Mechanical sealing device of desulfurization side stirrer

Abstract

The utility model relates to a mechanical sealing device of a desulfurization side stirrer, which comprises a shaft sleeve, a mounting groove is arranged at the bottom of the shaft sleeve, a movable ring is fixed in the mounting groove, a bearing seat is sleeved on the outer side of the shaft sleeve, a bearing is arranged in the bearing seat, a gland is fixedly connected with the upper end of the bearing seat, and a static ring is arranged at the lower end of the bearing seat. The upper end face of the movable ring makes contact with the static ring, a push ring is arranged on the other side, opposite to the movable ring, of the static ring, a mounting frame is arranged above the push ring, an anti-rotating pin is arranged in an anti-rotating pin hole in the static ring, a sealing cavity is formed among the mounting frame, the push ring, the static ring and the shaft sleeve, and a gap is reserved between the mounting frame and the push ring. A plurality of springs are evenly distributed in the gap, a spring protection sleeve used for shielding the gap is arranged in the sealing cavity, and the spring protection sleeve is connected with the push ring through a connecting piece. The technical scheme of the utility model has the technical effects of reliable sealing and prolonged service life.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal device for a desulfurization side stirrer. Background Art

[0002] In order to force convection and uniform mixing of solids, liquids and gases, or to strengthen the heat exchange process, mixers are indispensable in the production of chemical, construction, medical and food industries. In order to prevent leakage during the operation of the mixer, we generally install a mechanical seal inside the mixer. The leaked material of the mechanical seal device in the prior art will directly enter the sealing cavity, which is easy to block the spring and make the seal lose its elastic compensation force, thus causing the entire seal to fail and it is difficult to guarantee the service life. Utility Model Content

[0003] Based on the above problems, the utility model provides a mechanical sealing device for a desulfurization side agitator with reliable sealing and increased service life.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical sealing device of a desulfurization side agitator, comprising a sleeve for being sleeved on a stirring shaft, a mounting groove being provided at the bottom of the sleeve, a moving ring being fixed in the mounting groove by a transmission pin, a bearing seat being sleeved on the outer side of the sleeve, a bearing being arranged in the bearing seat, the bearing sleeve being sleeved on the sleeve, a pressure cap being fixedly connected to the upper end of the bearing seat, a static ring being arranged at the lower end of the bearing seat, the upper end surface of the moving ring being in contact with the static ring, a push ring being arranged in close contact with the other side of the static ring relative to the moving ring, a mounting frame being arranged above the push ring, an anti-rotation pin being arranged in the anti-rotation pin hole on the static ring, an end of the anti-rotation pin facing away from the static ring passing through the push ring and being placed in the anti-rotation pin hole on the mounting frame, a sealing cavity being formed between the mounting frame, the push ring, the static ring and the sleeve, a gap being left between the mounting frame and the push ring, a plurality of springs being evenly arranged in the gap, a spring protection cover for shielding the gap being arranged in the sealing cavity, and the spring protection cover being connected to the push ring through a connecting piece.

[0005] By adopting the above technical solution, the setting of the spring protection sleeve can be used to block the gap, so as to effectively prevent the material after the mechanical seal leaks from directly entering the sealing cavity, thereby blocking the spring and causing the mechanical seal to fail. The structure is reliable and the service life of the structure is further improved. The spring protection sleeve is connected to the push ring position through a connecting piece, and can perform dynamic compensation, making the structure more stable. The evenly distributed setting of multiple springs makes the thrust distribution more uniform, and the overall floatability of the elastic compensation is better. At the same time, it can extend the time for the static ring to compensate after the mechanical seal fails, and increase the replacement time of the mechanical seal due to leakage. The structure is reliable. The bearing adopts two double deep groove ball bearings and double bearing support, which can reduce the adverse effects of swing or vibration generated by the operation of the equipment on the stable operation of the mechanical seal.

[0006] The utility model further arranges: the connecting piece comprises a connecting groove and a connecting block adapted to the connecting groove, the connecting groove is arranged on a side of the push ring corresponding to the sealing cavity, and the connecting block is arranged on a side of the spring protection sleeve and corresponds to the position of the connecting block.

