CN220223721U - Kitchen oil-water separator with two-stage separation - Google Patents

Abstract

The utility model discloses a two-stage separation kitchen oil-water separator, and belongs to the technical field of kitchen wastewater treatment. The device comprises a first-stage separation tank, a filter tank, a first-stage sewage outlet, a heater, a first-stage oil drain outlet, a filtrate pipe, a clear water outlet, a visual window, a second-stage separation tank, a second-stage sewage outlet, an oil overflow outlet, a second-stage oil drain outlet and an overflow structure, wherein the visual window is arranged on the front side of the first-stage separation tank, the filtrate pipe is positioned at the rear of the second-stage separation tank, the oil overflow outlet is arranged on the front side of the second-stage separation tank, the second-stage oil drain outlet is positioned at the rear of the second-stage separation tank and is lower than the oil overflow outlet, and the first-stage oil drain outlet is lower than the oil overflow outlet; the overflow structure comprises an overflow pipe and an oil separation pipe; the lower end of the overflow pipe downwards penetrates out of the primary separation box, and the upper end of the overflow pipe is higher than the visible window and lower than the oil overflow port; a gap is arranged between the oil separation pipe and the overflow pipe, the lower end of the oil separation pipe and the bottom of the primary separation box are provided with gaps, and the upper end of the oil separation pipe is higher than the oil overflow port; when in initial use, the first-stage separation box is filled with clean water and the liquid level reaches the visible window.

Description

Kitchen oil-water separator with two-stage separation

Technical Field

The utility model belongs to the technical field of kitchen wastewater treatment, and particularly relates to a kitchen oil-water separator with secondary separation.

Background

With the rapid development of social economy, various catering institutions such as hotels and hotels are increasingly enlarged, the quantity is rapidly increased, the waste water production is also increased, most oily sewage contains more floaters and suspended matters, and some oily sewage even contains a large amount of sediment, residual meal and other impurities, and the pollutants in the waste water comprise chemical oxygen demand COD, BOD, SS animals and plants, detergents and the like.

In the prior art, a kitchen oil-water separator can be used for realizing solid-liquid separation and oil-water separation. In the prior art, solid-liquid separation is carried out through a filter tank, and oil-water separation is carried out on filtrate through an oil-water separator. The existing kitchen oil-water separator comprises a separation tank, a filter tank at the top of the separation tank, a drain outlet at the bottom of the separation tank (for discharging water phase and drain), a heater at the lower part of the separation tank, an oil drain outlet at the upper part of the separation tank (for discharging oil phase), a filtrate pipe at the bottom of the filter tank and downwards to the lower part of the separation tank, and the like.

The patent with the application number of CN201520406021.3 discloses an oil-water separator for catering, which comprises a first oil-water separation tank and a second oil-water separation tank, wherein the first oil-water separation tank and the second oil-water separation tank are directly connected by a pipeline; a filter hopper is embedded at the upper end of the first oil-water separation box, a filter screen is arranged below the filter hopper, and a drain pipe is connected to one side of the bottom of the first oil-water separation box; the top of the second oil-water separation box is provided with a condenser, and one side of the bottom of the second oil-water separation box is connected with another drain pipe.

The technical scheme disclosed in the patent with the application number of CN201210089165.1 comprises a box body, an oil-water mixing inlet is formed in the box body, an outlet end of the oil-water mixing inlet is formed in the upper side of a filter screen in the box body, an oil suction port is formed in the upper side of the filter screen, an oil area and a water area are sequentially formed in the lower side of the filter screen in the box body, a drain outlet is formed in the lower side of one side opposite to the oil-water mixing inlet, an oil-water separator is arranged above the drain outlet and in the box body, a separator inlet is formed in the lower portion of the oil-water separator, an exhaust port is formed in the top of the oil-water separator, the exhaust port is connected with one side of the filter screen, the lower portion of the filter screen is arranged on one side of the oil-water separator, and a drain outlet is further formed in one side of the oil-water separator.

When the applicant adopts the existing oil-water separator, the fact that the oil-water mixture in the separating box is disturbed by the filtrate output by the filtrate pipe causes poor oil-water separation effect is found.

