CN201842675U - kitchen grease trap - Google Patents

Abstract

The utility model discloses an oil separation tank for kitchen, which comprises a closed rectangular box body with a movable cover plate on the upper end surface, wherein one side of the box body is provided with a water inlet, the other side is provided with a water outlet, and the water inlet is provided with a sieve bend, so that suspended matters in restaurant wastewater can be intercepted, and the water content of the intercepted matters can be reduced; the oil separation tank adopts two-stage treatment, the first stage mainly removes floatable oil and gravel with larger grain size, and the second stage treatment area is treated by coarse graining materials, so that the grain size of oil droplets is increased, dispersed oil with smaller grain size and a small amount of remaining floatable oil can be removed, and the total removal efficiency is improved; the coarse grained materials are contained in the oil separation tank by a basket, so that the extraction and the replacement are convenient, the anthracite is convenient to obtain, and the burning treatment is carried out after the coarse grained materials are replaced regularly; the oil drainage mode adopts a U-shaped oil drainage pipe, the floating oil layer is automatically led out of the pool, the two pools are common, and the oil enters an oil receiver; the device is integrated, simple in structure, low in cost, convenient to install, easy to maintain and suitable for pretreatment of restaurant wastewater in small towns.

Description

kitchen grease trap

technical field

The utility model relates to a device for pretreating waste water with high oil content discharged from restaurants and family kitchens, belonging to the field of environmental protection equipment.

Background technique

In recent years, with the improvement of people's living standards, the catering industry in small towns has developed rapidly. During the operation of the catering industry or the cooking process of residents, a large amount of wastewater containing suspended solids, animal and vegetable oils, oxygen-consuming organic matter and detergents will be produced. According to statistics, my country discharges nearly 100 million tons of untreated catering wastewater every year, and there is a growing trend. At present, the catering wastewater in small towns has a high concentration of animal and vegetable oils, most of which are directly discharged into rivers through sewers, which will not only block the drainage pipes, but also cause great pollution to the soil, water and other environments. Therefore, catering wastewater must be treated. deal with. the

Although there are many oil-water separation devices at present, most of them have different degrees of unsatisfactory separation effect of oil, water and slag, and difficult slag discharge; the discharged waste slag and suspended solids have high water content, which is easy to cause secondary pollution; equipment cleaning and maintenance Disadvantages such as inconvenience, complicated structure, high cost.

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a kitchen grease trap with good separation effect of oil, water and slag, convenient cleaning and maintenance, simple structure and low cost.

The utility model comprises a closed rectangular box body with a movable cover plate on the upper end surface. The baffle plate and the middle oil baffle are separated into a primary treatment area and a secondary treatment area. There is a replaceable coarse-grained material storage basket at the bottom of the secondary treatment area; the upper part of the left oil baffle and the middle oil baffle It is integrated with the U-shaped oil guide pipe, and one end of the U-shaped oil guide pipe is connected to the oil discharge port; a steady flow baffle slightly higher than the water inlet is set at the water inlet, and the water overflows after passing through the steady flow baffle On the curved sieve, the suspended solids are filtered by the curved sieve and enter the primary treatment area through the channel between the front baffle and the bottom of the box body. In the primary treatment area, the oil beads float up and the mud and sand descend. The mud baffles are separated from the water respectively; the filtered waste water flows into the secondary treatment area through the channel between the left oil baffle, the mud baffle and the middle oil baffle through the water distribution plate after primary treatment. After the coarse-grained material is treated, the particle size becomes larger and floats up. After the oil slick in the primary and secondary treatment areas reaches a certain thickness, it is exported to the oil trap through the middle U-shaped oil guide pipe and the oil discharge port. The treated wastewater passes through the water retaining block. The channel between the plate and the right oil trap is drained through the drain.

The bottom of the water inlet side of the box is also provided with a row of sand ports through which mud and sand can be discharged regularly.

The position of the drain port is not higher than the water inlet and the oil discharge port.

The utility model has the advantages that: the curved sieve is used at the water inlet, which can intercept dregs such as vegetable leaves, residue suspended matter, suspended matter with smaller particle diameters, etc. in the catering wastewater, and can reduce the water content of the retained matter; The grease trap adopts two-stage treatment, the first stage mainly removes the slick oil and gravel with large particle size, and the secondary treatment area is treated with coarse-grained materials (anthracite) after coarse-grained treatment, the particle size of the oil beads becomes larger and can be removed Dispersed oil with smaller particle size and the remaining small amount of slick oil improve the total removal efficiency; coarse-grained materials are stored in baskets and placed in a grease trap, which is convenient for extraction and replacement; anthracite is convenient for raw materials, which can be burned after regular replacement; The oil method adopts U-shaped oil discharge pipe, and the floating oil layer is automatically exported out of the pool. The two pools are shared, and the oil enters the oil collector; the equipment is integrated, the structure is simple, the cost is low, the installation is convenient, and it is easy to maintain. It is suitable for the treatment of catering wastewater in small towns. preprocessing. the

Description of drawings

Fig. 1 is a structural representation of the utility model.

