Simple waterproof mechanism

Abstract

The utility model discloses a simple waterproof mechanism which comprises a first pipe connecting cylinder sleeve, a second pipe connecting cylinder sleeve and a third pipe connecting cylinder sleeve, the opposite ends of the first pipe connecting cylinder sleeve and the second pipe connecting cylinder sleeve are connected with pipelines, the outer side of the end, facing the second pipe connecting cylinder sleeve, of the first pipe connecting cylinder sleeve is provided with an outer annular inclined face, and the outer side of the end, facing the third pipe connecting cylinder sleeve, of the second pipe connecting cylinder sleeve is provided with an inner annular inclined face. The inner side of the end, facing the first pipe connecting cylinder sleeve, of the second pipe connecting cylinder sleeve is provided with an inner annular inclined face matched with the outer annular inclined face, the end of the first pipe connecting cylinder sleeve and the end of the second pipe connecting cylinder sleeve are in butt joint, in the process, the third pipe connecting cylinder sleeve is rotated to enable the third pipe connecting cylinder sleeve and the first pipe connecting cylinder sleeve to form stable threaded connection, and therefore the pipe connecting cylinder sleeve is prevented from being damaged. And after completion, the surfaces of the inner annular inclined surface and the outer annular inclined surface and the trapezoidal sealing ring sleeve at the front end are tightly propped against each other, so that the sealing area and the sealing effect between joints are greatly increased, and meanwhile, the phenomena of internal overflow, extrusion and external seepage caused by non-uniform stress of a radial contact surface in traditional flange connection are also avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, specifically a simple waterproof mechanism. Background Technology

[0002] Water transmission pipelines refer to the pipeline systems from water sources to water treatment plants, or from water treatment plants to water distribution networks when the water treatment plant is far from the water supply area; examples include urban sewage pipelines, tap water supply pipelines, and industrial production water transmission pipelines. Currently, in industrial production water transmission pipelines, unions are often used to connect the ends of two pipes, but there are still some shortcomings in practical applications: most existing pipe unions use flanges, bolts, and gaskets for connection, but during long-term use, equipment vibration, position changes, etc., may cause some bolts at the flange connection to loosen. Once loosened, gaps can easily appear at the edge of the gasket, leading to leakage; furthermore, uneven stress on the radial contact surface of the flange may cause internal overflow, compression, and external seepage. Therefore, a simple waterproofing mechanism is provided to solve the above problems. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] Therefore, the purpose of this utility model is to provide a simple waterproof mechanism to solve the problems mentioned in the background art, such as the loosening of some bolts at the flange connection due to equipment vibration, position changes, etc. during long-term use of existing pipe joints. Once loosened, gaps can easily appear at the edge of the sealing gasket, leading to leakage. Furthermore, uneven stress on the radial contact surface of the flange may also cause internal overflow, compression, and external seepage during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a simple waterproof mechanism, comprising a first pipe sleeve, a second pipe sleeve, and a third pipe sleeve. Both the opposite ends of the first and second pipe sleeves are connected to pipes. The outer side of the end of the first pipe sleeve facing the second pipe sleeve has an outer annular inclined surface. A trapezoidal sealing ring is fitted around the outer side and front end of the outer annular inclined surface. The inner side of the end of the second pipe sleeve facing the first pipe sleeve has an inner annular inclined surface that mates with the outer annular inclined surface. A third pipe sleeve is radially slidably fitted around the outer side of the second pipe sleeve. The inner side of one end of the third pipe sleeve is threadedly connected to the outer side of the first pipe sleeve. A locking screw is also inserted between the outer end of the third pipe sleeve and the first pipe sleeve.

[0006] As a preferred embodiment of the simple waterproof mechanism described in this utility model, the outer annular inclined surface also has a concave groove that matches the trapezoidal sealing ring, and the outer annular inclined surface, the trapezoidal sealing ring, and the inner annular inclined surface have the same inclination angle.

[0007] The trapezoidal sealing ring also has several annular raised lines on its outer periphery.

[0008] As a preferred embodiment of the simple waterproof mechanism described in this utility model, the outer periphery of the first pipe sleeve has an external thread that is adjacent to and connected to the outer annular inclined surface, and the inner side of one end of the third pipe sleeve has an internal thread that matches the external thread.

[0009] As a preferred embodiment of the simple waterproof mechanism described in this utility model, at least one positioning screw hole is provided on the outer side of the first pipe sleeve, and a second positioning screw hole corresponding to the first positioning screw hole is provided on the outer side of the third pipe sleeve, and the locking screw is threadedly matched with the first and second positioning screw holes.

