Waterproof sealing structure of hollow rotary oil cylinder
By combining components such as a water collection box, a water collection ring, and a water-stop ring, the problem of hydraulic system contamination caused by coolant backflow is solved, achieving a waterproof sealing effect and ensuring the stable operation of the hydraulic system.
Patent Information
- Application Number
- CN202422222950.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-09-11
AI Technical Summary
A large amount of coolant flows through the spindle through-hole to the rear of the rotary cylinder and flows back into the cylinder along the piston rod. The coolant accumulated inside mixes with the hydraulic oil and flows back to the oil tank of the hydraulic power unit along the cylinder return line, causing hydraulic system contamination and malfunction.
It adopts a combination structure of water receiving box, water receiving ring, water stop ring, fastening component, O-ring groove and locking component. Through the cooperation of water receiving ring and rotary cylinder, it prevents coolant backflow, and guides coolant out through the flared mouth of water stop ring and the flared mouth of rear cover, and achieves effective drainage in combination with drainage pipe.
It effectively prevents coolant from flowing back into the rotary cylinder, avoids water accumulation, prevents hydraulic system contamination, and ensures the normal operation of the hydraulic system.
Smart Images
Figure CN223536686U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of hollow rotary cylinders, and in particular to a waterproof sealing structure for a hollow rotary cylinder. Background Technology
[0002] Currently, high-flow, high-pressure coolant is beneficial for timely flushing away of iron filings, preventing them from scratching the workpiece surface, improving surface finish, and quickly removing cutting heat to stabilize machining dimensions.
[0003] However, the ensuing problem is that a large amount of coolant flows through the spindle through-hole to the rear of the rotary cylinder and flows back into the cylinder along the piston rod. The coolant accumulated inside mixes with the hydraulic oil and flows back to the oil tank of the hydraulic power unit along the oil return line of the cylinder, thus contaminating the entire hydraulic system and causing the hydraulic system to malfunction. Utility Model Content
[0004] The purpose of this application is to provide a waterproof sealing structure for a hollow rotary cylinder to solve the problem that a large amount of coolant flows through the spindle through-hole to the rear of the rotary cylinder and flows back into the cylinder along the piston rod. The coolant accumulated inside mixes with the hydraulic oil and flows back to the oil tank of the hydraulic power unit along the oil return line of the cylinder, thereby contaminating the entire hydraulic system and causing hydraulic system failure.
[0005] The waterproof sealing structure for a hollow rotary cylinder provided in this application adopts the following technical solution:
[0006] The waterproof sealing structure of the hollow rotary cylinder includes a water receiving box, a water receiving ring, and a water-stopping ring. The rear side of the water receiving box has an installation hole, and the water receiving ring passes through the installation hole. One side of the water receiving ring is set on one side of the rotary cylinder by a fastening assembly, and the other side of the water receiving ring has a water receiving ring end that abuts against the inner wall of the water receiving box. The water-stopping ring is sleeved on the outside of the piston rod of the rotary cylinder by a locking assembly.
[0007] Furthermore, the water-stop ring has a bell-shaped opening on the side opposite to the rotary cylinder.
[0008] Furthermore, the fastening assembly includes a fastening ring plate disposed on one side of the water receiving ring, the fastening ring plate having multiple fastening holes, the rear end of the rotary cylinder having multiple threaded holes corresponding to the fastening holes, and fastening bolts passing through the multiple fastening holes, the fastening bolts being threadedly connected to the threaded holes.
[0009] Furthermore, an O-ring groove is provided on one side of the fastening ring, and an O-ring is provided in the O-ring groove, which abuts against one side of the rotary cylinder.
[0010] Furthermore, the water-stop ring has a notch on its side, and the locking assembly includes a locking bolt and a locking nut. The two side walls of the notch have bolt holes and nut holes respectively. The locking bolt passes through both the bolt hole and the nut hole, and the locking nut is placed in the nut hole. The locking bolt and the locking nut are threaded together.
[0011] Furthermore, the end of the water-receiving ring is generally square in shape.
[0012] Furthermore, a water receiving box mounting plate is provided on the side of the water receiving box away from the mounting hole, and an observation window is provided on the water receiving box mounting plate.
[0013] Furthermore, a drainage pipe is provided on the side of the water receiving box near the water-stop ring.
