A kind of L-valine fermentation liquid filtering device

Abstract

The utility model discloses a fermentation liquid filtering device for L-valine, and belongs to the technical field of filtering devices. A fermentation liquid filtering device for L-valine comprises a pretreatment cylinder and a filter cylinder, wherein the lower end of the pretreatment cylinder is fixedly connected to the upper end of the filter cylinder, a receiving bottom is arranged inside the pretreatment cylinder, a discharge cone is arranged at the center of the receiving bottom, and a sealing cone is arranged on the lower surface of the discharge cone. The utility model discloses a fermentation liquid filtering device for L-valine, wherein the pretreatment cylinder is cleverly designed, the sealing cone is controlled to rotate by a first motor, and the alignment or misalignment state of the discharge hole is flexibly adjusted, so as to facilitate the acidification operation of the fermentation liquid above the receiving bottom, ensure that the pH value is adjusted to a suitable range, and provide good conditions for subsequent filtration, and the filter cylinder adopts a multi-stage filtration design, including a conical coarse filter, a rotating inner cylinder and a conical ultrafiltration membrane.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, and more specifically to a filtering device for L-valine fermentation liquid. Background Art

[0002] At present, in the processing of L-valine, a plate and frame filter is generally used to filter the material, that is, a filter cloth is arranged on the plate frame, and the liquid material is filtered through the filter cloth. Since the plate and frame filter is fully open, impurities are easily mixed into the material during the filtration process, thereby affecting the product quality. In addition, the filtration purity of the plate and frame filter is not high and cannot meet high-standard usage occasions.

[0003] The Chinese patent with publication number CN207221483U discloses a fermentation liquid filtering device for L-valine, which can reduce the resistance during stirring by using stirring blades, can preliminarily filter the fermentation liquid by using an activated carbon layer, and can further filter the fermentation liquid by using a filter membrane. However, in this patent, the filtration levels are arranged horizontally, and the efficiency of the fermentation liquid entering the next filtration level from the previous filtration level is low. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provides a device for filtering L-valine fermentation liquid to solve the above deficiencies.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0006] A device for filtering L-valine fermentation liquid comprises a pretreatment cylinder and a filter cylinder, wherein the lower end of the pretreatment cylinder is fixedly connected to the upper end of the filter cylinder, the pretreatment cylinder is used for acidifying the L-valine fermentation liquid, and the filter cylinder performs multi-stage filtration on the acidified fermentation liquid, a receiving bottom is arranged inside the pretreatment cylinder, a discharge cone surface is arranged at the center position of the receiving bottom, a sealing cone surface is arranged on the lower surface of the discharge cone surface, and the filter cylinder comprises a fixed outer cylinder, a motor cylinder, and a conical coarse filter screen, a rotating inner cylinder and a conical ultrafiltration membrane that filter in sequence.

[0007] Preferably, discharge holes are provided at equal distances on the discharge cone surface and the sealing cone surface. When the discharge holes on the discharge cone surface and the sealing cone surface are aligned, the filtrate above the receiving bottom passes through the receiving bottom and enters the filter cartridge. When the discharge holes on the discharge cone surface and the sealing cone surface are misaligned, the receiving bottom is blocked and the upper end surface of the sealing cone surface is fixedly connected to a rotating shaft.

[0008] Preferably, a first motor is connected to the top of the pretreatment cylinder, and the first motor is fixedly connected to the rotating shaft to drive the rotating shaft to rotate and control the sealing cone surface to adjust the position. A filtered liquid inlet and an acid solution inlet are provided on the top of the pretreatment cylinder, and a drain outlet is connected to the side wall of the pretreatment cylinder above the receiving bottom to drain backwash water.

[0009] Preferably, a liquid inlet is provided at the upper end of the fixed outer cylinder, the liquid inlet is communicated with the pretreatment cylinder, a rotating inner cylinder is movably connected to the fixed outer cylinder below the liquid inlet, the lower end of the rotating inner cylinder is movably connected to the motor cylinder, and the motor cylinder supports the lower end of the rotating inner cylinder.

[0010] Preferably, a second motor is arranged in the motor cylinder, the output end of the second motor is connected to the rotating inner cylinder, the upper end of the rotating inner cylinder is engaged with the inner wall of the fixed outer cylinder, the second motor drives the rotating inner cylinder to rotate centrifugally, the rotating inner cylinder is made of microporous ceramic filter material, and the centrifugal motion quickly removes larger particles of suspended matter.

