Slag guide groove of air flotation equipment

Abstract

The utility model relates to the technical field of sewage treatment, and particularly discloses a slag guide groove of air floatation equipment, which comprises a groove body, the groove body consists of a flow guide section, a collection section and a slag discharge section which are arranged along the length direction, the upper end surface of the flow guide section is communicated with a liquid inlet, the bottom end of the collection section is provided with a filter plate, and the slag discharge section is communicated with the liquid inlet. An adjustable scum stopping structure is arranged in the collecting section, scum overflows through the top end of a scum stopping weir plate from the flow guide section along with water flow and enters the collecting section, liquid is discharged through a bottom filter plate, the scum is intercepted above the filter plate, the scum stopping weir plate and the bottom filter plate form an up-and-down cooperation structure, the scum is intercepted by the scum stopping weir plate, and the scum is separated from the bottom filter plate. The filter plate filters residual liquid, the slag-liquid separation efficiency is improved, and the device can adapt to working conditions with different slag contents by adjusting the height of the slag blocking weir plate.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and specifically discloses a slag guide trough for an air flotation device. Background Technology

[0002] In the dissolved air flotation equipment, the wastewater undergoing dissolved air reaction will produce scum. The scum is scraped into the scum guide trough by the scum scraping unit and finally discharged from the scum discharge port at the bottom of the scum guide trough.

[0003] Chinese Patent No. CN219546752U discloses a slag guide channel for an air flotation device, comprising a slag guide channel whose width is greater than the width of the air flotation tank. When installed in the tank, one end of the slag guide channel penetrates the side wall of the tank. It also includes a scraper, a drive unit, a water collection trough, and a slag discharge hopper. The scraper is positioned within the slag guide channel and moves along its length under the action of the drive unit. A rubber scraper strip is installed at the bottom of the scraper. The water collection trough and slag discharge hopper are respectively installed at the bottom of the slag guide channel. The water collection trough is located inside the air flotation tank, and the slag discharge hopper is located outside the tank. The bottom plate of the slag guide channel has a slag discharge port communicating with the slag discharge hopper and filter holes communicating with the water collection trough. This invention overcomes the shortcomings of the prior art, has a reasonable design, a compact structure, and effectively solves the technical problems of slag moisture content and slag pressure filtration cost.

[0004] The aforementioned document relies solely on a single filtration structure (such as a flat grid), making it difficult to effectively separate the liquid entrained in the scum. This results in liquid backflow carrying scum particles, affecting the separation effect. Furthermore, the lack of a high-pressure rinsing structure for the filter plate prevents timely cleaning of the scum trapped on the filter plate. Therefore, a scum guide channel for an air flotation device is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a slag guide channel for an air flotation device, which forms an "upper and lower collaborative" structure with the slag-blocking weir plate and the filter plate to improve the slag-liquid separation efficiency. Furthermore, by adjusting the height of the slag-blocking weir plate, it can adapt to different slag content conditions. Additionally, high-pressure flushing prevents the filter plate from clogging.

[0006] This utility model is implemented as follows: a slag guide tank for an air flotation device includes a tank body, which is composed of a guide section, a collection section and a slag discharge section arranged along the length direction. The upper end face of the guide section is connected to a liquid inlet, the bottom end of the collection section is equipped with a filter plate, the inside of the collection section is provided with an adjustable slag blocking structure, and the front sides of the inner wall of the collection section are provided with a flushing structure.

[0007] The adjustable slag-blocking structure includes a fixed plate disposed inside the collection section, a slag-blocking weir plate inserted inside the fixed plate, a threaded rod rotatably connected to the front of the upper surface of the fixed plate and threadedly connected to the slag-blocking weir plate, and a sliding rod fixedly connected to the rear of the upper surface of the fixed plate and slidably connected to the slag-blocking weir plate. The other end of the threaded rod passes through and extends to the outside of the collection section.

[0008] The flushing structure includes a high-pressure flushing pipe installed on the inner wall of the collection section and a nozzle connected to the outer wall of the high-pressure flushing pipe. The water outlet direction of the nozzle is inclined to the filter plate.

