Plastic flange for pipeline connection

Abstract

The utility model discloses a plastic flange for pipeline connection, which comprises a first flange pipe, the outer surface of the first flange pipe is fixedly connected with a first flange ring, the inner surface of the first flange ring is in threaded connection with a bolt, and the outer surface of the bolt is in threaded connection with a nut. The outer surface of the bolt is in threaded connection with a second flange ring, and the inner surface of the second flange ring is fixedly connected with a second flange pipe. By arranging the left half protective cover, the sealing ring, the right half protective cover and the inserting ring, a sealing barrier can be formed around the flange connecting position, so that the possibility that a bolt is eroded by external impurities can be reduced while a medium is prevented from overflowing, the safety of a system is maintained, and the service life of the flange is prolonged; and by arranging a first sliding groove, a first sliding block, a second sliding groove, a second sliding strip, a buckle base and a fixing assembly, the left half protective cover and the right half protective cover can be conveniently disassembled, and therefore the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, and in particular to a plastic flange for pipe connection. Background Technology

[0002] With the rapid development of industrial technology, pipeline systems have been widely used in various fields such as chemical, petroleum, natural gas, water treatment, and food processing. As a crucial component of the entire system, pipeline connections directly affect the overall system's operating efficiency and maintenance costs through their sealing, reliability, and safety. Traditionally, flanges are the primary method of pipeline connection, with plastic flanges being the most common type.

[0003] However, existing plastic flanges still have certain defects. For example, the bolts and nuts used for flange connections are usually exposed and are easily corroded by external moisture and other impurities, affecting the service life of the flange. Secondly, the sealing performance of the flange connection is limited, and once liquid or gas leakage occurs, it will cause serious losses. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a plastic flange for pipe connection that can form a sealing barrier around the flange connection, thereby preventing the medium from overflowing and reducing the possibility of external impurities corroding the bolts, thus maintaining the safety of the system and extending the service life of the flange.

[0005] This utility model also provides a plastic flange for pipe connection as described above, comprising:

[0006] A first flange tube has a first flange ring fixedly connected to its outer surface. A bolt is threaded onto the inner surface of the first flange ring, and a nut is threaded onto the outer surface of the bolt. A second flange ring is threaded onto the outer surface of the bolt, and a second flange tube is fixedly connected to its inner surface. The outer surface of the first flange tube has a first sliding groove, and a first slider is slidably connected to the inner surface of the first sliding groove. A left half-protective cover is fixedly connected to the outer surface of the first slider, and an opening groove is provided on the side surface of the left half-protective cover. A sealing ring is provided on the inner surface of the opening groove. The outer surface of the second flange tube has a second sliding groove, and a second sliding strip is slidably connected to the inner surface of the second sliding groove. A right half-protective cover is fixedly connected to the outer surface of the second sliding strip, and a plug ring is fixedly connected to the side surface of the right half-protective cover. A snap-fit ​​seat is fixedly connected to the outer surface of the left half-protective cover.

[0007] A fixing assembly includes a fixing box, a sliding rod, a pressure block, a limiting ring, a first spring, a U-shaped inclined plane frame, an inclined block, a second spring, an L-shaped buckle, and an insert box. The side surface of the fixing box is fixedly connected to the insert box, the right end of the sliding rod is fixedly connected to the pressure block, the side surface of the limiting ring is fixedly connected to the first spring, the outer surface of the U-shaped inclined plane frame is slidably connected to the inclined block, the inner surface of the inclined block is fixedly connected to the second spring, and the side surface of the inclined block is fixedly connected to the L-shaped buckle.

[0008] According to the aforementioned plastic flange for pipe connection, the outer surface of the snap-fit ​​seat is provided with a through groove, and the inner surface of the through groove is adapted to the insertion box to facilitate the fixing of the left half protective cover and the right half protective cover.

[0009] According to the aforementioned plastic flange for pipe connection, the outer surface of the first flange tube is slidably connected to the left half of the protective cover, and the outer surface of the second flange tube is slidably connected to the right half of the protective cover.

[0010] According to the aforementioned plastic flange for pipe connection, the side surface of the left half of the protective cover is in contact with the right half of the protective cover, and the inner surface of the opening groove is adapted to the insertion ring.

[0011] According to the aforementioned plastic flange for pipe connection, the number of fixing components is two and symmetrically distributed, and the outer surface of the right half of the protective cover is fixedly connected to the fixing box.

[0012] According to the aforementioned plastic flange for pipe connection, the outer surface of the slide rod is slidably connected to the fixed box, and the outer surface of the slide rod is fixedly connected to the limiting ring.

[0013] According to the aforementioned plastic flange for pipe connection, the first spring is slidably sleeved on the outer surface of the slide rod, and the end of the first spring away from the limiting ring is fixedly connected to the fixing box.

