Amino acid nanofiltration membrane filtering equipment

Abstract

The utility model discloses amino acid nanofiltration membrane filtering equipment which comprises a filter cartridge, a top cover is fixedly connected to the top of the filter cartridge, a feeding pipe is fixedly connected to the center of the top of the top cover, a base is arranged at the bottom of the filter cartridge, and a locking ring is arranged on the outer wall of the base and the outer wall of the filter cartridge. A sealing ring is fixedly connected to the center of the top of the base, and a filter membrane assembly is arranged at the center of the bottom of the top cover. According to the utility model, the filter cartridge, the filter membrane component, the sealing ring and the screw rod are matched with one another, and the gravitational potential energy of amino acid fermentation liquor is matched with centrifugal force generated when the screw rod falls, so that the fermentation liquor can be circularly impacted on the nanofiltration membrane, the fermentation liquor can be filtered, and filtered solid impurities can be recycled. The nanofiltration membrane can be flushed out along with the high fluidity of the fermentation waste liquid, so that impurity accumulation on the nanofiltration membrane is effectively reduced, and the phenomenon that the nanofiltration membrane is blocked due to impurity accumulation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nanofiltration membrane filtering equipment, in particular to amino acid nanofiltration membrane filtering equipment. Background Art

[0002] Amino acid fermentation broths often contain impurities such as colloidal particles, bacteria, and proteins. Nanofiltration membranes are primarily used in amino acid production for impurity removal and concentration and purification. The selective separation of nanofiltration membranes effectively removes these impurities, improving purification efficiency.

[0003] During the filtration process of amino acid nanofiltration membrane, impurities are likely to accumulate on the nanofiltration membrane. Over time, it is easy to cause clogging of the nanofiltration membrane, thereby affecting the filtration efficiency of the amino acid fermentation broth.

[0004] To this end, we proposed to design an amino acid nanofiltration membrane filtration equipment. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] An amino acid nanofiltration membrane filtration device comprises a filter cartridge, wherein a top cover is fixedly connected to the top of the filter cartridge, a feed pipe is fixedly connected to the center of the top of the top cover, a base is provided at the bottom of the filter cartridge, a locking ring is provided on the base and the outer wall of the filter cartridge, a sealing ring is fixedly connected to the center of the top of the base, and a filter membrane assembly is provided at the center of the bottom of the top cover;

[0008] The filter membrane assembly includes an inner grid and an outer grid fixedly connected to the inner top of the top cover, a cavity is provided between the inner grid and the outer grid, a nanofiltration membrane body is provided inside the cavity, and a spiral rod is provided at the center of the inner grid.

[0009] As a preferred solution of the amino acid nanofiltration membrane filtration equipment described in the present invention, a bracket is fixedly connected to the inner wall of the base, and the sealing ring is fixedly connected to the center of the top of the bracket to facilitate the fixation of the sealing ring. The through holes around the bracket are connected to the inside of the filter cartridge and the space between the inner wall of the filter cartridge and the outer grid to facilitate the discharge of the liquid filtered by the nanofiltration membrane.

[0010] As a preferred solution of the amino acid nanofiltration membrane filtration equipment described in the utility model, a fixing ring is fixedly connected to the outer wall of the filter cylinder near the bottom, and a connecting ring is fixedly connected to the outer edge of the top of the base. The fixing ring is threadedly connected to the outer wall of the connecting ring and the locking ring to facilitate disassembly and assembly of the base.

[0011] As a preferred solution of the amino acid nanofiltration membrane filtration equipment described in the utility model, the bottom of the feed pipe passes through the top cover and is connected to the interior of the inner grid. A discharge port is provided at the central opening of the base, and the discharge port is connected to the interior of the inner grid, so as to facilitate the discharge of liquid that has not been filtered by the nanofiltration membrane.