1. Box body, 2. Water inlet, 3. Steady flow baffle, 4. Curved screen, 5. Front baffle, 6. Primary treatment area, 7. Left oil separation baffle, 8. U-shaped oil guide pipe , 9. Mud baffle, 10. Middle oil baffle, 11. Water distribution plate, 12. Secondary treatment area, 13. Coarse-grained material storage basket, 14. Water baffle, 15. Right oil baffle Baffle plate, 16. drain port, 17. oil discharge port, 18. sand discharge port, 19. coarse-grained material.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Referring to Fig. 1, the waste water produced in the catering industry is introduced into the tank 1 through the water inlet 2. The waste water is buffered by the steady flow baffle 3, reduces the flow velocity, and overflows to the curved screen 4, and the large waste water is retained by the curved screen. Suspended solids and floating solids accumulate on the screen and are regularly removed manually. After removing the large suspended solids, the waste water flows into the primary treatment area 6 from the channel between it and the bottom of the box after being blocked by the front baffle 5, where the oil beads float up and the mud and sand descend. Oil is temporarily blocked in the first-level treatment area by the left oil-separating baffle plate 7, and mud sand is isolated in the first-level treatment area by the mud-separating baffle plate 9. The waste water enters the secondary treatment area 12 through the channel between the baffles 7, 9, and 10 through the water distribution plate 11. In the secondary treatment area, after the wastewater is coarse-grained by the coarse-grained material 19 in the coarse-grained material storage basket 13, the diameter of the oil beads becomes larger and floats between the baffles 10 and 15. Flow away between the plate 14 and the right oil-separating baffle 15, and discharge the casing through the drain port 16. The oil levels in the two treatment areas in the box rise simultaneously. When they rise to the upper edge of the U-shaped oil guide pipe 8, the floating oil on both sides enters the oil guide pipe respectively. It flows out of the tank and enters the oil collector outside the tank. The silt produced in the operation process of the grease trap is separated in the primary treatment area by the silt baffle plate 9, and is regularly removed with water, and the waste water after the removal is discharged through the sand discharge port 18.

Claims (3)

1. A kitchen grease trap, comprising a closed rectangular box (1) with a movable cover on the upper end, characterized in that a water inlet (2) is provided on one side of the box (1), and a water inlet (2) is provided on the other side There is a water outlet (15), and the box is divided into a primary treatment area (6) and a secondary treatment area ( 12), there is a replaceable coarse-grained material storage basket (13) at the bottom of the secondary treatment area; the upper part of the left oil separation baffle (7) and the middle oil separation baffle (10) is connected with the U-shaped oil guide pipe (8 ) connected as a whole, one end of the U-shaped oil guide pipe (8) communicates with the oil discharge port (17); the water inlet (2) is provided with a steady flow baffle (3) slightly higher than the water inlet, and the water passes through the steady flow After the flow is stabilized by the flow baffle, it overflows onto the curved sieve (4), and after passing through the curved sieve to filter the suspended matter, it enters the primary treatment area (6) through the channel between the front baffle (5) and the bottom of the box body. In the primary treatment area, the oil beads float up, and the mud and sand descend, and are separated from the water through the left oil baffle (7) and the mud baffle (9); the filtered waste water passes through the left oil baffle (7) after primary treatment. ), the channel between the mud baffle (9) and the middle oil baffle (10) flows into the secondary treatment area (12) through the water distribution plate (11), and after the coarse-grained material is treated, the particle size becomes larger Floating, the oil slick in the primary and secondary treatment areas reaches a certain thickness and then is exported through the middle U-shaped oil guide pipe (8) through the oil discharge port (17), and the treated waste water passes through the water retaining baffle (14) and the right oil separator The channel between the baffles (15) is drained through the drain (16). 2. The kitchen grease trap according to claim 1, characterized in that a row of sand ports (18) is further provided at the bottom of the tank on the side of the water inlet. 3. The kitchen grease trap according to claim 1, characterized in that the position of the drain port (16) is not higher than the water inlet (2) and the oil drain port (17).

Images