Coal mine water stop sleeve water pressure self-tightening type sealing structure
Patent Information
- Application Number
- CN202522190273.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-16
AI Technical Summary
但该类结构在实际应用中存在明显缺陷：其一，螺栓紧固时易因受力不均导致密封圈压缩量不一致，在水压波动时，压缩量不足的区域易出现渗漏，尤其在高水压工况下，密封失效风险显著升高；其二，密封圈多采用普通丁腈橡胶材质，其耐腐蚀性与耐高温性（井下局部环境温度可达 40-60℃）较差，长期使用后易出现老化、开裂，需频繁更换，增加维护成本与停工时间；其三，法兰对接过程中缺乏导向定位结构，井下施工时易因法兰孔位错位导致密封面偏移，进一步降低密封可靠性
[0013]1.本实用新型所述的煤矿止水套管水压自紧式密封结构，通过第一连接环、导向杆、密封圈和橡胶套管的设置，使第一连接环与导向杆的配合使用能够为密封组件提供导向作用，同时还能使密封组件保持忒顶排列顺序，使密封圈不会变形扭曲，并且还能为法兰提供导向作用，使得两组法兰能够精准对准，防止出现偏差，密封圈与橡胶套管的配合使用能够在水压增大时，通过管道之间的相互挤压，来提高密封效率，使得高压水不会对密封性造成影响。
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Figure CN224801182U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of coal mine water-stop sleeves, specifically the water pressure self-tightening sealing structure of coal mine water-stop sleeves. Background Technology
[0002] In coal mining operations, water supply pipes are key infrastructure for ensuring underground drainage, dust suppression, and equipment cooling. Their sealing performance directly affects the safety and efficiency of coal mine production.
[0003] Currently, coal mine water pipelines mostly use traditional flange connection structures for sealing. This involves bolting the flange and clamping a single sealing ring at the flange end face to achieve a seal. However, this type of structure has significant drawbacks in practical applications: First, uneven bolt tightening can lead to inconsistent compression of the sealing ring. Under fluctuating water pressure, areas with insufficient compression are prone to leakage, especially under high water pressure conditions, significantly increasing the risk of seal failure. Second, the sealing rings are mostly made of ordinary nitrile rubber, which has poor corrosion resistance and high-temperature resistance (the local ambient temperature underground can reach 40-60℃). After long-term use, it is prone to aging and cracking, requiring frequent replacement, increasing maintenance costs and downtime. Third, the lack of a guiding and positioning structure during flange connection makes it easy for the sealing surface to shift due to misalignment of the flange holes during underground construction, further reducing sealing reliability.
[0004] Therefore, this utility model provides a water pressure self-tightening sealing structure for coal mine water-stop sleeves. Utility Model Content
[0005] To overcome the shortcomings of existing technologies and solve at least one of the problems mentioned in the background art, a water pressure self-tightening sealing structure for coal mine water-stop sleeves is proposed.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The water pressure self-tightening sealing structure of the coal mine water-stop sleeve of this utility model includes a water supply pipe; the water supply pipe is provided in two sets, and a flange is fixedly installed on the side of the two sets of water supply pipes that are close to each other. The surface of the flange is threaded with bolts, and a guide assembly is provided on the side of the flange away from the water supply pipe. A sealing assembly is provided on the surface of the guide assembly; a leak-proof mechanism is provided on the inner wall of the water supply pipe; a sliding assembly is provided at the end of the guide rod away from the first connecting ring; the guide assembly includes a first connecting ring and a guide rod. The first connecting ring is threadedly connected to one side of one set of flanges by bolts. Four sets of guide rods are provided, and the four sets of guide rods are fixedly installed in a ring on the side of the first connecting ring away from the flange; the cooperation of the first connecting ring and the guide rod can provide guidance for the sealing assembly, and at the same time, it can also keep the sealing assembly in a proper arrangement order, so that the sealing ring will not be deformed or twisted, and it can also provide guidance for the flange, so that the two sets of flanges can be accurately aligned and prevent deviation.
