A new oil-water separation device

Abstract

The application discloses a novel oil-water separation device, which comprises a working box, a steady flow plate, an oil pumping device and a control device, wherein the control device comprises an oil liquid monitoring element and a centralized control module; kitchen liquid flows into an oil-water separation area through an inlet and is stratified according to its own density difference; the steady flow plate is used for buffering the kitchen liquid in the oil-water separation area and guiding the oil bubbles in the kitchen liquid to the upper part of the oil-water separation area to form an oil collection layer; and the water in the kitchen liquid sinks to the lower part of the oil-water separation area and is collected in a clean water area and then is overflowed outward through a drainage port; and the lowest end of the drainage port is higher than or equal to the inner top surface of the working box in the oil-water separation area. Compared with the prior art, the application prevents the overflow of the oil collection layer and reduces the fluctuation of the oil collection layer during drainage by arranging the drainage port above the oil collection layer.

Description

Technical Field

[0001] This invention relates to the technical field of kitchen waste treatment, and in particular to a novel oil-water separation device. Background Technology

[0002] Oil-water separators utilize the density difference between oil and water to physically separate the two phases, and are widely used in catering wastewater treatment. Based on different separation principles, oil-water separation technologies are mainly divided into gravity separation, centrifugal separation, and flotation separation. Among these, gravity oil-water separation has become the most widely used method due to its simple structure, lack of external power, and low operating costs. A typical gravity oil-water separator has an inlet, an outlet, and an oil drain within the separation tank. The oil-water mixture naturally separates under gravity; the less dense oil phase rises and accumulates in the upper layer, forming an oil layer, while the denser water phase sinks to the lower layer, thus achieving oil-water separation.

[0003] However, existing gravity-type oil-water separators generally suffer from the following technical defects in practical applications: 1. The drainage process can easily disturb and damage the already formed oil layer. In continuously operating oil-water separation equipment, when the bottom drain outlet discharges the lower layer of clean water, the fluid flow in the separation chamber will generate a downward suction force, which will drive the upper oil layer downward, causing the oil phase and water phase that have already been separated to mix again, thereby reducing the separation efficiency or even causing the separation to fail.

[0004] 2. The problem of "oil-water entrainment" caused by improper outlet placement is quite prominent. In some existing equipment, the outlet position is either below the theoretical oil-water interface height or too close to it. For example, in horizontal separators, the distance between the oil-water interface and the outlet is too short, easily causing secondary entrainment and insufficient separation time. When the drainage flow fluctuates or the liquid level drops, the upper floating oil is easily drawn into the drain outlet and discharged with the water, resulting in excessive oil content in the discharged water and wasting oil phase resources.

[0005] 3. Due to the lack of a flow stabilization structure in the existing equipment design, when there is kitchen waste liquid inside the equipment, the newly input kitchen waste liquid will directly impact the oil layer and the internal liquid, causing the mixture inside the equipment to fluctuate and destroy the stratification effect, thereby affecting the efficiency and effect of oil-water separation.

[0006] In summary, existing gravity-type oil-water separators have significant shortcomings in their structural design, particularly in the relative positional relationship between the outlet and the oil layer. Issues such as fluid disturbance during drainage, oil-water entrainment due to improper outlet height, and interface instability caused by inlet water impact all constitute key technical bottlenecks restricting separation efficiency and effluent water quality. Summary of the Invention The technical problem to be solved by the present invention is to provide a novel oil-water separation device.

[0007] To achieve the above objectives, the present invention discloses a novel oil-water separation device, comprising a working chamber, a flow stabilizer, an oil extraction device, and a control device, wherein the control device includes an oil monitoring element and a centralized control module.

[0008] The working chamber is a sealed structure, and a partition plate is provided inside the working chamber to separate an oil-water separation zone and a clear water zone. The lower parts of the oil-water separation zone and the clear water zone are connected. A liquid inlet is provided at the top of the working chamber. A drain outlet is provided on the upper section of the side wall of the clear water zone. The flow stabilizer is inclinedly arranged in the oil-water separation zone. The oil extraction device and the oil monitoring element are respectively arranged in the upper part of the oil-water separation zone.

