A barrier grille

Abstract

The application discloses an intercepting grid, which is impacted by flowing sewage, so that the force bearing baffle rotates around the central axis, so that the sewage is branched into the range of the intercepting grid, the sewage in the intercepting grid is pushed by the subsequently rotating force bearing baffle and is transferred to one side of the discharge gap, at this time, the sewage in the intercepting grid is gradually discharged from the holes of the horizontal grid and the vertical grid, and the impurities in the sewage are retained and discharged from the discharge gap under the pushing of the force bearing baffle. Meanwhile, the cleaning layer I and the cleaning layer II are arranged on the two surfaces of the force bearing baffle in contact with the vertical grid and the horizontal grid, so that the force bearing baffle can clean the intercepting grid through the cleaning layer I and the cleaning layer II during rotation, and the clogging problem of the intercepting grid is reduced.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to an interception grid. Background Technology

[0002] Interception screens are key pretreatment devices in water treatment systems. Their core function is to use physical barriers to intercept solid debris (such as plastics, fibers, branches, sand, etc.) in the water, preventing subsequent equipment (such as pumps, valves, membrane modules) from clogging or wearing out.

[0003] Existing interception screens, while effective in blocking solid debris in water, require frequent shutdowns of the wastewater treatment system for cleaning. Otherwise, over long periods of operation, highly adhesive solid impurities can easily clog the screens. Furthermore, the intercepted solid impurities also require regular manual removal to prevent a large accumulation of them in front of the screens, which not only causes blockages but also exacerbates air pollution. Although rotary screens exist, which use a drive device to rotate rake teeth to grab and remove impurities, these devices are more expensive, suffer from severe mechanical wear, and are not ideal for intercepting fine particles. Utility Model Content

[0004] This application proposes an interception bar that has the advantages of bidirectional sewage treatment and solid impurity interception, water flow driving the force-baffle to rotate and push away solid impurities, and sewage level control scraping component cleaning the force-baffle, in order to solve the problems of impurity clogging and complicated cleaning of existing interception bars.

[0005] To achieve the above objectives, this application adopts the following technical solution: an intercepting bar, comprising a sewage flow channel, the sewage flow channel including a high-level flow channel at the inlet and a low-level flow channel at the outlet; an intercepting bar is provided at the connection between the low-level flow channel and the high-level flow channel; the intercepting bar includes a horizontal bar and a vertical bar vertically arranged on the horizontal bar; a discharge notch is provided on one side of the connection between the high-level flow channel and the low-level flow channel; a central shaft is provided at the center of the connection between the low-level flow channel and the high-level flow channel, and circumferentially distributed force-bearing baffles are provided on the central shaft, the cross-section of the force-bearing baffles being arc-shaped, the concave surface of the arc being opposite to the direction of water flow; a scraping component is provided on the concave surface of the force-bearing baffles.

[0006] Preferably, the depth of the high-level flow channel is less than the depth of the low-level flow channel, and the connection between the high-level flow channel and the low-level flow channel is a right-angle fault pattern.

[0007] Preferably, the high-level flow channel has an inclined surface on the side near the discharge gap, and the end of the inclined surface near the force baffle is closer to the center of the high-level flow channel than the other end.

[0008] Preferably, the top end of the horizontal grille is flush with the bottom end of the high-level flow channel, and the vertical grille is arc-shaped.

[0009] Preferably, a cleaning layer I is provided on the side of the force-bearing baffle away from the central axis, and a cleaning layer II is provided at the bottom end of the force-bearing baffle.

[0010] Preferably, an arc-shaped entry baffle is provided at one end of the inclined surface near the force-baffle, and the arc length of the entry baffle is greater than the maximum distance between two adjacent force-baffles.

[0011] Preferably, the side of the cleaning layer I away from the central axis is on the same circumferential surface as the inner side of the vertical grid, the bottom end of the cleaning layer II is on the same horizontal surface as the top end of the horizontal grid, and the inner wall of the inlet baffle is on the same circumferential surface as the inner side of the vertical grid.

[0012] Preferably, the scraping assembly includes a buoyancy airbag, reciprocating rods symmetrically arranged at the top of the buoyancy airbag, and a scraper disposed on the buoyancy airbag and attached to a force-bearing baffle.

[0013] Preferably, two symmetrical positioning cylinders are provided on the top of the concave side of the force-bearing baffle. The positioning cylinders are movably sleeved on the outside of the reciprocating rod, and a limit ring is provided at the top of the reciprocating rod.

