Mechanical sealing element with good connection stability

Abstract

The utility model discloses a mechanical sealing element with good connection stability, and relates to the technical field of mechanical sealing elements, the mechanical sealing element comprises a moving ring mechanism, a rotating shaft and a static ring mechanism, the moving ring mechanism comprises a moving ring shell, a protection groove, a screw hole, a first clamping groove and a second clamping groove, a first sealing ring is arranged in the first clamping groove, and a second sealing ring is arranged in the second clamping groove. A rotating shaft is arranged in the moving ring mechanism, the auxiliary sealing piece comprises an auxiliary sealing shell, a spring, a pressing plate, a storage shell, elastic cloth, an oil outlet pipe, a cover and an oil outlet ball, the spring is fixed to the inner side face of the auxiliary sealing shell, a reinforcing groove is fixed to the right end of the static ring shell, and a second sealing ring is arranged in the reinforcing groove. And a third sealing ring is arranged in the fourth clamping groove. According to the mechanical sealing piece with the good connection stability, the screws and the installation positions of the screws are protected through the protection rubber belt, lubricating oil can be conveniently added, the second sealing ring is prevented from falling off, and the connection stability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal with good connection stability. Background Art

[0002] Mechanical seals are one of the most complex and precise mechanical components. They are key components of various pumps, reaction reactors, turbine compressors, submersible motors and other equipment. They reduce friction and heat through lubricating oil.

[0003] The Chinese utility model patent with authorization announcement number CN204099603U discloses a new type of mechanical seal that solves the technical problem that existing mechanical seals generate heat due to sliding friction during operation, causing seal leakage, resulting in unnecessary economic losses or personal danger. The key points of its technical solution are: it includes a rotating shaft, a dynamic ring fixed on the rotating shaft, an auxiliary seal connected to the dynamic ring, and a static ring connected to the auxiliary seal. The auxiliary seal has a cavity, a lubricant is provided in the cavity, a slider is slidably connected in the cavity, and an elastic member is provided between the slider and the sealing cover. The mechanical seal of this utility model has a lubricating function, which ensures the sliding effect of the mechanical seal, reduces the heat generated by sliding friction, prevents the mechanical seal from leaking during operation, and improves the service life, working stability and safety of the seal.

[0004] However, it is not convenient to apply lubricating oil to the rotating shaft with the existing mechanical seal. The second sealing ring is limited only by the recessed portion, and the connection of the second sealing ring is not stable enough. Therefore, we propose a mechanical seal with good connection stability to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a mechanical seal with good connection stability, so as to solve the problem that the existing mechanical seal proposed in the above background technology is not convenient for applying lubricating oil to the rotating shaft, the second sealing ring is only limited by the recessed portion, and the connection of the second sealing ring is not stable enough.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a mechanical seal with good connection stability, comprising a dynamic ring mechanism, a rotating shaft and a static ring mechanism:

[0007] The dynamic ring mechanism includes a dynamic ring shell, a protective groove, a screw hole, a first clamping slot and a second clamping slot. A protective groove is provided at the left end of the internal part of the dynamic ring shell, a screw hole is provided on the inner side of the protective groove, and a first clamping slot is provided on the right side of the screw hole. A second clamping slot is provided at the right end of the dynamic ring shell, a protective rubber belt is provided inside the protective groove, a first sealing ring is provided inside the first clamping slot, a rotating shaft is provided inside the dynamic ring mechanism, and the rotating shaft is fixedly connected to the dynamic ring shell by a screw;

