Clamp for connecting cast iron drain pipes

Abstract

The utility model provides a hoop for connecting cast iron drain pipes, which relates to the technical field of cast iron drain pipe connecting devices and is characterized in that a hoop body comprises a first steel ring, a second steel ring, a bolt, a cushion block and a nut; the distance between the two ends of the second steel ring is controlled through the bolt and the nut, and then the tightness degree of the clamp body is adjusted. Cushion blocks are arranged between the nuts and the two ends of the second steel ring and between the bolts and the two ends of the second steel ring respectively. The cushion block is arranged to be in a U shape, the bolt and the nut are prevented from shaking while the bolt and the nut are supported, and the anti-loosening purpose is achieved. A plurality of groups of parallel interfaces are arranged on the rubber ring and are made of an elastic material, so that hard contact is prevented from being generated and the rubber ring body is prevented from being damaged due to a buffering effect when the hoop body is fastened; meanwhile, after the clamp body is fastened, the first steel ring and the second steel ring can be supported by the elasticity of the connector, so that the bolt is always kept compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to cast iron drain pipe connecting device technical field, specifically, relate to a kind of clamp for cast iron drain pipe connection. BACKGROUND

[0002] Drain pipe mainly undertakes the task of rainwater, sewage, farmland drainage and other drainage, clamp is a kind of connecting device for connecting pipe fittings with grooves, valves and pipeline accessories, used between quick couplings to tighten clamp connection, generally with gasket, rubber, silicone and tetrafluoroethylene, with good performance, high sealing degree, easy installation.

[0003] Flexible clamp type centrifugal cast iron drain pipe is composed of four parts: socketless centrifugal cast iron pipe, socketless pipe fittings, special stainless steel clamp and rubber sealing ring. The end of the centrifugal cast iron pipe or fitting is inserted into the special rubber sealing ring, and the rubber sealing ring is locked with the special stainless steel clamp outside, to achieve the purpose of connection and water stop.

[0004] After searching, the Chinese utility model patent with application number "CN202022734590.4" discloses a flexible socket interface cast iron drain pipe anti-dropping clamp, which comprises a shell, a non-slip pad, a protective cotton, a first fixing block, a water pipe and an elastic sleeve. The outer wall of the shell is provided with an anti-rust shell, and the front surface of the anti-rust shell is provided with a first fixing bolt. The non-slip pad is arranged on the inner wall of the shell, and one side of the non-slip pad is provided with a second fixing bolt. The protective cotton is arranged on the upper surface of the shell, and the inside of the protective cotton is provided with a magic tape. The first fixing block is arranged on one side of the shell, and one side of the first fixing block is provided with a threaded shaft. The threaded shaft is provided with a second fixing block on one side. The water pipe is arranged inside the shell. The flexible socket interface cast iron drain pipe anti-dropping clamp can effectively prevent the clamp from falling off during use, so that the clamp can be stably placed on the water pipe.

[0005] The above-mentioned flexible socket interface cast iron drain pipe anti-dropping clamp can effectively prevent the clamp from falling off during use, so that the clamp can be stably placed on the water pipe. However, during use, the bolt is only adjusted by the nut, and when the bolt and the nut cannot maintain parallel, it is easy to produce shaking, which reduces the fastening force of the bolt and even causes failure.

[0006] In summary, there is an urgent need for a clamp for cast iron drain pipe connection to solve the above problems. UTILITY MODEL CONTENTS

[0007] In order to make up for the above shortcomings, the utility model provides a kind of clamp for cast iron drain pipe connection, to solve the existing cast iron drain pipe flexible connecting piece in the use process, bolt only rely on the adjustment of nut tightness, under the condition that bolt and nut cannot keep parallel, it is easy to produce shaking, leading to bolt fastening force reduction even failure and other problems.

[0008] The utility model is realized as follows:

[0009] A kind of clamp for cast iron drain pipe connection, including rubber ring and clamp body;The clamp body is fixedly installed on the outer surface of the rubber ring, to fasten rubber ring.