[0009] Kitchen waste liquid flows into the oil-water separation zone through the liquid inlet and separates into layers based on its density difference. The flow stabilizer plate buffers the kitchen waste liquid in the oil-water separation zone and guides the oil bubbles floating in the kitchen waste liquid to the upper part of the oil-water separation zone to form an oil collection layer. The water in the kitchen waste liquid sinks to the lower part of the oil-water separation zone and is collected in the clear water zone, overflowing outward through the drain outlet. The bottom of the drain outlet is higher than or equal to the inner top surface of the working box in the oil-water separation zone.

[0010] The oil monitoring element is used to monitor the thickness of the oil collection layer and send an electrical signal to the control module. The control module then controls the oil extraction device to extract and collect the oil from the oil collection layer.

[0011] Furthermore, a buffer distribution pipe is provided in the oil-water separation zone, and the buffer distribution pipe is connected to the liquid inlet section.

[0012] The buffer distribution pipe is provided with a first drain window on both the front and rear sides, and a second drain window is provided at the bottom of the buffer distribution pipe. The oil-water mixture flows into the buffer distribution pipe through the liquid inlet and flows directionally into the oil-water separation zone through the first drain window and the second drain window.

[0013] The flow stabilizer plate is positioned vertically opposite the second drain window, and the flow stabilizer plate further buffers the kitchen waste liquid flowing into the oil-water separation zone.

[0014] Furthermore, a first heating tube is provided inside the buffer distribution pipe, and a second heating tube is provided inside the oil-water separation zone. The second heating tube is located below the flow stabilizer plate. The first heating tube and the second heating tube are electrically connected to the central control module, and the operating temperature of the first heating tube and the second heating tube is adjusted and set by the central control module.

[0015] The buffer distribution pipe is provided with a buffer zone and a drainage zone. The buffer zone is connected to the inlet section, and the first drainage window and the second drainage window are respectively connected to the drainage zone.

[0016] Furthermore, a partition plate is provided on the top surface of the working chamber. One side of the partition plate in the width direction is fixedly connected to an inner wall of the working chamber, and a flow channel is formed between the other side of the partition plate and the inner wall of the working chamber. The flow channel allows the oil collection layer located in the upper part of the oil-water separation zone to circulate.

[0017] One end of the buffer distribution pipe is fixedly connected to the side of the working box, and the other end is fixedly connected to the partition plate.

[0018] The bottom of the partition plate is lower than the bottom of the buffer distribution tube, and the width of the partition plate is greater than the width of the buffer distribution tube.

[0019] A vent is provided on the top of the working box located in the clear water area.

[0020] Furthermore, the flow stabilizers are arranged in two layers from top to bottom. The upper layer has a horizontal flow stabilizer for diverting and buffering the kitchen waste liquid flowing into the oil-water separation zone. The lower layer has two flow stabilizers, which are spaced apart with the upper flow stabilizer as the center to further buffer the kitchen waste liquid. They are also inclined towards the oil extraction port of the oil extraction device.

[0021] Furthermore, a drain outlet is provided on the lower section of the side wall of the clear water area, and a normally closed drain valve is provided at the drain outlet. The drain valve is airtightly connected to a drain pipe, and a drain pipe is airtightly connected at the drain outlet. The outlet end of the drain pipe is connected to the outer periphery of the drain pipe, and a normally open overflow valve is provided on the drain pipe.

[0022] Furthermore, the oil extraction device includes an oil drain pipe and an oil pump. The oil inlet end of the oil drain pipe passes through the working box and is located in the oil-water separation zone, while its oil outlet end is located outside the working box. The oil pump is fixedly mounted on the oil drain pipe.

[0023] The oil inlet of the drain pipe is positioned at a height higher than the bottom of the oil monitoring element.

[0024] Furthermore, the working chamber is also equipped with a water replenishment device, which includes a water replenishment pipe and a solenoid valve. The water outlet of the water replenishment pipe is located in the oil-water separation zone, and the water inlet of the water replenishment pipe is located outside the working chamber for connecting to an external water supply device. The solenoid valve is fixedly installed on the water replenishment pipe.

[0025] Furthermore, the working chamber is also equipped with a water circulation device, which includes a first circulation pipe, a second circulation pipe, and a water circulation pump. The inlet end of the first circulation pipe is located in the clean water zone, and the water circulation pump is fixedly installed outside the working chamber. The outlet end of the first circulation pipe is airtightly connected to the inlet of the water circulation pump, the inlet end of the second circulation pipe is airtightly connected to the outlet of the water circulation pump, and the outlet end of the second circulation pipe is airtightly connected to the outer side of the liquid inlet. The second circulation pipe is in communication with the liquid inlet.

