A cyclone pre-separation structure of a coalescing oil remover

Abstract

The utility model relates to the technical field of coalescence oil remover, especially to a coalescence oil remover cyclone preseparation structure, including preseparation subassembly and the collection subassembly of setting in the bottom of preseparation subassembly, preseparation subassembly includes centrifugal cylinder, and the top of centrifugal cylinder sets up the top cap, and the top cap top sets up motor, and motor electric connection shaft, and the shaft is from the top cap center and extends to the inner chamber of centrifugal cylinder and penetrates, and the bottom end of the shaft sets up centrifugal head, this preseparation structure through the synergic design of cyclone preseparation, centrifugal strengthening and anti -backmixing collection has realized the efficient separation of oil and water.

Description

Technical Field

[0001] This utility model relates to the field of coalescing oil separator technology, and in particular to a cyclone pre-separation structure for a coalescing oil separator. Background Technology

[0002] The cyclone pre-separation structure is located in the inlet area of ​​the coalescing oil separator. It is responsible for the preliminary separation of oily wastewater, quickly removing large oil droplets, silt and other impurities, and reducing the load on downstream coalescing packing or filter elements.

[0003] The centrifugal force field generated by swirling flow is typically used to accelerate the stratification of oil droplets and water. The principle is that the oil phase density is usually less than that of the water phase. In the centrifugal force field, the denser water phase is subjected to a stronger centrifugal force and is thrown to the outside, while the less dense oil phase gathers towards the center, forming stratification. Existing swirling pre-separation structures usually directly input oily wastewater into the centrifugal force field at a high flow rate, which prevents the oily wastewater from fully contacting the separation head. As a result, the water and oil phases cannot be effectively separated, leading to poor separation efficiency. Furthermore, during the water and oil phase collection stage, the collection device cannot effectively distinguish between the water and oil phases, causing partial mixing of the separated water and oil phases. This results in a decrease in the purity of the separated phase and increases the load on downstream coalescing packing or filter elements.

[0004] Therefore, this application provides a cyclone pre-separation structure for a coalescing oil separator to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to provide a cyclone pre-separation structure for a coalescing oil separator, which solves the problems of existing oily wastewater having a high flow rate, not being able to fully contact the separation head, having poor separation efficiency, and the collection device not being able to effectively distinguish between the collected water phase and oil phase during the collection stage, resulting in partial mixing of the separated water and oil phases.

[0006] To solve the above-mentioned technical problems, this utility model provides a cyclone pre-separation structure for a coalescing oil separator, including a pre-separation component and a collection component disposed at the bottom of the pre-separation component. The pre-separation component includes a centrifuge cylinder, a top cover is provided on the top of the centrifuge cylinder, a motor is provided on the top of the top cover, the motor is electrically connected to a rotating shaft, the rotating shaft passes through the center of the top cover and extends into the inner cavity of the centrifuge cylinder, and a centrifuge head is provided at the bottom end of the rotating shaft.

[0007] A further improvement of the present invention is that the centrifuge head includes a horizontal baffle plate disposed at the bottom of the rotating shaft, and multiple main fan blades are evenly distributed between the upper surface of the baffle plate and the side wall of the rotating shaft. Each main fan blade is wavy, and auxiliary fan blades are disposed between adjacent main fan blades. A centrifugal gap is provided between the auxiliary fan blades and the main fan blades along the axial direction of the rotating shaft.

[0008] A further improvement of this utility model is that: the inner wall of the centrifuge tube is provided with multiple layers of swirling vanes, which form a spiral channel located above the centrifuge head.

[0009] A further improvement to the technical solution of this utility model is that an inlet communicating with the spiral channel is opened on the top cover.

[0010] A further improvement of the present invention is that the collection assembly includes an aqueous phase collection basin disposed below the centrifuge tube, and an oil phase collection basin is coaxially disposed within the inner cavity of the aqueous phase collection basin.

[0011] A further improvement of this utility model is that an outwardly extending baffle is provided at the edge of the oil phase collection basin, and the horizontal distance between the baffle and the water phase collection basin is 3-4 cm.

