Membrane filtration structure

Abstract

The utility model provides a membrane filtration structure, and aims to solve the technical problems that the existing primary saline water membrane filtration is open, the quality of saline water is easily influenced by external impurities, and the cost is high by adopting pure water liquid seal. The structure comprises a filtering main body, the filtering main body is internally provided with a membrane assembly, the membrane assembly divides the filtering main body into a clear liquid cavity and a dirty liquid cavity, and the top of the clear liquid cavity is open; the dustproof cover is movably arranged at the top of the clear liquid cavity; the dust cover is provided with a concave cavity which is concavely arranged from one end of the clear liquid cavity to the other end of the clear liquid cavity. The dust cover covers the top of the filtering main body, so that external impurities can be prevented from polluting saline water, saline water steam is prevented from corroding equipment pipelines, consumption of pure water is reduced, white water is prevented from entering a system to be evaporated, and steam consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane filtration, in particular to a membrane filtration structure. Background Art

[0002] Primary brine membrane filtration is a crucial step in the brine refining process. It primarily uses membrane separation technology to remove impurities such as suspended matter, organic matter, and microorganisms from the brine, thereby improving its purity and quality. Currently, primary brine membrane filtration is open, allowing for the entry of external impurities that could affect brine quality. Brine vapor can also corrode pipes and equipment. To prevent contamination of the brine by external impurities and corrosion of equipment and pipes by brine vapor, pure water is typically added periodically to the water surface for liquid sealing. This pure water is then drawn back into the system for evaporation, resulting in wasteful material and high costs. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a membrane filtration structure, which solves the technical problems that the existing primary brine membrane filtration is open and external impurities easily affect the quality of brine and / or the cost of using pure water liquid seal is high.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A membrane filtration structure comprises: a filter body, in which a membrane assembly is arranged, the membrane assembly divides the filter body into a clear liquid chamber and a dirty liquid chamber, the top of the clear liquid chamber is open; a dust cover, movably arranged on the top of the clear liquid chamber; the dust cover has a concave cavity arranged from one end of the clear liquid chamber to the other end.

[0006] The utility model covers the dust cover on the top of the filter body, which not only isolates the brine from being polluted by external impurities and prevents the brine vapor from corroding the equipment pipes, but also eliminates the need for pure water liquid seals, which is beneficial to reducing pure water consumption, preventing white water from entering the system and evaporating, and reducing steam consumption.

[0007] Optionally, the membrane assembly is a SF membrane assembly, and the SF membrane assembly is suspended inside the filter body through a flower plate; a backwash tank is provided below one side of the filter body.

[0008] Optionally, the dust cover includes a fixing ring, a cover body arranged on the fixing ring, and a plurality of frames for supporting the cover body.

[0009] Optionally, the diameter of the fixing ring is adapted to the diameter of the clear liquid cavity, one end of the skeleton is connected to the fixing ring, the skeleton is a curved structure, multiple skeletons are surrounded to form a bowl shape, and the cover body is arranged on the skeleton.

[0010] Optionally, there are six skeletons, and the six skeletons are arranged at equal intervals; the cover body is covered with a dustproof cloth.

[0011] Optionally, a fixing seat is provided on the upper surface of the filter body, and the outer side of the fixing seat abuts against the inner side of the fixing ring.

[0012] Optionally, the fixing base includes a base plate and a vertical plate disposed on the upper surface of the base plate, wherein the lower surface of the base plate is connected to the upper surface of the filter body, and the vertical plate is disposed on the upper surface of the base plate. The vertical plate has an inclined surface and an abutment on a side close to the fixing ring, and the abutment is squeezed and connected to the inner wall of the fixing ring. The abutment is squeezed and connected to the inner wall of the fixing ring, which helps prevent the dust cover from moving during use and increases its stability.

[0013] Optionally, the membrane filtration structure further includes a spray assembly comprising: an annular tube disposed on the inner side of the top of the filter body; a plurality of water spray outlets provided on the annular tube, the water spray outlets being evenly spaced along the annular tube; a water inlet pipe connected to the annular tube at one end; and a water pump mounted on the water inlet pipe for pumping pure water into the annular tube; wherein the fixing ring and the cover are provided with notches to avoid the water inlet pipe. This helps to expand the scope of application of the filtration structure and can be selected according to needs during use.

[0014] Optionally, the annular tube is arranged on the inner side of the top of the filter body through a fixing seat, the outer side of the fixing seat abuts against the inner side of the fixing ring, and the lower surface of the bottom plate of the fixing seat is connected to the upper surface of the filter body and the annular tube.

