Motor shaft cabin-penetrating sealing device capable of moving in two directions

Abstract

The invention relates to the technical field of industrial manufacturing, in particular to a bi-directionally movable motor shaft cabin-penetrating sealing device which comprises a processing cabin, a sealing plate is fixedly connected to one side of the processing cabin, a sealing elastic cushion is fixedly connected to the middle of the outer side of the sealing plate, and a sliding block is slidably connected to the inner side of the sealing plate. First springs are arranged on the two sides of the sliding block; and hydraulic bins are arranged on the two sides of the sealing plate correspondingly, sealing rods are slidably connected into the hydraulic bins, sliding core rods are slidably connected to the middles of the sealing rods, second springs are fixedly connected between the sliding core rods and the sealing rods, and the second springs are located in the sealing rods. According to the device, in the machining process, the position of a shaft penetrating hole can be changed through adjustment according to the actual requirement, the rotating shaft is connected with the needed side of the machining cabin according to the actual machining requirement, and holes do not need to be formed in the two sides.

Description

Technical Field

[0001] This invention relates to the field of industrial manufacturing technology, specifically to a bidirectional movable motor shaft through-chamber sealing device. Background Technology

[0002] As the global dynamic sealing market expands, this technology is driving upgrades in multiple sectors towards zero leakage and intelligent operation, becoming a key support for the efficient and reliable operation of industrial equipment. Traditional motor shaft through-cell sealing technology struggles to balance dynamic displacement compensation and long-term sealing, frequently resulting in leakage problems under complex operating conditions, leading to high maintenance costs and equipment downtime losses.

[0003] The existing bidirectional movable motor shaft through-chamber sealing device requires opening a shaft hole on the side wall of the machining chamber when connecting the rotating shaft to the machining chamber, and then adding a sealing device at the shaft hole. When the rotating shaft needs to be switched between two machining chambers, the sealing device needs to be moved frequently, which reduces work efficiency to some extent. Summary of the Invention

[0004] The purpose of this invention is to provide a bidirectional movable motor shaft through-chamber sealing device to solve the problem mentioned in the background art. In the existing bidirectional movable motor shaft through-chamber sealing devices, when connecting the rotating shaft to the machining chamber, a shaft hole needs to be opened on the side wall of the machining chamber, and then a sealing device needs to be added at the shaft hole. When the rotating shaft needs to be replaced in two machining chambers, the sealing device needs to be moved frequently, which reduces work efficiency to a certain extent.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bidirectional movable motor shaft through-chamber sealing device, including a processing chamber, a sealing plate fixedly connected to one side of the processing chamber, a sealing elastic soft pad fixedly connected to the middle of the outer side of the sealing plate, a sliding block slidably connected to the inner side of the sealing plate, and a first spring provided on both sides of the sliding block; Hydraulic chambers are provided on both sides of the sealing plate. A sealing rod is slidably connected inside the hydraulic chamber. A sliding core rod is slidably connected in the middle of the sealing rod. A second spring is fixedly connected between the sliding core rod and the sealing rod. The second spring is located inside the sealing rod. Both sides of the sealing rod are fixedly connected to the sliding block.

[0006] Furthermore, one end of the hydraulic chamber is fixedly connected to a conveying pipe, and the other end of the conveying pipe is fixedly connected to a sealing chamber. The sealing chamber is located inside the sealing elastic pad, and a sealing soft ring is slidably connected inside the sealing chamber. The sealing soft ring is used to seal the rotating shaft, and a third spring is provided between the sealing soft ring and the sealing elastic pad.

[0007] Furthermore, a fixing ring is fixedly connected to the outer side of the sealing elastic pad, and a grinding ring is rotatably connected inside the fixing ring. One end of the grinding ring has an inclined surface, and the outer side of the grinding ring has a spiral groove.

[0008] Furthermore, the fixed ring has a straight sliding groove and an oblique sliding groove inside, and the straight sliding groove and the oblique sliding groove are fixedly connected.

