Selenium-rich mushroom powder extraction equipment and preparation method
Through the gradual temperature increase pre-drying process and preheating mechanism design, the problems of selenium loss and agglomeration in the mushroom powder spray dryer were solved, and the efficient drying and quality maintenance of mushroom powder were achieved.
Patent Information
- Application Number
- CN202411224980.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2044-09-03
AI Technical Summary
Existing mushroom powder spray dryers cause selenium content to be lost when drying at high temperatures, and are prone to causing mushroom powder mother liquor to agglomerate, affecting product quality.
A gradual heating pre-drying process and preheating mechanism are adopted, and the temperature is controlled in sections through the slow heating chamber and the heating chamber. Combined with the spiral guide plate and spray head design, low-temperature pre-drying and gradual heating of the mushroom powder mother liquor are achieved, reducing selenium loss and avoiding agglomeration.
Effectively maintain the original shape and structure of mushroom powder, reduce selenium loss, improve drying efficiency, and ensure good particle size distribution and product quality.
Smart Images
Figure CN119174928B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mushroom powder extraction equipment, in particular to a selenium-rich mushroom powder extraction equipment and a preparation method thereof. Background Art
[0002] In the current mushroom powder production and extraction process, a common drying device used is a spray dryer. It atomizes a mushroom powder solution into small particles, which are then rapidly dried by hot air to form dried mushroom powder. Spray dryers offer advantages such as fast drying speed, high efficiency, and ease of operation, making them widely used in mushroom powder production.
[0003] The structural deficiencies of the existing spray dryer for mushroom powder are:
[0004] Current mushroom powder spray dryers all use a relatively fast drying method to remove moisture from the mushroom powder mother liquor and form a dry powder. This drying method is achieved through high temperature. Although it can achieve rapid drying, the faster drying rate and high temperature will also cause a large amount of selenium content in the mushroom powder to be lost. Secondly, although pre-drying can solve this problem, it is necessary to maintain the original shape and structure of the mushroom powder as much as possible to avoid excessive shrinkage or deformation, which is very important for maintaining the quality of the final product.
[0005] In view of this, a selenium-rich mushroom powder extraction device that can perform pre-drying in stages and reduce the generation of agglomeration is needed to improve the shortcomings of the existing technology. Summary of the Invention
[0006] The purpose of the present invention is to provide a selenium-rich mushroom powder extraction device and a preparation method thereof, which adopts a gradually increasing temperature pre-drying process to achieve the selenium content of the mushroom powder and reduce the problem of mushroom powder mother liquor agglomeration during the pre-drying process.
[0007] To achieve the above objectives, one of the objectives of the present invention is to provide a selenium-rich mushroom powder extraction device, comprising a drying body, the drying body comprising a chassis, a drying chamber being provided at the bottom end of the chassis, a slow heating chamber and a heating chamber being provided at the top end of the chassis, the slow heating chamber being located above the heating chamber, the interior of the slow heating chamber being used to admit preheated gas, and the interior of the heating chamber being used to admit heated gas;
[0008] A preheating mechanism is provided at the top of the drying chamber inside the chassis. The preheating mechanism includes a guide chamber and a guide group. The guide group is located inside the guide chamber. The top of the guide chamber extends through the interior of the chassis to the upper surface of the chassis. The middle part of the guide chamber is mostly located in the slow heating chamber and less located in the heating chamber, so as to increase the preheating time in the slow heating chamber.
[0009] A spiral blade is provided inside the guide bin, the guide group includes a preheating part, a spiral guide plate is provided inside the preheating part, the preheating part is tightly fitted with the inner wall of the guide bin, the lower surface of the spiral guide plate is tightly fitted with the upper surface of the spiral blade, a notch is spirally opened on the surface of the preheating part, the notch is adapted to the preheating part, and the preheating part and the spiral guide plate rotate spirally up and down inside the guide bin.
[0010] As a further improvement of this technical solution, the bottom end of the spiral blade is provided with a conical discharge port for liquid discharge, and the bottom end of the spiral guide plate is connected to an inverted trapezoidal block, and the inclined surface of the inverted trapezoidal block is adapted to the top part of the conical discharge port.
