A detachable combined mechanical seal structure of a bottom stirring reaction kettle

Abstract

The utility model relates to mechanical seal structure technical field, the utility model provides a kind of bottom stirring reaction kettle detachable combined mechanical seal structure, including reaction kettle bottom and stirring shaft, the lower end surface center of reaction kettle bottom is provided with the installation slot for the bottom end of stirring shaft to pass out, the bottom end of stirring shaft is equipped with spline shaft, installation slot inside is equipped with the mechanical seal for sealing the end of stirring shaft to pass out. The bottom stirring reaction kettle detachable combined mechanical seal structure, overall design scientific and reasonable, fully considers the sealing performance, structural stability, dismounting maintenance convenience and the demand of adapting complex working condition.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal structure technology, specifically to a detachable and combinable mechanical seal structure for a bottom-stirred reactor. Background Technology

[0002] Bottom-stirred reactors are widely used in chemical, pharmaceutical, and food industries for various liquid-phase or solid-liquid-phase reaction processes. Their core function is to achieve uniform mixing of materials through a bottom stirring system, thereby improving reaction efficiency and ensuring the stability of reaction conditions. With the increasing demands for improved sealing performance, high-temperature and high-pressure environmental adaptability, and ease of maintenance in industrial production, the mechanical seal structure of bottom-stirred reactors is also constantly evolving and improving.

[0003] However, existing mechanical seal structures for bottom-stirred reactors still have many shortcomings in practical applications. Firstly, traditional sealing structures often use a single sealing ring or multiple layers of seals, but these are prone to failure under high temperature and pressure conditions, leading to media leakage and seriously affecting reaction safety and production efficiency. Secondly, many existing sealing structures are cumbersome to disassemble and maintain, requiring the removal of multiple parts, increasing downtime and maintenance costs. Thirdly, some sealing structures are prone to incomplete sealing or damage under high speed or severe vibration conditions, affecting the long-term stable operation of the equipment.

[0004] Therefore, this solution proposes a detachable and modular mechanical seal structure for a bottom-stirred reactor to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a detachable and combinable mechanical seal structure for a bottom-stirred reactor.

[0006] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows: A detachable and modular mechanical seal structure for a bottom-stirred reactor includes a reactor bottom and a stirring shaft. A mounting groove is provided at the center of the lower end face of the reactor bottom for the bottom end of the stirring shaft to pass through. A splined shaft is mounted at the bottom end of the stirring shaft. A mechanical seal for sealing the protruding end of the stirring shaft is installed inside the mounting groove. The mechanical seal includes: Sealing rings: There are three concentrically distributed sealing rings inside the top groove wall of the mounting groove; Upper clamping gasket; pressed against the top wall of the mounting groove, and the upper end face of the upper clamping gasket is provided with three concentrically distributed annular snap-fit ​​teeth that are correspondingly snapped into the three sealing grooves; Snap-fit ​​bearings: Snap-fit ​​bearings are positioned opposite the top of the splined shaft; Lower clamping shim: The lower clamping shim is pressed against the lower end face of the snap-fit ​​bearing; Clamping assembly: The clamping assembly is installed at the lower port of the mounting slot and clamps against the lower end face of the lower clamping pad.

[0007] Preferably, the snap-fit ​​bearing includes: Outer ring: The outer ring is installed on the inner wall of the mounting groove; Inner circle: The inner circle is located inside the outer circle; Rollers: Rollers are evenly distributed between the outer and inner rings; Snap-fit ​​base: The inner ring of the snap-fit ​​base is specifically designed as a stepped shape and is supported on the lower end face of the stirring shaft, and the inner wall of the lower ring of the snap-fit ​​base is snapped onto the outside of the spline shaft.

[0008] Preferably, the upper and lower end faces of the gap between the outer ring and the inner ring of the snap-fit ​​bearing are respectively provided with a first end cap and a second end cap for sealing.

[0009] Preferably, the clamping assembly includes: Flange ring: The flange ring is positioned at the lower end of the mounting groove by a ring of fixing bolts. Base: The base is installed on the inner ring of the flange ring. Annular clamping boss: The annular clamping boss is installed on the upper end face of the base, and the upper end face of the annular clamping boss is pressed against the bottom of the lower clamping pad.

