Combined sealing water-cooled mechanical seal structure

Abstract

The application relates to the technical field of mechanical seals, and discloses a combined sealing water-cooling mechanical seal structure, which comprises a rear bearing seat end, a front bearing seat end, a positioning hole and a shaft groove. The inner sides of the rear bearing seat end and the front bearing seat end are provided with a pressure-bearing bearing mechanism which is used for replacing traditional bearings to reduce wear caused by vertical stress. The inner side of the pressure-bearing bearing mechanism is provided with a water-cooling cooling mechanism which is used for assisting heat dissipation. The periphery of the water-cooling cooling mechanism is provided with a sealing mechanism which is used for sealing and packaging structure. The pressure-bearing bearing mechanism comprises an inner bearing seat end, the two sides of the inner bearing seat end are provided with matching ring grooves, the side surfaces of the matching ring grooves are slidably connected with rotating shaft rings, and the two sides of the inner bearing seat end are slidably connected with eight roller shaft columns. The application enhances oil distribution uniformity, reduces local dry friction and heat accumulation, thereby comprehensively improving transmission efficiency, reducing maintenance frequency, and effectively preventing jamming and early fatigue failure.

Description

Technical Field

[0001] This invention relates to the field of mechanical seal technology, specifically to a combined sealing water-cooled mechanical seal structure. Background Technology

[0002] In the field of mechanical seal technology, during the operation of rotating equipment, the pressure bearing components not only bear the combined axial and radial loads, but also face the risk of seal failure caused by frictional heat generated by high-speed rotation and fluctuations in medium pressure. Traditional sealing structures often rely on a single rubber ring or metal end face to achieve isolation. However, under long-term operation, the lubrication layer decays, heat deformation accumulates, and the assembly gap is uneven, which often leads to an increase in leakage rate, accelerated wear, and a shortened maintenance cycle. At the same time, relying solely on the natural heat dissipation of the shell or external auxiliary heat dissipation methods is difficult to effectively and continuously remove the heat accumulated inside the bearing cavity, which accelerates the aging of the sealing elements and thus affects the overall reliability and safety of the equipment. Therefore, a structural solution that can take into account the synergistic effects of load bearing, lubrication, heat dissipation, and sealing is needed to meet the comprehensive protection requirements under complex working conditions.

[0003] Patent CN222894527U discloses a combined sealed water-cooled bearing housing. The combined sealed water-cooled bearing housing includes: a base plate, a worktable fixedly mounted on the top of the base plate, a lower bearing seat fixedly mounted on the top of the worktable, and an upper bearing seat mounted on the top of the lower bearing seat. The combined sealed water-cooled bearing housing provided by this patent allows for the circulation of cooling water through the interaction of components such as water pump two, water tank, condensation device, water pump one, water pipe two, water inlet pipe one, annular cavity two, water outlet pipe two, connecting pipe, water inlet pipe two, annular cavity one, water pipe one, and water pipe one, effectively saving water resources. By moving the rectangular block back and forth, the scraper cleans the scale adhering to the inner wall of annular cavity two and the inner wall of annular cavity one, improving the thermal conductivity of the inner walls of annular cavity two and annular cavity one, which is conducive to heat exchange. However, this patent also has the problem of poor pressure-bearing capacity due to increased wear of bearing balls caused by vertical pressure during rotation. Therefore, a combined sealed water-cooled mechanical seal structure is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a combined sealing water-cooled mechanical seal structure to address the shortcomings of the prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a combined sealing water-cooled mechanical seal structure, including a rear bearing end, a front bearing end, a positioning hole, and a shaft groove, wherein the rear bearing end and the front bearing end are provided with a pressure bearing mechanism for replacing the traditional bearing to reduce wear by vertical force. The inner side of the pressure bearing mechanism is provided with a water-cooling mechanism for auxiliary heat dissipation. A sealing mechanism for sealing and encapsulating the water-cooling mechanism is provided around it. The pressure bearing mechanism includes an inner bearing end, with matching annular grooves on both sides of the inner bearing end. A rotating shaft ring is slidably connected to the side of each matching annular groove. Eight roller columns are slidably connected to both sides of the inner bearing end. An inner shallow annular groove is formed on the inner side of the inner bearing end. Roller annular grooves are formed on the side walls of the rear bearing end and the front bearing end. A flow groove end is formed on the inner wall of the inner shallow annular groove.

