A multi-stage extraction device for petal mixed infusion

Abstract

The application provides a multi-stage extraction device for petal mixed leaching liquid and belongs to the technical field of plant effective component extraction equipment. The device comprises an extraction tank, a slag outlet door is rotationally connected to the front face of the extraction tank through a hinge, a feeding port is rotationally connected to the top of the slag outlet door through a hinge, a safety valve is fixedly connected to the top of the extraction tank, a liquid discharge pipe is fixedly connected to the inner wall of the bottom of the extraction tank, a guide shaft is fixedly connected to the inner wall of the extraction tank, and a pressure component is arranged in the extraction tank. The pressure component is arranged, the floating block automatically rises and falls with the liquid level, the pressure frame is above the petal layer, the turnover door tightly seals the bottom of the pressure frame when the petal floats, the petal is prevented from overflowing to the upper side, the second through hole ensures that the extraction liquid normally passes through, the liquid flow is reduced, and the uneven defects caused by the floating of the petal material to form a floating layer and the uneven soaking are avoided.

Description

Technical Field

[0001] This invention relates to the field of plant active ingredient extraction equipment, and in particular to a multi-stage extraction device for a mixed petal extract. Background Technology

[0002] Petal-based raw materials are an important source for the production of natural fragrances, extracts, and essential oils. Industrially, organic solvent extraction is commonly used to extract their active ingredients. To improve extraction efficiency and extract concentration, multi-stage countercurrent extraction devices are typically employed. This involves contacting fresh petals with a high-concentration extract and then contacting the residue near the extraction endpoint with fresh solvent, utilizing the concentration difference to achieve multi-stage mass transfer. Existing petal extraction equipment generally consists of multiple extraction tanks connected in series. Each tank is equipped with a stirring mechanism and a filtration structure. The solvent flows sequentially through each extraction tank, where the petals mix with and soak in the solvent, completing the dissolution of active ingredients. This process offers advantages such as more complete extraction and relatively lower solvent consumption, and has been widely applied in the field of deep processing of flowers.

[0003] In summary, because the density of petal-like materials is lower than that of the leaching solvent, they tend to float and accumulate on the liquid surface after being added, forming a petal-cap layer. Existing extraction tanks' stirring mechanisms primarily operate at the bottom of the tank, making it difficult to continuously press the floating material into the solvent. Existing pressing structures often use cylinders or screws, requiring manual stroke setting and failing to adapt to changes in liquid level. Furthermore, float-plate structures present operational inconvenience in a closed environment. Once the petal-cap layer forms, uneven wetting of the material easily disrupts the concentration gradient within the tank, leading to insufficient dissolution of active ingredients, reduced extraction efficiency, and difficulty in ensuring consistent product quality.

[0004] Therefore, this application provides a multi-stage extraction device for petal mixed extract to meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage extraction device for petal mixed extract to solve the aforementioned problems. Petals fall into the device through the feeding port and enter below the pressing frame after the flip-up door is opened. After the extract is injected, a float causes the pressing assembly to float on the liquid surface. A circulating pump sends the extract through a drain pipe and a circulation pipe to a sprayer for downward spraying. The impeller drives the pressing frame and stirring rod to rotate and stir. The sprayed liquid enters the petal layer through through holes, forming a circulating spray. Adjacent extraction tanks are connected in series via connecting pipes. The solvent enters from the last stage and exits from the first stage, achieving multi-stage countercurrent extraction. This avoids the formation of a floating layer of petal material, preventing uneven wetting and solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A multi-stage extraction device for a petal mixed leachate includes an extraction tank. A slag discharge door is hinged to the front of the extraction tank, and a feeding port is hinged to the top of the slag discharge door. A safety valve is fixedly connected to the top of the extraction tank. When the pressure inside the extraction tank exceeds a preset value, the safety valve automatically opens to release pressure, ensuring the safe operation of the extraction tank. A heating rod is fixedly connected to the inner wall of the extraction tank on the side away from the slag discharge door. A drain pipe is fixedly connected to the inner wall of the bottom of the extraction tank. A guide shaft is fixedly connected to the inner wall of the extraction tank. A pressing assembly is installed inside the extraction tank.

