Gastrodia elata crushing and fine filtering device and method

Abstract

The present invention discloses a Gastrodia elata pulverizing and fine filtering device and method, the Gastrodia elata pulverizing and fine filtering device comprises a tank body and a pulverizing mechanism, the tank body is provided with a feed port and a discharge port, the tank body is divided into a fine filtering chamber and a collection chamber from top to bottom, the fine filtering chamber and the collection chamber are separated by a filter plate; the pulverizing mechanism comprises a cylinder body arranged in the fine filtering chamber, the top of the cylinder body is coaxially fixed with a first rotating shaft, the top of the first rotating shaft rotates through the top of the tank body and is connected to a first motor, a second rotating shaft is arranged in the cylinder body, and a plurality of groups of pulverizing blade groups are installed on the periphery of the second rotating shaft. The Gastrodia elata pulverizing and fine filtering device has a simple structure and a reasonable design. Based on the pulverizing and fine filtering method of the Gastrodia elata pulverizing and fine filtering device, the concentration of the effective component in the filtrate finally obtained can be controlled, thereby improving the filtering effect.

Description

Technical Field

[0001] The present invention relates to the field of biopharmaceutical technology, and more particularly to a device and method for crushing and fine filtering Gastrodia elata. Background Art

[0002] Tibetan medicine is a unique medical system formed through long-term practice on the basis of extensive absorption and integration of theories such as traditional Chinese medicine, Indian medicine and Dashi medicine. It has a history of thousands of years so far and is one of the more complete and influential ethnic medicines in my country. An important step in the process of Tibetan medicine preparation is crushing and filtering. Existing crushing and filtering equipment usually uses a large amount of water, resulting in a low concentration of the active ingredient of the medicine in the filtrate collected, affecting subsequent use. For example, a biopharmaceutical graded crushing and fine filtering device disclosed in the authorization announcement number CN110369095B, ​​which is a multi-stage crushing and fine filtering cartridge, is used to carry out layered and graded processing on the filtrate. However, due to the need to transport water into the cartridge during each stage of crushing and fine filtering, the problem of low concentration of the active ingredient of the collected filtrate is generated. Summary of the Invention

[0003] One object of the present invention is to provide a device and method for fine filtration of Gastrodia elata after crushing, which can fully dissolve Gastrodia elata after crushing and control the concentration of effective ingredients in the final filtrate.

[0004] In order to achieve these purposes and other advantages according to the present invention, according to one aspect of the present invention, there is provided a device for crushing and fine filtering Gastrodia elata, comprising:

[0005] The tank body is provided with a feed port and a discharge port. The tank body is divided into a fine filter chamber and a collection chamber from top to bottom. The fine filter chamber and the collection chamber are separated by a filter plate. The collection chamber is connected to an air pump through an air extraction pipe;

[0006] The crushing mechanism comprises a cylinder arranged in the fine filter chamber, the top of the cylinder is coaxially fixed with a first rotating shaft, the top of the first rotating shaft rotates through the top of the tank body and is connected to the first motor, a second rotating shaft is provided in the cylinder, and multiple groups of crushing blade groups are installed on the outer circumference of the second rotating shaft, the bottom of the second rotating shaft rotates through the bottom of the cylinder through a sealed bearing and is connected to the second motor, the second motor is fixedly mounted on the filter plate, the top of the cylinder is provided with an opening, the side wall of the cylinder is provided with multiple rows of filter holes arranged in the axial direction, each filter hole is covered with a filter membrane, and a strip-shaped baffle is provided outside each row of filter holes, each baffle is connected to a first spring at both ends of the side wall close to the cylinder, each first spring movably penetrates into the cylinder and is connected to a limit plate, and multiple second springs are also connected between each limit plate and the inner side wall of the cylinder.

[0007] Preferably, the collecting chamber is a funnel-shaped structure, the discharge port is arranged at the bottom of the collecting chamber, and a solenoid valve is installed at the discharge port.

[0008] Preferably, an electric closing door is installed at the opening.