[0009] Furthermore, a sliding ball is slidably connected inside the straight slide groove and the inclined slide groove, and a sliding rod is fixedly connected to one side of the sliding ball. Both the sliding ball and the sliding rod are located inside the fixed ring.

[0010] Furthermore, the sliding rod is slidably connected to a limiting groove, which is formed inside the fixed ring and is used to limit the position of the sliding rod.

[0011] Furthermore, a sliding plate is slidably connected to one side of the sliding rod, and a fourth spring is fixedly connected to the other side of the sliding plate. The other end of the fourth spring is fixedly connected to the inside of the fixed ring.

[0012] Furthermore, a control slide rod is fixedly connected to one side of the slide rod, and a sliding arc block is fixedly connected to the other end of the control slide rod. The sliding arc block is used to slide in connection with the spiral groove.

[0013] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. The present invention, through the design of a sealing elastic soft pad, eliminates the need to move the sealing device when it is necessary to change the processing chamber to which the rotating shaft is connected; Second, during the connection between the rotating shaft and the processing chamber, the grinding ring will be driven to rotate to grind the impurities and particles on the surface of the rotating shaft, remove impurities on the surface of the rotating shaft that may affect the seal, so that the sealing soft ring has a better sealing effect when it contacts the rotating shaft, and effectively prevents the leakage of items in the processing chamber. Third, when the sealing ring wears down and no longer adheres tightly to the shaft surface, the second spring will drive the sealing rod to continue sliding in the hydraulic chamber, causing hydraulic oil to continuously flow into the sealing chamber, thereby allowing the sealing ring to continue to adhere tightly to the shaft surface, achieving automatic compensation sealing and ensuring the continuous effectiveness of the seal. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the processing compartment of the present invention. Figure 3 This is a schematic cross-sectional view of the sealing plate structure of the present invention; Figure 4 This is a schematic cross-sectional view of the hydraulic chamber structure of the present invention; Figure 5 This is a schematic cross-sectional view of the sealing elastic pad structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the grinding ring structure of the present invention.

[0016] In the diagram: 1. Processing chamber; 2. Sealing plate; 3. Sealing elastic pad; 4. Sliding block; 5. First spring; 6. Hydraulic chamber; 7. Sealing rod; 8. Sliding core rod; 9. Second spring; 10. Conveying pipe; 11. Sealing chamber; 12. Sealing soft ring; 13. Third spring; 14. Fixing ring; 15. Grinding ring; 16. Inclined surface; 17. Spiral groove; 18. Straight slide groove; 19. Inclined slide groove; 20. Sliding ball; 21. Sliding rod; 22. Restricting slide groove; 23. Fourth spring; 24. Control slide rod; 25. Sliding arc block; 26. Rotating shaft. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments.

[0019] Example: A bidirectional movable motor shaft through-chamber sealing device, such as... Figures 1-7As shown, the device includes a processing chamber 1. A sealing plate 2 is fixedly connected to one side of the processing chamber 1. It should be noted that the processing chamber 1 and the sealing plate 2 are sealed to prevent leakage of items inside the processing chamber 1. A sealing elastic pad 3 is fixedly connected to the middle of the outer side of the sealing plate 2. A sliding block 4 is slidably connected to the inner side of the sealing plate 2. The sliding block 4 has a shaft hole for the rotating shaft 26 to pass through. The sealing elastic pad 3 is existing technology. The design of the sealing elastic pad 3 prepares for the sliding block 4 to slide. A first spring 5 is provided on both sides of the sliding block 4. The design of the first spring 5 provides power for the subsequent sliding and resetting of the sliding block 4. Hydraulic chambers 6 are provided on both sides of the sealing plate 2. A sealing rod 7 is slidably connected inside the hydraulic chamber 6. A sliding core rod 8 is slidably connected in the middle of the sealing rod 7. A second spring 9 is fixedly connected between the sliding core rod 8 and the sealing rod 7. The second spring 9 is located inside the sealing rod 7. The sealing rods 7 on both sides are fixedly connected to the sliding block 4. With this design, the sliding block 4 can drive the sliding core rods 8 on both sides to slide when it slides.

