Pneumatic pressurization type hydraulic station of separated oil tank

Abstract

The utility model discloses a pneumatic pressurizing type hydraulic station with a separated oil tank, belongs to the technical field of hydraulic stations, and solves the problem that the service life of precision equipment is affected after hydraulic oil is polluted to different degrees due to the fact that a plurality of branch oil ways of the existing hydraulic station share the oil tank. The pneumatic booster pump comprises an oil tank and a pneumatic booster pump body and further comprises a first electromagnetic directional valve, two air source connectors of the pneumatic booster pump body are connected with the first electromagnetic directional valve, the first electromagnetic directional valve is connected with a compressed air source, a partition plate dividing the oil tank into two independent oil cavities is arranged in the oil tank, and two oil suction ports of the pneumatic booster pump body are communicated with the two oil cavities respectively. Two oil outlets of the pneumatic booster pump are both communicated with the execution oil cylinder through an oil supply pipeline, and the oil supply pipeline comprises a pressure reducing valve and a second electromagnetic reversing valve. According to the pneumatic pressurization type hydraulic station, energy consumption is effectively reduced, the environmental protection performance is improved, and meanwhile normal operation of all the execution oil cylinders can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic station technology, and more specifically, it relates to a pneumatic booster hydraulic station with a partitioned oil tank. Background Technology

[0002] A hydraulic power unit is a hydraulic source device or a hydraulic device including control valves, consisting of a hydraulic pump, a drive motor, an oil tank, a directional valve, a throttle valve, and a relief valve. It is widely used in lathes and machining centers for hydraulic control of fixture cylinders, precision rotary tables, etc.

[0003] Traditional hydraulic power units typically use electric pumps to supply oil to the hydraulic circuits. However, electric pumps have relatively high energy consumption and are gradually being phased out. Through research and analysis, a patent with authorization announcement number CN 214741884U discloses a pneumatic booster pump station. The upper end of the oil tank is fixedly equipped with a pneumatic booster pump, the right side of which is fixedly connected to an air source. An oil gauge is fixedly installed on the pneumatic booster pump, a pneumatic directional valve is fixedly installed at the upper end of the pump, and a solenoid valve is fixedly installed on the left side. This design features a small oil tank, saving space and facilitating installation. Utilizing air drive for booster pump station operation, it is energy-saving, low-noise, easy to adjust, has a wide range of applications, automatically maintains pressure, saves energy, and is more space-saving, energy-saving, and fuel-efficient than conventional hydraulic power units. It is also more environmentally friendly, safer, and more flexible in application.

[0004] In existing hydraulic power units, pneumatic booster pumps are used to supply oil to the hydraulic circuit. While this reduces energy consumption and is more environmentally friendly, the pneumatic booster pump directly supplies oil to all the actuator cylinders. However, in practical applications, different actuator cylinders have different requirements for hydraulic oil quality. Sharing hydraulic oil from the same tank is detrimental to the control of equipment operating accuracy. For example, when a machining center rotary table is equipped with hydraulic fixtures, gaps or aging seals in the moving parts of the cylinders on the fixtures can carry impurities back to the tank after prolonged operation. Since the precision rotary tables of machining centers have high requirements for the quality of hydraulic oil in their actuator cylinders, using hydraulic oil from the same tank can easily affect the working accuracy and stability of the machining center, and may even cause damage.

[0005] Therefore, there is an urgent need to design a pneumatic booster hydraulic station with a partitioned oil tank to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art. Its purpose is to provide a pneumatic booster hydraulic station with a partitioned oil tank, which can effectively reduce energy consumption, improve environmental performance, and ensure the normal operation of each actuator cylinder.

