Material extraction kettle

Abstract

The utility model discloses a material extraction kettle which comprises an extraction barrel, an air inlet pipe communicated with an inner cavity of the extraction barrel is arranged on the bottom wall of the extraction barrel, a material barrel is further placed in the inner cavity of the extraction barrel, a mesh plate is installed on the bottom wall of the material barrel, and the material extraction kettle further comprises a supporting device installed in the inner cavity of the extraction barrel. The supporting device comprises a supporting barrel, a supporting plate and a bottom plate, the annular supporting plate is fixedly installed on the top wall of the supporting barrel, the bottom plate is fixedly installed on the bottom wall of the supporting barrel, the bottom wall of the bottom plate abuts against the bottom wall of an inner cavity of the extraction barrel, and the bottom wall of the material barrel abuts against the top wall of the supporting plate; and a distance L is reserved between the gas outlet of the gas inlet pipe and the mesh plate, so that compared with the manner that the mesh plate on the material barrel is directly propped against the bottom wall of the extraction barrel in the traditional scheme, the risk that the material is perforated by supercritical carbon dioxide gas is reduced, and the extraction effect of the material is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction kettles, in particular to a material extraction kettle. Background Art

[0002] The principle of the supercritical carbon dioxide extraction and separation process is to use the special dissolving effect of supercritical carbon dioxide on certain special natural products, and to use the relationship between the dissolving capacity of supercritical carbon dioxide and its density to achieve the purpose of product separation and purification.

[0003] Supercritical carbon dioxide is generally used to separate or purify materials in an extraction kettle, such as Figure 1 As shown, it includes an extraction barrel 1 and a material barrel 2 installed in the inner cavity of the extraction barrel 1, wherein the bottom wall of the material barrel 2 is provided with a mesh plate 21, the bottom wall of the mesh plate 21 is abutted against the bottom wall of the extraction barrel 1, and an air inlet pipe 11 is also installed at the bottom of the extraction barrel 1, through which high-pressure supercritical carbon dioxide is transported to the inside of the extraction barrel 1; the supercritical carbon dioxide enters the interior of the material barrel 2 through the mesh plate 21 for extracting the material, because the supercritical carbon dioxide is directly rushed out from the air inlet pipe 11, at this time, the high-pressure carbon dioxide gas is easy to form perforations in the material, and at this time the carbon dioxide gas will directly spray upward, resulting in poor extraction effect of the material.

[0004] Therefore, how to design an extraction kettle to solve the perforation phenomenon during material extraction has become a technical problem that needs to be solved urgently by people in this field. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide a material extraction kettle to solve the problem of material perforation when the material is extracted with supercritical carbon dioxide.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A material extraction kettle comprises an extraction barrel, the bottom wall of which is provided with an air inlet pipe connected to an inner cavity of the extraction barrel, a material barrel is also placed in the inner cavity of the extraction barrel, a mesh plate is installed on the bottom wall of the material barrel, and a supporting device installed in the inner cavity of the extraction barrel is also provided, the supporting device comprises a supporting cylinder, a supporting plate and a bottom plate, the supporting plate is annular and fixedly installed on the top wall of the supporting cylinder, the bottom plate is fixedly installed on the bottom wall of the supporting cylinder, the bottom wall of the bottom plate abuts against the bottom wall of the inner cavity of the extraction barrel, the bottom wall of the material barrel abuts against the top wall of the supporting plate, and a distance L is left between the air outlet of the air inlet pipe and the mesh plate.

[0008] Furthermore, the distance L between the air outlet of the air inlet pipe and the mesh plate is greater than or equal to 50 centimeters.

[0009] Furthermore, a mesh cover is provided directly above the air outlet of the air inlet pipe.

[0010] Furthermore, the mesh cover is fixedly provided with a supporting leg extending vertically downward, and the supporting leg is fixedly connected to the bottom plate by a second bolt.

[0011] Furthermore, the top wall of the mesh cover is rotatably connected to an axial flow fan, and the rotation axis of the axial flow fan coincides with the axis of the air outlet of the air inlet pipe.

[0012] Furthermore, the top wall of the support plate is provided with a plurality of downwardly recessed plug-in grooves, and the bottom wall of the mesh plate is fixedly provided with a plurality of snap-fit ​​blocks aligned with the plug-in grooves. When the material barrel is installed, the snap-fit ​​blocks are inserted into the plug-in grooves, and the side walls of the snap-fit ​​blocks abut against the inner walls of the plug-in grooves.

