Denitrification filter tank device

Abstract

A denitrification filter tank device comprises a filter tank body, a filter brick layer, a supporting layer and a filter material layer are sequentially arranged in the filter tank body from bottom to top, one side of the bottom of the filter tank body is communicated and provided with a backwashing air pipe and a backwashing water pipe, the other side of the filter tank body is communicated and provided with a drainage pipe, and the filter tank body is communicated and provided with a blow-off pipe. An annular scraper is arranged in the filter tank body, a vertical rod is fixedly mounted on the annular scraper, a cross rod is mounted in the filter tank body, a sleeve is fixedly mounted on the cross rod, the vertical rod is slidably sleeved in the sleeve, an annular floating plate is sleeved on the vertical rod, the annular floating plate floats on the liquid level, a limiting mechanism for limiting the rotation of the annular floating plate is arranged on the cross rod, and a guide rod is fixedly mounted on the annular floating plate. The utility model has the advantages of simple structure and ingenious conception, can drive the annular scraper blade to move through the change of the water level height during backwashing to scrape off following objects on the pool wall, does not need extra driving force, has low energy consumption, can meet the actual requirements, and is suitable for popularization.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of denitrification filter device, concretely is a kind of denitrification filter device. BACKGROUND

[0002] In the field of wastewater treatment, removing nitrogen pollutants in water body is an important link, and the key to the removal of nitrogen pollutants lies in denitrification, at present, denitrification filter is recognized as nitrogen removal weapon, filter material laid in denitrification filter, filter material particles complete denitrogenation by microorganism attached on surface, in the operation process of denitrification filter, a large amount of biofilm will grow on the surface of filter material, which contains denitrifying bacteria and other microorganisms;When backwashing, part of biofilm may fall off from the surface of filter material, with the scouring of water flow, these biofilm and microorganisms may be taken to the vicinity of pool wall and attached thereon, some suspended solid particles may also be attached on pool wall, and the disturbance effect of air washing gas and water flow on the attachments on pool wall is poor, so the attachments are not easy to fall off, and if they fall off automatically during normal operation of filter material, it will affect the action of filter material, therefore, we design a kind of denitrification filter device for conveniently removing attachments on pool wall. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a kind of denitrification filter device to solve the defects in prior art.

[0004] The utility model is implemented by the following technical solutions:

[0005] A kind of denitrification filter device, including filter pool body, filter pool body is equipped with filter brick layer, support layer and filter material layer from bottom to top in sequence, one side of the bottom of filter pool body is connected and is installed with backwashing gas pipe and backwashing water pipe, the other side of filter pool body is connected and is installed with drain pipe, filter pool body is connected and is installed with blowdown pipe on, annular scraper is equipped in filter pool body, vertical rod is fixedly installed on annular scraper, horizontal rod is installed in filter pool body, sleeve pipe is fixedly installed on horizontal rod, vertical rod is sleeved in sleeve pipe, annular floating plate is sleeved on vertical rod, annular floating plate floats on liquid surface, horizontal rod is equipped with the limiting mechanism that the rotation of annular floating plate is limited, guide rod is fixedly installed on annular floating plate, heteromorphic slide groove that can be slidably matched with guide rod is opened on vertical rod, heteromorphic slide groove is connected in head and tail, and there are three corners, vertical rod is equipped with a plurality of continuous conical bodies, the same reset slide groove is opened on conical body, wedge block is elastically connected on sleeve pipe, wedge block can be clamped conical body, also can slide in reset slide groove.

[0006] The denitrification filter device described above, a plurality of box bodies with open top are installed on the filter pool body, and a sawtooth groove is provided on the side of each box body.

[0007] The denitrification filter device described above, the limiting mechanism includes a limiting rod, which is fixedly installed on the horizontal rod, a through hole is formed on the annular floating plate, and the limiting rod passes through the through hole.

[0008] The sleeve is provided with a through slot, and the wedge-shaped block is slidingly installed in the through slot.

