Gas sealing screw plug

Abstract

The utility model provides a gas sealing screw plug, which relates to the technical field of industrial sealing elements, and comprises a sealing screw plug main body, limiting ring grooves are vertically arranged in an adjusting screw sleeve in an array distribution manner, a linear sliding groove is vertically arranged between adjacent limiting ring grooves, and linear sliding blocks are arranged on two sides of the bottom end of a telescopic screw plug. A connecting ring is arranged at the position, close to the top end, of the telescopic screw plug in a threaded connection mode, positioning coarse threads are arranged on the surface of the telescopic screw plug, and positioning coarse threads are arranged at the interval positions between the adjacent limiting ring grooves, so that length adjustment of the whole sealing screw plug body is achieved, the contact range when the sealing screw plug is sealed with a gas pipeline is enlarged, and the connection tightness is improved; therefore, the sealing requirements of different lengths and depth sizes in the pipeline during gas installation are adjusted in a matched mode, meanwhile, the telescopic plug screw can be disassembled through outward stretching after reverse rotation, internal devices can be replaced conveniently, the installation process is simple, and disassembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial sealing parts, in particular to a sealing screw plug for gas. Background Art

[0002] During the installation and maintenance of gas pipelines, sealing performance is crucial, which is directly related to the safety and stability of the gas system. Traditional gas sealing screw plugs usually adopt a fixed-size structural design and cannot be flexibly adjusted according to the requirements of different lengths and depths inside the gas pipeline. This brings many inconveniences in practical applications. For example, when there are slight differences in the pipeline connection or special sealing treatment is required, traditional sealing screw plugs often find it difficult to achieve the ideal sealing effect, and may even cause the risk of gas leakage. In addition, the removal and replacement process of traditional sealing screw plugs is also relatively complicated, requiring special tools and technical support, which increases the maintenance cost and difficulty.

[0003] According to the Chinese publication number "CN204784686U", a safety screw plug for gas valve detection and release is installed in the release port of the valve side wall. The safety screw plug has a sealing end face and a nut and a screw respectively located on both sides of the sealing end face, wherein the surface of the screw has an external thread and an L-shaped or T-shaped exhaust channel is punched inside the screw, the exhaust channel is connected to the valve cavity and forms more than one exhaust opening on the outer periphery of the screw near the sealing end face, and an annular sealing ring groove is provided on the bottom side of the sealing end face and a sealing ring is embedded; by operating the safety screw plug to tighten or slightly loosen 1-2 threads, the exhaust channel can be segmented or opened. The application of the technical solution of the utility model only requires slightly loosening the screw plug to quickly exhaust the gas, which saves time for downstream construction and emergency repairs, and has high work efficiency; and the safety screw plug has no hidden danger of being blown off by the medium, and the nut is not easy to be hit and loosened to cause leakage, so it is safer to use.

[0004] The above patents and prior art have the problem that the size of the sealing screw plug is difficult to adjust when sealing the gas, and cannot adapt to the sealing requirements of different depths. At the same time, the fixed structure during sealing makes it difficult to disassemble the entire sealing screw plug, resulting in inconvenience in subsequent maintenance. Utility Model Content

[0005] The utility model aims to solve the disadvantages of the prior art that the gas sealing screw plug is difficult to adjust and disassemble, and proposes a gas sealing screw plug.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas sealing plug, including a sealing plug body, the sealing plug body including an adjusting screw sleeve and a telescopic plug, the adjusting screw sleeve is provided with limiting ring grooves distributed in a vertical array inside, and linear slide grooves are vertically arranged between adjacent limiting ring grooves, linear slide blocks are arranged on both sides of the bottom end of the telescopic plug, and a connecting ring is threadedly connected to the telescopic plug near the top end, and a positioning coarse thread is arranged on the surface of the telescopic plug, the spacing between adjacent positioning coarse threads is the same as the spacing between adjacent limiting ring grooves, and a positioning coarse thread is arranged at the spacing position between adjacent limiting ring grooves.

[0007] Preferably, the height of the linear slider matches the vertical height clearance between the top surface and the bottom surface of the limiting ring groove, and the surface contour of the linear slider matches the clearance of the inner wall of the linear slide groove.

[0008] Preferably, the vertical spacing between adjacent limiting ring grooves is the same as the vertical height of the limiting ring grooves, and a sealing strip is provided on the outer surface of the adjusting screw sleeve.