[0009] Preferably, the feed port is located at the top of the tank body and is connected to the fine filter chamber. The feed port is arranged around the outer periphery of the first motor, and the feed port is divided into multiple fan-shaped structures by multiple connecting rods. The top of the feed port is covered with an annular cover.

[0010] Preferably, the multiple groups of crushing blade groups are divided into a first crushing blade group and a second crushing blade group, the first crushing blade group includes a plurality of blades symmetrically arranged on the side wall of the second rotating shaft and extending radially, and the second crushing blade group includes a plurality of blades symmetrically arranged on the top of the second rotating shaft and extending obliquely upward.

[0011] Preferably, the filtration membrane is an ultrafiltration membrane.

[0012] Preferably, the filter plate is a ceramic composite nanofiltration plate, and the preparation method thereof is:

[0013] Step a, stirring and mixing yttrium-stabilized zirconia ceramic powder with an average particle size of 200 nm, and preparing a ceramic base film by roller pressing;

[0014] Step b, dissolving polyamic acid, a precursor of polyimide, in N-methylpyrrolidone, mixing evenly, and standing to degas to obtain a casting solution with a solid content of 20%;

[0015] Step c: Apply the casting solution to the surface of the ceramic base membrane to a thickness of 150 μm. Soak the membrane in a water tank for 30 minutes, remove it and air dry it. Then, heat it to 500°C at a rate of 2°C / min, hold it for 2 hours, then continue heating it to 800°C at a rate of 3°C / min, hold it for 5 hours, then heat it to 1500°C at a rate of 5°C / min, hold it for 8 hours, and finally cool it to room temperature at a rate of 5°C / min to obtain the ceramic composite nanofiltration plate.

[0016] The present invention provides a pulverizing and fine filtering method of a gastrodia elata pulverizing and fine filtering device, comprising the following steps:

[0017] Step 1: Open the annular cover at the feed port of the tank body and the electric sealing door at the opening of the cylinder body, add a certain amount of Gastrodia elata and water into the cylinder body, and close the electric sealing door and the annular cover body;

[0018] Step 2: Turn on the second motor, so that the second rotating shaft drives the multiple groups of crushing blades to rotate, and crush the gastrodia elata. After 30 minutes, turn off the second motor, turn on the first motor, and make the first rotating shaft drive the cylinder to rotate at a speed of 500r / min for 3 minutes, and then turn off the first motor. During the rotation, multiple baffles are separated from the filter holes by the centrifugal force, so that all the filter holes are exposed, and the filtrate seeps out of the filter holes, is filtered through the filter plate, and is collected in the collection chamber;

[0019] Step 3: Turn on the second motor again and continue to grind for 30 minutes. Turn on the first motor and make the first shaft drive the cylinder to rotate at 1500r / min for 10 minutes. During the rotation, the filtrate seeps out from the filter hole, is filtered through the filter plate, and is collected in the collection chamber.

[0020] Step 4: Turn on the vacuum pump to evacuate the collection chamber to speed up the filtration of the filtrate, turn on the solenoid valve at the discharge port, collect the filtrate, and complete the crushing and fine filtration of the Gastrodia elata.

[0021] The present invention includes at least the following beneficial effects: the Gastrodia elata crushing and fine filtration device described in the present invention has a simple structure and a reasonable design. The liquid in the cylinder is centrifuged by controlling the rotation of the cylinder to improve the filtration effect. The filter hole is covered with a baffle, which can reduce the outflow of liquid when the Gastrodia elata is crushed and dissolved, ensuring that the Gastrodia elata powder is in full contact with water, reducing the amount of water used, and making the concentration of the final collected filtrate controllable; an ultrafiltration membrane is arranged at the filter hole, and the filter plate adopts a homemade ceramic composite nanofiltration plate. The two are combined to perform fine filtration on the Gastrodia elata solution to improve the filtration effect.

[0022] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a technical solution of the present invention;

[0024] Figure 2 This is a structural schematic diagram of the cylinder in one technical solution of the present invention;

[0025] Figure 3 It is a structural schematic diagram of any baffle in a technical solution of the present invention;

[0026] Figure 4 This is a structural schematic diagram of the feed port in one technical solution of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can implement the invention with reference to the description.

