Solid-liquid separation device

Abstract

The utility model discloses a solid-liquid separation device, and belongs to the technical field of biological fermentation production. The solid-liquid separation device is used for preparing protein powder from fermented mash and comprises a distillation tower, a solid-liquid separation device and a liquid-liquid separation device, and the distillation tower is used for distilling the fermented mash; a material inlet of the lifting pump is connected with a material outlet of the distillation tower; a feeding hole of the cyclone separation device is connected with a discharging hole of the lifting pump, the cyclone separation device comprises a clear liquid outlet and a concentrated liquid outlet, and the cyclone separation device is used for carrying out solid-liquid separation on solid-liquid mixed liquid entering the cyclone separation device by utilizing kinetic energy provided by the lifting pump and discharging separated clear liquid from the clear liquid outlet; the concentrated liquid is discharged from the concentrated liquid outlet; a feeding hole of the centrifugal machine is connected with a concentrated liquid outlet of the cyclone separation device; a feeding hole of the dryer is connected with a discharging hole of the centrifugal machine. And by arranging the cyclone separation device, the energy consumption for preparing protein powder through solid-liquid separation of the distilled mash is reduced, and the energy efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of biological fermentation production, and in particular relates to a solid-liquid separation device. Background Art

[0002] In the production process of fuel ethanol by biofermentation of industrial tail gas or biomass synthesis gas, it is necessary to separate the aged bacteria from solid and liquid as protein products. However, the concentration of the mash produced by ethanol-containing Fusobacterium after fermentation is about 1%. In order to obtain dry protein powder, a lot of energy is needed for solid-liquid separation and drying, which has the problem of high energy consumption. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a solid-liquid separation device to reduce the energy consumption of the distilled mash during the solid-liquid separation process and improve energy efficiency.

[0004] In a first aspect, the present application provides a solid-liquid separation device for preparing protein powder by fermenting mash, comprising:

[0005] A distillation tower, wherein the distillation tower is used to distill the fermented mash;

[0006] A lift pump, wherein the feed inlet of the lift pump is connected to the discharge outlet of the distillation tower;

[0007] A cyclone separation device, wherein the feed port of the cyclone separation device is connected to the discharge port of the lift pump, the cyclone separation device comprises a clear liquid outlet and a concentrated liquid outlet, and the cyclone separation device is used to utilize the kinetic energy provided by the lift pump to perform solid-liquid separation on the solid-liquid mixture entering the cyclone separation device, and to discharge the separated clear liquid from the clear liquid outlet, and the concentrated liquid from the concentrated liquid outlet;

[0008] A centrifuge, wherein the feed port of the centrifuge is connected to the concentrated liquid outlet of the cyclone separation device;

[0009] A dryer, wherein the feed port of the dryer is connected to the discharge port of the centrifuge.

[0010] According to the solid-liquid separation device of the present application, by setting a cyclone separation device, the kinetic energy of the lifting pump is used to perform preliminary solid-liquid separation on the liquid material without adding additional energy. The protein content in the concentrated liquid discharged from the cyclone separation device is greatly improved, so that the subsequent centrifuge and dryer can operate at a low load, reducing the probability of unstable and overloaded operation of the centrifuge and dryer, thereby reducing the energy consumption of the entire solid-liquid separation device, playing a role in saving energy and improving energy efficiency.

[0011] According to one embodiment of the present application, the cyclone separation device includes a cyclone, and the cyclone includes:

[0012] The device body has a cyclone chamber, the upper end of the cyclone chamber is provided with a clear liquid discharge port, the lower end of the cyclone chamber is provided with a concentrated liquid discharge port, the clear liquid discharge port is used to discharge the separated clear liquid to the clear liquid outlet of the cyclone separation device, and the concentrated liquid discharge port is used to discharge the separated concentrated liquid to the concentrated liquid outlet of the cyclone separation device;

[0013] A feed pipe, wherein the first end of the feed pipe is connected to the discharge port of the lift pump, the second end of the feed pipe is connected to the swirl chamber, and the tangent direction of the second end of the feed port is tangent to the inner wall of the swirl chamber.

