Quick-release flange

Abstract

The utility model discloses a quick detachable flange, including first flange, second flange, quick detachable locking mechanism, first flange and second flange are oppositely arranged, and quick detachable locking mechanism includes at least two hinged seats, and is fixedly arranged on the circumference outside of first flange, the locking arm equal in number with hinged seat, and the middle part of each locking arm is hinged with corresponding hinged seat through a rotating shaft, and one end of locking arm is locking end, and the other end is drive end, drive ring is rotatably sleeved on the outer periphery of first flange, and the side of drive ring facing hinged seat is equipped with annular groove, and the outer side wall surface on the inside of annular groove is equipped with first arc-shaped lug, and the inner side wall surface on the inside of annular groove is equipped with second arc-shaped lug, and first arc-shaped lug and second arc-shaped lug are staggered arrangement, and the circumference outside of second flange is equipped with a ring of locking flange that is adapted with locking end. By screwing drive ring, can make locking end rotate downward or upward, to realize the quick installation or quick detach of first flange and second flange.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically a quick-release flange. Background Technology

[0002] Flanges are commonly used connecting components in pipes, containers, valves, and other equipment. Traditional flange connections typically use a pair of flanges and a set of bolts and nuts. During installation, the two flanges need to be aligned, then multiple bolts are inserted sequentially, and the nuts are tightened one by one using tools. Disassembly requires the reverse process, loosening and removing the bolts one by one. While this connection method is reliable, it is inefficient in situations requiring frequent disassembly and installation (such as equipment cleaning, maintenance, and process changes), due to its cumbersome operation, time-consuming nature, and high labor intensity. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a structurally improved quick-release flange that enables rapid assembly and disassembly while ensuring good sealing performance.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A quick-release flange includes a first flange and a second flange, wherein the first flange and the second flange are made of austenitic stainless steel. The first flange and the second flange are arranged opposite to each other, and the first flange also includes a quick-release locking mechanism. The quick-release locking mechanism includes: at least two hinge seats, which are circumferentially and evenly fixed on the outer circumference of the first flange; a number of locking arms equal to the number of hinge seats, each locking arm being hinged to the corresponding hinge seat at its middle via a pivot shaft, one end of the locking arm being an L-shaped locking end and the other end being a driving end; a driving ring, which is rotatably fitted onto the outer circumference of the first flange via a bearing, the driving ring having an annular groove on the side facing the hinge seat, the outer wall of the annular groove having a first arc-shaped protrusion equal to the number of locking arms, and the inner wall of the annular groove having a second arc-shaped protrusion equal to the number of locking arms, the first arc-shaped protrusion and the second arc-shaped protrusion being staggered, and the driving ring being fastened to the first flange by a limiting mechanism; and a locking flange that matches the locking end is provided on the outer circumference of the second flange.

[0005] Preferably, the outer circumferential surface of the drive ring is provided with anti-slip texture to facilitate manual rotation operation.

[0006] Preferably, the mating surface of the first flange facing the second flange is provided with at least two sealing protrusions, and the mating surface of the second flange facing the first flange is provided with sealing grooves that match the sealing protrusions. The sealing grooves have a trapezoidal cross-section, and the outer wall of the sealing protrusions is fitted with an elastic sealing strip that matches the sealing groove. The sealing strip also has a trapezoidal cross-section. By setting multiple sets of sealing protrusions and sealing grooves, multiple seals can be achieved. Moreover, the sealing strip is embedded around the sealing protrusions, and since both the sealing strip and the sealing groove have trapezoidal cross-sections and the sealing strip is elastic, when the sealing strip is inserted into the sealing groove, the sealing groove squeezes the sealing strip. When the sealing strip is fully inserted into the sealing groove, the sealing strip adheres tightly to the sealing groove due to the restoring force, thereby achieving a sealing effect.

[0007] Preferably, the limiting mechanism includes a sleeve and a fastening bolt. The sleeve is fixed to the end of the drive ring away from the hinge seat. At least two threaded holes are provided on the sleeve, and fastening bolts are threaded into these holes. By tightening the fastening bolts, the end face of the bolt is pressed tightly against the first flange, thus locking the drive ring. When the arc-shaped protrusion leaves the locking arm, the locking end is engaged with one side of the locking flange. At this time, tightening the fastening bolts presses its inner end tightly against the first flange, thereby stabilizing the drive ring and preventing it from rotating due to accidental contact.

