Flange structure with good sealing performance

Abstract

The utility model discloses a flange structure with good sealing performance, which relates to the field of flange devices and comprises a front disc, a rear disc is arranged behind the front disc, a protective hoop is sleeved on the outer surface of the front disc and the outer surface of the rear disc, an alarm box is arranged on the lower surface of the protective hoop, a bolt hole is arranged on the front disc and penetrates through the front disc, and the rear disc is arranged on the rear disc. A bolt hole is formed in the front disc, a fixing bolt is installed in the bolt hole, a front sealing ring is installed on the outer surface of the front disc, a positioning block is installed on the rear surface of the front disc, a front disc protruding ring is fixedly installed in the center of the rear surface of the front disc, and a sealing ring is installed in the front disc protruding ring. The protective hoop, the sealing ring and the limiting ring are arranged, so that the rubber pad between the flange plates can be prevented from deviating and corroding, the sealing performance of the flange is improved, meanwhile, rapid positioning can be achieved, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange device field, especially a flange structure that good sealing. BACKGROUND

[0002] Flange is an important pipe fitting for connecting pipes, valves, pumps and other equipment, and the flange plate is a form of flange, which is usually a flat disc structure with similar holes to the flange for bolt penetration. The flange plate is usually used to connect pipes or equipment in the pipe system, and adjacent flange plates are firmly fixed together by bolts to form a tight pipe connection.

[0003] At present, most flange plates use rubber pads for sealing during sealing work. This sealing method has good sealing effect in a short time, but the flange may vibrate during work. Long-term vibration and air and rainwater erosion of the rubber pad at the flange connection may cause the rubber pad between the flange plates to deviate and corrode, affecting the sealing performance of the flange. In addition, during installation, the flanges cannot be quickly installed together, and the installation process is too cumbersome, usually requiring two people to install, one to hold the flange in position and the other to tighten the bolts, increasing labor costs and reducing installation efficiency.

[0004] Therefore, it is necessary to provide a flange structure with good sealing to solve the above problems. SUMMARY

[0005] The utility model discloses a flange structure with good sealing to solve the problem of flange vibration during work, long-term vibration, air and rainwater erosion of the rubber pad at the flange connection, deviation and corrosion of the rubber pad between the flange plates, affecting the sealing performance of the flange, and the flanges cannot be quickly installed together during installation, the installation process is too cumbersome, usually requiring two people to install, one to hold the flange in position and the other to tighten the bolts, increasing labor costs and reducing installation efficiency.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a flange structure with good sealing, comprising a front disc, a rear disc is arranged behind the front disc, a protective clamp is installed on the outer surface of the front disc and the rear disc, and an alarm box is installed on the lower surface of the protective clamp.

[0007] Screw holes are formed in the front disc, there are eight screw holes, which are distributed symmetrically around the center of the front disc, the screw holes penetrate the front disc, fixed bolts are arranged in the screw holes, a front sealing ring is installed on the outer surface of the front disc, and there are three front sealing rings, which are evenly distributed at equal intervals on the outer surface of the front disc.

[0008] The front disc rear surface is provided with positioning blocks, the front disc rear surface center position is fixedly provided with a front disc convex ring, and the front disc convex ring is provided with a sealing ring;

[0009] The rear disc front surface center position is provided with a rear disc groove, the rear disc groove is provided with an inner sealing ring, the rear disc groove is fixedly provided with a limiting ring, and the limiting ring and the rear disc form a sealing ring cavity.

[0010] Preferably, the rear disc outer surface is provided with three rear sealing rings, the rear disc is provided with bolt holes, the bolt holes are eight, are concentrically and symmetrically distributed on the rear disc, the bolt holes penetrate the rear disc, the rear disc is provided with butt joints, and the butt joints correspond to the positioning blocks.

[0011] Preferably, the positioning blocks are half-moon type, the positioning blocks are eight, are located between the bolt holes, the lower ends of the positioning blocks and the centers of the bolt holes are in the same vertical plane, and the sizes of the positioning blocks are slightly smaller than the butt joints.

[0012] Preferably, the sealing ring grooves are six, are equidistantly and uniformly distributed on the inner side surfaces of the protective clamps and correspond to the front sealing rings and the rear sealing rings.

[0013] Preferably, the alarm box is provided with a water inlet cavity, the water inlet cavity is provided with a water immersion sensor, the front surface of the alarm box is provided with a buzzer, the other side surface of the alarm box is provided with an inspection opening, the inspection opening is provided with a sealing strip, and the sealing strip is slidably provided with a sliding cover plate.

[0014] Preferably, the device buzzer is electrically connected with the water immersion sensor through a wire.

[0015] The technical effects and advantages of the utility model are as follows:

[0016] 1. The protective clamp, the sealing ring and the limiting ring provided in the utility model can protect the sealing ring during use, reduce the erosion of air and rainwater on the sealing ring, can alarm in case of leakage, can make workers discover the abnormality in the first time and take corresponding countermeasures, the limiting ring can limit the sealing ring between the front disc and the rear disc, can prevent displacement caused by vibration, can increase the sealing property of the device by protecting the sealing ring and limiting the sealing ring, can solve the problems that long-time vibration and air and rainwater erode the rubber pad of the flange connection, cause the rubber pad between the flange discs to deviate and corrode, and affect the sealing property of the flange.

