Efficient automatic oil-water separator for chemical industry

Abstract

The utility model discloses an efficient automatic oil-water separator for chemical industry, which comprises an air floating box, track boxes are arranged on two sides of the upper surface of the air floating box along the length direction of the air floating box, driving mechanisms are assembled on the track boxes, an oil storage box is assembled at one end of the air floating box, and a square pipe is connected between the driving mechanisms on two sides of the upper surface of the air floating box. The scraper blade is installed on the lower surface of the square pipe, the whole scraper blade is of a dustpan-shaped structure, the scraper blade is obliquely installed on the square pipe, thin grooves are evenly formed in the upper surface of the scraper blade, a round hole is formed in the rear end of the scraper blade and communicated with the thin grooves, the outer surface of the round hole is connected with an air suction pipe, and the tail end of the air suction pipe is externally connected with an air suction pump. The oil layer can be collected in advance by utilizing the capillary phenomenon, so that the oil layer is collected for the first time when the oil layer is scraped by the scraping plate, and the remaining oil is pushed into the oil storage box by the scraping plate to be collected for the second time.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical industry, in particular to a high-efficiency automatic oil-water separator for chemical industry. Background Art

[0002] The chemical industry needs to discharge a large amount of oily wastewater during the production process. By separating the oil and water in the wastewater, the impurities in the wastewater can be recovered and processed to avoid wastewater polluting the environment. Therefore, an oil-water separator is needed to treat and separate the wastewater.

[0003] Chinese patent CN217972671U discloses an oil scraper device for an oil-water separator, wherein oil scraper assemblies are arranged inside both sides of a mounting arm, the oil scraper assemblies include a moving block, a mounting column is fixedly connected to the bottom of the moving block, a mounting block is welded to one side of the mounting column, an oil-absorbing sponge is inserted into the mounting block, a rotating rod driven by a No. 1 motor is installed in the chemical tank, and the inner wall of the chemical tank can be scraped and cleaned by the oil scraper assemblies installed on the mounting arms on both sides of the rotating rod. In addition, the device arranges a driving assembly on the mounting arm that can drive the oil scraper assembly to move horizontally, and cooperates with the oil collecting assembly to achieve the effect of squeezing and collecting the scraped grease and sewage on the oil-absorbing sponge in the oil scraper assembly, thereby achieving the effect of fully automatic cleaning of the chemical tank.

[0004] In the prior art, the scraper uses an oil-absorbing sponge for adsorption when scraping oil. However, the adsorption capacity of the oil-absorbing sponge is limited. Although a squeezing component is provided to squeeze the oil-absorbing sponge, if the box is too long, the adsorption force of the oil-absorbing sponge will quickly become saturated during the scraping process, resulting in an increase in the oil-water separation time. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to solve the problems existing in the above-mentioned background technology, the utility model adopts the following technical solutions.

[0007] A high-efficiency automatic oil-water separator for chemical industry comprises an air flotation box, track boxes are arranged on both sides of the upper surface of the air flotation box along the length direction, a driving mechanism is installed on the track box, an oil storage box is installed at one end of the air flotation box, square tubes are connected between the driving mechanisms on both sides of the upper surface of the air flotation box, a scraper is installed on the lower surface of the square tube, the scraper is a dustpan-shaped structure as a whole, and the scraper is installed on the square tube in an inclined manner, fine grooves are evenly opened on the upper surface of the scraper, and a circular hole is opened at the rear end of the scraper, the circular hole is connected to the fine groove, an air suction pipe is connected to the outer surface of the circular hole, and an air suction pump is externally connected to the end of the air suction pipe.

[0008] Preferably, the driving mechanism includes a connecting frame, wheels are installed at both ends of the bottom of the connecting frame, a gear is rotatably connected to the front surface of the connecting frame, a driver is centrally installed on the upper surface of the connecting frame, and a track is sleeved between the driver and the gear.

[0009] Preferably, a rotating shaft is provided at the center of the rear surface of the gear, and the rotating shaft is inserted into the connecting frame. A bearing is provided at the connection between the rotating shaft and the connecting frame. Pulleys are installed on the front surface of the gear and the driving end of the driver, and the track is sleeved on the pulleys.

