CN204533920U - A kind of bellows selfsealings positive mechanical formula clamp sleeve - Google Patents
A kind of bellows selfsealings positive mechanical formula clamp sleeve Download PDFInfo
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- CN204533920U CN204533920U CN201520041533.4U CN201520041533U CN204533920U CN 204533920 U CN204533920 U CN 204533920U CN 201520041533 U CN201520041533 U CN 201520041533U CN 204533920 U CN204533920 U CN 204533920U
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- 238000007789 sealing Methods 0.000 claims abstract description 65
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 230000004323 axial length Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 16
- 239000002184 metal Substances 0.000 description 11
- 210000001503 joint Anatomy 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
一种波纹管自密封可靠机械式压紧套筒，其包含螺母(1)、算珠形卡套(2)、密封套(3)和接头(4)，所述接头(4)具有两个端口，在所述接头(4)的两个端口附近的外壁上设置有相反方向旋转的螺纹(6)；所述密封套(3)呈套筒状，所述密封套(3)的内径尺寸与所述波纹管(5)波谷的直径相匹配，所述密封套(3)的外径尺寸与所述螺母(1)的内径匹配；所述算珠形卡套(2)的横截面呈C形，在所述算珠形卡套(2)的侧壁上开设有贯穿头尾的纵向开口间隙(2-1)，所述算珠形卡套(2)外壁呈向外的弧形隆起，所述算珠形卡套(2)的内径尺寸与所述波纹管(5)的波谷的直径相匹配，所述算珠形卡套(2)的外径尺寸与所述螺母(1)的内径相匹配；所述螺母(1)一端为螺纹端(1-2)，另一端为限位处(1-1)。具有装卸方便、外形美观、密封可靠、密封寿命长和成本低等特点。
A bellows self-sealing and reliable mechanical compression sleeve, which includes a nut (1), a bead-shaped ferrule (2), a sealing sleeve (3) and a joint (4), and the joint (4) has two port, the outer wall near the two ports of the joint (4) is provided with threads (6) that rotate in opposite directions; the sealing sleeve (3) is in the shape of a sleeve, and the inner diameter of the sealing sleeve (3) is Matches the diameter of the trough of the bellows (5), the outer diameter of the sealing sleeve (3) matches the inner diameter of the nut (1); the cross section of the bead-shaped ferrule (2) is C shape, on the side wall of the bead-shaped ferrule (2), there is a longitudinal opening gap (2-1) through the head and tail, and the outer wall of the bead-shaped ferrule (2) is in an outward arc shape bulge, the inner diameter of the bead-shaped ferrule (2) matches the diameter of the trough of the bellows (5), and the outer diameter of the bead-shaped ferrule (2) matches the nut (1 ) to match the inner diameter; one end of the nut (1) is a threaded end (1-2), and the other end is a limiter (1-1). It has the characteristics of convenient loading and unloading, beautiful appearance, reliable sealing, long sealing life and low cost.
Description
技术领域 technical field
本实用新型涉及一种波纹管压紧套筒，特别是涉及一种波纹管自密封可靠机械式压紧套筒。 The utility model relates to a bellows pressing sleeve, in particular to a bellows self-sealing and reliable mechanical pressing sleeve.