[0014] According to one embodiment of the present application, the cyclone separation device comprises:

[0015] A flow divider, wherein a receiving cavity is formed in the flow divider, and the flow divider is provided with a feed port and a discharge port connected to the receiving cavity, the feed port of the flow divider is connected to the discharge port of the lifting pump, the cyclones are provided in plurality, the discharge ports are provided in plurality, and the first ends of the plurality of feed pipes are connected to the plurality of discharge ports in a one-to-one correspondence;

[0016] A collector, wherein the collector is provided with a first collecting tank and a second collecting tank, wherein the first collecting tank is formed with a clear liquid outlet of the cyclone separation device, and the clear liquid discharge port is used to discharge the clear liquid into the first collecting tank, and the second collecting tank is formed with a concentrated liquid outlet of the cyclone separation device, and the concentrated liquid discharge port is used to discharge the concentrated liquid into the second collecting tank.

[0017] According to one embodiment of the present application, the first collecting tank is arranged on the upper side of the second collecting tank, and the cyclone includes a discharge pipe, which is arranged in an arc shape, and the first end of the discharge pipe is connected to the clear liquid discharge port, and the second end of the discharge pipe is arranged toward the opening of the first collecting tank.

[0018] According to one embodiment of the present application, a filter screen is provided in the discharge pipe.

[0019] According to one embodiment of the present application, the accommodating chamber is spherically arranged, the feed port of the diverter is arranged at the lower end of the diverter, the multiple discharge ports of the diverter are distributed along the circumference of the diverter, and the multiple cyclones are arranged along the circumference of the diverter.

[0020] According to one embodiment of the present application, the device body includes a main body, an upper vertebral body and a lower vertebral body connected in sequence from top to bottom, the second end of the feed tube is connected to the main body, the diameters of the upper vertebral body and the lower vertebral body are arranged to decrease from top to bottom, and the main body, the upper vertebral body and the lower vertebral body jointly define the vortex chamber.

[0021] According to an embodiment of the present application, the cyclone further includes a sand settling nozzle, which is arranged at the lower end of the lower vertebral body, the inner diameter of the sand settling nozzle is smaller than the inner diameter of the lower vertebral body, and the sand settling nozzle defines the concentrate discharge port.

[0022] According to one embodiment of the present application, a plurality of lift pumps are provided, and the plurality of lift pumps are connected in parallel between the discharge port of the distillation tower and the feed port of the cyclone separation device.

[0023] According to one embodiment of the present application, a regulating valve, a flow meter and a pressure gauge are provided on the pipeline between the discharge port of the lift pump and the feed port of the cyclone separation device.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is one of the structural schematic diagrams of the solid-liquid separation device provided in the embodiment of the present application;

[0027] Figure 2 It is one of the structural schematic diagrams of the cyclone separation device provided in the embodiment of the present application;

[0028] Figure 3 This is one of the structural schematic diagrams of the cyclone provided in the embodiments of the present application.

[0029] Reference numerals:

[0030] 1. Solid-liquid separation device; 11. Distillation tower; 12. Lifting pump; 13. Cyclone separation device; 131. Cyclone; 132. Device body; 132a. Main body; 132b. Upper vertebral body; 132c. Lower vertebral body; 133. Sand settling spout; 134. Feed pipe; 135. Discharge pipe; 135a. Filter screen; 136. Diverter; 137. Collector; 137a. First collecting tank; 137b. Second collecting tank; 14. Centrifuge; 15. Dryer; 16. Regulating valve; 17. Flow meter; 18. Pressure gauge. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0032] Syngas biofermentation is an emerging fermentation technology. This fermentation technology is that a specific microbial cell (Fusobacterium ethanolica) uses carbon monoxide, hydrogen, etc. in industrial tail gas or biomass synthesis gas as a carbon source and energy source, converts carbon monoxide into ethanol through its own biological metabolism in a bioreactor, and the aged cells are separated into Fusobacterium ethanolica protein through solid-liquid separation. In the production process of fuel ethanol by industrial tail gas or biomass synthesis gas biofermentation, it is necessary to separate the aged cells from the solid and liquid as a protein product. However, the concentration of the mash produced by Fusobacterium ethanolica after fermentation is about 1%. In order to obtain dry protein powder, a large amount of energy is required for solid-liquid separation and drying, which has the problem of high energy consumption.

