CN221169957U - Rotary oil pump - Google Patents
Rotary oil pump Download PDFInfo
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- CN221169957U CN221169957U CN202323257572.1U CN202323257572U CN221169957U CN 221169957 U CN221169957 U CN 221169957U CN 202323257572 U CN202323257572 U CN 202323257572U CN 221169957 U CN221169957 U CN 221169957U
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- 239000007788 liquid Substances 0.000 claims abstract description 114
- 238000007789 sealing Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a rotary oil pump which comprises a pump body, a liquid inlet, a liquid outlet, a crankshaft, an output shaft and at least two groups of driving oil ways, wherein the liquid inlet, the liquid outlet, the crankshaft and the output shaft are integrated in the pump body; each driving oil way comprises a liquid inlet one-way valve, a piston cavity, a piston and a liquid outlet one-way valve, and each driving oil way is arranged around the crankshaft and used for driving the crankshaft to rotate; the liquid inlet is distributed and communicated with the liquid inlet check valve inlets of the driving oil ways through liquid inlet passages; the liquid inlet one-way valve comprises a vertical valve cavity and a valve ball, wherein the lower end of the vertical valve cavity is an inlet, the upper end of the vertical valve cavity is an outlet, the valve ball can be driven by hydraulic power to reciprocate in the vertical direction in the valve cavity, the inlet is closed when the valve ball is positioned at the lower end, and the inlet and the outlet are communicated by dislocation with the outlet when the valve ball is positioned above; the liquid outlet one-way valve has the same structure as the liquid inlet one-way valve, the lower end inlet of the liquid outlet one-way valve is communicated with the oil outlet of the piston cavity, and the upper end outlet is communicated with the liquid outlet through a liquid outlet passage. The rotary oil pump can meet the requirement of low rotation speed.
Description
Technical Field
The utility model relates to the technical field of oil pumps, in particular to a rotary oil pump.
Background
The traditional rotary oil pump is a pump body type which uses a rotary oil path for rotary control and is characterized by stable rotary power.
The working principles of rotary oil pumps are different in size, and the differences are mostly due to the differences of oil path designs, so that the applicable working conditions of the oil pumps are different.
At present, the oil pump applied to the field of pile machines has wider requirement range for rotating speed, especially has more low-rotating-speed scenes, and the oil way switching valve core applied to the oil pump in the field of pile machines on the market at present adopts a movable metal sheet with a certain thickness to horizontally block the oil inlet of the corresponding end to realize oil way switching, so that the oil pump needs higher oil pressure and speed, and when the speed is lower, the power of the metal sheet is easily insufficient, so that the oil pumps are difficult to meet the low-rotating-speed requirement.
Therefore, it is required to design a rotary oil pump having a new oil path switching structure to meet the low rotation speed demand.
In order to solve the above problems, an ideal technical solution is always sought.
Disclosure of utility model
The utility model aims at overcoming the defects of the prior art, and provides a rotary oil pump capable of meeting the requirement of low rotation speed.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a rotary oil pump comprises a pump body, a liquid inlet, a liquid outlet, a crankshaft, an output shaft and at least two groups of driving oil ways, wherein the liquid inlet, the liquid outlet, the crankshaft and the output shaft are integrated in the pump body;
each driving oil way comprises a liquid inlet one-way valve, a piston cavity, a piston and a liquid outlet one-way valve, and each driving oil way is arranged around the crankshaft and used for driving the crankshaft to rotate;
The liquid inlet is distributed and communicated with liquid inlet check valve inlets of all driving oil ways through liquid inlet passages;
The liquid inlet one-way valve comprises a vertical valve cavity and a valve ball, wherein the lower end of the vertical valve cavity is an inlet, the upper end of the vertical valve cavity is an outlet, the valve ball can be driven by hydraulic power to reciprocate in the vertical direction in the valve cavity, the inlet is sealed when the valve ball is positioned at the lower end, and the valve ball is misplaced with the outlet when the valve ball is separated from the lower end or positioned above so as to lead the inlet and the outlet to be communicated;
The piston cavity is horizontally arranged, the piston is arranged in the piston cavity, the driving end of the piston cavity is used for driving the crankshaft to rotate, the crankshaft is used for driving the output shaft to rotate, and the outlet of the liquid inlet one-way valve is communicated with the oil inlet of the piston cavity;
The liquid outlet one-way valve has the same structure as the liquid inlet one-way valve, the lower end inlet of the liquid outlet one-way valve is communicated with the oil outlet of the piston cavity, and the upper end outlet of the liquid outlet one-way valve is communicated with the liquid outlet through a liquid outlet passage.
