A mixer air-filling sealing mechanism

Abstract

This utility model relates to the field of mixer air-filling technology and discloses a mixer air-filling sealing mechanism, including a shaft seat. The top of the shaft seat has a mounting hole, and the bottom of the shaft seat has several threaded holes. A press-fit screw is threaded into the threaded holes. The press-fit screw passes through the shaft seat and presses the end of the connecting pipe to form a sealed and fixed connection. By setting a second rubber oil seal, a first rubber oil seal, and a pressure ring, the second rubber oil seal directly seals the dynamic gap between the main shaft and the connecting pipe. Combined with the upper radial sealing of the first rubber oil seal and the pressure ring and the bottom pressing seal of the upper cover, an upper-middle-lower sealing system is formed, which effectively blocks the gas leakage path. By setting a joint and an air inlet pipe, the joint and the air inlet pipe are threadedly connected, and there is no loose gap at the static connection, preventing gas from leaking from the fixed part. By setting an annular support column, the annular support column provides radial positioning to prevent eccentric shaking when the main shaft rotates.

Description

Technical Field

[0001] This utility model relates to the field of air-filling technology for mixers, specifically to an air-filling and sealing mechanism for mixers. Background Technology

[0002] In the field of industrial mixing, the air-filled sealing mechanism delivers external gas to the mixing chamber without leakage when the main shaft rotates at high speed, while preventing materials or impurities from entering the air circuit system in reverse.

[0003] However, in existing technologies, seals are often integrated with the shaft seat and main shaft, requiring the entire mixing shaft system to be disassembled for replacement. This is cumbersome and significantly increases the total lifecycle cost of the equipment. In addition, the air supply channels of some traditional mechanisms are tortuous and prone to scale buildup on the inner walls, which may lead to air blockage after long-term use, increasing maintenance difficulty and cost. In view of this, this utility model proposes a mixing machine air-filling sealing mechanism to solve the above problems and provide a technical solution that is easy to replace, has a multi-stage sealing system, and can ensure long-term stable operation. Utility Model Content

[0004] The purpose of this invention is to provide a gas-filling and sealing mechanism for a mixer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas-filling and sealing mechanism for a mixer, including a shaft seat,

[0006] The top of the bearing seat is provided with a mounting hole, and the bottom of the bearing seat is provided with a plurality of threaded holes. A press-fit screw is threaded into the threaded hole. The press-fit screw passes through the bearing seat and presses the end of the connecting pipe to form a sealed and fixed connection.

[0007] Furthermore, a connector is welded to one end of the connecting pipe, and an air intake pipe is threaded onto the outer side of the connector.

[0008] Furthermore, a main shaft is rotatably connected within the central through hole of the bearing seat, and an axial air supply channel is provided on the main shaft.

[0009] Furthermore, a connecting hole is provided at the top of the spindle, and an air hole is provided on the bottom side wall of the spindle. The air hole is connected to the connector through the inner cavity of the connecting pipe.

[0010] Furthermore, an annular limiting groove is provided on the upper part of the inner wall of the bearing seat, an annular supporting column is provided in the annular limiting groove, and a first rubber oil seal is provided at the bottom of the annular supporting column.

[0011] Furthermore, a second rubber oil seal is provided between the contact surfaces of the spindle and the connecting pipe to seal the gap between the spindle and the connecting pipe.

[0012] Furthermore, the bottom of the connecting pipe is threaded with a top cover, and a pressure ring is provided inside the top cover for pressing the sealing element.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up a second rubber oil seal, a first rubber oil seal, and a pressure ring, the second rubber oil seal directly seals the dynamic gap between the main shaft and the connecting pipe. Combined with the radial sealing of the upper part of the first rubber oil seal and the pressure ring and bottom sealing of the upper cover, an upper-middle-lower sealing system is formed, effectively blocking gas leakage paths. By setting up a joint and an air inlet pipe, with the joint and air inlet pipe connected by threads, there is no loose gap at the static connection, preventing gas leakage from fixed locations. By setting up an annular support column, radial positioning is provided to prevent eccentric shaking during main shaft rotation and reduce wear on the seals. With the first and second rubber oil seals, the contact surfaces between the seals and the main shaft are precision machined, resulting in low frictional resistance and low heat generation during rotation, meeting the long-term operating requirements of the mixer's main shaft at high speed. By setting up an air inlet pipe, a joint, an upper cover, and a connecting pipe, with the air inlet pipe threaded to the joint and the upper cover threaded to the connecting pipe, seals such as rubber oil seals and pressure rings can be disassembled and replaced individually without requiring a complete disassembly mechanism, reducing maintenance difficulty and downtime. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the internal structure of this utility model;

[0018] Figure 3 This is a front cross-sectional view of the present invention.

[0019] In the diagram: 1. Shaft seat; 2. Mounting hole; 3. Threaded hole; 4. Press-fit screw; 5. Connecting pipe; 6. Joint; 7. Inlet pipe; 8. Annular limiting groove; 9. Annular support column; 10. Main shaft; 11. First rubber oil seal; 12. Second rubber oil seal; 13. Connecting hole; 14. Top cover; 15. Pressure ring; 16. Air supply channel; 17. Air hole. Detailed Implementation

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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. 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.

