Axial double-auxiliary mechanical sealing device
By designing an axial dual auxiliary mechanical sealing device in pump machines, and using the cooperation of the machine sealing mechanism and the sealing ring, the problem of poor sealing effect of pump machines is solved, and a higher sealing effect and service life is achieved.
Patent Information
- Application Number
- CN202421556260.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing pump machine sealing structure has the problem of poor sealing effect, which leads to leakage, resulting in suspension of production and maintenance, fluctuations in product quality, severe pollution of the environment, and possible safety accidents.
A axial dual auxiliary mechanical sealing device is designed. By setting up a machine sealing mechanism, a first and secondary dynamic ring, a static ring, a sealing rubber ring and a machine sealing body, the close cooperation between the dynamic ring and the static ring is achieved, preventing liquid or gas leakage, and ensuring the lubrication of the bearing through the oil storage chamber and the oil refueling hole.
It effectively improves the sealing effect of pump machines, extends the service life, avoids production shutdowns and environmental pollution caused by leakage, and ensures the safe and stable operation of the equipment.
Smart Images
Figure CN222668908U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical seals for pump machines, in particular to an axial double-auxiliary mechanical seal device. Background Art
[0002] Pump machines are commonly used in industrial production, and their mechanical seals are one of the key components to ensure the normal operation of pump machines. Pump mechanical seals refer to devices installed and operated in pump equipment that play a dynamic sealing role, preventing the fluid medium in the volute of the water pump from flowing out of the water pump through the pump shaft.
[0003] However, the existing pump machine sealing structure has the problem of poor sealing effect. Once a leak occurs, it will cause production suspension for maintenance and product quality fluctuations. It will also seriously pollute the environment and may cause safety accidents, endangering personal safety and the physical and mental health of employees, and affecting the use effect and service life of the pump machine.
[0004] To this end, we propose an axial double auxiliary mechanical seal device. Utility Model Content
[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides an axial double auxiliary mechanical sealing device.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an axial double-auxiliary mechanical sealing device, including a pump body, an organic sealing body is arranged on the right side of the outer wall of the pump body, a refueling hole is opened on the top of the pump body, an oil storage chamber is opened on the upper end of the inner part of the pump body, a bearing body is arranged on the left side of the inner part of the pump body, a hole end cover is arranged on the left side of the outer wall of the pump body, a lock nut is arranged on the left side wall of the pump body, an oil seal is arranged on the left side of the inner wall of the pump body, a bearing is arranged on the inner wall of the pump body located on the right side of the oil seal, an observation cup is fixedly installed on the bottom of the pump body, a shaft is movably installed on the inner wall of the pump body, and the left side of the outer wall of the shaft is movably connected to the inner wall of the lock nut, an organic sealing mechanism is arranged inside the pump body, the mechanical sealing mechanism includes an organic sealing seat, and the outer wall of the mechanical sealing seat is fixedly connected to the right side of the inner wall of the pump body, a secondary spring is arranged on the inner wall of the pump body located on the left side of the mechanical sealing seat, a secondary moving ring is arranged on the inner wall of the pump body located on the left side of the secondary spring, and the inner wall of the secondary moving ring is movably connected to the outer wall of the shaft.
[0007] Preferably, an organic sealing alloy block is arranged on the inner wall of the pump body on the left side of the secondary dynamic ring, a secondary static ring is arranged on the inner wall of the pump body on the left side of the mechanical sealing alloy block, and the inner wall of the secondary static ring is movably connected to the outer wall of the shaft.
[0008] Preferably, a secondary sealing rubber ring is provided on the inner wall of the pump body outside the secondary static ring, and the inner wall of the secondary sealing rubber ring is movably connected to the outer wall of the shaft.
[0009] Preferably, an organic sealing sleeve is provided on the inner wall of the pump body on the left side of the secondary static ring.
[0010] Preferably, a first-stage spring is arranged on the inner wall of the pump body on the left side of the mechanical seal sleeve.
