Oil separation and drainage control system capable of distinguishing oil density

Abstract

The invention discloses an oil separation and drainage control system capable of distinguishing oil product density, and relates to the technical field of oily water treatment, the oil separation and drainage control system comprises an oil separation tank, a collection tank, drainage pipes, a first automatic valve, a second automatic valve, a first manual valve, a second manual valve and an oil-water detection sensor, the first automatic valve, the second automatic valve, the first manual valve and the second manual valve are respectively arranged on a drain pipe, and the oil-water detection sensor is arranged in the oil separation tank. Through the arrangement of the first automatic valve, the second automatic valve, the first manual valve, the second manual valve and the oil-water detection sensor, no matter the density of oil in water is larger than or smaller than that of water, it can be guaranteed that the oil is left in the oil separation tank and is not discharged, and oil-free sewage accumulated in the tank can be automatically discharged in time; the liquid level in the oil separation tank is maintained to float within a normal range, and when an abnormal condition occurs, the oil separation tank stops the liquid discharge operation, and the liquid inlet valve is also automatically closed.

Description

Technical Field

[0001] The invention relates to the technical field of oily wastewater treatment, and in particular to an oil separation and drainage control system capable of identifying the density of oil products. Background Art

[0002] In recent years, the state has continuously strengthened the environmental protection control of high-energy-consuming industries. In various production links of glass manufacturing plants, the role of grease traps has become increasingly important. Grease traps are facilities that collect rainwater or sewage discharged from areas or equipment in the factory that may discharge oily sewage, isolate the oil in the oily sewage, and then discharge the oil-free water to the rainwater pipe network or sewage pipe network, and collect the isolated oil and clean it manually regularly.

[0003] The existing technology is to make a grease trap when it is known that the density of oil is heavier or lighter than water. If the oil is lighter than water, the oil trap baffle is blocked above the tank, and the water is discharged from the bottom of the tank; if the oil is heavier than water, the oil trap baffle is blocked at the bottom of the tank, and the water overflows from the top of the tank. However, how to automatically discharge sewage, block dirty oil, maintain automatic balance of the liquid level in the grease trap when the density of the oil is unknown, and regularly dispose of the dirty oil collected in the tank, is a difficulty encountered in the grease trap industry. Summary of the invention

[0004] The purpose of the present invention is to provide an oil separation and drainage control system that can identify the density of oil products, so as to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An oil separator and drainage control system capable of identifying the density of oil products comprises an oil separator, a collection tank, a drainage pipe, a first automatic valve, a second automatic valve, a first manual valve, a second manual valve and an oil-water detection sensor, wherein the oil separator and the collection tank are connected via a plurality of drainage pipes, the first automatic valve, the second automatic valve, the first manual valve and the second manual valve are respectively arranged on one of the drainage pipes, and the oil-water detection sensor is arranged in the oil separator.

[0007] Preferably, the plurality of drain pipes include a first drain pipe and a second drain pipe, one end of the first drain pipe has a first branch pipe and a second branch pipe, one end of the second drain pipe has a third branch pipe and a fourth branch pipe, the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected to the grease trap, and the other ends of the first drain pipe and the second drain pipe are respectively connected to the collection tank.

[0008] As a further preference, the first automatic valve is arranged on the first branch pipe, the second automatic valve is arranged on the second branch pipe, the first manual valve is arranged on the third branch pipe, and the fourth manual valve is arranged on the fourth branch pipe.

[0009] As a further preference, the first automatic valve is arranged above the second automatic valve, the first manual valve is arranged above the second manual valve, and the first manual valve is arranged above the second automatic valve.

[0010] Preferably, it further comprises a water inlet pipe and an automatic liquid inlet valve, one end of the water inlet pipe is connected to the grease trap, and the automatic liquid inlet valve is arranged on the water inlet pipe.

[0011] As a further preference, it further comprises a liquid level meter, and the liquid level meter is arranged inside the grease trap.

[0012] As a further preference, it also includes a PLC controller, which is connected to the first automatic valve, the second automatic valve, the liquid inlet automatic valve and the liquid level meter.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] In the present invention, by arranging the first automatic valve, the second automatic valve, the first manual valve, the second manual valve and the oil-water detection sensor, it is achieved that no matter the density of oil in the water is heavier or lighter than water, it can be ensured that the oil is retained in the grease trap and is not discharged, and the oil-free sewage accumulated in the trap can be automatically discharged in time, and the liquid level in the grease trap is maintained to float within a normal range. When an abnormal situation occurs, the grease trap will stop the discharge operation and the liquid inlet valve will automatically close. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the oil separation and drainage control system capable of identifying the density of oil products in the present invention.

