Oil-water separation device for water treatment

Abstract

The invention discloses an oil-water separation device for water treatment, which comprises a separation tank, a water inlet pipe is arranged at the bottom of the separation tank, a drainage pipe is arranged on the other side of the bottom of the separation tank, a separation plate is vertically and slidably connected in the separation tank, and the density of the separation plate is smaller than that of water and larger than that of oil. The upper surface of the partition plate is covered with an oil absorption felt, and the oil absorption felt extends to the position below the partition plate through an oil discharge hole; an oil stain collecting mechanism is arranged on the partition plate and is used for collecting oil stains and discharging the oil stains out of the separation tank. The partition plate is located above the water inlet pipe, oil-water mixed sewage is introduced into the partition plate, naturally floating oil stains and oil stain particles mixed in the sewage can be attracted to the position above the partition plate through the oil discharge holes under the action of the oil absorption felt, the partition plate can float between the sewage and the oil stains to complete separation, and then the oil stains are collected and discharged through the oil stain collecting mechanism; the floating partition plate can adapt to the amount of sewage currently discharged into the separation tank.

Description

Technical Field

[0001] The present application belongs to the field of sewage treatment, and in particular relates to an oil-water separation device for water treatment. Background Art

[0002] In the process of sewage treatment, especially in the process of urban domestic sewage treatment, it is necessary to pre-separate the sewage to separate the mixed oily liquid, so as to facilitate the subsequent sedimentation, flocculation and other operations, and avoid a large amount of oil pollution affecting the sewage treatment equipment, such as oil pollution blocking the medicine spray nozzle, oil pollution accumulation blocking the drain outlet, etc.

[0003] Existing oil-water separation devices, such as an oil-water separation device and oil-water separation method with application number CN202111190807.2, use a filtration system to separate oil and water. This method is only suitable for dewatering operations of fuels such as aviation kerosene, and is not applicable to only a small amount of oil pollution contained in sewage. Some are based on the principle that oil is lighter than water, and use a sedimentation tank to make the oil pollution automatically float to the surface for cleaning. Although it is suitable for treating a large amount of sewage, it requires a larger sewage tank, which leads to a significant increase in the occupied land area, increased costs, and wasted land resources.

[0004] Therefore, a new type of oil-water separation device for water treatment is needed to solve the above problems. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present application provides an oil-water separation device for water treatment, which can quickly separate oil and water in sewage, has a small size and good separation effect.

[0006] The technical effects to be achieved by this application are achieved through the following solutions:

[0007] According to the first aspect of the present application, there is provided an oil-water separation device for water treatment, comprising a separation tank, wherein a water inlet pipe is arranged at the bottom of the separation tank, a drain pipe is arranged at the other side of the bottom of the separation tank, a partition plate is vertically slidably connected in the separation tank, the density of the partition plate is less than that of water and greater than that of oil, the upper surface of the partition plate is covered with oil absorbent felt, and the oil absorbent felt extends to the bottom of the partition plate through an oil drain hole; an oil collection mechanism is arranged on the partition plate for collecting oil and discharging it from the separation tank.

[0008] Through this solution, the partition plate is located above the water inlet pipe, and oil-water mixed sewage is passed into it. The naturally floating oil and oil particles mixed in the sewage will be attracted to the top of the partition plate through the oil discharge hole under the action of the oil absorption felt. The partition plate will float between the sewage and the oil to complete the separation, and then be collected and discharged through the oil collection mechanism; the floating partition plate can adapt to the current amount of sewage discharged into the separation tank, ensuring that the oil is always isolated and collected above the partition plate, and the sewage at the bottom of the partition plate will not be collected.

[0009] Preferably, the separation tank includes a separation chamber and an oil drain chamber, the separation chamber is conical, the oil drain chamber is arranged at the top of the separation chamber, the water inlet pipe is tangentially connected to the separation chamber, the drain pipe is connected to the bottom side of the separation chamber, and the partition plate is slidably connected to the oil drain chamber.

[0010] Through this solution, the introduced sewage will form a vortex shape. Since the water has a higher density, the oil will be squeezed to the center due to the centrifugal force during the rotation; the conical separation tank can gather the oil gathered in the center due to the higher density of water upwards, making it more convenient to collect the oil; the drainage pipe located on the outer periphery of the bottom can discharge the separated sewage without discharging the oil.

