Scum scraping mechanism of dissolved air floatation tank

Abstract

The scum scraping mechanism comprises the dissolved air flotation tank, the scum scraping mechanism is erected on the dissolved air flotation tank, a scum bearing tank is arranged on one side of the dissolved air flotation tank corresponding to the scum scraping mechanism, the scum scraping mechanism comprises a conveying chain mechanism erected on the dissolved air flotation tank, and the scum bearing tank is arranged on the other side of the dissolved air flotation tank corresponding to the scum scraping mechanism. The conveyor chain mechanism is provided with a scraper mechanism used for scraping floating scum on the dissolved air floatation tank, the conveyor chain lubricating equipment comprises a chain lubricating mechanism installed corresponding to a chain and chain wheel assembly, and the chain lubricating mechanism comprises an oil dripping nozzle erected on a chain. The output port of the oil dripping nozzle is over against the joint of each chain link of the chain, and the input end of the oil dripping nozzle is connected with an external oil supply mechanism. The conveying chain lubricating device is reasonable in design, the chain and chain wheel assembly is lubricated through the conveying chain lubricating device, the possibility that the connecting positions of all chain links of a chain are rusted and clamped, and consequently the chain is broken is reduced, and specialized sewage treatment is facilitated.

Description

Technical Field

[0001] The utility model relates to a scum scraping mechanism for a dissolved air flotation tank. Background Art

[0002] Dissolved air flotation machine is a commonly used water treatment equipment, mainly used to treat suspended matter and turbidity in water to make the water quality meet the required standards. It dissolves gas into water to produce weak bubbles, and uses the buoyancy of the bubbles to bring suspended matter to the water surface, thereby achieving the purpose of solid-liquid separation. A dissolved air flotation tank is a water treatment tank equipped with a dissolved air flotation machine. Conventionally, the conveyor chain drives the scraper to move back and forth, and the floating scum on the flotation tank is scraped into the scum receiving area to achieve the scraping of scum. Due to the high humidity on the dissolved air flotation tank, long-term use will cause the joints of the chain to rust, and then the problem of jamming will occur. In severe cases, it may even cause the chain to break. Summary of the invention

[0003] In view of this, the purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a scum scraping mechanism for a dissolved air flotation tank, thereby reducing the possibility of chain breakage caused by rust and jamming at the connection points of each chain link, and facilitating professional sewage treatment.

[0004] The present invention is implemented by the following scheme: a scum scraping mechanism for a dissolved air flotation tank: comprising a dissolved air flotation tank, the scum scraping mechanism is mounted on the dissolved air flotation tank, the scum scraping mechanism comprises a conveyor chain mechanism mounted on the dissolved air flotation tank, a scraper mechanism for scraping away floating scum on the dissolved air flotation tank is installed on the conveyor chain mechanism, and a conveyor chain lubrication device is installed on the dissolved air flotation tank.

[0005] Furthermore, the transmission chain mechanism includes a chain sprocket assembly that is symmetrically arranged on the left and right, and the chain sprocket assembly includes a driving sprocket and a driven sprocket. The driving sprocket and the driven sprocket are arranged correspondingly in front and back, and transmission is achieved between the driving sprocket and the driven sprocket via a chain. The driving sprockets of the two chain sprocket assemblies are connected by an active transmission rod, and the driven sprockets of the two chain sprocket assemblies are connected by a driven transmission rod.

[0006] Furthermore, the scraper mechanism includes a scraper, which is respectively connected to the chains on both sides through a connecting assembly. The connecting assembly includes a connecting rod symmetrically arranged on the left and right, one end of the connecting rod is connected to the scraper, and the other end is fixedly connected to a fixed block, and the fixed block is fixed to the chain.

[0007] Furthermore, the connecting rod is an inclined rod, the inclined upper end of the connecting rod faces the middle of the dissolved air flotation tank, the inclined lower end of the connecting rod faces outward, a connecting plate is welded on one end of the connecting rod, the connecting plate is screwed on the scraper, an L-shaped bracket is connected to the side of the fixed block, and the other end of the connecting rod is screwed on the L-shaped bracket.

[0008] Furthermore, the bending angle between the two plates of the L-shaped bracket corresponds to the inclination angle of the connecting rod, one plate of the L-shaped bracket is fixed on the fixed block, and a through hole is provided on the other plate corresponding to the inclined lower end of the connecting rod, a thread is provided on the outer periphery of the inclined lower end of the connecting rod, the inclined lower end of the connecting rod passes through the through hole, and nuts are screwed on the two ends of the through hole on the inclined lower end of the connecting rod, and the two nuts are respectively abutted against the plates at the two ends of the through hole.

