Nodular cast iron pipe fitting with good sealing performance

Abstract

The utility model discloses a nodular cast iron pipe fitting with good sealing performance, which comprises a first pipe fitting and a second pipe fitting, one end of the first pipe fitting is fixedly connected with a convex ring, and one side of the inner side surface of the second pipe fitting, which is close to the convex ring, is provided with a groove. According to the nodular cast iron pipe fitting with the good sealing performance, through the arrangement of a convex ring, a groove, a sealing gasket, a first air bag, a connecting pipe and a second air bag, the convex ring is inserted into the groove, the sealing performance of the connecting position of the inner side face is enhanced, and meanwhile a port of the first pipe fitting and a port of the second pipe fitting are gradually drawn close to extrude the first air bag; gas in the first air bag is conveyed into the second air bag through the connecting pipe to fill the inner side face of the groove, the sealing performance of the connecting position of the convex ring and the inner side face of the groove is further enhanced, the sealing gasket makes contact with the first air bag, the sealing performance of the connecting position of the ports of the first air bag and the second air bag is enhanced, and the multiple sealing structures enable the nodular cast iron pipe fitting to be good in sealing effect. And the phenomena of gas leakage and liquid leakage are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to nodular cast iron pipe fitting technical field, especially nodular cast iron pipe fitting with good sealing performance. BACKGROUND

[0002] Nodular cast iron pipe is with magnesium or rare earth magnesium bonding agent nodularization agent is added in molten iron before pouring, makes graphite nodularization, stress concentration reduces, makes pipe material has big strength, high elongation, impact resistance, corrosion resistance, good sealing property and the like advantages pipe fitting.

[0003] Through the search, the China patent publication (announcement) No. CN213809415U discloses a kind of nodular cast iron pipe fittings of convenient disassembly, including nodular cast iron pipe fitting, the top and bottom of the one end of nodular cast iron pipe fitting are respectively provided with first chuck and second chuck, and the one end between first chuck and second chuck is hinged by hinge.By hinge, rotate first chuck, so that first chuck and second chuck wrap the one end of two nodular cast iron pipe fittings, by positioning mechanism, so that first chuck and second chuck are fixed, the quick disassembly of nodular cast iron pipe fitting is realized.

[0004] The above-mentioned patent can conveniently disassemble nodular cast iron pipe fitting, but the sealing property of nodular cast iron pipe fitting port and connecting place is poor, and leakage is prone to occur, so it is inconvenient to use, therefore a kind of nodular cast iron pipe fittings with good sealing performance is needed to solve the above-mentioned problems. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a kind of nodular cast iron pipe fittings with good sealing performance, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0007] A kind of nodular cast iron pipe fittings with good sealing performance, including first pipe fitting and second pipe fitting, the one end of the first pipe fitting is fixedly connected with convex ring, the inner side of the second pipe fitting is provided with recess near the side of convex ring;The one end of the first pipe fitting is fixedly connected with sealing pad near the side of convex ring, the one end of the second pipe fitting is fixedly connected with first air bag near the side of sealing pad, the outer surface of the first air bag is fixedly connected with connecting pipe, the one end of the connecting pipe is fixedly connected with second air bag, the inner side and outer surface of the first pipe fitting and second pipe fitting are all fixedly connected with anticorrosive coating.

[0008] In order to achieve the effect of increasing pipe fitting performance, as a kind of nodular cast iron pipe fittings with good sealing performance of the utility model, the first pipe fitting and the second pipe fitting are composed of inner layer, nodular cast iron layer and chrome plating layer.

[0009] In order to make the effect of strengthening the structure strength of the pipe joint, as a kind of ductile cast iron pipe with good sealing performance, the outer surface of the first pipe is fixedly connected with a first reinforcing ring, and the outer surface of the second pipe is fixedly connected with a second reinforcing ring.

[0010] In order to avoid the rotation of the pipe joint, as a kind of ductile cast iron pipe with good sealing performance, the outer surface of the first reinforcing ring is fixedly connected with a limiting rod, and the outer surface of the second reinforcing ring is provided with a limiting hole.

[0011] In order to strengthen the sealing performance of the clamp and the reinforcing ring, as a kind of ductile cast iron pipe with good sealing performance, the outer surfaces of the first reinforcing ring and the second reinforcing ring are sleeved with a sealing sleeve.

[0012] In order to achieve the effect of strengthening the sealing effect, as a kind of ductile cast iron pipe with good sealing performance, the sealing sleeve, the sealing gasket, the first air bag and the second air bag are made of rubber material.

