Spheroidal graphite pipe fitting with high sealing performance

Abstract

The utility model discloses a spheroidal graphite pipe fitting with high sealing performance, which comprises a middle pipe body assembly, a left pipe body assembly, a right pipe body assembly, a sealing element assembly and a fastening assembly, and the left pipe body assembly and the right pipe body assembly are respectively arranged on two sides of the middle pipe body assembly; one end of the left pipe body assembly and one end of the right pipe body assembly are respectively inserted into the middle pipe body assembly; sealing element assemblies are respectively arranged at the joint of the surface of one end, inserted into the middle pipe body assembly, of the left pipe body assembly and the inner wall of the middle pipe body assembly and the joint of the surface of one end, inserted into the middle pipe body assembly, of the right pipe body assembly and the inner wall of the middle pipe body assembly; the middle pipe body assembly, the left pipe body assembly and the right pipe body assembly are connected through fastening assemblies. Therefore, the sealing element assembly of the device achieves comprehensive and efficient sealing of the connecting position by integrating multiple sets of sealing elements, the fastening assembly ensures that stress is evenly distributed in the fixing process, then the sealing elements are evenly pressed, and the stability and reliability of the overall sealing performance are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron pipe fittings, in particular to a ductile iron pipe fitting with high sealing performance. Background Art

[0002] In the existing pipeline system, ductile iron pipe fittings are widely used in water supply, drainage, petroleum, chemical industry and other fields due to their excellent mechanical properties and corrosion resistance.

[0003] However, in terms of pipe connections, traditional connection methods such as flanges, gaskets and fixing bolts, although they achieve sealing to a certain extent, still have some significant shortcomings.

[0004] Firstly, the sealing components of this sealing method are relatively simple and usually only rely on the sealing gasket to achieve the sealing effect, and the sealing effect is limited. Secondly, although the bolt fixing method can provide a certain connection strength, it is difficult to evenly distribute the tightening force of the bolts on the sealing gasket, which can easily lead to uneven force on the sealing gasket. This uneven force will not only reduce the sealing effect, but may also cause local damage or failure of the sealing gasket during long-term use, further exacerbating the risk of leakage. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the purpose of the utility model is to propose a high-sealing ductile iron pipe fitting. The sealing component of the device realizes comprehensive and efficient sealing of the connection by integrating multiple sets of sealing components. The fastening component ensures uniform force distribution during the fixing process, thereby making the seal evenly compressed, which significantly improves the stability and reliability of the overall sealing performance.

[0007] To achieve the above-mentioned purpose, the utility model proposes a high-sealing ductile iron pipe fitting, comprising a middle pipe body assembly, a left pipe body assembly, a right pipe body assembly, a sealing assembly and a fastening assembly, wherein the left pipe body assembly has the same structure as the right pipe body assembly, and the left pipe body assembly and the right pipe body assembly are respectively arranged on both sides of the middle pipe body assembly; one end of the left pipe body assembly and one end of the right pipe body assembly are respectively inserted into the middle pipe body assembly and are connected, and the sealing assembly is respectively arranged at the connection between the end surface of the left pipe body assembly inserted into the middle pipe body assembly and the inner wall of the middle pipe body assembly and the end surface of the right pipe body assembly inserted into the middle pipe body assembly and the inner wall of the middle pipe body assembly; the middle pipe body assembly, the left pipe body assembly and the right pipe body assembly are connected by the fastening assembly.

[0008] The utility model discloses a ductile iron pipe fitting with high sealing performance. The sealing component of the device realizes comprehensive and efficient sealing of the joints by integrating multiple sets of sealing components. The fastening component ensures uniform force distribution during the fixing process, thereby making the sealing components evenly compressed, which significantly improves the stability and reliability of the overall sealing performance.

