A reaction vessel fluidized bed circulating stirring impeller

Abstract

This utility model relates to a laminar flow circulation impeller for a reactor, comprising an impeller shaft, on which a position-adjustable connecting ring is detachably mounted, and the impeller shaft and the connecting ring are connected and fixed by fastening bolts; a radially arranged fixing rod is fixedly connected to the connecting ring, and an extension rod with an adjustable position relative to the fixing rod is connected to the fixing rod, with impeller blades fixedly connected to both the fixing rod and the extension rod; the impeller blades are provided with guide holes penetrating the impeller blades. The connecting ring, carrying the impeller blades, can move along the axis of the impeller shaft, thereby changing the laminar flow position of the impeller blades in the reactor and adjusting the distance between the flow layers stirred by adjacent impeller blades. Furthermore, the detachable nature of the connecting ring allows the number of connecting rings on the impeller shaft to be increased or decreased according to the stirring needs of the reactants in the reactor, which is beneficial for the uniform mixing of reactants, improves convection during stirring, and increases the stirring and mixing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of stirring, and in particular relates to a laminar flow circulation stirring paddle for a reaction vessel. Background Technology

[0002] The stirring paddle is a key component of a reactor, typically consisting of a stirring shaft, stirring blades, and a drive unit. Its main function is to rotate the stirring shaft to drive the stirring blades, agitating the reactants inside the reactor and ensuring uniform mixing. The agitation creates forced convection, reducing diffusion resistance and promoting reactant transfer. It also eliminates temperature gradients within the reactor, ensuring uniform reaction temperature. This provides the necessary energy and suitable flow conditions for the reaction process, enhancing mass and heat transfer and increasing the reaction rate.

[0003] However, most existing reactors use rod-shaped impellers. While these impellers can agitate the reactants, their small cross-sectional area and large gaps result in weak convection. To achieve greater convection, the impeller's rotational speed needs to be increased, requiring higher output power. Furthermore, the impellers are fixed on the shaft, resulting in a constant laminar flow. This causes greater convection in the laminar flow around the impellers compared to other parts of the reactor, reducing the mixing ratio and necessitating longer agitation times. Additionally, the fixed impeller position makes it impossible to agitate reactants with precipitation properties by adjusting the laminar flow position of the impellers.

[0004] To address this issue, a reaction vessel fluidized bed circulating agitator is proposed. Summary of the Invention

[0005] This invention provides a laminar flow circulation stirring impeller for a reactor, which uses stirring blades with a large cross-sectional area. The position of the stirring blades on the stirring shaft is adjustable, thereby changing the laminar flow position of the stirring blades and adapting to the needs of different laminar flow circulation in the reactor. The stirring blades adopt an adjustable length structure, thereby increasing the stirring range covered by the stirring blades and improving the stirring and mixing efficiency.

[0006] The specific technical solution of this utility model is as follows: a reaction vessel fluidized bed circulating stirring impeller, including a stirring shaft, a detachable and position-adjustable connecting ring installed on the stirring shaft, the stirring shaft and the connecting ring being connected and fixed by fastening bolts; a radially arranged fixing rod is fixedly connected to the connecting ring, an extension rod that can be adjusted relative to the fixing rod is connected to the fixing rod, and stirring blades are fixedly connected to both the fixing rod and the extension rod; a guide hole penetrating the stirring blade is provided on the stirring blade.

[0007] The connecting ring on the stirring shaft is position-adjustable, meaning the connecting ring, along with the stirring blades, can move along the axis of the stirring shaft. This changes the laminar flow position of the stirring blades within the reactor and adjusts the distance between the flow layers stirred by adjacent stirring blades. The detachable nature of the connecting rings allows the number of rings on the stirring shaft to be increased or decreased according to the stirring needs of the reactants in the reactor, promoting uniform mixing and improving convection. This reduces the power output required for stirring and allows the position of the stirring flow layers to be changed based on the precipitation properties of the reactants, improving mixing efficiency, increasing the transfer rate of reactants, and facilitating diffusion reactions. The stirring blades are mounted on a fixed rod and an extension rod, respectively. The extension rod can move relative to the fixed rod and adjust its relative position, thereby changing the radial position of the stirring blades and increasing the stirring range covered by the blades, thus improving convection of the reactants on the inner wall of the reactor.

[0008] Preferably, the outer surface of the stirring shaft is provided with an axially extending groove, the end of the groove is open, there are two grooves, and the two grooves are symmetrically arranged relative to the axis of the stirring shaft; the connecting ring is sleeved on the stirring shaft, and the inner ring surface of the connecting ring is provided with a radially inward protruding locking foot, which is adapted to the groove.

