A pressure self-balancing structure of a stirrer

Abstract

The application discloses a stirrer pressure self-balancing structure and belongs to the technical field of stirrers. Mainly comprising a stirring kettle body, a mounting rack is fixedly installed at the top end of the stirring kettle body, a speed reducer motor is fixedly installed at the top end of the mounting rack, a magnetic rotation structure is rotationally connected to the bottom end of the speed reducer motor, a static pressure adjusting assembly is arranged at the bottom end of the mounting rack, the static pressure adjusting assembly comprises a mounting plate fixedly installed at the bottom end of the mounting rack, a static pressure pipe is integrally connected to the bottom end of the mounting plate, a horizontal flow adjusting assembly is arranged at the bottom end of the magnetic rotation structure, and the horizontal flow adjusting assembly comprises a stirring shaft fixedly connected to the bottom end of the magnetic rotation structure. The stirrer pressure self-balancing structure can balance the downward force and the upward force by reasonably designing the pressure bearing area of the related structure, so that the axial force of the stirring shaft is self-balanced, and the net axial load borne by the thrust bearing is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of agitator technology, specifically to a self-balancing pressure structure for agitators. Background Technology

[0002] A stirred tank reactor is one of the core pieces of equipment in chemical production, mainly used to realize processes such as mixing, reaction, heat transfer, and mass transfer of materials. It uses a mechanical stirring device to drive the materials inside the reactor to form a specific flow pattern, ensuring that different components are in full contact and undergo chemical reactions or physical changes. In the process of using chemical mixing tanks, stirring is required by a stirrer. Currently, magnetic drive stirrers are commonly used as an innovative technology for chemical mixing tanks. Through the principle of magnetic coupling, "contactless" power transmission is achieved, which solves the leakage risk of traditional mechanical seals. However, when existing agitators are in operation, the lower end (blade end) of the agitator shaft is immersed in the liquid and bears the static pressure of the liquid, while the upper end is usually in a gas phase environment or a lower pressure environment. This pressure difference will generate an axial force (buoyancy effect) from bottom to top on the agitator shaft. This axial force is entirely borne by the thrust bearing that supports the agitator shaft. Long-term operation under a large axial load will significantly accelerate the wear and fatigue of the bearing, shorten its service life, and even lead to bearing failure, which in turn will cause equipment downtime, affect the continuity and stability of production, and increase maintenance costs. Therefore, it is necessary to provide a self-balancing structure for the agitator pressure to solve the above problems.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0004] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a self-balancing structure for agitator pressure, which can automatically balance and adjust when the agitator experiences sudden changes in operating conditions such as high temperature or load, thereby ensuring the normal operation of the equipment.

[0005] The technical solution adopted by this application to solve its technical problem is: a self-balancing structure for a stirrer pressure, including a stirring vessel body, a mounting frame fixedly installed at the top of the stirring vessel body, a geared motor fixedly installed at the top of the mounting frame, and a magnetic rotating structure rotatably connected to the bottom of the geared motor; A static pressure regulating assembly is provided on one side of the bottom end of the mounting bracket, the static pressure regulating assembly comprising: A mounting plate is fixedly installed at the bottom of the mounting frame, and a static pressure pipe is integrally connected to the bottom of the mounting plate; The bottom end of the magnetic transfer structure is provided with a flow adjustment component, which includes: A stirring shaft is fixedly connected to the bottom of the magnetic rotating structure. The outer wall of the stirring shaft is provided with a radial through hole, and the bottom end of the stirring shaft is connected to a stirring blade.

[0006] Furthermore, a cylindrical cavity is provided on the inner side of the static pressure tube, and an annular gap is formed between the cylindrical cavity and the stirring shaft.

[0007] Furthermore, the inner wall of the static pressure pipe is provided with a static pressure interface, and multiple sets of static pressure interfaces are provided.

[0008] Furthermore, an adjusting shaft is installed at the middle of the top end of the static pressure pipe, and the stirring shaft is fixedly connected to the inner ring of the adjusting shaft.

[0009] Furthermore, a cavity is provided on the inner side of the stirring shaft, and a bottom connector is fixedly connected to the bottom end of the stirring shaft.

[0010] Furthermore, the bottom connector has side holes distributed in a ring on its outer side.

[0011] Furthermore, the stirring blade is fixedly connected to the stirring shaft, and a balance through hole is provided on the inner side of the stirring blade from top to bottom.

[0012] Furthermore, an extension column is fixedly connected to the bottom end of the bottom connector, and a support shaft that is fixedly connected to the bottom wall of the mixing vessel is rotatably connected to the bottom end of the extension column.

