A long-period operation floating and scraping equipment suitable for high-sulfur oil-containing sewage

Abstract

The utility model relates to water treatment technical field discloses a long -period operation flotation slag scraping equipment suitable for high sulfur oil -containing sewage, and the top of flotation box is equipped with mounting seat, and the top surface of mounting seat and flotation box forms the ladder shape, and long -period operation flotation slag scraping equipment includes speed reducer, transmission assembly, scraper drive assembly and scraper assembly, and speed reducer sets up on the top surface of mounting seat, and drive sprocket stretches out the outer wall of the outer wall of flotation box, and drive sprocket is connected with transmission sprocket through transmission chain, and transmission sprocket is connected at the end of driving shaft, and scraper drive assembly includes driving shaft, driven shaft, driving traction sprocket and driving bearing connected on driving shaft, and driven traction sprocket and driven bearing connected on driven shaft, the utility model can realize bearing on -line maintenance and convenient on -line adjustment transmission chain tightness and on -line adjustment traction chain tightness, can increase the clearance in flotation box.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a long-cycle flotation scraping device suitable for high-sulfur and oily wastewater. Background Technology

[0002] In the normal process of oil refinery wastewater treatment, a flotation unit is set up. The process of microbubbles rising to the surface brings suspended solids, colloids, and other substances in the water to the surface, forming scum, thereby purifying the water. Two commonly used flotation processes are pressurized dissolved air flotation (DAF) and vortex flotation. Pressurized DAF: This uses a partial reflux operation. A reflux pump pressurizes the wastewater and unpurified air together and sends them into a dissolved air tank. The air is then released through a release device. Due to the sudden reduction to atmospheric pressure, the gas previously dissolved in the water forms many fine bubbles that escape. As these bubbles rise in the water, they also bring various suspended solids to the surface. Vortex flotation: This uses a high-speed rotating impeller of a flotation vortex separator to create a negative pressure at the center of the impeller, drawing in air. As the air mixes thoroughly with the wastewater, it is broken into tiny bubbles by the impeller. Within the flotation zone, these microbubbles bring suspended solids to the surface.

[0003] Then, flocculants such as PAC and PAM are added to the primary and secondary air flotation wastewater. The scum formed after the addition of chemicals is scraped and pushed out of the system by the flotation scraper. However, when treating high-sulfur wastewater, the flotation scraper is used because the influent is composed of complex and highly corrosive high-sulfur and high-chlorine crude oil. The entire flotation scraper is built into the flotation tank, which is fully enclosed and humid. The interior contains corrosive media such as sulfides and chlorides at high concentrations. The internal operating components of the scraper are severely corroded, which is detrimental to the safe and stable operation of the scraper. The operating cycle is generally less than 6 months. Furthermore, the chains of the flotation scraper are prone to desynchronization due to the complex environment, leading to chain slippage or breakage, which is inconvenient for daily maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a long-cycle flotation scraping device suitable for high-sulfur and oily wastewater, which enables online maintenance of bearings and facilitates online adjustment of transmission chain tension and traction chain tension, thereby increasing the net space inside the flotation tank.

[0005] To achieve the above objectives, this utility model provides a long-cycle flotation scraping device suitable for high-sulfur, oily wastewater. The long-cycle flotation scraping device is mounted on a flotation tank, with a mounting base on the top of the flotation tank forming a stepped shape with the top surface of the flotation tank. The long-cycle flotation scraping device includes a reducer, a transmission assembly, a scraper drive assembly, and a scraper assembly. The reducer is mounted on the top surface of the mounting base. The transmission assembly includes a drive sprocket, a transmission sprocket, and a transmission chain. The drive sprocket is connected to the output shaft of the reducer and extends beyond the outer wall of the flotation tank. The drive sprocket is connected to the transmission sprocket via the transmission chain. The scraper drive assembly includes an active... The flotation tank comprises a drive shaft, a driven shaft, a drive traction sprocket and a drive bearing connected to the drive shaft, and a driven traction sprocket and a driven bearing connected to the driven shaft. The drive sprocket is connected to the end of the drive shaft. There are two drive bearings, each located on one side of the top surface of the flotation tank. The two drive traction sprockets are connected to both ends of the drive shaft and sandwiched between the two drive bearings. There are two driven bearings, each located on one side of the top surface of the flotation tank. The two driven traction sprockets are connected to both ends of the driven shaft and sandwiched between the two driven bearings. The drive traction sprocket is connected to the driven traction sprocket via a traction chain. The scraper assembly is connected to the two traction chains.

[0006] As a preferred embodiment of this utility model, the transmission assembly is disposed on the outer wall of the flotation tank, and the outer wall of the flotation tank is provided with a protective cover for covering the transmission assembly.

