Hubbed flat welding flange easy to install

Abstract

The utility model provides an easy-to-install hubbed flat welding flange, which relates to the technical field of flanges and comprises a first flange and a second flange. According to the utility model, after the two positioning sleeves are aligned with the two positioning blocks, the push rod is pressed downwards to drive the two reset springs and the telescopic rod to move downwards, so that the push rod is pushed inwards to drive the two positioning blocks to move inwards along the movable sleeve after the limiting block is separated from the limiting groove and moves into the mounting groove; and then the push rod is loosened, under the acting force of the reset spring and the telescopic rod, the limiting block is driven to be pushed out of the mounting groove and clamped into the limiting groove, the positioning blocks are limited and fixed, and therefore pre-mounting of the first flange and the second flange is rapidly completed. The first through holes and the second through holes in the first flange and the second flange are quickly aligned, then the bolts are sequentially inserted, and then the first flange and the second flange can be quickly mounted by screwing the nuts.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, and in particular to an easy-to-install necked flat-weld flange. Background Technology

[0002] A flange, also called a flange plate or flange, is a part used to connect shafts to each other and to connect pipe ends. There are also flanges used on equipment inlets and outlets to connect two pieces of equipment. A slip-on flange with a neck is mainly used to connect pipes to each other. Slip-on flanges with necks have holes for bolts to pass through, so that two flanges are tightly connected. A gasket is used to seal between the flanges.

[0003] In the prior art, such as Chinese Patent No. CN216743301U, a necked flat-welding flange is disclosed, including a flange plate and a flange neck. The flange plate has a through hole in its center, and the flange neck has a small through hole with a protruding end that fits into the through hole. The flange plate has an installation wedge, and the flange neck has a movable block that matches the installation wedge. A limit rod is connected to the movable block, and the flange plate has an annular groove with a slot that engages with the limit rod. This invention has the advantages of tight fit between the flange neck and the flange plate, convenient installation, and strong welding, which can effectively improve the welding quality between the flange neck and the flange plate and enhance the connection strength.

[0004] The aforementioned patent can effectively improve the welding quality between the flange neck and the flange plate and enhance the connection strength. However, the installation of the necked flat welding flange plate generally uses multiple bolts and multiple nuts for connection and installation. This means that during the installation process, the mounting holes of the two flange plates need to be bolted one by one, which is time-consuming and laborious, and increases the difficulty of connecting the flange plates. Utility Model Content

[0005] The purpose of this utility model is to solve the problem mentioned in the above-mentioned patent, which can effectively improve the welding quality between the flange neck and the flange and enhance the connection strength. However, the installation of the necked flat welding flange generally uses multiple bolts and nuts for connection and installation. This requires that the mounting holes of the two flanges be bolted one by one during the installation process, which is time-consuming and laborious and increases the difficulty of connecting the flanges. Therefore, this utility model proposes an easy-to-install necked flat welding flange.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an easy-to-install necked flat-welding flange, comprising a first flange and a second flange, wherein the top of the first flange is symmetrically fixedly connected with positioning components, and the bottom of the second flange is uniformly fixedly connected with multiple limiting components.

[0007] The positioning component includes a movable sleeve, a positioning block is movably inserted into the inner surface of the movable sleeve, an installation groove is formed on the top of the positioning block, telescopic rods are symmetrically fixedly connected to the bottom of the installation groove, a limit block is fixedly connected between the tops of the two telescopic rods, a return spring is sleeved on the outer surface of each of the two telescopic rods, and a limit groove is formed on the top of the movable sleeve; the limiting component includes a limiting sleeve, the top of which is fixedly connected to the bottom of the second flange.

[0008] Preferably, the bottom of the movable sleeve is fixedly connected to the top of the first flange, and the outer surface of the limiting block mates with the inner surface of the limiting groove.

[0009] Preferably, a push rod is fixedly connected to the top of the limiting block, and the outer surface of the limiting block mates with the inner surface of the mounting groove.

[0010] Preferably, the inner surface of the limiting sleeve has two fixing grooves, and the inner surface of each of the two fixing grooves is fixedly connected with a movable rod.

[0011] Preferably, one end of each of the two movable rods is fixedly connected to an arc-shaped ball, and a fixing spring is sleeved on the outer surface of each of the two movable rods.

[0012] Preferably, the bottom of the limiting sleeve has a groove, and the outer surfaces of the two arc-shaped balls respectively mate with the inner surfaces of the two fixing grooves.

