Multistage filter device for treating ammonia-nitrogen wastewater

Abstract

The utility model discloses a multistage formula ammonia nitrogen wastewater treatment is with filter equipment, through centrifugal force to wastewater and is handled filter, make the sludge stay in the inside of throwing filter drum, then lift -and -lower motor drive the up-and-down movement of the scraper, when the scraper moves up, scrape the sludge on the inner wall, clean the inner wall, make the sludge head of sucking can scrape the sludge and draw out, fully discharge the sludge, prevent the blockage, effectively improve the filtering effect. Through two filter screens can carry out multiple filtration to wastewater, then the sludge pump utilizes the total pipe sludge discharge pipe and two sludge suction pipes to fully draw out the sludge in the inside, avoid the blockage, conveniently discharge the sludge in the inside and handle, further improve the filtering effect, be suitable for large -scale use and popularization in industry.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ammonia nitrogen wastewater treatment technical field, concretely is a kind of multistage ammonia nitrogen wastewater treatment filter device. BACKGROUND

[0002] Ammonia nitrogen wastewater is mainly derived from chemical fertilizer, coking, petrochemical, pharmaceutical, food, landfill, etc., a large amount of ammonia nitrogen wastewater is discharged into water body, which not only causes water body eutrophication and black odor, but also increases the difficulty and cost of water treatment, and even has toxic effect on human and biology.In the preliminary treatment of ammonia nitrogen wastewater, the sludge in the ammonia nitrogen wastewater needs to be filtered.

[0003] The filter device for ammonia nitrogen wastewater treatment in the prior art can filter the sludge in ammonia nitrogen wastewater by multiple filtering.The device usually uses centrifugal force to perform primary filtration on wastewater, but due to the effect of centrifugal force, the sludge adheres to the side wall of the spin filter drum, so that the sludge is difficult to be fully pumped out through the pipeline, which easily causes the spin filter drum to be blocked, and the filtering effect is poor. SUMMARY

[0004] The utility model aims at providing a multistage ammonia nitrogen wastewater treatment filter device to solve the problem of poor filtering effect of the existing ammonia nitrogen wastewater filter device.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A multistage ammonia nitrogen wastewater treatment filter device, comprising a cylindrical filter housing with both ends closed, a centrifugal filter assembly and a sludge pumping assembly; the filter housing bottom is provided with a drain pipe;

[0007] The centrifugal filter assembly comprises a spin filter drum coaxially arranged at the top of the filter housing; an annular space exists between the outer wall of the spin filter drum and the inner wall of the filter housing; a through liquid injection hole is formed in the middle of the top plate of the filter housing and the top plate of the spin filter drum;

[0008] The top plate of the filter housing is fixedly provided with a stand, the bottom of the stand is provided with a liftable connecting sleeve, the connecting sleeve can enter the inside of the spin filter drum from the liquid injection hole; the bottom of the connecting sleeve is connected with a circular scraper, the outer diameter of the scraper matches the inner diameter of the spin filter drum; the lower part of the connecting sleeve is connected with one end of a sludge pumping pipe, the other end of the sludge pumping pipe extends out of the filter housing and is connected with a sludge pumping pump;

[0009] The silt suction assembly comprises at least one layer of filter screen arranged in the lower part of the filter shell, and a silt suction pipe is arranged on the filter screen, wherein the silt suction pipe is uniformly provided with a plurality of through silt suction holes in the axial direction near one side of the corresponding filter screen, and the silt suction pipe is sealed and penetrates the filter shell and is in communication with the silt suction pipe.

[0010] The utility model still has the following characteristics:

[0011] Further, a transmission cylinder is fixedly connected to the inner wall of the liquid injection hole of the spinning filter cylinder, the transmission cylinder extends out of the liquid injection hole and above the upper end of the filter shell, and a first rotating motor is further arranged on the top plate of the filter shell.

[0012] A circle of transmission teeth is arranged on the first rotating motor and the transmission cylinder in the circumferential direction, and the transmission teeth of the first rotating motor and the transmission cylinder are mutually engaged.

[0013] Further, the centrifugal filter assembly further comprises a reciprocating rod.

[0014] The stand is a reverse "U" shaped structure composed of two side plates and a top plate.