背景技术 Background technique
不锈钢材料波纹管能够弯曲的特性，并兼有金属管材的优点，适合于自来燃气、水暖和油路管路中使用。为了使波纹管能与钢制或者PVC材料的硬质管道密封连接，目前市场上采用工程预制的接头或者采用压紧套筒的接头，但上述结构在安装和功能上存在缺陷： The stainless steel bellows can be bent and has the advantages of metal pipes, so it is suitable for use in tap gas, plumbing and oil pipelines. In order to enable the corrugated pipe to be sealed and connected with steel or PVC hard pipes, prefabricated joints or joints with compression sleeves are currently used in the market, but the above structures have defects in installation and function:
1.当采用工程预制的接头时： 1. When using prefabricated joints:
参加中国专利号为ZL 97225276.2的“插入式螺旋形波纹金属软连接管”、ZL 97225278.9的”螺旋形波纹金属软连接管”及ZL 01211062.0的“一种改进型金属软管”公开了三种加工具有螺旋形波纹金属管的软性连接管的结构和方案，其两端焊接有金属的螺纹连接接头；这三种涉及方案采用了波纹金属管主体，具有一定的挠性可随意弯曲而不会弯折，而且螺纹连接方便可靠，可彻底杜绝漏气、阻气、漏水等现象，从而显出因燃气泄露而引起中毒、爆炸事件的事故隐患，实际使用效果很好。但是由于在上述三种技术方案中，波纹金属软管主体的端头都必须焊接有一金属接头，这就对其长度尺寸进行了限制，一旦在出厂时确定就无法更改，更无法在现场根据所需长度进行自由裁剪。而不能得到广泛应用各种安装场合。 Participated in the Chinese Patent No. ZL 97225276.2 for "Plug-in Spiral Corrugated Metal Flexible Connecting Pipe", ZL 97225278.9 for "Spiral Corrugated Metal Flexible Connecting Pipe" and ZL 01211062.0 for "An Improved Metal Flexible Pipe" and disclosed three kinds of processing The structure and scheme of the flexible connecting pipe with spiral corrugated metal pipe, and the two ends of which are welded with metal threaded joints; these three related schemes use the main body of corrugated metal pipe, which has a certain degree of flexibility and can be bent at will without Bending, and the screw connection is convenient and reliable, which can completely eliminate the phenomenon of gas leakage, gas blockage, water leakage, etc., so as to show the hidden dangers of poisoning and explosion accidents caused by gas leakage, and the actual use effect is very good. But because in above-mentioned three kinds of technical schemes, the end of corrugated metal hose main body all must be welded with a metal joint, and this has just limited its length dimension, once it is determined when leaving the factory, it cannot be changed, let alone on-site according to the required Free cut to length. And can not be widely used in various installation occasions.
2.当采用压紧套管接头时： 2. When using compression sleeve joints:
①参见中国专利号为ZL200410084686.7的“一种新颖的波纹管的连接结构”，该连接结构包括两个衬片和一个螺帽，衬片的内侧具有与波纹管外表面相匹配的形状，螺帽套在波纹管上，螺帽通过螺纹与接管相连接，螺帽的帽沿挡于上述衬片的端部。 ①Refer to "A Novel Connection Structure of Bellows" with Chinese Patent No. ZL200410084686.7. The connection structure includes two linings and a nut. The inner side of the lining has a shape that matches the outer surface of the bellows. The cap is sheathed on the corrugated pipe, the nut is connected with the connecting pipe through threads, and the brim of the nut blocks the end of the above-mentioned lining.
上述波纹管的连接结构是利用衬片扣压于波纹管上，使波纹管不会脱出；然后利用螺帽挡住衬片，在螺帽与接管相连接后就使波纹管与接管固定连接。在接管与波纹管之间所设置的密封圈可起到密封的作用，以防止连接处出现泄漏现象。 The connection structure of the above-mentioned bellows is to use the lining to buckle on the bellows so that the bellows will not come out; then use the nut to block the lining, and after the nut is connected to the connecting pipe, the bellows and the connecting pipe are fixedly connected. The sealing ring arranged between the connecting pipe and the bellows can play a sealing role to prevent leakage at the joint.
但是，波纹管的外侧通常还套有塑料保护套，在装配时需要将波纹管端部处的塑料保护套剥落，因此，在实际装配过程中显得甚为不便。同时，剥落一部分保护套后，波纹管的金属部分可能暴露在外，影响美观，这样也会使得金属部分受外界介质作用而对其腐蚀。另外，在拆卸时即螺帽退出时，会受到塑料保护套的阻挡，拆卸也较困难。 However, the outer side of the bellows is usually covered with a plastic protective cover, and the plastic protective cover at the end of the bellows needs to be peeled off during assembly, so it is very inconvenient in the actual assembly process. At the same time, after a part of the protective cover is peeled off, the metal part of the bellows may be exposed, affecting the appearance, and this will also cause the metal part to be corroded by the external medium. In addition, when disassembling, that is, when the nut is withdrawn, it will be blocked by the plastic protective cover, and dismounting is also relatively difficult.
②由于安装时波纹管的限位装置存在提供锁紧力不可靠的情况，操作人员在锁紧时如果 施力过度，可能损坏利用与波纹管单个波峰形配合的限位装置，造成限位机构折断或者波纹管单个波峰严重变形，导致无法提供足够的锁紧力而引发泄漏。为了修复损坏的部分需切除相关波纹管波峰，由此影响安装效果和效率。同时由于波纹管生产时密封端面可能存在尖锐毛刺或快口情况，当对其施加过度螺旋压力或者进行多次压紧时容易造成波纹管端面切入密封件，造成密封件损坏并影响波纹管的密封效果。 ②Due to the unreliable locking force provided by the limit device of the bellows during installation, if the operator applies excessive force when locking, it may damage the limit device that cooperates with the single wave crest of the bellows, causing the limit mechanism to fail. Breakage or severe deformation of a single crest of the bellows, resulting in failure to provide sufficient locking force and causing leakage. In order to repair the damaged part, it is necessary to cut off the peak of the corrugated pipe, which affects the installation effect and efficiency. At the same time, because there may be sharp burrs or fast openings on the sealing end surface of the bellows during production, it is easy to cause the end surface of the bellows to cut into the seal when excessive screw pressure is applied to it or repeated compression, causing damage to the seal and affecting the sealing of the bellows Effect.
