An oil-water separator

Abstract

The utility model provides a kind of oil-water separator, including filter residue device, sedimentation tank, heating stirring device, oil discharge device, drainage device, water tank and sludge discharge device;Filter residue device is connected with sedimentation tank, for after filtering oil residue, sewage is discharged into sedimentation tank and is deposited treatment;Heating stirring device and oil discharge device are connected with sedimentation tank, and heating stirring device is used to heat and stir the oil in sedimentation tank, and oil discharge device is used to discharge the oil in sedimentation tank;Drainage device is connected with sedimentation tank and water tank, for after inputting the remaining sewage in sedimentation tank into water tank, discharge;Sludge discharge device is connected with water tank, for discharging the sludge in water tank;The application is conducive to heating grease, and cost is lower, and production is convenient.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to an oil-water separator. Background Technology

[0002] Oil-water separators for catering are primarily used to prevent grease and solid waste from entering the drainage system, making them a crucial device in domestic wastewater treatment. A common problem in low-temperature environments is grease solidification and blockage in oil-water separators. This is because catering oil contains a large amount of animal and vegetable oils, which solidify into grease lumps at low temperatures. This solidified grease adheres to the impeller of the agitator motor, causing a surge in impeller torque, accelerating mechanical fatigue, and hindering oil pump suction. Current technology involves heating the oil to melt it into a liquid before processing. This necessitates installing heating pipes on the inner wall of the separator or pipes, or equipping the system with a separate heating device such as a steam boiler, resulting in high costs and production inconvenience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an oil-water separator that is convenient for heating grease, has low cost, and is easy to produce.

[0004] This utility model provides an oil-water separator, including a filter residue device, a sedimentation tank, a heating and stirring device, an oil discharge device, a drainage device, a water tank, and a sludge discharge device. The filter residue device is connected to the sedimentation tank and is used to filter oil residue and discharge wastewater into the sedimentation tank for sedimentation treatment. The heating and stirring device and the oil discharge device are both connected to the sedimentation tank. The heating and stirring device is used to heat and stir the oil in the sedimentation tank, and the oil discharge device is used to discharge the oil in the sedimentation tank. The drainage device is connected to the sedimentation tank and the water tank and is used to input the remaining wastewater in the sedimentation tank into the water tank and then discharge it. The sludge discharge device is connected to the water tank and is used to discharge the sludge in the water tank.

[0005] Compared with the prior art, this application uses a heating and stirring device to heat and stir the oil. As the temperature gradually rises, the surrounding oil will melt, which is beneficial for oil pump suction and reduces mechanical fatigue. This application is advantageous for heating oil, has low cost, does not require the installation of heating pipes, and is convenient for production.

[0006] In one possible implementation, the heating and oil draining device includes a stirring motor. The driving end of the stirring motor includes a rotating shaft, a bearing, and multiple blades. The rotating shaft is made of a heat-conducting material and includes a main section with a hollow tubular structure and an extension section. The lower end of the extension section is coaxially fixed to the upper end of the main section. The bearing is rotatably connected to the outer peripheral wall of the main section. The tip of each blade is fixed to the outer peripheral wall of the bearing and is distributed at equal angles. Heating wires are arranged axially on the inner walls of the main section and the extension section, so that the extension section can extend into the oil for heating treatment.

[0007] Compared with existing technologies, the above technical solution ensures that when the blades are inserted into the oil, the inserted section is also submerged. Heating is then achieved via a heating wire. After a period of heating, as the temperature gradually rises, the grease around the inserted section melts, significantly reducing blade resistance. At this point, the blades can be opened for slow stirring, allowing heat to dissipate. Alternatively, the heat can be allowed to dissipate on its own until the grease around the blades melts. Once the grease is fully melted, the stirring can be accelerated. This application is advantageous for heating grease, has lower costs, and is convenient to produce.

[0008] In one possible implementation, a heat-conducting ring is further provided between the outer peripheral wall of the main section and the inner peripheral wall of the bearing. The outer peripheral wall of the heat-conducting ring is fixed to the inner peripheral wall of the bearing, and the inner peripheral wall of the heat-conducting ring is fixed to the outer peripheral wall of the main section. The bearing is made of a heat-conducting material.

