Oil collecting barrel with double-layer sleeve

Abstract

The utility model provides an oil collecting barrel with a double-layer sleeve, and belongs to the technical field of catering oil-water separation. The problem that the water content of grease in the grease collecting barrel is too high is solved. The barrel comprises a barrel body, a water segregator and a sleeve, a barrel bottom hole is formed in a bottom plate of the barrel body, the sleeve is arranged in the barrel body and comprises an outer layer pipe and an inner layer pipe, the outer layer pipe is connected to the outer side of the inner layer pipe in a sleeving mode, the top of the outer layer pipe is connected with the water segregator, the bottom of the inner layer pipe penetrates through the barrel bottom hole, and the inner layer pipe is connected with the water segregator. A sleeve limiting ring is arranged at the bottom of the inner-layer pipe, the inner-layer pipe is connected with a bottom plate of the can body in a clamped mode through the sleeve limiting ring, an upper end opening of the outer-layer pipe is located above an upper end opening of the inner-layer pipe, a lower end opening of the outer-layer pipe is located above a lower end opening of the inner-layer pipe, and an emptying opening is formed in the lower end opening of the inner-layer pipe in the horizontal direction. The water segregator, the sleeve and the barrel bottom hole are all located on the axis of the center shaft of the barrel body. The device is mainly used for separating water from grease.

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 an oil collection tank with a drain switch. Background Technology

[0002] The catering industry generates a large amount of wastewater during its daily operations. Direct discharge of this wastewater can cause pipe blockages and environmental pollution. Currently, the industry commonly uses oil-water separators for pretreatment of catering wastewater. These separators achieve initial separation of oil and water through gravity stratification. Existing finished equipment is usually equipped with a floating oil collection and discharge device, which can automatically discharge the separated surface oil into an oil collection tank for temporary storage, so that it can be handed over to professional organizations for recycling and treatment later.

[0003] However, in practical applications, it has been found that existing oil-water separators often contain unseparated wastewater in the discharge of grease into the oil collection tank due to limitations in the structure of the discharge pipeline and the separation process. This oil-water mixture leads to an excessively high water content in the grease in the collection tank, which affects the measurement of the actual grease content by the recycling personnel. Subsequent processing requires an additional dehydration process, increasing operating costs. Although some equipment attempts to improve the separation effect by extending the settling time, prolonged oil and water retention can cause the grease to rot and harden, resulting in an unpleasant odor. Utility Model Content

[0004] In view of this, the present invention aims to provide an oil collection tank with a double-layer sleeve to solve the problem of excessive water content in the oil discharged from the oil-water separator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oil collecting tank with a double-layered sleeve, comprising a tank body, a water distributor, and a sleeve. A bottom hole is provided on the bottom plate of the tank body. The sleeve is disposed inside the tank body and comprises an outer tube and an inner tube. The outer tube is sleeved on the outside of the inner tube. The top of the outer tube is connected to the water distributor. The bottom of the inner tube penetrates through the bottom hole. A sleeve limiting ring is provided at the bottom of the inner tube. The inner tube is engaged with the bottom plate of the tank body through the sleeve limiting ring. The length of the outer tube is greater than the length of the inner tube. The upper port of the outer tube is located above the upper port of the inner tube, and the lower port of the outer tube is located above the lower port of the inner tube. A purging port is provided at the lower port of the inner tube in a horizontal direction. The water distributor, the sleeve, and the bottom hole are all located on the axis of the central axis of the tank body.

[0006] Furthermore, a lid is provided on the top of the barrel, and a circular through hole is provided on the lid, through which the water distributor passes.

[0007] Furthermore, the water distributor has a convex frustum structure, the bottom diameter of the water distributor is smaller than the diameter of the circular through hole, the center of the bottom of the water distributor protrudes inward and is nested and connected to the top of the outer tube; the upper end surface of the lower annular area of ​​the water distributor is higher than the bucket lid.

[0008] Furthermore, the water distributor has a water inlet at the top and several water outlets evenly distributed around the bottom in a circumferential direction. The bottom of the water distributor is also provided with a limiting ring, the diameter of which is larger than the diameter of the circular through hole.

[0009] Furthermore, the water inlet of the water distributor is connected to the oil drain pipe.

[0010] Furthermore, the sleeve limiting ring is 2-50mm higher than the lower end of the inner tube.

