Mechanical sealing element with novel heat dissipation channel
By setting contact ring components in the static and dynamic ring units of the mechanical seal and guiding the heat dissipation oil with oil holes, the problem of insufficient heat dissipation of bearings is solved, and a more efficient heat dissipation effect is achieved, and the service life of the bearing is extended.
Patent Information
- Application Number
- CN202421125050.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In applications with high load or high speed rotation, the bearings in mechanical seals are insufficient to dissipate heat, resulting in increased temperatures, affecting performance and life.
A mechanical seal with a new type of heat dissipation channel is designed. By installing a static contact ring assembly on the static ring seat of the static ring unit and setting a static contact ring assembly in the static ring unit, the radial contact ring assembly is used to guide the heat dissipation oil to the contact ring. Components to realize heat dissipation between static and dynamic contact ring components.
It effectively improves the heat dissipation ability of the bearing, reduces the working temperature of the bearing, and extends the service life of the bearing.
Smart Images
Figure CN222437027U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mechanical seals, in particular to a mechanical seal with a novel heat dissipation channel. Background Art
[0002] Mechanical seals are key components used in the industrial field to prevent fluid leakage. They are usually installed in pumps, compressors and other rotating equipment to ensure the sealing performance of the shaft seal. In these applications, the end of the mechanical seal is often adjacent to the bearing, which is an important component used to support the shaft and reduce friction. However, the bearing generates heat during operation. If this heat cannot be effectively dissipated, it may cause the bearing temperature to rise, which in turn affects the performance and life of the bearing, and may even cause bearing damage or failure.
[0003] In current mechanical seals, the bearing is usually mounted directly on the shaft, and the shaft is connected to the pump body or other equipment through the mechanical seal. In this design, the heat dissipation of the bearing mainly depends on the natural convection and radiation of the surrounding environment. However, in some high-load or high-speed rotation applications, this natural heat dissipation method may not be sufficient to maintain the normal operating temperature of the bearing. Utility Model Content
[0004] In view of this, the utility model provides a mechanical seal with a novel heat dissipation channel which can solve the heat dissipation problem of the bearing to meet industrial needs.
[0005] A mechanical seal with a novel heat dissipation channel includes a stationary ring unit and a dynamic ring unit inserted at one end of the stationary ring unit. The stationary ring unit includes a stationary ring seat, a static contact ring assembly arranged on the stationary ring seat, and at least two springs arranged between the stationary ring seat and the static contact ring assembly. The stationary ring seat includes a stationary ring seat body, a stationary ring mounting hole and a dynamic ring mounting hole arranged in the axial direction of the stationary ring seat body, and four oil holes penetrated on the side wall of the stationary ring seat body and used for transmitting heat dissipation oil. Each of the oil holes is arranged at the intersection of the stationary ring mounting hole and the dynamic ring mounting hole. The dynamic ring unit includes a dynamic ring seat accommodated in the dynamic ring mounting hole, and a dynamic contact ring assembly arranged at one end of the dynamic ring seat facing the static contact ring assembly. The outer diameter of the dynamic ring seat body is smaller than the inner diameter of the dynamic ring mounting hole, so that the heat dissipation oil can flow out from the gap between the dynamic ring seat body and the dynamic ring mounting hole.
[0006] Furthermore, the stationary ring seat also includes at least one sealing ring installation groove arranged on the outer side wall of the stationary ring seat body, at least one balancing sealing ring sleeved in the sealing ring installation groove, at least one retaining spring installation groove arranged in the dynamic ring mounting hole, and a retaining spring accommodated in the retaining spring installation groove.
[0007] Furthermore, the thickness of the balancing sealing ring is greater than the depth of the sealing ring installation groove.
[0008] Furthermore, the dynamic ring seat includes a dynamic ring seat body accommodated in the dynamic ring mounting hole, and a limiting clamping groove arranged on the outer side wall of the dynamic ring seat body.
[0009] Further, when the dynamic ring unit is disposed in the static ring unit, the clamping spring is accommodated in the position-limiting clamping groove, and the clamping spring abuts against the edge of the position-limiting clamping groove.
[0010] Furthermore, the dynamic ring unit also includes a plurality of disassembly holes arranged at one end of the dynamic ring seat body facing away from the static ring seat.
[0011] Furthermore, the disassembly hole is a threaded hole.
