Protective sleeve for bell and spigot of nodular cast iron pipe

Abstract

The utility model discloses a nodular cast iron pipe bell and spigot protective sleeve which comprises an outer layer rubber sleeve, a connecting rubber belt and an inner layer rubber sleeve, the outer layer rubber sleeve, the connecting rubber belt and the inner layer rubber sleeve are all made of rubber materials, and the outer layer rubber sleeve and the inner layer rubber sleeve are both arranged to be of a tubular rotary body structure. The outer-layer rubber sleeve, the connecting adhesive tape and the inner-layer rubber sleeve are coaxially arranged, the connecting adhesive tape is of a circular ring structure and is connected to one end of the outer-layer rubber sleeve and one end of the inner-layer rubber sleeve, and a plurality of annular folding grooves are formed in the connecting adhesive tape in the radial direction; the protective sleeve made of the rubber material is elastically sleeved on the bell and spigot at the end part of the pipe body through the outer-layer rubber sleeve, so that wrapping protection is realized, the installation is convenient and fast, the matching is tight under the action of tensile force, the falling is not easy to occur, and the damage caused by collision between the bell and spigot and an external object is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipe socket protection technology, specifically to a ductile iron pipe socket protection sleeve. Background Technology

[0002] For a good seal, the socket and spigot of a pipe must have a good mating surface. However, during transportation or production, the socket and spigot are prone to collisions with external objects, which can cause scratches and damage to the socket and spigot, thus affecting the connection and sealing performance after installation.

[0003] Existing anti-collision measures generally involve using bundled straw ropes and / or wooden mats for spacing and protection. However, the installation process, especially the bundling of straw ropes, is inconvenient and aesthetically unappealing. Furthermore, the straw ropes and mats are prone to slipping and shifting, resulting in poor cushioning and inadequate protection. Finally, on-site collection and recycling are also inconvenient.

[0004] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content

[0005] To address the aforementioned technical deficiencies, the present invention provides a protective sleeve for ductile iron pipe sockets, comprising an outer rubber sleeve, a connecting tape, and an inner rubber sleeve. The outer rubber sleeve, the connecting tape, and the inner rubber sleeve are all made of rubber. Both the outer and inner rubber sleeves are tubular rotating structures. The outer rubber sleeve, the connecting tape, and the inner rubber sleeve are coaxially arranged. The connecting tape is a ring structure connected to one end of the outer and inner rubber sleeves. The connecting tape has several annular folded grooves radially arranged on it.

[0006] Preferably, the inner wall of the outer rubber sleeve is provided with a plurality of anti-slip ridges, the anti-slip ridges are configured as annular, and the anti-slip ridges are coaxially arranged with the outer rubber sleeve.

[0007] Preferably, the inner sleeve includes a first inner sleeve segment, a second inner sleeve segment, and a third inner sleeve segment, which are arranged sequentially in a direction away from the connecting tape. The first inner sleeve segment and the third inner sleeve segment are both cylindrical, and the cross-sectional diameter of the first inner sleeve segment is larger than that of the third inner sleeve segment. The second inner sleeve segment is a trumpet-shaped structure, and the cross-sectional diameter of the second inner sleeve segment gradually decreases from the first inner sleeve segment to the third inner sleeve segment.

[0008] Preferably, the third inner sleeve section is provided with a pull strap, the pull strap is configured in a cross shape, and all four ends of the pull strap are fixedly connected to the third inner sleeve section.

[0009] Preferably, the ductile iron pipe socket protective sleeve further includes an inner frame, which includes an outer support frame and an inner support frame. The outer support frame is embedded in the connection position between the outer rubber sleeve and the connecting tape, and the inner support frame is embedded in the connection position between the inner rubber sleeve and the connecting tape.

[0010] Preferably, the connecting tape includes an outer connecting ring, an inner connecting ring, and an extension section. The outer connecting ring is connected to the outer rubber sleeve, the inner connecting ring is connected to the inner rubber sleeve, and the outer connecting ring and the inner connecting ring are connected through the extension section. All the folding grooves are provided on the extension section.

[0011] Preferably, the outer support frame includes two symmetrically arranged outer arc-shaped plates, each extending circumferentially with the axis of the outer rubber sleeve as its center. The outer arc-shaped plates are embedded in the outer rubber sleeve. A first connecting plate is also vertically fixed to the outer arc-shaped plates. The first connecting plate is radially arranged with the axis of the outer rubber sleeve and is embedded in the outer connecting ring. The first connecting plate extends along the extending direction of the outer arc-shaped plates. A gap is provided at the ends of the two outer arc-shaped plates, and the gap is filled with rubber.