[0012] As a preferred solution of the amino acid nanofiltration membrane filtration equipment described in the present invention, the sealing ring extends into the cavity, and the two sides of the sealing ring are tightly fitted with the inner grid and the outer grid respectively, which is convenient for positioning the nanofiltration membrane body and sealing the cavity.

[0013] As a preferred solution of the amino acid nanofiltration membrane filtration equipment described in the present invention, the outer walls at both ends of the spiral rod are fixedly connected with connecting rods, and the connecting rods are fixedly connected to the inner wall of the inner grid, so as to facilitate fixing the spiral rod inside the inner grid.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model cooperates with each other among the filter cartridge, the filter membrane assembly, the sealing ring and the spiral rod, and uses the gravitational potential energy of the amino acid fermentation liquid and the centrifugal force generated by the spiral rod when it falls, so that the fermentation liquid can be circulated and impacted on the nanofiltration membrane. Not only can the fermentation liquid be filtered, but the solid impurities filtered out can also be flushed out together with the high fluidity of the fermentation liquid waste, effectively reducing the accumulation of impurities on the nanofiltration membrane, thereby reducing the occurrence of clogging of the nanofiltration membrane caused by impurity accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive labor. Among them:

[0017] Figure 1 This is a three-dimensional diagram of an amino acid nanofiltration membrane filtration device of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a filter cartridge of an amino acid nanofiltration membrane filtration device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a membrane component of an amino acid nanofiltration membrane filtration device of the present invention.

[0020] Legend: 1. Filter cartridge; 2. Top cover; 3. Feed pipe; 4. Base; 401. Bracket; 5. Sealing ring; 6. Fixing ring; 7. Connecting ring; 8. Locking ring; 9. Filter membrane assembly; 901. Inner grid; 902. Outer grid; 903. Cavity; 904. Nanofiltration membrane body; 905. Screw rod; 10. Connecting rod. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] See also Figure 1-3 The utility model provides an amino acid nanofiltration membrane filtration device, including a filter cartridge 1, a top cover 2 is fixedly connected to the top of the filter cartridge 1, a feed pipe 3 is fixedly connected to the center of the top of the top cover 2, and a base 4 is provided at the bottom of the filter cartridge 1.

[0025] The inner wall of the base 4 is fixedly connected to the bracket 401, and the sealing ring 5 is fixedly connected to the top center of the bracket 401, which is convenient for fixing the sealing ring 5. The through holes around the bracket 401 are connected to the inside of the filter cartridge 1 and the space between the inner wall of the filter cartridge 1 and the outer grid 902, which is convenient for discharging the liquid filtered by the nanofiltration membrane.

[0026] The base 4 and the outer wall of the filter cartridge 1 are jointly provided with a locking ring 8. A fixing ring 6 is fixedly connected to the outer wall of the filter cartridge 1 near the bottom. A connecting ring 7 is fixedly connected to the outer edge of the top of the base 4. The outer walls of the fixing ring 6 and the connecting ring 7 are threadedly connected to the locking ring 8 to facilitate disassembly and assembly of the base 4.

[0027] A sealing ring 5 is fixedly connected to the center of the top of the base 4, and a filter membrane assembly 9 is provided at the center of the bottom of the top cover 2.

[0028] The filter membrane assembly 9 includes an inner grid 901 and an outer grid 902 fixedly connected to the top inner portion of the top cover 2. The bottom of the feed pipe 3 passes through the top cover 2 and is connected to the interior of the inner grid 901. A discharge port is provided at the central opening of the base 4, and the discharge port is connected to the interior of the inner grid 901, so as to facilitate the discharge of liquid that has not been filtered by the nanofiltration membrane.

[0029] A cavity 903 is provided between the inner grid 901 and the outer grid 902 , and the sealing ring 5 extends into the cavity 903 . Both sides of the sealing ring 5 are tightly fitted with the inner grid 901 and the outer grid 902 , respectively, to facilitate positioning of the nanofiltration membrane body 904 and sealing of the cavity 903 .