进一步，由于安装时波纹管和螺母存在单向装配性，安装的时候不容易对波纹管的位置进行定位，给操作人员造成较大的定位压力。同时如果出现定位失误，需切除多余部分，由此影响安装效果和效率。 Furthermore, due to the one-way assembly of the bellows and the nut during installation, it is not easy to locate the position of the bellows during installation, which causes a large positioning pressure on the operator. At the same time, if there is a positioning error, the excess part needs to be cut off, which will affect the installation effect and efficiency.
由于现有技术中存在上述的缺陷，市场急需一种提高操作者的安装效率、可靠提供锁紧力、可以达到波纹管与接管自定位并降低对密封件的损坏造成的密封泄漏情况发生、并且更安全、有效且不损坏波纹管外侧塑料保护套的机械压紧套筒。 Due to the above-mentioned defects in the prior art, the market urgently needs a method that improves the installation efficiency of the operator, reliably provides the locking force, can achieve the self-positioning of the bellows and the connecting pipe, and reduces the occurrence of seal leakage caused by damage to the seal, and A mechanical compression sleeve that is safer, more effective and does not damage the plastic protective sleeve outside the bellows.
发明内容 Contents of the invention
本实用新型的目的是提供一种波纹管自密封可靠机械式压紧套筒，它能克服现有波纹管接头的上述缺点，同时具有装卸方便、外形美观、密封可靠和成本低等特点。 The purpose of this utility model is to provide a bellows self-sealing and reliable mechanical compression sleeve, which can overcome the above-mentioned shortcomings of the existing bellows joints, and has the characteristics of convenient assembly and disassembly, beautiful appearance, reliable sealing and low cost.
为实现上述特点，本实用新型提供了一种波纹管自密封可靠机械式压紧套筒，其位于硬质管道和带塑料护套的波纹管之间，其包含螺母、算珠形卡套、密封套和接头，所述接头呈管状且具有两个端口，在所述接头的两个端口附近的外壁上设置有相反方向旋转的螺纹；所述密封套呈套筒状，所述密封套的内径尺寸与所述波纹管波谷的直径相匹配，所述密封套的外径尺寸与所述螺母的内径匹配；所述算珠形卡套的横截面呈C形，在所述算珠形卡套的侧壁上开设有贯穿头尾的纵向开口间隙，所述算珠形卡套外壁呈向外的弧形隆起，且算珠形卡套侧壁的截面呈D形，所述算珠形卡套的内壁设置有连续的U形的凹槽，所述算珠形卡套的内径尺寸与所述波纹管的波谷的直径相匹配，所述算珠形卡套的外径尺寸与所述螺母的内径相匹配；所述螺母一端为螺纹端，另一端为限位处，且所述限位处设置有与所述算珠形卡套的弧形隆起相配合的弧形的向内凹陷。 In order to achieve the above features, the utility model provides a bellows self-sealing and reliable mechanical compression sleeve, which is located between the hard pipe and the bellows with plastic sheath, which includes nuts, bead-shaped ferrules, A sealing sleeve and a joint, the joint is tubular and has two ports, and the outer wall near the two ports of the joint is provided with threads that rotate in opposite directions; the sealing sleeve is in the shape of a sleeve, and the sealing sleeve The inner diameter size matches the diameter of the trough of the bellows, the outer diameter size of the sealing sleeve matches the inner diameter of the nut; the cross section of the bead-shaped ferrule is C-shaped, and the bead-shaped ferrule The side wall of the sleeve is provided with a longitudinal opening gap that runs through the head and tail. The outer wall of the bead-shaped ferrule is curved outward, and the cross-section of the side wall of the bead-shaped ferrule is D-shaped. The bead-shaped The inner wall of the ferrule is provided with a continuous U-shaped groove, the inner diameter of the bead-shaped ferrule matches the diameter of the trough of the bellows, and the outer diameter of the bead-shaped ferrule matches the diameter of the bead-shaped ferrule. The inner diameters of the nuts match; one end of the nut is a threaded end, and the other end is a limit position, and the limit position is provided with an arc-shaped inward depression that matches the arc-shaped bulge of the bead-shaped ferrule .