[0033] Based on the above considerations, the present application proposes a solid-liquid separation device, in which a cyclone separation device is arranged, and pipeline cyclone is used to perform solid-liquid separation. No additional energy is required from the outside, and the concentration of protein particles in the liquid material can be increased during this internal change process, thereby avoiding high-load operation of other separation and drying devices, reducing energy consumption, and playing a role in saving energy and improving energy efficiency.

[0034] Reference below Figure 1-Figure 3 A solid-liquid separation device according to an embodiment of the present application is described, which is used to produce protein powder by fermenting mash.

[0035] The solid-liquid separation device 1 includes a distillation tower 11 , a lift pump 12 , a cyclone separation device 13 , a centrifuge 14 and a dryer 15 .

[0036] In this embodiment, the feed port of the distillation tower 11 is connected to the feed end of the mash produced by biological fermentation, and is used to distill the fermented mash, wherein the top distillate of the distillation tower 11 is mainly an ethanol solution, and the bottom liquid of the distillation tower 11 does not contain ethanol, and the main component is a mixed liquid material of aged bacteria (protein particles) and water. Under normal circumstances, the concentration of bacterial protein in the liquid material is about 1%. It can be understood that the discharge port of the distillation tower 11 is located at the bottom position of the distillation tower 11. The specific form of the distillation tower 11 is not limited here. For example, the distillation tower 11 can be at least one of a plate distillation tower 11, a packed distillation tower 11, and a membrane distillation tower 11.

[0037] In one example, the solid-liquid separation device 1 may further include a secondary distillation system, and the top distillate of the distillation tower 11 is output to the secondary distillation system for further distillation.

[0038] The feed inlet of the lift pump 12 is connected to the discharge port of the distillation tower 11 .

[0039] In this embodiment, by connecting the feed port of the lift pump 12 to the discharge port of the distillation tower 11 , the lift pump 12 can provide conveying power for the liquid material flowing out of the distillation tower 11 .

[0040] The feed port of the cyclone separation device 13 is connected to the discharge port of the lifting pump 12. The cyclone separation device 13 includes a clear liquid outlet and a concentrated liquid outlet. The cyclone separation device 13 is used to use the kinetic energy provided by the lifting pump 12 to separate the solid-liquid mixture entering the cyclone separation device 13 into solid and liquid, and to discharge the separated clear liquid from the clear liquid outlet and the concentrated liquid from the concentrated liquid outlet.

[0041] In this embodiment, the lifting pump 12 pumps the solid-liquid mixture in the distillation tower 11 into the cyclone separation device 13 for preliminary solid-liquid separation. By using the output power of the lifting pump 12, the solid-liquid mixture has a certain initial kinetic energy after entering the cyclone separation device 13, so that the solid-liquid mixture performs a cyclone motion under the action of the kinetic energy to generate centrifugal force, thereby achieving solid-liquid separation. The protein particle content in the clear liquid after separation is extremely low, and the protein concentration in the concentrated liquid after separation is relatively high. After testing, it is determined that the protein concentration in the concentrated liquid can reach about 10%, which is nearly ten times higher than the concentration of 1% of the original solid-liquid mixture. Without using additional energy to drive, the protein concentration in the liquid material is greatly increased, thereby reducing the operating load of subsequent equipment. Among them, the clear liquid outlet of the cyclone separation device 13 is used to discharge and recycle the clear liquid, and the concentrated liquid outlet of the cyclone separation device 13 is used to transport the separated concentrated liquid to the subsequent centrifuge 14.

