A V-shaped sand filter surface cleaning device

Abstract

This utility model relates to the field of sand filter technology and discloses a V-shaped sand filter surface cleaning device, including a sand filter, a frame fixedly installed on the sand filter, a cylinder fixedly installed on one side of the frame, and the cylinder connected to an external air pump through an air pipe. V-shaped grooves are fixedly installed on both sides of the sand filter, with multiple water outlets opened in the V-shaped grooves. A flushing hole is also opened in the V-shaped groove between two water outlets. A plugging mechanism is also provided inside the V-shaped groove, including a guide rail and multiple first cover plates. The multiple flushing holes in the V-shaped grooves, in conjunction with the plugging mechanism, allow multiple water outlets to be simultaneously plugged and multiple flushing holes to be simultaneously opened during backwashing operations in the sand filter. This reduces the cross-sectional area of ​​a single hole, increases the flow velocity, increases the jet kinetic energy, and enhances the surface cleaning effect. Furthermore, the water curtain sprayed from the flushing holes can expand the cleaning coverage area of ​​a single hole, reduce cleaning blind spots, and ensure that impurities on the filter media surface are evenly cleaned.

Description

Technical Field

[0001] This utility model relates to the field of sand filter technology, and in particular to a V-shaped sand filter surface cleaning device. Background Technology

[0002] V-shaped sand filter is a high-efficiency gravity filter, whose structure includes V-shaped troughs, filter media layer, support layer, water distribution system, etc.

[0003] When filtering water, the filtered water flows evenly into the filter tank through the V-shaped grooves. Impurities are trapped by the sand filter media layer. In addition, the V-shaped sand filter tank can also use a combined air and water backwashing method. First, the air wash loosens the filter media, and then the water flushed out of the V-shaped grooves washes away the dirt. However, the surface cleaning of existing V-shaped sand filters mostly relies on water spraying from a single outlet. During cleaning, the water flow is dispersed and the local pressure is insufficient, which easily forms a scouring blind zone on the surface of the filter media, resulting in the residue of impurities. Utility Model Content

[0004] The purpose of this utility model is to provide a V-shaped sand filter surface cleaning device. By setting flushing holes and plugging mechanisms in the V-shaped groove, the outlet holes are blocked and the flushing holes are opened simultaneously during backwashing. This can reduce the cross-section of a single hole, increase the flow velocity, expand the water curtain coverage, and reduce blind spots, effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A V-shaped sand filter surface cleaning device includes a sand filter, a frame fixedly installed on the sand filter, a cylinder fixedly installed on one side of the frame, and the cylinder connected to an external air pump through an air pipe. V-shaped grooves are fixedly installed on both sides of the sand filter, and multiple water outlets are opened in the V-shaped grooves. A flushing hole is also opened in the V-shaped groove between two water outlets. A hole-blocking mechanism is also provided inside the V-shaped groove. The hole-blocking mechanism includes a guide rail and multiple first cover plates. Multiple sliders are slidably installed on the guide rail. A first connecting plate is fixedly connected between the slider and the corresponding first cover plate. The multiple first cover plates are respectively fixedly connected to the second cover plates through second connecting plates and slidably installed inside the V-shaped groove.

[0007] As a further preferred embodiment of this utility model, the opening height of the flushing hole is higher than the opening height of the water outlet hole.

[0008] As a further preferred embodiment of this utility model, the flushing hole also includes a water inlet channel and an expansion channel, and the transverse cross-section of the water inlet channel and the expansion channel is a funnel-shaped structure. After the multiple water outlet holes are blocked by the hole-blocking mechanism, the flushing hole can be opened simultaneously, so that the sweeping water in the V-shaped groove is sprayed out in a water curtain shape, which can expand the sweeping coverage area of ​​a single hole, reduce the rinsing blind zone, and make the impurities on the surface of the filter material be rinsed evenly.

[0009] As a further preferred embodiment of this utility model, a second connecting plate is arranged between the multiple first cover plates and the second cover plates in sequence at intervals. The second connecting plate is at the same height as the flushing hole, while the second cover plate is at a lower height than the flushing hole. By connecting the multiple first cover plates in sequence at intervals through the second connecting plate, the connection of the multiple first cover plates can be realized, ensuring the synchronous movement of the multiple first cover plates. At the same time, the second connecting plate can also cover the flushing hole.