[0007] As a preferred embodiment of this utility model, the scraper assembly includes a scraper and scraper rollers. Scraper rollers are provided at both ends of the scraper. The two sides of the scraper are respectively connected to the two traction chains. The inner wall of the flotation tank is provided with a guide rail that slides with the scraper rollers.

[0008] As a preferred embodiment of this utility model, the scraper assembly further includes a support rod, and the two ends of the support rod are provided with support rollers that slide in cooperation with the guide rail.

[0009] As a preferred embodiment of this utility model, multiple support rods and scrapers are provided, and the support rods and scrapers are arranged at intervals.

[0010] As a preferred embodiment of this utility model, both the transmission component and the scraper drive component are made of stainless steel.

[0011] As a preferred embodiment of this utility model, the traction chain is a large-pitch chain with a pitch of 100mm.

[0012] Compared with the prior art, the beneficial effects of this utility model embodiment of a long-cycle flotation scraping device suitable for high-sulfur and oily wastewater are as follows:

[0013] In this invention, the mounting base and the top surface of the flotation tank form a stepped shape. The reducer is mounted on the mounting base, and both the drive bearing and the driven bearing are located on the top surface of the flotation tank. This allows for online maintenance of the bearings and facilitates online adjustment of the transmission chain tension and the traction chain tension. Additionally, the mounting base is raised at the top of the flotation tank, which increases the clearance inside the flotation tank and creates a larger installation space for the slag scraper. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] Figure 1 A schematic diagram of the structure of a long-cycle flotation scraping device suitable for high-sulfur and oily wastewater provided by this utility model;

[0016] Figure 2 for Figure 1 Sectional view along the middle AA direction;

[0017] Figure 3 This is a schematic diagram of the transmission assembly.

[0018] Figure 4 This is a schematic diagram of the scraper assembly.

[0019] In the figure, flotation tank 1; mounting base 2; reducer 3; transmission assembly 4; drive sprocket 41; transmission sprocket 42; transmission chain 43; protective cover 44; scraper drive assembly 5; drive shaft 51; driven shaft 52; drive traction sprocket 53; drive bearing 54; driven traction sprocket 55; driven bearing 56; traction chain 57; scraper assembly 6; scraper 61; scraper roller 62; support rod 63; support roller 64; guide rail 65. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figures 1 to 4 As shown in the preferred embodiment of this utility model, a long-cycle flotation scraping device suitable for high-sulfur oily wastewater is provided. The long-cycle flotation scraping device is mounted on a flotation tank 1. A mounting base 2 is provided on the top of the flotation tank 1, forming a stepped shape with the top surface of the flotation tank 1. The long-cycle flotation scraping device includes a reducer 3, a transmission assembly 4, a scraper drive assembly 5, and a scraper assembly 6. The reducer 3 is disposed on the top surface of the mounting base 2. The transmission assembly 4 includes a drive sprocket 41 and a transmission... The flotation tank 1 has a sprocket 42 and a drive chain 43. The drive sprocket 41 is connected to the output shaft of the reducer 3 and extends beyond the outer wall of the flotation tank 1. The drive sprocket 41 is connected to the drive sprocket 42 via the drive chain 43. The scraper drive assembly 5 includes a drive shaft 51, a driven shaft 52, a drive traction sprocket 53 connected to the drive shaft 51 and mounted on the drive shaft 51, and a driven traction sprocket 55 connected to the driven shaft 52 and mounted on the driven shaft 52. The drive sprocket 42... Connected to the end of the drive shaft 51, the shaft ends of both ends of the drive shaft 51 and the shaft ends of both ends of the driven shaft 52 are machined by two keyway holes on a straight line using a CNC universal milling machine. This ensures that the drive traction sprockets 53 at both ends of the drive shaft 51 and the driven traction sprockets 55 at both ends of the driven shaft 52 can operate synchronously without twisting. This improves the balance and significantly enhances the overall performance and service life of the flotation scraping equipment. The drive shaft 51 supports two sprockets, each located on the top surface of the flotation tank 1. On both sides, two active traction sprockets 53 are respectively connected to the two ends of the active shaft 51 and sandwiched between the two active shaft 51 bearings. Two driven shafts 52 are provided and respectively disposed on both sides of the top surface of the flotation tank 1. Two driven traction sprockets 55 are respectively connected to the two ends of the driven shaft 52 and sandwiched between the two driven shaft 52 bearings. The active traction sprockets 53 are connected to the driven traction sprockets 55 through traction chains 57. The scraper assembly 6 is connected to the two traction chains 57.