[0013] Furthermore, a second blocking cover is fixedly installed on the top of the material barrel, and the second blocking cover is provided with an air outlet for gas to flow out, and the second blocking cover is also fixedly provided with a lifting ear.

[0014] Furthermore, a first sealing cover is installed on the top of the extraction barrel to seal the inner cavity of the extraction barrel, and also includes a buckling device to lock the first sealing cover and the extraction barrel.

[0015] Furthermore, the top wall of the extraction barrel is provided with a plug-in column extending vertically upward, and the bottom wall of the first sealing cover is provided with a plug-in hole. When the first sealing cover is installed, the plug-in column is plugged into the plug-in hole, the side wall of the plug-in column abuts against the inner wall of the plug-in hole, and the bottom wall of the first sealing cover abuts against the top wall of the extraction barrel.

[0016] Furthermore, the snap-fitting device includes a first snap-fitting cover and a second snap-fitting cover which are radially slidably connected along the extraction barrel, the first snap-fitting cover and the second snap-fitting cover are both provided with a snap-fitting groove, and the peripheral wall of the first blocking cover is provided with a blocking rib, and when the extraction barrel and the first blocking cover are locked, the snap-fitting groove is snapped onto the blocking rib.

[0017] Compared with the prior art, the beneficial effect of the utility model is that the utility model utilizes a supporting device to leave a distance between the air outlet of the air inlet pipe and the mesh plate on the material barrel, so as to diffuse the carbon dioxide flowing out of the air inlet pipe, thereby preventing the carbon dioxide from being too concentrated and impacting the same point of the material. Compared with the traditional solution of directly abutting the mesh plate on the material barrel with the bottom wall of the extraction barrel, the risk of the material being perforated by supercritical carbon dioxide gas is reduced, and the extraction effect of the material is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the prior art;

[0019] Figure 2It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] Figure 4 It is a partial expansion schematic diagram of the utility model;

[0022] Figure 5 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 6 This is a schematic diagram of the expansion of the material barrel of the utility model;

[0024] Figure 7 It is a structural schematic diagram of a material barrel;

[0025] Figure 8 Schematic diagram of the expansion of the support device.

[0026] In the figure: 1. extraction barrel; 11. air inlet pipe; 12. valve; 13. snap-fit ​​device; 131. first snap-fit ​​cover; 132. second snap-fit ​​cover; 133. snap-fit ​​groove; 14. first blocking cover; 141. blocking rib; 142. plug-in hole; 15. plug-in column; 2. material barrel; 21. mesh plate; 22. snap-fit ​​block; 23. first bolt; 24. second blocking cover; 241. air outlet; 242. lifting ear; 3. supporting device; 31. supporting cylinder; 32. supporting plate; 321. plug-in groove; 33. bottom plate; 34. reinforcing rib; 4. mesh cover; 41. supporting leg; 42. second bolt; 5. axial fan. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The present embodiment provides a material extraction kettle, which utilizes supercritical carbon dioxide to extract the material, thereby solving the problem of concentrated carbon dioxide gas outgassing, which causes perforations in the material.

[0029] like Figure 2 and Figure 3 As shown, it includes an extraction barrel 1, on the bottom wall of which is installed an air inlet pipe 11 connected to the inner cavity of the extraction barrel 1. The air inlet pipe 11 is used to transport supercritical carbon dioxide gas into the inner cavity of the extraction barrel 1, thereby extracting the material placed inside the extraction barrel 1.

[0030] The carbon dioxide gas pressure used for different materials is different. In order to be applicable to the extraction of different types of materials, in this embodiment, Figure 2 As shown, a valve 12 is installed on the air inlet pipe 11, and the valve 12 can be used to control the air intake amount of the air inlet pipe 11, so as to facilitate indirect control of the pressure in the extraction barrel 1; the use of the valve 12 can also control the injection speed of the gas in the air inlet pipe 11, and avoid the problem of high-speed flowing gas forming perforations on the material as much as possible.

[0031] In order to ensure a stable gas pressure in the extraction barrel 1, in this embodiment, Figure 3 and Figure 4 As shown, a first blocking cover 14 is installed on the top of the extraction barrel 1 to achieve the sealing of the inner cavity of the extraction barrel 1, and a plug-in column 15 extending vertically upward is fixedly provided on the top wall of the extraction barrel 1, and a plug-in hole 142 corresponding to the plug-in column 15 is provided on the bottom wall of the first blocking cover 14. When the first blocking cover 14 is installed, the plug-in column 15 is plugged into the plug-in hole 142, and the bottom wall of the first blocking cover 14 abuts against the top wall of the extraction barrel 1.

