Oil cleaning device for large oil tank

Abstract

The utility model provides a large oil tank oil cleaning device which is applied to an oil storage tank, an oil supply pipe is fixedly connected to the side wall of the middle of the oil storage tank, a first filter and a second pump are sequentially arranged on the oil supply pipe, the oil cleaning device comprises an oil cleaning pipe, one end of the oil cleaning pipe is fixedly connected to the lower end of the oil storage tank, and the other end of the oil cleaning pipe is communicated with the oil supply pipe. An indicator pipe, a filter set and a first pump are sequentially arranged on the clear oil pipe, the indicator pipe comprises a pipe body, the clear oil pipe penetrates through the middle of the pipe body and is communicated with the pipe body, the upper end of the pipe body is in threaded connection with an upper cover, the lower end of the upper cover is fixedly connected with a vertical rod, and the vertical rod is sleeved with a floater. The density of the floater is between the density of water and the density of a product in the oil storage tank, a window is arranged on the side wall of the pipe body, and the two filtering sets are arranged in parallel and comprise second filters. According to the invention, oil cleaning work of the oil storage tank can be rapidly realized.

Description

Technical Field

[0001] This invention relates to the field of oil cleaning equipment technology, and more particularly to an oil cleaning equipment for large oil tanks. Background Technology

[0002] During long-term storage, transportation, and production, small amounts of mechanical impurities, sand, mud, heavy metal salts, and heavy oil components such as paraffin and asphalt will naturally settle due to their density difference, accumulating at the bottom of the oil tank to form a thick, black, gelatinous layer known as tank sludge. Therefore, regular cleaning is necessary to reduce tank sludge formation, and the interior of the tanks must be scrubbed.

[0003] The lower part of the oil tank contains not only many impurities but also water. Before cleaning the oil, drainage is necessary. However, the excessive impurities put a lot of pressure on the filter, so a device for rapid drainage and oil cleaning is required. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a large-scale oil tank cleaning device, applied to an oil storage tank. An oil supply pipe is fixedly connected to the middle side wall of the oil storage tank, and a first filter and a second pump are sequentially installed on the oil supply pipe. The device includes a cleaning pipe, one end of which is fixedly connected to the lower end of the oil storage tank, and the other end connected to the oil supply pipe. An indicator pipe, a filter assembly, and the first pump are sequentially installed on the cleaning pipe. During normal oil supply to the oil storage tank, the second pump operates; during oil tank cleaning, the first pump operates.

[0005] The indicator tube includes a tube body, and an oil-cleaning pipe passes through the middle of the tube body and connects to it. A top cover is threaded to the upper end of the tube body, and a vertical rod is fixedly connected to the lower end of the top cover. A float is fitted onto the vertical rod, and the density of the float is between that of water and the product in the oil storage tank. A viewing window is provided on the side wall of the tube body. Before oil cleaning, the water level inside is pre-measured using the float, and drainage is performed in advance.

[0006] The filter group consists of two sets connected in parallel, including a second filter. The input and output pipes of the second filter are equipped with a sixth valve and a seventh valve, respectively. Because the oil at the bottom contains a large amount of fixed impurities, it needs to be filtered by the second filter. Since two filter groups are provided, the other second filter can continue operating even when one is clogged and being cleaned.

[0007] Preferably, a drain pipe is fixedly connected to the lower end of the pipe body, and a first valve is provided on the drain pipe. Opening the first valve allows drainage to proceed through the drain pipe.

[0008] Preferably, a baffle is fixedly connected to the lower end of the vertical rod. This prevents the float from falling off the vertical rod, and the vertical rod and the baffle are fixed by a threaded connection or a snap-fit, which facilitates the periodic replacement of the float.

[0009] Preferably, a second valve is provided between the indicator tube and the filter assembly. The second valve is closed when draining oil.