[0023] In this invention, the mounting base 2 and the top surface of the flotation box 1 form a stepped shape. The reducer 3 is mounted on the mounting base 2. At the same time, the drive shaft 51 bearing and the driven shaft 52 bearing are both set on the top surface of the flotation box 1. This enables online maintenance of the bearings and facilitates online adjustment of the tension of the transmission chain 43 and the tension of the traction chain 57. In addition, the mounting base 2 with an increased height is set on the top of the flotation box 1, which can increase the clearance inside the flotation box 1 and form a larger installation space for the slag scraper.

[0024] For example, the transmission assembly 4 is disposed on the outer wall of the flotation tank 1, and the outer wall of the flotation tank 1 is provided with a protective cover 44 for covering the transmission assembly 4, which effectively protects the transmission assembly 4. At the same time, after removing the protective cover 44, the transmission assembly 4 can be quickly adjusted online.

[0025] For example, the scraper assembly 6 includes a scraper 61 and scraper rollers 62. Scraper rollers 62 are provided at both ends of the scraper 61. The two sides of the scraper 61 are respectively connected to two traction chains 57. The inner wall of the flotation tank 1 is provided with a guide rail 65 that slides with the scraper rollers 62. The scraper 61 is driven by the traction chain 57, and the scraper rollers 62 run along the guide rail 65 to ensure the stable operation of the scraper 61 and avoid the traction chain 57 from loosening, which would cause the height of the scraper 61 to change and affect the slag scraping effect.

[0026] Specifically, the scraper assembly 6 further includes a support rod 63, and the two ends of the support rod 63 are provided with support rollers 64 that slide in cooperation with the guide rail 65. Multiple support rods 63 and scrapers 61 are provided, and the support rods 63 and scrapers 61 are arranged at intervals, which can further improve the running stability of the traction chain 57 and the scraper 61.

[0027] For example, in highly corrosive environments, the transmission assembly 4, the scraper drive assembly 5, the scraper 61, and the support rod 63 are all made of stainless steel, which effectively extends their service life.

[0028] Specifically, the traction chain 57 is a large-pitch chain with a pitch of 100mm, which increases the tensile strength and corrosion resistance of the traction chain 57.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A long-cycle flotation scraping device suitable for high-sulfur, oily wastewater, wherein the long-cycle flotation scraping device is installed on a flotation tank, characterized in that, The top of the flotation tank is provided with a mounting base, which forms a stepped shape with the top surface of the flotation tank. The long-cycle flotation scraping equipment includes a reducer, a transmission assembly, a scraper drive assembly, and a scraper assembly. The reducer is disposed on the top surface of the mounting base. The transmission assembly includes a drive sprocket, a transmission sprocket, and a transmission chain. The drive sprocket is connected to the output shaft of the reducer and extends beyond the outer wall of the flotation tank. The drive sprocket is connected to the transmission sprocket via the transmission chain. The scraper drive assembly includes a drive shaft, a driven shaft, a drive traction sprocket and a drive bearing connected to the drive shaft, and... A driven traction sprocket and a driven bearing are connected to the driven shaft. The drive sprocket is connected to the end of the drive shaft. Two drive bearings are provided and are respectively located on both sides of the top surface of the flotation tank. Two drive traction sprockets are respectively connected to both ends of the drive shaft and sandwiched between the two drive bearings. Two driven bearings are provided and are respectively located on both sides of the top surface of the flotation tank. Two driven traction sprockets are respectively connected to both ends of the driven shaft and sandwiched between the two driven bearings. The drive traction sprocket is connected to the driven traction sprocket via a traction chain. The scraper assembly is connected to the two traction chains.

2. The long-cycle flotation scraping equipment for high-sulfur, oily wastewater as described in claim 1, characterized in that, The transmission assembly is disposed on the outer wall of the flotation tank, and the outer wall of the flotation tank is provided with a protective cover for covering the transmission assembly.

3. The long-cycle flotation scraping equipment for high-sulfur, oily wastewater as described in claim 1, characterized in that, The scraper assembly includes a scraper and scraper rollers. Scraper rollers are provided at both ends of the scraper. The two sides of the scraper are respectively connected to the two traction chains. The inner wall of the flotation tank is provided with a guide rail that slides with the scraper rollers.

4. The long-cycle flotation scraping equipment for high-sulfur, oily wastewater as described in claim 3, characterized in that, The scraper assembly also includes a support rod, and the two ends of the support rod are provided with support rollers that slide in cooperation with the guide rail.

5. The long-cycle flotation scraping equipment for high-sulfur, oily wastewater as described in claim 4, characterized in that, Multiple support rods and scrapers are provided, and the support rods and scrapers are arranged at intervals.

6. The long-cycle flotation scraping equipment for high-sulfur, oily wastewater as described in claim 1, characterized in that, Both the transmission component and the scraper drive component are made of stainless steel.

7. The long-cycle flotation scraping equipment for high-sulfur, oily wastewater as described in claim 1, characterized in that, The traction chain is a large-pitch chain with a pitch of 100mm.

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