Automatic dosing device
By designing an automatic dosing device with a storage hopper, weighing box, sieve plate, and telescopic rod, the problems of inaccurate drug dosing and difficulty in cleaning large particles of impurities during the extraction of traditional Chinese medicine were solved, achieving quantitative input of medicinal materials and improving the quality of the extract.
Patent Information
- Application Number
- CN202520123330.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing Chinese medicine extraction devices cannot accurately add the appropriate weight of medicinal materials during the drug addition process, and cannot effectively remove large particles of drugs that are not sufficiently crushed or large particles of impurities mixed in with the drugs, which affects the quality of drug extraction and causes material waste.
Design an automatic drug dosing device, including a drug storage hopper, a weighing box, a sieve plate, and a telescopic rod. The device achieves accurate drug dosing through sieving and weighing, and separates large-particle drugs and impurities, ensuring quantitative input and extraction quality of medicinal materials.
It enables accurate quantitative input of medicinal materials during the extraction process of traditional Chinese medicine, improves the quality of drug extract, avoids material waste, and has a simple structure and low cost. It is suitable for extraction processes in industries such as traditional Chinese medicine, plants, biopharmaceuticals, food, and chemicals.
Smart Images
Figure CN223732152U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an automatic drug dosing device, belonging to the field of traditional Chinese medicine extraction. Background Technology
[0002] The chemical composition of traditional Chinese medicine (TCM) is highly complex, containing various effective components, ineffective components, and even toxic components. TCM extraction utilizes techniques to maximize the extraction of these effective components, and may even involve further separation and purification to obtain effective monomers. This improves the intrinsic quality and clinical efficacy of TCM preparations, maximizing their therapeutic effects. Traditional extraction methods include decoction, maceration, percolation, modified gelatin extraction, reflux extraction, solvent extraction, steam distillation, and sublimation, with the appropriate method selected based on the specific characteristics of the medicinal material.
[0003] When extracting components from traditional Chinese medicine (TCM) decoctions, the medicinal herbs are added to the extraction tank via a dosing device for decoction. TCM extraction tanks are suitable for various processes in industries such as TCM, plants, biopharmaceuticals, food, and chemicals, including atmospheric pressure, low pressure, water decoction, warm soaking, hot reflux forced circulation, osmosis, extraction of aromatic oil components, and recovery of organic solvents. They are suitable for laboratory research and development in universities, research institutes, and enterprises, as well as pilot production in small and medium-sized production lines.
[0004] The medicinal herbs must first be washed, and then drained of excess water to avoid affecting the extraction quality. They are then pulverized and added to the extraction tank via a dosing device. The precise weight (dosage) of the herbs is crucial. However, existing dosing devices for medicinal herb extraction tanks typically pour the pulverized herbs directly into the extraction tank, failing to accurately add the appropriate weight, which can negatively impact the extraction quality. Furthermore, traditional dosing devices lack filtration components, resulting in the inability to remove large, poorly pulverized herbs or impurities, leading to material waste and reduced quality of the subsequent extract. While some existing technical literature incorporates weighing and filtration systems in the dosing device, these designs are often overly complex, costly, and inconvenient for production. Summary of the Invention
[0005] In order to overcome the shortcomings of the prior art, the present invention provides an automatic dosing device.
[0006] The technical solution adopted by this utility model is as follows: an automatic dosing device is designed and installed on one side of the extraction tank. It includes a storage hopper, a weighing box, a sieve plate, and a telescopic rod. The weighing box has a feeding channel at its upper part, and the storage hopper is installed on and connected to the feeding channel. A solenoid valve is installed on the storage hopper. A first discharge channel and a second discharge channel are respectively provided on opposite sides of the weighing box. The first discharge channel is connected to the extraction tank. The telescopic rod is installed on the weighing box on the side where the second discharge channel is located. A weighing device is installed at the bottom of the weighing box. The telescopic end of the telescopic rod is located inside the weighing box and a push plate is installed on it. The sieve plate is installed inside the weighing box above the push plate.
[0007] When adding medicine into the extraction tank, the solenoid valve is opened, and the medicine falls into the screening plate through the feed channel and is screened into coarse and fine materials. The fine materials enter the weighing device for weighing and are pushed out by the push plate and enter the extraction tank along the first discharge channel, while the coarse materials are discharged along the second discharge channel.
