CN216922660U - Hydraulic pump station provided with closed pressure oil tank and suitable for outdoor environment - Google Patents
Hydraulic pump station provided with closed pressure oil tank and suitable for outdoor environment Download PDFInfo
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- CN216922660U CN216922660U CN202220369750.6U CN202220369750U CN216922660U CN 216922660 U CN216922660 U CN 216922660U CN 202220369750 U CN202220369750 U CN 202220369750U CN 216922660 U CN216922660 U CN 216922660U
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Abstract
The application discloses hydraulic power unit who disposes airtight pressure oil tank suitable for outdoor environment, this hydraulic power unit includes: the air bag, the oil tank and the motor oil pump device; the top of the oil tank is provided with a first mounting hole, and the bottom of the oil tank is provided with a second mounting hole; an oil pump is arranged at the bottom of the motor oil pump device, the oil pump is arranged in the first mounting hole, an oil supply connector is arranged on the side wall of the motor oil pump device, one end of the oil supply connector is connected to the oil pump, and the oil pump is used for pumping oil in an oil tank out through the oil supply connector; the gasbag is installed in the cavity of oil tank, and the leather bag of gasbag connects the mouth to pass through coupling nut to be installed in the second mounting hole, and the gasbag intussuseption is filled with gas, and wherein, gasbag inflation or shrink are in order to balance the pressure in the oil tank. Through the technical scheme in this application, help solving in the outdoor environment hydraulic power unit's the conventional oil tank hydraulic oil emulsification and sand and dust pollution problem.
Description
Technical Field
The application relates to the technical field of hydraulic power unit, in particular to a hydraulic power unit provided with a sealed pressure oil tank and applicable to outdoor environment.
Background
The hydraulic pump station is a device for providing high-pressure oil for the hydraulic control valve, and the movement of the hydraulic oil cylinder is controlled by the hydraulic valve. When the hydraulic oil cylinder moves, the volume of hydraulic oil in the oil tank changes. Traditionally, an air filter is installed on an oil tank as a breathing port to meet functional requirements.
When hydraulic power unit uses when outdoor environment, the change of the difference in temperature can produce the comdenstion water at the oil tank inner wall round the clock, makes hydraulic oil take place the emulsification, causes the damage of pump, valve among the hydraulic system, the loss function. Meanwhile, in a windy and sandy environment, an air filter on the oil tank is easy to block, the through-flow capacity is reduced, and sand and dust are easy to enter the oil tank to pollute hydraulic oil.
In addition, when the outdoor environment temperature is reduced, the viscosity of oil in the mailbox is increased, so that the oil pump is difficult to absorb oil.
SUMMERY OF THE UTILITY MODEL
The purpose of this application lies in: the problems of emulsification of hydraulic oil and sand pollution in a conventional pressure oil tank of a hydraulic pump station in an outdoor environment are solved.
The technical scheme of the application is as follows: the utility model provides a hydraulic power unit who configures airtight pressure tank suitable for outdoor environment, this hydraulic power unit includes: the air bag, the oil tank and the motor oil pump device; the top of the oil tank is provided with a first mounting hole, and the bottom of the oil tank is provided with a second mounting hole; the bottom of the motor oil pump device is provided with an oil pump, the oil pump is arranged in the first mounting hole, the side wall of the motor oil pump device is provided with an oil supply joint, one end of the oil supply joint is connected to the oil pump, and the oil pump is used for pumping oil in an oil tank out through the oil supply joint; the gasbag is installed in the cavity of oil tank, and the leather bag of gasbag connects the mouth to pass through coupling nut to be installed in the second mounting hole, and the gasbag intussuseption is filled with gas, and wherein, gasbag inflation or shrink are in order to balance the pressure in the oil tank.
In any one of the above technical solutions, further, the electric machine oil pump device includes: the motor, the mounting block and the coupling; the mounting block is mounted at the top of the oil tank through a connecting bolt, a through hole is formed in the center of the mounting block, and a coupler is mounted in the through hole; the motor is arranged above the mounting block through a motor mounting screw, and a rotating shaft of the motor is connected to one end of the coupler; the oil pump passes through oil pump mounting screw to be installed in the below of installation piece, and the rotating shaft of oil pump is connected in the other end of shaft coupling, and wherein, the motor is used for driving the oil pump and rotates.
