Double-flange self-cleaning flushing device

Abstract

The utility model relates to the technical field of dirty liquid tank monitoring, and concretely relates to a double-flange self-cleaning flushing device, which comprises a dirty oil tank body, a negative pressure side flushing ring and a double-flange liquid level meter negative pressure side flange are sequentially arranged on the top of the dirty oil tank body, a positive pressure side flushing ring and a liquid level meter positive pressure side flange are sequentially arranged on the bottom of the dirty oil tank body, a blowdown U-shaped pipe is connected to one side of the positive pressure side flushing ring through a terminal connector connected to the outlet of the positive pressure side flushing ring, and a downstream blowdown hand valve and a blowdown electromagnetic valve are arranged at the two ends of the bottom of the blowdown U-shaped pipe; a rectangular through pipe is arranged at one end of the dirty oil tank body, a back flushing hand valve and a back flushing electromagnetic valve are arranged at the two ends of the bottom of the rectangular through pipe; the back flushing electromagnetic valve and the blowdown electromagnetic valve are controlled to work by a controller, so that automatic control is realized, manual control is realized through the back flushing hand valve and the downstream blowdown hand valve, the double-flange liquid level meter can be cleaned without stopping the vehicle to replace the hexane separation tank, and the accurate measurement of the liquid level of the hexane separation tank is ensured.

Description

Technical Field

[0001] This utility model relates to the field of wastewater tank monitoring technology, specifically to a double-flange self-cleaning flushing device. Background Technology

[0002] Currently, in actual production, the hexane separator is a nitrogen-filled, slightly positive pressure device. Multiple waste hexane units in the PE plant send hexane to the separator for hexane-water separation. Because some impurities in the waste hexane mixture settle onto the diaphragm of the dual-flange level gauge, causing inaccurate level indication, a low-level interlock and a high-level alarm are installed in the system. A false high level will cause the hexane separator's discharge valve to open wide, resulting in both oil and water being transported to downstream production equipment. If the actual level in the hexane separator continues to decrease, there is a risk of the storage tank pump running dry, causing certain economic losses to the company.

[0003] There are no effective measures to address the issue of false alarms. Because the insertion-type double-flange level gauge lacks a regulating valve, it is impossible to remove and clean the debris from the double-flange diaphragm box after it has been cut off. The double-flange level gauge can only be removed and cleaned after the hexane separator has been cut out and cleaned. If the debris at the double-flange diaphragm box cannot be removed, the inaccurate level measurement will seriously affect the stable operation of the production unit. Therefore, a double-flange self-cleaning flushing device is proposed. The controller controls the backflush solenoid valve and the drain solenoid valve to achieve automatic control, while the backflush manual valve and the downstream drain manual valve provide manual control. The double-flange level gauge can be cleaned without stopping the hexane separator to replace the liquid level, ensuring accurate measurement of the liquid level in the hexane separator. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a dual-flange self-cleaning flushing device. The device automatically controls the backflush solenoid valve and the drain solenoid valve through a controller, and manually controls them through a backflush manual valve and a downstream drain manual valve. It can clean the dual-flange level gauge without stopping the hexane separator tank to replace it, ensuring accurate measurement of the hexane separator tank level.

[0005] The technical solution adopted by this utility model to solve its technical problem is a double-flange self-cleaning flushing device, including a sludge tank body. The top of the sludge tank body is sequentially provided with a negative pressure side flushing ring and a double-flange level gauge negative pressure side flange. The bottom of the sludge tank body is sequentially provided with a positive pressure side flushing ring and a level gauge positive pressure side flange. One side of the positive pressure side flushing ring is connected to a drain U-shaped pipe through a terminal connector connected to its outlet. The bottom two ends of the drain U-shaped pipe are respectively provided with a downstream drain manual valve and a drain solenoid valve.

[0006] A rectangular pipe is provided at one end of the sludge tank body, and a backflush manual valve and a backflush solenoid valve are respectively provided at both ends of the bottom of the rectangular pipe.

