A stainless steel flange

Abstract

The utility model discloses a stainless steel flange, including a left connecting pipe, the outer surface of the left connecting pipe is fixedly connected with a left half flange, the right surface of the left half flange is provided with a right half flange, the inner surface of the right half flange is fixedly connected with a right connecting pipe, the inner surface of the right half flange is provided with a fixing bolt, the outer surface of the fixing bolt is threadedly connected with a fixing nut, the outer surface of the left connecting pipe is threadedly connected with a first limiting ring, and the outer surface of the right connecting pipe is threadedly connected with a second limiting ring. The first limiting ring, the second limiting ring, the left half cover, and the right half cover can be provided to cover the bolts at the flange connection to avoid being eroded by rainwater, thereby improving the service life of the flange, and the closed left half cover and right half cover can be quickly opened by cooperating with a buckle seat and a fixing device, so that it is convenient for maintenance personnel to inspect the flange connection and improve practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a stainless steel flange. Background Art

[0002] Stainless steel flange is a flange made of stainless steel material. It has good corrosion resistance, high temperature resistance and low temperature resistance, and is suitable for a variety of harsh environments. Stainless steel flange is widely used in chemical, petroleum, food, pharmaceutical, electric power, nuclear energy, aerospace, shipbuilding and other industries for the connection of pipelines, valves, pumps, heat exchangers and other equipment.

[0003] However, traditional stainless steel flanges still have certain defects. For example, flanges are usually installed outdoors. Although the stainless steel flanges themselves have anti-rust functions, the bolts at the flange connections will still be corroded by rainwater and cause rust, which in turn affects the overall service life of the flange. After searching, it was found that the technical solution provided by the utility model with application number CN202222930484.2 also has the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a stainless steel flange. The bolts at the flange connection can be covered by the arrangement of a first limiting ring, a second limiting ring, a left half protective cover and a right half protective cover to avoid erosion by rainwater, thereby improving the service life of the flange. In addition, the closed left half protective cover and right half protective cover can be quickly opened in conjunction with a snap seat and a fixing device, thereby facilitating maintenance personnel to inspect the flange connection and improving practicality.

[0005] The utility model also provides the above-mentioned stainless steel flange, including a left connecting pipe and a fixing device, the outer surface of the left connecting pipe is fixedly connected with a left half-flange, the right surface of the left half-flange is provided with a right half-flange, the inner surface of the right half-flange is fixedly connected with a right connecting pipe, the inner surface of the right half-flange is provided with a fixing bolt, the outer surface of the fixing bolt is threadedly connected with a fixing nut, the outer surface of the left connecting pipe is threadedly connected with a first limiting ring, the outer surface of the right connecting pipe is threadedly connected with a second limiting ring, the outer surface of the left connecting pipe is slidably connected with a left half protective cover, the outer surface of the left half protective cover is fixedly connected with a snap seat, and the outer surface of the right connecting pipe is slidably connected with the right half protective cover.

[0006] The fixing device includes a fixing box, a sliding rod, a spring, a slider, a fixing seat, a handle, a fixing column, an L-shaped connecting rod and a snap block. The inner surface of the fixing box is fixedly connected to the sliding rod, the right end of the spring is fixedly connected to the slider, the right surface of the fixing seat is fixedly connected to the handle, the outer surface of the fixing column is fixedly connected to the L-shaped connecting rod, and the end of the L-shaped connecting rod away from the fixing column is fixedly connected to the snap block.

[0007] The left surface of the buckle seat is provided with a buckle slot, and the inner surface of the buckle slot is matched with the buckle block to facilitate the closing of the left and right protective covers.

[0008] The upper surface of the fixing box is provided with a limiting groove, the inner surface of which is matched with the sliding block and is used for limiting the sliding block when it moves.

[0009] The outer surface of the fixing bolt is slidably connected to the left half flange, and the right surface of the fixing nut is in contact with the left half flange.

[0010] The right surface of the first limiting ring contacts the left half protective cover, and the right surface of the left half protective cover contacts the right half protective cover.

[0011] The right surface of the right half protective cover is in contact with the second limiting ring, and the outer surface of the right half protective cover is fixedly connected to the fixing box.