[0007] Preferably, the sealing assembly includes a sealing ring and a rubber sleeve. Several sets of sealing rings are provided, and the sets of sealing rings are laterally slidably installed on the surface of the guide rod. The rubber sleeve is fixedly installed on the inner wall of the sealing ring. In this scheme, the cooperation between the sealing ring and the rubber sleeve can improve the sealing efficiency by mutual squeezing between the pipes when the water pressure increases, so that the high-pressure water will not affect the sealing performance.
[0008] Preferably, the sliding assembly includes a second connecting ring and through holes. The second connecting ring is slidably mounted on the end of the guide rod away from the first connecting ring. Four sets of through holes are provided, and the four sets of through holes are arranged in a ring on the side of the flange near the guide rod. The flange is movably inserted into the guide rod through the through holes. In this scheme, the cooperation between the second connecting ring and the through holes can limit the sealing ring, preventing it from sliding off the surface of the guide rod, and ensuring that the sealing assembly can be used normally within the specified range.
[0009] Preferably, the leak-proof mechanism includes a fixing ring, a rubber ring, and an inclined groove. Two sets of fixing rings are provided, and the two sets of fixing rings are respectively fixedly installed on the inner walls of the first connecting ring and the second connecting ring. The inner wall of the fixing ring is fixedly installed with the rubber ring. An inclined groove is opened on the side of the rubber ring away from the fixing ring. In this scheme, the cooperation of the fixing ring, the rubber ring, and the inclined groove can use the pressure of the water flow to achieve expansion, so that the rubber ring can fit tightly with the water pipe and prevent water leakage. The greater the water pressure, the stronger the sealing performance.
[0010] Preferably, the surface of the water pipe is coated with an anti-corrosion coating. This coating prevents the water pipe from rusting or corroding during long-term use and also reduces maintenance frequency and leakage risk.
[0011] Preferably, the rubber ring is made of fluororubber. In this design, fluororubber has a relatively hard property, which can better maintain its shape and will not be washed away when subjected to a certain water flow impact force. In addition, it also has a certain degree of flexibility, which can expand outward to enhance the sealing performance when the internal water pressure is high.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. The water pressure self-tightening sealing structure of the coal mine water-stop sleeve of this utility model, through the arrangement of the first connecting ring, guide rod, sealing ring and rubber sleeve, enables the first connecting ring and guide rod to provide guidance for the sealing components, and at the same time, to maintain the sealing components in the correct arrangement order, so that the sealing ring will not be deformed or twisted, and also to provide guidance for the flanges, so that the two sets of flanges can be accurately aligned and prevent deviation. The cooperation between the sealing ring and the rubber sleeve can improve the sealing efficiency through the mutual compression between the pipes when the water pressure increases, so that the high pressure water will not affect the sealing performance.
[0014] 2. The water pressure self-tightening sealing structure of the coal mine water-stop sleeve described in this utility model, through the setting of the second connecting ring, through hole, fixing ring, rubber ring and inclined groove, enables the second connecting ring and through hole to cooperate in limiting the sealing ring, preventing it from slipping off the surface of the guide rod, ensuring that the sealing assembly can be used normally within the specified range. The cooperation of the fixing ring, rubber ring and inclined groove can use the pressure of water flow to achieve expansion, so that the rubber ring can fit tightly with the water supply pipe, preventing water leakage. The higher the water pressure, the stronger the sealing performance. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] Figure 1 This is a front perspective view of the present invention;
[0017] Figure 2 This is an exploded view of this utility model;
[0018] Figure 3 This is a partial structural diagram of the present invention;
[0019] Figure 4 This is a schematic diagram of the leak-proof mechanism in this utility model;
[0020] Figure 5 yes Figure 2 Enlarged view of a portion of point A in the middle.
[0021] Legend:
[0022] 1. Water supply pipe; 2. Flange; 3. Bolt; 4. Guide assembly; 41. First connecting ring; 42. Guide rod; 5. Sealing assembly; 51. Sealing ring; 52. Rubber sleeve; 6. Leak-proof mechanism; 61. Fixing ring; 62. Rubber ring; 63. Inclined groove; 7. Sliding assembly; 71. Second connecting ring; 72. Through hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] Specific implementation examples are given below.
