CN220245647U - Scraper device of air floatation tank - Google Patents

Abstract

The utility model provides an air flotation pool scraper device, which includes a plurality of scraper assemblies for scraping suspended particles in the upper part of the air flotation pool and a power assembly that drives the scraper assembly to move. The scraper assembly includes a first scraper and a A second scraper is vertically slidably provided on one side of the first scraper. The first scraper and the second scraper are connected through a linkage mechanism, and the linkage mechanism is away from the second scraper. A floating ball for adjusting the sliding position of the second scraper is fixedly provided at one end, and the lowest end of the floating ball is higher than the lowest end of the second scraper. In this utility model, the floating ball drives the second sliding plate to move toward the liquid level of the air flotation pool through the link mechanism. Since the lowest end of the floating ball is higher than the lowest end of the second scraper, it is ensured that there is always a part of the second scraper. There are inserts below the liquid level to better clean the scum floating on the top of the scum tank.

Description

Flotation pool scraper device

Technical field

The utility model relates to the technical field of wastewater treatment and environmental protection equipment, in particular to an air flotation pool scraper device.

Background technique

The air flotation machine is a dissolved air system that generates a large number of fine bubbles in the water, causing the air to adhere to the suspended solid particles in the form of highly dispersed tiny bubbles, resulting in a state where the density is smaller than that of water. It uses the principle of buoyancy to float on the water surface, and then scrapes it. The plate device scrapes off the suspended solid particles to achieve solid-liquid separation of water treatment equipment.

Commonly used scraper devices generally consist of a scraper and a power component that drives the scraper to move. The power component includes a chain, a driving shaft, a passive shaft, and a drive motor. The driving shaft and the passive shaft are respectively rotatably connected to the two opposite ends of the upper part of the air flotation tank; sprockets are respectively provided at both ends of the driving shaft and the passive shaft, and two closed-loop chains are matched with two pairs of sprockets respectively; a number of scrapers are aligned with the chains. Vertical and evenly distributed on the closed ring formed by the entire chain; the drive motor drives the driving shaft and sprocket, which in turn drives the two chains to move synchronously. The scraper moves with the chain, from one end of the bottom of the chain ring to the other end, and then around The opposite end sprocket runs back and forth from the top back to the starting end; the scraper travels from one end to the other under the chain ring, with a part of the scraper below the liquid level, used to scrape off the float on the liquid surface of the flotation tank. Scum.

However, the existing scraper device cannot adjust the height of the scraper when scraping suspended particles. Because the liquid level of the scum tank in the air flotation tank will change due to the influence of the water flow rate, when the liquid level is too high, the float will When the slag baffle is scraping scum, there will be a phenomenon of scraping out a large amount of liquid; when the liquid level is low, less scum is scraped off in a single time, the accumulation and deposition of suspended solid particles, and the scraping efficiency is low. Affects the speed of wastewater treatment.

Utility model content

The main purpose of this utility model is to provide an air flotation tank scraper device to solve the problem in the prior art that the scraper device cannot adjust the height according to the liquid level, resulting in low removal efficiency and affecting the wastewater treatment speed of the air flotation machine.

In order to solve the above problems, the present utility model adopts the following technical solutions:

An air flotation tank scraper device, including a plurality of scraper assemblies for scraping suspended particles in the upper part of the air flotation tank and a power assembly that drives the scraper assembly to move. The scraper assembly includes a first scraper and a vertical sliding device. A second scraper on one side of the first scraper. The first scraper and the second scraper are connected through a linkage mechanism. One end of the linkage mechanism away from the second scraper is fixedly arranged. For the floating ball that adjusts the sliding position of the second scraper, the lowest end of the floating ball is higher than the lowest end of the second scraper.

Further, the link mechanism includes a first link and a second link. One end of the first link is rotatably connected to the upper part of the first scraper, and the other end of the first link is connected to the upper part of the first scraper. The float ball is fixedly connected, one end of the second connecting rod is rotationally connected to the upper part of the second scraper, and the other end of the second connecting rod is rotationally connected to the first connecting rod and is located on the first scraper. between the plate and the float.

Further, the floating ball and the free end of the first connecting rod are fixedly connected through a connecting post.

Further, the central axis of the connecting column is connected to the central axis of the first connecting rod at an obtuse angle, and the direction of its inner angle is away from the second scraper.

Furthermore, there are multiple link mechanisms, and the plurality of link mechanisms are spaced apart along the length direction of the first scraper.

Further, both ends of the first scraper in the length direction are provided with chute grooves, and both ends of the second scraper plate in the length direction are slidably connected in the corresponding chute grooves.

Further, the second scraper is located on the opposite side of the moving direction of the first scraper.

Furthermore, the lower part of the second scraper is made of rubber material.

