Backflushing cleaning device for filter layer of water purifier

Abstract

The utility model discloses a backflushing device for a filter layer of a water purifier, which relates to the technical field of sewage treatment and comprises a filter component, a transmission component and a flushing component. A filter layer is arranged in the filter assembly; the transmission assembly comprises a transmission part, a supporting plate and a driving part, and the driving part drives the transmission part to rotate under the action of external force, so that the supporting plate rotates in the filtering area; the flushing assembly comprises a flushing part and a pressure pump, flushing holes are formed in the flushing part at intervals, and the pressure pump communicates with the flushing holes; by arranging a pressure pump, high-pressure gas is sprayed out through a flushing part and a flushing hole to act on a filtering layer, so that the filtering layer is locally expanded, an impurity layer at the expanded part of the filtering layer is broken from a surrounding impurity layer and is separated from the filtering layer under the flushing of the high-pressure gas, and the high-pressure gas and water flow impact the impurity layer, so that the impurity layer is scattered; the driving part drives the supporting plate to rotate, so that the flushing part flushes different positions of the filtering layers from bottom to top, the multiple filtering layers are flushed from local to whole, and the flushing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a filter layer backflushing device of water purifier. BACKGROUND

[0002] The pretreatment system full-automatic integrated water purifier pretreats water source by using surface water, and the water intake place is a river water well.The treatment process comprises "disinfection, flocculation and dosing + HZA type full-automatic water purifier + disinfection + reuse production", and the main purpose is to remove turbidity, suspended solids, colority and the like in raw water, and to ensure that the water quality after treatment meets the water quality requirement of production water.In the water treatment system, the resistance of the filter layer gradually increases due to the accumulation of suspended solids, silt and other impurities intercepted after a period of filtration, and the filtration rate of the filter layer decreases, and the impurities deposited on the filter layer are difficult to clean and discharge.

[0003] The utility model patent with patent No. CN201896073U discloses an automatic siphon backflushing system of integrated water purification equipment, and the backflushing is that when the water level of the water purifier rises to a certain height, the water stored in the filtration zone is rapidly accelerated under the static pressure of the upper clear water layer to perform backflushing, the clear water in the clear water zone returns in the reverse direction according to the normal operation path, and when the clear water passes through the filtration zone, the backflushing of the filter layer is started, and after the backflushing lasts for 3-5 minutes, the backflushing is automatically stopped when the water level of the clear water zone drops to a certain water level (air is sucked into the suction pipe), the backflushing sewage is discharged into the sewage tank, and the backflushing water is collected in the backflushing water collection pool, and during the backflushing process, the water quantity and pressure of the backflushing need to be carefully designed, and the design generally requires that the intensity of the backflushing water is 40 cubic meters per square meter per hour, and the backflushing is triggered and stopped through differential pressure, time or manual control design; because the impurities on the filter layer have been accumulated into blocks and become compact under the long-term pressure of the water flow, it is difficult to separate the impurities from the filter layer quickly and make the impurity blocks be scattered and mixed into the sewage during the backflushing process, and the blocky impurities are difficult to be discharged from the siphon pipe. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a filter layer backflushing device of water purifier, which is used to solve the problem that the blocky impurities are difficult to be separated from the filter layer quickly and discharged during the backflushing and sewage discharge process.

[0005] To achieve the above-mentioned purpose, the utility model provides a filter layer backflushing device of water purifier, which comprises a filter assembly, a filtration zone and a clear water zone are arranged in the filter assembly, and a filter layer is arranged between the filtration zone and the clear water zone; and the filter layer backflushing device further comprises:

[0006] The transmission assembly comprises a transmission piece arranged in the filtering area and below the filtering layer, and a support plate arranged on the transmission piece; the transmission piece is arranged at the center of the filtering layer; a space is left between the support plate and the filtering layer; the outer part of the filtering assembly is provided with a driving piece connected with the transmission piece; the driving piece drives the transmission piece to rotate under the action of external force, so that the support plate rotates in the filtering area;

[0007] The flushing assembly comprises a flushing piece arranged on the support plate and a pressure pump arranged outside the filtering assembly; the flushing piece is provided with flushing holes at intervals; the flushing holes are arranged along the radial direction of the support plate; the pressure pump is communicated with the flushing holes.

