Viscous protein filtering device

Abstract

The utility model discloses a viscous protein filtering device, which relates to the technical field of egg liquid filtering and comprises a shell, a feed port, a waste outlet, a discharge port, a primary filter element assembly, a rotary filtering assembly, a cooling liquid circulating device, a buffer cavity, a graded filter element assembly, an ultrasonic-assisted filtering device and the like. Through the synergistic effect of multi-stage filtering devices of the first-stage filter element assembly, the rotary filtering assembly and the grading filter element assembly, large impurities are rapidly treated in the rough filtering stage, overload of the fine filtering assembly is avoided, step-by-step fine filtering is achieved, the problem of low efficiency caused by direct treatment of viscous materials through a single-stage high-precision filter membrane is solved, and the working efficiency is improved. A rotating shaft in the rotary filtering assembly rotates at a high speed to generate centrifugal force, spiral guide blades synchronously rotate along with the rotating shaft to form spiral downward fluid motion, the centrifugal force pushes liquid to be rapidly filtered, the spiral blades synchronously stir to avoid local impurity accumulation, dynamic filtering and instant cleaning circulation are formed, and the filter element blocking period is delayed.

Description

Technical Field

[0001] This utility model relates to the field of egg liquid filtration technology, specifically a viscous protein filtration device. Background Technology

[0002] Purification and filtration technologies for viscous proteins such as egg liquid, collagen, and whey protein have wide applications in the food, biopharmaceutical, and chemical industries. However, existing technologies still have some technical problems. For example, it is difficult to balance efficiency and precision in single-stage filtration. Existing equipment often uses a single filter element or a simple multi-stage series filter element, resulting in low efficiency in the coarse filtration stage or easy clogging in the fine filtration stage. The filtration process is prone to clogging, and the continuous operation capability is poor. Traditional technologies rely on gravity or external pressure to drive filtration. Viscous proteins have poor fluidity, and impurities easily accumulate on the filter membrane surface. Especially when processing materials containing colloids and fibers, the filter element clogging cycle is short. During the filtration process, rotational friction, liquid flow, and ambient temperature can easily cause the internal temperature of the device to rise. Traditional equipment lacks effective temperature control design, and the temperature can reach above 25°C, causing heat-sensitive proteins such as enzymatic hydrolysates and immunoglobulins to denature and become inactive, affecting product quality. Utility Model Content

[0003] The purpose of this invention is to provide a viscous protein filtration device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a viscous protein filtration device, comprising: a housing, wherein the top of the housing is provided with an inlet, the lower left side is provided with a waste outlet, and the lower right side is provided with a discharge outlet; inside the housing, a primary filter element assembly is provided at the top, the inlet leads into the interior of the primary filter element assembly, a rotary filter element assembly is connected below the primary filter element assembly, the rotary filter element assembly is provided with a coolant circulation device inside, a buffer chamber is connected below it, a graded filter element assembly is connected below the buffer chamber, an ultrasonic-assisted filtration device is provided on the side wall of the graded filter element assembly, and its bottom is connected to the discharge outlet; a sewage discharge channel is provided on the left side of the housing, the primary filter element assembly and the rotary filter element assembly are connected to the sewage discharge channel through a sewage discharge assembly, and the bottom of the sewage discharge channel is connected to the waste outlet.

[0005] Furthermore, the primary filter element assembly includes: a metal filter screen fixed to the top wall of the housing by a metal filter screen bracket, the metal filter screen being inclined, and a conical guide shroud connected below the metal filter screen, the conical guide shroud extending into the interior of the rotating filter assembly.

[0006] Furthermore, the rotary filter assembly includes: a rotary filter assembly housing, a ceramic membrane tube coaxially disposed inside the rotary filter assembly housing, an annular channel formed by a gap between the rotary filter assembly housing and the ceramic membrane tube, the annular channel being connected to a buffer cavity, a rotary shaft coaxially disposed inside the ceramic membrane tube, a spiral guide vane disposed on the rotary shaft, the upper end of the rotary shaft being connected to the bottom of the conical guide shroud via a bearing, and the lower end being connected to a rotary motor.

[0007] Furthermore, the sewage discharge assembly includes: a large particle impurity guide plate connected to the left side of the metal filter screen, the large particle impurity guide plate being inserted into the sewage discharge channel, a small particle impurity discharge pipe being provided at the bottom of the annular channel, and a sewage discharge valve being provided on the small particle impurity discharge pipe.