[0014] Compared with the prior art, the beneficial effects of this application are as follows:
[0015] By setting up a structure in which the water receiving box, water receiving ring, fastening components, water receiving ring end, water stop ring, and locking components work together, not only can the coolant be prevented from flowing back along the outer diameter of the piston rod into the interior of the rotary cylinder, but water accumulation at the rear end of the piston rod can also be avoided, thus preventing the coolant from contaminating the entire hydraulic system and causing hydraulic system failure.
[0016] Meanwhile, by setting O-ring grooves and O-ring structure, the sealing between the water receiving ring and the rear mounting surface of the rotary cylinder can be improved, thereby preventing coolant from leaking out from the gap between the water receiving ring and the rotary cylinder.
[0017] In addition, by designing the overall structure of the end of the water receiving ring as a square structure, it is beneficial to form the largest water blocking area and fit the edge of the water receiving box to the maximum extent, thereby effectively preventing coolant from splashing into the machine tool's outer casing along the mounting hole. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the waterproof sealing structure of the hollow rotary cylinder in the embodiments of this application.
[0019] Figure 2 yes Figure 1 An explosion diagram.
[0020] Figure 3 This is a schematic diagram of the structure of the water receiving ring, fastening ring, and O-ring in an embodiment of this application.
[0021] Figure 4 This is a schematic diagram of the structure of the water-stop ring, piston rod, and threaded hole in an embodiment of this application.
[0022] Figure 5 This is a schematic diagram of the structure of the waterstop ring flared opening, notch, bolt hole, and nut hole in an embodiment of this application.
[0023] Figure 6 yes Figure 5 A sectional view.
[0024] Figure 7 This is a schematic diagram of the structure of the back cover and the flared opening of the back cover in an embodiment of this application.
[0025] Figure 8 yes Figure 7 A sectional view.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Water receiving box; 11. Mounting hole; 12. Water receiving box mounting plate; 13. Observation window; 14. Drainage pipe; 2. Water receiving ring; 21. Water receiving ring end; 22. Fastening ring plate; 23. Fastening hole; 24. O-ring groove; 25. O-ring; 3. Water stop ring; 31. Water stop ring flare; 32. Notch; 33. Bolt hole; 34. Nut hole; 4. Rotary cylinder; 41. Piston rod; 5. Rear cover; 51. Rear cover flare. Detailed Implementation
[0028] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.
[0029] This application discloses a waterproof sealing structure for a hollow rotary cylinder, referring to... Figure 1 and Figure 2 In this embodiment, the waterproof sealing structure includes a water receiving box 1, a water receiving ring 2, a fastening assembly, a water receiving ring end 21, a water-stop ring 3, and a locking assembly. A water receiving box mounting plate 12 is fixedly installed on the front side of the water receiving box 1, and an observation frame is fixedly installed on the outer side wall of the machine tool using multiple screws. The water receiving box mounting plate 12 is then fixedly installed on the inner side of the observation frame using multiple bolts, thus facilitating the secure installation of the water receiving box 1 inside the machine tool.
[0030] Furthermore, an observation window 13 is provided on the water receiving box mounting plate 12, and a glass window is provided on the outside of the observation frame. The glass window and the observation window 13 correspond to each other. Thus, by setting the cooperative structure of the glass window and the observation window 13, the operator can clearly see the flow of coolant inside the water receiving box 1 from outside the machine tool.
[0031] Meanwhile, the water receiving box 1 has a mounting hole 11 on the side away from the water receiving box mounting plate 12. The water receiving ring 2 passes through the mounting hole 11, and one side of the water receiving ring 2 is fixedly mounted on the rear end face of the rotary cylinder 4 by a fastening component, so that the rear end face of the rotary cylinder 4 and the water receiving ring 2 cooperate with each other, and the piston rod 41 of the rotary cylinder 4 extends into the interior of the water receiving box 1 along the middle of the water receiving ring 2.
[0032] Specifically, refer to Figure 2 and Figure 3 In this embodiment, the fastening assembly includes a fastening ring 22, threaded holes, and fastening bolts. The fastening ring 22 is mounted on the side of the water receiving ring 2 near the rotary cylinder 4, and has multiple fastening holes 23. Multiple threaded holes are provided, each circumferentially formed on the rear end face of the rotary cylinder 4. The number of threaded holes and fastening holes 23 are the same and correspond to each other. Multiple fastening bolts are provided, and each bolt engages with the fastening holes 23 to pass through them.