[0010] Preferably, a slide groove is provided on the upper surface of the track box, and the wheel is placed in the slide groove. A rack having the same length as the track box is provided on the upper surface of the track box and located on one side of the slide groove, and the gear is meshed with the rack.

[0011] Preferably, a notch is provided at one end of the air flotation tank connected to the oil storage box, and the installation position of the oil storage box is located below the notch. A partition is provided in the oil storage box, and the oil storage box is divided into two cavities by the partition.

[0012] Preferably, the partition is a Z-shaped structure as a whole, and drain pipes are inserted at both ends of the cavity close to one side of the flotation tank, and the drain pipes pass through the bottom of the flotation tank and are connected to a valve. The two sides of the partition are connected by a connecting pipe, and the height of one end of the connecting pipe is greater than the height of the upper end of the drain pipe, and the other end of the connecting pipe is located at the bottom of another cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The present application mainly adopts the flotation method to separate oil and water, which mainly involves introducing gas into the oil-water mixture to form fine bubbles. The bubbles attach to the oil droplets, causing the oil droplets to float to the water surface and then be removed by a scraper. In order to better scrape off the floating oil, the scraper in the present application is arranged at an angle, so that the floating oil can be well blocked during the scraping process, preventing the oil layer from accumulating due to the push of the scraper and flowing over the scraper to the other end of the scraper.

[0015] (2) Furthermore, when an object contacts an oil film, due to the intermolecular force, the oil will move from the high-pressure area to the low-pressure area. This process is called capillary phenomenon. Due to the influence of surface tension on the surface of the object, the oil film will tend to form a thin layer to reduce the total energy of the system. If the surface of the object is rough or uneven, the oil film will flow into these low-lying areas to form a continuous oil film. This phenomenon is called oil film flow. The present application utilizes this phenomenon to collect the oil layer in advance, so that the present application collects the oil for the first time when the scraper scrapes the oil layer, and the remaining oil layer is pushed into the oil storage box by the scraper for secondary collection. Specifically, the present application opens fine grooves on the scraper to improve the capillary phenomenon, and then uses a suction pipe to suck air into the groove, so that the oil film that enters the fine groove through the capillary phenomenon moves quickly to the suction pipe under the action of suction to be extracted.

[0016] (3) Furthermore, the oil storage box provided in the present application is divided into two parts by a partition. The oil pushed into the oil storage box by the scraper still contains a certain amount of water. The oil is stratified by settling in the oil storage box. As the liquid level rises, the upper layer of oil enters another chamber through a connecting pipe for storage, while the water level is discharged to a certain extent through a drain pipe, thereby optimizing the oil-water separation to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Three-dimensional structure of oil-water separator Figure 1 .

[0018] Figure 2 Three-dimensional structure of oil-water separator Figure 2 .

[0019] Figure 3 Three-dimensional structure of the oil scraper Figure 1 .

[0020] Figure 4 Three-dimensional structure of the oil scraper Figure 2 .

[0021] Figure 5 It is a three-dimensional structural diagram of the driving mechanism of the oil scraper device.

[0022] Figure 6 It is a side sectional plan view of the oil storage box.

[0023] Figure 7 This is a diagram of the internal structure of the oil storage box.

[0024] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0025] 1. Air flotation box; 11. Track box; 111. Slide; 112. Rack; 2. Oil storage box; 21. Partition; 22. Connecting pipe; 23. Liquid discharge pipe; 231. Valve; 3. Driving mechanism; 31. Connecting frame; 311. Wheel; 312. Driver; 313. Gear; 3134. Pulley; 314. Track; 4. Square tube; 41. Scraper; 411. Suction pipe. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0029] See also Figure 1 box Figure 2 The main structure diagram of the efficient automatic oil-water separator for chemical industry in this embodiment is shown. The oil-water separator in this embodiment includes a flotation tank 1, which is used to load the oil-water mixture. A plurality of aeration devices are provided at the bottom of the flotation tank 1. The oil-water mixture is aerated by the aeration devices to form fine bubbles. The bubbles are attached to the oil droplets so that the oil droplets float to the water surface. Furthermore, in order to collect the oil layer, the scraper 41 is provided in this embodiment. The scraper 41 is used to scrape the oil layer. Further, a scraper 41 is provided at one end of the flotation tank 1. The oil storage box 2 and the end where the flotation tank 1 is connected to the oil storage box 2 are provided with a notch, and the notch can limit the liquid level of the flotation tank 1 to prevent the liquid level from being flush with the upper surface of the flotation tank 1, causing liquid overflow when the scraper 41 scrapes the oil layer and aerates, and the installation position of the oil storage box 2 is located below the notch to facilitate receiving the oil layer scraped by the scraper 41, ensuring that the side wall of the oil storage box 2 will not block the oil layer from entering the oil storage box 2, and the scraper 41 pushes the oil layer toward the oil storage box 2, so that the oil layer enters the oil storage box 2 for collection.