[0011] As a further improvement of the present technical solution, the preheating mechanism also includes a drive group, which includes a mounting block, which is fixed on the upper surface of the guide bin, and a rotating round block is rotatably connected to the bottom end of the mounting block. A telescopic rod is provided at one end of the rotating round block, and the inner sliding rod of the telescopic rod is fixedly connected to the top of the spiral guide plate.
[0012] As a further improvement of the present technical solution, a hot air blower for inputting hot air is installed on the outer surface of the chassis, and the hot air blower includes a heating pipe, a preheating pipe and a temperature control valve. The heating pipe and the preheating pipe are used to circulate hot air, and the temperature control valve is used to control the preheating pipe to circulate hot air;
[0013] The preheating pipeline transports the preheated gas to the slow heating chamber;
[0014] The heating pipe transports the heated gas into the heating chamber.
[0015] As a further improvement of the present technical solution, a heat transfer port is provided between the temperature rising chamber and the drying chamber, and the temperature rising chamber transfers hot air to the drying chamber through the heat transfer port.
[0016] As a further improvement of the present technical solution, a liquid delivery pump is installed on the top of the chassis, a mother liquid inlet is opened on the top of the diversion bin, and a liquid delivery tube of the liquid delivery pump is fixedly connected to the inside of the mother liquid inlet.
[0017] As a further improvement of the technical solution, the bottom discharge port of the drying bin is connected to a cyclone separator through a pipeline, the top of the cyclone separator is connected to a fan through a pipeline, and the fan is installed on the upper surface of the chassis.
[0018] As a further improvement of the present technical solution, a spray head is provided at the liquid outlet at the bottom end of the diversion bin, and the spray head is located inside the drying bin.
[0019] A second object of the present invention is to provide a method for preparing selenium-rich mushroom powder, using any of the above-mentioned selenium-rich mushroom powder extraction equipment, comprising the following steps:
[0020] S1. Wash, cut or slice the mushrooms for extraction;
[0021] S2, subjecting the pretreated mushrooms to one of ultrasonic extraction, microwave-assisted extraction, and heating reflux extraction, and then dissolving the active ingredients in the mushrooms into a solvent;
[0022] S3. After extraction, the solution is passed through a filtration device to remove solid residues and obtain a filtrate containing the target component;
[0023] S4, passing the filtrate through a vacuum concentrator to reduce the solvent volume and concentrate the target component;
[0024] S5. Passing the concentrated solution through a selenium-rich mushroom powder extraction device to remove the remaining solvent and obtain dry mushroom powder.
[0025] Compared with the prior art, the present invention has the following beneficial effects:
[0026] 1. In the selenium-rich mushroom powder extraction equipment and preparation method, a preheating mechanism is set up to perform low-temperature pre-drying and then gradually increase the temperature to reduce selenium loss, while maintaining the original form and structure of the mushroom powder and avoiding excessive shrinkage or deformation. By using a hot draft fan and a slow heating chamber and a heating chamber to achieve segmented control of the temperature in the drying chamber, the temperature of the mushroom powder is ensured to be stable during the pre-drying and final drying processes.
[0027] 2. In the selenium-rich mushroom powder extraction equipment and preparation method thereof, a preheating mechanism is provided. Through the design of the guide bin and the spiral guide plate, the mushroom powder mother liquor is gradually heated during the transportation process to achieve pre-drying, and is atomized into the drying bin through the spray head, thereby increasing the contact area between the droplets and the hot air, shortening the drying time, and improving the drying efficiency. At the same time, when the guide group reciprocates up and down, a stirring effect can be exerted on the mushroom powder mother liquor at the bottom of the guide bin to reduce the agglomeration of the mushroom powder mother liquor. At the same time, when the spiral guide plate rises, it also has a slight stirring effect on the mushroom powder mother liquor circulating in the spiral guide plate, so that the mushroom powder mother liquor is always in a flowing non-static state, avoiding the occurrence of agglomeration, and ensuring that the dried mushroom powder has a good particle size distribution. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a schematic diagram of the overall structure of Example 1;
[0029] Figure 2 Schematic diagram of the internal structure of the drying body of Example 1;
[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the chassis top in Example 1;
[0031] Figure 4 This is a schematic diagram of the cross-sectional structure of the heat exhaust fan and the top of the chassis in Example 1;
[0032] Figure 5 This is a schematic structural diagram of the preheating mechanism of Example 1;
[0033] Figure 6 This is a structural diagram of the diversion chamber of Example 1;
[0034] Figure 7 This is a schematic diagram of the internal structure of the diversion chamber in Example 1;
[0035] Figure 8 This is a schematic structural diagram of the diversion group of Example 1;
[0036] Figure 9 This is a schematic diagram of the drive group structure of Example 1.
