear pump
阅读说明:本技术 一种补油式齿轮泵 (Oil-supplementing type gear pump ) 是由 司国雷 李侃 陈君辉 李彬杰 何毅 于 2020-07-09 设计创作,主要内容包括:本发明公开了一种补油式齿轮泵,包括泵壳体以及安装固定于所述泵壳体中的主动齿轮和从动齿轮,所述主动齿轮和/或所述从动齿轮中设有分别连通至各自的齿轮槽底的齿轮流道,所述齿轮流道中设有用以供油液单向流入所述齿轮槽底的单向阀。上述补油式齿轮泵通过在齿轮中设置单向阀,在齿轮泵运行于高速工况时,油液通过单向阀流入齿轮槽底,能够对由于离心力而使齿槽油液与齿槽之间形成的空腔进行油液补充,从而提高齿轮槽的油液运载量,达到提高容积效率的目的。(The invention discloses an oil supplementing type gear pump which comprises a pump shell, a driving gear and a driven gear, wherein the driving gear and the driven gear are installed and fixed in the pump shell, gear runners which are respectively communicated to the bottoms of the gear troughs are arranged in the driving gear and/or the driven gear, and one-way valves used for allowing oil to flow into the bottoms of the gear troughs in a one-way mode are arranged in the gear runners. Above-mentioned mend oily formula gear pump is through setting up the check valve in the gear, when the gear pump ran in high-speed operating mode, and fluid passes through the check valve and flows into the gear tank bottom, can carry out fluid to the cavity that forms between messenger's tooth's socket fluid and the tooth's socket because centrifugal force and supply to improve the fluid load capacity of gear tank, reach the purpose that improves the volumetric efficiency.)
1. The oil supplementing type gear pump comprises a pump shell (1), and a driving gear (3) and a driven gear (4) which are installed and fixed in the pump shell (1), and is characterized in that gear runners which are communicated to the bottoms of the respective gear troughs are arranged in the driving gear (3) and/or the driven gear (4), and one-way valves (5) for allowing oil to flow into the bottoms of the gear troughs in a one-way mode are arranged in the gear runners.
2. Gear pump according to claim 1, characterized in that the gear parts of the driving gear (3) and the driven gear (4) are meshed, and the check valve (5) is provided at the shaft parts of the driving gear (3) and the driven gear (4).
3. Gear pump according to claim 2, characterized in that the non-return valve (5) is inserted and fixed in the first flow channel of the shaft part.
4. The oil replenishment gear pump of claim 3, wherein the gear flow passages include a second flow passage communicating with the first flow passage and a third flow passage communicating with the second flow passage, the second flow passage extending from the shaft portion toward the gear portion, the third flow passage extending from the gear portion toward the gear groove bottom.
5. The oil replenishment type gear pump according to claim 4, wherein the number of the third flow passages is plural, a plurality of the third flow passages radiate from the gear portion to the outer periphery, and a plurality of the third flow passages are connected to the bottom of each of the gear grooves.
6. Oil-filled gear pump according to claim 3, characterized by comprising a connecting shaft (6) in threaded connection with the shaft part, the connecting shaft (6) being provided with a through hole communicating with the gear flow channel.
7. The oil replenishment type gear pump according to any one of claims 1 to 6, further comprising a bearing assembly (2) and an end cover (7), wherein the end cover (7) and the pump housing (1) form a closed cavity, and the driving gear (3) and the driven gear (4) are fixedly mounted in the closed cavity through the bearing assembly (2).
8. Gear pump according to claim 7, characterized in that the number of bearing assemblies (2) is several groups, each group of bearing assemblies (2) comprising two half 8-shaped bearings fixed by a key connection to form a complete 8-shape.
9. Gear pump according to claim 8, characterized in that the end cover (7) is provided with an end cover flow channel (71) communicating with the gear flow channel.
10. Oil-filled gear pump according to any one of claims 1 to 6, characterized by further comprising a drive motor connected to the drive gear (3) by a coupling.
