Double-rubber-ring quick-connection socket steel pipe structure

Abstract

The utility model discloses a double-rubber-ring quick connection socket steel pipe structure, which belongs to the technical field of steel pipe connection and comprises a socket and a spigot which are arranged at two ends of a steel pipe, the front end of the socket is provided with a flaring, the rear end of the socket is identical to the spigot in caliber, the front end of the flaring is provided with a fastening port, and fasteners are symmetrically arranged on the fastening port. A first rubber ring groove is formed in the connecting position of the bellmouth and the flaring, a second rubber ring groove is formed in the middle of the flaring, rubber rings are arranged in the first rubber ring groove and the second rubber ring groove, a plurality of guide grooves are formed in the inner wall of the flaring, and a plurality of guide strips are arranged on the outer wall of the inserting opening. The annular rubber ring is arranged at the joint of the flaring and the bellmouth and matched with the rubber strip at the front end of the spigot, so that the joint of the spigot and the bellmouth is sealed; and meanwhile, the annular rubber ring is arranged in the middle of the flaring, so that a second sealing effect is achieved for connection between the insertion opening and the bell mouth while the guide strip is sealed inside, and tight connection between the insertion opening and the bell mouth is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe connecting technical field especially a double rubber ring quick -welding socket steel pipe structure. BACKGROUND

[0002] Now the connecting mode of steel pipe generally adopts the connecting mode of welding, but the construction difficulty of welding is big, and the operation level of welder is lower, and the incorrect welding process parameter or operation process will lead to the welding defect. Moreover, the steel pipe adopts the welding mode, can damage the anticorrosive layer of inner wall, easily makes the joint part appear rust leak, greatly reduces the service life of pipeline.

[0003] In view of the defect of steel pipe welding connection, now the steel pipe socket outer mouth uses rubber ring (ductile cast iron pipe has used for several dozens of years), completely satisfies the pipeline technical requirement, but single rubber ring is easy to cause water leakage or air leakage due to sealing not strictly, and the connection is also not firm.

[0004] Based on the above problem, a double rubber ring quick -welding socket steel pipe structure is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a double rubber ring quick -welding socket steel pipe structure to solve the problem in the background art.

[0006] To achieve the above object, the utility model provides a double rubber ring quick -welding socket steel pipe structure, including the socket and the spigot of being arranged at the both ends of steel pipe, the front end of socket is set as the flared mouth, the rear end of socket is same with the caliber of spigot, the front end of flared mouth is provided with the fastening mouth, the fastening mouth is provided with the fastener symmetrically, the junction of socket and flared mouth is provided with annular first rubber ring groove, the middle part of flared mouth is provided with annular second rubber ring groove, the first rubber ring groove and second rubber ring groove are provided with rubber ring in, the inner wall of flared mouth is provided with a plurality of guide grooves, the outer wall of spigot is provided with a plurality of guide strips compatible with guide groove.

[0007] Preferably, the first rubber ring groove and the second rubber ring groove are both along the circumferential direction of the socket, and the guide groove is along the axial direction of the flared mouth.

[0008] Preferably, the guide groove is provided on the right side of the first rubber ring groove, the guide groove and the second rubber ring groove are perpendicularly crossed, the guide groove is divided into left and right two sections by the rubber ring in the second rubber ring groove, and the length of the guide groove on the left side of the second rubber ring groove is greater than the length of the guide strip.

[0009] Preferably, the fastener includes a screw, a knob, and a fastening block. The inner wall of the fastening port has an inner cavity for the fastening block to move. The screw is rotatably connected to the inner wall of the fastening port by a thread. The upper end of the screw extends out of the upper wall of the fastening port and is connected to the knob. The lower end of the screw extends into the inner cavity and is connected to the fastening block.

[0010] Preferably, a rubber block is provided at the lower end of the fastening block.

[0011] Preferably, an adhesive strip is provided on the front side wall of the socket.

[0012] Therefore, the double rubber ring quick-connect socket steel pipe structure of this utility model, which adopts the above-mentioned structure, has the following beneficial effects:

[0013] (1) A flared part is provided at the socket position of one end of the steel pipe. An annular rubber ring groove is provided at the connection between the flared part and the socket. An annular rubber ring groove is provided in the middle of the flared part. Two independent sealing rubber rings are used and are respectively embedded in the two annular rubber ring grooves in the socket. Each rubber ring can be set with different shapes and different material properties to adapt to different working conditions. When the spigot is inserted into the socket, the double rubber rings are compressed to form a double sealing barrier, which effectively prevents fluid leakage.