[0007] The technical solution of this utility model is as follows: a pneumatic booster hydraulic station with a divided oil tank includes an oil tank and a pneumatic booster pump, and also includes a first electromagnetic directional valve. The pneumatic booster pump is a double-headed pneumatic pump with two oil inlets, two oil outlets, and two air source interfaces. The two air source interfaces of the pneumatic booster pump are connected to the first electromagnetic directional valve, and the first electromagnetic directional valve is connected to a compressed air source. The oil tank is provided with a partition that divides it into two independent oil chambers. The two oil inlets of the pneumatic booster pump are respectively connected to the two oil chambers. The two oil outlets of the pneumatic booster pump are both connected to the actuator cylinder through an oil supply pipeline. The oil supply pipeline includes a pressure reducing valve and a second electromagnetic directional valve. The oil outlet of the pneumatic booster pump, the pressure reducing valve, the second electromagnetic directional valve, and the actuator cylinder are connected in sequence. An accumulator is also provided on the pipeline between the pneumatic booster pump and the pressure reducing valve.

[0008] As a further improvement, an oil-water separator is also provided on the pipeline between the first electromagnetic reversing valve and the compressed air source.

[0009] Furthermore, pressure gauges are also provided on the pipelines between the accumulator and the pressure reducing valve, and between the pressure reducing valve and the second solenoid directional valve.

[0010] Furthermore, each of the two corresponding oil chambers in the oil tank is equipped with a level gauge.

[0011] Furthermore, the pneumatic booster pump includes a cylinder liner, a cylinder piston, an oil cylinder liner, and an oil cylinder piston. There are two oil cylinder liners, which are fixed on both sides of the cylinder liner. The cylinder piston is slidably installed inside the cylinder liner. Each oil cylinder liner has one oil cylinder piston slidably installed inside it, and each oil cylinder piston is connected to the cylinder piston via a piston rod. The two air source ports are located on both sides of the cylinder piston and are connected to the cylinder liner. The two oil suction ports are located at the bottom of the side of the two oil cylinder pistons away from the cylinder liner and are connected to the oil cylinder liner. The two oil outlet ports are located at the top of the side of the two oil cylinder pistons away from the cylinder liner and are connected to the oil cylinder liner. One-way valves are provided on the pipelines corresponding to the two oil suction ports and the oil outlet ports.

[0012] Furthermore, the pneumatic booster pump, the first electromagnetic reversing valve, the pressure reducing valve, the second electromagnetic reversing valve, and the accumulator are all integrated and installed on the top of the oil tank.

[0013] Furthermore, a soundproof box is provided on the top of the oil tank, and the first electromagnetic reversing valve and the pneumatic booster pump are both located inside the soundproof box.

[0014] Furthermore, the fuel tank is mounted on a movable trolley.

[0015] Furthermore, an oil collection trough is provided on the top outer edge of the oil tank.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] 1. The pneumatic booster hydraulic station of this utility model uses a pneumatic booster pump to supply oil to the actuator cylinders, effectively reducing energy consumption and improving environmental performance. At the same time, the oil tank is set as a partitioned structure, and a double-headed pneumatic pump with two oil inlet and two oil outlet is used. The first electromagnetic reversing valve controls the double-headed pneumatic pump to switch the operation, so that hydraulic oil is drawn in from the two oil inlet and flows to different oil supply pipelines through the two oil outlets to supply oil to different actuator cylinders. This allows different actuator cylinders to use different quality hydraulic oil, which can ensure the normal operation of each actuator cylinder.

[0019] 2. The pneumatic booster hydraulic station of this utility model also has an accumulator installed on the oil supply pipeline. When the pneumatic booster pump is working and pumping oil, the accumulator also stores energy at the same time. When the pneumatic booster pump reverses direction, the accumulator can provide energy to the actuator cylinder, so that the corresponding actuator cylinder can continuously provide stable power, thereby enabling the equipment to operate continuously and reliably. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 3 This is a side view of the structure of this utility model;

[0023] Figure 4 This is a hydraulic schematic diagram of the present invention in use;

[0024] Figure 5 This is a simplified diagram of the pneumatic booster pump in this utility model.

