Mechanical sealing structure and lithium battery new energy sand mill
By setting dynamic and static sealing units and sealing cavity structures at both ends of the bushing of the lithium battery new energy sand mill, the problem of poor sealing effect in the existing technology is solved, a more efficient sealing effect is achieved, and the risk of leakage is reduced.
Patent Information
- Application Number
- CN202422760920.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The existing mechanical seal structure of lithium-ion battery-powered new energy sand mills results in limited sealing performance, increasing the risk of leakage.
Dynamic sealing units and static sealing units are set at both ends of the bushing to form a sealing pair. A sealing cavity is formed between the bushing and the gland. The dynamic sealing unit rotates with the bushing and abuts against the static sealing unit. Combined with structures such as the guide sleeve and support ring, the sealing effect is enhanced.
It effectively reduces the risk of leakage, ensures that the medium does not leak, protects the internal structure of the sand mill and prevents external impurities from entering, and improves the reliability of the seal.
Smart Images
Figure CN223483428U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of mechanical seals, specifically, it relates to a mechanical seal structure and a lithium battery new energy sand mill. Background Art
[0002] The lithium battery new energy sand mill uses an electric motor to drive a grinding wheel to rotate at high speed, thereby achieving the functions of grinding and polishing materials. Through grinding and dispersion processes, materials are ground into the required particle size to meet the process requirements in lithium battery manufacturing.
[0003] Currently, the mechanical seal structure of existing lithium battery-powered new energy sand mills is simple, resulting in limited sealing effect and increasing the risk of leakage. Utility Model Content
[0004] In view of this, in order to solve the above-mentioned problems existing in the prior art, the purpose of this utility model is to provide a mechanical seal structure and a lithium battery new energy sand mill, so as to solve the technical problem that the mechanical seal structure in the prior art is prone to leakage.
[0005] The technical solution adopted in this utility model is as follows:
[0006] In the first aspect, a mechanical seal structure is disclosed, comprising:
[0007] Two sealing components are respectively fitted onto the bushing and located at both ends of the gland in the axial direction;
[0008] The sealing assembly includes a dynamic sealing unit and a static sealing unit. The static sealing unit is located close to the gland and cannot rotate relative to the bushing. The dynamic sealing unit is located away from the gland and rotates with the bushing. The end faces of the dynamic sealing unit and the static sealing unit abut against each other to form a sealing pair.
[0009] The gland is fitted onto the sealing assembly and cannot rotate relative to the bushing; the gland and the bushing form a sealed cavity.
[0010] In some designs, the static sealing unit includes a static ring and an elastic element;
[0011] The stationary ring is sleeved on the bushing and cannot rotate relative to the bushing; one end of the stationary ring is connected to the axial side wall of the gland through the elastic element, and under the action of the elastic element, the other end of the stationary ring abuts against the dynamic sealing unit to form a sealing pair.
[0012] In some designs, a sealing ring and a support ring are also included near the static sealing unit;
[0013] The end of the gland facing the medium side has an installation groove, and the sealing ring is fitted inside the installation groove;
[0014] The mounting groove has an extension that extends through the gland toward the medium side;
[0015] The support ring is fitted inside the mounting groove and is located between the sealing ring and the extension; the support ring abuts against the extension.
[0016] In some embodiments, the support ring has a first protrusion that extends into the extension;
[0017] The outer peripheral wall of the first protrusion is inclined toward the bushing from the atmospheric side toward the medium side.
[0018] In some embodiments, the dynamic sealing unit includes a dynamic ring, which is sleeved on the bushing and rotates with the bushing; the dynamic ring abuts against the static sealing unit to form a sealing pair;
[0019] The dynamic sealing unit near the atmosphere also includes a dynamic ring seat, which is sleeved on the bushing and rotates with the bushing; the dynamic ring seat is connected to the dynamic ring near the atmosphere.
[0020] In some designs, a positioning ring is also included, which is fitted onto the bushing and connected to the pressure cap.
[0021] In some designs, two guide sleeves are also included, each sleeved onto the shaft sleeve.
[0022] The inner wall of the gland has a second protrusion facing the sealing cavity, and the two bushings are respectively installed at both ends of the second protrusion along the axial direction of the bushings.
[0023] In some embodiments, the inner peripheral walls of the two guide sleeves are coplanar with the inner peripheral wall of the second protrusion.
[0024] In some designs, the dynamic sealing unit near the medium side also includes a retaining ring;
[0025] The retaining ring is fitted onto the bushing and is located between the dynamic sealing unit and the static sealing unit;
[0026] The retaining ring can abut against the moving ring, restricting the movement of the moving ring.