[0023] Please see Figure 1-3This utility model provides a technical solution for a mixer air-filling sealing mechanism: A mixer air-filling sealing mechanism includes a shaft seat 1, with a mounting hole 2 at the top and several threaded holes 3 at the bottom. A rivet screw 4 is threaded into each threaded hole 3, passing through the shaft seat 1 and pressing against the end of a connecting pipe 5 to form a sealed and fixed connection. A connector 6 is welded to one end of the connecting pipe 5. By setting the connector 6 and an air inlet pipe 7, the connector 6 and the air inlet pipe 7 are threaded together, ensuring no loosening gaps at the static connection point and preventing gas leakage from the fixed part. The outer side of the connector 6... The machine is connected by a threaded air intake pipe 7. The air intake pipe 7, connector 6, top cover 14 and connecting pipe 5 are connected by a threaded connection. The air intake pipe 7 is connected to the connector 6 by a threaded connection. The top cover 14 is connected to the connecting pipe 5 by a threaded connection. Seals such as rubber oil seals and pressure rings 15 can be disassembled and replaced separately without the need for an overall disassembly mechanism, which reduces maintenance difficulty and downtime. The main shaft 10 is rotatably connected in the central through hole of the shaft seat 1. The main shaft 10 has an axial air supply channel 16. The top of the main shaft 10 has a connecting hole 13. The bottom side wall of the main shaft 10 has an air hole 17. The air hole 17 is connected to the connector 6 through the inner cavity of the connecting pipe 5.

[0024] An annular limiting groove 8 is provided on the upper part of the inner wall of the shaft seat 1. An annular support column 9 is provided in the annular limiting groove 8. By providing the annular support column 9, radial positioning is provided to avoid eccentric shaking when the main shaft 10 rotates and to reduce wear of the seals. A first rubber oil seal 11 is provided at the bottom of the annular support column 9. By providing the first rubber oil seal 11 and the second rubber oil seal 12, the contact surface between the seals and the main shaft 10 is precision machined, resulting in low frictional resistance and low heat generation during rotation, which can meet the long-term operation requirements of the high-speed rotation of the mixer main shaft 10. The contact surface between the main shaft 10 and the connecting pipe 5 A second rubber oil seal 12 is provided between the main shaft 10 and the connecting pipe 5. By setting the second rubber oil seal 12, the first rubber oil seal 11 and the pressure ring 15, the second rubber oil seal 12 directly seals the dynamic gap between the main shaft 10 and the connecting pipe 5. It works in conjunction with the upper radial seal of the first rubber oil seal 11 and the pressure ring 15 and the bottom of the upper cover 14 to form an upper-middle-lower sealing system, which effectively blocks the gas leakage path and is used to seal the gap between the main shaft 10 and the connecting pipe 5. The bottom of the connecting pipe 5 is threaded to the upper cover 14. The pressure ring 15 is provided inside the upper cover 14 and is used to press the seal.

[0025] In use, this invention is fixed to the mixer via the mounting hole 2, and the connecting hole 13 of the main shaft 10 is connected to the mixing component of the mixer. External air enters the inner cavity of the connecting pipe 5 through the air inlet pipe 7 and connector 6, then enters the air delivery channel 16 of the main shaft 10 via the air hole 17, and is finally delivered to the mixing chamber. During the rotation of the main shaft 10, the second rubber oil seal 12 seals the dynamic gap between the main shaft 10 and the connecting pipe 5 to prevent gas leakage. Simultaneously, the first rubber oil seal 11 provides additional radial sealing, while the upper cover 14 and pressure ring 15 provide clamping force to the lower seals, further enhancing the reliability of the seal. When the seals need to be replaced, only the upper cover 14 needs to be unscrewed to replace the first rubber oil seal 11, the second rubber oil seal 12, and the pressure ring 15 individually, without disassembling the entire mixing shaft system, greatly reducing maintenance difficulty and downtime.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas-filling sealing mechanism for a mixer, comprising a shaft seat (1), characterized in that: The top end of the bearing seat (1) is provided with a mounting hole (2), and the bottom end of the bearing seat (1) is provided with a plurality of threaded holes (3). A press screw (4) is threadedly connected in the threaded hole (3). The press screw (4) passes through the bearing seat (1) and presses the end of the connecting pipe (5) to form a sealed and fixed connection.

2. An aerator seal mechanism for a blender as defined in claim 1, wherein: One end of the connecting pipe (5) is welded with a connector (6), and the outer side of the connector (6) is threaded with an air intake pipe (7).

3. The air-filling and sealing mechanism for a mixer according to claim 2, characterized in that: The main shaft (10) is rotatably connected in the central through hole of the bearing seat (1), and the main shaft (10) has an axial gas delivery channel (16).

4. The air-filling and sealing mechanism for a mixer according to claim 3, characterized in that: The top of the spindle (10) is provided with a connecting hole (13), and the bottom side wall of the spindle (10) is provided with an air hole (17). The air hole (17) is connected to the connector (6) through the inner cavity of the connecting pipe (5).

5. The air-filling and sealing mechanism for a mixer according to claim 1, characterized in that: The upper part of the inner wall of the bearing seat (1) is provided with an annular limiting groove (8), the annular limiting groove (8) is provided with an annular support column (9), and the bottom of the annular support column (9) is provided with a first rubber oil seal (11).

6. The air-filling and sealing mechanism for a mixer according to claim 3, characterized in that: A second rubber oil seal (12) is provided between the contact surfaces of the main shaft (10) and the connecting pipe (5) to seal the gap between the main shaft (10) and the connecting pipe (5).

7. The air-filling and sealing mechanism for a mixer according to claim 1, characterized in that: The bottom of the connecting pipe (5) is threadedly connected to a top cover (14), and a pressure ring (15) is provided inside the top cover (14). The pressure ring (15) is used to press the seal.

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