[0008] Compared with the prior art, the present invention has the following beneficial effects: By turning the drive ring, the drive ring, through the cooperation of the first arc-shaped protrusion, the second arc-shaped protrusion and the drive end of the locking arm, can drive the drive end to rotate up or down, thereby causing the locking end to rotate down or up, so as to realize the quick installation or quick removal of the first flange and the second flange. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 The right view; Figure 4 for Figure 2 A split diagram; Figure 5 This is a schematic diagram showing the locking end of the locking arm separating from the locking flange. Figure 6 This is a schematic diagram showing the locking end of the locking arm engaged with the locking flange. In the diagram: 1-First flange, 101-Sealing ring, 102-Sealing strip, 2-Second flange, 201-Locking flange, 202-Sealing groove, 3-Locking mechanism, 301-Hinge seat, 302-Locking arm, 303-Locking end, 304-Drive ring, 305-Bearing, 306-Annular groove, 307-Arc-shaped protrusion, 308-Sleeve, 309-Fasting bolt, 310-Second arc-shaped protrusion. Detailed Implementation

[0010] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] Please see Figure 1-6 A quick-release flange includes a first flange 1 and a second flange 2, which are arranged opposite to each other. Both the first flange 1 and the second flange 2 are made of austenitic stainless steel. The opposite ends of the first flange 1 and the second flange 2 are respectively fixedly connected to two pipe sections that need to be connected. Specifically, the first flange and the second flange can be welded to the corresponding pipes, or they can be integrally formed with the pipes during manufacturing. This utility model will not be described in detail further.

[0012] The first flange 1 has at least two sealing protrusions 101 on its mating surface facing the second flange. The second flange 2 has a sealing groove 202 matching the sealing protrusions on its mating surface facing the first flange. The sealing groove 202 has a trapezoidal cross-section. An elastic sealing strip 102 matching the sealing groove is fitted onto the outer wall of the sealing protrusions 101. The sealing strip 102 also has a trapezoidal cross-section. During installation, the first flange 1 and the second flange 2 are aligned and mated, and the sealing strip 102 is pressed into the sealing groove 202. The sealing strip 102 is embedded around the sealing protrusions 101. Since both the sealing strip 102 and the sealing groove 202 have trapezoidal cross-sections and are elastic, when the sealing strip 102 is inserted into the sealing groove 202, the sealing groove 202 compresses the sealing strip 102. When the sealing strip 102 is fully inserted into the sealing groove 202, the sealing strip 102 adheres tightly to the sealing groove 202 due to its restoring force, thereby achieving a sealing effect. Furthermore, multiple sealing rings 101 and sealing grooves 202 can be set to achieve multiple seals.

[0013] This quick-release flange also includes a quick-release locking mechanism 3, which includes at least two hinge seats 301, which are circumferentially and evenly fixed on the outer circumference of the first flange 1; a number of locking arms 302 equal to the number of hinge seats 301, each locking arm 302 being hinged to the corresponding hinge seat 301 at its middle via a pivot shaft to form a lever structure, one end of the locking arm 302 being an L-shaped locking end 303 and the other end being a driving end; and a driving ring 304, which is rotatably fitted onto the outer circumference of the first flange 1 via a bearing 305. The outer circumferential surface of the drive ring 304 is provided with anti-slip texture to facilitate manual rotation operation; the side of the drive ring 304 facing the hinge seat is provided with an annular groove 306, the outer wall of the inner side of the annular groove 306 is provided with a first arc-shaped protrusion 307 equal in number to the locking arm 302, the inner wall of the inner side of the annular groove 306 is provided with a second arc-shaped protrusion 310 equal in number to the locking arm 302, the first arc-shaped protrusion 307 and the second arc-shaped protrusion 310 are staggered, and the drive ring 304 is fastened to the first flange 1 by a limiting mechanism.

