Double-end-face mechanical sealing device with buffering function

Abstract

The double-end-face mechanical sealing device with the buffering function comprises a connecting end base, fixing bases are arranged at the two ends of the connecting end base respectively, connecting cavities are formed in the ends, close to the connecting end base, of the two fixing bases respectively, and the inner walls of the two connecting cavities are in sliding connection with the outer walls of the two ends of the connecting end base respectively. A plurality of connecting grooves are annularly formed in the two ends of the connecting end base, buffer springs are arranged in the connecting grooves, one end of each buffer spring abuts against the inner wall of the corresponding connecting groove, and the other end of each buffer spring abuts against the inner wall of the corresponding connecting cavity. By combining the structural design of the double-end-face sealing device, the problems that mechanical resonance is continuously generated at the connecting position in the using process, and the flexible buffering effect of the outer structure of the double-end-face sealing device is poor are fully solved, and therefore the service life of the double-end-face sealing device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, specifically a double-end mechanical seal device with a buffering function. Background Technology

[0002] The principle of double-end mechanical seals is basically the same as that of single-end mechanical seals. Both rely on the end faces (friction pairs) perpendicular to the axis of rotation to maintain contact and relative sliding under the action of fluid pressure, the elastic force of the compensation mechanism, and the cooperation of auxiliary seals to form a device to prevent fluid leakage. When the double-end mechanical seal structure is working, under the combined force caused by fluid pressure (medium pressure) and the elastic force of the elastic element, an appropriate specific pressure (tightening force) is generated on the end face of the sealing ring, so that the two contact end faces (dynamic ring and stationary ring end faces) are tightly fitted together, and a very thin liquid film is maintained in the very small gap between the two end faces, thereby achieving the purpose of sealing.

[0003] Most existing double-end mechanical seal devices have simple functions. During use, mechanical resonance will continuously occur at the connection point, resulting in poor flexibility and buffering effect of the external structure of many existing double-end mechanical seal devices, thus reducing the service life of the double-end mechanical seal devices. Summary of the Invention

[0004] The purpose of this invention is to provide a double-end mechanical seal device with a buffering effect, in order to solve the problem mentioned in the background art that most double-end mechanical seal devices are simple in function and have poor buffering effect due to the continuous mechanical resonance at the connection during use, which leads to a reduction in the service life of the double-end mechanical seal device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-end mechanical seal device with a buffering function, comprising a connecting end seat, wherein fixed seats are provided at both ends of the connecting end seat, and a connecting cavity is provided at one end of each of the two fixed seats near the connecting end seat, and the inner walls of the two connecting cavities are slidably connected to the outer walls of both ends of the connecting end seat, and a plurality of connecting grooves are provided in a ring at both ends of the connecting end seat, wherein a buffer spring is provided in the plurality of connecting grooves, one end of the buffer spring abuts against the inner wall of the connecting groove, and the other end of the buffer spring abuts against the inner wall of the connecting cavity.

[0006] Preferably, the outer wall of the connecting end seat is provided with a plurality of threaded holes distributed in a ring, and a guide screw is threaded into the threaded hole.

[0007] Preferably, the surface of the fixed base has multiple guide openings arranged in a ring near the end of the connecting end, and the number of guide openings is the same as the number of guide screws.

[0008] Preferably, the guide screw is movable within the guide opening.

[0009] Preferably, the connecting cavity is adapted to the connecting end seat, and the buffer spring is adapted to the connecting groove.

[0010] Preferably, a groove is provided in the connecting cavity, a sealing ring is installed in the groove, and the outer wall of the sealing ring is in contact with the outer wall surface of the connecting end seat.

[0011] Beneficial effects

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0013] The structural design of this utility model effectively solves the problems of continuous mechanical resonance at the connection point during use and poor buffering effect of the external structure of the double-end sealing device, thereby increasing the service life of the double-end sealing device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the connecting end seat structure of this utility model.

