Backwashing structure of ceramic membrane assembly

Abstract

The utility model relates to the technical field of water purifiers, in particular to a backwashing structure of a ceramic membrane component, which comprises a filter tank, the two sealing rings are oppositely arranged at the upper end and the lower end in the filter box; the two ends of the ceramic filtering membrane are connected with the two sealing rings respectively, the interior of the ceramic filtering membrane is of a hollow structure, and ports are formed in the two ends of the ceramic filtering membrane; and the pipeline assembly is used for controlling water to enter a backwashing channel in the filter box. According to the utility model, the movable ring is movably arranged in the filter box, and the cleaning part is arranged on the inner side of the movable ring, so that the cleaning part can be fully contacted with the dirt suction surface of the ceramic filter membrane, and the driving assembly is arranged to drive the movable ring to move along the ceramic filter membrane; therefore, the cleaning component is driven to be matched with backwashing water to clean meshes of the ceramic filter membrane, dirt blocked in the meshes can be effectively removed, backwashing time is shortened, water resources are saved, and the effect of improving backwashing efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifier technical field especially relates to a backwash structure of ceramic membrane assembly. BACKGROUND

[0002] The principle of the water purifier is that when fluid passes through the ceramic filter membrane, particles larger than the pore diameter of the ceramic filter membrane are intercepted, and particles smaller than the pore diameter pass through, thereby realizing solid-liquid separation. Therefore, after the ceramic membrane filter element is used for a period of time, the pores thereof are occupied by dirt, which in turn affects the filtering effect. At this time, backwashing is required. Generally, the water purifier has one water inlet, one purified water outlet, and one backwash sewage outlet. Backwashing refers to allowing water to enter from the purified water outlet, thereby flushing the dirt attached to the ceramic filter membrane out of the backwash sewage outlet.

[0003] The existing technical problem is that when the ceramic filter membrane is backwashed, some dirt will be adsorbed in the pores of the filter membrane to form stubborn dirt. It is difficult to rely on the force of the backwash water itself to unblock the pores in this case. Passive increase of backwash time will also increase production cost. Therefore, it is of practical significance to design a backwash structure that can improve the cleaning efficiency of the ceramic filter membrane. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a backwash structure of ceramic membrane assembly to solve the technical problem of low efficiency of the existing water purifier when backwashing the ceramic filter membrane.

[0005] To achieve the above purpose, the utility model provides a backwash structure of ceramic membrane assembly, which comprises:

[0006] a filter box;

[0007] two sealing rings oppositely arranged at the upper and lower ends of the filter box;

[0008] a ceramic filter membrane connected to the two sealing rings at the two ends, wherein the ceramic filter membrane has a hollow structure and ports are formed at the two ends;

[0009] a pipeline assembly for controlling water to enter the backwash channel in the filter box;

[0010] a movable ring slidingly arranged on one side of the dirt suction surface of the ceramic filter membrane and between the two sealing rings;

[0011] a cleaning component arranged on the inner side of the movable ring, wherein the cleaning component is in contact with the dirt suction surface of the ceramic filter membrane;

[0012] a driving assembly for driving the movable ring to move relative to the ceramic filter membrane, so that the cleaning component cleans the pores of the ceramic filter membrane.

[0013] As the preferred technical scheme of the utility model, a plurality of guide rods are arranged between the two sealing rings, and the guide rods are in sliding cooperation with guide grooves arranged on the surface of the movable ring.

[0014] As the preferred technical scheme of the utility model, the driving assembly comprises:

[0015] A lead screw is rotatably connected to the sealing ring, and the lead screw is matched with a lead screw groove arranged on the surface of the movable ring;

[0016] A driving source is used for driving the lead screw to rotate forward and reversely.

[0017] As the preferred technical scheme of the utility model, the driving source comprises:

[0018] A recessed wall arranged in the interior of the filter box;

[0019] A motor arranged outside the filter box;

[0020] A magnetic coupler main rotor connected to the output shaft of the motor, which extends into the recessed groove of the recessed wall;

[0021] A rotating sleeve arranged outside the recessed wall, and the inner side of the rotating sleeve is provided with a magnetic coupler secondary rotor matched with the magnetic coupler main rotor;

[0022] A driving bevel gear fixedly connected to the rotating sleeve;

[0023] A driven bevel gear matched with the driving bevel gear, and one end of the lead screw penetrates through the sealing ring and is fixedly connected to the driven bevel gear.

[0024] As the preferred technical scheme of the utility model, the lead screw has two and is arranged symmetrically about the movable ring, and a connecting rod is arranged between the driven bevel gears of adjacent lead screws for connecting the two.

[0025] As the preferred technical scheme of the utility model, the upper end of the lead screw penetrates through the sealing ring and is fixedly connected to the driven bevel gear.