[0012] Compared with the prior art, the mechanical seal with a novel heat dissipation channel provided by the utility model installs a static contact ring assembly and a dynamic ring unit through a static ring seat in the static ring unit, wherein the static ring seat includes a static ring seat body, a static ring mounting hole and a dynamic ring mounting hole arranged in the axial direction of the static ring seat body, and four oil holes penetrated on the side wall of the static ring seat body. Each of the oil holes is arranged at the intersection of the static ring mounting hole and the dynamic ring mounting hole, and the heat dissipation oil is guided to flow to the static contact ring assembly and the dynamic ring unit through the oil hole, thereby realizing the heat dissipation of the static contact ring assembly and the dynamic ring unit. And the outer diameter of the moving ring seat body is smaller than the inner diameter of the moving ring mounting hole. It can be imagined that there is a clearance fit between the moving ring seat body and the moving ring mounting hole, so that the heat dissipation oil in the static ring seat body flows out from the gap between the moving ring seat body and the moving ring mounting hole. During use, the mechanical seal with a new heat dissipation channel is provided with a bearing facing one side of the moving ring unit, and the heat dissipation oil flows out from the gap between the moving ring seat body and the moving ring mounting hole, and then flows to the bearing, thereby realizing heat dissipation of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic structural diagram of a mechanical seal with a novel heat dissipation channel provided by the utility model.
[0014] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure of the mechanical seal with a new heat dissipation channel at point A.
[0015] Figure 3 for Figure 1 Schematic diagram of the structure between a mechanical seal with a novel heat dissipation channel and a disassembly device. DETAILED DESCRIPTION
[0016] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.
[0017] like Figures 1 to 3 As shown, it is a schematic diagram of the structure of the mechanical seal with a novel heat dissipation channel provided by the utility model. The mechanical seal with a novel heat dissipation channel includes a stationary ring unit 10 and a dynamic ring unit 20 inserted at one end of the stationary ring unit 10. The mechanical seal with a novel heat dissipation channel also includes some other functional modules, such as assembly components, etc., which should be well known to those skilled in the art and will not be described in detail here.
[0018] The stationary ring unit 10 includes a stationary ring seat 11 , a stationary contact ring assembly 12 disposed on the stationary ring seat 11 , and at least two springs 13 disposed between the stationary ring seat 11 and the stationary contact ring assembly 12 .
[0019] The stationary ring seat 11 includes a stationary ring seat body 111, a stationary ring mounting hole 112 and a dynamic ring mounting hole 113 arranged axially on the stationary ring seat body 111, four oil holes 114 penetrating the side wall of the stationary ring seat body 111 and used for transmitting heat dissipation oil, at least one sealing ring mounting groove 115 arranged on the outer side wall of the stationary ring seat body 111, at least one balancing sealing ring 116 sleeved in the sealing ring mounting groove 115, at least one retaining ring mounting groove 117 arranged in the dynamic ring mounting hole 113, and a retaining ring 118 accommodated in the retaining ring mounting groove 117.
[0020] The stationary ring seat body 111 is fixedly connected to other equipment. The realization of the stationary ring seat body 111 is a prior art and will not be described in detail herein.
[0021] The stationary ring mounting hole 112 is used to install the static contact ring assembly 12 and the spring 13, and the dynamic ring mounting hole 113 is used to install the dynamic ring unit 20. The stationary ring mounting hole 112 and the dynamic ring mounting hole 113 are both existing technologies and will not be described in detail here.
[0022] There are four oil holes 114. In this embodiment, two of the oil holes 114 are oil inlet holes, and two of the oil holes 114 are oil outlet holes, thereby improving the flow efficiency of the heat dissipation oil in the stationary ring seat body 111. During use, the heat dissipation oil is injected into the stationary ring seat body 111 through the oil inlet hole, and the heat dissipation oil in the stationary ring seat body 111 flows out through the oil outlet hole. Each of the oil holes 114 is arranged at the intersection of the stationary ring mounting hole 112 and the dynamic ring mounting hole 113, so that the heat dissipation oil can flow to the static contact ring assembly 12 and the dynamic ring unit 20, thereby achieving heat dissipation of the static contact ring assembly 12 and the dynamic ring unit 20.
[0023] The sealing ring installation groove 115 is arranged on the outer wall of the stationary ring seat body 111, and the balancing sealing ring 116 is accommodated in the sealing ring installation groove 115, that is, the balancing sealing ring 116 is sleeved on the outer wall of the stationary ring seat body 111, and the thickness of the balancing sealing ring 116 is greater than the depth of the sealing ring installation groove 115, so that when the balancing sealing ring 116 is accommodated in the sealing ring installation groove 115, the balancing sealing ring 116 protrudes from the outer wall of the stationary ring seat body 111 to enhance the sealing effect of the stationary ring seat body 111. And when the stationary ring seat body 111 is horizontally installed on other equipment, the load-bearing pressure of the balancing sealing ring 116 itself can prevent the stationary ring seat body 111 from being biased to one side, thereby maintaining the balance of the stationary ring seat body 111, and further maintaining the balance of the contact ring assembly 12 and the dynamic ring unit 20.