所述接头的两个端口中的一个连接所述波纹管，另一个连接所述硬质管道；连接所述波纹管的端口具有用于插入所述波纹管的端面的环形挡肩和用于对接密封套的端面的接头凹面，且所述密封套在所述算珠形卡套和所述接头凹面的作用下发生变形，所述环形挡肩的外径与所述波纹管的内径尺寸匹配。 One of the two ports of the joint is connected to the corrugated pipe, and the other is connected to the hard pipe; the port connected to the corrugated pipe has an annular shoulder for inserting into the end face of the corrugated pipe and for butt joint The joint concave surface of the end surface of the sealing sleeve, and the sealing sleeve is deformed under the action of the bead-shaped ferrule and the joint concave surface, and the outer diameter of the annular shoulder matches the inner diameter of the bellows.
所述密封套的轴向长度相当于所述波纹管的3个以上的波纹的波谷最低点之间的距离，所述密封套的内表面与所述波纹管的波纹形状相匹配。 The axial length of the sealing sleeve is equivalent to the distance between the lowest points of the troughs of more than three corrugations of the bellows, and the inner surface of the sealing sleeve matches the corrugation shape of the bellows.
所述算珠形卡套的轴向长度相当于所述波纹管的3个以上的波纹的波谷最低点之间的距离；所述凹槽的形状与所述波纹管外壁波纹的形状相匹配。 The axial length of the bead-shaped ferrule is equivalent to the distance between the lowest points of the troughs of more than three corrugations of the bellows; the shape of the groove matches the shape of the corrugations on the outer wall of the bellows.
所述螺母为外六角螺母，限位处的内径尺寸与所述波纹管的塑料护套的外径尺寸相匹配，所述限位处向内收缩且内径尺寸小于所述算珠形卡套的外径尺寸。 The nut is an external hexagon nut, the inner diameter of the limit position matches the outer diameter of the plastic sheath of the bellows, the limit shrinks inward and the inner diameter is smaller than that of the bead-shaped ferrule. Diameter size.
去除部分塑料护套的所述波纹管从所述螺母的限位处插入，将所述算珠形卡套按照所述波纹管外壁波纹的形状旋转设置在所述波纹管上，由于在所述算珠形卡套的侧壁上开设有贯穿头尾的纵向开口间隙，所以所述算珠形卡套可以轻松的设置在所述波纹管的外壁上，使所述算珠形卡套的边缘距离所述波纹管端面3个波峰以上的位置，所述算珠形卡套抵靠在所述螺母的限位处的向内凹陷上，达到固定波纹管的效果，所述卡套连续的U形的凹槽卡设在所述波纹管外壁的波纹上，以达到提供可靠锁紧力的效果；同时，所述算珠形卡套的弧形隆起抵靠在所述螺母的限位处的弧形的向内凹陷上，且由于所述算珠形卡套处于可发生径向位移和产生旋转的自由状态，使得所述算珠形卡套达到自定位的目的形成简易装配的效果，所述环形挡肩插入所述波纹管的端面，所述密封套按照所述波纹管外壁波纹的形状旋转设置在所述波纹管上，且所述密封套的一端与所述算珠形卡套的侧壁相抵靠、另一端与所述波纹管的端面相齐平，所述螺母的螺纹端通过螺纹与所述接头用于连接波纹管的端口外壁上的螺纹相连接，在所述螺母旋转的锁紧力的带动下，在所述算珠形卡套和所述接头凹面的挤压下所述密封套发生变形产生自密封面，所述自密封面贴紧波纹管的端面和所述接头凹面，达到密封效果。 The bellows with part of the plastic sheath removed is inserted from the limit position of the nut, and the bead-shaped ferrule is rotated on the bellows according to the corrugated shape of the outer wall of the bellows. The side wall of the bead-shaped ferrule is provided with a longitudinal opening gap through the head and tail, so the bead-shaped ferrule can be easily arranged on the outer wall of the bellows, so that the edge of the bead-shaped ferrule At a position more than 3 peaks away from the end face of the bellows, the bead-shaped ferrule abuts against the inward depression of the limit position of the nut to achieve the effect of fixing the bellows. The continuous U of the ferrule The shaped groove is clamped on the corrugation of the outer wall of the bellows to achieve the effect of providing a reliable locking force; at the same time, the arc-shaped bulge of the bead-shaped ferrule abuts against the limit position of the nut The arc-shaped inward depression, and because the bead-shaped ferrule is in a free state where radial displacement and rotation can occur, the bead-shaped ferrule achieves the purpose of self-positioning and forms the effect of easy assembly. The annular retaining shoulder is inserted into the end face of the bellows, the sealing sleeve is rotated and arranged on the bellows according to the corrugated shape of the outer wall of the bellows, and one end of the sealing sleeve is connected to the bead-shaped ferrule. The side walls are against each other, and the other end is flush with the end face of the bellows. The threaded end of the nut is connected with the thread on the outer wall of the port of the joint for connecting the bellows through threads. When the nut rotates, Driven by the locking force, the sealing sleeve is deformed under the extrusion of the bead-shaped ferrule and the concave surface of the joint to form a self-sealing surface, and the self-sealing surface is in close contact with the end surface of the bellows and the joint Concave, to achieve the sealing effect.