[0011] Preferably, the bottom surface of the partition plate is in a cone shape with a center convex downward, and the oil drain hole is arranged at the center of the partition plate.

[0012] Through this solution, the conical partition plate fits the vortex-shaped water surface shape better, making it easier to collect and adsorb the oil in the center depression.

[0013] Preferably, an aeration pipe is provided at the bottom of the separation chamber, and the aeration pipe discharges bubbles into the separation chamber.

[0014] Through this solution, the bubbles introduced into the separation chamber can stir the oil-water mixed sewage, entrain the oil particles to float upward and gather toward the middle, thereby improving the efficiency of oil-water separation.

[0015] Preferably, the oil collection mechanism includes an oil scraping mechanism and an oil suction mechanism, wherein the oil scraping mechanism is used to squeeze the oil on the oil absorption felt into the oil storage tank around the partition plate; the oil suction mechanism is used to discharge the oil in the oil storage tank into the oil discharge cavity.

[0016] According to the present solution, the oil storage tank is arranged around the partition plate and is formed by the depression of the partition plate, so as to temporarily store the oil stains; the oil suction mechanism discharges the oil stains in the oil storage tank in time to avoid accumulation.

[0017] Preferably, the oil scraper mechanism includes an oil scraper motor, a telescopic drive rod and an oil scraper impeller, the oil scraper impeller is rotatably connected to the center of the partition plate, the oil scraper impeller is connected to the oil scraper motor through the telescopic drive rod, and the oil scraper motor is fixed to the top of the separation tank.

[0018] Through this solution, the scraper impeller can rotate and squeeze the oil on the oil absorption felt, and squeeze the oil into the oil storage tank; the oil absorption felt is circulated and squeezed, and the liquid can play a pumping role, and the oil discharged in time makes the oil absorption felt continuously absorb the oil below under the siphon effect.

[0019] Preferably, a plurality of blades are evenly arranged on the periphery of the oil scraping impeller, and the blades are all arranged to be inclined away from the moving direction.

[0020] Through this solution, the orientation of the blades can guide the oil stains toward the outer oil storage tank, thereby preventing the oil stains from being unable to be discharged after being squeezed out and being reabsorbed by the oil-absorbing felt.

[0021] Preferably, the telescopic driving rod comprises a driving sleeve and a driving rod, the driving rod is connected to the oil scraper motor via a coupling, the driving sleeve is slidably connected to the driving rod and the angle is fixed, and the driving sleeve is fixed to the center of the oil scraper impeller.

[0022] Through this solution, the telescopic driving rod can ensure that the oil scraping impeller is always driven when the partition plate floats up and down, thereby improving flexibility during use.

[0023] Preferably, the oil suction mechanism comprises an oil suction pump and an oil suction pipeline, a part of the oil suction pipeline is a hose, and the hose extends downward into the oil storage tank; the oil suction pump is fixed to the top of the separation tank.

[0024] Through this solution, the hose can be coiled into the oil storage tank and adapt to partitions of different heights. The up and down floating will not affect the operation of the oil suction pipeline, thereby improving flexibility and reliability.

[0025] Preferably, sliding grooves are arranged around the partition plate, and the inner wall of the oil drain cavity is provided with sliding rails matching the sliding grooves.

[0026] Through this solution, the slide rail and the slide groove cooperate with each other, which can improve the stability during use, prevent the partition plate from rotating with the rotation of the oil scraping impeller, and ensure the smooth progress of the oil scraping operation.

