Oil collecting drum dewatering device of catering oil-water separator

Abstract

The utility model provides an oil collecting drum dewatering device of a catering oil-water separator, and belongs to the technical field of catering oil-water separation. The problems that the residence time of a grease layer formed by waste grease in the oil-water separator is too long, grease rancidification and hardening are caused, peculiar smell is generated, the flowability is poor, and the moisture content in discharged grease is too high are solved. The device comprises an oil collecting barrel, a water distributor and a valve, a hole is formed in the bottom of the oil collecting barrel, the water distributor is arranged in the oil collecting barrel, the bottom of the water distributor is communicated with the hole, the water distributor comprises a water distributor, a water distributor sleeve and a water distributor drainage pipe, the upper portion of the water distributor drainage pipe is connected with the water distributor sleeve in a nested mode, and the water distributor drainage pipe and the water distributor sleeve are coaxially arranged. The upper portion of the water distributor sleeve is connected with a water distributor in a nested mode, a water distributor water inlet and a water distributor water outlet are formed in the water distributor, the lower end of the water distributor sleeve and the bottom of the oil collecting barrel are arranged at intervals, and a valve is arranged on the lower portion of the side wall of the oil collecting barrel. The device is mainly used for treating wastewater generated in the catering industry.

Description

Technical Field

[0001] This utility model belongs to the field of oil-water separation technology in the catering industry, and in particular relates to a water removal device for the oil collection tank of a catering oil-water separator. Background Technology

[0002] In the field of wastewater treatment in the catering industry, oil-water separation equipment is an important environmental protection device for achieving grease recovery and wastewater purification. Currently, most mainstream oil-water separation equipment is designed based on the principle of gravity separation. Grease, due to its lower density, floats to the surface of the wastewater, forming an grease layer for discharge. However, this technology has significant limitations: First, the grease layer needs to reach a critical thickness (usually not less than 30mm) for effective separation. However, during prolonged retention of floating grease, rancidity and solidification can easily occur, leading to a sharp decrease in fluidity and hindering oil discharge. Second, the solidified grease layer not only contaminates the inner wall of the equipment, creating an odor source, but also increases the risk of pipe blockage, causing inconvenience to oil extraction operations and thus increasing the frequency of equipment maintenance.

[0003] To address the issue of existing technologies relying on the thickness of oil-water separation layers, Chinese patent application CN105727598A, entitled "A Method and Apparatus for Separating Liquids of Different Densities Based on Hydraulic Pressure Separation," discloses a pressure-driven separation scheme. This scheme achieves immediate oil discharge through dynamic separation by pressurized water flow cutting the grease layer. While this approach overcomes the time dependence of traditional processes on grease layer thickness, it is constrained by turbulent disturbances and oil film breakage within the closed cavity, resulting in a water content of 25%–40% in the collected grease. Subsequent processing requires an additional dehydration device, significantly increasing process complexity and operating costs. Furthermore, Chinese patent application CN221971326U, entitled "A Circulating Oil-Water Separation Device for Catering," discloses a circulating oil-water separation device for catering. Although it improves separation efficiency through optimized spatial design, its core remains within the scope of static gravity separation, failing to effectively resolve the contradiction between process lag and the water content of the discharged oil. Utility Model Content

[0004] In view of this, the present invention aims to propose a water removal device for the oil collection tank of a catering oil-water separator, so as to solve the problems of excessive retention time of waste oil forming an oil layer in the oil-water separator, which causes the oil to become rancid and form a slab, producing an odor, as well as poor fluidity and excessive water content in the discharged oil.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a water removal device for an oil-water separator in a catering industry, comprising an oil collection tank, a water distributor, and a valve. The oil collection tank has an opening at its bottom. The water distributor is installed inside the oil collection tank and includes a water divider, a water distributor sleeve, and a water distributor drain pipe. The water distributor sleeve is sleeved on the outside of the water distributor drain pipe. The water distributor drain pipe and the water distributor sleeve are coaxially arranged. The inner diameter of the water distributor drain pipe is smaller than that of the water distributor sleeve. The upper part of the water distributor sleeve is nested and connected to the water divider. The bottom of the water distributor drain pipe communicates with the opening. The water divider has a water inlet and a water outlet. The lower end of the water distributor sleeve is spaced apart from the bottom of the oil collection tank. A valve is installed on the lower part of the side wall of the oil collection tank.