[0009] Compared with existing technologies, the above technical solution can also heat the bearing, increase the heating area, and allow the grease around the bearing to melt, thereby reducing the resistance at the blade root.

[0010] In one possible implementation, a first heat dissipation structure is provided on the outer peripheral wall of the extension section, and a second heat dissipation structure is provided on the outer peripheral wall of the bearing.

[0011] Compared with existing technologies, the above technical solution can increase the heat dissipation area and effectively heat the device.

[0012] In one possible implementation, the first heat dissipation structure includes a plurality of first strip-shaped heat dissipation grooves extending axially on the outer peripheral wall of the extension section, and each of the first strip-shaped heat dissipation grooves is distributed at equal intervals along the outer peripheral wall of the main section; the second heat dissipation structure includes a plurality of second strip-shaped heat dissipation grooves extending axially on the outer peripheral wall of the bearing, and each of the second strip-shaped heat dissipation grooves is distributed at equal intervals along the outer peripheral wall of the bearing.

[0013] Compared with the prior art, the first and second strip-shaped heat dissipation grooves of the above-mentioned technical solution can effectively expand the heat dissipation area on the extension section and the outer peripheral wall of the bearing, and effectively heat the grease.

[0014] In one possible implementation, a temperature sensor is provided at the upper end of the extension section.

[0015] Compared with existing technologies, the above technical solution can effectively detect temperature, heat at low temperatures, and stop heating when the temperature reaches a certain level, thus preventing the oil viscosity from increasing and the resistance from increasing when the oil temperature is too high.

[0016] In one possible implementation, each blade includes a front edge, the edge of which is provided with a toothed structure along its length.

[0017] Compared with existing technologies, the above-mentioned technical solution can create a local high pressure differential zone during rotation, thereby increasing the intensity of turbulent kinetic energy and the shear force of the blade.

[0018] In one possible implementation, the rotating shaft further includes an extension section; the upper end of the extension section is fixed to the lower end of the main section; an LED bead ring is provided on the outer peripheral wall of the extension section; and multiple LED beads are evenly distributed on the LED bead ring.

[0019] Compared with existing technologies, the above technical solution makes it easier to inspect or observe the internal oil condition using lights.

[0020] In one possible implementation, both the shaft and the bearing are made of stainless steel.

[0021] Compared with existing technologies, the above-mentioned technical solution can effectively conduct heat, is not easily corroded, and has a longer service life. Attached Figure Description

[0022] Figure 1 This is the official perspective view of this application;

[0023] Figure 2 This is a three-dimensional schematic diagram of the drive end of the stirring motor in this application;

[0024] Figure 3 This is a cross-sectional view of the drive end of the stirring motor in this application;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Filtering device, 2-Sedimentation tank, 3-Heating and stirring device, 4-Oil discharge device, 5-Drainage device, 6-Water tank, 7-Sludge discharge device, 8-Stirring motor, 9-Rotating shaft, 10-Bearing, 11-Blade, 12-Heating wire, 13-Heat-conducting ring, 91-Main section, 92-Extension section, 93-Extension section, 101-Second strip-shaped heat dissipation groove, 111-Front blade edge, 112-Rear blade edge, 921-First strip-shaped heat dissipation groove, 922-Temperature sensor, 931-LED bead ring, 9311-LED bead. Detailed Implementation

[0027] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0029] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] This embodiment discloses an oil-water separator, including a filter sludge device 1, a sedimentation tank 2, a heating and stirring device 3, an oil discharge device 4, a drainage device 5, a water tank 6, and a sludge discharge device 7. The filter sludge device 1 is connected to the sedimentation tank 2 and is used to filter out oil sludge and discharge the wastewater into the sedimentation tank 2 for sedimentation treatment. The heating and stirring device 3 and the oil discharge device 4 are both connected to the sedimentation tank 2. The heating and stirring device 3 is used to heat and stir the oil in the sedimentation tank 2, and the oil discharge device 4 is used to discharge the oil in the sedimentation tank 2. The drainage device 5 is connected to the sedimentation tank 2 and the water tank 6 and is used to input the remaining wastewater in the sedimentation tank 2 into the water tank 6 and then discharge it. The sludge discharge device 7 is connected to the water tank 6 and is used to discharge the sludge in the water tank 6. The heating and oil draining device 3 includes a stirring motor 8. The driving end of the stirring motor 8 includes a rotating shaft 9, a bearing 10, and multiple blades 11. The rotating shaft 9 is made of a heat-conducting material and includes a main section 91 with a hollow tubular structure and an extension section 92. The lower end of the extension section 92 is coaxially fixed to the upper end of the main section 91. The bearing 10 is rotatably connected to the outer peripheral wall of the main section 91. The tip of each blade 11 is fixed to the outer peripheral wall of the bearing 10 and is distributed at equal angles. Heating wires 12 are axially arranged on the inner walls of the main section 91 and the extension section 92, allowing the extension section 92 to extend into the oil for heating. The rotating shaft 9 and the bearing 10 are both made of stainless steel.