[0017] 2. The positioning block and the butt joint hole provided in the utility model, through the positioning block of half-moon type design, in the installation process, the positioning block is clamped in the butt joint hole, when the lower end of the positioning block abuts against the lower end of the butt joint hole, at this time the bolt holes between the flanges just correspond to each other, the function of quick positioning is realized, at this time the fixed bolt is passed through the bolt hole, fastening can be realized, this process can be operated by one person only, the flange is limited at the same time of realizing quick positioning installation, further solve the problem of sealing ring deviation caused by vibration, solve the problem that the flanges cannot be quickly installed together in the traditional installation process, increase the labor cost, reduce the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic view of the flange structure with good sealing property of the utility model;

[0019] Figure 2 It is split view of the flange structure with good sealing property of the utility model;

[0020] Figure 3 It is front disc rear view of the flange structure with good sealing property of the utility model;

[0021] Figure 4 It is rear disc schematic view of the flange structure with good sealing property of the utility model;

[0022] Figure 5 It is protective clamp schematic view of the flange structure with good sealing property of the utility model;

[0023] In the drawing: 1, front disc;2, rear disc;3, protective clamp;4, fixed bolt;5, alarm box;6, bolt hole;7, front sealing ring;8, rear sealing ring;9, positioning block;10, front disc convex ring;11, sealing ring;12, butt joint hole;13, inner sealing ring;14, rear disc recess;15, limiting ring;16, sealing ring cavity;17, sealing ring groove;18, buzzer;19, water inlet cavity;20, water immersion sensor;21, sealing strip;22, access hole;23, sliding cover plate. DETAILED DESCRIPTION

[0024] The utility model provides a kind of flange structure with good sealing property as shown in Figures 1-5 Including front disc 1, rear disc 2 is arranged in front of front disc 1, protective clamp 3 is installed on the outer surface of front disc 1 and rear disc 2, alarm box 5 is installed on the lower surface of protective clamp 3;

[0025] The front disc 1 is provided with bolt holes 6, eight of which are arranged in a concentric manner on the front disc 1, the bolt holes 6 penetrate the front disc 1, and fixing bolts 4 are arranged in the bolt holes 6; the outer surface of the front disc 1 is provided with front sealing rings 7, three of which are arranged in an equidistant and uniform manner on the outer surface of the front disc 1; and the front sealing rings 7 can effectively reduce the contact of the sealing ring 11 with air and rainwater, and provide the first sealing protection for the device.

[0026] The rear surface of the front disc 1 is provided with positioning blocks 9, and the center of the rear surface of the front disc 1 is fixedly provided with a front disc convex ring 10, and the sealing ring 11 is arranged in the front disc convex ring 10.

[0027] The front surface of the rear disc 2 is provided with a rear disc concave groove 14 in the center, and the rear disc concave groove 14 is arranged with an inner sealing ring 13; in the installation process, as the front disc 1 and the rear disc 2 are gradually fastened, the front disc convex ring 10 will abut against the inner sealing ring 13, thereby providing the second sealing protection for the device; the rear disc concave groove 14 is fixedly provided with a limiting ring 15, which limits the sealing ring 11, so as to solve the problem of the deviation of the sealing ring 11 caused by vibration; the limiting ring 15 and the rear disc 2 form a sealing ring cavity 16, and as the front disc 1 and the rear disc 2 are gradually fastened, the sealing ring 11 will enter the sealing ring cavity 16, thereby providing the third sealing protection for the device.

[0028] Further, the rear disc 2 is provided with rear sealing rings 8 on the outer surface, three of which are arranged in an equidistant and uniform manner on the outer surface of the rear disc 2; the rear disc 2 is provided with bolt holes 6, eight of which are arranged in a concentric manner on the rear disc 2, the bolt holes 6 penetrate the rear disc 2, and the rear disc 2 is provided with butt joints 12 corresponding to the positioning blocks 9.

[0029] Further, the positioning blocks 9 are designed in a half-moon shape, and there are eight of them, which are respectively arranged between the bolt holes 6; the lower end of the positioning block 9 is in the same vertical plane as the center of the bolt hole 6, and when the lower end of the positioning block 9 abuts against the lower end of the butt joint 12, the bolt holes 6 on the front disc 1 and the rear disc 2 are just opposite to each other, thereby achieving the function of rapid positioning; the size of the positioning block 9 is slightly smaller than that of the butt joint 12, which is beneficial to the fine adjustment of the positions of the front disc 1 and the rear disc 2, because the diagonal method is used to tighten the fixing bolts 4 in the installation process.

[0030] Further, the inner surface of the protective clamp 3 is provided with sealing ring grooves 17, six of which are arranged in an equidistant and uniform manner on the inner surface of the protective clamp 3 and correspond to the front sealing rings 7 and the rear sealing rings 8.

