Mechanical seal convenient to cool

Abstract

The utility model provides a mechanical seal convenient to cool, which relates to the technical field of mechanical seals and comprises a moving ring, a static ring and a compensation spring, a first cooling ring is detachably mounted on the outer wall of the static ring close to a convex sealing end face, and a second cooling ring is detachably arranged on the outer wall of the moving ring close to a sinking sealing end face. The first cooling ring and the second cooling ring are the same in structure, each cooling ring comprises an inner ring, an outer ring and a middle ring plate, the inner rings and the outer rings are concentrically arranged, cooling channels are formed between the inner rings and the outer rings, and heat dissipation fins are symmetrically arranged in the cooling channels; the first cooling ring is detachably installed on the outer wall of the static ring, the second cooling ring is detachably installed on the outer wall of the movable ring, and the inner ring of the first cooling ring and the inner ring of the second cooling ring can transmit heat generated at the end face position where the static ring and the movable ring are combined to the heat dissipation fins for efficient heat dissipation. And two groups of cooling channels are arranged on the second cooling ring, and heat dissipation fins are arranged in the two groups of cooling channels, so that the heat dissipation efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a mechanical seal that is easy to cool. Background Technology

[0002] A mechanical seal is a device that prevents fluid leakage by maintaining a tight seal between at least one pair of end faces perpendicular to the axis of rotation, under the action of fluid pressure, the elastic force (or magnetic force) of the compensating mechanism, and the cooperation of auxiliary seals. Simply put, it relies on the compression of the stationary and rotating rings at their end faces, achieving axial end face sealing under the action of fluid pressure and the spring pressure of the compensating mechanism, thereby preventing fluid leakage. The stationary ring is the part that remains stationary in the seal and does not rotate with the shaft; the rotating ring is the part that rotates with the shaft and forms a sealing surface with the stationary ring; the spring provides elastic force, keeping the stationary and rotating rings tightly fitted.

[0003] When the stationary and rotating rings are pressed together, friction generates heat between them. If not cooled in time, this can cause wear between the stationary and rotating rings, thus affecting the sealing effect. Therefore, this invention proposes a mechanical seal that is easy to cool, to address the shortcomings of the prior art. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a mechanical seal that facilitates cooling. By detachably installing a first cooling ring on the outer wall of the stationary ring and a second cooling ring on the outer wall of the rotating ring, the inner rings of the first and second cooling rings can transfer the heat generated at the end face where the stationary and rotating rings meet to the heat dissipation fins for efficient heat dissipation. Furthermore, the second cooling ring has two sets of cooling channels, each with heat dissipation fins, which can effectively improve heat dissipation efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mechanical seal for easy cooling includes a rotating ring, a stationary ring, and a compensating spring. One end of the rotating ring has a compensating spring, and the other end has a recessed sealing face. One end of the stationary ring has a raised sealing face that matches the recessed sealing face. A first sealing ring is provided on the inner wall of one end of the rotating ring, and a second sealing ring is provided on the inner wall of one end of the stationary ring. A first cooling ring is detachably installed on the outer wall of the stationary ring near the raised sealing face, and a second cooling ring is detachably installed on the outer wall of the rotating ring near the recessed sealing face. The first and second cooling rings have identical structures, each including an inner ring, an outer ring, and a middle ring plate. The inner and outer rings are concentrically arranged, and the middle ring plate is positioned between the inner and outer rings, forming a cooling channel. Heat dissipation fins are symmetrically arranged within the cooling channel.

[0007] A further improvement is that the middle ring plate of the first cooling ring is located below the inner ring and the outer ring, and the inner ring, the outer ring and the middle ring plate of the first cooling ring form a set of cooling channels.

[0008] A further improvement is that the middle ring plate of the second cooling ring is located in the middle between the inner ring and the outer ring, and the inner ring, outer ring and middle ring plate of the second cooling ring form two sets of cooling channels.

[0009] Further improvements include: the inner ring is a copper heat-conducting ring, the outer wall of the inner ring is symmetrically provided with protrusions, the protrusions are located between two adjacent sets of heat dissipation fins, the inner wall of the inner ring is provided with positioning grooves adapted to the positions of the protrusions, and the outer walls of the moving ring and the stationary ring are both provided with positioning strips adapted to the positioning grooves.

[0010] A further improvement is that: the protrusion is provided with a fixing bolt, the positioning strip is provided with a fixing hole, and the fixing bolt passes through the inner wall of the inner ring and connects with the fixing hole.

[0011] A further improvement is that the heat dissipation fins are installed on the outer wall of the inner ring, a heat dissipation gap is formed between the heat dissipation fins and the cooling channel, the wall thickness of the inner ring is half the wall thickness of the outer ring, and the width of the heat dissipation gap is twice the wall thickness of the outer ring.