[0013] In order to achieve the effect of connecting the pipe, as a kind of ductile cast iron pipe with good sealing performance, the outer surface of the first reinforcing ring and the second reinforcing ring is sleeved with a first clamp, the bottom of the outer surface of the first clamp is fixedly connected with a connecting block, the inner side of the connecting block is rotatably connected with a connecting rod, and the two ends of the connecting rod are fixedly connected with a second clamp.

[0014] In order to achieve the effect of fixing the pipe, as a kind of ductile cast iron pipe with good sealing performance, the top of the outer surface of the first clamp is fixedly connected with a fixing block, the inner side of the fixing block is rotatably connected with a screw rod, the outer surface of the screw rod is threadedly connected with a sleeve, and the top of the outer surface of the second clamp is fixedly connected with a limiting block.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the utility model, through the setting of convex ring, groove, sealing gasket, first air bag, connecting pipe and second air bag, the convex ring is inserted in the inside of the groove, the sealing performance of the inside connecting part is strengthened, at the same time, the port of the first pipe and the port of the second pipe gradually approach, the first air bag is extruded, the gas in the first air bag is transported to the inside of the second air bag through the connecting pipe, the inside of the groove is filled, the sealing performance of the connecting part of the convex ring and the inside of the groove is further strengthened, the sealing gasket is contacted with the first air bag, the hard connection of the first pipe and the second pipe is avoided, and the sealing performance of the connecting part of the two ports is strengthened, multiple sealing structures make the sealing effect of the ductile cast iron pipe good, and the phenomenon of air leakage and liquid leakage is avoided.

[0017] 2. The utility model discloses a first reinforcing ring, second reinforcing ring, spacing rod, limiting hole, first clamping hoop and second clamping hoop are set up, and the use intensity of the first pipe fitting and second pipe fitting end connection is strengthened by the first reinforcing ring and second reinforcing ring, the wear resistance of the connecting place is effectively improved, the spacing rod is inserted in the inside of the limiting hole, so that the first pipe fitting and second pipe fitting are not easy to rotate relatively after being connected, and the use stability is improved, the first clamping hoop and second clamping hoop are wrapped and positioned to the first pipe fitting and second pipe fitting connecting place, guarantee the compactness and firmness of connection, improve the convenience of operation, and the installation is rapid and convenient, satisfies the demand of installation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view structural schematic drawing of the utility model embodiment;

[0019] Figure 2 It is the cross section plane structural schematic drawing of the utility model embodiment;

[0020] Figure 3 It is the first pipe fitting structural schematic drawing of the utility model embodiment;

[0021] Figure 4 It is the second pipe fitting structural schematic drawing of the utility model embodiment;

[0022] Figure 5 It is the clamping hoop structural schematic drawing of the utility model embodiment;

[0023] Figure 6 It is the pipe fitting inner wall structural schematic drawing of the utility model embodiment.

[0024] In the drawing: 1, first pipe fitting;2, second pipe fitting;3, convex ring;4, recess;5, sealing pad;6, first air bag;7, connecting pipe;8, second air bag;9, anticorrosive coating;10, inner layer;11, nodular cast iron layer;12, chrome plating layer;13, first reinforcing ring;14, second reinforcing ring;15, spacing rod;16, limiting hole;17, sealing sleeve;18, first clamping hoop;19, connecting block;20, connecting rod;21, second clamping hoop;22, fixed block;23, screw;24, screw sleeve;25, spacing block. DETAILED DESCRIPTION

[0025] The technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model. EMBODIMENT

[0026] As Figures 1-6 shown, a spheroidal graphite cast iron pipe fitting with good sealing performance, comprising a first pipe fitting 1 and a second pipe fitting 2, one end of the first pipe fitting 1 is fixedly connected with a convex ring 3, the inner side of the second pipe fitting 2 is provided with a groove 4 near one side of the convex ring 3; one end of the first pipe fitting 1 is fixedly connected with a sealing gasket 5 near one side of the convex ring 3, one end of the second pipe fitting 2 is fixedly connected with a first air bag 6 near one side of the sealing gasket 5, the outer surface of the first air bag 6 is fixedly connected with a connecting pipe 7, one end of the connecting pipe 7 is fixedly connected with a second air bag 8, the inner side and the outer surface of the first pipe fitting 1 and the second pipe fitting 2 are fixedly connected with a corrosion-resistant coating 9.

