Gradient percolation device capable of accurately controlling flow velocity

Abstract

The utility model discloses a gradient percolation device capable of accurately controlling the flow speed, and belongs to the field of traditional Chinese medicine preparation equipment. The percolation device mainly comprises a percolation column (1), a scale window (2), a feeding port (3), a liquid outlet pipe (4) and an emptying valve (5). An online solvent preparation system (20) is arranged at the top of the percolation column (1) and is communicated with the percolation column (1) through a solvent pipeline (26); a liquid outlet valve (7) is arranged at the bottom of the percolation column (1) and is communicated with the flow stabilizing system (30) through a liquid outlet pipe (4). The traditional Chinese medicine percolation device is novel in design, scientific in structure and convenient to operate, the problem that the flow speed is difficult to control due to uneven charging and liquid level height pressure difference in percolation production can be effectively solved, the labor cost is saved, the quality of percolation liquid is improved, and the percolation operation efficiency of traditional Chinese medicinal materials is improved.

Description

Technical Field

[0001] The utility model discloses a gradient percolation device for accurately controlling flow rate, which is suitable for percolation extraction of effective components of traditional Chinese medicine and natural medicine and belongs to the field of traditional Chinese medicine pharmaceutical equipment. Background Art

[0002] Percolation is a common method in the field of Chinese medicine extraction. The percolation method is to place moderately crushed raw medicinal materials in a percolation column, continuously add solvent from the top, and extract the medicinal ingredients during the process of the solvent flowing through the medicinal material layer and flowing downward. In the production of Chinese medicine percolation, the percolation endpoint is generally determined by a fixed percolation liquid collection amount. When the percolation extraction solvent and the medicinal material column diameter-to-height ratio are constant, the percolation solvent flow rate is the main factor affecting the percolation extraction effect.

[0003] The existing percolation device has the following main problems during the percolation operation: First, in the percolation process research, the percolation flow rate is mainly controlled by adjusting the spiral clamp or valve at the bottom of the percolation column, which is difficult to adjust, especially when the flow rate is small (such as less than 1mL / min), it is difficult to adjust accurately, and the difference between batches is huge. It is difficult to repeat the flow rate of the previous batch in the next batch of percolation, resulting in significant differences between percolation batches; second, the percolation process requires frequent addition of percolation solvent. When the liquid level rises, the pressure at the bottom of the percolation column increases, and the percolation flow rate also increases; when the liquid level decreases, the pressure at the bottom of the percolation column decreases, and the flow rate also decreases. The above factors can cause the flow rate to fluctuate, and it becomes extremely difficult to maintain a stable flow rate; finally, in the conventional percolation production process, the percolation solvent needs to be prepared manually in advance, and the preparation amount is not easy to control. After the solvent is prepared, it needs to be temporarily stored in a temporary storage tank. During the temporary storage process, some organic solvents will volatilize, affecting the ethanol concentration of the prepared solvent, and causing equipment occupation. At the same time, volatile solvents are also a safety hazard. Utility Model Content

[0004] In view of the above-mentioned deficiencies existing in the existing percolation operation, the technical problem to be solved by the utility model is to provide a Chinese medicine gradient percolation device with accurate flow rate control.

[0005] The technical problem solved by the utility model is specifically achieved by the following technical solutions:

[0006] A gradient percolation device for accurately controlling flow rate, mainly composed of a percolation column 1, a scale window 2, a feed port 3, a liquid outlet pipe 4 and a vent valve 5, and its special features are:

[0007] An online solvent preparation system 20 is provided at the top of the percolation column 1 and is connected to the percolation column 1 through a solvent pipeline 26; a liquid outlet valve 7 is provided at the bottom of the percolation column 1 and is connected to the steady flow system 30 through a liquid outlet pipe 4.

[0008] The online solvent preparation system 20 is connected to the first solvent pump 23 by an ethanol pipeline 21, and the drinking water pipeline 22 is connected to the second solvent pump 24. The ethanol pipeline 21 and the drinking water pipeline 22 are connected to the mixer 25 in parallel, and the mixer 25 is connected to the top of the percolation column 1 through the solvent pipeline 26.