[0012] The beneficial effects of this utility model are as follows: By detachably installing a first cooling ring on the outer wall of the stationary ring and a second cooling ring on the outer wall of the moving ring, the inner rings of the first and second cooling rings can transfer the heat generated at the end face where the stationary ring and the moving ring are joined to the heat dissipation fins for efficient heat dissipation. Furthermore, the second cooling ring has two sets of cooling channels, and heat dissipation fins are provided in both sets of cooling channels, which can effectively improve the heat dissipation efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional disassembled schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a three-dimensional schematic diagram of the static ring structure of this utility model;

[0015] Figure 3 This is a three-dimensional schematic diagram of the dynamic ring structure of this utility model;

[0016] Figure 4 This is a three-dimensional schematic diagram of the first cooling ring structure of this utility model;

[0017] Figure 5 This is a three-dimensional schematic diagram of the second cooling ring structure of this utility model;

[0018] Figure 6 This is a cross-sectional schematic diagram of the first cooling ring structure of this utility model;

[0019] Figure 7 This is a cross-sectional schematic diagram of the second cooling ring structure of this utility model.

[0020] The components are: 1. Moving ring; 2. Stationary ring; 3. Compensating spring; 4. Recessed sealing end face; 5. Raised sealing end face; 6. First sealing ring; 7. Second sealing ring; 8. First cooling ring; 9. Second cooling ring; 10. Inner ring; 11. Outer ring; 12. Intermediate ring plate; 13. Cooling channel; 14. Heat dissipation fins; 15. Raised block; 16. Positioning groove; 17. Positioning strip; 18. Fixing bolt; 19. Fixing hole. Detailed Implementation

[0021] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0022] according to Figure 1-7 As shown, this embodiment proposes a mechanical seal that facilitates cooling, including a rotating ring 1, a stationary ring 2, and a compensating spring 3. One end of the rotating ring 1 is provided with the compensating spring 3, and the other end of the rotating ring 1 is provided with a recessed sealing end face 4. One end of the stationary ring 2 is provided with a raised sealing end face 5, which is adapted to the recessed sealing end face 4. A first sealing ring 6 is provided on the inner wall of one end of the rotating ring 1, and a second sealing ring 7 is provided on the inner wall of one end of the stationary ring 2. A second sealing ring 7 is provided on the outer wall of the stationary ring 2 near the raised sealing end face 5. A first cooling ring 8 is detachably installed, and a second cooling ring 9 is detachably installed on the outer wall of the moving ring 1 near the sunken sealing end face 4. The first cooling ring 8 and the second cooling ring 9 have the same structure, both including an inner ring 10, an outer ring 11 and an intermediate ring plate 12. The inner ring 10 and the outer ring 11 are concentrically arranged, and the intermediate ring plate 12 is arranged between the inner ring 10 and the outer ring 11. A cooling channel 13 is formed between the inner ring 10 and the outer ring 11, and heat dissipation fins 14 are symmetrically arranged in the cooling channel 13.

[0023] When assembling and using the mechanical seal of this utility model that facilitates cooling, first install the outer wall of the first cooling ring 8 and the stationary ring 2, and then install the second cooling ring 9 and the outer wall of the moving ring 1. During cooling, the heat generated by the contact between the end faces of the moving ring 1 and the stationary ring 2 will be transferred to the inner ring 10, and then transferred from the inner ring 10 to the heat dissipation fins 14 for rapid heat dissipation and cooling.

[0024] The intermediate ring plate 12 of the first cooling ring 8 is located below the inner ring 10 and the outer ring 11. The inner ring 10, outer ring 11, and intermediate ring plate 12 of the first cooling ring 8 form a cooling channel 13. The intermediate ring plate 12 of the second cooling ring 9 is located in the middle between the inner ring 10 and the outer ring 11. The inner ring 10, outer ring 11, and intermediate ring plate 12 of the second cooling ring 9 form two sets of cooling channels 13. Under normal circumstances, the height of the moving ring 1 is greater than the height of the stationary ring 2. Therefore, the second cooling ring 9 can be higher than the height of the first cooling ring 8. Setting two sets of cooling channels 13 within the second cooling ring 9 can improve cooling efficiency.