[0009] In a preferred embodiment of the slag guide trough of the air flotation device of this utility model, the bottom end of the guide section is inclined, and an arc-shaped guide plate is installed on the inner wall of the guide section.

[0010] As a preferred embodiment of the slag guide trough of the air flotation device of this utility model, the bottom end of the slag discharge section is provided with a funnel-shaped slag discharge port, and a pneumatic slag discharge valve is installed on the outer wall of the slag discharge port.

[0011] As a preferred embodiment of the slag guide channel of the air flotation device of this utility model, a mounting groove is provided on one side of the fixing plate, and a push plate is inserted into the inside of the mounting groove.

[0012] In a preferred embodiment of the slag guide trough of the flotation device of this utility model, a sealing baffle extending to the top of the collection section is installed between the collection section and the slag discharge section. A sealing gasket is installed on the bottom outer wall of the sealing baffle, and a scraper that abuts against the sealing baffle is provided at the top of the inner wall of the collection section.

[0013] In a preferred embodiment of the slag guide trough of the flotation device of this utility model, the guide section and the collection section are connected by a flange.

[0014] In a preferred embodiment of the slag guide trough of the flotation device of this utility model, the top of the collection section is provided with a sealing cover.

[0015] The beneficial effects of this utility model are:

[0016] 1. The scum flows from the guide section and overflows over the top of the scum-blocking weir plate into the collection section. The liquid is discharged through the bottom filter plate, while the scum is trapped above the filter plate. The scum-blocking weir plate and the bottom filter plate form a "top-bottom cooperative" structure. The scum-blocking weir plate intercepts the scum, and the filter plate filters the residual liquid, improving the scum-liquid separation efficiency. Moreover, by adjusting the height of the scum-blocking weir plate, it can adapt to different scum content conditions.

[0017] 2. The tilted nozzles spray water from the high-pressure flushing pipe onto the filter plate, thus preventing the filter plate from clogging through high-pressure flushing. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a front sectional view of the slag guide trough of an air flotation device according to this utility model.

[0020] Figure 2 This is a structural diagram of the internal structure of the collecting section of this utility model.

[0021] Figure 3 This is a diagram of the adjustable slag-blocking structure of this utility model.

[0022] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A

[0023] The markings in the diagram are as follows: 1. Guide section; 101. Liquid inlet; 102. Arc-shaped guide plate; 2. Collection section; 201. Scraper; 202. Sealing baffle; 203. Filter plate; 3. Fixing plate; 301. Slag-blocking weir plate; 302. Threaded rod; 303. Sliding rod; 304. Installation groove; 4. Push plate; 5. Slag discharge section; 501. Slag discharge port; 6. High-pressure flushing pipe; 601. Nozzle. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Please see Figure 1-4 A slag guide tank for an air flotation device includes a tank body, which is composed of a guide section 1, a collection section 2 and a slag discharge section 5 arranged along the length direction. The upper end face of the guide section 1 is connected to a liquid inlet 101. A filter plate 203 is installed at the bottom end of the collection section 2. An adjustable slag blocking structure is provided inside the collection section 2. A flushing structure is provided on both sides of the front end of the inner wall of the collection section 2.

[0026] The adjustable slag-blocking structure includes a fixed plate 3 disposed inside the collection section 2, a slag-blocking weir plate 301 inserted inside the fixed plate 3, a threaded rod 302 rotatably connected to the front of the upper end face of the fixed plate 3 and threadedly connected to the slag-blocking weir plate 301, and a sliding rod 303 fixedly connected to the rear of the upper end face of the fixed plate 3 and slidably connected to the slag-blocking weir plate 301. The other end of the threaded rod 302 passes through and extends to the outside of the collection section 2.

[0027] The flushing structure includes a high-pressure flushing pipe 6 installed on the inner wall of the collection section 2 and a nozzle 601 connected to the outer wall of the high-pressure flushing pipe 6. The water outlet direction of the nozzle 601 is inclined to the filter plate 203.