[0028] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0029] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0030] like Figures 1 to 4 As shown, the present invention provides a Gastrodia elata crushing and fine filtering device, comprising:

[0031] The tank body 100 is provided with a feed port 101 and a discharge port 102. The tank body 100 is divided into a fine filter chamber 103 and a collection chamber 104 from top to bottom. The fine filter chamber 103 and the collection chamber 104 are separated by a filter plate 105. The collection chamber 104 is connected to an air pump 106 through an air extraction pipe.

[0032] The crushing mechanism includes a cylinder 200 arranged in the fine filter chamber 103, the top of the cylinder 200 is coaxially fixed with a first rotating shaft 201, the top of the first rotating shaft 201 rotates through the top of the tank body 100 and is connected to a first motor 202, a second rotating shaft 203 is arranged in the cylinder 200, and a plurality of crushing blade groups are installed on the outer periphery of the second rotating shaft 203, the bottom of the second rotating shaft 203 rotates through the bottom of the cylinder 200 through a sealed bearing 210 and is connected to a second motor 204, and the second motor 204 is fixedly installed on the cylinder 200. On the filter plate 105, an opening 205 is provided at the top of the cylinder 200, and the side wall of the cylinder 200 is provided with multiple rows of filter holes 206 arranged along the axial direction, each filter hole 206 is covered with a filter membrane, and a strip-shaped baffle 207 is provided outside each row of filter holes 206. Each baffle 207 is connected to both ends of the side wall close to the cylinder 200 with a first spring 208, each first spring 208 is movably inserted into the cylinder 200 and connected to the limit plate 211, and multiple second springs 209 are also connected between each limit plate 211 and the inner wall of the cylinder 200.

[0033] In the present technical solution, the Gastrodia elata crushing and fine filtering device is provided with a tank body 100 and a crushing mechanism, the tank body 100 is divided into a cylindrical fine filtering chamber 103 and a funnel-shaped collecting chamber 104 from top to bottom, a filter plate 105 is provided between the fine filtering chamber 103 and the collecting chamber 104, a feed port 101 is provided at the top of the fine filtering chamber 103, and a discharge port 102 is provided at the bottom of the collecting chamber 104, the crushing mechanism is provided in the fine filtering chamber 103, the crushing mechanism is provided with a cylinder 200, the top of the cylinder 200 is coaxially fixed with a first rotating shaft 201, the first rotating shaft 201 is driven to rotate by a first motor 202, the bottom wall of the cylinder 200 is rotatably penetrated by a second rotating shaft 203, the second rotating shaft 203 is driven by a first motor 202. The second motor 204 drives it to rotate, and the end of the second rotating shaft 203 located in the cylinder 200 is equipped with multiple groups of crushing blade groups. The curved side wall of the cylinder 200 is provided with multiple rows of filter holes 206, and each filter hole 206 is provided with a filter membrane. Each row of filter holes is arranged along the axial direction of the cylinder 200, and a vertical baffle 207 is provided on the outside of each row of filter holes 206. The two ends of one side of the baffle 207 are fixedly connected to the first spring 208, and the first spring 208 moves through the upper and lower sides of each row of filter holes on the side wall of the cylinder 200. The other end of the spring is connected to the limit plate 211, which is embedded in the cylinder 200, and multiple second springs 209 are also connected between the limit plate 211 and the side wall of the cylinder 200. When the first spring 208 and the second spring 209 are in a normal state, multiple baffles 207 cover and block the multiple rows of filter holes, hindering the seepage of liquid in the cylinder 200; when the Gastrodia elata material in the cylinder 200 is crushed and fully dissolved, the first motor 202 is turned on to drive the cylinder 200 to rotate, and the multiple baffles 207 are moved outward by the centrifugal force and no longer block the filter holes 206. At this time, the seepage rate of the liquid can be adjusted by controlling the rotation speed of the cylinder 200. After the liquid seeps out, it is filtered and separated by the filter plate 105 to realize the fine filtration process of Gastrodia elata. If the filtration speed of the filter plate 105 is slow, the vacuum pump 106 can also be turned on to evacuate the collection chamber 104 to make the collection chamber 104 negative pressure to speed up the filtration speed, and finally the filtrate is collected by the discharge port 102. In this technical solution, the Gastrodia elata material is crushed by a crushing blade group, and then double filtered through the filter membrane at the filter hole 206 and the filter plate 105 to achieve the purpose of crushing and fine filtration; a baffle 207 is set outside the filter hole 206 to prevent the liquid from leaking out prematurely during the crushing stage. When the cylinder 200 rotates, the liquid in the cylinder 200 can be discharged immediately, ensuring the full dissolution of the Gastrodia elata powder while making the concentration of the effective ingredients in the final filtrate controllable, which is convenient for subsequent further processing.