[0015] Optionally, a first shielding cloth and a second shielding cloth are provided on the inner walls on both sides of the gap, and magnets that can be attracted are respectively provided on the sides where the first shielding cloth and the second shielding cloth are close to each other, and through holes for the water inlet pipe to pass through are provided on the upper ends of the first shielding cloth and the second shielding cloth.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model covers the dust cover on the top of the filter body, which not only isolates the brine from being polluted by external impurities and prevents the brine vapor from corroding the equipment pipes, but also eliminates the need for pure water liquid seals, which is beneficial to reducing pure water consumption, preventing white water from entering the system and evaporating, and reducing steam consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of an embodiment of the membrane filtration structure of the utility model

[0020] Figure 2 The structure of the dust cover in this utility model is shown as follows Figure 1 .

[0021] Figure 3 The structure of the dust cover in this utility model is shown as follows Figure 2 .

[0022] Figure 4 This is a structural diagram of Example 3.

[0023] Figure 5 for Figure 4 Schematic diagram of the decomposition structure.

[0024] Figure 6 This is a schematic structural diagram of an embodiment of the fixing seat in the present utility model.

[0025] Figure numerals: 1. Filter body; 1a. Clear liquid cavity; 1b. Dirty liquid cavity; 11. Flower plate; 12. Recoil tank; 13. Liquid level tank; 2. Dust cover; 2a. Concave cavity; 21. Fixing ring; 22. Cover body; 23. Frame; 24. First shielding cloth; 25. Second shielding cloth; 3. Spray assembly; 31. Annular pipe; 311. Water outlet; 32. Water inlet pipe; 33. Water pump; 4. Fixing seat; 41. Bottom plate; 42. Vertical plate; 421. Inclined surface; 422. Abutment portion. DETAILED DESCRIPTION

[0026] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0027] In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this utility model application, "plurality" means two or more, unless otherwise specifically defined.

[0029] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection, indirect connection through an intermediate medium, or internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0030] In the embodiments of the present utility model application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below", and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figures 1 to 3 As shown, the embodiment of the present utility model application provides a membrane filtration structure, including a filter body 1 and a dust cover 2 movably arranged on the filter body 1.

[0035] The top of the filter body 1 is an open clear liquid chamber 1a. The dust cover 2 is structurally compatible with the filter body 1. The dust cover 2 is removably mounted on the top of the filter body 1. The dust cover 2 is recessed from one end of the filter body 1 to the other end, forming a bowl-shaped structure with an open end, or an arched cross-section. When in use, the dust cover 2 is placed on the top of the filter body 1 to isolate external impurities from contaminating the salt water and salt water vapor from corroding the equipment pipes. Instead of periodically adding pure water to the water surface for liquid sealing, it reduces pure water consumption, prevents white water from entering the system and evaporating, and reduces steam consumption.

[0036] In practical applications, reference Figure 1As shown, the membrane filtration structure also includes a membrane assembly, a backwash tank, a pipeline, an automatic control valve, an automatic control system, a startup control system, etc. Optionally, the membrane assembly is an SF membrane assembly, which is suspended in the dirty flow chamber and fixed on the flower plate 11 at the top, separating the clear liquid chamber 1a and the dirty liquid chamber 1b into two independent parts. The clear liquid chamber 1a is open, and the dust cover 2 is arranged above the clear liquid chamber 1a. A backwash tank 12 is connected to the bottom of one side of the filter body 1, and the outlet of the backwash tank 12 has a downward elbow and a straight pipe section of more than one meter to ensure smooth flow of the backwash liquid. When in use, the raw liquid enters the dirty liquid chamber of the filter through a pump or a high-level gravity flow through a flexible valve, and then the raw liquid passes through the surface of the SF membrane, and the clear liquid enters the upper clear liquid chamber from the center hole of the SF membrane core, and then flows to the clear liquid storage tank through the clear liquid pipe of the liquid level tank 13, and the solid particles in the raw liquid are blocked on the membrane surface. After a filtration cycle, when the filter cake on the SF membrane reaches a certain amount, the membrane filter automatically enters the backwashing and membrane cleaning state. The automatic valves automatically switch, and the filter liquid in the filter's clear liquid chamber flows back from the center of the membrane into the dirty liquid chamber. The filter cake is pushed off the membrane surface and settles to the bottom of the filter cone. The membrane filter automatically enters the next filtration, backwashing, and sedimentation cycle. Finally, when the filter cake at the bottom of the cone reaches a certain amount, the valve opens to discharge the filter cake, and the filter enters the next cycle.

[0037] Example 2

[0038] The present invention provides a membrane filtration structure according to the embodiment 1. Figure 2 and Figure 3 As shown, in this embodiment, the dust cover 2 includes a fixing ring 21 , a cover body 22 and a frame 23 .

[0039] The fixing ring 21 is adapted to the structure of the filter body 1 with a circular cross-section, that is, the fixing ring is annular and its diameter is adapted to the diameter of the clear liquid cavity 1a. When in use, the fixing ring 21 can be placed on the upper surface of the filter body 1.