[0030] See also Figure 3 and Figure 4The overall structure diagram of the oil scraping device in this embodiment is as follows. In order to enable the scraper 41 to move on the flotation tank 1 to scrape the oil layer, the present embodiment is provided with a driving mechanism 3, and the driving mechanism 3 is used to control the movement of the scraper 41. The driving mechanism 3 includes a connecting frame 31. A square tube 4 is connected between the connecting frames 31 in the driving mechanism 3 on both sides of the upper surface of the flotation tank 1. The scraper 41 is installed on the lower surface of the square tube 4. The square tube 4 spans the flotation tank 1. When the driving mechanism 3 moves, the scraper 41 is driven by the square tube 4 to scrape the oil layer on the surface of the flotation tank 1. The front surface of the connecting frame 31 is rotatably connected to a gear 313, and a driver 312 is centrally installed on the upper surface of the connecting frame 31. A crawler 314 is sleeved between the driver 312 and the gear 313. A rotating shaft is provided at the center of the rear surface of the gear 313. The shaft is inserted into the connecting frame 31, and a bearing is provided at the connection between the rotating shaft and the connecting frame 31. The front surface of the gear 313 and the driving end of the driver 312 are both installed with a pulley 3134, and the track 314 is sleeved on the pulley 3134. In this embodiment, when the driver 312 is started, the pulley 3134 thereon rubs the track 314, so that the track 314 rotates, and the track 314 further drives the pulley 3134 on the front surface of the gear 313 to rotate. Since the pulley 3134 on the gear 313 is fixedly connected to the moving gear 313, the gear 313 will rotate synchronously, and the driving mechanism 3 is mounted on the upper surface of the flotation tank 1, so that it rotates on the upper surface of the flotation tank 1, and then the driving mechanism 3 drives the scraper 41 to scrape the oil layer on the surface of the flotation tank 1 through the square tube 4 when the driving mechanism 3 moves.

[0031] See also Figure 3 and Figure 4In order to better scrape the floating oil and prevent the oil layer from accumulating due to the push of the scraper 41 and flowing over the scraper to the other end of the scraper 41, the scraper 41 in the present application is installed on the square tube 4 in an inclined manner. Furthermore, when an object contacts the oil film, due to the action of intermolecular forces, the oil will move from the high-pressure area to the low-pressure area. This process is called capillary phenomenon. Due to the influence of surface tension on the surface of the object, the oil film tends to form a thin layer to reduce the total energy of the system. If the surface of the object is rough or uneven, the oil film will flow into these low-lying areas to form a continuous oil film. This phenomenon is called oil film flow. The present application uses this phenomenon to collect the oil layer in advance. Thereby, the present application collects the oil for the first time when the scraper 41 scrapes the oil layer, and the remaining oil layer is pushed into the oil storage box 2 for secondary collection through the scraper 41. Specifically, the present application evenly opens fine grooves on the upper surface of the scraper 41, and uses the fine grooves to improve the capillary phenomenon, and opens a circular hole at the rear end of the scraper 41, the circular hole is connected to the fine groove, and the outer surface of the circular hole is connected to an air suction pipe 411, and the end of the air suction pipe 411 is externally connected to an air suction pump, and then the air suction pump is used to provide suction for the air suction pipe 411, and air is sucked into the groove through the air suction pipe 411, so that the oil film that enters the fine groove through the capillary phenomenon moves quickly into the air suction pipe 411 under the action of suction and is extracted by the air suction pump.