[0024] The retaining spring 118 is disposed in the dynamic ring mounting hole 113. The retaining spring 118 is used to limit the position of the dynamic ring unit 20. The retaining spring 118 is also called a retaining ring or a spring retaining ring. It is a common mechanical part, mainly used to fix or lock other parts to prevent them from moving on the shaft or in the hole. The retaining spring 118 is a prior art. The retaining spring 118 is used to limit the movement of the dynamic ring unit 20. The retaining spring 118 will be described in detail in conjunction with the dynamic ring unit 20.
[0025] The static contact ring assembly 12 is accommodated in the static ring mounting hole 112. A static ring sealing ring is arranged on the side wall of the static contact ring assembly 12 to enhance the sealing effect between the static ring seat 11 and the static contact ring assembly 12. The assembly structure between the static contact ring assembly 12 and the static ring sealing ring is a prior art and will not be described in detail herein.
[0026] The spring 13 is disposed between the stationary ring seat 11 and the stationary contact ring assembly 12 . The spring 13 drives the stationary contact ring assembly 12 and the dynamic ring unit 20 to be tightly contacted with each other through the elastic force of the spring 13 . The spring 13 is a prior art and will not be described in detail here.
[0027] The dynamic ring unit 20 includes a dynamic ring seat 21 accommodated in the dynamic ring mounting hole 113 and a dynamic contact ring assembly 22 arranged at one end of the dynamic ring seat 21 facing the static contact ring assembly 12 .
[0028] The dynamic ring seat 21 includes a dynamic ring seat body 211 accommodated in the dynamic ring mounting hole 113, a limiting clamping groove 212 arranged on the outer side wall of the dynamic ring seat body 211, and a plurality of disassembly holes 213 arranged at one end of the dynamic ring seat body 211 facing away from the stationary ring seat 11.
[0029] The outer diameter of the moving ring seat body 211 is smaller than the inner diameter of the moving ring mounting hole 113. It can be imagined that there is a clearance fit between the moving ring seat body 211 and the moving ring mounting hole 113, so that the heat dissipation oil in the static ring seat body 111 flows out from the gap between the moving ring seat body 211 and the moving ring mounting hole 113. During use, a bearing is arranged on one side of the moving ring unit 20, and the heat dissipation oil flows out from the gap between the moving ring seat body 211 and the moving ring mounting hole 113, and then flows to the bearing, thereby realizing heat dissipation of the bearing.
[0030] The limiting snap-fit groove 212 cooperates with the retaining spring 118 , and when the dynamic ring unit 20 is accommodated in the static ring unit 10 , the retaining spring 118 abuts against the limiting snap-fit groove 212 , so that the retaining spring 118 limits the position of the dynamic ring seat 21 in the static ring seat 11 , so as to realize the assembly between the dynamic ring unit 20 and the static ring unit 10 .
[0031] The disassembly hole 213 is arranged at the end of the moving ring seat body 211 facing away from the stationary ring seat 11. The disassembly hole 213 is a threaded hole, and the disassembly hole 213 can be connected with a screw rod, and connected with the disassembly hole 213 through a disassembly device. The disassembly hole 213 can be connected with a disassembly device to drive the stationary ring unit 10 to move along the installation axis and push against the inner sleeve 4 in the bearing to move. The inner sleeve 4 of the bearing and the rotating shaft 5 are assembled together through the red sleeve assembly process, wherein the red sleeve assembly is a thermal interference assembly, which is the assembly process of bearings or shaft parts. This method involves heating the parts to a certain temperature to expand them so that they can be more easily installed in the predetermined position. The red sleeve assembly process is a prior art.
[0032] like Figure 3As shown, a plurality of connecting screws 2 and a driving screw 3 screwed on the support frame 1 are provided on the support frame 1 of the disassembly equipment, the disassembly hole 213 is connected to the connecting screw 2, one end of the driving screw 3 abuts against the rotating shaft, and by rotating the driving screw 3, the connecting screw 2 in the support frame 1 drives the moving ring seat 21 to slide, thereby abutting against the bearing on the rotating shaft, thereby realizing the separation of the inner sleeve 4 of the bearing and the rotating shaft 5.
[0033] A dynamic ring sealing ring is provided on the outer side wall of the dynamic contact ring assembly 22 to improve the sealing effect between the dynamic contact ring assembly 22 and the dynamic ring seat 21. The assembly structure between the dynamic contact ring assembly 22 and the dynamic ring seat 21 is a prior art and will not be described in detail here.