[0009] In addition, the high-sealability ductile iron pipe fitting proposed in the application may also have the following additional technical features:

[0010] 8. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein the first and second annular plates are connected along the longitudinal direction of the wheel hub, the second and second annular plates are connected along the longitudinal direction of the wheel hub, the second and second annular plates are connected along the longitudinal direction of the wheel hub, the second and second annular plates are connected along the longitudinal direction of the wheel hub, the second and second annular plates are connected along the longitudinal direction of the wheel hub. An O-ring, a second O-ring and a third O-ring, wherein the bowl-shaped sealing ring and the first O-ring are respectively arranged on the surface of the inner connecting pipe, the second O-ring is arranged on the surface of the annular abutment seat, and the third O-ring is arranged on the surface of the second annular disk; the fastening assembly comprises a first flange, a connecting shaft, an elastic clamp, a second flange and a connecting cartridge, wherein the first flange is fixedly connected at the center of the surface of the connecting middle tube, the connecting shaft is evenly fixedly connected to the inner wall of the first flange, the elastic clamps are symmetrically arranged on the surface of the connecting shaft, the second flange is fixedly connected to the surface of the annular abutment seat, the connecting cartridge is evenly fixedly connected to the inner wall of the second flange and corresponds to the position of the connecting shaft, one end of the connecting shaft passes through the interior of the connecting cartridge and is clamped and fixed to the inner wall of the connecting cartridge by the elastic clamp.

[0011] Specifically, it also includes a pneumatic sealing assembly, which includes a sliding seat, a fourth O-ring, a one-way air injection valve and a pressure gauge connecting seat, wherein the sliding seat is slidably connected to the outer surface of the inner connecting tube and the inner wall of the annular abutment seat respectively, the fourth O-ring is arranged on the sliding seat near one end surface of the first annular disk, the space between the sliding seat and the inner wall of the annular abutment seat forms an air pressure chamber, the one-way air injection valve and the pressure gauge connecting seat are respectively arranged on the top of the annular abutment seat, and are communicated with the inside of the air pressure chamber.

[0012] Specifically, it also includes a sealant, and the sealant is coated on the connection between the first annular disk and the second annular disk.

[0013] Specifically, it also includes an annular elastic sleeve, which is respectively sleeved on the outer sides of the first annular disk and the second annular disk.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of a high-sealing ductile iron pipe fitting of the utility model;

[0017] Figure 2 This is a schematic structural diagram of a middle tube body component in a high-sealability ductile iron pipe fitting of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a left tube body component in a high-sealability ductile iron pipe fitting of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the sealant structure in a high-sealing ductile iron pipe fitting.

[0020] As shown in the figure:

[0021] 1. Middle tube assembly; 2. Left tube assembly; 3. Right tube assembly; 4. Sealing assembly; 10. Fastening assembly;

[0022] 11. connecting middle pipe; 12. connecting channel; 13. step portion; 14. first annular disk;

[0023] 21. inner connecting pipe; 22. annular platform; 23. annular abutment seat; 24. second annular disk;

[0024] 41. bowl-shaped sealing ring; 42. first O-ring; 43. second O-ring; 44. third O-ring; 15. first flange; 16. connecting shaft; 17. elastic clamp; 25. second flange; 26. connecting cartridge;

[0025] 5. Air pressure sealing assembly; 51. Sliding seat; 52. Fourth O-ring; 53. One-way air injection valve; 54. Pressure gauge connection seat;

[0026] 6. Sealant; 7. Annular elastic sleeve;

[0027] 20. Half-ring clamping portion. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0029] A high-sealing ductile iron pipe fitting according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0030] like Figure 1-Figure 4 As shown, a high-sealability ductile iron pipe fitting of an embodiment of the utility model comprises a middle tube body component 1, a left tube body component 2, a right tube body component 3, a sealing component 4 and a fastening component 10, wherein the left tube body component 2 has the same structure as the right tube body component 3, and the left tube body component 2 and the right tube body component 3 are respectively arranged on both sides of the middle tube body component 1; one end of the left tube body component 2 and one end of the right tube body component 3 are respectively inserted into the middle tube body component 1 and are connected, and the sealing component 4 is respectively arranged at the connection between the end surface of the left tube body component 2 inserted into the middle tube body component 1 and the inner wall of the middle tube body component 1 and the end surface of the right tube body component 3 inserted into the middle tube body component 1 and the inner wall of the middle tube body component 1; the middle tube body component 1, the left tube body component 2 and the right tube body component 3 are connected by the fastening component 10.