Among the above-mentioned any one technical scheme, furtherly, the inside of installation piece is provided with fuel feeding passageway and oil return channel, and fuel feeding passageway and oil return channel's one end sets up in the lateral wall of installation piece, and fuel feeding passageway and oil return channel's the other end sets up in the bottom of installation piece, and fuel feeding joint installs in fuel feeding passageway's one end, and fuel feeding joint sets up in the lateral wall of installation piece, and motor oil pump unit still includes: an oil return joint and an electromagnetic valve; the oil return joint is arranged at one end of the oil return channel and is arranged on the side wall of the mounting block; the electromagnetic valve is arranged on the oil supply channel and used for conducting or sealing the oil supply channel.
Among any above-mentioned technical scheme, furtherly, still be provided with the oil spilling hole on the installation piece, motor oil pump unit still includes: an overflow valve; the overflow valve is arranged above the oil overflow hole.
Among the above-mentioned any one technical scheme, furtherly, the inside of installation piece still is provided with exhaust passage, and exhaust passage's one end sets up in the lateral wall of installation piece, and exhaust passage's the other end sets up in the bottom of installation piece, and motor oil pump unit still includes: a pressure measuring exhaust joint; the pressure measurement exhaust joint is arranged at one end of the exhaust passage and is arranged on the side wall of the mounting block.
In any one of the above technical solutions, further, the airbag includes: a leather bag, a sealing ring and an inflation valve; the leather bag is arranged in a cavity of the oil tank, and a sealing ring is arranged between the bottom of the leather bag and the upper end of the leather bag nozzle; the inflation valve is arranged at the lower end of the leather bag connector and is used for conducting or sealing the leather bag connector.
In any one of the above technical solutions, further, the airbag further includes: a protective cover; the protective cover is coated on the outer sides of the inflation valve and the leather bag connector.
In any one of the above technical solutions, further, the oil tank includes: the connecting plate, the cylinder, the bottom plate and the leather bag mounting joint; the top of the cylinder body is provided with a connecting plate, the connecting plate is provided with a first mounting hole, the bottom of the cylinder body is provided with a bottom plate, and the bottom plate is provided with a second mounting hole; the leather bag mounting joint is mounted in the second mounting hole and matched with the connecting nut so as to mount a leather bag nozzle of the air bag.
Among any one of the above-mentioned technical scheme, further, the edge of connecting plate top is provided with the recess, and hydraulic power unit still includes: a sealing strip; the sealing strip is arranged in the groove and used for sealing between the oil tank and the motor oil pump device.
In any one of the above technical solutions, further, the oil tank further includes: injecting and discharging oil joints; the oil injection and drainage connector is arranged on the side wall of the bottom of the barrel and used for injecting oil into the barrel or draining the oil out of the barrel.
The beneficial effect of this application is:
technical scheme in this application, to installing in outdoor environment's hydraulic power unit, it has gaseous gasbag to set up to pack in the inside of its conventional oil tank, and cooperation motor oil pump device, through the inflation or the shrink of gasbag, with balanced oil tank internal pressure, make in the oil tank keep apart with outside atmosphere completely, need not to use air cleaner, thereby hydraulic oil emulsification and sand and dust pollution problem have been solved, help prolonging hydraulic oil life, reduce hydraulic power unit's fortune dimension cost. Meanwhile, the air bag filled with gas (such as nitrogen) enables the inside of the oil tank to always maintain certain pressure, and the requirement of the oil pump for low-temperature oil absorption can be met.
Drawings
The advantages of the above and/or additional aspects of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a hydraulic pump station configured with a sealed pressure tank suitable for use in an outdoor environment according to one embodiment of the present application;
FIG. 2 is a schematic illustration of an electric machine oil pump arrangement according to an embodiment of the present application;
FIG. 3 is a schematic view of an airbag according to an embodiment of the present application;
FIG. 4 is a schematic view of a fuel tank according to an embodiment of the present application;
FIG. 5 is a partial schematic view of a seal strip according to one embodiment of the present application.
The device comprises an air bag 1, an air bag 11, a leather bag 12, a sealing ring 13, a leather bag connector 14, an inflation valve 15, a protective cover 2, an oil tank 21, a connecting plate 22, a cylinder 23, an oil injection and drainage connector 24, a base plate 25, a leather bag mounting connector 25, a motor oil pump device 3, a motor 31, a motor 32, a motor mounting screw 33, a spring washer 34, an overflow valve 35, an oil return connector 36, an oil supply connector 36, a mounting block 37, a coupler 38, an oil pump 39, an oil pump mounting screw 310, a pressure measurement exhaust connector 311, an electromagnetic valve 312, a sealing strip 4, a connecting bolt 5 and a connecting nut 6.