[0026] Furthermore, the control device also includes a water level monitoring element, and the centralized control module includes a display screen and a communication centralized control element, with the display screen and the communication centralized control element forming an electrical connection.

[0027] The water level monitoring element is fixedly installed on the working box, and its monitoring end passes through the top of the working box and is located in the clear water area. The water level monitoring element is used to monitor the water level height in the clear water area, and the bottom of the water level monitoring element is lower than the bottom of the drain outlet.

[0028] The oil monitoring element and the oil pump are electrically connected to the communication control element. The oil monitoring element monitors the height change of the oil collection layer and sends an electrical signal to the communication control element. After processing by the communication control element, the oil pump is controlled to start / stop.

[0029] The water level monitoring element and the solenoid valve are electrically connected to the communication control element. The water level monitoring element monitors the water level in the clear water zone and sends an electrical signal to the communication control element. After processing by the communication control element, an electrical signal is sent to the solenoid valve. When the solenoid valve opens, external clear water enters the oil-water separation zone through the water supply pipe.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The working chamber adopts a closed design and the height of the drain outlet is flush with the liquid inlet, which effectively prevents the mixture and oil collection layer from overflowing. The closed design of the working chamber can effectively prevent the odor inside the chamber from spreading outward. Furthermore, the top placement of the drain outlet can reduce the fluctuation of the oil collection layer during drainage. 2. This equipment achieves multi-level slow flow function for kitchen waste liquid. Specifically, by setting up a buffer distribution pipe, the oil-water mixture is initially buffered and evenly distributed to the oil-water separation zone to effectively prevent the oil-water mixture from directly impacting the oil collection layer. At the same time, the layered and inclined layout of the flow stabilizer plate further buffers the kitchen waste liquid to ensure the layering effect and effectively prevent the inflowing kitchen waste liquid from disturbing the oil and liquid balance in the working chamber. Attached Figure Description

[0031] Figure 1 This is a front view of the overall structure of Example 1; Figure 2 This is a schematic diagram of the overall structural cross-section of Example 1; Figure 3 This is a top cross-sectional view of this embodiment; Figure 4 This is a circuit diagram of the control device in Example 1; Figure 5 This is a schematic diagram of the structure of Embodiment 2; Figure 6 This is a schematic diagram of the solid-liquid separation module in Example 2. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the following will be combined with... Figures 1-6 The invention will be further described in detail with reference to the accompanying drawings.

[0033] Example 1: Reference Figure 1 and Figure 2 As shown, a novel oil-water separation device includes a working chamber 1, a flow stabilizer 2, an oil extraction device 3, a water replenishment device 4, a water circulation device 5, and a control device 6.

[0034] A partition plate 11 is installed at the top of the working chamber 1, dividing the interior of the working chamber 1 into an oil-water separation zone 12 and a clear water zone 13. The top, front and rear outer sides of the partition plate 11 are fixedly connected to the top and front and rear inner walls of the working chamber 1, and the bottom of the partition plate 11 is spaced from the bottom of the working chamber 1 to form a channel for water flow. An oil extraction device is installed in the oil-water separation zone 12 and is adjacent to the partition plate 11.

[0035] The top of the working box 1 is provided with a liquid inlet 14, which is connected to the oil-water separation zone 12.

[0036] A drain outlet 15 is provided on the upper half of the right side of the working chamber 1, and the drain outlet 15 is connected to the clear water zone 13. In this embodiment, the drain outlet 15 is positioned at the same height as the liquid inlet 14, and the bottom of the drain outlet 15 is higher than or equal to the top surface of the working chamber 1 inside the oil-water separation zone 12. By creating a height difference between the drain outlet 15 and the oil-water separation zone 12, oil spillage is prevented.

[0037] A drain outlet 17 is located on the lower right side of the working chamber 1, and the drain outlet 17 is connected to the clean water zone 13. A normally closed drain valve 171 is installed at the drain outlet 17, and the output end of the drain valve 171 is airtightly connected to a drain pipe 172. A drain pipe 151 is airtightly connected to the drain outlet 15, and the outlet end of the drain pipe 151 is connected to the outer periphery of the drain pipe 172. A normally open overflow valve 152 is installed on the drain pipe 151. In use, the water flowing out of the drain outlet 15 flows through the drain pipe 151 to the drain pipe 172 and is discharged and collected.