[0034] In another technical solution, the collecting chamber 104 is a funnel-shaped structure, the discharge port 102 is provided at the bottom of the collecting chamber 104, and a solenoid valve is installed at the discharge port 102. In this technical solution, the funnel-shaped collecting chamber 104 is provided to facilitate the collection of the filtrate.

[0035] In another technical solution, an electric closing door is installed at the opening 205. In this technical solution, the electric closing door is provided to prevent the material from leaking from the opening 205 when the cylinder 200 rotates.

[0036] In another technical solution, the feed port 101 is located at the top of the tank body 100 and communicates with the fine filter chamber 103. The feed port 101 is arranged around the outer periphery of the first motor 202 and is divided into multiple sector-shaped structures by multiple connecting rods 110. The top of the feed port 101 is covered with an annular cover. In this technical solution, the feed port 101 is formed by multiple coaxial sector-shaped structures, so that the opening 205 of the barrel body 200 can be opposite the feed port 101 regardless of its rotation, allowing normal feeding.

[0037] In another technical solution, the multiple crushing blade groups are divided into a first crushing blade group 212 and a second crushing blade group 213. The first crushing blade group 212 includes multiple blades symmetrically arranged on the sidewalls of the second rotating shaft 203 and extending radially, and the second crushing blade group 213 includes multiple blades symmetrically arranged on the top of the second rotating shaft 203 and extending obliquely upward. In this technical solution, multiple crushing blade groups are provided to improve the crushing effect.

[0038] In another technical solution, the filter membrane is an ultrafiltration membrane. In this technical solution, the ultrafiltration membrane is used to perform primary filtration on the filtrate to improve the filtration effect.

[0039] In another technical solution, the filter plate is a ceramic composite nanofiltration plate, and its preparation method is as follows:

[0040] Step a, stirring and mixing yttrium-stabilized zirconia ceramic powder with an average particle size of 200 nm, and preparing a ceramic base film by roller pressing;

[0041] Step b, dissolving polyamic acid, a precursor of polyimide, in N-methylpyrrolidone, mixing evenly, and standing to degas to obtain a casting solution with a solid content of 20%;

[0042] Step c, apply the casting liquid to the surface of the ceramic base membrane with a coating thickness of 150 μm, soak it in a water tank for 30 minutes, take it out and dry it, then increase the temperature to 500°C at a heating rate of 2°C / min, keep it warm for 2 hours, continue to increase the temperature to 800°C at a heating rate of 3°C / min, keep it for 5 hours, then increase the temperature to 1500°C at a heating rate of 5°C / min, keep it for 8 hours, and finally gradually cool it to room temperature at a cooling rate of 5°C / min to obtain the ceramic composite nanofiltration plate.

[0043] In this technical solution, a homemade ceramic composite nanofiltration plate is used, with a ceramic membrane as the base membrane and a polyimide membrane coated on its surface. The prepared filter plate can purify and filter the effective ingredients of Gastrodia elata very well, with good selectivity and separation effect.