[0010] As a further preferred embodiment of this utility model, a third connecting plate is fixedly connected between the plurality of first connecting plates. A push plate is fixedly installed at one end of the third connecting plate, and the end of the push plate away from the third connecting plate is fixedly connected to one end of the piston rod of the cylinder. Since one end of the plurality of first connecting plates is fixedly connected to the corresponding slider, the plurality of first connecting plates can be connected by the third connecting plate to cooperate with the cylinder to realize the synchronous movement of the plurality of first cover plates. Thus, after the water outlet is covered, the plurality of flushing holes open synchronously, and conversely, after the flushing hole is covered and closed, the water outlet opens.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, multiple flushing holes are opened in the V-shaped groove. When the hole-blocking mechanism is used for backwashing in the sand filter, multiple water outlet holes are blocked simultaneously and multiple flushing holes are opened simultaneously. This reduces the cross-sectional area of ​​a single hole, increases the flow velocity, increases the jet kinetic energy, and enhances the surface scouring effect. In addition, the water curtain sprayed from the flushing holes can expand the cleaning coverage area of ​​a single hole, reduce the scouring blind zone, and make the impurities on the surface of the filter media be evenly flushed. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure installation of this utility model;

[0014] Figure 2 This is a schematic diagram of the first state of the hole-plugging mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the second state of the plugging mechanism of this utility model;

[0016] Figure 4This is a cross-sectional view of the flushing hole of this utility model;

[0017] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0018] Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0019] In the diagram: 1. Sand filter; 2. Frame; 3. Cylinder; 4. V-groove; 5. Water outlet; 6. Flushing hole; 7. Plug-in mechanism; 8. Guide rail; 9. First cover plate; 10. Slider; 11. First connecting plate; 12. Water inlet channel; 13. Expansion channel; 14. Guide groove; 15. Second connecting plate; 16. Second cover plate; 17. Third connecting plate; 18. Push plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1-6 As shown, the present invention provides a V-shaped sand filter surface cleaning device, including a sand filter 1, a frame 2 fixedly installed on the sand filter 1, a cylinder 3 fixedly installed on one side of the frame 2, and the cylinder 3 connected to an external air pump through an air pipe. V-shaped grooves 4 are fixedly installed on both sides inside the sand filter 1. Multiple water outlet holes 5 are opened in the V-shaped grooves 4. A rinsing hole 6 is also opened in the V-shaped grooves 4 between two water outlet holes 5. A hole blocking mechanism 7 is also provided inside the V-shaped grooves 4. The hole blocking mechanism 7 includes a guide rail 8 and multiple first cover plates 9. Multiple sliders 10 are slidably installed on the guide rail 8. A first connecting plate 11 is fixedly connected between the slider 10 and the corresponding first cover plate 9. The multiple first cover plates 9 are fixedly connected to each other through a second connecting plate 15 and a second cover plate 16 and slidably installed inside the V-shaped grooves 4.

[0022] like Figures 4-5 As shown, the opening height of the flushing hole 6 is higher than that of the water outlet hole 5. The flushing hole 6 also includes a water inlet channel 12 and an expansion channel 13. The transverse cross-section of the water inlet channel 12 and the expansion channel 13 is a funnel-shaped structure. After the multiple water outlet holes 5 are blocked by the hole blocking mechanism 7, the flushing hole 6 can be opened simultaneously, so that the sweeping water in the V-shaped groove 4 is sprayed out in the form of a water curtain, which can expand the sweeping coverage area of ​​a single hole, reduce the rinsing blind zone, and make the impurities on the surface of the filter media be rinsed evenly.

[0023] like Figures 1-4 , Figure 6As shown, second connecting plates 15 and second cover plates 16 are sequentially and alternately arranged between multiple first cover plates 9. The second connecting plates 15 are at the same height as the flushing hole 6, while the second cover plates 16 are at a lower height than the flushing hole 6. By sequentially and alternately connecting the multiple first cover plates 9 through the second connecting plates 15 and second cover plates 16, the multiple first cover plates 9 can be connected to ensure synchronous movement. At the same time, the second connecting plates 15 can also cover the flushing hole 6. The multiple first connecting plates 11 are fixedly connected. There is a third connecting plate 17, and a push plate 18 is fixedly installed on one end of the third connecting plate 17. The end of the push plate 18 away from the third connecting plate 17 is fixedly connected to one end of the piston rod of the cylinder 3. Since one end of each of the multiple first connecting plates 11 is fixedly connected to the corresponding slider 10, the multiple first connecting plates 11 can be connected by the third connecting plate 17 to cooperate with the cylinder 3 to realize the synchronous movement of multiple first cover plates 9. Thus, after the water outlet 5 is covered, its multiple flushing holes 6 open synchronously, and conversely, after the flushing holes 6 are covered and closed, its water outlet 5 opens.