[0011] Furthermore, a sealing ring is provided between the sleeve limiting ring and the bottom plate of the barrel, and the diameter of the sealing ring is larger than the diameter of the sleeve limiting ring.

[0012] Furthermore, the outer tube is connected to the inner tube via blades, and there are several blades evenly distributed along the circumference of the inner tube.

[0013] Furthermore, the depth of the vent is less than the length from the lower end face of the sleeve limiting ring to the lower port of the inner tube.

[0014] Furthermore, the cross-sectional area of ​​the flow between the outer tube and the inner tube is greater than the flow area of ​​the inner tube.

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

[0016] 1. The oil collecting tank of this utility model is equipped with a double-layer cylindrical sleeve, which includes an outer tube and an inner tube. The outer tube is sleeved on the outside of the inner tube. The difference in length between the outer tube and the inner tube and the flow channel between the outer tube and the inner tube are used to achieve secondary oil-water separation of the oil-water mixture that has been initially separated by the oil-water separator. The oil-water mixture enters the oil collecting tank and separates into layers due to gravity. An grease layer is formed at the top of the liquid surface. When the liquid level in the oil collecting tank reaches the height of the upper end of the inner tube, the wastewater inside rises through the channel between the outer tube and the inner tube to the upper end of the inner tube, and is discharged downward through the inside of the inner tube. It is discharged out of the oil collecting tank through the lower end of the inner tube, realizing continuous drainage. The grease layer is retained in the oil collecting tank, thereby effectively reducing the water content of the grease and facilitating subsequent recycling and treatment.

[0017] 2. This utility model reduces the water content in the oil by adjusting the length difference of the sleeve and the spatial structure of the sleeve, and by setting a venting port at the bottom of the inner tube, so that the wastewater remaining at the lower end of the outer tube of the bottom sleeve in the barrel can be discharged through the venting port.

[0018] 3. The water separator of this utility model adopts a convex truncated cone structure. The water outlet of the water separator is evenly distributed along the circumference at the bottom of the convex truncated cone, so that the wastewater flows into the oil collection tank in a low-speed dispersed state, reducing the disturbance of the grease layer by the wastewater. The diameter of the limiting ring at the bottom of the water separator is larger than the hole of the tank cover. When the sleeve is raised to discharge oil, the limiting ring and the tank cover are locked together to form a fixed height, so that an oil discharge channel is formed between the bottom of the sleeve and the bottom hole of the tank. This ensures that only the pure grease after separation can be discharged through this channel. The linkage design of the water separator and the sleeve realizes the immediate separation and discharge of water-containing grease, solving the problem of grease remaining in the oil-water separator for a long time, decaying and hardening, thus producing odor. Attached Figure Description

[0019] 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:

[0020] Figure 1 This is a cross-sectional structural diagram of an oil collecting tank with a double-layered sleeve according to the present invention.

[0021] Figure 2 This is a top view schematic diagram of an oil collecting tank with a double-layered sleeve according to the present invention.

[0022] Figure 3 This is a schematic diagram of the axial structure of the sleeve of an oil collecting tank with a double-layer sleeve according to the present invention.

[0023] Figure 4 This is a cross-sectional structural diagram of the sleeve of an oil collecting tank with a double-layer sleeve according to the present invention.

[0024] Figure 5 This is a top view schematic diagram of the casing structure of an oil collecting tank with a double-layer casing according to the present invention.

[0025] Figure 6 This is a cross-sectional structural diagram of a water separator with a double-layered sleeve oil collecting tank according to the present invention.

[0026] Figure 7 This is a top view schematic diagram of a water distributor with a double-layered sleeve oil collecting tank according to the present invention.

[0027] Figure 8 This is a partial structural diagram of an oil collecting tank with a double-layered sleeve according to the present invention.