[0044] The present invention provides a pulverizing and fine filtering method of a Gastrodia elata pulverizing and fine filtering device, which is characterized by comprising the following steps:

[0045] Step 1: Open the annular cover at the feed port of the tank body and the electric sealing door at the opening of the cylinder body, add a certain amount of Gastrodia elata and water into the cylinder body, and close the electric sealing door and the annular cover body;

[0046] Step 2: Turn on the second motor, so that the second rotating shaft drives the multiple groups of crushing blades to rotate, and crush the gastrodia elata. After 30 minutes, turn off the second motor, turn on the first motor, and make the first rotating shaft drive the cylinder to rotate at a speed of 500r / min for 3 minutes, and then turn off the first motor. During the rotation, multiple baffles are separated from the filter holes by the centrifugal force, so that all the filter holes are exposed, and the filtrate seeps out of the filter holes, is filtered through the filter plate, and is collected in the collection chamber;

[0047] Step 3: Turn on the second motor again and continue to grind for 30 minutes. Turn on the first motor and make the first shaft drive the cylinder to rotate at 1500r / min for 10 minutes. During the rotation, the filtrate seeps out from the filter hole, is filtered through the filter plate, and is collected in the collection chamber.

[0048] Step 4: Turn on the vacuum pump to evacuate the collection chamber to speed up the filtration of the filtrate, turn on the solenoid valve at the discharge port, collect the filtrate, and complete the crushing and fine filtration of the Gastrodia elata.

[0049] Example 1

[0050] The Gastrodia elata pulverizing and fine filtering device of the present invention is used to pulverize and fine filter the Gastrodia elata, wherein the filter plate used is a commercially available ceramic nanofiltration plate. The pulverizing and fine filtering process of the Gastrodia elata is specifically as follows:

[0051] Step 1: Open the annular cover at the feed port of the tank body and the electric sealing door at the opening of the cylinder body, add a certain amount of Gastrodia elata and water into the cylinder body, and close the electric sealing door and the annular cover body;

[0052] Step 2: Turn on the second motor, so that the second rotating shaft drives the multiple groups of crushing blades to rotate, and crush the gastrodia elata. After 30 minutes, turn off the second motor, turn on the first motor, and make the first rotating shaft drive the cylinder to rotate at a speed of 500r / min for 3 minutes, and then turn off the first motor. During the rotation, multiple baffles are separated from the filter holes by the centrifugal force, so that all the filter holes are exposed, and the filtrate seeps out of the filter holes, is filtered through the filter plate, and is collected in the collection chamber;

[0053] Step 3: Turn on the second motor again and continue to grind for 30 minutes. Turn on the first motor and make the first shaft drive the cylinder to rotate at 1500r / min for 10 minutes. During the rotation, the filtrate seeps out from the filter hole, is filtered through the filter plate, and is collected in the collection chamber.

[0054] Step 4: Turn on the vacuum pump to evacuate the collection chamber to speed up the filtration of the filtrate, turn on the solenoid valve at the discharge port, collect the filtrate, and complete the crushing and fine filtration of the Gastrodia elata.

[0055] Example 2

[0056] The difference from Example 1 is that the filter plate used in the Gastrodia elata crushing and fine filtration device is a homemade ceramic composite nanofiltration plate, and its preparation method is as follows:

[0057] Step a, stirring and mixing yttrium-stabilized zirconia ceramic powder with an average particle size of 200 nm, and preparing a ceramic base film by roller pressing;

[0058] Step b, dissolving polyamic acid, a precursor of polyimide, in N-methylpyrrolidone, mixing evenly, and standing to degas to obtain a casting solution with a solid content of 20%;

[0059] Step c, apply the casting liquid to the surface of the ceramic base membrane with a coating thickness of 150 μm, soak it in a water tank for 30 minutes, take it out and dry it, then increase the temperature to 500°C at a heating rate of 2°C / min, keep it warm for 2 hours, continue to increase the temperature to 800°C at a heating rate of 3°C / min, keep it for 5 hours, then increase the temperature to 1500°C at a heating rate of 5°C / min, keep it for 8 hours, and finally gradually cool it to room temperature at a cooling rate of 5°C / min to obtain the ceramic composite nanofiltration plate.

