Mechanical sealing device of sterilizer

Abstract

The utility model provides a mechanical sealing device of a sterilizer. The mechanical sealing device comprises a shaft sleeve, a material side static ring, a material side movable ring, a mounting flange, a transmission seat, an atmosphere side movable ring, an atmosphere side static ring and an elastic piece. Wherein the shaft sleeve is fixedly sleeved on the main shaft; the material side static ring is fixed on the shaft sleeve; the shaft sleeve is sleeved with the material side moving ring, and the material side moving ring is in sliding friction fit with the material side static ring; the mounting flange is mounted on a frame of the sterilizer; the transmission seat is sleeved on the shaft sleeve; the atmosphere side moving ring is sleeved on the shaft sleeve; the atmosphere side static ring is fixed on the shaft sleeve, and the atmosphere side static ring is in sliding friction fit with the atmosphere side moving ring; and the elastic pieces are arranged between the mounting flange and the material side moving ring and between the transmission seat and the atmosphere side moving ring. According to the mechanical sealing device of the sterilizer, the friction fit structure of the movable ring and the static ring is arranged on the material side and the atmosphere side, double sealing guarantee is formed, and therefore the risk of material leakage is greatly reduced, and the cleanliness and safety of the production environment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilization devices, in particular to a mechanical sealing device for a sterilizer. Background Art

[0002] During the processing of traditional Chinese medicine, the powder needs to be sterilized, and the sterilization process is usually completed in a sterilizer. The sterilizer sterilizes the powder evenly by stirring it. Due to the relative movement of the rotating shaft, it is relatively difficult to seal, so mechanical seals are often used.

[0003] The conventional mechanical seal structure is an end face seal. The static ring and dynamic ring of the end face seal form a pair of friction pairs, and the function of the friction pair is to prevent medium leakage. Since drug powder leakage will cause great losses, conventional single-end face mechanical seals cannot meet the needs. In addition, the mixing shaft of the sterilizer has a long span and high load, which is prone to radial runout, damaging the dynamic and static rings of the mechanical seal and causing seal failure. Utility Model Content

[0004] The utility model aims to provide a mechanical seal device for a sterilizer, so as to solve the technical problem that the traditional single-end mechanical seal is easily damaged by the radial runout of the stirring shaft of the sterilizer, thus causing leakage of medicine powder.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a mechanical sealing device for a sterilizer, the mechanical sealing device for a sterilizer comprises:

[0006] A shaft sleeve, wherein the shaft sleeve is sleeved and fixed on the main shaft;

[0007] A material side static ring, wherein the material side static ring is fixed on the shaft sleeve;

[0008] A material side moving ring, the material side moving ring is sleeved on the shaft sleeve, and the material side moving ring and the material side static ring are in sliding friction cooperation;

[0009] A mounting flange, wherein the mounting flange is mounted on a sterilizer frame;

[0010] A transmission seat, which is sleeved on the shaft sleeve and located on the other side of the mounting flange;

[0011] An atmosphere side dynamic ring, the atmosphere side dynamic ring is sleeved on the shaft sleeve;

[0012] An atmosphere-side static ring, the atmosphere-side static ring is fixed on the shaft sleeve, and the atmosphere-side static ring and the atmosphere-side dynamic ring are in sliding and frictional cooperation;

[0013] An elastic member is arranged between the mounting flange and the material-side dynamic ring and between the transmission seat and the atmosphere-side dynamic ring.

[0014] In one embodiment, the elastic members are evenly arranged along the circumference of the mounting flange and the transmission seat.

[0015] In one embodiment, it also includes a cavity, which is sleeved on the outside of the atmospheric side dynamic ring and the atmospheric side static ring, one side of the cavity is sealed to the mounting flange, and the other side of the cavity is sealed to the atmospheric side static ring, and a closed lubrication cavity is formed between the inner side of the cavity and the mounting flange and the atmospheric side static ring, and the lubrication cavity is filled with lubricant.

[0016] In one embodiment, it also includes a bearing seat and a bearing disposed in the bearing seat, the bearing seat is tightly attached to the cavity, and the bearing sleeve is disposed on the shaft sleeve.

[0017] In one embodiment, a retaining ring is further included, wherein the retaining ring is installed on the shaft sleeve and is located at both ends of the bearing.

[0018] In one embodiment, a skeleton oil seal is further included, and the skeleton oil seal is arranged on a side of the retaining ring away from the bearing.

[0019] In one embodiment, a stop washer is further included, wherein the stop washer is fixed on the shaft sleeve and is located at one end of the bearing seat.

[0020] In one embodiment, it further comprises a clamping portion, wherein the clamping portion comprises a clamping seat, a clamping block and a clamping bolt;

[0021] The clamping seat is installed on the sterilizer frame, and a matching groove is arranged on the inner side of the clamping seat; the clamping block is sleeved on the shaft sleeve, the cross section of the clamping block is wedge-shaped, and the clamping block is slidably matched in the matching groove of the clamping seat; the clamping bolt is arranged on the clamping block and the clamping seat.