[0006] According to the above technical solution, an inner shaft ring is fixedly connected to the inner side of the shaft at the inner bearing end, and an oil supply pipe is provided on the side of the rear bearing end, with a stud threaded to the inner wall of the end of the oil supply pipe.

[0007] According to the above technical solution, the two rotating shaft rings are respectively fixedly connected to the sides of the rear bearing end and the front bearing end, and the flow groove end extends from the inner wall of the inner shallow ring groove to the outer wall of the inner bearing end.

[0008] According to the above technical solution, the water-cooling cooling mechanism includes an input pipe, a flexible tube fixedly connected to the end of the input pipe, an output pipe fixedly connected to the end of the flexible tube away from the input pipe, multiple threaded grooves opened on the inner side of the inner bearing end, a screw threadedly connected to the inner side of each threaded groove, a rotating block threadedly connected to the other end of the screw, a pressure roller rotatably connected to the inner side of the rotating block, a semi-ring provided on the outer side of the flexible tube, three positioning protrusions fixedly connected to the outer side of the semi-ring, a connecting ring provided on the outer side of the positioning protrusions, and wedge grooves opened on the inner walls of both the rear bearing end and the front bearing end.

[0009] According to the above technical solution, the connecting ring is fixedly connected to the input pipe and the output pipe, the groove is adapted to the shape of the positioning protrusion, and the pressure roller is in contact with the hose.

[0010] According to the above technical solution, the sealing mechanism includes a mating block, a slider groove is provided on the side of the mating block, an inclined slider is slidably connected to the inner side of the slider groove, and a positioning screw is threadedly connected to the side of the inclined slider.

[0011] According to the above technical solution, the sealing mechanism further includes a rubber pad, which is disposed on the top of the rear bearing end or the front bearing end. A sealing groove is provided on the top of the rear bearing end or the front bearing end. A sealing ring groove is provided on the inner side of the rear bearing end or the front bearing end. A wedge groove is provided at each of the four corners of the side of the front bearing end. An inclined block is fixedly connected to the inner side of each wedge groove. Two mounting holes are provided on both sides of the front bearing end.

[0012] According to the above technical solution, the positioning screw is threadedly connected to the mating block, the sealing groove and the outer shape of the rubber pad are mutually matched, the sealing ring groove and the outer shape of the connecting ring are mutually matched, and the mating block groove and the outer shape of the mating block are mutually matched.

[0013] The present invention, by adopting the above technical solution, can bring the following beneficial effects: This combined water-cooled mechanical seal structure achieves reasonable force distribution and load-bearing enhancement through structural layering, and continuous immersion lubrication of rolling contact surfaces and multiple friction pairs through graded oil circuit guidance. Furthermore, the use of roller column movement to drive lubricant circulation can enhance the uniformity of oil distribution, reduce local dry friction and heat accumulation, thereby comprehensively improving transmission efficiency, reducing maintenance frequency, and effectively preventing jamming and early fatigue failure.

[0014] This combined water-cooled mechanical seal structure utilizes multiple pressure rollers to apply pressure alternately, ensuring continuous and stable water intake and drainage while avoiding hose fatigue damage caused by continuous single-point compression. Simultaneously, heat generated by friction within the rear bearing end is transferred through the semi-circular hose connected to the positioning protrusion. Heat from the lubricant in contact with the hose is also carried away by the water flow within the hose. The thermal conductivity of the hose wall simultaneously removes excess heat from the rear bearing end and the lubricant. This water-cooled auxiliary heat dissipation effectively reduces overall temperature rise, preventing lubricant overheating and deterioration, and seal aging. Furthermore, it enhances the circulation and renewal speed of the lubricant within the internal channels, avoiding lubrication dead zones and deposit accumulation. This comprehensively improves pumping efficiency, heat dissipation capacity, and lubrication reliability, extending the overall service life of the machine under continuous operation.