[0060] Comparative Example 1

[0061] The difference from Example 2 is the crushing and fine filtering process of Gastrodia elata, which is specifically as follows:

[0062] Step 1: Open the annular cover at the feed port of the tank body and the electric sealing door at the opening of the cylinder body, add a certain amount of Gastrodia elata and water into the cylinder body, and close the electric sealing door and the annular cover body;

[0063] Step 2: Turn on the second motor, so that the second rotating shaft drives the multiple groups of crushing blades to rotate, and crush the gastrodia elata. After 60 minutes, turn off the second motor, turn on the first motor, and make the first rotating shaft drive the cylinder to rotate at a speed of 1500r / min for 15 minutes. During the rotation, multiple baffles are separated from the filter holes by the centrifugal force, so that all the filter holes are exposed. The filtrate seeps out of the filter holes, is filtered by the filter plate, and is collected in the collection chamber.

[0064] Step 3: Turn on the vacuum pump to evacuate the collection chamber to speed up the filtration of the filtrate, turn on the solenoid valve at the discharge port, collect the filtrate, and complete the crushing and fine filtration of the Gastrodia elata.

[0065] Comparative Example 2

[0066] The difference from Example 1 is that the filter plate used in the Gastrodia elata crushing and fine filtration device is a commercially available ceramic ultrafiltration plate.

[0067] In Examples 1 and 2 and Comparative Examples 1 and 2, equal amounts of Gastrodia elata materials were crushed and filtered, and the concentration and purity of the active ingredients in the filtrates collected were recorded and tested. The results are shown in Table 1 below:

[0068] Table 1

[0069] Example 1 Example 2 Comparative Example 1 Comparative Example 2 Concentration (mol / L) 281.1 325.6 188.8 159.3 purity(%) 78.5 81.3 75.8 55.1

[0070] The results show that the concentration and purity of the active ingredient in the filtrate finally collected in Example 2 are the highest and the effect is the best, because it adopts the homemade ceramic composite nanofiltration plate of the present invention, and covers a layer of polyimide membrane on the surface of the ceramic base membrane, which has better selectivity for the active ingredients of Gastrodia elata, and higher purity, and combines the fine filtration method in the present invention to perform secondary separation and filtration, so that the Gastrodia elata is dissolved more completely after being crushed, and the collected filtrate concentration is higher. Compared with Example 2, the commercially available ceramic nanofiltration plate adopted in Example 1 is made of only ceramic powder and cannot achieve the same selectivity as the homemade ceramic composite nanofiltration plate of the present invention, so the purity of its filtrate is lower and the concentration is also lower. The method of disposable separation and filtration is adopted in Comparative Example 1, which makes the crushing effect and dissolution effect of the material worse than Example 2, and then through disposable separation, it makes it difficult for some active substances to fully dissolve and be trapped on the inner surface of the filter membrane, which ultimately leads to low concentration of the filtrate and poor purity. Commercially available ceramic ultrafiltration plates are adopted in Comparative Example 2, although the cost is relatively low, but the selectivity for the active ingredients of Gastrodia elata is poor, resulting in high impurity content in the filtrate, low purity and low concentration.