[0030] A nanofiltration membrane body 904 is provided inside the cavity 903, and a spiral rod 905 is provided at the center of the inner grid 901, wherein the outer walls at both ends of the spiral rod 905 are fixedly connected with connecting rods 10, and the connecting rods 10 are fixedly connected to the inner wall of the inner grid 901, so as to facilitate fixing the spiral rod 905 inside the inner grid 901.

[0031] During use, the amino acid fermentation liquid is introduced through the feed pipe 3 and directly impacts the spiral blades of the screw rod 905 after entering the filter cartridge 1 , and flows along the spiral blades.

[0032] During the falling process, under the action of centrifugal force, most of the amino acid fermentation liquid will be thrown onto the inner grid 901, and the amino acids filtered by the nanofiltration membrane body 904 will be discharged from the through holes around the bracket 401, while the remaining fermentation liquid that has not been filtered by the nanofiltration membrane body 904 and the solid impurities inside will be discharged together from the discharge port, and the staff can collect them separately at this time.

[0033] When discharging, this device mainly utilizes the potential energy generated by the free fall of the liquid, combined with the centrifugal force generated by the screw rod 905, so that the filtered solid impurities can maintain fluidity under the flow of the amino acid fermentation liquid waste, making it easy to discharge the solid impurities and effectively reducing the blockage of the nanofiltration membrane caused by the accumulation of impurities.

[0034] At the same time, if the nanofiltration membrane in this device needs to be replaced, the locking ring 8 can be directly unscrewed and the base 4 can be disassembled to quickly replace the nanofiltration membrane. The operation is simple, fast and time-saving.

[0035] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. An amino acid nanofiltration membrane filtration device, comprising a filter cartridge (1), characterized in that: The top of the filter cartridge (1) is fixedly connected to a top cover (2), the center of the top of the top cover (2) is fixedly connected to a feed pipe (3), the bottom of the filter cartridge (1) is provided with a base (4), the base (4) and the outer wall of the filter cartridge (1) are jointly provided with a locking ring (8), the center of the top of the base (4) is fixedly connected to a sealing ring (5), and the center of the bottom of the top cover (2) is provided with a filter membrane assembly (9); The filter membrane assembly (9) includes an inner grid (901) and an outer grid (902) fixedly connected to the inner top of the top cover (2), a cavity (903) is provided between the inner grid (901) and the outer grid (902), a nanofiltration membrane body (904) is provided inside the cavity (903), and a spiral rod (905) is provided at the center of the inner grid (901).

2. An amino acid nanofiltration membrane filtration device according to claim 1, characterized in that, The inner wall of the base (4) is fixedly connected to a bracket (401), the sealing ring (5) is fixedly connected to the center of the top of the bracket (401), and the through holes around the bracket (401) are all connected to the inside of the filter cartridge (1).

3. An amino acid nanofiltration membrane filtration device according to claim 1, characterized in that, A fixing ring (6) is fixedly connected to the outer wall of the filter cartridge (1) near the bottom, a connecting ring (7) is fixedly connected to the top outer edge of the base (4), and the outer walls of the fixing ring (6) and the connecting ring (7) are threadedly connected to a locking ring (8).

4. An amino acid nanofiltration membrane filtration device according to claim 1, characterized in that, The bottom of the feed pipe (3) passes through the top cover (2) and is connected to the interior of the inner grid (901); a discharge port is provided at the central opening of the base (4), and the discharge port is connected to the interior of the inner grid (901).

5. An amino acid nanofiltration membrane filtration device according to claim 1, characterized in that, The sealing ring (5) extends into the interior of the cavity (903), and two sides of the sealing ring (5) are tightly fitted to the inner grid (901) and the outer grid (902) respectively.

6. An amino acid nanofiltration membrane filtration device according to claim 1, characterized in that, The outer walls at both ends of the spiral rod (905) are fixedly connected to connecting rods (10), and the connecting rods (10) are fixedly connected to the inner wall of the inner grid (901).

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