[0008] Furthermore, the screening plate is fixed at an inclination inside the weighing box, with one end higher than the first discharge channel and the other end lower than the second discharge channel. A gap is left between the end of the screening plate near the second discharge channel and the side wall of the weighing box. The right side of the weighing device and the push plate do not extend beyond the right side of the screening plate. The screening plate and the push plate divide the weighing box into a coarse material chamber and a fine material chamber.
[0009] Furthermore, the weighing box is provided with an overlap interface, one end of the screening plate is hinged to the push plate, and the other end is placed on the overlap interface. The screening plate is kept in an inclined state inside the weighing box, and is higher at the first discharge channel and lower at the second discharge channel.
[0010] Furthermore, the interface is an oblique opening, and the vertical distance between the upper and lower edges of the interface is not less than the thickness of the screening plate.
[0011] Furthermore, the feed channel is located on the upper part of the side of the weighing box where the first feed channel is located.
[0012] Furthermore, both the first and second discharge channels have a gradually converging structure, and both are connected to the weighing box at their larger ends.
[0013] Furthermore, the ends of the first and second discharge channels that are away from the weighing box gradually slope downwards, and the extraction tank is provided with an upwardly inclined dosing port, which is connected to the first discharge channel.
[0014] Furthermore, the weighing box adopts a rectangular box structure, and the first discharge channel and the second discharge channel are both rectangular openings of the same width as the weighing box at one end.
[0015] Furthermore, the end of the first discharge channel furthest from the weighing box is configured as a square opening with a first connecting flange thereon. The dosing port is configured as a similar square opening with a second connecting flange thereon. The first and second connecting flanges are locked together by a multi-set bolt assembly.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This invention, through the design of a weighing box, weighing device, sieve plate, telescopic rod, and push plate, enables accurate and automatic quantitative drug addition during the extraction of traditional Chinese medicine. It also allows for pre-sieving of the added drugs, ensuring accurate addition of the appropriate weight of medicinal materials while removing large, poorly pulverized particles or impurities from the drugs during addition. This guarantees the quality of the extracted herbs, avoids material waste, and improves the quality of the subsequent extract. Furthermore, the entire weighing structure is quite simple, cost-effective in practical use, and more conducive to production. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the isometric view of this utility model.
[0020] Figure 2 This is a schematic cross-sectional view of the present invention.
[0021] Figure 3 This is a magnified schematic diagram of part A of the present invention.
[0022] Figure 4 This is a magnified schematic diagram of part B of the present invention.
[0023] In the diagram: 1. Extraction tank; 2. Storage hopper; 3. Weighing box; 4. Screening plate; 5. Telescopic rod; 6. Feed channel; 7. Solenoid valve; 8. First discharge channel; 9. Second discharge channel; 10. Weighing device; 11. Push plate; 12. Coarse material chamber; 13. Fine material chamber; 14. Overlapping joint; 15. Dosing port; 16. First connecting flange; 17. Second connecting flange. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Example 1
[0027] like Figure 1-2 As shown, an automatic drug dosing device is installed on one side of an extraction tank 1. It includes a drug storage hopper 2, a weighing box 3, a sieve plate 4, and a telescopic rod 5. The drug storage hopper 2 is used to receive and store pulverized drugs. The weighing box 3 is provided with a feeding channel 6 at its upper part. The drug storage hopper 2 is installed on the feeding channel 6 and is connected to the weighing box 3 through the feeding channel 6. The drug storage hopper 2 is provided with a solenoid valve 7, which controls the drugs in the drug storage hopper 2 to enter the weighing box 3. The weighing box 3 is provided with a first discharge channel 8 and a second discharge channel 9 on opposite sides. The first discharge channel 8 is connected to the extraction tank 1. The telescopic rod 5 is provided on the weighing box 3 on the side where the second discharge channel 9 is located (it can be fixed by bolts). The telescopic rod 5 can be a hydraulic telescopic rod 5, an electric telescopic rod 5, etc. In this embodiment, a hydraulic telescopic rod 5 is preferred. A weighing device 10 is provided at the bottom of the weighing box 3. The telescopic end of the telescopic rod 5 is located inside the weighing box 3 and a push plate 11 is installed on it. The weighed medicine on the weighing device 10 is pushed out of the weighing box 3 by the push plate 11. The sieve plate 4 (with dense sieve holes) is provided in the weighing box 3 on the upper side of the push plate 11. The medicine coming out of the medicine storage hopper 2 is sieved by the sieve plate 4 to separate large particles of medicine or impurities.
