Equipment for recovering oil in oil-containing wastewater

Abstract

The utility model relates to the technical field of wastewater recovery, and discloses oil recovery equipment for oily wastewater, which comprises a shell, an isolation block is arranged in the shell and divides the interior of the shell into a separation area and an oil collection area, the outer wall of the shell is fixedly connected with a driving motor, and the output end of the driving motor is connected with a rotating column. The outer wall of the rotating column is rotationally connected to the inner wall of the shell, a transmission assembly is arranged on the rotating column, a fixing block is arranged on the transmission assembly and used for driving the fixing block to move, an oil scraping block is arranged on the surface of the fixing block and arranged in the separation area, and the oil scraping block comprises a first half clamp and a second half clamp. The first half clamp and the second half clamp are clamped on the limiting protruding block in a matched mode, and the limiting protruding block is arranged on the fixing block. According to the utility model, the oil scraping block can be quickly disassembled in a clamping and fixing manner.

Description

Technical Field

[0001] This utility model relates to the field of wastewater recycling technology, and in particular to an oil recovery device for oily wastewater. Background Technology

[0002] Wastewater recycling refers to the process of treating used and polluted water through a series of technologies and processes to bring it up to certain water quality standards so that it can be reused. This recycled wastewater can be used for cooling and washing in industrial production, irrigation of urban greening, road spraying, and replenishment of groundwater, thereby realizing the recycling of water resources and reducing dependence on fresh water resources. Among these, the recycling of oily wastewater accounts for a relatively high proportion and is quite common.

[0003] Existing methods for recycling oily wastewater utilize the density difference between oil and water, causing oil to float on the surface and water to sink to the bottom. After entering a sedimentation tank or oil separator, the flow rate of the oily wastewater decreases, and oil droplets gradually rise to the surface and are collected by a scraper. The water then flows out from the bottom to enter subsequent treatment stages. This method is effective in removing floating oil. However, the scraper is often fixed by welding, which makes the replacement process cumbersome, time-consuming, and difficult to maintain regularly. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an oil recovery device for oily wastewater, which aims to improve the problems of cumbersome oil scraper replacement steps, long time consumption, and difficulty in regular maintenance caused by the oil scraper being fixed by welding.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An oil recovery device for oily wastewater includes a housing with an internal isolation block dividing the interior into a separation zone and an oil collection zone. A drive motor is fixedly connected to the outer wall of the housing, and a rotating column is connected to the output end of the drive motor. The outer wall of the rotating column is rotatably connected to the inner wall of the housing. A transmission assembly is mounted on the rotating column, and a fixed block is mounted on the transmission assembly to drive the fixed block to move. An oil scraper is mounted on the surface of the fixed block and is located within the separation zone. The oil scraper includes a first half-clamp and a second half-clamp, which are clamped together on a limiting protrusion located on the fixed block.

[0007] Furthermore, the transmission assembly includes four transmission sprockets and driven columns. The four transmission sprockets are fixed in pairs on the rotating column and the driven column. Each of the two sets of transmission sprockets on the rotating column and the driven column is provided with a transmission chain. The fixing block is fixedly connected to the outer wall of the two transmission chains.

[0008] Furthermore, both the first and second half-clamps are provided with dovetail grooves, one end of which is open and the other end is sealed. The first and second half-clamps are connected and fixed by hand-tightened long bolts.

[0009] Furthermore, cleaning blocks are installed on the inner wall of the separation zone, which is away from the isolation block.

[0010] Furthermore, the cleaning block is placed inside the positioning frame, which includes two parallel and vertically arranged side frames. The top of the side frames is provided with a cover, and slots are provided on the inner sidewalls of the side frames. The two sides of the cleaning block are inserted into the slots of the side frames for fixation, and the side frames are fixedly connected to the inner wall of the separation area.

[0011] Furthermore, a reinforcing plate is provided on the back of the cleaning block.

[0012] Furthermore, quick-release latches are provided between the two sections of the top cover and the side frame.

[0013] Furthermore, the top surface of the isolation block is provided with a flow-avoiding ramp.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the oil scraper is designed as two separate parts, and then the mutually cooperating clamping limiting protrusions are used to fix and connect it to the fixing block. This structure only requires a hand-tightening long bolt to complete the fixing and disassembly. The structure is simple and easy for a single person to disassemble and install.

