A precise stirring reaction kettle for fine chemical production

Abstract

The utility model discloses a kind of accurate stirring reaction kettles for fine chemical production, including kettle body, the inside of kettle body is provided with stirring assembly, the stirring assembly includes stirring spindle, the outer circumferential surface of stirring spindle is spaced apart and is provided with three detachable mounting seat along axial direction, upper mounting seat is provided with propelling paddle, middle mounting seat is provided with turbine paddle, lower mounting seat is provided with anchor paddle, adjusting mechanism is provided on the stirring spindle, the utility model is combined design by propelling paddle, turbine paddle and anchor paddle, axial circulation, radial strong shearing and wall scraping function are realized respectively, overall improve material mixing uniformity, satisfy the stirring demand of fine chemical multi-phase state, high viscosity material.

Description

Technical Field

[0001] This utility model relates to the field of fine chemical production equipment technology, specifically to a precision stirring reactor for fine chemical production. Background Technology

[0002] In fine chemical production processes, stirred reactors are core equipment for achieving material mixing, chemical reactions, and homogeneous dispersion. Their stirring effect directly affects product purity, reaction efficiency, and production stability. Material systems in the fine chemical field often have characteristics such as high viscosity, multiphase nature, easy adhesion to walls, and strong reaction sensitivity, which places stringent requirements on the mixing uniformity, shear strength, material circulation capacity, and adaptability of the stirring device.

[0003] In existing technologies, the stirring components of stirred reactors mostly adopt a single type of blade or a fixed combination of blades. To accommodate various stirring requirements, some reactors use a multi-layer blade combination structure. However, the positions of existing combined blades are mostly fixed, making it impossible to adaptively adjust them according to changes in material liquid level or differences in reaction stages. Summary of the Invention

[0004] This utility model addresses the technical problems existing in the prior art by providing a precision stirring reactor for fine chemical production, solving the problems of limited stirring effect, non-adjustable blade position, and easy material residue in existing fine chemical stirring reactors.

[0005] To achieve the above objectives, this utility model provides a precision stirred reactor for fine chemical production, including a reactor body. An stirring assembly is installed inside the reactor body. The stirring assembly includes a stirring main shaft. Three detachable mounting seats are axially spaced on the outer circumference of the stirring main shaft. A propeller blade is installed on the upper mounting seat, a turbine blade is installed on the middle mounting seat, and an anchor blade is installed on the lower mounting seat. An adjustment mechanism is installed on the stirring main shaft.

[0006] It should be noted that the mixing spindle is driven by an external drive motor.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Preferably, the propeller blades are helical blades, used to guide the material at the top of the vessel downwards for circulation and to eliminate liquid stratification.

[0009] Preferably, the turbine blades are inclined blades with an inclination angle of 30° to achieve radial strong shear mixing.

[0010] Preferably, the blade edge of the anchor-type paddle is provided with a polytetrafluoroethylene (PTFE) scraper, and the PTFE scraper is attached to the bottom of the inner wall of the vessel.

[0011] Preferably, the interior of the stirring spindle is hollow, with the top end of the stirring spindle penetrating the vessel body and extending above it. The adjustment mechanism includes a knob rotatably mounted on the top end of the stirring spindle, a screw fixedly connected to the bottom end of the knob inside the stirring spindle, a screw block threaded onto the screw, a sliding groove axially formed on the side wall of the stirring spindle, and one side of the screw block penetrating the sliding groove and slidably extending out of the stirring spindle, and fixedly connected to the intermediate mounting base.

[0012] Preferably, a sealing sleeve is fixedly connected to the intermediate mounting base. The sealing sleeve is fitted onto the stirring main shaft and is used to seal the slide groove to prevent materials inside the vessel from entering the hollow cavity of the stirring main shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the combined design of propeller blades, turbine blades and anchor blades, axial circulation, radial strong shearing and wall scraping functions are realized respectively, which comprehensively improves the mixing uniformity of materials and meets the stirring requirements of multiphase and high viscosity materials in fine chemical industry. An adjustment mechanism is set up to adjust the axial position of the turbine blades, and the stirring parameters can be flexibly adjusted according to changes in material liquid level and differences in reaction stages, thereby improving the adaptability of the equipment and the stirring accuracy. The PTFE scraper blades of the anchor-type paddle fit tightly against the inner wall and bottom of the reactor, which can remove the material adhering to the wall in real time, improve reaction efficiency and product purity, and reduce cleaning difficulty. Attached Figure Description

[0014] Figure 1 This is an isometric view of one side of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the vessel body of this utility model; Figure 3 This is a schematic diagram of the turbine blade structure of this utility model; Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model.