[0027] In specific use, the first pipe fitting 1 and the second pipe fitting 2 are connected through the convex ring 3, the groove 4, the sealing gasket 5, the first air bag 6, the connecting pipe 7 and the second air bag 8, the convex ring 3 is inserted into the groove 4, so that multiple spheroidal graphite cast iron pipe fittings can be connected, and the sealing performance of the inner side connection is strengthened; when connected, the ports of the first pipe fitting 1 and the second pipe fitting 2 gradually approach each other, the first air bag 6 is extruded, the gas in the first air bag 6 is transported to the inside of the second air bag 8 through the connecting pipe 7, the originally gas-free second air bag 8 is gradually filled, the inner side of the groove 4 is filled, and the sealing performance of the connection between the convex ring 3 and the inner side of the groove 4 is further strengthened; the sealing gasket 5 is in contact with the first air bag 6, so that the first pipe fitting 1 and the second pipe fitting 2 are connected without hard connection, and the sealing performance of the connection between the ports of the two is strengthened; the multiple sealing structures make the spheroidal graphite cast iron pipe fitting have good sealing effect and avoid the phenomenon of gas leakage and liquid leakage; the corrosion-resistant coating 9 is arranged on the inner and outer surfaces of the pipe fitting to enhance the corrosion resistance and further protect the sealing performance.

[0028] In this embodiment, the first pipe fitting 1 and the second pipe fitting 2 are composed of an inner layer 10, a spheroidal graphite cast iron layer 11 and a chromium plating layer 12.

[0029] In specific use, the inner layer 10, the spheroidal graphite cast iron layer 11 and the chromium plating layer 12 can increase the smoothness, corrosion resistance and wear resistance of the surface of the spheroidal graphite cast iron pipe fitting.

[0030] In this embodiment, one side of the outer surface of the first pipe fitting 1 is fixedly connected with a first reinforcing ring 13, and one side of the outer surface of the second pipe fitting 2 is fixedly connected with a second reinforcing ring 14.

[0031] In specific use, the first reinforcing ring 13 and the second reinforcing ring 14 are respectively fixed at the connection between the outer surfaces of the first pipe fitting 1 and the second pipe fitting 2, so that the use strength of the end connection of the first pipe fitting 1 and the second pipe fitting 2 is strengthened, and the wear resistance of the connection is effectively improved.

[0032] In the embodiment, the outer surface of the first reinforcing ring 13 is fixedly connected with the limiting rod 15, and the outer surface of the second reinforcing ring 14 is provided with the limiting hole 16.

[0033] In specific use, the limiting rod 15 is inserted into the limiting hole 16, so that the first pipe 1 and the second pipe 2 are not easy to rotate relative to each other after being connected, and the stability is improved.

[0034] In the embodiment, the outer surfaces of the first reinforcing ring 13 and the second reinforcing ring 14 are sleeved with the sealing sleeve 17.

[0035] In specific use, the sealing sleeve 17 is sleeved on the outer surfaces of the first reinforcing ring 13 and the second reinforcing ring 14 after the first pipe 1 and the second pipe 2 are connected, so as to further improve the tightness of the connection between the first reinforcing ring 13 and the second reinforcing ring 14 and the inner side surfaces of the first clamp 18 and the second clamp 21.

[0036] In the embodiment, the sealing sleeve 17, the sealing gasket 5, the first air bag 6 and the second air bag 8 are made of rubber material.

[0037] In specific use, the sealing sleeve 17, the sealing gasket 5, the first air bag 6 and the second air bag 8 are made of rubber material, so as to effectively improve the sealing effect of the pipe.

[0038] In the embodiment, the outer surface of the first reinforcing ring 13 and the second reinforcing ring 14 is sleeved with the first clamp 18 on one side, the bottom of the outer surface of the first clamp 18 is fixedly connected with the connecting block 19, the inner side of the connecting block 19 is rotatably connected with the connecting rod 20, and the two ends of the connecting rod 20 are fixedly connected with the second clamp 21.

[0039] In specific use, the first clamp 18 and the second clamp 21 can be opened and closed through the connecting block 19 and the connecting rod 20, and the first pipe 1 and the second pipe 2 can be wrapped and limited at the connection position to connect multiple ductile iron pipes into one whole.

[0040] In the embodiment, the top of the outer surface of the first clamp 18 is fixedly connected with the fixed block 22, the inner side of the fixed block 22 is rotatably connected with the screw rod 23, the outer surface of the screw rod 23 is threadedly connected with the screw sleeve 24, and the top of the outer surface of the second clamp 21 is fixedly connected with the limiting block 25.