[0009] The box body is provided with a hook at each end, and the hooks are hooked on the sidewalls of the filter body.

[0010] The horizontal rod is provided with a reverse U-shaped plate, and the reverse U-shaped plate is clamped on the edge of the filter body.

[0011] The utility model discloses a simple structure, and the water level height change of backwashing can drive the annular scraper to move and scrape the pool wall, and the utility model discloses a small energy consumption, and can satisfy the actual demand, and is suitable for promoting. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will be briefly introduced the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, on the premise of not paying the creative labor, other drawings can also be obtained according to these drawings.

[0013] Figure 1 It is the structural schematic diagram of the utility model; Figure 2 It is the schematic diagram of the guide rod at the third corner; Figure 3 It is the first development diagram of the special-shaped sliding groove; Figure 4 It is the second development diagram of the special-shaped sliding groove; Figure 5 It is Figure 1 A view in the among; Figure 6 It is Figure 1 The upside-down view of the reverse U-shaped plate in Figure 7 It is the schematic diagram of the box body.

[0014] Reference signs: 1, filter body, 2, backwashing air pipe, 3, drain pipe, 4, blowdown pipe, 5, annular scraper, 6, vertical rod, 8, sleeve, 9, conical body, 10, annular floating plate, 11, horizontal rod, 12, guide rod, 13, special-shaped sliding groove, 14, reset sliding groove, 15, wedge-shaped block, 16, backwashing water pipe, 20, box body, 21, sawtooth groove, 30, limiting rod, 31, through hole, 40, through slot, 41, spring, 50, hook, 60, reverse U-shaped plate. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] A denitrification filter device, such as Figure 1 , 2, 3, 4, 5, 6, 7, including filter body 1, filter body 1 is the open top jar body, filter body 1 is from below to above in turn provided with filter brick layer, support layer and filter material layer, filter brick layer, support layer and filter material layer are all existing mature technology, not detailed here, filter body 1 bottom one side is communicated and is installed with backwashing gas pipe 2 and backwashing water pipe 16, for air-water combined backwashing, filter body 1 other side is communicated and is installed with drain pipe 3, filter body 1 is communicated and is installed with blowdown pipe 4, blowdown pipe 4 is located above filter material layer, filter body 1 is provided with annular scraper 5, the outer periphery of annular scraper 5 and the inner wall of filter body 1 sliding contact cooperation, annular scraper 5 is fixedly installed vertical rod 6, vertical rod 6 is fixedly connected with the inner periphery of annular scraper 5 through several connecting rods, filter body 1 is installed with cross bar 11, cross bar 11 is fixedly installed sleeve 8, vertical rod 6 is slidingly sleeved in sleeve 8, vertical rod 6 is sleeved with annular floating plate 10, annular floating plate 10, vertical rod 6, sleeve 8, annular scraper 5, filter body 1 are coaxially arranged, annular floating plate 10 floats on the liquid surface, cross bar 11 is provided with the limiting mechanism of limiting annular floating plate 10 rotation, annular floating plate 10 is fixedly installed guide rod 12, vertical rod 6 is provided with profiled sliding groove 13 capable of slidingly cooperating with guide rod 12, profiled sliding groove 13 is connected end to end, and has three corners, and