[0006] Furthermore, the vertical cross-section of the water distributor is convex, and the bottom center of the water distributor is provided with an inwardly protruding closed structure, which is nested and connected to the top of the water distributor sleeve.

[0007] Furthermore, the bottom surface of the water distributor is provided with a number of water distributor outlets evenly distributed along the circumference, and the top of the water distributor is provided with a water distributor inlet.

[0008] Furthermore, the lower opening of the water distributor sleeve is 2-50mm away from the bottom surface of the oil collection tank.

[0009] Furthermore, several blades are evenly distributed along the circumferential direction on the inner wall of the lower port of the water distributor sleeve. The blades extend radially, and a guide channel is formed between two adjacent blades.

[0010] Furthermore, the cross-sectional area of ​​the guide channel is larger than the flow area of ​​the water distributor's drain pipe.

[0011] Furthermore, the height of the upper port of the water distributor drain pipe is lower than the height of the upper port of the water distributor sleeve.

[0012] Furthermore, the lower port of the water distributor's drain pipe passes through an eyelet and is connected to the bottom of the oil collection tank via fasteners.

[0013] Furthermore, the upper port of the water distributor is higher than the upper port of the oil collection tank.

[0014] Furthermore, the top of the water separator is connected to the oil drain pipe of the oil-water separator.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting up a water separator, this utility model can make the water-containing oil flowing into the oil collection tank evenly distributed in the oil collection tank, avoiding local accumulation of oil and greatly improving the separation efficiency of oil and water.

[0017] 2. By setting up a water distributor, this utility model enables further oil-water separation in the oil collection tank for water-containing waste oil. The separated wastewater can be smoothly discharged from the oil collection tank through the water distributor, thereby effectively reducing the water content of the waste oil in the oil collection tank and improving the purity of the oil.

[0018] 3. This invention features a coaxial design between the water distributor drain pipe and the water distributor sleeve, along with blades at the lower end of the water distributor sleeve and a reasonable annular space design between the water distributor drain pipe and the water distributor sleeve. This design ensures smoother water flow, fundamentally preventing blockages and guaranteeing stable operation of the device.

[0019] 4. This utility model enables the immediate separation and discharge of waste oil separated by the oil-water separator, reducing the adhesion of oil to the components of the oil-water separator and thus avoiding the phenomenon of rancidity and coagulation caused by prolonged oil retention, which produces odors. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of the axial side structure of the oil collection tank dewatering device of the catering oil-water separator described in this utility model;

[0022] Figure 2 This is a front structural diagram of the oil collection tank dewatering device of the catering oil-water separator described in this utility model;

[0023] Figure 3 This is a top view structural diagram of the oil collection tank dewatering device of the catering oil-water separator described in this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the oil collection tank dewatering device of the catering oil-water separator described in this utility model;

[0025] Figure 5 This is a front structural diagram of the water separator of the oil collection tank dewatering device of the catering oil-water separator described in this utility model;

[0026] Figure 6 This is a top view structural diagram of the water separator of the oil collection tank dewatering device of the catering oil-water separator described in this utility model;

[0027] Figure 7 This is a cross-sectional structural diagram of the water distributor sleeve and the water distributor drain pipe of the oil collection tank dewatering device of the catering oil-water separator described in this utility model.

[0028] Figure 8 This is a schematic diagram showing the connection between the water distributor drain pipe and the oil collection tank of the oil-water separator of the catering industry according to the present invention.

[0029] Figure 9 This is a top view structural diagram of the water distributor sleeve and water distributor drain pipe of the oil collection tank dewatering device of the catering oil-water separator described in this utility model.

[0030] In the picture:

[0031] 1. Oil collection tank; 2. Water distributor; 21. Water divider; 22. Water distributor inlet; 23. Water distributor outlet; 24. Water distributor sleeve; 25. Water distributor drain pipe; 3. Valve; 4. Fastener; 5. Hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0033] Detailed Implementation Method 1: See Figure 1-9This embodiment describes a dewatering device for an oil-water separator in a catering industry. It includes an oil collection tank 1, a water distributor 2, and a valve 3. The oil collection tank 1 has holes 5 at its bottom and serves as the main container for temporarily storing the water-containing grease produced by the oil-water separator. The water distributor 2 is located inside the oil collection tank 1, and the holes 5 ensure smooth drainage of wastewater. The water distributor 2 includes a water divider 21, a water distributor sleeve 24, and a water distributor drain pipe 25. The water distributor sleeve 24 is sleeved around the outside of the water distributor drain pipe 25. The water distributor drain pipe 25 and the water distributor sleeve 24 are coaxially arranged. The inner diameter of the water distributor drain pipe 25 is smaller than that of the water distributor sleeve 24. This coaxial design effectively ensures smooth wastewater drainage and greatly reduces the risk of clogging. The upper part of the water distributor sleeve 24 is connected to the water distributor sleeve 24. The water distributor 21 is nested together, which makes the connection between the water distributor sleeve 24 and the water distributor 21 more stable. The bottom of the water distributor drain pipe 25 is connected to the hole 5. The water distributor 21 is provided with a water distributor inlet 22 and a water distributor outlet 23. The water-containing grease in the oil-water separator enters through the water distributor inlet 22 and is evenly distributed into the oil collection tank 1 through the water distributor outlet 23. The lower end of the water distributor sleeve 24 is spaced from the bottom of the oil collection tank 1 to provide suitable space for wastewater discharge. A valve 3 is provided on the lower side wall of the oil collection tank 1. The valve 3 is mainly used to control the discharge of grease in the oil collection tank 1. When it is necessary to collect pure grease, closing the valve 3 can prevent the grease from flowing out prematurely. When the oil-water separation is completed and the grease needs to be discharged, opening the valve 3 can achieve smooth discharge of grease.

[0034] The working principle of this utility model is as follows:

[0035] The oil drain pipe of the oil-water separator is connected to the water inlet 22 of the water distributor 21. The water-containing grease first flows through the water inlet 22 of the water distributor, and then flows into the oil collection tank 1 through the water outlet 23 of the water distributor. The water-containing grease level in the oil collection tank 1 continues to rise. When the liquid level in the oil collection tank 1 reaches the upper end of the water distributor drain pipe 25, the wastewater at the bottom of the oil collection tank 1 flows out of the oil collection tank 1 through the annular channel formed by the outer wall of the water distributor drain pipe 25 and the inner wall of the water distributor sleeve 24, and through the water distributor drain pipe 25 and the hole 5. The water-containing grease in the catering oil-water separator continuously flows into the oil collection tank 1, and the grease layer in the oil collection tank 1 will become thicker and thicker. The liquid level of the grease and wastewater in the oil collection tank 1 continues to drop. When grease flows out from the hole 5 at the bottom of the oil collection tank 1, the oil collection tank 1 is full of grease. Then the valve 3 is opened, and the separated pure grease can be smoothly discharged from the oil collection tank 1.

[0036] The water distributor 21 has a convex cross-section and an inwardly protruding closed structure at the bottom center. The closed structure is nested and connected to the top of the water distributor sleeve 24, so that the water distributor 21 can be tightly nested and fixedly connected to the drainage sleeve 25, ensuring the stability and sealing of the connection between the water distributor 21 and the drainage sleeve 25.

[0037] The bottom surface of the water separator 21 is provided with a number of water separator outlets 22 evenly distributed along the circumference, and the top of the water separator 21 is provided with a water separator inlet 23. By setting a number of water separator outlets 22, it is ensured that the water-containing grease flowing into the water separator 21 is evenly dispersed into the oil collection tank 1, which provides a strong guarantee for improving the separation efficiency of grease and wastewater.

[0038] The lower opening of the water distributor sleeve 24 is 2-50mm away from the bottom surface of the oil collection tank 1, thus ensuring the reasonable position of the water distributor sleeve 24 in the oil collection tank 1 and providing reasonable space for the discharge of wastewater.

[0039] Several blades 6 are evenly distributed along the circumference of the inner wall of the lower port of the water distributor sleeve 24. The blades 6 extend radially to the outer wall of the water distributor drain pipe 25. A guide channel is formed between two adjacent blades 6. The blades 6 not only help to enhance the stability of the connection between the water distributor sleeve 24 and the water distributor drain pipe 25, but also play a certain guiding role in the process of wastewater discharge.

[0040] The cross-sectional area of ​​the guide channel is larger than the flow area of ​​the water distributor drain pipe 25, thereby improving the efficiency of wastewater discharge and reducing disturbance to the grease layer.