[0009] In the utility model, the flow stabilizing system 30 is composed of a T-shaped communicating vessel 9, a base 31, a support rod 32, a fixing point 33, a telescopic rod 34, a supporting plate 35, and a fixing pin 36. The T-shaped communicating vessel 9 is placed on a supporting plate 35 with adjustable height, and an emptying port 10 is provided at the upper end of the T-shaped communicating vessel 9.

[0010] The telescopic rod 34 is inserted into the support rod 32 and is movably connected to the support rod 32 through the fixing point 33 and the fixing pin 36. A groove 37 is arranged in the middle of the support plate 35, and the T-shaped connecting tube 9 is placed in the groove 37 to maintain a fixed connection.

[0011] In the present invention, the T-shaped connecting vessel 9 is made of a transparent rigid material 9, and the transparent rigid material is preferably one of organic glass, high borosilicate glass, polycarbonate or PP.

[0012] The liquid outlet tube 4 is made of a transparent soft material, and the transparent soft material is preferably one of silica gel, polyurethane, and PVC.

[0013] When the utility model is a gradient percolation device with precise flow rate control, the online solvent preparation system 20 first prepares the elution solvent and enters the percolation column 1 from the top through the solvent pipeline 26, and at the same time, the exhaust valve 6 is opened to exhaust the air inside the percolation column 1. The height of the telescopic rod 34 in the steady flow system 30 is adjusted, and the telescopic rod 34 and the support rod 32 are fixedly connected at the fixed point 33 by the fixed pin 36. The T-shaped communicating vessel 9 is provided with an emptying port 10, and the top of the percolation column 1 is provided with a vent valve 5. When the emptying port 10 and the vent valve 5 are kept in an open state, the internal pressure of the T-shaped communicating vessel 9 and the percolation column 1 are the same, so that the liquid level in the T-shaped communicating vessel 9 is flush with the liquid level inside the percolation column 1.

[0014] The flow rate of the online solvent preparation system 20 is set so that the solvent is injected into the percolation column 1 from top to bottom through the solvent pipeline 26 at the set flow rate. At this time, the flow rate of the percolate flowing out of the liquid outlet pipe 4 is always the same as the flow rate set by the online solvent preparation system 20, which solves the technical problem that the percolation flow rate fluctuates due to the pressure change caused by the change in the liquid level of the percolation solvent during the percolation process.

[0015] The utility model aims at the common technical difficulties existing in the existing percolation devices, such as "the percolation flow rate is controlled by adjusting the spiral clamp or valve at the bottom of the percolation column, which is difficult to adjust and there are significant differences between batches of percolation liquid" and "the percolation flow rate fluctuates during conventional percolation operation and it is difficult to maintain a stable flow rate". The inventor optimizes and integrates the units of the existing percolation column, and realizes precise control of the flow rate by setting up new structures such as the online solvent preparation system 20 and the flow stabilization system 30, thereby realizing efficient and continuous operation of the percolation extraction of traditional Chinese medicine, improving the extraction efficiency of the effective ingredients in the percolation operation, saving the manpower and material costs of production, and improving production efficiency.

[0016] The utility model has a scientific and reasonable structure, is easy to operate, is environmentally friendly, produces significant technical effects, and is suitable for large-scale production in workshops. Compared with the existing conventional percolation columns, the utility model has the following substantial features and improvements:

[0017] 1. The utility model is ingeniously conceived. The core component T-shaped connecting vessel 9 is provided with an emptying port 10, and the percolation column 1 is provided with a vent valve 5. The above two openings are connected to the outside atmosphere, and then the height of the steady flow system 30 is adjusted so that the liquid level of the T-shaped connecting vessel 9 is always flush with the liquid level inside the percolation column 1, ensuring that the internal pressure of the T-shaped connecting vessel 9 is consistent with that of the percolation column 1, thereby solving the technical problem of pressure change caused by the change in the liquid level height of the percolation solvent during the percolation process, thereby causing the percolation speed to change, improving the extraction efficiency of the effective ingredients of traditional Chinese medicine in the percolation production, saving the manpower and material costs of production, and improving the efficiency of the percolation operation.