[0008] Furthermore, the coolant circulation device includes: a coolant circulation layer provided outside the housing of the rotating filter assembly, the coolant circulation layer being connected to a coolant circulation tank at the end of a coolant circulation pipe, and the coolant circulation tank being fixed to the outer wall of the housing.

[0009] Preferably, the bottom of the buffer cavity is provided with a flow-damping plate, and the flow-damping plate has a plurality of holes evenly distributed on it.

[0010] Preferably, the graded filter element assembly includes a graded filter element housing, and the interior of the graded filter element housing is provided with a secondary filter membrane, a tertiary filter membrane and a honeycomb filter element group arranged sequentially from top to bottom. The pore size of the secondary filter membrane is distributed in a gradient, with a pore size of 10-5-1 micrometers from top to bottom. The pore size of the tertiary filter membrane is 0.2-1 micrometers. The pore size of the honeycomb filter element group is less than 0.1 micrometers.

[0011] Preferably, the ultrasonic-assisted filtration device includes: an ultrasonic generator provided on the outer wall of the housing, and an ultrasonic transducer provided on the outer wall of the graded filter element housing, wherein the ultrasonic generator and the ultrasonic transducer are electrically connected.

[0012] Preferably, the side wall of the graded filter element housing is provided with a heat-conducting pipe, the outer side of the housing is provided with a heat dissipation plate, and one end of the heat-conducting pipe is inserted into the heat dissipation plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a primary filter element to intercept large particulate impurities, a rotary filter element to separate medium-sized particles and colloidal substances, and a graded filter element to intercept medium-sized particles and nano-sized impurities. The multi-stage filtration device works synergistically, quickly processing large impurities in the coarse filtration stage, avoiding overloading of the fine filter element, and progressively refining the filtration process. This avoids the inefficiency caused by a single-stage high-precision filter membrane directly processing viscous materials. Furthermore, the high-speed rotation of the rotating shaft in the rotary filter element generates centrifugal force, forcing the protein solution to adhere tightly to the inner wall of the ceramic membrane tube. Under the action of pressure difference, liquid and small molecules quickly pass through the membrane pores into the annular channel, increasing the filtration speed and providing spiral flow guidance. The blades rotate synchronously with the rotating shaft, forming a spiral downward fluid motion, breaking the laminar flow state of the viscous liquid, avoiding static deposition of impurities on the membrane surface, centrifugal force drives the liquid to filter rapidly, and the spiral blades stir synchronously to avoid local impurity accumulation, forming a dynamic filtration and instant cleaning cycle, delaying the filter element clogging cycle. The ultrasonic transducer receives the high-frequency electrical signal from the generator and converts it into mechanical vibration, generating high-frequency pressure waves in the liquid, forming microbubbles that burst instantly, impacting impurities on the filter membrane surface and in the pores. Continuous vibration makes it difficult for particles to adhere stably to the filter membrane surface, keeping the membrane pores open. Finally, the coolant circulation device and heat pipes and heat sink achieve full-process temperature control, protecting the activity of heat-sensitive proteins. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the primary filter element assembly and the rotary filter assembly of this utility model;

[0016] Figure 3 This is a schematic diagram of the buffer cavity and graded filter element assembly of this utility model;

[0017] Figure 4 This is a schematic diagram of the metal filter structure of this utility model;

[0018] In the diagram: 1. Shell, 2. Inlet, 3. Waste outlet, 4. Outlet, 5. Primary filter element assembly, 6. Rotary filter assembly, 7. Coolant circulation device, 8. Buffer chamber, 9. Staged filter element assembly, 10. Ultrasonic assisted filtration device, 11. Drainage channel, 12. Drainage assembly, 13. Heat pipe, 14. Heat sink, 501. Metal filter screen, 502. Metal filter screen support, 503. Conical guide shroud, 601. Rotary filter assembly shell, 602. Ceramic membrane tube, 603. Annular Channel, 604, Rotating shaft, 605, Spiral guide vane, 606, Rotary motor, 701, Coolant circulation layer, 702, Coolant circulation pipe, 703, Coolant circulation tank, 801, Flow buffer plate, 901, Staged filter housing, 902, Secondary filter membrane, 903, Tertiary filter membrane, 904, Honeycomb filter assembly, 1001, Ultrasonic generator, 1002, Ultrasonic transducer, 1201, Large particle impurity guide plate, 1202, Small particle impurity drain pipe, 1203, Drain valve Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0020] Please refer to Figure 1-4 This utility model provides a viscous protein filtration device, comprising: a housing 1, a feed inlet 2 at the top of the housing 1, a waste outlet 3 at the lower left side, and a discharge outlet 4 at the lower right side; a primary filter element assembly 5 at the upper part of the housing 1, the feed inlet 2 leading into the primary filter element assembly 5; a rotary filter element 6 connected below the primary filter element assembly 5; a coolant circulation device 7 inside the rotary filter element 6; a buffer chamber 8 connected below the rotary filter element 6; a graded filter element assembly 9 connected below the buffer chamber 8; an ultrasonic-assisted filtration device 10 on the side wall of the graded filter element assembly 9; and a discharge channel 11 on the left side of the housing 1; the primary filter element assembly 5 and the rotary filter element 6 connected to the discharge channel 11 via a discharge component 12; and the bottom of the discharge channel 11 connected to the waste outlet 3.