[0013] The beneficial effects of this application are as follows: The self-balancing structure of the agitator provided by this application introduces a reference pressure through the static pressure interface via the static pressure pipe. This reference pressure is guided to the bottom joint of the lower region of the agitator shaft through the annular gap and radial through hole. At the same time, the balance through hole on the agitator blade makes it easier for the liquid pressure above and below the blade to tend to balance. Through pressure guidance and balance design, the axial force caused by the liquid static pressure difference is reduced, the shaft is protected, and the processing efficiency of the agitator is improved.

[0014] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a self-balancing pressure structure for a stirrer according to this application; Figure 2 for Figure 1 Overall schematic diagram of the mixing mechanism; Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the medium static pressure regulating component; Figure 4 for Figure 2 A partial cross-sectional schematic diagram of the medium-pressure flow regulating component; The following are the labeling elements in the figure: 1. Stirring vessel body; 2. Mounting frame; 3. Gear motor; 4. Magnetic rotation structure; 5. Static pressure regulating assembly; 501. Mounting plate; 502. Static pressure pipe; 503. Cylindrical cavity; 504. Static pressure interface; 505. Adjusting shaft; 6. Flow adjustment assembly; 601. Stirring shaft; 602. Cavity; 603. Radial through hole; 604. Stirring blade; 605. Balance through hole; 606. Bottom connector; 607. Side hole; 7. Extension column; 8. Supporting joint. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] like Figure 1-4 As shown, this application provides a self-balancing pressure structure for a stirrer, including a stirring vessel 1. The stirring vessel 1 is used to support the chemical to be stirred. A mounting bracket 2 is fixedly installed at the top of the stirring vessel 1. The mounting bracket 2 provides a support point for positioning the geared motor 3 and the mounting plate 501. The geared motor 3 is fixedly installed at the top of the mounting bracket 2. A magnetic rotating structure 4 is rotatably connected to the bottom of the geared motor 3. The magnetic rotating structure 4 is composed of an outer magnetic rotor, an isolation sleeve and an inner magnetic rotor. The stirring shaft 601 is connected to the inner magnetic rotor. like Figure 3 As shown, an adjusting shaft 505 is installed at the middle of the top end of the static pressure pipe 502. The stirring shaft 601 is fixedly connected to the inner ring of the adjusting shaft 505. The stirring shaft 601 is too long, so the adjusting shaft 505 is set to improve the stability of the rotational connection.

[0019] like Figure 4As shown, an extension column 7 is fixedly connected to the bottom end of the bottom connector 606. The bottom end of the extension column 7 is rotatably connected to a support shaft 8 that is fixedly connected to the bottom wall of the mixing vessel 1. The extension column 7 is connected to the bottom end of the bottom connector 606 until the bottom wall of the mixing vessel 1 is rotatably connected to the support shaft 8, which further improves the stability of the connection and facilitates pressure balance.

[0020] A static pressure regulating component 5 is provided on one side of the bottom end of the mounting frame 2. The static pressure regulating component 5 is used to guide the gas phase pressure at the top of the stirring vessel 1 downward. A mounting plate 501 is fixedly installed at the bottom of the mounting bracket 2, and a static pressure pipe 502 is integrally connected to the bottom of the mounting plate 501. like Figure 3 As shown, a cylindrical cavity 503 is provided on the inner side of the static pressure pipe 502. An annular gap is formed between the cylindrical cavity 503 and the stirring shaft 601. The static pressure pipe 502 and the stirring shaft 601 are relatively sealed by at least one sealing element. The sealing element is located above the radial through hole 603 and the static pressure interface 504 and is used to isolate the environment above the annular gap.

[0021] like Figure 3 As shown, a static pressure interface 504 is provided inside the outer wall of the static pressure pipe 502. Multiple sets of static pressure interfaces 504 are provided. The static pressure interfaces 504 are connected to the top gas phase space of the stirring vessel 1 or an external pressure balancing device through pipelines.

[0022] The bottom of the magnetic rotating structure 4 is provided with a flow regulating component 6, which is used to guide the liquid phase pressure at the bottom of the stirred tank 1 upward. A stirring shaft 601 is fixedly connected to the bottom of the magnetic rotating structure 4. A radial through hole 603 is provided on the outer wall of the stirring shaft 601. A stirring blade 604 is connected to the bottom of the stirring shaft 601.