[0012] The left end of the spring is fixedly connected to the fixing box, and the outer surface of the sliding rod is slidably connected to the sliding block.

[0013] The upper surface of the sliding block is fixedly connected to the fixing seat, and the outer surface of the fixing column is fixedly connected to the fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a stainless steel flange.

[0015] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0016] Figure 3 The utility model is a schematic diagram of the overall structure of a stainless steel flange.

[0017] Figure 4 This is a partial structural sectional view of a stainless steel flange of the utility model.

[0018] Legend:

[0019] 1. Left connecting pipe; 2. Left half flange; 3. Right half flange; 4. Right connecting pipe; 5. Fixing bolt; 6. Fixing nut; 7. First limiting ring; 8. Second limiting ring; 9. Left half protective cover; 10. Buckle seat; 11. Right half protective cover; 12. Fixing device; 13. Fixing box; 14. Sliding rod; 15. Spring; 16. Sliding block; 17. Fixing seat; 18. Handle; 19. Fixing column; 20. L-shaped connecting rod; 21. Buckle block; 22. Slot; 23. Limiting slot. DETAILED DESCRIPTION

[0020] Reference Figure 1-4The utility model embodiment is a stainless steel flange, which includes a left connecting pipe 1 and a fixing device 12, the outer surface of the left connecting pipe 1 is fixedly connected with a left half flange 2, the right surface of the left half flange 2 is provided with a right half flange 3, the inner surface of the right half flange 3 is fixedly connected with a right connecting pipe 4, the inner surface of the right half flange 3 is provided with a fixing bolt 5, the outer surface of the fixing bolt 5 is threadedly connected with a fixing nut 6, the outer surface of the left connecting pipe 1 is threadedly connected with a first limiting ring 7, the outer surface of the right connecting pipe 4 is threadedly connected with a second limiting ring 8, the left connecting pipe The outer surface of the tube 1 is slidably connected to the left half cover 9, the outer surface of the left half cover 9 is fixedly connected to the buckle seat 10, the outer surface of the right connecting tube 4 is slidably connected to the right half cover 11, the left surface of the buckle seat 10 is provided with a card slot 22, the outer surface of the fixing bolt 5 is slidably connected to the left half flange 2, the right surface of the fixing nut 6 is in contact with the left half flange 2, the right surface of the first limiting ring 7 is in contact with the left half cover 9, the right surface of the left half cover 9 is in contact with the right half cover 11, and the right surface of the right half cover 11 is in contact with the second limiting ring 8.

[0021] The fixing device 12 includes a fixing box 13, a sliding bar 14, a spring 15, a slider 16, a fixing seat 17, a handle 18, a fixing column 19, an L-shaped connecting rod 20 and a buckle block 21. The inner surface of the fixing box 13 is fixedly connected to the sliding bar 14, the right end of the spring 15 is fixedly connected to the slider 16, the right surface of the fixing seat 17 is fixedly connected to the handle 18, the outer surface of the fixing column 19 is fixedly connected to the L-shaped connecting rod 20, and the end of the L-shaped connecting rod 20 away from the fixing column 19 is fixedly connected to the buckle block 21. The block 21 is fixedly connected, the inner surface of the card slot 22 is adapted to the card buckle block 21, the upper surface of the fixed box 13 is provided with a limiting groove 23, the inner surface of the limiting groove 23 is adapted to the slider 16, the outer surface of the right half cover 11 is fixedly connected to the fixed box 13, the left end of the spring 15 is fixedly connected to the fixed box 13, the outer surface of the slide bar 14 is slidably connected to the slider 16, the upper surface of the slider 16 is fixedly connected to the fixed seat 17, and the outer surface of the fixing column 19 is fixedly connected to the fixed seat 17.