[0007] Optionally, the pressing assembly includes a floating frame, which is movably sleeved on the outer surface of the guide shaft. The inner wall of the floating frame has a groove, and a pressing frame is disposed inside the floating frame. The pressing frame is rotatably connected to the inner wall of the groove. A fixing rod is fixedly connected to the inner wall of the pressing frame, and an impeller is fixedly connected to the end of the fixing rod away from the pressing frame. When the extractant circulates, the impeller is impacted by the liquid flow and generates a rotational force, which in turn drives the pressing frame to rotate relative to the floating frame along the groove.

[0008] Optionally, the outer surface of the floating frame is fixedly connected with floats. The floats are hollow and sealed structures used to provide buoyancy. There are multiple floats, which are evenly distributed along the circumference of the floating frame. Each float is filled with inert gas, so that the floating frame can adaptively float up and down when the liquid level changes, thereby always maintaining the pressing frame at a suitable extrusion height near the liquid level.

[0009] Optionally, the bottom of the pressing frame is rotatably connected to a flip door via a torsion spring. The outer surface of the flip door is provided with a second through hole. The preload of the torsion spring is set to automatically open the flip door when the weight of the material inside the pressing frame exceeds a set value, so as to discharge the excessively accumulated material residue.

[0010] Optionally, the pressure frame is inverted conical, and a first through hole is provided on the outer surface of the pressure frame, the diameter of the first through hole being smaller than the size of the petal.

[0011] Optionally, a stirring rod is fixedly connected to the outer surface of the pressing frame, and there are multiple stirring rods, which are evenly distributed along the circumference of the outer surface of the pressing frame.

[0012] Optionally, a filter plate is provided on the inner wall of the extraction tank near the drain pipe, and the filter plate is movably sleeved on the outer surface of the guide shaft.

[0013] Optionally, a limiting block is fixedly sleeved on the outer surface of the guide shaft. The limiting block is located between the floating frame and the filter plate and is used to limit the lowest position of the floating frame. The side of the limiting block away from the guide shaft is fixedly connected to the inner wall of the extraction tank. The floating frame moves up and down along the guide shaft according to the change of the liquid level in the extraction tank.

[0014] Optionally, a circulation pump is fixedly connected to the end of the drain pipe away from the extraction tank, a first connecting valve is fixedly connected to the inner wall of the drain pipe near the circulation pump, a circulation pipe is fixedly connected to the end of the circulation pump away from the drain pipe, and a second connecting valve is fixedly connected to the top of the circulation pipe.

[0015] Optionally, a spray pipe is fixedly connected to the end of the second connecting valve away from the circulation pipe. The spray pipe passes through the extraction tank and is fixedly connected to a sprayer. The sprayer is an annular liquid distribution plate with multiple radially distributed nozzles on its lower surface, used to evenly spray the circulating liquid onto the area above the pressing frame.

[0016] Optionally, a connecting pipe is provided between two adjacent extraction tanks, one end of which is fixedly connected to a first connecting valve, and the other end is fixedly connected to a second connecting valve of an adjacent extraction tank.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: In the above-mentioned solution, the multi-stage extraction device for petal mixed leachate provided in this application, by setting up a pressing component, uses a float to automatically rise and fall with the liquid surface, so that the pressing frame is above the petal layer. When the petals float up, the flip door tightly seals the bottom of the pressing frame to prevent the petals from overflowing to the top. At the same time, the second through hole ensures that the extract can pass through normally, reducing the obstruction to the liquid flow, thereby avoiding the formation of a floating layer of petal material and the resulting uneven wetting defects. At the same time, the spray liquid impacts the impeller, causing the pressing frame and stirring rod to rotate synchronously, stirring the petals and extract below the pressing frame, so that the petals and extract are in full contact, thereby improving the dissolution efficiency of the effective ingredients. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0019] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the extraction tank structure of the present invention; Figure 3 This is a schematic cross-sectional view of the extraction vessel of the present invention; Figure 4 This is a schematic diagram of the internal structure of the extraction tank of the present invention; Figure 5 This is a schematic diagram of the pressing assembly structure of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the pressing assembly of the present invention; Figure 7 For the present invention Figure 3 A magnified structural diagram of A in the diagram.