[0009] Furthermore, the scraper mechanism also includes a scraper fixing groove, the scraper is screwed to the scraper fixing groove, and the connecting plate is screwed to the side wall of the scraper fixing groove.

[0010] Furthermore, a vertical partition is installed in the dissolved air flotation tank, which divides the dissolved air flotation tank into a flotation area and a slag holding area. The slag scraping mechanism is installed on the flotation area, and the end of the vertical partition even has a guide plate corresponding to the scraper movement trajectory.

[0011] Furthermore, the conveyor chain lubrication equipment includes a chain lubrication mechanism installed corresponding to the chain sprocket assembly, and the chain lubrication mechanism includes an oil drip nozzle mounted on the chain, the output port of the oil drip nozzle is opposite to the connection between each link of the chain, and the input end of the oil drip nozzle is connected to an external oil supply mechanism.

[0012] Furthermore, the chain lubrication mechanism also includes a collecting tank, which is located below the oil drip nozzle, and the chain sprocket assembly is located between the oil drip nozzle and the collecting tank, and the output port of the collecting tank is connected to an external oil collecting tank via a pipeline.

[0013] Furthermore, each link on the chain is connected by a stainless steel pin.

[0014] Compared with the prior art, the present invention has the following beneficial effects: reasonable design, lubrication of the chain sprocket assembly by the transmission chain lubrication equipment, reducing the possibility of rust and jamming of the connection points of the chain links, resulting in chain breakage, and facilitating professional sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0016] Figure 2 for Figure 1 AA cross-sectional structure diagram;

[0017] Figure 3 for Figure 2 The enlarged structural diagram at B in the middle;

[0018] Figure 4 for Figure 2 The enlarged structural diagram at C in the middle;

[0019] Figure 5 for Figure 3 Schematic diagram of the D-direction structure.

[0020] In the figure: 1-dissolved air flotation tank; 2-scum scraping mechanism; 3-conveying chain mechanism; 4-scraper mechanism; 5-conveying chain lubrication equipment; 6-chain sprocket assembly; 7-driving sprocket; 8-driven sprocket; 9-chain; 10-driving transmission rod; 11-driven transmission rod; 12-bearing seat; 13-scraper; 14-connecting rod; 15-fixing block; 16-connecting plate; 17-L-shaped bracket; 18-nut; 19-scraper fixing groove; 20-vertical partition; 21-air flotation area; 22-slag bearing area; 23-guide plate; 24-chain lubrication mechanism; 25-oil drip nozzle; 26-oil drip nozzle bracket; 27-collecting tank; 28-stainless steel pin. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] It should be noted that the following 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 meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0023] 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 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.

[0024] like Figure 1-5As shown, a scum scraping mechanism of a dissolved air flotation tank comprises a dissolved air flotation tank 1, on which a scum scraping mechanism 2 is mounted, a scum receiving tank is arranged in one side of the dissolved air flotation tank corresponding to the scum scraping mechanism, the scum scraping mechanism comprises a conveyor chain mechanism 3 mounted on the dissolved air flotation tank, the scum scraping mechanism is driven to move by the conveyor chain mechanism, so as to scrape the scum on the dissolved air flotation tank into the scum receiving tank, a scraper mechanism 4 for scraping away the floating scum on the dissolved air flotation tank is mounted on the conveyor chain mechanism, a conveyor chain lubricating device 5 is mounted on the dissolved air flotation tank, and when in use, the conveyor chain mechanism is lubricated by the conveyor chain lubricating device, so as to reduce the possibility of rust and jamming of the connection parts of each chain link on the conveyor chain mechanism, resulting in the possibility of chain breakage.

[0025] In this embodiment, in order to realize the transmission chain mechanism driving the scum scraping mechanism to move, the transmission chain mechanism includes a chain sprocket assembly 6 that is symmetrically arranged on the left and right, and the chain sprocket assembly includes a driving sprocket 7 and a driven sprocket 8. The driving sprocket and the driven sprocket are arranged correspondingly in front and back, and the driving sprocket and the driven sprocket are transmitted through a chain 9. The driving sprockets of the two chain sprocket assemblies are connected by an active transmission rod 10, and the driven sprockets of the two chain sprocket assemblies are connected by a driven transmission rod 11. Bearing seats 12 are provided on the ends of the active transmission rod and the driven transmission rod on the dissolved air flotation tank. One end of the active transmission rod passes through the bearing seat and is connected to an external motor. The active transmission rod is driven by the motor to rotate to drive the active sprocket to rotate, and then the chain is driven to achieve transmission through the cooperation of the driven sprocket, and finally the scum scraping mechanism is moved.