[0032] It should be noted that in order to facilitate the installation of the suction pipe 411 and effectively intercept the oil film, the scraper 41 in the present application is a dustpan-like structure as a whole, with one end in contact with the oil layer being open to facilitate the capillary movement of the oil film, and the other three sides are provided with linings to play a blocking role.

[0033] See also Figure 1 and Figure 2The gear 313 in the driving mechanism 3 rotates directly on the upper surface of the flotation tank 1. Insufficient friction will cause the gear 313 to idle, so that the driving mechanism 3 cannot drive the scraper 41 to move. Therefore, in this embodiment, a track box 11 is provided on both sides of the upper surface of the flotation tank 1 along its length direction. The driving mechanism 3 is mounted on the track box 11. A slide groove 111 is provided on the upper surface of the track box 11. Wheels 311 are provided at both ends of the bottom of the connecting frame 31, and the wheels 311 are placed in the slide groove 111. A rack 112 of the same length as the track box 11 is provided on the upper surface of the track box 11 and on one side of the slide groove 111. The gear 313 is meshed with the rack 112. In this embodiment, when the driver 312 rubs the track 314 through the pulley 3134, the track 314 drives the gear 313 to rotate. When the gear 313 is rotated on the rack 112, the sawtooth meshing between the rack 112 and the gear 313 makes the operation of the gear 313 more stable, which can effectively prevent the idling of the gear 313. Synchronously, the wheel 311 in the slide groove 111 is driven by the connecting frame 31 and rolls in the slide groove 111, thereby playing an auxiliary stabilizing role and preventing the connecting frame 31 from tilting the driving mechanism 3 due to the center of gravity shift caused by the gear 313 on the front surface. At the same time, the setting of the wheel 311 also reduces the friction between the connecting frame 31 and the track box 11, thereby reducing the power output of the driving mechanism 3. The entire driving mechanism 3 can also transfer gravity to the track box 11 through the wheel 311. The setting of the slide groove 111 further restricts the movement length of the driving mechanism 3.

[0034] It should be noted that when the driving mechanism 3 and the track box 11 are assembled, the connecting frame 31 is higher than the upper surface of the flotation tank 1 , so that the scraper 41 is located above the liquid level of the flotation tank 1 to prevent the liquid level from overflowing the scraper 41 .

[0035] See also Figure 6 and Figure 7The internal structure diagram of the oil storage box 2 in this embodiment. The oil pushed into the oil storage box 2 by the scraper 41 still contains a certain amount of water. Therefore, a partition 21 is provided in the oil storage box 2. The oil storage box 2 is divided into two cavities by the partition 21. The oil layer is first pushed into the cavity near the side of the air flotation tank 1 for sedimentation and stratification. As the scraper 41 continues to be pushed in, the liquid level rises, and the oil layer is always on the liquid level surface. Therefore, in this embodiment, connecting pipes 22 are inserted at both ends of the partition 21. When the oil layer overflows the connecting pipe 22, it flows to another layer of the cavity of the oil storage box 2 through the connecting pipe 22. At the same time, the water layer will gradually rise. In order to prevent the water layer from overflowing the connecting pipe 22, in this embodiment, drain pipes 23 are inserted at both ends of the cavity near one side of the flotation tank 1, and the drain pipe 23 runs through the bottom of the flotation tank 1 and is connected to a valve 231. A certain amount of water is discharged through the drain pipe 23 to ensure the liquid level height, and the specific liquid level height is controlled by the valve 231. In order to ensure the separation of oil and water, the height of one end of the connecting pipe 22 is designed to be greater than the upper end of the drain pipe 23, and the other end of the connecting pipe 22 is located at the bottom of another cavity for easy oil discharge.

[0036] It should be noted that when the scraper 41 pushes the oil layer into the oil storage box 2, the oil layer will have a certain inertia due to the push. Therefore, in order to prevent the oil layer from crossing the partition 21 and entering the storage cavity under the action of inertia, the partition 21 is designed as a Z-shaped structure in this embodiment, so that the upper end width of the cavity close to the side of the flotation tank 1 is larger, and its width is greater than the distance the oil layer splashes under the action of inertia, while the upper end width of the cavity on the other side is smaller, which is conducive to the accumulation of oil layer thickness and prevents the residual water from having an unclear boundary with the oil layer, thereby causing separation difficulties.

