Air pressure type oil storage and supply device

Abstract

An air pressure type oil storage and supply device comprises a tank body and a pressure supply unit. A piston is slidably mounted in the tank body, and the piston is separated into a liquid cavity and an air cavity in the tank body; the liquid cavity is provided with a first air inlet, an oil inlet and an oil outlet which are communicated with the outside and can be opened and closed independently, and the air cavity is provided with an exhaust port and a second air inlet which are communicated with the outside and can be opened and closed independently; the pressure supply unit is communicated with the first air inlet and the second air inlet so as to provide air for the liquid cavity or the air cavity to maintain air pressure. Under the conventional condition, the liquid cavity and the air cavity are both in a vacant state, and during oil storage, the internal air pressure of the vacant liquid cavity is changed through the pressure supply unit, so that the oil inlet can adsorb external oil into the liquid cavity for storage; when oil is supplied, the internal air pressure of the empty liquid cavity is changed through the pressure supply unit so as to drive the piston to move upwards, and then oil in the liquid cavity is discharged from the oil outlet; by means of the structural design, the size and the manufacturing cost can be reduced, constant-pressure oil conveying can be achieved, and the oil outlet amount can be accurately controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil supply equipment, in particular to a gas pressure type oil storage and supply device. Background Art

[0002] The oil storage and supply device is a device that integrates oil storage and oil transportation. The existing oil storage and supply device is mainly composed of a tank body and two suction pumps. One suction pump is used to pump oil into the tank body for storage, and the other suction pump is used to transport the oil smoke in the tank body to the oil-using machine or equipment for lubrication, fuel replenishment and other operations. However, it is found in actual use that the use of two suction pumps will not only increase the volume and cost, but also the oil delivery pressure of the suction pump is unstable, it is difficult to accurately control the oil output, and the user experience is poor. Utility Model Content

[0003] Technical issues solved

[0004] The utility model provides a pneumatic oil storage and supply device, which can not only reduce the volume and the cost of manufacturing, but also can transport oil at a constant pressure and accurately control the oil output.

[0005] Technical Solution

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pneumatic oil storage and supply device comprises a tank body and a pressure supply unit; a piston is slidably mounted inside the tank body, and the piston isolates a liquid cavity and an air cavity inside the tank body; the liquid cavity is provided with a first air inlet, an oil inlet and an oil outlet which are connected to the outside and can be opened and closed independently, and the air cavity is provided with an exhaust port and a second air inlet which are connected to the outside and can be opened and closed independently; the pressure supply unit connects the first air inlet and the second air inlet to respectively provide gas to the liquid cavity or the air cavity to maintain air pressure.

[0008] Preferably, the first air inlet, the oil inlet, the oil outlet, the exhaust port and the second air inlet are all extended through pipelines, and corresponding pipelines are equipped with switch valves for opening and closing.

[0009] Preferably, the pressure supply unit comprises an air compressor and a pressure regulating valve, the air compressor is connected to the pressure regulating valve, and the pressure regulating valve is connected to the first air inlet and the second air inlet.

[0010] Preferably, the pressure supply unit further includes an air storage tank, and the air compressor is connected to the pressure regulating valve via the air storage tank.

[0011] Preferably, a monitoring unit is further included, which includes an oil pressure sensor and an air pressure sensor electrically connected to the air compressor, the oil pressure sensor is used to monitor the oil pressure inside the liquid cavity, and the air pressure sensor is used to monitor the air pressure inside the air cavity.

[0012] Preferably, the monitoring unit further comprises a liquid level sensor electrically connected to the air compressor, and the liquid level sensor is used to monitor the amount of oil inside the liquid cavity.

[0013] Preferably, the monitoring unit further comprises a displacement sensor electrically connected to the air compressor, and the displacement sensor is used to monitor the displacement of the piston.

[0014] Preferably, a sliding rod is provided on the piston, and the sliding rod can slidably penetrate the air cavity to the outside, and the connection between the sliding rod and the air cavity is sealed, and the displacement sensor is installed in the outside and is used to monitor the displacement of the sliding rod.