[0026] In this embodiment, in order to realize the connection between the scraper mechanism and the chain, the scraper mechanism includes a scraper 13, and the scraper is respectively connected to the chains on both sides through a connecting component. The connecting component includes a connecting rod 14 symmetrically arranged on the left and right, one end of the connecting rod is connected to the scraper, and the other end is fixedly connected with a fixed block 15, and the fixed block is fixed on the chain. The lower ends of the left and right connecting rods are connected to the same position of the two corresponding left and right chains. The fixed block can be fixed to the chain link by a pin, or it can be fixed by existing methods such as bolts.

[0027] In this embodiment, in order to design reasonably and avoid interference between the connecting rod and the conveyor chain lubrication equipment, the connecting rod is an inclined rod, the inclined upper end of the connecting rod faces the middle of the dissolved air flotation tank, and the inclined lower end of the connecting rod faces outward. A connecting plate 16 is welded to one end of the connecting rod, and the connecting plate is screwed to the scraper. An L-shaped bracket 17 is connected to the side of the fixed block, and the other end of the connecting rod is screwed to the L-shaped bracket. By tilting the connecting rod inward instead of vertically upward, there is a misalignment between the connecting rod and the conveyor chain lubrication equipment to avoid interference.

[0028] In this embodiment, the bending angle between the two plates of the L-shaped bracket corresponds to the inclination angle of the connecting rod, that is, the angle between the two plates is greater than 90 degrees. One plate of the L-shaped bracket is fixed on the fixed block, and a through hole is provided on the other plate corresponding to the inclined lower end of the connecting rod. Since the bending angle between the two plates of the L-shaped bracket corresponds to the inclination angle of the connecting rod, one plate is perpendicular to the connecting rod, which is convenient for threaded connection. A thread is provided on the outer periphery of the inclined lower end of the connecting rod, and the inclined lower end of the connecting rod passes through the through hole. Nuts 18 are screwed on the two ends of the through hole on the inclined lower end of the connecting rod, and the two nuts are respectively abutted against the plates at the two ends of the through hole. The plate is clamped by the two nuts to realize the connection between the connecting rod and the L-shaped bracket.

[0029] In this embodiment, for reasonable design, the scraper mechanism further includes a scraper fixing groove 19, the scraper is screwed to the scraper fixing groove, and the connecting plate is screwed to the side wall of the scraper fixing groove.

[0030] In this embodiment, for the sake of reasonable design, a vertical partition 20 is installed in the dissolved air flotation tank. The vertical partition divides the dissolved air flotation tank into a flotation area 21 and a slag receiving area 22. The slag receiving area is the slag receiving tank. The slag scraping mechanism is installed on the flotation area. The end of the vertical partition even has a guide plate 23 corresponding to the movement trajectory of the scraper. The scraper sends the slag on the water surface into the slag receiving area through the guide plate. An outward discharge pipeline is provided in the slag receiving area. Since it is not an improvement point of the present device, it will not be described in detail.

[0031] In this embodiment, in order to achieve lubrication, the conveyor chain lubrication equipment includes a chain lubrication mechanism 24 installed corresponding to the chain sprocket assembly, that is, there are two chain lubrication mechanisms, which are respectively arranged corresponding to each chain sprocket assembly, and the chain lubrication mechanism includes an oil dripping nozzle 25 mounted on the chain, and the output port of the oil dripping nozzle is directly opposite to the connection between each link of the chain, and the input end of the oil dripping nozzle is connected to an external oil supply mechanism. An oil dripping nozzle bracket 26 is installed on the top side wall of the dissolved air flotation tank, and the oil dripping nozzle is installed on the oil dripping nozzle bracket. Since the connecting rod is inclined inward, the connecting rod will not interfere with the oil dripping nozzle. The external oil supply mechanism can be a lubricating oil tank with a delivery pump, and the connection between each link of the chain is lubricated by dripping oil from the oil dripping nozzle.

[0032] In this embodiment, in order to reduce the amount of lubricant falling into the dissolved air flotation tank, the chain lubrication mechanism also includes a collection tank 27, which is located below the oil drip nozzle, and the chain sprocket assembly is located directly between the oil drip nozzle and the collection tank. The output port of the collection tank is connected to an external oil collection tank through a pipeline with a filter screen to facilitate the recovery of the lubricant. At the same time, the oil dripping of this device is carried out once at regular intervals as needed.

