A water blocking device for long pipe large pipe diameter external thread turning machining
By designing a support base and a cylinder-driven blocking disc device, the problem of cutting fluid leakage polluting the environment was solved, and a tight seal was achieved in the machining of external threads for oil casing, improving machining efficiency and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIANGAO CNC MACHINE TOOLS
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-19
AI Technical Summary
When machining the external threads of long pipes, the cutting fluid flows along the inner hole of the pipe and is thrown out to the other end, polluting the environment and making it difficult to recycle and reuse. Existing foam boards are not tight seals and are easy to detach.
A water-blocking device was designed, comprising a support base, a support beam, a linear guide rail, a water-blocking slide, a blocking disc, and a cylinder. The blocking disc is driven by the cylinder to move along the linear guide rail and rotate synchronously, thereby achieving a tight seal on the end hole of the oil casing.
It ensures effective sealing of cutting fluid, prevents leakage, improves processing efficiency and accuracy, supports flexible adaptation to different pipe diameters, and extends the service life of the device.
Smart Images
Figure CN224373533U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machinery, and in particular to thread processing technology, specifically a water-blocking device for machining external threads on long pipes with large diameters. Background Technology
[0002] In the modern petroleum industry, threads need to be machined on oil casings. The requirements for machining quality are getting higher and higher, and the amount of cutting fluid used in thread machining is also increasing. Therefore, it is necessary to recycle and reuse cutting fluid.
[0003] When machining the external threads of long pipes, the cutting fluid used to cool the heat of machining flows along the inner hole of the pipe to the other end. Since the pipe rotates during machining, the cutting fluid is thrown out along the pipe, polluting the environment and is not easy to recycle and reuse, resulting in a lot of waste.
[0004] In the prior art, before machining long pipe threads, a circular foam board is manually plugged into the pipe opening. This can block most of the liquid, but a small amount will still flow out of the pipe, and the foam board is also easy to detach from the pipe opening. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a water-blocking device for long, large-diameter pipes with externally threaded machining, overcoming the deficiencies of existing technologies and enabling effective sealing of the end holes of oil casing. Furthermore, it ensures the tightness and stability of the sealing.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A water-blocking device for machining the external threads of a long, large-diameter pipe includes a support base. A support beam is fixedly connected to the upper end of the support base. A linear guide rail is fixedly connected to the upper surface of the support beam. A water-blocking slide block is slidably connected above the linear guide rail via a slider. One end of a water-blocking shaft is fixedly connected to the front end of the water-blocking slide block. A sealing support is fixedly installed at the front end of the upper surface of the support beam. The other end of the water-blocking shaft passes through the sealing support and is rotatably connected to a blocking disc via a bearing. The blocking disc is coaxial with the water-blocking shaft and corresponds to the end face of the oil casing. The water-blocking shaft is parallel to the linear guide rail.
[0008] A cylinder support is fixedly connected to the rear end of the supporting beam, and a cylinder is fixedly connected to the side of the cylinder support. The piston rod of the cylinder passes through the cylinder support and is connected to the water-blocking slide.
[0009] Preferably, a protective cover is fixedly connected above the supporting beam, and the protective cover covers the linear guide rail, the water-blocking slide, the sealing support, and the cylinder support.
[0010] Preferably, a pin seat is fixedly installed above the water-blocking slide block, and the piston rod end of the cylinder is movably connected to the pin seat via a pin.
[0011] Preferably, the circumferential surface of the blocking disc is provided with a plurality of sealing grooves, and a sealing ring is embedded in the sealing groove.
[0012] Preferably, the sealing support has a through hole in the middle, a sealing bushing is fixedly installed in the through hole, and the water-blocking shaft passes through the sealing bushing and is movably engaged with the sealing bushing.
[0013] This invention provides a water-blocking device for machining external threads on long, large-diameter pipes. It offers the following advantages: By controlling the piston rod of the cylinder to extend, the water-blocking slide moves along a linear guide rail, which in turn moves the water-blocking shaft and the plugging disc towards the oil casing. This allows the plugging disc to directly seal the end hole of the oil casing, effectively blocking the end hole. Furthermore, since the plugging disc is coaxially connected to the water-blocking shaft via a bearing, it rotates synchronously with the oil casing during external thread machining, ensuring a tight and stable seal and effectively preventing cutting fluid leakage. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.
[0015] Figure 1 A schematic diagram of the structure of this utility model in use;
[0016] Figure 2 A schematic diagram of the structure of this utility model;
[0017] Figure 3 A schematic diagram of the internal structure of the protective cover in this utility model;
[0018] Explanation of the labels in the diagram:
[0019] 1. Support seat; 2. Support beam; 3. Linear guide rail; 4. Water-blocking slide; 5. Water-blocking shaft; 6. Sealing support; 7. Blocking disc; 8. Cylinder support; 9. Cylinder; 10. Oil casing; 11. Protective cover; 12. Pin seat; 13. Pin; 71. Sealing groove. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0021] Example 1, as Figures 1 to 3As shown, a water-blocking device for machining the external threads of a long, large-diameter pipe includes a support base 1. A support beam 2 is fixedly connected to the upper end of the support base 1. A linear guide rail 3 is fixedly connected to the upper surface of the support beam 2. A water-blocking slide 4 is slidably connected above the linear guide rail 3 via a slider. One end of a water-blocking shaft 5 is fixedly connected to the front end of the water-blocking slide 4. A sealing support 6 is fixedly installed at the front end of the upper surface of the support beam 2. The other end of the water-blocking shaft 5 passes through the sealing support 6 and is rotatably connected to a blocking disc 7 via a bearing. The blocking disc 7 is coaxial with the water-blocking shaft 5 and corresponds to the end face of the oil casing 10. The water-blocking shaft 5 is parallel to the linear guide rail 3.