[0015] Beneficial Effects

[0016] The utility model provides a pneumatic oil storage and supply device, which designs a slidable piston in the tank body to isolate the liquid chamber and the air chamber, so that the size of the liquid chamber can be changed to store more oil; the pressure supply unit is designed to change the internal air pressure of the liquid chamber and the air chamber, so that the oil inlet can absorb the external oil into the liquid chamber, and the oil outlet can discharge the oil in the liquid chamber to the outside; compared with the prior art, the present application realizes tank oil storage and oil supply through a pressure supply unit, has a simple structure, can reduce the cost and volume, and improves portability; and through the air pressure control method, it can also realize constant pressure oil delivery and accurately control the oil output, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 The overall structural diagram of the utility model is shown.

[0019] In the figure: 1 tank body, 10 piston, 100 sliding rod, 11 liquid chamber, 111 first air inlet, 112 oil inlet, 113 oil outlet, 12 air chamber, 121 exhaust port, 122 second air inlet, 1f switch valve, 2 pressure supply unit, 21 air compressor, 22 pressure regulating valve, 23 air storage tank, 3 monitoring unit, 31 oil pressure sensor, 32 air pressure sensor, 33 liquid level sensor, 34 displacement sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See attached Figure 1 A pneumatic oil storage and supply device comprises a tank body 1 and a pressure supply unit 2; a piston 10 is slidably mounted inside the tank body 1, and the piston 10 is separated into a liquid chamber 11 and an air chamber 12 inside the tank body 1; the liquid chamber 11 is provided with a first air inlet 111, an oil inlet 112 and an oil outlet 113 which are connected to the outside and can be opened and closed independently, and the air chamber 12 is provided with an exhaust port 121 and a second air inlet 122 which are connected to the outside and can be opened and closed independently; the pressure supply unit 2 is connected with the first air inlet 111 and the second air inlet 122 to respectively supply gas to the liquid chamber 11 or the air chamber 12 to maintain the air pressure.

[0022] Specifically, under normal circumstances, the liquid cavity 11 and the gas cavity 12 are both in an empty state, and the first air inlet 111, the oil inlet 112, the oil outlet 113, the exhaust port 121 and the second air inlet 122 are all in a closed state.

[0023] When storing oil for the first time, open the first air inlet 111 and start the pressure supply unit 2 to supply air to the empty liquid chamber 11 so that a pressure difference is formed inside and outside the liquid chamber 11. Then open the oil inlet 112 and connect the external oil to pump the oil into the liquid chamber 11 for storage.

[0024] When supplying oil for the first time, close the first air inlet 111 and the oil inlet 112, open the second air inlet 122 and the oil outlet 113, start the pressure supply unit 2 to supply air to the empty air cavity 12, and the gas squeezes the piston 10 upward in the tank body 1 to reduce the space of the liquid cavity 11 and squeeze the oil, so that the oil in the liquid cavity 11 is discharged to the outside through the oil outlet 113.

[0025] After the initial oil storage, the air pressure inside the liquid chamber 11 is stable. Therefore, when supplying oil again, it is only necessary to open the exhaust port 121 to discharge the gas inside the air chamber 12, so that the air pressure of the liquid chamber 11 is greater than the air pressure of the air chamber 12. In addition, the retained oil itself has a certain weight. At this time, the oil inlet 112 can be opened to automatically supply oil; and when supplying oil again, the exhaust port 121 and the oil inlet 112 are closed, and the second air inlet 122 and the oil outlet 113 are opened, and then the air chamber 12 is supplied with air again through the pressure supply unit 2.

[0026] In summary, the utility model designs a slidable piston 10 in the tank body 1 to isolate the liquid chamber 11 and the air chamber 12, so that the size of the liquid chamber 11 can be changed to store more oil; the pressure supply unit 2 is designed to change the internal air pressure of the liquid chamber 11 and the air chamber 12, so that the oil inlet 112 can absorb the external oil into the liquid chamber 11, and the oil outlet 113 can discharge the oil in the liquid chamber 11 to the outside; compared with the prior art, the present application realizes oil storage and oil supply in the tank body 1 through a pressure supply unit 2, and has a simple structure, can reduce the cost and volume, and improve portability; and through air pressure control, it can also achieve constant pressure oil delivery and accurately control the oil output, thereby improving the user experience.

[0027] See attached Figure 1 The first air inlet 111, the oil inlet 112, the oil outlet 113, the exhaust port 121 and the second air inlet 122 are all extended through pipelines, and the corresponding pipelines are equipped with switch valves 1f for opening and closing.

[0028] Specifically, the pipeline extension design facilitates the arrangement of the oil passages and the air passages, making the overall structure more reasonable and ensuring that the oil can be normally extracted and transported to the designated location; and the design of each switch valve 1f is to facilitate the independent opening and closing of the first air inlet 111, the oil inlet 112, the oil outlet 113, the exhaust port 121 and the second air inlet 122.