[0038] When the equipment is being cleaned or periodically the drain valve 171 is opened, the fine particles deposited at the bottom of the working chamber 1 are discharged out through the drain port 17 and the drain pipe 172.

[0039] A vent 18 is provided on the top of the working box 1 located in the clear water area 13 to balance the air pressure inside and outside the working box 1.

[0040] Furthermore, a buffer distribution pipe 7 is provided in the upper half of the oil-water separation zone 12, and a partition plate 16 is provided on the inner top surface of the working box 1 located in the oil-water separation zone 12. The two ends of the buffer distribution pipe 7 are fixedly connected to the side wall inside the working box 1 and the left side of the partition plate 16, respectively.

[0041] In this embodiment, the outer contour of the buffer distribution tube 7 is U-shaped, and the open end of the buffer distribution tube 7 faces the top of the working box 1. The liquid inlet 14 is in communication with the inner cavity of the buffer distribution tube 7.

[0042] The buffer distribution pipe 7 is provided with a first drain window 71 on both the front and rear sides, and a second drain window 72 is provided at the bottom of the buffer distribution pipe 7. The oil-water mixture in the buffer distribution pipe 7 is directed to flow into the oil-water separation zone 12 through the first drain window 71 and the second drain window 72, so as to prevent the oil-water mixture from directly impacting the liquid in the oil-water separation zone 12 and affecting the separation effect.

[0043] Furthermore, the bottom of the partition plate 16 is lower than the bottom of the buffer distribution tube 7, and its width is greater than the width of the buffer distribution tube 7. Combined Figure 3 A flow channel is formed by the gap between one side of the partition plate 16 in the width direction and the inner wall of the oil-water separation zone 12 (not shown in the figure).

[0044] Combined Figure 3 As shown, further, the buffer distribution pipe 7 is provided with a buffer zone 73 and a drainage zone 74. The buffer zone 73 is vertically opposite to and connected to the inlet section 14. The first drainage window 71 and the second drainage window 72 are respectively connected to the drainage zone 74. During operation, the mixed liquid flowing out of the inlet section 14 is buffered in the buffer zone 73 to regulate its liquid flow. The buffered mixed liquid is then evenly distributed in the drainage zone 74 through the first drainage window 71 and the second drainage window 72 into the oil-water separation zone 12.

[0045] The flow stabilizer 2 is disposed in the oil-water separation zone 12 and is located below the buffer distribution pipe 7. In this embodiment, there are three flow stabilizers 2, but the number of flow stabilizers 2 is not limited in this embodiment.

[0046] In this embodiment, the three flow stabilizers 2 are arranged in two layers, with the upper layer being a horizontally arranged flow stabilizer 2 that is vertically opposite to the second drain window 72. The lower layer consists of two horizontally spaced flow stabilizers 2, with the upper flow stabilizer 2 positioned to the left and right of it. In this embodiment, the flow stabilizers 2 of the second layer are all inclined toward the partition plate 11, thereby guiding the flow of the separated oil bubbles.

[0047] In use, the mixture flowing out from the buffer distribution pipe 7 is further buffered by the flow stabilizer plate 2 and flows downward. The oil-water mixture is stored in the oil-water separation zone 12 and is separated into layers based on its density difference. The oil bubbles with lower density gather upward on the flow stabilizer plate 2 to form large oil bubbles, and are guided to the oil extraction port of the oil extraction device 3 by the inclined flow stabilizer plate 2. At the same time, an oil collection layer 121 is formed floating in the upper part of the oil-water separation zone 12, and the water with higher density sinks below the oil-water separation zone 12 and flows to the clear water zone 13 for collection.