[0008] As a further improvement of the utility model, the transmission piece comprises a rotating rod rotatably arranged in the filtering assembly and a transmission rod engaged with the transmission rod; the driving piece comprises a driving motor; the output end of the driving motor is connected with the transmission rod; the support plate is connected with the rotating rod and is arranged perpendicularly to the rotating rod.

[0009] As a further improvement of the utility model, the rotating rod is arranged perpendicularly to the transmission rod, and the rotating rod is provided with a worm wheel; the transmission rod is provided with a worm engaged with the worm wheel.

[0010] As a further improvement of the utility model, the filtering area is provided with a shielding cover; the shielding cover is provided with a through hole; the transmission rod, the worm wheel and the worm are all arranged in the shielding cover, and one end of the rotating rod penetrates through the through hole.

[0011] As a further improvement of the utility model, the flushing piece comprises a flushing disc arranged on the support plate and a flushing pipe communicated with the flushing disc; the flushing disc is provided with a flushing cavity in the inside, and the flushing disc is provided with a shrinked end sealing layer; the flushing holes are arranged on the shrinked end sealing layer; the flushing pipe is communicated with the flushing cavity.

[0012] As a further improvement of the utility model, the rotating rod is provided with a conveying channel in the inside, and a rotating conversion joint is arranged between the rotating rod and the filtering assembly; the flushing pipe is connected with the rotating conversion joint.

[0013] The utility model has the advantages of:

[0014] The pressure pump is arranged to spray high-pressure gas out of the flushing piece and the flushing hole to act on the filtering layer, so that the filtering layer is locally expanded, the impurity layer at the expanded part of the filtering layer is broken and separated from the filtering layer under the flushing of the high-pressure gas, the high-pressure gas and water flow impact the impurity layer, so that the impurity layer is dispersed, the driving piece drives the support plate to rotate, the flushing piece flushes different positions of the filtering layer from bottom to top, so that the filtering layer is flushed from local to whole, and the flushing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of the backflush cleaning device for the filter layer of the water purifier of the utility model;

[0016] Figure 2 It is the flushing assembly structure schematic view of the backflush cleaning device for the filter layer of the water purifier of the utility model;

[0017] Mark explanation:

[0018] 1, filter assembly;2, filter area;3, clean water area;4, filter layer;5, transmission part;501, rotating rod;502, transmission rod;6, support plate;7, driving part;701, driving motor;8, flushing part;801, flushing disc;802, flushing pipe;803, flushing cavity;804, shrink end seal layer;9, pressure pump;10, flushing hole;11, bearing;12, worm wheel;13, worm;14, transmission hole;15, first sealing ring;16, shielding cover;17, through hole;18, second sealing ring;19, shaft coupling;20, conveying channel;21, rotating conversion joint;22, fixed rod. Specific implementation

[0019] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is further detailed to the utility model by combining with the drawings and examples. It should be understood that the described examples are only a part of the examples of the utility model, rather than all examples. In the case of no conflict, the examples in the application and the features in the examples can be combined with each other. Based on the examples in the utility model, all other examples obtained by the ordinary skill in the art without creative labor are within the protection scope of the utility model.

[0020] In an example, referring to Figure 1 The backflush cleaning device for the filter layer of the water purifier of the utility model comprises a filter assembly 1, a transmission assembly and a flushing assembly.

[0021] Among them, the filter assembly 1 is internally provided with a filter area 2 and a clean water area 3, and a filter layer 4 is arranged between the filter area 2 and the clean water area 3;The transmission assembly comprises a transmission part 5 arranged in the filter area 2 and located below the filter layer 4, and a support plate 6 arranged on the transmission part 5, the transmission part 5 is located at the center position of the filter layer 4, and a space is left between the support plate 6 and the filter layer 4, the outside of the filter assembly 1 is provided with a driving part 7 connected with the transmission part 5, the driving part 7 drives the transmission part 5 to rotate under the action of external force, so that the support plate 6 rotates in the filter area 2;The flushing assembly comprises a flushing part 8 arranged on the support plate 6 and a pressure pump 9 arranged outside the filter assembly 1, the flushing part 8 is provided with flushing holes 10 at intervals, the arrangement direction of the flushing holes 10 is along the radial direction of the support plate 6, and the pressure pump 9 is communicated with the flushing holes 10.