[0013] Preferably, the bottom of the second flange is symmetrically fixedly connected with positioning sleeves, and the inner surfaces of the two positioning sleeves are engaged with the outer surfaces of the two positioning blocks.

[0014] Preferably, the top of the first flange is provided with a plurality of first through holes evenly distributed, and the top of the second flange is provided with a plurality of second through holes evenly distributed.

[0015] Preferably, bolts are inserted into the inner surface of each of the first through holes, and the plurality of bolts respectively cooperate with the plurality of second through holes.

[0016] Preferably, the outer surfaces of the plurality of bolts are threaded with nuts, and the outer surfaces of the plurality of nuts mate with the inner surfaces of the plurality of limiting sleeves.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] 1. In this utility model, after aligning the two positioning sleeves with the two positioning blocks, press the push rod downwards to move the two return springs and the telescopic rod downwards, causing the limiting block to separate from the limiting groove and move into the installation groove. Then, push the push rod inwards to move the two positioning blocks along the movable sleeve inwards until the two positioning blocks are inserted into the positioning sleeves on the second flange. Then, release the push rod. Under the force of the return springs and the telescopic rod, the limiting block is pushed out of the installation groove and engaged in the limiting groove, thus limiting and fixing the positioning block. This quickly completes the pre-installation of the first flange and the second flange, allowing the first through hole and the second through hole on the first flange and the second flange to be quickly aligned. Then, the bolts are inserted in sequence, and the nuts are tightened to quickly complete the installation of the first flange and the second flange.

[0019] 2. In this utility model, by aligning the nut with the limiting sleeve and pushing it downwards, the bottom of the nut applies a squeezing force to the arc surfaces of the two arc-shaped balls, causing the two arc-shaped balls to move into the fixing groove and compress the fixing spring and the movable rod. This pushes the nut completely into the limiting sleeve. Then, the arc-shaped balls lose external pressure and are pushed outwards by the fixing spring. The movable rod ensures the movement trajectory of the arc-shaped balls. Therefore, the nut is limited in the limiting sleeve by the two arc-shaped balls. Thus, when tightening the bolt and nut, no additional tools are needed to fix the nut, simplifying the installation steps. Attached Figure Description

[0020] Figure 1 A perspective view of an easy-to-install necked flat-welding flange is provided for this utility model;

[0021] Figure 2 This utility model provides a bottom schematic diagram of an easy-to-install necked flat-weld flange;

[0022] Figure 3 An unfolded view of an easy-to-install necked flat-weld flange is provided for this utility model;

[0023] Figure 4 This utility model provides an unfolded diagram of a positioning assembly for an easy-to-install necked flat-welding flange;

[0024] Figure 5 A cross-sectional view of a positioning assembly for an easy-to-install necked flat-welding flange is provided for this utility model;

[0025] Figure 6 A sectional view of a limit assembly for an easy-to-install necked flat-welding flange is provided for this utility model.

[0026] Figure 7 This utility model provides a partial structural cross-sectional view of an easy-to-install necked flat-weld flange.

[0027] Legend: 1. First flange; 2. Bolt; 3. Positioning assembly; 301. Positioning block; 302. Push rod; 303. Limiting block; 304. Mounting groove; 305. Telescopic rod; 306. Return spring; 307. Movable sleeve; 308. Limiting groove; 4. Second flange; 5. Limiting assembly; 501. Limiting sleeve; 502. Movable rod; 503. Fixed groove; 504. Arc-shaped ball; 505. Fixed spring; 506. Groove; 6. Positioning sleeve; 7. Nut; 8. First through hole; 9. Second through hole. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0030] Example 1, as Figures 1-7 As shown, this utility model provides an easy-to-install necked flat-welding flange, including a first flange 1 and a second flange 4. A positioning assembly 3 is symmetrically fixedly connected to the top of the first flange 1, and multiple limiting assemblies 5 are uniformly fixedly connected to the bottom of the second flange 4. The positioning assembly 3 includes a movable sleeve 307, with a positioning block 301 movably inserted into the inner surface of the movable sleeve 307. An installation groove 304 is formed on the top of the positioning block 301, and telescopic rods 305 are symmetrically fixedly connected to the bottom of the installation groove 304. A limiting block 303 is fixedly connected between the tops of the two telescopic rods 305, and a return spring 306 is sleeved on the outer surface of each of the two telescopic rods 305. A limiting groove 308 is formed on the top of the movable sleeve 307. The limiting assembly 5 includes a limiting sleeve 50. 1. The top of the limiting sleeve 501 is fixedly connected to the bottom of the second flange 4, the bottom of the movable sleeve 307 is fixedly connected to the top of the first flange 1, the outer surface of the limiting block 303 matches the inner surface of the limiting groove 308, the top of the limiting block 303 is fixedly connected to the push rod 302, the outer surface of the limiting block 303 matches the inner surface of the mounting groove 304, the top of the first flange 1 is evenly provided with multiple first through holes 8, the top of the second flange 4 is evenly provided with multiple second through holes 9, the inner surface of each first through hole 8 is provided with a bolt 2, the multiple bolts 2 respectively match the multiple second through holes 9, the outer surface of each multiple bolt 2 is threaded with a nut 7, the outer surface of each multiple nut 7 matches the inner surface of each multiple limiting sleeve 501.