[0027] According to one embodiment of the present application, the effect of using the oil-water separation device for water treatment is that the oil-water separation and discharge can be completed by directly passing the oil-water mixed sewage into it, which can improve the oil-water separation efficiency. In addition, it is small in size, easy to use, and has a better separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the existing technical solutions, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 This is a structural schematic diagram of an oil-water separation device for water treatment in one embodiment of the present application;

[0030] Figure 2 for Figure 1 A schematic cross-sectional view of an oil-water separation device for reclaimed water treatment;

[0031] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the middle partition plate;

[0032] Figure 4 for Figure 3 Structural schematic diagram of the middle support frame;

[0033] Figure 5 for Figure 2 A schematic diagram of the top view of the structure of the middle partition plate;

[0034] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure of the middle oil drain chamber;

[0035] Figure 7 for Figure 2 A schematic diagram of the structure of the middle telescopic driving rod;

[0036] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of the telescopic drive rod. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0038] like Figures 1 to 8As shown, an oil-water separation device for water treatment in an embodiment of the present application includes a separation tank 100, a water inlet pipe 110 is arranged at the bottom of the separation tank 100, a drain pipe 120 is arranged on the other side of the bottom of the separation tank 100, a partition plate 200 is vertically slidably connected in the separation tank 100, the density of the partition plate 200 is less than that of water and greater than that of oil, the upper surface of the partition plate 200 is covered with an oil absorption felt 210, and the oil absorption felt 210 extends to the bottom of the partition plate 200 through an oil discharge hole; an oil pollution collection mechanism is arranged on the partition plate 200, which is used to collect oil pollution and discharge it out of the separation tank 100.

[0039] The oil-absorbing felt 210 is made of materials such as polypropylene fiber felt, polyurethane foam, polystyrene fiber, polypropylene melt-blown fiber or non-woven fabric, and has oleophilic and hydrophobic properties. It can use the siphon effect to absorb grease to the oil-absorbing felt 210 above the partition plate 200, while the sewage is retained under the partition plate 200 for easy discharge.

[0040] The oil-absorbing felt 210 is fixed to the partition plate 200 by gluing or snapping.

[0041] Through the scheme of this embodiment, the partition plate 200 is located above the water inlet pipe 110, and oil-water mixed sewage is introduced into it. The naturally floating oil and oil particles mixed in the sewage will be attracted to the top of the partition plate 200 through the oil discharge hole under the action of the oil absorption felt 210. The partition plate 200 will float between the sewage and the oil to complete the separation, and then the oil collection mechanism will collect and discharge it; the floating partition plate 200 can adapt to the current amount of sewage discharged into the separation tank 100, ensuring that the oil is always isolated and collected above the partition plate 200, and the sewage at the bottom of the partition plate 200 will not be collected.

[0042] The water inlet pipe 110 is connected to a water pump, and the drain pipe 120 is connected to a ball valve. The ball valve can be opened after a certain period of time to complete the discharge, thereby avoiding direct discharge that affects the separation effect.

[0043] The partition plate is, for example, made of blow-molded plastic, and is filled with grease or a certain amount of water to ensure that it can float to the water surface and sink into the grease, thereby playing a good separation role.

[0044] In one embodiment of the present application, the separation tank 100 includes a separation chamber 102 and an oil drain chamber 101. The separation chamber 102 is conical, and the oil drain chamber 101 is arranged at the top of the separation chamber 102. The water inlet pipe 110 is tangentially connected to the separation chamber 102, and the drain pipe 120 is connected to the bottom side of the separation chamber 102. The partition plate 200 is slidably connected to the oil drain chamber 101. The sewage introduced will form a vortex shape. Since the water has a higher density, the oil will be squeezed to the center due to the centrifugal force during the rotation process;

[0045] The conical separation tank 100 can gather the oil pollution gathered in the center due to the greater density of water upwards, making it more convenient to collect the oil pollution; the drainage pipe 120 located on the outer periphery of the bottom can discharge the separated sewage without discharging the oil pollution.

[0046] In one embodiment of the present application, the bottom surface of the partition plate 200 is a cone with a downward protrusion in the center, and the oil drain hole is arranged in the center of the partition plate 200. The cone-shaped partition plate 200 is more in line with the vortex-shaped water surface shape, and is convenient for collecting and adsorbing the oil concave in the center.

[0047] The oil-absorbing felt 210 can extend downward from the oil discharge hole into the separation chamber 102 and can extend below the central liquid surface in the sewage vortex, thereby ensuring the absorption of oil and improving reliability.

[0048] In one embodiment of the present application, an aeration pipe 130 is provided at the bottom of the separation chamber 102, and the aeration pipe 130 discharges bubbles into the separation chamber 102. The bubbles introduced into the separation chamber 102 can stir the oil-water mixed sewage, entrain the oil particles to float upward and gather in the middle, thereby improving the efficiency of oil-water separation.