[0042] The feed inlet of the centrifuge 14 is connected to the concentrate outlet of the cyclone separation device 13 .

[0043] In this embodiment, the feed port of the centrifuge 14 is connected to the concentrate outlet of the cyclone separation device 13, and the concentrate after solid-liquid separation enters the centrifuge 14. Because it has been separated once in the early stage, the output power required by the centrifuge 14 is greatly reduced, reducing energy consumption. The centrifuge 14 uses a motor to provide centrifugal force to the centrifuge 14 drum, and uses the centrifugal force to achieve the purpose of solid-liquid separation. Among them, the type of centrifuge 14 is not limited here. For example, the centrifuge 14 can be at least one of a three-legged centrifuge 14, a horizontal screw pusher centrifuge 14, and a butterfly centrifuge 14.

[0044] The feed port of the dryer 15 is connected to the discharge port of the centrifuge 14 .

[0045] In this embodiment, the feed port of the dryer 15 is connected to the discharge port of the centrifuge 14, and the high-concentration liquid material that has been further separated from the solid and liquid by the centrifuge 14 enters the dryer 15 for drying. Since the concentration of the liquid material received by the dryer 15 is higher, the required drying heat is reduced, the energy consumption is reduced, and the water content of the protein powder at the discharge port of the dryer 15 is also lower, and the effect is better. Among them, the specific form of the dryer 15 is not limited here. For example, the dryer 15 can be at least one of a spray dryer 15, a fluidized bed dryer 15, an air flow dryer 15, and a box dryer 15.

[0046] According to the solid-liquid separation device 1 provided in the embodiment of the present application, by providing a cyclone separation device 13, the kinetic energy of the lifting pump 12 is utilized to perform preliminary solid-liquid separation on the liquid material without adding additional energy, and the protein content in the concentrated liquid discharged from the cyclone separation device 13 is greatly improved, so that the subsequent centrifuge 14 and dryer 15 can operate at a low load, reducing the probability of unstable and overloaded operation of the centrifuge 14 and the dryer 15, thereby reducing the energy consumption of the entire solid-liquid separation device 1, thereby saving energy and improving energy efficiency.

[0047] In some embodiments, a plurality of cyclone separation devices 13 may be provided, and the plurality of cyclone separation devices 13 are connected in series between the lift pump 12 and the centrifuge 14 to improve the separation effect.

[0048] According to some embodiments of the present application, Figure 2 and Figure 3 As shown, the cyclone separation device 13 may include a cyclone 131 , and the cyclone 131 may include a device body 132 and a feed pipe 134 .

[0049] The device body 132 has a cyclone chamber in it, the upper end of the cyclone chamber may be provided with a clear liquid discharge port, and the lower end of the cyclone chamber may be provided with a concentrated liquid discharge port. The clear liquid discharge port is used to discharge the separated clear liquid to the clear liquid outlet of the cyclone separation device 13, and the concentrated liquid discharge port is used to discharge the separated concentrated liquid to the concentrated liquid outlet of the cyclone separation device 13.

[0050] In this embodiment, the body 132 has a cyclone chamber, which can extend in the up-down direction, and the cross section of the cyclone chamber in the up-down direction is circular, so that after the liquid enters the cyclone chamber, it can rotate along the inner wall of the cyclone chamber to perform a cyclone motion. Under the action of centrifugal force, protein particles with larger mass move along the inner wall of the cyclone chamber toward the concentrated liquid outlet on the lower side, and clear liquid with smaller mass is discharged through the clear liquid outlet at the upper end of the cyclone chamber.

[0051] The first end of the feed pipe 134 can be connected to the discharge port of the lift pump 12, the second end of the feed pipe 134 can be connected to the swirl chamber, and the tangent direction of the second end of the feed port can be set tangent to the inner wall of the swirl chamber.