[0015] This combined sealed water-cooled mechanical seal structure further enhances local sealing by inserting a rubber gasket into the sealing tube groove, preventing the leakage of lubricant or water. Subsequently, the front bearing end achieves rapid alignment of the upper and lower shells through the splicing of the wedge groove and the wedge block. After the inclined block is inserted into the slider groove, the positioning screw is turned to push the inclined slider. The wedge force generated by the inclined surface can uniformly and controllably reduce the connection gap, avoiding damage caused by hard knocks and allowing fine adjustment of the sealing pressure according to the actual assembly situation. This comprehensively improves assembly efficiency, positioning accuracy, sealing reliability, and structural consistency, and effectively reduces the risk of vibration and leakage caused by loosening or uneven gaps during operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of the present invention; Figure 3 This is a schematic diagram showing the structural distribution of the mechanism in this invention; Figure 4 This is a schematic diagram of the pressure bearing mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the inner bearing end of the present invention; Figure 6 This is a schematic diagram of the water-cooling mechanism of the present invention; Figure 7 For the present invention Figure 6 A magnified structural diagram of A in the middle; Figure 8 This is a schematic diagram of the sealing mechanism of the present invention.

[0017] In the diagram: 1. Rear bearing end; 2. Front bearing end; 3. Positioning hole; 4. Shaft groove; 5. Pressure bearing mechanism; 501. Inner bearing end; 502. Fitting ring groove; 503. Rotary collar; 504. Roller column; 505. Inner shallow ring groove; 506. Roller ring groove; 507. Flow groove end; 508. Inner collar; 509. Oil supply pipe; 510. Stud; 6. Water cooling mechanism; 601. Input pipe; 602. Flexible hose; 603. Threaded groove; 604. Screw; 605. Rotating block; 606. Pressure roller; 607. Half ring; 608. Connecting ring; 609. Positioning protrusion; 610. Wed groove; 611. Output pipe; 7. Sealing mechanism; 701. Wed block; 702. Wed groove; 703. Sealing ring groove; 704. Rubber pad; 705. Sealing pipe groove; 706. Inclined slider; 707. Positioning screw; 708. Slider groove; 709. Inclined block; 710. Mounting hole. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 An embodiment of the present invention is: a combined sealing water-cooled mechanical seal structure, including a rear bearing end 1, a front bearing end 2, a positioning hole 3, and a shaft groove 4. The rear bearing end 1 and the front bearing end 2 are provided with a pressure bearing mechanism 5 for replacing the traditional bearing to reduce wear by vertical force. The inner side of the pressure bearing mechanism 5 is provided with a water-cooling mechanism 6 for auxiliary heat dissipation; A sealing mechanism 7 for sealing and encapsulating the structure is provided around the water-cooled cooling mechanism 6; The pressure bearing mechanism 5 includes an inner bearing end 501. Both sides of the inner bearing end 501 are provided with matching annular grooves 502. A rotating shaft ring 503 is slidably connected to the side of each matching annular groove 502. Eight roller columns 504 are slidably connected to both sides of the inner bearing end 501. An inner shallow annular groove 505 is provided on the inner side of the inner bearing end 501. Roller annular grooves 506 are provided on the side walls of the rear bearing end 1 and the front bearing end 2. A flow groove end 507 is provided on the inner wall of the inner shallow annular groove 505.

[0020] An inner bearing ring 508 is fixedly connected to the inner side of the shaft of the inner bearing end 501, and an oil supply pipe 509 is provided on the side of the rear bearing end 1. A stud 510 is threadedly connected to the inner wall of the end of the oil supply pipe 509.