[0014] (2) A guide groove is set on the flared end and a guide strip is set on the plug to ensure that the plug is accurately aligned with the flared end and to guide it to be inserted smoothly. Since the guide groove is divided into two sections by the rubber ring in the second rubber ring groove, the opening length of the guide groove on the left side of the second rubber ring groove is greater than the length of the guide strip. When the plug is inserted, the guide strip on the plug is finally located at the left end of the second rubber ring groove, and the rubber ring on the second rubber ring groove can seal the position of the guide strip to ensure a tight connection. At the same time, a rubber strip is set at the front end of the plug. After it is fully inserted, the rubber strip abuts against the rubber ring in the first rubber ring groove to achieve internal sealing.

[0015] (3) A fastening port is set at the front end of the flared end. The position of the socket is further fixed by bolts and fastening blocks to enhance the stability of the connection. At the same time, a rubber block is set at the connection between the fastening block and the socket to ensure that the socket is not damaged.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the socket and the flared opening in an embodiment of the present utility model;

[0019] Figure 3This is a cross-sectional view of the socket in an embodiment of the present utility model;

[0020] Figure 4 This is a cross-sectional view of the fastening opening in an embodiment of the present invention;

[0021] Figure label:

[0022] 1. Socket; 2. Flared opening; 3. Insert; 4. First rubber ring groove; 5. Second rubber ring groove; 6. Guide groove; 7. Guide strip; 8. Fastening port; 81. Fastener; 82. Knob; 83. Screw; 84. Fastening block; 85. Rubber block; 9. Rubber ring; 10. Rubber strip. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Example

[0026] like Figures 1-4 As shown, this utility model provides a double rubber ring quick-connect socket steel pipe structure, including a socket 1 and a spigot 3 set at both ends of the steel pipe. The front end of the socket 1 is set as a flared end 2, and the rear end of the socket 1 has the same diameter as the spigot 3. The diameter of the flared end 2 is slightly larger than the diameter of the socket 1, so as to realize the connection between the spigot 3 and the socket 1.

[0027] The front end of the flared opening 2 is provided with a fastening port 8, on which fasteners 81 are symmetrically arranged. Each fastener 81 includes a screw 83, a knob 82, and a fastening block 84. The inner wall of the fastening port 8 has an inner cavity for the fastening block 84 to move. The screw 83 is threadedly connected to the inner wall of the fastening port 8. This arrangement can be achieved by creating a threaded inner cavity for the screw 83 to rotate within the inner wall of the fastening port 8, or by other methods. The upper end of the screw 83 extends out of the upper wall of the fastening port 8 and connects to the knob 82. Rotation of the knob 82 controls the up-and-down movement of the screw 83 within the threaded inner cavity of the fastening port 8. The lower end of the screw 83 extends into the inner cavity and connects to the fastening block 84. The up-and-down movement of the screw 83 drives the up-and-down movement of the fastening block 84. A rubber block 85 is provided at the lower end of the fastening block 84. The rubber block 85 ensures that the fasteners 81 secure the insertion port 3 without damaging it.

[0028] An annular first rubber ring groove 4 is provided at the connection between the socket 1 and the flared end 2, and an annular second rubber ring groove 5 is provided in the middle of the flared end 2. Both the first rubber ring groove 4 and the second rubber ring groove 5 are provided with rubber rings 9. Two independent sealing rubber rings are used, which are respectively embedded in the two annular rubber ring grooves in the socket 1 and the flared end 2. Each rubber ring can be set with different shapes and different material properties to adapt to different working conditions. When the spigot 3 is inserted into the socket 1, the double rubber rings are compressed to form a double sealing barrier, effectively preventing fluid leakage.

[0029] Multiple guide grooves 6 are provided on the inner wall of the flared opening 2, and multiple guide strips 7 that are adapted to the guide grooves 6 are provided on the outer wall of the insertion opening 3. When the insertion opening 3 approaches the flared opening 2, the guide strips 7 will first contact the guide grooves 6 of the flared opening 2, guiding the insertion opening 3 to be inserted along the correct axial direction, avoiding deflection or jamming.