[0026] As the preferred technical scheme of the utility model, the cleaning component is a brush arranged on the inner side of the movable ring.

[0027] As the preferred technical scheme of the utility model, the pipeline assembly comprises:

[0028] A first conduit and a second conduit arranged on one side of the upper end of the filter box, the first conduit is located above the upper end sealing ring, and the second conduit is located below the upper end sealing ring.

[0029] A third conduit provided at a lower end of the filter box;

[0030] A control valve provided in the first conduit, the third conduit and the second conduit.

[0031] The utility model discloses a beneficial effect: the utility model discloses a movable ring is arranged in the filter box, and the cleaning part is arranged in the movable ring inboard, can utilize the full contact of cleaning part and the suction dirt surface of ceramic filter membrane, and is provided with the drive assembly and makes it movable ring along ceramic filter membrane motion, thereby drive cleaning part cooperation backflushing water to the mesh of ceramic filter membrane is cleaned, thereby can effectively remove the dirt that is blocked in the mesh, shortens backflushing time, saves water resources, reaches the effect of improving backflushing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawing needed to be used in the embodiment or the prior art description, obviously, the drawing in the following description is only the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0033] Figure 1 It is the main section structure schematic diagram of the utility model;

[0034] Figure 2 It is the filter box half section solid structure schematic diagram of the utility model;

[0035] Figure 3 It is the ceramic filter membrane, movable ring and screw rod solid structure schematic diagram of the utility model;

[0036] Figure 4 It is the motor, magnetic coupler main rotor, magnetic coupler secondary rotor and sleeve local section solid structure schematic diagram of the utility model;

[0037] Figure 5 It is the filter box main section structure schematic diagram of the utility model.

[0038] Marked in the drawing as: 1, filter box;2, sealing ring;3, ceramic filter membrane;4, first conduit;5, third conduit;6, second conduit;7, movable ring;8, bristle;9, screw rod;10, screw rod groove;11, motor;12, magnetic coupler main rotor;13, recess wall;14, sleeve;15, magnetic coupler secondary rotor;16, drive bevel gear;17, driven bevel gear;18, connecting rod;19, guide rod;20, guide groove. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model is further described in detail below in combination with specific embodiments.

[0040] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the utility model should be understood as the usual meaning understood by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, which can change accordingly when the absolute position of the described object changes.

[0041] As shown in Figure 1 A backwash structure of a ceramic membrane assembly, comprising: a filter box 1; two sealing rings 2 oppositely arranged at the upper and lower ends in the filter box 1; a ceramic filter membrane 3 connected with the two sealing rings 2 at the two ends respectively, the ceramic filter membrane 3 is hollow inside and has ports at the two ends; a pipeline assembly for controlling water to enter a backwash channel in the filter box 1; a movable ring 7 slidingly arranged on the side of the suction surface of the ceramic filter membrane 3 and between the two sealing rings 2; a cleaning component arranged on the inner side of the movable ring 7, the cleaning component keeps contact with the suction surface of the ceramic filter membrane 3; a driving assembly for driving the movable ring 7 to move relative to the ceramic filter membrane 3, so that the cleaning component cleans the mesh holes of the ceramic filter membrane 3;

[0042] The above technical scheme can fully remove the dirt blocked in the mesh holes of the ceramic filter membrane 3. When in use, the pipeline assembly is controlled to make water enter the filter box 1 and contact with the ceramic filter membrane 3 through the backwash channel, the dirt on the suction surface of the ceramic filter membrane 3 is flushed out by the backwash water, the dirt and the backwash water are discharged out of the filter box 1 through the water outlet end of the backwash channel, the driving assembly is started to drive the movable ring 7 to move relative to the ceramic filter membrane 3, so that the movable ring 7 drives the cleaning component connected therewith to move synchronously, the cleaning component cooperates with the backwash water to brush and wash the suction surface of the ceramic filter membrane 3, thereby effectively removing the dirt blocked in the mesh holes of the ceramic filter membrane 3, shortening the backwash time, saving water resources, and achieving the effect of improving the backwash efficiency.

[0043] As shown in Figure 1 and Figure 2As shown, in this embodiment, the pipeline assembly includes: a first conduit 4 and a second conduit 6 disposed on the upper side of the filter box 1, the first conduit 4 being located above the upper sealing ring 2 and below the upper sealing ring 2; a third conduit 5 disposed at the lower end of the filter box 1; and control valves disposed in the first conduit 4, the third conduit 5, and the second conduit 6.

