Filter screen device for tubular ultrafiltration membrane

Abstract

The utility model relates to the technical field of tubular ultrafiltration membrane, specifically relates to a filter screen device for tubular ultrafiltration membrane, including inlet pipe, locking assembly, filter assembly, flange part, installation pipe, the locking assembly includes the first locking portion of setting in the installation pipe and the second locking portion of setting in the filter assembly, the first locking portion includes the multiple limit baffle of annular interval arrangement, the second locking portion includes the multiple locking plate of annular interval arrangement in the circumferential side of filter assembly, wherein, multiple limit baffle between form multiple first gap, and when the first locking portion with the second locking portion is not locked, every first gap place all correspond to a locking plate, and when the first locking portion with the second locking portion is locked, multiple limit baffle and multiple locking plate limit locking and every limit baffle one -to -one corresponding locking have a locking plate, the utility model significantly improves structural strength and impact resistance, prolongs the life simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of tubular ultrafiltration membrane technology, and specifically to a filter screen device for tubular ultrafiltration membranes. Background Technology

[0002] Ultrafiltration membrane technology has become the mainstream water treatment technology due to its core advantages of high efficiency separation, low consumption and environmental protection, and strong tolerance, especially in the fields of leachate, kitchen waste biogas slurry and reclaimed water reuse.

[0003] Leachate refers to high-concentration organic or inorganic wastewater generated during the landfill or dumping of waste due to physical, chemical, and biological processes. Food waste biogas slurry refers to the high-ammonia nitrogen liquid phase and reclaimed water after anaerobic digestion of food waste. Although they come from different sources, they all share common characteristics such as high suspended solids, multiple forms of impurities, high COD content, and large fluctuations in water quality.

[0004] The initial filter screen treatment process of traditional tubular ultrafiltration membranes has the following shortcomings:

[0005] 1. Poor filtration efficiency: Traditional filtration methods cannot intercept small-sized shell debris, humic colloids and other impurities, which leads to the tubular ultrafiltration membrane channel being blocked by impurities, resulting in membrane flux reduction. In addition, traditional filter screens are inconvenient to disassemble, clean and replace.

[0006] 2. Structural defects: Thin-walled filter screens are prone to breakage and detachment under fiber entanglement or impact from high solid waste, causing secondary pollution. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a tubular ultrafiltration membrane filter device to improve filtration efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] This utility model provides a filter screen device for a tubular ultrafiltration membrane, including: an inlet pipe, a locking assembly, a filter assembly, a flange, and an installation pipe;

[0010] The flange is used to lock the inlet pipe and the mounting pipe. The filter assembly is disposed on the flange via the locking assembly and is located inside the mounting pipe.

[0011] The locking assembly includes a first locking part disposed on the mounting tube and a second locking part disposed on the filter assembly. The first locking part includes a plurality of limiting baffles arranged in a ring at intervals, and the second locking part includes a plurality of locking plates arranged in a ring at intervals around the filter assembly. A plurality of first gaps are formed between the plurality of limiting baffles. When the first locking part and the second locking part are not locked, each first gap corresponds to a locking plate. When the first locking part and the second locking part are locked, the plurality of limiting baffles are limited and locked to the plurality of locking plates, and each limiting baffle is locked to a locking plate.

[0012] In some embodiments, the filter assembly includes a steel plate, a filter screen body, and a rotating handle, wherein the filter screen body is fixedly connected to the steel plate, a plurality of locking plates are circumferentially spaced on the periphery of the steel plate, and the rotating handle is welded to the filter screen body.

[0013] In some embodiments, the filter body and the steel plate are integrally formed.

[0014] In some embodiments, the filter body has a thickness of 2 mm, a pore size of 1–3 mm, a length of 130–300 mm, and a diameter of 73–260 mm.

[0015] In some embodiments, the locking assembly further includes a guide portion, the guide portion including a first guide portion disposed on the locking plate and a second guide portion disposed on the limiting baffle, wherein during the locking process between the first locking portion and the second locking portion, the first guide portion is used to guide the second guide portion at all times.

[0016] In some embodiments, the first guide portion includes a groove, and the second guide portion includes a boss.

[0017] In some embodiments, the flange portion includes a first flange and a second flange, wherein the first flange is fixedly connected to the water inlet pipe, the second flange is connected to the mounting pipe, and the first flange and the second flange are fixedly connected by bolts.

[0018] In some embodiments, the locking assembly further includes a locking pin, wherein a locking plate has a pin hole that penetrates the groove, and after the first locking part and the second locking part are locked, a limiting baffle corresponding to the locking plate with the pin hole has a mating hole. The mating hole penetrates the limiting baffle and the boss on the limiting baffle. When the first locking part and the second locking part are locked, the pin hole and the mating hole are on the same straight line. The locking pin passes through the pin hole and the mating hole in sequence and is fixedly connected to the limiting baffle to limit the boss and the groove.