[0007] By adopting the above technical solution, the positive pressure side flange of the level gauge and the negative pressure side flange of the double-flange level gauge and the transmitter module are combined to form a double-flange level gauge. Opening the backflush manual valve and the downstream drain manual valve can be used for manual flushing and draining, while opening the backflush solenoid valve and the drain solenoid valve can be used for automatic flushing and draining.

[0008] Specifically, a storage tank flange is provided on the top surface of the sludge tank body, and the negative pressure side flushing ring and the negative pressure side flange of the double flange level gauge are arranged sequentially from bottom to top on the top of the storage tank flange, and the negative pressure side flushing ring and the negative pressure side flange of the double flange level gauge are fixed to the storage tank flange by bolts.

[0009] Specifically, the bottom surface of the sludge tank body is provided with a tank flange opening, and the positive pressure side flushing ring and the positive pressure side flange of the level gauge are arranged sequentially from top to bottom at the bottom of the tank flange opening.

[0010] Specifically, the top of the rectangular tube is provided with an air source pipe, and the two ends of the outer side of the air source pipe are provided with pressure reducing valves, filters and air inlet manual valves. The bottom end of the rectangular tube is connected to the top of the rectangular tube through an air source pipe tee.

[0011] Specifically, a transmitter module is provided between the positive pressure side flange of the level gauge and the negative pressure side flange of the double-flange level gauge. The positive pressure side flange of the level gauge, the negative pressure side flange of the double-flange level gauge, and the transmitter module together form a double-flange level gauge.

[0012] Specifically, a controller is provided at one end of the sludge tank body, and the current output terminal of the controller is electrically connected to the current input terminals of the backflush solenoid valve and the drain solenoid valve through a power line.

[0013] The beneficial effects of this utility model are:

[0014] The dual-flange self-cleaning flushing device described in this utility model allows for on-site opening of the backflush manual valve or, via controller control, the opening of the flushing solenoid valve. This enables high-pressure nitrogen gas to purge and flush the positive-pressure side flange of the dual-flange level gauge through the connecting pipe and the positive-pressure side flushing ring. Sewage is then discharged via the downstream sewage discharge manual valve of the sewage discharge U-shaped pipe or via controller control of the sewage discharge solenoid valve. This eliminates the need to shut down the device, disconnect and replace the hexane separator, and then clean the dual-flange level gauge diaphragm box. The cleaning method is redundantly designed, allowing for on-site manual flushing and sewage discharge, or control of the backflush solenoid valve and sewage discharge solenoid valve via controller. It can be easily operated by one person, saving time and manpower. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] In the diagram: 1. Waste oil tank body; 2. Pressure reducing valve filter; 3. Backflush solenoid valve; 4. Backflush manual valve; 5. Check valve; 6. Positive pressure side flushing ring; 7. Tank flange; 8. Level gauge positive pressure side flange; 9. Double flange level gauge negative pressure side flange; 10. Negative pressure side flushing ring; 11. Tank flange; 12. Transmitter module; 13. Sewage discharge solenoid valve; 14. Downstream sewage discharge manual valve; 15. Air inlet manual valve; 16. Controller; 17. Air source pipe; 18. Connecting pipe; 19. Bolts; 20. Terminal connector; 21. Air source pipe tee; 22. Rectangular pipe; 23. Sewage discharge U-shaped pipe. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Automatic control is achieved by controlling the backflush solenoid valve and the drain solenoid valve via a controller, while manual control is achieved via the backflush manual valve and the downstream drain manual valve. This allows for cleaning of the dual-flange level gauge without shutting down the hexane separator tank for replacement, ensuring accurate measurement of the hexane separator tank level. Figure 1 As shown, the present invention provides a double-flange self-cleaning flushing device, which includes a sludge tank body 1. The top of the sludge tank body 1 is sequentially provided with a negative pressure side flushing ring 10 and a double-flange level gauge negative pressure side flange 9. The bottom of the sludge tank body 1 is sequentially provided with a positive pressure side flushing ring 6 and a level gauge positive pressure side flange 8. One side of the positive pressure side flushing ring 6 is connected to a drain U-shaped pipe 23 through a terminal connector 20 connected to its outlet. The bottom two ends of the drain U-shaped pipe 23 are respectively provided with a downstream drain manual valve 14 and a drain solenoid valve 13.