[0010] As a preferred embodiment of the simple waterproof mechanism described in this utility model, the second pipe sleeve has an annular locking block on its outer periphery, and the third pipe sleeve has an annular locking groove on its inner side that cooperates with the annular locking block.

[0011] As a preferred embodiment of the simple waterproof mechanism described in this utility model, the first pipe sleeve has a positioning groove one on the inner side of the opposite end of the outer annular inclined surface, and the second pipe sleeve has a positioning groove two that matches the positioning groove one on the inner side of the opposite end of the inner annular inclined surface.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This simple waterproof mechanism connects the ends of the first and second pipe sleeves. During this process, the third pipe sleeve is rotated to form a stable threaded connection with the first pipe sleeve. After completion, the inner annular bevel and the outer annular bevel surface and the trapezoidal sealing ring at the front end form a tight abutment, which greatly increases the sealing area and sealing effect between the joints. At the same time, it avoids the phenomenon of internal overflow, squeezing and external leakage caused by uneven radial contact surface force in traditional flange connections. Then, the locking screws are screwed into the second positioning screw hole and the first positioning screw hole in sequence. In this way, the threads between the first and third pipe sleeves can be effectively prevented from loosening due to rotation. The greater the rotation force, the tighter the locking force of the locking screws. This effectively prevents and reduces leakage caused by thread loosening in traditional flange connections. This connection mechanism is not only simple to operate, but also significantly improves the waterproof effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model after connection;

[0014] Figure 2 This is a schematic diagram of the structure of the pipe fitting sleeve after disassembly.

[0015] Figure 3 This is a side view of the internal structure of the pipe fitting sleeve of this utility model;

[0016] Figure 4 This utility model Figure 3 A schematic diagram showing the detailed structure of a part of the structure.

[0017] In the diagram: 100, first pipe fitting sleeve; 110, outer annular bevel; 120, trapezoidal sealing ring; 121, annular raised pattern; 130, external thread; 140, positioning screw hole one; 150, positioning pipe groove one; 200, second pipe fitting sleeve; 210, inner annular bevel; 220, annular retaining block; 230, positioning pipe groove two; 300, third pipe fitting sleeve; 310, internal thread; 320, annular retaining groove; 330, positioning screw hole two; 400, locking screw. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] Figures 1-4 The diagram shown is a complete structural schematic of a simple waterproof mechanism according to this utility model. Please refer to [link / reference]. Figures 1-4 This embodiment of a simple waterproofing mechanism includes a first pipe sleeve 100, a second pipe sleeve 200, and a third pipe sleeve 300. Pipes are connected to opposite ends of both the first and second pipe sleeves 100. The outer side of the first pipe sleeve 100 facing the second pipe sleeve 200 has an outer annular inclined surface 110. A trapezoidal sealing ring 120 is fitted around the outer side and front end of the outer annular inclined surface 110. The inner side of the second pipe sleeve 200 facing the first pipe sleeve 100 has an inner annular inclined surface 210 that mates with the outer annular inclined surface 110. The third pipe sleeve 300 is radially slidably fitted onto the outer side of the second pipe sleeve 200. A threaded connection is made between the inner side of one end of the third pipe sleeve 300 and the outer side of the first pipe sleeve 100. A locking screw 400 is also inserted between the outer end of the third pipe sleeve 300 and the first pipe sleeve 100.

[0022] The outer annular inclined surface 110 also has a concave groove that matches the trapezoidal sealing ring 120. The outer annular inclined surface 110, the trapezoidal sealing ring 120, and the inner annular inclined surface 210 have the same inclination angle. The outer periphery of the trapezoidal sealing ring 120 also has several annular raised lines 121. The annular raised lines 121 effectively increase the linear sealing effect of the trapezoidal sealing ring 120. The outer periphery of the first pipe sleeve 100 has an external thread 130 that connects adjacent to the outer annular inclined surface 110. The inner side of one end of the third pipe sleeve 300 has an internal thread 310 that matches the external thread 130. The outer side of the first pipe sleeve 100 also has at least one positioning screw hole 140, and the outer side of the third pipe sleeve 300 also has a positioning screw hole 330 corresponding to the positioning screw hole 140. The locking screw 400 is threadedly matched with the positioning screw hole 140 and the positioning screw hole 330. During connection, the ends of the first pipe sleeve 100 and the second pipe sleeve 200 are joined together. During this process, the third pipe sleeve 300 is rotated to form a stable threaded connection with the first pipe sleeve 100. After completion, the inner annular inclined surface 210 and the outer annular inclined surface 110 and the trapezoidal sealing ring 120 at the front end form a tight abutment, which greatly increases the sealing area and sealing effect between the joints. At the same time, it avoids the phenomenon of internal overflow, squeezing and external leakage caused by uneven radial contact surface force in traditional flange connections. Then, the locking screw 400 is screwed into the positioning screw hole 330 and the positioning screw hole 140 in sequence. In this way, the threads between the first pipe sleeve 110 and the third pipe sleeve 300 can be effectively prevented from loosening due to rotation. The greater the rotation force, the tighter the locking force of the locking screw 400, which effectively prevents and reduces leakage caused by thread loosening in traditional flange connections. This connection mechanism is not only simple to operate, but also significantly improves the waterproof effect.

