A high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds

Abstract

This utility model discloses a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds, including a frame. A motor is mounted at the top of the frame, and the bottom of the motor extends into the frame and is keyed to a drive shaft. Below the drive shaft is a vertical double-cylinder separation assembly, which includes an inner cylinder. The top of the inner cylinder is connected to the drive shaft via a spline. The device employs a purely mechanical system, with its core components including a top drive module, the vertical double-cylinder separation assembly, and a stratified collection tank. The vertical double-cylinder separation assembly comprises a fixed outer cylinder and a rotating inner cylinder, both conical and vertically installed. Spiral blades in the inner cylinder agitate the solid-liquid mixture. The liquid seeps into the collection tank through the outer cylinder's filter screen; the solid settles at the bottom and is compressed by the blades towards the narrow tip. When the thrust reaches a threshold, it pushes open the collection tank's push rod and enters the collection tank. The conical structure of the inner and outer cylinders creates a gradient compression space, which, combined with the blade pushing action, results in a significant separation effect. In response to the tendency of Astragalus complanatus sap to agglomerate, the shearing action between the blades and the cylinder wall can break up the agglomerates and prevent clogging; the dynamic matching of the gap between the filter screen and the blades not only accelerates the seepage, but also enhances the self-cleaning ability through blade scraping, reducing the frequency of downtime for cleaning.

Description

Technical Field

[0001] This utility model relates to the field of production, specifically to a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds. Background Technology

[0002] As a traditional Chinese medicine, the extraction of its active ingredients from Astragalus complanatus requires a solid-liquid separation process, which directly affects the purity and yield of the product. Currently, in the field of Chinese medicine preparation, the solid-liquid separation of Astragalus complanatus relies mainly on general equipment such as centrifugal filtration and plate and frame filtration. However, because the mucilage contained in Astragalus complanatus easily causes filter clogging and incomplete separation, there is an urgent need for targeted and efficient separation devices.

[0003] Traditional equipment currently on the market has many drawbacks: 1. Insufficient separation efficiency and thoroughness. Horizontal equipment has a fixed compression space, which cannot form a gradient pressure, resulting in a high solid moisture content. Centrifugal equipment suffers from insufficient liquid clarity due to viscous substances adhering to the cylinder wall, requiring secondary filtration. 2. Cumbersome operation and maintenance with high energy consumption. Multi-motor drives require complex electrical control, leading to a high failure rate in humid environments. Filter cleaning requires shutdown and disassembly, affecting continuous production. 3. Poor material compatibility. No special structure was designed for the agglomeration characteristics of Astragalus complanatus seeds, making them prone to clogging at the inlet and separation chamber, requiring frequent manual unblocking. Furthermore, the discharge structure lacks a leak-proof design, allowing liquid to easily mix into the solid collection area, leading to cross-contamination and reducing the yield of effective components. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds. The design involves the solid-liquid mixture entering the conical gap between the inner and outer cylinders through the inlet. A motor drives the spiral blades on the inner cylinder and outer wall to rotate at high speed. As the material moves towards the bottom, a gradient compression space is formed due to the narrowing gap. Under the pushing force of the spiral blades, the compressive force gradually increases. Free liquid and squeezed-out bound water pass through the outer cylinder filter screen into the outer collection tank and are discharged through the outlet. The compressed solid forms a compacted solid body at the bottom. As the pushing continues, the force exerted by the solid on the push rod accumulates to the elastic reset threshold, at which point the push rod is pushed open, and the solid falls from the conical discharge hopper into the collection tank.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds, comprising a frame, a motor at the top of the frame, a drive shaft connected to the bottom of the motor via a key, and a vertical double-cylinder separation assembly below the drive shaft.

[0006] The vertical double-cylinder separation assembly includes an inner cylinder, the top of which is connected to the drive shaft via a spline. Continuous spiral blades are welded to the outer wall of the inner cylinder. An outer cylinder is provided inside the frame. Both the inner and outer cylinders are conical and coaxially arranged. A filter screen is provided on the body of the outer cylinder.