[0028] In the picture:

[0029] 1. Barrel body; 11. Barrel bottom hole; 2. Diverter; 21. Diverter inlet; 22. Diverter outlet; 23. Limiting ring; 3. Barrel lid; 31. Circular through hole; 4. Sleeve; 41. Outer tube; 42. Inner tube; 43. Blade; 44. Emptying port; 45. Sleeve limiting ring; 46. Sealing ring. Detailed Implementation

[0030] The technical solutions of the present invention 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 invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0031] Detailed Implementation Method 1: See Figure 1-8 This embodiment describes an oil collecting tank with a double-layered sleeve, comprising a tank body 1, a water separator 2, and a sleeve 4. The water separator 2 guides the oil-water mixture discharged from the oil-water separator into the tank body 1. A bottom hole 11 is provided on the bottom plate of the tank body 1. The sleeve 4 is disposed inside the tank body 1 and includes an outer tube 41 and an inner tube 42. The outer tube 41 is sleeved on the outside of the inner tube 42, forming an annular space between the outer tube 41 and the inner tube 42 to provide space for wastewater discharge. The top of the outer tube 41 is connected to the water separator 2, and the bottom of the inner tube 42 penetrates the bottom hole 11 to serve as a wastewater discharge point. The inner tube 42 has a sleeve limiting ring 45 at its bottom, and the inner tube 42 is connected to the bottom plate of the barrel 1 through the sleeve limiting ring 45. The length of the outer tube 41 is greater than the length of the inner tube 42. The upper port of the outer tube 41 is located above the upper port of the inner tube 42, and the lower port of the outer tube 41 is located above the lower port of the inner tube 42. The lower port of the inner tube 42 has a purging port 44 in the horizontal direction, which is used to drain the residual water at the lower port of the outer tube 41. The water distributor 2, the sleeve 4, and the bottom hole 11 are all located on the axis of the central axis of the barrel 1.

[0032] The working principle of this utility model:

[0033] The oil-water mixture discharged from the oil-water separator first passes through the water separator 2 and then flows into the tank 1. The flow rate of the oil-water mixture is reduced by the water separator 2, thereby reducing disturbance to the grease layer in the tank 1. As the oil-water mixture continues to flow into the tank 1, oil-water separation occurs within the tank 1. Due to gravity, the oil-water mixture separates into layers, with the grease floating on top of the wastewater. When the liquid level in the tank 1 reaches the upper port of the inner tube 42, the wastewater in the tank 1 rises through the channel between the outer tube 41 and the inner tube 42 to the upper port of the inner tube 42, and then flows downward through the interior of the inner tube 42, exiting through the lower port of the inner tube 42. As the oil-water mixture continues to flow into the tank 1, the grease layer in the tank 1 accumulates and thickens, causing the grease and wastewater levels in the tank 1 to continuously decrease. When grease is discharged from the tank 1, it indicates that the level in the tank 1 is higher than the lower port of the outer tube 41. The oil-water separator contains grease, but wastewater still accumulates below the lower end of the outer tube 41. When the oil-water separator stops draining, the grease level is level with or below the upper end of the inner tube 42. Then, the separator 2 and the sleeve 4 are lifted together, separating the bottom of the sleeve 4 from the bottom plate of the tank 1, ensuring that the emptying port 44 is higher than the bottom plate of the tank 1. The accumulated wastewater is then discharged through the emptying port 44. The separator 2 and the sleeve 4 are then lowered back into place. At this point, the tank 1 contains grease, and the grease level is lower than the upper end of the inner tube 42, so the grease will not flow out of the inner tube 42. If the grease needs to be discharged, the separator 2 and the sleeve 4 are lifted together, forming an oil discharge channel between the bottom of the sleeve 4 and the bottom hole 11 of the tank. The separated pure grease can then be smoothly discharged from the tank 1, achieving the purpose of reducing the water content of the grease.

[0034] The top of the barrel body 1 is provided with a barrel cover 3, and the barrel cover 3 is provided with a circular through hole 31. The water separator 2 passes through the circular through hole 31. The barrel cover 3 is used to seal the top of the barrel body 1 to prevent external impurities from entering the oil-water separation zone, avoid secondary pollution, and prevent operators from coming into contact with the oil-water mixture.

[0035] The water distributor 2 has a convex frustum structure. The bottom diameter of the water distributor 2 is smaller than the diameter of the circular through hole 31. The center of the bottom of the water distributor 2 protrudes inward and is nested and connected to the top of the outer tube 41. The protrusion is sealed to the top of the outer tube 41, thereby preventing the oil-water mixture from directly entering the outer tube 41. By protruding inward at the center of the water distributor 2 and being nested and fixedly connected to the top of the outer tube 41, the water distributor 2 and the sleeve 4 are displaced as a whole when the water distributor 2 is lifted. The upper end of the lower annular area of ​​the water distributor 2 is higher than the barrel cover 3, thereby ensuring that when the oil-water mixture enters the water distributor 2, it flows into the barrel 1 through the lower annular area of ​​the water distributor 2.