[0031] The overall effect of Embodiment 1 is as follows: when it is necessary to connect the first flange 1 and the second flange 4, after aligning the first flange 1 with the second flange 4, rotate the second flange 4 to align the two positioning sleeves 6 with the two positioning blocks 301, press down on the push rod 302, causing the two return springs 306 and the telescopic rod 305 to move downwards, so that the limiting block 303 separates from the limiting groove 308 and moves into the mounting groove 304. Then, push the push rod 302 inwards, causing the two positioning blocks 301 to move inwards along the movable sleeve 307 until the two positioning blocks 301 are inserted into the positioning sleeves 6 on the second flange 4. Then, release the push rod 302, and the return springs 306 and the telescopic rod 305 will move inwards. Under the action of the force, the limiting block 303 is pushed out of the mounting groove 304 and engaged in the limiting groove 308, which limits and fixes the positioning block 301, thereby quickly completing the pre-installation of the first flange 1 and the second flange 4, so that the first through hole 8 and the second through hole 9 on the first flange 1 and the second flange 4 are quickly aligned. Then, the bolts 2 are inserted in sequence, and then the nuts 7 are tightened to quickly complete the installation of the first flange 1 and the second flange 4. During the disassembly process, by rotating the bolts 2 to separate the bolts 2 from the nuts 7, the push rod 302 is installed downward and pushed outward to separate the positioning block 301 from the positioning sleeve 6, thereby facilitating the separation of the first flange 1 and the second flange 4.

[0032] Example 2, as Figures 1-7 As shown, the inner surface of the limiting sleeve 501 has two fixing grooves 503, and the inner surfaces of the two fixing grooves 503 are fixedly connected to movable rods 502. One end of each movable rod 502 is fixedly connected to an arc-shaped ball 504. The outer surfaces of the two movable rods 502 are fitted with fixing springs 505. The bottom of the limiting sleeve 501 has a slot 506. The outer surfaces of the two arc-shaped balls 504 respectively mate with the inner surfaces of the two fixing grooves 503. The bottom of the second flange 4 is symmetrically fixedly connected to positioning sleeves 6. The inner surfaces of the two positioning sleeves 6 mate with the outer surfaces of the two positioning blocks 301.

[0033] The effect achieved by the entire embodiment 2 is as follows: after the first flange 1 and the second flange 4 are pre-installed, by aligning the nut 7 with the limiting sleeve 501 and pushing it downwards, the bottom of the nut 7 applies a squeezing force to the arcuate surfaces of the two arcuate balls 504, causing the two arcuate balls 504 to move into the fixing groove 503 and compress the fixing spring 505 and the movable rod 502, thus completely pushing the nut 7 into the limiting sleeve 501. Then, the arcuate balls 504 lose external pressure and are pushed outwards by the action of the fixing spring 505, and the movable rod 502... The moving rod 502 ensures the movement trajectory of the arc ball 504. Therefore, the nut 7 is limited in the limiting sleeve 501 by the two arc balls 504. Thus, when tightening the bolt 2 and the nut 7, no additional tools are needed to fix the nut 7, which simplifies the installation steps and reduces the difficulty of operation. When the nut 7 needs to be replaced, an external tool can be inserted into the gap between the nut 7 and the second flange 4 through the slot 506, and then pushed upwards to make the top of the nut 7 apply pressure to the arc ball 504 and move it into the fixing slot 503, so that the nut 7 can be removed and replaced.