Based on the above, each driving oil path is distributed around the crankshaft at equal angles.
Based on the above, the number of the driving oil ways is 2 or 3.
Based on the above, the liquid inlet is arranged in the lower area of the side part of the pump body, and the liquid outlet is arranged in the upper area of the side part of the pump body.
The liquid inlet passage comprises annular oil passages arranged at the bottom of the pump body, and inlets of liquid inlet one-way valves of all driving oil passages are communicated with the annular oil passages at the bottom of the pump body.
The liquid outlet passage comprises an annular oil passage arranged at the top of the pump body, and the outlet of the liquid outlet one-way valve of each driving oil passage is communicated with the annular oil passage at the top of the pump body.
The pump body comprises a columnar main body, an upper sealing plate and a lower sealing plate, wherein the liquid inlet passage and the liquid outlet passage are annular grooves formed in the upper sealing plate and the lower sealing plate respectively, and the upper end and the lower end of the columnar main body seal the notch of the annular groove.
The driving ends of the pistons are respectively in running fit with the eccentric section of the crankshaft through the dislocated circular rings.
Compared with the prior art, the utility model has substantial characteristics and progress, and in particular has the following advantages:
1. The application reforms the driving oil way of the traditional oil pump, in particular changes the structural forms of the liquid inlet one-way valve, the liquid outlet one-way valve and the piston, designs the liquid inlet one-way valve and the liquid outlet one-way valve into a form of controlling the flow direction by utilizing the lifting of the valve ball, and the valve ball has smaller contact surface with the side wall of the valve cavity and smaller resistance due to the vertical movement characteristic, so that the valve ball can be easily propped open to lead the oil way to be conducted when the rotating speed is lower and the pressure difference of oil is insufficient, thereby solving the problem that the traditional horizontally arranged metal sheet has larger resistance to movement and is difficult to operate when the oil pressure is insufficient.
2. The design independence of the improved driving oil way is strong, and a plurality of driving oil ways can be arranged around the crankshaft to improve the efficiency.
3. The manner in which the pistons drive the crankshaft is more efficient relative to the impeller version.
Drawings
Fig. 1 is a cross-sectional view of a rotary oil pump according to the present utility model.
Fig. 2 is a partial enlarged view of the rotary oil pump in the present utility model.
Fig. 3 is a schematic view of the external structure of the rotary oil pump according to the present utility model.
FIG. 4 is a second schematic view of the external structure of the rotary oil pump according to the present utility model.
Fig. 5 is a schematic view of the feed passage of the rotary oil pump according to the present utility model.
Fig. 6 is a schematic view of a liquid outlet passage of the rotary oil pump according to the present utility model.
In the figure: 1. a pump body; 2. a liquid inlet; 3. a liquid outlet; 4. a crankshaft; 5. an output shaft; 6. a liquid inlet one-way valve; 7. a piston chamber; 8. a piston; 9. a liquid outlet one-way valve; 10. a liquid inlet passage; 11. a liquid outlet passage;
61. A valve cavity; 62. a valve ball; 63. an inlet; 64. an outlet;
21. A columnar body; 22. an upper sealing plate; 23. and a lower sealing plate.
Detailed Description
The technical scheme of the utility model is further described in detail through the following specific embodiments.
Example 1
As shown in fig. 1 and 2, a rotary oil pump comprises a pump body 1, a liquid inlet 2, a liquid outlet 3, a crankshaft 4, an output shaft 5 and at least two groups of driving oil ways, wherein the liquid inlet 2, the liquid outlet 3, the crankshaft 4 and the output shaft are integrated in the pump body 1.
Each driving oil way comprises a liquid inlet one-way valve 6, a piston cavity 7, a piston 8 and a liquid outlet one-way valve 9, each driving oil way is arranged around the crankshaft 4 and used for driving the crankshaft 4 to rotate, the crankshaft 4 is used for driving the output shaft 5 to rotate, and the output side of the crankshaft 4 is fixed with or integrally arranged with the output shaft 5.