[0024] It should be noted that this utility model is a V-shaped sand filter surface cleaning device. When backwashing the filter media in the sand filter 1, the cylinder 3 can be started by the external main controller. Then, the cylinder 3 receives power from the external air pump through the air pipe, and the piston rod retracts to drive the push plate 18 to move. The third connecting plate 17 connected to the push plate 18 is linked accordingly, thereby pulling multiple first connecting plates 11 to move synchronously. The slider 10 fixed at one end of the first connecting plate 11 slides along the guide rail 8, and the first cover plate 9 connected to the other end moves horizontally inside the V-shaped groove 4. Since multiple first cover plates 9 are sequentially and intermittently connected to each other through the second connecting plate 15 and the second cover plate 16, multiple The first cover plate 9 moves synchronously inside the V-shaped groove 4, and the bottom of the first cover plate 9 abuts against the guide groove 14, thereby ensuring that the first cover plate 9 stably fits the inner side of the V-shaped groove 4 and moves horizontally. Then, the multiple first cover plates 9 move to the water outlet 5 and block it. The second connecting plate 15 between the first cover plates 9 moves together. Since the second connecting plate 15 is at the same height as the flushing hole 6, the flushing hole 6 is opened after the movement. The water in the V-shaped groove 4 flows in through the water inlet channel 12 of the flushing hole 6, and then forms a water curtain sprayed out through the funnel-shaped expansion channel 13. The water flow speed increases due to the change of the channel cross section, which enhances the flushing force, so that the dirt on the surface of the water in the sand filter tank 1 is flushed into the drainage ditch.

[0025] After the cleaning is completed, the piston rod of cylinder 3 pushes the push plate 18, and the first cover plate 9 moves away from the water outlet 5 to open it. At the same time, the second connecting plate 15 resets to block the flushing hole 6, and the second cover plate 16 assists in sealing to ensure that the water outlet 5 drains normally.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A V-shaped sand filter surface sweeping apparatus, characterized by: The system includes a sand filter (1), on which a frame (2) is fixedly installed. A cylinder (3) is fixedly installed on one side of the frame (2), and the cylinder (3) is connected to an external air pump through an air pipe. V-shaped grooves (4) are fixedly installed on both sides of the sand filter (1). Multiple water outlets (5) are opened in the V-shaped grooves (4). A flushing hole (6) is also opened in the V-shaped grooves (4) between two water outlets (5). A hole-blocking mechanism (7) is also provided inside the V-shaped grooves (4). The hole-blocking mechanism (7) includes a guide rail (8) and multiple first cover plates (9). Multiple sliders (10) are slidably installed on the guide rail (8). A first connecting plate (11) is fixedly connected between the slider (10) and the corresponding first cover plate (9). The multiple first cover plates (9) are fixedly connected to the second cover plate (16) through a second connecting plate (15) and slidably installed inside the V-shaped grooves (4).

2. The surface cleaning equipment for a V-shaped sand filter according to claim 1, characterized in that: The opening height of the flushing hole (6) is higher than the opening height of the water outlet hole (5).

3. The surface cleaning equipment for a V-shaped sand filter according to claim 1, characterized in that: The flushing hole (6) also includes a water inlet channel (12) and an expansion channel (13), and the transverse cross-section of the water inlet channel (12) and the expansion channel (13) is a trumpet-shaped structure.

4. The surface cleaning equipment for a V-shaped sand filter according to claim 1, characterized in that: The second connecting plate (15) and the second cover plate (16) between the multiple first cover plates (9) are arranged at intervals, and the second connecting plate (15) and the flushing hole (6) are arranged at the same height, while the second cover plate (16) is arranged at a lower height than the flushing hole (6).

5. The surface cleaning device for a V-shaped sand filter according to claim 1, characterized in that: A third connecting plate (17) is fixedly connected between multiple first connecting plates (11). A push plate (18) is fixedly installed at one end of the third connecting plate (17), and the end of the push plate (18) away from the third connecting plate (17) is fixedly connected to one end of the piston rod of the cylinder (3).

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