Automatic oil return device without power supply

Abstract

The utility model relates to the technical field of oil mist lubrication and recovery, in particular to an automatic oil return device without power supply, which comprises a frame body, an oil storage tank and a pneumatic pump are mounted on the frame body, an oil return pipe and a pressure release valve are connected to the left side of the oil storage tank, and a liquid level trigger type component is mounted in the oil storage tank. The bottom of the pneumatic pump is connected with an oil pumping pipe communicated with the bottom of the oil storage tank, and one side is connected with an oil outlet pipe. According to the automatic oil return device without power supply, air enters continuously through the air inlet pipe, the air enters the pressure reducing valve and the pressure gauge until being conveyed into the first air guide pipe, when the oil level surface in the oil storage tank rises, a floating ball in the liquid level triggering type assembly rises, a lantern ring makes contact with a limiting block, opening and closing of an on-off valve are triggered, and the first air guide pipe and the second air guide pipe are communicated; the second air guide pipe introduces air into the pneumatic pump, so that the pneumatic pump operates to guide out oil in the oil storage tank, and when the liquid level in the oil storage tank rises, the oil can be automatically discharged without power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of oil mist lubrication and recovery, and particularly to an automatic oil return device without power supply. Background Art

[0002] Oil mist lubrication systems are commonly used in the machining industry, especially in applications that require continuous and precise lubrication, such as the lubrication of the main shaft bearings of machine tools. The advantages of oil mist lubrication include the ability to evenly deliver lubricating oil to hard-to-reach locations and the ability to cool the working area. However, this lubrication method also has some problems. In particular, the emission of oil mist into the environment may cause pollution and pose a threat to the health of workers.

[0003] When installing the on-site pipeline of the existing oil mist lubrication recovery system for pump groups, there may be obstacles. At this time, the pipeline needs to be laid in a U-shape to bypass the obstacles and extend forward. At this time, a problem arises. Since the U-shaped pipeline will cause the accumulation of oil, it cannot flow back to the oil mist main unit. When the oil accumulates to a certain extent, it will cause pipeline blockage and the oil mist cannot be delivered to the pumps. At this time, a device is needed to solve this problem. At the same time, in order not to cause potential safety hazards, an automatic oil return device without power supply is proposed to solve the above problems. Summary of the Utility Model

[0004] To achieve the above object, the utility model provides the following technical solution: an automatic oil return device without power supply, including a frame body, on which a storage oil tank and a pneumatic pump are installed. The left side of the storage oil tank is connected with an oil return pipe and a pressure relief valve, and a liquid level trigger component is installed inside. The bottom of the pneumatic pump is connected with an oil suction pipe communicating with the bottom of the storage oil tank, and one side is connected with an oil outlet pipe. And a pipeline part communicating with the liquid level trigger component is installed on the back of the pneumatic pump, and a pressure reducing valve and a pressure gauge are installed on the pipeline part.

[0005] Further, the pipeline part includes an air inlet pipe fixed on the frame body. One end of the air inlet pipe is connected with a first guide pipe extending into the storage oil tank and communicating with the liquid level trigger component. The other end of the liquid level trigger component is connected with a second guide pipe. One end of the second guide pipe is connected with a connecting pipe communicating with the pneumatic pump. The pressure reducing valve is installed on the air inlet pipe, and the pressure gauge is installed between the air inlet pipe and the first guide pipe.

[0006] Further, one end of the air inlet pipe is connected with the first guide pipe through a three-way joint, and the second guide pipe and the connecting pipe are also connected through a three-way joint. An auxiliary pipe is connected between one ends of the two three-way joints, and a manual valve is installed on the outside of the auxiliary pipe.

[0007] Further, the liquid level trigger assembly includes a on-off valve installed between the second air guide pipe and the first air guide pipe. A guide rod is fixed to the bottom of the on-off valve. A collar is sleeved on the outer side of the guide rod. A limit block with an inner diameter equal to that of the collar is fixed to the bottom of the guide rod. A floating ball is fixed to the bottom of the collar.

[0008] Further, a plurality of top columns are fixed to the inner top wall of the fuel tank. An upper plate is fixed between the plurality of top columns. A plurality of connecting columns are fixed to the upper plate. An annular plate is fixed between the bottoms of the plurality of connecting columns. The on-off valve is installed on the upper plate. The guide rod passes through the upper plate. The floating ball is located between the upper plate and the annular plate.

[0009] Further, a liquid level gauge is installed on the front of the fuel tank.

[0010] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0011] For this automatic oil return device that does not require power supply, air is continuously introduced through the air inlet pipe. The air will pass through the pressure reducing valve and the pressure gauge and then be delivered to the first air guide pipe. When the oil level in the fuel tank rises, the floating ball in the liquid level trigger assembly rises. The collar touches the limit block, triggering the opening and closing of the on-off valve and connecting the first air guide pipe and the second air guide pipe. The second air guide pipe leads the air into the pneumatic pump, causing the pneumatic pump to operate and discharge the oil in the fuel tank. Therefore, when the liquid level in the fuel tank rises, it can be automatically discharged without power supply. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a rear three-dimensional view of the structure of the present utility model;

[0014] Figure 3 is the present utility model Figure 1 left sectional view;

[0015] Figure 4 is a three-dimensional view of the top column connection structure in the present utility model;

[0016] Figure 5 is a three-dimensional view of the collar connection structure in the present utility model.