[0018] 2. The utility model is provided with an online solvent preparation system 20 at the top of the percolation column 1, wherein the first solvent pump 23 and the second solvent pump 24 can independently adjust the flow rate, thereby controlling the ratio of ethanol and drinking water. The above solvents are mixed by the mixer 25 and injected into the percolation column 1 at a precise flow rate, so as to realize online preparation of percolation solvents, which can be prepared as needed, accurately and reliably, without frequent addition of liquid, and manual adjustment of flow rate, thus saving manpower and material costs, and avoiding the volatilization of solvents and safety risks during temporary storage of solvents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 A gradient percolation device that precisely controls flow rate

[0020] The reference numerals are described as follows:

[0021] 1-percolation column; 2-scale window; 3-feeding port; 4-liquid outlet pipe; 5-vent valve; 6-exhaust valve; 7-liquid outlet valve; 8-hydraulic device; 9-T-shaped connecting vessel; 10-drain port.

[0022] 20-Online solvent preparation system

[0023] 21 - ethanol pipeline; 22 - drinking water pipeline; 23 - first solvent pump; 24 - second solvent pump; 25 - mixer; 26 - solvent pipeline.

[0024] 30 - Flow-stabilizing system

[0025] 31 - base; 32 - support rod; 33 - fixing point; 34 - telescopic rod; 35 - supporting plate; 36 - fixing pin.

[0026] Attached Figure 2 A partial enlarged schematic diagram of a T-shaped connecting vessel

[0027] The symbols in the accompanying drawings are described as follows:

[0028] 9 - T-shaped connecting vessel; 10 - drain port; 4 - liquid outlet pipe.

[0029] Attached Figure 3 This is a partial enlarged schematic diagram of the support frame, and the symbols in the figure are described as follows:

[0030] 32 - support rod; 33 - fixing point; 34 - telescopic rod; 36 - fixing pin.

[0031] Attached Figure 4 A partial enlarged schematic diagram of the support plate

[0032] 35 - support plate; 37 - groove. DETAILED DESCRIPTION

[0033] The practical and efficient specific implementation method of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solutions and advantages of this application clearer and more explicit, the technical solutions in the embodiments will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the following embodiments are part of the embodiments of this application, but not all of them. Generally speaking, the components and connection methods described and shown in the accompanying drawings and the embodiments can be set and arranged in other ways, which are not listed here one by one due to limited space.

[0035] Example 1 Structure and operation mode of efficient Chinese medicine percolation device

[0036] As attached Figure 1 As shown, the utility model is a gradient percolation device for accurately controlling flow rate, which is mainly composed of a percolation column 1, a scale window 2, a feed port 3, a liquid outlet pipe 4 and a vent valve 5. An online solvent preparation system 20 is arranged on the top of the percolation column 1 and is connected to the percolation column 1 through a solvent pipeline 26; a liquid outlet valve 7 is arranged on the bottom of the percolation column 1, and the liquid outlet valve 7 is connected to a flow stabilization system 30 through a liquid outlet pipe 4.

[0037] The online solvent preparation system 20 is connected to the first solvent pump 23 by an ethanol pipeline 21, and the drinking water pipeline 22 is connected to the second solvent pump 24. The ethanol pipeline 21 and the drinking water pipeline 22 are connected to the mixer 25 in parallel, and the mixer 25 is connected to the top of the percolation column 1 through the solvent pipeline 26.

[0038] In the utility model, the flow stabilization system 30 is composed of a T-shaped connecting tube 9, a base 31, a support rod 32, a fixing point 33, a telescopic rod 34, a support plate 35, and a fixing pin 36. The T-shaped connecting tube 9 is placed on the support plate 35 with adjustable height, and an emptying port 10 is provided at the upper end of the T-shaped connecting tube 9. The telescopic rod 34 is inserted into the support rod 32 and is movably connected to the support rod 32 through the fixing point 33 and the fixing pin 36. A groove 37 is provided in the middle of the support plate 35, and the T-shaped connecting tube 9 is placed in the groove 37 to maintain a fixed connection.