[0030] Both the first rubber ring groove 4 and the second rubber ring groove 5 are opened along the circumferential direction of the socket 1, and the guide groove 6 is opened along the axial direction of the flared opening 2. The guide groove 6 is located on the right side of the first rubber ring groove 4, and the guide groove 6 is perpendicularly intersecting the second rubber ring groove 5. The guide groove 6 is divided into left and right sections by the rubber ring in the second rubber ring groove 5. The length of the guide groove 6 located on the left side of the second rubber ring groove 5 is greater than the length of the guide bar 7. When the spigot 3 is connected to the socket 1, the guide bar 7 on the spigot 3 moves axially along the direction of the guide groove 6. When the guide bar 7 of the spigot 3 moves to the position of the second rubber ring groove 5, it is squeezed by the rubber ring. At this time, the spigot 3 is inserted with force. The setting of the guide bar 7 can also help the spigot 3 pass through the rubber ring at this point. When the spigot 3 is fully inserted into the socket 1, the rear end of the guide bar 7 is located to the left of the rubber ring on the second rubber ring groove 5. At this position, the rubber ring is no longer squeezed by the guide bar 7 and slowly recovers, which plays a sealing role for the guide bar 7. A rubber strip 10 is provided on the front side wall of the spigot 3. When the spigot 3 is fully inserted into the flared end, the front rubber strip 10 is tightly fitted with the rubber ring in the first rubber ring groove 4, ensuring the sealing of the steel pipe connection.

[0031] Therefore, this utility model adopts a double rubber ring quick-connect socket steel pipe structure with the above-mentioned structure. By setting an annular rubber ring at the connection between the flared end and the socket, and cooperating with the rubber strip at the front end of the spigot, the connection between the spigot and the socket is sealed. At the same time, an annular rubber ring is set in the middle of the flared end, which not only seals the guide strip inside, but also provides a second sealing effect for the connection between the spigot and the socket, so as to achieve a tight connection between the spigot and the socket. In addition, by setting the guide strip and the guide groove, it is ensured that the spigot is accurately aligned with the socket and guided to be inserted smoothly.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A double-rubber-ring quick-connect socket steel pipe structure, characterized in that: The device includes a socket and a spigot at both ends of a steel pipe. The front end of the socket is flared, and the rear end of the socket has the same diameter as the spigot. The front end of the flared end has a fastening port, and fasteners are symmetrically arranged on the fastening port. A first rubber ring groove is provided at the connection between the socket and the flared end, and a second rubber ring groove is provided in the middle of the flared end. Both the first and second rubber ring grooves are provided with rubber rings. Multiple guide grooves are provided on the inner wall of the flared end, and multiple guide strips that are adapted to the guide grooves are provided on the outer wall of the spigot.

2. The double rubber ring quick-connect socket steel pipe structure according to claim 1, characterized in that: Both the first and second rubber ring grooves are opened along the circumferential direction of the socket, and the guide groove is opened along the axial direction of the flared opening.

3. The double rubber ring quick-connect socket steel pipe structure according to claim 2, characterized in that: The guide groove is located on the right side of the first rubber ring groove. The guide groove is perpendicularly intersecting the second rubber ring groove. The guide groove is divided into left and right sections by the rubber ring in the second rubber ring groove. The opening length of the guide groove located on the left side of the second rubber ring groove is greater than the length of the guide strip.

4. The double rubber ring quick-connect socket steel pipe structure according to claim 1, characterized in that: The fastener includes a screw, a knob, and a fastening block. The inner wall of the fastening port has an inner cavity for the fastening block to move. The screw is rotatably connected to the inner wall of the fastening port by a thread. The upper end of the screw extends out of the upper wall of the fastening port and is connected to the knob. The lower end of the screw extends into the inner cavity and is connected to the fastening block.

5. The double rubber ring quick-connect socket steel pipe structure according to claim 4, characterized in that: A rubber block is provided at the lower end of the fastening block.

6. The double rubber ring quick-connect socket steel pipe structure according to claim 1, characterized in that: An adhesive strip is provided on the front side wall of the socket.

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