[0025] like Figures 1 to 5 As shown in the embodiment of this utility model, the water pressure self-tightening sealing structure of the coal mine water-stop sleeve includes a water supply pipe 1; two sets of water supply pipes 1 are provided, and flanges 2 are fixedly installed on the side of the two sets of water supply pipes 1 that are close to each other. Bolts 3 are threadedly connected to the surface of the flanges 2. A guide assembly 4 is provided on the side of the flanges 2 away from the water supply pipes 1, and a sealing assembly 5 is provided on the surface of the guide assembly 4; a leak-proof mechanism 6 is provided on the inner wall of the water supply pipes 1; a sliding assembly 7 is provided at the end of the guide rod 42 away from the first connecting ring 41; the guide assembly 4 includes a first connecting ring 41 and guide rods 42. The first connecting ring 41 is threadedly connected to one side of one set of flanges 2 by bolts 3. Four sets of guide rods 42 are provided, and the four sets of guide rods 42 are fixedly installed in a ring on the side of the first connecting ring 41 away from the flange 2; the sealing assembly 5 includes sealing rings 51 and rubber sleeves 52. Several sets of sealing rings 51 are provided, and several sets of rubber sleeves 52 are provided. The sealing ring 51 is slidably mounted on the surface of the guide rod 42. The rubber sleeve 52 is fixedly mounted on the inner wall of the sealing ring 51. The sliding assembly 7 includes a second connecting ring 71 and a through hole 72. The second connecting ring 71 is slidably mounted on the end of the guide rod 42 away from the first connecting ring 41. Four sets of through holes 72 are provided. The four sets of through holes 72 are opened in a ring on the side of the flange 2 near the guide rod 42. The flange 2 is movably inserted into the guide rod 42 through the opening of the through holes 72. The leak-proof mechanism 6 includes a fixing ring 61, a rubber ring 62 and a groove 63. Two sets of fixing rings 61 are provided. The two sets of fixing rings 61 are fixedly mounted on the inner walls of the first connecting ring 41 and the second connecting ring 71, respectively. The inner wall of the fixing ring 61 is fixedly mounted with the rubber ring 62. The side of the rubber ring 62 away from the fixing ring 61 has a groove 63. The surface of the water pipe 1 is coated with an anti-corrosion coating. The rubber ring 62 is made of fluororubber.
[0026] like Figures 1 to 5As shown, the cooperation between the first connecting ring 41 and the guide rod 42 provides guidance for the sealing assembly 5, maintains the sealing assembly 5 in its optimal arrangement, prevents the sealing ring 51 from deforming or twisting, and also provides guidance for the flange 2, ensuring precise alignment of the two flanges 2 and preventing deviations. The cooperation between the sealing ring 51 and the rubber sleeve 52 improves sealing efficiency through mutual compression between the pipes when water pressure increases, ensuring that high-pressure water does not affect the sealing performance. The cooperation between the second connecting ring 71 and the through hole 72 limits the sealing ring 51, preventing it from slipping off the surface of the guide rod 42, ensuring that the sealing assembly 5 can... The water supply pipe 1 can be used normally within the specified range. The combination of the fixing ring 61, rubber ring 62 and inclined groove 63 can use the pressure of the water flow to expand, so that the rubber ring 62 can fit tightly with the water supply pipe 1 to prevent water leakage. The higher the water pressure, the stronger the sealing performance. The application of anti-corrosion coating can prevent the water supply pipe 1 from rusting or corroding during long-term use, and can also reduce the frequency of maintenance and reduce the risk of leakage. Fluororubber has a relatively hard property, can better maintain its shape, and will not be washed away when subjected to a certain water flow impact force. It also has a certain degree of flexibility. When the internal water pressure is high, it can expand outward to enhance the sealing performance.