[0021] Among them, the primary filter element 5 quickly intercepts large particulate impurities such as fibers and clumps, reducing the subsequent filtration load and improving the overall processing efficiency. The rotary filter element 6 separates medium-sized particles and colloidal substances through centrifugal force, balancing filtration speed and precision. The staged filter element 9 intercepts medium-sized particles and nano-sized impurities such as viruses and tiny colloids in stages, achieving high-purity protein liquid output.

[0022] The primary filter element assembly 5 includes: a metal filter screen 501 fixed to the top wall of the housing 1 by a metal filter screen bracket 502, the metal filter screen 501 being inclined, and a conical guide shroud 503 connected below the metal filter screen 501, the conical guide shroud 503 extending into the interior of the rotating filter assembly 6.

[0023] Among them, the inclined design of the metal filter 501 intercepts large particulate impurities such as fibers and clumps, and initially purifies the protein liquid. The conical guide hood 503 guides the filtered material downward into the rotating filter assembly, and guides the egg liquid to the high-speed rotating area to avoid material residue or direct flow into the bottom of the ceramic membrane tube due to gravity.

[0024] The rotary filter assembly 6 includes: a rotary filter assembly housing 601, a ceramic membrane tube 602 coaxially disposed inside the rotary filter assembly housing 601, an annular channel 603 formed by a gap between the rotary filter assembly housing 601 and the ceramic membrane tube 602, the annular channel 603 being connected to a buffer cavity 8, a rotary shaft 604 coaxially disposed inside the ceramic membrane tube 602, a spiral guide vane 605 disposed on the rotary shaft 604, the upper end of the rotary shaft 604 being connected to the bottom of a conical guide shroud 503 via a bearing, and the lower end being connected to a rotary motor 606.

[0025] Among them, the ceramic membrane tube 602 adopts a high-precision porous structure, which combines centrifugal force to separate small particles and colloidal substances. The rotary motor 606 drives the rotary shaft 604 and the spiral guide vane 605 to generate centrifugal force, which pushes the material to flow at high speed along the surface of the ceramic membrane tube, thereby enhancing the filtration efficiency. The annular channel 603 collects the filtrate that has passed through the ceramic membrane and transports it downward to the buffer chamber 8.

[0026] The sewage discharge assembly 12 includes: a large particle impurity guide plate 1201 connected to the left side of the metal filter screen 501; the large particle impurity guide plate 503 is inserted into the sewage discharge channel 11; a small particle impurity discharge pipe 1202 is provided at the bottom of the annular channel 603; and a sewage discharge valve 1203 is provided on the small particle impurity discharge pipe 1202.

[0027] Among them, the large particle impurity guide plate 1201 guides the impurities intercepted by the metal filter to the sewage discharge channel 11, and finally discharges them from the waste outlet 3. The small particle impurity sewage discharge pipe 1202 periodically opens the sewage discharge valve 1203 to discharge the impurities that the ceramic membrane has not passed through to the waste outlet 3. All impurities are uniformly collected in the sewage discharge channel and finally discharged from the waste outlet, avoiding the structural complexity caused by multi-path sewage discharge.

[0028] The coolant circulation device 7 includes: a coolant circulation layer 701 provided on the outside of the rotary filter assembly housing 601, the coolant circulation layer 701 being connected to a coolant circulation tank 703 at the end of a coolant circulation pipe 702, and the coolant circulation tank 703 being fixed on the outer wall of the housing 1.

[0029] The coolant circulation tank 703 stores and cools the circulating fluid to ensure continuous temperature control. The circulating coolant removes the heat generated by the rotating components, maintains protein activity, and prevents high-temperature denaturation.

[0030] The bottom of the buffer cavity 8 is provided with a flow-slowing plate 801. Several holes are evenly distributed on the flow-slowing plate 801 to reduce the flow rate of the egg white liquid, disperse the flow, and distribute it evenly to the graded filter element 9. This prevents the egg white liquid from directly entering the graded filter element 9, which would cause the egg white liquid to concentrate and impact a certain area, affecting the filtration effect and the life of the filter element.

