Oil-water separation tank for cleaning storage tank

Abstract

The utility model relates to the field of oil tank oil-water separation devices, and discloses an oil-water separation tank for cleaning a storage tank, which comprises a mounting frame, the mounting frame is fixed on the bottom surface of a tank body, an oil drain pump is fixed in the mounting frame, a water ring pump negative pressure suction unit is fixed in the mounting frame, and a water pump negative pressure suction unit is fixed in the water ring pump negative pressure suction unit. A mounting frame is fixed in the box body, a circulating buffer tank is fixed on the bottom surface in the mounting frame, an air compressor is fixed in the mounting frame, a sewage screw pump is fixed in the mounting frame, a mounting box is detachably arranged in the box body, and a plurality of through holes are formed in the four sides of the outer wall of the mounting box respectively; and a gas-liquid filter screen is arranged in the mounting box. According to the oil-water separation device, oil and water used for cleaning the storage tank can be separated, tiny oil droplets are promoted to collide and gather together to form larger oil droplets, the oil-water separation speed is increased, oil and water can be fully separated, the separation efficiency is improved, and therefore the follow-up treatment or recovery effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-water separation devices for oil tanks, in particular to an oil-water separation box for cleaning storage tanks. Background Art

[0002] After a period of use, a certain amount of sludge will be deposited on the bottom of the petrochemical storage tank, and a certain amount of condensed oil will also be deposited on the tank wall. We use an oil tank cleaning gun to physically clean the sludge and condensed oil. The oil tank cleaning gun sprays hot oil to break and dissolve the surrounding sludge and condensed oil, and disperses them by stirring, thereby reducing the height of the sludge and condensed oil. The large amount of oil-water mixed liquid generated during the warm water cleaning process needs to be separated from the oil and water and then the oil and water are collected separately. Part of the water will be reused for tank cleaning.

[0003] At present, most oil-water separation boxes used for tank cleaning are relatively large during normal use, and there is enough time for sedimentation. However, when used on a vehicle, the volume of the oil-water separation box will be reduced. Therefore, in the case of a small volume, the time that the oil and water stay in the box may be reduced, which has the following disadvantages: the oil and water cannot be fully separated, resulting in incomplete oil-water separation, and reducing the effect of subsequent treatment or recovery. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-water separation box for cleaning a storage tank, so as to solve the problem that most of the oil-water separation boxes for cleaning a storage tank are currently too large in normal use, but when used on a vehicle, the volume of the oil-water separation box will be reduced. Therefore, when the volume is small, the time that the oil and water stay in the box may be reduced, resulting in the inability to fully separate the oil and water, causing incomplete oil-water separation and reducing the effect of subsequent processing or recovery.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: an oil-water separation box for cleaning a storage tank, comprising a mounting frame, the mounting frame is fixed to the bottom surface of the box body, an oil drain pump is fixed inside the mounting frame, a water ring pump negative pressure suction unit is fixed inside the mounting frame, a circulating buffer tank is fixed to the inner bottom surface of the mounting frame, an air compressor is fixed inside the mounting frame, a sewage screw pump is fixed inside the mounting frame, a connecting frame is fixed to the top surface of the box body, a mounting box is detachably provided inside the box body, a plurality of through holes are respectively opened on four sides of the outer wall of the mounting box, and a gas-liquid filter is provided inside the mounting box.

[0006] Preferably, two first threaded grooves are provided on the top surface of the installation box, and a blocking plate is detachably provided on the top surface of the installation box. Two first threaded holes are provided on the top surface of the blocking plate, and first bolts are respectively threadedly connected in the two first threaded holes, and the threaded ends of the two first bolts are respectively connected to the internal threads of the two first threaded grooves.

[0007] Preferably, a fixing hole is opened on the rear side of the inner wall of the box body, and a liquid level sensor is fixed inside the fixing hole.

[0008] Preferably, a plurality of observation ports are provided on the left side of the outer wall of the box body, and a plurality of transparent observation windows are fixed on the left side of the outer wall of the box body.

[0009] Preferably, two second threaded grooves are respectively provided on the front and rear sides of the inner wall of the connecting frame, and two second threaded holes are respectively provided on the front and rear sides of the outer wall of the installation box, and second bolts are respectively threadedly connected in the two second threaded holes, and the threaded ends of the two second bolts are respectively connected to the internal threads of the two second threaded grooves.

[0010] Preferably, positioning grooves are respectively provided on the front and rear sides of the inner wall of the connecting frame, positioning blocks are respectively fixed on the front and rear sides of the outer wall of the installation box, and the two positioning grooves respectively position the two positioning blocks.