[0031] Specifically, one end of the left tube body assembly 2 and one end of the right tube body assembly 3 are respectively inserted into the interior of the middle tube body assembly 1. The sealing assembly 4 of the device integrates multiple sets of seals to achieve comprehensive and efficient sealing of the connection. The fastening assembly 10 ensures uniform force distribution during the fixing process, thereby making the seal evenly compressed, which significantly improves the stability and reliability of the overall sealing performance.

[0032] In one embodiment of the present invention, Figure 1-Figure 3 As shown, the middle tube body assembly 1 includes a connecting middle tube 11, a connecting channel 12, a step portion 13 and a first annular disk 14, wherein the first annular disk 14 is symmetrically arranged on the outer surfaces of both ends of the connecting middle tube 11, the step portion 13 is opened on the surface of the first annular disk 14, and the connecting channel 12 is opened on the inner wall of the step portion 13; the left tube body assembly 2 includes an inner connecting tube 21, an annular platform 22, an annular abutment seat 23 and a second annular disk 24, wherein one end of the inner connecting tube 21 is slidably connected to the inner wall of the connecting channel 12 and is connected to the inside of the connecting channel 12, the annular platform 22 is fixedly connected to the surface of the inner connecting tube 21 and is in contact with the inner wall of the step portion 13, the annular abutment seat 23 is fixedly connected to the surface of the inner connecting tube 21 and is located on the outer side of the annular platform 22, the second annular disk 24 is arranged on an end surface of the annular abutment seat 23 close to the first annular disk 14, and the annular abutment seat 23 and the second annular disk 24 are respectively in contact with the surface of the first annular disk 14; the sealing component assembly 4 includes a bowl-shaped sealing ring 41, a first O-ring 42, second O-ring 43 and third O-ring 44, wherein the bowl-shaped sealing ring 41 and the first O-ring 42 are respectively arranged on the surface of the inner connecting pipe 21, the second O-ring 43 is arranged on the surface of the annular abutment seat 23, and the third O-ring 44 is arranged on the surface of the second annular disk 24; the fastening assembly 10 includes a first flange 15, a connecting shaft 16, an elastic clamp 17, a second flange 25 and a connecting cartridge 26, wherein the first flange 15 is fixedly connected to the center of the surface of the connecting middle pipe 11, the connecting shaft 16 is evenly fixedly connected to the inner wall of the first flange 15, the elastic clamps 17 are symmetrically arranged on the surface of the connecting shaft 16, the second flange 25 is fixedly connected to the surface of the annular abutment seat 23, the connecting cartridge 26 is evenly fixedly connected to the inner wall of the second flange 25, and corresponds to the position of the connecting shaft 16, one end of the connecting shaft 16 penetrates into the interior of the connecting cartridge 26, and is clamped and fixed to the inner wall of the connecting cartridge 26 by the elastic clamp 17.

[0033] It should be noted that a semi-ring clamping portion 20 is provided at one end of the inner connecting tube 21 described in this embodiment. The semi-ring clamping portion 20 is provided to improve the stability when the inner connecting tube 21 in the left tube body assembly 2 is connected to the inner connecting tube 21 in the right tube body assembly 3, and the use effect is good.