[0008] An auxiliary seal is provided on the right side of the dynamic ring mechanism, and the auxiliary seal includes an auxiliary sealing shell, a spring, a pressure plate, a storage shell, an elastic cloth, an oil outlet pipe, a cover and an oil outlet ball. The inner side of the auxiliary sealing shell is fixed with a spring, and the end of the spring away from the auxiliary sealing shell is fixed with a pressure plate, and the inner side of the pressure plate is provided with a storage shell, the interior of the storage shell is integrally connected with the elastic cloth, and the inner end of the storage shell is installed with an oil outlet ball, the outer end of the storage shell is connected with the oil outlet pipe, and the end of the oil outlet pipe is threadedly connected with a cover, and protrusions are fixed on both sides of the auxiliary sealing shell, and a static ring mechanism is provided on the right side of the auxiliary seal, and the static ring mechanism includes a static ring shell, a third slot, a reinforcement slot and a fourth slot, the left end of the static ring shell is provided with a third slot, the right end of the static ring shell is fixed with a reinforcement slot, and the right side of the reinforcement slot is provided with a fourth slot, the interior of the reinforcement slot is provided with a second sealing ring, and the interior of the fourth slot is provided with a third sealing ring.

[0009] Preferably, the second slot and the third slot are both used for mounting protrusions.

[0010] Preferably, the springs are fixed at equal angles on the inner side surface of the auxiliary sealing shell.

[0011] Preferably, the pressing plate is located outside the elastic cloth.

[0012] Preferably, the oil outlet pipe passes through the auxiliary sealing shell, and the oil outlet pipe is fixedly connected to the auxiliary sealing shell.

[0013] Preferably, the longitudinal section of the inner end of the second sealing ring is a "convex"-shaped structure.

[0014] Preferably, the oil outlet ball is rollingly mounted on the inner end of the storage shell.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the mechanical seal with good connection stability, the protective rubber belt protects the screws and the screw installation, which makes it easy to add lubricating oil, prevents the second sealing ring from falling off, and improves the connection stability;

[0016] 1. After the screw is inserted into the rotating shaft through the screw hole, the protective rubber belt is put into the protective groove to protect the screw and the screw installation point;

[0017] 2. When the shaft rotates, the oil ball rolls until the hole of the oil ball coincides with the oil outlet of the storage shell, and the lubricating oil flows out from the inside of the storage shell, making it easy to add lubricating oil;

[0018] Under the elastic action of the spring, the pressure plate and the elastic cloth move inward, squeezing the storage cavity of the storage shell and promoting the oil discharge process;

[0019] 3. The longitudinal section of the inner end of the second sealing ring is a "convex"-shaped structure. The convex structure at the inner end of the second sealing ring is inserted into the interior of the reinforcement groove, stably installing the second sealing ring to prevent it from falling off, and providing better connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front axial section structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the decomposition structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the axial side cross-section structure of the dynamic ring mechanism of the utility model;

[0024] Figure 5 This is a schematic diagram of the axial side cross-section structure of the auxiliary seal of the utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the auxiliary sealing shell of the utility model;

[0026] Figure 7 This is a schematic diagram of the axial side cross-section structure of the static ring mechanism of the utility model.

[0027] In the figure: 1. Dynamic ring mechanism; 101. Dynamic ring housing; 102. Protective groove; 103. Screw hole; 104. First slot; 105. Second slot; 2. Rotating shaft; 3. Auxiliary seal; 301. Auxiliary seal housing; 302. Spring; 303. Pressure plate; 304. Storage housing; 305. Elastic cloth; 306. Oil outlet pipe; 307. Cover; 308. Oil outlet ball; 4. Protrusion; 5. Static ring mechanism; 501. Static ring housing; 502. Third slot; 503. Reinforcement groove; 504. Fourth slot; 6. Protective rubber belt; 7. Screw; 8. First sealing ring; 9. Second sealing ring; 10. Third sealing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figures 1-4 The existing mechanical seal fixes the dynamic ring mechanism 1 and the rotating shaft 2 by screws 7, but the sealing performance of the connection of the screws 7 is poor. In order to solve this technical problem, this embodiment discloses the following technical content;

