Discharging device of extraction kettle

Abstract

The utility model discloses an extraction kettle discharging device which comprises a cylinder body, an air inlet is formed in the bottom of the cylinder body, a second mesh plate is arranged at the position of the air inlet of the cylinder body, a sealing cover arranged in the axial direction of the cylinder body is arranged on the side wall of an inner cavity of the cylinder body, and a sealing cavity with a downward opening is defined by the sealing cover and the inner wall of the cylinder body. A sliding groove communicated with the sealing cavity is formed in the side wall of the barrel, a drawing rod is slidably connected into the sealing cavity, one end of the drawing rod is fixedly connected with the second mesh plate, a positioning mechanism switched between a first state and a second state is arranged at the other end of the drawing rod, and in the first state, the second mesh plate blocks the air inlet, and in the second state, the second mesh plate blocks the air outlet. The second mesh plate drives the pull rod to move downwards under the action of self gravity, at the moment, the second mesh plate opens the air inlet, the materials in the inner cavity of the barrel fall downwards from the gap between the second mesh plate and the air inlet, and rapid discharging of the materials is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction kettles, in particular to an extraction kettle unloading device. 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 to achieve the purpose of product separation and purification.

[0003] Critical carbon dioxide is generally used to separate or purify materials in an extraction kettle, which includes an extraction tank and a material tank. Existing material tanks such as Figure 1 As shown, it includes a barrel 1 and a feed port 11 and an air inlet 12 located at both ends of the barrel 1, wherein the feed port 11 and the air inlet 12 are blocked by a first mesh plate 2 and a second mesh plate 3 respectively, and the second mesh plate 3 is fixedly connected to the air inlet 12 by bolts; during the material extraction process, the material barrel is placed inside the extraction barrel, and then high-pressure supercritical carbon dioxide gas is filled from the bottom of the extraction barrel, and the gas enters the inner cavity of the barrel 1 through the air inlet 12 and flows out from the first mesh plate 2 at the position of the feed port 11, so as to realize the extraction of the material in the inner cavity of the barrel 1; after the extraction is completed, in order to be able to take out the material in the material barrel, it is often necessary to use an electric hoist to lift the material barrel out of the extraction barrel, and then place the material barrel on a turning device, turn the material barrel so that the feed port 11 opens downward, and then remove the first mesh plate 2, and use manual labor to pull the material in the barrel 1 outward to realize the release of the material in the barrel 1. This material release method is relatively cumbersome, and the material release efficiency is low, and it requires a lot of manpower.

[0004] Therefore, how to design a discharge device for quickly releasing materials in a material barrel 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 an extraction kettle unloading device to solve the problem of low material release efficiency in the material barrel.

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

[0007] A discharging device for an extraction kettle comprises a cylinder, an air inlet is arranged at the bottom of the cylinder, a second mesh plate is arranged at the position of the air inlet of the cylinder, a sealing cover is arranged along the axial direction of the cylinder on the side wall of the inner cavity of the cylinder, the sealing cover and the inner wall of the cylinder form a sealing cavity opening downward, the side wall of the cylinder is provided with a slide groove connected to the sealing cavity, a pull-out rod is slidably connected in the sealing cavity, one end of the pull-out rod is fixedly connected to the second mesh plate, and the other end of the pull-out rod is provided with a positioning mechanism that switches between a first state and a second state, in the first state, the positioning mechanism fixes the pull-out rod to the cylinder, and the second mesh plate blocks the air inlet, and in the second state, the positioning mechanism releases the fixation of the pull-out rod to the cylinder, and the second mesh plate opens the air inlet.

[0008] Furthermore, four groups of positioning mechanisms and sliding grooves are provided and are evenly distributed along the circumference of the cylinder.

[0009] Furthermore, a sealing gasket is fixedly provided on the top wall of the second mesh plate. When the second mesh plate is installed, the sealing gasket is inserted into the sealing cavity, and the side wall of the sealing gasket abuts against the side wall of the sealing cavity.