[0028] When adding medicine into the extraction tank 1, the solenoid valve 7 is opened, and the medicine falls into the sieve plate 4 through the feed channel 6 and is sieved into coarse and fine materials. The fine materials enter the weighing device 10 for weighing and are pushed out by the push plate 11 and enter the extraction tank 1 along the first discharge channel 8. The coarse materials are discharged along the second discharge channel 9.
[0029] Example 2
[0030] This embodiment, based on embodiment 1, provides a configuration of the sieve plate 4 structure, specifically as follows:
[0031] The screening plate 4 is fixed at an inclination inside the weighing box 3, with one end of the first discharge channel 8 higher than the other end of the second discharge channel 9, and the inclination is about ten degrees. A gap is left between the end of the screening plate 4 near the second discharge channel 9 and the side wall of the weighing box 3. The screened coarse material is discharged along the gap and enters the second discharge channel 9. The right side of the weighing device 10 and the push plate 11 do not extend beyond the right side of the screening plate 4. The screening plate 4 and the push plate 11 divide the weighing box 3 into a coarse material chamber 12 and a fine material chamber 13, so that the screened materials do not interfere with each other.
[0032] Example 3
[0033] This embodiment provides another configuration of the sieve plate 4 structure based on embodiment 1, specifically as follows:
[0034] The weighing box 3 is provided with an interface 14, such as Figure 4 As shown, one end of the screening plate 4 is hinged to the push plate 11, as... Figure 3 As shown, the other end is placed on the interface 14. The screening plate 4 is kept in an inclined state in the weighing box 3, and is higher at one end of the first discharge channel 8 and lower at one end of the second discharge channel 9. The screening plate 4 and the push plate 11 also divide the weighing box 3 into a coarse material chamber 12 and a fine material chamber 13, so that the screened materials do not interfere with each other.
[0035] When adding medicine to extraction tank 1, open solenoid valve 7. The medicine falls through feed channel 6 onto sieve plate 4 and is sieved into coarse and fine materials. Fine materials enter weighing device 10, while coarse materials accumulate on the right side of weighing box 3. When the weight of fine materials on weighing device 10 reaches the set or required value, close solenoid valve 7 and activate telescopic rod 5. Telescopic rod 5 pushes push plate 11 and sieve plate 4 to the left (sieve plate 4 extends through interface 14). Push plate 11 pushes the fine materials on weighing device 10 into the first discharge channel 8 and then into extraction tank 1. At the same time, the coarse materials accumulated on sieve plate 4 (under the scraping action of interface 14) are discharged from sieve plate 10. 4. The material falls from the screen plate 4 (the material scraped off by the interface 14 is less likely to cause blockage). After the push plate 11 pushes all the fine material on the weighing device 10 into the extraction tank 1, the telescopic rod 5 drives the push plate 11 and the screen plate 4 to move to the right and reset. During the reset process, the push plate 11 pushes the coarse material in the weighing box 3 into the second discharge channel 9 and discharges it (the timely discharge of coarse material makes it easier for the next screening process; a coarse material recovery conveying device or receiving container can be set at the outlet end of the second discharge channel 9 to quickly recover and transfer coarse material, not shown in the attached figure). Then the next screening and quantitative weighing automatic dosing process begins.
[0036] A solenoid valve 7 (not shown in the attached figure) can also be installed on the first discharge channel 8. The solenoid valve 7 on the first discharge channel 8 is only opened when it is necessary to add medicine to the extraction tank 1 after weighing is completed, and is kept closed at other times to reduce the amount of steam and other substances in the extraction tank 1 entering the weighing box 3.
[0037] The above-mentioned automatic control process can be achieved using existing technologies (such as PLC control), and will not be described in detail here.
[0038] In this embodiment, the interface 14 is an angled opening, and the vertical distance between the upper and lower edges of the interface 14 is not less than the thickness of the screening plate 4. This facilitates the smooth entry and exit of the screening plate 4 into the weighing box 3 through the interface 14 during the movement pushed by the telescopic rod 5, while preventing the interface 14 from being too large and causing a large amount of material dust to fly out. Of course, it is also possible to use a flat opening with a larger width for the interface 14.
[0039] Example 4
[0040] This embodiment is a further optimization and refinement of the structure of the symmetrical gauge box 3 based on embodiment 3, specifically as follows:
[0041] The feed channel 6 is located on the upper part of the side of the weighing box 3 where the first feed channel 6 is located, so that the medicine coming out of the feed channel 6 can be screened more comprehensively and over a larger area by the sieve plate 4, resulting in a better screening effect.
[0042] In this embodiment, both the first discharge channel 8 and the second discharge channel 9 have a gradually converging structure, and both are connected to the weighing box 3 at their larger ends, which facilitates centralized discharge.