[0010] Preferably, the oil supply pipe is equipped with a third valve and a fourth valve, and the connection between the oil cleaning pipe and the oil supply pipe is located between the third valve and the fourth valve. During oil cleaning, the third valve is opened and the fourth valve is closed to prevent oil from flowing back into the oil storage tank.

[0011] Preferably, a parallel pipe is connected in parallel between the output and input ends of the second pump, and the parallel pipe is equipped with a fifth valve. Since the second pump is an oil supply pump, it has a metering function in demanding scenarios. If impurities enter the second pump, it will cause a large metering error. Therefore, a parallel pipe is set up so that the second pump does not work during oil cleaning, and the fifth valve is opened.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. An indicator tube is installed to obtain the water level in the oil storage tank, which facilitates drainage operations and prevents oil from being discharged with the water, thus increasing the difficulty of wastewater treatment. At the same time, two sets of filters are installed to ensure continuous oil cleaning operations.

[0014] 2. It is equipped with a double-layer filter, namely a second filter and a first filter, and a parallel pipe is installed in parallel at the second pump to protect the second pump. At the same time, the double-layer filter improves the quality of the clean oil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the application assembly of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention;

[0017] Figure 3 This is an exploded schematic diagram of the indicator tube of the present invention;

[0018] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0019] List of reference numerals in the attached diagram:

[0020] 1. Oil storage tank; 2. Oil supply pipe; 3. Cleaning pipe; 4. Indicator pipe; 5. Drain pipe; 6. First valve; 7. Second valve; 8. Filter assembly; 9. First pump; 10. Third valve; 11. Fourth valve; 12. First filter; 13. Fifth valve; 14. Second pump; 15. Parallel pipe;

[0021] 41. Pipe body; 42. Viewing window; 43. Baffle; 44. Vertical rod; 45. Float; 47. Top cover; 81. Sixth valve; 82. Second filter; 83. Seventh valve. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figures 1 to 4 As shown, a large oil tank cleaning device is applied to an oil storage tank 1. An oil supply pipe 2 is fixedly connected to the middle side wall of the oil storage tank 1. The oil supply pipe 2 is fixedly connected to the middle of the oil storage tank 1 to prevent impurities and water that have settled at the bottom from being sent out through the oil supply pipe 2. A first filter 12 and a second pump 14 are sequentially installed on the oil supply pipe 2. The first filter 12 traps solid impurities, while the second pump 14 is a component used for pumping outwards. It includes a cleaning pipe 3. One end of the cleaning pipe 3 is fixedly connected to the lower end of the oil storage tank 1 to facilitate the drainage of all liquids in the oil storage tank 1. The other end is connected to the oil supply pipe 2. An indicator pipe 4, a filter group 8, and a first pump 9 are sequentially installed on the cleaning pipe 3. During oil cleaning, the first pump 9 is working and the second pump 14 is not working. At the same time, the filter group 8 performs pre-filtration treatment, and then the first filter 12 performs filtration treatment. The double filtration can greatly reduce the filtration pressure of the first filter 12.

[0024] The indicator tube 4 includes a tube body 41, which is vertically arranged. The lower end of the oil storage tank 1 is located exactly in the middle of the tube body 41. The cleaning pipe 3 passes through the middle of the tube body 41 and connects to the tube body 41. The upper end of the tube body 41 is threadedly connected to a cover 47, which can be opened by rotating the cover 47. The lower end of the cover 47 is fixedly connected to a vertical rod 44. A float 45 is sleeved on the vertical rod 44. The density of the float 45 is between that of water and the product in the oil storage tank 1. It is connected to the tube body 41 through the cleaning pipe 3. The liquid enters the interior of the tube body 41, and the float 45 is located between the oil and water. The height of the float 45 is the water height, with the lower end of the oil storage tank 1 as the starting point. A viewing window 42 is provided on the side wall of the tube body 41 for observing the height of the float 45.