[0007] A liquid collection tank is fitted on the outer side of the outer cylinder, and a liquid outlet is connected to the lowest point of the bottom of the liquid collection tank. A conical discharge hopper is provided at the bottom of the inner cylinder, and a top block is provided at the outlet of the conical discharge hopper. A top rod that can be elastically reset is fixedly connected below the top block, and a solid collection tank is connected below the top rod.

[0008] Furthermore, the conical discharge hopper is provided with threads on its outer periphery, and the top of the solid collection trough is provided with a threaded hole adapted to the threads. The solid collection trough is detachably connected to the conical discharge hopper through thread engagement.

[0009] Furthermore, a feed inlet is provided on the left side of the motor, and the feed inlet extends to the top of the outer cylinder through an inclined feed pipe.

[0010] Furthermore, a manual valve is provided on the liquid outlet.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0012] 1. Targeted improvement in separation performance. The synergistic effect of "mechanical agitation-gradient extrusion" specifically solves the separation problem caused by the mucilage of Astragalus complanatus: the shear force formed by the spiral blades and the conical outer cylinder wall can effectively break up the aggregates and prevent the liquid from being trapped by the solid; the gradient extrusion space fully squeezes out the bound water through gradually increasing extrusion pressure, which significantly reduces the water content of the solid. At the same time, the liquid has higher clarity after being filtered by the filter screen, reducing the burden of subsequent purification processing.

[0013] 2. Enhanced operational efficiency and stability. The "dynamic discharge" mechanism achieves full-process automation: the elastic reset design of the top rod can automatically control the discharge timing according to the solid pushing force, without manual intervention, ensuring continuous and uninterrupted separation process; the purely mechanical structure reduces the risk of electrical component failure, and the scraping effect of the spiral blades on the cylinder wall reduces the probability of material retention and blockage, significantly reducing downtime maintenance time and improving the applicability of the device in the large-scale preparation of Astragalus complanatus. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds according to the present invention;

[0015] Figure 2 This is a schematic diagram of the vertical double-cylinder separation component of this utility model;

[0016] Figure 3 This is a schematic diagram of the appearance of a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds according to this utility model.

[0017] In the diagram: 1. Frame; 2. Motor; 3. Drive shaft; 4. Vertical double-cylinder separation assembly; 401. Inner cylinder; 402. Spiral blade; 403. Outer cylinder; 404. Filter screen; 5. Liquid collection tank; 6. Liquid outlet; 7. Conical discharge hopper; 8. Top block; 9. Top rod; 10. Solid collection tank; 11. Thread; 12. Feed inlet; 13. Feed pipe; 14. Manual valve; 15. Elastic sealing ring; 16. Handle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This embodiment provides a high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds, comprising a frame 1, a motor 2 at the top of the frame 1, a drive shaft 3 connected to the bottom of the motor 2 inside the frame 1 by a key, and a vertical double-cylinder separation assembly 4 below the drive shaft 3.

[0020] The vertical double-cylinder separation assembly 4 includes an inner cylinder 401, the top of which is connected to the drive shaft 3 via a spline. Continuous spiral blades 402 are welded to the outer wall of the inner cylinder 401. An outer cylinder 403 is provided inside the frame 1. Both the inner cylinder 401 and the outer cylinder 403 are conical and coaxially arranged. A filter screen 404 is provided on the body of the outer cylinder 403.

[0021] A liquid collection tank 5 is fitted on the outer side of the outer cylinder 403. A liquid outlet 6 is connected to the lowest point of the bottom of the liquid collection tank 5. A conical discharge hopper 7 is provided at the bottom of the inner cylinder 401. A top block 8 is provided at the outlet of the conical discharge hopper 7. A top rod 9 that can be elastically reset is fixedly connected below the top block 8. A solid collection tank 10 is connected below the top rod 9.