[0017] The correspondence between the labels and component names in the attached figures is as follows:

[0018] 1. Connecting end seat; 2. Fixing seat; 3. Buffer spring; 4. Sealing ring; 5. Guide screw; 11. Connecting groove;

[0019] 12. Threaded hole; 21. Connecting cavity; 22. Guide opening; 23. Groove. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figure 1-3 This is a schematic diagram of a preferred embodiment of the present invention, showing a double-end mechanical seal device with a buffering function. In this embodiment, the double-end mechanical seal device with a buffering function includes a connecting end seat 1, with fixed seats 2 at both ends of the connecting end seat 1. Each fixed seat 2 has a connecting cavity 21 near one end of the connecting end seat 1, and the inner walls of the two connecting cavities 21 are slidably connected to the outer walls of both ends of the connecting end seat 1. Multiple connecting grooves 11 are annularly distributed at both ends of the connecting end seat 1, and buffer springs 3 are installed within the multiple connecting grooves 11. One end of the buffer spring 3 abuts against the inner wall of the connecting groove 11, and the other end of the buffer spring 3 abuts against the inner wall of the connecting cavity 21. Based on the structural design of this invention, by connecting the connecting end seat 1 between the two fixed seats 2 and installing buffer springs 3 between the connecting end seat 1 and the fixed seats 2, the problem of continuous mechanical resonance at the connection point during use and the poor buffering effect of the flexible external structure of the double-end sealing device is effectively solved, thereby increasing the service life of the double-end sealing device.

[0023] In this embodiment, the outer wall of the connecting end seat 1 is provided with a plurality of threaded holes 12 arranged in a ring. A guide screw 5 is connected to the threaded hole 12 through the internal thread to achieve the fixing function of the guide screw 5.

[0024] In this embodiment, the surface of the fixed base 2 is provided with a plurality of guide openings 22 in a ring shape near the end of the connecting end base 1, and the number of guide openings 22 is the same as the number of guide screws 5. The guide screws 5 move within the guide openings 22, and the cooperation between the guide openings 22 and the guide screws 5 enables one end of the connecting end base 1 and the fixed base 2 to be displaced, thereby playing a guiding role. The opening size of the guide opening 22 is the distance of its guiding displacement.

[0025] In this embodiment, the connecting cavity 21 is adapted to the connecting end seat 1. This structural design allows the connecting end seat 1 to better cooperate with the connecting cavity 21. At the same time, the buffer spring 3 is adapted to the connecting groove 11. During the compression process, the buffer spring 3 can effectively prevent lateral deformation, thereby improving the buffering effect.

[0026] In this embodiment, a groove 23 is provided in the connecting cavity 21, and a sealing ring 4 is installed in the groove 23. The outer wall of the sealing ring 4 is in contact with the outer wall surface of the connecting end seat 1. This structural design improves the fit between the connecting cavity 21 and the outer wall of the connecting end seat 1, thereby improving the sealing performance.

[0027] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A double-end mechanical seal device with a buffering function, comprising a connecting end seat (1), characterized in that: Both ends of the connecting end seat (1) are provided with fixed seats (2). Each of the two fixed seats (2) has a connecting cavity (21) near the end of the connecting end seat (1). The inner walls of the two connecting cavities (21) are slidably connected to the outer walls of both ends of the connecting end seat (1). Multiple connecting grooves (11) are distributed in a ring at both ends of the connecting end seat (1). A buffer spring (3) is provided in the multiple connecting grooves (11). One end of the buffer spring (3) abuts against the inner wall of the connecting groove (11), and the other end of the buffer spring (3) abuts against the inner wall of the connecting cavity (21).

2. The double-end mechanical seal device with buffering function according to claim 1, characterized in that: The outer wall of the connecting end seat (1) is provided with a plurality of threaded holes (12) arranged in a ring, and a guide screw (5) is threaded into the threaded hole (12).

3. The double-end mechanical seal device with buffering function according to claim 1, characterized in that: The surface of the fixed base (2) is provided with a plurality of guide ports (22) arranged in a ring near the end of the connecting end base (1), and the number of guide ports (22) is the same as the number of guide screws (5).

4. The double-end mechanical seal device with buffering function according to claim 3, characterized in that: The guide screw (5) moves within the guide port (22).

5. The double-end mechanical seal device with buffering function according to claim 1, characterized in that: The connecting cavity (21) is adapted to the connecting end seat (1), and the buffer spring (3) is adapted to the connecting groove (11).

6. The double-end mechanical seal device with buffering function according to claim 5, characterized in that: The connecting cavity (21) has a groove (23) inside, and a sealing ring (4) is installed in the groove (23), and the outer wall of the sealing ring (4) is in contact with the outer wall surface of the connecting end seat (1).

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