[0021] Two rotating collars 503 are fixedly connected to the sides of the rear bearing end 1 and the front bearing end 2, respectively. The flow groove end 507 extends from the inner wall of the inner shallow annular groove 505 to the outer wall of the inner bearing end 501. In use, after the rear bearing end 1 and the front bearing end 2 are installed and positioned through the positioning holes 3, the inner bearing end 501 is rotated by driving the inner collar 508. The inner bearing end 501 is rotated along the inner wall of the rear bearing end 1 or the front bearing end 2 by the rollers 504 on both sides. The inner bearing ring 508 engages with the roller ring groove 506 for rolling. When the inner bearing ring 508 applies pressure to the inner bearing end 501 from top to bottom along the axial direction, the force on the inner bearing ring 508 is transmitted to the lower roller column 504 through the inner bearing end 501. The roller column 504 then transmits the force to the contacting rear bearing end 1 through its bottom surface. The roller column 504 reduces wear under vertical pressure by increasing the vertical bearing area. At the same time, oil is transported through the oil pipe 509. The lubricating oil first enters the shallow inner annular groove 505 inside the inner bearing end 501, and then enters the gap around the roller column 504 through the flow groove end 507 connected to the shallow inner annular groove 505, lubricating the roller column 504. Then, it enters the roller annular groove 506 through the gap around the roller column 504. When the inner bearing end 501 is rotating, the roller column 504 moves along the inner side of the roller annular groove 506, which simultaneously pushes the lubricating oil inside the roller annular groove 506 to flow. This achieves reasonable force flow dispersion and load-bearing enhancement through structural layering, and continuous immersion lubrication of the rolling contact surface and multiple friction pairs through oil circuit graded guidance. Furthermore, the movement of the roller column 504 drives the circulation of lubricating oil, which can enhance the uniformity of oil distribution, reduce local dry friction and heat accumulation, thereby comprehensively improving transmission efficiency, reducing maintenance frequency, and effectively preventing jamming and early fatigue failure.

[0022] The water-cooled cooling mechanism 6 includes an input pipe 601, with a flexible hose 602 fixedly connected to the end of the input pipe 601. An output pipe 611 is fixedly connected to the end of the flexible hose 602 away from the input pipe 601. Multiple threaded grooves 603 are opened on the inner side of the inner bearing end 501. A screw 604 is threadedly connected to the inner side of each threaded groove 603. A rotating block 605 is threadedly connected to the other end of the screw 604. A pressure roller 606 is rotatably connected to the inner side of the rotating block 605. A semi-ring 607 is provided on the outer side of the flexible hose 602. Three positioning protrusions 609 are fixedly connected to the outer side of the semi-ring 607. A connecting ring 608 is provided on the outer side of the positioning protrusions 609. A wedge groove 610 is opened on the inner wall of both the rear bearing end 1 and the front bearing end 2.

[0023] The connecting ring 608 is fixedly connected to the input pipe 601 and the output pipe 611. The groove 610 is adapted to the shape of the positioning protrusion 609. The pressure roller 606 is in contact with the hose 602. When the inner bearing end 501 is in a rotating state, the inner bearing end 501 rotates together with the rotating block 605 through the screw 604. During the rotation of the rotating block 605, the connected pressure roller 606 is driven to contact the outer hose 602. The pressure roller 606 is in a semi-rotating state. Pressurizing the hose 602 inside the ring 607 causes water to be drawn into the hose 602 from the pipe connected to the inlet pipe 601. Multiple pressure rollers 606 alternately pressurize the hose 602, expelling air and creating a negative pressure inside. The heat generated at the rear bearing end 1 is transferred to the hose 602 through the semi-ring 607 connected to the positioning protrusion 609. Simultaneously, the heat from the lubricating fluid in contact with the hose 602 is also discharged through the metal outlet pipe 611 by the water flowing through the hose 602. Furthermore, along with the internal... The rotating block 605, which moves together with the bearing end 501, can also drive the lubricant flow in the inner shallow annular groove 505. By using multiple pressure rollers 606 to apply pressure alternately, continuous and stable water intake and drainage are ensured, while avoiding fatigue damage to the hose caused by continuous single-point squeezing. At the same time, the heat generated by friction in the rear bearing end 1 is transferred to the hose 602 through the semi-ring 607 connected to the positioning protrusion 609. The heat of the lubricant in contact with the hose 602 can also be carried away by the water flow in the hose 602. The thermal conductivity of the hose 602 wall simultaneously removes excess heat from the rear bearing end 1 and the lubricant. The water-cooled auxiliary heat dissipation effect effectively reduces the overall temperature rise, prevents the lubricant from overheating and deteriorating, and prevents the seals from aging. In addition, it further enhances the circulation and renewal speed of the lubricant in the internal channels, avoids lubrication dead zones and deposit accumulation, thereby comprehensively improving pumping efficiency, heat dissipation capacity and lubrication reliability, and extending the service life of the whole machine under continuous operation.