[0022] Further, referring to Figure 2 The transmission member 5 comprises a rotating rod 501 arranged in the filter assembly 1, and a transmission rod 502 engaged with the transmission rod 502. The driving member 7 comprises a driving motor 701, and the output end of the driving motor 701 is connected with the transmission rod 502. The support plate 6 is connected with the rotating rod 501 and is arranged perpendicularly to the rotating rod 501.

[0023] Preferably, the bottom end of the filter assembly 1 is provided with a bearing 11, and one end of the rotating rod 501 is fixedly connected with the inner ring of the bearing 11. The rotating rod 501 is arranged vertically in the filter area 2, and the end of the rotating rod 501 away from the bearing 11 faces the filter layer 4.

[0024] Preferably, the length of the support plate 6 is half of the length of the filter layer 4.

[0025] Further, referring to Figure 2 The rotating rod 501 is arranged perpendicularly to the transmission rod 502, and the rotating rod 501 is provided with a worm wheel 12. The transmission rod 502 is provided with a worm 13 engaged with the worm wheel 12.

[0026] Preferably, the filter assembly 1 is provided with a transmission hole 14, and the transmission rod 502 passes through the transmission hole 14 and is located in the filter area 2. The transmission hole 14 is provided with a first sealing ring 15.

[0027] Further, the filter area 2 is provided with a shielding cover 16, and the shielding cover 16 is provided with a through hole 17. The transmission rod 502, the worm wheel 12, and the worm 13 are located in the shielding cover 16, and one end of the rotating rod 501 passes through the through hole 17.

[0028] Preferably, the through hole 17 is provided with a second sealing ring 18.

[0029] Preferably, the driving motor 701 is connected with the transmission rod 502 through a shaft coupling 19.

[0030] In the above arrangement, the driving motor 701 adopts an existing structure, and no improvement is proposed for the structure of the driving motor 701 in the application. During the process of electrifying the driving motor 701, the driving motor 701 rotates to drive the transmission rod 502 to rotate. The worm 13 rotates with the transmission rod 502 and is engaged with the worm wheel 12. The worm wheel 12 rotates to drive the rotating rod 501 to rotate. The rotating rod 501 drives the support plate 6 to rotate, so that the flushing member 8 rotates. The flushing groove and the flushing hole 10 rotate to face different positions of the filter layer 4.

[0031] Further, referring to Figure 2The flushing member 8 comprises a flushing disc 801 arranged on the support plate 6, a flushing pipe 802 in communication with the flushing disc 801, and a flushing cavity 803 arranged in the flushing disc 801.

[0032] Preferably, the flushing disc 801 is in a strip shape, and a cross section of the flushing disc 801 in a vertical direction is in a triangular structure, so that an internal dimension of one end of the flushing disc 801 close to the support plate 6 is smaller than an internal dimension of one end of the flushing disc 801 close to the shrinkable sealing layer 804.

[0033] Further, referring to Figure 2 The rotating rod 501 is internally provided with a conveying channel 20, and a rotating conversion joint 21 is arranged between the rotating rod 501 and the filter assembly 1. The flushing pipe 802 is connected with the rotating conversion joint 21.

[0034] Preferably, the rotating rod 501 is internally hollow to form the conveying channel 20. The bearing 11 is provided with a fixing rod 22, and the rotating conversion joint 21 is mounted on the fixing rod 22. The rotating rod 501 is rotatably mounted on the rotating conversion joint 21.

[0035] Preferably, the rotating conversion joint 21 adopts an existing structure, so that the flushing pipe 802 is in communication with the flushing cavity 803 and has a sealing property during the rotation of the rotating rod 501.

[0036] Preferably, the pressure pump 9 adopts an existing structure, and the pressure pump 9 is in communication with the flushing pipe 802.