[0030] A mechanical seal with good connection stability includes a dynamic ring mechanism 1, a rotating shaft 2 and a static ring mechanism 5. The dynamic ring mechanism 1 includes a dynamic ring housing 101, a protective groove 102, a screw hole 103, a first clamping groove 104 and a second clamping groove 105. The dynamic ring housing 101 has a protective groove 102 at its left end, a screw hole 103 is provided on the inner side of the protective groove 102, and a first clamping groove 104 is provided on the right side of the screw hole 103. The dynamic ring housing 101 has a second clamping groove 105 at its right end, a protective rubber belt 6 is provided inside the protective groove 102, a rotating shaft 2 is provided inside the dynamic ring mechanism 1, and the rotating shaft 2 is fixedly connected to the dynamic ring housing 101 by a screw 7.

[0031] After the screw 7 is inserted into the interior of the rotating shaft 2 through the screw hole 103, the protective rubber belt 6 is then put into the interior of the protective groove 102 to protect the screw 7 and the screw 7 installation position through the protective rubber belt 6;

[0032] Example 2: It is inconvenient to apply lubricating oil to the rotating shaft 2 with the existing mechanical seal. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figure 1-Figure 3 、 Figure 5 and Figure 6 ;

[0033] The first sealing ring 8 is provided inside the first card slot 104, and the auxiliary sealing member 3 is provided on the right side of the dynamic ring mechanism 1. The auxiliary sealing member 3 includes an auxiliary sealing shell 301, a spring 302, a pressure plate 303, a storage shell 304, an elastic cloth 305, an oil outlet pipe 306, a cover 307 and an oil outlet ball 308. The inner side of the auxiliary sealing shell 301 is fixed with a spring 302, and the end of the spring 302 away from the auxiliary sealing shell 301 is fixed with a pressure plate 303, and the inner side of the pressure plate 303 is provided with a storage shell 304, and the interior of the storage shell 304 is integrally connected with an elastic cloth. 305, and an oil outlet ball 308 is installed at the inner end of the storage shell 304, the outer end of the storage shell 304 is connected to the oil outlet pipe 306, and the end of the oil outlet pipe 306 is threadedly connected to the cover 307, the left and right sides of the auxiliary sealing shell 301 are fixed with protrusions 4, the spring 302 is fixed at an equal angle to the inner side of the auxiliary sealing shell 301, the pressure plate 303 is located on the outside of the elastic cloth 305, the oil outlet pipe 306 runs through the auxiliary sealing shell 301, and the oil outlet pipe 306 is fixed to the auxiliary sealing shell 301, and the oil outlet ball 308 is rollingly installed at the inner end of the storage shell 304;

[0034] Remove the cover 307, open the oil outlet pipe 306, and add lubricating oil into the oil outlet pipe 306. The lubricating oil enters the interior of the storage shell 304, and the oil outlet ball 308 fits against the rotating shaft 2. When the dynamic ring mechanism 1 and the rotating shaft 2 rotate, the oil outlet ball 308 rotates. When the hole inside the oil outlet ball 308 coincides with the oil outlet port of the storage shell 304, the lubricating oil flows out from the hole in the oil outlet ball 308 and is coated on the rotating shaft 2. During the oil outlet process, the elastic action of the spring 302 presses the elastic cloth 305 inward, shrinking the internal space of the storage shell 304 and promoting the oil outlet.

[0035] Example 3: The existing mechanical seal only defines the second sealing ring 9 by the recessed portion, and the connection of the second sealing ring 9 is not stable enough. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figure 1-Figure 3 and Figure 7 ;

[0036] A static ring mechanism 5 is provided on the right side of the auxiliary seal 3, and the static ring mechanism 5 includes a static ring shell 501, a third slot 502, a reinforcement slot 503 and a fourth slot 504. The left end of the static ring shell 501 is provided with a third slot 502, the right end of the static ring shell 501 is fixed with a reinforcement slot 503, and the right side of the reinforcement slot 503 is provided with a fourth slot 504. A second sealing ring 9 is provided inside the reinforcement slot 503, and a third sealing ring 10 is provided inside the fourth slot 504. The second slot 105 and the third slot 502 are both used to install the protrusion 4, and the inner end longitudinal section of the second sealing ring 9 is a "convex" structure.