[0037] Furthermore, since in the prior art, the liquid in the flotation tank 1 needs to release a portion of water after scraping the oil so that the remaining oil-water mixture can continue to be injected, the scraper 41 in the present application is fixedly connected. When the oil layer in the flotation tank 1 is scraped off, a portion of the water inside it is released to cause the liquid level to drop. At this time, the scraper 41 is reset. When the liquid level rises with the injection of the oil-water mixture, aeration and oil scraping are performed again. It is true that the fixed connection of the scraper 41 will have certain shortcomings, but in view of the fact that the scraper 41 in the prior art already has an adjustment function, this part is not improved in the present application, so it will not be elaborated. In actual use, a telescopic structure can be installed to enable the scraper 41 to adjust the angle or be raised and lowered.

[0038] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A high-efficiency automatic oil-water separator for chemical industry, comprising an air flotation box (1), wherein the upper surface of the air flotation box (1) is provided with track boxes (11) on both sides along the length direction thereof, and a driving mechanism (3) is mounted on the track box (11), and an oil storage box (2) is mounted at one end of the air flotation box (1). Features: A square tube (4) is connected between the driving mechanisms (3) on both sides of the upper surface of the air flotation box (1), and a scraper (41) is installed on the lower surface of the square tube (4). The scraper (41) is a dustpan-shaped structure as a whole, and the scraper (41) is installed on the square tube (4) in an inclined manner. Fine grooves are evenly formed on the upper surface of the scraper (41), and a circular hole is formed at the rear end of the scraper (41), the circular hole is connected to the fine groove, and an air suction pipe (411) is connected to the outer surface of the circular hole, and an air suction pump is externally connected to the end of the air suction pipe (411).

2. The high-efficiency automatic oil-water separator for chemical industry according to claim 1, characterized in that: The driving mechanism (3) comprises a connecting frame (31), both ends of the bottom of the connecting frame (31) are equipped with wheels (311), the front surface of the connecting frame (31) is rotatably connected to a gear (313), and a driver (312) is centrally mounted on the upper surface of the connecting frame (31), and a crawler track (314) is sleeved between the driver (312) and the gear (313).

3. The high-efficiency automatic oil-water separator for chemical industry according to claim 2, characterized in that: A rotating shaft is provided at the center of the rear surface of the gear (313), and the rotating shaft is plugged into the connecting frame (31). A bearing is provided at the connection between the rotating shaft and the connecting frame (31). A pulley (3134) is installed on the front surface of the gear (313) and the driving end of the driver (312), and the crawler (314) is sleeved on the pulley (3134).

4. The high-efficiency automatic oil-water separator for chemical industry according to claim 2, characterized in that: The upper surface of the track box (11) is provided with a slide groove (111), and the wheel (311) is placed in the slide groove (111). A rack (112) having the same length as the track box (11) is provided on the upper surface of the track box (11) and located on one side of the slide groove (111), and the gear (313) is meshed with the rack (112).

5. The high-efficiency automatic oil-water separator for chemical industry according to claim 4, characterized in that: A notch is provided at one end of the air flotation box (1) connected to the oil storage box (2), and the installation position of the oil storage box (2) is located below the notch. A partition (21) is provided inside the oil storage box (2), and the oil storage box (2) is divided into two cavities by the partition (21).

6. The high-efficiency automatic oil-water separator for chemical industry according to claim 5, characterized in that: The partition (21) is of a Z-shaped structure as a whole, and a discharge pipe (23) is inserted into a cavity on one side close to the flotation tank (1); the discharge pipe (23) passes through the bottom of the flotation tank (1) and is connected to a valve (231); the two sides of the partition (21) are connected via a connecting pipe (22); the height of one end of the connecting pipe (22) is greater than the height of the upper end of the discharge pipe (23); and the other end of the connecting pipe (22) is located at the bottom of another cavity.

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