[0023] Preferably, the second pipe sleeve 200 has an annular retaining block 220 on its outer periphery, and the third pipe sleeve 300 has an annular retaining groove 320 on its inner side that mates with the annular retaining block 220. It can be understood that through the circumferential sliding engagement of the annular retaining block 220 and the annular retaining groove 320, an effective fit is formed between the first, second, and third pipe sleeves, resulting in a more secure connection.

[0024] Preferably, the first pipe sleeve 100 has a positioning groove 150 on the inner side of the opposite end of the outer annular inclined surface 110, and the second pipe sleeve 200 has a positioning groove 230 on the inner side of the opposite end of the inner annular inclined surface 210, which matches the positioning groove 150. It is understood that, normally, the inner diameters of the positioning groove 150 and the positioning groove 230 are the same, because pipes of the same diameter need to be connected. It should be noted that the inner diameter of the pipe matches or is larger than the inner diameters of the first pipe sleeve 100 and the second pipe sleeve 200 to ensure smooth water flow.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A simple waterproofing mechanism, characterized in that, The system includes a first pipe fitting sleeve (100), a second pipe fitting sleeve (200), and a third pipe fitting sleeve (300). Pipes are connected to opposite ends of both the first and second pipe fitting sleeves (100 and 200). The first pipe fitting sleeve (100) has an outer annular inclined surface (110) on its outer side facing the second pipe fitting sleeve (200). A trapezoidal sealing ring (120) is fitted around the outer side and front end of the outer annular inclined surface (110). The second pipe fitting sleeve (200... The inner side of the end facing the first pipe sleeve (100) has an inner annular inclined surface (210) that matches the outer annular inclined surface (110). The outer side of the second pipe sleeve (200) is radially slidably fitted with a third pipe sleeve (300). The inner side of one end of the third pipe sleeve (300) is threadedly connected to the outer side of the first pipe sleeve (100). A locking screw (400) is also inserted between the outer end of the third pipe sleeve (300) and the first pipe sleeve (100).

2. The simple waterproofing mechanism according to claim 1, characterized in that: The outer annular inclined surface (110) also has a concave groove that matches the trapezoidal sealing ring (120), and the outer annular inclined surface (110), the trapezoidal sealing ring (120) and the inner annular inclined surface (210) have the same inclination angle; The trapezoidal sealing ring (120) also has several annular raised lines (121) on its outer periphery.

3. The simple waterproofing mechanism according to claim 1, characterized in that: The first pipe sleeve (100) has an external thread (130) on its outer periphery that is adjacent to and connected to the outer annular inclined surface (110), and the third pipe sleeve (300) has an internal thread (310) on one end of its inner side that matches the external thread (130).

4. A simple waterproofing mechanism according to claim 1, characterized in that: The first pipe sleeve (100) is provided with at least one positioning screw hole (140) on its outer side, and the third pipe sleeve (300) is provided with a positioning screw hole (330) corresponding to the positioning screw hole (140) on its outer side. The locking screw (400) is threadedly matched with the positioning screw hole (140) and the positioning screw hole (330).

5. A simple waterproofing mechanism according to claim 1, characterized in that: The second pipe sleeve (200) has an annular retaining block (220) on its outer periphery, and the third pipe sleeve (300) has an annular retaining groove (320) on its inner side that cooperates with the annular retaining block (220).

6. A simple waterproofing mechanism according to claim 1, characterized in that: The first pipe sleeve (100) has a positioning groove one (150) on the inner side of the opposite end of the outer annular inclined surface (110), and the second pipe sleeve (200) has a positioning groove two (230) that matches the positioning groove one (150) on the inner side of the opposite end of the inner annular inclined surface (210).

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