[0052] In this embodiment, the first end of the feed pipe 134 is connected to the discharge port of the lifting pump 12, and the second end of the feed pipe 134 is connected to the cyclone chamber to input the liquid pumped out by the lifting pump 12 into the cyclone chamber. By setting the tangent direction of the second end of the feed pipe 134 tangent to the inner wall of the cyclone chamber, the initial velocity of the liquid flowing in the cyclone chamber is increased, thereby improving the separation effect.

[0053] According to some embodiments of the present application, Figure 2As shown, the cyclone separation device 13 may include a flow divider 136 and a collector 137 .

[0054] A accommodating cavity may be formed in the diverter 136, and the diverter 136 may be provided with a feed port and a discharge port connected to the accommodating cavity. The feed port of the diverter 136 may be connected to the discharge port of the lifting pump 12. There may be multiple cyclones 131, and there may be multiple discharge ports. The first ends of the multiple feed pipes 134 may be connected to the multiple discharge ports in a one-to-one correspondence.

[0055] In this embodiment, the liquid pumped out by the lift pump 12 can enter the accommodating chamber through the feed port of the diverter 136, and be evenly distributed to the multiple feed pipes 134 through the multiple discharge ports opened on the accommodating chamber, so that the multiple cyclones 131 can work together to improve the efficiency of solid-liquid separation. It should be noted that the number of cyclones 131 is greater than or equal to 2, which is determined according to the flow design requirements and is not limited here. By way of example, 18 cyclones 131 can be provided.

[0056] The collector 137 may be provided with a first collecting tank 137a and a second collecting tank 137b. The first collecting tank 137a may be formed with a clear liquid outlet of the cyclone separation device 13, and the clear liquid discharge port is used to discharge the clear liquid into the first collecting tank 137a. The second collecting tank 137b may be formed with a concentrated liquid outlet of the cyclone separation device 13, and the concentrated liquid discharge port is used to discharge the concentrated liquid into the second collecting tank 137b.

[0057] In this embodiment, the collector 137 can be used to collect the clear liquid and the concentrated liquid discharged from the cyclone 131, wherein the first collecting tank 137a and the second collecting tank 137b are separately arranged to collect the clear liquid and the concentrated liquid respectively, and the clear liquid discharge ports of multiple cyclones 131 all correspond to the first collecting tank 137a to discharge the clear liquid into the first collecting tank 137a, and the concentrated liquid discharge ports of multiple cyclones 131 all correspond to the second collecting tank 137b to discharge the concentrated liquid into the second collecting tank 137b.

[0058] A clear liquid outlet is formed on the first collecting tank 137a, and the clear liquid outlet can be set on the bottom wall or side wall of the first collecting tank 137a to facilitate the discharge of the clear liquid, wherein the clear liquid outlet can be connected to a sewage treatment system to facilitate the recovery and treatment of the clear liquid.

[0059] A concentrated solution outlet is formed on the second collecting tank 137 b , and the concentrated solution outlet can be disposed on the bottom wall or the side wall of the first collecting tank 137 a to facilitate the discharge of the concentrated solution.

[0060] By providing the splitter 136 and the collector 137, it is convenient to provide a plurality of cyclones 131, thereby increasing the solid-liquid separation amount and thus improving the solid-liquid separation efficiency.

[0061] According to some embodiments of the present application, Figure 2 and Figure 3 As shown, the first collecting tank 137a can be arranged on the upper side of the second collecting tank 137b, and the cyclone 131 can include a discharge pipe 135, which can be arranged in an arc shape, and the first end of the discharge pipe 135 can be connected to the clear liquid discharge port, and the second end of the discharge pipe 135 can be arranged toward the opening of the first collecting tank 137a.