[0020] Figure label: 1. Extraction tank; 101. Slag discharge door; 102. Feeding port; 103. Heating rod; 104. Safety valve; 105. Drain pipe; 106. First connecting valve; 107. Circulation pump; 108. Circulation pipe; 109. Second connecting valve; 110. Spray pipe; 111. Sprayer; 112. Guide shaft; 113. Limiting block; 114. Filter plate; 2. Pressing assembly; 201. Floating frame; 202. Float; 203. Slide chute; 204. Pressing frame; 205. First through hole; 206. Tilting door; 207. Fixing rod; 208. Impeller; 209. Stirring rod; 210. Second through hole; 3. Connecting pipe.

[0021] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0022] The multi-stage extraction device for a mixed petal extract provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0025] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0026] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0027] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a multi-stage extraction device for a mixed petal extract, including an extraction tank 1. A slag discharge door 101 is rotatably connected to the front of the extraction tank 1 via a hinge. The slag discharge door 101 is used to open after extraction to discharge the residue in the extraction tank 1. A feeding port 102 is rotatably connected to the top of the slag discharge door 101 via a hinge. The feeding port 102 is used to add petal material into the extraction tank 1. A safety valve 104 is fixedly connected to the top of the extraction tank 1. A heating rod 103 is fixedly connected to the inner wall of the extraction tank 1 on the side away from the slag discharge door 101. The heating rod 103 is used to heat the extract in the extraction tank 1 to improve the dissolution rate of the active ingredients. A drain pipe 105 is fixedly connected to the inner wall of the bottom of the extraction tank 1. A guide shaft 112 is fixedly connected to the inner wall of the extraction tank 1. A pressing assembly 2 is provided inside the extraction tank 1.

[0028] like Figure 4As shown, a filter plate 114 is provided on the inner wall of the extraction tank 1 near the drain pipe 105. The filter plate 114 is movably sleeved on the outer surface of the guide shaft 112. The filter plate 114 is used to filter the liquid entering the drain pipe 105 to prevent the petals from being sucked in by the circulation pump 107.

[0029] A limiting block 113 is fixedly sleeved on the outer surface of the guide shaft 112. The limiting block 113 is located between the floating frame 201 and the filter plate 114 and is used to limit the lowest position of the floating frame 201. The side of the limiting block 113 away from the guide shaft 112 is fixedly connected to the inner wall of the extraction tank 1. When the lower surface of the floating frame 201 contacts the limiting block 113, the floating frame 201 is blocked by the limiting block 113 and cannot continue to descend, thereby preventing the flip door 206 after flipping from colliding with the bottom of the filter plate 114.

[0030] A circulation pump 107 is fixedly connected to the end of the drain pipe 105 away from the extraction tank 1. A first connecting valve 106 is fixedly connected to the inner wall of the drain pipe 105 near the circulation pump 107. A circulation pipe 108 is fixedly connected to the end of the circulation pump 107 away from the drain pipe 105. A second connecting valve 109 is fixedly connected to the top of the circulation pipe 108. After the extract in the extraction tank 1 flows to the circulation pump 107 through the drain pipe 105, the circulation pump 107 provides power for the circulation of the extract, so that the liquid is transported upward through the circulation pipe 108 to the spray pipe 110.

[0031] The second connecting valve 109 is fixedly connected to a spray pipe 110 at the end away from the circulation pipe 108. The spray pipe 110 passes through the extraction tank 1 and is fixedly connected to a sprayer 111. The extract output by the circulation pump 107 reaches the spray pipe 110 through the circulation pipe 108 and is then sprayed downwards by the sprayer 111.

[0032] The sprayer 111 is located above the pressing assembly 2. The liquid sprayed from it impacts the impeller 208, driving the impeller 208 to rotate. The rotation of the impeller 208 drives the pressing frame 204 and the stirring rod 209 to rotate, thereby achieving the stirring of the petals and extract.