[0016] 2. In this utility model, the isolation block enables the formation of an oil-water separation space within the separation zone, and the oil scraper can quickly push the oil into the oil collection zone, thereby improving the separation efficiency.

[0017] 3. In this utility model, the use of a chain drive assembly enables the fixed block to reciprocate, and during oil scraping, it maintains horizontal movement, minimizing disturbance to the wastewater. Furthermore, it can move the fixed block upwards, allowing the oil scraper to be positioned upwards for replacement or maintenance, making operation more convenient. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the oil scraper and drive mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the oil scraper and the fixed fast-explosion structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cleaning component structure of this utility model;

[0022] Figure 5 This utility model Figure 4 A schematic diagram of the explosion structure. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figures 1-3 This utility model provides an embodiment of an oil recovery device for oily wastewater, comprising a housing 2, an isolation block 3 inside the housing, the isolation block dividing the interior of the housing into a separation zone 4 and an oil collection zone 5, a drive motor 6 fixedly connected to the outer wall of the housing, a rotating column 7 connected to the output end of the drive motor, the outer wall of the rotating column being rotatably connected to the inner wall of the housing, a transmission assembly 8 on the rotating column, a fixed block 9 on the transmission assembly for driving the fixed block to move, an oil scraper 10 on the surface of the fixed block, the oil scraper being disposed in the separation zone, the oil scraper including a first half-clamp 11 and a second half-clamp 12, the first half-clamp and the second half-clamp being clamped together on a limiting protrusion 13, the limiting protrusion being disposed on the fixed block.

[0025] In operation, oily wastewater enters the separation zone through pipes. Due to the difference in oil and water density, the oil gradually rises while the wastewater sinks. The drive motor rotates the rotating column, which in turn moves the transmission assembly. The transmission assembly then moves the fixed block and the oil scraper along their defined paths. In this case, the oil scraper moves towards the oil collection area, pushing the surface oil into the collection area, thus achieving rapid oil collection and oil-water separation.

[0026] The aforementioned oil scraper block is fixed by clamping the first and second half-clamps onto the limiting protrusion. This clamping method is reliable and easy to operate. Specifically, both the first and second half-clamps are provided with dovetail grooves 17, one end of which is open and the other end is closed. The first and second half-clamps are connected and fixed by a hand-tightened long bolt 18. The cross-section of the limiting protrusion is the same as the size of the dovetail groove. During installation, the first and second half-clamps are pushed horizontally into the limiting protrusion from both ends, allowing the dovetail groove to slide onto the surface of the limiting protrusion. The dovetail groove and the limiting protrusion can limit movement in the X and Z axes. Because one end of the dovetail groove is closed, once the first and second half-clamps are in place and connected by the hand-tightened long bolt, they are also limited in the Y axis direction, thus achieving fixation. The operation is simple. The hand-tightened long bolt passes through the first half-clamp and is threaded into the second half-clamp. The hand-tightening protrusion of the long bolt abuts against the end face of the first half-clamp, forming an effective clamping force.

[0027] The aforementioned transmission assembly includes four transmission sprockets 14 and driven columns 15. The four transmission sprockets are fixed in pairs to the rotating and driven columns. Each pair of corresponding sets of transmission sprockets on the rotating and driven columns is equipped with a transmission chain 16. A fixing block is fixedly connected to the outer wall of the two transmission chains. The transmission chains are taut by the transmission sprockets, ensuring that the position of the oil scraper remains constant during rotation, preventing any shaking or other problems.

[0028] When the rotating column rotates, it drives two transmission chains via two transmission sprockets. These two transmission chains rotate synchronously, driving two transmission sprockets on the driven column. The transmission sprockets on the driven column can rotate synchronously with the driven column, in which case the driven column is shaft-connected to the outer casing; or they can rotate asynchronously, in which case the driven column is fixedly connected to the outer casing, and the transmission sprockets are connected to the driven column via bearings. This ensures smooth rotation of the transmission chains. After the drive motor drives the rotating shaft, the oil scraper moves along the direction of the transmission chain rotation. When the oil scraper is below, it moves towards the isolation block; when it is above, it moves away from the isolation block. This ensures that the oil scraper maintains the same direction during oil scraping, minimizing turbulence on the settled wastewater. Furthermore, its horizontal movement (the bottom of the transmission chain moves horizontally) ensures a consistent movement height, preventing fluctuations in the liquid level. An obstacle avoidance ramp is provided on the top surface of the isolation block. This ramp avoids the oil scraper at the end point of its horizontal movement. At this position, the oil scraper will flip over during its subsequent movement. The obstacle avoidance ramp works in conjunction with the oil scraper to collect the oil and discharge it into the oil collection area. When the oil scraper is below the drive chain, it is used for scraping oil. When the oil scraper is above the drive chain, it facilitates the replacement or maintenance of the oil scraper.