the end-to-end connected place is inclined long sliding groove, vertical rod 6 is provided with several continuous conical bodies 9, a reset sliding groove 14 is formed in the conical body 9, the reset sliding groove 14 and the long sliding groove of profiled sliding groove 13 are located on the same side, and the inclination is same, sleeve 8 is elastically connected with wedge block 15, wedge block 15 can be clamped on conical body 9, and also can slide in reset sliding groove 14. The utility model discloses simple structure, ingenious, can be driven annular scraper 5 removal through the water level height change when backwashing, scrape off on the pool wall with things, need not additional driving force, small energy consumption, can satisfy actual demand, is suitable for promotion.When the filter material in the filter body 1 is backwashed, the liquid level in the filter body 1 rises, the annular floating plate 10 and the guide rod 12 are driven to move upward, the guide rod 12 is located at the first corner of the special-shaped sliding groove 13 at this time, the guide rod 12 drives the vertical rod 6 and the annular scraper 5 to move upward together, the annular scraper 5 scrapes off the attachments on the side wall of the filter body 1, and the scraped attachments are discharged from the blowdown pipe 4 together when the backwash sewage is discharged, and the vertical rod 6 rises, and the wedge-shaped block 15 does not block the conical body 9 due to the effect of the inclined surface of the wedge-shaped block 15, so that the vertical rod 6 moves upward in the positive direction; when the liquid level is stable, the side of the wedge-shaped block 15 without the inclined surface blocks the conical body 9, thereby blocking the downward movement of the vertical rod 6; when the liquid returns to the normal liquid level after the backwashing is completed, the annular floating plate 10 moves downward under the action of gravity, the guide rod 12 slides in the special-shaped sliding groove 13 at this time, and the special-shaped sliding groove 13 is pushed to make the vertical rod 6 rotate until the annular floating plate 10 returns to the normal water level with the liquid level, and the guide rod 12 moves to the second corner of the special-shaped sliding groove 13 at this time; when backwashing is performed again, the same process is performed as described above, the height of the annular scraper 5 is increased again, but this time the guide rod 12 drives the vertical rod to move upward from the second corner, and when the annular floating plate 10 moves downward after the backwashing is completed, the guide rod 12 slides from the second corner to the third corner at this time, the vertical rod 6 rotates again, the annular floating plate 10 returns to the original position, the guide rod 12 is located at the third corner at this time, and due to the rotation of the vertical rod 6, the wedge-shaped block 15 coincides with the lower end of the reset sliding groove 14, the vertical rod 6 loses the block of the wedge-shaped block 15, and the vertical rod 6 and the annular scraper 5 move downward under the action of gravity and rotate again under the guidance of the special-shaped sliding groove 13 and the guide rod 11, the wedge-shaped block 15 slides in the reset sliding groove 14, and when the guide rod 12 is located at the first corner again, the annular scraper 15 returns to the initial position, and the conical body 9 is blocked by the wedge-shaped block 15 again, and the next cycle is performed when backwashing is performed again.