[0027] In a second aspect, a lithium-ion battery-powered new energy sand mill is disclosed, including the mechanical seal structure described in the first aspect.
[0028] The beneficial effects of the utility model are:
[0029] The mechanical seal structure of this application has sealing components on the atmospheric side and the medium side of the bushing, and the dynamic sealing unit rotates with the bushing and abuts against the static sealing unit to form a sealing pair, thereby playing a sealing role on both the atmospheric side and the medium side, reducing the risk of leakage. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of the present invention;
[0031] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0032] Figure 3 yes Figure 1 Enlarged view of point B in the middle;
[0033] Figure 4 yes Figure 2 Enlarged view of point C in the middle.
[0034] The attached diagram is labeled as follows:
[0035] 10-Sleeve, 20-Gland, 21-Second Protrusion, 22-Mounting Groove, 221-Extension, 30-Dynamic Sealing Unit, 31-Dynamic Ring, 32-Dynamic Ring Seat, 33-Snap Ring, 40-Static Sealing Unit, 41-Static Ring, 42-Elastic Element, 43-Sealing Ring, 44-Support Ring, 441-First Protrusion, 50-Guide Sleeve, 60-Sealing Cavity, 70-Guide Sleeve, 80-Positioning Ring. DETAILED DESCRIPTION
[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. It should also be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0039] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The accompanying drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0040] The mechanical seal structure provided in some embodiments of this application, such as Figures 1-4 As shown, it includes a gland 20, a positioning ring 80, and two sealing assemblies.
[0041] like Figure 1 and Figure 2 As shown, the bushing 10 is fitted onto the shaft and rotates synchronously with the shaft, thus protecting it. Specifically, the bushing 10 and the shaft can be connected by any of the following methods: interference fit, clearance fit, and transition fit. This embodiment does not limit this type of connection.
[0042] like Figures 1-3 As shown, two sealing components are respectively fitted onto both ends of the bushing 10 along its axial direction. One sealing component is located on the media side, and the other on the atmosphere side. The sealing component on the media side directly faces the media inside the sand mill, ensuring that the media does not leak. The sealing component on the atmosphere side isolates external impurities and moisture, preventing them from entering the media side and protecting the internal structure and media of the sand mill from contamination. Simultaneously, the sealing component on the atmosphere side can quickly assume a sealing function in the event of failure of the sealing component on the media side, preventing the media inside the sand mill from leaking into the atmosphere.
[0043] like Figure 1 and Figure 2As shown, the sealing assembly includes a dynamic sealing unit 30 and a static sealing unit 40. The static sealing unit 40 is located close to the gland 20 and cannot rotate relative to the bushing 10. The dynamic sealing unit 30 is located away from the gland 20 and rotates with the bushing 10. The end faces of the dynamic sealing unit 30 and the static sealing unit 40 abut against each other to form a sealing pair.
[0044] During shaft rotation, the dynamic sealing unit 30 rotates with the shaft and abuts against the end face of the static sealing unit 40 to form a sealing pair, achieving a sealing effect through friction. The dynamic sealing unit 30 and static sealing unit 40 on the media side can effectively prevent media leakage inside the sand mill, while the dynamic sealing unit 30 and static sealing unit 40 on the atmosphere side can isolate external impurities and moisture, preventing them from entering the media side.
[0045] like Figure 1 and Figure 2 As shown, the gland 20 is fitted onto the sealing assembly and cannot rotate relative to the bushing 10. The gland 20 provides a base for the installation of the static sealing unit 40, so that the static sealing unit 40 can remain relatively stationary when the bushing 10 rotates.
[0046] like Figure 2 As shown, the gland 20 and the bushing 10 form a sealed cavity 60, which can be filled with a sealing medium to further enhance the sealing effect on the atmospheric side and the medium side.
[0047] Furthermore, such as Figure 2 As shown, the inner wall of the pressure cap 20 has a second protrusion 21 facing the sealing cavity 60, and the two ends of the second protrusion 21 along the axial direction of the bushing 10 are respectively provided with guide sleeves 50.
[0048] The guide sleeve 50 can guide the sealing cooling water in the sealing cavity 60 to flow along a specific path, avoiding the generation of eddies or turbulence around the sealing pair, thereby reducing the scouring and wear of the sealing surface by the sealing cooling water.
[0049] Furthermore, such as Figure 2 As shown, the inner peripheral walls of the two guide sleeves 50 are coplanar with the inner peripheral wall of the second protrusion 21.
[0050] The coplanar design can reduce the turbulence of the sealing cooling water flow between the guide sleeve 50 and the second protrusion 21, further preventing the sealing cooling water from generating eddies or turbulence around the sealing pair, thereby reducing the scouring and wear of the sealing surface by the sealing cooling water.