本实用新型的有益效果是：它能克服现有波纹管接头的缺点，同时具有装卸方便、可靠提供锁紧力、可以达到波纹管与接管自定位、外形美观、密封可靠、密封寿命长和成本低等特点。它去除了不锈钢波纹管切割后保持平滑、无毛刺的技术要求，又去除了使用多种工具的繁琐。保证施工质量的安全技术要求，又保证了易行可靠，降低成本、节约工时。 The beneficial effects of the utility model are: it can overcome the shortcomings of the existing corrugated pipe joints, and at the same time, it has the advantages of convenient loading and unloading, reliable locking force, self-positioning of the corrugated pipe and the connecting pipe, beautiful appearance, reliable sealing, long sealing life and low cost. low-level features. It removes the technical requirement of keeping the stainless steel bellows smooth and burr-free after cutting, and removes the tedious use of multiple tools. Ensure the safety technical requirements of the construction quality, and ensure the ease and reliability, reduce costs and save working hours.
本实用新型与现有的技术相比，本波纹管自密封式机械压紧套筒由于卡套与螺母的限位处相接触，达到波纹管与接管形成可靠的锁紧定位并提供可靠的锁紧力的效果；进一步由于算珠形卡套与螺母的限位处相接触，达到波纹管与接管自定位的目的形成简易装配的效果，同时由于波纹管与螺母的限位处之间的空隙较大，在连接波纹管过程中不需要将波纹管外侧的塑料保护套剥落很长。因此，它装配比较方便。 Compared with the existing technology, the utility model has the bellows self-sealing mechanical compression sleeve, because the ferrule and the limit position of the nut are in contact, so that the bellows and the connecting pipe form a reliable locking position and provide a reliable lock. The effect of tightening force; further, due to the contact between the bead-shaped ferrule and the limit position of the nut, the self-positioning of the bellows and the connecting pipe is achieved, and the effect of simple assembly is formed. At the same time, due to the gap between the limit position of the bellows and the nut Larger, it is not necessary to peel off the plastic protective sleeve outside the bellows for a long time during the process of connecting the bellows. Therefore, it is more convenient to assemble.
同时，拆卸时螺母退出过程中不受阻挡，因此，拆卸也较方便。另外，波纹管的端面通过密封胶与接头的接头凹面连接形成密封，结构简单，具有较高的实用性。 At the same time, the nut is not blocked during the withdrawal process during disassembly, so the disassembly is also more convenient. In addition, the end surface of the corrugated pipe is connected with the concave surface of the joint through the sealant to form a seal, which has a simple structure and high practicability.
附图说明 Description of drawings
附图1为本实用新型的结构示意图； Accompanying drawing 1 is the structural representation of the utility model;
附图2为本实用新型的A-A剖视图； Accompanying drawing 2 is A-A sectional view of the utility model;
附图3为本实用新型的零件图。 Accompanying drawing 3 is the part figure of the utility model.