[0015] The meanings of the labels in the diagram are as follows: 1. Vessel body; 2. Stirring assembly; 201. Stirring shaft; 202. Mounting base; 203. Sealing sleeve; 204. Propeller blade; 205. Turbine blade; 206. Anchor blade; 207. PTFE scraper; 3. Adjustment mechanism; 301. Knob; 302. Screw; 303. Screw block; 304. Slide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 As shown, this embodiment provides a precision stirred reaction vessel for fine chemical production, including a vessel body 1. The vessel body 1 serves as a container for material reaction, providing a closed space for the entire stirred reaction process. A stirring assembly 2 is installed inside the vessel body 1, which is used to achieve mixing, dispersion, and reaction promotion of the materials within the vessel body 1.

[0018] The mixing assembly 2 includes a mixing spindle 201, which is the core of the power transmission for the entire mixing assembly 2. It can rotate under the drive of an external drive device (such as a motor). The outer circumference of the mixing spindle 201 is provided with three detachable mounting seats 202 spaced axially. The detachable design facilitates the replacement, maintenance and cleaning of the blades, and allows for flexible replacement of suitable blades according to the characteristics of different materials.

[0019] The upper mounting base 202 is equipped with a propulsion blade 204, which is a spiral blade. Its main function is to guide the material at the top of the vessel 1 to circulate downwards, effectively eliminate the liquid surface stratification phenomenon, and ensure that the material at the top and bottom of the vessel 1 can be fully mixed.

[0020] The intermediate mounting base 202 is equipped with a turbine blade 205. The blade of the turbine blade 205 is an inclined blade with an inclination angle of 30°. This structural design enables it to achieve radial strong shear stirring, which can efficiently disperse and emulsify materials, and is especially suitable for the mixing reaction of multiphase materials.

[0021] Anchor blades 206 are installed on the lower mounting base 202. The edges of the anchor blades 206 are provided with polytetrafluoroethylene scrapers 207, and the polytetrafluoroethylene scrapers 207 are attached to the bottom of the inner wall of the vessel body 1. Polytetrafluoroethylene material has the characteristics of strong corrosion resistance and low coefficient of friction. During the stirring process, it can scrape off the material adhering to the inner wall and bottom of the vessel body 1 in real time, avoiding material residue on the wall from affecting the reaction efficiency and product purity.

[0022] An adjustment mechanism 3 is provided on the stirring main shaft 201 to adjust the axial position of the intermediate mounting base 202 and the turbine blade 205 to adapt to the stirring requirements of different liquid levels and different reaction stages.

[0023] In summary, the improvement of this embodiment lies in the following: through the combined design of propeller blade 204, turbine blade 205 and anchor blade 206, axial circulation, radial strong shear and wall scraping functions are realized respectively, which comprehensively improves the uniformity of material mixing and meets the stirring requirements of multiphase and high viscosity materials in fine chemical industry.

[0024] Based on the above, other structures also need to be disclosed in detail, such as: Specifically, the interior of the stirring shaft 201 is hollow, providing space for the adjustment mechanism 3. The top end of the stirring shaft 201 penetrates the vessel body 1 and extends above it, facilitating connection to an external drive device and operation of the adjustment mechanism 3. The adjustment mechanism 3 includes a knob 301 rotatably mounted on the top end of the stirring shaft 201. A screw 302 is fixedly connected to the bottom end of the knob 301 and inside the stirring shaft 201. A screw block 303 is threaded onto the screw 302. A sliding groove 304 is axially formed on the side wall of the stirring shaft 201. One side of the screw block 303 penetrates the sliding groove 304 and slidably extends out of the stirring shaft 201, and is fixedly connected to the intermediate mounting base 202. When the knob 301 is turned, the screw 302 rotates synchronously with the knob 301. The screw block 303 moves axially along the screw 302 under the action of the thread, and then drives the intermediate mounting seat 202 and the turbine blade 205 to slide up and down along the slide groove 304 through the screw block 303, so as to achieve precise adjustment of the position of the turbine blade 205.