[0037] In the above arrangement, the pressure pump 9 flushes the high-pressure gas into the flushing cavity 803 through the inflation pipe. After the shrinkable sealing layer 804 is inflated, the flushing hole 10 is opened. The high-pressure gas is sprayed from the flushing hole 10 to act on the filter layer 4, so that the filter layer 4 is locally expanded. The impurity layers deposited on the filter layer 4 are sheared and broken. The impurity layers opposite to the flushing hole 10 are scattered by the impact of the high-pressure gas, and the deposited impurities are taken away from the filter layer 4 in the process of floating on the gas, so as to ensure that the filter material particles have sufficient gaps, thereby separating the impurities from the filter layer 4. The shrinkable sealing layer is made of silica gel.

[0038] In the embodiment, the high-pressure air is sprayed to the bottom of the filter layer 4 by the pressure pump 9, the gas moves from bottom to top in the filter layer 4, the filter layer 4 is partially expanded to make the impurity layer in the expanded position be sheared off, and the impurities in the expanded position are scattered and mixed into the sewage to be discharged from the siphon under the flushing of the high-pressure gas, the driving motor 701 rotates to drive the transmission rod 502 and the rotating rod 501 to rotate, the support plate 6 and the flushing disc 801 rotate to flush different positions of the filter layer 4, the rotating rod 501 drives the flushing disc 801 to rotate to repeatedly flush the filter layer 4, and the flushing effect of the filter layer 4 is improved.

[0039] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A backwashing device for a filter layer of a water purifier, comprising a filter assembly (1), a filter zone (2) and a clean water zone (3) being provided in the filter assembly (1), and a filter layer (4) being provided between the filter zone (2) and the clean water zone (3); characterized in that, Also include: Transmission assembly, including transmission member (5) arranged in the filter area (2) and below the filter layer (4), support plate (6) arranged on the transmission member (5); The transmission member (5) is located at the center position of the filter layer (4); The support plate (6) is spaced apart from the filter layer (4); The outside of the filter assembly (1) is provided with driving member (7) connected with transmission member (5); The driving member (7) drives the transmission member (5) to rotate under the action of external force, so that the support plate (6) rotates in the filter area (2); The flushing assembly comprises a flushing member (8) arranged on the support plate (6) and a pressure pump (9) arranged outside the filter assembly (1); The flushing holes (10) are arranged on the flushing member (8) in intervals; The arrangement direction of the flushing hole (10) is along the radial direction of the support plate (6); The pressure pump (9) is communicated with the flushing hole (10).

2. The backwashing device of claim 1, wherein: The transmission member (5) comprises a rotating rod (501) arranged in the filter assembly (1) and a transmission rod (502) engaged with the transmission rod (502); The driving member (7) comprises a driving motor (701); The output end of the driving motor (701) is connected with the transmission rod (502); The support plate (6) is connected with the rotating rod (501) and is arranged perpendicularly to the rotating rod (501).

3. A backwashing device for a filter bed of a water purifier according to claim 2, characterized in that: The rotating rod (501) is arranged perpendicularly to the transmission rod (502), and the rotating rod (501) is provided with a worm gear (12); The transmission rod (502) is provided with a worm (13) engaged with the worm gear (12).

4. The backwashing device of claim 3, wherein: The filter area (2) is provided with a shielding cover (16); The shielding cover (16) is provided with a through hole (17); The transmission rod (502), the worm gear (12) and the worm (13) are located in the shielding cover (16), and one end of the rotating rod (501) penetrates through the through hole (17).

5. A backwashing device for a filter bed of a water purifier according to claim 4, characterized in that: The flushing member (8) comprises a flushing disc (801) arranged on the support plate (6) and a flushing pipe (802) communicated with the flushing disc (801); The inside of the flushing disc (801) is provided with a flushing cavity (803), and the flushing disc (801) is provided with a shrinked end sealing layer (804); The flushing hole (10) is located on the shrinked end sealing layer (804); The flushing pipe (802) is communicated with the flushing cavity (803).

6. A backwashing device for a filter bed of a water purifier according to claim 5, characterized in that: The inside of the rotating rod (501) is provided with a conveying channel (20), and the rotating rod (501) and the filter assembly (1) are provided with a rotating conversion joint (21); The flushing pipe (802) is connected with the rotating conversion joint (21).

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