[0029] The switch valve 1f may be a conventional mechanical valve that is manually controlled by a worker, or may be an electric valve that is directly controlled by a signal, and this is not limited in the present invention.

[0030] See attached Figure 1 The pressure supply unit 2 includes an air compressor 21 and a pressure regulating valve 22 . The air compressor 21 is connected to the pressure regulating valve 22 , and the pressure regulating valve 22 is connected to the first air inlet 111 and the second air inlet 122 .

[0031] Among them, the air compressor 21 is a mechanical device for compressing gas, and its main function is to compress the air in the atmosphere into a smaller volume, thereby generating high-pressure air; and the pressure regulating valve 22 is connected to the air compressor 21 to further adjust the pressure of the high-pressure air through the first air inlet 111 and the second air inlet 122, thereby controlling the air pressure in the liquid cavity 11 or the air cavity 12, facilitating oil storage and accurately controlling the oil output.

[0032] See attached Figure 1 The pressure supply unit 2 also includes an air storage tank 23 , and the air compressor 21 is connected to the pressure regulating valve 22 through the air storage tank 23 .

[0033] Specifically, after starting the air compressor 21, the high-pressure air provided first enters the air tank 23 for storage. After the gas in the air tank 23 reaches the required set air pressure, the required air pressure is obtained by regulating through the pressure regulating valve 22, and then the first air inlet 111 or the second air inlet 122 is opened, so that the liquid cavity 11 or the air cavity 12 has the corresponding air pressure value.

[0034] Therefore, the design of the gas storage tank 23 can buffer the high-pressure gas, giving the user a certain reaction time, ensuring that the user can more accurately control the pressure regulating valve 22, so that the air pressure value inside the liquid cavity 11 or the air cavity 12 is more stable.

[0035] See attached Figure 1 The utility model also includes a monitoring unit 3, which includes an oil pressure sensor 31 and an air pressure sensor 32 electrically connected to the air compressor 21. The oil pressure sensor 31 is used to monitor the oil pressure inside the liquid cavity 11, and the air pressure sensor 32 is used to monitor the air pressure inside the air cavity 12.

[0036] Specifically, oil pressure is generated after the oil enters the liquid chamber 11. If the oil pressure is unstable, the oil pressure and displacement discharged from the oil outlet 113 will be too small or too large. The design of the oil pressure sensor 31 can detect the oil pressure value inside the liquid chamber 11 and feed it back to the air compressor 21; therefore, after the oil is stored, the user can first close the oil inlet 112, and then control the operation of the air compressor 21 according to the actual required oil outlet pressure and displacement, so that the oil pressure value inside the liquid chamber 11 is maintained within an appropriate range.

[0037] Similarly, the design of the air pressure sensor 32 can detect the air pressure value inside the liquid chamber 11 and feed it back to the air compressor 21; when supplying oil, the first air inlet 111 can be opened or closed, and the air pressure sensor 32 only needs to ensure that the monitored air pressure value is greater than the oil pressure value monitored by the oil pressure sensor 31, so that the piston 10 can smoothly squeeze the oil in the liquid chamber 11 and discharge it from the oil outlet 113. Finally, the operation of the air compressor 21 is controlled according to the actual required oil outlet pressure and displacement, so that the air pressure value inside the air chamber 12 is maintained within an appropriate range.

[0038] In summary, the coordinated use of the air compressor 21, the oil pressure sensor 31 and the air pressure sensor 32 can assist the user in controlling the pressure values ​​inside the liquid cavity 11 and the air cavity 12, facilitate setting the corresponding air pressure to accurately control the oil outlet pressure and oil discharge volume, and improve the user experience.

[0039] See attached Figure 1 The monitoring unit 3 also includes a liquid level sensor 33 electrically connected to the air compressor 21 , and the liquid level sensor 33 is used to monitor the oil amount inside the liquid cavity 11 .

[0040] Specifically, during the oil storage process, the liquid level sensor 33 can control the start and stop of the air compressor 21 according to the amount of oil in the liquid chamber 11, so as to avoid cylinder explosion caused by excessive oil in the liquid chamber 11; similarly, during the oil supply process, the liquid level sensor 33 can control the start and stop of the air compressor 21 according to the amount of oil in the liquid chamber 11, so as to avoid useless work caused by insufficient oil in the liquid chamber 11.