[0012] Preferably, the inner support frame includes a plurality of inner arc-shaped plates, each of which is evenly distributed in a ring around the axis of the inner rubber sleeve. A second connecting plate is vertically connected to the inner arc-shaped plate, and the second connecting plate is radially arranged around the axis of the inner rubber sleeve. The inner arc-shaped plates are embedded in the inner rubber sleeve, and the second connecting plate is embedded in the inner connecting ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the protective sleeve made of rubber material is elastically fitted onto the socket of the pipe end by the outer rubber sleeve to achieve wrapping protection. It is convenient and quick to install, and under the action of tension, it fits tightly and is not easy to fall off, effectively avoiding damage to the socket from collision with external objects. Attached Figure Description

[0014] Figure 1 This is a structural cross-sectional view of Embodiment 1 of the ductile iron pipe socket protective sleeve;

[0015] Figure 2 This is a front view of the structure of Embodiment 1 of the ductile iron pipe socket protective sleeve;

[0016] Figure 3 A partial structural view of Embodiment 2 of the protective sleeve for the ductile iron pipe socket;

[0017] Figure 4 This is a schematic diagram of the embedded frame's structure.

[0018] The numbers in the image represent:

[0019] 1-Outer rubber sleeve; 2-Connecting tape; 3-Inner rubber sleeve; 4-Tear band; 5-Outer support frame; 6-Inner support frame; 11-Anti-slip ridge; 21-Folding groove; 22-Outer connecting ring; 23-Inner connecting ring; 24-Extension section; 31-First inner sleeve section; 32-Second inner sleeve section; 33-Third inner sleeve section; 51-Outer arc plate; 52-First connecting plate; 61-Inner arc plate; 62-Second connecting plate. Detailed Implementation

[0020] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] like Figure 1 and Figure 2 As shown, Figure 1 This is a structural cross-sectional view of Embodiment 1 of the ductile iron pipe socket protective sleeve; Figure 2 This is a front view of the structure of Embodiment 1 of the ductile iron pipe socket protective sleeve.

[0023] The ductile iron pipe socket protective sleeve of this utility model includes an outer rubber sleeve 1, a connecting tape 2, and an inner rubber sleeve 3. The outer rubber sleeve 1, the connecting tape 2, and the inner rubber sleeve 3 are all integrally molded from rubber material. The outer rubber sleeve 1 and the inner rubber sleeve 3 are both configured as tubular rotating structures. The outer rubber sleeve 1, the connecting tape 2, and the inner rubber sleeve 3 are coaxially arranged. The connecting tape 2 is configured as a ring structure connected to one end of the outer rubber sleeve 1 and the inner rubber sleeve 3, thereby forming an annular protective groove. The inner wall of the pipe is fitted with the inner rubber sleeve 3, and the outer wall of the pipe is fitted with the outer rubber sleeve 1, thereby placing the socket in the protective groove to achieve the wrapping and protection of the socket. The connecting tape 2 is radially provided with several annular folding grooves 21, thereby improving the extensibility of the connecting tape 2 and making this utility model applicable to the sockets of pipes with different inner diameters.

[0024] Generally, the outer rubber sleeve 1, the connecting tape 2, and the inner rubber sleeve 3 are all made of SBR rubber, which can provide better anti-aging and high-temperature resistance.

[0025] Preferably, the inner wall of the outer rubber sleeve 1 is provided with a plurality of anti-slip ridges 11. The anti-slip ridges 11 are circular and are coaxially arranged with the outer rubber sleeve 1. The anti-slip ridges 11 fit against the outer wall of the tube to improve the static friction between the outer rubber sleeve 1 and the outer wall of the tube, ensuring the stability of the outer rubber sleeve 1 on the outer wall of the tube. At the same time, the tube socket is generally provided with a flange structure. The anti-slip ridges 11 and the flange structure will engage, thereby further fixing the position of the outer rubber sleeve 1 on the outer wall of the tube and preventing the protective sleeve from falling off.