附图标记：1.螺母，1-1.限位处，1-2.螺纹端，1-3.向内凹陷，2.算珠形卡套，2-1.纵向开口间隙，3.密封套，4.接头，5.波纹管，6.螺纹，7.凹槽，8.环形挡肩，9.接头凹面 Reference signs: 1. Nut, 1-1. Limit position, 1-2. Threaded end, 1-3. Inward depression, 2. Bead-shaped ferrule, 2-1. Longitudinal opening gap, 3. Seal Sleeve, 4. Joint, 5. Bellows, 6. Thread, 7. Groove, 8. Ring shoulder, 9. Joint concave
具体实施方式 Detailed ways
现在参照附图1-3对本发明的实施例进行详细说明： Embodiments of the present invention are described in detail with reference to accompanying drawing 1-3 now:
一种波纹管自密封可靠机械式压紧套筒，其位于硬质管道和带塑料护套的波纹管5之间，其包含螺母1、算珠形卡套2、密封套3和接头4，所述接头4呈管状且具有两个端口，在所述接头4的两个端口附近的外壁上设置有相反方向旋转的螺纹6；所述密封套呈套筒状，所述密封套3的内径尺寸与所述波纹管5波谷的直径相匹配，所述密封套3的外径尺寸与所述螺母1的内径匹配；所述算珠形卡套2的横截面呈C形，在所述算珠形卡套2的侧壁上开设有贯穿头尾的纵向开口间隙2-1，所述算珠形卡套2外壁呈向外的弧形隆起，且算珠形卡套2侧壁的截面呈D形，所述算珠形卡套2的内壁设置有连续的U形的凹槽7，所述算珠形卡套2的内径尺寸与所述波纹管5的波谷的直径相匹配，所述算珠形卡套2的外径尺寸与所述螺母1的内径相匹配；所述螺母1一端为螺纹端1-2，另一端为限位处1-1，且所述限位处1-1设置有与所述算珠形卡套2的弧形隆起相配合的弧形的向内凹陷1-3。 A bellows self-sealing and reliable mechanical compression sleeve, which is located between a hard pipe and a bellows 5 with a plastic sheath, and includes a nut 1, a bead-shaped ferrule 2, a sealing sleeve 3 and a joint 4, The joint 4 is tubular and has two ports, and the outer wall near the two ports of the joint 4 is provided with threads 6 that rotate in opposite directions; the sealing sleeve is sleeve-shaped, and the inner diameter of the sealing sleeve 3 is The size matches the diameter of the trough of the bellows 5, and the outer diameter of the sealing sleeve 3 matches the inner diameter of the nut 1; the cross-section of the bead-shaped ferrule 2 is C-shaped, and the The side wall of the bead-shaped ferrule 2 is provided with a longitudinal opening gap 2-1 that runs through the head and tail. D-shaped, the inner wall of the bead-shaped ferrule 2 is provided with a continuous U-shaped groove 7, the inner diameter of the bead-shaped ferrule 2 matches the diameter of the trough of the bellows 5, so The outer diameter of the bead-shaped ferrule 2 matches the inner diameter of the nut 1; one end of the nut 1 is a threaded end 1-2, the other end is a limit position 1-1, and the limit position 1 -1 is provided with an arc-shaped inward depression 1-3 matching the arc-shaped bulge of the bead-shaped ferrule 2 .
所述接头4的两个端口中的一个连接所述波纹管5，另一个连接所述硬质管道；连接所述波纹管5的端口具有用于插入所述波纹管5的端面的环形挡肩8和用于对接密封套3的端面的接头凹面9，且所述密封套3在所述算珠形卡套2和所述接头凹面9的作用下发生变形，所述环形挡肩8的外径与所述波纹管5的内径尺寸匹配。 One of the two ports of the joint 4 is connected to the bellows 5, and the other is connected to the hard pipe; the port connected to the bellows 5 has an annular shoulder for inserting the end face of the bellows 5 8 and the joint concave surface 9 used to butt the end face of the sealing sleeve 3, and the sealing sleeve 3 is deformed under the action of the bead-shaped ferrule 2 and the joint concave surface 9, and the outer surface of the annular shoulder 8 The diameter matches the inner diameter of the bellows 5.
所述密封套3的轴向长度相当于所述波纹管5的3个以上的波纹的波谷最低点之间的距离，所述密封套3的内表面与所述波纹管5的波纹形状相匹配。 The axial length of the sealing sleeve 3 is equivalent to the distance between the lowest points of the troughs of more than three corrugations of the bellows 5, and the inner surface of the sealing sleeve 3 matches the corrugated shape of the bellows 5 .
所述算珠形卡套2的轴向长度相当于所述波纹管5的3个以上的波纹的波谷最低点之间的距离；所述凹槽7的形状与所述波纹管5外壁波纹的形状相匹配。 The axial length of the bead-shaped ferrule 2 is equivalent to the distance between the lowest points of the troughs of more than three corrugations of the bellows 5; The shape matches.
