Detachable tube-mounted filter membrane element

Abstract

The utility model discloses a detachable tubular filter membrane element, which belongs to the technical field of environment-friendly sewage treatment and comprises a filter membrane unit, a membrane shell, a top end connecting unit and a water outlet connecting unit, the filter membrane unit comprises a hollow fiber membrane and water outlet cavities, the water outlet cavities are formed in the two ends of the hollow fiber membrane, the water outlets are formed in the side faces of the water outlet cavities, the water outlet pipe is connected with the water outlets, cavities in the inner side of the hollow fiber membrane are communicated with cavities of the water outlet cavities, and the filter membrane unit is arranged in the membrane shell. And the connector and the filter membrane unit in the membrane shell can be detached for cleaning, and can be mounted after cleaning, so that the cleaning operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to a filter membrane element, belonging to the field of environmental wastewater treatment technology, and in particular to a detachable tubular filter membrane element used in wastewater treatment projects. Background Technology

[0002] Currently, MBR (Mechanical Bioreactor) membranes are widely used in wastewater treatment, such as hollow fiber membranes, flat sheet membranes, and external tubular membranes submerged in the wastewater tank. The external tubular membrane bioreactor, or TMBR for short, is an MBR process mainly designed for treating high-concentration wastewater such as landfill leachate. It mainly consists of a biochemical system and an external tubular membrane system. It removes pollutants such as organic matter through biochemical reactions and separates sludge and water through the external tubular membrane, directly obtaining high-quality effluent. The concentrated water containing high-concentration sludge is returned to the wastewater tank. The external tubular membrane is set outside the wastewater tank and connected to the wastewater tank through a circulation pipeline. The pressure generated by the circulating water pump separates the sludge and water. Compared with submerged membranes set inside the wastewater tank, external tubular membranes are easier to operate and maintain.

[0003] External tubular filter membrane elements, such as Figure 7 As shown, it consists of an internal large-diameter filter membrane and an outer cylindrical membrane shell. The membrane shell is composed of a straight tube in the middle and connectors at both ends with a diameter larger than the straight tube in the middle. The outlet pipe is located at the connector. The large-diameter filter membrane, also called a tubular membrane, generally has a diameter between 5 mm and 15 mm. The large-diameter filter membrane is placed inside the membrane shell, and its two ends are fixedly connected to the connectors at both ends of the membrane shell through end caps. The end caps are provided with through holes that connect to the cavity inside the large-diameter filter membrane. The outlet pipe is located on the side of the connector. Wastewater passes through the membrane tube cavity of the tubular filter membrane, while clean water passes through the filter membrane, enters the space between the filter membrane and the membrane shell, and then flows out through the outlet pipe into the clear water tank.

[0004] The existing external tubular filter membrane elements have the following drawbacks: the filter membrane tubes become clogged and difficult to clean during operation.

[0005] When the cavity inside the large-diameter filter tube of an external tubular filter element becomes clogged and needs cleaning, the large-diameter filter tube inside cannot be removed because both ends are sealed. This makes cleaning very difficult, time-consuming, and laborious. Often, the large-diameter filter tube is punctured when a hard tubular object is inserted into it to clear the blockage, rendering the external tubular filter unusable. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a detachable tubular filter membrane element. The filter membrane of this device can be removed from the membrane housing and is easy to clean.

[0007] The technical scheme for solving the above problems of the utility model is: detachable pipe-mounted filter membrane element, its structure includes filter membrane unit, top end connecting unit, water outlet connecting unit and membrane shell; the membrane shell is composed of straight pipes in the middle and connecting heads at both ends, the filter membrane unit includes filter membrane and water outlet cavity, the water outlet cavity is arranged at both ends of the filter membrane, the middle part is a cavity, the water outlet is arranged on the side of the water outlet cavity and connected with the cavity, the inner side of the water outlet is provided with internal threads or the outer side is provided with external threads or is a smooth surface, the cavity in the filter membrane pipe is connected with the cavity of the water outlet cavity, the middle part of the water outlet pipe is connected with the connecting head, the upper part is arranged outside the connecting head, the lower part is arranged inside the connecting head, the lower part of the water outlet pipe is connected with the water outlet of the water outlet cavity; the top end connecting unit includes internal thread connecting unit and external thread connecting unit, the internal thread connecting unit includes screw rod and screw cap, the screw cap is arranged inside the connecting head of the membrane shell, the edge of the outward side of the water outlet cavity is provided with 20-100mm protruding flange, through holes or screw holes are arranged on the flange, the screw rod is connected with the screw cap on the connecting head through the through holes or screw holes on the flange, the external thread connecting unit includes screw rod, screw cap and connecting groove, the screw cap is arranged on the side of the water outlet cavity, or the connecting groove is arranged on the side of the water outlet cavity, which is annular groove with both sides protruding and the middle part recessed, through holes or screw holes are arranged on the connecting head, the screw rod is connected with the screw cap or the connecting groove on the side of the water outlet cavity through the through holes or screw holes on the connecting head; the water outlet connecting unit is internal sleeve pipe or external sleeve pipe or sealing ring or clamp, the internal sleeve pipe is arranged inside the water outlet pipe, the outer side of the lower part is provided with external threads and connected with the internal threads of the water outlet, the top of the internal sleeve pipe is provided with at least two grooves, the external sleeve pipe is arranged outside the outer side of the lower part of the connecting head and connected with the external threads of the water outlet, the sealing ring or clamp is arranged outside the connecting part of the water outlet pipe and the water outlet.