[0014] The present application provides an interception bar that uses flowing sewage to impact a force-bearing baffle, causing the baffle to rotate around its central axis. This causes the sewage to flow into the interception bar in separate streams. The sewage inside the interception bar is then pushed by the subsequently rotating force-bearing baffle towards the discharge opening. At this point, the sewage inside the interception bar gradually flows out through the holes of the horizontal and vertical bar screens, while impurities in the sewage are retained and discharged through the discharge opening under the push of the force-bearing baffle.

[0015] Meanwhile, by setting cleaning layer I and cleaning layer II on the two sides of the force-bearing baffle that contact the vertical and horizontal grids respectively, the force-bearing baffle can clean the interception grid through cleaning layer I and cleaning layer II during rotation, thereby reducing the clogging problem of the interception grid.

[0016] Meanwhile, by installing scraping components on the side of the baffle, after the baffle enters the sewage flow channel, the buoyancy airbag will drive the scraper to rise under buoyancy, scraping and cleaning the side of the baffle upwards. As the water level in the intercepting grid gradually decreases, the scraper will drive the buoyancy airbag to gradually descend under its own weight, scraping and cleaning the side of the baffle downwards. This avoids a large amount of impurities adhering to the baffle, causing the outer shape of the baffle to change, its weight to increase excessively, and the problem that the flowing sewage cannot effectively drive the baffle to rotate. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0018] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram showing the location of the intercepting grid structure in this utility model; Figure 4 This is a schematic diagram of the sewage flow channel structure in this practical application; Figure 5 This is a schematic diagram showing the location of the load-bearing baffle structure in this practical application; Figure 6 This is a schematic diagram showing the structural location of the scraping component in this utility model.

[0019] The components are: 1. Sewage channel; 2. High-level channel; 21. Inclined surface; 22. Low-level channel; 3. Discharge notch; 31. Inlet baffle; 4. Horizontal bar; 41. Vertical bar; 5. Central shaft; 6. Force-bearing baffle; 61. Cleaning layer I; 62. Cleaning layer II; 63. Positioning cylinder; 7. Buoyancy airbag; 71. Scraper; 8. Reciprocating rod; 81. Limiting ring. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Example 1 Please see Figures 1 to 4 An intercepting grille includes a sewage flow channel 1, which includes a high-level flow channel 2 on the inlet side and a low-level flow channel 22 on the outlet side.

[0022] See Figures 1 to 4 The depth of the high-level flow channel 2 is less than the depth of the low-level flow channel 22. The connection between the high-level flow channel 2 and the low-level flow channel 22 is a right-angle fault. When the sewage flows from the high-level flow channel 2 to the low-level flow channel 22, the flow direction of the sewage will change due to the height difference formed at the fault.

[0023] See Figures 1 to 4An intercepting grid is fixedly fitted at the connection between the low-level flow channel 22 and the high-level flow channel 2. The intercepting grid is close to both ends of the two side walls of the low-level flow channel 22 and is fixedly connected to the two side walls of the low-level flow channel 22 respectively, so that the sewage flowing in the high-level flow channel 2 must pass through the intercepting grid before entering the low-level flow channel 22.

[0024] See Figures 1 to 3 , Figure 5 The interception screen includes a horizontal screen 4 and a vertical screen 41 set on the horizontal screen 4. When sewage passes through the horizontal screen 4, it will form a waterfall-like flow channel 22 that falls downwards. Sewage passing through the vertical screen 41 will form a water curtain of different heights on the vertical screen 41 before falling into the lower flow channel 22. This causes the sewage to be dispersed and separated, come into contact with a large amount of air, promote microbial metabolism, pollutant degradation and water quality improvement.

[0025] See Figures 1 to 3 , Figure 5 The horizontal bar 4 is fan-shaped, and the top of the horizontal bar 4 is level with the bottom of the high-level flow channel 2, so that the sewage flowing in the high-level flow channel 2 will not directly enter the low-level flow channel 22.

[0026] See Figures 1 to 3 , Figure 5 The vertical grille 41 is arc-shaped.

[0027] See Figures 1 to 4 A discharge notch 3 is provided on one side of the connection between the high-level flow channel 2 and the low-level flow channel 22, so that solid impurities pushed out of the interception grid by the force baffle 6 can be discharged through the discharge notch 3.