[0033] The liquid sprayed from the sprayer 111 passes through the first through hole 205 on the pressure frame 204 and the second through hole 210 on the flip door 206, and falls into the petal layer at the bottom of the extraction tank 1, completing the circulation spraying of the extract.

[0034] A connecting pipe 3 is provided between two adjacent extraction tanks 1. One end of the connecting pipe 3 is fixedly connected to the first connecting valve 106, and the other end is fixedly connected to the second connecting valve 109 of the adjacent extraction tank 1. The first connecting valve 106 and the second connecting valve 109 of the two adjacent extraction tanks 1 are connected through the connecting pipe 3, so that the extract discharged from the previous extraction tank 1 can enter the spray pipe 110 of the next extraction tank 1 through the connecting pipe 3, thereby forming a countercurrent extraction path in series between the multi-stage extraction tanks 1. Fresh solvent enters from the spray pipe 110 of the last extraction tank 1, while high-concentration leachate is discharged from the drain pipe 105 of the first extraction tank 1, realizing multi-stage countercurrent contact between solvent and material and improving extraction efficiency.

[0035] In this embodiment, as Figures 3 to 7 As shown, the pressing assembly 2 includes a floating frame 201, which is movably sleeved on the outer surface of the guide shaft 112. A groove 203 is formed on the inner wall of the floating frame 201. A pressing frame 204 is disposed inside the floating frame 201. Notably, the pressing frame 204 is inverted conical in shape. A first through hole 205 is formed on the outer surface of the pressing frame 204. The diameter of the first through hole 205 is smaller than the size of the petal. The pressing frame 204 is rotatably connected to the inner wall of the groove 203. A fixing rod 207 is fixedly connected to the inner wall of the pressing frame 204. An impeller 208 is fixedly connected to the end of the 07 away from the pressure frame 204. The floating frame 201 moves up and down along the guide shaft 112 according to the change of the liquid level in the extraction tank 1. The pressure frame 204 can rotate inside the floating frame 201 through the rotational cooperation between its outer wall and the slide 203, and this rotational movement will not affect the up and down floating of the floating frame 201. The fixed rod 207 fixes the impeller 208 and the pressure frame 204 into one piece, so that when the impeller 208 is impacted by the external fluid, it can drive the pressure frame 204 to rotate synchronously.

[0036] like Figure 5 and Figure 6 As shown, a float 202 is fixedly connected to the outer surface of the floating frame 201. The float 202 is a hollow and sealed structure used to provide buoyancy. The float 202 is fixed to the outer circumferential surface of the floating frame 201. After the extractant is injected into the extraction tank 1, the float 202 relies on the buoyancy generated by the hollow and sealed structure to make the floating frame 201 float near the liquid surface, so that the entire pressing assembly 2 can automatically rise and fall with the liquid level.

[0037] like Figure 6 and Figure 7 As shown, the bottom of the pressure rack 204 is rotatably connected to a flip door 206 via a torsion spring. The outer surface of the flip door 206 is provided with a second through hole 210. Specifically, the flip door 206 is in a closed position under the action of the torsion spring in its natural state, thus closing the bottom opening of the pressure rack 204.

[0038] When petals need to be added to the extraction tank 1, the petals fall into the feed port 102 and rely on their own gravity to act on the flip door 206, causing the flip door 206 to overcome the elastic force of the torsion spring and flip open downwards, allowing the petals to enter the area below the pressing rack 204; after the petals fall in, the flip door 206 closes again under the action of the torsion spring's restoring force.

[0039] When the extract is injected, the petals float up and exert an upward pushing force on the flip door 206. Since the flip door 206 can only flip downward, this pushing force will only make the flip door 206 fit more tightly against the bottom of the pressure rack 204, thus sealing it off and preventing the petals from escaping from below to above the pressure rack 204. The second through hole 210 is used to allow the extract to flow through the flip door 206 even when the flip door 206 is closed, thereby reducing the obstruction of the flip door 206 to the flow of liquid.