[0032] For details, see attached. Figure 1As shown, the working principle of the oil-water separator is existing technology. Its working principle is as follows: A filter screen is installed in the filter sludge device 1. After the sewage enters, it will be filtered by the filter screen in the filter sludge device 1 to remove large oil particles. The oil sludge will be discharged separately. The filtered sewage will directly enter the sedimentation tank 2 for static sedimentation. There is a density difference between oil and water, so the oil will float on the water surface. The oil will be melted by heating and stirring by the heating and stirring device 3. The oil will be sucked out and discharged by the oil discharge device 4, such as an oil pump. The remaining sewage will be discharged by the drainage device 5, such as a water pump, into the water tank 6. The sludge that still settles at the bottom of the sewage will be further sucked out and discharged by the sludge discharge device 7, such as a cutter pump. Those skilled in the art can implement the above-mentioned oil-water separator based on existing technology, so it will not be described in detail.

[0033] In this embodiment, the main section 91 and the extension section 92 are integrally formed, and the diameter of the main section 91 is larger than the diameter of the extension section 92, which facilitates the fixing of the bearing 10 to the outer peripheral wall of the main section 91. The heating wire 12 fills the inner peripheral wall of the extension section 92 and fits tightly with it, so that the heat of the heating wire 12 can be quickly transferred to the tube wall of the extension section 92. Stainless steel can effectively conduct heat and is not easily corroded, resulting in a long service life. The lower end of the main section 91 is electrically connected to the drive end of the stirring motor 8 through an existing through-hole conductive ring. Specifically, the through-hole conductive ring is electrically connected to the stirring motor 8, and the lower end of the main section 91 is fixed to the rotor of the through-hole conductive ring. The lower end of the heating wire 12 can be connected to the corresponding wiring terminal after passing through the through hole of the through-hole conductive ring with a lead wire. In this way, when the drive end of the stirring motor 8 rotates, it will drive the main section 91 and the extension section 92 to rotate, and the heating wire 12 can also be energized and heated. Those skilled in the art can easily install it to the drive end of the stirring motor 8 using the existing conductive ring, so it will not be described in detail. When blade 11 is inserted into the oil, the insertion section 92 will also be submerged. At this time, through the heating wire 12, after a period of heating treatment, as the temperature gradually rises and the heat diffuses, the grease around the insertion section 92 will melt. The resistance of blade 11 will be greatly reduced. At this time, blade 11 can be turned on for slow stirring, and the heat will diffuse accordingly. Alternatively, the heat can be allowed to diffuse further on its own until the grease around blade 11 also melts. Once the grease is fully melted, the stirring of blade 11 can be accelerated. This application is beneficial for heating grease, has low cost, is easy to produce, and has a long service life.

[0034] As attached Figure 1 and attached Figure 2 As shown, in some embodiments, a heat-conducting ring 13 is also included, which is disposed between the outer peripheral wall of the main section 91 and the inner peripheral wall of the bearing 10. The outer peripheral wall of the heat-conducting ring 13 is fixed on the inner peripheral wall of the bearing 10, and the inner peripheral wall of the heat-conducting ring 13 is fixed on the outer peripheral wall of the main section 91. The bearing 10 is made of a heat-conducting material.