Detailed Description
In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the present embodiment provides a hydraulic pump station configured with a sealed pressure oil tank, which is suitable for outdoor environment, and the hydraulic pump station includes: an air bag 1, an oil tank 2 and a motor oil pump device 3; a first mounting hole is formed in the top of the oil tank 2, and a second mounting hole is formed in the bottom of the oil tank 2; an oil pump 39 is arranged at the bottom of the motor oil pump device 3, the oil pump 39 is arranged in the first mounting hole, an oil supply connector 36 is arranged on the side wall of the motor oil pump device 3, one end of the oil supply connector 36 is connected to the oil pump 39, and the oil pump 39 is used for pumping oil in the oil tank 2 out through the oil supply connector 36; the gasbag 1 is installed in the cavity of oil tank 2, and the leather bag mouth 13 of gasbag 1 passes through coupling nut 6 to be installed in the second mounting hole, and gasbag 1 intussuseption is filled with gas, and wherein, gasbag 1 inflation or shrink are in order to balance the pressure in the oil tank 2.
Specifically, the oil tank 2 in this embodiment is a welded structure, the top of the oil tank 2 is connected with the motor oil pump device 3 through the connecting bolt 5, the sealing strip 4 is installed between the oil tank and the motor oil pump device, the air bag 1 is installed at the bottom of the oil tank 2 through the connecting nut 6, oil is filled in the oil tank 2, and the inside of the oil tank is completely isolated from the external environment.
In the operation process, the hydraulic pump station is used for supplying oil to a hydraulic system (such as a hydraulic cylinder), and a certain amount of protective gas (such as nitrogen) is firstly filled into the air bag 1 according to the flow demand calculation of the hydraulic system, so that a certain pressure is established in the air bag 1.
When the oil amount required by the hydraulic system is increased, the volume of the oil in the oil tank 2 is reduced, and the air bag 1 is expanded to keep the lowest pressure requirement; when the hydraulic system needs the oil volume to reduce, the oil volume in the oil tank 2 increases, the air bag 1 contracts, and the pressure in the oil tank 2 is balanced.
In the whole process, the volume of the oil in the balance oil tank 2 is changed through the volume change of the air bag 1, and no external air enters, so that the problems of condensation of water vapor in the air and dust pollution are solved. Even under the extreme condition of low temperature, the gasbag 1 filled with nitrogen can also maintain a certain pressure in the oil tank 2 to meet the oil absorption requirement of the oil pump.
As shown in fig. 2, on the basis of the above embodiment, the present embodiment shows an implementation manner of the electric motor oil pump apparatus 3, and the electric motor oil pump apparatus 3 includes: the motor 31, the mounting block 37, and the coupling 38; the mounting block 37 is mounted on the top of the oil tank 2 through a connecting bolt 5, a through hole is formed in the center of the mounting block 37, and a coupler 38 is mounted in the through hole.
The electric motor 31 is installed above the installation block 37 through a motor installation screw 32, the electric motor 31 is used as a power device of a hydraulic pump station, a rotating shaft of the electric motor 31 is connected to one end of the coupling 38, and a spring washer 33 is installed on the motor installation screw 32 to ensure the installation reliability of the electric motor 31 and reduce the influence caused by the vibration of the electric motor. The oil pump 39 is mounted below the mounting block 37 by an oil pump mounting screw 310, and a rotating shaft of the oil pump 39 is connected to the other end of the coupling 38. When the motor 31 rotates, the motor 31 drives the oil pump 39 to rotate through the coupling 38, so as to pump out the oil in the oil tank 2.
Further, in order to facilitate the integrated design of the hydraulic pump, an oil supply channel and an oil return channel are arranged inside the mounting block 37, one end of the oil supply channel and one end of the oil return channel are arranged on the side wall of the mounting block 37, and the other end of the oil supply channel and the other end of the oil return channel are arranged at the bottom of the mounting block 37, wherein the oil supply channel at the bottom of the mounting block 37 is connected to the oil pump 39. The oil supply connector 36 is installed at one end of the oil supply channel, the oil supply connector 36 is installed on the side wall of the installation block 37, the oil supply connector 36 is connected to the oil supply end of the hydraulic system (such as a hydraulic cylinder) through an external pipeline, and an oil supply path of the hydraulic system is formed through the oil pump 39, the oil supply channel, the oil supply connector 36 and the external pipeline.