[0022] The outer surface of the conical discharge hopper 7 is machined with a continuous thread 11. The top opening of the solid collection tank 10 is provided with an internal threaded hole that matches the thread 11. The conical discharge hopper 7 and the solid collection tank 10 form a stable and detachable connection through the meshing of the thread 11. This threaded connection structure design has two advantages: firstly, the tight meshing between the threads ensures the sealing of the joint between the conical discharge hopper 7 and the solid collection tank 10, preventing liquid leakage during material discharge; secondly, when the material in the solid collection tank 10 reaches a certain amount, it can be quickly removed from the conical discharge hopper 7 by rotation for cleaning or replacement, greatly shortening the disassembly and assembly time, reducing downtime, and improving overall work efficiency.

[0023] A feed inlet 12 is located on the left side of motor 2. The lower end of feed inlet 12 is connected to an inclined feed pipe 13. The other end of feed pipe 13 passes through the top side wall of outer cylinder 403 and extends into the internal space of outer cylinder 403. The inclined design of feed pipe 13 can make full use of the gravity of the material to assist in its conveying, making the solid-liquid mixture of Astragalus complanatus flow more smoothly. This effectively avoids the problem of accumulation and blockage in feed inlet 12 and feed pipe 13 due to poor material flowability, thereby ensuring that the material can continuously and stably enter the separation area between inner cylinder 401 and outer cylinder 403, ensuring the orderly progress of the separation work.

[0024] A manual valve 14 is installed at the outlet 6, which can precisely control the opening and closing degree of the outlet 6. By adding the manual valve 14 at the outlet 6, the operator can flexibly adjust the liquid discharge rate according to the actual liquid level in the liquid collection tank 5 and the rhythm of the separation process. When the liquid in the liquid collection tank 5 is about to reach its upper limit, the valve opening can be reduced to slow down the discharge rate and prevent liquid overflow. When the device needs to be shut down for maintenance, the manual valve 14 can be quickly closed to prevent residual liquid in the liquid collection tank 5 from flowing out, reducing material waste and preventing liquid pollution to the surrounding environment.

[0025] At the outlet edge of the conical discharge hopper 7, on the end face that contacts the top block 8, an elastic sealing ring 15 is embedded. This ring is made of wear-resistant and aging-resistant rubber. The elastic sealing ring 15 has good deformation capability and can tightly fill the contact gap between the outlet edge of the conical discharge hopper 7 and the top block 8. When the top block 8 is reset under the action of elastic force, the sealing ring 15 is tightly squeezed, forming a reliable sealing barrier. This effectively prevents the liquid that has not been completely separated from seeping into the solid collection tank 10 from the gap between the two, further improving the purity of solid-liquid separation and ensuring the quality of solid materials.

[0026] A handle 16 is welded to the middle section of the outer wall of the frame 1. The outer surface of the handle 16 has evenly distributed anti-slip textures. The addition of the handle 16 to the frame 1 greatly enhances the portability of the entire device. When it is necessary to move the device between different operating tables in the laboratory or between different workstations in the workshop, the operator can easily do so by holding the handle 16. Especially when carrying out small-batch, multi-batch preparation of Astragalus complanatus seeds, this design can significantly improve the flexibility of the equipment and meet the needs of use in different scenarios.