[0014] According to the aforementioned plastic flange for pipe connection, the left end of the slide rod is fixedly connected to the U-shaped inclined plate frame, the outer surface of the L-shaped buckle is slidably connected to the fixing box, and the outer surface of the L-shaped buckle is slidably connected to the insertion box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting up a left half protective cover, a sealing ring, a right half protective cover, and a plug ring, a sealing barrier can be formed around the flange connection, which can prevent the medium from overflowing and reduce the possibility of external impurities corroding the bolts, thereby maintaining the safety of the system and extending the service life of the flange.

[0017] 2. By setting the first slide groove, the first slider, the second slide groove, the second slide bar, the buckle seat and the fixing components, the left half of the protective cover and the right half of the protective cover can be easily disassembled, thereby improving practicality.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of the overall structure of a plastic flange for pipe connection according to the present invention;

[0021] Figure 2 This is a partial structural diagram of a plastic flange for pipe connection according to the present invention;

[0022] Figure 3 This is an exploded view of a partial structure of a plastic flange for pipe connection according to the present invention.

[0023] Figure 4 This is a cross-sectional view of the internal structure of a plastic flange for pipe connection according to this utility model.

[0024] Legend:

[0025] 1. First flange pipe; 2. First flange ring; 3. Bolt; 4. Nut; 5. Second flange ring; 6. Second flange pipe; 7. First slide groove; 8. First slider; 9. Left half protective cover; 10. Opening groove; 11. Sealing ring; 12. Second slide groove; 13. Second slide bar; 14. Right half protective cover; 15. Insert ring; 16. Snap fastener; 17. Fixing assembly; 18. Fixing box; 19. Slide rod; 20. Pressure block; 21. Limiting ring; 22. First spring; 23. U-shaped inclined plate frame; 24. Inclined block; 25. Second spring; 26. L-shaped snap fastener; 27. Insert box; 28. Through groove. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-4This utility model discloses a plastic flange for pipe connection, comprising: a first flange pipe 1, a first flange ring 2 fixedly connected to the outer surface of the first flange pipe 1, a bolt 3 threadedly connected to the inner surface of the first flange ring 2, a nut 4 threadedly connected to the outer surface of the bolt 3, a second flange ring 5 threadedly connected to the outer surface of the bolt 3, a second flange pipe 6 fixedly connected to the inner surface of the second flange ring 5, a first sliding groove 7 provided on the outer surface of the first flange pipe 1, a first slider 8 slidably connected to the inner surface of the first sliding groove 7, a left half protective cover 9 fixedly connected to the outer surface of the first slider 8, an opening groove 10 provided on the side surface of the left half protective cover 9, and an opening groove 10 on the inner surface of the opening groove 10. The first flange pipe 1 is provided with a sealing ring 11. The outer surface of the second flange pipe 6 is provided with a second sliding groove 12. The inner surface of the second sliding groove 12 is slidably connected with a second sliding strip 13. The outer surface of the second sliding strip 13 is fixedly connected with a right half protective cover 14. The side surface of the right half protective cover 14 is fixedly connected with a plug ring 15. The outer surface of the left half protective cover 9 is fixedly connected with a snap seat 16. The outer surface of the snap seat 16 is provided with a through groove 28. The outer surface of the first flange pipe 1 is slidably connected with the left half protective cover 9. The outer surface of the second flange pipe 6 is slidably connected with the right half protective cover 14. The side surface of the left half protective cover 9 is in contact with the right half protective cover 14. The inner surface of the opening groove 10 is adapted to the plug ring 15.

[0028] The fixing assembly 17 includes a fixing box 18, a slide rod 19, a pressure block 20, a limiting ring 21, a first spring 22, a U-shaped inclined plane frame 23, an inclined block 24, a second spring 25, an L-shaped buckle 26, and an insert box 27. The side surface of the fixing box 18 is fixedly connected to the insert box 27. The right end of the slide rod 19 is fixedly connected to the pressure block 20. The side surface of the limiting ring 21 is fixedly connected to the first spring 22. The outer surface of the U-shaped inclined plane frame 23 is slidably connected to the inclined block 24. The inner surface of the inclined block 24 is fixedly connected to the second spring 25. The side surface of the inclined block 24 is fixedly connected to the L-shaped buckle 26. A through slot is also included. The inner surface of 28 is adapted to the insertion box 27. There are two fixing components 17, which are symmetrically distributed. The outer surface of the right half protective cover 14 is fixedly connected to the fixing box 18. The outer surface of the slide rod 19 is slidably connected to the fixing box 18. The outer surface of the slide rod 19 is fixedly connected to the limiting ring 21. The first spring 22 is slidably sleeved on the outer surface of the slide rod 19. The end of the first spring 22 away from the limiting ring 21 is fixedly connected to the fixing box 18. The left end of the slide rod 19 is fixedly connected to the U-shaped inclined frame 23. The outer surface of the L-shaped buckle 26 is slidably connected to the fixing box 18. The outer surface of the L-shaped buckle 26 is slidably connected to the insertion box 27.

