CN214464706U - Electric control variable axial plunger pump - Google Patents
Electric control variable axial plunger pump Download PDFInfo
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- CN214464706U CN214464706U CN202120305575.XU CN202120305575U CN214464706U CN 214464706 U CN214464706 U CN 214464706U CN 202120305575 U CN202120305575 U CN 202120305575U CN 214464706 U CN214464706 U CN 214464706U
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Abstract
The utility model discloses an automatically controlled variable axial plunger pump, which comprises a housin, be equipped with the transmission shaft in the casing, the transmission shaft bottom is equipped with outward and joins in marriage the food tray, and the one side of joining in marriage the food tray and keeping away from the transmission shaft is equipped with the back lid, and the transmission shaft joins in marriage food tray one side outward and is equipped with the cylinder body, and the food tray one side is equipped with the plunger outside joining in marriage the cylinder body, and the cylinder body top is equipped with the return stroke dish, and return stroke dish top is equipped with sways, sways the both ends and is equipped with control piston and return piston respectively, and the control piston outside is equipped with adjusting screw, and adjusting screw is equipped with the control valve outward, and the control valve is two-position three way solenoid valve. The constant-pressure constant flow valve on the plunger pump is removed, the two-position three-way electromagnetic valve is used for replacing the constant-pressure constant flow valve, and the electric signal is used for replacing the hydraulic pressure signal to control the variable flow of the pump, so that the requirement of changing the flow of the hydraulic system is conveniently met.
Description
Technical Field
The utility model relates to a plunger pump field specifically is an automatically controlled variable axial plunger pump.
Background
Plunger pumps are a kind of important branch of hydraulic pumps, can be more conveniently changed than gear pumps and vane pumps, and are widely applied to industrial equipment and engineering machinery. In recent years, with the improvement of the social requirement on environmental protection, the energy consumption requirement on various devices is also correspondingly improved. The traditional plunger pump variable is generally controlled by a mechanical mode and cannot be flexibly set at any time according to the requirements of the working conditions of equipment. Resulting in waste of energy and even deviation of equipment operation. For example: a client of our company originally uses an HA10V series constant pressure variable pump of our company, but a variable signal of the pump is a pressure signal of hydraulic oil, and the variable of the oil pump can be realized when a certain pressure value is reached. However, the pressure value of the original constant-pressure variable pump is set rather stiff and needs to be set manually by stopping the machine. This setting is inconvenient to adjust and the parameters cannot be set at will.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses an automatically controlled variable axial plunger pump.
The technical scheme of the utility model is that: automatically controlled variable axial plunger pump, which comprises a housin, be equipped with the transmission shaft in the casing, be equipped with outward and join in marriage the food tray bottom the transmission shaft, it is equipped with the back lid to join in marriage the food tray and keep away from one side of transmission shaft, the transmission shaft joins in marriage food tray one side outward and is equipped with the cylinder body, the cylinder body outside is joined in marriage food tray one side and is equipped with the plunger, the cylinder body top is equipped with the return stroke dish, return stroke dish top is equipped with and sways, it is equipped with control piston and return piston respectively to sway the both ends, the control piston outside is equipped with adjusting screw, adjusting screw is equipped with the control valve outward, the control valve is two-position three way solenoid valve.
Further, the plunger is located on the bottom surface of the return disc.
Further, the return piston is located on the outer side face of the plunger.
Further, the solenoid valve controls the control piston.
Further, the action area of the control piston is 4 times that of the return piston.
Furthermore, a spherical hinge is arranged between the swing and the transmission shaft.
The utility model discloses an useful part: the constant-pressure constant flow valve on the plunger pump is removed, the two-position three-way electromagnetic valve is used for replacing the constant-pressure constant flow valve, and the electric signal is used for replacing the hydraulic pressure signal to control the variable flow of the pump, so that the requirement of changing the flow of the hydraulic system is conveniently met.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the electromagnetic valve of the present invention;
wherein: 1. the device comprises a return piston, 2, a control piston, 3, an electromagnetic valve, 4, a plunger, 5, a transmission shaft, 6, a shell, 7, a spherical hinge, 8, a return disc, 9, a swing disc, 10, a cylinder body, 11, an oil distribution disc, 12, an adjusting screw rod, 13 and a rear cover.
Detailed Description
In order to deepen the understanding of the present invention, the following detailed description is given with reference to the accompanying drawings, which are only used for explaining the present invention and do not constitute a limitation to the protection scope of the present invention.