[0027] Working principle: During operation, the water supply pipe 1 is first installed in the usage position. Then, the first connecting ring 41 and the second connecting ring 71 are connected to the flange 2 using bolts 3. When the second connecting ring 71 aligns with the flange 2, the guide rod 42 will insert into the inner wall of the flange 2 through the through hole 72. It is then ready for use. During use, the two sets of water supply pipes 1 will slide to one side due to water pressure. When the water supply pipes 1 slide, they will drive the first connecting ring 41 and the guide rod 42 to move. When the guide rod 42 moves, it will slide between the second connecting ring 71 and the inner wall of the flange 2, simultaneously sealing the connection. The sealing ring 51 and the rubber sleeve 52 will be continuously squeezed until multiple sets of sealing rings 51 squeeze each other to achieve a self-tightening seal. The pressure of the water flow squeezes the sealing ring 51, which significantly improves the sealing performance. At the same time, when the water flows through the rubber ring 62, the water flow will be delivered into the rubber ring 62 through the inclined groove 63. Since the internal volume of the rubber ring 62 is small, the water flow will increase the water pressure inside the rubber ring 62 when it enters the rubber ring 62. When the water pressure increases, it will squeeze the rubber ring 62 outward, causing it to expand, thereby enabling the rubber ring 62 to fit tightly with the water supply pipe 1, further improving the sealing performance.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A water pressure self-tightening sealing structure for a coal mine water-stop sleeve, comprising a water supply pipe (1); characterized in that: The water supply pipe (1) is provided in two sets. Flanges (2) are fixedly installed on the side of the two sets of water supply pipes (1) that are close to each other. Bolts (3) are threaded on the surface of the flanges (2). A guide assembly (4) is provided on the side of the flanges (2) away from the water supply pipes (1). A sealing assembly (5) is provided on the surface of the guide assembly (4). The guide assembly (4) includes a first connecting ring (41) and a guide rod (42). The first connecting ring (41) is threadedly connected to one side of one of the flanges (2) by bolts (3). There are four sets of guide rods (42), and the four sets of guide rods (42) are fixedly installed in a ring on the side of the first connecting ring (41) away from the flange (2). The sealing assembly (5) includes a sealing ring (51) and a rubber sleeve (52). The sealing ring (51) is provided in several groups, and the several groups of sealing rings (51) are slidably installed on the surface of the guide rod (42) in a transverse manner. The rubber sleeve (52) is fixedly installed on the inner wall of the sealing ring (51).
2. The water pressure self-tightening sealing structure for coal mine water-stop sleeves according to claim 1, characterized in that: The inner wall of the water pipe (1) is provided with a leak-proof mechanism (6).
3. The water pressure self-tightening sealing structure for coal mine water-stop sleeves according to claim 1, characterized in that: A sliding component (7) is provided at the end of the guide rod (42) away from the first connecting ring (41).
4. The water pressure self-tightening sealing structure for coal mine water-stop sleeves according to claim 3, characterized in that: The sliding assembly (7) includes a second connecting ring (71) and a through hole (72). The second connecting ring (71) is slidably installed on the end of the guide rod (42) away from the first connecting ring (41). The through hole (72) has four sets. The four sets of through holes (72) are opened in a ring on the side of the flange (2) near the guide rod (42). The flange (2) is movably inserted into the guide rod (42) through the opening of the through hole (72).
5. The water pressure self-tightening sealing structure for coal mine water-stop sleeves according to claim 2, characterized in that: The leak-proof mechanism (6) includes a fixing ring (61), a rubber ring (62), and a groove (63). There are two sets of fixing rings (61). The two sets of fixing rings (61) are respectively fixedly installed on the inner walls of the first connecting ring (41) and the second connecting ring (71). The inner wall of the fixing ring (61) is fixedly installed with the rubber ring (62). The rubber ring (62) has a groove (63) on the side away from the fixing ring (61).
6. The water pressure self-tightening sealing structure for coal mine water-stop sleeves according to claim 1, characterized in that: The surface of the water pipe (1) is coated with an anti-corrosion coating.
7. The water pressure self-tightening sealing structure for coal mine water-stop sleeves according to claim 5, characterized in that: The rubber ring (62) is made of fluororubber.