[0010] Preferably, the bottom end of the splined shaft protrudes through the mechanical seal and connects to an external power source.

[0011] The beneficial effects of this utility model are reflected in: The detachable and modular mechanical seal structure of this bottom-stirred reactor features a scientifically designed overall structure that fully considers sealing performance, structural stability, ease of disassembly and maintenance, and adaptability to complex operating conditions. Through the tight fit of three sealing rings and the mounting groove, combined with multi-layer compression gaskets and snap-fit ​​bearings, the reliability of the seal and the coaxiality of the shaft are ensured, significantly improving the sealing effect and mechanical stability of the equipment. The splined shaft structure not only guarantees the stability of power transmission but also facilitates the disassembly and maintenance of the seals, greatly reducing maintenance costs and time. Multiple sealing protection designs effectively prevent media leakage, improving the safety and service life of the equipment. The compact overall structure and uniform stress distribution make it suitable for high-temperature, high-pressure, and corrosive environments, and it is widely applicable to reactor equipment in the chemical, pharmaceutical, and food industries, offering significant economic and social benefits. Attached Figure Description

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the mechanical seal of this utility model; Figure 3This is a schematic diagram of a half-section of the snap-fit ​​bearing of this utility model; Figure 4 This is a schematic diagram of the clamping assembly of this utility model; Explanation of reference numerals in the attached figures: 1. Bottom of the reactor; 2. Stirring shaft; 3. Splined shaft; 4. Mechanical seal; 11. Mounting slot; 41. Sealing ring; 42. Upper clamping gasket; 43. First end cap; 44. Snap-fit ​​bearing; 45. Second end cap; 46. Lower clamping gasket; 47. Clamping assembly; 421. Ring-shaped snap-fit ​​teeth; 441. Outer ring; 442. Inner ring; 443. Roller; 444. Snap-fit ​​bearing platform; 471. Base; 472. Flange ring; 473. Annular clamping boss; 474. Fixing bolt. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0014] It should be noted that if the utility model embodiment involves directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0015] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

[0016] Please refer to the instruction manual appendix. Figures 1-4 This utility model provides a detachable and modular mechanical seal structure for a bottom-stirred reactor. The bottom 1 of the reactor is provided with a centrally located mounting groove 11. The groove is located at the center of the bottom end of the reactor, and three sealing grooves 111 are formed at the top of the inner groove to accommodate the sealing ring 41.

[0017] A splined shaft 3 is mounted at the bottom of the stirring shaft 2. After passing through the mechanical seal 4, the splined shaft 3 is connected to an external power source to transmit power. The splined structure ensures the transmission of torque and the ease of disassembly.

[0018] The mechanical seal 4 consists of a sealing ring 41, an upper clamping gasket 42, a snap-fit ​​bearing 44, a lower clamping gasket 46, and a clamping assembly 47.

[0019] The sealing ring 41 consists of three concentrically distributed sealing rings, which are embedded in the three sealing grooves 111 on the top wall of the mounting groove 11. The sealing ring is made of high-temperature resistant and corrosion-resistant material and has good sealing performance.

[0020] The upper clamping gasket 42 is located above the sealing ring 41 and is pressed against the top wall of the mounting groove 11. Its upper end face is provided with three annular snap teeth 421, which correspond to the sealing groove 111 inside the sealing ring 41, so as to fix the sealing ring and seal and tighten it.

[0021] The snap-fit ​​bearing 44 is mounted on the upper clamping washer 42 and engages with the splined end of the stirring shaft 2 via a stepped snap-fit ​​base 444. The outer ring 441 is fixed to the inner wall of the mounting groove 11, the inner ring 442 is distributed inside the outer ring 441, and rollers 443 are evenly distributed between them, providing support and cushioning. The stepped design at the bottom of the snap-fit ​​base 444 supports the bottom end of the stirring shaft 2, and the inner ring wall snaps onto the outside of the splined shaft 3, ensuring the coaxiality of the bearing and the splined shaft, and improving the overall structural stability and the accuracy of the transmission force.