[0017] In the figure: 1, frame body; 2, fuel tank; 3, oil return pipe; 4, liquid level gauge; 5, pneumatic pump; 6, oil outlet pipe; 7, air inlet pipe; 8, pressure reducing valve; 9, auxiliary pipe; 10, pressure gauge; 11, first air guide pipe; 12, second air guide pipe; 13, manual valve; 14, oil suction pipe; 15, connecting pipe; 16, pressure relief valve; 17, top column; 18, upper plate; 19, connecting column; 20, annular plate; 21, guide rod; 22, collar; 23, limit block; 24, floating ball; 25, on-off valve. Detailed implementation mode

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-5 , an automatic oil return device without power supply in this embodiment includes a frame body 1, a storage oil tank 2 and a pneumatic pump 5 are fixed inside the frame body 1, an oil return pipe 3 and a pressure relief valve 16 connected to an external machine pump are fixed on the left side of the storage oil tank 2, and a liquid level trigger type component is installed inside. A suction pipe 14 connected to the bottom of the storage oil tank 2 is fixed at the bottom of the pneumatic pump 5, an oil outlet pipe 6 is connected to the front of the pneumatic pump 5, a connecting pipe 15 is fixed to the back, one end of the connecting pipe 15 is connected to a second guide air pipe 12 extending into the storage oil tank 2 and communicating with the liquid level trigger type component, the other end of the liquid level trigger type component is fixed with a first guide air pipe 11, one end of the first guide air pipe 11 is connected to an air inlet pipe 7, a pressure reducing valve 8 is installed outside the air inlet pipe 7, and a pressure gauge 10 is installed outside the first guide air pipe 11.

[0020] In the above structure, first, the oil separated by the oil mist is stored in the storage oil tank through the oil return pipe. When the oil level in the storage oil tank rises, the liquid level trigger type component will rise together with the oil. At the same time, the air inlet pipe continuously intakes air, and the gas enters the first guide air pipe through the pressure reducing valve. At the same time, the pressure gauge monitors the air pressure. At this time, when the liquid level trigger type component rises and triggers the operation, it can make the first guide air pipe and the second guide air pipe communicate, so that the gas enters the connecting pipe through the second guide air pipe and communicates with the pneumatic pump, causing the pneumatic pump to start running. Therefore, the pneumatic pump can pump the oil in the storage oil tank through the suction pipe and discharge it through the oil outlet pipe, reducing the oil level. At the same time, during the descending process, after the on-off valve runs for a certain time, it will automatically close. When the on-off valve closes, the pneumatic pump also stops running. Therefore, when the storage oil tank is full of oil, it can automatically run without power supply to pump out the oil.

[0021] Such as Figure 3 、 4 and 5, in order to Figure 5For the shown direction, the liquid level trigger assembly includes a on-off valve 25 installed between the first air duct 11 and the second air duct 12. A guide rod 21 is installed at the bottom of the on-off valve 25, and a limit block 23 is fixed at the bottom of the guide rod 21. The limit block 23 can be a trigger block or a sensor. A collar 22 is sleeved outside the guide rod 21. The limit block 23 is located inside the collar 22, and a floating ball 24 is fixed at the bottom opening of the collar 22. When the oil level in the oil storage tank increases, the floating ball will rise synchronously with the rise of the oil level surface, and at the same time, it will also push the collar upward until the floating ball floats to the highest point. The limit block will contact the inner bottom wall of the collar. After being triggered, the limit block starts the on-off valve, and the on-off valve operates for a certain period of time, so that the first air duct can be connected to the second air duct. It should be noted that the triggering method between the limit block and the collar in this embodiment is not limited. For example, the limit block is a magnetic sensor, and there is a magnetic ring plate on the inner bottom wall of the collar. When the position height of the magnetic ring plate changes, the magnetic sensor can detect the change of magnetic flux or magnetic force magnitude, so as to complete the detection of the floating ball height. Controlling the on-off valve to operate by the trigger of the limit block is a prior art, so no more introduction will be made.

[0022] Among them, taking Figure 4 as the shown direction, four top columns 17 are fixed on the inner top wall of the oil storage tank 2. An upper plate 18 is fixed between the bottoms of the four top columns 17. A connecting column 19 is fixed at the bottom of the upper plate 18, and an annular plate 20 is fixed at the bottom of the four connecting columns 19. The on-off valve 25 is fixed on the upper plate 18. The bottom of the guide rod 21 passes through the upper plate 18. The floating ball 24 is located between the four connecting columns 19, and the inner diameter of the annular plate 20 is smaller than the diameter of the floating ball 24. The top columns support the upper plate, and at the same time, they can also support the on-off valve, and can reduce the load of the first air duct and the second air duct. Then the connecting columns can limit the floating ball to ensure that the floating ball moves straight up and down. When the floating ball falls to the lowest point, the annular plate can play a role in holding the floating ball.