[0022] One or more of the above technical solutions in the embodiments of the present utility model have at least the following technical effects or advantages:

[0023] 1. Double sealing protection: The device is equipped with a friction fit structure of a dynamic ring and a static ring on both the material side and the atmosphere side to form a double sealing protection. This design ensures that even if the sealing surface on one side fails due to wear or other reasons, the sealing surface on the other side can still effectively isolate the material from the atmosphere, thereby greatly reducing the risk of material leakage and ensuring the cleanliness and safety of the production environment.

[0024] 2. High-efficiency isolation performance: Through the close cooperation of the static ring on the material side and the dynamic ring on the material side, as well as the static ring on the atmosphere side and the dynamic ring on the atmosphere side, this device achieves high-efficiency isolation between the material and the atmosphere. This isolation not only effectively prevents the material from leaking outward, but also avoids the external atmosphere from contaminating the material, ensuring the purity and efficiency of the sterilization process.

[0025] 3. Elastic compensation mechanism: The device is equipped with elastic parts between the moving ring on the material side and the mounting flange, and between the moving ring on the atmosphere side and the transmission seat. These elastic parts can automatically compensate for the slight deformation or displacement caused by factors such as temperature and pressure during the operation of the equipment, thereby maintaining the close fit of the sealing surface and ensuring the lasting and stable sealing effect.

[0026] To sum up, the mechanical sealing device of the sterilizer described in this patent achieves an efficient, stable and reliable sealing effect through its unique design and structure, providing a strong guarantee for the safe and efficient operation of the sterilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic structural diagram of a mechanical sealing device for a sterilizer provided in an embodiment of the utility model.

[0029] The respective reference numerals are as follows:

[0030] 1. Spindle; 2. Bushing; 3. Static ring on the material side; 4. Dynamic ring on the material side; 5. Elastic part; 6. Transmission seat; 7. Dynamic ring on the atmosphere side; 8. Static ring on the atmosphere side; 9. Skeleton oil seal; 10. Bearing; 11. Retaining ring; 12. Cavity; 13. Bearing seat; 14. Stop gasket; 15. Clamping seat; 16. Clamping block; 17. Clamping bolt; 18. Mounting flange. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] See also Figure 1 The embodiment of the present application provides a mechanical sealing device for a sterilizer, comprising a sleeve 2, a material side static ring 3, a material side dynamic ring 4, a mounting flange 18, a transmission seat 6, an atmosphere side dynamic ring 7, an atmosphere side static ring 8, and an elastic member 5. Among them, the sleeve 2 is sleeved and fixed on the main shaft 1; the material side static ring 3 is fixed on the sleeve 2; the material side dynamic ring 4 is sleeved on the sleeve 2, and the material side dynamic ring 4 and the material side static ring 3 are slidably friction-matched; the mounting flange 18 is mounted on the sterilizer frame; the transmission seat 6 is sleeved on the sleeve 2 and is located on the other side of the mounting flange 18; the atmosphere side dynamic ring 7 is sleeved on the sleeve 2; the atmosphere side static ring 8 is fixed on the sleeve 2, and the atmosphere side static ring 8 and the atmosphere side dynamic ring 7 are slidably friction-matched; the elastic member 5 is arranged between the mounting flange 18 and the material side dynamic ring 4 and between the transmission seat 6 and the atmosphere side dynamic ring 7.

[0036] The mounting flange 18 is installed on the sterilizer frame, with the material bin on its left and the atmosphere on its right. The static ring 3 on the material side is fixed on the shaft sleeve 2 and rotates with the shaft sleeve 2 and the shaft. When rotating, the dynamic ring 4 on the material side is pressed against the static ring 3 on the material side by the spring to form a material side seal. The static ring 8 on the atmosphere side is fixed on the shaft sleeve 2 and rotates with the shaft sleeve 2 and the shaft. When rotating, the dynamic ring 7 on the atmosphere side is pressed against the static ring 8 on the atmosphere side by the spring to form an atmosphere side seal.

[0037] In one embodiment, the elastic members 5 are evenly arranged along the circumference of the mounting flange 18 and the transmission seat 6. The evenly distributed elastic members 5 (specifically, springs) can make the force exerted by the elastic members 5 on the material-side dynamic ring 4 or the atmosphere-side dynamic ring 7 evenly directed toward the static ring, so that the pressure at various locations between the dynamic ring and the static ring is uniform, so that the sealing effect at various locations of the mechanical sealing mechanism is consistent.

[0038] In one embodiment, it further includes a cavity 12, which is sleeved outside the atmosphere side dynamic ring 7 and the atmosphere side static ring 8, one side of the cavity 12 is sealed and connected to the mounting flange 18, and the other side of the cavity 12 is sealed and connected to the atmosphere side static ring 8, and a closed lubrication cavity is formed between the inner side of the cavity 12 and the mounting flange 18 and the atmosphere side static ring 8, and the lubrication cavity is filled with lubricant. The lubricant can lubricate the friction surface between the atmosphere side dynamic ring 7 and the atmosphere side static ring 8.