[0034] Working principle: When connecting the first flange 1 and the second flange 4, align the first flange 1 with the second flange 4, rotate the second flange 4 to align the two positioning sleeves 6 with the two positioning blocks 301, press down on the push rod 302, causing the two return springs 306 and the telescopic rod 305 to move downwards, so that the limiting block 303 separates from the limiting groove 308 and moves into the mounting groove 304. Then push the push rod 302 inwards, causing the two positioning blocks 301 to move inwards along the movable sleeve 307 until the two positioning blocks 301 are inserted into the positioning sleeves 6 on the second flange 4. Then release the push rod 302. Under the force of the return springs 306 and the telescopic rod 305, the limiting block 303 is pushed out of the mounting groove 304 and engaged in the limiting groove 308, thus limiting and fixing the positioning block 301. The pre-installation of the first flange 1 and the second flange 4 is completed quickly. Then, the nut 7 is aligned with the limiting sleeve 501 and pushed downwards. This causes the bottom of the nut 7 to exert a squeezing force on the arc surfaces of the two arc-shaped balls 504, which in turn moves the two arc-shaped balls 504 into the fixing groove 503 and compresses the fixing spring 505 and the movable rod 502. This pushes the nut 7 completely into the limiting sleeve 501. Then, the arc-shaped balls 504 lose external pressure and are pushed outwards by the fixing spring 505. The movable rod 502 ensures the movement trajectory of the arc-shaped balls 504. Therefore, the nut 7 is limited in the limiting sleeve 501 by the two arc-shaped balls 504. Thus, when tightening the bolt 2 and the nut 7, no additional tools are needed to fix the nut 7, simplifying the installation steps and reducing the difficulty of operation.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An easy-to-install, necked, flat face welding flange, characterized by: Including first flange (1) and second flange (4), the top of first flange (1) is fixedly connected with positioning assembly (3) symmetrically, the bottom of second flange (4) is uniformly fixedly connected with multiple limiting assemblies (5); The positioning assembly (3) includes a movable sleeve (307), a positioning block (301) is movably inserted into the inner surface of the movable sleeve (307), an installation groove (304) is formed in the top of the positioning block (301), the inner bottom of the installation groove (304) is fixedly connected with a telescopic rod (305) symmetrically, a limiting block (303) is fixedly connected between the tops of the two telescopic rods (305), a return spring (306) is sleeved on the outer surface of each telescopic rod (305), and a limiting groove (308) is formed in the top of the movable sleeve (307). The limiting assembly (5) includes a limiting sleeve (501), and the top of the limiting sleeve (501) is fixedly connected with the bottom of the second flange (4).

2. The easy-to-install necked plain flange according to claim 1, characterized in that: The bottom of the movable sleeve (307) is fixedly connected with the top of the first flange (1), and the outer surface of the limiting block (303) is matched with the inner surface of the limiting groove (308).

3. The easy-to-install necked plain flange of claim 1, wherein: The top of the limiting block (303) is fixedly connected with a push rod (302), and the outer surface of the limiting block (303) is matched with the inner surface of the installation groove (304).

4. The easy-to-install necked plain flange of claim 1, wherein: The inner surface of the limiting sleeve (501) is provided with two fixed grooves (503), and the inner surface of each fixed groove (503) is fixedly connected with a movable rod (502).

5. The easy-to-install necked plain flange of claim 4, wherein: One end of each movable rod (502) is fixedly connected with an arc-shaped ball (504), and a fixed spring (505) is sleeved on the outer surface of each movable rod (502).

6. The easy-to-install necked plain flange of claim 5, wherein: A notch (506) is formed in the bottom of the limiting sleeve (501), and the outer surfaces of the two arc-shaped balls (504) are matched with the inner surfaces of the two fixed grooves (503) respectively.

7. The easy-to-install necked plain flange of claim 6, wherein: The bottom of the second flange (4) is fixedly connected with positioning sleeves (6) symmetrically, and the inner surfaces of the two positioning sleeves (6) are matched with the outer surfaces of the two positioning blocks (301).

8. The easy-to-install necked plain flange of claim 1, wherein: Multiple first through holes (8) are uniformly formed in the top of the first flange (1), and multiple second through holes (9) are uniformly formed in the top of the second flange (4).

9. The easy-to-install necked plain flange of claim 8, wherein: A bolt (2) is inserted into the inner surface of each first through hole (8), and the multiple bolts (2) are matched with the multiple second through holes (9) respectively.

10. The easy-to-install necked plain flange of claim 9, wherein: The outer surface of each bolt (2) is threadedly connected with a nut (7), and the outer surfaces of the multiple nuts (7) are matched with the inner surfaces of the multiple limiting sleeves (501).

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