[0009] Preferably, the stirring shaft has radial insertion holes spaced along the axis, with the end of the insertion hole being exactly in the groove position. The connecting ring has radial screw holes, with the screw holes being in the position of the retaining foot. The fastening bolt is screwed into the screw hole, and the end of the fastening bolt is inserted into the insertion hole.

[0010] Preferably, the extension rod is parallel to the fixed rod, the side of the fixed rod is provided with a slider with a T-shaped cross section, the side of the extension rod is provided with a groove that matches the slider, one end of the groove is open, the fixed rod is provided with a connecting hole that passes through the fixed rod and the slider at the end, the extension rod is provided with several fixing holes, the connecting bolt passes through the connecting holes and fixing holes, and the end of the connecting bolt is provided with a nut to fix the extension rod and the fixed rod.

[0011] Preferably, the stirring blade on the fixed rod is fixed to the side of the fixed rod, and the stirring blade on the extension rod is fixed to the side of the extension rod. The fixed rod and the extension rod are opposite each other, and the stirring blades are located on both sides. The stirring blade on the fixed rod is on one side, and the stirring blade on the extension rod is on the other side.

[0012] Preferably, the plane of the stirring blade on the fixed rod is parallel to the plane of the stirring blade on the extension rod, and the plane of the stirring blade forms an angle with the axis of the connecting ring.

[0013] Preferably, the end of the stirring blade is semi-circular, and the guide hole on the stirring blade passes through the stirring blade at an angle. The angle of the guide hole on the stirring blade on the fixed rod is opposite to the angle of the guide hole on the stirring blade on the extension rod.

[0014] Preferably, the connecting ring is fixed with three fixing rods, which are spaced 120° apart; the stirring shaft has at least three connecting rings.

[0015] The beneficial effects of this invention are as follows: The connecting ring on the stirring shaft can be adjusted in position, meaning that the connecting ring, carrying the stirring blades, can move along the axis of the stirring shaft, thereby changing the laminar flow position of the stirring blades in the reactor and adjusting the distance between the flow layers stirred by adjacent stirring blades. Simultaneously, the detachable nature of the connecting rings allows the number of connecting rings on the stirring shaft to be increased or decreased according to the stirring needs of the reactants in the reactor, which is beneficial for uniform mixing of the reactants and improves convection during stirring. This reduces the power output required for stirring and allows the stirring flow layer position of the stirring blades to be changed according to the precipitation properties of the reactants, improving the mixing efficiency of the reactants, increasing the transfer speed of the reactants, and facilitating the diffusion reaction of the reactants. Furthermore, by setting the stirring blades on a fixed rod and an extension rod respectively, and allowing the extension rod to move relative to the fixed rod and adjust its relative position, the radial positions of the stirring blades are changed, thereby increasing the stirring range covered by the stirring blades and improving the convection of the reactants on the inner wall of the reactor. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the present invention;

[0017] Figure 2 This is an installation diagram of a connecting ring according to this utility model;

[0018] Figure 3 This is a schematic diagram of the cooperative structure of a fixed rod and an extension rod according to this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of a stirring blade according to the present invention;

[0020] In the diagram: 1. Stirring shaft, 2. Connecting ring, 3. Fastening bolt, 4. Groove, 5. Insertion hole, 6. Fixing rod, 7. Extension rod, 8. Stirring blade, 9. Connecting bolt, 10. Slider, 11. Nut, 12. Slide groove, 13. Clamping foot, 14. Guide hole. Detailed Implementation

[0021] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings. Example

[0022] like Figure 1 Figure 2 Figure 3 Figure 4 As shown, a reaction vessel fluidized bed circulating impeller includes an impeller shaft 1, on which a position-adjustable connecting ring 2 is detachably installed. The connecting ring is annular and is fitted onto the impeller shaft and fixed by fastening bolts 3.

[0023] The stirring shaft has axially extending grooves 4 on its outer surface, both ends of which are open. There are two grooves, symmetrically arranged relative to the axis of the stirring shaft. The inner ring surface of the connecting ring has radially protruding retaining feet 13. The connecting ring is fitted onto the stirring shaft, and the retaining feet are inserted precisely into the grooves. Radial insertion holes 5 are spaced along the axis of the stirring shaft, with the ends of the insertion holes positioned within the grooves. The connecting ring has radial threaded holes, located at the retaining feet. Fastening bolts are screwed into the threaded holes, with the ends of the fastening bolts inserted into the insertion holes. The front end of the fastening bolt is a smooth column, and the rear end is a stud, with the smooth column inserted into the insertion hole.

[0024] A radially arranged fixing rod 6 is fixedly connected to the outer ring of the connecting ring. Multiple fixing rods are arranged at equal angular intervals. In this embodiment, there are three fixing rods, spaced 120° apart, and the cross-section of each fixing rod is rectangular. An extension rod 7, which can be moved relative to the length of the fixing rod to adjust its position, is connected to each fixing rod. A stirring blade 8 is fixedly connected to both the fixing rod and the extension rod, and the stirring blade has a guide hole 14 penetrating through it.