[0062] In this embodiment, because the clear liquid discharge port of the cyclone 131 is arranged at the upper end of the cyclone 131, and the concentrated liquid discharge port is arranged at the lower end of the cyclone 131, the first collecting tank 137a is arranged on the upper side of the second collecting tank 137b to facilitate the collection of the clear liquid and the concentrated liquid respectively.

[0063] Among them, the opening of the clear liquid discharge port faces upward, and the slot of the first collecting tank 137a is also set upward. By setting an arc-shaped discharge pipe 135, the first end of the discharge pipe 135 is connected to the clear liquid discharge port, and the second end of the discharge pipe 135 is set downward to guide the clear liquid discharged from the clear liquid discharge port to the opening of the first collecting tank 137a, so that the first collecting tank 137a can collect the clear liquid.

[0064] According to some embodiments of the present application, Figure 3 As shown, a filter screen 135 a may be provided in the discharge pipe 135 .

[0065] In this embodiment, by providing a filter 135a in the discharge pipe 135, a small amount of protein particles contained in the clear liquid can be filtered out, thereby reducing the protein particles discharged from the clear liquid discharge port and increasing the protein concentration of the concentrated liquid.

[0066] According to some embodiments of the present application, Figure 2 and Figure 3 As shown, the accommodating cavity can be set in a spherical shape, the feed port of the diverter 136 can be set at the lower end of the diverter 136, the multiple discharge ports of the diverter 136 can be distributed along the circumference of the diverter 136, and the multiple cyclones 131 can be arranged along the circumference of the diverter 136.

[0067] In this embodiment, in order to facilitate the uniform distribution of the liquid feed in each cyclone 131, the accommodating chamber can be spherical, and the feed port is arranged at the lower end of the diverter 136, entering the accommodating chamber from the lower side. The accommodating chamber can play a role in pressure equalization. The discharge port of the diverter 136 is arranged on the peripheral side of the diverter 136. The liquid first enters the accommodating chamber from the lower side of the accommodating chamber for pressure equalization, and then is diverted to each cyclone 131 from the discharge port on the peripheral side of the accommodating chamber, so that the feed of each cyclone 131 is relatively uniform.

[0068] It is understandable that, in the event of a single cyclone 131 failure, the corresponding cyclone 131 can be promptly replaced and repaired, which has little impact on the working efficiency of the entire cyclone separation device 13, thereby improving production efficiency and convenience of maintenance.

[0069] In some embodiments, the axis of the cyclone 131 may be tilted, and the axis of the cyclone 131 may be tilted from bottom to top in a direction away from the diverter 136, so that the clear liquid discharge port at the upper end of the cyclone 131 can discharge the clear liquid outward. In this embodiment, the horizontal dimension of the first collecting tank 137a is larger than the horizontal dimension of the second collecting tank 137b, so as to collect the clear liquid and the concentrated liquid and optimize the space occupied by the device.

[0070] According to some embodiments of the present application, Figure 3 As shown, the device body 132 may include a main body 132a, an upper vertebral body 132b and a lower vertebral body 132c connected in sequence from top to bottom, the second end of the feed tube 134 may be connected to the main body 132a, the diameters of the upper vertebral body 132b and the lower vertebral body 132c are set to decrease from top to bottom, and the main body 132a, the upper vertebral body 132b and the lower vertebral body 132c jointly define a vortex chamber.

[0071] In this embodiment, the main body 132a can be set in a cylindrical shape, and the second end of the feed pipe 134 is connected to the main body 132a. The liquid first makes a swirling motion around the side wall of the main body 132a through the feed pipe 134, and flows downward under the action of gravity to the upper vertebral body 132b and the lower vertebral body 132c. By setting the diameters of the upper vertebral body 132b and the lower vertebral body 132c to decrease from top to bottom to ensure the flow rate of the swirling flow, the clear liquid is lighter in weight and is discharged upward from the clear liquid discharge port, thereby improving the separation effect and facilitating the discharge of the concentrated liquid. It can be understood that the diameter of the lower vertebral body 132c is smaller than the diameter of the upper vertebral body 132b.