[0031] The graded filter element assembly 9 includes a graded filter element housing 901. Inside the graded filter element housing 901, a secondary filter membrane 902, a tertiary filter membrane 903, and a honeycomb filter element group 904 are arranged sequentially from top to bottom. The pore size of the secondary filter membrane 902 is distributed in a gradient, with a pore size of 10-5-1 micrometers from top to bottom. The pore size of the tertiary filter membrane 903 is 0.2-1 micrometers. The pore size of the honeycomb filter element group 904 is less than 0.1 micrometers.

[0032] The ultrasonic-assisted filtration device 10 includes: an ultrasonic generator 1001 provided on the outer wall of the housing 1, and an ultrasonic transducer 1002 provided on the outer wall of the graded filter housing 901, wherein the ultrasonic generator 1001 and the ultrasonic transducer 1002 are electrically connected.

[0033] The side wall of the graded filter element housing 901 is provided with a heat conduction pipe 13, and the outer side of the housing 1 is provided with a heat dissipation plate 14. One end of the heat conduction pipe 13 is inserted into the heat dissipation plate 14 to conduct the heat generated by the graded filter element assembly to the external heat dissipation plate, so as to avoid heat accumulation affecting the filtration stability.

[0034] When using this invention, the viscous protein raw material first enters the device through the inlet 2 and is injected into the first-stage filter assembly 5. The inclined metal filter 501 intercepts large particles of impurities such as fibers and clumps of protein in the raw material, thus initially purifying the protein solution. The filtered protein solution flows downward along the inclined surface of the conical guide shroud 503 into the rotary filter assembly 6, guiding the protein solution to the high-speed rotating area and preventing material residue or direct flow into the bottom of the ceramic membrane tube due to gravity. Impurities intercepted by the metal filter 501 slide along the large particle impurity guide plate 1201 into the sewage discharge channel 11 and are finally discharged from the waste outlet 3. The protein solution then enters the ceramic membrane tube 602 of the rotary filter assembly 6 and is spirally guided. The blade 605 is driven by a rotary motor 606 to rotate at high speed, generating centrifugal force. The egg liquid is quickly thrown against the inner wall of the ceramic membrane tube 602. The ceramic membrane tube 602 has a porous structure that allows small molecule proteins and liquids to pass through and enter the annular channel 603, while unfiltered colloids, tiny particles, and other impurities are trapped inside the ceramic membrane tube 602. The drain valve 1203 is opened periodically to discharge the impurities trapped in the ceramic membrane tube 602 into the drain channel 11, and finally out of the waste outlet 3. The coolant flows in the coolant circulation layer 701, absorbing the heat generated by the rotational friction and the flow of the protein liquid, maintaining a low-temperature environment and preventing protein denaturation. The protein liquid that has passed through the ceramic membrane tube 602 enters the buffer chamber 8, which is then... The evenly distributed pores on the surface of the flow plate 801 reduce the flow rate of the egg white liquid, disperse it, and distribute it evenly to the graded filter element 9. This prevents the egg white liquid from directly entering the graded filter element 9, which would cause it to concentrate and impact a certain area, affecting the filtration effect and filter life. The egg white liquid enters the graded filter element 9 from the buffer chamber 8 and passes through three stages of filter membranes: the secondary filter membrane 902 has a pore size that gradually decreases from 10 micrometers to 1 micrometer, gradually intercepting medium-sized particulate impurities such as cell debris; the tertiary filter membrane 903 has a pore size of 0.2-1 micrometer, further removing submicron-sized particles such as some liposomes; and the honeycomb filter element 904 has a pore size of less than 0.1 micrometers, ultimately intercepting nano-sized impurities such as viruses and microcolloids. To ensure the high purity of the protein solution, the ultrasonic transducer 1002, driven by the ultrasonic generator 1001, emits high-frequency vibrations to the graded filter element, destroying the impurity layer attached to the filter membrane surface, preventing pore blockage, and extending the filter element life. The fully filtered high-purity protein solution is discharged from the outlet 4. The heat generated by the graded filter element assembly 9 is conducted to the heat dissipation plate 14 outside the shell through the heat conduction pipe 13, using air convection to dissipate heat and maintain a stable internal temperature of the device. Large particles of impurities are intercepted by the primary filter element, and medium and small particles of impurities are discharged through the rotating filter assembly. Both enter the sewage channel 11 through independent sewage discharge paths and are finally discharged from the waste outlet 3, realizing the classification and cleaning of impurities and reducing the frequency of downtime for cleaning.