[0035] For details, see attached. Figure 1 and attached Figure 2As shown, in this embodiment, the heat-conducting ring 13 is made of thermally conductive silicone, which effectively conducts heat, is not easily corroded, and can also buffer the rotational force of the blades. The heating wire 12 fills the inner peripheral wall of the main section 91 and fits tightly with it. During heating, the heat from the heating wire 12 can be quickly transferred to the tube wall of the main section 91, and then sequentially transferred to the heat-conducting ring 13 and the bearing 10. This increases the heating area, causing the grease around the bearing 10 to melt and reducing the resistance at the blade root of the blade 11.

[0036] As attached Figure 1 As shown, in some embodiments, a first heat dissipation structure is provided on the outer peripheral wall of the extension section 92, and a second heat dissipation structure is provided on the outer peripheral wall of the bearing 10. The first heat dissipation structure includes a plurality of axially extending first strip-shaped heat dissipation grooves 921 formed on the outer peripheral wall of the extension section 92, and each first strip-shaped heat dissipation groove 921 is evenly distributed along the outer peripheral wall of the main section 91; the second heat dissipation structure includes a plurality of axially extending second strip-shaped heat dissipation grooves 101 formed on the outer peripheral wall of the bearing 10, and each second strip-shaped heat dissipation groove 101 is evenly distributed along the outer peripheral wall of the bearing 10. The first strip-shaped heat dissipation grooves 921 and the second strip-shaped heat dissipation grooves 101 can effectively increase the heat dissipation area on the extension section 92 and the outer peripheral wall of the bearing 10, and effectively heat the grease.

[0037] As attached Figure 1 As shown, in some embodiments, a temperature sensor 922 is provided at the upper end of the extension section 92.

[0038] Specifically, in this embodiment, it should be noted that the melting point of animal fats such as lard or tallow is generally around 50°C, while the melting point of vegetable oils such as peanut oil or palm oil is between 3°C and 45°C. The temperature sensor 922 can detect the oil temperature. When the oil temperature exceeds a certain value, such as 55°C in this embodiment, the heating wire 12 is controlled to stop heating to prevent the oil from becoming too viscous, leading to increased resistance or damage to the temperature sensor 922, thus extending its service life. The leads of the temperature sensor 922 can be formed by routing wires through the outer walls of the main section 91 and the extension section 92, and the outside of the leads needs to be sealed with a high-temperature resistant plastic shell.

[0039] As attached Figure 1 As shown, in some embodiments, each blade 11 includes a front edge 111, and the edge of the front edge 111 is provided with a toothed structure along the length direction.

[0040] Specifically, in this embodiment, the height of the front blade edge 111 is slightly higher than that of the rear blade edge 112, and the rotation direction of the blade 11 is towards the rear blade edge 112. The rear blade edge 112 shears the oil surface. At this time, the toothed structure of the front blade edge 111 will form a local high pressure differential zone when rotating, which will increase the intensity of turbulent kinetic energy, reduce the tail vortex dissipation, and increase the shear force of the rear blade edge 112.

[0041] As attached Figure 1 and attached Figure 2 As shown, in some embodiments, the rotating shaft 9 further includes an extension section 93; the upper end of the extension section 93 is fixed to the lower end of the main section 91; an LED bead ring 931 is provided on the outer peripheral wall of the extension section 93; a plurality of LED beads 9311 are evenly distributed on the LED bead ring 931.

[0042] Specifically, in this embodiment, the extension section 93 is also a tubular structure, coaxially arranged and integrally formed with the lower end of the main section 91, facilitating the lead wire of the heating wire 12 to be led out from the lower end of the extension section 93. The lower end of the extension section 93 is electrically connected to the drive end of the stirring motor 8 through an existing through-hole conductive ring. Specifically, the through-hole conductive ring is electrically connected to the stirring motor 8, the lower end of the extension section 93 is fixed to the rotor of the through-hole conductive ring, and the lower end of the heating wire 12 is connected to the corresponding wiring terminal after passing through the through hole of the through-hole conductive ring with a lead wire. In this way, when the drive end of the stirring motor 8 rotates, it will drive the extension section 93, the main section 91, and the extension section 92 to rotate, and the heating wire 12 can also be energized and heated. Those skilled in the art can easily install it to the drive end of the stirring motor 8 using the existing conductive ring, so it will not be described in detail here. The LED chip 9311 can be powered independently by an internal battery, and the light can be used for maintenance or to observe the internal oil level. The LED chip 9311 is fixed to the outer peripheral wall of the extension section 93 via a bearing structure, so that the LED chip 9311 remains stationary relative to the extension section 93 during rotation, preventing glare. Alternatively, the LED chip 9311 could be directly fixed to the outer peripheral wall of the extension section 93. While this would directly drive the LED chip 9311 to rotate when the extension section 93 rotates, it would be more convenient to manufacture and have a lower cost.