[0036] The water separator 2 is provided with a water inlet 21 at the top, which guides the oil-water mixture into the barrel 1. Several water outlets 22 are evenly distributed around the bottom in the circumferential direction, which disperse the oil-water mixture evenly into the barrel 1 through the water separator 2. The evenly distributed water outlets 22 reduce disturbance to the grease layer in the barrel 1, thereby avoiding the impact on the oil-water separation efficiency. The bottom of the water separator 2 is also provided with a limiting ring 23. The diameter of the limiting ring 23 is larger than the diameter of the circular through hole 31. When the water separator 2 and the sleeve 4 are lifted, the upper end face of the limiting ring 23 contacts the barrel cover 3, ensuring that a stable oil discharge channel is formed between the bottom of the sleeve 4 and the bottom hole 11 of the barrel, avoiding excessive lifting that could cause the sleeve to detach or the gap to be too large, resulting in grease leakage.

[0037] The water inlet 21 of the water separator is connected to the oil drain pipe. The oil-water mixture generated by the oil-water separator flows into the water separator 2 through the oil drain pipe and the water inlet 21 of the water separator, and then flows into the tank 1 through the water outlet 22 of the water separator.

[0038] The sleeve limiting ring 45 is 2-50mm higher than the lower end of the inner tube 42. The tube wall between the sleeve limiting ring 45 and the lower end of the inner tube 42 has a wedge-shaped structure with a thicker upper part and a thinner lower part. By controlling the height of the sleeve limiting ring 25, the gap of the oil discharge channel is controlled. Combined with the sealing and guiding functions of the wedge-shaped structure, the technical effects of reducing the water content of the grease and preventing blockage and leakage are achieved.

[0039] A sealing ring 46 is provided between the sleeve limiting ring 45 and the bottom plate of the barrel 1. The diameter of the sealing ring 46 is larger than the diameter of the sleeve limiting ring 45. The sealing ring 46 is provided to prevent the leakage of oil-water mixture. The sealing ring 46 is made of oil-resistant silicone material.

[0040] The outer tube 41 is connected to the inner tube 42 via blades 43. There are several blades 43, which are evenly distributed along the circumference of the inner tube 42. The blades evenly distributed along the circumference ensure the fixed connection between the outer tube 41 and the inner tube 42.

[0041] The depth of the vent 44 is less than the length from the lower end face of the sleeve limiting ring 45 to the lower port of the inner tube 42, so that the vent 44 is completely blocked by the bottom plate of the barrel 1 when the sleeve 4 is not lifted, thus achieving a seal. When the sleeve 4 is lifted, the water accumulated at the lower part of the lower port of the outer tube 41 is discharged through the vent 44.

[0042] The cross-sectional area of ​​the flow between the outer tube 41 and the inner tube 42 is larger than the flow area of ​​the inner tube 42, thereby reducing the upward velocity of wastewater, prolonging the residence time of wastewater in the tank 1, and promoting the gravity stratification of oil and water.

[0043] In practical applications, the working process of this utility model is as follows:

[0044] The oil drain pipe of the oil-water separator is connected to the water inlet 21 of the water separator 2. The oil-water mixture is evenly dispersed into the tank 1 through the water outlet 22 of the water separator 2. Due to gravity, the oil-water mixture separates into layers, with the grease rising to the top and the wastewater sinking to the bottom. When the liquid level in the tank 1 reaches the height of the upper port of the inner tube 42, the wastewater rises through the channel between the outer tube 41 and the inner tube 42, flows through the inner tube 42 to the lower port of the inner tube 42, and is discharged. As the oil-water separator continuously injects the oil-water mixture into the tank 1, the interface between the grease and wastewater in the tank 1 continuously decreases. When grease is discharged, it indicates that the portion of the tank 1 above the lower port of the outer tube 42 is all grease, but the portion below the lower port of the outer tube 42 contains a small amount of wastewater. At this point, the oil-water separator stops discharging oil. At this time, the grease level is level with or lower than the upper port of the inner tube 42. At the upper end of the inner tube 42, the water separator 2 and the sleeve 4 are lifted together, the sealing ring 46 is separated from the bottom plate of the tank 1, and the venting port 44 at the bottom of the inner tube 42 is higher than the bottom plate of the tank 1. A small amount of wastewater is discharged through the venting port 44. Then the water separator 2 and the sleeve 4 are lowered back into place. At this time, the liquid level in the tank 1 is lower than the upper end of the inner tube 42, so no grease will flow out from the sleeve 4. The tank 1 is full of grease. If it is necessary to discharge the grease, the water separator 2 and the sleeve 4 are lifted together. When the upper end face of the limiting ring 23 on the water separator 2 coincides with the tank cover 3, an oil discharge channel is formed between the bottom of the inner tube 42 and the bottom hole 11 of the tank. The separated grease can be smoothly discharged from the tank 1, thereby achieving the effect of reducing the water content of the grease and ensuring that the oil and water discharged from the oil-water separator are separated and discharged immediately, avoiding the grease from staying and caking for a long time and producing an odor.