[0010] The rubber ring includes interface, rubber ring body and intermediate partition, the intermediate partition is arranged in the middle part of the rubber ring, and the rubber ring body is fixedly installed at both ends of the intermediate partition;The interface is arranged at both ends of the rubber ring and is fixedly installed on the outer surface of the rubber ring body;

[0011] The clamp body includes first steel ring, second steel ring, bolt, cushion block and nut;The second steel ring is arranged on the outer surface of the rubber ring, and both ends of the second steel ring extend to the outside of the rubber ring;One end of the first steel ring is fixedly connected with one end of the second steel ring, and is arranged as fixed end;The other end of the first steel ring is movably arranged on the outer surface of the rubber ring and is inserted between the second steel ring and the rubber ring, and is arranged as movable end;Both ends of the second steel ring and the fixed end of the first steel ring are fixedly connected by a plurality of bolts, the outer surface of the bolt is provided with external thread, and the nut is provided with internal thread;The external thread of the bolt is engaged with the internal thread of the nut, the distance between both ends of the second steel ring is controlled by the nut, and then the tightness of the clamp body is adjusted;

[0012] Preferably, the nut and one end of the second steel ring close to the fixed end of the first steel ring are provided with cushion block, and correspondingly, the bolt and one end of the second steel ring close to the movable end of the first steel ring are provided with cushion block.

[0013] Preferably, the cushion block close to the fixed end of the first steel ring is riveted with the first steel ring and the second steel ring close thereto, and the cushion block close to the movable end of the first steel ring is riveted with the second steel ring close thereto;The cushion block close to the fixed end of the first steel ring is welded with the nut.

[0014] Preferably, after the cushion block close to the fixed end of the first steel ring and the nut are welded, they are galvanized, and then riveted with the first steel ring and the second steel ring close thereto.

[0015] Preferably, the cushion block is arranged in U shape, and the length direction of the cushion block is parallel to the radial direction of the rubber ring.

[0016] Preferably, the interface is arranged in multiple groups and is made of elastic material.

[0017] Preferably, the gasket, the first steel ring and the second steel ring are provided with through grooves matched with the bolts.

[0018] The beneficial effects of the present application relative to the prior art are:

[0019] 1. The clamp for connecting cast iron drain pipes, by setting the clamp body comprising a first steel ring, a second steel ring, a bolt, a gasket and a nut, the distance between the two ends of the second steel ring is controlled by the bolt and the nut, and then the tightness of the clamp body is adjusted, the gasket is arranged between the nut and one end of the second steel ring close to the fixed end of the first steel ring, and correspondingly, the bolt is arranged between the second steel ring and one end close to the movable end of the first steel ring, the gasket is arranged in a U shape, and the limiting effect is generated while supporting the bolt and the nut, the bolt and the nut are prevented from shaking, and the purpose of anti-loosening is achieved.

[0020] 2. The clamp for connecting cast iron drain pipes, by setting multiple parallel interfaces on the rubber ring and using elastic material to prepare, the buffering effect is generated when the clamp body is fastened, hard contact is avoided, and the rubber ring body is prevented from being damaged, and after the clamp body is fastened, the elasticity of the interface can support the first steel ring and the second steel ring, so that the bolt is always kept tight.

[0021] 3. The clamp for connecting cast iron drain pipes, by setting the gasket close to the movable end of the first steel ring and the second steel ring close to it in riveting connection, the gasket close to the fixed end of the first steel ring and the nut are welded and then galvanized, and then the first steel ring and the second steel ring close to it are riveted, the fixation of the nut, the second steel ring and the gasket is ensured, the protective zinc layer on the gasket and the nut is prevented from being oxidized by high temperature welding, and then rust caused by welding is avoided, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0023] Figure 1 It is a three-dimensional structure schematic view of the clamp for connecting cast iron drain pipes.

[0024] Figure 2 It is a front view structural schematic drawing of the clamp for cast iron drain pipe connection of the utility model;

[0025] Figure 3 It is a top view structural schematic drawing of the clamp for cast iron drain pipe connection of the utility model;

[0026] Figure 4 It is a three-dimensional structural schematic drawing of the rubber ring in the clamp for cast iron drain pipe connection of the utility model.