[0032] It is worth noting that two plug-in posts 15 are provided, and the cooperation between the plug-in posts 15 and the plug-in holes 142 can improve the accuracy of the installation of the first blocking cover 14 and prevent the first blocking cover 14 from shaking along the radial direction of the extraction barrel 1.

[0033] After the first blocking cover 14 is installed on the top of the extraction barrel 1, in order to limit the first blocking cover 14 from moving along the axial direction of the extraction barrel 1, in this embodiment, as shown in FIG. Figure 3 and Figure 4 As shown, it also includes a snap-fit ​​device 13 for positioning the first blocking cover 14. Specifically, the snap-fit ​​device 13 includes a first snap-fit ​​cover 131 and a second snap-fit ​​cover 132, wherein the first snap-fit ​​cover 131 and the second snap-fit ​​cover 132 move along the radial direction of the extraction barrel 1, so that the first blocking cover 14 and the extraction barrel 1 are switched between an unlocked state and a locked state.

[0034] The top wall of the first blocking cover 14 is provided with a blocking rib 141 which is recessed downward and communicated with the peripheral wall. At this time, the longitudinal section of the first blocking cover 14 is an inverted "T" shape. The first buckling cover 131 and the second buckling cover 132 are both provided with a buckling groove 133. When the first blocking cover 14 and the extraction barrel 1 are in a locked state, the buckling groove 133 is buckled on the blocking rib 141. At this time, the top wall of the buckling groove 133 abuts against the bottom wall of the blocking rib 141 to limit the first blocking cover 14 from moving upward along the axial direction of the extraction barrel 1 to prevent the first blocking cover 14 from opening; in the unlocked state, the first buckling cover 131 and the second buckling cover 132 move in opposite directions along the radial direction of the extraction barrel 1 to release the buckling of the buckling groove 133 to the blocking rib 141, so that the first blocking cover 14 can be detached from the extraction barrel 1.

[0035] In order to facilitate the extraction of materials, in this embodiment, Figure 6 and Figure 7 As shown, when the material is extracted, the material is placed in a material barrel 2. In order to allow supercritical carbon dioxide gas to enter the material barrel 2, a mesh plate 21 is installed on the bottom wall of the material barrel 2. The mesh holes on the mesh plate 21 are used to connect the inner cavity of the extraction barrel 1 with the inner cavity of the material barrel 2, and carbon dioxide is delivered into the material barrel 2, thereby realizing the extraction of the material.

[0036] In order to enable the supercritical carbon dioxide gas to penetrate the material barrel 2 and extract the material, in this embodiment, Figure 6 As shown, a second blocking cover 24 is installed on the top of the material barrel 2, wherein the second blocking cover 24 is provided with a plurality of air outlet holes 241.

[0037] Through the above arrangement, the supercritical carbon dioxide gas enters the inner cavity of the extraction barrel 1 from the air inlet pipe 11, then passes through the mesh plate 21 and flows to the inner cavity of the material barrel 2, and finally flows out from the air outlet 241 of the second sealing cover 24. The supercritical carbon dioxide gas flowing through the inner cavity of the material barrel 2 extracts the material.

[0038] Since the material barrel 2 for placing the material is too heavy, in order to facilitate placing the material barrel 2 into the inner cavity of the extraction barrel 1, in this embodiment, Figure 6 and Figure 7 As shown, a lifting ear 242 is also installed on the second blocking cover 24 .

[0039] The installation process of material barrel 2 is as follows:

[0040] In the first step, the first buckle cover 131 and the second buckle cover 132 move outward along the radial direction of the extraction barrel 1 to release the lock between the first blocking cover 14 and the extraction barrel 1;

[0041] The second step is to use the electric hoist hook to hang on the ear 242 of the material barrel 2, lift the material barrel 2, and finally place the material barrel 2 in the inner cavity of the extraction barrel 1;

[0042] In the third step, the first blocking cover 14 is covered on the extraction barrel 1 and the plug-in column 15 is plugged into the plug-in hole 142 , and then the first buckle cover 131 and the second buckle cover 132 are moved and the first blocking cover 14 is locked on the extraction barrel 1 .

[0043] After the above three steps, the installation of the material barrel 2 is completed.