The beneficial effects of this utility model are:

1. The floating ball drives the second sliding plate to move toward the liquid level of the air flotation pool through the linkage mechanism. Since the lowest end of the floating ball is higher than the lowest end of the second scraper, it is ensured that part of the second scraper is always inserted. below the liquid level to better clean the scum floating on the top of the scum tank;

2. The second scraper is slidably connected to the side opposite to the movement direction of the first scraper, so that when the second scraper discharges slag and moves around the sprocket to the upper part of the sprocket, the ball floats due to gravity. The linkage mechanism is driven to rotate, causing the second scraper to slide above the first scraper. At this time, the relative movement of the first scraper and the second scraper can scrape off the scum adhered to the second scraper, thus achieving Each time the second scraper scrapes off the scum on the water surface, the first scraper automatically cleans the second scraper to prevent the scum adhering to the second scraper from falling to the cleaned water surface and causing pollution and improve work efficiency.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific implementation modes.

Figure 1 is a perspective view of the air flotation pool scraper device of the present utility model;

Figure 2 is a schematic diagram of the internal structure of the air flotation tank scraper device of the present invention;

Figure 3 is an enlarged view of part A of Figure 2.

Explanation of reference signs

1. Air flotation tank; 11. Baffle; 12. Scum tank; 13. Slag discharge tank; 2. Scraper assembly; 21. First scraper; 211. Chute; 22. Second scraper; 23. Connector Rod mechanism; 231. First connecting rod; 232. Second connecting rod; 24. Float; 25. Connecting column; 3. Chain; 4. Sprocket; 5. Driving shaft; 6. Passive shaft; 7. Driving motor .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described here. Those skilled in the art can implement the utility model without violating the connotation of the present utility model. Similar generalizations are made under different circumstances, so the present utility model is not limited by the specific embodiments disclosed below.

Referring to Figures 1 to 3, an air flotation tank scraper device is provided on the upper part of the air flotation tank 1 and is used to scrape away scum on the surface of the air flotation tank 1. A vertical baffle is installed in the air flotation tank 1. 11. Divide the air flotation tank 1 into a scum tank 12 and a slag discharge tank 13. The air flotation tank scraper device includes a scraper assembly 2 and a power assembly that drives the scraper assembly 2 to move. The power assembly includes a chain 3, a sprocket 4, an active The shaft 5, the driven shaft 6, and the driving motor 7, the driving shaft 5 and the driven shaft 6 are respectively rotatably connected to the two opposite ends of the upper part of the air flotation tank 1, that is, one end is set above the slag discharge tank 13, and the other end is set above the scum. Above the groove 12, sprockets 4 are respectively fixed at both ends of the driving shaft 5 and the passive shaft 6. Two closed-loop chains 3 are respectively matched with two pairs of sprockets 4. The opposite surfaces of the two chains 3 are the inner sides. The scraper assembly 2. The inner surfaces of two chains 3 are respectively fixed at both ends in the length direction, and are perpendicular to the direction of the chain 3. Multiple scraper assemblies 2 are evenly distributed on the closed ring formed by the entire chain 3, and the driving motor 7 is used to drive the active chain 3. The shaft 5 and the sprocket 4 then drive the two chains 3 to move synchronously. The scraper assembly 2 moves with the chain 3, from one end of the bottom of the chain 3 ring to the other end, and then bypasses the opposite sprocket 4 and returns from the top. The starting end is used to scrape off the scum on the liquid surface of the air flotation tank 1 by reciprocating in sequence.

The scraper assembly 2 includes a first scraper 21 and a second scraper 22. The first scraper 21 is vertically slidably connected to one side of the first scraper 21. In this embodiment, both ends of the first scraper 21 in the length direction A chute 211 is provided, and both ends of the second scraper 22 in the length direction are slidably connected in the corresponding chute 211. The first scraper 21 and the second scraper 22 are connected through a linkage mechanism 23, and the linkage mechanism 23 is away from each other. A floating ball 24 for adjusting the sliding position of the second scraper 22 is fixedly provided at one end of the second scraper 22 .

The link mechanism 23 includes a first link 231 and a second link 232. One end of the first link 231 is rotatably connected to the upper part of the first scraper 21, and the other end of the first link 231 is fixedly connected to the float 24. One end of the second connecting rod 232 is rotationally connected to the upper part of the second scraper 22 , and the other end of the second connecting rod 232 is rotationally connected to the first connecting rod 231 and is located between the first scraper 21 and the float 24 .

In this embodiment, the floating ball 24 and the free end of the first connecting rod 231 are fixedly connected through the connecting post 25 . Preferably, the central axis of the connecting column 25 is connected to the central axis of the first connecting rod 231 at an obtuse angle, and the inner angle of the obtuse angle is directed away from the second scraper 22 to facilitate the floating ball 24 to drive the first connecting rod 231 after contacting the liquid surface. , the second connecting rod 232 rotates, and then the position of the second scraper 22 is quickly adjusted.