[0072] According to some embodiments of the present application, Figure 3 As shown, the cyclone 131 may further include a sand settling nozzle 133, which is disposed at the lower end of the lower cone 132c. The inner diameter of the sand settling nozzle 133 may be smaller than the inner diameter of the lower cone 132c, and the sand settling nozzle 133 defines a concentrated liquid discharge port.

[0073] In this embodiment, the sand settling nozzle 133 defines the concentrated liquid discharge port of the cyclone 131. After the liquid material is separated from the solid and liquid, the concentrated liquid sinks to the sand settling nozzle 133 for discharge. The inner diameter of the sand settling nozzle 133 is smaller than the inner diameter of the lower vertebral body 132c, so that when the concentrated liquid passes through the sand settling nozzle 133, the channel diameter suddenly becomes smaller, the pressure increases, and the flow rate becomes higher, which facilitates the rapid discharge of the concentrated liquid. The sand settling nozzle 133 can be made of hard ceramic material to improve the wear resistance of the sand settling nozzle 133 and improve the durability of the sand settling nozzle 133.

[0074] The inner diameter of the grit spout 133 may be 15-20 mm, so that the concentrated liquid with high concentration can obtain enough energy to be discharged smoothly from the cyclone 131. For example, the inner diameter of the grit spout 133 may be 18 mm.

[0075] According to some embodiments of the present application, Figure 1 As shown, a plurality of lift pumps 12 may be provided, and the plurality of lift pumps 12 may be connected in parallel between the discharge port of the distillation tower 11 and the feed port of the cyclone separation device 13 .

[0076] In this embodiment, by setting a plurality of lift pumps 12, a plurality of lift pumps 12 can be started at the same time to increase output power and work efficiency; or a method of having some lift pumps 12 working and some lift pumps 12 shut down for standby can be adopted, so that in case of a lift pump 12 failure, the standby lift pump 12 can be started in time, and production will not be affected by the lift pump 12 failure. The number of lift pumps 12 is not limited here, and can be two, three, four, or four or more, determined according to design requirements.

[0077] According to some embodiments of the present application, Figure 1 As shown, a regulating valve 16 , a flow meter 17 and a pressure gauge 18 may be provided on the pipeline between the discharge port of the lift pump 12 and the feed port of the cyclone separation device 13 .

[0078] In this embodiment, the solid-liquid separation device 1 may also be provided with a control device, which may be electrically connected to the regulating valve 16, the flow meter 17, the pressure gauge 18, the centrifuge 14, the drying tower and other components. By providing the regulating valve 16, the flow rate and flow velocity may be controlled by controlling the opening of the regulating valve 16, and the dehydration condition of the cyclone separation device 13 may be judged by the flow meter 17 and the pressure gauge 18. It is understandable that, under the condition of a determined flow rate and pressure, the dehydration condition of the cyclone separation device 13 may be obtained by calculation.

[0079] By observing and judging the dehydration condition of the cyclone separation device 13, the working power of the centrifuge 14 can be reduced through the control device, and the hot air volume of the drying tower can be reduced as appropriate, thereby achieving the effect of saving energy consumption and ensuring the smooth operation of the device.

[0080] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0081] In the description of the present application, 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0082] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0083] In the description of the present application, “plurality” means two or more.

[0084] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0085] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0087] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A solid-liquid separation device for preparing protein powder by fermenting mash, characterized in that: include: A distillation tower, wherein the distillation tower is used to distill the fermented mash; A lift pump, wherein the feed inlet of the lift pump is connected to the discharge outlet of the distillation tower; A cyclone separation device, wherein the feed port of the cyclone separation device is connected to the discharge port of the lift pump, the cyclone separation device comprises a clear liquid outlet and a concentrated liquid outlet, and the cyclone separation device is used to utilize the kinetic energy provided by the lift pump to perform solid-liquid separation on the solid-liquid mixture entering the cyclone separation device, and to discharge the separated clear liquid from the clear liquid outlet, and the concentrated liquid from the concentrated liquid outlet; A centrifuge, wherein the feed port of the centrifuge is connected to the concentrated liquid outlet of the cyclone separation device; A dryer, wherein the feed port of the dryer is connected to the discharge port of the centrifuge.