[0016] In the figure: 1. Grease trap; 2. Sewage collection tank; 3. First automatic valve; 4. Second automatic valve; 5. First manual valve; 6. Second manual valve; 7. Oil-water detection sensor; 8. First drain pipe; 9. Second drain pipe; 10. First branch pipe; 11. Second branch pipe; 12. Third branch pipe; 13. Fourth branch pipe; 14. Liquid level meter; 15. Sewage oil collection tank; 16. Liquid inlet automatic valve. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Figure 1 This is a schematic diagram of the structure of the oil separation and drainage control system that can identify the density of oil products in the present invention. Figure 1 As shown, a preferred embodiment is shown, which shows an oil-water separation and drainage control system capable of distinguishing the density of oil products, including an oil-water separation tank 1, a collection tank, a drainage pipe, a first automatic valve 3, a second automatic valve 4, a first manual valve 5, a second manual valve 6 and an oil-water detection sensor 7. The oil-water separation tank 1 is connected to the collection tank through a plurality of drainage pipes, the first automatic valve 3, the second automatic valve 4, the first manual valve 5, and the second manual valve 6 are respectively arranged on a drainage pipe, and the oil-water detection sensor 7 is arranged in the oil-water separation tank 1 for detecting the density of oil products in the oil-water separation tank 1. In this embodiment, see Figure 1As shown, there are two collection tanks, namely, a sewage collection tank 2 and a waste oil collection tank 15, a first drain pipe 8 is connected to the sewage collection tank 2, and a second drain pipe 9 is connected to the waste oil collection tank 15. The first automatic valve 3 and the second automatic valve 4 can be opened automatically to automatically discharge sewage, while the first manual valve 5 and the second manual valve 6 are used for manual opening. The oil-water detection sensor 7 is used to determine whether the density of the oil in the grease trap 1 is heavier or lighter than water, so as to determine the opening sequence among the first automatic valve 3, the second automatic valve 4, the first manual valve 5 and the second manual valve 6.

[0021] Further, as a preferred embodiment, the plurality of drain pipes include a first drain pipe 8 and a second drain pipe 9, one end of the first drain pipe 8 has a first branch pipe 10 and a second branch pipe 11, one end of the second drain pipe 9 has a third branch pipe 12 and a fourth branch pipe 13, the first branch pipe 10, the second branch pipe 11, the third branch pipe 12 and the fourth branch pipe 13 are respectively connected to the grease trap 1, and the other ends of the first drain pipe 8 and the second drain pipe 9 are respectively connected to the collection tank. The first drain pipe 8 and the second drain pipe 9 are respectively connected to a collection tank for discharging sewage into the collection tank, wherein the first automatic valve 3 is arranged on the first branch pipe 10, the second automatic valve 4 is arranged on the second branch pipe 11, the first manual valve 5 is arranged on the third branch pipe 12, and the fourth manual valve is arranged on the fourth branch pipe 13. The first branch pipe 10 is located above the second branch pipe 11, the third branch pipe 12 is located above the fourth branch pipe 13, and the third branch pipe 12 is located above the second branch pipe 11, and the second branch pipe 11 is located above the fourth branch pipe 13. For details, see Figure 1 shown.

[0022] Further, as a preferred embodiment, the first automatic valve 3 is located above the second automatic valve 4 , the first manual valve 5 is located above the second manual valve 6 , and the first manual valve 5 is located above the second automatic valve 4 .

[0023] Furthermore, as a preferred embodiment, it also includes a water inlet pipe and an automatic liquid inlet valve 16, one end of the water inlet pipe is connected to the grease trap 1, and the automatic liquid inlet valve 16 is arranged on the water inlet pipe. The automatic liquid inlet valve 16 is used to control the flow or isolation of water inside the water inlet pipe, so as to control the sewage from entering the grease trap 1.

[0024] Further, as a preferred embodiment, a liquid level meter 14 is further included, and a liquid level meter 14 is arranged inside the grease trap 1. The liquid level meter 14 is used to detect the water level inside the grease trap 1.

[0025] Further, as a preferred embodiment, a PLC controller is further included, and the PLC controller is connected to the first automatic valve 3, the second automatic valve 4, the liquid inlet automatic valve 16 and the liquid level meter 14. The PLC controller is used to control the opening or closing of the first automatic valve 3, the second automatic valve 4, and the liquid inlet automatic valve 16, and the liquid level information detected by the liquid level meter 14 can be uploaded to the PLC controller, and the oil-water detection sensor 7 can send the detected information to the PLC controller.