[0048] This embodiment uses a buffer distribution pipe to initially buffer the oil-water mixture and distribute it evenly to the oil-water separation zone, effectively preventing the oil-water mixture from directly impacting the oil collection layer. At the same time, the layered and inclined layout of the flow stabilizer further buffers, diverts, and guides oil bubbles in the kitchen waste liquid. The above structure achieves step-by-step buffering of the kitchen waste liquid, thereby ensuring the layering effect of the kitchen waste liquid and effectively preventing the inflowing kitchen waste liquid from disrupting the oil and liquid balance of the kitchen waste liquid stored in the working chamber. Furthermore, in this embodiment, by uniformly setting the flow stabilizer 2 and the buffer distribution pipe 7 on the left side of the oil-water separation zone 12, a relatively stable oil and liquid storage area is formed on the right side of the oil-water separation zone 12, ensuring that the kitchen waste liquid is separated into layers in a relatively static state, effectively ensuring the oil-liquid separation effect. Meanwhile, the size setting of the partition plate 16 can effectively reduce the direct impact of the liquid flowing out from the buffer distribution pipe 7 on the right side of the oil collection layer 121 (i.e., the area between the partition plate 16 and the partition plate 11) to avoid fluctuations. The design of the flow channel ensures that the oil on both sides of the oil collection layer 121 flows to each other, ultimately ensuring the oil pumping effect and efficiency of the oil pumping device 3.

[0049] Furthermore, a first heating tube 75 is horizontally installed inside the buffer distribution tube 7. The first heating tube 75 keeps the kitchen waste liquid and oil collection layer 121 in the buffer distribution tube 7 at a constant temperature to prevent emulsification and affect the flow and separation effect of the oil-water mixture. A second heating pipe 122 is installed in the oil-water separation zone 12. The second heating pipe 122 is located below the flow stabilizer plate 2. The second heating pipe 122 keeps the oil-water separation zone 12 and the water in the oil-water separation zone 12 at a constant temperature, thereby ensuring the oil-water separation effect.

[0050] An oil extraction device 3 is installed in the oil-water separation zone 12. The oil extraction device 3 includes an oil discharge pipe 31 and an oil pump 32. The oil discharge pipe 31 is fixedly installed above the working box 1. Specifically, the oil inlet end of the oil discharge pipe 31 passes through the working box 1 and is installed in the oil-water separation zone 12, while its oil outlet end is located outside the working box 1. The oil pump 32 is fixedly installed on the oil discharge pipe 31.

[0051] The water replenishment device 4 includes a water replenishment pipe 41 and a solenoid valve 42. The water replenishment pipe 41 is located in the oil-water separation zone 12. The outlet end of the drain pipe 151 is adjacent to the bottom of the working box 1, and the inlet end of the water replenishment pipe 41 is located outside the working box 1 for connecting to an external water supply device. The solenoid valve 42 is fixedly installed on the water replenishment pipe 41 and is used to control the flow of water between the outlet end and the inlet end of the water replenishment pipe 41.

[0052] The water circulation device 5 includes a first circulation pipe 51, a second circulation pipe 52, and a water circulation pump 53. The inlet end of the first circulation pipe 51 is located in the clean water zone 13, and its outlet end is located below the working chamber 1. The water circulation pump 53 is fixedly installed outside the working chamber 1. The outlet end of the first circulation pipe 51 is airtightly connected to the inlet of the water circulation pump 53, the inlet end of the second circulation pipe 52 is airtightly connected to the outlet of the water circulation pump 53, and the outlet end of the second circulation pipe 52 is airtightly connected to the outer surface of the liquid inlet section 14. The second circulation pipe 52 is in communication with the liquid inlet section 14.

[0053] Reference Figure 4 As shown, the control device 6 includes an oil monitoring element 61, a water level monitoring element 62, and a central control module 63. The central control module 63 includes a display screen 631 and a communication central control element 632. The display screen 631 and the communication central control element 632 are electrically connected.

[0054] The oil monitoring element 61 is fixedly installed on the top of the working box 1, and its monitoring end passes through the top of the working box 1 and is located in the oil collection layer 121. Furthermore, the oil inlet end of the oil drain pipe 31 is installed at a height higher than the bottom of the oil monitoring element 61.

[0055] In this embodiment, the oil monitoring element 61 is a float sensor or other common sensor used to monitor changes in liquid level.

[0056] The water level monitoring element 62 is fixedly installed on the top of the working box 1, and its monitoring end passes through the top of the working box 1 and is located in the clear water zone 13. Furthermore, the bottom end of the water level monitoring element 62 is lower than the lowest end of the drain outlet 15.