[0022] After the flange is installed, the left half cover 9 and the right half cover 11 are inserted along the left connecting pipe 1 and the right connecting pipe 4 respectively. When the left half cover 9 contacts the right half cover 11, the handle 18 is pushed to drive the fixing seat 17 to move to the left along the slide rod 14 under the action of the spring 15, and the spring 15 is compressed, and then the L-shaped connecting rod 20 is turned around the fixing column 19. When the buckle block 21 on the L-shaped connecting rod 20 corresponds to the slot 22, the handle 18 is released. Under the restoring force of the spring 15, the buckle block 21 is automatically snapped into the slot 22, and the left half cover 9 and the right half cover 11 are closed, thereby preventing the fixing bolts 5 and the fixing nuts 6 at the flange connection from being eroded by rainwater. , and by rotating the first limiting ring 7 and the second limiting ring 8, the first limiting ring 7 is against the left half protective cover 9, and the second limiting ring 8 is against the right half protective cover 11, the left half protective cover 9 and the right half protective cover 11 in the closed state can be limited as a whole to avoid sliding. When it is necessary to inspect the fixing bolts 5 or the fixing nuts 6 at the flange connection, it is only necessary to push the handle 18 again to drive the buckle block 21 out of the inside of the card slot 22, and then flip the L-shaped connecting rod 20 to release the limiting effect of the left half protective cover 9 and the right half protective cover 11, and then unscrew the first limiting ring 7 and the second limiting ring 8 respectively, and the left half protective cover 9 and the right half protective cover 11 in the closed state can be opened for inspection, which is simple and convenient.

Claims

1. A stainless steel flange, characterized in that: The invention comprises a left connecting pipe (1) and a fixing device (12), wherein the outer surface of the left connecting pipe (1) is fixedly connected to a left half flange (2), the right surface of the left half flange (2) is provided with a right half flange (3), the inner surface of the right half flange (3) is fixedly connected to a right connecting pipe (4), the inner surface of the right half flange (3) is provided with a fixing bolt (5), the outer surface of the fixing bolt (5) is threadedly connected to a fixing nut (6), the outer surface of the left connecting pipe (1) is threadedly connected to a first limiting ring (7), the outer surface of the right connecting pipe (4) is threadedly connected to a second limiting ring (8), the outer surface of the left connecting pipe (1) is slidably connected to a left half protective cover (9), the outer surface of the left half protective cover (9) is fixedly connected to a buckle seat (10), and the outer surface of the right connecting pipe (4) is slidably connected to the right half protective cover (11); The fixing device (12) comprises a fixing box (13), a sliding rod (14), a spring (15), a slider (16), a fixing seat (17), a handle (18), a fixing column (19), an L-shaped connecting rod (20) and a buckle block (21); the inner surface of the fixing box (13) is fixedly connected to the sliding rod (14); the right end of the spring (15) is fixedly connected to the slider (16); the right surface of the fixing seat (17) is fixedly connected to the handle (18); the outer surface of the fixing column (19) is fixedly connected to the L-shaped connecting rod (20); and the end of the L-shaped connecting rod (20) away from the fixing column (19) is fixedly connected to the buckle block (21).

2. A stainless steel flange according to claim 1, characterized in that: A locking groove (22) is provided on the left surface of the locking seat (10), and the inner surface of the locking groove (22) is adapted to fit the locking block (21).

3. A stainless steel flange according to claim 1, characterized in that: A limiting groove (23) is provided on the upper surface of the fixing box (13), and the inner surface of the limiting groove (23) is adapted to fit the sliding block (16).

4. A stainless steel flange according to claim 1, characterized in that: The outer surface of the fixing bolt (5) is slidably connected to the left half flange (2), and the right surface of the fixing nut (6) is in contact with the left half flange (2).

5. The stainless steel flange according to claim 1, characterized in that: The right surface of the first limiting ring (7) is in contact with the left half protective cover (9), and the right surface of the left half protective cover (9) is in contact with the right half protective cover (11).

6. A stainless steel flange according to claim 1, characterized in that: The right surface of the right half protective cover (11) is in contact with the second limiting ring (8), and the outer surface of the right half protective cover (11) is fixedly connected to the fixing box (13).

7. The stainless steel flange according to claim 1, characterized in that: The left end of the spring (15) is fixedly connected to the fixed box (13), and the outer surface of the sliding rod (14) is slidably connected to the sliding block (16).

8. The stainless steel flange according to claim 1, characterized in that: The upper surface of the sliding block (16) is fixedly connected to the fixing seat (17), and the outer surface of the fixing column (19) is fixedly connected to the fixing seat (17).

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