[0028] See Figures 1 to 2 , Figure 5 A central shaft 5 is movably connected at the connection center between the low-level flow channel 22 and the high-level flow channel 2, and a circumferentially distributed force-bearing baffle 6 is fixedly connected to the central shaft 5.

[0029] See Figures 1 to 2 , Figures 5 to 6 The cross-section of the force-baffle 6 is arc-shaped, and the concave surface of the arc is opposite to the direction of water flow, so that the sewage flowing in the high-level flow channel 2 can impact the concave surface of the force-baffle 6, pushing the force-baffle 6 to rotate in the direction of water flow with the central axis 5 as the base point.

[0030] See Figures 1 to 4 An inclined surface 21 is provided on the side of the high-level flow channel 2 near the discharge gap 3. The end of the inclined surface 21 near the force baffle 6 is closer to the center of the high-level flow channel 2 than the other end. This causes the sewage flowing in the high-level flow channel 2 to converge and flow faster due to the space gradually narrowed in the direction of movement by the inclined surface 21, thereby increasing the impact force on the force baffle 6.

[0031] See Figures 1 to 2 , Figures 5 to 6 A cleaning layer I 61 is fixedly connected to the side of the force-bearing baffle 6 away from the central axis 5, and a cleaning layer II 62 is fixedly connected to the bottom end of the force-bearing baffle 6.

[0032] See Figures 1 to 2 , Figures 5 to 6 The side of cleaning layer I 61 away from the central axis 5 is on the same circumferential surface as the inner side of the vertical grid 41. This allows cleaning layer I 61 to clean the inner wall of the vertical grid 41 facing the central axis 5 when the force baffle 6 rotates into the range of the vertical grid 41. At the same time, the sewage is also transferred by the force baffle 6 into the range of the vertical grid 41, flows out through the holes on the grid, and falls into the lower flow channel 22. The bottom end of cleaning layer II 62 is on the same horizontal plane as the top end of the horizontal grid 4. This allows cleaning layer II 62 to clean the top end of the horizontal grid 4 when the force baffle 6 rotates into the range of the horizontal grid 4.

[0033] It should be noted that when the sewage enters the interception grid area at this time, the solid impurities in it are blocked by the interception grid, and the adjacent force-bearing baffle 6 works with the interception grid to form a relatively sealed space. The solid impurities here will continue to be pushed by the force-bearing baffle 6 until they leave the interception grid area and are discharged from the discharge gap 3.

[0034] See Figures 1 to 4 An arc-shaped inlet baffle 31 is fixedly connected to one end of the inclined surface 21 near the force-baffle 6. The other end of the inlet baffle 31 is far from the center of the high-level flow channel 2. The arc length of the inlet baffle 31 is greater than the maximum distance between two adjacent force-baffles 6. This allows the force-baffle 6 to enter the high-level flow channel 2 again from the discharge gap 3, and then enter the range of the inlet baffle 31. At this time, the force-baffle 6 will close the opening of the inlet baffle 31 near the discharge gap 3. During this process, the force-baffle 6 in front (referring to the front in the rotation direction) will also block the sewage in the high-level flow channel 2 from entering the range of the inlet baffle 31. When the force-baffle 6 that just entered continues to move forward, it will push the sewage that enters later forward, providing empty space for the next force-baffle 6 to enter, thus avoiding a large amount of sewage leakage from the inlet baffle 31 when a new force-baffle 6 enters the range of the inlet baffle 31.

[0035] The inner wall of the entrance baffle 31 and the inner side of the vertical grille 41 are on the same circumferential surface.

[0036] Example 2 Please see Figures 1 to 2 , Figures 5 to 6Based on Embodiment 1, two symmetrical positioning cylinders 63 are fixedly connected to the top of the concave side of the force-bearing baffle 6. A reciprocating rod 8 is movably sleeved inside the positioning cylinder 63. The diameter of the reciprocating rod 8 is equal to the inner diameter of the positioning cylinder 63, so that the positioning cylinder 63 limits the reciprocating rod 8, so that the reciprocating rod 8 can only move up and down.

[0037] See Figures 1 to 2 , Figures 5 to 6 A limiting ring 81 is fixedly connected to the top of the reciprocating rod 8. The diameter of the limiting ring 81 is greater than the inner diameter of the positioning cylinder 63, so that when the reciprocating rod 8 falls, the limiting ring 81 can abut against the positioning cylinder 63, preventing the reciprocating rod 8 from detaching from the positioning cylinder 63.