As shown in fig. 1, the electric control variable axial plunger pump includes a housing 6, a transmission shaft 5 is arranged in the housing 6, an oil distribution disc 11 is arranged outside the bottom of the transmission shaft 5, a rear cover 13 is arranged on one side of the oil distribution disc 11 far away from the transmission shaft 5, a cylinder body 10 is arranged on one side of the oil distribution disc 11 outside the transmission shaft 13, a plunger 4 is arranged on one side of the oil distribution disc 11 outside the cylinder body 10, the plunger 4 is located on the bottom surface of the return disc 8, a return disc 8 is arranged on the top of the cylinder body 10, a swing 9 is arranged above the return disc 8, a ball hinge 7 is arranged between the swing 9 and the transmission shaft 5, a control piston 2 and a return piston 1 are respectively arranged at two ends of the swing 9, the return piston 1 is located on the outer side surface of the plunger 4, an adjusting screw 12 is arranged outside the control piston 2, a control valve is arranged outside the adjusting screw 12, the control valve is a two-position three-way electromagnetic valve 3, and the electromagnetic valve 3 controls the control piston 2.
Under the condition that the electromagnetic valve 3 is not electrified, the right position of the valve is in a working state, the control piston cavity 2 of the plunger pump is communicated with an oil return cavity, the oil return cavity is communicated with an external oil tank through a pipeline, and the oil tank is communicated with the atmosphere, so that the pressure of hydraulic oil in the control piston cavity is the same as the atmosphere, the relative pressure is zero, and the hydraulic pressure acting on the control piston is zero. The acting force of the return piston 1 is two, namely the return spring force and the hydraulic pressure. The two resultant forces are larger than the acting force of the control piston, and the variable displacement mechanism of the pump is the maximum displacement under the pushing of the return piston 1. When the solenoid valve 3 is energized, the left position of the valve is in a working state, communicating the control piston chamber 2 with the high pressure oil chamber of the pump. The high-pressure oil chamber of the pump is communicated with the oil outlet of the oil pump through an internal oil path, so that the hydraulic pressure of the control piston chamber is the pressure of the oil outlet of the oil pump. The oil in the return piston cavity is normally communicated with an oil outlet of the oil pump, so the hydraulic pressure of the return piston cavity is always equal to the pressure of the oil outlet of the oil pump, although the hydraulic pressure of the control piston is the same as that of the return piston, the action area of the control piston is 4 times that of the return piston, the acting force of the hydraulic oil is also four times that of the return piston, although the hydraulic pressure of the control piston is the same as that of the return piston, the action area of the control piston is 4 times that of the return piston, and the displacement of a variable mechanism of the oil pump is reduced to the set small displacement under the pushing of the control piston. Therefore, the original hydraulic pressure control is used for realizing the conversion of the two displacements of the plunger pump, and the conversion of the two displacements is changed into the conversion of the electric signal control.
Claims (6)
1. Electrically controlled variable axial plunger pump, including the casing, its characterized in that: the oil distribution device is characterized in that a transmission shaft is arranged in the shell, an oil distribution disc is arranged outside the bottom of the transmission shaft, a rear cover is arranged on one side, away from the transmission shaft, of the oil distribution disc, a cylinder body is arranged on one side, outside the transmission shaft, of the oil distribution disc, a plunger is arranged on one side, outside the cylinder body, of the oil distribution disc, a return disc is arranged on the top of the cylinder body, a swing is arranged above the return disc, a control piston and a return piston are arranged at two ends of the swing respectively, an adjusting screw is arranged outside the control piston, a control valve is arranged outside the adjusting screw, and the control valve is a two-position three-way electromagnetic valve.
2. An electrically variable axial piston pump according to claim 1, wherein: the plunger is located on the bottom surface of the return disc.
3. An electrically variable axial piston pump according to claim 1, wherein: the return piston is positioned on the outer side surface of the plunger.
4. An electrically variable axial piston pump according to claim 1, wherein: the solenoid valve controls the control piston.
5. An electrically variable axial piston pump according to claim 1, wherein: the action area of the control piston is 4 times that of the return piston.
6. An electrically variable axial piston pump according to claim 1, wherein: a spherical hinge is arranged between the swing and the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120305575.XU CN214464706U (en) | 2021-02-03 | 2021-02-03 | Electric control variable axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120305575.XU CN214464706U (en) | 2021-02-03 | 2021-02-03 | Electric control variable axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464706U true CN214464706U (en) | 2021-10-22 |
Family
ID=78142669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120305575.XU Active CN214464706U (en) | 2021-02-03 | 2021-02-03 | Electric control variable axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464706U (en) |
-
2021
- 2021-02-03 CN CN202120305575.XU patent/CN214464706U/en active Active
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