[0033] In this embodiment, in order to further avoid jamming, each link on the chain is connected by a stainless steel pin 28 .

[0034] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0035] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0036] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0037] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above-mentioned utility model are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above-mentioned utility model include shapes that are approximate, similar or close to them.

[0038] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A scum scraping mechanism for a dissolved air flotation tank, characterized in that: It comprises a dissolved air flotation tank, on which a scum scraping mechanism is mounted, the scum scraping mechanism comprises a conveyor chain mechanism mounted on the dissolved air flotation tank, on which a scraper mechanism for scraping away floating scum on the dissolved air flotation tank is mounted, and a conveyor chain lubrication device is mounted on the dissolved air flotation tank.

2. The scum scraping mechanism of the dissolved air flotation tank according to claim 1, characterized in that; The transmission chain mechanism includes a chain sprocket assembly that is symmetrically arranged on the left and right, and the chain sprocket assembly includes a driving sprocket and a driven sprocket. The driving sprocket and the driven sprocket are arranged in front and back correspondence, and transmission is achieved between the driving sprocket and the driven sprocket via a chain. The driving sprockets of the two chain sprocket assemblies are connected by an active transmission rod, and the driven sprockets of the two chain sprocket assemblies are connected by a driven transmission rod.

3. The scum scraping mechanism of the dissolved air flotation tank according to claim 2, characterized in that; The scraper mechanism includes a scraper, which is connected to chains on both sides through a connecting assembly. The connecting assembly includes a connecting rod symmetrically arranged on the left and right. One end of the connecting rod is connected to the scraper, and the other end is fixedly connected to a fixing block, which is fixed to the chain.

4. The scum scraping mechanism of the dissolved air flotation tank according to claim 3, characterized in that: The connecting rod is an inclined rod, the inclined upper end of the connecting rod faces the middle of the dissolved air flotation tank, and the inclined lower end of the connecting rod faces outward. A connecting plate is welded on one end of the connecting rod, and the connecting plate is screwed on the scraper. An L-shaped bracket is connected to the side of the fixed block, and the other end of the connecting rod is screwed on the L-shaped bracket.

5. The scum scraping mechanism of the dissolved air flotation tank according to claim 4, characterized in that; The bending angle between the two plates of the L-shaped bracket corresponds to the inclination angle of the connecting rod. One plate of the L-shaped bracket is fixed on the fixed block, and a through hole is provided on the other plate corresponding to the inclined lower end of the connecting rod. A thread is provided on the outer periphery of the inclined lower end of the connecting rod. The inclined lower end of the connecting rod passes through the through hole. Nuts are screwed on the two ends of the through hole on the inclined lower end of the connecting rod, and the two nuts are respectively abutted against the plates at the two ends of the through hole.

6. The scum scraping mechanism of the dissolved air flotation tank according to claim 4, characterized in that; The scraper mechanism also includes a scraper fixing groove, the scraper is screwed to the scraper fixing groove, and the connecting plate is screwed to the side wall of the scraper fixing groove.

7. The scum scraping mechanism of the dissolved air flotation tank according to claim 3, characterized in that; A vertical partition is installed in the dissolved air flotation tank, which divides the dissolved air flotation tank into a flotation area and a slag holding area. The slag scraping mechanism is installed on the flotation area, and the end of the vertical partition even has a guide plate corresponding to the scraper movement trajectory.

8. The scum scraping mechanism of the dissolved air flotation tank according to claim 2, characterized in that; The conveyor chain lubrication device includes a chain lubrication mechanism installed corresponding to the chain sprocket assembly, and the chain lubrication mechanism includes an oil drip nozzle mounted on the chain, the output port of the oil drip nozzle is directly opposite to the connection between each link of the chain, and the input end of the oil drip nozzle is connected to an external oil supply mechanism.

9. The scum scraping mechanism of the dissolved air flotation tank according to claim 8, characterized in that; The chain lubrication mechanism also includes a collecting tank, which is located below the oil drip nozzle. The chain sprocket assembly is located between the oil drip nozzle and the collecting tank. The output port of the collecting tank is connected to an external oil collecting tank via a pipeline.

10. The scum scraping mechanism of the dissolved air flotation tank according to claim 3, characterized in that; The chain links on the chain are connected via stainless steel pins.

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