[0028] In this embodiment: Wastewater containing scum enters the guide section 1 through the inlet 101. The scum overflows from the guide section 1 with the water flow, passing over the top of the scum-blocking weir plate 301 and entering the collection section 2. The scum briefly stays in the collection section 2, while the liquid is discharged through the bottom filter plate 203. The scum is trapped above the filter plate 203. The scum-blocking weir plate 301 and the bottom filter plate 203 form a "top-bottom cooperative" structure. The scum-blocking weir plate 301 intercepts the scum, and the filter plate 203 filters the residual liquid, improving the scum-liquid separation efficiency. By rotating the threaded rod 302, the slag-blocking weir plate 301 moves up or down on the outer wall of the threaded rod 302 and the sliding rod 303, adjusting the height of the slag-blocking weir plate 301. When the amount of slag is small, the height of the slag-blocking weir plate 301 is lowered (reducing the liquid level in the collection section 2), accelerating the discharge of slag and avoiding excessive accumulation. When the amount of slag is large, the height of the slag-blocking weir plate 301 is raised (increasing the liquid level in the collection section 2), increasing the temporary storage capacity of slag in the collection section 2 and preventing overflow. Thus, the slag-blocking weir plate 301 can adapt to different slag content conditions.

[0029] Connect the high-pressure flushing pipe 6 to an external water source so that the inclined nozzle 601 sprays the water in the high-pressure flushing pipe 6 onto the filter plate 203. This high-pressure flushing can prevent the filter plate 203 from becoming clogged.

[0030] As a technical optimization of this utility model, the bottom end of the guide section 1 is inclined, and an arc-shaped guide plate 102 is installed on the inner wall of the guide section 1.

[0031] In this embodiment: the bottom end of the guide section 1 is inclined, so that the scum can slide naturally towards the collection section 2 under the action of gravity, and the arc-shaped surface of the arc-shaped guide plate 102 can guide the scum to flow in a concentrated manner.

[0032] As a technical optimization of this utility model, the bottom end of the slag discharge section 5 is provided with a funnel-shaped slag discharge port 501, and a pneumatic slag discharge valve is installed on the outer wall of the slag discharge port 501.

[0033] In this embodiment: the pneumatic slag discharge valve is opened, and the floating slag accumulated in the collection section 2 can be discharged through the funnel-shaped slag discharge port 501.

[0034] As a technical optimization of this utility model, a mounting groove 304 is provided on one side of the fixing plate 3, and a push plate 4 is inserted into the mounting groove 304.

[0035] In this embodiment: Hold the push plate 4 and push it to the right (the push plate 4 is not fixed to the mounting groove 304, so the push plate 4 can be pushed directly to the right without pulling it out and pushing it again), so that the push plate 4 pushes the scum accumulated on the filter plate 203 into the scum discharge section 5.

[0036] As a technical optimization of this utility model, a sealing baffle 202 extending to the top of the collecting section 2 is installed between the collecting section 2 and the slag discharge section 5. A sealing gasket is installed on the bottom outer wall of the sealing baffle 202, and a scraper 201 that abuts against the sealing baffle 202 is provided at the top of the inner wall of the collecting section 2.

[0037] In this embodiment: Pulling the sealing baffle 202 upward connects the collection section 2 and the slag discharge section 5, thereby allowing the scum that has been filtered and retained in the collection section 2 to be discharged from the slag discharge section 5. As the sealing baffle 202 moves upward, the scum adhering to the left side of the sealing baffle 202 can be scraped off by the scraper 201.

[0038] As a technical optimization of this utility model, the guide section 1 and the collection section 2 are connected by a flange.

[0039] In this embodiment, the guide section 1 and the collection section 2 are connected by a flange, which facilitates the disassembly and maintenance of the guide section 1 and the collection section 2.

[0040] As a technical optimization of this utility model, a sealing cap is provided at the top of the collecting section 2.

[0041] In this embodiment: the sealing cover is opened to facilitate the removal of the pusher plate 4 from the collection section 2.

