Stable connection type corrugated pipe expansion joint

Abstract

The utility model relates to the technical field of corrugated pipe expansion joints, in particular to a stable connection type corrugated pipe expansion joint. The device comprises a corrugated pipe expansion joint and a connecting mechanism, the connecting mechanism comprises a first connecting disc, the first connecting disc is arranged at a port of the corrugated pipe expansion joint, a movable rotating groove is formed in the surface of one side of the first connecting disc in a semi-open mode, a connecting screw is connected to the inner side of the movable rotating groove through a bearing, and a gear is arranged on the outer side of the connecting screw; one end of the inner tooth block ring penetrates through the corrugated pipe expansion joint and is located on the outer side of the corrugated pipe expansion joint, an outer rotating ring is fixedly connected to the outer side of the inner tooth block ring, a connecting pipe is movably connected to the outer side of the corrugated pipe expansion joint, and a second connecting disc is arranged on the surface of the side, close to the first connecting disc, of the connecting pipe; one end of the connecting screw rod penetrates through the second connecting disc and is in threaded connection with the second connecting disc; on the premise of maintaining a high-stability mounting structure of multiple bolts, the disassembly and assembly time of the bolts can be optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to bellows expansion joint technical field especially is involved in a kind of stable connection type bellows expansion joint. BACKGROUND

[0002] Expansion joint is also called compensator or expansion joint by habit. It is composed of bellows, end pipe, support, flange, conduit and other accessories. Expansion joint is a flexible structure arranged on the vessel shell or pipeline to compensate additional stress caused by temperature difference and mechanical vibration.

[0003] The existing bellows expansion joint is usually installed by flange plate connection mode, a plurality of connecting bolts are provided on the flange plate, and the bolts need to be operated one by one during disassembly and assembly, which consumes a certain amount of time in use. Therefore, the stable connection type bellows expansion joint is provided. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings of the prior art, the stable connection type bellows expansion joint can optimize the disassembly and assembly time of the bolts under the premise of maintaining the high stability installation structure of multiple bolts. During the disassembly and assembly process of the bellows expansion joint, the outer rotating ring can drive a plurality of connecting screws to rotate at one time, so that the connection of the connecting screws is completed in batches, and the connection of the bellows expansion joint and the connecting pipe is more convenient.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a stable connection type bellows expansion joint, comprising a bellows expansion joint and a connecting mechanism, the connecting mechanism comprises a first connecting disc, the first connecting disc is arranged at the port of the bellows expansion joint, the first connecting disc, the first connecting disc is provided with a movable rotating groove in a half-opened manner on one side surface, a connecting screw is connected to the inner side of the movable rotating groove through a bearing, a gear is arranged on the outer side of the connecting screw, an inner tooth block ring is engaged with the outer side of the gear, one end of the inner tooth block ring penetrates the bellows expansion joint and is fixedly connected to the outer side of the bellows expansion joint through an outer rotating ring, a connecting pipe is movably connected to the outer side of the bellows expansion joint, a second connecting disc is arranged on one side surface of the connecting pipe close to the first connecting disc, and one end of the connecting screw penetrates the second connecting disc and is screw-connected with the second connecting disc.

[0006] As a preferred technical scheme of the utility model, a limiting assembly is arranged on the outer side of the bellows expansion joint, and the first connecting disc is arranged in a mirror image manner with the center point of the bellows expansion joint as the axis.

[0007] As a preferred technical scheme of the utility model, the outer side of the connecting screw is screw-connected with a limiting nut and a rubber gasket in a sleeved manner, the limiting nut is arranged on the outer side of the second connecting disc, and the rubber gasket is arranged between the second connecting disc and the first connecting disc.

[0008] As a preferred technical scheme of the utility model, the outer rotating ring is connected with a rubber anti-skid ring outside, and the rubber anti-skid ring and the outer rotating ring are adhesively connected.

[0009] As a preferred technical scheme of the utility model, the connecting screw rods are annularly distributed around the first connecting disc, and the number of the gear and the connecting screw rods is the same.

[0010] As a preferred technical scheme of the utility model, the utility model further comprises a positioning mechanism, the positioning mechanism comprises a positioning rotating block, the positioning rotating block is arranged inside the outer rotating ring, a positioning rotating groove is formed in the outside of the first connecting disc, the positioning rotating block is slidably connected to the inside of the positioning rotating groove, and a ball assembly is arranged at the connecting position of the positioning rotating block and the positioning rotating groove.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The connecting mechanism is arranged, the dismounting time of the bolt can be optimized under the premise of maintaining the high stability installation structure of the plurality of bolts, the outer rotating ring is used to drive a plurality of connecting screw rods to rotate together when the corrugated pipe expansion joint is dismounted, the connection of the connecting screw rods is completed in batches, the connection of the corrugated pipe expansion joint and the connecting pipe is more convenient, and the use feeling is improved.