[0025] Among them: 1-oil tank, 2-pneumatic booster pump, 3-first solenoid directional valve, 4-diaphragm, 5-actuator cylinder, 6-pressure reducing valve, 7-second solenoid directional valve, 8-accumulator, 9-oil-water separator, 10-pressure gauge, 11-level gauge, 12-silent box, 13-oil collection tank, 201-oil suction port, 202-oil outlet, 203-air source interface, 204-cylinder liner, 205-cylinder piston, 206-cylinder liner, 207-cylinder piston, 208-piston rod, 209-one-way valve. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0027] See Figure 1-5 This utility model discloses a pneumatic booster hydraulic station with a partitioned oil tank, comprising an oil tank 1 and a pneumatic booster pump 2, and a first electromagnetic reversing valve 3. The pneumatic booster pump 2 is a double-headed pneumatic pump with two oil inlet ports 201, two oil outlet ports 202, and two air source interfaces 203. The two air source interfaces 203 of the pneumatic booster pump 2 are connected to the first electromagnetic reversing valve 3, which is connected to a compressed air source to provide compressed air to the pneumatic booster pump 2. A partition 4 is provided inside the oil tank 1 to divide it into two independent oil chambers, and different qualities of oil are added to the two oil chambers. The hydraulic oil is supplied by two suction ports 201 of the pneumatic booster pump 2, which are respectively connected to two oil chambers. The two outlet ports 202 of the pneumatic booster pump 2 are connected to the actuator cylinder 5 through the oil supply pipeline, so that different actuator cylinders can use hydraulic oil of different quality. The oil supply pipeline includes a pressure reducing valve 6 and a second solenoid directional valve 7. The outlet port 202 of the pneumatic booster pump 2, the pressure reducing valve 6, the second solenoid directional valve 7, and the actuator cylinder 5 are connected in sequence. An accumulator 8 is also provided on the pipeline between the pneumatic booster pump 2 and the pressure reducing valve 7. The accumulator 8 can serve as a second energy supply station to provide stable energy to the actuator cylinder 5.

[0028] This utility model discloses a pneumatic booster hydraulic station, which uses a pneumatic booster pump 2 to supply oil to the actuator cylinder 5, effectively reducing energy consumption and improving environmental performance. At the same time, the oil tank 1 is set as a partitioned structure, and a double-headed pneumatic pump with two oil inlets 201 and two oil outlets 202 is used. The first electromagnetic reversing valve 3 controls the double-headed pneumatic pump to switch the operation, so that hydraulic oil is drawn in from the two oil inlets 201 and flows to different oil supply pipelines through the two oil outlets 202 to supply oil to different actuator cylinders. This allows different actuator cylinders to use hydraulic oil of different quality, which can ensure the normal operation of each actuator cylinder.

[0029] Preferably, an oil-water separator 9 is also provided on the pipeline between the first electromagnetic reversing valve 3 and the compressed air source to purify the air source and extend the service life of the pneumatic booster pump 2.

[0030] Preferably, a pressure gauge 10 is also provided on the pipeline between the accumulator 8 and the pressure reducing valve 6, and between the pressure reducing valve 6 and the second solenoid directional valve 7, to monitor the pressure in the pipeline in real time.

[0031] Preferably, each of the two corresponding oil chambers in the oil tank 1 is equipped with a level gauge 11 to monitor the oil level in the chamber in real time. Each oil chamber is equipped with a filler port and a filler cap on the top of the oil tank 1 for easy addition of hydraulic oil.