[0008] The filter membrane is a hollow fiber membrane.

[0009] The beneficial effects are:

[0010] The detachable pipe-mounted filter membrane element can be taken down when the membrane shell is blocked after running for a period of time, the filter membrane unit in the membrane shell is taken down, cleaned and then installed back, so that the cleaning operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0011] The detachable pipe-mounted filter membrane element is further described in combination with the drawings and embodiments.

[0012] Figure 1 It is a schematic view of the detachable pipe-mounted filter membrane element.

[0013] Figure 2Is detachable pipe installation type filter membrane element's connecting head and water outlet cavity top front surface of the schematic diagram of the utility model.

[0014] Figure 3 Is detachable pipe installation type filter membrane element's connecting head, inner screw connection unit and the schematic diagram of the utility model's inner sleeve side, the part of membrane shell, water outlet pipe, water outlet, water outlet cavity front surface is removed in the drawing.

[0015] Figure 4 Is detachable pipe installation type filter membrane element's connecting head, outer screw connection unit and the schematic diagram of the utility model's outer sleeve side, the part of membrane shell front surface is removed in the drawing.

[0016] Figure 5 Is detachable pipe installation type filter membrane element's filter membrane unit's schematic diagram.

[0017] Figure 6 Is detachable pipe installation type filter membrane element's running state's schematic diagram, the part of sewage pool and clean water pool front pool wall is removed in the drawing.

[0018] Figure 7 Is prior art external pipe type filter membrane element's schematic diagram, the part of membrane shell front surface is removed in the drawing.

[0019] In the drawing, 1 is straight pipe, 2 is hollow fiber membrane, 3 is water outlet pipe, 4 is water outlet, 5 is connecting groove, 6 is connecting head, 7 is screw rod, 8 is water outlet cavity, 9 is screw cap, 10 is head, 11 is support, 12 is front circulation pipe, 13 is circulating water pump, 14 is sewage pool, 15 is water production pipe, 16 is water production pump, 17 is clean water pool, 18 is rear circulation pipe, 19 is inner sleeve, 20 is convex edge, 21 is outer sleeve, 22 is large pipe diameter filter membrane. DETAILED DESCRIPTION

[0020] The structure and characteristics of detachable pipe installation type filter membrane element of the utility model are described in detail as follows:

[0021] Detachable pipe installation type filter membrane element, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The structure of the filter membrane element includes a filter membrane unit, a top end connecting unit, a water outlet connecting unit and a membrane shell; the membrane shell is composed of a straight pipe in the middle and connecting heads at both ends; the filter membrane unit includes a filter membrane and a water outlet cavity, the water outlet cavity is arranged at both ends of the filter membrane, the middle part is a cavity, a water outlet is arranged on the side of the water outlet cavity and connected with the cavity, the inner side of the water outlet is provided with an inner thread or the outer side is provided with an outer thread or is a smooth surface, the cavity in the middle of the filter membrane is connected with the cavity of the water outlet cavity, the middle part of the water outlet pipe is connected with the connecting head, the upper part is arranged outside the connecting head, and the lower part is arranged inside the connecting head; the top end connecting unit includes an inner screw connecting unit and an outer screw connecting unit; the inner screw connecting unit includes a screw rod and a screw cap, the screw cap is arranged inside the connecting head of the membrane shell, the edge of the outward side of the water outlet cavity is provided with a convex edge protruding by 20-100mm, a through hole or a screw hole is arranged on the convex edge, the screw rod is connected with the screw cap on the connecting head through the through hole or the screw hole on the convex edge, the outer screw connecting unit includes a screw rod, a screw cap and a connecting groove, the screw cap is arranged on the side of the water outlet cavity, or the connecting groove is arranged on the side of the water outlet cavity, which is an annular groove protruding on both sides and recessed in the middle, a through hole or a screw hole is arranged on the connecting head, and the screw rod is connected with the screw cap or the connecting groove on the side of the water outlet cavity through the through hole or the screw hole on the connecting head; the water outlet connecting unit is an inner sleeve pipe, an outer sleeve pipe, a sealing ring or a clamp, the inner sleeve pipe is arranged inside the water outlet pipe, the outer thread is arranged on the outer side of the lower part and connected with the inner thread of the water outlet, at least two grooves are arranged on the top of the inner sleeve pipe, the outer sleeve pipe is arranged outside the water outlet pipe and connected with the outer thread of the water outlet, and the sealing ring or the clamp is arranged outside the connection between the water outlet pipe and the water outlet.