[0022] A cylinder support 8 is fixedly connected to the rear end of the supporting beam 2, and a cylinder 9 is fixedly connected to the side of the cylinder support 8. The piston rod of the cylinder 9 passes through the cylinder support 8 and is connected to the water-blocking slide 4.
[0023] Working principle:
[0024] In use, when the oil casing 10 is being threaded, the piston rod of the control cylinder 9 extends, pushing the water-blocking slide 4 to move along the linear guide rail 3. This, in turn, moves the water-blocking shaft 5 and the plugging disc 7 towards the oil casing 10, allowing the plugging disc 7 to directly seal the end hole of the oil casing 10, effectively sealing the end hole. Furthermore, since the plugging disc 7 is coaxially connected to the water-blocking shaft 5 via a bearing, it rotates synchronously with the oil casing 10 during threading, ensuring a tight and stable seal and effectively preventing cutting fluid leakage.
[0025] After machining is completed, the piston rod of cylinder 9 can be retracted to return the water-blocking slide 4 to its original position. This, in turn, causes the blocking disc 7 to disengage from the end hole of the oil casing 10 via the water-blocking shaft 5, achieving rapid unblocking and ensuring high efficiency and safety during the machining process. The entire device is compact and easy to operate. Furthermore, when machining external threads on oil casings of different diameters, the corresponding blocking disc 7 can be directly replaced for flexible adaptation, greatly improving machining efficiency and precision.
[0026] In Example 2, as a further preferred embodiment of Example 1, a protective cover 11 is fixedly connected above the supporting beam 2. The protective cover 11 covers the linear guide rail 3, the water-blocking slide 4, the sealing support 6, and the cylinder support 8. The protective cover 11 effectively encloses the linear guide rail 3 and the water-blocking slide 4, preventing accidental contact by operators and resulting mechanical injury. It also effectively prevents the linear guide rail 3 and the water-blocking slide 4 from being contaminated by external impurities during operation, ensuring the stability of the device's operation and extending its service life.
[0027] In Example 3, as a further preferred embodiment of Example 1, a pin seat 12 is fixedly installed above the water-blocking slide 4, and the piston rod end of the cylinder 9 is movably connected to the pin seat 12 via a pin 13. Through the cooperation between the pin 13 and the pin seat 12, a certain degree of relative movement flexibility is achieved between the piston rod end of the cylinder 9 and the water-blocking slide 4, thus avoiding mechanical stress concentration caused by excessive rigidity of the piston rod, which could lead to damage to the device.
[0028] In Example 4, as a further preferred embodiment of Example 1, a plurality of sealing grooves 71 are formed on the circumferential surface of the plugging disc 7, and sealing rings are embedded in the sealing grooves 71. By setting multiple sealing grooves 71 and embedding a sealing ring in each sealing groove 71, the sealing performance of the plugging can be effectively enhanced through the superposition effect of multiple sealing rings, thereby further preventing cutting fluid leakage and further improving the plugging effect.
[0029] In Example 5, as a further preferred embodiment of Example 1, a through hole is provided in the center of the sealing support 6, and a sealing sleeve is fixedly installed in the through hole. The water-blocking shaft 5 passes through the sealing sleeve and is movably engaged with it. Through the mutual cooperation between the sealing sleeve and the water-blocking shaft 5, the sealing effect between the sealing support 6 and the water-blocking shaft 5 can be guaranteed, while also ensuring the relative movement flexibility between the two, effectively preventing wear caused by excessive friction, and further extending the service life of the device.
[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A water retaining device for long tube large pipe diameter external thread turning machining, characterized in that: The system includes a support base (1), a support beam (2) fixedly connected to the upper end of the support base (1), a linear guide rail (3) fixedly connected to the upper surface of the support beam (2), a water-blocking slide block (4) slidably connected above the linear guide rail (3) via a slider, a water-blocking slide block (4) fixedly connected to one end of a water-blocking shaft (5) at the front end of the water-blocking slide block (4), a sealing support (6) fixedly installed at the front end of the upper surface of the support beam (2), and a blocking disc (7) rotatably connected to the other end of the water-blocking shaft (5) through the sealing support (6) via a bearing. The blocking disc (7) is coaxially arranged with the water-blocking shaft (5) and the end face of the blocking disc (7) corresponds to the end face of the oil casing (10). The water-blocking shaft (5) is parallel to the linear guide rail (3). The rear end of the supporting beam (2) is fixedly connected to a cylinder support (8), and a cylinder (9) is fixedly connected to the side of the cylinder support (8). The piston rod of the cylinder (9) passes through the cylinder support (8) and is connected to the water-blocking slide (4).
2. A water retaining device for long tube large diameter external thread turning process according to claim 1, characterized in that: A protective cover (11) is fixedly connected above the supporting beam (2). The protective cover (11) covers the linear guide rail (3), the water-blocking slide (4), the sealing support (6) and the cylinder support (8).
3. A water retaining device for long tube large diameter external thread turning process according to claim 1, characterized in that: A pin seat (12) is fixedly installed above the water-blocking slide (4), and the piston rod end of the cylinder (9) is movably connected to the pin seat (12) through a pin (13).
4. A water-blocking device for machining external threads on a long, large-diameter pipe according to claim 1, characterized in that: The circumferential surface of the blocking disc (7) is provided with multiple sealing grooves (71), and a sealing ring is embedded in the sealing groove (71).
5. A water retaining device for long tube large diameter external thread turning process according to claim 1, characterized in that: The sealing support (6) has a through hole in the middle, and a sealing bushing is fixedly installed in the through hole. The water-blocking shaft (5) passes through the sealing bushing and is movably engaged with the sealing bushing.