[0007] By adopting the above technical solution, when the spring protection cover is installed, the spring protection cover is installed to the push ring position through the snap-fitting cooperation between the connecting groove and the connecting block, which has a simple structure and is easy to install.

[0008] The utility model is further configured that: the connecting block and the spring protection sleeve are integrally formed.

[0009] By adopting the above technical solution, the processing is convenient, the convenience of disassembling and assembling the spring protection cover is further improved, and the structure is more stable and reliable.

[0010] The utility model is further configured that: the static ring and the dynamic ring are both made of SiC material.

[0011] By adopting the above technical solution, the heat generated by the mechanical seal during use does not need to be cooled by flushing, but can be cooled by the material itself, further improving the practicality of the structure.

[0012] The utility model is further configured as follows: a plurality of spring holes are opened upward along the circumference at the bottom of the mounting frame, each spring is installed in each spring hole, one end of the spring is pressed in the spring hole, and the other end is pressed on the push ring.

[0013] By adopting the above technical solution, the setting of the spring hole can not only locate the spring installation position, but also prevent the spring from swinging, thereby stably and evenly providing elastic force compensation, and the spring structure is more stable.

[0014] The utility model is further provided that: a leakage detection port is provided on the outer periphery of the bearing seat, and the leakage detection port is communicated with the sealing cavity.

[0015] By adopting the above technical solution, the leakage detection port is mainly used to detect the leakage of the mechanical seal, thereby ensuring the stable operation of the mechanical seal and improving the reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 for Figure 1 A magnified view of the structure of part A;

[0018] Figure 3 The structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0019] The meaning of the numbers in the figure are: 1-sleeve, 2-mounting groove, 3-moving ring, 4-bearing seat, 5-bearing, 6-pressure cover, 7-static ring, 8-push ring, 9-mounting frame, 10-anti-rotation pin, 11-sealing chamber, 12-gap, 13-spring, 14-spring protection cover, 15-connecting piece, 1501-connecting groove, 1502-connecting block, 16-spring hole, 17-leakage inspection port, 18-transmission pin, 19-positioning plate, 20-groove, 21-shrinkage ring, 22-cover plate, 23-bottom plate, 24-agitation shaft. DETAILED DESCRIPTION

[0020] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0021] See attached Figure 1-3The utility model discloses a mechanical sealing device for a desulfurization side agitator, comprising a sleeve 1 for sleeved on an agitator shaft 24, a mounting groove 2 being provided at the bottom of the sleeve 1, a moving ring 3 being fixed in the mounting groove 2 through a transmission pin 18, a bearing seat 4 being sleeved on the outer side of the sleeve 1, a bearing 5 being provided in the bearing seat 4, the bearing 5 being sleeved on the sleeve 1, a gland 6 being fixedly connected to the upper end of the bearing seat 4, a static ring 7 being provided at the lower end of the bearing seat 4, the upper end surface of the moving ring 3 being in contact with the static ring 7, and a push ring 8 being provided in close contact with the other side of the static ring 7 relative to the moving ring 3 A mounting frame 9 is arranged above the push ring 8, and an anti-rotation pin 10 is arranged in the anti-rotation pin hole on the static ring 7. The anti-rotation pin 10 passes through the push ring 8 with one end facing away from the static ring 7 and is placed in the anti-rotation pin hole on the mounting frame 9. A sealing cavity 11 is formed between the mounting frame 9, the push ring 8, the static ring 7 and the shaft sleeve 1. A gap 12 is left between the mounting frame 9 and the push ring 8, and a plurality of springs 13 are evenly distributed in the gap 12. A spring protection cover 14 for blocking the gap 12 is arranged in the sealing cavity 11, and the spring protection cover 14 is connected to the push ring 8 through a connecting piece 15. The spring protection sleeve 14 is provided to shield the gap 12, so as to effectively prevent the material after the mechanical seal leaks from directly entering the sealing cavity 11, thereby blocking the spring 13 and causing the mechanical seal to fail. The structure is reliable and the service life of the structure is further improved. The spring protection sleeve 14 is connected to the push ring 8 through the connector 15, and can perform dynamic compensation, making the structure more stable. The evenly distributed arrangement of the multiple springs 13 makes the thrust distribution more uniform, and the overall floatability of the elastic compensation is better. At the same time, the static ring 7 can still play a role in compensation after the mechanical seal fails, and the replacement time of the mechanical seal after leakage is increased. The structure is reliable. The bearing 5 adopts two double deep groove ball bearings 5, and the double bearings 5 ​​are supported, which can reduce the adverse effects of the swing or vibration generated by the operation of the equipment on the stable operation of the mechanical seal.