[0040] The cover body 22 is arranged on the fixing ring 21 through a frame 23 . The frame 23 is used to support the cover body 22 and arch the cover body 22 , thereby forming a bowl-shaped cavity 2 a inside the cover body 22 .

[0041] More specifically, the skeleton 23 comprises multiple skeletons, one end of which is connected to the fixing ring 21. The skeleton 23 has a curved structure, and the multiple skeletons 23 surround the fixing ring 21 to form a bowl-like shape. In one implementation scenario, the cover 22 is positioned over the skeleton 23, with its open end connected to the fixing ring 21. In another implementation scenario, a cover is connected between two skeletons 23, and the end closest to the fixing ring 21 is connected to the fixing ring 21.

[0042] Optionally, there are six skeletons 23 , which are distributed in an annular manner on the fixing ring 21 at equal intervals.

[0043] Optionally, the cover body 22 is made of dustproof cloth.

[0044] In this embodiment, by covering the dust cover 2 on the top of the filter body 1, not only can the brine be isolated from external impurities and contaminated, and the brine vapor can be prevented from corroding the equipment pipes, thus achieving a primary brine pollution prevention; moreover, the use of pure water liquid seal is no longer required, which is conducive to reducing pure water consumption, preventing white water from entering the system and evaporating, and reducing steam consumption. At present, when the membrane filter is in use, it is usually necessary to add 5 cm (0.14 m) of water to each membrane filter every 4 hours. 3 ) Pure water liquid seal, add 6 times a day, 4 membrane filters add 0.14*4*6=3.36m per day 3 Assuming 350 days per year, the steam consumption for evaporating one ton of brine is 60 kg, and the electricity consumption is 43 kW.h. Based on the steam price of 235 yuan / ton, the pure water price of 2.31 yuan, and the electricity cost of 0.5 yuan / kWh, the improvement can save about 44,500 yuan per year (steam cost savings: 3.36*350*60 / 1000*235=16,581.6 yuan, electricity cost savings: 3.36*350*43*0.5=25,284 yuan, and pure water cost savings: 3.36*350*2.31=2,716.56 yuan).

[0045] Example 3

[0046] like Figure 4 and Figure 5 As shown, the embodiment of the present utility model application provides a membrane filtration structure. Based on embodiment 1 or embodiment 2, the membrane filtration structure further includes a spray component 3.

[0047] The spray assembly 3 includes an annular pipe 31 , a water inlet pipe 32 and a water pump 33 .

[0048] An annular tube 31 is disposed on the inner side of the top of the filter body 1 and is provided with a plurality of water spray ports 311, which are evenly spaced along the annular tube 31. A water inlet pipe 32 is connected to the annular tube 31 at one end and to an external water source at the other end. A water pump 33 is mounted on the water inlet pipe 32 and pumps liquid into the annular tube 31 and sprays it out of the water spray ports 311. When in use, the water spray ports 311 direct the liquid toward the inside of the filter body 1, and the liquid forms an arched jet.

[0049] Furthermore, a notch is provided on the dust cover 2, which is formed on the fixing ring 21 and the cover body 22. When the dust cover 2 is covered on the filter body 1, the water inlet pipe 32 is just located in the notch. The notch can avoid the water inlet pipe 32, and the water inlet pipe 32 can also restrict the dust cover 2 to prevent it from moving and increase stability.

[0050] Optionally, the water inlet pipe 32 is L-shaped, one end of which is connected to the annular pipe 31 and the other end extends to the outside of the filter body 1. The notch on the dust cover 2 is adapted to the water inlet pipe 32, that is, the notch can accommodate the water inlet pipe.

[0051] In this embodiment, the spray assembly 3 and the dust cover that can be used in conjunction with the water inlet pipe are conducive to improving the scope of application of the filtering structure. When in use, it can be selected according to needs, such as: closing the dust cover on the filter body and / or starting the water pump. Using the dust cover can save costs. Under special needs, a pure water liquid seal can also be used, or the dust cover and the pure water liquid seal can be used simultaneously to improve the brine pollution prevention effect. Of course, the structure of the dust cover in this embodiment is also conducive to adapting to existing filtering equipment, and is easy to use and low in cost. That is to say, in this embodiment, the filter body 1 and the spray assembly 3 can be existing structures, on which a corresponding dust cover 2 is added to achieve one-time brine pollution prevention and pure water and steam consumption.

[0052] In one embodiment, a first shielding cloth 24 and a second shielding cloth 25 are disposed on the inner walls of both sides of the notch. Attractable magnets are disposed on the adjacent sides of the first and second shielding cloths 24, 25. Through holes are provided at the upper ends of the first and second shielding cloths 24, 25 for the passage of the water inlet pipe 32. The arrangement of the first and second shielding cloths in this embodiment enhances the effectiveness of isolating external impurities.