[0071] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Gastrodia elata crushing and fine filtering device, characterized in that: include: The tank body is provided with a feed port and a discharge port. The tank body is divided into a fine filter chamber and a collection chamber from top to bottom. The fine filter chamber and the collection chamber are separated by a filter plate. The collection chamber is connected to an air pump through an air extraction pipe; The pulverizing mechanism comprises a cylinder arranged in the fine filter chamber, the top of the cylinder is coaxially fixed with a first rotating shaft, the top of the first rotating shaft rotates through the top of the tank body and is connected to the first motor, a second rotating shaft is provided in the cylinder, a plurality of crushing blade groups are installed on the outer circumference of the second rotating shaft, the bottom of the second rotating shaft rotates through the bottom of the cylinder body through a sealed bearing and is connected to the second motor, the second motor is fixedly mounted on the filter plate, the top of the cylinder is provided with an opening, the side wall of the cylinder is provided with a plurality of rows of filter holes arranged in the axial direction, each filter hole is covered with a filter membrane, a strip-shaped baffle is provided outside each row of filter holes, each baffle is connected to a first spring at both ends of the side wall close to the cylinder, each first spring movably penetrates into the cylinder and is connected to a limit plate, and a plurality of second springs are also connected between each limit plate and the inner side wall of the cylinder; Wherein, the filter plate is a ceramic composite nanofiltration plate, and its preparation method is as follows: Step a, stirring and mixing yttrium-stabilized zirconia ceramic powder with an average particle size of 200 nm, and preparing a ceramic base film by roller pressing; Step b, dissolving polyamic acid, a precursor of polyimide, in N-methylpyrrolidone, mixing evenly, and standing for degassing to obtain a casting solution with a solid content of 20%; Step c, apply the casting liquid to the surface of the ceramic base membrane with a coating thickness of 150 μm, soak it in a water tank for 30 min, take it out and dry it, then increase the temperature to 500°C at a heating rate of 2°C / min, keep it warm for 2 h, continue to increase the temperature to 800°C at a heating rate of 3°C / min, keep it for 5 h, then increase the temperature to 1500°C at a heating rate of 5°C / min, keep it for 8 h, and finally gradually cool it to room temperature at a cooling rate of 5°C / min to obtain the ceramic composite nanofiltration plate.

2. The Gastrodia elata crushing and fine filtering device according to claim 1, wherein: The collecting chamber is a funnel-shaped structure, the discharge port is arranged at the bottom of the collecting chamber, and a solenoid valve is installed at the discharge port.

3. The Gastrodia elata crushing and fine filtering device according to claim 1, characterized in that: An electric closing door is installed at the opening.

4. The Gastrodia elata crushing and fine filtering device according to claim 1, wherein: The feed port is located at the top of the tank body and is connected to the fine filter chamber. The feed port is arranged around the outer periphery of the first motor, and the feed port is divided into multiple fan-shaped structures by multiple connecting rods. The top of the feed port is covered with an annular cover.

5. The Gastrodia elata crushing and fine filtering device according to claim 1, characterized in that: The multiple groups of crushing blade groups are divided into a first crushing blade group and a second crushing blade group. The first crushing blade group includes a plurality of blades symmetrically arranged on the side wall of the second rotating shaft and extending radially. The second crushing blade group includes a plurality of blades symmetrically arranged on the top of the second rotating shaft and extending obliquely upward.

6. The Gastrodia elata crushing and fine filtering device according to claim 1, characterized in that: The filter membrane is an ultrafiltration membrane.

7. A pulverizing and fine filtration method based on the Gastrodia elata pulverizing and fine filtration device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Open the annular cover at the feed port of the tank body and the electric sealing door at the opening of the cylinder body, add a certain amount of Gastrodia elata and water into the cylinder body, and close the electric sealing door and the annular cover body; Step 2: Turn on the second motor, so that the second rotating shaft drives the multiple groups of crushing blades to rotate, and crush the gastrodia elata. After 30 minutes, turn off the second motor, turn on the first motor, and make the first rotating shaft drive the cylinder to rotate at a speed of 500 r / min for 3 minutes, and then turn off the first motor. During the rotation, the multiple baffles are separated from the filter holes by the centrifugal force, so that all the filter holes are exposed, and the filtrate seeps out of the filter holes, is filtered by the filter plate, and is collected in the collection chamber; Step 3: Turn on the second motor again and continue to grind for 30 minutes. Turn on the first motor and make the first shaft drive the cylinder to rotate at 1500 r / min for 10 minutes. During the rotation, the filtrate seeps out from the filter hole, is filtered through the filter plate, and is collected in the collection chamber; Step 4: Turn on the vacuum pump to evacuate the collection chamber to speed up the filtration of the filtrate, turn on the solenoid valve at the discharge port, collect the filtrate, and complete the crushing and fine filtration of the Gastrodia elata.

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