[0013] 2. The positioning mechanism is arranged, the connection tightness between the outer rotating ring and the first connecting disc is improved, the stability during rotation is higher, the use of the connecting mechanism is not affected, and the use feeling is effectively improved. DRAWINGS

[0014] Figure 1 It is a front sectional view structural schematic view of the utility model;

[0015] Figure 2 It is a first connecting disc side surface structural schematic view of the utility model;

[0016] Figure 3 It is a Figure 1 enlarged structural schematic view of A in the utility model;

[0017] Figure 4 It is an enlarged structural schematic view of B in the utility model; Figure 3

[0018] Wherein: 1, corrugated pipe expansion joint; 2, first connecting disc; 3, connecting pipe; 21, movable rotating groove; 22, connecting screw rod; 23, gear; 24, inner tooth block ring; 25, outer rotating ring; 26, limiting nut; 27, rubber gasket; 28, positioning rotating block; 29, positioning rotating groove; 31, second connecting disc. DETAILED DESCRIPTION​

[0019] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model will be further described below in combination with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. The experimental methods in the following embodiments are conventional methods, and the materials, reagents, etc. used in the following embodiments can be obtained from commercial channels unless otherwise specified. Embodiment

[0020] As Figures 1-3 shown, the stable connection type bellows expansion joint comprises a bellows expansion joint 1 and a connecting mechanism, the connecting mechanism comprises a first connecting disc 2, the first connecting disc 2 is arranged at the port of the bellows expansion joint 1, the first connecting disc 2 is provided with a movable rotating groove 21 in a half-opened mode on one side surface, a connecting screw rod 22 is connected to the inner side of the movable rotating groove 21 through a bearing, a gear 23 is arranged on the outer side of the connecting screw rod 22, an inner tooth block ring 24 is connected to the outer side of the gear 23 in a meshing mode, the inner tooth block ring 24 penetrates through the bellows expansion joint 1 at one end and is fixedly connected to an outer rotating ring 25 outside the bellows expansion joint 1, a connecting pipe 3 is movably connected to the outer side of the bellows expansion joint 1, a second connecting disc 31 is arranged on the side surface of the connecting pipe 3 close to the first connecting disc 2, and one end of the connecting screw rod 22 penetrates through the second connecting disc 31 and is screw-connected with the second connecting disc 31; a limiting assembly is arranged on the outer side of the bellows expansion joint 1, and the first connecting disc 2 is arranged in a mirror image mode with the center point of the bellows expansion joint 1 as an axis;

[0021] Expansion joint is also called compensator or expansion joint. It is composed of bellows which is the main part of the work, end pipe, support, flange, guide pipe and other accessories. Expansion joint is a flexible structure arranged on the vessel shell or pipe to compensate the additional stress caused by temperature difference and mechanical vibration;

[0022] The existing bellows expansion joint is usually installed in the connecting mode of a flange plate, a plurality of connecting bolts are arranged on the flange plate, and the bolts need to be operated one by one during disassembly and assembly, which consumes a certain amount of time in use;

[0023] The first connecting disc 2 is aligned with the second connecting disc 31, and then the outer rotating ring 25 is rotated to drive the inner tooth block ring 24 to rotate, thereby driving the plurality of gears 23 to rotate, so that the connecting screw rod 22 is synchronously rotated, and then the connecting screw rod 22 is rotated into the second connecting disc 31 to connect the second connecting disc 31 with the first connecting disc 2, thereby ensuring that the corrugated pipe expansion joint 1 is connected with the connecting pipe 3; in addition, the limiting device can refer to the utility model with the publication number CN213299214U;

[0024] The dismounting time of the bolt can be optimized while maintaining the high stability installation structure of the plurality of bolts, and when the corrugated pipe expansion joint 1 is dismounted, the outer rotating ring 25 is used to drive a plurality of connecting screw rods 22 to rotate at one time, so that the connection of the connecting screw rod 22 is completed in batches, and the connection of the corrugated pipe expansion joint 1 with the connecting pipe 3 is more convenient.

[0025] In other embodiments, the embodiment discloses that, as shown in Figure 3 , the connecting screw rod 22 is threadedly connected with a limiting nut 26 and a rubber gasket 27 outside, the limiting nut 26 is located outside the second connecting disc 31, and the rubber gasket 27 is located between the second connecting disc 31 and the first connecting disc 2; through the design, the connection between the connecting screw rod 22 and the second connecting disc 31 is more compact, and the limiting nut 26 can limit the connecting screw rod 22, so that the connecting screw rod 22 is more stable.