[0029] Reference Figure 4 and Figure 5As shown, a cleaning block 19 is provided on the inner wall of the separation zone away from the isolation block. After long-term use, the surface of the oil scraper will be covered with sludge. After the sludge accumulates, it will reduce the oil drainage effect and leave more sludge on the top of the isolation block. Therefore, during the cyclic rotation, the oil scraper comes into contact with the cleaning block to form a wiping effect, thereby trapping the sludge and ensuring the oil drainage effect.

[0030] Specifically, the cleaning block is placed inside the positioning frame 20 to ensure stable installation. The positioning frame includes two parallel and vertically arranged side frames 21, with a top cover 22 on the top of the side frames. Slots 23 are provided on the inner side walls of the side frames. The two sides of the cleaning block are inserted into the slots of the side frames for fixation. The side frames are fixedly connected to the inner wall of the separation area. After opening the top cover, the cleaning block is directly inserted into the slot, and then the top cover is closed to complete the installation, making the operation convenient. Furthermore, replacement is extremely convenient, as quick-release latches 24 are provided between the two sections of the top cover and the side frames for easy removal and installation of the top cover.

[0031] During use, the cleaning block is made of relatively soft materials, such as scouring pads or cotton cloths. Therefore, a reinforcing plate is provided on the back of the cleaning block to bond and fix the cleaning block to the reinforcing plate, so that it will not shift as a whole when in contact with the oil scraper.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil recovery device for oily wastewater, characterized in that: The device includes an outer casing, within which an isolation block is provided, dividing the interior of the casing into a separation zone and an oil collection zone. A drive motor is fixedly connected to the outer wall of the casing, and the output end of the drive motor is connected to a rotating column. The outer wall of the rotating column is rotatably connected to the inner wall of the casing. A transmission assembly is provided on the rotating column, and a fixed block is provided on the transmission assembly for driving the fixed block to move. An oil scraper is provided on the surface of the fixed block, and the oil scraper is located within the separation zone. The oil scraper includes a first half-clamp and a second half-clamp, which cooperate to clamp onto a limiting protrusion, which is located on the fixed block.

2. The oil recovery equipment for oily wastewater according to claim 1, characterized in that: The transmission assembly includes four transmission sprockets and driven columns. The four transmission sprockets are fixed in pairs on the rotating column and the driven column. Each of the two sets of transmission sprockets on the rotating column and the driven column is provided with a transmission chain. The fixing block is fixedly connected to the outer wall of the two transmission chains.

3. The oil recovery equipment for oily wastewater according to claim 1, characterized in that: Both the first and second half-clamps are provided with dovetail grooves, one end of which is open and the other end is sealed. The first and second half-clamps are connected and fixed by hand-tightened long bolts.

4. The oil recovery equipment for oily wastewater according to claim 1, characterized in that: Cleaning blocks are installed on the inner wall of the separation zone, which is away from the isolation block.

5. The oil recovery equipment for oily wastewater according to claim 4, characterized in that: The cleaning block is placed inside the positioning frame, which includes two parallel and vertically arranged side frames. The top of the side frames is provided with a cover, and the inner side wall of the side frames is provided with slots. The two sides of the cleaning block are inserted into the slots of the side frames for fixation. The side frames are fixedly connected to the inner wall of the separation area.

6. The oil recovery equipment for oily wastewater according to claim 5, characterized in that: A reinforcing plate is provided on the back of the cleaning block.

7. The oil recovery equipment for oily wastewater according to claim 5, characterized in that: The two sections of the top cover are equipped with quick-release latches between them and the side frame.

8. The oil recovery equipment for oily wastewater according to claim 1, characterized in that: The top surface of the isolation block is provided with a flow-avoiding ramp.

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