[0019] In some embodiments, a water outlet pipe is also included, which is connected to the installation pipe via a copy forest.

[0020] In some embodiments, an annular sealing plate is further included, which is disposed on the periphery of the opening in the steel plate that communicates with the mounting pipe, for sealing the gap between the steel plate and the second flange.

[0021] Furthermore, the beneficial effects of this utility model are as follows:

[0022] This utility model incorporates a locking component, specifically a first locking part and a second locking part that rotate and lock together. During locking, the locking plate and the limiting baffle engage through rotation. The entire operation requires only manual rotation and locking, making the process simple and effective, enabling quick disassembly, cleaning, and replacement. Furthermore, the welding between the filter body and the steel plate significantly enhances structural strength and impact resistance. Combined with a 1-3mm pore size design, it effectively blocks large suspended particles, preventing ultrafiltration membrane clogging and physical damage. Simultaneously, it expands the filter area and dirt-holding capacity, extending its service life. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of the tubular ultrafiltration membrane filter screen device provided by this utility model;

[0024] Figure 2 A schematic diagram of the second flange portion in the tubular ultrafiltration membrane filter device provided by this utility model;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 Rear view of the second flange in the tubular ultrafiltration membrane filter device provided by this utility model;

[0027] Figure 5 A schematic diagram of the locking plate and the limiting baffle in the tubular ultrafiltration membrane filter device provided by this utility model;

[0028] Figure 6 A schematic diagram of the filter component in the tubular ultrafiltration membrane filter device provided by this utility model;

[0029] Figure 7 An explosion diagram of the tubular ultrafiltration membrane filter screen device provided by this utility model when the locking pin, limit baffle, and locking plate are not in contact;

[0030] Figure 8 A partial structural cross-sectional view of the tubular ultrafiltration membrane filter device provided by this utility model, showing the locking pin in conjunction with the limiting baffle and locking plate.

[0031] In the diagram: 1-Inlet pipe, 2-Installation pipe, 3-Outlet pipe, 4-Filter screen body, 5-Rotating handle, 6-Limit baffle, 7-Locking plate, 8-First flange, 9-Second flange, 10-Copy ring, 11-Boss, 12-First gap, 13-Groove, 14-Steel plate, 15-Annular sealing plate, 16-Locking pin, 17-Pin hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the description of the embodiments of the present utility model, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. In addition, in the description of the embodiments of the present utility model, "multiple" means two or more. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this utility model, unless otherwise stated, "multiple" means two or more.

[0033] like Figures 1-8 As shown, this utility model embodiment provides a filter screen device for a tubular ultrafiltration membrane, including: an inlet pipe 1, a locking assembly, a filter assembly, a flange, and an installation pipe 2;

[0034] The flange is used to lock the inlet pipe 1 and the mounting pipe 2. The filter assembly is set on the flange through the locking assembly and is located inside the mounting pipe 2.

[0035] The locking assembly includes a first locking part disposed on the mounting tube 2 and a second locking part disposed on the filter assembly. The first locking part includes a plurality of circumferentially spaced limiting baffles 6, and the second locking part includes a plurality of circumferentially spaced locking plates 7. A plurality of first gaps 12 are formed between the plurality of limiting baffles 6. When the first locking part and the second locking part are not locked, each first gap 12 corresponds to a locking plate 7. When the first locking part and the second locking part are locked, the plurality of limiting baffles 6 and the plurality of locking plates 7 are interposed. The locking plate 7 is locked in place, and each limiting baffle 6 is locked in place with a corresponding locking plate 7. The filter assembly includes a steel plate 14, a filter screen body 4, and a rotating handle 5. The filter screen body 4 is fixedly connected to the steel plate 14. Multiple locking plates 7 are arranged in a ring at intervals around the steel plate 14. The rotating handle 5 is welded to the filter screen body 4. The filter screen body 4 and the steel plate 14 are integrally formed. The filter screen body 4 has a thickness of 2mm, a hole diameter of 1-3mm, a length of 130-300mm, and a diameter of 73-260mm.