[0011] Preferably, a slide groove is provided on the side wall of the rotating inner cylinder, and the slide groove is engaged with the conical coarse filter screen.

[0012] Preferably, the conical coarse filter provides a larger filtration area, can quickly achieve filtration, and the filtered impurities can gather to the lower end of the conical coarse filter under the impact of gravity and the filtrate, avoiding clogging of the conical coarse filter. The lower end edge of the conical coarse filter is connected to a conical water collecting ring, which forms a top surface at the upper end of the rotating inner cylinder to prevent the filtrate from overflowing upward during centrifugation. The conical coarse filter is fixedly connected to the liquid inlet by a fixing rod to fix the position of the conical coarse filter.

[0013] Preferably, the conical ultrafiltration membrane is connected to the upper edge of the motor cylinder, and the fixed outer cylinder is placed below the conical ultrafiltration membrane and is provided with a liquid pump and a backwash inlet. The liquid pump can extract the filtrate passing through the conical ultrafiltration membrane and accelerate the filtrate to pass through the conical ultrafiltration membrane. The backwash inlet passes the backwash water into the fixed outer cylinder.

[0014] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] The utility model proposes a fermentation liquid filtration device for L-valine, in which the filter cartridge adopts a multi-stage filtration design, including a conical coarse filter, a rotating inner cylinder and a conical ultrafiltration membrane. Each stage of the filtration unit processes impurities of different particle sizes, gradually removes large particles, suspended matter and soluble impurities, and ensures the quality of the final clear liquid. The filtrate is conducted by gravity, and the filtration efficiency is high. The rotating inner cylinder adopts microporous ceramic material and combines centrifugal motion, which can quickly remove suspended matter of larger particles, significantly improve the filtration efficiency, reduce the filtration resistance, and extend the service life of the filter assembly. The design of the conical coarse filter and the conical ultrafiltration membrane provides a larger filtration area, effectively reducing the filtration load per unit area. In addition, the conical structure allows impurities to gather to the bottom under the action of gravity to avoid clogging the filter screen. The entire device has a compact structure, and the pretreatment cartridge and the filter cartridge are designed as an integrated whole, which not only meets the process requirements, but also saves installation space, and is suitable for industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an internal structure diagram of the L-valine fermentation liquid filtering device of the utility model;

[0017] Figure 2 This is the internal structure diagram of the fixed outer cylinder of the utility model;

[0018] Figure 3 This is a structural diagram of the connection between the rotating inner cylinder and the pretreatment cylinder of the utility model;

[0019] Figure 4 This is a structural diagram of the pretreatment cylinder of the utility model.

[0020] In the figure: 1. pretreatment cylinder; 11. receiving bottom; 12. discharge cone; 121. discharge hole; 13. sealing cone; 131. rotating shaft; 14. first motor; 15. drain outlet; 2. filter cylinder; 21. fixed outer cylinder; 211. liquid pump; 212. backwash inlet; 22. rotating inner cylinder; 221. chute; 23. conical coarse filter; 231. conical water collecting ring; 232. fixed rod; 24. conical ultrafiltration membrane; 25. motor cylinder; 251. second motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Combination Figure 1-Figure 4 The utility model discloses an L-valine fermentation liquid filtering device, comprising a pretreatment cylinder 1 and a filter cylinder 2, wherein the lower end of the pretreatment cylinder 1 is fixedly connected to the upper end of the filter cylinder 2, the pretreatment cylinder 1 is used for acidifying the L-valine fermentation liquid, and the filter cylinder 2 performs multi-stage filtration on the acidified fermentation liquid.

[0024] A receiving bottom 11 is provided inside the pretreatment cylinder 1, a discharge cone 12 is provided at the center of the receiving bottom 11, a sealing cone 13 is provided on the lower surface of the discharge cone 12, and discharge holes 121 are provided at equal distances on the discharge cone 12 and the sealing cone 13. When the discharge holes 121 on the discharge cone 12 and the sealing cone 13 are aligned, the filtrate above the receiving bottom 11 passes through the receiving bottom 11 and enters the filter cylinder 2. When the discharge holes 121 on the discharge cone 12 and the sealing cone 13 are misaligned, the receiving bottom 11 is blocked. At this time, the filtrate on the receiving bottom 11 is acidified to facilitate the regulation of the pH value of the filtrate. After adjusting to a suitable pH value, the next filtration operation is performed.