[0020] One end of the hydraulic chamber 6 is fixedly connected to a conveying pipe 10, and the other end of the conveying pipe 10 is fixedly connected to a sealing chamber 11. The sealing chamber 11 is located inside a sealing elastic pad 3. A sealing soft ring 12 is slidably connected inside the sealing chamber 11. The sealing soft ring 12 is used to seal the rotating shaft 26. A third spring 13 is provided between the sealing soft ring 12 and the sealing elastic pad 3. Figure 4 When the sliding block 4 slides to the right, it drives the sliding core rod 8 to slide. At the same time, the sliding core rod 8 squeezes the second spring 9, causing the sealing rod 7 to slide to the right together. This forces the hydraulic oil in the hydraulic chamber 6 into the sealing chamber 11 through the delivery pipe 10, driving the sealing soft ring 12 to move closer to the center. Simultaneously, through the design of the sealing rod 7, the sliding core rod 8, and the second spring 9, when the sealing soft ring 12 is in close contact with the rotating shaft 26, the sliding block 4 will continue to drive the sliding core rod 8 to slide to the right. At the same time, the sliding core rod 8 can no longer slide to the right. When the sliding core rod 8 slides to the right, it will squeeze the second spring 9, causing the second spring 9 to deform. Through this design, if the sealing soft ring 12 wears out later, under the action of the second spring 9, the sliding core rod 8 will continue to slide to the right, allowing the hydraulic oil in the hydraulic chamber 6 to continue to enter the sealing chamber 11 through the delivery pipe 10, so that the sealing soft ring 12 continues to be in close contact with the rotating shaft 26.

[0021] A retaining ring 14 is fixedly connected to the outer side of the sealing elastic pad 3. A grinding ring 15 is rotatably connected inside the retaining ring 14. One end of the grinding ring 15 has an inclined surface 16, and the outer side of the grinding ring 15 has a spiral groove 17. Figure 5The shaft hole on the sliding block 4 is also provided with the same inclined surface as the inclined surface 16. With this design, when the rotating shaft 26 slides down, the rotating shaft 26 can pass into the grinding ring 15, and at the same time, the rotating shaft 26 can pass through the shaft hole on the sliding block 4.

[0022] The fixed ring 14 has a straight slide groove 18 and an oblique slide groove 19 inside, and the straight slide groove 18 and the oblique slide groove 19 are fixedly connected.

[0023] Sliding balls 20 are slidably connected inside the straight slide groove 18 and the inclined slide groove 19. A sliding rod 21 is fixedly connected to one side of the sliding ball 20. Both the sliding ball 20 and the sliding rod 21 are located inside the fixed ring 14. Figure 6 When the rotating shaft 26 slides downward, it can abut against one end of the sliding rod 21, so that the sliding rod 21 can slide in the straight slide groove 18 and the oblique slide groove 19.

[0024] The sliding rod 21 is slidably connected to a limiting groove 22, which is opened inside the fixing ring 14. The limiting groove 22 is used to limit the position of the sliding rod 21. Through the design of the limiting groove 22, the position of the sliding rod 21 can be limited, which can prevent the position of the sliding rod 21 from shifting when it slides.

[0025] A sliding plate 27 is slidably connected to one side of the sliding rod 21, and a fourth spring 23 is fixedly connected to the other side of the sliding plate 27. The other end of the fourth spring 23 is fixedly connected to the inside of the fixing ring 14. Through the design of the sliding plate 27, when the sliding ball 20 slides in the inclined slide groove 19, the sliding ball 20 will pull the sliding rod 21 to slide laterally together, so that the sliding plate 27 slides in the sliding rod 21, so that the fourth spring 23 will not be affected. This reduces the impact of the sliding rod 21 on the fourth spring 23 when it slides, so that the fourth spring 23 can always support the sliding plate 27 and the sliding rod 21 when the sliding rod 21 is sliding, and can provide power for subsequent reset. At the same time, the sliding plate 27 will not separate from the sliding rod 21.