[0044] Since the carbon dioxide flow rate at the air outlet of the air inlet pipe 11 is relatively fast, the carbon dioxide gas is relatively concentrated when flowing out, and it is easy to impact the material in the material barrel 2 in a concentrated manner, causing perforation of the material. In order to solve this problem, it is necessary to disperse the gas at the air outlet of the air inlet pipe 11 to reduce the impact force of the gas on the material.

[0045] Therefore, in this embodiment, if Figure 3 , Figure 5 and Figure 6 As shown, a supporting device 3 is provided inside the extraction barrel 1, wherein the supporting device 3 is placed on the bottom wall of the extraction barrel 1. When the material barrel 2 is placed, the bottom wall of the material barrel 2 abuts against the top wall of the supporting device 3, so that a distance L is left between the air outlet of the air inlet pipe 11 and the mesh plate 21 to disperse the carbon dioxide gas and prevent the supercritical carbon dioxide gas from gathering and impacting on the material.

[0046] In this embodiment, the distance L between the air outlet of the air inlet pipe 11 and the mesh plate 21 should be greater than or equal to 50 cm. The greater the distance, the better the dispersion effect of the carbon dioxide gas. Here, the distance L is 70 cm.

[0047] like Figure 8 As shown, the support device 3 includes a support cylinder 31, a support plate 32, a bottom plate 33 and a plurality of reinforcing ribs 34, wherein the support plate 32 is annular and fixedly mounted on the top wall of the support cylinder 31, the bottom plate 33 is fixedly mounted on the bottom wall of the support cylinder 31, a plurality of reinforcing ribs 34 are evenly distributed along the circumference of the support cylinder 31, and the top end of the reinforcing rib 34 is fixedly connected to the support plate 32, and the bottom end of the reinforcing rib 34 is fixedly connected to the bottom plate 33; the material barrel 2 is placed on the support plate 32.

[0048] Through the above-mentioned arrangement, the support cylinder 31 is used to leave a distance between the outlet of the air inlet pipe 11 and the mesh plate 21, so that the outflowing carbon dioxide gas tends to diffuse outward, increasing the coverage range of carbon dioxide, and then the carbon dioxide passes through the mesh holes of the mesh plate 21 to further disperse the carbon dioxide gas, reduce the impact of high-speed carbon dioxide gas on the material, and reduce the risk of perforation of the material.

[0049] The use of the reinforcing ribs 34 improves the bearing strength of the support cylinder 31 and prevents the support cylinder 31 from being deformed after the material barrel 2 is placed on the support plate 32 .

[0050] In order to enhance the stability of placing the material barrel 2 on the support plate 32, in this embodiment, as shown in FIG. Figure 6 , Figure 7 and Figure 8 As shown, the support plate 32 is provided with a plurality of downwardly recessed plug-in grooves 321, and the bottom wall of the mesh plate 21 is fixedly connected with a snap-fit ​​block 22 by a first bolt 23, wherein the number of the snap-fit ​​blocks 22 is consistent with the number of the plug-in grooves 321, and when the material barrel 2 is placed, the snap-fit ​​blocks 22 are plugged into the corresponding plug-in grooves 321, and the side walls of the snap-fit ​​blocks 22 abut against the side walls of the plug-in grooves 321 to prevent the material barrel 2 from shaking.

[0051] In order to further improve the dispersion effect of carbon dioxide at the air outlet of the air inlet pipe 11, in this embodiment, Figure 5 and Figure 8 As shown, a mesh cover 4 is provided above the outlet of the air inlet pipe 11. Specifically, the mesh cover 4 is cone-shaped, and the carbon dioxide gas is blocked by the mesh cover 4, reducing the flow rate of the carbon dioxide gas. Then the carbon dioxide gas flows upward from the mesh holes of the mesh cover 4, thereby improving the dispersion effect of the carbon dioxide gas.

[0052] In order to realize the installation of the mesh cover 4, in this embodiment, as shown in FIG. Figure 5 and Figure 8 As shown, a plurality of support legs 41 extending vertically downward are fixedly provided on the bottom wall of the mesh cover 4. When the mesh cover 4 is installed, the bottom wall of the support leg 41 abuts against the top wall of the bottom plate 33, and then a second bolt 42 is used to pass through the bottom plate 33 and is threadedly connected to the support leg 41, thereby fixing the mesh cover 4.