[0025] Specifically, the upper end surface of the sealing cone 13 is fixedly connected to a rotating shaft 131, which passes through the top of the pretreatment cylinder 1 and is connected to a first motor 14. The first motor 14 drives the rotating shaft 131 to rotate to control the sealing cone 13 to adjust its position. At the same time, a filtrate inlet and an acid solution inlet are provided on the top of the pretreatment cylinder 1, and a drain outlet 15 is connected to the side wall of the pretreatment cylinder 1 above the receiving bottom 11 for draining backwash water.

[0026] The filter cylinder 2 includes a fixed outer cylinder 21, a rotating inner cylinder 22, a conical coarse filter 23, a conical ultrafiltration membrane 24 and a motor cylinder 25. A liquid inlet is provided at the upper end of the fixed outer cylinder 21, and the liquid inlet is communicated with the pretreatment cylinder 1. The fixed outer cylinder 21 below the liquid inlet is movably connected with the rotating inner cylinder 22, and the lower end of the rotating inner cylinder 22 is movably connected with the motor cylinder 25. The motor cylinder 25 supports the lower end of the rotating inner cylinder 22, and a second motor 251 is arranged in the motor cylinder 25. The second motor 251 drives the rotating inner cylinder 22 to rotate. The upper end of the rotating inner cylinder 22 is engaged with the inner wall of the fixed outer cylinder 21. A chute 221 is provided on the side wall of the rotating inner cylinder 22. The chute 221 is engaged with the conical coarse filter 23. The filtrate discharged from the pretreatment cylinder 1 passes through the conical coarse filter 23 to filter out large particles of impurities in the fermentation liquid, and then enters the rotating inner cylinder 22. The second motor 251 drives the rotating inner cylinder 22 to rotate. The rotating inner cylinder 22 is centrifugally rotated. The rotating inner cylinder 22 is made of microporous ceramic filter material. The centrifugal motion quickly removes larger particles of suspended solids, and then the filtrate enters the fixed outer cylinder 21. The conical ultrafiltration membrane 24 is connected to the upper edge of the motor cylinder 25. The conical ultrafiltration membrane 24 divides the fixed outer cylinder 21 into an upper and lower layer. The filtrate passing through the conical ultrafiltration membrane 24 is further removed of fine particles and soluble impurities. The fixed outer cylinder 21 is placed below the conical ultrafiltration membrane 24 and is provided with a liquid extraction pump 211 and a backwashing inlet 212. The liquid extraction pump 211 can extract the filtrate passing through the conical ultrafiltration membrane 24 and accelerate the filtrate to pass through the conical ultrafiltration membrane 24. The backwashing inlet 212 passes the backwashing water into the fixed outer cylinder 21. Under high pressure, the conical ultrafiltration membrane 24, the rotating inner cylinder 22, the conical coarse filter 23 and the pretreatment cylinder 1 are gradually rinsed.

[0027] The conical coarse filter 23 provides a larger filtering area. When the filtrate in the pretreatment cylinder 1 contacts the conical coarse filter 23, filtration can be achieved quickly, and the filtered impurities can gather to the lower end of the conical coarse filter 23 under the impact of gravity and the filtrate, avoiding clogging of the conical coarse filter 23. The lower end edge of the conical coarse filter 23 is connected with a conical water collecting ring 231, and the conical water collecting ring 231 forms a top surface at the upper end of the rotating inner cylinder 22 to prevent the filtrate from overflowing upward during centrifugation. At the same time, the conical coarse filter 23 is fixedly connected to the liquid inlet by a fixing rod 232 to fix the position of the conical coarse filter 23. When the rotating inner cylinder 22 rotates, the conical coarse filter 23 remains in place.