[0026] Preferably, the inner sleeve 3 includes a first inner sleeve section 31, a second inner sleeve section 32, and a third inner sleeve section 33, arranged sequentially away from the connecting tape 2. Both the first inner sleeve section 31 and the third inner sleeve section 33 are cylindrical, with the cross-sectional diameter of the first inner sleeve section 31 being larger than that of the third inner sleeve section 33. The second inner sleeve section 32 is flared, with its cross-sectional diameter gradually decreasing from the first inner sleeve section 31 to the third inner sleeve section 33. Since the inner cavity at the pipe socket is generally flared for easy connection, the structure of the inner sleeve 3 further facilitates its fit and fixation to the inner wall of the pipe.

[0027] Preferably, the third inner sleeve segment 33 is provided with a pull strap 4, which is cross-shaped, and all four ends of the pull strap 4 are fixedly connected to the third inner sleeve segment 33. During the installation process, after the outer rubber sleeve 1 is put on the outside of the tube body, the inner rubber sleeve 3 can be quickly inserted into the tube body by grasping the pull strap 4 and inserting it into the tube body, and the connecting tape 2 can be quickly stretched to a suitable state. When removing the protective sleeve, the pull strap 4 can be grasped and pulled out of the tube body, so that the entire protective sleeve can be quickly pulled off.

[0028] This utility model features a protective sleeve made of rubber material, which is elastically fitted onto the socket at the end of the pipe body by the outer rubber sleeve 1, thus achieving wrapping protection. It is convenient and quick to install, and under the action of tension, it fits tightly and is not easy to fall off, effectively avoiding damage to the socket from collisions with external objects.

[0029] Example 2

[0030] The ductile iron pipe socket protective sleeve of this utility model further includes an inner frame, which comprises an outer support frame 5 and an inner support frame 6. The outer support frame 5 is embedded in the connection position between the outer rubber sleeve 1 and the connecting tape 2, and the inner support frame 6 is embedded in the connection position between the inner rubber sleeve 3 and the connecting tape 2. The outer support frame 5 and the inner support frame 6 can improve the connection strength between the connecting tape 2 and the outer rubber sleeve 1 and the inner rubber sleeve 3, and also improve the overall plastic structure of the protective sleeve.

[0031] like Figure 3 and Figure 4 As shown, Figure 3 A partial structural view of Embodiment 2 of the protective sleeve for the ductile iron pipe socket; Figure 4 This is a schematic diagram of the embedded frame's structure.

[0032] Specifically, the connecting tape 2 includes an outer connecting ring 22, an inner connecting ring 23, and an extension section 24. The outer connecting ring 22 is connected to the outer rubber sleeve 1, the inner connecting ring 23 is connected to the inner rubber sleeve 3, the outer connecting ring 22 and the inner connecting ring 23 are connected through the extension section 24, and the folding grooves 21 are all provided on the extension section 24.

[0033] The outer support frame 5 includes two symmetrically arranged outer arc-shaped plates 51. The outer arc-shaped plates 51 extend circumferentially with the axis of the outer rubber sleeve 1 as the center. The outer arc-shaped plates 51 are embedded in the outer rubber sleeve 1. A first connecting plate 52 is also vertically fixed on the outer arc-shaped plates 51. The first connecting plate 52 is radially arranged with the axis of the outer rubber sleeve 1. The first connecting plate 52 is embedded in the outer connecting ring 22. The first connecting plate 52 extends along the extension direction of the outer arc-shaped plates 51. A gap is provided at the ends of the two outer arc-shaped plates 51. The gap is filled with rubber, thereby forming a connection structure in which the outer support frame 5 is embedded at the connection position of the outer rubber sleeve 1 and the connecting tape 2.

[0034] The outer support frame 5 with an L-shaped cross-section can be snapped and fixed on the outer circular surface of the pipe socket to form effective protection. At the same time, the two outer arc plates 51 can form a circle with a notch, which can maintain a relatively stable cylindrical structure before sleeve installation. Through the expansion and contraction of the rubber at the gap, the outer rubber sleeve 1 can be quickly sleeved on the outside of the socket to achieve rapid installation.

[0035] The inner support frame 6 includes several inner arc-shaped plates 61, each of which is evenly distributed in a ring around the axis of the inner rubber sleeve 3. A second connecting plate 62 is vertically connected to each inner arc-shaped plate 61. The second connecting plate 62 is radially arranged around the axis of the inner rubber sleeve 3, thereby forming an L-shaped structure. The inner arc-shaped plates 61 are embedded in the inner rubber sleeve 3, and the second connecting plate 62 is embedded in the inner connecting ring 23, thereby forming a connection structure in which the inner support frame 6 is embedded at the connection position between the inner rubber sleeve 3 and the connecting tape 2.