[0053] In order to further enhance the dispersion effect of carbon dioxide gas, in this embodiment, Figure 5 and Figure 8 As shown, an axial flow fan 5 is rotatably mounted on the top wall of the mesh cover 4 , wherein the rotation axis of the axial flow fan 5 coincides with the axis of the air outlet of the air inlet pipe 11 .

[0054] Through the above arrangement, when the carbon dioxide gas continues to flow upward through the mesh cover 4, the airflow will drive the axial flow fan 5 to rotate, thereby dispersing the carbon dioxide gas again, thereby solving the risk of carbon dioxide gas accumulating and impacting on the material and causing material perforation.

[0055] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A material extraction kettle, comprising an extraction barrel (1), the bottom wall of the extraction barrel (1) is provided with an air inlet pipe (11) communicating with the inner cavity of the extraction barrel (1), a material barrel (2) is also placed in the inner cavity of the extraction barrel (1), and a mesh plate (21) is installed on the bottom wall of the material barrel (2), characterized in that: The invention also comprises a support device (3) installed in the inner cavity of the extraction barrel (1), the support device (3) comprising a support cylinder (31), a support plate (32) and a bottom plate (33), the support plate (32) being annular and fixedly installed on the top wall of the support cylinder (31), the bottom plate (33) being fixedly installed on the bottom wall of the support cylinder (31), the bottom wall of the bottom plate (33) being in contact with the bottom wall of the inner cavity of the extraction barrel (1), the bottom wall of the material barrel (2) being in contact with the top wall of the support plate (32), and a distance L being left between the air outlet of the air inlet pipe (11) and the mesh plate (21).

2. A material extraction kettle according to claim 1, characterized in that: The distance L between the air outlet of the air inlet pipe (11) and the mesh plate (21) is greater than or equal to 50 centimeters.

3. A material extraction kettle according to claim 1, characterized in that: A mesh cover (4) is provided directly above the air outlet of the air inlet pipe (11).

4. A material extraction kettle according to claim 3, characterized in that: A support leg (41) extending vertically downward is fixedly provided on the mesh cover (4), and the support leg (41) is fixedly connected to the bottom plate (33) via a second bolt (42).

5. A material extraction kettle according to claim 3, characterized in that: The top wall of the mesh cover (4) is rotatably connected to an axial flow fan (5), and the rotation axis of the axial flow fan (5) coincides with the axis of the air outlet of the air inlet pipe (11).

6. A material extraction kettle according to claim 1, characterized in that: The top wall of the support plate (32) is provided with a plurality of downwardly recessed plug-in grooves (321), and the bottom wall of the mesh plate (21) is fixedly provided with a plurality of snap-fit ​​blocks (22) aligned with the plug-in grooves (321); when the material barrel (2) is installed, the snap-fit ​​blocks (22) are inserted into the plug-in grooves (321), and the side walls of the snap-fit ​​blocks (22) abut against the inner walls of the plug-in grooves (321).

7. A material extraction kettle according to claim 6, characterized in that: A second blocking cover (24) is fixedly mounted on the top of the material barrel (2), and the second blocking cover (24) is provided with an outlet hole (241) for gas to flow out, and a lifting ear (242) is also fixedly mounted on the second blocking cover (24).

8. A material extraction kettle according to claim 1, characterized in that: A first sealing cover (14) is installed on the top of the extraction barrel (1) to seal the inner cavity of the extraction barrel (1), and also includes a snap-fit ​​device (13) to lock the first sealing cover (14) and the extraction barrel (1).

9. A material extraction kettle according to claim 8, characterized in that: The top wall of the extraction barrel (1) is provided with a plug-in column (15) extending vertically upward, and the bottom wall of the first blocking cover (14) is provided with a plug-in hole (142). When the first blocking cover (14) is installed, the plug-in column (15) is plugged into the plug-in hole (142), the side wall of the plug-in column (15) abuts against the inner wall of the plug-in hole (142), and the bottom wall of the first blocking cover (14) abuts against the top wall of the extraction barrel (1).

10. A material extraction kettle according to claim 8 or 9, characterized in that: The buckling device (13) comprises a first buckling cover (131) and a second buckling cover (132) which are radially slidably connected to the extraction barrel (1); the first buckling cover (131) and the second buckling cover (132) are both provided with a buckling groove (133); the peripheral wall of the first blocking cover (14) is provided with a blocking rib (141); when the extraction barrel (1) and the first blocking cover (14) are locked, the buckling groove (133) is buckled on the blocking rib (141).

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