[0027] In the drawing: 1, rubber ring; 11, interface; 12, rubber ring body; 13, intermediate partition; 2, clamp body; 21, first steel ring; 22, second steel ring; 23, bolt; 24, cushion block; 25, nut. DETAILED DESCRIPTION

[0028] First of all, it should be pointed out that in different described embodiments, the same components are provided with the same reference signs or the same component names, wherein the disclosure contained in the entire specification can be transferred to the same components with the same reference signs or the same component names in the meaning. The selected position description in the specification, for example, up, down, lateral, etc. also refers to the directly described and shown drawings and is transferred to the new position in the meaning when the position changes.

[0029] Example one:

[0030] Please refer to Figures 1-4 , the utility model provides a technical scheme:

[0031] A clamp for cast iron drain pipe connection, including rubber ring 1 and clamp body 2, as Figure 1 Shown, the clamp body 2 is fixedly installed on the outer surface of the rubber ring 1, to fasten rubber ring 1.

[0032] As Figure 4 Shown, the rubber ring 1 includes interface 11, rubber ring body 12 and intermediate partition 13, the intermediate partition 13 is arranged in the middle of the rubber ring 1, and the rubber ring body 12 is fixedly installed at both ends of the intermediate partition 13, the interface 11 is arranged at both ends of the rubber ring 1 and is fixedly installed on the outer surface of the rubber ring body 12.

[0033] The clamp body 2 includes first steel ring 21, second steel ring 22, bolt 23, cushion block 24 and nut 25, as Figure 3As shown in the figure, the second steel ring 22 is arranged on the outer surface of the rubber ring 1, and the two ends of the second steel ring 22 extend to the outside of the rubber ring 1; one end of the first steel ring 21 is fixedly connected with one end of the second steel ring 22, and is arranged as a fixed end; the other end of the first steel ring 21 is movably arranged on the outer surface of the rubber ring 1, and is inserted between the second steel ring 22 and the rubber ring 1, and is arranged as a movable end;

[0034] As shown in the figure, the two ends of the second steel ring 22 are fixedly connected with the fixed end of the first steel ring 21 through a plurality of bolts 23, the bolts 23 pass through the two ends of the second steel ring 22 and the fixed end of the first steel ring 21, and the outer surfaces of the bolts 23 are provided with external threads; the nuts 25 are provided with internal threads; the external threads of the bolts 23 are engaged with the internal threads of the nuts 25, the distance between the two ends of the second steel ring 22 is controlled by the nuts 25, and then the tightness of the clamp body 2 is adjusted; Figure 2 As shown in the figure, the nuts 25 and one end of the second steel ring 22 close to the fixed end of the first steel ring 21 are provided with a pad 24;

[0035] Figure 1 As shown in the figure, the bolts 23 and one end of the second steel ring 22 close to the movable end of the first steel ring 21 are provided with a pad 24;

[0036] As shown in the figure, the pad 24 is arranged in a U shape, and the length direction of the pad 24 is parallel to the radial direction of the rubber ring 1; the U-shaped pad 24 supports the bolts 23 and the nuts 25 at the same time, avoids the bolts 23 and the nuts 25 from shaking, and achieves the purpose of preventing loosening; Figure 1 Preferably, the pad 24 close to the fixed end of the first steel ring 21 is riveted to the first steel ring 21 and the second steel ring 22 close to it, and the pad 24 close to the movable end of the first steel ring 21 is riveted to the second steel ring 22 close to it; the pad 24 close to the fixed end of the first steel ring 21 is welded to the nut 25.

[0037] Figure 1 Preferably, after the pad 24 close to the fixed end of the first steel ring 21 is welded to the nut 25, it is galvanized, and then is riveted to the first steel ring 21 and the second steel ring 22 close to it.

[0038] As shown in the figure, the pad 24 is arranged in a U shape, and the length direction of the pad 24 is parallel to the radial direction of the rubber ring 1; the U-shaped pad 24 supports the bolts 23 and the nuts 25 at the same time, avoids the bolts 23 and the nuts 25 from shaking, and achieves the purpose of preventing loosening;

[0039] Preferably, the pad 24 close to the fixed end of the first steel ring 21 is riveted to the first steel ring 21 and the second steel ring 22 close to it, and the pad 24 close to the movable end of the first steel ring 21 is riveted to the second steel ring 22 close to it; the pad 24 close to the fixed end of the first steel ring 21 is welded to the nut 25.