[0044] The above technical solution allows backwash water to be introduced into the filter box 1. During use, the third conduit 5 is closed and the second conduit 6 is opened to introduce backwash water into the filter box 1. The backwash water enters from the opposite side of the suction surface of the ceramic filter membrane 3, thereby removing the dirt attached to the suction surface of the ceramic filter membrane 3. The dirt is discharged from the first conduit 4 along with the backwash water, thus achieving backwashing. During normal use, the second conduit 6 is closed, and the first conduit 4 and the third conduit 5 are opened simultaneously. Water enters the filter box 1 from the first conduit 4 and comes into contact with the suction surface of the ceramic filter membrane 3. Since water molecules are smaller than the mesh, they pass through the ceramic filter membrane 3 and continue downward, eventually being discharged as purified water through the third conduit 5. However, dirt molecules are too large to pass through the mesh of the ceramic filter membrane 3 and remain on the ceramic filter membrane 3. Over time, dirt accumulates on the suction surface of the ceramic filter membrane 3. When the permeability of the ceramic filter membrane 3 decreases, it needs to be backwashed again, and this cycle continues.

[0045] like Figure 2 and Figure 3 As shown, in this embodiment, a plurality of guide rods 19 are provided between the two sealing rings 2, and the guide rods 19 slide in cooperation with the guide grooves 20 formed on the surface of the movable ring 7;

[0046] The above technical solution enables the movable ring 7 to move linearly along the guide rod 19, ensuring that the movable ring 7 moves stably without tilting or shaking, thus ensuring stable contact between the cleaning component and the suction surface of the ceramic filter membrane 3.

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the drive assembly includes: a lead screw 9 with one end rotatably connected to the sealing ring 2, the lead screw 9 cooperating with a lead screw groove 10 formed on the surface of the movable ring 7; and a drive source for driving the lead screw 9 to rotate forward and reverse.

[0048] The above technical solution can drive the movable ring 7 to rise and fall along the guide rod 19 by rotating the lead screw 9 in both directions. When in use, the drive source is started to drive the lead screw 9 to rotate in both directions. The lead screw 9 cooperates with the lead screw groove 10 on the surface of the movable ring 7, thereby driving the movable ring 7 to move relative to the ceramic filter membrane 3.

[0049] like Figure 4As shown, in this embodiment, the driving source includes: a recessed wall 13 located inside the filter box 1; a motor 11 located outside the filter box 1; a magnetic coupler main rotor 12 connected to the output shaft of the motor 11, the magnetic coupler main rotor 12 extending into the recessed groove of the recessed wall 13; a rotating sleeve 14 located outside the recessed wall 13, the inner side of the rotating sleeve 14 being provided with a magnetic coupler secondary rotor 15 adapted to the magnetic coupler main rotor 12; a driving bevel gear 16 fixedly connected to the rotating sleeve 14; a driven bevel gear 17 cooperating with the driving bevel gear 16, one end of the lead screw 9 passing through the sealing ring 2 and fixedly connected to the driven bevel gear 17;

[0050] The above technical solution allows the motor 11 to be installed externally. However, if the motor 11 is installed inside the filter box 1, it will occupy the internal space of the filter box 1, and the motor 11 may be damaged due to contact with water. The magnetic drive method can effectively solve this problem. In use, the motor 11 is started so that its output shaft drives the main rotor 12 of the magnetic coupler to rotate. Under the rule that like poles repel and unlike poles attract, the main rotor 12 of the magnetic coupler will drive the secondary rotor 15 of the magnetic coupler to rotate. The secondary rotor 15 of the magnetic coupler will drive the rotating sleeve 14 connected to it to rotate around the concave wall 13, thereby driving the drive bevel gear 16 connected to the rotating sleeve 14 to rotate. The drive bevel gear 16, in conjunction with the driven bevel gear 17, drives the lead screw 9 to rotate. The lead screw 9, in conjunction with the lead screw groove 10, drives the movable ring 7 to slide along the surface of the ceramic filter membrane 3.

[0051] like Figure 1 As shown, in this embodiment, there are two lead screws 9 arranged symmetrically about the movable ring 7, and a connecting rod 18 is provided between the driven bevel gears 17 of adjacent lead screws 9 for connecting the two.

[0052] The above technical solution can further improve the motion stability of the movable ring 7. By symmetrically setting the lead screws 9, the movable ring 7 can rise or fall under the drive of the two lead screws 9, and the force is more balanced, preventing skewing.

[0053] like Figure 5 As shown, in this embodiment, the upper end of the lead screw 9 passes through the sealing ring 2 and is fixedly connected to the driven bevel gear 17;

[0054] The above technical solution allows the drive component to be placed at the top, and during water purification, there is no need to worry about water leaking from the gap between the sealing ring 2 and the lead screw 9, ensuring that all water passes through the ceramic filter membrane 3.

[0055] like Figure 2 and Figure 3 As shown, in this embodiment, the cleaning component is a brush bristle 8 located inside the movable ring 7;

[0056] The bristles 8 can clean the ceramic filter membrane 3, the bristles 8 have certain flexibility, and can ensure full adhesion to the ceramic filter membrane 3 without scratching and damaging the ceramic filter membrane 3.