[0026] In other embodiments, the embodiment discloses that, as shown in Figure 2 , the outer rotating ring 25 is connected with a rubber anti-skid ring outside, and the rubber anti-skid ring is adhesively connected with the outer rotating ring 25; through the design, the worker feels better when rotating the outer rotating ring 25, and the worker will not slip when applying force.

[0027] In other embodiments, the embodiment discloses that, as shown in Figure 2 , the connecting screw rod 22 is annularly distributed around the first connecting disc 2, and the number of the gears 23 is the same as that of the connecting screw rod 22; through the design, the number of connection points between the second connecting disc 31 and the first connecting disc 2 is more, thereby improving the connection stability. Embodiment

[0028] In other embodiments, the embodiment discloses that, as shown in Figure 1 , Figure 3 , Figure 4 , the positioning mechanism further comprises a positioning rotating block 28, the positioning rotating block 28 is arranged on the inner side of the outer rotating ring 25, a positioning rotating groove 29 is formed on the outer side of the first connecting disc 2, the positioning rotating block 28 is slidably connected to the inner side of the positioning rotating groove 29, and a ball assembly is arranged at the connection position of the positioning rotating block 28 and the positioning rotating groove 29;

[0029] When the outer rotating ring 25 rotates outside the first connecting disc 2, the positioning rotating block 28 synchronously slides inside the positioning rotating groove 29, the ball assembly reduces the friction between the two, and meanwhile maintains the connection between the two; the connection between the outer rotating ring 25 and the first connecting disc 2 is more compact, the stability when the outer rotating ring 25 rotates is stronger, meanwhile the use of the connecting mechanism is not affected, and the use feeling can be effectively improved.

[0030] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range possessed by the skilled in the art without departing from the purpose of the utility model.

Claims

1. A stable connection type bellows expansion joint comprising a bellows expansion joint (1) and a connection mechanism, characterized in that: The connecting mechanism comprises a first connecting disc (2) arranged at the port of the bellows expansion joint (1), the first connecting disc (2) is provided with a movable rotating groove (21) on one side surface in a semi-open manner, a connecting screw rod (22) is connected to the inner side of the movable rotating groove (21) through a bearing, a gear (23) is arranged on the outer side of the connecting screw rod (22), an inner tooth block ring (24) is connected to the outer side of the gear (23) in a meshing manner, the inner tooth block ring (24) penetrates the bellows expansion joint (1) from one end and is fixedly connected to an outer rotating ring (25) outside the bellows expansion joint (1), a connecting pipe (3) is movably connected to the outer side of the bellows expansion joint (1), a second connecting disc (31) is arranged on the side surface of the connecting pipe (3) close to the first connecting disc (2), and one end of the connecting screw rod (22) penetrates the second connecting disc (31) and is threadedly connected to the second connecting disc (31).

2. The stable connected bellows expansion joint of claim 1, wherein: The outer side of the bellows expansion joint (1) is provided with a limiting assembly, and the first connecting disc (2) is arranged in a mirror image mode with the center point of the bellows expansion joint (1) as the axis.

3. The stable connected bellows expansion joint of claim 1, wherein: The outer side of the connecting screw rod (22) is threadedly connected to a limiting nut (26) and a rubber gasket (27) in a sleeved manner, respectively, the limiting nut (26) is located outside the second connecting disc (31), and the rubber gasket (27) is located between the second connecting disc (31) and the first connecting disc (2).

4. The stable connected bellows expansion joint of claim 1, wherein: The outer side of the outer rotating ring (25) is connected to a rubber anti-skid ring, and the rubber anti-skid ring and the outer rotating ring (25) are connected in a sticking manner.

5. The stable connected bellows expansion joint of claim 1, wherein: The connecting screw rod (22) is arranged in a ring shape around the first connecting disc (2), and the number of the gear (23) is the same as that of the connecting screw rod (22).

6. The stable connected bellows expansion joint of claim 1, wherein: Further comprising a positioning mechanism, the positioning mechanism comprises a positioning rotating block (28) arranged inside the outer rotating ring (25), a positioning rotating groove (29) is arranged on the outer side of the first connecting disc (2), the positioning rotating block (28) is slidably connected to the inner side of the positioning rotating groove (29), and a ball assembly is arranged at the connection between the positioning rotating block (28) and the positioning rotating groove (29).

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