[0057] The first heating element 75 and the second heating element 122 are electrically connected to the communication control element 632, respectively. The operating temperatures of the first heating element 75 and the second heating element 122 are adjusted and set by the communication control element 632 through the operation display screen 631.

[0058] The oil monitoring element 61 and the oil pump 32 are electrically connected to the communication control element 632. The oil monitoring element 61 monitors the height change of the oil collection layer 121 and sends an electrical signal to the communication control element 632. After processing by the communication control element 632, it sends a work / stop electrical signal to the oil pump 32, thereby extracting the oil from the oil collection layer 121 and discharging it through the oil drain pipe 31 to be collected in the oil-water separation zone 12.

[0059] The water level monitoring element 62, the solenoid valve 42, and the water circulation pump 53 are electrically connected to the communication control element 632. The water level monitoring element 62 monitors the water level in the clear water zone 13 and sends an electrical signal to the communication control element 632. After processing by the communication control element 632, an electrical signal is sent to the solenoid valve 42. When the solenoid valve 42 is opened, external clear water enters the oil-water separation zone 12 through the water supply pipe 41, thereby improving the oil-water separation effect.

[0060] The communication control unit 632 periodically controls the water circulation pump 53 to draw clean water from the clean water zone 13 and return it to the liquid inlet section 14 for secondary oil-water separation when the water circulation pump 53 is turned on, thereby further improving the oil-water separation effect.

[0061] Example 2: Reference Figure 5 and Figure 6 As shown, the other conditions in this embodiment are the same as in embodiment 1, except that: it also includes the arrangement of the solid-liquid separation module 8 and the flow stabilizer 2.

[0062] The output end of the solid-liquid separation module 8 is connected to the liquid inlet section 14 via the liquid inlet pipe 141, and the end of the liquid inlet pipe 141 is airtightly connected to the liquid inlet section 14. Compared with the prior art, this device achieves a fully sealed working environment, effectively reducing the emission of odors from the working chamber 1.

[0063] The solid-liquid separation module 8 includes a solid collection cylinder 81 and a slow-flow trough 82. The solid collection cylinder 81 is inclined and mounted above the slow-flow trough 82. A solid discharge port 811 is provided on one side of the solid collection cylinder 81. A variable diameter and variable pitch screw 812 is rotatably provided inside the solid collection cylinder 81. Several small holes 813 are provided at the bottom of the solid collection cylinder 81 and a filter screen layer 814 is laid there. A liquid discharge port 821 is opened on one side of the slow-flow trough 82 and is connected to the liquid inlet pipe 141.

[0064] When kitchen waste is fed into the solid collection cylinder 81, the variable diameter and variable pitch screw 812 inside the solid collection cylinder 81 rotates, forcing the kitchen waste to squeeze out the kitchen waste liquid. The remaining solids are discharged from the solid discharge port 811, while the kitchen waste liquid enters the slow flow tank 82 through the small hole 813 and the filter layer 814, and flows into the oil-water separation zone 12 along the liquid discharge port 821, the liquid inlet pipe 141 and the liquid inlet section 14.

[0065] Furthermore, the diameter of the variable-diameter, variable-pitch screw 812 increases towards the discharge port 811, while the blade spacing between the blades on the variable-diameter, variable-pitch screw 812 decreases towards the discharge port 811, thereby enhancing the ability of the variable-diameter, variable-pitch screw 812 to compress the liquid waste in the kitchen waste. The slow-flow trough 82 has a maintenance port 822 on its side for subsequent repairs and a water inlet 823 at its bottom for easy water addition and cleaning.

[0066] In this embodiment, there are four flow stabilizers 2, arranged in two layers, with two flow stabilizers 2 in each layer. More preferably, the two flow stabilizers 2 in each layer are arranged in a V-shape, with the flow stabilizers 2 in the upper and lower layers staggered. This arrangement of the flow stabilizers 2 further improves the guiding effect on oil bubbles and the slowing effect on kitchen waste liquid, keeping the kitchen waste liquid in the oil-water separation zone 12 in a stable state to achieve better oil-water separation. Simultaneously, the floating oil can be better guided to the upper part of the oil-water separation zone 12.