[0041] See attached Figure 1 The monitoring unit 3 also includes a displacement sensor 34 electrically connected to the air compressor 21 , and the displacement sensor 34 is used to monitor the displacement of the piston 10 .

[0042] Specifically, during the oil storage or supply process, the displacement sensor 34 can determine the actual oil storage amount or oil supply amount according to the displacement of the piston 10, and then control the start and stop of the air compressor 21; the displacement sensor 34 is used in conjunction with the liquid level sensor 33, which makes it convenient for the user to know the amount of oil in the liquid chamber 11, and has facilitated more accurate control of the oil output.

[0043] See attached Figure 1 A slide rod 100 is provided on the piston 10 , and the slide rod 100 can slidably penetrate the air cavity 12 to the outside, and the connection between the slide rod 100 and the air cavity 12 is sealed. The displacement sensor 34 is installed in the outside and is used to monitor the displacement of the slide rod 100 .

[0044] Among them, since the sliding rod 100 is extended to the outside, the displacement sensor 34 can be installed outside, which improves the convenience of installation. The displacement sensor 34 obtains the displacement of the piston 10 by monitoring the displacement of the sliding rod 100, and then determines the actual oil storage amount or oil supply amount; and the connection between the sliding rod 100 and the air cavity 12 is sealed to avoid air leakage of the air cavity 12. There are various related sealing means, such as installing a sealing ring, which is not limited in the present invention.

[0045] It should also be noted that, although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application.

Claims

1. A pneumatic oil storage and supply device, characterized in that: include: A tank body (1), wherein a piston (10) is slidably mounted inside the tank body (1), and the piston (10) is separated into a liquid chamber (11) and an air chamber (12) inside the tank body (1); the liquid chamber (11) is provided with a first air inlet (111), an oil inlet (112), and an oil outlet (113) which are connected to the outside and can be opened and closed independently, and the air chamber (12) is provided with an air outlet (121) and a second air inlet (122) which are connected to the outside and can be opened and closed independently; A pressure supply unit (2), the pressure supply unit (2) being connected to the first air inlet (111) and the second air inlet (122) so as to respectively supply gas to the liquid cavity (11) or the gas cavity (12) to maintain gas pressure.

2. A pneumatic oil storage and supply device according to claim 1, characterized in that: The first air inlet (111), the oil inlet (112), the oil outlet (113), the exhaust port (121) and the second air inlet (122) are all extended through pipelines, and corresponding pipelines are each equipped with a switch valve (1f) for opening and closing.

3. A pneumatic oil storage and supply device according to claim 1, characterized in that: The pressure supply unit (2) comprises an air compressor (21) and a pressure regulating valve (22); the air compressor (21) is connected to the pressure regulating valve (22); and the pressure regulating valve (22) is connected to the first air inlet (111) and the second air inlet (122).

4. A pneumatic oil storage and supply device according to claim 3, characterized in that: The pressure supply unit (2) further comprises an air storage tank (23), and the air compressor (21) is connected to the pressure regulating valve (22) via the air storage tank (23).

5. A pneumatic oil storage and supply device according to claim 3, characterized in that: The air compressor (21) further comprises a monitoring unit (3), wherein the monitoring unit (3) comprises an oil pressure sensor (31) and an air pressure sensor (32) electrically connected to the air compressor (21), wherein the oil pressure sensor (31) is used to monitor the oil pressure inside the liquid cavity (11), and the air pressure sensor (32) is used to monitor the air pressure inside the air cavity (12).

6. A pneumatic oil storage and supply device according to claim 5, characterized in that: The monitoring unit (3) further comprises a liquid level sensor (33) electrically connected to the air compressor (21), wherein the liquid level sensor (33) is used to monitor the amount of oil inside the liquid cavity (11).

7. A pneumatic oil storage and supply device according to claim 6, characterized in that: The monitoring unit (3) further comprises a displacement sensor (34) electrically connected to the air compressor (21), wherein the displacement sensor (34) is used to monitor the displacement of the piston (10).

8. A pneumatic oil storage and supply device according to claim 7, characterized in that: The piston (10) is provided with a sliding rod (100), the sliding rod (100) can slidably penetrate the air cavity (12) to the outside, and the connection between the sliding rod (100) and the air cavity (12) is sealed. The displacement sensor (34) is installed in the outside and is used to monitor the displacement of the sliding rod (100).

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