[0022] The filter membrane is a hollow fiber membrane.

[0023] The principle and operation process of the detachable pipe-mounted filter membrane element will be described in detail below with reference to the drawings:

[0024] The detachable pipe-mounted filter membrane element is installed on the support, for example, Figure 6The front circulation pipe is connected with a circulating water pump and a sewage pool, the water outlet pipe is connected with a water production pump through a water production pipe, the liquid outlet of the water production pump is connected with a clean water pool through a pipeline, the circulating water pump is opened to make the sewage in the sewage pool enter the front circulation pipe and the connecting head, the sewage flows through the gap between the top connecting unit, the water outlet cavity and the membrane shell, enters the membrane shell, and contacts the hollow fiber membrane, the water production pump is opened to make the sewage in the membrane shell pass through the hollow fiber membrane through negative pressure suction, pollutants are intercepted outside the hollow fiber membrane, and the clean water enters the cavity of the hollow fiber membrane, enters the water outlet cavity, and then enters the clean water pool through the water outlet pipe, the water production pipe and the water production pump, and the sewage in the membrane shell returns to the sewage pool through the rear circulation pipe, since the hollow fiber membrane and the large-diameter filter membrane have the same membrane pore diameter range, which is generally between 0.02 and 0.4 microns, only the diameter of the hollow fiber membrane is smaller than that of the large-diameter filter membrane, which is generally between 1 millimeter and 5 millimeters, and the same treatment effect as the large-diameter filter membrane can be achieved.

[0025] When the filter membrane unit in the membrane shell is blocked, the operation is stopped, the detachable pipe-mounted filter membrane element of the utility model is disconnected with the connected pipeline, the screw rod on the top connecting unit and the inner sleeve pipe or the outer sleeve pipe or the sealing ring or the clamp of the water outlet connecting unit are removed to separate the membrane shell, then the filter membrane unit is taken out of the membrane shell, the inside of the membrane shell and the hollow fiber membrane are washed with water, then the hollow fiber membrane is regenerated and cleaned with an acidic or alkaline agent, after the cleaning is completed, the filter membrane unit is installed into the membrane shell again, the screw rod on the top connecting unit and the water outlet connecting unit are installed back to the original position, the screw rod is tightened, the inner sleeve pipe or the outer sleeve pipe or the sealing ring or the clamp of the water outlet connecting unit is restored to the original position, then the membrane shell is connected with the pipeline again, and the operation can be continued.

[0026] The above only describes preferred embodiments of the utility model, and it should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the technical principles of the utility model, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A detachable tubular filter membrane element, an improvement on external tubular filter membrane elements, mainly composed of a filter membrane unit and a membrane housing; characterized in that: The structure comprises a filter membrane unit, a top end connecting unit, a water outlet connecting unit and a membrane shell; the membrane shell is composed of a straight pipe in the middle and connecting heads at both ends; the filter membrane unit comprises a filter membrane and a water outlet cavity, the water outlet cavity is arranged at both ends of the filter membrane, the middle part is a cavity, a water outlet is arranged on the side of the water outlet cavity and connected to the cavity, the inner side of the water outlet is provided with an inner thread or the outer side is provided with an outer thread or is a smooth surface, the cavity in the middle of the filter membrane is connected to the cavity of the water outlet cavity, the middle part of the water outlet pipe is connected to the connecting head, the upper part is arranged outside the connecting head, and the lower part is arranged inside the connecting head; the lower part of the water outlet pipe is connected to the water outlet of the water outlet cavity; the top end connecting unit comprises an inner screw connecting unit and an outer screw connecting unit; the inner screw connecting unit comprises a screw rod and a screw cap, the screw cap is arranged inside the connecting head of the membrane shell, a convex edge is arranged on the edge of the outward side of the water outlet cavity, the convex edge is provided with a through hole or a screw hole, the screw rod is connected to the screw cap on the connecting head through the through hole or the screw hole on the convex edge, the outer screw connecting unit comprises a screw rod, a screw cap and a connecting groove, the screw cap is arranged on the side of the water outlet cavity, or the connecting groove is arranged on the side of the water outlet cavity, the connecting groove is an annular groove with convex edges on both sides and a concave middle part, the connecting head is provided with a through hole or a screw hole, and the screw rod is connected to the screw cap or the connecting groove on the side of the water outlet cavity through the through hole or the screw hole on the connecting head; the water outlet connecting unit is an inner sleeve, an outer sleeve, a sealing ring or a clamp, the inner sleeve is arranged inside the water outlet pipe, the outer side of the lower part is provided with an outer thread, and the inner thread of the water outlet is connected; the top part of the inner sleeve is provided with at least two grooves, the outer sleeve is arranged outside the lower part of the water outlet pipe in the connecting head, and the outer thread of the water outlet is connected; the sealing ring or the clamp is arranged outside the connection between the water outlet pipe and the water outlet.

2. The detachable tubular filtration membrane element according to claim 1, characterized in that: The filter membrane is a hollow fiber membrane.

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