[0036] In this embodiment, the flange portion includes a first flange 8 and a second flange 9. The first flange 8 is fixedly connected to the water inlet pipe 1, and the second flange 9 is connected to the mounting pipe 2. The first flange 8 and the second flange 9 are fixedly connected by bolts. The thickness of the first flange 8 and the second flange 9 is 4mm, the outer diameter is 200-395mm, the center hole distance is 160-350mm, the inner diameter is 73-260mm, and the opening size and number are M16 / M20×8 / 12. They are compatible with steel pipes of 1.0Mpa size and DN80 / DN100 / DN150 / DN200 / DN250 specifications. Among them, the outer diameter of DN80 is 200mm, the center hole distance is 160mm, the inner diameter is 73-78mm, and the opening size and number are M16×8 / 12. 8; DN100 has an outer diameter of 220mm, a center hole distance of 180mm, an inner diameter of 91~96mm, and an opening size and number of M16×8; DN150 has an outer diameter of 285mm, a center hole distance of 240mm, an inner diameter of 141~146mm, and an opening size and number of M20×8; DN200 has an outer diameter of 340mm, a center hole distance of 295mm, an inner diameter of 201~206mm, and an opening size and number of M20×8; DN250 has an outer diameter of 395mm, a center hole distance of 350mm, and an inner diameter of 255~260mm. After aligning the holes of the first flange 8 and the second flange 9, long bolts are used for fastening. A rubber sealing gasket with a suitable opening is added between the two flanges to ensure sealing performance and prevent leakage. After installation, the wastewater to be treated is introduced into the pipeline system. The wastewater flows into the primary filter screen body 4 through the pipeline for filtration and separation. The filtered water flows into the outlet pipe 3 from the sides and front end of the filter screen body 4. Suspended impurities with a particle size greater than 1mm in the wastewater are trapped in the primary filter screen body 4.

[0037] Furthermore, the filter body 4 adopts the aforementioned values. The 1-3mm pore size design increases the water flow area, reduces the flow pressure, and decreases the water flow impact force, effectively intercepting suspended solids with a diameter ≥1mm. This prevents large particles from directly impacting the ultrafiltration membrane surface, avoiding membrane pore blockage or physical damage, and significantly reducing the cleaning frequency. The 130-300mm length provides the filter body 4 with a larger surface area and dirt holding capacity, extending the cleaning cycle. The equal diameter design reduces water pressure loss and avoids the situation where the valve cannot operate normally when using a wafer butterfly valve. The 2mm thickness design enhances the mechanical strength of the filter body 4, improves its impact resistance, and extends its service life.

[0038] In addition, it should be noted that this utility model also includes a pressure sensor, which is located at the front end of the filter body 4. Furthermore, this utility model also periodically cleans and maintains the filter body 4, with specific triggering conditions categorized into three types:

[0039] 1. Time-cycle trigger: The cleaning cycle is preset according to the characteristics of the incoming water quality. When the system runs for the predetermined time, the sewage in the pipe is drained, the initial filter screen body 4 is disassembled for cleaning and damage inspection, and after the cleaning is qualified, it is reinstalled and the system operation is restored.

[0040] 2. Flow threshold trigger: As the amount of sewage in the pipeline continues to accumulate, the total amount of impurities trapped increases, the filtration load gradually increases, resulting in a decrease in the flow rate of filtered water. When the measured flow rate drops to the preset threshold, the system stops supplying water. After the sewage in the pipeline is drained, the initial filter screen body 4 is disassembled for cleaning, and the filter screen body 4 is checked for damage at the same time. After cleaning, it is reinstalled and the system water supply is restored.

[0041] 3. Pressure sensor threshold trigger: As sewage continues to accumulate, the total amount of impurities trapped increases, the filtration load gradually rises, causing the water pressure at the front end of the filter screen to rise. When the measured pressure rises to the preset threshold, the system stops water supply. After the sewage in the pipe is drained, the initial filter screen body 4 is disassembled for cleaning. At the same time, check whether the filter screen body 4 is damaged. After cleaning, it is reinstalled and the system water supply is restored.

[0042] It is also worth noting that if the filter body 4 is damaged during operation, the filter body 4 should be replaced immediately. After installation, the system should be restored to operation and enter the next operating cycle.

[0043] In one possible implementation, the locking assembly further includes a guide portion, comprising a first guide portion disposed on the locking plate 7 and a second guide portion disposed on the limiting baffle 6. During the locking process between the first locking portion and the second locking portion, the first guide portion serves to guide the second guide portion at all times. The first guide portion includes a groove 13, and the second guide portion includes a boss 11. The locking assembly also includes a locking pin 16, wherein one of the locking plates 7 has a pin hole 17 penetrating the groove 13, and the first locking portion and the second locking portion... After the two locking parts are locked, the limiting baffle 6, which corresponds to the locking plate 7 with the pin hole 17, has a mating hole. The mating hole passes through the limiting baffle 6 and the boss 11 on the limiting baffle 6. When the first locking part and the second locking part are locked, the pin hole 17 and the mating hole are on the same straight line. The locking pin 16 passes through the pin hole 17 and the mating hole in sequence and is fixedly connected to the limiting baffle 6 to limit the boss 11 and the groove 13. The locking pin 16 can be threaded, snap-fit, or interference-fit. This application does not make specific limitations in this regard.

