Oil separation and lifting integrated equipment with backwashing device

Abstract

The utility model relates to oil separation and lifting integrated equipment with a backwashing device, which belongs to the field of restaurant wastewater treatment equipment and comprises a slag removal device A, an oil-water separation device B and a wastewater lifting pump station C, the deslagging device A comprises a water collecting tank; one end of the spiral pusher is positioned in the water collecting tank, and the other end extends out of the water collecting tank; a feeding pipe is fixed to the upper end of the end, located in the water collecting tank, of the spiral pusher. A thin hole is formed in the lower end of the spiral pusher shell; the liquid discharge pipe is fixed at the lower end of the water collection tank; a brush is fixed to the edge of a spiral blade of the spiral pusher. The wastewater lifting pump station C comprises a sewage lifting box; the coupling device is positioned in the sewage lifting box; the coupling device is connected with the sewage pump; the water outlet pipe is fixed at the outlet end of the coupling device; the upper end of the water outlet pipe extends out of the sewage lifting box; the exhaust pipe is fixedly connected with the side wall of the water outlet pipe; one end of the drainage pipe away from the water outlet pipe faces the inner bottom wall of the sewage lifting box. According to the device, the condition that solid residues are accumulated in the sewage lifting box can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of catering wastewater treatment equipment, and particularly relates to oil separation and lifting integrated equipment with a backwashing device. Background Art

[0002] With the development of urbanization in my country, large-scale food courts, such as complexes, hotels, and food courts, are increasingly being built. For environmental protection purposes, wastewater from restaurants must undergo oil-water separation before being discharged into the municipal pipeline network. Oil-water separators have evolved through brick-built grease traps, stainless steel buried grease traps, stainless steel above-ground grease traps, and integrated stainless steel oil-water separators and lifts, ultimately becoming the mainstream integrated oil-water separator and lift system.

[0003] There are still some tiny solid residues in the wastewater after the oil-water separation device. Therefore, after long-term use, solid residues will still remain on the bottom wall of the wastewater lifting pump station. After a long time, the solid residues will accumulate on the inner wall of the box and clump together, making it difficult to clean, affecting the use of the wastewater lifting pump station box. In addition, there will be a small amount of floating objects in the wastewater, which will float in the wastewater lifting pump station box and affect the wastewater lifting pump station box. Utility Model Content

[0004] The utility model discloses an integrated oil separation and lifting device with a backwashing device, which can process solid residues in a wastewater lifting pump station box.

[0005] The utility model is an integrated oil separation and lifting device with a backwash device, comprising a slag removal device A, an oil-water separation device B and a wastewater lifting pump station C;

[0006] Slag removal device A includes:

[0007] water collection tank;

[0008] The screw pusher has one end in the water collection tank and the other end extending out of the water collection tank; a feed pipe is fixedly connected to the upper end of the screw pusher in the water collection tank, the feed pipe is connected to the screw pusher, and the feed pipe is connected to the catering wastewater conveying pipe of the catering venue; the slag outlet of the screw pusher is located outside the water collection tank; a plurality of fine holes are opened at the lower end of the screw pusher shell, and the fine holes are in the water collection tank;

[0009] The drain pipe is fixed at the lower end of the water collecting tank and is used to connect and communicate with the oil-water separator B;

[0010] A brush is fixed on the edge of the spiral blade of the screw conveyor, and the brush abuts against the inner wall of the outer shell of the screw conveyor;

[0011] Wastewater lifting pump station C includes:

[0012] Sewage lifting tank, connected to oil-water separation device B;

[0013] A coupling device is located in the sewage lifting tank; the coupling device is connected to the sewage pump;

[0014] The outlet pipe is fixed on the outlet end of the coupling device; the upper end of the outlet pipe extends out of the sewage lifting tank, and the outlet pipe is used to connect with the municipal pipe network;

[0015] The exhaust pipe is fixedly connected to the side wall of the water outlet pipe and is communicated with the water outlet pipe; one end of the drain pipe away from the water outlet pipe is directed toward the inner bottom wall of the sewage lifting box.