[0043] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0044] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An oil-water separator characterized by, It includes a filter cake device (1), a sedimentation tank (2), a heating and stirring device (3), an oil discharge device (4), a drainage device (5), a water tank (6), and a sludge discharge device (7). The filter residue device (1) is connected to the sedimentation tank (2) and is used to filter out the oil residue and then discharge the wastewater into the sedimentation tank (2) for sedimentation treatment. The heating and stirring device (3) and the oil discharge device (4) are both connected to the sedimentation tank (2). The heating and stirring device (3) is used to heat and stir the oil in the sedimentation tank (2), and the oil discharge device (4) is used to discharge the oil in the sedimentation tank (2). The drainage device (5) is connected to the sedimentation tank (2) and the water tank (6) and is used to discharge the remaining sewage in the sedimentation tank (2) into the water tank (6); The sludge discharge device (7) is connected to the water tank (6) and is used to discharge the sludge in the water tank (6).

2. An oil-water separator according to claim 1, characterized in that The heating and stirring device (3) includes a stirring motor (8), the driving end of which includes a rotating shaft (9), a bearing (10), and multiple blades (11); the rotating shaft (9) is made of a heat-conducting material and includes a main section (91) and an extension section (92) in the form of a hollow tubular structure; the lower end of the extension section (92) is coaxially fixed with the upper end of the main section (91); the bearing (10) is rotatably connected to the outer peripheral wall of the main section (91); the tip of each blade (11) is fixed to the outer peripheral wall of the bearing (10) and is distributed at equal angles; heating wires (12) are arranged axially on the inner walls of the main section (91) and the extension section (92), so that the extension section (92) can be inserted into the oil for heating treatment.

3. An oil-water separator according to claim 2, characterised in that It also includes a heat-conducting ring (13) disposed between the outer peripheral wall of the main section (91) and the inner peripheral wall of the bearing (10). The outer peripheral wall of the heat-conducting ring (13) is fixed on the inner peripheral wall of the bearing (10), and the inner peripheral wall of the heat-conducting ring (13) is fixed on the outer peripheral wall of the main section (91). The bearing (10) is made of a heat-conducting material.

4. An oil-water separator according to claim 3, characterised in that The outer peripheral wall of the extension section (92) is provided with a first heat dissipation structure, and the outer peripheral wall of the bearing (10) is provided with a second heat dissipation structure.

5. An oil-water separator according to claim 4, characterised in that The first heat dissipation structure includes a plurality of first strip heat dissipation grooves (921) extending axially on the outer peripheral wall of the extension section (92), and each of the first strip heat dissipation grooves (921) is distributed at equal intervals along the outer peripheral wall of the main section (91); the second heat dissipation structure includes a plurality of second strip heat dissipation grooves (101) extending axially on the outer peripheral wall of the bearing (10), and each of the second strip heat dissipation grooves (101) is distributed at equal intervals along the outer peripheral wall of the bearing (10).

6. An oil-water separator according to claim 2, 3, 4 or 5, characterised in that A temperature sensor (922) is provided at the upper end of the extension section (92).

7. A water / oil separator according to claim 2, 3, 4 or 5 or said separator, characterized in that Each of the blades (11) includes a front edge (111) with a toothed structure along its length at the edge of the front edge (111).

8. A water / oil separator according to claim 2, 3, 4 or 5 or the one described above, characterized in that The rotating shaft (9) further comprises an extension section (93); the upper end of the extension section (93) is fixed with the lower end of the main section (91); a lamp bead ring (931) is arranged on the outer peripheral wall of the extension section (93); and a plurality of lamp beads (9311) are evenly arranged on the lamp bead ring (931).

9. An oil-water separator according to claim 2, 3, 4 or 5 or the one described above, characterised in that The rotating shaft (9) and the bearing (10) are both made of stainless steel.

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