[0033] Furthermore, these fastening bolts are threadedly connected to these threaded holes; by passing these fastening bolts through the fastening holes 23 into the fastening ring 22 and then screwing them into the threaded holes, the fastening ring 22 can be securely installed on the rear end face of the rotary cylinder 4, so that the rear end face of the rotary cylinder 4 and the inner side of the fastening ring 22 cooperate with each other, thereby making the water receiving ring 2 and the rotary cylinder 4 securely installed.
[0034] Preferably, in this embodiment, an O-ring groove 24 is provided on the side of the fastening ring 22 near the rotary cylinder 4, and an O-ring 25 is placed in the O-ring groove 24; when the water receiving ring 2 is securely installed on the rear end face of the rotary cylinder 4, the O-ring 25 abuts against the rear end face of the rotary cylinder 4. By setting the structure of the O-ring groove 24 and the O-ring 25, the sealing between the water receiving ring 2 and the rear end mounting surface of the rotary cylinder 4 can be improved, thereby preventing coolant from leaking out from the gap between the water receiving ring 2 and the rotary cylinder 4.
[0035] Meanwhile, the end 21 of the water receiving ring is fixedly installed on the outer side of the end of the water receiving ring 2 away from the rotary cylinder 4; when the water receiving ring 2 is fixedly installed with the rear end face of the rotary cylinder 4, the end 21 of the water receiving ring abuts against the inner wall of the water receiving box 1 near the mounting hole 11. Moreover, the end 21 of the water receiving ring is generally square in shape. Therefore, by designing the overall structure of the end 21 of the water receiving ring as a square structure, it is beneficial to form the largest water blocking area and to fit the edge of the water receiving box 1 to the maximum extent, thereby effectively preventing coolant from splashing into the machine tool's outer casing along the mounting hole 11.
[0036] In addition, refer to Figure 2 , Figure 4 as well as Figure 5 In this embodiment, a locking groove is provided on the outer side of the piston rod 41 of the rotary cylinder 4. The water-stop ring 3 is fixedly sleeved in the locking groove by the locking assembly to form a raised step. The raised step is located on the side of the water receiving box 1 near the mounting hole 11. By setting the raised step, the coolant can be prevented from flowing back into the interior of the rotary cylinder 4 along the outer diameter of the piston rod 41.
[0037] Specifically, the locking assembly includes a locking bolt and a locking nut, with the locking bolt and locking nut being threaded together. A notch 32 is provided on the side of the water-stop ring 3, and the water-stop ring 3 is made of plastic, possessing a certain degree of plasticity. This allows the notch 32 of the water-stop ring 3 to close when compressed; it automatically opens when the compressive force is removed, thus forming the notch 32.
[0038] At the same time, refer to Figure 5 In this embodiment, bolt holes 33 and nut holes 34 are respectively provided on the two side walls of the water-stop ring 3 with notches 32. The locking bolt cooperates with both bolt holes 33 and nut holes 34, so that the locking bolt passes through both bolt holes 33 and nut holes 34 at the same time; and the locking nut cooperates with nut holes 34, so that the locking nut is installed in nut holes 34.
[0039] First, the water-stop ring 3 is fitted into the locking groove on the outside of the piston rod 41. Then, the locking bolt is inserted into the nut hole 34 along the bolt hole 33, and then the locking bolt is screwed into the locking nut, thereby closing the notch 32 on the water-stop ring 3. This makes the water-stop ring 3 securely locked in the locking groove, thus achieving the goal of securely installing the water-stop ring 3 on the outside of the piston rod 41 of the rotary cylinder 4.
[0040] Better, refer to Figure 5 and Figure 6 In this embodiment, the water-stop ring 3 has a water-stop ring flared opening 31 on the side opposite to the rotary cylinder 4. Specifically, the cross-section of the water-stop ring 3 is a right-angled trapezoidal structure, and the inclined surface gradually rises from the inner diameter to the outer diameter of the water-stop ring 3. In this way, when the piston rod 41 of the rotary cylinder 4 rotates to drain water, by setting the water-stop ring flared opening 31, the coolant can be guided towards the inner wall of the water receiving box 1, thereby avoiding the formation of water accumulation at the rear end of the piston rod 41.