[0049] In one embodiment of the present application, the oil collection mechanism includes an oil scraping mechanism 310 and an oil suction mechanism 320. The oil scraping mechanism 310 is used to squeeze the oil on the oil absorption felt 210 into the oil storage tank 220 around the partition plate 200; the oil suction mechanism 320 is used to discharge the oil in the oil storage tank 220 into the oil discharge cavity 101. The oil storage tank 220 is arranged around the partition plate 200, formed by the depression of the partition plate 200, and can temporarily store the oil; the oil suction mechanism 320 discharges the oil in the oil storage tank 220 in time to avoid accumulation.

[0050] In one embodiment of the present application, the scraper mechanism 310 includes a scraper motor 311, a telescopic drive rod 312, and a scraper impeller 313. The scraper impeller 313 is rotatably connected to the center of the partition plate 200. The scraper impeller 313 is connected to the scraper motor 311 through the telescopic drive rod 312. The scraper motor 311 is fixed to the top of the separation tank 100. The scraper impeller 313 can rotate to squeeze the oil on the oil absorption felt 210 and squeeze the oil into the oil storage tank 220; the oil absorption felt 210 is circulated and squeezed, and the liquid can play a pumping role. The timely discharged oil makes the oil absorption felt 210 continuously absorb the oil below under the siphon effect.

[0051] A support frame 230 is provided on the top of the partition plate 200, and a plurality of legs 231 are provided around the support frame 230. The legs 231 extend downward to penetrate the oil-absorbing felt 210 and are fixed to the partition plate 200. The oil scraper impeller 313 is rotatably connected to the support frame 230 to avoid direct contact with the oil-absorbing felt 210 and rolling it up.

[0052] In one embodiment of the present application, a plurality of blades 3131 are evenly arranged on the periphery of the scraper impeller 313, and the blades 3131 are all arranged in an inclined manner away from the moving direction. The orientation of the blades 3131 can guide the oil stains toward the outer oil storage tank 220, so as to avoid the oil stains being reabsorbed by the oil absorption felt 210 after being squeezed out and unable to be discharged.

[0053] The oil storage tank 220 is formed by the depressions around the partition plate 200. The height of the oil absorption felt 210 is greater than the side wall of the oil storage tank 220, so that the oil can flow directly into the oil storage tank 220 under the squeezing of the blades 3131 and be discharged in time through the oil absorption mechanism 320 to avoid repeated suction into the oil absorption felt 210.

[0054] In one embodiment of the present application, the telescopic driving rod 312 includes a driving sleeve 3121 and a driving rod 3122. The driving rod 3122 is connected to the oil scraping motor 311 through a coupling. The driving sleeve 3121 is slidably connected to the driving rod 3122 and the angle is fixed. The driving sleeve 3121 is fixed to the center of the oil scraping impeller 313. The telescopic driving rod 312 can ensure that the oil scraping impeller 313 is always driven when the partition plate 200 floats up and down, thereby improving the flexibility during use.

[0055] The outer periphery of the driving rod 3122 is provided with a spline, and the inner wall of the driving sleeve 3121 is provided with a spline groove to ensure the driving connection between the driving rod 3122 and the driving sleeve 3121, and the driving sleeve 3121 can move up and down at any time to adapt to the vertical displacement of the partition plate 200.

[0056] A support net 140 is also provided in the separation tank 100 for supporting the telescopic driving rod 312 to reduce vibration during its rotation and improve reliability.

[0057] In one embodiment of the present application, the oil suction mechanism 320 includes an oil suction pump 321 and an oil suction pipeline 322. A portion of the oil suction pipeline 322 is a hose 3221, and the hose 3221 extends downward into the oil storage tank 220. The oil suction pump 321 is fixed to the top of the separation tank 100. The hose 3221 can be coiled into the oil storage tank 220 and adapt to partition plates 200 of different heights. The up and down floating will not affect the operation of the oil suction pipeline 322, thereby improving flexibility and reliability.