[0057] Working principle: in use, the pipeline assembly is controlled to make water enter the filter box 1 and contact the ceramic filter membrane 3 through the backwashing channel, the dirt on the suction surface of the ceramic filter membrane 3 is flushed out by the backwashing water, the dirt and the backwashing water are discharged from the filter box 1 through the water outlet end of the backwashing channel, the motor 11 is started to drive the magnetic coupler main rotor 12 to rotate, under the rules of same-pole repulsion and different-pole attraction, the magnetic coupler main rotor 12 drives the magnetic coupler secondary rotor 15 to rotate, the magnetic coupler secondary rotor 15 drives the rotating sleeve 14 connected thereto to rotate around the concave wall 13, thereby driving the driving bevel gear 16 connected to the rotating sleeve 14 to rotate, the driving bevel gear 16 drives the driven bevel gear 17 to drive the lead screw 9 to rotate, the lead screw 9 drives the movable ring 7 to slide along the surface of the ceramic filter membrane 3 in cooperation with the lead screw groove 10, the movable ring 7 drives the bristles 8 connected thereto to move synchronously, and the bristles 8 cooperate with the backwashing water to brush and wash the suction surface of the ceramic filter membrane 3, so that the dirt clogging in the mesh of the ceramic filter membrane 3 is effectively removed.

[0058] Those skilled in the art will understand that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the present application (including the claims) is limited to these examples; under the concept of the present application, the above embodiments or technical features in different embodiments can also be combined, steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0059] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.

Claims

1. A backwash structure of a ceramic membrane module, comprising: a filter tank (1); two sealing rings (2) oppositely arranged at the upper and lower ends of the filter tank (1); a ceramic filter membrane (3) connected with the two sealing rings (2) respectively, the ceramic filter membrane (3) being hollow inside and having ports at the two ends; a pipeline assembly for controlling water to enter a backwash channel in the filter tank (1); characterized in that the backwash structure further comprises: a movable ring (7) slidingly arranged on the side of the ceramic filter membrane (3) facing the suction surface and between the two sealing rings (2); a cleaning component arranged on the inner side of the movable ring (7) and in contact with the suction surface of the ceramic filter membrane (3); a driving assembly for driving the movable ring (7) to move relative to the ceramic filter membrane (3) so that the cleaning component cleans the mesh of the ceramic filter membrane (3).

2. The backflush structure of a ceramic membrane module according to claim 1, wherein A plurality of guide rods (19) are arranged between the two sealing rings (2), and the guide rods (19) are slidingly matched with guide grooves (20) arranged on the surface of the movable ring (7).

3. The backflushing structure of a ceramic membrane module according to claim 1 or 2, characterized by The driving assembly comprises: a lead screw (9) rotatably connected with the sealing ring (2), the lead screw (9) being matched with a lead screw groove (10) arranged on the surface of the movable ring (7); a driving source for driving the lead screw (9) to rotate forward and reverse.

4. The backflushing structure of a ceramic membrane module according to claim 3, wherein The driving source comprises: a recessed wall (13) arranged inside the filter tank (1); a motor (11) arranged outside the filter tank (1); a magnetic coupler main rotor (12) connected with the output shaft of the motor (11), the magnetic coupler main rotor (12) extending into a recessed groove of the recessed wall (13); a rotating sleeve (14) rotatably arranged outside the recessed wall (13), the inner side of the rotating sleeve (14) being provided with a magnetic coupler secondary rotor (15) matched with the magnetic coupler main rotor (12); a driving bevel gear (16) fixedly connected with the rotating sleeve (14); a driven bevel gear (17) matched with the driving bevel gear (16), one end of the lead screw (9) penetrating through the sealing ring (2) and being fixedly connected with the driven bevel gear (17).

5. The backflushing structure of a ceramic membrane module according to claim 4, wherein There are two lead screws (9) arranged symmetrically about the movable ring (7), and a connecting rod (18) is arranged between the driven bevel gears (17) of the adjacent lead screws (9) for connecting the two.

6. The backflushing structure of a ceramic membrane module according to claim 5, wherein The upper end of the lead screw (9) penetrates through the sealing ring (2) and is fixedly connected with the driven bevel gear (17).

7. The backflushing structure of a ceramic membrane module according to claim 1, wherein The cleaning component is a brush (8) arranged on the inner side of the movable ring (7).

8. The backflushing structure of a ceramic membrane module according to claim 1, wherein The pipeline assembly comprises: a first conduit (4) and a second conduit (6) arranged on one side of the upper end of the filter tank (1), the first conduit (4) being located above the upper sealing ring (2), and the second conduit (6) being located below the upper sealing ring (2); a third conduit (5) arranged at the lower end of the filter tank (1); control valves arranged in the first conduit (4), the third conduit (5) and the second conduit (6).

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