Preferably, there are multiple link mechanisms 23 (not shown in the figure), and the multiple link mechanisms 23 are spaced apart along the length direction of the first scraper 21 so as to make the moving position of the second scraper 22 more accurate and at the same time This prevents the float ball 24 from being damaged, causing the second scraper 22 to be positioned low and scraping out a large amount of liquid, which affects production efficiency.

Preferably, the second scraper 22 is slidably connected to the side opposite to the moving direction of the first scraper 21 , that is, the second scraper 22 is slidably connected to the back side of the first scraper 21 in the moving direction. In this embodiment, the second scraper 22 is slidably connected to the side opposite to the moving direction of the first scraper 21 . 22 is made of rubber, or the lower part of the second scraper 22 is made of rubber, because the second scraper 22 will contact the baffle 11 when it is close to the baffle 11, and then push the accumulated scum into the slag discharge tank 13 The second scraper 22 is made of flexible rubber material to facilitate the second scraper 22 to pass through the baffle 11 and extend the life of the second scraper 22 .

When the utility model is implemented, the driving motor 7 is started, and the driving motor 7 drives the driving shaft 5, the driven shaft and the sprocket 4 to rotate in turn, thereby driving the two chains 3 to move synchronously, and the scraper assembly 2 follows the chain 3 from the chain 3 One end of the bottom of the ring (scum tank 12) moves to the other end (scum discharge tank 13). When the scraper assembly 2 is located at the bottom of the chain 3 ring, the float 24 falls downward to the liquid surface due to gravity. At this time, the float 24 The link mechanism 23 is driven to rotate, causing the second scraper 22 to slide downward along the chute 211 of the first scraper 21. Since the lowest end of the float 24 is higher than the lowest end of the second scraper 22, it is ensured that A part of the second scraper 22 is always inserted below the liquid level to better clean the scum floating on the top surface of the scum tank 12. The second scraper 22 is made of rubber to facilitate and better pass through the flotation tank 1. The inner baffle 11 discharges the scum to the slag discharge tank 13, and the second scraper 22 is slidingly connected to the side opposite to the movement direction of the first scraper 21, so that when the second scraper 22 is located in the slag discharge tank 13 above and bypassing the sprocket 4, the floating ball 24 drives the linkage mechanism 23 to rotate due to gravity, causing the second scraper 22 to slide above the first scraper 21. At this time, the first scraper 21 and the second scraper 21 move upward. The relative movement of the plate 22 can scrape off the scum adhered to the second scraper 22, so that every time the second scraper 22 scrapes off the scum on the water surface, the first scraper 21 will move against the second scraper 22. The automatic one-time cleaning effect prevents the scum adhering to the second scraper 22 from falling to the cleaned water surface to cause pollution, thereby reducing the efficiency of the cleaning operation.

The above descriptions are only preferred embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Claims (6)

1. The utility model provides a floatation tank scraper means, includes a plurality of scraper assemblies (2) that are used for striking off suspended solid particle upper portion in floatation tank and is used for driving the power pack that scraper assembly (2) removed, characterized in that, scraper assembly (2) include first scraper blade (21) and vertical slip set up second scraper blade (22) in one side of first scraper blade (21), first scraper blade (21) and second scraper blade (22) are connected through link mechanism (23), link mechanism (23) keep away from the one end of second scraper blade (22) is fixed to be provided with be used for adjusting floater (24) of second scraper blade (22) slip position, the extreme lower extreme of floater (24) is higher than the extreme lower extreme of second scraper blade (22);

the connecting rod mechanism (23) comprises a first connecting rod (231) and a second connecting rod (232), one end of the first connecting rod (231) is rotationally connected with the upper portion of the first scraping plate (21), the other end of the first connecting rod (231) is fixedly connected with the floating ball (24), one end of the second connecting rod (232) is rotationally connected with the upper portion of the second scraping plate (22), the other end of the second connecting rod (232) is rotationally connected to the first connecting rod (231) and located between the first scraping plate (21) and the floating ball (24), and the floating ball (24) is fixedly connected with the free end of the first connecting rod (231) through a connecting column (25).

2. An air flotation tank scraping device according to claim 1, characterized in that the connection of the centre axis of the connecting column (25) with the centre axis of the first connecting rod (231) is arranged at an obtuse angle, the direction of the inner angle of which is directed away from the second scraping plate (22).

3. The air flotation tank scraping device according to claim 1, wherein the number of the link mechanisms (23) is plural, and the plurality of the link mechanisms (23) are arranged at intervals along the length direction of the first scraping plate (21).

4. The air flotation tank scraping device according to claim 1, wherein the two ends of the first scraping plate (21) in the length direction are provided with sliding grooves (211), and the two ends of the second scraping plate (22) in the length direction are connected in the corresponding sliding grooves (211) in a sliding manner.

5. An air flotation tank scraping device according to claim 1, characterized in that the second scraping means (22) is located on the opposite side of the direction of movement of the first scraping means (21).

6. The floatation tank scraper device according to claim 1, wherein the lower part of the second scraper (22) is made of rubber material.