[0037] The meaning of each number in the figure is:
[0038] 10. Drying body; 11. Chassis; 12. Drying chamber; 13. Slow heating chamber; 14. Heating chamber; 141. Heat transfer port;
[0039] 20. Preheating mechanism;
[0040] 21. Diversion chamber; 211. Spiral blade; 212. Conical discharge port; 213. Mother liquor inlet;
[0041] 22. Guide group; 221. Preheating element; 222. Spiral guide plate; 223. Inverted trapezoidal block;
[0042] 23. Drive group; 231. Mounting block; 232. Telescopic rod; 233. Rotating round block; 234. Servo motor; 24. Spray head;
[0043] 30. Hot induced draft fan; 31. Heating pipe; 32. Preheating pipe; 33. Temperature control valve;
[0044] 40. Mother liquor barrel;
[0045] 50. Cyclone separator;
[0046] 60. Liquid delivery pump. DETAILED DESCRIPTION
[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0048] See also Figure 1 and Figure 2 As shown, one of the purposes of this embodiment is to provide a selenium-rich mushroom powder extraction device, including a drying body 10, the drying body 10 includes a chassis 11, and a drying bin 12 is provided at the bottom end of the chassis 11. The drying bin 12 is used to quickly dry the mushroom powder mother liquor entering the interior thereof to form a powder. The discharge port at the bottom of the drying bin 12 is connected to a cyclone separator 50 through a pipeline, and the top of the cyclone separator 50 is connected to a fan through a pipeline. The fan is installed on the upper surface of the chassis 11. When the fan is working, it sucks the inside of the drying bin 12, and draws the dried powder from the inside of the drying bin 12 into the cyclone separator 50, and is separated by the cyclone separator 50, and the powder is collected, and the hot air is discharged from the fan outlet.
[0049] In order to increase the selenium content of the mushroom powder after preparation, this embodiment uses low-temperature pre-drying and then gradually increases the temperature to reduce the loss of selenium. At the same time, during the pre-drying stage, the original shape and structure of the mushroom powder are maintained to avoid excessive shrinkage or deformation. Therefore, in this embodiment, please refer to Figure 3 As shown, a preheating mechanism 20 is installed inside the chassis 11, located at the top of the drying chamber 12. The bottom end of the preheating mechanism 20 extends through the chassis 11 into the drying chamber 12, and is used to atomize the preheated mushroom powder mother liquor into the drying chamber 12 for final drying. Furthermore, a hot air blower 30 is also mounted on the outer surface of the chassis 11 for inputting hot air. The hot air blower 30 also delivers the preheated air, stopping delivery when the preheating temperature reaches a set value.
[0050] Specifically: a slow heating chamber 13 and a heating chamber 14 are provided at the top of the chassis 11. The slow heating chamber 13 is located above the heating chamber 14. The interior of the slow heating chamber 13 is used to enter the preheating gas, and the interior of the heating chamber 14 is used to enter the heating gas. Figure 4 As shown, the hot induced draft fan 30 includes a heating pipe 31, a preheating pipe 32 and a temperature control valve 33. The heating pipe 31 and the preheating pipe 32 are used to circulate hot air. The temperature control valve 33 is used to control the preheating pipe 32 to circulate hot air. The preheating pipe 32 transports the preheated gas to the slow heating chamber 13. The top of the slow heating chamber 13 passes through the chassis 11 and is provided with an exhaust port (not shown in the figure) for discharging the gas inside the slow heating chamber 13. The heating pipe 31 transports the heated gas to the heating chamber 14 and transports the hot gas to the drying chamber 12 through the heat transfer port 141 provided between the heating chamber 14 and the drying chamber 12. The top of the preheating mechanism 20 is located in the slow heating chamber 13, and the bottom is located in the heating chamber 14. The purpose is that when the mother liquor passes through the preheating mechanism 20, it is first preheated at a low temperature from top to bottom and then heated.
[0051] A liquid delivery pump 60 is installed at the top of the chassis 11. The liquid delivery pump 60 is used to extract mushroom powder mother liquid from the mother liquid barrel 40 through a liquid delivery tube and deliver it to the preheating mechanism 20 for preheating.