Disclosure of Invention

In order to solve the problems, the embodiment of the utility model provides a kitchen oil-water separator with two-stage separation, which adopts various means to reduce disturbance of filtrate water mixture output by a filtrate pipe so as to improve the oil-water separation effect. The technical scheme is as follows:

the embodiment of the utility model provides a kitchen oil-water separator with two-stage separation, which comprises a first-stage separation tank 1, a filter tank 2 at the top of the first-stage separation tank 1, a first-stage drain outlet 3 at the bottom of the first-stage separation tank 1, a heater 4 at the lower part of the first-stage separation tank 1, a first-stage drain outlet 5 at the upper part of the first-stage separation tank 4, a filtrate pipe 6 at the bottom of the filter tank 2 and downwards to the lower part of the first-stage separation tank 1, a clear water inlet 7 above the filter tank 2, a visual window 8 at the middle part of the first-stage separation tank 1, a second-stage separation tank 9 at the upper part of the first-stage separation tank 1, a second-stage drain outlet 10 at the bottom of the second-stage separation tank 9 and outwards penetrating through the first-stage separation tank 1, a second-stage drain outlet 12 at the upper part of the second-stage separation tank 9 and an overflow structure which is outwards penetrating through the first-stage separation tank 1 and is positioned in the second-stage separation tank 1, wherein the visual window 8 is positioned at the front side of the first-stage separation tank 1, the filtrate pipe 6 is positioned at the rear of the second-stage separation tank 9, the second-stage drain outlet 11 is positioned at the front side of the second-stage separation tank 9, and the overflow outlet 11 is positioned at the lower side of the second-stage drain outlet 11 than the first-stage drain outlet 11; the overflow structure comprises an overflow pipe 13 arranged at the bottom of the primary separation tank 1 and an oil separation pipe 14 sleeved outside the overflow pipe 13; the lower end of the overflow pipe 13 downwards penetrates out of the primary separation tank 1, and the upper end of the overflow pipe is higher than the visible window 8 and lower than the oil overflow port 11; a gap is formed between the oil separation pipe 14 and the overflow pipe 13, a gap is formed between the lower end of the oil separation pipe and the bottom of the primary separation box 1, and the upper end of the oil separation pipe is higher than the oil overflow port 11; when in initial use, the primary separation box 1 is filled with clean water and the liquid level reaches the visible window 8; oil-water separation; the oil phase of the primary separation tank 1 enters the secondary separation tank 9 from the overflow port 11, and the water phase overflows to the overflow pipe 13.

Specifically, the secondary separation tank 9 in the embodiment of the utility model is fixed on the left side or the right side of the primary separation tank 1, and the overflow structure is positioned on the other side of the primary separation tank 1; the primary sewage outlet 3, the primary oil drain port 5 and the secondary oil drain port 12 are all positioned on one side of the primary separation tank 1 far away from the overflow structure, and control valves are arranged on the primary sewage outlet, the primary oil drain port 5 and the secondary oil drain port 12.

Preferably, the front side of the primary separation tank 1 in the embodiment of the utility model is provided with a buffer tank 15 right below the filtrate pipe 6, and the lower end of the filtrate pipe 6 is positioned in the buffer tank 15.

Further, a drain pipe 16 is arranged below the primary separation tank 1 in the embodiment of the utility model, a control valve is arranged on the primary drain outlet 3 and is connected with the drain pipe 16, and the lower end of the overflow pipe 13 is connected with the drain pipe 16.

The top of the secondary separation box 9 in the embodiment of the utility model is open, the bottom of the secondary separation box is conical, and the secondary separation box is a metal box.

The oil separation pipe 14 in the embodiment of the utility model is a circular pipe coaxially arranged with the overflow pipe 13, the lower end of the oil separation pipe is positioned below the visual window 8, and the oil separation pipe is fixed on the side wall of the primary separation tank 1 or the bottom of the filter tank 2.

Further, the kitchen oil-water separator with the secondary separation provided by the embodiment of the utility model further comprises a buffer bucket, wherein the buffer bucket is used for collecting the oil-water mixture discharged from the secondary sewage outlet 10.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that: the embodiment of the utility model provides a kitchen oil-water separator with two-stage separation, which adopts various means to reduce disturbance of filtrate output by a filtrate pipe on an oil-water mixture so as to improve the oil-water separation effect. The plurality of means includes:

(1) The oil phase in the secondary separation box is basically not disturbed by the liquid flowing out of the filtrate pipe by adopting secondary separation;

(2) The oil spilling port is far away from the filtrate pipe;

(3) The second-stage oil drain port is far away from the oil overflow port;

(4) The secondary separation box can block the disturbance propagation;

(5) And a buffer tank is arranged to reduce the speed and disperse the filtrate, so that disturbance is reduced.