Technical Field
The invention relates to the technical field of liquid variable-volume machinery, in particular to an oil-supplementing type gear pump.
Background
The gear pump is one of power sources of a hydraulic system, is widely applied to various hydraulic systems, and is widely applied to the fields of aviation, aerospace, engineering machinery, ships, coal mines, agricultural machinery and the like.
At present, the volumetric efficiency of the gear pump in the civil field can reach more than 95%, various requirements in the civil field can be met, however, for the gear pump for the aviation and aerospace fields, the rotating speed of the gear pump is high, the centrifugal acting force is large, a cavity can be formed at the bottom of a gear groove, the volumetric efficiency is often unsatisfactory, the performance of engines for missiles, rockets and the like is seriously affected, and once the engines fail due to poor performance of the gear pump, serious loss can be caused.
Therefore, it is an urgent need to solve the problem of providing an oil replenishment gear pump that can solve the problem of the decrease in volumetric efficiency of the gear pump due to the formation of a cavity at the bottom of the gear groove.
Disclosure of Invention
The invention aims to provide an oil supplementing type gear pump, wherein a check valve is arranged in a gear, when the gear pump operates in a high-speed working condition, oil flows into the bottom of a gear groove through the check valve, and the oil can be supplemented to a cavity formed between tooth groove oil and a tooth groove due to centrifugal force, so that the oil carrying capacity of the gear groove is improved, and the aim of improving the volume efficiency is fulfilled.
In order to achieve the above object, the present invention provides an oil supplementing gear pump, which includes a pump housing, and a driving gear and a driven gear mounted and fixed in the pump housing, wherein gear runners respectively communicated to respective gear slot bottoms are provided in the driving gear and/or the driven gear, and a check valve for allowing oil to flow into the gear slot bottoms in a one-way manner is provided in the gear runners.
Preferably, the gear parts of the driving gear and the driven gear are engaged, and the one-way valve is arranged on the shaft parts of the driving gear and the driven gear.
Preferably, the one-way valve is inserted and fixed in the first flow passage of the shaft portion.
Preferably, the gear flow passage includes a second flow passage communicating with the first flow passage and a third flow passage communicating with the second flow passage, the second flow passage extending from the shaft portion toward the gear portion, the third flow passage extending from the gear portion toward the gear groove bottom.
Preferably, the number of the third flow passages is plural, the plural third flow passages radiate to the outer periphery with the gear portion as a center, and the plural third flow passages communicate with the bottom of each gear groove.
Preferably, the gear flow passage connecting device comprises a connecting shaft in threaded connection with the shaft part, and the connecting shaft is provided with a through hole communicated with the gear flow passage.
Preferably, the pump further comprises a bearing assembly and an end cover, the end cover and the pump housing form a closed cavity, and the driving gear and the driven gear are fixedly mounted in the closed cavity through the bearing assembly.
Preferably, the number of the bearing assemblies is multiple groups, and each group of the bearing assemblies comprises two half-word bearings which are fixedly connected through keys to form a complete word shape.
Preferably, the end cover is provided with an end cover flow passage communicated with the gear flow passage.
Preferably, the device further comprises a driving motor connected with the driving gear through a coupler.
Compared with the prior art, the oil supplementing type gear pump provided by the invention comprises a pump shell, a driving gear and a driven gear, wherein the driving gear and the driven gear are installed and fixed in the pump shell, a gear runner is arranged in the driving gear and/or the driven gear, a one-way valve is arranged in the gear runner, the gear runner of the driving gear is communicated to the gear groove bottom of the driving gear, the gear runner of the driven gear is communicated to the gear groove bottom of the driven gear, and oil is supplied to the one-way valve to flow into the gear groove bottom in a; this mend oily formula gear pump passes through the check valve in order to realize the one-way inflow of fluid, when the gear pump ran in high-speed operating mode, the fluid at the gear groove bottom of driving gear and driven gear flies off and form the cavity under the effect of centrifugal force, and fluid passes through the check valve and flows into the gear groove bottom this moment, carries out fluid to the cavity that forms between tooth's socket fluid and the tooth's socket and supplyes to improve the fluid load capacity of gear groove, reach the purpose that improves the volumetric efficiency.