[0039] In one embodiment, it also includes a bearing seat 13 and a bearing 10 disposed in the bearing seat 13, the bearing seat 13 is close to the cavity 12, and the bearing 10 is sleeved on the shaft sleeve 2. The inner ring of the bearing 10 is fixed on the shaft sleeve 2, the outer ring is fixed on the bearing seat 13, and the retaining ring 11 is installed on the shaft sleeve 2. By providing the bearing 10, the radial runout of the shaft is effectively reduced, and the dynamic and static rings are prevented from being damaged due to the radial runout of the shaft.

[0040] In one embodiment, a retaining ring 11 is further included, which is mounted on the shaft sleeve 2 and is located at both ends of the bearing 10. The retaining ring 11 can block the bearing 10 to prevent the bearing 10 from axial movement.

[0041] In one embodiment, a skeleton oil seal 9 is further included, and the skeleton oil seal 9 is arranged on a side of the retaining ring 11 away from the bearing 10. The skeleton oil seal 9 can prevent the bearing 10 from leaking oil.

[0042] In one embodiment, a stop washer 14 is further included, which is fixed to the shaft sleeve 2 and is located at one end of the bearing seat 13. The stop washer 14 is fixed to the shaft sleeve 2 to prevent the cavity 12 and the bearing seat 13 from axial movement during transportation, and can be removed after installation.

[0043] In one embodiment, a clamping part is further included, and the clamping part includes a clamping seat 15, a clamping block 16 and a clamping bolt 17; the clamping seat 15 is installed on the sterilizer frame, and a matching groove is arranged on the inner side of the clamping seat 15; the clamping block 16 is sleeved on the shaft sleeve 2, and the cross section of the clamping block 16 is wedge-shaped, and the clamping block 16 is slidably matched in the matching groove of the clamping seat 15; the clamping bolt 17 is arranged on the clamping block 16 and the clamping seat 15. By tightening the clamping bolt 17, the clamping block 16 moves toward the clamping seat 15, and then the clamping block 16 presses the shaft sleeve 2, so that the shaft sleeve 2 is pressed onto the main shaft 1 by the clamping block 16.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical sealing device for a sterilizer, characterized in that: The sterilizer mechanical sealing device comprises: A shaft sleeve, wherein the shaft sleeve is sleeved and fixed on the main shaft; A material side static ring, wherein the material side static ring is fixed on the shaft sleeve; A material side moving ring, the material side moving ring is sleeved on the shaft sleeve, and the material side moving ring and the material side static ring are in sliding friction cooperation; A mounting flange, wherein the mounting flange is mounted on a sterilizer frame; A transmission seat, which is sleeved on the shaft sleeve and located on the other side of the mounting flange; An atmosphere side dynamic ring, the atmosphere side dynamic ring is sleeved on the shaft sleeve; An atmosphere-side static ring, the atmosphere-side static ring is fixed on the shaft sleeve, and the atmosphere-side static ring and the atmosphere-side dynamic ring are in sliding and frictional cooperation; An elastic member is arranged between the mounting flange and the material-side dynamic ring and between the transmission seat and the atmosphere-side dynamic ring.

2. A mechanical sealing device for a sterilizer according to claim 1, characterized in that: The elastic members are evenly arranged along the circumference of the mounting flange and the transmission seat.

3. A mechanical sealing device for a sterilizer according to claim 1, characterized in that: It also includes a cavity, which is sleeved on the outside of the atmospheric side dynamic ring and the atmospheric side static ring. One side of the cavity is sealed to the mounting flange, and the other side of the cavity is sealed to the atmospheric side static ring. A closed lubrication cavity is formed between the inner side of the cavity and the mounting flange and the atmospheric side static ring, and the lubrication cavity is filled with lubricant.

4. A mechanical sealing device for a sterilizer according to claim 3, characterized in that: It also includes a bearing seat and a bearing arranged in the bearing seat, the bearing seat is tightly attached to the cavity, and the bearing sleeve is arranged on the shaft sleeve.

5. A mechanical sealing device for a sterilizer according to claim 4, characterized in that: It also includes a retaining ring, which is installed on the shaft sleeve and is located at both ends of the bearing.

6. A mechanical sealing device for a sterilizer according to claim 5, characterized in that: It also includes a skeleton oil seal, which is arranged on a side of the retaining ring away from the bearing.

7. A mechanical sealing device for a sterilizer according to claim 4, characterized in that: It also includes a stop washer, which is fixed on the shaft sleeve and is located at one end of the bearing seat.

8. The mechanical sealing device of a sterilizer according to claim 1, characterized in that: It also includes a clamping portion, which includes a clamping seat, a clamping block and a clamping bolt; The clamping seat is installed on the sterilizer frame, and a matching groove is arranged on the inner side of the clamping seat; the clamping block is sleeved on the shaft sleeve, the cross section of the clamping block is wedge-shaped, and the clamping block is slidably matched in the matching groove of the clamping seat; the clamping bolt is arranged on the clamping block and the clamping seat.

Images