Tube filter element with replaceable membrane tube

Abstract

The application discloses a tube-mounted filter membrane element with replaceable membrane tube, and belongs to the technical field of environment-friendly sewage treatment, comprising a filter membrane unit, a sealing head, a clamping spring, a sealing ring and a membrane shell; the filter membrane unit comprises a tubular membrane and a membrane head pipe, the membrane head pipe is arranged at two ends of the tubular membrane and fixedly connected with the tubular membrane, two annular grooves are arranged on the side surface of the membrane head pipe, the sealing ring is arranged on the annular groove on the inner side, and the filter membrane unit is arranged in the membrane shell; when the inside of the membrane shell is blocked, the clamping spring on the annular groove of the membrane head pipe of the blocked tubular membrane is taken down, the tubular membrane in the membrane shell is taken down, and cleaning is carried out; after the cleaning is completed, the tubular membrane is installed back, the cleaning operation is simple and convenient.

Description

Technical Field

[0001] This invention relates to a filter membrane element, belonging to the field of environmental wastewater treatment technology, and in particular to a tubular filter membrane element with replaceable membrane tubes that can be used in wastewater treatment projects. Background Technology

[0002] Currently, MBR filtration membranes are widely used in wastewater treatment, such as external tubular membrane filters. External tubular membrane bioreactors, or TMBR for short, are a type of MBR process mainly designed for treating high-concentration wastewater such as landfill leachate. They mainly consist of a biological system and an external tubular membrane filter system. The biological system removes pollutants such as organic matter, while the external tubular membrane filters separate sludge and water, directly producing high-quality effluent. The concentrated effluent containing high-concentration sludge is returned to the wastewater tank. The external tubular membrane filter is installed outside the wastewater tank and connected to it through a circulation pipeline. The pressure generated by the circulating water pump separates the sludge and water. Compared to submerged membrane filters installed inside the wastewater tank, external tubular membrane filters are easier to operate and maintain.

[0003] External tubular filter membrane elements, such as Figure 5 As shown, it consists of an internal tubular 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 that of the straight tube in the middle. The outlet pipe is located on the connector. The diameter of the tubular membrane is generally between 5 mm and 15 mm. The tubular 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 tubular membrane. The outlet pipe is located on the side of the connector. Wastewater passes through the membrane tube cavity of the tubular filter membrane, and 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.

[0004] The shortcomings of existing external tubular filter membrane elements are: the tubular filter membrane tubes are fixedly installed during operation, making cleaning difficult when the tubes become clogged.

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

[0006] To address the shortcomings of existing technologies, this invention provides a tubular filter element with a replaceable membrane tube. The tubular membrane tube of this device can be removed from the membrane housing for easy cleaning.

[0007] The technical solution of this invention to solve the above problems is: a tubular filter element with replaceable membrane tubes, the structure of which includes a filter membrane unit, end caps, snap rings, nuts, sealing rings, and a membrane housing; the filter membrane unit includes a tubular membrane and a membrane head tube, the membrane head tube is located at both ends of the tubular membrane and is fixedly connected to the tubular membrane, and has two annular grooves on its outer side; the filter membrane unit is located inside the membrane housing, the middle part of the membrane housing is a straight tube, and both ends are provided with connectors with a diameter 50 mm to 100 mm larger than the middle straight tube; the outlet pipe is located on the connector; the end cap is fixedly connected to the connector, and has a through hole; the membrane head tube of the filter membrane unit is located in the through hole of the end cap; the annular groove near the top of the membrane head tube protrudes outside the through hole of the end cap; the snap ring is located on the annular groove near the top of the membrane head tube, or an annular groove is located on the outer side of the membrane head tube near the membrane tube, and an external thread is provided on the side near the top; the nut is located on the side of the membrane head tube near the top; and the sealing ring is located on the annular groove near the membrane tube or on the outside of the through hole of the end cap. Its beneficial effects are:

[0008] After the tubular filter element of this invention, whose membrane tube can be replaced individually, has been running for a period of time, if the inside of the membrane housing becomes clogged, the retaining spring on the annular groove of the clogged tubular membrane head tube can be removed, the tubular membrane inside the membrane housing can be removed, cleaned, and then reinstalled. The cleaning operation is simple and convenient. Attached Figure Description

[0009] The tubular filter membrane element of the present invention, with its individually replaceable membrane tube, will be further described in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 This is a schematic diagram of the tubular filter membrane element of the present invention, in which the membrane tube can be replaced individually. The front membrane shell part has been removed from the diagram.