[0041] At the same time, refer to Figure 4 , Figure 7 and Figure 8In this embodiment, a rear cover 5 is also installed on the rear end face of the rotary cylinder 4. The rear cover 5 extends into the interior of the water receiving ring 2 on the side opposite to the rotary cylinder 4, and the inner side wall of the rear cover 5 is provided with a rear cover flared opening 51. The cross-section of the rear cover flared opening 51 is a right-angled trapezoidal structure, and the inclined surface gradually rises from the inner diameter to the outer diameter of the rear cover 5. By setting the rear cover flared opening 51, it is beneficial to achieve effective drainage.
[0042] Secondly, refer to Figure 1 and Figure 2 In this embodiment, a drain pipe 14 is installed at the bottom of the water receiving box 1 near the water stop ring 3; when the coolant is discharged from the piston rod 41 of the rotary cylinder 4 into the interior of the water receiving box 1, the drain pipe 14 can effectively drain the coolant inside the water receiving box 1.
[0043] By setting up a structure in which the water receiving box 1, water receiving ring 2, fastening assembly, water receiving ring end 21, water stop ring 3, and locking assembly work together, not only can the coolant be prevented from flowing back along the outer diameter of the piston rod 41 into the interior of the rotary cylinder 4, but water accumulation at the rear end of the piston rod 41 can also be avoided, thus preventing the coolant from contaminating the entire hydraulic system and causing hydraulic system failure.
[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A waterproof sealing structure for a hollow rotary cylinder, characterized in that: The device includes a water receiving box (1), a water receiving ring (2), and a water-stopping ring (3). The water receiving box (1) has an installation hole (11) on its rear side. The water receiving ring (2) passes through the installation hole (11). One side of the water receiving ring (2) is set on one side of the rotary cylinder (4) by a fastening assembly. The other side of the water receiving ring (2) has a water receiving ring end (21) that abuts against the inner wall of the water receiving box (1). The water-stopping ring (3) is sleeved on the outside of the piston rod (41) of the rotary cylinder (4) by a locking assembly.
2. The waterproof sealing structure of the hollow rotary cylinder according to claim 1, characterized in that: The water-stop ring (3) has a water-stop ring flared mouth (31) on the side opposite to the rotary cylinder (4).
3. The waterproof sealing structure of the hollow rotary cylinder according to claim 1, characterized in that: The fastening assembly includes a fastening ring (22) disposed on one side of the water receiving ring (2), the fastening ring (22) having a plurality of fastening holes (23), the rear end of the rotary cylinder (4) having a plurality of threaded holes corresponding to the fastening holes (23), and fastening bolts passing through the holes (23) of the plurality of fastening holes (23), the fastening bolts being threadedly connected to the threaded holes.
4. The waterproof sealing structure of the hollow rotary cylinder according to claim 3, characterized in that: One side of the fastening ring (22) is provided with an O-ring groove (24), and an O-ring (25) is provided in the O-ring groove (24). The O-ring (25) abuts against one side of the rotary cylinder (4).
5. The waterproof sealing structure of the hollow rotary cylinder according to claim 1, characterized in that: The water-stop ring (3) has a notch (32) on its side. The locking assembly includes a locking bolt and a locking nut. The two side walls of the notch (32) are respectively provided with bolt holes (33) and nut holes (34). The locking bolt passes through both the bolt hole (33) and the nut hole (34). The locking nut is placed in the nut hole (34). The locking bolt and the locking nut are threaded together.
6. The waterproof sealing structure of the hollow rotary cylinder according to claim 1, characterized in that: The end of the water receiving ring (21) is generally square.
7. The waterproof sealing structure of the hollow rotary cylinder according to claim 1, characterized in that: The water receiving box (1) is provided with a water receiving box mounting plate (12) on the side opposite to the mounting hole (11), and an observation window (13) is provided on the water receiving box mounting plate (12).
8. The waterproof sealing structure of the hollow rotary cylinder according to claim 1, characterized in that: The water receiving box (1) is provided with a drainage pipe (14) on the side near the water-stop ring (3).