[0011] Compared with the prior art, the oil-water separation box for tank cleaning using the above technical solution has the following beneficial effects:

[0012] 1. When in use, the oil and water are in contact with the gas-liquid filter, which can cause the oil droplets in the oil and water to collide with the installation box and the gas-liquid filter, causing the tiny oil droplets to collide and gather together to form larger oil droplets. Since the large oil droplets have a larger mass, their rising speed will also increase, which is conducive to fully separating the oil and water, improving the separation efficiency, and thus improving the effect of subsequent treatment or recovery;

[0013] Second, during use, the blocking plate helps the staff to place the gas-liquid filter inside the installation box and then block it. Then the blocking plate is fixed by the first bolt, thereby preventing the gas-liquid filter from detaching from the installation box and improving the stability of the gas-liquid filter. The liquid level sensor helps to monitor the liquid level changes in the box in real time to ensure that the separation effect reaches the best state;

[0014] 3. During use, the observation port and transparent observation window can help the staff to intuitively understand the oil-water separation situation, understand whether the separation effect is good, and take necessary adjustments and measures in time. The second bolt can help the staff to disassemble and assemble the installation box, so that it is convenient for the staff to clean or replace the installation box. The positioning groove and positioning block can help the staff to assist in positioning when installing the installation box, so that the second threaded hole corresponds to the second threaded groove, which is conducive to improving the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 It is a schematic diagram of an explosion of an embodiment.

[0017] Figure 3 It is a schematic diagram of an explosion at the installation box in the embodiment.

[0018] Figure 4 It is a schematic diagram of the explosion of the connecting frame and the blocking plate in the embodiment.

[0019] Figure 5 For example Figure 2 Enlarged schematic diagram at point A in the middle.

[0020] In the figure: 1. mounting frame; 2. housing; 3. oil drain pump; 4. negative pressure suction unit of water ring pump; 5. circulation buffer tank; 6. air compressor; 7. sewage screw pump; 8. connecting frame; 9. mounting box; 10. gas-liquid filter; 11. first threaded groove; 12. blocking plate; 13. first threaded hole; 14. first bolt; 15. fixing hole; 16. liquid level sensor; 17. observation port; 18. transparent observation window; 19. second threaded groove; 20. second threaded hole; 21. second bolt; 22. positioning groove; 23. positioning block. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 5 As shown, an oil-water separation box for tank cleaning includes a mounting frame 1, which is fixed to the bottom surface of a box body 2, an oil drain pump 3 is fixed inside the mounting frame 1, a water ring pump negative pressure suction unit 4 is fixed inside the mounting frame 1, a circulating buffer tank 5 is fixed to the inner bottom surface of the mounting frame 1, an air compressor 6 is fixed inside the mounting frame 1, a sewage screw pump 7 is fixed inside the mounting frame 1, a connecting frame 8 is fixed to the top surface of the box body 2, a mounting box 9 is detachably provided inside the box body 2, a plurality of through holes are respectively opened on four sides of the outer wall of the mounting box 9, and a gas-liquid filter 10 is provided inside the mounting box 9.

[0023] During use, the staff fills the box 2 with clean water in advance, and the sewage screw pump 7 sucks the clean water in the equipment box 2, then installs the tank cleaning gun, connects the tank cleaning gun and the water outlet of the box 2 with a temporary pipeline, and injects it into the visual automatic cleaning gun through the temporary pipeline. Through the effect of the nozzle of the tank cleaning gun becoming smaller and pressurized, the water in the box 2 is pumped into the cleaned tank, and the residual bottom liquid (oil) in the cleaned tank is mixed with the cleaning water and accumulated in the cleaned tank. The negative pressure suction force is provided by the water ring pump negative pressure suction unit 4, and the pipeline of the water ring pump negative pressure suction unit 4 and the circulation buffer tank 5 is connected to generate a circulation buffer tank 5 container. Negative pressure, an external hose, place the hose in the storage tank to be cleaned, and suck the mixed liquid in the storage tank to be cleaned into the circulation buffer tank 5, and then use the oil discharge pump 3 to filter the liquid inside the circulation buffer tank 5 and pump it into the box body 2. The oil and water will first enter the interior of the installation box 9, so that the oil and water will contact the gas-liquid filter 10, which can make the oil droplets in the oil and water collide with the installation box 9 and the gas-liquid filter 10, causing the small oil droplets to collide and gather together to form larger oil droplets. Since the large oil droplets have a larger mass, their rising speed will also increase, which is conducive to fully separating the oil and water, improving the separation efficiency, and thus improving the effect of subsequent treatment or recovery.

[0024] like Figure 2-Figure 5 As shown, two first threaded grooves 11 are provided on the top surface of the installation box 9, and a blocking plate 12 is detachably provided on the top surface of the installation box 9. Two first threaded holes 13 are provided on the top surface of the blocking plate 12, and first bolts 14 are respectively threadedly connected in the two first threaded holes 13, and the threaded ends of the two first bolts 14 are respectively connected to the internal threads of the two first threaded grooves 11.