[0039] Specifically, when performing the percolation operation of Chinese herbal medicine slices, the Chinese herbal medicine slices are first wetted with solvents and fully expanded before being loaded into the barrel. First, the discharge valve 7 is closed, the exhaust valve 6 and the vent valve 5 are opened, and the coarse powder of Chinese herbal medicine is fed into the percolation column 1 through the feeding port 3. The feeding port 3 is closed, and the flow rates of the first solvent pump 23 and the second solvent pump 24 are adjusted according to the set solvent type and target solvent concentration. The solvent is mixed through the mixer 25, and the elution solvent is prepared and enters the percolation column 1 from the top through the solvent pipeline 26. When the percolation liquid flows out from the exhaust valve 6, it indicates that the air inside the percolation column 1 is exhausted, the exhaust valve 6 is closed, the liquid outlet valve 7 is opened, and the percolate flows into the T-shaped connecting vessel 9 from the liquid outlet pipe 4. Adjust the height of the telescopic rod 34 in the flow stabilization system 30, and fix the telescopic rod 34 and the support rod 32 at the fixed point 33 through the fixed pin 36. Through the emptying port 10 and the vent valve 5, the T-shaped connecting vessel 9 has the same internal pressure as the percolation column 1, so that the liquid level in the T-shaped connecting vessel 9 is flush with the liquid level inside the percolation column 1. At this time, the flow rate of the liquid flowing out of the liquid outlet pipe 4 is always consistent with the flow rate of the online solvent preparation system 20, and the percolation liquid is collected. After the percolation operation is completed, the hydraulic device 8 is turned on to discharge the residue and clean the operation site, and the percolation operation of the Chinese medicine slices is completed.

Claims

1. A gradient percolation device for accurately controlling flow rate, mainly comprising a percolation column (1), a graduated window (2), a feed port (3), a liquid outlet pipe (4) and a vent valve (5), characterized in that: An online solvent preparation system (20) is provided at the top of the percolation column (1) and is connected to the percolation column (1) via a solvent pipeline (26); a liquid outlet valve (7) is provided at the bottom of the percolation column (1), and the liquid outlet valve (7) is connected to the flow stabilization system (30) via a liquid outlet pipe (4); The flow stabilizing system (30) is composed of a T-shaped connecting vessel (9), a base (31), a support rod (32), a fixing point (33), a telescopic rod (34), a supporting plate (35), and a fixing pin (36); a groove (37) is provided in the middle of the supporting plate (35); The telescopic rod (34) is inserted into the support rod (32) and is movably connected to the support rod (32) via a fixing point (33) and a fixing pin (36); The T-shaped connecting tube (9) is provided with an emptying port (10) at the upper end. The T-shaped connecting tube (9) is placed on a support plate (35) with adjustable height and is placed in the groove body of the groove (37) to maintain a fixed connection.

2. The gradient percolation device according to claim 1, characterized in that The online solvent preparation system (20) is connected to a first solvent pump (23) via an ethanol pipeline (21), and to a second solvent pump (24) via a drinking water pipeline (22). The ethanol pipeline (21) and the drinking water pipeline (22) are connected to a mixer (25) in parallel, and the mixer (25) is connected to the top of the percolation column (1) via a solvent pipeline (26).

3. The gradient percolation device according to claim 1, characterized in that The T-shaped connecting vessel (9) is made of a transparent rigid material.

4. The gradient percolation device according to claim 3, characterized in that The transparent rigid material is one of organic glass, high borosilicate glass, polycarbonate or PP.

5. The gradient percolation device according to claim 1, characterized in that The liquid outlet pipe (4) is made of a transparent soft material.

6. The gradient percolation device according to claim 5, characterized in that The transparent soft material is one of silica gel, polyurethane and PVC.

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