[0037] Insert the convex structure at the inner end of the second sealing ring 9 into the reinforcement groove 503 to prevent the second sealing ring 9 from falling off and improve the connection stability;

[0038] The above completes a series of operations for the mechanical seal with good connection stability. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0039] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mechanical seal with good connection stability, comprising a dynamic ring mechanism (1), a rotating shaft (2) and a static ring mechanism (5), characterized in that: The dynamic ring mechanism (1) comprises a dynamic ring shell (101), a protective groove (102), a screw hole (103), a first clamping groove (104) and a second clamping groove (105); the dynamic ring shell (101) is provided with a protective groove (102) at the left end thereof, the inner side of the protective groove (102) is provided with a screw hole (103), and the right side of the screw hole (103) is provided with a first clamping groove (104); the right end of the dynamic ring shell (101) is provided with a second clamping groove (105); the interior of the protective groove (102) is provided with a protective rubber belt (6); the interior of the first clamping groove (104) is provided with a first sealing ring (8); the interior of the dynamic ring mechanism (1) is provided with a rotating shaft (2); the rotating shaft (2) is fixedly connected to the dynamic ring shell (101) by a screw (7); An auxiliary seal (3) is provided on the right side of the dynamic ring mechanism (1), and the auxiliary seal (3) comprises an auxiliary seal shell (301), a spring (302), a pressure plate (303), a storage shell (304), an elastic cloth (305), an oil outlet pipe (306), a cover (307) and an oil outlet ball (308). The inner side of the auxiliary seal shell (301) is fixed with a spring (302), an end of the spring (302) away from the auxiliary seal shell (301) is fixed with a pressure plate (303), and a storage shell (304) is provided on the inner side of the pressure plate (303). The interior of the storage shell (304) is integrally connected to the elastic cloth (305), and the inner end of the storage shell (304) is installed with an oil outlet ball (308). The outer end of the storage shell (304) is connected to the outlet. An oil pipe (306) is provided, and the end of the oil outlet pipe (306) is threadedly connected to a cover (307), protrusions (4) are fixed on both the left and right sides of the auxiliary sealing shell (301), a static ring mechanism (5) is provided on the right side of the auxiliary sealing member (3), and the static ring mechanism (5) comprises a static ring shell (501), a third clamping groove (502), a reinforcement groove (503) and a fourth clamping groove (504), a third clamping groove (502) is provided on the left end of the static ring shell (501), a reinforcement groove (503) is fixed on the right end of the static ring shell (501), and a fourth clamping groove (504) is provided on the right side of the reinforcement groove (503), a second sealing ring (9) is provided inside the reinforcement groove (503), and a third sealing ring (10) is provided inside the fourth clamping groove (504).

2. A mechanical seal with good connection stability according to claim 1, characterized in that: The second card slot (105) and the third card slot (502) are both used for mounting the protrusion (4).

3. The mechanical seal with good connection stability according to claim 1, characterized in that: The spring (302) is fixed at an equal angle to the inner side surface of the auxiliary sealing shell (301).

4. The mechanical seal with good connection stability according to claim 1, characterized in that: The pressing plate (303) is located outside the elastic cloth (305).

5. The mechanical seal with good connection stability according to claim 1, characterized in that: The oil outlet pipe (306) passes through the auxiliary sealing shell (301), and the oil outlet pipe (306) is fixedly connected to the auxiliary sealing shell (301).

6. The mechanical seal with good connection stability according to claim 1, characterized in that: The inner end longitudinal section of the second sealing ring (9) is a "convex" shaped structure.

7. The mechanical seal with good connection stability according to claim 1, characterized in that: The oil outlet ball (308) is rollingly mounted on the inner end of the storage shell (304).

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