[0020] A rectangular pipe 22 is provided at one end of the sludge tank body 1, and a backflush hand valve 4 and a backflush solenoid valve 3 are respectively provided at both ends of the bottom of the rectangular pipe 22.

[0021] In use, the positive pressure side flange 8 of the level gauge, the negative pressure side flange 9 of the double flange level gauge, and the transmitter module 12 form a double flange level gauge. Opening the backflush manual valve 4 and the downstream drain manual valve 14 allows for manual flushing and drainage. Opening the backflush solenoid valve 3 and the drain solenoid valve 13 allows for automatic flushing and drainage.

[0022] For example, such as Figure 1 As shown, the present invention also includes a storage tank flange 11 provided on the top surface of the sludge tank body 1, and the negative pressure side flushing ring 10 and the double flange level gauge negative pressure side flange 9 are arranged sequentially from bottom to top on the top of the storage tank flange 11, and the negative pressure side flushing ring 10 and the double flange level gauge negative pressure side flange 9 are fixed to the storage tank flange 11 by bolts 19.

[0023] In use, bolts 19 secure the negative pressure side flange 9 and the negative pressure side flushing ring 10 of the double flange level gauge to the tank flange 11.

[0024] For example, such as Figure 1 As shown, the present invention also includes a storage tank flange 7 provided on the bottom surface of the sludge tank body 1, and the positive pressure side flushing ring 6 and the level gauge positive pressure side flange 8 are arranged sequentially from top to bottom at the bottom of the storage tank flange 7.

[0025] During use, the positive pressure side flange 8 of the level gauge is fixed to the tank flange port 7 via the positive pressure side flushing ring 6.

[0026] For example, such as Figure 1 As shown, the present invention also includes an air source pipe 17 at the top of the rectangular pipe 22, a pressure reducing valve filter 2 and an air inlet hand valve 15 at both ends of the outer side of the air source pipe 17, and the bottom end of the rectangular pipe 22 is connected to the top of the rectangular pipe 22 through an air source pipe tee 21.

[0027] When in use, open the air inlet hand valve 15 to allow high-pressure nitrogen to flow through the gas source pipe 17 into the rectangular through pipe 22. The pressure reducing valve filter 2 can filter the high-pressure nitrogen.

[0028] For example, such as Figure 1 As shown, the present invention also includes a transmitter module 12 disposed between the positive pressure side flange 8 of the level gauge and the negative pressure side flange 9 of the double flange level gauge. The positive pressure side flange 8 of the level gauge, the negative pressure side flange 9 of the double flange level gauge, and the transmitter module 12 together form a double flange level gauge.

[0029] When in use, the dual-flange level gauge design ensures that the level gauge is synchronized with the liquid level inside the sludge tank. The liquid level is calculated by measuring the pressure difference generated by the two flanges with high and low pressure.

[0030] For example, such as Figure 1 As shown, the present invention also includes a controller 16 provided at one end of the sludge tank body 1, and the current output terminal of the controller 16 is electrically connected to the current input terminal of the backflush solenoid valve 3 and the drain solenoid valve 13 through a power line.

[0031] During use, the backflush solenoid valve 3 and the drain solenoid valve 13 can be controlled by the controller 16.

[0032] When this utility model is in use, the high-pressure nitrogen gas for flushing enters the rectangular pipe 22 through the air inlet hand valve 15, the pressure reducing valve filter 2, the air source pipe 17 and the air source pipe tee 21. At this time, the high-pressure nitrogen gas can be opened by opening the backflush hand valve 4 on site or by controlling the flushing solenoid valve 3 to open through the controller 16.