[0058] A lead block can be fixed at the end of the hose 3221 of the oil suction pipeline 322 to ensure that it always sinks to the bottom of the oil storage tank 220 to complete the oil suction task; the end of the hose 3221 can also be directly fixed to the bottom of the oil storage tank 220 to further improve reliability, and the length of the hose 3221 coiled into the oil storage tank 220 is greater than the vertical movement stroke of the partition plate 200.

[0059] In one embodiment of the present application, the partition plate 200 is provided with sliding grooves 240 around it, and the inner wall of the oil drain chamber 101 is provided with a slide rail 103 matching the sliding groove 240. The slide rail 103 cooperates with the sliding groove 240 to improve the stability during use, prevent the partition plate 200 from rotating with the rotation of the oil scraping impeller 313, and ensure the smooth progress of the oil scraping operation.

[0060] According to this embodiment, the effect of using the oil-water separation device for water treatment is that the oil-water separation and discharge can be completed by directly passing the oil-water mixed sewage into it, which can improve the oil-water separation efficiency. In addition, it is small in size, easy to use, and has a better separation effect.

[0061] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0064] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0065] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0066] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oil-water separation device for water treatment, comprising a separation tank, a water inlet pipe is arranged at the bottom of the separation tank, and a drain pipe is arranged on the other side of the bottom of the separation tank, characterized in that: A partition plate is vertically slidably connected in the separation tank, the density of the partition plate is less than that of water and greater than that of oil, the upper surface of the partition plate is covered with oil-absorbing felt, and the oil-absorbing felt extends to the bottom of the partition plate through an oil discharge hole; an oil collection mechanism is provided on the partition plate for collecting oil and discharging it from the separation tank.

2. The oil-water separation device for water treatment according to claim 1, characterized in that: The separation tank includes a separation chamber and an oil drain chamber, the separation chamber is conical, the oil drain chamber is arranged at the top of the separation chamber, the water inlet pipe is tangentially connected to the separation chamber, the drain pipe is connected to the bottom side of the separation chamber, and the partition plate is slidably connected to the oil drain chamber.

3. The oil-water separation device for water treatment according to claim 2, characterized in that: The bottom surface of the partition plate is in a cone shape with a center convex downward, and the oil drain hole is arranged at the center of the partition plate.

4. The oil-water separation device for water treatment according to claim 3, characterized in that: An aeration pipe is arranged at the bottom of the separation chamber, and the aeration pipe discharges air bubbles into the separation chamber.

5. The oil-water separation device for water treatment according to claim 3, characterized in that: The oil collection mechanism includes an oil scraping mechanism and an oil suction mechanism. The oil scraping mechanism is used to squeeze the oil on the oil absorption felt into the oil storage tank around the partition plate; the oil suction mechanism is used to discharge the oil in the oil storage tank into the oil discharge cavity.

6. The oil-water separation device for water treatment according to claim 5, characterized in that: The oil scraping mechanism includes an oil scraping motor, a telescopic driving rod and an oil scraping impeller, wherein the oil scraping impeller is rotatably connected to the center of the partition plate, the oil scraping impeller is connected to the oil scraping motor through the telescopic driving rod, and the oil scraping motor is fixed to the top of the separation tank.

7. The oil-water separation device for water treatment according to claim 6, characterized in that: A plurality of blades are evenly arranged on the outer circumference of the oil scraping impeller, and the blades are all arranged in an inclined manner away from the moving direction.

8. The oil-water separation device for water treatment according to claim 6, characterized in that: The telescopic driving rod comprises a driving sleeve and a driving rod, wherein the driving rod is connected to the oil scraping motor via a coupling, the driving sleeve is slidably connected to the driving rod and has a fixed angle, and the driving sleeve is fixed to the center of the oil scraping impeller.

9. The oil-water separation device for water treatment according to claim 5, characterized in that: The oil suction mechanism comprises an oil suction pump and an oil suction pipeline, a part of the oil suction pipeline is a hose, and the hose extends downward into the oil storage tank; the oil suction pump is fixed to the top of the separation tank.

10. The oil-water separation device for water treatment according to claim 2, characterized in that: The partition plate is provided with sliding grooves around its periphery, and the inner wall of the oil drain cavity is provided with sliding rails matching the sliding grooves.

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