[0026] A control slide rod 24 is fixedly connected to one side of the sliding rod 21, and a sliding arc block 25 is fixedly connected to the other end of the control slide rod 24. The sliding arc block 25 is used to slide with the spiral groove 17. The design of sliding the sliding arc block 25 with the spiral groove 17 allows the grinding ring 15 to rotate. The rotation of the grinding ring 15 can grind the surface of the rotating shaft 26, preventing debris from entering the connection between the rotating shaft 26 and the sealing soft ring 12, so that the sealing soft ring 12 can better seal the connection between the rotating shaft 26 and the sealing soft ring 12.

[0027] See Figure 6The rotating shaft 26 is inserted into the fixing ring 14. Guided by the inclined surface 16, the rotating shaft 26 can smoothly pass through the grinding ring 15. When the end of the rotating shaft 26 abuts against one side of the sliding rod 21, the rotating shaft 26 continues to slide down, causing the rotating shaft 26 to push the sliding ball 20 on the sliding rod 21 to slide in the straight groove 18. While the sliding rod 21 slides, it drives the control sliding rod 24 to slide together. While the control sliding rod 24 slides, it also drives the sliding arc block 25 to slide together, so that the sliding arc block 25 can slide in the spiral groove 17. Guided by the spiral groove 17, the grinding ring 15 rotates. Through the rotation of the grinding ring 15, the surface of the rotating shaft 26 can be ground, thereby removing the impurities on the surface of the rotating shaft 26. As the rotating shaft 26 continues to slide, when the sliding ball 20 slides to the inclined groove 19, the sliding ball 20 will drive the sliding rod 21 to slide to the right, allowing the rotating shaft 26 to slide past the sliding rod 21. Figure 6 When the sliding rod 21 slides downward, it can compress the fourth spring 23, causing the fourth spring 23 to deform and providing power for the subsequent reset of the sliding ball 20 and the sliding rod 21.

[0028] When the rotating shaft 26 slides into the shaft hole of the sliding block 4, pressure is applied to the rotating shaft 26, causing the sliding block 4 to slide to the left or right. This allows the rotating shaft 26 to connect to the required processing chamber 1. During the sliding process, the sliding block 4 drives the sliding core rod 8 to slide, which in turn drives the sealing rod 7 and the second spring 9 to slide together. This allows the hydraulic oil in the hydraulic chamber 6 to enter the sealing chamber 11 through the delivery pipe 10, driving the sealing soft ring 12 to fit tightly against the surface of the rotating shaft 26. Simultaneously, the third spring 13 deforms. This design prevents friction between the rotating shaft 26 and the sealing soft ring 12 when the rotating shaft 26 slides into the shaft hole of the sliding block 4, increasing the service life of the sealing soft ring 12. It should be noted that the sealing soft ring 12 will subsequently make contact with the polished rotating shaft 26 for sealing.

[0029] During the sliding of the sealing rod 7, sliding core rod 8, and second spring 9 towards the hydraulic chamber 6, when the hydraulic oil has driven the sealing soft ring 12 to be in close contact with the rotating shaft 26, the sliding core rod 8 will continue to slide. At the same time, the sealing rod 7 can no longer slide within the hydraulic chamber 6. This will cause the second spring 9 to deform. Through this design, when the sealing soft ring 12 wears during subsequent use, the second spring 9 will push the sealing rod 7, allowing the sealing rod 7 to input more hydraulic oil into the sealing chamber 11. This ensures that the sealing soft ring 12 remains in close contact with the rotating shaft 26, preventing leakage of items within the processing chamber 1. Meanwhile, the sliding core rod 8 on the other side will slide inside the sealing rod 7.