[0025] The inner ring 10 is a copper heat-conducting ring. Symmetrical protrusions 15 are provided on the outer wall of the inner ring 10, located between two adjacent sets of heat dissipation fins 14. Positioning grooves 16, adapted to the positions of the protrusions 15, are provided on the inner wall of the inner ring 10. Positioning strips 17, adapted to the positioning grooves 16, are provided on the outer walls of both the moving ring 1 and the stationary ring 2. Copper has the advantage of rapid thermal conductivity, enabling the rapid transfer of heat generated on the moving ring 1 and stationary ring 2 to the inner ring 10, which is then dissipated through the heat dissipation fins 14 to achieve cooling and mechanical sealing. The protrusion 15 is provided with a fixing bolt 18, and the positioning strip 17 is provided with a fixing hole 19. The fixing bolt 18 passes through the inner wall of the inner ring 10 and connects to the fixing hole 19. This arrangement allows for the disassembly and installation of the first cooling ring 8 and the stationary ring 2, as well as the disassembly and installation of the second cooling ring 9 and the moving ring 1. During installation, the positioning groove 16 and the positioning strip 17 are fitted together to achieve pre-positioning, facilitating the subsequent installation of the first cooling ring 8 and the second cooling ring 9 onto the outer walls of the stationary ring 2 and the moving ring 1, respectively, using the fixing bolt 18. The heat dissipation fins 14 are installed on the outer wall of the inner ring 10, forming a heat dissipation gap between the heat dissipation fins 14 and the cooling channel 13. This gap allows for the rapid dissipation of heat emitted by the heat dissipation fins 14. The wall thickness of the inner ring 10 is half the wall thickness of the outer ring 11. This design increases the speed of heat transfer, allowing heat from the moving ring and stationary ring 2 to be quickly transferred to the inner ring 10 and dissipated. The width of the heat dissipation gap is twice the wall thickness of the outer ring 11.

[0026] This invention features a first cooling ring 8 detachably mounted on the outer wall of the stationary ring 2 and a second cooling ring 9 detachably mounted on the outer wall of the moving ring 1. The inner rings of the first cooling ring 8 and the second cooling ring 9 can transfer the heat generated at the end face where the stationary ring and the moving ring meet to the heat dissipation fins 14 for efficient heat dissipation. Furthermore, the second cooling ring 9 has two sets of cooling channels 13, and heat dissipation fins 14 are provided in both sets of cooling channels 13, which can effectively improve heat dissipation efficiency.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical seal that facilitates cooling, comprising a rotating ring (1), a stationary ring (2), and a compensating spring (3), wherein the rotating ring (1) is provided with a compensating spring (3) at one end, and a recessed sealing end face (4) is provided at the other end of the rotating ring (1), and a raised sealing end face (5) is provided at one end of the stationary ring (2), the raised sealing end face (5) being adapted to the recessed sealing end face (4), a first sealing ring (6) is provided on the inner wall of one end of the rotating ring (1), and a second sealing ring (7) is provided on the inner wall of one end of the stationary ring (2), characterized in that: A first cooling ring (8) is detachably installed on the outer wall of the stationary ring (2) near the raised sealing end face (5), and a second cooling ring (9) is detachably installed on the outer wall of the moving ring (1) near the sunken sealing end face (4). The first cooling ring (8) and the second cooling ring (9) have the same structure, both including an inner ring (10), an outer ring (11) and a middle ring plate (12). The inner ring (10) and the outer ring (11) are concentrically arranged, and the middle ring plate (12) is arranged between the inner ring (10) and the outer ring (11). A cooling channel (13) is formed between the inner ring (10) and the outer ring (11), and heat dissipation fins (14) are symmetrically arranged in the cooling channel (13).

2. The mechanical seal for easy cooling according to claim 1, characterized in that: The middle ring plate (12) of the first cooling ring (8) is located below the inner ring (10) and the outer ring (11). The inner ring (10), the outer ring (11) and the middle ring plate (12) of the first cooling ring (8) form a set of cooling channels (13).

3. The mechanical seal for easy cooling according to claim 2, characterized in that: The middle ring plate (12) of the second cooling ring (9) is located in the middle between the inner ring (10) and the outer ring (11). The inner ring (10), outer ring (11) and middle ring plate (12) of the second cooling ring (9) form two sets of cooling channels (13).

4. The mechanical seal for easy cooling according to claim 3, characterized in that: The inner ring (10) is a copper heat-conducting ring. The outer wall of the inner ring (10) is symmetrically provided with protrusions (15). The protrusions (15) are located between two adjacent sets of heat dissipation fins (14). The inner wall of the inner ring (10) is provided with positioning grooves (16) that are adapted to the position of the protrusions (15). The outer walls of the moving ring (1) and the stationary ring (2) are both provided with positioning strips (17) that are adapted to the positioning grooves (16).

5. The mechanical seal for easy cooling according to claim 4, characterized in that: The protrusion (15) is provided with a fixing bolt (18), and the positioning strip (17) is provided with a fixing hole (19). The fixing bolt (18) passes through the inner wall of the inner ring (10) and is connected to the fixing hole (19).

6. The mechanical seal for easy cooling according to claim 1, characterized in that: The heat dissipation fins (14) are installed on the outer wall of the inner ring (10), and a heat dissipation gap is formed between the heat dissipation fins (14) and the cooling channel (13). The wall thickness of the inner ring (10) is half the wall thickness of the outer ring (11), and the width of the heat dissipation gap is twice the wall thickness of the outer ring (11).

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