[0034] Specifically, one end of the inner connecting pipe 21 is inserted into the connecting channel 12 until the annular platform 22 abuts against the inner wall of the step portion 13. When the annular platform 22 abuts against the inner wall of the step portion 13, the annular abutting seat 23 and the second annular disk 24 synchronously abut against the inner wall of the first annular disk 14. Among them, the bowl-shaped sealing ring 41 and the first O-ring 42 improve the sealing performance at the connection between the surface of the inner connecting pipe 21 and the inner wall of the connecting channel 12, the second O-ring 43 improves the sealing performance at the connection between the surface of the annular platform 22 and the inner wall of the step portion 13, and the third O-ring 44 improves the sealing performance at the connection between the surface of the second annular disk 24 and the surface of the first annular disk 14. The layers are arranged in layers and the sealing effect is good. When connecting, the connecting shaft 16 is inserted into the connecting cartridge 26 until the elastic clamp 17 is clamped and fixed to the inner wall of the connecting cartridge 26. The clamping groove on the surface of the connecting cartridge 26 and the position of the elastic clamp 17 are fixed, which can ensure that the extrusion force is uniform and stable, and the use effect is good.

[0035] In one embodiment of the present invention, Figure 3 As shown, it also includes a pneumatic sealing component 5, which includes a sliding seat 51, a fourth O-ring 52, a one-way air injection valve 53 and a pressure gauge connecting seat 54, wherein the sliding seat 51 is slidably connected to the outer surface of the inner connecting tube 21 and the inner wall of the annular abutment seat 23, respectively, the fourth O-ring 52 is arranged on the end surface of the sliding seat 51 close to the first annular disk 14, the space between the sliding seat 51 and the inner wall of the annular abutment seat 23 forms an air pressure cavity, the one-way air injection valve 53 and the pressure gauge connecting seat 54 are respectively arranged on the top of the annular abutment seat 23, and are connected to the inside of the air pressure cavity.

[0036] Specifically, the pressure gauge is connected to the pressure gauge connecting seat 54, and then high-pressure gas is injected into the air pressure chamber through the one-way air injection valve 53. The index of the pressure gauge is observed in real time. When the high-pressure gas in the air pressure chamber increases, the high-pressure gas will push the slide 51 to move toward the side of the first annular disk 14 until it abuts against the surface of the first annular disk 14. The fourth O-ring 52 arranged on the surface of the slide 51 can seal the connection well, and the use effect is good.

[0037] In one embodiment of the present invention, Figure 4 As shown, a sealant 6 is also included, and the sealant 6 is coated on the connection between the first annular disk 14 and the second annular disk 24 .

[0038] Specifically, the sealant 6 is provided to further improve the sealing performance of the connection between the first annular disk 14 and the second annular disk 24, and the use effect is good.

[0039] In one embodiment of the present invention, Figure 4 As shown, it also includes an annular elastic sheath 7, which is respectively sleeved on the outside of the first annular disk 14 and the second annular disk 24.

[0040] Specifically, the annular elastic sleeve 7 is provided to further improve the sealing performance of the connection between the first annular disk 14 and the second annular disk 24 , while also reducing the influence of sunlight and cold wind on the sealant 6 , thereby effectively increasing the service life of the sealant 6 .

[0041] To sum up, the high-sealing ductile iron pipe fitting of the embodiment of the utility model, the sealing component 4 of the device realizes comprehensive and efficient sealing of the connection by integrating multiple groups of seals, and the fastening component 10 ensures uniform force distribution during the fixing process, thereby making the seal evenly compressed, which significantly improves the stability and reliability of the overall sealing performance.

[0042] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A high-sealing ductile iron pipe, characterized in that: It comprises a middle tube body assembly (1), a left tube body assembly (2), a right tube body assembly (3), a sealing assembly (4) and a fastening assembly (10), wherein: The left tube body assembly (2) and the right tube body assembly (3) have the same structure, and the left tube body assembly (2) and the right tube body assembly (3) are respectively arranged on both sides of the middle tube body assembly (1); One end of the left tube assembly (2) and one end of the right tube assembly (3) are respectively inserted into the interior of the middle tube assembly (1) and are in communication with each other; the sealing component (4) is respectively provided at the connection point between the surface of one end of the left tube assembly (2) inserted into the interior of the middle tube assembly (1) and the inner wall of the middle tube assembly (1) and at the connection point between the surface of one end of the right tube assembly (3) inserted into the interior of the middle tube assembly (1) and the inner wall of the middle tube assembly (1); The middle tube body assembly (1), the left tube body assembly (2) and the right tube body assembly (3) are connected via the fastening assembly (10).

