Crystallization reaction kettle for stevioside production

Abstract

The utility model provides a crystallization reaction kettle for stevioside production, belongs to the technical field of reaction kettles, and aims to solve the problems that in the currently used crystallization reaction kettle for stevioside production, if the quantity of materials contained in the reaction kettle is relatively small, a stirring paddle positioned at the upper end of a stirring shaft is difficult to touch the materials, and the reaction kettle is inconvenient to use. According to the stirring device, a feeding port is fixedly connected to the upper end face of a tank body, and a stirring shaft is arranged on the upper end face of the tank body; the fixed support is fixedly connected to the upper end surface of the tank body; the driving motor is fixedly mounted on the upper end surface of the fixed support; the stirring rotating shaft is fixedly connected to the lower end of a driving motor rotating shaft; the fixed stirring paddle is fixedly connected to the outer side of the lower end of the stirring rotating shaft; the self-adjusting mechanism is arranged at the upper end of the stirring rotating shaft; the scraping mechanism is arranged on the inner side of the upper end of the tank body; through the arrangement of the fixed paddle, automatic adjustment of the fixed paddle is realized, the stirring effect on materials is enhanced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of reaction vessel technology, and more specifically, it relates to a crystallization reaction vessel for stevia production. Background Technology

[0002] Stevia is a natural sweetener that is extracted from the leaves of the stevia plant. During the production process, a crystallization reactor is usually used to promote the crystallization of stevia from the material.

[0003] According to application number CN201720756072.8, a recrystallization reactor is disclosed, which has a jacketed tank body, an agitator connected to a drive motor, a rotary spray head, a thermometer, and a solvent addition pipe at the upper end of the tank body, a discharge valve at the bottom of the tank body, and a dropper installed at the top of the tank body, connected to the solvent addition pipe. The dropper is a ring-shaped pipe formed by several sanitary connecting pipes and elbows, with drip holes on the inner and outer sides and bottom of the ring-shaped pipe. The diameter of the drip holes on the inner and outer sides of the ring-shaped pipe is 4mm, and the diameter of the drip hole at the bottom of the ring-shaped pipe is 2mm. Sanitary quick-connect clamps are provided at the connection points of the connecting pipes and elbows. This utility model has a simple structure, is easy to use, produces good crystal form of materials, is uniform and free from agglomeration, reduces the total reaction time required for recrystallization, requires no supervision throughout the process, saves manpower, improves the efficiency of recrystallization equipment, and greatly increases the production capacity of the equipment.

[0004] Based on the above, in the crystallization reactors currently used for stevia production, the agitator is generally fixed on the agitator shaft. However, in actual production operations, if the amount of material contained in the reactor is relatively small, the agitator located at the top of the agitator shaft will have difficulty touching the material, and thus cannot effectively agitate the material, which will have an adverse effect on the overall efficiency of stevia production to a certain extent. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a crystallization reactor for stevia production. In current stevia crystallization reactors, the stirring paddle is typically fixedly mounted on the stirring shaft. However, during actual production, if the amount of material in the reactor is relatively small, the stirring paddle located at the top of the stirring shaft may have difficulty reaching the material, thus hindering effective stirring and negatively impacting the overall efficiency of stevia production.

[0006] The purpose and effect of this utility model, a crystallization reactor for stevia production, are achieved by the following specific technical means:

[0007] A crystallization reactor for stevia production includes a tank body, a feed inlet, a fixed support, a drive motor, a stirring shaft, a fixed stirring paddle, a self-adjusting mechanism, and a scraping mechanism. The feed inlet is fixedly connected to the upper end face of the tank body. The fixed support is fixedly connected to the upper end face of the tank body. The drive motor is fixedly mounted on the upper end face of the fixed support. The stirring shaft is fixedly connected to the lower end of the drive motor shaft. The fixed stirring paddle is fixedly connected to the outer side of the lower end of the stirring shaft. The self-adjusting mechanism is located at the upper end of the stirring shaft. The scraping mechanism is located on the inner side of the upper end of the tank body.

[0008] Furthermore, the self-adjusting mechanism includes: a sliding mandrel and fixed blades; the sliding mandrel is slidably connected to the inner side of the stirring shaft; multiple fixed blades are provided, and multiple fixed blades are fixedly connected to the outer side of the sliding mandrel.

[0009] Furthermore, the self-adjusting mechanism also includes a buoyancy component; the buoyancy component is fixedly connected to the upper end of the sliding spindle, and the buoyancy component is slidably connected to the outside of the stirring shaft.

[0010] Furthermore, the self-adjusting mechanism also includes: a limiting groove, a limiting slider, and a tension spring; the limiting groove is provided in multiple sets, and all sets of limiting grooves are opened on the inner side of the stirring shaft; the limiting slider is provided in multiple sets, and all sets of limiting sliders are slidably connected to the inner side of the sliding mandrel; the tension spring is provided in multiple sets, one end of each set of tension springs is fixedly connected to the outer side of the multiple limiting sliders, and the other end of each set of tension springs is fixedly connected to the inner side of the sliding mandrel.