[0011] Preferably, a first-stage dynamic ring is provided on the inner wall of the pump body located on the left side of the first-stage spring, and the inner wall of the first-stage dynamic ring is movably connected to the outer wall of the shaft.
[0012] Preferably, a first-stage static ring is arranged on the inner wall of the pump body on the left side of the first-stage dynamic ring, and the inner wall of the first-stage static ring is movably connected to the outer wall of the shaft.
[0013] Preferably, a first-stage sealing rubber ring is provided on the inner wall of the pump body located outside the first-stage static ring.
[0014] Preferably, an organic sealing cover is provided on the inner wall of the pump body on the left side of the first-stage static ring.
[0015] Beneficial Effects
[0016] The utility model provides an axial double auxiliary mechanical sealing device. It has the following beneficial effects:
[0017] (1) This axial double-auxiliary mechanical seal device, through the mechanical seal mechanism, the primary dynamic ring and the secondary dynamic ring are movably connected to the shaft respectively, and the primary static ring and the secondary static ring are movably connected to the shaft respectively. When the mechanical seal is working, the dynamic ring rotates with the shaft, and the static ring does not rotate. The static ring is sealed with the pump body through the secondary sealing rubber ring and the primary sealing rubber ring, thereby achieving a sealing effect and improving the use effect and service life of the pump machine.
[0018] (2) This axial double auxiliary mechanical seal device installs the bearing in the pump body through the mechanical seal box body, oil filling hole, oil storage chamber, bearing body, perforated end cover, lock nut, oil seal, bearing and observation cup. The bearing body is installed on the outside of the bearing. The oil seal is installed on the outside of the bearing. The oil seal is fixed to the pump body through the lock nut to seal the bearing. Lubricating oil is added to the oil storage chamber through the oil filling hole. When the bearing is running, the lubricating oil is thrown into the perforated end cover and enters the bearing through the small hole of the perforated end cover to lubricate the bearing and increase the service life of the bearing. At the same time, the observation cup can observe the oil level in the bearing chamber at any time, thereby improving the use effect and service life of the pump machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a front structural perspective view of the utility model;
[0020] Figure 2 This is a perspective view of the back structure of the utility model;
[0021] Figure 3 for Figure 1 Enlarged view of point A in the middle.
[0022] Legend: 10. Pump body; 11. Machine seal box body; 12. Oil filling hole; 13. Oil storage chamber; 14. Bearing body; 15. End cover with hole; 16. Lock nut; 17. Oil seal; 18. Bearing; 19. Observation cup; 20. Shaft; 21. Machine seal seat; 22. Secondary spring; 23. Secondary dynamic ring; 24. Machine seal alloy block; 25. Secondary static ring; 26. Secondary sealing rubber ring; 27. Machine seal box sleeve; 28. First-stage spring; 29. First-stage dynamic ring; 30. First-stage static ring; 31. First-stage sealing rubber ring; 32. Machine seal cover. DETAILED DESCRIPTION
[0023] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0024] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0026] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "upper", "lower", "inner", "outer", "side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] Embodiment 1: A shaft 20-direction dual auxiliary mechanical seal device, such as Figure 1 As shown, it includes a pump body 10, an organic sealing body 11 is arranged on the right side of the outer wall of the pump body 10, a refueling hole 12 is opened on the top of the pump body 10, a hole end cover 15 is arranged on the left side of the outer wall of the pump body 10, a lock nut 16 is arranged on the left side wall of the pump body 10, an oil seal 17 is arranged on the left side of the inner wall of the pump body 10, a bearing 18 is arranged on the inner wall of the pump body 10 located on the right side of the oil seal 17, an observation cup 19 is fixedly installed on the bottom of the pump body 10, a shaft 20 is movably installed on the inner wall of the pump body 10, and the left side of the outer wall of the shaft 20 is movably connected to the inner wall of the lock nut 16, through the mechanical sealing mechanism, the primary moving ring and the secondary moving ring are movably connected to the shaft respectively, and the primary static ring and the secondary static ring are movably connected to the shaft respectively. When the mechanical seal is working, the moving ring rotates with the shaft, and the static ring does not rotate. The static ring is sealed with the pump body through the secondary sealing rubber ring and the primary sealing rubber ring, so as to achieve a sealing effect, thereby improving the use effect and service life of the pump machine.