[0016] Use a brush to minimize the gap between the spiral blades of the auger and the inner wall of the housing, preventing small solid residues from flowing into the pores and subsequently entering the sewage lifting tank. This naturally reduces the accumulation of small residues in the sewage lifting tank. Then, by installing an exhaust pipe on the outlet pipe, when the sewage pump is operating normally, a portion of the water will return to the sewage lifting tank through the exhaust pipe to backflush the residue in the sewage lifting tank. The residue will be flushed up and then sucked into the sewage pump, and finally discharged into the municipal pipe network, thus minimizing the accumulation of residues in the sewage lifting tank.

[0017] Furthermore, a valve is installed on the exhaust pipe, and the valve is normally open.

[0018] Furthermore, the inner diameter of the exhaust pipe is smaller than the inner diameter of the water outlet pipe.

[0019] Assume that the inner diameter of the exhaust pipe is equal to the inner diameter of the water outlet pipe. At this time, the flow velocity in the exhaust pipe is A. Assume that the inner diameter of the exhaust pipe is smaller than the inner diameter of the water outlet pipe. At this time, the flow velocity in the exhaust pipe is B. According to Bernoulli's principle, B is greater than A. Therefore, the inner diameter of the exhaust pipe is designed to be smaller than the inner diameter of the water outlet pipe.

[0020] Furthermore, the check valve is located outside the sewage lifting tank.

[0021] It can prevent the sewage in the sewage lifting tank from contacting the check valve, thereby extending the service life of the check valve and making it easier for the operator to inspect and repair the check valve.

[0022] Furthermore, the diameter of the pores is 2-4 mm.

[0023] The diameter of the pores is 2-4mm, which is relatively small. Large solid residues cannot pass through the pores, which greatly prevents large solid residues from being discharged from the screw pusher shell and prevents large solid residues from entering the sewage lifting tank. Large solid residues are not easily washed up by the water diverted in the exhaust pipe and are not easily captured by the water inlet end of the sewage pump, which will cause large solid residues to remain in the sewage lifting tank. Beneficial effects

[0024] The 2-4mm fine holes are set to prevent larger solid residues from entering the sewage lifting tank, and to avoid the situation where the water in the exhaust pipe cannot flush out the larger solid residues due to excessive size, ensuring that the water inlet end of the sewage pump can suck in the flushed solid residues.

[0025] The provision of brushes can prevent smaller-sized solid residues from flowing into the fine holes as much as possible, thereby reducing the possibility of solid residues entering the sewage lifting tank.

[0026] An exhaust pipe is provided to flush the solid residue in the sewage lifting tank so that the solid residue cannot accumulate on the bottom wall of the sewage lifting tank. Instead, the solid residue is flushed up and sucked into the water inlet end of the sewage pump, thereby being discharged from the sewage lifting tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the processing device;

[0028] Figure 2 It is a top view of the deslagging device A and the oil-water separation device B;

[0029] Figure 3 It is a structural schematic diagram of the slag removal device A;

[0030] Figure 4 It is a structural diagram of wastewater lifting pump station C;

[0031] Figure 5 This is the left view of wastewater lift pump station C.

[0032] 1. Water collecting tank; 2. Screw pusher; 3. Slag collecting bucket; 4. Slag outlet; 5. Feed pipe; 6. Drain pipe; 7. Sewage lifting tank; 8. Top bracket; 9. Slide rail; 10. Connecting piece; 11. Coupling base; 12. Water outlet pipe; 13. Main water pipe; 14. Check valve; 15. Exhaust pipe; 16. Valve; 17. Sewage pump. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] See Figure 1 , oil separation and lifting integrated equipment with backwashing device, including slag removal device A, oil-water separation device B and wastewater lifting pump station C.