[0042] The working principle and usage process of this utility model are as follows: Open the sealing cover, remove the push plate 4 from the collection section 2, and then replace the sealing cover. This allows the wastewater containing scum to enter the guide section 1 through the inlet 101. The scum overflows from the guide section 1 with the water flow, passing over the top of the scum-blocking weir plate 301 and entering the collection section 2. The scum briefly stays in the collection section 2, and the liquid is discharged through the bottom filter plate 203. The scum is trapped above the filter plate 203. The scum-blocking weir plate 301 and the bottom filter plate 203 form a "top-bottom cooperative" structure. The scum-blocking weir plate 301 intercepts the scum, and the filter plate 203... 03. Filtering residual liquid improves slag-liquid separation efficiency. By rotating the threaded rod 302, the slag-blocking weir plate 301 moves up or down on the outer wall of the threaded rod 302 and the sliding rod 303, adjusting the height of the slag-blocking weir plate 301. When the amount of slag is small: lower the height of the slag-blocking weir plate 301 (reduce the liquid level in the collection section 2), accelerate the discharge of slag, and avoid excessive accumulation. When the amount of slag is large: raise the height of the slag-blocking weir plate 301 (increase the liquid level in the collection section 2), increase the temporary storage capacity of slag in the collection section 2, and prevent overflow. Thus, the slag-blocking weir plate 301 can adapt to different slag content conditions.

[0043] Pull the sealing baffle 202 upward to connect the collection section 2 and the slag discharge section 5, so that the accumulated slag can fall into the slag discharge section 5. The slag at the bottom can be pushed into the slag discharge section 5 by opening the sealing cover at the top of the collection section 2, holding the push plate 4 and pushing the push plate 4 towards the slag discharge section 5. The slag adhering to the bottom can be pushed into the slag discharge section 5 by the push plate 4 and discharged from the slag discharge port 501.

[0044] Connect the high-pressure flushing pipe 6 to an external water source so that the inclined nozzle 601 sprays the water in the high-pressure flushing pipe 6 onto the filter plate 203. This high-pressure flushing can prevent the filter plate 203 from becoming clogged.

[0045] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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.

[0046] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A slag guide tank for an air flotation device, comprising a tank body, characterized in that: The tank is composed of a guide section (1), a collection section (2) and a slag discharge section (5) arranged along the length direction. The upper end face of the guide section (1) is connected to the liquid inlet (101). The bottom end of the collection section (2) is equipped with a filter plate (203). The inside of the collection section (2) is provided with an adjustable slag blocking structure. The front sides of the inner wall of the collection section (2) are provided with a flushing structure. The adjustable slag-blocking structure includes a fixed plate (3) disposed inside the collection section (2), a slag-blocking weir plate (301) inserted inside the fixed plate (3), a threaded rod (302) rotatably connected to the front of the upper end face of the fixed plate (3) and threadedly connected to the slag-blocking weir plate (301), and a sliding rod (303) fixedly connected to the rear of the upper end face of the fixed plate (3) and slidably connected to the slag-blocking weir plate (301). The other end of the threaded rod (302) passes through and extends to the outside of the collection section (2). The flushing structure includes a high-pressure flushing pipe (6) installed on the inner wall of the collection section (2) and a nozzle (601) connected to the outer wall of the high-pressure flushing pipe (6). The water outlet direction of the nozzle (601) is inclined to the filter plate (203).

2. The slag guide trough of an air flotation device according to claim 1, characterized in that: The bottom end of the guide section (1) is inclined, and an arc-shaped guide plate (102) is installed on the inner wall of the guide section (1).

3. The slag guide trough of the air flotation equipment according to claim 1, characterized in that: The bottom end of the slag discharge section (5) is provided with a funnel-shaped slag discharge port (501), and a pneumatic slag discharge valve is installed on the outer wall of the slag discharge port (501).

4. The slag guide trough of an air flotation device according to claim 1, characterized in that: The fixing plate (3) has an installation groove (304) on one side, and a push plate (4) is inserted into the installation groove (304).

5. The slag guide trough of an air flotation device according to claim 1, characterized in that: A sealing baffle (202) extending to the top of the collection section (2) is installed between the collection section (2) and the slag discharge section (5). A sealing gasket is installed on the bottom outer wall of the sealing baffle (202), and a scraper (201) that abuts against the sealing baffle (202) is provided at the top of the inner wall of the collection section (2).

6. The slag guide trough of an air flotation device according to claim 1, characterized in that: The guide section (1) and the collection section (2) are connected by a flange.

7. The slag guide trough of an air flotation device according to claim 1, characterized in that: The top of the collection section (2) is provided with a sealing cap.

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