A stirrer for use in a reactor

Abstract

This utility model relates to the field of agitator technology, specifically an agitator for use in a vessel, comprising an agitator shaft and a connecting shaft. Agitator rod is fixedly mounted at the bottom end of the agitator shaft. Two sets of agitator rods are symmetrically arranged. An arc-shaped scraper is mounted at the end of each agitator rod furthest from the agitator shaft. The arc-shaped scraper is hinged to the agitator rod. A spring is installed above the agitator rod and the arc-shaped scraper. This utility model achieves a tight fit between the agitator shaft and the connecting shaft via a mounting groove and is secured by fastening bolts in the pin holes. This ensures a stable connection and allows for adjustments to the overall length by changing the position of the pin holes to accommodate different vessel depths. Furthermore, the flange and annularly distributed fixing holes at the top of the connecting shaft, combined with the design of the connection structure at the top of the agitator shaft, enable quick and precise docking with the drive device, significantly reducing installation and debugging difficulty and improving equipment assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of casting mold ejection devices, and in particular to a stirrer for use in a reactor. Background Technology

[0002] In industrial production, reactors are key devices for material mixing and reaction. The performance of their internal agitators directly affects production efficiency and product quality. In practical applications, traditional agitators have a single fixing method for the agitator shaft and connecting shaft, making it difficult to flexibly adjust the overall length according to different reactor depths. Furthermore, the docking process with the drive device is complex and time-consuming, severely restricting the equipment's assembly efficiency. Moreover, materials tend to stick to the reactor wall during mixing, affecting the uniformity of mixing. Additionally, if there are lumpy materials inside the reactor, traditional agitators are difficult to break them up effectively, resulting in poor material mixing quality. Furthermore, poor circulation of materials inside the reactor also significantly reduces mixing efficiency.

[0003] For example, the internally inclined I-shaped agitator proposed in publication number CN115464773A points out that traditional axial flow impellers can only generate strong axial flow, and the mass exchange efficiency between axial and radial flow is low. Traditional radial flow impellers, such as six-bladed disc turbines, can generate enhanced radial flow in both upper and lower circulation loops, and the turbulence intensity is improved to a certain extent. However, the mass exchange efficiency within the agitator is still poor, especially in the upper and lower regions and near the wall. This results in poor vertical circulation of materials within the agitator and the tendency for materials to adhere to the agitator wall during the agitation process.

[0004] Therefore, we propose an in-vessel stirrer. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an in-vessel stirrer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An in-vessel stirrer includes a stirring shaft and a connecting shaft. A stirring rod is fixedly mounted on the bottom end of the stirring shaft. Two sets of stirring rods are arranged symmetrically. An arc-shaped scraper is mounted on the end of the stirring rod away from the stirring shaft. The arc-shaped scraper is hinged to the stirring rod. A spring is mounted above the stirring rod and the arc-shaped scraper. One end of the spring is mounted on the inner wall of the arc-shaped scraper, and the other end of the spring is mounted above the stirring rod. The spring is fixedly connected to both the arc-shaped scraper and the stirring rod.

[0008] As a further embodiment of this utility model: an installation groove is provided above the stirring shaft, the bottom end of the connecting shaft is set in the installation groove, the installation groove is tightly fitted with the connecting shaft, a flange is connected to the top of the connecting shaft, and several fixing holes are provided in a ring shape above the flange.

[0009] As a further improvement of this utility model: a pin hole is provided above the stirring shaft and the connecting shaft, and a plurality of pin holes are provided vertically, with fastening bolts fixedly installed inside the pin holes.

[0010] As a further embodiment of this utility model: a fixing sleeve is fitted above the connecting shaft, the fixing sleeve is fixedly connected to the connecting shaft, and a guide plate is provided at the bottom outer side of the fixing sleeve, and at least two guide plates are provided.

[0011] As a further improvement of this utility model: the bottom end of the stirring shaft is provided with crushing teeth, the crushing teeth are triangular pyramidal in structure, and the tips of the crushing teeth are facing away from the stirring shaft.

[0012] As a further improvement of this utility model: a plurality of protrusions are provided on the outer side of the arc-shaped scraper, and the protrusions are hemispherical in shape.