[0045] In application, this invention can also be used to connect the lower end of the sleeve 4 to the drain drain using a silicone connecting pipe, thereby allowing wastewater to be directly discharged into the sewer channel.

[0046] 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. An oil collection bucket with a double walled sleeve, characterized by: It includes a barrel body (1), a water distributor (2), and a sleeve (4). The bottom plate of the barrel body (1) is provided with a bottom hole (11). The sleeve (4) is located inside the barrel body (1). The sleeve (4) includes an outer tube (41) and an inner tube (42). The outer tube (41) is sleeved on the outside of the inner tube (42). The top of the outer tube (41) is connected to the water distributor (2). The bottom of the inner tube (42) passes through the bottom hole (11). A sleeve limiting ring (45) is provided at the bottom of the inner tube (42). (42) The outer tube (41) is connected to the bottom plate of the barrel (1) by the sleeve limiting ring (45). The length of the outer tube (41) is greater than the length of the inner tube (42). The upper port of the outer tube (41) is located above the upper port of the inner tube (42). The lower port of the outer tube (41) is located above the lower port of the inner tube (42). The lower port of the inner tube (42) is provided with a purging port (44) in the horizontal direction. The water distributor (2), the sleeve (4) and the bottom hole (11) are all located on the axis of the central axis of the barrel (1).

2. The oil collecting bucket with double-layered sleeve according to claim 1, characterized in that: The top of the barrel body (1) is provided with a barrel cover (3), and a circular through hole (31) is provided on the barrel cover (3). The water distributor (2) passes through the circular through hole (31).

3. A tank with double sleeve according to claim 2, characterized in that: The water distributor (2) has a convex frustum structure. The bottom diameter of the water distributor (2) is smaller than the diameter of the circular through hole (31). The center of the bottom of the water distributor (2) protrudes inward and is nested and connected to the top of the outer tube (41). The upper end of the lower annular area of ​​the water distributor (2) is higher than the bucket lid (3).

4. A tank with double sleeve according to claim 3, characterized in that: The water distributor (2) has a water inlet (21) at the top and several water outlets (22) evenly distributed along the circumference at the bottom. The bottom of the water distributor (2) is also provided with a limiting ring (23), the diameter of which is larger than the diameter of the circular through hole (31).

5. A tank with double sleeve according to claim 4, characterized in that: The water inlet (21) of the water distributor is connected to the oil drain pipe.

6. The double-walled sleeve-equipped oil collecting bucket according to claim 1, characterized in that: The sleeve limiting ring (45) is 2-50 mm higher than the lower end of the inner tube (42).

7. The double-walled sleeve-equipped oil collecting bucket according to claim 1, characterized in that: A sealing ring (46) is provided between the sleeve limiting ring (45) and the bottom plate of the barrel (1), and the diameter of the sealing ring (46) is larger than the diameter of the sleeve limiting ring (45).

8. The double-walled sleeve-equipped oil collection bucket of claim 1, wherein: The outer tube (41) is connected to the inner tube (42) through blades (43). There are several blades (43), and the several blades (43) are evenly distributed along the circumference of the inner tube (42).

9. The double-walled sleeve-equipped oil collection bucket of claim 1, wherein: The depth of the clearing port (44) is less than the length from the lower end face of the sleeve limiting ring (45) to the lower port of the inner tube (42).

10. The double-walled sleeve-equipped oil collection bucket of claim 1, wherein: The cross-sectional area of ​​the flow between the outer tube (41) and the inner tube (42) is greater than the flow area of ​​the inner tube (42).

Images