2. The solid-liquid separation device according to claim 1, characterized in that: The cyclone separation device comprises a cyclone, and the cyclone comprises: The device body has a cyclone chamber, the upper end of the cyclone chamber is provided with a clear liquid discharge port, the lower end of the cyclone chamber is provided with a concentrated liquid discharge port, the clear liquid discharge port is used to discharge the separated clear liquid to the clear liquid outlet of the cyclone separation device, and the concentrated liquid discharge port is used to discharge the separated concentrated liquid to the concentrated liquid outlet of the cyclone separation device; A feed pipe, wherein the first end of the feed pipe is connected to the discharge port of the lift pump, the second end of the feed pipe is connected to the swirl chamber, and the tangent direction of the second end of the feed port is tangent to the inner wall of the swirl chamber.

3. The solid-liquid separation device according to claim 2, characterized in that: The cyclone separation device comprises: A flow divider, wherein a receiving cavity is formed in the flow divider, and the flow divider is provided with a feed port and a discharge port connected to the receiving cavity, the feed port of the flow divider is connected to the discharge port of the lifting pump, the cyclones are provided in plurality, the discharge ports are provided in plurality, and the first ends of the plurality of feed pipes are connected to the plurality of discharge ports in a one-to-one correspondence; A collector, wherein the collector is provided with a first collecting tank and a second collecting tank, wherein the first collecting tank is formed with a clear liquid outlet of the cyclone separation device, and the clear liquid discharge port is used to discharge the clear liquid into the first collecting tank, and the second collecting tank is formed with a concentrated liquid outlet of the cyclone separation device, and the concentrated liquid discharge port is used to discharge the concentrated liquid into the second collecting tank.

4. The solid-liquid separation device according to claim 3, characterized in that: The first collecting tank is arranged on the upper side of the second collecting tank, and the cyclone includes a discharge pipe, which is arranged in an arc shape, and the first end of the discharge pipe is connected to the clear liquid discharge port, and the second end of the discharge pipe is arranged toward the opening of the first collecting tank.

5. The solid-liquid separation device according to claim 4, characterized in that: A filter screen is arranged in the discharge pipe.

6. The solid-liquid separation device according to claim 3, characterized in that: The accommodating cavity is spherical, the feed port of the diverter is arranged at the lower end of the diverter, the multiple discharge ports of the diverter are distributed along the circumference of the diverter, and the multiple cyclones are arranged along the circumference of the diverter.

7. The solid-liquid separation device according to claim 2, characterized in that: The device body includes a main body, an upper vertebral body and a lower vertebral body connected in sequence from top to bottom, the second end of the feed pipe is connected to the main body, the diameters of the upper vertebral body and the lower vertebral body are arranged to decrease from top to bottom, and the main body, the upper vertebral body and the lower vertebral body jointly define the vortex chamber.

8. The solid-liquid separation device according to claim 7, characterized in that: The cyclone further comprises a sand settling nozzle, which is arranged at the lower end of the lower vertebral body, the inner diameter of the sand settling nozzle is smaller than the inner diameter of the lower vertebral body, and the sand settling nozzle defines the concentrated liquid discharge port.

9. The solid-liquid separation device according to any one of claims 1 to 8, characterized in that: There are multiple lift pumps, and the multiple lift pumps are connected in parallel between the discharge port of the distillation tower and the feed port of the cyclone separation device.

10. The solid-liquid separation device according to any one of claims 1 to 8, characterized in that: A regulating valve, a flow meter and a pressure gauge are arranged on the pipeline between the discharge port of the lifting pump and the feed port of the cyclone separation device.

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