[0041] Specific use, through the setting of screw rod 23 and screw sleeve 24, when the first clamp 18 and the second clamp 21 are closed, the screw rod 23 is rotated to the two groups of limiting blocks 25, and it is locked through the screw sleeve 24, so that the first pipe 1 and the second pipe 2 can be connected and fixed, the tightness and firmness of the connection are guaranteed, the convenience of operation is improved, the installation is rapid and convenient, and the installation requirements are met.

[0042] Working principle: in use, the first pipe 1 is connected with the second pipe 2, the convex ring 3 is inserted into the groove 4, the sealing property of the inner side surface connection is strengthened, meanwhile, the port of the first pipe 1 extrudes the first air bag 6, the gas in the first air bag 6 is transported to the inside of the second air bag 8 through the connecting pipe 7, the inside of the groove 4 is filled, the sealing property of the convex ring 3 and the inside surface connection of the groove 4 is further strengthened, the sealing gasket 5 contacts with the first air bag 6, the sealing property of the port connection of the two is strengthened, the anticorrosive coating 9 is arranged on the inner and outer surfaces of the pipe to enhance the corrosion resistance, the first reinforcing ring 13 and the second reinforcing ring 14 strengthen the use strength of the end connection of the first pipe 1 and the second pipe 2, the limiting rod 15 is inserted into the limiting hole 16, so that the first pipe 1 and the second pipe 2 are not easy to rotate relatively after being connected, the sealing sleeve 17 is arranged on the outer surfaces of the first reinforcing ring 13 and the second reinforcing ring 14 after the first pipe 1 and the second pipe 2 are connected, the tightness of the inside surface connection of the two and the first clamp 18 and the second clamp 21 is strengthened, the first clamp 18 and the second clamp 21 wrap and limit the connection of the first pipe 1 and the second pipe 2, the screw rod 23 is rotated to the two groups of limiting blocks 25, and it is locked through the screw sleeve 24, so that the first pipe 1 and the second pipe 2 are connected and fixed, the tightness and firmness of the connection are guaranteed.

[0043] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A ductile cast iron pipe fitting with good sealing properties, comprising a first pipe fitting (1) and a second pipe fitting (2), characterized in that: One end of the first pipe (1) is fixedly connected with a convex ring (3), the inner side of the second pipe (2) is provided with a groove (4) near the side of the convex ring (3); one end of the first pipe (1) is fixedly connected with a sealing gasket (5) near the side of the convex ring (3), one end of the second pipe (2) is fixedly connected with a first air bag (6) near the side of the sealing gasket (5), the outer surface of the first air bag (6) is fixedly connected with a connecting pipe (7), one end of the connecting pipe (7) is fixedly connected with a second air bag (8), the inner side and the outer surface of the first pipe (1) and the second pipe (2) are fixedly connected with a corrosion-resistant coating (9).

2. The ductile cast iron pipe fitting according to claim 1, wherein: The first pipe (1) and the second pipe (2) are composed of an inner layer (10), a nodular cast iron layer (11) and a chrome plating layer (12).

3. The ductile iron pipe fitting of claim 1, wherein: The outer surface of the first pipe (1) is fixedly connected with a first reinforcing ring (13), and the outer surface of the second pipe (2) is fixedly connected with a second reinforcing ring (14).

4. The ductile cast iron pipe fitting according to claim 3, wherein: The outer surface of the first reinforcing ring (13) is fixedly connected with a limiting rod (15), and the outer surface of the second reinforcing ring (14) is provided with a limiting hole (16).

5. The ductile iron pipe fitting of claim 3, wherein: The outer surfaces of the first reinforcing ring (13) and the second reinforcing ring (14) are both sleeved with a sealing sleeve (17).

6. The ductile iron pipe fitting of claim 5, wherein: The sealing sleeve (17), the sealing gasket (5), the first air bag (6) and the second air bag (8) are all made of rubber material.

7. The ductile iron pipe fitting of claim 3, wherein: One side of the outer surfaces of the first reinforcing ring (13) and the second reinforcing ring (14) is sleeved with a first clamp (18), the bottom of the outer surface of the first clamp (18) is fixedly connected with a connecting block (19), the inner part of the connecting block (19) is rotatably connected with a connecting rod (20), and both ends of the connecting rod (20) are fixedly connected with a second clamp (21).

8. The ductile iron pipe fitting of claim 7, wherein: The top of the outer surface of the first clamp (18) is fixedly connected with a fixed block (22), the inner side of the fixed block (22) is rotatably connected with a screw rod (23), the outer surface of the screw rod (23) is threadedly connected with a screw sleeve (24), and the top of the outer surface of the second clamp (21) is fixedly connected with a limiting block (25).

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