[0052] Based on the above, the workflow is:
[0053] First, the hot air is transported from the preheating pipe 32 and the heating pipe 31 to the slow heating chamber 13 and the heating chamber 14 respectively through the hot induced draft fan 30. When the internal temperature of the slow heating chamber 13 reaches the set temperature, the temperature control valve 33 stops working and the heating pipe 31 diverts the gas to the preheating pipe 32. Then the liquid delivery pump 60 is started to transport the mushroom powder mother liquor from the mother liquor barrel 40 to the preheating mechanism 20. The preheating mechanism 20 pre-dries the mushroom powder mother liquor to remove part of the moisture and improve the stability of selenium. Finally, the pre-dried mother liquor enters the drying chamber 12 for final drying. The mushroom powder produced after drying is separated by the fan into the cyclone separator 50, and the hot air is discharged from the fan outlet.
[0054] Furthermore, in order to achieve a temperature increase process for the mushroom powder mother liquid after entering the preheating mechanism 20 and to prevent the mushroom powder mother liquid from agglomerating, the present embodiment further discloses a specific structure of the preheating mechanism 20, which is as follows:
[0055] See Figure 5 and Figure 6 As shown, in this embodiment, the preheating mechanism 20 includes a guide chamber 21, a guide group 22 and a drive group 23. The guide group 22 is located inside the guide chamber 21. The top of the guide chamber 21 passes through the interior of the chassis 11 and extends to the upper surface of the chassis 11. The drive group 23 is set on the upper surface of the guide chamber 21. Figure 4 It can be seen that the middle portion of the diversion chamber 21 is located more in the slow heating chamber 13 and less in the heating chamber 14. The purpose is to increase the preheating time in the slow heating chamber 13 to prevent the temperature from increasing too quickly. The bottom end of the diversion chamber 21 is tapered to allow the mother liquor to be discharged in a centralized manner.
[0056] A spray head 24 is provided at the liquid outlet at the bottom of the guide bin 21. The spray head 24 is located inside the drying bin 12 and is used to discharge the mother liquid into the drying bin 12 by atomization, thereby increasing the contact area between the droplets and the hot air, shortening the drying time, and quickly drying into powder.
[0057] Furthermore, the working principle between the guide chamber 21, the guide group 22 and the drive group 23 is disclosed below.
[0058] See Figure 7 As shown, the guide chamber 21 is provided with a spiral blade 211 inside, and a conical discharge port 212 is provided at the bottom of the spiral blade 211 for discharging liquid. The top of the guide chamber 21 is provided with a mother liquid inlet 213, and the mother liquid inlet 213 is fixedly connected to the infusion pipe of the liquid delivery pump 60 for entering the mother liquid. Figure 8As shown, the guide group 22 includes a preheating part 221, and a spiral guide plate 222 is provided inside the preheating part 221. The preheating part 221 is tightly fitted with the inner wall of the guide bin 21, and the lower surface of the spiral guide plate 222 is tightly fitted with the upper surface of the spiral leaf 211. The surface of the preheating part 221 is spirally opened with a slot, and the slot is adapted to the preheating part 221. The purpose of this design is that the preheating part 221 and the spiral guide plate 222 can be spirally rotated up and down inside the guide bin 21, which is used to slowly convey the mother liquor, increase the path for conveying the liquid, increase the preheating time, and allow the pre-drying of the mushroom powder mother liquor to be formed by gradually increasing the temperature, thereby further reducing the loss of selenium.
[0059] Also, see Figure 8 As shown, the bottom end of the spiral guide plate 222 is connected to an inverted trapezoidal block 223, and the inclined surface of the inverted trapezoidal block 223 is adapted to the top part of the conical discharge port 212. Its purpose is that when the spiral guide plate 222 drives the inverted trapezoidal block 223 to move downward, it can be embedded in the conical discharge port 212, and have an extrusion and conveying effect on the mushroom powder mother liquid. In this embodiment, the work of the guide group 22 is carried out in an up and down cycle. When the spiral guide plate 222 drives the inverted trapezoidal block 223 to rise, it can exert a stirring effect on the mushroom powder mother liquid at the bottom of the guide bin 21, thereby reducing the agglomeration of the mushroom powder mother liquid. At the same time, when the spiral guide plate 222 rises, it will also have a slight stirring effect on the mushroom powder mother liquid circulating in the spiral guide plate 222, so that the mushroom powder mother liquid is always in a flowing non-static state, thereby avoiding the occurrence of agglomeration.