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 following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an oil replenishment type gear pump according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the bearing assembly of FIG. 1;
FIG. 3 is a schematic view of the check valve of FIG. 1;
FIG. 4 is a schematic view of the drive gear of FIG. 1;
FIG. 5 is a cross-sectional view of the drive gear of FIG. 4 in a first orientation;
FIG. 6 is a cross-sectional view of the drive gear of FIG. 4 in a second orientation;
FIG. 7 is a schematic view of the driven gear of FIG. 1;
FIG. 8 is a schematic view of the driven gear of FIG. 7 in a first direction;
FIG. 9 is a second directional schematic view of the driven gear of FIG. 7;
FIG. 10 is a schematic structural view of the pump housing of FIG. 1;
FIG. 11 is a schematic plan view of the pump housing of FIG. 10;
FIG. 12 is a cross-sectional schematic view of the pump housing of FIG. 10;
fig. 13 is a schematic structural view of the end cap of fig. 1.
Wherein:
1-pump shell, 2-bearing assembly, 3-driving gear, 4-driven gear, 5-one-way valve, 6-connecting shaft, 7-end cover, 11-shell flow channel, 31-main gear first flow channel, 32-main gear second flow channel, 33-main gear third flow channel, 41-slave gear first flow channel, 42-slave gear second flow channel, 43-slave gear third flow channel, 51-one-way valve first flow channel, 52-one-way valve second flow channel, 53-one-way valve third flow channel, 54-one-way valve fourth flow channel and 71-end cover flow channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 13, wherein fig. 1 is a schematic structural diagram of an oil replenishing type gear pump according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a bearing assembly in fig. 1, fig. 3 is a schematic structural diagram of a check valve in fig. 1, fig. 4 is a schematic structural diagram of a driving gear in fig. 1, fig. 5 is a schematic sectional diagram of a driving gear in fig. 4 in a first direction, fig. 6 is a schematic sectional diagram of a driving gear in fig. 4 in a second direction, fig. 7 is a schematic structural diagram of a driven gear in fig. 1, fig. 8 is a schematic structural diagram of a driven gear in a first direction in fig. 7, fig. 9 is a schematic structural diagram of a driven gear in a second direction in fig. 7, fig. 10 is a schematic structural diagram of a pump housing in fig. 1, fig. 11 is a schematic plan view of the pump housing in fig. 10, fig. 12 is a schematic sectional diagram of the.
In a first specific embodiment, the oil supplementing type gear pump provided by the invention comprises a
In this embodiment, the
In the working principle of oil supplement, the key lies in that gear runners leading to the bottoms of the gear grooves are arranged in the
More specifically, the gear pump is an external gear pump, the
More specifically, the
In this embodiment, the gear flow passage further includes a second flow passage communicating with the first flow passage and a third flow passage communicating with the second flow passage, the second flow passage extends horizontally from the shaft portion toward the gear portion, and the third flow passage extends vertically from the gear portion toward the gear groove bottom.
More specifically, the gear flow passage of the
For better technical effect, the gear groove bottom is provided with a plurality of third flow passages on the peripheral side of the gear part, the number of the third flow passages is a plurality, namely the number of the main gear
In addition, the one-way valve is characterized by further comprising a connecting shaft 6 in threaded connection with the shaft part, the connecting shaft 6, the
Besides, the pump also comprises a
In the present embodiment, the number of the
More specifically,
Further, the
It is emphasized that the improvement of the invention is that the one-
In the use process of the gear pump, the inner circular surface of the
In addition, the
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The oil-replenishing gear pump provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
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