[0038] The length of the reciprocating rod 8 is greater than the height of the force-bearing baffle 6, so that the scraper 71 can effectively scrape away impurities from the entire concave surface of the force-bearing baffle 6.

[0039] See Figures 1 to 2 , Figures 5 to 6 A buoyancy airbag 7 is fixedly connected to the bottom end of the reciprocating rod 8. A scraper 71 is fixedly connected to the side of the buoyancy airbag 7 near the force-baffle 6. The side of the scraper 71 facing the force-baffle 6 is in contact with the force-baffle 6. After the force-baffle 6 enters the sewage flow channel 1, the buoyancy airbag 7 will drive the scraper 71 to rise under buoyancy, scraping and cleaning the side of the force-baffle 6 upwards. When the water level in the intercepting grid gradually drops, the scraper 71 will drive the buoyancy airbag 7 to gradually descend under its own weight, scraping and cleaning the side of the force-baffle 6 downwards. This avoids a large amount of impurities adhering to the force-baffle 6, causing the outer shape of the force-baffle 6 to change, its own weight to increase excessively, and the problem that the flowing sewage cannot effectively push the force-baffle 6 to rotate.

[0040] It should be noted that the above-mentioned scraper 71-related structure can also be set on the convex surface of the force-bearing baffle 6 to clean the convex surface.

Claims

1. An interception grille, characterized in that, It includes a sewage flow channel (1), which includes a high-level flow channel (2) at the inlet and a low-level flow channel (22) at the outlet. An intercepting grille is provided at the connection between the low-level flow channel (22) and the high-level flow channel (2); The interception grille includes a horizontal grille (4) and a vertical grille (41) set on the horizontal grille (4). A discharge notch (3) is provided on one side of the connection between the high-level flow channel (2) and the low-level flow channel (22); A central shaft (5) is provided at the connection center between the low-level flow channel (22) and the high-level flow channel (2). A force-bearing baffle (6) is provided on the central shaft (5) with circumferentially distributed baffles (6). The cross-section of the force-bearing baffle (6) is arc-shaped, and the concave surface of the arc is opposite to the direction of water flow. A scraping component is provided on the concave surface of the force-bearing baffle (6).

2. The interception grille according to claim 1, characterized in that, The depth of the high-level flow channel (2) is less than the depth of the low-level flow channel (22), and the connection between the high-level flow channel (2) and the low-level flow channel (22) is a right-angle fault.

3. The interception grille according to claim 2, characterized in that, The high-level flow channel (2) has an inclined surface (21) on one side near the discharge gap (3), and the end of the inclined surface (21) near the force baffle (6) is closer to the center of the high-level flow channel (2) than the other end.

4. The interception grille according to claim 1, characterized in that, The top of the horizontal grille (4) is level with the bottom of the high-level flow channel (2), and the vertical grille (41) is arc-shaped.

5. The interception grille according to claim 3, characterized in that, A cleaning layer I (61) is provided on the side of the force-bearing baffle (6) away from the central axis (5), and a cleaning layer II (62) is provided at the bottom end of the force-bearing baffle (6).

6. The interception grille according to claim 5, characterized in that, An arc-shaped entry baffle (31) is provided at one end of the inclined surface (21) near the force baffle (6), and the arc length of the entry baffle (31) is greater than the maximum distance between two adjacent force baffles (6).

7. The interception grille according to claim 6, characterized in that, The side of the cleaning layer I (61) away from the central axis (5) is on the same circumferential surface as the inner side of the vertical grid (41), the bottom end of the cleaning layer II (62) is on the same horizontal surface as the top end of the horizontal grid (4), and the inner wall of the entry baffle (31) is on the same circumferential surface as the inner side of the vertical grid (41).

8. The interception grille according to claim 1, characterized in that, The scraping assembly includes a buoyancy airbag (7), a reciprocating rod (8) symmetrically arranged at the top of the buoyancy airbag (7), and a scraper (71) arranged on the buoyancy airbag (7) and attached to the force baffle (6).

9. An interception grille according to claim 8, characterized in that, Two symmetrical positioning cylinders (63) are provided on the top of the concave side of the force-bearing baffle (6). The positioning cylinders (63) are movably sleeved on the outside of the reciprocating rod (8). A limit ring (81) is provided at the top of the reciprocating rod (8).

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