[0011] Furthermore, the scraping mechanism includes: a fixed gear, a connecting gear, and a reduction gear; the fixed gear is fixedly connected to the outer side of the upper end of the stirring shaft; the connecting gear is rotatably connected to the inner side of the upper end of the tank, and the connecting gear meshes with the fixed gear; the reduction gear is fixedly connected to the lower end face of the connecting gear.

[0012] Furthermore, the scraping mechanism also includes: a rotating frame, scraping rods, and scraping gears; the rotating frame is rotatably connected to the inner side of the upper end of the tank; multiple scraping rods are provided, and multiple scraping rods are fixedly connected to the lower end face of the rotating frame; the scraping gears are fixedly connected to the upper end face of the rotating frame, and the scraping gears mesh with the reduction gears.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention achieves automatic adjustment of the fixed paddle through a self-adjusting mechanism. When material is injected into the tank, the buoyancy component slides upward as the liquid level rises. This sliding motion of the buoyancy component, in turn, drives the fixed paddle to slide upward via the sliding core shaft. After the drive motor starts, it rotates the fixed paddle with the help of the stirring shaft to agitate the material. At this time, the limiting slider slides outward under the action of centrifugal force, and this sliding motion causes it to insert into the corresponding limiting groove, thereby limiting the sliding core shaft and effectively improving the agitation efficiency of the material, thus improving the overall working efficiency. It also enables the cleaning of the inner wall of the tank. When the stirring shaft is open... When it starts rotating, it drives the fixed gear to rotate as well. The fixed gear, in turn, meshes with the connecting gear, which in turn drives the reduction gear to rotate. The reduction gear, in turn, meshes with the scraper gear, which drives the rotating frame to rotate. The rotating frame then drives the scraper rod to rotate, thereby cleaning the material adhering to the inner wall of the tank. This not only improves work efficiency but also reduces labor intensity. Through the above mechanism, on the one hand, the fixed blades are automatically adjusted, effectively enhancing the mixing effect of the material and improving work efficiency; on the other hand, the cleaning of the inner wall of the tank is achieved, simplifying the operation process and further improving work efficiency while reducing labor intensity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0016] Figure 2 This is a cross-sectional structural diagram of the main body of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the buoyancy component of this utility model.

[0018] Figure 4 This is a cross-sectional structural schematic diagram of the sliding mandrel of this utility model.

[0019] Figure 5 This is a schematic diagram of the limiting slider of this utility model.

[0020] Figure 6 This is a schematic diagram of the connecting gear of this utility model.

[0021] Figure 7 This is a utility model Figure 2 A magnified structural diagram of part A in the middle.

[0022] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0023] 1. Tank body; 2. Inlet; 3. Fixed support; 4. Drive motor; 5. Stirring shaft; 501. Limiting groove; 502. Fixed gear; 6. Fixed stirring paddle; 7. Sliding spindle; 701. Fixed blade; 702. Buoyancy component; 8. Limiting slider; 801. Tension spring; 9. Connecting gear; 10. Reduction gear; 11. Rotating frame; 1101. Scraper rod; 1102. Scraper gear. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0025] Example 1: As shown in the attached document Figures 1-5 As shown:

[0026] This utility model provides a crystallization reactor for stevia production, including a tank body 1, a feed inlet 2, a fixed support 3, a drive motor 4, a stirring shaft 5, a fixed stirring paddle 6, and a self-adjusting mechanism; the feed inlet 2 is fixedly connected to the upper end face of the tank body 1; the fixed support 3 is fixedly connected to the upper end face of the tank body 1; the drive motor 4 is fixedly installed on the upper end face of the fixed support 3; the stirring shaft 5 is fixedly connected to the lower end of the drive motor 4; the fixed stirring paddle 6 is fixedly connected to the outer side of the lower end of the stirring shaft 5; and the self-adjusting mechanism is located at the upper end of the stirring shaft 5.

[0027] The self-adjusting mechanism includes: a limiting groove 501, a sliding spindle 7, a fixed blade 701, a limiting slider 8, a tension spring 801, and a buoyancy component 702; multiple sets of limiting grooves 501 are provided, and all sets of limiting grooves 501 are opened on the inner side of the stirring shaft 5; the sliding spindle 7 is slidably connected to the inner side of the stirring shaft 5; multiple fixed blades 701 are provided, and multiple fixed blades 701 are fixedly connected to the outer side of the sliding spindle 7; the buoyancy component 702 is fixedly connected to the upper end of the sliding spindle 7 and slidably connected to the outer side of the stirring shaft 5; multiple sets of limiting sliders 8 are provided, and multiple sets of limiting sliders 8 are slidably connected to the inner side of the sliding spindle 7; multiple sets of tension springs 801 are provided, and one end of each set of tension springs 801 is fixedly connected to the outer side of the multiple limiting sliders 8, and the other end of each set of tension springs 801 is fixedly connected to the inner side of the sliding spindle 7.