[0043] In this embodiment, the ends of the first discharge channel 8 and the second discharge channel 9 that are away from the weighing box 3 gradually slope downwards. The extraction tank 1 is provided with an upwardly inclined dosing port 15, which is connected to the first discharge channel 8 to facilitate rapid discharge.
[0044] Example 5
[0045] This embodiment is a further optimization and refinement of the structure of the symmetrical gauge box 3 based on embodiment 4, specifically as follows:
[0046] The weighing box 3 adopts a rectangular box structure. The first discharge channel 8 and the second discharge channel 9 are both rectangular openings of the same width as the weighing box 3 at one end, which facilitates material discharge.
[0047] In this embodiment, the end of the first discharge channel 8 away from the weighing box 3 is set as a square opening, which is convenient for design, manufacturing and production. A first connecting flange 16 is provided on it. The dosing port 15 is set as the same square opening, and a second connecting flange 17 is provided on it. The first connecting flange 16 and the second connecting flange 17 are locked by multiple sets of bolt assemblies (not shown in the figure), and the connection is reliable.
[0048] It is understood that this utility model can also be used in other screening and quantitative feeding production processes besides traditional Chinese medicine extraction, and no limitation is made here.
[0049] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple," "multiple roots," and "multiple groups" mean two or more, and "several," "several roots," and "several groups" mean one or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance.
[0050] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. An automatic dosing device provided on one side of an extraction tank, characterized in that: Including the medicine storage hopper, the weighing box, the screening board and the telescopic rod, the upper part of the weighing box is provided with the feeding channel, the medicine storage hopper is installed on the feeding channel and communicates with it, and the upper part of the medicine storage hopper is provided with the electromagnetic valve;The opposite side of the weighing box is provided with the first discharge channel and the second discharge channel respectively, the first discharge channel communicates with the extraction tank, the telescopic rod is arranged on the weighing box on the side where the second discharge channel is located, the bottom of the weighing box is provided with the weighing device, the telescopic rod is located in the weighing box, and the push plate is installed on the telescopic rod;The screening board is arranged in the weighing box on the upper side of the push plate. When the medicine is added to the extraction tank, the electromagnetic valve is opened, the medicine falls on the screening board through the feeding channel and is screened into coarse material and fine material, the fine material is weighed on the weighing device and is pushed out along the first discharge channel and into the extraction tank, and the coarse material is discharged along the second discharge channel.
2. The automatic dosing device according to claim 1, characterized in that: The screening board is fixedly inclined in the weighing box, and is high at one end of the first discharge channel and low at one end of the second discharge channel, a gap is left between the screening board close to one end of the second discharge channel and the side wall of the weighing box, the right side of the weighing device and the push plate do not exceed the right side of the screening board, and the screening board and the push plate separate the weighing box into a coarse material cavity and a fine material cavity.
3. The automatic dosing device according to claim 1, characterized in that: The upper part of the weighing box is provided with a lap joint, one end of the screening board is hinged to the push plate, the other end is placed on the lap joint, the screening board remains in an inclined state in the weighing box, and is high at one end of the first discharge channel and low at one end of the second discharge channel.
4. The automatic dosing device according to claim 3, characterized in that: The lap joint is a diagonal port, and the vertical distance between the upper edge and the lower edge of the lap joint is not less than the thickness of the screening board.
5. The automatic dosing device according to any one of claims 1 to 4, characterized in that: The feeding channel is arranged on the upper part of the side of the weighing box where the first feeding channel is arranged.
6. The automatic dosing device according to claim 5, characterized in that: The first discharge channel and the second discharge channel are both gradually converging structures, and both are connected to the weighing box at the large end.
7. The automatic dosing device according to claim 6, characterized in that: The end of the first discharge channel and the second discharge channel away from the weighing box gradually inclines downward, the extraction tank is provided with an upwardly inclined medicine adding port, and the medicine adding port communicates with the first discharge channel.
8. The automatic dosing device according to claim 7, characterized in that: The weighing box adopts a rectangular box structure, and the first discharge channel and the second discharge channel are both rectangular ports with the same width as the weighing box at one end of the weighing box.
9. The automatic dosing device according to claim 8, characterized in that: The end of the first discharge channel away from the weighing box is arranged as a square port, and a first connecting flange is arranged on the square port, the medicine adding port is arranged as a square port, and a second connecting flange is arranged on the square port, and the first connecting flange and the second connecting flange are locked by a plurality of bolt assemblies.