[0014] The second flange 2 has a locking flange 201 around its outer circumference that is adapted to the locking end 303. The first flange and the second flange are fixed by the locking end 303 being tightly attached to the locking flange 201.

[0015] The limiting mechanism includes a sleeve 308 and a fastening bolt 309. The sleeve 308 is fixed to the end of the drive ring 304 away from the hinge seat. The sleeve 308 has at least two threaded holes, and the fastening bolt 309 is threaded into the threaded holes. By tightening the fastening bolt 309, its end face is pressed tightly against the first flange 1, thereby locking the drive ring 304. When the first arc-shaped protrusion 307 moves away from the locking arm 302 and the second arc-shaped protrusion 310 contacts the locking arm 302, the locking end 303 is engaged on one side of the locking flange 201. At this time, tightening the fastening bolt 309 presses its inner end tightly against the first flange 1, thereby stabilizing the drive ring 304 and preventing it from rotating due to accidental contact.

[0016] The working principle of this utility model is as follows: During installation, align the first flange 1 with the second flange 2, insert the sealing ring 101 and sealing strip 102 into the corresponding sealing grooves 202, and then screw on the drive ring 304. When the second arc-shaped protrusion 310 pushes the drive ends of all locking arms 302 upwards, the locking end 303 rotates downwards and locks onto the locking flange 201. The more locking arms 302 there are, the more stable the connection between the first flange 1 and the second flange 2.

[0017] During disassembly, rotate the drive ring 304 in the reverse or continue to rotate it so that the second arc-shaped protrusion 310 leaves the locking arm 302. Then, the first arc-shaped protrusion 307 pushes the drive end of the locking arm 302 downward so that the locking end 303 opens outward and separates from the locking flange 201, thus easily separating the two flanges.

[0018] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release flange, comprising a first flange (1) and a second flange (2), wherein the first flange (1) and the second flange (2) are disposed opposite to each other, characterized in that, It also includes a quick-release locking mechanism (3), which includes: At least two hinge seats (301) are circumferentially and uniformly fixed on the outer side of the first flange (1); The locking arms (302) are equal in number to the hinge seats (301). The middle part of each locking arm (302) is hinged to the corresponding hinge seat (301) through a rotating shaft. One end of the locking arm (302) is an L-shaped locking end (303), and the other end is a driving end. A drive ring (304) is rotatably fitted on the outer periphery of the first flange (1) via a bearing (305). The drive ring (304) has an annular groove (306) on the side facing the hinge seat. The outer wall of the annular groove (306) has a first arc-shaped protrusion (307) equal in number to the locking arms (302). The inner wall of the annular groove (306) has a second arc-shaped protrusion (310) equal in number to the locking arms (302). The first arc-shaped protrusion (307) and the second arc-shaped protrusion (310) are staggered. The drive ring (304) is fastened to the first flange (1) by a limiting mechanism. The second flange (2) has a locking flange (201) on its outer circumference that is adapted to the locking end (303).

2. A quick-release flange according to claim 1, characterized in that, The outer circumferential surface of the drive ring (304) is provided with anti-slip texture.

3. A quick-release flange according to claim 2, characterized in that, The first flange (1) has at least two sealing protrusions (101) on the mating surface facing the second flange, and the second flange (2) has a sealing groove (202) matching the sealing protrusions on the mating surface facing the first flange. The sealing groove (202) has a trapezoidal cross section. The outer wall of the sealing protrusion (101) is fitted with an elastic sealing strip (102) matching the sealing groove. The sealing strip (102) also has a trapezoidal cross section.

4. A quick-release flange according to claim 3, characterized in that, The limiting mechanism includes a sleeve (308) and a fastening bolt (309). The sleeve (308) is fixed at the end of the drive ring (304) away from the hinge seat. At least two screw holes are provided on the sleeve (308). The fastening bolt (309) is connected to the screw hole by thread. By tightening the fastening bolt (309), its end face is pressed tightly against the first flange (1), thereby locking the drive ring (304).

5. A quick-release flange according to any one of claims 1-4, characterized in that, Both the first flange (1) and the second flange (2) are made of austenitic stainless steel.

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