[0025] The extension rod and the fixed rod are arranged parallel to each other. The side of the fixed rod facing the extension rod is provided with a slider 10 with a T-shaped cross section. The length of the slider is less than the length of the fixed rod. The corresponding side of the extension rod is provided with a groove 12 that matches the slider. One end of the groove is open. A connecting hole through the fixed rod and the slider is provided at the end of the fixed rod. Several fixing holes are provided on the extension rod. The connecting bolt 9 passes through the connecting hole and the fixing hole. The end of the connecting bolt is provided with a nut 11 to fix the extension rod and the fixed rod.

[0026] The stirring blades on the fixed rod are fixed to the side of the fixed rod, and the stirring blades on the extension rod are fixed to the side of the extension rod. The fixed rod and the extension rod are opposite each other, with the stirring blades positioned on opposite sides. In this embodiment, the stirring blades on the fixed rod face upwards, and the stirring blades on the extension rod face downwards. The plane containing the stirring blades on the fixed rod and the plane containing the stirring blades on the extension rod are parallel, and the plane containing the stirring blades forms an angle with the axis of the stirring shaft. The end of the stirring blade is semi-circular, and the guide holes on the stirring blades penetrate the stirring blade at an angle. The inclination direction of the guide holes on the stirring blades on the fixed rod is opposite to the inclination direction of the guide holes on the stirring blades on the extension rod.

[0027] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A laminar flow circulation stirring impeller for a reaction vessel, characterized in that, Includes a stirring shaft (1), on which a detachable and adjustable connecting ring (2) is installed, and the stirring shaft and the connecting ring are connected and fixed by fastening bolts (3); a radially arranged fixing rod (6) is fixedly connected to the connecting ring (2), and an extension rod (7) that can be adjusted relative to the fixing rod is connected to the fixing rod (6), and stirring blades (8) are fixedly connected to both the fixing rod and the extension rod; a guide hole (14) is provided on the stirring blade.

2. The reactor laminar flow circulation stirring impeller according to claim 1, characterized in that, The outer surface of the stirring shaft is provided with an axially extending groove (4), the end of the groove is open, there are two grooves, and the two grooves are symmetrically arranged relative to the axis of the stirring shaft; the connecting ring is placed on the stirring shaft, and the inner ring surface of the connecting ring is provided with a radially protruding locking foot (13), which is adapted to the groove.

3. The reactor laminar flow circulation stirring impeller according to claim 2, characterized in that, The stirring shaft is provided with radial insertion holes (5) spaced along the axis. The end of the insertion hole is exactly in the groove position. The connecting ring is provided with radial screw holes. The screw holes are in the position of the clamp foot. The fastening bolt is screwed into the screw hole and the end of the fastening bolt is inserted into the insertion hole.

4. The reaction vessel laminar flow circulation stirring impeller according to claim 1, characterized in that, The extension rod is parallel to the fixed rod. The side of the fixed rod is provided with a slider (10) with a T-shaped cross section. The side of the extension rod is provided with a groove (12) that matches the slider. One end of the groove is open. The fixed rod is provided with a connecting hole that passes through the fixed rod and the slider at the end. The extension rod is provided with several fixing holes. The connecting bolt (9) passes through the connecting hole and the fixing hole. The end of the connecting bolt is provided with a nut to fix the extension rod and the fixed rod.

5. A laminar flow circulation stirring impeller for a reaction vessel according to claim 1 or 4, characterized in that, The stirring blade on the fixed rod is fixed to the side of the fixed rod, and the stirring blade on the extension rod is fixed to the side of the extension rod. The fixed rod and the extension rod are opposite each other, and the stirring blades are exactly on both sides. The stirring blade on the fixed rod is on one side, and the stirring blade on the extension rod is on the other side.

6. The reaction vessel laminar flow circulation stirring impeller according to claim 5, characterized in that, The plane of the stirring blade on the fixed rod is parallel to the plane of the stirring blade on the extension rod, and the plane of the stirring blade forms an angle with the axis of the connecting ring.

7. A reaction vessel laminar flow circulation stirring impeller according to claim 1 or 4, characterized in that, The end of the stirring blade is semi-circular, and the guide hole on the stirring blade passes through the stirring blade at an angle. The angle of the guide hole on the stirring blade on the fixed rod is opposite to the angle of the guide hole on the stirring blade on the extension rod.

8. A laminar flow circulation stirring impeller for a reaction vessel according to claim 1, 2, 3, or 4, characterized in that, There are three fixing rods fixed on the connecting ring, and the three fixing rods are spaced 120° apart from each other; there are at least three connecting rings on the stirring shaft.

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