[0041] The height of the upper end of the water distributor drain pipe 25 is lower than the height of the upper end of the water distributor sleeve 24, thereby ensuring that the water-containing grease stays in the oil collection tank 1 for a sufficient period of time and oil-water separation, and effectively preventing the grease from being carried out of the oil collection tank 1 through the water distributor drain pipe 25.

[0042] The lower end of the water distributor drain pipe 25 passes through the hole 5 and is connected to the bottom of the oil collection tank 1 through the fastener 4. This can effectively prevent the water distributor drain pipe 25 from loosening or shifting due to water flow impact or vibration during operation, thereby improving the overall stability of the equipment.

[0043] The upper port of the water separator 21 is higher than the upper port of the oil collection tank 1. The water separator 21 passes through the pre-drilled round hole on the cover of the oil collection tank 1 and is higher than the cover of the oil collection tank 1, and the water inlet 211 of the water separator is connected to the oil drain pipe of the oil-water separator.

[0044] The top of the water separator 21 is connected to the oil drain pipe of the oil-water separator, ensuring that the water-containing grease separated by the oil-water separator quickly enters the oil collection tank, avoiding grease retention or backflow in the pipeline, and improving the efficiency of grease collection.

[0045] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A water removal device for an oil-water separator in a catering industry, characterized in that: It includes an oil collection tank (1), a water distributor (2), and a valve (3). The oil collection tank (1) has holes (5) at its bottom. The water distributor (2) is located inside the oil collection tank (1). The water distributor (2) includes a water divider (21), a water distributor sleeve (24), and a water distributor drain pipe (25). The water distributor sleeve (24) is sleeved on the outside of the water distributor drain pipe (25). The water distributor drain pipe (25) and the water distributor sleeve (24) are coaxially arranged. The inner diameter of the water distributor drain pipe (25) is smaller than that of the water distributor sleeve (24). The upper part of the water distributor sleeve (24) is nested with the water distributor (21). The bottom of the water distributor drain pipe (25) is connected to the hole (5). The water distributor (21) is provided with a water distributor inlet (22) and a water distributor outlet (23). The lower end of the water distributor sleeve (24) is spaced from the bottom of the oil collection tank (1). A valve (3) is provided on the lower part of the side wall of the oil collection tank (1).

2. The oil collection tank dewatering device of a catering oil-water separator according to claim 1, characterized in that: The water distributor (21) has a convex cross-section and an inwardly protruding closed structure at the bottom center. The closed structure is nested and connected to the top of the water distributor sleeve (24).

3. The oil collection tank dewatering device of a catering oil-water separator according to claim 2, characterized in that: The bottom surface of the water distributor (21) is provided with a number of water distributor outlets (23) evenly distributed along the circumferential direction, and the top of the water distributor (21) is provided with a water distributor inlet (22).

4. The oil collection tank dewatering device of a catering oil-water separator according to claim 1, characterized in that: The lower opening of the water distributor sleeve (24) is 2-50mm away from the bottom surface of the oil collection tank (1).

5. The oil collection tank dewatering device for a catering oil-water separator according to claim 4, characterized in that: Several blades (6) are evenly distributed along the circumferential direction on the inner wall of the lower port of the water distributor sleeve (24). The blades (6) extend radially to the outer wall of the water distributor drain pipe (25), and a guide channel is formed between two adjacent blades (6).

6. The oil collection tank dewatering device for a catering oil-water separator according to claim 5, characterized in that: The cross-sectional area of ​​the guide channel is larger than the flow area of ​​the water distributor drain pipe (25).

7. The oil collection tank dewatering device of a catering oil-water separator according to claim 1, characterized in that: The height of the upper end of the drain pipe (25) of the water distributor is lower than the height of the upper end of the sleeve (24) of the water distributor.

8. The oil collection tank dewatering device of a catering oil-water separator according to claim 1, characterized in that: The lower end of the drain pipe (25) of the water distributor passes through the hole (5) and is connected to the bottom of the oil collection tank (1) by fastener (4).

9. The oil collection tank dewatering device for a catering oil-water separator according to claim 1, characterized in that: The upper port of the water distributor (21) is higher than the upper port of the oil collection tank (1).

10. The oil collection tank dewatering device of a catering oil-water separator according to claim 1, characterized in that: The top of the water separator (21) is connected to the oil drain pipe of the oil-water separator.

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