[0028] Working process: the fermentation liquid enters the pretreatment cylinder 1 through the filtrate inlet, and at the same time, the acidic solution is added from the acidic solution inlet and mixed with the fermentation liquid to achieve acidification. The acidified fermentation liquid is temporarily retained on the receiving bottom 11. At this time, the discharge cone surface 12 and the discharge hole 121 on the sealing cone surface 13 are in a dislocated state, blocking the receiving bottom 11 to prevent the liquid from flowing out. The first motor 14 drives the sealing cone surface 13 to rotate through the rotating shaft 131 to adjust the position of the discharge hole 121. When the acidified fermentation liquid needs to be discharged, the discharge cone surface 12 and the discharge hole 121 on the sealing cone surface 13 are aligned, and the fermentation liquid flows into the filter cylinder 2 through the discharge hole 121. The acidified fermentation liquid enters the filter cylinder 2 through the liquid inlet and first contacts the conical coarse filter 2 3. The conical coarse filter 23 quickly removes large particles of impurities in the fermentation liquid. The filtered impurities are collected at the lower end of the conical coarse filter 23 under the action of gravity and the impact force of the filtrate. The filtered liquid enters the rotating inner cylinder 22. The second motor 251 drives the rotating inner cylinder 22 to rotate at a high speed, and uses centrifugal force to further remove larger particles of suspended matter. The liquid after centrifugal filtration enters the fixed outer cylinder 21 and is further filtered through the conical ultrafiltration membrane 24 to remove fine particles and soluble impurities. The liquid pump 211 extracts the clear liquid that passes through the conical ultrafiltration membrane 24 to complete the entire filtration process. After the filtration device has been running for a period of time, in order to prevent the filter component from being blocked, high-pressure backwashing water can be passed into the fixed outer cylinder 21 through the backwashing inlet 212.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A L-valine fermentation broth filtering device, comprising a pretreatment cartridge (1) and a filtering cartridge (2), characterized in that: The lower end of the pretreatment cylinder (1) is fixedly connected to the upper end of the filter cylinder (2); a receiving bottom (11) is provided inside the pretreatment cylinder (1); a discharge cone (12) is provided at the center of the receiving bottom (11); a sealing cone (13) is provided on the lower surface of the discharge cone (12); the filter cylinder (2) comprises a fixed outer cylinder (21), a motor cylinder (25), and a conical coarse filter (23), a rotating inner cylinder (22), and a conical ultrafiltration membrane (24) for filtering in sequence; discharge holes (121) are provided at equal distances on the discharge cone (12) and the sealing cone (13); and a rotating shaft (131) is fixedly connected to the upper end surface of the sealing cone (13).

2. The fermentation liquid filtering device of L-valine according to claim 1, characterized in that: The top of the pretreatment cylinder (1) is connected to a first motor (14), which is fixedly connected to the rotating shaft (131). The top of the pretreatment cylinder (1) is provided with a filtrate inlet and an acid solution inlet. A drain port (15) is connected to the side wall of the pretreatment cylinder (1) above the receiving bottom (11) for draining backwash water.

3. The fermentation liquid filtering device of L-valine according to claim 1, characterized in that: The upper end of the fixed outer cylinder (21) is provided with a liquid inlet, and a rotating inner cylinder (22) is movably connected to the fixed outer cylinder (21) below the liquid inlet, and the lower end of the rotating inner cylinder (22) is movably connected to the motor cylinder (25).

4. The fermentation liquid filtering device of L-valine according to claim 3, characterized in that: A second motor (251) is arranged in the motor cylinder (25); an output end of the second motor (251) is connected to the rotating inner cylinder (22); an upper end of the rotating inner cylinder (22) is engaged with an inner wall of the fixed outer cylinder (21); and the rotating inner cylinder (22) is made of a microporous ceramic filter material.

5. The L-valine fermentation liquid filtering device according to claim 1, characterized in that: A slide groove (221) is provided on the side wall of the rotating inner cylinder (22), and the slide groove (221) is engaged with the conical coarse filter screen (23).

6. The L-valine fermentation liquid filtering device according to claim 5, characterized in that: The lower edge of the conical coarse filter (23) is connected to a conical water collecting ring (231), and the conical coarse filter (23) is fixedly connected to the liquid inlet via a fixing rod (232) to fix the position of the conical coarse filter (23).

7. The L-valine fermentation liquid filtering device according to claim 1, characterized in that: The conical ultrafiltration membrane (24) is connected to the upper edge of the motor cylinder (25), and a liquid extraction pump (211) and a backwash inlet (212) are provided at a position of the fixed outer cylinder (21) below the conical ultrafiltration membrane (24).

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