[0060] In order to realize the up and down reciprocating motion of the guide group 22, in this embodiment, please refer to Figure 9 As shown, the driving group 23 includes a mounting block 231, which is fixed to the upper surface of the guide chamber 21. The bottom end of the mounting block 231 is rotatably connected to a rotating round block 233. One end of the rotating round block 233 is provided with a telescopic rod 232. The telescopic rod 232 adopts a telescopic structure of two slide rods. The inner slide rod slides inside the outer slide rod, and the outer slide rod is provided with a spring fixedly connected to the inner slide rod. It is not shown in the figure, which is a prior art. The inner slide rod of the telescopic rod 232 is fixedly connected to the top of the spiral guide plate 222, and the mounting block A rotating groove is provided inside 231, and the telescopic rod 232 slides in the rotating groove. When the telescopic rod 232 moves along the rotating groove, the spiral guide plate 222 is driven to rotate through the inner sliding rod, so that the guide group 22 as a whole can move back and forth up and down in the guide chamber 21; further, a servo motor 234 is installed on the top surface of the mounting block 231, and the drive shaft of the servo motor 234 passes through the mounting block 231 and is connected to the rotating circular block 233, which is used to drive the rotating circular block 233 to rotate back and forth, thereby realizing the movement of the telescopic rod 232.
[0061] In summary, the overall working principle of the selenium-rich mushroom powder extraction equipment in this embodiment is as follows:
[0062] First, the hot air is transported to the slow heating chamber 13 and the heating chamber 14 through the preheating pipe 32 and the heating pipe 31 respectively through the hot induced draft fan 30. When the temperature inside the slow heating chamber 13 reaches the set temperature, the temperature control valve 33 stops working and the heating pipe 31 diverts the gas to the preheating pipe 32. Then the liquid delivery pump 60 is started to deliver the mushroom powder mother liquid from the mother liquid barrel 40 to the diversion bin 21. The servo motor 234 is started to work, and the servo motor 234 drives the telescopic rod 232 to move, thereby driving The spiral guide plate 222 moves, and the spiral guide plate 222 drives the mushroom powder mother liquid to be transported downward. During the transportation process, the mushroom powder mother liquid gradually heats up to achieve pre-drying. When it is transported to the lowest end of the guide bin 21, part of the mushroom powder mother liquid is squeezed by the inverted trapezoidal block 223, and then atomized into the drying bin 12 by the spray head 24. The mushroom powder droplets enter the drying bin 12 for final drying. The mushroom powder produced after drying is separated by the fan into the cyclone separator 50, and the hot air is discharged from the fan outlet.
[0063] The second purpose of this embodiment is to provide a method for preparing selenium-rich mushroom powder, using the above-mentioned selenium-rich mushroom powder extraction equipment, including the following method steps:
[0064] S1. Wash, cut or slice the mushrooms for extraction;
[0065] S2, subjecting the pretreated mushrooms to one of ultrasonic extraction, microwave-assisted extraction, and heating reflux extraction, and then dissolving the active ingredients in the mushrooms into a solvent;
[0066] S3. After extraction, the solution is passed through a filtration device to remove solid residues and obtain a filtrate containing the target component;
[0067] S4, passing the filtrate through a vacuum concentrator to reduce the solvent volume and concentrate the target component;
[0068] S5. Passing the concentrated solution through a selenium-rich mushroom powder extraction device to remove the remaining solvent and obtain dry mushroom powder.