[0023] like Figure 4 As shown, a cavity 602 is provided inside the stirring shaft 601, and a bottom connector 606 is fixedly connected to the bottom end of the stirring shaft 601. Side holes 607 are distributed in an annular pattern on the outer side of the bottom connector 606. The cavity 602 is provided inside the stirring shaft 601, and the inner end of the radial through hole 603 is directly connected to the liquid environment below the stirring shaft 601 through the side hole 607 at the bottom end.

[0024] like Figure 4 As shown, the stirring blade 604 is fixedly connected to the stirring shaft 601. A balance through hole 605 is provided through the inner side of the stirring blade 604 from top to bottom. Multiple balance through holes 605 are provided on the stirring blade 604 to enhance the pressure balance effect.

[0025] Working principle: When stirring chemical products, the magnetic rotating structure 4 is driven to rotate by the reduction motor 3, which in turn drives the stirring shaft 601 and stirring blades 604 at the bottom to rotate, achieving the stirring effect. During the stirring process, the gas phase pressure at the top of the stirring vessel 1 is introduced into the annular gap formed between the stirring shaft 601 and the cylindrical cavity 503 through the static pressure interface 504. The gas phase pressure at the top of the container is transmitted to the internal cavity 602 of the stirring shaft 601 through the annular gap and the radial through hole 603, and finally acts on the lower end of the stirring shaft 601 bottom joint 606 area and the upper part of the stirring blades 604, forming a downward force. The liquid pressure at the bottom of the stirring vessel 1 acts on the bottom surface of the stirring blades 604 and the end of the stirring shaft 601. Due to the presence of the balance through hole 605, the liquid pressure above and below the stirring blade 604 is easily balanced, reducing the axial force difference generated by the blade itself, thereby reducing the load on the adjusting shaft 505 and the thrust shaft at the top of the stirring shaft 601. Furthermore, the axial support provided by the extension column 7 and the support shaft 8 installed at the bottom ensures the stirring stability and efficiency of the equipment.

[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A self-balancing pressure structure for a stirrer, characterized in that: include: A stirring vessel body (1) is provided with a mounting bracket (2) fixedly installed at the top of the stirring vessel body (1), and a geared motor (3) is fixedly installed at the top of the mounting bracket (2). A magnetic rotating structure (4) is rotatably connected to the bottom of the geared motor (3). A static pressure regulating component (5) is provided on one side of the bottom end of the mounting bracket (2), the static pressure regulating component (5) comprising: A mounting plate (501) is fixedly installed at the bottom of the mounting bracket (2), and a static pressure pipe (502) is integrally connected to the bottom of the mounting plate (501). The bottom end of the magnetic transfer structure (4) is provided with a flow adjustment component (6), the flow adjustment component (6) includes: A stirring shaft (601) is fixedly connected to the bottom of the magnetic rotating structure (4). The outer wall of the stirring shaft (601) is provided with a radial through hole (603). The bottom end of the stirring shaft (601) is connected with a stirring blade (604).

2. The self-balancing pressure structure for a stirrer according to claim 1, characterized in that: The inner side of the static pressure tube (502) is provided with a cylindrical cavity (503), and an annular gap is formed between the cylindrical cavity (503) and the stirring shaft (601).

3. The self-balancing pressure structure for a stirrer according to claim 1, characterized in that: The static pressure pipe (502) has a static pressure interface (504) inside its outer wall, and there are multiple sets of static pressure interfaces (504).

4. The self-balancing pressure structure for a stirrer according to claim 1, characterized in that: An adjusting shaft (505) is installed at the top center of the static pressure pipe (502), and the stirring shaft (601) is fixedly connected to the inner ring of the adjusting shaft (505).

5. The self-balancing pressure structure for a stirrer according to claim 1, characterized in that: A cavity (602) is provided on the inner side of the stirring shaft (601), and a bottom connector (606) is fixedly connected to the bottom end of the stirring shaft (601).

6. The self-balancing pressure structure for a stirrer according to claim 5, characterized in that: The bottom connector (606) has side holes (607) distributed in an annular pattern on its outer side.

7. The self-balancing pressure structure for a stirrer according to claim 1, characterized in that: The stirring blade (604) is fixedly connected to the stirring shaft (601), and a balance through hole (605) is provided on the inner side of the stirring blade (604) from top to bottom.

8. The self-balancing pressure structure for a stirrer according to claim 5, characterized in that: The bottom end of the bottom connector (606) is fixedly connected to an extension column (7), and the bottom end of the extension column (7) is rotatably connected to a support shaft (8) that is fixedly connected to the bottom wall of the stirring vessel (1).

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