[0012] A further improvement of the present invention is that the inner cavities of both the aqueous phase collection basin and the oil phase collection basin are horizontally arranged with filter layers, and multiple filter holes are evenly opened on the filter layers.

[0013] A further improvement of this utility model is that: a water phase outlet is provided at the bottom of the water phase collection basin, and an oil phase outlet is provided at the bottom of the oil phase collection basin.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects:

[0015] 1. The present invention provides a cyclone pre-separation structure for a coalescing oil separator. The pre-separation component is provided with a spiral channel through a cyclone vane. The spiral channel extends the residence time of oily wastewater and slows down the flow rate of oily wastewater. In conjunction with the cyclone vane, the fluid is guided to flow in layers, so that the oily wastewater flows tangentially to the separation head through the spiral channel, avoiding vertical downward flow of oily wastewater and improving centrifugation efficiency.

[0016] 2. The present invention provides a cyclone pre-separation structure for a coalescing oil separator. The pre-separation component is equipped with a centrifugal head. The wave-shaped design of the main fan blade of the centrifugal head increases fluid disturbance, accelerates the collision and coalescence of oil and wastewater, and produces a coarsening effect. A centrifugal gap is set between the auxiliary fan blade and the main fan blade along the axial direction of the rotating shaft, so that the oil phase and water phase are not obstructed during the separation process and fly away directly, thereby strengthening oil-water separation, reducing energy loss, and improving separation efficiency.

[0017] 3. The cyclone pre-separation structure of the coalescing oil separator provided by this utility model, by setting the water phase collection basin and the oil phase collection basin coaxially nested, combined with the 3-4cm outer edge of the oil phase collection basin, effectively isolates the separated oil and water phases, prevents back mixing, and improves the purity of the oil phase. Specifically, because the water phase has a high density, the water phase with a higher density will be subjected to a stronger centrifugal force under the action of centrifugal force and will be thrown towards the inner wall of the centrifuge tube. The water phase flows from the side wall to the water phase collection basin, while the oil phase with a lower density gathers in the central area or forms a continuous oil core that falls from the separation head to the oil phase collection basin. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a cyclone pre-separation structure for a coalescing oil separator.

[0020] Figure 2 This is a schematic diagram of the internal structure of a cyclone pre-separation structure for a coalescing oil separator.

[0021] Figure 3 This is a schematic diagram of the centrifuge head of this utility model;

[0022] Figure 4 This is a cross-sectional view of the collecting component of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the collecting component of this utility model.

[0024] Reference numerals: 1. Pre-separation assembly; 11. Centrifuge cylinder; 12. Top cover; 13. Motor; 14. Shaft; 15. Centrifuge head; 151. Baffle plate; 152. Main fan blade; 153. Auxiliary fan blade; 17. Swirl vane; 18. Spiral channel; 16. Inlet; 2. Collection assembly; 21. Aqueous phase collection basin; 22. Oil phase collection basin; 23. Side guard; 24. Filter layer; 25. Filter holes; 26. Aqueous phase outlet; 27. Oil phase outlet. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The present invention will be further explained below with reference to specific embodiments.

[0029] like Figures 1-5 As shown, this embodiment provides a cyclone pre-separation structure for a coalescing oil separator, including a pre-separation component 1 and a collection component 2 disposed at the bottom of the pre-separation component 1. The pre-separation component 1 includes a centrifuge cylinder 11 made of corrosion-resistant material. Its top is sealed to a top cover 12 via a flange. A motor 13 is disposed on the top of the top cover 12, and the motor 13 is electrically connected to a rotating shaft 14. The rotating shaft 14 passes through the center of the top cover 12 and extends into the inner cavity of the centrifuge cylinder 11. A centrifuge head 15 is disposed at the bottom end of the rotating shaft 14. The centrifuge head 15 includes a horizontal baffle 151 disposed at the bottom end of the rotating shaft 14. The baffle 151 prevents oily wastewater from flowing vertically downward. Multiple main fan blades 152 are evenly distributed between the upper surface of 51 and the side wall of the rotating shaft 14. Each main fan blade 152 is wavy. Auxiliary fan blades 153 are arranged between adjacent main fan blades 152. A centrifugal gap along the axis of the rotating shaft 14 is set between the auxiliary fan blades 153 and the main fan blades 152. The wavy design of the main fan blades 152 of the centrifugal head 15 increases fluid disturbance, accelerates the collision and aggregation of oil and water, and produces a coarsening effect. The centrifugal gap along the axis of the rotating shaft 14 is set between the auxiliary fan blades 153 and the main fan blades 152, so that the oil phase and water phase are not obstructed during the separation process and fly away directly, which enhances oil-water separation, reduces energy loss, and improves separation efficiency.