[0069] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A selenium-rich mushroom powder extraction device, comprising a drying body (10), wherein the drying body (10) comprises a chassis (11), wherein a drying chamber (12) is provided at the bottom of the chassis (11), and wherein: A slow-heating chamber (13) and a heating chamber (14) are provided at the top of the interior of the chassis (11), the slow-heating chamber (13) being located above the heating chamber (14), the interior of the slow-heating chamber (13) being used for entry of preheating gas, and the interior of the heating chamber (14) being used for entry of heating gas; A preheating mechanism (20) is provided at the top of the drying chamber (12) inside the chassis (11), and the preheating mechanism (20) includes a guide chamber (21) and a guide group (22). The guide group (22) is located inside the guide chamber (21). The top of the guide chamber (21) passes through the inside of the chassis (11) and extends to the upper surface of the chassis (11). The middle part of the guide chamber (21) is mostly located in the slow-heating chamber (13) and less located in the heating chamber (14), so as to increase the preheating time in the slow-heating chamber (13). The guide chamber (21) is provided with a spiral blade (211) inside, the guide group (22) includes a preheating element (221), a spiral guide plate (222) is provided inside the preheating element (221), the preheating element (221) is tightly fitted with the inner wall of the guide chamber (21), the lower surface of the spiral guide plate (222) is tightly fitted with the upper surface of the spiral blade (211), the surface of the preheating element (221) is spirally provided with a notch, the notch is adapted to the preheating element (221), and the preheating element (221) and the spiral guide plate (222) are spirally rotated up and down inside the guide chamber (21).
2. The selenium-rich mushroom powder extraction equipment according to claim 1, characterized in that: The bottom end of the spiral blade (211) is provided with a conical discharge port (212) for discharging liquid, and the bottom end of the spiral guide plate (222) is connected to an inverted trapezoidal block (223), the inclined surface of the inverted trapezoidal block (223) being adapted to the top portion of the conical discharge port (212).
3. The selenium-rich mushroom powder extraction equipment according to claim 1, characterized in that: The preheating mechanism (20) further includes a driving group (23), the driving group (23) including a mounting block (231), the mounting block (231) being fixed on the upper surface of the guide chamber (21), the bottom end of the mounting block (231) being rotatably connected to a rotating circular block (233), one end of the rotating circular block (233) being provided with a telescopic rod (232), the inner sliding rod of the telescopic rod (232) being fixedly connected to the top end of the spiral guide plate (222).
4. The selenium-rich mushroom powder extraction equipment according to claim 1, characterized in that: A hot air blower (30) for inputting hot air is installed on the outer surface of the chassis (11), and the hot air blower (30) includes a heating pipe (31), a preheating pipe (32) and a temperature control valve (33). The heating pipe (31) and the preheating pipe (32) are used to circulate hot air, and the temperature control valve (33) is used to control the preheating pipe (32) to circulate hot air; The preheating pipe (32) transports the preheated gas to the slow heating chamber (13); The heating pipe (31) transports the heated gas into the heating chamber (14).
5. The selenium-rich mushroom powder extraction equipment according to claim 4, characterized in that: A heat transfer port (141) is provided between the temperature-raising chamber (14) and the drying chamber (12), and the temperature-raising chamber (14) transfers hot air to the drying chamber (12) through the heat transfer port (141).
6. The selenium-rich mushroom powder extraction equipment according to claim 1, characterized in that: A liquid delivery pump (60) is installed at the top of the chassis (11), a mother liquid inlet (213) is opened at the top of the diversion bin (21), and a liquid delivery pipe of the liquid delivery pump (60) is fixedly connected inside the mother liquid inlet (213).
7. The selenium-rich mushroom powder extraction equipment according to claim 1, characterized in that: The bottom discharge port of the drying bin (12) is connected to a cyclone separator (50) through a pipeline, and the top of the cyclone separator (50) is connected to a fan through a pipeline, and the fan is installed on the upper surface of the chassis (11).
8. The selenium-rich mushroom powder extraction equipment according to claim 1, characterized in that: The liquid outlet at the bottom end of the diversion chamber (21) is provided with a spray head (24), and the spray head (24) is located inside the drying chamber (12).
9. A method for preparing selenium-enriched mushroom powder, characterized by: The selenium-rich mushroom powder extraction device according to any one of claims 1 to 8 comprises the following steps: S1. Wash, cut or slice the mushrooms for extraction; S2, subjecting the pretreated mushrooms to one of ultrasonic extraction, microwave-assisted extraction, and heating reflux extraction, and then dissolving the active ingredients in the mushrooms into a solvent; S3. After extraction, the solution is passed through a filtration device to remove solid residues and obtain a filtrate containing the target component; S4, passing the filtrate through a vacuum concentrator to reduce the solvent volume and concentrate the target component; S5. Passing the concentrated solution through a selenium-rich mushroom powder extraction device to remove the remaining solvent and obtain dry mushroom powder.