[0036] The inner support frame 6 with the L-shaped cross-section can be snapped and fixed on the inner circular surface of the pipe socket. Under the action of the elastic extension force of the folding groove 21, the inner support frame 6 and the outer support frame 5 are clamped and fixed at the end of the pipe socket, improving the stability of the overall structural shape after sleeve installation. The annularly distributed structure provides a large expansion gap between adjacent inner arc plates 61, thereby allowing the inner rubber sleeve 3 to adapt to different sizes of pipe inner diameter.

[0037] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A ductile iron pipe bell and spigot protector characterized by, The utility model provides a pipe protection sleeve, including outer layer rubber cover, connecting rubber band and inner layer rubber cover, all adopt rubber material quality, the outer layer rubber cover and inner layer rubber cover all are arranged as tubular gyre structure, the outer layer rubber cover, connecting rubber band and inner layer rubber cover are coaxial arrangement, connecting rubber band is arranged as circular ring structure and is connected in one end of outer layer rubber cover and inner layer rubber cover, connecting rubber band is provided with a plurality of annular folding groove radially.

2. The ductile iron pipe bell and spigot protector of claim 1 wherein, The outer layer rubber cover is provided with a plurality of anti-skid convex beads on the inner wall, the anti-skid convex beads are arranged in a circular ring type, and the anti-skid convex beads are coaxially arranged with the outer layer rubber cover.

3. The ductile iron pipe bell and spigot protector of claim 1 wherein, The inner layer rubber cover includes a first inner sleeve section, a second inner sleeve section, and a third inner sleeve section. The first inner sleeve section, the second inner sleeve section, and the third inner sleeve section are sequentially arranged in a direction away from the connecting rubber band. The first inner sleeve section and the third inner sleeve section are both arranged in a cylindrical shape. The cross-sectional diameter of the first inner sleeve section is larger than that of the third inner sleeve section. The second inner sleeve section is arranged in a horn barrel shape. The cross-sectional diameter of the second inner sleeve section gradually decreases from the first inner sleeve section to the third inner sleeve section.

4. The ductile iron pipe bell and spigot protector of claim 3 wherein, The third inner sleeve section is provided with a pulling belt. The pulling belt is arranged in a cross shape. The four ends of the pulling belt are fixedly connected to the third inner sleeve section.

5. The ductile iron pipe bell and spigot protector of claim 3 wherein, The ductile cast iron pipe socket protection sleeve further includes an embedded frame. The embedded frame includes an outer support frame and an inner support frame. The outer support frame is embedded at the connection position of the outer layer rubber cover and the connecting rubber band. The inner support frame is embedded at the connection position of the inner layer rubber cover and the connecting rubber band.

6. The ductile iron pipe bell and spigot protector of claim 5 wherein, The connecting rubber band includes an outer connecting ring, an inner connecting ring, and an extension section. The outer connecting ring is connected to the outer layer rubber cover. The inner connecting ring is connected to the inner layer rubber cover. The outer connecting ring and the inner connecting ring are connected through the extension section. The folding grooves are arranged on the extension section.

7. The ductile iron pipe bell and spigot protector of claim 6 wherein, The outer support frame includes two symmetrical outer arc-shaped plates. The outer arc-shaped plates extend along the circumferential direction with the axis of the outer layer rubber cover as the center. The outer arc-shaped plates are embedded in the outer layer rubber cover. First connecting plates are vertically fixed on the outer arc-shaped plates. The first connecting plates are radially arranged with the axis of the outer layer rubber cover. The first connecting plates are embedded in the outer connecting ring. The first connecting plates extend along the extension direction of the outer arc-shaped plates. The ends of the two outer arc-shaped plates are provided with gaps. The gaps are filled with rubber.

8. The ductile iron pipe bell and spigot protector of claim 6 wherein, The inner support frame includes a plurality of inner arc-shaped plates. The inner arc-shaped plates are annularly and uniformly distributed with the axis of the inner layer rubber cover as the center. Second connecting plates are vertically connected to the inner arc-shaped plates. The second connecting plates are radially arranged with the axis of the inner layer rubber cover. The inner arc-shaped plates are embedded in the inner layer rubber cover. The second connecting plates are embedded in the inner connecting ring.

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