[0032] Preferred, such as Figure 5As shown, the pneumatic booster pump 2 includes a cylinder liner 204, a cylinder piston 205, a hydraulic cylinder liner 206, and a hydraulic cylinder piston 207. There are two hydraulic cylinder liners 206, fixed to both sides of the cylinder liner 204. The cylinder piston 205 is slidably mounted inside the cylinder liner 204, dividing the cylinder liner 204 into two air chambers. Each hydraulic cylinder liner 206 has a hydraulic cylinder piston 207 slidably mounted inside it, and each hydraulic cylinder piston 207 is connected to the cylinder piston 205 via a piston rod 208. Two air source ports 203 are located on both sides of the cylinder piston 205 and communicate with the cylinder liner 204, i.e., two air source ports 203... 03 is connected to an air chamber. The two oil suction ports 201 are located at the bottom of the side of the piston 207 of the two cylinders away from the cylinder liner 204 and are connected to the cylinder liner 206. The two oil discharge ports 202 are located at the top of the side of the piston 207 of the two cylinders away from the cylinder liner 204 and are connected to the cylinder liner 206. The pipelines corresponding to the two oil suction ports 201 and the oil discharge ports 202 are equipped with one-way valves 209. The one-way valve 209 corresponding to the oil suction port 201 is defined as allowing hydraulic oil to flow into the cylinder liner 206, and the one-way valve 209 corresponding to the oil discharge port 202 is defined as allowing hydraulic oil to flow out of the cylinder liner 206.

[0033] The pneumatic booster pump 2 in this embodiment is a dual-head pneumatic pump. During operation, the intake is switched by the first electromagnetic reversing valve 3. When the first electromagnetic reversing valve 3 switches to the intake of the air chamber on the left side of the cylinder liner 204, both cylinder pistons 207 move to the right. The air chamber on the right side of the cylinder liner 204 exits through the air source interface on the right side, the oil suction port 201 corresponding to the left cylinder liner 206 draws in oil, and the oil outlet port 202 corresponding to the right cylinder liner 206 exits oil. When the first electromagnetic reversing valve 3 switches to the intake of the air chamber on the right side of the cylinder liner 204, both cylinder pistons 207 move to the left side. The air chamber on the left side of the cylinder liner 204 exits through the air source interface on the left side, the oil suction port 201 corresponding to the right cylinder liner 206 draws in oil, and the oil outlet port 202 corresponding to the left cylinder liner 206 exits oil, thus realizing alternating oil suction and supply. The pneumatic booster pump 2 integrates two oil inlet and outlet ports, which can greatly reduce its size, space occupation, and cost.

[0034] Preferably, the pneumatic booster pump 2, the first solenoid directional valve 3, the pressure reducing valve 6, the second solenoid directional valve 7, and the accumulator 8 are all integrated and installed on the top of the oil tank 1, making the entire hydraulic station structure more compact and further reducing the space occupied by the hydraulic station.

[0035] Preferably, a soundproof enclosure 12 is provided on the top of the oil tank 1. The first electromagnetic reversing valve 3 and the pneumatic booster pump 2 are both located inside the soundproof enclosure 12. Since the first electromagnetic reversing valve 3 frequently reverses its operation, surrounding it with the soundproof enclosure 12 can effectively reduce noise. It should be noted that a cooling fan can be installed inside the soundproof enclosure 12, and the air outlet of the cooling fan is connected to the outside of the soundproof enclosure 12 through a pipe to achieve the purpose of heat dissipation.

[0036] Preferably, the oil tank 1 is mounted on a movable trolley, which makes it easy to move it to a designated place for use, and also makes it easy to pull it out from the side of the equipment for maintenance, making operation more convenient.