[0022] The upper and lower end faces between the outer ring 441 and the inner ring 442 inside the snap-fit ​​bearing 44 are respectively sealed with a first end cover 43 and a second end cover 45 to prevent leakage of the sealing medium and ensure the sealing performance and reliability of the seal.

[0023] The clamping assembly 47 consists of a flange ring 472, a base 471, and an annular clamping boss 473.

[0024] The flange ring 472 is fixed to the lower end of the mounting groove 11 by a ring of fixing bolts 474, providing a support base for clamping force.

[0025] The base 471 is installed on the inner ring of the flange ring 472, and an annular pressing boss 473 is provided on it.

[0026] Installed on the upper surface of the base 471, it is pressed against the bottom of the lower pressure pad 46 to ensure uniform pressure on the seal and enhance the sealing effect.

[0027] After the bottom end of the splined shaft 3 passes through the mechanical seal 4, it connects to an external power source such as a motor to transmit power and achieve the stirring function. The mechanical seal structure ensures a leak-free seal during stirring and is suitable for harsh working conditions such as high temperature and high pressure.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A detachable and modular mechanical seal structure for a bottom-stirred reactor, comprising a reactor bottom (1) and a stirring shaft (2), characterized in that, The bottom surface (1) of the reactor has a mounting groove (11) at its center for the bottom end of the stirring shaft (2) to pass through. A spline shaft (3) is mounted on the bottom end of the stirring shaft (2). A mechanical seal (4) for sealing the end of the stirring shaft (2) is installed inside the mounting groove (11). The mechanical seal (4) includes: Sealing ring (41): The sealing ring (41) has three concentric rings distributed inside the top groove wall of the mounting groove (11) which is provided with three concentric sealing grooves (111); Upper clamping gasket (42); pressed against the top wall of the mounting groove (11), and the upper end face of the upper clamping gasket (42) is provided with three concentrically distributed annular snap-fit ​​teeth (421) that are correspondingly snapped into the three sealing grooves (111); Snap-fit ​​bearing (44): The snap-fit ​​bearing (44) is connected to the top end of the splined shaft (3); Lower clamping shim (46): The lower clamping shim (46) is pressed against the lower end face of the snap-fit ​​bearing (44); Clamping assembly (47): The clamping assembly (47) is installed at the lower port of the mounting groove (11) and clamped to the lower end face of the lower clamping pad (46).

2. The detachable and modular mechanical seal structure for a bottom-stirred reactor according to claim 1, characterized in that, The snap-fit ​​bearing (44) includes: Outer ring (441): The outer ring (441) is installed on the inner wall of the mounting groove (11); Inner ring (442): The inner ring (442) is distributed inside the outer ring (441); Roller (443): The roller (443) is evenly distributed between the outer ring (441) and the inner ring (442); Snap-fit ​​support (444): The inner ring of the snap-fit ​​support (444) is specifically set in a stepped shape and is supported on the lower end face of the stirring shaft (2), and the inner wall of the lower ring of the snap-fit ​​support (444) is snapped on the outside of the spline shaft (3).

3. The detachable and modular mechanical seal structure for a bottom-stirred reactor according to claim 2, characterized in that, The upper and lower end faces of the gap between the outer ring (441) and the inner ring (442) of the snap-fit ​​bearing (44) are respectively provided with a first end cap (43) and a second end cap (45) for sealing.

4. The detachable and modular mechanical seal structure for a bottom-stirred reactor according to claim 1, characterized in that, The clamping assembly (47) includes: Flange ring (472): The flange ring (472) is positioned at the lower port of the mounting groove (11) by a ring of fixing bolts (474); Base (471): The base (471) is mounted on the inner ring of the flange ring (472): Annular pressing boss (473): The annular pressing boss (473) is installed on the upper surface of the base (471), and the upper surface of the annular pressing boss (473) is pressed against the bottom of the lower pressing pad (46).

5. The detachable and modular mechanical seal structure for a bottom-stirred reactor according to claim 1, characterized in that, The bottom end of the splined shaft (3) extends through the mechanical seal (4) and connects to the external power source.

Images