[0051] like Figure 2 and Figure 3As shown, the static sealing unit 40 includes a static ring 41 and an elastic element 42. The static ring 41 is sleeved on the bushing 10 and cannot rotate relative to the bushing 10; one end of the static ring 41 is connected to the axial side wall of the gland 20 through the elastic element 42, and under the action of the elastic element 42, the other end of the static ring 41 abuts against the dynamic sealing unit 30 to form a sealing pair.
[0052] The stationary ring 41 is a component in the mechanical seal that does not rotate with the shaft. It is opposite to the rotating ring 31 and together they form a sealing pair. Under the action of the elastic element 42, the sealing surface of the stationary ring 41 is tightly fitted with the sealing surface of the rotating sealing unit 30, forming a reliable sealing barrier. Furthermore, the floating design of the stationary ring 41 can also play a buffering role, reducing gap changes caused by wear of the sealing surface.
[0053] like Figure 2 and Figure 4 As shown, the static sealing unit 40 near the medium side also includes a sealing ring 43 and a support ring 44. The end of the gland 20 facing the medium side has an installation groove 22, and the sealing ring 43 is fitted into the installation groove 22. Through its elasticity and the design of the sealing surface, the sealing ring 43 can fit tightly between the installation groove 22 and the adjacent components, effectively preventing the medium from leaking from the seal.
[0054] In this embodiment, the sealing unit near the atmosphere side also includes a sealing ring 43, and the end of the pressure cap 20 facing the atmosphere side is also provided with an installation groove 22, and the sealing ring 43 is fitted into the installation groove 22.
[0055] like Figure 4 As shown, the mounting groove 22 has an extension 221 that extends through the pressure cap 20 toward the medium side. A support ring 44 is fitted inside the mounting groove 22 and is located between the sealing ring 43 and the extension 221. The support ring 44 abuts against the extension 221.
[0056] Since the medium-side material is lithium iron phosphate, ground zirconium beads, etc., the material is relatively viscous. The zirconium beads have a diameter of 0.3-0.6mm, and they easily stick together at this location, thus clogging the mounting groove 22, causing the mounting groove 22 to become stuck, and ultimately causing the stationary ring 41 to become stuck and unable to float. Therefore, a support ring 44 is set up to effectively prevent the material from entering the mounting groove 22.
[0057] like Figure 4 As shown, the support ring 44 has a first protrusion 441 that extends into the extension 221; the outer peripheral wall of the first protrusion 441 is inclined toward the bushing 10 from the atmospheric side toward the medium side.
[0058] The first protrusion 441 is set at an angle to allow the material to slide down naturally, thus avoiding material accumulation.
[0059] In this embodiment, the tilt angle of the first protrusion 441 is 10°; naturally, the tilt angle of the first protrusion 441 is not limited to 10°, and can also be other angles.
[0060] like Figure 2 As shown, the dynamic sealing unit 30 includes a dynamic ring 31, which is sleeved on the bushing 10 and rotates with the bushing 10; the dynamic ring 31 abuts against the static sealing unit 40 to form a sealing pair.
[0061] The rotating ring 31 is a component in the mechanical seal that rotates with the shaft. It is opposite to the static sealing unit 40, together forming a sealing pair. Through the interaction of minute gaps and contact surfaces, the contact surface between the rotating ring 31 and the static sealing unit 40 becomes the key to the seal. Under appropriate pressure and lubrication conditions, the contact surface can ensure that the medium cannot leak through this interface, thereby achieving reliable isolation of the medium.
[0062] Specifically, the rotating ring 31 and the stationary ring 41 are in direct contact, thus forming a sealing pair.
[0063] like Figure 2 As shown, the dynamic sealing unit 30 near the atmosphere also includes a dynamic ring seat 32, which is sleeved on the bushing 10 and rotates with the bushing 10; the dynamic ring seat 32 is connected to the dynamic ring 31 near the atmosphere.
[0064] The rotating ring seat 32 provides a mounting base for the rotating ring 31 near the atmosphere, allowing the rotating ring 31 to rotate synchronously with the bushing 10. The rotating ring 31 located on the medium side is directly fixed to the protrusion of the bushing 10 because of its shape, so there is no need to provide a rotating ring seat 32.
[0065] In this embodiment, the moving ring 31 on the atmospheric side is fixedly connected to the moving ring seat 32 by a cylindrical pin to prevent relative rotation between the moving ring 31 and the moving ring seat 32; the moving ring 31 on the medium side is fixedly connected to the bushing 10 by a cylindrical pin, thereby allowing the moving ring 31 to rotate synchronously with the bushing 10. Naturally, the moving ring 31 can also be connected to the moving ring seat 32 or the bushing 10 in other ways, and this embodiment does not limit this connection.