[0015] A second rotating motor is arranged on the top plate of the stand, the reciprocating rod is coaxially fixedly connected to the output shaft of the second rotating motor by rotating and penetrating the top plate.

[0016] An external thread is arranged on the reciprocating rod, a vertical thread groove is arranged on the connecting sleeve, and the reciprocating rod is rotated and enters the thread groove of the connecting sleeve.

[0017] Limiting grooves are arranged on the side of each of the two side plates of the stand, limiting rods are arranged on the top of the connecting sleeve, and the two limiting rods are respectively slid into the corresponding limiting grooves.

[0018] Further, two layers of filter screens are arranged in the lower part of the filter shell, and a silt suction pipe is arranged on each layer of filter screen.

[0019] Further, the lower part of the connecting sleeve is connected to one end of the silt suction pipe through a fixing rod.

[0020] Further, the lower part of the connecting sleeve is connected to the silt suction head through a fixing rod.

[0021] The silt suction head is connected to one end of the corrugated pipe, and the other end of the corrugated pipe is connected to one end of the silt suction pipe.

[0022] Compared with the prior art, the utility model has the following technical effects:

[0023] (Ⅰ) The multi-stage ammonia-nitrogen wastewater treatment filtering device has the advantages that the centrifugal force is used to treat and filter the wastewater, the sludge is left in the spin filter, then the lifting motor drives the scraper to move up and down, the sludge on the inner wall is scraped off when the scraper moves up, the inner wall is cleaned, the sludge scraped off can be sucked out by the sludge suction head, the sludge is fully discharged, the filter effect is effectively improved.

[0024] (Ⅱ) The multi-stage ammonia-nitrogen wastewater treatment filtering device has the advantages that the centrifugal force is used to treat and filter the wastewater, the sludge is left in the spin filter, then the lifting motor drives the scraper to move up and down, the sludge on the inner wall is scraped off when the scraper moves up, the inner wall is cleaned, the sludge scraped off can be sucked out by the sludge suction head, the sludge is fully discharged, the filter effect is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole structure schematic view of the multi-stage ammonia-nitrogen wastewater treatment filtering device.

[0026] Figure 2 It is a centrifugal filtering assembly structure schematic view in the utility model.

[0027] Figure 3 It is a filtering and sludge pumping assembly partial structure schematic view.

[0028] Figure 4 It is a filtering and sludge pumping assembly partial structure schematic view.

[0029] The meanings of the reference numbers in the drawings are as follows:

[0030] 1, filter shell; 2, drain pipe; 3, spin filter; 4, stand; 5, connecting sleeve; 6, scraper; 7, sludge pumping pipe; 8, sludge pumping pump; 9, filter screen; 10, sludge suction pipe; 11, transmission cylinder; 12, first rotating motor; 13, reciprocating rod; 14, second rotating motor; 15, limiting groove; 16, limiting rod; 17, fixed rod; 18, sludge suction head; 19, corrugated pipe. DETAILED DESCRIPTION

[0031] It should be noted that all components in the utility model are known components in the prior art, for example, the spin filter is a known spin filter.

[0032] The following gives a specific embodiment of the utility model, and it should be noted that the utility model is not limited to the following specific embodiments, and any equivalent transformation based on the technical solutions of the application falls within the protection scope of the utility model.

[0033] For example, Figures 1-4As shown, a multi-stage filter device for treating ammonia-nitrogen wastewater, comprising a cylindrical filter housing 1 with both ends closed, a centrifugal filter assembly and a sludge pumping assembly;

[0034] The filter housing 1 is provided with a drain pipe 2 at the bottom;

[0035] The centrifugal filter assembly comprises a spin filter cylinder 3 coaxially arranged at the top inside the filter housing 1; there is an annular space between the outer wall of the spin filter cylinder 3 and the inner wall of the filter housing 1; a through liquid injection hole is formed in the middle of the top plate of the filter housing 1 and the top plate of the spin filter cylinder 3;

[0036] A stand 4 is fixedly arranged on the top plate of the filter housing 1, and the bottom of the stand 4 is provided with a liftable connecting sleeve 5 which enters the inside of the spin filter cylinder 3 from the liquid injection hole; a circular scraper 6 is connected to the bottom of the connecting sleeve 5, and the outer diameter of the scraper 6 matches the inner diameter of the spin filter cylinder 3; the lower part of the connecting sleeve 5 is connected to one end of a sludge pumping pipe 7, and the other end of the sludge pumping pipe 7 extends out of the filter housing 1 and is connected to a sludge pumping pump 8;