[0025] A sealing sleeve 203 is fixedly connected to the intermediate mounting base 202. The sealing sleeve 203 is fitted onto the stirring main shaft 201. The sealing sleeve 203 is used to seal the slide groove 304 to prevent the material in the vessel from entering the hollow cavity of the stirring main shaft 201 through the slide groove 304, thereby avoiding material contamination of the regulating mechanism 3 or failure of the regulating mechanism 3 due to material solidification, while ensuring the sealing of the vessel body 1.

[0026] In summary, the working principle of this solution is as follows: Preparation stage: Based on the characteristics of the material to be processed and the reaction requirements, install the appropriate propeller blades 204, turbine blades 205 and anchor blades 206 through the detachable mounting base 202 to ensure that each blade is firmly installed.

[0027] Material addition: The material to be reacted is added into the reactor 1 through the feed port at the top of the reactor 1. According to the amount of material and the liquid level, the knob 301 of the adjustment mechanism 3 is turned. Through the threaded engagement of the screw 302 and the screw block 303, the intermediate mounting seat 202 and the turbine blade 205 are moved up and down along the slide 304. The turbine blade 205 is adjusted to a suitable position (usually located in the middle area of ​​the liquid level). At this time, the sealing sleeve 203 moves synchronously with the intermediate mounting seat 202, always maintaining the seal on the slide 304.

[0028] Stirring reaction: Start the drive motor to rotate the stirring main shaft 201, and each blade rotates synchronously with the main shaft: The rotating propeller blade 204 generates axial thrust, guiding the material at the top of the vessel 1 to circulate downwards and eliminating liquid stratification. The turbine blade 205 rotates at a 30° angle, generating strong radial shear force to disperse and emulsify the material; The anchor blade 206 rotates with the main shaft, and the polytetrafluoroethylene scraper 207 on its edge slides close to the inner wall and bottom of the vessel body 1 to scrape off the attached material and prevent residue from sticking to the wall.

[0029] Process adjustment: If it is necessary to adjust the stirring effect during the reaction, the position of the turbine blade 205 can be finely adjusted at any time by turning the knob 301: Turning the knob 301 clockwise will cause the screw 302 to drive the screw block 303 to move upward, and the turbine blade 205 will move upward; turning the knob 301 counterclockwise will cause the turbine blade 205 to move downward, until the ideal stirring state is achieved.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A precision stirred reactor for fine chemical production, comprising a reactor body (1), wherein a stirring assembly (2) is disposed inside the reactor body (1), characterized in that: The stirring assembly (2) includes a stirring spindle (201). Three detachable mounting seats (202) are arranged axially on the outer periphery of the stirring spindle (201). A propulsion blade (204) is provided on the upper mounting seat (202), a turbine blade (205) is provided on the middle mounting seat (202), and an anchor blade (206) is provided on the lower mounting seat (202). An adjustment mechanism (3) is provided on the stirring spindle (201).

2. The precision stirred reactor for fine chemical production according to claim 1, characterized in that: The propulsion blade (204) is a helical blade used to guide the material at the top of the vessel (1) to circulate downwards and eliminate liquid stratification.

3. The precision stirred reactor for fine chemical production according to claim 1, characterized in that: The turbine blades (205) are inclined blades with an inclination angle of 30°, which are used to achieve radial strong shear stirring.

4. The precision stirred reactor for fine chemical production according to claim 1, characterized in that: The edge of the anchor blade (206) is provided with a polytetrafluoroethylene scraper (207), and the polytetrafluoroethylene scraper (207) is attached to the bottom of the inner wall of the vessel body (1).

5. The precision stirred reactor for fine chemical production according to claim 1, characterized in that: The interior of the stirring spindle (201) is hollow. The top end of the stirring spindle (201) passes through the vessel body (1) and extends to the top of the vessel body (1). The adjustment mechanism (3) includes a knob (301) rotatably mounted on the top end of the stirring spindle (201). A screw (302) is fixedly connected to the bottom end of the knob (301) and inside the stirring spindle (201). A screw block (303) is threaded onto the screw (302). A sliding groove (304) is provided on the side wall of the stirring spindle (201) along the axial direction. One side of the screw block (303) passes through the sliding groove (304) and extends slidably out of the stirring spindle (201), and is fixedly connected to the intermediate mounting base (202).

6. The precision stirred reactor for fine chemical production according to claim 5, characterized in that: A sealing sleeve (203) is fixedly connected to the mounting base (202) in the middle. The sealing sleeve (203) is sleeved on the stirring spindle (201). The sealing sleeve (203) is used to seal the slide groove (304) to prevent the material in the vessel from entering the hollow cavity of the stirring spindle (201).

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