The motor oil pump device 3 further includes: an oil return joint 35; the oil return joint 35 is installed at one end of the oil return passage, the oil return joint 35 is installed on the side wall of the installation block 37, and the oil return joint 35 is also connected to the oil return end of the hydraulic system (such as a hydraulic cylinder) through an external pipeline, so that oil in the hydraulic system can flow back into the oil tank 2.
In order to realize the control to hydraulic power unit fuel feeding oil circuit, this motor oil pump unit 3 still includes: a solenoid valve 312; the electromagnetic valve 312 is disposed on the oil supply channel, and the electromagnetic valve 312 is used to open or close the oil supply channel to achieve the loading and unloading function of the hydraulic pump station.
Further, still be provided with the oil spilling hole on the installation piece 37, motor oil pump unit 3 still includes: an overflow valve 34; the overflow valve 34 is installed above the oil overflow hole to realize the safety protection function of the hydraulic pump station.
Further, the inside of the mounting block 37 is further provided with an exhaust passage, one end of the exhaust passage is arranged on the side wall of the mounting block 37, the other end of the exhaust passage is arranged at the bottom of the mounting block 37, and the electric oil pump device 3 further includes: a pressure measurement vent connector 311; the pressure measuring exhaust joint 311 is installed at one end of the exhaust passage, and the pressure measuring exhaust joint 311 is provided at a side wall of the installation block 37.
Specifically, when initially filling oil into the oil tank 2, the pressure measuring exhaust joint 311 is used to evacuate gas in the oil tank 2, after the gas is evacuated, the external pressure gauge is used to measure the pressure in the oil tank 2, and when the pressure reaches a designed value, the oil filling is stopped.
As shown in fig. 3, on the basis of the above embodiment, the present embodiment also shows an implementation manner of an airbag 1, where the airbag 1 includes: a leather bag 11, a sealing ring 12 and an inflation valve 14; the leather bag 11 is arranged in the cavity of the oil tank 2 and is in press fit and sealing with the oil tank 2, a sealing ring 12 is arranged between the bottom of the leather bag 11 and the upper end of the leather bag nozzle 13, wherein the sealing ring 12 is an O-shaped sealing ring, and the leather bag 11 can be made of nitrile rubber; the inflation valve 14 is installed at the lower end of the leather bag connector 13, and the inflation valve 14 is used for conducting or sealing the leather bag connector 13 so as to fill gas into the leather bag 11 and ensure the gas pressure inside the leather bag 11.
Further, the airbag 1 further includes: a protective cover 15; the protective cover 15 covers the outer sides of the inflation valve 14 and the bag connector 13 to prevent pollutants (such as sand and dust) in the external environment from polluting the inflation valve 14 and the bag connector 13 and affecting the normal operation of the air bag 1.
As shown in fig. 4, on the basis of the above-mentioned embodiment, the present embodiment further shows an implementation manner of the oil tank 2, the oil tank 2 is a welded structure and needs to ensure the air tightness, and the oil tank 2 at least comprises: a connecting plate 21, a cylinder 22, a bottom plate 24 and a bladder mounting joint 25; the top of the cylinder 22 is provided with a connecting plate 21, and the connecting plate 21 is provided with a first mounting hole for matching with the oil tank 2 and the oil pump 39; a bottom plate 24 is arranged at the bottom of the cylinder 22, and a second mounting hole is formed in the bottom plate 24; the leather bag mounting joint 25 is mounted in the second mounting hole, and the leather bag mounting joint 25 is matched with the connecting nut 6 to mount the leather bag connector 13 of the air bag 1.
Further, as shown in fig. 5, the edge above the connecting plate 21 is provided with a groove, and the hydraulic pump station further includes: a sealing strip 4; sealing strip 4 is installed in the recess, and sealing strip 4 is used for the sealed between oil tank 2 and motor oil pump unit 3, makes 2 inner chambers of oil tank keep apart with external environment.