[0017] Specifically, as shown in the drawings, the filter body 1 of the embodiment is provided with a plurality of box bodies 20 with open tops, the two ends of the box body 20 are fixedly connected to the inner wall of the filter body 1, and in the embodiment, there are two box bodies 20, and the side edges of the box body 20 are respectively provided with sawtooth grooves 21. The sewage to be purified is first introduced into the box body 20, and the sewage flows out from the sawtooth groove 21 after being filled, so that the introduced sewage can flow more uniformly onto the filter material layer, and the problem of concentrated sewage falling in one place and causing excessive impact when the sewage is introduced through a pipeline is avoided.

[0018] Specifically, as shown in the drawings, the limiting mechanism of the embodiment includes a limiting rod 30, the limiting rod 30 is fixedly installed on the cross rod 11, a through hole 31 is formed in the annular floating plate 10, and the limiting rod 30 passes through the through hole 31. When the liquid level rises and drives the annular floating plate 10, the inner wall of the through hole 31 is in sliding contact with the limiting rod 30, the limiting rod 30 and the vertical rod 6 restrict the annular floating plate 10, so that the annular floating plate 10 cannot rotate.

[0019] Further, as shown in the figure, the sleeve 8 is provided with a through slot 40, and the wedge block 15 is slidingly arranged in the through slot 40. The wedge block 15 is connected with the sleeve 8 through a spring 41. The spring 41 is sleeved on the wedge block 15. One end of the spring 41 is fixedly connected with the sleeve 8, and the other end of the spring 41 is fixedly connected with the wedge block 15. When the vertical rod 6 moves upward, the taper body 9 pushes the inclined surface of the wedge block 15, so that the wedge block 15 moves, the spring 41 is stretched, and the vertical rod 6 can move upward smoothly. When the taper body 9 is no longer in contact with the wedge block 15, the wedge block 15 is reset under the elastic force of the spring 41. When the vertical rod 6 moves downward, the taper body 9 is clamped by the wedge block 15, so that the downward movement of the taper body 9 is prevented.

[0020] Further, as shown in the figure, the two ends of the box body 20 are fixedly provided with hooks 50, and the hooks 50 are arranged on the side wall of the filter tank body 1. The hooks 50 can realize the optional disassembly of the box body 20, so that the filter material in the filter tank body 1 or other maintenance operations can be replaced.

[0021] Further, as shown in the figure, the horizontal rod 11 is fixedly provided with an inverted U-shaped plate 60. The inverted U-shaped plate 60 has an arc and is coaxially arranged with the filter tank body 1. The inverted U-shaped plate 60 is clamped on the edge of the filter tank body 1. When the annular scraper 5 is not used or needs to be cleaned, the inverted U-shaped plate 60 can take down the whole mechanism for scraping the attached objects, or can be used for other filter tank rotation.

[0022] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A denitrification filter device, comprising a filter body (1), wherein a filter brick layer, a support layer and a filter media layer are arranged sequentially from bottom to top inside the filter body (1), a backwash air pipe (2) and a backwash water pipe (16) are connected and installed on one side of the bottom of the filter body (1), a drain pipe (3) is connected and installed on the other side of the filter body (1), and a sewage pipe (4) is connected and installed on the top of the filter body (1), characterized in that: The filter tank body (1) is internally provided with an annular scraper (5), the annular scraper (5) is fixedly installed with a vertical rod (6), the filter tank body (1) is internally installed with a horizontal rod (11), the horizontal rod (11) is fixedly installed with a sleeve (8), the vertical rod (6) is slidably sleeved in the sleeve (8), the vertical rod (6) is sleeved with an annular floating plate (10), the annular floating plate (10) floats on the liquid surface, the horizontal rod (11) is provided with a limiting mechanism limiting the rotation of the annular floating plate (10), the annular floating plate (10) is fixedly installed with a guide rod (12), the vertical rod (6) is provided with a special-shaped sliding groove (13) capable of slidingly cooperating with the guide rod (12), the special-shaped sliding groove (13) is connected at the head and tail and has three corners, the vertical rod (6) is provided with a plurality of continuous conical bodies (9), the conical body (9) is provided with a reset sliding groove (14), the sleeve (8) is elastically connected with a wedge block (15), the wedge block (15) can be clamped on the conical body (9) and can slide in the reset sliding groove (14).

2. A denitrification filter device according to claim 1, characterized in that A plurality of box bodies (20) with open top are installed on the filter tank body (1), and the side edges of the box bodies (20) are respectively provided with sawtooth grooves (21).

3. A denitrification filter apparatus according to claim 1, wherein: The limiting mechanism comprises a limiting rod (30), the limiting rod (30) is fixedly installed on the horizontal rod (11), and the annular floating plate (10) is provided with a through hole (31), the limiting rod (30) passes through the through hole (31).

4. The denitrification filter device of claim 1, wherein: The sleeve (8) is provided with a through groove (40), the wedge block (15) is slidably installed in the through groove (40), and the wedge block (15) is connected with the sleeve (8) through a spring (41).

5. A denitrification filter apparatus according to claim 2, wherein: Both ends of the box body (20) are respectively fixedly installed with a hook (50), and the hook (50) is hooked on the side wall of the filter tank body (1).

6. A denitrification filter device according to claim 5, characterised in that: The horizontal rod (11) is fixedly installed with an inverted U-shaped plate (60), and the inverted U-shaped plate (60) is clamped on the edge of the filter tank body (1).

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