[0030] like Figure 2As shown, in this embodiment, the inner wall of the centrifuge cylinder 11 is provided with multiple layers of swirl vanes 17, which form a spiral channel 18 located above the centrifuge head 15. An inlet 16 communicating with the spiral channel 18 is opened on the top cover 12. The spiral channel 18 extends the residence time of oily wastewater, slows down the flow rate of oily wastewater, and, together with the swirl vanes 17, guides the fluid to flow in layers, so that the oily wastewater flows tangentially towards the separation head in the spiral channel 18, avoiding vertical downward flow of oily wastewater and improving centrifugation efficiency.

[0031] like Figures 4-5 As shown, in this embodiment, the collection component 2 includes an aqueous phase collection basin 21 disposed below the centrifuge cylinder 11. The diameter of the aqueous phase collection basin 21 is equal to the diameter of the centrifuge cylinder 11. An oil phase collection basin 22 is coaxially disposed within the inner cavity of the aqueous phase collection basin 21. An outwardly extending annular baffle 23 is provided at the edge of the oil phase collection basin 22. The horizontal distance between the baffle 23 and the aqueous phase collection basin 21 is 3-4 cm, forming a physical isolation zone. By setting the aqueous phase collection basin 21 and the oil phase collection basin 22 to be coaxially nested, combined with the 3-4 cm outwardly extending baffle 23 at the edge of the oil phase collection basin 22, the separated oil and water phases are effectively isolated, preventing back mixing and improving the purity of the oil phase. Specifically, because the aqueous phase has a high density, it will be subjected to a stronger centrifugal force under the action of centrifugal force and will be thrown towards the inner wall of the centrifuge cylinder 11. The aqueous phase flows from the side wall to the aqueous phase collection basin 21, while the oil phase, with its lower density, gathers in the central area or forms a continuous oil core that falls from the separation head to the oil phase collection basin 22.

[0032] like Figures 4-5 As shown, in this embodiment, the inner cavities of both the aqueous phase collection basin 21 and the oil phase collection basin 22 are horizontally provided with filter layers 24. Multiple filter holes 25 are uniformly opened on the filter layer 24, which covers the entire cross-section and has a uniformly distributed pore size. The filter layer 24 is used to intercept solid impurities such as mud and sand, and the collection component 2 is detachable for easy cleaning and maintenance. The bottom of the aqueous phase collection basin 21 is provided with an aqueous phase outlet 26, and the bottom of the oil phase collection basin 22 is provided with an oil phase outlet 27. Valves are provided at the outlets to control the discharge.

[0033] The working principle of the technical solution provided by this utility model is as follows:

[0034] The first stage is the cyclone pre-separation stage: the staff inputs the oily wastewater into the spiral channel 18 through the inlet 16 of the top cover 12. Under the guidance of the cyclone vane 17, the oily wastewater flows down along the spiral path. The spiral channel 18 prolongs the fluid residence time, reduces the flow rate, and avoids turbulence interference caused by vertical downward flow. This allows the oily wastewater to flow tangentially towards the centrifuge head 15 through the spiral channel 18, preventing the oily wastewater from flowing vertically downward and improving centrifugation efficiency.