The liquid inlet 2 is distributed and communicated with inlets of liquid inlet one-way valves 6 of all driving oil ways through liquid inlet passages 10;
The liquid inlet one-way valve 6 comprises a vertical valve cavity 61 and a valve ball 62, wherein the lower end of the vertical valve cavity 61 is provided with an inlet 63, the upper end of the vertical valve cavity 61 is provided with an outlet 64, the valve ball 62 can be driven to reciprocate in the vertical direction by hydraulic power, when the valve ball 62 is positioned at the lower end, the inlet 63 is sealed, when the valve ball 62 is positioned at the lower end or positioned above, the valve ball 62 is dislocated from the outlet to enable the inlet 63 and the outlet 64 to be communicated, that is, the inlet at the lower end of the valve cavity 61 is not right opposite to the outlet at the upper end in the vertical direction, the outlet at the upper end of the valve cavity 61 is positioned at a deviating position, when the valve ball 62 falls down, the inlet 63 is sealed, and when the valve ball 62 leaves the inlet 63 or reaches the top end of the valve cavity, the inlet 63 and the outlet 64 are communicated.
The piston cavity 7 is horizontally arranged, the piston 8 is arranged in the piston cavity 7, the driving end of the piston cavity 7 is used for driving the crankshaft 4 to rotate, specifically, the driving end of each piston is respectively in running fit with the eccentric section of the crankshaft through a staggered circular ring, the structure is in the same form of common crankshaft running driving, such as a compressor crankshaft of an automobile, and the outlet of the liquid inlet one-way valve 6 is communicated with the oil inlet of the piston cavity 7.
The liquid outlet one-way valve 9 has the same structure as the liquid inlet one-way valve 6, the lower end inlet of the liquid outlet one-way valve 9 is communicated with the oil outlet of the piston cavity 7, and the upper end outlet is communicated with the liquid outlet 3 through a liquid outlet passage 11.
Description of working principle:
two sets of driving oil ways and 180-degree distribution mode are taken as an example for explanation:
the oil enters the pump body by means of an external liquid supply system and is distributed to the driving oil paths through the liquid inlet passages 10.
When the eccentric area of the crankshaft rotates to the direction of the first piston cavity 7, the piston 6 moves outwards along the piston cavity 7, oil in the piston cavity 7 bears pressure, the valve ball bearing in the liquid inlet one-way valve 9 moves downwards to seal the inlet, the valve ball bearing in the liquid outlet one-way valve moves upwards to conduct the inlet and the outlet, and the oil flows out from the liquid outlet one-way valve and the liquid outlet passage to the liquid outlet 3.
At this time, in the piston cavity 7 at the other side, the space of the piston cavity is in the maximum state, the liquid inlet oil pressure is larger than the oil pressure in the piston cavity 7, the valve ball in the liquid inlet check valve 6 moves upwards to open the valve, the valve ball in the liquid outlet check valve 9 bears pressure to block the inlet at the lower end, and the oil enters the piston cavity 7 through the liquid inlet passage and the liquid inlet check valve to provide power for the rotation of the crankshaft.
The two piston cavities 7 on the two sides continuously rotate to act, drive the crankshaft to rotate, and then drive the output shaft to rotate.
Because of the unique designs of the liquid inlet check valve and the liquid outlet check valve, the blocking and the conduction resistance of the valve ball are extremely small, so that the oil pressure change amplitude is small at low rotation speed, the valve ball can be promoted to move to open the corresponding check valve so as to play a role, and the low rotation speed requirement is met.
In a preferred embodiment, the driving oil paths are equally distributed around the crankshaft, and the number of the driving oil paths may be 3 or more.
In another embodiment, as shown in fig. 3 and 4, the liquid inlet 2 is disposed in a lower region of the side of the pump body 1, and the liquid outlet 3 is disposed in an upper region of the side of the pump body 1.
In a preferred embodiment, as shown in fig. 5 and 6, the liquid inlet passage 10 includes an annular oil passage disposed at the bottom of the pump body 1, and the inlet of the liquid inlet check valve 6 of each driving oil passage is in communication with the annular oil passage at the bottom of the pump body.