[0010] Furthermore, the positioning mechanism includes a positioning block, a positioning stud and a nut. The positioning block is fixedly mounted on the pull rod. The side wall of the positioning block is slidingly connected to the side wall of the slide groove. A through hole is provided on the positioning block. The positioning stud is fixedly mounted on the peripheral wall of the cylinder. In the first state, the positioning stud passes through the through hole of the positioning block, and the nut is threadedly connected to the positioning stud.

[0011] Furthermore, a sealing ring groove is provided on the bottom wall of the cylinder, and an inserting rib which is inserted into the sealing ring groove is provided on the second mesh plate, and the cross section of the inserting rib is in a circular ring shape.

[0012] Furthermore, the longitudinal section of the sealing ring groove is an isosceles trapezoid.

[0013] Furthermore, a feed port is provided at the top of the cylinder, a first mesh plate is provided at the feed port of the cylinder, and a lifting lug is provided on the first mesh plate.

[0014] Furthermore, the first mesh plate and the second mesh plate are both provided with a plurality of air holes.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model realizes the switching of the two states of the pull-out rod through the positioning mechanism. When the material is extracted, the pull-out rod is fixed on the cylinder body, and the second mesh plate blocks the air inlet to prevent the material in the inner cavity of the cylinder from falling downward. When the material is extracted, the material barrel is lifted, and the positioning mechanism releases the fixation of the pull-out rod and the cylinder body. The second mesh plate drives the pull-out rod to move downward under the action of its own gravity. At this time, the second mesh plate opens the air inlet, and the material in the inner cavity of the cylinder falls downward from the gap between the second mesh plate and the air inlet, thereby realizing rapid unloading of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the prior art;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 It is a partial cross-sectional view of the utility model;

[0019] Figure 4 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0020] Figure 5 It is a cross-sectional view of the utility model;

[0021] Figure 6 is a schematic diagram of a first state of the second mesh plate;

[0022] Figure 7 This is a schematic diagram of the second mesh plate in the second state.

[0023] In the figure: 1. cylinder; 11. feed port; 12. air inlet; 13. slide groove; 14. sealing cover; 141. sealing chamber; 15. sealing ring groove; 16. positioning stud; 17. nut; 2. first mesh plate; 21. lifting ear; 3. second mesh plate; 31. air hole; 32. plug-in rib; 33. sealing gasket; 4. pull rod; 41. positioning block. DETAILED DESCRIPTION

[0024] 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.

[0025] This embodiment provides an extraction kettle unloading device, which is mainly used to improve the unloading efficiency of materials in a material barrel.

[0026] like Figure 2As shown, the material barrel placed in the extraction barrel includes a barrel 1, and a feed port 11 and an air inlet 12 are respectively provided at both ends of the barrel 1. Specifically, the barrel 1 is cylindrical, the feed port 11 is located at the top of the barrel 1, and the air inlet 12 is located at the bottom of the barrel 1. The feed port 11 and the air inlet 12 of the barrel 1 are respectively provided with a first mesh plate 2 and a second mesh plate 3, wherein the air inlet 12 of the barrel 1 is blocked by the second mesh plate 3, and the material is placed from the feed port 11 into the inner cavity of the barrel 1. At this time, the material is blocked by the second mesh plate 3 to prevent the material from continuing to fall downward; when the material is placed, the feed port 11 is blocked by the first mesh plate 2, and at this time, the first mesh plate 2 and the barrel 1 are fixed by bolts, and then the material barrel is placed inside the extraction barrel.

[0027] Through the above arrangement, high-pressure supercritical carbon dioxide gas is filled into the inner cavity of the extraction barrel from the bottom of the extraction barrel. At this time, the gas enters the inner cavity of the cylinder 1 through the second mesh plate 3, and then the gas flows out of the cylinder 1 from the first mesh plate 2. In this process, the supercritical carbon dioxide completes the extraction of the material.

[0028] In order to facilitate the lifting of the material barrel, in this embodiment, Figure 2 and Figure 3 As shown, a lifting ear 21 is rotatably connected to the first mesh plate 2. When the material barrel needs to be lifted, the hook of the electric hoist can be hooked on the lifting ear 21, and then the material barrel can be lifted out of the extraction barrel by the electric hoist. Among them, the existing extraction barrel can refer to the "A Material Extraction Kettle" with application number: 202420655754X.