[0024] The sealing mechanism 7 includes a mating block 701, a slider groove 708 is provided on the side of the mating block 701, an inclined slider 706 is slidably connected to the inner side of the slider groove 708, and a positioning screw 707 is threadedly connected to the side of the inclined slider 706.

[0025] The sealing mechanism 7 also includes a rubber pad 704, which is set on the top of the rear bearing end 1 or the front bearing end 2. The top of the rear bearing end 1 or the front bearing end 2 is provided with a sealing groove 705. The inner side of the rear bearing end 1 or the front bearing end 2 is provided with a sealing ring groove 703. The four corners of the side of the front bearing end 2 are provided with wedge grooves 702. The inner side of each wedge groove 702 is fixedly connected with an inclined block 709. Two mounting holes 710 are provided on both sides of the front bearing end 2.

[0026] The positioning screw 707 is threadedly connected to the mating block 701. The sealing groove 705 and the rubber gasket 704 are structurally compatible. The sealing ring groove 703 and the connecting ring 608 are structurally compatible. The mating block groove 702 and the mating block 701 are structurally compatible. During installation, first place the rear bearing end 1 at the bottom, and place the roller column 504 in the corresponding grooves at the bottom and top of the inner bearing end 501, so that the bottom roller column 504 fits against the inner roller ring groove 506 of the rear bearing end 1. Then, the connecting ring 608 is mated with the sealing ring groove 703 on the rear bearing end 1. The flexible hose 602, connected to the input pipe 601 and the output pipe 611, is fitted inside the inner shallow annular groove 505 and abuts against the pressure roller 606 of the rotating block 605. Then, the semi-ring 607 is engaged with the wedge groove 610 on the inner bearing end 501 via the positioning protrusion 609. The semi-ring 607 provides support for the hose 602 under pressure, and the wedge groove 610 engaging with the positioning protrusion 609 positions the semi-ring 607. Simultaneously, the rubber pad 704 is secured within the sealing groove 705. After completion, the front bearing end 2 is placed over the rear bearing end 1, and the front bearing end 2 is connected to the rear bearing end 1 via the wedge grooves 702 at the four corners of the front bearing end 2. The mating block 701 on end 1 engages and splices, while the inclined fixing block 709 inside the mating block groove 702 is inserted into the slider groove 708. Using a screwdriver or similar tool, the positioning screw 707 is turned by inserting it into the mounting hole 710. The positioning screw 707 rotates with the mating block 701 and pushes the inclined slider 706 inside the slider groove 708 through its threaded structure. The inclined slider 706 contacts the inclined surface of the inclined fixing block 709, reducing the connection gap between the rear bearing end 1 and the front bearing end 2, achieving a sealed seal. The rubber gasket 704, inserted into the sealing tube groove 705, further enhances the local sealing, preventing lubricant or... Water seepage occurs, and the front bearing end 2 is spliced ​​with the wedge groove 702 and the wedge block 701 to achieve rapid alignment of the upper and lower shells. After the inclined fixing block 709 is inserted into the slider groove 708, the positioning screw 707 is turned to push the inclined slider 706. The wedge force generated by the inclined surface can uniformly and controllably reduce the connection gap, which avoids damage caused by hard knocking and can finely adjust the sealing pressure according to the actual assembly situation. This comprehensively improves the assembly efficiency, positioning accuracy, sealing reliability and structural consistency, and effectively reduces the risk of vibration and leakage caused by loosening or uneven gaps during operation.