[0066] like Figure 2 As shown, the dynamic sealing unit 30 near the medium side also includes a retaining ring 33; the retaining ring 33 is sleeved on the bushing 10 and located between the dynamic sealing unit 30 and the static sealing unit 40; the retaining ring 33 can abut against the dynamic ring 31 and restrict the movement of the dynamic ring 31.
[0067] When the sealing cooling water is not in use, the sealing cavity 60 is at normal pressure, while the medium side has a certain pressure, creating a pressure difference between the medium and the sealing cavity 60, which can easily cause the moving ring 31 to be pushed out. Therefore, the retaining ring 33 can effectively solve the above problem.
[0068] It should be noted that the dynamic sealing unit 30 located on the atmospheric side does not need to be equipped with a retaining ring 33 because the atmospheric side is under normal pressure and will not form a pressure difference with the sealing wall, so the dynamic ring 31 will not be pushed out.
[0069] like Figure 1 As shown, the positioning ring 80 is sleeved on the bushing 10 and connected to the gland 20. The positioning ring 80 provides a mounting base for the gland 20, thereby enabling a sealing cavity 60 to be formed between the gland 20 and the bushing 10, and also enabling the gland 20 to cooperate with the static sealing unit 40 and the dynamic sealing unit 30.
[0070] Some embodiments of this application also provide a lithium-ion battery-powered new energy sand mill, including a mechanical seal structure.
[0071] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.
Claims
1. A mechanical seal structure, characterized in that, include: Two sealing components are respectively fitted onto the bushing and located at both ends of the gland axially; The sealing assembly includes a dynamic sealing unit and a static sealing unit. The static sealing unit is located close to the gland and cannot rotate relative to the bushing. The dynamic sealing unit is located away from the gland and rotates with the bushing. The end faces of the dynamic sealing unit and the static sealing unit abut against each other to form a sealing pair. The gland is fitted onto the sealing assembly and cannot rotate relative to the bushing; the gland and the bushing form a sealed cavity.
2. The mechanical seal structure according to claim 1, characterized in that, The static sealing unit includes a static ring and an elastic element; The stationary ring is sleeved on the bushing and cannot rotate relative to the bushing; one end of the stationary ring is connected to the axial side wall of the gland through the elastic element, and under the action of the elastic element, the other end of the stationary ring abuts against the dynamic sealing unit to form a sealing pair.
3. The mechanical seal structure according to claim 2, characterized in that, The static sealing unit near the medium side also includes a sealing ring and a support ring; The end of the gland facing the medium side has an installation groove, and the sealing ring is fitted inside the installation groove; The mounting groove has an extension that extends through the gland toward the medium side; The support ring is fitted inside the mounting groove and is located between the sealing ring and the extension; the support ring abuts against the extension.
4. The mechanical seal structure according to claim 3, characterized in that, The support ring has a first protrusion that extends into the extension; The outer peripheral wall of the first protrusion is inclined toward the bushing from the atmospheric side toward the medium side.
5. A mechanical seal structure according to claim 1, characterized in that, The dynamic sealing unit includes a dynamic ring, which is sleeved on the bushing and rotates with the bushing; the dynamic ring abuts against the static sealing unit to form a sealing pair; The dynamic sealing unit near the atmosphere also includes a dynamic ring seat, which is sleeved on the bushing and rotates with the bushing; the dynamic ring seat is connected to the dynamic ring near the atmosphere.
6. The mechanical seal structure according to claim 1, characterized in that, It also includes a positioning ring, which is sleeved on the bushing and connected to the pressure cap.
7. A mechanical seal structure according to claim 1, characterized in that, It also includes two guide sleeves, which are respectively fitted onto the bushing; The inner wall of the gland has a second protrusion facing the sealing cavity, and the two bushings are respectively installed at both ends of the second protrusion along the axial direction of the bushings.
8. A mechanical seal structure according to claim 7, characterized in that, The inner peripheral walls of the two guide sleeves are coplanar with the inner peripheral wall of the second protrusion.
9. A mechanical seal structure according to claim 5, characterized in that, The dynamic sealing unit near the medium side also includes a retaining ring; The retaining ring is fitted onto the bushing and is located between the dynamic sealing unit and the static sealing unit; The retaining ring can abut against the moving ring, restricting the movement of the moving ring.
10. A lithium-ion battery-powered new energy sand mill, characterized in that, Includes the mechanical seal structure as described in any one of claims 1-9.