[0033] High-pressure nitrogen gas is used to purge and flush the positive pressure side flange 8 of the double flange level gauge through the connecting pipe 18 and the positive pressure side flushing ring 6. The one-way valve 5 on the outside of the connecting pipe 18 can prevent the high-pressure nitrogen gas from flowing back.

[0034] Sewage can be discharged through the sewage discharge manual valve 14 downstream of the sewage discharge U-tube 23 or by controlling the opening of the sewage discharge solenoid valve 13 through the controller 16.

[0035] High-pressure flushing nitrogen gas flushes and blows away the debris accumulated on the surface of the diaphragm box of the positive pressure side flange 8 of the level gauge through the positive pressure side flushing ring 6, eliminating the interference of debris on the pressure difference and ensuring the accurate measurement of the dual flange level gauge. It eliminates the need to shut down the unit, cut off and replace the hexane separator tank and then clean the dual flange level gauge diaphragm box, solving the practical problem of inconvenient disassembly and cleaning that affects production safety.

[0036] The dual-flange level gauge consists of a positive pressure flange 8 and a negative pressure flange 9, which are connected to the gas phase and liquid phase spaces of the sludge tank body 1, respectively. The negative pressure flange 9 is connected to the gas phase, and the positive pressure flange 8 is connected to the liquid phase, ensuring that the level gauge is synchronized with the liquid level in the sludge tank body 1. The liquid level height is calculated by measuring the pressure difference generated by the two flanges.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-flange self-cleaning flushing device, characterized in that, The system includes a sludge tank body (1), on the top of which a negative pressure side flushing ring (10) and a double flange level gauge negative pressure side flange (9) are arranged in sequence. On the bottom of the sludge tank body (1), a positive pressure side flushing ring (6) and a level gauge positive pressure side flange (8) are arranged in sequence. A drain U-shaped pipe (23) is connected to one side of the positive pressure side flushing ring (6) through a terminal connector (20) connected to its outlet. Downstream drain manual valve (14) and drain solenoid valve (13) are respectively arranged at both ends of the bottom of the drain U-shaped pipe (23). A rectangular pipe (22) is provided at one end of the sludge tank body (1), and a backflush hand valve (4) and a backflush solenoid valve (3) are respectively provided at both ends of the bottom of the rectangular pipe (22).

2. The double-flange self-cleaning flushing device according to claim 1, characterized in that, The top surface of the sludge tank body (1) is provided with a tank flange (11). The negative pressure side flushing ring (10) and the double flange level gauge negative pressure side flange (9) are arranged sequentially from bottom to top on the top of the tank flange (11), and the negative pressure side flushing ring (10) and the double flange level gauge negative pressure side flange (9) are fixed to the tank flange (11) by bolts (19).

3. The double-flange self-cleaning flushing device according to claim 1, characterized in that, The bottom surface of the sludge tank body (1) is provided with a tank flange opening (7), and the positive pressure side flushing ring (6) and the positive pressure side flange (8) of the level gauge are arranged from top to bottom at the bottom of the tank flange opening (7).

4. The double-flange self-cleaning flushing device according to claim 1, characterized in that, The top of the rectangular tube (22) is provided with an air source pipe (17), and the two ends of the outer side of the air source pipe (17) are provided with a pressure reducing valve filter (2) and an air inlet hand valve (15). The bottom end of the rectangular tube (22) is connected to the top of the rectangular tube (22) through an air source pipe tee (21).

5. A double-flange self-cleaning flushing device according to claim 1, characterized in that, A transmitter module (12) is provided between the positive pressure side flange (8) of the level gauge and the negative pressure side flange (9) of the double flange level gauge. The positive pressure side flange (8) of the level gauge and the negative pressure side flange (9) of the double flange level gauge together with the transmitter module (12) form a double flange level gauge.

6. The double-flange self-cleaning flushing device according to claim 1, characterized in that, The sludge tank body (1) is equipped with a controller (16) at one end. The current output terminal of the controller (16) is electrically connected to the current input terminal of the backflush solenoid valve (3) and the sewage discharge solenoid valve (13) through a power line.

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