[0044] In the above structure, the boss 11 and the groove 13 are slidably connected. As shown in the figure, both the boss 11 and the groove 13 are arc-shaped structures. The arc-shaped structure ensures that the boss 11 and the groove 13 will not separate during the rotation and locking process of the locking plate 7 and the limiting baffle 6. At the same time, the slidingly connected boss 11 and groove 13 not only play a guiding role, but also improve the stability of the locking plate 7 and the limiting baffle 6 during the limiting process.

[0045] One possible implementation also includes an outlet pipe 3 and an annular sealing plate 15. The outlet pipe 3 is connected to the installation pipe 2 via a copying ring 10. The annular sealing plate 15 is disposed on the periphery of the opening in the steel plate 14 that connects to the installation pipe 2, and is used to seal the gap between the steel plate 14 and the second flange 9 to improve the overall airtightness. An ultrafiltration tubular membrane is connected to the outlet pipe 3.

[0046] In this invention, the locking plate 7 and the limiting baffle 6 are engaged by rotation during locking. The entire operation is achieved through manual rotation and locking, which is simple and effective, enabling quick disassembly, cleaning, and replacement. At the same time, the welding between the filter body 4 and the steel plate 14 significantly improves the structural strength and impact resistance. Combined with the 1-3mm pore size design, it can effectively block large suspended particles, prevent ultrafiltration membrane clogging and physical damage, and at the same time expand the filter area and dirt holding capacity, extending its service life.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A filter screen device for a tubular ultrafiltration membrane, characterized in that, include: Inlet pipe, locking assembly, filter assembly, flange, mounting pipe; The flange is used to lock the inlet pipe and the mounting pipe. The filter assembly is disposed on the flange via the locking assembly and is located inside the mounting pipe. The locking assembly includes a first locking part disposed on the mounting tube and a second locking part disposed on the filter assembly. The first locking part includes a plurality of limiting baffles arranged in a ring at intervals, and the second locking part includes a plurality of locking plates arranged in a ring at intervals around the filter assembly. A plurality of first gaps are formed between the plurality of limiting baffles. When the first locking part and the second locking part are not locked, each first gap corresponds to a locking plate. When the first locking part and the second locking part are locked, the plurality of limiting baffles are limited and locked to the plurality of locking plates, and each limiting baffle is locked to a locking plate.

2. The tubular ultrafiltration membrane filter device as described in claim 1, characterized in that, The filter assembly includes a steel plate, a filter screen body, and a rotating handle, wherein the filter screen body is fixedly connected to the steel plate, a plurality of locking plates are arranged in a ring at intervals around the steel plate, and the rotating handle is welded to the filter screen body.

3. The tubular ultrafiltration membrane filter device as described in claim 2, characterized in that, The filter screen body and the steel plate are integrally formed.

4. The tubular ultrafiltration membrane filter device as described in claim 2, characterized in that, The filter body has a thickness of 2mm, a pore size of 1-3mm, a length of 130-300mm, and a diameter of 73-260mm.

5. The tubular ultrafiltration membrane filter device as described in claim 1, characterized in that, The locking assembly also includes a guide portion, which includes a first guide portion disposed on the locking plate and a second guide portion disposed on the limiting baffle, wherein during the locking process between the first locking portion and the second locking portion, the first guide portion is used to guide the second guide portion at all times.

6. The tubular ultrafiltration membrane filter device as described in claim 5, characterized in that, The first guide portion includes a groove, and the second guide portion includes a boss.

7. The tubular ultrafiltration membrane filter device as described in claim 2, characterized in that, The flange includes a first flange and a second flange, wherein the first flange is fixedly connected to the water inlet pipe, and the second flange is connected to the mounting pipe, and the first flange and the second flange are fixedly connected by bolts.

8. The tubular ultrafiltration membrane filter device as described in claim 6, characterized in that, The locking assembly also includes a locking pin. One of the locking plates has a pin hole that passes through the groove. After the first locking part and the second locking part are locked, a matching hole is provided on the limiting baffle corresponding to the locking plate with the pin hole. The matching hole passes through the limiting baffle and the boss on the limiting baffle. When the first locking part and the second locking part are locked, the pin hole and the matching hole are on the same straight line. The locking pin passes through the pin hole and the matching hole in sequence and is fixedly connected to the limiting baffle to limit the boss and the groove.

9. The tubular ultrafiltration membrane filter device as described in claim 1, characterized in that, It also includes a water outlet pipe, which is connected to the installation pipe via a copy tube.

10. The tubular ultrafiltration membrane filter device as described in claim 7, characterized in that, It also includes an annular sealing plate, which is disposed on the periphery of the opening in the steel plate that connects to the mounting pipe, and is used to seal the gap between the steel plate and the second flange.

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