[0022] This embodiment further provides that: the connecting member 15 includes a connecting groove 1501 and a connecting block 1502 adapted to the connecting groove 1501, the connecting groove 1501 is arranged on the side of the push ring 8 corresponding to the sealing cavity 11, and the connecting block 1502 is arranged on the side of the spring protection sleeve 14 and corresponds to the position of the connecting block 1502. When the spring protection sleeve 14 is installed, the spring protection sleeve 14 is installed to the position of the push ring 8 through the snap-fitting of the connecting groove 1501 and the connecting block 1502, which has a simple structure and is easy to install.

[0023] This embodiment further provides that: the connecting block 1502 is integrally formed with the spring protection cover 14. The processing is convenient, and the convenience of disassembling and assembling the spring protection cover 14 is further improved, and the structure is more stable and reliable.

[0024] This embodiment further provides that: the static ring 7 and the dynamic ring 3 are both made of SiC material. The heat generated by the mechanical seal during use does not need to be cooled by flushing, but can be cooled by the material itself, further improving the practicality of the structure.

[0025] The present embodiment is further provided with: a plurality of spring holes 16 are provided at the bottom of the mounting frame 9 along the circumference, and each spring 13 is installed in each spring hole 16, with one end of the spring 13 resting in the spring hole 16 and the other end resting on the push ring 8. The provision of the spring hole 16 can not only locate the installation position of the spring 13, but also prevent the spring 13 from swinging, thereby stably and evenly providing elastic force compensation, and the structure of the spring 13 is more stable.

[0026] This embodiment further provides that: the outer periphery of the bearing seat 4 is provided with a leakage detection port 17, and the leakage detection port 17 is connected to the sealing cavity 11. The leakage detection port 17 is mainly used to detect the leakage of the mechanical seal, thereby ensuring the stable operation of the mechanical seal and improving the reliability of the structure.

[0027] The present embodiment is further provided with: a plurality of positioning pieces 19, preferably four, are provided above the gland 6; one end of the positioning piece 19 is fixed to the gland 6 by screws, and the other end extends toward the shaft sleeve 1 and is inserted into the groove 20 at the upper end of the shaft sleeve 1; the connection between the screw and the gland 6 is positioned by providing the positioning piece 19, thereby increasing the contact friction between the screw and the gland 6 and preventing the screw from falling off the gland 6; a shrinking ring 21 is provided on the upper end of the shaft sleeve 1, a cover plate 22 is provided on the outer surface of the upper end of the shrinking ring 21, a bottom plate 23 is provided on the lower end of the shrinking ring 21, and the bottom plate 23 is fastened to the cover plate 22 by screws.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs. A spring protection sleeve for shielding the gap is arranged in the sealing cavity, and the spring protection sleeve is connected to the push ring through a connecting piece.

2. The mechanical sealing device of a desulfurization side agitator according to claim 1, characterized in that: The connecting piece comprises a connecting groove and a connecting block matched with the connecting groove, the connecting groove is arranged on a side of the push ring corresponding to the sealing cavity, and the connecting block is arranged on a side of the spring protection sleeve and corresponds to the position of the connecting block.

3. The mechanical sealing device of the desulfurization side agitator according to claim 2 is characterized in that: The connecting block and the spring protection sleeve are integrally formed.

4. The mechanical sealing device of a desulfurization side agitator according to claim 1, characterized in that: The stationary ring and the dynamic ring are both made of SiC material.

5. The mechanical sealing device of the desulfurization side agitator according to claim 1, characterized in that: The bottom of the mounting frame is provided with spring holes corresponding to the number of springs along the circumference upwards, one end of the spring is pressed in the spring hole, and the other end is pressed on the push ring.

6. The mechanical sealing device of a desulfurization side agitator according to claim 1, characterized in that: The outer periphery of the bearing seat is provided with a leakage detection port, and the leakage detection port is communicated with the sealing cavity.

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