Drawings

FIG. 1 is a view showing a use state of a two-stage separation kitchen oil-water separator according to an embodiment of the present utility model in step 101;

FIG. 2 is a diagram showing a usage state of the two-stage separation kitchen oil-water separator according to the embodiment of the present utility model in step 104;

FIG. 3 is a view showing a use state of the two-stage separation kitchen oil-water separator according to the embodiment of the present utility model in step 105;

fig. 4 is a view showing a use state of the two-stage separation kitchen oil-water separator according to the embodiment of the utility model in step 106.

In the figure: the device comprises a first-stage separation box 1, a filter tank 2, a first-stage drain outlet 3, a heater 4, a first-stage oil drain outlet 5, a filtrate pipe 6, a water cleaning outlet 7, a visual window 8, a second-stage separation box 9, a second-stage drain outlet 10, an oil overflow port 11, a second-stage oil drain outlet 12, an overflow pipe 13, an oil separation pipe 14, a buffer tank 15, a drain pipe 16, a water level 17 and an oil level 18.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

Example 1

Referring to fig. 1 to 4, embodiment 1 provides a kitchen oil-water separator with secondary separation, comprising a primary separation tank 1, a filter tank 2, a primary drain outlet 3, a heater 4, a primary drain outlet 5, a filtrate pipe 6, a clean water outlet 7, a visual window 8, a secondary separation tank 9, a secondary drain outlet 10, an oil spill outlet 11, a secondary drain outlet 12, a drain pipe 16, an overflow structure, a buffer tank and the like. Wherein, filter tank 2 locates the top of one-level separator tank 1, and it is used for realizing solid-liquid separation, unanimous with prior art. The primary sewage outlet 3 is arranged at the bottom of the primary separation tank 1 and is used for discharging the oil-water mixture of the primary separation tank 1, and a control valve is arranged on the primary sewage outlet and is connected with a sewage pipe 16. The heater 4 is arranged at the lower part of the primary separation tank 1, is used for heating the oil-water mixture to improve the oil-water separation effect, and is specifically arranged at the front side of the primary separation tank 1. The primary oil drain port 5 is arranged at the upper part of the primary separation tank 4 and is lower than the oil overflow port 11, and is used for draining the oil phase of the primary separation tank 1, and a control valve is arranged on the primary oil drain port. The filtrate pipe 6 is provided at the bottom of the filter tank 2, vertically arranged, behind the secondary separation tank 9, down to the lower part of the primary separation tank 1. The clean water port 7 is used for adding clean water to the primary separation tank 1 initially, and is provided with a control valve which is also used for cleaning the separator. The visual window 8 is arranged in the middle of the front side of the primary separation box 1 and is used for observing the liquid level of clear water in initial use. The secondary separation box 9 is arranged at the upper part in the primary separation box 1 and is used for carrying out secondary separation on the oil phase and isolating disturbance of the primary separation box 1. The secondary sewage outlet 10 is arranged at the bottom of the secondary separation tank 9, penetrates out of the primary separation tank 1, and is provided with a control valve for discharging the oil-water mixture in the primary separation tank 1. The oil overflow port 11 is arranged at the upper part of the front side of the secondary separation tank 9 and is used for communicating the primary separation tank 1 with the secondary separation tank 9. The secondary oil drain 12 is arranged at the upper part or the middle part of the secondary separation box 9, penetrates out of the primary separation box 1 outwards, is positioned at the rear part of the secondary separation box 9 and is lower than the oil overflow 11, and a control valve is arranged on the secondary oil drain 12 and is used for draining the oil phase of the secondary separation box 9. The sewage drain pipe 16 is arranged below the primary separation box 1, and the tail end of the sewage drain pipe is connected with an underground sewage drain. The buffer tank is used for collecting the oil-water mixture discharged from the secondary sewage outlet 10. The overflow structure is located in the primary separation tank 1 and outside the secondary separation tank 9, and is used for controlling the liquid level in the primary separation tank 1 and also used for discharging the water phase in the primary separation tank 1.