[0025] Two filter groups 8 are set in parallel. Due to the large amount of impurities at the bottom of the oil storage tank 1, two filter groups 8 are set, including a second filter 82. The input and output pipes of the second filter 82 are respectively equipped with a sixth valve 81 and a seventh valve 83. When one of the second filters 82 is blocked, the other filter 83 is activated. When in use, the sixth valve 81 and the seventh valve 83 are in the open state. When cleaning, the sixth valve 81 and the seventh valve 83 are closed. At this time, the second filter 82 is opened to clean the filter screen.

[0026] The lower end of the pipe body 41 is fixedly connected to a drain pipe 5, which drains the water in the oil storage tank 1. A first valve 6 is installed on the drain pipe 5, and opening the first valve 6 activates the drainage.

[0027] A baffle 43 is fixedly connected to the lower end of the vertical rod 44. The baffle 43 prevents the float 45 from falling off the vertical rod 44. The baffle 43 and the vertical rod 44 are fixed by threaded connection or snap-fit, which facilitates the periodic replacement of the float 45 and ensures the accuracy of the indication.

[0028] A second valve 7 is installed between the indicator pipe 4 and the filter group 8. The second valve 7 is closed when draining water, and it opens when cleaning oil.

[0029] The oil supply pipe 2 is equipped with a third valve 10 and a fourth valve 11, and the connection between the oil cleaning pipe 3 and the oil supply pipe 2 is located between the third valve 10 and the fourth valve 11. During normal oil supply, both the third valve 10 and the fourth valve 11 are in the open state. When cleaning oil, the third valve 10 is closed to prevent oil from flowing back into the oil storage tank 1.

[0030] A parallel pipe 15 is connected in parallel between the output and input ends of the second pump 14, and a fifth valve 13 is installed on the parallel pipe 15. During the oil cleaning process, the fifth valve 13 is opened, and the second pump 14 will not work, thus serving a protective function.

[0031] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A large oil tank cleaning device, applied to an oil storage tank (1), wherein an oil supply pipe (2) is fixedly connected to the middle side wall of the oil storage tank (1), and a first filter (12) and a second pump (14) are sequentially arranged on the oil supply pipe (2), characterized in that, It includes an oil cleaning pipe (3), one end of which is fixedly connected to the lower end of the oil storage tank (1), and the other end is connected to the oil supply pipe (2). An indicator pipe (4), a filter group (8) and a first pump (9) are sequentially installed on the oil cleaning pipe (3). The indicator tube (4) includes a tube body (41), and the oil cleaning tube (3) passes through the middle of the tube body (41) and connects to the tube body (41). The upper end of the tube body (41) is threaded with a cover (47), and the lower end of the cover (47) is fixedly connected with a vertical rod (44). A float (45) is sleeved on the vertical rod (44), and the density of the float (45) is between that of water and the product in the oil storage tank (1). A viewing window (42) is provided on the side wall of the tube body (41). The filter group (8) is provided in parallel with two groups, including a second filter (82), and the input pipe and output pipe of the second filter (82) are respectively provided with a sixth valve (81) and a seventh valve (83).

2. The large oil tank cleaning device according to claim 1, characterized in that: The lower end of the pipe body (41) is fixedly connected to a drain pipe (5), and a first valve (6) is provided on the drain pipe (5).

3. The large oil tank cleaning device according to claim 1, characterized in that: A baffle (43) is fixedly connected to the lower end of the vertical rod (44).

4. The large oil tank cleaning device according to claim 1, characterized in that: A second valve (7) is provided between the indicator tube (4) and the filter group (8).

5. A large oil tank cleaning device according to claim 1, characterized in that: The oil supply pipe (2) is equipped with a third valve (10) and a fourth valve (11), and the connection between the oil cleaning pipe (3) and the oil supply pipe (2) is located between the third valve (10) and the fourth valve (11).

6. A large oil tank cleaning device according to claim 1, characterized in that: The output and input ends of the second pump (14) are connected in parallel by a parallel pipe (15), and the parallel pipe (15) is equipped with a fifth valve (13).

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