[0029] Conventional material barrels such as Figure 1 As shown, the second mesh plate 3 is directly fixed to the bottom wall of the cylinder 1 by bolts, and a plurality of air holes 31 are provided on the second mesh plate 3. When the second mesh plate 3 is installed, the carbon dioxide gas in the extraction barrel enters the inner cavity of the cylinder 1 through the air holes 31. When the material extraction is completed, the material barrel is lifted out of the extraction barrel by an electric hoist, and the material barrel is placed in a turning device, and the material barrel is turned over so that the feed port 11 is tilted downward, and then the first mesh plate 2 is opened, and the material is manually pulled out of the material barrel. In this process, the depth of the material barrel is deeper and the tilt angle of the material barrel is smaller. This method has many inconveniences when unloading the material.

[0030] Therefore, in this embodiment, if Figure 3 , Figure 4 and Figure 7As shown, the inner wall of the cylinder 1 is fixedly provided with a sealing cover 14 arranged along the axial direction of the cylinder 1, and the sealing cover 14 and the inner wall of the cylinder 1 form a sealing cavity 141 with an opening downward, and the side wall of the cylinder 1 is provided with a slide groove 13 connected to the sealing cavity 141, and a pull rod 4 is slidably connected in the sealing cavity 141, one end of the pull rod 4 is fixedly connected to the second mesh plate 3, and the other end of the pull rod 4 is provided with a positioning mechanism fixed to the cylinder 1; during the material extraction process, as Figure 6 As shown, the positioning mechanism fixes the pull rod 4 to the cylinder 1, so that the second mesh plate 3 completes the blocking of the air inlet 12. When the material is unloaded, Figure 7 As shown, the positioning mechanism releases the fixation of the pull-out rod 4 and the cylinder 1. At this time, the second mesh plate 3 drives the pull-out rod 4 to slide downward under the action of gravity, and the second mesh plate 3 opens the air inlet 12. At this time, the material in the inner cavity of the cylinder 1 can be discharged outward from the gap between the air inlet 12 and the second mesh plate 3, thereby improving the unloading efficiency of the material.

[0031] When the material is extracted, Figure 4 and Figure 5 As shown, at this time, the carbon dioxide gas will enter the inner cavity of the cylinder 1 from the air hole 31 of the second mesh plate 3. Since the chute 13 is connected to the sealing cavity 141, and the sealing cover 14 is installed on the inner wall of the cylinder 1, in order to prevent the carbon dioxide gas from leaking out through the sealing cavity 141 and the chute 13, in this embodiment, as shown in FIG. Figure 4 As shown, a sealing gasket 33 is fixedly provided on the second mesh plate 3. When the second mesh plate 3 blocks the air inlet 12, the sealing gasket 33 is inserted into the sealing cavity 141, and the side wall of the sealing gasket 33 abuts against the side wall of the sealing cavity 141, thereby preventing the gas in the inner cavity of the cylinder 1 from entering the sealing cavity 141, reducing the risk of gas leakage from the cylinder 1 from the slide groove 13.

[0032] In order to enhance the stability of the installation of the second mesh plate 3, in this embodiment, Figure 4 and Figure 7 As shown, a sealing ring groove 15 is provided on the bottom wall of the cylinder 1 , and an inserting rib 32 which is inserted into the sealing ring groove 15 is fixedly provided on the second mesh plate 3 . Specifically, the inserting rib 32 is adapted to the sealing ring groove 15 .

[0033] The longitudinal section of the sealing ring groove 15 is an isosceles trapezoid. When the second mesh plate 3 is installed, the plug-in rib 32 is plugged into the sealing ring groove 15, and the side wall of the plug-in rib 32 abuts against the inner wall of the sealing ring groove 15, which plays a sealing role and can prevent the plug-in rib 32 from shaking in the sealing ring groove 15, thereby improving the stability of the installation of the second mesh plate 3.