[0035] The second stage is the centrifugal enhanced separation stage: the oily wastewater flows to the centrifuge head 15, the motor 13 drives the rotating shaft 14 to rotate at high speed, which drives the centrifuge head 15 to generate a strong centrifugal force field. The wave-shaped main fan blade 152 disturbs the fluid, causing the oil droplets to collide and coalesce (coarsening effect), increasing the oil droplet size. A centrifugal gap is set between the auxiliary fan blade 153 and the main fan blade 152 along the axial direction of the rotating shaft 14, so that the oil phase and water phase are not obstructed during the separation process and fly away directly. Under the action of centrifugal force, the water phase flows downward close to the inner wall of the centrifuge cylinder 11, while the oil phase gathers towards the center to form a continuous oil core, and finally detaches from the centrifuge head 15 and falls into the oil phase collection basin 22.

[0036] The third stage is oil-water collection and back-mixing prevention: the aqueous phase flows along the inner wall of the centrifuge cylinder 11 to the bottom and enters the aqueous phase collection basin 21. After the filter layer 24 intercepts residual impurities, it is discharged from the aqueous phase outlet 26; the oil core falls into the oil phase collection basin 22. The coaxial nested collection basins are combined with the baffle 23 for isolation, preventing the separated oil and water from mixing again due to flow disturbance. The baffle 23 also prevents the oil phase from splashing into the aqueous phase area, ensuring the purity of the oil phase. After passing through the filter layer 24, the oil phase is discharged from the oil phase outlet 27.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cyclone pre-separation structure for a coalescing oil separator, characterized in that, The pre-separation component (1) includes a pre-separation component (1) and a collection component (2) disposed at the bottom of the pre-separation component (1). The pre-separation component (1) includes a centrifuge cylinder (11), a top cover (12) is disposed on the top of the centrifuge cylinder (11), a motor (13) is disposed on the top of the top cover (12), the motor (13) is electrically connected to a rotating shaft (14), the rotating shaft (14) passes through the center of the top cover (12) and extends into the inner cavity of the centrifuge cylinder (11), and a centrifuge head (15) is disposed at the bottom end of the rotating shaft (14).

2. The cyclone pre-separation structure for a coalescing oil separator according to claim 1, characterized in that, The centrifuge head (15) includes a horizontal baffle (151) set at the bottom of the rotating shaft (14). Multiple main fan blades (152) are evenly arranged between the upper surface of the baffle (151) and the side wall of the rotating shaft (14). Each main fan blade (152) is wavy. Auxiliary fan blades (153) are set between adjacent main fan blades (152). A centrifugal gap along the axial direction of the rotating shaft (14) is set between the auxiliary fan blades (153) and the main fan blades (152).

3. The cyclone pre-separation structure for a coalescing oil separator according to claim 1, characterized in that, The inner wall of the centrifuge tube (11) is provided with multiple layers of swirling vanes (17), which form a spiral channel (18) located above the centrifuge head (15).

4. The cyclone pre-separation structure for a coalescing oil separator according to claim 3, characterized in that, An inlet (16) is provided on the top cover (12) to communicate with the spiral channel (18).

5. The cyclone pre-separation structure for a coalescing oil separator according to claim 1, characterized in that, The collection assembly (2) includes an aqueous phase collection basin (21) disposed below the centrifuge tube (11), and an oil phase collection basin (22) is coaxially disposed inside the aqueous phase collection basin (21).

6. The cyclone pre-separation structure for a coalescing oil separator according to claim 5, characterized in that, An outwardly extending baffle (23) is provided at the edge of the oil phase collection basin (22), and the horizontal distance between the baffle (23) and the water phase collection basin (21) is 3-4 cm.

7. The cyclone pre-separation structure for a coalescing oil separator according to claim 5, characterized in that, The inner cavities of the aqueous phase collection basin (21) and the oil phase collection basin (22) are both horizontally equipped with filter layers (24), and multiple filter holes (25) are evenly opened on the filter layers (24).

8. The cyclone pre-separation structure for a coalescing oil separator according to claim 5, characterized in that, A water phase outlet (26) is provided at the bottom of the water phase collection basin (21), and an oil phase outlet (27) is provided at the bottom of the oil phase collection basin (22).

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