[0025] During use, the blocking plate 12 facilitates the staff to place the gas-liquid filter 10 inside the installation box 9 for blocking, and then fixes the blocking plate 12 with the first bolt 14, thereby preventing the gas-liquid filter 10 from detaching from the installation box 9, thereby improving the stability of the gas-liquid filter 10.

[0026] like Figure 1-Figure 4 As shown, a fixing hole 15 is opened on the rear side of the inner wall of the box body 2, a liquid level sensor 16 is fixed inside the fixing hole 15, a plurality of observation ports 17 are opened on the left side of the outer wall of the box body 2, and a plurality of transparent observation windows 18 are fixed on the left side of the outer wall of the box body 2.

[0027] During use, the liquid level sensor 16 is used to monitor the liquid level changes in the box 2 in real time to ensure that the separation effect reaches the best state. The observation port 17 and the transparent observation window 18 are used to help the staff to intuitively understand the oil-water separation situation, understand whether the separation effect is good, and take necessary adjustments and measures in time.

[0028] like Figure 2-Figure 5 As shown, two second thread grooves 19 are respectively provided on the front and rear sides of the inner wall of the connecting frame 8, and two second threaded holes 20 are respectively provided on the front and rear sides of the outer wall of the installation box 9, and second bolts 21 are respectively threadedly connected in the two second threaded holes 20, and the threaded ends of the two second bolts 21 are respectively threadedly connected to the internal threads of the two second thread grooves 19, and positioning grooves 22 are respectively provided on the front and rear sides of the inner wall of the connecting frame 8, and positioning blocks 23 are respectively fixed on the front and rear sides of the outer wall of the installation box 9, and the two positioning grooves 22 respectively position the two positioning blocks 23.

[0029] In use, the second bolt 21 facilitates the staff to disassemble and assemble the installation box 9, so that it is convenient for the staff to clean or replace the installation box 9. The positioning groove 22 and the positioning block 23 facilitate the staff to perform auxiliary positioning when installing the installation box 9, so that the second threaded hole 20 corresponds to the second threaded groove 19, which is conducive to improving the convenience of installation.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oil-water separation box for tank cleaning, comprising a mounting frame (1), wherein the mounting frame (1) is fixed to the bottom surface of a box body (2), and is characterized in that: An oil drain pump (3) is fixed inside the mounting frame (1), a water ring pump negative pressure suction unit (4) is fixed inside the mounting frame (1), a circulation buffer tank (5) is fixed on the inner bottom surface of the mounting frame (1), an air compressor (6) is fixed inside the mounting frame (1), a sewage screw pump (7) is fixed inside the mounting frame (1), a connecting frame (8) is fixed on the top surface of the box body (2), a mounting box (9) is detachably provided inside the box body (2), a plurality of through holes are respectively provided on four sides of the outer wall of the mounting box (9), and a gas-liquid filter (10) is provided inside the mounting box (9).

2. The oil-water separation box for tank cleaning according to claim 1, characterized in that: The top surface of the installation box (9) is provided with two first threaded grooves (11), and the top surface of the installation box (9) is detachably provided with a blocking plate (12), and the top surface of the blocking plate (12) is provided with two first threaded holes (13), and the two first threaded holes (13) are respectively threadedly connected with first bolts (14), and the threaded ends of the two first bolts (14) are respectively threadedly connected with the internal threads of the two first threaded grooves (11).

3. The oil-water separation box for tank cleaning according to claim 2 is characterized by: A fixing hole (15) is provided on the rear side of the inner wall of the box body (2), and a liquid level sensor (16) is fixed inside the fixing hole (15).

4. The oil-water separation box for tank cleaning according to claim 3 is characterized by: A plurality of observation ports (17) are provided on the left side of the outer wall of the box body (2), and a plurality of transparent observation windows (18) are fixed on the left side of the outer wall of the box body (2).

5. The oil-water separation box for tank cleaning according to claim 4 is characterized by: Two second threaded grooves (19) are respectively provided on the front and rear sides of the inner wall of the connecting frame (8), and two second threaded holes (20) are respectively provided on the front and rear sides of the outer wall of the installation box (9), and second bolts (21) are respectively threadedly connected in the two second threaded holes (20), and the threaded ends of the two second bolts (21) are respectively threadedly connected to the inner parts of the two second threaded grooves (19).

6. The oil-water separation box for tank cleaning according to claim 1, characterized in that: Positioning grooves (22) are respectively provided on the front and rear sides of the inner wall of the connecting frame (8), and positioning blocks (23) are respectively fixed on the front and rear sides of the outer wall of the installation box (9), and the two positioning grooves (22) respectively position the two positioning blocks (23).

Images