[0009] Preferably, a sealing ring is provided between the connecting ring and the adjusting screw sleeve, and the sealing ring is sleeved on the top surface of the telescopic screw plug. There are multiple connecting rings, and the connecting rings correspond to the sealing rings one by one.

[0010] Preferably, the surface of the telescopic screw plug near the top is provided with a positioning fine thread, the inner wall of the adjusting screw sleeve near the top is provided with a positioning fine thread, and the connecting ring is threadedly connected to the surface of the telescopic screw plug through the positioning fine thread.

[0011] Preferably, the bottom edge of the connecting ring coincides with the top edge of the adjusting screw sleeve, and the linear slide groove penetrates the top of the adjusting screw sleeve.

[0012] Preferably, the edge of the adjusting screw sleeve surface is rounded, and the sealing strips are evenly distributed in a vertical array on the outer surface of the adjusting screw sleeve.

[0013] Beneficial Effects

[0014] In the utility model, a sealing screw plug body is used for installation through an adjusting screw sleeve and a telescopic screw plug, so that the telescopic screw plug can be inserted into the adjusting screw sleeve and adjusted and installed in cooperation with limit ring grooves of different heights after the linear slider is inserted. After engagement, the telescopic screw plug is rotated to position the adjusting screw sleeve after installation through the positioning coarse thread on the surface, thereby realizing the length adjustment of the entire sealing screw plug body, increasing the contact range when sealing with the gas pipeline, and increasing the tightness of the connection, thereby realizing adaptive adjustment to the sealing requirements of different lengths and depths of the pipeline when installing the gas. At the same time, the telescopic screw plug can be disassembled by reversing and stretching it outwards, which is convenient for replacing internal components, and the installation process is simple and the disassembly is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the internal part of the utility model;

[0016] Figure 2 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 3 This is a split structure diagram of the utility model;

[0018] Figure 4 This is a structural diagram of the telescopic screw plug of the utility model;

[0019] Figure 5 This is a structural diagram of the internal part of the adjusting screw sleeve of the utility model;

[0020] Figure 6 This is a diagram showing the internal structure of the sealing screw plug body in the second specific embodiment of the present utility model;

[0021] Figure 7 This is a disassembled structural diagram of the sealing screw plug body in the specific embodiment 2 of the present utility model.

[0022] Legend:

[0023] 1. Sealing screw plug body; 101. Adjusting screw sleeve; 102. Telescopic screw plug; 103. Limiting ring groove; 104. Linear slide groove; 105. Linear slide block; 106. Positioning coarse thread; 107. Positioning fine thread; 108. Sealing ring; 109. Connecting ring; 110. Sealing strip. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0025] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:

[0027] Reference Figure 1-7A gas sealing screw plug comprises a sealing screw plug body 1, wherein the sealing screw plug body 1 comprises an adjusting screw sleeve 101 and a telescopic screw plug 102, the bottom edge of a connecting ring 109 coincides with the top edge of the adjusting screw sleeve 101, a linear slide groove 104 penetrates the top of the adjusting screw sleeve 101, and a connecting ring 109 is provided near the top of the telescopic screw plug 102, and the working principle of the gas sealing screw plug is based on the precise matching and adjustment mechanism between the adjusting screw sleeve 101 and the telescopic screw plug 102. In order to ensure the sealing of the entire telescopic screw plug 102 and the adjusting screw sleeve 101 when they are connected at the end, a sealing ring 108 is used to cooperate with the connecting ring 109 for positioning and sealing, so as to ensure the sealing of the connection position between the top of the adjusting screw sleeve 101 and the telescopic screw plug 102.