[0013] Compared with the prior art, the present invention provides a stirrer for use in a reactor, which has the following advantages:

[0014] 1. This utility model uses a stirring shaft and a connecting shaft that fit tightly together through an installation groove and are fixed together with fastening bolts in the pin holes. This ensures the stability of the connection between the two and allows the overall length to be changed by adjusting the position of the pin holes according to actual needs, adapting to different vessel depths. Furthermore, the flange and annularly distributed fixing holes at the top of the connecting shaft, combined with the design of the connecting structure at the top of the stirring shaft, enable quick and precise docking with the drive device, significantly reducing the difficulty of installation and debugging and improving equipment assembly efficiency.

[0015] 2. This utility model, through the symmetrical arrangement of the stirring rod and the arc-shaped scraper, can effectively scrape off the material on the vessel wall during rotation, preventing material adhesion. The hemispherical protrusions on the outer side of the scraper further enhance the scraping effect. The triangular pyramidal crushing teeth at the bottom of the stirring shaft can crush the blocky material in the vessel, improving the uniformity of material mixing. At the same time, the guide plate on the connecting shaft can guide the material in the upper part of the vessel to flow downward, forming a convection circulation with the lower stirring, which greatly improves the overall stirring efficiency and the quality of material mixing.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a stirrer for use in a reactor proposed in this utility model.

[0018] Figure 2 This is a front view cross-sectional structural diagram of a stirrer for use in a reactor proposed in this utility model;

[0019] Figure 3 This utility model proposes an in-vessel stirrer. Figure 1 Enlarged overall structural diagram at point A;

[0020] Figure 4 This is a schematic diagram of the overall structure of the fixed sleeve for the stirrer inside the vessel proposed in this utility model.

[0021] In the diagram: 1. Stirring shaft; 2. Connecting shaft; 3. Stirring rod; 4. Arc-shaped scraper; 5. Spring; 6. Mounting groove; 7. Flange; 8. Fixing hole; 9. Pin hole; 10. Fastening bolt; 11. Fixing sleeve; 12. Guide plate; 13. Crushing teeth; 14. Protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example: A stirrer for use in a reactor, such as... Figures 1-4 As shown, the device includes a stirring shaft 1 and a connecting shaft 2. A stirring rod 3 is fixedly installed at the bottom end of the stirring shaft 1. There are two sets of stirring rods 3, which are arranged symmetrically. An arc-shaped scraper 4 is installed at the end of the stirring rod 3 away from the stirring shaft 1. The arc-shaped scraper 4 is connected to the stirring rod 3 by a hinge. A spring 5 is installed above the stirring rod 3 and the arc-shaped scraper 4. One end of the spring 5 is located on the inner wall of the arc-shaped scraper 4, and the other end of the spring 5 is located above the stirring rod 3. The spring 5 is fixedly connected to the arc-shaped scraper 4 and the stirring rod 3 respectively. With the symmetrical arrangement of the stirring rod 3 and the arc-shaped scraper 4, the material on the vessel wall can be effectively scraped during rotation to prevent the material from sticking together. The hemispherical protrusions 14 on the outer side of the scraper further enhance the scraping effect.

[0025] like Figures 1-4 As shown, an installation groove 6 is provided above the stirring shaft 1, and the bottom end of the connecting shaft 2 is set in the installation groove 6. The installation groove 6 is tightly fitted with the connecting shaft 2. A flange 7 is connected to the top of the connecting shaft 2. Several fixing holes 8 are provided in a ring shape above the flange 7. The connection to the top of the stirring shaft 1 allows for quick and precise docking with the drive device, which greatly reduces the difficulty of installation and debugging and improves the equipment assembly efficiency.

[0026] like Figures 1-4 As shown, a pin hole 9 is provided above the stirring shaft 1 and the connecting shaft 2. Several pin holes 9 are vertically provided. Fastening bolts 10 are fixedly installed inside the pin holes 9. The stirring shaft 1 and the connecting shaft 2 are tightly fitted through the mounting groove 6 and fixed with the fastening bolts 10 in the pin holes 9. This not only ensures the stability of the connection between the two, but also allows the overall length to be changed by adjusting the mating position of the pin holes 9 according to actual needs, so as to adapt to different vessel depths.