[0067] Example 3: Reference Figure 1As shown, the other conditions in this embodiment are the same as in Embodiments 1 and 2, except that: the bottom of the working chamber 1 is provided with an inclined section 111, a horizontal section 123, and a recessed portion 131, which are arranged sequentially along the axial direction of the working chamber 1. Specifically, the higher end of the inclined section 111 is connected to the side wall of the oil-water separation zone 12 inside the working chamber 1, the recessed portion 131 is located in the clear water zone 13, and the two ends of the horizontal section 123 are connected to the lower end of the inclined section 111 and the recessed portion 131, respectively. Fine particles in the working chamber 1 flow through the inclined section 111 and the horizontal section 123 to the recessed portion 131 for collection. When the equipment is being cleaned, the drain valve 171 is opened, and the fine particles in the recessed portion 131 are discharged outward through the drain port 17 and the drain pipe 172.

[0068] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They cannot be used to limit the scope of protection of the present invention. All modifications made according to the spirit of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An oil-water separation device, characterized in that, It includes a working box (1), a flow stabilizer (2), an oil pumping device (3) and a control device (6), wherein the control device (6) includes an oil monitoring element (61) and a central control module (63). The working box (1) is a sealed structure. A partition plate (11) is provided inside the working box (1) to separate the working box (1) into an oil-water separation zone (12) and a clear water zone (13). The lower parts of the oil-water separation zone (12) and the clear water zone (13) are connected. A liquid inlet (14) is provided at the top of the working box (1). A drain outlet (15) is provided on the upper section of the side wall of the clear water zone (13). The flow stabilizer (2) is inclinedly arranged in the oil-water separation zone (12). The oil pumping device (3) and the oil monitoring element (61) are respectively arranged in the upper part of the oil-water separation zone (12). A ventilated part (18) is provided on the top of the working box (1) located in the clear water area (13). Kitchen waste liquid flows into the oil-water separation zone (12) through the liquid inlet (14) and is separated into layers by its own density difference. The flow stabilizer (2) is used to buffer the kitchen waste liquid in the oil-water separation zone (12) and guide the oil bubbles floating in the kitchen waste liquid to the upper part of the oil-water separation zone (12) to form an oil collection layer (121). The water in the kitchen waste liquid sinks to the lower part of the oil-water separation zone (12) and is collected in the clear water zone (13). It overflows outward through the drain (15). The bottom of the drain (15) is higher than or equal to the inner top surface of the working box (1) in the oil-water separation zone (12). The oil monitoring element (61) is used to monitor the thickness of the oil collection layer (121) and send an electrical signal to the control module (63). The control module (63) controls the oil pumping device (3) connected to the oil collection layer (121) to pump the oil out of the oil collection layer (121) for collection.

2. The oil-water separation device according to claim 1, characterized in that, A buffer distribution pipe (7) is provided in the oil-water separation zone (12), and the buffer distribution pipe (7) is connected to the liquid inlet section (14); The buffer distribution pipe (7) is provided with a first drain window (71) on both the front and rear sides, and a second drain window (72) is provided at the bottom of the buffer distribution pipe (7). The oil-water mixture flows into the buffer distribution pipe (7) through the liquid inlet (14), and the buffered oil-water mixture flows directionally into the oil-water separation zone (12) through the first drain window (71) and the second drain window (72). The flow stabilizer plate (2) is positioned vertically opposite to the second drain window (72), and the flow stabilizer plate (2) further buffers the kitchen waste liquid flowing into the oil-water separation zone (12).

3. The oil-water separation device according to claim 2, characterized in that, The buffer distribution pipe (7) is provided with a first heating pipe (75), and the oil-water separation zone (12) is provided with a second heating pipe (122). The second heating pipe (122) is located below the flow stabilizer plate (2). The first heating pipe (75) and the second heating pipe (122) are electrically connected to the control module (63) respectively. The working temperature of the first heating pipe (75) and the second heating pipe (122) is adjusted by the control module (63). The buffer distribution pipe (7) is provided with a buffer zone (73) and a drainage zone (74). The buffer zone (73) is connected to the liquid inlet (14). The first drainage window (71) and the second drainage window (72) are respectively connected to the drainage zone (74).