[0040] As shown in the figure, the pad 24 is arranged in a U shape, and the length direction of the pad 24 is parallel to the radial direction of the rubber ring 1; the U-shaped pad 24 supports the bolts 23 and the nuts 25 at the same time, avoids the bolts 23 and the nuts 25 from shaking, and achieves the purpose of preventing loosening; Figure 4 ​​As shown, the interfaces 11 are arranged in groups and are made of elastic material, which can buffer when the clamping body 2 is fastened, avoiding hard contact and damage to the rubber ring body 12; at the same time, the elasticity of the interfaces 11 can support the first steel ring 21 and the second steel ring 22 after the clamping body 2 is fastened, so that the bolt 23 is always kept tight.

[0041] Preferably, the cushion block 24 is provided with a through slot, which cooperates with the bolt 23.

[0042] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0043] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A clamp for cast iron drain pipe connection comprising a rubber ring (1) and a clamp body (2); characterized in that, The clamp body (2) is fixedly installed on the outer surface of the rubber ring (1) to fasten the rubber ring (1); the clamp body (2) comprises a first steel ring (21), a second steel ring (22), a bolt (23), a pad (24) and a nut (25); the second steel ring (22) is arranged on the outer surface of the rubber ring (1), and the two ends of the second steel ring (22) extend to the outside of the rubber ring (1); one end of the first steel ring (21) is fixedly connected with one end of the second steel ring (22) and is arranged as a fixed end; the other end of the first steel ring (21) is movably arranged on the outer surface of the rubber ring (1) and is inserted into the second steel ring (22) and the rubber ring (1) and is arranged as a movable end.

2. A clamp for cast iron drain pipe connection according to claim 1, characterized in that, The rubber ring (1) comprises an interface (11), a rubber ring body (12) and an intermediate partition plate (13), the intermediate partition plate (13) is arranged in the middle of the rubber ring (1), and the rubber ring body (12) is fixedly installed at the two ends of the intermediate partition plate (13); the interface (11) is arranged at the two ends of the rubber ring (1) and is fixedly installed on the outer surface of the rubber ring body (12).

3. A clamp for cast iron drain pipe connection according to claim 2, characterized in that, The two ends of the second steel ring (22) are fixedly connected with the fixed end of the first steel ring (21) through a plurality of bolts (23), the bolts (23) pass through the two ends of the second steel ring (22) and the fixed end of the first steel ring (21), the outer surface of the bolts (23) is provided with external threads, the nut (25) is provided with internal threads, the external threads of the bolts (23) are engaged with the internal threads of the nut (25), the distance between the two ends of the second steel ring (22) is controlled by the nut (25), and then the tightness of the clamp body (2) is adjusted.

4. A clamp for cast iron drain pipe connection according to claim 3, characterized in that, The pad (24) is arranged between the nut (25) and one end of the second steel ring (22) close to the fixed end of the first steel ring (21), and correspondingly, the pad (24) is arranged between the bolt (23) and one end of the second steel ring (22) close to the movable end of the first steel ring (21).

5. A clamp for cast iron drain pipe connections according to claim 4, characterized in that The pad (24) is arranged in a U shape, and the length direction of the pad (24) is parallel to the radial direction of the rubber ring (1).

6. The coupling clamp for cast iron drain pipes according to claim 2, characterized in that, The interface (11) is arranged in multiple groups and is made of elastic material.

7. The coupling clamp for cast iron drain pipes according to claim 4, characterized in that, The pad (24) is provided with a through groove matched with the bolt (23).

8. The coupling clamp for cast iron drain pipes according to claim 5, characterized in that, The pad (24) close to the fixed end of the first steel ring (21) is riveted to the first steel ring (21) and the second steel ring (22) close thereto, and the pad (24) close to the movable end of the first steel ring (21) is riveted to the second steel ring (22) close thereto; the pad (24) close to the fixed end of the first steel ring (21) is welded to the nut (25).

9. A clamp for cast iron drain pipe connections according to claim 8, characterized in that After the pad (24) close to the fixed end of the first steel ring (21) is welded to the nut (25), the pad (24) is galvanized, and then the pad (24) is riveted to the first steel ring (21) and the second steel ring (22) close thereto.

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