[0034] During the assembly process of the dynamic ring unit 20 and the static ring unit 10, the static contact ring assembly 12 is accommodated in the static ring mounting hole 112 in the static ring seat 11, and the dynamic ring unit 20 is accommodated in the dynamic ring mounting hole 113, and the static contact ring assembly 12 and the dynamic contact ring assembly 22 in the dynamic ring unit 20 abut against each other. The oil hole 114 guides the heat dissipation oil to flow to the static contact ring assembly 12 and the dynamic ring unit 20, thereby achieving heat dissipation of the static contact ring assembly 12 and the dynamic ring unit 20. The balancing seal ring 116 is accommodated in the seal ring mounting groove 115, thereby improving the sealing performance of the outer wall of the static ring seat body 111, and when the static ring seat body 111 is horizontally installed, the balancing seal ring 116 bears pressure to avoid the static ring seat body 111 from being biased on one side, thereby maintaining the balance of the static ring seat body 111, and thereby maintaining the balance of the contact ring assembly 12 and the dynamic ring unit 20.
[0035] Compared with the prior art, the mechanical seal with a novel heat dissipation channel provided by the utility model installs the static contact ring assembly 12 and the dynamic ring unit 20 through the static ring seat 11 in the static ring unit 10, wherein the static ring seat 11 includes a static ring seat body 111, a static ring mounting hole 112 and a dynamic ring mounting hole 113 arranged in the axial direction of the static ring seat body 111, and four oil holes 114 penetrated on the side wall of the static ring seat body 111. Each of the oil holes 114 is arranged at the intersection of the static ring mounting hole 112 and the dynamic ring mounting hole 113, and the heat dissipation oil is guided to flow to the static contact ring assembly 12 and the dynamic ring unit 20 through the oil hole 114, thereby realizing the heat dissipation of the static contact ring assembly 12 and the dynamic ring unit 20. And the outer diameter of the moving ring seat body 211 is smaller than the inner diameter of the moving ring mounting hole 113. It can be imagined that there is a clearance fit between the moving ring seat body 211 and the moving ring mounting hole 113, so that the heat dissipation oil in the static ring seat body 111 flows out from the gap between the moving ring seat body 211 and the moving ring mounting hole 113. During use, the mechanical seal with a new heat dissipation channel is provided with a bearing facing one side of the moving ring unit 20, and the heat dissipation oil flows out from the gap between the moving ring seat body 211 and the moving ring mounting hole 113, and then flows to the bearing to achieve heat dissipation of the bearing. The mechanical seal with a new heat dissipation channel has a simple structure and is easy to use, and achieves heat dissipation of the mechanical seal and the bearing, thereby increasing the service life of the bearing.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.
Claims
1. A mechanical seal with a novel heat dissipation channel, characterized in that: The mechanical seal with a novel heat dissipation channel includes a stationary ring unit and a dynamic ring unit inserted at one end of the stationary ring unit, the stationary ring unit includes a stationary ring seat, a static contact ring assembly arranged on the stationary ring seat, and at least two springs arranged between the stationary ring seat and the static contact ring assembly, the stationary ring seat includes a stationary ring seat body, a stationary ring mounting hole and a dynamic ring mounting hole arranged in the axial direction of the stationary ring seat body, and four oil holes penetrated through the side wall of the stationary ring seat body and used for transmitting heat dissipation oil, each of the oil holes is arranged at the intersection of the stationary ring mounting hole and the dynamic ring mounting hole, the dynamic ring unit includes a dynamic ring seat accommodated in the dynamic ring mounting hole, a dynamic contact ring assembly arranged on the end of the dynamic ring seat facing the static contact ring assembly, the outer diameter of the dynamic ring seat body is smaller than the inner diameter of the dynamic ring mounting hole, so that the heat dissipation oil can flow out from the gap between the dynamic ring seat body and the dynamic ring mounting hole.
2. The mechanical seal with a novel heat dissipation channel according to claim 1, characterized in that: The stationary ring seat also includes at least one sealing ring installation groove arranged on the outer side wall of the stationary ring seat body, at least one balancing sealing ring sleeved in the sealing ring installation groove, at least one retaining spring installation groove arranged in the dynamic ring mounting hole, and a retaining spring accommodated in the retaining spring installation groove.
3. The mechanical seal with a novel heat dissipation channel as claimed in claim 2, characterized in that: The thickness of the balancing seal ring is greater than the depth of the seal ring installation groove.
4. The mechanical seal with a novel heat dissipation channel according to claim 2, characterized in that: The dynamic ring seat comprises a dynamic ring seat body accommodated in the dynamic ring mounting hole, and a limiting clamping groove arranged on the outer side wall of the dynamic ring seat body.
5. The mechanical seal with a novel heat dissipation channel according to claim 4, characterized in that: When the dynamic ring unit is disposed in the static ring unit, the clamping spring is accommodated in the position-limiting clamping groove, and the clamping spring abuts against the edge of the position-limiting clamping groove.
6. The mechanical seal with a novel heat dissipation channel according to claim 1, characterized in that: The dynamic ring unit further comprises a plurality of disassembly holes arranged at one end of the dynamic ring seat body facing away from the static ring seat.
7. The mechanical seal with a novel heat dissipation channel according to claim 6, characterized in that: The disassembly hole is a threaded hole.