2. The high-sealability ductile iron pipe fitting according to claim 1, characterized in that: The middle tube body assembly (1) comprises a connecting middle tube (11), a connecting channel (12), a step portion (13) and a first annular disk (14), wherein the first annular disk (14) is symmetrically arranged on the outer surfaces of both ends of the connecting middle tube (11), the step portion (13) is opened on the surface of the first annular disk (14), and the connecting channel (12) is opened on the inner wall of the step portion (13); The left tube body assembly (2) comprises an inner connecting tube (21), an annular platform (22), an annular abutment seat (23) and a second annular disk (24), wherein one end of the inner connecting tube (21) is slidably connected to the inner wall of the connecting channel (12) and communicates with the interior of the connecting channel (12); the annular platform (22) is fixedly connected to the surface of the inner connecting tube (21) and is abutted against the inner wall of the step portion (13); the annular abutment seat (23) is fixedly connected to the surface of the inner connecting tube (21) and is located outside the annular platform (22); the second annular disk (24) is arranged on one end surface of the annular abutment seat (23) close to the first annular disk (14); the annular abutment seat (23) and the second annular disk (24) are respectively abutted against the surface of the first annular disk (14); The sealing component assembly (4) comprises a bowl-shaped sealing ring (41), a first O-shaped sealing ring (42), a second O-shaped sealing ring (43) and a third O-shaped sealing ring (44), wherein the bowl-shaped sealing ring (41) and the first O-shaped sealing ring (42) are respectively arranged on the surface of the inner connecting pipe (21), the second O-shaped sealing ring (43) is arranged on the surface of the annular abutting seat (23), and the third O-shaped sealing ring (44) is arranged on the surface of the second annular disk (24); The fastening assembly (10) comprises a first flange (15), a connecting shaft (16), an elastic clamp (17), a second flange (25) and a connecting cartridge (26), wherein the first flange (15) is fixedly connected at the center of the surface of the connecting middle tube (11), the connecting shaft (16) is evenly fixedly connected to the inner wall of the first flange (15), the elastic clamp (17) is symmetrically arranged on the surface of the connecting shaft (16), the second flange (25) is fixedly connected to the surface of the annular abutment seat (23), the connecting cartridge (26) is evenly fixedly connected to the inner wall of the second flange (25) and corresponds to the position of the connecting shaft (16), one end of the connecting shaft (16) passes through the interior of the connecting cartridge (26) and is clamped and fixed to the inner wall of the connecting cartridge (26) through the elastic clamp (17).

3. The high-sealing ductile iron pipe fitting according to claim 2, characterized in that: It also includes a pneumatic sealing component (5), which includes a sliding seat (51), a fourth O-ring (52), a one-way air injection valve (53) and a pressure gauge connecting seat (54), wherein the sliding seat (51) is slidably connected to the outer surface of the inner connecting tube (21) and the inner wall of the annular abutting seat (23), respectively, the fourth O-ring (52) is arranged on the surface of one end of the sliding seat (51) close to the first annular disk (14), the space between the sliding seat (51) and the inner wall of the annular abutting seat (23) forms an air pressure chamber, and the one-way air injection valve (53) and the pressure gauge connecting seat (54) are respectively arranged on the top of the annular abutting seat (23) and are connected to the inside of the air pressure chamber.

4. The high-sealing ductile iron pipe fitting according to claim 2, characterized in that: It also includes a sealant (6), wherein the sealant (6) is coated on the connection between the first annular disk (14) and the second annular disk (24).

5. The high-sealability ductile iron pipe fitting according to claim 2, characterized in that: It also comprises an annular elastic sheath (7), wherein the annular elastic sheath (7) is respectively sleeved on the outside of the first annular disk (14) and the second annular disk (24).

Images