[0027] Working principle: In use, after the rear bearing end 1 and the front bearing end 2 are installed and positioned through the positioning hole 3, the inner bearing end 501 is rotated by the transmission of the inner ring 508. The inner bearing end 501 rolls along the inner side of the rear bearing end 1 or the front bearing end 2 through the rollers 504 on both sides. When the inner ring 508 applies pressure to the inner bearing end 501 from top to bottom along the axial direction, the force on the inner ring 508 is transmitted to the rollers 504 below through the inner bearing end 501. The rollers 504 then transmit the force to the contacting rear bearing end 1 through their bottom surfaces. 4. By increasing the vertical bearing area, wear caused by vertical pressure is reduced. At the same time, lubricating oil is delivered through the oil pipe 509. The lubricating oil first enters the inner shallow annular groove 505 on the inner side of the inner bearing end 501, and then enters the gap around the roller column 504 through the flow groove end 507 connected to the inner shallow annular groove 505, thus lubricating the roller column 504. Then, it enters the roller annular groove 506 through the gap around the roller column 504. When the inner bearing end 501 is in a rotating state, the roller column 504 moves along the inner side of the roller annular groove 506 and pushes the lubricating fluid inside the roller annular groove 506 to flow. When the inner bearing end 501 is in a rotating state, the inner bearing end 501 rotates together with the rotating block 605 via the screw 604. During the rotation of the rotating block 605, the connected pressure roller 606 is driven to contact the outer hose 602. The pressure roller 606 applies pressure to the hose 602 located inside the semi-ring 607, causing the pipe connected to the input pipe 601 to draw water into the hose 602. The hose 602 is alternately pressurized by multiple pressure rollers 606 to expel air and create a negative pressure inside. The heat generated by the rear bearing end 1 is transferred to the hose 602 through the semi-ring 607 connected to the positioning protrusion 609. At the same time, the heat of the lubricating fluid in contact with the hose 602 can also be discharged by the water in the hose 602 through the metal output pipe 611. In addition, the rotating block 605, which moves together with the inner bearing end 501, can also push the lubricating fluid in the inner shallow annular groove 505 to flow. During installation, first place the rear bearing end 1 at the bottom, and place the roller column 504 in the corresponding grooves at the bottom and top of the inner bearing end 501, so that the bottom roller column 504 fits into the inner roller ring groove 506 of the rear bearing end 1. Then, fit the connecting ring 608 into the sealing ring groove 703 on the rear bearing end 1. The hose 602, which is connected to the sealing ring groove 703 through the input pipe 601 and the output pipe 611, is fitted inside the shallow inner ring groove 505 and fits into the pressure roller 606 of the rotating block 605. Then, fit the half ring 607 into the wedge groove 610 on the inner bearing end 501 through the positioning protrusion 609. The half ring 607 provides support for the hose 602 under pressure. When the wedge groove 610 fits into the positioning protrusion 609, the hose 602 is halved. The ring 607 is used for positioning. At the same time, the rubber pad 704 is inserted into the sealing groove 705. After that, the front bearing end 2 is placed on top of the rear bearing end 1. The wedge grooves 702 at the four corners of the front bearing end 2 are engaged with the wedge blocks 701 on the rear bearing end 1. The inclined fixing block 709 inside the wedge groove 702 is inserted into the slider groove 708. The positioning screw 707 is turned by inserting a screwdriver or other tool into the mounting hole 710. The positioning screw 707 and the wedge block 701 rotate and push the inclined slider 706 inside the slider groove 708 through the thread structure. The inclined slider 706 contacts the inclined surface of the inclined fixing block 709 through the inclined surface, so that the connection gap between the rear bearing end 1 and the front bearing end 2 is reduced, and the sealing is achieved.