[0035] See Figure 2 and Figure 3 , the slag removal device A includes:

[0036] Water collecting tank 1;

[0037] Auger 2, which belongs to the prior art, consists of spiral blades welded to a shaft and a housing. The housing of auger 2 is fixedly connected to water collection tank 1. The right end of auger 2 is lowered and the left end is raised. The motor driving auger 2 is located at its left end. The right end of auger 2 is located within water collection tank 1, while the left end of auger 2 extends out of the water collection tank. A slag outlet 4 is provided at the lower end of the left end of the housing of auger 2. Slag outlet 4 is located outside water collection tank 1. Solid residue discharged from slag outlet 4 falls by gravity into a slag collection bucket 3 located outside water collection tank 1.

[0038] A feed pipe 5 is fixedly connected to the upper end of the right end shell of the screw pusher 2. The feed pipe 5 is connected to the right end of the screw pusher 2. The feed pipe 5 extends out of the water collection tank 1 and is connected and connected to the catering wastewater conveying pipe of the catering venue. The catering wastewater of the catering venue can be input into the feed pipe 5 from the corresponding catering wastewater conveying pipe and finally enter the right end of the screw pusher 2. After the spiral blades of the screw pusher 2 rotate, the catering wastewater is transported from the right end to the left end. The liquid in the catering wastewater is squeezed during the transportation process and discharged from several fine holes opened at the bottom end of the shell of the screw pusher 2. The fine holes are in the water collection tank 1 and have a diameter of 2-4mm. The liquid eventually leaks into the water collection tank 1 and is collected by the water collection tank 1; the solid residue is discharged from the water collection tank 1 from the slag outlet 4 and falls into the slag collecting bucket 3 directly below the slag outlet 4. The slag collecting bucket 3 is outside the water collection tank 1, which is convenient for replacement after the slag collecting bucket 3 is full.

[0039] A stainless steel brush is welded to the edge of the spiral blade of the spiral pusher 2 to fill the 1-3mm gap between the spiral blade and the outer shell. The brush abuts against the inner wall of the outer shell of the spiral pusher 2 to avoid as much as possible the flow of small solid residues in the outer shell of the spiral pusher 2 into the pores. When the brush rotates with the axis of the spiral pusher 2, it has a certain cleaning effect on the pores, and can also effectively push the solid residues, thereby improving the anti-clogging ability of the pores.

[0040] Drain pipe 6 is fixedly mounted at the lower end of water collection tank 1 and is capable of draining the collected liquid from water collection tank 1. Liquid flowing from drain pipe 6 flows naturally due to gravity toward oil-water separator B. Oil-water separator B is prior art and has been disclosed in our patents, so it will not be described in detail here. Oil-water separator B is used to separate the oil and water flowing from drain pipe 6 based on the principle of density difference. The water is then pumped separately into wastewater lift station C, while the oil is collected separately in an oil collection drum.

[0041] See Figure 4 and Figure 5 , wastewater lifting pump station C includes:

[0042] The sewage lifting tank 7 has a water inlet pipe fixedly mounted on its left outer wall for connecting to the oil-water separator B. The pump in the oil-water separator B can introduce the catering wastewater in the oil-water separator B from the water inlet pipe into the sewage lifting tank 7. A drain pipe is fixedly mounted on the right outer wall of the sewage lifting tank 7. After opening the drain valve on the drain pipe, the catering wastewater remaining at the bottom of the sewage lifting tank 7 can be discharged from the sewage lifting tank 7.

[0043] Two coupling devices are provided inside the sewage lifting box 7, and the coupling devices include:

[0044] The top bracket 8 is mounted on the inner wall of the sewage lifting box 7 by bolts.

[0045] The slide rail 9 is fixed on the top bracket 8, and the length direction of the slide rail 9 is arranged vertically.

[0046] The connecting piece 10 is slidably mounted on the slide rail 9 and can slide along the length direction of the slide rail 9. The sewage pump 17 is fixedly connected to the connecting piece 10, and the sewage pump 17 and the connecting piece 10 slide along the slide rail 9 as a whole.