Further, the oil tank 2 further includes: an oil injection and drainage joint 23; the oil injection and drainage connector 23 is arranged on the side wall of the bottom of the cylinder 22, and the oil injection and drainage connector 23 is used for injecting or draining oil into the cylinder 22, namely, hydraulic oil (oil) can be injected into the oil tank 2, and the hydraulic oil in the oil tank 2 can also be emptied.
The technical scheme of the present application is described in detail above with reference to the accompanying drawings, and the present application provides a hydraulic pump station with a closed pressure oil tank, which is suitable for outdoor environment, and comprises: the air bag, the oil tank and the motor oil pump device; the top of the oil tank is provided with a first mounting hole, and the bottom of the oil tank is provided with a second mounting hole; an oil pump is arranged at the bottom of the motor oil pump device, the oil pump is arranged in the first mounting hole, an oil supply connector is arranged on the side wall of the motor oil pump device, one end of the oil supply connector is connected to the oil pump, and the oil pump is used for pumping oil in an oil tank out through the oil supply connector; the gasbag is installed in the cavity of oil tank, and the leather bag of gasbag connects the mouth to pass through coupling nut to be installed in the second mounting hole, and the gasbag intussuseption is filled with gas, and wherein, gasbag inflation or shrink are in order to balance the pressure in the oil tank. Through the technical scheme in this application, help solving in the outdoor environment hydraulic power unit's the conventional oil tank hydraulic oil emulsification and sand and dust pollution problem.
In the present application, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The shapes of the various elements in the drawings are illustrative and do not preclude the existence of certain differences from the actual shapes, and the drawings are used for the purpose of illustrating the principles of the present application and are not intended to limit the present application.
Although the present application has been disclosed in detail with reference to the accompanying drawings, it is to be understood that such description is merely illustrative and not restrictive of the application of the present application. The scope of the present application is defined by the appended claims and may include various modifications, adaptations, and equivalents of the subject application without departing from the scope and spirit of the present application.
Claims (10)
1. A hydraulic power unit provided with a closed pressure oil tank and suitable for outdoor environment is characterized by comprising: an air bag (1), an oil tank (2) and a motor oil pump device (3);
a first mounting hole is formed in the top of the oil tank (2), and a second mounting hole is formed in the bottom of the oil tank (2);
an oil pump (39) is arranged at the bottom of the motor oil pump device (3), the oil pump (39) is arranged in the first mounting hole, an oil supply joint (36) is arranged on the side wall of the motor oil pump device (3), one end of the oil supply joint (36) is connected to the oil pump (39), and the oil pump (39) is used for pumping oil in the oil tank (2) out through the oil supply joint (36);
the air bag (1) is installed in the cavity of the oil tank (2), a leather bag nozzle (13) of the air bag (1) is installed in the second installation hole through a connecting nut (6), gas is filled in the air bag (1), and the air bag (1) expands or contracts to balance the pressure in the oil tank (2).
2. The hydraulic pump station with closed pressure tank adapted for outdoor environment according to claim 1, characterized in that said electric motor oil pump means (3) comprises: a motor (31), a mounting block (37), and a coupling (38);
the mounting block (37) is mounted at the top of the oil tank (2) through a connecting bolt (5), a through hole is formed in the center of the mounting block (37), and the coupler (38) is mounted in the through hole;
the motor (31) is arranged above the mounting block (37) through a motor mounting screw (32), and a rotating shaft of the motor (31) is connected to one end of the coupler (38);
the oil pump (39) is arranged below the mounting block (37) through an oil pump mounting screw (310), the rotating shaft of the oil pump (39) is connected with the other end of the coupler (38),
wherein the electric motor (31) is used for driving the oil pump (39) to rotate.
3. The hydraulic pump station provided with a closed pressure oil tank and applicable to outdoor environment as claimed in claim 2, wherein an oil supply channel and an oil return channel are arranged inside the mounting block (37), one end of the oil supply channel and one end of the oil return channel are arranged on the side wall of the mounting block (37), the other end of the oil supply channel and the other end of the oil return channel are arranged on the bottom of the mounting block (37), the oil supply joint (36) is arranged at one end of the oil supply channel, the oil supply joint (36) is arranged on the side wall of the mounting block (37), and the motor oil pump device (3) further comprises: an oil return joint (35) and a solenoid valve (312);
the oil return joint (35) is arranged at one end of the oil return channel, and the oil return joint (35) is arranged on the side wall of the mounting block (37);
the electromagnetic valve (312) is arranged on the oil supply channel, and the electromagnetic valve (312) is used for conducting or sealing the oil supply channel.