[0028] This invention provides a combined sealing water-cooled mechanical seal structure. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A combined sealing water-cooled mechanical seal structure, comprising a rear bearing end (1), a front bearing end (2), a positioning hole (3), and a shaft groove (4), characterized in that: The rear bearing end (1) and the front bearing end (2) are provided with a pressure bearing mechanism (5) to replace the traditional bearing and reduce wear by bearing vertical force. The inner side of the pressure bearing mechanism (5) is provided with a water cooling mechanism (6) for auxiliary heat dissipation. The water-cooled cooling mechanism (6) is surrounded by a sealing mechanism (7) for sealing and encapsulating the structure. The pressure bearing mechanism (5) includes an inner bearing end (501), with a fitting ring groove (502) on both sides of the inner bearing end (501). A rotating shaft ring (503) is slidably connected to the side of each fitting ring groove (502). Eight roller columns (504) are slidably connected to both sides of the inner bearing end (501). An inner shallow ring groove (505) is provided on the inner side of the inner bearing end (501). Roller ring grooves (506) are provided on the side walls of the rear bearing end (1) and the front bearing end (2). A flow groove end (507) is provided on the inner wall of the inner shallow ring groove (505).

2. The combined sealing water-cooled mechanical seal structure according to claim 1, characterized in that: An inner ring (508) is fixedly connected to the inner side of the shaft of the inner bearing end (501), and an oil supply pipe (509) is provided on the side of the rear bearing end (1). A stud (510) is threadedly connected to the inner wall of the end of the oil supply pipe (509).

3. The combined sealing water-cooled mechanical seal structure according to claim 2, characterized in that: The two rotating rings (503) are fixedly connected to the sides of the rear bearing end (1) and the front bearing end (2) respectively. The flow groove end (507) extends from the inner wall of the inner shallow ring groove (505) to the outer wall of the inner bearing end (501).

4. The combined sealing water-cooled mechanical seal structure according to claim 3, characterized in that: The water-cooling cooling mechanism (6) includes an input pipe (601), a flexible hose (602) is fixedly connected to the end of the input pipe (601), an output pipe (611) is fixedly connected to the end of the flexible hose (602) away from the input pipe (601), a number of threaded grooves (603) are opened on the inner side of the inner bearing end (501), a screw (604) is threadedly connected to the inner side of each threaded groove (603), a rotating block (605) is threadedly connected to the other end of the screw (604), a pressure roller (606) is rotatably connected to the inner side of the rotating block (605), a half ring (607) is provided on the outer side of the flexible hose (602), three positioning protrusions (609) are fixedly connected to the outer side of the half ring (607), a connecting ring (608) is provided on the outer side of the positioning protrusions (609), and a wedge groove (610) is opened on the inner wall of both the rear bearing end (1) and the front bearing end (2).

5. The combined sealing water-cooled mechanical seal structure according to claim 4, characterized in that: The connecting ring (608) is fixedly connected to the input pipe (601) and the output pipe (611), the groove (610) is adapted to the shape of the positioning protrusion (609), and the pressure roller (606) is in contact with the hose (602).

6. The combined sealing water-cooled mechanical seal structure according to claim 5, characterized in that: The sealing mechanism (7) includes a mating block (701), a slider groove (708) is provided on the side of the mating block (701), an inclined slider (706) is slidably connected to the inner side of the slider groove (708), and a positioning screw (707) is threadedly connected to the side of the inclined slider (706).

7. The combined sealing water-cooled mechanical seal structure according to claim 6, characterized in that: The sealing mechanism (7) also includes a rubber pad (704), which is set on the top of the rear bearing end (1) or the front bearing end (2). The top of the rear bearing end (1) or the front bearing end (2) is provided with a sealing groove (705). The inner side of the rear bearing end (1) or the front bearing end (2) is provided with a sealing ring groove (703). The four corners of the side of the front bearing end (2) are provided with wedge grooves (702). The inner side of each wedge groove (702) is fixedly connected with a wedge block (709). Two mounting holes (710) are provided on both sides of the front bearing end (2).

8. The combined sealing water-cooled mechanical seal structure according to claim 7, characterized in that: The positioning screw (707) is threadedly connected to the mating block (701), the sealing groove (705) and the rubber pad (704) are mutually matched in shape, the sealing ring groove (703) and the connecting ring (608) are mutually matched in shape, and the mating block groove (702) and the mating block (701) are mutually matched in shape.

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