[0030] Embodiment 2: Based on Embodiment 1, Figure 2 As shown, an oil storage chamber 13 is opened at the upper end of the interior of the pump body 10, and a bearing body 14 is arranged on the left side of the interior of the pump body 10. The bearing is installed in the pump body through the machine seal box body, refueling hole, oil storage chamber, bearing body, perforated end cover, lock nut, oil seal, bearing and observation cup. The bearing body is installed on the outside of the bearing, and an oil seal is installed on the outside of the bearing. The oil seal is fixed to the pump body through the lock nut to seal the bearing. Lubricating oil is added to the oil storage chamber through the refueling hole. When the bearing is running, the lubricating oil is thrown into the perforated end cover and enters the bearing through the small hole of the perforated end cover, which lubricates the bearing and improves the service life of the bearing. At the same time, the observation cup can observe the oil level in the bearing chamber at any time, thereby improving the use effect and service life of the pump machine.
[0031] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 3 As shown, an organic sealing mechanism is arranged inside the pump body 10, and the organic sealing mechanism includes an organic sealing seat 21, and the outer wall of the organic sealing seat 21 is fixedly connected to the right side of the inner wall of the pump body 10, and the inner wall of the pump body 10 is located on the left side of the organic sealing seat 21 and is provided with a secondary spring 22, and the inner wall of the pump body 10 is located on the left side of the secondary spring 22 and is provided with a secondary dynamic ring 23, and the inner wall of the secondary dynamic ring 23 is movably connected to the outer wall of the shaft 20, and the inner wall of the pump body 10 is located on the left side of the secondary dynamic ring 23 and is provided with an organic sealing alloy block 24, and the inner wall of the pump body 10 is located on the left side of the organic sealing alloy block 24 and is provided with a secondary static ring 25, and the inner wall of the secondary static ring 25 is movably connected to the outer wall of the shaft 20, and the inner wall of the pump body 10 is located on the outside of the secondary static ring 25 and is provided with a secondary sealing rubber ring 2 6, and the inner wall of the secondary sealing rubber ring 26 is movably connected to the outer wall of the shaft 20, the inner wall of the pump body 10 is located on the left side of the secondary static ring 25 and is provided with an organic sealing sleeve 27, the inner wall of the pump body 10 is located on the left side of the mechanical sealing sleeve 27 and is provided with a first-stage spring 28, the inner wall of the pump body 10 is located on the left side of the first-stage spring 28 and is provided with a first-stage dynamic ring 29, and the inner wall of the first-stage dynamic ring 29 is movably connected to the outer wall of the shaft 20, the inner wall of the pump body 10 is located on the left side of the first-stage dynamic ring 29 and is provided with a first-stage static ring 30, and the inner wall of the first-stage static ring 30 is movably connected to the outer wall of the shaft 20, the inner wall of the pump body 10 is located on the outer side of the first-stage static ring 30 and is provided with a first-stage sealing rubber ring 31, the inner wall of the pump body 10 is located on the left side of the first-stage static ring 30 and is provided with an organic sealing cover 32,
[0032] The working principle of the utility model is as follows: inside the pump body 10, a mechanical sealing mechanism is provided to achieve close cooperation between the dynamic ring and the static ring, thereby effectively preventing leakage of liquid or gas in the pump body, wherein the dynamic ring rotates with the shaft 20, while the static ring remains stationary, and a thin liquid film is formed on the contact surface between the dynamic ring and the static ring through the preload force of the spring and the pressure of the working medium to achieve a sealing effect. While mechanically sealing, the lubrication of the bearing is also crucial. The oil storage chamber 13 provided inside the pump body 10 is filled with a proper amount of lubricating oil through the refueling hole 12. When the bearing 18 is running, the lubricating oil is thrown into the perforated end cover 15 and enters the inside of the bearing through the small hole to lubricate the bearing, reduce friction and wear, and increase the service life of the bearing. In addition, through the observation cup 19, the user can observe the oil level in the bearing chamber at any time to ensure that the bearing is always operating under sufficient lubrication conditions. If the oil level is too low, the user can replenish the lubricating oil in time through the refueling hole 12 to ensure the normal operation of the pump machine.