[0011] Figure 2 This is a schematic diagram showing the side cross-section of the connector, filter unit, and end cap of the tubular filter element of the present invention, which allows for individual replacement of the membrane tube.

[0012] Figure 3 This is a schematic diagram of the filter membrane unit of the tubular filter membrane element of the present invention, which allows for individual replacement of the membrane tube.

[0013] Figure 4 This is a schematic diagram of the retaining spring of the tubular filter membrane element of the present invention, which allows for individual replacement of the membrane tube.

[0014] Figure 5 This is a schematic diagram of an existing external tubular filter membrane element, with the membrane housing portion on the front side removed.

[0015] In the diagram, 1 is a straight pipe, 2 is a tubular membrane, 3 is an outlet pipe, 4 is a sealing ring, 5 is a snap ring, 6 is a connector, 7 is a membrane head tube, 8 is an annular groove, 9 is a through hole, 10 is a sealing head, and 11 is a nut. Detailed Implementation

[0016] The structure and features of the tubular filter membrane element of the present invention, which allows for individual replacement of the membrane tube, are described in detail below with reference to the accompanying drawings:

[0017] Tubular filter elements with individually replaceable membrane tubes, such as Figure 1 , Figure 2 , Figure 3 As shown: Its structure includes a filter membrane unit, end caps, snap rings, nuts, sealing rings, and a membrane housing. The filter membrane unit includes a tubular membrane and a membrane head tube. The membrane head tubes are located at both ends of the tubular membrane and are fixedly connected to it. Two annular grooves are provided on its outer side. The filter membrane unit is located inside the membrane housing. The middle part of the membrane housing is a straight tube, and both ends are provided with connectors with a diameter 50 mm to 100 mm larger than the middle straight tube. The outlet pipe is located on the connector. The end caps are fixedly connected to the connectors and have through holes. The membrane head tube of the filter membrane unit is located inside the through hole of the end cap. The annular groove near the top of the membrane head tube protrudes outside the through hole of the end cap. A snap ring is also included. Figure 4 As shown; an annular groove is provided on the membrane head tube near the top, or an annular groove is provided on the outer side of the membrane head tube near the membrane tube. An external thread is provided on the side near the top of the membrane head tube. The nut is provided on the side of the membrane head tube near the top. The sealing ring is provided on the annular groove near the membrane tube or on the outside of the end cap through hole facing outwards. The principle and operation of the tubular filter membrane element with replaceable membrane tube of the present invention are described in detail below with reference to the accompanying drawings:

[0018] When the filter unit inside the membrane housing becomes clogged, stop operation. Disconnect the tubular filter element (which allows for individual membrane tube replacement) from the connected pipeline. Locate the clogged tubular membrane tube. Remove the retaining spring or nut from the outside of the clogged membrane tube at one end. Then, remove the membrane from the other side and clean it from the outside of the membrane housing. After cleaning, reinstall the membrane, and then reposition the retaining spring or nut. Finally, reconnect the membrane housing to the pipeline to resume operation.

[0019] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tubular filter membrane element with a replaceable membrane tube, which is an improvement on external tubular filter membrane elements, mainly composed of a filter membrane unit and a membrane housing; characterized in that: Its structure includes a filter membrane unit, end caps, snap rings, nuts, sealing rings, and a membrane housing. The filter membrane unit includes a tubular membrane and a membrane head tube. The membrane head tubes are located at both ends of the tubular membrane and are fixedly connected to it. Two annular grooves are provided on its outer side. The filter membrane unit is located inside the membrane housing. The middle part of the membrane housing is a straight tube, and the two ends are provided with connectors with a diameter 50 mm to 100 mm larger than the middle straight tube. The outlet pipe is located on the connector. The end caps are fixedly connected to the connectors and have through holes. The membrane head tube of the filter membrane unit is located in the through hole of the end cap. The annular groove near the top of the membrane head tube protrudes outside the through hole of the end cap. The snap ring is located on the annular groove near the top of the membrane head tube, or an annular groove is provided on the outer side of the membrane head tube near the tubular membrane tube, with an external thread on the side near the top. The nut is located on the side of the membrane head tube near the top. The sealing ring is located on the annular groove near the tubular membrane tube or on the outside of the through hole of the end cap.

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