The liquid outlet passage 11 comprises annular oil passages arranged at the top of the pump body 1, and the outlet of the liquid outlet one-way valve 9 of each driving oil passage is communicated with the annular oil passages at the top of the pump body.
Further, in a preferred embodiment, the pump body 1 includes a cylindrical main body 21, an upper sealing plate 22, and a lower sealing plate 23, and the liquid inlet passage 10 and the liquid outlet passage 11 are annular grooves formed on the upper sealing plate 22 and the lower sealing plate 23, respectively.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present utility model and are not limiting; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.
Claims (8)
1. A rotary oil pump, characterized in that: the device comprises a pump body, a liquid inlet, a liquid outlet, a crankshaft, an output shaft and at least two groups of driving oil ways, wherein the liquid inlet, the liquid outlet, the crankshaft, the output shaft and the at least two groups of driving oil ways are integrated in the pump body;
each driving oil way comprises a liquid inlet one-way valve, a piston cavity, a piston and a liquid outlet one-way valve, and each driving oil way is arranged around the crankshaft and used for driving the crankshaft to rotate;
The liquid inlet is distributed and communicated with liquid inlet check valve inlets of all driving oil ways through liquid inlet passages;
The liquid inlet one-way valve comprises a vertical valve cavity and a valve ball, wherein the lower end of the vertical valve cavity is an inlet, the upper end of the vertical valve cavity is an outlet, the valve ball can be driven by hydraulic power to reciprocate in the vertical direction in the valve cavity, the inlet is sealed when the valve ball is positioned at the lower end, and the valve ball is misplaced with the outlet when the valve ball is separated from the lower end or positioned above so as to lead the inlet and the outlet to be communicated;
The piston cavity is horizontally arranged, the piston is arranged in the piston cavity, the driving end of the piston cavity is used for driving the crankshaft to rotate, the crankshaft is used for driving the output shaft to rotate, and the outlet of the liquid inlet one-way valve is communicated with the oil inlet of the piston cavity;
The liquid outlet one-way valve has the same structure as the liquid inlet one-way valve, the lower end inlet of the liquid outlet one-way valve is communicated with the oil outlet of the piston cavity, and the upper end outlet of the liquid outlet one-way valve is communicated with the liquid outlet through a liquid outlet passage.
2. The rotary oil pump of claim 1 wherein: the driving oil paths are distributed around the crankshaft at equal angles.
3. The rotary oil pump according to claim 1 or 2, characterized in that: the number of the driving oil ways is 2 or 3.
4. A rotary oil pump according to claim 3, characterized in that: the liquid inlet is arranged in a lower area of the side part of the pump body, and the liquid outlet is arranged in an upper area of the side part of the pump body.
5. The rotary oil pump according to claim 1 or 2 or 4, characterized in that: the liquid inlet passage comprises annular oil passages arranged at the bottom of the pump body, and inlets of liquid inlet one-way valves of all driving oil passages are communicated with the annular oil passages at the bottom of the pump body.
6. The rotary oil pump of claim 5 wherein: the liquid outlet passage comprises annular oil passages arranged at the top of the pump body, and the outlets of the liquid outlet one-way valves of the driving oil passages are communicated with the annular oil passages at the top of the pump body.
7. The rotary oil pump of claim 6 wherein: the pump body comprises a columnar main body, an upper sealing plate and a lower sealing plate, wherein the liquid inlet passage and the liquid outlet passage are annular grooves formed in the upper sealing plate and the lower sealing plate respectively, and the upper end and the lower end of the columnar main body seal the notch of the annular groove.
8. The rotary oil pump of claim 7 wherein: the driving end of each piston is respectively in running fit with the eccentric section of the crankshaft through a staggered circular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323257572.1U CN221169957U (en) | 2023-11-30 | 2023-11-30 | Rotary oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323257572.1U CN221169957U (en) | 2023-11-30 | 2023-11-30 | Rotary oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221169957U true CN221169957U (en) | 2024-06-18 |
Family
ID=91535084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323257572.1U Active CN221169957U (en) | 2023-11-30 | 2023-11-30 | Rotary oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221169957U (en) |
-
2023
- 2023-11-30 CN CN202323257572.1U patent/CN221169957U/en active Active
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