[0026] In this embodiment, the oil-water detection sensor 7 arranged in the middle of the liquid level of the grease trap 1 is used to detect whether the water contains oil. According to the oil detection alarm of the oil-water detection sensor 7 and the liquid level height, the density relationship of the two liquids (sewage and oil) is determined, and the position of the oil-water interface is determined. Then, the first automatic valve 3 and the second automatic valve 4 located at the oil-water detection sensor 7 are controlled by the PLC controller to open and close, so that no matter whether the density of the oil in the water is heavier or lighter than water, it can be ensured that the oil in the water is retained in the grease trap 1 and is not discharged, and the accumulated oil-free sewage in the tank can be automatically discharged in time, and the liquid level in the grease trap 1 is maintained to float within the normal range. When an abnormal situation occurs, the grease trap 1 will stop the discharge operation, and the liquid inlet automatic valve 16 will also be automatically closed.

[0027] When in use, sewage enters the grease trap 1 from the water inlet pipe. As the liquid level in the grease trap 1 slowly rises, when the liquid level reaches the oil-water detection sensor 7, the oil-water detection sensor 7 detects sewage. When oil is heavier than water, the oil-water detection sensor 7 sends an oil-containing signal. As the liquid level continues to rise, when the oil-water sensor detects that there is no oil in the water, it means that a lot of sewage has accumulated in the lower layer. The PLC controller controls the second automatic valve 4 to open for bottom drainage. After the liquid level drops, when the oil-water sensor detects that there is oil in the water again, the second automatic valve 4 is closed to stop drainage. Repeat the above process, continuously discharge sewage, slowly accumulate upper dirty oil, and when the liquid level reaches the set height of the liquid level meter 14, a large amount of dirty oil has accumulated on the upper part of the grease trap 1, an alarm is issued and the liquid inlet automatic valve 16 is closed. Manual oil drainage is carried out after manual on-site inspection, and the first manual valve 5 is opened to remove the dirty oil.

[0028] If the oil is heavier than water, the oil-water detection sensor 7 detects that the water does not contain oil, and the first automatic valve 3 is opened for overflow drainage. When the oil-water sensor detects that the water contains oil, drainage is stopped. When the liquid level reaches the set height of the liquid level gauge 14, a large amount of dirty oil is accumulated in the lower part of the grease trap 1, an alarm is issued and the liquid inlet automatic valve 16 is closed. After manual on-site inspection, manual oil drainage is carried out, and the second manual valve 6 is opened to remove the dirty oil.

[0029] In other embodiments, when an oil leakage accident occurs in the factory, a large amount of dirty oil flows into the grease trap 1 in a short period of time, the oil-water detection sensor 7 sends an oil-containing signal, and the liquid level rises rapidly to the alarm height of the liquid level gauge 14 before drainage begins, an alarm is issued and the automatic liquid inlet valve 16 is closed. At this time, the grease trap 1 mainly prevents the dirty oil from entering the sewage network. After the accident is eliminated, the second manual valve 6 is manually opened to remove the dirty oil before normal use is resumed.

[0030] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil separation and drainage control system capable of identifying oil density, characterized in that: It includes a grease trap, a collection tank, a drain pipe, a first automatic valve, a second automatic valve, a first manual valve, a second manual valve and an oil-water detection sensor. The grease trap and the collection tank are connected via a plurality of drain pipes. The first automatic valve, the second automatic valve, the first manual valve and the second manual valve are respectively arranged on one of the drain pipes. The oil-water detection sensor is arranged in the grease trap.

2. The oil separation and drainage control system capable of distinguishing oil density as claimed in claim 1, characterized in that: The plurality of drain pipes include a first drain pipe and a second drain pipe, one end of the first drain pipe has a first branch pipe and a second branch pipe, one end of the second drain pipe has a third branch pipe and a fourth branch pipe, the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected to the grease trap, and the other ends of the first drain pipe and the second drain pipe are respectively connected to the collection tank.

3. The oil separation and drainage control system capable of distinguishing oil density as claimed in claim 2, characterized in that: The first automatic valve is arranged on the first branch pipe, the second automatic valve is arranged on the second branch pipe, the first manual valve is arranged on the third branch pipe, and the fourth manual valve is arranged on the fourth branch pipe.

4. The oil separation and drainage control system capable of distinguishing oil density as claimed in claim 3, characterized in that: The first automatic valve is disposed above the second automatic valve, the first manual valve is located above the second manual valve, and the first manual valve is located above the second automatic valve.

5. The oil separation and drainage control system capable of distinguishing oil density as claimed in claim 1, characterized in that: It also includes a water inlet pipe and an automatic liquid inlet valve, one end of the water inlet pipe is connected to the grease trap, and the automatic liquid inlet valve is arranged on the water inlet pipe.

6. The oil separation and drainage control system capable of distinguishing oil density as claimed in claim 5, characterized in that: It also includes a liquid level meter, which is arranged inside the grease trap.

7. The oil separation and drainage control system capable of distinguishing oil density as claimed in claim 6, characterized in that: It also includes a PLC controller, which is connected to the first automatic valve, the second automatic valve, the liquid inlet automatic valve and the liquid level meter.

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