[0023] As Figure 2 , the first air duct 11 is connected to the intake pipe 7 through a tee joint. The connecting pipe 15 and the second air duct are also connected through a tee joint. An auxiliary pipe 9 is fixed between the two tee joints. A manual valve 13 is fixed on the outside of the auxiliary pipe 9. A liquid level gauge 4 is installed on the outside of the oil storage tank 2. The liquid level inside the oil storage tank can be directly observed through the liquid level gauge. When the oil is to be discharged, the manual valve is opened. Therefore, the gas in the intake pipe will directly enter the pneumatic pump through the auxiliary pipe, so that the pneumatic pump can be operated. And when the on-off valve fails, the pneumatic pump can also be operated by opening the manual valve to discharge the oil in the oil storage tank.

[0024] The working principle of the above embodiment is as follows:

[0025] The oil is stored in the oil storage tank through the oil return pipe, and the internal liquid level of the oil storage tank can be observed through the liquid level gauge. When you want to discharge it actively or when the on-off valve fails, open the manual valve, and the air intake pipe will directly guide the gas to the connecting pipe through the auxiliary pipe and transport it to the pneumatic pump to make the pneumatic pump run. The oil extraction pipe will discharge the oil in the oil storage tank through the oil outlet pipe;

[0026] At the same time, when the manual valve is closed, the gas in the intake pipe enters into the air guide pipe 1, and then when the oil in the oil storage tank rises, the float will follow the above, and will also push the sleeve ring to rise until it reaches the highest point, and the limit block contacts the inner bottom wall of the sleeve ring, and at the same time, it can also start the on-off valve to open for a period of time. Therefore, the gas in the air guide pipe 1 will enter into the air guide pipe 2, and then be guided to the connecting pipe through the air guide pipe 2, and then be transported to the pneumatic pump to start the pneumatic pump and export the oil.

[0027] In summary, the oil can be automatically and passively drained, and the oil can also be drained without power supply.

[0028] The entire workflow is completed, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] It should be noted that in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic oil return device without power supply, characterized in that: It includes a frame body (1), on which an oil storage tank (2) and a pneumatic pump (5) are installed. A return oil pipe (3) and a pressure relief valve (16) are connected to the left side of the oil storage tank (2), and a liquid level trigger assembly is installed inside. The bottom of the pneumatic pump (5) is connected to an oil suction pipe (14) communicating with the bottom of the oil storage tank (2), and an oil outlet pipe (6) is connected to one side. Also, a pipeline part communicating with the liquid level trigger assembly is installed on the back of the pneumatic pump (5), and a pressure reducing valve (8) and a pressure gauge (10) are installed on the pipeline part.

2. The automatic oil return device without power supply according to claim 1, characterized in that: The pipeline part includes an air inlet pipe (7) fixed on the frame body (1). One end of the air inlet pipe (7) is connected to an air guide pipe one (11) extending into the oil storage tank (2) and communicating with the liquid level trigger assembly. The other end of the liquid level trigger assembly is connected to an air guide pipe two (12). One end of the air guide pipe two (12) is connected to a connecting pipe (15) communicating with the pneumatic pump (5). The pressure reducing valve (8) is installed on the air inlet pipe (7), and the pressure gauge (10) is installed between the air inlet pipe (7) and the air guide pipe one (11).

3. The automatic oil return device without power supply according to claim 2, characterized in that: One end of the air inlet pipe (7) is connected to the air guide pipe one (11) through a tee joint. The air guide pipe two (12) and the connecting pipe (15) are also connected through a tee joint. An auxiliary pipe (9) is connected between one ends of the two tee joints, and a manual valve (13) is installed on the outside of the auxiliary pipe (9).

4. The automatic oil return device without power supply according to claim 3, characterized in that: The liquid level trigger assembly includes a on-off valve (25) installed between the air guide pipe two (12) and the air guide pipe one (11). A guide rod (21) is fixed to the bottom of the on-off valve (25). A collar (22) is sleeved on the outside of the guide rod (21). A limit block (23) with the same inner diameter as the collar (22) is fixed to the bottom of the guide rod (21). A floating ball (24) is fixed to the bottom of the collar (22).

5. The automatic oil return device without power supply according to claim 4, characterized in that: Multiple top columns (17) are fixed to the inner top wall of the oil storage tank (2). An upper plate (18) is fixed between the multiple top columns (17). Multiple connecting columns (19) are fixed to the upper plate (18). An annular plate (20) is fixed between the bottoms of the multiple connecting columns (19). The on-off valve (25) is installed on the upper plate (18), and the guide rod (21) passes through the upper plate (18). The floating ball (24) is located between the upper plate (18) and the annular plate (20).

6. An automatic oil return device without power supply according to claim 5, characterized in that: A liquid level gauge (4) is installed on the front of the oil storage tank (2).

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