[0047] The coupling base 11 is fixed to the lower end of the slide rail 9 and can be installed on the inner bottom surface of the sewage lifting tank 7 via bolts. When the connecting piece 10 and the sewage pump 17 move as a whole, and when the connecting piece 10 is snapped onto the coupling base 11, the outlet flange of the sewage pump 17 fits tightly against the inlet of the coupling base 11. At this time, the lower end of the sewage pump 17 is placed on the inner bottom surface of the sewage lifting tank 7, ensuring stable communication between the outlet of the sewage pump 17 and the inlet of the coupling base 11. Although the sewage pump 17 is not directly and firmly connected to the coupling base 11, the close fit ensures that when the sewage pump 17 pumps sewage, the sewage reaches the outlet of the sewage pump 17 from the inlet of the sewage pump 17, enters the inlet of the coupling base 11 through the outlet of the sewage pump 17, and is ultimately discharged from the outlet of the coupling base 11.

[0048] When inspecting the sewage pump 17, it is only necessary to lift the sewage pump 17 upwards to separate the sewage pump 17 and the connecting piece 10 as a whole from the coupling base 11. The connecting piece 10 and the sewage pump 17 are moved as a whole along the slide rail 9 and raised to a height at which the maintenance personnel can inspect and repair the sewage pump 17. Because the sewage pump 17 is not directly and firmly connected to the coupling base 11, it is convenient to lift the sewage pump 17 for easy inspection.

[0049] The outlet end of the coupling base 11 of each coupling device is connected to a pipeline assembly, which includes:

[0050] In this embodiment, the outlet pipe 12 is vertically arranged. The lower end of the outlet pipe 12 is connected to the outlet pipe of the coupling base 11 via a flange; the upper end of the outlet pipe 12 passes through the sewage lifting tank 7. The outlet pipes 12 of the two pipeline assemblies are connected to the main water pipe 13, which is connected to the municipal pipeline network. The water from the two outlet pipes 12 is combined in the main water pipe 13 and ultimately flows to the municipal pipeline network.

[0051] The check valve 14 is installed on the water outlet pipe 12. Figure 1 From a different perspective, the check valve 14 is used to ensure that the water in the outlet pipe 12 can only flow from the lower end of the outlet pipe 12 to the upper end of the outlet pipe 12, and cannot flow from the upper end of the outlet pipe 12 to the lower end of the outlet pipe 12. In this embodiment, the check valve 14 is located outside the sewage lifting tank 7, so that the check valve 14 has no contact with the sewage, which has the advantages of convenient maintenance and extended service life.

[0052] An exhaust pipe 15 is fixedly connected to the side of the outlet pipe 12. In this embodiment, the upper end of the exhaust pipe 15 is connected to the outlet pipe 12, and the lower end of the exhaust pipe 15 faces the inner bottom wall of the sewage lifting tank 7. Because dirt easily accumulates on the inner bottom wall of the sewage lifting tank 7, the lower end of the exhaust pipe 15 faces the inner bottom wall of the sewage lifting tank 7. The water flowing out of the exhaust pipe 15 is used to flush the inner bottom wall of the sewage lifting tank 7, which improves the flushing effect of dirt and prevents dirt from accumulating on the inner bottom wall of the sewage lifting tank 7. The flushed dirt can be captured by the sewage pump 17 and ultimately discharged into the municipal pipe network. In addition, the water flowing out of the exhaust pipe 15 will stir the water in the sewage lifting tank 9, causing floating objects on the water surface of the sewage lifting tank 9 to mix with the water. These objects can also be captured by the sewage pump 17 and discharged from the sewage lifting tank 9 and ultimately enter the municipal pipe network.

[0053] In this embodiment, the inner diameter of the exhaust pipe 15 is smaller than that of the outlet pipe 12. According to Bernoulli's principle, assuming the inner diameter of the exhaust pipe 15 is equal to that of the outlet pipe 12, the water flow rate in the exhaust pipe 15 is A. In this embodiment, the inner diameter of the exhaust pipe 15 is smaller than that of the outlet pipe 12, and the water flow rate in the exhaust pipe 15 is B. Therefore, B is greater than A. A faster flow rate effectively flushes dirt from the inner bottom wall of the sewage lifting tank 7.