[0037] The sludge pumping assembly comprises at least one layer of filter screen 9 arranged at the lower part inside the filter housing 1; a sludge suction pipe 10 is arranged on the filter screen 9, and a plurality of through sludge suction holes are uniformly arranged on the side close to the corresponding filter screen 9 along the axial direction; the sludge suction pipe 10 is sealingly penetrated through the filter housing 1 and is in communication with the sludge pumping pipe 7.

[0038] The centrifugal filter assembly can utilize centrifugal force to filter wastewater, and can scrape off the sludge adhering to the inner wall of the spin filter cylinder 3, fully discharge the sludge, prevent clogging, and effectively improve the filtering effect.

[0039] The scraper 6 is located inside the spin filter cylinder 3, and the outer diameter of the scraper 6 matches the inner diameter of the spin filter cylinder 3, so that the scraper 6 can scrape off the sludge on the inner wall of the spin filter cylinder 3 to avoid clogging. One end of the sludge suction pipe 10 is located inside the spin filter cylinder 3, and the other end is connected to the sludge pumping pump 8, which can discharge the sludge inside the spin filter cylinder 3 to the outside.

[0040] On the other hand, the filter screen 9 further filters the sewage, the sludge suction pipe 10 is in communication with the sludge pumping pipe 7, and the sludge filtered by the filter screen 9 is further discharged, thereby improving the filtering efficiency.

[0041] As a preferred solution, a transmission cylinder 11 is fixedly connected to the inner wall of the liquid injection hole of the spin filter cylinder 3, and the transmission cylinder 11 extends out of the upper end of the filter housing 1 from the liquid injection hole; a first rotating motor 12 is further arranged on the top plate of the filter housing 1;

[0042] A circle of transmission teeth is arranged on the first rotating motor 12 and the transmission cylinder 11 along the circumference, and the transmission teeth of the first rotating motor 12 and the transmission cylinder 11 are meshed with each other. The first rotating motor 12 drives the spin filter cylinder 3 to rotate.

[0043] As a preferred solution, the centrifugal filter assembly further comprises a reciprocating rod 13;

[0044] The stand 4 is a reversed "U" structure composed of two side plates and a top plate;

[0045] The top plate of the stand 4 is provided with a second rotating motor 14; the reciprocating rod 13 is coaxially fixedly connected with the output shaft of the second rotating motor 14 by rotating through the top plate,

[0046] The reciprocating rod 13 is provided with external threads, and the connecting sleeve 5 is provided with vertical thread grooves, the reciprocating rod 13 is rotated into the thread grooves of the connecting sleeve 5;

[0047] The side of the two side plates of the stand 4 close to each other is provided with a vertical limiting groove 15, and the top of the connecting sleeve 5 is provided with a limiting rod 16 on each side, and the two limiting rods 16 are respectively slid into the corresponding limiting grooves 15.

[0048] Then the second rotating motor 14 drives the reciprocating rod 13 to rotate, the reciprocating rod 13 drives the connecting sleeve 5 to move up and down, the connecting sleeve 5 drives the scraper 6 to move up and down, when the scraper 6 moves up, the silt on the inner wall of the filter cylinder 3 is scraped off, the inner wall is cleaned, the silt scraped off can be pumped out by the silt pumping pipe 7, the silt is fully discharged to prevent blockage, and the filtering effect is effectively improved.

[0049] As a preferred solution, two layers of filter screens 9 are arranged in the lower part of the filter housing 1, and one silt suction pipe 10 is arranged on each layer of filter screens 9. The two layers of filter screens 9 are arranged to further improve the filtering effect.

[0050] As a preferred solution, the lower part of the connecting sleeve 5 is connected with one end of the silt pumping pipe 7 through a fixing rod 17.

[0051] Further preferably, the lower part of the connecting sleeve 5 is connected with a silt suction head 18 through a fixing rod 17;

[0052] The silt suction head 18 is connected with one end of a corrugated pipe 19, and the other end of the corrugated pipe 19 is connected with one end of the silt pumping pipe 7.