[0030] In this embodiment: during the connection between the rotating shaft 26 and the processing chamber 1, the rotating shaft 26 drives the sliding rod 21 and the control sliding rod 24 to slide together. The control sliding rod 24 can drive the sliding arc block 25 to slide together, so that the sliding arc block 25 can slide within the spiral groove 17, allowing the grinding ring 15 to rotate. This allows the grinding ring 15 to grind the impurities and particles on the surface of the rotating shaft 26, improving the subsequent sealing effect. When the sliding block 4 is sliding, it can use the sliding core rod 8 and the sealing rod 7 to clean the hydraulic chamber 6. Hydraulic oil is compressed, allowing it to flow from the hydraulic chamber 6 into the sealing chamber 11 through the delivery pipe 10. This drives the sealing ring 12, ensuring it adheres tightly to the surface of the rotating shaft 26 for sealing. Simultaneously, under the action of the second spring 9, when the sealing ring 12 wears down, it may no longer adhere tightly to the surface of the rotating shaft 26. In this case, the second spring 9 drives the sealing rod 7, causing it to continue sliding inside the hydraulic chamber 6. This allows hydraulic oil to continue flowing into the sealing chamber 11, ensuring the sealing ring 12 remains tightly attached to the surface of the rotating shaft 26 and preventing leakage of items from the processing chamber 1.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bidirectional movable motor shaft through-chamber sealing device, comprising a machining chamber (1), characterized in that: A sealing plate (2) is fixedly connected to one side of the processing chamber (1), and a sealing elastic pad (3) is fixedly connected to the middle of the outer side of the sealing plate (2). A sliding block (4) is slidably connected to the inner side of the sealing plate (2), and a first spring (5) is provided on both sides of the sliding block (4). Hydraulic chambers (6) are provided on both sides of the sealing plate (2). A sealing rod (7) is slidably connected inside the hydraulic chamber (6). A sliding core rod (8) is slidably connected in the middle of the sealing rod (7). A second spring (9) is fixedly connected between the sliding core rod (8) and the sealing rod (7). The second spring (9) is located inside the sealing rod (7). The sealing rods (7) on both sides are fixedly connected to the sliding block (4).

2. The bidirectional movable motor shaft through-chamber sealing device according to claim 1, characterized in that: One end of the hydraulic chamber (6) is fixedly connected to a conveying pipe (10), and the other end of the conveying pipe (10) is fixedly connected to a sealing chamber (11). The sealing chamber (11) is opened inside the sealing elastic pad (3). A sealing soft ring (12) is slidably connected inside the sealing chamber (11). The sealing soft ring (12) is used to seal the rotating shaft (26). A third spring (13) is provided between the sealing soft ring (12) and the sealing elastic pad (3).

3. The bidirectional movable motor shaft through-chamber sealing device according to claim 2, characterized in that: A fixing ring (14) is fixedly connected to the outer side of the sealing elastic pad (3), and a grinding ring (15) is rotatably connected inside the fixing ring (14). One end of the grinding ring (15) is provided with an inclined surface (16), and a spiral groove (17) is provided on the outer side of the grinding ring (15).

4. The bidirectional movable motor shaft through-chamber sealing device according to claim 3, characterized in that: The fixed ring (14) has a straight slide groove (18) and an oblique slide groove (19) inside, and the straight slide groove (18) and the oblique slide groove (19) are fixedly connected.

5. The bidirectional movable motor shaft through-chamber sealing device according to claim 4, characterized in that: The straight slide groove (18) and the inclined slide groove (19) are slidably connected to a sliding ball (20), and a sliding rod (21) is fixedly connected to one side of the sliding ball (20). The sliding ball (20) and the sliding rod (21) are both located inside the fixed ring (14).

6. The bidirectional movable motor shaft through-chamber sealing device according to claim 5, characterized in that: The sliding rod (21) is slidably connected to a limiting groove (22), which is formed inside the fixing ring (14) and is used to limit the position of the sliding rod (21).

7. The bidirectional movable motor shaft through-chamber sealing device according to claim 6, characterized in that: A sliding plate (27) is slidably connected to one side of the sliding rod (21), and a fourth spring (23) is fixedly connected to the other side of the sliding plate (27). The other end of the fourth spring (23) is fixedly connected to the inside of the fixed ring (14).

8. The bidirectional movable motor shaft through-chamber sealing device according to claim 6, characterized in that: A control slide rod (24) is fixedly connected to one side of the sliding rod (21), and a sliding arc block (25) is fixedly connected to the other end of the control slide rod (24). The sliding arc block (25) is used to slide in connection with the spiral groove (17).

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