所述螺母1为外六角螺母，所述限位处1-1的内径尺寸与所述波纹管5的塑料护套的外径尺寸相匹配，所述限位处1-1向内收缩且内径尺寸小于所述算珠形卡套2的外径尺寸。 The nut 1 is an external hexagon nut, the inner diameter of the limit position 1-1 matches the outer diameter of the plastic sheath of the bellows 5, the limit position 1-1 shrinks inward and the inner diameter The size is smaller than the outer diameter of the bead-shaped ferrule 2 .
去除部分塑料护套的所述波纹管5从所述螺母1的限位处1-1插入，将所述算珠形卡套2按照所述波纹管5外壁波纹的形状旋转设置在所述波纹管5上，由于在所述算珠形卡套2的侧壁上开设有贯穿头尾的纵向开口间隙2-1，所以所述算珠形卡套2可以轻松的设置在所述 波纹管5的外壁上，使所述算珠形卡套2的边缘距离所述波纹管5端面3个波峰以上的位置，所述算珠形卡套2抵靠在所述螺母1的限位处1-1的向内凹陷1-3上，达到固定所述波纹管5的效果，所述算珠形卡套2连续的U形的7卡设在所述波纹管5外壁的波纹上，以达到提供可靠锁紧力的效果；同时，所述算珠形卡套2的弧形隆起抵靠在所述螺母1的限位处1-1的弧形的向内凹陷1-3上，且由于所述算珠形卡套2处于可发生径向位移和产生旋转的自由状态，使得所述算珠形卡套2达到自定位的目的形成简易装配的效果，所述环形挡肩8插入所述波纹管5的端面，所述密封套3按照所述波纹管5外壁波纹的形状旋转设置在所述波纹管5上，且所述密封套3的一端与所述算珠形卡套2的侧壁相抵靠、另一端与所述波纹管5的端面相齐平，所述螺母1的螺纹端通过螺纹与所述接头4用于连接波纹管5的端口外壁上的螺纹6相连接，在所述螺母1旋转的锁紧力的带动下，在所述算珠形卡套2和所述接头凹面9的挤压下所述密封套3发生变形产生自密封面，所述自密封面贴紧波纹管5的端面和所述接头凹面8，达到密封效果。 The corrugated tube 5 with part of the plastic sheath removed is inserted from the limit position 1-1 of the nut 1, and the bead-shaped ferrule 2 is rotated and arranged on the corrugated tube 5 according to the shape of the corrugated outer wall of the corrugated tube On the tube 5, since the side wall of the bead-shaped ferrule 2 is provided with a longitudinal opening gap 2-1 that runs through the head and the tail, the bead-shaped ferrule 2 can be easily arranged on the bellows 5 On the outer wall of the bead-shaped ferrule 2, the edge of the bead-shaped ferrule 2 is more than 3 crests away from the end face of the bellows 5, and the bead-shaped ferrule 2 is against the limit position of the nut 1 1- The inward depression 1-3 of 1 achieves the effect of fixing the bellows 5, and the continuous U-shaped 7 of the bead-shaped ferrule 2 is clamped on the corrugation of the outer wall of the bellows 5 to provide The effect of reliable locking force; at the same time, the arc-shaped bulge of the bead-shaped ferrule 2 abuts against the arc-shaped inward depression 1-3 of the limit position 1-1 of the nut 1, and due to the The bead-shaped ferrule 2 is in a free state where radial displacement and rotation can occur, so that the bead-shaped ferrule 2 achieves the purpose of self-positioning to form the effect of easy assembly, and the annular shoulder 8 is inserted into the corrugated The end face of the pipe 5, the sealing sleeve 3 is rotated and arranged on the bellows 5 according to the corrugated shape of the outer wall of the bellows 5, and one end of the sealing sleeve 3 is connected to the side wall of the bead-shaped ferrule 2 The other end is flush with the end face of the bellows 5, and the threaded end of the nut 1 is connected with the thread 6 on the outer wall of the port of the joint 4 for connecting the bellows 5 through threads. Driven by the locking force of the rotation of the nut 1, the sealing sleeve 3 is deformed under the extrusion of the bead-shaped ferrule 2 and the concave surface 9 of the joint to form a self-sealing surface, and the self-sealing surface is close to the corrugated surface. The end surface of the pipe 5 and the concave surface 8 of the joint achieve a sealing effect.