[0034] In order to fix the pull rod 4, in this embodiment, the positioning mechanism includes a positioning block 41, a positioning stud 16 and a nut 17, wherein the positioning block 41 is fixedly mounted on the pull rod 4, the side wall of the positioning block 41 is slidably connected to the side wall of the slide groove 13, the positioning stud 16 is fixedly mounted on the peripheral wall of the cylinder 1, and a through hole is provided on the positioning block 41. When the second mesh plate 3 moves to the upper limit position, as shown in FIG. Figure 6 As shown, at this time, the positioning stud 16 passes through the through hole on the positioning block 41, and then the nut 17 is installed on the positioning stud 16, thereby fixing the position of the positioning block 41, thereby realizing the installation of the second mesh plate 3.

[0035] In order to further improve the installation stability of the second mesh plate 3, in this embodiment, Figure 5 As shown, the slide grooves 13 and the positioning mechanisms are provided in four groups and are evenly distributed along the circumference of the cylinder body 1 .

[0036] 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. An extraction kettle unloading device, comprising a cylinder (1), wherein the bottom of the cylinder (1) is provided with an air inlet (12), characterized in that: A second mesh plate (3) is provided at the position of the air inlet (12) of the cylinder (1), a sealing cover (14) is provided on the side wall of the inner cavity of the cylinder (1) and is arranged along the axial direction of the cylinder (1), the sealing cover (14) and the inner wall of the cylinder (1) enclose a sealing cavity (141) opening downward, the side wall of the cylinder (1) is provided with a slide groove (13) connected to the sealing cavity (141), a pull-out rod (4) is slidably connected in the sealing cavity (141), one end of the pull-out rod (4) is fixedly connected to the second mesh plate (3), and the other end of the pull-out rod (4) is provided with a positioning mechanism that switches between a first state and a second state, in the first state, the positioning mechanism fixes the pull-out rod (4) to the cylinder (1), and the second mesh plate (3) blocks the air inlet (12), in the second state, the positioning mechanism releases the fixation of the pull-out rod (4) to the cylinder (1), and the second mesh plate (3) opens the air inlet (12).

2. The extraction kettle discharge device according to claim 1, characterized in that: Four groups of positioning mechanisms and sliding grooves (13) are provided and are evenly distributed along the circumference of the cylinder (1).

3. An extraction kettle discharge device according to claim 1 or 2, characterized in that: A sealing gasket (33) is fixedly provided on the top wall of the second mesh plate (3); when the second mesh plate (3) is installed, the sealing gasket (33) is inserted into the sealing cavity (141), and the side wall of the sealing gasket (33) abuts against the side wall of the sealing cavity (141).

4. The extraction kettle discharge device according to claim 2, characterized in that: The positioning mechanism comprises a positioning block (41), a positioning stud (16) and a nut (17); the positioning block (41) is fixedly mounted on the pull rod (4); the side wall of the positioning block (41) is slidably connected to the side wall of the slide groove (13); a through hole is provided on the positioning block (41); the positioning stud (16) is fixedly mounted on the peripheral wall of the cylinder (1); in a first state, the positioning stud (16) passes through the through hole of the positioning block (41); and the nut (17) is threadedly connected to the positioning stud (16).

5. The extraction kettle discharge device according to claim 2, characterized in that: The bottom wall of the cylinder (1) is provided with a sealing ring groove (15), and the second mesh plate (3) is provided with an inserting rib (32) inserted into the sealing ring groove (15), and the cross section of the inserting rib (32) is in the shape of a circular ring.

6. The extraction kettle discharge device according to claim 5, characterized in that: The longitudinal section of the sealing ring groove (15) is in the shape of an isosceles trapezoid.

7. The extraction kettle discharge device according to claim 1, characterized in that: A feed port (11) is provided at the top of the cylinder (1), a first mesh plate (2) is provided at the feed port (11) of the cylinder (1), and a lifting lug (21) is provided on the first mesh plate (2).

8. The extraction kettle discharge device according to claim 7, characterized in that: A plurality of air holes (31) are provided on the first mesh plate (2) and the second mesh plate (3).

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