[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An axial (20) dual auxiliary mechanical seal device, comprising a pump body (10), characterized in that: An organic sealing body (11) is arranged on the right side of the outer wall of the pump body (10), a refueling hole (12) is arranged on the top of the pump body (10), an oil storage chamber (13) is arranged on the upper end of the pump body (10), a bearing body (14) is arranged on the left side of the inside of the pump body (10), a hole end cover (15) is arranged on the left side of the outer wall of the pump body (10), a lock nut (16) is arranged on the left side wall of the pump body (10), an oil seal (17) is arranged on the left side of the inner wall of the pump body (10), a bearing (18) is arranged on the inner wall of the pump body (10) on the right side of the oil seal (17), and an observation cup (10) is fixedly installed on the bottom of the pump body (10). 9), a shaft (20) is movably mounted on the inner wall of the pump body (10), and the left side of the outer wall of the shaft (20) is movably connected to the inner wall of the lock nut (16), a mechanical seal mechanism is arranged inside the pump body (10), the mechanical seal mechanism comprises a mechanical seal seat (21), and the outer wall of the mechanical seal seat (21) is fixedly connected to the right side of the inner wall of the pump body (10), a secondary spring (22) is arranged on the inner wall of the pump body (10) on the left side of the mechanical seal seat (21), a secondary dynamic ring (23) is arranged on the inner wall of the pump body (10) on the left side of the secondary spring (22), and the inner wall of the secondary dynamic ring (23) is movably connected to the outer wall of the shaft (20).
2. The axial (20) dual auxiliary mechanical seal device according to claim 1, characterized in that: An organic sealing alloy block (24) is arranged on the inner wall of the pump body (10) located on the left side of the secondary dynamic ring (23), and a secondary static ring (25) is arranged on the inner wall of the pump body (10) located on the left side of the mechanical sealing alloy block (24), and the inner wall of the secondary static ring (25) is movably connected to the outer wall of the shaft (20).
3. The axial (20) dual auxiliary mechanical seal device according to claim 2, characterized in that: The inner wall of the pump body (10) is located outside the secondary static ring (25) and is provided with a secondary sealing rubber ring (26), and the inner wall of the secondary sealing rubber ring (26) is movably connected to the outer wall of the shaft (20).
4. The axial (20) dual auxiliary mechanical seal device according to claim 2, characterized in that: An organic sealing sleeve (27) is arranged on the inner wall of the pump body (10) on the left side of the secondary static ring (25).
5. The axial (20) dual auxiliary mechanical seal device according to claim 4, characterized in that: The inner wall of the pump body (10) is provided with a first-stage spring (28) on the left side of the mechanical seal sleeve (27).
6. The axial (20) dual auxiliary mechanical seal device according to claim 5, characterized in that: The inner wall of the pump body (10) is located on the left side of the first-stage spring (28) and is provided with a first-stage dynamic ring (29), and the inner wall of the first-stage dynamic ring (29) is movably connected to the outer wall of the shaft (20).
7. The axial (20) dual auxiliary mechanical seal device according to claim 6, characterized in that: The inner wall of the pump body (10) is provided with a first-stage static ring (30) on the left side of the first-stage dynamic ring (29), and the inner wall of the first-stage static ring (30) is movably connected to the outer wall of the shaft (20).
8. The axial (20) dual auxiliary mechanical seal device according to claim 7, characterized in that: The inner wall of the pump body (10) is provided with a first-stage sealing rubber ring (31) on the outer side of the first-stage static ring (30).
9. The axial (20) dual auxiliary mechanical seal device according to claim 7, characterized in that: An organic sealing cover (32) is provided on the inner wall of the pump body (10) on the left side of the first-stage static ring (30).