[0053] The fixing rod 17 is connected with the silt suction head 18 at the end, the silt suction head 18 is fixedly connected with the corrugated pipe 19 at the top end, and the silt suction head 18 can move up and down by using the expansion and contraction function of the corrugated pipe 19, so that the silt suction is more effectively realized.

Claims

1. A multi-stage filtration device for treating ammonia nitrogen wastewater, comprising a cylindrical filter housing (1) sealed at both ends, characterized in that, It also includes a centrifugal filtration assembly and a sludge removal assembly; a drain pipe (2) is provided at the bottom of the filter housing (1); The centrifugal filtration assembly includes a centrifugal filter cylinder (3) that is coaxially rotatably disposed at the top of the filter housing (1); there is an annular space between the outer wall of the centrifugal filter cylinder (3) and the inner wall of the filter housing (1); a through-hole is provided in the middle of the top plate of the filter housing (1) and the top plate of the centrifugal filter cylinder (3); A support frame (4) is fixedly installed on the top plate of the filter housing (1). A liftable connecting sleeve (5) is installed at the bottom of the support frame (4). The connecting sleeve (5) can enter the interior of the filter cylinder (3) from the injection hole. A circular scraper (6) is connected to the bottom of the connecting sleeve (5). The outer diameter of the scraper (6) matches the inner diameter of the filter cylinder (3). The lower part of the connecting sleeve (5) is connected to one end of the sludge suction pipe (7). The other end of the sludge suction pipe (7) extends out of the filter housing (1) and is connected to the sludge suction pump (8). The sludge suction assembly includes at least one layer of filter screen (9) disposed in the lower part of the filter housing (1). The filter screen (9) is provided with a sludge suction pipe (10). The sludge suction pipe (10) has a plurality of through sludge suction holes evenly opened along the axial direction on the side close to the corresponding filter screen (9). The sludge suction pipe (10) is sealed through the filter housing (1) and connected to the sludge suction pipe (7).

2. The multi-stage filtration device for treating ammonia nitrogen wastewater as described in claim 1, characterized in that, The inner wall of the injection hole of the filter cylinder (3) is fixedly connected to a transmission cylinder (11), which extends from the injection hole to the upper end of the filter housing (1); a first rotating motor (12) is also provided on the top plate of the filter housing (1). Both the first rotating motor (12) and the transmission cylinder (11) are provided with a ring of transmission teeth along the circumference, and the transmission teeth of the first rotating motor (12) and the transmission cylinder (11) mesh with each other.

3. The multi-stage filtration device for treating ammonia nitrogen wastewater as described in claim 1, characterized in that, The centrifugal filter assembly also includes a reciprocating rod (13); The upright frame (4) is an inverted "U" shaped structure consisting of two side plates and a top plate; The top plate of the support frame (4) is equipped with a second rotary motor (14); the reciprocating rod (13) rotates through the top plate and is coaxially and fixedly connected to the output shaft of the second rotary motor (14). The reciprocating rod (13) is provided with an external thread, and the connecting sleeve (5) is provided with a vertical thread groove. The reciprocating rod (13) rotates into the thread groove of the connecting sleeve (5). The upright frame (4) has vertical limiting grooves (15) on the side of the two side plates that are close to each other. The connecting sleeve (5) has limiting rods (16) on both sides of the top. The two limiting rods (16) slide into the corresponding limiting grooves (15).

4. The multi-stage filtration device for treating ammonia nitrogen wastewater as described in claim 1, characterized in that, The lower part of the filter housing (1) is provided with two layers of filter screens (9), and each layer of filter screen (9) is provided with a suction pipe (10).

5. The multi-stage filtration device for treating ammonia nitrogen wastewater as described in claim 1, characterized in that, The lower part of the connecting sleeve (5) is connected to one end of the sludge suction pipe (7) via a fixing rod (17).

6. The multi-stage filtration device for treating ammonia nitrogen wastewater as described in claim 5, characterized in that, The lower part of the connecting sleeve (5) is connected to the suction head (18) via a fixing rod (17); The suction head (18) is connected to one end of the corrugated pipe (19), and the other end of the corrugated pipe (19) is connected to one end of the suction pipe (7).

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