[0037] Preferably, an oil collection trough 13 is provided on the top outer edge of the oil tank 1. If hydraulic oil leaks from the pipeline, it can flow along the top surface of the oil tank 1 into the oil collection trough 13, avoiding environmental pollution. A plug can be threaded to the bottom of the oil collection trough 13 for easy cleaning; the oil collection trough 13 can also be detachably installed on the oil tank 1, which also facilitates cleaning.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A pneumatic booster hydraulic station with a compartmented oil tank, comprising an oil tank (1) and a pneumatic booster pump (2), characterized in that, It also includes a first electromagnetic reversing valve (3). The pneumatic booster pump (2) is a double-headed pneumatic pump with two oil inlets (201), two oil outlets (202), and two air source interfaces (203). The two air source interfaces (203) of the pneumatic booster pump (2) are connected to the first electromagnetic reversing valve (3). The first electromagnetic reversing valve (3) is connected to a compressed air source. The oil tank (1) is provided with a partition (4) that divides it into two independent oil chambers. The two air source interfaces (203) of the pneumatic booster pump (2) are connected to the first electromagnetic reversing valve (3). Each oil suction port (201) is connected to two oil chambers respectively. The two oil outlets (202) of the pneumatic booster pump (2) are connected to the actuator cylinder (5) through the oil supply pipeline. The oil supply pipeline includes a pressure reducing valve (6) and a second electromagnetic reversing valve (7). The oil outlet (202), pressure reducing valve (6), second electromagnetic reversing valve (7), and actuator cylinder (5) of the pneumatic booster pump (2) are connected in sequence. An accumulator (8) is also provided on the pipeline between the pneumatic booster pump (2) and the pressure reducing valve (6).

2. The pneumatic booster hydraulic station with a partitioned oil tank according to claim 1, characterized in that, An oil-water separator (9) is also provided on the pipeline between the first electromagnetic reversing valve (3) and the compressed air source.

3. The pneumatic booster hydraulic station with a partitioned oil tank according to claim 1, characterized in that, Pressure gauges (10) are also provided on the pipelines between the accumulator (8) and the pressure reducing valve (6), and between the pressure reducing valve (6) and the second solenoid directional valve (7).

4. A pneumatic booster hydraulic station with a partitioned oil tank according to claim 1, characterized in that, The two corresponding oil chambers in the oil tank (1) are each equipped with a level gauge (11).

5. A pneumatic booster hydraulic station with a partitioned oil tank according to claim 1, characterized in that, The pneumatic booster pump (2) includes a cylinder liner (204), a cylinder piston (205), a hydraulic cylinder liner (206), and a hydraulic cylinder piston (207). There are two hydraulic cylinder liners (206), each fixed to one side of the cylinder liner (204). The cylinder piston (205) is slidably mounted within the cylinder liner (204). Each hydraulic cylinder liner (206) has one hydraulic cylinder piston (207) slidably mounted within it, and each hydraulic cylinder piston (207) is connected to the cylinder piston (205) via a piston rod (208). The source interface (203) is located on both sides of the cylinder piston (205) and is connected to the cylinder liner (204). The two oil suction ports (201) are located at the bottom of the side of the two cylinder pistons (207) away from the cylinder liner (204) and are connected to the cylinder liner (206). The two oil outlet ports (202) are located at the top of the side of the two cylinder pistons (207) away from the cylinder liner (204) and are connected to the cylinder liner (206). A one-way valve (209) is provided on the pipelines corresponding to the two oil suction ports (201) and the two oil outlet ports (202).

6. A pneumatic booster hydraulic station with a partitioned oil tank according to any one of claims 1-5, characterized in that, The pneumatic booster pump (2), the first electromagnetic reversing valve (3), the pressure reducing valve (6), the second electromagnetic reversing valve (7), and the accumulator (8) are all integrated and installed on the top of the oil tank (1).

7. A pneumatic booster hydraulic station with a partitioned oil tank according to claim 6, characterized in that, The oil tank (1) is equipped with a soundproof box (12) on top, and the first electromagnetic reversing valve (3) and the pneumatic booster pump (2) are both located inside the soundproof box (12).

8. A pneumatic booster hydraulic station with a partitioned oil tank according to claim 6, characterized in that, The oil tank (1) is mounted on a movable trolley.

9. A pneumatic booster hydraulic station with a partitioned oil tank according to claim 6, characterized in that, The oil tank (1) is provided with an oil collection trough (13) on the top outer edge.

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