4. The hydraulic pump station provided with a closed pressure oil tank and suitable for outdoor environment as claimed in claim 2, wherein the mounting block (37) is further provided with an oil overflow hole, and the electric motor oil pump device (3) further comprises: a relief valve (34);
the overflow valve (34) is arranged above the oil overflow hole.
5. The hydraulic pump station with closed pressure oil tank for outdoor environment as claimed in claim 2, wherein the inside of the mounting block (37) is further provided with an exhaust channel, one end of the exhaust channel is arranged on the side wall of the mounting block (37), the other end of the exhaust channel is arranged at the bottom of the mounting block (37), and the electric oil pump device (3) further comprises: a pressure measurement exhaust connection (311);
the pressure measuring exhaust joint (311) is arranged at one end of the exhaust channel, and the pressure measuring exhaust joint (311) is arranged on the side wall of the mounting block (37).
6. The hydraulic pump station provided with a closed pressure oil tank and adapted for outdoor environment according to any of the claims 1 to 5, characterized in that the air bag (1) comprises: a leather bag (11), a sealing ring (12) and an inflation valve (14);
the leather bag (11) is arranged in a cavity of the oil tank (2), and the sealing ring (12) is arranged between the bottom of the leather bag (11) and the upper end of the leather bag nozzle (13);
the inflation valve (14) is installed at the lower end of the leather bag connector (13), and the inflation valve (14) is used for conducting or sealing the leather bag connector (13).
7. The hydraulic pump station with closed pressure tank adapted for outdoor environment according to claim 6, characterized in that said air bag (1) further comprises: a protective cover (15);
the protective cover (15) is coated on the outer sides of the inflation valve (14) and the leather bag connector (13).
8. The hydraulic pump station equipped with a hermetic pressure tank, adapted for outdoor environments, according to any of claims 1 to 5, characterized in that the tank (2) comprises: the leather bag comprises a connecting plate (21), a cylinder body (22), a bottom plate (24) and a leather bag mounting joint (25);
the connecting plate (21) is arranged at the top of the cylinder (22), the first mounting hole is formed in the connecting plate (21), the bottom plate (24) is arranged at the bottom of the cylinder (22), and the second mounting hole is formed in the bottom plate (24);
the leather bag mounting joint (25) is mounted in the second mounting hole, and the leather bag mounting joint (25) is matched with the connecting nut (6) to mount the leather bag connecting nozzle (13) of the air bag (1).
9. The hydraulic pump station with a closed pressure oil tank suitable for outdoor environment as claimed in claim 8, wherein the edge above the connecting plate (21) is provided with a groove, the hydraulic pump station further comprises: a sealing strip (4);
the sealing strip (4) is installed in the groove, and the sealing strip (4) is used for sealing between the oil tank (2) and the motor oil pump device (3).
10. The hydraulic pump station provided with a sealed pressure tank and adapted for use in an outdoor environment according to claim 8, characterized in that the tank (2) further comprises: an oil injection and drainage joint (23);
the oil injection and drainage connector (23) is arranged on the side wall of the bottom of the barrel (22), and the oil injection and drainage connector (23) is used for injecting or discharging oil into the barrel (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220369750.6U CN216922660U (en) | 2022-02-23 | 2022-02-23 | Hydraulic pump station provided with closed pressure oil tank and suitable for outdoor environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220369750.6U CN216922660U (en) | 2022-02-23 | 2022-02-23 | Hydraulic pump station provided with closed pressure oil tank and suitable for outdoor environment |
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| Publication Number | Publication Date |
|---|---|
| CN216922660U true CN216922660U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220369750.6U Active CN216922660U (en) | 2022-02-23 | 2022-02-23 | Hydraulic pump station provided with closed pressure oil tank and suitable for outdoor environment |
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| CN (1) | CN216922660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108475A (en) * | 2023-06-14 | 2023-11-24 | 湖北盛达动力科技有限公司 | Oil pump |
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2022
- 2022-02-23 CN CN202220369750.6U patent/CN216922660U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108475A (en) * | 2023-06-14 | 2023-11-24 | 湖北盛达动力科技有限公司 | Oil pump |
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