[0028] The specific usage and function of this embodiment are as follows: When the material is injected into the tank 1, the buoyancy component 702 will slide upward as the liquid level in the tank 1 rises. The sliding of the buoyancy component 702 will drive the fixed blade 701 to slide upward through the sliding spindle 7. When the drive motor 4 is started, the fixed blade 701 will rotate through the stirring shaft 5 to stir the material. The limiting slider 8 will slide outward under the action of centrifugal force. The sliding of the limiting slider 8 will be inserted into the limiting groove 501 to limit the sliding spindle 7.

[0029] Example 2: Based on Example 1, such as Figures 6-7 As shown, the scraping mechanism includes: a fixed gear 502, a connecting gear 9, a reduction gear 10, a rotating frame 11, scraping rods 1101, and scraping gears 1102. The scraping mechanism is located on the inner side of the upper end of the tank body 1. The fixed gear 502 is fixedly connected to the outer side of the upper end of the stirring shaft 5. The connecting gear 9 is rotatably connected to the inner side of the upper end of the tank body 1, and the connecting gear 9 meshes with the fixed gear 502. The reduction gear 10 is fixedly connected to the lower end face of the connecting gear 9. The rotating frame 11 is rotatably connected to the inner side of the upper end of the tank body 1. Multiple scraping rods 1101 are provided, and multiple scraping rods 1101 are fixedly connected to the lower end face of the rotating frame 11. The scraping gear 1102 is fixedly connected to the upper end face of the rotating frame 11, and the scraping gear 1102 meshes with the reduction gear 10.

[0030] The specific usage and function of this embodiment are as follows: When the stirring shaft 5 rotates, the stirring shaft 5 will drive the fixed gear 502 to rotate. The rotation of the fixed gear 502 will drive the reduction gear 10 to rotate under the action of meshing with the connecting gear 9. The rotation of the reduction gear 10 will drive the rotating frame 11 to rotate under the action of meshing with the scraper gear 1102. The rotating frame 11 will drive the scraper rod 1101 to rotate, thereby cleaning the material on the inner wall of the tank 1.

[0031] The following points should be noted in this article:

[0032] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0033] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0034] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A crystallization reactor for stevia production, comprising a tank body (1), a feed inlet (2), a fixed support (3), a drive motor (4), a stirring shaft (5), a fixed stirring paddle (6), a self-adjusting mechanism, and a scraping mechanism; wherein the feed inlet (2) is fixedly connected to the upper end face of the tank body (1); and the fixed support (3) is fixedly connected to the upper end face of the tank body (1); characterized in that: The drive motor (4) is fixedly installed on the upper end of the fixed support (3); the stirring shaft (5) is fixedly connected to the lower end of the drive motor (4) shaft; the fixed stirring paddle (6) is fixedly connected to the outer side of the lower end of the stirring shaft (5); the self-adjusting mechanism is set at the upper end of the stirring shaft (5); and the scraping mechanism is set at the inner side of the upper end of the tank (1).

2. The crystallization reactor for stevia production as described in claim 1, characterized in that: The self-adjusting mechanism includes a sliding mandrel (7) and fixed blades (701); the sliding mandrel (7) is slidably connected to the inner side of the stirring shaft (5); multiple fixed blades (701) are provided, and multiple fixed blades (701) are fixedly connected to the outer side of the sliding mandrel (7).

3. The crystallization reactor for stevia production as described in claim 2, characterized in that: The self-adjusting mechanism further includes a buoyancy component (702); the buoyancy component (702) is fixedly connected to the upper end of the sliding spindle (7), and the buoyancy component (702) is slidably connected to the outside of the stirring shaft (5).

4. The crystallization reactor for stevia production as described in claim 3, characterized in that: The self-adjusting mechanism further includes: a limiting groove (501), a limiting slider (8), and a tension spring (801); the limiting groove (501) is provided in multiple sets, and the multiple sets of limiting grooves (501) are all opened on the inner side of the stirring shaft (5); the limiting slider (8) is provided in multiple sets, and the multiple sets of limiting sliders (8) are all slidably connected to the inner side of the sliding spindle (7); the tension spring (801) is provided in multiple sets, one end of the multiple sets of tension springs (801) is fixedly connected to the outer side of the multiple limiting sliders (8), and the other end of the multiple sets of tension springs (801) is fixedly connected to the inner side of the sliding spindle (7).

5. The crystallization reactor for stevia production as described in claim 1, characterized in that: The scraping mechanism includes: a fixed gear (502), a connecting gear (9), and a reduction gear (10); the fixed gear (502) is fixedly connected to the outer side of the upper end of the stirring shaft (5); the connecting gear (9) is rotatably connected to the inner side of the upper end of the tank (1), and the connecting gear (9) meshes with the fixed gear (502); the reduction gear (10) is fixedly connected to the lower end face of the connecting gear (9).

6. The crystallization reactor for stevia production as described in claim 5, characterized in that: The scraping mechanism further includes: a rotating frame (11), scraping rods (1101) and scraping gears (1102); the rotating frame (11) is rotatably connected to the inner side of the upper end of the tank (1); multiple scraping rods (1101) are provided, and multiple scraping rods (1101) are fixedly connected to the lower end face of the rotating frame (11); the scraping gears (1102) are fixedly connected to the upper end face of the rotating frame (11), and the scraping gears (1102) mesh with the reduction gears (10).

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