[0028] When the length of the entire sealing screw plug body 1 is adjusted, since the limiting ring grooves 103 are vertically arranged in an array inside the adjusting screw sleeve 101, a linear slide groove 104 is vertically arranged between adjacent limiting ring grooves 103, and the linear slide groove 104 is used to connect adjacent limiting ring grooves 103 and to guide the linear slide block 105 for sliding. Linear slide blocks 105 are arranged on both sides of the bottom end of the telescopic screw plug 102, and a positioning coarse thread 106 is arranged on the surface of the telescopic screw plug 102. The spacing between adjacent positioning coarse threads 106 is the same as the spacing between adjacent limiting ring grooves 103, and a positioning coarse thread 106 is arranged at the spacing position between adjacent limiting ring grooves 103. When the telescopic screw plug 102 is inserted into the adjusting screw sleeve 101, the linear slide block 105 at its bottom will slide along the linear slide groove 104 inside the adjusting screw sleeve 101 until it encounters a suitable limiting ring groove 103, and the telescopic screw plug 102 is rotated to make the linear slide block 105 enter the limiting ring groove 103 at this position to achieve engagement. In this process, The expansion screw plug 102 can be adjusted to different length positions as needed to adapt to different sealing requirements. After engaging, by rotating the expansion screw plug 102, the positioning coarse thread 106 on its surface will interact with the thread structure inside the adjusting screw sleeve 101 to achieve tightening and positioning, thereby ensuring the stability and sealing of the sealing screw plug body 1 at the specified position. When disassembling, it is only necessary to reverse the expansion screw plug 102 until the linear slider 105 and the linear slide groove 104 coincide with each other, and then push the expansion screw plug 102 up and down, and readjust the position for positioning. Through the cooperation of the adjusting screw sleeve 101 and the expansion screw plug 102, the flexible adjustment of the length of the sealing screw plug is achieved, which can adapt to the installation requirements of different sizes and depths, improves the flexibility and convenience of use, and the installation process is simple and fast, does not require complicated tools or skills, and reduces the installation cost and time cost. When replacement or maintenance is required, it is easy to disassemble by rotating the expansion screw plug 102 in the opposite direction, which is convenient for subsequent maintenance and maintenance work.

[0029] To ensure regular adjustment of the entire device, the height of the linear slider 105 is set to match the vertical height gap between the top and bottom surfaces of the limiting ring groove 103, the surface contour of the linear slider 105 is matched with the inner wall gap of the linear slide groove 104, the vertical spacing between adjacent limiting ring grooves 103 is the same as the vertical height of the limiting ring groove 103, and the vertical height of each limiting ring groove 103 is taken as a unit value, which is convenient for the telescopic screw plug 102 to judge the amount of telescopic expansion.

[0030] In order to increase the sealing of the edges and exterior of the entire device, a sealing strip 110 is provided on the outer surface of the adjusting screw sleeve 101. The edge of the surface of the adjusting screw sleeve 101 is rounded, and the sealing strips 110 are evenly distributed in a vertical array on the outer surface of the adjusting screw sleeve 101. By setting the external sealing strip 110, the sealing and friction between the adjusting screw sleeve 101 and the external pipeline are increased to prevent falling off. At the same time, a positioning fine thread 107 is provided on the surface of the telescopic screw plug 102 near the top, and a positioning fine thread 107 is provided on the inner wall of the adjusting screw sleeve 101 near the top. The connecting ring 109 is threadedly connected to the surface of the telescopic screw plug 102 through the positioning fine thread 107, so that the adjusting screw sleeve 101 and the telescopic screw sleeve can be re-positioned through the positioning fine thread 107, and the connecting ring 109 maintains a stable connection with the telescopic screw plug 102 through the positioning fine thread 107. Specific embodiment 2:

[0032] Reference Figure 1-7 A sealing ring 108 is provided between the connecting ring 109 and the adjusting screw sleeve 101, and the sealing ring 108 is sleeved on the top surface of the telescopic screw plug 102. There are multiple connecting rings 109, and the connecting rings 109 correspond to the sealing rings 108 one by one. When the entire telescopic screw plug 102 is adjusted, in order to ensure the external regularity of the entire sealing screw plug body 1, the number of connecting rings 109 is increased according to the adjustment amount of the telescopic screw plug 102, such as Figure 1 As shown, at this time, the telescopic screw plug 102 and the adjusting screw sleeve 101 maintain the smallest adjustment gap, the bottom surface of the telescopic screw plug 102 is against the inner bottom surface of the adjusting screw sleeve 101, and a group of connecting rings 109 are set on the top of the telescopic screw plug 102 for use. The top surface of the entire telescopic screw plug 102 is coplanar with the top surface of the connecting ring 109, and the entire sealing screw plug body 1 presents a cylindrical shape with a regular structure, such as Figure 6 As shown, the telescopic screw plug 102 is adjusted upward by a limit ring, and the entire sealing screw plug body 1 is growing. To ensure regularity, two additional sets of connecting rings 109 and sealing rings 108 are added to the top of the telescopic screw plug 102 for use to ensure the overall regularity. Generally, one or two connecting rings 109 are added for each adjustment of the height of a limit ring groove 103 to ensure the structural regularity of the entire sealing screw plug body 1. Specific embodiment 2:

[0034] Reference Figure 1-7In order to prevent the positioning fine thread 107 and the positioning coarse thread 106 from interfering with each other when the telescopic screw plug 102 moves, the thread teeth of the positioning coarse thread 107 and the positioning fine thread 106 are set to be shorter. When a vertical force is applied to the telescopic screw plug 102, the positioning coarse threads 107 can slide directly in the vertical direction, but the vertical limit is maintained after rotational engagement. The positioning fine thread 106 remains the same, preventing the positioning fine thread 106 and the positioning coarse thread 107 from interfering with the vertical movement of the telescopic screw plug 102 when they are not threadedly connected to the telescopic screw plug 102.

[0035] In summary:

[0036] The sealing screw plug body 1 is used for installation and use through the adjustment screw sleeve 101 and the expansion screw plug 102, so that the expansion screw plug 102 can be inserted into the adjusting screw sleeve 101, and after the linear slider 105 is inserted, it can be adjusted and installed in conjunction with the limit ring grooves 103 of different heights. After the expansion screw plug 102 is engaged, it is rotated to position the adjusting screw sleeve 101 after installation through the positioning coarse thread 106 on the surface, so as to adjust the length of the entire sealing screw plug body 1, increase the contact range when sealing with the gas pipeline, and increase the tightness of the connection, so as to achieve adaptive adjustment to the sealing requirements of different lengths and depths of the pipeline during gas installation. At the same time, the expansion screw plug 102 can be disassembled by reversing and stretching it outwards, which is convenient for replacing internal components, and the installation process is simple and the disassembly is convenient.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas sealing screw plug, comprising a sealing screw plug body (1), characterized in that: The sealing screw plug body (1) comprises an adjusting screw sleeve (101) and a telescopic screw plug (102); the adjusting screw sleeve (101) is provided with limiting ring grooves (103) arranged in a vertical array; a linear slide groove (104) is vertically arranged between adjacent limiting ring grooves (103); linear slide blocks (105) are arranged on both sides of the bottom end of the telescopic screw plug (102); a connecting ring (109) is threadedly connected near the top end of the telescopic screw plug (102); a positioning coarse thread (106) is arranged on the surface of the telescopic screw plug (102); the spacing between adjacent positioning coarse threads (106) is the same as the spacing between adjacent limiting ring grooves (103); and a positioning coarse thread (106) is arranged at the spacing position between adjacent limiting ring grooves (103).

2. A gas sealing screw plug according to claim 1, characterized in that: The height of the linear slider (105) matches the vertical height clearance between the top surface and the bottom surface of the limiting ring groove (103), and the surface contour of the linear slider (105) matches the inner wall clearance of the linear slide groove (104).

3. A gas sealing screw plug according to claim 1, characterized in that: The vertical spacing between adjacent limiting ring grooves (103) is the same as the vertical height of the limiting ring grooves (103), and a sealing strip (110) is provided on the outer surface of the adjusting screw sleeve (101).

4. A gas sealing screw plug according to claim 1, characterized in that: A sealing ring (108) is provided between the connecting ring (109) and the adjusting screw sleeve (101), and the sealing ring (108) is sleeved on the top surface of the telescopic screw plug (102). There are a plurality of connecting rings (109), and the connecting rings (109) correspond to the sealing rings (108) one by one.

5. A gas sealing screw plug according to claim 1, characterized in that: The telescopic screw plug (102) is provided with a positioning fine thread (107) on its surface near the top end, the inner wall of the adjusting screw sleeve (101) is provided with a positioning fine thread (107) near the top end, and the connecting ring (109) is threadedly connected to the surface of the telescopic screw plug (102) via the positioning fine thread (107).

6. A gas sealing screw plug according to claim 1, characterized in that: The bottom edge of the connecting ring (109) coincides with the top edge of the adjusting screw sleeve (101), and the linear slide groove (104) penetrates the top of the adjusting screw sleeve (101).

7. A gas sealing screw plug according to claim 3, characterized in that: The edge of the surface of the adjusting screw sleeve (101) is rounded, and the sealing strips (110) are evenly distributed in a vertical array on the outer surface of the adjusting screw sleeve (101).

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