4. The oil-water separation device according to claim 2, characterized in that, The top surface of the working box (1) is provided with a partition plate (16). One side of the partition plate (16) in the width direction is fixedly connected to one inner wall of the working box (1), and the other side is provided with a gap between it and the inner wall of the working box (1) to form a flow channel. The flow channel allows the oil collection layer (121) located above the oil-water separation zone (12) to circulate. One end of the buffer distribution pipe (7) is fixedly connected to the side of the working box (1), and the other end is fixedly connected to the partition plate (16). The bottom of the partition plate (16) is lower than the bottom of the buffer distribution tube (7), and the width of the partition plate (16) is greater than the width of the buffer distribution tube (7).

5. The oil-water separation device according to claim 1, characterized in that, Several flow stabilizers (2) are arranged in two layers from top to bottom. The upper layer is provided with a horizontal flow stabilizer (2) for diverting and buffering the kitchen waste liquid flowing into the oil-water separation zone (12). The lower layer is provided with two flow stabilizers (2). The two flow stabilizers (2) are arranged at intervals with the upper flow stabilizer (2) as the center to further buffer the kitchen waste liquid, and they are respectively inclined towards the oil extraction port of the oil extraction device (3).

6. The oil-water separation device according to claim 1, characterized in that, The lower section of the side wall of the clear water area (13) is provided with a sewage outlet (17), and a normally closed sewage valve (171) is provided at the sewage outlet (17). The sewage valve (171) is airtightly connected to a sewage pipe (172). The drain outlet (15) is airtightly connected to a drain pipe (151). The water outlet end of the drain pipe (151) is connected to the outer periphery of the sewage pipe (172). A normally open overflow valve (152) is provided on the drain pipe (151).

7. The oil-water separation device according to claim 1, characterized in that, The oil extraction device (3) includes an oil drain pipe (31) and an oil pump (32). The oil inlet end of the oil drain pipe (31) passes through the working box (1) and is located in the oil-water separation zone (12), and its oil outlet end is located outside the working box (1). The oil pump (32) is fixedly installed on the oil drain pipe (31). The oil inlet of the drain pipe (31) is positioned at a height higher than the bottom of the oil monitoring element (61).

8. The oil-water separation device according to claim 7, characterized in that, The working box (1) is also equipped with a water replenishment device (4). The water replenishment device (4) includes a water replenishment pipe (41) and an electromagnetic valve (42). The water outlet of the water replenishment pipe (41) is located in the oil-water separation zone (12). The water inlet of the water replenishment pipe (41) is located outside the working box (1) for connecting to an external water supply device. The electromagnetic valve (42) is fixedly installed on the water replenishment pipe (41).

9. The oil-water separation device according to claim 1, characterized in that, The working box (1) is also equipped with a water circulation device (5). The water circulation device (5) includes a first circulation pipe (51), a second circulation pipe (52) and a water circulation pump (53). The water inlet of the first circulation pipe (51) is located in the clear water area (13). The water circulation pump (53) is fixedly located outside the working box (1). The water outlet of the first circulation pipe (51) is airtightly connected to the water inlet of the water circulation pump (53). The water inlet of the second circulation pipe (52) is airtightly connected to the water outlet of the water circulation pump (53). The water outlet of the second circulation pipe (52) is airtightly connected to the outer side of the liquid inlet (14). The second circulation pipe (52) is connected to the liquid inlet (14).

10. The oil-water separation device according to claim 8, characterized in that, The control device (6) further includes a water level monitoring element (62), and the centralized control module (63) includes a display screen (631) and a communication centralized control element (632), wherein the display screen (631) and the communication centralized control element (632) are electrically connected; The water level monitoring element (62) is fixedly installed on the working box (1), and its monitoring end passes through the top of the working box (1) and is located in the clear water area (13). The water level monitoring element (62) is used to monitor the water level height in the clear water area (13). The bottom end of the water level monitoring element (62) is lower than the bottom end of the drain outlet (15). The oil monitoring element (61) and the oil pump (32) are electrically connected to the communication control element (632). The oil monitoring element (61) monitors the height change of the oil collection layer (121) and sends an electrical signal to the communication control element (632). After processing by the communication control element (632), the oil pump (32) is controlled to work / stop. The water level monitoring element (62) and the solenoid valve (42) are electrically connected to the communication control element (632). The water level monitoring element (62) monitors the water level in the clear water zone (13) and sends an electrical signal to the communication control element (632). After processing by the communication control element (632), an electrical signal is sent to the solenoid valve (42). When the solenoid valve (42) is opened, external clear water enters the oil-water separation zone (12) through the water supply pipe (41).

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