[0029] Working principle: In use, the first slider 8 is slid into the first groove 7 and the second slider 13 is slid into the second groove 12. Then, the pressure block 20 on the fixing assembly 17 is pressed, which drives the slider 19 to move the U-shaped inclined plate 23 along the inclined plate 24, compressing the first spring 22 and the second spring 25. This causes the corresponding two L-shaped buckles 26 to move closer to each other and retract into the insert box 27. Then, the insert ring 15 is inserted into the opening groove 10 and contacts the sealing ring 11. At this time, the insert box 27 is inserted into the through groove 28. After the L-shaped buckles 26 are exposed from the through groove 28, the pressure block 20 is released, and the first spring 22 is compressed. Under the restoring force of the second spring 25 and the second spring 22, the two L-shaped buckles 26 corresponding to the fixing component 17 will unfold to both sides, thereby closing the left half protective cover 9 and the right half protective cover 14, and thus achieving the covering and sealing of the flange interface. When it is necessary to disassemble the left half protective cover 9 and the right half protective cover 14, simply press the pressure block 20 again to drive the corresponding two L-shaped buckles 26 to retract into the interior of the insertion box 27, thereby releasing the restrictive effect of the left half protective cover 9 and the right half protective cover 14. Then, the first slider 8 and the second slide bar 13 can slide out along the first slide groove 7 and the second slide groove 12 respectively to complete the disassembly. It is simple, convenient and highly practical.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A plastic flange for pipe connection, characterized in that, The utility model relates to a flange pipe fixing device, including: First flange pipe (1), the outer surface fixed connection of first flange pipe (1) has first flange ring (2), the inner surface threaded connection of first flange ring (2) has bolt (3), the outer surface threaded connection of bolt (3) has nut (4), the outer surface threaded connection of bolt (3) has second flange ring (5), the inner surface fixed connection of second flange ring (5) has second flange pipe (6), the outer surface of first flange pipe (1) is provided with first sliding groove (7), the inner surface sliding connection of first sliding groove (7) has first sliding block (8), the outer surface fixed connection of first sliding block (8) has left half shield (9), the lateral surface of left half shield (9) is provided with open slot (10), the inner surface of open slot (10) is provided with sealing ring (11), the outer surface of second flange pipe (6) is provided with second sliding groove (12), the inner surface sliding connection of second sliding groove (12) has second sliding strip (13), the outer surface fixed connection of second sliding strip (13) has right half shield (14), the lateral surface fixed connection of right half shield (14) has insert ring (15), the outer surface fixed connection of left half shield (9) has buckle seat (16), Fixed assembly (17), the fixed assembly (17) includes fixed box (18), sliding rod (19), pressure block (20), limit ring (21), first spring (22), U-shaped inclined surface frame (23), inclined surface block (24), second spring (25), L-shaped buckle (26) with insert box (27), the lateral surface of fixed box (18) is fixedly connected with insert box (27), the right end of sliding rod (19) is fixedly connected with pressure block (20), the lateral surface of limit ring (21) is fixedly connected with first spring (22), the outer surface of U-shaped inclined surface frame (23) is slidably connected with inclined surface block (24), the inner surface of inclined surface block (24) is fixedly connected with second spring (25), the lateral surface of inclined surface block (24) is fixedly connected with L-shaped buckle (26).

2. A plastic flange for pipe connection according to claim 1, wherein, The outer surface of the buckle seat (16) is provided with a through groove (28), and the inner surface of the through groove (28) is matched with the insert box (27).

3. A plastic flange for pipe connections according to claim 1, characterized in that The outer surface of the first flange pipe (1) is slidably connected with the left half shield (9), and the outer surface of the second flange pipe (6) is slidably connected with the right half shield (14).

4. A plastic flange for pipe connections according to claim 1, characterized in that The lateral surface of the left half shield (9) is in contact with the right half shield (14), and the inner surface of the open slot (10) is matched with the insert ring (15).

5. A plastic flange for pipe connections according to claim 1, characterized in that The number of the fixed assembly (17) is two and is symmetrically distributed, and the outer surface of the right half shield (14) is fixedly connected with the fixed box (18).

6. A plastic flange for pipe connections according to claim 1, characterized in that The outer surface of the sliding rod (19) is slidably connected with the fixed box (18), and the outer surface of the sliding rod (19) is fixedly connected with the limit ring (21).

7. A plastic flange for pipe connections according to claim 1, characterized in that The first spring (22) is slidably sleeved on the outer surface of the sliding rod (19), and one end of the first spring (22) away from the limit ring (21) is fixedly connected with the fixed box (18).

8. A plastic flange for pipe connections according to claim 1, characterized in that The left end of the slide rod (19) is fixedly connected with the U-shaped inclined frame (23), the outer surface of the L-shaped buckle (26) is slidably connected with the fixed box (18), and the outer surface of the L-shaped buckle (26) is slidably connected with the plug-in box (27).

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