Referring to fig. 1 to 4, the overflow structure includes an overflow pipe 13, an oil-separating pipe 14, and the like. Wherein, overflow pipe 13 is fixed in the bottom of first grade separation tank 1, and its vertical setting, and its lower extreme wears out first grade separation tank 1 and it is connected with blow off pipe 16 downwards, and its upper end is higher than visual window 8 and is lower than overflow port 11 (specifically slightly lower, just discharges the aqueous phase when guaranteeing that oil liquid level 18 is fast to overflow port 11, and then guarantees that the oil phase can get into second grade separation tank 9), and it is used for discharging the aqueous phase. The oil separation pipe 14 is sleeved outside the overflow pipe 13, a gap (in particular an annular gap) is formed between the oil separation pipe and the overflow pipe 13, a gap is formed between the lower end of the oil separation pipe and the bottom of the primary separation box 1, and the upper end of the oil separation pipe is higher than the oil overflow port 11 and is used for isolating oil phase from entering the overflow pipe 13; specifically, the oil-separating pipe 14 is a circular pipe coaxially arranged with the overflow pipe 13, the lower end of the oil-separating pipe is positioned below the visual window 8, and the peripheral surface of the oil-separating pipe is fixed on the side wall of the primary separation tank 1 or the top of the oil-separating pipe is fixed on the bottom of the filter tank 2. Wherein the flow rate of the overflow pipe 13 is smaller than that of the filtrate pipe 6.

When in initial use, the primary separation box 1 is filled with clean water and the liquid level reaches the visible window 8; oil-water separation; the oil phase of the primary separation tank 1 enters the secondary separation tank 9 from the overflow port 11, and the water phase overflows to the overflow pipe 13.

Specifically, the secondary separation tank 9 in the embodiment of the present utility model is fixed at the left or right side of the primary separation tank 1, and the overflow structure is located at the other side (right or left side) of the primary separation tank 1. The primary drain outlet 3, the primary drain outlet 5 and the secondary drain outlet 12 are all positioned on one side (such as left side or right side) of the primary separation tank 1 away from the overflow structure.

Preferably, referring to fig. 1 to 4, a buffer tank 15 is provided on the front side of the primary separation tank 1 and directly below the filtrate pipe 6 in the embodiment of the present utility model to slow the flow of filtrate from the filtrate pipe 6, and the lower end of the filtrate pipe 6 is located in the buffer tank 15. The buffer tank 15 is specifically a rectangular tank.

The top of the secondary separation tank 9 in the embodiment of the present utility model is open, and the bottom of the secondary separation tank is conical (the secondary drain 10 is arranged at the bottom of the cone), and the secondary separation tank is a metal tank for heat transfer.

Example 2

Example 2 provides an oil-water separation method, which adopts the two-stage separation kitchen oil-water separator disclosed in example 1, and comprises the following steps:

s101: referring to fig. 1, the clear water port 7 is opened, the viewing window 8 is observed, and when the liquid level reaches the viewing window 8, the clear water port 7 is closed.

S102: pouring kitchen wastewater into the filter tank 2, and allowing filtrate to enter the primary separation tank 1 through the filtrate pipe 6, wherein the liquid level rises.

S103: the liquid level rises to an oil overflow port 11; the oil phase of the primary separation tank 1 enters the secondary separation tank 9 from the oil overflow port 11, and the water phase overflows to the overflow pipe 13 and is discharged from the drain pipe 16.

S104: referring to fig. 2, the liquid level in the secondary separator tank 9 rises to the secondary oil drain 12, and the oil phase is continuously drained from the secondary oil drain 12.

S105: referring to fig. 3, after the kitchen wastewater stops being added; the liquid level of the first-stage separation tank 1 is lowered, the liquid level of the oil phase is lower than the overflow port 11, and the liquid level of the water phase is lower than the upper end of the overflow pipe 13. Neither the oil phase nor the water phase is discharged. The secondary sewage outlet 10 is opened to discharge the oil-water mixture (mainly the oil phase in the secondary separation tank 9) into the buffer tank, and the oil-water mixture is poured into the filter tank 2 together with the kitchen for separation again when being used next time.

S106: referring to fig. 4, the primary oil drain port 5 is opened to discharge most of the oil phase of the primary separation tank 1 and then closed.

S107: the primary sewage outlet 3 is opened to discharge the liquid (mainly water phase) remained in the primary separation tank 1 to the sewage pipe 16.