[0053] Example 4

[0054] The present invention provides a membrane filtration structure according to any of the above embodiments. Figure 5 and Figure 6 As shown, a fixing seat 4 is provided on the upper surface of the filter body 1 .

[0055] In one embodiment, the outer side of the fixing seat 4 abuts against the inner side of the fixing ring 21 of the dust cover 2, which helps to prevent the dust cover 2 from moving and increase its stability.

[0056] In another embodiment, when the spray assembly 3 is set, the annular tube 31 is fixed to the inner side of the upper end of the filter body 1 through the fixing seat 4, and the outer side of the fixing seat 4 abuts against the inner side of the fixing ring 21 of the dust cover 2, which is beneficial to prevent the dust cover 2 from moving and increase its stability.

[0057] Optionally, the fixing seats 4 are arranged in pairs relative to each other, and at least one group of fixing seats is provided on the filter body 1 .

[0058] In one embodiment, the fixing seat 4 includes a base plate 41 and a vertical plate 42 arranged on the upper surface of the base plate 41. The lower surface of the base plate 41 is connected to the upper surface of the filter body 1 or to the upper surface of the filter body 1 and the annular tube 31. The vertical plate 42 is fixed on the upper surface of the base plate 41. The side of the vertical plate 42 close to the fixing ring 21 has a slope 421 and an abutment 422. The height of the base plate 41 and the abutment 422 is adapted to the height of the fixing ring 21, and the abutment 422 is squeezed and connected to the inner side of the fixing ring 21.

[0059] Parts not described in detail in this embodiment are well-known technologies in the art.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A membrane filtration structure, characterized in that: include: A filter body (1) is provided with a membrane assembly inside, wherein the membrane assembly separates the filter body (1) into a clear liquid chamber (1a) and a dirty liquid chamber (1b), and the top of the clear liquid chamber (1a) is open; A dust cover (2) movably arranged on the top of the clear liquid chamber (1a); The dust cover (2) has a concave cavity (2a) that is recessed from one end of the clear liquid cavity (1a) toward the other end.

2. The membrane filtration structure according to claim 1, characterized in that The membrane assembly is an SF membrane assembly, which is suspended inside the filter body (1) through a flower plate (11); a backwash tank (12) is provided below one side of the filter body (1).

3. The membrane filtration structure according to claim 1 or 2, characterized in that The dust cover (2) comprises a fixing ring (21), a cover body (22) arranged on the fixing ring (21), and a plurality of frames (23) for supporting the cover body (22).

4. The membrane filtration structure according to claim 3, characterized in that The diameter of the fixing ring (21) is adapted to the diameter of the clear liquid cavity (1a); one end of the frame (23) is connected to the fixing ring (21); the frame (23) is a curved structure; multiple frames (23) surround to form a bowl-shaped structure; and the cover (22) is arranged on the frame (23).

5. The membrane filtration structure according to claim 4, characterized in that There are six skeletons (23), and the six skeletons (23) are arranged at equal intervals; the cover body (22) is made of a dustproof cloth cover.

6. The membrane filtration structure according to claim 3, characterized in that A fixing seat (4) is provided on the upper surface of the filter body (1), and the outer side of the fixing seat (4) abuts against the inner side of the fixing ring (21).

7. The membrane filtration structure according to claim 6, characterized in that The fixing seat (4) comprises a bottom plate (41) and a vertical plate (42) arranged on the upper surface of the bottom plate (41); the lower surface of the bottom plate (41) is connected to the upper surface of the filter body (1); the vertical plate (42) is arranged on the upper surface of the bottom plate (41); the vertical plate (42) has an inclined surface (211) and an abutting portion (212) on a side close to the fixing ring (21); the abutting portion (212) is extruded and connected to the inner wall of the fixing ring (21).

8. The membrane filtration structure according to claim 3, characterized in that The membrane filtration structure further comprises a spray assembly (3), wherein the spray assembly (3) comprises: An annular tube (31) is arranged on the inner side of the top of the filter body (1); The annular tube (31) is provided with a plurality of water spraying ports (311), and the water spraying ports (311) are distributed at equal intervals along the annular tube (31); A water inlet pipe (32), one end of which is connected to the annular pipe (31); A water pump (33) is installed on the water inlet pipe (32) and is used to pump pure water into the annular pipe (31); Wherein, the fixing ring (21) and the cover body (22) are provided with a gap for avoiding the water inlet pipe (32).

9. The membrane filtration structure according to claim 8, characterized in that The annular tube (31) is arranged on the inner side of the top of the filter body (1) through a fixing seat (4), the outer side of the fixing seat (4) abuts against the inner side of the fixing ring (21), and the lower surface of the bottom plate (41) of the fixing seat (4) is connected to the upper surface of the filter body (1) and the annular tube (31).

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