[0027] like Figures 1-4 As shown, a fixed sleeve 11 is fitted above the connecting shaft 2. The fixed sleeve 11 is fixedly connected to the connecting shaft 2. A guide plate 12 is provided at the bottom outer side of the fixed sleeve 11. At least two guide plates 12 are provided. The guide plates 12 on the connecting shaft 2 can guide the upper material in the kettle to flow downward, forming a convection circulation with the lower stirring, which greatly improves the overall stirring efficiency and the mixing quality of the material.

[0028] like Figures 1-4 As shown, the bottom end of the stirring shaft 1 is provided with crushing teeth 13. The crushing teeth 13 have a triangular pyramid structure, and the tip of the crushing teeth 13 is facing away from the stirring shaft 1. The triangular pyramid structure crushing teeth 13 at the bottom end of the stirring shaft 1 can crush the blocky materials in the kettle and improve the uniformity of material mixing.

[0029] like Figures 1-4 As shown, a number of protrusions 14 are provided on the outer side of the arc-shaped scraper 4, and the protrusions 14 are hemispherical in shape. The hemispherical protrusions 14 on the outer side of the scraper can further enhance the scraping effect.

[0030] Working principle: When the agitator is working, the flange 7 at the top of the connecting shaft 2 is connected to the drive device through the fixing hole 8. The agitator shaft 1 and the connecting shaft 2 are tightly fitted by the mounting groove 6 and then fixed by the fastening bolt 10 in the pin hole 9. The overall length can also be changed by adjusting the position of the pin hole 9 to adapt to different vessel depths. After starting, the rotation of the agitator shaft 1 drives the two sets of symmetrical agitator rods 3 to rotate. The arc-shaped scraper 4 is pressed against the vessel wall by the action of the spring 5. The outer hemispherical protrusion 14 enhances the scraping effect and prevents the material from sticking together. The triangular pyramid structure crushing teeth 13 at the bottom of the agitator shaft 1 crushes the blocky material and improves the mixing uniformity. The guide plate 12 on the outside of the fixing sleeve 11 on the connecting shaft 2 guides the upper material in the vessel to flow downward, forming a convection circulation with the lower agitator, which greatly improves the mixing efficiency and the mixing quality of the material.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A stirrer for use in a vessel, comprising a stirring shaft (1) and a connecting shaft (2), characterized in that... A stirring rod (3) is fixedly installed at the bottom end of the stirring shaft (1). There are two sets of stirring rods (3) arranged symmetrically. An arc-shaped scraper (4) is installed at the end of the stirring rod (3) away from the stirring shaft (1). The arc-shaped scraper (4) is connected to the stirring rod (3) by a hinge. A spring (5) is installed above the stirring rod (3) and the arc-shaped scraper (4). One end of the spring (5) is installed on the inner wall of the arc-shaped scraper (4), and the other end of the spring (5) is installed above the stirring rod (3). The spring (5) is fixedly connected to the arc-shaped scraper (4) and the stirring rod (3) respectively.

2. The stirrer for use in a reactor according to claim 1, characterized in that... An installation groove (6) is provided above the stirring shaft (1), and the bottom end of the connecting shaft (2) is set in the installation groove (6). The installation groove (6) is closely fitted with the connecting shaft (2). A flange (7) is connected to the top of the connecting shaft (2), and several fixing holes (8) are provided in a ring shape above the flange (7).

3. The stirrer for use in a reactor according to claim 1, characterized in that... A pin hole (9) is provided above the stirring shaft (1) and the connecting shaft (2). Several pin holes (9) are vertically provided, and fastening bolts (10) are fixedly installed inside the pin holes (9).

4. The stirrer for use in a reactor according to claim 1, characterized in that... A fixing sleeve (11) is fitted on the upper part of the connecting shaft (2). The fixing sleeve (11) is fixedly connected to the connecting shaft (2). A guide plate (12) is provided on the outer bottom end of the fixing sleeve (11). There are at least two guide plates (12).

5. A stirrer for use in a reactor according to claim 1, characterized in that... The bottom end of the stirring shaft (1) is provided with a crushing tooth (13), which is a triangular pyramid structure and the tip of the crushing tooth (13) is facing away from the stirring shaft (1).

6. A stirrer for use in a reactor according to claim 1, characterized in that... The outer side of the arc-shaped scraper (4) is provided with protrusions (14), and there are several protrusions (14), and the protrusions (14) are hemispherical.

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