[0040] A stirring rod 209 is fixedly connected to the outer surface of the pressing frame 204. There are multiple stirring rods 209, which are evenly distributed around the outer surface of the pressing frame 204. When the pressing frame 204 rotates under the drive of the impeller 208, the stirring rods 209 rotate synchronously, stirring the petals and extract below the pressing frame 204 in the extraction tank 1, so that the petals can fully contact the extract and improve the dissolution efficiency of the effective ingredients.

[0041] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multi-stage extraction device for a mixed petal extract, comprising an extraction tank (1), wherein a slag discharge door (101) is rotatably connected to the front of the extraction tank (1) via a hinge, a feeding port (102) is rotatably connected to the top of the slag discharge door (101) via a hinge, a safety valve (104) is fixedly connected to the top of the extraction tank (1), a heating rod (103) is fixedly connected to the inner wall of the extraction tank (1) on the side away from the slag discharge door (101), a drain pipe (105) is fixedly connected to the inner wall of the bottom of the extraction tank (1), and a guide shaft (112) is fixedly connected to the inner wall of the extraction tank (1), characterized in that, The extraction tank (1) is equipped with a pressing assembly (2). The pressing assembly (2) includes: A floating frame (201) is movably sleeved on the outer surface of a guide shaft (112). A sliding groove (203) is provided on the inner wall of the floating frame (201). A pressure frame (204) is provided inside the floating frame (201). The pressure frame (204) is rotatably connected to the inner wall of the sliding groove (203). A fixing rod (207) is fixedly connected to the inner wall of the pressure frame (204). An impeller (208) is fixedly connected to the end of the fixing rod (207) away from the pressure frame (204).

2. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, The outer surface of the floating frame (201) is fixedly connected with a float (202), which is a hollow and sealed structure used to provide buoyancy.

3. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, The bottom of the pressure rack (204) is rotatably connected to a flip door (206) via a torsion spring, and a second through hole (210) is provided on the outer surface of the flip door (206).

4. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, The pressing frame (204) is inverted conical in shape, and a first through hole (205) is provided on the outer surface of the pressing frame (204). The diameter of the first through hole (205) is smaller than the size of the petal.

5. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, A stirring rod (209) is fixedly connected to the outer surface of the pressing frame (204). There are multiple stirring rods (209), and the multiple stirring rods (209) are evenly distributed along the circumference of the outer surface of the pressing frame (204).

6. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, The extraction tank (1) has a filter plate (114) on the inner wall of the side near the drain pipe (105), and the filter plate (114) is movably sleeved on the outer surface of the guide shaft (112).

7. The multi-stage extraction device for petal mixed extract according to claim 6, characterized in that, A limiting block (113) is fixedly sleeved on the outer surface of the guide shaft (112). The limiting block (113) is located between the floating frame (201) and the filter plate (114) and is used to limit the lowest position of the floating frame (201). The side of the limiting block (113) away from the guide shaft (112) is fixedly connected to the inner wall of the extraction tank (1).

8. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, A circulation pump (107) is fixedly connected to the end of the drain pipe (105) away from the extraction tank (1). A first connecting valve (106) is fixedly connected to the inner wall of the drain pipe (105) near the circulation pump (107). A circulation pipe (108) is fixedly connected to the end of the circulation pump (107) away from the drain pipe (105). A second connecting valve (109) is fixedly connected to the top of the circulation pipe (108).

9. The multi-stage extraction device for petal mixed extract according to claim 8, characterized in that, The second connecting valve (109) is fixedly connected to a spray pipe (110) at one end away from the circulation pipe (108). The spray pipe (110) passes through the extraction tank (1) and is fixedly connected to a sprayer (111).

10. The multi-stage extraction device for petal mixed extract according to claim 1, characterized in that, A connecting pipe (3) is provided between two adjacent extraction tanks (1). One end of the connecting pipe (3) is fixedly connected to the first connecting valve (106), and the other end is fixedly connected to the second connecting valve (109) of the adjacent extraction tank (1).

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