The heights of the first-stage oil drain port 5, the overflow port 11, the second-stage oil drain port 12 and the overflow pipe 13 are set according to the requirements so as to realize the process. Wherein the order of steps S105 and S106 is exchangeable. In the process of oil-water separation, the heater 4 needs to be started. After the use is finished, the water cleaning port 7 can be opened to clean the equipment, and the primary sewage outlet 3 and the secondary sewage outlet 10 (the heater 4 is required to be started) are opened after the liquid level reaches a certain height.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (7)

1. The kitchen oil-water separator for secondary separation comprises a primary separation tank (1), a filter tank (2) at the top of the primary separation tank (1), a primary sewage outlet (3) at the bottom of the primary separation tank (1), a heater (4) at the lower part of the primary separation tank (1), a primary oil drain port (5) at the upper part of the primary separation tank (1) and a filtrate pipe (6) at the bottom of the filter tank (2) and downwards to the lower part of the primary separation tank (1); the device is characterized by further comprising a clear water opening (7) above the filter tank (2), a visible window (8) in the middle of the first-stage separation tank (1), a second-stage separation tank (9) at the inner upper part of the first-stage separation tank (1), a second-stage sewage outlet (10) at the bottom of the second-stage separation tank (9) and penetrating out of the first-stage separation tank (1) outwards, an oil spilling opening (11) at the upper part of the second-stage separation tank (9), a second-stage oil draining opening (12) at the upper part or the middle part of the second-stage separation tank (9) and penetrating out of the first-stage separation tank (1) outwards, and an overflow structure which is arranged in the first-stage separation tank (1) and is positioned outside the second-stage separation tank (9), wherein the visible window (8) is arranged at the front side of the first-stage separation tank (1), the filtrate pipe (6) is positioned at the rear of the second-stage separation tank (9), the oil spilling opening (11) is arranged at the front side of the second-stage separation tank (9), and the second-stage oil draining opening (12) is positioned at the rear part of the second-stage separation tank (9) and is lower than the oil spilling opening (5); the overflow structure comprises an overflow pipe (13) arranged at the bottom of the primary separation tank (1) and an oil separation pipe (14) sleeved outside the overflow pipe (13); the lower end of the overflow pipe (13) downwards passes through the primary separation box (1), and the upper end of the overflow pipe is higher than the visible window (8) and lower than the oil overflow port (11); a gap is formed between the oil separation pipe (14) and the overflow pipe (13), a gap is formed between the lower end of the oil separation pipe and the bottom of the primary separation box (1), and the upper end of the oil separation pipe is higher than the oil overflow port (11); when in initial use, the primary separation box (1) is internally filled with clean water and the liquid level reaches the visible window (8); oil-water separation; the oil phase of the primary separation tank (1) enters the secondary separation tank (9) from the oil overflow port (11), and the water phase overflows to the overflow pipe (13).

2. The two-stage separated kitchen oil-water separator according to claim 1, wherein the two-stage separation tank (9) is fixed at the left side or the right side of the primary separation tank (1), and the overflow structure is positioned at the other side of the primary separation tank (1); the primary sewage outlet (3), the primary oil drain port (5) and the secondary oil drain port (12) are all positioned on one side of the primary separation tank (1) far away from the overflow structure, and control valves are arranged on the primary separation tank.

3. Kitchen oil-water separator with secondary separation according to claim 1, characterized in that a buffer tank (15) is arranged at the front side of the primary separation tank (1) and right below the filtrate pipe (6), and the lower end of the filtrate pipe (6) is positioned in the buffer tank (15).

4. Kitchen oil-water separator with secondary separation according to claim 1, characterized in that a drain pipe (16) is arranged below the primary separation tank (1), a control valve is arranged on the primary drain outlet (3) and is connected with the drain pipe (16), and the lower end of the overflow pipe (13) is connected with the drain pipe (16).

5. Kitchen oil-water separator with secondary separation according to claim 1, characterized in that the top of the secondary separation tank (9) is open, its bottom is conical, it is a metal tank.

6. The two-stage separated kitchen oil-water separator according to claim 1, wherein the oil separation pipe (14) is a circular pipe coaxially arranged with the overflow pipe (13), the lower end of the oil separation pipe is positioned below the visible window (8), and the oil separation pipe is fixed on the side wall of the first-stage separation tank (1) or the bottom of the filter tank (2).

7. The two-stage separated kitchen oil-water separator according to claim 1, further comprising a buffer tank for collecting the oil-water mixture discharged from the two-stage drain (10).