它能克服现有波纹管接头的缺点，同时具有装卸方便、可靠提供锁紧力、可以达到波纹管与接管自定位、外形美观、密封可靠、密封寿命长和成本低等特点。它去除了不锈钢波纹管切割后保持平滑、无毛刺的技术要求，又去除了使用多种工具的繁琐。保证施工质量的安全技术要求，又保证了易行可靠，降低成本、节约工时。 It can overcome the shortcomings of the existing corrugated pipe joints, and at the same time has the characteristics of convenient loading and unloading, reliable locking force, self-positioning of corrugated pipes and connecting pipes, beautiful appearance, reliable sealing, long sealing life and low cost. It removes the technical requirement of keeping the stainless steel bellows smooth and burr-free after cutting, and removes the tedious use of multiple tools. Ensure the safety technical requirements of the construction quality, and ensure the ease and reliability, reduce costs and save working hours.
本实用新型与现有的技术相比，本波纹管自密封式机械压紧套筒由于卡套与螺母的限位处相接触，达到波纹管与接管形成可靠的锁紧定位并提供可靠的锁紧力的效果；进一步由于算珠形卡套与螺母的限位处相接触，达到波纹管与接管自定位的目的形成简易装配的效果，同时由于波纹管与螺母的限位处之间的空隙较大，在连接波纹管过程中不需要将波纹管外侧的塑料保护套剥落很长。因此，它装配比较方便。 Compared with the existing technology, the utility model has the bellows self-sealing mechanical compression sleeve, because the ferrule and the limit position of the nut are in contact, so that the bellows and the connecting pipe form a reliable locking position and provide a reliable lock. The effect of tightening force; further, due to the contact between the bead-shaped ferrule and the limit position of the nut, the self-positioning of the bellows and the connecting pipe is achieved, and the effect of simple assembly is formed. At the same time, due to the gap between the limit position of the bellows and the nut Larger, it is not necessary to peel off the plastic protective sleeve outside the bellows for a long time during the process of connecting the bellows. Therefore, it is easier to assemble.
同时，拆卸时螺母退出过程中不受阻挡，因此，拆卸也较方便。另外，波纹管的端面通过密封胶与接头的接头凹面连接形成密封，结构简单，具有较高的实用性。 At the same time, the nut is not blocked during the withdrawal process during disassembly, so the disassembly is also more convenient. In addition, the end surface of the corrugated pipe is connected with the concave surface of the joint through the sealant to form a seal, which has a simple structure and high practicability.
尽管上述通过举例说明，已经描述了本发明最佳的具体实施方式，本发明的保护范围并不仅限于上述说明，本领域一般技术人员可以理解的是，在不背离本发明所教导的实质和精髓的前提下，任何修改和变化都落入本发明的保护范围。 Although the above has described the best specific implementation of the present invention by way of example, the protection scope of the present invention is not limited to the above description, and those skilled in the art can understand that without departing from the essence and essence taught by the present invention Under the premise, any modifications and changes fall within the protection scope of the present invention.
Claims (7)
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| CN107061885A (en) * | 2017-06-21 | 2017-08-18 | 海盐县秦山液压机械厂 | A kind of high leakproofness ferrule-type compression joint |
| CN108302266A (en) * | 2018-03-27 | 2018-07-20 | 日丰企业（佛山）有限公司 | Corrugated flexible hose connector and corrugated flexible hose component |
| CN109611626A (en) * | 2018-12-12 | 2019-04-12 | 成都共同管业集团股份有限公司 | Corrugated pipe ring presses connection component, structure and ring to press method |
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| CN107061885A (en) * | 2017-06-21 | 2017-08-18 | 海盐县秦山液压机械厂 | A kind of high leakproofness ferrule-type compression joint |
| CN108302266A (en) * | 2018-03-27 | 2018-07-20 | 日丰企业（佛山）有限公司 | Corrugated flexible hose connector and corrugated flexible hose component |
| CN109611626A (en) * | 2018-12-12 | 2019-04-12 | 成都共同管业集团股份有限公司 | Corrugated pipe ring presses connection component, structure and ring to press method |
| CN110185865A (en) * | 2019-06-24 | 2019-08-30 | 湖南格仑新材股份有限公司 | A kind of tube for fluid transfer road connection system |
| CN110274107A (en) * | 2019-06-24 | 2019-09-24 | 湖南格仑新材股份有限公司 | A kind of bellows screwed connection method and device |
| CN110332389A (en) * | 2019-07-03 | 2019-10-15 | 南通云创流体控制科技有限公司 | Spiral bellows joint and assembly method thereof |
| CN112856065A (en) * | 2019-11-28 | 2021-05-28 | 广东鸿业机械有限公司 | Novel coupling assembling of delivery pipe |
| CN111750188A (en) * | 2020-06-18 | 2020-10-09 | 江苏沃凯氟密封科技有限公司 | A quick-connect super-long PTFE bellows |
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