[0035] Although embodiments of the present invention have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, it will be understood by those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention and without creative effort are within the scope of protection of the present invention.

Claims

1. A viscous protein filtration device, characterized in that, include: The housing (1) has a feed inlet (2) at the top, a waste outlet (3) at the lower left side, and a discharge outlet (4) at the lower right side. Inside the housing (1), a primary filter element assembly (5) is provided at the top. The feed inlet (2) leads into the interior of the primary filter element assembly (5). A rotary filter element assembly (6) is connected below the primary filter element assembly (5). A coolant circulation device (7) is provided inside the rotary filter element assembly (6). A buffer chamber (8) is connected below the buffer chamber (8). A graded filter element assembly (9) is connected below the buffer chamber (8). An ultrasonic auxiliary filter device (10) is provided on the side wall of the graded filter element assembly (9). The bottom is connected to the discharge outlet (4). A sewage discharge channel (11) is provided on the left side of the housing (1). The primary filter element assembly (5) and the rotary filter element assembly (6) are connected to the sewage discharge channel (11) through a sewage discharge assembly (12). The bottom of the sewage discharge channel (11) is connected to the waste outlet (3).

2. The viscous protein filtration device according to claim 1, characterized in that, The primary filter element assembly (5) includes: a metal filter screen (501) fixed to the top wall of the housing (1) by a metal filter screen bracket (502), the metal filter screen (501) being inclined, and a conical guide shroud (503) connected below the metal filter screen (501), the conical guide shroud (503) extending into the interior of the rotating filter assembly (6).

3. The viscous protein filtration device according to claim 2, characterized in that, The rotary filter assembly (6) includes: a rotary filter assembly housing (601), a ceramic membrane tube (602) coaxially arranged inside the rotary filter assembly housing (601), an annular channel (603) formed by a gap between the rotary filter assembly housing (601) and the ceramic membrane tube (602), the annular channel (603) being connected to a buffer cavity (8), a rotary shaft (604) coaxially arranged inside the ceramic membrane tube (602), a spiral guide vane (605) provided on the rotary shaft (604), the upper end of the rotary shaft (604) being connected to the bottom of a conical guide shroud (503) via a bearing, and the lower end being connected to a rotary motor (606).

4. The viscous protein filtration device according to claim 3, characterized in that, The sewage discharge assembly (12) includes: a large particle impurity guide plate (1201) connected to the left side of the metal filter screen (501), the large particle impurity guide plate (503) being inserted into the sewage discharge channel (11), a small particle impurity discharge pipe (1202) being provided at the bottom of the annular channel (603), and a sewage discharge valve (1203) being provided on the small particle impurity discharge pipe (1202).

5. The viscous protein filtration device according to claim 4, characterized in that, The coolant circulation device (7) includes: a coolant circulation layer (701) provided outside the housing (601) of the rotary filter assembly, the coolant circulation layer (701) being connected to a coolant circulation tank (703) at the end of a coolant circulation pipe (702), and the coolant circulation tank (703) being fixed on the outer wall of the housing (1).

6. The viscous protein filtration device according to claim 5, characterized in that, The bottom of the buffer cavity (8) is provided with a flow-slowing plate (801), and several holes are evenly distributed on the flow-slowing plate (801).

7. The viscous protein filtration device according to claim 6, characterized in that, The graded filter element assembly (9) includes a graded filter element housing (901). Inside the graded filter element housing (901), a secondary filter membrane (902), a tertiary filter membrane (903), and a honeycomb filter element group (904) are arranged sequentially from top to bottom. The pore size of the secondary filter membrane (902) is distributed in a gradient, with a pore size of 10-5-1 micrometers from top to bottom. The pore size of the tertiary filter membrane (903) is 0.2-1 micrometers. The pore size of the honeycomb filter element group (904) is less than 0.1 micrometers.

8. The viscous protein filtration device according to claim 7, characterized in that, The ultrasonic-assisted filtration device (10) includes: an ultrasonic generator (1001) on the outer wall of the housing (1), and an ultrasonic transducer (1002) on the outer wall of the graded filter housing (901), wherein the ultrasonic generator (1001) and the ultrasonic transducer (1002) are electrically connected.

9. The viscous protein filtration device according to claim 8, characterized in that, The side wall of the graded filter housing (901) is provided with a heat-conducting pipe (13), and a heat dissipation plate (14) is provided on the outside of the housing (1). One end of the heat-conducting pipe (13) is inserted into the heat dissipation plate (14).

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