[0054] A valve 16 is installed on the exhaust pipe 15, but the valve 16 is normally open.

[0055] As sewage pump 17 discharges wastewater from sewage lift tank 7 into the municipal pipe network, a portion of the sewage at the outlet of sewage pump 17 flows from the lower end of outlet pipe 12 to exhaust pipe 15 and out from the end of exhaust pipe 15 away from outlet pipe 12. This portion of sewage water flushes the waste, loosening it from the bottom wall of sewage lift tank 7. The loosened waste can then be sucked into sewage pump 17 and ultimately discharged into the municipal pipe network. During non-maintenance periods, valve 16 remains open. The water flowing from exhaust pipe 15 flushes the waste in sewage lift tank 9 and also mixes floating debris into the water, making it easier for sewage pump 17 to capture and discharge it from sewage lift tank 9. When the sewage pump needs to be repaired, valve 16 is manually closed to prevent sewage from roaming around in sewage lift tank 9 while the sewage pump is being repaired.

[0056] A stainless steel brush is also used to fit the inner wall of the outer shell of the screw pusher 2 as closely as possible, effectively pushing the fine solid residue in the outer shell of the screw pusher 2, avoiding the fine solid residue from flowing through the fine holes to the sewage lifting tank 7 as much as possible, and also reducing the accumulation of solid residue in the sewage lifting tank 7.

[0057] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. Oil separation and lifting integrated equipment with backwashing device, characterized in that: It includes a slag removal device A, an oil-water separation device B and a wastewater lifting pump station C; Slag removal device A includes: Water collecting tank (1); The screw pusher (2) has one end located in the water collecting tank (1) and the other end extending out of the water collecting tank (1); a feed pipe (5) is fixedly connected to the upper end of the end of the screw pusher (2) located in the water collecting tank (1), the feed pipe (5) is in communication with the screw pusher (2), and the feed pipe (5) is connected to a catering wastewater delivery pipe of a catering establishment; a slag outlet (4) of the screw pusher (2) is located outside the water collecting tank (1); a plurality of fine holes are formed on the lower end of the outer shell of the screw pusher (2), and the fine holes are located in the water collecting tank (1); A drain pipe (6) is fixed to the lower end of the water collecting tank (1) and is used to connect and communicate with the oil-water separation device B; A brush is fixed to the edge of the spiral blade of the screw pusher (2), and the brush abuts against the inner wall of the outer shell of the screw pusher (2); Wastewater lifting pump station C includes: A sewage lifting tank (7) is connected to the oil-water separation device B; A coupling device is located in the sewage lifting tank (7); the coupling device is connected to the sewage pump (17); The outlet pipe (12) is fixed to the outlet end of the coupling device; the upper end of the outlet pipe (12) extends out of the sewage lifting tank (7), and the outlet pipe (12) is used to communicate with the municipal pipe network; The exhaust pipe (15) is fixedly connected to the side wall of the water outlet pipe (12) and communicates with the water outlet pipe (12); one end of the drain pipe away from the water outlet pipe (12) faces the inner bottom wall of the sewage lifting box (7).

2. The oil separation and lifting integrated equipment with backwashing device according to claim 1 is characterized in that: A valve (16) is installed on the exhaust pipe (15), and the valve (16) is normally open.

3. The oil separation and lifting integrated equipment with backwashing device according to claim 1 is characterized in that: The inner diameter of the exhaust pipe (15) is smaller than the inner diameter of the water outlet pipe (12).

4. The oil separation and lifting integrated equipment with backwashing device according to claim 1 is characterized in that: A check valve (14) is installed on the water outlet pipe (12), and the check valve (14) is located outside the sewage lifting tank (7).

5. The oil separation and lifting integrated equipment with backwashing device according to claim 1 is characterized in that: The diameter of the pores is 2-4 mm.

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