[0031] Furthermore, the alarm box 5 has a water inlet chamber 19 inside, and a water immersion sensor 20 is installed in the water inlet chamber 19. The water immersion sensor 20 is a self-powered type and does not require an external power supply. A buzzer 18 is installed on the front surface of the alarm box 5. An inspection port 22 is opened on the other side surface of the alarm box 5. The inspection port 22 is used for maintenance and upkeep of the water immersion sensor 20. A sealing strip 21 is installed on the inspection port 22, and a sliding cover 23 is slidably installed on the sealing strip 21.

[0032] Furthermore, the device buzzer 18 is electrically connected to the immersion sensor 20 via a wire.

[0033] During use, the protective clamp 3 protects the sealing ring 11, reducing the erosion of the sealing ring 11 by air and rainwater. It also serves as an alarm for leaks. In the event of a leak, liquid drips from the inside of the protective clamp 3 into the water inlet chamber 19, triggering the immersion sensor 20 and causing the buzzer 18 to sound an alarm. This allows personnel to detect the anomaly immediately and take appropriate countermeasures. The limiting ring 15 firmly restrains the sealing ring 11 between the front plate 1 and the rear plate 2, preventing displacement caused by vibration. By protecting and limiting the sealing ring 11, the sealing performance of the device is increased, solving the problem of long-term vibration and the erosion of the rubber gasket at the flange connection by air and rainwater, which could lead to the rubber gasket between the flanges becoming damaged. The phenomena of displacement and corrosion affect the sealing performance of the flange. During use, the crescent-shaped positioning block 9 is used. During installation, the positioning block 9 is locked in the mating hole 12. When the lower end of the positioning block 9 abuts against the lower end of the mating hole 12, the bolt holes 6 of the front plate 1 and the rear plate 2 are exactly aligned, realizing the function of quick positioning. At this time, the fixing bolt 4 is passed through the bolt hole 6 to achieve tightening. This process can be operated by only one person. While realizing quick positioning and installation, it also limits the flange and further solves the problem of displacement of the sealing ring 11 caused by vibration. It solves the problem that the flange cannot be quickly installed together in the traditional installation process, which increases labor costs and reduces installation efficiency.

Claims

1. A flange structure with good sealing performance, comprising a front plate (1), characterized in that: A rear plate (2) is installed behind the front plate (1). Protective clamps (3) are fitted on the outer surfaces of the front plate (1) and the rear plate (2). An alarm box (5) is installed on the lower surface of the protective clamps (3). The front disc (1) has eight bolt holes (6) symmetrically distributed in a circle on the front disc (1). The bolt holes (6) penetrate the front disc (1). Fixing bolts (4) are installed in the bolt holes (6). The front sealing rings (7) are installed on the outer surface of the front disc (1). There are three front sealing rings (7) equidistantly distributed on the outer surface of the front disc (1). A positioning block (9) is installed on the rear surface of the front disc (1). There are multiple positioning blocks (9). A front disc convex ring (10) is fixedly installed at the center position of the rear surface of the front disc (1). A sealing ring (11) is installed inside the front disc convex ring (10). The rear disc (2) has a rear disc groove (14) at the center of its front surface. An inner sealing ring (13) is installed in the rear disc groove (14). A limiting ring (15) is fixedly installed in the rear disc groove (14). A sealing ring cavity (16) is formed between the limiting ring (15) and the rear disc (2).

2. The flange structure with good sealing performance according to claim 1, characterized in that: The rear disc (2) is equipped with a rear sealing ring (8). There are three rear sealing rings (8), which are evenly distributed at equal intervals on the outer surface of the rear disc (2). There are eight bolt holes (6) on the rear disc (2), which are symmetrically distributed in a circle on the rear disc (2). The bolt holes (6) penetrate the rear disc (2). There are mating holes (12) on the rear disc (2), which correspond to the positioning block (9).

3. The flange structure with good sealing performance according to claim 2, characterized in that: The positioning block (9) is a crescent-shaped design. There are eight positioning blocks (9), which are located between the bolt holes (6). The lower end of the positioning block (9) and the center of the bolt hole (6) are on the same vertical plane. The size of the positioning block (9) is slightly smaller than that of the mating hole (12).

4. The flange structure with good sealing performance according to claim 3, characterized in that: The inner surface of the protective clamp (3) is provided with a sealing ring groove (17). There are six sealing ring grooves (17), which are evenly distributed at equal intervals on the inner surface of the protective clamp (3) and correspond to the front sealing ring (7) and the rear sealing ring (8).

5. A flange structure with good sealing performance according to claim 4, characterized in that: The alarm box (5) has a water inlet cavity (19) inside, and a water immersion sensor (20) is installed in the water inlet cavity (19). A buzzer (18) is installed on the front surface of the alarm box (5). An inspection port (22) is opened on the other side surface of the alarm box (5). A sealing strip (21) is installed on the inspection port (22), and a sliding cover plate (23) is slidably installed on the sealing strip (21).

6. The flange structure with good sealing performance according to claim 5, characterized in that: The buzzer (18) is electrically connected to the immersion sensor (20) via a wire.

Images