[0027] In summary, this device allows the solid-liquid mixture to enter the conical gap between the outer and inner cylinders through the feed inlet and the inclined feed pipe. After the motor starts, it transmits power through the axially downward inner cylinder, causing the inner cylinder to rotate at high speed. At this time, the spiral blades on the outer wall of the inner cylinder rotate together. During the continuous stirring of the material, the rotational characteristics of the blades are used to steadily push the material towards the narrow area at the bottom. As the material moves downwards, the gap between the inner and outer cylinders gradually narrows, forming a gradient compression space that decreases in width. Under the continuous thrust of the spiral blades, the material experiences increasing extrusion pressure. The free liquid and the squeezed-out bound water pass through the filter screen on the outer cylinder and seep into the liquid collection tank on the outside. The liquid then flows along the inclined bottom of the collection tank and is finally discharged through the outlet and the manual valve installed on it. The compressed solid material, under the continuous pushing force, exerts a thrust on the top block and the elastically resettable top rod at the outlet of the conical discharge hopper. When the thrust reaches the threshold, it pushes open the top block and the top rod, entering the solid collection tank below. After discharge, the top rod resets under its own elastic force and achieves a tight seal through the elastic sealing ring installed at the contact position, thus completing one solid-liquid separation cycle. This process is repeated to achieve periodic solid-liquid separation.

[0028] The device's unique conical double-cylinder structure, combined with spiral blades, creates a gradient extrusion effect while agitating the material, significantly improving the efficiency of solid-liquid separation. It effectively separates the liquid components from Astragalus complanatus seeds. The threaded solid collection tank design ensures a tight seal when connected to the conical discharge hopper, while the elastic sealing ring further prevents leakage. These features ensure the purity of the separation and effectively address the difficulty in separating Astragalus complanatus seeds due to their viscous content. Furthermore, the inclined feed pipe utilizes gravity to assist material transport, effectively preventing the accumulation and blockage of solid-liquid mixtures during feeding. The manual valve at the liquid outlet allows for easy control of the liquid discharge rate. The threaded connection makes disassembly and cleaning of the solid collection tank more convenient. Combined with the handle in the middle of the frame's outer wall, the device's portability is significantly enhanced. The overall structure cleverly balances efficient separation with ease of operation, meeting the needs of most application scenarios.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency solid-liquid separation device for preparing sand melon, comprising a rack (1), characterized in that: The top of the frame (1) is equipped with a motor (2), the bottom of the motor (2) extends into the frame (1) and is keyed to a drive shaft (3), and a vertical double-cylinder separation assembly (4) is provided below the drive shaft (3): The vertical double-cylinder separation assembly (4) includes an inner cylinder (401), the top of which is connected to the drive shaft (3) via a spline. Continuous spiral blades (402) are welded to the outer wall of the inner cylinder (401). An outer cylinder (403) is provided inside the frame (1). Both the inner cylinder (401) and the outer cylinder (403) are conical and coaxially arranged. A filter screen (404) is provided on the body of the outer cylinder (403). A liquid collection tank (5) is sleeved on the outside of the outer cylinder (403). A liquid outlet (6) is connected to the lowest point of the bottom of the liquid collection tank (5). A conical discharge hopper (7) is provided at the bottom of the inner cylinder (401). A top block (8) is provided at the outlet of the conical discharge hopper (7). A top rod (9) that can be elastically reset is fixedly connected below the top block (8). The bottom of the top rod (9) is connected to the solid collection tank (10). 2.The high-efficiency solid-liquid separation device for preparing sand-melon seeds according to claim 1, characterized in that: The conical discharge hopper (7) is provided with a thread (11) on its periphery, and the top of the solid collection trough (10) is provided with a threaded hole adapted to the thread (11). The solid collection trough (10) is detachably connected to the conical discharge hopper (7) through thread engagement.

3. The high-efficiency solid-liquid separation device for preparing sand lotus seed according to claim 1, characterized in that: The motor has a feed inlet (12) on its left side, which extends to the top of the outer cylinder (403) through an inclined feed pipe (13).

4. The high-efficiency solid-liquid separation device for preparing sand lotus seed according to claim 1, characterized in that: The liquid outlet (6) is equipped with a manual valve (14).

5. The high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds according to claim 1, characterized in that: An elastic sealing ring (15) is provided at the contact position between the outlet of the conical discharge hopper (7) and the top block (8).

6. The high-efficiency solid-liquid separation device for the preparation of Astragalus complanatus seeds according to claim 1, characterized in that: A handle (16) is provided in the middle section of the outer wall of the frame.

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